What are the functions of four-column servo hot press?

Hot pressing is a kind of equipment, which heats two tinned parts coated with flux in advance to a temperature sufficient to melt and flow solder, and after curing, establishes a permanent electrical and mechanical connection between the parts and the solder. According to the product, the heating rate can be selected. Titanium alloy pressure head, uniform temperature, fast temperature rise and long service life. The pressure head is unique in design and can be adjusted horizontally to ensure uniform compression of the assembly. Temperature numerical control, thorough understanding. Equipped with digital pressure gauge, the pressure boundary can be preset.

Hot pressing is also called bonding machine. According to the different hot pressing media, it can be divided into soldering, ACF (anisotropic conductive tape), ACP (anisotropic conductive adhesive) and TBF (hot melt adhesive film). It is suitable for the connection of FPC (flexible printed circuit board), HSC (heat seal connector) and TAB with LCD and PCB. Because the spacing between PCB and FPC in consumer electronic products tends to be smaller, the traditional welding process is still difficult to meet the requirements of ultra-fine hot pressing. ACF technology has been gradually adopted by mobile phone designers.

According to the pulse heating theory, due to the unique design of the welding head surface, the resistance of the welding surface is quite small, and the current will pass through the section with the lowest resistance. After constantly switching the voltage and adjusting the current level, it quickly heats up after passing through the welding head.

The heating methods of hot press mainly include steam heating, electric heating and heat transfer oil heating. For steam heating, although the heating temperature rises rapidly, it needs to be used in pressure boilers, and the pressure in the pipeline is relatively high, which is prone to uneven heating temperature.

Although electric heating has the advantages of high heating temperature, rising temperature and simple operation, it consumes a lot of electricity and costs a lot. Using heat transfer oil for heating can realize normal pressure heating, with high heat capacity, small heat loss and relatively uniform heating temperature.

Hot pressing generally has two skill indicators, namely:

Response speed: The requirement is that the sooner the better, which can improve the production efficiency of the machine.

Welding accuracy: the higher the requirement, the better, which is conducive to operating accuracy.