Device for controlling the clamping force of a motor-driven inje

Details Device for controlling the clamping force of a motor-driven inje Device for controlling the clamping force of a motor-driven inje

1997-06-06

1998-12-01

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

With protective or reliability increasing features

318432, H02P 300

Patent

active

058443916

ABSTRACT:
A control device for an injection molding machine includes a pattern generator for generating a set pattern of clamping forces. The pattern generating calculates a travel distance of a movable member in the mold clamping system according to the set clamping force and generates the set pattern having an allowable range of deviation that is defined by an upper limit and a lower limit relative to the calculated travel distance. The mold clamping system continuously decreases the clamping such that it falls within the range defined by the allowable range of deviation after the clamping force reaches the value defined by the upper limit.

REFERENCES:
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patent: 4714867 (1987-12-01), Palmin et al.
patent: 5274316 (1993-12-01), Evans et al.
patent: 5313151 (1994-05-01), Ogden et al.
patent: 5341452 (1994-08-01), Ensor
patent: 5362222 (1994-11-01), Faig et al.
patent: 5444341 (1995-08-01), Kneifel II et al.
patent: 5583411 (1996-12-01), Kusano et al.

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