The spare parts of wave soldering include: electric box, nearly half connection, spray box, full hot air preheating box, wave crest device, claw washing device, exhaust device (optional U floating fan), oil and water separation equipment, splint device, explosion-proof lamp, tin spray device, tin furnace lifting device, tin furnace support, nameplate, tin furnace automatic entry and exit device, tin furnace fixed anti-slip device, etc. It mainly consists of the following parts:

1 Spray system

1. Nozzle: The spray range is adjustable from 20 to 65mm, the height of the nozzle is adjustable from 50 to 200mm, and the maximum flow rate is 60ml/min.

2. Gas system: mainly composed of filters, control valves and pipe joints, with digital display.

3. Nozzle moving system: motor driven, intelligently controlled by Japan's Mitsubishi PLC, using a limit proximity switch and a board entry light eye for combined control, and performs automatic PCB board entry detection and sensing according to the speed and width of the PCB. spray.

4. Flux filtration and recovery system: Stainless steel wire mesh filtration, using the characteristics of the fluid to filter and recover excess flux to the maximum extent.

2 Preheating system

1. Preheating area: 3-stage independent microcirculation preheating with a total length of 1800mm and independent temperature control (optional 4-stage preheating, more powerful hot air) .

2. PLC: temperature control

3. Motor: full hot air heating

3. Tin furnace system

1. Automatic diversion The groove is matched with the front and rear buffer devices of the nozzle to greatly reduce the amount of tin slag oxidation, and the external manual adjustment of the wave peak span is convenient and safe.

2. The furnace is made of lead-free special materials, and the nozzle is equipped with an adjustment device to greatly reduce oxidation and reduce costs for customers.

3. The integral tin furnace is an automatic entry and exit device, which reduces maintenance time and reduces the workload of technicians. Compared with its counterparts, the manual inlet and outlet of the tin furnace is easier to operate, saving labor and time.

4. The tin furnace is equipped with a liquid level mark line, which can inform the operator of the minimum tin liquid level standard to avoid an increase in the oxidation amount of tin slag caused by low tin level.

4 Transportation system

1. The transportation system adopts a segmented floating structure and new support profiles with good strength, which effectively prevents guide rail deformation and prevents PCB from falling.

2. Professional reinforced lead-free titanium alloy claws, non-stick tin, long service life. The pressure bar uses a 5MM brass flat bar, which is wear-resistant and silent, reducing wear with the titanium claw. Optional load-bearing guide rail + load-bearing duckbill claw, stable and durable, never deformed.

3. The titanium claw cleaning device is an automatic cleaning device. It is equipped with an automatic liquid pump and a liquid storage tank. It is equipped with an industrial flexible brush and does not damage the titanium claws. It is easy to clean and simple to operate.

4. Optional central support system, stainless steel arc-shaped support bar, the support position and height can be quickly adjusted to prevent the circuit board from being overweight or deforming the panel, and preventing the thin board from deforming due to excessive temperature.

5 control system

1. DELL monitor + industrial control host + Siemens module (DELL monitor + industrial computer + Mitsubishi PLC).

2. Protection system: Stop heating, overload protection, and card board protection when preheating or tin furnace failure occurs.

3. Abnormal alarm device: alarms for excessively high or low temperature, low flux level and various system failures.

Reflow soldering equipment is equivalent to a large oven, mainly including air flow system, heating system, transmission system, cooling system, flux recovery system, exhaust gas treatment and recovery device, top cover air pressure lifting device, and exhaust device wait. The components included are as follows:

?1. Air flow system: The air flow convection efficiency is high, including speed, flow, fluidity and penetration ability. ?

?2. Heating system: consists of hot air motor, heating tube, thermocouple, solid state relay, temperature control device, etc. ?

?3. Transmission system: including guide rails, mesh belts (central support), chains, transport motors, track width adjustment structures, transport speed control mechanisms, etc. ?

4. Cooling system: It is used to quickly cool the heated PCB, usually in two ways: air cooling and water cooling.

5. Nitrogen protection system: PCB is protected by nitrogen during the entire process in the preheating area, welding area and cooling area, which can prevent the oxidation of solder joints and copper foil at high temperatures and enhance the wetting of the molten solder. Ability to reduce internal voids and improve solder joint quality.

6. Flux recovery device: The flux exhaust gas recovery system is generally equipped with an evaporator. The exhaust gas (flux volatiles) is heated to above 450°C through the evaporator, so that the flux volatiles gas Then the chiller cools the water and circulates it through the evaporator. The flux is extracted through the upper fan, and the liquid formed by cooling through the evaporator flows into the recovery tank. ?

? 7. Waste gas treatment and recovery device: There are three main purposes. First, environmental protection requirements, preventing flux volatiles from being directly discharged into the air; second, solidification and precipitation of waste gas during welding. It will affect the flow of hot air, reduce convection efficiency, and needs to be recycled; thirdly, if you choose nitrogen welding, in order to save nitrogen and recycle nitrogen, a flux waste gas recovery system must be configured. ?

? 8. Top cover air pressure lifting device: It is convenient for cleaning the soldering chamber. When the reflow soldering machine needs to be cleaned and maintained, or when a board falls off during production, the upper cover of the reflow furnace needs to be opened. . ?

9. Exhaust device: Forced ventilation can ensure good flux discharge, and special exhaust gas filtration ensures clean air in the working environment and reduces exhaust gas pollution to the exhaust duct.

? 10. Appearance structure: including the appearance, heating section and heating length of the equipment.