Automatic belt tensioning device for belt sander

Abstract

The utility model relates to the technical field of belt tensioning devices of belt sanders, in particular to an automatic belt tensioning device for a belt sander, which comprises a belt sander body, a bottom plate arranged above the belt sander body, a second conveying roller arranged above the bottom plate, a movable block arranged on one side of the bottom plate, and a first conveying roller arranged above the movable block. A conveying mechanism is arranged on one side of the bottom plate, the first conveying roller, the conveying mechanism and the second conveying roller are sleeved with a belt, an extension plate is fixedly arranged on the upper end face of the bottom plate, a limiting arc-shaped groove is formed in the extension plate, a first movable rod is connected into the limiting arc-shaped groove in a penetrating mode, and a second movable rod is arranged above the bottom plate. A cushion block is arranged below the movable block, a connecting block is arranged on one side of the cushion block, a movable groove is formed in the connecting block, a limiting block is arranged in the movable groove, and a movable shaft is connected into the limiting block in a penetrating mode. By automatically adjusting the tensioned belt, the follow-up working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of belt tensioning devices for sanding belt machines, in particular to an automatic belt tensioning device for sanding belt machines. Background Art

[0002] A belt sander is a device used to grind the outer surface of a workpiece to improve its finish. Belt sanding machines offer advantages in high production efficiency and product quality, and are therefore widely used in various fields, particularly in the hardware, plumbing, and furniture industries.

[0003] For example, patent No. 202220044108.0 discloses a belt tensioning device for a sanding machine, whose structure includes a mounting base, a first rotating wheel is provided on the front of the mounting base, a tensioning assembly is provided on the bottom of the mounting base, a cylinder is provided on the upper side of the mounting base, a groove is provided in the middle of the interior of the mounting base, a sliding top block is provided inside the groove, the tensioning assembly includes a slide groove, a slider, a movable seat, a second rotating wheel, a connecting plate and a spring, a slide groove is provided symmetrically on the bottom of the mounting base, a slider is provided inside the slide groove, a movable seat is provided on the lower side of the slider, and a second movable seat is provided on the front of the movable seat. The rotating wheel and the connecting plate are provided at the bottom of the movable seat, and a spring is provided on the inner side of the connecting plate. The utility model can push the sliding top block to move up and down through the provided cylinder, and the provided movable seat can slide left and right at the bottom of the mounting base through the slide groove and the slider, so that after the sliding top block is pushed between the two movable seats, the two movable seats will move outward. At this time, the distance between the first rotating wheel and the second rotating wheel will become larger, so that the sanding belts on the first rotating wheel and the second rotating wheel can be tensioned, and the provided spring can pull the two movable seats back to their original position after the sliding top block slides out of the gap between the two movable seats, thereby facilitating the installation and disassembly of the sanding belts.

[0004] Therefore, in order to solve the problem that the belt of the above-mentioned belt machine becomes loose after a long period of operation, thereby affecting the subsequent use efficiency, a belt that can automatically adjust the tension can be designed to improve work efficiency. Utility Model Content

[0005] In order to overcome the problem that the belt of the sanding machine becomes loose after a long period of operation, thereby affecting the subsequent use efficiency.

[0006] The technical solution of the utility model is: an automatic belt tensioning device for a sanding belt machine, comprising a sanding belt machine body, a bottom plate is provided above the sanding belt machine body, a second conveying roller is provided above the bottom plate, a movable block is provided on one side of the bottom plate, a first conveying roller is provided above the movable block, a conveying mechanism is provided on one side of the bottom plate, a belt is sleeved on the outside of the first conveying roller, the conveying mechanism and the second conveying roller, an extension plate is fixedly provided on the upper end surface of the bottom plate, a limiting arc groove is provided inside the extension plate, a first movable rod is connected through the inside of the limiting arc groove, a second movable rod is provided above the bottom plate, a pad is provided below the movable block, a connecting block is provided on one side of the pad, a movable groove is provided inside the connecting block, a limiting block is provided inside the movable groove, a movable shaft is connected through the inside of the limiting block, a rotating rod is movably connected to one side of the movable shaft, and a connecting rod is provided on one side of the limiting block.

[0007] Preferably, a sponge handle is provided at one end of the rotating rod, and an anti-slip groove is provided on the surface of the sponge handle to prevent slipping during adjustment and toggling.

[0008] Preferably, a ball handle is provided on one side of the connecting rod. The ball handle is made of an integrated rubber material and has an anti-slip effect when adjusting and turning.

[0009] Preferably, a first rotating shaft movably connected to the first conveying roller is provided above the cushion block for rotation.

[0010] Preferably, a second rotating shaft is connected through the interior of the second conveying roller, a clamping groove is provided inside the second conveying roller, and a clamping block is provided on one side of the second rotating shaft and is clamped into the clamping groove for rotation.

[0011] Preferably, a motor is provided below the second rotating shaft and located below the bottom plate, and support plates are provided on both sides of the motor for the operation of the equipment.

[0012] Preferably, a first handle is provided on one side of the first movable rod, and a second handle is provided below the second movable rod to assist in adjustment.

[0013] Beneficial effects of the utility model:

[0014] 1. When adjusting the tension of the belt, adjust the first handle so that it drives the first movable rod on one side to slide in the limiting arc groove. At the same time, adjust the second handle so that the second movable rod on the upper end also starts to adjust. This adjustment adjusts the angle of the bottom plate, which causes the second conveyor roller to start tilting, and the tension of the belt sleeved on the outside can be adjusted.

[0015] 2. By rotating the connecting rod, the limit block at one end is driven to rotate in the movable groove. At the same time, the rotation of the rotating rod drives the movable shaft on one side to rotate. The adjustment of the two can make the pad and the first rotating shaft above start to rotate. At the same time, the first conveyor roller is also adjusted, so that the belt can be adjusted to be loose or tight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the belt tensioning device of the sanding machine of the utility model;

[0017] Figure 2 The utility model is shown Figure 1 A schematic diagram of the partially enlarged structure of solid A;

[0018] Figure 3 Shown is a side view of the three-dimensional structure of the belt tensioning device of the sanding machine of the utility model;

[0019] Figure 4 The utility model is shown Figure 3 A schematic diagram of the partially enlarged structure of the solid B;

[0020] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the belt tensioning device of the sanding machine of the utility model;

[0021] Figure 6 The utility model is shown Figure 5 Schematic diagram of the enlarged structure of the solid C.

[0022] Explanation of the accompanying symbols: 1. Sanding machine body; 2. Motor; 3. Belt; 4. Conveying mechanism; 5. First conveying roller; 6. First rotating shaft; 7. Movable block; 8. Second conveying roller; 9. Second rotating shaft; 10. Bottom plate; 11. Extension plate; 12. Limiting arc groove; 13. First movable rod; 14. First handle; 15. Second movable rod; 16. Second handle; 17. Pad; 18. Connecting block; 19. Movable groove; 20. Limiting block; 21. Connecting rod; 22. Movable shaft; 23. Rotating rod. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See also Figures 1-6The utility model provides an embodiment: an automatic belt tensioning device for a sanding belt machine, comprising a sanding belt machine body 1, a bottom plate 10 is provided above the sanding belt machine body 1, a second conveying roller 8 is provided above the bottom plate 10, a movable block 7 is provided on one side of the bottom plate 10, a first conveying roller 5 is provided above the movable block 7, a conveying mechanism 4 is provided on one side of the bottom plate 10, a belt 3 is sleeved on the outside of the first conveying roller 5, the conveying mechanism 4 and the second conveying roller 8, an extension plate 11 is fixedly provided on the upper end surface of the bottom plate 10, and the extension plate 11 A limiting arc groove 12 is provided inside the limiting arc groove 12, and a first movable rod 13 is connected to the inside of the limiting arc groove 12. A second movable rod 15 is provided above the bottom plate 10, and a cushion block 17 is provided below the movable block 7. A connecting block 18 is provided on one side of the cushion block 17. A movable groove 19 is provided inside the connecting block 18, and a limiting block 20 is provided inside the movable groove 19. A movable shaft 22 is connected to the inside of the limiting block 20, and a rotating rod 23 is movably connected to one side of the movable shaft 22. A connecting rod 21 is provided on one side of the limiting block 20.

[0025] See also Figure 4-Figure 6 In this embodiment, a sponge handle is provided at one end of the rotating rod 23, and an anti-slip groove is provided on the surface of the sponge handle. A ball handle is provided on one side of the connecting rod 21, and the ball handle is made of an integrated rubber material. A first rotating shaft 6 is provided above the pad 17 and is movably connected to the first conveying roller 5. When the belt 3 is tensioned and adjusted, the first handle 14 is adjusted to drive the first movable rod 13 on one side to slide in the limiting arc groove 12. At the same time, the second handle 16 is adjusted to cause the second movable rod 15 at its upper end to also start to adjust. This adjustment adjusts the angle of the bottom plate 10, which causes the second conveying roller 8 to start to tilt, and the belt 3 sleeved on the outside can be tensioned and adjusted to a tightness.

[0026] See also Figure 1-Figure 4 In this embodiment, the interior of the second conveying roller 8 is connected with the second rotating shaft 9, and the interior of the second conveying roller 8 is provided with a clamping groove, and one side of the second rotating shaft 9 is provided with a clamping block that is clamped into the clamping groove. A motor 2 is provided below the second rotating shaft 9 and is located below the bottom plate 10. Support plates are provided on both sides of the motor 2. A first handle 14 is provided on one side of the first movable rod 13, and a second handle 16 is provided below the second movable rod 15. The rotation adjustment of the connecting rod 21 drives the limit block 20 at one end to rotate in the movable groove 19, and at the same time, the rotation of the rotating rod 23 drives the movable shaft 22 on one side to rotate. The adjustment of the two can make the pad 17 and the first rotating shaft 6 above start to rotate, and at the same time, the first conveying roller 5 is also adjusted, so that the belt 3 can be adjusted to be loose or tight.

[0027] During operation, when the belt 3 is tensioned and adjusted, the first handle 14 is adjusted to drive the first movable rod 13 on one side to slide in the limiting arc groove 12, and the second handle 16 is adjusted to make the second movable rod 15 at its upper end also start to adjust. This adjustment adjusts the angle of the bottom plate 10, so that the second conveying roller 8 starts to tilt, and the tension of the belt 3 sleeved on the outside can be adjusted; the rotation adjustment of the connecting rod 21 drives the limit block 20 at one end to rotate in the movable groove 19, and the rotation of the rotating rod 23 drives the movable shaft 22 on one side to rotate. The adjustment of the two can make the pad 17 and the first rotating shaft 6 above start to rotate, and the first conveying roller 5 is also adjusted at the same time, so that the belt 3 can be adjusted to be loose or tight.

[0028] Through the above steps, when the belt tensioning is adjusted, the first handle is adjusted to drive the first movable rod on one side to slide in the limiting arc groove, and the second handle is adjusted at the same time so that the second movable rod at the upper end thereof also starts to adjust. This adjustment adjusts the angle of the bottom plate, which causes the second conveying roller to start tilting. The tensioning tightness of the belt sleeved on the outside can be adjusted, which can solve the problem that the belt of the sanding machine becomes loose after a long period of operation, thereby affecting the subsequent use efficiency.

Claims

1. An automatic belt tensioning device for a sanding belt machine, comprising a sanding belt machine body (1), characterized in that: A bottom plate (10) is provided above the sanding machine body (1), a second conveying roller (8) is provided above the bottom plate (10), a movable block (7) is provided on one side of the bottom plate (10), a first conveying roller (5) is provided above the movable block (7), a conveying mechanism (4) is provided on one side of the bottom plate (10), a belt (3) is sleeved on the outside of the first conveying roller (5), the conveying mechanism (4) and the second conveying roller (8), an extension plate (11) is fixedly provided on the upper end surface of the bottom plate (10), a limited arc groove (12) is provided inside the extension plate (11), and the limited arc groove The interior of the movable block (12) is connected through a first movable rod (13), a second movable rod (15) is provided above the bottom plate (10), a cushion block (17) is provided below the movable block (7), a connecting block (18) is provided on one side of the cushion block (17), a movable groove (19) is provided inside the connecting block (18), a limiting block (20) is provided inside the movable groove (19), a movable shaft (22) is connected through the interior of the limiting block (20), a rotating rod (23) is movably connected to one side of the movable shaft (22), and a connecting rod (21) is provided on one side of the limiting block (20).

2. The automatic belt tensioning device for a sanding machine according to claim 1, characterized in that: One end of the rotating rod (23) is provided with a sponge handle, and the surface of the sponge handle is provided with an anti-slip groove.

3. The automatic belt tensioning device for a sanding machine according to claim 1, characterized in that: A spherical handle is provided on one side of the connecting rod (21), and the spherical handle is made of an integrated rubber material.

4. The automatic belt tensioning device for a sanding machine according to claim 1, characterized in that: A first rotating shaft (6) is provided above the cushion block (17) and is movably connected to the first conveying roller (5).

5. The automatic belt tensioning device for a sanding machine according to claim 1, characterized in that: A second rotating shaft (9) is connected through the interior of the second conveying roller (8), a clamping groove is provided inside the second conveying roller (8), and a clamping block is provided on one side of the second rotating shaft (9) and is clamped into the interior of the clamping groove.

6. The automatic belt tensioning device for a sanding machine according to claim 5, characterized in that: A motor (2) located below the bottom plate (10) is provided below the second rotating shaft (9), and support plates are provided on both sides of the motor (2).

7. The automatic belt tensioning device for a sanding machine according to claim 1, characterized in that: A first handle (14) is provided on one side of the first movable rod (13), and a second handle (16) is provided below the second movable rod (15).

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