Adhesive Tape Joining for Thin Strip Sheets
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Solution Overview
Problem
Existing progressive processing methods for thin strip-shaped sheets result in reduced tensile strength and unstable welding quality due to the application of welding techniques suited for thick sheets, leading to issues with ensuring the strength and stability of the processed sheets.
Innovation Solution
A method involving a progressive processing apparatus that uses an adhesive tape to join thin strip-shaped steel sheets, forming inclined cut surfaces and applying the tape along these surfaces to enhance bonding and prevent peeling, allowing for improved feeding and pressing of the sheets without straining, and utilizing a non-magnetic adhesive tape to prevent contamination and facilitate easy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding is applied to thin strip-shaped sheets, then joining is achieved, but tensile strength is reduced and straining occurs resulting in unstable welding quality
Solution Approach 1:
An adhesive tape is introduced as an intermediary substance to join the thin strip-shaped sheets instead of direct welding. The tape is applied to the cut surfaces and protrudes outward to provide a bonding interface that does not damage the thin material, thereby maintaining tensile strength while achieving reliable joining.
Solution Approach 2:
The joining method is changed from welding (thermal/mechanical process) to adhesive bonding (chemical process). This parameter change in the joining mechanism avoids the straining and strength reduction associated with welding on thin sheets, while still achieving stable and reliable joining quality.
2Ease of manufacture
If welding is used for joining, then connection is achieved, but the method is unsuitable for thin sheets leading to reduced strength
Solution Approach 1:
The adhesive tape serves as a mediator between the two strip-shaped sheets, providing a joining method that is easy to manufacture and implement. The tape application process is simpler than welding setup and execution, while simultaneously ensuring adequate joint strength for thin sheets.
3Productivity
If strip-shaped sheets are fed continuously, then productivity is improved, but joining stability becomes problematic with conventional methods
Solution Approach 1:
The adhesive tape provides a stable joining mechanism that enables continuous feeding of strip-shaped sheets. The tape's bonding capability maintains joining stability during the feeding process, allowing for improved productivity without sacrificing reliability.
4Reliability
If welding is applied to ensure joining, then connection is achieved, but thin sheets experience straining and strength reduction
Solution Approach 1:
The adhesive tape as an intermediary joining method improves ease of operation by eliminating the straining and handling difficulties associated with welding thin sheets. The tape application and removal process is gentler on the material, making sheet handling easier while maintaining joining reliability.
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 method enhances the tensile strength and stability of the sheets, reduces material waste and setup time, and ensures smooth transfer, while maintaining the quality of the stator and rotor cores by preventing magnetic contamination and ensuring precise tape application.
Implementation Method 1
a tape application step of applying a tape (41) over one end of the remaining strip-shaped sheet (11) located in a direction opposite the direction in which the strip-shaped sheet is fed and one end of the new strip-shaped sheet (11) located in a direction in which the new strip-shaped sheet is fed
Data Source
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AI summary
A method of progressive processing includes a feeding step of feeding a strip-shaped sheet to a press machine; a pressing step of pressing the strip-shaped sheet with the press machine; and a joining step of joining the strip-shaped sheet with a new strip-shaped sheet by applying a tape over an end of the strip-shaped sheet located in a direction opposite a direction in which the strip-shaped sheet is fed and an end of the new strip-shaped sheet located in a direction in which the new strip-shaped sheet is fed.