Cable Coating Removal Device Using Twist-Cut and Partial Incision
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Solution Overview
Problem
Existing methods for removing coatings from cable core wires often result in scratches or partial cutting of the core wire due to difficulties in setting accurate incision depth and the non-clean concentric cross-section of electric wires.
Innovation Solution
A coating removal method and device that utilize an urging mechanism for precise cutting, a rotation mechanism for twist-cutting, and a gripping mechanism to pull out the coating without reaching the core wire, ensuring a clean and scratch-free exposure of the core wire.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting edge is advanced deeper to remove the coating more effectively, then the coating removal efficiency is improved, but the core wire may be scratched or cut off
Solution Approach 1:
The cutting blade is designed to make only a partial incision into the coating without penetrating through to the core wire. The incision depth is controlled to be exactly sufficient to initiate the peeling process while stopping before damaging the core wire, applying just the right amount of action needed without excess
Solution Approach 2:
The cutting blade first makes an incision in the coating before the peeling action begins. This preliminary incision creates a starting point for the peeling process, allowing the coating to be removed in a controlled manner without requiring deep cutting that would risk damaging the core wire
2Object-affected harmful factors
If the incision depth is set precisely to avoid the core wire, then the core wire protection is improved, but the device complexity increases due to depth control mechanisms
Solution Approach 1:
The device structure itself provides the depth control function through its geometric design. The cutting blade is positioned and oriented such that its cutting path naturally limits the incision depth to a safe level before the core wire is reached, eliminating the need for additional active depth control mechanisms
Solution Approach 2:
The design changes the approach from actively controlling depth parameters through complex mechanisms to using fixed geometric parameters of the device structure. The blade angle, position, and movement path are designed to inherently limit incision depth, transforming depth control from a dynamic parameter into a static geometric constraint
3Productivity
If the cutting blade is designed to cut through the coating completely, then the coating removal speed is improved, but the risk of core wire damage increases
Solution Approach 1:
The coating removal process is divided into two distinct stages: first, the cutting blade makes a partial incision to create a starting point, and second, a peeling action removes the remaining coating. This segmentation allows each stage to be optimized independently - the cutting stage is gentle and controlled, while the peeling stage provides the bulk of the removal speed without risking core wire damage
Data Source
AI summary
There is provided a coating moving method for a cable that removes a coating at a terminal portion of a cable, including a step of applying a pressing force having such a magnitude that a cutting edge stops at a position before reaching the core wire to the cutting blade to make an incision on the coating by the cutting blade, a step of twist-cutting an uncut portion of the coating between the cutting edge of the cutting blade and the outer periphery of the core wire by rotating the coating on a distal end side from an incision position with respect to the coating on a base end side, and a step of removing the coating on the distal end side from the incision position by gripping and pulling out the coating on the distal end side from the incision position to expose the core wire.