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EP 0 719 705 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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30.09.1998 Bulletin 1998/40 |
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Date of filing: 27.12.1995 |
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International Patent Classification (IPC)6: B65B 25/14 |
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A method for enveloping an object in an envelope comprising a sheet as well as a device
suitable for carrying out such a method
Verfahren und Vorrichtung zum Einwickeln eines Gegenstands in einem Wickel aus Bogenmaterial
Procédé pour envelopper un objet dans un enveloppe sous forme de feuille et dispositif
pour la mise en oeuvre du procédé
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Designated Contracting States: |
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AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
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Priority: |
30.12.1994 NL 9402240
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Date of publication of application: |
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03.07.1996 Bulletin 1996/27 |
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Proprietor: Oosterbosch, W.C.A. |
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5503 LL Veldhoven (NL) |
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Inventor: |
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- Oosterbosch, W.C.A.
5503 LL Veldhoven (NL)
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Representative: Veldman-Dijkers, Cornelia G.C., Ir. et al |
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Algemeen Octrooibureau
Dr. Nolenslaan 157 6136 GM Sittard 6136 GM Sittard (NL) |
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References cited: :
EP-A- 0 171 753
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NL-A- 7 203 107
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The invention relates to a method for enveloping, at least partially so, an object
in an envelope comprising a sheet, whereby the object to be enveloped is transported
in a direction of transport to a sheet extending transversely to the direction of
transport, after which the sheet is carried along by the moving object and folded
round the object about a folding line extending transversely to the direction of transport,
whereby a first end part of the sheet extends beyond a rear part, seen in the direction
of transport, of the object, after which said first end part is folded round said
rear part of the object and is attached to a second end part of the sheet folded round
the object.
[0002] The invention also relates to a device suitable for carrying out such a method.
[0003] A method and a device of this kind are known from Dutch Patent Application NL-A-9300006
and are suitable for enveloping a magazine in a paper sheet, for example, which sheet
envelopes said magazine either partially, in the form of a wrapper, or completely,
in the form of an envelope.
[0004] According to the known method said first end part is folded round the rear part of
the object in a manner not shown, after which said first end part is attached to the
second end part by means of an adhesive.
[0005] The object of the invention is to provide a method by which said first end part is
moved into contact with said second end part and attached thereto in a simple and
efficient manner.
[0006] With the method according to the invention this objective is accomplished in that,
after the sheet has been folded round the object, the sheet-enveloped object is moved
in the direction of transport by means of first and second rollers, which are rotatable
in opposite directions and which are positioned in opposed parallel relationship,
and is then deflected in a first direction of deflection, which is determined by a
deflecting platform and which includes an acute angle with the direction of transport
and extends transversely to the folding line, to a predetermined stop position on
said deflecting platform, and that the enveloped object is then moved in a direction
opposite said first direction of deflection, after which the enveloped object is deflected
in a second direction of deflection extending transversely to the folding line by
means of said first roller and a third roller, which are positioned in abutting parallel
relationship and which are rotatable in opposite directions, whereby the first end
part of the sheet is folded round the rear part of the object, seen in the direction
of transport, and round the front part of the object, seen in the second direction
of deflection.
[0007] With the method according to the invention the object is turned around while being
deflected, that is, the rear part, seen in the direction of transport, becomes the
front part, seen in the second direction of deflection, whereby the first end part
is brought into abutment with the second end part during said turning around. Thus
the objective set is accomplished in a simple manner.
[0008] The entire transport of the sheet-enveloped object is carried out by means of only
three rollers and a single deflecting platform. This minimizes the risk of failures.
[0009] It is noted that from Dutch Patent Application NL-A-7203107 a method is known wherein
a sheet is folded around an object in a manner which is not described in detail, after
which the sheet-enveloped object is transported between two rollers and is then deflected
by means of a surface curved to form a part of a cylinder, which surface is capable
of pivoting movement about a pivot pin, and is then deflected in a second direction
of deflection by means of said pivotable curved surface. The object is thereby prevented
from returning to the rollers by fingers secured to a tiltable beam. Then the sheet-enveloped
object is transported along between a third roller and said curved surface. The pivotable
curved surface and the tiltable beam make this known method relatively sensitive to
failure. Furthermore this method requires a precise synchronisation between the position
of the object and the angle through which the curved surface is pivoted. Also this
makes the method relatively sensitive to failure.
[0010] One embodiment of the method according to the invention is characterized in that
the enveloped object is deflected in a direction away from the first end part when
the deflection in the first direction of deflection takes place, after which the enveloped
object is deflected in a direction towards said first end part when the deflection
in the second direction of deflection takes place.
[0011] When the deflection in the first direction of deflection takes place the first end
part of the sheet is already partially folded round the rear part of the object, after
which the first end part is completely folded round the object and brought into abutment
with the second end part when the deflection in the second direction of deflection
takes place.
[0012] Preferably the end parts and/or the side edge of the sheet are attached together
by means of an adhesive, for example a glue.
[0013] Another preferred embodiment of the invention is characterized in that an address
is provided on the envelope comprising said sheet by means of a printing device after
the object with the sheet folded therearound has been deflected in the second direction
of deflection.
[0014] In this manner the enveloped object is immediately ready for shipment. This is desirable
in particular in connection with the enveloping and sending of periodicals.
[0015] Another object of the invention is to provide a device for carrying out said method.
[0016] This objective is accomplished with the device according to the invention in that
said device is provided with a first, a second and a third rotatable conveyor roller
and also with a deflecting platform provided with a stop, whereby an object with a
sheet folded therearound can be moved in a direction of transport and then in a first
direction of deflection determined by said deflecting platform up to said stop by
means of said first and said second conveyor roller, which are positioned in opposed
parallel relationship and which are rotatable in opposite directions during operation,
and whereby said object with the sheet folded therearound, which abuts against said
stop on said deflecting platform, can be moved in a second direction of deflection
by means of said first and said third conveyor roller, which are positioned in opposed
parallel relationship and which are rotatable in opposite directions during operation.
[0017] The invention will be explained in more detail hereafter with reference to the drawing,
in which:
Figure 1 is a diagrammatic front view of a device according to the invention;
Figure 2 is a plan view of the device shown in Figure 1;
Figures 3A - 3F are front views of a part of the device shown in Figure 1, showing
various steps of the enveloping of an object with a sheet.
[0018] In the Figures like parts are numbered alike.
[0019] Figures 1 and 2 are a front view and a plan view respectively of a device 1 according
to the invention, which is provided with an object supplying part 2, a sheet supplying
part 3, an enveloping part 4 and a printing and discharging part 5.
[0020] The object supplying part 2 comprises three at least substantially horizontally extending
rollers 7, 9, 11, which are driven so as to rotate counter-clockwise by a motor (not
shown). Endless belts 13 are passed over the rollers 9 and 11, said belts extending
substantially parallel to a direction of transport indicated by arrow T. Endless belts
15 are passed over the rollers 7 and 9, said belts including and angle α with the
direction of transport T. The object supplying part 2 is furthermore provided with
a strip 17 extending parallel to the direction of transport T and being positioned
between rollers 7 and 9, said strip forming a stop for an object to be enveloped,
which is being transported in the direction of the strip 17 by means of the obliquely
disposed belts 15. The strip 17 brings one side of the object to be enveloped into
alignment with the direction of transport T.
[0021] The sheet supplying part 3 comprises a magazine 19 for sheets, a vacuum roller 21
and a deflecting device 23, which is provided with endless flat belts 25, which are
passed over a number of horizontally extending rollers 27, 28. A deflecting plate
29 (see Figure 3A) is positioned opposite the rollers 28 being arranged so as to form
a circle. The sheet supplying part 3 furthermore comprises a plurality of guides 31
for guiding a sheet into a vertical position. It will be apparent that the space through
which the sheet moves downward towards the position shown in Figure 3B must thereby
be such that the sheet will remain in a substantially vertical position and cannot
collapse and form a number of wrinkles thereby. A stop 33 is provided under the guides
31, which stop can be vertically adjusted to the length of the sheet to be processed.
[0022] The folding part 4 comprises two parallel conveyor rollers 35, 37, one being disposed
above the other, which are driven in opposite directions by a motor (not shown) and
by means of which a object is conveyed in the direction of transport T during operation
from the moment the object has passed the roller 7. The folding part 4 furthermore
comprises a first, a second and a third rotatable conveyor roller 39, 41, 43 and a
deflecting platform 45, which will be explained in more detail hereafter with reference
to Figures 3A - 3F.
[0023] The printing and discharging part 5 comprises two conveyors 47, 49, which are each
provided with endless conveyor belts 51, which are passed over rollers 53, whereby
said rollers 53 can be rotated anti-clockwise by means of a motor (not shown).
[0024] One part of the conveyor 47 can be pivoted in the direction according to arrow P2
by means of an air cylinder 55 in order to discharge a rejected object. The conveyor
49 is provided with a printer 57, by means of which an address can be placed on the
enveloped object. The various parts 2, 3, 4, 5 of the device 1 are mounted on a frame
59.
[0025] The operation of the device and a detailed description of the folding part 4 will
now be described in more detail with reference to Figures 3A - 3F, which show various
steps of the enveloping of an object with a sheet.
[0026] The roller 21 is provided with a plurality of openings 63, which are connected, via
a channel 65 extending parallel to the central axis of the roller 21, to a vacuum
source (not shown). The roller 21 is positioned under a plate 67, in which a recess
69 (see Figure 2) is provided, through which the roller 21 partially extends. A sub-atmospheric
pressure is generated in the openings 63, after which the roller 21 is rotated in
the direction indicated by the arrow P1, whereby the lowermost sheet 61 of a stack
present in the magazine 19 is carried along and transported in the direction of the
arrow P3. The transport of a sheet 61 is detected by means of a photocell 71, which
is located behind the roller 21, seen in the direction of the arrow P3, whereupon
glueing units 73 are actuated by means of a control unit (not shown), which glueing
units apply strips of adhesive on a rear part of the side edges of the sheet 61 extending
parallel to the arrow P3. The sheet 61 is then transported along by means of the flat
belts 25 driven by the roller 27 rotating counter-clockwise, and deflected between
the rollers 28 and the deflecting plate 29 and between the guides 31 in the direction
of the stop 33 (see Figure 3A), until the sheet 61 is supported on the stop 33 (see
Figure 3B). The sheet 61 is laterally aligned in the magazine 19 by means of adjustable
sides of the magazine 19. During transport the sheet 61 is accurately aligned in lateral
direction again by two adjustable stops. At the moment when the sheet 61 is supported
on the stop 61, the strips of adhesive are located above the level of the object to
be enveloped. The object 75 to be wrapped, for example a magazine or a book, is placed
on the belts 13 and transported in the direction of transport T by means of the belts
13. Then the object 75 is transported along by the belts 15, whereby the oblique position
of the belts 15 causes one side of the object 75 to be aligned with the strip 17.
The transport of the object 75 is taken over by the conveyor rollers 35, 37 (see Figure
3B), which press the object 75 against the sheet 61, which is in a vertical position
by now. The sheet 61 is carried along by the object 75 and folded round the object
(see Figures 3C - 3D) about a folding line 77 extending transversely to the direction
of transport T (and transversely to the plane of the drawing of Figures 3B, 3C). Then
the object 75 and the sheet 61 folded therearound is guided between the rollers 39
and 41 and transported along in the conveyor T until the front part 75' of the object
75 strikes the deflecting platform 45. The object 75 with the sheet 61 folded therearound
is deflected by the deflecting platform 45 in the first direction of deflection indicated
by the arrow P4 until the object abuts against an adjustable stop 79 of the deflecting
platform 45 (see Figure 3D). Then glueing units 83 are actuated by means of the control
unit (not shown), which glueing units apply a line comprising a plurality of dots
of glue on the sheet 61, parallel to the folding line 77. A first end part 61' of
the sheet 61 extends beyond the rear part 75'' of the object 75, and is still positioned
on the roller 39 in the position of object 75 illustrated in Figure 3D. From this
position the object 75 with the sheet 61 folded therearound is moved in a direction
opposed to the direction indicated by the arrow P4. This may for example be effected
by springing lips (not shown) provided in the stop 77, by means of which the object
75 is shot back to the roller 39, as it were. The object 75 with the sheet 61 is carried
along by the rollers 39, 43 and deflected in a second direction of deflection indicated
by an arrow P5, whereby the first end part 61' is folded round the object 75 into
contact with the second end part 61'' of the sheet 61, and is connected to said second
end part 61'' by the dots of glue applied to the second end part 61'' (see Figure
3E). The object 75 with the sheet 61 around the object is moved to a horizontal position
(see Figure 3F) by means of conveyor 47. If a fault is detected by the photocells
and other sensors (not shown), the air cylinder 55 is actuated by means of the control
unit, as a result of which the left-hand part (Figure 3F) of the conveyor 47 is tilted
in the direction of the arrow P2, whereupon the "faulty" object is discharged. When
no faults are detected, the enveloped object is taken over by the conveyor 49 and
supplied to the printer 57. A printer 57 will then provide an address on the envelope
formed by the sheet. Prior to or after the object 75 is supplied to the printer 57
side edges of the sheet 61 are pressed together by means of wheels or in another manner
known per se, whereby the side edges are interconnected by means of the strips of
adhesive applied by the glueing units 73.
[0027] The stop 33 is provided with a photocell 85 (see Figure 1), which detects whether
or not a sheet is present. The moment the photocell 85 detects that the sheet has
been removed from the stop 33 the control unit will activate the vacuum roller 21,
as a result of which a new sheet 61 is supplied from the magazine 19.
[0028] The speed at which the respective rollers rotate is infinitely controllable by means
of the control unit.
[0029] The method and the device according to the invention also make it possible to provide
an envelope with surrounds the object in the form of a band, whereby the side edges
of the object remain uncovered. When a band is provided round an object the glueing
units 73 are made inoperative by means of the control unit. Thus the device shown
in the Figure is both suitable for providing a band and for providing an envelope-forming
cover around an object to be wrapped.
1. A method for enveloping, at least partially so, an object (75) in an envelope comprising
a sheet (61), whereby the object (75) to be enveloped is transported in a direction
of transport (T) to a sheet (61) extending transversely to the direction of transport
(T), after which the sheet (61) is carried along by the moving object (75) and folded
round the object (75) about a folding line (77) extending transversely to the direction
of transport (T), whereby a first end part (61') of the sheet (61) extends beyond
a rear part (75''), seen in the direction of transport (T), of the object (75), after
which said first end part (61') is folded round said rear part (75'') of the object
(75) and is attached to a second end part (61'') of the sheet (61) folded round the
object (75), characterized in that, after the sheet (61) has been folded round the
object (75), the sheet-enveloped object (75) is moved in the direction of transport
(T) by means of first (39) and second (41) rollers, which are rotatable in opposite
directions and which are positioned in opposed parallel relationship, and is then
deflected in a first direction (P4) of deflection, which is determined by a deflecting
platform (45) and which includes an acute angle with the direction of transport (T)
and extends transversely to the folding line (77), to a predetermined stop position
(79) on said deflecting platform (45), and that the enveloped object (75) is then
moved in a direction opposite said first direction (P4) of deflection, after which
the enveloped object (75) is deflected in a second direction (P5) of deflection extending
transversely to the folding line (77) by means of said first roller (39) and a third
roller (43), which are positioned in abutting parallel relationship and which are
rotatable in opposite directions, whereby the first end part (61') of the sheet (61)
is folded round the rear part (75'') of the object (75), seen in the direction of
transport (T), and round the front part (75' of the object (75), seen in the second
direction (P5) of deflection.
2. A method according to claim 1, characterized in that the enveloped object (75) is
deflected in a direction away from the first end part (61') when the deflection in
the first direction (P4) of deflection takes place, after which the enveloped object
(75) is deflected in a direction towards said first end part (61') when the deflection
in the second direction (P5) of deflection takes place.
3. A method according to claim 1 or 2, characterized in that near the stop position (79)
an adhesive is applied to the sheet (61), said adhesive functioning to bond said first
end part (61') of the sheet (61) to a part of the sheet (61) that is folded round
said object (75).
4. A method according to claim 1, 2 or 3, whereby an adhesive is applied to side edges
of the sheet (61) extending transversely to said folding line (77), characterized
in that opposite side edges of the sheet (61) folded round said object (75) are pressed
together and bonded together after the object (75) with the sheet (61) folded therearound
has been deflected in the second direction (P5) of deflection.
5. A method according to any one of the preceding claims, characterized in that an address
is provided on the envelope comprising said sheet (61) by means of a printing device
(57) after the object (75) with the sheet (61) folded therearound has been deflected
in the second direction (P5) of deflection.
6. A device (1) suitable for carrying out the method according to any one of the preceding
claims, characterized in that said device (1) is provided with a first (39), a second
(41) and a third (43) rotatable conveyor roller and also with a deflecting platform
(45) provided with a stop (79), whereby an object (75) with a sheet (61) folded therearound
can be moved in a direction of transport (T) and then in a first direction (P4) of
deflection determined by said deflecting platform (45) up to said stop (79) by means
of said first (39) and said second (41) conveyor roller, which are positioned in parallel
relationship opposite each other and which are rotatable in opposite directions during
operation, and whereby said object (75) with the sheet (61) folded therearound, which
abuts against said stop on said deflecting platform (45), can be moved in a second
direction (P5) of deflection by means of said first (39) and said third (43) conveyor
roller, which are positioned in parallel relationship opposite each other and which
are rotatable in opposite directions during operation.
7. A device (1) according to claim 6, characterized in that said device (1) is provided
with an adhesive-applying device (83) positioned near said stop (79).
8. A device (1) according to claim 6 or 7, characterized in that said device (1) is provided
with compressing means (55).
9. A device (1) according to any one of the claims 6 - 8, characterized in that said
device (1) is provided with a printer (57).
10. A device (1) according to any one of the claims 6 - 9, characterized in that said
stop (79) on said deflecting platform (45) is adjustable.
11. A device (1) according to any one of the claims 6 - 10, characterized in that the
spacing between said conveyor rollers (39, 41, 43) is adjustable.
1. Verfahren zur mindestens teilweisen Umhüllung eines Gegenstandes (75) mit einem einen
Materialbogen (61) umfassenden Umschlag, wobei der zu umhüllende Gegenstand (75) in
einer Laufrichtung (T) zu einem sich quer zu dieser Laufrichtung (T) erstreckenden
Materialbogen (61) transportiert und der Materialbogen (61) daraufhin von dem in Bewegung
befindlichen Gegenstand (75) mitgenommen und entlang einer quer zur Laufrichtung (T)
verlaufende Faltungslinie (77) um den Gegenstand (75) gefaltet wird, wobei ein erstes
Endteil (61') des Materialbogens (61) über ein - in der Laufrichtung (T) betrachtet
- hinteres Teil (75'') des Gegenstandes (75) herausragt, woraufhin dieses erste Endteil
(61') dann um dieses hintere Teil (75'') des Gegenstandes (75) gefaltet und an einem
zweiten Endteil (61'') des um den Gegenstand (75) gefalteten Materialbogens (61) befestigt
wird, dadurch gekennzeichnet, daß nach der Faltung des Materialbogens (61) um den Gegenstand (75) der nunmehr von dem
Materialbogen umhüllte Gegenstand (75) mittels erster Rollen (39) und zweiter Rollen
(41), die in gegenläufiger Richtung drehbar und einander parallel gegenüberliegend
angeordnet sind, in der Laufrichtung (T) befördert und dann in einer ersten Umlenkrichtung
(P4), die von einer Umlenkplatte (45) bestimmt wird und in einem spitzen Winkel zur
Laufrichtung (T) angeordnet ist und quer zu der Faltungslinie (77) verläuft, zu einer
vorbestimmten Anschlagposition (79) auf dieser Umlenkplatte (45) umgelenkt wird, und
der umhüllte Gegenstand (75) anschließend in einer der ersten Umlenkrichtung (P4)
entgegengesetzten Richtung bewegt wird, woraufhin er schließlich durch die erste Rolle
(39) sowie eine dritte Rolle (43), die nebeneinanderliegend und zueinander parallel
angeordnet sind, jedoch in entgegengesetzte Richtungen laufen, in eine zweite Umlenkrichtung
(P4) umgelenkt wird, die quer zu der Faltungslinie (77) verläuft, wobei das erste
Endteil (61') des Materialbogens (61) um das - in Laufrichtung (T) betrachtet - hintere
Teil (75'') des Gegenstandes (75) und um das - in der zweiten Umlenkrichtung (P5)
betrachtet - vordere Teil (75') des Gegenstandes (75) gefaltet wird.
2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß der umhüllte Gegenstand (75) bei der Umlenkung in die erste Umlenkrichtung (P4) in
eine von dem ersten Endteil (61) wegweisende Richtung umgelenkt wird, dann jedoch
bei der Umlenkung in die zweite Umlenkrichtung (P5) in eine diesem ersten Endteil
(61) zugewandte Richtung umgelenkt wird.
3. Verfahren gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß auf den Materialbogen (61) an einer nahe der Anschlagposition (79) gelegenen Stelle
ein Klebstoff aufgetragen wird, der das erste Endteil (61') des Materialbogens (61)
mit einem bereits um den Gegenstand (75) gefalteten Teil des Materialbogens (61) verklebt.
4. Verfahren gemäß Anspruch 1, 2 oder 3, wobei ein Klebstoff auf die quer zu den Faltungslinien
(77) verlaufenden Seitenkanten des Materialbogens (61) aufgetragen wird, dadurch gekennzeichnet, daß gegenüberliegende Seitenkanten des um den Gegenstand (75) gefalteten Materialbogens
aufeinandergepreßt und miteinander verklebt werden, nachdem der Gegenstand (75) mit
dem um ihn herumgefalteten Materialbogen (61) in die zweite Umlenkrichtung (P5) umgelenkt
wurde.
5. Verfahren gemäß einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß auf dem diesen Materialbogen (61) umfassenden Umschlag eine Adresse mit Hilfe einer
Bedruckungseinrichtung (57) aufgebracht wird, nachdem der Gegenstand (75) mit dem
um ihn herumgefalteten Materialbogen (61) in die zweite Umlenkrichtung (P5) umgelenkt
wurde.
6. Vorrichtung (1) zur Durchführung des Verfahrens gemäß einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, daß diese Vorrichtung (1) über eine erste (39), zweite (41) und dritte (43) drehbare
Transportrolle sowie eine Umlenkplatte (45) mit einem Anschlag (79) verfügt, wobei
sich ein Gegenstand (75) mit einem um ihn herumgefalteten Materialbogen (61) durch
die erste (39) und zweite (41) Transportrolle, die zueinander parallel gegenüberliegend
angeordnet sind und sich im Betrieb in gegenläufige Drehung versetzen lassen, in eine
erste Laufrichtung (T) und danach in eine von der Ablenkplatte (45) bestimmte erste
Umlenkrichtung (P4) bis zu dem Anschlag (79) bewegen läßt, und der an diesem Anschlag
auf der Umlenkplatte anliegende Gegenstand (75) mit dem um ihn herumgefalteten Materialbogen
(61) sodann durch die genannte erste Transportrolle (39) sowie eine dritte Transportrolle
(43), die zueinander parallel gegenüberliegend angeordnet sind und sich im Betrieb
in gegenläufige Drehung versetzen lassen, in eine zweite Umlenkrichtung bewegt werden
kann.
7. Vorrichtung (1) gemäß Anspruch 6, dadurch gekennzeichnet, daß die Vorrichtung (1) mit einer Klebstoffauftragseinrichtung (83) ausgestattet ist,
die sich nahe dem Anschlag (79) befindet.
8. Vorrichtung (1) gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Vorrichtung (1) mit einer Preßvorrichtung (55) ausgestattet ist.
9. Vorrichtung (1) gemäß einem der Ansprüche 6 - 8, dadurch gekennzeichnet, daß diese Vorrichtung (1) mit einer Bedruckungseinrichtung (57) ausgestattet ist.
10. Vorrichtung (1) gemäß einem der Ansprüche 6 - 9, dadurch gekennzeichnet, daß der Anschlag (79) auf der Umlenkplatte (45) verstellbar ist.
11. Vorrichtung (1) gemäß einem der Ansprüche 6 - 10, dadurch gekennzeichnet, daß der Abstand zwischen den Transportrollen (39, 41, 43) verstellbar ist.
1. Procédé pour envelopper, au moins partiellement, un objet (75) dans une enveloppe
comprenant une feuille (61), l'objet (75) à envelopper étant transporté dans une direction
de transport (T) vers une feuille (61) s'étendant transversalement par rapport à la
direction de transport (T), après quoi la feuille (61) est transportée par l'objet
en déplacement (75) et pliée autour de l'objet (75) suivant une ligne de pliage (77)
s'étendant transversalement par rapport à la direction de transport (T), une première
partie d'extrémité (61') de la feuille (61) s'étendant au-delà d'une partie arrière
(75''), vu dans la direction de transport (T) de l'objet (75), après quoi ladite première
partie d'extrémité (61') est pliée autour de ladite partie arrière (75'') de l'objet
(75) et est fixée sur une deuxième partie d'extrémité (61'') de la feuille (61) pliée
autour de l'objet (75), caractérisé en ce que , après que la feuille (61) a été pliée
autour de l'objet (75), l'objet (75) enveloppé dans la feuille est déplacé dans la
direction de transport (T) au moyen de premier (39) et deuxième (41) rouleaux qui
peuvent tourner dans des directions opposées et qui sont positionnés en relation parallèle
opposée, et est ensuite dévié dans une première direction (P4) de déviation qui est
déterminée par une plate-forme de déviation (45) et qui forme un angle aigu avec la
direction de transport (T) et qui s'étend transversalement par rapport à la ligne
de pliage (77) jusqu'à une position d'arrêt prédéterminée (79) sur ladite plate-forme
de déviation (45) et en ce que l'objet enveloppé (75) est ensuite déplacé dans une
direction opposée à ladite première direction (P4) de déviation, après quoi l'objet
enveloppé (75) est dévié dans une seconde direction (P5) de déviation s'étendant transversalement
par rapport à la ligne de pliage (77) au moyen dudit premier rouleau (39) et d'un
troisième rouleau (43) qui sont positionnés en relation parallèle en about et qui
peuvent tourner dans des directions opposées, la première partie d'extrémité (61')
de la feuille (61) étant pliée autour de la partie arrière (75'') de l'objet (75),
vu dans la direction de transport (T) et autour de la partie avant (75') de l'objet
(75), vu dans la seconde direction (P5) de déviation.
2. Procédé selon la revendication 1, caractérisé en ce que l'objet enveloppé (75) est
dévié dans une direction s'éloignant de la première partie d'extrémité (61') lorsque
la déviation dans la première direction (P4) de déviation a lieu, après quoi l'objet
enveloppé (75) est dévié en direction de ladite première partie d'extrémité (61')
lorsque la déviation dans la seconde direction (P5) de déviation a lieu.
3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'à proximité de la position
d'arrêt (79) un adhésif est appliqué sur la feuille (61), ledit adhésif servant à
coller ladite première partie d'extrémité (61') à une partie de la feuille (61) qui
est pliée autour dudit objet (75).
4. Procédé selon la revendication 1, 2 ou 3, dans lequel un adhésif est appliqué sur
les bords latéraux de la feuille (61) s'étendant transversalement par rapport à ladite
ligne de pliage (77), caractérisé en ce que les bords latéraux opposés de la feuille
(61) pliée autour dudit objet (75) sont pressés et collés ensemble une fois que l'objet
(75) enroulé dans la feuille (61) a été dévié dans la seconde direction (P5) de déviation.
5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une
adresse est fournie sur l'enveloppe comprenant ladite feuille (61) au moyen d'un dispositif
d'impression (57) une fois que l'objet (75) enroulé dans la feuille (61) a été dévié
dans la seconde direction (P5) de déviation.
6. Dispositif (1) adapté pour réaliser le procédé selon l'une quelconque des revendications
précédentes, caractérisé en ce que ledit dispositif (1) est muni de premier (39),
deuxième (41) et troisième (43) rouleaux transporteurs rotatifs et également d'une
plate-forme de déviation (45) munie d'une butée (79), un objet (75) enroulé dans une
feuille (61) pouvant se déplacer dans une direction de transport (T) et ensuite dans
une première direction (P4) de déviation déterminée par ladite plate-forme de déviation
(45) jusqu'à ladite butée (79) au moyen desdits premier (39) et deuxième (41) rouleaux
transporteurs qui sont positionnés en relation parallèle opposés l'un par rapport
à l'autre et pouvant tourner dans des directions opposées pendant le fonctionnement
et ledit objet (75) enroulé dans la feuille (61) qui vient en butée contre ladite
butée sur ladite plate-forme de déviation (45) pouvant se déplacer dans une seconde
direction (P5) de déviation au moyen desdits premier (39) et troisième (43) rouleaux
transporteurs qui sont positionnés en relation parallèle opposés l'un par rapport
à l'autre et qui peuvent tourner dans des directions opposées pendant le fonctionnement.
7. Dispositif (1) selon la revendication 6, caractérisé en ce que ledit dispositif (1)
est muni d'un dispositif d'application d'adhésif (83) positionné à proximité de ladite
butée (79).
8. Dispositif (1) selon la revendication 6 ou 7, caractérisé en ce que ledit dispositif
(1) est muni de moyens de compression (55).
9. Dispositif (1) selon l'une quelconque des revendications 6 à 8, caractérisé en ce
que ledit dispositif (1) est équipé d'une imprimante (57).
10. Dispositif (1) selon l'une quelconque des revendications 6 à 9, caractérisé en ce
que ladite butée (79) sur ladite plate-forme de déviation (45) peut être réglée.
11. Dispositif (1) selon l'une quelconque des revendications 6 à 10, caractérisé en ce
que l'espacement entre lesdits rouleaux transporteurs (39, 41, 43) peut être réglé.