Calibration unit for extruded plastic material

Details Calibration unit for extruded plastic material Calibration unit for extruded plastic material

1990-12-04

1992-12-08

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

26417717, 26417719, 2642094, 425192R, 425325, 425377, 4253781, 425461, B29C 4124, B29C 4790

Patent

active

051696509

ABSTRACT:
A calibrating unit for an extruder includes an inner calibrating member, and a plurality of outer calibrating members at least partially surrounding the inner calibrating member and forming a gap therebetween through which a plastic material may be extruded, the plurality of outer calibrating members including a base member and at least a first lateral member. The calibrating unit also includes an integrated joint connecting the first lateral member to the base member. The first integrated joint includes a circular cylindrical hinge pin integrally formed along a longitudinal edge of the first lateral member, and a cylindrical circular bearing shell formed in the base member. The circular cylindrical hinge pin is received within the circular cylindrical bearing shell of the base member so that the first lateral member is rotatably interconnected to the base member.

REFERENCES:
patent: 2587930 (1952-03-01), Uschmann
patent: 3378887 (1968-04-01), Reib et al.
patent: 4100243 (1978-07-01), Wissinger et al.
patent: 4120926 (1978-10-01), Titz
patent: 4685879 (1987-08-01), Purstinger et al.
patent: 4874306 (1989-10-01), Gearhart
patent: 4913863 (1990-04-01), Burrafato et al.

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