Sponge grinding block with soft and hard properties

Abstract

This utility model discloses a sponge abrasive block that can be used for both hard and soft abrasives, relating to the field of sponge abrasive block technology. It includes a connecting frame and a rotating shaft. The connecting frame has rotating shafts rotatably connected to both sides, and a connecting plate is fixed between the rotating shafts. During use, rotating the adjusting screw moves the moving block and the fixing pin, thus releasing the connection with the fixing hole and unlocking the connecting plate. This allows for the interchange of high-hardness sponge and soft / hard sponge by flipping the connecting plate. By combining sponge layers of different densities, it is suitable for various materials such as metal, wood, plastic, and paint. It enables rapid removal of imperfections on the hard layer and efficient polishing with the soft layer, improving its practicality and flexibility. Furthermore, the first, second, third, and fourth hook and loop fasteners allow for the replacement of sandpaper, making operation simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of sponge grinding block technology, and in particular to a sponge grinding block that can be used for both soft and hard applications. Background Technology

[0002] As a new type of polishing material, cotton abrasive blocks are widely used in parts polishing and decoration.

[0003] Chinese Patent Publication No. CN 105729322 A discloses a planar sponge abrasive block tool. The lower end face of the sponge core is covered with a frosted layer; a handplate is provided on the upper end face of the sponge core. A barb is provided on the end face of the handplate that contacts the sponge core. A circular hole for fingers to pass through is provided on the surface of the handplate perpendicular to the upper end face of the sponge core. The horizontal cross-section of the core is circular, rectangular, triangular, or "n"-shaped. The frosted layer is bonded to the sponge core. The handplate and the sponge core are connected by barbs or adhesive. Different shapes of sponge abrasive blocks can be manufactured according to different requirements and needs. The structure of the sponge abrasive block plus the handplate allows for the manufacture of sponge abrasive blocks of different shapes according to different requirements and needs. The handplate prevents hand discomfort caused by prolonged contact with the frosted layer, and the circular hole on the handplate makes it easier to grip, making the operation of the abrasive block more convenient.

[0004] The existing technical solutions mentioned above have the following shortcomings: the technical solutions use a single-density sponge material during use, which is only suitable for specific grinding needs. It is inconvenient to switch between coarse grinding and polishing, and there is room for optimization. Therefore, it is necessary to design a sponge grinding block that can be used for both soft and hard materials to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a sponge grinding block that can be used for both soft and hard materials, so as to solve the problem of low applicability mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sponge grinding block that can be used for both soft and hard applications, including a connecting frame and a rotating shaft, wherein the rotating shaft is rotatably connected to both sides inside the connecting frame;

[0007] A connecting plate is fixed between the rotating shafts, and high-hardness sponge and soft-hard sponge are respectively connected to both sides of the connecting plate. Sandpaper is attached to the outer side of both the high-hardness sponge and the soft-hard sponge. Fixing holes are provided at both ends of one side of the connecting plate. A fixing box is fixed to one side of the connecting frame, and a threaded groove is provided on one side of the fixing box. An adjusting screw is threaded into the inside of the threaded groove. A moving block is movably connected inside the fixing box, and the moving block is connected to the adjusting screw. A fixing pin is fixed to the inner side of the moving block, and the fixing pin is connected to the fixing hole.

[0008] Furthermore, the inner side of the sandpaper is provided with a third hook and loop fastener, and the outer side of the high-hardness sponge and the soft-hard sponge are provided with a first hook and loop fastener, and the first hook and loop fasteners are connected to the third hook and loop fasteners.

[0009] Furthermore, a second hook and loop fastener is provided on both the high-hardness sponge and the soft-hard sponge on the inner side of the first hook and loop fastener, and a fourth hook and loop fastener is provided on the sandpaper on the inner side of the third hook and loop fastener, and the fourth hook and loop fastener is connected to the second hook and loop fastener.

[0010] Furthermore, the second and first hook and loop fasteners are both hook-on, while the third and fourth hook and loop fasteners are both loop-on.

[0011] Furthermore, a handle is fixed to the top of the connecting frame, and an extension handle is connected to the top of the handle, with a handle head connected to the top of the extension handle.

[0012] Furthermore, both the bottom end of the handle and the extension handle are fixed with threaded heads, and the top end of both the extension handle and the handle are provided with connecting threads, which are threadedly connected to the threaded heads.

[0013] Furthermore, both the extension handle and the handle are fitted with anti-slip sleeves on their outer sides, and the anti-slip sleeves are made of rubber.

[0014] Compared with the prior art, the beneficial effect of this utility model is that the soft and hard sponge abrasive block realizes a dual-use function;

[0015] By rotating the adjusting screw during use, the moving block and fixing pin are moved to disengage from the fixing hole, thus unlocking the connecting plate. The flipping of the connecting plate allows for the interchange of high-hardness and soft-hard sponges. By combining sponge layers of different densities, it is suitable for various materials such as metal, wood, plastic, and paint. It enables rapid removal of imperfections with the hard layer and efficient polishing with the soft layer, improving its practicality and flexibility. Furthermore, the first, second, third, and fourth hook and loop fasteners allow for the replacement of sandpaper, making operation simple and convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the sandpaper connection of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the fixing box of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the handle of this utility model.

[0021] The reference numerals in the diagram are as follows: 1. Handle head; 2. Handle; 3. Connecting bracket; 4. Sandpaper; 5. High-hardness sponge; 6. Connecting plate; 7. Soft and hard sponge; 8. Fixing hole; 9. Rotating shaft; 10. Fixing box; 11. Adjusting screw; 12. Fixing pin; 13. First Velcro; 14. Second Velcro; 15. Third Velcro; 16. Fourth Velcro; 17. Threaded groove; 18. Moving block; 19. Threaded head; 20. Connecting thread; 21. Extension handle; 22. Anti-slip sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figures 1-4 The present invention provides the following technical solution:

[0024] Example 1: To address the problem of inconvenience in adjustment and use in the prior art, the following solution is disclosed, specifically as follows: Figure 1 , Figure 2 and Figure 3As shown, the dual-purpose (hard and soft) sponge abrasive block provided in this application includes a connecting frame 3 and a rotating shaft 9. The connecting frame 3 has rotating shafts 9 rotatably connected to both sides. A connecting plate 6 is fixed between the rotating shafts 9, and high-hardness sponge 5 and soft-hardness sponge 7 are respectively connected to both sides of the connecting plate 6. Sandpaper 4 is connected to the outer sides of both the high-hardness sponge 5 and the soft-hardness sponge 7. A third hook and loop fastener 15 is provided on the inner side of each sandpaper 4. A first hook and loop fastener 13 is provided on the outer sides of both the high-hardness sponge 5 and the soft-hardness sponge 7, and the first hook and loop fastener 13 is connected to the third hook and loop fastener 15. A second hook and loop fastener 14 is provided on the high-hardness sponge 5 and the soft-hardness sponge 7 inside the first hook and loop fastener 13. Each of the sandpaper 4 on the inner side of 15 is provided with a fourth hook and loop fastener 16, and the fourth hook and loop fastener 16 is connected to the second hook and loop fastener 14. The second hook and loop fastener 14 and the first hook and loop fastener 13 are hook surfaces, and the third hook and loop fastener 15 and the fourth hook and loop fastener 16 are rough surfaces. Both ends of one side of the connecting plate 6 are provided with fixing holes 8. One side of the connecting bracket 3 is fixed with a fixing box 10, and one side of the fixing box 10 is provided with a threaded groove 17. The threaded groove 17 is threadedly connected to an adjusting screw 11. The fixing box 10 is movably connected with a moving block 18, and the moving block 18 is connected to the adjusting screw 11. The inner side of the moving block 18 is fixed with a fixing pin 12, and the fixing pin 12 is connected to the fixing hole 8.

[0025] In this embodiment, during use, rotating the adjusting screw 11 moves the moving block 18 and the fixing pin 12 to disconnect from the fixing hole 8, thereby unlocking the connecting plate 6. The high-hardness sponge 5 and the soft-hard sponge 7 can be interchanged by flipping the connecting plate 6. By combining sponge layers of different densities, it is suitable for various materials such as metal, wood, plastic, and paint. It enables efficient sanding with rapid removal of imperfections on the hard layer and fine polishing on the soft layer, improving its practicality and flexibility. Furthermore, the sandpaper 4 can be replaced via the first hook and loop fastener 13, the second hook and loop fastener 14, the third hook and loop fastener 15, and the fourth hook and loop fastener 16. The operation is simple and convenient.

[0026] Example 2 differs from Example 1 in that it adjusts the height to meet different usage requirements, specifically as follows: Figure 1 and Figure 4 As shown, a handle 2 is fixed to the top of the connecting frame 3, and an extension handle 21 is connected to the top of the handle 2. A handle head 1 is connected to the top of the extension handle 21. A threaded head 19 is fixed to the bottom of both the handle head 1 and the extension handle 21. A connecting thread 20 is provided at the top of both the extension handle 21 and the handle 2, and the connecting thread 20 is threadedly connected to the threaded head 19. An anti-slip sleeve 22 is fitted on the outer side of both the extension handle 21 and the handle 2, and the anti-slip sleeve 22 is made of rubber.

[0027] In this embodiment, when in use, it is provided with an extension handle 21, which can adjust the number of connections, i.e. the grip length, according to the user's gripping needs. Through the threaded head 19 and the connecting thread 20, it can facilitate quick assembly between the handle head 1, the extension handle 21 and the handle 2, improving the ease of operation.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sponge grinding block that can be used for both soft and hard applications, comprising a connecting frame (3) and a rotating shaft (9), wherein the connecting frame (3) has rotating shafts (9) rotatably connected to both sides inside. Its features are: A connecting plate (6) is fixed between the rotating shafts (9), and a high-hardness sponge (5) and a soft-hardness sponge (7) are respectively connected to both sides of the connecting plate (6). Sandpaper (4) is connected to the outer side of both the high-hardness sponge (5) and the soft-hardness sponge (7). Fixing holes (8) are provided at both ends of one side of the connecting plate (6). A fixing box (10) is fixed to one side of the connecting frame (3), and a threaded groove (17) is provided on one side of the fixing box (10). An adjusting screw (11) is threaded inside the threaded groove (17). A moving block (18) is movably connected inside the fixing box (10), and the moving block (18) is connected to the adjusting screw (11). A fixing pin (12) is fixed to the inner side of the moving block (18), and the fixing pin (12) is connected to the fixing hole (8).

2. The sponge grinding block that can be used for both soft and hard applications according to claim 1, characterized in that: The inner side of the sandpaper (4) is provided with a third hook and loop fastener (15), and the outer side of the high-hardness sponge (5) and the soft-hard sponge (7) is provided with a first hook and loop fastener (13), and the first hook and loop fastener (13) is connected to the third hook and loop fastener (15).

3. The sponge grinding block that can be used for both soft and hard applications according to claim 2, characterized in that: The first Velcro (13) has a second Velcro (14) on both the high-hardness sponge (5) and the soft-hard sponge (7) inside. The third Velcro (15) has a fourth Velcro (16) on both the sandpaper (4) inside. The fourth Velcro (16) is connected to the second Velcro (14).

4. The sponge grinding block that can be used for both soft and hard applications according to claim 3, characterized in that: The second hook and loop fastener (14) and the first hook and loop fastener (13) are both hook-side, and the third hook and loop fastener (15) and the fourth hook and loop fastener (16) are both rough-side.

5. The sponge grinding block that can be used for both soft and hard applications according to claim 1, characterized in that: The top of the connecting frame (3) is fixed with a handle (2), and the top of the handle (2) is connected with an extension handle (21), and the top of the extension handle (21) is connected with a handle head (1).

6. The sponge grinding block that can be used for both soft and hard applications according to claim 5, characterized in that: The bottom ends of the handle (1) and the extension handle (21) are both fixed with threaded heads (19), and the top ends of the extension handle (21) and the handle (2) are both provided with connecting threads (20), and the connecting threads (20) are threadedly connected to the threaded heads (19).

7. The sponge grinding block that can be used for both soft and hard applications according to claim 5, characterized in that: The extension handle (21) and the handle (2) are both covered with anti-slip sleeves (22), and the anti-slip sleeves (22) are made of rubber.

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