摘要:
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.
摘要:
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 (1) includes: vertical frames (30a, 30b) which are supported by a lower frame (20); a beam (40) which bridges between the vertical frames (30a, 30b) and is movable in the vertical direction; an upper chuck (45) which is attached to the center of the beam (40), the center corresponding to the center of the beam in the longitudinal direction; and a lower chuck (25) which is attached to the lower frame. When viewed from the vertical direction, a rotating axis of an upper rotating member (47) is positioned at the center of a straight line formed by connecting supporting points where each of the vertical frames (30a, 30b) support the beam (40).
摘要:
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.
摘要:
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.
摘要:
A tire vulcanizing apparatus and a tire vulcanizing method, by which the pressure and temperature of a heating and pressurizing medium to be supplied to the internal space of a raw tire can be controlled without the condition of pressure being affected by the condition of temperature. The tire vulcanizing apparatus has: a medium path, connected to an internal space of a raw tire, for passing a heating and pressurizing medium; a pressure sensor, provided in the medium path, for measuring a pressure of the heating and pressurizing medium; a pressure control valve for controlling a pressure of the heating and pressurizing medium passing through the medium path on the basis of a signal from the pressure sensor; a temperature sensor, provided in the medium path, for measuring a temperature of the heating and pressurizing medium; and a heating unit for controlling the temperature of the heating and pressurizing medium passing through the medium path on the basis of a signal from the temperature sensor, wherein the pressure control valve and the heating unit control the pressure and temperature of the heating and pressurizing medium supplied from the medium path to the internal space of the raw tire respectively and independently.
摘要:
Separable upper and lower rims of a post-cure tire inflator requiring no upper rim replacing operation which requires much time and labor especially when mounting the upper rim, and also no time and labor for holding a lower rim upward when mounting. In the upper and lower rim for holding the bead section of the tire, a high-pressure air is filled in a cured tire discharged from a tire curing press to thereby inflate and cool the tire; therefore at least the upper rim has stairway-like steps having two or more outer diameters fit to the bead diameters of tires of different sizes and formed by extending a small outer diameter on a large outer diameter.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.