EP0513708B1 - Method for forming element-free spaces in slide fastener chain - Google Patents

Method for forming element-free spaces in slide fastener chain Download PDF

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Publication number
EP0513708B1
EP0513708B1 EP92107882A EP92107882A EP0513708B1 EP 0513708 B1 EP0513708 B1 EP 0513708B1 EP 92107882 A EP92107882 A EP 92107882A EP 92107882 A EP92107882 A EP 92107882A EP 0513708 B1 EP0513708 B1 EP 0513708B1
Authority
EP
European Patent Office
Prior art keywords
coupling elements
legs
cut legs
cut
slide fastener
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
EP92107882A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0513708A1 (en
Inventor
Masao Matsumoto
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.)
YKK Corp
Original Assignee
YKK Corp
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Filing date
Publication date
Application filed by YKK Corp filed Critical YKK Corp
Publication of EP0513708A1 publication Critical patent/EP0513708A1/en
Application granted granted Critical
Publication of EP0513708B1 publication Critical patent/EP0513708B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
    • A44B19/58—Removing interlocking members to produce gaps

Definitions

  • This invention relates to a method of removing coupling elements to form element-free space sections in a slide fastener chain including a pair of rows of interengaged discrete coupling elements mounted on confronting edges of a pair of fastener tapes.
  • the conventional method of forming element-free space sections in a slide fastener chain provided with synthetic resin coupling elements is disclosed for example, in JP, U no.55-109410 (Japanese unexamined utility Model Publication).
  • JP Japanese unexamined utility Model Publication
  • the method of forming space sections free of coupling elements in a slide fastener chain comprising the steps of putting the slide fastener chain on a die provided with a through hole of the element width at the center position, lowering a punch provided with two steps on side faces from an upward position toward heads of coupling elements to punch the heads, and further lowering the punch to catch and remove legs left in the fastener tape by the punch step.
  • the above-mentioned element-free space section forming method suffers from the drawbacks that since the punch is lowered to punch the heads of the coupling elements by the punch and further lowered to catch and remove the remaining cut legs left by the punching process, the stringer cores of the fastener tapes were readily damaged and chain crack was sometimes caused, and that a large force was required in order to punch and remove legs at one time.
  • a method for forming element-free space sections in a slide fastener chain comprising the steps of, cutting heads of interengaged discrete coupling elements at space sections of the slide fastener chain provided with coupling elements by use of a punch and cutters to separate each head from one leg of forked legs of the individual coupling element, pushing up the heads of the coupling elements from the cutting side in the direction orthogonal to fastener tape faces by a knock-out rod to remove the other leg and the heads of the coupling elements from the fastener tapes, and gripping the cut legs remaining on the fastener tapes by grippers to draw-out and remove the cut legs in the direction orthogonal to the fastener tape faces.
  • an other method for forming element-free space sections in a slide fastener chain comprising the steps of, gripping only the cut legs at both side ends of space sections by grippers to draw-out and remove the cut legs of both side ends in the direction orthogonal to the fastener tape faces, and scraping off the remaining cut legs by means of a rotary cutter and a rotary tumbler for leading the space sections toward the rotary cutter to remove the cut legs from the fastener tapes.
  • the heads and the cut legs of the coupling elements are respectively removed in the different processes. Then, the heads and the cut legs of the coupling elements are respectively drawn-out in the direction reverse to the direction of permeating a molten coupling element into the fastener tapes. Therefore, in this method, the heads and the cut legs of the coupling elements can be easily removed by a small force without damaging the fastener tapes and without causing the chain crack to form the element-free space sections efficiently.
  • the cut legs In removing the cut legs, since the cut legs being one of principal parts are removed by means of a rotary cutter and a rotary tumbler after the cut legs are removed in the both side ends of the space sections, the cut legs can be efficiently removed without requirement of fine adjustment of the rotary cutter and the rotary tumbler and without damaging the remaining coupling elements.
  • FIG. 1 there is shown an apparatus for carrying out a space section forming method of this invention comprising a coupling element punching means 10 , a first coupling element leg removing means 20 ,and a second coupling element leg removing means 30.
  • a slide fastener chain 1 is guided by a pair of right and left chain guides 14.
  • the transfer of the fastener chain is stopped and pressure pads 15, 15 are ascended to the chain guides 14.
  • space sections 9 of fastener tapes 8 are held between the chain guides 14.
  • the heads 3 of the coupling elements 2 are pressed by means of a descending punch 11 and a pair of ascending cutters 12, 12 to cut lower forked legs 7 of the coupling elements 2 as shown in FIG. 3.
  • the cut head 6 of the individual coupling element 2 is held between the punch 11 and a knock-out rod 13 and ascended to remove the heads 3 and the upper legs of the coupling elements.
  • the knock-out rod 13 has the same length as a space section 9 and disposed between the cutters 12.
  • the knock-out rod 13 is ascended to remove and discharge the heads 6 toward the outside as shown in FIG. 4.
  • the slide fastener chain 1 is transferred into the first coupling element leg removing means 20 of the following process at the state that the cut legs are remained in stringer cores 8 as shown in FIG. 8.
  • FIG. 5 and FIG. 6 show the state for removing the cut legs 5 disposed in the both side ends of the space section 9 in the first coupling element leg removing means 20.
  • a chain guide 16 When the slide fastener chain 1 transferred from the coupling element punching means 10 being guided by a chain guide 16 reaches to the first coupling element leg removing means 20, it is stopped and a space section determining member 21 descends from the upward position to carry out the positioning of the slide fastener chain 1, as shown in FIG. 5.
  • the chain guide 16 is disposed contacting the back face of the slide fastener chain 1 and is provided with a pair of apertures 24, 24 at the position corresponding to the both ends of the space section.
  • a center guide 22 is set under the chain guide 16 and is ascended through working apertures 24 as shown in FIG.
  • the second removing means 30 serves to scrape off and remove all of remaining cut legs 4 by means of a rotary cutter 31 and a rotary tumbler 33 as shown in FIG. 1 and FIG. 7.
  • the rotary tumbler 33 has the same elliptic shape as the conventional construction and is provided with a circular detector 36 for space section terminal which is always urged outwardly by a spring 34.
  • the slide fastener chain 1 which is processed in the first coupling element removing means 20, is always moved and guided along the space section terminal detector 36.
  • the space section terminal detector 36 is projected to the space section by the spring 34 as shown in FIG. 7, so that a tip stopper 35 is contacted with the heads of the coupling elements.
  • a notch (not shown) for preventing the rotation of the rotary tumbler 33 by a pulling force of the slide fastener chain 1 is released to rotate the rotary tumbler 34, so that the slide fastener chain 1 approaches to the rotary cutter 31.
  • the remaining cut legs 4 are scraped off and removed by the blades 32 of the rotary cutter 31 as shown in FIG. 10. Since the cut legs 5 at the both side ends of the space section 9 are pre-removed from the slide fastener chain 1, the cut legs 4 are easily removed without requirement of fine adjustment and without damaging the coupling elements 2 arranged adjacent to the space section.
  • the heads and the cut legs of the coupling elements are respectively removed in the different processes, so that the coupling elements can be efficiently and naturally removed from the fastener tapes without damaging the fastener tapes.

Landscapes

  • Slide Fasteners (AREA)
  • Toys (AREA)
EP92107882A 1991-05-13 1992-05-11 Method for forming element-free spaces in slide fastener chain Expired - Lifetime EP0513708B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP202618/91 1991-05-13
JP3202618A JPH04364803A (ja) 1991-05-13 1991-05-13 スライドファスナーチェーンのスペース部作成方法

Publications (2)

Publication Number Publication Date
EP0513708A1 EP0513708A1 (en) 1992-11-19
EP0513708B1 true EP0513708B1 (en) 1995-06-14

Family

ID=16460364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107882A Expired - Lifetime EP0513708B1 (en) 1991-05-13 1992-05-11 Method for forming element-free spaces in slide fastener chain

Country Status (12)

Country Link
EP (1) EP0513708B1 (enrdf_load_stackoverflow)
JP (1) JPH04364803A (enrdf_load_stackoverflow)
KR (1) KR950013024B1 (enrdf_load_stackoverflow)
CN (1) CN1066576A (enrdf_load_stackoverflow)
BR (1) BR9201839A (enrdf_load_stackoverflow)
CA (1) CA2067922C (enrdf_load_stackoverflow)
DE (1) DE69202920T2 (enrdf_load_stackoverflow)
ES (1) ES2073810T3 (enrdf_load_stackoverflow)
FI (1) FI922050A7 (enrdf_load_stackoverflow)
MY (1) MY131291A (enrdf_load_stackoverflow)
TW (1) TW208662B (enrdf_load_stackoverflow)
ZA (1) ZA923465B (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103251179B (zh) * 2012-02-21 2015-09-23 Ykk株式会社 一种拉链制造装置
KR101577982B1 (ko) * 2013-07-11 2015-12-16 (주)유닉스지퍼 냉각에어분사형 메탈지퍼표면 연마장치
CN104684435B (zh) * 2013-12-16 2018-02-02 Ykk株式会社 拉链链条的空隙部加工装置
KR101952066B1 (ko) * 2018-01-08 2019-05-30 박우식 지퍼 절개부 형성 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225430A (en) * 1964-07-29 1965-12-28 Scovill Manufacturing Co Gap production in slide fastener chain
NL168126B (nl) * 1972-11-28 Yoshida Kogyo Kk Inrichting voor het verwijderen van sluitelementen.
US4366736A (en) * 1979-06-22 1983-01-04 Yoshida Kogyo K.K. Apparatus for finishing slide fastener stringers
JPH0763412B2 (ja) * 1990-11-29 1995-07-12 ワイケイケイ株式会社 スライドファスナーチェーンのスペース作成方法とその装置

Also Published As

Publication number Publication date
AU1529992A (en) 1992-11-26
KR950013024B1 (ko) 1995-10-24
AU645197B2 (en) 1994-01-06
FI922050L (fi) 1992-11-14
MY131291A (en) 2007-08-30
EP0513708A1 (en) 1992-11-19
TW208662B (enrdf_load_stackoverflow) 1993-07-01
CA2067922A1 (en) 1992-11-14
ES2073810T3 (es) 1995-08-16
CN1066576A (zh) 1992-12-02
KR920021299A (ko) 1992-12-18
JPH04364803A (ja) 1992-12-17
DE69202920T2 (de) 1996-02-22
DE69202920D1 (de) 1995-07-20
ZA923465B (en) 1993-01-27
FI922050A0 (fi) 1992-05-06
FI922050A7 (fi) 1992-11-14
CA2067922C (en) 1995-10-03
BR9201839A (pt) 1993-01-05

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