Handheld belt sander

Abstract

The utility model relates to a handheld belt sander, and belongs to the field of polishing equipment. The device comprises a machine frame, a connecting seat and a guide wheel are installed on the machine frame, the connecting seat is installed at the tail end of the robot, the device is structurally characterized by further comprising a driving device, a deviation correcting device, a tensioning device and an abrasive belt, the driving device is installed on the machine frame through the tensioning device, the deviation correcting device is installed on the machine frame, and the abrasive belt is installed on the machine frame. The driving device comprises a driving wheel, a driving motor and a driving base plate, the driving motor and the driving wheel are both arranged on the driving base plate, the driving wheel is driven by the driving motor, the deviation rectifying device comprises a deviation rectifying wheel, and the driving wheel, the guide wheel and the deviation rectifying wheel are in transmission through an abrasive belt.

Description

Technical Field

[0001] This utility model relates to a handheld belt sander, belonging to the field of grinding equipment. Background Technology

[0002] After processing, the workpiece needs to be polished to make its surface smoother. Currently, when polishing small workpieces, a robot is needed to hold the workpiece and place it on the belt sander for polishing. Conversely, when the workpiece is large, a robot is needed to hold the belt sander and place it on the workpiece for polishing. In view of this, a robot handheld belt sander is disclosed in patent document with application number 201920067966.5. However, the handheld belt sander in the above-mentioned prior art often has the sanding belt deviating during operation. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and to provide a handheld belt sander with a reasonable structural design.

[0004] The technical solution adopted by this utility model to solve the above problems is: the handheld belt sander includes a frame, on which a guide wheel is installed. Its structural feature is that it also includes a drive device, a correction device and a sanding belt. The drive device and the correction device are both installed on the frame. The drive device includes a drive wheel and the correction device includes a correction wheel. The drive wheel, the guide wheel and the correction wheel are driven by the sanding belt.

[0005] Furthermore, a connector is mounted on the frame, and the connector is installed at the end of the robot.

[0006] Furthermore, it also includes a tensioning device, through which the drive device is mounted on the frame.

[0007] Furthermore, the driving device also includes a drive motor and a drive base plate, both of which are mounted on the drive base plate, and the drive wheel is driven by the drive motor.

[0008] Furthermore, the tensioning device includes a tensioning sleeve, a tensioning rod, and a tensioning cylinder. The tensioning sleeve is mounted on the drive base plate, and the cylinder barrels of the tensioning rod and the tensioning cylinder are both mounted on the frame. The tensioning sleeve is fitted over the tensioning rod, and the piston rod of the tensioning cylinder is connected to the drive base plate.

[0009] Furthermore, the correction device also includes a correction bracket, a correction swing arm, and a correction shaft. The correction bracket is mounted on the frame, the correction swing arm is mounted on the correction bracket via the correction shaft, the correction wheel is mounted on one end of the correction swing arm, and the other end of the correction swing arm is controlled by an adjustment structure.

[0010] Furthermore, the adjustment structure includes a correction spring, a correction screw, and a correction nut. The correction screw is mounted on the frame and passes through the other end of the correction swing arm. The correction nut is mounted on the correction screw and contacts the correction swing arm. The two ends of the correction spring abut against the frame and the correction swing arm, respectively.

[0011] Furthermore, a locking nut is installed on the straightening screw, and the locking nut is in contact with the straightening nut.

[0012] Furthermore, the outer wall of the drive wheel is provided with grooves.

[0013] Furthermore, the outer diameter of the drive wheel gradually decreases from the middle to both sides.

[0014] Compared with the prior art, the present invention has the following advantages: the handheld belt sander is installed at the end of the robot during use. The position of the belt sander is adjusted by the robot and the belt sander is used to grind large workpieces. The belt sander can be tightened by the tensioning device and the belt sander can be adjusted by the correction device to prevent the belt sander from deviating. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a handheld belt sander according to an embodiment of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of a handheld belt sander according to an embodiment of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the correction device according to an embodiment of the present utility model.

[0018] Figure 4 yes Figure 3 A magnified structural diagram of part A in the diagram.

[0019] Figure 5 This is a three-dimensional structural diagram of the correction device according to an embodiment of the present utility model.

[0020] Figure 6 This is a three-dimensional structural diagram of the driving device according to an embodiment of the present utility model.

[0021] Figure 7 This is a three-dimensional structural diagram of the driving device according to an embodiment of the present utility model.

[0022] Figure 8 This is a schematic diagram of the handheld belt sander in use according to an embodiment of the present invention.

[0023] In the diagram: 1. Frame; 2. Drive unit; 3. Tracking device; 4. Tensioning device; 5. Sanding belt; 6. Robot.

[0024] Connecting seat 11, guide wheel 12

[0025] Drive motor 21, drive wheel 22, drive base plate 23

[0026] 31. Correction bracket; 32. Correction swing arm; 33. Correction shaft; 34. Correction wheel; 35. Correction spring; 36. Correction screw; 37. Correction nut; 38. Locking nut.

[0027] 41. Tensioning sleeve 42. Tensioning rod 43. Tensioning cylinder 44. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0029] Example

[0030] See Figures 1 to 8 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted in this specification are merely for illustrative purposes to aid those skilled in the art and to provide a clear understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is solely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] The handheld belt sander in this embodiment includes a frame 1, a drive device 2, a correction device 3, a tensioning device 4, and a sanding belt 5. The drive device 2 is mounted on the frame 1 via the tensioning device 4, and the correction device 3 is mounted on the frame 1.

[0032] In this embodiment, a connecting seat 11 and a guide wheel 12 are installed on the frame 1, and the connecting seat 11 is installed at the end of the robot 6.

[0033] The driving device 2 in this embodiment includes a driving motor 21, a driving wheel 22 and a driving base plate 23. The driving motor 21 and the driving wheel 22 are both disposed on the driving base plate 23, and the driving wheel 22 is driven by the driving motor 21.

[0034] The tensioning device 4 in this embodiment includes a tensioning sleeve 41, a tensioning rod 42, and a tensioning cylinder 43. The tensioning sleeve 41 is disposed on the drive base plate 23. The cylinders of the tensioning rod 42 and the tensioning cylinder 43 are both disposed on the frame 1. The tensioning sleeve 41 is fitted over the tensioning rod 42. The piston rod of the tensioning cylinder 43 is connected to the drive base plate 23.

[0035] The correction device 3 in this embodiment includes a correction bracket 31, a correction swing arm 32, a correction shaft 33, and a correction wheel 34. The correction bracket 31 is mounted on the frame 1, the correction swing arm 32 is mounted on the correction bracket 31 via the correction shaft 33, the correction wheel 34 is mounted on one end of the correction swing arm 32, and the other end of the correction swing arm 32 is controlled by an adjustment structure.

[0036] The adjustment structure in this embodiment includes a correction spring 35, a correction screw 36, and a correction nut 37. The correction screw 36 is mounted on the frame 1 and passes through the other end of the correction swing arm 32. The correction nut 37 is mounted on the correction screw 36 and contacts the correction swing arm 32. The two ends of the correction spring 35 abut against the frame 1 and the correction swing arm 32, respectively. A locking nut 38 is mounted on the correction screw 36 and contacts the correction nut 37.

[0037] In this embodiment, the drive wheel 22, guide wheel 12, and correction wheel 34 are driven by the sand belt 5. The outer wall of the drive wheel 22 is provided with a groove, and the outer diameter of the drive wheel 22 gradually decreases from the middle to both sides. That is to say, the cross-section of the drive wheel 22 is set with an arc-shaped structure.

[0038] The working method of the handheld belt sander in this embodiment is as follows: the tensioning cylinder 43 drives the drive base plate 23 to move along the tensioning slide bar 42, so that the drive wheel 22 tensions the sanding belt 5. The drive motor 21 drives the drive wheel 22 to rotate, and the drive wheel 22 drives the sanding belt 5 to rotate cyclically on the drive wheel 22, guide wheel 12, and correction wheel 34. The robot 6 places the handheld belt sander at the grinding station and grinds the workpiece with the sanding belt 5.

[0039] During the correction adjustment, the correction nut 37 is turned and brought into contact with the correction swing arm 32, while the correction swing arm 32 swings along the correction shaft 33. When the correction nut 37 separates from the correction swing arm 32, the correction swing arm 32 can be reset by the correction spring 35, thereby realizing the position adjustment of the correction wheel 34. After the adjustment is completed, the locking nut 38 is tightened so that the locking nut 38 comes into contact with the correction nut 37, thereby locking the correction nut 37.

[0040] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined in these claims, all of which should fall within the protection scope of this utility model.

Claims

1. A handheld belt sander, comprising a frame (1) on which guide wheels (12) are mounted, characterized in that: It also includes a drive device (2), a correction device (3) and a sanding belt (5). The drive device (2) and the correction device (3) are both mounted on the frame (1). The drive device (2) includes a drive wheel (22) and the correction device (3) includes a correction wheel (34). The drive wheel (22), the guide wheel (12) and the correction wheel (34) are driven by the sanding belt (5).

2. The handheld belt sander according to claim 1, characterized in that: A connector (11) is mounted on the frame (1), and the connector (11) is mounted on the end of the robot (6).

3. The handheld belt sander according to claim 1, characterized in that: It also includes a tensioning device (4), and the drive device (2) is mounted on the frame (1) via the tensioning device (4).

4. The handheld belt sander according to claim 1, characterized in that: The driving device (2) further includes a driving motor (21) and a driving base plate (23). The driving motor (21) and the driving wheel (22) are both mounted on the driving base plate (23), and the driving wheel (22) is driven by the driving motor (21).

5. The handheld belt sander according to claim 3, characterized in that: The tensioning device (4) includes a tensioning sleeve (41), a tensioning rod (42), and a tensioning cylinder (43). The tensioning sleeve (41) is mounted on the drive base plate (23). The cylinders of the tensioning rod (42) and the tensioning cylinder (43) are mounted on the frame (1). The tensioning sleeve (41) is fitted over the tensioning rod (42). The piston rod of the tensioning cylinder (43) is connected to the drive base plate (23).

6. The handheld belt sander according to claim 1, characterized in that: The correction device (3) further includes a correction bracket (31), a correction swing arm (32), and a correction shaft (33). The correction bracket (31) is mounted on the frame (1). The correction swing arm (32) is mounted on the correction bracket (31) via the correction shaft (33). The correction wheel (34) is mounted on one end of the correction swing arm (32). The other end of the correction swing arm (32) is controlled by an adjustment structure.

7. The handheld belt sander according to claim 6, characterized in that: The adjustment structure includes a correction spring (35), a correction screw (36), and a correction nut (37). The correction screw (36) is mounted on the frame (1) and passes through the other end of the correction screw (36) and the correction swing arm (32). The correction nut (37) is mounted on the correction screw (36) and contacts the correction swing arm (32). The two ends of the correction spring (35) abut against the frame (1) and the correction swing arm (32) respectively.

8. The handheld belt sander according to claim 7, characterized in that: A locking nut (38) is installed on the straightening screw (36), and the locking nut (38) is in contact with the straightening nut (37).

9. The handheld belt sander according to claim 1, characterized in that: The outer wall of the drive wheel (22) is provided with a groove.

10. The handheld belt sander according to claim 1, characterized in that: The outer diameter of the drive wheel (22) gradually decreases from the middle to both sides.

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