Patent application number | Description | Published |
20090139659 | CENTER MECHANISM OF TIRE VULCANIZER AND CONTROL METHOD FOR THE SAME - A center mechanism of a tire vulcanizer is provided with a screwing mechanism provided with a screw shaft and a screw nut screwed onto the screw shaft, a motor for rotating the screw shaft so as to raise and lower an upper ring body, an inverter for controlling the motor, and a mechanical brake for retaining a predetermined position of the upper ring body so that a bladder retains a shaping state. Within a time range from start of a closing action of the upper die to contact between the upper die and the upper ring body, an operation of the mechanical brake is released and position control of the upper ring body by the inverter is started, and at least after the release of the operation of the mechanical brake, a position of the upper ring body is controlled by the inverter. By such a configuration, even when there is an erroneous operation of the brake or incorrect setting, it is possible to prevent damage and breakage of constituent parts and have a simple structure. | 06-04-2009 |
20090155399 | POST-CURE INFLATOR, RIM EXCHANGE METHOD OF THE SAME AND RIM - In a post-cure inflator of the present invention, a rim of a pair of disk shape rims for sandwiching bead portions of a tire has one rim surface and the other rim surface in which a plurality of step portions corresponding to the bead portions of different bead diameters are formed so as to reduce thickness from a center to an outer periphery. A pair of the rims is supported switchably between arrangement in which the one rim surfaces face each other and arrangement in which the other rim surfaces face each other. By such a configuration, it is possible to favorably sandwich the tire even when the bead diameter to be treated is added. | 06-18-2009 |
20110189324 | POST CURE INFLATOR - 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. | 08-04-2011 |
20110200698 | TIRE VULCANIZER - 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. | 08-18-2011 |
20110236514 | TIRE VULCANIZER - In a tire vulcanizer according to the present invention configured to perform opening and closing of a mold by an elevating means 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 with an excitation-free 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. | 09-29-2011 |
20120156317 | CENTER MECHANISM OF TIRE VULCANIZER - In a center mechanism of a tire vulcanizer of the present invention, in order to improve working efficiency and lower total height, after a green tire is vulcanized and patterned and becomes a vulcanized tire, a bladder well is lifted from a bottom position where a lower bead ring is positioned on a lower mold and a bladder is installed in the green tire to a top position where the lower bead ring is positioned above the lower mold and an upper clamp, and the upper clamp, a lower clamp, and the bladder are placed in the bladder well, while heights of the upper clamp and the lower clamp are fixed. | 06-21-2012 |
20120319330 | TIRE VULCANIZER AND TIRE VULCANIZING METHOD - In a tire vulcanizer having two sets of portions, each of which includes a lower mold, an upper mold, and a center mechanism provided with a bladder, a nitrogen gas heated in a first heating device is supplied to an interior of the bladder of the center mechanism which is placed on the upstream side in the circulating direction of the nitrogen gas. The nitrogen gas discharged from the interior of the bladder of the center mechanism is used for vulcanization and patterning and a temperature thereof is lowered. However, this nitrogen gas is heated again in a second heating device, so that the temperature is increased. Therefore, the nitrogen gas heated in the second heating device is supplied to an interior of the bladder of the center mechanism which is placed on the downstream side in the circulating direction of the nitrogen gas. | 12-20-2012 |
20130062803 | TIRE VULCANIZING METHOD, AND TIRE VULCANIZER - A tire vulcanizing method reduces consumption energy and increases productivity of vulcanization. This method involves supplying an inert gas to an internal space of the tire via a supply pipe, discharging the gas from the internal space via a return pipe, and supplying the gas from the return pipe to the supply pipe by a rotation type circulation device. A heating device heats the circulated gas. An internal outlet gas temperature sensor detects a temperature of the gas in the return pipe. A controller decreases a rotating speed of the circulation device when the return pipe gas temperature is a rotating speed decrease temperature or more. | 03-14-2013 |
20130233066 | TIRE TESTING DEVICE - To effectively suppress a shift of a rotating axis of an upper chuck with respect to a rotating axis of a lower chuck due to a separating force. A tire testing device ( | 09-12-2013 |