Nowadays, the coating machine has been applied to every corner of production and life. So, do you know the coater? Do you know how it works for production? Now we come to understand the type of coating machine and production applications it!
Depending on the principle of division, the coating machine can be divided into different types. According to the number of coating can be divided into single-layer coating and double coating, according to the relationship between the coating machine and paper machine can be divided into two types of machine and machine. Machine-type coating machine is the coating machine installed in the paper machine, and then you can achieve continuous paper and coating. The machine outside the coating machine is to achieve the coating machine and paper machine independent operation. Coatings currently available for coating operations include three types, namely roll coater, air knife coater and blade coater.
Small coating machine is currently widely welcomed by many manufacturers, the coating by the multi-layer coating composition, according to the requirements of the object to be coated to determine the thickness of the coating. The current favorite small coater using a CNC panel, the program completely independent settings, can be achieved in three modes of storage, people can be adjusted according to different models of coating distance and coating speed. Different production workers in the operation of this machine will have a different approach. If you use imported steel rod drive system, then it will run more smoothly, the use of the cycle will be longer, the stroke control is also very accurate.
Small coating machine with a number of fine-tuning function, the higher accuracy, more humane, can adapt to the different needs of enterprises. For example, the fuselage with a stainless steel, not only anti-corrosion rust, but also can make the machine more solid and beautiful, can achieve a machine dual-use. The scraper mode of the selectivity, the workers in the operation more superior, not only can improve the production efficiency, but also can save the production costs. It is well known that the coating machine as a production and printing role of the coating equipment, its life is limited, and other production equipment is in common, that is, for the aging, the day is not so easy to use, in order to ensure that Coating machine life, experts recommend usually do a good job of coating machine maintenance and repair.
1 Tension testing of the coating machine
Coater through the pendulum and potentiometer to achieve the detection of tension, pendulum and potentiometer through the gear connection.
Set the potentiometer for each terminal P +, U, P-, PG,
The voltage value is + 10V between P + and PG and -10V between P- and PG.
When the tension setpoint = tension feedback value, the voltage between U and PG is 0V;
When the tension value changes, that is, the swing roll occurs, the voltage between U and PG changes, thus detecting the tension, effectively control the tension stability.
2 Tension control of the discharge unit
The coating machine generally sets two discharge units.
(1) Y299D in the first discharge unit for the passive discharge. The unit has been very mature and the tension can always remain stable.
(2) the second discharge unit for the active discharge. In the discharge process, unwinding volume decreases, the discharge pendulum roller through the PLC and PID controller to achieve tension control.
PLC controller can calculate the unwinding volume diameter, control the corresponding motor to accelerate, in order to maintain the tension stability; PID controller in the discharge pendulum roll position offset, the calculation of the discharge motor speed to achieve fine-tuning to ensure tension stability.
3 Tension control of the material storage rack and the discharge process
Storage material storage rack can be achieved when the material at the zero speed material. Before the start of the equipment should first check the state of the discharge material storage rack, to ensure that the discharge material storage rack storage substrate, ready for the discharge.
When the discharge unit needs refueling, press the feed button, discharge material storage rack motor acceleration, discharge traction motor deceleration. In this process, the discharge traction pendulum roller control the discharge traction motor, discharge material storage machine motor to follow the host speed, when the discharge storage rack speed = host speed, the discharge traction motor speed down to 0. At this point, the discharge traction pendulum roller from the original control of the transfer of traction motor to switch to control the discharge storage rack motor, so as to ensure that the tension tension stability, smooth zero speed material.
After the completion of the discharge work, press the material to complete the button, discharge material storage machine motor deceleration, discharge traction motor acceleration, while the discharge pull pendulum roller began to control the discharge traction motor, when the discharge material storage machine motor speed reduced to 0, the loading traction motor speed = host speed.
The storage hopper starts to accumulate at zero speed until it rises to the set speed. At this point, the speed of the material pulling the traction motor = the speed of the host + the rising speed of the material storage rack, and the tension of the process is stable.
When the storage material is completed, the discharge material storage machine motor began to slow down, until the speed is zero. Discharge traction motor deceleration, and in the discharge storage rack motor down to 0, down to the same speed with the host.
4 Tension control of the paint unit
The circumference of the coating roller is fixed, so the speed of the coating roller motor is the speed of the host and the speed of the pendulum roller. Anchuan H1000 frequency converter internal PID controller to meet the coating unit to the composite unit between the tension fine-tuning control.