EP0215269B1 - Vorrichtung zum Herstellen von Beuteln - Google Patents

Vorrichtung zum Herstellen von Beuteln Download PDF

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Publication number
EP0215269B1
EP0215269B1 EP86110779A EP86110779A EP0215269B1 EP 0215269 B1 EP0215269 B1 EP 0215269B1 EP 86110779 A EP86110779 A EP 86110779A EP 86110779 A EP86110779 A EP 86110779A EP 0215269 B1 EP0215269 B1 EP 0215269B1
Authority
EP
European Patent Office
Prior art keywords
welding
web
bar
bars
knife
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
EP86110779A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0215269A1 (de
Inventor
Fritz Ing. Grad. Achelpohl
Helmut Simon
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 EP0215269A1 publication Critical patent/EP0215269A1/de
Application granted granted Critical
Publication of EP0215269B1 publication Critical patent/EP0215269B1/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
    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • 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
    • 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
    • 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]
    • 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
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]

Definitions

  • the invention relates to a device for producing bags from a double-layer web of thermoplastic material with the web intermittently by a bag length between welding jaws, of which the upper one is provided with a lifting and lowering drive, feed rollers and one below the web and parallel to the lower welding bar next to this guided cutting knife, which is attached to an endless traction device running over rollers and in the cutting area of which the web can be pressed down by the upper welding bar.
  • the lower welding bar is also movably mounted and can be pressed down into the cutting plane against spring force by the upper one, which necessitates additional guide means for the lower welding bar.
  • the object of the invention is therefore to provide a device of the type specified in the introduction, in which the lower welding bar can also be held fixed to the frame without a collision of the web with the cutting knife being possible outside the welding cycles.
  • this object is achieved in that, for feeding the web, the preferred rollers arranged directly in front of the welding bars are provided in rows of rows of comb-like upper and lower guide rods or blow air tubes which pass through in annular grooves and which between them are the web between the opened welding bars in an area above the knife path Pass through the plane, that the lower welding bar is fixed to the frame and that continuously rotating knives pass through the plane of the web defined by the lower welding bar during the execution of the transverse weld seam and that the lower row of guide rods or blow air tubes are provided pivoting devices in the direction of the lower welding bar, which are operated simultaneously with the lowering of the upper welding bar.
  • the rows of guide rods or blow air tubes which serve to guide the web prevent the cross-guided knife from damaging the web outside the welding cycles, during which the welding bars are lifted apart.
  • the upper welding bar presses the web into the cutting plane, so that the cross-guided knife can cut through the web clamped between the welding bars.
  • a sharp-edged pulling off of the web over the lower row of guide rods or blow air tubes is avoided by pivoting it towards the lower welding bar during the welding cycle. This avoids damage to the web or grooves pressed into it.
  • the knife which is preferably attached to a toothed belt or a chain, is driven relative to the drive performing the welding cycles in such a way that the cutting knife is located outside the upper run of the traction means during the lowering of the upper welding bar, so that the cutting knife cannot engage the web, so as long as it is not stuck between the welding bars.
  • Clamping or second welding bars parallel to the welding bars can also be provided, between which the knife path runs, the lower clamping or second welding bar lying in the plane of the lower welding bar.
  • the cross-cut is carried out on a narrow path section which lies between two welding bars or between a welding bar and a pair of clamping bars.
  • the upper run of the traction means is supported on a convexly curved support or a convexly curved slide or roller track, so that the knife executes a transverse movement relative to the plane of the track.
  • a lever For intermittent lifting and lowering of the upper welding and / or clamping bar, a lever can be provided from a rocker-like lever and pivoted by a cam or eccentric drive via a push rod and a coupling, the lower row of guide rods or blow air tubes via a coupling rod connected to the lever is pivotable.
  • Two side frames are connected to one another by two cross members 2 and 3 and by a fixed support 4.
  • a motor 6 is screwed on, which serves to drive the drive disk 7, which is firmly wedged on the shaft 8, which in turn is rotatably mounted in the cross member 3 at its end removed from the motor 6 .
  • a further shaft 9 is rotatably mounted above the shaft 8 both in the cross member 2 and in the fixed support 4.
  • a pulley 10 is supported on this shaft 9, which, together with the drive pulley 7, is wrapped by a toothed belt 11.
  • the shaft 9 protrudes with its end facing away from the cross member 2 from the fixed support 4, a deflection disk 12 being firmly connected to the projecting end.
  • the fixed carrier 4 has a further shaft, not shown, which carries a further deflection disk 13. Both deflection sheaves ben 12 and 13 are wrapped in a carrier tape 14 (see FIG. 2), the upper run of the carrier tape 14 being supported by a curved bar 15. In a manner not shown, this curved beam 15 is screwed to the fixed support 4.
  • the curved bar 15 has the effect that the separating knife 16, which is firmly connected to the carrier tape 14, has an arcuate course in the region of the upper run of the tape 14, so that the knife edge does not constantly cut with one and the same point, which would result in high knife wear.
  • FIG. 1 It can be seen from FIG. 1 that 16 counter jaws 17 and 18 are provided on both sides of the separating knife, the counter jaw 17 being held on the carrier 4 and the counter jaw 18 on the beam 15.
  • a movable welding jaw 19 and a movable clamping bar 20 interact with the two counter jaws 17 and 18.
  • Welding jaws 19 as well as clamping bars 20 are slidably placed on a pull rod 21 and are held by springs 22 and 23 in the rest position, i.e. in the raised position, pressed against the clamping ring 24 firmly connected to the pull rod 21.
  • the pull rod 21 itself is held by a machine-fixed guide 26 and is articulated to a rocker arm 27 via a bracket 25. This rocker arm is supported on a shaft 28 and can be cyclically raised by a cam 29 against the force of a tension spring 30.
  • an adjustable coupling 31 is articulated at one end, the other end of which engages a lever 32 which is freely rotatable on the axis 33 of the lower feed roller 34.
  • the lower feed roller 34 is provided with circumferential grooves, not shown, through which a blowing air rake protrudes, which is attached to the lever 32.
  • the upper feed roller 35 also has circumferential grooves, not shown, through which an upper blowing air rake 36 projects.
  • the upper blowing air rake 36 is not movable and is held by the side frames.
  • the position of the machine shown in Fig. 1 shows the position in which a section is being cut from an endless web, i.e.
  • the pull rod 21 is lowered, the clamping jaw 20 presses the film against the separating jaw 18, the welding bar 19 presses against the counter jaw 17 and welds the two layers of a film tube. It can be seen from FIG. 1 that the rotating cutting knife 16 cuts through the tubular web in this position.
  • the pull rod 21 is pressed upward by the cam plate 29, so that the clamping ring 24 presses against the clamping bar 20 and lifts it together with the welding jaw 19 so far from the counter jaws 17 and 18 that the connection thereafter advanced film tube no longer comes into contact with the knife 16.
  • the adjustable coupling 31 is pulled downward, so that the lower rake 37 assumes the raised position shown with dashed lines, whereby the foil is raised for better guidance and guided over the rotating knife 16.
  • the pivoted lower rake 37 allows the film web to be pressed down into the knife area without the risk of the film being damaged by the front edge of the rake as seen in the transport direction.
  • the blown air rakes 36 and 37 are used in a known manner to discharge the advanced tubular film end into the opened welding station.

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  • Making Paper Articles (AREA)
EP86110779A 1985-09-03 1986-08-04 Vorrichtung zum Herstellen von Beuteln Expired EP0215269B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3531457 1985-09-03
DE19853531457 DE3531457A1 (de) 1985-09-03 1985-09-03 Vorrichtung zum herstellen von beuteln

Publications (2)

Publication Number Publication Date
EP0215269A1 EP0215269A1 (de) 1987-03-25
EP0215269B1 true EP0215269B1 (de) 1989-01-11

Family

ID=6280043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110779A Expired EP0215269B1 (de) 1985-09-03 1986-08-04 Vorrichtung zum Herstellen von Beuteln

Country Status (5)

Country Link
US (1) US4734088A (enrdf_load_stackoverflow)
EP (1) EP0215269B1 (enrdf_load_stackoverflow)
CA (1) CA1264421A (enrdf_load_stackoverflow)
DE (1) DE3531457A1 (enrdf_load_stackoverflow)
DK (1) DK160686C (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2597401B1 (fr) * 1986-04-18 1988-08-05 Lagain Georges Installation de fabrication et d'empilage de sacs, sachets, etc. en matiere thermoplastique
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
CN114714667B (zh) * 2021-09-18 2024-07-26 颖态智能技术(上海)有限公司 一种制袋设备及其预拉带装置
CN119160469A (zh) * 2024-10-10 2024-12-20 广州绿葆网络发展有限公司 二合一出袋装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL126949C (enrdf_load_stackoverflow) * 1967-04-14 1967-04-14
FR2031713A5 (enrdf_load_stackoverflow) * 1969-02-04 1970-11-20 Lagain Georges
JPS51744B1 (enrdf_load_stackoverflow) * 1970-04-30 1976-01-10
DE2556968C2 (de) * 1975-12-18 1985-04-18 Hans 5216 Niederkassel Lehmacher Maschine zum Herstellen von Beuteln, Säcken oder dergleichen Verpackungen aus einer thermoplastischen Kunststoffolienbahn
US4230029A (en) * 1978-10-26 1980-10-28 Gloucester Engineering Co., Inc. Cutting assembly useful in bag machines
DE7925119U1 (de) * 1979-09-05 1981-03-12 Gartemann & Hollmann Gmbh, 4800 Bielefeld Vorrichtung zum querschneiden von papierbahnen
DE3100722C2 (de) * 1981-01-13 1983-09-01 Stiegler, Karl Heinz, 7000 Stuttgart Vorrichtung zum Herstellen von Kunststoffbeuteln
US4613320A (en) * 1983-10-20 1986-09-23 Automated Packaging Systems, Inc. Container forming apparatus

Also Published As

Publication number Publication date
CA1264421A (en) 1990-01-16
US4734088A (en) 1988-03-29
DK419986A (da) 1987-03-04
DK160686B (da) 1991-04-08
DE3531457C2 (enrdf_load_stackoverflow) 1990-03-29
EP0215269A1 (de) 1987-03-25
DK419986D0 (da) 1986-09-02
DK160686C (da) 1991-09-23
DE3531457A1 (de) 1987-03-12

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