Abrasive belt sander for narrow cavities

Abstract

This utility model discloses a belt sander specifically for grinding narrow cavities, specifically relating to the field of robotic automated grinding technology. It includes a fixed mounting plate, on which a belt sander drive wheel is rotatably connected. A guide wheel is rotatably connected to the surface of the fixed mounting plate, and two guide wheels are symmetrically rotatably connected to the surface of the fixed mounting plate. A sanding gun rod is fixedly connected to the front surface of the fixed mounting plate. A sanding belt body is sleeved and connected to the outer sides of the belt sander drive wheel, guide wheel, and sanding gun rod, passing between the two guide wheels. A tensioning mechanism for adjusting the tension of the sanding belt body is provided on the surface of the fixed mounting plate. This utility model solves the technical problems of belt sanders being large, inflexible, and unable to process narrow, deep cavities in the automated grinding industry. Simultaneously, the overall structure of the device is simplified and lightweight, suitable for handheld processing by small and medium-sized robotic arms or direct installation at the end of a constant force mechanism, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of robotic automated grinding technology, and more specifically, to a special belt sander for grinding narrow cavities. Background Technology

[0002] Currently, most belt sanders used in the industry are powered by pneumatic or small AC motors. The grinding mechanism is complex and bulky, and the correction mechanism relies on blocking the sides of the sander belt to ensure its stability. Existing belt sanders of this type are large in size and complex to install and control, which greatly limits their practicality, whether installed at the end of a robotic arm or a floating mechanism. Their mechanisms are poorly designed, relying heavily on baffles for belt alignment, and the alignment wheel design is inadequate, making the belt prone to slipping off under stress during grinding, resulting in poor stability. The grinding rod structure is complex and bulky, making it unsuitable for processing narrow cavities or shielded areas.

[0003] Therefore, a special belt sander for grinding narrow cavities was proposed to address the above problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a special belt sander for grinding narrow cavities, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a special belt sander for grinding narrow cavities, including a fixed mounting plate base. A belt sander drive wheel is rotatably connected to the fixed mounting plate base. A guide wheel is rotatably connected to the surface of the fixed mounting plate base and located below the belt sander drive wheel. Two guide wheels are symmetrically rotatably connected to the surface of the fixed mounting plate base and located below the belt sander drive wheel and guide wheel. A sanding gun rod is fixedly connected to the front surface of the fixed mounting plate base and located below the two guide wheels. A sanding belt body is sleeved and connected to the outer side of the belt sander drive wheel, guide wheel, and sanding gun rod, and the sanding belt body passes between the two guide wheels. A tensioning mechanism for adjusting the tension of the sanding belt body is provided on the surface of the fixed mounting plate base.

[0006] Preferably, the tensioning mechanism includes a sand tensioning mechanism swing arm, a sand belt tensioning wheel, and a tensioning cylinder. A sand tensioning mechanism swing arm is rotatably connected to the front surface of the fixed mounting plate. A correction wheel is rotatably connected to one end of the sand tensioning mechanism swing arm. A tensioning cylinder is rotatably connected to the front surface of the fixed mounting plate. The output end of the tensioning cylinder is rotatably connected to the other end of the sand tensioning mechanism swing arm.

[0007] Preferably, the swing arm of the sand tensioning mechanism is V-shaped, and the sand belt tensioning wheel is located inside the sand belt body.

[0008] Preferably, the rear side wall of the fixed mounting plate is provided with a sander power servo motor that drives the sander drive wheel, and the sander power servo motor is fixedly mounted on the rear side wall of the fixed mounting plate by bolts.

[0009] Preferably, the surface of the fixed mounting plate is provided with multiple threaded mounting holes, and the fixed mounting plate is fixedly connected to the worktable by bolts and the cooperation of the multiple threaded mounting holes.

[0010] Preferably, the bottom end of the sand gun rod is rotatably connected to a connecting shaft, and three first processing contact areas are fixedly sleeved on the outside of the connecting shaft. A second processing contact area is fixedly provided on the side wall of the sand gun rod. The bottom outer wall of the first processing contact area and the surface of the second processing contact area are both in contact with the inner side of the sand belt body.

[0011] The technical effects and advantages of this utility model are as follows: Compared with existing technologies, this special belt sander for grinding narrow cavities can drive the sander belt body to penetrate into deep cavities and shielded areas at different depths by setting the sander gun rod, thus avoiding interference. This utility model solves the technical problems of belt sanders in the automated grinding industry being large, inflexible, and unable to process narrow and deep cavity areas. At the same time, the overall structure of the device is simple and lightweight, and it can be used for handheld processing by small and medium-sized robotic arms or directly installed at the end of a constant force mechanism, making it highly practical. Attached Figure Description

[0012] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0013] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0014] The attached figures are labeled as follows: 1. Servo motor for the belt sander; 2. Drive wheel for the belt sander; 3. Tensioning mechanism swing arm; 4. Belt tensioning wheel; 5. Tensioning cylinder; 6. Straightening wheel; 7. Belt body; 8. Guide wheel; 9. Fixed mounting plate; 10. Threaded mounting hole; 11. Sanding gun rod; 12. Connecting shaft; 13. First processing contact area; 14. Second processing contact area. Detailed Implementation

[0015] 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.

[0016] Example 1 As attached Figures 1 to 2 The belt sander shown includes a fixed mounting plate 9, on which a belt sander drive wheel 2 is rotatably connected. A belt sander power servo motor 1, which drives the belt sander drive wheel 2, is provided on the rear side wall of the fixed mounting plate 9 and is fixedly mounted on the rear side wall of the fixed mounting plate 9 with bolts. A guide wheel 6 is rotatably connected to the surface of the fixed mounting plate 9 below the belt sander drive wheel 2. Two guide wheels 8 are symmetrically rotatably connected to the surface of the fixed mounting plate 9 below the belt sander drive wheel 2 and the guide wheel 6. A sanding gun rod 11 is fixedly connected to the front surface of the fixed mounting plate 9 below the two guide wheels 8. A sanding belt body 7 is sleeved and connected to the outer side of the belt sander drive wheel 2, the guide wheel 6, and the sanding gun rod 11, and the sanding belt body 7 passes between the two guide wheels 8. A tensioning mechanism for adjusting the tension of the sanding belt body 7 is provided on the surface of the fixed mounting plate 9.

[0017] In use, the rotating drive wheel 2 of the belt sander drives the sanding belt body 7 to rotate, and then the sanding belt body 7 drives the correction wheel 6 and the two guide wheels 8 to rotate. The guide wheels 8 reduce the angle of the extended sanding belt body 7, allowing the sanding belt body 7 to reach deep cavities or shielded areas. At the same time, the sanding gun rod 11 allows the sanding gun rod 11 and the sanding belt body 7 located outside the sanding gun rod 11 to be inserted into the narrow cavity. Then, the rotation of the sanding belt body 7 and the sanding gun rod 11 work together to grind the inside of the narrow cavity.

[0018] Example 2 Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 2 As shown below, see details: In a preferred embodiment, the tensioning mechanism includes a sand tensioning mechanism swing arm 3, a sanding belt tensioning wheel 4, and a tensioning cylinder 5. A sand tensioning mechanism swing arm 3 is rotatably connected to the front surface of the fixed mounting plate 9. A correction wheel 6 is rotatably connected to one end of the sand tensioning mechanism swing arm 3. A tensioning cylinder 5 is rotatably connected to the front surface of the fixed mounting plate 9. The output end of the tensioning cylinder 5 is rotatably connected to the other end of the sand tensioning mechanism swing arm 3. The sand tensioning mechanism swing arm 3 is V-shaped, and the sanding belt tensioning wheel 4 is located inside the sanding belt body 7. In use, one end of the sand tensioning mechanism swing arm 3 can be moved by pushing it through the output end of the tensioning cylinder 5. Then, the sand tensioning mechanism swing arm 3 rotates at the point rotatably connected to the fixed mounting plate 9, which causes the sanding belt tensioning wheel 4, which is rotatably connected to the other end of the sand tensioning mechanism swing arm 3, to move closer to the inside of the sanding belt body 7. At this time, the sanding belt body 7 is tensioned as the sanding belt tensioning wheel 4 moves, thereby realizing the tension adjustment of the sanding belt body 7.

[0019] In a preferred embodiment, a plurality of threaded mounting holes 10 are provided on the surface of the fixed mounting plate base 9, and the fixed mounting plate base 9 can be fixedly connected to the worktable by means of bolts and the cooperation of the plurality of threaded mounting holes 10.

[0020] In a preferred embodiment, a connecting shaft 12 is rotatably connected to the bottom end of the sanding gun rod 11. Three first processing contact areas 13 are fixedly sleeved on the outside of the connecting shaft 12, and a second processing contact area 14 is fixedly provided on the side wall of the sanding gun rod 11. Finally, the outer side wall of the bottom end of the first processing contact area 13 and the surface of the second processing contact area 14 are in contact with the inner side of the sanding belt body 7. When the sanding gun rod 11 is inserted into the narrow cavity, the sanding belt body 7 can be supported by the first processing contact areas 13 and the second processing contact areas 14, thereby polishing the curved or flat surface inserted into the narrow cavity.

[0021] In this embodiment, the belt sander servo motor 1 is a commercially available device known to those skilled in the art. It can be customized or selected according to actual needs. Here, we are only using it without making any structural or functional improvements, so we will not go into details here.

[0022] The working process of this utility model is as follows: First, the rotating sander drive wheel 2 drives the sander body 7 to rotate. Then, the sander body 7 drives the correction wheel 6 and two guide wheels 8 to rotate. The guide wheels 8 reduce the angle of the extended sander body 7, allowing the sander body 7 to reach deep cavities or shielded areas. At the same time, through the setting of the sander rod 11, the sander rod 11 and the sander body 7 set on the outside of the sander rod 11 can be extended into the narrow cavity. Then, the sander body 7 and the sander rod 11 work together to grind the inside of the narrow cavity. Meanwhile, when the sanding gun rod 11 is inserted into the narrow cavity, the sanding belt body 7 can be supported by the first processing contact area 13 and the second processing contact area 14, thereby polishing the curved or flat surface inserted into the narrow cavity. This utility model solves the technical problem that the sanding belt machine in the automated grinding industry is large in size, inflexible, and unable to process narrow and deep cavity areas. At the same time, the overall structure of the device is simple and lightweight, and it can be used for handheld processing by small and medium-sized robotic arms or directly installed at the end of the constant force mechanism, making it highly practical. The above is the working principle of the special sanding belt machine for narrow cavity grinding.

Claims

1. A belt sander for grinding narrow cavities, including a fixed mounting plate (9), characterized in that: The fixed mounting plate (9) is rotatably connected to the belt sander drive wheel (2). The fixed mounting plate (9) is rotatably connected to the surface of the belt sander drive wheel (2) and below it. The fixed mounting plate (9) is symmetrically connected to two guide wheels (8) below the belt sander drive wheel (2) and the guide wheel (6). The fixed mounting plate (9) is fixedly connected to the front surface of the fixed mounting plate (9) and below the two guide wheels (8). The belt sander drive wheel (2), the guide wheel (6), and the belt sander rod (11) are all sleeved together with a belt sander body (7). The belt sander body (7) passes between the two guide wheels (8). The fixed mounting plate (9) is provided with a tensioning mechanism for adjusting the tension of the belt sander body (7).

2. The belt sander for grinding narrow cavities according to claim 1, characterized in that: The tensioning mechanism includes a sand tensioning mechanism swing arm (3), a sand belt tensioning wheel (4), and a tensioning cylinder (5). A sand tensioning mechanism swing arm (3) is rotatably connected to the front surface of the fixed mounting plate (9). A correction wheel (6) is rotatably connected to one end of the sand tensioning mechanism swing arm (3). A tensioning cylinder (5) is rotatably connected to the front surface of the fixed mounting plate (9). The output end of the tensioning cylinder (5) is rotatably connected to the other end of the sand tensioning mechanism swing arm (3).

3. The belt sander for grinding narrow cavities according to claim 2, characterized in that: The swing arm (3) of the sand tensioning mechanism is V-shaped, and the sand belt tensioning wheel (4) is located inside the sand belt body (7).

4. The belt sander for grinding narrow cavities according to claim 1, characterized in that: The rear side wall of the fixed mounting plate (9) is provided with a sanding machine power servo motor (1) that drives the sanding machine drive wheel (2), and the sanding machine power servo motor (1) is fixedly mounted on the rear side wall of the fixed mounting plate (9) by bolts.

5. The belt sander for grinding narrow cavities according to claim 1, characterized in that: The fixed mounting plate (9) has multiple threaded mounting holes (10) on its surface. The fixed mounting plate (9) is fixedly connected to the workbench by bolts and the multiple threaded mounting holes (10).

6. The belt sander for grinding narrow cavities according to claim 1, characterized in that: The bottom end of the sand gun rod (11) is rotatably connected to a connecting shaft (12). Three first processing contact areas (13) are fixedly sleeved on the outside of the connecting shaft (12). A second processing contact area (14) is fixedly provided on the side wall of the sand gun rod (11). The bottom outer wall of the first processing contact area (13) and the surface of the second processing contact area (14) are both in contact with the inner side of the sand belt body (7).

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