DEVICE FOR MANUFACTURING COIL SPRING AND METHOD FOR MANUFACTURING COIL SPRING

Title:

DEVICE FOR MANUFACTURING COIL SPRING AND METHOD FOR MANUFACTURING COIL SPRING

Document Type and Number:

WIPO Patent Application WO/2016/194482

Kind Code:

A1

Abstract:

A device (1A) for manufacturing coil spring includes: a first continuous material mounting unit (4); a second continuous material mounting unit (5); a straightener (7); a cutting machine (8) for cutting material (2); a short, narrow material mounting unit (9) for mounting short, narrow material (2') that has been cut; and a coiling machine (10). Material (2) fed from first continuous material (2A) or second continuous material (2B) is cut by the cutting machine (8). The device (1A) for manufacturing a coil spring can switch between a first continuous material coiling step for manufacturing a coil spring using the material (2) fed from the first continuous material (2A), a second continuous material coiling step for manufacturing a coil spring using the material (2) fed from the second continuous material (2B), and a short, narrow material coiling step for manufacturing coil springs using the short, narrow material (2').

Inventors:

FURUSE TAKESHI (JP)
KUMAGAWA YUSUKE (JP)

Application Number:

PCT/JP2016/061705

Publication Date:

December 08, 2016

Filing Date:

April 11, 2016

Export Citation:

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Assignee:

NHK SPRING CO LTD (JP)

International Classes:

B21F35/00; B21F1/02; B21F11/00; B21F23/00

Foreign References:

JP2013226584A	2013-11-07
JPH081267A	1996-01-09
JPH11123497A	1999-05-11
JPS58135743A	1983-08-12
JPH05138277A	1993-06-01

Other References: