EP0135734B1 - Verfahren und Vorrichtung zum Aufheben der Verblockung gestanzter Beutelstapel - Google Patents

Verfahren und Vorrichtung zum Aufheben der Verblockung gestanzter Beutelstapel Download PDF

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Publication number
EP0135734B1
EP0135734B1 EP19840109183 EP84109183A EP0135734B1 EP 0135734 B1 EP0135734 B1 EP 0135734B1 EP 19840109183 EP19840109183 EP 19840109183 EP 84109183 A EP84109183 A EP 84109183A EP 0135734 B1 EP0135734 B1 EP 0135734B1
Authority
EP
European Patent Office
Prior art keywords
stacks
stack
diecutting
punched
blocking
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
Application number
EP19840109183
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0135734A1 (de
Inventor
Fritz Achelpohl
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0135734A1 publication Critical patent/EP0135734A1/de
Application granted granted Critical
Publication of EP0135734B1 publication Critical patent/EP0135734B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/142—Cutting, e.g. perforating, punching, slitting or trimming using presses or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • B31B70/988—Assembling or block-forming of bags; Loading bags on a mandrel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/336—Conveyor diverter for moving work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49822—Disassembling by applying force
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53683—Spreading parts apart or separating them from face to face engagement

Definitions

  • the invention relates to a method for removing the blocking of the cut edges caused by punching stacks from flat-lying workpieces made of thermoplastic, preferably plastic bags, and a device for carrying out this method.
  • So-called shirt pockets are produced, for example, in the manner known from DE-OS 2 915 689 in that the shirt cutouts are punched out from stacks of tubular sections provided with side gussets, which are provided at the end with transverse weld seams.
  • the individual bags in the stack block with one another and / or with one another in the region of the cut edges. This blocking is noticeable when the bags are removed from the stack and also when the individual bags are opened. Unwanted blocking of stacked plastic bags can also occur if, for example, they are provided with finger hole punchings in the stack.
  • the object of the invention is therefore to remove blockages of workpieces made of thermoplastic plastic punched in the stack in a simple manner after the punching.
  • this object is achieved in a method of the type specified in the introduction in that the stacks are grasped at their front ends and, after punching, are drawn over at least their rear regions provided with the punched-out areas with progressive deflection over at least one supporting edge. Due to the increasing radius of curvature of the individual bags with increasing distance from the supporting edge, they experience a relative displacement in the stack, which, supported by the progressive bending of the stack, leads to a lifting of the blocking of the cut edges.
  • a device known, for example, from DE-OS 2 915 689, is developed according to the invention for carrying out the method according to the invention in such a way that the conveying device consists of a carriage with the clamping jaws clamping in each case the die to be punched, which between its position in which the stacks are received and in which they are emitted is movable, and that two rods are arranged in the conveying direction of the carriage behind the punching tool below the conveying plane transversely to the conveying direction, between which a rod that can be raised and lowered and passes through the conveying plane can be moved.
  • the punched bag block is pulled by the carriage in a double-S-shaped manner between the deflection edges formed by the bars, so that blocked cutting edges are caused by correspondingly walking through the stack and thereby solve resulting relative displacements of the individual layers in the stack.
  • the device consists of two side frames 1 arranged at a distance from one another, of which only the rear one is shown. Between the two side frames 1, the two end-side deflecting rollers 2 and 3 of a feed conveyor belt 4 are mounted, through which a stack of bags can be fed.
  • a shaft 5 is provided adjacent to the lower deflection roller 2 and carries a toothed belt wheel 6 at both ends. Two toothed belts 7 are placed around these two toothed belt wheels 6, which, in addition to the toothed belt wheels 6, loop around two toothed belt wheels 7 'which are placed on the ends of a further shaft 8.
  • One of the shafts 5 or 8 is drivably mounted in a manner not shown.
  • a carriage 9 is fastened to the upper run of the toothed belt 7, the rollers 10 of which are movably supported in lateral guide slots 11 of the side frames 1.
  • a punching device 12 is provided, which consists of a lower fixed counter knife 13 and an upper punch 15 which can be actuated by a piston-cylinder unit 14. When the punch 15 is raised, the carriage 9 can be passed between the punch 15 and the counter knife 13.
  • the carriage 9 consists of a base frame 16 which has an upper carrier plate 17.
  • a holder 18 is welded to this carrier plate 17, the upper end of which is connected in an articulated manner to the piston rod 19 of a piston-cylinder unit 20.
  • the cylinder 21 of this piston-cylinder unit 20 is connected by means of a bracket 22 to a bracket 23 which is welded to the carrier plate 17.
  • Two levers 24, which are arranged at a distance from one another and which carry a crossbar 25, are fastened to the tab 22.
  • a plurality of downwardly projecting clamping pins 26 are screwed into this crossbar 25. In the position shown in full lines, these clamping pins are supported on a counter-holder 27 which is firmly connected to the frame 16 of the carriage 9.
  • the clamping pins 26 move into the raised position shown with dashed lines. If a stack of bags is now transported from the feed belt 4, the carriage 19 travels between the raised punch 15 and the fixed counter knife 13 to the left until shortly before the end of the feed belt 4. After the clamping pins 26 have been lifted, the bag package brought in is then removed from the feed belt 4 with its moved front area between the counter holder 27 and the clamping pin 26 and then the clamping pin 26 closed.
  • the carriage 9 then moves into the position shown in FIG. 1, so that the rear end of the stack of bags 28 lies between the fixed counter knife 13 and the stamp 15.
  • the distance between the fixed counter knife 13 and the outlet end of the conveyor belt 4 is by a support table 29 bridged, which is rotatably mounted about the axis 30 and is supported with its other end on a spring 31.
  • the end of the support table 29 lying opposite the axis 30 engages in regions around the counter knife 13 and serves as an ejector after the punching process.

Landscapes

  • Making Paper Articles (AREA)
  • Packaging Of Special Articles (AREA)
  • Pile Receivers (AREA)
  • Details Of Cutting Devices (AREA)
EP19840109183 1983-08-29 1984-08-02 Verfahren und Vorrichtung zum Aufheben der Verblockung gestanzter Beutelstapel Expired EP0135734B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3331069 1983-08-29
DE19833331069 DE3331069A1 (de) 1983-08-29 1983-08-29 Verfahren und vorrichtung zum aufheben der verblockung gestanzter beutelstapel

Publications (2)

Publication Number Publication Date
EP0135734A1 EP0135734A1 (de) 1985-04-03
EP0135734B1 true EP0135734B1 (de) 1987-07-15

Family

ID=6207685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840109183 Expired EP0135734B1 (de) 1983-08-29 1984-08-02 Verfahren und Vorrichtung zum Aufheben der Verblockung gestanzter Beutelstapel

Country Status (7)

Country Link
US (1) US4589183A (https=)
EP (1) EP0135734B1 (https=)
JP (1) JPS6072722A (https=)
CA (1) CA1223900A (https=)
DE (1) DE3331069A1 (https=)
DK (1) DK409884A (https=)
ES (1) ES8505289A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3432385C2 (de) * 1984-09-03 1986-07-17 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Stanzen von Stapeln aus flachen Werkstücken

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL121610C (https=) * 1964-03-12 1966-12-15
US3401446A (en) * 1966-04-07 1968-09-17 Branson Instr Method for delaminating articles
US3728772A (en) * 1971-10-26 1973-04-24 R Coffman Tape breaker (case 1)
AT342630B (de) * 1975-11-03 1978-04-10 Sticht Walter Vorrichtung zum auflosen eines folien- oder blattstapels
US4064083A (en) * 1976-06-28 1977-12-20 Precision Metalsmiths, Inc. Pattern material composition
US4195758A (en) * 1978-04-03 1980-04-01 Gte Automatic Electric Laboratories, Incorporated Apparatus for separating snapstrates into individual hybrid substrates
DE2915689C2 (de) * 1979-04-18 1985-07-25 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zur lagerichtigen Abgabe von von einer Materialbahn abgetrennten Abschnitten
DE2902519C2 (de) * 1979-01-23 1985-10-10 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Ablegen von von einer Folienbahn abgeschweißten Abschnitten
DE3107287C2 (de) * 1981-02-26 1984-06-20 Windmöller & Hölscher, 4540 Lengerich Verfahren und Vorrichtung zum Herstellen von Stapeln aus bodengeschweißten Kunststoffsäcken
US4441844A (en) * 1982-04-12 1984-04-10 Miller Curtis D Portable panel separation device

Also Published As

Publication number Publication date
ES535468A0 (es) 1985-05-16
DE3331069A1 (de) 1985-03-14
DK409884A (da) 1985-03-01
EP0135734A1 (de) 1985-04-03
DK409884D0 (da) 1984-08-28
JPS6072722A (ja) 1985-04-24
DE3331069C2 (https=) 1988-11-10
US4589183A (en) 1986-05-20
ES8505289A1 (es) 1985-05-16
CA1223900A (en) 1987-07-07

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