EP2442969A1 - 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

Info

Publication number
EP2442969A1
EP2442969A1 EP10725167A EP10725167A EP2442969A1 EP 2442969 A1 EP2442969 A1 EP 2442969A1 EP 10725167 A EP10725167 A EP 10725167A EP 10725167 A EP10725167 A EP 10725167A EP 2442969 A1 EP2442969 A1 EP 2442969A1
Authority
EP
European Patent Office
Prior art keywords
wire
turn
zero
tension
tire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10725167A
Other languages
German (de)
English (en)
French (fr)
Inventor
Philippe Tramond
Jean-Yves Denoueix
Bernard Guerinon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Generale des Etablissements Michelin SCA
Michelin Recherche et Technique SA France
Original Assignee
Michelin Recherche et Technique SA Switzerland
Michelin Recherche et Technique SA France
Societe de Technologie Michelin SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Michelin Recherche et Technique SA Switzerland, Michelin Recherche et Technique SA France, Societe de Technologie Michelin SAS filed Critical Michelin Recherche et Technique SA Switzerland
Publication of EP2442969A1 publication Critical patent/EP2442969A1/fr
Withdrawn legal-status Critical Current

Links

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)
EP10725167A 2009-06-19 2010-06-14 Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique Withdrawn EP2442969A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0902998 2009-06-19
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

Publications (1)

Publication Number Publication Date
EP2442969A1 true EP2442969A1 (fr) 2012-04-25

Family

ID=41600392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10725167A Withdrawn EP2442969A1 (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 (zh)
EP (1) EP2442969A1 (zh)
JP (1) JP2012530004A (zh)
CN (1) CN102802927A (zh)
BR (1) BRPI1014941A2 (zh)
WO (1) WO2010146011A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102206804B1 (ko) * 2013-08-01 2021-01-25 피렐리 타이어 소시에떼 퍼 아찌오니 차륜용 타이어 건조 방법 및 장치와 차륜용 타이어
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

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0319588B2 (en) * 1987-06-18 1998-02-04 Sumitomo Rubber Industries Limited Pneumatic radial tire and production thereof
JP3083862B2 (ja) * 1991-03-05 2000-09-04 株式会社ブリヂストン 二輪車用空気入りタイヤ
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
AU655553B2 (en) * 1993-03-15 1994-12-22 Bridgestone Corporation Pneumatic radial tires
JP3445348B2 (ja) * 1993-03-15 2003-09-08 株式会社ブリヂストン 空気入りラジアルタイヤ
JP3397387B2 (ja) * 1993-08-09 2003-04-14 株式会社ブリヂストン 空気入りラジアルタイヤの製造方法
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
DE102005047223A1 (de) * 2005-10-01 2007-04-05 Continental Aktiengesellschaft Fahrzeugluftreifen und Verfahren zum Herstellen eines Fahrzeugluftreifens
JP2007307976A (ja) * 2006-05-17 2007-11-29 Bridgestone Corp 空気入りタイヤおよびそれの製造方法
DE602007000888D1 (de) * 2006-06-16 2009-05-28 Michelin Soc Tech Verfahren zum Auflegen einer verstärkten Karkassenlage.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010146011A1 *

Also Published As

Publication number Publication date
CN102802927A (zh) 2012-11-28
WO2010146011A1 (fr) 2010-12-23
US20120192637A1 (en) 2012-08-02
BRPI1014941A2 (pt) 2016-04-26
JP2012530004A (ja) 2012-11-29

Similar Documents

Publication Publication Date Title
EP2361790B1 (fr) Pneumatique comprenant un organe électronique
EP1847380B1 (fr) Perfectionnement d'un tambour d'assemblage destiné à la fabrication des pneumatiques autoporteurs
FR2479086A1 (fr) Bande de roulement preformee et procede de confection d'un pneu muni d'une telle bande de roulement
LU83937A1 (fr) Pneumatique gros porteur dont l'armature de sommet comporte des cables circonferentiels thermoretractables,et son procede de fabrication
LU83779A1 (fr) Pneumatique de securite
LU82499A1 (fr) Pneumatique de securite et ensemble pneumatique-jante correspondant
FR3020017A1 (fr) Pneumatique pour vehicule de genie civil
EP1060089B1 (fr) Pneumatique electriquement conducteur et appareillages d'extrusion de profiles rendus conducteurs
FR2499475A1 (fr) Pneumatique gros porteur dont l'armature de sommet comporte des cables circonferentiels thermoretractables, et son procede de fabrication
WO2010146011A1 (fr) Procede de determination du galbe transversal d'une surface de reception de forme generalement cylindrique
EP1638785B1 (fr) Element protecteur d'une bande de roulement
FR2627725A1 (fr) Pneumatique a corps principal, forme de deux demi-corps circulaires
EP1397263B1 (fr) Pneumatique a bourrelet renforce
EP1798022B1 (fr) Membrane de retournement zone basse
WO2003010011A1 (fr) Pneumatique ayant des flancs dissymetriques et renforces
FR2879957A1 (fr) Tambour de conformation des nappes d'armature sommet
CA2020125C (fr) Procede de moulage d'un pneumatique, et moule pour la mise en oeuvre dudit procede
WO2015086395A1 (fr) Pneumatique a carcasse radiale ou croisee renforce
FR2935295A1 (fr) Pneumatique pour vehicules lourds comportant au moins dans chaque epaule au moins deux couches additionnelles dans l'armature de sommet
EP1076612B1 (fr) Pneumatique a armature de carcasse a deux rigidites
FR3102097A1 (fr) Pneumatique a emission de bruit reduit et son procede de fabrication
FR2678544A1 (fr) Procede de fabrication d'un pneumatique a armature de carcasse radiale, et pneumatique obtenu.
FR2647716A1 (fr) Pneu radial a profil de carcasse maintenu
EP4045299B1 (fr) Pneumatique presentant une uniformite amelioree et son procede de fabrication
EP1261498B1 (fr) Jante avec sieges inclines vers l'exterieur et ensembles comprenant une telle jante et un appui de soutien gonfle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20120119

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MICHELIN RECHERCHE ET TECHNIQUE S.A.

Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20130522