Open-End Rotor Spinning Fiber Guide Channel Adaptation
Solution Overview
Problem
Existing open-end rotor spinning devices face challenges in maintaining optimal fiber guide channel angles during spinning rotor and channel plate adapter changes, leading to potential separation of channel sections and unfavorable spinning conditions.
Innovation Solution
A two-part fiber guide channel insert design where the second component can be easily connected to the first via a connecting flange with a groove for a sealant, ensuring a precise angle of inclination matching the channel plate adapter, and a concavely curved sealing surface for clean pneumatic transition, allowing for simple adaptation to new conditions without compromising air flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the channel plate adapter is fixed in a precise position in the cover element, then the structural stability is improved, but the adaptability to different spinning rotors deteriorates
Solution Approach 1:
The fiber guide channel is divided into two separate parts: an inlet-side channel section arranged in a fiber guide channel insert and an outlet-side channel section arranged in the channel plate adapter. This segmentation allows each part to be independently designed and optimized for specific spinning rotor configurations, enabling adaptability while maintaining structural stability through precise assembly of the segmented components.
Solution Approach 2:
The fiber guide channel insert and channel plate adapter are designed as interchangeable components that can be matched to different spinning rotor types. The insert can be exchanged depending on the spinning rotor diameter and configuration, making the system universally adaptable to various spinning conditions while the channel plate adapter remains fixed in the cover element.
2Productivity
If the channel sections are arranged at a precise angle of inclination, then the fiber transport efficiency is improved, but the device complexity increases
Solution Approach 1:
By segmenting the fiber guide channel into inlet-side and outlet-side sections arranged in separate components (fiber guide channel insert and channel plate adapter), the precise angle of inclination can be built into the geometry of these segments. This allows optimal fiber transport efficiency through precise angular arrangement without requiring complex adjustment mechanisms, as the angle is fixed during manufacturing of the segments.
Solution Approach 2:
The angle of inclination between the central longitudinal lines of the channel sections is optimized as a fixed geometric parameter in the design of the fiber guide channel insert and channel plate adapter. This parameter is tailored to match specific yarn and spinning parameters, achieving optimal fiber transport efficiency without adding device complexity through adjustable mechanisms.
3Adaptability or versatility
If the fiber guide channel insert is made exchangeable, then the adaptability to different spinning conditions is improved, but the ease of operation deteriorates
Solution Approach 1:
The fiber guide channel is segmented into an exchangeable insert and a fixed channel plate adapter. The insert is designed as a self-contained unit that can be quickly removed and replaced depending on spinning conditions, such as when changing yarn lots or adapting to different spinning rotor diameters. This segmentation enables easy exchangeability without requiring complex disassembly procedures.
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
Ensures optimal fiber feeding and pneumatic transport by maintaining a suitable angle of inclination between channel sections, ensuring consistent yarn quality and easy adaptation to new spinning conditions without increasing complexity or cost.
Implementation Method 1
a negative pressure source (11) which generates negative spinning pressure in the rotor housing (2)
Implementation Method 2
The connecting flange (33) has a groove (34) in which a sealing means (35), preferably an O-seal, is fixed
Implementation Method 3
The second component (32) has in the exit area of the duct section (26B) a concavely curved sealing surface (36), which corresponds to an associated channel plate adapter (12)
Data Source
AI summary
The invention relates to an open-end rotor spinning device comprising a spinning rotor which, during the spinning process, rotates at a high rotational speed inside a rotor housing, which can be subjected to negative pressure and which can be closed by a covering element. The covering element has a receptacle for positioning a channel plate adapter matched to the spinning rotor, an opening cylinder rotatably supported in an opening cylinder housing, and an at least two-part fiber guide channel having channel sections, the center longitudinal axes of which are arranged at an angle to one another, and of which the channel section on the input side is integrated into a fiber guide channel insert which can be fixed in a bearing hole in the opening cylinder housing, while the channel section on the output side is a constituent part of the respective channel plate adapter. According to the invention, a fiber guide channel insert (30) can be fixed in the bearing hole in the opening cylinder housing (17), of which insert at least one channel portion (28, 28B) runs at an angle of inclination (a, ß) with respect to a reference line (29) arranged parallel to the outer wall of the fiber guide channel insert (30), wherein the angle of inclination (a, ß) is in each case matched to an associated channel plate adapter (12).