Solutions to card clothing impediments in carding machines

The fallen debris is not discharged in time and enters the main carding area and is embedded in the cover card clothing. As an important part of the carding machine, the licker-in roller mainly removes large impurities, cotton seed shells, sawdust, etc. After the fiber layer enters the cylinder carding area, it mainly removes fine impurities and dust. The post-noil rate should be determined based on the quality requirements of the finished yarn and the impurity content of the cotton lap or feed cotton layer. If the raw material contains too much impurities, the amount of waste should be increased accordingly.

Carding machine

In order to avoid the embeddedness of card clothing, we analyze the causes of embeddedness As follows: The cotton cleaning and impurity removal efficiency does not meet the requirements. When the impurity content of the cotton roll is too high, it is easy for a lot of cotton flow that has not been effectively removed to enter the cylinder and the main carding area of ​​the cover, causing embedded impurities. The raw cotton picked by the machine contains a lot of impurities. The noil rate in the blowroom process should be adjusted appropriately to make the larger impurities fall off as early as possible and reduce the impurities in the cotton rolls (generally to avoid It is advisable to exceed 1.2%). Improper process settings at the rear of the licker-in or improper use of some machine parts at the rear. If the card clothing of the licker-in is seriously damaged and not sharp, and the dust collector is not smooth and straight, some impurities that should be discharged from the rear of the licker-in are not effectively removed and enter the main carding area of ​​the cylinder cover for further decomposition, increasing the Possibility of inclusion. The sharpness of the licker-in card clothing and the pre-carding plate, the smoothness and straightness of the dust collector and guide plate and the reasonable configuration of the process must be fully guaranteed to ensure effective removal of impurities, reduce the burden on the main carding area, and avoid Card clothing inlaid.

Some people think that to strengthen carding, the denser the card clothing, the better. In fact, the denser the card clothing, the greater the damage to the fibers. If the yarn number to be spun is relatively thick, the impurity content of the raw material is inherently high, and the selected card clothing should not be too dense (especially the transverse tooth density). The denser the card clothing is, the smaller the cottonseed shells and sawdust impurities will become, the easier it will be to become embedded between the two needle teeth. The flat card clothing is not sharp and cannot form effective carding with the cylinder card clothing. It is difficult to catch some impurities such as flat flowers that should be discharged, which increases the impurity of the cylinder card clothing. The rear upper cover should be as straight as possible, but the distance should not be too small. If it is too small, the raw materials entering the working area of ​​the cylinder cover will be squeezed by the cover, which will increase the inclusion of cylinder card clothing. When the distance between the lower guide plate of the high-speed brush roller and the high-speed brush roller on the stripping roller is too large, it is easy to cause some knots.It was re-thrown onto the dolphin, adding a cylindrical embedment. By doing the above points well, we can basically prevent the phenomenon of embeddedness on the card clothing, so that the carding function of the card clothing can be effectively exerted, and the product quality can be improved.