WO2002098683A1 - Procede et dispositif de montage d'un pneumatique et procede d'analyse dudit pneumatique - Google Patents
Procede et dispositif de montage d'un pneumatique et procede d'analyse dudit pneumatique Download PDFInfo
- Publication number
- WO2002098683A1 WO2002098683A1 PCT/EP2002/005897 EP0205897W WO02098683A1 WO 2002098683 A1 WO2002098683 A1 WO 2002098683A1 EP 0205897 W EP0205897 W EP 0205897W WO 02098683 A1 WO02098683 A1 WO 02098683A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tire
- variation
- mounting
- radial load
- mark
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
- B60C25/01—Apparatus or tools adapted for mounting, removing or inspecting tyres for removing tyres from or mounting tyres on wheels
- B60C25/05—Machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
- B60C25/01—Apparatus or tools adapted for mounting, removing or inspecting tyres for removing tyres from or mounting tyres on wheels
- B60C25/02—Tyre levers or the like, e.g. hand-held
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
-
- 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
- G01M17/022—Tyres the tyre co-operating with rotatable rolls
- G01M17/024—Tyres the tyre co-operating with rotatable rolls combined with tyre surface correcting or marking means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
- Y10T152/10027—Tires, resilient with wear indicating feature
Definitions
- the invention relates to a method and a device for mounting a tire, of the type with incorporated chamber commonly known as "tubeless", on a rim.
- the assembly according to the invention makes it possible in particular to control the variations in radial load on the periphery of the mounted assembly.
- the invention also proposes a method for analyzing such a tire prior to mounting.
- the humps are bosses whose function is to avoid or at least delay the occurrence of a loosening of the tire in the event of a drop in pressure.
- a conventional rim of the hollow base type is made up of different zones; firstly, a rim flange, or attachment zone, the essential role of which is to retain the bead of the tire in the inflated state; then the seat of the bead, usually slightly conical, on which the bead rests and which ensures its tightening, as well as airtightness in the case of tires with incorporated chamber called “tubeless”; and finally a groove intended to allow mounting of the tire due to its diameter less than that of the rim.
- a rim comprising humps these are present between the seat of the bead and the groove which authorizes the mounting.
- the usual method of mounting a tire on such a rim for example using a semi-automatic machine, consists of different steps which are as follows; we start by passing part of the first bead over the first rim flange and we place this part in the groove. The rest of the bead can then be passed over the first rim thanks to a slight ovalization of the bead and a deformation of the flexible sidewall of the tire. The same is true for passing the second bead over the first rim of the rim or the other rim. The assembly is then completed by a final step of inflation at a pressure such that it ensures the setting
- tires can have circumferential non-uniformities; these are imperfections originating, for example, from irregularities in the thicknesses of the rubber bands which constitute the tire or else, for example, excess thicknesses in the weld zones of the semi-finished products which constitute the tire, or even from variation in stiffness around the wheel, due in particular to welds . and inhomogeneities of the materials.
- the mission was thus to design an assembly technique which makes it possible, if necessary, to moderate in particular the effects of the variation in radial load of the tire on the assembled assembly.
- This object is achieved according to the invention by a method of mounting a tire on a wheel rim, said tire having a mark indicating an extreme value of a parameter having a circumferential variation, method 1 according to which an area d at least one bead of the tire at least during a first inflation phase, said zone being azimuthed as a function of said mark affixed to the tire.
- the reference mark indicates the position of the maximum of the harmonic Hl of the variation in radial load of the tire.
- the bead is retained on an area coinciding with the mark affixed to the tire.
- a predetermined area of the bead of the tire which corresponds to its maximum of the harmonic Hl of variation in radial load is temporarily retained while the corresponding bead crosses the hump to come to be positioned on the seat of the bead in contact of the rim under the effect of inflation. This determines the area of the bead that last crosses the hump.
- the mounting method according to the invention thus corresponds to an assembly in phase opposition of the harmonics H1 of the variation in radial load of the tire and in the variation of radial load due to mounting.
- areas of the two beads of the tire are retained symmetrically with respect to the circumferential median plane.
- the passage of the humps is controlled on both sides of the tire during the inflation phase.
- the he intensity of said retention of the bead decreases with inflation.
- P10-1360-pct defects their level of importance being secondary with regard to the values of variation in radial load which may exist on a tire.
- the method notably proposing to improve the uniformity of the assembled assembly, it may be appropriate to take into account the average runout of the wheel which can generate a variation in harmonic Hl of the radial load due to the wheel.
- the result of these three parameters, related respectively to the tire, to the mounting and to the wheel, which is a vector sum, will lead to a variation in radial load of the mounted assembly.
- a desire to achieve this could be to try as far as possible a vector combination -of the three parameters leading to a circumferentially uniform set, that is to say to try to obtain a zero vector sum.
- the tire is mounted on a wheel whose maximum of the harmonic Hl of the average runout is marked, the mark of the tire being diametrically opposite to said mark of the wheel during mounting.
- Such an assembly corresponds for example to a case where the variation in radial load of the tire is preponderant compared to the other parameters which are the variation in radial load due to the mounting and the average runout of the wheel.
- the tire is mounted on a wheel whose maximum of the harmonic Hl of the average runout is identified, the
- P10-1360-pct mark of the tire being positioned on a radius similar to that of said mark of the wheel during assembly.
- This second type of mounting corresponds to a case where the variation in radial load due to mounting is preponderant with respect to the variation in radial load of the tire and the runout of the wheel.
- the invention can make it possible to obtain an improvement in the circumferential uniformity of the mounted assembly with regard to the variation in radial load.
- a device is also proposed for implementing the method described above.
- this device for mounting a tire on a rim, said tire having a mark indicating an extreme value of a parameter having a circumferential variation, comprises, in addition to the usual mounting and inflation means, a tool provided to exert a bearing force on an area of at least one sidewall of the tire at least during a first inflation phase, said area being azimuted as a function of said reference mark.
- the reference mark indicates the position of the maximum of the harmonic Hl of the variation in radial load of the tire.
- said zone coincides with said reference.
- the tool is advantageously in the form of pliers or pincers so as to be able to act on the two sidewalls of the tire simultaneously to control the passage of humps on each side.
- the clamp is preferably used on a second station to simplify its positioning on the tire, said second station being an inflation station.
- the clamp can be provided on the mounting station, the assembled assembly being brought into the appropriate position before inflation begins. Placing the clamp in contact with the
- P10-1360-pct pneumatic can be performed manually or semi-automatically.
- the force exerted on the clamp to be reproduced on the tire will advantageously be obtained by a jack type system so as to obtain a force of sufficient and reproducible intensity; such means also make it possible to gradually decrease the intensity of the force when the inflation reaches the desired pressure.
- the contact zones between the clamp and the tire preferably have a certain surface so as not to damage the tire; these zones are advantageously not too large so as to locate in a zone as small as possible the final passage of the humps.
- the tool is in the form of at least one mechanical pressure means.
- An automated assembly line consists in carrying out rapid inflation, for reasons of cadence, of the assembled assemblies without using the valve; to do this, a bell is tightly applied to a sidewall of the tire, the latter pressing on the lower part of said sidewall to keep the bead spaced from the rim flange and provide a passage for the air which is introduced under pressure.
- the mechanical pressure means according to the invention can be an additional element or it can be combined with the means which keep the bead apart during inflation. It can in particular be a bell whose peripheral profile is modified, for example by the presence of a local boss, so that said bell exerts a greater pressure on a local and predetermined zone of the lower part of the flank .
- the mechanical pressure means is such that it advantageously has contact zones between the tool and the tire having a certain surface so as not to damage the tire; these zones are advantageously not too large so as to locate in a zone as small as possible the final passage of the humps.
- a second mechanical pressure means is provided on the other flank so as to control the final passage of the humps on each side, opposite.
- a method of analyzing a tire is also proposed to predict its sensitivity, or its aptitude, for mounting on a rim, the method consisting in determining a variation in radial load due to the mounting of the tire on a rim comprising humps.
- the analysis method according to the invention makes it possible to give a trend for a given family of tires with a value comparable to those obtained for other families of tires already measured.
- this method of analyzing a tire of the family considered consists in determining the variation in radial load of a mounted assembly, the rim having humps, in determining the variation in radial load of this same tire and to make the vector difference between the two values obtained.
- the measurement of the variation in radial load of the tire of the family in question is obtained by measurement on an assembled assembly using a rim without humps and very efficient lubrication means ensuring good positioning.
- the measurement of variation in radial load is made according to the technique mentioned above and preferably on the same measuring device.
- FIGS. 1 to 4 represent:
- FIG. 1 a diagram of a device for implementing the invention on a machine for mounting a semi-automatic tire
- FIG. 2 a curve illustrating the variation in radial load linked to mounting
- FIG. 3 a diagram illustrating the results obtained according to a usual assembly, called random
- FIG. 4 a diagram illustrating the results obtained according to the invention.
- Figure 1 is shown schematically a semi-automatic mounting machine 1 which includes a frame 2 on which a turntable, not shown in Figure 1, rotates the wheel 3 and tire 4 around a vertical axis.
- the machine also comprises a tool 5 coupled to a roller 6 which allows the bead of the tire 4 to pass over the rim 7.
- the tool 5 is shown in a raised position, the passage of the second bead of the tire 4 over the rim of the rim 7 already being produced.
- a device according to the invention which can be described as pliers or pincers 8.
- This pliers 8 is positioned in contact with the tire 4 bearing on each sidewall 9 as close as possible to the wheel 3 by through tips or jaws 10 which allow non-punctual support so as not to damage the surface of the tire 4.
- the clamp 8 is also associated with a clamping system, like a jack 13, which makes it possible to guarantee the intensity of the tightening and ensuring its reproducibility.
- the bearing areas of the clamp 8 on the sidewalls 9 coincide with a marking or labeling 11 produced on the tire 4. This marking 11 previously carried out indicates the maximum of the harmonic Hl of the radial load of the tire 4.
- This maximum of the radial load of the tire 4 is determined beforehand by measures such as those described in particular in US Pat. No. 3,724,137.
- valve 12 connected to a pipe, not shown, through which the compressed air arrives which will allow the inflation of the tire and thus complete its mounting.
- the clamp 8 prior to this inflation phase, the clamp 8 is positioned and actuated to come and tighten the beads on each sidewall of the tire 4 at the level of the labeling 11.
- the positioning of the clamp 8 and its tightening can be manual or automatic, the automatic mechanisms being able to be produced by any means known to those skilled in the art, the tire 4 being positioned so that the labeling 11 faces the clamp 8.
- the action of the clamp 8 will advantageously decrease progressively and allow the humps to pass through the zones of the beads previously retained. These areas being according to the invention the last to cross the humps on the wheel turn.
- FIG. 2 is a curve representing the variation in radial load linked to the mounting of a tire on a wheel comprising a rim with humps. This curve is obtained by the difference of two measurements made on a wheel revolution. These measurements are respectively, the measurement of the variation in radial load of a tire and the variation in radial load of an assembly mounted on a wheel revolution. The measurements are made according to a technique such as that described above and in particular described in US Patent 3,724,137.
- the measurements are carried out on the same installation with conditions which are adapted to the dimensions of the tire.
- the measurement of the variation in radial load of the tire is obtained by measurement on an assembled assembly using a rim without humps with the use of a grease with high lubricating power, which allows a good assembly as regards the positioning of the beads of the tire on their seats resting on the rim edges.
- the measurement of the variation in radial load of the mounted assembly is carried out on a rim comprising humps such that it presents penalizing conditions in terms of crossing within the tolerances of the ETRTO standard.
- the curve 14 obtained according to the method explained above and represented in FIG. 2 is therefore the variation in radial load due to the mounting, expressed in daN, on a wheel revolution. It shows that the variation in radial load is distributed mainly in Hl harmonics.
- FIGS. 3 and 4 respectively represent a diagram illustrating the results obtained with a usual so-called random assembly and a diagram illustrating the results obtained according to the invention, concerning the assembly of a 215/55 R 16 tire.
- the results presented correspond to the values the maximum radial load obtained for each diagram on 25 assembled assemblies.
- These figures show that the assembly proposed by the invention makes it possible to improve the quality of the assembly and more specifically the variation in radial load on a wheel revolution.
- the value of the maximum radial load obtained by the average of the 25 measurements is equal to 3.5 daN in the case of the invention while the average value obtained on the 25 random assemblies is 8.1 daN.
- the mounting according to the invention can be carried out without risk whatever the tire which is to be mounted. Indeed, this mounting may possibly only bring a negligible effect in the case of a tire which does not present a priori any potential risks of variation in radial load due to its mounting but the mounting technique according to the invention does not may in no case be harmful to the quality of the assembled assembly, in particular as regards its variation in radial load.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Balance (AREA)
- Tires In General (AREA)
- Sampling And Sample Adjustment (AREA)
- Tyre Moulding (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003501698A JP4271564B2 (ja) | 2001-06-07 | 2002-05-29 | タイヤを取付ける方法および装置、およびタイヤを分析する方法 |
EP02740663A EP1399323B1 (fr) | 2001-06-07 | 2002-05-29 | Procede et dispositif de montage d'un pneumatique et procede d'analyse dudit pneumatique |
AT02740663T ATE517771T1 (de) | 2001-06-07 | 2002-05-29 | Verfahren und vorrichtung zur montage eines reifens und verfahren zur analyse des reifens |
KR10-2003-7015822A KR20040011522A (ko) | 2001-06-07 | 2002-05-29 | 타이어를 결합하기 위한 방법 및 장치와, 그 타이어를분석하기 위한 방법 |
BRPI0210152-1A BR0210152B1 (pt) | 2001-06-07 | 2002-05-29 | processo e dispositivo de montagem de um pneumático em um aro, e, processo de análise de um pneumático. |
US10/721,266 US7051583B2 (en) | 2001-06-07 | 2003-11-26 | Method and device for fitting a tire and method of analyzing the said tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/07626 | 2001-06-07 | ||
FR0107626A FR2825664B1 (fr) | 2001-06-07 | 2001-06-07 | Procede et dispositif de montage d'un pneumatique et procede d'analyse dudit pneumatique |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/721,266 Continuation US7051583B2 (en) | 2001-06-07 | 2003-11-26 | Method and device for fitting a tire and method of analyzing the said tire |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002098683A1 true WO2002098683A1 (fr) | 2002-12-12 |
Family
ID=8864189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/005897 WO2002098683A1 (fr) | 2001-06-07 | 2002-05-29 | Procede et dispositif de montage d'un pneumatique et procede d'analyse dudit pneumatique |
Country Status (9)
Country | Link |
---|---|
US (1) | US7051583B2 (fr) |
EP (1) | EP1399323B1 (fr) |
JP (1) | JP4271564B2 (fr) |
KR (1) | KR20040011522A (fr) |
CN (1) | CN100462246C (fr) |
AT (1) | ATE517771T1 (fr) |
BR (1) | BR0210152B1 (fr) |
FR (1) | FR2825664B1 (fr) |
WO (1) | WO2002098683A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI805376B (zh) * | 2022-05-19 | 2023-06-11 | 曄中科技有限公司 | 輪胎柱塞、脫唇試驗機 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101389945B (zh) * | 2006-02-23 | 2010-12-01 | 赛希特有限公司 | 测试轮胎的方法 |
US8746318B2 (en) * | 2010-03-15 | 2014-06-10 | Clinton Robert Clark | Tire bead seating method and apparatus |
US9360396B2 (en) * | 2011-10-06 | 2016-06-07 | Kobe Steel, Ltd. | Tire uniformity testing device and tire uniformity testing method |
CN103175703B (zh) * | 2011-12-20 | 2015-09-30 | 南车青岛四方机车车辆股份有限公司 | 轮轴定位装置及其方法 |
US9840234B2 (en) * | 2013-08-13 | 2017-12-12 | Android Industries Llc | Inflator with reactive tire pressure monitoring |
CN103438776B (zh) * | 2013-09-16 | 2017-02-08 | 上海新世纪机器人有限公司 | 外胎跳动度检测设备 |
JP6231694B2 (ja) * | 2014-08-28 | 2017-11-15 | 本田技研工業株式会社 | タイヤ組立体のフィッティング装置及びタイヤ組立体のフィッティング方法 |
KR20170035014A (ko) | 2015-09-22 | 2017-03-30 | 한국해양대학교 산학협력단 | 조선해양 구조물 건조공정의 계획 및 실행정보 비교 분석 시스템과 그 방법 |
CN105346341B (zh) * | 2015-09-28 | 2017-10-31 | 湖北洋田塑料制品有限公司 | 一种免充气童车轮上胎机 |
CN110303831B (zh) * | 2019-06-25 | 2021-07-20 | 北京恒通汇新能源汽车科技有限公司 | 一种高效率扒胎机 |
FR3112385B1 (fr) * | 2020-07-07 | 2023-06-09 | Michelin & Cie | Dispositif et procédé de caractérisation d’un pneumatique en uniformité |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3724137A (en) | 1967-02-01 | 1973-04-03 | Gen Tire & Rubber Co | Means for correcting non-uniformity in tires |
US5060510A (en) * | 1989-06-30 | 1991-10-29 | Michelin & Cie Compagnie Generale Des Etablissements Michelin | Method of correcting variations in radial force between a tire and the ground |
US5616859A (en) * | 1992-04-03 | 1997-04-01 | Michelin Recherche Et Technique S.A. | Tire uniformity correction without grinding |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3993899B2 (ja) * | 1997-04-18 | 2007-10-17 | コンパニー ゼネラール デ エタブリッスマン ミシュラン−ミシュラン エ コムパニー | 横断方向振動信号を発生する安全インサートおよび安全インサート上でのタイヤの支持を検出する装置 |
US6615144B2 (en) * | 2001-05-07 | 2003-09-02 | The Goodyear Tire & Rubber Company | Tire uniformity prediction using curve fitting |
-
2001
- 2001-06-07 FR FR0107626A patent/FR2825664B1/fr not_active Expired - Fee Related
-
2002
- 2002-05-29 WO PCT/EP2002/005897 patent/WO2002098683A1/fr active Application Filing
- 2002-05-29 KR KR10-2003-7015822A patent/KR20040011522A/ko not_active Application Discontinuation
- 2002-05-29 CN CNB02811535XA patent/CN100462246C/zh not_active Expired - Fee Related
- 2002-05-29 EP EP02740663A patent/EP1399323B1/fr not_active Expired - Lifetime
- 2002-05-29 BR BRPI0210152-1A patent/BR0210152B1/pt not_active IP Right Cessation
- 2002-05-29 JP JP2003501698A patent/JP4271564B2/ja not_active Expired - Fee Related
- 2002-05-29 AT AT02740663T patent/ATE517771T1/de not_active IP Right Cessation
-
2003
- 2003-11-26 US US10/721,266 patent/US7051583B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3724137A (en) | 1967-02-01 | 1973-04-03 | Gen Tire & Rubber Co | Means for correcting non-uniformity in tires |
US5060510A (en) * | 1989-06-30 | 1991-10-29 | Michelin & Cie Compagnie Generale Des Etablissements Michelin | Method of correcting variations in radial force between a tire and the ground |
US5616859A (en) * | 1992-04-03 | 1997-04-01 | Michelin Recherche Et Technique S.A. | Tire uniformity correction without grinding |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI805376B (zh) * | 2022-05-19 | 2023-06-11 | 曄中科技有限公司 | 輪胎柱塞、脫唇試驗機 |
Also Published As
Publication number | Publication date |
---|---|
US20040103993A1 (en) | 2004-06-03 |
ATE517771T1 (de) | 2011-08-15 |
JP2004527418A (ja) | 2004-09-09 |
EP1399323B1 (fr) | 2011-07-27 |
BR0210152B1 (pt) | 2011-03-09 |
FR2825664B1 (fr) | 2003-08-22 |
FR2825664A1 (fr) | 2002-12-13 |
US7051583B2 (en) | 2006-05-30 |
KR20040011522A (ko) | 2004-02-05 |
EP1399323A1 (fr) | 2004-03-24 |
JP4271564B2 (ja) | 2009-06-03 |
CN100462246C (zh) | 2009-02-18 |
CN1514777A (zh) | 2004-07-21 |
BR0210152A (pt) | 2004-06-08 |
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