Fiber Bundle Joining Roller Mechanism for Precision Alignment

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Solution Overview

Problem

Current fiber bundle joining apparatuses lack sufficient precision in positioning resin-impregnated fiber bundles during the joining process, leading to potential misalignment and instability in thermocompression bonding.

Innovation Solution

A fiber bundle joining apparatus comprising a support table, a roller mechanism with a rotation restriction mechanism, and a movement mechanism that allows for precise alignment and stacking of the leading end portion of a second fiber bundle around the terminal end portion of a first fiber bundle, followed by thermocompression bonding to ensure accurate positioning and integration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional joining apparatuses are used, then the joining process can be completed, but the positioning precision of fiber bundles is insufficient

Engineering Contradiction:
Improvepositioning precisionVSAvoidjoining stability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The roller mechanism performs preliminary positioning action by winding the leading end portion of the second fiber bundle around it before the actual joining operation. This preliminary action ensures that the fiber bundles are accurately aligned and stacked on top of each other, achieving high positioning precision and stable joining results.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The roller acts as an intermediary tool between the two fiber bundles. By winding the second fiber bundle around the roller and then moving the roller to the first fiber bundle, the system achieves precise positioning without direct contact between the fiber bundle ends, thereby improving both positioning precision and joining stability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Manufacturing precision

If fiber bundles are joined without precise positioning mechanisms, then the apparatus structure remains simple, but misalignment occurs during thermocompression bonding

Engineering Contradiction:
Improvealignment accuracyVSAvoidapparatus structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The roller mechanism serves multiple functions: it winds the second fiber bundle, positions it accurately on the first fiber bundle, and facilitates the stacking alignment. This multi-functionality achieves high alignment accuracy without adding complex separate positioning devices, thus balancing precision with structural simplicity.

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

3Stability of the object's composition

If the leading end portion is wound around the roller more than one turn, then the stacking stability improves, but the movement distance increases

Engineering Contradiction:
Improvestacking stabilityVSAvoidmovement distance
Core Design Contradiction:
Stability of the object's compositionVSLength of moving object

Solution Approach 1:

The system intentionally uses excessive action by winding the second fiber bundle around the roller more than one turn. This ensures sufficient stacking stability and prevents misalignment during joining, while the movement distance increase is acceptable given the improved reliability and positioning accuracy achieved.

Inventive Principle:
Principle #16Partial or excessive 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

Enables accurate and stable joining of resin-impregnated fiber bundles, reducing misalignment and enhancing the reliability of the thermocompression bonding process.

Implementation Method 1

a thermocompression bonding mechanism configured to integrally pressure-bond the terminal end portion side of the first fiber bundle and the leading end portion side of the second fiber bundle stacked on the support table

Methodology Applied
Scientific EffectThermocompression bonding:

Data Source

PatentUS11008192B2Fiber bundle joining apparatus and fiber bundle joining method
Publication Date: 2021.05.18 TOYOTA JIDOSHA KK
  • US11008192B2 patent drawing
  • US11008192B2 patent drawing
  • US11008192B2 patent drawing

AI summary

A fiber bundle joining apparatus includes: a support table configured to hold a terminal end portion side of a first fiber bundle; a roller mechanism having a roller around which a leading end portion side of a second fiber bundle is capable of being wound; a movement mechanism configured to perform a first movement for moving the roller mechanism to the vicinity of the terminal end portion side of the first fiber bundle, and a second movement for further moving the roller mechanism on the terminal end portion side of the first fiber bundle to create a state where the leading end portion side of the second fiber bundle is stacked on the terminal end portion side of the first fiber bundle; and a thermocompression bonding mechanism configured to pressure-bond the first fiber bundle and the second fiber bundle.