Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire...
Patent
1989-06-08
1990-11-20
Hoag, Willard
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
B29C 3500
Patent
active
049715380
ABSTRACT:
A tire vulcanizing press includes a vertically movable upper die closable over a lower die, a guide roller mounted on support structure of the upper die, a nearly horizontal roller guide way provided on a rear top portion of a press body, a vertical roller guide groove provided with a notch extending upward of the roller guide way and communicating therewith on the front top portion of the press body at the rear of a vertically intermediate portion thereof, a counter-rotatable crank gear, and a crank arm coupling a crank pin mounted at an eccentric position of the crank gear with the upper die support structure. When the press is operated during normal tire production, the crank gear is rotated in one direction, the crank pin is shifted from a bottom dead point to a top dead point, and movement of the crank pin is transferred to the upper die support structure through the crank arm, thus shifting the guide roller from a lower end portion to an upper end portion of the vertical roller guide groove.
REFERENCES:
patent: 2343881 (1944-03-01), Brundage
patent: 3065499 (1962-11-01), Brundage et al.
patent: 3065503 (1962-11-01), Mallory et al.
patent: 3097394 (1963-07-01), Mallory et al.
patent: 3141191 (1964-07-01), Soderquist
patent: 3734656 (1973-05-01), Balle
patent: 3854852 (1974-12-01), Carter
patent: 4725212 (1988-02-01), Singh
patent: 4741682 (1988-05-01), Mauro
Hoag Willard
Mitsubishi Jukogyo Kabushiki Kaisha
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