Textile Winding Suction Device for Thread Transfer
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Solution Overview
Problem
The existing thread suction devices in cross-wound bobbin production workstations are complex and prone to faults, making it difficult and time-consuming to transfer a lower thread from a pay-off bobbin to an empty take-up bobbin during batch changes.
Innovation Solution
A thread suction device with a flexible slide and a controlled pneumatic system, where the slide has a thread receiving opening that can position in front of the suction opening, allowing for safe and efficient transfer of the lower thread into the suction device and subsequent relocation into the take-up bobbin, using a drive device like a lever linkage or stepper motor for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a complex thread suction device with multiple movable parts is used, then the thread transfer capability is improved, but the device complexity and fault probability increase
Solution Approach 1:
The thread suction device is segmented into a fixed suction device portion and a movable slide portion. The slide can be positioned in different locations: in front of the suction opening for thread transfer, and at the rear for clearing the path. This segmentation allows the device to perform multiple functions with a simpler overall structure.
Solution Approach 2:
The slide is designed to be movable along the thread guide channel, transitioning between a front position for receiving and transferring threads, and a rear position for clearing the thread path. This dynamic positioning capability enables the device to adapt to different operational phases without requiring complex multi-component mechanisms.
2Manufacturing precision
If the thread suction device has multiple movable components, then the thread transfer precision is improved, but the reliability of the device decreases
Solution Approach 1:
By separating the suction device into fixed and movable portions, the invention reduces the number of interconnected movable components. The slide moves independently along a guided path, which simplifies the mechanical structure and reduces potential failure points while maintaining precise thread transfer capability.
Solution Approach 2:
The movable slide is extracted as a separate, independently controlled component from the traditional complex suction device. This extraction allows for simpler control mechanisms and reduces the interdependence of components, thereby improving reliability while maintaining transfer precision.
3Device complexity
If the thread suction device is stationary, then the device complexity is reduced, but the productivity during batch changes decreases
Solution Approach 1:
The slide is designed to move dynamically between front and rear positions along the thread guide channel. During batch changes, it moves to the front to receive and transfer threads, then retreats to clear the path. This dynamic behavior enables faster batch changes while keeping the overall device structure relatively simple.
Solution Approach 2:
The slide can be positioned in advance at the front of the suction opening, ready to receive the lower thread from the pay-off bobbin. This preliminary positioning reduces the time required during actual batch changes, thereby improving productivity without requiring complex mechanisms.
4Ease of operation
If the slide is positioned at the rear of the suction device, then the thread path clearance is improved, but the thread transfer efficiency decreases
Solution Approach 1:
The slide dynamically transitions between rear and front positions based on operational requirements. When positioned at the rear, it clears the thread path for smooth thread feeding. When moved to the front, it efficiently receives and transfers the lower thread. This dynamic positioning optimizes both clearance and transfer efficiency at different operational phases.
Solution Approach 2:
The slide performs periodic movement between rear and front positions in synchronization with the winding process and batch changes. This periodic action ensures that the thread path is cleared when needed while maintaining high transfer efficiency during thread transitions, optimizing overall system performance.
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 secure and efficient transfer of the lower thread into the take-up bobbin, reducing downtime during batch changes and allowing for quick reoperation of the workstation, with the thread being centered and easily accessible for personnel or automated pickup.
Implementation Method 1
a suction opening (28) that can be subjected to negative pressure and a flexible slide (7) that can be controlled in a defined manner, the slide (7) being movably mounted in such a way that the thread receiving opening (20) allows a controlled pneumatic transfer of a supplied lower thread
Data Source
Figure 1
Figure 2
Figure 3~4b
AI summary
The invention relates to a workstation (1) of a textile machine for creating cross-wound spools. The workstation comprises a winding device (4). The winding device (4) is provided with a bobbin framework (11) installed in a pivoted way and for a rotary installation of a cross-wound spool casing pipe (40) of a winding bobbin (5), a roller (34) and a yarn absorbing device (21), wherein the winding bobbin (5) is supported on the roller (34) during winding; the yarn absorbing device (21) has an upper setting plate (22) and a lower setting plate (23) capable of being movably installed. According to the invention, the yarn absorbing device (21) has a suction opening (28) filled with negative pressure and a flexible slide member (7) configured to be controlled in a limited way and having a yarn receiving opening (20).