Extruder head

Details Extruder head Extruder head

1987-11-25

1989-04-25

Hoag, Willard

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

425461, B29C 4718, B29C 4716

Patent

active

048243531

ABSTRACT:
The extruder head has a hydraulic cylinder for the movable upper head member and/or the movable lower head member attached to each side of a stationary head member rigidly whose piston rod is extendable in the direction of the movable head member. Between the free ends of the piston rods and the associated movable head member there is provided a releasable connection means under tension. This connection means comprises at least two radial projections on the piston rod distributed uniformly about the circumference of the piston rod and a passage corresponding to the shape of the projection with a contacting surface in and/or on the associated head member. To loosen or release the connection means the piston rod is rotated about half a partial angle determined by the number of projections.

REFERENCES:
patent: 4137027 (1979-01-01), Ruger
patent: 4358261 (1982-11-01), Ohki
patent: 4548568 (1985-10-01), Herbert et al.
patent: 4619599 (1986-10-01), Herbert et al.
patent: 4652224 (1987-03-01), Golisch
patent: 4666392 (1987-05-01), Gerloff et al.
patent: 4683095 (1987-07-01), Tulonen et al.

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