Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1992-08-25
1995-02-28
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
264326, 425 29, 425 33, 425 48, 425 58, B29D 3006
Patent
active
053934806
ABSTRACT:
In a vulcanization press of the B.O.M. type, a vulcanization chamber has respective end edges (5a, 5b) connected to a disc (6) movable upon command of an actuator (8) and a disc (9) which is fixed relative to said actuator. The movable disc is fastened to a grasping head (17) provided with quick release pins (20), integral with the end of a drive rod (7) operable by a lower piston (11) contained in the actuator. The fixed disc is engaged by radially retractable latches (29) to a grasping ring (28) fastened to the actuator. The raising of the movable disc is stopped due to the chamber tensioning. The disc descent is stopped by two semi-cylindrical elements (12a, 12b) movable close to the drive rod, acting in abutment on an upper piston (15) contained in the actuator.
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Pirelli Coordinamento Pneumatici S.p.A.
Vargot Mathieu D.
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