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Patent Searching and Data


Title:
PIPE END PART PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/021554
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a pipe end part processing device with a function for holding a pipe end part that can process expanded parts just by applying stress to the pipe from one end part. In order to achieve this purpose, a pipe end part processing device 1 has a female mold 20 having a forming surface for an expanded part and a male mold 30 for pressing the surface to be formed of the pipe into the forming surface of the female mold. The female mold has a through hole 21, the diameter of one side of the through hole being enlarged, and the forming surface 22 for the expanded part being formed on the inside periphery thereof. The male mold, which is inserted into the through hole of the female mold, is formed from a cored bar 31 that is moved in the axial direction by a drive device provided on the other side of the female mold, and a cylindrical elastic body 32 externally fitted onto the end part of the cored bar that protrudes to the one side of the female mold which, by being compressed in the axial direction by the movement of the cored bar, is deformed so as to expand in the radial direction such that the surface to be formed of the pipe is pressed against the forming surface of the female mold.

Inventors:
LIU Jining (LTD. 758 Konosu Koga-sh, Ibaraki 41, 〒3060041, JP)
NAKAZATO Kazuhiko (LTD. 758 Konosu Koga-sh, Ibaraki 41, 〒3060041, JP)
Application Number:
JP2018/016501
Publication Date:
January 31, 2019
Filing Date:
April 23, 2018
Export Citation:
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Assignee:
SANOH INDUSTRIAL CO., LTD. (1-23-23, Ebisu Shibuya-k, Tokyo 13, 〒1500013, JP)
International Classes:
B21D41/02; B21D37/01; B21D37/16; B29C57/06
Attorney, Agent or Firm:
IWANE Masatoshi (5-33-4, Minami-Oizumi Nerima-k, Tokyo 64, 〒1780064, JP)
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