JP2002199939A - Polishing disc for bristle tip, method of polishing bristle tip, and its device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polishing disc for bristle tips capable of simply and quickly rounding the bristle tips of brushes for any kinds of complicated, trimmed shapes as well as brushes with an ordinary trimmed shape, and to provide a method of polishing the bristle tips of brushes using the polishing disc, and a device for polishing the bristle tips of brushes. SOLUTION: The device for polishing bristle tips is equipped with the polishing disc for bristle tips 14 having bristle material 13 as a polishing means on the upper surface of a plate-like base, a driving means 15 drives to rotate the polishing disc for bristle tips 14, and a means 12d to hold a brush holds the ends of bristle parts 2 of a brush 1 to be polished to bring them into contact with the bristle material 13 of the rotated polishing disc for bristle tips 14. While rotating the polishing disc for bristle tips 14, the ends of bristle parts 2 of the brush 1 to be polished make contact with the bristle material 13 planted on the upper surface, and the ends of the bristles are rounded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush tip grinding disk for use in rounding a brush tip in a brush manufacturing process of a toothbrush or the like, and a brush tip polishing method using the grinding disk. And a hair tip polishing device.

[0002]

2. Description of the Related Art Various types of brushes, such as toothbrushes, have been proposed in terms of the thickness of the brush, the trimmed shape of the brush, and the shape of the tip of the brush that are implanted in the brush head. For example, taking the case of a toothbrush as an example, at present, there is a tendency to use a brush that makes it easy to remove dirt in a narrow portion such as between teeth. Cut into a chevron is widely used.

[0003] Such a toothbrush is manufactured by implanting a large number of brushes or brush bundles having the same length in a toothbrush head, and then cutting the brush tip into a predetermined chevron shape with a cutting device. However, in the state where it is cut by the cutting device, the tip of each brush becomes too sharp,
There is a problem that the gums are damaged during use.

Therefore, at present, the tip of the cut toothbrush is brought into contact with a grinder or the like and polished to round the sharp tip, thereby avoiding damage to the gums. Initially, as a polishing member used in this grinder, a cylindrical polishing member having abrasive particles adhered to the outer peripheral surface is used, and the cylindrical polishing member is rotationally driven by a motor or the like, and is applied to the peripheral surface thereof. By contacting the brush tip of the toothbrush, the brush tip was polished round.

[0005] However, in the case of a toothbrush or the like in which the trimmed shape of the brush tip is cut into a mountain shape, a short brush portion is brought into contact with the circumferential surface of the polishing member in order to simultaneously process the entire brushes having different lengths. As a result, the processing state becomes uneven such that only the long brush is excessively polished, and the mountain shape may be deformed.

[0006]

In order to solve the above problem, the present applicant has previously filed Japanese Patent Application No. 10-29547.
In this case, a cylindrical abrasive with an annular irregularity formed on the peripheral surface is adopted, and the cylindrical abrasive with the irregularities formed on the peripheral surface rotates and revolves at the same time as the length of the brush. A brush tip polishing apparatus that can uniformly polish the brush tip without brush was proposed.

[0007] This polishing apparatus was able to obtain extremely good polishing results, but when the trimming shape (profile) of the brush tip becomes more sophisticated and complicated as in recent years, the polishing is easily performed. In order to satisfy the demand, the cylindrical polishing member must be
There is no choice but to arrange more than one piece and slowly and gradually polish them while passing them over time. For this reason, a new problem has arisen in that the structure of the device becomes complicated and polishing takes time.

The present invention has been made in order to solve the above-mentioned problem, and it is possible to easily and quickly apply not only a brush having a normal trimmed shape but also a brush having any complicated trimmed shape. An object of the present invention is to provide a brush tip polishing disk capable of performing rounding of the tip, a brush tip polishing method and a tip polishing apparatus using the same.

[0009]

In order to achieve the above object, the present invention employs the following means. That is, the brush tip polishing disk for a brush according to the present invention is characterized in that a bristle material is planted on the upper surface of the plate-shaped substrate.

[0010] In a brush tip polishing method according to the present invention, a brush tip polishing disk in which the bristle material is implanted is used. The brush portion to be polished is brought into contact with the brush portion, and the brush portion is rounded.

Further, the brush tip polishing apparatus according to the present invention comprises a brush tip polishing disk on which the bristle material is implanted as a polishing means, and a driving means for rotating and driving the brush tip polishing disc. And a brush holding means for holding a brush portion tip of a brush to be polished so as to be in contact with the bristle material of the rotationally driven brush tip polishing disk.

In the brush tip polishing disk, the brush tip polishing method, and the tip polishing apparatus having the above-described configuration, the brush portion of the brush to be polished is a rotating brush tip polishing disc. Since the polishing is performed while contacting the bristle material implanted on the upper surface, the tip of the brush portion is effectively rounded. In addition, the brush portion of the brush is polished while penetrating into the elastic bristle material, so that even if the brush has a complicated shape at the tip of the brush, the length of the brush may be short or long. Both brushes can be uniformly polished by the bristle material.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a schematic plan view of a bristle tip polishing device according to an embodiment, FIG. 2 is a schematic side view thereof, FIG. 3 is a diagram showing a structure of a bristle tip polishing disc,
FIG. 4 is a diagram showing the structure of a toothbrush transfer mechanism in the bristle tip polishing device, and FIG. 5 is a diagram showing a contact state between the bristle material of the brush bristle polishing disc and the brush portion of the toothbrush. This embodiment shows an example in which the present invention is applied to polishing of a toothbrush.

In FIGS. 1 and 2, reference numeral 10 denotes a frame of the apparatus. Two sets of grinder apparatuses 11A and 11B are arranged in the frame 10, and a transfer apparatus for the toothbrush 1 is provided on the upper side thereof. 12 are arranged.

The two sets of grinder devices 11A and 11B
Have the same configuration, a brush tip polishing disk (hereinafter abbreviated as “polishing disk”) 14 having a bristle material 13 implanted on the upper surface thereof, and a motor 15 for rotating the polishing disk 14. The two polishing disks 14 are set so as to be rotationally driven in opposite directions by respective motors 15.

The polishing disk 14 is shown in FIG.
As shown in detail in (b), a bristle material 13 for polishing is implanted on the upper surface of a synthetic resin or metal disc-shaped substrate (hereinafter, referred to as a “disc”) 16 having a predetermined thickness. In the case of this example, as the bristle material 13 for polishing, nylon bristles or polished bodies (diamond abrasive grains, abrasive grains, paper,
Other hairs containing abrasive grains) are used, and a plurality of the hair materials 13 containing the nylon hairs or the abrasive body are bundled into a hair bundle, and the hair bundle is located on the upper surface of the disk 16 and is substantially planarly viewed. They are radially embedded at equal intervals so as to exhibit a slotted flocked pattern.

In this example, a shaft hole 17 is formed at the center of the disk 16, and the disk-shaped polishing disk 14 is rotated by the shaft hole 17 of the motor 15.
8 is fixed to the tip.

On the other hand, the transfer device 12 of the toothbrush 1
As shown in the figure, it is supported on the upper part of the frame 10 so as to be able to move up and down in the vertical direction.
2b and a transfer belt 12c, and is rotationally driven in the direction of the arrow by a driving means such as a motor (not shown).

As shown in FIGS. 4A and 4B, a brush holder 12d is provided on the surface of the transfer belt 12c of the transfer device 12. This brush holder 12
d is formed of a flexible material such as rubber, and has a number of dovetail grooves 12e formed in parallel on the surface thereof at predetermined intervals in a direction perpendicular to the transfer direction. By fitting the head portion 2 of the toothbrush 1 to be polished into the dovetail groove 12e, the toothbrush 1 can be held downward at a fixed position.

The transfer belt 12c and the polishing disk 14
And the brush size of the toothbrush 1 to be polished,
It depends on the bristle length, thickness, etc. of the bristle material 13 of the polishing disk 14, but this is changed by an elevating mechanism (not shown) provided at the transfer device support at the upper end of the frame 10, for example, a screw mechanism or a hydraulic cylinder. It is configured to be able to adjust as needed by raising and lowering.

The operation of the bristle tip polishing apparatus having the above structure will be described. The toothbrush 1 is inserted and held in the holder 12d of the transfer device 12 by a toothbrush supply device (not shown), and is transferred at a predetermined speed by the transfer belt 12. It is sequentially conveyed onto each of the grinder devices 11A and 11B. Then, in each of the grinder devices 11A and 11B, the respective polishing disks 14 are rotated in the opposite directions as indicated by arrows in FIG.
The tip of the brush portion of the brush 3 implanted in the head portion 2 is polished.

That is, when the motor 15 is driven, the polishing disk 14 fixed to the end of the rotating shaft 18 rotates, and the brush 3 implanted in the head portion 2 of the toothbrush 1 being conveyed rotates by this rotation. The polishing disk 14 passes while contacting the bristle material 13 implanted on the upper surface of the polishing disk 14.
At this time, as shown in FIG. 5, the brush 3 of the toothbrush 1 passes through the bristle material 13 of the rotating polishing disk 14 while elastically slidingly contacting each other. In addition, the polishing is performed over a wider range from the tip to the root, and a better polishing state is realized as compared with the conventional bristle tip polishing device, and the tip of the brush 3 is extremely smoothly rounded. Processed.

Further, the grinder devices are 11A and 11B.
Are provided, and the two grinder devices 11 are provided.
The polishing disks 14 of A and 11B are rotated in opposite directions to each other. Therefore, the brush 3 of the toothbrush 1 is polished from all directions by the bristle material 13 of the two polishing disks 14 rotating in the opposite direction while passing over the two grinder devices 11A and 11B. For this reason, at least two or more grinders must be provided at the time of rounding of a toothbrush having a complicated trimming shape, and at least four grinders must be provided. Can be realized.

As described above, in the case of the above embodiment, nylon bristles or nylon bristles with a polished body are used as the bristle material 13 for polishing, and the polishing disk 14 on which the bristle material 13 is implanted is rotated by the motor 15. Since the brush is driven, the bristle tip can be rounded flexibly in accordance with the trimmed shape (profile) of the brush tip cut into a complicated shape.

Further, the bristle material 1 is formed on the disc 16 in an arbitrary pattern.
3 can be implanted, and by cutting the bristle material 13 to the optimum length, optimum rigidity can be given to the rounding process at that time, and a toothbrush having a complicated trimmed shape can be provided. It can effectively act on each brush and round the tip of the brush.

The rounding action can be freely adjusted by changing the thickness and length of the hair of the bristle 13, the degree of mixing of the abrasive body, the rotation speed of the polishing disk 14, etc. The priority can be freely changed from the priority of polishing to the priority of polishing (polishing), and the switchability and the maintainability are excellent.

Further, since the bristle material 13 such as nylon bristles or nylon bristles with a polished body is used as the polishing material, clogging does not occur and the processing of the bristle material is easy.

In the above embodiment, the simplest structure of the bristle embedding type as shown in FIG. 2 is illustrated as the polishing disk 14, but an example of a polishing disk having another structure is shown in FIG. Shown in The polishing disk 14 shown in FIG. 6 utilizes a head portion 32 of a commercially available toothbrush as the bristle material 3 and is easily replaceable.

That is, a large number of dovetail grooves 19 are formed radially on the upper surface of the disk 16 and into which the toothbrush head 32 can be inserted and held, and in this dovetail groove 19, a toothbrush cut to a predetermined length from a commercially available toothbrush. After the head portion 32 is inserted so that the brush portion (hair material) 33 thereof faces upward, the holding band 20 made of synthetic resin or metal is removably wrapped around the peripheral surface of the disk 16, and the dovetail groove 19 is formed. The toothbrush head 32 inserted and held therein is prevented from falling off.

Toothbrush head 32 cut to a predetermined length
It is desirable to insert the toothbrush heads 32 so that the orientation of the toothbrush heads 32 is reversed every other time as shown in the figure. By arranging the directions back and forth at every other position in this manner, the apparent total length of the brush portion 33 in the disk radial direction can be lengthened as a whole by the adjacent toothbrush head portions 32, so It is possible to prevent the brush 3 (see FIG. 4) of the toothbrush 1 to be polished from sticking out of the brush portion 33 constituting the bristle material, and to prevent poor polishing or the like.

In the case of the polishing disk shown in FIG. 6, when the brush portion 33 of the toothbrush head portion 32 constituting the bristle material is worn, it can be easily replaced by using a commercially available toothbrush. In addition, by making the toothbrush head part 32 freely replaceable in this way, the optimum bristle material can be easily and quickly implanted according to the type of the toothbrush to be polished and the polishing conditions. Performance can be improved, and the cost of the polishing disc can be reduced.
The tip grinding device can be provided at low cost.

In the above-described embodiment, the bristle material 13 is radially implanted in the radial direction of the disk 16, but the bristle material 13 is not limited to this example. Any flocked pattern can be adopted depending on the brush to be used.

Further, in the above embodiment, the case where the present invention is applied to the brush of the toothbrush is taken as an example. However, the present invention is not limited to the toothbrush.
The same applies to all other brush products such as hair brushes, industrial brushes and the like.

The material, length and thickness of the bristle material 13 for polishing are optimally selected according to the type of toothbrush to be polished and the degree of rounding. Depending on the type of brush, not only synthetic resin bristles such as nylon bristles or nylon bristles with polished bodies, but also metal wires, for example, can be used.

[0035]

As described above, according to the present invention,
Not only brushes with normal trimmed shapes, but also brushes with any complicated trimmed shapes,
The tip of the hair can be easily and quickly rounded.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a bristle tip polishing apparatus according to an embodiment.

FIG. 2 is a schematic side view of the bristle polisher of FIG. 1;

FIGS. 3A and 3B show a structure of a brush tip polishing disk for a brush, wherein FIG. 3A is a schematic plan view, and FIG.
FIG. 3 is a schematic sectional view taken along line I.

FIG. 4 shows a structure of a toothbrush transfer device.
2A is a schematic rear view, and FIG. 2B is a schematic sectional view taken along line II-II in FIG.

FIG. 5 is a diagram showing a contact state between a bristle material of a brush tip polishing disk and a brush portion of a toothbrush.

FIG. 6 shows another example of cultivation of a brush tip polishing disk for a brush, wherein (a) is a schematic plan view, and (b) is a III in (a).
FIG. 4 is a schematic sectional view taken along line III-III, and FIG. 4C is an enlarged sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Toothbrush to be polished 2 Toothbrush head part 3 Brush part 10 Frame 11A, 11B Grinder device 12 Transfer device 12d Brush holder (brush holding means) 13 Bristle material 14 Brush tip polishing disk 15 Motor 16 Disc (plate base) 17 Shaft Hole 18 Motor Shaft 19 Dovetail 20 Pressing Band 32 Toothbrush Head 33 Brush (Brush)

Claims (6)

[Claims] 1. A brush tip polishing disk for a brush, wherein a bristle material is planted on an upper surface of a plate-shaped substrate. 2. The brush tip polishing disk for a brush according to claim 1, wherein the bristle material is nylon bristles or nylon bristles containing a polished body. 3. A brush to be polished with a bristle planted on an upper surface thereof while rotating the brush tip polishing disk for a brush using the brush tip polishing disk according to claim 1 or 2. A brush tip, wherein the tip of the brush is brought into contact and the tip of the brush is rounded. 4. The method according to claim 3, wherein the brush to be polished is a toothbrush. 5. A brush tip polishing disk according to claim 1 or 2 provided as a polishing means, a driving means for rotating and driving the brush tip polishing disk, and a brush portion tip of a brush to be polished is provided. A brush tip polishing device, comprising: a brush holding means for holding the brush tip of the rotating brush tip polishing disc in contact with the bristle material. 6. The apparatus according to claim 5, wherein the brush to be polished is a toothbrush.