TECHNICAL FIELD
[0001] The present invention relates to a holding method, a yarn supply device, and a yarn
supply stand.
BACKGROUND
[0002] There is known a false-twist texturing device including a yarn supply stand which
rotatably supports a plurality of yarn supply packages and a false-twist texturing
device which falsely twists yarns supplied from the yarn supply packages. For example,
Patent Literature 1 (
Japanese Unexamined Patent Publication No. 2021-24744) discloses a yarn supply stand provided with a pair of mounting portions (pegs) respectively
supporting a plurality of yarn supply packages. In such a yarn supply stand, since
a yarn splicing process (tail connecting process) of connecting a yarn end (foremost
yarn) of a yarn of a yarn supply package (hereinafter, referred to as a first yarn
supply package) supported by one of the pair of mounting portion and a yarn end (rearmost
yarn) of a yarn of a yarn supply package (hereinafter, referred to as a second yarn
supply package) supported by the other of the pair of mounting portions is performed,
the yarn can be supplied from the second yarn supply package provided as a spare to
the false-twist texturing device even when the yarn of the first yarn supply package
runs out. That is, the yarn supply stand of Patent Literature 1 can continuously supply
the yarn to the false-twist texturing device by automatically switching the yarn supply
package to be supplied to the false-twist texturing device.
[0003] In the yarn splicing process, yarns are respectively pulled out from the first yarn
supply package and the second yarn supply package and these yarns are connected using
the yarn splicing device. At the time when this connection is completed, the yarn
connected between the first yarn supply package and the second yarn supply package
(hereinafter, the yarn between both yarn supply packages) is in a slack state. When
the yarn is unwound from one yarn supply package while the yarn between both yarn
supply packages is in a slack state, the slack yarn may get entangled in the unwound
yarn and may cause problems such as yarn breakage. Further, when the yarn supply package
to be supplied to the false-twist texturing device while the yarn between both yarn
supply packages is in a slack state is switched, a local load is applied to the yarn
between both yarn supply packages or the yarn between both yarn supply packages contacts
the peripheral parts. As a result, problems such as yarn damage and yarn breakage
may occur.
[0004] In the yarn supply stand, one holding portion (clip) for avoiding the above-described
problems when unwinding or switching the yarn supply package (see
Japanese Unexamined Patent Publication No. H9-67064) is provided at a lower portion between the first yarn supply package and the second
yarn supply package and a worker removes the slack of the yarn between both yarn supply
packages and holds the yarn between both yarn supply packages by the holding portion.
SUMMARY
[0005] However, the holding state of the yarn between both yarn supply packages by the holding
portion changes depending on the situation when the yarn is unwound from the yarn
supply package, such as the unwound state of the yarn from any one of the first yarn
supply package and the second yarn supply package and the winding direction (clockwise
or counterclockwise winding) of the yarn unwound from the first yarn supply package
or the second yarn supply package on the yarn supply bobbin. Therefore, when the yarn
is held only by one holding portion between the first yarn supply package and the
second yarn supply package, for example, a difference in height between the yarn pull-out
position of the yarn supply package and the arrangement position of the holding portion
may increase depending on the state of the yarn between the yarn supply packages.
As a result, unnecessary resistance may occur in the yarn between the yarn supply
packages. Then, if such unnecessary resistance occurs, problems such as cutting of
the yarn or damage of the yarn occur when switching the yarn supply package to be
unwound.
[0006] Here, an object of the present invention is to provide a holding method, a yarn supply
device and a yarn supply stand capable of suppressing problems from occurring when
unwinding or switching yarn supply packages and a yarn supply device including the
same.
[0007] A holding method according to one aspect of the present invention holds connected
yarn between a first yarn supply package and a second yarn supply package by a first
holding portion or a second holding portion in a yarn supply stand, the yarn supply
stand comprising a first mounting portion on which the first yarn supply package obtained
by winding a yarn on a bobbin is mounted, a second mounting portion on which the second
yarn supply package obtained by winding a yarn on a bobbin is mounted, a guide portion
which guides the yarn unwound from an outer layer side of the first yarn supply package
while a yarn end on an outer layer side of the second yarn supply package is connected
to a yarn end on an inner layer side of the first yarn supply package or the yarn
unwound from the outer layer side of the second yarn supply package while a yarn end
on the outer layer side of the first yarn supply package is connected to a yarn end
on an inner layer side of the second yarn supply package to a yarn processing device,
the first holding portion which holds a part of the yarn between both yarn supply
packages while the yarn end on the inner layer side of the first yarn supply package
is connected to the yarn end on the outer layer side of the second yarn supply package,
and the second holding portion which holds a part of the yarn between both yarn supply
packages while the yarn end on the inner layer side of the second yarn supply package
is connected to the yarn end on the outer layer side of the first yarn supply package,
wherein when a line passing through the first mounting portion and the second mounting
portion is virtually set as a mounting portion line in a front view in which the guide
portion is located between the first mounting portion and the second mounting portion
and the yarn processing device is located behind the guide portion, one of the first
holding portion and the second holding portion is disposed in an area on one side
divided by the mounting portion line as a boundary in the front view and another of
the first holding portion and the second holding portion is disposed in an area on
another side divided by the mounting portion line as a boundary, wherein when a line
passing through the first holding portion and the second holding portion is virtually
set as a holding portion line in the front view, one of the first mounting portion
and the second mounting portion is disposed in an area on one side divided by the
holding portion line as a boundary in the front view and another of the first mounting
portion and the second mounting portion is disposed in an area on another side divided
by the holding portion line as a boundary, and wherein the first mounting portion
is disposed on a left side of the guide portion, the second mounting portion is disposed
on a right side of the guide portion, the first holding portion is disposed on an
upper side of the guide portion, and the second holding portion is disposed on a lower
side of the guide portion in the front view, the holding method comprising: holding
the connected yarn by the first holding portion when the yarn of the first yarn supply
package is wound clockwise, the yarn of the second yarn supply package is wound clockwise,
and the yarn wound on the first yarn supply package is unwound in the front view;
holding the connected yarn by the second holding portion when the yarn of the first
yarn supply package is wound clockwise, the yarn of the second yarn supply package
is wound clockwise, and the yarn wound on the second yarn supply package is unwound
in the front view; holding the connected yarn by the second holding portion when the
yarn of the first yarn supply package is wound counterclockwise, the yarn of the second
yarn supply package is wound counterclockwise, and the yarn wound on the first yarn
supply package is unwound in the front view; and holding the connected yarn by the
first holding portion when the yarn of the first yarn supply package is wound counterclockwise,
the yarn of the second yarn supply package is wound counterclockwise, and the yarn
wound on the second yarn supply package is unwound in the front view.
[0008] In this holding method, in the yarn supply device in which the first holding portion
is disposed above the first mounting portion in the vertical direction and above the
second mounting portion in the vertical direction and the second holding portion is
disposed below the first mounting portion in the vertical direction and below the
second mounting portion in the vertical direction, the yarn between both yarn supply
packages is held by an appropriate holding portion (the first holding portion or the
second holding portion) that prevents a local load from being applied to the yarn
between both yarn supply packages or prevents the yarn between both yarn supply packages
from contacting the peripheral parts according to the yarn winding direction in the
yarn supply package supported by both mounting portions and the attachment position
of the yarn supply package to be unwound. As a result, it is possible to suppress
problems from occurring when unwinding or switching the yarn supply package.
[0009] In this holding method according to one aspect of the present invention, the first
holding portion may include a first holding portion for a first mounting portion disposed
at a position closer to the first mounting portion than the second mounting portion
and a first holding portion for a second mounting portion disposed at a position closer
to the second mounting portion than the first mounting portion, and the second holding
portion may include a second holding portion for a first mounting portion disposed
at a position closer to the first mounting portion than the second mounting portion
and a second holding portion for a second mounting portion disposed at a position
closer to the second mounting portion than the first mounting portion.
[0010] In the holding method of this configuration, it is possible to hold the yarn between
both yarn supply packages in a more appropriate state depending on the yarn pulled
out from the first yarn supply package or the yarn pulled out from the second yarn
supply package. Accordingly, it is possible to more reliably suppress problems from
occurring when unwinding or switching the yarn supply package.
[0011] A yarn supply device according to one aspect of the present invention comprises:
a yarn supply stand; and a yarn splicing processing device, wherein the yarn supply
stand comprises a first mounting portion on which a first yarn supply package obtained
by winding a yarn on a bobbin is mounted, a second mounting portion on which a second
yarn supply package obtained by winding a yarn on a bobbin is mounted, a guide portion
which guides the yarn unwound from an outer layer side of the first yarn supply package
while a yarn end on an outer layer side of the second yarn supply package is connected
to a yarn end on an inner layer side of the first yarn supply package or the yarn
unwound from the outer layer side of the second yarn supply package while a yarn end
on the outer layer side of the first yarn supply package is connected to a yarn end
on an inner layer side of the second yarn supply package to a yarn processing device,
a first holding portion which holds a part of the yarn between both yarn supply packages
while the yarn end on the inner layer side of the first yarn supply package is connected
to the yarn end on the outer layer side of the second yarn supply package, and a second
holding portion which holds a part of the yarn between both yarn supply packages while
the yarn end on the inner layer side of the second yarn supply package is connected
to the yarn end on the outer layer side of the first yarn supply package, wherein
when a line passing through the first mounting portion and the second mounting portion
is virtually set as a mounting portion line in a front view in which the guide portion
is located between the first mounting portion and the second mounting portion and
the yarn processing device is located behind the guide portion, one of the first holding
portion and the second holding portion is disposed in an area on one side divided
by the mounting portion line as a boundary in the front view and another of the first
holding portion and the second holding portion is disposed in an area on another side
divided by the mounting portion line as a boundary, wherein when a line passing through
the first holding portion and the second holding portion is virtually set as a holding
portion line in the front view, one of the first mounting portion and the second mounting
portion is disposed in an area on one side divided by the holding portion line as
a boundary in the front view and another of the first mounting portion and the second
mounting portion is disposed in an area on another side divided by the holding portion
line as a boundary, and wherein when a line passing through the guide portion, the
first holding portion and the second holding portion is virtually set as a guide portion/mounting
portion line in a side view in which the first mounting portion and the second mounting
portion overlap each other, the first holding portion and the second holding portion
are arranged line-symmetrically with respect to the guide portion/mounting portion
line, wherein the yarn splicing processing device comprises a yarn splicing device
which connects the yarn end of the first yarn supply package mounted on the first
mounting portion to the yarn end of the second yarn supply package mounted on the
second mounting portion and holds a part of the connected yarn by the first holding
portion or the second holding portion, and a control unit that controls the yarn splicing
device, wherein the first mounting portion is disposed on a left side of the guide
portion, the second mounting portion is disposed on a right side of the guide portion,
the first holding portion is disposed on an upper side of the guide portion, and the
second holding portion is disposed on a lower side of the guide portion in the front
view, wherein the control unit causes the connected yarn to be held by the first holding
portion when the yarn of the first yarn supply package is wound clockwise, the yarn
of the second yarn supply package is wound clockwise, and the yarn wound on the first
yarn supply package is unwound in the front view, the connected yarn to be held by
the second holding portion when the yarn of the first yarn supply package is wound
clockwise, the yarn of the second yarn supply package is wound clockwise, and the
yarn wound on the second yarn supply package is unwound in the front view, the connected
yarn to be held by the second holding portion when the yarn of the first yarn supply
package is wound counterclockwise, the yarn of the second yarn supply package is wound
counterclockwise, and the yarn wound on the first yarn supply package is unwound in
the front view, and the connected yarn to be held by the first holding portion when
the yarn of the first yarn supply package is wound counterclockwise, the yarn of the
second yarn supply package is wound counterclockwise, and the yarn wound on the second
yarn supply package is unwound in the front view.
[0012] In this configuration, in the yarn supply device in which the first holding portion
is disposed above the first mounting portion in the vertical direction and above the
second mounting portion in the vertical direction and the second holding portion is
disposed below the first mounting portion in the vertical direction and below the
second mounting portion in the vertical direction, the yarn between both yarn supply
packages is held by an appropriate holding portion (the first holding portion or the
second holding portion) that prevents a local load from being applied to the yarn
between both yarn supply packages or prevents the yarn between both yarn supply packages
from contacting the peripheral parts according to the yarn winding direction in the
yarn supply package supported by both mounting portions and the attachment position
of the yarn supply package to be unwound. As a result, it is possible to suppress
problems from occurring when unwinding or switching the yarn supply package. Furthermore,
in this configuration, it is possible to align the holding states of the yarn pulled
out from the first yarn supply package and the yarn pulled out from the second yarn
supply package by the first holding portion and the second holding portion.
[0013] In the yarn supply device according to this aspect of the present invention, the
first holding portion may include a first holding portion for a first mounting portion
disposed at a position closer to the first mounting portion than the second mounting
portion and a first holding portion for a second mounting portion disposed at a position
closer to the second mounting portion than the first mounting portion, and the second
holding portion may include a second holding portion for a first mounting portion
disposed at a position closer to the first mounting portion than the second mounting
portion and a second holding portion for a second mounting portion disposed at a position
closer to the second mounting portion than the first mounting portion, wherein the
control unit causes the connected yarn to be held by both the first holding portion
for the first mounting portion and the first holding portion for the second mounting
portion when the yarn of the first yarn supply package is wound clockwise, the yarn
of the second yarn supply package is wound clockwise, and the yarn wound on the first
yarn supply package is unwound in the front view, the connected yarn to be held by
both the second holding portion for the first mounting portion and the second holding
portion for the second mounting portion when the yarn of the first yarn supply package
is wound clockwise, the yarn of the second yarn supply package is wound clockwise,
and the yarn wound on the second yarn supply package is unwound in the front view,
the connected yarn to be held by both the second holding portion for the first mounting
portion and the second holding portion for the second mounting portion when the yarn
of the first yarn supply package is wound counterclockwise, the yarn of the second
yarn supply package is wound counterclockwise, and the yarn wound on the first yarn
supply package is unwound in the front view, and the connected yarn to be held by
both the first holding portion for the first mounting portion and the first holding
portion for the second mounting portion when the yarn of the first yarn supply package
is wound counterclockwise, the yarn of the second yarn supply package is wound counterclockwise,
and the yarn wound on the second yarn supply package is unwound in the front view.
[0014] In this configuration, it is possible to hold the yarn between both yarn supply packages
in a more appropriate state depending on the yarn pulled out from the first yarn supply
package or the yarn pulled out from the second yarn supply package. Accordingly, it
is possible to more reliably suppress problems from occurring when unwinding or switching
the yarn supply package.
[0015] A yarn supply device according to one aspect of the present invention comprises:
a yarn supply stand; a yarn splicing processing device; and a yarn supply package
rotation device, wherein the yarn supply stand comprises a first mounting portion
on which a first yarn supply package obtained by winding a yarn on a bobbin is mounted,
a second mounting portion on which a second yarn supply package obtained by winding
a yarn on a bobbin is mounted, a guide portion which guides the yarn unwound from
an outer layer side of the first yarn supply package while a yarn end on an outer
layer side of the second yarn supply package is connected to a yarn end on an inner
layer side of the first yarn supply package or the yarn unwound from the outer layer
side of the second yarn supply package while a yarn end on the outer layer side of
the first yarn supply package is connected to a yarn end on an inner layer side of
the second yarn supply package to a yarn processing device, first holding portion
which holds a part of the yarn between both yarn supply packages while the yarn end
on the inner layer side of the first yarn supply package is connected to the yarn
end on the outer layer side of the second yarn supply package, and
a second holding portion which holds a part of the yarn between both yarn supply packages
while the yarn end on the inner layer side of the second yarn supply package is connected
to the yarn end on the outer layer side of the first yarn supply package, wherein
when a line passing through the first mounting portion and the second mounting portion
is virtually set as a mounting portion line in a front view in which the guide portion
is located between the first mounting portion and the second mounting portion and
the yarn processing device is located behind the guide portion, one of the first holding
portion and the second holding portion is disposed in an area on one side divided
by the mounting portion line as a boundary in the front view and another of the first
holding portion and the second holding portion is disposed in an area on another side
divided by the mounting portion line as a boundary, wherein when a line passing through
the first holding portion and the second holding portion is virtually set as a holding
portion line in the front view, one of the first mounting portion and the second mounting
portion is disposed in an area on one side divided by the holding portion line as
a boundary in the front view and another of the first mounting portion and the second
mounting portion is disposed in an area on another side divided by the holding portion
line as a boundary, wherein the yarn splicing processing device connects the yarn
end of the first yarn supply package mounted on the first mounting portion to the
yarn end of the second yarn supply package mounted on the second mounting portion
and holds a part of the connected yarn by the first holding portion or the second
holding portion, and wherein the yarn supply package rotation device rotates the first
yarn supply package mounted on the first mounting portion around an extension direction
of the first mounting portion as a rotation axis and rotates the second yarn supply
package mounted on the second mounting portion around an extension direction of the
second mounting portion as a rotation axis, and the yarn supply package rotation device
rotates at least one of the first yarn supply package and the second yarn supply package
to remove the slack of the yarn held by the first holding portion or the yarn held
by the second holding portion.
[0016] In this configuration, in the yarn supply device in which the first holding portion
is disposed above the first mounting portion in the vertical direction and above the
second mounting portion in the vertical direction and the second holding portion is
disposed below the first mounting portion in the vertical direction and below the
second mounting portion in the vertical direction, the yarn between both yarn supply
packages is held by an appropriate holding portion (the first holding portion or the
second holding portion) that prevents a local load from being applied to the yarn
between both yarn supply packages or prevents the yarn between both yarn supply packages
from contacting the peripheral parts according to the yarn winding direction in the
yarn supply package supported by both mounting portions and the attachment position
of the yarn supply package to be unwound. As a result, it is possible to suppress
problems from occurring when unwinding or switching the yarn supply package. Furthermore,
in this configuration, it is possible to align the holding states of the yarn pulled
out from the first yarn supply package and the yarn pulled out from the second yarn
supply package by the first holding portion and the second holding portion. Moreover,
in this configuration, it is possible to perform the process of connecting the yarn
end of the first yarn supply package and the yarn end of the second yarn supply package
and the yarn hooking process of holding a part of the yarn in which the yarn supply
packages are connected to each other by the first holding portion and the second holding
portion without requiring the hand of the worker. Accordingly, it is possible to reduce
the burden of the worker who requires the yarn splicing process and the yarn hooking
process.
[0017] A yarn supply device according to one aspect of the present invention comprises:
a yarn supply stand; a yarn splicing processing device; and a slack adjustment mechanism,
wherein the yarn supply stand comprises a first mounting portion on which a first
yarn supply package obtained by winding a yarn on a bobbin is mounted, a second mounting
portion on which a second yarn supply package obtained by winding a yarn on a bobbin
is mounted, a guide portion which guides the yarn unwound from an outer layer side
of the first yarn supply package while a yarn end on an outer layer side of the second
yarn supply package is connected to a yarn end on an inner layer side of the first
yarn supply package or the yarn unwound from the outer layer side of the second yarn
supply package while a yarn end on the outer layer side of the first yarn supply package
is connected to a yarn end on an inner layer side of the second yarn supply package
to a yarn processing device, a first holding portion which holds a part of the yarn
between both yarn supply packages while the yarn end on the inner layer side of the
first yarn supply package is connected to the yarn end on the outer layer side of
the second yarn supply package, and a second holding portion which holds a part of
the yarn between both yarn supply packages while the yarn end on the inner layer side
of the second yarn supply package is connected to the yarn end on the outer layer
side of the first yarn supply package, wherein when a line passing through the first
mounting portion and the second mounting portion is virtually set as a mounting portion
line in a front view in which the guide portion is located between the first mounting
portion and the second mounting portion and the yarn processing device is located
behind the guide portion, one of the first holding portion and the second holding
portion is disposed in an area on one side divided by the mounting portion line as
a boundary in the front view and another of the first holding portion and the second
holding portion is disposed in an area on another side divided by the mounting portion
line as a boundary, wherein when a line passing through the first holding portion
and the second holding portion is virtually set as a holding portion line in the front
view, one of the first mounting portion and the second mounting portion is disposed
in an area on one side divided by the holding portion line as a boundary in the front
view and another of the first mounting portion and the second mounting portion is
disposed in an area on another side divided by the holding portion line as a boundary,
wherein the first holding portion includes a first holding portion for a first mounting
portion disposed at a position closer to the first mounting portion than the second
mounting portion and a first holding portion for a second mounting portion disposed
at a position closer to the second mounting portion than the first mounting portion,
and wherein the second holding portion includes a second holding portion for a first
mounting portion disposed at a position closer to the first mounting portion than
the second mounting portion and a second holding portion for a second mounting portion
disposed at a position closer to the second mounting portion than the first mounting
portion, wherein the yarn splicing processing device connects the yarn end of the
first yarn supply package mounted on the first mounting portion and the yarn end of
the second yarn supply package mounted on the second mounting portion and holds a
part of the connected yarn by both the first holding portion for the first mounting
portion and the first holding portion for the second mounting portion or both the
second holding portion for the first mounting portion and the second holding portion
for the second mounting portion, and wherein the slack adjustment mechanism adjusts
the length of the yarn between the first holding portion for the first mounting portion
and the first holding portion for the second mounting portion to remove the slack
of at least one of the yarn between the first holding portion for the first mounting
portion and the first yarn supply package and the yarn between the first holding portion
for the second mounting portion and the second yarn supply package or adjusts the
length of the yarn between the second holding portion for the first mounting portion
and the second holding portion for the second mounting portion to remove the slack
of at least one of the yarn between the second holding portion for the first mounting
portion and the first yarn supply package and the yarn between the second holding
portion for the second mounting portion and the second yarn supply package.
[0018] In this configuration, in the yarn supply device in which the first holding portion
is disposed above the first mounting portion in the vertical direction and above the
second mounting portion in the vertical direction and the second holding portion is
disposed below the first mounting portion in the vertical direction and below the
second mounting portion in the vertical direction, the yarn between both yarn supply
packages is held by an appropriate holding portion (the first holding portion or the
second holding portion) that prevents a local load from being applied to the yarn
between both yarn supply packages or prevents the yarn between both yarn supply packages
from contacting the peripheral parts according to the yarn winding direction in the
yarn supply package supported by both mounting portions and the attachment position
of the yarn supply package to be unwound. As a result, it is possible to suppress
problems from occurring when unwinding or switching the yarn supply package. In this
configuration, it is possible to hold the yarn between both yarn supply packages in
a more appropriate state depending on the yarn pulled out from the first yarn supply
package or the yarn pulled out from the second yarn supply package. Accordingly, it
is possible to more reliably suppress problems from occurring when unwinding or switching
the yarn supply package. Furthermore, in this configuration, it is possible to perform
the process of connecting the yarn end of the first yarn supply package and the yarn
end of the second yarn supply package and the yarn hooking process of holding a part
of the yarn in which the yarn supply packages are connected to each other by each
holding portion provided as the first holding portion and each holding portion provided
as the second holding portion without requiring the hand of the worker. Accordingly,
it is possible to reduce the burden of the worker who requires the yarn splicing process
and the yarn hooking process.
[0019] The yarn supply device according to one aspect of the present invention may further
comprise: a yarn supply package rotation device which rotates the first yarn supply
package mounted on the first mounting portion around an extension direction of the
first mounting portion as a rotation axis and rotates the second yarn supply package
mounted on the second mounting portion around an extension direction of the second
mounting portion as a rotation axis, wherein the yarn supply package rotation device
rotates at least one of the first yarn supply package and the second yarn supply package
to remove the slack of the yarn held by the first holding portion or the yarn held
by the second holding portion.
[0020] In the yarn supply stand of this configuration, it is possible to perform the process
of connecting the yarn end of the first yarn supply package and the yarn end of the
second yarn supply package and the yarn hooking process of holding a part of the yarn
in which the yarn supply packages are connected to each other by the first holding
portion and the second holding portion without requiring the hand of the worker. Accordingly,
it is possible to reduce the burden of the worker who requires the yarn splicing process
and the yarn hooking process.
[0021] The yarn supply device according to one aspect of the present invention may further
comprise: a slack adjustment mechanism which adjusts the length of the yarn between
the first holding portion for the first mounting portion and the first holding portion
for the second mounting portion to remove the slack of at least one of the yarn between
the first holding portion for the first mounting portion and the first yarn supply
package and the yarn between the first holding portion for the second mounting portion
and the second yarn supply package or adjusts the length of the yarn between the second
holding portion for the first mounting portion and the second holding portion for
the second mounting portion to remove the slack of at least one of the yarn between
the second holding portion for the first mounting portion and the first yarn supply
package and the yarn between the second holding portion for the second mounting portion
and the second yarn supply package.
[0022] In this configuration, it is possible to perform the process of connecting the yarn
end of the first yarn supply package and the yarn end of the second yarn supply package
and the yarn hooking process of holding a part of the yarn in which the yarn supply
packages are connected to each other by each holding portion provided as the first
holding portion and each holding portion provided as the second holding portion without
requiring the hand of the worker. Accordingly, it is possible to reduce the burden
of the worker who requires the yarn splicing process and the yarn hooking process.
[0023] A yarn supply stand according to one aspect of the present invention comprises: a
first mounting portion on which the first yarn supply package obtained by winding
a yarn on a bobbin is mounted; a second mounting portion on which the second yarn
supply package obtained by winding a yarn on a bobbin is mounted; a guide portion
which guides the yarn unwound from an outer layer side of the first yarn supply package
while a yarn end on an outer layer side of the second yarn supply package is connected
to a yarn end on an inner layer side of the first yarn supply package or the yarn
unwound from the outer layer side of the second yarn supply package while a yarn end
on the outer layer side of the first yarn supply package is connected to a yarn end
on an inner layer side of the second yarn supply package to a yarn processing device;
the first holding portion which holds a part of the yarn between both yarn supply
packages while the yarn end on the inner layer side of the first yarn supply package
is connected to the yarn end on the outer layer side of the second yarn supply package;
and the second holding portion which holds a part of the yarn between both yarn supply
packages while the yarn end on the inner layer side of the second yarn supply package
is connected to the yarn end on the outer layer side of the first yarn supply package,
wherein when a line passing through the first mounting portion and the second mounting
portion is virtually set as a mounting portion line in a front view in which the guide
portion is located between the first mounting portion and the second mounting portion
and the yarn processing device is located behind the guide portion, one of the first
holding portion and the second holding portion is disposed in an area on one side
divided by the mounting portion line as a boundary in the front view and another of
the first holding portion and the second holding portion is disposed in an area on
another side divided by the mounting portion line as a boundary, wherein when a line
passing through the first holding portion and the second holding portion is virtually
set as a holding portion line in the front view, one of the first mounting portion
and the second mounting portion is disposed in an area on one side divided by the
holding portion line as a boundary in the front view and another of the first mounting
portion and the second mounting portion is disposed in an area on another side divided
by the holding portion line as a boundary, wherein the first holding portion includes
a first holding portion for a first mounting portion disposed at a position closer
to the first mounting portion than the second mounting portion and a first holding
portion for a second mounting portion disposed at a position closer to the second
mounting portion than the first mounting portion, and wherein the second holding portion
includes a second holding portion for a first mounting portion disposed at a position
closer to the first mounting portion than the second mounting portion and a second
holding portion for a second mounting portion disposed at a position closer to the
second mounting portion than the first mounting portion.
[0024] In this configuration, the first holding portion and the second holding portion are
arranged on one side and the other side of the area divided by the mounting portion
line as a boundary in the front view. Accordingly, since it is possible to select
the holding portion (the first holding portion or the second holding portion) holding
the yarn between both yarn supply packages according to the position of the yarn pulled
out from the (spare) yarn supply package after switching, it is possible to hold the
yarn between both yarn supply packages in an appropriate state for each situation.
As a result, it is possible to suppress problems from occurring when unwinding or
switching the yarn supply package. Furthermore, in this configuration, it is possible
to hold the yarn between both yarn supply packages in a more appropriate state depending
on the yarn pulled out from the first yarn supply package or the yarn pulled out from
the second yarn supply package. Accordingly, it is possible to more reliably suppress
problems from occurring when unwinding or switching the yarn supply package.
[0025] In the yarn supply stand according to one aspect of the present invention, when a
line passing through the guide portion, the first holding portion and the second holding
portion may be virtually set as a guide portion/holding portion line in a plan view
in which the first holding portion and the second holding portion overlap each other,
the first mounting portion and the second mounting portion are arranged line-symmetrically
with respect to the guide portion/holding portion line. In the yarn supply stand of
this configuration, it is possible to align the holding states of the yarn pulled
out from the first yarn supply package and the yarn pulled out from the second yarn
supply package by the first holding portion and the second holding portion.
[0026] In the yarn supply stand according to one aspect of the present invention, the mounting
portion line may be a direction along a horizontal direction, and the holding portion
line may be a direction along a vertical direction. In this configuration, one of
the first holding portion and the second holding portion is disposed above the first
mounting portion in the vertical direction and above the second mounting portion in
the vertical direction and another of the first holding portion and the second holding
portion is disposed below the first mounting portion in the vertical direction and
below the second mounting portion in the vertical direction. Accordingly, since it
is possible to select the holding portion (the first holding portion or the second
holding portion) holding the yarn between both yarn supply packages according to the
position of the yarn pulled out from the (spare) yarn supply package after switching,
it is possible to hold the yarn between both yarn supply packages in an appropriate
state for each situation. As a result, it is possible to suppress problems from occurring
when unwinding or switching the yarn supply package.
[0027] According to one aspect of the present invention, it is possible to suppress problems
from occurring when unwinding or switching the yarn supply package.
BRIEF DESCRIPTION OF THE DRAWINGS
[0028]
FIG. 1 is a diagram showing a configuration of a false-twist texturing device and
a package exchanging device according to an embodiment.
FIG. 2 is a perspective view showing a yarn supply package mounted with an adapter.
FIG. 3 is a perspective view showing a creel stand.
FIG. 4 is an enlarged perspective view showing a pair of pegs in the creel stand.
FIG. 5 is a front view showing a clip.
FIG. 6A is a diagram illustrating a front view of the creel stand. FIG. 6B is a diagram
illustrating a plan view of the creel stand. FIG. 6C is a diagram illustrating a side
view of the creel stand.
FIG. 7 is a perspective view showing a peg.
FIG. 8 is a perspective view showing the package exchanging device.
FIG. 9 is a diagram showing a schematic configuration of an exchanging unit.
FIG. 10 is a perspective view showing a yarn splicing device.
FIG. 11 is a perspective view showing the yarn splicing device.
FIG. 12 is a block diagram showing a functional configuration of the package exchanging
device including a yarn splicing processing device.
FIGS. 13A and 13B are perspective views showing a series of operations of the yarn
splicing processing device.
FIGS. 14A and 14B are perspective views showing a series of operations of the yarn
splicing processing device.
FIGS. 15A and 15B are perspective views showing a series of operations of the yarn
splicing processing device.
FIG. 16 is an enlarged perspective view showing a pair of pegs in a creel stand according
to a modified example.
FIGS. 17A and 17B are perspective views showing a series of operations of the yarn
splicing processing device according to the modified example.
FIGS. 18A and 18B are perspective views showing a series of operations of the yarn
splicing processing device according to the modified example.
FIG. 19 is a perspective view showing a series of operations of the yarn splicing
processing device according to the modified example.
DETAILED DESCRIPTION
[0029] Hereinafter, preferred embodiments of the present invention will be described in
detail with reference to the accompanying drawings. In the description of the drawings,
the same is designated by the same reference numerals, and duplicate description will
be omitted.
[0030] A yarn feeding device 100 of an embodiment includes, as shown in FIG. 1, a creel
stand (yarn feeding stand) 20 and a yarn joining processing device 9A. The creel stand
20 is provided in a false-twist texturing device 1. The yarn joining processing device
9A of an embodiment is mounted on a package exchange device 9. The yarn joining processing
device 9A includes a yarn joining device 60 and a control unit 94 which will be described
in detail in the rear stage (see FIGS. 1 and 11). In the following description, the
"Z direction" shown in the drawing is the vertical direction (up and down direction),
the "X direction" is the horizontal direction, and the "Y direction" is the horizontal
direction orthogonal to the "X direction" and is also the direction orthogonal to
both the X direction and the Z direction.
[0031] The false-twist texturing device 1 shown in FIG. 1 manufactures a winding package
P by processing a yarn (synthetic yarn) Y supplied from a plurality of yarn feeding
packages P. The yarn Y is, for example, a synthetic yarn made of thermoplastic synthetic
fibers such as polyester and polyamide. The yarn feeding package P is formed by winding
a partially oriented yarn (POY) on a yarn feeding bobbin B. The winding package is
formed by winding a draw textured yarn (DTY) on a winding bobbin. That is, the false-twist
texturing device 1 processes the yarn Y which is the partially oriented yarn to generate
the draw textured yarn.
[0032] As shown in FIG. 2, an adapter 8 is attached to the yarn supply package P. The adapter
8 is attached to an end portion of a yarn supply bobbin B of the yarn supply package
P to be synchronously rotatable. The adapter 8 is formed in a cylindrical shape. The
adapter 8 is provided with a holding hole portion 81 into which the yarn end of the
yarn Y on the outer layer side (foremost yarn side) of the yarn supply package P (hereinafter,
the yarn end of the yarn Y on the outer layer side is also referred to as a "first
yarn end Yl") enters and is held. Additionally, the yarn end of the yarn Y on the
inner layer side (rearmost yarn side) of the yarn supply package P is also referred
to as a "second yarn end Y2" in the following description.
[0033] As shown in FIG. 1, the false-twist texturing device 1 includes a yarn supply section
2 and a processing section (yarn texturing device) 3. A plurality of configurations
of the yarn supply section 2 and the processing section 3 to be described later are
arranged in the Y direction (machine base longitudinal direction) orthogonal to a
traveling surface of the yarn Y in which a yarn path from the yarn supply section
2 to the processing section 3 is disposed (paper surface of FIG. 1).
[0034] The yarn feeding portion 2 feeds the yarn Y to the processing portion 3. The yarn
feeding portion 2 includes a creel stand 20 which holds a plurality of the yarn feeding
packages P. As shown in FIGS. 1 and 3, the creel stand 20 includes a creel base portion
21, a first support column 22, a second support column 23, a partition dish plate
24, a peg (first mounting portion/second mounting portion) 25, a guide portion 26,
and a pair of clips (locking portion) 27 and 27. The creel base portion 21 is installed
on a floor surface or the like and supports the first support column 22 and the second
support column 23. The first support column 22 and the second support column 23 are
erected on the creel base portion 21.
[0035] The first support column 22 extends along the Z direction (vertical direction). The
first support columns 22 are arranged at equal intervals in the Y direction. The first
support column 22 is disposed at the rear side F1 of the creel stand 20 in the X direction.
The rear side F1 of the X direction is a side in which the processing portion 3 to
be described later in detail in the rear stage is disposed and a side in which the
yarn Y is sent to the processing portion 3 for performing false-twist texturing.
[0036] The second support column 23 extends along the Z direction. The second support columns
23 are arranged in pairs in the Y direction and a plurality of pairs of second support
columns 23 and 23 are arranged in the Y direction. The second support column 23 is
disposed at the front side F2 of the creel stand 20 in the X direction. The front
side F2 of the X direction is a side in which the package exchange device 9 to be
described later in detail in the rear stage travels and a side in which the operator
performs a yarn joining processing work. A group of the first support columns 22 including
the plurality of first support columns 22 and a group of the second support columns
23 including the plurality of second support columns 23 are arranged in the X direction
to face each other.
[0037] The partition dish plate 24 is provided to straddle the first support column 22 and
the second support column 23. The partition dish plate 24 is a dish plate-shaped member
and is arranged at a predetermined interval in the Z direction. The partition dish
plate 24 prevents the yarn feeding package P from falling from the peg 25.
[0038] The peg 25 supports the yarn feeding package P. The peg 25 is provided in the second
support column 23. A plurality of (for example, four) pegs 25 are arranged at predetermined
intervals in the Z direction of the second support column 23. The peg 25 is disposed
between two partition dish plates 24 in the Z direction. Further, the pegs 25 are
arranged in pairs corresponding to the second support columns 23 and 23 and a plurality
of sets (pairs) of the pegs 25 and 25 are arranged in the Y direction.
[0039] In the peg 25 with this configuration, the yarn Y of the yarn feeding package P supported
by one peg 25 of the pair of pegs can be connected to the yarn Y of the yarn feeding
package P supported by the other peg 25 of the pair of pegs. Specifically, the first
yarn end Y1 of the yarn feeding package P supported by one peg 25 of the pair of pegs
is connected to the second yarn end Y2 of the yarn feeding package P supported by
the other peg 25 of the pair of pegs or the second yarn end Y2 of the yarn feeding
package P supported by one peg 25 of the pair of pegs is connected to the first yarn
end Y1 of the yarn feeding package P supported by the other peg 25 of the pair of
pegs. Accordingly, one yarn Y is fed from two yarn feeding packages P and P respectively
supported by the pair of pegs 25 and 25. That is, the yarn Y can be continuously supplied
to the processing portion 3.
[0040] Hereinafter, for convenience of description, one of the pair of pegs 25 and 25 is
referred to as a first peg (first mounting portion) 25A and the other of the pair
of pegs 25 and 25 is referred to as a second peg (second mounting portion) 25B. Further,
the yarn supply package P mounted on the first peg 25A is referred to as a first yarn
supply package PA and the yarn supply package P mounted on the second peg 25B is referred
to as a second yarn supply package PB.
[0041] The guide portion 26 guides the yarn Y unwound from the outer layer side of the first
yarn supply package PA in a state in which the first yarn end Y1 of the second yarn
supply package PB is connected to the second yarn end Y2 of the first yarn supply
package PA (a state shown in FIG. 4) or the yarn Y unwound from the outer layer side
of the second yarn supply package PB in a state in which the first yarn end Y1 of
the first yarn supply package PA is connected to the second yarn end Y2 of the second
yarn supply package PB to the processing section 3. The guide portion 26 is formed
by an elongated hole 26B formed in a plate-shaped member 26A that is fixed to a part
of the rear side F1 in the X direction of the partition plate 24 and extends in the
Z-axis direction. Additionally, in FIGS. 4 and 16, the yarn Y which is guided to the
processing section 3 while the yarn Y unwound from the outer layer side of the first
yarn supply package PA passes through the guide portion 26 is omitted.
[0042] The pair of clips 27 and 27 holds a part of the yarn Y in which the second yarn end
Y2 of the first yarn supply package PA is connected to the first yarn end Y1 of the
second yarn supply package PB or a part of the yarn Y in which the second yarn end
Y2 of the second yarn supply package PB is connected to the first yarn end Y1 of the
first yarn supply package PA. In the pair of clips 27 and 27, hereinafter, one of
the pair of clips 27 and 27 is referred to as a first clip (first holding portion)
28 and the other of the pair of clips 27 and 27 is referred to as a second clip (second
holding portion) 29.
[0043] Here, as shown in FIG. 6A, a front view is defined as viewing the creel stand 20
so that the guide portion 26 is located between the first peg 25A and the second peg
25B and the processing section 3 is located behind the guide portion 26. In the front
view of the creel stand 20, the first peg 25A is disposed on the left side of the
guide portion 26, the second peg 25B is disposed on the right side of the guide portion
26, the first clip 28 is disposed on the upper side of the guide portion 26, and the
second clip 29 is disposed on the lower side of the guide portion 26.
[0044] As shown in FIGS. 4 and 5, the first clip 28 and the second clip 29 are fixed to
the partition plate 24 through a second mounting bracket 24B attached to a first mounting
bracket 24A fixed to the partition plate 24. The first clip 28 and the second clip
29 include a pair of disk plates 281 (291) and 282 (292), an elastic member 283 (293),
and a shaft portion 284 (294). The pair of disk plates 281 (291) and 282 (292) is
provided to be movable within a predetermined range in the extension direction of
the shaft portion 284 (294) and is biased toward the second mounting bracket 24B by
the elastic member 283 (293). When the yarn Y is disposed between the pair of disk
plates 281 (291) and 282 (292), the yarn Y is locked by being clamped by the pair
of disk plates 281 (291) and 282 (292). Additionally, the elastic force of the elastic
member 283 (293) is appropriately selected or adjusted so that the locking by the
pair of disk plates 281 (291) and 282 (292) is released when the worker pulls the
yarn Y.
[0045] The configuration of the first clip 28 and the second clip 29 is not limited to the
configuration described above, and any configuration that can hold the yarn Y may
be used. For example, the elastic member 283 (293) that biases the pair of disk plates
281 (291) and 282 (292) is not essentially required and the yarn Y may be held by
the own weight of the disk plates 281 (291) and 282 (292).
[0046] As shown in FIGS. 4 and 6A, when the creel stand 20 is viewed from the front side,
the first clip 28 and the second clip 29 are arranged between the first peg 25A and
the second peg 25B in the horizontal direction and are arranged to sandwich both the
first peg 25A and the second peg 25B in the vertical direction. When it is assumed
that the fully wound first yarn supply package PA is mounted on the first peg 25A
and the fully wound second yarn supply package PB is mounted on the second peg 25B,
the first clip 28 and the second clip 29 are arranged to sandwich the fully wound
first yarn supply package PA and the fully wound second yarn supply package PB in
the vertical direction. That is, the first clip 28 is disposed above the outer edge
of the fully wound first yarn supply package PA in the vertical direction and the
second clip 29 is disposed below the outer edge of the fully wound second yarn supply
package PB.
[0047] Hereinafter, the arrangement positions of the first clip 28 and the second clip 29
will be described in more detail. In the front view shown in FIG. 6A, the line passing
through the first peg 25A and the second peg 25B is virtually set as a mounting portion
line L1. At this time, one of the first clip 28 and the second clip 29 is disposed
in an area on one side divided by the mounting portion line L1 as a boundary in the
front view and the other of the first clip 28 and the second clip 29 is disposed in
an area on the other side divided by the mounting portion line L1 as a boundary. In
this embodiment, the mounting portion line L1 extends in a direction along the horizontal
direction, the first clip 28 is disposed in an upper area A1 divided by the mounting
portion line L1 in the front view, and the second clip 29 is disposed in a lower area
A2 divided by the mounting portion line L1.
[0048] Further, here, the line passing through the first clip 28 and the second clip 29
is virtually set as a holding portion line L2 in the front view. At this time, one
of the first peg 25A and the second peg 25B is disposed in an area on one side divided
by the holding portion line L2 as a boundary in the front view and the other of the
first peg 25A and the second peg 25B is disposed in an area on the other side divided
by the holding portion line L2 as a boundary. In this embodiment, the holding portion
line L2 extends in a direction along the vertical direction, the first peg 25A is
disposed in a left area A3 divided by the holding portion line L2 as a boundary in
the front view, and the second peg 25B is disposed in a right area A4 divided by the
holding portion line L2 as a boundary.
[0049] Additionally, the line passing through the first peg 25A and the second peg 25B mentioned
herein is the line passing through a point in which the first peg 25A supports the
first yarn supply package PA and a point in which the second peg 25B supports the
second yarn supply package PB in the front view. The point in which the first peg
25A supports the first yarn supply package PA is a portion of the first peg 25A and
can be, for example, a portion between two yarn supply package support portions 251
and 251 to be described later in detail. Further, the point in which the second peg
25B supports the second yarn supply package PB is a portion of the second peg 25B
and can be, for example, a portion between two yarn supply package support portions
251 and 251 to be described later in detail. Further, the line passing through the
first clip 28 and the second clip 29 is the line passing through a portion of the
first clip 28 and a portion of the second clip 29. A portion of the first clip 28
is, for example, the position of the shaft portion 284. A portion of the second clip
29 is, for example, the position of the shaft portion 294.
[0050] In this embodiment, in the front view, the first clip 28 is disposed at a position
farther from the mounting portion line L1 than the outer edge of the fully wound first
yarn supply package PA mounted on the first peg 25A and is disposed at a position
farther from the mounting portion line L1 than the outer edge of the fully wound second
yarn supply package PB mounted on the second peg 25B. The second clip 29 is disposed
at a position farther from the mounting portion line L1 than the outer edge of the
fully wound first yarn supply package PA mounted on the first peg 25A and is disposed
at a position farther from the mounting portion line L1 than the outer edge of the
fully wound second yarn supply package PB mounted on the second peg 25B.
[0051] As shown in FIG. 6B, the first clip 28 and the second clip 29 are arranged to overlap
each other in a plan view when viewed from the vertical direction (the upper side
in the Z direction). In such a plan view, the line passing through the guide portion
26, the first clip 28, and the second clip 29 is virtually set as a guide portion/holding
portion line L3. In this embodiment, the first peg 25A and the second peg 25B are
arranged line-symmetrically with respect to the guide portion/holding portion line
L3.
[0052] As shown in FIG. 6C, the first peg 25A and the second peg 25B are arranged to overlap
each other in a side view when viewed from the left side in the Y direction. In such
a side view, the line passing through the guide portion 26, the first peg 25A, and
the second peg 25B is virtually set as a guide portion/mounting portion line L4. In
this embodiment, the first clip 28 and the second clip 29 are arranged line-symmetrically
with respect to the guide portion/mounting portion line L4.
[0053] The first clip 28 and the second clip 29 which are in the above-described arrangement
relationship hold a part of the yarn Y in which the second yarn end Y2 of the first
yarn supply package PA is connected to the first yarn end Y1 of the second yarn supply
package PB or a part of the yarn Y in which the second yarn end Y2 of the second yarn
supply package PB is connected to the first yarn end Y1 of the first yarn supply package
PA.
[0054] One feature of the creel stand 20 of this embodiment is that the pair of clips 27
and 27 (that is, the first clip 28 and the second clip 29 described above) is provided
with respect to the pair of pegs 25 (that is, the first peg 25A and the second peg
25B). Specifically, one feature of the creel stand 20 of this embodiment is that the
first clip 28 and the second clip 29 are provided to hold the yarn Y which is determined
according to the winding direction of the yarn Y in the first yarn supply package
PA and the second yarn supply package PB (that is, clockwise or counterclockwise direction)
and the connection state between the yarn Y of the first yarn supply package PA and
the yarn Y of the second yarn supply package PB (that is, a part of the yarn Y in
which the second yarn end Y2 of the first yarn supply package PA is connected to the
first yarn end Y1 of the second yarn supply package PB or a part of the yarn Y in
which the second yarn end Y2 of the second yarn supply package PB is connected to
the first yarn end Y1 of the first yarn supply package PA) . Hereinafter, this will
be described in detail with reference to FIG. 4.
(A) Case of winding the yarn Y of the yarn supply package P counterclockwise in the
front view
[0055] The first clip 28 holds a part of the yarn Y in which the second yarn end Y2 of the
second yarn supply package PB is connected to the first yarn end Y1 of the first yarn
supply package PA (the dashed yarn Y shown in FIG. 4) when the yarn Y wound on the
second yarn supply package PB is unwound. The second clip 29 holds a part of the yarn
Y in which the second yarn end Y2 of the first yarn supply package PA is connected
to the first yarn end Y1 of the second yarn supply package PB (the solid yarn Y shown
in FIG. 4) when the yarn Y wound on the first yarn supply package PA is unwound.
(B) Case of winding the yarn Y of the first yarn supply package P clockwise in the
front view
[0056] The first clip 28 holds a part of the yarn Y (not shown) in which the second yarn
end Y2 of the first yarn supply package PA is connected to the first yarn end Y1 of
the second yarn supply package PB when the yarn Y wound on the first yarn supply package
PA is unwound. The second clip 29 holds a part of the yarn Y (not shown) in which
the second yarn end Y2 of the second yarn supply package PB is connected to the first
yarn end Y1 of the first yarn supply package PA when the yarn Y wound on the second
yarn supply package PB is unwound.
[0057] Table 1 below is a table showing the clip 27 (the first clip 28 or the second clip
29) holding the yarn Y in a connected state which is determined according to the winding
direction and the connection state.
[Table 1]
Connection state |
Winding direction of Yarn supply package P |
|
Counterclockwise |
Clockwise |
State in which second yarn end Y2 of first yarn supply package PA is connected to
first yarn end Y1 of second yarn supply package PB when yarn Y wound on the first
yarn supply package PA is unwound |
Second clip 29 |
First clip 28 |
State in which second yarn end Y2 of second yarn supply package PB is connected to
first yarn end Y1 of first yarn supply package PA when yarn Y wound on second yarn
supply package PB is unwound |
First clip 28 |
Second clip 29 |
[0058] As indicated by the dashed yarn Y in FIG. 4, the first clip 28 is disposed so that
an angle θ1 formed by the yarn Y between the outer edge of the fully wound first yarn
supply package PA and the second clip 29 does not become equal to or larger than 30°
with respect to the line parallel to the mounting portion line L1 (that is, the horizontal
direction) when the yarn Y is unwound from the second yarn supply package PB. As indicated
by the solid yarn Y in FIG. 4, the second clip 29 is disposed so that an angle θ2
formed by the yarn Y between the outer edge of the fully wound second yarn supply
package PB and the second clip 29 does not become equal to or larger than 30° with
respect to the line parallel to the mounting portion line L1 (that is, the horizontal
direction) when the yarn Y is unwound from the first yarn supply package PA. Accordingly,
since it is possible to suppress a change in the holding state by the first clip 28
and the second clip 29, the first clip 28 and the second clip 29 can stably hold the
yarn Y.
[0059] As shown in FIG. 7, the peg 25 includes a yarn feeding package support portion 251,
a peg body portion 252, a first rotating mechanism 253, a body support portion 254,
and a second rotating mechanism 255.
[0060] The yarn feeding package support portion 251 locks the yarn feeding package P. The
yarn feeding package support portion 251 includes package support members 251A and
251B. The package support members 251A and 251B are bar-shaped members. The package
support members 251A is rotatably supported by the peg body portion 252 around the
extension direction of as a rotation axis. The package support members 251B is rotatably
supported by the peg body portion 252 around the extension direction of as a rotation
axis. The package support members 251A and 251B are arranged at predetermined intervals
to extend in one direction and to be parallel to each other. The peg 25 supports the
yarn feeding package 1 at two points by the package support members 251A and 251B.
[0061] One end portion of the package support member 251A in the extension direction is
provided with a covering portion 251D. One end portion of the package support member
251B in the extension direction is provided with a covering portion 251E. The covering
portions 251D and 251E are formed of, for example, rubber (resin) having a large friction
coefficient. The covering portions 251D and 251E come into contact with the inner
peripheral surface of the yarn feeding bobbin B of the yarn feeding package P. One
end of the package support member 251A and one end of the package support member 251B
are connected by a connection member 251F.
[0062] The peg body 252 supports the package support member 251A to be rotatable around
the extension direction of the package support member 251A as a rotation axis and
supports the package support member 251B to be rotatable around the extension direction
of the package support member 251B as a rotation axis. The peg body portion 252 is
provided with a regulation member 252A. The regulation member 252A is formed, for
example, in a disk shape. The regulation member 252A is disposed on one side surface
of the peg body portion 252. The regulation member 252A is attached by inserting the
package support member 251A and the package support member 251B therethrough. The
regulation member 252A faces the end surface of the yarn feeding package P and regulates
the movement of the yarn feeding package P in the extension direction of the package
support member 251A and the package support member 251B. An insertion hole 252B is
formed in the peg body portion 252. The second support column 23 (see FIG. 3) of the
creel stand 20 is inserted through the insertion hole 252B.
[0063] The first rotating mechanism 253 includes a driven pulley 253A, a drive pulley 253B,
a power transmission belt 253C, and a first wheel 253D. The driven pulley 253A is
provided at the other end of the package support member 251A. The drive pulley 253B
is provided at the other end of the package support member 251B. The power transmission
belt 253C is hung on the driven pulley 253A and the drive pulley 253B. The first wheel
253D is provided in the drive pulley 253B (the package support member 251B). In this
embodiment, the first wheel 253D is a Geneva wheel that constitutes a Geneva mechanism.
The first wheel 253D rotates in accordance with the rotational driving of the first
yarn joining processing driver 621 or the second yarn joining processing driver 631
of the yarn joining device 60 to be described later. The first wheel 253D rotates
around the extension direction of the package support member 251B as a rotation axis
by the rotational driving of the first yarn splicing driver 621 or the second yarn
splicing driver 631 of the yarn splicing device 60 to be described later.
[0064] The body support portion 254 is formed in a tubular shape. One end of the body support
portion 254 is connected to the peg body portion 252 and the body support portion
254 and the peg body portion 252 are integrally formed with each other. The hollow
portion of the body support portion 254 communicates with the insertion hole 252B
of the peg body portion 252. The second support column 23 (see FIG. 3) of the creel
stand 20 is inserted into the body support portion 254.
[0065] The second rotating mechanism 255 is a Geneva wheel that constitutes the Geneva mechanism.
The second rotating mechanism 255 is connected to the other end of the body support
portion 254 and the second rotating mechanism 255 and the body support portion 254
are integrally formed with each other. The second rotating mechanism 255 rotates by
the driving of a rotation driver 932A of a rotation device 932 to be described later.
The peg body 252 rotates around the second support column 23 as the second rotation
mechanism 255 rotates. Accordingly, the package support members 251A and 251B rotate
around the second support column 23 as a rotation axis.
[0066] The processing section 3 performs a false-twist texturing process on the yarn Y supplied
from the plurality of yarn supply packages P and winds the processed yarn onto a winding
bobbin to form a winding package.
[0067] The package exchange device 9 collects the yarn feeding bobbin B from the peg 25
and attaches the yarn feeding package P to the peg 25. As shown in FIG. 6, the package
exchange device 9 travels along a rail 98. The rail 98 is laid on a floor and extends
in the Y direction. That is, the package exchange device 9 is provided to be able
to travel along the Y direction. The package exchange device 9 includes a traveling
unit 90, an elevating unit 91, a holding unit 92, an exchange unit 93, the yarn joining
device 60, and a control unit 94 (see FIG. 12) which controls the operations of the
units 90, 91, 92, and 93 and the yarn joining device 60.
[0068] The traveling unit 90 is provided with a vehicle wheel traveling on the rail 98,
a drive mechanism, and the like. The traveling unit 90 supports the elevating unit
91, the holding unit 92, and the exchange unit 93. The elevating unit 91 is elevated
while the operator gets thereon. The elevating unit 91 is used for the maintenance
or the like. The elevating unit 91 includes a work table 911 on which the operator
gets, a guide portion 912 which supports the work table 911 to be movable in the Z
direction, and a drive mechanism (not shown) which drives the work table.
[0069] The holding unit 92 holds the plurality of (for example, four) yarn feeding packages
P. The holding unit 92 receives the yarn feeding package P supplied from a package
replenishing device (not shown), temporarily stores the yarn feeding package P, and
supplies the yarn feeding package P to the exchange unit 93. The holding unit 92 is
provided to be rotatable in the range of about 90. More specifically, the holding
unit 92 is provided to be rotatable between a replenishment position in which the
yarn feeding package P is supplied from the package replenishing device and a supply
position (a position shown in FIG. 6) in which the yarn feeding package P is supplied
to the exchange unit 93.
[0070] The exchange unit 93 exchanges the yarn feeding bobbin B and the yarn feeding package
P in the peg 25. Specifically, the exchange unit 93 collects the yarn feeding bobbin
B from the peg 25 and attaches the yarn feeding package P to the peg 25. The exchange
unit 93 is provided adjacent to the holding unit 92. As shown in FIG. 9, the exchange
unit 93 includes a base 931, a rotation device 932, a collection device 933, a supply
device 934, and a rotary table 936. Additionally, in FIG. 8, the description of the
rotation device 932, the collection device 933, the supply device 934, the rotary
table 936, and the yarn joining device 60 described in detail in the rear stage is
omitted.
[0071] The base 931 includes the rotation device 932, the collection device 933, the supply
device 934, and the rotary table 936 supporting the yarn joining device 60. The base
931 is provided to be elevatable along the Z direction. The rotation device 932 rotates
the peg 25 around the second support column 23 as a rotation axis (see FIG. 3). The
rotation device 932 includes a rotation driver 932A and a rotation arm 932B.
[0072] The rotation driver 932A rotates the second rotation mechanism 255 (see FIG. 7) of
the peg 25 around the second support column 23 as a rotation axis. The rotation driver
932A is a Geneva driver that constitutes the Geneva mechanism. The rotation driver
932A is rotated by the rotational driving of the motor (not shown) . The rotation
arm 932B supports the rotation driver 932A. The rotation arm 932B is provided to be
swingable in the horizontal direction. The rotation arm 932B is driven by, for example,
a motor or an air cylinder (not shown). The rotation device 932 is provided to correspond
to one peg 25 and the other peg 25 provided in pairs in the creel stand 20.
[0073] The rotation device 932 changes the direction of the peg 25 by rotating the peg 25
when attaching the yarn feeding package P to the peg 25. More specifically, the rotation
device 932 swings the rotation arm 932B so that the rotation driver 932A engages with
the second rotating mechanism 255 of the peg 25. The rotation device 932 rotates the
rotation driver 932A in one direction by engaging the rotation driver 932A and the
second rotation mechanism 255 with each other. In the peg 25, when the second rotation
mechanism 255 rotates around the second support column 23 as a rotation axis, the
body support portion 254 rotates around the second support column 23 as a rotation
axis. Accordingly, the peg 25 rotates around the second support column 23 as a rotation
axis and the tip of the yarn supply package support portion 251 faces the exchanging
unit 93.
[0074] The collection device 933 is provided in the rotary table 936 rotatably supported
by the base 931. The collection device 933 collects the yarn feeding bobbin B from
the peg 25. The collection device 933 includes a yarn feeding bobbin support portion
933A which supports the yarn feeding bobbin B. The collection device 933 supports
the yarn feeding bobbin B by advancing the yarn feeding bobbin support portion 933A
while the yarn feeding bobbin B is not supported by the peg 25 and collects the yarn
feeding bobbin B from the peg 25 by retracting the yarn feeding bobbin support portion
933A while the yarn feeding bobbin B is supported by the peg 25.
[0075] The supply device 934 is provided in the rotary table 936 rotatably supported by
the base 931. The supply device 934 supplies the yarn feeding package P to the peg
25. The supply device 934 includes a yarn feeding package supply unit 934A supporting
the yarn feeding package P. The supply device 934 attaches the yarn feeding package
P to the peg 25 by advancing the yarn feeding package supply unit 934A while the yarn
feeding package P is supported by the peg 25 and supplies the yarn feeding package
P to the peg 25 by retracting the yarn feeding package supply unit 934A while the
yarn feeding package P is not supported by the peg 25.
[0076] The package exchange device 9 connects the yarn ends of the pair of yarn feeding
packages P and P attached to the pair of pegs 25 and 25 of the creel stand 20 (yarn
joining process) and locks the connected yarn to at least one clip 29 provided in
the creel stand 20 (the yarn hooking process) in addition to the collection of the
yarn feeding bobbin B from the peg 25 and the attachment of the yarn feeding package
P to the peg 25. The yarn joining process and the yarn hooking process are performed
by the yarn joining processing device 9A. The yarn joining processing device 9A includes
the yarn joining device 60 and the control unit 94.
[0077] The yarn splicing device 60 is provided in the turntable 936 rotatably supported
by the base 931. The yarn splicing device 60 splices the first yarn end Y1 of the
first yarn supply package PA supported by the first peg 25A and the second yarn end
Y2 of the second yarn supply package PB supported by the second peg 25B or splices
the second yarn end Y2 of the first yarn supply package PA supported by the first
peg 25A and the first yarn end Y1 of the second yarn supply package PB supported by
the second peg 25B. As shown in FIGS. 10, 11, and 12, the yarn joining device 60 includes
a yarn hooking mechanism 61, a first rotation mechanism 62, a second rotation mechanism
63, and a yarn joining processing mechanism 64.
[0078] The yarn hooking mechanism 61 captures the yarn Y of the yarn feeding package P and
guides the yarn Y to the yarn joining processing mechanism 64. The yarn hooking mechanism
61 captures the first yarn end Y1 of the first yarn feeding package PA and the second
yarn end Y2 of the second yarn feeding package PB and guides them to the yarn joining
processing mechanism 64 or captures the second yarn end Y2 of the first yarn feeding
package PA and the first yarn end Y1 of the second yarn feeding package PB and guides
them to the yarn joining processing mechanism 64. The yarn hooking mechanism 61 includes
a suction gun 611, and an arm portion 612.
[0079] The suction gun 611 sucks and captures the yarn Y. The suction gun 611 includes a
suction pipe 613 and a suction nozzle (suction holding portion) 614. The suction nozzle
614 is provided at the tip of the suction pipe 613. The suction nozzle 614 sucks the
yarn Y. A negative pressure source (not shown) is connected to the suction pipe 613.
Accordingly, a suction flow is generated in the suction nozzle 614. The base end side
of the suction pipe 613 is connected to the arm portion 612. The suction gun 611 moves
the yarn Y entangled (spliced) by the yarn splicing device 60 while sucking and holding
the yarn. The arm portion 612 moves the suction gun 611. The arm portion 612 moves
the suction gun 611. The arm portion 612 includes a link mechanism and a plurality
of motors. The arm portion 612 is supported by the bracket 616.
[0080] The first rotation mechanism 62 operates the first peg 25A to rotate the first yarn
supply package PA around the extension direction of the yarn supply package support
portion 251 as a rotation axis. The first rotation mechanism 62 rotates the first
yarn supply package PA to deliver the yarn Y from the first yarn supply package PA
when guiding the yarn Y to the yarn splicing mechanism 64 by the yarn hooking mechanism
61. The first rotation mechanism 62 winds the yarn Y on the first yarn supply package
PA by rotating the first yarn supply package PA in order to remove slack in the yarn
Y spliced by the yarn splicing mechanism 64 and held by the first clip 28 or the second
clip 29.
[0081] The first rotation mechanism 62 includes a first yarn joining processing driver 621,
a first motor 622, and a first arm portion 623. The first yarn joining processing
driver 621 is rotatably journaled to the first arm portion 623. The first yarn joining
processing driver 621 is provided with a first driven pulley 624. The first motor
622 is fixed to the first arm portion 623. The first drive pulley 625 is connected
to the output shaft of the first motor 622. The first motor 622 rotationally drives
the first drive pulley 625 about an axis. A first power transmission belt 626 is hung
on the first driven pulley 624 and the first drive pulley 625. Accordingly, the first
yarn joining processing driver 621 is rotated by the rotational driving of the first
motor 622.
[0082] The second rotation mechanism 63 operates the second peg 25B to rotate the second
yarn supply package PB around the extension direction of the yarn supply package support
portion 251 as a rotation axis. The second rotation mechanism 63 rotates the second
yarn supply package PB to deliver the yarn Y from the second yarn supply package PB
when guiding the yarn Y to the yarn splicing mechanism 64 by the yarn hooking mechanism
61. The second rotation mechanism 63 winds the yarn Y on the second yarn supply package
PB by rotating the second yarn supply package PB in order to remove slack in the yarn
Y spliced by the yarn splicing mechanism 64 and held by the first clip 28 or the second
clip 29.
[0083] The second rotation mechanism 63 includes a second yarn joining processing driver
631, a second motor 632, and a second arm portion 633. The second yarn joining processing
driver 631 is rotatably journaled to the second arm portion 633. The second yarn joining
processing driver 631 is provided with a second driven pulley 634. The second motor
632 is fixed to the second arm portion 633. A second drive pulley 635 is connected
to the output shaft of the second motor 632. The second motor 632 rotationally drives
the second drive pulley 635 about an axis. A second power transmission belt 636 is
hung on the second driven pulley 634 and the second drive pulley 635. Accordingly,
the second yarn joining processing driver 631 is rotated by the rotational driving
of the second motor 632.
[0084] The yarn joining processing mechanism 64 performs yarn joining processing. The yarn
joining processing mechanism 64 includes a splicer 66, a first guide mechanism 67,
and a second guide mechanism 68.
[0085] The splicer 66 includes a yarn joining processing portion 661, a pair of sandwiching
portions 662 and 663, a cutter 664 provided in the sandwiching portion 662, and a
cutter 665 provided in the sandwiching portion 663. The yarn joining processing portion
661 entangles (connects) the first yarn end Y1 of the first yarn feeding package PA
and the second yarn end Y2 of the second yarn feeding package PB or entangles (connects)
the second yarn end Y2 of the first yarn feeding package PA and the first yarn end
Y1 of the second yarn feeding package PB. The pair of sandwiching portions 662 and
663 is provided at positions sandwiching the yarn joining processing portion 661.
The pair of sandwiching portions 662 and 663 sandwich the yarn Y (the first yarn end
Y1 and the second yarn end Y2) inserted through a chamber of the yarn joining processing
portion 661. The cutters 664 and 665 cut, for example, an extra portion including
a portion sucked and held by the suction nozzle 614 from the yarn joining processed
portion of the yarn Y joined by the yarn joining processing portion 661.
[0086] The first guide mechanism 67 locks and guides the yarn Y. The first guide mechanism
67 is provided to be swingable. The first guide mechanism 67 is provided with a potentiometer
(not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls
the operation of the first motor 622 of the first rotation mechanism (a yarn supply
package rotation device) 62 on the basis of the detection result of the potentiometer.
That is, the yarn joining device 60 adjusts the rotation amount (feeding amount) of
the first yarn feeding package PA on the basis of the detection result of the potentiometer
and draws out the yarn Y from the first yarn feeding package PA at a predetermined
tension.
[0087] The second guide mechanism 68 locks and guides the yarn Y. The second guide mechanism
68 is provided to be swingable. The second guide mechanism 68 is provided with a potentiometer
(not shown) for detecting the tension of the yarn Y. The yarn joining device 60 controls
the operation of the second motor 632 of the second rotation mechanism (a yarn supply
package rotation device) 63 on the basis of the detection result of the potentiometer.
That is, the yarn joining device 60 adjusts the rotation amount (feeding amount) of
the second yarn feeding package PB on the basis of the detection result of the potentiometer
and draws out the yarn Y from the second yarn feeding package PB at a predetermined
tension.
[0088] As shown in FIG. 9, the rotary table 936 is rotatably supported by the base 931.
The rotary table 936 is rotated so that the yarn feeding bobbin support portion 933A
is located in front of the target peg 25 when the yarn feeding bobbin B is collected.
Further, the rotary table 936 is rotated so that the yarn feeding package supply unit
934A is located in front of the target peg 25 when the yarn feeding package P is supplied.
Further, the rotary table 936 is rotated to be located in front of the target peg
25 when joining the yarn Y by the yarn joining device 60.
[0089] As shown in FIG. 11, the control unit 94 is an electronic control unit including
a central processing unit (CPU), a read only memory (ROM), a random access memory
(RAM), an I/O port, a communication port, and the like. The ROM stores a program for
controlling each of the traveling unit 90, the elevating unit 91, the holding unit
92, and the exchange unit 93. Further, each function in the control unit 94 is executed
under the control of the CPU by loading predetermined computer software on the hardware
such as the CPU and the main storage unit. The control unit 94 of this embodiment
mainly controls the suction nozzle 614, the arm portion 612, the splicer 66, the first
rotation mechanism 62, and the second rotation mechanism 63 to perform the yarn splicing
process and the clip holding process.
[0090] The control unit 94 controls the arm portion 612, the suction nozzle 614, and the
splicer 66 to perform a yarn splicing operation of splicing the second yarn end Y2
and the first yarn end Y1 after setting the second yarn end Y2 of the first yarn supply
package PA and the first yarn end Y1 of the second yarn supply package PB to the splicer
66 when the yarn Y wound on the first yarn supply package PA is unwound. The control
unit 94 controls the arm portion 612 and the suction nozzle 614 to perform a yarn
hooking operation of holding a part of the yarn Y between the second yarn end Y2 of
the first yarn supply package PA and the inner edge of the first yarn supply package
PA or a part of the yarn Y between the first yarn end Y1 of the second yarn supply
package PB and the outer edge of the second yarn supply package PB to the clip 27
before performing such a yarn splicing operation. Additionally, whether the clip 27
holding the yarn Y is the first clip 28 or the second clip 29 will be described later.
[0091] The control unit 94 controls the arm portion 612, the suction nozzle 614, and the
splicer 66 to perform a yarn splicing operation of splicing the second yarn end Y2
and the first yarn end Y1 after setting the second yarn end Y2 of the second yarn
supply package PB and the first yarn end Y1 of the first yarn supply package PA to
the splicer 66 when the yarn Y wound on the second yarn supply package PB is unwound.
The control unit 94 controls the arm portion 612 and the suction nozzle 614 to perform
a yarn hooking operation of holding a part of the yarn Y between the second yarn end
Y2 of the second yarn supply package PB and the inner edge of the second yarn supply
package PB or a part of the yarn Y between the first yarn end Y1 of the first yarn
supply package PA and the outer edge of the first yarn supply package PA to the clip
27 before performing such a yarn splicing operation. Additionally, whether the clip
27 holding the yarn Y is the first clip 28 or the second clip 29 will be described
later.
[0092] Additionally, such a yarn hooking operation may be used to hold a part of the yarn
Y in which the second yarn end Y2 is connected to the first yarn end Y1 by the yarn
splicing operation to the clip 27 after the yarn splicing operation.
[0093] Next, a holding method (control method) of holding the yarn Y connected between the
first yarn supply package PA and the second yarn supply package PB to the first clip
28 or the second clip 29 in the creel stand 20 will be described. The holding method
(control method) of this embodiment has one feature that the clip 27 (the first clip
28 or the second clip 29) holding the yarn Y is determined (different) for each of
(1) a first scene to (4) a fourth scene in the configuration of the creel stand 20
in which the first peg 25A is disposed on the left side of the guide portion 26, the
second peg 25B is disposed on the right side of the guide portion 26, the first clip
28 is disposed on the upper side of the guide portion 26, and the second clip 29 is
disposed on the lower side of the guide portion 26 in the front view.
- (1) The first clip 28 holds the yarn Y connected between the first yarn supply package
PA and the second yarn supply package PB in the first scene in which the yarn Y of
the first yarn supply package PA is wound counterclockwise, the yarn Y of the second
yarn supply package PB is wound counterclockwise, and the yarn Y wound on the second
yarn supply package PB is unwound.
- (2) The first clip 28 holds the yarn Y connected between the first yarn supply package
PA and the second yarn supply package PB in the second scene in which the yarn Y of
the first yarn supply package PA is wound clockwise, the yarn Y of the second yarn
supply package PB is wound clockwise, and the yarn Y wound on the first yarn supply
package PA is unwound.
- (3) The second clip 29 holds the yarn Y connected between the first yarn supply package
PA and the second yarn supply package PB in the third scene in which the yarn Y of
the first yarn supply package PA is wound counterclockwise, the yarn Y of the second
yarn supply package PB is wound counterclockwise, and the yarn Y wound on the first
yarn supply package PA is unwound.
- (4) The second clip 29 holds the yarn Y connected between the first yarn supply package
PA and the second yarn supply package PB in the fourth scene in which the yarn Y of
the first yarn supply package PA is wound clockwise, the yarn Y of the second yarn
supply package PB is wound clockwise, and the yarn Y wound on the second yarn supply
package PB is unwound.
[0094] Hereinafter, a series of operations of the yarn splicing processing device 9A performing
a yarn splicing process and a clip holding process based on the holding method will
be described in detail with reference to FIGS. 10 to 15. Here, a case will be described
in which the yarn splicing device 60 splices the second yarn end Y2 of the first yarn
supply package PA supported by the first peg 25A and the first yarn end Y1 of the
second yarn supply package PB supported by the second peg 25B when the yarn Y is unwound
from the outer layer side of the first yarn supply package PA (third scene).
[0095] The control unit 94 drives the first motor 622 to rotate the first yarn splicing
driver 621 engaging with the first wheel 253D of the first peg 25A. When the first
yarn splicing driver 621 rotates, the first yarn supply package PA rotates around
the extension direction of the yarn supply package support portion 251 as a rotation
axis. The control unit 94 drives the second motor 632 to rotate the second yarn splicing
driver 631 engaging with the first wheel 253D of the second peg 25B. When the second
yarn splicing driver 631 rotates, the second yarn supply package PB rotates around
the extension direction of the yarn supply package support portion 251 as a rotation
axis. For example, the control unit 94 rotates the first yarn supply package PA and
the second yarn supply package PB to a predetermined position by controlling the first
motor 622 and the second motor 632 based on the detection result of a sensor (not
shown) detecting a detection object (not shown) provided in the adapter 8.
[0096] The control unit 94 activates the suction gun 611. Accordingly, the suction gun 611
can suck and hold the yarn Y in the suction nozzle 614. The control unit 94 controls
the arm portion 612 so that the second yarn end Y2 of the first yarn feeding package
PA is captured (held) to the suction nozzle 614. Next, the control unit 94 controls
the arm portion 612 so that the suction nozzle 614 is moved to the second clip 29
and the yarn Y of the first yarn feeding package PA is hooked (holed) to the second
clip 29 as shown in FIG. 13 (A). More specifically, the yarn Y of the first yarn feeding
package PA is locked by being sandwiched between the pair of dish plates 291 and 292
of the second clip 29.
[0097] Next, the control unit 94 controls the arm portion 612 while the yarn Y of the first
yarn feeding package PA is hooked to the second clip 29 and moves the suction nozzle
614 holding the second yarn end Y2 of the first yarn feeding package PA to the first
guide mechanism 67 to hook the yarn Y of the first yarn feeding package PA to the
first guide mechanism 67 as shown in FIG. 13(B). The control unit 94 adjusts the rotation
amount (feeding amount) of the first yarn feeding package PA on the basis of the detection
result of the potentiometer provided in the first guide mechanism 67 and draws out
the yarn Y from the first yarn feeding package PA at a predetermined tension. Further,
the control unit 94 controls the arm portion 612 while the yarn Y of the first yarn
feeding package PA is hooked to the first guide mechanism 67 and moves the suction
nozzle 614 to the yarn joining processing mechanism 64 so that the second yarn end
Y2 of the first yarn feeding package PA is set (guided) to the yarn joining processing
mechanism 64.
[0098] Next, the control unit 94 causes the suction nozzle 614 to catch (hold) the first
yarn end Y1 of the second yarn supply package PB. Next, the control unit 94 controls
the arm portion 612 so that the suction nozzle 614 holding the first yarn end Y1 of
the second yarn supply package PB is moved to the second guide mechanism 68 and the
yarn Y of the second yarn supply package PB is hooked on the second guide mechanism
68 as shown in FIG. 14A. Next, the control unit 94 controls the arm portion 612 so
that the suction nozzle 614 holding the first yarn end Y1 of the second yarn supply
package PB is moved to the yarn splicing mechanism 64 and the first yarn end Y1 of
the second yarn supply package PB is set (guided) to the yarn splicing mechanism 64.
[0099] Next, the control unit 94 controls the splicer 66 of the yarn joining device 60 so
that the second yarn end Y2 of the first yarn feeding package PA and the first yarn
end Y1 of the second yarn feeding package PB are joined (connected) as shown in FIG.
14(B). Further, the control unit 94 controls the cutters 664 and 665 of the yarn joining
device 60 so that, for example, an extra portion including a portion sucked and held
by the suction nozzle 614 is cut and removed from the yarn joining processed portion
of the second yarn end Y2 of the first yarn feeding package PA and the first yarn
end Y1 of the second yarn feeding package PB.
[0100] Next, the control unit 94 controls the exchanging unit 93 (yarn splicing device 60)
to move the yarn Y to the outside of the yarn splicing mechanism 64. Accordingly,
as shown in FIG. 15A, the spliced yarn Y is pulled out from the yarn splicing device
60. Next, the control unit 94 controls the second motor 632 so that the second yarn
splicing driver 631 is rotationally driven and the second yarn supply package PB is
rotated around the extension direction of the yarn supply package support portion
251 as a rotation axis as shown in FIG. 15B. Accordingly, the slack of the spliced
yarn Y hooked on the first clip 28 can be removed.
[0101] Additionally, in the first scene, although the procedure is different in that the
first yarn end Y1 of the first yarn supply package PA is guided to the yarn splicing
mechanism 64 while being hooked on the first clip 28, the second yarn end Y2 of the
second yarn supply package PB is guided to the yarn splicing mechanism 64, the first
yarn end Y1 and the second yarn end Y2 guided to the yarn splicing mechanism 64 are
spliced, and the first yarn supply package PA is rotated around the extension direction
of the yarn supply package support portion 251 as a rotation axis to remove the slack
of the yarn Y, various controls performed by the control unit 94 are the same as those
of the third scene. Therefore, detailed description is omitted.
[0102] Similarly, in the second scene, although the procedure is different in that the first
yarn end Y1 of the second yarn supply package PB is guided to the yarn splicing mechanism
64 while being hooked on the first clip 28, the second yarn end Y2 of the first yarn
supply package PA is guided to the yarn splicing mechanism 64, the first yarn end
Y1 and the second yarn end Y2 guided to the yarn splicing mechanism 64 are spliced,
and the second yarn supply package PB is rotated around the extension direction of
the yarn supply package support portion 251 as a rotation axis to remove the slack
of the yarn Y, various controls performed by the control unit 94 are the same those
of the third scene. Therefore, detailed description is omitted.
[0103] Similarly, in the fourth scene, although the procedure is different in that the first
yarn end Y1 of the first yarn supply package PA is guided to the yarn splicing mechanism
64 while being hooked on the second clip 29, the second yarn end Y2 of the second
yarn supply package PB is guided to the yarn splicing mechanism 64, the first yarn
end Y1 and the second yarn end Y2 guided to the yarn splicing mechanism 64 are spliced,
and the first yarn supply package PA is rotated around the extension direction of
the yarn supply package support portion 251 as a rotation axis to remove the slack
of the yarn Y, various controls performed by the control unit 94 are the same as those
of the third scene. Therefore, detailed description is omitted.
[0104] The operation and effect of the creel stand 20 of the embodiment will be described.
In the creel stand 20 of the embodiment, the first clip 28 and the second clip 29
are respectively arranged in an upper area A1 and a lower area A2 of an area divided
by the mounting portion line L1 as a boundary in the front view as shown in FIG. 6A.
Accordingly, since it is possible to select the first clip 28 and the second clip
29 holding the yarn Y between both yarn supply packages PA and PB according to the
position of the yarn Y pulled out from the (spare) yarn supply package P after switching,
it is possible to hold the yarn Y between both yarn supply packages PA and PB in an
appropriate state for each situation. As a result, it is possible to suppress problems
from occurring when the yarn supply packages PA and PB are unwound or switched.
[0105] In the creel stand 20 of the embodiment, the first clip 28 and the second clip 29
are respectively arranged in the upper area A1 and the lower area A2 of the area divided
by the mounting portion line L1 as a boundary in the front view and are arranged at
positions far from the outer edge of the first yarn supply package PA or the outer
edge of the second yarn supply package PB with respect to the mounting portion line
L1. Accordingly, since it is possible to select the clip 27 (the first clip 28 or
the second clip 29) holding the yarn Y between both yarn supply packages PA and PB
according to the position of the yarn Y pulled out from the (spare) yarn supply package
P after switching, it is possible to hold the yarn Y between both yarn supply packages
PA and PB in an appropriate state for each situation.
[0106] In the creel stand 20 of the embodiment, the first peg 25A and the second peg 25B
are arranged line-symmetrically with respect to the guide portion/holding portion
line L3 when the line passing through the guide portion 26, the first clip 28, and
the second clip 29 is virtually set as the guide portion/holding portion line L3 in
a plan view in which the first clip 28 and the second clip 29 overlap each other.
Accordingly, it is possible to align the holding states of the yarn Y pulled out from
the first yarn supply package PA and the yarn Y pulled out from the second yarn supply
package PB by the first clip 28 and the second clip 29.
[0107] In the creel stand 20 of the embodiment, the first peg 25A and the second peg 25B
are arranged line-symmetrically with respect to the guide portion/mounting portion
line L4 when the line passing through the guide portion 26, the first peg 25A, and
the second peg 25B is virtually set as the guide portion/mounting portion line L4
in a side view in which the first peg 25A and the second peg 25B overlap each other.
Accordingly, it is possible to align the holding states of the yarn Y pulled out from
the first yarn supply package PA and the yarn Y pulled out from the second yarn supply
package PB by the first clip 28 and the second clip 29.
[0108] The yarn supply device 100 of the above-described embodiment includes the first rotation
mechanism 62 and the second rotation mechanism 63 which remove the slack of the yarn
Y connected between the first yarn supply package PA and the second yarn supply package
PB by rotating at least one of the first yarn supply package PA mounted on the first
peg 25A and the second yarn supply package PB mounted on the second peg 25B around
the extension direction of the yarn supply package support portion 251 as a rotation
axis. Accordingly, it is possible to perform the process of connecting the yarn end
of the first yarn supply package PA and the yarn end of the second yarn supply package
PB and the yarn hooking process of holding a part of the yarn Y in which the yarn
supply packages PA and PB are connected to each other by the first clip 28 or the
second clip 29 without requiring the hand of the worker. Accordingly, it is possible
to reduce the burden of the worker who requires the yarn splicing process and the
yarn hooking process.
[0109] Although the embodiment of an aspect of the present invention has been described
above, an aspect of the present invention is not necessarily limited to the above-described
embodiment, and various changes can be made without departing from the gist thereof.
(First modified example)
[0110] In the above-described embodiment, although an example in which one first clip 28
and one second clip 29 are provided as the clip 27 has been described, the present
invention is not limited thereto. For example, as shown in FIG. 16, a first modified
example may have a configuration in which the first clip 28 includes a first clip
28A for a first peg (a first holding portion for a first mounting portion) disposed
at a position closer to the first peg 25A than the second peg 25B and a first clip
28B for a second peg (a first holding portion for a second mounting portion) disposed
at a position closer to the second peg 25B than the first peg 25A and the second clip
29 includes a second clip 29A for a first peg (a second holding portion for a first
mounting portion) disposed at a position closer to the first peg 25A than the second
peg 25B and a second clip 29B for a second peg (a second holding portion for a second
mounting portion) disposed at a position closer to the second peg 25B than the first
peg 25A.
[0111] The arrangement relationship of the first clip 28A for the first peg and the first
clip 28B for the second peg with respect to the second clip 29A for the first peg
and the second clip 29B for the second peg in the creel stand 20 of the first modified
example is the same as the arrangement relationship between the first clip 28 and
the second clip 29 of the above-described embodiment. That is, as shown in FIG. 16,
in the front view, the first clip 28A for the first peg and the first clip 28B for
the second peg corresponding to the first clip 28 of the above-described embodiment
and the second clip 29A for the first peg and the second clip 29B for the second peg
corresponding to the second clip 29 of the above-described embodiment are arranged
between the first peg 25A and the second peg 25B in the horizontal direction and are
arranged to sandwich both the first peg 25A and the second peg 25B in the vertical
direction. Further, in the front view, the first clip 28A for the first peg and the
first clip 28B for the second peg corresponding to the first clip 28 of the above-described
embodiment and the second clip 29A for the first peg and the second clip 29B for the
second peg corresponding to the second clip 29 of the above-described embodiment are
arranged to sandwich the fully wound first yarn supply package PA or the fully wound
second yarn supply package PB in the vertical direction.
[0112] More specifically, the first clip 28 (the first clip 28A for the first peg and the
first clip 28B for the second peg) in the configuration of the first modified example
is disposed in the upper area A1 divided by the mounting portion line L1 as a boundary
in the front view and the second clip 29 (the second clip 29A for the first peg and
the second clip 29B for the second peg) is disposed in the lower area A2 divided by
the mounting portion line L1 as a boundary.
[0113] In the creel stand 20 according to the first modified example, the yarn Y between
both yarn supply packages PA and PB can be held in a more appropriate state according
to the yarn Y pulled out from the first yarn supply package PA or the yarn Y pulled
out from the second yarn supply package PB. Accordingly, it is possible to more reliably
suppress problems from occurring when the yarn supply packages PA and PB are unwound
or switched.
[0114] Further, in the configuration (FIG. 16) according to the first modified example,
a slack adjustment mechanism 70 shown in FIG. 18A may be provided to remove the slack
of the yarn Y occurring between both yarn supply packages PA and PB when the first
clip 28 or the second clip 29 holds the yarn Y connected between the first yarn supply
package PA and the second yarn supply package PB instead of or in addition to the
configuration of the first rotation mechanism 62 and the second rotation mechanism
63 of the above-described embodiment. The slack adjustment mechanism 70 is provided
in the exchanging unit 93 (see FIG. 9) of the package exchanging device 9 (see FIG.
8). The slack adjustment mechanism 70 includes a hook portion 71 capable of hooking
the yarn Y. The slack adjustment mechanism 70 includes the first guide mechanism 67
and the second guide mechanism 68 of the yarn splicing device 60 of the above-described
embodiment.
[0115] Next, an operation of removing the slack of the yarn Y held by the second clip 29A
for the first peg and the second clip 29B for the second peg after the yarn splicing
device 60 splices the second yarn end Y2 of the first yarn supply package PA and the
first yarn end Y1 of the second yarn supply package PB will be described. In the first
modified example, the yarn Y connected between the first yarn supply package PA and
the second yarn supply package PB is held by the second clip 29A for the first peg
and the second clip 29B for the second peg as shown in FIG. 16 after the second yarn
end Y2 of the first yarn supply package PA and the first yarn end Y1 of the second
yarn supply package PB are spliced. Additionally, since the operation of the yarn
splicing processing device 9A for bringing the yarn Y connected between the first
yarn supply package PA and the second yarn supply package PB into the state shown
in FIG. 16 is the same except that the yarn Y is held by both the second clip 29A
for the first peg and the second clip 29B for the second peg, detailed description
is omitted.
[0116] As shown in FIG. 17A, the slack adjustment mechanism 70 hooks the hook portion 71
biased by a spring force in a white arrow direction shown in FIG. 17B for moving the
hook portion 71 to the portion of the yarn Y between the second clip 29A for the first
peg and the second clip 29B for the second peg after the second yarn end Y2 of the
first yarn supply package PA and the first yarn end Y1 of the second yarn supply package
PB are spliced. Next, the hook portion 71 is moved in a black arrow direction shown
in FIG. 18A so that the yarn Y is pulled to be wound on the second clip 29A for the
first peg and the yarn Y is pushed between the pair of disk plates 291 and 292 constituting
the second clip 29.
[0117] Additionally, a force Fs1 when the yarn Y is pushed into the pair of disk plates
291 and 292 is adjusted based on the detection result of the potentiometer provided
in the first guide mechanism 67 and the second guide mechanism 68. Specifically, when
the hook portion 71 is moved in the black arrow direction shown in FIG. 18A, the movement
of the hook portion 71 is stopped at a time point when the detection result of the
potentiometer is a force Fs3 larger than the force Fs1. After stopping the movement
of the hook portion 71, the hook portion 71 is moved in the direction opposite to
the movement direction before stopping and the hook portion 71 is released from the
yarn Y as indicated by the black arrow of FIG. 18B.
[0118] Accordingly, as shown in FIG. 19, the slack adjustment mechanism 70 can remove the
slack of at least one of the yarn Y between the second clip 29A for the first peg
and the first yarn supply package PA and the yarn Y between the second clip 29B for
the second peg and the second yarn supply package PB by adjusting the length of the
yarn Y between the second clip 29A for the first peg and the second clip 29B for the
second peg. FIG. 19 shows an example of removing the slack of both the yarn Y between
the second clip 29A for the first peg and the first yarn supply package PA and the
yarn Y between the second clip 29B for the second peg and the second yarn supply package
PB.
[0119] Although not shown in the drawings, the slack adjustment mechanism 70 may remove
the slack of at least one of the yarn Y between the first clip 28A for the first peg
and the first yarn supply package PA and the yarn Y between the first clip 28B for
the second peg and the second yarn supply package PB by adjusting the length of the
yarn Y between the first clip 28A for the first peg and the first clip 28B for the
second peg. Since the procedure in this case is also the same as the operation of
the slack adjustment mechanism 70 that adjusts the length of the yarn Y between the
second clip 29A for the first peg and the second clip 29B for the second peg, detailed
description is omitted.
[0120] Additionally, the force Fs1 of pushing the yarn Y into the pair of disk plates 291
and 292 is smaller than a force Fs2 which is a reference value for determining whether
or not the entanglement determination (yarn splicing determination) is successful,
the force Fs2 which is the reference value is smaller than a force Fs3 which is a
reference value for determining the timing of releasing the hook portion 71 (the timing
of moving the hook portion 71 in the opposite direction), and the force Fs3 which
is the reference value is smaller than a force Fs4 which is a reference for determining
that the yarn Y is damaged.
[0121] In the creel stand 20 according to the first modified example, it is possible to
perform the process of connecting the yarn end of the first yarn supply package PA
and the yarn end of the second yarn supply package PB to each other and the yarn hooking
process of holding a part of the yarn Y obtained by connecting the yarn supply packages
PA and PB to each other by the first clip 28A for the first peg and the first clip
28B for the second peg provided as the first clip 28 or holding a part of the yarn
Y obtained by connecting the yarn supply packages PA and PB to each other by the second
clip 29A for the first peg and the second clip 29B for the second peg provided as
the second clip 29 without requiring the hand of the worker. Accordingly, it is possible
to reduce the burden of the worker who requires the yarn splicing process and the
yarn hooking process.
(Other modified examples)
[0122] In the above-described embodiment and the above-described modified example, although
an example in which the yarn splicing processing device 9A connects the yarn end of
the first yarn supply package PA and the yarn end of the second yarn supply package
PB has been described, the present invention is not limited thereto. For example,
even when the creel stand 20 is provided in a site in which the yarn splicing process
is manually performed, the creel stand 20 can have the above-described operation and
effect.
[0123] In the above-described embodiment and the above-described modified example, although
an example in which the first peg 25A and the second peg 25B on which the first yarn
supply package PA and the second yarn supply package PB used for the splicing operation
are mounted are arranged adjacently in the horizontal direction has been described,
the present invention is not limited thereto. For example, the first peg 25A and the
second peg 25B may be arranged adjacently at different positions in the vertical direction.
REFERENCE SIGNS LIST
[0124] 1: false-twist texturing device, 2: yarn supply section, 3: processing section (yarn
texturing device), 9: package exchanging device, 9A: yarn splicing processing device,
20: creel stand (yarn supply stand), 25: peg, 25A: first peg (first mounting portion),
25B: second peg (second mounting portion), 26: guide portion, 27: clip, 28: first
clip, 28A: first clip for first peg (first holding portion for first mounting portion),
28B: first clip for second peg (first holding portion for second mounting portion),
29: second clip, 29A: second clip for first peg (second holding portion for first
mounting portion), 29B: second clip for second peg (second holding portion for second
mounting portion), 60: yarn splicing device, 62: first rotation mechanism (yarn supply
package rotation device), 63: second rotation mechanism (yarn supply package rotation
device), 70: slack adjustment mechanism, 71: hook portion, 90: traveling unit, 94:
control unit, 100: yarn supply device.