A pump casing surface spraying device

Abstract

The present application relates to the technical field of spraying, in particular to a pump shell surface spraying device, which comprises a spraying table and a first prism arranged above the spraying table, a spraying head for spraying is arranged below the first prism, an angle adjusting structure for driving the spraying head to rotate is arranged on the first prism, a translation sleeve is sleeved on the outside of the first prism, a guide assembly is arranged on the spraying table, and the guide assembly is used for limiting the linear translation track of the translation sleeve above or below the pump shell; the working position and posture of the spraying head can be flexibly switched according to the spraying requirements of different parts of the pump shell, especially the linear translation track of the translation sleeve above or below the pump shell is limited by the guide assembly, and the rotation of the rotating frame and the extension and contraction of the first electric push rod are combined, so that the full surface of the pump shell is covered and sprayed.

Description

Technical Field

[0001] This invention relates to the field of spraying technology, and more particularly to a pump casing surface spraying device. Background Technology

[0002] The pump casing is the core housing component of pump products, and its surface typically requires coating with anti-corrosion, wear-resistant, or decorative coatings. Currently, most existing pump casing coating devices employ Cartesian coordinate spraying mechanisms (such as a vertical electric actuator plus a horizontal electric actuator), coordinating with workpiece rotation for spraying. However, in existing Cartesian coordinate or single-arm rotary spraying devices, the nozzle is usually positioned above or to the side of the pump casing, with its movement limited to vertical lifting and horizontal radial movement. Because the pump casing is placed on a support platform or rotating unit, its bottom surface is obscured by the workpiece itself, preventing the nozzle from approaching the bottom surface from below. Even in devices that allow the nozzle to tilt at a certain angle, limitations in arm length and interference risks make it difficult to achieve full coverage of the bottom surface, especially near the center. This results in the bottom surface becoming a blind spot for automated spraying. To complete the bottom surface coating, existing processes necessitate manual intervention, removing the pump casing from the spraying station, manually rotating it 180°, and then re-clamping it for a second spraying. This process leads to a significant reduction in production efficiency. The pump casing is heavy, and manual turning requires the use of lifting equipment or multiple people. Improper operation may cause the workpiece to slip and injure personnel or damage the equipment. Long-term and frequent turning can also easily cause strain on the waist and arms of operators. Moreover, the secondary clamping and positioning accuracy is poor, which affects the coating quality.

[0003] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a pump housing surface spraying device to solve the problem that the bottom surface of the pump housing is blocked by the workpiece itself when the pump housing is placed on a support platform or a rotating unit, and the spray nozzle cannot approach the bottom surface of the pump housing from below.

[0005] To achieve the above objectives, the present invention provides a pump casing surface spraying device, including a spraying table and a first prism disposed above the spraying table. A spraying head for spraying is disposed below the first prism. An angle adjustment structure for driving the spraying head to rotate is installed on the first prism. A translation sleeve is slidably sleeved on the outside of the first prism. A guide component is installed on the spraying table. The guide component is used to limit the linear translation trajectory of the translation sleeve located above or below the pump casing. The spraying station is equipped with a rotating frame and a rotating column above it. The rotating column is equipped with an adjustment component adapted to the rotating frame. The spraying station is equipped with a drive assembly for driving the rotating column to rotate and translate. The end of the rotating frame away from the rotating column is rotatably connected to a support base. A first electric push rod is fixedly connected to the first prism, and the telescopic end of the first electric push rod is fixedly connected to the support base. The spraying station is equipped with a rotation unit for driving the pump housing to rotate. The guide assembly cooperates with the translation sleeve to selectively limit the translation sleeve to a straight translation trajectory above or below the pump housing. The drive assembly drives the rotating frame to rotate, and the rotating frame drives the support base and the spraying head to move to the side, top, or bottom position of the pump housing.

[0006] Optionally, the guiding assembly includes a support frame fixedly installed on the top of the spraying station. The support frame has two guide grooves, and a guide block is slidably provided in the guide groove. Two trays adapted to the translation sleeve are fixedly connected to the guide blocks. Two sets of support members adapted to the trays are provided on both sides of the translation sleeve. The trays are used to support two adjacent sets of support members located on the same side of the translation sleeve. Each set of support members includes two rollers rotatably installed on the translation sleeve. The distance between two adjacent rollers in the vertical direction is consistent with the thickness of the tray, and the distance between two adjacent trays is consistent with the width of the translation sleeve.

[0007] Optionally, a first groove is provided at the end of the pallet away from the guide block, a sliding plate is slidably provided in the first groove, a first rectangular hole is provided on the inner walls of both sides of the first groove, a limiting block is slidably provided in the first rectangular hole, the limiting block and the sliding plate are fixedly connected, and the top horizontal position of the sliding plate is consistent with the top horizontal position of the pallet.

[0008] Optionally, the adjusting component includes a second electric push rod fixedly mounted on the rotating column, with one end of the rotating frame away from the support base passing through the rotating column, and a mounting plate fixedly connected to the telescopic end of the second electric push rod, and the mounting plate and the rotating frame being fixedly connected.

[0009] Optionally, the drive assembly includes a mounting bracket fixedly installed on the top of the spray table, a first connecting shaft rotatably connected to the mounting bracket, a first servo motor fixedly connected to the mounting bracket, the output end of the first servo motor fixedly connected to the first connecting shaft, a second sliding groove opened on the rotating column, a second prism fixedly connected to the first connecting shaft, and the end of the second prism away from the first connecting shaft slidably installed in the second sliding groove, and a translator adapted to the rotating column installed on the mounting bracket.

[0010] Optionally, the translator includes a third electric push rod fixedly mounted on the mounting frame, the telescopic end of the third electric push rod being fixedly connected to a movable frame, and the movable frame being rotatably sleeved on the outside of the rotating column.

[0011] Optionally, the angle adjustment structure includes a fixed frame fixedly installed on the end of the first prism facing the spray head. Rotary shafts are fixedly connected to both sides of the spray head, the rotating shafts pass through the fixed frame, and the rotating shafts and the fixed frame are rotatably connected. A winding wheel located inside the fixed frame is fixedly sleeved on the outside of the rotating shaft. Pull ropes are wound around the outside of the winding wheel, and the two pull ropes are wound on the two winding wheels in opposite directions. One end of the pull rope is fixedly connected to the winding wheel, and the other end of the pull rope passes through the fixed frame and the first prism. An opposite movement mechanism for pulling the two pull ropes to move in opposite directions is installed on the first prism.

[0012] Optionally, the opposite movement mechanism includes two sliding frames disposed at the end of the first prism away from the spray head. The sliding frames pass through the first prism and are slidably connected to the first prism. The ends of two pull ropes away from the winding wheel are respectively fixedly connected to the two sliding frames. A rotating plate is provided above the first prism. Two second rectangular holes are opened on the rotating plate. Movable columns are slidably disposed in the second rectangular holes, and the two movable columns are respectively fixedly connected to the two sliding frames. A swinging component adapted to the rotating plate is installed on the first prism.

[0013] Optionally, the swinging component includes a motor frame fixedly mounted on the first prism, a second servo motor fixedly connected to the motor frame, a second connecting shaft fixedly connected to the output end of the second servo motor, the second connecting shaft and the motor frame being rotatably connected, and the second connecting shaft being fixedly connected to the rotating plate.

[0014] Optionally, the self-rotating unit includes a support shaft rotatably mounted on the spraying table, a third servo motor is fixedly connected to the spraying table, the output end of the third servo motor is fixedly connected to the bottom end of the support shaft, and a four-jaw chuck located above the spraying table is fixedly connected to the top end of the support shaft.

[0015] The beneficial effects of this invention are: it can flexibly switch the working position and posture of the spray head according to the spraying requirements of different parts of the pump casing. In particular, by using the linear translation trajectory of the translation sleeve located above or below the pump casing under the limitation of the guide component, combined with the rotation of the rotating frame and the extension and retraction of the first electric push rod, it achieves full-surface coverage spraying of the pump casing. Considering that the pump casing surface has both curved and flat features, this device drives the rotating column to translate through the drive component. With the rotation of the rotating column, the spray head can flexibly switch between horizontal translation and vertical movement, realizing scanning spraying of the flat surface. At the same time, it utilizes the pump casing rotation and the fixed position of the spray head to achieve full-surface coverage spraying. The device completes circumferential spraying of curved surfaces. The two modes are switched using the same set of drive components. The compact structure solves the problem of poor adaptability of traditional spraying devices to irregularly shaped pump housings. By adjusting the rotating frame relative to the rotating column, the distance between the spray head and the pump housing surface can be adjusted in real time to adapt to different curvature changes and ensure coating uniformity. The operator drives the first prism, translation sleeve, first electric push rod and support base to rotate relative to the rotating frame, so that the translation sleeve switches from the top to the bottom of the pump housing. With the help of the guide component, the linear translation trajectory is re-limited, realizing reliable spraying of the bottom surface of the pump housing. This breaks the limitation of traditional spraying devices that can only process the upper surface of the workpiece. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is one of the overall structural schematic diagrams of an embodiment of the present invention; Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 For the present invention Figure 1 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the internal structure of the fixing frame according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the opposite-direction movement mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the swing component according to an embodiment of the present invention; Figure 7 This is a structural schematic diagram of the combined state of the translation sleeve and the support plate according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the driving component according to an embodiment of the present invention; Figure 9This is a schematic diagram of the rotating column in an embodiment of the present invention.

[0018] The diagram is marked as follows: 1. Spraying table; 2. First prism; 3. Spray head; 4. Translation sleeve; 5. Rotating frame; 6. Four-jaw chuck; 7. Support base; 8. First electric push rod; 9. Rotating column; 10. Support frame; 11. Guide groove; 12. Guide block; 13. Support plate; 14. Roller; 15. First slide groove; 16. Sliding plate; 17. First rectangular hole; 18. Limiting block; 19. Second electric push rod; 20. Mounting plate; 21. Second prism; 2. Second slide rail; 23. First servo motor; 24. Mounting bracket; 25. First connecting shaft; 26. Third electric push rod; 27. Movable frame; 28. Fixed frame; 29. ​​Rotating shaft; 30. Winding wheel; 31. Pull rope; 32. Sliding frame; 33. Movable column; 34. Rotating plate; 35. Second rectangular hole; 36. Motor frame; 37. Second servo motor; 38. Second connecting shaft; 39. Support shaft; 40. Third servo motor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] Example 1, by Figure 1 , Figure 2 and Figure 3 The present invention includes a spraying table 1 and a first prism 2 disposed above the spraying table 1. A spraying head 3 for spraying is disposed below the first prism 2. An angle adjustment structure for driving the spraying head 3 to rotate is installed on the first prism 2. A translation sleeve 4 is slidably sleeved on the outside of the first prism 2. A guide assembly is installed on the spraying table 1. The guide assembly is used to limit the linear translation trajectory of the translation sleeve 4 located above or below the pump housing. A rotating frame 5 and a rotating column 9 are provided above the spraying station 1. Adjustable parts adapted to the rotating frame 5 are installed on the rotating column 9. A drive assembly for driving the rotating column 9 to rotate and translate is installed on the spraying station 1. A support base 7 is rotatably connected to the end of the rotating frame 5 away from the rotating column 9. A first electric push rod 8 is fixedly connected to the first prism 2, and the telescopic end of the first electric push rod 8 is fixedly connected to the support base 7. A rotation unit for driving the pump housing to rotate is installed on the spraying station 1. A guide assembly cooperates with a translation sleeve 4, selectively limiting the translation sleeve 4 to a straight translation trajectory above or below the pump housing. The drive assembly drives the rotating frame 5 to rotate, and the rotating frame 5 moves the support base 7 and the spray head 3 to the side, top, or bottom position of the pump housing. The operator then selects the area to be sprayed. The pump casing is placed on a rotating unit, which drives the pump casing to rotate. When spraying the side or top surface of the pump casing, the translation sleeve 4 is positioned above the pump casing. The guide assembly limits the linear translation trajectory of the translation sleeve 4 above the pump casing. The drive assembly drives the rotating frame 5 to rotate, causing the rotating frame 5 to drive the support base 7 to move to the side or top of the pump casing. The rotating frame 5 rotates relative to the support base 7. The support base 7 drives the first prism 2 to slide relative to the translation sleeve 4 via the first electric push rod 8. Guided by the guide assembly, the first prism 2 pushes the translation sleeve 4 to translate, so that the spray head 3 moves to the preset position. When spraying the bottom surface of the pump casing, the operator drives the first prism 2, the translation sleeve 4, the first electric push rod 8, and the support base 7 to rotate. The base 7 rotates relative to the rotating frame 5, causing the translation sleeve 4 to rotate to the bottom of the pump housing. The guide assembly limits the linear translation trajectory of the translation sleeve 4 below the pump housing. At this point, the drive assembly drives the rotating frame 5 to rotate, moving the support base 7 and the spray head 3 to the bottom of the pump housing. When spraying the inner surface of the pump housing is required, after the spray head 3 moves to a preset position above the pump housing, the height of the support base 7 and the rotating frame 5 remains unchanged. The first electric push rod 8 is activated, shortening its length. The first prism 2 and the spray head 3 move downwards relative to the translation sleeve 4 and the support base 7, allowing the spray head 3 to extend into the pump housing. The adjusting component drives the rotating frame 5 to move relative to the rotating column 9, thereby adjusting the distance between the spray head 3 and the pump housing. The spraying distance is adjusted according to the pump housing spraying requirements. The tilt of the coating surface is adjusted by the angle adjustment structure driving the spray head 3 to rotate relative to the first prism 2. When the pump housing rotates, the spray head 3 can spray the pump housing. When the surface of the pump housing to be sprayed is not curved but flat, the drive assembly drives the rotating column 9 to translate. The rotating column 9 can then drive the rotating frame 5 and the spray head 3 to translate horizontally. In conjunction with the drive assembly driving the rotating column 9 and the rotating frame 5 to rotate, and the adjustment component driving the rotating frame 5 to move relative to the rotating column 9, the spray head 3 can move vertically, thus spraying the flat surface of the pump housing. The working position and posture of the spray head 3 can be flexibly switched according to the spraying requirements of different parts of the pump housing. In particular, the translation sleeve 4, under the limit of the guide assembly, is located above or below the pump housing in a straight line translation trajectory.By combining the rotation of the rotating frame 5 with the extension and retraction of the first electric push rod 8, full-surface coverage spraying of the pump casing is achieved. Considering the pump casing surface has both curved and flat surfaces, this device drives the rotating column 9 to translate via a drive assembly. The rotation of the rotating column 9 allows the spray head 3 to flexibly switch between horizontal and vertical movement, achieving scanning spraying of the flat surface. Simultaneously, the pump casing's rotation and the fixed position of the spray head 3 coordinate to complete circumferential spraying of the curved surface. Both modes are switched using the same drive assembly, resulting in a compact structure that solves the problems of traditional spraying methods. To address the issue of poor adaptability to irregularly shaped pump casings, the device utilizes an adjusting mechanism to drive the rotating frame 5 to move relative to the rotating column 9. This allows for real-time adjustment of the distance between the spray head 3 and the pump casing surface, accommodating different curvature variations and ensuring coating uniformity. The operator drives the first prism 2, translation sleeve 4, first electric push rod 8, and support base 7 to rotate relative to the rotating frame 5, switching the translation sleeve 4 from above to below the pump casing. The guide assembly then repositions the linear translation trajectory, enabling reliable spraying of the bottom surface of the pump casing. This overcomes the limitation of traditional spraying devices that can only treat the upper surface of workpieces.

[0021] Example 2, based on Example 1, is... Figure 1 and Figure 7 The guide assembly includes a support frame 10 fixedly mounted on the top of the spray table 1. The support frame 10 has two guide grooves 11, and guide blocks 12 are slidably disposed within the guide grooves 11. Two support plates 13 adapted to the translation sleeve 4 are fixedly connected to the guide blocks 12. Two sets of support members adapted to the support plates 13 are provided on both sides of the translation sleeve 4. The support plates 13 are used to support two adjacent sets of support members located on the same side of the translation sleeve 4. Each set of support members includes two rollers 14 rotatably mounted on the translation sleeve 4, vertically adjacent to each other. The distance between the two rollers 14 is the same as the thickness of the pallet 13, and the distance between two adjacent pallets 13 is the same as the width of the translation sleeve 4. A first groove 15 is provided at the end of the pallet 13 away from the guide block 12. A sliding plate 16 is slidably provided in the first groove 15. A first rectangular hole 17 is provided on the inner walls of both sides of the first groove 15. A limiting block 18 is slidably provided in the first rectangular hole 17. The limiting block 18 and the sliding plate 16 are fixedly connected, and the top horizontal position of the sliding plate 16 is the same as the top horizontal position of the pallet 13. When the translation sleeve 4 needs to be positioned above the pump casing, the operator drives the first prism 2, the translation sleeve 4, the first electric push rod 8, and the support base 7 to rotate relative to the rotating frame 5, so that the translation sleeve 4 rotates to the top of the pump casing. Conversely, when the translation sleeve 4 needs to be positioned below the pump casing, the operator drives the first prism 2, the translation sleeve 4, the first electric push rod 8, and the support base 7 to rotate relative to the rotating frame 5, so that the translation sleeve 4 rotates to the bottom of the pump casing. When the translation sleeve 4 is located on the side of the support plate 13 away from the guide block 12, the operator drives the corresponding sliding plate 16 to slide relative to the first slide groove 15, and the limiting block 18 to slide relative to the first rectangular hole 17. Through the design of the first rectangular hole 17 and the limiting block 18, the sliding plate 16 is positioned relative to the support plate. 13. With smooth sliding, the sliding plate 16 eventually moves between two vertically adjacent rollers 14. At this time, when the rotating column 9 and rotating frame 5 are driven to rotate by the drive assembly, the rotating frame 5 can drive the first prism 2 to slide vertically relative to the translation sleeve 4 through the first electric push rod 8. The first prism 2 can also drive the roller 14 to slide from the sliding plate 16 to the support plate 13 through the translation sleeve 4. The position of the translation sleeve 4 is limited by the support plate 13 so that the translation sleeve 4 and the first prism 2 can move smoothly in the horizontal direction. When the drive assembly drives the rotating column 9 and rotating frame 5 to translate, and the rotating frame 5 drives the first prism 2 and translation sleeve 4 to translate, the translation sleeve 4 drives the guide block 12 to slide relative to the guide groove 11 through the support plate 13, so that the spray head 3 can move in the horizontal direction.

[0022] Example 3, based on Example 1, is... Figure 1 , Figure 2 , Figure 8 and Figure 9 The adjustment component includes a second electric push rod 19 fixedly mounted on the rotating column 9. The end of the rotating frame 5 away from the support base 7 passes through the rotating column 9. The telescopic end of the second electric push rod 19 is fixedly connected to a mounting plate 20, and the mounting plate 20 and the rotating frame 5 are fixedly connected. The drive assembly includes a mounting frame 24 fixedly mounted on the top of the spray table 1. A first connecting shaft 25 is rotatably connected to the mounting frame 24. A first servo motor 23 is fixedly connected to the mounting frame 24. The output end of the first servo motor 23 is fixedly connected to the first connecting shaft 25. A second slide groove 22 is provided on the rotating column 9. A second prism 21 is fixedly connected to the first connecting shaft 25, and the end of the second prism 21 away from the first connecting shaft 25 is slidably mounted in the second slide groove 22. A translator adapted to the rotating column 9 is mounted on the mounting frame 24. The translator includes a third electric push rod 26 fixedly mounted on the mounting frame 24. A movable frame 27 is fixedly connected to the telescopic end of the third electric push rod 26, and the movable frame 27 is rotatably sleeved on the outside of the rotating column 9. By driving the mounting plate 20 and the rotating frame 5 to slide relative to the rotating column 9 via the second electric push rod 19, the positions of the first prism 2 and the spray head 3 can be changed. By driving the first connecting shaft 25 and the second prism 21 to rotate via the first servo motor 23, the second prism 21 can drive the rotating column 9 and the rotating frame 5 to rotate. The rotating column 9 rotates relative to the movable frame 27. By driving the movable frame 27 to translate via the third electric push rod 26, the movable frame 27 can drive the rotating column 9 to slide relative to the second prism 21, thereby making the rotating frame 5 move horizontally.

[0023] Example 4, based on Example 1, is... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The angle adjustment structure includes a fixed frame 28 fixedly installed on the end of the first prism 2 facing the spray head 3. Rotary shafts 29 are fixedly connected to both sides of the spray head 3, passing through the fixed frame 28 and rotatably connected to it. A winding wheel 30 located inside the fixed frame 28 is fixedly sleeved on the outside of the rotating shaft 29. Pull ropes 31 are wound around the outside of the winding wheel 30, with the two pull ropes 31 wound in opposite directions on the two winding wheels 30. One end of each pull rope 31 is fixedly connected to the winding wheel 30, and the other end passes through the fixed frame 28 and the first prism 2. An opposing movement mechanism for pulling the two pull ropes 31 in opposite directions is installed on the first prism 2. The opposing movement mechanism includes two sliding frames 32 located at the end of the first prism 2 away from the spray head 3. The sliding frames 32 pass through the first prism 2 and are slidably connected to it. The ends of the two pull ropes 31 away from the winding wheel 30 are respectively connected to the two sliding frames 32. The moving frame 32 is fixedly connected. A rotating plate 34 is provided above the first prism 2. Two second rectangular holes 35 are opened on the rotating plate 34. Movable columns 33 are slidably arranged in the second rectangular holes 35. The two movable columns 33 are fixedly connected to the two sliding frames 32 respectively. A swinging component adapted to the rotating plate 34 is installed on the first prism 2. The swinging component includes a motor frame 36 fixedly installed on the first prism 2. A second servo motor 37 is fixedly connected on the motor frame 36. A second connecting shaft 38 is fixedly connected to the output end of the second servo motor 37. The second connecting shaft 38 and the motor frame 36 are rotatably connected. The second connecting shaft 38 and the rotating plate 34 are fixedly connected. The self-rotating unit includes a support shaft 39 rotatably installed on the spraying table 1. A third servo motor 40 is fixedly connected on the spraying table 1. The output end of the third servo motor 40 is fixedly connected to the bottom end of the support shaft 39. A four-jaw chuck 6 located above the spraying table 1 is fixedly connected to the top end of the support shaft 39. The second servo motor 37 drives the second connecting shaft 38 to rotate, which in turn drives the rotating plate 34 to rotate. The rotating plate 34 then drives the two movable columns 33 to slide within the two second rectangular holes 35. The two movable columns 33 then drive the two sliding frames 32 to slide in opposite directions relative to the first prism 2 in the vertical direction. The two sliding frames 32 then pull the two pull ropes 31 to move in opposite directions. Since the two pull ropes 31 are wound around the two winding wheels 30 in opposite directions, the length of one pull rope 31 wound around the winding wheel 30 can be increased, and the length of the other pull rope 31 wound around the other winding wheel 30 can be decreased. The winding wheel 30 can then drive the spray head 3 to tilt and rotate via the rotating shaft 29. The second servo motor 37 drives the second connecting shaft 38 to rotate in the opposite direction, causing the spray head 3 to rotate in the opposite direction. The operator fixes the pump housing to be sprayed onto the support shaft 39 via the four-jaw chuck 6. The third servo motor 40 drives the support shaft 39 and the four-jaw chuck 6 to rotate, causing the pump housing to rotate.

[0024] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A pump casing surface spraying device, comprising a spraying table (1) and a first prism (2) disposed above the spraying table (1), characterized in that, A spray head (3) for spraying is provided below the first prism (2). An angle adjustment structure for driving the spray head (3) to rotate is installed on the first prism (2). A translation sleeve (4) is provided on the outer sliding sleeve of the first prism (2). A guide component is installed on the spraying table (1). The guide component is used to limit the straight translation trajectory of the translation sleeve (4) located above or below the pump housing. The spraying station (1) is provided with a rotating frame (5) and a rotating column (9) above it. An adjustment component adapted to the rotating frame (5) is installed on the rotating column (9). The spraying station (1) is provided with a drive assembly for driving the rotating column (9) to rotate and translate. A support base (7) is rotatably connected to one end of the rotating frame (5) away from the rotating column (9). A first electric push rod (8) is fixedly connected to the first prism (2), and the telescopic end of the first electric push rod (8) is fixedly connected to the support base (7). A self-rotating unit for driving the pump housing to rotate is installed on the spraying station (1). The guide assembly cooperates with the translation sleeve (4) to selectively limit the translation sleeve (4) to a straight translation trajectory above or below the pump housing. The drive assembly drives the rotating frame (5) to rotate. The rotating frame (5) drives the support base (7) and the spraying head (3) to move to the side, top or bottom position of the pump housing.

2. The pump casing surface spraying device according to claim 1, characterized in that, The guiding assembly includes a support frame (10) fixedly installed on the top of the spraying station (1). The support frame (10) has two guide grooves (11). A guide block (12) is slidably provided in the guide groove (11). Two trays (13) adapted to the translation sleeve (4) are fixedly connected to the guide block (12). Two sets of support members adapted to the trays (13) are provided on both sides of the translation sleeve (4). The trays (13) are used to support two adjacent sets of support members located on the same side of the translation sleeve (4). Each set of support members includes two rollers (14) rotatably installed on the translation sleeve (4). The distance between two adjacent rollers (14) in the vertical direction is consistent with the thickness of the tray (13). The distance between two adjacent trays (13) is consistent with the width of the translation sleeve (4).

3. The pump casing surface spraying device according to claim 2, characterized in that, The pallet (13) has a first groove (15) at one end away from the guide block (12). A sliding plate (16) is slidably disposed in the first groove (15). A first rectangular hole (17) is provided on the inner walls of both sides of the first groove (15). A limiting block (18) is slidably disposed in the first rectangular hole (17). The limiting block (18) and the sliding plate (16) are fixedly connected, and the top horizontal position of the sliding plate (16) is consistent with the top horizontal position of the pallet (13).

4. The pump casing surface spraying device according to claim 1, characterized in that, The adjusting component includes a second electric push rod (19) fixedly installed on the rotating column (9), and one end of the rotating frame (5) away from the support base (7) passes through the rotating column (9). The telescopic end of the second electric push rod (19) is fixedly connected to the mounting plate (20), and the mounting plate (20) and the rotating frame (5) are fixedly connected.

5. The pump casing surface spraying device according to claim 1, characterized in that, The drive assembly includes a mounting bracket (24) fixedly installed on the top of the spray table (1), a first connecting shaft (25) rotatably connected to the mounting bracket (24), a first servo motor (23) fixedly connected to the mounting bracket (24), the output end of the first servo motor (23) and the first connecting shaft (25) fixedly connected, a second slide groove (22) is provided on the rotating column (9), a second prism (21) is fixedly connected to the first connecting shaft (25), and the end of the second prism (21) away from the first connecting shaft (25) is slidably installed in the second slide groove (22), and a translator adapted to the rotating column (9) is installed on the mounting bracket (24).

6. The pump casing surface spraying device according to claim 5, characterized in that, The translation device includes a third electric push rod (26) fixedly installed on the mounting frame (24). The telescopic end of the third electric push rod (26) is fixedly connected to a movable frame (27), and the movable frame (27) is rotatably sleeved on the outside of the rotating column (9).

7. The pump casing surface spraying device according to claim 1, characterized in that, The angle adjustment structure includes a fixed frame (28) fixedly installed on the first prism (2) facing the spray head (3). A rotating shaft (29) is fixedly connected to both sides of the spray head (3). The rotating shaft (29) passes through the fixed frame (28) and is rotatably connected to the fixed frame (28). A winding wheel (30) located inside the fixed frame (28) is fixedly sleeved on the outside of the rotating shaft (29). A pull rope (31) is wound around the outside of the winding wheel (30). The two pull ropes (31) are wound on the two winding wheels (30) in opposite directions. One end of the pull rope (31) is fixedly connected to the winding wheel (30). The other end of the pull rope (31) passes through the fixed frame (28) and the first prism (2). An opposite movement mechanism for pulling the two pull ropes (31) to move in opposite directions is installed on the first prism (2).

8. The pump casing surface spraying device according to claim 7, characterized in that, The opposite movement mechanism includes two sliding frames (32) located at the end of the first prism (2) away from the spray head (3). The sliding frames (32) pass through the first prism (2) and are slidably connected to the first prism (2). The ends of the two pull ropes (31) away from the winding wheel (30) are fixedly connected to the two sliding frames (32) respectively. A rotating plate (34) is provided above the first prism (2). Two second rectangular holes (35) are opened on the rotating plate (34). Movable columns (33) are slidably provided in the second rectangular holes (35), and the two movable columns (33) are fixedly connected to the two sliding frames (32) respectively. A swinging component adapted to the rotating plate (34) is installed on the first prism (2).

9. The pump casing surface spraying device according to claim 8, characterized in that, The swinging component includes a motor frame (36) fixedly installed on the first prism (2), a second servo motor (37) fixedly connected to the motor frame (36), a second connecting shaft (38) fixedly connected to the output end of the second servo motor (37), the second connecting shaft (38) and the motor frame (36) being rotatably connected, and the second connecting shaft (38) and the rotating plate (34) being fixedly connected.

10. The pump casing surface spraying device according to claim 1, characterized in that, The self-rotating unit includes a support shaft (39) rotatably mounted on the spraying table (1), a third servo motor (40) is fixedly connected to the spraying table (1), the output end of the third servo motor (40) is fixedly connected to the bottom end of the support shaft (39), and a four-jaw chuck (6) located above the spraying table (1) is fixedly connected to the top end of the support shaft (39).

Images