A workpiece surface sandblasting robot

Abstract

The present invention discloses a workpiece surface sandblasting robot, which relates to the field of surface treatment technology and includes a sandblasting device and a moving device. The sandblasting device is used to perform sandblasting on the surface of a workpiece fixed on the moving device, and the moving device is used to drive the workpiece to move vertically relative to the sandblasting device. The moving device includes a column, a moving module, a buffer and cooling module, and a clamping module. The moving module is provided below the column, the clamping module is provided below the moving module, and the buffer and cooling module is provided on the column. The present invention provides a buffer and cooling module, utilizes liquid to pressurize and support the inner wall of the tubular workpiece, and absorbs the heat generated during the sandblasting process, so that some thin-walled tubular workpieces can avoid deformation and shedding of the inner wall coating.

Description

Technical Field

[0001] The invention belongs to the technical field of surface treatment, and in particular relates to a workpiece surface sandblasting robot. Background Art

[0002] The process of using the impact of high-speed sand flow to clean and roughen the surface of the substrate. Compressed air is used as the power to form a high-speed jet beam to spray the material (copper ore sand, quartz sand, corundum, iron sand, Hainan sand) at high speed onto the surface of the workpiece to be processed, so that the appearance or shape of the workpiece surface changes. Due to the impact and cutting effect of the abrasive on the workpiece surface, the surface of the workpiece obtains a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, thereby improving the fatigue resistance of the workpiece, increasing the adhesion between it and the coating, extending the durability of the coating, and also facilitating the leveling and decoration of the coating. When using a sandblasting robot to sandblast some tubular workpieces, some tubular workpieces with smaller thickness may cause the inner wall of the workpiece to deform due to the impact of the sand particles. At the same time, the heat generated by the impact of the sand particles will also cause the temperature of the workpiece to rise. Some workpieces with painted inner walls may cause the paint to fall off due to the temperature increase. Summary of the Invention

[0003] The purpose of the present invention is to provide a workpiece surface sandblasting robot. Through the workpiece surface sandblasting robot, the problem that the existing workpiece surface sandblasting robot may cause the inner wall of the workpiece to deform, and the heat generated by the impact of sand particles may also cause the temperature of the workpiece to rise. Some workpieces with painted inner walls may cause the paint to fall off due to the increase in temperature.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a workpiece surface sandblasting robot, comprising a sandblasting device and a moving device, wherein the sandblasting device is used to sandblast the surface of a workpiece fixed on the moving device, and the moving device is used to drive the workpiece to move vertically relative to the sandblasting device;

[0006] The mobile device includes a column, a mobile module, a buffer and cooling module, and a clamping module. The mobile module is provided below the column, the clamping module is provided below the mobile module, and the buffer and cooling module is provided on the column.

[0007] The buffer and cooling module includes a sealing ring, a pressure ring, a linear reciprocating motion mechanism, and a water storage cylinder. The sealing ring is coaxially fixed on the column, and a pressure ring is coaxially sleeved on the column above the sealing ring. A water storage cylinder is coaxially fixed to the surface of the pressure ring away from the sealing ring. An injection pipe and a return pipe are penetrated by the pressure ring in the water storage cylinder. Both the injection pipe and the return pipe are provided with control valves, and the control valves are used to control the on-off of the injection pipe and the return pipe; the linear reciprocating motion mechanism is used to drive the pressure ring to perform linear reciprocating motion on the column.

[0008] Furthermore, the sandblasting device includes a gantry, a rotating module, a robotic arm, and a sandblasting gun. The rotating module is installed on the gantry, one end of the robotic arm is connected to the rotating module, and the other end of the robotic arm is equipped with a sandblasting gun.

[0009] Furthermore, the rotation module includes a fixed shaft, an outer gear ring, and a first driving mechanism. The fixed shaft is fixed on the gantry, and the outer gear ring is coaxially and rotatably mounted on the fixed shaft. The robotic arm is connected to the outer gear ring, and the first driving mechanism is used to drive the outer gear ring to rotate.

[0010] Furthermore, the moving module includes a cam, a camshaft, and a second driving mechanism. Several cams are arranged around the central axis of the column. A camshaft is coaxially fixed on each cam. The camshafts are rotatably connected to the column. The camshafts are transmission-connected to the second driving mechanism. The second driving mechanism is used to synchronously drive multiple cams to rotate synchronously.

[0011] Furthermore, the cam is made of rubber.

[0012] Furthermore, there are two cams, and the two cams are symmetrically arranged. The second driving mechanism includes a crank-connecting rod structure, a slider, a slide rail, and a first hydraulic rod. The slide rail is arranged between the two cams. Two sliders are slidably installed in the slide rail. Each of the sliders is connected to a first hydraulic rod. The first hydraulic rod is used to drive the slider to reciprocate in the slide rail. Each of the sliders is connected to the corresponding camshaft through a crank-connecting rod structure.

[0013] Furthermore, the clamping module includes an arc-shaped clamping plate, a second hydraulic rod, and a positioning plate. The two arc-shaped clamping plates are symmetrically arranged on both sides of the positioning plate. The positioning plate is coaxially fixedly connected to the column. Each arc-shaped clamping plate is connected to a second hydraulic rod, and the second hydraulic rod is used to drive the arc-shaped clamping plate to perform reciprocating motion relative to the positioning plate.

[0014] Furthermore, the linear reciprocating motion mechanism includes a third hydraulic rod and a connecting frame. The third hydraulic rod is coaxially fixed on the top of the column, and the third hydraulic rod is connected to the pressure ring through the connecting frame.

[0015] Furthermore, the top height of the return pipe is higher than the top height of the injection pipe; and the control valve is a solenoid valve.

[0016] The present invention has the following beneficial effects:

[0017] The present invention provides a buffer and cooling module, utilizes liquid to pressurize and support the inner wall of the tubular workpiece, and absorbs the heat generated during the sandblasting process, so that some thin-walled tubular workpieces can avoid deformation and shedding of the inner wall coating.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a workpiece surface sandblasting robot;

[0021] Figure 2 Schematic diagram of the buffer and cooling module structure of a workpiece surface sandblasting robot Figure 1 ;

[0022] Figure 3 Schematic diagram of the buffer and cooling module structure of a workpiece surface sandblasting robot Figure 2 ;

[0023] Figure 4 A cross-sectional diagram of the buffer and cooling module of a workpiece surface sandblasting robot Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the working state of the buffer and cooling module of a workpiece surface sandblasting robot;

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1. Column; 2. Sealing ring; 3. Pressure ring; 4. Water storage cylinder; 5. Water injection pipe; 6. Return pipe; 7. Third hydraulic rod; 8. Connecting frame; 9. Positioning plate; 10. Cam; 11. Crank-connecting rod structure; 12. Slider; 13. First hydraulic rod; 14. Slide rail; 15. Arc splint; 16. Second hydraulic rod; 17. Door frame; 18. Fixed shaft; 19. External gear ring; 20. Robotic arm; 21. Sandblasting gun; 22. Motor; 23. Gear. DETAILED DESCRIPTION

[0027] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] See also Figure 1-5 The present invention is a workpiece surface sandblasting robot, comprising a sandblasting device and a moving device, wherein the sandblasting device is used to sandblast the surface of a workpiece fixed on the moving device, and the moving device is used to drive the workpiece to move vertically relative to the sandblasting device;

[0029] The mobile device includes a column 1, a mobile module, a buffer and cooling module, and a clamping module. The mobile module is provided below the column 1, the clamping module is provided below the mobile module, and the buffer and cooling module is provided on the column 1.

[0030] The buffering and cooling module includes a sealing ring 2, a pressure ring 3, a linear reciprocating motion mechanism, and a water storage cylinder 4. The sealing ring 2 is coaxially fixed on the column 1, and a pressure ring 3 is coaxially sleeved on the column 1 above the sealing ring 2. A water storage cylinder 4 is coaxially fixed on the surface of the pressure ring 3 away from the sealing ring 2. An injection pipe 5 and a return pipe 6 are penetrated by the pressure ring 3 in the water storage cylinder 4. Both the injection pipe 5 and the return pipe 6 are provided with control valves, and the control valves are used to control the on and off of the injection pipe 5 and the return pipe 6; the linear reciprocating motion mechanism is used to drive the pressure ring 3 to perform linear reciprocating motion on the column 1.

[0031] The sandblasting device includes a gantry 17, a rotating module, a robotic arm 20, and a sandblasting gun 21. The rotating module is mounted on the gantry 17, with one end of the robotic arm 20 connected to the rotating module and the other end of the robotic arm 20 equipped with the sandblasting gun 21. The rotating module includes a fixed shaft 18, an outer ring gear 19, and a first drive mechanism. The fixed shaft 18 is fixed to the gantry 17, with the outer ring gear 19 coaxially and rotatably mounted on the fixed shaft 18. The robotic arm 20 is connected to the outer ring gear 19, and the first drive mechanism is used to drive the outer ring gear 19 in rotation. The first drive mechanism includes a motor 22 and a gear 23. The gear 23 meshes with the outer ring gear 19 and is in driving connection with the motor 22.

[0032] The moving module includes a cam 10, a cam 10 shaft, and a second drive mechanism. Several cams 10 are arranged around the central axis of the cylinder 1. Each cam 10 has a cam 10 shaft coaxially fixed to it. Each cam 10 shaft is rotatably connected to the cylinder 1. Each cam 10 shaft is in transmission connection with the second drive mechanism, which is used to synchronously drive the multiple cams 10 to rotate. During use, as the cam 10 rotates, its protruding portion compresses against the inner wall of the tubular workpiece. The rubber material provides greater friction during this compression process, and as the cam 10 continues to rotate, it pushes the tubular workpiece upward. The cam 10 is made of rubber.

[0033] There are two cams 10, and the two cams 10 are symmetrically arranged. The second driving mechanism includes a crank-connecting rod structure 11, a slider 12, a slide rail 14, and a first hydraulic rod 13. The slide rail 14 is arranged between the two cams 10. Two sliders 12 are slidably installed in the slide rail 14. Each slider 12 is connected to a first hydraulic rod 13. The first hydraulic rod 13 is used to drive the slider 12 to reciprocate in the slide rail 14. Each slider 12 is connected to the corresponding camshaft through a crank-connecting rod structure 11.

[0034] The linear reciprocating motion mechanism includes a third hydraulic rod 7 and a connecting frame 8 . The third hydraulic rod 7 is coaxially fixed on the top of the column 1 . The third hydraulic rod 7 is connected to the pressure ring 3 through the connecting frame 8 .

[0035] The top of the return pipe 6 is higher than the top of the injection pipe 5; the control valve is a solenoid valve.

[0036] When the present invention is in use, in the initial state, the control valves on the return pipe 6 and the water injection pipe 5 are all in the closed state, at this time, water is injected into the water storage cylinder 4, and then as shown in the attached Figure 5As shown, the tubular workpiece is passed through the positioning disk 9 so that the tubular workpiece and the column 1 are coaxially arranged. At this time, the moving module is started, and the moving module pushes the tubular workpiece up until it passes over the sealing ring 2 and the pressure ring 3. In this way, the sealing ring 2, the pressure ring 3, the tubular workpiece and the column 1 together form an annular sealing chamber. Then, the control valves on the return pipe 6 and the water injection pipe 5 are opened, and the water in the water storage cylinder 4 will flow into the annular sealing chamber from the water injection pipe 5, and the air in the annular sealing chamber will be discharged from the return pipe 6. When the water fills the annular sealing chamber, the control valve is closed at this time, and then the linear reciprocating motion mechanism is started to push the pressure ring 3 down a certain distance. The pressure ring 3 squeezes the water in the annular sealing chamber, so that the water The pressure rises, and then the sandblasting device is started to sandblast the surface of the tubular workpiece corresponding to the annular sealing cavity. In this way, during sandblasting, the water stored in the annular sealing cavity can support and buffer the inner wall of the tubular workpiece to prevent it from being deformed due to the impact of sand particles. At the same time, the water can also absorb the heat generated by the impact. When the surface of this part of the tubular workpiece is sandblasted, the control valve on the return pipe 6 is opened at this time, and then the linear reciprocating motion mechanism is started to push the pressure ring 3 downward, so that the pressure ring 3 squeezes the water in the annular sealing cavity back to the water storage cavity through the return pipe 6, and then the pressure ring 3 is reset, thus realizing the reuse of water. Then the above steps are repeated until the sandblasting is completed.

[0037] A specific application of this embodiment is as follows: the clamping module includes an arc-shaped clamping plate 15, a second hydraulic rod 16, and a positioning disk 9. The two arc-shaped clamping plates 15 are symmetrically arranged on both sides of the positioning disk 9. The positioning disk 9 is coaxially fixedly connected to the column 1. Each arc-shaped clamping plate 15 is connected to a second hydraulic rod 16. The second hydraulic rod 16 is used to drive the arc-shaped clamping plate 15 to perform reciprocating motion relative to the positioning disk 9. The reason for providing this clamping module is that when the cam 10 of the moving module pushes the tubular workpiece upward, when the protruding part of the cam 10 leaves the surface of the tubular workpiece, the tubular workpiece will still move downward. Therefore, it is necessary to use the two arc-shaped clamping plates 15 in the clamping module to keep the tubular workpiece in a clamped state in advance to prevent the tubular workpiece from falling. However, the workpiece can move up and down under the action of external force. In this way, when the moving module is working, it can push the tubular workpiece upward in sections to prevent the workpiece from falling.

[0038] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A workpiece surface sandblasting robot, characterized by: It includes a sandblasting device and a moving device, wherein the sandblasting device is used to sandblast the surface of a workpiece fixed on the moving device, and the moving device is used to drive the workpiece to move vertically relative to the sandblasting device; The moving device comprises a column (1), a moving module, a buffer and cooling module, and a clamping module. The moving module is provided below the column (1), the clamping module is provided below the moving module, and the buffer and cooling module is provided on the column (1); The buffer and cooling module comprises a sealing ring (2), a pressure ring (3), a linear reciprocating motion mechanism, and a water storage cylinder (4); the sealing ring (2) is coaxially fixed on the column (1); a pressure ring (3) is coaxially sleeved on the column (1) above the sealing ring (2); a water storage cylinder (4) is coaxially fixed on the surface of the pressure ring (3) away from the sealing ring (2); a water injection pipe (5) and a water return pipe (6) are penetrated by the pressure ring (3) in the water storage cylinder (4); the water injection pipe (5) and the water return pipe (6) are both provided with control valves, and the control valves are used to control the on-off of the water injection pipe (5) and the water return pipe (6); the linear reciprocating motion mechanism is used to drive the pressure ring (3) to perform linear reciprocating motion on the column (1).

2. A workpiece surface sandblasting robot according to claim 1, characterized in that: The sandblasting device comprises a gantry (17), a rotating module, a mechanical arm (20), and a sandblasting gun (21); the rotating module is mounted on the gantry (17); one end of the mechanical arm (20) is connected to the rotating module; and the other end of the mechanical arm (20) is mounted with a sandblasting gun (21).

3. A workpiece surface sandblasting robot according to claim 2, characterized in that: The rotation module comprises a fixed shaft (18), an outer gear ring (19), and a first driving mechanism, wherein the fixed shaft (18) is fixed on the door frame (17), the outer gear ring (19) is coaxially rotatably mounted on the fixed shaft (18), the robotic arm (20) is connected to the outer gear ring (19), and the first driving mechanism is used to drive the outer gear ring (19) to rotate.

4. A workpiece surface sandblasting robot according to claim 1, characterized in that: The moving module comprises a cam (10), a camshaft, and a second driving mechanism. A plurality of cams (10) are arranged around the central axis of the column (1). A camshaft is coaxially fixed to each of the cams (10). The camshafts are rotatably connected to the column (1). The camshafts are transmission-connected to the second driving mechanism. The second driving mechanism is used to synchronously drive the plurality of cams (10) to rotate synchronously.

5. A workpiece surface sandblasting robot according to claim 4, characterized in that: The cam (10) is made of rubber.

6. A workpiece surface sandblasting robot according to claim 5, characterized in that: The number of the cams (10) is two, and the two cams (10) are symmetrically arranged. The second driving mechanism includes a crank-connecting rod structure (11), a slider (12), a slide rail (14), and a first hydraulic rod (13). The slide rail (14) is arranged between the two cams (10). Two sliders (12) are slidably installed in the slide rail (14). Each of the sliders (12) is connected to a first hydraulic rod (13). The first hydraulic rod (13) is used to drive the slider (12) to reciprocate in the slide rail (14). Each of the sliders (12) is connected to a corresponding camshaft through a crank-connecting rod structure (11).

7. A workpiece surface sandblasting robot according to claim 1, characterized in that: The clamping module comprises an arc-shaped clamping plate (15), a second hydraulic rod (16), and a positioning plate (9). The two arc-shaped clamping plates (15) are symmetrically arranged on both sides of the positioning plate (9). The positioning plate (9) is coaxially fixedly connected to the column (1). Each arc-shaped clamping plate (15) is connected to a second hydraulic rod (16). The second hydraulic rod (16) is used to drive the arc-shaped clamping plate (15) to perform reciprocating motion relative to the positioning plate (9).

8. A workpiece surface sandblasting robot according to claim 1, characterized in that: The linear reciprocating motion mechanism comprises a third hydraulic rod (7) and a connecting frame (8); the third hydraulic rod (7) is coaxially fixed on the top of the column (1); and the third hydraulic rod (7) is connected to the pressure ring (3) via the connecting frame (8).

9. A workpiece surface sandblasting robot according to claim 1, characterized in that: The top of the return pipe (6) is higher than the top of the injection pipe (5); and the control valve is a solenoid valve.

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