Masking Jig Adhesion via Temporary Placement Table

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Solution Overview

Problem

Robots face challenges in applying a masking jig to a workpiece with even force due to varying shapes, making it difficult to ensure proper adhesion.

Innovation Solution

A robot system comprising a masking jig holding unit, an object holding unit, an application unit for adhesive application, and a temporary placement table, where the object is positioned to apply adhesive to the masking jig, allowing the object's weight to press the jig onto the workpiece, ensuring even force and accurate adhesion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a robot hand holds a masking jig and attempts to paste it to a workpiece, then the masking jig can be applied to the workpiece, but the robot hand cannot paste the masking jig with an even force due to varying workpiece shapes

Engineering Contradiction:
Improveadhesion evennessVSAvoidworkpiece shape adaptability
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent introduces a temporary placement table as an intermediary device between the robot hand and the workpiece. The masking jig is first pasted to the temporary placement table with even force using a separate pasting mechanism, then the entire temporary placement table with the attached masking jig is transferred to the workpiece. This intermediary table solves the problem of achieving even adhesion force on workpieces of varying shapes.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent divides the pasting operation into two separate stages: first, the masking jig is pasted to the temporary placement table; second, the temporary placement table with the attached masking jig is transferred to and pasted onto the workpiece. This segmentation allows each pasting operation to be optimized independently, ensuring even adhesion force in both stages.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a robot applies adhesive to a workpiece and then attaches a masking jig, then the masking jig can be attached, but it is difficult to ensure the masking jig sticks closely and evenly to the workpiece surface

Engineering Contradiction:
Improveadhesion reliabilityVSAvoidadhesion evenness
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The temporary placement table serves as an intermediary that ensures even adhesion. The masking jig is first attached to this table with controlled, even force. When the temporary placement table is then transferred to the workpiece, the masking jig maintains its even attachment, ensuring reliable and uniform adhesion to the final workpiece surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The masking jig is preliminarily attached to the temporary placement table before the final transfer to the workpiece. This preliminary attachment allows the system to establish even adhesion force in a controlled environment, ensuring that when the masking jig is eventually applied to the workpiece, it will adhere reliably and evenly regardless of the workpiece shape.

Inventive Principle:
Principle #10Preliminary action

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 method enables reliable and even adhesion of the masking jig to the workpiece, reducing working time and improving accuracy by utilizing two robots to coordinate the positioning and application steps.

Implementation Method 1

an application unit that is provided in a predetermined position in a working area of the robot and applies an adhesive

Methodology Applied
Scientific EffectAdhesive: Adhesive

Data Source

PatentUS8871043B2Masking method using masking jig
Publication Date: 2014.10.28 FANUC LTD
  • US8871043B2 patent drawing
  • US8871043B2 patent drawing
  • US8871043B2 patent drawing

AI summary

A masking jig holding unit (31) holds a masking jig, a robot moves the masking jig to place on a temporary placement table, an object holding unit (21) holds an object, the robot moves and positions the object to face an application unit (35b) in a predetermined position and posture, the application unit applies an adhesive to a masking part of the object, the robot directs the masking part of the object downward, and moves the object to the temporary placement table, and the robot brings the object down to the masking jig that is placed on the temporary placement table, and pastes the masking jig to the masking part of the object.