Automatic welding unit of automatic welding production system of net rack connecting rods

Abstract

The invention discloses an automatic welding unit of an automatic welding production system of net rack connecting rods. Steel pipe workpieces can be axially positioned accurately through steel pipe radial clamping and positioning devices, bolts can be accurately coordinate-grabbed and put in the ends of the steel pipe workpieces before welding through a bolt grabbing and stacking mechanical arm and a bolt grabbing and stacking mechanical hand, sealing plate or cone head workpieces can be accurately and coaxially coordinate-positioned at the welding ends of the steel pipe workpieces through sealing plate or cone head pushing devices, through cooperative work of steel pipe rotation drive devices and welding gun devices, the steel pipe workpieces can be controlled through the cooperation ofwelding guns and the steel pipe rotation drive devices to circumferentially rotate to complete one-time welding forming of complete annular weld joints, the automation degree is high, the defects of manual operation can be avoided, the uniformity of the welding weld joints can be guaranteed on the premise of guaranteeing the coaxiality of through holes of sealing plates or cone heads and steel pipe bodies, and the automatic welding unit is especially suitable for the automatic welding production system of the net rack connecting rods.

Description

technical field [0001] The invention relates to an automatic welding unit of an automatic welding production system, in particular to an automatic welding unit of a production system suitable for automatic welding of grid connecting rod workpieces, and belongs to the technical field of grid connecting rod manufacturing. Background technique [0002] The grid structure is a space structure with a large span covered by connecting multiple grid connecting rods through nodes in a certain grid form. The grid structure has the advantages of good integrity, large space rigidity, and stable structure. Not only is it light in weight , The on-site construction workload is small, the construction speed is fast, and the height of the grid structure is small, which can effectively use the space, so it is widely used in the construction industry. [0003] The grid structure nodes made of steel mainly include cross-plate nodes, welded hollow ball nodes and bolt ball nodes. The grid struct...

AI Technical Summary

Problems solved by technology

[0005] 1. Although the pre-spot welding can be carried out by means of tooling positioning, there will still be spot welding deviations in the manual operation method, which cannot accurately ensure the coaxiality of the sealing plate or the through hole of the cone head and the steel pipe body, which will affect the product quality , It is easy to cause subsequent installation problems such as installation eccentricity and eccentric load on the grid connecting rod;

[0006] 2. Although the welding is carried out on the basis of pre-spot welding, the welding of the circular weld, even if the welding method is assisted by tooling, manual welding is usually difficult to ensure the uniformity of the weld, and thus cannot effectively control the welding deformation. control;

[0007] 3. The way of manual operation has high requirements on the skills and proficiency of personnel. During the welding process of circular welds, welding interruptions will inevitably occur, which intensifies the degree of welding deformation, and human factors such as the operator's emotions also affect the welding quality. influence

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