PCBA Tech - Maintenance of SMT solenoid valve and PNP camera

Maintain the solenoid valve of the SMT placement machine

In our electronic surface mounting process, in order to improve efficiency and save costs, we must maintain various instruments and components on a regular basis. The following are the maintenance instructions for the solenoid valve of the SMT placement machine:

1. When operating manually, first determine the safety of the laying machine;

2. Regularly drain the condensed water accumulated in the air filter.

3. Reduce the use of solenoid valves. Check the operation of the solenoid valve switch of the laying machine once a month to prevent it from malfunctioning.

4. When disassembling the placement machine, be sure to install equipment to prevent the driven object from falling and not working properly. After completing this step, please cut off the air source and power supply, and pay attention to the residual air pressure.

5. The maintenance steps of the placement machine should be carried out in the order of the operation manual as far as possible.

Adjust the camera of the PNP machine

In the automatic production line, the placement machine is a more practical form of production, and it is a fully automatic production machine. This machine is or has seen years of research and development results. So far, it has also been used in the SMT placement industry. Do you know the role of placement machine works?, Let's take a look

1. S system: This system is an indispensable part of the movement of the assembler. It not only affects the accuracy and speed of the assembly machine, but also controls the movement mode of the assembly machine, the position of the X, Y, and Z axes.

2. Driving: When we transport the printed circuit board through the laying machine, it is usually conductive fabric. The printed circuit board based on the circuit board can be transferred in the belt drive system, and the PCB can be transferred to the designated location we want, and then sent to the next target location for work. Generally, there are two kinds of conductive fabrics in smt machines.

3. Segmented driving: In order to reduce the driving time, the driving mode is divided into three parts to achieve different driving processes.

4. All-in-one drive: The optical positioning system is used to position the PCB board through the support platform, which can greatly improve the installation accuracy. The disadvantage is that the positioning time is long.

5.T Chassis: The rigging frame is the basic structure of rigging used for moving, positioning, feeding, driving and other operations, which can usually meet our daily strength needs. However, in the purchase process, we must also look at the frame of what material.

The laying machines we use now usually have two cameras that perform their functions. Their mutual cooperation promotes the rapid operation of the laying machine. The upper chamber can better help the laying machine improve efficiency and precision. The camera can quickly identify components and increase the placement speed. Now, let us understand how to debug the cabinet of the laying machine.

One: Adjust the upper room of the laying machine

1: Check whether the vertical angle of the camera is parallel

2: On the positioning machine, set the camera's ' mark point field of view to 10mm, working distance to 60mm, and pixels to 64 or 55.6.

3: Match the No. 1 nozzle with the points on the PCB circuit board, neutralize the center image of the selected point between the camera and the PCB, and fill in the result in the corresponding position in the parameter.

2: Adjust the lower room of the laying machine

1: Set the concentricity of the suction nozzle not to exceed 0.1mm, the zero position is 6mm away from the guide rail, the zero position offset is 4mm, and the cavity height is 3mm

2: Set the definition of the component camera to be consistent, and the offset cannot exceed 20 pixels

3: Set the working distance of the installed camera to 10cm