Method for producing brush holder of tooth brush

Abstract

The invention relates to a method for producing a brush holder of a tooth brush. The method comprises two mixing processes and two injection molding processes, wherein the mixing processes comprise mixing of primary injection molding materials and mixing of secondary injection molding materials corresponding to the injection molding processes; the two injection molding processes comprise primary injection molding and secondary injection molding; a semi-finished product is produced by a horizontal injection molding machine and a primary injection mould in the primary injection molding process; and the production is performed by a vertical injection molding machine and a secondary injection mould in the secondary injection molding process.

Description

technical field [0001] The present invention relates to a method of producing a toothbrush handle. Background technique [0002] At present, the production methods of toothbrush handles mainly include methods such as plastic injection molding, plastic compression molding and plastic die-casting, among which injection molding is more commonly used. The so-called injection molding is to heat and melt the raw material in the barrel of the injection molding machine. Under the action of injection pressure, the molten raw material is ejected from the nozzle at the front end of the barrel, flows through the gating system and is injected into the closed cavity of the mold, and then cooled. Finalize the shape, and finally, open the cavity, and take out the product from the mold. However, the toothbrush handle molding method in the prior art mostly adopts one-time injection molding, and correspondingly, the raw materials required for injection molding materials are all used one-time ...

AI Technical Summary

Problems solved by technology

However, the toothbrush handle molding method in the prior art mostly adopts one-time injection molding, and correspondingly, the raw materials required for injection molding materials are all used one-time injection molding materials

However, due to the limitation of the maximum flow of the melt, this process cannot produce thicker brush handles, let alone brush handles with more complicated shapes. It can only produce brush handles with simple shapes and single colors, which cannot satisfy People increasingly pursue shape, color and other needs in daily life

[0003] In addition, if the mold components are filled at one time during the injection molding process, it is easy to produce glue overflow, which not only causes a large number of batches, but also causes serious shrinkage, and also causes disadvantages such as greater injection pressure on the cavity. Therefore, in the end, The surface of the product is not clean, there are visible impurities, cracks, burnt and bubbles with a diameter greater than 1mm, and the product has a wide parting line, wrong mold, burr, thimble top concave, groove, shrinkage, flash, deformation, etc. Phenomenon often occurs

[0004] In addition, during the use of the toothbrush handle, the force on each part is not uniform, and the material properties of all parts of the brush handle do not need to reach sufficient strength. On the contrary, the part that is in contact with the human body is more important. It is hoped that there will be better contact and touch requirements. Therefore, the raw materials for one-time injection molding and one-time injection molding materials cannot meet various performance requirements.

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