Suction Nozzle for Automatic Cheese Changing in Rotor Spinning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Open-end rotor spinning machines require manual intervention or specialized service units for cheese/empty tube changes, leading to inefficiencies and increased downtime.
Innovation Solution
The implementation of a movably mounted second suction nozzle, controlled by a drive device, which can be positioned to cut and temporarily dispose of the thread, allowing for automatic cheese/empty tube changes without operator intervention, minimizing downtime and eliminating the need for additional service units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual intervention or specialized service units are used for cheese/empty tube changes, then the changing process can be performed, but efficiency decreases and downtime increases
Solution Approach 1:
The workstation is equipped with its own empty tube magazine and automatic cheese changing mechanism, enabling it to perform cheese/empty tube changes independently without requiring external service units or manual intervention. The creel automatically exchanges the filled cheese for a new empty tube using the stored empty tubes,实现 self-service functionality that eliminates waiting for mobile service units and reduces downtime
2Loss of time
If multiple service units are used simultaneously on long open-end rotor spinning machines, then individual work stations can be served faster, but device complexity increases
Solution Approach 1:
The empty tube magazine and cheese changing functionality are extracted from the mobile service units and integrated directly into each workstation. This distributes the cheese changing capability to individual workstations rather than concentrating it in separate service units, eliminating the need for multiple service units while maintaining fast response times
3Extent of automation
If a movable second suction nozzle is added to automatically dispose of thread during cheese changes, then automation increases and downtime decreases, but device complexity increases
Solution Approach 1:
The second suction nozzle is designed with multi-functionality: it can dispose of thread during cheese/empty tube changes, and can also be used for thread cutting and other thread management tasks. This universal component serves multiple purposes within the workstation, justifying its addition by providing broad automation capabilities rather than being a single-purpose addition
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
Enables safer, faster, and cost-effective cross-wound bobbin/empty tube changes, reducing time expenditure and increasing productivity by automating the cheese/empty tube change process, thereby enhancing the overall efficiency of open-end spinning machines.
Implementation Method 1
a movably mounted second suction nozzle (11) which, if required, can be subjected to a defined vacuum and can be positioned by a drive device (13)
Data Source
Figure 1
Figure 2~3
AI summary
The method involves introducing a change of cross-coil/empty sleeve, when a predetermined diameter (D) of cross-wound bobbin (8) of working station (1) is reached during interruption of winding process of bobbin. A thread (9) is manufactured temporarily by a winding device (3), by appropriate control of coil frame (22) on own transportation unit of spinning machine. A movably mounted suction nozzle (11) is positioned such that the thread running into suction nozzle is transferred to a new empty case (33) supported in coil frame and the winding process is again started on empty case. An independent claim is included for a working station of open-end rotor spinning machine.