Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Feed control of material en route to shaping area
Patent
1993-11-15
1995-05-02
Bushey, Charles S.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Feed control of material en route to shaping area
425186, 425220, 425362, 425367, 426512, B29C 4300
Patent
active
054113903
ABSTRACT:
A machine for producing configurated products including a rotary die roll having die cavities therein and a pair of feed rollers for feeding viscous product into the die cavities. The feed rollers may be easily moved away from the die roll and the die roll may be rolled out of the machine to allow replacement thereof. Relief members extend from a backing knife between adjacent die cavities of each row as the die roll rotates. These pressure relief pads reduce the amount of product contained in the pressure chamber and thereby reduce the amount of working of the material as it is forced into the die cavities. The machine includes a front shearing knife having removable and replaceable shearing inserts. The feed rolls of the machine include longitudinally extending tapered recesses with opposed recesses of the respective feed rolls being staggered at the inlet of the pressure chamber to cause particulates within the feed product to be more easily fed into the pressure chamber with less resulting damage. The motor which drives the feed rolls is a torque controlled, variable speed motor which lessens the stresses associated with feeding large amounts of product through the pressure chamber and/or feeding highly viscous product through the pressure chamber.
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