PCBA Tech - Causes of wrong materials in PCBA manufacturing and Improvement Countermeasures

How to prevent wrong materials in PCBA manufacturing? PCBA manufacturing technology equipment belongs to high price fast automatic equipment in PCBA manufacturing workshop. As long as the production starts, the production can complete the order task in a short time. However, there is also the risk that PCBA manufacturing technicians load the wrong material tray. If there is an error, the output of the whole instruction sheet is all ng products, which will bring huge losses to PCBA manufacturing. Therefore, at present, PCBA manufacturing technology workshop will organize considerable resources to carefully check the bill of materials before PCBA manufacturing machine starts production to ensure that everything is correct, Start production after achieving smooth production effect. However, at present, most PCBA manufacturing machines rely on manual loading inspection and verification. The main sources of PCBA manufacturing errors are as follows:

(1) The material identification of the material reel is wrong, and the material name does not correspond to the physical object;

(2) Wrong material preparation quantity of material reel, especially insufficient quantity;

(3) The feeder number corresponds to the material reel one by one and is copied manually, which is likely to copy the wrong data;

(4) After the feeder is loaded, it is placed in the wrong order when it is pushed into the PCBA manufacturing machine.

(5) The fundamental reason is that manual operation will inevitably lead to omissions at any time,

PCBA manufacturer use PCBA manufacturing error prevention system with PDA to automatically check whether the materials are wrong and minimize the occurrence of wrong materials in order to solve the mistakes that are easy to occur in the manual material alignment process of PCBA manufacturing technology.

The method to realize error prevention: the combination of software and hardware, and the use of bar code technology, the system automatically matches whether the materials used in engineering BOM, station list and actual operation are correct.

The key steps for PCBA manufacturing and processing plant to realize error proofing are as follows:

1. The technical operator of PCBA manufacturing machine can import the location table of the mounter with one key in the system and automatically compare the system BOM, so as to effectively prevent the error of the location table.

2. When the production line employees in PCBA manufacturing technology workshop load and receive materials, scan the station number on the machine with a scanning gun, and then scan the bar code label on the material. The PCBA manufacturing technology equipment machine system will automatically check whether the loading is correct. If there is an error, the PCBA manufacturing machine system will automatically alarm and lock the line. The alarm can be released only after IPQC confirms the reason and enters the password, Employees receive materials without permission and alarm and stop the line.

3. The station confirmed by the production line scanning of PCBA manufacturing technology workshop will prompt the measured value on the computer of IPQC. IPQC transmits the measured value data to the system through the bridge instrument, and the PCBA manufacturing machine system will automatically determine the measured value results.

4. The PCBA manufacturing technology workshop group can start production only after all the measured values of IPQC for the first feeding pass.