The driving mechanism of the sample system of automatic analyzer
time£º2017/9/4 click£º5638
Automatic biochemical analyzer is an instrument for automatic operation of clinical biochemical analysis sampling, reagent, interference, mixing, thermal insulation reaction, detection, data processing, results display and output, and cleaning. The automatic biochemical analyzer sampling device is completed by an automatic sampling system. The mechanical actuator in the system generally includes: cantilever mechanism and drive mechanism. The current driving mechanism in China generally uses rotating stepper motors and transmission mechanisms. The traditional rotating mechanism is large in size, complex in structure, and noisy, and it can not achieve high-precision positioning. At the same time, its life can not be guaranteed due to mechanical wear. Affected the overall quality and grade of the product. The linear motor makes up for the above defects with high precision and high reliability and realizes the accurate sampling and automatic loading of the automatic biochemical analyzer.
Due to the conversion of the rotation to the linear motion of the linear stepper motor, the cantilever mechanism is directly connected with the motor. While the mechanism is as compact as possible, the mechanical mechanism without intermediate transmission can achieve higher accuracy and higher life expectancy.
The structural characteristics of the linear stepping motor bring about its convenience in use. In fact, the reason why the linear motor has such a successful application in the field of automatic biochemical analysis is that its concise, accurate, sensitive and high reliability characteristics meet the requirements of the automatic biochemical analyzer for linear motion control performance. The linear stepping motor has higher transmission efficiency compared with the transmission mechanism commonly used in the automatic biochemical analyzer such as gear rack drive or synchronous belt drive. At the same time, the specialized linear transmission manufacturing process guarantees the high life of the overall mechanism. Under normal load conditions, the motor can reach at least 5 million cycles.
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Linear motor