Improvement and maintenance of winding machine motor
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The winding process has the functions of changing the package, increasing the yarn capacity of the spinning yarn package, removing defects on the spinning yarn and improving the quality of the spinning yarn. Among them, the winding machine motor also plays an important role. In long-term practice, the staff has summarized some maintenance and improvement skills for winding machine motors.
Method 1: Repair the rotor shaft
Extended life span by 5 years
No7-II type winding machine grooved drum motor rotor shaft and tower pulley are connected through pins to drive the grooved drum to operate in the form of a transmission belt. Since the drum starts and brakes quickly and in a very short time, and the drum motor is under the action of intermittent switching, the connection between the rotor shaft and the pulley is repeatedly subjected to torsional stress. After frequent use, it is easy to break due to fatigue, and the fracture is relatively small. flat. Once the rotor shaft breaks, the entire motor worth more than 3,000 yuan cannot be used due to the unavailability of motor rotor shaft accessories. So we took the following remedial measures.
Remove the motor rotor, flatten the cross section, and round it into a truncated cone shape with a 45° chamfer. Then prepare a No. 45 round steel with a diameter of 20 mm and a length of 50 mm. Treat one end of it into a round cone according to the above method, and then align and fix the two parts of the round cone facing the same axis for welding. Pay attention to making the outer circle of the welding point relatively large. These are used to increase the strength of the welding joint and facilitate lathe finishing. After welding is completed, use a lathe to adjust the rotor shaft to its original size and shape, and assemble the assembled motor rotor to the motor. When cleaning, attention should be paid: when welding, the small round steel should be on the same axis as the motor rotor shaft; when disassembling and cleaning the rotor, do not damage the motor rotor and coil.
Our company has currently dealt with more than 10 broken motor rotor shafts, which have been put into operation for more than 5 years, and everything is normal. It can be seen that this method is simple to operate, economical and effective, and the use effect is no different from the original shaft, which greatly saves costs.
(Hu Zhaoyang and Chen Dongqing of Anhui (Wuhu) Yuzhong Fabric Co., Ltd.)
Method 2: Replace the bearings
Reduce maintenance costs
Due to the long-term operation of the Schlafhorst 238 winding machine used by our company, the tension motor often fails to rotate, which directly causes the bobbin to be poorly formed. If you purchase an imported tension motor, it will cost more than 1,000 yuan, which will increase the company’s costs. After repeated research and testing by our company’s technical staff, we have summarized some repair techniques.
The specific repair method is as follows: scratch the paper mark on the tension motor shaft head shell, and you can see the 4 connected rivet heads. Use a drill bit smaller than the diameter of the rivet (4 mm) to drive about 2 mm into the center of the rivet head so that the rivet head can exit from the hole. Gently pry open the shell, mark the seam, and then pull out the motor rotor. In most cases, you will find Bearing damage (the two bearing models are 625Z with an outer diameter of 16 mm, an inner diameter of 5 mm, and a thickness of 5 mm). Reinstall the motor rotor after replacing the bearings, then install the housing and bracket. When installing the bracket, pay attention to aligning the rivets on the original shell, and apply the prepared A and B glue between the shell and the bracket to bond and fix it. Finally, clamp the tension motor on the vise and wait for the A and B glue to solidify. , which can be reused.
It should be noted that since the tension motor shell manufactured by the manufacturer is connected and fixed with extrusion rivets, it is very difficult to disassemble and assemble. Therefore, you must be careful when disassembling and assembling to prevent damage to other places, resulting in wasted effort. (Jiang Zhiyou of Baoding Yimian Group)
Method 3: Make your own fault tester
Simple operation and accurate testing
The single-spindle motor of Savio automatic winding machine often alarms due to motor failure such as no brake. The alarm code is F9. It cannot be repaired by general technical means and usually needs to be returned to the factory for repair, causing the equipment to not be used normally. After repeated research on the motor and motor feedback signals, I designed and produced a fault testing instrument that is easy to operate, simple and accurate.
The specific operation steps are as follows: First, remove the single-spindle motor from the automatic winding machine, set the multimeter on the resistance level of 200 ohms, and measure the W, U, and V terminals of the motor. If the WU, WV, and UV DC resistances are different and the insulation resistance to ground must be less than 0.5 megohms, it is determined that the motor is bad and the motor spindle winding needs to be replaced. If the DC resistances of WU, WV, and UV are the same and the insulation resistance to ground must be greater than 0.5 megohms, then measure the feedback signal of the single spindle motor.
Then, connect the 10-pin plug of the single-spindle motor to the 10-pin socket of the tester, turn on the power of the tester, and slowly rotate the single-spindle motor rotor for 1 week by hand. Under normal circumstances, LED1, LED2, and LED3 will flash. It will light up 2 times, and LED4 will light up 24 times. If LED1, LED2, LED3, and LED4 do not light up enough or do not light up, it means that the feedback signal from the single-spindle motor of the trough barrel is incorrect or the internal Hall sensor is damaged or the position is abnormal. Adjust the position or replace the sensor corresponding to the problematic LED light. Then repeat the above experiment until it works normally many times.
Finally, the functions of the four sensors inside the electric single spindle machine are stop, reverse, pulse and position signals. (���Xi Oasis Fabric Co., Ltd. Zhang Yongzheng)
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