Tie-rod assembly for an injection molding press

Details Tie-rod assembly for an injection molding press Tie-rod assembly for an injection molding press

1989-10-17

1991-05-21

Heitbrink, Timothy

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Mold motion or position control

264 39, 264238, 425190, 425192R, 4254519, 425595, 425DIG221, B29C 4580

Patent

active

050171208

ABSTRACT:
A tie-rod assembly used in a press having an inside fixed mold end plate, an outside fixed end plate spaced from the inside plate, a movable mold plate between the end plates, and an actuator for displacing the movable mold plate toward the inside mold end plate for pressing tools carried by the mold plates together in a closing direction and for moving the tools apart in an opposite opening direction includes a tie rod extending along an axis in the direction through the movable plate and having a threaded inside end and an outside end and a stationary threaded element carried on the inside end plate and axially aligned with the tie rod displaced by the actuator independently of the movable plate between a use position and a changeover position with the threaded end withdrawn in the opening direction and spaced from the inside end plate, a nut actuated by a rotary drive for screwing the nut in the changeover position from the tie-rod on the threaded element and inside and outside bracing devices engageable between the tie rod ends and the respective end plates for pressing the tie rod ends against the end plates in the use position.

REFERENCES:
patent: 3465387 (1969-09-01), Allard et al.
patent: 3905741 (1975-09-01), Poncet
patent: 3951579 (1976-04-01), Myers et al.
patent: 4025264 (1977-05-01), Hehl
patent: 4285384 (1981-08-01), Wunder
patent: 4473346 (1984-09-01), Hehl
Kunstoff-Plastics, Feb. 1988.

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