The working principle of the checkweigher, the working process of the checkweigher

The checkweigher is also called the sorting machine, a kind of automatic checkweighing equipment widely used in the production line of the pharmaceutical, food, chemical and other industries. The checkweigher machine can detect overweight and underweight unqualified products in the production line in real time. The birth of the checkweigher greatly saves the labor cost of the enterprise and improves the production quality of the product. Nowadays, more and more companies are beginning to use checkweighers. So what is the working principle of the checkweigher and how does the checkweigher work? Let's take a look now! ! ! The working principle of the checkweigher Before working, the automatic checkweigher needs to set the speed of the feeding conveyor (you need to pay attention when setting the speed. During the working process of the checkweigher, only one product can be on the weighing platform. In this way, the result of the weighing can be accurate), and then when the product enters the conveyor, the system can identify and weigh with external signals, and in this process, the system will select the signal in the signal stable area for processing to obtain the product Weight information. Then divide the products of different weights according to the required specifications for screening. working process The first step of the checkweigher workflow: weighing and preparing products to enter the front conveyor belt of the checkweigher, and the speed setting of the front conveyor belt is generally determined by the distance between the products and the required speed. The purpose is to ensure that only one product can be on the weighing platform during the work process of the checkweigher. The second step of the checkweigher workflow: Weighing process When the product enters the weighing section, the system recognizes that the product to be tested enters the weighing area according to external signals, such as photoelectric switch signals, or internal level signals. According to the operating speed of the weighing section and the length of the conveyor, or according to the level signal, the system can determine the time when the product leaves the weighing area. From the product entering the weighing platform to leaving the weighing platform, the load cell will detect the signal, and the controller selects the signal in the signal stable area for processing, and the weight of the product can be obtained. The third step of the checkweigher workflow: the sorting process. After the controller obtains the weight signal of the product, the system will compare with the preset weight range and sort the products. The sorting type will be different according to the actual application. However, there are mainly the following types: Ⅰ Rejection of unqualified products Ⅱ Eliminate overweight and underweight separately, or transport to different places Ⅲ According to different weight ranges, they are divided into different weight categories. The fourth step of the workflow : The report feedback automatic checkweigher machine has the weight signal feedback function. Usually the average weight of the set number of products is fed back to the controller of the packaging/filling/canning machine. The controller will dynamically adjust the feeding amount to make the product The average weight is closer to the target value. In addition to the feedback function of the checkweigher, the checkweigher can also provide a wealth of report functions, such as packaging quantity per zone, total quantity per zone, qualified quantity, qualified total, average value, standard deviation, total quantity and total accumulation. If you have a need for checkweighers, you can contact us.

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