Process for further treating a closure end made of sheet

Details Process for further treating a closure end made of sheet Process for further treating a closure end made of sheet

1998-11-10

1999-11-23

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

723794, B21D 5144

Patent

active

059879564

ABSTRACT:
A process for further treating a closure end made of sheet material is provided, particularly for beverage cans, in which an annular fringe region is radially coupled between the central panel portion and a radius of curvature coupled to a core groove with an inner leg. The central panel portion is squeezed such that material is displaced (flows) from the fringe region in a substantially radial outward direction towards the radius of curvature. The squeezing is accomplished by a coining tool having a coining surface operable to contact the closure end. The closure surface is pressed against the closure end causing the thickness of the sheet material of the closure end to be reduced in the annular fringe region. The reduction in thickness gradually decreasing in the direction of the radius of curvature. The material displaced by the squeezing flowing towards the radius of curvature. A ring tool which is finger like in cross section can be used to exert pressure on the core groove during or after the squeezing thereby causing the inner leg of the core groove to move towards a more vertical orientation.

REFERENCES:
patent: 3441170 (1969-04-01), Khoury
patent: 4354784 (1982-10-01), Westphal

Affiliated with

Also associated with

Rating

Process for further treating a closure end made of sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for further treating a closure end made of sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for further treating a closure end made of sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1208542