Knowledge & Steps You Need to Know About SMT Pick ...
Knowledge & Steps You Need to Know About SMT Pick ...
Many novices do not have enough understanding of smt pick and place machine, it will cause a lot of trouble.
1. What should a novice know about SMT pick and place machine programming?
1) Positioning accuracy
What is positioning accuracy? Those who have had a rough understanding of the mechanical field must be familiar with this vocabulary. The higher the positioning accuracy of the smt pick and place machine, the smaller the offset error of the components from the target placement position of the circuit board. The positioning accuracy of the mounting head on the XY rail movement accuracy, Z axis rotation accuracy, CCD resolution, the size of circuit board design component and other errors will affect the overall positioning accuracy of the smt pick and place machine.
2) Placement speed
Speed is an indicator that people are most concerned about when buying smt pick and place machines. Smt pick and place machines are divided into high-speed, medium-speed, and low-speed machines. Multi-function placement machines generally have a slower placement speed, but have a wider placement range.
High-speed placement machines are mainly used in the field of sticker light. Because the lighting components do not require high precision. High-speed placement helps manufacturers improve production efficiency. Therefore, many placement machine buyers will give priority to the LED placement machine with a more obvious price advantage.
3) Placement rate
The placement rate is not the performance index of the smt pick and place machine itself. In the actual production process, there will be phenomena such as reverse placement, misalignment, and missing placement. The placement rate refers to the ratio of the actual placement component quantity and the picked up component quantity within a certain time.
The calculation formula is as follows: Placement rate = (number of components picked up-total number of components) / number of components picked X 100%.
4) Programming operation
The current placement equipment is basically controlled and programmed by a PC computer. If the novice operates smt pick abd place machine programming, it is better to adjust to the native language program to make it easier to use.
2. What are the programming steps of SMT pick and place machine?
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The smt pick and place machine is the core equipment of the SMT production line, which affects the production capacity and efficiency of the entire production line. Today, Today, I will introduce the programming steps of the smt pick and place machine.
1) Start the program file
Export the file adapted to the machine format according to the BOM format provided by the customer, and then start the coordinate file.
2) Input PCB data
First, input the value of circuit board area, the value of the X axis, Y axis, and Z axis. Then set the origin coordinate parameters according to the regulations, enter the number of panels in the X and Y directions, and the distance between adjacent panels. If there is no PCB, the number of PCBs in the X-axis and Y-axis directions is 1, and the distance between adjacent PCBs is 0.
3) Establish a component library
Input the name, type, nozzle specification, rack type, packaging type and other parameters of the mounting component according to the form provided by the customer, and save it in the component library.
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How SMT Pick and Place Machine Works?
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Component Feeding: The pick and place machine is equipped with a system of feeders that hold the electronic components, such as resistors, capacitors, ICs, and connectors. These feeders can be tape feeders, tray feeders, or bulk feeders depending on the component type and packaging.
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Component Recognition: The pick and place machine utilizes vision systems and sensors to identify and locate the components in the feeders. This involves capturing images, analyzing patterns, and using algorithms to determine the position, orientation, and dimensions of each component.
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PCB Alignment: The PCB is positioned on the machine's work area, typically on a conveyor or a dedicated fixture. The pick and place machine uses alignment mechanisms, such as fiducial marks or optical sensors, to precisely position the PCB in the correct orientation.
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Component Pickup: Once the machine has identified the components and aligned the PCB, it employs a robotic arm or gantry system with vacuum nozzles or specialized tools to pick up the components from the feeders. The selection of the appropriate tool and nozzle depends on the component type, size, and handling requirements.
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Component Placement: The robotic arm moves the component to the designated location on the PCB. The machine uses the vision system and precision controls to align the component with the correct solder pads or mounting locations on the PCB.
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Component Placement Verification: After the component is placed, the pick and place machine often employs vision systems or sensors to verify the accuracy of the placement. This helps detect any misalignment or defects in real-time and ensures the component is correctly seated on the PCB.
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Repeat Process: The pick and place machine repeats the above steps for each component on the PCB, working in a sequential or simultaneous manner depending on the machine's capabilities. This process is highly automated and can handle hundreds or thousands of components per minute, depending on the machine's speed and complexity.
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Soldering: Once all components are placed on the PCB, it is typically transferred to a separate process, such as an SMT reflow oven, where the solder paste is melted to create reliable electrical connections between the components and the PCB.
If you want to learn more, please visit our website Smt Machine Accessories.
A pick and place machine is a robotic assembly system used in the surface mount technology (SMT) process to accurately place electronic components onto a printed circuit board (PCB). Here's a general overview of how a pick and place machine works:
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