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Patent Searching and Data


Title:
CURLING DEVICE
Document Type and Number:
Japanese Patent JP2015128785
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a curling device that can perform curling around edges without causing failures, even if a tubular body with a thin thickness and comprising a metal material which is hard and is hard to extend and that can easily be maintained.SOLUTION: An oil supply pipe body 10 is fixed with a fixed die 2. A curling surface 34a is formed in a curling die 3, the curling surface that forms an annular shape corresponding to an end edge 10a of the oil supply pipe body 10 fixed to the fixed die 2, and gradually increases the diameter thereof as going to the side of an anti-fixed die 2. A circumference of the end edge 10a of the oil supply pipe body 10 sequentially comes into slide contact with an outer circumferential side from an inner circumferential side of the curling surface 34a by an approach operation of the curling die 3 to the fixed die 2, and is curled to the outside in the radial direction of the oil supply pipe body 10. A vibration generator 5 for vibrating a punch die 3b of the curling die 3 is mounted on the punch die 3b, when bringing the curling die 3 close to the fixed die 2.

Inventors:
HATTORI TSUGIO
ITAOKA TAKESHI
Application Number:
JP2014001858A
Publication Date:
July 16, 2015
Filing Date:
January 08, 2014
Export Citation:
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Assignee:
KEYLEX CORP
International Classes:
B21D19/12; B21D19/08; B21D41/02
Domestic Patent References:
JP2003145240A2003-05-20
JPH11300423A1999-11-02
JPH03180223A1991-08-06
JPH05337577A1993-12-21
JPH04231118A1992-08-20
JP2004090877A2004-03-25
Foreign References:
GB2251570A1992-07-15
Attorney, Agent or Firm:
Maeda patent office