Abrasive cloth wheel

Abstract

The utility model relates to the technical field of grinding tools, in particular to an abrasive cloth wheel. Comprising a base body and abrasive cloth blades, the base body is sequentially provided with a hole ring, an annular fixing face and a mounting ring face from inside to outside, the abrasive cloth blades are obliquely arranged and fixed to the mounting ring face, the abrasive cloth blades are circumferentially arranged on the mounting ring face, the adjacent abrasive cloth blades partially cover to form a grinding part, and the hole ring comprises a first connecting part and a second connecting part which are fixedly connected; the axes of the first connecting part and the second connecting part coincide, through holes are formed in the middle of the first connecting part and the middle of the second connecting part to form a mounting hole in the base body, and the cross section of the mounting hole is in a regular polygon shape. The through holes are formed in the middles of the first connecting part and the second connecting part on the hole ring to form the mounting hole in the base body, the cross section of the mounting hole is polygonal and is matched with the outer side shape of the limiting boss on the pressing plate, relative rotation of the abrasive cloth wheel and the pressing plate is avoided, and abrasion consumption of the base body, the pressing plate and the nut is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to grinding tool technical field especially relates to a sand cloth wheel. BACKGROUND

[0002] The sand cloth wheel plays an important role in industrial production, is widely used in industrial production and processing, mainly plays the role of polishing, and is used in the production of large automobiles, ships and aviation equipment, small jade, shoes heels and stainless steel products.

[0003] The sand cloth wheel is usually composed of a group of sand cloth pieces arranged in order on a base, the base is mostly made of plastic or grid glass fiber, the base is provided with a mounting hole in the middle, the sand cloth wheel is fixed on the connecting shaft of a special tool or an angle grinder through the mounting hole to perform mechanical or manual polishing, and the connecting shaft of the angle grinder drives the sand cloth wheel to rotate at high speed to polish the workpiece.

[0004] When the sand cloth wheel is installed on the angle grinder, the inner side surface of the hole ring on the base is attached to the outer side surface of the limiting boss of the pressing plate of the angle grinder, and then the sand cloth wheel is pressed between the nut and the pressing plate through the threaded connection of the nut and the connecting shaft to limit and fasten the sand cloth wheel.

[0005] The cross section of the inner side surface of the hole ring on the existing base is mostly circular, and the fastening of the sand cloth wheel is completely realized by the threaded connection of the nut and the connecting shaft, and the pressing of the base. After the sand cloth wheel is used for a period of time, the pressing plate and the nut are prone to wear, resulting in insufficient pressing force, loose sand cloth wheel, and the need to replace the pressing plate and the nut, thereby increasing the production cost. SUMMARY

[0006] In order to solve the problem that the fastening of the existing sand cloth wheel is completely realized by the nut pressing, the pressing plate and the nut on the angle grinder are prone to wear after being used for a period of time, resulting in insufficient pressing force and loose sand cloth wheel, the utility model provides a sand cloth wheel, a through hole is arranged in the middle of the first connecting part and the second connecting part on the hole ring, forming the mounting hole on the base, the cross section of the mounting hole is polygonal, and the outer side shape of the limiting boss on the pressing plate of the angle grinder is matched, avoiding the relative rotation of the sand cloth wheel and the pressing plate, and reducing the wear and tear of the base, the pressing plate and the nut.

[0007] In order to achieve the above purpose, the technical scheme of the utility model is:

[0008] The sand cloth wheel comprises a base body and sand cloth blades, the base body is provided with a hole ring, an annular fixing surface and a mounting ring surface from inside to outside, the sand cloth blades are obliquely arranged and fixed on the mounting ring surface, one end of the sand cloth blades extends out of the mounting ring surface, the sand cloth blades are arranged in a circle on the mounting ring surface, and adjacent sand cloth blades partially overlap to form a grinding part, the hole ring comprises a first connecting part and a second connecting part which are fixedly connected, the axis of the first connecting part coincides with that of the second connecting part, a through hole is formed in the middle part of the first connecting part and the second connecting part to form a mounting hole on the base body, and the cross section of the mounting hole is a regular polygon. The mounting hole penetrates through a connecting shaft on the angle grinder to contact a pressing plate, a limiting protrusion on the upper side of the pressing plate is matched with the mounting hole with the cross section of a regular polygon, and relative rotation between the base body and the pressing plate is avoided.

[0009] Further, the outer side of the cross section of the first connecting part and the second connecting part is circular.

[0010] Further, the outer side of the cross section of the first connecting part is circular, and the diameter of the outer side of the cross section of the first connecting part is smaller than that of the second connecting part.

[0011] Further, the first connecting part and the second connecting part are integrally formed.

[0012] Further, the second connecting part is located on the back of the base body, a convex-shaped groove for mounting the hole ring is formed on the back of the base body, and the end of the second connecting part can partially extend out of the groove or be flush with the groove.

[0013] Further, the end surface of the first connecting part away from the second connecting part is flush with the end surface of the inner side of the annular fixing surface.

[0014] Further, the lowest height of the bottom surface of the mounting ring surface is higher than the bottom surface height of the hole ring. When the mounting ring surface is inclined downward, the lowest height of the bottom surface of the mounting ring surface is higher than the bottom surface height of the hole ring, so that the sand cloth wheel does not interfere with the angle grinder during polishing.

[0015] Further, the annular fixing surface is an arc surface, and the inner side of the arc surface is low and the outer side is high.

[0016] Further, the mounting ring surface is inclined or horizontally arranged.

[0017] Further, the base body is a disc body made of glass fiber.

[0018] The beneficial effects of this utility model through the above technical solution are as follows: This utility model has a convex groove for mounting a hole ring on the back of the base. A through hole is opened in the middle of the first connecting part and the second connecting part on the hole ring, thereby forming a mounting hole on the base. The cross-section of the mounting hole is polygonal. The mounting hole passes through the connecting shaft on the angle grinder and contacts the pressure plate. The limiting protrusion on the upper side of the pressure plate cooperates with the mounting hole with a regular polygonal cross-section to prevent the abrasive wheel and the pressure plate from rotating relative to each other, thereby reducing the wear and consumption of the abrasive wheel, the pressure plate and the nut, improving the service life of the abrasive wheel and saving costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an abrasive wheel according to the present invention;

[0020] Figure 2 This is a top view of an abrasive wheel according to the present invention;

[0021] Figure 3 This is a bottom view of an abrasive wheel according to the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the base of an abrasive wheel according to the present invention.

[0023] Figure 5 This is a schematic diagram of the structure of a sanding wheel with a sanding blade placed on the base.

[0024] Figure 6 This is a schematic diagram of the structure of the perforated ring of an abrasive wheel according to this utility model. Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the structure of the perforated ring of an abrasive wheel according to this utility model. Figure 2 ;

[0026] Figure 8 This is a partial structural cross-sectional view of the base of an abrasive wheel of this utility model, which is mounted on the connecting shaft of an angle grinder.

[0027] In the attached diagram, the following numbers are used: 1 is the base, 2 is the abrasive blade, 3 is the mounting hole, 4 is the connecting shaft, 5 is the pressure plate, 6 is the limiting boss, 7 is the nut, 8 is the fixing block, 11 is the hole ring, 111 is the first connecting part, 112 is the second connecting part, 12 is the annular fixing surface, and 13 is the mounting ring surface. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0029] like Figures 1-8As shown, the embodiment provides a sanding disc, which comprises a base 1 and sanding blades 2, the base 1 is provided with a hole ring 11, an annular fixing surface 12 and a mounting ring surface 13 from inside to outside, the sanding blades 2 are arranged obliquely and fixed on the mounting ring surface 13, in the embodiment, the sanding blades 2 are rectangular, one end of the sanding blades 2 extends out of the mounting ring surface 13, the sanding blades 2 are arranged circumferentially on the mounting ring surface 13, and adjacent sanding blades 2 partially cover to form a grinding part, which can effectively improve the strength of the sanding disc; one side of the base 1 to which the sanding blades 2 are bonded is a front side, and the other side is a back side. The sanding blades 2 are bonded to the base 1 by adhesion.

[0030] The base 1 is a disc body made of glass fiber mesh. The base 1 can also be made of metal and plastic.

[0031] The annular fixing surface 12 is a curved surface, the inner side of the curved surface is low, and the outer side is high. When the mounting ring surface 13 is arranged horizontally, the height of the mounting ring surface 13 is higher than the height of the hole ring 11; when the outer side of the mounting ring surface 13 is inclined downward, the lowest height of the bottom surface of the mounting ring surface 13 is higher than the height of the bottom surface of the hole ring 11. The position interference between the sanding disc and the angle grinder during polishing is avoided.

[0032] Reference Figure 6 The hole ring 11 comprises a first connecting part 111 and a second connecting part 112 which are fixedly connected, the axis lines of the first connecting part 111 and the second connecting part 112 coincide, a through hole is formed in the middle part of the first connecting part 111 and the second connecting part 112 to form a mounting hole 3 on the base 1, and the cross section of the mounting hole 3 is a regular polygon. In the embodiment, the cross section of the mounting hole 3 is a regular hexagon.

[0033] Reference Figure 6 The outer sides of the cross sections of the first connecting part 111 and the second connecting part 112 are circular. The outer side diameter of the cross section of the first connecting part 111 is smaller than the outer side diameter of the cross section of the second connecting part 112. The first connecting part 111 and the second connecting part 112 are integrally formed. A convex slot is formed on the back surface of the base 1 for mounting the hole ring 11, which matches the shape of the hole ring 11, and the base 1 is directly fixed in the slot by adhesion. During fixing, the second connecting part 112 is located on the back surface of the base 1, and the end surface of the first connecting part 111 away from the second connecting part 112 is flush with the end surface of the inner side of the annular fixing surface 12;

[0034] In another implementation manner, the outer side of the cross section of the first connecting part 111 can also be a regular polygon, such as Figure 7 As shown, the outer side of the cross section of the first connecting part 111 is a regular hexagon.

[0035] Reference Figure 8The connecting shaft 4 of the angle grinder is fixed with a fixed block 8, and the connecting shaft 4 is further sleeved with a pressing plate 5, the pressing plate 5 is located on the upper side of the fixed block 8 and is in contact with the fixed block 8, the upper side of the pressing plate 5 is fixed with a limiting boss 6, when the abrasive disc is fixed, the limiting boss 6 extends into the mounting hole 3 of the abrasive disc, the upper part of the connecting shaft 4 is provided with external threads, and a nut 7 is screwed on the connecting shaft 4 to fix the abrasive disc between the nut 7 and the pressing plate 5; the angle grinder drives the abrasive disc to rotate when starting, and then drives the abrasive disc to perform grinding processing.

[0036] In the embodiment, when the cross section of the mounting hole 3 is a regular hexagon, the cross section of the limiting boss 6 on the pressing plate 5 is also a regular hexagon, when the limiting boss 6 extends into the mounting hole 3, the limiting boss 6 and the mounting hole 3 limit each other, the relative rotation between the abrasive disc and the pressing plate 5 is avoided, and the abrasion and consumption of the base body 1, the pressing plate 5 and the nut 7 are reduced.

[0037] The above-mentioned embodiments are only preferred embodiments of the utility model, and are not limited to the scope of the utility model, so equivalent changes or modifications made according to the structure, features and principles of the utility model patent range should be included in the utility model patent range.

Claims

1. A coated abrasive disc, comprising a base (1) and a coated abrasive blade (2), the base (1) is provided with a hole ring (11), an annular fixing surface (12) and a mounting ring surface (13) from inside to outside in turn, the coated abrasive blade (2) is obliquely arranged and fixed on the mounting ring surface (13), characterized in that, One end of the abrasive cloth blade (2) extends out of the mounting ring surface (13), the abrasive cloth blades (2) are arranged circumferentially on the mounting ring surface (13), and adjacent abrasive cloth blades (2) partially overlap to form a grinding part; The hole ring (11) comprises a first connecting part (111) and a second connecting part (112) fixedly connected, the axis of the first connecting part (111) and the second connecting part (112) coincide, a through hole is formed in the middle part of the first connecting part (111) and the second connecting part (112), forming the mounting hole (3) on the base body (1), and the cross section of the mounting hole (3) is a regular polygon.

2. The abrasive cloth wheel of claim 1 wherein, The outer side of the cross section of the first connecting part (111) and the second connecting part (112) is circular.

3. The abrasive cloth wheel of claim 2 wherein, The outer side of the cross section of the first connecting part (111) is circular, and the diameter of the outer side of the cross section of the first connecting part (111) is smaller than the diameter of the outer side of the cross section of the second connecting part (112).

4. The abrasive cloth wheel of claim 1 wherein, The first connecting part (111) and the second connecting part (112) are integrally formed.

5. The abrasive cloth wheel of claim 1 wherein, The second connecting part (112) is located on the back of the base body (1).

6. The abrasive cloth wheel of claim 1 wherein, The end face of the first connecting part (111) away from the second connecting part (112) is flush with the end face of the inner side of the annular fixing surface (12).

7. The abrasive cloth wheel of claim 1 wherein, The bottom surface of the mounting ring surface (13) is higher than the bottom surface of the hole ring (11).

8. The abrasive disk of claim 1 wherein, The annular fixing surface (12) is an arc surface, and the inner side of the arc surface is low and the outer side is high.

9. The abrasive cloth wheel of claim 1 wherein, The mounting ring surface (13) is inclined or horizontally arranged.

10. The abrasive cloth wheel of claim 1 wherein, The base body (1) is a disc body made of glass fiber.

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