Clamping Device with Switch Element for Yarn Layer Compensation
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Solution Overview
Problem
Existing drawing-in machines require manual and time-consuming layer compensation, leading to potential yarn separation errors and inefficiencies, especially when the clamping device moves during the drawing-in process.
Innovation Solution
An optimized clamping device with a switch element that allows for automatic adjustment of the yarn layers relative to the separation device, enabling simultaneous or independent movement of the clamping rails along the longitudinal direction for precise layer compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual layer compensation is used, then the drawing-in process can be completed, but the operation time increases and productivity decreases
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated control system that uses sensors to detect yarn layer positions and automatically actuates the clamping rails to compensate for layer offsets, eliminating the need for manual intervention while maintaining precision
Solution Approach 2:
The clamping device performs self-compensation by automatically detecting its own state through integrated sensors and adjusting the clamping rails without external manual operation, enabling the system to correct layer misalignment autonomously during the drawing-in process
2Productivity
If the clamping device moves during drawing-in, then drawing-in performance is improved, but the risk of yarn separation errors increases
Solution Approach 1:
The patent implements feedback control by using sensors to continuously monitor the position of yarn layers and clamping rails during movement, comparing actual positions against target positions, and automatically adjusting the clamping rails to maintain precise alignment and prevent yarn separation errors while allowing the device to move
Solution Approach 2:
The system performs preliminary positioning and alignment adjustments before the drawing-in process begins, pre-compensating for expected layer offsets and ensuring that the clamping rails are correctly positioned relative to the yarn layers before movement starts, thereby preventing errors during dynamic operation
3Productivity
If automatic layer compensation is implemented, then productivity increases, but device complexity increases
Solution Approach 1:
The patent designs the clamping rails and control system to serve multiple functions: they clamp the yarn layers, compensate for layer offsets, and maintain alignment during movement, eliminating the need for separate dedicated components for each function and reducing overall system complexity while achieving automatic compensation
Solution Approach 2:
The patent combines the clamping function and compensation function into a single integrated control system, where the same actuation mechanism that clamps the yarn layers also performs the compensation adjustment, reducing the number of separate components and simplifying the overall device structure
Data Source
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AI summary
This clamping device comprises a frame structure (10) movable along a longitudinal direction with respect to a drawing-in unit of a drawing-in machine, a first clamping rail (20A) and a second clamping rail for clamping a first yarn layer (L1), secured with the frame structure (10) along the longitudinal direction, a third clamping rail (22A) and a fourth clamping rail for clamping a second yarn layer (L2), connected to the frame structure (10) through a slide link (88) and movable with respect to the frame structure (10) along the longitudinal direction (LD). A switch element (100) longitudinally secured to the third clamping rail (22A) is movable between a first position, where it longitudinally secures the third clamping rail to the first clamping rail (20A), and a second position, where it allows a relative longitudinal movement of the third clamping rail relative to the first clamping rail and does not cooperate neither with the frame structure nor with the first and second clamping rails.