What are the benefits of reserving process edges for PCB production? 2021-10-25

Pcb The main reasons for the production of reserved process edges are SMT The mounter rail is used to clamp the circuit board and flow through the mounter , Therefore, components that are too close to the track edge are SMT When the sucking nozzle of the chip mounter absorbs components and attaches them to the circuit board , Collision occurs , Unable to complete production , therefore pcb In the process of panel production , To consider subsequent patches and plug-ins , Generally, the process edge is added . that ,Pcb What are the benefits of manufacturing reserved process edges ？

The reserved process edge is used to assist in the welding of the mounting insert PCB The added part of the two or four sides of a board , Mainly for auxiliary production , Do not belong to PCB Part of the board , stay PCBA It can be removed after manufacturing .

Pcb The production of reserved process edges will consume more plates , increase PCB Production costs , So in the design PCB Process edge time , Need to balance economy and manufacturability . For some special circuit boards , Can pass PCB The way of the puzzle leaves the original 2 A process edge or 4 Process side PCB Plate greatly simplified .Smt Patch processing is used in the design of panel splicing , Need to take full account of SMT Track width of the mounter , For over width 350mm The panel needs to be connected with SMT Communicate with the supplier's process engineer .

PCB The flatness of production process edge is also an important part of printed circuit board production . Removing PCB Production process side time , It is necessary to ensure that the process edge is flat , Especially for the circuit board with extremely high assembly accuracy , Any rough edges , This will cause the mounting hole position to shift , To follow up PCBA Assembly brings great trouble .

The above is what Xiao Bian shared today PCB knowledge , Through this article, you must be right “Pcb What are the benefits of manufacturing reserved process edges ” With a certain understanding .

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