Coating film detection system

Abstract

The invention discloses a coating film detection system. Comprising a first horizontal carrying module extending front and back, a test carrying seat installed on a movable part of the first horizontal carrying module, a material disc feeding unit arranged on the outer side of the front end of the first horizontal carrying module, a material disc discharging unit arranged on the outer side of the rear end of the first horizontal carrying module, and a test unit arranged above the test carrying seat. A feeding unit used for carrying at least one product in a charging tray to the test carrying seat is arranged between the charging tray feeding unit and the test carrying seat, and a discharging unit used for carrying at least one product on the test carrying seat to the charging tray is arranged between the test carrying seat and the charging tray discharging unit. And an overturning unit is arranged between the feeding unit and the test carrying seat, and an overturning unit is arranged between the test carrying seat and the discharging unit. While batch feeding, discharging and detection of the products are automatically achieved, the film coating surfaces of the products can be protected, and damage caused by exposure of the products in the non-detection process is avoided.

Description

Technical Field

[0001] This invention relates to the field of coating inspection technology, and in particular to a coating inspection system. Background Technology

[0002] In the processing of glass products, a coating is applied to achieve effects such as scratch resistance, fingerprint resistance, and blue light protection. However, during the coating process, defects often occur due to incomplete coating, requiring judgment and sorting to remove defective products. Currently, the industry commonly relies on manual visual inspection. Specifically, workers apply a detection liquid (usually alcohol or water vapor) to the surface of the object being inspected using a cloth, while simultaneously visually inspecting for defects. However, this method is labor-intensive, inefficient, and lacks standardized procedures, failing to meet the practical requirements of production and commercialization. While existing technologies offer inspection devices that can partially replace manual labor, they still suffer from low levels of automation and efficiency, hindering the standardization and consistency of results required for large-scale mass production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a coating inspection system that can automatically perform batch loading, unloading and inspection of products, while protecting the coating surface of the products and preventing damage caused by exposure during non-inspection processes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a coating inspection system, comprising: a first horizontal transport module extending front to back, a test carrier mounted on the movable part of the first horizontal transport module, a material tray loading unit disposed on the outer side of the front end of the first horizontal transport module, a material tray unloading unit disposed on the outer side of the rear end of the first horizontal transport module, and a test unit disposed above the test carrier, characterized in that: a loading unit for transporting at least one product in the material tray to the test carrier is disposed between the material tray loading unit and the test carrier; an unloading unit for transporting at least one product on the test carrier to the material tray is disposed between the test carrier and the material tray unloading unit; and a flipping unit is disposed between the loading unit and the test carrier, and between the test carrier and the unloading unit. The testing unit further includes: a camera for photographing the product, a light source located below the camera, a spray valve, a wiping block, a cloth-laying module, and a cloth-retrieving module. In the direction of movement of the testing platform, the wiping block is located behind the spray valve. A wiping cloth is wrapped around the cloth-laying module, the wiping block, and the cloth-retrieving module. The end of the wiping block is provided with a wiping head for contacting the product on the testing platform via the wiping cloth. At least two groups of liquid outlet holes are provided in the area of ​​the wiping block near the wiping head, spaced apart in the direction of cloth movement. Each group of liquid outlet holes consists of several liquid outlet holes spaced apart along the width of the cloth and each in contact with the cloth. The liquid outlet holes in different groups are staggered in the width of the cloth. In the direction of cloth movement, the group of liquid outlet holes is located on the side of the wiping head near the cloth-laying module. Each liquid outlet hole is connected to a liquid flow channel located within the wiping block. This liquid flow channel and the spray valve are each connected to a liquid supply unit via a pipeline.

[0005] The following are further improvements to the above technical solution: 1. In the above scheme, the material tray loading unit and the material tray unloading unit further include: a mounting base plate, a left bracket and a right bracket respectively disposed on both sides of the upper surface of the mounting base plate, a second horizontal transport module mounted on the upper surface of the mounting base plate, and a vertical transport module disposed on the side of the mounting base plate near the first horizontal transport module. The movable part of the second horizontal transport module located between the left bracket and the right bracket can move back and forth. A left baffle is installed on the side of the left bracket facing the right bracket, and a right baffle is installed on the side of the right bracket facing the left bracket, which is opposite to the left baffle. At least two movable blocks are installed on the movable part of the vertical transport module. The horizontal part of the movable block connected to the vertical part of the vertical transport module extends between the left baffle and the right baffle and is used to contact the bottom surface of the material tray.

[0006] 2. In the above scheme, a stacking gap is formed at the edges of any two adjacent material trays among the vertically stacked trays. A left cylinder is installed on the left support and on the outer side of the upper end of the left baffle. A left push plate facing the right baffle is installed on the piston rod of the left cylinder. A right cylinder is installed on the right support and on the outer side of the upper end of the right baffle. A right push plate facing the left baffle is installed on the piston rod of the right cylinder. At least one left and right material distribution block for overlapping contact with the lower surface of the tray edge is installed on the surface of the left and right push plates opposite to the left and right cylinders, respectively. A beam plate that can move back and forth in the horizontal direction is installed between the left and right supports. A vertical cylinder is installed on the upper surface of the beam plate. A strip plate is installed on the piston rod of the vertical cylinder. The rear end of a horizontal carrier plate set between the left and right baffles is connected to movable blocks installed at both ends of the strip plate.

[0007] 3. In the above scheme, at least one side push block is movably installed on the left push plate or the right push plate through the guide post and the guide sleeve. The side push block, which can move left and right, is connected to the corresponding left push plate or the right push plate by a first spring that extends left and right, so that the side push block can be pressed into contact with the side surface of the material tray.

[0008] 4. In the above scheme, a vertically arranged connecting cylinder is installed on the movable part of the first horizontal transport module, and the test carrier is installed on the movable part of the connecting cylinder. The flipping unit further includes: a first vacuum carrier, a second vacuum carrier, and a bracket corresponding to the test carrier. A rotating plate is rotatably installed on the bracket and connected to the output shaft of a rotary motor installed on the bracket. A plurality of adsorption holes are opened on one side surface of the first vacuum carrier and the second vacuum carrier respectively. The first vacuum carrier and the second vacuum carrier, which are respectively installed at both ends of the rotating plate, are arranged facing each other, and their other side surfaces are opposite each other.

[0009] 5. In the above scheme, the first vacuum carrier and the second vacuum carrier are each mounted on the side of the rotating plate opposite to the rotating motor by at least one set of mutually cooperating third slide rails and third sliders. The first vacuum carrier and the second vacuum carrier are each provided with a stop block on the side opposite to the adsorption hole. A second spring extending along the moving direction of the first vacuum carrier and the second vacuum carrier is provided between the stop block mounted on the rotating plate and the corresponding first vacuum carrier and second vacuum carrier.

[0010] 6. In the above scheme, a support block is installed on the surface of the first vacuum carrier and the second vacuum carrier facing the stop block. The support block and the rotating plate are connected by a third slide rail and a third slider. The second spring is connected between the support block and the stop block.

[0011] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: 1. The coating inspection system of the present invention includes a loading unit for transporting at least one product in the tray to the test carrier between the loading unit and the test carrier, and a unloading unit for transporting at least one product on the test carrier to the tray between the test carrier and the unloading unit. A flipping unit is provided between the loading unit and the test carrier, and between the test carrier and the unloading unit. While automatically realizing the batch loading, unloading and inspection of products, it can protect the coating surface of the products and avoid damage caused by exposure during non-inspection processes.

[0012] 2. The coating inspection system of the present invention includes a testing unit comprising a spray valve, a wiping block, a cloth-laying module, and a cloth-retrieving module. In the moving direction of the test carrier, the wiping block is located behind the spray valve. A wiping cloth is wrapped around the cloth-laying module, the wiping block, and the cloth-retrieving module. The end of the wiping block is provided with a wiping head for contacting the product on the test carrier via the wiping cloth. At least two groups of liquid outlet holes are provided in the area of ​​the wiping block near the wiping head, spaced apart in the cloth-laying direction. Each group of liquid outlet holes consists of several liquid outlet holes spaced apart along the width of the cloth and each in contact with the cloth. The liquid outlet holes in different groups are staggered in the width of the cloth. In the cloth-laying direction, the group of liquid outlet holes is located on the side of the wiping head near the cloth-laying module. Each liquid outlet hole communicates with a liquid flow channel located within the wiping block. This liquid flow channel and the spray valve... Each valve is connected to the liquid supply unit via pipeline. The detection liquid is sprayed into the product to be tested in an atomized manner and then wiped with a cloth. This improves the uniformity and sufficiency of the detection liquid distribution on the surface of the product, thereby improving the consistency of the detection liquid dissipation on the surface of the product and the difference in dissipation traces between complete and defective coating areas. This improves the accuracy of the detection and the comprehensiveness of the detection of defects of various types and areas. Furthermore, the liquid outlet holes, which are evenly and staggeredly arranged near the front end of the wiping head, can effectively and accurately control the amount of wiping liquid and ensure that the liquid is evenly distributed with the wiping cloth. This also avoids the waste and overflow of wiping liquid and the evaporation and loss of liquid soaked in the wiping cloth, further improving the uniformity and sufficiency of the detection liquid distribution on the surface of the product after wiping, thereby improving the accuracy of the detection results. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the overall structure of the coating inspection system of the present invention; Appendix Figure 2 This is a three-dimensional schematic diagram of a partial structure of the coating inspection system of the present invention; Appendix Figure 3 This is a front view of a partial structure of the coating inspection system of the present invention; Appendix Figure 4 This is a magnified view of a portion of the structure of the wiping block and wiping head in the coating inspection system of the present invention; Appendix Figure 5 This is a schematic diagram of the material loading and unloading unit in the coating inspection system of the present invention; Appendix Figure 6 This is a magnified view of a portion of the loading and unloading unit of the material tray in the coating inspection system of the present invention. Figure 1 ; Appendix Figure 7 This is a magnified view of a portion of the loading and unloading unit of the material tray in the coating inspection system of the present invention. Figure 2 ; Appendix Figure 8This is a magnified view of a portion of the loading and unloading unit of the material tray in the coating inspection system of the present invention. Figure 3 ; Appendix Figure 9 This is a magnified view of a portion of the loading and unloading unit of the material tray in the coating inspection system of the present invention. Figure 4 ; Appendix Figure 10 This is a magnified view of a portion of the loading and unloading unit of the material tray in the coating inspection system of the present invention. Figure 5 ; Appendix Figure 11 This is a schematic diagram of the flipping unit in the coating detection system of the present invention.

[0014] In the attached diagrams: 100, tray; 101, product; 102, stacking gap; 201, second horizontal transport module; 202, test carrier; 300, tray loading unit; 400, tray unloading unit; 500, testing unit; 600, loading unit; 700, unloading unit; 800, flipping unit; 1, wiping block; 2, wiping head; 3, liquid outlet group; 301, liquid outlet; 4, liquid... 5. Flow channel; 61. Wiping cloth; 62. Cloth feeding module; 7. Cloth collecting module; 8. Camera; 9. Light source; 10. Spray valve; 11. Mounting base plate; 12. Left bracket; 13. Right bracket; 131. Column; 132. Top plate; 14. Second horizontal transport module; 15. Vertical transport module; 16. Movable block; 161. Vertical part; 162. Horizontal part; 171. Left baffle; 172. Right baffle; 173. Clearance hole; 181. Left cylinder; 182. Right cylinder; 19. Left push plate; 20. Right push plate; 21. Left material distribution block; 22. Right material distribution block; 23. Beam plate; 231. First slide rail; 232. First slider; 24. Horizontal carrier plate; 25. Cylinder; 261. Guide post; 262. Guide sleeve; 27. Side push block; 28. First spring; 29. ​​Lower pressure block; 30. Vertical cylinder; 31. 32. Strip plate; 33. Movable block; 34. Connecting arm; 35. Support plate; 351. Second slide rail; 352. Second slider; 41. Bracket; 42. Rotary motor; 43. Rotating plate; 441. First vacuum carrier; 442. Second vacuum carrier; 45. Adsorption hole; 481. Slide rail; 482. Third slider; 49. Third stop block; 50. Second spring; 51. Support block; 53. Connecting cylinder. Detailed Implementation

[0015] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0016] Example 1: A coating inspection system, comprising: a first horizontal transport module 201 extending front to back, a test carrier 202 mounted on the movable part of the first horizontal transport module 201, a material tray loading unit 300 disposed on the outer side of the front end of the first horizontal transport module 201, a material tray unloading unit 400 disposed on the outer side of the rear end of the first horizontal transport module 201, and a test unit 500 disposed above the test carrier 202, characterized in that: a loading unit 600 for transporting at least one product 101 in the material tray 100 to the test carrier 202 is disposed between the material tray loading unit 300 and the test carrier 202; an unloading unit 700 for transporting at least one product 101 on the test carrier 202 to the material tray 100 is disposed between the test carrier 202 and the material tray unloading unit 400; and a flipping unit 800 is disposed between the loading unit 600 and the test carrier 202, and between the test carrier 202 and the unloading unit 700. The test unit 500 further includes: a camera 7 for photographing the product 101, a light source 8 disposed below the camera 7, a spray valve 9, a wiping block 1, a cloth-laying module 61, and a cloth-receiving module 62. In the moving direction of the test carrier 202, the wiping block 1 is located behind the spray valve 9. A wiping cloth 5 is wrapped around the cloth-laying module 61, the wiping block 1, and the cloth-receiving module 62. The end of the wiping block 1 is provided with a wiping head 2 for contacting the product 101 on the test carrier 202 via the wiping cloth 5. The area of ​​the wiping block 1 near the wiping head 2 is provided with at least... Two groups of liquid outlet holes 3 are spaced apart in the direction of movement of the wiping cloth 5. Each group of liquid outlet holes 3 consists of several liquid outlet holes 301 arranged at intervals along the width direction of the wiping cloth 5 and each in contact with the wiping cloth 5. The liquid outlet holes 301 in different groups of liquid outlet holes 3 are staggered in the width direction of the wiping cloth 5. The group of liquid outlet holes 3 in the direction of movement of the wiping cloth 5 is located on the side of the wiping head 2 near the cloth placement module 61. Each of the liquid outlet holes 301 is connected to the liquid flow channel 4 provided in the wiping block 1. The liquid flow channel 4 and the spray valve 9 are each connected to the liquid supply unit through pipelines.

[0017] The tray loading unit 300 and tray unloading unit 400 each further include: a mounting base plate 11, a left support 12 and a right support 13 respectively disposed on both sides of the upper surface of the mounting base plate 11, a second horizontal transport module 14 mounted on the upper surface of the mounting base plate 11, and a vertical transport module 15 disposed on the side of the mounting base plate 11 near the first horizontal transport module 201. The movable part of the second horizontal transport module 14 located between the left support 12 and the right support 13 can move back and forth. The left support 12 A left baffle 171 is installed on the side facing the right support 13, and a right baffle 172 is installed on the side facing the left support 12 of the right support 13, which is opposite to the left baffle 171. At least two spaced movable blocks 16 are installed on the movable part of the vertical transport module 15. The horizontal part 162 of the movable block 16, which is connected to the vertical part 161 and the movable part of the vertical transport module 15, extends between the left baffle 171 and the right baffle 172 and is used to contact the bottom surface of the tray 100.

[0018] A stacking gap 102 is formed at the edges of any two adjacent material trays 100 that are vertically stacked. A left cylinder 181 is installed on the left support 12 and on the outer side of the upper end of the left baffle 171. A left push plate 19 facing the right baffle 172 is installed on the piston rod of the left cylinder 181. A right cylinder 182 is installed on the right support 13 and on the outer side of the upper end of the right baffle 172. A right push plate 20 facing the left baffle 171 is installed on the piston rod of the right cylinder 182. At least one tool for... The lower surfaces of the material tray 100 overlap and contact the left dividing block 21 and the right dividing block 22. A beam plate 23 that can move back and forth in the horizontal direction is installed between the left support 12 and the right support 13. A vertical cylinder 30 is installed on the upper surface of the beam plate 23. A strip plate 31 is installed on the piston rod of the vertical cylinder 30. The rear end of a horizontal carrier plate 24 located between the left baffle 171 and the right baffle 172 is connected to movable blocks 32 installed at both ends of the strip plate 31. This allows for automatic separation of stacked material trays containing products and stable connection of separated material trays. It also ensures the stability of the material trays and the products in the material trays throughout the process.

[0019] On the upper surface of the beam plate 23, a support plate 34 is provided on each of the two movable blocks 32 opposite to the strip plate 31. The support plate 34 facing the movable block 32 is connected to the corresponding movable block 32 by a second slide rail 351 and a second slider 352 through mutual cooperation. The two movable blocks 32 are connected by a connecting arm 33. The vertically extending second slide rail 351 is fixedly installed on the movable block 32, and the second slider 352, which slides in cooperation with the second slide rail 351, is fixedly installed on the support plate 34.

[0020] At least one side push block 27 is movably mounted on the left push plate 19 or the right push plate 20 via a guide post 261 and a guide sleeve 262. The side push block 27, which can move left and right, is connected to the corresponding left push plate 19 or right push plate 20 by a first spring 28 extending left and right, so that the side push block 27 can be pressed into contact with the side surface of the material tray 100.

[0021] A side push block 27 is installed on the left push plate 19 and on both sides of the left material distribution block 21. Each side push block 27 is connected to one end of two guide posts 261. The other end of the guide posts 261 can pass through the guide sleeve 262 installed on the left push plate 19. The first spring 28 is disposed between two guide posts 261, and two right material distribution blocks 22 are installed at intervals on the right push plate 20, and a lower pressing block 29 is installed between the two right material distribution blocks 22 for pressing and contacting the upper surface at the edge of the material tray 100. It can elastically clamp and position the separated tray, thereby protecting the tray and improving its positional accuracy. It can also limit the tray in multiple directions by pressing down, further improving its positional accuracy and stability. Especially during the process of external mechanism picking up and putting down products in the tray, it can prevent the tray from being deflected by external force, which would affect the positional accuracy of the products in the tray.

[0022] The two ends of the beam plate 23 are slidably connected to the left support 12 and the right support 13 through at least one set of first slide rails 231 and first sliders 232 that cooperate with each other. The beam plate 23 is connected to the movable part of a cylinder 25 installed on the left support 12 or the right support 13.

[0023] The left baffle 171 and the right baffle 172 are each installed on the column 131, and the two ends of the beam plate 23 are respectively movably installed on the top plate 132 of the left support 12 and the right support 13.

[0024] The cylinder 25 is a magnetic couple rodless cylinder. The left support 12 and the right support 13 each include: at least two columns 131 arranged at intervals and a top plate 132 horizontally installed between the upper ends of the columns 131.

[0025] The left cylinder 181 and the right cylinder 182 are each mounted on the upper surface of the top plate 132 of the left support 12 and the right support 13 respectively via supports. The left baffle 171 and the right baffle 172 are each provided with a clearance hole 173 for the left material distribution block 21 and the right material distribution block 22 to pass through.

[0026] Example 2: A coating inspection system, comprising: a first horizontal transport module 201 extending front to back, a test carrier 202 mounted on the movable part of the first horizontal transport module 201, a material tray loading unit 300 disposed on the outer side of the front end of the first horizontal transport module 201, a material tray unloading unit 400 disposed on the outer side of the rear end of the first horizontal transport module 201, and a test unit 500 disposed above the test carrier 202, characterized in that: a loading unit 600 for transporting at least one product 101 in the material tray 100 to the test carrier 202 is disposed between the material tray loading unit 300 and the test carrier 202; an unloading unit 700 for transporting at least one product 101 on the test carrier 202 to the material tray 100 is disposed between the test carrier 202 and the material tray unloading unit 400; and a flipping unit 800 is disposed between the loading unit 600 and the test carrier 202, and between the test carrier 202 and the unloading unit 700. The test unit 500 further includes: a camera 7 for photographing the product 101, a light source 8 disposed below the camera 7, a spray valve 9, a wiping block 1, a cloth-laying module 61, and a cloth-receiving module 62. In the moving direction of the test carrier 202, the wiping block 1 is located behind the spray valve 9. A wiping cloth 5 is wrapped around the cloth-laying module 61, the wiping block 1, and the cloth-receiving module 62. The end of the wiping block 1 is provided with a wiping head 2 for contacting the product 101 on the test carrier 202 via the wiping cloth 5. The area of ​​the wiping block 1 near the wiping head 2 is provided with at least... Two groups of liquid outlet holes 3 are spaced apart in the direction of movement of the wiping cloth 5. Each group of liquid outlet holes 3 consists of several liquid outlet holes 301 arranged at intervals along the width direction of the wiping cloth 5 and each in contact with the wiping cloth 5. The liquid outlet holes 301 in different groups of liquid outlet holes 3 are staggered in the width direction of the wiping cloth 5. The group of liquid outlet holes 3 in the direction of movement of the wiping cloth 5 is located on the side of the wiping head 2 near the cloth placement module 61. Each of the liquid outlet holes 301 is connected to the liquid flow channel 4 provided in the wiping block 1. The liquid flow channel 4 and the spray valve 9 are each connected to the liquid supply unit through pipelines.

[0027] A vertically arranged connecting cylinder 53 is installed on the movable part of the first horizontal transport module 201. The test carrier 202 is installed on the movable part of the connecting cylinder 53. The flipping unit 800 further includes: a first vacuum carrier 441, a second vacuum carrier 442 and a bracket 41, which are arranged corresponding to the test carrier 202. A rotating plate 43 is rotatably installed on the bracket 41 and connected to the output shaft of a rotary motor 42 installed on the bracket 41. A plurality of adsorption holes 45 are opened on one side surface of the first vacuum carrier 441 and the second vacuum carrier 442 respectively. The first vacuum carrier 441 and the second vacuum carrier 442, which are respectively installed at both ends of the rotating plate 43, are arranged facing each other, and their other side surfaces are opposite each other. This can realize efficient flipping, connecting and transporting of products and ensure the stability of the product position before and after flipping and during flipping. This facilitates the inspection and processing of the product coating surface and can also shield and protect the coating surface from damage when not necessary.

[0028] The first vacuum carrier 441 and the second vacuum carrier 442 are each mounted on the rotating plate 3 on the side opposite to the rotary motor 42 via at least one set of mutually cooperating third slide rails 481 and third sliders 482. Each of the first vacuum carrier 441 and the second vacuum carrier 442 is provided with a stop block 49 on the side opposite to the adsorption hole 45. A second spring 50 extending along the moving direction of the first vacuum carrier 441 and the second vacuum carrier 442 is provided between the stop block 49 mounted on the rotating plate 43 and the corresponding first vacuum carrier 441 and second vacuum carrier 442. This can buffer and equalize the force acting on the product when placing the product on the carrier or picking up the product on the carrier, so as to avoid damage caused by excessive local force on the product.

[0029] Each of the first vacuum carrier 441 and the second vacuum carrier 442 has a support block 51 installed on the surface facing the stop block 49. The support block 51 is connected to the rotating plate 3 through a third slide rail 481 and a third slider 482. The second spring 50 is connected between the support block 51 and the stop block 49.

[0030] Working principle: Used for defect detection on the coated surface of glass products (such as the glass back panel of electronic products), the coated surface is the surface to be wiped and the surface to be inspected; Trays are generally used for storing precision products (such as glass back panels for electronic products), and a single tray typically contains multiple products. For the tray feeding unit: In use, first move the movable carrier plate on the second horizontal transport module to the rear end away from its vertical transport module, and then place several (e.g., 20) vertically stacked trays onto the movable carrier plate of the second horizontal transport module by manual or external handling mechanism. Move the movable block on the vertical transport module to a low position. At this time, the movable block is lower than the material tray stacked on the movable plate of the second horizontal transport module. Drive the movable carrier plate of the second horizontal transport module forward until the material tray stacked on it moves directly above the movable block on the vertical transport module; The movable block of the vertical transport module is driven to move upward, thereby moving the stacked trays upward from the movable plate of the second horizontal transport module. Continue to drive the movable block of the vertical transport module to move up to a high position, so that the stacking gap formed between the two material trays at the top layer is consistent with the height of the left and right material distribution blocks; At the same time, the left and right cylinders are switched from the initial contraction state to the extension state, thereby driving the left and right push plates to move synchronously towards the material tray, so that the left and right material distribution blocks installed on the left and right push plates are simultaneously embedded in the stacked gap formed between the two material trays at the top layer and overlap and contact the lower surface at the edge of the top material tray. At the same time, the side push block that moves with the left or right push plate can press against the side surface of the material tray under the action of the spring, thereby clamping and positioning the material tray in the left and right directions and avoiding damage to the material tray. Furthermore, the cooperation of the left and right material distribution blocks with the lower pressure block can achieve vertical clamping and positioning of the material tray, further improving the positional accuracy. The moving block of the vertical transport module moves downward. At this time, the uppermost tray cannot move upward with it because the left and right dividing blocks are at their stops, thus separating the uppermost tray from the tray below it. Next, the vertical cylinder 30 first moves the strip plate and the horizontal carrier plate that moves with it to the lowest position of its stroke. Then, the cylinder 25 drives the beam plate to move from the rear end to the front end until the horizontal carrier plate moves to the material tray located between the left and right material distribution blocks. At this time, there is a certain gap between the upper surface of the horizontal carrier plate and the lower surface of the material tray. Then, the vertical cylinder 30 drives the strip plate and the horizontal carrier plate that moves with it to move up until the upper surface of the horizontal carrier plate contacts the lower surface of the material tray, thereby achieving stable connection of the separated material tray, so as to facilitate the feeding unit to pick up the products in the material tray and avoid the material tray being deflected by external forces during the picking process, which would affect the positional accuracy of the products inside the tray.

[0031] The operation process of the material tray unloading unit is similar to that of the material tray loading unit, and will not be described in detail here.

[0032] The feeding unit picks up the products with the coating surface facing down from the feeding unit and transfers them to the flipping unit. After flipping, the products are transferred to the test carrier, so that the coating surface of the products on the test carrier faces up, which is convenient for subsequent testing. The products that have been tested and have their coated surface facing up on the test stand are flipped over again by the flipping unit so that the coated surface faces down. Then, the product with the coated surface facing down is picked up by the unloading unit and placed into the empty tray on the tray unloading unit. The loading and unloading units can use robotic arms in conjunction with vacuum nozzles to pick up, place, and transport products.

[0033] For the flipping unit that works in conjunction with the feeding unit: In use, connect the vacuum channels of each carrier to a vacuum generator or vacuum pump to create negative pressure in the vacuum channels; The rotating plate is driven by a rotary motor to rotate to the first vertical position. At this time, the surface with adsorption holes on the first vacuum carrier faces upward, and the surface with adsorption holes on the second vacuum carrier faces downward. The feeding unit transports the coated products with the coating side down from the tray to the upper surface of the first vacuum carrier, ensuring that each product is directly above the corresponding adsorption hole. The negative pressure generated in the adsorption hole is used to adsorb and position the product. Then, the rotating plate is driven by the rotary motor to rotate 180° to the second vertical position. At this time, the surface of the product held by the adsorption clamp on the first vacuum carrier faces downward, while the surface of the adsorption hole on the second vacuum carrier faces upward. The test carrier is moved to the position directly below the first vacuum carrier by the first horizontal transport module, and then the test carrier is moved up to be close to the first vacuum carrier by the connecting cylinder. Disconnect the vacuum in the first vacuum carrier, so that the product on the first vacuum carrier is transferred to the test carrier accordingly, and flip the product so that the coated surface of the product is facing up for subsequent testing. During the above process, when the suction nozzle of the feeding unit comes into contact with the product on the carrier, the carrier is simultaneously subjected to force to move and compress the spring, thereby buffering, equalizing and absorbing part of the force acting on the product, improving the uniformity of the force on the product, and avoiding damage caused by excessive local force on the product. At the same time, at least one product can be transported to the upper surface of the second vacuum carrier through the feeding unit, and the product can be adsorbed and clamped by the vacuum generated in the adsorption holes on it. Then, the above steps are repeated to flip the product adsorbed on the second vacuum carrier. Efficiency can be improved by alternating operation of the first and second vacuum carriers. The products can also be reversed and transported. The operation process is similar and will not be described in detail.

[0034] The operation of the flipping unit, which works in conjunction with the feeding unit, is similar to the process described above, and will not be repeated here.

[0035] For the test unit: First, the rolled strip of wiping cloth is installed on the cloth feeding module. Then, one end of the wiping cloth is wrapped around one side of the wiping block, the wiping head, and the other side of the wiping block before being installed on the cloth receiving module. After installation, the wiping cloth can be driven by the cloth receiving module to move from the cloth feeding module to the cloth receiving module, so that during the movement, one side surface of the wiping cloth will slide into contact with the liquid outlet area on the wiping block and the outer surface of the wiping head. Liquid (such as alcohol) is injected into the liquid channel on the wiping block through the pipeline. The liquid can overflow from the liquid outlet and soak the wiping cloth wrapped around the wiping block and located outside the liquid outlet. During testing, the product to be tested with the coated surface facing up is moved to the nozzle of the spray valve using the test carrier. The spray valve atomizes the test liquid and sprays it onto the coated surface of the product to be tested, thereby forming fine mist droplets that are evenly distributed on the coated surface. The product to be tested is first moved to a position under the camera using a test carrier. Then, the wiping head on the wiping block drives the taut wiping cloth to wipe the coating surface of the product to be tested, which is covered with fine mist droplets. After wiping, the camera takes pictures to capture image data of the detection liquid that evaporates and dissipates within a certain period of time in the intact coating area and the defective coating area. This completes the capture of the defect morphology and lays the preliminary physical foundation for the accurate recognition of deep learning algorithms. The recognition algorithm for coating defect detection is not within the scope of this patent and will not be described here. Before wiping, move the wipe cloth, which has been moistened with liquid, a very short distance from the outside of the liquid outlet to the outside of the wipe head; During wiping, first move the wiping block above one end of the coated surface of the product to be tested, and then drive the wiping block down so that the wiping cloth wrapped around the outside of the wiping head contacts the coated surface of the product to be tested. Next, the wiping block moves the wiping head and the wiping cloth on its outer side from one end of the coating surface of the product to be tested to the other end. This allows the detection liquid soaked in the wiping cloth and the detection liquid that forms fine mist droplets on the coating surface of the product to be tested to be more evenly and comprehensively coated on the coating surface of the product to be tested. This increases the difference in the evaporation and dissipation state of the detection liquid in the complete coating area and the defective coating area on the coating surface, thereby improving the accuracy of the detection and the comprehensiveness of the detection of defects of various types and areas.

[0036] When using the above-mentioned coating inspection system, it can automatically realize batch loading, unloading, and inspection of products, while protecting the coating surface of the products and avoiding damage caused by exposure during non-inspection processes. Furthermore, by using atomized spraying and wiping of the product with the detection liquid in successive stages, the uniformity and sufficiency of the detection liquid distribution on the product surface are improved. This enhances the consistency of the detection liquid's dissipation on the product surface and the difference in dissipation traces between complete and defective coating areas, thereby improving the accuracy of inspection and the comprehensiveness of defect detection for various types and areas. The evenly and staggeredly arranged liquid outlets near the front end of the wiping head effectively and precisely control the amount of wiping liquid used, ensuring uniform distribution of the liquid with the wiping cloth. This avoids waste and overflow of the wiping liquid and prevents evaporation of the liquid on the wiping cloth, further improving the uniformity and sufficiency of the detection liquid distribution on the product surface after wiping, thus improving the accuracy of the inspection results.

[0037] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A coating inspection system, comprising: The system comprises a first horizontal transport module (201) extending forward and backward, a test carrier (202) mounted on the movable part of the first horizontal transport module (201), a material tray loading unit (300) disposed on the outer side of the front end of the first horizontal transport module (201), a material tray unloading unit (400) disposed on the outer side of the rear end of the first horizontal transport module (201), and a test unit (500) disposed above the test carrier (202), characterized in that: a [missing information - likely a device or structure] is provided between the material tray loading unit (300) and the test carrier (202). A loading unit (600) is provided to transport at least one product (101) in a tray (100) to a test carrier (202). A unloading unit (700) is provided between the test carrier (2) and the tray unloading unit (400) to transport at least one product (101) in the test carrier (202) to the tray (100). A flipping unit (800) is provided between the loading unit (600) and the test carrier (202), and between the test carrier (202) and the unloading unit (700). The test unit (500) further includes: a camera (7) for photographing the product (101), a light source (8) disposed below the camera (7), a spray valve (9), a wiping block (1), a cloth-laying module (61), and a cloth-retrieving module (62). In the moving direction of the test carrier (202), the wiping block (1) is located behind the spray valve (9). A wiping cloth (5) is wrapped around the cloth-laying module (61), the wiping block (1), and the cloth-retrieving module (62). The end of the wiping block (1) is provided with a wiping head (2) for contacting the product (101) on the test carrier (202) through the wiping cloth (5). The area of ​​the wiping block (1) near the wiping head (2) is... At least two groups of liquid outlet holes (3) are provided, which are spaced apart in the direction of movement of the wiping cloth (5). Each group of liquid outlet holes (3) consists of several liquid outlet holes (301) arranged at intervals along the width direction of the wiping cloth (5) and each contacting the wiping cloth (5). The liquid outlet holes (301) in different groups of liquid outlet holes (3) are staggered in the width direction of the wiping cloth (5). The group of liquid outlet holes (3) in the direction of movement of the wiping cloth (5) is located on the side of the wiping head (2) close to the cloth placement module (61). Each of the liquid outlet holes (301) is connected to the liquid flow channel (4) provided in the wiping block (1). The liquid flow channel (4) and the spray valve (9) are each connected to the liquid supply unit through a pipeline.

2. The coating inspection system according to claim 1, characterized in that: The tray loading unit (300) and tray unloading unit (400) each further include: a mounting base plate (11), a left bracket (12) and a right bracket (13) respectively disposed on both sides of the upper surface of the mounting base plate (11), a second horizontal transport module (14) mounted on the upper surface of the mounting base plate (11), and a vertical transport module (15) disposed on the side of the mounting base plate (11) near the first horizontal transport module (201). The movable part of the second horizontal transport module (14) located between the left bracket (12) and the right bracket (13) can move back and forth. The left bracket (12) A left baffle (171) is installed on the side facing the right support (13), and a right baffle (172) is installed on the side facing the left support (12) opposite to the left baffle (171). At least two spaced movable blocks (16) are installed on the movable part of the vertical transport module (15). The horizontal part (162) of the movable block (16) connected to the vertical part (161) and the movable part of the vertical transport module (15) extends between the left baffle (171) and the right baffle (172) and is used to contact the bottom surface of the tray (100).

3. The coating inspection system according to claim 2, characterized in that: A stacking gap (102) is formed at the edge of any two adjacent material trays (100) in a vertically stacked arrangement. A left cylinder (181) is installed on the left support (12) and on the outer side of the upper end of the left baffle (171). A left push plate (19) facing the right baffle (172) is installed on the piston rod of the left cylinder (181). A right cylinder (182) is installed on the right support (13) and on the outer side of the upper end of the right baffle (172). A right push plate (20) facing the left baffle (171) is installed on the piston rod of the right cylinder (182). The left push plate (19) and the right push plate (20) are respectively... At least one left dividing block (21) and right dividing block (22) are installed on the surface opposite to the left cylinder (181) and right cylinder (182) respectively, for contacting the lower surface of the material tray (100) at the edge. A beam plate (23) that can move back and forth in the horizontal direction is installed between the left support (12) and the right support (13). A vertical cylinder (30) is installed on the upper surface of the beam plate (23). A strip plate (31) is installed on the piston rod of the vertical cylinder (30). The rear end of a horizontal carrier plate (24) located between the left baffle (171) and the right baffle (172) is connected to movable blocks (32) installed at both ends of the strip plate (31).

4. The coating inspection system according to claim 3, characterized in that: At least one side push block (27) is movably mounted on the left push plate (19) or right push plate (20) via a guide post (261) and a guide sleeve (262). The side push block (27) that can move left and right is connected to the corresponding left push plate (19) or right push plate (20) by a first spring (28) that extends left and right, so that the side push block (27) can be pressed into contact with the side surface of the tray (100).

5. The coating inspection system according to claim 1, characterized in that: A vertically arranged connecting cylinder (53) is installed on the movable part of the first horizontal transport module (201). The test carrier (202) is installed on the movable part of the connecting cylinder (53). The flipping unit (800) further includes: a first vacuum carrier (441), a second vacuum carrier (442) and a bracket (41) corresponding to the test carrier (202). A rotating plate (43) is rotatably installed on the bracket (41) and connected to the output shaft of a rotary motor (42) installed on the bracket (41). A plurality of adsorption holes (45) are opened on one side surface of the first vacuum carrier (441) and the second vacuum carrier (442). The first vacuum carrier (441) and the second vacuum carrier (442) installed at both ends of the rotating plate (43) are arranged facing each other, and their other side surfaces are opposite each other.

6. The coating inspection system according to claim 5, characterized in that: The first vacuum carrier (441) and the second vacuum carrier (442) are each mounted on the rotating plate (3) opposite to the rotating motor (42) via at least one set of mutually cooperating third slide rails (481) and third sliders (482). The first vacuum carrier (441) and the second vacuum carrier (442) are each provided with a stop block (49) on the side opposite to the adsorption hole (45). The stop block (49) mounted on the rotating plate (43) and the corresponding first vacuum carrier (441) and second vacuum carrier (442) are each provided with a second spring (50) extending along the moving direction of the first vacuum carrier (441) and the second vacuum carrier (442).

7. The coating inspection system according to claim 6, characterized in that: Each of the first vacuum carrier (441) and the second vacuum carrier (442) has a support block (51) installed on the surface facing the stop (49). The support block (51) and the rotating plate (3) are connected by a third slide rail (481) and a third slider (482). The second spring (50) is connected between the support block (51) and the stop (49).

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