Cyclonic Stripping Blade for Wire Sheath Removal
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Solution Overview
Problem
Existing methods for stripping insulating material from wires often result in incomplete cuts and nicking of the conductive core, as they struggle to control the depth of the cut and minimize contact with the core during the stripping process.
Innovation Solution
A pair of stripping blades with a single, compound cutting edge and an opposing guiding surface, featuring bilateral symmetry and a cyclonic stripping action that creates a 360° circumferential cut, reducing the force required and minimizing material squeeze or tearing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If push cutting blades with flat cutting surfaces and central notches are used, then the conductive core is protected from direct contact, but the cutting edges cannot effectively sever the sheath material and may nick the core when compressed further
Solution Approach 1:
The patent applies curvature by replacing the flat cutting surfaces with rounded cutting surfaces that have a radius of curvature. This rounded geometry allows the cutting edges to effectively sever the sheath material while the curvature naturally limits the depth of cut, preventing the blades from contacting and nicking the conductive core. The rounded surfaces engage the sheath material more effectively than flat surfaces while maintaining controlled penetration depth.
2Object-affected harmful factors
If V-shaped blades with rounded ends are used, then contact with the conductive core is minimized, but the depth of cut into the sheath cannot be effectively controlled
Solution Approach 1:
The patent applies local quality by creating different surface geometries at different locations on the blade. The cutting surfaces have a specific radius of curvature optimized for severing the sheath, while the guiding surfaces have a different radius of curvature that controls the depth of cut. This local differentiation of geometric properties allows the blade to simultaneously achieve effective cutting and precise depth control without contacting the conductive core.
3Reliability
If blades are compressed further to sever squeezed sections of sheath, then complete cutting is achieved, but the conductive core is nicked reducing current carrying capacity
Solution Approach 1:
The rounded cutting surfaces with optimized radius of curvature enable complete severing of the sheath material through controlled compression without risking contact with the conductive core. The curvature geometry ensures that the cutting edges maintain optimal contact with the sheath throughout the cutting process, achieving reliable separation while the rounded profile prevents excessive penetration that would nick the core and reduce its current carrying capacity.
Data Source
AI summary
A blade assembly is provided for use in a wire stripping system, where the blade assembly includes a first blade including a first cutting opening therein, the first opening including a first guide surface on one side of the first opening and a first cutting surface on the opposite side of the first opening, and a second blade including a second cutting opening therein, the second opening including a second guide surface on one side of the second opening and a second cutting surface on the opposite side of the second opening. The blades impart a rotation force on the wire to cause the cutting surfaces to make a depth-controlled circumferential cut in the sheath around the entire wire.