Machine for bell-forming ends of thermally plasticized pipes

Details Machine for bell-forming ends of thermally plasticized pipes Machine for bell-forming ends of thermally plasticized pipes

1995-05-02

1997-04-15

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

425372, 425DIG218, B29C 5706

Patent

active

056207190

ABSTRACT:
The invention relates to a machine for bell-forming ends of thermally plasticized pipes, including a vise for blocking pipes having jaws which are mobile along a vertical plane, wherein the introduction and unloading of the pipes occurs tangentially to the plane. The machine is provided with a forming device having a pressurized-fluid forming chamber, internally containing a forming chuck. The forming chamber exhibits an elastic wall which is strengthened during the pressurization operation by rigid striking elements borne directly by the jaws of the vice, and is fed by a single pipe for feeding fluid for pressurization of the forming chamber and for cooling the chuck.

REFERENCES:
patent: 3672804 (1972-06-01), Dalik
patent: 3776682 (1973-12-01), Parmann
patent: 3849052 (1974-11-01), Gordon
patent: 3923443 (1975-12-01), Emery et al.
patent: 3932094 (1976-01-01), Korff et al.
patent: 4008028 (1977-02-01), Ronden et al.
patent: 4266926 (1981-05-01), Gordon
patent: 4323337 (1982-04-01), Korff et al.
patent: 4353860 (1982-10-01), Gordon
patent: 4545951 (1985-10-01), Gordon

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