Extruding device for extruding plastic tubing with a measuring d

Details Extruding device for extruding plastic tubing with a measuring d Extruding device for extruding plastic tubing with a measuring d

1992-10-16

1994-09-13

Bushey, Charles S.

Plastic article or earthenware shaping or treating: apparatus

Immersed shaping orifice discharging directly into liquid...

73622, 264 23, 264 401, 425 70, 425 71, 4251742, 4253261, 425388, 425392, 425141, B29C 4700

Patent

active

053463790

ABSTRACT:
An extruding device for extruding plastic tubing includes an extruder with an outlet and a cooling device connected to the outlet of the extruder. The cooling device has a water-filled chamber and a vacuum tank that is directly connected downstream to the water-filled chamber such that a sealed passage for the plastic tubing between the water-filled chamber and the vacuum tank is provided. The water-filled chamber has a water-filled cooling part and a water-filled measuring part. A water- and vacuum-conveying connection is provided between the measuring part and the vacuum tank. A calibrating sleeve with an inner wall surface is connected within the cooling part and is completely immersed in water for cooling purposes. The calibrating sleeve pulls the extruded plastic tubing against its inner wall surface. A measuring device for measuring the wall thickness of the plastic tubing is connected with the measuring part. The measuring part has at least one ultrasonic measuring head that is radially positioned relative to the plastic tubing. The measuring head measures the plastic tubing through the water within the measuring part.

REFERENCES:
patent: 3856595 (1974-12-01), Skobel
patent: 4137028 (1979-01-01), Reitemeyer et al.
patent: 4740146 (1988-04-01), Angelbeck
patent: 4750873 (1988-06-01), Loe et al.
patent: 5085567 (1992-02-01), Neumann
patent: 5120212 (1992-06-01), Reiber et al.
W. Feistkorn and K. Sensen; "Automatik-. . . Kaschierfolie"; 1987; pp. 472-474.

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