Extruder for rubbery materials

Details Extruder for rubbery materials Extruder for rubbery materials

Filed on

1994-07-25

Date issued

1996-06-25

Examiner

Woo, Jay H.

Patent Class

Plastic article or earthenware shaping or treating: apparatus

SubClass

With apparatus assembly or dismantling means or with idle part

SubSubClass

Plural wear or shaping surfaces mounted for alternative use

Other Related Categories

264 39, 425186, 425192R, B29C 4712

Type

Patent

Status

active

Patent number

055294758

Description

ABSTRACT:
An extruder for rubbery materials includes an extruding unit having a die holder. A horizontal lead-through groove is formed in the die holder for slidably arranging a die plate therein. A rubbery material is extruded through the die plate in a predetermined direction to form a strip rubber member with a predetermined cross-section. A storing device is arranged on one side of the extruding unit, for temporarily storing a plurality of die plates to be subsequently used on a storing table in accordance with a predetermined use priority. The storing device delivers a next die plate from the storing table to a waiting position along the extension line of the lead-through groove. A moving device is operative when the die plates are to be changed, for moving a current die plate together with the next die plate at the waiting position, along the lead-through groove in a direction toward the other side of the extruding unit. The moving device thereby ejects the current die plate from the lead-through groove and moves the next die plate to an extruding position in the lead-through groove.

REFERENCES:
patent: 3130468 (1964-04-01), McFall
patent: 4082487 (1978-04-01), Rapp
patent: 4379685 (1983-04-01), Tada et al.
patent: 4449907 (1984-05-01), Yonezawa et al.
patent: 4555228 (1985-11-01), Nishiike et al.
patent: 4652410 (1987-03-01), Inoue et al.
patent: 4895507 (1990-01-01), Yano
patent: 5190772 (1993-03-01), Conselvan et al.
Patent Abstracts of Japan, vol. 7, No. 68 (M-201) 19 Mar. 1983.
Patent Abstracts of Japan, vol. 15, No. 235 (M-1125) 17 Jun. 1991.

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