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Combined type floating electrode and use method thereof

A floating electrode, combined technology, applied in the field of resistance welding electrodes, can solve the problems of depression, difficulty in applying C-type welding tong moving pole arm, inability to observe the degree of electrode wear, etc. Effect

Active Publication Date: 2015-11-04
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the surface of the part is sunken, the wear degree of the electrode cannot be observed, and it is difficult to apply to the moving pole arm of the C-type welding tongs. Abrasion degree and combined floating electrode applicable to movable pole arm of C-type welding tongs and method of use thereof

Method used

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  • Combined type floating electrode and use method thereof
  • Combined type floating electrode and use method thereof
  • Combined type floating electrode and use method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] see Figure 1 to Figure 2 , a combined floating electrode, comprising an electrode post 1 and an outer electrode cap 4, the projection of the lower end of the electrode post 1 in the vertical direction is located inside the outer electrode cap 4; the combined floating electrode also includes an inner electrode The cap 2 and the conical compression spring 3; the upper part of the electrode post 1 is the first cone 11 connected with the electrode rod, the middle is the cylindrical transition section 13 externally machined with threads, and the lower part is connected with the inner electrode cap 2 The second cone 12, the lower end of the second cone 12 is inlaid with the inner cone surface 21 of the inner electrode cap 2 wrapped around the outside, the inner electrode cap 2 is located inside the conical compression spring 3, and the conical compression spring 3 The radius of the upper end is smaller than the radius of the lower end, the upper end of the conical compressio...

Embodiment 2

[0056] Embodiment 2: It is basically the same as Embodiment 1, except that:

[0057] see image 3 , when the combined floating electrode is used as the upper electrode for projection welding, the lower end face of the No. 1 workpiece 61 and the upper end face of the No. 2 workpiece 62 are completely fitted, which means: after the welding process starts, the outer electrode cap is first 4 is in contact with the No. 1 workpiece 61, and the common electrode 7 is in contact with the No. 2 workpiece 62. Under the action of the welding pressure, the conical compression spring 3 is gradually compressed so that the lower end face of the outer electrode cap 4 is in contact with the upper end face of the No. 1 workpiece 61, and continues to compress Afterwards, the inner electrode cap 2 is in contact with the outer electrode cap 4, and each bump of the No. 1 workpiece 61 is subjected to the same amount of force.

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Abstract

A combined type floating electrode comprises an electrode extension rod and an outer electrode cap. The electrode extension rod comprises a first circular cone, a cylindrical transition segment and a second circular cone which are connected in sequence. The second circular cone and an inner electrode cap match. The inner electrode cap is located in a conical compression spring. The radius of the upper end of the conical compression spring is smaller than that of the lower end of the conical compression spring. The upper end of the conical compression spring is connected with the cylindrical transition segment, and the lower end of the conical compression spring is connected with an open end. The outer side of the open end is in smooth connection with the bottom of the outer electrode cap through an arc side face, and the inner bottom and the outer bottom of the outer electrode cap are smooth planes. In the use process, the conical compression spring is gradually compressed by welding pressure till two workpieces are attached completely. After powering on, resistance heat is generated by the contact faces of the two workpieces so that the workpieces can be partially molten to form a melting core. After powering off, the welding pressure is removed, and the two workpieces are welded together. According to the design, it can be guaranteed that the surface of a welding point is smooth, and the abrasion degree of the electrode can be observed at any time; the combined type floating electrode is high in work reliability, easy and convenient to operate, high in projection welding quality and capable of being used for C-type electrode holders.

Description

technical field [0001] The invention relates to a resistance welding electrode, in particular to a combined floating electrode and a method for using the same, which are suitable for ensuring the smoothness of the welding point surface of automobile exterior parts and improving the quality of projection welding. Background technique [0002] At present, in order to ensure the surface flatness of the A-level surface of automobiles, ordinary spherical (or frustum-shaped) electrodes plus copper pads or floating electrodes are usually used for spot welding, but there are some problems, such as: ordinary spherical (or frustum-shaped) electrodes plus Copper backing plates usually require special fixtures or templates to ensure the welding position. The fixtures increase the complexity of the equipment and increase the production cost. Each time the welding template needs to be rearranged, the production efficiency is reduced, and it is difficult to apply to the final assembly stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/30B23K11/14B23K11/11
CPCB23K11/115B23K11/14B23K11/3009
Inventor 张龙张巍巍彭振国柳桂林郭晓林
Owner DONGFENG COMML VEHICLE CO LTD