Clamping method and apparatus

Details Clamping method and apparatus Clamping method and apparatus

B - Operations, Transporting

29

C

18/704

B29C 45/64 (2006.01) B29C 45/17 (2006.01) B29C 45/67 (2006.01)

Patent

CA 1239263

Abstract of the Invention A clamping method and apparatus for reducing the ram pressure normally required to seal the mold of an injection mold apparatus. A movable mold section is rigidly secured to a flat plate like carriage member mounted for reciprocal movement relative to a stationary mold section. A plate unit is supported between the carriage member and the ram in a floating and axially aligned relation, with the movable mold section located within the perimetric confines of the carriage member and the plate unit. On linear extension of the ram to initially abuttingly engage the plate unit and carriage member the movable mold section is moved into engagement with the stationary mold section whereby the ram clamping force is distributed uniformly in a pyramidal pattern from the ram to the perimetric portions of the mold sections to seal the mold.

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