Clamp mechanism for differential pressure thermoformer

Details Clamp mechanism for differential pressure thermoformer Clamp mechanism for differential pressure thermoformer

B - Operations, Transporting

29

C

18/1074

B29C 43/00 (2006.01) B29C 51/00 (2006.01) B29C 51/26 (2006.01)

Patent

CA 1236673

CLAMP MECHANISM FOR DIFFERENTIAL PRESSURE THERMOFORMER ABSTRACT OF THE DISCLOSURE A mechanism for clamping a web of thermoplastic material against the face of a female mold prior to closure of the mold includes a clamping ring assembly mounted on the machine frame for movement relative to the frame in- dependently of the molds. The clamping assembly is driven to and from its web clamping position by a cam mounted on the rock shaft which drives the molds between their open and closed positions and a constant radius section on the cam holds the clamp in its clamping position throughout a substantial portion of the operating cycle.

452019

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