JP3658201B2 - Rotating brush and rotating brush assembly structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotating brush and a rotating brush assembly structure that are mounted on an electric tool, an air tool, and the like and rotated at high speed to polish a surface of metal, non-ferrous metal, or the like.
[0002]
[Prior art]
Many rotating wire brushes have excellent polishing ability and good finished surface as tools for polishing and finishing metal processed surfaces and welds, and polishing and removing burrs and rust generated on metal surfaces. in use.
[0003]
The wire forming the brush portion of the rotating wire brush is a spring steel wire, and the wire is elastically caused by its own elastic force by contact with the polished surface. In addition, the rotating wire brush uses a crimped wire in order to prevent mutual breakage due to the mutual holding effect of the wires and impact.
[0004]
On the other hand, there is grinding with a grindstone as a rotary tool, but the grindstone uses scratching on the grinding surface with abrasive grains, and sandblasting and liquid honing tools are by spraying abrasive grains on the grinding surface. Hammering is used.
[0005]
On the other hand, the rotating wire brush described above is a polishing method that uses both impact and scratch grinding, and as the wire rotates, the tip of the wire approaches the polishing surface, impacts the surface, and then enters scratch grinding from that position. Polish the polished surface.
[0006]
As long as the scratch effect is expected, it is natural that the wire must be harder than the material of the polished material, but considering problems such as fatigue breakage, wear and seizure of the wire due to repeated bending, it is not necessarily hard and requires a large amount of grinding. Things are not good. As the wire diameter increases, the rigidity of the wire increases as the wire diameter increases, and the amount of grinding with a constant pressing amount of the rotating wire brush against the polishing surface increases as the wire diameter increases and the polishing amount also increases. Although it increases, the polishing mark becomes rough and the breakage rate increases. In addition, the wire forming the brush portion becomes more rigid as the bristle length becomes shorter, but the flexibility becomes poor, the hammering effect is lost, and the advantages of the rotating wire brush are greatly reduced.
[0007]
[Problems to be solved by the invention]
Therefore, it is ideal that the rotating wire brush has a lot of hammering effect, a lot of scratching effect, and few breakage of the wire, but the conventional wavy wire type rotating wire brush has no hammering effect and scratching. There are drawbacks that the effect is small and the breakage is large. In addition, a rubber-fixed wavy rotating wire brush filled with rubber in the brush portion has little breakage, but has a scratching effect, but has a drawback of no hammering effect. Furthermore, a rubber-fixed twisted wire rotating wire brush filled with rubber in the brush portion has many scratching effects and little breakage, but has a drawback of no hammering effect.
[0008]
The present invention has been made paying attention to the above circumstances, and the object of the invention is that it has a lot of hammering effect, a lot of scratching effect, and a high polishing force can be obtained by contacting the surface to be polished. Another object of the present invention is to provide a rotary brush and a rotary brush assembly structure that can be seen through the polishing position during polishing that is less likely to break and that has not been considered with conventional rotary brushes.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, according to the present invention, in the first aspect, the intermediate portion of a plurality of wires is hooked on a ring interposed between two annular bodies, and the two sheets including the ring are included. In the rotating brush in which the center part of the annular body is fixed by caulking with a caulking tube and both ends of the wire project radially from between the annular bodies to form a brush part, the multiple wires are drawn multiple by one. A plurality of wire bundles are radially arranged on the outer periphery of the annular body with a gap therebetween, and the adjacent wire bundles in the circumferential direction are alternately inclined in the opposite direction with respect to the annular body to increase the polishing width. A protective layer made of rubber or synthetic resin is formed on the outer periphery of the wire bundle.
[0010]
In the rotating brush of claim 1, the wire bundle is roughened by tilting the wire bundle in the opposite direction with respect to the annular body, thereby widening the pitch of the wire bundle and obtaining a hammering effect. In two rows, when the tip of one wire bundle hits the object to be polished during polishing, the tip of the other wire bundle hits the object to be polished, and there is a sense of stability. There is little, and safety is obtained.
[0011]
According to a second aspect of the present invention, an intermediate portion of a plurality of wires is hooked on a ring interposed between two annular bodies, and a center portion of the two annular bodies including the ring is caulked and fixed by a caulking tube. In a rotating brush in which both ends of the wire protrude radially from between the annular bodies to form a brush portion, a plurality of wire bundles are arranged on the outer periphery of the annular body by aligning the multiple wires. Are arranged radially, with the wire bundles adjacent in the circumferential direction alternately inclined in the opposite direction with respect to the annular body to widen the polishing width, and the outer circumference of the wire bundle is made of rubber or synthetic resin. A protective layer is formed, a convex portion protruding from the annular body is provided at one end of the caulking tube, and the other end is a flat portion.
[0012]
According to a third aspect of the present invention, the convex portions of the two rotating brushes according to the second aspect are abutted and arranged in parallel to increase the polishing width, or the convex portions and the flat portions of the two rotating brushes are abutted and aligned. The rotating brush assembling structure is characterized in that the polishing width can be reduced by providing the rotating brush.
According to the second and third aspects, in addition to the first aspect, the polishing width can be arbitrarily changed according to the object to be polished by simply changing the direction of the rotating brush, and the work efficiency can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a rotating brush, a plan view, and a cross-sectional view taken along the line AA, and FIG. 2 is a perspective view of the rotating brush mounted on an electric tool. In the figure, 1 and 2 are metal annular bodies, and a metal ring 3 is interposed between the two annular bodies 1 and 2. A large number of wires 4 are folded in half on the ring 3, the bent portions 4 a are hooked, and both end portions project radially from the ring 3. The wire 4 used here is a wavy wire such as a steel wire, a brass wire, or a stainless steel wire, and is excellent in cushioning properties, but may be a straight line.
[0014]
A plurality of the wires 4 are arranged one by one, and in this embodiment, the wire bundles 5 are formed in about 20 wire bundles 5 at a predetermined interval in the circumferential direction, and each wire bundle 5 is twisted. Thus, it is formed in a columnar shape. Further, the wire bundles 5 adjacent to each other in the circumferential direction are alternately inclined in the opposite direction with respect to the annular bodies 1 and 2 to widen the polishing width. That is, the wire bundle 5 protruding radially from the ring 3 is inclined at a certain angle alternately diagonally upward and diagonally downward when the annular body 1 is the upper part and the annular body 2 is the lower part. Arc convex portions 6 and arc concave portions 7 are alternately formed on the outer peripheral edges of the annular bodies 1 and 2 located at the roots to hold the root portions of the wire bundle 5.
[0015]
The outer periphery of the wire bundle 5 including the bent portion 4a hooked on the ring 3 is covered with a protective layer 8 to constitute a brush main body 10 having a brush portion 9.
The protective layer 8 is formed by impregnating rubber. This rubber is, for example, NBR (nitrile butadiene rubber) containing acrylonitrile, and has high tensile strength, wear resistance, and heat resistance. Yes. Since this protective layer 8 covers not only the outer peripheral portion of the wire bundle 5 but also the bent portion 4a hooked on the ring 3, that is, the base portion of the brush portion 9, the wire bundle 5 is biased. Without being held at regular intervals in the circumferential direction.
[0016]
In the brush main body 10, the two annular bodies 1 and 2 are caulked and fixed from above and below by the caulking tube 11, and the plurality of wire bundles 5 including the protective layer 8 are caulked and fixed via the ring 3. Further, a convex portion 12 that protrudes from the upper surface of the annular body 1 is formed at one end portion of the crimping tube 11, and a flat portion 13 that is substantially flush with the annular body 2 is formed at the other end portion.
[0017]
As shown in FIG. 2, the rotating brush configured in this way is attached to the rotating shaft of the air tool or the electric tool 14, and the electric tool 14 rotates the rotating brush at a high speed, so that the tip of the brush portion 9 becomes the surface to be polished. By contacting the surface, the surface to be polished can be polished. At this time, since the brush part 9 is formed by a plurality of brush bundles 5 arranged radially with a predetermined interval, the operator passes through the brush part 9 and rotates the surface to be polished while the rotary brush rotates. And can work while seeing through the polished state of the surface to be polished.
[0018]
FIG. 3 shows the use state of the rotating brush, (a) shows how the burrs 16 generated by the punching process of the iron plate 15 are removed, and (b) removes the spatter 17 generated on the surface of the iron plate 15 by welding. A state is shown, (c) shows a mode that the welding trace 18 after welding the iron plate 15 is removed.
[0019]
In any polishing state, by inclining the wire bundle 5 in the opposite direction with respect to the annular bodies 1 and 2 to widen the polishing width, the pitch of the wire bundle 5 becomes rough, and a hammering effect can be obtained. The tips of the bundles 5 are arranged in two rows, and when the tip of one wire bundle 5 hits the surface to be polished during polishing, the tip of the other wire bundle 5 hits the surface to be polished. There is little burden on the operator when working, and safety can be obtained.
[0020]
In addition, according to the said embodiment, although the case where 1 sheet | seat brush was mounted | worn with the electric tool 14 and grind | polished was demonstrated, it can also be used by piled up (parallel arrangement) of 2 sheet | seat brushes. . That is, in FIG. 4A, the polishing width W can be increased by arranging the convex portions 12 and 12 of the two rotating brushes in contact with each other. As shown in FIG. 2B, the polishing width W can be reduced by arranging the convex portions 12 and the flat portions 13 of the two rotating brushes in contact with each other. Therefore, the polishing width W can be arbitrarily changed according to the object to be polished simply by changing the direction of the rotating brush, and the work efficiency can be improved.
[0021]
【The invention's effect】
As described above, according to the rotating brush of the present invention, the desired pressing force can be obtained against the surface to be polished by the elastic force of the protective layer covering the wire bundle during polishing, that is, the desired hammering. Thus, scratching can be maintained, and the polishing efficiency can be improved. Furthermore, since the wire bundles constituting the brush portion project radially with a predetermined interval and are inclined obliquely upward and obliquely downward, the operator passes through the brush portion while the rotating brush rotates. The surface to be polished can be seen through, the work can be performed while seeing through the polished state of the surface to be polished, and the polishing width can be widened with a single rotating brush to improve workability.
[0022]
In addition, if the protrusions of the two rotating brushes are arranged in parallel with each other, the polishing width can be widened, and if the protrusions and flat parts of the two rotating brushes are in contact with each other, the polishing width is increased. Can be narrowed. Therefore, the polishing width can be arbitrarily changed according to the object to be polished simply by changing the direction of the rotating brush, and the working efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is a side view, a plan view, and a cross-sectional view taken along line AA of a rotary brush showing a first embodiment of the present invention.
FIG. 2 is a perspective view of a state where the rotating brush according to the embodiment is mounted on an electric tool.
FIG. 3 is an explanatory view showing different usage states of the rotating brush of the embodiment.
FIG. 4 is a side view showing a state where two rotating brushes of the embodiment are stacked.
[Explanation of symbols]
1, 2 ... annular body 3 ... ring 4 ... wire 5 ... wire bundle 8 ... protective layer

Claims (3)

An intermediate portion of a large number of wires is hooked on a ring interposed between two annular bodies, and the center portions of the two annular bodies including the rings are fixed by caulking pipes. In a rotating brush in which a brush portion is formed by projecting a portion radially between the annular bodies,
A plurality of wires are arranged in a line and a plurality of wire bundles are radially arranged on the outer periphery of the annular body, and wire bundles adjacent in the circumferential direction are alternately arranged on the annular body. The rotating brush is characterized in that the polishing width is increased by inclining in the opposite direction, and a protective layer made of rubber or synthetic resin is formed on the outer periphery of the wire bundle. An intermediate portion of a large number of wires is hooked on a ring interposed between two annular bodies, and the center portions of the two annular bodies including the rings are fixed by caulking pipes. In a rotating brush in which a brush portion is formed by projecting a portion radially between the annular bodies,
A plurality of wires are arranged in a line and a plurality of wire bundles are radially arranged on the outer periphery of the annular body, and wire bundles adjacent in the circumferential direction are alternately arranged on the annular body. Inclined in the opposite direction to widen the polishing width, and a protective layer made of rubber or synthetic resin is formed on the outer periphery of the wire bundle, and a protruding portion that protrudes from the annular body is provided at one end of the caulking tube. A rotating brush having a flat end. The convex parts of the two rotating brushes according to claim 2 are arranged in parallel with each other to increase the polishing width, or the convex parts and flat parts of the two rotating brushes are arranged in parallel to provide a polishing width. A rotating brush assembly structure characterized in that it is possible to narrow the width of the rotating brush.

Images