How to reduce drawing frame failure?

After years of operation, the drawing frame is inevitably subject to failure, and some failures have a high repetition rate. Netizens discussed the failures of drawing frame enthusiastically, and summarized some typical failures in daily maintenance and production practice.
HSR1000 electrical system fault
The failure of the air suction device indicates that the dust suction pressure is too low. One of the reasons for the failure is that the opening time of the damper exceeds 10 seconds during the cleaning and returning process of the barricade, which weakens the air pressure entering the dust suction duct. If the fault is caused by this reason, just remind the barricader not to exceed the time limit of the system when opening the damper. The second reason is that the shutter at the air inlet of the bellows is too small and the fresh air supply is insufficient. The solution is to remove the safety net at the side of the fan, and adjust the weight above the shutter until it is at the proper position. The third reason is that the speed of the suction motor does not meet the requirements. Select the maintenance function "S", test whether the speed of the suction motor is normal, and check whether the motor has abnormal sound and obvious vibration. If the fault is caused by motor bearing fault, replace the motor bearing—— later
The reason for the failure of the pressure roller is that the pressure roller is filament wound, and the computer system cannot detect the winding and blocking device sensor signals. The solution is: remove the winding fibers and clean the surface of the compression roller with alcohol. If necessary, check the radial clearance (0.05mm) and axial clearance (0.1mm~0.2mm) of the compression roller. Press the fault reset button. If the fault cannot be removed, it can be inferred that the fault is caused by excessive dust accumulation on the pressure roller displacement sensor or distance change. The handling method is to open the protective cover above the displacement sensor for cleaning, or check and adjust the radial distance of the displacement sensor until the LED on the sensor lights up. If the compression roller drive toothed belt breaks, open the safety shield of the compression roller drive toothed belt and replace it—— chengqiang16213
When the sliver breaks during feeding, the solution is to press the fault reset button on the display screen and connect a new sliver. If the fault cannot be eliminated by this method, the drive flat belt between the guide strip frame and the vehicle body is broken or the tension pulley of the flat belt is worn, resulting in the imbalance of the tension of the flat belt, which affects the normal transportation of the sliver and stops. The treatment method is to repair or replace the flat belt. Another possibility is that the broken bar optical switch is blocked by flying flowers or is too sensitive or fails. The handling method is to adjust the sensitivity of the broken bar light control switch, and clean the light control switch until the lights of the transmitter and receiver are on—— later
FA306A rear area mechanical failure
FA306A rear roller and roller head are easy to separate. The reason is that various automatic stop devices, such as broken head automatic stop and full cylinder automatic stop, will produce reverse movement in a moment due to the inertia effect of the rear roller when parking and braking. After that, the roller is connected by synchronous belt, which will produce elastic deformation at the moment of stopping, increasing the reverse movement of the rear roller. Under repeated action, the rear roller is separated from the roller head, which is also a disadvantage of synchronous belt transmission in the drafting area. For the disconnection of the rear roller, the joint between the rear roller and the shaft head shall be sealed with thread sealant during the flat car maintenance, so as to make the shaft connect closely and avoid disconnection—— Dr. Heru
With the transmission error generated in the transmission process and transmission movement of the synchronous belt, the synchronous belt will be placed on the surface of the tooth profile of the tooth groove. As the error accumulates for many times, the belt tooth will climb onto the top circle of the pulley, and the synchronous belt will slide on the top circle of the pulley. This is called "tooth climbing". In addition, if the tension of the synchronous belt is too small, it is easy to cause the synchronous belt to jump out of the belt gear groove when starting frequently and there is impact load, and the oil stain on the surface of the synchronous belt or the toothed wheel will cause tooth creeping.
The solution is to remove the toothed belt during the small flat car, check the tension pulley bearing, 24 teeth and 21 teeth clearance of the transmission synchronous belt, check whether the pulley is linear and symmetrical, and install the synchronous belt in strict accordance with the requirements to prevent problems such as broken roller and tooth creeping caused by too large or too small tension—— thirteen billion twelve million eight hundred and ninety-eight thousand nine hundred and eighty
The self stop failure or low sensitivity of the drafting area, a large amount of entanglement of the rear roller or the rubber roll, make the roller or the rubber roll unable to rotate, which is easy to cause synchronous belt tooth stripping. In addition, if the quality of synchronous belt is not up to standard or the belt is used for a long time, the impact load on the belt teeth will cause fatigue aging of the synchronous belt. If the tension of the synchronous belt is too tight, the synchronous belt teeth will be peeled. In this case, the synchronous belt from a regular manufacturer should be purchased. When getting on the vehicle, appropriate pre tension should be applied and the synchronous belt tension should be checked regularly—— South China Sea Fisherman
FA322B autoleveller inspection
Since the autoleveler is fed to measure the fiber density, the textile mill uses "standard value determination of weight deviation=dry weight × As the moisture regain of the textile mill is changing, the autoleveller should be checked and adjusted regularly even though there is one.
Test the number deviation of output bars 1~3 times a day, and correct the correction [%] in menu 10. Check the control range of the feeding sliver every 3 days by entering Menu 1 through the display terminal and observing the drafting change D%. If D% is always less than | C ± 500 |, no adjustment is required. If D% is always greater than | C ± 500 |, readjust the E, F, C, D teeth in the total drafting and readjust the leveling working point.
Clean the cotton dust around the speed sensors T1, T2 and T3, and check whether the speed sensors are in the best working condition once a month. Clean the dust on the FP-MT bell mouth with absolute ethanol once a week—— ananba