Spool Holder Spring Mechanism Rotation Control

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Solution Overview

Problem

Existing spool holders lack efficient mechanisms to regulate the rotation of spools during material unwinding and winding processes, leading to potential material slippage and inefficiencies in machining and welding operations.

Innovation Solution

A spool holder design featuring a cylinder with radially extending plates that restrict axial movement and a mechanism using a spring and lever system to control the rotation of the spool, ensuring consistent and controlled spool rotation by urging the second plate and spool toward the first plate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a simple spool holder structure is used, then device complexity is reduced, but rotation control capability deteriorates

Engineering Contradiction:
Improvespool holder structureVSAvoidrotation control
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The spool holder employs a spring-loaded mechanism that dynamically adjusts the pressing force between the drive wheel and the spool flange. The spring allows the system to adapt to varying spool sizes and weights while maintaining consistent rotational control, transforming a static structure into a dynamically responsive one that resolves the contradiction between simplicity and control reliability.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The spring acts as an intermediary element between the fixed mounting structure and the rotating spool. It mediates the force transmission, providing controlled pressure to regulate rotation without requiring complex mechanical linkages, thus maintaining structural simplicity while improving rotation control capability.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a spring-loaded mechanism is added to control rotation, then rotation control capability is improved, but device complexity increases

Engineering Contradiction:
Improverotation controlVSAvoidspool holder structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The spring-loaded mechanism is designed to be self-regulating, automatically adjusting to different spool configurations without external intervention. The spring's elastic properties enable it to self-adjust the pressing force based on the spool's characteristics, eliminating the need for complex adjustment mechanisms and reducing overall device complexity while maintaining reliable rotation control.

Inventive Principle:
Principle #25Self-service

3Reliability

If the second plate is configured to rotate with the spool, then rotation regulation is achieved, but axial movement restriction becomes more difficult

Engineering Contradiction:
Improverotation regulationVSAvoidaxial movement restriction
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The design merges the rotation regulation function and axial movement restriction into a unified structure. The second plate serves dual purposes: it rotates with the spool to enable rotation regulation while simultaneously acting as a physical barrier that restricts axial movement. This consolidation of functions simplifies the overall structure and improves ease of operation.

Inventive Principle:
Principle #5Merging (Combining)

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 spool holder assembly provides controlled rotation, reducing material slippage and increasing operational efficiency in processes like welding, while maintaining cost-effectiveness.

Implementation Method 1

A mechanism, including a spring and lever, urges the second plate and, thus, the spool of wire toward the first plate. The spring applies elastic force to control the rotation of the spool by maintaining contact pressure between the plates.

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10287129B2Spool holder and method of supporting spool of wire with spool holder
Publication Date: 2019.05.14 CATERPILLAR INC
  • US10287129B2 patent drawing
  • US10287129B2 patent drawing
  • US10287129B2 patent drawing

AI summary

A spool holder includes a cylinder defining a longitudinal axis and having an external surface on which a spool of wire may be supported. A first plate is positioned at a first end of the cylinder and a second plate is positioned at a second end of the cylinder. Both first and second plates have portions extending radially outward from the external surface of the cylinder. The first and second plates both have a perpendicular orientation relative to the longitudinal axis. The first and second plates restrict axial movement of the spool of wire therebetween. The first plate and cylinder are stationary relative to a mounting structure, while the second plate is configured to rotate with the spool of wire. A mechanism urges the second plate and, thus, the spool of wire toward the first plate, thereby regulating rotation of the spool of wire.