EP0294321B1 - Dispositif pour alimenter une machine d'emballage sélectivement à partir d'une des deux bandes de matériau d'enveloppement - Google Patents

Dispositif pour alimenter une machine d'emballage sélectivement à partir d'une des deux bandes de matériau d'enveloppement Download PDF

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Publication number
EP0294321B1
EP0294321B1 EP19880810178 EP88810178A EP0294321B1 EP 0294321 B1 EP0294321 B1 EP 0294321B1 EP 19880810178 EP19880810178 EP 19880810178 EP 88810178 A EP88810178 A EP 88810178A EP 0294321 B1 EP0294321 B1 EP 0294321B1
Authority
EP
European Patent Office
Prior art keywords
holder
sheet
sheets
conveyed
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19880810178
Other languages
German (de)
English (en)
Other versions
EP0294321A2 (fr
EP0294321A3 (en
Inventor
Theo Walz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Publication of EP0294321A2 publication Critical patent/EP0294321A2/fr
Publication of EP0294321A3 publication Critical patent/EP0294321A3/de
Application granted granted Critical
Publication of EP0294321B1 publication Critical patent/EP0294321B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/14—Feeding webs from rolls by grippers

Definitions

  • a device according to the preamble of claim 1 is known from Research Disclosure, volume 146, June 1976, pages 23-24, ref. 14626.
  • This document describes a reel changer with two supply rolls with wrapping material webs.
  • the two tracks are each guided via a memory and a guide track to a common holder, in which the two tracks are guided via converging guide channels to a common outlet slot of the holder, which only one track projects over.
  • There it is drawn off intermittently by a pull-off device using a cutting knife.
  • Upstream of the holder each web is guided over a separate, freely rotatable roller.
  • a feed element in the form of a roller with two circular cylinder segments offset from one another by 180 ° is rotatably mounted between the two rollers. When a supply roll is used up, the feed element is turned through 180 °. The two circular cylinder segments press against one of the rollers, so that the previously advanced path is pulled back and the other path is advanced.
  • This known device is probably suitable for automatic switching at the end of the tape supply.
  • it is not suitable if e.g.
  • the wrapping material webs have to be pulled off alternately or alternately from two supply rolls, because when one web is withdrawn, it is immediately threaded out, on the one hand by the weight of the web in the store, and on the other hand by the inertia of the roller, which continues to rotate after the switching movement in the retracting sense.
  • the present invention has for its object to develop a device of the type mentioned in such a way that it also e.g. is suitable for changing formats without the retracted web inevitably coming out. This object is achieved by the characterizing features of claim 1.
  • a device for feeding wrapping material sections to a packaging machine, which, however, has to be shut down for the roll change, is known from GB-PS 2025373.
  • a brake is connected downstream of the memory.
  • the device shown comprises two supply rolls 1, 2, from each of which a wrapping material web, for example a film 3, 4, is pulled off.
  • the foils 3, 4 are each one Storage 5, 6 and a guide track 7, 8 each led to a holder 9.
  • the accumulators 5, 6 enable the films 3, 4 to be withdrawn in cycles and consist of two stationary, rotatable rollers 15 and a roller 17 tensioned by a spring 16, which is wrapped in a loop by the relevant film 3, 4.
  • the guideways 7, 8 are formed by a central plate 18 and a curved plate 19 each. The lower part of the plate 19 runs parallel to the middle plate 18 and forms with it a guide channel 20 for the film 3, 4.
  • the holder 9 consists of a wedge 21 and two plates 22 arranged parallel to the wedge surfaces and rigidly connected to the wedge 21. Two further guide channels 23 aligned with the channels 20 are formed between the wedge 21 and the plates 22. These converge downward and open into a common exit slot 24.
  • the holder 9 can be pivoted about a horizontal axis 25 between the basic position shown in solid lines, in which the free end 26 of the film 3 protruding from the slot 24 is adjacent to a fixed knife 30 of a separating device 31 and a dashed end position, in which the end 26 is in the path of a movable gripper 35 of a trigger device 36.
  • the drives 37, 38, 33 of the gripper 35, the holder 9 and a movable knife 32 which are only shown schematically, are coupled to one another, for example via cam disks on a common camshaft, and are moved in time with a downstream packaging machine, not shown.
  • a brake 45, 46 designed as a spring-loaded pivot lever 44.
  • the lever 44 forms an acute angle with the plate 19 and acts as a backstop as well as a brake.
  • the brakes 45, 46 can be released by means of a pneumatic cylinder 47, in that the lever 44 is pivoted away from the plate 19.
  • a blocking plunger 51 which is actuated by a pneumatic cylinder 50, engages in the guide channels 20 and penetrates an opening 52 in the plate 19 in the switched-on state and presses the film 3 or 4 against the central plate.
  • a feed element 57, 58 is arranged on both sides in the form of a cylinder segment 60 which can be pivoted about an axis 59.
  • the two pivot axes 59 are parallel to one another and symmetrical to the central plane of the plate 18.
  • a roller 61 is mounted freely rotatably in the plate 18 centrally between the axes 59.
  • the periphery 62 of the segments 60 carries an elastomeric coating 63. When the segments 60 pivot, they take the foils 3, 4 with them between the periphery 62 and the rotating roller 61. However, the frictional connection between the periphery 62 and the film 3, 4 is smaller than the braking effect of the brakes 45, 46.
  • a gearwheel 70 is fastened on each of the two axes 59. The two gears 70 mesh with one Another gear 71, which can be pivoted between two end positions by means of a pneumatic cylinder 72.
  • the device described works as follows: In the position shown in FIG. 1, the film 3 of the supply roll 1 is stretched tightly over the plate 19 of the guideway 7 and its end 26 protrudes from the slot 24.
  • the holder 9 swings cyclically into the Position shown in broken lines, where the end 26 is gripped and pulled by the gripper 35.
  • a film section is cut off with the separating device 31.
  • the film 4 is threaded in from the full spare roll 2, i.e. inserted into the guideway 8 via the memory 6 and the brake 46.
  • a mark 81 is attached to the edge of the film 4, which when threading was made to coincide with a tear 82 on the upper, inclined part of the plate 19.
  • the film 4 is loosely inserted into the guide track 8 and the guide channel 23, so that it forms a loop 83 and its end does not protrude beyond the slot 24.
  • the loop 83 is dimensioned such that the distance of the free end of the film 4 from the knife 30 is shorter than the length of the periphery 62 of the segment 60 measured in the circumferential direction. The film 4 is held in this position by the plunger 51.
  • the pneumatics switches cylinder 72 um, so that the segments 60 move from the position shown in FIG. 1 to the position shown in FIG. 2.
  • the end 26 of the film 3 is pulled back through the slot 24 and the end of the film 4 is pushed out of the slot 24, so that the end of the next cycle Foil 4 is gripped by the gripper 35 and pulled off.
  • the loop 83 is tightened. Because of the aligned mark 81, the front edge of the film 4 is exactly at the height of the knife 30, so that, in contrast to previously known solutions, for example those according to US Pat Roll 1, 2 no incorrectly packaged products have to be eliminated.
  • the loop 83 of the film 4 is merely pulled tight during the switching process without the mark 81 slipping relative to the crack 82.
  • the length of the loop 83 therefore only needs to be set approximately.
  • the brake 45 of the outflowing film 3 is released at the same time by means of the associated pneumatic cylinder 47.
  • the spring 16 therefore pulls the rest of the film 3 out of the guideway 7.
  • the empty roll 1 can now be exchanged for a new roll and the film back in be threaded into the guideway 7 in the manner described.
  • the switching process from one film 3 to the other film 4 is linked to the cycle of the gripper 35, in that the cylinder 72 does not move until the gripper 35 has reached its lower end position.
  • the device described is also suitable for the automatic, uninterrupted format change, with a new roll with a film of the width of the new format being introduced on the side that is not in operation at the moment before the change.
  • the format change can be carried out depending on the length of the products delivered to the packaging machine, in that the appropriate film width is pushed in and the other is pulled back. In this operating mode, the brake 45 or 46 assigned to the retracted film 3 or 4 is not released.
  • a plurality of segments 60 can be fastened on a common pivot axis 59, the roller 61 being subdivided accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (6)

1. Dispositif pour alimenter sélectivement une machine d'emballage avec l'une de deux bandes de matériau d'emballage (3, 4), comprenant un premier rouleau d'approvisionnement (1) portant une première bande de matériau d'emballage (3) qui est dirigée vers un poste de maintien (9) en passant par un premier dispositif de formation de réserve (5) et une première glissière (7), un deuxième rouleau d'approvisionnement (2) portant une deuxième bande de matériau d'emballage (4) qui est dirigée vers le poste de maintien (9) en passant par un deuxième dispositif de formation de réserve (6) et une deuxième glissière (8), ainsi qu'un dispositif d'extraction (36) destiné à extraire l'une des bandes (3, 4) à partir du poste de maintien (9) à travers un dispositif de sectionnement (31) qui coupe la bande de matériau d'emballage en tronçons de longueur prédéterminée, les deux bandes (3, 4) étant dirigées, par des canaux de guidage convergents (23) formés dans le poste de maintien (9), vers une fente commune (24) de sortie du poste de maintien (9) par laquelle ne sort que l'une des deux bandes (3, 4), deux éléments d'avancement (57, 58) commutables en sens inverses étant disposés en amont du poste de maintien (9), éléments dont l'un (57) tire une bande (3) en arrière à travers la fente (24) lors de l'opération de commutation et l'autre (58) fait avancer l'autre bande (4) hors de la fente (24), et les élèments d'avancement (57, 58) étant des secteurs cylindriques circulaires (60) qui oscillent autour de leurs axes (59) et dont la périphérie (62) entre en prise, lors de l'opération de commutation, avec la bande associée (3, 4) qui est guidée sur un rouleau (61) monté à rotation libre, caractérisé en ce que les deux secteurs cylindriques circulaires (60) oscillent autour d'axes (59) séparés, distants l'un de l'autre, et sont accouplés l'un à l'autre en vue d'un mouvement oscillant synchrone, en ce que les deux bandes (3, 4) sont guidées sur le rouleau (61) qui est monté à rotation libre au milieu entre les deux axes de pivotement (59) des secteurs (60) et qui est disposé en aval des deux glissières (7, 8), en ce qu'un frein (45, 46) est adjoint à chaque bande (3, 4) en amont des éléments d'avancement (57, 58) et en aval des dispositifs de formation de réserve (5, 6), et en ce que les freins (45, 46) peuvent être desserrés chacun par un élément d'actionnement (47).
2. Dispositif selon la revendication 1, caractérisé en ce que la friction exercée par les secteurs (60) sur la bande (3, 4) est plus faible que la friction exercée par le frein associé (45, 46) sur la bande (3, 4).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la périphérie (62) des secteurs (60) est garnie d'une couche de revêtement en élastomère (63).
4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'il est disposé, dans chacune des glissières (7, 8), en amont des éléments d'avancement (57, 58), un élément de blocage commutable (50, 51) pour maintenir la bande (3, 4) dans la position attirée en arrière.
5. Dispositif selon la revendication 4, caractérisé en ce que chaque élément de blocage (50, 51) est disposé entre le frein associé (45, 46) et l'élément d'avancement associé (57, 58).
6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le poste de maintien (9) est oscillant.
EP19880810178 1987-05-11 1988-03-21 Dispositif pour alimenter une machine d'emballage sélectivement à partir d'une des deux bandes de matériau d'enveloppement Expired - Lifetime EP0294321B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH179387 1987-05-11
CH1793/87 1987-05-11

Publications (3)

Publication Number Publication Date
EP0294321A2 EP0294321A2 (fr) 1988-12-07
EP0294321A3 EP0294321A3 (en) 1989-04-19
EP0294321B1 true EP0294321B1 (fr) 1991-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880810178 Expired - Lifetime EP0294321B1 (fr) 1987-05-11 1988-03-21 Dispositif pour alimenter une machine d'emballage sélectivement à partir d'une des deux bandes de matériau d'enveloppement

Country Status (3)

Country Link
EP (1) EP0294321B1 (fr)
DE (1) DE3866785D1 (fr)
ES (1) ES2027795T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1379457A1 (fr) 2001-04-10 2004-01-14 Cermex-Quest Conditionnement Procede pour recharger une fardeleuse a l'aide d'un film plastique, et fardeleuse mettant en oeuvre le procede

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902848A (nl) * 1989-11-17 1991-06-17 Tevopharm Schiedam Bv Inrichting voor het continu toevoeren van stukken velvormig materiaal naar een verwerkingsmachine.
EP2336033B1 (fr) * 2009-12-21 2013-01-09 MSK - Verpackungs-Systeme GmbH Dispositif et procédé destinés à l'enveloppement d'une pile de marchandise à l'aide d'une feuille
DE102014015433B4 (de) * 2014-10-14 2017-09-07 Mcs Micronic Computer Systeme Gmbh Einrichtung
DE102019203746A1 (de) * 2019-02-07 2020-08-13 Bhs Corrugated Maschinen- Und Anlagenbau Gmbh Klebestück

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH421795A (de) * 1965-01-29 1966-09-30 Sig Schweiz Industrieges Vorrichtung an einer Verarbeitungsmaschine zum Verbinden des Endes eines Materialbandes mit dem Anfang eines zweiten Materialbandes
CS167015B1 (fr) * 1973-07-24 1976-04-29
US4190475A (en) * 1978-05-16 1980-02-26 Marquip, Inc. Paper roll web splicing
IT1146017B (it) * 1981-04-09 1986-11-12 Sasib Spa Metodo e dispositivo per l alimentazione continua autoselettiva di nastri anche con tratti di scarto in un dispositivo elettronico per il taglio progressivo di bobine di carta stampata a foglietti

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1379457A1 (fr) 2001-04-10 2004-01-14 Cermex-Quest Conditionnement Procede pour recharger une fardeleuse a l'aide d'un film plastique, et fardeleuse mettant en oeuvre le procede

Also Published As

Publication number Publication date
DE3866785D1 (de) 1992-01-23
EP0294321A2 (fr) 1988-12-07
EP0294321A3 (en) 1989-04-19
ES2027795T3 (es) 1992-06-16

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