Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process

A pressing device and single-sided spot welding technology, which is applied in auxiliary devices, welding equipment, welding equipment, etc., can solve problems such as cracking of solder joints, failure to meet flatness requirements, and large deformation of plates, so as to improve flatness and movement The effect of smoothing and reducing production costs

Active Publication Date: 2014-02-12
CRRC QINGDAO SIFANG CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

In the process of welding large-scale plates of other materials and other structures with welding devices, the plates may not meet the flatness requirements, or there may be large deformations after welding. In severe cases, solder joints may crack due to deformation stress. The phenomenon

Method used

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  • Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process
  • Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process
  • Compressing device for single-side spot welding of stainless steel sidewall, spot welding machine and welding process

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 2 with image 3 Shown, a kind of spot welding machine of the present invention comprises welder gantry 1, welding platform 3, hold-down device 4 and spot welding electrode, and the uppermost layer of welding platform 3 is copper platform 15, and the upper electrode 16 that spot welding is used and the auxiliary electrode 17 are fixed on the welder gantry 1, the auxiliary electrode 17 is connected with the copper platform 15, the side wall 2 to be welded is placed on the uppermost copper platform 15 of the welding platform 3, and the pressing device 4 is used for pressing the side wall2.

[0036] Such as Figure 4 As shown, the pressing device 4 includes a column 6 positioned on both sides of the welding platform 3 and a crossbeam 5 connecting the two columns 6, the crossbeam 5 spans the top of the welding pla...

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Abstract

The invention relates to a compressing device for single-side spot welding of a stainless steel sidewall, a spot welding machine and a welding process. The spot welding machine comprises a welder gantry, a welding platform, and spot welding electrodes. The welding platform is used for holding a sidewall to be welded. The compressing device is disposed on the welding platform and comprises two vertical posts arranged on two sides of the welding platform, and a cross beam crossing over the welding platform and connecting the two vertical posts. The cross beam is provided with a plurality of compressing parts used for compressing the sidewall. The vertical posts are movably connected with the welding platform. A frame and a wallboard are integrally compressed with the compressing device, the frame is tightly attached to the outer face of the wallboard and the platform, corrugated deformation of a workpiece is eliminated by pressure of an air cylinder, the wallboard and the frame form a whole after spot welding, and the whole is higher in rigidity; after compressing force is removed, the outer surface can still be even and flatness is improved.

Description

technical field [0001] The invention belongs to the technical field of welding devices, and relates to a pressing device for single-sided spot welding of a stainless steel side wall, a spot welding machine and a welding process. Background technique [0002] Stainless steel is a clean, environmentally friendly, durable, high-strength, and corrosion-resistant material. It is widely used in rail vehicle bodies. Due to its special physical properties, it is easy to produce large deformation after welding; while the existing The side wall of the steel structure of the car body generally adopts a plate beam structure, and the outer wall panels and beams are formed by cold pressing of austenitic stainless steel plates and spot welded by single-sided spot welding equipment. [0003] Figure 1 : A structural diagram of a prior art welding platform. [0004] Such as Figure 1 As shown, during the spot welding process, the side wall elements are in a free and unconstrained state. Du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/10B23K11/36B23K37/04
CPCB23K11/11B23K11/36B23K37/0435B23K2103/04
Inventor 高岩安福军孙红霞云增波
Owner CRRC QINGDAO SIFANG CO LTD
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