Why should the V-CUT line be designed for the PCB circuit board? What is its function? Are there any special requirements in the design process?
The PCB circuit board itself has a certain strength and hardness. The purpose of designing the V-CUT is mainly to facilitate the separation of the circuit board after the circuit board is assembled. The V-CUT is too shallow, and the circuit board cannot be easily separated after the plug-in is completed. Excessive force will damage the components. The V-CUT is too deep, and it is easy to break the board and drop the tin bath during wave soldering or reflow soldering after the patch, thus affecting the production of the next process.
The so-called V-CUT is that before the solder mask is made, the project will assemble the board according to the drawing requirements given by the customer and make each V-CUT line. In the case of mass production, the delivery of small boards into small boards affects production and reduces efficiency, and the use of V-CUT production to make panels can increase output and save time and board utilization.
For example: 1. There are customers who specifically request to keep the unilateral V-CUT, and the other side of the V-CUT needs to be broken off and shipped. In this way, the side that needs to be reserved should be dug out as much as possible according to the V-CUT requirement 1\/3 of the board thickness. Yes, when the V-CUT needs to be broken off, the V-CUT should be as deep as possible, and 1\/4 of the board thickness should be reserved to facilitate the subsequent process of breaking the board. When debugging and installing the V-CUT knife, it is necessary to distinguish which V-CUT is installed. The side needs to be deeper and which one needs to be shallower, and it needs to be clearly distinguished on the computer. 2.2 The distance between the single lines on the side is small, the V-CUT can be manually operated, and the V-CUT blade is installed according to the required V-CUT board drawings. Adjust the spacing, fix the position of the blade, and adjust the depth and thickness of the V-CUT according to customer requirements before mass production can begin. 3. For the V-CUT with a thickness of only 0.2mm, it is not easy to operate whether it is automatic or manual. , The board is too thin, so it is easy to break the board when operating on the V-CUT machine. For such PCB circuit boards, we usually use laser V-CUT.
