Full-automatic spraying device with scraping function

Abstract

The invention relates to the field of spraying devices, and discloses a full-automatic spraying device with a scraping function, the full-automatic spraying device comprises a mechanical arm and a connecting piece mounted at the tail end of the mechanical arm, a mounting plate is fixedly arranged at the end, away from the mechanical arm, of the connecting piece, and a cavity is formed in the mounting plate; the mounting plate is used for mounting the air curtain assembly and the material scraping assembly, the air curtain assembly is used for guiding the sprayed coating to move in the preset direction and increasing or decreasing the moving speed of the coating by changing the air speed, and the material scraping assembly is used for scraping the coating, discharging bubbles in the coating and collecting redundant coating. The full-automatic spraying device with the material scraping function is provided with the air curtain assembly, spraying can be more uniform, the position of an air curtain is adjusted to meet different requirements, the air curtain can provide convenience for collection of paint, the flowing speed of the paint can be controlled by changing the flowing speed of the air curtain, and therefore the thickness can be controlled.

Description

Technical Field

[0001] The invention relates to the technical field of spraying devices, in particular to a fully automatic spraying device with a scraping function. Background Art

[0002] In the patent application with announcement number CN220826119U, it includes a tube mold positioning mechanism for supporting and fixing the tube mold and driving it to rotate around the axis, a gluing mechanism, and a moving mechanism provided on one side of the tube mold positioning mechanism for driving the gluing mechanism and the tube mold to undergo relative displacement. The gluing mechanism includes a feed barrel, a delivery pump connected to the feed barrel, a gluing arc plate, and a telescopic cylinder that drives the gluing arc plate to move back and forth. A glue tank box is provided on the top of the gluing arc plate to provide glue for the gluing arc plate. The glue tank box is connected to the delivery pump. The gluing mechanism is mounted on a frame, and the frame is mounted on the moving mechanism. The advantages are: the device uses a gluing arc plate for gluing, and the gluing arc plate fits the tube mold. On the one hand, the contact area is large, which can improve the gluing efficiency. On the other hand, the glue is directly applied to the tube mold from the gluing arc plate, which will not cause excessive glue spraying or local excessive glue accumulation, and also reduces glue waste.

[0003] In the existing technologies including the above-mentioned patents, firstly, the specifications of the pipes that can be processed by the device are relatively single and cannot adapt to pipes of different specifications. Although the coating is carried out by contacting the curved plate with the mold at a faster speed, the coating effect is difficult to control as the use time increases, and the device cannot recover the excess paint in time. Moreover, the above-mentioned equipment requires manual assistance, and does not take into account the scraping process after the pouring, and does not ensure the continuity of the two processes, which will have a certain impact on the pouring. Summary of the Invention

[0004] The problem to be solved by the present invention is that the effect of the coating is difficult to control, and it is inconvenient to collect the excess coating in time, and the scraping process is not taken into consideration.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a fully automatic spraying device with a scraping function, comprising a robotic arm and a connecting piece installed at the end of the robotic arm, a mounting plate is fixedly provided at the end of the connecting piece away from the robotic arm, a cavity is opened inside the mounting plate, and the mounting plate is used to install an air curtain assembly and a scraper assembly, the air curtain assembly is used to guide the sprayed paint to move in a preset direction and to speed up or slow down the movement of the paint by changing the wind speed, and the scraper assembly is used to scrape the paint flat, discharge bubbles in the paint and collect excess paint.

[0006] Preferably, the air curtain assembly includes a main air supply pipe. One end of the main air supply pipe away from the connecting piece is connected to an external air pump. The air pump connected to the main air supply pipe is a non-pulsating air pump. A four-way pipe is fixedly arranged in the middle section of the main air supply pipe. The other end of the main air supply pipe is fixedly connected to a material spraying pipe. The four-way pipe is located between the robotic arm and the material spraying pipe. The material spraying pipe is fixedly connected to the mounting plate.

[0007] Preferably, the lower end of the four-way pipe passes through the mounting plate and is fixedly connected thereto. The lengths of the lower ends of the four-way pipe are different. The short port is used to inflate the inside of the mounting plate, and the long port is used to connect the auxiliary air supply pipe. The other end of the auxiliary air supply pipe is fixedly connected to a cylinder body. A piston rod is slidably arranged inside the cylinder body. There are two piston rods symmetrically arranged along the center line of the cylinder body. An electromagnetic valve is also arranged inside the four-way pipe.

[0008] Preferably, a first spring is fixedly arranged on the opposite sides of the piston rods. Both ends of the auxiliary air supply pipe are located outside the piston heads of the piston rods. Three-way electromagnetic valves are arranged at the two connection points between the auxiliary air supply pipe and the cylinder body. The lower ends of the three-way electromagnetic valves are in communication with the inside of the mounting plate. The air pressure between the piston rods is less than the air pressure between the piston rods and the cylinder body, but both are higher than the air pressure outside the mounting plate. The first spring can push the two piston rods to both sides and make the distance between the piston rods consistent on the premise that the pressure difference on both sides is not large.

[0009] Preferably, a wind shield is fixedly arranged at one end of the piston rod located outside the cylinder body. The wind shields are located on both sides of the mounting plate. The wind shields are used to guide the wind direction and control the wind speed. Both ends of the wind shields are located inside the mounting plate. Limit rods are slidably arranged at both ends of the wind shields.

[0010] Preferably, both ends of the limit rods are fixedly connected to the mounting plate. Springs II are arranged around the limit rods. Both ends of the springs II are fixedly connected to the mounting plate and the wind shield respectively. An air outlet is arranged on the inner side of the wind shield through the mounting plate. The air outlet is in communication with the cavity inside the mounting plate.

[0011] Preferably, the scraping component includes mounting parts. There are two mounting parts in total. The upper ends of the mounting parts are fixedly connected to the mounting plate. The mounting parts are composed of a spring and a telescopic rod. A bracket is fixedly arranged at the lower end of the mounting parts. The length of the bracket is the same as that of the wind shield. The bracket is located below the wind shield.

[0012] Preferably, two mounting discs are fixedly arranged on the inner surface of the lower end of the bracket. A through hole is opened in the lower half of one of the mounting discs. A suction pipe is arranged outside the mounting disc with the through hole. The suction pipe is fixedly connected to the bracket.

[0013] Preferably, a limiting frame is fixedly arranged on the opposite side of the mounting disc. An aggregate plate is arranged at the center of the limiting frame. The aggregate plate is U-shaped. Both ends of the aggregate plate are fixedly connected to the mounting disc. One side of the aggregate plate close to the material suction pipe is lower than the other side.

[0014] Preferably, a belt is arranged on the outer surface of the limiting frame. The belt is in the shape of a "hoof". The belt covers the outside of the limiting frame. The belt at the opening of the limiting frame enters the inside of the limiting frame and is slidably connected to the outer surface of the aggregate plate.

[0015] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) Through the setting of the air curtain assembly, firstly, the paint can be sprayed more evenly by the air flow. Secondly, the position of the air curtain can be changed by adjusting the distance between the windshields, so that different spraying angles can be adapted, and when encountering different rotation directions, speeds or other coating materials, the device can meet different processing requirements. And by adjusting the distance between the windshields, the air flow velocity can be increased without increasing the air flow rate, which can further improve the adaptability of the device, so as to better meet the processing requirements in different situations. Finally, the air curtain blown by the air curtain assembly can make the sprayed paint move concentratedly to the lowest end of the pipe, which is convenient for centralized collection of the paint, so as to facilitate secondary utilization. And in this process, changing the flow velocity of the air curtain can also control the flow velocity of the paint, so as to improve the convenience of thickness control to a certain extent; (2) Through the setting of the scraping component, firstly, the air bubbles in the paint can be pressed out, and the pipe and the paint can be compacted more tightly. And the excess paint can also be taken away and collected by the aggregate plate, which can further reduce the waste of paint. And under the action of the air curtain, the paint dripping from the belt can also be blown onto the pipe, so as to further avoid the waste of paint and avoid the pollution caused by the random dripping of paint. Description of the Drawings

[0016] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention; Figure 2 It is a schematic overall installation structure diagram of the mounting plate, the air curtain assembly and the scraping component of the present invention; Figure 3 It is a schematic cross-sectional structure diagram of the mounting plate of the present invention; Figure 4 It is a schematic internal structure diagram of the cylinder body of the present invention; Figure 5 It is a schematic cross-sectional structure diagram of the bracket in the scraping component of the present invention; Figure 6 It is a schematic diagram of the belt and its installation structure of the present invention; Figure 7 Schematic diagram of the aggregate plate structure of the present invention; Figure 8 Schematic bottom view of the mounting plate of the present invention; Figure 9 Schematic diagram of the gas flow direction of the air supply pipe of the present invention (right windshield retracted and left windshield extended).

[0017] In the figure: 1. Robot arm; 2. Connector; 3. Mounting plate; 4. Air curtain assembly; 401. Main air supply pipe; 402. Four-way pipe; 403. Material spraying pipe; 404. Cylinder body; 405. Piston rod; 406. First spring; 407. Auxiliary air supply pipe; 4071. Three-way solenoid valve; 408. Windshield; 409. Limit rod; 410. Second spring; 411. Air outlet; 5. Scraping component; 501. Mounting part; 502. Bracket; 503. Mounting disc; 504. Suction pipe; 505. Limit frame; 506. Aggregate plate; 507. Belt. Detailed implementation manners

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The terms "including" or "comprising" and the like used in the present disclosure mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0020] As Figures 1 to 9As shown in the figure, the present invention provides a fully automatic spraying device with a scraping function, which includes a robotic arm 1 and a connecting piece 2 installed at the end of the robotic arm 1. One end of the connecting piece 2 away from the robotic arm 1 is fixedly provided with a mounting plate 3. A cavity is formed inside the mounting plate 3. The mounting plate 3 is used to install an air curtain assembly 4 and a scraping assembly 5. The air curtain assembly 4 is used to guide the sprayed paint to move in a preset direction and accelerate or slow down the moving speed of the paint by changing the wind speed. The scraping assembly 5 is used to scrape the paint flat, discharge the air bubbles in the paint and collect the excess paint.

[0021] The air curtain assembly 4 includes a main air supply pipe 401. One end of the main air supply pipe 401 away from the connecting piece 2 is connected to an external air pump. The air pump connected to the main air supply pipe 401 is a non-pulsating air pump. A four-way pipe 402 is fixedly provided in the middle section of the main air supply pipe 401. The other end of the main air supply pipe 401 is fixedly connected to a paint spraying pipe 403. The four-way pipe 402 is located between the robotic arm 1 and the paint spraying pipe 403. The paint spraying pipe 403 is fixedly connected to the mounting plate 3.

[0022] The lower end of the four-way pipe 402 passes through and is fixedly connected to the mounting plate 3. The lengths of the lower ends of the four-way pipe 402 are different. The short port is used to inflate the mounting plate 3, and the long port is used to connect an auxiliary air supply pipe 407. The other end of the auxiliary air supply pipe 407 is fixedly connected to a cylinder body 404. A piston rod 405 is slidably arranged inside the cylinder body 404. There are two piston rods 405 symmetrically arranged along the center line of the cylinder body 404. An electromagnetic valve is also arranged inside the four-way pipe 402.

[0023] On the opposite sides of the piston rod 405, a first spring 406 is fixedly provided. Both ends of the auxiliary air supply pipe 407 are located outside the piston head of the piston rod 405. Three-way electromagnetic valves 4071 are arranged at both connections between the auxiliary air supply pipe 407 and the cylinder body 404. The lower ends of the three-way electromagnetic valves 4071 are in communication with the inside of the mounting plate 3. The air pressure between the piston rods 405 is less than the air pressure between the piston rod 405 and the cylinder body 404, but both are higher than the air pressure outside the mounting plate 3. The first spring 406 can push the two piston rods 405 to both sides and make the distance between the piston rods 405 consistent on the premise that the pressure difference on both sides is not large.

[0024] One end of the piston rod 405 located outside the cylinder body 404 is fixedly provided with a wind baffle 408. The wind baffle 408 is located on both sides of the mounting plate 3. The wind baffle 408 is used to guide the wind direction and control the wind speed. Both ends of the wind baffle 408 are located inside the mounting plate 3. Limiting rods 409 are slidably arranged at both ends of the wind baffle 408.

[0025] Both ends of the limiting rod 409 are fixedly connected to the mounting plate 3. A second spring 410 is arranged around the limiting rod 409. Two ends of the second spring 410 are respectively fixedly connected to the mounting plate 3 and the wind deflector 408. An air outlet 411 is formed on the inner side of the wind deflector 408 through the mounting plate 3, and the air outlet 411 communicates with the cavity inside the mounting plate 3.

[0026] The scraping component 5 includes mounting members 501. There are two mounting members 501 in total. The upper ends of the mounting members 501 are fixedly connected to the mounting plate 3. Each mounting member 501 consists of a spring and a telescopic rod. A bracket 502 is fixedly arranged at the lower end of the mounting member 501. The length of the bracket 502 is the same as that of the wind deflector 408, and the bracket 502 is located below the wind deflector 408.

[0027] Two mounting discs 503 are fixedly arranged on the inner surface of the lower end of the bracket 502. A through hole is formed in the lower half of one of the mounting discs 503. A suction pipe 504 is arranged outside the mounting disc 503 with the through hole, and the suction pipe 504 is fixedly connected to the bracket 502.

[0028] A limiting frame 505 is fixedly arranged on the opposite side of the mounting disc 503. An aggregate plate 506 is arranged at the center of the limiting frame 505. The aggregate plate 506 is U-shaped. Two ends of the aggregate plate 506 are both fixedly connected to the mounting disc 503. One side of the aggregate plate 506 close to the suction pipe 504 is lower than the other side.

[0029] A belt 507 is arranged on the outer surface of the limiting frame 505. The belt 507 is in the shape of a "hoof". The belt 507 covers the outside of the limiting frame 505. The belt 507 at the opening of the limiting frame 505 enters the inside of the limiting frame 505 and is slidably connected to the outer surface of the aggregate plate 506.

[0030] The working principle and usage process of the present invention: An external air pump supplies air to the air supply pipe. The gas flows into the coating pipe 403, the mounting plate 3 and the air supply sub-pipe 407 respectively. The non-pulsating air flowing into the coating pipe 403 makes the coating spray out evenly; the air flowing into the inside of the mounting plate 3 finally discharges from the air outlet 411; the air flowing into the air supply sub-pipe 407 finally enters the cylinder block 404, and the air in the air supply sub-pipe 407 is controlled by the three-way solenoid valve 4071. The above process is regulated by the solenoid valve in the four-way pipe 402; During the spraying operation, the coating pipe 403 sprays the coating onto the pipe. When the spraying area moves to the wind deflector 408, the air sprayed out from the air outlet 411 blows the incompletely dried coating in the spraying area to the set direction. To adapt to different materials, the movement of the two wind deflectors 408 can be controlled by the three-way solenoid valve 4071, and the distance between the wind deflectors 408 can be changed to adjust the flow rate and the position of the air curtain. Specifically, it is divided into two situations: It is necessary to move the two wind deflectors 408 the same distance for reference Figure 9When the time is right, the right three-way solenoid valve 4071 opens, and gas enters the cylinder block 404 to push the piston rod 405 to move leftward. At the same time, the left three-way solenoid valve 4071 is opened, but it directs the air downward and discharges it into the mounting plate 3. At this time, the gas on the left side in the cylinder block 404 is less than that on the right side, and the pressure change on both sides is not significant. The two windshield plates 408 move slowly to the left synchronously and by the same distance. When it is necessary to adjust the position of a certain side of the windshield plate 408 alone, the corresponding three-way solenoid valve 4071 can be controlled. If it is necessary to retract the left windshield plate 408, the left three-way solenoid valve 4071 is opened alone. As the air pressure on the left side slowly rises, the first spring 406 gradually contracts towards the middle, driving the left windshield plate 408 to retract. If it is necessary to extend the left windshield plate 408, the left three-way solenoid valve 4071 is also opened alone. However, at this time, it is necessary to discharge the gas on the left side in the cylinder block 404. As the pressure on the left side continues to decrease and is lower than the middle air pressure, the first spring 406 and the middle air pressure jointly push the left piston rod 405 outward. During this process, the air pressure on the right side remains unchanged. When scraping the material, the installation part 501 can press the belt 507 against the pipe. At this time, the belt 507 rotates with the pipe, taking away the excess paint on the pipe and pressing out the internal air bubbles. When the paint moves to the aggregate plate 506, it is scraped off and collected by the aggregate plate 506, and under the action of the aggregate plate 506, it moves towards the suction pipe 504 and is finally sucked away by the suction pipe 504, realizing the secondary utilization of the paint.

[0031] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. An automatic spraying device with a scraping function, comprising a robotic arm (1) and a connecting piece (2) installed at the end of the robotic arm (1), characterized in that: One end of the connecting piece (2) far from the robotic arm (1) is fixedly provided with a mounting plate (3). A cavity is formed inside the mounting plate (3). The mounting plate (3) is used for mounting an air curtain assembly (4) and a scraping assembly (5). The air curtain assembly (4) is used for guiding the sprayed paint to move in a preset direction and accelerating or decelerating the moving speed of the paint by changing the wind speed. The scraping assembly (5) is used for leveling the paint, discharging the air bubbles in the paint, and collecting the excess paint.

2. The fully automatic spraying device with a scraping function according to claim 1, wherein: The air curtain assembly (4) includes a main air supply pipe (401). One end of the main air supply pipe (401) far from the connecting piece (2) is connected to an external air pump. The air pump connected to the main air supply pipe (401) is a non-pulsating air pump. A four-way pipe (402) is fixedly arranged in the middle section of the main air supply pipe (401). The other end of the main air supply pipe (401) is fixedly connected to a paint spraying pipe (403). The four-way pipe (402) is located between the robotic arm (1) and the paint spraying pipe (403). The paint spraying pipe (403) is fixedly connected to the mounting plate (3).

3. The fully automatic spraying device with a scraping function according to claim 2, wherein: The lower end of the four-way pipe (402) passes through the mounting plate (3) and is fixedly connected thereto. The lengths of the lower ends of the four-way pipe (402) are different. The short port is used for inflating the mounting plate (3), and the long port is used for connecting an auxiliary air supply pipe (407). The other end of the auxiliary air supply pipe (407) is fixedly connected to a cylinder body (404). A piston rod (405) is slidably arranged inside the cylinder body (404). There are two piston rods (405) symmetrically arranged along the center line of the cylinder body (404). An electromagnetic valve is also arranged inside the four-way pipe (402).

4. The fully automatic spraying device with a scraping function according to claim 3, characterized in that: A first spring (406) is fixedly arranged on the opposite sides of the piston rod (405). Both ends of the auxiliary air supply pipe (407) are located outside the piston head of the piston rod (405). Three-way electromagnetic valves (4071) are arranged at the two connection points between the auxiliary air supply pipe (407) and the cylinder body (404). The lower ends of the three-way electromagnetic valves (4071) are communicated with the inside of the mounting plate (3). The air pressure between the piston rods (405) is less than the air pressure between the piston rod (405) and the cylinder body (404), but both are higher than the air pressure outside the mounting plate (3). The first spring (406) can push the two piston rods (405) to both sides and make the distance between the piston rods (405) consistent on the premise that the pressure difference on both sides is not large.

5. The fully automatic spraying device with a scraping function according to claim 4, wherein: One end of the piston rod (405) located outside the cylinder body (404) is fixedly provided with a wind shield (408). The wind shields (408) are located on both sides of the mounting plate (3). The wind shields (408) are used for guiding the wind direction and controlling the wind speed. Both ends of the wind shields (408) are located inside the mounting plate (3). Limit rods (409) are slidably arranged at both ends of the wind shields (408).

6. The fully automatic spraying device with a scraping function according to claim 5, characterized in that: Both ends of the limiting rod (409) are fixedly connected to the mounting plate (3). A second spring (410) is arranged around the limiting rod (409). Both ends of the second spring (410) are fixedly connected to the mounting plate (3) and the wind deflector (408) respectively. An air outlet (411) is formed in the inner side of the wind deflector (408) through the mounting plate (3), and the air outlet (411) is communicated with the cavity in the mounting plate (3).

7. The fully automatic spraying device with a scraping function according to claim 1, characterized in that: The scraping component (5) includes mounting members (501). There are two mounting members (501) in total. The upper ends of the mounting members (501) are fixedly connected to the mounting plate (3). The mounting member (501) is composed of a spring and a telescopic rod. A bracket (502) is fixedly arranged at the lower end of the mounting member (501). The length of the bracket (502) is the same as that of the wind deflector (408), and the bracket (502) is located below the wind deflector (408).

8. The fully automatic spraying device with a scraping function according to claim 7, characterized in that: Two mounting discs (503) are fixedly arranged on the inner surface of the lower end of the bracket (502). A through hole is formed in the lower half of one of the mounting discs (503). A suction pipe (504) is arranged outside the mounting disc (503) with the through hole, and the suction pipe (504) is fixedly connected to the bracket (502).

9. The fully automatic spraying device with a scraping function according to claim 8, wherein: A limiting frame (505) is fixedly arranged on the opposite side of the mounting disc (503). An aggregate plate (506) is arranged at the center of the limiting frame (505). The aggregate plate (506) is U-shaped. Both ends of the aggregate plate (506) are fixedly connected to the mounting disc (503). One side of the aggregate plate (506) close to the suction pipe (504) is lower than the other side.

10. The fully automatic spraying device with scraping function according to claim 9, characterized in that: A belt (507) is arranged on the outer surface of the limiting frame (505). The belt (507) is in the shape of a "hoof". The belt (507) covers the outside of the limiting frame (505). The belt (507) at the opening of the limiting frame (505) enters the inside of the limiting frame (505) and is slidably connected to the outer surface of the aggregate plate (506).

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