Interchangeable Drum Braking Organ for Yarn Feeders
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Solution Overview
Problem
Conventional storage yarn feeders lack flexibility and ease of maintenance due to non-interchangeable drum components, leading to variations in yarn tension and production defects, as well as difficulties in replacing worn or damaged parts without stopping the textile machine.
Innovation Solution
A storage yarn feeder design where the braking organ and at least part of the drum are easily interchangeable, allowing for direct replacement on the machine, using a magnetic braking organ with separable components and a screw-based assembly for rapid part swapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the drum and braking organ are made as fixed non-interchangeable components, then the device structure is simple, but the yarn tension varies due to wear and maintenance becomes difficult
Solution Approach 1:
The drum is divided into a fixed drum body and a removable drum end cap that can be easily detached and replaced. The braking organ is segmented into a fixed housing and a removable braking element. This segmentation allows worn components to be quickly swapped without replacing the entire assembly, maintaining yarn tension consistency while keeping the overall structure simple.
Solution Approach 2:
The drum end cap and braking element are designed with dynamic replaceability through magnetic coupling and snap-fit mechanisms. These components can be quickly attached and detached during operation or maintenance, allowing the system to adapt to wear conditions without complex disassembly procedures.
2Device complexity
If the drum components are made non-interchangeable, then the device complexity is reduced, but replacement of worn parts requires stopping the textile machine
Solution Approach 1:
The drum is segmented into a fixed body and a removable end cap, while the braking organ is segmented into a fixed housing and a removable braking element. This allows quick replacement of worn components without stopping the textile machine, as the removable parts can be swapped in place during continuous operation.
Solution Approach 2:
The magnetic coupling system allows the drum end cap and braking element to be easily attached and detached by the operator without requiring specialized tools or machine shutdown, enabling self-service maintenance that maintains productivity.
3Device complexity
If manual adjustment of braking is used, then the device is simpler, but periodic checks are required to maintain proper yarn tension
Solution Approach 1:
A tension sensor continuously monitors the yarn tension and provides feedback to an electronic control system. This closed-loop feedback mechanism automatically adjusts the braking force to maintain consistent yarn tension, eliminating the need for periodic manual checks and reducing maintenance time.
Solution Approach 2:
The manual mechanical adjustment system is replaced with an electronic control system that uses a tension sensor and stepper motor to automatically regulate braking force. This substitution eliminates the need for operator intervention and periodic maintenance checks.
4Manufacturing precision
If electronic control with tension sensor is implemented, then yarn tension regulation is improved, but the braking organ and drum surfaces wear faster due to continuous pressure
Solution Approach 1:
The drum is divided into a fixed body and a removable end cap, and the braking organ is divided into a fixed housing and a removable braking element. This segmentation allows the worn contact surfaces (end cap and braking element) to be easily replaced without replacing the entire drum or braking organ, extending the service life of the main components while maintaining precise tension control.
Solution Approach 2:
The removable drum end cap and braking element are designed as consumable parts that can be quickly discarded when worn and replaced with new components. This allows the expensive main drum body and braking organ housing to be recovered and reused, extending their service life while maintaining manufacturing precision.
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
Enables quick replacement of worn parts without stopping the textile machine, maintaining consistent yarn tension and reducing production downtime and costs.
Implementation Method 1
the conical body is held in position and pressed against the drum by one or more opposing magnets; the intensity of the magnetic field generated determines the average tension of the outgoing yarn
Implementation Method 2
the conical body is held in position and pressed against the drum by one or more springs whose force determines the average tension of the outgoing yarn. These springs have the task not only of 'pressing' the conical body onto the drum, but also of acting as a shock-absorber if a knot is present in the yarn
Implementation Method 3
The tension of the yarn is therefore the result of a series of frictions generated between the yarn and the two above-mentioned (contact) surfaces
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A storage yarn feeder (1) comprises a body (2) having a portion or drum (3) onto which winds a yarn (4) forming at least one coil, said yarn (4) coming from a reel, being provided with a braking organ (8) cooperating with said drum (3) to brake the yarn (4) leaving said drum (3), said braking organ (8) comprising braking means capable of cooperating with the yarn (4) when it detaches from the drum (3) as it leaves the feeder and heads towards a textile machine. The drum (3) comprises a first (3A) and a second portion (3B), the latter being capable of supporting the yarn (4) and being separable from the first portion (3A) so as to be capable of being replaced, said first portion being connected to the body (2) of the feeder.