It is very important to choose a multi-roller opening machine, which has a decisive influence on the effect of opening

      In the opening theory, it is very important to choose multi-rod opening for the licker roller parts of the opening machine, and it also has an important or even a decisive influence on the effect of the opening. Most countries have a licker roller diameter of about 250mm, but there are some The diameter size of the national thorn reel is unique. For example, the C40 opener produced by Marzuoli in the 1970s had a licker roller diameter of 228mm, and the later C300, CX400, and C501 used a 350mm licker roller diameter, which is the largest among known openers. The diameter of the Polish CZ-690 licker roll is 236mm, the Hollingsworth of the United States uses 229mm, the Japanese CK7C uses 208mm, and the Chinese green machine 1182 has adopted 200mm. The contemporary out-of-production openers use small thorn reels of OK903 and FA225. The opener, they use a four-licker roller system, and the diameter of the three licker rollers is 172.5mm, which is the smallest among known openers. The diameter of the licker roller has an impact on the following problems: 1) It has an effect on the carding and transfer of fibers. Generally, when the diameter of the licker roller is small and the rotation speed is large, the fiber separation and carding effect is better, and it is also conducive to fiber transfer (especially when combing needles are used). This may be the reason why DK903 and FA225 adopt small diameter licker rollers. . (2) It has an impact on the size of the cleaning area. If the diameter of the thorn reel is large, the cleaning area will be large, which is beneficial to the arrangement of the cleaning area and the cleaning. For example, the diameter of the Mazzoli C501 opener is larger, which is 350mm , It arranges three groups of dust removal knives with cleaning suction nozzles, two deflection blades, and two combing plates under the licker roller. It is said that the cleaning effect is better, and 90% of the cleaning work can be completed in this area. (3) It has an influence on the centrifugal force. Generally, when the diameter of the licker roller is small, the centrifugal force is larger at the same linear speed, which is beneficial to fiber transfer and impurities removal.