High-precision measuring device in air medium of finished thermistor

Abstract

The invention provides a high-precision measurement device for thermistor finished products in an air medium. The measurement device comprises a feeding mechanism, a test mechanism and a sorting mechanism, wherein an air device is arranged on one side of the feeding mechanism, the feeding mechanism comprises a feeding box body, an automatic discharging mechanism is arranged on one side of the feeding box body, and a clamping conveying mechanism is arranged in the feeding box body. Paper tapes are conveyed into the test mechanism by the clamping conveying mechanism to be detected. Then, after being sorted by the sorting mechanism, the paper tapes are collected. Rails are arranged in the test mechanism and the sorting mechanism. The measurement device adopts PLC control. As the high-precision measurement device adopts an air medium sorting comparison process in measurement, the labor intensity of workers is low, and the production efficiency is high. Three to four equipment can be operated by one person, and measurement in the air medium does not require washing or drying, so that the environment is protected, energy is saved, the production cycle of products is short, labor force is greatly saved, and the quality reliability of the products is greatly improved. The maximum error of the test system is smaller than or equal to 0.02%.

Description

technical field [0001] The invention belongs to the technical field of thermistor processing, and in particular relates to a high-precision measuring device in the air medium of the finished thermistor. Background technique [0002] Thermistors, especially the temperature-measuring NTC thermistors loaded on paper tape, need to be tested after processing. The current detection device generally places the thermistor in a constant temperature oil tank for detection, and then manually sorts it. Measuring in a constant temperature oil tank has low production efficiency and high labor intensity for workers. After sorting and measuring in oil, it needs to be cleaned and dried. There are two more production processes. The waste water after cleaning pollutes the environment, consumes a lot of energy, and has a long production cycle. The efficiency is low, about 5000-6000 per person per shift. [0003] High-precision NTC thermistor measurement is generally measured with a high-precis...

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Problems solved by technology

[0008] When the resistance accuracy of the NTC thermistor is ±0.5%, the measurement temperature error must be within ±0.01°C. To measure a higher-precision NTC thermistor requires a higher-precision oil tank, and a higher-precision oil tank (0.001°C) requires a lot of investment , the cost is very high, and the measurement production efficiency in the oil tank is very low. The following inventions provide a complete solution for measuring higher-precision NTC thermistors, and have achieved major breakthroughs

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