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[CN 202110280112.7] Multi-stage plunger press system and method with interlocking fingers for forming battery cell tabs
[CN 202110280112.7] Multi-stage plunger press system and method with interlocking fingers for forming battery cell tabs Title: Multi-stage plunger press system and method with interlocking fingers for forming battery cell tabs Application number: CN 202110280112.7 Applicant: General Motors Global Technology Operations Co., Ltd. Application date: 2021-3-16 Patent type: A metalworking system for forming a metal workpiece, a method for manufacturing such a workpiece and a method for operating such a system, and a battery cell tab bent by multi-stage plunger pressure are presented. The metalworking system includes a plunger clamp mounted adjacent a metal workpiece, and a plunger head movably mounted to the plunger clamp for movement between an activated position and a deactivated position. A first row of plunger fingers is mounted to the plunger head and moves in one direction to press against a metal workpiece and bend it by a predefined bend angle. Likewise, a second row of plunger fingers is mounted to the plunger head and moves in the opposite direction to press against another metal workpiece and bend it to another predefined bend angle. In cooperation with the plunger fingers bending the metal workpieces, the plunger head is then moved to the activated position to cause the plunger fingers to bend the workpieces by an additional respective bend angle.
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