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Patent Searching and Data


Title:
PUNCH DIE
Document Type and Number:
WIPO Patent Application WO/2014/132849
Kind Code:
A1
Abstract:
A punch die comprising: a punch body including a punch blade, a key, and, on an upper part, a punch driver; a punch guide including an inner hole, which receives the punch body such that the punch body is movable along an axis, and including a key groove, which extends along the axis on an inner circumferential surface of the inner hole and engages with the key; a retainer collar joined to an upper end of the punch guide along the axis such that the retainer collar is rotatable around the axis, and through which the punch driver movably passes; a punch head threadedly fastened to an upper end part of the punch driver to adjust the position of the punch driver; and an elastic member that is positioned between the punch head and the retainer collar, and presses the punch driver upward. The punch guide is provided with a circumferential groove that extends in the circumferential direction and is in communication with the key groove on the inner circumferential surface. The retainer collar is provided with a cylinder that is inserted into and fitted with the punch guide, and, on an outer circumferential surface of the cylinder, an engagement protrusion that can pass through the key groove and can engage with the circumferential groove.

Inventors:
ENDO SHIGERU (JP)
NAKAI HIROSHI (JP)
Application Number:
JP2014/053841
Publication Date:
September 04, 2014
Filing Date:
February 19, 2014
Export Citation:
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Assignee:
AMADA CO LTD (JP)
International Classes:
B21D28/34
Foreign References:
JP2010023097A2010-02-04
JP2007105761A2007-04-26
JP2009233752A2009-10-15
JP2002282962A2002-10-02
US20060081107A12006-04-20
JP2010023097A2010-02-04
Other References:
See also references of EP 2962780A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
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