Scale

Abstract

The invention discloses a scale in the field of weighing apparatus, mainly comprising a weighing hopper (1); a horizontal plane of the upper end of the weighing hopper (1) is provided with suspension sensors (2), or a horizontal plane of the lower end of the weighing hopper (1) is provided with a supporting sensors (4), all sensors are fixedly arranged on a rack; all suspension sensors (2) or all supporting sensors (4) are connected with a weighing display control measuring appliance (8) to control operation of the scale; the scale is characterized in that the suspension sensors (2) and supporting sensors (4) are simultaneously arranged on a weighing hopper (1), the installation positions of all sensors are not necessarily in the same horizontal plane; in addition, the scale has the advantages of little drifting, stable operation, accurate measurement, high work efficiency, reduced maintenance intensity, long service life, safety and reliability, good adaptability and wide application range.

Description

(1) Technical field [0001] The invention relates to the technical field of weighing instruments, in particular to an automatic or semi-automatic weighing machine for weighing various items in different meanings. (2) Technical background [0002] The original scale was a fulcrum scale, or a steelyard scale. After a high degree of mechanization, there was a surface scale, that is, a scale with multiple fulcrums on a plane. It is the current platform scale. Although the accuracy has been greatly improved, it is not Still not meeting the needs of social production, the weight and quality of quantitative packaging products on the market are generally questioned by the whole society. Quantitative packaging scales should be the most prominent one. In fact, quantitative packaging scales were produced in the 1970s. The initial weighing accuracy It is also very rough, only about 10%. Quantitative weighing makes the standard of weighing accuracy increase rapidly. In the 1980s, people’s...

AI Technical Summary

Problems solved by technology

[0002] The original scale was a fulcrum scale, or a steelyard scale. After a high degree of mechanization, there was a surface scale, that is, a scale with multiple fulcrums on a plane. It is the current platform scale. Although the accuracy has been greatly improved, it is not Still not meeting the needs of social production, the weight and quality of quantitative packaging products on the market are generally questioned by the whole society. Quantitative packaging scales should be the most prominent one. In fact, quantitative packaging scales were produced in the 1970s. The initial weighing accuracy It is also very rough, only about 10%. Quantitative weighing makes the standard of weighing accuracy increase rapidly. In the 1980s, people’s accuracy requirements were increased to 0.2%. Until today, this accuracy requirement is still the goal that people require. The reason is the scale itself. It is the scale that restricts the improvement of packaging scale machinery. First of all, decades of practice have shown us that three-level feeding is an important method to improve the accuracy of packaging scales (dividing each packaging quantity into three Level: The first level of material supply accounts for 60% of the unit packaging weight, the second level of material supply accounts for 35%, and the third level of material supply accounts for 5%), which is also a manifestation of improving weighing efficiency. It is the impact of this efficiency, The foundation of the original single-layer plane, support sensor type or single-layer plane suspension sensor type will be disintegrated. The main performance is: 1. Due to the widespread use of single-layer plane support sensor type or single-layer plane suspension sensor assembly method When encountering the impact of gravity or vibration, there is no mutual compensation between the sensors, which makes the signals of various scales unstable, which is also a drift phenomenon that people often say, with poor control quality and adaptability, and low work efficiency; It is said that the additive quantitative packaging scale and batching scale lack the accurate theoretical and technical guidance of the three-level feeding when applying the three-level feeding. In addition, the support of the single-layer sensor is not easy to stabilize the working signal of the packaging scale, resulting in the three-level feeding in name only , or simply give up the three-level feeding; 3. The unloading type is also called the subtractive method. The batching scale and the quantitative packaging scale are mostly unloaded by belts. , increasing unnecessary cost waste

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