Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or...
Patent
1981-04-02
1983-02-08
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
264 403, 264529, 264532, 425529, 425530, B29C 1707
Patent
active
043727352
ABSTRACT:
This relates to a blow molding operation wherein centering rods are associated with preforms at least during the initial portion of the blowing cycle wherein the preforms are primarily axially elongated and wherein the freely suspended lower end of each preform must be guided against radial movement. In order to assure that the associated preform centering rods will remain in centering position with respect to the preforms at all times and will not engage the preforms so as axially to stretch the preforms, a control is provided for coordinating the advance of the preform centering rods with the introduction of blowing gas into the preforms, and thus with the axial elongation of the preforms due to internal blowing pressure.
REFERENCES:
patent: 3244778 (1966-04-01), Ninneman
patent: 3412188 (1968-11-01), Seefluth
patent: 3865530 (1975-02-01), Jesselallee et al.
patent: 4035455 (1977-07-01), Rosenkranz et al.
patent: 4042657 (1977-08-01), Ostapchenko et al.
patent: 4196165 (1980-04-01), Michl
Brown Charles E.
Silbaugh Jan H.
The Continental Group Inc.
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