PCBA Tech - SMT patch programming and process and supply chain

Skills for completing patch programming for SMT patch processing

Many people in the industry are not particularly clear about how the patch programming of SMT patch processing is carried out on automatic patching. For SMT patching, programming is an important processing technology that can effectively improve the processing of patch processing. Work efficiency. Here is a brief introduction to how the placement programming is done on the placement machine.

1. Program editing

1. Call up the optimized program.

2. Make Image images of PCB MarK and partial Mak.

3. Make images for the components that have not been imaged, and register them in the image library.

4. Register the unregistered components in the component library.

5. For multi-tube vibrating feeders with unreasonable emissions, redistribute them according to the length of the device body.

6. Change the multi-pin, narrow-pitch devices and long sockets with larger outlines in the program to Single Pickup, which can improve placement accuracy.

7. Save to check whether there is an error message, and modify the program according to the error message until there is no error message after saving.

2. Proofreading

1. According to the component list in the process file of SMT patch processing, check whether the component name, tag number, model specification of each step in the program is correct, and correct the incorrect part according to the process file.

2. Check whether the components on each feeder station of the placement machine are consistent with the picking program table.

3. Use the main camera on the placement machine to check whether the X and Y coordinates of each step of the component are consistent with the component center on the PCB, and check whether the corner Θ is correct according to the component position diagram in the process file.

4. Copy the completely correct product program to the backup U disk and save it.

5. Production can only be carried out after the proofreading and inspection are completely correct.

Process and supply chain management in SMT patch processing

One, smt patch processing technology monitoring

The monitoring of smt patch processing technology is an important activity to ensure quality and production efficiency. Take the key process reflow soldering process as an example, the setting temperature of the equipment is not equal to the actual temperature of the solder joints on the assembly board. Therefore, the smt patch must monitor the real-time temperature curve, and prevent the occurrence of defects by monitoring the smt process variables. Due to the automatic monitoring and feedback of process parameters, a large investment is required, which is currently not achieved by most domestic enterprises. In this case, the stability of the process can be achieved through manual inspection and monitoring, for example, the company's DFM specifications, the general process of each process, the quality control points of key processes, and the manual timing measurement temperature curve.

2. Supply chain management of smt patch processing plant.

The supply chain management of smt patch processing plants is actually production material management, that is, to strengthen the management of the entire supply chain from material and component manufacturers to distributors to end product manufacturers. Stable supply and quality of raw materials are the basis to ensure long-term stability of SMT quality. Lead-free production material management is more stringent than lead. Enterprises must carefully consider the management of physical flow from the procurement of components and other materials, the identification, storage, and online control of lead-free components PCB, process materials, and until the delivery of lead-free finished products.

Supply chain management mainly controls the following:

1. Strengthen the management of upstream suppliers.

2. Purchasing control (evaluate and certify components, PCBs, and process materials when conditions and necessary).

3. Material preparation.

4. SMT component number and identification.

5. Material management automation.

6. SMT production line setup verification.

7. Traceability and material list.

8. Storage of components, PCBs, and process materials.

9. Train all personnel on the line.