Peeling Device for Conductor Wire Burr Control

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Solution Overview

Problem

The formation of burrs on conductor wires during cutting with a peeling die in existing peeling devices increases apparatus size and cost, as separate devices are required for peeling and thickness reduction.

Innovation Solution

A peeling device with a first peeling die that peels off the insulating coating and cuts the conductor wire, forming a recessed portion, and a cradle with a receiving section to prevent burr formation, using a second peeling die that cuts the conductor wire while receiving the recessed portion, which is preferably trapezoidal in shape to match the cutting section.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a thickness-reduced portion is formed by partly cutting a conductor wire using a peeling die, then the apparatus size and cost are reduced, but a burr appears in the conductor wire along the movement direction of the peeling die

Engineering Contradiction:
Improveapparatus size and costVSAvoidburr formation
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The peeling die is divided into two distinct sections: a first peeling die for peeling the insulating coating, and a second peeling die for cutting the conductor wire. This segmentation allows each section to perform its specific function optimally without interfering with the other, preventing burr formation while maintaining a compact single-apparatus design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A recessed portion is formed in the conductor wire at the position where the insulating coating is peeled off. This recessed portion acts as an intermediary structure that receives and guides the conductor wire during the cutting process, ensuring clean cuts without burrs while using the same peeling die for both functions.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If a separate rolling device is used to form thickness-reduced portions, then manufacturing precision is improved, but apparatus size and cost increase

Engineering Contradiction:
Improvethickness-reduced portion formationVSAvoidapparatus size and cost
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The peeling die is designed to perform multiple functions: it both peels off the insulating coating and forms the thickness-reduced portion by cutting the conductor wire. This multi-functionality eliminates the need for a separate rolling device, reducing apparatus size and cost while maintaining manufacturing precision through the carefully designed recessed portion geometry.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Device complexity

If the conductor wire is cut using the peeling die without a receiving section, then the device complexity is reduced, but burr formation occurs affecting fusion joining quality

Engineering Contradiction:
Improvedevice structureVSAvoidfusion joining quality
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The recessed portion formed in the conductor wire serves as an intermediary structure that receives the conductor wire during cutting. This recessed portion, combined with the receiving section, ensures stable positioning and support during the cutting process, preventing burr formation and ensuring high-quality fusion joining without significantly increasing device complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS10958048B2Peeling device and method
Publication Date: 2021.03.23 HONDA MOTOR CO LTD
  • US10958048B2 patent drawing
  • US10958048B2 patent drawing
  • US10958048B2 patent drawing

AI summary

A peeling device (12) includes a first peeling unit (21) and a second peeling unit (22). When an upper peeling die (33) and a lower peeling die (34) of the first peeling unit (21) are moved forward, an insulating coating (8) is peeled off from upper and lower surface of a coil conductor wire (2), and a conductive portion (7) is cut from the upper surface and the lower surface of the coil conductor wire (2). The conductive portion (7) is formed to have exposed portions (7a) and recessed portions (7b) cut in a trapezoidal shape. A front peeling die (42) and a rear peeling die (43) of the second peeling unit (22) are moved downward while the recessed portion (7b) is placed on and pressed against a second receiving section (41b) of a cradle (41), which peels off the insulating coating (8) and cuts the conductive portion (7).