Quantitative automatic packaging scale is a high-precision automatic weighing and packaging equipment used for materials such as particles, powders, flakes, liquids, etc. It is widely used in industries such as food, chemical, agriculture, and building materials. It can achieve fast and accurate quantitative weighing, and automatically complete packaging processes such as filling and sealing, greatly improving production efficiency.
The main types of quantitative automatic packaging scales
According to the different structures and applicable materials, they are mainly divided into the following categories:
1. Net weight packaging scale
working principleWeigh first and then fill, suitable for high-precision materials such as milk powder, sugar, seeds, etc.
featureHigh weighing accuracy (± 0.1%~0.2%), but relatively slow speed.
2. Gross weight packaging scale
working principleThe material and packaging bag are weighed together, suitable for particles with good flowability (such as rice, feed, fertilizer, etc.).
featureSimple structure, fast packaging speed, but slightly lower accuracy (± 0.2%~0.5%).
3. Liquid packaging scale
working principleUsing flow meters or plunger pumps to control the liquid filling volume (such as edible oil, soy sauce, chemical liquids, etc.).
featureAnti drip design, suitable for viscous or volatile liquids.
4. Combination scale (multi head scale)
working principleMultiple weighing buckets work simultaneously, and the optimal ratio is calculated through computer combination (such as irregular materials such as snacks, nuts, frozen foods, etc.).
featureHigh speed, high precision (± 0.5~1g), suitable for small packaging products.
2、 The core structure of quantitative automatic packaging scale
storage binStorage of materials to be packaged, can be equipped with vibration feeding or spiral feeding devices.
weighing system：
High precision weighing sensors (such as strain gauges and electromagnetic force sensors).
Weighing controller (PLC or dedicated instrument, can set target weight).
feeding mechanism：
Fast and slow addition of ingredientsFirst, quickly add coarse ingredients, then slowly add fine ingredients to improve accuracy.
Vibrating feeder(Applicable to particles)Spiral feeding(Suitable for powders).
Bag clamping mechanismAutomatically clamp the packaging bag and release it after filling is completed.
conveying mechanismBelt or chain conveyor, combined with sealing machine to complete subsequent packaging.
control system：
Touchscreen operation, capable of storing multiple formulas.
Support data recording and internet of things (IoT) management.