Abrasive belt grinding device

Abstract

The utility model provides an abrasive belt polishing device which comprises a machine frame, an abrasive belt, an abrasive belt, a driving motor and an abrasive belt, wherein the driving motor is fixed in the machine frame; the grinding assembly comprises a mounting bracket and a driving wheel, the driving wheel is connected to the driving motor, the mounting bracket is connected with a driven wheel and a tensioning assembly, and an abrasive belt is wound on the driving wheel, the driven wheel and the tensioning assembly; and the protection mechanism comprises a first protection plate, a second protection plate and a third protection plate, and the protection mechanism is connected to the mounting bracket in a horizontal moving manner and is fastened through a fastening structure. By means of the structure, when the abrasive belt is replaced, an operator does not need to completely disassemble the protection mechanism and only needs to horizontally move the protection mechanism away by a certain distance, the protection mechanism does not interfere with the hand, and the replacement efficiency of the abrasive belt can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of workpiece grinding, and in particular to a belt grinding device. Background Technology

[0002] In existing belt sanding devices, the sanding belt is typically tightly mounted on the driving and driven wheels of the sanding mechanism, and a tensioning device maintains appropriate tension to ensure sanding effectiveness. However, the protective cover, as a crucial component for ensuring operator safety and collecting dust and debris generated during sanding, often presents obstacles to belt replacement due to its structural design. Specifically, because the sanding belt is a consumable part, it must be replaced after sanding a certain number of parts. The small gap between the protective cover and the sanding belt causes interference with hand movements during replacement, resulting in slow replacement speeds and undoubtedly impacting sanding efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a belt sanding device. This device has a simple structure, enables rapid belt replacement, and does not interfere with the hand during replacement, thus improving belt replacement efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a belt sander, comprising:

[0005] A frame, in which a drive motor is fixed;

[0006] A grinding assembly includes a mounting bracket and a drive wheel, the drive wheel being connected to a drive motor, a driven wheel and a tensioning wheel being connected to the mounting bracket, and an abrasive belt being wound around the drive wheel, the driven wheel and the tensioning assembly;

[0007] A protective mechanism comprising a first protective plate, a second protective plate, and a third protective plate, wherein the protective mechanism is horizontally movable and connected to a mounting bracket and is secured by a fastening structure.

[0008] Furthermore, the mounting bracket includes a vertical plate with a horizontal plate at the top. The horizontal plate has a first flange and a second flange on its two sides. The fastening structure includes a first screw fixed on the first flange, a second screw fixed on the second flange, a first adjustment groove on the first protective plate, and a second adjustment groove on the second protective plate.

[0009] Furthermore, the first protective plate has a first extension plate, the second protective plate has a second extension plate, the first adjustment groove is formed on the first extension plate, and the second adjustment groove is formed on the second extension plate.

[0010] Furthermore, a reinforcing plate is fixed between the first flange and the second flange.

[0011] Furthermore, the tensioning assembly includes a mounting block, through which a lead screw passes. A fork is fixed to the top of the lead screw, and a tensioning wheel is rotatably connected between the forks. A first fastening nut and a second fastening nut are fixed above and below the mounting block, respectively.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. With this structure, when changing the sanding belt, the operator does not need to completely disassemble the protective mechanism. He only needs to move it horizontally a certain distance away, which will not interfere with the hands and can effectively improve the efficiency of sanding belt replacement.

[0014] 2. With the first and second adjustment slots, the protective mechanism can be easily adjusted by simply loosening the hand-tightening nut when it moves. During adjustment, simply push the protective mechanism.

[0015] 3. The tensioning component allows the sanding belt to be quickly re-tensioned when it becomes loose, simply by adjusting the screw in different positions within the mounting block, ensuring that the sanding device can perform sanding normally. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention;

[0017] Figure 2 This is the front view of the present utility model.

[0018] Figure 3 This is a structural diagram from another direction of the present invention;

[0019] In the diagram: 1. Frame; 2. Sanding belt; 3. Mounting bracket; 4. Drive wheel; 5. Driven wheel; 6. Tensioning wheel; 7. First protective plate; 8. Second protective plate; 9. Mounting block; 10. Third protective plate; 11. Vertical plate; 12. Horizontal plate; 13. First flange; 14. Second flange; 15. First extension plate; 16. Second extension plate; 17. Reinforcing plate; 18. Lead screw; 19. Fork head; 20. First fastening nut; 21. Second fastening nut; 22. First adjusting groove; 23. Second adjusting groove; 24. First screw; 25. Hand-tightening nut; Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-3 The belt sander shown includes:

[0022] A frame 1, in which a drive motor is fixed;

[0023] A grinding assembly includes a mounting bracket 3 and a drive wheel 4. The drive wheel 4 is connected to a drive motor. A driven wheel 5 and a tensioning assembly are connected to the mounting bracket 3. A sanding belt 2 is wound around the drive wheel 4, the driven wheel 5 and the tensioning assembly.

[0024] A protective mechanism, comprising a first protective plate 7, a second protective plate 8, and a third protective plate 10, is horizontally movable and connected to a mounting bracket 3 and is secured by a fastening structure.

[0025] The process of using this utility model is as follows: the drive motor in the frame drives the drive wheel 4 of the grinding assembly to rotate, which in turn drives the driven wheel 5 and the tension wheel of the tensioning assembly to rotate. Since the sanding belt 2 is wound around the drive wheel 4, driven wheel 5 and tension wheel 6, it can drive the sanding belt 2 to rotate. When the sanding belt 2 is rotating, the operator can hold the parts for grinding. In order to play a protective role, a protective structure is provided on the outside of the sanding belt 2, which includes three protective plates. The protective plates are horizontally movable and connected to the mounting bracket 3. When the sanding belt 2 needs to be replaced, the protective mechanism is directly moved horizontally to ensure that it will not interfere with the hand during replacement, and also to provide more operating space during replacement, so as to realize the quick replacement of the sanding belt 2. After the replacement is completed, the protective mechanism is tightened by the fastening mechanism.

[0026] Furthermore, the mounting bracket 3 includes a vertical plate 11, with a horizontal plate 12 at its top. The horizontal plate 12 has a first flange 13 and a second flange 14 on its two sides. The fastening structure includes a first screw fixed to the first flange 13, a second screw fixed to the second flange 14, a first adjustment groove 22 on the first protective plate 7, and a second adjustment groove 23 on the second protective plate 8. Specifically, the main body of the mounting bracket 3 of this utility model is a vertical plate 11, with a horizontal plate 12 fixed at its top. The horizontal plate 12 has a first flange 13 and a second flange 14 on its two sides. The first and second screws on the two flanges allow for horizontal movement of the first protective plate 7 and the second protective plate 8. When the first and second protective plates 7 and 8 move horizontally, they will move the third protective plate 10 between them, thus creating a distance between it and the sanding belt 2, facilitating replacement of the sanding belt 2.

[0027] Furthermore, the first protective plate 7 has a first extension plate 15, and the second protective plate 8 has a second extension plate 16. The first adjustment groove 22 is formed on the first extension plate 15, and the second adjustment groove 23 is formed on the second extension plate 16. Specifically, by providing the first extension plate 15 on the first protective plate 7 and the second extension plate 16 on the second protective plate 8, the protective structure can have a larger adjustment space, allowing for greater movement during translation.

[0028] Furthermore, a reinforcing plate 17 is fixed between the first flange 13 and the second flange 14. By fixing the reinforcing plate 17 between the first flange 13 and the second flange 14, the strength between the two flanges can be increased, and they are less prone to deformation.

[0029] Furthermore, the tensioning assembly includes a mounting block 9, through which a lead screw 18 passes. A fork 19 is fixed to the top of the lead screw 18, and a tensioning wheel 6 is rotatably connected between the forks 19. A first fastening nut 20 and a second fastening nut 21 are fixed above and below the mounting block 9, respectively, on the lead screw 18. Specifically, the tensioning assembly of this utility model consists of a mounting block 9 and a lead screw 18. The mounting block 9 can limit the lead screw 18 and simultaneously ensure that the sanding belt 2 on the tensioning wheel 6, driven wheel 5, and driving wheel 4 are on the same vertical plane. When the sanding belt 2 becomes loose, or when the sanding belt 2 cannot be tensioned due to manufacturing specifications, the first fastening nut 20 and the second fastening nut 21 can be adjusted to adjust the position of the lead screw 18 in the mounting block 9 (the lead screw 18 can move freely in the through hole of the mounting block), so that the tensioning wheel 6 tensions the sanding belt 2.

[0030] Furthermore, both the first screw 24 and the second screw are connected to hand-tightening nuts 25. Specifically, the two screws of this invention are equipped with hand-tightening nuts (i.e., levers are provided on both sides of a regular nut), so that the operator can directly unscrew the nut by hand, making the operation more convenient.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A belt abrasive grinding device, characterized in that, include: A frame, in which a drive motor is fixed; A grinding assembly includes a mounting bracket and a drive wheel, the drive wheel being connected to a drive motor, a driven wheel and a tensioning assembly being connected to the mounting bracket, and an abrasive belt being wound around the drive wheel, the driven wheel and the tensioning assembly; A protective mechanism comprising a first protective plate, a second protective plate, and a third protective plate, wherein the protective mechanism is horizontally movable and connected to a mounting bracket and is secured by a fastening structure.

2. The belt sanding device according to claim 1, characterized in that: The mounting bracket includes a vertical plate with a horizontal plate on top. The horizontal plate has a first flange and a second flange on both sides. The fastening structure includes a first screw fixed on the first flange, a second screw fixed on the second flange, a first adjustment groove on the first protective plate, and a second adjustment groove on the second protective plate.

3. The belt sanding device according to claim 2, characterized in that: The first protective plate has a first extension plate, the second protective plate has a second extension plate, the first adjustment groove is formed on the first extension plate, and the second adjustment groove is formed on the second extension plate.

4. The belt sanding device according to claim 3, characterized in that: A reinforcing plate is fixed between the first flange and the second flange.

5. The belt sanding device according to claim 4, characterized in that: The tensioning assembly includes a mounting block, through which a lead screw passes. A fork is fixed to the top of the lead screw, and a tensioning wheel is rotatably connected between the forks. A first fastening nut and a second fastening nut are fixed above and below the mounting block, respectively.

6. The belt sanding device according to claim 5, characterized in that: Both the first screw and the second screw are connected to hand-tightening nuts.

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