Method and apparatus for applying top end stops to a fastener stringer chain
AssigneeYoshida Kogyo K.K.
InventorsKeiichi Yoshieda, Yoshitaka Iimura
Life of this patent
Estimating the term…
Abstract
There is disclosed an apparatus for applying top end stops to a fastener stringer chain substantially in a continuous cycle of operation, wherein a first means is provided to effect the fusing and shaping of a strip of plastic film for application to the chain and a second means is provided to effect the cutting of the chain to which the film strip has been applied in the form of a top end stop. Said first and second means are arranged so that both shaping and cutting take place at the same working station without having to transfer the chain for the two different operations.
Claims6
Apparatus for applying top end stops to a fastener stringer chain which comprises:
- (a) a base;
- (b) a housing mounted on said base and movable in a horizontal direction in which the chain is to travel;
- (c) a shaping punch holder movably accommodated within said housing and having a shaping punch movable relatively to said holder;
- (d) a seal-cut punch movably accommodated within said housing;
- (e) means for driving said holder, said shaping punch and said steel-cut punch relatively to each other;
- (f) means for feeding a strip of plastic film to a working station;
- (g) a supersonic horn disposed above the working station and operatively associated with said shaping punch and said seal-cut punch to apply said strip to the chain and to sever the applied strip, respectively;
- (h) gripper means for advancing the chain a predetermined distance;
- (i) a pair of measuring rollers passing the chain therebetween;
- and
- (j) means for clamping the chain taughtly between said gripper means and said rollers.
Dependencies are inferred from the claim text.