A detailed introduction to the structure principle of the automatic meltblown non-woven production line and the knowledge points for installation and debugging

Non-woven fabric is the upstream product of the mask industry. Without non-woven fabric, the mask machine is also a smart housewife and cannot use straw to make bricks. A small single-layer meltblown non-woven fabric production line will cost more than 2 million yuan, and the price of the three-layer is even higher, reaching more than 7 million yuan. Then it will take at least two to three months to master the new machine to production. Time to debug. In the case of a shutdown, in addition to the costs of raw materials, heating, water and electricity, the loss of workers, the working capital of the factory and the loss of golden production time are also lost. When the meltblown non-woven equipment fails, you should contact the professional maintenance team in time for the first time. Time is money. The shorter the time to find the professional maintenance team, the lower the loss will be. Meltblown non-woven fabrics are different from traditional spinning and adhesive production. It is a kind of polymer trickle, which is ejected from the holes of the die spinneret through high-speed hot air flow and becomes ultra-fine short fibers, which are guided to the top of the roller for cooling and cooling. It is formed by its own adhesion. Its production process is a flow process. It is measured by a metering pump from the material in the polymer material and the melted and extruded material, and sprayed by a special nozzle group, so that the high-speed jet of the polymer pores is reasonably guided by the drawings. , After cooling to calendering, the receiving process of the bottom material is coherent. Any problem in any link will cause interference, find the problem in time, and solve the processing problem in time. The meltblown non-woven fabric production line includes many single sets of equipment, such as polymer feeder, screw extruder, metering pump, spinneret assembly, heating system, air compressor and cooling system, receiving and winding equipment. These devices work alone, under the common command of PLC and industrial control computer, to form a synchronization and tension control system, which can be used for inverters to control extrusion and transmission, winding, etc., and a temperature control system to control heating and reverse The converter will also control the fan and cooling. At present, domestic spinneret modules cannot achieve high precision, and other accessories need to be imported from abroad. At present, localization has been able to maintain high production efficiency. Some mechanical problems are easy to find and solve. For example, if the transmission roller bearing is damaged, it will make abnormal noises. It is also easy to find suitable accessories for replacement. Or damage to the reducer will obviously cause speed fluctuations and produce a lot of noise. However, electrical problems, if there are faults, are relatively hidden, such as the disconnection of PLC contacts, which will cause abnormal linkage. The drive optocoupler of the frequency converter is abnormal, which will cause the three-phase current of the motor to fluctuate seriously, and even the phase will stop. The parameters of winding tension are not matched, which will cause uneven winding. Or a certain production line leaks, causing the entire production line to trip and fail to start. Touching the glass touch screen, due to excessive pressing, or dust and grease running into the inside of the production line, resulting in poor contact or aging of the touch panel, resulting in pressing failure or malfunction, all of which need to be dealt with in time. Generally speaking, PLC is not broken to a small degree, but it does not mean that it will not be broken. Generally speaking, burning contacts and power supply account for the majority. Compared with the problem to be solved, it is simple and fast. If the program is lost or the motherboard has The problem will lead to the paralysis of the entire production line, and you need to find a professional company to help solve it. Inverter and tension control system, because the power used in this kind of equipment is relatively large, if the site does not pay attention to cold cutting and dust, it is easy to stop during the production process due to high temperature and static electricity.