How to maintain the circular knitting machine daily to maximize its service life? A complete analysis in one article!
Daily maintenance of circular knitting machines
Daily maintenance
A. In the morning, afternoon and evening shifts, the fibers (flying flowers) attached to the yarn frame and the machine must be removed to keep the knitting parts and the pulling and winding mechanism clean.
B. When changing shifts, check the active yarn feeding device to prevent the yarn storage device from being blocked by flying flowers, which will cause inflexible rotation and cause defects such as horizontal roads on the surface of the fabric.
C. Check the automatic stop device and the safety gear protective cover in each shift. If there is any abnormality, repair or replace it immediately.
D. When changing shifts or patrol inspections, it is necessary to check whether the large plate and various oil circuits are unobstructed.
Weekly maintenance
A. Clean the yarn feeding speed regulating disk and remove the flying flowers accumulated in the disk.
B. Check whether the belt tension of the transmission device is normal and whether the transmission is stable.
C. Carefully check the operation of the pulling and winding mechanism.
Monthly maintenance
A. Remove the triangle seat and remove the accumulated flying flowers.
B. Check whether the wind direction of the dust removal device is correct and remove the dust on it.
C. Remove the flying flowers in the electrical accessories and repeatedly check the performance of each electrical accessory, such as the automatic stop system, safety system, etc.
Half-year maintenance
A. Remove all the needles and sinkers of the knitting circular machine, clean them thoroughly, and check whether there is any damage. If there is any damage, replace them immediately.
B. Check whether the oil circuits are unobstructed and clean the oil injection device.
C. Clean and check whether the active yarn feeding mechanism is flexible.
D. Clean the flying flowers and oil stains of the electrical system and repair it.
E. Check whether the waste oil collection oil circuit is unobstructed.
Maintenance of the knitting mechanism of the knitting circular machine
The knitting mechanism is the heart of the circular machine. It directly affects the quality of the product. Therefore, maintenance of the knitting mechanism is crucial.
A. After the circular knitting machine has been running normally for a period of time (the length of time depends on the quality of the equipment and the knitting materials), the needle groove needs to be cleaned to prevent dirt from entering the fabric with the knitting needles, and it can also reduce the occurrence of sparse needle defects (also known as needle paths).
B. Check whether all knitting needles and sinkers are damaged. If damaged, they must be replaced immediately. If they are used for too long and affect the quality of the fabric, it is necessary to consider replacing all knitting needles and sinkers.
C. Check whether the needle groove walls of the needle plate and the needle cylinder are damaged. If problems are found, repair or replace them immediately.
D. Check the wear of the cam and confirm whether it is installed correctly and whether the screws are locked.
E. Check and correct the installation position of the yarn feeder. If it is found to be severely worn, it needs to be replaced immediately.
Lubrication of knitting circular knitting machine
A. Check the oil level mirror of the large plate every day. If the oil level is lower than 2/3 of the scale, it is necessary to add oil. During the six-month maintenance, if sediment is found in the oil, all new oil should be replaced.
B. If the transmission gear is oil-soaked, add oil every 180 days (6 months); if it is grease-lubricated, add grease every 15 to 30 days.
C. During the half-year maintenance, check the lubrication of the transmission bearings and add grease.
D. All knitting parts must use lead-free knitting oil, and the day shift staff is responsible for refueling.
Maintenance of circular knitting machine accessories
A. The replaced needle cylinder and needle plate should be cleaned, coated with oil, wrapped with oilcloth, and placed in a wooden box to avoid being bruised or deformed. When using, first use compressed air to remove the oil in the needle cylinder and needle plate, and after installation, add knitting oil before use.
B. When changing the color variety, the replaced triangles need to be stored in categories (knitting, tuck, floating line), and knitting oil should be added to prevent rust.
C. New knitting needles and sinkers that have not been used up need to be put back into the original packaging bag (box); knitting needles and sinkers that are replaced when changing the pattern and variety must be cleaned with oil, checked and picked out, and then placed in a box in categories, and knitting oil is added to prevent rust.
Maintenance of electrical system of circular knitting machine
The electrical system is the power source of the circular knitting machine, and must be regularly and strictly inspected to avoid failures.
A. Check the equipment for leakage frequently. If found, it must be repaired immediately.
B. Check whether the detectors at all locations are safe and effective at any time.
C. Check whether the switch button has any malfunction.
D. Check and clean the internal parts of the motor, and oil the bearings.
E. Check whether the line is worn or broken.
Maintenance of other parts of the circular knitting machine
Frame
A. The oil in the large oil mirror should reach the oil mark position. Check the oil mark every day and keep it between the highest and lowest oil levels. When refueling, unscrew the oil hole screw, turn the machine, and add oil to the specified position.
B. The upper transmission gear (oil-soaking type) needs to be lubricated once a month.
C. The oil in the oil mirror of the cloth roll box needs to reach the oil mark position, and lubricated once a month.
Cloth roll machine
Check the oil level of the cloth roll machine once a week and add oil according to the oil level. In addition, add grease to the chain and sprocket according to the situation.