Anti-deformation punching and bending die for thin-walled pipe

Abstract

The invention discloses an anti-deformation punching and bending die for a thin-walled pipe. The die is efficient in forming and good in finished product quality. The anti-deformation punching and bending die comprises an upper die base and a lower die base; a material bearing block which moves up and down is movably arranged in the middle of the lower die base; a material pressing block which ismatched with the material bearing block and used for pressing a workpiece is arranged on the upper die base; upper forming blocks used for bending the pipe are arranged on the positions, at two ends of the material pressing block, of the upper die base correspondingly; forming grooves matched with the bent pipe are formed in the upper forming blocks; lower forming blocks which can rotate up and down and are used for supporting the bent part of the pipe are hinged to the lower die base; the lower die base is internally provided with tension springs which are used for allowing the upwards-rotated lower forming blocks to be reset, wherein the tension springs are located at the ends, far away from hinge shafts, of the lower forming blocks; a movable seat which slides in the length direction ofthe pipe is arranged on the lower die base; a pair of mounting seats are arranged on the movable seat in parallel; the mounting seats are provided with arc-shaped guide grooves with circle centers located on the bending axis of the pipe; supporting core rods matched with the pipe are movably arranged between the two mounting seats; and short shafts which are embedded into the guide grooves and freely rotate are arranged on the two sides of the supporting core rods.

Description

technical field [0001] The invention relates to an anti-deformation punching and bending die for thin-walled pipes. Background technique [0002] When using a pipe bending machine to process a pipe with both ends bent upwards, the shape of the pipe is unstable, especially when processing a thin-walled pipe, the inner wall of the pipe bend is easy to wrinkle, the outer wall is easy to be flattened, and the front and rear ends of the pipe are easy to widen and bend. The pipe bending machine is inefficient. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an anti-deformation punching and bending die for forming thin-walled tubes with high efficiency and good quality. [0004] In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: a deformation-resistant stamping bending die for thin-walled pipes, including an upper mold base and a lower mold base, and th...

AI Technical Summary

Problems solved by technology

[0002] When using a pipe bending machine to process a pipe with both ends bent upwards, the shape of the pipe is unstable, especially when processing a thin-walled pipe, the inner wall of the pipe is easy to wrinkle, the outer wall is easy to be flattened, and the front and rear ends of the pipe are easy to widen, and the bending Tube bending machine inefficiency

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