JPS6458533A - Preparation of expansion joint - Google Patents

Preparation of expansion joint

Info

Publication number
JPS6458533A
JPS6458533A JP62217698A JP21769887A JPS6458533A JP S6458533 A JPS6458533 A JP S6458533A JP 62217698 A JP62217698 A JP 62217698A JP 21769887 A JP21769887 A JP 21769887A JP S6458533 A JPS6458533 A JP S6458533A
Authority
JP
Japan
Prior art keywords
main body
bladder
mandrel
diameter
outer peripheral
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
JP62217698A
Other languages
Japanese (ja)
Inventor
Eiji Takemae
Masakazu Koizumi
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.)
Yokohama Rubber Co Ltd
Original Assignee
Yokohama Rubber Co 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 Yokohama Rubber Co Ltd filed Critical Yokohama Rubber Co Ltd
Priority to JP62217698A priority Critical patent/JPS6458533A/en
Publication of JPS6458533A publication Critical patent/JPS6458533A/en
Pending legal-status Critical Current

Links

Landscapes

  • Joints Allowing Movement (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

PURPOSE:To reduce the stress applied to a steel pipe and to facilitate manufacturing, by arranging a bladder to the outer peripheral surface of a mandrel having a diameter small than the inner diameter of a joint body to again insert the same in a primarily molded main body and expanding said bladder to expand the central part of the main body to perform secondary vulcanization. CONSTITUTION:An inner surface rubber 12, a reinforcing cord 13, an end part reinforcing member 14 and outer surface rubber 15 are successively wound around the outer peripheral surface of a mandrel 11 having an outer diameter almost same to the caliber of a steel pipe and primary vulcanization is performed to perform the primary molding of an expansion joint main body 10. Next, the mandrel 11 is pulled out from the main body 10 and a bladder 16 is arranged to the outer peripheral surface of a mandrel having a diameter smaller than the inner diameter of the main body 10 to be again inserted in the primarily molded main body 10. From this state, the bladder 16 is again expanded by a vulcanization apparatus to expand the central part 10a of the main body 10 and secondary vulcanization is performed in this state to mold the expansion joint main body 10 whose central part expands.
JP62217698A 1987-08-31 1987-08-31 Preparation of expansion joint Pending JPS6458533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217698A JPS6458533A (en) 1987-08-31 1987-08-31 Preparation of expansion joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217698A JPS6458533A (en) 1987-08-31 1987-08-31 Preparation of expansion joint

Publications (1)

Publication Number Publication Date
JPS6458533A true JPS6458533A (en) 1989-03-06

Family

ID=16708322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217698A Pending JPS6458533A (en) 1987-08-31 1987-08-31 Preparation of expansion joint

Country Status (1)

Country Link
JP (1) JPS6458533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9834733B2 (en) 2012-12-27 2017-12-05 Mitsubishi Heavy Industries, Ltd. Char removal pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9834733B2 (en) 2012-12-27 2017-12-05 Mitsubishi Heavy Industries, Ltd. Char removal pipe

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