Spraying device

Abstract

The invention provides a spraying device, which is used for spraying the surface of a workpiece, and comprises a support frame, the linear reciprocating mechanism is arranged on the supporting frame, and the linear reciprocating mechanism reciprocates in the horizontal direction; the spray gun frame is arranged on the linear reciprocating mechanism and reciprocates in the horizontal direction along with the linear reciprocating mechanism, the spray gun frame comprises a fixed rod and a telescopic rod, and the telescopic rod is telescopically connected with the fixed rod; and the spray gun is connected with the telescopic rod. The spraying device is used for surface spraying of large workpieces, the partition range in the horizontal direction can be adjusted, the spraying requirements of workpieces with different lengths are met, and the spraying device can also be vertically adjusted in the height direction, and the spraying requirements of workpieces with different diameters are met. According to the spraying device, the spraying effect and the spraying quality can be improved, the cost can be reduced, mounting and debugging are convenient, the flexibility is higher, and manual maintenance and overhaul are convenient.

Description

Technical Field

[0001] The present invention relates to the field of workpiece spraying, and particularly to a spraying device. Background Art

[0002] Currently, there are two ways to spray foam on the surface of workpieces: manual spraying and spraying using a spraying robot. Manual spraying has problems such as low efficiency, unstable quality, serious paint waste, great harm to the human body, and high labor costs. With the development of industrial automation, spraying robots are increasingly widely used in modern manufacturing, mainly for processes such as coating spraying and surface treatment. It can accurately and efficiently complete the spraying task according to the preset program and parameters, improving production efficiency and painting quality. However, there are also some problems, such as high initial investment costs, complex programming and debugging, limited adaptability to complex workpieces, and great difficulty in maintenance and repair. Summary of the Invention

[0003] The main object of the present invention is to provide a spraying device for the surface spraying of large workpieces, especially suitable for the surface spraying of cylindrical-section workpieces, so as to overcome the defects of low spraying efficiency, unstable quality, and high investment costs in the prior art.

[0004] To achieve the above object, the present invention provides a spraying device for the surface spraying of workpieces, including:

[0005] A support frame;

[0006] A linear reciprocating mechanism, arranged on the support frame, and the linear reciprocating mechanism reciprocates horizontally;

[0007] A spray gun holder, arranged on the linear reciprocating mechanism, and reciprocates horizontally along with the linear reciprocating mechanism. The spray gun holder includes a fixed rod and a telescopic rod, and the telescopic rod is telescopically connected to the fixed rod; and

[0008] A spray gun, connected to the telescopic rod.

[0009] In one embodiment of the spraying device of the present invention, it further includes:

[0010] Support rollers, arranged below the linear reciprocating mechanism, on which the workpiece is placed and rotates driven by the support rollers; and / or, the workpiece is a large cylindrical-section workpiece; and / or, the telescopic rod is telescopically connected to the fixed rod in the vertical direction.

[0011] In one embodiment of the spraying device of the present invention, the support frame includes a support crossbeam and at least two support columns, and the support crossbeam and the at least two support columns form a door frame structure; the linear reciprocating mechanism is arranged on the support crossbeam.

[0012] In one embodiment of the spraying device of the present invention, the linear reciprocating mechanism includes:

[0013] A base, disposed on the support frame;

[0014] A linear guide rail, disposed on the base;

[0015] A horizontal moving mechanism, disposed on the linear guide rail; and

[0016] A driving mechanism, driving the horizontal moving mechanism to reciprocate along the linear guide rail.

[0017] In one embodiment of the spraying device of the present invention, the spray gun holder further includes a cross beam, and the fixing rod is slidably connected to the cross beam along the extending direction of the cross beam.

[0018] In one embodiment of the spraying device of the present invention, the spray gun holder includes at least two fixing rods and at least two telescopic rods, each telescopic rod is telescopically connected to a fixing rod; one fixing rod is fixedly connected to one end of the cross beam, and the other fixing rods are slidably connected to the cross beam along the extending direction of the cross beam.

[0019] In one embodiment of the spraying device of the present invention, it further includes:

[0020] A connecting frame, including a connecting column and a connecting rod, the connecting column and the connecting rod are connected in a T shape, the connecting column is connected to the linear reciprocating mechanism, and the connecting rod is connected to the cross beam.

[0021] In one embodiment of the spraying device of the present invention, the spray gun includes a spray head and a spray head base, the spray head is disposed on the spray head base, and the spray head base is pivotally connected to the telescopic rod.

[0022] In one embodiment of the spraying device of the present invention, the spray head base is provided with a through hole, the telescopic rod is provided with a connecting hole, and the through hole and the connecting hole are fixedly connected by a rotating shaft.

[0023] In one embodiment of the spraying device of the present invention, the linear reciprocating mechanism includes at least two horizontal moving mechanisms, and the at least two horizontal moving mechanisms move in the same direction and at the same speed.

[0024] Advantages of the present invention:

[0025] The spraying device of the present invention is used for surface spraying of large workpieces. It can achieve adjustable partition range in the horizontal direction to meet the spraying requirements of workpieces with different lengths, and can also achieve up-and-down adjustment in the height direction to meet the spraying requirements of workpieces with different diameters. The spraying device of the present invention can improve the spraying effect and quality, reduce costs, facilitate installation and debugging, have higher flexibility, and be convenient for manual maintenance and overhaul. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the spraying device in an embodiment of the present invention.

[0027] Figure 2 It is the perspective view of the spraying device in an embodiment of the present invention.

[0028] Figure 3A It is the perspective view of the linear reciprocating mechanism in an embodiment of the present invention.

[0029] Figure 3B It is the perspective view of the horizontal moving mechanism in an embodiment of the present invention.

[0030] Figure 4 It is the front view of the spray gun holder in an embodiment of the present invention.

[0031] Figure 5 It is the perspective view of the spray gun holder in an embodiment of the present invention.

[0032] Figure 6 It is the schematic connection diagram of the spray gun and the telescopic rod in an embodiment of the present invention.

[0033] Figure 7 It is the perspective view of the connecting frame in an embodiment of the present invention.

[0034] Among them, reference numerals:

[0035] 1 Support frame

[0036] 11 Support cross beam

[0037] 12 Support column

[0038] 13 Straight ladder

[0039] 2 Linear reciprocating mechanism

[0040] 21 Base

[0041] 22 Linear guide rail

[0042] 23 Horizontal moving mechanism

[0043] 231 Slide block

[0044] 232 Slide block bracket

[0045] 233 Connecting Frame

[0046] 24 Limit Block

[0047] 25 Driving Mechanism

[0048] 251 Motor

[0049] 252 Reducer

[0050] 253 Support

[0051] 254 Gear

[0052] 255 Protective Cover

[0053] 26 Drag Chain

[0054] 27 Drag Chain Groove

[0055] 3 Spray Gun Frame

[0056] 31 Fixed Rod

[0057] 32 Telescopic Rod

[0058] 33 Cross Beam

[0059] 4 Spray Gun

[0060] 41 Nozzle

[0061] 42 Nozzle Base

[0062] 43 Rotating Shaft

[0063] 5 Connecting Frame

[0064] 51 Connecting Column

[0065] 52 Connecting Rod

[0066] 53 Plate - like Structure

[0067] 54 Fixed Plate

[0068] 6 Workpiece Specific Embodiment

[0069] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and efficacy of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

[0070] References to "embodiment", "another embodiment", "this embodiment", etc. in the specification mean that the described embodiment may include specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. In addition, such expressions do not refer to the same embodiment. Further, when describing specific features, structures, or characteristics in combination with embodiments, it has been shown that combining such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art, whether or not explicitly described.

[0071] In the specification and the subsequent claims, certain terms are used to refer to specific components or parts. Those of ordinary skill in the art should understand that a technical user or manufacturer may use different nouns or terms to refer to the same component or part. The specification and the subsequent claims do not use the difference in names as a way to distinguish components or parts, but use the difference in the functions of components or parts as the criterion for distinction. The terms "comprising" and "including" mentioned throughout the specification and the subsequent claim items are open-ended terms and should be interpreted as "including but not limited to". In addition, the term "connected" herein includes any direct and indirect connection means.

[0072] It should be noted that in the description of the present invention, terms such as "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. For the convenience of clear description, the ordinal terms such as "first", "second", "third", "fourth", etc. mentioned herein are used to distinguish elements, regions, parts from another identical or similar element, region, part, rather than to limit specific elements, regions, parts.

[0073] The present invention provides a spraying device that can be used for surface spraying of large workpieces, such as surface spraying of cylindrical-section workpieces, and is more suitable for foam spraying on the surface of workpieces. The large workpieces in the present invention are relative to small workpieces. The large workpieces such as cylindrical-section workpieces have a length and a diameter both greater than 3 meters, but the present invention is not limited thereto and can be larger workpieces.

[0074] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5, the spraying device of the present invention includes a support frame 1, a linear reciprocating mechanism 2, a spray gun holder 3 and a spray gun 4. The linear reciprocating mechanism 2 is arranged on the support frame 1 and reciprocates horizontally. The spray gun holder 3 is arranged on the linear reciprocating mechanism 2 and reciprocates horizontally along with the linear reciprocating mechanism 2. The spray gun holder 3 includes a fixed rod 31 and a telescopic rod 32, and the telescopic rod 32 is telescopically connected to the fixed rod 31. The spray gun 4 is connected to the telescopic rod 32.

[0075] The present invention does not particularly limit the support frame 1, and any conventional bracket design in the art can be used, or frames of different shapes can be built according to needs. In one embodiment, the support frame 1 of the present invention is a gantry; in another embodiment, the support frame 1 of the present invention includes a support cross beam 11 and at least two support columns 12, and the support cross beam 11 and at least two support columns 12 form a door frame structure. In another embodiment, the support frame 1 may further include two straight ladders 13, which are respectively arranged adjacent to the support columns 12, so as to facilitate the maintenance, repair of the spraying device and the disassembly, assembly and cleaning of the spray gun. In addition, two standing platforms (not shown in the figure) are respectively arranged adjacent to at least two support columns under the support cross beam 11, so as to further facilitate the maintenance, repair of the spraying device and the disassembly, assembly and cleaning of the spray gun.

[0076] The present invention does not particularly limit the connection method and material of the support frame 1. For example, it is integrally formed by welding.

[0077] Please also refer to Figure 3A and Figure 3B , in the present invention, the linear reciprocating mechanism 2 is arranged on the support frame 1 and reciprocates horizontally. In one embodiment, the linear reciprocating mechanism 2 is arranged on the support cross beam 11 and reciprocates along the support cross beam 11. Specifically, at least a part of the components of the linear reciprocating mechanism 2 reciprocate along the support cross beam 11 (horizontal direction). In another embodiment, the linear reciprocating mechanism 2 includes a base 21, a linear guide rail 22, a horizontal moving mechanism 23 and a driving mechanism 25. The base 21 is arranged on the support frame 1; the linear guide rail 22 is arranged on the base 21; the horizontal moving mechanism 23 is arranged on the linear guide rail 22, and the horizontal moving mechanism 23 reciprocates along the linear guide rail 22 under the drive of the driving mechanism.

[0078] In the present invention, the linear guide rail 22 has the same extension direction as the support cross beam 11 and is fixed to the support cross beam 11 through the base 11. In one embodiment, the linear reciprocating mechanism 2 of the present invention is provided with two parallel linear guide rails 22, and the horizontal moving mechanism 23 straddles the parallel linear guide rails and reciprocates along the extension direction of the linear guide rails.

[0079] In one embodiment, the number of the horizontal movement mechanisms 23 of the present invention is at least two, so that the radiation range of each horizontal movement mechanism 23 can be determined according to the length of the workpiece, that is, the distance between adjacent spray guns can be determined.

[0080] In one embodiment, as in the present invention Figure 3A and Figure 3B As shown, the base 21 is arranged on the support frame 1, two mutually parallel linear guide rails 22 are arranged on the base 21, and limit blocks 24 are arranged at the ends of the linear guide rails 22 to limit the horizontal movement of the horizontal movement mechanism 23 within a defined range. The horizontal movement mechanism 23 straddles the parallel linear guide rails 22 and reciprocates along the extending direction of the linear guide rails. Specifically, the horizontal movement mechanism 23 includes two sliders 231, two slider brackets 232 and a connecting frame 233. The two sliders 231 are respectively arranged on the linear guide rails 22 and reciprocate horizontally along the linear guide rails 22. The two slider brackets 232 are respectively arranged on the two sliders 231, and the connecting frame 233 is arranged on the two slider brackets 232. The connecting frame 233 straddles the parallel linear guide rails 22.

[0081] The present invention does not make special limitations on the driving mechanism. In one embodiment, the driving mechanism 25 includes a motor 251 and / or a speed reducer 252, a support 253 and a gear 254. The motor 251 and / or the speed reducer 252 are connected to the support 253, for example, by screws. The support 253 is installed on the connecting frame 233, for example, by screws. The gear 254 is connected to the speed reducer 252, for example, by a flat key, and is fixed at the end with a retaining cover and screws. The connecting frame 233 is arranged between the motor 251 and / or the speed reducer 252 and the support 253, and the support 253 is arranged between the connecting frame 233 and the gear 254. In another embodiment, a protective cover 255 is further arranged outside the motor 251 and / or the speed reducer 252. The motor 251 is, for example, a servo explosion-proof motor. A rack 221 is arranged on one side of the linear guide rail 22 corresponding to the gear 254. The rack 221 is a linear rack and has substantially the same extending direction as the linear guide rail 22. Thus, under the drive of the driving mechanism 25 and the action of the rack 221 and the gear 254, the horizontal movement mechanism 23 reciprocates along the linear guide rail 22. In yet another embodiment, the support 253 is installed on the connecting frame 233 through a long slot, so that the clearance between the gear and the rack can be adjusted.

[0082] In one embodiment, the number of the horizontal movement mechanisms 23 of the present invention is at least two. Through the transmission of the gear and rack, the horizontal movement mechanisms can achieve the same speed and the same direction of movement. The linear reciprocating mechanism 2 is further provided with a drag chain 26 and a drag chain guide groove 27. The drag chain 26 is, for example, a fully enclosed drag chain, in which wires and the like can be placed to protect the wires from being worn. The drag chain 26 is arranged in the drag chain guide groove 27.

[0083] Please refer toFigure 4 and Figure 5 In the present invention, the spray gun holder 3 is arranged on the linear reciprocating mechanism 2 and reciprocates horizontally along with the linear reciprocating mechanism 2. The spray gun holder 3 includes a fixed rod 31 and a telescopic rod 32, and the telescopic rod 32 is telescopically connected to the fixed rod 31. The spray gun 4 is connected to the telescopic rod 32.

[0084] In one embodiment, the spray gun holder 3 of the present invention further includes a cross beam 33, that is, it includes a fixed rod 31, a telescopic rod 32 and a cross beam 33. The cross beam 33 extends horizontally, that is, has the same extension direction as the support cross beam 11. The fixed rod 32 is connected to the cross beam 33 in a T shape or an L shape, and the telescopic rod 32 is telescopically connected to the fixed rod 31. In another embodiment, the fixed rod 32 of the present invention is slidably connected to the cross beam 33 along the extension direction of the cross beam 33. In still another embodiment, the telescopic rod 32 has the same extension direction as the fixed rod 31 and is perpendicular to the extension direction of the cross beam 33, or along the vertical direction.

[0085] In one embodiment, the spray gun holder 3 of the present invention is fixed to the horizontal moving mechanism 23 of the linear reciprocating mechanism 2 through the cross beam 33.

[0086] In one embodiment, the spray gun holder 3 of the present invention includes at least two fixed rods 31 and at least two telescopic rods 32, and each telescopic rod 32 is telescopically connected to a fixed rod 31. Among them, one fixed rod 31 is fixedly connected to one end of the cross beam 33, for example, by threaded fixed connection, and the other fixed rods 31 are slidably connected to the cross beam 33 along the extension direction of the cross beam 33. Specifically, for example, the cross beam 33 is provided with double-sided sliding grooves, and the fixed rod 31 can slide along the double-sided sliding grooves, so as to drive the spray gun 4 to reciprocate horizontally, adjust the distance between adjacent spray guns, and further meet the spraying requirements of workpieces of different lengths. In another embodiment, a fixing mechanism is further provided at the end of the fixed rod 31 connected to the cross beam 33. When it is necessary to fix the fixed rod 31 at a certain position of the cross beam 33 as required, the fixing mechanism can be used for fixing. The present invention does not make special limitations on the fixing mechanism, and any conventional fixing mechanism in the art can be used.

[0087] In one embodiment, the connection between the fixed rod 31 and the cross beam 33 of the present invention is made in the form of double-sided clamping. In this way, during the high-intensity operation of the spraying device, the connection part is not easily broken, the limitations of the traditional fixing method are abandoned, and the applicable range of the device is greatly expanded.

[0088] In the present invention, the telescopic rod 32 is telescopically connected to the fixed rod 31. For example, the telescopic rod 32 can extend into and out of the fixed rod 31 and can be fixed at the desired position to adjust the total length of the fixed rod and the telescopic rod, thereby adjusting the height of the spray gun to adapt to the spraying of workpieces with different heights or diameters. The connection mode of the fixed rod and the telescopic rod in the present invention can quickly and stably adjust the height of the spray gun, and can ensure the stability of the spray gun rod during the high-speed operation of the spraying device, effectively improving the spraying quality and uniformity.

[0089] In one embodiment, the spraying device of the present invention further includes a connecting frame 5. Please refer to Figure 7 at the same time. The connecting frame 5 is respectively connected to the linear reciprocating mechanism 2 and the spray gun frame 3. In one embodiment, the connecting frame 5 includes a connecting column 51 and a connecting rod 52. The connecting column 51 and the connecting rod 52 are connected in a T shape. The connecting column 51 is connected to the horizontal moving mechanism 23 of the linear reciprocating mechanism 2, and the connecting rod 52 is connected to the cross beam 33. The connecting rod 52 and the cross beam 33 have the same extending direction. The design of the connecting frame of the present invention can reduce the length of the spray gun frame in the vertical direction and increase the connecting surface in the horizontal direction of the spray gun frame, further ensuring the stability and safety of the spray gun during use.

[0090] In one embodiment, a plate-like structure 53 is further provided at the end of the connecting column 51 connected to the linear reciprocating mechanism 2. The connecting column 51 is fixedly connected to the linear reciprocating mechanism 2 through the plate-like structure 53. In another embodiment, a fixing plate 54 is further provided at the right angle formed by the connecting column 51 and the connecting rod 52. The fixing plate 54 is, for example, a right triangle to strengthen the connection stability between the connecting column 51 and the connecting rod 52.

[0091] In the present invention, the spray gun 4 is connected to the telescopic rod 32. Please refer to Figure 6 at the same time. In one embodiment, the spray gun 4 includes a spray head 41 and a spray head base 42. The spray head 41 is provided on the spray head base 42, and the spray head base is connected to the telescopic rod 32, for example, by pivot connection. In another embodiment, the spray head base 42 is provided with a through hole, and the telescopic rod 32 is provided with a connection hole. The through hole and the connection hole are fixedly connected through a rotating shaft 43. Specifically, external threads are provided at both ends of the rotating shaft 43, and a shaft shoulder is provided in the middle. Internal threads are respectively provided in the through hole and the connection hole. The rotating shaft 43 is threadedly connected to the through hole and the connection hole respectively, and is spaced by the shaft shoulder, and then can be fixed with gaskets and double nuts. In this way, the direction of the spray head can be adjusted at any time according to needs and then fixed, so that the spray head is in a suitable direction during spraying and will not rotate randomly.

[0092] In one embodiment, the spraying device of the present invention further includes supporting wheels, which are arranged below the linear reciprocating mechanism 2, specifically, below the spray gun 4, and the workpiece 6 is placed on the supporting wheels. In another embodiment, the number of supporting wheels is two, and under drive, the workpiece 6 can rotate with the supporting wheels. In yet another embodiment, the workpiece is a cylindrical-section workpiece, and the cylindrical-section workpiece is horizontally placed on the supporting wheels, that is, the axial direction of the cylindrical-section workpiece extends horizontally.

[0093] The spraying process of the spraying device of the present invention will be briefly described below. The following will be described by taking the cylindrical-section workpiece as an example, but the spraying device of the present invention is not limited to being used for cylindrical-section workpieces.

[0094] According to the length and diameter of the cylindrical-section workpiece, the spraying area of the spray gun is divided. Through the fixed rod 31 connected to the cross beam 33, the adjustment of the distance between the spray guns can be realized. For example, the distance between the spray guns is between 800 mm and 1500 mm; by adjusting the telescopic rod 32, the adjustment of the height of the spray gun can be realized. For example, the adjustment of the spray gun height is between 800 mm and 1000 mm. For example, the distance between the spray guns is 1 meter, the distance between the spray gun and the workpiece in the vertical direction is adjusted to 900 mm, and the spray gun is tilted at a certain angle. Driven by the INVT SERVO controller and equipped with an explosion-proof motor, the synchronous reciprocating movement of the horizontal movement mechanism 23 and the spray gun 4 is controlled. For example, a commutation is completed in 1.5 seconds. The cylindrical-section workpiece is placed on the supporting wheels of 2 carriages, and the workpiece rotates through the supporting wheels to realize the spraying on the surface of the cylindrical-section workpiece.

[0095] Thus, the present invention provides a spraying device, which can adapt to the surface spraying of workpieces of different sizes through the horizontal reciprocating movement of the horizontal movement mechanism, the adjustment of the distance between the spray guns, the adjustment of the height of the spray guns, and the adjustment of the angles of the spray guns. After spraying, the coating quality on the surface of the workpiece is uniform, and the thickness is within the required range. The device of the present invention has been tested in engineering and has a good spraying effect.

[0096] Certainly, the present invention can also have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformations should all fall within the protection scope of the claims of the present invention.

Claims

1. A spraying device for spraying the surface of a workpiece, characterized in that: include: Support frame; A linear reciprocating mechanism is arranged on the supporting frame, and the linear reciprocating mechanism reciprocates in a horizontal direction; A spray gun stand, which is arranged on the linear reciprocating mechanism and reciprocates along the horizontal direction with the linear reciprocating mechanism. The spray gun stand comprises a fixed rod and a telescopic rod, and the telescopic rod is telescopically connected to the fixed rod; as well as A spray gun is connected with the telescopic rod.

2. The spraying device according to claim 1, characterized in that: Also includes: A supporting wheel is arranged below the linear reciprocating mechanism, the workpiece is placed on the supporting wheel and rotates driven by the supporting wheel; and / or the workpiece is a large cylindrical section workpiece; and / or the telescopic rod is telescopically connected to the fixed rod in the vertical direction.

3. The spraying device according to claim 1, characterized in that: The support frame comprises a support crossbeam and at least two support columns, wherein the support crossbeam and the at least two support columns form a door frame structure; the linear reciprocating mechanism is arranged on the support crossbeam.

4. The spraying device according to claim 1, characterized in that: The linear reciprocating mechanism comprises: A base, arranged on the supporting frame; A linear guide rail is arranged on the base; A horizontal moving mechanism, disposed on the linear guide rail; and The driving mechanism drives the horizontal moving mechanism to move back and forth along the linear guide rail.

5. The spraying device according to claim 1, characterized in that: The spray gun rack also includes a crossbeam, and the fixing rod is slidably connected to the crossbeam along an extending direction of the crossbeam.

6. The spraying device according to claim 5, characterized in that: The spray gun rack includes at least two fixed rods and at least two telescopic rods, each telescopic rod is telescopically connected to a fixed rod; one fixed rod is fixedly connected to one end of the beam, and the other fixed rods are slidably connected to the beam along the extension direction of the beam.

7. The spraying device according to claim 5, characterized in that: Also includes: The connecting frame comprises a connecting column and a connecting rod, wherein the connecting column and the connecting rod are connected in a T-shape, the connecting column is connected to the linear reciprocating mechanism, and the connecting rod is connected to the crossbeam.

8. The spraying device according to claim 1, characterized in that: The spray gun comprises a spray head and a spray head base, wherein the spray head is arranged on the spray head base, and the spray head base is pivotally connected to the telescopic rod.

9. The spraying device according to claim 8, characterized in that: The nozzle base is provided with a through hole, the telescopic rod is provided with a connecting hole, and the through hole and the connecting hole are fixedly connected via a rotating shaft.

10. The spraying device according to claim 4, characterized in that: The linear reciprocating mechanism includes at least two horizontal moving mechanisms, and the at least two horizontal moving mechanisms move in the same direction and at the same speed.

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