TW201332487A - Manufacturing method of toothbrush and toothbrush - Google Patents

Abstract

The present invention provides a manufacturing method of toothbrush and a toothbrush produced by the same. The method is first to form a brush holder by injection molding, in which one end of the brush holder is the brush head, and the brush head is configured with a plurality of bristle holes penetrating the outer walls of both sides; forming a recessed positioning slot on the outer wall of one side; forming a bristle portion on the brush holder by injection molding, in which the bristle portion is configured within the positioning slot of the brush head with a joining sheet; respectively penetrating a plurality of bristles connected with the joining sheet through the bristle holes and protruding to the outer wall of another side; and, forming an encapsulating portion on the brush holder by injection molding, in which the encapsulating portion may cover on the brush holder having a portion of the inner wall covering the positioning slot and the joining sheet. Thus, the toothbrush may be manufactured without using the bristle implanter, so as to reduce the manufacturing cost and enhance the productivity, and the present invention may have the advantage for easily recycling the materia.

Description

Toothbrush manufacturing method and toothbrush

The present invention relates to a method of manufacturing a toothbrush, and more particularly to a method of manufacturing a toothbrush by multiple injection molding.

Toothbrushes are necessary tools for maintaining oral hygiene. The bristles of the toothbrush can be inserted into the teeth to clean the residual food in the teeth to keep the breath fresh and reduce the occurrence of oral diseases.

In the manufacturing method of the prior art toothbrush, a handle is first formed by plastic injection, and a plurality of brush holes are formed on a side wall surface of the brush head of the handle. Then, the bristles are drawn to make a plurality of monofilaments, and the ends of the monofilaments are processed to form a fine tip, and then the implant points at the center of the monofilament are used as fulcrums, and the ends of one monofilament are folded up to form two The bristles are juxtaposed, and the middle portions of the plurality of monofilaments are respectively planted in the respective pores of the brush head, and then respectively inserted into the pores of the brush with a copper fixing member to fix and fix the implantation points of the monofilaments in the pores of the brush.

In the above manufacturing method, in order to implant the bristles into the pores of the brush, it is necessary to use one of the prior art to grow the hair machine and the hair trimming machine, but the hair planting machine and the hair trimming machine are relatively expensive, and the manufacturing process is complicated and costly. Moreover, the production capacity cannot reach the required speed; in addition, the toothbrush made by the above manufacturing method is a copper fixing member having a fixed bristles in the handle of the plastic, which is small in size, and is small in size. It is difficult to remove from the pores of the brush, so it is quite inconvenient to recycle. In summary, the manufacturing method of the prior art toothbrush needs further improvement.

In view of the manufacturing method of the prior art toothbrush and the toothbrush manufactured thereby, the invention has the advantages of high manufacturing cost, low productivity, and inconvenient recovery, and the object of the present invention is to provide a hair trimming machine and a hair trimming machine. The toothbrush, and the brush handle and the bristles of the toothbrush are all made of a plastic toothbrush and a toothbrush structure, so as to increase productivity, reduce cost and facilitate recycling.

In order to achieve the above object, the method for manufacturing the toothbrush of the present invention comprises the steps of:

(1) Injection molding a handle: a corresponding first cavity is arranged to form the handle, so that one end of the handle is formed with a brush head, and one side of the outer wall of the brush head is concavely formed with a positioning groove. The brush head is provided with a plurality of brush pores respectively penetrating through the bottom groove surface of the positioning groove and the other side outer wall surface of the brush head;

(2) forming a bristle portion on the handle: a corresponding second cavity is formed to mold the bristle portion, the bristle portion includes a bonding sheet, and a plurality of bristles are formed on one side surface of the bonding sheet The bonding sheet is formed in the positioning groove of the brush head and fixedly coupled to each other, and the bristles respectively penetrate the bristle holes and protrude from the outer wall surface of the other side of the brush head;

(3) forming a package portion on the handle: a corresponding third cavity is formed to form the package portion, the package portion is formed on the handle, and a part of the package portion is formed on the handle Positioning the groove and covering the bonding sheet;

(4) Refinishing of the bristle portion: reprocessing is performed at one end of each bristle of the bristle portion by chemical treatment, so that the end portion of each bristle is formed into a thin tip shape.

In the method for manufacturing a toothbrush, in the step (4), each of the ends of each of the bristles is further formed with a plurality of fine hair portions, and each of the fine hair portions has a gap therebetween.

In the method of manufacturing the toothbrush, in the step (3), a plurality of tongue scrapers are formed on the outer wall surface of the partial encapsulation portion of the third mold cavity disposed at the brush head, and the respective tongue scrapers are formed. There is a gap.

In the manufacturing method of the toothbrush, the first cavity, the second cavity and the third cavity are simultaneously formed on a mold.

In the manufacturing method of the toothbrush, the first cavity, the second cavity and the third cavity are respectively formed on the three molds.

A toothbrush includes a handle, a bristle portion and a package portion; a brush head is formed at one end of the handle, and a positioning groove is formed on one side of the outer wall of the brush head, and a plurality of brush holes are arranged on the brush head The bristle hole is respectively penetrated through the bottom groove surface of the positioning groove and the other side outer wall surface of the brush head; the bristle portion includes a bonding piece, and a plurality of bristles are formed on one side surface of the bonding piece, the combination The sheet is formed in the positioning groove of the brush head and fixedly coupled to each other, and each of the bristles penetrates through the bristle holes and protrudes from the outer wall surface of the other side of the brush head; the package portion is formed on the handle, and the portion is formed on the handle The encapsulation portion is formed in the positioning groove of the handle and covers the bonding sheet.

In the toothbrush, the end of each bristles is formed with a plurality of fine hair portions, and a gap is formed between each of the thin hair portions.

In the toothbrush, a groove is formed on the handle and adjacent to the brush head, and the groove is in communication with the positioning groove; a part of the package is formed in the groove provided on the handle.

In the toothbrush, a part of the encapsulation portion is coated on both sides of the brush head and is formed with a plurality of spaced protrusions, and each of the protrusions faces a protruding direction of the bristles.

In the method of manufacturing a toothbrush, a plurality of tongue scrapers are formed on an outer wall surface of a portion of the package portion of the brush head, and a gap is formed between the tongue scrapers.

According to the application of the above technical means, since the bristles of the toothbrush manufactured by the present invention are directly formed on the handle by injection molding, the bristles and the trimming machine can be used for production, and the manufacturing cost can be reduced and the productivity can be improved. .

Furthermore, compared with the toothbrush containing the copper fixing member in the prior art, the toothbrush manufactured by the invention is entirely made of plastic material, and the toothbrush does not need to be disassembled and classified, and the material is obviously easy to be recycled, and the recycling is simple and It is environmentally friendly; the end of each bristle is further chemically treated to form a thin tip shape at the end of each bristles, so that the bristles can penetrate deeper into the user's teeth, teeth and gums, etc., thereby increasing the efficiency and effect of brushing.

The present invention is a method of manufacturing a toothbrush, as shown in FIG. 1 , which includes the steps shown in the drawings. Referring to FIG. 2 , the method for manufacturing the toothbrush of the present invention is used to manufacture the toothbrush shown in the drawing. The toothbrush includes a handle 10, a bristle portion 20 and a package portion 30. The steps of the manufacturing method of the present invention include:

(1) Injection molding a handle 10: Referring to FIG. 3, a first cavity (not shown) is formed, and the inside of the first cavity is formed with the shape of the handle 10 shown in the drawing. One end of the handle 10 is a brush head 11 . Referring to FIG. 4 , a positioning groove 110 is formed on one side of the outer wall surface of the brush head 11 , and a plurality of brush holes 111 are disposed on the brush head 11 . The two ends of the bristle holes 111 respectively penetrate the bottom groove surface of the positioning groove 110 and the other outer wall surface of the brush head 11; the liquid plastic material is poured into the first cavity by injection molding technology, and the plastic material is poured into the plastic cavity. After the material is cooled and solidified, it is formed into a plastic handle 10. The first mold construction and injection molding technology is a prior art, and will not be further described. In the preferred embodiment of the present invention, the injection molding is performed. At the same time, a groove 12 is formed on the surface of the handle 10 and adjacent to the brush head 11, and the groove 12 communicates with the positioning groove 110.

(2) forming a bristle portion 20 on the handle 10: a second cavity (not shown) is formed, and the shape of the handle 10 is formed inside the second cavity, see FIG. 4 and As shown in FIG. 5, the shape of the bristle portion 20 shown in the figure is further formed in the second cavity, and the bristle portion 20 includes a bonding piece 21 and a plurality of bristles 22, and the bonding piece 21 is formed in the positioning. In the groove 110, the plurality of bristles 22 are respectively formed in the bristle holes 111, and the bristles 22 are located at one end of the inner portion of the bristle hole 111 to connect the bonding piece 21, and the other end of the bristles 22 protrudes from the brush head. The other outer side wall surface of the 11; the handle 10 manufactured in the step (1) is placed in the second cavity, and the liquid plastic material is poured into the second cavity by the embedded injection molding technique, and the plastic material is cooled. After the curing, a plastic bristle portion 20 is formed on the handle 10. The bonding piece 21 of the bristle portion 20 is located in the positioning groove 111 of the handle 10 and is fixed and fixed by a side outer wall and a positioning groove 111. 22 penetrates the bristle holes 111 and protrudes from the other outer wall surface of the brush head 11, and the second mold is built and buried. The technology of the injection molding is an existing technology, and will not be described again.

In the preferred embodiment of the present invention, as shown in FIG. 7 and FIG. 8 , the second cavity is redesigned corresponding to the end of the bristles 22, so that after each bristles 22 are formed, The end portion is further formed with two spaced fine portions 221, and a gap 220 is formed between the two fine portions 221, as shown in FIG. 9 and FIG. 10, or the ends of each of the bristles 22A are further formed with four spaces. The fine hair portion 221A has a gap 220A between each of the thin portions 221A.

(3) forming a package portion 30 on the handle 10: a third cavity (not shown) is formed, and the shape of the handle 10 and the bristle portion 20 is formed inside the third cavity. Referring to FIG. 2 and FIG. 6 , the shape of the encapsulation portion 30 shown in the figure is further formed in the third cavity, and the encapsulation portion 30 can cover a part of the surface of the brush head 11 and the Bonding the outer wall surface of the sheet 21; placing the bristle portion 20 and the handle 10 manufactured in the step (2) into the third cavity, and pouring the liquid plastic material into the third cavity by the embedded injection molding technique. After the plastic material is cooled and solidified, a rubberized encapsulation portion 30 is formed on the handle 10, and the encapsulation portion 30 is formed in the positioning groove 110 of the handle 10, and the inner side wall surface and the other side surface of the bonding sheet 21 are formed. In the preferred embodiment of the present invention, a plurality of tongue scrapers 31 are formed on the outer wall surface of the encapsulation portion 30 at the positioning groove 110, and are fixed and fixed to each other. A spacing is formed between each of the tongue scrapers 31 to provide a user with a tongue to scrape the tongue when the user brushes the teeth. And a portion of the encapsulation portion 30 is further formed in the recess 12 provided in the handle 10, and another portion of the encapsulation portion 30 is wrapped on both sides of the brush head 11 and is formed with a plurality of spaced posts. 32. Each of the protrusions 32 is oriented toward the protruding direction of the bristles 22. When the user brushes the teeth, one end of the plurality of protrusions 32 can be in frictional contact with the gums to massage the gums of the user.

(4) Refinishing of the bristle portion: reprocessing is performed at one end of each bristle of the bristle portion by chemical treatment, so that the end portion of each bristle is formed into a thin tip shape, in a preferred embodiment of the present invention The chemical treatment means using a strong alkali solution (for example, sodium hydroxide solution...), immersing one end of the bristles 22 in a strong alkali solution (such as a sodium hydroxide solution), and heating to carry out a chemical reaction, and then performing For cleaning, please refer to FIG. 7 and FIG. 8 , so that the fine portions 221 on each of the bristles 22 are made into a thin tip shape, as shown in FIG. 9 and FIG. 10 , or each bristles 22A The thin hair portion 221A is formed in a thin pointed shape, so that the fine portions 221 and 221A of the bristles 22 and 22A can penetrate deeper into the user's teeth, between the teeth and the gums, and the efficiency and effect of brushing can be increased.

Since the toothbrushes manufactured by the present invention are all made of plastic injection molding technology, the whole is made of plastic material, and it is easy to recycle the materials, and the recycling is simple and environmentally friendly.

The first cavity, the second cavity and the third cavity may be simultaneously formed on a mold, that is, the first mold, the second mold and the third mold are provided at different positions on the mold. They may also be separately formed on different molds, for example, the first cavity is formed on a first mold, the second cavity is formed on a second mold, and a third cavity is formed on a third mold.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any person having ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the local modifications or modifications made by the present disclosure are still within the scope of the technical features of the present invention.

10. . . Brush handle

11. . . Brush head

110. . . Positioning slot

111. . . Brush pore

12. . . Groove

20. . . Brushing

twenty one. . . Bonding piece

22, 22A. . . Brushing

220, 220A. . . gap

221, 221A. . . Fine hair

30. . . Packaging department

31. . . Blade

32. . . Stud

Figure 1 is a flow chart of the present invention.

2 is a schematic perspective view of a toothbrush manufactured by the present invention.

Fig. 3 is a perspective view showing the appearance of the handle formed by the step (1).

Figure 4 is a partial side cross-sectional view showing the toothbrush of the present invention.

FIG. 5 is a schematic perspective view showing the step (2) of the present invention for injecting and forming a bristle portion on the handle.

FIG. 6 is a schematic perspective view showing the step (3) of the present invention for injecting and molding a package portion on the handle.

Figure 7 is a schematic perspective view showing the step (4) of the present invention for reworking at the end of the bristle.

Figure 8 is a bottom plan view showing the step (4) of the present invention for reworking at the end of the bristle.

Figure 9 is another perspective view of the step (4) of the present invention for reworking at the end of the bristle.

Figure 10 is another bottom view of the step (4) of the present invention for reworking at the end of the bristle.

Claims (10)

A method for manufacturing a toothbrush, the steps comprising: (1) injection molding a handle: a corresponding first cavity is configured to form the handle, such that one end of the handle is formed with a brush head, one of the brush heads a positioning groove is formed on the side outer wall, and the plurality of brush holes are disposed on the brush head, and the brush holes respectively penetrate the bottom groove surface of the positioning groove and the other side outer wall surface of the brush head; (2) Forming a bristle portion on the handle: a corresponding second cavity is formed to form the bristle portion, the bristle portion includes a bonding sheet, and a plurality of bristles are formed on one surface of the bonding sheet, and the bonding sheet is formed The forming position is fixed in the positioning groove of the brush head, and the bristles respectively penetrate the bristle holes and protrude from the outer wall surface of the other side of the brush head; (3) forming a package portion on the handle: Disposing a corresponding third cavity to form the encapsulation portion, the encapsulation portion is formed on the handle, and a part of the encapsulation portion is formed in the positioning groove of the handle and covering the bonding piece; (4) bristles Reprocessing: chemical treatment of each brush in the bristle Reprocessing at one end of the end portion of each of the bristle tip of a fine shape. The method of manufacturing a toothbrush according to claim 1, wherein in the step (4), each of the ends of each of the bristles is further formed with a plurality of fine hair portions, and each of the fine hair portions has a gap therebetween. The method of manufacturing a toothbrush according to claim 2, wherein in the step (3), a plurality of tongue scrapers are formed on the outer wall surface of the partial encapsulation portion at the brush head, and each scraping tongue A spacing is formed between the plates. The method of manufacturing a toothbrush according to any one of claims 1 to 3, wherein the first cavity, the second cavity, and the third cavity are simultaneously formed on a mold. The method of manufacturing a toothbrush according to any one of claims 1 to 3, wherein the first cavity, the second cavity, and the third cavity are respectively formed on the three molds. A toothbrush includes a handle, a bristle portion and a package portion; a brush head is formed at one end of the handle, and a positioning groove is formed on one side of the outer wall of the brush head, and a plurality of brush holes are arranged on the brush head The bristle holes respectively penetrate the bottom groove surface of the positioning groove and the other side outer wall surface of the brush head; the bristle portion includes a bonding piece, and a plurality of bristles are formed on one side surface of the bonding piece, the combination The sheet is formed in the positioning groove of the brush head and fixedly coupled to each other, and each of the bristles penetrates through the bristle holes and protrudes from the outer wall surface of the other side of the brush head; the package portion is formed on the handle, and the portion is formed on the handle The encapsulation portion is formed in the positioning groove of the handle and covers the bonding sheet. The toothbrush according to claim 6, wherein the end of each of the bristles is formed with a plurality of fine hair portions, and a gap is formed between the fine portions. The toothbrush of claim 7, wherein a groove is formed on the handle and adjacent to the brush head, the groove is in communication with the positioning groove; and a part of the package is formed on the handle Inside the groove. The toothbrush of claim 8, wherein a portion of the encapsulating portion is wrapped around the brush head and is formed with a plurality of spaced studs, each of the studs facing the protruding direction of the bristles. The method of manufacturing a toothbrush according to claim 9, wherein a plurality of tongue scrapers are formed on an outer wall surface of the partial encapsulation portion of the brush head, and a gap is formed between the tongue scrapers.