PVC color film surface detection equipment and detection method thereof

Abstract

The invention discloses PVC color film surface detection equipment and a detection method thereof, and relates to the technical field of PVC color film surface detection.The PVC color film surface detection equipment comprises a base, a detection mechanism is arranged on the upper side of the base, a first conveying mechanism and a second conveying mechanism are arranged on the two sides of the detection mechanism correspondingly, and the first conveying mechanism comprises a bottom frame; a first supporting plate and a second supporting plate are fixedly connected to the upper side of the bottom frame, a first conveying roller and a second conveying roller are connected between the first supporting plate and the second supporting plate through bearings correspondingly, and after light intensity adjustment of a bulb is finished, a camera carries out shooting imaging on the surface of a PVC color film, the length of broken grains on the surface of the PVC color film is recognized, and therefore the broken grain length of the surface of the PVC color film is obtained. According to the length of the broken lines, the proper spraying length is adjusted through the spraying repairing assembly, spraying repairing is conducted on the broken line area, the phenomenon that too much ink is sprayed to the sprayed lines, and consequently the thicknesses of the lines on the surface of the PVC color film are inconsistent is effectively prevented, and the effect of automatically adjusting the spraying repairing length is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of PVC color film surface detection, and more specifically, to a PVC color film surface detection device and a detection method thereof. Background Art

[0002] PVC color film is a colored film made of PVC (polyvinyl chloride) as raw material. It is usually formed into a film of various colors and patterns by printing or coating on a PVC substrate.

[0003] The texture on the surface of PVC color film is an important appearance feature. Cracks will affect the overall appearance of the product. Through crack detection, these defects can be discovered and handled in time to ensure that the product appearance meets the standards. Cracks may reduce the strength and toughness of the material and affect its durability during use. For example, if there are cracks on PVC color film used for architectural decoration, it may crack or fall off during installation or use.

[0004] Existing PVC color film surface inspection is usually carried out using a camera. When a crack is detected, a nozzle will be used to re-spray ink. Due to the inconsistent length of the cracks, excess ink will be sprayed onto the already sprayed texture during re-spraying, resulting in inconsistent texture thickness on the subsequent PVC color film surface. Inconsistent texture thickness will make the visual effect of the PVC color film uneven, affecting the appearance of the product. Textures with inconsistent thickness may cause the strength and toughness of the material to decrease. During use, thinner areas may be more prone to scratches, cracks or breakage, affecting the durability of the product.

[0005] Therefore, it is necessary to design a PVC color film surface detection device with high detection accuracy and automatic adjustment of the re-spraying length to improve the above-mentioned technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the object of the present invention is to provide a PVC color film surface detection device and a detection method thereof.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a PVC color film surface detection device, comprising a base, a detection mechanism is provided on the upper side of the base, and a first transmission mechanism and a second transmission mechanism are provided on both sides of the detection mechanism.

[0008] The present invention is further configured as follows: the first transmission mechanism includes a base frame, a first support plate and a second support plate are fixedly connected to the upper side of the base frame, a first conveying roller and a second conveying roller are respectively bearing-connected between the first support plate and the second support plate, a motor is fixedly connected to the upper side of the base frame, a reducer is provided on one side of the motor and the reducer is fixedly connected to the base frame, an output end of the motor is fixedly connected to an input end of the reducer, a second gear is fixedly connected to the output end of the reducer, one end of the first conveying roller and the second conveying roller are both fixedly connected to the first gear, and the first gear is meshingly connected to the second gear.

[0009] The present invention is further configured as follows: the detection mechanism includes a detection table, a re-spraying component for re-spraying the cracks in the PVC color film is provided on the upper side of the detection table, a light adjustment component for illuminating the surface of the PVC color film is provided inside the detection table, and a drying component for drying the re-sprayed ink is provided on one side of the re-spraying component.

[0010] The present invention is further configured as follows: the drying component includes two third support plates fixedly connected to the upper side of the detection table, a mounting bracket is fixedly connected between the two third support plates, a ventilation pipe is fixedly connected to the inside of the mounting bracket, electric fans are fixedly connected to the inner sides of the ventilation pipe, a plurality of air outlet holes are provided on the lower side of the ventilation pipe, and a heating pipe is fixedly connected to the inside of the mounting bracket.

[0011] The present invention is further configured as follows: the re-spraying assembly includes two fourth support plates fixedly connected to the upper side of the detection table, a first electric slide rail is fixedly connected between the two fourth support plates, a camera is fixedly connected to the lower side of the first electric slide rail, a slide plate is fixedly connected to the sliding end of the first electric slide rail, a cylinder is fixedly connected to one side of the slide plate, a fixed plate is fixedly connected to the output end of the cylinder, the fixed plate is slidably connected to the slide plate, an ink cartridge is fixedly connected to the upper side of the fixed plate, a nozzle is fixedly connected to the lower side of the fixed plate, the ink cartridge is connected to the nozzle through a pipe, and a length adjustment module for adjusting the length of ink re-spraying is provided below the nozzle.

[0012] By setting up the re-spraying component and the drying component, when there are cracks on the surface of the PVC color film, the first electric slide rail controls the nozzle to slide, and the output end of the cylinder extends to control the nozzle to move downward, thereby controlling the nozzle to re-spray the cracks in different areas of the PVC color film, effectively preventing the cracks on the surface of the PVC color film from being unable to be processed in time, and after the inkjet is completed, the ink-replenishing area is dried in time, effectively preventing the ink from spreading on the surface of the PVC color film, resulting in blurred patterns.

[0013] The present invention is further configured as follows: the length adjustment module includes an ink guide box fixedly connected to the lower side of the nozzle, the output end of the nozzle passes through the ink guide box, one side of the ink guide box is fixedly connected to a double-headed cylinder, the two output ends of the double-headed cylinder are respectively fixedly connected to a first connecting plate and a second connecting plate, the other end of the first connecting plate is fixedly connected to a first connecting rod, one end of the second connecting plate is fixedly connected to a second connecting rod, the other ends of the first connecting rod and the second connecting plate both pass through the ink guide box, the other end of the first connecting rod is fixedly connected to a first limit plate, the other end of the second connecting rod is fixedly connected to a second limit plate, and the second limit plate and the first limit plate are both slidably connected to the interior of the ink guide box.

[0014] After the light intensity of the bulb is adjusted, the camera takes an image of the surface of the PVC color film and identifies the length of the cracks on the surface of the PVC color film. The re-spraying component adjusts the appropriate spray length according to the length of the cracks and re-sprays the crack area, effectively preventing excessive ink from being sprayed onto the already sprayed texture, thereby causing inconsistent texture thickness on the subsequent PVC color film surface, thereby achieving the effect of automatically adjusting the re-spraying length.

[0015] The present invention is further configured as follows: the light adjustment component includes a second electric slide rail fixedly connected to the inside of the detection table, the sliding end of the second electric slide rail is fixedly connected to a guide plate, a plurality of guide grooves are provided inside the guide plate, a third electric slide rail is fixedly connected to one side of the guide plate, and the sliding end of the third electric slide rail is provided with a lifting lamp module.

[0016] The present invention is further configured as follows: the lifting lamp module includes an electric push rod fixedly connected to the sliding end of the third electric slide rail, the output end of the electric push rod is fixedly connected to the first magnetic block, a fixed column is provided inside the guide groove, the lower side of the fixed column is fixedly connected to the second magnetic block, one side of the fixed column is fixedly connected to a light bulb, the lower side of the fixed column is fixedly connected to a support plate, the lower side of the support plate is fixedly connected to a telescopic rod, the lower side of the telescopic rod is fixedly connected to a sliding column, a limiting column is provided on the outer side of the sliding column, the interior of the limiting column is a conical cavity, the upper side of the conical cavity is interference fit with the sliding column, and the lower side of the conical cavity is clearance fit with the sliding column.

[0017] The camera is used to capture images of the surface of the PVC color film, and the distribution color of each area on the surface of the PVC color film is identified. The light adjustment component continuously moves to illuminate the surface of the PVC color film, and automatically adjusts the light intensity of each area according to the color distribution of each area, thereby preventing the phenomenon that the irradiated light intensity cannot be freely adjusted by area when there are multiple areas of different depths on the surface of the PVC color film. This avoids overexposure of light-colored textures, which causes loss of details in light-colored areas, and underexposure of dark-colored textures, which causes unrecognizable details in dark-colored areas, thereby preventing the length of the fracture from being accurately identified, thereby achieving a high accuracy in identifying the length of the fracture on the surface of the PVC color film.

[0018] A detection method of a PVC color film surface detection device, using the above-mentioned PVC color film surface detection device, comprises the following steps: S1: The first transmission mechanism transmits the PVC color film to the inside of the detection mechanism.

[0019] S2: The camera takes an image of the surface of the PVC color film and first identifies the distribution color of each area on the surface of the PVC color film.

[0020] S3: The light adjustment component continuously moves to illuminate the surface of the PVC color film, and automatically adjusts the light intensity of each area according to the color distribution of each area.

[0021] S4: During the lighting process of the light adjustment component, the camera takes an image of the surface of the PVC color film and identifies the length of the cracks on the surface of the PVC color film.

[0022] S5: The supplementary spraying component adjusts the appropriate spraying length according to the length of the fracture and performs supplementary spraying on the fracture area.

[0023] S6: The drying component dries the re-sprayed area, and the second transmission mechanism transmits the PVC color film that has been tested out from the inside of the testing mechanism.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up the re-spraying component and the drying component, when there is a crack on the surface of the PVC color film, the first electric slide rail controls the nozzle to slide, and the output end of the cylinder extends to control the nozzle to move downward, thereby controlling the nozzle to re-spray the cracks in different areas of the PVC color film, effectively preventing the cracks on the surface of the PVC color film from being unable to be processed in time, and after the inkjet is completed, the ink-replenishing area is dried in time, effectively preventing the ink from spreading on the surface of the PVC color film, resulting in blurred patterns.

[0025] 2. The camera is used to capture images of the surface of the PVC color film, and the distribution color of each area on the surface of the PVC color film is identified. The light adjustment component continuously moves to illuminate the surface of the PVC color film, and automatically adjusts the light intensity of each area according to the color distribution of each area. This prevents the phenomenon that the irradiated light intensity cannot be freely adjusted by area when there are multiple areas of different depths on the surface of the PVC color film. It also avoids overexposure of light-colored lines, which causes the loss of details in the light-colored areas, and underexposure of dark-colored lines, which makes the details in the dark-colored areas unrecognizable, thereby resulting in the inability to accurately identify the length of the fracture, thereby achieving a high accuracy in identifying the length of the fracture on the surface of the PVC color film.

[0026] 3. After the light intensity of the bulb is adjusted, the camera takes an image of the surface of the PVC color film and identifies the length of the cracks on the surface of the PVC color film. The re-spraying component adjusts the appropriate spray length according to the length of the cracks and re-sprays the crack area, effectively preventing excessive ink from being sprayed on the already sprayed texture, thereby causing inconsistent texture thickness on the subsequent PVC color film surface, and achieving the effect of automatically adjusting the re-spraying length. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a PVC color film surface detection device of the present invention; Figure 2 It is a structural schematic diagram of the first transmission mechanism in the present invention; Figure 3 It is a structural schematic diagram of the detection mechanism in the present invention; Figure 4 It is a structural schematic diagram of the drying component in the present invention; Figure 5 It is a structural schematic diagram of the supplementary spraying assembly in the present invention; Figure 6 It is a partial cross-sectional schematic diagram of the length adjustment module in the present invention; Figure 7 It is a structural schematic diagram of the light adjustment component in the present invention; Figure 8 It is a partial cross-sectional schematic diagram of the lifting lamp module in the present invention.

[0028] Description of reference numerals: 1. base; 2. First transmission mechanism; 21. Base frame; 22. Motor; 23. First support plate; 24. First conveying roller; 25. Second support plate; 26. Second conveying roller; 27. First gear; 28. Second gear; 29. ​​Speed ​​reducer; 3. The second transmission mechanism; 4. Detection mechanism; 41. Detection table; 42. Light adjustment component; 421. Second electric slide rail; 422. Guide plate; 423. Lifting lamp module; 4231. Fixed column; 4232. Electric push rod; 4233. Light bulb; 4234. Support plate; 4235. Telescopic rod; 4236. Sliding column; 4237. Limiting column; 424. Third electric slide rail; 43. Re-spraying component; 431. Length adjustment module; 4311. First connecting plate; 4312. Ink guide box; 4313. Double-head gas Cylinder; 4314, second connecting plate; 4315, second connecting rod; 4316, second limiting plate; 4317, first limiting plate; 4318, first connecting rod; 432, fourth supporting plate; 433, slide plate; 434, first electric slide rail; 435, cylinder; 436, ink cartridge; 437, camera; 438, fixing plate; 439, nozzle; 44, drying assembly; 441, third supporting plate; 442, electric fan; 443, heating pipe; 444, ventilation pipe; 445, mounting bracket. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0031] See also Figure 1-8 The present invention provides the following technical solutions: A PVC color film surface detection device comprises a base 1, a detection mechanism 4 is arranged on the upper side of the base 1, and a first transmission mechanism 2 and a second transmission mechanism 3 are arranged on both sides of the detection mechanism 4.

[0032] See also Figure 2 The first transmission mechanism 2 includes a base frame 21, a first support plate 23 and a second support plate 25 are fixedly connected to the upper side of the base frame 21, a first conveying roller 24 and a second conveying roller 26 are respectively bearing-connected between the first support plate 23 and the second support plate 25, a motor 22 is fixedly connected to the upper side of the base frame 21, a reducer 29 is provided on one side of the motor 22 and the reducer 29 is fixedly connected to the base frame 21, an output end of the motor 22 is fixedly connected to an input end of the reducer 29, a second gear 28 is fixedly connected to the output end of the reducer 29, one end of the first conveying roller 24 and the second conveying roller 26 are fixedly connected to a first gear 27, and the first gear 27 is meshed with the second gear 28.

[0033] Specifically, the rotation of the output end of the motor 22 is used to control the output end of the reducer 29 to rotate, thereby driving the second gear 28 to rotate, and then driving the two first gears 27 to rotate, and the first conveying roller 24 and the second conveying roller 26 transmit the PVC color film to the inside of the detection mechanism 4.

[0034] See also Figure 3 The detection mechanism 4 includes a detection table 41, and a re-spraying component 43 for re-spraying the cracks in the PVC color film is provided on the upper side of the detection table 41. A light adjustment component 42 for illuminating the surface of the PVC color film is provided inside the detection table 41. A drying component 44 for drying the re-sprayed ink is provided on one side of the re-spraying component 43.

[0035] See also Figure 4 The drying component 44 includes two third support plates 441 fixedly connected to the upper side of the detection table 41, a mounting frame 445 is fixedly connected in the middle of the two third support plates 441, a ventilation pipe 444 is fixedly connected inside the mounting frame 445, electric fans 442 are fixedly connected to the inner sides of the ventilation pipe 444, a plurality of air outlets are provided on the lower side of the ventilation pipe 444, and a heating pipe 443 is fixedly connected inside the mounting frame 445.

[0036] Specifically, when the ink filling of the broken area of ​​the PVC color film is completed, the electric fan 442 is turned on, the heating tube 443 is started, and the wind is sucked into the interior of the ventilation tube 444 to form an airflow. The airflow flows out through the air outlet and passes through the heating tube 443. At this time, the cold air is heated into hot air and blown toward the position where the broken area of ​​the PVC color film is filled with ink, thereby drying the liquid ink.

[0037] See also Figure 5 The re-spraying assembly 43 includes two fourth support plates 432 fixedly connected to the upper side of the detection table 41, a first electric slide rail 434 fixedly connected in the middle of the two fourth support plates 432, a camera 437 fixedly connected to the lower side of the first electric slide rail 434, a slide plate 433 fixedly connected to the sliding end of the first electric slide rail 434, a cylinder 435 fixedly connected to one side of the slide plate 433, a fixed plate 438 fixedly connected to the output end of the cylinder 435, the fixed plate 438 is slidably connected to the slide plate 433, an ink cartridge 436 is fixedly connected to the upper side of the fixed plate 438, a nozzle 439 is fixedly connected to the lower side of the fixed plate 438, the ink cartridge 436 is connected to the nozzle 439 via a pipeline, and a length adjustment module 431 for adjusting the ink re-spraying length is provided below the nozzle 439.

[0038] Specifically, the camera 437 is used to capture images of the surface of the PVC color film, the nozzle 439 is used to extract the ink from the ink cartridge 436 and then spray the ink into the length adjustment module 431, the first electric slide rail 434 is used to control the nozzle 439 to slide, thereby replenishing the fractures in different areas of the PVC color film, and the extension of the output end of the cylinder 435 is used to control the nozzle 439 to move downward, thereby replenishing ink close to the area of ​​the PVC color film that needs ink replenishment.

[0039] By setting up the re-spraying component 43 and the drying component 44, when there are cracks on the surface of the PVC color film, the first electric slide rail 434 controls the nozzle 439 to slide, and the output end of the cylinder 435 extends to control the nozzle 439 to move downward, thereby controlling the nozzle 439 to re-spray the cracks in different areas of the PVC color film, effectively preventing the cracks on the surface of the PVC color film from being unable to be processed in time, and after the inkjet is completed, the ink-supplemented area is dried in time, effectively preventing the ink from spreading on the surface of the PVC color film, resulting in blurred patterns.

[0040] Embodiment 2: Due to the different shades of color on the surface of PVC color film, different colors of PVC color film have different reflectivity to light. The dark surface has low reflectivity and strong light absorption ability, while the light surface has high reflectivity and weak light absorption ability. Therefore, in order to ensure that the detection equipment can accurately capture the details of the surface, it is necessary to adjust the intensity of the irradiation light according to the depth of the color. If the intensity of the irradiation light is not appropriate, it may cause the detection image to be overexposed or underexposed. Overexposure will cause the details of the light area to be lost, and underexposure will make the details of the dark area unrecognizable. Therefore, the following structure is designed to solve the above technical problems.

[0041] The light adjustment component 42 includes a second electric slide rail 421 fixedly connected to the inside of the detection table 41, the sliding end of the second electric slide rail 421 is fixedly connected to a guide plate 422, a plurality of guide grooves are provided inside the guide plate 422, a third electric slide rail 424 is fixedly connected to one side of the guide plate 422, and a lifting lamp module 423 is provided at the sliding end of the third electric slide rail 424.

[0042] Specifically, the sliding of the sliding end of the second electric slide rail 421 is used to control the sliding of the lifting lamp module 423, so as to illuminate each area on the surface of the PVC color film.

[0043] The lifting lamp module 423 includes an electric push rod 4232 fixedly connected to the sliding end of the third electric slide rail 424, the output end of the electric push rod 4232 is fixedly connected to the first magnetic block, a fixed column 4231 is provided inside the guide groove, the lower side of the fixed column 4231 is fixedly connected to the second magnetic block, one side of the fixed column 4231 is fixedly connected to the light bulb 4233, the lower side of the fixed column 4231 is fixedly connected to the support plate 4234, the lower side of the support plate 4234 is fixedly connected to the telescopic rod 4235, the lower side of the telescopic rod 4235 is fixedly connected to the sliding column 4236, a limiting column 4237 is provided on the outer side of the sliding column 4236, the interior of the limiting column 4237 is a conical cavity, the upper part of the conical cavity is interference fit with the sliding column 4236, and the lower part of the conical cavity is clearance fit with the sliding column 4236.

[0044] Specifically, the extension and retraction of the output end of the electric push rod 4232 is used to control the first magnetic block to move up and down. When the light bulb 4233 needs to be close to the PVC color film, the output end of the electric push rod 4232 extends to control the second magnetic block to move upward. The first magnetic block and the second magnetic block are not powered and are in a closed state. The first magnetic block supports the second magnetic block to move the fixed column 4231 upward, thereby driving the light bulb 4233 to move upward. Due to the interference fit between the upper part of the conical cavity and the sliding column 4236, the sliding column 4236 is stuck on the upper part of the inner wall of the conical cavity. The friction between the sliding column 4236 and the inner wall of the conical cavity is greater than the gravity of the sliding column 4236. When the electric push rod 4232 slides away, the sliding column 4236 will not fall down due to gravity.

[0045] When the light bulb needs to be away from the PVC color film, the first magnetic block and the second magnetic block are powered on and are in the open state, the first magnetic block and the second magnetic block attract each other, and the output end of the electric push rod 4232 is completely retracted. Since the magnetic attraction force of the first magnetic block and the second magnetic block is greater than the friction force between the sliding column 4236 and the inner wall of the conical cavity, the first magnetic block pulls the second magnetic block to move downward, thereby driving the sliding column 4236 to slide downward, and then driving the light bulb 4233 to move downward. When the electric push rod 4232 needs to slide away, the first magnetic block and the second magnetic block are powered off.

[0046] The sliding of the sliding end of the third electric slide rail 424 is used to control the electric push rod 4232 to move, so as to reach the position of each lifting lamp module 423 and control each light bulb 4233 to move up or down.

[0047] The camera 437 is provided with a judgment module and a database inside. The database is provided with identification photos of different colors of each area of ​​the PVC color film and identification photos of different lengths of cracks on the surface of the PVC color film. The camera 437 first takes an image of the surface of the PVC color film, and compares it with the identification photos of different colors of each area of ​​the PVC color film in the internal database. Then, the color of each area of ​​the PVC color film is identified, and based on the obtained photos of the PVC color film surface, the colors of the photographed areas on the surface of the PVC color film are divided into four color distribution situations: all dark and all light, light front and dark back, and dark front and light back.

[0048] When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is all dark, the sliding of the sliding end of the third electric slide rail 424 is used to control the movement of the electric push rod 4232, so as to reach the position of each lifting light module 423 in turn. Every time it reaches the position of one of the lifting light modules 423, the output end of the electric push rod 4232 extends to control the second magnetic block to move upward. The first magnetic block and the second magnetic block are powered off and are in a closed state. The first magnetic block supports the second magnetic block to move the fixed column 4231 upward, thereby driving the bulb 4233 to move upward. At this time, the dark area on the surface of the PVC color film is closely illuminated by the bulb 4233, the light intensity is increased, and the dark lines on the surface of the PVC color film can be seen more clearly, which effectively prevents the dark lines from being underexposed, making the details of the dark area unrecognizable, and causing the length of the broken lines to be unable to be accurately identified.

[0049] When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is all light color, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting light module 423 in turn. Every time it reaches the position of one of the lifting light modules 423, the output end of the electric push rod 4232 extends, and the first magnetic block and the second magnetic block are energized and in the open state. The first magnetic block and the second magnetic block are attracted to each other, and the output end of the electric push rod 4232 is completely retracted again, and the first magnetic block pulls the second magnetic block to move downward, thereby driving the slide column 4236 to slide downward, and then driving the bulb 4233 to move downward. At this time, the dark area on the surface of the PVC color film is away from the irradiation of the bulb 4233, and the light intensity is reduced, so that the light-colored lines on the surface of the PVC color film can be seen more clearly, which effectively prevents the light-colored lines from being overexposed, causing the details of the light-colored area to be lost, and resulting in the phenomenon that the length of the broken lines cannot be accurately identified.

[0050] When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is light in the front and dark in the back, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting lamp module 423 in turn, the first magnetic block and the second magnetic block are energized, and the output end of the electric push rod 4232 retracts to control each bulb 4233 to move downward. At this time, each bulb 4233 in the front of the PVC color film is away from the PVC color film, until the sliding end of the third electric slide rail 424 slides to half of the stroke, the first magnetic block and the second magnetic block are powered off, and each time the electric push rod 4232 reaches the position of a lifting lamp module 423, the output end of the electric push rod 4232 extends to control each bulb 4233 to move upward, until the sliding end of the third electric slide rail 424 slides all the strokes, at which time each bulb 4233 in the back of the PVC color film is close to the PVC color film.

[0051] When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is dark in the front and light in the back, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting lamp module 423 in turn, the first magnetic block and the second magnetic block are powered on, and the output end of the electric push rod 4232 extends to control each bulb 4233 to move upward. At this time, each bulb 4233 in front of the PVC color film is close to the PVC color film, until the sliding end of the third electric slide rail 424 slides to half of the stroke, the first magnetic block and the second magnetic block are powered on, and each time the electric push rod 4232 reaches the position of a lifting lamp module 423, the output end of the electric push rod 4232 retracts to control each bulb 4233 to move downward, until the sliding end of the third electric slide rail 424 slides all the strokes, at which time each bulb 4233 in front of the PVC color film is away from the PVC color film.

[0052] The camera 437 is used to capture an image of the surface of the PVC color film, and the distribution color of each area on the surface of the PVC color film is identified. The light adjustment component 42 continues to move to illuminate the surface of the PVC color film, and automatically adjusts the lighting intensity of each area according to the distribution color of each area, thereby preventing the phenomenon that the irradiated light intensity cannot be freely adjusted by area when there are multiple areas of different depths on the surface of the PVC color film, thereby avoiding overexposure of light-colored lines, resulting in loss of details in the light-colored areas, and underexposure of dark-colored lines, resulting in unrecognizable details in the dark-colored areas, thereby resulting in the inability to accurately identify the length of the fracture, thereby achieving the effect of high accuracy in identifying the length of the fracture on the surface of the PVC color film.

[0053] Embodiment three, the existing PVC color film surface detection is usually carried out using a camera 437. When a crack is detected, a nozzle 439 is used to re-spray ink. Due to the inconsistent lengths of the cracks, when re-spraying, too much ink will be sprayed onto the already sprayed texture, resulting in inconsistent texture thickness on the subsequent PVC color film surface. Inconsistent texture thickness will make the visual effect of the PVC color film uneven, affecting the aesthetics of the product, and textures with inconsistent thickness may cause the strength and toughness of the material to decrease. During use, thinner areas may be more prone to scratches, cracks or breakage, affecting the durability of the product. Therefore, the following structure is designed to solve the above technical problems.

[0054] The length adjustment module 431 includes an ink guide box 4312 fixedly connected to the lower side of the nozzle 439, the output end of the nozzle 439 passes through the ink guide box 4312, one side of the ink guide box 4312 is fixedly connected with a double-headed cylinder 4313, the two output ends of the double-headed cylinder 4313 are respectively fixedly connected with a first connecting plate 4311 and a second connecting plate 4314, the other end of the first connecting plate 4311 is fixedly connected with a first connecting rod 4318, one end of the second connecting plate 4314 is fixedly connected with a second connecting rod 4315, the other ends of the first connecting rod 4318 and the second connecting plate 4314 both pass through the ink guide box 4312, the other end of the first connecting rod 4318 is fixedly connected with a first limit plate 4317, the other end of the second connecting rod 4315 is fixedly connected with a second limit plate 4316, the second limit plate 4316 and the first limit plate 4317 are both slidably connected to the inside of the ink guide box 4312.

[0055] Specifically, the ink sprayed by the nozzle 439 will enter the interior of the ink guide box 4312, and the extension and retraction of the two output ends of the double-head cylinder 4313 are used to control the first limit plate 4317 and the second limit plate 4316 to move closer or farther away from each other, thereby adjusting the length of the fracture that needs to be re-sprayed. While the first limit plate 4317 and the second limit plate 4316 are moving, the solidified ink on the inner wall of the ink guide box 4312 can be scraped off to prevent the solidified ink from protruding and affecting the range of ink sprayed by the nozzle 439.

[0056] After the light intensity adjustment of the bulb 4233 is completed, the camera 437 takes an image of the PVC color film surface, compares it with the identification photos of different lengths of cracks on the PVC color film surface in the internal database, and then identifies the length of each crack of the PVC color film, and takes photos of the PVC color film surface based on the obtained photos. The lengths of the cracks on the PVC color film surface are divided into two spraying length ranges: long cracks and short cracks.

[0057] When the camera 437 determines that the length of the fracture captured on the surface of the PVC color film is a long fracture, the output end of the ink guide box 4312 is fully extended. At this time, the first limit plate 4317 and the second limit plate 4316 are separated from each other, and the spraying range of the nozzle 439 is increased, so that the long fracture area can be re-sprayed and filled at one time, preventing the nozzle 439 from re-spraying a large range of fractures for multiple times, thereby reducing the re-spraying efficiency.

[0058] When the camera 437 determines that the length of the captured fault on the surface of the PVC color film is a short fault, the output end of the ink guide box 4312 retracts to half of the stroke. At this time, the first limit plate 4317 and the second limit plate 4316 are close to each other, and the spraying range of the nozzle 439 is reduced. The short fault area can be supplemented and filled in a small range to prevent the nozzle 439 from spraying too large a range. Excess ink will be sprayed onto the already sprayed texture, thereby resulting in inconsistent texture thickness on the subsequent PVC color film surface.

[0059] After the light intensity of the bulb 4233 is adjusted, the camera 437 takes an image of the surface of the PVC color film to identify the length of the cracks on the surface of the PVC color film. The re-spraying component 43 adjusts the appropriate spray length according to the length of the cracks and re-sprays the crack area, effectively preventing excessive ink from being sprayed onto the already sprayed texture, thereby causing inconsistent texture thickness on the subsequent PVC color film surface, thereby achieving the effect of automatically adjusting the re-spraying length.

[0060] Embodiment 4, a detection method of a PVC color film surface detection device, using the above-mentioned PVC color film surface detection device, comprises the following steps: S1: The first transmission mechanism 2 transmits the PVC color film to the inside of the detection mechanism 4.

[0061] S2: The camera 437 takes an image of the surface of the PVC color film and first identifies the distribution color of each area on the surface of the PVC color film.

[0062] The more specific steps of S2 are, S21: the camera 437 is provided with a judgment module and a database, and the database is provided with identification photos of different colors of each area of ​​the PVC color film and identification photos of different lengths of cracks on the surface of the PVC color film. The camera 437 first takes an image of the surface of the PVC color film, and compares it with the identification photos of different colors of each area of ​​the PVC color film in the internal database, and then identifies the color of each area of ​​the PVC color film, and based on the obtained photos of the PVC color film surface, divides the color of the photographed area on the surface of the PVC color film into four color distribution situations: all dark and all light, light front and dark back, and dark front and light back.

[0063] S3: The light adjustment component 42 continuously moves to illuminate the surface of the PVC color film, and automatically adjusts the light intensity of each area according to the color distribution of each area.

[0064] The more specific step of S3 is, S31: when the camera 437 determines that the color of the shooting area on the surface of the PVC color film is all dark, the sliding of the sliding end of the third electric slide rail 424 is used to control the movement of the electric push rod 4232, so as to reach the position of each lifting light module 423 in turn. Every time the position of one of the lifting light modules 423 is reached, the output end of the electric push rod 4232 extends to control the second magnetic block to move upward, the first magnetic block and the second magnetic block are powered off and in a closed state, the first magnetic block supports the second magnetic block, so that the fixed column 4231 moves upward, thereby driving the light bulb 4233 to move upward. At this time, the dark area on the surface of the PVC color film is closely illuminated by the light bulb 4233.

[0065] S32: When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is all light color, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting light module 423 in turn. Every time the position of one of the lifting light modules 423 is reached, the output end of the electric push rod 4232 extends out, and the first magnetic block and the second magnetic block are energized and in the open state. The first magnetic block and the second magnetic block are attracted to each other, and the output end of the electric push rod 4232 is completely retracted again, and the first magnetic block pulls the second magnetic block to move downward, thereby driving the sliding column 4236 to slide downward, and then driving the light bulb 4233 to move downward. At this time, the dark area on the surface of the PVC color film is away from the light bulb 4233.

[0066] S33: When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is light in the front and dark in the back, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting lamp module 423 in turn, the first magnetic block and the second magnetic block are energized, and the output end of the electric push rod 4232 retracts to control each bulb 4233 to move downward. At this time, each bulb 4233 in the front of the PVC color film is away from the PVC color film, until the sliding end of the third electric slide rail 424 slides to half of the stroke, the first magnetic block and the second magnetic block are powered off, and each time the electric push rod 4232 reaches the position of a lifting lamp module 423, the output end of the electric push rod 4232 extends to control each bulb 4233 to move upward, until the sliding end of the third electric slide rail 424 slides all the strokes, at which time each bulb 4233 in the back of the PVC color film is close to the PVC color film.

[0067] S34: When the camera 437 determines that the color of the shooting area on the surface of the PVC color film is dark in the front and light in the back, the sliding end of the third electric slide rail 424 slides to control the electric push rod 4232 to move, so as to reach the position of each lifting lamp module 423 in turn, the first magnetic block and the second magnetic block are powered on, and the output end of the electric push rod 4232 extends to control each bulb 4233 to move upward. At this time, each bulb 4233 in front of the PVC color film is close to the PVC color film, until the sliding end of the third electric slide rail 424 slides to half of the stroke, the first magnetic block and the second magnetic block are powered on, and each time the electric push rod 4232 reaches the position of a lifting lamp module 423, the output end of the electric push rod 4232 retracts to control each bulb 4233 to move downward, until the sliding end of the third electric slide rail 424 slides all the strokes, at which time each bulb 4233 in front of the PVC color film is away from the PVC color film.

[0068] S4: During the lighting process of the light adjustment component 42, the camera 437 takes an image of the surface of the PVC color film and identifies the length of the cracks on the surface of the PVC color film.

[0069] The more specific step of S4 is, S41: after the light intensity adjustment of the bulb 4233 is completed, the camera 437 takes an image of the PVC color film surface, compares it with the identification photos of different lengths of cracks on the PVC color film surface in the internal database, and then identifies the length of each crack of the PVC color film, and takes photos of the PVC color film surface based on the obtained photos, and divides the length of the cracks on the PVC color film surface into two types of re-spraying length ranges: long cracks and short cracks.

[0070] S5: The supplementary spraying component 43 adjusts the appropriate spraying length according to the length of the fracture and performs supplementary spraying on the fracture area.

[0071] The more specific step of S5 is, S51: when the camera 437 determines that the length of the fracture captured on the surface of the PVC color film is a long fracture, the output end of the ink guide box 4312 is fully extended. At this time, the first limit plate 4317 and the second limit plate 4316 are separated from each other, and the spraying range of the nozzle 439 is increased, so that the long fracture area can be re-sprayed and filled at one time.

[0072] S52: When the camera 437 determines that the length of the fracture captured on the surface of the PVC color film is a short fracture, the output end of the ink guide box 4312 retracts to half of the stroke. At this time, the first limit plate 4317 and the second limit plate 4316 are close to each other, and the spraying range of the nozzle 439 is reduced, so that the short fracture area can be supplemented and filled in a small range.

[0073] S6: the drying component 44 dries the re-sprayed area, and the second transmission mechanism 3 transmits the PVC color film after the inspection out of the inspection mechanism 4.

[0074] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A PVC color film surface detection device, characterized in that: It comprises a base (1), a detection mechanism (4) is provided on the upper side of the base (1), and a first transmission mechanism (2) and a second transmission mechanism (3) are respectively provided on both sides of the detection mechanism (4); The detection mechanism (4) comprises a detection table (41), the upper side of the detection table (41) is provided with a re-spraying component (43) for re-spraying cracks on the PVC color film, the interior of the detection table (41) is provided with a light adjustment component (42) for illuminating the surface of the PVC color film, and one side of the re-spraying component (43) is provided with a drying component (44) for drying the re-sprayed ink; The re-spraying assembly (43) comprises two fourth support plates (432) fixedly connected to the upper side of the detection table (41); a first electric slide rail (434) is fixedly connected between the two fourth support plates (432); a camera (437) is fixedly connected to the lower side of the first electric slide rail (434); a slide plate (433) is fixedly connected to the sliding end of the first electric slide rail (434); a cylinder (435) is fixedly connected to one side of the slide plate (433); a fixed plate (438) is fixedly connected to the output end of the cylinder (435); the fixed plate (438) is slidably connected to the slide plate (433); an ink cartridge (436) is fixedly connected to the upper side of the fixed plate (438); a nozzle (439) is fixedly connected to the lower side of the fixed plate (438); the ink cartridge (436) and the nozzle (439) are connected via a pipeline; and a length adjustment module (431) for adjusting the length of ink re-spraying is provided below the nozzle (439).

2. The PVC color film surface detection device according to claim 1, characterized in that: The first transmission mechanism (2) comprises a base frame (21), a first support plate (23) and a second support plate (25) are fixedly connected to the upper side of the base frame (21), a first conveying roller (24) and a second conveying roller (26) are respectively bearing-connected between the first support plate (23) and the second support plate (25), a motor (22) is fixedly connected to the upper side of the base frame (21), a reducer (29) is provided on one side of the motor (22), and the reducer (29) is fixedly connected to the base frame (21).

3. The PVC color film surface detection device according to claim 2, characterized in that: The output end of the motor (22) is fixedly connected to the input end of the reducer (29), the output end of the reducer (29) is fixedly connected to a second gear (28), one end of each of the first conveying roller (24) and the second conveying roller (26) is fixedly connected to a first gear (27), and the first gear (27) is meshingly connected to the second gear (28).

4. The PVC color film surface detection device according to claim 1, characterized in that: The drying component (44) comprises two third support plates (441) fixedly connected to the upper side of the detection table (41); a mounting frame (445) is fixedly connected between the two third support plates (441); a ventilation pipe (444) is fixedly connected inside the mounting frame (445); electric fans (442) are fixedly connected to the two sides inside the ventilation pipe (444); a plurality of air outlets are provided on the lower side of the ventilation pipe (444); and a heating pipe (443) is fixedly connected inside the mounting frame (445).

5. The PVC color film surface detection device according to claim 1, characterized in that: The length adjustment module (431) comprises an ink guide box (4312) fixedly connected to the lower side of the nozzle (439); the output end of the nozzle (439) passes through the ink guide box (4312); one side of the ink guide box (4312) is fixedly connected to a double-headed cylinder (4313); two output ends of the double-headed cylinder (4313) are respectively fixedly connected to a first connecting plate (4311) and a second connecting plate (4314); the other end of the first connecting plate (4311) is fixedly connected to a first connecting rod (4318).

6. The PVC color film surface detection device according to claim 5, characterized in that: One end of the second connecting plate (4314) is fixedly connected to the second connecting rod (4315), the other ends of the first connecting rod (4318) and the second connecting plate (4314) both pass through the ink guide box (4312), the other end of the first connecting rod (4318) is fixedly connected to the first limiting plate (4317), the other end of the second connecting rod (4315) is fixedly connected to the second limiting plate (4316), and the second limiting plate (4316) and the first limiting plate (4317) are both slidably connected to the inside of the ink guide box (4312).

7. The PVC color film surface detection device according to claim 1, characterized in that: The light adjustment component (42) includes a second electric slide rail (421) fixedly connected to the inside of the detection table (41); the sliding end of the second electric slide rail (421) is fixedly connected to a guide plate (422); a plurality of guide grooves are provided inside the guide plate (422); a third electric slide rail (424) is fixedly connected to one side of the guide plate (422); and a lifting lamp module (423) is provided at the sliding end of the third electric slide rail (424).

8. The PVC color film surface detection device according to claim 7, characterized in that: The lifting lamp module (423) comprises an electric push rod (4232) fixedly connected to the sliding end of the third electric slide rail (424); the output end of the electric push rod (4232) is fixedly connected to a first magnetic block; a fixing column (4231) is provided inside the guide groove; the lower side of the fixing column (4231) is fixedly connected to a second magnetic block; one side of the fixing column (4231) is fixedly connected to a light bulb (4233); and the lower side of the fixing column (4231) is fixedly connected to a support plate (4234).

9. The PVC color film surface detection device according to claim 8, characterized in that: A telescopic rod (4235) is fixedly connected to the lower side of the support plate (4234), a sliding column (4236) is fixedly connected to the lower side of the telescopic rod (4235), a limiting column (4237) is provided on the outer side of the sliding column (4236), the interior of the limiting column (4237) is a conical cavity, the upper part of the conical cavity is interference fit with the sliding column (4236), and the lower part of the conical cavity is clearance fit with the sliding column (4236).

10. A detection method of a PVC color film surface detection device, using a PVC color film surface detection device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The first transmission mechanism (2) transmits the PVC color film to the inside of the detection mechanism (4); S2: The camera (437) takes an image of the surface of the PVC color film and first identifies the distribution color of each area on the surface of the PVC color film; S3: The light adjustment component (42) continuously moves to illuminate the surface of the PVC color film, and automatically adjusts the light intensity of each area according to the color distribution of each area; S4: During the lighting process of the light adjustment component (42), the camera (437) takes an image of the surface of the PVC color film and identifies the length of the cracks on the surface of the PVC color film; S5: the supplementary spraying component (43) adjusts the appropriate spraying length according to the length of the fracture, and performs supplementary spraying on the fracture area; S6: The drying component (44) further dries the re-sprayed area, and the second transmission mechanism (3) transmits the PVC color film that has been tested out from the inside of the testing mechanism (4).

Images