A toothpick mold with interdental brush and its manufacturing method

Abstract

The invention discloses a die for a toothpick with a tooth seam brush. The upper surface of a lower die is provided with a lower runner and multiple toothpick lower die grooves. The second tip portions of the toothpick lower die grooves are provided with multiple bristle lower grooves. The lower surface of an upper die is provided with an upper runner and multiple toothpick upper die grooves. At least one sides of the second tip portions of the toothpick upper die grooves are provided with multiple bristle upper grooves. Cooling water ways and heating water ways are arranged in the lower die, the cooling water ways are located between the first tip portions and the second tip portions of the toothpick lower die grooves, and the heating water ways correspond to the bristle lower grooves of the toothpick lower die grooves in position. The heating water ways are additionally arranged on the basis of the cooling water ways, the bristle lower grooves of the toothpick lower die grooves are heated, small cavities composed of the bristle lower grooves and the bristle upper grooves are evenly filled with injection molding PP materials, and therefore the problem that the tooth seam brush (bristles) of the toothpick with the tooth seam brush cannot be easily subjected to injection molding is solved; and batched production of toothpicks with tooth seam brushes is achieved, and the toothpicks with tooth seam brushes can be widely applied and popularized.

Description

technical field [0001] The invention relates to a mould, in particular to a toothpick mold with gap brushes and a manufacturing method thereof. Background technique [0002] Most of the current toothpicks are made of bamboo, and basically have a pointed structure at both ends. In order to make the toothpicks look more clean and hygienic, after the toothpicks are produced, they basically go through a bleaching process, which makes the toothpicks look more hygienic. But in fact, it brings more serious hygiene problems due to the bleaching process. [0003] In order to solve the above hygienic problems, someone proposes to use plastic to make toothpicks, and in order to better solve the problem of food residue between the teeth, a toothbrush is set at one end of the toothpick, that is, a plurality of small bristles are set at one end of the toothpick. After long-term research , The diameter of the bristles must be less than 0.2mm to really work, otherwise the bristles cannot b...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned toothpick with tooth gap is only a concept, and it is actually difficult to carry out mass production, because it is difficult to achieve a processing accuracy of less than 0.2mm in the production of molds. Even if the most precise electric carving process is used, it can only be realized Processing accuracy of about 0.3mm

[0005] In addition, the more critical issue that is difficult to achieve mass production of toothed gap brushes is that it is difficult for molten plastic (such as PP material) to reach the corresponding position of the bristles on the mold during injection molding, even if the diameter of the bristles is enlarged to 0.3mm. Therefore, it is difficult to mass-produce the above-mentioned brush toothpick with interdental teeth, it is difficult to really enter people's daily life, and it is difficult to be popularized and used

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