Injection molding apparatus for the manufacture of zippers

Details Injection molding apparatus for the manufacture of zippers Injection molding apparatus for the manufacture of zippers

1977-09-27

1979-07-10

Hoag, W. E.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425814, B29D 500, B29F 100

Patent

active

041606361

ABSTRACT:
Apparatus for the manufacture of zippers comprising a vertically disposed rotor driven about its vertical axis intermittently and carrying a plurality of molds. Each mold has two mold sections, one fixed and the other movable for opening and closing the mold. The rotor is intermittently advanced past an injection station and material is injected into the molds successively to form a continuous length of injection-molded teeth on a ribbon. The fixed mold section of each is secured to the rotor and the movable mold section is pivotably connected to the rotor at the lower end of the movable mold section.

REFERENCES:
patent: 2197968 (1940-04-01), De Mattia
patent: 2279344 (1942-04-01), Reid
patent: 2282308 (1942-05-01), Dahlin
patent: 2511402 (1950-06-01), Firing
patent: 2744289 (1956-05-01), Wanders
patent: 3097395 (1963-07-01), Yoshida
patent: 3196196 (1965-07-01), Burbank

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