Intensive nano toothbrush fine hole forming mould

Abstract

The invention discloses an intensive nano toothbrush fine hole forming mould, relates to a plastic mould, and provides the intensive nano toothbrush fine hole forming mould which has the advantages of convenience for machining and capability of greatly increasing the yield. The mould comprises an upper die and a lower die, wherein a plurality of die cavities and flow channel slots communicated with each die cavity are formed between the upper die and the lower die; the bottom surface of a lower die cavity is provided with a plurality of fine holes which are intensively distributed; the lower part of the lower die is provided with an insert 1, an insert 2 and an insert 3 in sequence; the insert 1, the insert 2 and the insert 3 are mutually and closely attached; the top surface of the insert 1 on the topmost part is closely attached to the bottom surface of the lower die; the insert 1 is provided with holes 1 in one-to-one correspondence with a plurality of holes on the lower die; the insert 2 is provided with holes 2 in one-to-one correspondence with the holes on the insert 1; the insert 3 is provided with ball sockets in one-to-one correspondence with the holes on the insert 2; and a joint surface of the insert 3 and the insert 2 is a curved surface 1. According to the intensive nano toothbrush fine hole forming mould, the production efficiency of products is increased.

Description

technical field [0001] The invention relates to a plastic mold, in particular to a dense nanometer toothbrush pore forming mold. Background technique [0002] With the development of technology, the toothbrush industry has also entered the nano era. Toothbrush generally comprises brush handle, head and bristle, and brush handle and head are generally manufactured by injection molding machine, and bristle is implanted in toothbrush head by tufting machine, completes the processing process of toothbrush. The main problem is: the bristles are particularly easy to deform. The deformed bristles are skewed, curled, and fall off, which can stab the gums and oral mucosa. The fallen bristles can even enter the human body through the digestive tract and respiratory tract. [0003] Recently, some companies in the industry have developed nano toothbrushes. The basic structure of this kind of toothbrush is to make the brush head and bristles by one-time injection molding. Nylon materia...

AI Technical Summary

Problems solved by technology

The main problem is: the bristles are particularly easy to deform, and the deformed bristles are skewed, curled, and fall, which will stab the gums and oral mucosa, and the fallen bristles will even enter the human body through the digestive tract and respiratory tract

[0005] At present, electrical discharge machining is usually used to process the brush pores on the lower mold. Due to the small aperture, the electrode processing is easy to deform, and it is easy to deposit carbon during discharge. The processed effect often does not meet the requirements of the drawing, and the risk of failure is very high. Large, there are about 200-350 small, deep and long holes on a brush head, and the processing of small, deep and long holes with a depth of 10-15mm requires a template thickness of at least 20-30mm, and the above-mentioned technical means are used to process a template of this thickness With such a large number of small, deep and long holes, the yield rate is extremely low. Once a hole is out of alignment, the mold will be scrapped

Invisibly increase the risk of processing and increase the production cost

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