EP0468932B1 - A device for the separation of bags or finished items, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film - Google Patents

A device for the separation of bags or finished items, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film Download PDF

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Publication number
EP0468932B1
EP0468932B1 EP91830065A EP91830065A EP0468932B1 EP 0468932 B1 EP0468932 B1 EP 0468932B1 EP 91830065 A EP91830065 A EP 91830065A EP 91830065 A EP91830065 A EP 91830065A EP 0468932 B1 EP0468932 B1 EP 0468932B1
Authority
EP
European Patent Office
Prior art keywords
separation
continuous strips
separation means
finished
bags
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
EP91830065A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0468932A1 (en
Inventor
Ermes Ollari
Francesco Ollari
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.)
Generatori Elettronici Alta Frequenza Geaf Srl
Original Assignee
Generatori Elettronici Alta Frequenza Geaf Srl
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 Generatori Elettronici Alta Frequenza Geaf Srl filed Critical Generatori Elettronici Alta Frequenza Geaf Srl
Publication of EP0468932A1 publication Critical patent/EP0468932A1/en
Application granted granted Critical
Publication of EP0468932B1 publication Critical patent/EP0468932B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1827—Means for removing cut-out material or waste by tearing

Definitions

  • the present invention relates to a device for separating bags or finished items generally, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film.
  • the finished bags or items are pre-cut, generally around their entire peripheral outline, and the conventional method of separation is simply for an operator to apply pressure to the pre-cut outline (a weakened area along which the plastic material can be torn easily and precisely) and detach the bag or item forcibly by hand.
  • the prior art also embraces automatic systems for bringing about the separation in question, using intricate gripper mechanisms by means of which to lay hold on the edge of the bags advancing along the conveyor and detach them forcibly from the remainder of the continuous strips of film.
  • US-A-4,096,981 shows an apparatus according to the preamble of claim 1, for use in stripping a continuous web from at least along a portion of the marginal edge of a body comprising deflecting means pivotally connected to supporting means for assisting in directing the leading edge of the advanced continuous web vertically so as to facilitate a stripping thereof.
  • the apparatus also comprises stripping means including a pair of cooperating rollers for grabbing therebetween the vertically deflected continuous web and stripping it from the body.
  • Said apparatus does not completely solve the mentioned drawbacks, it is still rather complex and effective only for obtaining finished items of rigid type from a continuous web.
  • the object of the present invention is to overcome the drawbacks mentioned above, and in particular to enable the separation of pre-cut bags or comparable items from continuous plastic film material using an automatic device that is simple in construction and easily adjusted, and thus affords a saving in capital outlay and a reduction in the set-up time required for a given end-product.
  • a further object of the invention is to provide a device able substantially to match the output rate of a supply machine, in particular thermal or high frequency welding equipment, and capable therefore of being integrated into an existing line without causing any fall in productivity.
  • 1 denotes a table consisting in a plurality of wires 3 upon and along which to support and feed at least one continuous strip of heat-sealable material denoted 2.
  • Such material is utilized in the production of bags or other comparable finished items fashioned by thermal or high frequency welding executed along pre-cut guide lines coinciding with the peripheral outline of the item.
  • the cylinder 4 and the relative rod 5 constitute partial separation means by which to restrain the continuous strip of material momentarily as it passes along the table 1 and thus bring about a partial separation of each finished bag 13.
  • the strip is fed through a gap between two rollers 11 and 10 disposed substantially at 45° to the path followed by the strip along the table.
  • rollers are positioned in such a manner that the pneumatic cylinder 4, or whatever partial separation means, will be encompassed within the 45° angle described by the axes of the rollers and the axis of the path followed by the strip.
  • the first roller 11 encountered revolves freely, whereas the second roller 10 is live, power driven by means not shown in the drawings, and serves to transmit motion to a looped conveyor belt 12 along which the bags run out.
  • rollers 11 and 10 serve to divert the path of the strip or strips through 90° in a plane parallel to the table 1 and indeed substantially coinciding therewith, given that the intervening distance is equal to no more than the diameter of the rollers.
  • Each bag 13 separated from the stip 2 passes under a second pressure wheel 20 and along the conveyor belt 12 to the runout.
  • the film material from which the finished bags are separated now reduced to one or more offcuts 15, passes from between the two rollers 11 and 10 and is drawn clear by a pair of pinch rollers 14, one of which power driven.
  • the angled rollers 11 and 10, pressure wheels 9 and 20 and pinch rollers 14 thus constitute separation means for completing the separation of the finished bags from the remainder, termed offcuts, of the continuous strips of film material 2 and directing them onto a conveyor belt for collection at the runout of the device, and for distancing waste or offcut film 15 from the device for disposal.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP91830065A 1990-07-09 1991-02-27 A device for the separation of bags or finished items, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film Expired - Lifetime EP0468932B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT4252190 1990-07-09
IT42521A IT1242395B (it) 1990-07-09 1990-07-09 Dispositivo per il distacco di buste o pezzi finiti preintagliati ricavati, con procedimento di saldatura termica o ad alta frequenza, da uno o piu' films continui di materiale plastico termosaldabile

Publications (2)

Publication Number Publication Date
EP0468932A1 EP0468932A1 (en) 1992-01-29
EP0468932B1 true EP0468932B1 (en) 1995-02-15

Family

ID=11254288

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830065A Expired - Lifetime EP0468932B1 (en) 1990-07-09 1991-02-27 A device for the separation of bags or finished items, pre-cut and formed by a thermal or high frequency welding process, from one or more continuous strips of heat-sealable plastic film

Country Status (5)

Country Link
EP (1) EP0468932B1 (da)
AT (1) ATE118395T1 (da)
DE (1) DE69107365T2 (da)
DK (1) DK0468932T3 (da)
IT (1) IT1242395B (da)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3619228B2 (ja) * 2002-11-12 2005-02-09 トタニ技研工業株式会社 製袋機
CN104044184B (zh) * 2013-03-12 2015-09-30 昆山巨闳机械科技有限公司 含浸玻璃纤维布无屑分条裁剪机
CN105479539B (zh) * 2015-12-25 2018-02-09 建新赵氏集团有限公司 一种车窗导槽密封条的切割装置
CN106078869B (zh) * 2016-06-30 2017-10-24 浙江汇锋薄膜科技有限公司 一种改进的装饰膜切割机
CN107186783B (zh) * 2017-07-17 2019-02-19 刘勇 一种广告设计裁切装置
CN110861150B (zh) * 2019-11-19 2021-08-17 范武 一种气模加工用裁剪废料收集设备
CN112519318B (zh) * 2020-11-30 2023-03-14 重庆鼎盛印务股份有限公司 耐高温蒸煮袋的制造工艺

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789640A (en) * 1953-04-09 1957-04-23 Johnson & Johnson Machine and process for cutting and conveying small patches
US3679116A (en) * 1971-02-01 1972-07-25 Eastman Kodak Co Web turning and guiding apparatus
US4096981A (en) * 1977-03-18 1978-06-27 Wilson Jones Company Apparatus for stripping a continuous web of material from the marginal edge of a body
US4346855A (en) * 1980-07-24 1982-08-31 Elizabeth S. Biggar Stripping method and apparatus for the processing of a continuous laminated web
US4467948A (en) * 1982-07-29 1984-08-28 Deslauriers Clovis F Waste stripper

Also Published As

Publication number Publication date
DE69107365D1 (de) 1995-03-23
DK0468932T3 (da) 1995-07-17
IT9042521A0 (it) 1990-07-09
IT9042521A1 (it) 1992-01-09
EP0468932A1 (en) 1992-01-29
ATE118395T1 (de) 1995-03-15
IT1242395B (it) 1994-03-04
DE69107365T2 (de) 1995-08-24

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