Abstract: The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor, which is an organic compound containing at least one of nitrogen or sulfur having a lone pair of electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.

Abstract: The present invention provides a soft magnetic powder composite core for an electric apparatus produced with soft magnetic particles having electric insulating layers on the surfaces thereof, wherein said electric insulating layers are formed by mixing said soft magnetic particles with an insulating layer-forming solution which comprises a phosphating solution and a rust inhibitor, which is an organic compound containing at least one of nitrogen or sulfur having a lone pair of electrons suppressing the formation of iron oxide and surfactant, and drying the treated soft magnetic particles at a predetermined temperature. The soft magnetic powder composite core is excellent in iron loss and magnetic flux density.

Abstract: After loading a green tire in a tire vulcanizing machine and before shaping, bead portions of the green tires are centered relative to bead rings of upper and lower metal molds and are sequentially inserted into the bead rings precisely in parallel thereto by the same extendable/retractable sectors and chucks which are movable vertically. An apparatus preferable for practicing the aforementioned method includes a plurality of such sectors for centering and holding a bead portion of the green tire, slide and linkage mechanisms for extending and retracting chucks to which the sectors are mounted, and a cylinder mechanism for vertically moving the chucks so as to insert the bead portion of the green tire centered and held by the sectors into a bead ring of a tire metal mold.

Abstract: A method and an apparatus for vulcanizing an elastomer product, such as automobile tires, wherein the elastomer product is placed in a vulcanizing chamber in a mold steam at an elevated pressure is supplied to the vulcanizing chamber to heat and pressurize the elastomer product until the elastomer product reaches a prespecified temperature or for a prespecified period of time, the steam supply is stopped and a pressurizing gas, at a pressure not lower than the steam supply pressure, is supplied to the vulcanizing chamber until the end of a heating period, said steam being blown in and supplied from an upper position of the center of the vulcanizing chamber in a horizontal direction or in an inclined downward direction, said steam being blown in and supplied from a lower position of the center of the vulcanizing chamber toward an upper region of the vulcanizing chamber.

Abstract: A center mechanism for a tire mold comprising a mushroom-shaped bladder, a clamp ring for clamping a lower opening edge of the bladder, a post cylinder for extending and contracting a height of the bladder, a movable stopper for receiving a depressing force against the clamp ring which is generated by heating medium introduced into the bladder upon vulcanizing a tire, and a bladder elevator cylinder for elevating and lowering the clamp ring upon loading and unloading a tire.

Abstract: A vulcanizing apparatus having penetrating passages connected and communicated with a jacket portion of a mold member. An upper open end portion of one of the penetrating passages is connected to a steam inlet pipe while an upper open end portion of the other penetrating passage is connected to a steam outlet pipe. The connections and communications of the jacket portion with the steam inlet and outlet pipes can be simultaneously and efficiently completed in a single operation. Inner tubes are slidably disposed along the penetrating passages and pressed against the connecting surface of the mold, and appropriate pressure is applied on the seal packing member on the connecting surface independent from the clamping force of the upper mold in order to ensure reliable sealing.

Abstract: An ejector in a tire vulcanizing machine for ejecting the condensate of vulcanizing steam accumulated within a bladder to the outside of a tire includes a drain extraction pipe elevatably and rotatably supported in the machine and extending through a lower ring and a guide ring for clamping a lower edge portion of the bladder, a drain suction pipe extending horizontally from the top end portion of the drain extraction pipe and having its tip end portion bent downwards, an elevation drive and a rotary drive for the drain extraction pipe, and a rotary limit adjusting mechanism provided in the rotary drive. Preferably, the rotary drive is made up of a rotary shaft of a rotary cylinder mounted to the bottom end portion of the drain extraction pipe so as to be supported in an axially movable manner and a body of the rotary cylinder surrounding the rotary shaft.

Abstract: An upper metal mold clamp device in a tire vulcanizing machine of the type that an upper metal mold is detachably fixed to a bolster by rotating clamp rods vertically penetrating through the bolster and provided with clamp claws at their bottom ends, is improved. Drive units rotate the respective clamp rods independently of rotation of the other clamp rods. Nuts are mounted onto the bolster plate in an unrotatable but vertically movable manner, and threadedly engaged with male screws at the upper portions of the clamp rods. Hollow spaces for accommodating the clamp claws are formed around the clamp rods on the bottom surface of an upper heat plate held in contact with the upper metal mold.

Abstract: A metal mold centering and clamping device in a tire vulcanizing machine has hydraulic cylinders each having a piston rod equipped with a non-directional bearing at its top portion. The cylinders are mounted on a vulcanizing machine frame close to an outer circumference of a metal mold. An outside portion of a centering member is connected to the vulcanizing machine frame via parallel links to form a parallel linkage, and a bottom portion of the same centering member is connected to the piston rod via a link. On the inside of the centering member and on the outer circumference of a lower metal mold are respectively formed centering surfaces opposed to each other. In addition, at an upper portion of the inside surface of the centering member is formed a clamp claw adapted to be engaged with the edge of the lower metal mold.

Abstract: A green tire inserting apparatus with which upper and lower bead portions of a green tire can be inserted correctly and surely into bead rings of upper and lower metal molds. An upper bead portion and a lower bead portion of a green tire are gripped in a true-circular shape by separate segments to be pushed respectively into bead rings of upper and lower metal molds in a vulcanizing machine. Cylinders and linkages for radially expanding the segments and pushing the bead portions into the bead rings are provided in an upper portion and a lower portion of a center mechanism of a vulcanizing machine. There are provided stoppers for presetting a segment expansion limit, which are adjustable according to variation of a bead diameter of a green tire, and bead height regulators, which are adjustable according to variation of a height of a green tire. The adjustment can be made to be automatic.

Abstract: An improved tire loading mechanism of a tire cooler in a tire vulcanizing machine is proposed to save time and human labor, to prevent jamming of a screw portion and to enhance economy of the machine. The tire loading mechanism is composed of a main shaft pivotably supported from a rotary table and rotationally driven by a drive source, an outer cylinder mounted to the main shaft so as to be relatively displaceable in an axial direction via screw threads and having an upper bead ring support flange at its lower end, and a housing mounted to the lower end of the main shaft via disengageably fitting claws and having a lower bead ring support flange at its upper end. A disengageable fitting rod for stopping rotation of the outer cylinder is provided on the rotary table at a position opposed to a vertical groove on the surface of the outer cylinder. An arrangement provided between the main shaft and the outer cylinder fixedly secures the outer cylinder to the main shaft upon rotational air cooling of the tire.

Abstract: The known center mechanism in a tire vulcanizing machine is improved in that the center mechanism comprises condensate ejection means which can be accommodated within a member disposed in the center mechanism and which can be moved between the member and a condensate stagnating portion, a sleeve movable vertically within an upper ring by an operation of a pneumatic cylinder and adapted to be engaged with a part of the upper ring at its end portion to restrain a raised position of the upper ring, whose fixed height with respect to a rod of the pneumatic cylinder is variable, and a rotary member for restraining the position of the lower ring, whose engagement length with a receiving plate for the lower ring can be varied by continuous rotation thereof, and which can be fitted to and disengaged from a support member therefor through rotation by a predetermined amount.

Abstract: A method of and an apparatus for molding a belt for transmitting power, comprise mounting a cylindrical unvulcanized rubber sheet on a mandrel, selecting a necessary mandrel of a plurality of mandrels on which unvulcanized rubber sheets are mounted, moving the mandrel to a cord layer forming unit, winding a cord on the cylindrical unvulcanized rubber sheet mounted on the mandrel, moving the cord wound mandrel to a laminated body forming and cutting unit, winding an unvulcanized rubber sheet on the cord wound mandrel to form a laminated body, cutting the laminated body, moving the cut laminated body to an unvulcanized rubber sheet mounting unit, and taking out the belt.

Abstract: A controller for winding an unvulcanized rubber sheet suitable for the formation of tires, transmitting belts and the like comprises a cylindrical drum rotated by a motor for winding the unvulcanized rubber sheet thereon, a conveyer for feeding the unvulcanized rubber sheet on the drum, a data processor for calculating a ratio of peripheral velocities of the drum and the feeding conveyer and a feeding quantity of the unvulcanized rubber sheet on the basis of previously inputted data and a sequence control unit responsive to an output of the data processor for controlling the sequence of operation of the movable portions of the controller, i.e. the sequence according to which each element of the controller for winding the unvulcanized rubber sheet and the motors are operated, which sequence is established according to a predetermined order.

Abstract: A method of and an apparatus for molding a belt for transmitting power, comprise mounting a cylindrical unvulcanized rubber sheet on a mandrel, selecting a necessary mandrel of a plurality of mandrels on which unvulcanized rubber sheets are mounted, moving the mandrel to a cord layer forming unit, winding a cord on the cylindrical unvulcanized rubber sheet mounted on the mandrel, moving the cord wound mandrel to a laminated body forming and cutting unit, winding an unvulcanized rubber sheet on the cord wound mandrel to form a laminated body, cutting the laminated body, moving the cut laminated body to an unvulcanized rubber sheet mounting unit, and taking out the belt.

Abstract: A cutting device for use in cutting a cylindrical material around a mandrel into annular bodies of the desired width. This device has a first moving table to move in the axial direction of the mandrel, a second moving table to move on the first moving table in the radial direction of the mandrel, a cutter support carrying a first cutter adjustable in position in the radial direction of the mandrel and/or a second cutter adjustable in the axial direction of the mandrel, and a control unit with a device for detecting the position of each moving table, a device for receiving output signals from the detecting device and comparing the position with position data set beforehand and a driving circuit to move each moving table according to output signals from the comparing device.

Abstract: In a filter press having filter frames arranged parallel to each other so that they may be opened and closed, a liquid-feed metallic member, positioned at a side portion of the filter frame for feeding liquid to be processed to each filter chamber formed between adjacent filter frames, is fixedly secured to one of two links pivotably mounted with pins onto the respective adjacent filter frames in such manner that in response to opening and closing of the filter frames the liquid-feed metallic member may be automatically engaged with and disengaged from recessed portions of the filter frames. These recessed portions communicate with said filter chamber via filter cloths.

Abstract: An improved forming apparatus for a breaker layer to be used in a radial tire is described herein. The apparatus essentially comprises a drum device (D), a press contact device (A), first and second breaker material folding-wrapping devices (B) and (C), means for rotating said drum device (D), and means for moving said respective devices (A), (B) and (C) in the axial direction relative to said drum device (D) and for fixing them at predetermined positions. The drum device (D) includes a plurality of segments which have a width of their outer circumferential surfaces approximately equal to the width of the breaker layer to be formed, which can form a substantially cylindrical press contact surface with their outer circumferential surfaces, and which can expand and contract the diameter of said cylindrical contact surface.