Silicon Rod Unloading Jig With Cord Support to Reduce Contamination

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Solution Overview

Problem

Conventional takeout jigs for silicon rods risk damaging the rods during extraction due to excessive contact and potential contamination, as they often involve direct contact with tubular members and air bags, which can cause shaking and contamination.

Innovation Solution

A takeout jig comprising a support part that clamps the silicon rod's end portions and uses multiple first and second cords to lift and hold the rod, minimizing direct contact and reducing the risk of damage through a method that includes connecting first cords to the support part, pulling it up, and wrapping second cords around the rod for secure holding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tubular member and air bag are used to hold the silicon rod, then the silicon rod can be supported during extraction, but the silicon rod is contacted much which causes damage and contamination

Engineering Contradiction:
Improvesupport stabilityVSAvoiddamage and contamination
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a protective tube as an intermediary component between the extraction mechanism and the silicon rod. The protective tube holds the silicon rod during extraction, reducing direct contact between the rod and the tubular member/air bag system. This mediator protects the silicon rod from damage and contamination while still enabling stable support during the extraction process.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the silicon rod is contacted much by the tubular member, then the rod can be held securely, but shaking of the tubular member causes damage to the silicon rod

Engineering Contradiction:
Improveholding securityVSAvoidrod integrity
Core Design Contradiction:
Stability of the object's compositionVSStrength

Solution Approach 1:

The protective tube serves as a mediator that decouples the holding function from the extraction mechanism. It provides a gentle holding interface for the silicon rod while the outer tubular member handles the extraction forces, preventing direct transmission of shaking forces to the rod and maintaining both holding security and rod integrity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The protective tube acts as a flexible intermediary shell that can accommodate the silicon rod while filtering out harmful vibrations and shocks from the extraction process. This flexible structure maintains secure holding while protecting the rod from mechanical damage caused by tubular member shaking.

Inventive Principle:
Principle #30Flexible shells and thin films

3Ease of operation

If the silicon rod is contacted much, then the rod can be supported during extraction, but the polycrystalline silicon rod is contaminated

Engineering Contradiction:
Improveextraction operationVSAvoidrod purity
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The protective tube is a clean intermediary component that prevents contamination between the extraction mechanism and the silicon rod. It allows the extraction operation to proceed easily while maintaining rod purity by providing a clean barrier that prevents contact between the rod and potential contaminants in the extraction system.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11958723B2Unloading jig, unloading method, and method for producing silicon rod
Publication Date: 2024.04.16 TOKUYAMA CORP
  • US11958723B2 patent drawing
  • US11958723B2 patent drawing
  • US11958723B2 patent drawing

AI summary

A takeout jig (1) includes: a support part (20) which is configured to be pulled up to take out a silicon rod (10) and which is configured to support the silicon rod (10) by clamping one or more end portions (15) of the silicon rod (10); one or more first cords (30) which are equal in number to or greater in number than the silicon rod (10) and which are configured to pull up the support part (20); and one or more second cords (40) which are configured to hold the silicon rod (10) by wrapping around the silicon rod (10).