Shanghai powder packing machine factory
The relationship between the packing precision and spiral of powder packing machine
Powder packaging machine, especially small dose powder packaging machine, that is, packaging specifications in the range of 5-5000 grams, the most conventional way of feeding is spiral feeding, and there is no instant weighing measurement. Spiral blanking belongs to volumetric measurement mode, and the volume consistency 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 have an impact on the packaging accuracy and speed.
The relation between packing precision and spiral pitch of powder packing machine
Is there any relation between packing precision and spiral pitch of powder packing machine? It's safe to say: Yes! Before we have said: powder packaging machine packaging precision and speed with the screw pitch, bottom diameter, outside diameter machine spiral shape have a certain relationship, then powder packaging machine packaging precision and screw pitch? 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 standard QB/T 2501-2000 (which has no national standard) requires that the packaging specification of X (1) class weighing machine should be ≤50 grams with a allowable deviation of 6.3%, which also meets the standard of X (1). However, for customers, the packaging accuracy is directly related to the product cost, and it is clear which is better and which is inferior!
The relation between the packing precision and the spiral diameter of powder packing machine
Powder packaging machine packaging precision and spiral diameter should be said to have a very direct relationship, the previous said "powder packaging machine packaging precision and spiral pitch relationship", the premise of the relationship with the pitch is that the size of the spiral diameter has been determined, only to do the comparison. Generally speaking, powder packaging machine in the selection of metering screw according to the size of the packaging specifications, also consider the specific gravity of the material 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 size of the package, the larger the spiral diameter, so as to ensure both packaging speed and measurement accuracy.
Four, the factor that decides the packing efficiency of powder packing machine
We have said that the packaging speed and precision of powder packaging machine is mainly related to the spiral diameter, bottom diameter and pitch, also said that the spiral metering powder packaging machine should be summed up as volumetric measurement, this is clear: the factor determining the packaging efficiency of powder packaging machine is actually the volume of spiral pitch. The spiral turns how many turns will push out the corresponding volume of the material, that is, the packaging specifications. Our spiral design selection idea is: complete the measurement by turning the spiral 10 to 15 turns. Too many winding, accuracy, slow speed; Too fast, the speed has, the precision is not high. This, of course, gives the customer an idea of whether you are looking at accuracy or speed.
