Connecting Rod Cutter Drive to Eliminate Metal Particle Friction
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Solution Overview
Problem
The existing electrode sheet cutting apparatus in lithium battery manufacturing generates metal particles due to friction between sliding surfaces during the follow-cutting process, leading to safety hazards such as internal short circuits and thermal runaway.
Innovation Solution
A cutter driving apparatus with a connecting rod assembly that replaces the sliding rail and sliding block structure, allowing for horizontal and vertical reciprocating movements without direct contact, thereby eliminating friction and reducing the generation of metal particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sliding rail and sliding block structure is used in the follow-cutting mechanism, then the cutter can follow the material feeding direction, but metal particles are generated due to friction between contact surfaces
Solution Approach 1:
The patent replaces the traditional sliding rail and sliding block mechanical structure with a parallel mechanism consisting of connecting rods and hinge joints. This substitution eliminates direct sliding contact between metal surfaces, thereby preventing metal particle generation while maintaining the cutter's ability to follow the material feeding direction efficiently
2Ease of operation
If sliding rail and sliding block are used for cutter drive, then vertical reciprocating motion is achieved, but friction force generates safety hazards
Solution Approach 1:
The patent segments the motion transmission function into multiple connecting rods (first connecting rod, second connecting rod, third connecting rod) connected by hinge joints. This segmentation distributes the motion transmission across multiple non-contacting components, eliminating friction-induced safety hazards while achieving the required vertical reciprocating motion
3Object-generated harmful factors
If connecting rod assembly is used to replace sliding structure, then metal particle generation is eliminated, but device complexity increases
Solution Approach 1:
The patent merges the motion transmission functions into an integrated parallel mechanism where multiple connecting rods work together through hinge joints. This unified structure achieves metal particle elimination while managing complexity through functional integration rather than separate components
Data Source
AI summary
A cutter driving apparatus configured to drive a cutter of a cutting device includes a following drive assembly, a cutting drive assembly, a cutter drive rod connected to the following drive assembly, and a connecting rod assembly having a first connecting end connected to the cutting drive assembly and a second connecting end connected to the cutter drive rod.