Do You Know The Function And Choice For SMT Nozzle

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, 0805 material corresponding to CN065 suction nozzle, 0603 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.