Electronic Yarn Changing Device Simplifies Circular Knitting
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Solution Overview
Problem
Conventional electronic yarn changing devices for circular knitting machines have complex structures due to the use of multiple pneumatic tanks and linking rod structures, which complicates the overall design and functionality.
Innovation Solution
An electronic yarn changing device with at least two driving units, two impelling plates, and two yarn feeding units, where each driving unit is individually controlled by an electronic signal, and the impelling plates are connected to pushing portions that enable one-dimensional and two-dimensional motions to simplify the yarn dispensing and withholding operations, reducing the structural complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple pneumatic tanks and linking rod structures are used to control yarn feeding plates, then the yarn feeding function is achieved, but the driving structure becomes complex and the overall structure cannot be simplified
Solution Approach 1:
The patent extracts and eliminates the complex linking rod structures from the conventional multi-pneumatic-tank system. By using independent pneumatic tanks directly connected to each yarn feeding plate, the intermediate transmission mechanisms (linking rods) are removed, simplifying the driving structure while maintaining full control capability over multiple yarn feeding plates
Solution Approach 2:
The patent segments the driving system into independent pneumatic tanks for each yarn feeding plate. Instead of using a centralized complex mechanism, each plate has its own dedicated pneumatic tank, allowing independent control and simplifying the overall structure by distributing the control functions across multiple simple, identical units
Data Source
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AI summary
An electronic yarn changing device (10) for a circular knitting machine includes at least two driving units (11), at least two impelling plates (12) respectively connected to the driving units (11), and at least two yarn feeding units (13). The impelling plates (12) are impelled by the respective connected driving units (11) to perform a one-dimensional motion. The yarn feeding units (13) are arranged side by side, and are each provided sequentially with a yarn feeding plate (14), a yarn clamping plate (15), a mobile blade plate (16) and a fixed blade plate (17). The yarn clamping plate (15) includes a plurality of guide columns (151) disposed correspondingly to the yarn feeding plate (14). The yarn feeding plates (14) are respectively pushed by the corresponding impelling plates (12) to perform a two-dimensional motion due to the plurality of guide columns (151). The mobile blade plates (16) are also respectively pushed when the corresponding impelling plates (12) perform the one-dimensional motion, and individually perform a one-dimensional motion once being pushed.