Machine for manufacturing extruded tubes

Details Machine for manufacturing extruded tubes Machine for manufacturing extruded tubes

1990-04-23

1992-04-07

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

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

Control means responsive to product weight or dimension

264 407, 2642095, 425150, 425169, B29C 4792

Patent

active

051023253

ABSTRACT:
The machine has a tube extrusion head, an entrainment device arranged downstream of the extrusion head along the extrusion direction, and a device for checking the outer diameter of the tube. The device for checking the outer diameter of the tube includes a pneumatic gauge which is interposed between the extrusion head and the entrainment device and is operatively connected to an electronic control unit which acts on the entrainment device to adjust the tube entrainment speed as a function of the outer diameter of the tube to be obtained.

REFERENCES:
patent: 2940126 (1960-06-01), Sheridan
patent: 3125616 (1964-03-01), Cook et al.
patent: 3502752 (1970-03-01), Brown
patent: 3982440 (1976-09-01), Groleau et al.
patent: 4069292 (1978-01-01), Herrington et al.
patent: 4520672 (1985-06-01), Saint-Amour
patent: 4597729 (1986-07-01), Singh et al.
patent: 4882104 (1989-11-01), Dobrowsky
patent: 4886438 (1989-12-01), Borger et asl.

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