Structural Composition
Feeding device: Responsible for uniformly delivering products to the weighing device. Common types include vibrating feeders and screw feeders, and the appropriate feeding method can be selected according to the material characteristics.
Weighing device: It is the core part, composed of multiple weighing units (scale heads), usually including four or eight scale heads. Each scale head is equipped with a high-precision sensor and a high-speed arithmetic processor to achieve accurate measurement of product weight.
Clamping device: Firmly clamps the product in the packaging bag to ensure that the product does not fall during the subsequent packaging process.
Sealing device: Tightly seals the packaging bag to ensure the hygiene and safety of the product. Common sealing methods include heat sealing and cold sealing.
Conveying device: Used to transport the packaged products to the next process, such as boxing and palletizing. There are various forms such as belt conveyors and chain plate conveyors.
Working Principle
Materials are conveyed from the storage bin to the weighing heads of the multi-head weigher via a conveyor. The vibrator ensures that the materials are evenly distributed on the weighing heads. Each weighing head is equipped with a load cell, which can detect the weight of materials in the weighing hopper in real-time. Components such as the PLC controller and touchscreen display in the control system process the weight data from each weighing head based on set parameters like precision and capacity. Through a specific algorithm, it calculates which combination of materials from the weighing heads is closest to the target weight, then controls these weighing heads to open their discharge gates, unloading the materials into the packaging bags below. Subsequent operations such as sealing are then carried out by the packaging machine.
Features
High degree of automation: Advanced PLC control system is adopted to realize a series of automatic operations such as automatic feeding, automatic weighing, automatic clamping, and automatic sealing, which greatly improves production efficiency.
Accurate measurement: High-precision sensors and high-speed arithmetic processors are used, with an error range controlled within ±0.1g, meeting the high requirements of enterprises for product quality.
High efficiency: With the design of multi-head simultaneous operation, the packaging efficiency can reach 1000-2000 bags per hour, which can meet the needs of large-scale production.
Easy operation: Adopting a human-machine interface, automatic operation can be realized only by setting relevant parameters, and operators do not need complicated training.
Application fields
Food industry: It can be used for quantitative packaging of products such as nuts, candies, puffed foods, tablets, and capsules.
Pharmaceutical industry: Suitable for quantitative packaging of granular chemicals.
Building materials industry: It can perform quantitative packaging of sand, gravel, cement, etc.
