WO2010146011A1 - Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique - Google Patents
Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique Download PDFInfo
- Publication number
- WO2010146011A1 WO2010146011A1 PCT/EP2010/058297 EP2010058297W WO2010146011A1 WO 2010146011 A1 WO2010146011 A1 WO 2010146011A1 EP 2010058297 W EP2010058297 W EP 2010058297W WO 2010146011 A1 WO2010146011 A1 WO 2010146011A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire
- turn
- zero
- tension
- tire
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000004804 winding Methods 0.000 claims 2
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010411 cooking Methods 0.000 description 2
- 241000713813 Gibbon ape leukemia virus Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/08—Building tyres
- B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
- B29D30/24—Drums
- B29D30/242—Drums for manufacturing substantially cylindrical tyre components without cores or beads, e.g. treads or belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/70—Annular breakers
Definitions
- the invention relates to the field of the manufacture of tires, and in particular that of the assembly of the components forming the crown of the tire.
- the assembly of the crown reinforcement plies and the tread is performed on a receiving surface, also called vertex shape, whose axial profile, or curve, is generally cylindrical.
- the vertex shape is composed of a set of radially movable elements for adjusting the diameter of the shape between an expanded position used during the assembly phase and a retracted position for extracting the annular element obtained at the end of this phase of construction of the tire.
- the peaks of modern tires usually comprise reinforcing plies forming an angle with the circumferential direction a reinforcement ply composed of circumferentially wound son and said zero-degree ply or zero-degree thread, and a tread capping the together. Once formed, this annular element is transferred to the portion of the tire comprising the carcass reinforcement ply and the reinforcing rings of the beads, to which a generally toroidal shape has been imparted. The assembly then constitutes a bandage intended to be placed in a baking press for the vulcanization operation.
- the object of the invention is to provide an alternative solution to shrinking under tension son zero degree by acting on the transverse curve of the receiving surface of generally cylindrical shape for the assembly of the blank of a tire, to receive the components forming a crown belt.
- the method of determining the curve of the receiving surface according to the invention comprises the following steps during which:
- the initial radial position is determined so that the wire of the turn considered undergoes the desired rate of elongation during the press conformation; determines, at the axial location of said turn, the transverse profile of the receiving surface by subtracting from the initial position of the wire the thickness of the components arranged radially inside the turn of said zero-degree wire.
- the cooking means generally formed by an expandable membrane, will force the crown area to penetrate into the part of the mold with the sculptures.
- the radial displacements imposed on the zero-degree wires will be greater or smaller depending on the laying diameter of these wires during the assembly phase of the top, which depends on the laying diameter, the surface profile pose of the summit form. These displacements determine the rate of conformation in press.
- Figure 2 shows a radial sectional view of a crown assembly shape having a double concavity.
- the crown assembly form 2 illustrated in FIG. 1 comprises a laying surface 21 on which a tire crown 1 has been shown during assembly, comprising a first crown reinforcement ply 11 and a second reinforcing ply.
- These crown reinforcing plies are generally formed of reinforcing threads forming an angle with the circumferential direction.
- the top also comprises reinforcement son 13i wound to zero degree without tension.
- the transverse profile of the receiving surface for receiving the components forming the crown belt 2, defined as a function of the distance Rfdp from the surface to the axis of rotation of the assembly form, has a generally concave whose concavity is oriented radially inward of the assembly form. This configuration can be useful when one seeks to give a greater tension to the shoulders than in the center, considering that the transverse profile of the mold in the crown zone is substantially flat.
- any wire to zero degrees can be determined according to its axial position the final radius Rf of the wire (in the stressed state) corresponding to the final position of the wire at this point when the tire is fitted into the mold of cooking and Ri the initial radius of the hoop (radius of installation of the hoop in the unconstrained state)
- e the thickness (the distance) separating said wire from the finishing drum.
- E represents the thickness of the products laid radially under the wire under consideration.
- the vertex assembly form 3 illustrated in Figure 2 has a laying surface comprising the combination of two concavities in opposite directions.
- the two axially opposite wings 31 have a concavity oriented towards the inside of the assembly form, while the central portion 32 located at the equator of the assembly form has a concavity facing outwards of the Summit shape.
- This profile therefore has at least one inflection point and, as a rule, at least an even number of inflection points due to the symmetry of the tire, making it possible to connect these different concavity curves.
- This profile allows pre-tensioning of the shoulder wires to improve the speed limit performance, and pre-tensioning the zero-degree wires in the equator area of the tire to improve performance. in wear.
- the latter solution has the advantage of giving greater industrial flexibility by allowing the creation of laying forms with carefully determined standard profiles, and on which one adjusts finely the laying tension of the wires to zero degrees to obtain the desired pre-tension.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Tyre Moulding (AREA)
- Ropes Or Cables (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/380,028 US20120192637A1 (en) | 2009-06-19 | 2010-06-14 | Method for Determining the Transverse Curve of a Generally Cylindrical Receiving Surface |
BRPI1014941A BRPI1014941A2 (pt) | 2009-06-19 | 2010-06-14 | "processo de determinação da curvatura transversal de uma superfície de recepção de forma geralmente cilíndrica destinada, durante a montagem do esboço de um pneumático, a receber os componentes que formam uma cinta de topo" |
JP2012515450A JP2012530004A (ja) | 2009-06-19 | 2010-06-14 | 湾曲した横方向輪郭形状を備えたタイヤのクラウンの組み立て用フォーマ |
EP10725167A EP2442969A1 (fr) | 2009-06-19 | 2010-06-14 | Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique |
CN2010800269501A CN102802927A (zh) | 2009-06-19 | 2010-06-14 | 用于确定基本圆柱形接收表面的横向曲线的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0902998 | 2009-06-19 | ||
FR0902998 | 2009-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010146011A1 true WO2010146011A1 (fr) | 2010-12-23 |
Family
ID=41600392
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/058297 WO2010146011A1 (fr) | 2009-06-19 | 2010-06-14 | Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120192637A1 (fr) |
EP (1) | EP2442969A1 (fr) |
JP (1) | JP2012530004A (fr) |
CN (1) | CN102802927A (fr) |
BR (1) | BRPI1014941A2 (fr) |
WO (1) | WO2010146011A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015015336A1 (fr) * | 2013-08-01 | 2015-02-05 | Pirelli Tyre S.P.A. | Procédé et appareil de fabrication de pneus pour roues de véhicule et pneu pour roues de véhicule |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6333682B2 (ja) * | 2014-09-04 | 2018-05-30 | 住友ゴム工業株式会社 | タイヤ成形用フォーマーおよびタイヤ成形方法 |
CN112848807A (zh) * | 2021-01-29 | 2021-05-28 | 山东玲珑轮胎股份有限公司 | 一种曲面贴合鼓设计方法及曲面贴合鼓 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5032198A (en) * | 1987-06-18 | 1991-07-16 | Sumitomo Rubber Industries, Ltd. | Method for manufacturing an assembly of a belt, a band, and a tread rubber |
EP0502695A1 (fr) * | 1991-03-05 | 1992-09-09 | Bridgestone Corporation | Bandage pneumatique pour véhicules à deux roues |
EP0615866A1 (fr) * | 1993-03-15 | 1994-09-21 | Bridgestone Corporation | Bandages pneumatiques radiaux |
JPH06320911A (ja) * | 1993-03-15 | 1994-11-22 | Bridgestone Corp | 空気入りラジアルタイヤ |
EP0638410A1 (fr) * | 1993-08-09 | 1995-02-15 | Bridgestone Corporation | Procédé de fabrication de pneumatiques à carcasse radiale |
EP1769944A1 (fr) * | 2005-10-01 | 2007-04-04 | Continental Aktiengesellschaft | Pneumatique pour véhicule et procédé de fabrication dudit pneumatique |
EP2018977A1 (fr) * | 2006-05-17 | 2009-01-28 | Bridgestone Corporation | Pneu et son procédé de fabrication |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0757537B2 (ja) * | 1991-03-20 | 1995-06-21 | 株式会社森鐵工所 | タイヤ成型ドラム装置における可動部を駆動するための装置およびそれを使用したタイヤ成型ドラム装置 |
DE4239270A1 (de) * | 1992-11-23 | 1994-05-26 | Siemens Ag | Verfahren zur Stellgliedidentifizierung bei der Querprofil-Regelung einer kontinuierlich erzeugten Materialbahn |
US6336985B1 (en) * | 1997-07-31 | 2002-01-08 | Pirelli Coordinamento Pneumatici S.P.A. | Method for making a tire for vehicle wheels |
FR2887809A1 (fr) * | 2005-06-30 | 2007-01-05 | Michelin Soc Tech | Pneumatique pour vehicules lourds |
DE602007000888D1 (de) * | 2006-06-16 | 2009-05-28 | Michelin Soc Tech | Verfahren zum Auflegen einer verstärkten Karkassenlage. |
-
2010
- 2010-06-14 EP EP10725167A patent/EP2442969A1/fr not_active Withdrawn
- 2010-06-14 WO PCT/EP2010/058297 patent/WO2010146011A1/fr active Application Filing
- 2010-06-14 US US13/380,028 patent/US20120192637A1/en not_active Abandoned
- 2010-06-14 CN CN2010800269501A patent/CN102802927A/zh active Pending
- 2010-06-14 BR BRPI1014941A patent/BRPI1014941A2/pt not_active Application Discontinuation
- 2010-06-14 JP JP2012515450A patent/JP2012530004A/ja not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5032198A (en) * | 1987-06-18 | 1991-07-16 | Sumitomo Rubber Industries, Ltd. | Method for manufacturing an assembly of a belt, a band, and a tread rubber |
EP0502695A1 (fr) * | 1991-03-05 | 1992-09-09 | Bridgestone Corporation | Bandage pneumatique pour véhicules à deux roues |
EP0615866A1 (fr) * | 1993-03-15 | 1994-09-21 | Bridgestone Corporation | Bandages pneumatiques radiaux |
JPH06320911A (ja) * | 1993-03-15 | 1994-11-22 | Bridgestone Corp | 空気入りラジアルタイヤ |
EP0638410A1 (fr) * | 1993-08-09 | 1995-02-15 | Bridgestone Corporation | Procédé de fabrication de pneumatiques à carcasse radiale |
EP1769944A1 (fr) * | 2005-10-01 | 2007-04-04 | Continental Aktiengesellschaft | Pneumatique pour véhicule et procédé de fabrication dudit pneumatique |
EP2018977A1 (fr) * | 2006-05-17 | 2009-01-28 | Bridgestone Corporation | Pneu et son procédé de fabrication |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015015336A1 (fr) * | 2013-08-01 | 2015-02-05 | Pirelli Tyre S.P.A. | Procédé et appareil de fabrication de pneus pour roues de véhicule et pneu pour roues de véhicule |
US10857749B2 (en) | 2013-08-01 | 2020-12-08 | Pirelli Tyre S.P.A. | Process and apparatus for building tyres for vehicle wheels and tyre for vehicle wheels |
Also Published As
Publication number | Publication date |
---|---|
US20120192637A1 (en) | 2012-08-02 |
BRPI1014941A2 (pt) | 2016-04-26 |
JP2012530004A (ja) | 2012-11-29 |
CN102802927A (zh) | 2012-11-28 |
EP2442969A1 (fr) | 2012-04-25 |
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