EP0084880B1 - Dispositif pour le découpage transversal de bandes - Google Patents

Dispositif pour le découpage transversal de bandes Download PDF

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Publication number
EP0084880B1
EP0084880B1 EP83100595A EP83100595A EP0084880B1 EP 0084880 B1 EP0084880 B1 EP 0084880B1 EP 83100595 A EP83100595 A EP 83100595A EP 83100595 A EP83100595 A EP 83100595A EP 0084880 B1 EP0084880 B1 EP 0084880B1
Authority
EP
European Patent Office
Prior art keywords
bar
cutting knife
backpressure
pressure bar
needles
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
EP83100595A
Other languages
German (de)
English (en)
Other versions
EP0084880A2 (fr
EP0084880A3 (en
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 EP0084880A2 publication Critical patent/EP0084880A2/fr
Publication of EP0084880A3 publication Critical patent/EP0084880A3/de
Application granted granted Critical
Publication of EP0084880B1 publication Critical patent/EP0084880B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • 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
    • 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
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1054—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing and simultaneously bonding [e.g., cut-seaming]
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]

Definitions

  • the invention relates to a device for cross-cutting tubular webs of thermoplastic material in the production of bags and for stacking the bags, with a pair of preferred rollers which cyclically advance the tubular web by a length of a web section, a heated cross-cutting knife with counter-pressure bar and arranged parallel to a cross-welding device pressure bar lowering onto the separate bag or bags.
  • the front end of a tubular web is stretched out by a blow air stream generated by blow air nozzles arranged on both sides thereof by lowering a cross-welding bar and a cross-cutting knife, the front web section, each forming a bag, is cut off and, in addition to the cut, a cross-weld seam is attached to the front end of the web, which forms the bottom seam of the bag cut off in the following cycle.
  • the cross-cutting knives are also heated due to their proximity to the heated sealing bar, when cutting multilayer foils, for example a tubular web, the foil webs may become blocked on the cut surface, which is particularly undesirable if the cut causes the opening edges of a bag should be formed. Furthermore, the cut surfaces of the film web can stick to the cutting knife, which can result in malfunctions.
  • the object of the invention is therefore to improve a device of the type specified at the outset (according to DE-A-2 254 448) in such a way that the cut surfaces of multi-layered webs, for example tubular webs, cannot block with one another due to the separating cut and that gluing continues of cutting surfaces on the cutting knife is avoided.
  • this object is achieved in that two pressure bars, which can be lowered and raised on the separate section or sections, are provided in parallel, of which the front end in the advancing direction, the web end carried between the cutting knife and the counter pressure bar, against a base in a plane lower than the counter pressure bar clamped and the pressure bar arranged between the cutting knife and the front pressure bar clamps the web clamped between the pair of preferred rollers and the front pressure bar before the heated cutting knife cuts through them, and that below the pressure bar tensioning the web a needle row is arranged on a carrier on which the with corresponding cutouts or holes, the section edges needles after the separating cut.
  • the first pressure bar lowers first, so that the web section on which the transverse welding and cross cutting takes place between the pair of preferred rollers and the Print bar is clamped. If the second pressure bar is now lowered just in front of the counter pressure bar, the web is stretched elastically, since the counter pressure bar forms a step with the lower level in which the front web end is clamped. If the heated knife is now provided with a cross section by the heated knife, the cut surfaces snap away from the heated knife.
  • the upper layer of the web first comes off the cutting knife and then the lower one. Since the cut surfaces of these strips separate from the cutting knife one after the other when cutting multilayer strips, these are also moved relative to one another and pulled away from one another, so that sticking or blocking of these cut surfaces is precluded.
  • the elastic tension additionally leads to the rear ends of the bags or sections being hit smoothly on the stack being formed.
  • the pressure bar that excites the web after it is clamped can also simultaneously function as a slider needling the section edges onto a row of needles for fixing them.
  • the preferred rollers 1 and 2 advance the plastic tubular web 3 in cycles by one bag length and clamp them firmly between them. Blown air nozzles, not shown, can be provided for stretching the front end of the web. If a sufficiently long piece of tubular web has now been advanced by the preferred rollers 1 and 2, the never existing from the pressure bar 4 lowers first derhalter on a counter bearing, so that the web is clamped in the manner shown in FIG. 2 between the preferred rollers 1, 2 on the one hand and the pressure bar 4 and the counter bearing 5. Immediately thereafter, the pressure bar 6 moves from the position shown in FIG. 1 into the position shown in FIG. 2 and presses the web downward so strongly that the web lies with tension over the groove 7 of the counter pressure bar 8. The web 3 is then cut by lowering the upper separating knife holder 9 with the transverse cutting knife 10 attached to it, and simultaneously or immediately thereafter the bottom seam is formed by the permanently heated pair of welding jaws 11.
  • the pressure bar 6 moves into the position shown in FIG. 3 and thereby presses the bag separated from the web onto the support bar 13 connected to the counter pressure bar 8.
  • the welding jaws 11 are still closed and the transverse welding seam is formed.
  • the support bar 13 has through holes through which needles 12 protrude upward, so that the separated bag is needled at the same time.
  • the needles 12 are firmly connected to the angled profile of the counter bearing 5.
  • the pressure bar 6 also has bores so that the individual bags can be pushed onto the needles 12 against the support bar 13.
  • the indentation 14 under the groove 7 in the counter pressure bar 8 serves for the compression-free storage of the bag edges.
  • the individual elements then move back from the position shown in FIG. 3 to the position shown in FIG. 1, so that the web 3 can be advanced by a further section length, if necessary with the aid of blowing air nozzles, from the preferred rollers 1, 2 .
  • the counter bearing 5 moves down, the needles 12 being pulled out of the stack of bags.
  • the tipper roller 15, which is controlled by the piston-cylinder unit 16 lowers onto the conveyor belt 17, which is then switched on for the removal of the stacks 18 formed.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (4)

1. Dispositif pour le découpage transversal de bandes en matière synthétique thermoplastique lors de la fabrication de sachets et pour l'empilage des sachets, comportant une paire de rouleaux d'avancement (1) tirant la bande en cadence d'une longueur de section, un couteau transversal (10) chauffé disposé en parallèle à la direction de soudure transversale (11) et ayant une barre de contre-pression (3) et une barre de pression (4) s'abaissant sur le ou les sachets séparés, caractérisé en ce que deux barres de pression (4, 6) pouvant être abaissées et relevées sur la ou les sections (18) séparées sont prévues parallèlement l'une par rapport à l'autre dont celle se trouvant en aval (4) par rapport à la direction de l'avancement fixe l'extrémité de la bande avancée entre le couteau (10) et la barre de contre-pression (8) contre une base (5) se trouvant dans un plan plus bas que la barre de contre-pression (8) et que la barre de pression (6) disposée entre le couteau (10) et la barre de pression avant (4) tend la bande serrée entre la paire de rouleaux d'avancement (1, 2) et la barre de pression avant (4) avant que le couteau chauffé (10) ne coupe la bande et qu'au-dessous de la barre de pression (6) tendant la bande (3) une série d'aiguilles (12) est disposée sur un support (5) sur lesquelles la barre de pression (6) pourvue des découpes aux trous correspondants épingle les bords de section après la séparation.
2. Dispositif selon la revendication 1, caractérisé en ce que sous la barre de contre-pression (8) du couteau (10) un retrait (14) est prévu pour déposer sans les fouler les bords de section.
3. Dispositif selon les revendications 1 ou 2, caractérisé en ce que la barre de contre-pression (8) est pourvue d'une rainure (7) pour insérer le couteau (10).
4. Dispositif selon les revendications 1 à 3, caractérisé en ce que le support d'aiguilles (5) est formé de manière à pouvoir être abaissé et que les aiguilles (12) traversent une barre de dépôt (13) raccordée à la barre de contre-pression.
EP83100595A 1982-01-25 1983-01-24 Dispositif pour le découpage transversal de bandes Expired EP0084880B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3202272 1982-01-25
DE3202272 1982-01-25
DE19823204492 DE3204492A1 (de) 1982-01-25 1982-02-10 Vorrichtung zum querschneiden von bahnen
DE3204492 1982-02-10

Publications (3)

Publication Number Publication Date
EP0084880A2 EP0084880A2 (fr) 1983-08-03
EP0084880A3 EP0084880A3 (en) 1985-01-30
EP0084880B1 true EP0084880B1 (fr) 1988-06-01

Family

ID=25799072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100595A Expired EP0084880B1 (fr) 1982-01-25 1983-01-24 Dispositif pour le découpage transversal de bandes

Country Status (7)

Country Link
US (1) US4490207A (fr)
EP (1) EP0084880B1 (fr)
BR (1) BR8300138A (fr)
CA (1) CA1194401A (fr)
DE (1) DE3204492A1 (fr)
DK (1) DK159676C (fr)
ES (1) ES8402526A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566741B1 (fr) * 1984-07-02 1987-08-07 Lagain Georges Dispositif de coupe et de rangement de sacs en matiere plastique a la sortie d'une machine pour la fabrication de sacs
FR2592333A1 (fr) * 1986-01-02 1987-07-03 Lagain Georges Installation de fabrication et d'empilage de sacs, sachets, etc. en matiere thermoplastique
FR2597401B1 (fr) * 1986-04-18 1988-08-05 Lagain Georges Installation de fabrication et d'empilage de sacs, sachets, etc. en matiere thermoplastique
DE3623004A1 (de) * 1986-07-09 1988-01-28 Wolfgang Mohr Planschneidemaschine
IT1213658B (it) * 1987-07-28 1989-12-29 Colin Luis Dispositivo di saldatura,taglio, prelievo e accumulo in macchine per la fabbricazione di sacchetti in materiale plastico
FR2625946A1 (fr) * 1988-01-15 1989-07-21 Lagain Georges Installation de fabrication et d'empilage de sacs, sachets, etc. en matiere thermoplastique
DE3936515A1 (de) * 1989-11-02 1991-05-08 Windmoeller & Hoelscher Vorrichtung zum querschneiden und querschweissen von bahnen
DE4009655A1 (de) * 1990-03-26 1991-10-02 Windmoeller & Hoelscher Verfahren und vorrichtung zur bildung von durch klammern zusammengehaltenen beutelstapeln
DE4029440A1 (de) * 1990-09-17 1992-03-19 Windmoeller & Hoelscher Verfahren zum herstellen von kunststoffbeuteln
US6572724B1 (en) * 1992-03-10 2003-06-03 Gunther E. Asterlin Method for producing an improved seamless bag by heat sealing
EP0586642B1 (fr) * 1992-03-24 1996-06-19 Ulrich Steinemann Ag Procede, dispositif et installation pour la fabrication de stratifies
CN1075034C (zh) * 1994-10-07 2001-11-21 四国化工机株式会社 狭带连接装置
DE19537833C1 (de) * 1995-10-11 1996-10-02 Bosch Gmbh Robert Quernahtsiegeleinrichtung an einer Schlauchbeutelmaschine
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
IT1391710B1 (it) * 2008-09-12 2012-01-27 Ciemme Group S R L Metodo e macchina per il taglio di un film plastico
US8776857B1 (en) 2013-02-04 2014-07-15 Computype, Inc. Label application devices
CN112895600A (zh) * 2021-02-23 2021-06-04 重庆鼎盛印务股份有限公司 包装袋生产用分切装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1192392B (de) * 1957-07-17 1965-05-06 Albert E Luetzow Verfahren und Vorrichtung zum thermischen Trennen mehrerer flach aufeinanderliegender Bahnen aus thermoplastischem Material
US3384528A (en) * 1964-01-14 1968-05-21 Lehmacher Michael Apparatus for severing and welding of thermoplastic tubing film
DE1479421B1 (de) * 1964-06-03 1973-05-24 Hans Lehmacher Vorrichtung zum Schweissen und Trennen von thermoplastischen Kunststoff-Schlaeuchen oder zusammengelegten Kunststoff-Folien
DE1704168B2 (de) * 1967-03-18 1973-04-26 Lehmacher, Hans, 5215 Mondorf Vorrichtung zum querabtrennen und querschweissen von doppelt liegenden bahnen oder einem schlauch aus thermoplastischer kunststoffolie zum herstellen von beuteln, saecken oder dgl
US3810420A (en) * 1972-04-11 1974-05-14 Lagain G Machines for the manufacture of plastic bags
DE2236524A1 (de) * 1972-07-26 1974-02-14 Hans Lehmacher Vorrichtung zum herstellen von beuteln oder dergleichen verpackungen aus thermoplastischer kunststoffolie und deren stapelung
FR2194154A5 (fr) * 1972-07-28 1974-02-22 Lagain Georges
DE2254448A1 (de) * 1972-11-07 1974-05-22 Windmoeller & Hoelscher Verfahren und vorrichtung zur herstellung von beutelblocks aus thermoplastischem kunststoff
DE2354974A1 (de) * 1973-11-02 1975-05-07 Hans Lehmacher Verfahren und vorrichtung zum stapeln und ablegen von beuteln
DE2358281A1 (de) * 1973-11-22 1975-06-05 Windmoeller & Hoelscher Vorrichtung zur herstellung von beutelblocks aus thermoplastischer kunststoffolie
US3992981A (en) * 1975-11-19 1976-11-23 Fmc Corporation Web stripping apparatus
BE862009A (fr) * 1977-12-19 1978-04-14 Printex Procede pour la fabrication de liasses de sacs et machine pour la mise en oeuvre de ce procede
DE2833232C2 (de) * 1978-07-28 1983-09-08 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Herstellen von Hemdchenbeuteln aus einer mit Seitenfalten versehenen Kunststoffschlauchfolienbahn
DE2833236C2 (de) * 1978-07-28 1982-11-25 Windmöller & Hölscher, 4540 Lengerich Vorrichtung zum Herstellen und Stapeln von Kunststoffbeuteln
DE2940399C2 (de) * 1979-10-05 1985-10-03 Hans 5216 Niederkassel Lehmacher Vorrichtung zum Stapeln von Kunststoffbeuteln

Also Published As

Publication number Publication date
ES519215A0 (es) 1984-02-16
DK29083A (da) 1983-07-26
DE3204492A1 (de) 1983-08-18
US4490207A (en) 1984-12-25
DE3204492C2 (fr) 1993-03-18
ES8402526A1 (es) 1984-02-16
BR8300138A (pt) 1983-10-04
DK29083D0 (da) 1983-01-25
EP0084880A2 (fr) 1983-08-03
DK159676C (da) 1991-04-29
DK159676B (da) 1990-11-19
CA1194401A (fr) 1985-10-01
EP0084880A3 (en) 1985-01-30

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