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Indirect spot welding apparatus and welding method

A spot welding device and an indirect technology, applied in welding equipment, resistance welding equipment, manufacturing tools, etc., can solve the problems such as the distance between the ground electrode and the welding electrode becomes longer, it is difficult to improve the efficiency of welding operations, and it is difficult to perform welding operations. To achieve the effect of inhibiting excessive welding, shortening the energization time, and inhibiting deformation

Active Publication Date: 2020-04-03
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 apparatus and welding method
  • Indirect spot welding apparatus and welding method
  • Indirect spot welding apparatus and welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0077]

[0078] Such as Figure 1 ~ Figure 4 As shown, the indirect spot welding device 1 according to Embodiment 1 includes a ground electrode 11 , an opposing member 12 , and a welding electrode 13 . Furthermore, between the ground electrode 11 and the welding electrode 13 and the opposing member 12, two plate-shaped members M1, M2 (plurality of plate-shaped members) and an additional member M3 (plurality of plate-shaped members) are disposed as objects to be welded. . 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 interposed between the ground electrode 11 and the opposing member 12 . In addition, the object to be welded only needs to include two or more plate-shaped members M1 and M2, and the additional member M3 may not exist in some cases.

[0079] In ...

Embodiment approach 2

[0119] Hereinafter, other embodiments of the present invention will be described in detail. In addition, in the description of these embodiments, the same reference numerals are attached to the same parts as those in Embodiment 1, and detailed descriptions are 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 axis L2 direction. Specifically, for example, as Figure 7 As shown, the welding torch 13 b and the welding electrode 13 may be configured to be rotatable around the axis L1 around the axis L1 of the ground electrode torch 11 b and the ground electrode 11 .

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

Embodiment

[0127] As an example, in Figure 9 The middle indicates the results of indirect spot welding with the following configurations.

[0128] That is, the indirect spot welding device 1 uses a ground electrode 11 having a circular ground electrode tip surface 11 a (maximum diameter R1 = 8 mm), and an opposing member 12 having a circular opposing member tip surface 12 a (maximum diameter R2 = 5 mm). A device having a welding electrode 13 having a circular welding electrode tip surface 13a (maximum diameter R3=5mm) and having a structure in which the distance between the ground electrode 11 and the welding electrode 13, that is, the shortest distance between the axis L1 and the axis L2 is 45mm . In addition, the welding electrode driving 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 uses image 3 The object to be welded ...

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Abstract

The invention provides an indirect spot welding apparatus and a welding method which contribute to miniaturization of the apparatus and can improve the efficiency of welding operations. An indirect spot welding apparatus includes a welding electrode that is brought into pressure contact with one of surfaces of a plurality of plate-shaped members that are objects to be welded in one side in a stacking direction of the plate-shaped members, a ground electrode that is brought into pressure contact with the one of the surfaces in the one side or another one of the surfaces in the other side in thestacking direction in a position shifted from an axial center of the welding electrode, and an opposed member disposed coaxially with the ground electrode to be opposed to the ground electrode so asto hold at least one of the plate-shaped members between the opposed member and the ground electrode, and the welding electrode is mechanically integrated with the ground electrode to be movable in adirection parallel to an axial direction of the ground electrode.

Description

technical field [0001] The invention relates to an indirect spot welding device and a welding method. Background technique [0002] In the past, it was known that for example Figure 10 Direct spot welding as shown: The welding electrode 103 and the ground electrode 101 are arranged oppositely on the same axis, and the welding target parts of the welding target parts M101 and M102 are sandwiched between the two electrodes 101 and 103, as shown in the reference numerals. Apply electricity as shown in C101 to perform welding. However, indirect spot welding is performed when another member is arranged on one side of the member to be welded or when there is a space limitation. Indirect spot welding such as Figure 11 In the method shown, the welding electrode 103 and the ground electrode 101 are pressed into contact with the welding target members M101 and M102 while the positions of the welding electrode 103 and the ground electrode 101 are shifted, and welding is carried out...

Claims

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Application Information

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Patent Type & Authority Applications(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