EP0513708B1 - Method for forming element-free spaces in slide fastener chain - Google Patents
Method for forming element-free spaces in slide fastener chain Download PDFInfo
- 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
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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)
Description
- 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). With this citation, there is known 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.
- However, 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.
- It is therefore an object of this invention to overcome the aforementioned disadvantages and to provide a method of forming element-free space sections in a slide fastener chain, whereby coupling elements can be efficiently removed by a small force without damaging fastener tapes.
- According to a first aspect of this invention, there is provided 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.
- According to a second aspect of this invention, in removing cut legs remaining on fastener tapes, there is provided 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.
- According to this invention, 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.
- 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.
- This and other objects and advantages of this invention will be more apparent from the following detailed description of a preferred embodiment taken in conjunction with the accompanying drawings in which like reference numbers refer to like or corresponding parts throughout the several views.
-
- FIG. 1 is a schematic view of an apparatus for carrying out the method of this invention;
- FIG. 2 is a sectional view at the state that a slide fastener chain is set in the apparatus, in order to punch heads of coupling elements;
- FIG. 3 is a sectional view at the state that legs of coupling elements are cut;
- FIG. 4 is a sectional view at the state that cut heads of coupling elements are removed;
- FIG. 5 is a schematic and perspective view of a first coupling element leg removing means;
- FIG. 6 is a sectional view of principal parts of the first coupling element leg removing means;
- FIG. 7 is a side view of principal parts of a second coupling element leg removing means;
- FIG. 8 is a plan view of a slide fastener chain in which heads of coupling elements are removed;
- FIG. 9 is a plan view of a slide fastener chain in which cut legs are removed in both side ends of space-forming sections;
- FIG. 10 is a plan view of a slide fastener chain in which space sections are formed and completed.
- An embodiment of this invention will be described with reference to the drawing figures.
- Referring now to 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. - Right and left fastener stringers are supplied at the interengaged state to remove
heads 3 of interengagedcoupling elements 2 in the coupling element punching means 10 as shown in FIG. 2. - Referring to FIG. 2 to FIG. 4 showing the orders for removing
heads 3 ofcoupling elements 2 fromfastener tapes 8 ,a slide fastener chain 1 is guided by a pair of right andleft chain guides 14. When space sections of the slide fastener chain 1 reach to the coupling element punching means 10, the transfer of the fastener chain is stopped andpressure pads chain guides 14. Then,space sections 9 offastener tapes 8 are held between thechain guides 14. Theheads 3 of thecoupling elements 2 are pressed by means of a descendingpunch 11 and a pair of ascendingcutters coupling elements 2 as shown in FIG. 3. Next, the cut head 6 of theindividual coupling element 2 is held between thepunch 11 and a knock-outrod 13 and ascended to remove theheads 3 and the upper legs of the coupling elements. The knock-outrod 13 has the same length as aspace section 9 and disposed between thecutters 12. The knock-outrod 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 instringer 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 thespace section 9 in the first coupling elementleg removing means 20. When the slide fastener chain 1 transferred from the coupling element punching means 10 being guided by achain guide 16 reaches to the first coupling element leg removing means 20, it is stopped and a spacesection determining member 21 descends from the upward position to carry out the positioning of the slide fastener chain 1, as shown in FIG. 5. Thechain guide 16 is disposed contacting the back face of the slide fastener chain 1 and is provided with a pair ofapertures center guide 22 is set under thechain guide 16 and is ascended through workingapertures 24 as shown in FIG. 5 and FIG. 6. The projected both ends of thecenter guide 22 are passed through the punched gaps of theheads 3 of the coupling elements in a slide fastener chain 1 and engaged in apositioning grave 25 which is formed in the back face of the spacesection determining member 21, so as to carry out the positioning. Right andleft grippers center guide 22 and ascended as shown by arrows in FIG. 6. After the grippers are contacted to the back faces of thefastener tape 8, they are moved toward each other to holdcut legs 5 at both side ends ofspace section 9 between the sides of thecenter guide 22 and thegrippers cut legs 5 are drawn-out downwardly in the direction orthogonal to the surfaces of theslide fastener tapes 8 as shown in FIG. 9, while holding thecut legs 5 between thecenter guide 22 and thegrippers 23. In the first coupling element leg removing means 20, all cutlegs fastener tapes 8 are removed at one time to form thespace section 9. Then, all thecut legs center guide 22 and grippers having the approximate same length as thespace section 9 and thereby are drawn-out downwardly. The workingapertures 24 of thechain guides 16 are required to be punched at the approximate same length as thespace section 9. - The slide fastener chain 1 in which the
cut legs 5 are removed at the both side ends of thespace sections 9, is transferred to the second coupling element leg removing means 30 by guide rollers. The second removing means 30 serves to scrape off and remove all of remainingcut legs 4 by means of arotary cutter 31 and arotary 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 aspring 34. The slide fastener chain 1 which is processed in the first couplingelement removing means 20, is always moved and guided along the space section terminal detector 36. When the head-removed portion of thespace section 9 reaches to the detector, the space section terminal detector 36 is projected to the space section by thespring 34 as shown in FIG. 7, so that atip stopper 35 is contacted with the heads of the coupling elements. Then, a notch (not shown) for preventing the rotation of therotary tumbler 33 by a pulling force of the slide fastener chain 1 is released to rotate therotary tumbler 34, so that the slide fastener chain 1 approaches to therotary cutter 31. Theremaining cut legs 4 are scraped off and removed by theblades 32 of therotary cutter 31 as shown in FIG. 10. Since thecut legs 5 at the both side ends of thespace section 9 are pre-removed from the slide fastener chain 1, thecut legs 4 are easily removed without requirement of fine adjustment and without damaging thecoupling elements 2 arranged adjacent to the space section. - As described, according to this invention, 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.
Claims (3)
- A method for forming element-free space sections (9) in a slide fastener chain (1) including a pair of rows of interengaged discrete coupling elements (2) mounted on confronting edges of a pair of fastener tapes (8), said method being characterised by,
cutting heads (3) of interengaged discrete coupling elements (2) at space sections of said slide fastener chain (1) provided with coupling elements by means of a punch (11) and cutters (12) to separate the head from one leg of the forked legs of the individual coupling element (2);
pushing up said heads (3) of said coupling elements (2) from the cutting side in the direction orthogonal to fastener tape faces by a knock-out rod (13) to remove the other leg and said heads (3) of said coupling elements (2) from said fastener tapes (8); and
gripping said cut legs (4, 5) remaining in said fastener tapes (8) by grippers (23) to draw-out and remove said cut legs (4, 5) in the direction orthogonal to said fastener tape faces. - A method according to claim 1, wherein said cut legs (4, 5) adhered to the fastener tapes (8) are removed simultaneously to form the space section (9).
- A method according to claim 1 wherein said process of removing said cut legs (4, 5) remaining in said fastener tapes (8) comprises the steps of,
gripping only said cut legs (5) at both side ends of space sections (9) by said grippers (23) to draw-out and remove said cut legs (5) of said both side ends in the direction orthogonal to said fastener tape faces, and
scraping off said remaining cut legs (4) by means of a rotary cutter (31) and a rotary tumbler (33) for leading said space sections (9) toward said rotary cutter (31) to remove said cut legs (4) from said fastener tapes (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP202618/91 | 1991-05-13 | ||
JP3202618A JPH04364803A (en) | 1991-05-13 | 1991-05-13 | Manufacturing space portion of slide fastener chain |
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 (en) |
JP (1) | JPH04364803A (en) |
KR (1) | KR950013024B1 (en) |
CN (1) | CN1066576A (en) |
BR (1) | BR9201839A (en) |
CA (1) | CA2067922C (en) |
DE (1) | DE69202920T2 (en) |
ES (1) | ES2073810T3 (en) |
FI (1) | FI922050A (en) |
MY (1) | MY131291A (en) |
TW (1) | TW208662B (en) |
ZA (1) | ZA923465B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103251179B (en) * | 2012-02-21 | 2015-09-23 | Ykk株式会社 | A kind of slide fastener manufacturing apparatus |
KR101577982B1 (en) * | 2013-07-11 | 2015-12-16 | (주)유닉스지퍼 | The apparatus of grinding machine with cold air injection |
CN104684435B (en) * | 2013-12-16 | 2018-02-02 | Ykk株式会社 | The space part processing unit (plant) of fastener chain |
KR101952066B1 (en) * | 2018-01-08 | 2019-05-30 | 박우식 | Apparatus for forming zipper cutting line |
Family Cites Families (4)
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 (en) * | 1972-11-28 | Yoshida Kogyo Kk | DEVICE FOR REMOVING LOCKING ELEMENTS. | |
US4366736A (en) * | 1979-06-22 | 1983-01-04 | Yoshida Kogyo K.K. | Apparatus for finishing slide fastener stringers |
JPH0763412B2 (en) * | 1990-11-29 | 1995-07-12 | ワイケイケイ株式会社 | Slide fastener chain space creation method and device |
-
1991
- 1991-05-13 JP JP3202618A patent/JPH04364803A/en active Pending
-
1992
- 1992-04-22 TW TW081103217A patent/TW208662B/zh active
- 1992-05-01 CA CA002067922A patent/CA2067922C/en not_active Expired - Fee Related
- 1992-05-06 FI FI922050A patent/FI922050A/en not_active Application Discontinuation
- 1992-05-07 MY MYPI92000789A patent/MY131291A/en unknown
- 1992-05-11 DE DE69202920T patent/DE69202920T2/en not_active Expired - Fee Related
- 1992-05-11 ES ES92107882T patent/ES2073810T3/en not_active Expired - Lifetime
- 1992-05-11 BR BR929201839A patent/BR9201839A/en not_active Application Discontinuation
- 1992-05-11 EP EP92107882A patent/EP0513708B1/en not_active Expired - Lifetime
- 1992-05-12 KR KR1019920008007A patent/KR950013024B1/en active IP Right Grant
- 1992-05-13 CN CN92103578A patent/CN1066576A/en active Pending
- 1992-05-13 ZA ZA923465A patent/ZA923465B/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI922050A (en) | 1992-11-14 |
CA2067922C (en) | 1995-10-03 |
FI922050A0 (en) | 1992-05-06 |
DE69202920T2 (en) | 1996-02-22 |
EP0513708A1 (en) | 1992-11-19 |
ZA923465B (en) | 1993-01-27 |
DE69202920D1 (en) | 1995-07-20 |
TW208662B (en) | 1993-07-01 |
KR950013024B1 (en) | 1995-10-24 |
MY131291A (en) | 2007-08-30 |
JPH04364803A (en) | 1992-12-17 |
AU645197B2 (en) | 1994-01-06 |
KR920021299A (en) | 1992-12-18 |
ES2073810T3 (en) | 1995-08-16 |
AU1529992A (en) | 1992-11-26 |
BR9201839A (en) | 1993-01-05 |
CA2067922A1 (en) | 1992-11-14 |
CN1066576A (en) | 1992-12-02 |
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