Combing Machine Detaching Cylinder Continuous Rotary Motion

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Solution Overview

Problem

Conventional combing machines with alternating rotary motion in detaching cylinders fail to produce a satisfactory quality of combed sliver due to inefficiencies in the combing process.

Innovation Solution

A combing machine equipped with detaching cylinders having continuous rotary motion, either at a constant or variable speed, and auxiliary cylinders with continuous rotary motion, ensuring unidirectional speed to improve the quality of the combed sliver by enhancing the combing process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If detaching cylinders have alternating rotary motion, then the basic combing operations can be performed, but the quality of combed sliver is unsatisfactory

Engineering Contradiction:
Improvequality of combed sliverVSAvoidcomplexity of detaching cylinder motion mechanism
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent inverts the conventional alternating rotary motion of detaching cylinders to continuous unidirectional rotary motion. This fundamental reversal of the motion pattern eliminates the quality defects associated with alternating motion while maintaining the combing function, directly resolving the contradiction between sliver quality and mechanism complexity.

Inventive Principle:
Principle #13The other way round (Inversion)

Solution Approach 2:

The patent implements continuous rotary motion of the detaching cylinders instead of intermittent alternating motion. This continuity ensures consistent fiber processing throughout the cycle, eliminating quality variations and producing satisfactory combed sliver without requiring complex motion control mechanisms.

Inventive Principle:
Principle #20Continuity of useful action

2Manufacturing precision

If conventional alternating rotary motion is used in detaching cylinders, then the combing process can operate, but fiber parallelization and cleanliness are insufficient

Engineering Contradiction:
Improvefiber parallelization and cleanlinessVSAvoidcombing process efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The continuous unidirectional rotation of detaching cylinders and auxiliary cylinders ensures uninterrupted fiber processing. This continuous action improves fiber parallelization and cleanliness by consistently processing all fibers through the combing zone, while maintaining high productivity through the efficient continuous cycle.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The patent changes the motion parameter of the detaching cylinders from alternating rotary motion to continuous unidirectional rotary motion. This parameter change fundamentally improves fiber processing quality by ensuring all fibers are subjected to consistent combing action, achieving satisfactory parallelization and cleanliness without sacrificing productivity.

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If continuous rotary motion is implemented in detaching and auxiliary cylinders, then high-quality combed sliver is produced, but the device complexity increases

Engineering Contradiction:
Improvequality of combed sliverVSAvoidcomplexity of cylinder motion control
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies the inversion principle by reversing the conventional alternating motion pattern to continuous unidirectional motion. This simplifies the motion control mechanism compared to complex alternating motion systems while achieving superior sliver quality, effectively resolving the contradiction between quality improvement and complexity increase.

Inventive Principle:
Principle #13The other way round (Inversion)

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 continuous rotary motion of the detaching and auxiliary cylinders results in a high-quality combed sliver with controlled drafting, improving the parallelization and cleanliness of fibers.

Implementation Method 1

the upper detaching cylinder 20a' is in pressure contact with the lower detaching cylinder 20b' and driven in rotation thereby

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

a lower auxiliary cylinder 20b, usually in pressure contact with the upper auxiliary cylinder 20a and preferably driven in rotation thereby

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3953507B1Combing machine for a spinning preparation line
Publication Date: 2023.03.29 MARZOLI MASCH TEXTILE SRL
  • EP3953507B1 patent drawingFigure 1
  • EP3953507B1 patent drawingFigure 2

AI summary

A combing machine (1) for a spinning preparation line comprises a plurality of combing heads (2) and a drafting device (600) for each combing head, located downstream of the gripper and upstream of the deviation means, suitable for drafting the combed web.