Comparison between the most popular computer combi

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Comparison between the computer combined scale and the traditional quantitative automatic packaging scale

with the rapid development of modern industry, the packaging industry also has higher requirements in the aspects of packaging accuracy, packaging speed, packaging range, etc. the traditional quantitative automatic packaging scale has been difficult to meet these requirements, and the computer combined scale was developed under this requirement. It has the following differences from the traditional quantitative automatic packaging scale:

I Differences in weighing accuracy caused by different weighing principles:

1. Different weighing principles

the quantitative automatic packaging scale is to weigh while feeding, and continue to feed before reaching the target weight data. When there is a small difference from the target weight, a weighed object must be added, that is, fine measurement after rough measurement. If the weighed object is large or heavy, there will be a large error to prevent the sample from being impacted twice, This is where the weighing accuracy is affected. The computer combined scale is composed of multiple weighing units with independent feeding and discharging structure. Generally, the computer combined scale is composed of 8 ~ 32 weighing units. The computer uses the principle of permutation and combination to automatically optimize and combine the load of each weighing unit, and obtains the best and closest combination to the quantitative value for packaging. For example, a computer combined scale with ten weighing units is used to weigh each weighing unit in the city's eight strategic emerging industries. The weight data of each weighing bucket is read into the computer, and the computer carries out the optimal combination. According to the combination mathematics, the ten weighing units can achieve a total of 1023 combinations, and the computer selects the combination closest to the target weight value from these 1023 combinations. In this way, the unit weight of the weighed object is large during the above fine measurement and weighing, and it is difficult to achieve the quantitative value. The computer combined scale takes the combination closest to the target weight as the final result

2. Different reliability of test data

as the traditional quantitative automatic packaging scale weighs while feeding, it weighs in dynamic conditions for the sensor. If the weighed object is impacted or bounced, the sensor will sense the unstable weight data and cause errors. However, the vibration feeding of the computer combined scale is for the buffer hopper, The weighing of the weighing hopper is carried out under the stable condition that the per capita consumption of plastic flexible packaging in the Middle East and Africa can achieve a Passover growth. Therefore, the weight data obtained is of high accuracy

3. Drop error

this error is a very significant error for quantitative automatic packaging scales. When the weight value in the weighing bucket reaches the set value, although the electromagnetic vibration feeder has stopped, at the moment of stopping, the existence of a section of weighed objects from the weighing bucket to the vibrator will eventually fall into the bucket, resulting in the so-called drop error. Although some quantitative automatic packaging scales reduce the drop error by shortening the feeding time, However, due to the influence of system uncertainties such as flow rate and uniformity of non hygroscopic feeding, there are still different degrees of errors. The computer combined scale is fed from the surge hopper to the weighing hopper. After the weighing hopper is completely stabilized, it sends out instructions to weigh, so there is no drop error

II. Difference in weighing speed

traditional quantitative automatic packaging scales generally go through the weighing process of rough measurement and fine measurement. In particular, the process of fine measurement needs to be added bit by bit, which takes a long time and affects the weighing speed. For example, the weighing speed of a quantitative automatic packaging scale of less than 1kg is generally 20 ~ 30 packages/min, while the computer combined scale can reach 100 ~ 120 packages/min in the computer's rapid optimization and combination operation, which is 4 ~ 6 times faster than the weighing speed of a quantitative automatic packaging scale, and is easy to cooperate with various packaging machines. It greatly improves the packaging efficiency and is more suitable for the needs of modern production management

III. difference in weighing range

under the same accuracy, the weighing range of the computer combined scale is larger than that of the quantitative automatic packaging scale. Generally, the weighing range of the quantitative automatic packaging scale under the same accuracy is controlled within 4 times, while the weighing range of the computer combined scale in the small weighing section can reach more than 10 times. From a large number of test results, it can be seen that there is a difference in the weighing range between the two. For example, within the scale range of more than ten grams to one kilogram, the computer combined scale can meet the requirements of X (1) accuracy level, especially in the small scale section. If you want to keep the accuracy level unchanged, the quantitative automatic packaging scale can only reduce the scale range and form a multi-stage scale. Only by producing multiple series products can you meet the requirements of the manufacturer. General manufacturers will hardly accept this phenomenon. This has brought limitations to its practical application, which can not meet the requirements of different packaging specifications (g) in some production fields but with similar accuracy

the above are the advantages of computer combined scales. In the past, computer combined scales were mainly produced by imported or foreign-funded enterprises, so the price problem hindered their wide application. Now, Zhongshan vepak Packaging Machinery Co., Ltd. adopts advanced computer combined components and components. Its stable performance, honest after-sales service and price closer to domestic food terminals have won the favor and praise of a large number of food manufacturers. With the rapid improvement and upgrading of technology, the computer combined scales that were originally regarded as "noble products" are no longer listed as the patents of large enterprises. More domestic enterprises pursuing high speed and high efficiency have eliminated the previous quantitative weighing and packaging production lines that cost materials and labor, such as cup type or all manual work, and armed themselves with a high-tech and more automated combined scale quantitative weighing and packaging system. The early localization of computer combined scales is not only a great blessing for Chinese food enterprises, but also the only premise for its comprehensive popularization and application in domestic quantitative packaging enterprises

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