Grinding wheel with abrasive paper convenient to replace

Abstract

The utility model discloses a grinding wheel with abrasive paper convenient to replace, and relates to the technical field of grinding wheels. The grinding wheel comprises a grinding wheel body, a rubber sleeve and a clamping groove, a pressing mechanism is arranged in the clamping groove, a first pressing plate is arranged on one side of a first movable plate, and a second pressing plate is arranged on one side of a second movable plate. When the abrasive paper needs to be replaced, a worker only needs to manually rotate and tighten the abrasive paper, push the two ends of the abrasive paper into the clamping grooves, enable the first pressing plate and the second pressing plate to press the two ends, located in the clamping grooves, of the abrasive paper, and finally push the first plug pin and the second plug pin into the corresponding limiting holes, so that the abrasive paper is fixed, the abrasive paper is replaced and used at any time in the replacement process, and waiting is not needed; and the replaced abrasive paper is always kept fixed under the assistance of the pressing mechanism, the fixing effect cannot be affected as time goes on, and the safety is higher compared with glue fixing.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheels, in particular to a grinding wheel convenient for replacing sandpaper. Background Technique

[0002] As a kind of abrasive tool, the grinding wheel is suitable for removing corners, burrs and rough edges, and repairing uneven surfaces. When in use, sandpaper is usually fixed on the outside of the grinding wheel, and the corresponding products are polished with the sandpaper. When the sandpaper shows a decline in polishing quality after multiple polishings, the sandpaper needs to be replaced.

[0003] When fixing sandpaper on the existing grinding wheel, glue is mostly used for fixing. And it can only be used after the glue is completely dry. To ensure the adhesion effect of the glue, a long time needs to be left for the glue to completely solidify. The process of replacing sandpaper is time-consuming. And at the joint of the sandpaper, due to bonding with glue, the adhesion effect of the glue may weaken with the extension of the service time, and then the joint is likely to burst open. Seriously, it may scratch the hands or face of the operator, posing a certain safety hazard. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a grinding wheel convenient for replacing sandpaper, so as to solve the technical problems that when replacing sandpaper on the existing grinding wheel, the method of adhesion with glue is time-consuming, inconvenient to replace, and the sandpaper fixed with glue is easy to burst open, posing a certain safety hazard.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A grinding wheel convenient for replacing sandpaper, including a grinding wheel main body, a rubber sleeve and a clamping groove. A pressing mechanism is arranged inside the clamping groove. The pressing mechanism includes a fixed seat. A first moving plate and a second moving plate are arranged inside the fixed seat. A first pressing plate is arranged on one side of the first moving plate. A first limiting hole is opened on the first moving plate. A second pressing plate is arranged on one side of the second moving plate. A second limiting hole is opened on the second moving plate. First pins and second pins are arranged on the top and bottom of the fixed seat respectively.

[0006] By adopting the above technical scheme, the setting of the rubber sleeve can increase the friction force between the grinding wheel main body and the back of the sandpaper to assist in fixing the sandpaper. The setting of the clamping groove and the pressing mechanism facilitates fixing both ends of the sandpaper in the clamping groove, and the process of replacing and fixing the sandpaper is simple and fast.

[0007] Further, the first pins and the second pins are consistent, and the first pins and the second pins are adapted to the first limiting hole and the second limiting hole.

[0008] By adopting the above technical solution, the first bolt and the second bolt can fix the first moving plate and the second moving plate after the first pressing plate and the second pressing plate fix the abrasive paper.

[0009] Further, the first bolt is arranged on the outer sides of the top and bottom of the fixed seat, the second bolt is arranged in the middle of the top and bottom of the fixed seat, and there are two groups of the first bolt and the second bolt, and the two groups of the first bolt and the second bolt are symmetrically distributed.

[0010] By adopting the above technical solution, the installation positions of the first bolt and the second bolt respectively correspond to the moving paths of the first moving plate and the second moving plate, and the first bolt and the second bolt are arranged on the top and bottom of the fixed seat at the same time, ensuring that good fixing effects can be achieved on both sides of the first moving plate and the second moving plate.

[0011] Further, both the first bolt and the second bolt are engaged and slidable with the fixed seat, and grooves are formed on the fixed seat and are consistent with the first limiting hole and the second limiting hole.

[0012] By adopting the above technical solution, the connection manner between the first bolt and the second bolt and the fixed seat determines that the process of the first bolt and the second bolt moving out of the corresponding limiting holes can proceed smoothly.

[0013] Further, the sides of the first pressing plate and the second pressing plate close to the clamping groove are wear-resistant surfaces.

[0014] By adopting the above technical solution, since the surface of the abrasive paper is relatively rough and the rough abrasive paper surface contacts the first pressing plate and the second pressing plate, the setting of the wear-resistant surface can protect the first pressing plate and the second pressing plate to a certain extent.

[0015] Further, the top view section and the front view section of the first moving plate are both in a "concave" structure, and the top view section and the front view section of the second moving plate are both in a "convex" structure.

[0016] By adopting the above technical solution, the special structures of the first moving plate and the second moving plate can enable the first moving plate and the second moving plate to be smoothly retracted into the fixed seat after the first pressing plate and the second pressing plate release the fixing effect on the abrasive paper.

[0017] Further, a scraping plate is arranged on the outer side of the fixed seat, and the scraping plate is in contact with the first moving plate and the second moving plate.

[0018] By adopting the above technical solution, the setting of the scraping plate can scrape off the debris that enters during the grinding process on the tops of the first moving plate and the second moving plate when they are retracted into the fixed seat.

[0019] Furthermore, a protective coating is applied to the outer side of the grinding wheel body, the outer surface of the fixing base, and the tops of the first moving plate and the second moving plate. The protective coating is made of nano material.

[0020] By adopting the above technical solution, the setting of the protective coating can provide appropriate protection for the grinding wheel body, the fixing base, the first moving plate and the second moving plate, and extend their service life.

[0021] Furthermore, handles are provided on both the first pressing plate and the second pressing plate. There are two groups of handles, and the two groups of handles are symmetrically arranged.

[0022] By adopting the above technical solution, the setting of the handles facilitates the worker to apply force to the first pressing plate and the second pressing plate when replacing the abrasive paper, and assists the process of the first moving plate and the second moving plate retracting or extending from the fixing base.

[0023] Furthermore, the handles are fixedly connected to both the first pressing plate and the second pressing plate. The first pressing plate is fixedly connected to the first moving plate, the second pressing plate is fixedly connected to the second moving plate, and both the first moving plate and the second moving plate are slidably connected to the fixing base.

[0024] By adopting the above technical solution, when pulling the handle, the first pressing plate and the second pressing plate fixedly connected thereto are driven to move, so that the first moving plate fixedly connected to the first pressing plate and the second moving plate fixedly connected to the second pressing plate are drawn out or retracted from the fixing base.

[0025] In summary, the present utility model mainly has the following beneficial effects:

[0026] 1. By setting the rubber sleeve, the card slot, the first pressing plate, the second pressing plate, the first bolt and the second bolt, when the abrasive paper needs to be replaced, the worker only needs to manually rotate and tighten the abrasive paper, push both ends of it into the card slot, then make the first pressing plate and the second pressing plate press both ends of the abrasive paper located in the card slot, and finally push the first bolt and the second bolt into the corresponding limiting holes to fix the abrasive paper. The replacement process can be used immediately without waiting, and the replaced abrasive paper is always fixed with the assistance of the pressing mechanism and will not affect the fixing effect over time. Compared with fixing with glue, it is also safer.

[0027] 2. The utility model is provided with a scraper, a protective coating and a handle. When the first moving plate and the second moving plate are retracted into the fixed seat, the scraper can scrape off the debris entering from the top of the two during the grinding process, preventing it from entering the fixed seat and affecting the movement of the first moving plate and the second moving plate. The protective coating adopts a nano - coating, which can not only play a protective role but also prevent the corresponding components from getting dirty. The debris generated during the grinding process can be easily removed. The setting of the handle facilitates applying force to pull the first moving plate and the second moving plate out of the fixed seat, thus ensuring that the first pressing plate and the second pressing plate can firmly press both ends of the abrasive paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three - dimensional structural schematic diagram of the present utility model;

[0029] Figure 2 is a partial sectional structural schematic diagram of the present utility model;

[0030] Figure 3 is a front - view sectional structural schematic diagram of the present utility model;

[0031] Figure 4 is the present utility model Figure 1 the enlarged structural schematic diagram of part A in;

[0032] Figure 5 is the present utility model Figure 2 the enlarged structural schematic diagram of part B in;

[0033] Figure 6 is the present utility model Figure 3 the enlarged structural schematic diagram of part C in.

[0034] In the figure: 1, grinding wheel main body; 2, rubber sleeve; 3, clamping groove; 4, pressing mechanism; 41, fixed seat; 42, first moving plate; 43, second moving plate; 44, first pressing plate; 45, second pressing plate; 46, first bolt; 47, second bolt; 48, first limiting hole; 49, second limiting hole; 5, scraper; 6, protective coating; 7, handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0036] Next, the embodiments of the present utility model will be described according to the overall structure of the present utility model.

[0037] Embodiment 1:

[0038] A grinding wheel facilitating sandpaper replacement, asFigures 1 - 6 As shown, it includes a grinding wheel body 1, a rubber sleeve 2 and a clamping groove 3. A pressing mechanism 4 is arranged inside the clamping groove 3. The pressing mechanism 4 includes a fixed seat 41. A first moving plate 42 and a second moving plate 43 are arranged inside the fixed seat 41. A first pressing plate 44 is arranged on one side of the first moving plate 42. A first limiting hole 48 is formed on the first moving plate 42. A second pressing plate 45 is arranged on one side of the second moving plate 43. A second limiting hole 49 is formed on the second moving plate 43. First pins 46 and second pins 47 are arranged at the top and bottom of the fixed seat 41. The setting of the rubber sleeve 2 can increase the friction between the grinding wheel body 1 and the back of the abrasive paper, assisting in fixing the abrasive paper. The setting of the clamping groove 3 and the pressing mechanism 4 facilitates fixing the two ends of the abrasive paper in the clamping groove 3. The process of replacing and fixing the abrasive paper is simple and fast. Compared with the form of glue adhesion, this method can be put into use immediately after the abrasive paper is fixed, without the need for workers to replace it in advance and wait for the glue to dry completely. And during the use process, there is no need to worry that the fixing effect will weaken with the extension of the use time, affecting the safety during the use of the abrasive paper, and preventing the situation that the abrasive paper may burst and hurt the workers.

[0039] Refer to Figure 2 、 Figure 5 , the first pins 46 and the second pins 47 are consistent, the first pins 46 and the second pins 47 are adapted to the first limiting hole 48 and the second limiting hole 49. The setting of the first pins 46 and the second pins 47 can fix the first moving plate 42 and the second moving plate 43 after the first pressing plate 44 and the second pressing plate 45 fix the abrasive paper, further ensuring that the first pressing plate 44 and the second pressing plate 45 remain in the position of pressing the abrasive paper. The high adaptability of the first pins 46, the second pins 47 to the first limiting hole 48 and the second limiting hole 49 makes the process of the pins moving into and out of the corresponding limiting holes smoother.

[0040] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5, the first pin 46 is arranged on the outer sides of the top and bottom of the fixed seat 41, the second pin 47 is arranged in the middle of the top and bottom of the fixed seat 41, and there are two sets of the first pin 46 and the second pin 47. The two sets of the first pin 46 and the second pin 47 are symmetrically distributed. The arranged positions of the first pin 46 and the second pin 47 respectively correspond to the moving paths of the first moving plate 42 and the second moving plate 43. Moreover, the first pin 46 and the second pin 47 are arranged at the top and bottom of the fixed seat 41 simultaneously, ensuring that good fixing effects can be achieved on both sides of the first moving plate 42 and the second moving plate 43. There are two sets of symmetric first pins 46 and second pins 47 at the top and bottom, enabling the first moving plate 42 and the second moving plate 43 to be fixed at two positions, namely the position where the auxiliary pressing plate presses the abrasive paper and the position where the restriction on the abrasive paper is released.

[0041] Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , both the first pin 46 and the second pin 47 are engaged and slidable with the fixed seat 41. Grooves are formed on the fixed seat 41, and the grooves are consistent with the first limiting hole 48 and the second limiting hole 49. The connection method of the first pin 46 and the second pin 47 with the fixed seat 41 determines that the process of the first pin 46 and the second pin 47 moving out of the corresponding limiting holes can proceed smoothly. The setting of the grooves can temporarily accommodate the first pin 46 and the second pin 47 that move out of the corresponding limiting holes, preventing the pins from affecting the process of the first moving plate 42 and the second moving plate 43 sliding along the fixed seat 41.

[0042] Refer to Figure 4 , Figure 6 , one side of the first pressing plate 44 and the second pressing plate 45 close to the clamping groove 3 is an anti-friction surface. Since the surface of the abrasive paper is relatively rough and the rough abrasive paper surface contacts the first pressing plate 44 and the second pressing plate 45, in order to prevent the rough surface of the abrasive paper from damaging the first pressing plate 44 and the second pressing plate 45, it is necessary to use the anti-friction surface to protect the first pressing plate 44 and the second pressing plate 45.

[0043] Refer to Figure 3 , Figure 6, the top view cross-section and the front view cross-section of the first moving plate 42 are both in a "concave" structure, and the top view cross-section and the front view cross-section of the second moving plate 43 are both in a "convex" structure. The special structure settings of the first moving plate 42 and the second moving plate 43 enable the first pressing plate 44 and the second pressing plate 45 to release the fixation of the abrasive paper, and then both the first moving plate 42 and the second moving plate 43 can be smoothly retracted into the fixed seat 41. The "concave" structure of the first moving plate 42 and the "convex" structure of the second moving plate 43 are perfectly abutted in the fixed seat 41, which can not only ensure the smooth operation of the pressing mechanism 4, but also make the area occupied by the fixed seat 41 smaller, contributing to space saving.

[0044] Embodiment 2:

[0045] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 , a scraper 5 is arranged on the outer side of the fixed seat 41, and the scraper 5 abuts against the first moving plate 42 and the second moving plate 43. During the grinding process, fine debris will be generated, and these debris may enter the card slot 3 and scatter on the first moving plate 42 and the second moving plate 43 that extend out of the fixed seat 41. To prevent these debris from entering the fixed seat 41 during the process of the first moving plate 42 and the second moving plate 43 retracting into the fixed seat 41 and affecting the sliding between the first moving plate 42 and the second moving plate 43 and the fixed seat 41, it is necessary to use the scraper 5 to intercept the corresponding impurity debris outside the fixed seat 41.

[0046] Refer to Figure 4 、 Figure 5 、 Figure 6 , a protective coating 6 is coated on the outer side of the grinding wheel body 1, the outer surface of the fixed seat 41, and the tops of the first moving plate 42 and the second moving plate 43. The protective coating 6 is made of nano material. The setting of the protective coating 6 can give appropriate protection to the grinding wheel body 1, the fixed seat 41, the first moving plate 42 and the second moving plate 43, and extend their service life. The protective coating 6 adopts a nano coating, which not only makes the protective coating 6 have good wear resistance, but also is not easy to hide dirt. This makes the impurity debris entering the card slot 3 during the grinding process not easy to adhere to the grinding wheel body 1, the fixed seat 41, the first moving plate 42 and the second moving plate 43, facilitating cleaning.

[0047] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5, handles 7 are provided on both the first pressing plate 44 and the second pressing plate 45. There are two sets of handles 7, and the two sets of handles 7 are symmetrically arranged. The arrangement of the handles 7 facilitates the worker to apply force to the first pressing plate 44 and the second pressing plate 45 when replacing the abrasive paper, and assist the process of the first moving plate 42 and the second moving plate 43 retracting or extending from the fixed seat 41. The tops and bottoms of the first pressing plate 44 and the second pressing plate 45 are symmetrically provided with handles 7, and force can be applied on both sides of the handles 7, making the moving process of the first moving plate 42 and the second moving plate 43, as well as the first pressing plate 44 and the second pressing plate 45 respectively fixed to them, more stable.

[0048] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the handles 7 are fixedly connected to both the first pressing plate 44 and the second pressing plate 45. The first pressing plate 44 is fixedly connected to the first moving plate 42, and the second pressing plate 45 is fixedly connected to the second moving plate 43. Both the first moving plate 42 and the second moving plate 43 are slidably connected to the fixed seat 41. When pulling the handle 7, it drives the first pressing plate 44 and the second pressing plate 45 fixedly connected to it to move, and then makes the first moving plate 42 fixedly connected to the first pressing plate 44 and the second moving plate 43 fixedly connected to the second pressing plate 45 be drawn out or retracted from the fixed seat 41, so as to fix the abrasive paper by using the first pressing plate 44 and the second pressing plate 45 to ensure its normal use, or release the limiting effect of the first pressing plate 44 and the second pressing plate 45 on the abrasive paper to facilitate the replacement of the abrasive paper.

[0049] The implementation principle of the present utility model is as follows: First, when the abrasive paper needs to be replaced, one end of the abrasive paper is clamped into the slot 3 on one side of the first pressing plate 44 using a flat tool. The first pin 46 on the right is pulled up to the limit, and the handles 7 at the top and bottom of the first pressing plate 44 are pulled to move the first moving plate 42 driven by the first pressing plate 44 continuously out of the fixed seat 41 until the end of the abrasive paper clamped into the slot 3 is tightened. At this time, the first limiting hole 48 just moves to the corresponding groove of the first pin 46 near the left side of the fixed seat 41. Then, the first pin 46 on the left is pushed down so that it extends out of the corresponding groove and enters the first limiting hole 48 to complete the fixation of one end of the abrasive paper. Secondly, after the abrasive paper is rotated and tightened along the rubber sleeve 2, the other end is clamped into the slot 3 on one side of the second pressing plate 45 using a flat tool. The second pin 47 on the left is pulled up to the limit, and the handles 7 at the top and bottom of the second pressing plate 45 are pulled to move the second moving plate 43 driven by the second pressing plate 45 continuously out of the fixed seat 41 until the abrasive paper is tightened. At this time, the second limiting hole 49 just moves to the corresponding groove of the second pin 47 near the right side of the fixed seat 41. Then, the second pin 47 on the right is pushed down so that it extends out of the corresponding groove and enters the second limiting hole 49 to complete the fixation of the abrasive paper with the grinding wheel body 1 and the rubber sleeve 2. Finally, when replacement is needed, only the first pin 46 on the left needs to be pulled out of the first limiting hole 48, and at the same time, the second pin 47 on the right is pulled out to the limit from the second limiting hole 49. The handles 7 at the top and bottom of the first pressing plate 44 and the second pressing plate 45 are pushed. When the first moving plate 42 and the second moving plate 43 slide inward to the fixed seat 41, the scraper 5 scrapes off the debris on their tops. When the first pressing plate 44 and the second pressing plate 45 release the pressing effect on the abrasive paper, the abrasive paper can be removed, and the slot 3 can be gently blown with a tool to blow off the debris generated during the grinding process, so that the slot 3 and the pressing mechanism 4 inside it are kept clean. Then, the installation process of the abrasive paper can be repeated continuously.

[0050] Parts not involved in the present utility model are the same as or can be implemented using the prior art, and will not be elaborated here.

[0051] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model, and they are not limitations of the utility model. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can, without departing from the principles and purposes of the present utility model, make modifications, substitutions and variations that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A grinding wheel that is easy to replace sandpaper, characterized in that: The invention comprises a grinding wheel body (1), a rubber sleeve (2) and a clamping groove (3); a clamping mechanism (4) is arranged inside the clamping groove (3); the clamping mechanism (4) comprises a fixed seat (41); a first movable plate (42) and a second movable plate (43) are arranged inside the fixed seat (41); a first pressing plate (44) is arranged on one side of the first movable plate (42); a first limiting hole (48) is provided on the first movable plate (42); a second pressing plate (45) is arranged on one side of the second movable plate (43); a second limiting hole (49) is provided on the second movable plate (43); and a first plug pin (46) and a second plug pin (47) are arranged on the top and bottom of the fixed seat (41).

2. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The first plug pin (46) and the second plug pin (47) are consistent with each other, and the first plug pin (46) and the second plug pin (47) are matched with the first limiting hole (48) and the second limiting hole (49).

3. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The first plug pins (46) are arranged on the outer sides of the top and bottom of the fixing seat (41), and the second plug pins (47) are arranged in the middle of the top and bottom of the fixing seat (41). The first plug pins (46) and the second plug pins (47) are each provided with two groups, and the two groups of the first plug pins (46) and the second plug pins (47) are symmetrically distributed.

4. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The first plug pin (46) and the second plug pin (47) are both engaged and slidably moved with the fixing seat (41); a groove is provided on the fixing seat (41), and the groove is consistent with the first limiting hole (48) and the second limiting hole (49).

5. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The side of the first pressing plate (44) and the second pressing plate (45) close to the card slot (3) is a friction-resistant surface.

6. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The top view cross section and the front view cross section of the first movable plate (42) both present a "concave" structure, and the top view cross section and the front view cross section of the second movable plate (43) both present a "convex" structure.

7. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: A scraper (5) is provided on the outer side of the fixed seat (41), and the scraper (5) is in contact with the first movable plate (42) and the second movable plate (43).

8. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The outer side of the grinding wheel body (1), the outer surface of the fixed seat (41), and the tops of the first movable plate (42) and the second movable plate (43) are all coated with a protective coating (6), and the protective coating (6) is made of nano material.

9. The grinding wheel for easy replacement of sandpaper according to claim 1, characterized in that: The first pressing plate (44) and the second pressing plate (45) are both provided with handles (7), and the handles (7) are provided in two groups, and the two groups of handles (7) are symmetrically arranged.

10. The grinding wheel for easy replacement of sandpaper according to claim 9, characterized in that: The handle (7) is fixedly connected to the first pressing plate (44) and the second pressing plate (45); the first pressing plate (44) is fixedly connected to the first movable plate (42); the second pressing plate (45) is fixedly connected to the second movable plate (43); and the first movable plate (42) and the second movable plate (43) are both slidably connected to the fixed seat (41).

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