[0001] The present invention relates to a device for supporting the temple and associated
cover, in a loom with movable bench for the weaving of terry cloth.
[0002] As is well known to persons skilled in the art, in terry cloth looms the bench of
the loom is movable alternately in the forward direction of the fabric and in the
opposite direction, so as to allow the formation of terry cloth loops by the warp
yarns.
[0003] Equally well known, in terry cloth looms, is the function of the so-called "temples";
these consist of a pair of devices which are located on the sides of the fabric being
woven and each of which is formed by a cylinder rotating idle on a cylindrical shaft
perpendicular to the moving direction of the fabric and provided externally with a
plurality of idle rotating rings having needles which allow gripping of the fabric;
said idle rotating rings are mounted on said cylinder with an inclined axis of rotation
so as to cause widening of the fabric during their rotation. The cylindrical shaft
of the temple is mounted on a support fixed in turn to the loom in the manner described
below and a cover for the temple is fixed on the same support. Said cover surrounds
the temple by an amount sufficient to cause the fabric, which just passes between
the temple and the cover, to adhere to the body of the temple through a predetermined
winding angle depending on the degree of gripping required. The function of the temples
is in fact precisely that of keeping outstretched the newly formed fabric in the vicinity
of the zone where the weft is inserted.
[0004] In terry cloth looms with a movable bench, the temples support must be moved integrally
with the bench so as to assist the consequent movement of the fabric with which the
temples are constantly engaged. In looms of the known type, this is achieved by mounting
the abovementioned temple support on a slide sliding in a direction parallel to the
warp yarns, said slide being actuated by a connecting rod connected to the movable
bench.
[0005] Fig. 1 illustrates in schematic form a loom of the type mentioned above, in which
it is possible to see the various component parts of the loom in the zone of the movable
bench, as described previously. In particular, it shows the temple 1 and the associated
cover 2, which are both fixed to a common support 3. The support 3 is rigidly connected
to a slide 4 sliding longitudinally with respect to the body G of the loom, parallel
to the warp yarns, said slide 4 being connected by a connecting rod 5 to the movable
bench 6 pivotably mounted on the body G of the loom.
[0006] When looms of this type must be equipped with a selvedge device arranged on the lateral
edges of the fabric, namely when it is required to form an inset selvedge in the terry
cloth, the problem arises that it is not possible to install the temples 1 in the
most appropriate position, since this position is already occupied by the selvedge
device. In particular, the temple support 3, which extends also in the zone located
above the fabric T being formed in order to support the cover 2, is really bulky and
then interferes in this zone with the selvedge device elements which perform reinsertion
of the weft ends inside the fabric being formed.
[0007] A generic selvedge device 7 in fact consists of an actuating unit 7a, which is fixed
to the body G of the loom, and an external unit 7b which comprises the needle, the
cutting blade and the gripper which are intended, respectively, to take up the weft
yarn, cut it to size and reinsert it inside the fabric. The external unit 7b, however,
must be installed precisely in the same position which is normally occupied by the
temple 1 and therefore would interfere mechanically therewith, as indicated schematically
in Figures 1 and 2 where this unit is shown in broken lines, since the temple support
3 necessarily also extends above the fabric T.
[0008] The object of the present invention is therefore that of providing a novel support
device for the temple and associated cover which is devoid of the drawbacks mentioned
above and which therefore allows the installation, on the loom, of a selvedge device
without causing mechanical interference between these two devices and without the
temple having to be moved into a position further downstream, in the forward direction
of the fabric, this position being less suitable for proper execution of its function.
[0009] A further object of the present invention is also that of ensuring that a correct
winding of the fabric onto the temples is maintained during movements of the bench.
[0010] These objects are achieved, according to the present invention, by means of a device
for supporting the temple and associated cover, in a terry cloth loom with movable
bench equipped with a selvedge device, of the type in which the support for said temple
is mounted on a slide movable longitudinally in a direction parallel to the warp yarns
and connected mechanically to the movable bench by means of a connecting rod, characterized
in that the cover of said temple is supported, independently of the temple support,
by means of a pair of articulated rods, the first of said rods being connected to
a part of the loom arranged above the cover and the second of said rods being connected
to a second support integral with said slide and arranged downstream of the temple
with respect to the forward direction of the fabric.
[0011] Further characteristic features and advantages of the present invention will emerge,
however, more clearly from the following detailed description of a preferred embodiment,
schematically illustrated in the accompanying drawings, in which:
[0012] Fig. 1 is a schematic side-elevation view of the device for supporting the temple
in a terry cloth loom, of the type used in the prior art;
[0013] Fig. 2 is a front, partial, schematic view of the device according to Fig. 1 which
shows the relative position of the temple support and the selvedge device;
[0014] Fig. 3 is a schematic side elevation view of the device for supporting a temple in
a terry cloth loom, according to the present invention, with the bench in the normal
position (1); and
[0015] Fig. 4 is a view - similar to that of Figure 3 - showing the loom with the bench
pivoted into the displaced position (2).
[0016] Figs. 1 and 2, as already mentioned above in the introductory part of the present
description, illustrate a known arrangement of the device for supporting the temple
and associated cover, in a terry cloth loom. It has also already been described how,
in a loom of this type, it is not possible to install a selvedge device, for performing
an inset selvedge using the cut weft ends, without having to move the temple into
a less advantageous position.
[0017] In fact, in order for these devices to operate efficiently, it is necessary for both
of them to be positioned in the immediate vicinity of the fabric edge, at the weft
insertion zone. The selvedge device must in fact operate precisely in that zone, in
order to perform cutting of the last weft inserted and reinsertion into the shed;
the temple also, however, must be positioned in the same zone, namely where the fabric
is initially formed, so as to avoid lateral curling of the fabric in the extremely
delicate weft insertion zone. Fig. 2 just illustrates in schematic form the mechanical
interference which would occur between the selvedge device 7, and in particular the
external unit 7b thereof, and the support 3 for the temple 1 and associated cover
2.
[0018] According to the present invention, this problem may be solved by designing in a
mutually independent manner the support for the temple 1 and the one for the associated
cover 2. It should be pointed out in fact that the selvedge device 7, and more precisely
its external unit 7b, is mounted on the loom in a zone completely above the fabric
T being formed. The problem identified in the looms of the prior art, as discussed
above, therefore effectively arises only in respect of the part of the support 3 which
supports the cover 2 and which therefore extends above the fabric T and not in respect
of the part of the support 3 which supports the temple 1.
[0019] On the basis of this first ingenious intuition, the inventors of the present invention
have therefore thought to design the support of the temple 1 in a manner completely
separate from that of the associated cover 2 and moreover to position this latter
support into a zone of the loom where it would not interfere with the selvedge device,
thus overcoming the drawbacks present in the known devices, as will become perfectly
clear from the following detailed description of a preferred embodiment of the device.
[0020] With reference in fact now to Fig. 3, which shows the device provided in accordance
with the present invention, it is possible to note that the support for the temple
1, the dimensions of which have been suitably reduced, extends completely underneath
the fabric T and the said temple 1 and therefore is no longer able to interfere at
all with the external selvedge unit 7b (not shown for the sake of clarity of the drawing,
in Figs. 3 and 4) which, as already mentioned, is instead arranged entirely above
the fabric itself. The cover 2 of the temple 1 is instead kept in its correct position,
in accordance with an essential feature of the present invention, by means of a pair
of articulated rods and in particular a first rod 8 extending approximately vertically
and a second rod 9 extending approximately horizontally.
[0021] The rod 8 is pivotably mounted at one of its ends on the top part of the cover 2,
while at the other end it is pivotably mounted on a support 10 fixed to the driving
unit 7a of the selvedge device 7; the rod 8 therefore determines the height of the
cover 2 with respect to the temple 1. The rod 9 on the other hand is rigidly fixed
at one of its ends to a side zone of the cover 2, while at the other end it is connected,
by means of an elastic joint 11, to a pin 12 projecting from a support 13 in turn
integral with the said slide 4 to which the support 3 for the temple 1 is fixed. The
elastic joint 11 is such as to allow the rod 9, at least within the limits of the
relatively small movements thereof, two degrees of freedom, i.e. rotation about the
joint 11 and sliding along the axis of the pin 12.
[0022] As it should be obvious from an examination of Figs. 3 and 4, the support 13 of the
pin 12 comprises a main portion integral with the slide 4, arranged entirely underneath
the fabric, and a substantially separate portion 13a - to which the pin 12 is fixed
- arranged entirely above the fabric. The portion 13a is joined to the main portion
of the support 13 by means of a thin wall arranged laterally with respect to the fabric
and in the immediate vicinity thereof. Moreover, the longitudinal position of the
support 13 is set decidedly further back with respect to the position of the temple
1, such that it is possible to install also a selvedge device 7 on the loom, without
the problems of interference of the movable parts 7b of the selvedge device with the
temple or the cover 2 or their supports and without the need for moving the temple
1 from its most advantageous position.
[0023] During the movement of the bench 6 for formation of the terry cloth loops, the bench
passes from the angular position A1 shown in Fig. 3 into the position A2 shown in
Fig. 4 and therefore the rod 8 undergoes a small rotation about the point where it
is pivoted on the support 10. Since this oscillating movement nevertheless has a very
limited amplitude, it does not cause significant variations in the height of the cover
2 with respect to the temple 1 and positioning of the parts is designed so that in
the position of maximum angular rotation of the rod 8, with respect to its bottom
dead centre - and therefore of maximum height of the cover 2 with respect to the temple
1 - the angle of winding of the fabric T onto the temple 1 is nevertheless sufficiently
large.
[0024] On the other hand, the particular connection, i.e. comprising two degrees of freedom,
of the cover 2 to the support 13, by means of the rod 9, allows the cover 2 to perform
relatively small oscillations about the point where it is pivotably hinged with the
rod 8, in response to the global forces transmitted to its end edges by the fabric
T. This therefore allows these forces to be automatically balanced, producing a continuous
automatic repositioning of the cover 2 with a substantially constant orientation relative
to the fabric T, as can be clearly seen in the drawings (Figs. 3 and 4) from the fact
that the angle between the axis of the cover 2 and a vertical reference line practically
does not vary in the two limit positions of movement of the bench (B1/B2). This therefore
ensures that a constant correct winding of the fabric T on the temple is maintained
during all the alternating movements of the bench, as it is necessary for the formation
of the terry cloth.
[0025] From the above description it is clear how the invention has fully achieved the predefined
objects since it allows the installation, in the correct position on the loom, both
of the selvedge device and of the temple, so they are both in their right position
of maximum efficiency. Moreover, owing to the particular method of supporting the
temple cover, it is ensured that correct winding of the fabric onto the temple during
the movements of the bench is constantly maintained.
[0026] The invention has been described with reference to a preferred embodiment thereof
provided merely by way of example, but it is obvious that the scope of the invention
is not limited to this embodiment, but extends to all the possible variants thereof
within the competence of a person skilled in the art, provided that it falls within
the definitions given in the accompanying claims.
1. Device for supporting the temple and associated cover in a terry cloth loom with movable
bench equipped with a selvedge device, of the type in which the support for said temple
is mounted on a slide movable longitudinally in a direction parallel to the warp yarns
and connected mechanically to the movable bench by means of a connecting rod, characterized in that the cover of said temple is supported, independently of the temple support, by means
of a pair of articulated rods, the first of said rods being connected to a part of
the loom arranged above the cover and the second of said rods being connected to a
second support integral with said slide and arranged downstream of the temple with
respect to the forward direction of the fabric.
2. Support device as claimed in Claim 1), in which said first rod extends approximately
vertically and is pivotably mounted, at one of its ends, on the top of the cover and,
at the other end, on said loom part arranged above the cover.
3. Support device as claimed in Claim 2), in which said loom part arranged above the
cover is a third support fixed to said selvedge device.
4. Device as claimed in Claim 1, in which said second support comprises a first main
portion fixed to said slide and arranged entirely underneath the fabric and a substantially
separate second portion which is arranged entirely above the fabric and to which said
second rod is connected, said first and second portion being joined together by a
thin plate arranged laterally with respect to the fabric and in the immediate vicinity
thereof.
5. Device as claimed in Claim 4), in which said second rod extends approximately horizontally
and is rigidly fixed at one of its ends to the cover in a lateral position and fastened
at the other end to said second support by means of an elastic joint having two degrees
of freedom.
6. Device as claimed in Claim 5), in which said joint is formed between said rod and
a pin projecting from the second portion of said second support, arranged entirely
above the fabric.
1. Vorrichtung zum Unterstützen eines Breithalters und die dazugehörige Abdeckung in
einer Webmaschine für Frottiergewebe mit einer beweglichen Bank, die mit einer Webkanteneinrichtung
versehen ist, von der Art, bei dem die Unterstützung für den Breithalter auf einem
Schlitten montiert ist, der längs in einer Richtung parallel zu den Kettfäden beweglich
ist und mit der beweglichen Bank mechanisch mittels einer Verbindungsstange verbunden
ist, dadurch gekennzeichnet, dass die Abdeckung des Breithalters unabhängig von der Breithalterunterstützung mittels
eines Paares von angelenkten Stangen getragen wird, wobei die erste der Stangen mit
einem Teil der Webmaschine verbunden ist, das oberhalb der Abdeckung angeordnet ist,
und die zweite der Stangen mit einer zweiten Unterstützung verbunden ist, die mit
dem Schlitten einstückig ist und stromabwärts des Breithalters bezüglich der nach
vorne gerichteten Richtung des Gewebes angeordnet ist.
2. Unterstützungsvorrichtung nach Anspruch 1, wobei die erste Stange sich annähernd vertikal
erstreckt und an einem ihrer Enden schwenkbar an der Oberseite der Abdeckung montiert
ist und an dem anderen Ende an dem Webmaschinenteil, das oberhalb der Abdeckung angeordnet
ist, montiert ist.
3. Unterstützungsvorrichtung nach Anspruch 2, wobei der Webmaschinenteil, der oberhalb
der Abdeckung montiert ist, eine dritte Unterstützung ist, die an der Webkanteneinrichtung
befestigt ist.
4. Vorrichtung nach Anspruch 1, wobei die zweite Unterstützung einen ersten Hauptteil,
der an dem Schlitten befestigt ist und vollständig unterhalb des Gewebes angeordnet
ist und einen im wesentlichen separaten zweiten Abschnitt, der vollständig oberhalb
des Tuchs angeordnet ist und mit dem die zweite Stange verbunden ist, aufweist, wobei
der erste und der zweite Teil miteinander durch eine dünne Platte verbunden ist, die
lateral in Bezug auf das Tuch und in dessen unmittelbarer Nähe angeordnet ist.
5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die zweite Stange sich annähernd horizontal erstreckt und fest an einem seiner Enden
mit der Abdeckung in eine lateralen Position befestigt und an dem anderen Ende mit
der zweiten Unterstützung mittels der elastischen Verbindung, die zwei Freiheitsgrade
hat, befestigt ist.
6. Vorrichtung nach Anspruch 5, wobei die Verbindung zwischen der Stange und einem Stift,
der von dem zweiten Abschnitt der zweiten Unterstützung, die vollständig oberhalb
des Tuchs angeordnet ist, vorragt, gebildet ist.
1. Dispositif pour supporter le templet et un élément de recouvrement associé dans un
métier à tisser les tissus éponge doté d'un banc mobile équipé d'un dispositif de
formation de lisière, du type dans lequel le support dudit templet est monté sur un
coulisseau mobile longitudinalement dans une direction parallèle aux fils de chaîne
et est lié mécaniquement au banc mobile au moyen d'une tige de liaison, caractérisé en ce que l'élément de recouvrement dudit templet est supporté, indépendamment dudit support
de templet, au moyen d'une paire de tiges articulées, la première desdites tiges étant
liée à une partie du métier agencée au-dessus de l'élément de recouvrement, et la
seconde desdites tiges étant liée à un second support d'un seul tenant avec ledit
coulisseau et agencée en aval dudit templet par rapport au sens d'avance du tissu.
2. Dispositif de support selon la revendication 1, dans lequel ladite première tige s'étend
sensiblement verticalement et est montée de manière pivotante, au niveau de l'une
de ses extrémités, sur la partie supérieure de l'élément de recouvrement et, au niveau
de l'autre extrémité, sur ladite partie de métier agencée au-dessus de l'élément de
recouvrement.
3. Dispositif de support selon la revendication 2, dans lequel ladite partie de métier
agencée au-dessus de l'élément de recouvrement est un troisième support fixé audit
dispositif de formation de lisière.
4. Dispositif selon la revendication 1, dans lequel ledit second support comprend une
première partie principale fixée audit coulisseau et agencée complètement au-dessous
du tissu, et une seconde partie sensiblement distincte qui est agencée complètement
au-dessus du tissu et à laquelle ladite seconde tige est liée, ladite première partie
et ladite seconde partie étant liées l'une à l'autre par une plaque mince agencée
latéralement par rapport au tissu et à proximité immédiate de celui-ci.
5. Dispositif selon la revendication 4, dans lequel ladite seconde tige s'étend sensiblement
horizontalement et est rigidement fixée, au niveau de l'une de ses extrémités, à l'élément
de recouvrement dans une position latérale, et est fixée, au niveau de l'autre extrémité,
audit second support au moyen d'une liaison élastique ayant deux degrés de liberté.
6. Dispositif selon la revendication 5, dans lequel ladite liaison est formée entre ladite
tige et une broche en saillie de ladite seconde partie dudit second support, agencées
complètement au-dessus du tissu.