Sanding belt tensioning mechanism of sanding machine

Abstract

The utility model relates to the field of sanding machines, in particular to a sanding machine sanding belt tensioning mechanism which comprises a worm, a tensioning roller and a bottom plate, the outer surface of the worm is meshed with a worm gear, the inner wall of the worm gear is fixedly connected with a first gear, the outer surface of the first gear is meshed with two toothed belts, the inner wall of each toothed belt is meshed with two second gears, and the two second gears are fixedly connected with the tensioning roller. The worm is rotated to drive the worm wheel to rotate, the worm wheel drives the first gear to rotate, the first gear, the toothed belt and the second gears are connected, the effect of synchronous rotation of the multiple second gears is achieved, the second gears drive the corresponding threaded rods to rotate, and the threaded rods are connected with the corresponding connecting pieces. According to the device, the bottom plate and the spring and the limiting block installed on the bottom plate can be subjected to limiting installation, the tensioning roller can be conveniently installed, on the contrary, the disassembling effect is achieved, and the effect that the tensioning roller and the spring can be conveniently overhauled and maintained by rapidly installing and disassembling the tensioning roller and the spring through the device is achieved.

Description

Technical Field

[0001] This utility model relates to the field of sanding machine technology, specifically to a sanding machine belt tensioning mechanism. Background Technology

[0002] A sander generally refers to a grinding wheel machine. A grinding wheel machine is a common piece of equipment used to sharpen various knives and tools. It is also used for grinding, deburring, and cleaning ordinary small parts. It mainly consists of a base, a grinding wheel, an electric motor or other power source, a bracket, a protective cover, and a water supply device.

[0003] Abrasive belts, also known as flexible abrasives, offer advantages over solid abrasive wheels in polishing. They are more flexible and safer, offer higher precision, and have lower grinding costs. They are strip-shaped tools made by bonding abrasive to flexible materials such as paper or cloth using an adhesive, and are a major form of coated abrasives.

[0004] However, it has been found that in the existing sanding belt tensioning mechanism of sanders, the springs and tension rollers responsible for tensioning will experience spring fatigue and wear on the surface of the tension rollers after long-term use. The existing equipment cannot achieve quick replacement and maintenance of the springs and tension rollers, which is inconvenient to use.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] The existing technology mentioned above has shortcomings and defects, such as the inability to quickly replace and repair springs and tension rollers, and its inconvenience in use.

[0007] This utility model discloses a sander belt tensioning mechanism, including a worm, a tensioning roller, and a base plate. A worm wheel meshes with the outer surface of the worm, and a gear is fixedly connected to the inner wall of the worm wheel. Two toothed belts mesh with the outer surface of the gear, and two gears mesh with the inner wall of each toothed belt. A threaded rod is fixedly connected to the inner wall of each gear, and a connecting piece is threadedly connected to the outer surface of each threaded rod. Two limiting shells and a support frame are provided above the base plate. The outer surface of each connecting piece is fixedly connected to the outer surface of the corresponding limiting shell. A limiting block is slidably connected to the inner wall of each limiting shell. The inner wall of each limiting block is fitted onto the outer surface of the tensioning roller. Two springs are fixedly connected to the upper surface of the base plate, and the top end of each spring is fixedly connected to the bottom surface of the corresponding limiting block.

[0008] Furthermore, the outer surface of each threaded rod is rotatably connected to the inner wall of the base plate, the outer surface of the worm is rotatably connected to the outer surface of the base plate, and the top end of the first gear is rotatably connected to the bottom surface of the base plate.

[0009] Further, the inner wall of the support frame is rotationally connected with two guide rollers, and the inner wall of the support frame is fixedly connected with a mounting block.

[0010] Further, the right side of the mounting block is fixedly connected with a telescopic rod, and the output end of the telescopic rod is fixedly connected with a mounting frame.

[0011] Further, the upper surface of the support frame is fixedly connected with a motor, the upper side of the support frame is provided with two transmission rollers, the output shaft of the motor is fixedly connected with the inner wall of the corresponding transmission roller, and the inner wall of the mounting frame is rotationally connected with the outer surface of the corresponding transmission roller.

[0012] Further, the outer surface of the tensioning roller is transmissionally connected with a sand belt body, and each transmission roller and guide roller is transmissionally connected with the sand belt body.

[0013] Further, the upper surface of the support frame is provided with two sliding grooves, the inner wall of each sliding groove is slidingly connected with a sliding block, the upper surface of each sliding block is fixedly connected with a moving block, and the inner wall of each moving block is rotationally connected with the outer surface of the corresponding transmission roller.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1、 the utility model discloses a worm, worm wheel, gear one, toothed belt, gear two, threaded rod, connecting piece etc, through rotating the worm and drive the worm wheel rotation, through the worm wheel and drive gear one rotation, through the connection between gear one, toothed belt and gear two, realize the effect that a plurality of gear two synchronous rotation, through gear two and drive corresponding threaded rod rotation, through the threaded rod and corresponding connecting piece are connected, and then can install the bottom plate and the spring and the limiting block installed above, and then conveniently install the tensioning roller, and vice versa realize the effect of disassembly, and then realize the device can conveniently through the quick installation and disassembly of tensioning roller and spring, realize the effect that conveniently overhaul and maintain tensioning roller and spring.

[0016] 2、 the utility model discloses a tensioning roller, spring, guide roller, telescopic rod, mounting frame, transmission roller, sand belt body etc, through setting up spring and tensioning roller, can tighten the tensioning roller, through the extension of telescopic rod and drive mounting frame to move, through the mounting frame and drive corresponding transmission roller moves, and then can be connected with the sand belt body, realize the effect that the sand belt body is taut, through the guide roller conveniently support sand belt body, and then realize the device can through setting up telescopic rod and spring, realize the effect that the sand belt body length and fatigue degree are self -adapted. DRAWINGS

[0017] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0018] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the front view structure schematic diagram of the utility model;

[0020] Figure 3 It is the connecting relationship structure schematic diagram between the mounting frame and the transmission roller of the utility model;

[0021] Figure 4 It is the connecting relationship structure schematic diagram between the gear one and the toothed belt of the utility model.

[0022] In the figure: 1, worm; 2, worm gear; 3, gear one; 4, toothed belt; 5, gear two; 6, threaded rod; 7, connecting piece; 8, limit shell; 9, limit block; 10, tensioning roller; 11, spring; 12, bottom plate; 13, support frame; 14, guide roller; 15, mounting block; 16, telescopic rod; 17, mounting frame; 18, motor; 19, transmission roller; 20, abrasive belt main body; 21, sliding groove; 22, sliding block; 23, moving block. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the utility model with drawings, for the purpose of clear illustration, many details on the real object will be described in the following description. However, it should be understood that these details on the real object should not be used to limit the utility model. That is to say, in some embodiments of the utility model, these details on the real object are unnecessary. In addition, for the purpose of simplifying the drawing, some conventional structures and components will be drawn in a simple schematic way in the drawing.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4The utility model discloses a sanding machine abrasive band tensioning mechanism, including worm 1, tensioning roller 10 and bottom plate 12, the outer surface of worm 1 is engaged with worm wheel 2, places worm wheel 2 at the side of worm 1, and it is connected between, through the rotation of worm 1, worm wheel 2's rotation effect can be realized, the inner wall of worm wheel 2 is fixedly connected with gear one 3, gear one 3 is installed on the inner wall of worm wheel 2, and it is set as fixed connection between them, realizes the positioning installation effect of gear one 3, through the rotation of worm wheel 2, gear one 3's rotation effect can be realized, the outer surface of gear one 3 is engaged with two tooth belts 4, the inner wall of every tooth belt 4 is engaged with two gear two 5, places tooth belt 4 on the surface of gear one 3, and gear two 5 is placed on the inner side of corresponding tooth belt 4, through the connection between them, when gear one 3 rotates, the synchronous rotation effect of multiple gear two 5 can be realized.

[0025] In a preferred embodiment, the inner wall of each gear two 5 is fixedly connected with a threaded rod 6, the threaded rod 6 is installed on the inner wall of the corresponding gear two 5, and is fixedly connected between them, through the rotation of gear two 5, the rotation effect of the threaded rod 6 can be realized, the outer surface of each threaded rod 6 is threadedly connected with a connecting piece 7, the connecting piece 7 is placed on the surface of the corresponding threaded rod 6, and is connected between them, through the rotation of the threaded rod 6, the connecting effect of the connecting piece 7 can be realized, the upper side of the bottom plate 12 is provided with two limiting shells 8 and support frames 13, the outer surface of each connecting piece 7 is fixedly connected with the outer surface of the corresponding limiting shell 8, the limiting shell 8 and the support frame 13 are placed on the upper side of the bottom plate 12, and the connecting piece 7 is connected with the corresponding limiting shell 8, realizing the positioning installation effect of the connecting piece 7.

[0026] In the embodiment, the inner wall of each limiting shell 8 is slidingly connected with a limiting block 9, the limiting block 9 is placed on the inner wall of the limiting shell 8 and is slidingly connected, realizing the limiting effect of the limiting block 9, the inner wall of each limiting block 9 is sleeved with the outer surface of the tensioning roller 10, the corresponding limiting block 9 is connected with the tensioning roller 10, and is connected in a sleeved manner, facilitating the limiting of the tensioning roller 10 and the dismounting of the tensioning roller 10, the upper surface of the bottom plate 12 is fixedly connected with two springs 11, the top end of each spring 11 is fixedly connected with the bottom surface of the corresponding limiting block 9, the spring 11 is installed on the upper surface of the bottom plate 12, realizing the positioning installation effect of the spring 11, the top end of the spring 11 is connected with the corresponding limiting block 9, the limiting block 9 can be stretched by the spring 11, ensuring that the tensioning roller 10 is always pulled.

[0027] As Figure 4As shown, the outer surface of each threaded rod 6 is rotatably connected to the inner wall of the base plate 12. The threaded rod 6 and the base plate 12 are rotatably connected to achieve the limiting effect of the threaded rod 6. The outer surface of the worm 1 is rotatably connected to the outer surface of the base plate 12. The worm 1 and the base plate 12 are connected by an installation component, which is also rotatably connected to achieve the limiting effect of the worm 1. The top end of the gear 3 is rotatably connected to the bottom surface of the base plate 12. The top end of the gear 3 and the bottom surface of the base plate 12 are rotatably connected to facilitate the limiting effect of the worm wheel 2.

[0028] In a preferred embodiment, two guide rollers 14 are rotatably connected to the inner wall of the support frame 13. The guide rollers 14 are mounted on the inner wall of the support frame 13 and are configured as a rotatable connection to achieve the limiting effect of the guide rollers 14. An mounting block 15 is fixedly connected to the inner wall of the support frame 13 and is mounted on the inner wall of the support frame 13 and is configured as a fixed connection to achieve the positioning and installation effect of the mounting block 15.

[0029] In this embodiment, a telescopic rod 16 is fixedly connected to the right side of the mounting block 15. The telescopic rod 16 is installed on the right side of the mounting block 15 to achieve the positioning and installation effect of the telescopic rod 16. The telescopic rod 16 is electrically telescopic, which has the advantages of stability and speed. A mounting bracket 17 is fixedly connected to the output end of the telescopic rod 16. The mounting bracket 17 is installed on the output end of the telescopic rod 16 and fixed between them. The telescopic rod 16 can be used to move the mounting bracket 17.

[0030] like Figure 3 As shown, a motor 18 is fixedly installed on the upper surface of the support frame 13. The motor 18 is installed on the upper surface of the support frame 13 to achieve the positioning and installation effect of the motor 18. Two transmission rollers 19 are provided above the support frame 13. The transmission rollers 19 are placed above the support frame 13. The output shaft of the motor 18 is fixedly connected to the inner wall of the corresponding transmission roller 19. The inner wall of the mounting frame 17 is rotatably connected to the outer surface of the corresponding transmission roller 19. The output shaft of the motor 18 is connected to the corresponding transmission roller 19. The rotation effect of the transmission roller 19 can be achieved by the motor 18. The other transmission roller 19 is connected to the mounting frame 17 and set as a rotatable connection to achieve the limiting effect of the transmission roller 19.

[0031] In a preferred embodiment, the outer surface of the tension roller 10 is connected to the sanding belt body 20. The sanding belt body 20 is placed on the circumferential surface of the tension roller 10. Each drive roller 19 and guide roller 14 is connected to the sanding belt body 20. Connecting the drive roller 19 and guide roller 14 to the sanding belt body 20 facilitates the movement of the sanding belt body 20.

[0032] In the embodiment, the upper surface of the support frame 13 is provided with two sliding grooves 21, the sliding grooves 21 are provided on the upper surface of the support frame 13 to realize the positioning effect of the sliding grooves 21, the inner wall of each sliding groove 21 is slidably connected with a sliding block 22, the sliding block 22 is placed on the inner wall of the sliding groove 21 and is arranged in a sliding connection to realize the limiting effect of the sliding block 22, the upper surface of each sliding block 22 is fixedly connected with a moving block 23, the inner wall of each moving block 23 is rotatably connected with the outer surface of the corresponding transmission roller 19, the moving block 23 is installed on the upper surface of the corresponding sliding block 22, and the surface of one of the transmission rollers 19 is connected with the corresponding moving block 23 in a rotatable connection, which can ensure the stable movement of the transmission roller 19.

[0033] The above merely describes the implementation of the present application and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A sanding machine belt tensioning mechanism comprising a worm (1), a tensioning roller (10) and a base plate (12), characterized in that: The outer surface of the worm (1) is engaged with the worm gear (2), the inner wall of the worm gear (2) is fixedly connected with the gear one (3), the outer surface of the gear one (3) is engaged with two toothed belts (4), the inner wall of each toothed belt (4) is engaged with two gear twos (5), the inner wall of each gear two (5) is fixedly connected with the threaded rod (6), the outer surface of each threaded rod (6) is threadedly connected with the connecting piece (7), the upper side of the bottom plate (12) is provided with two limiting shells (8) and supporting frames (13), the outer surface of each connecting piece (7) is fixedly connected with the outer surface of the corresponding limiting shell (8), the inner wall of each limiting shell (8) is slidably connected with the limiting block (9), the inner wall of each limiting block (9) is sleeved with the outer surface of the tensioning roller (10), the upper surface of the bottom plate (12) is fixedly connected with two springs (11), and the top end of each spring (11) is fixedly connected with the bottom surface of the corresponding limiting block (9).

2. The belt tensioning mechanism of claim 1, wherein: The outer surface of each threaded rod (6) is rotatably connected with the inner wall of the bottom plate (12), the outer surface of the worm (1) is rotatably connected with the outer surface of the bottom plate (12), and the top end of the gear one (3) is rotatably connected with the bottom surface of the bottom plate (12).

3. The belt tensioning mechanism of claim 1, wherein: The inner wall of the supporting frame (13) is rotatably connected with two guide rollers (14), and the inner wall of the supporting frame (13) is fixedly connected with the mounting block (15).

4. The belt tensioning mechanism of claim 3, wherein: The right side of the mounting block (15) is fixedly connected with the telescopic rod (16), and the output end of the telescopic rod (16) is fixedly connected with the mounting frame (17).

5. The belt tensioning mechanism of claim 4, wherein: The upper surface of the supporting frame (13) is fixedly connected with the motor (18), the upper side of the supporting frame (13) is provided with two transmission rollers (19), the output shaft of the motor (18) is fixedly connected with the inner wall of the corresponding transmission roller (19), and the inner wall of the mounting frame (17) is rotatably connected with the outer surface of the corresponding transmission roller (19).

6. The belt tensioning mechanism of claim 5, wherein: The outer surface of the tensioning roller (10) is drivingly connected with the abrasive belt body (20), and each transmission roller (19) and guide roller (14) is drivingly connected with the abrasive belt body (20).

7. The belt tensioning mechanism of claim 5, wherein: The upper surface of the supporting frame (13) is provided with two sliding grooves (21), the inner wall of each sliding groove (21) is slidably connected with the sliding block (22), the upper surface of each sliding block (22) is fixedly connected with the moving block (23), and the inner wall of each moving block (23) is rotatably connected with the outer surface of the corresponding transmission roller (19).

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