Zero scrap manufacturing methods for metal containers, and associated tooling
The zero-scrap method for metal container production, involving cutting and forming metal strips into cylindrical tubes with zigzagged patterns and friction stir welding, addresses the issue of scrap material in existing methods, resulting in reduced waste and improved efficiency in manufacturing metal containers.
WO2025010107A2PCT designated stage expired Publication Date: 2025-01-09STOLLE MACHINERY CO LLC
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Patent Information
- Application Number
- PCT/US2024/030200
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-07-05
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-09
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Figure US2024030200_09012025_PF_FP_ABST
Abstract
A zero-scrap method and associating tooling for manufacturing can bodies is provided. A metal sheet is shorn into strips, and each strip is wound to form a cylindrical tube. Each tube is cut into two or more can bodies using a zigzagged pattern, such that each can body has one planar edge and one zigzagged edge with triangular formations. Each can body is mounted on a mounting base for support while steps are performed to form the zigzagged edge into the can body base. A folding die folds the triangular formations until their apexes all coincide with one another and with the central axis of the can body. A flattening die then flattens the folded formation into a flat end of the can body. A friction stir welding assembly then stir welds the entire flat end of the can body at one time in order to seal all seams.
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