Title: Slide fastener coupling element forming apparatus and cutting punch
Application Number: 93108778 Application Date: 1993.07.17
Publication Number: 1081599 Publication Date: 1994.02.09
Approval Pub. Date: 2002.05.15 Granted Pub. Date: 2002.05.15
International Classifi-cation: A44B19/42;B21D53/52
Applicant(s) Name: Yoshida Kogyo K. K. Address:
Inventor(s) Name: Morioda Koitsu;Matsuda Nobuhiko
Attorney & Agent: ZHANG MINHUA
Abstract:
    As it is intermittently supplied, a blank wire having a generally Y-shape cross section is cut into slices of a predetermined thickness by a cutting punch, which is fixed to the frame, and a coacting cutting die, which is reciprocatingly movable in the cutting direction. Then a bulge is formed on the head portion of the cut coupling element by a bulge forming die, which is connected with the forward end in stroke direction of the cutting die, and a coacting bulge forming punch, which is movable upwardly and downwardly. The cutting punch is equipped with preventing means on the upper side of the end of a blade for preventing the cut coupling element from jumping up from the blade, so that a bulge can be formed on the head portion reliably, without giving any damage to peripheral equipments.
Time: 6
<- Previous Patent:Top end stop for concealed slide ...   |  Next Patent:Cord stopper ->