Microweighing subpackaging machine and weighing subpackaging method thereof

Abstract

The invention provides a microweighing subpackaging machine and a weighing subpackaging method thereof. The microweighing subpackaging machine comprises a powder raw material bin, a screw feeder, a supplementing dust collecting hopper, a motor, a weighing hopper, a micro-disk feeder, a stepping motor, a discharging chute, a subpackaging receiving hopper, a weighing sensor and a control system. According to the microweighing subpackaging machine and the weighing subpackaging method thereof, the weighing hopper is supplemented through the screw feeder, and the weighing hopper is set with upper and lower limits; when supplementing reaches the upper limit, supplementing is stopped, and after the weight is stable, the control system records the current weight and starts to control the steppingmotor to start to conduct subpackaging when the subpackaging weight reaches the weight set by a program, subpackaging is stopped, and the actual subpackaging amount is equal to the difference betweenthe weight before subpackaging and the weight after stopping; and influences of sticking of materials of the subpackaging machine are avoided, and thus the characteristic of high precision is achieved. According to the microweighing subpackaging machine and the weighing subpackaging method thereof, sensor signals can be transmitted into the control system more accurately, and thus the precision isimproved.

Description

technical field [0001] The invention relates to the field of metering and dispensing, in particular to a high-precision micro weighing and dispensing machine and a weighing and dispensing method thereof. Background technique [0002] The filling machine is divided into mechanical equipment and packaging mechanical equipment. It is suitable for packaging of some powders and pharmaceuticals. It is a fully automated mechanical equipment. When packaging powder in the pharmaceutical industry, the final product needs to be packaged according to the specified weight. For small doses of powders, single-screw or twin-screws are generally used for packaging, but for small doses of powders with strong adsorption and ultrafine powders, there is a lack of related weighing equipment. When single-screw or multi-screw volumetric method is used for packaging, due to the adsorption of ultrafine powder, the error of volumetric method is large, which cannot meet the filling requirements; manua...

AI Technical Summary

Problems solved by technology

For small doses of powders, single-screw or twin-screws are generally used for packaging, but for small doses of powders with strong adsorption and ultra-fine powders, there is a lack of related weighing equipment

When single-screw or multi-screw volumetric method is used for packaging, due to the adsorption of ultrafine powder, the error of volumetric method is large, which cannot meet the filling requirements; manual use of weighing scales for manual packaging is time-consuming and laborious, and some drugs Toxic and inoperable by humans

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