A visual inspection device for the production of self-adhesive label paper

Abstract

The present invention discloses a visual inspection device for producing self-adhesive label paper, which relates to the technical field of visual inspection of label paper, and comprises an inspection table and a leveling device, wherein a winding device is arranged on the top of the inspection table, a maintenance frame is fixedly installed on the top of the inspection table, a visual inspection device is fixedly penetrated on the top of the maintenance frame, a driving plate is fixedly installed on the top of the inspection table, a servo motor is fixedly installed on the front side of the driving plate, a placement frame is fixedly installed on the top of the inspection table, a rotating motor is rotatably installed on the rear side of the placement frame, a fill light device is fixedly installed on the output end of the rotating motor, a correction rod moves in a direction close to the label paper to drive the correction frame to move and perform position correction on the label paper to be inspected, and the position correction ensures that the label paper is in a correct and centered position during inspection, thereby improving the accuracy of image capture and further reducing the scrap rate caused by misjudgment.

Description

Technical Field

[0001] The invention relates to the technical field of visual inspection of label paper, in particular to a visual inspection device for producing self-adhesive label paper. Background Art

[0002] The visual inspection device for the production of self-adhesive label paper usually consists of a camera, a lighting system, a control device and a protective device.

[0003] The patent with patent announcement number CN218726739U relates to a visual inspection device for label paper production, which relates to the technical field of visual inspection devices for label paper, including a base, a support plate fixed to the top of the base, a through slot opened inside the support plate, and a rotating shaft installed inside the through slot. The visual inspection device for label paper production can make two movable rollers move towards or away from each other by rotating the handle forward or reverse, so that the label paper can be in a taut state, ensuring that the label paper collection point can continue to ensure horizontal movement, ensuring the quality of industrial camera collection, and the angle of the fill light can be adjusted by moving the screw rod, and the adjusted position can be fixed by the locking nut, so that the best fill light angle can be found, ensuring the quality of image collection and the accuracy of detection.

[0004] In the above patent, the angle of the fill light can be adjusted by moving the screw rod, and the adjusted position can be fixed by the locking nut, so that the best fill light angle can be found, ensuring the quality of image acquisition and the accuracy of detection. However, it is difficult to flatten the label paper, and the wrinkles of the label paper will cause distortion of the visual inspection equipment during image capture, thereby affecting the accuracy of defect identification. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a visual inspection device for the production of self-adhesive label paper, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a visual inspection device for the production of self-adhesive label paper, comprising a detection table and a leveling device, wherein a winding device is arranged on the top of the detection table, a maintenance frame is fixedly installed on the top of the detection table, a visual inspection device is fixedly passed through the top of the maintenance frame, a driving plate is fixedly installed on the top of the detection table, a servo motor is fixedly installed on the front side of the driving plate, a placement frame is fixedly installed on the top of the detection table, a rotating motor is rotatably installed on the rear side of the placement frame, a fill light device is fixedly installed on the output end of the rotating motor, wherein the leveling device The device includes a leveling rod, a rotating rod, an extruding rod, an L-shaped rod, a correction rod, a correction frame, a linkage block and a stabilizing hole. The correction rod moves in a direction close to the label paper to drive the correction frame to move to correct the position of the label paper to be detected. The leveling rod is fixedly installed on the output end of the servo motor, the rotating rod is rotatably installed on the inner wall of the placement frame, the extruding rod is fixedly installed on the circumferential surface of the leveling rod, the L-shaped rod slides through the front side of the placement frame, the correction rod is fixedly installed on the circumferential surface of the L-shaped rod, the correction frame is fixedly installed on the rear side of the correction rod, the linkage block is fixedly installed on the top of the correction rod, and the stabilizing hole is opened on the surface of the placement frame.

[0007] According to the above technical solution, a No. 1 spring is arranged between the L-shaped rod and the placement frame, and the No. 1 spring can drive the L-shaped rod to reset. The front end of the correction rod is arranged as an inclined surface, and the correction rod contacts the inner wall of the stabilizing hole.

[0008] According to the above technical solution, the correction frame is elastic, the leveling rod and the rotating rod are located on the same horizontal plane as the winding device, the end of the extrusion rod away from the leveling rod is set as an inclined plane, the extrusion rod rotates counterclockwise to contact the correction rod and squeeze the correction rod. There are two groups of extrusion rods, L-shaped rods, correction rods, correction frames, linkage blocks and stabilizing holes, and in the other group the correction frame is fixedly installed on the front side of the correction rod.

[0009] According to the above technical solution, a cleaning device for scraping off stains on the surface of the label paper is provided on the inner wall of the placement frame, and an adjusting device is provided on the top of the placement frame. The cleaning device includes a load-bearing plate, a load-bearing hole, a support plate, a support rod, a support frame, a scraper rod and a fixed frame. The support rod moves and resets to drive the support frame and the scraper rod to move and reset. The scraper rod reciprocates horizontally to slightly scrape the stains on the top of the label paper. The load-bearing plate is fixedly installed on the inner wall of the placement frame, the load-bearing hole is provided on the surface of the load-bearing plate, the support plate is fixedly installed on the inner wall of the load-bearing hole, the support rod slides through the left and right walls of the support plate, the support frame is fixedly installed at both ends of the support rod, the scraper rod is fixedly installed at the bottom of the support frame, and the fixed frame is fixedly installed on the circumferential surface of the support rod.

[0010] According to the above technical solution, a No. 2 spring is arranged between the support plate and the support rod, and the No. 2 spring can drive the support rod to reset. The scraper rod is elastic, and one end of the support frame close to the leveling rod is set as an inclined surface.

[0011] According to the above technical solution, the adjustment device includes a detection frame, a detection plate, a detection rod, a connecting rod, a gear, a limit frame, a limit plate, a limit rod and an elastic telescopic block. The gear is limited by the limit rod so that the connecting rod cannot rotate. The connection rod cannot rotate so that the fill light device cannot adjust the fill light angle during the label paper detection process. The detection frame is fixedly installed on the right side of the placement frame, the detection plate is slidably installed on the inner wall of the detection frame, the detection rod is fixedly installed on the rear side of the detection plate, the connecting rod is fixedly installed on the front side of the fill light device, the gear is fixedly installed on the circumferential surface of the connecting rod, the limit frame is fixedly passed through the top of the placement frame, the limit plate is slidably installed on the inner wall of the limit frame, the limit rod is fixedly installed on the top of the limit plate, the elastic telescopic block is fixedly installed on the front side of the placement frame, a limit groove is provided on the right side of the limit rod, and a hose is provided between the detection frame and the limit frame.

[0012] According to the above technical solution, one end of the detection rod close to the support frame is set as an inclined surface, and a No. 3 spring is set between the detection frame and the detection plate. One end of the No. 3 spring is set on the inner wall of the detection frame and the other end is set on the front side of the detection plate. The detection plate can be reset by the No. 3 spring, and the free end of the elastic telescopic block is in contact with the limit rod.

[0013] According to the above technical solution, liquid is set inside the detection frame, liquid is set inside the limit frame, the top of the limit rod is set as an inclined surface, and the liquid inside the detection frame is squeezed by the detection plate and enters the limit frame through the hose.

[0014] The present invention provides a visual inspection device for the production of self-adhesive label paper. It has the following beneficial effects:

[0015] (1) The visual inspection device for the production of self-adhesive label paper drives the leveling rod to rotate counterclockwise through the synchronous operation of the servo motor. The rotation of the leveling rod cooperates with the rotating rod to squeeze and level the label paper. By leveling the label paper, the visual inspection equipment can capture clearer images, thereby improving recognition accuracy and reducing missed detection or misjudgment caused by wrinkles. The correction rod moves in the direction close to the label paper to drive the correction frame to move to correct the position of the label paper to be inspected. Through position correction, it is ensured that the label paper is in the correct center position during inspection, thereby improving the accuracy of image capture and further reducing the scrap rate caused by misjudgment.

[0016] (2) The visual inspection device for the production of self-adhesive label paper drives the support frame and the scraper rod to move and reset by moving the support rod. The scraper rod reciprocates horizontally to slightly scrape the stains on the top of the label paper. The slight scraping can effectively remove the stains on the surface of the label paper, ensure the cleanness of the label surface, and improve the inspection quality. The vibration of the fixed frame drives the support rod and the support frame to vibrate, and the vibration of the support frame drives the scraper rod to resonate together. The resonant state can increase the pressure of the scraper rod on the surface of the label paper, making it easier to remove the stains, thereby improving the cleaning effect and further improving the inspection accuracy of the visual inspection equipment.

[0017] (3) The visual inspection device for the production of self-adhesive label paper moves upward to contact and limit the gear through the limit rod. The gear is limited by the limit rod so that the connecting rod cannot rotate. The connecting rod cannot rotate so that the fill light device cannot adjust the angle. The fill light device can adjust the direction of light according to actual needs to reduce the interference of reflected light on the image and ensure the authenticity of the inspection result. At the same time, limiting the fill light device can ensure that the fill light device maintains the best angle during operation and prevent the fill light device from rotating due to human error, thereby avoiding the generation of shadows, ensuring uniform illumination on the label surface and further improving the inspection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a visual inspection device for producing self-adhesive label paper according to the present invention;

[0019] Figure 2 This is a schematic diagram of the position structure of the detection platform and the driving plate of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A;

[0021] Figure 4 This is a schematic diagram of the position structure of the leveling rod and the extrusion rod of the present invention;

[0022] Figure 5 For the present invention Figure 4 A schematic diagram of the structure of part B in the middle is enlarged;

[0023] Figure 6 It is a schematic diagram of the position structure of the correction rod and the correction frame of the present invention;

[0024] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part C in the middle.

[0025] In the figure: 1. detection table; 2. winding device; 3. maintenance frame; 4. visual inspection equipment; 5. driving plate; 6. servo motor; 7. placement frame; 8. rotating motor; 9. fill light equipment; 10. leveling rod; 11. rotating rod; 12. extrusion rod; 13. L-shaped rod; 14. correction rod; 15. correction frame; 16. linkage block; 17. stabilizing hole; 181. load-bearing plate; 182. load-bearing hole; 183. support plate; 184. support rod; 185. support frame; 186. scraper rod; 187. fixed frame; 191. detection frame; 192. detection plate; 193. detection rod; 194. connecting rod; 195. gear; 196. limit frame; 197. limit plate; 198. limit rod; 199. elastic telescopic block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 6 One embodiment of the present invention is: a visual inspection device for the production of self-adhesive label paper, comprising a detection table 1, and also comprising a leveling device, wherein a winding device 2 is arranged on the top of the detection table 1, a maintenance frame 3 is fixedly installed on the top of the detection table 1, and a visual inspection device 4 is fixedly penetrated on the top of the maintenance frame 3, a driving plate 5 is fixedly installed on the top of the detection table 1, a servo motor 6 is fixedly installed on the front side of the driving plate 5, a placement frame 7 is fixedly installed on the top of the detection table 1, a rotating motor 8 is rotatably installed on the rear side of the placement frame 7, and a fill light device 9 is fixedly installed on the output end of the rotating motor 8, wherein the leveling device comprises a leveling rod 10, a rotating rod 11, an extrusion rod 12, and an L-shaped rod 13. , correction rod 14, correction frame 15, linkage block 16 and stabilizing hole 17, the leveling rod 10 is fixedly installed on the output end of the servo motor 6, the rotating rod 11 is rotatably installed on the inner wall of the placement frame 7, the extrusion rod 12 is fixedly installed on the circumference of the leveling rod 10, the L-shaped rod 13 slides through the front side of the placement frame 7, the correction rod 14 is fixedly installed on the circumference of the L-shaped rod 13, the correction frame 15 is fixedly installed on the rear side of the correction rod 14, the linkage block 16 is fixedly installed on the top of the correction rod 14, and the stabilizing hole 17 is opened on the surface of the placement frame 7. By leveling the label paper, the visual inspection equipment 4 can capture clearer images, thereby improving the recognition accuracy and reducing missed detection or misjudgment caused by wrinkles.

[0028] A No. 1 spring is arranged between the L-shaped rod 13 and the placement frame 7, and the No. 1 spring can drive the L-shaped rod 13 to reset. The front end of the correction rod 14 is arranged as an inclined surface, and the correction rod 14 contacts the inner wall of the stabilizing hole 17. Through position correction, the label paper is ensured to be in the correct center position during detection, thereby improving the accuracy of image capture and further reducing the scrap rate caused by misjudgment.

[0029] The correction frame 15 is elastic, the leveling rod 10 and the rotating rod 11 are located in the same horizontal plane as the winding device 2, the end of the extrusion rod 12 away from the leveling rod 10 is set as an inclined plane, the extrusion rod 12 rotates counterclockwise to contact the correction rod 14 and squeeze the correction rod 14. There are two groups of extrusion rods 12, L-shaped rods 13, correction rods 14, correction frames 15, linkage blocks 16 and stabilizing holes 17, and in the other group, the correction frame 15 is fixedly installed on the front side of the correction rod 14.

[0030] When this embodiment is working: the label paper to be detected is passed between the leveling rod 10 and the rotating rod 11 and fixed to the winding device 2. After the label paper and the winding device 2 are fixed, the winding device 2 operates to wind the label paper, and the servo motor 6 operates synchronously to drive the leveling rod 10 to rotate counterclockwise. The rotation of the leveling rod 10 cooperates with the rotating rod 11 to squeeze and flatten the label paper. At the same time, the counterclockwise rotation of the leveling rod 10 drives the extrusion rod 12 to rotate counterclockwise. The extrusion rod 12 rotates counterclockwise and contacts the correction rod 14 and squeezes the correction rod 14. The correction rod 14 is squeezed by the extrusion rod 12 and moves in the direction close to the label paper. The movement of the correction rod 14 in the direction close to the label paper drives the L-shaped rod 13 to move. The movement of the L-shaped rod 13 squeezes the No. 1 spring. The No. 1 spring is squeezed by the L-shaped rod 13 to deform and accumulate force, and at the same time, the correction rod 14 moves toward the direction close to the label paper, driving the correction frame 15 to move to correct the position of the label paper to be inspected, and the leveling rod 10 continues to rotate, driving the extrusion rod 12 to continue to rotate, and the extrusion rod 12 continues to rotate and breaks away from the contact with the correction rod 14. The correction rod 14 breaks away from the contact with the extrusion rod 12, so that the L-shaped rod 13 moves away from the label paper under the elastic force of the No. 1 spring, and the L-shaped rod 13 moves away from the label paper and drives the correction rod 14 to move and reset. The correction rod 14 moves and resets, driving the correction frame 15 to move and reset. When the label paper to be inspected moves to the bottom of the maintenance frame 3, the visual inspection device 4 operates to inspect the label paper.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a cleaning device for scraping off stains on the surface of the label paper is provided on the inner wall of the placement frame 7, an adjusting device is provided on the top of the placement frame 7, the cleaning device includes a load-bearing plate 181, a load-bearing hole 182, a support plate 183, a support rod 184, a support frame 185, a scraper rod 186 and a fixed frame 187, the load-bearing plate 181 is fixedly installed on the inner wall of the placement frame 7, the load-bearing hole 182 is opened on the surface of the load-bearing plate 181, the support plate 183 is fixedly installed on the inner wall of the load-bearing hole 182, the support rod 184 slides through the left and right walls of the support plate 183, the support frame 185 is fixedly installed at both ends of the support rod 184, the scraper rod 186 is fixedly installed on the bottom of the support frame 185, and the fixed frame 187 is fixedly installed on the circumferential surface of the support rod 184. By slightly scraping, the stains on the surface of the label paper can be effectively removed, ensuring that the label surface is clean and improving the inspection quality.

[0032] A No. 2 spring is arranged between the support plate 183 and the support rod 184, and the No. 2 spring can drive the support rod 184 to reset. The scraper rod 186 is elastic, and the end of the support frame 185 close to the leveling rod 10 is set as an inclined surface. The resonance state can increase the pressure of the scraper rod 186 on the surface of the label paper, making it easier to remove stains, thereby improving the cleaning effect.

[0033] The adjusting device includes a detection frame 191, a detection plate 192, a detection rod 193, a connecting rod 194, a gear 195, a limit frame 196, a limit plate 197, a limit rod 198 and an elastic telescopic block 199. The detection frame 191 is fixedly mounted on the right side of the placement frame 7, the detection plate 192 is slidably mounted on the inner wall of the detection frame 191, the detection rod 193 is fixedly mounted on the rear side of the detection plate 192, the connecting rod 194 is fixedly mounted on the front side of the fill light device 9, the gear 195 is fixedly mounted on the circumferential surface of the connecting rod 194, and the limit The positioning frame 196 is fixedly passed through the top of the placement frame 7, the limit plate 197 is slidably installed on the inner wall of the limit frame 196, the limit rod 198 is fixedly installed on the top of the limit plate 197, the elastic telescopic block 199 is fixedly installed on the front side of the placement frame 7, and a limit groove is provided on the right side of the limit rod 198. A hose is provided between the detection frame 191 and the limit frame 196. Limiting the fill light device 9 can ensure that the fill light device 9 maintains the best angle during operation, prevents the fill light device 9 from rotating due to accidental human touch, and thus avoids the generation of shadows.

[0034] One end of the detection rod 193 close to the support frame 185 is set as an inclined surface, and a No. 3 spring is set between the detection frame 191 and the detection plate 192. One end of the No. 3 spring is set on the inner wall of the detection frame 191 and the other end is set on the front side of the detection plate 192. The No. 3 spring can be used to drive the detection plate 192 to reset, and the free end of the elastic telescopic block 199 is in contact with the limit rod 198.

[0035] Liquid is provided inside the detection frame 191 , liquid is provided inside the limit frame 196 , the top of the limit rod 198 is provided as an inclined surface, and the liquid inside the detection frame 191 is squeezed by the detection plate 192 and enters the limit frame 196 through the hose.

[0036] When this embodiment is working: the correction rod 14 moves in the direction close to the label paper and drives the linkage block 16 to move, the linkage block 16 moves to contact with the support frame 185 and squeezes the support frame 185, the support frame 185 is squeezed by the linkage block 16 and moves in the direction away from the leveling rod 10, the support frame 185 moves in the direction away from the leveling rod 10 and drives the support rod 184 to move, the support rod 184 moves to pull the No. 2 spring, the No. 2 spring is squeezed by the support rod 184 to produce deformation and accumulate force, and at the same time the support frame 185 moves in the direction away from the leveling rod 10 and drives the scraper rod 186 to move, and the L-shaped rod 13 moves in the direction away from the label paper and drives the correction rod 14 to move and reset, the correction rod 14 moves and resets and drives the linkage Block 16 moves out of contact with the support frame 185, and when the support frame 185 is out of contact with the correction rod 14, the support rod 184 moves and resets in the direction close to the leveling rod 10 under the action of the elastic force of the No. 2 spring. The support rod 184 moves and resets, driving the support frame 185 and the scraper rod 186 to move and reset. The scraper rod 186 uses this reciprocating horizontal movement to slightly scrape the stains on the top of the label paper. When the support rod 184 moves in the direction away from the leveling rod 10, the support rod 184 moves and drives the fixed frame 187 to move. The fixed frame 187 moves and hits the support plate 183 to generate vibration. The vibration of the fixed frame 187 drives the support rod 184 and the support frame 185 to vibrate. The vibration of the support frame 185 drives the scraper rod 186 to resonate together.

[0037] The support frame 185 moves in a direction away from the leveling rod 10, driving the scraper rod 186 to move. The scraper rod 186 moves to contact the detection rod 193 and squeezes the detection rod 193. The detection rod 193 is squeezed by the scraper rod 186 and moves in a direction away from the support frame 185. The detection rod 193 moves in a direction away from the support frame 185 and drives the detection plate 192 to move. The movement of the detection plate 192 squeezes the liquid inside the detection frame 191. The liquid inside the detection frame 191 is squeezed by the detection plate 192 and enters the limit frame 196 through the hose. The liquid inside the limit frame 196 squeezes the limit plate 197. The limit plate 197 is squeezed by the liquid inside the limit frame 196 and moves upward. The limit plate 197 moves upward to drive the limit rod 198 to move upward. The limit rod 198 moves upward to align the limit slot with the free end of the elastic telescopic block 199. After the free end of the elastic telescopic block 199 is aligned with the limit slot, the free end of the elastic telescopic block 199 moves toward the direction close to the gear 195 and contacts the inner wall of the limit slot. The free end of the elastic telescopic block 199 contacts the inner wall of the limit slot and limits the limit rod 198. At the same time, the limit rod 198 moves upward and contacts the gear 195 and limits the gear 195. The gear 195 is limited by the limit rod 198, so that the connecting rod 194 cannot rotate. The connecting rod 194 cannot rotate, so that the fill light device 9 cannot adjust the fill light angle during the label paper detection process.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for the production of self-adhesive label paper, comprising a detection table (1), characterized in that: Also includes a leveling device; The top of the detection platform (1) is provided with a winding device (2); the top of the detection platform (1) is fixedly provided with a maintenance frame (3); the top of the maintenance frame (3) is fixedly provided with a visual inspection device (4); the top of the detection platform (1) is fixedly provided with a driving plate (5); the front side of the driving plate (5) is fixedly provided with a servo motor (6); the top of the detection platform (1) is fixedly provided with a placement frame (7); the rear side of the placement frame (7) is rotatably provided with a rotating motor (8); and the output end of the rotating motor (8) is fixedly provided with a fill light device (9); The leveling device comprises a leveling rod (10), a rotating rod (11), an extruding rod (12), an L-shaped rod (13), a correction rod (14), a correction frame (15), a linkage block (16) and a stabilizing hole (17), wherein the leveling rod (10) is fixedly mounted on the output end of the servo motor (6), the rotating rod (11) is rotatably mounted on the inner wall of the placement frame (7), the extruding rod (12) is fixedly mounted on the circumferential surface of the leveling rod (10), the L-shaped rod (13) slides through the front side of the placement frame (7), the correction rod (14) is fixedly mounted on the circumferential surface of the L-shaped rod (13), the correction frame (15) is fixedly mounted on the rear side of the correction rod (14), the linkage block (16) is fixedly mounted on the top of the correction rod (14), and the stabilizing hole (17) is opened on the surface of the placement frame (7); The inner wall of the placement frame (7) is provided with a cleaning device for scraping off stains on the surface of the label paper, and the top of the placement frame (7) is provided with an adjusting device.

2. A visual inspection device for the production of self-adhesive label paper according to claim 1, characterized in that: A No. 1 spring is provided between the L-shaped rod (13) and the placement frame (7); the front end of the correction rod (14) is provided as an inclined surface; and the correction rod (14) contacts the inner wall of the stabilizing hole (17).

3. The visual inspection device for the production of self-adhesive label paper according to claim 2, characterized in that: The correction frame (15) is elastic, the leveling rod (10) and the rotating rod (11) are located on the same horizontal plane as the winding device (2), and one end of the squeezing rod (12) away from the leveling rod (10) is arranged as an inclined surface.

4. The visual inspection device for producing self-adhesive label paper according to claim 3, characterized in that: The cleaning device comprises a load-bearing plate (181), a load-bearing hole (182), a support plate (183), a support rod (184), a support frame (185), a scraper rod (186) and a fixed frame (187); the load-bearing plate (181) is fixedly mounted on the inner wall of the placement frame (7); the load-bearing hole (182) is provided on the surface of the load-bearing plate (181); the support plate (183) is fixedly mounted on the inner wall of the load-bearing hole (182); the support rod (184) slides through the left and right walls of the support plate (183); the support frame (185) is fixedly mounted on both ends of the support rod (184); the scraper rod (186) is fixedly mounted on the bottom of the support frame (185); and the fixed frame (187) is fixedly mounted on the circumferential surface of the support rod (184).

5. The visual inspection device for producing self-adhesive label paper according to claim 4, characterized in that: A No. 2 spring is provided between the support plate (183) and the support rod (184); the scraper rod (186) is elastic; and one end of the support frame (185) close to the leveling rod (10) is provided as an inclined surface.

6. A visual inspection device for the production of self-adhesive label paper according to claim 5, characterized in that: The adjusting device comprises a detection frame (191), a detection plate (192), a detection rod (193), a connecting rod (194), a gear (195), a limit frame (196), a limit plate (197), a limit rod (198) and an elastic telescopic block (199); the detection frame (191) is fixedly mounted on the right side of the placement frame (7); the detection plate (192) is slidably mounted on the inner wall of the detection frame (191); the detection rod (193) is fixedly mounted on the rear side of the detection plate (192); and the connecting rod (194) is fixedly mounted on the replenishing member (199). The optical device (9) is disposed at the front side, the gear (195) is fixedly mounted on the circumferential surface of the connecting rod (194), the limit frame (196) is fixedly penetrated through the top of the placement frame (7), the limit plate (197) is slidably mounted on the inner wall of the limit frame (196), the limit rod (198) is fixedly mounted on the top of the limit plate (197), the elastic telescopic block (199) is fixedly mounted on the front side of the placement frame (7), a limit groove is provided on the right side of the limit rod (198), and a hose is provided between the detection frame (191) and the limit frame (196).

7. A visual inspection device for the production of self-adhesive label paper according to claim 6, characterized in that: One end of the detection rod (193) close to the support frame (185) is arranged as an inclined surface, a No. 3 spring is arranged between the detection frame (191) and the detection plate (192), and a free end of the elastic telescopic block (199) is in contact with the limit rod (198).

8. The visual inspection device for producing self-adhesive label paper according to claim 7, characterized in that: Liquid is disposed inside the detection frame (191), liquid is disposed inside the limit frame (196), and the top of the limit rod (198) is disposed as an inclined surface.

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