EP 0064764 A2 19821117 - Method of and apparatus for manufacturing slide fastener coupling elements.
Title (en)
Method of and apparatus for manufacturing slide fastener coupling elements.
Title (de)
Verfahren und Vorrichtung zum Herstellen von Reissverschlussgliedern.
Title (fr)
Procédé et appareil de fabrication des éléments de fermetures à glissière.
Publication
Application
Priority
- JP 7200481 A 19810513
- JP 21506081 A 19811229
Abstract (en)
A method of and apparatus for manufacturing coupling elements (2 min ), suitable for a two-way slide fastener (3), successively from a rod (4) of metal of a generally Y-shaped cross section having a base (5), as a prospective coupling head, and a pair of diverging-legs (6, 6). As the rod (4) is fed longitudinally stepwise, it is transversely sliced into a plurality of coupling element blanks (2), one at a time, on the backward stroke of relative movement of a coacting cutting die and punch (10, 11). At the end of the backward stroke of the cutting die and punch (10, 11), a chamfering surface (21) on the cutting punch (11) is forced against the base (5) of the rod (4) to form a chamfered portion (20) thereon so that each sliced coupling element blank (2) has the chamfered base (5 min ). The chamfered base (5 min ) of each coupling element blank (2) is then formed, by a coacting forming die and punch (12,13), into a final coupling head (5 sec ) of one coupling element (2 min ) which head has a projection (30) from one face and a socket (31) in the other face at such a position that the chamfered portion (20) is disposed around the socket (31).
IPC 1-7
IPC 8 full level
A44B 19/06 (2006.01); B21D 53/52 (2006.01)
CPC (source: EP)
A44B 19/06 (2013.01); B21D 53/52 (2013.01)
Designated contracting state (EPC)
BE DE FR IT NL
DOCDB simple family (publication)
EP 0064764 A2 19821117; EP 0064764 A3 19830720; EP 0064764 B1 19850828; AU 536108 B2 19840419; AU 8320082 A 19821118; BR 8202760 A 19830419; DE 3265787 D1 19851003; DE 64764 T1 19840202; HK 62188 A 19880826
DOCDB simple family (application)
EP 82104079 A 19820511; AU 8320082 A 19820503; BR 8202760 A 19820513; DE 3265787 T 19820511; DE 82104079 T 19820511; HK 62188 A 19880818