Method for supervision of injection molding by use of waveform o

Details Method for supervision of injection molding by use of waveform o Method for supervision of injection molding by use of waveform o

1987-05-21

1989-12-26

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 405, 425149, 425170, B29C 4577

Patent

active

048896675

ABSTRACT:
A method for the supervision of injection molding including monitoring an internal die pressure of molten resin flowing through a resin passageway in a mold to form a monitored waveform; displaying the monitored wavefrom together with a predetermined reference waveform on a display unit such as a CRT, and comparing the monitored waveform with an allowable value of the reference waveform to determine any abnormality caused in a molding process. The injection molding can be supervised with accuracy on the basis of the reference waveform representing the optimum internal die pressure, thereby increasing the quality of molded articles.

REFERENCES:
patent: 3840312 (1974-10-01), Paulson et al.
patent: 4060362 (1977-11-01), Wilson, III
patent: 4359435 (1982-11-01), Kogure
Siemens Energietechnik 4, Sep./Oct. 1982, pp. 226-229.
Siemens Components 19, Mar. 1981, pp. 46-49.

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