Production Process of Board-to-Board Connectors

PublishTime： 2023-07-07 Article Source：Greenconn News

The production process of board-to-board connectors can be roughly divided into four steps:

Stamping: The production process of board-to-board connectors generally begins with the stamping of the plug. Using a large high-speed stamping machine, the connector (plug) is stamped from a thin metal strip. The metal strip is fed into the front end of the stamping machine from a large coil, and the other end is pulled into a wheel through the hydraulic workbench of the stamping machine, which rolls up the stamped products.

Electroplating: After the pins of the connector are stamped, they must be sent to the electroplating section. At this stage, various metal coatings are plated onto the electronic contact surfaces of the connector. Similar issues encountered in the stamping stage, such as pin distortion, breakage, or deformation, can also occur during the process of feeding the stamped pins into the electroplating equipment, making it relatively easy to detect quality defects.

Injection Molding: The plastic housing of the electronic connector is made during the injection molding stage. Typically, molten plastic is injected into a metal mold and then rapidly cooled to form the desired shape. A typical defect that needs to be detected during the injection molding stage is the incomplete filling of the molten plastic into the mold. Other defects include fillings that completely or partially block the insertion holes (these insertion holes must remain clean and unobstructed for proper insertion of pins during final assembly). Machine vision systems are relatively simple and feasible for quality inspection after injection molding, as defects such as leaking in the housing and blockage in the insertion holes can be easily identified via backlighting.

Assembly: The final stage of manufacturing electronic connectors is the assembly of finished products. There are two methods for inserting the electroplated pins into the injection-molded housing: individual insertion or simultaneous insertion. Individual insertion refers to inserting one pin at a time, while simultaneous insertion involves inserting multiple pins into the housing at once. Regardless of the insertion method used, manufacturers require that all pins be checked for completeness, and proper positioning, and another routine inspection task relates to measuring the spacing on the mating surface of the connector.

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