Conical Protective Ring for Spinning Machine Shaft Interfaces
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Solution Overview
Problem
During the spinning process, fibers, fiber particles, and loose thread ends accumulate in the connection area between the drive unit and the wave, leading to disturbances in the drive function and eventual shutdown of the spinning machine.
Innovation Solution
A drive device for a spinning machine featuring a motor drive unit and at least one gear unit, connected via a wave and protected by a protective ring. The protective ring has a cylindrical base and a conical end section that covers the connection area, effectively preventing the accumulation of fibers and threads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shaft is enclosed within a closed housing, then protection against contamination is improved, but accessibility for maintenance and component replacement deteriorates
Solution Approach 1:
The protective housing is segmented into a stationary housing component and a rotatable protective ring that can be independently removed. This allows the protective function to be separated from the shaft, enabling maintenance access without compromising contamination protection when the ring is in place.
Solution Approach 2:
The protective ring is designed to be rotatable and removable from the shaft, transforming the static enclosed housing into a dynamic protective structure. This allows the protection level to be adjusted - fully protected during operation, easily accessible during maintenance by simply removing the ring.
2Ease of operation
If the shaft is designed as an open structure, then accessibility for maintenance and component replacement is improved, but protection against contamination deteriorates
Solution Approach 1:
The protective ring acts as an intermediary element between the open shaft structure and the contaminated environment. It provides the necessary contamination barrier while maintaining the inherent accessibility advantages of an open shaft design, as the ring can be easily removed when maintenance is needed.
3Reliability
If a protective structure is added to the shaft, then protection against contamination is improved, but device complexity increases
Solution Approach 1:
The protective ring is designed as a simple cylindrical shell with a thin wall structure, providing effective contamination protection with minimal added complexity. The simple geometric form allows for easy manufacturing and assembly without significantly increasing device complexity.
Solution Approach 2:
The protective ring is designed as a simple, inexpensive component that can be easily replaced if needed. Its straightforward construction from basic materials makes it cost-effective and minimizes the impact on overall device complexity while providing reliable protection.
Data Source
Figure 1
AI summary
The invention relates to a protective ring for protecting a connection area between a shaft and a housing component of a spinning machine against yarn winding or contamination, and to a drive device for a spinning machine, comprising a motor drive unit and at least one gear unit, wherein the drive unit and/or the gear unit is connected to a further component, in particular to a further gear unit, by means of a shaft.In order to create a protective ring and a drive unit for a spinning machine that enable particularly easy inspection and maintenance as well as simple replacement of components of a spinning machine shaft and, in particular, effectively prevent contamination, especially of the shaft bearings and/or the drive unit, by fibers, fiber particles and threads despite a housing-less design of the shaft, it is provided that the protective ring has a cylindrical base body for rotationally fixed arrangement of the protective ring on the shaft and a conical end section adjacent to the cylindrical base body for the particularly gap-free covering of the connection area and for guiding away dirt particles and threads from the connection area.