A brief description of the basic knowledge of computer combination weighs
The computer combination weighs 8 scales, 10 scales, 12 scales, 14 scales, 16 scales, 24 scales or even more, each of which is a separate scale that can be weighed independently.
The material vibrates down from the upper trough through the main vibration plate, and the material reaches the line vibration plate of each head. When the first layer hopper (called storage hopper) is empty, according to the set vibration time, the material will be vibrated from the line vibration plate to the storage hopper. When the weighing hopper below the storage hopper is empty after discharging, the storage hopper is opened and the material is discharged into the weighing hopper, and the weighing hopper starts to weigh.
Assuming our target weight is 250g, we take a combination of 5 buckets (that is, take five of them to add up as a result). There are 10 in total. There are 252 ways to take 5 buckets out of 10. Since we want to take 5 buckets, 50g is used as the target weight of each bucket when setting the vibration time of the line vibrating plate, so the vibrated material will be around 50g. Due to the size and amount of the material, it is not very uniform, so How much the weight of each bucket will be, but it will be around 50g. Both heavy buckets and light buckets will appear. Even if the weight deviation of some buckets is large, it does not matter, because there are 252 ways of taking, the weight of 5 buckets adds up to The probability of 250g is very large (of course there will be an error of plus or minus 0.1-2g).
The traditional quantitative automatic packaging scale weighs while feeding, and continues to feed until the target weight data is reached. When there is a slight difference from the target weight, a weighed object must be added, that is, after coarse measurement, then precise weighing, such as the weighed individual Larger or heavier there is a larger error, which is where its weighing accuracy is affected. The computer combination scale is composed of multiple weighing units with independent feeding and discharging structures. The general computer combination scale is composed of 8 to 32 weighing units. The computer uses the principle of permutation and combination to automatically and optimally calculate the load of each weighing unit to obtain a combination of good and near quantitative values for packaging. For example, a 10-head computer combination of Zhongshan Kangweiwei Automation Machinery Technology Co., Ltd. is called as an example. During weighing, each weighing unit performs weighing, and the weight data of each weighing bucket weight is read into the computer. According to the combination mathematics principle and computer technology, 10 weighing units can realize a total of 1023 combinations. The computer selects the combination that is close to the target weight value from these 1023 combinations. In this way, the above manual repetitive work, and it is difficult to achieve the quantitative value of the work solved. Computer combination weighing is automatic weighing according to the set weight, and automatically selects the combination close to the target weight.
The computer combination scale is mainly used for weighing puffed foods such as potato chips, rice crackers, biscuits, etc .; walnuts, hazelnuts, pistachios and other large-shell nuts; rice balls, dumplings and other frozen foods; jelly, melon seeds, sweetheart plums, peanuts, nuts, chocolate, etc. Snack food; potato, carrot, apple and other crops; health tea, Chinese medicine, pills and other pharmaceutical products; washing powder, feed, plastic granules, small hardware, etc .; quantitative weighing of shellfish and aquatic products.
Target: For domestic or foreign manufacturers or packaging manufacturers who need to quantitatively weigh and package all kinds of granular, flake, strip, and irregular shapes of food, feed, plastics, pharmaceuticals, Kenwei computer combination accessories and chemical products.