Generally speaking, the SMT industry knows that the SMT nozzle is a key component of the SMT machine. It is used to pick up and place SMT components. There are many types of SMT nozzles on the market, including steel, ceramics, plastic steel, plastic, aluminum alloy, and iron. According to the shape, there are round holes, square holes, V-shaped, etc., and there are many kinds according to the different sizes.
You can find more information on our web, so please take a look.
1. Choose by the nozzle shape of the placement machine:
The nozzle shape has square hole, round hole, V groove, etc. Custom-made pick nozzles generally choose flat suction points according to the shape of the material. Some are made as elongated nozzles, and the grooves that extend the material are used for suction. Some are made into a back shape according to the edge of the material, and some are two-sided. Use a flat surface at the end and build a bridge if the middle is uneven. Some materials are sticky and are not easy to discharge, so some grooves should be made in the nozzle wall or made into rubber heads.
2. Choose by the material of the nozzle of the placement machine:
a. Plastic nozzle: When the surface of the material is uneven or the material is sticky, it is suitable to choose the plastic nozzle, but the life of the plastic pick nozzle is not long. It is recommended to buy more plastic nozzles for spare when ordering the plastic pick nozzle. When the nozzle tip is worn out, you can directly replace the glue nozzle tip yourself.
b. Tungsten steel nozzle: the tungsten steel nozzle is strong and durable, but it is easy to turn white. Friends who are not afraid of trouble, or SMT newcomers can choose the tungsten steel nozzle. If it becomes white, use an oil-based pen to paint, and you can continue to use it.
c. Diamond steel nozzle: sturdy, easy to use, never whitish, but very expensive and not cost-effective.
d. Ceramic nozzle: The ceramic nozzle is never white, but it is brittle and easy to break. Careful use can avoid or reduce the occurrence of breakage.
3. Choose by the size of the nozzle of the placement machine:
For standard materials, the nozzle specifications are basically fixed. For example, materials correspond to CN065 nozzles, materials correspond to CN040 nozzles and so on. When some materials are not big or small, and have strange shapes, the nozzle needs to be customized.
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The SMT pick and place nozzles are not only the key part of the placement machine to paste and release the components that are sucked, but also the background when the camera of the optical vision system takes pictures. It mainly uses the suction effect of vacuum to suck the components. Use air blowing to put the components adsorbed on the suction nozzle to the coordinate position of the circuit board.
When the suction nozzle of the pick and place machine sucks components, in order to achieve the ideal situation, it is necessary to ensure that the center of the component, the center of the suction nozzle, and the space center of the obtained image should be coincident, and the adjustment of the optical vision system actually requires compensate the deviation caused by this non-coincidence in actual work.
Different mounting components need different suction nozzles to suck. Almost every pick nozzle will have a reflective background, which is mainly to have a good background when the image is taken, so as to ensure that the target information is accurately highlighted when the image is processed. The SMT nozzles are used as the background when extracting the image. The image contrast of the component is enhanced and more clearly visible.
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Generally engaged in the SMT industry are know SMT nozzle is a key role of SMT machine components, with it to absorb and place SMT components, SMT nozzle on the market are various, according to the material divided into tungsten steel, diamond steel, ceramics, plastic steel, plastic, aluminum, iron, etc.. According to the shape of the round hole, square hole, V - shaped, according to the size is divided into a variety of. Now I will share with you the SMT nozzle and how to choose.
I. The function of SMT nozzle of the placement machine
The SMT nozzle is not only the key part of the SMT to attach and put the absorbed components, but also the background of the camera of the optical vision system when it takes pictures. It mainly USES vacuum adsorption to absorb the components, and USES air blowing to put the absorbed components on the coordinate position of the circuit board.
When the placement machine suction element, to achieve the ideal situation must ensure that the center of the element, the center of the suction nozzle and the spatial center of the obtained image should be coincident, and the adjustment of the optical vision system is actually to compensate for the deviation caused by this non-coincidence in the actual work.
Different mounting elements require different suction nozzles. Almost every suction nozzle has a reflected background, which is mainly to have a good background during image uptake, so as to ensure the accurate highlight of the target information during image processing. When the suction nozzle is extracted from the image, the suction nozzle is used as the background, so that the image contrast of components can be enhanced and more clearly visible.
II. SMT nozzle selection
1- Select the material of SMT nozzle:
A. Tungsten steel nozzle: tungsten steel nozzle strong, durable, but easy to white, trouble friends, or SMT new people can choose tungsten steel nozzle, white with an oily pen, can continue to use.
B. Ceramic suction nozzle: Ceramic suction nozzle will never be white, but it is very fragile and easy to break. Careful use can avoid or reduce the occurrence of fracture.
C. Diamond steel suction nozzle: strong, easy to use, never white, but very expensive, cost-effective.
D. Glue head suction nozzle: when the surface of the material is not smooth or sticky, it is suitable to choose the glue head suction nozzle, but the life of the glue head suction nozzle is not long. It is recommended to buy more glue head suction nozzle to spare, when the mouth is worn, you can directly change the glue head.
2-Select the size of SMT nozzle of the placement machine:
Standard specifications of the material, nozzle specifications are basically fixed, take Samsung SM as an example, material corresponding to CN065 suction nozzle, material corresponding to CN040 suction nozzle and so on, when some material is not big or small, strange shape, you need to customize the suction nozzle.
3-Select through the suction nozzle shape of the placement machine:
SMT nozzle shape has square hole, circular pass, V groove and so on. Custom-made suction nozzle, generally according to the shape of the material, select the flat suction point, some make elongated suction nozzle, stretch feed groove plane to absorb, some according to the edge of the material, made back font, some ends with a plane, uneven in the middle, you want to build a bridge. Some materials are sticky, it is not good to put materials, to the wall of the suction nozzle to cut some grooves, or make plastic head.
For more information, please visit Smt Nozzle Types.