Closed loop hydraulic/mechanical leveling system

Details Closed loop hydraulic/mechanical leveling system Closed loop hydraulic/mechanical leveling system

1984-07-11

1985-05-07

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

425214, B30B 1516, B29C 300

Patent

active

045155518

ABSTRACT:
A fluid powered press comprising a first platen and a second platen with at least one of the platens being reciprocably movable along a predetermined axis relative to the other platen and having motor means for so moving the movable platen, and a leveling system therefor. The leveling system comprises a plurality of hydraulic leveling piston and cylinder units mounted on one of the platens with each of the leveling units including a projecting rod member connected to the piston of the respective leveling unit and movable with the piston axially relative to the cylinder of the respective leveling unit. Reciprocal fluid powered motor units mounted on the other platen coact with wedge locks for selectively coupling the rod members to the other platen. Means are provided for maintaining the leveling unit cylinders filled with hydraulic fluid; and conduit means communicate pairs of the leveling units together in a closed loop system, with such leveling units when coupled to the other platen resisting tilting movement of the platens relative to one another during operation of the press.

REFERENCES:
patent: 3154814 (1964-11-01), Fike
patent: 3570060 (1971-03-01), Stephenson
patent: 3850564 (1974-11-01), Hutter
patent: 4053276 (1977-10-01), Ahriveiler et al.
patent: 4240778 (1980-12-01), Korytko

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