Die for molding honeycomb structure

Details Die for molding honeycomb structure Die for molding honeycomb structure

1996-09-30

1999-05-25

Ryan, Patrick

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Including auxiliary shaping means associated with molding...

26417712, 425381, 425461, 425465, 425466, 425467, B29C 4712

Patent

active

059068396

ABSTRACT:
The present invention provides a die for molding a honeycomb structure, which can be molded without causing bending on a cell grid and which can readily cope with changes of shrinkage percentage of the product. The invention also provides a honeycomb structure, which has no bending on the cell grid and has high strength. The die according to the present invention includes a metal die 1, having a feed hole forming unit 14 provided with feed holes 15 and a slot forming unit 11 provided with slots 12, and a guide ring 2, which has an abutment surface 25 placed face-to-face to a part of the metal die 1 via a clearance sector 22. The slot forming unit includes an outer peripheral slot forming unit 130 and a main-body slot forming unit 160, and there is provided a protruded surface 17 protruded in extruding direction between a main body end surface 16 and an outer peripheral end surface 13. The shortest linear distance "d" between the protruded surface 17 and the guide ring 2 is greater than the clearance distance "c" of the clearance sector.

REFERENCES:
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patent: 4381912 (1983-05-01), Yamamoto et al.
patent: 4915612 (1990-04-01), Gangeme et al.
patent: 5089203 (1992-02-01), Kragle
patent: 5219509 (1993-06-01), Cocchetto et al.
patent: 5256054 (1993-10-01), Cocchetto et al.
patent: 5466415 (1995-11-01), Brundage et al.
patent: 5574957 (1996-11-01), Barnard et al.

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