Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal...
Patent
1987-02-27
1988-01-12
Hoag, Willard
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
425336, 425388, B29C 4934
Patent
active
047188448
ABSTRACT:
A corrugated mold block for a vacuum mold machine is provided with a face arcuate about a longitudinal axis and corrugated in the longitudinal direction with alternating grooves and lands, said face being formed of sheet metal. A housing is provided about the back of the face and adapted for carriage about an endless path, and reinforcing members are provided which are secured to the face and housing and extend therebetween to maintain the desired shape of the face. Openings extend through the grooves of the face to the back thereof and communicate with vacuum passageways formed by a plurality of arcuate channel members secured to the back of each of the face grooves and communicating with a vacuum port through the housing. The housing further defines a cooling passage therethrough in communication with input and output cooling ports through the housing. The reinforcing members are disposed substantially radial to the arc of the face and include finger portions extending into the lands thereof and openings therethrough which form a part of the cooling passage. A sealant is provided on one side of the mold block and adapted to seal against an adjacent mold block during molding.
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Berns John S.
Dickhut Heinrich
Cullim Machine Tool & Die, Inc.
Hoag Willard
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