Paint spraying equipment and spraying method thereof

Abstract

The invention relates to the technical field of paint spraying, in particular to paint spraying equipment and a spraying method.The paint spraying equipment comprises a spraying regulation and control assembly arranged in a spraying box, and the spraying regulation and control assembly comprises light curtain sensors fixedly installed at the positions, close to the upper end and the lower end, of the rear end in the spraying box; a spraying cross rod located in front of the upper light curtain sensor is fixedly mounted on the inner wall of the spraying box, the telescopic ends of the two electric push rods penetrate through the interior of the spraying cross rod and are fixedly connected with sealing adjusting plugs, and a spraying head is slidably mounted in a spraying assembly hole. Rapid response can be achieved through the telescopic linkage control mode of the light curtain sensor and the electric push rod, even if base materials of different sizes are continuously processed on a production line, spraying parameters can be rapidly adjusted, the production efficiency is kept, the sensor can recognize and measure the base materials of different shapes and sizes, and the production efficiency is improved. The spraying equipment can correspondingly adjust the spraying parameters, and is suitable for the spraying requirements of various base materials.

Description

Technical Field

[0001] The present invention relates to the technical field of paint spraying, in particular to a paint spraying device and a spraying method thereof. Background Art

[0002] Paint spraying equipment is a kind of equipment that uses mechanical devices and pneumatic or electric systems to evenly spray liquid paint onto the surface of parts. It mainly consists of spray guns, compressed air equipment, paint supply systems, and control systems.

[0003] When the paint spraying equipment is working, the paint is first stored in a special storage tank, the particles are extracted by a pump, and sprayed onto the surface of the object to be painted through a nozzle; finally, the paint particles are evenly distributed on the surface of the object to be painted to form the desired coating.

[0004] In the existing technical solutions, the operator manually measures the size of the substrate and manually adjusts the parameters of the spraying equipment according to the measurement results; however, this manual measurement and adjustment method takes a lot of time, especially when processing a large number of substrates or when frequent parameter adjustments are required. In addition, during the manual measurement and adjustment process, the production line may need to be suspended to wait for the operator to complete the relevant operations; this will cause production interruptions, affect the continuity and stability of the production line, and further reduce production efficiency. Summary of the invention

[0005] The object of the present invention is to provide a paint spraying equipment and a spraying method thereof, which can achieve rapid response through the telescopic linkage control mode of the light curtain sensor and the electric push rod, and can quickly adjust the spraying parameters to maintain production efficiency even when substrates of different sizes are continuously processed on the production line. The sensor can identify and measure substrates of different shapes and sizes, and the spraying equipment can adjust the spraying parameters accordingly, which is suitable for the spraying needs of various substrates to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a paint spraying device and a spraying method thereof, comprising a spray box and a conveyor belt passing through the bottom of the spray box, a second layer of fabric is fixedly installed on the top of the rear end opening of the spray box, a first layer of fabric is fixedly installed on the top of the front end opening of the spray box, and a water tank is opened at the bottom of the interior of the spray box;

[0007] A spray control component is provided inside the spray box, and the spray control component includes a light curtain sensor fixedly installed at the rear end of the spray box near the upper and lower ends, a spray cross bar located in front of the upper light curtain sensor is fixedly installed on the inner wall of the spray box, the interior of the spray cross bar is a hollow structure, and electric push rods are fixedly installed at the left and right ends of the spray cross bar inside the spray box, the telescopic ends of the two electric push rods both penetrate the interior of the spray cross bar and are fixedly connected with sealing adjustment plugs, the electric push rods are electrically connected to the light curtain sensor, and a spray assembly hole is provided on the bottom end surface of the spray cross bar, and a spray head is slidably installed inside the spray assembly hole.

[0008] Preferably, the bottom end surface of the spray head is a semi-spherical structure, and the bottom end surface of the spray head and the side wall close to the bottom end surface are provided with spray holes, and the number of the spray holes is set to be multiple.

[0009] Preferably, an assembly adjustment groove is symmetrically opened on the side wall of the spray assembly hole, and a spring and an adjustment block are installed inside the assembly adjustment groove. One end of the spring is fixed to the bottom groove wall of the assembly adjustment groove, the top of the spring is fixedly connected to the adjustment block, and the end of the adjustment block away from the assembly adjustment groove is fixedly connected to the side wall of the spray head.

[0010] Preferably, the inside and outside of the spray cross bar are jointly provided with a scraping assembly, and the scraping assembly includes limiting slide grooves opened on both sides of the bottom end surface of the spray cross bar, the internal sliding card of the limiting slide groove is connected with a positioning slider, and the bottom ends of the two adjacent front and rear positioning sliders are jointly fixedly connected with a sliding seat, and a cleaning brush is detachably installed at the middle position of the upper end surface of the sliding seat corresponding to the spray head.

[0011] Preferably, a return spring is fixedly connected at both front and rear ends of the two sliding seats, and a pull rope is fixedly connected at the ends of the two sealing adjustment plugs away from each other, and the end of the pull rope away from the corresponding sealing adjustment plug movably passes through the sliding seat close to it and is fixedly connected to the sliding seat away from it.

[0012] Preferably, a cleaning water shower assembly is commonly provided inside and outside the spray box, and the cleaning water shower assembly includes a water pump fixedly installed on the left side wall of the spray box, and a spray head is fixedly installed inside the spray box at a position corresponding to the water pump, and the spray head is flush with the upper end surface of the conveyor belt, and a water pipe is connected between the spray head and the water pump.

[0013] Preferably, a spray delivery assembly is provided both inside and outside the spray box, and the spray delivery assembly includes a paint storage box fixedly mounted on the top surface of the spray box, and a paint pump fixedly mounted on the top surface of the spray box is provided in front of the paint storage box, and the output end of the paint pump is fixedly connected to a paint delivery pipe, and the paint delivery pipe passes through the top wall of the spray box and extends to the interior of the spray box.

[0014] Preferably, a cleaning and recycling assembly is commonly provided inside and outside the spray box, and the cleaning and recycling assembly includes a recycling telescopic pallet fixedly installed in the middle position of the bottom end of the sliding seat, the upper end surface of the recycling telescopic pallet is an arc-shaped recessed structure, a recycling channel is provided inside the recycling telescopic pallet, and a recycling hole connected to the recycling channel is provided in the middle position of the upper end surface of the recycling telescopic pallet.

[0015] Preferably, a pump body is fixedly installed on the left and right side walls of the spray box, the upper end of the pump body is connected to a recovery box fixed on the side wall of the spray box, the input end of the recovery box is connected to a recovery suction pipe, the end of the recovery suction pipe away from the recovery box passes through the side wall of the spray box and is connected to the recovery channel, the output end of the pump body is fixedly connected to a pump air pipe, the end of the pump air pipe away from the pump body passes through the side wall of the spray box and extends into the water tank.

[0016] Preferably, a spraying method of a paint spraying device comprises the following steps:

[0017] S1. Place the substrate to be sprayed on a conveyor belt, and convey the substrate to be sprayed to the light curtain sensor through the conveyor belt;

[0018] S2, the light curtain sensor detects the width of the substrate to be sprayed through the light projecting element and the light receiving element; in this way, the detected data signal can be transmitted to the electric push rod through the cable;

[0019] S3, the electric push rod pushes the sealing adjustment plug to extend and retract to seal part of the space inside the spraying crossbar, so that the remaining space size inside the spraying crossbar corresponds to the size of the substrate;

[0020] S4, the paint pump can transport the paint to the inside of the spraying crossbar, and the paint can be sprayed out from the spraying hole of the spraying head by pressurizing to spray the substrate;

[0021] S5. When the amount of paint inside the spray crossbar increases and the spraying pressure is high, the spray head can be pushed to move. The moving spray head extends from the spray assembly hole, so that the paint is sprayed out from the spray holes on the side wall of the spray head, increasing the spraying amount and spraying range.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can achieve rapid response through the telescopic linkage control of the light curtain sensor and the electric push rod. Even when substrates of different sizes are continuously processed on the production line, the spraying parameters can be quickly adjusted to maintain production efficiency. The sensor can identify and measure substrates of different shapes and sizes, and the spraying equipment can adjust the spraying parameters accordingly. It is suitable for the spraying needs of various substrates. Moreover, the telescopic linkage control of the light curtain sensor and the electric push rod makes the adjustment in the production process more flexible, and can be adjusted in real time according to actual conditions, thereby improving the flexibility and adaptability of the production line.

[0024] 2. The present invention controls the extension length of the spray head and the opening of the spray hole by adjusting the spray pressure, and can flexibly adapt to different spraying requirements; whether it is thin coating, medium coating or thick coating, it can be adjusted according to needs to meet diverse spraying requirements; this design makes the spraying operation simpler and more efficient; the operator only needs to control the spray pressure to achieve the extension of the spray head and the spraying of paint, without the need for complicated adjustments and operations, thereby reducing the difficulty of operation and labor intensity.

[0025] 3. The stable movement of the sliding seat of the present invention on the bottom end surface of the spray cross bar can scrape and clean the corresponding spray head, spray hole, and spray assembly hole through the cleaning brush. In this way, the spray head, spray hole, and spray assembly hole that do not need to be sprayed can be cleaned during the spray width range adjustment process. The cleaning brush can promptly remove the residual paint on the spray head to prevent the paint from accumulating on the surface of the spray head and causing blockage or uneven spraying; keeping the spray head clean can ensure the smooth flow of paint, reduce the downtime caused by spray head blockage, and thus improve the overall spraying efficiency.

[0026] 4. The retractable recycling tray of the present invention can instantly collect paint stains dropped by the cleaning brush during the cleaning process, thereby avoiding the diffusion and accumulation of paint stains in the working area; at the same time, the design of the retractable recycling tray simplifies the cleaning process, and employees do not need to frequently clean up the dropped paint stains during the cleaning process, and the design of the retractable recycling tray is usually flexible and can be adjusted according to different cleaning needs and spraying operation environments; this adaptability helps to ensure that the paint spraying equipment can maintain an efficient and clean operating state in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is the overall structural view of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the spray box of the present invention;

[0030] Figure 3 This is a schematic diagram of the internal structure of the spray crossbar of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the connection between the spraying control component and the scraping component of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the connection between the spray control component and the cleaning recovery component of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the connection between the spray head and the spray cross bar of the present invention;

[0034] Figure 7 This is a schematic diagram of the structure of the connection between the sealing adjustment plug and the sliding seat of the present invention;

[0035] Figure 8 This is a schematic diagram of the structure of the sliding seat of the present invention;

[0036] Fig. 9 For the present invention Figure 5 Schematic diagram of the local enlarged structure at point A in the middle.

[0037] Description of reference numerals:

[0038] 1. Spraying box; 2. Spraying delivery assembly; 201. Paint storage box; 202. Paint pump; 203. Paint delivery pipe; 3. Cleaning and recycling assembly; 301. Pump body; 302. Recovery box; 303. Recovery suction pipe; 304. Pump air pipe; 305. Recovery telescopic support plate; 306. Recovery hole; 307. Recovery channel; 4. Cleaning water shower assembly; 401. Water pump; 402. Water delivery pipe; 403. Spray head; 5. Spraying control assembly; 501. Light curtain sensor; 502, spray cross bar; 503, electric push rod; 504, sealing adjustment plug; 505, spray assembly hole; 506, spray head; 507, spray hole; 508, assembly adjustment slot; 509, spring; 510, adjustment block; 6, scraper assembly; 601, sliding seat; 602, return spring; 603, pull rope; 604, cleaning brush; 605, positioning slider; 606, limiting slide slot; 7, first cord layer; 8, second cord layer; 9, conveyor belt; 10, water tank. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention provides a technical solution:

[0041] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Fig. 9 A paint spraying device and a paint spraying method thereof include a spray box 1 and a conveyor belt 9 passing through the lower part of the spray box 1, a second cloth layer 8 is fixedly installed on the top of the rear end opening of the spray box 1, a first cloth layer 7 is fixedly installed on the top of the front end opening of the spray box 1, and a water tank 10 is provided at the bottom end of the spray box 1; a spray control component 5 is arranged inside the spray box 1, and the spray control component 5 includes a light curtain sensor 501 fixedly installed at the rear end of the spray box 1 near the upper and lower ends, a spray cross bar 502 located in front of the upper light curtain sensor 501 is fixedly installed on the inner wall of the spray box 1, and the interior of the spray cross bar 502 is a hollow structure, and electric push rods 503 are fixedly installed at the left and right ends of the spray cross bar 502 inside the spray box 1, and the telescopic ends of the two electric push rods 503 both pass through the interior of the spray cross bar 502 and are fixed A sealing adjustment plug 504 is connected, the electric push rod 503 is electrically connected to the light curtain sensor 501, a spray assembly hole 505 is provided on the bottom end surface of the spray cross bar 502, and a spray head 506 is slidably installed inside the spray assembly hole 505; the bottom end surface of the spray head 506 is a semi-spherical structure, and spray holes 507 are provided on the bottom end surface and the side wall close to the bottom end surface of the spray head 506, and the number of spray holes 507 is set in plurality; assembly adjustment grooves 508 are symmetrically provided on the side wall of the spray assembly hole 505, and a spring 509 and an adjustment block 510 are installed inside the assembly adjustment groove 508, one end of the spring 509 is fixed on the bottom end groove wall of the assembly adjustment groove 508, the top end of the spring 509 is fixedly connected to the adjustment block 510, and the end of the adjustment block 510 away from the assembly adjustment groove 508 is fixedly connected to the side wall of the spray head 506.

[0042] A spray delivery assembly 2 is provided both inside and outside the spray box 1. The spray delivery assembly 2 includes a paint storage box 201 fixedly mounted on the top surface of the spray box 1. A paint pump 202 fixedly mounted on the top surface of the spray box 1 is provided in front of the paint storage box 201. The output end of the paint pump 202 is fixedly connected to a paint delivery pipe 203. The paint delivery pipe 203 passes through the top wall of the spray box 1 and extends to the interior of the spray box 1.

[0043] By adopting the above technical solution, when in use, the substrate to be sprayed is placed on the conveyor belt 9. The structure of the conveyor belt 9 itself is a transparent structure. The two sides and the bottom of the first curtain layer 7 and the second curtain layer 8 are in contact with the openings at both ends of the spray box 1, so as not to affect the conveyance of the substrate by the conveyor belt 9. When the conveyor belt 9 conveys the substrate to be sprayed from the opening on the side of the second curtain layer 8 to the light curtain sensor 501, the light curtain sensor 501 includes a light projecting component and a light receiving component. The light projecting component is fixedly installed at the bottom of the spray box 1 below the conveyor belt 9, and the light receiving component is fixedly installed at the top of the spray box 1 above the conveyor belt 9. When the transparent conveyor belt 9 transports the opaque substrate through the light curtain sensor 501, the light curtain sensor 501 can detect The width of the substrate can be determined so that the detected data signal can be transmitted to the electric push rod 503 through the cable. The electric push rod 503 can push the sealing adjustment plug 504 to move telescopically. Through the telescopic movement of the sealing adjustment plug 504, part of the space inside the spray cross bar 502 can be sealed, so that the sprayed paint can be prevented from entering the sealed part of the space. The two sealing adjustment plugs 504 block the internal space of the spray cross bar 502, so that the remaining space size inside the spray cross bar 502 can correspond to the size of the substrate. When spraying, start the paint pump 202, and the paint pump 202 can draw the paint in the paint storage box 201 through the paint delivery pipe 203 and deliver it to the inside of the spray cross bar 502. Through continuous pressurization The paint can be sprayed out from the spray hole 507 of the spray head 506, so that the substrate can be sprayed. In this way, the telescopic linkage control method of the light curtain sensor 501 and the electric push rod 503 can achieve rapid response. Even when substrates of different sizes are continuously processed on the production line, the spray parameters can be quickly adjusted to maintain production efficiency. The sensor can identify and measure substrates of different shapes and sizes, and the spray equipment can adjust the spray parameters accordingly, which is suitable for the spraying needs of various substrates. Moreover, the telescopic linkage control of the light curtain sensor 501 and the electric push rod 503 makes the adjustment in the production process more flexible, and can be adjusted in real time according to actual conditions, thereby improving the flexibility and adaptability of the production line; the automated adjustment reduces the manual operation of the operator, reducing The risk of production accidents caused by human errors is reduced; when the spraying amount and spraying range need to be increased, the spraying pressure of the paint is increased. At this time, the amount of paint inside the spraying crossbar 502 increases and the spraying pressure is large, so that the spray head 506 can be pushed to move inside the spraying assembly hole 505. Under the action of pressure, the spray head 506 can drive the adjustment block 510 to slide in the assembly adjustment groove 508, and at the same time compress the spring 509 in the assembly adjustment groove 508. At this time, the moving spray head 506 extends out from the spraying assembly hole 505, so that the paint can be sprayed out from the spray hole 507 on the side wall of the spray head 506. In this way, the extension length of the spray head 506 and the opening of the spray hole 507 can be controlled by adjusting the spraying pressure, which can flexibly adapt to different spraying requirements;Whether it is thin coating, medium coating or thick coating, it can be adjusted according to the needs to meet the diverse spraying requirements; this design makes the spraying operation simpler and more efficient; the operator only needs to control the spraying pressure to achieve the extension of the spray head 506 and the spraying of the paint, without the need for complex adjustments and operations, thereby reducing the difficulty and labor intensity of the operation. ;

[0044] Specifically, Figure 5-Figure 8 As shown, the inside and outside of the spray cross bar 502 are jointly provided with a scraping assembly 6, and the scraping assembly 6 includes a limiting slide groove 606 opened on both sides of the bottom end surface of the spray cross bar 502, and the internal sliding card of the limiting slide groove 606 is connected with a positioning slider 605, and the bottom ends of the two adjacent positioning sliders 605 are jointly fixedly connected with a sliding seat 601, and the middle position of the upper end surface of the sliding seat 601 corresponding to the spray head 506 is detachably installed with a cleaning brush 604; the front and rear ends of the two sliding seats 601 are fixedly connected with a complex The spring 602 is positioned, and the ends of the two sealing adjustment plugs 504 that are away from each other are fixedly connected with a pull rope 603, and the end of the pull rope 603 that is away from the corresponding sealing adjustment plug 504 can move through the sliding seat 601 close to it and is fixedly connected to the sliding seat 601 away from it; the inside and outside of the spray box 1 are jointly provided with a cleaning recovery component 3, and the cleaning recovery component 3 includes a recovery telescopic support plate 305 fixedly installed in the middle position of the bottom end of the sliding seat 601, and the upper end surface of the recovery telescopic support plate 305 is an arc-shaped concave structure.

[0045] By adopting the above technical solution, when the sealing adjustment plug 504 is moving, the sealing adjustment plug 504 can pull the sliding seat 601 on the corresponding surface to move through the pull rope 603, and the sliding seat 601 can stably slide in the limiting slide groove 606 through the positioning slider 605. When the sliding seats 601 are away from each other, the sliding seat 601 can stretch the return spring 602. When the sliding seats 601 need to be close to each other, the return spring 602 in the stretched state can make the sliding seats 601 close to each other. In this way, the stable movement of the sliding seat 601 on the bottom end surface of the spray cross bar 502 can be used to clean the The cleaning brush 604 scrapes and cleans the corresponding spray head 506, spray hole 507, and spray assembly hole 505. In this way, during the process of adjusting the spray width range, the spray head 506, spray hole 507, and spray assembly hole 505 that do not need to be sprayed can be cleaned. The cleaning brush 604 can promptly remove the residual paint on the spray head 506 to prevent the paint from accumulating on the surface of the spray head 506 and causing blockage or uneven spraying; keeping the spray head 506 clean can ensure the smooth flow of paint, reduce the downtime caused by blockage of the spray head 506, and thus improve the overall spraying efficiency. When the cleaning brush 604 is moving for cleaning, the sliding seat 601 can synchronously drive the recovery telescopic tray 305 to move, so that the recovery telescopic tray 305 can always be located below the cleaning brush 604, so that the paint dirt generated after the cleaning brush 604 cleans can fall onto the recovery telescopic tray 305, and the recovery telescopic tray 305 can instantly collect the paint dirt dropped by the cleaning brush 604 during the cleaning process, thereby avoiding the diffusion and accumulation of paint dirt in the working area; at the same time, the design of the recovery telescopic tray 305 simplifies the cleaning process, and employees do not need to frequently clean up the fallen paint dirt during the cleaning process, and the design of the recovery telescopic tray 305 is usually flexible and can be adjusted according to different cleaning needs and spraying operation environments; this adaptability helps to ensure that the paint spraying equipment can maintain an efficient and clean operating state in various environments.

[0046] Specifically, Figure 1-Figure 6As shown, a recovery channel 307 is provided inside the recovery telescopic support plate 305, and a recovery hole 306 connected to the recovery channel 307 is provided in the middle position of the upper end surface of the recovery telescopic support plate 305; a pump body 301 is fixedly installed on the left and right side walls of the spray box 1, and the upper end of the pump body 301 is connected to a recovery box 302 fixed on the side wall of the spray box 1, and the input end of the recovery box 302 is connected to a recovery suction pipe 303, and the end of the recovery suction pipe 303 away from the recovery box 302 passes through the side wall of the spray box 1 and is connected to the recovery channel 307. The output end of the pump body 301 is fixedly connected with a pump air pipe 304, and one end of the pump air pipe 304 away from the pump body 301 passes through the side wall of the spray box 1 and extends into the water tank 10. The inside and outside of the spray box 1 are jointly provided with a cleaning water shower assembly 4, and the cleaning water shower assembly 4 includes a water pump 401 fixedly installed on the left side wall of the spray box 1, and a spray head 403 is fixedly installed at a position corresponding to the water pump 401 inside the spray box 1. The spray head 403 is flush with the upper end surface of the conveyor belt 9, and a water pipe 402 is connected between the spray head 403 and the water pump 401.

[0047] By adopting the above technical solution, when in use, the pump body 301 is started, and the pump body 301 can work by connecting the recovery suction pipe 303 with the recovery channel 307, so that there is suction in the recovery channel 307, so that the paint dirt dropped on the recovery telescopic support plate 305 can be sucked into the recovery box 302 through the recovery hole 306 on the recovery channel 307, and the paint dirt is stored through the recovery box 302. The recovery box 302 can be opened, and the recovery box 302 has a filter screen, which can filter out the sucked dirt through the filter screen, and the filtered paint gas can pass through The pump body 301 discharges into the pump air pipe 304, so that the paint gas generated in the surrounding during spraying can be transported to the water tank 10 through the pump air pipe 304, so that the VOCs waste gas in the paint, such as alcohols, ethers, ammonia, etc., has a certain solubility in water; therefore, when these waste gases pass through water, they can be absorbed and dissolved by water, thereby achieving a purification effect; at the same time, the gas in the water tank 10 will cause the water in the water tank 10 to roll, so that the bubbling and rolling water can more fully contact with the paint gas in the spray box 1, which is conducive to the dissolution of the gas in the water. Start the water pump 401, and the water pump 401 can extract water from the water tank 10. In this way, the water in the water tank 10 can be transported to the spray head 403 through the water pipe 402. The water can be sprayed on the upper end surface of the moving conveyor belt 9 through the spray head 403, so that the conveyor belt 9 can be cleaned. It should be noted that the spray head 403 only sprays and cleans the part of the end surface of the conveyor belt 9 where the substrate is not placed. When the conveyor belt 9 drives the substrate to the position of the spray head 403, the spray head 403 does not spray water. At the same time, the flush setting of the spray head 403 and the conveyor belt 9 can prevent the spray head 403 from splashing a large amount of water onto the sprayed substrate when the spray head 403 sprays the end surface of the conveyor belt 9 without the substrate. At the same time, when the conveyor belt 9 is cleaned, the water in the water tank 10 can come into contact with the paint odor in the spray box 1, which has a certain adsorption and dissolution effect on the paint odor. In addition, cleaning the conveyor belt 9 can prevent the adhesion of paint from causing misjudgment of the measurement of the light curtain sensor 501.

[0048] Working principle: When in use, the substrate to be sprayed is placed on the conveyor belt 9. The structure of the conveyor belt 9 itself is a transparent structure. The two sides and the bottom of the first curtain layer 7 and the second curtain layer 8 are in contact with the openings at both ends of the spray box 1. The first curtain layer 7 and the second curtain layer 8 are opened according to the size of the substrate to be sprayed to avoid contact between the substrate and the curtain layer during the transmission process. When the conveyor belt 9 transmits the substrate to be sprayed from the opening on the side of the second curtain layer 8 to the light curtain sensor 501, the light curtain sensor 501 includes a light projector and a light receiver. The light projector is fixedly installed at the bottom of the spray box 1 below the conveyor belt 9, and the light receiver is fixedly installed at the top of the spray box 1 above the conveyor belt 9. When the transparent conveyor belt 9 transports the opaque When the substrate of light passes through the light curtain sensor 501, the light curtain sensor 501 can detect the width of the substrate, so that the detected data signal can be transmitted to the electric push rod 503 through the cable. The electric push rod 503 can push the sealing adjustment plug 504 to telescopically move. Through the telescopic movement of the sealing adjustment plug 504, part of the space inside the spray cross bar 502 can be sealed, so that the sprayed paint can be prevented from entering the sealed part of the space. The two sealing adjustment plugs 504 block the internal space of the spray cross bar 502, so that the remaining space size inside the spray cross bar 502 can correspond to the size of the substrate. When spraying, start the paint pump 202, and the paint pump 202 can store the paint through the paint delivery pipe 203 The paint in the box 201 is extracted and transported to the inside of the spray cross bar 502. The paint can be sprayed out from the spray hole 507 of the spray head 506 through continuous pressurization, so that the substrate can be sprayed. When it is necessary to increase the spraying amount and spraying range, the spraying pressure of the paint is increased. At this time, the amount of paint inside the spray cross bar 502 increases and the spraying pressure is large, so that the spray head 506 can be pushed to move inside the spray assembly hole 505. Under the action of pressure, the spray head 506 can drive the adjustment block 510 to slide in the assembly adjustment groove 508, and at the same time compress the spring 509 in the assembly adjustment groove 508. At this time, the moving spray head 506 extends out from the spray assembly hole 505, so that the paint can be sprayed from the spray hole 507 on the side wall of the spray head 506. When the sealing regulating plug 504 moves, the sealing regulating plug 504 can pull the sliding seat 601 on the corresponding surface to move through the pull rope 603, and the sliding seat 601 can stably slide in the limiting slide groove 606 through the positioning slider 605. When the sliding seats 601 are away from each other, the sliding seat 601 can stretch the return spring 602. When the sliding seats 601 need to be close to each other, the return spring 602 in the stretched state can make the sliding seats 601 close to each other. In this way, through the stable movement of the sliding seat 601 on the bottom end surface of the spraying cross bar 502, the corresponding spray head 506, the spraying hole 507, and the spraying assembly hole 505 can be scraped and cleaned by the cleaning brush 604. When the cleaning brush 604 moves for cleaning,The sliding seat 601 can synchronously drive the recovery telescopic support plate 305 to move, so that the recovery telescopic support plate 305 can always be located below the cleaning brush 604, so that the paint dirt generated after cleaning by the cleaning brush 604 can fall onto the recovery telescopic support plate 305.

[0049] When in use, the pump body 301 is started, and the pump body 301 can work by connecting the recovery suction pipe 303 with the recovery channel 307, so that there is suction in the recovery channel 307, so that the paint dirt dropped on the retractable support plate 305 can be sucked into the recovery box 302 through the recovery hole 306 on the recovery channel 307, and the paint dirt is stored through the recovery box 302. The recovery box 302 can be opened, and the recovery box 302 has a filter screen, through which the sucked dirt can be filtered out, and the filtered paint gas can pass through the pump body 301 It is discharged into the pump air pipe 304, so that the paint gas generated in the surrounding during spraying can be transported to the water tank 10 through the pump air pipe 304. In this way, the VOCs waste gas in the paint, such as alcohols, ethers, ammonia, etc., has a certain solubility in water. Therefore, when these waste gases pass through water, they can be absorbed and dissolved by water, thereby achieving a purification effect; at the same time, the gas in the water tank 10 will cause the water in the water tank 10 to roll, so that the bubbling and rolling water can more fully contact with the paint gas in the spray box 1, which is beneficial to the dissolution of the gas in the water. Start the water pump 401, and the water pump 401 can extract water from the water tank 10. In this way, the water in the water tank 10 can be transported to the spray head 403 through the water pipe 402. The water can be sprayed on the upper end surface of the moving conveyor belt 9 through the spray head 403, so that the conveyor belt 9 can be cleaned. It should be noted that the spray head 403 only sprays and cleans the part of the end surface of the conveyor belt 9 where the substrate is not placed. When the conveyor belt 9 drives the substrate to the position of the spray head 403, the spray head 403 does not spray water. At the same time, the flush setting of the spray head 403 and the conveyor belt 9 can prevent the spray head 403 from splashing a large amount of water onto the sprayed substrate when the spray head 403 sprays the end surface of the conveyor belt 9 without the substrate. At the same time, when the conveyor belt 9 is cleaned, the water in the water tank 10 can come into contact with the paint odor in the spray box 1, which has a certain adsorption and dissolution effect on the paint odor. In addition, cleaning the conveyor belt 9 can prevent the adhesion of paint from causing misjudgment of the measurement of the light curtain sensor 501.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A paint spraying device, comprising a spray box (1) and a conveyor belt (9) passing through the lower part of the spray box (1), characterized in that: A second fabric layer (8) is fixedly installed on the top of the rear opening of the spray box (1), a first fabric layer (7) is fixedly installed on the top of the front opening of the spray box (1), and a water tank (10) is provided at the inner bottom of the spray box (1); A spray control assembly (5) is arranged inside the spray box (1), and the spray control assembly (5) comprises a light curtain sensor (501) fixedly mounted at the rear end of the spray box (1) near the upper and lower ends; a spray cross bar (502) located in front of the upper light curtain sensor (501) is fixedly mounted on the inner wall of the spray box (1); the interior of the spray cross bar (502) is a hollow structure; electric push rods (503) are fixedly mounted at the left and right ends of the spray cross bar (502) inside the spray box (1); the telescopic ends of the two electric push rods (503) both penetrate the interior of the spray cross bar (502) and are fixedly connected with sealing adjustment plugs (504); the electric push rods (503) are electrically connected to the light curtain sensor (501); a spray assembly hole (505) is provided on the bottom end surface of the spray cross bar (502); a spray head (506) is slidably mounted inside the spray assembly hole (505).

2. A paint spraying device according to claim 1, characterized in that: The bottom end surface of the spray head (506) is a semi-spherical structure. The bottom end surface of the spray head (506) and the side wall close to the bottom end surface are both provided with spray holes (507), and the number of the spray holes (507) is set to be multiple.

3. A paint spraying device according to claim 2, characterized in that: The side wall of the spray assembly hole (505) is symmetrically provided with an assembly adjustment groove (508), and a spring (509) and an adjustment block (510) are installed inside the assembly adjustment groove (508). One end of the spring (509) is fixed to the bottom groove wall of the assembly adjustment groove (508), and the top end of the spring (509) is fixedly connected to the adjustment block (510). The end of the adjustment block (510) away from the assembly adjustment groove (508) is fixedly connected to the side wall of the spray head (506).

4. A paint spraying device according to claim 3, characterized in that: The inside and outside of the spray cross bar (502) are jointly provided with a scraping assembly (6), and the scraping assembly (6) includes limiting slide grooves (606) opened on both sides of the bottom end surface of the spray cross bar (502), and the internal sliding clamp of the limiting slide groove (606) is connected with a positioning slider (605), and the bottom ends of the two adjacent positioning sliders (605) are jointly fixedly connected with a sliding seat (601), and a cleaning brush (604) is detachably installed at the middle position of the upper end surface of the sliding seat (601) corresponding to the spray head (506).

5. A paint spraying device according to claim 4, characterized in that: A return spring (602) is fixedly connected to both front and rear ends of the two sliding seats (601), and a pull rope (603) is fixedly connected to the ends of the two sealing adjustment plugs (504) that are away from each other, and the end of the pull rope (603) away from the corresponding sealing adjustment plug (504) movably passes through the sliding seat (601) close to it and is fixedly connected to the sliding seat (601) away from it.

6. A paint spraying device according to claim 5, characterized in that: A cleaning water shower assembly (4) is commonly provided inside and outside the spray box (1), and the cleaning water shower assembly (4) comprises a water pump (401) fixedly mounted on the left side wall of the spray box (1); a spray head (403) is fixedly mounted inside the spray box (1) at a position corresponding to the water pump (401); the spray head (403) is flush with the upper end surface of the conveyor belt (9); and a water pipe (402) is connected between the spray head (403) and the water pump (401).

7. A paint spraying device according to claim 6, characterized in that: A spray delivery assembly (2) is provided inside and outside the spray box (1), and the spray delivery assembly (2) comprises a paint storage box (201) fixedly mounted on the top surface of the spray box (1). A paint pump (202) fixedly mounted on the top surface of the spray box (1) is provided in front of the paint storage box (201), and the output end of the paint pump (202) is fixedly connected to a paint delivery pipe (203), and the paint delivery pipe (203) passes through the top wall of the spray box (1) and extends into the interior of the spray box (1).

8. A paint spraying device according to claim 5, characterized in that: The inside and outside of the spray box (1) are jointly provided with a cleaning recovery component (3), and the cleaning recovery component (3) includes a recovery telescopic support plate (305) fixedly installed in the middle position of the bottom end of the sliding seat (601), the upper end surface of the recovery telescopic support plate (305) is an arc-shaped concave structure, and a recovery channel (307) is opened inside the recovery telescopic support plate (305), and a recovery hole (306) connected to the recovery channel (307) is opened in the middle position of the upper end surface of the recovery telescopic support plate (305).

9. A paint spraying device according to claim 8, characterized in that: A pump body (301) is fixedly mounted on both left and right side walls of the spray box (1); the upper end of the pump body (301) is connected to a recovery box (302) fixed to the side wall of the spray box (1); the input end of the recovery box (302) is connected to a recovery suction pipe (303); the end of the recovery suction pipe (303) away from the recovery box (302) passes through the side wall of the spray box (1) and is connected to the recovery channel (307); the output end of the pump body (301) is fixedly connected to a pump air pipe (304); the end of the pump air pipe (304) away from the pump body (301) passes through the side wall of the spray box (1) and extends into the water tank (10).

10. A spraying method for a paint spraying device, the method being applicable to the paint spraying device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the substrate to be sprayed on a conveyor belt (9), and conveying the substrate to be sprayed to a light curtain sensor (501) via the conveyor belt (9); S2, the light curtain sensor (501) detects the width of the substrate to be sprayed through the light projecting element and the light receiving element; thus, the detected data signal can be transmitted to the electric push rod (503) through the cable; S3, the electric push rod (503) pushes the sealing adjustment plug (504) to extend and retract to seal part of the space inside the spraying cross bar (502), so that the size of the remaining space inside the spraying cross bar (502) corresponds to the size of the substrate; S4, the paint pump (202) can transport the paint to the inside of the spraying crossbar (502), and the paint can be sprayed out from the spraying hole (507) of the spraying head (506) by applying pressure, so as to spray the substrate; S5. When the amount of paint inside the spraying crossbar (502) increases and the spraying pressure is high, the spraying head (506) can be pushed to move, and the movable spraying head (506) extends from the spraying assembly hole (505), so that the paint is sprayed from the spraying hole (507) on the side wall of the spraying head (506), increasing the spraying amount and the spraying range.

Images