Punching die and punching method for rectangular tube

Abstract

The invention discloses a punching die and a punching method for a rectangular tube, and relates to the field of square steel tube processing and producing. The die includes an upper die assembly anda lower die assembly; the upper die assembly comprises an upper template, an upper die core seat and a plurality of upper die cores; the upper die core seat is fixed at the bottom of the upper template, and the upper die cores are fixed at the lower end of the upper die core seat; the lower die assembly comprises a supporting seat, a lower die core seat, a lower die core and a plurality of baffles; the lower die core seat and the baffles are fixed on the supporting seat, the baffles are symmetrically arranged on the two sides of the lower die core seat, the lower die core is fixed on the lowerdie core seat, and a plurality of die core holes matched with the upper die cores are formed in the lower die core; and a material storing cavity is formed in the outer edge of the lower die core after the upper die assembly and the lower die assembly are buckled up and down. According to the punching die, the lower die core is arranged in the lower die assembly, the rectangular tube is arrangedon the lower die core in a sleeving mode, and the rectangular tube is prevented from deformation due to punching; and a guiding function is also achieved by inserting the rectangular tube in the lowerdie core, the deflection of the rectangular tube is avoided, the positioning accuracy of the punching is high, and the punching quality is greatly improved.

Description

technical field [0001] The invention relates to the field of processing and production of square steel pipes, in particular to a rectangular pipe punching die and a punching method. Background technique [0002] Rectangular tube is a hollow square cross-section light-weight thin-walled steel tube, also known as cold-rolled steel profile, usually using Q235 hot-rolled or cold-rolled strip or coil as the base material, after cold-bending The section steel with square cross-section shape and size made by frequency welding is divided into seamless steel pipe and welded steel pipe, and seamless steel pipe is divided into hot-rolled seamless square tube, cold-drawn seamless square tube, and extruded seamless square tube. Rectangular tubes are widely used in construction, machinery manufacturing, power engineering and other fields. For example, shipbuilding, solar power generation supports, steel structure engineering, agricultural and chemical machinery, glass curtain walls, autom...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that the pipe punching die in the prior art will cause the side wall of the rectangular pipe to deform when punching the rectangular pipe, affect the punching quality, or even fail to punch the hole, the present invention provides a rectangular pipe punching die and In the punching method, a lower mold core is set in the lower mold assembly. When punching, the rectangular tube is placed on the lower mold core, which avoids the deformation of the rectangular tube by stamping. In addition, the lower mold core also plays a guiding role for the insertion of the rectangular tube. , to avoid the deviation of the rectangular tube, improve the positioning accuracy of the punching hole, and greatly improve the quality of the punching process

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