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.
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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.
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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Relate NewsThis article describes a selection of our most widely used nozzles in Surface Mount Applications.
Our machines are designed to match the Juki type 5xx nozzles, so they are compatible with all types of heads of PPM series Pick and Place Machine. A wide selection of nozzles provide effective placement solutions.There are eight standard 5xx nozzles, ranging from 501 to 508.
NOZZLE SELECTION
Nozzle selection depends on the type and the outer dimensions of the components. The nozzle numbers and the vacuum pressures in the production program data are defined according to the minimum width or diameter D of the components to be picked. When selecting nozzles for non-standard shape components, the nozzle numbers and the vacuum pressures are to be entered manually, in the production program data.
1. Flat Chip
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type Flat Chip 600 300 300 501 Flat Chip 500 200 502 Flat Chip 800 300 503 Flat Chip 400 503 Flat Chip 500 504 Flat Chip 500 505 Flat Chip 500 505 Flat Chip 500 5052. MELFS
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type MELF Φ - 510 MELF Φ - 510 MELF Φ - 510 MELF Φ - 5113. Tantalum Capacitors Inductors / Potentiometers
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type Potentionmeter 505 Potentionmeter 506 Potentionmeter 506 Inductor Chip 504 Inductor Chip 505 Inductor Ferrite Core 506 Tantalum Capacitor 503 Tantalum Capacitor 504 Tantalum Capacitor 5054. Electrolytic Capacitors
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type Electrolytic Capacitor Φ 505 Electrolytic Capacitor Φ 506 Electrolytic Capacitor Φ 506 Electrolytic Capacitor Φ 506 Electrolytic Capacitor Φ 506 Electrolytic Capacitor Φ 507 Electrolytic Capacitor Φ 507 Electrolytic Capacitor Φ 5085. Transistors / Diodes
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type Transistor SC90 800 700 503 Transistor SOT323 1250 900 503 Transistor SOT343 503 Transistor SOT353 1250 503 Transistor SOT363 1250 503 Transistor SOT23 1300 950 503 Transistor SOT143 1600 950 504 Transistor SOT25 1600 504 Transistor SOT26 504 Transistor DPAK 506 Diode SOD123 504 Diode SOD323 5036. Small Outlines
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type SO6 * 1.27p 506 SO8 * 1.27p 6000 506 SO14 * 1.27p 6000 506 SO16 * 1.27p 6000 506 SO8L * 1.27p 10300 508 SO14L * 1.27p 0 508 SO16L * 1.27p 10300 508 SO18L * 1.27p 10300 508 SO20L * 1.27p 508 SO24L * 1.27p 508 SO28L * 1.27p 508 SO32L * 1.27p 508 SO40L * 1.27p 508 SOJ24 * 1.27p 507 SOJ26 * 1.27p 507 SOJ28 * 1.27p 507 SOJ32 * 1.27p 507 TSOP24 * 0.5p 506 TSOP32 * 0.5p 507 TSOP40 * 0.5p 508 SSOP8 * 0.65p 507 SSOP14* 0.65p 507 SSOP16 * 0.65p 507 SSOP18 * 0.65p 507 SSOP20 * 0.65p 507 SSOP22 * 0.65p 507 SSOP24 * 0.65p 507 SSOP28 * 0.65p 507 SSOP30 * 0.65p 507 SSOP34 * 0.65p 508 SSOP36 * 0.65p 508 SSOP38 * 0.65p 507 SSOP44 * 0.65p 508 SSOP48 * 0.65p 508 SSOP56* 0.65p 508 SSOP64 * 0.65p 508 7. Plastic Leaded Chip Carriers Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type PLCC20 *1.27p 9850 507 PLCC28 *1.27p 0 508 PLCC44 *1.27p 0 508 PLCC52 *1.27p 0 508 PLCC68 *1.27p 0 508 PLCC84 *1.27p 0 508 PLCC100 *1.27p 508 PLCC124 *1.27p 0 5088. PLCC Sockets
Component Designation Length(μm) Width(μm) Height(μm) Nozzle Type Socket PLCC28 0 508 Socket PLCC32 0 1500 508 Socket PLCC44 0 1500 508 Socket PLCC52 0 1500 508 Socket PLCC68 0 1500 508 Socket PLCC84 0 1500 5089. Quad Flat Packs
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