A kind of axle robot mixed gas spraying gun pressure regulating device
Patent Information
- Application Number
- CN202522112343.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-09-30
AI Technical Summary
[0004]为了弥补以上不足，本实用新型提供了一种车桥机器人混气喷涂的喷枪调压装置，旨在改善了现有技术中“车桥机器人混气喷涂喷枪调压方式存在压力不稳定、操作不便以及结构复杂”的问题
1、本实用新型中，通过装置通过连接组件与轴针组件的协同作用，可实时响应气源压力波动，当进气压力变化时，隔膜件带动传递件a、传递件b联动，推动活塞与阀芯调整开度，确保漆雾雾化均匀、附着力稳定，显著提升车桥喷涂的外观质量与防护性能。气压表可实时监测压力值，便于操作人员直观把控，减少因压力不稳定造成的返工。
Smart Images
Figure CN224894427U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spray gun pressure regulating equipment, and in particular to a spray gun pressure regulating device for mixed-air spraying of vehicle and axle robots. Background Technology
[0002] In the manufacturing process of vehicle axles, the spraying process plays a crucial role in the protection and appearance quality of the axles. With the development of industrial automation, the air-mixed spraying technology for vehicle axles has been widely used. It combines the advantages of air spraying and airless spraying. By spraying filtered and pressure-regulated compressed air, the paint atomizes finer and distributes more evenly. At the same time, it forms an air curtain to constrain the spraying range, which greatly improves the spraying effect and efficiency.
[0003] However, existing air-mixed spray guns for axle robots have some shortcomings in terms of pressure regulation. Firstly, the spray gun is directly connected to the air source. Due to significant pressure fluctuations, when the compressed air pressure is too high, the sprayed paint mist has strong force, easily causing paint mist rebound, leading to decreased paint adhesion and affecting spraying quality. When the compressed air pressure is too low, the paint mist is difficult to spray onto the coating surface, failing to meet spraying requirements. Secondly, existing pressure regulation methods mostly require users to conduct extensive experiments before actual spraying, manually adjusting the opening degree of the airflow valve. This operation is complex and difficult to control accurately, wasting time and materials, and failing to guarantee the consistency and stability of each spray. Furthermore, traditional spray gun pressure regulation devices have complex structures and high maintenance costs, making them unsuitable for the high-intensity, high-efficiency work requirements of axle production lines. Summary of the Invention
[0004] To overcome the above shortcomings, this utility model provides a spray gun pressure regulating device for mixed-gas spraying of vehicle axle robots, which aims to improve the problems of "unstable pressure, inconvenient operation and complex structure of the spray gun pressure regulating method for mixed-gas spraying of vehicle axle robots" in the prior art.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot, comprising an air valve, an air inlet connection hole provided at the upper part of the air valve, an air pressure gauge fixedly connected to the lower part of the air valve, a connecting assembly threadedly connected to the lower part of the air pressure gauge, an upper cylinder fixedly installed at the lower part of the connecting assembly, an air hole provided at the front side of the upper cylinder, a lower cylinder and a shaft pin assembly fixedly installed at the lower part of the upper cylinder by fixing bolts, an adjusting assembly fixedly installed at the lower part of the lower cylinder, and a discharge port and a feed port respectively provided at the front and rear sides of the lower cylinder; the connecting assembly includes a connecting plate, a fixed cylinder a and a fixed cylinder b, and the connecting plate, fixed cylinder a and fixed cylinder b are fixed by multiple sets of connecting bolts. The installation includes a diaphragm between the connecting plate and the fixed cylinder a, and between the fixed cylinder a and the fixed cylinder b. A transfer element a is slidably connected to the inner walls of both the fixed cylinder a and the fixed cylinder b. A sealing element is provided between the two sets of transfer elements a and the fixed cylinder a and the fixed cylinder b. A transfer element b is slidably connected to the upper inner wall of the upper cylinder body. The lower part of the transfer element a inside the fixed cylinder b abuts against the outer side of the transfer element b. The shaft pin assembly includes a diaphragm protection plate and a diaphragm sheet. The diaphragm protection plate and the diaphragm sheet are fixedly connected between the upper cylinder body and the lower cylinder body. The diaphragm protection plate is located on the lower side of the diaphragm sheet. A valve core is penetrated through the inner walls of the diaphragm protection plate and the diaphragm sheet. A piston is fixedly installed on the upper part of the valve core by a locking cap. The piston on the outer side of the valve core is connected to the inner wall of the lower cylinder body.
[0006] As a further description of the above technical solution: The adjusting assembly includes a sealing cover, which is threadedly connected to the lower inner wall of the lower cylinder. A movable component is slidably connected to the upper part of the sealing cover, and the movable component is elastically connected to the sealing cover by a spring. A flow guide bushing is provided on the upper part of the sealing cover, and a connecting sleeve is provided on the upper part of the flow guide bushing. Sealing rings are provided on the outer sides of both the connecting sleeve and the sealing cover. The outer side of the sealing ring abuts against the inner wall of the lower cylinder. The lower part of the valve core passes through the connecting sleeve and the flow guide bushing and contacts the upper side of the movable component.
[0007] As a further description of the above technical solution: Multiple through holes are formed on the outer side of the flow guide bushing. Insertion holes are formed on the upper part of both the connecting sleeve and the flow guide bushing. The insertion hole of the flow guide bushing is larger than that of the connecting sleeve. The upper part of the moving part slides tightly against the inner wall of the insertion hole of the flow guide bushing.
[0008] As a further description of the above technical solution: The upper part of the movable component is cone-shaped, and the diameter of the movable component is larger than the diameter of the insertion hole of the connecting sleeve.
[0009] As a further description of the above technical solution: The feed inlet is connected to the guide bushing.
[0010] As a further description of the above technical solution: The lower part of the diaphragm protective sheet is sealed to the lower cylinder body through a sealing component.
[0011] This utility model has the following beneficial effects: 1. In this utility model, the device, through the coordinated action of the connecting component and the shaft pin assembly, can respond in real time to fluctuations in air source pressure. When the intake pressure changes, the diaphragm component drives the transmission components a and b in linkage, pushing the piston and valve core to adjust the opening, ensuring uniform paint mist atomization and stable adhesion, significantly improving the appearance quality and protective performance of the axle coating. The pressure gauge can monitor the pressure value in real time, facilitating intuitive control by operators and reducing rework caused by unstable pressure.
[0012] 2. In this utility model, the components are fixedly connected by bolts, and multiple sealing elements, sealing rings and diaphragms are provided to ensure the overall sealing of the device, reduce the risk of air leakage and material leakage, and extend the service life. The diaphragm protection plate in the shaft pin assembly protects the diaphragm and reduces the wear of paint impurities on the core components. The connecting components adopt a modular design, which makes it easy to replace damaged diaphragm or transmission components individually and reduce maintenance costs. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model; Figure 2 This is a rear view of the three-dimensional structure of the overall device in this utility model; Figure 3 This is a three-dimensional structural disassembly diagram of the overall device in this utility model; Figure 4 This is a three-dimensional structural disassembly diagram of the central shaft pin assembly of this utility model; Figure 5 This is a three-dimensional structural disassembly diagram of the adjustment component in this utility model.
[0014] Legend: 1. Air valve; 2. Air pressure gauge; 3. Connecting assembly; 31. Connecting plate; 32. Diaphragm component; 33. Fixed cylinder a; 34. Transmission component a; 35. Sealing component; 36. Fixed cylinder b; 37. Connecting bolt; 38. Transmission component b; 4. Upper cylinder body; 5. Lower cylinder body; 6. Fixed bolt; 7. Shaft pin assembly; 71. Valve core; 72. Diaphragm protection plate; 73. Diaphragm plate; 74. Piston; 75. Locking cap; 8. Adjusting assembly; 81. Connecting sleeve; 82. Flow guide bushing; 83. Sealing ring; 84. Moving component; 85. Spring; 86. Sealing cover; 9. Discharge port; 10. Inlet port. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a spray gun pressure regulating device for air-fuel spraying of a vehicle axle robot. It includes an air valve 1, serving as a control component for air source access. An upper air inlet connection hole connects to an external compressed air source. The opening and closing of the valve controls the flow rate and volume of the airflow, marking the starting point for pressure regulation. The upper part of the air valve 1 has an air inlet connection hole, and a pressure gauge 2 is fixedly connected to the lower part of the air valve 1. This gauge monitors and displays the air pressure value within the device in real time, allowing operators to intuitively grasp the current pressure status and providing data reference for pressure regulation operations, ensuring the pressure meets spraying requirements. A connecting component 3 is threadedly connected to the lower part of the pressure gauge 2, and an upper cylinder 4 is fixedly installed at the lower part of the connecting component 3. The upper cylinder 4 has an air hole on its front side. The upper cylinder 4 serves as the mounting carrier for the connecting component 3 and the shaft pin assembly 7. The air hole on the front side can balance the internal air pressure and provide sliding space for the transmission component b38 to achieve pressure transmission. The lower cylinder 5 and the shaft pin assembly 7 are fixedly connected and installed on the lower part of the upper cylinder 4 by fixing bolts 6. The lower cylinder 5 integrates the discharge port 9 and the inlet port 10, which are the channels for the output of paint. At the same time, it provides the installation reference for the shaft pin assembly 7 and the adjustment component 8, forming a closed pressure adjustment cavity. The adjustment component 8 is fixedly installed on the lower part of the lower cylinder 5. The discharge port 9 and the inlet port 10 are respectively opened on the front and rear sides of the lower cylinder 5. The inlet port 10 is connected to the external paint supply system to introduce paint into the lower cylinder 5.
[0017] Reference Figure 1 - Figure 3The connecting assembly 3 includes a connecting plate 31, a fixed cylinder a33, and a fixed cylinder b36. The connecting plate 31, fixed cylinder a33, and fixed cylinder b36 are fixedly installed by multiple sets of connecting bolts 37, providing installation space for the diaphragm component 32 and the transmission component a34, thus achieving stable transmission of air pressure from the air valve 1 to the upper cylinder 4. A diaphragm component 32 is provided between the connecting plate 31 and the fixed cylinder a33, and between the fixed cylinder a33 and the fixed cylinder b36. The connecting bolts 37 penetrate the diaphragm component 32. The diaphragm component 32 is the core component for pressure sensing. When the air pressure fluctuates, the diaphragm component 32 undergoes elastic deformation, pushing the transmission component a34 to move, thus achieving mechanical transmission of the pressure signal. The inner walls of the fixed cylinder a33 and the fixed cylinder b36 are slidably connected by transmission components. The transfer member a34, with a T-shaped cross-section, sequentially transmits the deformation force of the diaphragm 32. Finally, the transfer member a34 inside the fixed cylinder b36 pushes the transfer member b38, realizing the transmission of pressure signal to the shaft needle assembly 7. A sealing member 35 is provided between the two sets of transfer members a34 and the fixed cylinders a33 and b36 to prevent airflow leakage from the gap, ensuring the accuracy of pressure transmission and the sealing of the device. The transfer member b38 is slidably connected to the upper inner wall of the upper cylinder 4, receiving the thrust of the transfer member a34 inside the fixed cylinder b36 and transmitting the pressure to the piston 74 of the shaft needle assembly 7, realizing further transmission of pressure signal. The lower part of the transfer member a34 inside the fixed cylinder b36 abuts against the outer side of the transfer member b38.
[0018] Reference Figure 3 and Figure 4 The shaft needle assembly 7 includes a diaphragm protector 72 and a diaphragm 73. The diaphragm protector 72 and the diaphragm 73 are fixedly connected between the upper cylinder 4 and the lower cylinder 5. The diaphragm 73 has elastic deformation capability and can sense the pressure difference between the upper and lower cavities, assisting the valve core 71 in stabilizing its position. The diaphragm protector 72 is used to prevent paint impurities from wearing down the diaphragm 73, extending its service life. The diaphragm protector 72 is located on the lower side of the diaphragm 73. The valve core 71 penetrates through the inner walls of the diaphragm protector 72 and the diaphragm 73. 2 and diaphragm 73, the lower part contacts the moving part 84 of the regulating component 8, and the upper part receives the pressure signal through piston 74 to apply pressure to the regulating component 8. The upper part of valve core 71 is fixedly installed with piston 74 through locking cap 75, which cooperates with the inner wall of upper cylinder 4 to form a pressure chamber, receive the pressure transmitted by transmission part b38, and push valve core 71 to move axially. The piston on the outside of valve core 71 is connected to the inner wall of lower cylinder 5. Locking cap 75 fastens piston 74 to valve core 71 to prevent relative sliding between the two and ensure the stability of pressure transmission.
[0019] Reference Figure 4 and Figure 5The regulating component 8 includes a sealing cover 86, which is threaded onto the lower inner wall of the lower cylinder 5, sealing the bottom of the regulating component 8. A movable part 84 is slidably connected to the upper part of the sealing cover 86. When the valve core 71 is pushed downward by pressure, the movable part 84 compresses the spring 85. The movable part 84 conically disengages from the connecting sleeve 81, thereby opening the insertion hole of the connecting sleeve 81, realizing the control of paint flow and improving the adjustment accuracy. The movable part 84 and the sealing cover 86 are elastically connected by the spring 85, which is used to drive the movable part 84 to reset. A flow guide bushing 82 is provided on the upper part of the sealing cover 86. The through hole on the outer side of the flow guide bushing 82 is used to uniformly guide the paint introduced by the feed inlet 10 into the lower cylinder 5. The upper insertion hole provides sliding guidance for the moving part 84 to ensure its axial movement is stable. A connecting sleeve 81 is provided on the upper part of the flow guide bushing 82. The diameter of its insertion hole is larger than the diameter of the lower part of the valve core 71, which is used to discharge paint. Both the connecting sleeve 81 and the sealing cover 86 are provided with sealing rings 83 on their outer sides. The outer side of the sealing ring 83 abuts against the inner wall of the lower cylinder 5 to prevent paint or airflow from leaking through the gap and to ensure the sealing of the device. The lower part of the valve core 71 passes through the connecting sleeve 81 and the flow guide bushing 82 and contacts the upper side of the moving part 84. Multiple sets of through holes are opened through the outer side of the flow guide bushing 82. Insertion holes are opened through the upper parts of the connecting sleeve 81 and the flow guide bushing 82. The insertion hole of the flow guide bushing 82 is larger than the insertion hole of the connecting sleeve 81. The upper part of the moving part 84 slides tightly against the inner wall of the insertion hole of the flow guide bushing 82. The upper part of the movable part 84 is cone-shaped, and the diameter of the movable part 84 is larger than the diameter of the insertion hole of the connecting sleeve 81. The feed port 10 is connected to the guide bushing 82. The lower part of the diaphragm protection plate 72 is sealed to the lower cylinder 5 through a sealing component.
[0020] Working principle: During use, external compressed air enters the device through the air inlet connection hole of air valve 1. The air pressure gauge 2 displays the current air pressure value in real time. The operator can initially control the airflow and basic flow rate through air valve 1. When the air source pressure fluctuates, the diaphragm 32 in the connecting assembly 3 undergoes elastic deformation due to the pressure difference, pushing the transmission components a34 on both sides to slide inside the fixed cylinder. The transmission component a34 transmits the pressure signal sequentially to the transmission component b38 at the bottom of the fixed cylinder b36, which in turn pushes the piston 74 of the shaft needle assembly 7.
[0021] When the piston 74 is subjected to force, it drives the valve core 71 to move axially. The lower part of the valve core 71 contacts the moving part 84 of the adjusting component 8, pushing the moving part 84 to compress the spring 85. The external coating enters through the feed port 10 of the lower cylinder 5 and is evenly dispersed into the interior of the lower cylinder 5 through the through hole on the outside of the guide bushing 82, where it is initially mixed with the pressure-regulated compressed air.
[0022] The axial movement of the valve core 71 synchronously adjusts the opening and closing degree of the insertion hole of the connecting sleeve 81: When the valve core 71 moves downward, the upper conical part of the moving part 84 separates from the connecting sleeve 81, the insertion hole opens, and the paint flow increases; when the valve core 71 moves upward, the moving part 84 resets under the action of the spring 85, the upper conical part closes the insertion hole of the connecting sleeve 81, and the flow decreases. This process, through the cooperation of the valve core 71 and the moving part 84, achieves precise matching between the paint output and the air pressure.
[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot, characterized in that: Includes an air valve (1), the upper part of which is provided with an air inlet connection hole, the lower part of which is fixedly connected with a pressure gauge (2), the lower part of which is threadedly connected with a connecting assembly (3), the lower part of which is fixedly installed with an upper cylinder body (4), the front side of which is provided with an air hole, the lower part of which is fixedly connected with a lower cylinder body (5) and a shaft pin assembly (7) by a fixing bolt (6), the lower part of which is fixedly installed with an adjusting assembly (8), and the front and rear sides of which are respectively provided with a discharge port (9) and a feed port (10). The connecting assembly (3) includes a connecting plate (31), a fixed cylinder a (33) and a fixed cylinder b (36). The connecting plate (31), the fixed cylinder a (33) and the fixed cylinder b (36) are fixedly installed by multiple sets of connecting bolts (37). A diaphragm (32) is provided between the connecting plate (31) and the fixed cylinder a (33), and between the fixed cylinder a (33) and the fixed cylinder b (36). A transmission element a (34) is slidably connected to the inner wall of the fixed cylinder a (33) and the fixed cylinder b (36). A sealing element (35) is provided between the two sets of transmission elements a (34) and the fixed cylinder a (33) and the fixed cylinder b (36). A transmission element b (38) is slidably connected to the upper inner wall of the upper cylinder body (4). The lower part of the transmission element a (34) inside the fixed cylinder b (36) abuts against the outer side of the transmission element b (38). The shaft pin assembly (7) includes a diaphragm protection plate (72) and a diaphragm plate (73). The diaphragm protection plate (72) and the diaphragm plate (73) are fixedly connected between the upper cylinder body (4) and the lower cylinder body (5). The diaphragm protection plate (72) is located on the lower side of the diaphragm plate (73). A valve core (71) is provided through the inner wall of the diaphragm protection plate (72) and the diaphragm plate (73). A piston (74) is fixedly installed on the upper part of the valve core (71) through a locking cap (75). The piston on the outer side of the valve core (71) is connected to the inner wall of the lower cylinder body (5).
2. The spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot according to claim 1, characterized in that: The adjusting assembly (8) includes a sealing cover (86), which is threaded to the lower inner wall of the lower cylinder (5). A movable part (84) is slidably connected to the upper part of the sealing cover (86). The movable part (84) and the sealing cover (86) are elastically connected by a spring (85). A flow guide bushing (82) is provided on the upper part of the sealing cover (86). A connecting sleeve (81) is provided on the upper part of the flow guide bushing (82). A sealing ring (83) is provided on the outer side of both the connecting sleeve (81) and the sealing cover (86). The outer side of the sealing ring (83) abuts against the inner wall of the lower cylinder (5). The lower part of the valve core (71) passes through the connecting sleeve (81) and the flow guide bushing (82) and contacts the upper side of the movable part (84).
3. The spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot according to claim 2, characterized in that: Multiple through holes are provided on the outer side of the flow guide bushing (82). Insertion holes are provided on the upper part of both the connecting sleeve (81) and the flow guide bushing (82). The insertion hole of the flow guide bushing (82) is larger than the insertion hole of the connecting sleeve (81). The upper part of the moving part (84) slides tightly on the inner wall of the insertion hole of the flow guide bushing (82).
4. The spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot according to claim 2, characterized in that: The upper part of the movable part (84) is set in a cone shape, and the diameter of the movable part (84) is larger than the diameter of the insertion hole of the connecting sleeve (81).
5. The spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot according to claim 2, characterized in that: The feed inlet (10) is connected to the flow guide bushing (82).
6. The spray gun pressure regulating device for mixed-air spraying of a vehicle axle robot according to claim 1, characterized in that: The lower part of the diaphragm protection plate (72) is sealed to the lower cylinder body (5) by a sealing component.