Rotary roll extruder

Details Rotary roll extruder Rotary roll extruder

1989-03-10

1990-03-27

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Plural wear or shaping surfaces mounted for alternative use

425185, 425186, 425190, 425194, 425374, 425381, 425466, B29C 4732

Patent

active

049116312

ABSTRACT:
A rotary roll extruder which performs shaping of material to be extruded such as raw rubber, or the like by ejecting the material to be extruded through a mouth piece by means of an extruding roll. This extruder comprises mouth piece moving means for moving a mouth piece in a radial direction of an extruding roll to make the mouth piece approach, or separate from, the circumferential surface of the extruding roll, mouth piece positioning means for positioning the mouth piece when the mouth piece is held apart from the extruding roll, and mouth piece stocking means for preliminarily stocking various kinds of mouth pieces. Shaping of the material to be extruded is effected when the mouth piece has been brought close to the circumferential surface of the extruding roll by the mouth piece moving means and it has been positioned by the mouth piece positioning means. However, for the exchange of the mouth piece, the mouth piece is separated from the extruding roll by the mouth piece moving means, and is exchanged with one of the mouth pieces stocked in the mouth piece stocking means. Thereafter, the new mouth piece is brought close to the circumferential surface of the extruding roll by the mouth piece moving means, and is positioned by the mouth piece positioning means. The mouth piece exchange work is executed automatically without the aid of any human labor.

REFERENCES:
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patent: 4174200 (1979-11-01), Hoj
patent: 4299789 (1981-11-01), Giesbrecht
patent: 4416605 (1983-11-01), Konno et al.
patent: 4576563 (1986-03-01), Harada et al.
patent: 4718770 (1988-01-01), Christy
patent: 4744745 (1988-05-01), Harada et al.

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