Container, and selectively formed cup, tooling and associated method for providing same

Patent metadata

Field	Value
Publication number	US-11826809-B2
Application number	US-201916681018-A
Country	US
Kind code	B2
Filing date	Nov 12, 2019
Priority date	Oct 21, 2009
Publication date	Nov 28, 2023
Grant date	Nov 28, 2023

Abstract

A container, such as a beverage or food can is provided, which includes a first sidewall, a second sidewall and a bottom portion extending between the first and second sidewalls. The material of the bottom portion is stretched relative to the first sidewall and the second sidewall to form a thinned preselected profile, such as a dome. The material of the container at or about the dome has a substantially uniform thickness. The container is formed from a blank of material, which has a base gauge prior to being formed. After being formed, the blank of material of the container at or about the dome has a thickness less than the base gauge. Tooling having a clamp bead, or a progressive clamp bead, for selectively forming a blank of material into a container, as well as an associated method are also disclosed.

First claim

What is claimed is:

1. Tooling for selectively forming a blank of material into a container, the container including a sidewall and a bottom portion, the tooling comprising:
an upper tool assembly;
a lower tool assembly;
the upper tool assembly and the lower tool assembly include a number of clamp beads;
wherein the upper tool assembly and the lower tool assembly are structured to clamp the bottom portion inboard of the sidewall with the number of clamp beads to prevent material in the sidewall from flowing into the bottom portion when the bottom portion is stretched, wherein;
the upper tool assembly includes a forming punch;
the number of clamp beads includes a number of clamp bead recesses on the forming punch:
wherein the lower tool assembly includes a pad; and
the number of clamp beads includes a number of clamp bead projections on the pad.

2. The tooling of claim 1 wherein said upper tool assembly and the lower tool assembly are structured to progressively clamp the bottom portion.

3. The tooling of claim 1 wherein said lower tooling assembly includes a selectable hybrid bias generating assembly.

4. The tooling of claim 3 wherein the selectable hybrid bias generating assembly includes a pressure generating assembly and a mechanical bias assembly.

5. The tooling of claim 1 wherein:
said lower tool assembly includes a hybrid bias generating assembly; and
the hybrid bias generating assembly is operatively coupled to said lower tool assembly.

6. The tooling of claim 5 wherein the hybrid bias generating assembly includes a pressure generating assembly, a mechanical bias assembly, and a number of hybrid components.

7. The tooling of claim 5 wherein the hybrid bias generating assembly is an active hybrid bias generating assembly.

8. The tooling of claim 5 wherein:
the lower tool assembly includes a pressure chamber;
the pressure generating assembly is structured to pressurize the pressure chamber; and
the mechanical bias assembly includes a number of springs.

9. The tooling of claim 1 wherein the number of clamp beads are a number of progressive clamp beads.

10. The tooling of claim 9 wherein:
the lower tool assembly includes a riser assembly;
said riser assembly having a pressure surface; and
said riser assembly operatively coupled to said pad.

11. The tooling of claim 1 wherein:
the lower tool assembly further includes a contour; and
wherein the contour engages and stretches the bottom portion to form a thinned preselected profile.

12. The tooling of claim 11 wherein said contour is a dome.

13. The tooling of claim 11 wherein the upper tool assembly and the lower tool assembly are structured to stretch the bottom portion at or about the contour so as to have a substantially uniform thickness.

Assignees

• Stolle Machinery Co Llc

Inventors

• Carstens Aaron E
• Mcclung James A
• Mccarty Patrick K
• Butcher Gregory H

Classifications

• B21D22/20 Primary

  Deep-drawing (special deep-drawing arrangements in, or in connection with, presses B21D24/00) · CPC title

• B21D24/005

  Multi-stage presses · CPC title

• B21D51/26

  cans or tins; Closing same in a permanent manner (making outlet arrangements B21D51/38; welding or soldering B23K) · CPC title

• B65D1/165

  Cylindrical cans · CPC title

• B21D22/30

  to finish articles formed by deep-drawing · CPC title