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Indirect spot welding device and welding method

A spot welding device and indirect technology, applied in welding equipment, resistance welding equipment, manufacturing tools, etc., can solve the problems of long distance between ground electrode and welding electrode, difficulty in improving welding operation efficiency, and difficulty in welding operation, etc. Achieve the effect of suppressing inactive current, shortening energization time, and improving efficiency

Active Publication Date: 2022-07-08
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the distance between the ground electrode and the welding electrode becomes longer, so there are problems such as large-scale equipment, difficulty in welding work in narrow areas, increase in reactive current during welding, and difficulty in improving the efficiency of welding work.

Method used

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  • Indirect spot welding device and welding method
  • Indirect spot welding device and welding method
  • Indirect spot welding device and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0077]

[0078] like Figure 1 to Figure 4 As shown, the indirect spot welding apparatus 1 of Embodiment 1 includes the ground electrode 11 , the opposing member 12 , and the welding electrode 13 . In addition, two plate-shaped members M1 and M2 (a plurality of plate-shaped members) and an additional member M3 (a plurality of plate-shaped members) as welding objects are arranged between the ground electrode 11 and the welding electrode 13 and the opposing member 12 . . In the present embodiment, the welding electrode 13 is in pressure contact with the plate-shaped member M1, and the ground electrode 11 is in pressure-contact with the plate-shaped member M2. In addition, the plate-shaped member M2 and the additional member M3 are sandwiched between the ground electrode 11 and the opposing member 12 . In addition, the object to be welded may be provided with two or more plate-like members M1 and M2, and the additional member M3 may not exist in some cases.

[0079] Furtherm...

Embodiment approach 2

[0119] Hereinafter, other embodiments of the present invention will be described in detail. In addition, in description of these embodiment, the same code|symbol is attached|subjected to the same part as Embodiment 1, and a detailed description is abbreviate|omitted.

[0120] The welding electrode 13 may be configured to be rotatable around the axis L1 of the ground electrode 11 in addition to the movement in the direction of the axis L2. Specifically, for example, as Figure 7 As shown, the welding electrode torch 13b and the welding electrode 13 may be configured to be rotatable around the axis L1 about the axis L1 of the ground electrode torch 11b and the ground electrode 11 .

[0121] According to this configuration, for example, even when the space around the welding target site is limited in the welding target, welding can be performed by arranging the spot positions of the welding electrode 13 and the ground electrode 11 by rotating the welding electrode 13 around the ...

Embodiment

[0127] As an example, in Figure 9 The results in the case of indirect spot welding with the following structure are shown.

[0128] That is, the indirect spot welding apparatus 1 uses the ground electrode 11 having a circular ground electrode tip surface 11a (maximum diameter R1=8mm) and the opposing member 12 having a circular opposing member tip surface 12a (maximum diameter R2=5mm). , A device having a welding electrode 13 having a circular welding electrode tip surface 13a (maximum diameter R3=5mm) and a structure with a distance between the ground electrode 11 and the welding electrode 13, that is, the shortest distance between the axis L1 and the axis L2 45mm . In addition, the welding electrode drive mechanism 3 is an air cylinder mechanism, and the pressing force of the ground electrode 11 is 4.5 kN, and the pressing force of the welding electrode 13 is 1 kN.

[0129] In addition, the object to be welded is used image 3 Welding object of the structure shown. Spec...

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Abstract

The present invention provides an indirect spot welding device and a welding method which contribute to the miniaturization of the device and can improve the efficiency of welding work. The indirect spot welding device (1) is characterized by comprising a welding electrode (13) that is in pressure contact with a surface of a plate-shaped member (M1, M2) that is a welding object on one side in the stacking direction, The surface on one side of the lamination direction of M2) is in pressure contact with the ground electrode (11) at a position offset from the axis (L2) of the welding electrode (13), and the ground electrode (11) is coaxial with the ground electrode (11). The welding electrode (13) is arranged so as to be opposed to the opposing member (12) so as to sandwich at least a part of the plate-shaped member (M1, M2) between the ground electrode (11) and the ground electrode (11) so that the welding electrode (13) can The way of moving in the direction of the axis (L2) parallel to the direction of the center (L1) is mechanically integrated with the ground electrode (11).

Description

technical field [0001] The present invention relates to an indirect spot welding device and a welding method. Background technique [0002] In the past, it has been known that, for example, Figure 10 Direct spot welding as shown: The welding electrode 103 and the ground electrode 101 are coaxially opposed to each other, and the welding target parts of the welding target members M101 and M102 are sandwiched by the two electrodes 101 and 103, as shown in the reference numerals. Welding is performed by energizing as shown in C101. However, indirect spot welding is performed when other members are arranged on one side of the welding target member, when there is a space limitation, or the like. Indirect spot welding is for example Figure 11 In the method shown, the welding electrode 103 and the ground electrode 101 are shifted in position by bringing both electrodes into contact with the welding target members M101 and M102 under pressure, and welding is performed as indicate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K11/11B23K11/31
CPCB23K11/115B23K11/314B23K11/312B23K11/315
Inventor 石崎尚武永寿伴宽柴田明范
Owner MAZDA MOTOR CORP