Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Control means responsive to condition sensing means
Patent
1996-10-30
1998-08-25
Mackey, James P.
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Control means responsive to condition sensing means
425 48, 425 52, B29C 3502
Patent
active
057981230
ABSTRACT:
In a center mechanism of a tire press, which the tire size is changed, the lower limit position of an upper clamp ring is changed to a shaping height corresponding to the size of the exchanged tire only by changing a setting of a controller. Consequently, the work related to the tire size change is facilitated. A bladder is inflated and tightly comes into contact with the inner face of a green tire while lowering the upper periphery of the bladder to the shaping height corresponding to the tire size. The center mechanism includes: an upper clamp mechanism such as an upper clamp ring, that holds the upper periphery of the bladder; a first cylinder for vertically moving the upper clamp mechanism by the reciprocating movement of a piston; a linear sensor for sensing the travel amount of the piston of the first cylinder; and a controller for setting the shaping height as the lower limit position of the upper clamp mechanism and for controlling the reciprocating movement of the piston on the basis of the travel amount.
REFERENCES:
patent: 3659973 (1972-05-01), Yoshida et al.
patent: 4695235 (1987-09-01), Ichikawa et al.
patent: 4950141 (1990-08-01), Maikuma et al.
patent: 5106280 (1992-04-01), Sakaguchi
patent: 5314648 (1994-05-01), Ichikawa et al.
Mitamura Hisashi
Onishi Hisaaki
Sarumaru Shogo
Takebayashi Hiroyuki
Ureshino Kashiro
Kabushiki Kaisha Kobe Seiko Sho
Mackey James P.
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