JP3957011B2 - Brush tip grinding method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a brush tip grinding method and apparatus for making a plurality of fiber materials planted on a brush base into a tapered shape that is gradually sharpened from the root to the tip.
[0002]
[Prior art and problems to be solved by the invention]
For example, Japanese Patent Publication No. 50-40194 and Japanese Examined Patent Publication No. 7-213346 disclose methods of making a fiber material planted on a brush stand of a brush, such as a toothbrush, gradually taper toward the tip side. And the like, and a physical grinding method as disclosed in Japanese Patent Publication No. 50-24546 and Japanese Patent Laid-Open No. 3-198808 have been proposed.
[0003]
However, in the chemical treatment method, the waste liquid must be treated for the post-treatment of the solution saturated with the eluted fiber material and the neutralization and washing of the fiber material, which greatly increases the running cost. It was.
[0004]
On the other hand, the physical grinding method uses a cylindrical or disk-shaped grinder (grinding body), so if you try to grind to the base of the fiber material, the ground body will be strongly pressed against the fiber material. For this reason, the base is ground more than the tip, making it difficult to control the taper shape.
[0005]
Further, in the process of thinning the fiber material, a part closer to the root is slightly narrower than the tip of the fiber material, and eventually it is torn off from the thinned portion. For this reason, in the above grinding body, since the surface is relatively smooth, it is difficult to tear off the tip portion of the fiber material, and it is difficult to form a tapered shape with a sharp tip.
[0006]
Furthermore, a method has been proposed in which the fiber material is ground while contacting the fiber material of the brush with a rotating wire brush having a cylindrical shape and moving the brush in the longitudinal direction of the wire brush.
[0007]
However, in the above method, as shown in FIG. 14, the fiber material 103 of the brush 102 pressed against the rotating wire brush 101 escapes from the wire brush 101. For this reason, since the brush 102 is moved in the longitudinal direction of the wire brush 101 (direction perpendicular to the paper surface in the drawing) in a state in which the fiber material 103 is deformed, only the tip portion of the fiber material 103 can be scraped. .
[0008]
Further, as shown in FIG. 15, when the outer peripheral surface 101a of the wire brush 101 has a continuous wave shape along the longitudinal direction, when the fiber material 103 comes to the peak portion of the waveform, it escapes to the valley portion without resistance. As a result, the root of the fiber material 103 cannot be ground.
[0009]
In addition, as shown in FIG. 16, a method of swinging the wire brush 101 in the horizontal direction with respect to the brush 102 has been proposed.
However, in such a method, the fiber material 103 is greatly deformed with respect to the wire brush 101, and the deformed fiber material 103 once comes out of the wire brush 101 and returns. When the contact begins to occur, the fiber material 103 is deformed. For this reason, the above method cannot effectively grind the root of the fiber material 103.
[0010]
Furthermore, as shown in FIG. 17A, in the case of the brush 102 having a large flocked area, when the wire brush 101 does not swing, it is affected by the curvature of the wire brush 101. Therefore, the tip of the ground fiber material 103 is dented in a mortar shape as shown in FIG.
[0011]
Accordingly, an object of the present invention is to provide a brush tip grinding method capable of forming a plurality of fiber materials planted on a brush base into a tapered shape that is gradually pointed from the root to the tip with high accuracy and early. And providing an apparatus.
[0012]
[Means for Solving the Problems]
According to the first aspect of the present invention, a plurality of sets of grinding means in which a pair of grinding rotating bodies having different rotation directions are arranged in the longitudinal direction are arranged at predetermined intervals, and a plurality of fiber materials are implanted on the brush base. A brush tip grinding method for grinding the brush so that the fiber material is gradually sharpened as it goes to the tip side while sequentially moving in the longitudinal direction of the rotating grinding rotating body, The grinding rotary body is formed by providing a plurality of wire brushes at predetermined intervals along the longitudinal direction on the peripheral surface of the cylindrical portion. , Double A plurality of grinding means are arranged so that the amount of contact with the wire brush from the fiber material tip of the brush gradually increases. The pair of grinding rotating bodies is swung in a direction substantially perpendicular to the moving direction of the brush. The above object is achieved by providing a brush tip grinding method characterized by the above.
[0013]
According to a second aspect of the present invention, there is provided the brush tip grinding method according to the first aspect, wherein the brush is rotated in a plane on the wire brush. By providing this, the above-mentioned object is achieved.
[0015]
Claim 3 The invention described in claim 1 Or 2 In the brush tip grinding method described above, by providing a brush tip grinding method characterized in that a substantially spherical protrusion is provided at the fiber material tip of the brush before grinding. Achieved.
[0016]
Claim 4 The invention described in claims 1 and 2 Or 3 In the brush tip grinding method described above, the above object is achieved by providing a brush tip grinding method wherein the brush is a toothbrush.
[0017]
Claim 5 The invention described in claims 1 and 2 Or 3 In the brush tip grinding method described above, the above object is achieved by providing a brush tip grinding method wherein the brush is a hair brush.
[0018]
Claim 6 In the described invention, a plurality of sets of grinding means in which a pair of grinding rotating bodies having different rotation directions are arranged in the longitudinal direction are arranged at a predetermined interval, and a plurality of fiber materials are planted on a brush base. A brush tip grinding apparatus for grinding a brush so as to have a gradually tapered shape as it goes to the tip side while sequentially moving the brush in the longitudinal direction of the rotating grinding body, wherein the grinding rotation The body is formed by providing a plurality of wire brushes at predetermined intervals along the longitudinal direction on the circumferential surface of the cylindrical portion. , Double A plurality of grinding means are arranged so that the amount of contact with the wire brush from the fiber material tip of the brush gradually increases. The pair of grinding rotating bodies is swung in a direction substantially perpendicular to the moving direction of the brush. The above-mentioned object is achieved by providing a brush tip grinding apparatus characterized by the above.
[0019]
Claim 7 The described invention is claimed. 6 The above-mentioned object is provided by providing a brush tip grinding apparatus characterized by having a mechanism for rotating the brush planarly on the wire brush. Is achieved.
[0021]
Claim 8 The described invention is claimed. 6 or 7 The brush tip grinding apparatus described above is characterized by providing a brush tip grinding apparatus characterized by providing a substantially spherical protrusion at the fiber material tip of the brush before grinding. Achieved.
[0022]
Claim 9 The described invention is claimed. 6, 7 or 8 In the brush tip grinding apparatus described above, the above object is achieved by providing a brush tip grinding apparatus characterized in that the brush is a toothbrush.
[0023]
Claim 10 The described invention is claimed. 6, 7 or 8 In the brush tip grinding apparatus described above, the above object is achieved by providing a brush tip grinding apparatus characterized in that the brush is a hair brush.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a specific embodiment to which the present invention is applied will be described in detail with reference to the drawings.
[0025]
FIG. 1 is a perspective view showing a schematic configuration of a brush tip grinding apparatus, FIG. 2 is an enlarged perspective view of a grinding rotating body, FIG. 3 is an enlarged view of a grinding rotating body, and FIG. 4B is a side view, FIG. 4 is a perspective view showing the brush moving means, FIG. 5 is a cross-sectional view of the mechanical clutch mechanism in the hair tip grinding apparatus, and FIG. 6 is a partially broken view of the mechanical clutch mechanism. FIG. 7 is a plan view showing how the anti-rotation roller comes into contact with the anti-rotation cam and stops the rotating body, FIG. 8 is a side view showing the toothbrush, and FIG. 9 is a stepwise grinding of the toothbrush. FIG. 10 is an enlarged schematic view of the main part showing how the tip of the toothbrush is ground, and FIG. 11 is a diagram showing how the tip of the toothbrush provided with a substantially spherical protrusion is ground. FIG.
[0026]
First, the brush tip grinding apparatus of the present embodiment will be described.
As shown in FIGS. 1 to 4, the brush tip grinding apparatus of the present embodiment is a grinding apparatus in which a plurality of fiber materials planted on a brush base are gradually tapered from the root to the tip. It is.
[0027]
The hair tip grinding apparatus includes a pair of grinding means in which a pair of grinding rotating bodies 1, 2 having different rotational directions are arranged in the longitudinal direction, that is, a first grinding means 3, a second grinding means 4, and a third grinding means. The grinding means 5 and the brush moving means 7 for sequentially moving the toothbrush 6 as a brush in the longitudinal direction of the rotating grinding rotating bodies 1 and 2 are provided.
[0028]
As shown in FIG. 2, each of the first grinding means 3 to the third grinding means 5 is composed of a pair of grinding rotating bodies 1 and 2 having a cylindrical shape. 2 are arranged in tandem in the longitudinal direction. The pair of grinding rotators 1 and 2 are rotatably mounted on the respective brush mounting bases 8 and are rotated by the brush rotating motor 9 in different directions as indicated by arrows A and B in FIG. Has been made.
[0029]
That is, as shown in FIG. 2, the pair of grinding rotators 1 and 2 has rotation transmission gears 12 and 13 that mesh with a bevel gear 11 provided at the tip of the drive shaft 10 of the brush rotation motor 9. The rotation of the brush rotating motor 9 is transmitted to the grinding rotating bodies 1 and 2 by the rotation transmitting gears 12 and 13 to rotate in different directions. Accordingly, one grinding rotator 1 rotates in the direction indicated by the arrow A in FIG. 2, and the other grinding rotator 2 rotates in the direction indicated by the arrow B in FIG. Yes.
[0030]
As shown in FIGS. 2 and 3, the grinding rotators 1 and 2 have a cylindrical portion 49 made of, for example, aluminum or cast iron, and a wire brush having a plurality of annular shapes on the peripheral surface of the cylindrical portion 49. 50 are provided at predetermined intervals along the longitudinal direction. That is, the plurality of wire brushes 50 are intermittently provided in the cylindrical portion 49 along the longitudinal direction. For this reason, the toothbrush 6 that sequentially moves in the longitudinal direction of the grinding rotating bodies 1 and 2 intermittently repeats contact or non-contact with the wire brush 50 alternately.
[0031]
The inter-adjacent distance P between the wire brushes 50 only needs to be long enough to allow time for the bristles of the toothbrush 6 to elastically recover.
[0032]
The wire brush 50 is a wire brush made of stainless steel (SUS). The diameter of the wire used for the wire brush 50 is preferably 0.1 to 0.5 mm, for example. If it is less than 0.1 mm, the rigidity of the wire is lowered, and the wire escapes when the toothbrush 6 is pressed, so that the grinding ability is significantly reduced. Moreover, since the deformation amount of the wire increases, the rate at which the wire breaks due to repeated strain increases. If it exceeds 0.5 mm, it becomes difficult for the wire to enter the brush, and the root of the toothbrush 6 cannot be ground. In addition, the grinding surface is extremely rough, and finishing grinding must be performed for a long time.
[0033]
The grinding rotators 1 and 2 are, as indicated by an arrow C in FIG. 1, a direction substantially perpendicular to the moving direction of the brush 6 that moves in a loop (the direction indicated by the arrow D in FIG. 1). To swing. As shown in FIG. 2, the grinding rotating bodies 1 and 2 are swung by a pin 16 that engages with a long hole 15 formed in a rocking piece 14 attached to the lower surface of the brush mounting base 8. The rotation is performed by a swinging motor 19 that is eccentrically provided on a block 18 attached to the tip of the rotating shaft 17. That is, when the swing motor 19 is rotated, the pin 16 provided eccentrically with respect to the rotation shaft 17 moves up and down along the elongated hole 15 to swing the pair of grinding rotating bodies 1 and 2. Let
[0034]
In the first grinding means 3 to the third grinding means 5 configured as described above, the contact amount with the wire brush 50 from the fiber material tip of the toothbrush 6 gradually increases as shown in FIG. As shown in FIG. 1, the toothbrushes 6 are sequentially arranged at predetermined positions.
[0035]
That is, the wire brush 50 in the first grinding means 3 is shown by a solid line H in FIG. ₁ The wire brush 50 in the second grinding means 4 is indicated by the alternate long and short dash line H in FIG. ₂ The wire brush 50 in the third grinding means 5 is indicated by a two-dot chain line H in FIG. _Three The height of the wire brush 50 is increased stepwise or steplessly from the first grinding means 3 to the second grinding means 4 and the third grinding means 5, respectively. .
[0036]
And these 1st grinding means 3 thru | or the 3rd grinding means 5 are arrange | positioned as follows along the moving direction C of the said toothbrush 6, as shown in FIG. That is, the first grinding means 3 is disposed in front of the position where the toothbrush 6 in a state before grinding is supplied, and the second grinding means 4 is spaced a predetermined distance in front of the first grinding means 3. The third grinding means 5 is disposed at a position opposite to the second grinding means 4.
[0037]
In addition, a fourth grinding means 22 having a pair of cylindrical nylon brushes 20 and 21 having different rotational directions is disposed in front of the third grinding means 5. The fourth grinding means 22 is provided to obtain a smooth grinding surface because the grinding surface is roughened only by grinding with the wire brush 50. The nylon brushes 20 and 21 are made by kneading abrasive grains on the surface thereof. As the roughness of the abrasive grains, for example, those of # 500 to # 2000 are preferably used.
[0038]
When the roughness of the abrasive grains is less than # 500, the grinding surface is almost the same as that immediately after the wire brush grinding process, and when it exceeds # 2000, the nylon brush grinding time is overwhelmingly longer than the wire brush grinding time. Must be increased in size (to lengthen the nylon brush or place many nylon brushes), or the processing speed of the apparatus must be reduced (to reduce the moving speed of the brush passing over the nylon brush).
[0039]
The fourth grinding means 22 has the same configuration as the first grinding means 3 to the third grinding means 5 except that the grinding rotating bodies are nylon brushes 20 and 21, and thus is common. The description of the portion is omitted.
[0040]
As shown in FIGS. 4 and 5, the brush moving means 7 is moved by a rail 23 laid on a portion where the brush 6 moves while drawing a loop, and a chain drive (not shown) along the rail 23. It consists of a moving member 24.
[0041]
As shown in FIG. 4, the moving member 24 is rotated together with a pair of slide plates 25 and 26 that sandwich the rail 23 from above and below, a rotary body 27 provided between the slide plates 25 and 26, and the rotary body 27. A toothbrush holding portion 28 provided at the tip of the ridge, and a rack 29 and a pinion 30 for rotating the rotating body 27 are provided.
[0042]
As shown in FIG. 4, the pair of slide plates 25 and 26 has a substantially rectangular plane shape and slides along the upper and lower surfaces of the rail 23 having a substantially H-shaped cross section. The slide plates 25 and 26 are connected by a plurality of columns 31 having a cylindrical shape.
[0043]
As shown in FIG. 4, the rotating body 27 has a cylindrical shape having a rotation shaft 32 at the center, and is rotatably provided between the pair of slide plates 25 and 26.
[0044]
As shown in FIGS. 4 and 5, the toothbrush holder 28 holds the toothbrush 6 at its tip, and protrudes through the slide plate 26 provided below, and the tip of the rotary shaft 32 of the rotating body 27 protrudes. Is provided. The toothbrush holder 28 holds and holds the toothbrush 6 before polishing, and releases the toothbrush 6 after a series of grinding is completed. The portion that holds the toothbrush 6 is a flocked portion 35 that is a brush stand in which the fiber material 34 shown in FIG. 8 is flocked in order to securely grind the tip of the brush.
[0045]
As shown in FIGS. 4 and 5, the rack 29 is provided above the rail 23 along the rail 23. On the other hand, the pinion 30 is provided on the distal end side of the rotating shaft 32 of the rotating body 27 that protrudes through the slide plate 25 provided above. The pinion 30 meshes with the rack 29 and rotates. A coil spring 33 is provided at the top of the pinion 30 and at the tip of the rotating shaft 32.
[0046]
The coil spring 33 is used as a holding force when a mechanical clutch (described later) provided in the rotating body 27 is engaged. The mechanical clutch is for preventing the rotation from the pinion 30 from being transmitted to the toothbrush holder 28 in the vicinity of the toothbrush insertion / discharge part so that the toothbrush can be easily inserted and discharged.
[0047]
In the mechanical clutch, as shown in FIG. 5, the pinion 30 and the rotary shaft 32 are fastened, and a gear-like processed portion 39 is provided on the opposite side (base end side) of the rotary shaft 32 to the pinion 30 fastening. Is provided. The cam 40 has an internal gear-like processed portion 41 that meshes with the gear-shaped processed portion 39 of the rotating shaft 32. The cam 40 is fixed to a slide shaft 42 that can rotate and slide axially within the rotary shaft 32.
[0048]
As shown in FIG. 5, a spherical bearing 44 supporting a sphere 43 is fixed to the other end of the slide shaft 42 to which the cam 40 is fixed. As shown in FIG. 6, a pair of clutch coupling rollers 45 are arranged inside the rotating body 27. These clutch coupling rollers 45 mesh with grooves 46 formed in the cam 40 by the slide shaft 42 being lifted by the force of the coil spring 33.
[0049]
The rotation is transmitted from the pinion 30 to the rotating shaft 32, and is transmitted from the rotating shaft 32 to the cam 40 through the gear-like processed portion 39 and further from the cam 40 to the clutch coupling roller 45, that is, to the rotating body 27. The clutch is disengaged by pushing down the ball 43 from above. Then, the cam 40 fixed to the slide shaft 42 is pushed down, the groove 46 formed in the cam 40 and the clutch coupling roller 45 are separated, and the rotating body 27 can freely rotate with respect to the rotating shaft 32. At this time, as shown in FIG. 7, the rotation preventing roller 47 fixed to the outer periphery of the rotating body 27 comes into contact with the rotation preventing cam 48 and stops the rotation of the rotating body 27.
[0050]
According to the moving member 24 configured as described above, the pair of slide plates 25 and 26 are moved along the rail 23 in the direction indicated by the arrow E in FIG. Accordingly, the pinion 30 meshing with the rack 29 is rotated, whereby the toothbrush holder 28 is rotated together with the rotating body 27, and the toothbrush 6 held on the toothbrush holder 28 is in the direction indicated by the arrow F in FIG. Rotate in a plane. The reason why the toothbrush 6 is rotated in a plane on the wire brush 50 is to bring the fiber material 34 and the wire brush 50 into contact from any direction in the circumferential direction of the fiber material 34.
[0051]
Next, the brush tip grinding method of this embodiment will be described.
In the brush tip grinding method of the present embodiment, a pair of grinding means 3, 4, 5 in which a pair of grinding rotating bodies 1, 2 having different rotational directions are arranged in the longitudinal direction are arranged at predetermined intervals. A taper shape that is gradually pointed as the fiber material goes to the tip side while sequentially moving the brush in which a plurality of fiber materials are flocked on the brush base in the longitudinal direction of the rotating grinding rotating bodies 1 and 2 The grinding rotary bodies 1 and 2 are formed by providing a plurality of wire brushes 50 at predetermined intervals along the longitudinal direction on the circumferential surface of the cylindrical portion 49, and The plurality of grinding means 3, 4 and 5 are arranged so that the amount of contact with the wire brush 50 from the fiber material tip of the brush gradually increases.
[0052]
Hereinafter, the brush tip grinding method of the brush according to the present embodiment will be described in more detail.
First, as shown in FIG. 1, the toothbrush 6 before grinding | polishing is supplied to the apparatus of the said structure. As shown in FIG. 8, the toothbrush 6 supplied here includes a flocked portion 35, which is a brush base in which a plurality of fiber materials 34 are flocked, a gripping portion 36 that functions as a handle, and the flocked portion 35 and the flocked portion 35. It is comprised from the neck part 37 which connects the part 36. FIG.
In addition, the fiber material 34 consists of synthetic fibers or a chemical fiber, for example, and the front-end | tip shape is made into the column shape as shown to Fig.10 (a) before grinding | polishing.
[0053]
When the toothbrush 6 is supplied to the apparatus of this embodiment, the toothbrush 6 is held by the toothbrush holder 28 of the moving member 24 that has been moved along the rail 23 described above. The moving member 24 holding the toothbrush 6 is successively moved along the rail 23 in the direction of arrow C in FIG. When the moving member 24 is moved, the rotating body 27 is rotated by the pinion 30 meshing with the rack 29, and the toothbrush 6 held by the toothbrush holder 28 provided at the tip of the rotating body 27 is rotated. To do. That is, the toothbrush 6 is sequentially and continuously sent to the first grinding means 3, the second grinding means 4, the third grinding means 5, and the fourth grinding means 22 while rotating in a plane. go.
[0054]
First, the toothbrush 6 is sent to a position where the first grinding means 3 is provided, as shown in FIG. In the portion where the first grinding means 3 is provided, the solid line H in FIG. ₁ Since the wire brush 50 of the grinding rotators 1 and 2 is set at the position indicated by, the fiber material 34 is ground on the tip side. The toothbrush 6 is rotated by the grinding rotating bodies 1 and 2 that swing in a direction substantially perpendicular to the moving direction C of the toothbrush 6 indicated by an arrow D in FIG. Grinded by interaction.
[0055]
During contact with the wire brush 50, cooling water is injected to suppress deformation of the fiber material 34 and to wash away the grinding powder. The cooling water is circulated after collecting the grinding powder through a filter such as a nonwoven fabric or paper.
[0056]
First, the toothbrush 6 is ground by the rotating wire brush 50 in contact with the wire brush 50 provided in front of the grinding rotating body 1. In particular, when the fiber material 34 of the toothbrush 6 rides on the wire brush 50, the fiber material 34 is ground to a position closer to the root than its tip.
[0057]
Next, as shown in FIG. 3B, when the toothbrush 6 is moved to a position where the wire brush 50 is not provided, the fiber material 34 pressed against the wire brush 50 is elastically recovered. That is, the fiber material 34 that has been deformed by being pressed against the wire brush 50 returns to the state before deformation (straight state). Then, the toothbrush 6 that has been elastically recovered comes into contact with the wire brush 50 provided next, and the fiber material 34 is ground by the rotating wire brush 50.
[0058]
As described above, the toothbrush 6 repeats contact and non-contact with the wire brush 50 provided intermittently while sequentially moving in the longitudinal direction of the grinding rotating body 1, and the tip side of the fiber material 34 is gradually ground. Going to be.
[0059]
Here, for example, as shown in FIG. 15, when the fiber material 34 is brought into contact with the entire grinding rotating body 1 as the wire brush 50, the fiber material 34 is greatly deformed and only the tip portion thereof is ground. Moreover, the grinding amount is small for the grinding time. On the other hand, as in this embodiment, the fiber material 34 is intermittently contacted and non-contacted with the wire brush 50 to increase the number of times the fiber material 34 rides on the wire brush 50 and the wire brush. If the deformation of the fiber material 34 is recovered before being brought into contact with 50, the portion closer to the root than the tip of the fiber material 34 is ground.
[0060]
The toothbrush 6 is ground in the same manner by the next grinding rotator 2 that rotates in the reverse direction to the grinding rotator 1 provided in front.
[0061]
When the grinding by the first grinding means 3 is completed, the toothbrush 6 is ground by the second grinding means 4 disposed next, as shown in FIG. In the second grinding means 4, the toothbrush 6, as shown in FIG. ₂ It contacts with respect to the wire brush 50 set in the position shown by. That is, the fiber material 34 comes into contact with the wire brush 50 until reaching a portion slightly closer to the root than the tip of the fiber material 34 of the toothbrush 6. The second grinding means 4 is also ground in the same manner as the grinding by the first grinding means 3.
[0062]
Next, when the grinding in the second grinding means 4 is finished, the toothbrush 6 is ground in the third grinding means 5 arranged next, as shown in FIG. In the third grinding means 5, the toothbrush 6 has a two-dot chain line H in FIG. _Three It contacts with respect to the wire brush 50 set in the position shown by. That is, the fiber material 34 comes into contact with the wire brush 50 from the tip of the fiber material 34 of the toothbrush 6 to the portion near the base. The third grinding means 4 is also ground in the same manner as the grinding by the first grinding means 3.
[0063]
When the grinding by the third grinding means 5 is completed, the toothbrush 6 is ground by the fourth grinding means 22 arranged next, as shown in FIG. In the fourth grinding means 22, the toothbrush 6 is in the same position as the setting position of the wire brush 50 in the third grinding means 5, that is, a two-dot chain line H in FIG. _Three The nylon brushes 20 and 21 set at the positions indicated by Similarly, the toothbrush 6 is ground by the nylon brushes 20 and 21.
[0064]
As described above, the toothbrush 6 that has been ground through the four grinding steps is released from being held by the toothbrush holder 28 and is sent to a discharge port (not shown).
[0065]
As shown in FIG. 9, the toothbrush 6 to be ground through the above steps is ground while sequentially moving on the wire brush 50 in each of the grinding means 3 to 5 having different contact heights with the fiber material 34. Therefore, as shown in FIG. 10, the fiber material 34 is gradually ground from the tip, and finally the tip portion is blown off as shown in FIG. Taper shape. Thereafter, in the fourth grinding means 22, the fiber material 34 is ground by the nylon brushes 20, 21, whereby the rough surface generated by the grinding by the wire brushes 1, 2 becomes smooth.
[0066]
As described above, if the fiber material 34 of the toothbrush 6 is ground from the tip to the base side while changing the contact height with the wire brush 50 stepwise or steplessly, the fiber material 34 is controlled to have a tapered shape. It becomes easy and it can be made into the taper shape with the sharp tip which is desired. Moreover, according to the grinding method of this embodiment, since it is a physical grinding method, the problem of waste liquid processing at the time of grinding by chemical treatment does not occur, and the running cost can be reduced.
[0067]
Although specific embodiments to which the present invention is applied have been described above, the present invention is not limited to the above-described embodiments. , Various modifications can be made without departing from the scope of the present invention.
For example, in the above-described embodiment, the toothbrush 6 is rotated in a plane on the wire brush 50 and the grinding rotators 1 and 2 are swung in a direction substantially orthogonal to the moving direction of the toothbrush 6. The planar rotation of the toothbrush 6 Even if not , Grinding the fiber material 34 of the toothbrush 6 from the tip side to the root side You Can.
[0068]
That is, if the fiber material 34 of the toothbrush 6 is alternately and repeatedly contacted with the wire brush 50 arranged intermittently, the object of the present invention can be achieved only by that. In addition to this, if the toothbrush 6 is rotated in a plane on the wire brush 50, the wire brush 50 can be contacted and ground uniformly from any circumferential direction of the fiber material 34. Furthermore, if the grinding rotary bodies 1 and 2 are swung, the fiber material 34 can be further ground from the tip to the root. In the case of a brush having a small flocking area, it is not necessary to swing the grinding rotators 1 and 2 in a direction substantially perpendicular to the moving direction of the brush.
[0069]
In the invention, as shown in FIG. 11, a substantially spherical projection 38 may be provided at the tip of the fiber material 34. Providing such a protrusion 38 makes it easy to tear off the protrusion 34 at the tip when the tip of the fiber material 34 is tapered, and forms a tapered shape with a uniform tip at an early stage. can do. As a result, the grinding time of the toothbrush 6 can be greatly shortened.
[0070]
In addition, it is preferable that the said protrusion 38 is a substantially spherical shape with a diameter larger than the diameter of the fiber material 34, as shown to Fig.11 (a). The reason why the protrusion 38 has a substantially spherical shape with a diameter larger than the diameter of the fiber material 34 is to shorten the grinding time. If the grinding time can be shortened, the passing time on the wire brush 50 is shortened to unit time. The number of processes per hit can be increased, or the length of the wire brush 50 can be shortened to downsize the apparatus itself.
[0071]
In the above-described embodiment, the toothbrush 6 is used as the brush. However, the toothbrush 6 is not limited to the toothbrush 6 as long as the tip of the fiber material has a gradually tapered shape as it goes to the tip. It can also be used for nail brushes and paint brushes.
[0072]
In the above-described embodiment, the moving means 24 is moved by chain driving. However, it can be moved by driving means such as timing belt driving, metal belt driving, and linear motor.
[0073]
Moreover, in the above-mentioned embodiment, it was set as the structure which provided the several wire brush 50 at predetermined intervals along the longitudinal direction as the grinding rotary bodies 1 and 2 on the surrounding surface of the cylindrical part 49, for example, it shows in FIG. As shown in FIG. 13, a plurality of grinding means in which a single wire brush 50 is rotated by a motor 51 via a belt 52 may be arranged at predetermined intervals. In this case, it is desirable that the arrangement pitch of the wire brushes 50 is not a distance that the brush moves until an integer rotation.
The belt 52 is hung between a pulley 53 provided at the tip of the rotating shaft of the wire brush 50 and a pulley 54 provided at the tip of the rotating shaft of the motor 51.
[0074]
In FIG. 13, the rotation directions of the wire brushes 50 are alternated every other one, but they may not necessarily be alternately reversed. For example, the forward direction, the forward direction, the reverse direction, and the reverse direction may be used. In such a case, it is preferable to arrange the wire brushes 50 with the numbers in the forward direction and the reverse direction being substantially the same.
[0075]
【The invention's effect】
As is clear from the above description, according to the present invention, a plurality of fiber materials planted on the brush base are formed in a tapered shape gradually sharpened from the root to the tip with high accuracy and early. It is possible to provide a brush tip grinding method and apparatus that can be used.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a schematic configuration of a brush tip grinding apparatus according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view showing a grinding rotating body in the brush tip grinding apparatus of the present embodiment.
3 is an enlarged view of a part of the rotating grinding body shown in FIG. 2. FIG. 3 (a) is a front view and FIG. 3 (b) is a side view.
FIG. 4 is a perspective view showing a brush moving means in the brush tip grinding apparatus of the present embodiment.
FIG. 5 is a cross-sectional view of a mechanical clutch mechanism in the brush tip grinding apparatus of the present embodiment.
FIG. 6 is an enlarged perspective view of an essential part showing a mechanical clutch mechanism with a part broken away.
FIG. 7 is a plan view showing a state in which the rotation prevention roller comes into contact with the rotation prevention cam and stops the rotating body.
FIG. 8 is a side view showing a toothbrush to be ground in the brush tip grinding apparatus of the present embodiment.
FIG. 9 is a schematic diagram showing how the toothbrush is ground with respect to the wire brush while changing the contact amount stepwise, and also shows the positional relationship between the fiber material of the toothbrush and the wire brush.
FIG. 10 is an enlarged schematic view of the relevant part showing how the tip of the toothbrush is ground in the brush tip grinding apparatus of the present embodiment.
FIG. 11 is a main part enlarged schematic view showing a state in which the tip of a toothbrush having a substantially spherical protrusion at the tip is ground in the brush tip grinding apparatus of the present embodiment.
FIGS. 12A and 12B show grinding means for driving a single grinding rotating body by a belt, wherein FIG. 12A is a front view and FIG. 12B is a side view.
13 is a view showing an example in which a plurality of grinding means shown in FIG. 12 are arranged at a predetermined interval.
FIG. 14 is a schematic diagram showing a state in which the fiber material of the toothbrush escapes and deforms in a conventional bristle tip grinding apparatus.
FIG. 15 is a schematic view showing a state in which the fiber material of the toothbrush escapes at the crest portion of the wire brush having a wave shape in the conventional hair tip grinding apparatus.
FIG. 16 is a schematic view showing how the toothbrush fiber material escapes when the wire brush is swung horizontally with respect to the brush in the conventional hair tip grinding apparatus.
FIG. 17 is a schematic view showing a state where a brush having a large flocked area is ground without swinging the wire brush in a conventional hair tip grinding apparatus.
[Explanation of symbols]
1, 2 Rotating grinding body
3 First grinding means
4 Second grinding means
5 Third grinding means
6 Toothbrush
7 Brush moving means
20, 21 Nylon brush
22 Fourth grinding means
34 Textile material
38 Spherical projection
49 Cylindrical part
50 wire brush

Claims (10)

A plurality of sets of grinding means in which a pair of grinding rotary bodies having different rotation directions are arranged in the longitudinal direction are arranged at predetermined intervals, and a brush in which a plurality of fiber materials are flocked on a brush base is rotated. A brush tip grinding method for grinding the fiber material so as to have a gradually tapered shape as it goes to the tip side while sequentially moving in the longitudinal direction of the grinding rotating body,
The grinding rotator is formed by providing a plurality of wire brushes at predetermined intervals along the longitudinal direction on the circumferential surface of the cylindrical portion ,
Said grinding means multiple, it is arranged so that the amount of contact is gradually more between the wire brush from the fibrous material tip of the brush,
A brush tip grinding method, characterized in that the pair of grinding rotating bodies are swung in a direction substantially perpendicular to the moving direction of the brush.   The brush tip grinding method according to claim 1, wherein the brush is rotated in a plane on the wire brush. The brush tip grinding method according to claim 1 or 2 , wherein a substantially spherical projection is provided at the fiber material tip of the brush before grinding. 4. The brush tip grinding method according to claim 1, wherein the brush is a toothbrush. The brush tip grinding method according to claim 1, 2 or 3 , wherein the brush is a hair brush. A plurality of sets of grinding means in which a pair of grinding rotary bodies having different rotation directions are arranged in the longitudinal direction are arranged at predetermined intervals, and a brush in which a plurality of fiber materials are flocked on a brush base is rotated. A brush tip grinding device for grinding the fiber material so as to gradually become a tapered shape as it goes to the tip side while sequentially moving in the longitudinal direction of the grinding rotary body,
The grinding rotator is formed by providing a plurality of wire brushes at predetermined intervals along the longitudinal direction on the circumferential surface of the cylindrical portion ,
Said grinding means multiple, it is arranged so that the amount of contact is gradually more between the wire brush from the fibrous material tip of the brush,
A brush tip grinding apparatus characterized in that the pair of grinding rotating bodies are swung in a direction substantially perpendicular to the moving direction of the brush. The brush tip grinding apparatus according to claim 6 , further comprising a mechanism for rotating the brush in a plane on the wire brush. The brush tip grinding apparatus according to claim 6 or 7 , wherein a substantially spherical protrusion is provided at a fiber material tip of the brush before grinding. The brush tip grinding apparatus according to claim 6, 7 or 8 , wherein the brush is a toothbrush. The brush tip grinding apparatus according to claim 6, 7 or 8 , wherein the brush is a hair brush.

Images