Vibratory Roller Removal Device for Protrusion-Groove Disassembly

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Solution Overview

Problem

Disassembly of assembled products attached via protrusions and grooves is time-consuming.

Innovation Solution

A removal device comprising a rotatable first roller supported by a shaft, a base that moves the shaft, and optionally a second roller and connecting plate to apply a pressing force in a direction intersecting the axis, facilitating the detachment of parts from a main body.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If parts are attached to main body by engagement between protrusions and grooves, then assembly is simple and reliable, but disassembly becomes time-consuming

Engineering Contradiction:
Improveassembly reliabilityVSAvoiddisassembly time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies vibratory motion to the removal device, causing the roller to vibrate against the engaged parts. This vibration generates impact forces that break the engagement between protrusions and grooves, enabling rapid disassembly without manual manipulation of each component.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The removal device employs periodic vibratory motion through the roller, creating repeated impact cycles on the engaged parts. This periodic action accumulates sufficient force to overcome the engagement resistance of multiple parts simultaneously, significantly reducing disassembly time compared to static removal methods.

Inventive Principle:
Principle #19Periodic action

2Ease of operation

If multiple parts are removed sequentially by manual manipulation, then each part can be inspected, but the overall removal process becomes time-consuming

Engineering Contradiction:
Improveinspection capabilityVSAvoidremoval speed
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The removal device segments the removal process by using a roller that contacts multiple parts simultaneously along its surface. Different portions of the roller apply force to different parts, enabling parallel removal of multiple components while maintaining the ability to inspect removed parts individually.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent merges the removal function for multiple parts into a single roller component. This consolidation allows simultaneous engagement with and removal of multiple parts through one unified mechanism, dramatically increasing productivity while the sequential ejection of removed parts preserves inspection capability.

Inventive Principle:
Principle #5Merging (Combining)

3Force

If a pressing force is applied to remove parts, then detachment is achieved, but deformable parts may be damaged

Engineering Contradiction:
Improvepressing forceVSAvoidpart deformation
Core Design Contradiction:
ForceVSObject-affected harmful factors

Solution Approach 1:

The vibratory motion of the roller delivers impact forces that are concentrated in time but distributed in effect. The vibration creates micro-movements and reduces friction between engaged surfaces, allowing parts to be loosened and removed with less overall pressing force, thereby preventing deformation of delicate components.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The patent changes the temporal characteristics of the applied force by using vibratory motion instead of static pressing. This parameter change transforms a continuous force application into pulsed impact forces, which are more effective at breaking engagement without causing cumulative deformation of deformable parts.

Inventive Principle:
Principle #35Parameter changes

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

Reduces the time required to remove parts from a main body by applying a sequential pressing force, while minimizing contact with deformable parts and maintaining part attitude.

Implementation Method 1

a roller (1) that is rotatable about an axis (X1) and that comes into contact with an assembled product (50)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4684918A1Removal device and method for removing component from body
Publication Date: 2026.01.28 IHI CORP
  • EP4684918A1 patent drawingFigure 1
  • EP4684918A1 patent drawingFigure 2
  • EP4684918A1 patent drawingFigure 3

AI summary

A removal device 100 includes a first roller 1 that is rotatable about a first axis X1 and that comes into contact with an assembled product 50, a first shaft 2 that rotatably supports the first roller 1 about the first axis X1, and a base 4 that moves the first shaft 2 in a direction intersecting the first axis X1.