Closing mechanism for an injection molding machine

Details Closing mechanism for an injection molding machine Closing mechanism for an injection molding machine

1989-05-05

1990-10-09

Look, Edward K.

Expansible chamber devices

Annular working member or annular linearly extending chamber...

Axially extending hollow stem on working member

92 81, 92110, 92112, 92162R, 92165R, 92168, F01B 3100

Patent

active

049613723

ABSTRACT:
A closing mechanism of an injection molding machine has a piston-cylinder unit to be pressurized hydraulically. Two partial strokes can be carried out in the unit, of which the first can be run through faster than the second. A displacement tube (7) extends into a main cylinder chamber (6) and into an inner cylinder chamber (4) of a piston (2) of the piston-cylinder unit. The displacement tube (7) is fastened to an end wall of the main cylinder (1) and is open at its free end. The piston (2) is designed as a plunger and is spaces on all sides from the cylinder wall (5) of the cylinder (1) of the piston-cylinder unit. The piston (2) is guided in a flanged gland (15) which is screwed to the cylinder (1).

REFERENCES:
patent: 2647809 (1953-08-01), Schindler
patent: 2661721 (1953-12-01), Sherwen
patent: 3136223 (1964-06-01), Evans et al.
patent: 3191506 (1965-06-01), Ledeen
patent: 3335642 (1967-08-01), Rosaen
patent: 4791854 (1988-12-01), Banicevic

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