Kobe Steel, Ltd.

Masaharu Shibata

Yasuhiko Fujieda

In a tire vulcanizer configured to perform opening and closing of a mold using an efficient ball screw shaft or the like, a top mold mounting member holding a top mold is lifted and lowered by rotating the ball screw shaft with a driving mechanism to vertically lift and lower a ball nut, and the lifting and lowering of the top mold mounting member is stopped by fixing the ball screw shaft by the de-excitation of an electromagnetic brake connected directly to the ball screw shaft, independently from the driving mechanism. According to such a structure, the opening and closing of the mold can be stopped, even if abnormality of the driving mechanism or the brake occurs.

Tire vulcanizer

A post cure inflator of the present invention is an apparatus for inflating and cooling a vulcanized tire T by sealing high pressure air into the vulcanized tire, and includes an annular rim for gripping the vulcanized tire at a bead portion, a connecting member fixed at one end portion thereof to the rim, a rim supporting member provided in a body frame, and a clamping device provided in the rim supporting member to clamp the connecting member to the rim supporting member unclampably. This construction permits a post cure inflator in which replacement of the rim is easy and an existing rim can be used.

Post cure inflator

In a tire vulcanizer of the present invention, a locking mechanism which secures a top mold and a bottom mold in a closed condition comprises tie rods disposed alongside the top mold, and each having a top end part fixed to a top mold mounting member and a lower end part on which a plurality of grooves are formed one above the other in a vertical direction; through holes formed in a bottom mold mounting member for allowing each of the tie rod to pass through each of the through holes; lock plates capable of engaging and disengaging, along a horizontal direction, with the groove on each tie rod having passed through each through hole, and lock plate shifting mechanisms each opening and closing the lock plates only in a horizontal direction relative to each tie rod. With the configuration as described above, adjustment based on a height of a mold is simplified, while reducing an overall height of the tire vulcanizer.

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Takasago, Japan

Masaharu Shibata