Orthodontic Wire Guide Plate Structure to Prevent Z-Axis Bending

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Solution Overview

Problem

Existing wire processing apparatuses fail to adequately prevent z-axis bending of orthodontic wires due to exposed spaces that allow unintended bending, compromising quality and efficiency.

Innovation Solution

The apparatus incorporates a pair of guide plates spaced apart in the z-axis direction with a bracket and bush configuration, minimizing wire exposure by constraining the wire within a slit and using an eccentrically located pin to bend the wire along the x-axis and y-axis planes, reducing z-axis bending.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a conventional wire bending apparatus is used with exposed wire space, then the apparatus structure is simple and easy to manufacture, but z-axis bending cannot be prevented and manufacturing precision deteriorates

Engineering Contradiction:
Improvebending precisionVSAvoidapparatus structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The wire path is divided into multiple constrained segments: the wire passes through a bush, then through a slit in the bracket, and finally through a slit in the guide plate. Each segment provides localized constraint in the z-axis direction, preventing unwanted bending while maintaining overall structural simplicity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Guide plates and slits are introduced as intermediary structures between the wire feeding device and the bending pin. These intermediaries constrain the wire's movement in the z-axis direction without interfering with the bending operation, solving the precision problem while adding minimal structural complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If wire exposure is minimized by constraining wire within guide plates and bracket, then z-axis bending is prevented, but device complexity increases

Engineering Contradiction:
Improvebending precisionVSAvoidconstraint structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The guide plates are integrated with the bracket structure, and the slits are formed directly in these components rather than being separate parts. This merging of functions reduces the number of discrete components while maintaining the wire constraint capability, thus limiting the increase in device complexity

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The guide plates serve multiple functions: they constrain the wire in the z-axis direction, guide the wire through the bending zone, and provide structural support for the bending pin assembly. This multi-functionality reduces the need for additional specialized components

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

Data Source

PatentEP4268762B1Wire processing apparatus preventing z-axis bending
Publication Date: 2026.01.28 YOAT CO LTD
  • EP4268762B1 patent drawingFigure 1~2
  • EP4268762B1 patent drawingFigure 3~4
  • EP4268762B1 patent drawingFigure 5

AI summary

The present disclosure relates to an apparatus for processing wire which prevents the z-axis bending of the wire, and more particularly, to an apparatus for processing wire which is capable of further maximizing the effect of preventing the z-axis bending of the wire by minimizing wire exposure out of the apparatus.