Apparatus for controlling plasticizing process of in-line screw-

Details Apparatus for controlling plasticizing process of in-line screw- Apparatus for controlling plasticizing process of in-line screw-

1981-02-02

1982-04-20

Gruber, Felix D.

Boots, shoes, and leggings

264 401, 425145, B29F 106, G06F 766

Patent

active

043262554

ABSTRACT:
In apparatus for controlling a plasticizing process of a resin of an in-line screw-type injection molding machine, a position of the screw is continuously detected in accordance with the movement thereof and a control function is determined on the basis of one of various factors, such as resin heating energy, shearing energy, injection pressure and filling speed, which determine a temperature distribution of a resin to be injected. The operating condition, particularly the number of revolutions and the back pressure of the screw, is controlled on the basis of the control function and the screw position so as to uniformalize the temperature distribution of the resin.

REFERENCES:
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patent: 3767339 (1973-10-01), Hunkar
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patent: 3860801 (1975-01-01), Hunkar
patent: 3870445 (1975-03-01), Hold et al.
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patent: 3941534 (1976-03-01), Hunkar
patent: 4222725 (1980-09-01), Rodgers, Jr.

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