US 4,059,000 A · Rotary embosser and process of embossing strip sheet metal

Abstract

A rotary embosser for embossing strip sheet metal and having a male embossing roll having a series of upstanding die formations thereon around which the sheet metal runs. One or more indentation rolls having a resilient roll surface are arranged to run in pressurized contact with said embossing roll, said resilient surface being sufficiently resilient to permit indentation of said resilient surface by said male die formations. One indentation roll may be arranged to run in contact with the embossing roll at a point around the circumference thereof spaced down stream from the contact between said embossing roll and the other indentation roll thereby applying tension and pressure to the strip thereby holding the strip in position as it passes around the embossing roll. Tension roll means is arranged upstream around which said sheet metal strip runs, whereby said sheet metal strip is maintained in tension as it passes around both the indentation roll and said embossing roll. In some circumstances it may be sufficient merely to pass the strip between one indentation roll, and the embossing roll and still achieve a sufficient degree of indentation. A process for the rotary embossing of sheet metal is also disclosed.

Claims13

Dependent claims

Apparatus for the continuous formation of transverse indentations in strip sheet material, such as strip sheet steel or the like said apparatus comprising;

male die roll means having a plurality of transverse upstanding male die formations thereon and adapted to be driven at a predetermined speed;
a first female roll member engaging said male die roll means under pressure and having a resilient surface deformable by indentation of said male die formations of said male die roll means into said resilient surface, said strip material passing between said male die roll means and said first female roll member and being thereby indented into said resilient surface;
a second female roll member having a resilient surface which is in pressurized contact with said male die roll means at a point thereon spaced from said first female roll member downstream with respect thereto, said resilient surface being deformed by pressure between said second female roll member and said male die roll means, and said strip material passing therebetween, said resilient surface applying pressure to said strip material, thereby holding the strip material in position against said male die roll means, around a predetermined arc thereof, and maintain said male die formations in contact therewith all around said arc, and,
upstream tension roll means for engaging said strip material prior to passage between said male die roll means and said first female roll member.

1 more element

Dependencies are inferred from the claim text.

Rotary embosser and process of embossing strip sheet metal

Life of this patent

Rotary embosser and process of embossing strip sheet metal

Life of this patent

Abstract

Claims13