What faults may occur when the advertisement engraving machine is started?
If you don't pay attention to the advertising engraving machine at ordinary times, it is easy to have some faults, especially when starting the machine.
Let's follow the small editor to see what failures are most likely to occur when the advertising engraving machine starts. Here is an analysis of the corresponding solutions: failure performance: once started. The device cannot run.
During the inspection, the maintenance personnel found that a power tube was damaged, but because there was no information, they could not figure out the role of the tube. They thought it was the front push of the Power Drive. After the Power Tube was switched on, ping An was burned again and the replaced pipe was damaged.
Fault Analysis: The initial analysis of the advertising engraving machine is safe and repeatedly fusing, which is checked by professional maintenance personnel.
There must be some abnormal large current in the driver, and check that a power tube is damaged. But the role of the tube is not clear.
In fact, this tube is a stepper motor power drive tube, and the stepper motor starts at high voltage, so it has to accept high voltage and large current.
Static inspection shows that the resistance from the power supply to the ground in the Circuit of the Pulse ring distributor is very small, but there is no short circuit.
According to the number of components in the line and its power consumption analysis, the resistance value from the power supply to the ground should not be so small, so it is suspected that the components in the line have been damaged.
As the name implies, the floating cutter head is on the carving plane and can float up and down in a certain range.
The main shaft can slide up and down in the z-axis direction. When using the floating cutter head, it pays attention to adjusting the distance between the floating cutter head and the cutter tip, and can be carved on a large uneven plane, while keeping the carving depth consistent.
Many domestic engraving machines say that their Engraving machines have floating cutter heads, but some floating cutter heads are only-
A simple knife nose, which is used to press the object to be processed, does not play a real role, otherwise the motor is too heavy to float, or scratch the processed surface.
Otherwise, the motor is light and the power is not enough, thus forming a difficult problem.
After development and research, Roth Computer Machinery Co. , Ltd. finally solved this problem. It uses a high-power motor, while the floating part is only the rotor of the motor, so it uses RT4500 to engrave the badge, there is no problem of different depths.
At present, the design has applied for a national patent. Found a chip abnormally hot.
Cut off the power supply pin of the chip after power failure and check the power supply.
Static inspection shows that the increase of resistance from power supply to ground should be normal. The resistance value of the power supply to the ground measured by the chip is very small.
Check the model of the chip, which is a non-standard model. Many manuals have not found the line analysis and confirmed that it is the main component in the board: ring pulse distributor.
Fault Solution: First, change the stepper motor power drive tube with the same withstand voltage current power to further confirm the problem of the chip.
Secondly, the power supply pin of the chip is restored, and the light emitting diode circuit is used to replace each winding of the stepping motor as an analog load.
After the power is turned on, the light emitting diodes are all bright, that is, all the windings are powered on. This is the input stepping pulse that does not meet the requirements of the line. Therefore, it is confirmed that the chip is damaged.
But this chip is not available in the market. When the space in the driver shell is allowed, a ring pulse generator is designed by using the combination circuit, that is, the combination of the existing D trigger and NAND gate, made on a small printed board, remove the original chip and install the small printed board on the pad of the original chip through pins.
The LED is still used as the analog load, and after the power is turned on, the stepping pulse is added to emit light in sequence.
Finally, the simulated load is removed, connected to the host, powered on, and the equipment is running normally.
Summary: When the engraving machine has the above problems, don't disassemble the motor such as the spindle. You need to find the reason slowly. Don't lose because of the small!
These are the most common failures when starting the advertising engraving machine. In short, everyone must be careful in the future use.