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On-line cold bending steel fast punching and riveting mold and its punching and riveting method

A cold-formed steel and self-piercing riveting technology, applied in the field of metal plastic forming, can solve the problems of thermal deformation, cremation, harmful gas, high connection cost, high price, etc., and achieves smooth and beautiful riveting surface, easy maintenance and replacement, no Effects of Environmental Pollution

Inactive Publication Date: 2007-04-11
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the production of cold-formed steel, the common method is to spot weld or rivet the profile after cold-formed, but the spot welding equipment is expensive and the connection cost is high. At the same time, the spot welding connection destroys the surface coating of the plate, which will cause thermal deformation , cremation and harmful gases, low production efficiency and other shortcomings
However, the existing rivetless riveting machines are expensive and are not suitable for riveting online profiled steel
The method disclosed in the "Rivetless Metal Riveting Method" (Patent No. 02132407.7) invented by Wang Mingjia is only suitable for flat plate connection, not suitable for riveting of online section steel, and the production efficiency is low

Method used

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  • On-line cold bending steel fast punching and riveting mold and its punching and riveting method
  • On-line cold bending steel fast punching and riveting mold and its punching and riveting method
  • On-line cold bending steel fast punching and riveting mold and its punching and riveting method

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Embodiment Construction

[0012] Fig. 1 and Fig. 2 are an embodiment of the present invention.

[0013] As shown in Figure 1, the self-piercing riveting mold includes two parts, the upper mold 2 and the lower mold 1, and the upper and lower molds are guided by guide pillars 3 and guide sleeves 4. The punching die 6 is fixed on the left slider 11 of the lower die, the punching die 8 is composed of three parts, the outer layer is equipped with an elastic rubber sleeve, and then installed on the ejector rod, which is installed on the right slider 9 One side of the punching riveting punch is provided with a pressing device 7; the horizontal movement of the punching riveting punch 6 and the die 8 is realized by the oblique wedge 5 and the left and right sliders 11 and 9; when the punching riveting punch 6 punches The discharged material enters the punching riveting die 8 (its structure is shown in Fig. 4, and it is made up of female die 17, push rod 18 and elastic rubber sleeve, and after the elastic rubber...

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Abstract

The present invention provides on-line cold bent steel fast punching and riveting mold and method, and belongs to the field of plastic forming technology for metal. The punching and riveting mold includes two parts, the upper and the lower molds, guided with guide column and guide sleeve, the male punching and riveting mold with holder on its one side and the female punching and riveting mold are fixed onto the left block and the right block of the lower mold, and the male punching and riveting mold and the female punching and riveting mold are shifted horizontally by means of one inclined wedge and the left block and the right block. The cold bent shaped steel are punched and riveted by means of the hydraulic cylinder and the punching and riveting mold. The shaped steel is located precisely so as to realize the fast on-line fast punching and riveting. The present invention has the advantages of simultaneous connection of several points, high punching and riveting quality, long mold life, etc.

Description

technical field [0001] The invention belongs to the technical field of metal plastic forming, and in particular provides an online cold-formed steel fast self-piercing riveting mold and a self-piercing riveting method. Background technique [0002] In the production of cold-formed steel, the common method is to spot weld or rivet the profile after cold-formed, but the spot welding equipment is expensive and the connection cost is high. At the same time, the spot welding connection destroys the surface coating of the plate, which will cause thermal deformation , cremation and harmful gases, low production efficiency and other shortcomings. And the existing rivetless riveting machine is expensive, and is not suitable for the riveting of online section steel. The method disclosed in the "rivetless metal riveting method" (patent No. 02132407.7) invented by Wang Mingjia is only suitable for flat plate connection, not suitable for riveting of online section steel, and the product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J15/38B21J15/20B21J15/28
Inventor 韩静涛赵中里刘新忠
Owner UNIV OF SCI & TECH BEIJING
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