Winding, as the last process of spinning and the first process of weaving, plays a role of "bridge", and therefore plays an important role in the textile field. When the winder fails, the cause and solution of the failure should be found out according to the primary and secondary factors.
The bobbin does not turn
At the time of normal winding, the bobbin unwinding is completed, the middle yarn detecting device detects and sends out a signal, and drives the transmission mechanism to move the insertion spindle seat to the empty tube conveyor belt and kick the empty yarn tube into the conveyor belt. The stepping motor rotates a ratchet through a transmission rod, and the bobbin magazine rotates a certain angle to fill the full yarn into the insertion spindle holder, and then the insertion spindle holder moves back to the working position.
Since the ratchet part is blocked by velvet or loops, the pawl cannot drive the ratchet wheel, so the yarn bank does not rotate. As long as the parts of the yarn storage are removed, the lint or loops can be removed to return to normal. When using compressed air for cleaning every week, as long as the cleaning is in place, this failure can be prevented.
The bobbin is frequently withdrawn by the bobbin changing device
This fault is caused by the dirt and failure of the surface of the middle yarn detecting device. Just wipe the detection surface part clean. Regularly cleaning the detection part of the yarn detection device is the best way to prevent this failure.
Scissors are not sharp
If the scissors are not sharp enough to cut the yarn, then the yarn sucked by the small nozzle will be folded into double yarns at the fixed nozzle, so that it will be cut when passing through the yarn clearer. And increase energy consumption. Remove the scissors part for maintenance and replace with a new pair of scissors. Do not discard the sharp scissors. You can send them to the mechanical maintenance and processing workshop (machine repair workshop for short) to sharpen them and continue to use them.
Tension device malfunctions
Tension device provides proper tension to the yarn through the tension disc. The tension disc is divided into a pressure disc and a stationary disc. The stationary disk is fixed, and the pressure disk can move and swing axially. When the reel is wound in the pressure plate, its movement is blocked, which causes the tension to be unstable, the winding density to be uneven, and head breakage often occurs. When repairing, dismantle it according to the operating specifications and remove the debris such as loops.
Large nozzle leaking air
When the large suction nozzle is at the zero position, use a yarn to place it next to the large suction nozzle. If the yarn is sucked into the large suction nozzle, it means that the large suction nozzle leaks air. Leaking air from a large nozzle will not only cause energy waste, but also make other parts of the air pressure insufficient. Whether the big nozzle sucks air is determined by the big nozzle energy-saving trap on the damper. When the trap is opened, the large nozzle sucks air, otherwise it doesn't suck air. Air leakage from the large suction nozzle is caused by the flaps being loosely closed due to the impact of the lint dust. Therefore, during maintenance, remove the damper, clean the lint dust, and remove the cylinder that drives the flap Piston, apply sealing grease to achieve sealing and lubrication. After the air damper is installed, use the yarn again to check whether there is no air leakage, and make sure to repair one.
Unqualified splicing or splicing failure
Unqualified splicing or splicing failure is caused by a variety of reasons. First, improper process design and unreasonable splicing parameters. The second is that the position of the yarn lever is incorrect, and the yarn cannot be transferred into the splicer. Third, the splicer is inflexible due to lack of oil, the seal is leaking, the splicing cover is damaged or it fails to pop up. The first reason is that the splicing parameters can be changed due to human reasons, and then a splicing test is performed to check whether the splicing parameters are reasonable. The solution to cause two is to loosen the fixing screw on the yarn picker and correct the position. The third reason is the phenomenon that often occurs, and it is also the key part of maintenance work. Therefore, it can be carried out according to specific conditions during maintenance, and if necessary, lubricate the moving parts.
Yarn clearer failure
The yarn clearer is another key component that affects the quality of the winder. Automatic winders usually use electronic yarn clearers, which are divided into photoelectric and capacitive types. Taking the TK830 capacitive yarn clearer produced by LOEPFE as an example, if there is a mechanical wave in the bobbin, the yarn clearer will cut after a few revolutions of the grooved drum. At this time, changing the bobbin can resume normal production. When the yarn clearer fails, frequent shearing action occurs in a short time, so that production cannot be continued. The troubleshooting method is to reset the yarn clearer. The reset times should be more than two times to ensure that the reset is accurate. If the reset is invalid, it can be determined that the internal electronic components of the yarn clearer are damaged, and can be handled by an electrician.
The size of the chuck grip arm is not flexible.
The big and small chucks on the bobbin yarn holding arm are high-speed parts, and the rotation speed is close to the speed of the grooved barrel. Therefore, the fault of bearing wear often occurs. After the fault occurs, the package is difficult to rotate, the yarns are not evenly arranged, and an alarm prompt will appear. As long as the bearing in the chuck is replaced with a new one, normal production can be resumed.
