Automatic sandpaper changing mechanism of sandpaper polishing machine

Abstract

The utility model discloses sandpaper polisher automatic sandpaper changing mechanism, including base, the one side of base top is equipped with the piece frame, the other side fixedly covered with side support base of base top, is equipped with the bearing plate on the inner wall of side support base upper end, the one side of bearing plate top is installed with first lifting cylinder, the top of first lifting cylinder is installed with the base plate, the top fixed mounting of base plate has the rail block, the top of rail block is connected with the guide rail of sliding, the one side fixed mounting of guide rail top has the reinforcing strip, the other side fixed mounting of guide rail top has the abutment block, the top of base plate of rail block one side installs L type frame body, the inside of L type frame body is equipped with the piston cylinder, the inside of piston cylinder is connected with piston rod through the spring swing, the utility model discloses not only improved sandpaper changing mechanism's removal effect to sandpaper when using, also reached the purpose of easy sandpaper automatic removal, and ensured the sandpaper of upper connecting plate top installation and moved up precision.

Description

Technical Field

[0001] This utility model relates to the field of industrial grinding equipment technology, specifically to an automatic sandpaper changing mechanism for a sandpaper grinder. Background Technology

[0002] In the industrial manufacturing field, sanding is a key process for improving the surface quality of workpieces and is widely used in industries such as automotive parts, 3C electronic products, metal processing, and woodworking. As a result, corresponding sanding machines have been developed. In order to transfer sandpaper to the sanding machine platform for subsequent replacement operations, it is of great practical significance to develop an automatic sandpaper changing mechanism for sanding machines.

[0003] According to CN211945529U, an automatic sandpaper changing mechanism for a sandpaper grinder includes a synchronous belt lifting mechanism, a servo motor, a top rod, a sandpaper loading cylinder, sandpaper, and a photoelectric sensor. This sandpaper changing mechanism is structurally sound. During operation, before loading sandpaper, the servo motor drives the synchronous belt lifting mechanism to lower the top rod to its lowest position. After the sandpaper loading cylinder is filled with a stack of sandpaper, the top rod moves upward until the photoelectric sensor detects the sandpaper, at which point the servo motor stops. When the robotic arm automatically removes a piece of sandpaper, the servo motor starts, driving the lifting mechanism, and the top rod moves all the sandpaper in the cylinder. The sandpaper is pushed upwards until the photoelectric sensor detects it, ensuring its presence. Once used, it is removed, and the process continues until a roll of sandpaper is empty. This device can work in conjunction with a grinding robot to automatically replace the sandpaper. It only requires one refill and can operate continuously until all the sandpaper is used. The equipment is highly automated, reducing manual labor intensity and production costs, and improving production efficiency. However, as can be seen from the above, while this mechanism can be effectively applied, it is generally not convenient to limit the movement of the conveying components, making it difficult to accurately transfer the sandpaper to the grinding machine platform for subsequent replacement operations. Further improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic sandpaper changing mechanism for a sandpaper grinder, in order to solve the problem that although the mechanism proposed in the background art can be applied well, it is usually not convenient to limit the movement range of the transfer component, making it difficult to accurately transfer the sandpaper to the grinder platform for subsequent replacement operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic sandpaper changing mechanism for a sandpaper grinder, comprising a base, a component frame on one side of the top of the base, a side support fixed on the other side of the top of the base, a bearing plate on the inner wall of the upper end of the side support, a first lifting cylinder mounted on one side of the top of the bearing plate, a base plate mounted on the top of the first lifting cylinder, a rail block fixedly mounted on the top of the base plate, a guide rail slidably connected to the top of the rail block, a reinforcing strip fixedly mounted on one side of the top of the guide rail, an abutment block fixedly mounted on the other side of the top of the guide rail, an L-shaped frame mounted on the top of the base plate on one side of the rail block, a piston cylinder inside the L-shaped frame, a piston rod movably connected inside the piston cylinder by a spring, and a touch sensor mounted on one end of the piston rod extending to the outside of the piston cylinder.

[0006] Preferably, a push plate is fixedly installed on the outer wall of one side of the reinforcing strip, and the inner wall of the lower end of the push plate is connected to the outer wall of the guide rail. The push plate is used to push and move the sandpaper onto the grinding machine platform.

[0007] Preferably, an electric push rod is mounted on the top of the base plate on the side of the rail block away from the L-shaped frame via a bracket. One end of the electric push rod is connected to the inner wall of the push plate, and the electric push rod is used to drive the push plate to move horizontally.

[0008] Preferably, a lower connecting plate is fixedly installed inside the placement frame, and an upper connecting plate is provided inside the placement frame above the lower connecting plate. The upper connecting plate is used to stack and place sandpaper.

[0009] Preferably, a second lifting cylinder is installed at the center of the bottom end of the lower connecting plate. The top end of the second lifting cylinder passes through the lower connecting plate and is connected to the bottom end of the upper connecting plate. The upper connecting plate is driven to move up and down by the second lifting cylinder.

[0010] Preferably, guide cylinders are provided on both sides of the lower connecting plate, and guide rods are movably connected inside the guide cylinders. Both ends of the guide rods extend to the outside of the guide cylinders, and the top end of the guide rods is connected to the bottom end of the upper connecting plate. When the upper connecting plate is raised or lowered, the guide rods slide up and down inside the guide cylinders to limit the raising and lowering range of the upper connecting plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the automatic sandpaper changing mechanism of the sandpaper grinding machine not only improves the sandpaper transfer effect when the sandpaper changing mechanism is used, but also achieves the purpose of easy automatic transfer of sandpaper, and ensures the upward movement accuracy of the sandpaper placed at the top of the upper connecting plate.

[0012] (1) During the movement of the push plate, the guide rail slides on the top of the rail block, causing the guide rail to move the abutment block to the left. When the abutment block contacts the touch sensor, the grinding machine control terminal will immediately shut off the electric push rod to stop the push plate from moving to the left. At the same time, one end of the piston rod moves slightly to the left inside the piston cylinder, and the spring inside the piston cylinder contracts slightly to buffer and protect the touch sensor. This achieves the purpose of limiting the leftward movement of the push plate, so as to accurately push and transfer the sandpaper to the grinding machine platform for subsequent replacement work, thereby improving the sandpaper transfer effect when the sandpaper changing mechanism is used.

[0013] (2) By setting the first lifting cylinder, the height of the push plate can be adjusted as needed. The sandpaper is stacked and placed on the top of the upper connecting plate. The second lifting cylinder is started to drive the upper connecting plate to move slightly upward, so as to move the top layer of sandpaper to the outside of the placement frame. Then the electric push rod is started to drive the push plate to move to the left. Since the whole mechanism is located on the right side of the grinding machine platform, the push plate pushes the top layer of sandpaper to the grinding machine platform, thereby achieving the purpose of easy automatic transfer of sandpaper.

[0014] (3) When the upper connecting plate is raised and lowered, the guide rod moves up and down inside the guide cylinder to limit the lifting range of the upper connecting plate, which can effectively reduce the phenomenon of deviation when the upper connecting plate is raised and lowered, thereby ensuring the upward movement accuracy of the sandpaper placed at the top of the upper connecting plate. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the present invention;

[0016] Figure 2 This is a side view of the lower connecting plate structure of this utility model;

[0017] Figure 3 This is a top view of the guide rail structure of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base; 2. Side support; 3. Bearing plate; 4. First lifting cylinder; 5. Base plate; 6. Electric push rod; 7. Push plate; 8. Component frame; 9. Lower connecting plate; 10. Second lifting cylinder; 11. Upper connecting plate; 12. Guide cylinder; 13. Guide rod; 14. Reinforcing strip; 15. Guide rail; 16. Abutment block; 17. Rail block; 18. L-shaped frame; 19. Piston cylinder; 20. Piston rod; 21. Touch sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figure 1-4 An embodiment of this utility model provides an automatic sandpaper changing mechanism for a sandpaper grinder, including a base 1, a component frame 8 on one side of the top of the base 1, a lower connecting plate 9 fixedly installed inside the component frame 8, and an upper connecting plate 11 inside the component frame 8 above the lower connecting plate 9.

[0022] When in use, the sandpaper is stacked and arranged by the upper connecting plate 11;

[0023] A second lifting cylinder 10 is installed at the center of the bottom end of the lower connecting plate 9. The top of the second lifting cylinder 10 passes through the lower connecting plate 9 and is connected to the bottom end of the upper connecting plate 11.

[0024] In use, the second lifting cylinder 10 is used to drive the upper connecting plate 11 to move up and down.

[0025] Guide cylinders 12 are provided on both sides inside the lower connecting plate 9. Guide rods 13 are movably connected inside the guide cylinders 12. Both ends of the guide rods 13 extend to the outside of the guide cylinders 12. The top end of the guide rods 13 is connected to the bottom end of the upper connecting plate 11.

[0026] In use, when the upper connecting plate 11 is raised or lowered, it drives the guide rod 13 to slide up and down inside the guide cylinder 12, so as to limit the raising and lowering range of the upper connecting plate 11.

[0027] A side support 2 is fixed on the other side of the top of the base 1. A bearing plate 3 is provided on the inner wall of the upper end of the side support 2. A first lifting cylinder 4 is installed on one side of the top of the bearing plate 3. A base plate 5 is installed on the top of the first lifting cylinder 4. A rail block 17 is fixedly installed on the top of the base plate 5. A guide rail 15 is slidably connected to the top of the rail block 17. A reinforcing strip 14 is fixedly installed on one side of the top of the guide rail 15. A push plate 7 is fixedly installed on the outer wall of one side of the reinforcing strip 14. The inner wall of the lower end of the push plate 7 is connected to the outer wall of the guide rail 15.

[0028] When in use, the push plate 7 is set to push and move the sandpaper onto the sander platform;

[0029] An electric push rod 6 is mounted on the top of the base plate 5 on the side of the track block 17 away from the L-shaped frame 18 via a bracket. One end of the electric push rod 6 is connected to the inner wall of the push plate 7.

[0030] In use, the electric push rod 6 is set to drive the push plate 7 to move horizontally;

[0031] A stop block 16 is fixedly installed on the other side of the top of the guide rail 15. An L-shaped frame 18 is installed on the top of the base plate 5 on one side of the rail block 17. A piston cylinder 19 is provided inside the L-shaped frame 18. A piston rod 20 is movably connected inside the piston cylinder 19 by a spring. One end of the piston rod 20 extends to the outside of the piston cylinder 19 and is equipped with a touch sensor 21.

[0032] In this embodiment, during use, the push plate 7 first moves, causing the guide rail 15 to slide on top of the rail block 17, which in turn causes the guide rail 15 to move the abutment block 16 to the left. When the abutment block 16 contacts the touch sensor 21, the grinder control terminal immediately shuts off the electric push rod 6 to stop the push plate 7 from moving to the left. At the same time, one end of the piston rod 20 moves slightly to the left inside the piston cylinder 19, and the spring inside the piston cylinder 19 contracts slightly to buffer and protect the touch sensor 21. This achieves the purpose of limiting the leftward movement of the push plate 7, so as to accurately push and transfer the sandpaper to the grinder platform for subsequent replacement. Then, the upper connecting plate 11 moves up and down, driving the guide rod 1... 3. The upper plate 11 slides up and down inside the guide cylinder 12 to limit the lifting range of the upper plate 11, which can effectively reduce the deviation of the upper plate 11 during lifting and lowering, and ensure the upward movement accuracy of the sandpaper placed at the top of the upper plate 11. Finally, the height of the push plate 7 is adjusted as needed by the setting of the first lifting cylinder 4, and the sandpaper is stacked on the top of the upper plate 11. The second lifting cylinder 10 is started to drive the upper plate 11 to move slightly upward, so as to move the uppermost sandpaper to the outside of the placement frame 8. Then, the electric push rod 6 is started to drive the push plate 7 to move to the left. Since the whole mechanism is located on the right side of the grinding machine platform, the push plate 7 pushes the uppermost sandpaper to the grinding machine platform, thus completing the use of the sandpaper changing mechanism.

Claims

1. An automatic sandpaper changing mechanism for a sandpaper grinder, characterized in that: Includes a base (1), with a mounting frame (8) on one side of the top of the base (1), and a side support (2) fixed on the other side of the top of the base (1). A bearing plate (3) is provided on the inner wall of the upper end of the side support (2). A first lifting cylinder (4) is installed on one side of the top of the bearing plate (3). A base plate (5) is installed on the top of the first lifting cylinder (4). A rail block (17) is fixedly installed on the top of the base plate (5). A guide rail (15) is slidably connected to the top of the rail block (17). A reinforcing strip (14) is fixedly installed on one side of the top of the guide rail (15), and an abutment block (16) is fixedly installed on the other side of the top of the guide rail (15). An L-shaped frame (18) is installed on the top of the base plate (5) on one side of the rail block (17). A piston cylinder (19) is provided inside the L-shaped frame (18). A piston rod (20) is movably connected inside the piston cylinder (19) by a spring. One end of the piston rod (20) extends to the outside of the piston cylinder (19) and is equipped with a touch sensor (21).

2. The automatic sandpaper changing mechanism for a sandpaper grinder according to claim 1, characterized in that: A push plate (7) is fixedly installed on the outer wall of one side of the reinforcing strip (14), and the inner wall of the lower end of the push plate (7) is connected to the outer wall of the guide rail (15).

3. The automatic sandpaper changing mechanism for a sandpaper grinder according to claim 2, characterized in that: An electric push rod (6) is mounted on the top of the base plate (5) on the side of the rail block (17) away from the L-shaped frame (18) via a bracket. One end of the electric push rod (6) is connected to the inner wall of the push plate (7).

4. The automatic sandpaper changing mechanism for a sandpaper grinder according to claim 1, characterized in that: The lower connecting plate (9) is fixedly installed inside the placement frame (8), and the upper connecting plate (11) is provided inside the placement frame (8) above the lower connecting plate (9).

5. The automatic sandpaper changing mechanism for a sander according to claim 4, characterized in that: A second lifting cylinder (10) is installed at the center of the bottom end of the lower connecting plate (9). The top end of the second lifting cylinder (10) passes through the lower connecting plate (9) and is connected to the bottom end of the upper connecting plate (11).

6. The automatic sandpaper changing mechanism for a sander according to claim 4, characterized in that: The lower connecting plate (9) has guide cylinders (12) on both sides inside. A guide rod (13) is movably connected inside the guide cylinder (12). Both ends of the guide rod (13) extend to the outside of the guide cylinder (12). The top end of the guide rod (13) is connected to the bottom end of the upper connecting plate (11).

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