Our customer Mr. Wang purchased a hydraulic paper cutting machine for his packaging factory from HONOR MACHINERY last year, which had been running smoothly. Recently, the machine suddenly suffered from insufficient cutting force, inaccurate sizing and serious paper burrs. These problems caused huge material waste. With the deadline approaching, Mr. Wang was quite anxious.
Upon receiving his request, we immediately sent our engineer on-site. After inspection, the failure was caused by paper debris clogging the hydraulic circuit and relief valve, leading to insufficient pressure. In addition, the blade had not been sharpened for a long time. The engineer quickly cleaned the oil circuit and valve, sharpened the blade and calibrated accuracy, fixing the problem within 30 minutes.
The machine resumed stable and precise cutting. The most important is Mr. Wang delivered the order on time. He spoke highly of our efficient and professional service. Later, he not only continued to use our equipment but also recommended HONOR MACHINERY to his friends.
Whenever your machine have problems, just contact us and we will give you the best situation. For helping you get to know more about your machine, we summarize and organize the following tips.
Trouble solving method of hydraulic paper cutting machine
One, the machine has no action:
When the machine doesn't have action, this fault usually occurs due to power supply or circuit problems, and the inspection should be carried out in the order of "power supply first, then circuit" to avoid missed inspections.
First, check whether the paper cutting machine has power, when the universal switch switch is opened, the power indicator light on the right side of the switch will be red, indicating that the 220V power supply has been supplied. If you open the universal switch switch, you can't see that the power indicator on the right is red (except for the damage of the indicator light) indicating that the power supply does not enter the machine and check whether the plug connection of the power supply line part is off.
The "universal switch switch" here refers to the main power switch of the machine. When checking the plug connection, pay attention to whether the power cord is damaged or the socket is loose. It is recommended to use a multimeter to test whether the power supply is normal to avoid misjudgment caused by indicator light damage.
Second, under the light of the light, press the knife button in both hands and can not hear any sound on the relay on the circuit board. At this time, it is necessary to check whether there is any problem on the circuit board connected to the circuit board and the electric coil power supply line. If there is no problem, check the transformer to provide the 10V voltage to the coil if there is any problem.
Please pay attention to, before checking the circuit board and electric coil, please turn off the main power supply to prevent electric shock. The transformer is the core component providing stable voltage for the electric coil; if the 10V voltage is not output normally, the relay will not work, resulting in no action of the machine.
Two, no knife: there are three main reasons
"No knife" means that the cutting blade does not move down when the knife button is pressed, which is mostly related to the switch, button or circuit board, and can be judged according to the sound of the relay.
A, the upper limit switch has some problems. It is limited to burn out or oxidation of switch contacts, resulting in poor circuit or bad contact.
B, button has problems, button contact oxidation, need to change button.
C, circuit board problems, the general circuit board itself will not be a problem, mainly the circuit board and line plug contact is not true, check whether the joint is real, such as contact unplug the plug replug real.
When you press the left and right buttons in your hands, you can hear the sound of the relay ticking and suck. It shows that the circuit board is no problem. At this time, the problem should be judged on the limit switch.
Other failure causes and solutions:
The following faults are common in the daily operation of hydraulic paper cutting machines. It is recommended to record the fault phenomenon in detail before maintenance to quickly locate the fault point.
The first kind of malfunction: when you are semi-automatic, do not step on the foot switch and act immediately.
Most of these failures are caused by foot switch damage or short circuit caused by foot switch socket inlet. If the foot switch socket is filled with water, turn off the power and dry it first, then check whether there is a short circuit, so as to avoid secondary failure after directly replacing the parts. And the other is manual start button switch problem. The repair method is to replace the new switches, sockets, button switches or dismantling maintenance related damaged parts. When disassembling and maintaining, mark the parts to prevent wrong installation.
Second kinds of malfunction: when stepping on semi-automatic work, pedal switches slide down, and then rise again after opening.
This phenomenon is usually damaged or broken on the left side switch of the slide seat. The solution is to replace the proximity switch or switch on the switch.
The left switch of the slide seat is a proximity switch, which is used to control the stroke of the slide seat. When installing, adjust the position of the switch to ensure accurate induction with the slide seat and avoid stroke deviation.
Third kinds of malfunction: when stepping on semi-automatic work, pedaling switch and vertical sliding seat drop, and the printing block does not move after it moves left.
The reason for this failure is that there is no problem in the proximity switch on the left side of the slide seat. The solution is to adjust the close proximity switch of the left close to the switch or the close switch, and the micro switch in the foot switch can cause the failure. The solution is to adjust, repair or replace the new micro switch with the micro switch inside the pedal switch.
Fourth kinds of malfunction: when stepping on semi-automatic work, pedals switch, slide slide downward, then move up, but not right. The occurrence of this phenomenon is the problem that the upper left close switch of the vertical sliding seat has not been induced or close to the switch, and the solution is to adjust the upper proximity switch induction or better close to the switch.
The fifth kind of fault phenomenon: after action switching, the action of rising slowly is half beat. This kind of fault is to control the electromagnetic valve with foreign matter obstruction or solenoid valve malfunction. The solution is to remove the magnetic valve to clean or replace the solenoid valve. Before disassembling the electromagnetic valve, turn off the power and air source to avoid oil leakage or electric shock. Clean the electromagnetic valve with anhydrous ethanol, do not use corrosive cleaning agents; when replacing, ensure that the model is consistent, and test the action sensitivity after installation.
Sixth kinds of fault phenomena: manual and semi-automatic no action, power light. This kind of fault is caused by low voltage side fuse, no gas source entering, and all solenoid valves are faulty. The solution is to change the low-voltage side fuse, check whether the pressure reaches 4-7kg/cm, and all the electromagnetic valve failures are very small.
When replacing the low-voltage side fuse, select the specification matching the machine, and do not randomly replace the fuse with a larger specification. Use a pressure gauge to check the air pressure to ensure that the air pressure is stable within the range of 4-7kg/cm², so as to avoid the machine not working due to insufficient air pressure.
Seventh kinds of fault phenomena: automatic and semi auto start. This kind of fault occurs when the right proximity switch of the slide seat is faulty or not induced, the switch fault is selected, and the linkage point of the single action switch is damaged. The solution is to adjust proximity switch induction or replace the right proximity switch, replace or repair the selector switch and single action switch.
Eighth kinds of fault phenomenon: automatic can not start, such fault is the upper and lower cylinder microbranch switch often closed, the contact can not guide or timer damage, the solution is to repair the micro switch, or to replace a good timer.
, which controls the action of the upper and lower cylinders. If the micro switch is normally closed, adjust it to the normal on-off state; the timer is used to control the automatic operation program, and after replacement, re-debug the timer parameters.
Ninth kind of malfunction: the working surface of the paper cutter is not inhale. This kind of trouble is caused by the suction motor.
Control of motor running contactor damage, suction motor rotation, but control the suction solenoid valve failure, inspiratory selection switch failure, solution to repair or replace.
The tenth kind of malfunction is that the working surface is not aspirated, because the suction solenoid valve is bad or the internal block is damaged. The solution is to replace the repair. If the suction solenoid valve is blocked internally, it can be disassembled and cleaned; if it is damaged, it needs to be replaced. After replacement, test the suction effect to ensure that the working surface absorbs paper stably.
Eleventh kinds of fault phenomenon: the rise speed of the vertical sliding seat is slow. This fault is mostly caused by hydraulic system problems. The possible reasons include: insufficient hydraulic oil, deteriorated hydraulic oil, hydraulic pump failure, blocked or leaking hydraulic pipelines. It is recommended to check the hydraulic oil level and oil quality first, then check whether the hydraulic pump and pipelines are normal to ensure stable pressure of the hydraulic system.
