Hydraulic refractory press including floating upper and lower pl

Details Hydraulic refractory press including floating upper and lower pl Hydraulic refractory press including floating upper and lower pl

1982-10-26

1984-03-27

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Female mold and opposed coaxial dynamic press members

425411, 425422, 425167, 425150, B30B 1104, B30B 132

Patent

active

044391293

ABSTRACT:
A hydraulic press for refractory material including a mold box rigidly supported by a press frame. A lower plunger assembly positioned below the mold box and includes a lower crosshead and at least one plunger adapted to extend upwardly into a vertical mold cavity in the mold box. An ejection cylinder assembly supported by the press crown is provided for causing selective vertical movement of the lower crosshead. An upper plunger assembly is positioned above the mold box and includes an upper crosshead and at least one upper plunger supported by the crosshead and adapted to extend downwardly into the mold cavity. A hydraulic cylinder is provided for supporting the upper crosshead for vertical movement with respect to the mold box and the lower crosshead. The hydraulic cylinder is fixedly connected to the lower crosshead, and a ram is housed in the cylinder and adapted to selectively drive the upper crosshead downwardly.

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patent: 4373889 (1983-02-01), Brown
patent: 4392800 (1983-07-01), Apuzzo

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