Spring-Assisted Cap Changing for High-Force Electrode Cap Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cap changing systems for welding electrode shafts face limitations in achieving higher force without increasing the size or system pressure of the linear drive, which is necessary for efficient cap removal.
Innovation Solution
A combination of a linear drive with a spring for one-sided force amplification, allowing the use of a double-acting system to enhance the force without altering the linear drive's dimensions or system pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the piston diameter is increased to achieve higher force on the piston rod, then the force increases, but the size of the linear drive increases
Solution Approach 1:
The patent combines a spring mechanism with the linear drive system to merge two force-generating elements. The spring is positioned to act on the piston rod, adding its force to the pneumatic/hydraulic force, thereby achieving higher total force without increasing the piston diameter or linear drive size.
Solution Approach 2:
The patent changes the force output parameter by introducing a spring with specific mechanical properties (spring constant, preload). This allows the system to achieve variable force amplification depending on the spring's compression state, enabling higher force output from the same-sized linear drive.
2Force
If the system pressure in the supply unit is increased to achieve higher force on the piston rod, then the force increases, but the system pressure requirements increase
Solution Approach 1:
The spring mechanism is merged with the pressurized fluid system to provide an additional force component. This allows the system to achieve higher total force at lower fluid pressures, as the spring contributes part of the required force, reducing the burden on the pressure supply unit.
3Force
If a spring is added to the linear drive for force amplification, then the force increases, but the device complexity increases
Solution Approach 1:
The spring is nested within the existing linear drive structure, specifically positioned to act on the piston rod without requiring a completely separate external mechanism. This integration minimizes the additional space and structural elements needed, reducing the overall complexity increase.
Solution Approach 2:
The spring is pre-loaded and automatically engages with the piston rod to provide force amplification without requiring external control or adjustment mechanisms. The spring's own mechanical properties (elasticity, preload) enable it to self-regulate the force contribution, reducing control system complexity.
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 solution achieves a significant increase in force, up to 78% higher than the nominal force of the linear drive, enabling effective cap removal with reduced size and pressure requirements.
Implementation Method 1
a combination of linear drive (pneumatic/hydraulic) with a spring for the purpose of a one-sided force amplification exceeding the pure linear drive nominal force
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a double-acting linear drive, consisting of a combination of a linear drive (mechanic/pneumatic/hydraulic) with a spring for the purpose of boosting the force of the linear drive on one end beyond the pure nominal force of the linear drive.