Optimization design of the frame structure of the stitching machine for cold rolled thin plate post-processing line
Due to the difficulty in demolding after the steel strip is sewn in a certain color coating unit and the easy generation of burrs at the edge of the strip during blanking,which affects the quality of the strip,the main reason is analyzed as the insufficient rigidity of the machine frame,leading to changes in the side clearance between the upper and lower punch of the die.Based on the structural composition and working principle of the strip stitching machine,an optimized design scheme for the machine frame structure is proposed.The force required for steel strip sewing is calculated using the Norris-Lewis formula,and the calculation results are used for the design and selection of the die and cylinder of the sewing machine.Taking the sewing force as the boundary condition,finite element analysis is employed to optimize the design of the machine frame structure.After optimization,the rigidity of the frame and crossbeam meets the requirements,ensuring consistent clearance between each blade of the upper and lower punches,which has greatly reduced the difficulty in demolding after steel strip sewing and the problem of easily produced burrs at the edge of the strip during blan-king.
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