JPS57167239A - Molding method of radial tire and molding machine therefor - Google Patents

Molding method of radial tire and molding machine therefor

Info

Publication number
JPS57167239A
JPS57167239A JP56052776A JP5277681A JPS57167239A JP S57167239 A JPS57167239 A JP S57167239A JP 56052776 A JP56052776 A JP 56052776A JP 5277681 A JP5277681 A JP 5277681A JP S57167239 A JPS57167239 A JP S57167239A
Authority
JP
Japan
Prior art keywords
tire
projection
recess
molding
layer
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.)
Pending
Application number
JP56052776A
Other languages
Japanese (ja)
Inventor
Tadao Kono
Yoshihide Kojima
Hiroshi Yoshinaga
Kazuo Kakumaru
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.)
Sumitomo Rubber Industries Ltd
Original Assignee
Sumitomo Rubber Industries Ltd
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 Sumitomo Rubber Industries Ltd filed Critical Sumitomo Rubber Industries Ltd
Priority to JP56052776A priority Critical patent/JPS57167239A/en
Publication of JPS57167239A publication Critical patent/JPS57167239A/en
Pending 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)
    • B29D30/52—Unvulcanised treads, e.g. on used tyres; Retreading

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tyre Moulding (AREA)
  • Testing Of Balance (AREA)

Abstract

PURPOSE:To improve uniformity of products during molding process of a radial tire, by a method wherein variation of radius in a tire crown part is detected by waveform before and after applying a breaker layer of a tread layer thereon, and projection and recess are cancelled with each other corresponding to the waveform variation. CONSTITUTION:A green tire 1 is deformed in troidal shape by combining a carcass layer 15 with a bead wire 16 and a side wall 17, and a breaker layer 7 is applied to the crown part of the tire. The green tire 1 is put onto a former 3 supported by a molding drum shaft 2, and a displacement detector 4 for detecting the projection and recess is installed to the crown part. If the detecting roller 6 of the displacement detector 4 is contacted with the surface of the breaker layer 7 and the tire 1 is rotated one round, the roller 6 generates wave form signal corresponding to one round as output of the detector 4. Since the molding machine automatically rotates or stops the projection and recess of the tire to a prescribed position based on the waveform signal, molding workers can easily correct the projection and recess in each revolution angle based on amplitude value in digital notation.
JP56052776A 1981-04-07 1981-04-07 Molding method of radial tire and molding machine therefor Pending JPS57167239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56052776A JPS57167239A (en) 1981-04-07 1981-04-07 Molding method of radial tire and molding machine therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56052776A JPS57167239A (en) 1981-04-07 1981-04-07 Molding method of radial tire and molding machine therefor

Publications (1)

Publication Number Publication Date
JPS57167239A true JPS57167239A (en) 1982-10-15

Family

ID=12924255

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56052776A Pending JPS57167239A (en) 1981-04-07 1981-04-07 Molding method of radial tire and molding machine therefor

Country Status (1)

Country Link
JP (1) JPS57167239A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625308A1 (en) * 1987-12-25 1989-06-30 Bridgestone Corp NON-DESTRUCTIVE METHOD FOR DETECTING DEFECTS IN A PNEUMATIC
EP0813952A2 (en) * 1996-06-21 1997-12-29 Sumitomo Rubber Industries Limited Method and apparatus for manufacturing a tyre
WO2008062609A1 (en) * 2006-11-20 2008-05-29 Bridgestone Corporation Method for measuring tire, device for measuring tire, and tire-molding device
JP2010214642A (en) * 2009-03-13 2010-09-30 Bridgestone Corp Tire molding apparatus and tire molding method
JP2014074590A (en) * 2012-10-02 2014-04-24 Sumitomo Rubber Ind Ltd Device for measuring contour shape of core assembly and raw tire inspection method using the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625308A1 (en) * 1987-12-25 1989-06-30 Bridgestone Corp NON-DESTRUCTIVE METHOD FOR DETECTING DEFECTS IN A PNEUMATIC
US4934184A (en) * 1987-12-25 1990-06-19 Bridgestone Corporation Method of detecting defects in pneumatic tire in non-destructive manner
EP0813952A2 (en) * 1996-06-21 1997-12-29 Sumitomo Rubber Industries Limited Method and apparatus for manufacturing a tyre
EP0813952A3 (en) * 1996-06-21 1999-01-13 Sumitomo Rubber Industries Limited Method and apparatus for manufacturing a tyre
WO2008062609A1 (en) * 2006-11-20 2008-05-29 Bridgestone Corporation Method for measuring tire, device for measuring tire, and tire-molding device
JP5036069B2 (en) * 2006-11-20 2012-09-26 株式会社ブリヂストン Tire measuring method, measuring apparatus and tire forming apparatus
JP2010214642A (en) * 2009-03-13 2010-09-30 Bridgestone Corp Tire molding apparatus and tire molding method
JP2014074590A (en) * 2012-10-02 2014-04-24 Sumitomo Rubber Ind Ltd Device for measuring contour shape of core assembly and raw tire inspection method using the same

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