Mandrel adjustment system in a plastic resin blow molding machin

Details Mandrel adjustment system in a plastic resin blow molding machin Mandrel adjustment system in a plastic resin blow molding machin

1981-12-07

1983-07-19

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

264541, 425381, 425532, 425454, 425465, 425466, B29D 2304, B29F 306

Patent

active

043941168

ABSTRACT:
A plastic resin blow molding machine to form bottles from a thermoplastic resin forms a tubular parison of plastic resin by extruding the molded plastic from the circular orifice formed between a vertically aligned mandrel and a forming die. The mandrel is vertically adjusted relative to the forming die by an adjustment nut having screw threads which mate with the screw threads of the mandrel. The adjustment nut is rotatably mounted on a plate and is fixed to a ratchet ring having evenly spaced indentations, the ratchet ring being turnable by a ratchet wrench having a spring-loaded pawl.

REFERENCES:
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patent: 2150659 (1939-03-01), Santo
patent: 2702942 (1955-03-01), Michaelis
patent: 3023461 (1962-03-01), Sherman
patent: 3345690 (1967-10-01), Hagen
patent: 3369272 (1968-02-01), Martin, Jr. et al.
patent: 3386132 (1968-06-01), Fischer
patent: 3436952 (1969-04-01), Hajikano
patent: 3470582 (1969-10-01), Martin, Jr.
patent: 3579731 (1971-05-01), Cooper
patent: 4234299 (1980-11-01), Kuenzig et al.

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