Handheld belt sander and working method

Abstract

The invention relates to a handheld belt sander and a working method, and belongs to the field of grinding equipment. The device comprises a machine frame, a connecting base and a guide wheel are installed on the machine frame, the connecting base 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 driving device. 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] The invention relates to a handheld sanding machine and a working method, belonging to the field of grinding equipment. Background Art

[0002] After processing, the surface of the workpiece needs to be polished to make the surface of the workpiece smoother. Currently, when polishing a smaller workpiece, a robot is required to hold the workpiece and place the workpiece on a belt sander for polishing. Conversely, when the workpiece is large, a robot is required to hold a belt sander and place the belt sander on the workpiece for polishing. In view of this, a robot handheld belt sander is disclosed in the patent document with application number 201920067966.5. The sanding belt of the handheld belt sander in the above-mentioned prior art often deviates during operation. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a handheld sanding machine and a working method with a reasonable structural design.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the handheld sanding machine includes a frame, and a guide wheel is installed on the frame. Its structural characteristics are: it also includes a driving device, a correcting device and a sanding belt, and the driving device and the correcting device are both installed on the frame. The driving device includes a driving wheel, and the correcting device includes a correcting wheel. The driving wheel, guide wheel and correcting wheel are driven by the sanding belt.

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

[0006] Furthermore, it also includes a tensioning device, and the driving device is installed on the frame through the tensioning device.

[0007] Furthermore, the driving device further comprises a driving motor and a driving substrate, the driving motor and the driving wheel are both arranged on the driving substrate, and the driving wheel is driven by the driving motor.

[0008] Furthermore, the tensioning device includes a tensioning sleeve, a tensioning slide rod and a tensioning cylinder, the tensioning sleeve is arranged on the driving substrate, the tensioning slide rod and the cylinder barrel of the tensioning cylinder are both arranged on the frame, the tensioning sleeve is sleeved outside the tensioning slide rod, and the piston rod of the tensioning cylinder is connected to the driving substrate.

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

[0010] Furthermore, the adjustment structure includes a correcting spring, a correcting screw and a correcting nut, the correcting screw is installed on the frame, and the correcting screw penetrates the other end of the correcting swing arm, the correcting nut is installed on the correcting screw, and the correcting nut contacts the correcting swing arm, and the two ends of the correcting spring are respectively abutted against the frame and the correcting swing arm.

[0011] Furthermore, a locking nut is installed on the deviation-correcting screw rod, and the locking nut is in contact with the deviation-correcting nut.

[0012] Furthermore, the outer wall of the driving wheel is provided with a groove.

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

[0014] Furthermore, another technical purpose of the present invention is to provide a working method of a handheld sanding machine.

[0015] The above technical objectives of the present invention are achieved through the following technical solutions.

[0016] A working method of a handheld belt sander is characterized in that: the working method is as follows: a driving substrate moves so that a driving wheel tightens the belt, the driving wheel rotates to drive the belt to circulate on the driving wheel, a guide wheel, and a deviation correction wheel, a robot places the handheld belt sander at a grinding station, and grinds the workpiece with the belt.

[0017] Furthermore, during the correction adjustment, the correction nut is turned to make the correction nut contact with the correction swing arm, and the correction swing arm is swung along the correction shaft. When the correction nut is separated from the correction swing arm, the correction swing arm can be reset by the correction spring, thereby realizing the position adjustment of the correction wheel. After the adjustment is completed, the locking nut is tightened to make the locking nut contact with the correction nut, thereby locking the correction nut.

[0018] Compared with the prior art, the present invention has the following advantages: the handheld belt sander is installed at the end of the robot when in use, the position of the belt sander is adjusted by the robot and the belt sander is used to grind larger workpieces, the belt sander can be tightened by the set tensioning device, and the belt sander can be corrected and adjusted by the set deviation correction device to prevent the belt from deviating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a handheld belt sander according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of a handheld belt sander according to an embodiment of the present invention.

[0021] Figure 3It is a schematic diagram of the three-dimensional structure of the deviation correction device according to an embodiment of the present invention.

[0022] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A in FIG.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the deviation correction device according to an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving device of an embodiment of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the driving device of an embodiment of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the handheld belt sander in use according to an embodiment of the present invention.

[0027] In the figure: frame 1, driving device 2, deviation correction device 3, tensioning device 4, sanding belt 5, robot 6, Connecting seat 11, guide wheel 12, Drive motor 21, drive wheel 22, drive substrate 23, The deflection correction bracket 31, the deflection correction swing arm 32, the deflection correction shaft 33, the deflection correction wheel 34, the deflection correction spring 35, the deflection correction screw 36, the deflection correction nut 37, the locking nut 38, A tensioning sleeve 41 , a tensioning slide rod 42 , and a tensioning cylinder 43 . DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0029] Example

[0030] See also Figures 1 to 8 As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] The handheld belt sander in this embodiment includes a frame 1, a driving device 2, a deviation correcting device 3, a tensioning device 4 and a sanding belt 5. The driving device 2 is installed on the frame 1 through the tensioning device 4, and the deviation correcting device 3 is installed on the frame 1.

[0032] A connecting seat 11 and a guide wheel 12 are installed on the frame 1 in this embodiment, 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 substrate 23 . The driving motor 21 and the driving wheel 22 are both arranged on the driving substrate 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 slide rod 42 and a tensioning cylinder 43. The tensioning sleeve 41 is arranged on the driving substrate 23. The cylinder barrels of the tensioning slide rod 42 and the tensioning cylinder 43 are both arranged on the frame 1. The tensioning sleeve 41 is sleeved on the outside of the tensioning slide rod 42, and the piston rod of the tensioning cylinder 43 is connected to the driving substrate 23.

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

[0036] The adjustment structure in this embodiment includes a correcting spring 35, a correcting screw 36 and a correcting nut 37. The correcting screw 36 is installed on the frame 1, and the correcting screw 36 penetrates the other end of the correcting swing arm 32. The correcting nut 37 is installed on the correcting screw 36, and the correcting nut 37 contacts the correcting swing arm 32. The two ends of the correcting spring 35 are respectively in contact with the frame 1 and the correcting swing arm 32. A locking nut 38 is installed on the correcting screw 36, and the locking nut 38 contacts the correcting nut 37.

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

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

[0039] During the deviation correction adjustment, the deviation correction nut 37 is turned to make the deviation correction nut 37 contact with the deviation correction swing arm 32, and the deviation correction swing arm 32 is swung along the deviation correction shaft 33. When the deviation correction nut 37 is separated from the deviation correction swing arm 32, the deviation correction swing arm 32 can be reset by the deviation correction spring 35, so that the position of the deviation correction wheel 34 can be adjusted. After the adjustment is completed, tighten the locking nut 38 so that the locking nut 38 contacts with the deviation correction nut 37, and then the deviation correction nut 37 can be locked.

[0040] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A handheld belt sander, comprising a frame (1), a connecting seat (11) and a guide wheel (12) being mounted on the frame (1), the connecting seat (11) being mounted at the end of a robot (6), characterized in that: The invention also comprises a driving device (2), a deviation-correcting device (3), a tensioning device (4) and an abrasive belt (5); the driving device (2) is mounted on the frame (1) via the tensioning device (4); the deviation-correcting device (3) is mounted on the frame (1); the driving device (2) comprises a driving wheel (22); the deviation-correcting device (3) comprises a deviation-correcting wheel (34); and the driving wheel (22), the guide wheel (12) and the deviation-correcting wheel (34) are driven by the abrasive belt (5).

2. The handheld belt sander according to claim 1, characterized in that: The driving device (2) further comprises a driving motor (21) and a driving substrate (23); the driving motor (21) and the driving wheel (22) are both arranged on the driving substrate (23), and the driving wheel (22) is driven by the driving motor (21).

3. The handheld belt sander according to claim 1, characterized in that: The tensioning device (4) comprises a tensioning sleeve (41), a tensioning slide rod (42) and a tensioning cylinder (43); the tensioning sleeve (41) is arranged on a driving substrate (23); the cylinder barrels of the tensioning slide rod (42) and the tensioning cylinder (43) are both arranged on a frame (1); the tensioning sleeve (41) is sleeved outside the tensioning slide rod (42); and the piston rod of the tensioning cylinder (43) is connected to the driving substrate (23).

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

5. The handheld belt sander according to claim 4, characterized in that: The adjustment structure comprises a deflection correction spring (35), a deflection correction screw (36) and a deflection correction nut (37); the deflection correction screw (36) is mounted on the frame (1), and the deflection correction screw (36) penetrates the other end of the deflection correction swing arm (32); the deflection correction nut (37) is mounted on the deflection correction screw (36), and the deflection correction nut (37) contacts the deflection correction swing arm (32); and the two ends of the deflection correction spring (35) are respectively in contact with the frame (1) and the deflection correction swing arm (32).

6. The handheld belt sander according to claim 5, characterized in that: A locking nut (38) is mounted on the deflection correcting screw rod (36), and the locking nut (38) is in contact with the deflection correcting nut (37).

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

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

9. A method for operating a hand-held belt sander according to any one of claims 1 to 8, characterized in that: The working method is as follows: the driving substrate (23) moves so that the driving wheel (22) tightens the sanding belt (5); the driving wheel (22) rotates to drive the sanding belt (5) to circulate on the driving wheel (22), the guide wheel (12), and the deviation correction wheel (34); the robot (6) places the handheld sanding belt machine at the sanding station and sands the workpiece with the sanding belt (5).

10. The working method of the handheld belt sander according to claim 9, characterized in that: During the deflection correction adjustment, the deflection correction nut (37) is turned to make the deflection correction nut (37) contact the deflection correction swing arm (32), and at the same time, the deflection correction swing arm (32) is swung along the deflection correction shaft (33). When the deflection correction nut (37) is separated from the deflection correction swing arm (32), the deflection correction swing arm (32) can be reset by the deflection correction spring (35), thereby realizing the position adjustment of the deflection correction wheel (34). After the adjustment is completed, the locking nut (38) is tightened to make the locking nut (38) contact the deflection correction nut (37), thereby locking the deflection correction nut (37).

Images