Sliding Roller Welding Gun for Side and Sandwich Welding

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Solution Overview

Problem

Existing welding machines face limitations in efficiently welding workpieces of varying shapes due to fixed electrode positions, requiring complex mechanisms and restricted access, making it difficult to switch between sandwiching and side-welding modes without rotating the machine or compromising on space.

Innovation Solution

A welding gun with movable arms and rotatable roller-shaped electrodes, equipped with a slide mechanism that allows the first electrode to move below the second, enabling both side-contact and sandwich-welding modes without the need for machine rotation, accommodating different workpiece shapes and spaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If fixed electrode positions are used in welding machines, then the structure is simple, but the ability to weld workpieces of varying shapes is limited

Engineering Contradiction:
Improveability to weld workpieces of varying shapesVSAvoidstructure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The welding electrodes are made movable rather than fixed. The first welding electrode can move in the vertical direction and the second welding electrode can move in the horizontal direction, allowing the electrode positions to be dynamically adjusted according to different workpiece shapes and welding requirements

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The welding machine is divided into independent movable components (first welding electrode on vertical slide, second welding electrode on horizontal slide) that can be controlled separately, enabling flexible positioning and configuration for different welding modes

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If complex mechanisms are used to achieve multiple welding modes, then welding versatility is improved, but the device complexity increases

Engineering Contradiction:
Improvewelding mode switching capabilityVSAvoidmechanism complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The welding machine is designed to perform multiple welding modes (sandwich welding and side welding) using a unified structure with movable electrodes. The same electrode assembly can switch between different welding configurations without requiring separate dedicated mechanisms for each mode

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The vertical slide mechanism and horizontal slide mechanism are integrated into a single welding gun assembly, combining multiple positioning functions into one unified structure that can achieve both vertical and horizontal electrode arrangements

Inventive Principle:
Principle #5Merging (Combining)

3Ease of operation

If the welding machine is rotated to access different workpiece areas, then welding accessibility is improved, but the operation complexity and time increase

Engineering Contradiction:
Improveworkpiece accessibilityVSAvoidtime for mode switching
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

Instead of rotating the entire machine, the electrode positions are dynamically adjusted through slide mechanisms. The first electrode moves vertically and the second electrode moves horizontally, allowing rapid reconfiguration of the welding configuration without time-consuming machine rotation

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The electrode positions are pre-configured to enable quick switching between welding modes. The movable electrode design allows the system to be preliminarily set up in different positions, enabling fast transition between sandwich and side welding modes based on workpiece requirements

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12128495B2Welding gun and welding method
Publication Date: 2024.10.29 SUBARU CORP
  • US12128495B2 patent drawing
  • US12128495B2 patent drawing
  • US12128495B2 patent drawing

AI summary

A welding gun includes first and second movable arms, and first and second welding electrodes. The first and second movable arms are movable upward and downward. The first and second welding electrode are disposed respectively on the first and second movable arms. The welding gun is capable of performing a first mode in which the first and second welding electrodes are brought into contact with one side of a workpiece to weld the workpiece, and a second mode in which the workpiece is sandwiched by the first and second welding electrodes to weld the workpiece. The first and second welding electrodes are pivotally supported by the first and second movable arms, respectively. Each of the first and second welding electrodes has a rotatable roller shape. The first movable arm includes a first slide mechanism configured to allow the first welding electrodes to slide to below the second welding electrode.