A putty batch scraping and primer touch-up integrated surface treatment device

Abstract

The application provides a putty batch scraping and primer coating integrated surface treatment device, and relates to the field of putty batch scraping and primer coating devices.The device comprises a mobile trolley, a paint bucket, a water bucket, a handheld treatment mechanism and a conveying mechanism.The paint bucket and the water bucket are detachably arranged on the mobile trolley.The mobile trolley is provided with a slot for placing the handheld treatment mechanism.A conveying mechanism is arranged between the handheld treatment mechanism, the paint bucket and the water bucket to convey paint and water.The putty batch scraping, surface polishing, primer coating and spraying mechanisms are integrated in the same handheld treatment mechanism, and the paint bucket, the water bucket and the conveying pipeline are carried by an integrated mobile trolley.Workers do not need to frequently replace multiple independent tools.The trolley can be moved and transported as a whole.The handheld mechanism can be inserted into the slot of the trolley for storage and use, which greatly shortens the process switching time and improves the overall operation efficiency of metal plate repair.

Description

Technical Field

[0001] This invention relates to the technical field of putty application and primer touch-up equipment, and in particular to an integrated surface treatment equipment for putty application and primer touch-up. Background Technology

[0002] In the surface repair and processing of automobiles, sheet metal components, etc., the workpiece defect repair process usually involves four steps: applying putty, drying and curing, surface sanding, and primer recoating. Traditional processing methods have multiple defects. Putty application, sanding, and primer spraying all require separate tools. Workers need to alternate between three types of equipment: putty scraper, handheld sander, and spray gun. Frequent tool handling significantly extends the intervals between processes, resulting in low work efficiency. The various tools are scattered and the pipelines on site are messy, making it inconvenient to move and transport them. Therefore, this invention proposes an integrated surface treatment device for putty application and primer touch-up to solve the problems existing in the prior art. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes an integrated surface treatment device for putty application and primer touch-up. This integrated surface treatment device integrates putty application, surface sanding, primer touch-up, and the self-cleaning function of the spraying mechanism into a single handheld processing unit. It is equipped with an integrated mobile trolley to carry paint buckets, water buckets, and delivery pipelines. Workers do not need to frequently change multiple separate tools. The trolley can be moved and transported as a whole, and the handheld mechanism can be inserted into the slot of the trolley for storage and retrieval, which greatly shortens the process changeover time and improves the overall efficiency of sheet metal repair.

[0004] To achieve the purpose of this invention, the invention is implemented through the following technical solution: an integrated surface treatment device for putty application and primer touch-up, comprising a mobile trolley, a paint bucket, a water bucket, a hand-held processing mechanism and a conveying mechanism. The paint bucket and water bucket are detachably mounted on the mobile trolley, and the mobile trolley is provided with a slot for placing the hand-held mechanism. A conveying mechanism for conveying paint and water is provided between the hand-held mechanism and the paint bucket and water bucket. The handheld processing mechanism includes a scraper, an elastic element, a central column, a paint spraying pipe, a paint cover, an adjustment mechanism, a cleaning element, a handle, and an auxiliary squeezing mechanism. The scraper is located on one side of the central column, and an elastic element is provided between the scraper and the central column to squeeze the upper and lower ends of the scraper. The paint cover is located on the other side of the central column, and an adjustment mechanism for adjusting the angle of the paint cover is provided between the paint cover and the central column. The paint cover has a paint spraying pipe inside, and multiple sets of atomizing nozzles are evenly distributed on the paint spraying pipe. A cleaning element is provided on the inner side of the paint spraying pipe to clean the inner wall of the paint cover. The paint spraying pipe and the cleaning element are both connected to the conveying mechanism. An auxiliary squeezing mechanism is provided at the bottom of the central column, and a handle is provided at the bottom of the auxiliary squeezing mechanism. The handle has multiple sets of control buttons.

[0005] A further improvement is made in that: the elastic element includes a first hinge rod, a second hinge rod, a sliding seat, a support spring, and a slide groove. One end of the first hinge rod is hinged to the upper end of the scraper, and the other end is hinged to the second hinge rod. The upper end of the second hinge rod is fixedly connected to the central column. The lower end of the inner wall of the scraper is provided with a slide groove. A sliding seat is slidably installed in the slide groove. The sliding seat is hinged to the lower end of the second hinge rod. A support spring is provided at the bottom of the sliding seat, and the support spring is located in the slide groove.

[0006] A further improvement is made in that: a grinding disc is provided at the middle of the outer wall of the scraper, a groove is provided on the outer wall of the scraper to accommodate the grinding disc, a grinding motor is provided in the groove, a limiting member is provided between the grinding motor and the scraper, a first wedge block is provided on the inner side wall of the grinding motor, a second wedge block is provided on the sliding seat, the second wedge block is inserted from the bottom to squeeze the first wedge block and push the grinding disc out of the groove, and a first electric push rod is also provided in the groove to limit the bottom of the sliding seat.

[0007] A further improvement is that the limiting component includes a limiting groove and a limiting block. The limiting blocks are symmetrically arranged on both sides of the grinding motor. The scraper plate is provided with a limiting groove that matches the limiting block. The limiting block and the limiting groove cooperate to limit the extension distance of the grinding disc.

[0008] A further improvement is made in that: the adjustment mechanism includes an adjustment rod and a second electric telescopic rod, one end of the adjustment rod is fixedly connected to the upper end of the central column, and the other end is hinged to the upper end of the paint cover; one end of the second electric telescopic rod is hinged to the lower end of the central column, and the other end is hinged to the middle end of the paint cover.

[0009] Further improvements are made in that: the cleaning component includes an annular water tank and a high-pressure nozzle, the paint cover is in the shape of a truncated pyramid, the annular water tank is adapted to the inner wall of the paint cover, and multiple sets of high-pressure nozzles are evenly distributed on the annular water tank, with the high-pressure nozzles being inclined and their output ends facing the inner wall of the paint cover.

[0010] A further improvement is made in that: the auxiliary extrusion mechanism includes a limiting frame and a third electric telescopic rod, the lower end of the central column is slidably connected to the limiting frame, the limiting frame is provided with a third electric telescopic rod, the third electric telescopic rod pushes the central column to move towards the scraper side, and the bottom of the limiting frame is fixedly connected to the handle.

[0011] A further improvement is made in that: the conveying mechanism includes a conveying hose, a first tapping mechanism, a second tapping mechanism, and a winding column; the mobile trolley is provided with a winding column for winding the conveying hose; the upper end of the conveying hose is connected to the paint spraying pipeline and the annular water tank through the first tapping mechanism; and the lower end of the conveying hose is connected to the water bucket and the paint bucket through the second tapping mechanism.

[0012] A further improvement is that the first tapping mechanism includes a first connecting pipe, a second connecting pipe, and a first solenoid valve. One end of the first connecting pipe is connected to the delivery hose, and the other end is connected to the paint spraying pipe. One end of the second connecting pipe is connected to the side wall of the first connecting pipe, and the other end is connected to the annular water tank. The second connecting pipe is equipped with a first solenoid valve.

[0013] A further improvement is that the second tapping mechanism includes a three-way solenoid valve, a water pump, and a paint pump. The water pump is located on one side of the water tank and is connected to the bottom of the water tank. The paint pump is located on one side of the paint tank and is connected to the bottom of the paint tank. The water pump and the paint pump are connected to the delivery hose through the three-way solenoid valve.

[0014] The beneficial effects of this invention are as follows: This invention integrates putty application, surface sanding, primer touch-up, and the self-cleaning function of the spraying mechanism into a single handheld processing mechanism. It is paired with an integrated mobile trolley to carry paint buckets, water buckets, and delivery pipelines. Workers no longer need to frequently change multiple separate tools. The trolley can be moved and transported as a whole, and the handheld mechanism can be stored and retrieved by inserting it into the trolley slot. This significantly shortens process changeover time and improves the overall efficiency of sheet metal repair work. The auxiliary pressing mechanism, composed of an elastic hinge structure and a third electric telescopic rod, can press the upper and lower parts of the putty board. The device provides uniform extrusion pressure at both ends, ensuring a tight fit between the scraper and flat or curved workpieces. This results in uniform putty application thickness and reduces unevenness. Electric-assisted pressure reduces hand strain and alleviates fatigue during prolonged operation. The grinding disc and elastic element are mechanically linked, allowing the grinding disc to be compressed and retracted into the groove during scraping. After locking the sliding seat, the grinding disc can be pushed out and fixed in place. The device allows for quick switching of grinding modes, and the limiting groove and limiting block precisely control the extension of the grinding disc, ensuring stable grinding without shaking. No additional disassembly or assembly of the grinding equipment is required, significantly enhancing the device's versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2This is a schematic diagram of the structure of the second tapping mechanism of the present invention; Figure 3 This is a schematic diagram of the handheld processing mechanism of the present invention; Figure 4 This is a cross-sectional view of the scraper blade of the present invention; Figure 5 This is a schematic diagram of the structure of the first tapping mechanism of the present invention; Figure 6 This is a schematic diagram of the auxiliary extrusion mechanism of the present invention.

[0016] The components include: 1. Mobile trolley; 2. Paint bucket; 3. Water bucket; 4. Scraper; 5. Central column; 6. Spray painting pipeline; 7. Paint cover; 8. Handle; 9. Atomizing nozzle; 10. Control button; 11. First hinge rod; 12. Second hinge rod; 13. Sliding seat; 14. Support spring; 15. Slide groove; 16. Grinding disc; 17. Grinding motor; 18. First wedge block; 19. Second wedge block; 20. First electric push rod; 21. Limiting groove; 22. Limiting block; 23. Adjusting rod; 24. Second electric telescopic rod; 25. Annular water tank; 26. High-pressure nozzle; 27. Limiting frame; 28. Third electric telescopic rod; 29. ​​Delivery hose; 30. Winding column; 31. First connecting pipe; 32. Second connecting pipe; 33. First solenoid valve; 34. Three-way solenoid valve; 35. Water pump; 36. Paint pump. Detailed Implementation

[0017] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0018] according to Figures 1-6 As shown, this embodiment proposes an integrated surface treatment device for putty application and primer touch-up, including a mobile cart 1, a paint bucket 2, a water bucket 3, a hand-held processing mechanism, and a conveying mechanism. The paint bucket 2 and the water bucket 3 are detachably mounted on the mobile cart 1. The mobile cart 1 is provided with a slot for placing the hand-held mechanism. A conveying mechanism for conveying paint and water is provided between the hand-held mechanism and the paint bucket 2 and the water bucket 3. The handheld processing mechanism includes a scraper 4, an elastic element, a central column 5, a paint spraying pipe 6, a paint cover 7, an adjustment mechanism, a cleaning element, a handle 8, and an auxiliary squeezing mechanism. The scraper 4 is located on one side of the central column 5, and an elastic element is provided between the scraper 4 and the central column 5 to squeeze the upper and lower ends of the scraper 4. The paint cover 7 is located on the other side of the central column 5, and an adjustment mechanism for adjusting the angle of the paint cover 7 is provided between the paint cover 7 and the central column 5. The paint spraying pipe 6 is provided inside the paint cover 7, and multiple sets of atomizing nozzles 9 are evenly distributed on the paint spraying pipe 6. A cleaning element is provided on the inner side of the paint spraying pipe 6 to clean the inner wall of the paint cover 7. The paint spraying pipe 6 and the cleaning element are both connected to the conveying mechanism. An auxiliary squeezing mechanism is provided at the bottom of the central column 5, and a handle 8 is provided at the bottom of the auxiliary squeezing mechanism. Multiple control buttons 10 are provided on the handle 8.

[0019] This equipment integrates the scraper blade 4, the paint cover 7 (which functions as a sprayer), and the paint spraying pipe 6 into a single handheld unit, making it convenient for workers to use during scraping and paint touch-up. It is also integrated into a mobile trolley 1 platform for easy movement during operation. The handheld processing mechanism is inserted into the mobile trolley 1 for easy access. During use, the scraper blade 4 is placed against the surface to be treated. At this time, the auxiliary pressing mechanism pushes the central column 5 to press the elastic element, providing pressure to both the top and bottom ends of the scraper blade 4, ensuring the scraper blade... 4. When the scraper blade 4 is pulled down to ensure good contact with the surface being treated, the repair effect will be better. The design of the auxiliary extrusion mechanism also makes it easier for workers to use. When applying paint to the surface, the paint cover 7 is placed over the surface to be repaired. The paint is then conveyed by the conveying mechanism and sprayed onto the surface through multiple sets of atomizing nozzles 9 on the paint spraying pipe 6. The paint is confined within the paint cover 7, which can effectively prevent overflow. At the same time, the paint cover 7 is also equipped with a cleaning device to clean the paint cover 7 and prevent the adverse effects caused by paint mixing during the next use.

[0020] The elastic element includes a first hinge rod 11, a second hinge rod 12, a sliding seat 13, a support spring 14, and a groove 15. One end of the first hinge rod 11 is hinged to the upper end of the scraper 4, and the other end is hinged to the second hinge rod 12. The upper end of the second hinge rod 12 is fixedly connected to the central column 5. The lower end of the inner sidewall of the scraper 4 is provided with a groove 15. The sliding seat 13 is slidably installed in the groove 15. The sliding seat 13 is hinged to the lower end of the second hinge rod 12. The bottom of the sliding seat 13 is provided with a support spring 14, which is located in the groove 15.

[0021] When the first hinge rod 11 and the second hinge rod 12 are subjected to pressure, the sliding seat 13 at the lower end of the second hinge rod 12 moves downward, while the support spring 14 contracts. The downward sliding seat 13 can provide good squeezing force to the lower end of the scraper 4, thereby ensuring the scraping effect.

[0022] A grinding disc 16 is provided at the middle of the outer wall of the scraper 4. A groove is provided on the outer wall of the scraper 4 to house the grinding disc 16. A grinding motor 17 is provided in the groove. A limiting member is provided between the grinding motor 17 and the scraper 4. A first wedge block 18 is provided on the inner side wall of the grinding motor 17. A second wedge block 19 is provided on the sliding seat 13. The second wedge block 19 is inserted from the bottom and squeezes the first wedge block 18 to push the grinding disc 16 out of the groove. A first electric push rod 20 is also provided in the slide groove 15 to limit the bottom of the sliding seat 13.

[0023] This device also integrates a grinding disc 16 on the scraper plate 4. At the same time, the grinding disc 16 and the elastic element are linked by the first wedge block 18 and the second wedge block 19. When scraping, the sliding seat 13 moves down to separate the second wedge block 19 from the first wedge block 18. At this time, the grinding disc 16 can be retracted into the groove under external force. When polishing, the position of the sliding seat 13 is locked by the first electric push rod 20. At this time, the elastic element no longer works, and the second wedge block 19 pushes the first wedge block 18 to push out and lock the grinding disc 16, thereby ensuring the stable operation of the polishing work. The setting of the grinding disc 16 further increases the multi-functionality of this device.

[0024] The limiting component includes a limiting groove 21 and a limiting block 22. The limiting block 22 is symmetrically arranged on both sides of the grinding motor 17. The scraper 4 is provided with a limiting groove 21 that is adapted to the limiting block 22. The limiting block 22 and the limiting groove 21 cooperate to limit the extension distance of the grinding disc 16.

[0025] The adjustment mechanism includes an adjustment rod 23 and a second electric telescopic rod 24. One end of the adjustment rod 23 is fixedly connected to the upper end of the central column 5, and the other end is hinged to the upper end of the paint cover 7. One end of the second electric telescopic rod 24 is hinged to the lower end of the central column 5, and the other end is hinged to the middle end of the paint cover 7.

[0026] The angle of the paint cover 7 can be adjusted by the second electric telescopic rod 24 to accommodate touch-up coating on the slanted surface.

[0027] The cleaning component includes an annular water tank 25 and a high-pressure nozzle 26. The paint cover 7 is in the shape of a truncated pyramid. The annular water tank 25 is adapted to the inner wall of the paint cover 7. Multiple sets of high-pressure nozzles 26 are evenly distributed on the annular water tank 25. The high-pressure nozzles 26 are inclined and their output ends face the inner wall of the paint cover 7.

[0028] The auxiliary extrusion mechanism includes a limiting frame 27 and a third electric telescopic rod 28. The lower end of the central column 5 is slidably connected to the limiting frame 27. The limiting frame 27 is provided with a third electric telescopic rod 28. The third electric telescopic rod 28 pushes the central column 5 to move towards the scraper plate 4. The bottom of the limiting frame 27 is fixedly connected to the handle 8.

[0029] By activating the third electric telescopic rod 28, the central column 5 is moved, making it easier for staff to use.

[0030] The conveying mechanism includes a conveying hose 29, a first tapping mechanism, a second tapping mechanism, and a winding column 30. The mobile trolley 1 is provided with a winding column 30 for winding the conveying hose 29. The upper end of the conveying hose 29 is connected to the paint spraying pipe 6 and the annular water tank 25 through the first tapping mechanism, and the lower end of the conveying hose 29 is connected to the water bucket 3 and the paint bucket 2 through the second tapping mechanism.

[0031] The first tapping mechanism includes a first connecting pipe 31, a second connecting pipe 32 and a first solenoid valve 33. One end of the first connecting pipe 31 is connected to the delivery hose 29 and the other end is connected to the paint spraying pipe 6. One end of the second connecting pipe 32 is connected to the side wall of the first connecting pipe 31 and the other end is connected to the annular water tank 25. The second connecting pipe 32 is equipped with the first solenoid valve 33.

[0032] The second tapping mechanism includes a three-way solenoid valve 34, a water pump 35, and a paint pump 36. The water pump 35 is located on one side of the water tank 3 and is connected to the bottom of the water tank 35. The paint pump 36 is located on one side of the paint tank 2 and is connected to the bottom of the paint tank 2. The water pump 35 and the paint pump 36 are connected to the delivery hose 29 through the three-way solenoid valve 34.

[0033] When the device is used for paint touch-up, the three-way solenoid valve 34 connects the paint pump 36 to the delivery hose 29, while the first solenoid valve 33 is closed. At this time, the paint is delivered to the spray pipe 6 and sprayed out. When cleaning, the three-way solenoid valve 34 connects the water pump 35 to the delivery hose 29, while the first solenoid valve 33 is opened. At this time, cleaning water is delivered into the annular water tank 25 and sprayed out of the spray pipe 6, thereby rinsing the delivery pipe, paint cover 7 and spray pipe 6. It is worth noting that in order to prevent the influence of mixing different paints, the paint bucket 2 and the three-way solenoid valve 34 should also be filled with water for cleaning.

[0034] The control button 10 is electrically connected to and performs signal control of the first electric telescopic rod, the second electric telescopic rod 24, the third electric telescopic rod 28, the first solenoid valve 33, the second solenoid valve, the three-way solenoid valve 34, the paint pump 36, and the water pump 35.

[0035] When using this integrated surface treatment equipment for putty application and primer touch-up, putty is applied to the treatment surface. Then, the lower end of the scraper 4 is placed against the upper end of the treatment surface. At this time, the auxiliary extrusion mechanism pushes the central column 5 to extrude the elastic element, so that it provides extrusion force to both the upper and lower ends of the scraper 4, ensuring the adhesion between the scraper 4 and the treatment surface. Then, the scraper 4 is pulled down to complete one application. This process is repeated. After the putty is applied and dried, the position of the sliding seat 13 is locked by the first electric push rod 20. At this time, the elastic element no longer works, and the second wedge block 19 pushes the first wedge block 18 to push out and lock the grinding disc 16. The grinding motor 17 is started, and the grinding disc 16 performs grinding work. After grinding, the paint cover 7 is placed on the touch-up surface. Then, the paint is conveyed by the conveying mechanism and sprayed onto the touch-up surface through multiple sets of atomizing nozzles 9 on the paint spraying pipeline 6.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated surface treatment device for putty application and primer touch-up, characterized in that: It includes a mobile cart (1), a paint bucket (2), a water bucket (3), a hand-held processing mechanism and a conveying mechanism. The paint bucket (2) and the water bucket (3) are detachably mounted on the mobile cart (1). The mobile cart (1) is provided with a slot for placing the hand-held mechanism. A conveying mechanism for conveying paint and water is provided between the hand-held mechanism and the paint bucket (2) and the water bucket (3). The handheld processing mechanism includes a scraper (4), an elastic element, a central column (5), a paint spraying pipe (6), a paint cover (7), an adjustment mechanism, a cleaning element, a handle (8), and an auxiliary squeezing mechanism. The scraper (4) is located on one side of the central column (5), and an elastic element is provided between the scraper (4) and the central column (5) to squeeze the upper and lower ends of the scraper (4). The paint cover (7) is located on the other side of the central column (5), and an adjustable paint cover is provided between the paint cover (7) and the central column (5). (7) Angle adjustment mechanism, the paint cover (7) is provided with a paint spraying pipe (6) inside, and multiple sets of atomizing nozzles (9) are evenly distributed on the paint spraying pipe (6). The inner side of the paint spraying pipe (6) is provided with a cleaning component for cleaning the inner wall of the paint cover (7). The paint spraying pipe (6) and the cleaning component are both connected to the conveying mechanism. The bottom of the central column (5) is provided with an auxiliary extrusion mechanism. The bottom of the auxiliary extrusion mechanism is provided with a handle (8). The handle (8) is provided with multiple sets of control buttons (10).

2. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 1, characterized in that: The elastic element includes a first hinge rod (11), a second hinge rod (12), a sliding seat (13), a support spring (14), and a groove (15). One end of the first hinge rod (11) is hinged to the upper end of the scraper (4), and the other end is hinged to the second hinge rod (12). The upper end of the second hinge rod (12) is fixedly connected to the central column (5). The lower end of the inner wall of the scraper (4) is provided with a groove (15). The sliding seat (13) is slidably installed in the groove (15). The sliding seat (13) is hinged to the lower end of the second hinge rod (12). The bottom of the sliding seat (13) is provided with a support spring (14), which is located in the groove (15).

3. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 2, characterized in that: A grinding disc (16) is provided at the middle of the outer wall of the scraper (4). A groove for storing the grinding disc (16) is provided on the outer wall of the scraper (4). A grinding motor (17) is provided in the groove. A limiting member is provided between the grinding motor (17) and the scraper (4). A first wedge block (18) is provided on the inner side wall of the grinding motor (17). A second wedge block (19) is provided on the sliding seat (13). The second wedge block (19) is inserted from the bottom and squeezes the first wedge block (18) to push the grinding disc (16) out of the groove. A first electric push rod (20) is also provided in the groove (15) to limit the bottom of the sliding seat (13).

4. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 3, characterized in that: The limiting component includes a limiting groove (21) and a limiting block (22). The limiting block (22) is symmetrically arranged on both sides of the grinding motor (17). The scraper (4) is provided with a limiting groove (21) that matches the limiting block (22). The limiting block (22) and the limiting groove (21) cooperate to limit the extension distance of the grinding disc (16).

5. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 1, characterized in that: The adjustment mechanism includes an adjustment rod (23) and a second electric telescopic rod (24). One end of the adjustment rod (23) is fixedly connected to the upper end of the central column (5), and the other end is hinged to the upper end of the paint cover (7). One end of the second electric telescopic rod (24) is hinged to the lower end of the central column (5), and the other end is hinged to the middle end of the paint cover (7).

6. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 1, characterized in that: The cleaning component includes an annular water tank (25) and a high-pressure nozzle (26). The paint cover (7) is in the shape of a truncated pyramid. The annular water tank (25) is adapted to the inner wall of the paint cover (7). Multiple sets of high-pressure nozzles (26) are evenly distributed on the annular water tank (25). The high-pressure nozzles (26) are inclined and their output ends face the inner wall of the paint cover (7).

7. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 1, characterized in that: The auxiliary extrusion mechanism includes a limiting frame (27) and a third electric telescopic rod (28). The lower end of the central column (5) is slidably connected to the limiting frame (27). The limiting frame (27) is provided with a third electric telescopic rod (28). The third electric telescopic rod (28) pushes the central column (5) to move towards the scraper (4). The bottom of the limiting frame (27) is fixedly connected to the handle (8).

8. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 6, characterized in that: The conveying mechanism includes a conveying hose (29), a first tapping mechanism, a second tapping mechanism, and a winding column (30). The mobile trolley (1) is provided with a winding column (30) for winding the conveying hose (29). The upper end of the conveying hose (29) is connected to the paint spraying pipeline (6) and the annular water tank (25) through the first tapping mechanism. The lower end of the conveying hose (29) is connected to the water bucket (3) and the paint bucket (2) through the second tapping mechanism.

9. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 8, characterized in that: The first tapping mechanism includes a first connecting pipe (31), a second connecting pipe (32) and a first solenoid valve (33). One end of the first connecting pipe (31) is connected to the delivery hose (29) and the other end is connected to the paint spraying pipe (6). One end of the second connecting pipe (32) is connected to the side wall of the first connecting pipe (31) and the other end is connected to the annular water tank (25). The second connecting pipe (32) is equipped with the first solenoid valve (33).

10. The integrated surface treatment equipment for putty application and primer touch-up as described in claim 8, characterized in that: The second tapping mechanism includes a three-way solenoid valve (34), a water pump (35) and a paint pump (36). The water pump (35) is located on one side of the water tank (3) and is connected to the bottom of the water tank (35). The paint pump (36) is located on one side of the paint tank (2) and is connected to the bottom of the paint tank (2). The water pump (35) and the paint pump (36) are connected to the delivery hose (29) through the three-way solenoid valve (34).

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