Talking about the common problems of manual patch proofing

As the economy develops and technology advances,Manual patch proofingThe competition in the industry is getting fiercer. Before mass production, some electronic product manufacturers usually conduct small-batch patch proofing first, so that the shortcomings of the production samples can be found first, and then make improvements, while the proofing of small-batch components generally uses manual patching. Proof. However, since manual patch proofing mainly relies on the proficiency and experience of the operator, there will inevitably be some problems, as follows:

One is that the chip capacity, transistor offset, and IC chip offset are prone to occur during the manual placement and proofing process. Although there are many reasons for these phenomena, the main reason is that the placement of the components is not aligned and the printing is started, or the work table is not flat. Therefore, the manual placement and proofing must ensure that the placement of the components is before printing. It has been aligned and the workbench has been adjusted in place before proceeding to the next process.

The second is the phenomenon that IC chips are easily connected to tin or less tin. This happens because during the manual placement and proofing process, the speed of the squeegee of the printing equipment is incorrect, too fast or too slow, will cause this situation, and the pressure of the squeegee during printing is too large or too small This situation can also occur, so the printing speed should be controlled and the squeegee pressure should be moderate when performing manual patch proofing operations.

To sum up, in the process of manual patching and proofing, some common problems of manual operation are prone to occur, that is, the quality of the patch is good and bad, and it can not be unified; without automatic centering of the machine, it is easy to deviate from the patch; Need to manually adjust the speed and pressure of the scraper, resulting in low efficiency and poor quality. These problems can be solved almost perfectly for the automatic placement machine equipment. Therefore, if the order is not too small, it is generally not recommended to use manual placement proofing.