Metal deforming – By use of closed-die and coacting work-forcer – Cup or shell drawing
Utility Patent
1998-11-25
2001-01-02
Larson, Lowell A. (Department: 3725)
Metal deforming
By use of closed-die and coacting work-forcer
Cup or shell drawing
C072S348000
Utility Patent
active
06167742
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a drawing and coining die for manufacturing metal containers and the like.
It is known that metal containers, such as for example pans in their many constructive shapes, and similar items, are manufactured by means of dies associated with a press. The finished product is obtained starting from a metal disk which is first drawn by the action of a male element combined with a matrix, assuming the intended shape without substantial changes in thickness, and with a final coining to obtain a shape which is modulated with different thicknesses.
SUMMARY OF THE INVENTION
The aim of the present invention is to provide a die which has improved characteristics with respect to existing dies.
This aim is achieved by a drawing and coining die for manufacturing metal containers and the like, according to the invention, characterized in that: a matrix, which is connected to an upper base adapted to be associated with a moving slider of a press and comprises a plate slidingly associated at the bottom and is provided with elastic means in contrast with said upper base; a male element, which is connected to a lower base adapted to be associated with a footing of a press and is shaped so as to make contact with an edge of a resulting container; a blank holder, which is slidable in contact with the male element, is provided with underlying movement means and comprises, at an upper face, means for resting and centering a disk that constitutes the material to be processed.
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Patent Abstracts of Japan vol. 005, No. 206 (M-104), Dec. 26, 1981—& JP 56 122 634 A(Toshiba Corp), Sep. 26, 1981 *abstract*.
Patent Abstracts of Japan vol. 007, No. 250 (M-254), Nov. 8, 1983—& JP 58 1357 32 A (Shinsei Kinzoku Kogyo KK), Aug. 12, 1983 * abstract.
Attrezzeria M.V. di Marin Visino e C. S.n.c.
Josif Albert
Larson Lowell A.
Modiano Guido
O'Byrne Daniel
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