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Author: Smartweigh–Multihead Weighter
Multihead weigher is also called sorting machine, a kind of automatic checkweighing equipment widely used in the production line of pharmaceutical, food, chemical and other industries. The multihead weigher can detect the overweight and underweight unqualified products in the production line in real time and online. The birth of the multihead weigher greatly saves the labor cost of the enterprise and improves the production quality of the product. Nowadays, more and more enterprises are using multihead weigher.
So how does the multihead weigher work and how does the multihead weigher work? Let's take a look below! ! ! The working principle of the multihead weigher The automatic multihead weigher needs to set the speed of the feeding conveyor before working (you need to pay attention when setting the speed, in the working process of the multihead weigher, only one product can be on the weighing platform, so that the weighing The result can be accurate), and then when the product enters the conveyor, the system can identify and weigh the external signal, and in this process, the system will select the signal in the stable signal area for processing, so as to obtain the weight information of the product . Then, according to the required specifications, products with different weights are divided for screening. Multihead weigher working process The first step of the multihead weigher workflow: Weighing ready products into the multihead weigher front conveyor belt, the speed setting of the front conveyor belt is generally determined according to the spacing of the products and the required speed.
The purpose is to ensure that only one product is on the weighing platform during the working process of the multihead weigher. The second step of the multihead weigher 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. Based on the operating speed of the weighing section and the length of the conveyor, or based on the level signal, the system can determine when the product leaves the weighing zone.
From the time the product enters the weighing platform to the time it leaves the weighing platform, the load cell will detect the signal, and the controller selects the signal in the stable signal area for processing, and the weight of the product can be obtained. The third step of the multihead weigher workflow: sorting process When the controller obtains the weight signal of the product, the system will compare it with the preset weight range to sort the product. The sorting type will be different according to the actual application. Different, there are mainly the following types: Ⅰ Rejection of unqualified products Ⅱ Removal of overweight and underweight, or transport to different places Ⅲ According to different weight ranges, divided into different weight categories multihead weigher Workflow Step 4: Report Feedback automatic multihead weighers all have weight signal feedback function, usually the average weight of the set quantity of products is fed back to the controller of the packaging/filling/canning machine, and the controller will dynamically adjust the feeding amount to make the average weight of the product more accurate. close to the target value. In addition to the feedback function of multihead weigher, multihead weigher can also provide rich report functions, such as the number of packages per area, the total number of each area, the qualified number, the qualified total, the average value, the standard deviation, and the total number and total accumulation.
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