Abrasive belt supporting mechanism and tool sharpener thereof

Abstract

The utility model belongs to the technical field of automatic tool sharpeners, and particularly relates to an abrasive belt supporting mechanism and a tool sharpener thereof. The abrasive belt supporting mechanism comprises an inner support arranged between a vertical plate and an auxiliary plate, and the left end and the right end of the inner support are in single-degree-of-freedom sliding connection with the vertical plate and the auxiliary plate respectively; a driving wheel is connected between the vertical plate and the auxiliary plate through supporting of a driving shaft, the inner support is connected with a driven wheel opposite to the driving wheel through supporting of a driven shaft, and a locking mechanism is arranged on the vertical plate and used for changing and limiting the position of the inner support on the vertical plate. The tool sharpener comprises a base used for supporting the vertical plate and a motor fixed to the vertical plate, a transmission mechanism is arranged between the motor and the driving shaft, and the driving wheel and the driven wheel are sleeved with abrasive belts. The abrasive belt can be replaced conveniently and quickly.

Description

Technical Field

[0001] This utility model belongs to the technical field of automatic knife sharpening machines, specifically relating to a sanding belt support mechanism and a knife sharpening machine thereof. Background Technology

[0002] Automatic blade sharpening machines are common tools that use the movement of a belt to sharpen blades. However, current belt sharpening machines generally suffer from difficulties in disassembling the belt, making assembly, adjustment, and belt replacement inconvenient. Therefore, improvements to existing technology are needed to meet practical needs. Utility Model Content

[0003] To address the problems mentioned in the background section, this invention provides a sanding belt support mechanism that facilitates the replacement, installation, and disassembly of the sanding belt.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sanding belt support mechanism, comprising a vertical plate and a secondary plate. Preferably, an inner support is provided between the vertical plate and the secondary plate. The left and right ends of the inner support are respectively slidably connected to the vertical plate and the secondary plate with a single degree of freedom. A drive wheel is supported and connected between the vertical plate and the secondary plate via a drive shaft. A passive wheel is supported and connected to the drive wheel via a passive shaft. A locking mechanism is provided on the vertical plate. The locking mechanism is used to change and limit the position of the inner support on the vertical plate.

[0005] Preferred, the locking mechanism includes a movable shaft rotatably connected to the upright plate with a single degree of freedom, a connecting rod fixedly connected to the movable shaft on the outside of the upright plate, a drive arm fixed to the movable shaft and located adjacent to the inner support, and a locking shaft on the connecting rod. The upright plate has an arc corresponding to the locking shaft. A locking nut one is provided on the locking shaft on the inside of the upright plate, and a locking nut two is provided on the locking shaft on the outside of the upright plate.

[0006] Preferably, the passive shaft used to support the passive wheel is fixedly connected to the inner bracket through an adjustment assembly, and the wheelbase between the passive shaft and the active shaft can be changed when the adjustment assembly is adjusted.

[0007] Preferably, the adjustment assembly includes a right-angle bracket fixedly connected to the inner support, an adjustment screw connected to the right-angle bracket, and a locking member for locking the length of the adjustment screw extending out of the right-angle bracket, wherein the passive shaft is detachably fixedly connected to the adjustment screw.

[0008] Preferably, a bushing is fitted onto the locking shaft, and the bushing is located between the vertical plate and the connecting rod.

[0009] Preferably, the second locking nut is a wing nut, and the connecting rod is a long strip.

[0010] Preferably, a support plate is fixedly connected to the upright plate and the sub-plate, the support plate is located between the upright plate and the sub-plate, and the upper surface of the support plate is flush with the height direction of the driven wheel and the driving wheel.

[0011] A grinding machine based on the above-mentioned abrasive belt support mechanism includes a base for supporting the upright plate and a motor fixed on the upright plate. A transmission mechanism is provided between the motor and the drive shaft, and abrasive belts are fitted on the drive wheel and the driven wheel.

[0012] Preferably, the transmission mechanism is a synchronous belt transmission mechanism.

[0013] Priority is also given to the inclusion of a speed control box for adjusting the motor speed. Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, by setting an inner support that can move on the upright plate and the sub-plate, and fixing the driving wheel and the driven wheel on the upright plate and the inner support respectively, and by setting a locking mechanism to change and limit the position of the inner support on the upright plate, can significantly reduce the distance between the driving wheel and the driven wheel when the inner support moves toward the driving wheel, thus solving the problem of inconvenient disassembly of the sanding belt in the prior art. Therefore, compared with the prior art, it has the characteristics of easy installation and disassembly of the sanding belt and simple operation. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the sand belt support mechanism.

[0017] Figure 2 This is a schematic diagram of a knife grinding machine.

[0018] In the diagram: 1. Vertical plate; 2. Arc groove; 3. Wing nut; 4. Slide groove; 5. Connecting rod; 6. Handle; 7. Driven shaft; 8. Adjustment groove; 9. Driven wheel; 10. Adjusting screw; 11. Right-angle bracket; 12. Inner support; 13. Bearing; 14. Sub-plate; 15. Drive arm; 16. Drive wheel; 17. Movable shaft; 18. Bushing; 19. Drive shaft; 20. Locking shaft; 21. Locking element; 22. Transmission mechanism; 23. Motor; 24. Speed ​​control box; 25. Base; 26. Support plate. Detailed Implementation

[0019] 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 protection scope of the present utility model.

[0020] Example

[0021] Please see Figure 1-2 This utility model provides the following technical solution: a sanding belt support mechanism, comprising a vertical plate 1 and a secondary plate 14. Preferably, an inner support 12 is provided between the vertical plate 1 and the secondary plate 14. The left and right ends of the inner support 12 are respectively slidably connected to the vertical plate 1 and the secondary plate 14 with a single degree of freedom. A drive wheel 16 is supported and connected between the vertical plate 1 and the secondary plate 14 via a drive shaft 19. A passive wheel 9 is supported and connected to the drive wheel 16 via a passive shaft 7. A locking mechanism is provided on the vertical plate 1, which is used to change and limit the position of the inner support 12 on the vertical plate 1. Here, the left and right ends of the inner support 12 are respectively slidably connected to the vertical plate 1 and the secondary plate 14 with a single degree of freedom. This single degree of freedom sliding connection can be achieved using a standard slide rail assembly. However, for ease of installation and cost savings, a protrusion can be designed on the inner support 12 to provide corresponding sliding grooves 4 on the vertical plate 1 and the secondary plate 14. The protrusion can also be replaced by ordinary bolts.

[0022] When the sanding belt needs support, i.e., when it does not need to be replaced, the inner support 12 is positioned away from the drive wheel 16 under the action of the locking mechanism and is limited by the locking mechanism. Therefore, the distance between the drive wheel 16 and the driven wheel 9 is large enough to keep the sanding belt taut. When the sanding belt needs to be replaced, simply release the locking mechanism from limiting the inner support 12. The inner support 12 slides significantly towards the drive wheel 16, i.e., slides forward significantly. At this time, the distance between the drive wheel 16 and the driven wheel 9 is small, so the sanding belt is in a relaxed state and can be easily removed.

[0023] In this invention, a preferred locking mechanism comprises a movable shaft 17 rotatably connected to a vertical plate 1 with a single degree of freedom, a connecting rod fixedly connected to the movable shaft 17 on the outside of the vertical plate 1, a drive arm 15 fixed to the movable shaft 17 and located adjacent to the inner support 12, and a locking shaft 20 on the connecting rod. The vertical plate 1 has an arc corresponding to the locking shaft 20. A locking nut one is located on the inner side of the vertical plate 1 on the locking shaft 20, and a locking nut two is located on the outer side of the vertical plate 1 on the locking shaft 20. In use, manually loosening the locking nut two and moving the connecting rod upwards will cause the movable shaft 17 to rotate at its support point. When the movable shaft 17 rotates, it causes the drive arm 15 to disengage from the inner support 12, at which point the drive arm 15 releases its limiting effect on the inner support 12. After the sanding belt is removed and a new sanding belt is installed, manually pressing the connecting rod downwards will cause the drive arm 15 to press against the inner support 12 and return to its limiting position. Therefore, the locking mechanism of this invention is convenient and simple to operate. To facilitate gripping, the inventors added a handle 6 to the connecting rod. Furthermore, for smoother movement and easier operation, a bushing 18 was fitted onto the locking shaft 20. The bushing 18 is located between the vertical plate 1 and the connecting rod. A bearing 13 can also be installed at the end of the drive arm. The locking nut is a wing nut 3, and the connecting rod is a long, flat strip.

[0024] Based on the above solution, since the lengths of sanding belts of different specifications are not consistent, in order to adapt to sanding belts of the same specification, the inventors added an adjustment component. Specifically, the adjustment component includes a right-angle bracket 11 fixedly connected to the inner support 12, an adjustment screw 10 connected to the right-angle bracket 11, and a locking member 21 for locking the length of the adjustment screw 10 extending out of the right-angle bracket 11. The passive shaft 7 is detachably fixedly connected to the adjustment screw 10. When adjusting the adjustment component, the wheelbase between the passive shaft 7 and the active shaft 19 can be changed.

[0025] In order to provide a rigid plane support for grinding tools and facilitate grinding, the inventor fixedly connected a support plate 26 to the vertical plate 1 and the sub-plate 14. The support plate 26 is located between the vertical plate 1 and the sub-plate 14, and the upper end face of the support plate 26 is flush with the height direction of the driven wheel 9 and the driving wheel 16.

[0026] A grinding machine based on the aforementioned abrasive belt support mechanism includes a base 25 for supporting a vertical plate 1 and a motor 23 fixed on the vertical plate 1. A transmission mechanism 22 is provided between the motor 23 and the drive shaft 19. An abrasive belt is fitted onto the drive wheel 16 and the driven wheel 9. Preferably, the transmission mechanism 22 is a synchronous belt transmission mechanism, and its working principle is the same as that of the aforementioned abrasive belt support mechanism, which will not be described in detail here.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sanding belt support mechanism, comprising a vertical plate (1) and a secondary plate (14), characterized in that: An inner support (12) is provided between the upright plate (1) and the sub-plate (14). The left and right ends of the inner support (12) are slidably connected to the upright plate (1) and the sub-plate (14) with a single degree of freedom, respectively. An active wheel (16) is connected between the upright plate (1) and the sub-plate (14) via the support of the active shaft (19). A passive wheel (9) is connected to the inner support (12) via the passive shaft (7) and opposite to the active wheel (16). A locking mechanism is provided on the upright plate (1). The locking mechanism is used to change and limit the position of the inner support (12) on the upright plate (1).

2. The sanding belt support mechanism according to claim 1, characterized in that: The locking mechanism includes a movable shaft (17) rotatably connected to the upright plate (1) with a single degree of freedom, a connecting rod fixedly connected to the movable shaft (17) on the outside of the upright plate (1), a drive arm (15) fixed to the movable shaft (17) and located adjacent to the inner bracket (12), and a locking shaft (20) on the connecting rod. The upright plate (1) has an arc corresponding to the locking shaft (20). The locking shaft (20) is provided with a locking nut one on the inside of the upright plate (1) and a locking nut two on the outside of the upright plate (1).

3. The sanding belt support mechanism according to claim 1, characterized in that: The passive shaft (7) used to support the passive wheel (9) is fixedly connected to the inner bracket (12) through the adjustment component. When the adjustment component is adjusted, the wheelbase between the passive shaft (7) and the active shaft (19) can be changed.

4. The sanding belt support mechanism according to claim 3, characterized in that: The adjustment assembly includes a right-angle bracket (11) fixedly connected to the inner support (12), an adjustment screw (10) connected to the right-angle bracket (11), and a locking member (21) for locking the length of the adjustment screw (10) extending out of the right-angle bracket (11). The passive shaft (7) is fixedly connected to the adjustment screw (10) in a detachable manner.

5. The sanding belt support mechanism according to claim 2, characterized in that: A bushing (18) is fitted on the locking shaft (20), and the bushing (18) is located between the upright plate (1) and the connecting rod.

6. The sanding belt support mechanism according to claim 2, characterized in that: The second locking nut is a wing nut (3), and the connecting rod is a long strip in the shape of a plate.

7. A sanding belt support mechanism according to any one of claims 1-6, characterized in that: A support plate (26) is fixedly connected to the upright plate (1) and the sub-plate (14). The support plate (26) is located between the upright plate (1) and the sub-plate (14). The upper surface of the support plate (26) is flush with the height direction of the passive wheel (9) and the active wheel (16).

8. A grinding machine based on the belt abrasive support mechanism according to any one of claims 1-6, characterized in that: It includes a base (25) for supporting the upright plate (1) and a motor (23) for fixing the upright plate (1). A transmission mechanism (22) is provided between the motor (23) and the drive shaft (19). Sanding belts are fitted on the drive wheel (16) and the driven wheel (9).

9. The sharpening machine according to claim 8, characterized in that: The transmission mechanism (22) is a synchronous belt transmission mechanism.

10. The sharpening machine according to claim 8, characterized in that: It also includes a speed control box (24) for adjusting the speed of the motor (23).

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