Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Toroidal or annular female shaping means and coacting means...
Patent
1981-09-03
1982-12-28
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Toroidal or annular female shaping means and coacting means...
425 33, 425 38, B29H 502, B29H 506
Patent
active
043659454
ABSTRACT:
An apparatus for vulcanizing a vehicle tire comprises upper and lower platens supporting mold shell sections which when mounted one on the other form a mold enclosing a mold cavity. The upper platen is moved first vertically and then laterally with respect to the lower platen by a bull gear crank. A vulcanizing bladder is stretched by a piston rod of a fluid-dynamic piston-cylinder assembly through the opening of a vehicle tire casing disposed in the mold cavity to facilitate loading of the casing in the mold cavity.
The apparatus is also provided with a second fluid actuated piston-cylinder assembly to move the upper platen while maintaining the bladder standing sufficiently, in relation to the lower plane of the mold, in such a way as to adapt the press even for unloading tires having dimensions larger than those of the usual tires for which the apparatus was originally built.
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patent: 4035117 (1977-07-01), Nakogawa et al.
patent: 4332536 (1982-06-01), Singh et al.
Flint, Jr. J. Howard
Societa Pneumatici Pirelli S.p.A.
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