Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under...
Patent
1991-05-02
1992-07-14
Hoag, Willard
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
425190, B29C 4507, B29C 4562
Patent
active
051298163
ABSTRACT:
The plasticizing and injecting unit comprises at least one hydraulic advance-retract actuator that is provided with external screw threads, which are screwed into internal screw threads of a bore formed in a carrier and supply block. Means for locking the advance-retract actuator in the bore in that the interengaging screw threads are wedged against each other comprise a plurality of lock screws, which are parallel to the injection axis and disposed on a circle that surrounds the bore in which the actuator is received. The screws can be tightened to different degrees so that the carrier and supply block and the advance-retract actuator are biased in mutually opposite senses and any deviations from a coaxial arrangement of the interengaging screw threads can thus arbitrarily be changed in its magnitude and direction. As a result, the stresses which result in the overall structure from a deviation from a coaxial arrangement can be minimized by a simple manipulation.
REFERENCES:
patent: 4731005 (1988-03-01), Hehl
patent: 4753589 (1988-06-01), Hehl
patent: 4850841 (1989-07-01), Hehl
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