JPH09267271A - Brush head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily correct abrasion of grinding brushes even at operation time by providing the grinding brushes installed in a rotational driving part through a shaft and a brush shaft adjusting part to advance and retreat the shaft in its shaft direction. SOLUTION: A shaft 3 on which grinding brushes 10 are installed is supported with a base stand 6 so as to advance and retreat in the shaft direction. The shaft 3 is connected to a brush shaft adjusting part 5 which can be operated by remote control. On the other hand, a brush cover 2 arranged on the outer periphery of the grinding brushes 10 is restrained in the shaft direction to the base stand 6, and is rotatably supported. Therefore, the grinding brushes 10 are advanced to and retreated from the brush cover 2 by controlling the brush shaft adjusting part 5 by remote control, and abrasion of the grinding brushes is adjusted without relying on manpower.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a brush head equipped with a grinding brush in, for example, a brush grinding device for grinding an end surface of a steel material.

[0002]

2. Description of the Related Art A brush head 9 in a conventional brush grinding apparatus, as shown in FIG. 6, has a shaft 93 to which a grinding brush 90 is attached, a rotary drive unit 94 for rotating the shaft 93, and a base for supporting them. It consists of a stand 96. A rotating bearing 97 is provided between the shaft 93 and the base 96. A cylindrical brush cover 92 is provided on the outer periphery of the grinding brush 90.

The brush cover 92 is provided for the purpose of preventing the brush bristles 910 of the grinding brush 90 from collapsing, and the brush bristles 910 having a length necessary for grinding project from the tip thereof. Further, the brush cover 92 is
The brush 90 is arranged so as to be movable back and forth in the axial direction. Therefore, the protrusion amount of the brush bristles 910 can be adjusted (wear correction) by retracting the brush cover 92 according to the wear of the brush bristles 910. As a specific structure, for example, as shown in FIG. 7, a long hole 922 is provided in the brush cover 92, and the brush cover 92 is fixed to the grinding brush 90 by a bolt 98 passing through the long hole 922. You can

[0004]

However, the conventional brush head 9 has the following problems. That is, when the wear of the grinding brush 90 is corrected, it is necessary to retract the brush cover 92 with respect to the grinding brush 90 as described above, but this adjustment work must be done manually. I won't.

Therefore, it is very complicated to correct the abrasion of the grinding brush. Especially when a large number of grinding brushes are used, much time is required. Furthermore, since it is a manual work, it is necessary to stop the device safely for safety, which causes a significant loss of operating time. Under these circumstances, there has been a demand for the development of a brush head that can easily correct the wear of the grinding brush even when the apparatus is in operation without human intervention.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to easily correct the abrasion of the grinding brush without manpower and during operation.
It is intended to provide a brush head.

[0007]

According to a first aspect of the present invention, there is provided a grinding brush attached to a rotary drive unit via a shaft, a cylindrical brush cover arranged at least on an outer periphery of the grinding brush, and the shaft. The brush cover is slidably mounted on the shaft via a sliding bearing, and the sliding bearing is a rotating bearing with respect to a base. The brush shaft adjusting portion has an axis adjusting arm for rotatably supporting the shaft, and an advance / retreat adjusting device for moving the axis adjusting arm forward / backward. It is on the brush head.

Most notably in the present invention, the brush cover is axially restrained and rotatably supported on the base, while the shaft to which the grinding brush is attached is The brush shaft adjusting portion is arranged so as to be movable back and forth in the axial direction with respect to the base. That is, the grinding brush is configured to be movable back and forth with respect to the brush cover by the brush shaft adjusting portion.

The grinding brush exhibits a grinding function by, for example, arranging brush bristles of steel wire or the like on a disc-shaped flange and rotating the bristles to bring them into contact with a material to be ground. . Further, the brush cover provided on the outer periphery of the grinding brush holds the brush bristles of the grinding brush from the outer peripheral portion to prevent the brush bristles from collapsing. The bristles of the grinding brush are used in a state of protruding from the tip of the brush cover by a length suitable for grinding.

As the advancing / retreating adjuster constituting the brush shaft adjusting section, for example, an actuator such as a hydraulic or pneumatic cylinder or an electric feed screw mechanism can be used. Examples of the rotation drive unit include an electric motor. In addition, the connection between the rotary drive and the shaft is directly fixed,
It is not limited to these, such as indirect fixing via a transmission and transmission fixing via a gear or belt transmission mechanism.

The brush head is usually used by being incorporated in a single or plural brush grinding apparatus. As this brush grinding device, for example, there is a so-called planetary brush grinding device having a structure in which a plurality of brush heads are revolved and the grinding brushes in each brush head are respectively rotated.

Next, the function and effect of the present invention will be described. In the brush head of the present invention, the shaft to which the above-mentioned grinding brush is attached is supported so as to be movable back and forth in the axial direction with respect to the base. The shaft is connected to the brush shaft adjusting unit, and can be moved back and forth by an arbitrary distance at an arbitrary timing by its operation.

On the other hand, the brush cover provided at least on the outer periphery of the grinding brush is axially restrained with respect to the base and is rotatably supported. The brush cover is attached to the grinding brush so as to be slidable in the axial direction. Therefore, by moving the shaft back and forth, the grinding brush moves back and forth with respect to the brush cover, and the amount of protrusion of the brush bristles can be easily adjusted to an arbitrary amount. Further, the forward / backward movement of the shaft does not hinder the rotational movement thereof. Therefore, wear can be corrected even during operation of the device.

Therefore, it is not necessary to manually perform the work of correcting the wear, and it is not necessary to stop the brush grinding device when the wear is corrected, unlike the conventional case. Also, like this,
Since it is very easy to correct wear, it is possible to perform finer correction than before and always maintain the amount of protrusion of the brush bristles to the optimum amount for grinding.

In particular, the amount of abrasion of the brush bristles is controlled by detecting a grinding load current, vibration detection, etc., a displacement sensor, a photoelectric tube,
It is preferable to detect using control by image processing. As a result, sliding the brush cover or the grinding brush according to the detected amount can be automated, so that the grinding amount can be made constant and uniform grinding can be performed. Therefore, according to the present invention, it is possible to greatly improve the work efficiency as compared with the conventional method and always obtain the optimum grinding conditions.

Next, as in the invention of claim 2, the brush cover is a cylindrical outer cover arranged on the outer circumference of the grinding brush and a cylindrical inner cover arranged on the inner circumference of the grinding brush. And a plurality of supports connecting the outer cover and the inner cover. As a result, it is possible to prevent the brush bristles from collapsing not only from the outer periphery but also from the inner periphery. Further, since the inner cover is integrated with the outer cover by the support body, it can be moved forward and backward together with the outer cover with respect to the shaft.

Further, as in the invention of claim 3, it is preferable that the brush cover has a partition plate connected to at least two of the outer cover, the inner cover and the support. As a result, not only the outer peripheral side or the inner peripheral side of the brush bristles but also the ring circumference in which the brush bristles are planted is divided, so that the collapse of the bristles is further prevented. Further, during the grinding, the brush bristles that come into contact with the material to be ground and are repelled by the pressure repeats the rising operation in the partition plate portion, so that the grinding effect is increased due to the rising effect.

Next, as in the invention of claim 4, it is possible to adopt a structure in which the shaft and the rotary drive portion are fixed. That is, the rotary drive unit and the shaft may be configured to integrally move back and forth by the brush shaft adjusting unit. In this case, the connection structure between the rotary drive unit and the shaft can be made simple and strong.

Further, as in the fifth aspect of the present invention, the shaft and the rotary drive portion may be structured so as to be slidable in the axial direction and integrally rotatable. That is, the shaft and the rotation driving unit can be connected to each other so as to be slidable in the axial direction by, for example, a spline or a key system. As a result, it is possible to adopt a structure in which the shaft is advanced and retracted while the rotary drive unit is fixed.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. 1 shows a brush head according to an embodiment of the present invention.
This will be described with reference to FIG. As shown in FIG. 1, the brush head 1 of this example includes a grinding brush 10 attached to a motor 4 as a rotary drive unit via a shaft 3, and a cylindrical brush arranged around the grinding brush 10. It comprises a cover 2 and a brush shaft adjusting portion 5 for moving the shaft 3 forward and backward in the axial direction.

The brush cover 2 is slidably mounted on the shaft 3 via a sliding bearing 81, and the sliding bearing 81 is supported on the base 6 via a rotating bearing 71. The brush shaft adjusting unit 5 includes an axis adjusting arm 52 that rotatably supports the shaft 3 and an advance / retreat adjusting device 51 that advances and retracts the shaft adjusting arm 52. Hereinafter, this will be described in detail.

The grinding brush 10 is, as shown in FIG.
3 brush hairs 11 made of a large number of 0.4 mm diameter hard steel wires
Donut-shaped hair is erected on the outer periphery of a disk-shaped flange 12 having an outer diameter of 00 mm. The length of flocking is 60 mm. Further, the grinding brush 10 is fixed to the shaft 3 by tightening the central portion of the flange 12 with the nut 32. The shaft 3 and the flange 12 have an engagement portion (not shown) for preventing idling.

As shown in FIG. 1, the shaft 3 has an engaging hole 34 at its rear end for inserting and engaging the motor shaft 41 of the motor 4. The motor shaft 41 and the engagement hole 34 are engaged with each other so as to rotate integrally by fitting using, for example, a spline or a key system. Also, shaft 3
As shown in FIG. 1, the brush cover 2 is attached to the tip end side to which the grinding brush 10 is attached. The brush cover 2 has a cylindrical shape with an inner diameter of 308 mm and an outer diameter of 320 mm.
It is arranged without contacting with 2.

Further, the brush cover 2 has a cylindrical cover base portion 21 at its rear end, and its inner surface 210 is mounted on the shaft 3 via a slide bearing 81. The sliding bearing 81 supports the brush cover 2 so as to be slidable in the axial direction of the shaft 3, but is restrained in the rotational direction of the shaft 3. Therefore, the brush cover 2
The shaft 3 can rotate integrally with the shaft 3 and can slide in the axial direction. Therefore, by rotating the motor 4, the shaft 3, the grinding brush 10, and the brush cover 3 are integrally rotated.

Further, the brush cover 2 is rotatably fixed to the base 6 via the rotation bearing 71 on the outer peripheral surface of the cover base 21. The rotating bearing 71 is a so-called bearing, and axially restrains the brush head 2 with respect to the base 6. The base 6 is fixed to the apparatus main body side when the entire brush head 1 is incorporated in a brush grinding device (not shown).

Further, as shown in FIG. 1, the shaft 3 has a shaft adjusting arm 52 via rotating bearings 72 and 73.
Is rotatably mounted. In addition, the bearing 72 for rotation,
Reference numeral 73 is a so-called bearing, which axially restrains the shaft adjusting arm 52 with respect to the shaft 3.

The shaft adjusting arm 52 is composed of a cylindrical cylindrical portion 521 and a flange-shaped arm portion 522. One end of the arm portion 522 is connected to the motor mount 48 for fixing the motor 4, and the other end is connected to the advancing / retreating shaft 512 of the advancing / retreating adjuster 51. The advance / retreat adjuster 51 in this example uses an electric feed screw mechanism to advance / retreat the shaft 51.
It moves back and forth and can be operated remotely.

The advancing / retreating adjuster 51 is directly fixed to the base 6 as shown in FIG. On the other hand, the axis adjusting arm 52
The outer surface side of the cylindrical portion 521 is supported by the base 6 via a slide bearing 82. That is, the brush shaft adjusting unit 5
The forward / backward adjuster 51 is fixed to the base 6, and the axis adjusting arm 52 is arranged so as to be slidable in the axial direction with respect to the base 6. Therefore, the forward / backward adjuster 51
Is driven, the shaft adjusting arm 52 moves forward and backward with respect to the base 6, and the shaft 3, the grinding brush 10, and the motor 4 move forward and backward integrally therewith.

Next, the operation of this embodiment will be described.
In the brush head 1 of this example, the shaft 3 to which the grinding brush 10 is attached is supported by the base 6 so as to be movable back and forth in the axial direction. The shaft 3 is connected to the brush shaft adjusting unit 5 which can be remotely operated.

On the other hand, the brush cover 2 provided on the outer periphery of the grinding brush 10 is axially restrained with respect to the base 6 and rotatably supported. Therefore, by remotely operating the brush shaft adjusting unit 5, the grinding brush can be easily moved back and forth with respect to the brush cover 2.

Further, the forward / backward movement of the shaft 3 does not hinder the rotational movement thereof. Therefore, in this example, the wear of the grinding brush can be easily adjusted without manpower even during operation of the brush grinding device.

Embodiment 2 As shown in FIG. 2, the brush head 102 of the present embodiment uses the motor 4 of the brush head 1 of the embodiment 1 as a base 6 as shown in FIG.
It was configured to be fixed to 6. That is, the motor 4 and the shaft 3 are connected and fixed so as to be integrally rotatable.

On the other hand, the base 6 is not fixed to the base 66. Therefore, by adjusting the advancing / retreating adjuster 51 in the brush shaft adjusting unit 5, the base 6 not fixed to the base 66 slides in the axial direction of the shaft. Further, along with this advance / retreat, the brush cover 2 advances / retreats.
Others are the same as those in the first embodiment. The same reference numerals are used for the same functional units as in the first embodiment.

In this example, the parts that slide when the wear of the grinding brush 10 is corrected are the brush cover 2 and the base 6, so that the parts can be made lighter than the case of the first embodiment. The wear can be corrected more smoothly. Therefore, the power required for sliding can be set low, and the advancing / retreating adjuster 51 of the brush shaft adjusting unit 5 can be made small.

Embodiment 3 As shown in FIG. 3, the brush head 103 of this embodiment has a motor 4 and a base 6 in the brush head 1 of embodiment 2.
Is fixed to the base 66. The motor 4 and the shaft 3 are connected by a key system so as to be slidable in the axial direction and integrally rotatable. Therefore, by adjusting the advancing / retreating adjuster 51 in the brush shaft adjusting unit 5, the shaft adjusting arm slides with respect to the base 6 to move the grinding brush 10 back and forth. Others are the same as those in the first embodiment. The same reference numerals are used for the same functional units as in the first embodiment.

In this example, the portion of the grinding brush 10 that slides when the wear is corrected is the arm 6 for adjusting the axis and the grinding brush 10 for the base 6 and the brush cover 2.
Therefore, the tip portion of the brush bristles 11 can be made constant. Therefore, one of the materials to be ground can be fixed and ground, which is effective when grinding a long material or a heavy object.

Fourth Embodiment As shown in FIG. 4, the brush head 104 of the present embodiment has a brush cover 200 having an outer cover 201 arranged on the outer periphery of the grinding brush 10 and an inner cover 20 arranged on the inner periphery thereof.
2 and two supports 203 connecting the outer cover 201 and the inner cover 202.

The inner cover 202 has the same end surface in parallel with the outer cover 201 in the axial direction of the shaft 3, and the brush bristles 11 uniformly project from the outer cover 201 and the inner cover 202. Is configured. In addition, the spline 204 of the outer cover 201
And the outer peripheral surface of the flange 12 that fixes the brush bristles 11 are fitted together, so that the grinding brush 10 and the brush cover 200 rotate integrally. Others are the same as those in the first embodiment. The same reference numerals are used for the same functional units as in the first embodiment.

The brush head 104 according to the present embodiment has the brush cover 200 not only on the outer peripheral side of the grinding brush 10 but also on the inner peripheral side thereof.
Since it is surrounded by, it is possible to prevent the collapse of the brush bristles 11 from the inner peripheral side, and, like the first embodiment, the brush bristles 1
1, the brush cover 104 can be moved back and forth.

Fifth Embodiment As shown in FIG. 5, the brush head 105 of the present embodiment has a brush cover 210 in which an outer cover 211 arranged on the outer circumference of the grinding brush 10 and an inner cover 21 arranged on the inner circumference thereof.
2, two supports 213 that connect the outer cover 211 and the inner cover 212, and a partition plate 21 that connects the outer cover 211, the inner cover 212, and the support 213.
4.

That is, the brush head 105
Has a configuration in which a partition plate 214 is provided in the configuration of the fourth embodiment. More specifically, the outer cover 2
A chamber surrounded by 11 and the inner cover 212 in a donut shape is divided into two chambers by two partition plates 214. Others are the same as the fourth embodiment. The same reference numerals are used for the same functional units as in the fourth embodiment.

The brush head 105 of this example is composed of the partition plate 2
Since the brush bristles 14 are provided, it is possible to prevent the brush bristles 11 from falling not only in the inner and outer peripheral directions of the grinding brush 10 but also in the inner peripheral direction of the ring in which the brush bristles 11 are planted. Further, the amount of grinding can be further increased by the rising effect at the partition plate 214 portion. Further, as in the case of the fourth embodiment, the brush cover 105 can be moved back and forth as the brush bristles 11 are worn.

[0043]

As described above, according to the present invention, it is possible to provide a brush head capable of correcting the wear of a grinding brush easily without any human intervention.

[Brief description of drawings]

FIG. 1 is a sectional view of a brush head according to a first embodiment.

FIG. 2 is a sectional view of a brush head according to a second embodiment.

FIG. 3 is a sectional view of a brush head according to a third embodiment.

FIG. 4 is an enlarged cross-sectional view of a brush head of a fourth embodiment on a grinding brush side.

FIG. 5 is an enlarged cross-sectional view of a brush head of a fifth embodiment on the side of a grinding brush.

FIG. 6 is a cross-sectional view of a conventional brush head 1.

FIG. 7 is a front view of a grinding brush equipped with a brush cover in a conventional example.

[Explanation of symbols]

 1. . . Brush head, 10. . . Grinding brush, 2. . . Brush cover, 3. . . Shaft, 4. . . Motor (rotary drive unit), 5. . . Brush shaft adjusting section, 51. . . Advance / retreat adjuster, 52. . . Axis adjustment arm, 6. . . Base, 71, 72, 73. . . Bearings for rotation, 81, 82. . . Bearings for slides,

Claims (5)

[Claims] 1. A grinding brush attached to a rotary drive unit via a shaft, a cylindrical brush cover arranged at least on the outer periphery of the grinding brush, and a brush for advancing and retracting the shaft in the axial direction. It consists of an axis adjustment part,
The brush cover is slidably mounted on the shaft via a slide bearing, and the slide bearing is supported on the base via a rotary bearing. A brush head, comprising: an axis adjusting arm that rotatably supports the shaft, and an advance / retreat adjuster that advances and retracts the axis adjusting arm. 2. The brush cover according to claim 1, wherein the brush cover is a cylindrical outer cover arranged on the outer circumference of the grinding brush, a cylindrical inner cover arranged on the inner circumference of the grinding brush, and the outer cover. A brush head comprising a plurality of supports for connecting the inner cover and the inner cover. 3. The brush head according to claim 2, wherein the brush cover has a partition plate connected to at least two of the outer cover, the inner cover and the support. 4. The brush head according to claim 1, wherein the connection between the shaft and the rotary drive unit is fixed. 5. The brush head according to claim 1, wherein the shaft and the rotary drive unit are coupled so as to be slidable in the axial direction and integrally rotatable.