Welding equipment

The welding apparatus addresses pressure inconsistencies by using a rotating mechanism and a back-supporting member to balance electrode forces, enhancing welding quality and consistency.

JP7864253B1Active Publication Date: 2026-05-22MITSUBISHI MOTORS CORP +1
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Patent Information

Application Number
JP2025510297
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-09-02
Publication Date
2026-05-22
Estimated Expiration
2044-09-02

AI Technical Summary

Technical Problem

Conventional resistance welding apparatuses face issues with inconsistent pressure application due to cantilevered support, leading to decreased welding quality as one electrode is not adequately supported, resulting in uneven pressure distribution.

Method used

A welding apparatus with a rotating mechanism that adjusts the relative positions of two electrodes and includes a support member abutting the workpiece's back surface at the perpendicular bisector, ensuring balanced pressure application through a control unit managing the actuators to maintain equal pressing forces.

Benefits of technology

Ensures consistent and high-quality welding by maintaining equal pressure distribution across the workpiece, preventing uneven heating and improving overall welding integrity.

✦ Generated by Eureka AI based on patent content.

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Abstract

A welding apparatus (1) used for welding a workpiece (W) comprises a rotating mechanism (4), a first electrode (1E), a second electrode (2E), and a support member (5). The rotating mechanism (4) rotates the first member (41) and the second member (42) in directions perpendicular to the predetermined direction, in opposite directions and at the same speed, by rotational power input to a rotating shaft (4R) extending along a predetermined direction. The first electrode (1E) extends in a predetermined direction along the rotating shaft (4R) of the rotating mechanism (4), is fixed to the first member (41), and can freely contact the surface (W1) of the workpiece (W). The second electrode (2E) extends in the above predetermined direction, is fixed to the second member (42), and can freely contact the surface (W1) of the workpiece (W). The support member (5) is able to abut against the back surface (W2) of the workpiece (W) at at least one point on the perpendicular bisector (P) of the line segment (S) connecting the first electrode (1E) and the second electrode (2E) when viewed from a predetermined direction.
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Citation Information

Patent Citations

  • Fixed resistance welding machine for welding oil pan

    CN115007986A

  • Resistance welding method

    JP1987212077A

  • JP1991091187U

  • Resistance welding equipment for one side welding

    JP2007083301A

  • Spot welding apparatus

    JP2012135775A