Spot Welding Apparatus with Interchangeable X and C Type Guns
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Solution Overview
Problem
Conventional spot welding operations require multiple robots and welding guns of different shapes, leading to increased time, costs, and space occupancy, as each robot can only weld one spot at a time, reducing productivity and efficiency.
Innovation Solution
A versatile spot welding apparatus with an upper and lower moving unit, featuring interchangeable X-type and C-type welding tips, and a rotating unit, allowing for automatic tip selection and adaptation to various welding spots, enabling rapid welding in limited space and reducing the number of robots needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple robots with different welding guns are used for different welding spots, then welding coverage and adaptability are improved, but the number of devices and facility costs increase
Solution Approach 1:
The patent implements a single robot arm that can perform multiple welding operations by equipping it with interchangeable welding guns (X-type and C-type). The robot controller manages the switching between different welding guns and coordinates their operations, allowing one robot to replace multiple specialized robots while maintaining adaptability to various welding spots and vehicle models
Solution Approach 2:
The system employs dynamic configuration where the robot arm can switch between different welding guns based on the specific welding task requirements. The controller dynamically adjusts the robot's movement parameters, welding parameters, and gun selection to adapt to different welding spots, achieving versatility without requiring multiple fixed robots
2Manufacturing precision
If multiple specialized welding guns are installed for different positions, then welding precision for specific spots is improved, but space occupancy and facility costs increase
Solution Approach 1:
The system uses a dynamic welding gun selection mechanism where the robot arm switches between X-type and C-type welding guns based on the specific welding task. This allows the system to maintain high welding precision for different spot types without requiring multiple permanently installed specialized guns, thereby reducing space occupancy
Solution Approach 2:
The welding system is segmented into modular components including the robot arm, interchangeable welding guns (X-type and C-type), and a controller. This segmentation allows the system to use a single robot with interchangeable guns rather than multiple fixed specialized systems, reducing overall space requirements while maintaining precision for different welding spots
3Device complexity
If one robot arm performs all welding operations sequentially, then device complexity is reduced, but welding time and productivity decrease
Solution Approach 1:
The patent merges the functions of multiple welding guns (X-type and C-type) into a single robot arm system. The controller coordinates the operation of both welding guns, allowing them to work in sequence or parallel on different welding spots, thereby maintaining reduced device complexity while improving overall welding productivity
Solution Approach 2:
The system implements continuous welding operations by seamlessly switching between X-type and C-type welding guns without interrupting the overall welding process. The controller manages the transition between different guns and welding spots to minimize idle time, ensuring continuous productive action while using a single robot arm
4Adaptability or versatility
If multiple robots are deployed to handle special-shaped welding guns, then welding coverage is improved, but energy consumption and maintenance costs increase
Solution Approach 1:
The patent implements a universal robot arm system that can handle both X-type and C-type welding guns through a single coordinated controller. This multi-functional approach allows one robot to perform all welding operations that would otherwise require multiple specialized robots, significantly reducing energy consumption while maintaining comprehensive welding coverage
Solution Approach 2:
The system merges the operational capabilities of multiple specialized robots into a single robot arm that can switch between different welding guns. The controller integrates the management of both X-type and C-type guns, allowing the system to achieve the same welding coverage with reduced energy consumption by operating one robot instead of multiple robots
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enables rapid and flexible welding operations across multiple vehicle models, improving productivity, efficiency, and reducing facility costs by allowing a single apparatus to perform multiple welding tasks in a limited space.
Implementation Method 1
a screw shaft installed in the body and rotated by actuation of the driving motor, and a slider provided to move vertically on the screw shaft
Implementation Method 2
The spot resistance welding is a process in which contacting metal surfaces are joined by the heat obtained from resistance to electric current
Implementation Method 3
spot resistance welding through a spot welding apparatus is frequently used as a method for bonding two vehicle body panels
Data Source
AI summary
A spot welding apparatus according to is provided that includes an upper and lower moving unit, an upper welding gun, a left and right moving unit and a lower welding gun. In particular, the upper and lower moving unit includes a slide block that is provided at one side of an arm of a robot to move vertically by actuation of an actuator. The upper welding gun is mounted on the slide block and the left and right moving unit is installed at one side of the upper welding gun to horizontally move the upper welding gun by actuation of the actuator. Additionally, the lower welding gun is mounted to correspond to a lower side of the upper welding gun.