Open-End Rotor Spinning Centering and Sealing Mechanism
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Solution Overview
Problem
Open-end rotor spinning devices face challenges in maintaining precise positioning of spinning elements and preventing false air entry, leading to inefficiencies and contamination, despite previous attempts at improving channel plate adapter fastening and sealing mechanisms.
Innovation Solution
A centering device with a guide device having annular grooves and guide stops ensures precise alignment and sealing of the channel plate adapter, combined with a multi-point locking mechanism for secure and easy exchange, preventing secondary air entry and maintaining optimal spinning component positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the channel plate adapter is fixed using screw bolts, then the adapter is securely fastened, but the fastening process becomes time-consuming and cumbersome
Solution Approach 1:
The patent replaces the traditional screw bolt mechanical fastening system with a spring-loaded locking mechanism. The spring element automatically engages with the channel plate adapter and rotor housing, providing secure fastening without requiring manual screwing operations. This substitution maintains reliable fixation while dramatically reducing the time and effort required for installation and removal.
2Productivity
If the channel plate adapter is made easily detachable, then the exchange efficiency is improved, but the secure fastening during operation is compromised
Solution Approach 1:
The patent employs a dynamic spring-loaded locking mechanism that adapts to operational conditions. During high-speed rotation, the spring force maintains strong engagement between the channel plate adapter and rotor housing, ensuring reliable fastening. When the rotor stops, the spring allows easy detachment by simply bending back the locking arm. This dynamic design resolves the contradiction between secure operation and easy exchange.
3Productivity
If the spinning elements are reduced in size to increase production output, then the productivity is improved, but the positioning precision and gap control become more difficult
Solution Approach 1:
The patent incorporates a centering device with guide surfaces that perform preliminary positioning of the channel plate adapter relative to the rotor housing before the spinning operation begins. This pre-positioning ensures that even miniaturized spinning elements are correctly aligned and spaced, maintaining manufacturing precision despite the reduced size of components. The guide surfaces compensate for any dimensional variations in the smaller parts.
4Reliability
If the cover element is tightly sealed to prevent false air entry, then the yarn quality is improved, but the sealing complexity increases
Solution Approach 1:
The patent introduces a sealing element as an intermediary component between the channel plate adapter and the rotor housing. This sealing element creates an effective air barrier that prevents false air entry, ensuring high yarn quality. The sealing element simplifies the overall sealing system by providing a dedicated, replaceable component that handles the sealing function without requiring complex integrated designs.
Data Source
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AI summary
The invention relates to an open-end rotor spinning device (3) with a spinning rotor (19) that can be driven by a single motor, the rotor cup (17) of which rotates in a vacuum-operated rotor housing (10), to which a drive (21) for the spinning rotor (19) and bearing arms (27) for a cover element (22) having a fiber ribbon dissolution device (30) are connected, and which has part of a centering device (40), wherein the rotor housing (10), which is open at the front, is closed during the spinning process by the cover element (22), which in turn has a receptacle (23) for an interchangeably arranged channel plate adapter (24).According to the invention, the centering device (40) is formed by a guide surface (36) arranged on the channel plate adapter (24) and a guide device (31) arranged on the rotor housing (10), wherein the guide surface (36) arranged on the channel plate adapter (24) corresponds positively to the guide device (31) arranged on the rotor housing (10) in the closed state of the open-end rotor spinning device (3).