Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Simultaneous severing and shaping – or severing while work...
Patent
1982-05-17
1984-07-17
Czaja, Donald E.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Simultaneous severing and shaping, or severing while work...
144 12, 144 30, 264138, 264145, 264177R, 425298, 425461, B28B 714, B27M 300
Patent
active
044605323
ABSTRACT:
The present invention is directed to a unique die (11, 111) that can be employed in apparatus (10) for shaping a workpiece (14, 114) according to the method of driving the workpiece at relatively high speeds through the die (11, 111) which remains fixed. The die has a throat (40, 140) which extends longitudinally through a body portion (35, 135) and opens through a crenelated mouth (45, 145). The mouth is provided with opposed noses (46, 48, 146, 147 and 148) which delineate the distal extent of the mouth with respect to the body portion of the die. Cutting edges (50, 51, 54, 55, 150, 151, 154, 155, 173 and 174) extend rearwardly from the noses, with each pair of adjacent cutting edges joining to define a crotch (59, 60, 159, 178 and 179). The resulting plurality of crotches delineate the longitudinally proximal extent of the mouth with respect to the body portion of the die. Each cutting edges is disposed so that the entering angle .theta. falls within the range of from 25.degree. to 50.degree..
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Czaja Donald E.
Housel James C.
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