Extruding device for producing honeycomb structure

Details Extruding device for producing honeycomb structure Extruding device for producing honeycomb structure

1996-09-18

1999-08-24

Pyon, Harold

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

26417712, 425380, 425461, 425464, 425467, B29C 4712

Patent

active

059422602

ABSTRACT:
An extruding apparatus for producing a honeycomb structure having cell walls and a skin. The apparatus includes a die (10) and a mask (20). The mask (20) is of an annular shape of an inner diameter (D1) and is located on an annular recess formed by a taper surface (19) and an outlet end surface (18b) of the die. The mask (20) has a top surface (21), which is in contact with an outlet end surface (18b) of the die (10), so that the degree of the opening of feed holes (11a), (11b) and (11c) are controlled by the particular shape of the end surface (21). A change of the mask to the one as shown by a phantom line (30) allows the shape of the top surface to be changed from the one shown by (21) to the one shown by (31), which allows the degree of the opening of the feed holes (11a), (11b) and (11c) to be desirably controlled.

REFERENCES:
patent: 3919384 (1975-11-01), Cantaloupe et al.
patent: 4349329 (1982-09-01), Naito et al.
patent: 4814187 (1989-03-01), Inoue et al.
patent: 5089203 (1992-02-01), Kragle
patent: 5219509 (1993-06-01), Cocchetto et al.
patent: 5256054 (1993-10-01), Cocchetto et al.

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