Preparation method of brush head assembly

Abstract

The invention discloses a preparation method of a brush head assembly, which comprises the following steps of: inserting a plurality of bristle clusters into corresponding jig rings on a jig to generate near ends and free ends of the bristle clusters; applying heat to the proximal end of each bristle tuft, effecting a hot melt to produce a proximal head; a jig for producing the near-end head through hot melting is put into a mold, so that the free end of the bristle cluster is positioned in the mold, and it is guaranteed that the whole jig is stably fixed to the mold; the brush handle is formed through injection molding of a cavity channel used for injection molding of the brush handle, the brush handle is provided with an insertion part, and the insertion part is formed above the near-end head part or wraps the near-end head part; the position of the mold is adjusted, so that the hole channel for injection molding of the flexible glue is combined with the jig, injection molding of the flexible glue is achieved to form a flexible glue body, the flexible glue body wraps the insertion part and the near-end head part of the brush handle, and therefore preparation of the brush head assembly is completed; and the prepared brush head assembly is taken out of the mold and the jig.

Description

technical field [0001] The invention belongs to the field of toothbrush production and manufacturing, and in particular relates to a preparation method of a brush head assembly. Background technique [0002] From the initial metal bristle planting technology to now more and more companies adopt metal-free bristle planting technology, with the development of brush head manufacturing process, the brush heads of both manual toothbrush and electric toothbrush include cleaning teeth, tongue and cheeks. bristles. In some toothbrushes, the bristles are organized into tufts contained within a retaining ring. The retaining ring is used to secure the bristle tufts within the brush head and generally has a hollow circular shape with an inner and outer circumference. During manufacture, the bristle tufts are inserted into the hollow interior of the retaining ring, and heat is then used to fuse the bristles together to form a head that cannot be pulled out through the retaining ring. ...

AI Technical Summary

Problems solved by technology

[0004] Although the above has solved the defect mentioned in the first paragraph, its production process is relatively complicated and cumbersome, because in the prior art, the brush head and the brush neck must be manufactured separately, and a special tool for making the brush neck is required. machine and a machine specially used to manufacture brush heads. In the prior art, in the process of manufacturing the brush head assembly, the brush neck must be manufactured on one machine before the brush head can be manufactured on another machine, because in the Before the manufacture of the brush head begins, it is necessary to put the finished brush neck into the mold for making the brush head in advance, so that the brush head and the brush head assembly can be manufactured, which makes the process more cumbersome

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