Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Opposed registering coacting female molds
Patent
1985-04-05
1986-12-09
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Opposed registering coacting female molds
29 332, 29 34A, 29767, 264252, 425122, 425545, 425814, B29D 502
Patent
active
046278079
ABSTRACT:
An apparatus of manufacturing a slide fastener with a separable end stop according to the invention includes: a step which is carried out while separating engaged stringers of continuous length which have space portions disposed at regular intervals in their longitudinal directions and which consists of conveying the separated stringers through an injection molding station; suspending the operation of conveying the stringers in such a manner that one of the space portions is disposed at the injection molding station; and simultaneously injection-molding upper stops and pins which constitute a separable end stop on the stringers at each end of the space portion. The improvement comprises a step, carried out prior to the injection molding step, of independently bending a portion of the tape which constitutes each of the stringers at the space portion within the injection molding station, whereby the respective portions of the stringers on both sides of the space portion are moved toward the center of the injection molding station and whereby end fastener elements at opposite ends of the space portion are respectively retained by stoppers which are made immovable relative to the injection molding station in terms of the moving direction of the stringers, thereby effecting positioning of the stringers.
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patent: 4492547 (1985-01-01), Nogai
Chiesa Richard L.
Yoshida Kogyo K.K.
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