The difference between combination weigher and quantitative weigher in granule packaging machine

• source: Willa He;
• Time: 2021-06-11
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Combination weighers and quantitative weighers are two measuring devices suitable for granule packaging machines, and they are both suitable for weighing solid granular materials such as candy, nuts, frozen food, pet food, puffed food, medicinal materials, and hardware accessories. What is the difference between the two? Let's find out.

(1) Different working principles

Combination weigher is also called computer combination weigher or multi-head combination weigher. It is composed of multiple independent scales, generally ranging from 8 to 24 heads. Each scale can be weighed independently, and the combination scale uses the principle of simultaneous weighing with multiple heads to operate. After the feeder conveys the material to the top of the machine, the material will be distributed to each scale for independent weighing. At this time, the computer will read the measurement results of each independent weigher, and then the computer will arrange and combine the data, and select the combination that is closest to the target value to measure the final result.

The working principle of the quantitative scale is different. It is based on the value set before weighing, and the material is continuously added to this value. The size and weight of the material will have a greater impact on its weighing result, so the quantitative scale is suitable for relatively small volume and light weight items. Our BAOPACK granule packaging machine will recommend the best machine type and weighing method to customers according to the different materials and product properties of the customers.

（2）不同的测量精度

The weighing process of the quantitative scale is continuous feeding. The feeding and weighing are carried out at the same time. The jitter generated when the material enters the hopper will easily cause larger errors in the weighing result. The combination weigher feeds the materials into the hopper by vibrating feeding, the weighing process is relatively stable, and the measured value obtained will be more accurate. Therefore, for customers who attach great importance to the problem of material weight errors, they will prefer to purchase a combination weigher for more accurate measurement data.

(3) Different weighing speed

定量量表的测量通常是逐渐添加从粗糙称重到精确称重的材料的过程，这需要很长时间，并对包装速度产生一定的影响。组合称重器是由计算机计算得出的，以快速结合每个比例反馈的数据，并且称重速度更快。1公斤以下以下的材料以每分钟20-30袋的速度包装，而10头组合称重器的速度为每分钟50-60包，14个头组合量的速度可以每分钟达到100-120包。因此，使用组合称重器可以大大提高生产效率，这更符合当前客户对生产速度的需求。