Melt Spinning Yarn Cutting Unit for Safety and Reliability
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Solution Overview
Problem
The existing melt spinning equipment faces challenges in improving workability and safety during the threading of multiple yarns from a spinning apparatus to a take-up apparatus, while also preventing damage to the cutters in the yarn breakage-treating device, especially when multiple spinning take-up apparatuses are installed.
Innovation Solution
The introduction of a cutting unit specifically designed for operators to cut bundles of yarns, which is installed in at least one of the take-up apparatuses or the yarn breakage-treating device, allowing for simultaneous cutting of multiple yarns without using traditional cutting tools, thereby enhancing safety and reducing the risk of cutter damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operators use traditional cutting tools (scissors, cutters) to cut yarn bundles, then cutting operation can be performed, but workability is poor and safety is compromised
Solution Approach 1:
The patent replaces traditional manual cutting tools (scissors, cutters) with a blade unit that is mechanically integrated into the yarn breakage-treating device. The blade unit is driven by a driving mechanism (motor, transmission) to automatically cut yarn bundles, eliminating the need for operators to manually handle cutting tools and thereby improving both workability and safety.
Solution Approach 2:
The cutting function is integrated into the yarn breakage-treating device itself, allowing the device to perform cutting operations autonomously without requiring separate manual intervention. The blade unit is automatically positioned and activated by the device's driving mechanism to cut yarn bundles during the breakage-treating process.
2Reliability
If cutters are used to continuously cut one or more yarns, then yarn cutting function is maintained, but damage to cutters and shortened life occur when cutting bundled yarns
Solution Approach 1:
The patent segments the cutting function from the continuous-cutting cutter by introducing a separate blade unit specifically designed for cutting bundled yarns. The blade unit has a different structure (single blade or pair of blades) optimized for cutting multiple yarns simultaneously, while the original cutter continues to perform its continuous cutting function, thereby preventing damage and extending the life of both cutting components.
Solution Approach 2:
The blade unit acts as an intermediary between the yarn bundle and the original cutter. Instead of the cutter directly cutting bundled yarns (which causes damage), the blade unit first cuts the bundle into smaller sections, which are then processed by the cutter. This intermediary action protects the cutter from excessive stress and extends its service life.
3Productivity
If multiple spinning take-up apparatuses operate simultaneously with fewer suction guns, then productivity is maintained, but threading operations cannot be performed at the same timing
Solution Approach 1:
The yarn breakage-treating device is given multi-functionality by integrating both the blade unit for cutting bundled yarns and the suction portion for holding cut yarns. This allows the device to perform multiple operations (cutting, holding, and preparing yarns for threading) in sequence, enabling simultaneous operation of multiple spinning take-up apparatuses even with fewer suction guns, thereby maintaining productivity while improving threading operation capability.
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 solution improves workability and safety by allowing operators to efficiently cut multiple yarns at once, reducing the strain on cutters and preventing potential damage, even when the number of suction guns is fewer than the number of spinning take-up apparatuses.
Implementation Method 1
a suction portion which holds the plurality of yarns cut by the cutter and the plurality of yarns cut by the cutting unit
Data Source
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AI summary
Melt spinning equipment 100 includes a plurality of spinning take-up apparatuses 1 and a cutting unit 5. The cutting unit is a cutting unit 5 used for an operation of cutting a plurality of yarns Y by an operator, is able to cut a bundle of the plurality of yarns Y to be threaded to a take-up apparatus 3, and is provided in at least one of the take-up apparatus 3 and a yarn breakage-treating device 4. The yarn breakage-treating device 4 includes a cutter 42 which continuously cuts one or more of the plurality of yarns Y arranged side by side in an array direction and a suction portion 44 which holds the plurality of yarns Y cut by the cutter 42 and the plurality of yarns Y cut by the cutting unit 5.