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公开(公告)号：JP2515117B2
公开(公告)日：1996-07-10
申请号：JP4498487
申请日：1987-02-27
Applicant: BRIDGESTONE CORP
Inventor： OZOEGAWA SHUNEI , SUZUKI KENJI , OKA KIKUO
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公开(公告)号：JPS6317010A
公开(公告)日：1988-01-25
申请号：JP16155986
申请日：1986-07-08
Applicant: BRIDGESTONE CORP
Inventor： HISATOMI HIDEO , IWATA TOSHIRO , OKA KIKUO
Abstract: PURPOSE:To make it possible to accurately and surely determined the vulcanizing time for obtaining the optimum quality and performance of a tire with any size without giving any damage to the tire by a method wherein the minimum vulcanizing value in the tire is selected and the vulcanization of the tire is brought to an end when said value exceeds the set target value for bringing the vulcanization of the tire to an end. CONSTITUTION:The position ss having the minimum degree Ms of volcanization is selected by a control unit 3 on the basis of the distribution Mnm of the degree of vulcanization, which is calculated in the direction A of a tiregage represented by, for example, 7 positions x. the minimum vulcanizing value Mv is obtained by the control unit 3 from the values at the position x>=s having the minimum degree Ms of vulcanization and at the positions x, which are one or more respectively on both sides of xs, on the distribution Mnm of the degree of vulcanization at the time a3 after the start of vulcanization. The minimum vulcanizing value MT in a tire 5 is selected by comparing minimum vulcanizing values MVm at the respective positions in the tire 5 in the control unit 3. the set target value Mc, which is inputted in the control unit 3 in advance in order to bring the vulcanization of the tire to an end, is compared with the minimum vulcanizing value MT in the tire. When the minimum vulcanizing value MT exceeds the set target value Mo for vulcanization, a signal C3 to shift the end of vulcanization is outputted.
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公开(公告)号：JPS63209906A
公开(公告)日：1988-08-31
申请号：JP4498487
申请日：1987-02-27
Applicant: BRIDGESTONE CORP
Inventor： OZOEGAWA SHUNEI , SUZUKI KENJI , OKA KIKUO
Abstract: PURPOSE:To enhance the production efficiency and to reduce the scattering in products by a method wherein the starting time of the molding of a green tire is calculated by the signal, which is sent from a tire vulcanizer to a controlling device when a green tire in the tire vulcanizer reaches the predetermined vulcanizing stage, and the molding is started. CONSTITUTION:When the vulcanizing operation of a vulcanizer is finished at the time T0, a vulcanized large size tire is carried out of said vulcanizer and, in turn, a large size green tire N1 molded in a molder is carried in the vulcanizer so as to start the vulcanization of the time N1 at the time T1 and the starting signal is sent to a controlling device. And, the controlling device calculates the starting time of the molding of a green tire N2 so as to send calculated results in sequence of time to molds remaining on standby from the controlling device. Accordingly, a plurality of vulcanizers can be actuated with high efficiency. In addition, since the temperature of a green tire at the start of vulcanization is constant, the scattering in qualities can be made smaller.
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公开(公告)号：JPS63139708A
公开(公告)日：1988-06-11
申请号：JP28852586
申请日：1986-12-02
Applicant: BRIDGESTONE CORP
Inventor： OZOEGAWA SHUNEI , OKA KIKUO , HISATOMI HIDEO
Abstract: PURPOSE:To decide the optimum tire vulcanizing time precisely, and to shorten the vulcanizing time and improve the quality and performance of a tire by estimating temperatures at one or more of positions in the tire from the temperatures of a vulcanizing mold and the inside of a bladder at every short time of vulcanization during the vulcanization of the tire and arithmetically operating the minimum degree of vulcanization. CONSTITUTION:The inside of a platen section 12 is supplied with a pressure heating fluid 10 at all times, the inside of a bladder 7 is fed with a heating pressure fluid 8 at high pressure, and a tire 5 is heated from the platen section 12 side while being pressed to the vulcanizing mold 6 side and heated by the pressure heating fluid 8 in the bladder 7. The measurement of the time and the measurement of applied pressure in the bladder 7 are started from the start time of the pressure heating of the tire 5, and control by a time mode by a control unit 3 is commenced. Temperature distribution and the distribution of the degree of vulcanization in the gage direction of the tire 5 are computed at one or more of positions in the tire from temperature in the vulcanizing mold 6 and the bladder 7 at every short time of vulcanization, thus arithmetically operating the minimum degree of vulcanization in the tire 5.
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