Free-end spinning rotor, rotor shaft and rotor cup for free-end spinning rotor

By employing a coupling device combining a polygonal floral profile and a magnetic mechanism in the free-end spinning rotor, the problems of jamming and wear under high torque loads are solved, achieving higher torque transmission capability and reduced maintenance costs.

CN121915532APending Publication Date: 2026-04-24Rieter AG
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Patent Information

Application Number
CN202511499146.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-10-22
Filing Date
2025-10-20
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing free-end spinning rotors are prone to jamming under high torque loads, and the coupling device between the rotor shaft and the rotor cup is prone to wear, leading to increased reliability and maintenance costs.

Method used

A polygonal flower-shaped profile (such as a hexagonal flower-shaped profile) is used as the coupling profile of the coupling device between the rotor shaft and the rotor cup. Combined with a magnetic mechanism and shape matching connection, a reliable connection between the rotor shaft and the rotor cup is achieved. The coupling device is protected by a sleeve to reduce the risk of wear.

Benefits of technology

It improves torque transmission capability, reduces the wear risk of coupling device, simplifies the replacement and maintenance process of the rotor, and reduces maintenance costs.

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Abstract

The invention relates to a free-end spinning rotor, a rotor shaft and a rotor cup for a free-end spinning rotor, the free-end spinning rotor (1) comprising: a rotor shaft (2) by means of which the free-end spinning rotor (1) can be supported in a bearing (3), in particular a magnetic bearing; and a rotor (4) in which fiber material can be spun. The rotor shaft (2) and the rotor cup (4) are detachably connected to each other by means of a coupling device (5), the coupling device (5) comprising a magnetic means (6), in particular a permanent magnet, for the axial connection of the rotor shaft (2) and the rotor cup (4), and a form-fitting connection for transmitting a torque between the rotor shaft (2) and the rotor cup (4), the form-fitting connection comprises a first coupling contour (8) arranged on the rotor shaft (2) and a second coupling contour (9) arranged on the rotor cup (4). The first coupling contour (8) and the second coupling contour (9) are designed as polygonal flower-shaped contours, in particular hexagonal flower-shaped contours.
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