Loom Drive Mechanism Vibration Reduction via Main Body Frame Mounting

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Solution Overview

Problem

In traditional looms, the drive mechanism attached to the let-off frame vibrates violently during weaving, leading to wear and potential failure due to the small structure of the let-off frame compared to the main body frame.

Innovation Solution

The drive mechanism is attached to the main body frame instead of the let-off frame, and the through-hole for the drive transmission shaft is formed as an elongated hole, allowing for adjustable positioning and reducing the impact of vibrations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the drive mechanism is attached to the let-off frame, then the structure is compact and easy to assemble, but the drive mechanism vibrates violently during weaving leading to wear and potential failure

Engineering Contradiction:
Improveease of assemblyVSAvoiddrive mechanism reliability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The drive mechanism is extracted from the let-off frame and relocated to the main body frame. This separation removes the vibrating drive mechanism from the small let-off frame structure, eliminating the violent vibrations that caused wear and failure while preserving the compact assembly benefits of the original design.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The main body frame serves as an intermediary structure between the drive mechanism and the let-off frame. By mounting the drive mechanism on the main body frame rather than directly on the let-off frame, the design uses the more robust main body frame as a mediator to support the drive mechanism, reducing vibration transmission.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the drive mechanism is attached to the main body frame, then the vibration of the drive mechanism is reduced, but the structure becomes more complex

Engineering Contradiction:
Improvedrive mechanism stabilityVSAvoidframe structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The drive mechanism is merged with the main body frame structure. Since the main body frame already exists as a structural component of the loom, attaching the drive mechanism to it utilizes an existing framework rather than requiring a separate mounting structure, thereby reducing overall structural complexity while improving vibration resistance.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple molds are used to handle various warp beam sizes, then the loom can accommodate different warp beam sizes, but the manufacturing cost increases

Engineering Contradiction:
Improvewarp beam size adaptabilityVSAvoidmanufacturing cost
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The beam support and let-off frame are designed with universal features that can accommodate multiple warp beam sizes. The elongated through-hole in the let-off frame allows adjustment for different beam diameters, and the beam support structure can be positioned to handle various beam sizes, eliminating the need for multiple specialized molds and reducing manufacturing costs.

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

Data Source

PatentUS12209334B2Loom
Publication Date: 2025.01.28 TSUDAKOMA KOGYO KK
  • US12209334B2 patent drawing
  • US12209334B2 patent drawing
  • US12209334B2 patent drawing

AI summary

A loom includes a pair of side frames configured to support a beating device and each having a beam support configured to support a warp beam; and a drive mechanism configured to rotationally drive the warp beam including a beam gear, where each of the side frames is configured by a main body frame configured to support the beating device and a let-off frame fixed to the main body frame and configured to support the beam support. The drive mechanism is attached to the main body frame.