Industry applications
IC high-speed sorting machine - rotary tower sorting machine
Industry background
With the surge in demand in the emerging smart device market, the application and development of IC chips have been greatly improved, commonly used in fields such as automotive electronics and consumer electronics, 5G, the Internet of Things, and industrial robotics industry.
At the same time, with the continuous development of semiconductor technology, the chip linewidth size is constantly decreasing, and the manufacturing process is gradually becoming more complex. At present, the international 7nm process requires nearly 2000 processes, and advanced processes and complex processes will continue to increase the demand for advanced equipment.
operational principle
Sorting machines are mainly used in the chip design inspection stage and the final product testing (FT) stage, and are one of the important testing equipment in the final testing stage.
The rotary tower sorting machine is particularly suitable for marking, testing, sorting, and packaging of small chip semiconductor discrete components. It is a high-speed sorting machine with a main turntable in the center and various testing stations arranged uniformly around the main motor in order. It usually includes multiple models such as 16 and 24 stations.
The product is delivered to the main motor turntable through the feeding structure;
The main motor turntable sucks the chip and rotates it to deliver the product to the next workstation;
Working at the loading station;
The main motor turntable draws a new product.
characteristic
Every time the main motor rotates one grid, it will send the product to each workstation, and the workstation with the product will conduct testing and other processing on the product. This cycle repeats itself
Multiple workstations will process multiple products at the same time
Small footprint, high accuracy, and fast speed
Technical difficulties
The advantage of a rotary tower sorting machine is that the equipment has a high hourly output, and the fastest equipment on the current market can complete testing of 50-60000 or more chips per hour.
At present, the self-sufficiency rate of domestically produced turret sorting machines is the lowest, as their UPH (number of sorting chips per hour) is the highest type of sorting machine. Under high-speed operation, it is necessary to ensure both repeated positioning accuracy and lower Jam Rate (failure shutdown rate), which puts higher requirements on the development of sorting machine equipment.
Especially with the rapid development of the semiconductor industry, factors such as the operating speed, rotational accuracy, vibration amplitude, and jumping amplitude of the main turntable station (high-speed turntable) determine the production efficiency and stability of the high-speed sorting machine, which is the core of the efficient operation of the entire equipment. This also requires increasingly high precision, speed, and stability of the turntable direct drive motor used in high-speed turntable stations.
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Technical requirements for conventional turret test sorting machines
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16-24 workstations/rotation angle: 15 °~22.5 °
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Single station rotation time: 18-22ms
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Rotary table inertia: 0.003~0.020 kg.m2
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Test time: 35-60ms
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Capacity: 40-60 k UPH
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Average movement time of Z-axis down/up: 3-20ms
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IELTS application solution
Main turntable direct drive scheme
The rotation of the main turntable is one of the most important movements of a high-speed sorting machine, and the driving condition of the main turntable depends on the performance of the selected main motor. The Yacobesi ADR-H series can meet the motion curve of the rotary tower application sufficiently, and is very suitable for high-precision movement, high speed response requirements, and high end jump requirements.
From the perspective of motion control, this process is technically challenging: it requires the turret motor to operate at very high speeds and withstand vibrations. Equipped with a servo driver customized by Yacobesi for the direct drive motor of the high-speed sorting machine, the speed stability is further improved.