Air working system for various drive units of stretch-blow moldi

Details Air working system for various drive units of stretch-blow moldi Air working system for various drive units of stretch-blow moldi

1996-07-18

1998-10-06

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including means to prepare parison

425535, 425540, B29C 4912, B29C 4956, B29C 4962

Patent

active

058173480

ABSTRACT:
In order to stretch an injection-molded preform by a stretching rod in the axis direction and to blow mold it into a hollow product such as a vessel with a predetermined shape in a blow mold, some of the blow air after used is collected in a low-pressure working-air tank set separately from a high-pressure blow-air tank and operating selector valves in a circuit and the collected air is used for some of the working air for an air cylinder for operating units related to stretch-blow molding by air cylinders. To decrease the availability factor of a compressor by collecting used blow air and thereby, make it possible to cut the cost required for compressed air and decrease exhaust noises.

REFERENCES:
patent: 2345082 (1944-03-01), Waseige
patent: 3239879 (1966-03-01), Resnick
patent: 3400636 (1968-09-01), Schneider
patent: 4372735 (1983-02-01), Collette
patent: 4488863 (1984-12-01), Collette
patent: 4648824 (1987-03-01), Aoki
patent: 4790741 (1988-12-01), Takakusaki et al.
patent: 5585066 (1996-12-01), Weiss
patent: 5648026 (1997-07-01), Weiss

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