Kabushiki Kaisha Kobe Seiko Sho

Kobelco Stewart Bolling, Inc.

Hiroyuki Takebayashi

Hisashi Mitamura

Kashiro Ureshino

Hisaaki Onishi

Yasuhiko Fujieda

Katsumi Ichikawa

Shogo Sarumaru

Masaki Naoi

Kenji Kubo

Kotaro Ozaki

An unloader for a tire vulcanizer includes a linear motion guide rail fixed vertically to a main frame of a tire vulcanizer; a slider movably engaged with the linear motion guide rail; a movable carriage having the slider so as to elevate along the linear motion guide rail; a revolving suspension member which is attached to the movable carriage and has revolving rods vertically supported by bearings; and a chuck boom which is provided to the revolving rods so as to be turnable in the horizontal direction and supports the chuck mechanism.

Unloader for tire vulcanizer

A bladder clamping device for a tire vulcanizing press is disclosed in which a lower ring on which a lower end portion of a bladder is fitted remains fixed to allow the lower end portion of the bladder to be clamped in a condition in which it has been fitted firmly by an operator. The bladder clamping device for a tire vulcanizing press comprises a lower ring and a clamping ring located on the inner side and the outer side relative to each other at a central portion of a lower mold of the tire vulcanizing press for cooperatively clamping a lower end portion of a bladder, and a hydraulic cylinder having a rod connected to the clamping ring for moving the clamping ring upwardly and downwardly relative to the lower ring.

Bladder clamping device for tire vulcanizing press

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.

Center mechanism of tire press

A center mechanism for a tire vulcanizer having a first cylinder whose stroke can be detected with a simplified structure achieves reduction in cost and improvement in working efficiency upon maintenance. The center mechanism expands, while the first cylinder 1 moves downwardly, a bladder 5 into close contact with an inner face of a green tire. A downward stop position of the first cylinder 1 is set in advance by a linear sensor 14. The stroke amount of the first cylinder 1 is detected by a stroke bracket 12 having a stroke portion 12a extending downwardly in parallel to the first cylinder 1 from within a stem 8 and provided so as to advance into the stem 8 together with a cylinder rod 1a, and a linear sensor 14 for detecting the stroke amount of the first cylinder 1 from the stroke portion 12a of the stroke bracket 12 remaining outside the stem 8.

Center mechanism for tire vulcanizer

A tire press in which a pair of upper and lower molds are opened/closed and squeezed by an operation of a crank mechanism is disclosed. Especially, the tire press is improved in the aspects of its machine accuracy, strength, size, and maintenance. The tire press has: a pair of upper and lower molds; a base for supporting the lower mold; side frames on both sides of the base; a side slot vertically extended in each of the side frames; a top slide which slides along the side slots and holds the upper mold; and a crank mechanism for moving the top slide only in the vertical direction. The crank mechanism includes: a crank gear; a lever attached to the crank gear and whose front and is positioned on the outer side of the outer diameter of the crank gear; and a link connecting a crank fulcrum at the tip of the lever and the top slide sliding along the side slots. The side slot vertically extends parallel to a vertical central line crossing the center of rotation of the crank gear and the crank fulcrum. Projected in the central portion through the pair of upper and lower molds are adjusted to an optional height.

Tire press

A tire vulcanizing system comprising (a) a tire vulcanizing press having a plurality of molding stations (b) a tire loader for loading tires onto the molding stations and (c) a tire unloader for unloading tires off of the molding stations, wherein the tire vulcanizing press comprises a fixed frame upon which the fixed molds of each molding station are mounted, a displaceable frame upon which the displaceable molds of each molding station are mounted, a tie-rod arranged between the molding stations and connecting the fixed frame to the displaceable frame, lifting cylinder for vertically displacing the displaceable frame along the tie-rod with respect to the fixed frame, half blocks for securing when necessary the displaceable frame to the tie-rod, thereby securing the displaceable frame to the fixed frame, and clamping means for forcibly clamping said displaceable molds to said fixed molds during tire vulcanization.

Growing community of inventors

Takasago, Japan

Hiroyuki Takebayashi