JP2749270B2 - Foil type brush - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foil type brush for polishing a surface of metal, non-ferrous metal or the like.

[0002]

2. Description of the Related Art An excellent polishing ability and a good finished surface can be obtained as a tool for polishing and finishing a metal processing surface or a welded portion and polishing and removing burrs and rust generated on the metal surface. Rotary brushes are often used. The rotating brush is generally a cup-type brush or a foil-type brush, and is selectively used depending on the purpose of use and the condition of the surface to be polished.

[0003] Here, a conventional foil type brush will be described. There are a flat type wheel brush shown in FIG. 6 (a) and a roll type wheel brush shown in FIG. 7 (a). As shown in FIG. 6 (b), the flat-type wheel brush basically includes a first disk 1 and a second disk 2 having basically the same shape. Reference numeral 2 denotes a cylindrical portion 5 integrally provided on an outer peripheral portion of a disk portion 4 having a through hole 3 by drawing, and a flange portion 6 is integrally provided at an end of the cylindrical portion 5. Further, a caulking portion 7 is integrally provided on the inner peripheral portion of the through hole 3 of the second disk 2.

Reference numeral 8 denotes a ring brush, which includes a ring portion 9 and a brush portion 1 radially protruding from the ring portion 9.
The brush portion 10 is formed in a disk shape with a synthetic resin wire such as a steel wire, a brass wire, a stainless steel wire, or nylon.

[0005] When assembling the flat wheel brush, a plurality of ring brushes 8 are fitted into the cylindrical portion 5 of the first and second disks 1 and 2 to form the second disk 2. After passing the caulking portion 7 through the through hole 3 of the first disk 1, it is caulked by being bent outward by a press, and the first and second disks 1 and 2 are combined and simultaneously a plurality of sheets are formed. The ring brush 8 is pinched and fixed.

[0006] In place of the press method, FIG.
As shown in the figure, the disk portion 4 of the first or second disk 1, 2
After the protrusions 11 are formed, the disk portions 4 of the first and second disks 1 and 2 are welded to join the first and second disks 1 and 2 and simultaneously a plurality of ring brushes 8 are formed. Is fixed.

FIG. 7 shows a roll-type foil brush.
As shown in FIG. 2B, crimping portions 13 are provided at both ends of the cylindrical core 12, and a fixing ring 14 can be fitted to these crimping portions 13. Then, when assembling the roll-type wheel brush, a plurality of ring brushes 8 are fitted to the core 12, and then the fixing ring 14 is fitted to the caulking portion 13. Next, the caulking portion 13 is pushed outward to prevent the fixing ring 14 from coming off, and at the same time, the fixing ring 14 is pressed against the ring brush 8 to pinch and fix a plurality of ring brushes 8.

[0008] In place of the caulking method, FIG.
As shown in FIG. 1, one end of a long band-shaped brush 15 is welded to one end of the outer periphery of the core 12 and then the band-shaped brush 15 is welded.
Is spirally wound around the outer peripheral surface of the core 12, and the other end of the belt-shaped brush 15 is finally welded to the other end of the core 12 to fix the belt-shaped brush 15 to the core 12.

[0009]

However, FIG.
The flat type wheel brush shown in (b) and FIG.
Since the first and second disks 1.2 are formed by drawing, there is a limit to deep drawing, and it is impossible to increase the number of ring brushes 8 to form a long cylindrical shape. .
Further, in the roll-type wheel brush shown in FIG. 7B, since the fixing ring 14 is fixed by crimping both ends of the core 12, the length of the core 12 gradually increases when reworking is considered. And the core 1 cannot be reused, which is uneconomical. Further, in the roll-type wheel brush shown in FIG. 3C, the core 12 can be reused even when the belt-shaped brush 15 is replaced. However, the belt-shaped brush 15 is wound around the core 12, and welding work at both ends and in the middle thereof is required. It is difficult, it takes a lot of man-hours for the assembly work, and the cost increases.

Further, since the above-mentioned conventional flat type wheel brush and roll type wheel brush are assembled by pressing, caulking, welding, or the like, when the brush portion of the ring brush or the band-shaped brush is worn, a user is required. It is basically impossible to disassemble by yourself and replace only the brush part. Therefore, when the brush part is worn out, it is a choice between disposal and repair, in which the brush is returned to the manufacturer and only the brush part is replaced.In the former case, it is uneconomical, and in the latter case, it is uneconomical. The transportation cost to and from the user increases, and the time required for repair is wasted.

The present invention has been made in view of the above circumstances, and has as its object the user can easily assemble and disassemble himself, and when the brush is worn, the brush can be easily replaced. Another object of the present invention is to provide a foil type brush which can use the core semi-permanently, can reduce the cost required for repair and transportation, and can improve the working efficiency without wasting time.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, according to the present invention, there is provided a cylindrical core, a ring portion fitted to the core, and radially projecting from the ring portion. An annular groove provided along the circumference at least at one end of the core, wherein the annular groove comprises a plurality of ring brushes stacked in the axial direction of the core. A split ring removably engaged with the groove in the radial direction with respect to the axis of the core; and a detachably fitted outer periphery of the split ring for restraining the split ring and stacking the plurality of ring brushes in the stacking direction. And a fixing ring for compressing and fixing the compression ring.

According to a second aspect of the present invention, there is provided a plurality of ring brushes comprising a cylindrical core, a ring fitted to the core, and a brush protruding radially from the ring, and stacked in the axial direction of the core. In the wheel-type brush, the ring-shaped brush is provided with an engagement protrusion provided on an inner peripheral surface of a ring portion and protruding inward, and an engagement protrusion provided on an outer peripheral surface of the core in an axial direction. An engagement groove that engages to prevent the rotation of the ring brush with respect to the core; an annular groove provided along at least one end of the core along the circumference; A split ring that is detachably engaged in the radial direction, and a fixing ring that is detachably fitted to the outer periphery of the split ring to restrain the split ring and compressively fix the plurality of ring brushes in the stacking direction. And wherein the door.

[0014]

By moving the fixing ring in the axial direction of the core, the split ring can be radially split with respect to the axis of the core and can be removed from the core. Therefore, the ring brush can be replaced by removing the ring brush from the core and fitting a new ring brush to the core. Further, an engagement projection is provided on the ring portion of the ring brush, and the engagement of the engagement projection with the engagement groove of the core prevents rotation of the ring brush with respect to the core. Idling can be prevented.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a foil type brush,
FIG. 2 is a perspective view of the assembled state, and FIG. 3 is a longitudinal sectional side view and both end views of the assembled state. In the figure, reference numeral 21 denotes a cylindrical metal core, and annular grooves 22 and 23 are provided at both ends of the core 21 along the circumference thereof. Also, core 2
Two engagement grooves 24 are provided on the outer peripheral surface of the first member in the axial direction.

A snap ring 25 is detachably engaged with the one annular groove 22, and a pair of split rings 26 shown in FIG. 4 is detachably engaged with the other annular groove 23. The split ring 26 has a semi-annular shape, has a substantially L-shaped cross section, and has an engaging portion 26a that engages with the annular groove 23 and a projecting portion 26b that projects from the outer peripheral surface of the core 21. ing.

A fixing ring 27 shown in FIG. 5 is detachably fitted to the outer periphery of the split ring 26. The fixing ring 27 also has a substantially L-shaped cross section, and is fitted to the core 21, and is fitted to an abutting portion 27 a that comes into contact with an end surface of the protruding portion 26 b of the split ring 26 and an outer peripheral surface of the split ring 26. It has a fitting portion 27b.

Therefore, the engaging portion 26a of the split ring 26 is engaged with the annular groove 23 of the core 21, and the split ring 2
By fitting the fixing ring 27 to the outer circumference of the pair 6, the pair of split rings 26 are restrained from moving in the radial direction and fixed to the core 21.

A plurality of ring brushes 28 are detachably fitted to the outer peripheral portion of the core 21. The ring brush 28 includes a ring portion 29 fitted to the core 21 and a brush portion 30 radially protruding from the ring portion 29. The brush portion 30 is made of steel wire, brass wire, stainless wire, nylon, or the like. It is formed in a disk shape by a synthetic resin wire.

Further, two engagement projections 31 are provided on the inner peripheral surface of the ring portion 29 of the ring brush 28 so as to correspond to the engagement grooves 24 of the core 21. Then, the ring portion 29 of the ring brush 28 is located on the end face of the core 21,
With the engagement projection 31 positioned in the engagement groove 24,
By pushing the ring brush 28 in the axial direction of the core 21, the ring brush 28 is fitted to the core 21,
Moreover, the ring brush 28 is non-rotatably restrained with respect to the core 21 by the engagement between the engagement protrusion 31 and the engagement groove 24.

In the figure, reference numeral 32 denotes an end plate having a spacer function, which is formed by an elastic plate such as rubber. Next, the procedure for assembling the foil type brush configured as described above will be described. First, the snap ring 25 is engaged with the one annular groove 22 of the core 21. This snap ring 25
Can be easily engaged by pressing and expanding the opening of the snap ring 25 using a tool. After the engagement, the engagement is held in the annular groove 22 by the restoring force of the spring.

Next, after fitting one end plate 32 from the opposite side of the core 21 (the side to which the snap ring 25 is not attached), a plurality of ring brushes 28 are fitted to the core 21, and 28 are stacked. At this time, as described above, the ring brush 28 is restrained from rotating with respect to the core 21 by engaging the engagement protrusion 31 with the engagement groove 24.

After the last ring brush 28 is fitted to the core 21, the other end plate 32 is fitted to the core 21, and then the fixing ring 27 is fitted to the core 21. Next, the split ring 26 is moved from outside the outer peripheral portion of the core 21 toward the axial direction of the core 21, and the engaging portion 26 a is engaged with the annular groove 23. In this state, when the fixing ring 27 is slightly moved in the direction of the end of the core 21, the abutting portion 27a abuts on the end surface of the protruding portion 26b of the split ring 26, and the fitting portion 27b becomes the outer peripheral portion of the protruding portion 26b. Fits. Therefore, the pair of split rings 26 are restrained so as not to move in the radial direction, and the core 2
Fixed to 1.

At this time, the fixing ring 27 is
6, the split ring 26 is positioned in the annular groove 2
3, the fixing ring 27 is engaged with the annular groove 23.
Although it is necessary to press more inward, the ring portions 29 of the plurality of ring brushes 28 fitted to the core 21 have a certain degree of elasticity in the thickness direction, and have two end plates 32.
Are elastic bodies, these are compressed to fix the fixing ring 27
Can be displaced from the annular groove 23 and the fixing ring 2
In a state in which the ring 7 is fitted to the split ring 26, the fixing ring 27 can be pressed against the split ring 26 by the elastic restoring force of the ring portions 29 and the end plates 32 of the plurality of ring brushes 28, and the fixed state is maintained. be able to.

Conversely, the fixing ring 27 can be disengaged from the split ring 26 by pushing the fixing ring 27 against the elastic restoring force of the ring portions 29 and the end plates 32 of the plurality of ring brushes 28, and the split ring 26 It can be removed to the outside of the core 21 in the radial direction. Therefore, the ring brush 28 can be pulled out from the end of the core 21.

In fixing the ring brush 28 to the core 21 in this way, there is no need to perform pressing, crimping, welding, etc., as in the prior art, and the fixing ring 27 is fitted to the split ring 26. The ring brush 28 can be exchanged for the core 21 on the user side. That is, the user prepares a large number of ring brushes 28 as replacement parts, and when the ring brush 28 in use is worn, the worn old ring brush 28 can be removed by the above-described method and replaced with a new ring brush 28. Therefore, it is not necessary to request the manufacturer to repair the worn foil type brush, the transportation cost is reduced, the repair period is not wasted, and the core 21 can be used semipermanently, which is economical.

In the embodiment, the core 21
The snap ring 25 is engaged with one of the annular grooves 22 and 23 provided at both ends of the ring, the split ring 26 is engaged with the other, and the fixing ring 27 is fitted to the split ring 26. The split ring 26 may be engaged with the annular grooves 22 and 23 at both ends of the core 21, and the fixing ring 27 may be fitted to the split ring 26. With this configuration, the snap ring 25 becomes unnecessary, and the ring brush 28 can be attached and detached from both ends of the core 21.

[0028]

As described above, according to the first aspect of the present invention, the ring brush can be easily attached to and detached from the core, and there is no need to perform pressing, caulking, welding, etc. The ring brush can be fixed to the core only by fitting the fixing ring to the ring, and the user can exchange the ring brush for the core. Therefore, a large number of ring brushes are prepared as replacement parts on the user side, and when the ring brush in use is worn, the worn out old ring brush can be removed and replaced with a new ring brush, and a request for repair of the worn foil type brush to the manufacturer It is economical because there is no need to reduce the cost of transportation and wasted repair time, and the core can be used semi-permanently.

According to the second aspect of the present invention, in addition to the above-described effects, the rotation of the ring brush with respect to the core can be reliably and easily performed without making the fitting portion between the core and the ring portion of the ring brush polygonal. The polishing operation can be performed efficiently without the ring brush running idle due to the resistance applied during the polishing operation.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a foil type brush showing one embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which a fixing ring is fitted to the split ring of the embodiment.

FIG. 3 is a longitudinal sectional side view and both end views of the assembled state of the embodiment.

FIG. 4 is a front view and a side view of the split ring of the embodiment.

FIG. 5 is a front view and a cross-sectional view of the fixing ring of the embodiment.

6A and 6B show a conventional flat wheel brush, wherein FIG. 6A is a perspective view, and FIGS. 6B and 6C are cross-sectional views showing different assembled states.

7A and 7B show a conventional roll-type wheel brush, wherein FIG. 7A is a perspective view, and FIGS. 7B and 7C are cross-sectional views showing different assembled states.

[Explanation of symbols]

21 ... core, 22, 23 ... annular groove, 24 ... engagement groove, 25
Snap ring, 26 Split ring, 27 Fixing ring, 28 Ring brush, 29 Ring part, 30 Brush part, 31 Engagement projection.

Claims (2)

(57) [Claims] A cylindrical core, a ring portion fitted to the core, and a brush portion radially protruding from the ring portion; and a plurality of ring brushes laminated in the axial direction of the core. An annular groove provided on at least one end of the core along the circumference, and a split ring engaged with the annular groove so as to be detachable in a radial direction with respect to the axis of the core. And a fixing ring detachably fitted to the outer periphery of the split ring to restrain the split ring and compress and fix the plurality of ring brushes in the stacking direction. 2. A plurality of ring brushes comprising a cylindrical core, a ring portion fitted to the core, and brush portions radially protruding from the ring portion, and stacked in the axial direction of the core. In the wheel type brush, an engagement protrusion provided on an inner peripheral surface of a ring portion constituting the ring brush and protruding inward is engaged with the engagement protrusion provided on an outer peripheral surface of the core in an axial direction. An engagement groove for preventing rotation of the ring brush with respect to the core, an annular groove provided on at least one end of the core along the circumference, and an annular groove formed radially with respect to the axis of the core. A split ring detachably engaged with the split ring; a fixing ring detachably fitted to an outer periphery of the split ring to restrain the split ring and compress and fix the plurality of ring brushes in the stacking direction. Foil type brushes.