Powder packaging machine is a general term of packaging equipment for powder products. It is suitable for automatic bag packaging machine for powder products. General machines can automatically complete the measurement, packing, sealing and cutting all work. Multi-purpose volume measurement, some models are equipped with reliable photoelectric detection system, use with photoelectric marks of packaging materials, can obtain the complete trademark design, applicable to the pharmaceutical, food, chemical, pesticide, etc., but sometimes we find powder filling quantity of the packaging machine is not accurate, how do we deal with this time?
1, powder packaging machine packaging precision and spiral relationship: powder packaging machine, especially small dose powder packaging machine, that is, the packaging specifications in the range of 5-5000 grams, the conventional feeding method is spiral feeding, and there is no instant weighing measurement method. Spiral blanking belongs to volumetric measurement mode, and the consistency of the volume of each screw pitch is the basic condition to determine the measuring accuracy of powder packaging machine. Of course, the pitch, outside diameter, bottom diameter and spiral blade shape will affect the packaging accuracy and speed.
2, powder packaging machine packaging precision and spiral diameter relationship: powder packaging machine packaging precision and spiral diameter should be said to have a very direct relationship, and the premise of the relationship with the pitch is that the size of the spiral diameter has been determined, to do the comparison. Generally speaking, powder packaging machine in the selection of metering screw according to the size of the packaging specifications, will also consider the proportion of materials to be appropriately adjusted. For example, in our small dose packaging machine, when dividing 100 grams of pepper powder, we usually choose a screw with a diameter of 38mm, but if the packaging is glucose with a large density, it is also 100 grams, so we need to use a screw with a diameter of 32mm. That is to say, the larger the package size, the larger the spiral diameter, so as to ensure both packaging speed and measurement accuracy;
3. Relation between packing precision and spiral pitch of powder packaging machine: How about packing precision and spiral pitch of powder packaging machine? Here we can illustrate by example. For example, our seasoning packet chooses 30mm od helix when packing 50 grams of cumin powder. The pitch we choose is 22mm, with the precision of ± 0.5g ratio above 80% and ± 1g ratio above 98%. However, we have seen that the same line uses 30mm OD helix with the pitch over 50mm, what will happen? The discharging speed is very fast, the measuring precision is about ±3 grams. The industry standard QB/T2501-2000 requires the X (1) class weighing machine to have a packing specification ≤50 grams with a allowable deviation of 6.3%, which is also the standard of X. However, for customers, the packaging accuracy is directly related to the product cost, and it is clear which is better or worse.
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