Automatic spraying device and spraying method thereof

Abstract

The invention discloses an automatic spraying device and a spraying method thereof, and belongs to the technical field of part spraying, the automatic spraying device comprises a spraying box and a supporting seat, the supporting seat is fixedly connected to the inner bottom wall of the spraying box, an air suction groove communicated with the interior of the spraying box is formed in the supporting seat, and a coating pipe and an air outlet pipe are connected to the inner bottom wall of the spraying box in a penetrating mode; according to the paint spraying device, the connecting pump, the air outlet frame, the air suction groove and the filter box are adopted, paint sprayed by the spraying head is effectively prevented from being mixed with dust and sundries in air at other positions in the spraying box, so that the purity of the paint is improved, in addition, an air wall flowing downwards plays a role in guiding and isolating airflow carried by the paint sprayed by the spraying head, and the paint spraying device is more convenient to use. According to the spraying device, the occurrence probability of vortex and airflow turbulence is remarkably reduced, the adverse effect of airflow on flowing of mist coating is avoided through the design, it is ensured that the coating can smoothly and accurately act on the surface of a part, and therefore the spraying quality and consistency are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of parts spraying, and in particular relates to an automatic spraying device and a spraying method thereof. Background Art

[0002] Referring to the Chinese invention patent, publication number: CN113731675B, a spraying device is disclosed, belonging to the field of spraying technology. The spraying device includes a first spraying component, a second spraying component and a connecting component; the first spraying component is rotatably connected to the first end of the connecting component; the second spraying component is rotatably connected to the second end of the connecting component, and the rotation axes of the second spraying component and the first spraying component are located in the same plane, and the rotation axes of the second spraying component and the first spraying component are not colinear. The disclosure states that the spraying device can automatically spray glue on multiple bolts; However, there are still some problems in actual use: 1. During the spraying process, due to the high-pressure paint sprayed by the spray gun, air flow fluctuations are easily formed inside the spray box. When these air flows interact with parts or corners, eddy currents or air flow turbulence are easily generated. This air flow instability will cause uneven contact between the sprayed paint and the parts to be sprayed, thus affecting the spraying quality; 2. After the parts are placed, they need to be transferred to the designated spraying position. During the placement and transfer processes, vibrations may occur or the parts may shift due to inertia, which will cause the final position of the parts to not accurately correspond to the spraying position, and will also have an adverse effect on the accuracy of the spraying; Based on this, the present invention designs an automatic spraying device and a spraying method thereof to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to propose an automatic spraying device and a spraying method thereof in order to solve the problem that the instability of airflow will cause uneven contact between the sprayed paint and the parts to be sprayed, thereby affecting the spraying quality; at the same time, the vibration and displacement of the parts that may occur during the placement process will also have an adverse effect on the accuracy of the spraying.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic spraying device comprises a spray box and a support seat, the support seat is fixedly connected to the inner bottom wall of the spray box, an air suction groove connected to the inside of the spray box is opened in the support seat, a paint pipe and an air outlet pipe are connected through the inner bottom wall of the spray box, the bottom end of the air outlet pipe is connected to an air outlet frame, a spray head connected to the paint pipe is fixedly connected below the air outlet frame, one end of the air outlet pipe located outside the spray box is connected to a connecting pump arranged on the spray box, the connecting pump is connected to a filter box fixedly connected to the spray box through a pipeline, the back of the filter box is connected to an intermediate pipe, the other end of the intermediate pipe passes through the spray box The box is connected with the suction groove in the support seat, the support seat is provided with a placement seat, four connecting holes are opened outside the placement seat, two grooves are opened on the front and rear sides of the placement seat, an extrusion adjustment mechanism is provided in the groove, a mobile extrusion mechanism is provided in the connecting hole, the extrusion adjustment mechanism and the mobile extrusion mechanism are connected through a hose, a sliding hole is provided in the top wall of the connecting hole, a guide groove is provided in the inner wall of the sliding hole, a sliding pushing mechanism arranged in the mobile extrusion mechanism is slidably connected in the guide groove and the sliding hole, and a buffer contact mechanism connected with the sliding pushing mechanism is provided under the placement seat.

[0005] As a further description of the above technical solution: two supporting rails are fixedly connected to the inner wall of the spray box, an electric slider is provided in the supporting rail, an electric hydraulic rod is fixedly connected to the side of the electric slider close to the support seat, and a clamping plate is fixedly connected to the other end of the electric hydraulic rod, and the clamping plate is arranged in the groove, and an anti-slip pad is fixedly connected to the placement seat.

[0006] As a further description of the above technical solution: the left and right sides of the spray box are hinged with a pick-up and drop-off door, the front of the spray box is penetrated by an observation window, the bottom of the spray box is fixedly connected with a support leg, and the inner bottom wall of the spray box is fixedly connected with two pads.

[0007] As a further description of the above technical solution: the extrusion adjustment mechanism includes an air storage frame fixedly connected in the groove, a first piston plate is slidably connected in the air storage frame, a first connecting rod is fixedly connected to the side of the first piston plate, the other end of the first connecting rod is fixedly connected to a first contact plate, the first contact plate is arranged outside the clamping plate, the first connecting rod outer sleeve is provided with a first elastic component fixedly connected to the first piston plate and the inner wall of the air storage frame, and the air storage frame is connected to a hose.

[0008] As a further description of the above technical solution: the mobile extrusion mechanism includes an air cylinder fixedly connected in a connecting hole, the air cylinder is connected to a hose, a second piston plate is slidably connected in the air cylinder, a second connecting rod is fixedly connected to the side of the second piston plate, an end of the second connecting rod located outside the air cylinder is fixedly connected to a mobile plate, a second connecting rod outer sleeve is provided with a second elastic component fixedly connected to the second piston plate and the inner wall of the air cylinder, a mobile frame is fixedly connected to the side of the mobile plate, an extrusion hole is opened in the mobile frame, and the sliding pushing mechanism is slidably connected in the extrusion hole.

[0009] As a further description of the above technical solution: the sliding pushing mechanism includes a slide plate and a contact rod slidably connected in the extrusion hole, the slide plate is slidably connected in the sliding hole, a sliding groove is provided on the slide plate, a sliding block is slidably connected in the sliding groove, a push plate is fixedly connected to the sliding block, and a guide column slidably connected in the guide groove is fixedly connected to the side of the sliding block.

[0010] As a further description of the above technical solution: an air outlet is provided on the side of the push plate, a connecting pipe connected to the air outlet is penetrated under the sliding block, the connecting pipe is penetrated in the placement seat and connected to the buffer contact mechanism, the guide groove is set to an inclined shape, the guide column is set to a cylindrical shape, and the cross-sectional shape of the sliding block is set to a cross shape.

[0011] As a further description of the above technical solution: the buffer contact mechanism includes a cylinder fixedly connected to the placement seat, the side of the cylinder is connected to a one-way exhaust pipeline connected to the connecting pipe, the side of the cylinder is connected to an air intake valve, a circular plate is slidably connected inside the cylinder, and a vertical rod is fixedly connected under the circular plate.

[0012] As a further description of the above technical solution: the vertical rod passes through and is slidably connected under the cylinder, the bottom end of the vertical rod is fixedly connected to a buffer plate, the outer sleeve of the vertical rod is provided with a third elastic component fixedly connected to the circular plate and the inner wall of the cylinder, and the air intake valve and the one-way exhaust pipeline are both connected to the air storage cavity in the cylinder located on the upper side of the circular plate.

[0013] A spraying method of an automatic spraying device, the spraying method comprising the following steps: The parts to be sprayed are placed on the placement seat on the pad through the pick-and-place door, and then the electric slider slides in the support rail, and the electric hydraulic rod is controlled to drive the clamping plate to clamp the placement seat, and the electric slider drives the placement seat to move to the left onto the support seat, and then the electric hydraulic rod is controlled to shorten, at this time the clamping plate is separated from the placement seat, and the placement seat moves down, first the buffer plate contacts the support seat, the buffer plate and the circular plate are squeezed and moved upward, the third elastic component is stretched, and at the same time, the lowering process of the placement seat and the parts is buffered to reduce the vibration, and at the same time the gas in the upper gas storage chamber in the cylinder is squeezed; After the clamping plate is separated from the placement seat, the first contact plate loses its extrusion, and at the same time, the first elastic component controls the first piston plate to move away from the part, and the gas in the gas storage frame is squeezed and transferred to the gas storage cylinder through the hose. The air pressure in the gas storage cylinder increases to control the movement of the second piston plate. At this time, the second piston plate, the second connecting rod and the moving frame move. While the moving frame moves, the contact rod is driven upward through the extrusion hole. At the same time, the contact rod controls the slide plate, the sliding block and the push plate to move upward. Since the guide column and the sliding block are limited by the inclined guide groove, the push plate moves close to the part while moving upward. The four push plates that move simultaneously push the part to the middle position of the placement seat. At the same time, the gas in the cylinder is blown onto the part to be sprayed through the one-way exhaust pipe, the connecting pipe and the air outlet head, so as to realize the blowing and cleaning of the part surface. After the contact rod moves to the uppermost position, the extrusion hole drives the contact rod to move downward. At this time, the push plate is reset and moves into the sliding hole, and then controls the connection pump to work; At this time, the spray head sprays paint to act on the surface of the part, and the connecting pump sucks the gas and sprays it downward through the air outlet pipe and the air outlet frame. The sprayed gas forms a square air wall that covers the surrounding of the placement seat. The air wall prevents impurities in the gas outside the placement seat from mixing with the sprayed paint, and at the same time carries the misted paint flying in the air downward into the air intake groove. The formation of the air wall can prevent the gas flow in the spray box from affecting the flow of the sprayed misted paint, and the paint can act smoothly on the surface of the part. At the same time, the connecting pump sucks the gas through the filter box, the intermediate pipe and the air intake groove, which is convenient for sucking and cleaning the gas and scattered paint. When the spraying is completed, the connecting pump is controlled to stop working and the parts can be taken out.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, a connecting pump, an air outlet frame, an air suction groove, and a filter box are used. The connecting pump blows the gas into the spray box through the air outlet frame. The connecting pump, the air outlet frame, the air suction groove, the filter box and other components form an optimized air flow circulation system. The connecting pump blows the clean gas into the spray box through the air outlet frame. At the same time, the connecting pump cooperates with the filter box, the intermediate tube and the air suction groove to effectively suck and filter the gas, thereby ensuring the cleanliness of the spraying environment. The specially designed rectangular air storage frame cooperates with the air suction groove to form a closed rectangular air wall around the placement seat. This The air wall forms a protective area around the spray head, which effectively prevents the paint sprayed from the spray head from mixing with dust and debris in the air at other locations in the spray box, thereby improving the purity of the paint. In addition, the downward-flowing air wall guides and isolates the airflow carried by the paint sprayed from the spray head, significantly reducing the occurrence of vortices and airflow turbulence. This design avoids the adverse effects of airflow on the flow of mist paint, ensuring that the paint can act smoothly and accurately on the surface of the part, thereby greatly improving the quality and consistency of spraying.

[0015] 2. In the present invention, a buffer plate, a cylinder, a third elastic component, a one-way exhaust pipeline, an air inlet valve and an air outlet head are used. When the placement seat and the parts move to the upper side of the support seat and start to be lowered, the design of the buffer plate allows it to move when squeezed, thereby activating the third elastic component. The stretching action of this elastic component effectively buffers the downward movement of the placement seat, significantly reduces the possibility of vibration, and ensures the stability of the parts during the placement process. At the same time, the gas in the cylinder is squeezed during the lowering of the parts, and is directly sprayed on the surface of the parts through the precise guidance of the one-way exhaust pipeline, the connecting pipe and the air outlet head. This operation not only effectively removes debris that may adhere to the surface of the parts and improves the cleanliness of the parts, but also provides additional buffering and shock absorption effects for the lowering process of the parts. The buffering and cleaning system of the automatic spraying device not only improves the stability of part placement and the accuracy of spraying, but also ensures high-quality cleaning of the part surface, thereby greatly improving the efficiency of the overall spraying operation and the quality of the finished product.

[0016] 3. In the present invention, a clamping plate, a first contact plate, an air storage frame, an air storage cylinder, a second piston plate, an extrusion frame, a contact rod, a slide plate, a sliding block, a guide column, a guide groove and a push plate are used. In the process of lowering the part and the placement seat to the support seat, the separation of the clamping plate and the first contact plate triggers the movement of the first piston plate, thereby squeezing the gas in the air storage frame into the air storage cylinder. As the air pressure in the air storage cylinder increases, the synchronous movement of the second piston plate and the extrusion frame is controlled. The extrusion frame drives the contact rod to move upward through the extrusion hole. At the same time, the rising action of the contact rod is transmitted to the slide plate, the sliding block and the push plate in sequence. Thanks to the precise limiting of the guide column and the sliding block in the inclined guide groove, the push plate can smoothly approach and push the part while moving upward. The four synchronously moving push plates work together to accurately push the part to the middle position of the placement seat, ensuring that the part is automatically aligned with the precise position of the spray head. This innovative design enables the spraying process to be carried out accurately, which not only improves the degree of automation of the spraying operation, but also significantly improves the accuracy and efficiency of the spraying, thereby ensuring the high quality and consistency of the sprayed finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural schematic diagram of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 3 This is a bottom-up stereoscopic cross-sectional structural schematic diagram of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a support guide rail of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 5 A schematic diagram of the three-dimensional structure of a placement seat of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a placement seat of an automatic spraying device and a spraying method thereof proposed by the present invention; Figure 7 The invention provides an automatic spraying device and a spraying method thereof. Figure 6 The enlarged structural diagram of part A in the middle; Figure 8 A schematic diagram of a three-dimensional cross-sectional structure of an extrusion adjustment mechanism of an automatic spraying device and a spraying method thereof proposed by the present invention; Fig. 9 A schematic diagram of a three-dimensional cross-sectional structure of a mobile extrusion mechanism of an automatic spraying device and a spraying method thereof proposed by the present invention; Fig.10 A schematic diagram of the three-dimensional structure of a sliding push mechanism of an automatic spraying device and a spraying method thereof proposed by the present invention; Fig.11 A schematic diagram of a three-dimensional cross-sectional structure of a placement seat of an automatic spraying device and a spraying method thereof proposed by the present invention when viewed from above; Fig.12 The present invention provides a schematic diagram of a three-dimensional cross-sectional structure of a buffer contact mechanism of an automatic spraying device and a spraying method thereof.

[0018] Legend: 1. Spray box; 2. Observation window; 3. Pick-up door; 4. Support seat; 5. Air suction groove; 6. Spray head; 7. Air outlet frame; 8. Paint pipe; 9. Air outlet pipe; 10. Connecting pump; 11. Filter box; 12. Intermediate pipe; 13. Support guide rail; 14. Electric slider; 15. Electric hydraulic rod; 16. Clamp; 17. Placement seat; 18. Anti-skid pad; 19. Connecting hole; 20. Groove; 21. Extrusion adjustment mechanism; 211. Air storage frame; 212. First piston plate; 213. First connecting rod; 214. First elastic component; 215. First contact plate; 22. Mobile extrusion mechanism; 221. Air storage cylinder; 222 , the second piston plate; 223, the second connecting rod; 224, the second elastic component; 225, the moving plate; 226, the moving frame; 227, the extrusion hole; 23, the sliding hole; 24, the guide groove; 25, the sliding push mechanism; 251, the slide plate; 252, the contact rod; 253, the sliding groove; 254, the sliding block; 255, the push plate; 256, the air outlet head; 257, the guide column; 258, the connecting pipe; 26, the buffer contact mechanism; 261, the cylinder; 262, the one-way exhaust pipeline; 263, the intake valve; 264, the round plate; 265, the vertical rod; 266, the third elastic component; 267, the buffer plate; 27, the pad. DETAILED DESCRIPTION

[0019] 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.

[0020] Please see attached Figure 1 -Attached Fig.12 The present invention provides a technical solution: an automatic spraying device, comprising a spray box 1 and a support seat 4, the support seat 4 is fixedly connected to the inner bottom wall of the spray box 1, an air suction groove 5 connected to the inside of the spray box 1 is opened in the support seat 4, a paint pipe 8 and an air outlet pipe 9 are connected through the inner bottom wall of the spray box 1, the bottom end of the air outlet pipe 9 is connected to an air outlet frame 7, a spray head 6 connected to the paint pipe 8 is fixedly connected under the air outlet frame 7, one end of the air outlet pipe 9 located outside the spray box 1 is connected to a connecting pump 10 arranged on the spray box 1, the connecting pump 10 is connected to a filter box 11 fixedly connected to the spray box 1 through a pipeline, the back of the filter box 11 is connected to an intermediate pipe 12, and the other end of the intermediate pipe 12 passes through the spray box 1 and is communicated with the suction groove 5 in the support seat 4, a placement seat 17 is provided on the support seat 4, four connecting holes 19 are opened outside the placement seat 17, two grooves 20 are opened on the front and rear sides of the placement seat 17, an extrusion adjustment mechanism 21 is provided in the groove 20, a mobile extrusion mechanism 22 is provided in the connecting hole 19, the extrusion adjustment mechanism 21 and the mobile extrusion mechanism 22 are communicated through a hose, a sliding hole 23 is opened on the top wall of the connecting hole 19, a guide groove 24 is opened on the inner wall of the sliding hole 23, a sliding pushing mechanism 25 arranged in the mobile extrusion mechanism 22 is slidably connected in the guide groove 24 and the sliding hole 23, and a buffer contact mechanism 26 connected with the sliding pushing mechanism 25 is provided under the placement seat 17.

[0021] The connecting pump 10 sucks the gas and sprays it downward through the outlet pipe 9 and the outlet frame 7. The sprayed gas forms a square air wall that covers the placement seat 17. The air wall prevents impurities in the gas outside the placement seat 17 from mixing with the sprayed paint. At the same time, the mist-like paint flying in the air is carried downward into the suction groove 5, thereby realizing the suction and filtration of the gas in the spray box 1.

[0022] Specifically, Figure 2 and Figure 4 As shown, two supporting rails 13 are fixedly connected to the inner wall of the spray box 1, and an electric slider 14 is provided in the supporting rail 13. The electric slider 14 is fixedly connected to an electric hydraulic rod 15 on one side close to the supporting seat 4, and the other end of the electric hydraulic rod 15 is fixedly connected to a clamping plate 16. The clamping plate 16 is arranged in a groove 20, and an anti-slip pad 18 is fixedly connected to the placement seat 17.

[0023] The electric slider 14 slides in the support rail 13 to control the placement seat 17 and the parts to move in the left and right directions. The electric hydraulic rod 15 and the clamping plate 16 cooperate to clamp and adjust the placement seat 17.

[0024] Specifically, Figure 1-3 As shown, the left and right sides of the spray box 1 are hinged with a pick-up and drop-out door 3, the front of the spray box 1 is penetrated and clamped with an observation window 2, the bottom of the spray box 1 is fixedly connected with a support leg, and the inner bottom wall of the spray box 1 is fixedly connected with two pads 27.

[0025] Specifically, Figure 6 and Figure 8 As shown, the extrusion adjustment mechanism 21 includes an air storage frame 211 fixedly connected in the groove 20, a first piston plate 212 is slidably connected in the air storage frame 211, a first connecting rod 213 is fixedly connected to the side of the first piston plate 212, the other end of the first connecting rod 213 is fixedly connected to a first contact plate 215, the first contact plate 215 is arranged outside the clamping plate 16, the first connecting rod 213 is outer-mounted with a first elastic component 214 fixedly connected to the first piston plate 212 and the inner wall of the air storage frame 211, and the air storage frame 211 is connected to the hose.

[0026] After the clamping plate 16 is separated from the placement seat 17, the first contact plate 215 loses its extrusion, and at the same time the first elastic component 214 controls the first piston plate 212 to move away from the part, and the gas in the gas storage frame 211 is squeezed and transferred to the gas storage cylinder 221 through the hose to adjust the air pressure change in the gas storage cylinder 221.

[0027] Specifically, Figure 7 and Fig. 9 As shown, the mobile extrusion mechanism 22 includes an air cylinder 221 fixedly connected in the connecting hole 19, the air cylinder 221 is connected to the hose, a second piston plate 222 is slidably connected in the air cylinder 221, a second connecting rod 223 is fixedly connected to the side of the second piston plate 222, an end of the second connecting rod 223 located outside the air cylinder 221 is fixedly connected to a mobile plate 225, the second connecting rod 223 is outerly provided with a second elastic component 224 fixedly connected to the second piston plate 222 and the inner wall of the air cylinder 221, a mobile frame 226 is fixedly connected to the side of the mobile plate 225, an extrusion hole 227 is opened in the mobile frame 226, and the sliding pushing mechanism 25 is slidably connected in the extrusion hole 227.

[0028] When the air pressure in the air cylinder 221 does not increase, the second elastic component 224 keeps the second piston plate 222 stable. When the air pressure in the air cylinder 221 increases, the second piston plate 222 is controlled to move. At this time, the second piston plate 222, the second connecting rod 223 and the moving frame 226 move, and the movement of the second piston plate 222 is controlled by the change in air pressure. The shape of the extrusion frame and the extrusion hole 227 cooperates with the contact rod 252, which can control the contact rod 252 to reciprocate in the vertical direction.

[0029] Specifically, Figure 7 and Figure 9-10 As shown, the sliding pushing mechanism 25 includes a slide plate 251 and a contact rod 252 slidably connected in the extrusion hole 227, the slide plate 251 is slidably connected in the sliding hole 23, a sliding groove 253 is provided on the slide plate 251, a sliding block 254 is slidably connected in the sliding groove 253, a push plate 255 is fixedly connected to the sliding block 254, and a guide column 257 slidably connected in the guide groove 24 is fixedly connected to the side of the sliding block 254.

[0030] An air outlet head 256 is provided on the side of the push plate 255, and a connecting pipe 258 connected to the air outlet head 256 is provided under the sliding block 254. The connecting pipe 258 passes through the placement seat 17 and is connected to the buffer contact mechanism 26. The guide groove 24 is set to an inclined shape, the guide column 257 is set to a cylindrical shape, and the cross-sectional shape of the sliding block 254 is set to a cross shape.

[0031] The cross-shaped sliding block 254 can ensure that the sliding block 251 moves while controlling the sliding block 254 to move in the vertical direction, and the slider can slide smoothly in the horizontal direction in the sliding groove 253. The sliding plate 251 is restricted by the sliding hole 23 and can move stably in the vertical direction in the sliding hole 23. The guide column 257 is restricted by the guide groove 24. When the guide column 257 moves upward, it is guided by the inclined guide groove 24 to control the push plate 255 to move in an inclined direction close to the part, and the air outlet head 256 can blow out gas to act on the part.

[0032] Specifically, Figure 11-12 As shown, the buffer contact mechanism 26 includes a cylinder 261 fixedly connected to the placement seat 17, the side of the cylinder 261 is connected to a one-way exhaust pipeline 262 connected to the connecting pipe 258, the side of the cylinder 261 is connected to an intake valve 263, a circular plate 264 is slidably connected inside the cylinder 261, and a vertical rod 265 is fixedly connected under the circular plate 264.

[0033] The vertical rod 265 passes through and is slidably connected under the cylinder 261. The bottom end of the vertical rod 265 is fixedly connected to a buffer plate 267. The outer sleeve of the vertical rod 265 is provided with a third elastic component 266 fixedly connected to the circular plate 264 and the inner wall of the cylinder 261. The air intake valve 263 and the one-way exhaust pipeline 262 are both connected to the air storage cavity in the cylinder 261 located on the upper side of the circular plate 264.

[0034] The third elastic component 266 can buffer the upward movement of the circular plate 264 and the buffer plate 267, so that the falling process of the placement seat 17 is buffered and protected. When the circular plate 264 is squeezed and moved upward, the gas in the cylinder 261 can be squeezed out through the one-way exhaust pipe 262, the connecting pipe 258 and the gas outlet head 256. When the circular plate 264 moves downward, the external gas can be sucked into the cylinder 261 through the intake valve 263.

[0035] A spraying method of an automatic spraying device, the spraying method comprising the following steps: The parts to be sprayed are placed on the placement seat 17 on the pad 27 through the pick-and-place door 3, and then the electric slider 14 slides in the support guide rail 13, and the electric hydraulic rod 15 is controlled to drive the clamping plate 16 to clamp the placement seat 17. The electric slider 14 drives the placement seat 17 to move to the left to the support seat 4, and then the electric hydraulic rod 15 is controlled to shorten. At this time, the clamping plate 16 is separated from the placement seat 17, and the placement seat 17 moves down. First, the buffer plate 267 contacts the support seat 4, and the buffer plate 267 and the circular plate 264 are squeezed and moved upward, and the third elastic component 266 is stretched. At the same time, the lowering process of the placement seat 17 and the parts is buffered to reduce the vibration. At the same time, the gas in the upper gas storage chamber in the cylinder 261 is squeezed; After the clamping plate 16 is separated from the placement seat 17, the first contact plate 215 loses its extrusion, and at the same time, the first elastic component 214 controls the first piston plate 212 to move away from the part, and the gas in the gas storage frame 211 is squeezed and transferred to the gas storage cylinder 221 through the hose. The gas pressure in the gas storage cylinder 221 increases and controls the second piston plate 222 to move. At this time, the second piston plate 222, the second connecting rod 223 and the moving frame 226 move. When the moving frame 226 moves, it drives the contact rod 252 to move upward through the extrusion hole 227. At the same time, the contact rod 252 controls the slide plate 251, the sliding block 254 and the push plate 255 to move upward. Since the guide column 257 and the sliding block 254 are limited by the inclined guide groove 24, the push plate 255 moves closer to the part while moving upward, and the four push plates 255 moving simultaneously push the part to the middle position of the placement seat 17. At the same time, the gas in the cylinder 261 is blown onto the part to be sprayed through the one-way exhaust pipe 262, the connecting pipe 258 and the gas outlet head 256, so as to realize the blowing and cleaning of the surface of the part. After the contact rod 252 moves to the uppermost position, the extrusion hole 227 drives the contact rod 252 to move downward. At this time, the push plate 255 resets and moves into the sliding hole 23, and then controls the connection pump 10 to work. At this time, the spray head 6 sprays paint to act on the surface of the part, and the connection pump 10 sucks the gas and sprays it downward through the outlet pipe 9 and the outlet frame 7. The sprayed gas forms a square air wall that covers the placement seat 17. The air wall prevents impurities in the gas outside the placement seat 17 from mixing with the sprayed paint, and at the same time carries the misted paint flying in the air downward into the suction groove 5. The formation of the air wall can prevent the gas flow in the spray box 1 from affecting the flow of the sprayed misted paint, and the paint can act smoothly on the surface of the part. At the same time, the connection pump 10 sucks the gas through the filter box 11, the intermediate pipe 12 and the suction groove 5, which is convenient for sucking and cleaning the gas and scattered paint. When the spraying is completed, the control connection pump 10 stops working and the part can be taken out.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic spraying device, comprising a spraying box (1) and a support base (4), characterized in that: The support seat (4) is fixedly connected to the inner bottom wall of the spray box (1); an air suction groove (5) connected to the inside of the spray box (1) is provided in the support seat (4); a paint pipe (8) and an air outlet pipe (9) are connected through the inner bottom wall of the spray box (1); the bottom end of the air outlet pipe (9) is connected to an air outlet frame (7); a spray head (6) connected to the paint pipe (8) is fixedly connected below the air outlet frame (7); one end of the air outlet pipe (9) located outside the spray box (1) is connected to a connecting pump (10) provided on the spray box (1); the connecting pump (10) is connected to a filter box (11) fixedly connected to the spray box (1) through a pipeline; the back of the filter box (11) is connected to an intermediate pipe (12); the other end of the intermediate pipe (12) passes through the spray box (1) and is connected to the air suction groove (5) in the support seat (4) The support seat (4) is provided with a placement seat (17), the placement seat (17) is provided with four connecting holes (19), the placement seat (17) is provided with two grooves (20) on both the front and rear sides, the groove (20) is provided with an extrusion adjustment mechanism (21), the connecting hole (19) is provided with a movable extrusion mechanism (22), the extrusion adjustment mechanism (21) and the movable extrusion mechanism (22) are connected via a hose, the top wall of the connecting hole (19) is provided with a sliding hole (23), the inner wall of the sliding hole (23) is provided with a guide groove (24), the guide groove (24) and the sliding hole (23) are slidably connected with a sliding push mechanism (25) provided in the movable extrusion mechanism (22), and a buffer contact mechanism (26) connected with the sliding push mechanism (25) is provided under the placement seat (17).

2. An automatic spraying device according to claim 1, characterized in that: Two support rails (13) are fixedly connected to the inner wall of the spray box (1), and an electric slider (14) is arranged inside the support rail (13). An electric hydraulic rod (15) is fixedly connected to the side of the electric slider (14) close to the support seat (4), and a clamping plate (16) is fixedly connected to the other end of the electric hydraulic rod (15). The clamping plate (16) is arranged in the groove (20), and an anti-slip pad (18) is fixedly connected to the placement seat (17).

3. An automatic spraying device according to claim 1, characterized in that: The spray box (1) has a pick-up and place door (3) hingedly connected to its left and right sides, an observation window (2) is inserted through the front of the spray box (1), a support leg is fixedly connected to the bottom of the spray box (1), and two pads (27) are fixedly connected to the inner bottom wall of the spray box (1).

4. An automatic spraying device according to claim 2, characterized in that: The extrusion adjustment mechanism (21) comprises an air storage frame (211) fixedly connected to the groove (20), a first piston plate (212) being slidably connected to the air storage frame (211), a first connecting rod (213) being fixedly connected to the side of the first piston plate (212), a first contact plate (215) being fixedly connected to the other end of the first connecting rod (213), the first contact plate (215) being arranged outside the clamping plate (16), a first elastic component (214) being fixedly connected to the first piston plate (212) and the inner wall of the air storage frame (211) being arranged on the outer sleeve of the first connecting rod (213), and the air storage frame (211) being connected to a hose.

5. The automatic spraying device according to claim 1, characterized in that: The movable extrusion mechanism (22) comprises an air cylinder (221) fixedly connected to the connection hole (19), the air cylinder (221) being in communication with a hose, a second piston plate (222) being slidably connected to the air cylinder (221), a second connecting rod (223) being fixedly connected to the side of the second piston plate (222), an end of the second connecting rod (223) located outside the air cylinder (221) being fixedly connected to a movable plate (225), a second elastic component (224) being fixedly connected to the second piston plate (222) and the inner wall of the air cylinder (221) being disposed on the outer sleeve of the second connecting rod (223), a movable frame (226) being fixedly connected to the side of the movable plate (225), an extrusion hole (227) being provided in the movable frame (226), and the sliding pushing mechanism (25) being slidably connected to the extrusion hole (227).

6. The automatic spraying device according to claim 1, characterized in that: The sliding push mechanism (25) comprises a slide plate (251) and a contact rod (252) slidably connected in the extrusion hole (227); the slide plate (251) is slidably connected in the sliding hole (23); a sliding groove (253) is provided on the slide plate (251); a sliding block (254) is slidably connected in the sliding groove (253); a push plate (255) is fixedly connected to the sliding block (254); and a guide column (257) slidably connected in the guide groove (24) is fixedly connected to the side surface of the sliding block (254).

7. An automatic spraying device according to claim 6, characterized in that: An air outlet head (256) is provided on the side of the push plate (255), a connecting pipe (258) connected to the air outlet head (256) is provided under the sliding block (254), the connecting pipe (258) is provided in the placement seat (17) and is connected to the buffer contact mechanism (26), the guide groove (24) is arranged to be inclined, the guide column (257) is arranged to be cylindrical, and the cross-sectional shape of the sliding block (254) is arranged to be cross-shaped.

8. The automatic spraying device according to claim 1, characterized in that: The buffer contact mechanism (26) comprises a cylinder (261) fixedly connected to the placement seat (17); a side of the cylinder (261) is connected to a one-way exhaust pipeline (262) connected to the connection pipe (258); a side of the cylinder (261) is connected to an intake valve (263); a circular plate (264) is slidably connected inside the cylinder (261); and a vertical rod (265) is fixedly connected below the circular plate (264).

9. An automatic spraying device according to claim 8, characterized in that: The vertical rod (265) passes through and is slidably connected under the cylinder (261); a buffer plate (267) is fixedly connected to the bottom end of the vertical rod (265); a third elastic component (266) is disposed on the outer sleeve of the vertical rod (265) and is fixedly connected to the circular plate (264) and the inner wall of the cylinder (261); and the air intake valve (263) and the one-way exhaust pipeline (262) are both connected to an air storage cavity located on the upper side of the circular plate (264) in the cylinder (261).

10. A spraying method of an automatic spraying device, according to the automatic spraying device according to any one of claims 1 to 9, characterized in that: The spraying method comprises the following steps: The parts to be sprayed are placed on the placement seat (17) on the pad (27) through the pick-and-place door (3), and then the electric slider (14) slides in the support rail (13), and the electric hydraulic rod (15) is controlled to drive the clamping plate (16) to clamp the placement seat (17). The electric slider (14) drives the placement seat (17) to move to the left onto the support seat (4), and then the electric hydraulic rod (15) is controlled to shorten. At this time, the clamping plate (16) is separated from the placement seat (17), and the placement seat (17) moves downward. First, the buffer plate (267) contacts the support seat (4), and the buffer plate (267) and the circular plate (264) are squeezed and moved upward. The third elastic component (266) is stretched, and at the same time, the lowering process of the placement seat (17) and the parts is buffered to reduce the vibration. At the same time, the gas in the upper gas storage chamber in the cylinder (261) is squeezed; After the clamping plate (16) is separated from the placement seat (17), the first contact plate (215) loses its extrusion, and at the same time, the first elastic component (214) controls the first piston plate (212) to move away from the part, and the gas in the gas storage frame (211) is squeezed and transferred to the gas storage cylinder (221) through the hose. The gas pressure in the gas storage cylinder (221) increases to control the movement of the second piston plate (222). At this time, the second piston plate (222), the second connecting rod (223) and the moving frame (226) move. When the moving frame (226) moves, it drives the contact rod (252) to move upward through the extrusion hole (227). At the same time, the contact rod (252) controls the slide plate (251), the sliding block (254) and the push plate (255) to move upward. The guide column (257) and the sliding block (254) are limited by the inclined guide groove (24), so that the push plate (255) moves upward and approaches the part. The four push plates (255) that move simultaneously push the part to the middle position of the placement seat (17). At the same time, the gas in the cylinder (261) is blown onto the part to be sprayed through the one-way exhaust pipe (262), the connecting pipe (258) and the gas outlet head (256), so as to achieve the blowing and cleaning of the surface of the part. After the contact rod (252) moves to the uppermost position, the extrusion hole (227) drives the contact rod (252) to move downward. At this time, the push plate (255) is reset and moved into the sliding hole (23), and then the connection pump (10) is controlled to work. At this time, the spray head (6) sprays the paint to act on the surface of the part, and the connection pump (10) sucks the gas and sprays it downward through the air outlet pipe (9) and the air outlet frame (7). The sprayed gas forms a square air wall around the placement seat (17). The air wall prevents impurities in the gas outside the placement seat (17) from mixing with the sprayed paint, and at the same time carries the misty paint flying in the air downward into the suction groove (5). The formation of the air wall can prevent the gas flow in the spray box (1) from affecting the flow of the sprayed misty paint, and the paint can act smoothly on the surface of the part. At the same time, the connection pump (10) sucks the gas through the filter box (11), the intermediate pipe (12) and the suction groove (5), which is convenient for sucking and cleaning the gas and the scattered paint. When the spraying is completed, the control connection pump (10) stops working and the part can be taken out.

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