Application and Development of Online Checkweigher
, also known as online checkweigher machine, also known as sorting scale or online sorting machine, is a medium-to-low-speed, high-precision online checkweighing equipment, which can be integrated with various production lines and conveying systems, and is mainly used for online Check whether the product weight is qualified, whether the package lacks parts or product weight classification. Online checkweighing has gradually become an indispensable link in industrial production, especially in the production process of food and pharmaceutical industries. The checkweigher is compared with the preset range, and the control unit issues an instruction to reject products with unqualified weights. Online currently, 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 companies mainly produce large-size checkweighers used in the chemical logistics industry. For small-size and small-range checkweighers, most domestic companies are in the imitating stage due to the technical difficulty and the small scale value. Since the checkweigher machine is used in the online quality inspection line of packaging logistics, in order to achieve the highest production efficiency, the product measurement passing speed is required to reach 100 to 300 times/min, and the highest detection 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, photoelectric device, communication, etc. are abnormal, prompts and measures are taken to realize 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 weigher of the previous process, as well as remote remote control operation and process feedback control. In recent years, products have become more compact and multi-functional, and are used for metal inspection, X-ray foreign body inspection and sorting integrated checkweighers. At present, the general metal inspection can detect metal foreign objects of 0.8~1mm, and the inspection speed can reach 40~60m/min. Because the metal detector can not detect foreign objects such as hair, thread, bone, glass, etc., this is a kind of latest X-ray The foreign body inspector was born, and the highest detection speed can reach 65m/min. At present, countries around the world have begun to further expand the function of the checkweigher machine to the automated management system for storage and packing, which is a collection of weight sorting and packing geometric dimensions. The integrated transportation inspection equipment with technologies such as detection, radio frequency automatic identification coding, and shape recognition processing has been widely used in logistics and transportation management systems.
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