Spraying apparatus based on a wrap-around spraying

Abstract

The application discloses a spraying device based on surround spraying, and belongs to the technical field of spraying. In order to solve the problem that in the long-term continuous operation process of a double-station rotary table paint spraying robot, the flow velocity of the airflow in the pipeline is prone to continuous deviation and is not easy to correct and stabilize the flow velocity in time due to the influence of factors such as reciprocating swing and bending of the gas supply hose of the mechanical arm and unstable airflow at the gas supply end, the application comprises a supporting seat, the top of the supporting seat is fixedly connected with a mechanical arm, one side of the mechanical arm is fixedly connected with a spray gun, one end of the spray gun is provided with a air cap, one side of the supporting seat is provided with a rotating assembly, and rotating load assemblies for loading and driving the notebook computer shell to rotate and spray are arranged at the two ends of the rotating assembly. The application can collect the airflow flow velocity value in the spray gun air cavity in real time, automatically fine-tune the air passage area when the airflow fluctuates slightly, stabilize the annular atomization air gap siphon negative pressure, keep the siphon flow of paint constant, avoid uneven paint mist, and improve the uniformity of the appearance of the notebook computer shell after spraying.

Description

Technical Field

[0001] This invention relates to the field of spraying technology, specifically to a spraying device based on surround spraying. Background Technology

[0002] With the rapid development of the consumer electronics industry, automated spraying processes are required for the surface protection and decoration of laptop casings. Laptop casings have complex three-dimensional structures such as bending and internal cavities. Spraying in one direction is prone to defects such as missed spraying and uneven film thickness. Therefore, a surround spraying equipment is usually used to complete the synchronous atomization painting of the entire circumference. The spraying equipment based on surround spraying usually uses a dual-station turntable painting robot as the core execution unit. The equipment is equipped with two sets of independent rotating tooling turntables. The robot is equipped with a multi-axis spray gun and moves around the outer circumference of the casing. One station continuously performs the surround spraying operation, while the other station simultaneously completes the unloading of finished products and the loading of blanks. The two stations alternate and cycle, which not only ensures 360° spraying of the casing without dead angles, but also eliminates the waiting time for loading and unloading, and adapts to the needs of large-scale continuous automated coating production of laptop casings.

[0003] During long-term continuous operation, the current dual-station rotary table painting robot is affected by factors such as the reciprocating swing and bending of the air supply hose and the unstable airflow at the air supply end. The airflow velocity inside the pipe is prone to continuous deviation, and it is not easy to correct and stabilize the flow velocity in time. This leads to uneven paint mist particles, resulting in poor appearance on the high-gloss surface of the laptop casing and increasing the product rework and scrap rate.

[0004] To address the above issues, a spraying device based on surround spraying is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a spraying device based on surround spraying. By using this invention, the problem in the above-mentioned background is that during long-term continuous operation of a dual-station turntable painting robot, the air velocity inside the pipe is prone to continuous deviation due to factors such as the reciprocating swing and bending of the air supply hose and the unstable airflow at the air supply end. It is not easy to correct and stabilize the flow velocity in time.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The spraying equipment based on surround spraying includes a support base, a robotic arm fixedly connected to the top of the support base, a spray gun fixedly connected to one side of the robotic arm, a wind cap at one end of the spray gun, a rotating component on one side of the support base, and rotating bearing components at both ends of the rotating component for supporting and driving the self-rotation spraying of the notebook shell. A gas velocity sensor for real-time detection of the airflow velocity in the airflow channel is installed inside the spray gun, and a dynamic airflow adjustment component for dynamically fine-tuning the airflow velocity is installed inside the spray gun.

[0007] Furthermore, the rotating assembly includes a first motor installed in the support base, a first gear fixedly connected to the output end of the first motor, the output end of the first motor being rotatably connected to the support base, a rotating frame rotatably connected to the top of the support base, a first gear ring fixedly connected inside the rotating frame, and the first gear meshing with the first gear ring. The rotating bearing assembly includes a second motor installed inside the rotating frame. The output end of the second motor is fixedly connected to a rotating seat. The rotating seat is rotatably connected to the rotating frame. A bearing net is fixedly connected to the top of the rotating seat. A limit frame is fixedly connected to the top of the bearing net.

[0008] Furthermore, the spray gun has an air inlet connector connected to one side, an L-shaped air inlet channel inside the spray gun, a conical channel on one side of the L-shaped air inlet channel, the air inlet connector connected to the L-shaped air inlet channel, an air chamber inside the spray gun, the L-shaped air inlet channel connected to the air chamber, a gas flow rate sensor installed inside the air chamber, several exhaust channels running through the spray gun, all of which are connected to the air chamber, a connecting channel running through the spray gun, the connecting channel connected to the air chamber, and an L-shaped liquid inlet channel running through the spray gun, one end of which is connected to a liquid outlet pipe. The vent has an exhaust hole at one end, which is coaxial with the liquid outlet pipe. A groove is provided on the inner wall of one end of the vent.

[0009] Furthermore, the dynamic airflow adjustment component includes a dual-axis motor installed inside the spray gun. One output end of the dual-axis motor is fixedly connected to a threaded rod, which is rotatably connected to the spray gun. A threaded block is threadedly connected to the outer wall of the threaded rod. A guide rod is fixedly connected inside the spray gun. The threaded block is slidably connected to the guide rod. A conical block is fixedly connected to one end of the threaded block, and the shape of the conical block matches the conical channel.

[0010] Furthermore, a snap-fit ​​assembly for elastically quick-release locking the wind cap is provided on one side of the spray gun. The snap-fit ​​assembly includes several grooves formed on the outer ring of one end of the spray gun, and elastic pieces are fixedly connected in each of the several grooves. The hood is equipped with a sealing component, which includes a mounting ring fixedly connected to the inner wall of the hood, and a rubber ring fixedly connected to one side of the mounting ring.

[0011] Furthermore, a circumferential rotating component is provided on one side of the dynamic airflow adjustment component. The circumferential rotating component includes a rotating shaft fixedly connected to the other end of the dual-axis motor. A second gear is fixedly connected to one end of the rotating shaft, and a rotating frame is rotatably connected to one end of the spray gun. A second gear ring is fixedly connected to the inner wall of the rotating frame, and the second gear meshes with the second gear ring.

[0012] Furthermore, a cleaning component for removing paint residue from the spray gun and the side of the air cap is connected to one side of the circumferential rotating assembly. The cleaning component includes several air outlet pipes evenly connected to one side of the rotating frame, and one end of each air outlet pipe is connected to a first nozzle.

[0013] Furthermore, a detection component for detecting the wear degree of the annular atomizing air gap at multiple points in the circumferential direction is provided on one side of the circumferential rotating component. The detection component includes a mounting rod installed on one side of the rotating frame, and a vision sensor is fixedly connected to one end of the mounting rod.

[0014] Furthermore, a real-time protection component for preventing paint mist from adhering to the detection component is connected to one side of the circumferential rotating component. The real-time protection component includes an L-shaped branch pipe connected to one side of the rotating frame, an air storage frame fixedly connected to one end of the vision sensor, the L-shaped branch pipe connected to the air storage frame, and several second nozzles evenly connected to one side of the air storage frame.

[0015] Furthermore, the spray gun is provided with an unlocking component, which includes an arc-shaped plate slidably connected inside the spray gun. Two pull rods are fixedly connected to one side of the arc-shaped plate, and a pressure ring is fixedly connected to one end of each of the two pull rods. The inner wall of the pressure ring is respectively attached to a number of elastic sheets.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By combining the gas flow rate sensor and the dynamic airflow adjustment component, the airflow rate inside the spray gun's air chamber can be collected in real time. When the airflow fluctuates slightly, the ventilation cross-sectional area can be automatically adjusted to stabilize the siphon negative pressure of the annular atomizing air gap, maintain a constant paint siphon flow rate, avoid uneven paint mist, and improve the uniformity of the laptop shell coating appearance. By setting up the dynamic airflow adjustment component, the main airflow channel can be quickly blocked to stop spraying under abnormal conditions such as sudden increase or decrease in airflow, avoiding the impact and wear of the air cap by turbulent airflow, preventing negative pressure imbalance from causing paint to spray randomly and resulting in batch defects, and simultaneously triggering the alarm to promptly remind staff to inspect the equipment; By cooperating with the circumferential rotating component and the detection component, the vision sensor can be driven to scan and detect the annular atomized air gap circumferentially, automatically collecting air gap expansion wear data, replacing the traditional manual shutdown and disassembly inspection mode, reducing manual maintenance costs, and improving the accuracy of wind cap wear recognition. Through the cooperation of the dynamic airflow adjustment component, the unlocking component and the snap-fit ​​component, when the air gap wear exceeds the threshold, the blockage block retracts and pushes the pressure ring down to press the elastic sheet, automatically unlocking and separating the air cap. No manual disassembly or assembly is required, avoiding continuous operation with excessive air gap and improving the equipment's continuous mass production capacity. Through the cooperation of the cleaning component, the real-time protection component and the circumferential rotating component, the compressed air is diverted to circumferentially blow away the dried paint residue in the air gap. During operation, an isolation air curtain is formed to isolate the suspended paint mist, prevent paint accumulation on the sensor lens, and ensure long-term accurate and reliable wear detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the spray gun of the present invention; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 for Figure 4 Enlarged view of point B; Figure 6 This is a side view of the spray gun structure of the present invention; Figure 7 This is a schematic diagram showing the connection relationship between the dynamic airflow adjustment component, circumferential rotation component, cleaning component, real-time protection component and unlocking component of the present invention. Figure 8 for Figure 7 Enlarged view of point C.

[0018] In the diagram: 1. Support base; 2. Robotic arm; 3. Rotating assembly; 31. First motor; 32. First gear; 33. First gear ring; 34. Rotating frame; 4. Rotating load-bearing assembly; 41. Second motor; 42. Rotating seat; 43. Load-bearing net; 44. Limiting frame; 5. Spray gun; 51. Air inlet connector; 52. L-shaped air inlet channel; 53. Conical channel; 54. Air chamber; 55. Exhaust channel; 56. Connecting channel; 57. L-shaped liquid inlet channel; 58. Liquid outlet pipe; 6. Wind cap; 61. Air hole; 62. Slot; 7. Gas flow rate sensor; 8. Dynamic airflow adjustment assembly; 81. Dual-axis motor; 82. Threaded rod; 83. Threaded block ; 84. Guide rod; 85. Conical plug; 9. Snap-fit ​​assembly; 91. Groove; 92. Elastic sheet; 10. Sealing assembly; 101. Mounting ring; 102. Rubber ring; 20. Circumferential rotation assembly; 201. Rotating shaft; 202. Second gear; 203. Rotating frame; 204. Second gear ring; 30. Cleaning assembly; 301. Air outlet pipe; 302. First nozzle; 40. Detection assembly; 401. Mounting rod; 402. Vision sensor; 50. Real-time protection assembly; 501. L-shaped branch pipe; 502. Air storage frame; 503. Second nozzle; 60. Unlocking assembly; 601. Arc plate; 602. Pull rod; 603. Pressure ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 As shown, the spraying equipment based on surround spraying includes a support base 1, which is used to support and fix various components. A controller is installed on one side of the support base 1, which can control various electrical components. A robotic arm 2 is fixedly connected to the top of the support base 1, and a spray gun 5 is fixedly connected to one side of the robotic arm 2. A wind cap 6 is provided at one end of the spray gun 5. An annular atomizing air gap is formed between the spray gun 5 and the wind cap 6, which utilizes Bernoulli negative pressure to siphon the paint liquid. A rotating component 3 is provided on one side of the support base 1. Rotating support components 4 are provided at both ends of the rotating component 3 for supporting and driving the self-rotating spraying of the notebook shell.

[0021] The rotating assembly 3 includes a first motor 31 installed in the support base 1. The output end of the first motor 31 is fixedly connected to a first gear 32. The output end of the first motor 31 is rotatably connected to the support base 1. A rotating frame 34 is rotatably connected to the top of the support base 1. A first gear ring 33 is fixedly connected inside the rotating frame 34. The first gear 32 meshes with the first gear ring 33. The rotating support assembly 4 includes a second motor 41 installed in the rotating frame 34. The output end of the second motor 41 is fixedly connected to a rotating seat 42. The rotating seat 42 is rotatably connected to the rotating frame 34. A support net 43 is fixedly connected to the top of the rotating seat 42. A limit frame 44 is fixedly connected to the top of the support net 43. The limit frame 44 can limit the horizontal displacement of the notebook shell and prevent it from shifting or misaligning during the self-rotation spraying.

[0022] In use, the laptop casing to be sprayed is placed in the rotating support component 4. Then, the controller makes the rotating component 3 rotate, thereby driving the laptop casing to complete the dual-station switching between the spraying station and the loading and unloading station. Then, the controller makes the rotating support component 4 drive the laptop casing to rotate slowly. At the same time, the controller makes the robotic arm 2 drive the spray gun 5 to move around the outer contour of the casing, thereby realizing the surrounding spraying of the laptop casing.

[0023] To address the technical problem of persistent velocity deviations in airflow within pipelines and the difficulty in timely correcting for stable velocity, such as... Figure 1 and Figures 3-7 As shown, the following preferred technical solutions are provided: The spray gun 5 is equipped with a gas velocity sensor 7 for real-time detection of the airflow velocity in the airflow channel, and a dynamic airflow adjustment component 8 for dynamic fine-tuning of the airflow velocity is also provided inside the spray gun 5.

[0024] During the spraying process, if the gas flow rate sensor 7 detects a small fluctuation in the gas flow rate over a short period of time, such as an increase or decrease in flow rate, the controller will cause the dynamic airflow adjustment component 8 to move rapidly within the spray gun 5 until the detected value of the gas flow rate sensor 7 returns to the preset standard flow rate value. This keeps the siphon negative pressure of the annular atomizing air gap constant, thereby dynamically adjusting the air supply flow rate. Compared with the existing technology that only provides fixed air supply and is not easy to adaptively compensate for small airflow fluctuations, this technology can stabilize the airflow in real time, ensure a constant siphon flow rate of the paint liquid, and avoid uneven paint mist.

[0025] During the spraying process, if the gas flow rate sensor 7 detects a sudden increase, decrease, or excessive fluctuation in the gas flow rate, the controller stops supplying external industrial dry filtered compressed air. Simultaneously, the dynamic airflow adjustment component 8 moves rapidly in the forward direction within the spray gun 5 to quickly block the airflow channel, thereby achieving rapid cutoff and termination of the spraying operation due to disordered air supply. This avoids the impact of extreme airflow on the annular atomizing air gap, which would aggravate wear, and also prevents negative pressure imbalance from causing paint to spray randomly and resulting in poor batch spraying of the laptop casing. Subsequently, an alarm is triggered to remind the user to perform maintenance. The alarm is existing technology and is not shown in the figure.

[0026] like Figures 3-6 As shown, the spray gun 5 has an air inlet connector 51 connected to one side, which connects to an external industrial drying and filtering compressed air pipeline, allowing the introduction of clean, impurity-free air. An L-shaped air inlet channel 52 is provided inside the spray gun 5, with a tapered channel 53 on one side. The air inlet connector 51 connects to the L-shaped air inlet channel 52. An air chamber 54 is provided inside the spray gun 5, and the L-shaped air inlet channel 52 connects to the air chamber 54. A gas flow rate sensor 7 is installed inside the air chamber 54. The spray gun 5 has several exhaust channels 55 that are connected to the air chamber 54. The spray gun 5 also has a connecting channel 56 that is connected to the air chamber 54. The spray gun 5 has an L-shaped liquid inlet channel 57 that is connected to one end of a liquid outlet pipe 58. One end of the liquid outlet pipe 58 is tapered and can be matched with the exhaust hole 61 of the air cap 6 to form a circumferentially uniform annular atomizing air gap and stabilize the negative pressure siphon suction.

[0027] like Figure 3 and Figure 5 As shown, an exhaust hole 61 is provided through one end of the vent cap 6. The exhaust hole 61 is coaxially arranged with the liquid outlet pipe 58. A groove 62 is provided on the inner wall of one end of the vent cap 6.

[0028] like Figure 4 and Figure 7As shown, the dynamic airflow adjustment component 8 includes a dual-axis motor 81 installed inside the spray gun 5. The dual-axis motor 81 is an independently speed-controlled servo dual-axis motor 81, which can drive two output shafts to rotate independently. The dual-axis motor 81 has a self-locking function. One of the output ends of the dual-axis motor 81 is fixedly connected to a threaded rod 82. The threaded rod 82 is rotatably connected to the spray gun 5. A threaded block 83 is threadedly connected to the outer wall of the threaded rod 82. A guide rod 84 is fixedly connected inside the spray gun 5. The threaded block 83 is slidably connected to the guide rod 84. A conical block 85 is fixedly connected to one end of the threaded block 83. An integrated wear-resistant sealing silicone is provided on the outer wall of the conical block 85, which can improve the sealing effect. The shape of the conical block 85 matches the conical channel 53.

[0029] In use, the laptop casing to be sprayed is placed in the carrier net 43. Then, the controller causes the first motor 31 to drive the first gear 32 to rotate. Through the meshing of the first gear 32 and the first gear ring 33, the first gear ring 33 and the rotating frame 34 rotate synchronously, thereby driving the laptop casing to complete the dual-station switching between the spraying station and the loading and unloading station. Then, the controller causes the second motor 41 to drive the rotating seat 42, the carrier net 43 and the laptop casing to rotate slowly. At the same time, the controller causes the robotic arm 2 to drive the spray gun 5 to move around the outer contour of the casing, thereby realizing the circumferential spraying of the laptop casing.

[0030] During the spraying process, if the gas flow rate sensor 7 detects a small fluctuation in the gas flow rate over a short period of time, such as an increase or decrease in flow rate, the controller will cause the dual-axis motor 81 to drive the threaded rod 82 to rotate. The threaded block 83 is connected to the threaded rod 82 through the threaded connection. Under the limit of the guide rod 84, the threaded block 83 drives the conical block 85 to move away from or closer to the conical channel 53. This allows for fine adjustment of the effective ventilation cross-sectional area of ​​the conical channel 53 until the detection value of the gas flow rate sensor 7 returns to the preset standard flow rate value. This keeps the siphon negative pressure of the annular atomizing air gap constant, thereby dynamically adjusting the air supply flow rate and compensating for small fluctuations in the air supply flow rate. This stabilizes the flow rate inside the air chamber 54. Compared with the existing technology that only has a fixed air supply and is not easy to adaptively compensate for small air flow fluctuations, this technology can stabilize the air flow rate in real time, ensure a constant siphon flow rate of the paint liquid, and avoid uneven paint mist.

[0031] During the spraying process, if the gas flow rate sensor 7 detects a sudden increase, decrease, or excessive fluctuation in the gas flow rate, the controller stops supplying external industrial dry and filtered compressed air. Simultaneously, the dual-axis motor 81 drives the threaded rod 82 to rotate, and through the threaded connection between the threaded block 83 and the threaded rod 82, the threaded block 83, under the limit of the guide rod 84, drives the conical block 85 to move rapidly in the forward direction, quickly sealing several exhaust channels 55 and connecting channels 56. This achieves rapid cutoff and termination of the spraying operation due to disordered air supply, avoids the impact of extreme airflow on the annular atomizing air gap, which would aggravate wear, and prevents negative pressure imbalance from causing paint to spray randomly and resulting in poor batch spraying of the laptop casing. Subsequently, an alarm is triggered to remind the user to perform maintenance. The alarm is existing technology and is not shown in the figure.

[0032] To address the technical issue of severe wear in the annular atomizing air gap between the spray gun 5 and the air cap 6 without affecting periodic testing, such as... Figures 3-8 As shown, the following preferred technical solutions are provided: A snap-fit ​​assembly 9 for elastically and quickly locking the air cap 6 is provided on one side of the spray gun 5. A sealing assembly 10 is provided inside the air cap 6. A circumferential rotating assembly 20 is provided on one side of the dynamic airflow adjustment assembly 8. A cleaning assembly 30 for removing paint residue from one side of the spray gun 5 and the air cap 6 is connected to one side of the circumferential rotating assembly 20. A detection assembly 40 for circumferentially multi-point detection of the wear degree of the annular atomizing air gap is provided on one side of the circumferential rotating assembly 20. A real-time protection assembly 50 for preventing paint mist adhesion detection assembly 40 is connected to one side of the circumferential rotating assembly 20. An unlocking assembly 60 is provided inside the spray gun 5.

[0033] After a period of spraying, periodic inspections are performed. The dynamic airflow adjustment component 8 drives the circumferential rotation component 20 and the detection component 40 to rotate synchronously circumferentially, enabling the detection of the annular atomized air gap formed between the spray gun 5 and the air cap 6. This allows for circumferential wear scanning and judgment of the annular atomized air gap, accurately identifying the wear condition of the spray gun 5 and the air cap 6. When the detection component 40 detects that the wear expansion of the annular atomized air gap between the spray gun 5 and the air cap 6 exceeds the normal threshold, the controller stops the delivery of external industrial dry filtered compressed air, and simultaneously causes the dynamic airflow adjustment component 8 to rapidly rotate within the spray gun 5. The rapid reverse motion quickly blocks the airflow channel, and after moving a certain distance, it pushes the unlocking component 60 to move synchronously, causing the unlocking component 60 to press down and engage the component 9, so that the air cap 6 and the spray gun 5 are elastically engaged, unlocked, and automatically separated. It can automatically cut off the air supply and complete the synchronous disassembly of the air cap 6, preventing the air gap from exceeding the wear limit from continuing to operate. Compared with the existing technology that relies on manual shutdown and disassembly for inspection and requires manual disassembly and replacement of the air cap 6, it can realize the automatic detection of the annular atomizing air gap and automatic disassembly of faults, reduce manual operation and maintenance, improve the continuous spraying mass production capacity of the equipment, and then trigger an alarm to remind the user to perform maintenance.

[0034] like Figure 5 and Figure 6 As shown, the snap-fit ​​assembly 9 includes several grooves 91 formed on the outer ring of one end of the spray gun 5. One side of the inner wall of the groove 91 is set as arc, which can conform to the curved surface of the elastic sheet 92 to guide the deformation, reduce the friction loss of the elastic sheet 92 when opening and closing, and improve the smoothness of disassembly and assembly. The elastic sheet 92 is fixedly connected in each of the several grooves 91. The elastic sheet 92 is made of a highly elastic material, which can repeatedly open and close elastically without fatigue failure, and stably snap-fit ​​the air cap 6.

[0035] like Figure 5 As shown, the sealing assembly 10 includes a mounting ring 101 fixedly connected to the inner wall of the vent cap 6. A rubber ring 102 is fixedly connected to one side of the mounting ring 101. The rubber ring 102 is hollow and elastic. Both sides of the rubber ring 102 are serrated, which can be squeezed together to improve the sealing performance.

[0036] like Figure 4 , Figure 5 and Figure 7 As shown, the circumferential rotating assembly 20 includes a rotating shaft 201 fixedly connected to the other end of the dual-axis motor 81. A second gear 202 is fixedly connected to one end of the rotating shaft 201, and a rotating frame 203 is rotatably connected to one end of the spray gun 5. The rotating frame 203 is connected to the spray gun 5 through a sealed bearing, which can ensure that the rotating frame 203 rotates smoothly in the circumferential direction, while sealing and blocking the airflow. A second gear ring 204 is fixedly connected to the inner wall of the rotating frame 203, and the second gear 202 meshes with the second gear ring 204.

[0037] like Figure 7 and Figure 8 As shown, the cleaning component 30 includes a plurality of air outlet pipes 301 uniformly connected to one side of the rotating frame 203, and one end of each of the plurality of air outlet pipes 301 is connected to a first nozzle 302.

[0038] During the spraying process, the airflow enters the rotating frame 203 through the L-shaped air inlet channel 52, the air chamber 54 and the connecting channel 56, and then enters several air outlet pipes 301 and is sprayed out by the first nozzle 302. The first nozzle 302 is oriented directly towards the spray gun 5 and the air cap 6, thereby achieving circumferential blowing of the outer periphery of the annular atomized air gap, cleaning the attached dried paint residue, and preventing the paint residue from changing the air gap pore size.

[0039] like Figure 8 As shown, the detection component 40 includes a mounting rod 401 installed on one side of the rotating frame 203. A vision sensor 402 is fixedly connected to one end of the mounting rod 401, and a ring-shaped supplementary light is installed at one end of the vision sensor 402. This optimizes image quality and improves the accuracy of air gap wear size recognition. The ring-shaped supplementary light is existing technology and is not shown in the figure. Figure 8 As shown, the real-time protection component 50 includes an L-shaped branch pipe 501 connected to one side of the rotating frame 203, a vision sensor 402 is fixedly connected to an air storage frame 502 at one end, the L-shaped branch pipe 501 is connected to the air storage frame 502, and a number of second nozzles 503 are evenly connected to one side of the air storage frame 502.

[0040] During the spraying process, the airflow enters the rotating frame 203 through the L-shaped air inlet channel 52, the air chamber 54 and the connecting channel 56, and enters the air storage frame 502 through the L-shaped branch pipe 501. It is then sprayed out by several second nozzles 503, which can form an air curtain in real time, thereby isolating the suspended paint mist, blocking the paint mist from adhering to the lens of the vision sensor 402, and preventing paint accumulation from causing detection misjudgment.

[0041] like Figure 5 and Figure 7 As shown, the detection and unlocking assembly 60 includes an arc-shaped plate 601 slidably connected to the spray gun 5. Two pull rods 602 are fixedly connected to one side of the arc-shaped plate 601. A pressure ring 603 is fixedly connected to one end of each pull rod 602. The inner wall of the pressure ring 603 is respectively attached to a plurality of elastic sheets 92.

[0042] After a period of spraying, periodic inspections are performed. The other output of the dual-axis motor 81 drives the rotating shaft 201 and the second gear 202 to rotate. Through the meshing of the second gear 202 and the second gear ring 204, the rotating frame 203, mounting rod 401, and vision sensor 402 rotate synchronously circumferentially. This allows for the detection of the annular atomized air gap formed between the spray gun 5 and the air cap 6, enabling circumferential wear scanning and judgment of the annular atomized air gap. It can accurately identify the wear condition of the spray gun 5 and the air cap 6. When the vision sensor 402 detects that the wear expansion of the annular atomized air gap between the spray gun 5 and the air cap 6 exceeds the normal threshold, the controller stops the delivery of external industrial dry-filtered compressed air. Simultaneously, the dual-axis motor 81 drives the threaded rod 82 to rotate, and the threaded block 83 connects to the threaded rod 82, causing the screw... Under the limit of the guide rod 84, the threaded block 83 drives the conical block 85 to move rapidly in the opposite direction, quickly sealing the conical channel 53. After the threaded block 83 moves a certain distance, it will push the arc plate 601 to move synchronously, so that the two pull rods 602 drive the pressure ring 603 to move synchronously, pressing down several elastic plates 92, so that the elastic plates 92 enter the groove 91 from the slot 62. At this time, the rubber ring 102 resets, so that the air cap 6 and the spray gun 5 are unlocked and automatically separated, which can automatically cut off the air and complete the synchronous disassembly of the air cap 6, avoiding the continued operation of the air gap with excessive wear. Compared with the existing technology that relies on manual shutdown and disassembly for inspection, and requires manual disassembly and replacement of the air cap 6, it can realize the automatic detection of the annular atomizing air gap and automatic disassembly of the fault, reduce manual operation and maintenance, and improve the continuous spraying mass production capacity of the equipment. Then, the alarm will sound to remind the user to perform maintenance.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spraying device based on surround spraying, comprising a support base (1), a robotic arm (2) fixedly connected to the top of the support base (1), a spray gun (5) fixedly connected to one side of the robotic arm (2), and a wind cap (6) provided at one end of the spray gun (5), characterized in that: The support base (1) is provided with a rotating component (3) on one side. Both ends of the rotating component (3) are provided with a rotating bearing component (4) for bearing and driving the notebook shell to rotate and spray. The spray gun (5) is equipped with a gas velocity sensor (7) for real-time detection of the airflow velocity in the airflow channel. The spray gun (5) is equipped with a dynamic airflow adjustment component (8) for dynamically fine-tuning the airflow velocity.

2. The spraying equipment based on surround spraying according to claim 1, characterized in that: The rotating assembly (3) includes a first motor (31) installed in the support base (1), a first gear (32) fixedly connected to the output end of the first motor (31), the output end of the first motor (31) being rotatably connected to the support base (1), a rotating frame (34) being rotatably connected to the top of the support base (1), a first gear ring (33) being fixedly connected inside the rotating frame (34), and the first gear (32) meshing with the first gear ring (33); The rotating bearing assembly (4) includes a second motor (41) installed in the rotating frame (34). The output end of the second motor (41) is fixedly connected to a rotating seat (42). The rotating seat (42) is rotatably connected to the rotating frame (34). A bearing net (43) is fixedly connected to the top of the rotating seat (42). A limit frame (44) is fixedly connected to the top of the bearing net (43).

3. The spraying equipment based on surround spraying according to claim 1, characterized in that: The spray gun (5) has an air inlet connector (51) connected to one side, an L-shaped air inlet channel (52) opened inside the spray gun (5), a conical channel (53) is provided on one side of the L-shaped air inlet channel (52), the air inlet connector (51) is connected to the L-shaped air inlet channel (52), an air chamber (54) is opened inside the spray gun (5), the L-shaped air inlet channel (52) is connected to the air chamber (54), a gas flow rate sensor (7) is installed inside the air chamber (54), several exhaust channels (55) are opened through the spray gun (5), all of the several exhaust channels (55) are connected to the air chamber (54), a connecting channel (56) is opened through the spray gun (5), the connecting channel (56) is connected to the air chamber (54), an L-shaped liquid inlet channel (57) is opened through the spray gun (5), and a liquid outlet pipe (58) is connected to one end of the L-shaped liquid inlet channel (57); The vent (6) has an exhaust hole (61) through one end, and the exhaust hole (61) is coaxially arranged with the liquid outlet pipe (58). A groove (62) is provided on the inner wall of one end of the vent (6).

4. The spraying equipment based on surround spraying according to claim 3, characterized in that: The dynamic airflow adjustment component (8) includes a dual-axis motor (81) installed in the spray gun (5). One of the output ends of the dual-axis motor (81) is fixedly connected to a threaded rod (82). The threaded rod (82) is rotatably connected to the spray gun (5). A threaded block (83) is threadedly connected to the outer wall of the threaded rod (82). A guide rod (84) is fixedly connected inside the spray gun (5). The threaded block (83) is slidably connected to the guide rod (84). A conical block (85) is fixedly connected to one end of the threaded block (83). The shape of the conical block (85) matches that of the conical channel (53).

5. The spraying equipment based on surround spraying according to claim 1, characterized in that: The spray gun (5) is provided with a snap-fit ​​assembly (9) for elastic quick-release locking of the wind cap (6) on one side. The snap-fit ​​assembly (9) includes several grooves (91) opened on the outer ring of one end of the spray gun (5). Each of the several grooves (91) is fixedly connected with an elastic piece (92). The hood (6) is provided with a sealing assembly (10), which includes an installation ring (101) fixedly connected to the inner wall of the hood (6), and a rubber ring (102) fixedly connected to one side of the installation ring (101).

6. The spraying equipment based on surround spraying according to claim 4, characterized in that: The dynamic airflow adjustment component (8) is provided with a circumferential rotation component (20) on one side. The circumferential rotation component (20) includes a rotating shaft (201) fixedly connected to the other end of the dual-axis motor (81). A second gear (202) is fixedly connected to one end of the rotating shaft (201). A rotating frame (203) is rotatably connected to one end of the spray gun (5). A second gear ring (204) is fixedly connected to the inner wall of the rotating frame (203). The second gear (202) meshes with the second gear ring (204).

7. The spraying equipment based on surround spraying according to claim 6, characterized in that: The circumferential rotating component (20) is connected to a cleaning component (30) for removing paint residue from the spray gun (5) and the wind cap (6) on one side. The cleaning component (30) includes several air outlet pipes (301) that are evenly connected to one side of the rotating frame (203). One end of each air outlet pipe (301) is connected to a first nozzle (302).

8. The spraying equipment based on surround spraying according to claim 6, characterized in that: The circumferential rotating component (20) is provided with a detection component (40) for circumferential multi-point detection of the wear degree of the annular atomizing air gap. The detection component (40) includes a mounting rod (401) installed on one side of the rotating frame (203), and a vision sensor (402) is fixedly connected to one end of the mounting rod (401).

9. The spraying equipment based on surround spraying according to claim 8, characterized in that: The circumferential rotating component (20) is connected to a real-time protection component (50) for preventing paint mist adhesion detection component (40) on one side. The real-time protection component (50) includes an L-shaped branch pipe (501) connected to one side of the rotating frame (203). One end of the vision sensor (402) is fixedly connected to the air storage frame (502). The L-shaped branch pipe (501) is connected to the air storage frame (502). Several second nozzles (503) are evenly connected to one side of the air storage frame (502).

10. The spraying equipment based on surround spraying according to claim 5, characterized in that: The spray gun (5) is provided with an unlocking component (60). The unlocking component (60) includes an arc plate (601) slidably connected to the spray gun (5). Two pull rods (602) are fixedly connected to one side of the arc plate (601). A pressure ring (603) is fixedly connected to one end of the two pull rods (602). The inner wall of the pressure ring (603) is respectively attached to a number of elastic sheets (92).

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