WO2011074460A1 - Circuit pneumatique de dispositif d'essai de pneu, dispositif d'essai de pneu, et procédé d'essai de pneu - Google Patents

Circuit pneumatique de dispositif d'essai de pneu, dispositif d'essai de pneu, et procédé d'essai de pneu Download PDF

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Publication number
WO2011074460A1
WO2011074460A1 PCT/JP2010/072057 JP2010072057W WO2011074460A1 WO 2011074460 A1 WO2011074460 A1 WO 2011074460A1 JP 2010072057 W JP2010072057 W JP 2010072057W WO 2011074460 A1 WO2011074460 A1 WO 2011074460A1
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WIPO (PCT)
Prior art keywords
tire
air
pressure
temperature
test
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PCT/JP2010/072057
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English (en)
Japanese (ja)
Inventor
徹 岡田
将雄 村上
浩一 本家
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株式会社神戸製鋼所
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Publication of WO2011074460A1 publication Critical patent/WO2011074460A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • G01M17/021—Tyre supporting devices, e.g. chucks

Definitions

  • the present invention relates to a pneumatic circuit used in a tire testing device such as a tire uniformity machine, a tire testing device including the pneumatic circuit, and a tire testing method for testing a tire using the pneumatic circuit.
  • a tire test for determining the quality of a tire is performed by measuring the uniformity (uniformity) of the tire after the product has been manufactured.
  • the tire test is generally performed in the following procedure using a test apparatus disclosed in Patent Document 1.
  • the tire test apparatus of Patent Document 1 includes a pneumatic circuit that adjusts and supplies compressed air supplied from a factory air source to a tire seated on a rim, and the tire test is performed after the tire is inflated. Done.
  • This pneumatic circuit is provided with two systems of pipes that branch off in the middle.
  • One is a pipe of a bead seat system for inflating the tire in a short time and mounting the tire on the rim, and the other is a pipe of a test system used when testing the tire. Then, by switching between the bead seat system pipe and the test system pipe using a switching valve, the tire can be inflated through two pipe paths.
  • the tire that has flowed from the upstream of the inspection line is sandwiched between rims that are divided vertically.
  • the tire is inflated in a short time using the pipe of the bead seat system.
  • the air pressure of the compressed air supplied to the tire using the pipe of the bead seat system is generally higher (for example, about 400 kPa) than the test pressure (test air pressure) at the time of the tire test.
  • the tire is held at the bead seat pressure for about 1 second including the pressure rise time.
  • the flow path of the compressed air is switched from the bead seat system piping to the test system piping using a switching valve.
  • a pressure regulating valve is provided in the middle of the piping of this test system, and high-pressure compressed air can be reduced to a test pressure (for example, about 200 kPa). Therefore, the compressed air is supplied through the piping of the test system, so that the air pressure in the tire is adjusted to the test pressure.
  • the tire uniformity is measured by pressing the drum against the tire held at the test pressure and measuring the repulsive force generated in the tire using a load measuring device provided on the drum.
  • a servo pressure regulator may be used as shown in Patent Document 2.
  • the air pressure in the tire under test fluctuates even a little, the measurement result of uniformity greatly fluctuates. Therefore, it is important to keep the air pressure in the tire constant at the test pressure so that defective products are not put on the market and good products are not mistakenly determined as defective products.
  • the air pressure may decrease or rarely increase during the test.
  • Such a change in the air pressure in the tire may be as small as about 0.5 kPa or as large as about 1 kPa.
  • the change in the air pressure in the tire greatly affects the measurement result of uniformity.
  • Uniformity is measured by measuring the change in the repulsive force of the tire during one rotation of the tire.
  • the uniformity is measured by adding the change in the repulsive force due to this pressure change to the fluctuation characteristics of the repulsive force of the tire itself. Will be.
  • the phase relationship of the overlapping of the fluctuation characteristics varies depending on the measurement timing, so that the measurement result may be different at each test. Therefore, there is a possibility that the repeated stability of the test apparatus cannot be reliably determined, and it may be difficult to ensure the quality as the test apparatus / test line.
  • the servo pressure adjustment valve disclosed in Patent Document 2 is excellent in pressure adjustment accuracy but has low response. Therefore, even if the servo-type pressure regulating valve can cope with a gradual and steady fluctuation in air pressure, it is responsive enough to adjust the tire pressure in a timely manner within a tire test time of only about 1 second. Does not have.
  • an expensive one such as a servo-type pressure regulating valve is used, there is a problem that the price of the tire testing device increases. Therefore, it is not realistic to adjust the air pressure in the tire which fluctuates during the tire test with a tire test apparatus using a servo-type pressure regulating valve as in Patent Document 2.
  • the present invention has been made in view of the above-described problems, and by making the temperature of the air supplied to the tire higher than the outside air temperature, it is possible to suppress the fluctuation in air pressure that occurs during the tire test.
  • the object is to provide a pneumatic circuit of the device.
  • Another object of the present invention is to provide a tire testing apparatus and a tire testing method that can perform a tire test with high accuracy.
  • the present invention takes the following technical means. That is, the present invention is a pneumatic circuit of a tire testing apparatus including an air supply source that supplies air to a tire mounted between a pair of rims, and the temperature of the air supplied from the air supply source to the tire An air temperature raising mechanism for making the temperature higher than the temperature is provided.
  • the pneumatic circuit adjusts the pressure of the air supplied to the tire from the air supply source to a bead air pressure for inflating the tire and mounting the tire on a rim or a test air pressure used during a tire test lower than the bead air pressure.
  • the air temperature raising mechanism includes an adjustment valve and is configured to heat the air so that the temperature of the air supplied to the tire with the bead air pressure is higher than the outside air temperature.
  • the temperature of the air in the tire which has been high, is higher than the normal temperature, but is lower than that immediately after flowing into the tire with bead air pressure.
  • the temperature of the air in the tire when the test air pressure is set is normal temperature. It becomes below (below outside temperature). In other words, the temperature of the air in the tire immediately before the start of the tire test is lower than the temperature of the tire or rim that is normal temperature.
  • the tire test is performed in a state where there is a difference between the temperature of the air in the tire and the temperature of the tire or the rim (outside air temperature), the heat of the tire or the rim is transmitted to the air in the tire.
  • the temperature of the air in the tire rises and the pressure in the tire changes during the tire test. For example, when compressed air of 200 kPa is contained in tires or pipes by 0.05 m 3 , it is assumed that the temperature of the air rises by 1 ° C. from 25 ° C. to 26 ° C. during a measurement time of 1 second.
  • the temperature of the air in the tire may be equal to or lower than the normal temperature even when the difference between the bead air pressure and the test air pressure is large. Therefore, the temperature of the air at the test air pressure during the tire test is adjusted by preheating the high-pressure air of the first bead seat system in advance and compensating for the temperature drop when the bead air pressure is changed to the test air pressure. , It can be near the outside air temperature.
  • the air temperature raising mechanism can employ a configuration having a tank capable of storing air from the air supply source and a heat exchanger for heating the air in the tank.
  • the tank and the heat exchanger By providing the tank and the heat exchanger in this way, a large amount of air can be stored in the tank, and the air can be preheated by the heat exchanger therein. That is, the tire can be inflated by instantaneously supplying a large amount of heated air to the tire at high pressure, and the fitting characteristics (adhesion) between the tire and the rim can be improved.
  • the tire test apparatus provided with the above-described pneumatic circuit, by adjusting the temperature of the air supplied to the tire, it is possible to suppress the fluctuation of the air pressure generated during the tire test and to accurately measure the tire uniformity. .
  • the present invention also includes a step of inflating the tire by supplying air adjusted to bead air pressure to the tire and mounting the tire between a pair of rims, and a pressure lower than the bead air pressure on the tire mounted between the rims.
  • the pneumatic circuit of the tire testing apparatus of the present invention it is possible to suppress the fluctuation of the pneumatic pressure that occurs during the tire test by making the temperature of the air supplied to the tire higher than the outside air temperature.
  • the tire test apparatus and the tire test method of the present invention it is possible to accurately test a tire while suppressing fluctuations in air pressure that occur during the tire test.
  • a pneumatic circuit 1 according to an embodiment of the present invention and a tire testing apparatus 2 provided with the pneumatic circuit 1 will be described with reference to the drawings.
  • the tire testing apparatus 2 according to the present invention performs product inspection such as uniformity on the tire T that is finished with the product.
  • a uniformity machine is used as the tire testing apparatus 2.
  • Such a tire testing apparatus 2 has a configuration as shown in FIG. 1, for example.
  • the tire testing apparatus 2 includes a frame 3 provided in a tower shape on a floor surface, a pair of upper and lower tire shafts 4 and 5 attached to the frame 3, and these A pair of upper and lower rims 6 and 7 that are provided on the tire shafts 4 and 5 and fix the tire T are provided. These tire shafts 4 and 5 are disposed so as to be rotatable around the vertical axis. Further, a drum (not shown) having a simulated road surface formed on the outer peripheral surface is provided on the side of the tire T fixed by the rims 6 and 7. The drum can be driven and rotated about the vertical axis and can move horizontally so that the simulated road surface can be brought into contact with the tire T.
  • the tire shafts 4 and 5 of the tire testing device 2 are an upper tire shaft 4 provided on the upper side of the frame 3, and a lower tire shaft 5 that is coaxial with the upper tire shaft 4 and that can be moved up and down with a distance downward. ,have.
  • An upper rim 6 is provided at the lower end of the upper tire shaft 4, and a lower rim 7 is provided at the upper end of the lower tire shaft 5.
  • the upper and lower rims 6 and 7 are configured so that the tire T can be sandwiched and fixed between the upper and lower rims 6 and 7 by bringing the upper and lower tire shafts 4 and 5 closer to each other.
  • the tire shafts 4 and 5 or the drum are provided with a load measuring device for measuring the force generated in the running tire T, and the uniformity of the tire T can be measured.
  • the tire test apparatus 2 is provided with a pneumatic circuit 1 that adjusts the air pressure in the tire T by supplying compressed air into the tire T or discharging the compressed air from the tire T.
  • the pneumatic circuit 1 includes a pipe extending from the air supply source 10 into the tire T. This pipe communicates with the inside of the tire T through an air supply port 9 opened to the lower side of the air flow path 8 provided so as to penetrate the inside of the upper tire shaft 4 vertically.
  • the pneumatic circuit 1 can circulate compressed air into the tire T through the air flow path 8 and the air supply port 9.
  • the basic configuration of the pneumatic circuit 1 is directed to adjusting the compressed air generated by the air supply source 10 to a predetermined air pressure and supplying it to the tire T.
  • the pneumatic circuit 1 includes two routes to the tire T. One is a bead seat system 11 that inflates the tire T in a short time and presses the bead of the tire T against the rims 6 and 7, and the other is a test system 12 that is used when testing the tire T.
  • the air supply source 10 side is the upstream side and the tire T side is the downstream side.
  • the compressed air circulated through the bead sheet system 11 is adjusted to an air pressure (bead air pressure) of about 400 kPa, and the compressed air circulated through the test system 12 is about 200 kPa lower than the bead sheet system 11 ( The test air pressure is adjusted.
  • the bead seat system 11 and the test system 12 branch on the way from the air supply source 10 to the tire T, are adjusted to their respective air pressures, and then merge into one pipe again.
  • the test system 12 and the bead sheet system 11 showing this embodiment will be described in detail with reference to FIG.
  • the pneumatic circuit 1 when the pneumatic circuit 1 is viewed from the air supply source 10 side (upstream side) to the tire T side (downstream side), the pneumatic circuit 1 has two systems on the downstream side of the air temperature raising mechanism 21. It is branched to. One path is a bead sheet system 11 and the other path is a test system 12.
  • route until it branches toward the downstream side from the air supply source 10 is common, and the air which adjusts the air pressure in the bead seat system
  • the test system 12 is provided with a pressure regulating valve 13, a supply / discharge valve 14, a switching valve 15, a shutoff valve 16, and a pressure detection unit 17 in order from the upstream side to the downstream side.
  • the bead seat system 11 is provided with a bead pressure adjusting valve 22, a switching valve 15, a shutoff valve 16, and a pressure detection unit 17.
  • the shutoff valve 16 and the pressure detection unit 17 are provided in common for the test system 12 and the bead seat system 11.
  • the air supply source 10 is a supply source of factory air pressurized by a compressor (not shown).
  • the air supply source 10 generates compressed air that is equal to or higher in pressure than the air pressure (bead air pressure) when the tire T is inflated through the bead seat system 11.
  • An air filter 18 that collects dust and the like flowing from the air supply source 10 is provided on the downstream side of the air supply source 10.
  • a pressure gauge 19 for checking the pressure of compressed air generated by the air supply source 10 is provided on the downstream side of the air filter 18.
  • the pressure adjustment valve (test pressure adjustment valve) 13 is for adjusting the compressed air in the test system 12 to a predetermined pressure, and is composed of a pressure regulator. Further, a bead pressure adjusting valve 22 having the same configuration as the test pressure adjusting valve 13 is provided in the pipe of the bead seat system 11. The high-pressure compressed air generated by the air supply source 10 is reduced to bead air pressure (for example, 400 kPa) by the bead pressure adjusting valve 22.
  • the switching valve 15 switches the flow path of the compressed air between the test system 12 side and the bead seat system 11 side, and switches the air pressure in the tire T between the bead air pressure and the test air pressure.
  • the switching valve 15 of this embodiment operates (is in an ON state)
  • compressed air whose pressure is adjusted to bead air pressure is supplied into the tire T from the pipe of the bead seat system 11.
  • the switching valve 15 is not operated (is in an off state)
  • compressed air whose pressure is adjusted to the test air pressure is supplied into the tire T from the pipe of the test system 12.
  • the shutoff valve 16 is a directional control valve provided on the downstream side of the switching valve 15.
  • the flow path of the compressed air is shut off by switching the shutoff valve 16, and the compressed air can be contained in the pipe that reaches the tire T on the downstream side of the shutoff valve 16.
  • the supply / discharge valve 14 is a direction control valve provided on the downstream side of the test pressure adjustment valve 13. By switching the supply / exhaust valve 14, supply to the tire T and exhaust from the tire T (release to the atmosphere) are switched.
  • an air pressure sensor is provided as the pressure detection unit 17 on the downstream side of the supply / discharge valve 14.
  • the air pressure in the tire T may slightly change during the tire test. Since such a small change in air pressure is as small as 0.5 kPa to 1 kPa, the pressure adjustment accuracy is ⁇ 0.1% (for example, the adjustment system in the case of a pressure regulator rated at 1000 kPa is about ⁇ 1 kPa) Adjustment using only the test pressure adjusting valve 13 is difficult.
  • the air supplied from the air supply source 10 to the tire with the bead air pressure is preheated by the air temperature raising mechanism 21.
  • variation of the air pressure which arises during a tire test is suppressed by sending the air which became the temperature which exceeds outdoor temperature to a tire.
  • the air temperature raising mechanism 21 of the present embodiment is provided on the downstream side of the air supply source 10 (pressure gauge 19), and is a branch point between the bead seat system 11 and the test system 12. It is provided in the upstream piping.
  • the air temperature raising mechanism 21 includes a tank 23 disposed on the downstream side of the air supply source 10 and a heat exchanger 30 provided in the tank 23.
  • the heat exchanger 30 has a configuration in which a heat medium is passed through a tube to exchange heat.
  • the air pressure in the tire T can be prevented from changing during the tire test by raising the temperature of the air supplied to the tire T by the bead air pressure to a temperature exceeding the outside air temperature.
  • P1 atmospheric pressure
  • P1 is the pressure of the air in the tire T and the pressure in the pipe (hereinafter included in the tire T) before inflating by supplying air (that is, before inflating and before mounting on the rims 6 and 7).
  • the temperature is T1 (room temperature).
  • the pressure of the air supplied from the air supply source 10 is Pa (bead air pressure), and the temperature is Ta.
  • the temperature T2 of the air in the tire T after expansion when the compressed air is supplied from the air supply source 10 to the bead seat system 11 and the pressure in the tire T rises to the bead air pressure Pa is calculated.
  • the energy balance is expressed by equation (1).
  • Equation (1) m1 is the air mass before expansion, m2 is the air mass after expansion, u1 is the specific energy before expansion, and u2 is the specific energy after expansion.
  • M2-m1 represents the mass of air flowing in, and h represents the specific enthalpy of the air flowing in.
  • Equation (1) is , Expressed as equation (2).
  • equation (3) is obtained from equation (2).
  • the pressure of the air supplied from the air supply source 10 is 400 kPa (gauge pressure), and the temperature of the air is 20 ° C., which is room temperature (outside air temperature). Further, the air before expansion in the tire T is set to atmospheric pressure and 20 ° C. (outside air temperature).
  • P1 100 kPa (absolute pressure)
  • T1 293K (absolute temperature)
  • Ta 293K (absolute temperature)
  • ⁇ 1.4
  • the switching valve 15 is switched so that the air pressure in the tire T changes from the bead air pressure to the test air pressure.
  • the switching valve 15 is switched, that is, while the bead air pressure is maintained so that the air pressure in the tire T becomes the bead air pressure
  • the heat of the air in the tire T By being transmitted to the tire T, the temperature of the air in the tire T decreases.
  • the amount of decrease in the temperature of the air in the tire T is such that the larger the difference between the temperature of the rims 6 and 7 and the tire T and the temperature of the air in the tire T, and the longer the time during which the bead air pressure is maintained. large.
  • the temperature of the air in the tire T is very high. Therefore, the temperature of the air in the tire T may decrease by about 50 ° C. even if the time for holding the bead air pressure is short. In this embodiment, the temperature of the air in the tire T when the switching valve 15 is switched was 57 ° C.
  • the absolute temperature T2 at the test pressure is 86% of T1. Therefore, if the temperature in the tire T at the time of bead air pressure (when the switching valve 15 is switched) is 57 ° C. (330 K), the temperature of the air in the tire T becomes 11 ° C. when the test air pressure is reached. The temperature of the air in the tire T at this test air pressure is 11 ° C., which is lower than the outside air temperature 20 ° C.
  • the tire test is performed in a state where the temperature of the air in the tire T is lower than the outside air temperature
  • the heat of the rubber T and the metal rims 6 and 7 of the normal temperature tire T is transmitted into the tire T, and the tire test is performed.
  • the air temperature of the tire T rises inside. If the temperature of the air in the tire T rises during the tire test, the pressure of the air in the tire T changes, and the pressure of the air in the tire T increases.
  • the temperature difference between the air in the tire T and the tire T and the rims 6 and 7 increases, the amount of heat transfer increases, and the temperature of the air in the tire T having a small heat capacity increases steadily. The pressure increases.
  • air whose temperature is increased by the air temperature raising mechanism 21 so as to exceed the outside air temperature is supplied to the piping system as the air supplied from the air supply source 10 to the tire T by the bead air pressure. It is characterized by pouring.
  • the air supplied from the air supply source 10 into the tire T at the bead air pressure (gauge pressure of 400 kPa) is heated by the heat exchanger 30 in the tank 23.
  • the temperature of the air in the tank 23 is increased by 10 ° C. from the outside air temperature (normal temperature), as described above, the temperature of the air in the tire T at the bead air pressure (when the switching valve 15 is switched) becomes 67 ° C.
  • the pressure of the air in the tire T is lowered from the bead air pressure to the test air pressure of 200 kPa (gauge pressure)
  • the temperature of the air in the tire T becomes 19.4 ° C., which is substantially equal to the outside air temperature. In this case, the temperature change during the tire test is slight, and the pressure change hardly occurs.
  • the final temperature in the tire T is affected by the temperature change due to heat transfer in addition to the temperature change obtained by the above calculation. It is desirable that the temperature setting of the cooled air is experimentally examined for an appropriate value in each tire testing device 2. Further, it has been experimentally confirmed that the temperature change and the pressure change are moderate if the temperature in the tire T is within a range of ⁇ 5 ° C. of the outside air temperature when the bead air pressure is changed to the test air pressure.
  • the tire test is performed in the following procedure. That is, when performing a tire test, first, the air pressure in the tire T is adjusted to the bead air pressure via the pipe of the bead seat system 11, and air heated to a temperature exceeding the outside air temperature by the heat exchanger 30 (for example, 30 ° C. The tire T is inflated in a short time, and the bead portion of the tire T is firmly attached to the rims 6 and 7.
  • the switching valve 15 When the tire T is mounted, the switching valve 15 is turned on and the shutoff valve 16 is turned off, whereby the air flow path of the test system 12 is closed and the air flow path of the bead seat system 11 is opened. And the tire T expand
  • the temperature in the tire T immediately after the tire T is expanded with the bead air pressure is 117 ° C.
  • the switching valve 15 is turned off while the supply / discharge valve 14 is on and the shutoff valve 16 is off. In this way, the flow path of the compressed air is switched to the test system 12 and the air in the tire T is exhausted outside the air flow path 8.
  • a test pressure adjusting valve 13 is provided in the piping of the test system 12, and the pressure of the compressed air in the tire T, which has been set to bead air pressure, is switched to the test air pressure. While the bead air pressure is switched to the test air pressure, the heat of the air of the tire T is transmitted to the tire T and the rims 6 and 7, so that the temperature of the air gradually decreases.
  • the temperature of the air in the tire T immediately after switching to the test air pressure is 67 ° C.
  • the air temperature raising mechanism 21 that heats the air supplied from the air supply source 10 to the tire T and makes the temperature of the air higher than the outside air temperature, the air pressure that is difficult to adjust with the pressure regulator is obtained. Variations can be suppressed. Therefore, the tire T can be maintained at the test air pressure during the tire test, and the uniformity can be accurately measured.
  • the present invention is not limited to the above-described embodiments, and the shape, structure, material, combination, and the like of each member can be appropriately changed without changing the essence of the invention.
  • a uniformity machine is cited as an example of the tire testing apparatus 2.
  • the pneumatic circuit 1 of the present invention can also be used in a tire testing apparatus that performs evaluations other than uniformity.
  • the air temperature raising mechanism 21 of the embodiment heated the air by the heat exchanger 30 and made the temperature of the air supplied to the tire T higher than the outside air temperature, instead, before supplying the bead air, The temperature of the air may be raised by adiabatically compressing the air in the tank 23.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Balance (AREA)
  • Tires In General (AREA)

Abstract

L'invention porte sur un dispositif d'essai de pneu pouvant empêcher la modification de la pression d'air provoquée durant l'essai de pneu au moyen d'une régulation de la température de l'air devant être fourni à un pneu. Un circuit pneumatique (1) de dispositif d'essai de pneu (2) est muni d'une source d'alimentation en air (10) destinée à fournir de l'air à un pneu (T) et montée entre une paire de jantes (6, 7), et d'une soupape de régulation de pression (13). La soupape de régulation de pression (13) régule la pression de l'air devant être fourni au pneu (T) par la source d'alimentation en air (10) à la pression d'air de talon, afin de gonfler le pneu (T) et monter les pneus sur les jantes (6, 7), ou à une pression d'air d'essai inférieure à la pression d'air de talon et utilisée durant l'essai de pneu. Le circuit pneumatique (1) est muni en outre d'un mécanisme d'augmentation de température de l'air (21) destiné à chauffer l'air devant être fourni au pneu à la pression d'air de talon à une température supérieure à la température de l'air extérieur.
PCT/JP2010/072057 2009-12-14 2010-12-08 Circuit pneumatique de dispositif d'essai de pneu, dispositif d'essai de pneu, et procédé d'essai de pneu WO2011074460A1 (fr)

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JP2009-282797 2009-12-14
JP2009282797A JP5014409B2 (ja) 2009-12-14 2009-12-14 タイヤ試験装置の空気圧回路、タイヤ試験装置及びタイヤ試験方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013178214A (ja) * 2012-02-29 2013-09-09 Sumitomo Rubber Ind Ltd タイヤの試験方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6022987B2 (ja) * 2013-04-03 2016-11-09 株式会社神戸製鋼所 タイヤ試験装置の空気圧回路

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0560640A (ja) * 1991-09-05 1993-03-12 Kobe Steel Ltd タイヤのインフレーシヨン装置及びインフレーシヨン方法
JPH10206289A (ja) * 1997-01-21 1998-08-07 Sumitomo Rubber Ind Ltd タイヤユニフォミティ測定装置
JP2003326610A (ja) * 2002-05-10 2003-11-19 Yokohama Rubber Co Ltd:The タイヤ加硫成形後における後加硫・タイヤ仕上げ・測定方法及びその装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0560640A (ja) * 1991-09-05 1993-03-12 Kobe Steel Ltd タイヤのインフレーシヨン装置及びインフレーシヨン方法
JPH10206289A (ja) * 1997-01-21 1998-08-07 Sumitomo Rubber Ind Ltd タイヤユニフォミティ測定装置
JP2003326610A (ja) * 2002-05-10 2003-11-19 Yokohama Rubber Co Ltd:The タイヤ加硫成形後における後加硫・タイヤ仕上げ・測定方法及びその装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013178214A (ja) * 2012-02-29 2013-09-09 Sumitomo Rubber Ind Ltd タイヤの試験方法

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JP5014409B2 (ja) 2012-08-29

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