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
Patent
1996-09-18
1998-11-03
Ryan, Patrick
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
138 38, 138 42, 165142, 249 79, 26432816, 425547, 425552, B29C 3304, B29C 4573
Patent
active
058305157
ABSTRACT:
A mold insert for an injection molding machine has a circumferential liquid conduit groove and a plurality of liquid-receiving bores extending inwardly from the groove. Baffles are removably inserted into the liquid-receiving bores and have heads located in locking engagement with the sidewalls, including the undercut portions thereof, to retain the baffles in their respective liquid-receiving bores. Each baffle has a blade that fits snugly within a liquid-receiving bore to separate the liquid-receiving bore into a liquid inlet passageway and a liquid outlet passageway. Fins project outwardly from opposite faces of the blade to create turbulence in liquid flowing into and out of the liquid-receiving bore, which enhances cooling (or heating) of the mold insert. The baffle is also useful with other solid components having a liquid conduit for cooling purposes and a transverse liquid-receiving bore intersecting the liquid conduit. An improved liquid barrier for use in preventing the flow of liquid in the liquid conduit groove is formed by a dam member substantially identical to the head of a baffle.
REFERENCES:
patent: 4828479 (1989-05-01), Pleasant
patent: 4959002 (1990-09-01), Pleasant
patent: 4966544 (1990-10-01), Mitake
patent: 5261806 (1993-11-01), Pleasant
patent: 5647114 (1997-07-01), Pleasant
Page L-17 of 1986 Product Catalog, published by D-M-E Company, Madison Heights, MI, 1986.
Front sheet snad p. D-13 for Dec. 1995 Price List published by PCS Company, Fraser, MI, Dec. 1995, admitted to show prior art baffle.
Lafferty H. Eugene
Pleasant Ronald E.
Dybvig Roger S.
Leyson Joseph
Pleasant Precision, Inc.
Ryan Patrick
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