Cable Foil Stripping with Rotating Cutters for Uniform Removal

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Solution Overview

Problem

Existing methods for removing the outer insulating member and foil from electric wires are labor-intensive and lack uniformity, increasing working time and difficulty.

Innovation Solution

A removal device comprising a fixing member, a foil cutting unit with rotating cutting blades, and a foil stripping unit with a rotating stripping member, which together cut and strip the foil from the electric wire, reducing working time and ensuring uniform removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual labor is used to remove the outer insulating member and foil, then flexibility and adaptability are maintained, but working time increases and uniformity of removal is difficult to achieve

Engineering Contradiction:
Improveworking timeVSAvoidcomplexity of removal device
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The removal device is segmented into distinct functional units: a cutting unit with rotating cutting blades for cutting the foil, and a stripping unit with stripping members for removing the cut foil. This segmentation allows each unit to perform its specific function efficiently, reducing overall working time while maintaining manageable device complexity through modular design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cutting blades are configured to automatically cut the foil as the cable passes through, and the stripping members automatically strip the cut foil without requiring manual intervention. This self-service mechanism eliminates manual labor, significantly reducing working time while the automated process ensures uniform removal across different cables

Inventive Principle:
Principle #25Self-service

2Manufacturing precision

If manual labor is used to remove the outer insulating member and foil, then device complexity is minimized, but uniformity of removal and consistency are difficult to achieve

Engineering Contradiction:
Improveuniformity of foil removalVSAvoidworking time
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The rotating cutting blades and stripping members operate in a controlled sequence, with the cutting unit first cutting the foil and then the stripping unit removing it. This sequential feedback mechanism ensures that each cable receives consistent treatment, achieving uniform removal. The rotational motion provides continuous contact and control, eliminating the variability inherent in manual operations

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The cutting blades and stripping members are designed with specific geometric parameters and rotational speeds that optimize the cutting and stripping process. By controlling these parameters, the device achieves consistent and uniform foil removal across different cables, transforming the variable manual process into a controlled automated operation

Inventive Principle:
Principle #35Parameter changes

3Speed

If a rotating disc-shaped cutter is used to strip coaxial cable, then stripping speed is improved, but the ability to handle different cable types and achieve precise control is reduced

Engineering Contradiction:
Improvestripping speedVSAvoidadaptability to different cable types
Core Design Contradiction:
SpeedVSAdaptability or versatility

Solution Approach 1:

The cutting blades and stripping members are designed to rotate rather than remain fixed, allowing them to adapt to different cable diameters and types. The rotational motion provides dynamic contact that can accommodate variations in cable geometry while maintaining high stripping speed. This dynamic design replaces the rigid disc-shaped cutter with a more versatile rotating mechanism

Inventive Principle:
Principle #15Dynamics

4Manufacturing precision

If cutting blades are fixed in position, then device simplicity is maintained, but the ability to adjust for different cable sizes and achieve precise cutting is limited

Engineering Contradiction:
Improveprecision of cuttingVSAvoidcomplexity of blade positioning
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The cutting blades are made rotatable rather than fixed, allowing them to dynamically adjust to different cable sizes through rotational motion. This dynamic positioning enables precise cutting for various cable types without requiring complex adjustable mechanisms, as the rotation itself provides the necessary adaptation

Inventive Principle:
Principle #15Dynamics

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 device efficiently cuts and strips the outer insulating member and foil, reducing working time and ensuring uniform removal, thereby improving the efficiency and consistency of the process.

Implementation Method 1

a first rotating member (210) rotatably disposed adjacent to the fixing member (100) to be rotated by a connected first rotating shaft (220); a first rotation motor (230) connected to the first rotating shaft (220) to rotate the first rotating shaft (220)

Methodology Applied
Scientific EffectRotational motion:

Implementation Method 2

a second rotating member (310) rotatably disposed inside the first rotating member (210) to be rotated by a connected second rotating shaft (320); a second rotation motor (330) connected to the second rotating shaft (320) to rotate the second rotating shaft (320)

Methodology Applied
Scientific EffectRotational motion:

Data Source

PatentEP3944436B1Removal device of cable foil
Publication Date: 2025.04.09 JEILFA CO LTD
  • EP3944436B1 patent drawingFigure 1
  • EP3944436B1 patent drawingFigure 2
  • EP3944436B1 patent drawingFigure 3

AI summary

A removal device of cable foil includes a fixing member 100 configured to fix an electric wire 10, a foil cutting unit 200 disposed adjacent to the fixing member 100 to cut foil of the electric wire 10 fixed by the fixing member 100, and a foil stripping unit 300 configured to strip the foil of the electric wire 10, which is cut by the foil cutting unit 200, from the electric wire 10. According to the present disclosure, an outer insulating member and foil of an electric wire are cut by a foil cutting unit and the cut foil is stripped by a foil stripping unit, thus reducing working time for removing the foil and enabling the outer insulating member and foil of the electric wire to be uniformly removed.