Yarn Processing Machine Suction Duct Pressure Detection
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Solution Overview
Problem
Yarn processing machines face inefficiencies due to reduced negative pressure in suction ducts, leading to operation mistakes and prolonged standby times, especially when waste yarn clogs the system, causing uneven pressure distribution and reduced suction force.
Innovation Solution
Incorporating a detection mechanism on the operation cart to monitor negative pressure and control operations based on detected values, allowing immediate action when sufficient pressure is reached and preventing operations when pressure is insufficient, along with a search mode to identify areas of pressure change for clog detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the suction device is placed at a fixed location and supplies negative pressure through a suction duct, then the system structure is simple, but the negative pressure becomes insufficient at distant locations and operation mistakes occur
Solution Approach 1:
The suction system is segmented into multiple independent suction devices positioned at different locations along the suction duct, with each device serving a specific zone. This segmentation ensures that each location receives adequate negative pressure without requiring a single complex centralized system.
Solution Approach 2:
A pressure regulation mechanism acts as an intermediary between the suction device and the operation cart, ensuring that sufficient negative pressure is delivered to the operation position regardless of distance from the suction source.
2Productivity
If the operation cart waits for negative pressure to rise throughout the entire suction duct before operating, then sufficient pressure is ensured, but operation efficiency decreases due to prolonged standby time
Solution Approach 1:
The suction device is activated in advance to build negative pressure in the suction duct before the operation cart arrives at the operation position. The system monitors pressure levels and prepares the suction environment beforehand, eliminating the need for the cart to wait during standby.
Solution Approach 2:
A pressure detection device provides real-time feedback on the negative pressure level at the operation position. This feedback enables the control system to determine when sufficient pressure has been achieved and when the operation cart can proceed, optimizing the balance between efficiency and reliability.
3Reliability
If the suction device operates continuously to maintain negative pressure throughout the suction duct, then pressure is sufficient at all locations, but energy consumption increases
Solution Approach 1:
The suction device operates periodically rather than continuously, activating only when needed to restore negative pressure levels. The system monitors pressure levels and triggers suction operations based on actual demand, reducing energy waste while maintaining adequate pressure distribution.
Solution Approach 2:
The suction system provides negative pressure locally at the operation position rather than uniformly throughout the entire suction duct. Multiple suction devices are strategically positioned to create localized pressure zones, ensuring sufficient pressure where needed while minimizing energy consumption in other areas.
4Reliability
If waste yarn clogs the suction duct, then suction force decreases and operation mistakes occur, but detecting the clog location is difficult
Solution Approach 1:
The pressure detection device provides real-time feedback on negative pressure levels at different locations along the suction duct. When a clog occurs, the system detects pressure anomalies and can trace the location by identifying where pressure deviates from expected values, enabling quick localization and resolution of clogs.
Solution Approach 2:
The system uses pressure value changes as indicators of clog conditions. By monitoring pressure variations and comparing them against normal operating ranges, the system can detect and locate clogs based on pressure profile changes rather than visual inspection.
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
Enhances operation efficiency by preventing mistakes and reducing standby times, allowing immediate operation when sufficient pressure is detected and identifying clog areas for prompt maintenance, thus improving overall system performance.
Implementation Method 1
a suction device (12) that creates a negative pressure state in the suction duct (11)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A yarn processing machine includes a plurality of yarn processing units (2) arranged side by side in an arranging direction, an operation cart (3) that is movable in the arranging direction and to execute an operation on the yarn processing units (2), and a suction duct (11) arranged along the arranging direction, wherein the operation cart (3) includes an operation member (54) adapted to be connected to the suction duct (11) when the operation cart (3) is at an operation position (A) to carry out an operation on the yarn processing unit (2) and to carry out the operation using a negative pressure in the suction duct (11), and a detection means (60) adapted to detect the negative pressure supplied from the suction duct (11) .