Method for producing a ring-shaped or plate-like element

Patent metadata

Field	Value
Publication number	US-9423218-B2
Application number	US-201113234687-A
Country	US
Kind code	B2
Filing date	Sep 16, 2011
Priority date	Sep 17, 2010
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

The invention relates to a method for producing a ring-shaped or plate-like element, in particular for a metal-sealing material-feedthrough, in particular for devices which are subjected to high pressures, preferably igniters for airbags or belt tensioning devices, whereby a blank, especially in the embodiment of a wire-shaped material is provided and the blank is subjected to processing so that a feedthrough-opening can be incorporated into a ring-shaped or plate-like element created from the blank.

First claim

What is claimed is:

1. A method to produce a cylindrical metal-sealing material-feedthrough, said method comprising the steps of:
producing a cylindrical plate-like body by providing a blank;
processing said blank so that a feedthrough-opening is incorporated into a ring-shaped or plate-like element created from said blank, said feedthrough-opening extending from a back side of said blank to a front side of said blank, said processing step including forming a relief region in said blank extending from said back side toward said front side using a cold forming process, the relief region having a height HF, the step of forming the relief region defining a reduced thickness region DR, said reduced thickness region DR having a thickness being not greater than 3 mm;
punching through the reduced thickness region DR to form the feedthrough-opening;
producing a sealing material including at least one metal pin embedded in said sealing material; and
inserting said sealing material with said at least one metal pin into said feedthrough-opening extending from said back side to said front side of said ring-shaped or plate-like element.

2. The method to produce a metal-sealing material-feedthrough of claim 1 , wherein said blank is cold formed from a cylindrical wire-shaped material.

3. The method to produce a metal-sealing material-feedthrough of claim 2 , wherein said cold-forming process includes compression.

4. The method to produce a metal-sealing material-feedthrough of claim 3 , wherein said compression takes place along a longitudinal axis of said blank formed from a wire-shaped material.

5. The method to produce a metal-sealing material-feedthrough of claim 2 , wherein said ring-shaped or plate-like element has an essentially round outside contour and said feedthrough-opening is located in a center of said ring-shaped or plate-like element.

6. The method to produce a metal-sealing material-feedthrough of claim 2 , wherein, to incorporate said relief region, one of said ring-shaped or plate-like element is pressed against a punch and a material of one of said ring-shaped or plate-like element flows around said punch.

7. The method to produce a metal-sealing material-feedthrough of claim 6 , wherein an essentially conically tapering feedthrough-opening is punched through said reduced thickness region DR.

8. The method to produce a metal-sealing material-feedthrough of claim 2 , wherein cold forming said blank, providing said relief region, and punching said feedthrough opening occur in an essentially equal amount of time.

9. The method to produce a metal-sealing material-feedthrough of claim 2 , wherein, to incorporate said relief region, a punch is pressed against one side of and one of said ring-shaped or plate-like element and a material of and one of said ring-shaped or plate-like element is pushed out on a side opposite said side of said ring-shaped or plate-like element.

10. The method to produce a metal-sealing material-feedthrough of claim 1 , wherein said method further includes heating said ring-shaped or plate-like element and said sealing material, as well as subsequent cooling, so that a connecting bond is formed between said ring-shaped or plate-like element and said sealing material.

11. A method to produce a cylindrical metal-sealing material-feedthrough, said method comprising the steps of:
producing a cylindrical plate-like body by providing a blank;
processing said blank so that a feedthrough-opening is incorporated into a ring-shaped or plate-like element created from said blank, said feedthrough-opening extending from a back side of said blank to a front side of said blank, said processing step including forming a relief region in said blank extending from said back side toward said front side using a punch, the relief region having a height HF, the step of forming the relief region defining a reduced thickness region DR, said reduced thickness region DR having a thickness being not greater than 3 mm;
punching through the reduced thickness region DR to form the feedthrough-opening;
producing a sealing material including at least one metal pin embedded in said sealing material; and
inserting said sealing material with said at least one metal pin into said feedthrough-opening extending from said back side to said front side of said ring-shaped or plate-like element.

12. The method of claim 11 , wherein the processing step includes:
forming the relief region in said blank by pressing the ring-shaped or plate-like element against the punch; or
forming the relief region in said blank by pressing the punch against the ring-shaped or plate-like element.

Assignees

• Hartl Helmut
• Pfeiffer Thomas
• Schott Ag

Inventors

• Hartl Helmut
• Pfeiffer Thomas

Classifications

• Y10T29/49908

  Joining by deforming · CPC title

• F42B3/103 Primary

  Mounting initiator heads in initiators; Sealing-plugs · CPC title

• B60R2021/26029

  Ignitors · CPC title

• B23P15/00

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title

• B21K21/08 Primary

  Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs · CPC title