Application and Development of Checkweigher in my country

Online checkweigher machine also known as: sorting scale. It is a medium-low-speed, high-precision online checkweighing equipment, which can be integrated with various production lines and conveying systems. Online check-weighing has gradually become an indispensable link in the current industrial production, especially in the production process of the food and pharmaceutical industries. The online checkweigher is compared with the preset range, and the control unit sends out instructions to reject the unqualified products. At present, the large-scale production of checkweighers in my country is in its infancy, and new national standards and verification procedures are being formulated in line with OIML-R51. Some domestic enterprises mainly produce large-scale checkweighers for the chemical logistics industry. For small-scale and small-scale checkweighers, most domestic enterprises are in the imitation stage due to the technical difficulty and the small division value. Since the automatic checkweigher is used in the online quality inspection line of packaging and logistics, in order to achieve the highest production efficiency, it is required that the product measurement passing speed can reach up to 100~300 times/min, and the highest inspection accuracy can reach 0.2g. The size and measurement speed of the inspected items can automatically determine the appropriate screening and measurement time; when the ROM/RAM, A/D, optoelectronic devices, communications, etc. are abnormal, there are prompts and measures are taken to achieve automatic adjustment and self-diagnosis functions. At the same time, it has ARC NET and ETHERNET network communication functions, so that the system can realize centralized control with the computer combination scale of the previous process, as well as remote control operation and process feedback control. In recent years, products tend to be more compact and multi-functional, and the application of checkweighers integrating metal inspection, X-ray foreign body inspection and sorting. At present, the general metal inspection can detect metal foreign bodies of 0.8~1mm, and the inspection speed can reach 40~60m/min. Since the metal detector cannot detect foreign bodies such as hair, thread, bone, glass, etc., this is the latest X-ray The foreign object checker is applied, and the maximum detection speed can reach 65m/min. At present, countries around the world have begun to further extend the function of the checkweigher to the storage and packing automation management system. The integrated conveying and testing equipment with technologies such as detection, radio frequency automatic identification code, and shape recognition processing has been widely used in logistics and transportation management systems.
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