Abstract: A steam done type vertical tire press includes an upper dome for holding an upper mold through an upper mold mounting member and a lower dome for holding a lower mold through a lower mold mounting member. The upper dome and the lower dome are abutted at respective connection edges. A dome ring is engagable with the connection edges of the upper and lower domes. A central mechanism is vertically movably located at a central position of the lower mold mounting member. A mold clamping cylinder has a pressure rod connected to the lower mold mounting member. A cylinder support extends downwardly from the lower dome through a press base for supporting the mold clamping cylinder. A mold height adjusting device is provided outside a dome space defined by the upper and lower domes for adjusting a height between the upper and lower molds.

Abstract: A slide falling prevention device in a tire vulcanizer including a vulcanizer frame, a fixed lower die fixedly located on the vulcanizer frame, a slide adapted to be lifted and lowered along the frame, a movable upper die retained to the slide and adapted to be vertically opened and closed relative to the lower die, a vertically moving member provided at a central position of the slide for opening and closing the upper die, a hollow pressure member provided at the central position of the slide for applying pressure to the upper die, said hollow pressure member being located diametrically outside the vertically moving member in such a manner as to be concentrical to and separate from the vertically moving member, a pressure device mounted to the vulcanizer frame in such a manner as to surround the hollow pressure member, an upper die height adjusting mechanism for connecting the slide with the hollow pressure member; and a movable pressure member provided in the pressure device and a locking member disengageab

Abstract: A vertically opening and closing type tire vulcanizer in which a plurality of vulcanizing molds installed on a vulcanizer frame are individually driven. A mold clamping mechanism and a mold height adjusting mechanism which are simplified in terms of construction are provided. A high rigidity heat insulating plate for transmitting a clamping force is interposed between a top slide and an upper mold.

Abstract: An unloader machanism for removing a cured tire from a lower mold of a vulcanizing machine and which includes a horizontally movable frame body, a fluid cylinder fixedly mounted on the frame body and a grappling unit being vertically movable by the fluid cylinder coaxially of the lower mold of the machine. The grappling unit includes a plurality of angularly uniformly spaced fingers being movable into an opening defined by an upper bead portion of the tire for engaging the upper bead portion. Under the application of a lifting force of the fluid cylinder, the fingers strip the tire directly from the lower mold and an upper ring of a bag well unit disposed centrally of the lower mold.

Abstract: A central mechanism in a tire vulcanizing press including a shaping bladder, a hot pressure supply source, an upper bladder clamp supporting center post, a lower bladder clamp supporting post through which is inserted the center post vertically movably, a mechanism for vertically independently moving both posts, and a latch mechanism for preventing the descent of the support post during vulcanizing press for a tire, the latch mechanism being driven selectively in opening and closing directions relative to the support post by means of a latch opening/closing device, the latch opening/closing device including a drive mechanism capable of moving vertically along a vertical axis, member for converting a vertical linear motion of the drive, a mechanism into a rotational motion around the vertical axis and means for transmitting the thus -obtained rotational motion to the latch mechanism.

Abstract: A tire vulcanizer which includes a lower mold assembly secured to a press base, an upper mold assembly held movably up and down on a press side frame and provided to be opened and closed with respect to the lower mold assembly, a molding bladder expansible with respect to a center mechanism of the lower mold assembly and pressurized heating medium supplying means, wherein for maintaining a parallelism of the upper and lower mold assemblies, a torsion shaft for maintaining the parallelism which is movable up and down and rotatable about an axis in synchronism with the upper mold assembly is mounted at a position parallel to the press base, at a right angle to the side frame and not interfering with the upper and lower mold assemblies.

Abstract: A green tire vulcanizing press including a lower die having a heat source, an upper die capable of being opened and closed relative to the lower die and having a heat source, a shaping bladder received in a bladder well disposed in a central part of the lower die, and a hot pressure medium supplied into the bladder, the bladder well is made movable vertically and an upper clamp ring for the shaping bladder is held stationary while a lower clamp ring is provided vertically movably, whereby the shaping for a green tire as well as the separation of the bladder from the tire and removal of the tire after the vulcanizing press work are performed through vertical movements of the lower clamp ring and the bladder well under a fixed state of the upper clamp ring.

Abstract: A mold clamp mechanism for a tire press with upper and lower molds, the clamp mechanism including a plurality of rod locking holes formed around the press center of the upper and/or lower mold; a corresponding plurality of clamp rods vertically received in rod receptacle holes in a fixed mold support structure, each clamp rod having a T-shaped head portion protrudable into a locking hole in the mold and lockable therein when the clamp rod is turned a 90 degree angle; a drive cylinder having rod operating arms connected to the piston rod thereof for movements toward and away from the clamp rod; rod rotating members mounted on the clamp rod and on one of the rod operating arms and engageable with each other when the piston rod is advanced toward the clamp rod to turn the same a 90 degree angle; and rod pull members mounted on the clamp rod and the rod operating arms and engageable with each other when the piston rod is further advanced toward the clamp rod after a 90 degree angle of rotation so as to clamp the

Abstract: A tire press has a feature decoupling the mold closing force torque from the platens 3 and 22 supporting the press mold halves 4 and 11 using a spherical seat located between the platens 3 and 22 and the press member supplying the closing force to provide self-alignment of the mold halves 4 and 11 upon closing of the press.

Abstract: A chuck assembly for use in a loader of a tire vulcanizer including a ring-shaped chuck main casing having an inner cylinder of a bore long enough to allow entry of a press center mechanism including a center post, a bladder and so forth, an outer cylinder concentrically surrounding the periphery of the inner cylinder and an upper cover connecting the inner and outer cylinders, rails radially aligned between the inner and outer cylinders in the main casing, a plurality of chucking paddles held by sliders slidably extending on a respective one of the rails for movement along the rails, and a ring-shaped chuck cam rotatably disposed about a rotational axis of the inner cylinder in the chuck main casing, wherein slider shafts of one of the respective paddles are slidably engaged with working cam grooves radially aligned in the chuck cam.

Abstract: A method and apparatus for unloading a tire from a tire vulcanizer wherein following the vulcanization of the tire within upper and lower molds the tires withdrawn from a bladder through tire support arms travelling in a given trajectory and is then transferred on to a device which in turn conveys the tire to the next succeeding step, the method utilized in accordance with the apparatus including the steps of forwarding the tire support arms in a horizontal direction to correspond to sides of the bottom of the tire to be removed, elevating the arms in a vertical direction together with the tire for removing the tire therefrom and transfering the tire onto the conveying device via a path different from that for the forwarding arms while the tire is being held in a horizontal position.

Abstract: The specification describes a tire vulcanizer adapted for use in performing the shaping and curing operation of a green tire efficiently and safely. The vulcanizer is characterized by means for lifting or lowering an upper ring, which includes a rotary means consisting of a ball screw shaft and nut cylinder, and a mechanism adapted to render said ball screw shaft rotate freely upon receiving a signal which is generated upon the completion of the shaping and curing operation.

Abstract: A conveying method for conveying green tires from storing devices, disposed near building machines, to curing machines and attaching them to the curing machines is disclosed wherein a green tire delivery demand signal is emitted, from a specific curing machine among a plurality of curing machines, to a control system which stores the corresponding relationships between the respective storing devices and the respective curing machines and the quantities and kinds of green tires stored in the storing devices. The control system which receives this demand signal sends a signal, indicating the curing machine which has emitted the demand signal and the corresponding specific storing device, to an automatic truck supporting and carrying thereon a mechanism which is capable of withdrawing a green tire from the storing device, having it suspended thereon, and loading it onto the curing machine.

Abstract: A charging device for a vulcanizing press has a cylinder disposed concentrically with a vulcanizing mold, a movable piston vertically movable through the cylinder, a piston rod secured to the piston, and a gas-tight cylindrical bladder of a flexible material held between the upper end of the piston rod and the top of the cylinder.

Abstract: A method for curing tires especially adapted for curing very large-sized or so-called giant tires which have not been generally in such demand as to warrant mass production characterized by holding the curing mold in a stably closed locked condition during the curing process under purely mechanical force in contrast to hydraulic force such as heretofore employed, comprising the steps of placing a mold unit composed of upper and lower mold halves and containing a semi-shaped "green" tire upon a stand of a mechanical press having a plunger mechanism supporting an upper housing member moved by means of a crank gear, driving the crank gear to a first position located ahead of its lower dead center a predetermined amount whereby the plunger mechanism and housing section are smoothly and continuously moved through an arcuate path from a raised position to a lowered position at which the plunger mechanism and housing member are adjacent the upper mold half, adjusting the position of the plunger mechanism relative to