Welding Gun Holding Structure With Movable Collar Clamping
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Solution Overview
Problem
Existing welding guns face challenges in maintaining a firm hold on the held portion of the arm due to insufficient pressing force and potential stress between components, leading to reduced durability and holding force.
Innovation Solution
The welding gun incorporates a holding portion with a first and second facing portion, a connection portion, and a tightening mechanism, where the held portion is sandwiched between the second facing portion and a movable collar, allowing for parallel contact and increased frictional force, thereby enhancing the holding force and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the held portion is sandwiched and held between the pair of facing portions with a pin applying force, then the holding structure is simple, but the pressing force on the held portion is insufficient and the holding force cannot be sufficiently increased
Solution Approach 1:
The invention replaces the static pin structure with a dynamic collar that can move along the pin in the axial direction. This dynamic element allows the collar to be pressed against the held portion with sufficient force while maintaining the simplicity of the overall holding structure. The collar's mobility enables it to effectively transmit and distribute the pressing force.
Solution Approach 2:
The collar acts as an intermediary element between the pin and the held portion. Instead of the pin directly contacting the held portion, the collar mediates the force transmission, allowing for better force distribution and increased pressing force on the held portion while maintaining structural simplicity.
2Stability of the object's composition
If the connection portion maintains a constant facing distance between the pair of facing portions, then the structure is stable, but stress occurs between the connection portion and the pin side, reducing durability
Solution Approach 1:
The invention introduces a dynamic collar that can move axially along the pin, which absorbs and distributes the stress that would otherwise concentrate between the connection portion and the pin side. This dynamic element maintains the stability of the facing distance while improving the durability by preventing stress concentration.
Solution Approach 2:
The collar serves as a cushioning element that is positioned beforehand between the connection portion and the held portion. It absorbs and distributes the stress that occurs during operation, preventing direct stress concentration and improving the overall durability of the holding structure while maintaining structural stability.
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
This configuration increases the holding force and improves the durability of the holding portion by preventing stress between components, ensuring a firm fixation of the held portion and reducing positional displacement of the resistance welding electrodes.
Implementation Method 1
the held portion is pressed toward the inner side surface of the second facing portion... the inner side surface of the second facing portion and the held portion can be brought into contact with each other substantially in parallel to each other, so as to generate a satisfactory friction force therebetween
Data Source
AI summary
A holding part of a welding gun holds a held part that is provided to an arm having resistance welding electrodes. A first facing part and second facing part of the holding part face each other with the held part therebetween, so as to form a layered part. A connecting part fixes the relative positions of the first facing part and the second facing part. A collar is inserted into a through hole of the first facing part so as to be movable in the layering direction. When a pressing mechanism presses the second facing part, the held part, and the collar in the layering direction, the held part is sandwiched between the second facing part and the collar.