Cam-Driven Winding Mandrel for Adjustable Cell Circumference
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Solution Overview
Problem
Conventional winding mandrel mechanisms for battery cell manufacturing require complex structures with multiple sets of driving and transmitting structures to adjust the circumference, making them cumbersome and inefficient for producing cells of different types.
Innovation Solution
A simplified winding mandrel mechanism with a driving rod that moves axially, utilizing cam structures and elastic members to adjust the circumference by moving outer and inner pins radially, allowing for seamless clamping and unwinding of materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sets of driving and transmitting structures are used to adjust the circumference of the winding mandrel mechanism, then the adaptability to produce cells of different types is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple driving and transmitting structures into a single integrated cam mechanism. The cam structure directly converts axial movement of the driving rod into radial movement of the winding pin, eliminating the need for separate driving and transmitting components. This merging approach maintains the ability to adjust circumference for different cell types while significantly simplifying the overall structure.
Solution Approach 2:
The cam structure serves as an intermediary element that mediates between the axial movement of the driving rod and the radial movement of the winding pin. By introducing this cam intermediary, the patent achieves efficient circumference adjustment without requiring complex direct transmission mechanisms, thus reducing device complexity while maintaining adaptability.
2Adaptability or versatility
If multiple sets of driving and transmitting structures are used to change the circumference, then the adaptability is improved, but the ease of operation deteriorates due to cumbersome adjustment mechanisms
Solution Approach 1:
By merging the driving and transmitting functions into a single cam mechanism, the patent reduces the number of components that need to be operated. The operator only needs to move the driving rod axially, and the cam automatically converts this motion into the required radial adjustment of the winding pin, greatly simplifying the operation compared to manipulating multiple separate mechanisms.
Solution Approach 2:
The cam structure enables self-service operation where the axial movement of the driving rod automatically generates the radial movement of the winding pin through the cam's geometric profile. This self-converting mechanism eliminates the need for complex multi-step adjustment procedures, making the circumference change operation simple and intuitive.
3Reliability
If conventional driving and transmitting structures are used, then the reliability of material clamping is maintained, but the device complexity increases
Solution Approach 1:
The patent merges the driving and transmitting structures into a single cam mechanism that directly controls the winding pin's radial position. This integrated cam structure maintains reliable material clamping by precisely controlling the pin's movement while eliminating the complexity of multiple separate driving and transmitting components working together.
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 mechanism simplifies the structure and enhances the flexibility to produce cells of varying sizes by adjusting the circumference efficiently, reducing complexity and improving production efficiency.
Implementation Method 1
each of the two half winding pin assemblies further includes a first elastic member for providing an elastic force to the outer pin, the outer pin is driven by the first elastic member to move close to the axis of the winding mandrel mechanism along the radial direction of the winding mandrel mechanism
Implementation Method 2
a second elastic member is sandwiched between the pressing block and the inner clip, and the second elastic member drives the inner clip to move away from the axis of the winding mandrel mechanism along the radial direction of the winding mandrel mechanism
Data Source
AI summary
A winding mandrel mechanism and a winding machine are provided. The winding mandrel mechanism includes a winding pin holder, two half winding pin assemblies, and a driving rod. Each half winding assembly includes an outer pin and an inner clip mounted to the winding pin holder and movable along a radial direction of the winding mandrel mechanism. The driving rod is advanced axially, and inner clips are driven by second cam structures to move radially until clamping material to be wound. The winding mandrel mechanism is rotated to wind the clamped material around outer periphery of the winding mandrel mechanism. To adjust a circumference of the winding mandrel mechanism, the driving rod is advanced continuously along the axial direction of the winding mandrel mechanism, and outer pins are driven to move radially away by first cam structures, thereby increasing the circumference of the outer pins.