Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – For extrusion or injection type shaping means
Patent
1992-12-11
1994-07-26
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
For extrusion or injection type shaping means
425192R, 425574, B29C 4517
Patent
active
053323831
ABSTRACT:
An injecting unit for use in an injection molding machine comprises an arrangement for locking an axially movable plasticizing cylinder to a carrying block and for locking a feed screw to a motor for-rotating the feed screw, which is adapted to be coupled to the motor in that the feed screw is inserted into a profiled coupling section of the motor. The feed screw is axially displaceable for injecting the plastic material. The plasticizing cylinder is adapted to be locked at a stop of the carrying block by screw threads, which are provided on the plasticizing cylinder and are centered on the longitudinal axis of the cylinder, and a nut, which is screwed on the screw threads and rotatable by a drive engaging the periphery of the nut. When the plasticizing cylinder has thus been locked, the feed screw is locked to the feed screw motor. As a result, the plasticizing cylinder and the feed screw can reliably be locked and unlocked by simple arrangement, which can be automatically controlled.
REFERENCES:
patent: 4278354 (1981-07-01), Hehl
patent: 4846652 (1989-07-01), Hehl
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