The quality of the components of the spinning frame and the reasonable matching are the key factors that directly affect the quality and output of the spinning machine. Let me talk about my personal views on domestic spinning components.
The cradle: China adopts the “V†type drafting country, but the advantage of the “V†type drawing spinning process is not obvious, and it is not suitable for the knitting yarn spinning process. The linear drafting is more adaptable than the "V" type drafting, and the direction of the knitting yarn is close. Internationally, SKF draws PK series spring pressurization and Rieter R2P drafting. Among them, Pakistan is mainly based on SKF drafting spring press weaving process. India's Rieter R2P drafting pneumatic pressure knitting yarn process is Mainly, the quality and manufacturing level of China's YJ2 (SKF type) cradle is close to the level of the SKFPK series.
On-sale: There are two main types of SX2 series sold in China. One is the A3 steel plate, and the other is the carbon production. Carbon sales have certain advantages in terms of spinning, but the rigidity is not as good as the steel plate. Spinning-type fibers are advantageous in that they are sold on carbon as a whole, and the long-spinning fibers are preferably sold on steel plates with better rigidity.
Leather roller and apron: The quality and stability of the domestic leather roller are basically close to the ArmStrong leather roller. The domestic leather roller can fully meet the current spinning requirements in China. However, from the perspective of compact spinning, ArmStrong's 63-degree leather roller has advantages in yarn quality, and further research, testing and improvement are needed.
Rolla: In recent years, the quality of China's Rolla has improved qualitatively, especially in reducing and controlling the mechanical waves of Rolla, which basically reached and exceeded the international advanced level. In the long-term spinning process, it is critical to control the roller mechanical waves at a relatively stable level.
Top roller bearing: The SL1 series top roller bearing has a relatively low rotational speed relative to the bearing. The key is the control of the clearance. It cannot be too large or too small. It covers the clearance of the double rubber roller and the rubber roller coated with the aluminum bushing. The play is not the same. The medium iron bar coated with a composite material composed of carbon fiber and glass fiber has an effect on improving the yarn quality. The domestic top roller bearings can fully meet the requirements of spinning.
Hanging ingot: At present, the main problem of the hanging spindle is that the braking torque should have a corresponding braking torque depending on the number of spinning counts. The same braking torque can be used for both 10 yarns and 100 yarns. For example, it is preferable to use about 4 grams of braking torque for spinning about 40 yarns. It is recommended that the manufacturer of the hanging spindle should set the braking torque into different braking torques separately, and distinguish them by the color of the hanging spindle. India has a four-speed hanging spindle, and the corresponding braking torque is different for each gear. This design is the most convenient for spinning.
Disbursed: The new type of sales has been improved on the basis of the SKF section. From the perspective of the spinning effect, it has certain effects on certain varieties, and the effect on some varieties is not obvious, but it does not reduce the spinning quality.
Interval block: The main problem is that the block block is relatively large, and the 0.5 mm one gear can no longer meet the spinning requirements. The 0.25 mm one gear is the most suitable.
Roller bearing: The LZ series roller bearing produced in China is similar to the INA roller bearing, and the level is basically close to the SKF roller bearing.
Guide plate and guide hook: The key is the aperture of the guide hook. The diameter of the guide hook used in China is generally 3 mm to 3.5 mm, and the guide hole with a diameter of 2.2 mm is used in a small part. India and Pakistan spin about 40 yarns with a 1.5 mm diameter yarn guide hook. I think if spinning more than 30 yarns, it is advantageous to use a 1.5 mm aperture yarn guide hook.
Roller: China usually uses a 250 mm galvanized iron roll and weighs about 1.5 kg. At present, most of the international use of plastic scrolling wheel, the weight is only about 600 grams, and the static balance is good. The materials used are ABS, reinforced nylon, and glass fiber or carbon fiber. This type of reel has high strength, good antistatic performance, light weight and low moment of inertia. The plastic rolling disc is very effective in reducing the vibration generated by the high-speed operation of the machine, and is the future development direction.
The cradle: China adopts the “V†type drafting country, but the advantage of the “V†type drawing spinning process is not obvious, and it is not suitable for the knitting yarn spinning process. The linear drafting is more adaptable than the "V" type drafting, and the direction of the knitting yarn is close. Internationally, SKF draws PK series spring pressurization and Rieter R2P drafting. Among them, Pakistan is mainly based on SKF drafting spring press weaving process. India's Rieter R2P drafting pneumatic pressure knitting yarn process is Mainly, the quality and manufacturing level of China's YJ2 (SKF type) cradle is close to the level of the SKFPK series.
On-sale: There are two main types of SX2 series sold in China. One is the A3 steel plate, and the other is the carbon production. Carbon sales have certain advantages in terms of spinning, but the rigidity is not as good as the steel plate. Spinning-type fibers are advantageous in that they are sold on carbon as a whole, and the long-spinning fibers are preferably sold on steel plates with better rigidity.
Leather roller and apron: The quality and stability of the domestic leather roller are basically close to the ArmStrong leather roller. The domestic leather roller can fully meet the current spinning requirements in China. However, from the perspective of compact spinning, ArmStrong's 63-degree leather roller has advantages in yarn quality, and further research, testing and improvement are needed.
Rolla: In recent years, the quality of China's Rolla has improved qualitatively, especially in reducing and controlling the mechanical waves of Rolla, which basically reached and exceeded the international advanced level. In the long-term spinning process, it is critical to control the roller mechanical waves at a relatively stable level.
Top roller bearing: The SL1 series top roller bearing has a relatively low rotational speed relative to the bearing. The key is the control of the clearance. It cannot be too large or too small. It covers the clearance of the double rubber roller and the rubber roller coated with the aluminum bushing. The play is not the same. The medium iron bar coated with a composite material composed of carbon fiber and glass fiber has an effect on improving the yarn quality. The domestic top roller bearings can fully meet the requirements of spinning.
Hanging ingot: At present, the main problem of the hanging spindle is that the braking torque should have a corresponding braking torque depending on the number of spinning counts. The same braking torque can be used for both 10 yarns and 100 yarns. For example, it is preferable to use about 4 grams of braking torque for spinning about 40 yarns. It is recommended that the manufacturer of the hanging spindle should set the braking torque into different braking torques separately, and distinguish them by the color of the hanging spindle. India has a four-speed hanging spindle, and the corresponding braking torque is different for each gear. This design is the most convenient for spinning.
Disbursed: The new type of sales has been improved on the basis of the SKF section. From the perspective of the spinning effect, it has certain effects on certain varieties, and the effect on some varieties is not obvious, but it does not reduce the spinning quality.
Interval block: The main problem is that the block block is relatively large, and the 0.5 mm one gear can no longer meet the spinning requirements. The 0.25 mm one gear is the most suitable.
Roller bearing: The LZ series roller bearing produced in China is similar to the INA roller bearing, and the level is basically close to the SKF roller bearing.
Guide plate and guide hook: The key is the aperture of the guide hook. The diameter of the guide hook used in China is generally 3 mm to 3.5 mm, and the guide hole with a diameter of 2.2 mm is used in a small part. India and Pakistan spin about 40 yarns with a 1.5 mm diameter yarn guide hook. I think if spinning more than 30 yarns, it is advantageous to use a 1.5 mm aperture yarn guide hook.
Roller: China usually uses a 250 mm galvanized iron roll and weighs about 1.5 kg. At present, most of the international use of plastic scrolling wheel, the weight is only about 600 grams, and the static balance is good. The materials used are ABS, reinforced nylon, and glass fiber or carbon fiber. This type of reel has high strength, good antistatic performance, light weight and low moment of inertia. The plastic rolling disc is very effective in reducing the vibration generated by the high-speed operation of the machine, and is the future development direction.
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