Self-adjusting mold backplate

Details Self-adjusting mold backplate Self-adjusting mold backplate

1994-11-15

1997-12-23

Weber, Thomas R.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For press shaping surface

4254519, 425541, 425406, 100258A, B28B 2182, B29C 3320

Patent

active

057004960

ABSTRACT:
A backplate assembly for supporting the molds of blowmolding machines having plural molds wherein the backplate assembly consists of two planar plates having a resilient elastic compressible cushion disposed therebetween to permit limited self-adjustment of the plates as determined by pressure produced upon the mold halves closing. The cushion is formed by an elongated spirally configured elastic resilient strand located within recesses formed in the plates, and the configuration of the strand may be related to the distribution of compressive forces imposed on the backplate assembly.

REFERENCES:
patent: 3782879 (1974-01-01), Mnilk et al.
patent: 4017239 (1977-04-01), O'Connell et al.
patent: 4648824 (1987-03-01), Aoki
patent: 4753160 (1988-06-01), Baird et al.
patent: 4851176 (1989-07-01), Christiansen et al.
patent: 5059105 (1991-10-01), Baird
patent: 5259752 (1993-11-01), Scolamiero et al.
patent: 5411391 (1995-05-01), Albrecht et al.
patent: 5599566 (1997-02-01), Casolari

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