The Type-C connector is a single connector solution for data, power and A/V applications. Its slim profile is suitable for mobile devices and durable enough for industrial applications. The European Union has recently required electronic equipment to use Type- C-C interface, in view of the increase in the application scenarios of Type-C connectors, performance requirements will be imposed on factors such as high-frequency signals, mechanical characteristics, electrical performance, and environmental changes. Therefore, manufacturers need to conduct a full set of tests and certification schemes when producing related products. The assistance and consultation of professional laboratories can ensure that the products meet the quality conditions and perfectly display the functional requirements; professional laboratories and certification bodies will also conduct relevant tests and verification test contents for environmental tests (Environmental Test) to ensure that manufacturers The products can meet the standards of the association. During the certification process of the association and the verification process of the testing center, manufacturers will also obtain production parameters to facilitate subsequent manufacturing. ;To ensure the reliability and continuity of the product, today we briefly understand the manufacturing process of this interface.
A brief description of the manufacturing process of the Type-C connector. The process can be divided into four main manufacturing steps: Stamping, Plating, Molding, and Assembly.
1. Stamping
The manufacturing process for Type-C connectors usually starts with stamping the plug. Stamping is based on large and medium-sized high-speed stamping machines, and Type-C connectors (plugs) are stamped from thin metal strips. One end of the large roll of metal strip is sent to the front end of the punch press, and the other end is wound around the eccentric wheel and passes through the hydraulic press table of the punch press.
2. Electroplating process
After the stamping of the connector pins is completed, the next process is the electroplating process (PlaTIng); at this stage, the electronic contact surface of the connector will be coated with various metal material coatings, and electroplated with nickel, electrotin and half gold. Avoid air oxidation and improve conductivity. Similar problems to the stamping stage, such as twisted, broken or deformed leads, can also occur when the stamped leads are fed into the plating equipment. Throughout the process of feeding the stamped pins into the plating equipment, the pins can also deform, crack or warp. And shortcomings of this quality are easy to detect based on the techniques described above.
3. Injection molding
Injection molding (Molding) refers to the plastic box seat of the electronic USB connector is to introduce molten plastic into the metal material membrane, and then quickly freeze it. So-called "leakage" occurs when the molten plastic fails to completely fill the film; this is a typical defect that needs to be detected during the injection molding stage. Other defects include stuffed or partially blocked sockets (these must be clean and smooth to properly connect to the pins after assembly). A machine vision system for post-injection quality inspection is relatively simple to implement, as leaks and clogged receptacles in cartridge holders can be easily identified using backlighting. This is a typical defect that must be checked during injection molding. Other disadvantages include full or partial blockage of the socket (must be kept clean and unobstructed to properly mate with the pins in final assembly).
4. Assembly
The last process of Type-C connector manufacturing is finished product assembly (Assembly). There are two ways to connect and assemble the pins that are assembled with the injection molding box seat by electroplating process: individual plugs or combined plugs. Connect one pin at a time; combination plugs are combined into a pair of plugs to form a pair of plugs, that is, several prongs are connected to the box socket at a time. No matter which connection method is used for assembly, the manufacturer needs to detect all plugs for leakage and correct positioning during the assembly stage, to ensure that all pins cannot have all errors and leakage, and must be accurately positioned.
5. Insertion force
The connector insertion force test refers to the force required to insert and pull out the electronic connector at both ends of the mating male and female ends. Insertion force is an important mechanical property and parameter of the connector, and its magnitude affects the feel of the connector and its internal design structure. At present, the most widely used mobile phone board-to-board connector insertion force can be tested by using shrapnel microneedle modules that can transmit current and conduct signals, which is conducive to stability testing. It can transmit large current in the range of 1-50A, the over-current is stable and smooth, and has good connection function. Now we are going to test the insertion force, we first test the durability 10,000 times, the condition is 1 hour 50 hours 200 times.
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