2022/11/03
Hydraulic principle of vacuum press
The hydraulic system of the vacuum press adopts low pressure large flow pump and high pressure small flow pump for oil supply, and the high and low pressure pumps are driven separately. Press the close pressurization button to start the high and low pressure pumps at the same time, energize electromagnet 1YV, and the solenoid valve reverses. The low-pressure pump passes through the check valve 6, and the high-pressure oil enters the oil cylinder through the solenoid reversing valve 10 and check valve 11. The worktable of the vacuum press starts to rise. When the hot pressing plate of the press is closed, the motor of the low-pressure pump stops when the upper limit of the set pressure of the electric contact table 7 of the oil cylinder pressure rise and stop is reached. The high-pressure pump continues to supply oil to the cylinder. When the upper limit of the set pressure of the electric contact pressure gauge 8 is raised and stopped, the high-pressure pump stops. 1YV loses power. The vacuum crimping machine enters the stage of automatic pressure maintaining timing. In the next stage, if the pressure drops to the lower limit of contact pressure gauge 8, the high-pressure pump starts, electromagnet 2YV is powered on, and the solenoid valve reverses. The pressure oil enters the hydraulic check valve through the electromagnetic reversing valve. Open the hydraulic check valve, so that the vacuum compressor stops when the pressure relief return reaches the lower limit switch, and the vacuum compressor completes a working cycle. Overflow valve 5 is used to adjust the pressure of low-pressure pump, and the maximum adjusted pressure is not more than
2022/11/03
System Operation of Vacuum Laminator
A、 Electrical system operation of vacuum laminator 1. Close the 3QF, 1QF and 2QF circuit breakers, and the 1HL power light is on. 2. Close 1K, and 0KM is powered on to prepare for the motor.
2022/11/03
Correct use of non stick cloth for the laminator
1. Normal use of glass cloth In the sales of the laminating machine, the manufacturer always places two pieces of non stick cloth in in the laminating machine。It is to remind the manufacturer of the importance of non stick cloth in production. The function of the non stick cloth is to isolate the melted EVA and stick it to the rubber plate of the upper chamber and the heating plate of the laminator. Once EVA sticks to the rubber plate and heating plate, it will be difficult to remove it.
2022/11/03
Introduction to PCB hole inspection machine
Like most AOI systems, PCB hole testing machine system mainly consists of the following parts: motion control unit, LED lighting unit, image acquisition unit, data processing unit, etc. The motion control unit relates to the transmission belt, PCB mobile platform, stepping motor, servo motor, synchronizing wheel, CIS focusing system and other precision mechanical systems. The main function of LED lighting unit is to provide appropriate lighting for the system to handle the accurate object image position relationship and ensure that the image has sufficient contrast and clarity. The image acquisition unit uses an image sensor to capture the image of the circuit board, and then collects the captured image through the image acquisition card to transfer the image data to the computer system. The data processing unit is used by the computer to perform algorithm analysis on the collected circuit image to determine whether the detected circuit board is qualified.
2022/11/03
The following introduction to these features of the small press is just a summary. For more information about the products, please visithttp://www.szvstar.cn First, it is about the protection of radio disturbance. Because the special layout equipment of the small press, such as high-frequency magnetic field shielding system equipment, has played an excellent role in reproducing radio wave disturbance. In this way, it not only ensures the normal operation of the press, but also plays a certain role in protecting the operation safety.
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