Yarn Feeder Magnetic Driver Direct Drive Tension Control
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Solution Overview
Problem
Conventional yarn feeders face issues with indirect driving of the winding wheel, leading to imprecise rotational speed control and tension management due to belt wear, and have a bulky, space-consuming design.
Innovation Solution
A yarn feeder design featuring a driver with a stator disc and rotor disc that creates a magnetic field to directly drive the winding wheel, combined with a tension controller for precise rotational speed adjustment, simplifying the structure and improving efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a belt member is used to connect the driving motor to the winding wheel, then the driving mechanism can be implemented, but the belt member is prone to wear and idling of transmission, leading to imprecise rotational speed control
Solution Approach 1:
The patent replaces the mechanical belt transmission system with a magnetic field-driven system. The stator disc generates a magnetic field that directly drives the rotor disc and winding wheel, eliminating the belt member and its associated wear and slippage problems. This substitution of mechanical transmission with electromagnetic drive resolves both the reliability and precision control issues.
2Ease of operation
If a driving motor with belt member is used, then the winding wheel can be driven, but the components are bulky and space-consuming
Solution Approach 1:
The patent merges the driving motor, transmission mechanism, and winding wheel into a single integrated driver assembly. The stator disc, rotor disc, and winding wheel are combined in one compact unit, eliminating the need for separate motor housing, belt, and pulley systems. This merging significantly reduces the overall volume while maintaining full driving capability.
3Ease of operation
If a conventional driving mechanism with multiple components is used, then the winding function can be achieved, but the structure is complex and difficult to manufacture
Solution Approach 1:
The patent combines multiple functional components (motor, transmission, winding wheel) into a single integrated driver unit with a unified housing. This merging reduces the number of separate parts and assembly steps, simplifying both the structure and manufacturing process while preserving the complete winding function.
Solution Approach 2:
The driver is designed as a modular segmented structure with front and rear covers that can be assembled separately and then joined. This segmentation allows for easier manufacturing and assembly of complex internal components while maintaining overall structural simplicity.
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 magnetic field-driven mechanism enhances driving efficiency and allows for precise control of rotational speed and tension, addressing the imprecision and bulkiness issues of conventional feeders.
Implementation Method 1
the energized coils of the stator disc are configured to create a magnetic field which can drive the rotor disc to rotate
Data Source
AI summary
A yarn feeder may comprise a driver and a winding wheel. The driver has a front cover, a rear cover, a stator disc and a rotor disc, and the front cover and the rear cover are configured to fit together to form a housing therebetween which accommodates the stator disc and the rotor disc therein. The stator disc has a first through hole, and a plurality of teeth are formed around the first through hole to enable a couple of coils to be wound thereon. The rotor disc has a connecting hole, and a plurality of magnetic members are formed around the connecting hole. A connecting base extended from a first end of the winding wheel is engaged with the connecting hole, and the driver is connected to a tension controller to detect the tension of yarn and further to control the rotational speed of the driver.