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Scientific use of automatic winding machines to improve production efficiency



Improving the operating efficiency of the automatic winding machine is a comprehensive indicator to measure whether the automatic winding machine is used scientifically. It can objectively reflect the quality o…

Improving the operating efficiency of the automatic winding machine is a comprehensive indicator to measure whether the automatic winding machine is used scientifically. It can objectively reflect the quality of the bobbin, whether the process parameters are reasonable, whether the workers’ operating methods are correct, whether the equipment maintenance is in place, etc.

At present, in the use of automatic winding machines in enterprises, due to the gaps in the work in the above aspects, there is a large gap in operating efficiency. Good enterprise equipment The production efficiency reaches more than 90%. Generally, it is between 80% and 85%. A few companies have only 70% or even lower. The difference in production efficiency between advanced and backward companies is about 20%. Therefore, to use the automatic winding machine scientifically, we must first grasp the important link of improving the production efficiency of the equipment. Generally, the production efficiency of the automatic winding machine should reach more than 85%. How to achieve this goal? Based on the experience of many companies, the following points are drawn.

01 Improve the bobbin quality and increase the bobbin capacity

The bobbin has fewer yarn defects and is well formed Well, when the automatic winding machine is unwinding, it can reduce unwinding, reduce end breaks, and improve the operation rate. At the same time, appropriately increasing the bobbin capacity at a certain spindle speed of spinning yarn and reducing the number of knots during winding is also a measure to improve the operating efficiency of the equipment. At present, when some cotton spinning mills increase the ring diameter from 38 mm to 42 mm when spinning 14.5 tex to 9.7 tex yarn, the bobbin capacity can be increased by 25% to 30%, and the number of knots per bobbin can be reduced. 6 or more.

02 Reasonable setting and optimization of yarn clearing curve

Production practice shows that cutting yarn from electric cleaning Defect analysis shows that 80% to 90% of yarn defects are type A and type B short slub yarn defects. Tight or loose settings for short slub yarn defects determine the shear number per 10,000 meters. Tests have proven that when the number of shears per 10,000 meters is 6 to 7 times, the single spindle operation rate can reach 85% to 86.5%. When the number of shears per 10,000 meters increases to 7.5 to 8 times, the single spindle operation rate will drop by about 2.0%. Therefore, the setting of electronic yarn clearing process parameters should comply with the following three principles: first, harmful yarn defects or foreign fibers are detected and removed; second, there are few or no harmless yarn defects or foreign fibers being mistakenly cut and removed; third, due to The reduction in efficiency caused by yarn clearing should be kept to a minimum. In addition, when using an electronic yarn clearer with foreign fiber function, a foreign fiber detection device must be installed in the opening and cleaning process to detect most foreign fibers to reduce the number of times the foreign fiber is cut on the automatic winding machine. Some factories have conducted experiments many times. After installing a foreign fiber sorting device in the blowroom process, the number of defects cut on the automatic winding machine can be reduced by 55% to 60% and the production efficiency is significantly improved. Therefore, for foreign fiber-containing With so much raw cotton, it is not advisable to rely solely on electric cleaning methods.

03 Strengthen the training of turners and correctly implement the operating methods

Due to the technical content of the automatic winding machine High and fast running speed, the machine operators must be familiar with the machine’s performance and correctly understand the operation essentials of each component. Therefore, the machine operators must undergo more than 20 hours of training before taking up the job. Some factories have done analysis and measurement. The length of operator training and the level of operating proficiency have a great impact on production efficiency. For example, one operator who has been trained for 20 hours and has been working for more than 6 months has reduced downtime due to skilled operation and the equipment operation efficiency has reached more than 85%, while the other has been rushed to work after 6 hours of training and the equipment has been running for 2 consecutive months. The efficiency is only 78%, and the difference between the two is 7%, so the training of gear workers cannot be ignored.

04 Do a good job in temperature and humidity control and adjustment in the winding workshop

The automatic winding machine is Using air splicing and electronic yarn clearing technology, the requirements for workshop temperature and humidity are stricter than those of ordinary winding machines. If the relative humidity in the workshop is too low, the yarn channel will become astringent and the cohesion force will decrease, which will not only increase hairiness, but also cause sudden yarn defects. Therefore, in addition to controlling the spinning process, especially the two moisture regain control points of cotton laps and rovings, a certain number of air changes and appropriate temperature and humidity conditions must be maintained during the winding process. The temperature should be controlled at 22 ℃ ~ 30 ℃. The relative humidity is controlled at 62% to 72%. In particular, capacitive electronic yarn clearers are more sensitive to changes in temperature and humidity. Improper control will increase winding breakage and miscutting, affecting production efficiency. Therefore, the understanding that the winding workshop does not need to install air-conditioning equipment is incomplete.

05 Reasonably control the operating speed of the automatic winding machine

The speed of the automatic winding machine is fast , high yield, but will increase hairiness to a certain extent. It is necessary to pass tests, and on the basis of maintaining the key components of the yarn channel, control the hairiness to a minimum, appropriately increase the winding speed, and maximize the production efficiency of the automatic winding machine. When Jiangsu White Rabbit Group produces 9.7 tex combed yarn, it increases the winding speed from 1200 m/min to 1600 m/min. The number of hairiness above 3 mm can still be controlled at 80 fibers/(10 m), while the production efficiency increases by 30 About %, which shows that they have done a good job in the maintenance work of the automatic winding machine and the quality control of each spinning process, creating good conditions for the speed increase of the automatic winding machine. </p

This article is from the Internet, does not represent Composite Fabric,bonded Fabric,Lamination Fabric position, reproduced please specify the source.https://www.tradetextile.com/archives/28753

Author: clsrich

 
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