PCBA Tech - SMT placement machine operation steps flow (on)

SMT placement machine is mainly used in the fields of LED lights, electronic products, and display screens. It has the characteristics of intelligent placement operation, more accurate identification and positioning, and more durability. It is through the functions of absorption-displacement-positioning-placement, etc., without damaging the components and the printed circuit board, the SMC/SMD components can be quickly and accurately mounted to the specified pad positions on the PCB board. The SMT placement machine manufacturer will share with you the complete SMT placement machine operation step process in detail here.

1. Preparation before SMT placement machine

1. Prepare relevant product process documents.

2. Pick up materials (PCB, components) according to the mounting schedule of the product process documents and check them.

3. For PCBs that have been opened, clean and bake them according to the specific conditions such as the length of the unsealing time and whether they are damp or polluted.

4. Check the components after opening, and deal with the damp components in accordance with the management requirements of SMT process components.

5. According to the specifications and types of the components, select the feeder that escapes, and install the component tape feeder correctly. When loading -. The association must align the center of the component with the pickup center of the feeder.

6. Equipment status check:

a. Check that the air pressure of the air compressor should meet the equipment requirements, generally 6kgjf/cm2 ~ 7kgf/cm2.

b. Check and make sure that there are no obstacles in the guide rail, the moving range of the placement head, around the automatic replacement nozzle library, and the pallet rack.

Two, SMT placement machine boot process

1. Turn on the machine in accordance with the equipment safety technical operating regulations.

2. Check whether the air pressure of the placement machine meets the equipment requirements, generally about 5kg/crri2.

3. Turn on the servo.

4. Return all axes of the placement machine to the source point.

5. According to the width of PCB, adjust the width of the guide rail of the placement machine FT1000A36. The width of the guide rail should be greater than the width of the PCB by about Imm, and ensure that the PCB slides freely on the guide rail.

6. Set up and install the PCB positioning device:

1. First, set the PCB positioning method according to the operating rules. Generally, there are two methods of pin positioning and edge positioning.

2. When using pin positioning, install and adjust the position of the positioning pin according to the position of the PCB positioning hole L. Make the positioning pin exactly in the middle of the positioning hole of the PCB to make the PCB go up and down freely.

3. If edge positioning is used, the position of the stopper and the top block must be adjusted according to the outline size of the PCB.

7. Place the PCB support thimble according to the PCB thickness and external dimensions to ensure that the force on the PCB is even and not loose during patching. If it is a double-sided mounting PCB, after the B (first) side is mounted, the position of the PCB support thimble must be re-adjusted to ensure that when the A (second) side is mounted, the PCB support thimble should avoid the already mounted side B. Installed components.

8. After the setting is completed, the PCB can be installed for online programming or patch operation.

Three, SMT placement machine online programming

For products that have completed offline programming, the product program can be directly called, and for products without CAD coordinate files, online programming can be used. Online programming is the process of manually inputting pick-up and placement programs on the placement machine. The pick-up program is completely manually compiled and input. The placement program is an accurate video of the placement position of each patch component on the PCB through the teaching camera, automatically calculates the center coordinate of the component (placement position), and records it to the patch The program table is then optimized manually.

Fourth, install the SMT placement machine feeder

1. Install various components on the material station of the placement machine according to the picking program table prepared by offline programming or online programming.

2. When installing the feeder, it must be installed in place according to the requirements.

3. After the installation is completed, it must be checked by an inspector to ensure that it is correct before the trial paste and production can be carried out.