Working principle of automatic filling machine, high-precision quantitative liquid filling machine, a mechanical rotary, normal pressure filling, by quantitative measuring cup, filling valve adopts full enclosed type, automatic type is passed by losing bottle line empty bottles, the bottle feeding wheel mechanism, will not empty bottles of accurate sent to the turntable, empty bottles and immediately turn, at the same time by the soft supporting agency will empty the bottle bottle after contact with the filling valve automatically opens, filling, after filling, automatic bottle out into lose bottle line, the whole process is over. The machine is equipped with automatic protection device, such as a card bottle phenomenon, the machine will automatically stop protect human security.
1, PLC failure
PLC failure mainly has the output relay contacts adhesion.
If that point control motor, as a signal to start the motor fault phenomenon, the motor running, but after the stop signal, motor did not stop running, after the PLC power outages, machine didn't stop running. If that point control solenoid valve. Fault phenomenon for electromagnetic valve coil electricity, cylinder no longer. If used, the impact of PLC make adhesion point separating method, can help determine the failure.
PLC output points of failure maintenance method has two, a is more convenient with programmer modify the program, amend the damage output points to spare output point, at the same time line. Such as control, electromagnetic valve, 1004 points of damage to the standby points, 1105 points.
Programmer to find 1004 points related statements are available, and keep (014) 01004 to keep (014) 01105. 1002 points of damage control motor, backup point 1106 instead, modified by 1002 related statements out01002 out01106, at the same time line then. If there is no programmer, can adopt more trouble in the second, remove the PLC, open PLC backup point the output of the relay will be removed to the output of the damage to the point. According to the original line installation again can.
2, close to the switch failure
Filling machine packaging machine has five proximity switch. Three protection for the knife, two up and down is used to control the membrane film machine. Which is used to control the knife protection, occasionally a secondary misoperation. Will interrupt the normal operation process, and as a result of the failure occurs less frequently, time is short, bring certain difficulty to failure analysis and elimination. The cause of the problem is melting knife in the process of decline. Never met by packaging. And melting knife upgrade of proximity switch signal lost, just contact with the blade protection to the packing materials, melting knife automatically back up. Fault repair methods, but will melt knife upgrade of proximity switch a same model switch installed in parallel, two parallel switch work, to improve its reliability.
3, magnetic switch failure
Magnetic switch is used for detecting the location of the cylinder and control cylinder stroke. Laminated, push package, package and melting knife four cylinder connected, with magnetic switch to detect and control their position. Failure mainly for subsequent cylinder action, no reason is that the cylinder speed faster, cause the magnetic switch can't detect signals. Such as push cylinder speed is too fast, push package after reset, package and melting knife cylinder action.
4, the electromagnetic valve failure
Solenoid valve failure mainly for cylinder action, or no, the reason is that the cylinder solenoid reversing or not gas. If the solenoid valve gas, because of in and out of the gas circuit are interlinked, machine working pressure, the air compressor pressure can not reach knife beam rise does not reach the designated position. Knife beam protection approach switch doesn't work, all the chance the prerequisites, the machine can't run, it's easy to confused with electrical fault. Electromagnetic valve gas there are air, carefully listen to the sound source and search for gas leakage point with the hand, the general can easily find the channeling gas solenoid valve. Repair method is to clean the solenoid valve, replace damaged seal ring, can't repair, replace the solenoid valve.
