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A combined floating electrode and method of use thereof

A floating electrode and combined technology, which is applied in the field of resistance welding electrodes, can solve the problems of inability to observe the degree of electrode wear, sag, and difficulty in using the movable pole arm of C-type welding tongs, etc., to achieve non-wearing, simple connection, and smooth solder joint surface Effect

Active Publication Date: 2017-04-26
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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  • A combined floating electrode and method of use thereof
  • A combined floating electrode and method of use thereof
  • A combined floating electrode and method of use thereof

Examples

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Effect test

Embodiment 1

[0053] see Figure 1 to Figure 2 , a combined floating electrode, including 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 Cap 2 and conical compression spring 3; the upper part of the electrode connecting rod 1 is the first cone 11 connected with the electrode rod, the middle is a cylindrical transition section 13 with external processing thread, 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 in the outside, and the inner electrode cap 2 is located in the inside of the conical compression spring 3, and the conical compression spring 3 The upper end radius is smaller than the lower end radius, the upper end of the conical compression spri...

Embodiment 2

[0056] Embodiment 2: basically the same as Embodiment 1, the difference is:

[0057] see image 3 , when the combined floating electrode is used as the upper electrode for projection welding, the lower end surface of the No. 1 workpiece 61 is completely attached to the upper end surface of the No. 2 workpiece 62. 4 Contact with the No. 1 workpiece 61, and the common electrode 7 contacts with the No. 2 workpiece 62. Under the welding pressure, the conical compression spring 3 is gradually compressed so that the lower end surface of the outer electrode cap 4 fits with the upper end surface of the No. 1 workpiece 61, and continues to compress Finally, the inner electrode cap 2 is in contact with the outer electrode cap 4, and the force on each bump of the No. 1 workpiece 61 is the same. At this time, the lower end surface of the No. 1 workpiece 61 is completely attached to the upper end surface of the No. 2 workpiece 62.

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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 its use method, which are suitable for ensuring the smoothness of the welding spot surface of automobile appearance parts and improving the quality of projection welding. Background technique [0002] At present, in order to ensure the surface smoothness of the A-level surface of the car, ordinary spherical (or truncated cone) electrodes are usually used in manufacturing to add copper backing plates or floating electrode spot welding, but there are some problems, such as: ordinary spherical (or truncated cone) 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 welding sample needs to be rearranged, which reduces production efficiency and is difficult to apply to the assembly station; If the ...

Claims

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Application Information

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Patent Type & Authority Patents(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