Joining jig and joining apparatus

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Solution Overview

Problem

The existing methods for joining sheet-shaped materials, particularly when the end edge portion is curved or composed of multiple connected straight lines, are complicated and labor-intensive, leading to a significant workload.

Innovation Solution

A joining jig and apparatus that includes a placement base with a shaped surface matching the end edge portion of the sheet-shaped material and a plurality of attachment pieces that can pivot between a deployment position and a facing position, facilitating the folding back and adhesion of an adherend along the end edge portion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual folding back and adhesion methods are used for curved or complex end edge portions, then the joining can be completed, but the work burden becomes very large and the process becomes complicated

Engineering Contradiction:

Improveease of folding back and adhesionVSAvoidcomplexity of joining process

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The joining device is divided into multiple attachment pieces (first, second, third attachment pieces) that can be independently positioned and operated. Each attachment piece handles a specific segment of the end edge portion, allowing complex curved edges to be processed in manageable sections rather than as a single difficult operation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Attachment pieces serve as intermediary tools between the operator and the adherend. These intermediaries provide mechanical assistance for folding back the adherend and applying adhesion simultaneously, transforming a complex manual coordination task into a simpler operation where the intermediary handles the coordination

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If traditional adhesion methods are used for linear end edges, then the process is simple and easy, but these methods fail to handle curved or complex end edge portions effectively

Engineering Contradiction:

Improveability to handle different end edge shapesVSAvoidease of folding back and adhesion

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The attachment pieces are designed with movable and adjustable characteristics, allowing them to adapt to different geometries. The first attachment piece can be positioned at various locations along the end edge, and the second and third attachment pieces can be selectively used depending on whether the end edge is convex or concave, providing dynamic adaptability to different shapes

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The joining device incorporates multiple attachment pieces that can handle various types of end edge portions (linear, curved, convex, concave) using a unified basic mechanism. This multi-functional design allows the same device structure to adapt to different geometries without requiring completely different joining methods for each case

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple attachment pieces are used to handle complex end edges, then the adaptability improves, but the device structure becomes more complex

Engineering Contradiction:

Improveability to handle different end edge shapesVSAvoidstructure of joining device

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The device is segmented into multiple independent attachment pieces rather than one complex integrated mechanism. This segmentation allows each piece to have a relatively simple structure while the combination of pieces provides the necessary adaptability for different end edge shapes

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of designing a single complex attachment mechanism that tries to handle all shapes, the invention inverts the approach by using multiple simple attachment pieces that can be selectively positioned and configured. The complexity is distributed across multiple simple components rather than concentrated in one complex component

Inventive Principle:

Principle #13The other way round (Inversion)

Data Source

PatentUS12286745B2Joining jig and joining apparatus

Publication Date: 2025.04.29 JUKI CORP

AI summary

In a joining jig for disposing a sheet-shaped adherend on one surface side of a sheet-shaped material, folding back the adherend in an end edge portion of the sheet-shaped material, and causing adhesion of an end edge portion of the adherend on the other surface side of the sheet-shaped material, by a tip portion of an attachment piece pivoting in the end edge portion of a placement surface of a placement base, the attachment piece is switchable between a deployment position where an attachment surface to which the adherend is attached is deployed outside the end edge portion of the placement surface of the placement base and a facing position where the attachment surface faces the end edge portion of the placement surface.