Interlacing Device Yarn Insertion Mechanism
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Solution Overview
Problem
In spun yarn take-up apparatuses, yarns often fail to be inserted into interlacing devices due to prohibition issues, leading to manual intervention and inefficiencies, as some yarns are not introduced into yarn running spaces even after prohibition cancellation.
Innovation Solution
An interlacing device with a yarn introduction system that includes a first yarn passage with an insertion slot and a second yarn passage orthogonal to the first, utilizing a swing member to apply forces in both directions, ensuring yarn insertion into the interlacing device, and a third yarn passage connected to the second, allowing yarns to reach the running space via tension after initial pressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If yarn insertion prohibition is implemented during threading, then threading to other parts can be completed, but yarns may not be inserted into slits and manual intervention is required
Solution Approach 1:
The prohibition mechanism prevents yarn insertion during the threading phase, allowing operators to complete threading to other parts first. This preliminary action ensures that the threading process is completed systematically before yarn insertion begins, resolving the contradiction between threading completion and insertion rate.
2Reliability
If multiple yarn passages are used for yarn introduction, then yarn insertion reliability is improved, but device complexity increases
Solution Approach 1:
The yarn introduction passage is segmented into multiple distinct passages: a first yarn passage extending in a first direction orthogonal to the yarn running direction, and a second yarn passage extending in a second direction orthogonal to both the first direction and the yarn running direction. This segmentation allows yarn to be guided through separate paths, improving insertion reliability by ensuring proper positioning and reducing the risk of yarn deviation or entanglement.
Solution Approach 2:
The invention introduces a three-dimensional yarn passage structure where the first yarn passage extends in one orthogonal direction and the second yarn passage extends in another orthogonal direction. This dimensional approach allows yarn to be introduced from a different spatial orientation, improving reliability by providing a more controlled insertion path while managing complexity through systematic spatial arrangement.
3Device complexity
If a common member is used for both insertion and movement functions, then device structure is simplified, but functional precision may be compromised
Solution Approach 1:
The swing member is designed to perform multiple functions: it acts as an insertion member that presses yarn from one side toward the other in the first direction to insert yarn into the first yarn passage, and simultaneously serves as a movement member that presses yarn in the second direction to move it along the second yarn passage. This multi-functionality simplifies the device structure by reducing the number of separate components while maintaining operational effectiveness through the swing member's ability to exert force in multiple directions during its swinging motion.
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 certain yarn insertion into the interlacing device, simplifies the structure by using a common member for insertion and movement, and reduces device size by swinging the member parallel to the yarn direction, enhancing operational efficiency and stability of the yarn path.
Implementation Method 1
an injection unit configured to inject air into the yarn running space
Implementation Method 2
an insertion member which presses the yarn from the one side toward the other side in the first direction to insert the yarn into the first yarn passage through the insertion slot
Implementation Method 3
a movement member which presses, in the second direction, the yarn inserted in the first yarn passage to move the yarn along the second yarn passage
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A yarn is certainly inserted into a yarn introduction passage through which the yarns is introduced into a yarn running space. A yarn introduction passage 32 through which a yarn Y is introduced into a yarn running space 31 in which the yarn Y runs includes a first yarn passage 36 which extends in the height direction, a second yarn passage 37 which is connected to the first yarn passage 36 and extends in the left-right direction, and a third yarn passage 38 which extends in the height direction and connects the right end of the second yarn passage to the yarn running space 31. A swing member 25 is swung about a shaft 44 parallel to the yarn running direction of the left side of the interlacing portion 21 so as to press the yarn Y. The yarn Y is pressed in the height direction by the swing member 25 so as to be inserted into the first yarn passage 36. The yarn Y then moves in the second yarn passage 37 on account of a component in the left-right direction of force exerted by the swing member 25 and the tension of the yarn Y itself. Thereafter, as the pressing of the yarn Y by the swing member 25 is canceled, the yarn Y moves in the third yarn passage 38 and reaches the yarn running space 31, on account of the tension of itself.