Suction Drum Axial Fixing for Spinning Machine Maintenance
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Solution Overview
Problem
The existing fiber compression devices in spinning machines face issues with fiber detachment leading to blockages and accumulation, which disrupts the drive torque transmission and requires frequent assembly and disassembly, resulting in maintenance challenges due to friction rust formation.
Innovation Solution
The suction drum is axially fixed to a bolt via a bearing element, forming a separate unit that prevents separation, using a roller bearing or a sleeve with a flexibly deflectable locking element for secure attachment, allowing for easy assembly and disassembly while preventing fretting and rust formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction drum is frequently assembled and disassembled for cleaning, then fiber blockages are removed, but friction rust forms on the shaft journal and bearing element
Solution Approach 1:
The suction drum assembly is segmented into separable components (suction drum, shaft journal, bearing element) that can be independently accessed. The bearing element can be removed with the suction drum while the shaft journal remains on the carrier, allowing cleaning without complete disassembly and reducing friction rust formation.
Solution Approach 2:
The bearing element is designed to be easily removed and recovered with the suction drum during maintenance cycles. This allows the bearing element to be cleaned or replaced without damaging the shaft journal, preventing friction rust while maintaining compression quality.
2Reliability
If the suction drum is firmly fixed to the shaft, then drive torque transmission is ensured, but assembly and disassembly becomes difficult
Solution Approach 1:
The connection between the suction drum and shaft journal transitions from a static firm fixation to a dynamic removable connection. The bearing element provides stable drive torque transmission during operation but allows easy removal when needed, balancing reliability with ease of maintenance.
Solution Approach 2:
The bearing element acts as an intermediary component between the suction drum and shaft journal. It ensures reliable drive torque transmission during operation while enabling easy assembly and disassembly by serving as a removable connection interface.
3Ease of operation
If the suction drum is easily removed from the shaft, then maintenance is simplified, but drive torque transmission may be interrupted
Solution Approach 1:
The bearing element is pre-installed on the shaft journal before the suction drum is attached. This preliminary action ensures that when the suction drum is removed for maintenance, the bearing element remains in place on the shaft journal, preserving the connection interface and enabling quick reassembly without interrupting drive torque transmission capability.
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
This solution ensures continuous drive torque transmission and simplifies maintenance by preventing fiber accumulation and reducing friction rust, enhancing the assembly and disassembly process of the suction drum.
Implementation Method 1
a bearing element arranged in the area of the closed end face, via which the suction drum is rotatably mounted on an end portion of the bolt
Implementation Method 2
A suction insert is held non-rotatably on the stub axle and is in turn connected to a vacuum source via a suction hose
Data Source
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AI summary
The invention relates to a device (VM) for compressing a fiber sliver (V) on a spinning machine, comprising a carrier (16), which has a receptacle for a pin (36), and comprising a rotatably supported suction drum (14), which has a closed and an open end face (34, 35), a bearing element (K) being arranged in the region of the closed end face (34), by means of which bearing element the suction drum (14) is rotatably supported on an end segment of the pin (36), wherein the pin (36) protrudes from the open end face (35) of the suction drum (14). In order that the suction drum (14) can be simply and quickly installed and removed during the entire service life of the compressing device (VM), the suction drum (14) is axially fixed to the pin (36) by means the bearing element (K), as viewed in the axial direction of the suction drum, such that the suction drum (14) and the pin (36) form a separate unit of the device (VM), and at least one fastener (45) is provided, by means of which the pin (36) is detachably fastened in the receptacle (19).