Apparatus for separating mold plates from a casting

Details Apparatus for separating mold plates from a casting Apparatus for separating mold plates from a casting

1992-03-23

1993-06-15

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to close mold

4254501, 4254519, 425595, B29C 3500

Patent

active

052195953

ABSTRACT:
A method and apparatus for separating an upper (12) and lower (14) mold plate of a mold assembly (10) from a preformed substrate or casting (16) by including a mold ejection apparatus (70) having a support surface (76) to receive and support the mold assembly (10). A plurality of clamps (84) pivotally connected to the support surface (76) engage the preformed substrate (16) at spaced apart intervals about the periphery of the preformed substrate (16) to restrain the substrate (16) and lower mold plate (14) against the support surface (76). The apparatus further includes a plurality of secondary hydraulic pumps (98) having a piston (106) and cylinder (108) assembly and a lifting bar (120) pivotally connected to one end of the piston (106). The secondary pumps (98) are supported on the support surface (76) at spaced apart intervals adjacent the periphery of the mold assembly (10). A master hydraulic pump (132) is activated to provide a simultaneous operating force to each of the secondary hydraulic pumps (98) to uniformly separate the upper mold plate (12) from the preformed substrate (16).

REFERENCES:
patent: 3450190 (1969-06-01), Mittermaier et al.

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