EP0064764B1 - Procédé et appareil de fabrication des éléments de fermetures à glissière - Google Patents

Procédé et appareil de fabrication des éléments de fermetures à glissière Download PDF

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Publication number
EP0064764B1
EP0064764B1 EP19820104079 EP82104079A EP0064764B1 EP 0064764 B1 EP0064764 B1 EP 0064764B1 EP 19820104079 EP19820104079 EP 19820104079 EP 82104079 A EP82104079 A EP 82104079A EP 0064764 B1 EP0064764 B1 EP 0064764B1
Authority
EP
European Patent Office
Prior art keywords
coupling element
rod
forming
ram
base
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
EP19820104079
Other languages
German (de)
English (en)
Other versions
EP0064764A3 (en
EP0064764A2 (fr
Inventor
Kazumi Kasai
Koitsu Morioka
Sadanobu Sugahara
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
Yoshida Kogyo KK
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
Priority claimed from JP7200481A external-priority patent/JPS57187134A/ja
Priority claimed from JP56215060A external-priority patent/JPS58116946A/ja
Application filed by Yoshida Kogyo KK filed Critical Yoshida Kogyo KK
Publication of EP0064764A2 publication Critical patent/EP0064764A2/fr
Publication of EP0064764A3 publication Critical patent/EP0064764A3/en
Application granted granted Critical
Publication of EP0064764B1 publication Critical patent/EP0064764B1/fr
Expired 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
    • A44B19/02—Slide fasteners with a series of separate interlocking members secured to each stringer tape
    • A44B19/04—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers
    • A44B19/06—Stringers arranged edge-to-edge when fastened, e.g. abutting stringers with substantially rectangular members having interlocking projections and pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/46—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples
    • B21D53/50—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts
    • B21D53/52—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts fastener elements; Attaching such elements so far as this procedure is combined with the process for making the elements

Definitions

  • the present invention relates to the production of slide fastener stringers, and more particularly to a method of and apparatus for manufacturing slide fastener coupling elements of metal suitable for use with a two-way slide fastener as claimed in the precharacterising parts of claim 1, 5.
  • Such a method and apparatus are known from US-A-2804677.
  • a two-way slide fastener has a pair of oppositely disposed sliders and hence can be opened from either end.
  • To facilitate smooth movement of the sliders in either direction it is required to chamfer the coupling heads of metallic coupling elements on one face of each coupling head.
  • Such chamfering is hitherto performed by means of a separate, small-sized cutting tool, which not only has a short endurance, but also often causes production of burrs and chips. Further, with the small-sized cutting tool, it is difficult to produce adequate quality of coupling elements.
  • a method provided of manufacturing coupling elements for a slide fastener comprising the steps of: providing a rod of metal of a generally Y-shaped cross section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base; feeding the rod stepwise in a longitudinal direction; transversely slicing the rod into a plurality of coupling element blanks in timed relation to said stepwise feeding; placing the coupling element blanks, one at a time, in a coupling-head forming station away from the rod in a direction perpendicular to said longitudinal direction; and at the coupling-head forming station, forming the base of each coupling element blank into a final coupling head of one coupling element which head has a projection from one face and a coacting socket in the other face; characterized in: that said method comprises the further step of forming a chamfered portion on the base of the rod every time each coupling element blank is sliced off from the rod and
  • an apparatus for manufacturing coupling elements for a slide fastener from a rod of metal of a generally Y-shaped cross-section having a base, as a prospective coupling head, and a pair of legs divergently extending from the base comprising: means for feeding the rod in a longitudinal direction in regular steps of a predetermined distance equal to the thickness of one coupling element; a fixed cutting punch having a cutting edge; a reciprocating ram movable relatively to said cutting punch perpendicularly to said longitudinal direction; a cutting die carried by said ram and having a hole for the passage of the rod, said cutting die being movable, in response to the reciprocating movement of said ram, across a cutting edge of said cutting punch for transversely slicing the rod into a plurality of coupling element blanks, one on each stroke of said ram; a forming die carried by said ram and movable, in response to the reciprocating movement of said ram, toward and away from said cutting edge of
  • the present invention seeks to provide a method of manufacturing high quality metallic coupling elements suitable for two-way slide fasteners.
  • the invention also seeks to provide a method of manufacturing accurate coupling elements, for two-way slide fasteners, with improved rate of production.
  • the invention further seeks to provide an apparatus for carrying out the method described above, which not only requires no additional parts, but also has an improved endurance.
  • the apparatus 1 generally comprises a pair of rollers 7, 8 for feeding the rod 4 stepwise upwardly, i.e. in a longitudinal direction indicated by an arrow 9, in regular steps of a distance h ( Figure 2) equal to the thickness of a single coupling element 2', a coacting cutting die and punch 10, 11 for transversely slicing the rod 4 into a plurality of coupling element blanks 2 (only one shown in Figures 3 and 4) in timed relation to the stepwise feeding of the rod 4, and a coacting forming die and punch 12, 13 for forming a slice of coupling element blank 2 into a final coupling element 2'.
  • h Figure 2
  • the ram 15 has a horizontal channel 17 in which a projection 18 of the cutting .punch 11 is slidably received and which leads to the upper end of the hole 16 of the cutting die 10.
  • the cutting die 10 is movable back and forth, in response to the reciprocating movement of the ram 15, across the cutting edge 14 of the cutting punch 11 for transversely slicing the rod 4 into the individual coupling element blanks 2 one on each backward stroke of the movement of the ram 15.
  • the apparatus 1 also includes a means, disposed on the projection 18 of the cutting punch 11, for forming a chamfered portion 20 on the base 5 of the rod 4 at the end of each backward stroke of the ram 15, so that each coupling element blank 2 has the chamfereed base 5' ( Figures 3 and 4).
  • the chamfered-portion forming means comprises a chamfering surface 21 composed of a pair of first and second beveled surfaces 21a, 21b for being forced against the base 5 of the rod 4 at the end of each backward stroke of the ram 15.
  • the chamfered portion 20 on the base 5 of the rod 4 is composed of a pair of third and fourth beveled surfaces 20a, 20b corresponding to the first and second beveled surfaces 21a, 21b on the cutting punch 11.
  • the third beveled surface 20a extends at an angle a with respect to a vertical outer side surface 23 of the rod 4
  • the second beveled surface 20b extends at an angle (3 with respect to a horizontal upper end surface 4a of the rod 4.
  • the chamfering surface 21 is disposed at a corner defined by the projection 18 and a horizontal surface 24.
  • the horizontal surface 24 is disposed at a level above the bottom surface 25 of the projection 18 by a distance H ( Figure 2).
  • the upper horizontal surface 26 of the cutting die 10, which includes a cutting edge 27, is disposed at a level above the bed 17a of the channel 17 of the ram 15 by the same distance H.
  • a chamfered portion is formed on the base of the rod in order that the base of the individual coupling element blank will have had such chamfered portion before the formation of a projection and a coacting socket, and for this reason, it is possible to form a chamfered portion accurately and reliably, thus producing high quality of coupling elements suitable for a two-way slide fastener ( Figure 12).
  • the slicing step and the placing step and the chamfered-portion forming step are performed in sequence on only a single stroke of relative movement of the cutting die and punch, it is possible to manufacture accurate coupling elements with improved rate of production.
  • Figures 6 through 10 show a modified apparatus 40 according to a second embodiment similar to the apparatus 1 of Figures 1 through 5, and the only difference therefrom is as follows.
  • the chamfering surface 21 on the projection 18 of the cutting punch 11 is disposed below a corner 41 (described below) by a distance h ( Figure 7) equal to the thickness of a single coupling element 2', the corner 41 being defined by the projection .18 and the horizontal surface 24.
  • the chamfering surface 21 comprises a beveled surface of a nose 42 extending forwardly from the projection 18.
  • the forming punch 13 is lowered to press the coupling element blank 2 at the chamfered base 5' to thereby form the latter into a final coupling head 5" ( Figures 7,10,13 and 14) having a projection 30 from the lower face and a coating socket 31 in the upper face at such a position that the beveled surface 20 is disposed around the socket 31.
  • the coupling element blank 2 is retained in the recess 28 by the presser 32 lowered together with the forming punch 13.
  • a complete coupling element 2' has been produced ( Figures 7 and 10).
  • a beveled surface 45 corresponding to the auxiliary chamfering surface 43 is formed on the base 5 of the rod 4.
  • the beveled surface 45 is disposed below the beveled surface 20 by the distance h equal to the thickness of one coupling elemeht 2' and hence facilitates the formation of the beveled surface 20 on the next backward stroke of the ram 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Slide Fasteners (AREA)

Claims (9)

1. Un procédé de fabrication d'éléments d'accouplement (2') pour une fermeture à glissière (3), comprenant les phases consistant: à prendre une barre métallique (4) de section droite en forme de y dans son ensemble, comportant une base (5), en tant que future tête d'accouplement, et une paire de branches (6, 6) s'étendant de façon divergente depuis la base (5); à avancer la barre (4) pas à pas dans sa direction longitudinale; à trancher transversalement la barre (4) en une pluralité d'ébauches (2) d'éléments d'accouplement en synchronisme avec ledit avancement pas à pas; à placer les ébauches (2) d'élément d'accouplement, une par une dans un poste de formation de tête d'accouplement à l'écart de la barre dans une direction perpendiculaire à ladite direction longitudinale; et au poste de formation de tête d'accouplement, à transformer la base (5') de chaque ébauche (2) d'élément d'accouplement en une tête d'accouplement finale (5") d'un élément d'accouplement (2'), cette tête comportant une saillie (30) s'étendant à partir d'une des faces et un creux coopérant (31) dans l'autre face; caractérisé par le fait: que ledit procédé comprend la phase supplémentaire de formation d'une partie chanfreinée (20) sur la base (5) de la barre (4) avant que chaque ébauche (2) d'élément d'accouplement soit séparée par tranchage de la barre (4) puis placée dans le poste de formation de tête d'accouplement, chaque ébauche (2) d'élément d'accouplement comportant de ce fait la base chanfreinée (5); et que ladite phase de formation mentionnée en premier est effectuée de manière que la partie chanfreinée (20) soit disposée autour du creux (31).
2. Un procédé selon la revendication 1. ladite, phase de tranchage et ladite phase de mise en place ainsi que ladite phase de formation de partie chanfreinée étant effectuées de façon successive lors de chaque course relative d'une matrice (10) et d'un poinçon (11) de découpage coopérants.
3. Un procédé selon la revendication 2, ladite phase de formation de partie chanfreinée étant effectuée à une des extrémités de chaque course précitée de la matrice (10) et du poinçon (11) de découpage.
4. Un procédé selon la revendication 1, ladite formation de partie chanfreinée étant effectuée par pressage à froid.
5. Un appareil pour fabriquer des éléments d'accouplement (2') pour une fermeture à glissière (3) à partir d'une barre (4) de métal d'une section droite en forme de Y dans son ensemble, comportant une base (5), en tant que future tête d'accouplement, et une pair de branches (6, 6) s'étendant de façon divergente depuis la base (5), ledit appareil comprenant: un moyen (7, 8) pour avancer la barre (4) dans une direction longitudinale par pas réguliers d'une distance prédéterminée (h) égale à l'épaisseur d'un élément d'accouplement (2'); un poinçon de découpage fixe (11) comportant une arête coupante (14); un piston plongeur (15) un mouvement de va et vient pouvant être déplacé par rapport audit poinçon de découpage (11) perpendiculairement à ladite direction longitudinale; une matrice de découpage (10) supportée par ledit piston plongeur (15) et comportant un trou (16) pour le passage de la barre, ladite matrice de découpage (10) pouvant être déplacée, en réponse au déplacement de va et vient dudit piston plongeur (15), en travers de ladite arête coupante (14) dudit poinçon de découpage pour trancher transversalement la barre (4) en une pluralité d'ébauches (2) d'éléments d'accouplement, à raison d'une ébauche lors de chaque course dudit piston plongeur (15); une matrice de formage (12) supportée par ledit piston (15) et pouvant être déplacée, en réponse au déplacement de va et vient du piston plongeur (15) de manière à se rapprocher et à s'éloigner de ladite arête coupante (14) dudit poinçon de découpage (11) à une des extrémités de chaque course dudit piston plongeur (15); et un poinçon de formage (13) pouvant être déplacé en direction de ladite matrice de formage (12) pour transformer la base (5) de chaque ébauche (2) d'élément d'accouplement en une tête d'accouplement final (5") d'un élément d'accouplement (2'), cette tête comportant une saillie (30) s'étendant à partir d'une des faces et un creux coopérant (31) dans l'autre face; caractérisé par le fait: que ledit poinçon de découpage fixe (11) comprend une saillie (18), ledit piston plongeur (15) comportant une rainure (17) dans laquelle ladite saillie (18) dudit poinçon de découpage (11) est logée de façon coulissante et qui communique avec ledit trou (16) se trouvant à une des extrémités de ce dernier; un moyen (21), disposé sur ladite saillie (18) dudit poinçon de découpage (11) pour former une partie chanfreinée (20) sur la base (5) de la barre (4) à une des extrémités de chaque course dudit piston plongeur (15), chaque ébauche (2) d'élément d'accouplement comportant de ce fait la base chanfreinée (5'); et que les matrice et poinçon de formage précités (12, 13) ont pour effet de former le creux (31) de manière telle que la partie chanfreinée (20) se trouve autour du creux (31);
6. Un appareil selon la revendication 5, ledit moyen de formation de partie chanfreinée comprenant une surface de chanfreinage (21) destinée à venir porter avec force contre la base (5) de la barre (4) à une des extrémités de chaque course dudit piston plongeur (15).
7. Un appareil selon la revendication 6, ladite surface de chanfreinage (21) étant disposée à un premier niveau immédiatement en dessous de ladite arête tranchante (14) dudit poinçon de découpage (11).
8. Un appareil selon la revendication 6, ladite surface de chanfreinage (21) étant disposée à un second niveau en dessous de ladite arête tranchante (14) dudit poinçon de découpage (11) d'une distance égale à n fois l'épaisseur d'un élément d'accouplement (2'), où n représente un nombre naturel.
9. Un appareil selon la revendication 8, ledit moyen (21) de formation de partie chanfreinée comprenant une surface de chanfreinage auxiliaire (43) disposée en dessous de ladite surface de chanfreinage (21) à une distance h égale à l'épaisseur d'un élément d'accouplement (2').
EP19820104079 1981-05-13 1982-05-11 Procédé et appareil de fabrication des éléments de fermetures à glissière Expired EP0064764B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7200481A JPS57187134A (en) 1981-05-13 1981-05-13 Molding method and device for tooth for slide fastener
JP72004/81 1981-05-13
JP215060/81 1981-12-29
JP56215060A JPS58116946A (ja) 1981-12-29 1981-12-29 スライドフアスナ−用務歯成形装置

Publications (3)

Publication Number Publication Date
EP0064764A2 EP0064764A2 (fr) 1982-11-17
EP0064764A3 EP0064764A3 (en) 1983-07-20
EP0064764B1 true EP0064764B1 (fr) 1985-08-28

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EP19820104079 Expired EP0064764B1 (fr) 1981-05-13 1982-05-11 Procédé et appareil de fabrication des éléments de fermetures à glissière

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EP (1) EP0064764B1 (fr)
AU (1) AU536108B2 (fr)
BR (1) BR8202760A (fr)
DE (2) DE64764T1 (fr)
HK (1) HK62188A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0122505Y2 (fr) * 1984-09-14 1989-07-05
JP2803739B2 (ja) * 1993-01-29 1998-09-24 ワイケイケイ株式会社 スライドファスナー用務歯および務歯成形方法
JP3355041B2 (ja) * 1994-08-24 2002-12-09 ワイケイケイ株式会社 スライドファスナー用務歯とその成形方法及び装置
JP4508909B2 (ja) * 2005-03-09 2010-07-21 Ｙｋｋ株式会社 ファスナーストリンガの連続製造装置
CN101496663B (zh) * 2008-01-28 2011-07-20 福建浔兴拉链科技股份有限公司 拉链植齿机构及使用该植齿机构的拉链植齿机
ES2666661T3 (es) 2008-04-14 2018-05-07 Ykk Corporation Dientes de un lado metálicos y cierre de cremallera bidireccional
KR102059847B1 (ko) * 2016-05-06 2019-12-27 와이케이케이 가부시끼가이샤 파스너 엘리먼트, 파스너 엘리먼트의 제조 장치 및 파스너 엘리먼트의 제조 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734546A (en) * 1956-02-14 Firing
US2141200A (en) * 1935-09-03 1938-12-27 Talon Inc Machine for making fastener stringers
US2804677A (en) * 1950-11-17 1957-09-03 Talon Inc Machine for making slide fastener stringers
US2989803A (en) * 1957-03-01 1961-06-27 Walter V Chery Method of making slide fastener elements

Also Published As

Publication number Publication date
HK62188A (en) 1988-08-26
EP0064764A3 (en) 1983-07-20
DE3265787D1 (en) 1985-10-03
AU8320082A (en) 1982-11-18
AU536108B2 (en) 1984-04-19
BR8202760A (pt) 1983-04-19
EP0064764A2 (fr) 1982-11-17
DE64764T1 (de) 1984-02-02

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