Combination scale is composed of multiple units
??????Combination scales are also called scales, combination scales, multi-head scales, electronic scales, electronic multi-head scales, etc.
??????The combination scale is composed of a plurality of weighing units with a feeding and discharging structure. The arrangement and combination principle is used to automatically and optimally calculate the load of the weighing unit to obtain a weight combination that is close to the target weight value for packaging. The combination scale is placed on the working platform for weighing and packaging puffed food, snack food, and various food particles. Used in conjunction with vertical packaging machines, pellet packaging machines, conveyors, pillow packaging machines, multi-function packaging machines, it is the core equipment of an automated packaging system.
??????The principle of combination scale is to use combination weighing principle. The combination scale has 8 scales, 10 scales, 12 scales, 14 scales, 16 scales, 24 scales or even more, each of which is a separate scale and can be weighed independently. According to the scale manufacturer, the material vibrates from the upper trough through the main vibration plate, and the material reaches the line vibration plate of each head. When the layer hopper is called the storage hopper is empty, according to the set vibration time, the material will be vibrated from the line vibration plate to the storage hopper. When the weighing hopper below the storage hopper is empty after discharging, the storage hopper is opened and the material is discharged into the weighing hopper, and the weighing hopper starts to weigh.
??????Assuming that the target weight is 250g, we take a combination of 5 buckets, which is to take five of them to add up as a result. There are 10 in total. There are 252 ways to take 5 buckets out of 10. Since we want to take 5 buckets, 50g is used as the target weight of each bucket when setting the vibration time of the line vibrating plate, so the vibrated material will be around 50g. Due to the size and amount of the material, it is not very uniform, so How much the weight of each bucket will be, but it will be around 50g. Both heavy buckets and light buckets will appear. Even if the weight deviation of some buckets is large, it does not matter, because there are 252 ways of taking, the weight of 5 buckets adds up to The probability of 250g is great.
??????The combination scale control system developed with PLC has higher reliability, better anti-interference, lower maintenance cost than traditional single-chip computer systems, and can expand functions according to user needs. PLC refers to the programmable logic controller of digital operation electronic system, used to control the production process of machinery. It is also the abbreviation of the name of public limited company, power line car, etc. Programmable logic controller, an electronic system for digital computing operations, is designed for applications in industrial environments. It uses a type of programmable memory for its internal storage of programs, performing logical operations, sequential control, timing, counting and arithmetic operations and other user-oriented instructions, and controls various types of machinery through digital or analog input / output Or the production process is the main part of industrial control.