A robot for spraying automotive spoilers

Abstract

The present invention relates to the field of spraying technology, and discloses a robot for spraying automobile spoilers, including: a first frame, on which a lifting frame is slidably installed, and the lifting frame is driven by a first driving source to perform lifting motion. A driving assembly is arranged on the lifting frame. By drying and curing the uncured paint surface of the automobile spoiler before turning it over, the present invention effectively avoids the problem of paint surface damage caused by the uncured paint surface during the turning process, ensuring the integrity and beauty of the paint surface. Moreover, the lifting frame component descends at a uniform speed to avoid damage to the paint surface caused by the too-fast descending speed of the automobile spoiler. At the same time, during the ascending and resetting process, through precise control of the driving assembly, it is ensured that the underside of the already dried and cured automobile spoiler can be accurately turned upwards without error, realizing the efficient connection and precise operation of the production process, and greatly improving the production efficiency of spraying and drying automobile spoilers.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying, and particularly relates to a robot for spraying automobile spoilers. Background Art

[0002] The painting process in the production of automobile spoilers involves multiple important steps. First is the pretreatment stage, where the surface of the spoiler needs to be carefully polished to remove any possible unevenness, followed by thorough dust removal to ensure a clean surface. Then, a primer is applied to provide a good adhesion basis for subsequent painting. Next, the spoiler is evenly painted using an automatic painting line. After painting, a hot air, infrared, or ultraviolet drying system is used to quickly cure the paint surface.

[0003] Painting is of great significance to automobile spoilers. It can not only protect the spoiler material from daily wear and tear and the erosion of external moisture, thus effectively extending the service life of the spoiler. However, when the current painting devices mainly adopt the single-sided painting method, that is, after painting one side of the spoiler, it must be flipped over to paint the other side. For example, the patent publication number is CN213855358U. However, during the flipping process, due to the influence of gravity and centrifugal force, the yet-to-be-cured paint surface is extremely prone to deformation, easily resulting in sagging, orange peel texture, or uneven local thickness, damaging the smoothness of the painted surface of the spoiler. Based on this, the present invention purposefully provides a robot for spraying automobile spoilers that can improve the painting efficiency while avoiding the problem of paint surface deformation caused by flipping the spoiler. Summary of the Invention

[0004] The purpose of the present invention is to provide a robot for spraying automobile spoilers in view of the deficiencies of the prior art, so as to solve the technical problems in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A robot for spraying automobile spoilers, comprising:

[0007] A first frame, on which a lifting frame is slidably installed. The lifting frame is driven by a first driving source to perform lifting movement. A driving component is arranged on the lifting frame. A U-shaped frame is rotatably installed on the lifting frame. The U-shaped frame is connected to the driving component. A clamping component is arranged inside the U-shaped frame. The clamping component is used for clamping and fixing the automobile spoiler. A moving seat is slidably installed on the top of the first frame. A robotic arm is rotatably installed on the moving seat. The robotic arm is driven by an output source built in the moving seat to rotate. A paint spraying head is fixedly installed at the movable end of the robotic arm. The paint spraying head is communicated with a liquid supply tank through an infusion pipe;

[0008] A second frame, the second frame is located at one side of the first frame, a drying lamp is slidably installed in the second frame, and the drying lamp is driven to move by a second driving source built in the second frame;

[0009] When the lifting frame is at the highest position, the paint spraying head sprays paint on the rear wing of the car clamped by the clamping assembly, and then the first driving source drives the lifting frame to descend to the lowest position at a uniform speed, and the second driving source drives the drying lamp to move above the rear wing of the car, and the drying lamp dries the paint surface of the rear wing of the car, and then the first driving source drives the lifting frame to rise and reset, and during the rising process, the driving assembly drives the U-shaped frame to flip 180 degrees;

[0010] There are two lifting frames, a linkage assembly is provided on the first frame, the two lifting frames are connected by the linkage assembly and the two lifting frames move towards each other, and each lifting frame has a corresponding second frame, when the first driving source drives the lifting frame to descend, the lifting frame drives the other lifting frame to rise through the linkage assembly;

[0011] The linkage assembly includes a first rack plate, a second gear and a second rack plate, the second gear is rotatably installed in the first frame, the first rack plate and the second rack plate are respectively fixedly connected to two lifting frames, and the second gear is located between the first rack plate and the second rack plate, the first rack plate is meshed with the second gear, and the second rack plate is meshed with the second gear.

[0012] As a further solution of the present invention: the driving assembly includes a fixed rack plate, a driven wheel, a transmission shaft, a synchronous belt, a first gear and a ratchet assembly; the driven wheel, the transmission shaft and the first gear are all rotatably mounted on the lifting frame, and the driven wheel is coaxially and fixedly connected to the U-shaped frame rotating shaft, the transmission shaft is transmission-connected to the driven wheel through a synchronous belt, and the first gear is transmission-connected to the transmission shaft through a ratchet assembly; the fixed rack plate is fixedly mounted on the second frame, and the first gear is meshed with the fixed rack plate; when the lifting frame descends, the first gear rotates under the action of the fixed rack plate, and at this time the first gear is rotationally connected to the transmission shaft through the ratchet assembly; when the lifting frame rises, the first gear rotates under the action of the fixed rack plate, and at this time the first gear drives the transmission shaft to rotate synchronously through the ratchet assembly.

[0013] As a further solution of the present invention: the ratchet assembly includes an inner ratchet and a pawl, the inner ratchet is fixedly installed on the inner wall of the first gear, and the two are coaxially arranged, a plurality of pawls are rotatably installed on the outer cylindrical surface of the transmission shaft, and a plurality of pawls are circumferentially arranged, when the lifting frame descends, the first gear rotates to make the inner ratchet and the pawl slide together, and when the lifting frame rises, the first gear rotates to make the inner ratchet and the pawl engage.

[0014] As a further solution of the present invention: an interception cloth is provided on the second rack, and the interception cloth is located below the drying lamp. After the car wing is painted and dried, the clamping assembly feeds the car wing onto the interception cloth.

[0015] As a further solution of the present invention: a fixed rod is fixedly installed on the second rack, a lifting rod is slidably installed on the second rack, and the lifting rod is driven by a third driving source to perform lifting motion. Both ends of the interception cloth are fixedly installed on the fixed rod and the lifting rod respectively. When the lifting rod rises to the same height as the fixed rod, the interception cloth is in a slack state, and when the lifting rod descends, the interception cloth is in a taut state.

[0016] As a further solution of the present invention: when both sides of the car wing are dried, the lifting frame rises. When the U-shaped frame is flipped by ninety degrees, the opening of the U-shaped frame faces downward. At this time, the clamping assembly feeds the car wing onto the interception cloth.

[0017] Advantages of the present invention:

[0018] 1. In the present invention, by performing the turning operation after the uncured paint surface of the car wing is dried and cured, the problem of paint surface damage caused by the wet paint surface during the turning process is effectively avoided, ensuring the integrity and beauty of the paint surface. And in order to avoid damage to the paint surface caused by the too fast descending speed of the car wing, the descending of the lifting frame component is strictly controlled to be uniform, further reducing the risk of paint surface damage. At the same time, during the ascending and resetting process, through the precise control of the driving assembly, it is ensured that the car wing with the dried and cured paint surface below can accurately turn the unpainted side upward, realizing the efficient connection and precise operation of the production process, and greatly improving the production efficiency of painting and drying the car wing.

[0019] 2. In the present invention, by providing two lifting frames, when the car wing on one lifting frame is painted, it needs to descend to the lowest position for drying operation, and the descending of this lifting frame will drive the other lifting frame to rise through the linkage component. At this time, the car wing on the other lifting frame rises to the painting position, and the moving seat can rotate 180 degrees, so as to spray paint on the car wing on the other lifting frame through the robotic arm and the paint spraying head. In this way, the paint spraying head is efficiently connected to spray paint on the two car wings alternately, improving the speed of mass-producing car wings.

[0020] 3. In the present invention, when the second side of the car wing is painted and dried, it is located above the interception cloth. At this time, the car wing can be directly fed onto the interception cloth through the clamping assembly, without bringing the dried car wing back to the painting area for feeding and then reloading. In this way, it is only necessary to directly install the car wing to be painted on the clamping assembly in the painting area, improving the speed of replacing the car wing. Description of the Drawings

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 in the present invention Figure 1 a front view schematic diagram;

[0024] Figure 3 is a schematic diagram of the internal ratchet sectional structure in the present invention;

[0025] Figure 4 is a schematic diagram of the structure of the second frame in the present invention;

[0026] Figure 5 is a schematic diagram of the structure of the first frame in the present invention;

[0027] Figure 6 is a schematic diagram of the inverted U-shaped frame structure in the present invention.

[0028] In the figure: 1. First frame; 101. Threaded rod; 2. Lifting frame; 3. U-shaped frame; 4. Clamping assembly; 5. Moving seat; 6. Robot arm; 7. Spray head; 8. Second frame; 801. Fixed rod; 802. Lifting rod; 9. Drying lamp; 10. Fixed rack plate; 11. Driven wheel; 12. Transmission shaft; 13. Synchronous belt; 14. First gear; 15. Internal ratchet; 16. Pawl; 17. First rack plate; 18. Second gear; 19. Second rack plate; 20. Intercepting cloth. Specific embodiments

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 as shown, the present invention is a robot for spraying an automobile spoiler, including:

[0031] The first rack 1, on which a lifting frame 2 is slidably mounted. The lifting frame 2 is driven by a first driving source to perform lifting motion. A driving assembly is provided on the lifting frame 2. A U-shaped frame 3 is rotatably mounted on the lifting frame 2. The U-shaped frame 3 is connected to the driving assembly. A clamping assembly 4 is arranged inside the U-shaped frame 3. The clamping assembly 4 is used for clamping and fixing an automobile spoiler. A moving seat 5 is slidably mounted on the top of the first rack 1. A robotic arm 6 is rotatably mounted on the moving seat 5. The robotic arm 6 is driven by an output source built in the moving seat 5 to rotate. A paint spraying head 7 is fixedly mounted at the movable end of the robotic arm 6. The paint spraying head 7 is communicated with a liquid supply tank through an infusion pipe;

[0032] The second rack 8, which is located on one side of the first rack 1. A drying lamp 9 is slidably mounted inside the second rack 8. The drying lamp 9 is driven by a second driving source built in the second rack 8 to move;

[0033] When the lifting frame 2 is at the highest position, the paint spraying head 7 sprays paint on the automobile spoiler clamped by the clamping assembly 4. Subsequently, when the first driving source drives the lifting frame 2 to descend uniformly to the lowest position, the second driving source drives the drying lamp 9 to move above the automobile spoiler, and the drying lamp 9 dries the paint surface of the automobile spoiler. Then, the first driving source drives the lifting frame 2 to rise and reset. During the rising process, the driving assembly drives the U-shaped frame 3 to flip 180 degrees;

[0034] The number of the lifting frames 2 is two. A linkage assembly is provided on the first rack 1. The two lifting frames 2 are connected through the linkage assembly and move towards each other. And each lifting frame 2 has a corresponding second rack 8. When the first driving source drives the lifting frame 2 to descend, this lifting frame 2 drives the other lifting frame 2 to rise through the linkage assembly;

[0035] The linkage assembly includes a first rack plate 17, a second gear 18 and a second rack plate 19. The second gear 18 is rotatably mounted inside the first rack 1. The first rack plate 17 and the second rack plate 19 are respectively fixedly connected to the two lifting frames 2. And the second gear 18 is located between the first rack plate 17 and the second rack plate 19. The first rack plate 17 meshes with the second gear 18. The second rack plate 19 meshes with the second gear 18.

[0036] In one case of this embodiment, the first driving source includes a threaded rod 101 driven by a motor. The threaded rod 101 is rotatably installed in the first rack 1, and the threaded rod 101 is threadedly connected to the lifting frame 2. Of course, the first driving source, the second driving source, and the output source can all be selected from components such as electric cylinders and electric telescopic rods, or other mechanisms capable of realizing linear reciprocating motion. This embodiment does not make specific limitations here; it should be noted that the clamping assembly 4 of the present invention includes a clamping plate for clamping the car spoiler and a driving source for driving the clamping plate to move. The liquid supply tank includes a liquid supply pump for pumping the paint in the liquid supply tank to the paint spraying head 7 through the liquid delivery pipe. The above components, as well as the moving seat 5 and the robotic arm 6, are all prior arts, and the present invention has not improved them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of the present invention.

[0037] The working principle of the present invention: First, the car spoiler is clamped and fixed on the U-shaped frame 3 through the clamping assembly 4. Then, the first driving source raises the lifting frame 2 to the highest position. At this time, the paint spraying head 7 can be driven to move through the moving seat 5 and the robotic arm 6 to spray the upper surface of the car spoiler. After one side is sprayed, the first driving source drives the lifting frame 2 to descend to the lowest position. Then, the second driving source drives the drying lamp 9 to move above the car spoiler to dry the uncured paint surface through the drying lamp 9. After drying, the drying lamp 9 retracts back into the second rack 8 to avoid blocking the lifting of the lifting frame 2. Then, the first driving source drives the lifting frame 2 to rise back to the highest position. During the rising process of the lifting frame 2, the driving assembly will drive the U-shaped frame 3 to rotate 180 degrees, so that the car spoiler rotates 180 degrees. The cured side of the car spoiler's paint surface is flipped downward, and the unpainted side is flipped upward. Then, the paint spraying head 7 sprays the upward-facing side of the car spoiler. After spraying, the lifting frame 2 descends, driving the U-shaped frame 3 to move to the lowest position, and then the drying lamp 9 is used to dry and cure the paint surface of the car spoiler. In this way, an operation of spraying and drying both sides of a car spoiler is completed. Subsequently, the clamping of the car spoiler is released through the clamping assembly 4, and the car spoiler is replaced to start the next round of spraying operation;

[0038] In this way, by performing the turning operation after the uncured paint surface of the car spoiler is dried and cured, it effectively avoids the problem of paint surface damage caused by the wet paint surface during the turning process, ensuring the integrity and beauty of the paint surface. And in order to avoid damage to the paint surface caused by the too-fast descending speed of the car spoiler, the descending speed of the lifting frame 2 component is strictly controlled, further reducing the risk of paint surface damage. At the same time, during the rising and resetting process, through precise control of the driving assembly, it is ensured that the car spoiler with the dried and cured lower part can accurately turn the unpainted side upward, realizing the efficient connection and precise operation of the production process, and greatly improving the production efficiency of car spoiler spraying and drying.

[0039] In actual application, the present embodiment can alternately perform painting and drying operations by setting two lifting frames 2. After the car tail wing on one lifting frame 2 is painted, it needs to be lowered to the lowest position for drying. The lowering of the lifting frame 2 will drive the other lifting frame 2 to rise through the linkage assembly. At this time, the car tail wing on the other lifting frame 2 rises to the painting position, and the moving seat 5 can rotate 180 degrees, so that the car tail wing on the other lifting frame 2 can be painted through the mechanical arm 6 and the paint head 7. In this way, the paint head 7 can efficiently connect the two car tail wings to alternately paint, thereby improving the speed of mass production of car tail wings.

[0040] In practical application, if Figure 2 Taking the figure as an example, assuming that the lifting frame 2 fixedly connected to the first rack plate 17 is driven by the first driving source to lift, when the lifting frame 2 descends, the first rack plate 17 drives the second gear 18 to rotate, and the second gear 18 drives the second rack plate 19 to rise, and the second rack plate 19 drives another lifting frame 2 to rise synchronously, thereby achieving the purpose of the two lifting frames 2 moving towards each other, realizing the operations of alternating painting and drying, and only needs one power source, which improves production efficiency while saving energy consumption.

[0041] like Figures 1-5 As shown, as a preferred embodiment of the present invention, the driving assembly includes a fixed rack plate 10, a driven wheel 11, a transmission shaft 12, a synchronous belt 13, a first gear 14 and a ratchet assembly. The driven wheel 11, the transmission shaft 12 and the first gear 14 are all rotatably mounted on the lifting frame 2, and the driven wheel 11 is coaxially fixedly connected with the rotating shaft of the U-shaped frame 3, the transmission shaft 12 is transmission-connected to the driven wheel 11 through the synchronous belt 13, and the first gear 14 is transmission-connected to the transmission shaft 12 through the ratchet assembly. The fixed rack plate 10 is fixedly mounted on the second frame 8, and the first gear 14 is meshed with the fixed rack plate 10. When the lifting frame 2 descends, the first gear 14 rotates under the action of the fixed rack plate 10. At this time, the first gear 14 is rotationally connected to the transmission shaft 12 through the ratchet assembly. When the lifting frame 2 rises, the first gear 14 rotates under the action of the fixed rack plate 10. At this time, the first gear 14 drives the transmission shaft 12 to rotate synchronously through the ratchet assembly.

[0042] In one case of the present embodiment, the radius of the transmission shaft 12 is smaller than the radius of the driven wheel 11. This arrangement is to allow the lifting frame 2 to descend to a sufficient height, that is, the first gear 14 and the transmission shaft 12 have to rotate multiple times to drive the driven wheel 11 to rotate 180 degrees to achieve the flipping of the car rear wing. In this way, the position where the paint spraying head 7 sprays the car rear wing and the position where the drying lamp 9 dries the car rear wing can be separated in height.

[0043] In actual application of this embodiment, when the lifting frame 2 descends, the meshing action of the first gear 14 and the fixed rack plate 10 causes the first gear 14 to rotate. At this time, the first gear 14 is rotatably connected with the transmission shaft 12 through the ratchet assembly, that is, the rotation of the first gear 14 will not drive the transmission shaft 12 to rotate, so that the uncured paint surface on the rear wing of the automobile is always facing upward; and when the paint surface is dried and cured, when the lifting frame 2 rises, the first gear 14 rotates in the opposite direction under the action of the fixed rack plate 10. At this time, the first gear 14 drives the transmission shaft 12 to rotate synchronously through the ratchet assembly, and the transmission shaft 12 drives the driven wheel 11 to rotate synchronously through the synchronous belt 13, and the driven wheel 11 drives the U-shaped frame 3 to rotate, thereby driving the rear wing of the automobile to turn over, until the lifting frame 2 rises and resets, and the driven wheel 11 just drives the U-shaped frame 3 to rotate one hundred and eighty degrees.

[0044] like Figures 1-6 As shown, as a preferred embodiment of the present invention, the ratchet assembly includes an inner ratchet 15 and a pawl 16, the inner ratchet 15 is fixedly mounted on the inner wall of the first gear 14, and the two are coaxially arranged, a plurality of pawls 16 are rotatably mounted on the outer cylindrical surface of the transmission shaft 12, and a plurality of pawls 16 are circumferentially arranged, when the lifting frame 2 descends, the first gear 14 rotates so that the inner ratchet 15 and the pawl 16 slide together, and when the lifting frame 2 rises, the first gear 14 rotates so that the inner ratchet 15 and the pawl 16 engage.

[0045] In actual application, the cooperation of the pawl 16 and the inner ratchet 15 can achieve the effect that when the lifting frame 2 descends, the transmission shaft 12 is stationary, and when the lifting frame 2 rises, the transmission shaft 12 rotates, thereby ensuring that the rear wing of the automobile is stationary when moving from the painting area to the drying area, and can achieve the effect of automatic flipping when moving from the drying area to the painting area, thereby improving the continuity of the production process.

[0046] like Figures 1-6 As shown, as a preferred embodiment of the present invention, an interception cloth 20 is provided on the second frame 8, and the interception cloth 20 is located below the drying lamp 9. When the car rear wing is finished painting and drying, the clamping assembly 4 unloads the car rear wing onto the interception cloth 20.

[0047] In actual application of this embodiment, after the second side of the car rear wing is painted and dried, it is located above the intercepting cloth 20. At this time, the car rear wing can be directly unloaded onto the intercepting cloth 20 through the clamping assembly 4, and there is no need to bring the dried car rear wing back to the painting area for unloading and then loading. In this way, it is only necessary to directly install the car rear wing to be painted on the clamping assembly 4 in the painting area, which improves the speed of replacing the car rear wing. In addition, the intercepting cloth 20 is made of flexible cloth, and the car rear wing falling on it can prevent the paint surface from being damaged due to rigid collision.

[0048] like Figures 1-6As shown, as a preferred embodiment of the present invention, a fixed rod 801 is fixedly installed on the second frame 8, a lifting rod 802 is slidably installed on the second frame 8, the lifting rod 802 is driven by a third driving source to perform lifting motion, and both ends of the interception cloth 20 are fixedly installed on the fixed rod 801 and the lifting rod 802 respectively. When the lifting rod 802 rises to the same height as the fixed rod 801, the interception cloth 20 is in a relaxed state. When the lifting rod 802 descends, the interception cloth 20 is in a taut state.

[0049] In one case of this embodiment, the third driver can be an electric cylinder, an electric telescopic rod and other components, or other mechanisms capable of realizing linear reciprocating motion. This embodiment does not make specific limitations here.

[0050] In actual application of this embodiment, when blanking the car wing, when the lifting rod 802 rises to the same height as the fixed rod 801, at this time the interception cloth 20 is in a relaxed state, and the car wing is blanked onto the interception cloth 20 and is in a state of being held by the interception cloth 20, which can further prevent the car wing from being damaged by collision. Subsequently, the lifting rod 802 is lowered. At this time, the interception cloth 20 is in a taut state, and the interception cloth 20 becomes inclined. Because the horizontal height of the lifting rod 802 is lower than that of the fixed rod 801, the car wing will slide down along the inclined surface of the interception cloth 20 to the side close to the lifting rod 802, so that it is convenient for the staff to take the painted car wing from the lifting rod 802, avoiding the problem that the car wing is randomly distributed when blanked onto the interception cloth 20, resulting in inconvenient material taking.

[0051] As Figures 1-6 shown, as a preferred embodiment of the present invention, when both sides of the car wing are dried, the lifting frame 2 rises. When the U-shaped frame 3 is flipped 90 degrees, the opening of the U-shaped frame 3 faces downward. At this time, the clamping assembly 4 blanks the car wing onto the interception cloth 20.

[0052] In actual application of this embodiment, considering that the U-shaped frame 3 is U-shaped and the existing clamping assembly 4 usually clamps the car wing in an up-and-down clamping manner, the blanking time of the clamping assembly 4 onto the interception cloth 20 can be designed. The lifting frame 2 rises. When the U-shaped frame 3 is flipped 90 degrees, the opening of the U-shaped frame 3 faces downward. At this time, the clamping of the car wing by the clamping assembly 4 can be regarded as left-and-right clamping. As Figure 6 shown as an example, blanking the car wing at this time can ensure that the U-shaped frame 3 and the clamping assembly 4 do not block the blanking of the car wing;

[0053] More importantly, at this time, the car wing falls onto the interception cloth 20 with its side facing downwards, avoiding any paint surface falling onto the interception cloth 20 from above. Instead, it first contacts the interception cloth 20 through the side of the car wing, absorbing most of the impact, thereby protecting the freshly dried and cured paint surface.

[0054] The above has described an embodiment of the present invention in detail. However, the above content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A robot for spraying an automobile spoiler, characterized in that, Including: A first frame (1), on which a lifting frame (2) is slidably mounted. The lifting frame (2) is driven by a first driving source to perform lifting movement. A driving assembly is arranged on the lifting frame (2). A U-shaped frame (3) is rotatably mounted on the lifting frame (2). The U-shaped frame (3) is connected to the driving assembly. A clamping assembly (4) is arranged inside the U-shaped frame (3). The clamping assembly (4) is used for clamping and fixing an automobile spoiler. A moving seat (5) is slidably mounted on the top of the first frame (1). A robotic arm (6) is rotatably mounted on the moving seat (5). The robotic arm (6) is driven by an output source built in the moving seat (5) to rotate. A paint spray head (7) is fixedly mounted at the movable end of the robotic arm (6). The paint spray head (7) is communicated with a liquid supply tank through an infusion pipe; A second frame (8), which is located on one side of the first frame (1). A drying lamp (9) is slidably mounted inside the second frame (8). The drying lamp (9) is driven by a second driving source built in the second frame (8) to move; When the lifting frame (2) is at the highest position, the paint spray head (7) sprays paint on the automobile spoiler clamped by the clamping assembly (4). Then, when the first driving source drives the lifting frame (2) to descend uniformly to the lowest position, the second driving source drives the drying lamp (9) to move above the automobile spoiler, and the drying lamp (9) dries the paint surface of the automobile spoiler. Then, the first driving source drives the lifting frame (2) to rise and reset. During the rising process, the driving assembly drives the U-shaped frame (3) to flip 180 degrees; The number of the lifting frames (2) is two. A linkage assembly is arranged on the first frame (1). The two lifting frames (2) are connected through the linkage assembly and move towards each other. And each lifting frame (2) has a corresponding second frame (8). When the first driving source drives the lifting frame (2) to descend, the lifting frame (2) drives the other lifting frame (2) to rise through the linkage assembly; The linkage assembly includes a first rack plate (17), a second gear (18) and a second rack plate (19). The second gear (18) is rotatably mounted inside the first frame (1). The first rack plate (17) and the second rack plate (19) are respectively fixedly connected to the two lifting frames (2). And the second gear (18) is located between the first rack plate (17) and the second rack plate (19). The first rack plate (17) meshes with the second gear (18), and the second rack plate (19) meshes with the second gear (18).

2. The robot for spraying an automobile spoiler according to claim 1, wherein The driving assembly comprises a fixed rack plate (10), a driven wheel (11), a transmission shaft (12), a synchronous belt (13), a first gear (14) and a ratchet assembly. The driven wheel (11), the transmission shaft (12) and the first gear (14) are all rotatably mounted on the lifting frame (2), and the driven wheel (11) is coaxially fixedly connected to the rotating shaft of the U-shaped frame (3). The transmission shaft (12) is transmission-connected to the driven wheel (11) via the synchronous belt (13), and the first gear (14) is transmission-connected to the transmission shaft (12) via the ratchet assembly. The fixed rack plate (10) is fixedly mounted on the second frame (8), and the first gear (14) is meshed with the fixed rack plate (10). When the lifting frame (2) descends, the first gear (14) rotates under the action of the fixed rack plate (10), and the first gear (14) is rotationally connected to the transmission shaft (12) through a ratchet assembly. When the lifting frame (2) ascends, the first gear (14) rotates under the action of the fixed rack plate (10), and the first gear (14) drives the transmission shaft (12) to rotate synchronously through the ratchet assembly.

3. The robot for spraying the car spoiler according to claim 2, characterized in that, The ratchet assembly comprises an inner ratchet (15) and a pawl (16); the inner ratchet (15) is fixedly mounted on the inner wall of the first gear (14), and the two are coaxially arranged; a plurality of pawls (16) are rotatably mounted on the outer cylindrical surface of the transmission shaft (12), and the plurality of pawls (16) are circumferentially arranged; when the lifting frame (2) descends, the first gear (14) rotates so that the inner ratchet (15) and the pawl (16) are slidably matched; when the lifting frame (2) ascends, the first gear (14) rotates so that the inner ratchet (15) and the pawl (16) are engaged.

4. A robot for spraying an automobile spoiler according to claim 1, characterized in that, An interception cloth (20) is provided on the second frame (8), and the interception cloth (20) is located below the drying lamp (9). When the automobile rear wing is finished being painted and dried, the clamping assembly (4) unloads the automobile rear wing onto the interception cloth (20).

5. A robot for spraying an automobile spoiler according to claim 4, characterized in that, A fixing rod (801) is fixedly mounted on the second frame (8), and a lifting rod (802) is slidably mounted on the second frame (8); the lifting rod (802) is driven by a third driving source to perform lifting movement; two ends of the intercepting cloth (20) are respectively fixedly mounted on the fixing rod (801) and the lifting rod (802); when the lifting rod (802) rises to the same height as the fixing rod (801), the intercepting cloth (20) is in a relaxed state; when the lifting rod (802) descends, the intercepting cloth (20) is in a taut state.

6. The robot for spraying an automobile spoiler according to claim 5, wherein, When both sides of the automobile tail wing are dried, the lifting frame (2) rises, and when the U-shaped frame (3) turns over 90 degrees, the opening of the U-shaped frame (3) faces downward, and at this time, the clamping assembly (4) lowers the automobile tail wing onto the intercepting cloth (20).

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