Multiple station, multiple clamp assembly blow molding machines

Details Multiple station, multiple clamp assembly blow molding machines Multiple station, multiple clamp assembly blow molding machines

1984-08-21

1987-06-16

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Plural female molds and means to shape parison at each...

4254514, 4254516, B29C 4938

Patent

active

046733477

ABSTRACT:
A multiple station, multiple clamp assembly rotary blow molding machine for the manufacture of plastic bottles and the like incorporating novel toggle actuation means for the clamp assemblies, novel actuation means for the pre-finish mechanism and novel actuation means for parison stretching. The novel toggle actuation means for the clamp assemblies eliminate the need for separate linear or rotary hydraulically driven clamp actuators for each clamp assembly. Rather, a single rotary actuator is required for the mold closing station and a second single rotary actuator is required for the mold opening station. The toggle linkage includes adjustment means for fine adjusting the length of each toggle linkage. The clamp assemblies include spring means for assuring complete overcentering action of the toggle linkages to thereby provide a positive latching or locking of the clamp assemblies and molds in the closed position.

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patent: 3872203 (1975-03-01), Yoshikawa et al.
patent: 4589838 (1986-05-01), Ziegler

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