Multi-angle spraying tool for skin

Abstract

The utility model relates to a skin multi-angle spraying tool which comprises a movable installation table capable of providing an installation plane, and a protective shell capable of defining a spraying cavity separated from the external space is detachably installed on the movable installation table. A conveying assembly which transversely penetrates through the protective shell and continuously drives the skin elements to sequentially and directionally penetrate through the spraying cavity is further supported on the movable mounting table, and a plurality of limiting assemblies capable of clamping and positioning the skin elements are distributed on a conveying surface limited by the conveying assembly at intervals; a cleaning assembly, a multi-angle spraying assembly and a drying assembly which are located above the skin element clamped by the limiting assembly are arranged on the inner top face of the protective shell at intervals. The multi-angle spraying assembly changes the relative spraying position and the relative spraying angle between the nozzle and the point position to be sprayed according to the mode that the multi-angle spraying assembly can deflect and ascend and descend according to the surface profile of the skin element to coat the skin element with a uniform coating.

Description

Technical Field

[0001] This utility model relates to the technical field of skin spraying equipment, and in particular to a multi-angle spraying fixture for skin. Background Technology

[0002] As the skin structure of an aircraft, the aircraft skin protects the internal structure of the aircraft. It is also the main load-bearing component that determines the fatigue life of the aircraft. In order to ensure its strength and performance, the aircraft skin usually needs to be coated to improve its performance parameters.

[0003] However, existing aerospace component coating equipment can only coat the surface of the component directly opposite the nozzle during the coating process. This requires constant manual adjustment of the component's position to achieve full coating coverage, increasing operator workload and slowing down the coating process, resulting in low efficiency. Aircraft skin, in particular, typically has non-flat surfaces. During coating, the relative height and angle of the nozzle must be adjusted according to the actual spraying points to ensure uniformity and smoothness of the coating film. However, manual coating operations cannot precisely control the spraying position, easily leading to inaccuracies in spraying height and angle, and uneven coating thickness. Furthermore, existing coating equipment typically only adjusts the spraying height, not the spraying angle, preventing the nozzle from being perpendicular to the spraying point and hindering the generation of a uniformly distributed coating with high surface smoothness when coating curved skin surfaces. Utility Model Content

[0004] The purpose of this invention is to provide a multi-angle spraying fixture for skin workpieces with curved contours, which can adjust the working point and tilt angle of the nozzle in three-dimensional space to apply a coating with uniform coating distribution and high flatness. This solves the problem that existing spraying equipment cannot guarantee the uniformity and flatness of the coating when spraying aerospace parts with curved surface contours.

[0005] The technical solution adopted by this utility model is as follows: a multi-angle spraying fixture for skin, including a movable mounting platform that can provide a mounting plane, a protective shell that can define a spraying chamber that is separated from the external space is detachably installed on the movable mounting platform, a transmission component that transversely penetrates the protective shell and continuously drives several skin elements to sequentially and orient themselves through the spraying chamber on the movable mounting platform, and several limiting components that can clamp and position the skin elements are arranged at intervals on the transmission surface defined by the transmission component; a cleaning component, a multi-angle spraying component and a drying component are arranged at intervals on the inner top surface of the protective shell above the skin elements clamped by the limiting components, wherein the multi-angle spraying component changes the relative spraying position and relative spraying angle between the nozzle and the point to be sprayed in a way that it can deflect and rise and fall according to the surface contour of the skin element to apply a uniform coating on the skin element.

[0006] According to a preferred embodiment, the multi-angle spraying assembly includes a nozzle, an angle adjustment mechanism, a lifting column, and a lateral deflection mechanism, wherein the lifting column is detachably mounted on the inner top surface of the protective shell, and the lateral deflection mechanism is mounted on the axial lower end of the lifting column; the motion output end of the lateral deflection mechanism away from the lifting column is connected to the angle adjustment mechanism, which is capable of adjusting the tilt angle of the nozzle, and the nozzle is detachably mounted on the moving end of the angle adjustment mechanism.

[0007] According to a preferred embodiment, the deflection motor of the lateral deflection mechanism is installed at the lower axial end of the lifting column, and the lateral guide groove, which can follow the deflection, is also connected to the rotating shaft of the deflection motor; a guide transmission screw is rotatably provided in the lateral guide groove, and one end of the guide transmission screw passes through the end wall of the lateral guide groove and is connected to the lateral drive motor installed on the outer side wall of the lateral guide groove; a T-shaped sliding bar, which can follow the rotation of the guide transmission screw in the groove cavity of the lateral guide groove and translate along the slotting direction of the lateral guide groove, is also threaded onto the rod body of the guide transmission screw.

[0008] According to a preferred embodiment, the arc-shaped seat of the angle adjustment mechanism is mounted on the T-shaped sliding bar, and the arc surface and side surface of the arc-shaped seat are respectively provided with mutually parallel arc-shaped rail grooves and arc-shaped toothed rails. An arc-shaped slider is provided in the arc-shaped rail groove, and a gear is meshed in the arc-shaped toothed rail. One end of the arc-shaped slider extending outside the arc-shaped rail groove is connected to a mounting base. The gear is driven by a rotary motor located outside the arc-shaped seat, and the rotary motor is connected to the mounting base through a connecting positioning rod.

[0009] According to a preferred embodiment, a pressurized feed tank capable of storing paint is also installed on the transverse guide groove of the transverse deflection mechanism, and the pressurized discharge port of the pressurized feed tank is connected to the nozzle through an elastic feed pipe.

[0010] According to a preferred embodiment, the transmission assembly includes rotating wheels supported on both sides of the protective shell, a transmission drive motor capable of driving the rotating wheels to rotate, and a transmission belt sleeved on the two rotating wheels.

[0011] According to a preferred embodiment, the limiting assembly includes a limiting housing, a suction cylinder, a hydraulic rod, and a negative pressure suction nozzle. The limiting housing is spaced apart on the conveyor belt, and the suction cylinder and the hydraulic rod that drives the piston of the suction cylinder to reciprocate are disposed inside the limiting housing. A negative pressure suction nozzle capable of negative pressure suction and positioning of the skinned workpiece is embedded on the top surface of the limiting housing, and the negative pressure suction nozzle is connected to the cavity of the suction cylinder.

[0012] According to a preferred embodiment, the hollow plate of the cleaning component is suspended above the conveyor belt by a connecting rod, and a plurality of suction cleaning heads communicating with the plate cavity are arranged in a staggered array on the lower surface of the hollow plate; the hollow plate is also connected to an external vacuuming unit through an exhaust pipe.

[0013] According to a preferred embodiment, the drying assembly's mounting plate is suspended on the inner top surface of the protective shell, and gradient drying light strips are arranged on the lower surface of the mounting plate.

[0014] According to a preferred embodiment, a horizontal partition and a telescopic vertical partition that cooperate with each other to divide the shell cavity are provided inside the protective shell, and a recycling tank for collecting residual paint is provided at the bottom of the horizontal partition.

[0015] The beneficial effects of this utility model are:

[0016] The protective shell provided in this application isolates the operating space for processes such as spraying from the external environment, preventing the diffusion of atomized coating and environmental pollution. It also effectively protects the pre-cleaned skin workpieces before spraying, preventing secondary adhesion of external dust and other impurities to the surface of the skin workpieces and reducing their surface cleanliness, thus improving the film quality of subsequent spraying processes. The transmission component provided in this application continuously transports the skin workpieces as needed, allowing the skin workpieces, held by the spaced-out limiting components, to move in a step-by-step manner under the drive of the transmission component. This intermittent movement allows several skin workpieces to sequentially complete the effective coating film formation process. The limiting components provided in this application use periodically adjustable negative pressure adsorption to adsorb and position the skin workpieces, ensuring accurate and non-damaging positioning and effectively protecting the surface contour and overall shape of the skin workpieces. The cleaning component described in this application can use negative pressure suction to remove impurities and other particles adhering to the surface of the workpiece to be coated, thereby improving surface cleanliness. It can also collect and separate the transferred impurities for centralized treatment by subsequent equipment. The multi-angle spraying component described in this application can ensure uniform and smooth spraying of the curved surface of the workpiece by adjusting its height and angle. It ensures that any point on the curved surface receives equal spraying from nozzles perpendicular to the tangent at that point and spaced at consistent heights, thus improving the spraying effect and quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a preferred multi-angle spraying fixture for skin proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a preferred multi-angle spraying fixture for skin, as proposed in this utility model, when the spraying space is divided.

[0019] Figure 3 This is a schematic diagram of the structure of a preferred multi-angle spraying component of a multi-angle spraying fixture for skin proposed in this utility model;

[0020] Figure 4 This is a lateral plan view of the horizontal partition and the lifting plate when they come into contact with a preferred multi-angle spraying fixture for skin proposed in this utility model.

[0021] List of reference numerals

[0022] 1: Mobile mounting platform; 2: Protective shell; 3: Transmission assembly; 4: Limiting assembly; 5: Cleaning assembly; 6: Multi-angle spraying assembly; 7: Drying assembly; 21: Horizontal partition; 22: Telescopic vertical partition; 23: Recycling tank; 221: Positioning double-layer plate; 222: Lifting plate; 223: Telescopic rod; 31: Rotating wheel; 32: Transmission drive motor; 33: Conveyor belt; 41: Limiting seat shell; 42: Suction cylinder; 43: Hydraulic rod; 44: Negative pressure suction nozzle; 51: Hollow plate; 52: Connecting rod; 53: Suction cleaning head; 54: Exhaust pipe; 55: External attachment Dust collection unit; 61: Nozzle; 62: Angle adjustment mechanism; 63: Lifting column; 64: Lateral deflection mechanism; 65: Pressurized feeding tank; 66: Flexible conveying pipe; 621: Arc-shaped seat; 622: Arc-shaped rail groove; 623: Arc-shaped toothed rail; 624: Arc-shaped slider; 625: Rotary motor; 626: Gear; 627: Connecting positioning rod; 628: Mounting base; 641: Deflection motor; 642: Lateral guide groove; 643: Guide transmission screw; 644: T-shaped sliding strip; 645: Lateral drive motor; 71: Layout plate; 72: Gradient drying light strip. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are intended to aid in understanding this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail.

[0025] Furthermore, the technical features described herein, or the steps in all the methods or processes disclosed herein, may be combined in any suitable manner in one or more embodiments, except for mutually exclusive features and / or steps. It will be readily understood by those skilled in the art that the order of steps or operations of the methods relating to the embodiments provided herein may also be altered. Any order in the drawings and embodiments is for illustrative purposes only and does not imply a requirement to follow a particular order unless explicitly stated otherwise.

[0026] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, under reasonable circumstances (without self-contradiction), include both direct and indirect connections (linkages).

[0027] The following is a detailed explanation with reference to the accompanying drawings.

[0028] Example 1

[0029] This application provides a multi-angle spraying fixture for skin, which includes a movable mounting platform 1, a protective shell 2, a transmission component 3, a limiting component 4, a cleaning component 5, a multi-angle spraying component 6, and a drying component 7.

[0030] according to Figure 1-4In one specific embodiment, a movable mounting platform 1 is movably arranged within the workshop to provide a mounting surface. A protective shell 2, capable of defining a spraying chamber separated from the external space, is detachably mounted on the movable mounting platform 1. A transfer assembly 3, which transversely penetrates the protective shell 2 and continuously drives several skin elements sequentially through the spraying chamber, is also supported on the movable mounting platform 1. Several limiting components 4, capable of clamping and positioning the skin elements, are spaced apart on the transfer surface defined by the transfer assembly 3. A cleaning assembly 5, a multi-angle spraying assembly 6, and a drying assembly 7 are spaced apart on the inner top surface of the protective shell 2, positioned above the skin elements clamped by the limiting components 4. The multi-angle spraying assembly 6 changes the relative spraying position and relative spraying angle between the nozzle 61 and the point to be sprayed, in a manner that allows it to deflect and rise according to the surface contour of the skin element to apply a uniform coating. The protective shell 2 provided in this application can separate the operating space of spraying and other processes from the external environment, preventing the diffusion of atomized coating and environmental pollution. It also effectively protects the pre-cleaned skin workpiece before spraying, preventing external dust and other impurities from re-adhering to the surface of the skin workpiece and reducing its surface cleanliness, thus improving the film quality of subsequent spraying processes. The transmission component 3 provided in this application can continuously transport the skin workpiece as needed, allowing the skin workpiece held by the spaced-apart limiting components 4 to move in a step-by-step manner under the drive of the transmission component 3. During intermittent translation, several skin workpieces can sequentially complete the effective coating film formation process. The limiting components 4 provided in this application can adsorb and position the skin workpiece through periodically adjustable negative pressure adsorption, ensuring accurate and non-damaging positioning of the skin workpiece and effectively protecting its surface contour and overall shape. The cleaning component 5 provided in this application can use negative pressure suction to remove impurities and other particles adhering to the surface of the workpiece to be coated, thereby improving surface cleanliness. It can also collect and separate the transferred impurities for centralized treatment by subsequent equipment. The multi-angle spraying component 6 provided in this application can ensure uniform and smooth spraying of the curved surface of the workpiece by adjusting its height and angle. It ensures that any point on the curved surface is treated with equal amounts of coating by nozzles 61 that are perpendicular to the tangent at that point and spaced at consistent heights, thereby improving the spraying effect and quality. The drying component 7 provided in this application can gradually raise the position of the workpiece by continuously changing the temperature, causing the coating on the surface of the workpiece to gradually solidify and harden.

[0031] Preferably, a horizontal partition 21 and a telescopic vertical partition 22 that cooperate to divide the shell cavity are provided inside the protective shell 2. More preferably, a recovery tank 23 for collecting residual paint is provided at the bottom of the horizontal partition 21. Preferably, the telescopic vertical partition 22 includes a positioning double-layer plate 221 and a lifting plate 222 that is slidably engaged between the two plates of the positioning double-layer plate 221. More preferably, the lifting plate 222 can change its working position by being raised and lowered by a telescopic rod 223 located between the positioning double-layer plates 221. Specifically, a notch groove for accommodating the conveyor belt 33 is provided at the bottom of the lifting plate 222. Preferably, the horizontal partition 21 can support the upper conveyor belt 33, and the horizontal partition 21 can cooperate with the elastic vertical partition 22 to block the diffusion of paint molecules in the shell cavity. The horizontal partition 21 provided in this application can cooperate with the periodically lifting and expanding telescopic vertical partition 22 to independently separate the spraying area, so as to avoid the escape of atomized paint, and can also effectively collect residual paint, which can be easily recycled using the recycling tank 23, thereby reducing paint waste and pollution range.

[0032] Preferably, the transmission assembly 3 includes rotating wheels 31 supported on both sides of the protective shell 2, a transmission drive motor 32 capable of driving the rotating wheels 31 to rotate, and a transmission belt 33 sleeved on the two rotating wheels 31. Preferably, the transmission belt 33 has a raised surface around the limiting seat shell 41, which facilitates the diversion of the coating adhering to its surface and its fall to the horizontal partition 21, where it is collected and stored by the recycling trough 23 provided on the horizontal partition 21. Preferably, the transmission drive motor 32 is an intermittent stepper motor whose working cycle and unit working time can be adjusted to improve its work adaptability.

[0033] Preferably, the limiting assembly 4 includes a limiting housing 41, a suction cylinder 42, a hydraulic rod 43, and a negative pressure suction nozzle 44. Preferably, the limiting housing 41 is spaced apart and mounted on the conveyor belt 33. Preferably, the suction cylinder 42 and the hydraulic rod 43 that drives the piston of the suction cylinder 42 to reciprocate are disposed inside the limiting housing 41. Preferably, a negative pressure suction nozzle 44 capable of negative pressure suction and positioning of the skinned workpiece is embedded on the top surface of the limiting housing 41, and the negative pressure suction nozzle 44 is connected to the cavity of the suction cylinder 42. The hydraulic rod 43 provided in this application can be preset with a working cycle according to requirements, so that it can complete the extension and retraction movements at specific time points. When the hydraulic rod 43 shortens, the suction cylinder 42 can increase the inner cavity to generate a negative pressure adsorption effect, so that the skin workpiece can be effectively positioned on the negative pressure adsorption nozzle 44. After the skin workpiece has completed the spraying process, the hydraulic rod 43 releases the negative pressure state of the suction cylinder 42 by extending, thereby releasing the adsorption effect of the negative pressure adsorption nozzle 44, and thus facilitating the detachment of the skin workpiece.

[0034] Preferably, the hollow plate 51 of the cleaning assembly 5 is suspended above the conveyor belt 33 via a connecting rod 52. Preferably, a plurality of suction cleaning heads 53 communicating with the plate cavity are arranged in a staggered array on the lower surface of the hollow plate 51. Preferably, the hollow plate 51 is also connected to the external vacuuming unit 55 via an exhaust pipe 54. The staggered array of suction cleaning heads 53 provided in this application enables the negative pressure traction airflow to cover the entire surface of the skinned workpiece, so as to perform a thorough and comprehensive cleaning process on the surface of the skinned workpiece, thereby improving cleaning efficiency and quality.

[0035] Preferably, the multi-angle spraying assembly 6 includes a nozzle 61, an angle adjustment mechanism 62, a lifting column 63, a lateral deflection mechanism 64, a pressurized feed tank 65, and a flexible feed pipe 66. Preferably, the lifting column 63 is detachably mounted on the inner top surface of the protective shell 2. Preferably, the lateral deflection mechanism 64 is mounted on the axial lower end of the lifting column 63. More preferably, the motion output end of the lateral deflection mechanism 64 away from the lifting column 63 is connected to an angle adjustment mechanism 62 capable of adjusting the tilt angle of the nozzle 61. Specifically, the nozzle 61 is detachably mounted on the moving end of the angle adjustment mechanism 62. Preferably, a pressurized feed tank 65 capable of storing paint is also disposed on the lateral guide groove 642 of the lateral deflection mechanism 64. Preferably, the pressurized drain port of the pressurized feed tank 65 is connected to the nozzle 61 through the flexible feed pipe 66. Specifically, the flexible conveying pipe 66 can extend and retract as needed to change its length, thereby conveying paint between the nozzles 61 with varying spacing and the pressurized supply tank 65. Preferably, a pressurized liquid pump for directional paint flow is provided at the pressurized drain port of the pressurized supply tank 65. Preferably, a balance block is provided on the other side of the transverse guide 642 to ensure the force balance during its deflection movement. The angle adjustment mechanism 62, the lifting column 63, and the transverse deflection mechanism 64 provided in this application can cooperate to adjust the actual working position of the nozzle 61, so that the nozzle 61 can spray paint at any point within a certain spatial range with an adjustable tilt angle, improving the accuracy and uniformity of spraying, thereby facilitating the acquisition of a paint film with uniform thickness and high flatness on curved surfaces.

[0036] Preferably, the angle adjustment mechanism 62 includes an arc-shaped base 621, an arc-shaped rail groove 622, an arc-shaped toothed rail 623, an arc-shaped slider 624, a rotary motor 625, a gear 626, a connecting positioning rod 627, and a mounting base 628. Preferably, the arc-shaped base 621 of the angle adjustment mechanism 62 is mounted on the surface of the T-shaped sliding bar 644 extending to the outside of the transverse guide groove 642. More preferably, the arc-shaped base 621 has parallel arc-shaped rail grooves 622 and arc-shaped toothed rails 623 respectively formed on its arc surface and side surface. Specifically, an arc-shaped slider 624 is provided in the arc-shaped rail groove 622, and a gear 626 is meshed in the arc-shaped toothed rail 623. Preferably, the end of the arc-shaped slider 624 extending outside the arc-shaped rail groove 622 is connected to the mounting base 628. Preferably, the gear 626 is drive-connected to the rotary motor 625 located outside the arc-shaped base 621. Specifically, the rotary motor 625 is connected to the mounting base 628 via a connecting positioning rod 627, thereby positioning the rotary motor 625 in a suspended position outside the arc-shaped base 621. Preferably, a pull sliding rod is also provided on the side of the mounting base 628 away from the connecting positioning rod 627 to ensure the stability of the forces on both sides of the mounting base 628 and to prevent the stability of the mounting base 628 from decreasing due to the weight of the rotary motor 625. The angle adjustment mechanism 62 provided in this application can drive the nozzle 61 to deflect vertically within a 90° deflection angle range as needed, and further expands the deflection range through a horizontal deflection mechanism 64, thereby achieving position adjustment within a 180° deflection angle range.

[0037] Preferably, the lateral deflection mechanism 64 includes a deflection motor 641, a lateral guide groove 642, a guide transmission screw 643, a T-shaped sliding bar 644, and a lateral drive motor 645. Preferably, the deflection motor 641 of the lateral deflection mechanism 64 is mounted on the lower axial end of the lifting column 63. More preferably, a lateral guide groove 642 capable of deflecting along with the deflection motor 641 is also connected to the rotating shaft of the deflection motor 641. Preferably, a guide transmission screw 643 is rotatably disposed within the lateral guide groove 642. More preferably, one end of the guide transmission screw 643 passes through the end wall of the lateral guide groove 642 and is connected to the lateral drive motor 645 mounted on the outer side wall of the lateral guide groove 642. Preferably, a T-shaped sliding strip 644 is threadedly sleeved on the rod body of the guide drive screw 643 located in the groove cavity of the transverse guide groove 642. This T-shaped sliding strip 644 is capable of translating along the slotting direction of the transverse guide groove 642 following the rotation of the guide screw 643 around its axis. The deflection motor 641 and the transverse drive motor 645 provided in this application can cooperate to complete the planar deflection and transverse movement of the nozzle, so that the nozzle 61 with a changed tilt angle can be positioned at any point in a certain space, thereby effectively defining the relative positional relationship between the nozzle 61 and the point to be sprayed.

[0038] Preferably, the mounting plate 71 of the drying assembly 7 is suspended on the inner top surface of the protective shell 2. A gradient drying light strip 72 is arranged on the lower surface of the mounting plate 71. The gradient drying light strip 72 provided in this application refers to a variable temperature heating light strip, which can gradually heat the film layer in a continuous heating manner to ensure the stability of the film layer curing.

[0039] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A multi-angle spraying tool for skin, comprising a movable mounting table (1) capable of providing a mounting plane, characterized in that, a protective shell (2) capable of defining a spraying chamber separated from the outside space is detachably mounted on the movable mounting table (1), a transmission assembly (3) continuously driving a plurality of skin elements to be sequentially oriented through the spraying chamber is supported on the movable mounting table (1) and transversely penetrates through the protective shell (2), and a plurality of limiting assemblies (4) capable of clamping and positioning the skin elements are arranged on the transmission surface of the transmission assembly (3); a cleaning assembly (5), a multi-angle spraying assembly (6) and a drying assembly (7) above the skin elements clamped by the limiting assemblies (4) are arranged on the inner top surface of the protective shell (2), wherein, the multi-angle spraying assembly (6) is capable of changing the relative spraying position and the relative spraying angle between the nozzle (61) and the to-be-sprayed point according to the deflection and lifting of the skin element surface profile.

2. The skin multi-angle spray fixture of claim 1, wherein, the multi-angle spraying assembly (6) comprises a nozzle (61), an angle adjusting mechanism (62), a lifting column (63) and a transverse deflection mechanism (64), wherein, the lifting column (63) is detachably mounted on the inner top surface of the protective shell (2), and the transverse deflection mechanism (64) is mounted on the axial lower end of the lifting column (63); the transverse deflection mechanism (64) is connected with the angle adjusting mechanism (62) capable of adjusting the inclination angle of the nozzle (61) away from the movement output end of the lifting column (63), and the nozzle (61) is detachably mounted on the movement end of the angle adjusting mechanism (62).

3. The skin multi-angle spray fixture of claim 2, wherein, the deflection motor (641) of the transverse deflection mechanism (64) is mounted on the axial lower end of the lifting column (63), and the transverse guide groove (642) capable of deflection is further connected on the rotation shaft of the deflection motor (641); the guide transmission screw (643) is rotatably penetrated in the transverse guide groove (642), and one end of the guide transmission screw (643) penetrates through the end wall of the transverse guide groove (642) and is in transmission connection with the transverse driving motor (645) mounted on the outer side wall of the transverse guide groove (642); the T-shaped sliding bar (644) capable of following the axial rotation to translate along the slotting direction of the transverse guide groove (642) is further threadedly sleeved on the rod body of the guide transmission screw (643) in the slot cavity of the transverse guide groove (642).

4. The skin multi-angle spray fixture of claim 3, wherein, the cam seat body (621) of the angle adjusting mechanism (62) is mounted on the T-shaped sliding bar (644), and the cam surface and the side surface of the cam seat body (621) are respectively provided with mutually parallel cam track grooves (622) and cam diameter tooth tracks (623), wherein, the cam sliding block (624) is arranged in the cam track groove (622), and the gear (626) is meshingly mounted in the cam diameter tooth track (623). The arc surface slider (624) is connected with a mounting base (628) at one end extending outside the arc line rail groove (622), the gear (626) is in transmission connection with a rotary motor (625) outside the arc surface base body (621), and the rotary motor (625) is connected with the mounting base (628) through a connecting positioning rod (627).

5. The skin multi-angle spray fixture of claim 4, wherein, A pressurized supply tank (65) capable of storing paint is also arranged on the transverse movement guide groove (642) of the transverse movement deflection mechanism (64), and a pressurized liquid outlet of the pressurized supply tank (65) is connected with the nozzle (61) through an elastic supply pipe (66).

6. The skin multi-angle spray fixture of claim 5, wherein, The transmission assembly (3) comprises rotating wheels (31) supported on both sides of the protective shell (2), a transmission drive motor (32) capable of driving the rotating wheels (31) to rotate, and a transmission belt (33) sleeved on the two rotating wheels (31).

7. The skin multi-angle spray fixture of claim 6, wherein, The limiting assembly (4) comprises a limiting seat shell (41), a suction cylinder (42), a hydraulic rod (43), and a negative pressure suction nozzle (44), wherein, The limiting seat shell (41) is spaced apart and mounted on the transmission belt (33), and the suction cylinder (42) and the hydraulic rod (43) driving the piston column of the suction cylinder (42) to reciprocate and translate are arranged in the limiting seat shell (41); A negative pressure suction nozzle (44) capable of negatively suction positioning the skin workpiece is embedded on the top surface of the limiting seat shell (41), and the negative pressure suction nozzle (44) is in communication with the cylinder cavity of the suction cylinder (42).

8. The skin multi-angle spray fixture of claim 7, wherein, The hollow plate (51) of the cleaning assembly (5) is suspended above the transmission belt (33) through a connecting rod (52), and a plurality of suction cleaning heads (53) in communication with the plate cavity thereof are arranged in a staggered array on the lower surface of the hollow plate (51). The hollow plate (51) is also in communication with an externally hung dust collection unit (55) through an exhaust pipe (54).

9. The skin multi-angle spray fixture of claim 8, wherein, The layout plate (71) of the drying assembly (7) is suspended on the inner top surface of the protective shell (2), and a gradient drying lamp strip (72) is arranged on the lower surface of the layout plate (71).

10. The skin multi-angle spray fixture of claim 9, wherein, The transverse partition plate (21) and the telescopic vertical partition plate (22) are arranged in the protective shell (2) to cooperatively divide the shell cavity, and the bottom of the transverse partition plate (21) is provided with a recovery groove (23) capable of collecting residual paint.

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