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CN-114180373-B - Device and method for splicing and continuously providing a film web

CN114180373BCN 114180373 BCN114180373 BCN 114180373BCN-114180373-B

Abstract

The invention relates to a device and a method for splicing and continuously providing an output film web. The device comprises a splicing unit for splicing the first or second input film web with the output film web, and a clamping unit and a film register for the output film web which is arranged behind the clamping unit. The splicing unit comprises a first sealing cheek with a first holding device for the outgoing film web and a first cutting device for separating the outgoing film web in the region of the first sealing cheek. The splicing unit further comprises a second sealing cheek with a second holding device for the first or second fed film web alternately and a second cutting device for separating the fed film web. The first sealing cheeks with the first holding device and the second sealing cheeks with the second holding device can travel relative to one another out of the active areas of their first and second cutting devices into their interaction areas.

Inventors

  • A. pedicle Ernst
  • T. Walker

Assignees

  • 德国翰辉包装机械有限责任公司

Dates

Publication Date
20260508
Application Date
20210914
Priority Date
20200914

Claims (11)

  1. 1. An apparatus (1) for splicing and continuously providing an outgoing film web (3), comprising a first film supply (6) for supplying a first incoming film web (4), a second film supply (7) for supplying a second incoming film web (5), a splicing unit (8) for splicing the first incoming film web (4) or the second incoming film web (5) to the outgoing film web (3), and a clamping unit (9) and a film register (10) for the outgoing film web (3) downstream of the clamping unit (9), wherein the splicing unit (8) comprises a first sealing cheek plate (11) with a first holding device (12) for the outgoing film web (3) and a second cutting device (13) for separating the outgoing film web (3) in the region of the first sealing cheek plate (11), wherein the splicing unit (8) further comprises a first cutting device (14) with alternating first webs (4) for the first incoming film web (5) or second sealing cheek plates (5) for separating films (16) of the incoming film web (5), wherein the first sealing cheek (11) with the first holding device (12) and the second sealing cheek (14) with the second holding device (15) can travel relative to each other out of the region of action of their first and second cutting devices (13, 16) into their region of interaction.
  2. 2. The device according to claim 1, characterized in that the first sealing cheeks (11) with the first holding means (12) and the second cutting means (16) are alternately movable into the region of action of the second sealing cheeks (14) with the second holding means (15).
  3. 3. The device according to claim 1, characterized in that the splicing unit (8) has a first preparation station (17) for the first incoming film web (4) and a second preparation station (18) for the second incoming film web (5), wherein the first preparation station (17) and the second preparation station (18) can travel reciprocally between an active operating position and a passive preparation position, wherein the first preparation station (17) and the second preparation station (18) each have a holding device (19) for a free end section (21) of the first incoming film web (4) or of the second incoming film web (5) and a separating region (20) for separating the free end section (21), wherein the second cutting device (16) is arranged in the separating region (20) of one of the two preparation stations (17, 18), and wherein the second carrier (16) is arranged in the separating region (20) of the other of the two preparation stations (17, 18) and the second carrier (23) is arranged adjacent to the second carrier (14) thereof.
  4. 4. A device according to claim 3, characterized in that the holding means (19) for the free end section (21) is movable relative to the separation region (20) against spring prestressing.
  5. 5. A device according to claim 3, characterized in that the preparation table (17, 18) is supported horizontally movably and the first sealing cheeks (11) with the first holding means (12) are supported vertically movably.
  6. 6. The device according to claim 1, characterized in that the first cutting device (13) and/or the second cutting device (16) are formed by heating a wire.
  7. 7. The device according to claim 1, characterized in that the first holding means (12) and/or the second holding means (15) are formed by a vacuum plate.
  8. 8. A method for operating a device for splicing and continuously providing an outgoing film web (3), wherein the device for splicing comprises a first film supply (6) for supplying a first incoming film web (4), a second film supply (7) for supplying a second incoming film web (5), a splicing unit (8) for splicing the first incoming film web (4) or the second incoming film web (5) with the outgoing film web (3), and a holding unit (9) and a film register (10) for the outgoing film web (3) lying downstream of the holding unit (9), wherein the splicing unit (8) comprises a first sealing plate (11) with a first holding device (12) for the outgoing film web (3) and a first cutting device (13) for separating the outgoing film (3) in the region of the first sealing plate (11), wherein the splicing unit (8) comprises a second cutting device (14) with the second sealing plate (14) for alternately holding the outgoing film web (4) with the first film web (5) and the second film web (5) in addition to the second sealing device (14) for separating the outgoing film web (5), wherein the first sealing cheek (11) with the first holding device (12) and the second sealing cheek (14) with the second holding device (15) can travel relative to each other out of the region of action of their first and second cutting devices (13, 16) into their region of interaction, wherein the method comprises the following method steps: in normal operation, one of the two input film webs (4, 5) is continuously fed as an output film web (3) through the film register (10) and out of the device (1); -upon recognition of an inclination of the one of the two incoming film webs (4, 5), the outgoing film web (3) is fixed by means of the holding unit (9) and guided out of the device (1) on the outgoing side of the holding unit (9) with removal from the film register (10); -the outgoing film web (3) is held by means of the first holding device (12) at the first sealing cheek (11) and separated by means of the first cutting device (13) in the region of the first sealing cheek (11); -the other of the two incoming film webs (5, 4) is held at the second sealing cheek (14) by means of the second holding device (15) and separated in the region of the second sealing cheek (14) by means of the second cutting device (16); -the first sealing cheeks (11) with the outgoing film web (3) held and separated at the first holding device (12) and the second sealing cheeks (14) with the second or first incoming film web (5, 4) held and separated at the second holding device (15) run relative to each other out of the active areas of their first and second cutting devices (13, 16) into their interaction areas, and the separated second or first incoming film web (5, 4) is spliced at the separated outgoing film web (3) by means of the co-acting sealing cheeks (11, 14); -the clamping unit (9) is opened again and the normal operation is continued with the spliced output film web (3).
  9. 9. Method according to claim 8, characterized in that the outgoing film web (3) and the two incoming film webs (4, 5) are water-soluble and that the outgoing water-soluble film web (3) is supplied to a machine (2) for manufacturing filled water-soluble bags.
  10. 10. Method according to claim 9, characterized in that the outgoing film web (3) and the two incoming film webs (4, 5) consist of PVOH.
  11. 11. The method according to claim 9, characterized in that the machine (2) is configured as a continuously operating machine.

Description

Device and method for splicing and continuously providing a film web Technical Field The invention relates to a device and a method for splicing and continuously providing a film web. Background In many fields of application, the film web seems to be processed as a continuous material and is pulled out of the supply roll (Vorratsrolle) for this purpose. In a continuous process, in which a continuous supply of such a film web is dependent, a solution must be provided for the case that the storage roll is inclined and exchangeable with respect to the other storage roll. The known method involves splicing of the old oblique film web with the film web of the new additional roll. The end of the outgoing film web is connected to the beginning of the new incoming film web in such a way that a seemingly coherent film web is formed. Which may include splice sites, are fed into a post-positioned machine. A particular application is in the manufacture of filled film packages made of water-soluble films. For this purpose, the film web is guided through a machine, in which it is deep drawn to form the receiving space. The receiving space is filled with a product, for example in the form of a cleaning or flushing agent, and is then tightly sealed with a cover film. Finally, the different sealed chambers are separated by cutting in such a way that partial packaging occurs, for example, for applications in washing or cleaning machines. Such partial packages can be put into a corresponding machine, wherein the film dissolves and releases the contents when in contact with the flushing water. At the same time, the abovementioned principles have long been known per se, and increasingly continuous processes have recently been used in which water-soluble films are transported continuously, i.e. without pulses, through the machine. The splicing that occasionally becomes necessary is performed manually. In this case, the end sections of the new and/or old film web are wetted and pressed against one another according to the prior art, whereby the two are sealed against one another. On both sides of the sealing site, loose end strips (ENDFAHNEN, sometimes referred to as end flaps) are left, which are manually fixed with adhesive tape. Such a produced splice site can be fed even continuously and without interruption into a subsequent machine. A deep drawing and sealing process of high quality is however not feasible in this region. As a result, the filling of the cavity must be interrupted in the region of the splice point, since the filling of the usually occurring loose packaging units escapes and contaminates the machine. The filling process, which is then partially interrupted, is followed by a separation process, wherein the longitudinal and transverse cuts are performed continuously without using a cutting grid. Unlike filling, the cutting may not be interrupted, as typically the packaging unit is not removable from the machine with or without filling. The sealing points are thus likewise cut as is the case with product-filled film webs, which leads to a number of difficulties. In particular, loose and adhesive-tape-fixed end strips of the splice region form loose film segments after cutting, which propagate uncontrollably in the machine and can lead to jams and other process disturbances until the machine is shut down. Disclosure of Invention The invention is based on the task of creating a device for splicing and continuously providing an output film web, which avoids the aforementioned problems. The object is achieved by a device for splicing and continuously providing an outgoing film web, comprising a first film supply for supplying a first incoming film web, a second film supply for supplying a second incoming film web, a splicing unit for splicing the first or second incoming film web to the outgoing film web, and a clamping unit and a film register for the outgoing film web arranged downstream of the clamping unit, wherein the splicing unit comprises a first sealing cheek (Siegelbacke, sometimes also referred to as a sealing side plate) with a first holding device for the outgoing film web and a first cutting device for separating the outgoing film web in the region of the first sealing cheek, wherein the splicing unit further comprises a second sealing cheek with a second holding device for alternately the first or second incoming film web and a second cutting device for separating the first or second incoming film web, wherein the first sealing cheek with the first holding device and the second sealing cheek with the second holding device travel relative to one another from the first holding device and into the interaction region thereof. The invention is based on the object of specifying a method for operating such a device, which enables a problem-free cutting of the film web, in particular in the region of the splice. This object is achieved by a method for operating a device for splicing and continuously providing