Electronic connector manufacturing processes
Click:3414Time:2013-10-24 10:58:41
Electronic connector manufacturing processes
A wide range of electronic connectors, but the manufacturing process is basically the same, and can be divided into the following four stages:
Press (Stamping)
Plating (Plating)
Injection (Molding)
Assembly (Assembly)
Stamping
Electronic connector manufacturing process is generally started from the punch pin. Through large-scale high-speed stamping machines, electronic connector (pin) by stamping a thin metal band formed. Large metal stamping machine with a front end into the other end tied through the press table in the volumes of hydraulic pulley, the pulley roll out and roll with a good metal stamping out the finished product.
Plating
Connector pins should be sent after completion of plating stamping Section. At this stage, the electronic connector contacts on the surface of the plated metal coating. And stamping stages similar to a class of problems, such as pins twisted, broken or deformed, is also good at pressing the pin into the process of electroplating equipment there. Through the technology described in this paper, these quality defects are easily detected out.
However, for most machine vision systems suppliers, the process of plating the emergence of many quality defects detection system is also part of the "forbidden zone." Electronic connector manufacturers are looking detection system can detect on the surface of the connector pin plating various inconsistencies, such as small scratches and pinhole defects. Despite these flaws for other products (such as aluminum cans or other relatively flat bottom surface) is very easy to be identified out; but most electronic connectors with irregular angles and surface design, visual inspection system is difficult to get sufficient to identify these subtle defects desired image.
Because certain types of pins to be plated with metal layers, manufacturers also want to test the system to distinguish between the various metal coating in order to test whether the proper place and proportion. This is for the use of black and white camera vision system is a very difficult task, because different gray-scale images of metal coating is actually almost the same. Although color vision camera system can successfully distinguish between these different metal coating, but because of the irregular surface of the coating angle and reflection effects, lighting, difficult problems remain.
Connector plating and coating characteristics described refer to a variety of forum posts: connector plating problems
Injection
Electronic connectors plastic box seat in the injection molding stage is made. The usual process is to melt the plastic into the metal membranes, and then rapid cooling forming. When the molten plastic membranes could not completely filled when the so-called "leak? Quot; (Short Shots), which is the injection phase of a typical defects to be detected. Other deficiencies include the filling or partial access jack plug (these jack must be kept clean and smooth access to the final assembly with the pin in the correct patch) due to use of the backlight can easily identify the box seat, and then jack to plug the gaps, so the completion of quality testing for the injection molding machine vision system is relatively simple.
Assembly
Electronic connectors manufactured by the final assembly stage is finished. The plating injection molding box seat with a good pin plug in two ways: individually or in combination on the plug on the plug. Separately for each patch on the plug is a pin; combination of a multiple pin is inserted simultaneously with the box seat patch. No matter in what way plug, manufacturers are required in the assembly stage of testing whether there are gaps in all the pins and position correct; another type of routine inspection tasks and the connector is measured with the surface of the pitch.
And pressing stages, the connector assembly is also made of automatic detection systems in detecting the speed challenge. While most assembly-line beat one or two per second, but each through the camera connector, the visual system are usually required to complete a number of different test items. Thus detection speed again become an important performance indicators.
After assembly, connector dimensions in the order of magnitude larger than the size allowed by a single pin tolerances. This is also the visual inspection system poses another problem. For example: Some dimensions of the connector box seat more than a foot and have hundreds of pins, each pin position detection accuracy must be in a few thousandths of an inch size range. Clearly, the image can not be completed on a one-foot connector testing, visual inspection of each system can only detect a small field of view the quality of a limited number of pins. To complete the connector testing in two ways: using multiple cameras (the system cost increase); or when the connector in the front of the camera through a camera is triggered when a continuous, continuous intake of the visual system of single Zhen image "stitching" up to determine if the quality throughout the connector. The latter approach is PPT Vision Inspection System after completion of the connector assembly is usually used detection method.
"Actual position" (True Position) of the connector assembly test is another requirement of the detection system. The "actual position" refers to the top of each pin to a specified distance between the baseline design. Visual inspection system must be made in the detection of the image of this imaginary baseline to measure each pin vertex of the "real position" and determine whether they meet quality standards. However, for the delineation of the baseline reference point on the actual connector is often not visible, or sometimes in another plane and the lens can not be the same at the same time be seen. Even in some cases had to rub off the connector box on the plastic body to determine the position of this baseline. Here indeed there is a related topic - can detect design.
Can detect design (Inspectablity)
As the manufacturers to improve production efficiency and product quality and reduce production costs continue to demand a new machine vision systems are more widely used. When a variety of vision systems have become more popular, people become more familiar with the characteristics of these detection systems, and learned in the design of new products, product quality into account detectability. For example, if you want to have a baseline to detect "real position" should be considered in the design of the connector to the baseline of this visibility.
Shenzhen Hua Zhongxin Technology Co., Ltd. specializes in cable and related products development, production, sales and service of science and technology enterprises, production and R & D all kinds of electronic cables. Company products include: various types of UL cable, low voltage cabinet sets of cables, communication cables, data cable, monitor cable, cell phone charger cables, IEEE1394 cables, USB series cable, audio cable, computer cable ties and other connections class cable wire. Companies in good faith, innovation and entrepreneurial spirit, with its highly effective management team, leading technical strength, perfect service system, invite friends in the industry and sincere cooperation, we would like to develop together! Grow together! Create brilliant!
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