Hydraulic clamping unit for a molding apparatus

Details Hydraulic clamping unit for a molding apparatus Hydraulic clamping unit for a molding apparatus

B - Operations, Transporting

29

C

18/707

B29C 45/67 (2006.01) B29C 33/20 (2006.01) B29C 49/56 (2006.01)

Patent

CA 1271911

ABSTRACT OF THE DISCLOSURE A hydraulic clamp unit for a molding apparatus has a pair of opposed complimentary mold halves attached accordingly to a pair of opposed platens suspended on roller guides and moving toward each other into engagement of the mold halves to form a mold cavity surrounding a molded article of a ther- moplastic material. The unit is provided with main clamp cylinders of a pull type and having piston rod chambers pressurized to exert pressure on the platens during formation of the article. Rapid movement of the platens is achieved by means of kicker cylinders having piston chambers and piston rod chambers communicating with each other. The main cylinders are locked to one of the platens by means of hydraulic mechanisms.

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