What equipment is needed for an LED chip production line?

LED semiconductor lighting network LED SMD light is made of FPC circuit board, LED light, high quality silicone casing. Waterproof performance, safe and convenient to use low-voltage DC power supply, various colors and bright colors; outdoor use can resist UV aging, yellowing, high temperature resistance, etc. This product is widely used in building contour lights, entertainment venues, decorative lighting, advertising decoration The field of lighting.

At present, in the LED industry, LED chip mounter is generally used to mount LED products , and the chip LED can solve the problems of brightness, viewing angle, flatness, reliability and consistency. So, what equipment do we need for LED chip processing?

The LED chip processing process can be simplified as: printing, patching, soldering, overhauling

[1] solder paste printing machine

Modern solder paste printing presses generally consist of plates, tin paste, embossing, and circuit boards. Its working principle is: firstly, the circuit board to be printed is fixed on the printing positioning table, and then the solder paste or the red glue is printed on the corresponding pad through the steel mesh by the left and right scrapers of the printing machine, and the PCB is uniformly printed. The transfer station is input to the placement machine for automatic placement.

The working procedure of the automatic solder paste printing machine:

1. Turn on the Switch, return the machine to zero, and select the program.

2. Install the support frame: adjust the track width, move the baffle cylinder, open the transport switch, place the board in the center of the track, press the button to make the board reach the specified position, and press the track clamp button.

3. Adjust the position of MARK2 to correspond with the “Ten” word of the computer section to confirm whether the production data is correct and click OK.

4. Install the steel mesh and scraper in turn: press the production setting, open the mediation window, and start production.

5. Add solder paste to the steel plate. The amount of solder paste added is higher than the blade 1/3 lower than the blade 2/3.

6, visual inspection before printing, solder paste can not be biased, even tin, less tin, cutting, uneven thickness and so on.

7. Confirm the first piece of printing by the quality personnel, and confirm the OK before normal operation.

Precautions for automatic solder paste printing machine

1. It is forbidden to operate the machine when the printing machine door is opened or fails.

2. Note that the steel mesh can not block the hole during the operation.

3, the solder paste keeps a small amount of access to the principle of multiple additions.

4. Do not print for more than one hour, please recycle the solder paste.

5. If there is a printing error in the printing, please inform the staff immediately.

【二】 LED placement machine

In the general sense, the LED placement machine belongs to the SMT (Surface Mount System) placement machine. With the development of LED technology , the traditional SMT placement machine can not meet the production needs of the LED industry. The placement machine came into being.

The LED placement machine is a SMT placement device specially designed for the LED industry to realize the assembly of large-scale LED circuit boards. Equipment requirements are not high, but require fast speed. The LED placement machine uses the principle of the guide rail or the linear motor to control the driving head; at the same time, it is equipped with a professional anti-adhesive suction nozzle head, so that in the process of placement, the production of defects such as adhesives and materials can be eliminated as much as possible; LED placement machine The tank chain requires more toughness and ductility to ensure its stability and service life.

LED placement machine board operation notes:

1. In the process of running or adjusting the LED placement machine, if an accident occurs, press the emergency stop button quickly, or pull down the power switch to stop the operation immediately.

2, when replacing some parts should be carried out in the state of machine suspension, together with the forced stop button (to avoid misuse by others).

3. When the LED placement machine is under normal conditions, it should be operated under the condition that the equipment is stopped. The condition cannot be stopped especially. There should be more than one person in the side.

4. When the upper plate is on, the plate should be placed on the track parallel to the track and gently pushed forward.

5. When boarding the board, make sure that the board is placed on the belt of the track. Don't let it go, causing the track to open. This causes the board to get stuck, which will cause the track to become a bell mouth for a long time.

[three] reflow soldering machine

Reflow soldering, in surface mount technology (SMT), refers to an ingot-shaped or rod-shaped solder alloy that is melted and re-formed into tin powder (ie, spherical micro-tin balls), and then with organic excipients (flux) The process of blending into a solder paste; the process of printing, stepping on the foot, patching, and remelting and solidifying into a metal solder joint. The welding process is a special process. The operator who is engaged in the special process is trained to be qualified, and the operator strictly operates according to the operation documents, and performs self-inspection and mutual inspection.

Reflow soldering machine operation notes:

1. Be careful not to put the head and hands in the movable range of the machine during operation.

2. When an emergency occurs, please press the red emergency stop switch.

3. Wear high temperature resistant gloves or other

4, open the top cover to cool down

5, can not modify the menu content that is not allowed to enter

6. If the circuit board after the furnace is found to have a virtual welding, short circuit or other problems during the production process, the operator should report it to the supervisor in time.

7. Do not open other switches on the machine when the reflow soldering machine is running.

8. Immediately reflect the fault to the superior, or press the emergency button

[four] SMT maintenance equipment

That means that the inspection process can be added in every process to achieve the purpose of controlling quality.