CN115283177B - A CNC intelligent exterior paint spraying equipment - Google Patents

Abstract

The invention belongs to the field of intelligent spraying equipment, and particularly relates to digital control intelligent external paint surface spraying equipment, which comprises a fixed bottom plate and a lifting slide plate, wherein the lifting slide plate is arranged above the fixed bottom plate in a sliding manner, a sliding plate is arranged above the lifting slide plate in a sliding manner, a storage box is fixedly arranged on the sliding plate, one side of the upper end surface of the storage box is provided with a storage box feed inlet which is inclined inwards, a storage bin is arranged in the storage box below the storage box feed inlet, a stirring shaft is rotatably arranged in the storage bin, one end of the stirring shaft is arranged at the bottom of the storage bin, the other end of the stirring shaft is connected with a filter screen plate, one side of the filter screen plate is provided with an intercommunication bin in the storage box, one side of the intercommunication bin is provided with a spraying bin on the outer end surface of the storage box, a first rotating impeller is rotationally arranged in the spraying bin, a plurality of first spraying heads are uniformly arranged on the spraying base along the linear direction, and the corner spraying of a plurality of different forms can be effectively realized.

Description

A CNC intelligent exterior paint spraying equipment

Technical Field

The invention belongs to the field of intelligent spraying equipment, and in particular relates to a digitally controlled intelligent exterior paint spraying equipment.

Background technique

With the popularization of intelligent manufacturing equipment, people also have certain requirements for the appearance of manufacturing equipment. Among them, the paint treatment of the outer surface not only has good aesthetics, but also can ensure that the metal of the equipment will not corrode, so it is favored by most companies. Among them, paint spraying treatment, as a means of quickly completing the treatment, has also entered people's production environment, but paint spraying has a wide spraying range, so the operator is very likely to inhale the respiratory tract when spraying paint with a spray gun, thus affecting the health of the body. The common intelligent spraying equipment on the market is mostly large-scale spraying, lacking the treatment of corners, but in fact, if the corners are not treated, they are more likely to cause corrosion damage. Therefore, it is of great significance to design a CNC intelligent equipment that can cope with spraying treatment in corners.

Summary of the invention

The purpose of the present invention is to solve the above problems in the prior art and to propose a digitally controlled intelligent exterior paint spraying device, which can intelligently spray various corners.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a CNC intelligent exterior paint spraying equipment, including a fixed bottom plate, a lifting slide plate, a lifting slide plate is slidably arranged above the fixed bottom plate, a telescopic rod base is arranged at the four corners of the lifting slide plate, a telescopic rod is arranged in the telescopic rod base, one end of the bottom of the telescopic rod is connected to the upper surface of the fixed bottom plate, a sliding plate is slidably arranged above the lifting slide plate, a material storage box is fixedly arranged on the sliding plate, and a material storage box feeding port inclined inward is arranged on one side of the upper end surface of the material storage box. A storage bin is arranged in the storage bin below the feed inlet of the storage bin, a stirring shaft is arranged to rotate in the storage bin, one end of the stirring shaft is arranged at the bottom of the storage bin, a filter screen is connected to the other end of the stirring shaft, an intercommunication bin is arranged in the storage bin on one side of the filter screen, a spray bin is arranged to communicate with the outer end face of the storage bin on one side of the intercommunication bin, a first rotating impeller is arranged to rotate in the spray bin, a spray base is arranged on one side of the first rotating impeller on the end face of the spray bin, and a plurality of first spray heads are evenly arranged on the spray base in a straight line direction. The design of the spray base enables the equipment to cope with a wide range of spraying needs.

Preferably, steering wheels are provided at the four corners of the bottom of the fixed base plate, a first cylinder is fixedly provided on the upper surface of the fixed base plate above the steering wheel, a first push rod is slidably provided at the output end of the first cylinder, the other end of the first push rod is connected to the bottom of the lifting slide plate, and a pump is provided on one side of the bottom of the fixed base plate.

Preferably, slide rails are provided on both sides of the upper end surface of the lifting slide plate, a slider is slidably provided on the slide rails, a sliding plate is connected to the top of the slider, a second cylinder is fixedly provided on one side of the sliding plate above the lifting slide plate, a second push rod is slidably provided on the output end of the second cylinder, a connecting plate is connected to the other end of the second push rod, and one end of the connecting plate is fixedly provided on the bottom of the sliding plate.

Preferably, the stirring shaft is rotatably arranged on a rotating shaft, one end of the rotating shaft extends out of the side wall of the storage bin, a first driving motor is arranged on the end of the rotating shaft extending out of the side wall of the storage bin, an output end of the first driving motor is connected to an end face of the rotating shaft, and the first driving motor is fixedly arranged on a first driving motor base. The design of the rotating shaft prevents the raw materials entering the storage bin from solidifying.

Preferably, a drying chamber is arranged on both sides of the first rotating impeller in the spray chamber, the first rotating impeller is rotatably arranged on a rotating rod, both ends of the rotating rod are rotatably arranged in the drying chamber, a second rotating impeller is rotatably arranged at one end of the rotating rod arranged in the drying chamber, a heating plate is arranged in the drying chamber on the side of the second rotating impeller close to the first spray head, a drying nozzle is arranged on the other side of the heating plate on the end surface of the drying chamber, and a drying chamber air inlet is arranged on the side wall of the bottom of the drying chamber on one side of the drying nozzle. Through the linkage design of the drying chamber, the spraying surface can be dried in time during large-scale spraying to avoid wall hanging and other situations.

Preferably, linkage bins are provided in the storage box on both sides of the storage bin, an air inlet is provided at the bottom of the linkage bin, a first spring is connected to the bottom of the linkage bin on one side of the air inlet, a linkage block is connected to the other end of the first spring, the linkage block is slidably arranged in the linkage bin, a linkage block bin is provided in the linkage block, an end of the linkage block bin away from the first spring is provided with a bin discharge port, a spraying telescopic rod base is provided on the end surface of the linkage block bin outside the bin discharge port, a spraying telescopic rod is slidably arranged in the base of the spraying telescopic rod, a material pipeline is provided in the spraying telescopic rod, the material pipeline is connected and communicated with the bin discharge port, a connecting pipe is interconnected on the end surface of the spraying telescopic rod, the other end of the connecting pipe is interconnected with a second spraying head, and the second spraying head is provided with a mesh base at the connection point of the connecting pipe. The other end of the spraying telescopic rod is connected with a second spring, and the other end of the second spring is connected to the bottom of the base of the spraying telescopic rod. Through the linkage design of the linkage bin, the second spray head can be extended from both sides of the storage box, so that the second spray head of the equipment can be extended into the corner and spray it.

Preferably, the mesh base is fixedly provided with a second driving motor at one end in the second spray head, the output end of the second driving motor is connected with a rotating connecting rod, the other end of the rotating connecting rod is connected with the top of the second spray head, and the outer surface of the second spray head is provided with a plurality of spray ports. Through the design of the second driving motor, the second spray head can be rotated, and the spray ports can also be rotated, which greatly increases the range of spraying in the corners and effectively avoids the generation of dead angles.

Preferably, the linkage block silo is provided with a silo feed port near the intercommunication silo, and the intercommunication silo is provided with an intercommunication silo control valve on the side wall near the linkage block silo, and the linkage block silo can be connected and intercommunication with the intercommunication silo control valve when sliding to one side. Through the design of the intercommunication silo control valve, the spraying raw material can smoothly enter the linkage block silo, and then be reasonably sprayed out at the second spray head.

Preferably, jet chambers are provided on both sides of the storage bin, jet ports are provided on the same side of the jet chamber and the first spray head, and a control valve is provided at the connection between the jet chamber and the storage bin. Through the linkage design of the jet chamber, the equipment can remove dust from the surface of the object before the large-scale spraying process, effectively avoiding dust contamination.

Beneficial effects:

1. The present invention adopts the linkage design of the first rotating impeller and the rotating rod, so that the first spray head can complete the drying of the paint surface during the large-scale spraying process, effectively shortening the drying time and avoiding other situations.

2. The present invention uses the linkage design of the linkage block to enable the equipment to enter the corner for spraying. At the same time, the rotatable design of the second spray head effectively increases the spraying range and effectively avoids the generation of dead corners.

3. The present invention adopts the linkage design of the jet chamber, so that it can be used for dust removal when no corner spraying is performed, thereby effectively avoiding dust contamination.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of the present invention;

Fig. 2 is a front view of the present invention;

FIG3 is a top view of the present invention;

Fig. 4 is a cross-sectional view of the A-A position in Fig. 2;

Fig. 5 is a cross-sectional view of the B-B portion in Fig. 2;

FIG6 is a partial enlarged view of point C in FIG5;

FIG7 is a partial enlarged view of point D in FIG5;

In the figure: fixed bottom plate 10, lifting slide plate 11, telescopic rod base 17, telescopic rod 12, sliding plate 18, storage box 19, storage box feed port 20, storage bin 36, stirring shaft 27, filter screen plate 37, intercommunication bin 57, spraying bin 22, first rotating impeller 33, spraying base 25, first spraying head 35, steering wheel 16, first cylinder 14, first push rod 15, pump 13, slide rail 23, slider 24, sliding plate 18, second cylinder 29, second push rod 30, connecting plate 31, rotating shaft 32, first drive motor 28, first drive motor base 62, drying Drying bin 58, rotating rod 34, second rotating impeller 59, heating plate 61, drying nozzle 26, drying bin air inlet 60, linkage bin 39, air inlet 38, first spring 40, linkage block 43, linkage block silo 44, silo discharge port 46, spraying telescopic rod base 45, spraying telescopic rod 47, material pipeline 48, connecting pipeline 49, second spraying head 52, mesh base 50, second drive motor 51, rotating connecting rod 53, spraying port 54, silo feed port 55, intercommunication bin control valve 56, second spring 63, jet bin 21, jet port 41, control valve 42.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

In conjunction with Figures 1-7, a CNC intelligent exterior paint spraying equipment includes a fixed bottom plate 10, a lifting slide plate 11, a lifting slide plate 11 is slidably arranged above the fixed bottom plate 10, a telescopic rod base 17 is arranged at the four corners of the lifting slide plate 11, a telescopic rod 12 is arranged in the telescopic rod base 17, and a retractable telescopic rod 12 is arranged at one end of the bottom of the telescopic rod 12. A sliding plate 18 is slidably arranged above the lifting slide plate 11, and a storage box 19 is fixedly arranged on the sliding plate 18. A storage box feed port 20 inclined inwardly is arranged on one side of the upper end surface of the storage box 19, and a storage box feed port 20 is arranged below the storage box feed port 20. A storage bin 36 is arranged in the storage box 19, and a stirring shaft 27 is rotatably arranged in the storage bin 36. One end of the stirring shaft 27 is arranged at the bottom of the storage bin 36, and the other end of the stirring shaft 27 is connected to a filter screen plate 37. An intercommunication bin 57 is arranged in the storage box 19 on one side of the filter screen plate 37, and a spray bin 22 is arranged on one side of the intercommunication bin 57 on the outer end surface of the storage box 19. A first rotating impeller 33 is rotatably arranged in the spray bin 22, and a spray base 25 is arranged on one side of the first rotating impeller 33 on the end surface of the spray bin 22, and a plurality of first spray heads 35 are evenly arranged on the spray base 25 along a straight line direction.

Furthermore, steering wheels 16 are provided at the four corners of the bottom of the fixed base plate 10, a first cylinder 14 is fixedly provided on the upper end surface of the fixed base plate 10 above the steering wheel 16, a first push rod 15 is slidably provided at the output end of the first cylinder 14, the other end of the first push rod 15 is connected to the bottom of the lifting slide plate 11, and a pump 13 is provided on one side of the bottom of the fixed base plate 10.

Furthermore, slide rails 23 are provided on both sides of the upper end surface of the lifting slide 11, and a slider 24 is slidably provided on the slide rails 23. A sliding plate 18 is connected to the top of the slider 24. A second cylinder 29 is fixedly provided on one side of the sliding plate 18 above the lifting slide 11. A second push rod 30 is slidably provided at the output end of the second cylinder 29. A connecting plate 31 is connected to the other end of the second push rod 30, and one end of the connecting plate 31 is fixedly provided at the bottom of the sliding plate 18.

Furthermore, the stirring shaft 27 is rotatably set on the rotating shaft 32, one end of the rotating shaft 32 extends out of the side wall of the storage bin 36, and a first drive motor 28 is set on the end of the rotating shaft 32 extending out of the side wall of the storage bin 36. The output end of the first drive motor 28 is connected and set on the end face of the rotating shaft 32, and the first drive motor 28 is fixedly set on the first drive motor base 62.

Furthermore, drying chambers 58 are arranged on both sides of the first rotating impeller 33 in the spraying chamber 22, the first rotating impeller 33 is rotatably arranged on the rotating rod 34, both ends of the rotating rod 34 are rotatably arranged in the drying chamber 58, the rotating rod 34 is arranged in the drying chamber 58 and one end is rotatably arranged with a second rotating impeller 59, a heating plate 61 is arranged in the drying chamber 58 on one side of the second rotating impeller 59 close to the first spray head 35, a drying nozzle 26 is arranged on the other side of the heating plate 61 on the end face of the drying chamber 58, and a drying chamber air inlet 60 is arranged on the bottom side wall of the drying chamber 58 on one side of the drying nozzle 26.

Furthermore, linkage bins 39 are provided on both sides of the storage bin 36 in the storage box 19, an air inlet 38 is provided at the bottom of the linkage bin 39, a first spring 40 is connected to the bottom of the linkage bin 39 on one side of the air inlet 38, a linkage block 43 is connected to the other end of the first spring 40, the linkage block 43 is slidably arranged in the linkage bin 39, a linkage block bin 44 is arranged in the linkage block 43, a bin discharge port 46 is provided at one end of the linkage block bin 44 away from the first spring 40, and a spraying telescopic A rod base 45, a spraying telescopic rod 47 is slidably arranged in the spraying telescopic rod base 45, a material pipeline 48 is arranged in the spraying telescopic rod 47, the material pipeline 48 is interconnected with the material bin discharge port 46, a connecting pipe 49 is interconnected on the end surface of the spraying telescopic rod 47, and a second spraying head 52 is interconnected at the other end of the connecting pipe 49, and a mesh base 50 is arranged at the connection between the second spraying head 52 and the connecting pipe 49, and a second spring 63 is connected to the other end of the spraying telescopic rod 47, and the other end of the second spring 63 is connected to the bottom of the spraying telescopic rod base 45.

Furthermore, a second driving motor 51 is fixedly installed at one end of the mesh base 50 inside the second spray head 52, a rotating connecting rod 53 is connected to the output end of the second driving motor 51, and the other end of the rotating connecting rod 53 is connected to the top of the second spray head 52. A plurality of spray ports 54 are arranged on the outer surface of the second spray head 52.

Furthermore, a silo feed port 55 is provided on the side of the linkage block silo 44 close to the intercommunication silo 57, and an intercommunication silo control valve 56 is provided on the side wall of the intercommunication silo 57 close to the linkage block silo 44. When the linkage block silo 44 slides to one side, it can be connected and communicated with the intercommunication silo control valve 56.

Furthermore, jet chambers 21 are provided on both sides of the material storage bin 36 , jet ports 41 are provided on the same side of the jet chamber 21 and the first spray head 35 , and a control valve 42 is provided at the connection between the jet chamber 21 and the material storage bin 36 .

Working principle: The operator pours the spray material into the storage bin 36 through the storage box feed port 20 set above the storage box 19. At this time, the first drive motor 28 set on one side of the storage bin 36 is started, and the output end of the first drive motor 28 drives the rotating shaft 32 to rotate, thereby driving the stirring shaft 27 set on the rotating shaft 32 to rotate, so as to stir the spray raw materials entering the storage bin 36, so as to prevent the spray raw materials from solidifying after being stationary for a long time. At the same time, the stirring shaft 27 will also push the spray raw materials through the filter screen 37 into the intercommunication bin 57, thereby completing the material preparation work.

At this time, the first cylinder 14 arranged on the upper end surface of the fixed base plate 10 is started, and the output end of the first cylinder 14 pushes the first push rod 15 to move up and down, thereby pushing the lifting slide 11 arranged on the top of the first push rod 15 to move up and down, thereby pushing the sliding plate 18 arranged above the lifting slide 11 to move up and down, thereby pushing the storage box 19 arranged on the sliding plate 18 to move up and down, thereby moving the spraying bin 22 on one side of the storage box 19 to the height required for spraying. During the up and down movement of the lifting slide 11, the telescopic rod 12 will also be telescoped accordingly, thereby achieving the effect of stabilizing and preventing the spraying bin 22 from shaking.

At this time, the second cylinder 29 arranged on the lifting slide 11 is started, and the output end of the second cylinder 29 pushes the second push rod 30 to move forward, thereby pushing the connecting plate 31 arranged at one end of the second push rod 30 to move forward, thereby pushing the sliding plate 18 arranged above the connecting plate 31 to move forward, thereby pushing the storage box 19 arranged on the upper end surface of the sliding plate 18 to move forward, thereby pushing the spraying bin 22 arranged at the front end of the storage box 19 to move forward, thereby pushing the spraying base 25 arranged at one end of the spraying bin 22 to gradually approach the surface to be painted.

At this time, the air inlet 38 arranged at the bottom of the storage box 19 starts to take in air, and then discharges the gas into the linkage bin 39. At this time, the control valve 42 arranged on one side of the linkage bin 39 opens the valve, thereby introducing the gas into the jet bin 21, and then the jet port 41 arranged on the end face of the jet bin 21 hits the surface to be painted, thereby removing the surface dust and ensuring the effect of painting.

When the surface is dusted, the spray base 25 arranged at one end of the spray chamber 22 will start, and then the spray material in the intercommunication chamber 57 will be sprayed outward through the first spray head 35 on one side, so as to perform paint spraying on the surface of the object. During the painting process of the spray base 25, since there is liquid flow at the connection between the intercommunication chamber 57 and the spray chamber 22, it will drive the first rotating impeller 33 arranged in the spray chamber 22 to rotate, thereby driving the rotating rod 34 arranged in the first rotating impeller 33 to rotate, thereby driving the second rotating impeller 59 arranged at both ends of the rotating rod 34 to rotate in the drying chamber 58. At this time, the heating plate 61 arranged on one side of the drying chamber 58 will start, thereby generating a certain temperature, and the rotation of the second rotating impeller 59 will drive the gas in the drying chamber 58 to be introduced from the drying chamber air inlet 60 on one side and then discharged to the outside through the drying nozzle 26 on the end face, thereby discharging the hot air generated inside to the outside. At this time, the spray base 25 is also spraying. This design can speed up the drying of the paint sprayed onto the surface of the object, thereby avoiding the occurrence of wall hanging and the like, and also enables the equipment to cope with large-scale spraying.

When it is necessary to spray at a corner, the control valve 42 arranged on the side wall of the linkage bin 39 will be closed, so that all the gas is infused into the linkage bin 39, thereby pushing the linkage block 43 arranged at one end of the linkage bin 39 to move forward, thereby pushing the silo feed port 55 arranged on one side of the linkage block 43 to move forward, until the silo feed port 55 is connected to the intercommunication bin control valve 56 on one side of the intercommunication bin 57. At this time, the intercommunication bin control valve 56 will open the valve, so that the spraying material in the intercommunication bin control valve 56 enters The spray material enters the linkage block silo 44, and then the spray material entering the linkage block silo 44 enters the spray telescopic rod base 45 through the silo discharge port 46, thereby pushing the spray telescopic rod 47 arranged in the spray telescopic rod base 45 to move forward, thereby pushing the connecting pipe 49 arranged at one end of the spray telescopic rod 47 to move forward, thereby pushing the second spray head 52 arranged at one end of the connecting pipe 49 to move forward, thereby pushing the second spray head 52 to move to the outer end face of the spray bin 22, so that the second spray head 52 can enter the corner.

When the second spray head 52 is extending outward, the spray material will also enter the connecting pipe 49 through the material pipe 48, and then enter the second spray head 52 through the mesh base 50. When the second spray head 52 is fully extended, the second spray head 52 will spray the material to the outside through the spray port 54 arranged on the outside. At the same time, the second drive motor 51 arranged in the second spray head 52 will also be started. The output end of the second drive motor 51 drives the rotating connecting rod 53 to rotate, thereby driving the second spray head 52 arranged at one end of the rotating connecting rod 53 to rotate, thereby driving the spray port 54 arranged on the second spray head 52 to rotate, so that the jet angle can be adjusted, so that the spraying dead angle is greatly reduced, and the purpose of uniform spraying is effectively achieved.

When the spraying contact is made, the air inlet 38 will stop supplying air, so that the linkage block 43 will be pulled back to its original position by the linkage bin 39, and the intercommunication bin control valve 56 will be closed. At this time, the spray telescopic rod 47 will also return to its original position under the action of the second spring 63 set at the bottom, so that the second spray head 52 will also return to its original position.

The above descriptions are merely embodiments of the present invention, and are not intended to limit the patent protection scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (4)

1. The utility model provides a numerical control intelligent external paint surface spraying equipment, includes mounting plate (10), lifting slide (11), its characterized in that, mounting plate (10) top slides and is provided with lifting slide (11), lifting slide (11) four corners department is provided with telescopic link base (17), be provided with telescopic link (12) in telescopic link base (17), telescopic link (12) bottom one end is connected in mounting plate (10) up end, lifting slide (11) top slides and is provided with sliding plate (18), fixedly on sliding plate (18) be provided with storage box (19), storage box (19) up end one side is provided with inside storage box feed inlet (20) of slope, storage box feed inlet (20) below is provided with storage bin (36) in storage box (19), storage bin (36) internal rotation is provided with (27), (27) one end sets up in storage bin (36) bottom, the connection of (27) other end is provided with filter screen (37), filter screen (37) one side is provided with intercommunication storage box (57) in storage box (19), one side (57) is provided with intercommunication storage box (57), the spraying bin (22) is rotationally provided with a first rotating impeller (33), one side of the first rotating impeller (33) is provided with a spraying base (25) on the end face of the spraying bin (22), and a plurality of first spraying heads (35) are uniformly arranged on the spraying base (25) along the linear direction;

The stirring shaft (27) is rotatably arranged on the rotating shaft (32), one end of the rotating shaft (32) extends out of the side wall of the storage bin (36), a first driving motor (28) is arranged at one end of the rotating shaft (32) extending out of the side wall of the storage bin (36), the output end of the first driving motor (28) is connected and arranged on the end face of the rotating shaft (32), and the first driving motor (28) is fixedly arranged on the first driving motor base (62);

The utility model discloses a material spraying device, which is characterized in that a linkage bin (39) is arranged on two sides of a storage bin (36) in a storage bin (19), an air inlet (38) is arranged at the bottom of the linkage bin (39), a first spring (40) is arranged at one side of the air inlet (38) and connected with the bottom of the linkage bin (39), a linkage block (43) is arranged at the other end of the first spring (40), the linkage block (43) is slidingly arranged in the linkage bin (39), a linkage block bin (44) is arranged in the linkage block (43), one end of the linkage block bin (44) far away from the first spring (40) is provided with a bin discharge opening (46), a material spraying telescopic rod base (45) is arranged on the outer side of the bin discharge opening (46) on the end face of the linkage block bin (44), a material spraying telescopic rod (47) is arranged in a sliding manner, a material spraying telescopic rod (48) is arranged in the linkage block (47), the linkage block (46) is connected with a material discharge opening (46), a material spraying pipe (47) is connected with a material pipe (49) and is connected with a second end face (49) and is connected with a material spraying head (52), the other end of the spraying telescopic rod (47) is connected with a second spring (63), and the other end of the second spring (63) is connected to the bottom of the spraying telescopic rod base (45);

The mesh base (50) is fixedly provided with a second driving motor (51) at one end in a second spraying head (52), the output end of the second driving motor (51) is connected with a rotating connecting rod (53), the other end of the rotating connecting rod (53) is connected with the top of the second spraying head (52), and a plurality of spraying openings (54) are formed in the outer surface of the second spraying head (52);

a feed inlet (55) of the storage bin (44) is arranged on one side, close to the communicating bin (57), of the linkage block storage bin (44), an communicating bin control valve (56) is arranged on the side wall, close to the linkage block storage bin (44), of the linkage block storage bin (44), and the linkage block storage bin (44) can be connected and communicated with the communicating bin control valve (56) when sliding to one side;

the air injection device is characterized in that air injection bins (21) are arranged on two sides of the storage bin (36), air injection ports (41) are arranged on the same side of the air injection bins (21) and the first material injection head (35), and control valves (42) are arranged at the joints of the air injection bins (21) and the storage bin (36).

2. The numerical control intelligent external paint spraying equipment according to claim 1, wherein steering wheels (16) are arranged at four corners of the bottom of the fixed bottom plate (10), a first air cylinder (14) is fixedly arranged above the steering wheels (16) on the upper end face of the fixed bottom plate (10), a first push rod (15) is slidably arranged at the output end of the first air cylinder (14), the other end of the first push rod (15) is connected to the bottom of the lifting slide plate (11), and a pump (13) is arranged on one side of the bottom of the fixed bottom plate (10).

3. The numerical control intelligent external paint spraying equipment according to claim 2, wherein sliding rails (23) are arranged on two sides of the upper end face of the lifting sliding plate (11), sliding blocks (24) are arranged on the sliding rails (23) in a sliding mode, sliding plates (18) are arranged above the sliding blocks (24) in a connecting mode, second air cylinders (29) are fixedly arranged on one sides of the sliding plates (18) above the lifting sliding plate (11), second push rods (30) are arranged at the output ends of the second air cylinders (29) in a sliding mode, connecting plates (31) are arranged at the other ends of the second push rods (30) in a connecting mode, and one ends of the connecting plates (31) are fixedly arranged at the bottoms of the sliding plates (18).

4. The numerical control intelligent external paint spraying device according to claim 1, wherein a drying bin (58) is arranged on two sides of the first rotating impeller (33) in the spraying bin (22), the first rotating impeller (33) is rotatably arranged on the rotating rod (34), two ends of the rotating rod (34) are rotatably arranged in the drying bin (58), one end of the rotating rod (34) is rotatably provided with a second rotating impeller (59) in the drying bin (58), one side, close to the first material spraying head (35), of the second rotating impeller (59) is provided with a heating plate (61) in the drying bin (58), the other side of the heating plate (61) is provided with a drying nozzle (26) on the end face of the drying bin (58), and one side of the drying nozzle (26) is provided with a drying bin air inlet (60) on the side wall at the bottom of the drying bin (58).