Plastic article or earthenware shaping or treating: apparatus – Press forming apparatus having opposed press members
Patent
1989-01-30
1990-09-04
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Press forming apparatus having opposed press members
100258A, 100269R, 425451, 425DIG47, B29C 4332, B30B 1524
Patent
active
049540670
ABSTRACT:
A hydraulic press has a press stand; a generally horizontal press plate vertically movably supported in the press stand and arranged for executing forward and return strokes; and a plurality of hydraulic press cylinder units mounted in the press stand above the press plate. Each press cylinder unit has a power cylinder and a plunger slidably received in the power cylinder and extending from the power cylinder to the press plate. There are further provided a plurality of hydrostatic bearings mounted on the press plate; and a chamber defined with each hydrostatic bearing and containing hydraulic fluid. The lower terminus of the plunger projects into the chamber. The hydrostatic bearings constitute a force-transmitting arrangement between the plungers and the press plate and permit a tilting motion of the plungers relative to the press plate. Guide assemblies are mounted at the end of each power cylinder for sealingly and tiltably guiding the plunger.
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patent: 4759280 (1988-07-01), Malashenko
Bushey C. Scott
Fried. Krupp Gesellschaft mit beschrankter Haftung
Woo Jay H.
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