EP0407846B1 - Method of forming space section devoid of coupling elements in continuous slide fastener chain - Google Patents

Method of forming space section devoid of coupling elements in continuous slide fastener chain Download PDF

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Publication number
EP0407846B1
EP0407846B1 EP90112562A EP90112562A EP0407846B1 EP 0407846 B1 EP0407846 B1 EP 0407846B1 EP 90112562 A EP90112562 A EP 90112562A EP 90112562 A EP90112562 A EP 90112562A EP 0407846 B1 EP0407846 B1 EP 0407846B1
Authority
EP
European Patent Office
Prior art keywords
space section
slide fastener
fastener chain
coupling elements
chain
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
EP90112562A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0407846A3 (en
EP0407846A2 (en
Inventor
Yukio Sanada
Kazuki Kuse
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
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 YKK Corp filed Critical YKK Corp
Publication of EP0407846A2 publication Critical patent/EP0407846A2/en
Publication of EP0407846A3 publication Critical patent/EP0407846A3/en
Application granted granted Critical
Publication of EP0407846B1 publication Critical patent/EP0407846B1/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 an improved method of forming space sections devoid of coupling elements disposed, with a predetermined distance, in a slide fastener chain which is composed of a pair of continuous rows of interengaged coupling elements.
  • a proceeding side as viewed from the feed direction of a slide fastener chain will be expressed as a downstream side. Then, a following side will be expressed as an upstream side.
  • the portion of a continuous slide fastener chain to be a space section can be placed below a mechanism for removing the rows of fastener elements from the fastener chain.
  • the two indexing means are disposed at the upstream side and the downstream side of the mechanism respectively and are operated simultaneously.
  • a fastener tape is locally elongated or shrunk, thus, there is a possibility of changing of a length of the portion.
  • one of the two indexing means acts on desired elements precisely while another indexing means cannot act on other desired elements precisely. Therefore, it is feared that a faulty element as described before is produced in this apparatus also.
  • US-A-3 844 017 discloses a device for continuously producing individual strips of zipper chain from a continuous zipper chain by forming space sections devoid of coupling elements. A predetermined array of zipper teeth are removed by projections. These are sequentially actuated by a locating resp. detecting means provided downstream, which is brought into engagement with a fastener element of a normal zipper portion adjacent to the downstream end of the respective space section. By clamping a small tension is given to the slide fastener and the coupling elements are removed at the downstream port of the space section.
  • An object of the present invention is to provide a method by which, even if a fastener tape is locally elongated or shrunk, a space section devoid of coupling elements can be formed in a continuous slide fastener chain accurately and surely without forming a faulty element at the opposite adjacent sides of the space section.
  • a method of forming repeatedly one by one space sections devoid of coupling elements in a continuous slide fastener chain having a pair of rows of interengaged coupling elements comprises the following steps :
  • a portion to be the space section in the slide fastener chain is transported below an element-removing apparatus and the transportation of the slide fastener chain is stopped.
  • a downstream locating means as viewed from the feed direction of the slide fastener chain, is engaged to a fastener element of a normal portion not to be the space section adjacent to the downstream side end of the portion to be the space section.
  • a small tension is given to the slide fastener chain so that the pair of rows of the interengaged coupling elements at the downstream side of the portion are located below a cutting means of the element-removing apparatus. Accordingly, if the length of the portion to be the space section is changed due to being elongated or shrunk of the fastener tape, the pair of rows of the elements at the downstream side of the portion are brought to stop precisely for being removed in a next step.
  • downstream locating means and the cutting means are returned to positions at which the both means are not operated respectively.
  • an upstream locating means is engaged to a fastener element of a normal portion not to be the space section adjacent to the upstream side end of the portion to be the space section.
  • a small tension is given to the slide fastener chain so that the unremoved rest of the pair of rows of the interengaged coupling elements at the upstream side of the portion is located below the cutting means of the element-removing apparatus. Accordingly, if the length of the portion to be the space section is changed due to being elongated or shrunk of the fastener tape, the unremoved rest of the pair of rows of the elements at the upstream side of the portion is brought to stop precisely for being removed in a next step.
  • the upstream locating means and the cutting means are returned to positions at which the both means are not operated respectively.
  • a next one-cycle can be started by transporting the slide fastener chain again as a first step of the next one-cycle.
  • the space sections are formed repeatedly one by one in the slide fastener chain, with the predetermined distance, accurately and surely without forming a faulty element at the opposite adjacent sides of the space section.
  • the method of the present invention is embodied with an apparatus such as shown in Figs. 1, 2, and 3.
  • the rows 34 of coupling elements of a portion 8 are removed from a continuous slide fastener chain 2 to be a space section 7 which has a predetermined length L.
  • a base 1 has in its top surface a longitudinal guide path 3 along which the slide fastener chain 2 is transported intermittently in a direction indicated by an arrow C by operation of a drive roller 4 and a pinch roller 5.
  • a sensor 6 is equipped at the guide path 3 so as to detect that the portion 8 is brought to a desired position to form the space section 7 below an element-removing apparatus 9 described hereinafter .
  • a metal detector is adopted as a sensor 6. The detector detects that the portion 8 is brought to the desired position below the element-removing apparatus 9 by means of counting the number of the fastener elements which are fed over the detector. Then, the metal detector sends signals so that the rotation of the drive roller 4 is stopped.
  • a photoelectric cell or a roller are adopted respectively as a sensor 6. In case that the roller is used, it rotates touching the slide fastener chain and is interconnected to an encoder so that the length of the fed chain is detected.
  • a link 12 is interconnected to a motor (not shown) mounted on a support frame 10 through the intermediary of an eccentric wheel. Then, a movable block 13 is fixed to the link 12 so as to be moved vertically guided by a guide rod 14 provided at the support frame 10.
  • a punch 15 serves as a cutting member and is connected to the center of the underside of the movable block 13.
  • the longitudinal length W of the punch 15, as viewed from the feed direction of the slide fastener chain 2, is set to be shorter than the longitudinal length L of the space section 7 and longer than half of the length L.
  • Air cylinders 19, 20 are mounted on a bracket 16 fixed to the support frame 10.
  • a downstream locating pin 17 and an upstream locating pin 18 serve as a downstream locating means and an upstream locating means respectively.
  • the pins 17, 18 are separately operated by the cylinders 19, 20 respectively and are connected to piston rods 21, 22 respectively.
  • the downstream locating pin 17 and the upstream locating pin 18 are placed to touch both sides of the punch 15 respectively over the guide path 3 for the fastener chain 2 so as not to interfere with each other. Then, they move vertically through halls 23, 24 and 25 formed in the movable block 13 by means of the air cylinders 19, 20 respectively. The vertical movement of the punch 15 does not interfere with the movements of the locating pins 17, 18.
  • a chain-pressuring rod 26 and a chain-stretching rod 27 are vertically movably provided at the downstream side end of the movable block 13 so as to locate over the guide path 3 of the base 1. Then, the rods 26, 27 are urged downward by coil springs 28, 29 respectively and their length of the portions which are projected downward from the movable block 13 can be adjusted by double nuts 30, 31 respectively.
  • a pair of dies 32, 33 are disposed on each side of the guide path 3 of the base 1 so as to support undersides of legs of the slide fastener chain 2 which are attached to the fastener tape.
  • Each die 32, 33 has the same longitudinal length which is corresponding to the longitudinal length W of the punch 15.
  • Each edge 35, 36 is formed along each fastener tape.
  • Heads 37, 37 of the both rows 34, 34 of the coupling fastener elements are interengaged each other.
  • the punch 15 descends to cut and remove a group of the interengaged heads 37, 37 formed between the edges 35, 36, while the front and back faces of the punch 15 having the longitudinal length W touch the edges 35, 36 respectively.
  • the both locating pins 17, 18 are provided with tip ends 38, 39 respectively.
  • Each tip end 38, 39 is placed so as to be spaced from each end of the punch 15 with a length of predetermined element pitch.
  • the chain-pressuring rod 26 and the chain-stretching rod 27 are operated.
  • each tip end 38, 39 is set to engage to each leg 43, 44 of each fastener element 41, 42 of one fastener stringer 40 of the slide fastener chain 2.
  • These fastener elements 41, 42 are adjacent to the downstream side end and the upstream side end of the portion to be the space section respectively.
  • a fore end pad 45 of the chain-pressuring rod 26 is provided to be faced to a plane top surface 46 of the base 1. As shown in Figs. 5 and 7, when the rod 26 descends, the pad 45 pinches the slide fastener chain 2 in the guide path 3 with the surface 46 so as to pressure and clamp the fastener chain 2.
  • a recess 48 is formed on the top surface of the base 1 transversely through the guide path 3 below a fore end pad 47 of the chain-stretching rod 27.
  • the pad 47 pushes the slide fastener chain 2 into the recess 48 so as to give a small tension to the fastener chain 2.
  • the both pads 45, 47 are placed so as to be projected downward deeper than a position of the cutting edge of the punch 15 before cutting and removing operation.
  • the continuous slide fastener chain 2 is transported intermittently along the guide path 3 on the base 1 in the direction indicated by the arrow C by operation of the drive roller 4 and the pinch roller 5.
  • the sensor 6 detects that. Then, corresponding to the signals from the sensor 6, the rotation of the rollers 4, 5 is stopped. Accordingly, the transportation of the slide fastener chain 2 is stopped.
  • the air cylinder 19 is operated to move the downstream locating pin 17 downward to strike against the leg of a fastener element, which is adjacent to the fastener element 41.
  • this fastener element 41 is the terminal element of a normal portion 50 not to be the space section 7 and adjacent to the downstream side end 49 of the portion 8 to be the space section 7.
  • a tip end 38 of the downstream locating pin 17 strikes against the upper surface of the leg of the fastener element adjacent to the fastener element 41, the tip end 38 might be inserted between the leg 43 of the fastener element 41 and the leg of the above mentioned fastener element which is adjacent to the element 41 due to a position at which the slide fastener chain 2 is brought to stop.
  • the motor (not shown) is operated to move the movable block 13 downward through the Intermediary of the link 12.
  • the slide fastener chain 2 is pressed and clamped between the fore end pad 45 of the chain-pressuring rod 26 and the plane top surface 46 of the base 1, further the chain 2 is pushed slightly into the recess 48 by means of the fore end pad 47 of the chain-stretching rod 27.
  • the tip end 38 of the downstream locating pin 17 has struck against the upper surface of the leg of the fastener element adjacent to the fastener element 41 as shown in Figs. 8 and 10 or has been inserted between the leg 43 of the fastener element 41 and the leg of the fastener element adjacent to the element 41, although this condition is not shown.
  • the tip end 38 engages to the leg 43 of the fastener element 41 as shown in Figs. 9 and 11, because, the slide fastener chain 2 located below the element-removing apparatus 9 is stretched slightly toward downstream side. Accordingly, the downstream side end 49 of the portion 8 to be the space section 7 is located precisely.
  • the link 12 is operated to move the punch 15 in a way as shown in Figs. 2, 3, 5 and 11 so that a group of interengaged heads 37 of the rows 34 of the fastener elements with a length l1 disposed at the downstream side of the portion 8 is cut by the cutting edge of the punch 15 to be removed from the fastener chain 2.
  • the slide fastener chain 2 is transported again in the direction indicated by the arrow C.
  • the sensor 6 detects that. Therefore, corresponding to the signals from the sensor 6, the rotations of the rollers 4, 5 are stopped. Accordingly, transportation of the slide fastener chain 2 is stopped.
  • the air cylinder 20 is operated to move the end tip 39 of the upstream locating pin 18 downward to strike against the leg of a fastener element which is adjacent to the fastener element 42 of a normal portion 52 not to be the space section 7. As shown in Figs. 12 and 13, this element is adjacent to the upstream side end 51 of the portion 8 to be the space section 7.
  • tip end 39 strikes against the upper surface of the leg of the fastener element adjacent to the fastener element 42 as shown in Fig. 12, or is inserted between the leg of the fastener element 42 and the leg of the fastener element adjacent to the element 42.
  • the chain-pressuring rod 26 and the chain-stretching rod 27 act on the slide fastener chain 2 in the same manner as the above mentioned forming process for the downstream side part of the space section. Accordingly, as shown in Fig. 13, the upstream side rest of the portion 8 to be the space section 7 with a length l2 is located precisely, even if the slide fastener chain 2 is locally elongated or shrunk.
  • the link 12 is operated to move the punch 15 in a way as shown in Figs. 7 and 13 so that a group of interengaged heads 37 of the rows 34 of the fastener elements with the length l2 disposed at the upstream side of the portion 8 are cut by the cutting edge of the punch 15 and removed from the fastener chain 2.
  • the continuous slide fastener chain 2 is transported again as a first step so that a next one-cycle is started.
  • the space sections 7 are formed repeatedly one by one in the slide fastener chain 2, with a predetermined distance.
  • the slide fastener chain 2 is moved within a part of the guide path 3 which has a longitudinal length corresponding to the length L of the space section 7 and the punch 15 is moved on only a vertical line.
  • a continuous slide fastener chain 2 is kept at one position.
  • a punch as a cutting means composes of a downstream punch 53 and an upstream punch 54, both of which serve as cutting members respectively and both of which have the same length corresponding to the half of the length L of a space section.
  • a downstream locating pin 17 as a downstream locating means and the downstream punch 53 are operated, then in the forming process for the upstream side part of the portion, an upstream locating pin 18 as an upstream locating means and the upstream punch 54 are operated.
  • a chain-pressuring rod and a chain-stretching rod are operated in the same manner as the above mentioned embodiment.
  • a continuous slide fastener chain 2 is kept at one position, while a punch 55 as a cutting member moves downstream side and upstream side (backward and forward) within a part which has a length corresponding to the longitudinal length L of a space section.
  • the punch 55 has a longitudinal length being shorter than the longitudinal length L of the space section and longer than the half of it.
  • a downstream locating pin and an upstream locating pin, both of which serve as locating means respectively, a chain-pressuring rod and a chain-stretching rod are operated in the same manner as the above mentioned embodiment.

Landscapes

  • Slide Fasteners (AREA)
  • Making Paper Articles (AREA)
EP90112562A 1989-07-10 1990-07-02 Method of forming space section devoid of coupling elements in continuous slide fastener chain Expired - Lifetime EP0407846B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP177619/89 1989-07-10
JP1177619A JPH0649008B2 (ja) 1989-07-10 1989-07-10 スライドファスナーチェンのスペース形成方法

Publications (3)

Publication Number Publication Date
EP0407846A2 EP0407846A2 (en) 1991-01-16
EP0407846A3 EP0407846A3 (en) 1992-04-29
EP0407846B1 true EP0407846B1 (en) 1995-06-28

Family

ID=16034171

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112562A Expired - Lifetime EP0407846B1 (en) 1989-07-10 1990-07-02 Method of forming space section devoid of coupling elements in continuous slide fastener chain

Country Status (13)

Country Link
EP (1) EP0407846B1 (ja)
JP (1) JPH0649008B2 (ja)
KR (1) KR920004839B1 (ja)
AU (1) AU622811B2 (ja)
BR (1) BR9003394A (ja)
CA (1) CA2019082C (ja)
DE (1) DE69020444T2 (ja)
ES (1) ES2075094T3 (ja)
FI (1) FI95648C (ja)
HK (1) HK132597A (ja)
ID (1) ID944B (ja)
MY (1) MY106483A (ja)
ZA (1) ZA905399B (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3044510B2 (ja) * 1992-08-26 2000-05-22 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部形成方法
EP0771538B1 (en) * 1995-05-09 2003-12-10 Ykk Corporation Method of manufacturing slide fastener
JP3545164B2 (ja) * 1997-04-11 2004-07-21 Ｙｋｋ株式会社 スライドファスナーチェーンのスペース形成方法及びその装置
JP3960945B2 (ja) * 2003-05-09 2007-08-15 Ｙｋｋ株式会社 スライドファスナーエレメント列の噛合状態検出装置
JP4941248B2 (ja) * 2007-11-22 2012-05-30 株式会社デンソー 電磁スイッチ
CN102554013B (zh) * 2012-03-02 2014-06-11 上海东龙服饰有限公司 一种用于金属拉链定寸洗牙的拔牙装置及其拔牙方法
CN114393173B (zh) * 2022-01-06 2024-04-02 杭州萧山万隆链条制造有限公司 一种链条的制造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063323A (en) * 1956-09-26 1962-11-13 Jet Ind Corp Apparatus for producing separate slide fasteners from continuous fastener chain
US3844017A (en) * 1972-11-21 1974-10-29 Stagg Zipper Corp Apparatus for gapping zipper chain
US4131223A (en) * 1977-12-05 1978-12-26 Scovill Manufacturing Company Apparatus for gapping a slide fastener
JPS57134104A (en) * 1981-02-12 1982-08-19 Yoshida Kogyo Kk Space fabricating apparatus of slide fastener chain
EP0129757B1 (en) * 1983-06-28 1988-05-25 Yoshida Kogyo K.K. Formation of element-free spaces in slide fastener chains
JPS61284203A (ja) * 1985-06-10 1986-12-15 ワイケイケイ株式会社 スライドファスナーの務歯除去装置

Also Published As

Publication number Publication date
MY106483A (en) 1995-05-30
CA2019082C (en) 1996-01-30
BR9003394A (pt) 1991-08-27
EP0407846A3 (en) 1992-04-29
JPH0341904A (ja) 1991-02-22
HK132597A (en) 1997-10-03
CA2019082A1 (en) 1991-01-10
FI903385A0 (fi) 1990-07-04
ID944B (id) 1996-09-20
KR910002398A (ko) 1991-02-25
AU622811B2 (en) 1992-04-16
DE69020444D1 (de) 1995-08-03
ES2075094T3 (es) 1995-10-01
ZA905399B (en) 1991-05-29
KR920004839B1 (ko) 1992-06-19
DE69020444T2 (de) 1996-03-21
EP0407846A2 (en) 1991-01-16
FI95648C (fi) 1996-03-11
JPH0649008B2 (ja) 1994-06-29
FI95648B (fi) 1995-11-30
AU5755590A (en) 1991-03-07

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