JP5917191B2 - Brush tip polishing method and apparatus for interdental brush - Google Patents

Description

  The present invention relates to a brush tip polishing method and apparatus for an interdental brush.

  Conventionally, an interdental brush is known. As shown in FIG. 5 (a), the interdental brush 11 includes a wire rod portion 13 formed by twisting a metal wire 12, and a direction orthogonal to the wire rod portion 13 and in the longitudinal direction thereof. The brush 14 is composed of a plurality of filaments that protrude radially in the radial direction at intervals, and a plastic base 15 that is integrally provided at the base of the wire rod portion 13. And the brush 14 fixed to the wire rod part 13 moves together by picking the base 15 of the interdental brush 11, and putting the wire rod part 13 in and out of the clearance gap between teeth, and by a normal toothbrush It is possible to clean the side surface portion and root portion of the tooth, which is difficult to clean with dental brushing.

  In such an interdental brush 11, a plurality of filaments made of synthetic fiber bundles are sandwiched between two folded metal wires 12, the metal wires 12 are twisted, and a plurality of filaments are twisted at a plurality of locations. The filament 14 is cut to form the brush 14, and finally the base 15 is formed by insert molding or the like (for example, see Patent Document 1).

JP 7-227315 A

  By the way, when the brush tip of the interdental brush described above is cut with a blade, the tip of each filament forming the brush is cut into an acute angle by its flexibility as shown in FIG. The shape of the cut surface is widened outwards. For this reason, when using the interdental brush, when the brush is inserted between the teeth, there is a case where the user feels uncomfortable feeling that the hair ends are hard.

  The present invention has been made in view of such problems, and the tip of each filament forming the brush is rounded into a substantially hemispherical shape to suppress the occurrence of discomfort during insertion between the teeth of the brush. A brush tip polishing method and apparatus for an interdental brush that can be used.

The brush tip polishing method for an interdental brush according to the present invention includes a base, a wire rod portion protruding from the tip of the base onto the central axis of the base, and the wire rod provided at the tip of the wire rod portion. Holds the interdental brush consisting of a straight brush portion in which a plurality of filaments radially projecting in a radial direction perpendicular to the portion are aligned at almost the same length so that the brush tip is substantially in contact with the polishing sheet After that, the interdental brush is rotated with a rotation radius set while maintaining the posture with respect to the polishing sheet, and the interdental brush is rotated around the longitudinal axis by a set angle to polish the brush tip over the entire circumference. It is characterized by this.

  According to the present invention, the interdental brush is held in a state in which the brush tip is substantially in contact with the polishing sheet. Next, the interdental brush is rotated at a rotation radius set while maintaining the posture with respect to the polishing sheet. In parallel with this rotation, the interdental brush is rotated around its longitudinal axis by a set angle. As a result, the tips of the filaments forming the brush rotate on the rotation radius while substantially contacting the polishing sheet while changing the contact position with respect to the polishing sheet by a set angle in the circumferential direction. It is rounded and polished.

  As a result, when the interdental brush is inserted between the teeth, the tips of the filaments forming the brush come into smooth contact with the gums, and the occurrence of a sense of incongruity can be suppressed.

In the present invention, it is preferable to sandwich the substantially contact with a pair of abrasive sheet having parallel polished surface brush tip. As a result, the straight brush tip of the interdental brush can be simultaneously polished at two locations 180 degrees away from the polishing sheet, and the brush tip can be polished in a short time.

In the present invention, a base, a wire rod portion projecting from the distal end of the base onto the central axis of the base, and provided radially at the distal end of the wire rod portion in a radial direction perpendicular to the wire rod portion A plurality of filaments protruding in the direction of the brush surface of the interdental brush comprising a brush portion formed in a tapered shape whose length gradually increases toward the base side is a polishing surface of a single polishing sheet It is preferable to make it substantially contact. Thereby, the taper-shaped brush front-end | tip in an interdental brush can be grind | polished.

A brush tip polishing apparatus for an interdental brush according to the present invention includes a base, a wire rod portion protruding from the tip of the base onto the central axis of the base, and the wire rod provided at the tip of the wire rod portion. A polishing apparatus for polishing a brush tip of an interdental brush composed of a straight brush portion in which a plurality of filaments radially projecting in a radial direction perpendicular to a portion are arranged to have substantially the same length. The holder that holds the interdental brush on the processing table is rotatably supported via a vertical axis corresponding to a straight brush in the interdental brush, while the horizontal axis extending in the left-right direction is eccentrically positioned via an eccentric plate. The eccentric shaft connected to the work table is rotatably supported on the work table, and the eccentric shaft is provided with a tooth-missing gear, the vertical shaft is provided with a gear meshing with the tooth-missing gear, A pair of polishing sheets that are substantially in contact with the tip of the brush-like brush and sandwiched between the left and right directions, and the pair of interdental brushes held on the processing table while maintaining a vertical posture with respect to the polishing sheet by rotating the horizontal axis The center axis of the horizontal axis is rotated around the axis of the horizontal axis with the eccentric distance between the axis of the eccentric axis and the axis of the horizontal axis as the rotation radius. The straight brush tip is polished over the entire circumference by rotating a set angle with respect to one rotation of the horizontal axis around the axis.

  According to the present invention, when the interdental brush is inserted and held in the holder of the work table and the horizontal shaft is rotated, the flat plate connected to the horizontal shaft is rotated, and the flat plate is eccentric from the axis of the horizontal shaft. The eccentric shafts connected with a distance rotate around the axis of the horizontal axis using the eccentric distance between the axis of the horizontal axis and the axis of the flat shaft as a rotation radius. At this time, since the eccentric shaft is rotatably supported with respect to the work table, the rotation of the eccentric shaft around the axis of the horizontal axis causes the work table to follow and rotate. As a result, the straight brush of the interdental brush held by the holder of the processing table maintains the vertical posture with respect to the polishing sheet with the two tips 180 degrees apart from each other being substantially in contact with the pair of polishing sheets. However, it rotates about the axis of the horizontal axis with the eccentric distance between the axis of the eccentric shaft and the axis of the horizontal axis as the rotation radius. Thereby, the front-end | tip of each filament which forms a straight brush can be grind | polished roundly in a substantially hemispherical shape.

  Further, the rotation of the eccentric shaft causes the toothless gear provided on the eccentric shaft to rotate about the axis of the horizontal axis and the gear meshing with the toothless gear to rotate about the axis of the vertical axis. At this time, since the teeth are provided only in the setting range of the missing gear, the gear rotates only when the teeth provided in the setting range of the missing gear mesh. That is, the gear rotates about the axis of the vertical axis by a set angle corresponding to the set range in which the teeth are provided for one rotation of the toothless gear. Therefore, rotation of the gear set angle rotates the interdental brush held by the vertical axis and holder around the axis of the vertical axis to set the contact position of the straight brush tip of the interdental brush to the polishing sheet. The set angle will be changed in the circumferential direction. Therefore, the tip of each filament forming the straight brush can be rounded substantially hemispherically around the entire circumference while changing the set angle in the circumferential direction.

  As a result, when the interdental brush is inserted between the teeth, the tips of the filaments forming the brush come into smooth contact with the gums, and the occurrence of a sense of incongruity can be suppressed.

A brush tip polishing apparatus for an interdental brush according to the present invention includes a base, a wire rod portion protruding from the tip of the base onto the central axis of the base, and the wire rod provided at the tip of the wire rod portion. A plurality of filaments that protrude radially in a direction perpendicular to the portion of the interdental brush including a brush portion formed in a tapered shape whose length gradually increases toward the base side A polishing apparatus for polishing the tip of the brush, and a holder for holding an interdental brush on a work table is rotatable through an inclined shaft having an inclination angle corresponding to the taper angle of the tapered brush in the interdental brush. On the other hand, an eccentric shaft connected to an eccentric position via an eccentric plate on a horizontal shaft extending in the left-right direction is rotatably supported on the work table, and a decentered bevel gear is provided on the eccentric shaft, and an inclined shaft is provided. The bevel gear or mesh with teeth bevel gear provided, further, be provided with a polishing sheet substantially in contact with the tapered brush tip in interdental brush, to rotate the horizontal axis, the abrasive sheet interdental brush held in the worktable It is rotated about the axis of the horizontal axis eccentricity of the axis of the axis and the horizontal axis of the eccentric shaft while maintaining the inclined posture as the rotation radius for, between the teeth through the toothless bevel gears及Bikasa gear The brush is rotated around the axis of the tilt axis by a set angle with respect to one rotation of the horizontal axis, and the tapered brush tip is polished over the entire circumference.

  According to the present invention, when the interdental brush is inserted and held in the holder of the work table and the horizontal shaft is rotated, the flat plate connected to the horizontal shaft is rotated, and the flat plate is eccentric from the axis of the horizontal shaft. The eccentric shafts connected with a distance rotate around the axis of the horizontal axis using the eccentric distance between the axis of the horizontal axis and the axis of the flat shaft as a rotation radius. At this time, since the eccentric shaft is rotatably supported with respect to the work table, the rotation of the eccentric shaft around the axis of the horizontal axis causes the work table to follow and rotate. As a result, the taper-shaped brush of the interdental brush held by the holder of the processing table maintains the inclined posture with respect to the polishing sheet in a state where the tip thereof is substantially in contact with the polishing sheet, and the axis between the eccentric shaft and the horizontal shaft. It rotates around the axis of the horizontal axis with the eccentric distance from the axis as the rotation radius. Thereby, the front-end | tip of each filament which forms a taper-shaped brush can be grind | polished roundly to a substantially hemispherical shape.

  Further, the rotation of the eccentric shaft rotates the bevel gear bevel gear provided on the eccentric shaft around the axis of the horizontal shaft and the bevel gear meshing with the non-tooth bevel gear around the axis of the tilt shaft. At this time, since the teeth of the bevel gear are provided only in the set range, the bevel gear rotates only when the teeth provided in the set range of the bevel gear are engaged. That is, the bevel gear rotates around the axis of the tilt shaft by a set angle corresponding to a set range in which the teeth are provided for one rotation of the bevel gear. Therefore, the rotation of the set angle of the bevel gear is performed by rotating the interdental brush held by the inclined shaft and the holder around the axis of the inclined shaft by a set angle, and the contact position of the tapered brush tip of the interdental brush with respect to the polishing sheet. Is changed in the circumferential direction by a set angle. Therefore, the tips of the filaments forming the tapered brush can be rounded substantially hemispherically over the entire circumference while changing the set angle in the circumferential direction by a set angle.

  As a result, when the interdental brush is inserted between the teeth, the tips of the filaments forming the brush come into smooth contact with the gums, and the occurrence of a sense of incongruity can be suppressed.

  In the present invention, it is preferable to provide a support frame that movably supports the processing table in the vertical direction and the front-rear direction. As a result, when the worktable rotates following the rotation of the eccentric shaft, the worktable rotation can be disassembled into a vertical movement and a front-back movement and supported by the support frame. It can be supported stably.

  According to the present invention, it is possible to polish the tip of each filament forming the brush into a substantially hemispherical shape and suppress the occurrence of uncomfortable feeling during insertion between the brush teeth.

It is a perspective view which shows one Embodiment of the brush tip grinding | polishing apparatus of the interdental brush of this invention. It is explanatory drawing which shows typically the grinding | polishing point of the brush tip by the grinding | polishing apparatus of FIG. It is explanatory drawing which expands and shows the interdental brush grind | polished by the grinding | polishing apparatus of this invention, and its brush front-end | tip X part. It is a front view which abbreviate | omits and partially shows other embodiment of the brush tip grinding | polishing apparatus of the interdental brush of this invention. It is explanatory drawing which expands and shows the conventional interdental brush and its brush front-end | tip A part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment of a brush tip polishing apparatus 1 for an interdental brush according to the present invention.

  This polishing apparatus 1 polishes the tip of a straight brush 14 in an interdental brush 11, that is, the tip of a brush 14 in which a plurality of filaments protruding radially in the radial direction have the same length. The processing table 3 is provided with a support frame 2 and a holder 34 for the interdental brush 11, and is supported by the support frame 2 so as to be movable in the front-rear direction and the vertical direction, and the processing table 3 in a vertical plane. A first rotating mechanism 4 that rotates around a horizontal axis, a second rotating mechanism 5 that rotates a holder 34 of the interdental brush 11 around a vertical axis, and a brush 14 of the interdental brush 11 held by the holder 34. The polishing unit 6 includes a pair of polishing units 6 that are sandwiched from the left and right directions while being substantially in contact with the tip.

  The support frame 2 has a pair of support members 21 erected at intervals in the front-rear direction. Each support member 21 has a support pin 22 projecting inwardly. A spring 23 is disposed on the pin 22.

  The processing table 3 includes a main body 31 formed in a box shape and a pair of legs 32 which are located between the pair of support members 21 of the support frame 2 and are vertically suspended at the front and rear ends of the main body 31. And a vertical shaft 33 rotatably supported via a bearing (not shown) on the main body 31, and a holder 34 of the interdental brush 11 provided integrally with the vertical shaft 33. Each leg 32 has a vertical direction. A long hole 32a is formed extending in the direction. Then, a support pin 22 provided with a spring 23 is inserted into a long hole 32 a formed in the leg 32 of the processing table 3, and a nut (not shown) is fixed to the tip of the support pin 22, so that the processing table 3 is attached to the support frame 2. Pull-out is prevented. As a result, the processing table 3 can move in the vertical direction within the range of the long hole 32 a with respect to the support pin 22 of the support frame 2, and the leg 32 compresses the spring 23 disposed on the support pin 22. Thus, the support pin 22 can move in the front-rear direction along the longitudinal direction.

  The first rotating mechanism 4 is connected to the eccentric plate 43 at a position eccentric from the axis of the motor 41, the eccentric shaft 43 connected to the horizontal shaft 42 integral with the shaft of the motor 41, and the horizontal shaft 42, The eccentric shaft 44 penetrates through the main body 31 of the processing table 3, and the eccentric shaft 44 is rotatably supported by the main body 31 of the processing table 3 via a bearing (not shown). Therefore, when the motor 41 is driven to rotate, the eccentric plate 43 rotates via the horizontal shaft 42, and the eccentric shaft 44 connected to the eccentric plate 43 is connected to the axis of the horizontal shaft 42 and the axis of the eccentric shaft 44. It rotates around the axis of the horizontal axis 42 with the eccentric distance as the rotation radius. When the eccentric shaft 44 rotates about the axis of the horizontal shaft 42, the work table 3 that rotatably supports the eccentric shaft 44 rotates following the rotation of the eccentric shaft 44. That is, the work table 3 rotates around the axis of the horizontal shaft 42 with the eccentric distance between the axis of the horizontal shaft 42 and the axis of the eccentric shaft 44 as the rotation radius.

  The second rotating mechanism 5 includes a toothless bevel gear 51 fixed to an eccentric shaft 44 extending in the main body 31 of the processing table 3, and a vertical shaft 33 rotatably supported by the main body 31 of the processing table 3. The holder 34 of the interdental brush 11 is integrally connected to the vertical shaft 33. The bevel gear 52 is fixed and meshes with the toothless bevel gear 51. Therefore, as described above, when the motor 41 is rotated, the eccentric shaft 44 is rotated, and the toothless bevel gear 51 is rotated in the main body 31 of the processing table 3. Then, the bevel gear 52 that meshes with the partial bevel gear 51 is rotated around the axis of the vertical shaft 33. At this time, the bevel gear 51 is provided with teeth only in the circumferential setting range, and therefore the bevel gear 52 rotates only when meshed with the teeth of the bevel gear 51. Specifically, the bevel gear 52, that is, the vertical shaft 33 and the holder 34 are rotated by a set angle corresponding to the set range in which the teeth are provided for one rotation of the toothless bevel gear 51.

  The polishing unit 6 is formed by adhering a polishing sheet 64 such as a sandpaper to a mounting plate 63 pressed and biased to a support plate 61 via a spring 62, and a pair of parallel polishings arranged vertically or substantially vertically. The sheet 64 is gently sandwiched from the left and right directions in a state of being substantially in contact with the tip of the brush 14 of the interdental brush 11 held by the holder 34.

  Next, the case where the front-end | tip of the brush 14 in the interdental brush 11 is grind | polished using the grinding | polishing apparatus 1 comprised in this way is demonstrated.

  First, after inserting and holding the base 15 of the interdental brush 11 cut into the holder 34, although not shown in detail, the pair of polishing units 6 are approached from the left and right directions, and the brush 14 separated by 180 degrees. Clamp it so that it is almost in contact with the tip. Next, when the motor 41 is driven to rotate, the horizontal shaft 42 rotates and the eccentric plate 43 rotates. When the eccentric plate 43 rotates, the eccentric shaft 44 connected to the eccentric plate 43 at a position eccentric from the axis of the horizontal shaft 42 determines the eccentric distance between the axis of the horizontal shaft 42 and the axis of the eccentric shaft 44 as the rotation radius. Rotates around the axis of the horizontal shaft 42. The rotation of the eccentric shaft 44 around the axis of the horizontal shaft 42 is performed by using the processing table 3 that rotatably supports the eccentric shaft 44 as a rotation radius with the distance between the axis of the horizontal shaft 42 and the axis of the eccentric shaft 44 as the rotation radius. Rotate around 42 axes. In other words, the interdental brush 11 held by the holder 34 of the processing table 3 has the horizontal shaft 42 between the polishing sheets 64 of the pair of polishing units 6 arranged vertically while maintaining a vertical posture when viewed from the left-right direction. It rotates around the axis of the horizontal axis 42 with the eccentric distance between the axis and the axis of the eccentric shaft 44 as the rotation radius (see FIG. 2).

  Thereby, the tip of each filament forming the brush 14 is rotated in a slightly bent state with respect to the polishing sheet 64, whereby the periphery thereof is polished and rounded into a substantially hemispherical shape (FIG. 3 ( b)).

  Here, each leg 32 of the processing table 3 is movable in the vertical direction by inserting the support pins 22 provided in the respective support members 21 of the support frame 2 through the elongated holes 32a extending in the vertical direction. By compressing the spring 23 disposed on the support pin 22, the distance from the support material 21 is adjusted, and the spring 23 is movable in the front-rear direction. Therefore, the rotation of the processing table 3 is disassembled and supported by the support frame 2 into a vertical reciprocation and a front-rear reciprocation.

On the other hand, the rotation of the eccentric shaft 44 rotates the missing tooth bevel gear 51 and rotates the bevel gear 52 meshing with the missing tooth bevel gear 51 by a set angle corresponding to the setting range meshing with the teeth of the missing tooth bevel gear 51. Specifically, when the non-toothed bevel gear 51 is rotated 1 via the eccentric shaft 44, bevel gear 52, i.e., sets the interdental brush 11 which is held in a vertical shaft 33 and the holder 34 by an angle of the vertical shaft 33 Since the rotation is performed around the axis, the contact position of the tip of the brush 14 with respect to the polishing sheet 64 is changed by a set angle in the circumferential direction.

  As a result, when the work table 3 rotates around the axis of the horizontal shaft 42, the interdental brush 11 held by the holder 34 of the work table 3 causes the shaft center and the eccentric shaft of the horizontal shaft 42 to be viewed from the left-right direction. While rotating in the vertical direction with the eccentric distance from the axis of 44 as the rotation radius and rotating between the polishing surfaces of the pair of parallel polishing sheets 64 around the axis of the horizontal axis 42, the eccentric axis 44 (the horizontal axis 42 ) Is reduced, and the vertical shaft 33 rotates about its axis. Accordingly, each filament forming the brush 14 of the interdental brush 11 held on the processing table 3 rotates in a state of being substantially in contact with the polishing sheet 64, and the tip thereof can be rounded into a substantially hemispherical shape. Further, the interdental brush 11 rotates by a set angle around the axis of the vertical axis 33 with respect to one rotation of the processing table 3 around the axis of the horizontal axis 42, so that the tip of the brush 14 contacts the polishing sheet 64. The position can be sequentially changed in the circumferential direction by a set angle, and the tip of the brush 14 can be rounded substantially hemispherically over the entire circumference. Thereby, when inserting the interdental brush 11 between teeth, the front-end | tip of each filament which forms the brush 14 contacts a gum smoothly, and generation | occurrence | production of discomfort can be suppressed.

  Here, when the rotation speed of the motor 41 is large, the tip of the brush 14 (filament) is not melted and rounded by heat due to friction of the polishing unit 6 with respect to the polishing sheet 64, but also has a rolling shape. For this reason, the rotational speed of the motor 41 is preferably about 200 rpm or less in order to suppress the generation of frictional heat. In this case, when the contact time of the brush 14 with the polishing sheet 64 of the polishing unit 6 is increased, the frictional heat is increased accordingly, and therefore it is preferably about 4 to 8 seconds.

  The rotation radius of the interdental brush 11 is preferably about 5 to 10 mm corresponding to the length of the brush 14 being 10 mm.

  Further, as the rotation around the vertical axis of the holder 34 with respect to the rotation between the pair of polishing sheets 64 of the interdental brush 11, the tip of the brush 14 tends to become flat as the number of rotations increases. The degree, specifically, the time for polishing the interdental brush 11 (4 to 8 seconds) is preferably set to 3 rotations or less.

  Further, the polishing sheet 64 (sandpaper) of the polishing unit 6 is preferably 1500 to 2000. When it is coarser than this count, it does not have a beautiful rounded tip shape, and it is easy to whip, while when it is fine, the processing time becomes long.

  In order to suppress frictional heat, for example, a coolant in which glycerin 1 is diluted with water 2 may be applied to the brush 14 or the polishing sheet 64.

  On the other hand, in the above-described embodiment, the case where the toothless bevel gear and the bevel gear are used as the second rotating mechanism is illustrated, but the present invention is not limited to the bevel gear, and the toothless spur gear, the spur gear, Worm and worm wheels can also be used.

  By the way, in the interdental brush 11 of embodiment mentioned above, although illustrated about the case where the straight-shaped brush 14 in which the filament which protrudes radially in radial direction aligned to the substantially same length is grind | polished, radial direction It can also be applied to the case of polishing the brush 14 formed in a tapered shape in which the length of the plurality of filaments protruding in the direction gradually increases toward the base 15 side.

  For example, as shown in FIG. 4, an inclined shaft 35 may be used in place of the vertical shaft 33 of FIG. In this case, the inclined shaft 35 corresponds to a taper angle based on the radial protrusion length of the upper filament and the radial protrusion length of the lower filament in the brush 14, and a single tip in which the tip of the brush 14 is arranged vertically. The inclination angle is set so as to substantially contact the polishing sheet 64. In this embodiment, corresponding to the taper angle of the brush 14 of the interdental brush 11 being 5 degrees, the inclination angle of the inclined shaft 35 is set to 85 degrees with respect to the horizontal plane.

  Also in this embodiment, after inserting and holding the base 15 of the interdental brush 11 cut into the holder 34, the polishing sheet 64 of the polishing unit 6 is substantially in contact with the tip of the brush 14 of the interdental brush 11. To get closer. Next, when the motor 41 is driven to rotate, the horizontal axis 42, the eccentric plate 43, and the eccentric shaft 44, the processing table 3 is set to the horizontal axis with the distance between the axis of the horizontal axis 42 and the axis of the eccentric shaft 44 as the rotation radius. Rotate around 42 axes. For this reason, the interdental brush 11 held by the holder 34 of the processing table 3 maintains the inclined posture in which the tip of the tapered brush 14 is substantially in contact with the polishing surface of the polishing sheet 64 of the polishing unit 6. It rotates around the axis of the horizontal axis 42 with the eccentric distance between the axis and the axis of the eccentric shaft 44 as the rotation radius.

  Thereby, the tip of each filament forming the brush 14 is rotated in a slightly bent state with respect to the polishing sheet 64, whereby the periphery thereof is polished and processed into a substantially hemispherical shape.

  Further, the eccentric shaft 44 is rotated around the axis of the inclined shaft 35 by a set angle by the bevel gear 52, that is, the interdental brush 11 held by the inclined shaft 35 and the holder 34, through the toothless bevel gear 51. Therefore, the contact position of the tip of the tapered brush 14 with respect to the polishing sheet 64 is changed by a set angle in the circumferential direction.

  As a result, when the work table 3 rotates about the axis of the horizontal shaft 42, the interdental brush 11 held by the holder 34 of the work table 3 maintains the inclined posture and the shaft center of the horizontal shaft 42. It rotates around the axis of the horizontal axis 42 with the eccentric distance from the axis of the eccentric shaft 44 as the rotation radius, and rotates around the axis of the inclined shaft 35 by reducing the rotational speed of the eccentric shaft 44 (horizontal axis 42). To do. Therefore, each filament forming the brush 14 of the interdental brush 11 held on the processing table 3 rotates in a state of being substantially in contact with the polishing sheet 64, whereby the tip can be rounded into a substantially hemispherical shape. . Further, the interdental brush 11 rotates by a set angle around the axis of the inclined shaft 35 with respect to one rotation of the processing table 3 around the axis of the horizontal axis 42, thereby bringing the tip of the brush 14 into contact with the polishing sheet 64. The position can be sequentially changed in the circumferential direction by a set angle, and the tip of the brush 14 can be rounded substantially hemispherically over the entire circumference.

DESCRIPTION OF SYMBOLS 1 Polishing apparatus 2 Support frame 3 Processing stand 33 Vertical axis 34 Holder 35 Inclination axis 4 1st rotation mechanism 42 Horizontal axis 44 Eccentric shaft 5 2nd rotation mechanism 51 Detached bevel gear 52 Bevel gear 6 Polishing unit 64 Polishing sheet

Claims (6)

A base, a wire rod portion projecting from the distal end of the base onto the central axis of the base, and a plurality of rods provided at the distal end of the wire rod portion and projecting radially in a direction perpendicular to the wire rod portion After maintaining the interdental brush consisting of a straight brush section with filaments of approximately the same length in a state where the brush tip is substantially in contact with the polishing sheet, the interdental brush is maintained in a posture with respect to the polishing sheet. And rotating the interdental brush around a longitudinal axis thereof by a set angle to polish the brush tip over the entire circumference, and rotating the brush tip over the entire circumference. . The brush tip polishing method for an interdental brush according to claim 1,
Brush Tip polishing method of interdental brush, characterized in that sandwich the front Kivu brush tip in a substantially contacting state with a pair of abrasive sheet having parallel polished surface. A base, a wire rod portion projecting from the distal end of the base onto the central axis of the base, and a plurality of rods provided at the distal end of the wire rod portion and projecting radially in a direction perpendicular to the wire rod portion After holding the interdental brush composed of the brush portion formed in a tapered shape whose length gradually increases toward the base side in a state where the brush tip is substantially in contact with the polishing sheet The interdental brush is rotated at a set radius while maintaining the posture with respect to the polishing sheet, and the interdental brush is rotated around the longitudinal axis by a set angle to polish the tip of the brush over the entire circumference. A brush tip polishing method for an interdental brush. A base, a wire rod portion projecting from the distal end of the base onto the central axis of the base, and a plurality of rods provided at the distal end of the wire rod portion and projecting radially in a direction perpendicular to the wire rod portion A polishing device that polishes the tip of the brush against an interdental brush composed of a straight brush portion in which filaments of the same length are aligned to approximately the same length,
A holder for holding the interdental brush on the processing table is rotatably supported via a vertical axis corresponding to a straight brush in the interdental brush, while being moved to an eccentric position via an eccentric plate on a horizontal axis extending in the left-right direction. The connected eccentric shaft is rotatably supported on the work table, the eccentric shaft is provided with a toothless gear, the vertical shaft is provided with a gear that meshes with the toothless gear, and the straight brush tip of the interdental brush is provided. A pair of polishing sheets that are substantially in contact and sandwiched from the left and right sides are provided, the horizontal shaft is rotated, and the interdental brush held on the processing table is maintained in a vertical posture with respect to the polishing sheet while being eccentric between the pair of polishing sheets. The center axis of the horizontal axis is rotated around the axis of the horizontal axis with the eccentric distance between the axis of the horizontal axis and the axis of the horizontal axis, and the interdental brush is rotated around the axis of the vertical axis via the missing gear and the gear. Set angle only rotate, brush tip polishing apparatus interdental brush a straight brush tip characterized by polishing over the entire circumference with respect to one rotation of the horizontal axis. A base, a wire rod portion projecting from the distal end of the base onto the central axis of the base, and a plurality of rods provided at the distal end of the wire rod portion and projecting radially in a direction perpendicular to the wire rod portion The filament is a polishing device that polishes the brush tip with respect to the interdental brush composed of a brush portion formed in a tapered shape whose length gradually increases toward the base side,
The holder for holding the interdental brush on the work table is rotatably supported via an inclined shaft having an inclination angle corresponding to the taper angle of the tapered brush in the interdental brush, while being eccentric to a horizontal axis extending in the left-right direction. An eccentric shaft connected to the eccentric position via the plate is rotatably supported on the work table, and the eccentric shaft is provided with a partial bevel gear, and the inclined shaft is provided with a bevel gear meshing with the partial gear. A polishing sheet that is substantially in contact with the tip of the tapered brush in the interdental brush is provided, and the axis of the eccentric shaft is maintained while rotating the horizontal axis and maintaining the inclined posture of the interdental brush held on the processing table with respect to the polishing sheet. the horizontal axis is rotated about the axis of the horizontal axis, the interdental brush about the axis of the tilt axis through the non-toothed bevel gears及Bikasa gear as a rotation radial eccentricity of the axis of the horizontal axis Only set angle with respect to one rotation is rotated, tapered brush tip polishing apparatus interdental brush, characterized in that the brush tip is polished over the entire circumference.   The brush tip polishing apparatus for an interdental brush according to claim 4 or 5, further comprising a support frame that supports the processing table so as to be movable in the vertical direction and the front-rear direction. apparatus.

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