Spindle Cutting Device with Universal Clamping Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing ring spinning spindles lack a universal and safe method for attaching and replacing a separating device, which poses a risk of injury and is costly due to the need for specialized spindles and protruding sharp edges.

Innovation Solution

A spindle design with a separate clamping area that encircles the shaft, allowing for secure attachment of a separating device without special fastening, featuring a circular clamping area and optional slots or projections for enhanced clamping and safety, with a flat design that reduces injury risk and allows for easy replacement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a separating device is attached to the spindle using a groove and lug mechanism, then the separating device can be secured to the spindle, but the spindle requires special modifications that reduce versatility and increase manufacturing complexity

Engineering Contradiction:

Improveattachment reliabilityVSAvoidspindle compatibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The clamp is designed with a universal clamping mechanism that can attach to conventional spindles without requiring special grooves or modifications. The clamping area can encircle the shaft of various spindle types, making the separating device compatible with multiple spindle designs while maintaining secure attachment

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The separating device is divided into independent components: the clamp and the separating element. The clamp can be separately attached to the spindle shaft, and the separating element is mounted on the clamp. This segmentation allows the separating device to be easily replaced or adjusted without affecting the spindle

Inventive Principle:

Principle #1Segmentation

2Productivity

If the separating device uses protruding teeth or spikes for thread separation, then the separating function is effective, but the risk of injury to operators increases

Engineering Contradiction:

Improvethread separation efficiencyVSAvoidoperator injury risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The sharp edges or blades that could potentially cause injury are enclosed within the clamp structure. The separating function is maintained through controlled cutting edges that only expose when needed for thread separation, while the clamp body protects operators from direct contact with sharp elements during normal operation

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The clamp provides a protective enclosure around the separating elements. The design allows the separating edges to function effectively while being shielded by the clamp structure, reducing the exposure of sharp elements to operators

Inventive Principle:

Principle #30Flexible shells and thin films

3Device complexity

If the separating device is integrated into the spindle base, then the structure is compact, but the replacing of the separating device becomes difficult and time-consuming

Engineering Contradiction:

Improvestructural compactnessVSAvoidseparating device replaceability

Core Design Contradiction:

Device complexityVSEase of repair

Solution Approach 1:

The separating device is designed as a separate component that attaches to the clamp, which in turn attaches to the spindle shaft. This segmentation allows the separating element to be easily removed and replaced by simply detaching it from the clamp, without affecting the spindle structure or requiring complex disassembly procedures

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The clamp provides a dynamic attachment mechanism that allows for quick connection and disconnection of the separating device. The clamping area can securely hold the separating element during operation but allows for rapid release when replacement is needed, enabling maintenance without stopping the entire spindle system

Inventive Principle:

Principle #15Dynamics

4Reliability

If each spool is equipped with its own ring and teeth, then the separating function is provided for each position, but the cost increases significantly

Engineering Contradiction:

Improveseparating function coverageVSAvoidmaterial cost

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

The clamp design serves multiple functions: it attaches the separating device to the spindle shaft, provides structural support, and enables easy replacement. This universal clamp mechanism can be used across different spindle types and positions, reducing the need for specialized components at each spool location and lowering overall material costs

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP3368708B1Spindle with a cutting device

Publication Date: 2022.01.12 MASCHINENFABRIK RIETER AG

Figure 1
Figure 2a~2b
Figure 3a~3b

AI summary

The present invention relates to a spindle (1) for a workstation of a textile machine, in particular of a ring spinning machine, having a shank (2) for receiving a tube which becomes a cop (3) as the result of a thread being wound up, and a cutting device (5, 15, 20) for cutting the thread when the cop (3) is taken off the spindle (1), wherein the cutting device (5, 15, 20) has a cutout (11) for enclosing the shank (2), an inner region (12, 24) adjoining the cutout (11), and a cutting region (10, 16, 21). According to the invention, the inner region (12, 24) of the cutting device (5, 15, 20) has at least one clamping region (13, 25) for clamping the cutting device (5, 15, 20) to the shank (2). Furthermore, the invention relates to a cutting device (5, 15, 20) for cutting a thread when a cop (3) is taken off a spindle (1).