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Patent Searching and Data


Title:
METHOD FOR MANUFACTURING CYLINDRICAL CONTAINER
Document Type and Number:
WIPO Patent Application WO/2014/057737
Kind Code:
A1
Abstract:
Provided is a method for manufacturing cylindrical containers using a metal sheet on at least one surface of which metal is exposed, the method being provided with a process for obtaining hexagonal blanks from the metal sheet and a process for working the blanks into a cylindrical shape by pushing in the center portion of the blank with a punch while the periphery of the blank is clamped by a deep drawing die and a blank holder. The method is characterized in that: for the deep drawing die and/or the blank holder, a deep drawing die and/or a blank holder that has, on the portions of the surface thereof that correspond to the sides of the blank, grooved sections in which multiple grooves are formed in the circumferential direction, is used; and the blank is worked into a cylindrical shape by clamping the periphery of the blank with the deep drawing die and the blank holder so that the surface of the blank on which the metal is exposed faces the grooved sections and the sides of the blank are positioned to correspond to the grooved sections.

Inventors:
IKEDA YASUYUKI (JP)
TAYA SHINICHI (JP)
SADAKI KOTA (JP)
Application Number:
PCT/JP2013/072955
Publication Date:
April 17, 2014
Filing Date:
August 28, 2013
Export Citation:
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Assignee:
TOYO KOHAN CO LTD (JP)
International Classes:
B21D22/20; B21D24/12; B21D51/18
Domestic Patent References:
WO1998051426A11998-11-19
WO1999048631A11999-09-30
WO1998051426A11998-11-19
WO1999048631A11999-09-30
Foreign References:
JPS63112029A1988-05-17
JPH02112830A1990-04-25
JPH0744678U1995-11-28
Other References:
See also references of EP 2907596A4
Attorney, Agent or Firm:
TOKOSHIE PATENT FIRM (JP)
It can exceed and is a patent business corporation. (JP)
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