Multi-head spiral mixing device

Abstract

The invention relates to the technical field of injection molding, in particular to a multi-head spiral mixing device. The multi-head spiral mixing device comprises a mixing body; the outer side of the mixing body is provided with a spiral groove part which comprises a plurality of first spiral grooves winding the mixing body forwards and second spiral grooves winding the mixing body reversely; the mixing device has conveying capacity through the first spiral grooves, the pressure loss is small, the conveying capacity and the cutting capacity of the mixing device are improved, the second spiral grooves have a flow disturbing effect, and accordingly, raw materials can be mixed more uniformly; the first spiral grooves and the second spiral grooves are formed in the outer side of the mixing body in a staggered mode, so that the raw materials are stirred and mixed better; and annular grooves are formed in the spiral groove part so that dead angles can be eliminated, the annular grooves can provide buffer spaces to allow the raw materials to be mixed centralizedly, thus, the raw materials transit slowly in runners, the plastic passing pressure is decreased, color changing is easier, the color changing time is shortened, and the production efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a multi-head spiral mixing device. Background technique [0002] In injection molding, sometimes it is necessary to mix and knead plastic particles of two or more different colors to prepare and process products of the desired color. At present, the color mixing and kneading of plastic particles of more than two different colors usually adopts such as figure 1 shown in the mixing head to process, figure 1 The following problems were found in the pineapple head structure 101 in the actual use process: first, this structure itself has no conveying capacity, and the pressure loss is relatively large when glued, resulting in uneven color of the processed product; second, this kind of structure The structure has dead angles, it is easy to stagnate materials, it is difficult to change colors, the mixing effect is not good and the production efficiency is low. SUMMARY OF T...

AI Technical Summary

Problems solved by technology

At present, the color mixing and kneading of plastic particles of more than two different colors usually adopts such as figure 1 shown in the mixing head to process, figure 1 The following problems were found in the pineapple head structure 101 in the actual use process: first, this structure itself has no conveying capacity, and the pressure loss is relatively large when glued, resulting in uneven color of the processed product; second, this kind of structure The structure has dead angles, easy to stagnate materials, difficult to change colors, poor mixing effect and low production efficiency

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