Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1977-08-22
1978-12-26
Briggs, William R.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264328, 425149, 425150, B29F 106
Patent
active
041315960
ABSTRACT:
An apparatus and method for providing a signal that measures the extent of the separation of injection mold dies during the injection of plastic material into the mold cavity and uses this signal to reduce the possibility of flash damage to the mold dies by decreasing the pressure clamping the molds together if the separation exceeds a value that is known to cause flash and/or further utilizes the signal to alter the rate of injection of plastic material.
REFERENCES:
patent: 2433132 (1947-12-01), Lester
patent: 2671247 (1954-03-01), Lester
patent: 3667884 (1972-06-01), Reinfeld
patent: 3773451 (1973-11-01), Bielfeldt et al.
patent: 3976415 (1976-08-01), Hauser et al.
Briggs William R.
Junkins Ernest M.
Logic Devices, Inc.
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