Method and device for producing grip ring of pipe joint and grip ring for pipe joint

A technology for manufacturing devices and pipe joints, which is applied in the field of hoops, can solve the problems of decreased effective utilization rate of materials, decreased added value of products, and deterioration of surface properties, and achieves the elimination of winding defects, high effective utilization rate, and good surface properties. Effect
CN1714992AInactive Publication Date: 2006-01-04金井宏彰
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
金井宏彰
Publication Date
2006-01-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A metal wire material suitable for use as a grip ring material, having good surface properties and produced at low cost; a producing method therefor; and a producing device therefor. For this purpose, a metal wire material (34) is passed through a shape correction unit (14) to have its coil-like winding-produced deformation removed. Further, while preventing the downward or upward turn of the metal wire material (34) by upper and lower hold rollers (19, 20, and 26, 27), a continuous wedge-like groove is formed in the metal wire material (34) by a first cutting roller (21) and a second cutting roller (23).
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Description

[0001] The present invention is filed on July 1, 2002 by Hiroaki Kanai, entitled "Metal wire for hoop, method for manufacturing the metal wire for hoop, manufacturing device for metal wire for hoop, and pipe joint using the metal wire." A divisional application of the Chinese patent application No. 02802503.2 of the manufacturing method of the hoop, the manufacturing device of the hoop for the pipe joint, and the hoop for the pipe joint. technical field

[0002] The metal wire material of the present invention is a metal wire material for a hoop used for a pipe joint, which is a connecting part for connecting tubular bodies, and particularly relates to a tubular body that does not need to be processed at the end and is prevented from being inserted from both sides. Axis movement.

[0003] The present invention relates to a hoop used for a pipe joint, which is a connecting part for connecting tubular bodies whose ends do not need to be processed, and which prevents axial moveme...

Claims

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