Stamping die for flattening processing of both ends of reinforcement tube on automobile bumper mounting bracket

Abstract

The invention discloses a stamping die for flattening processing of both ends of a reinforcement tube on an automobile bumper mounting bracket. The stamping die positions parts before flattening processing and does not affect external extending of the parts in the flattening process. The stamping die includes an upper die holder and a lower die holder. A bearing block for accommodating the middlepart of a pipe is arranged on the middle part of the lower die holder, and the upper die holder is provided with a pressing block. Upper forming blocks are separately arranged at the positions, at both ends of the pressing block, on the upper die holder, and the upper die holder is internally provided with nitrogen springs pushing and abutting the upper forming blocks. Lower forming blocks matchedwith the upper forming blocks are separately arranged at the positions, at both ends of the bearing block, on the lower die holder. The lower die holder is internally provided with a limiting block moving up and down, and a positioning pin which penetrates out the lower die holder in a mold opening state to position a workpiece to prevent the pipe from being reversed is arranged close to the endpart, on one side of the workpiece, on the limiting block. A lifting pin which penetrates out the lower die holder in the mold opening state is further arranged on the upper part of the limiting block, and the upper die holder is movably provided with an upper die advance pin which is matched with the lifting pin to press down the top lifting and the limiting block. The upper die holder is internally provided with an upper spring pushing and abutting the upper die advance pin, and the spring force of the upper spring is greater than that of a positioning spring.

Description

technical field [0001] The invention relates to a stamping die, in particular to a stamping die for flattening two ends of a reinforcement tube on an automobile bumper mounting bracket. Background technique [0002] Some pipes are bent with angles at both ends after pre-processing, and the bending angles at the two ends are different, and the lengths are different but not much different, so it is easy for on-site personnel to put them in reverse. And because the parts will become wider during the flattening process, if the conventional front and rear end positioning is adopted, the angle of the pipe will change easily during the flattening process, and the angle after flattening cannot be guaranteed. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a stamping die for the flattening process of both ends of the reinforcement tube on the automobile bumper mounting bracket, which can position the parts before the flat...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a stamping die for flattening the two ends of the reinforcement tube on the mounting bracket of the automobile bumper, which can locate the parts before the flattening process and does not affect the outreach of the parts during the flattening process.

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