Discussion on the key aspects of rubber roller manufacturing and processing
ubber rollers and aprons are important drafting devices for spinning. The rubber roller and the roller, the apron and the upper and lower pins form two pairs of elastic grip jaws to complete the holding and drawing of the fibers.
Relationship between production control and rubber roller apron quality
The influence of the hardness, thickness, elasticity, life cycle, dispersion and rubber quality of the rubber roller and rubber ring on the spinning quality is often the focus of academic papers or academic seminars. It is well known that rubber will age with the prolonged use time, and the wear during operation will cause the surface of the rubber roller to be uneven, the hardness is increased, the elasticity is decreased, and the unevenness of the apron is intensified, resulting in a decrease in the dry C value of the cotton yarn, and various variations. The CV value increased, the details, thick sections, and neps gradually increased, and harmful yarn defects at all levels increased significantly. Extending the service life of rubber rollers and aprons is a major issue that manufacturers need to solve. It can increase the service life of rubber materials by improving the quality and processing technology of rubber materials, reduce the unevenness and wear generated during the spinning process, and prevent different individuals and batches. There is a large difference in quality between the rubber roller and the rubber ring.
After investigating the use of new and old rubber rollers and rubber rings in the same rubber factory for hundreds of textile mills for a long time, a large number of statistics and analysis were carried out on rubber rollers and aprons with wear, scratches, grooves and irregularities. In the Nanyang of Henan Province, five spinning mills were randomly selected. Among them, 100% of the rubber rollers and rubber rings in each of the four spinning mills were related to human factors. The relative number of mid-shift and night shift injuries was relatively high. Only one textile factory glue 98% of the damage of rollers and aprons is caused by human factors; the data analysis of dozens of textile factories in Xinjiang also shows that the proportion of rubber roller and rubber ring damage caused by human factors reaches 100%. Therefore, the textile mill strengthens the management of textile equipment, reduces the damage and damage of the rubber roller and the rubber ring, and achieves the purpose of reducing the cost and improving the overall quality consistency of the cotton yarn. It has also been found that more than 95% of sporadic yarn defects related to rubber roller and apron problems are caused by human factors, especially night shifts. The number of damages and damages is 5 to 10 times that of white shifts, which should be 4 hours. The textile mills that operate and produce strengthen the management of midnight shifts, and develop a stricter and more reasonable system than the white shifts to manage the medium and night shift spinning equipment and control the quality of cotton yarn.
Rubber roller, apron damage, groove marks, wear, unevenness, oil stains, cracks, rubber hose slippage from the bearing, rubber ring breakage, etc., 99% are caused by the lack of management in the production control process, so the production workshop should Formulate the transfer of the rubber roller and the apron, the operation class and the maintenance maintenance handover system. Analysis of the causes of rubber roller, apron damage, damage and the establishment of a reward and punishment system is the key to effectively prevent human factors from causing damage and damage to rubber rollers and aprons; in addition, the current textile mills have difficulty in survival, difficulty in recruiting workers, and a large number of new workers. The existence of many problems such as short time, as well as the actual situation of human factors damage, damage to rubber rollers and aprons, and the rational use and treatment of rubber rollers and rubber rings in the production workshop are the key points to protect the quality of rubber rollers and aprons. It is also the key to reducing the production cost of textile mills and improving the consistency of cotton yarn quality.
Effect of winding treatment method on the quality of rubber roller
The rubber roller and the apron winding are mainly caused by the difference in the quality of the rubber material, the antistatic treatment is not in place, the processing rubber roller and the apron process are poorly controlled; in addition, the spinning raw material has sugar, high wax content and air conditioning. The temperature and humidity control is poor, and the management of the workshop is not in place. The management of the production workshop is not in place, which is also the key reason for the scattered winding of rubber rollers and rubber rings. Generally speaking, the large area rubber roller and rubber ring winding of the textile factory is caused by the rubber quality and the temperature and humidity control of the textile factory air conditioner, and the sporadic winding is basically caused by the internal management of the spinning mill. The treatment method after the rubber roller and the rubber ring are wounded is the main factor affe
Ensuring the quality of the spinning How to manage and maintain the rubber rollers?
Technology | Ensuring Spinning Quality How to manage and maintain the rubber roller?
Rubber roller is an important drafting component, and its performance and management level are closely related to yarn quality. The manufacturer should not only pay attention to its production process and grinding precision. The subsequent use, management and maintenance of the rubber roller are also very important to ensure the excellent and stable spinning performance of the rubber roller. The two should complement each other to achieve a stable spinning quality level.
Regional management of rubber rollers
The types of hoses used in our factory include American Armstrong J463 hoses, domestic disposable hoses, domestic micro-treatment hoses, double-layer hoses, etc. Before the implementation of regional management, the rubber rollers are required according to the variety, because the variety features are small. Batch, multi-variety, fast delivery, variety change faster, rubber roller needs to change the parking space back and forth, resulting in the same type of rubber roller in the front of the various diameters mixed, the diameter difference between the front and rear rubber rollers varies with the variety, so The consequences are: the rubber roller has different grinding cycles, different times of grinding, and the hardness difference of the rubber roller is large, which causes the pressure difference of some machines of the same variety, and the problem of hard head often occurs, especially after cleaning the rubber roller diameter. The problems caused by the differences are more serious, life is difficult, and the quality of yarn is unstable. Therefore, each time after cleaning the car, the cradle pressure must be re-adjusted, which not only causes inconvenience to the maintenance work, but also affects the yarn yield. Moreover, due to the confusion in the use of the rubber roller, the difference between the spindles is increased, and the fine yarn is affected. The overall level of CV values.
In order to stabilize the quality of yarn and solve the problem of life fluctuation caused by unstable pressure, our factory has divided the rubber roller used by the variety and model. The rubber roller is basically maintained in the same diameter and the same hardness in a certain area, which fundamentally solves the problem of inconsistent pressure of the same variety, improves the level of the same variety and reduces the difference of the ingot. The specific approach is:
1 According to the total number of ingots, the rubber roller is divided into four areas, and the rubber roller does not change the position of the area due to the change of the variety. After the area is divided, the diameter of the rubber roller in each area remains basically unchanged;
2 After the rubber roller is managed in a sub-area, the diameter of the front rubber roller is changed to be used after the rubber roller is small, and the rubber roller is also divided into corresponding regions to ensure that the diameters of the rubber rollers are basically the same.
3 The number of honing of the rubber roller has also been adjusted accordingly. In accordance with the principle of hard grinding and less grinding, the imported rubber roller is ground once every 8 months, and the domestic rubber roller is ground once every 4 months, and with the extension of the use time. The time of tempering is appropriate and short. From July to September, it is the high temperature and high humidity season. The number of times of rubber roller grinding depends on the life and spinning conditions on the car.
After the rubber roller zoning management is realized, the pressure difference between the same type of ingots is significantly reduced, and the yarn quality level is also significantly improved. Taking the CJ 14.5 tex variety as an example: before the rubber roller regionalization management is implemented, the CV value of the strip is between 13.4% and 13.7%, and the yarn quality is 25% to 50% in the 2001 Uster bullet; After the roller regionalization management, the CV value of the strip has been stable within 25% of the Uster 2001 bulletin; compared with before the rubber roller is not regionalized, the strip CV value is increased by nearly one level. The pressure is relatively stable, the problem of hard head is effectively controlled, and the fluctuation of life is significantly reduced.
Storage, use and maintenance of rubber rollers
1 The well-polished rubber roller should avoid the light when it is stored, avoiding the aging of the rubber surface of the light-receiving surface and affecting the quality of the yarn.
2 Put the quality of the rubber roller on the front and back of the car, and strengthen the inspection and assessment. The rubber roller is inspected beforehand on the machine to ensure that all the rubber rollers on the car are qualified. The maintenance team will be handed over to the rubber roller in front of the rubber roller. After
