EP0544078B1 - Vorrichtung zum Abtrennen von mit Querschweissnähten versehenen Schlauchstücken von einer Bahn und zu deren Stapeln - Google Patents

Vorrichtung zum Abtrennen von mit Querschweissnähten versehenen Schlauchstücken von einer Bahn und zu deren Stapeln Download PDF

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Publication number
EP0544078B1
EP0544078B1 EP92116565A EP92116565A EP0544078B1 EP 0544078 B1 EP0544078 B1 EP 0544078B1 EP 92116565 A EP92116565 A EP 92116565A EP 92116565 A EP92116565 A EP 92116565A EP 0544078 B1 EP0544078 B1 EP 0544078B1
Authority
EP
European Patent Office
Prior art keywords
drum
transverse
welding
stacking
station
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
EP92116565A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0544078A1 (de
Inventor
Hans-Ludwig Dipl.-Ing. Voss
Andreas Dipl.-Ing. Schrödter
Uwe Dipl.-Ing. Köhn
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 EP0544078A1 publication Critical patent/EP0544078A1/de
Application granted granted Critical
Publication of EP0544078B1 publication Critical patent/EP0544078B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B31B70/984—Stacking bags on wicket pins
    • 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
    • B31B2155/00—Flexible containers made from 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a cooling chamber coated with blown air is provided between the cross-welding and separating station and the stacking station, in which bottom weld seams are cooled when the sections are deposited on the stack.
  • a rotating computing drum is provided in the lower region of the cooling chamber, on the rotating rods of which, forming the envelope cylinders, the ends of the sections provided with the bottom weld seams fall that they are fanned out.
  • the object of the invention is to provide a device of the type mentioned, which ensures good cooling of the trailing or bottom weld seams of the sections, so that these can be stacked one on top of the other without fear of sticking in the area of the bottom weld seams.
  • this object is achieved in a device of the generic type by the features of the characterizing part of claim 1.
  • the drum can be driven continuously or preferably intermittently. After each advance of the leading end of the web and its fixing in the stacking station, the section provided with a rear transverse weld seam and separated from the web is taken along by rotation of the drum from a rod or a wall part forming the enveloping cylinder, so that the rear with the bottom weld seam a detour and can cool down.
  • the drum is expediently provided with two mutually opposite cylindrical shell-shaped wall parts.
  • a baffle is arranged approximately in a horizontal plane within the envelope cylinder of the drum. This baffle ensures trouble-free pushing of the leading end of the web through the column of the drum.
  • the guide plate there is an elongated chamber which is connected to an air line and whose lower wall is provided with air outlet nozzles. Blown air under pressure can be introduced into this chamber, so that blown air emerges from the nozzles and blows down the respective rear end of a welded section or bag so that it lies on the stack that is being formed.
  • the blowing air emerges expediently from the nozzles in time with the rotation.
  • the blown air blown out of the nozzles of the chamber not only supports the good placement of the sections or bags on the stack, but additionally also cools the weld seams.
  • the part of the guide plate facing the cross-welding and cross-cutting station is expediently angled or bent downward, so that it forms a ramp-shaped run-up area for the freely advanced end of the web.
  • the lower jaw is provided with an elastic strip such that it or the like in the gaps between two rods. is supported on the edge area of the guide plate.
  • This elastic strip bridges the gap between the clamping jaw and the guide plate, so that the freely protruding end of the tubular web cannot come into contact or get caught.
  • the lower jaw of the pair of clamping jaws is also expediently designed to be lowerable and liftable.
  • an elastic strip is attached to the edge region of the guide plate facing the stacking station, which strip or the like, the gaps between the rods. interspersed in the radial direction.
  • This elastic strip bridges the gap between the guide plate and the stacking station or the rear end of the stacking table of the stacking station.
  • the drum rotates, it sweeps the rear area of the section still lying on the guide plate over the back of the next rod or the wall part of the drum, so that particularly good cooling of the bottom weld seam is achieved.
  • the stack expediently forms with its rear end hanging freely downward between the drum and the rear edge of a stacking table.
  • a pair of preferred rollers 1 pulls a double web or a flat tubular film web made of thermoplastic material, for example from a supply roll in cycles.
  • This preferred pair of rollers is followed by a welding device 2, by means of which individual bags are separated from the film web.
  • the individual bags are then fed to a stacking station 4 via a transfer device 3.
  • a gripper carriage 5 After forming a stack more predetermined This is then gripped by a gripper carriage 5 and fed to a punch 6.
  • this punch 6 By means of this punch 6, the stack is punched out in such a way that a stack of shirt bags 7 is produced, which is then deposited by a further transport device 8 on a discharge conveyor belt 9 such that the individual stacks 10 lie in a scale formation on the belt 9.
  • Such a system is known except for the transfer device 3. Therefore, only the construction in this area and the function of the transfer device are to be explained below with reference to FIGS. 1-7.
  • a welding device 2 can be seen from FIG. 2, which has an upper and a lower welding bar 11 and 12, which can be moved against each other. Both welding jaws have a central groove 13 and 14, a separating knife 15 being arranged in the upper groove 13, which can dip into the lower groove 14 and thereby cut through the tubular film web held between the welding jaws 19, 20.
  • Each welding bar 11 and 12 has two welding jaws 17, 18 and 19, 20 running parallel to one another, so that two welding seams running parallel to one another are formed during the welding process, between which the cut then takes place.
  • the leading head seam is designated with 21 and the trailing bottom seam with 22.
  • the following bottom seam 22 is located on a piece of bag 23 that has already been needled.
  • the actual welding device 2 is assigned clamping jaws 24 and 25, so that the film is held on the one hand by the clamping device 24, 25 and on the other hand by the pair of preferred rollers 1 during the welding process.
  • a pipe 26 which extends over the width of the entire machine, is rotatably mounted in a manner not shown, which has two wide slots 27 and 28 located opposite one another. Inside of this tube is a transfer plate 29 is arranged, which can be fixed in the side parts of the machine.
  • an arcuately curved sheet preferably a cylindrical shell-shaped sheet
  • the arcuately curved sheet is provided with rows of bores which form blowing air nozzles from which blowing air can escape in the direction of the arrows.
  • the sides of the elongated blown air chamber are closed by end plates (not shown), one end plate being provided with a connection for supplying the blown air.
  • the blown air supply is expediently switched in such a way that blown air always emerges from the blown air nozzles when a rear section or bag end detaching from the lower jacket region of the drum 26 has to be blown onto the depending rear part of the stack being formed.
  • This strip 30 bridges the short distance from the lower clamping jaw 25 to the transfer plate 29.
  • a further strip 31 is also firmly connected to the latter and also made of elastic material, which free space between the right end facing the viewer the transfer plate 29 bridges to the stacking station 4.
  • FIG. 2 shows the situation in which two pieces of sack are already needled in the stacking station 4. However, the last piece of bag 23 needled does not hang down freely, rather it loops bottom end still partially around the lower jacket region 26 'of the tube 26.
  • the pair of preferred rollers 1 is actuated so that the tubular web is carried forward with the head seam 21 leading in accordance with the desired bag length.
  • the end of this preferred movement is shown in Figure 3. From this figure it can be seen that the needles 32 are arranged so deep that they do not hinder the advance of the film web. The film web is guided through the two slots 27 and 28 of the tube 26 and partly lies on the transfer plate 29.
  • the two clamping jaws 24 and 25 then move against one another, so that in the area of the welding device 2 the film web is clamped on the one hand by the clamping jaws 24 and 25 and on the other hand by the pair of preferred rollers 1.
  • the strip 33 of the stacking station 4 also moves downward, so that the tubular film web is needled onto the needle 32 in this area.
  • the two welding bars 11 and 12 move against one another, whereby two welding seams 21 and 22 are formed, between which the tubular film web is cross-separated by the knife 15. This situation is shown in Figure 5.
  • the device described above ensures that the bottom weld seams 22 have enough time through the use of the slotted tube 26 to cool down partially before they rest on the bottom seams 22 of the bag pieces which are already needled.
  • the use of the transfer plate 29 in the rotatable tube 26 ensures a perfect transfer of the leading hose piece from the separating device to the stacking station 4.
  • the strips 30 and 31 are provided, which must be present in particular if working with a blown air comb through which the film is discharged from the pair of feed rollers.
  • the strips 30 and 31 then prevent the occurrence of turbulence in the region of the tube 26.
  • the top guide plate 29 is bent downward on its side facing the welding device 2, so that the strip 30 rests on the transfer plate 29 even when the clamping jaw 25 is lowered.

Landscapes

  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP92116565A 1991-11-28 1992-09-28 Vorrichtung zum Abtrennen von mit Querschweissnähten versehenen Schlauchstücken von einer Bahn und zu deren Stapeln Expired - Lifetime EP0544078B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4139183 1991-11-28
DE4139183 1991-11-28
DE4214365 1992-04-30
DE4214365A DE4214365A1 (de) 1991-11-28 1992-04-30 Vorrichtung zum abtrennen von mit querschweissnaehten versehenen schlauchstuecken von einer bahn und zu deren stapeln

Publications (2)

Publication Number Publication Date
EP0544078A1 EP0544078A1 (de) 1993-06-02
EP0544078B1 true EP0544078B1 (de) 1996-01-03

Family

ID=25909583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116565A Expired - Lifetime EP0544078B1 (de) 1991-11-28 1992-09-28 Vorrichtung zum Abtrennen von mit Querschweissnähten versehenen Schlauchstücken von einer Bahn und zu deren Stapeln

Country Status (7)

Country Link
US (1) US5312317A (es)
EP (1) EP0544078B1 (es)
JP (1) JPH05245955A (es)
CA (1) CA2083857C (es)
DE (2) DE4214365A1 (es)
ES (1) ES2081540T3 (es)
FI (1) FI101211B (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1290812B1 (it) * 1997-03-24 1998-12-11 Elba Spa Dispositivo per favorire il corretto e libero impilamento di sacchetti saldati in una macchina di saldatura
DE19728371C1 (de) * 1997-07-03 1999-01-14 Lemo Maschb Gmbh Vorrichtung zum Querschweißtrennen und stapelweisen Sammeln und Verblocken von aus einer Kunststoffolienbahn hergestellten Beuteln, insbesondere Hemdchentragetaschen
US10717558B2 (en) * 2016-10-17 2020-07-21 Morrisette Paper Company, Inc. Machine and process for packaging unique items
CN111470124B (zh) * 2018-05-02 2021-11-23 新沂市中振电器科技有限公司 一种用于自动上包装带的机械手的控制方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB982593A (en) * 1962-03-02 1965-02-10 Leipzig Veb Druckmasch Werke Improvements in or relating to apparatus for the production of synthetic thermoplastic bags
FR1584567A (es) * 1968-06-26 1969-12-26
DE2746670C2 (de) * 1977-10-18 1984-07-19 Stiegler, Karl Heinz, 7000 Stuttgart Vorrichtung zum Stapeln von Beuteln
US4286907A (en) * 1979-09-17 1981-09-01 Gloucester Engineering Co., Inc. Grid extensions on a rotary stacker
DE3020009A1 (de) * 1980-05-24 1981-12-03 Hans 5216 Niederkassel Lehmacher Vorrichtung fuer die herstellung von beuteln aus einer kunststoffolien-schlauchbahn
DE3136619A1 (de) * 1981-09-15 1983-03-31 ELWA Plastic Maschinenbau GmbH, 5163 Langerwehe Maschine zum verschweissen des hinteren endes von schlauchfolienstuecken
DE3201170C1 (de) * 1982-01-16 1983-05-19 M. Lehmacher & Sohn Gmbh Maschinenfabrik, 5216 Niederkassel Vorrichtung zum Querschweissen und Trennen einer Kunststoffolien-Doppelbahn
JPS6341357A (ja) * 1986-08-05 1988-02-22 Nippon Furuuto Kk シ−ト状物の送り束ね方法
DE3704663C2 (de) * 1987-02-14 1993-10-14 Buschmann Albert Vorrichtung zum Stapeln von aus Kunststoffolien hergestellten Beuteln mit Bodennaht
FR2625945A1 (fr) * 1988-01-15 1989-07-21 Lagain Georges Dispositif d'empilage de sacs dans une installation de fabrication de sacs ou sachets, etc. en matiere thermoplastique
DE3823009A1 (de) * 1988-07-07 1990-01-11 Lehmacher & Sohn Masch Vorrichtung zum stapeln und gegebenenfalls verblocken von kunststoffbeuteln

Also Published As

Publication number Publication date
US5312317A (en) 1994-05-17
CA2083857C (en) 2001-10-09
EP0544078A1 (de) 1993-06-02
FI101211B1 (fi) 1998-05-15
FI925338A (fi) 1993-05-29
DE59204920D1 (de) 1996-02-15
ES2081540T3 (es) 1996-03-16
FI101211B (fi) 1998-05-15
DE4214365A1 (de) 1993-06-03
FI925338A0 (fi) 1992-11-25
CA2083857A1 (en) 1993-05-29
JPH05245955A (ja) 1993-09-24

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