Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1980-09-08
1982-04-20
Hall, James R.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264109, 425141, B29J 500
Patent
active
043258980
ABSTRACT:
A platen press, and a method of operating same, for the planar and parallel pressing of particle board and like materials comprises a press bed and a press plate, one of which is movable and is provided with a hydraulic system for developing the pressing force. A pair of spacer bars are provided on the press bed to flank the particle board and a set of bearing cylinders urges the movable press member to clamp the movable member against the spacers, thereby imparting a bend or distortion to the movable press member. According to the invention, this distortion is measured and the measured value is used to operate the main press cylinders to eliminate the distortion and ensure parallel compression of the particle-board mass.
REFERENCES:
patent: 2956307 (1960-10-01), Fahrni
patent: 3860381 (1975-01-01), Pesch
G. Siempelkamp GmbH & Co.
Hall James R.
Ross Karl F.
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