Quickly-replaceable grinding and polishing abrasive belt wheel

Abstract

The utility model discloses a quick-change grinding and polishing abrasive belt wheel which comprises a supporting body, a fixing mechanism and an abrasive belt disc, the fixing mechanism is arranged on one side of the supporting body and comprises a front cover plate and a rear cover plate, and the abrasive belt disc is arranged between the front cover plate and the rear cover plate. Small holes are formed in the periphery of the middle of the sheet base body, fixing screws are arranged on one side of the rear cover plate, the ends, close to the rear cover plate, of the fixing screws penetrate through the fixing mechanism, the small holes and the supporting body to be in threaded connection with nuts, and a center screw is arranged in the center of the side, away from the supporting body, of the fixing mechanism. The center screw penetrates through the supporting body far away from the fixing mechanism and is in threaded connection with a cutter bar. The front cover plate, the rear cover plate, the supporting body and the abrasive belt disc are fixed through the fixing screws and the nuts, when the abrasive belt wheel is abraded and needs to be replaced, the abrasive belt disc can be replaced by separating the fixing screws from the nuts, the whole abrasive belt wheel does not need to be replaced, and therefore waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of abrasive belt wheels, in particular to a quick-changeable grinding and polishing abrasive belt wheel. Background Art

[0002] Abrasive belt wheels are commonly used equipment for sharpening various knives and tools. They are also used for grinding, deburring and cleaning ordinary small parts. The application number CN200910307850.5 has been retrieved. The supported disc-type grinding wheel not only improves the grinding effect and efficiency, greatly improves the quality and production efficiency of stamping parts, but also greatly reduces the requirements for the technical level of workers.

[0003] Similar to the above-mentioned grinding wheel with support disc: although the support disc is added on the basis of the ordinary grinding machine to improve the grinding effect and grinding efficiency, the existing grinding belt wheels are often unable to be replaced quickly and conveniently. Since the grinding belt wheel uses a disposable adhesive to fix the grinding belt piece, the grinding belt piece cannot be removed after the adhesive is cured. After the wear life of the grinding belt ends, the entire grinding belt wheel including the base part can only be scrapped, and the service life of the base is not fully utilized, resulting in a lot of waste of resources.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a quick-change grinding and polishing belt wheel is proposed to achieve a more practical purpose. Utility Model Content

[0005] The utility model aims to provide a quick-change grinding and polishing belt wheel to solve the problem that the existing grinding belt wheels with supported disc-type grinding wheels mentioned in the above-mentioned background technology are often unable to achieve quick and convenient replacement. Since the grinding belt wheel uses a disposable adhesive to fix the grinding belt sheet, the grinding belt sheet cannot be removed after the adhesive is cured. After the wear life of the grinding belt ends, the entire grinding belt wheel including the base part can only be scrapped, and the service life of the base cannot be fully utilized, resulting in a lot of resource waste.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick-change grinding and polishing wheel, comprising a support body, a fixing mechanism and a sanding belt disc, a fixing mechanism is provided on one side of the support body, the fixing mechanism comprises a front cover plate and a rear cover plate, the front cover plate is tightly attached to the surface of the support body, a rear cover plate is provided on the side of the front cover plate away from the support body, and the sanding belt disc is arranged in the middle of the front cover plate and the rear cover plate.

[0007] Furthermore, the sanding belt disc includes a sanding belt sheet and a thin sheet base. The long sides of the sanding belt sheet are overlapped front and back and evenly distributed around the thin sheet base. The sanding belt sheet and the thin sheet base are connected by glue. The material of the thin sheet base includes but is not limited to rubber sheet, plastic sheet, cardboard or fiber sheet material.

[0008] Furthermore, small holes are arranged around the middle of the sheet substrate, a fixing screw is provided on one side of the rear cover plate, and a nut is threadedly connected to the fixing mechanism, the small hole and the support body at one end of the fixing screw close to the rear cover plate.

[0009] Furthermore, a central screw is provided at the center of one side of the fixing mechanism away from the supporting body, and the central screw passes through the supporting body away from the fixing mechanism and is threadedly connected to a knife rod.

[0010] Furthermore, the knife rod includes a movable rod and a fixed tube, the end of the movable rod away from the center screw is embedded in the fixed tube, a spring is arranged inside the fixed tube, and the end of the spring away from the inner wall of the fixed tube abuts against the movable rod.

[0011] Furthermore, a limiting sliding groove is arranged around the inner arm of the fixed cylinder, and a limiting block is arranged on the outer wall of one side of the movable rod close to the spring, and the limiting block is embedded in the limiting sliding groove.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a quick-changeable grinding and polishing belt wheel, which uses fixing screws and nuts to fix the front cover plate, the rear cover plate and the support body to the abrasive belt disc. When the abrasive belt wheel is worn and needs to be replaced, the fixing screws and nuts can be separated to replace the abrasive belt disc, without replacing the entire abrasive belt wheel, thereby avoiding waste. The specific contents are as follows:

[0013] A fixing screw is provided on one side of the rear cover plate, which can fix the rear cover plate to ensure that the rear cover plate presses the sanding belt wheel onto the supporting body, and the end of the fixing screw close to the rear cover plate passes through the fixing mechanism, the small hole and the supporting body to be threadedly connected with a nut, and the nut cooperates with the fixing screw to fix the front and rear cover plates and the sanding belt disc to the supporting body, and a center screw is provided at the center of the side of the supporting body away from the fixing mechanism, and the center screw fixes the sanding belt wheel to the tool rod, and the center screw passes through the supporting body threadedly connected with the tool rod away from the fixing mechanism, and the tool rod is used to transmit the grinding power from the grinding motor spindle to the sanding belt disc. When the wear life of the sanding belt is over, the center screw is disassembled from the tool rod, the fixing screw and the nut are separated, and the sanding belt disc is taken out, so that the sanding belt disc can be replaced, thereby avoiding the waste caused by replacing the entire sanding belt wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a quick-change grinding and polishing belt wheel of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a quick-change grinding and polishing belt wheel and abrasive belt disc of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of a quick-change grinding and polishing belt wheel cutter bar of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the sanding belt sheet of a quick-change grinding and polishing belt wheel of the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the folding structure of the abrasive belt of a quick-change grinding and polishing belt wheel.

[0019] In the figure: 1. support body; 2. fixing mechanism; 3. front cover; 4. rear cover; 5. abrasive belt disc; 6. abrasive belt; 7. sheet substrate; 8. fixing screw; 9. nut; 10. knife bar; 11. center screw; 12. movable rod; 13. fixing cylinder; 14. spring; 15. limit slide groove; 16. limit block; 17. small hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 5 The utility model provides a technical solution: a quick-change grinding and polishing belt wheel, including a support body 1, a fixing mechanism 2 and a sanding belt disc 5. A fixing mechanism 2 is provided on one side of the support body 1, and the fixing mechanism 2 plays a role in fixing the sanding belt disc 5. The fixing mechanism 2 includes a front cover plate 3 and a rear cover plate 4. The front cover plate 3 is tightly attached to the surface of the support body 1. The front cover plate 3 fixes the sanding end of the sanding belt disc 5 away from the center on the support body 1, so that the sanding belt disc 5 maintains concentricity with the support body 1 and is aligned with the support body 1. The end face close to the knife rod 10 is matched, and a gap is left between the front cover plate 3 and the support body 1 to facilitate the folding of the sanding belt sheet 6. A rear cover plate 4 is provided on the side of the front cover plate 3 away from the support body 1. The rear cover plate 4 plays a role in fixing the sanding belt disc 5 and is concentric with the support body 1 and matched with the end face of the support body 1 away from the knife rod 10. The sanding belt disc 5 is arranged in the middle of the front cover plate 3 and the rear cover plate 4. The sanding belt disc 5 is formed by bonding the sanding belt sheets 6 of an annular array to the thin sheet base 7 material, and is the main consumable of the sanding belt wheel.

[0022] The sanding belt disc 5 includes a sanding belt sheet 6 and a thin sheet base 7. The long sides of the sanding belt sheet 6 are overlapped front and back and evenly distributed around the thin sheet base 7. The sanding belt sheet 6 is a rectangular sanding belt sheet with certain geometric dimensions. The sanding belt sheet 6 and the thin sheet base 7 are connected by glue. The thin sheet base 7 is a carrier of the sanding belt sheet 6. The sanding belt sheet 6 protrudes from the edge of the thin sheet base 7. The material of the thin sheet base 7 includes but is not limited to rubber sheet, plastic sheet, cardboard or fiber sheet material.

[0023] Small holes 17 are arranged around the middle of the thin film base 7, and the small holes 17 play a limiting role. A fixing screw 8 is provided on one side of the rear cover plate 4, and the fixing screw 8 can fix the rear cover plate 4 to ensure that the rear cover plate 4 presses the abrasive belt wheel onto the support body 1. The end of the fixing screw 8 close to the rear cover plate 4 passes through the fixing mechanism 2, the small hole 17 and the support body 1 and is threadedly connected with a nut 9. The nut 9 cooperates with the fixing screw 8 to fix the front and rear covers and the abrasive belt disc 5 on the support body 1.

[0024] A center screw 10 is arranged at the center of one side of the support body 1 away from the fixing mechanism 2, and the center screw 10 fixes the grinding belt wheel on the cutter rod 11. The center screw 10 passes through the support body 1 away from the fixing mechanism 2 and is threadedly connected with the cutter rod 11. The cutter rod 11 is used to transmit the grinding power from the grinding motor spindle to the grinding belt piece 6. When the wear life of the grinding belt is over, the center screw 11 and the cutter rod 10 are disassembled, the fixing screw 8 and the nut 9 are separated, and the grinding belt disc 5 is taken out, so that the grinding belt disc 5 can be replaced, thereby avoiding the waste caused by replacing the entire grinding belt wheel.

[0025] The tool bar 11 includes a movable rod 12 and a fixed cylinder 13. The end of the movable rod 12 away from the center screw 10 is embedded in the fixed cylinder 13. The movable rod 12 can translate in the fixed cylinder 13. A spring 14 is arranged inside the fixed cylinder 13. The spring 14 is compressed and contracted. The end of the spring 14 away from the inner wall of the fixed cylinder 13 abuts against the movable rod 12. The spring 14 is compressed and contracted and rebounds, so that the grinding pressure of the grinding belt wheel on the workpiece is always elastic, and a relatively balanced grinding pressure is always maintained on the surface area to be ground, thereby improving In order to improve the grinding effect and avoid shortening or damaging the service life of the grinding belt wheel due to excessive pressure, a limiting groove 15 is arranged around the inner arm of the fixed cylinder 13, and the limiting groove 15 plays a limiting role. A limiting block 16 is arranged on the outer wall of the movable rod 12 close to the spring 14, and the limiting block 16 is embedded in the limiting groove 15. The limiting block 16 and the limiting groove 15 play a limiting role so that the movable rod 12 can rotate synchronously with the fixed cylinder 13, thereby transmitting the grinding power from the grinding motor spindle to the sanding belt 6.

[0026] Working principle: When using a quick-change grinding and polishing wheel, after the abrasive belt disc 5 and the support body 1 are ensured to be concentric through the circumferential holes, the front cover plate 3, the rear cover plate 4 and the support body 1 are pre-fixed by the fixing screws 8 and nuts 9. A gap is left between the front cover plate 3 and the support body 1 to facilitate the folding of the abrasive belt 6. The abrasive belt 6 is folded along the end surface of the support body 1 to the gap between the rear cover plate 4 and the support body 1. The abrasive belt 6 and the support body 1 remain relatively close. After all the abrasive belts 1 are folded, the fixing screws 8 and nuts 9 are tightened, and fixed to the tool bar 10 with the center screw 11. The tool bar 11 is used to transmit the grinding power from the grinding motor spindle to the sanding belt disc 6. During the grinding process, the spring 14 is compressed, shrinks and rebounds, so that the grinding pressure of the sanding belt wheel on the workpiece is always elastic, and a relatively balanced grinding pressure is always maintained on the ground surface area, thereby improving the grinding effect and avoiding excessive pressure that may shorten the service life of the sanding belt wheel or cause damage. When the wear life of the sanding belt is over, the center screw 11 and the cutter bar 10 are disassembled, the fixing screw 8 and the nut 9 are separated, and the sanding belt disc 5 is taken out, so that the sanding belt disc 5 can be replaced, avoiding the waste caused by replacing the entire sanding belt wheel.

Claims

1. A quick-changeable grinding and polishing belt wheel, comprising a support body (1), a fixing mechanism (2) and a grinding belt disc (5), characterized in that: A fixing mechanism (2) is provided on one side of the support body (1), and the fixing mechanism (2) comprises a front cover plate (3) and a rear cover plate (4), the front cover plate (3) is closely attached to the surface of the support body (1), and a rear cover plate (4) is provided on the side of the front cover plate (3) away from the support body (1), and the sanding belt disc (5) is arranged in the middle of the front cover plate (3) and the rear cover plate (4).

2. The quick-change grinding and polishing belt wheel according to claim 1, characterized in that: The sanding belt disc (5) comprises a sanding belt sheet (6) and a thin sheet base (7). The long sides of the sanding belt sheet (6) are evenly distributed around the thin sheet base (7) by overlapping each other front and back. The sanding belt sheet (6) and the thin sheet base (7) are connected by gluing. The material of the thin sheet base (7) includes but is not limited to a rubber sheet, a plastic sheet, a cardboard sheet or a fiber sheet material.

3. The quick-change grinding and polishing belt wheel according to claim 2, characterized in that: Small holes (17) are arranged around the middle of the thin sheet base (7), and a fixing screw (8) is provided on one side of the rear cover plate (4). The end of the fixing screw (8) close to the rear cover plate (4) passes through the fixing mechanism (2), the small hole (17) and the support body (1) and is threadedly connected to a nut (9).

4. The quick-change grinding and polishing belt wheel according to claim 1, characterized in that: A central screw (10) is provided at the center of one side of the support body (1) away from the fixing mechanism (2), and the central screw (10) passes through the support body (1) away from the fixing mechanism (2) and is threadedly connected to a knife rod (11).

5. The quick-change grinding and polishing belt wheel according to claim 4, characterized in that: The knife rod (11) comprises a movable rod (12) and a fixed tube (13); one end of the movable rod (12) away from the center screw (10) is embedded in the fixed tube (13); a spring (14) is arranged inside the fixed tube (13); one end of the spring (14) away from the inner wall of the fixed tube (13) is in contact with the movable rod (12).

6. The quick-change grinding and polishing belt wheel according to claim 5, characterized in that: A limiting sliding groove (15) is arranged around the inner arm of the fixed cylinder (13), and a limiting block (16) is arranged on the outer wall of one side of the movable rod (12) close to the spring (14), and the limiting block (16) is embedded in the limiting sliding groove (15).

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