Traction apparatus for tubular material

Details Traction apparatus for tubular material Traction apparatus for tubular material

1991-04-19

1992-10-27

Tentoni, Leo B.

Plastic article or earthenware shaping or treating: apparatus

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

226172, 226173, 226174, 226178, 264 401, 264 407, 2642091, 425162, 425377, B29C 4734

Patent

active

051587815

ABSTRACT:
Apparatus for handling large diameter horizontally extruded plastic tubing includes a number of driven endless belts positioned around the path of travel of the extrusion to transport the extrusion while it cools. The belts are individually driven either by hydraulic or electric motors, the speed of travel of each belt is continuously monitored and a feedback system including a microprocessor controls the driving motors so as to maintain the speed of travel of the extrusion at an adjustable controlled value. The belt positions are hydraulically controlled to accommodate tubing of a range of sizes and the level of the hydraulic fluid in its reservoir, its pressure and its temperature are also monitored by the microprocessor. In the event of component fault or failure, the microprocessor returns the affected belt or belts to manual control so that the product line need not be shut down.

REFERENCES:
patent: 3620432 (1971-11-01), Emery
patent: 4882104 (1989-11-01), Dobrowsky

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