The application of glue filling machine in the circuit board industry is mainly in some home appliance industries, such as hot water shell circuit board glue filling, soybean milk machine circuit board glue filling, washing machine control board glue filling, coffee machine control board glue filling.


The function of circuit board adhesive is mainly to protect the circuit board from liquid entering the circuit board, causing short circuits. On the other hand, it is safe and prevents leakage. If the circuit board of the bottom shell of a hot shell is used for power supply and water heating of the shell, if the water on the shell, or if there is water on the shell during the water connection process, if this water drips or flows into the hole of the bottom shell, it will inevitably cause a short circuit.



Circuit board gluing machine


The names of circuit boards include: circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. Circuit boards make circuits miniaturized and intuitive, playing an important role in the mass production of fixed circuits and optimizing the layout of electrical appliances.


The circuit board is mainly composed of solder pads, vias, installation holes, wires, components, connectors, fillers, electrical boundaries, etc. The main functions of each component are as follows:


Through hole: There are metal through holes and non-metal through holes, where metal through holes are used to connect component pins between layers.


Installation hole: used to fix the circuit board.


Solder pad: A metal hole used for soldering component pins.


Filling: Copper coating used for ground wire networks can effectively reduce impedance.


Connector: A component used for connecting circuit boards.


Electrical boundary: used to determine the size of a circuit board, and all components on the circuit board must not exceed this boundary




Wire: An electrical network copper film used to connect component pins.


Circuit board gluing is generally divided into front and back gluing, and the glue used is generally organic silicon, because silicone has a wide range of high-temperature and low-temperature resistance, and has good waterproof performance.


After the front and back sides of the circuit board are filled with adhesive, the adhesive solidifies and tightly wraps the electronic components, preventing short circuits or safety accidents caused by water or dust entering.


The application and role of the dual liquid glue dispenser in circuit boards are summarized above.