Plastic article or earthenware shaping or treating: apparatus – Dough divider type including trap chamber – Rotating trap chamber pickup
Patent
1975-10-28
1977-04-12
Lazarus, Richard B.
Plastic article or earthenware shaping or treating: apparatus
Dough divider type including trap chamber
Rotating trap chamber pickup
B29F 100
Patent
active
040172422
ABSTRACT:
A thermosetting injection molding machine includes an injector chamber, a distribution platen, four distribution nozzles, and a mold heating platen. A thermosetting material flows from the injector chamber to two crossed distribution chambers each of which extends from edge to edge completely through the distribution platen. Liquid coolant passages extend through the distribution platen along both sides of each of the distribution chambers. The distribution nozzles include cores which block the ends of the distribution chambers and which carry the thermosetting material through the mold heating platen to the mold. The distribution nozzles also include jackets having a greater coefficient of heat conductivity than the cores for maintaining all but the tip of the cores adjacent the mold at a temperature below the curing temperature of the thermosetting material. A removable mold for the machine includes a mold cluster adjacent each of the four distribution nozzles. The mold clusters each include a plurality of mold cavities and a runner for carrying the thermosetting material from its associated distribution nozzle to its associated mold cavities. By this arrangement, a multiple nozzle distribution system and a mold heating system are provided by the machine completely independently of the mold to simplify mold design.
REFERENCES:
patent: 2871517 (1959-02-01), Allard
patent: 2878515 (1959-03-01), Strauss
patent: 3533594 (1970-10-01), Segmuller
patent: 3763293 (1973-10-01), Nussbaum
patent: 3876356 (1975-04-01), Fazekas et al.
Lazarus Richard B.
The McDowell-Wellman Engineering Company
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