Blow molding machine

Details Blow molding machine Blow molding machine

1978-03-20

1980-02-05

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Means responsive to abnormal condition completely stop...

264 401, 264542, 425140, 425150, 425151, 425155, 425163, 425532, B29C 1707

Patent

active

041870654

ABSTRACT:
Means for controlling the action of a blow molding machine of the type having a continuously extruding parison. The control means includes a photocell signal circuit responsive to extrusion of each parison at normal speed to initiate the decompression of a product at the blow molding station and opening and transfer of the mold halves back to the parison station. Should material in the extruder become depleted, the slower parison extrusion time will be detected and initiate signals for an alarm and deactivation of the blow molding machine. Means are also provided for disenabling this alarm and deactivation system if it is desired to "dry cycle" the machine for test purposes without running the extruder.

REFERENCES:
patent: 3217357 (1965-11-01), Martin, Jr.
patent: 3239879 (1966-03-01), Resnick
patent: 3242533 (1966-03-01), Wintriss
patent: 3635622 (1972-01-01), Wechsler
patent: 3759648 (1973-09-01), Hunkar
patent: 4094620 (1978-06-01), Daubenbuschel et al.

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