Thread Feeder Control Element for Textile Splicing
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Solution Overview
Problem
Existing thread connecting devices in textile machines often result in faulty or inferior thread connections due to uncontrolled thread feeding and incorrect positioning of thread ends, leading to poor quality and incomplete splices.
Innovation Solution
A thread connecting device with a deflection means on the air distributor body, ensuring the thread ends are cut to length and safely guided into holding and opening tubes, featuring a reversible and adjustable control element with a deflection mechanism that prevents uncontrolled thread movement, utilizing a hook-like or contour design to ensure proper alignment and braking of the thread ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the thread feeder is mounted raised on the control element, then the thread feeding mechanism has sufficient clearance and accessibility, but the thread feeder may tilt radially inwards or outwards over time, resulting in poor thread connection quality or contact with other components causing wear and damage
Solution Approach 1:
The control element is designed to be rotatably mounted on the air distributor body, allowing it to rotate into different positions (e.g., 45 degrees) to accommodate thread feeding operations. This dynamic positioning capability enables the thread feeder to maintain proper alignment while providing sufficient clearance, preventing both tilting issues and contact with other components.
Solution Approach 2:
The system allows adjustment of the control element's rotational position as a variable parameter. By changing the angular position of the control element, the thread feeder can be optimally positioned for each operation, ensuring reliable thread connections while maintaining accessibility and preventing mechanical interference.
2Productivity
If the thread ends are not precisely positioned in the splicing prism, then the splicing process is simpler and faster, but the yarn splices will have inconsistent appearance and strength
Solution Approach 1:
The control element is equipped with switching cams that perform preliminary positioning actions on the thread ends before the actual splicing operation. These cams pre-align the threads in the splicing prism, ensuring precise positioning is achieved automatically as part of the splicing cycle, thus maintaining both speed and quality.
Solution Approach 2:
The mechanism incorporates automatic feedback through the switching cam system that monitors and adjusts thread positioning during the splicing cycle. The cam profiles are designed to detect thread position and make real-time adjustments, ensuring consistent yarn splice quality without requiring manual intervention or slowing down the process.
3Area of stationary object
If the thread feeder is positioned far from the splicing prism, then there is sufficient space for thread manipulation, but the distance between thread feeders becomes difficult to control and maintain
Solution Approach 1:
The control element rotates on a fixed orbital path around the splicing prism, maintaining a constant radial distance. This dynamic rotation allows the thread feeder to access different positions for thread manipulation while the fixed orbital radius ensures the distance from the splicing prism remains precisely controlled throughout the entire cycle.
Solution Approach 2:
Instead of moving the thread feeder linearly away from the splicing prism, the system uses rotational movement in a different dimension (angular position). This allows sufficient manipulation space to be achieved through radial positioning while maintaining a constant, precisely controlled distance from the splicing prism center.
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 design ensures reproducible, high-quality thread connections by preventing uncontrolled thread shooting and ensuring thread ends are properly sucked into the tubes, reducing the occurrence of faulty or incomplete splices and allowing for easy adjustment of the thread feeder distance without additional tools.
Implementation Method 1
a splicing prism which has a splicing channel which can be pressurised with compressed air
Implementation Method 2
a suction nozzle retrieves the thread end of the so-called upper thread
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a thread joining device 19 for a work station 2 of a textile machine 1 producing coils, comprising an air distributor body 24, which is equipped with connection bores 27 for compressed air lines, receiving bores 25 for holding and dissolving tubes 26 and a splicing prism 28, which has a splicing channel 29 that can be pressurized with compressed air, wherein at least one rotatably mounted control element 30, 31, which can be actuated by an individual drive, is arranged on the air distributor body 24, by means of which the thread treatment devices arranged at a distance from the splicing prism 28, in particular the thread cutting devices 41, the thread clamping devices 42 and/or the thread feeders 37, can be controlled as required.According to the invention, the thread feeder 37 is designed such that a deflecting means 44, 45 for guiding the thread 43, which is deflected by the thread feeder 37 and cut to length by the thread cutting device 41, is arranged on the circumference of the air distributor body 24 between the thread feeder 37 connected to the control element 30, 31 and the splicing prism 28 or the holding and dissolving tubes 26, is arranged, that the distance between the thread feeders 37 on the control element 30, 31 corresponds to the outer diameter of the splicing prism 28, and that the control element 30, 31 comprising the thread feeders 37 is reversibly driven and adjustable in the area of the splicing prism 28.