Automatic air gun for manipulator
By designing the spray pipe and rotating fan blade adjustment structure for the automatic air gun of the robotic arm, the problems of dust caused by open nozzles and the inability to adjust the paint discharge port were solved, realizing flexible adjustment of the spraying range and accuracy, and improving spraying efficiency and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN MINGJIE INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-12
AI Technical Summary
The nozzles of existing automatic air guns are often open, allowing dust and impurities to enter and affecting the coating effect. At the same time, the paint discharge port cannot be adjusted, resulting in the coating range and accuracy not being suitable for different production needs, requiring frequent nozzle replacements and affecting efficiency.
An automatic air gun for robotic arms was designed, comprising a spray pipe, rotating fan blades, and a rotating sleeve. Through the cooperation of a pushing mechanism and a limiting mechanism, the opening and closing degree of the rotating fan blades inside the spray pipe can be adjusted to meet the spraying requirements of different workpiece surfaces.
It enables flexible adjustment of the spraying range and precision, improves spraying uniformity and positional accuracy, reduces the frequency of nozzle replacement, and enhances spraying efficiency and stability.
Smart Images
Figure CN224221594U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automatic air gun technology, specifically an automatic air gun for robotic arms. Background Technology
[0002] With the development of automation, automatic air guns are being used in conjunction with robotic arms more and more widely. Robotic arm painting can meet the needs of various working conditions and can perform contour painting on surfaces of different shapes. Therefore, robotic arm painting can improve work efficiency and ensure the consistency of the coating.
[0003] In actual use, the side nozzle of an automatic air gun is often completely open. This not only allows dust and impurities from the outside air to drift into the nozzle when the air gun is not in use, causing blockages and affecting the normal spraying of materials, but also means that the discharge port diameter cannot be adjusted for different production needs. The required spraying range and precision for different workpiece surfaces vary, and the relatively simple air gun's front discharge port cannot be adjusted, necessitating manual nozzle replacement by the operator. This is time-consuming, labor-intensive, and reduces spraying efficiency. Therefore, a new technical solution is needed to address this issue. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide an automatic air gun for robotic arms. This addresses the problem that in current automatic air guns, the side nozzle is often completely open during actual use. This not only allows dust and impurities from the outside air to drift into the nozzle when the air gun is not in use, causing blockages and affecting normal material spraying, but also prevents the adjustment of the discharge port diameter when the paint is conveyed through the air gun. Consequently, the required spraying range and precision for different production needs vary. The relatively simple structure of the air gun means the discharge port diameter cannot be adjusted, requiring the operator to replace the nozzle, which is time-consuming, labor-intensive, and affects the spraying efficiency.
[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: design an automatic air gun for a robotic arm, including a fixed frame, in which a spray pipe is fixedly installed through the fixed frame, and rotating fan blades are rotatably installed inside the side end of the spray pipe, and the number of rotating fan blades is six sets.
[0006] A rotating sleeve is rotatably sleeved on the outside of the spray pipe, and a fixed sleeve is fixedly sleeved on the outside of the spray pipe. The side end of the rotating sleeve is rotatably inserted into the inside of the fixed sleeve. A pushing mechanism is provided inside the rotating sleeve, and the pushing mechanism is connected to the rotating fan blades in a transmission.
[0007] The fixed sleeve is equipped with a limiting mechanism inside, and the limiting mechanism is connected to the rotating sleeve in a transmission manner.
[0008] Preferably, a transmission block is fixedly installed at the bottom of the fixed frame, and conveying pipes are fixedly installed on both sides of the outer side of the transmission block. The top of the side of the conveying pipe is fixedly connected to the spraying pipe. Feed pipes are fixedly installed at both ends of the side of the transmission block, and the top of the side of the feed pipe is fixedly connected to the bottom of the side of the conveying pipe.
[0009] Preferably, a support column is fixedly installed in the middle of the inner side of the spray pipe, a connecting frame is fixedly sleeved on the side of the support column away from the fixed sleeve, a fixed column is fixedly installed on the outer side of the connecting frame, and the top edge of the fixed column is fixedly connected to the inner wall of the spray pipe.
[0010] Preferably, the pushing mechanism includes a transmission plate, and a first rotating rod is rotatably inserted into the outer side of the support column away from the connecting frame via a bearing. The top edge of the first rotating rod is fixedly embedded in the inside of the rotating fan blade. A second rotating rod is fixedly installed at the middle of the other side of the rotating fan blade. A transmission plate is fixedly sleeved at the top edge of each second rotating rod. A sliding groove is vertically opened in the middle of the side of each transmission plate. A pushing rod is fixedly installed on the inner wall of the rotating sleeve, and the pushing rod slides through and is inserted into the sliding groove.
[0011] Preferably, the limiting mechanism includes an actuating ratchet and a limiting pawl. A connecting frame is fixedly installed on the top side of the rotating sleeve, and an actuating ratchet is fixedly installed on the outside of the connecting frame. A connecting rod is rotatably installed inside the top of the fixed sleeve via a bearing, and a limiting pawl is fixedly sleeved on the top side of the connecting rod.
[0012] Preferably, a hollow tube is fixedly installed on the top of the outer wall of the fixed sleeve, and a transmission rod is rotatably installed on the middle of the side of the hollow tube near the fixed sleeve. The top edge of the transmission rod is fixedly connected to the side edge of the connecting rod. A return torsion spring is movably sleeved on the outside of the transmission rod. A connecting plate is movably provided on the outside of the end of the hollow tube away from the fixed sleeve, and the top edge of the transmission rod is fixedly connected to the outside of the connecting plate. A push plate is fixedly installed on the other side of the connecting plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model features a support column inside the spray pipe, which, combined with a first rotating rod and a second rotating rod, rotatably positions the rotating fan blades inside the front side of the spray pipe. A transmission plate is fixedly sleeved on the outside of the second rotating rod. When the operator rotates the rotating sleeve to make it rotate outside the spray pipe, it simultaneously drives multiple sets of push rods located inside the rotating sleeve to rotate synchronously. After the push rods move, they can slide relative to each other in the sliding grooves opened inside the transmission plate. At the same time, the push rods can abut against the transmission plate, and the transmission plate can rotate synchronously on the outside of the spray pipe around the second rotating rod as the rotating sleeve rotates. Under the transmission action of the second rotating rod, multiple sets of rotating fan blades can be driven to rotate synchronously and in the same direction inside the spray pipe. This adjusts the opening and closing degree of the multiple sets of rotating fan blades inside the side end of the spray pipe, improving the uniformity and accuracy of spraying when spraying workpieces of different areas.
[0015] 2. This utility model features a connecting frame and a ratchet wheel on the outside of the rotating sleeve, and a limiting pawl inside the fixed sleeve. The limiting pawl, the reset torsion spring, and the push plate are connected synchronously by a transmission rod. This allows the operator to adjust the opening degree of the rotating fan blades simply by turning the rotating sleeve, which in turn drives the connecting frame and the ratchet wheel to rotate synchronously inside the fixed sleeve. The combined action of the ratchet wheel and the limiting pawl ensures that the ratchet wheel and the rotating sleeve can only rotate under external force, preventing arbitrary rotation and ensuring the stability of the fan blade opening degree adjustment. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0017] Figure 2 This is a schematic diagram of the internal structure of the left side end of the spray pipe of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the rotating sleeve of this utility model;
[0019] Figure 4 This is a schematic diagram of the internal structure of the fixing sleeve of this utility model;
[0020] Figure 5 This is a schematic diagram of the internal structure of the hollow tube of this utility model;
[0021] In the diagram: 1. Fixed frame; 11. Spray pipe; 12. Transmission block; 13. Conveying pipe; 14. Feed pipe;
[0022] 2. Support column; 21. First rotating rod; 22. Rotating fan blade; 23. Second rotating rod; 24. Rotating sleeve; 25. Push rod; 26. Transmission plate; 27. Sliding groove; 28. Connecting frame; 29. Fixed column;
[0023] 3. Fixed sleeve; 31. Hollow tube; 32. Connecting round frame; 33. Actuating ratchet; 34. Connecting rod; 35. Limiting pawl;
[0024] 4. Transmission rod; 41. Return torsion spring; 42. Connecting plate; 43. Hand push plate. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0026] Example 1: Automatic air gun for robotic arm, see [link / reference] Figures 1 to 5 A spray pipe 11 is fixedly installed inside the fixed frame 1. A transmission block 12 is fixedly installed at the bottom of the fixed frame 1. Conveying pipes 13 are fixedly installed on both sides of the transmission block 12, and the top of the side of the conveying pipe 13 is fixedly connected to the spray pipe 11. Feed pipes 14 are fixedly installed at both ends of the side of the transmission block 12, and the top of the side of the feed pipe 14 is fixedly connected to the bottom of the side of the conveying pipe 13.
[0027] When it is necessary to spray the workpiece surface using the spray pipe 11, after connecting the transmission block 12 and the side end of the robot drive arm, the position of the discharge port on the side end of the spray pipe 11 is adjusted under the operation of the robot and aligned with the outer wall of the workpiece. After connecting the paint output pipe and the feed pipe 14, the paint is transported through the feed pipe 14 to the inside of the conveying pipe 13 under the conveying action of the external pump, and then discharged into the spray pipe 11 for spraying and discharge preparation.
[0028] For details, see Figures 1 to 5 The spray pipe 11 has six sets of rotating fan blades 22 rotatably installed inside its side end. A rotating sleeve 24 is rotatably sleeved on the outside of the spray pipe 11. A fixed sleeve 3 is fixedly sleeved on the outside of the spray pipe 11, and the side end of the rotating sleeve 24 is rotatably inserted into the inside of the fixed sleeve 3. A support column 2 is fixedly installed in the middle of the inside of the spray pipe 11. A connecting frame 28 is fixedly sleeved on the side of the support column 2 away from the fixed sleeve 3. A fixed column 29 is fixedly installed on the outside of the connecting frame 28, and the top of the side of the fixed column 29 is fixedly connected to the inner wall of the spray pipe 11.
[0029] A first rotating rod 21 is rotatably inserted into the outer side of the support column 2 away from the connecting frame 28 via a bearing, and the top edge of the first rotating rod 21 is fixedly embedded in the inner side of the rotating fan blade 22. A second rotating rod 23 is fixedly installed in the middle of the other side of the rotating fan blade 22, and the second rotating rod 23 extends through the inside of the spray pipe 11 and rotates into the inside of the rotating sleeve 24 via a bearing. A transmission plate 26 is fixedly sleeved on the top edge of each second rotating rod 23, and the transmission plate 26 is movably disposed between the outer side of the spray pipe 11 and the inside of the rotating sleeve 24. A sliding groove 27 is vertically opened in the middle of the side of each transmission plate 26. A push rod 25 is fixedly installed on the inner side wall of the rotating sleeve 24, and the push rod 25 slides through and is inserted into the sliding groove 27.
[0030] When spraying and discharging the paint, the rotating sleeve 24 is continuously turned clockwise, causing it to rotate on the outside of the spray pipe 11. This causes the push rod 25, located inside the rotating sleeve 24, to rotate synchronously on the outside of the spray pipe 11. The push rod 25 can then slide relative to the sliding groove 27 inside the transmission plate 26. Simultaneously, the push rod 25 abuts against the transmission plate 26, causing the transmission plate 26 to rotate synchronously on the outside of the spray pipe 11 around the second rotating rod 23 as a center, along with the rotation of the rotating sleeve 24. Under the transmission action of the second rotating rod 23, multiple sets of rotating fan blades 22 can be driven to spray synchronously and in the same direction. The rotation inside the pipe 11 allows multiple sets of rotating fan blades 22 to rotate synchronously and in the same direction inside the spray pipe 11, opening up the spray. With continuous pushing of the rotating sleeve 24, multiple sets of rotating fan blades 22 can continuously rotate inside the spray pipe 11. After increasing the opening and closing degree of the rotating fan blades 22 inside the spray pipe 11, when it is necessary to quickly spray the outer wall surface of a large workpiece, the rotating fan blades 22 can be fully rotated and opened to increase the spray range and improve work efficiency. When dealing with small-area spraying tasks or spraying processing tasks with high spraying accuracy requirements, the opening degree of the petals can be appropriately reduced to decrease the spray range, thereby better controlling the spraying area and ensuring the spraying quality.
[0031] Further, see Figures 1 to 5 A connecting round frame 32 is fixedly installed on the top side of the rotating sleeve 24, and the connecting round frame 32 is rotatably installed inside the fixed sleeve 3. An abutting ratchet 33 is fixedly installed on the outside of the connecting round frame 32, and there are several sets of abutting ratchet 33. A connecting rod 34 is rotatably installed inside the top of the fixed sleeve 3 through a bearing, and the connecting rod 34 extends from the inside of the fixed sleeve 3 to its outside through a bearing. A limiting pawl 35 is fixedly sleeved on the top side of the connecting rod 34, and the limiting pawl 35 is movably set inside the fixed sleeve 3.
[0032] When the rotating sleeve 24 is turned clockwise to increase the opening and closing degree of the rotating fan blade 22 inside the spray pipe 11, the connecting circular frame 32 and the abutting ratchet 33 can be driven to rotate synchronously inside the fixed sleeve 3. During the rotation of the abutting ratchet 33, its outer arc surface contacts the outer arc surface of the limiting pawl 35. As the abutting ratchet 33 rotates, it abuts the limiting pawl 35, causing it to rotate. Simultaneously, the limiting pawl 35 can move out of the abutting ratchet 33, and at the same time, it can drive... The connecting rod 34 and the transmission rod 4 rotate synchronously, causing the reset torsion spring 41 to deform and recover its torsion. After the limiting pawl 35 moves away from the outside of the abutting ratchet 33, the torsion action of the reset torsion spring 41 provides the transmission rod 4 and the limiting pawl 35 with the corresponding recovery torsion force, so that the limiting pawl 35 can be re-inserted to the outside of the connecting round frame 32 to limit the abutting ratchet 33, so that the connecting round frame 32 and the rotating sleeve 24 cannot rotate counterclockwise, ensuring the stability of the opening and closing degree adjustment of the rotating fan blade 22.
[0033] It is worth noting that, see Figures 1 to 5 A hollow tube 31 is fixedly installed on the top of the outer wall of the fixed sleeve 3. A transmission rod 4 is rotatably installed on the middle of the side of the hollow tube 31 near the fixed sleeve 3. The top of the side of the transmission rod 4 is fixedly connected to the side of the connecting rod 34. The transmission rod 4 extends through the hollow tube 31 and rotates to the outside through the bearing. A return torsion spring 41 is movably sleeved on the outside of the transmission rod 4. The two ends of the return torsion spring 41 abut against the outside of the transmission rod 4 and the inner wall of the hollow tube 31, respectively. A connecting plate 42 is movably provided on the outside of the end of the hollow tube 31 away from the fixed sleeve 3. The top of the side of the transmission rod 4 is fixedly connected to the outside of the connecting plate 42. A push plate 43 is fixedly installed on the other side of the connecting plate 42.
[0034] When it is necessary to reduce the opening degree of the rotating fan blade 22, the push plate 43 can be pushed so that the push plate 43 rotates outside the hollow tube 31. At the same time, under the transmission action of the transmission rod 4 and the connecting rod 34, the limiting pawl 35 can be driven to rotate and move away from the outside of the connecting round frame 32. After the limiting pawl 35 loses its abutting and limiting force on the abutting ratchet 33, the rotating sleeve 24 will rotate counterclockwise. During the rotation of the rotating sleeve 24, the rotating fan blade 22 can be driven to return to its original rotation, thereby reducing the opening degree of the side end of the spray pipe 11.
[0035] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.
[0036] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. An automatic air gun for a robotic arm, comprising a fixed frame (1), characterized in that, A spray pipe (11) is fixedly installed inside the fixed frame (1), and a rotating fan blade (22) is rotatably installed inside the side end of the spray pipe (11), and the number of rotating fan blades is six. A rotating sleeve (24) is rotatably sleeved on the outside of the spray pipe (11), and a fixed sleeve (3) is fixedly sleeved on the outside of the spray pipe (11). The side end of the rotating sleeve (24) is rotatably inserted into the inside of the fixed sleeve (3). A pushing mechanism is provided inside the rotating sleeve (24), and the pushing mechanism is connected to the rotating fan blade (22) in a transmission connection. The fixed sleeve (3) is provided with a limiting mechanism inside, and the limiting mechanism is connected to the rotating sleeve (24) in a transmission connection.
2. The automatic air gun for a robotic arm as described in claim 1, characterized in that, The bottom of the fixed frame (1) is fixedly installed with a transmission block (12). Both sides of the transmission block (12) are fixedly installed with conveying pipes (13), and the top of the side of the conveying pipe (13) is fixedly connected to the spray pipe (11). Both ends of the side of the transmission block (12) are fixedly installed with feed pipes (14), and the top of the side of the feed pipe (14) is fixedly connected to the bottom of the side of the conveying pipe (13).
3. The automatic air gun for a robotic arm as described in claim 1, characterized in that, A support column (2) is fixedly installed in the middle of the inner side of the spray pipe (11). A connecting frame (28) is fixedly sleeved on the side of the support column (2) away from the fixed sleeve (3). A fixing column (29) is fixedly installed on the outer side of the connecting frame (28), and the top of the side of the fixing column (29) is fixedly connected to the inner wall of the spray pipe (11).
4. The automatic air gun for a robotic arm as described in claim 3, characterized in that, The pushing mechanism includes a transmission plate (26). The outer side of the support column (2) away from the connecting frame (28) is rotatably connected to a first rotating rod (21) through a bearing. The top edge of the first rotating rod (21) is fixedly embedded in the side of the rotating fan blade (22). The middle of the other side of the rotating fan blade (22) is fixedly installed with a second rotating rod (23). The top edge of each second rotating rod (23) is fixedly sleeved with a transmission plate (26). The middle of the side of each transmission plate (26) is vertically provided with a sliding groove (27). The inner wall of the rotating sleeve (24) is fixedly installed with a push rod (25), and the push rod (25) slides through and is inserted into the sliding groove (27).
5. The automatic air gun for a robotic arm as described in claim 4, characterized in that, The limiting mechanism includes an actuating ratchet (33) and a limiting pawl (35). A connecting round frame (32) is fixedly installed on the top side of the rotating sleeve (24). An actuating ratchet (33) is fixedly installed on the outside of the connecting round frame (32). A connecting rod (34) is rotatably installed inside the top of the fixed sleeve (3) through a bearing. The limiting pawl (35) is fixedly sleeved on the top side of the connecting rod (34).
6. The automatic air gun for a robotic arm as described in claim 5, characterized in that, A hollow tube (31) is fixedly installed on the top of the outer wall of the fixed sleeve (3). A transmission rod (4) is rotatably installed on the middle of the side of the hollow tube (3) near the fixed sleeve (3). The top of the side of the transmission rod (4) is fixedly connected to the side of the connecting rod (34). A reset torsion spring (41) is movably sleeved on the outside of the transmission rod (4). A connecting plate (42) is movably provided on the outside of the end of the hollow tube (31) away from the fixed sleeve (3). The top of the side of the transmission rod (4) is fixedly connected to the outside of the connecting plate (42). A push plate (43) is fixedly installed on the other side of the connecting plate (42).