Portable multi-light-source trademark detection platform

Abstract

A portable multi-light-source trademark detection platform disclosed by the present invention comprises a detection box, the bottom of the detection box is rotatably provided with a detection table, the detection table is provided with a clamping mechanism, the clamping mechanism is used for clamping and fixing a zip-top can, the peripheral side of the detection table is provided with a light shielding box, and the light shielding box is used for clamping and fixing the zip-top can. The shading box is slidably arranged in the radial direction of the detection table, the side face, facing the zip-top can, of the shading box is open, a camera and a light source are arranged in the shading box, and a clamping force adjusting mechanism is arranged between the clamping mechanism and the detection table; and the clamping force adjusting mechanism is used for adjusting the clamping force of the clamping mechanism on the zip-top can. According to the invention, temporary inspection and sampling inspection of the surface identification of the cylindrical ring-pull can are accurately and quickly realized.

Description

Technical Field

[0001] This invention belongs to the field of trademark testing equipment, and in particular relates to a portable multi-light source trademark testing platform. Background Technology

[0002] During the production and processing of aluminum cans, aluminum alloy sheets are typically formed using a stamping machine, turning the flat sheet into a cylindrical can body with an opening at the top. Next, processes such as edge rolling, cleaning, coating, printing, and decoration are performed, followed by inspection of the can material and sealing. Printing and decoration involve printing trademarks, patterns, and other decorative elements onto the can surface. Besides traditional printing methods, there are also personalized customization options, typically using laser engraving to create customized designs. Whether using traditional printing or laser engraving to create trademarks or patterns on the can surface, appropriate testing is required after printing or engraving is completed.

[0003] Because aluminum cans are cylindrical, the labels attached to their surfaces have curved shapes, leading to visual errors when inspecting them manually. Publication number CN109142394A discloses a bottle label inspection device, belonging to the technical field of bottle inspection equipment. It includes a conveyor line, a spiral conveyor mechanism with a conveying screw offset to one side of the conveyor belt, and a first visual inspection mechanism located at the input end of the spiral conveyor mechanism. A second visual inspection mechanism is located downstream of the spiral conveyor mechanism, and a rotation adjustment mechanism is located on the opposite side of the conveyor line relative to the spiral conveyor mechanism. In the first visual inspection mechanism, the lens of a first industrial camera faces downwards towards the conveyor line, and the first visual inspection mechanism inspects the labels on the upper part of the bottle. The rotation adjustment mechanism rotates the bottle. In the second visual inspection mechanism, the lens of a second industrial camera faces the side of the bottle, and the second visual inspection mechanism inspects the labels on the upper and middle parts of the bottle. This device can inspect the labels on the upper and middle parts of the bottle. Although the testing device inspected each bottle, the visual inspection mechanism could not complete the circumferential inspection of the bottle surface when inspecting the trademarks or logos on the bottle surface. Summary of the Invention

[0004] The purpose of this invention is to provide a portable multi-light source trademark inspection platform for accurately inspecting the markings on the surface of wine bottles or aluminum cans.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a portable multi-light source trademark detection platform, comprising a detection box, a detection platform rotatably mounted on the bottom of the detection box, a clamping mechanism mounted on the detection platform for clamping and fixing an aluminum can, a light-shielding box mounted on the periphery of the detection platform, the light-shielding box being slidably mounted radially along the detection platform, the side of the light-shielding box facing the aluminum can being open, a camera and a light source being mounted inside the light-shielding box, and a clamping force adjusting mechanism being mounted between the clamping mechanism and the detection platform for adjusting the clamping force of the clamping mechanism on the aluminum can.

[0006] As a further description of the above technical solution: the bottom of the testing box is provided with an internal gear ring, the internal gear ring is coaxially arranged with the testing table, the inside of the testing table is provided with a mounting frame, the mounting frame is provided with a first servo motor, the output end of the first servo motor is provided with a gear, and the gear meshes with the internal gear ring for transmission.

[0007] As a further description of the above technical solution: the clamping mechanism includes a lead screw slider and two sets of clamping assemblies. The two sets of clamping assemblies are symmetrical about the center of the testing table and are symmetrically arranged about the lead screw slider. A second servo motor is coaxially mounted on one end of the lead screw slider. A sliding groove symmetrical about the lead screw slider is provided on the testing table. The clamping assembly includes a clamping plate, a moving column, a connecting block, and a connecting rod. A guide rod is provided on the back of the clamping plate. The moving column slides through the sliding groove. A guide hole is provided on the moving column. The guide rod slides through the guide hole. A first spring is sleeved on the guide rod. The first spring is located between the clamping plate and the moving column. A connecting block is provided at the end of the moving column away from the guide rod. One end of the connecting rod is rotatably connected to the connecting block, and the other end is rotatably connected to the slider of the lead screw slider.

[0008] As a further description of the above technical solution: the clamping plate is an arc-shaped plate, and rubber strips are provided on both sides of the clamping plate.

[0009] As a further description of the above technical solution: the moving column is a hollow tube, and the connecting block has a through hole communicating with the moving column. The clamping force adjustment mechanism includes a proximity switch, a guide seat, a trigger head, a second spring, and an elastic pull rope. The trigger head is located on the back of the clamping plate, the guide seat is located on the moving column and corresponds to the trigger head, the proximity switch is slidably located in the guide seat, the second spring is located between the proximity switch and the inner wall of the moving column, one end of the elastic pull rope is connected to the proximity switch, and the other end is connected to the side wall of the detection platform near the connecting block.

[0010] As a further description of the above technical solution: a plurality of cameras and a plurality of light sources are arranged vertically inside the light-shielding box, and the cameras and the light sources are arranged alternately in sequence. A controller is also provided inside the light-shielding box, and the controller is used to control the cameras to take pictures and adjust the brightness and color of the light sources.

[0011] As a further description of the above technical solution: the light-shielding box corresponds to one of the clamping components. A sliding adjustment mechanism is provided between the light-shielding box and the detection stage. The lower surface of the light-shielding box is provided with a guide rail, a locking tooth, and a baffle. The locking tooth and the guide rail are both arranged along the length direction of the light-shielding box. The sliding adjustment mechanism includes a sliding seat, a dial plate, a locking rod, a toggle rod, and a trigger plate. The guide rail and the sliding seat are slidably adapted. The dial plate is located at the end of the moving column away from the connecting block. The dial plate is located between the guide rail and the baffle. The dial plate is adapted to the baffle. A fixed plate is provided inside the sliding seat. The locking rod slides up and down on the fixed plate. The locking rod corresponds to the locking tooth. The toggle rod is located at the end of the locking rod away from the locking tooth. The trigger plate is located on the side wall of the detection stage. The trigger plate corresponds to the toggle rod. A third spring is sleeved on the locking rod. The third spring is located between the fixed plate and the toggle rod.

[0012] As a further description of the above technical solution: a cleaning sponge strip is provided around the opening of the light-shielding box facing the centerline of the detection platform.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0014] (1) The detection platform of the present invention can quickly and accurately detect the trademarks on the periphery of the can. By rotating the can itself once, the camera can capture the trademarks or logos on the surface of the can along the circumference of the can. The clamping mechanism of the platform can automatically clamp the can, which can automatically center the can. The clamping force is different for cans of different diameters. Under the premise of ensuring stable clamping, the large clamping force is avoided to prevent the can from deforming.

[0015] (2) The rubber strips on the clamping plate increase the number of fixed points when clamping, making the force on the can more dispersed in the circumference when clamping the can. In addition, the rubber strips play a buffering role. The elastic rubber strips contact the bottom edge and sides of the can, minimizing the deformation of the can.

[0016] (3) The setting of the light shield box, and the movement of the light shield box under the drive of the clamp plate and its contact with the side wall of the can to be tested, forming a relatively closed shooting area between the can and the can, reducing the interference of other light sources on the shooting results during shooting. The cleaning sponge strip can clean the surface of the can to be tested, making the shooting results more accurate. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a bottom view of the testing station of the present invention;

[0021] Figure 5 This is a vertical sectional view of the present invention;

[0022] Figure 6 for Figure 5 Enlarged view at point B in the middle;

[0023] Figure 7 This is a schematic diagram showing the positional relationship between the detection stage and the sliding seat of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view at point C;

[0025] Figure 9 This is a schematic diagram of the light-shielding box structure of the present invention.

[0026] Legend: 1. Aluminum can; 2. Testing box; 3. Testing table; 4. Light shield; 5. Internal gear ring; 6. Mounting bracket; 7. First servo motor; 8. Gear; 9. Clamping mechanism; 10. Lead screw; 11. Slider; 12. Clamping assembly; 13. Second servo motor; 14. Sliding groove; 15. Clamping plate; 16. Moving column; 17. Connecting block; 18. Connecting rod; 19. Guide rod; 20. First spring; 21. Rubber strip; 22. Clamping force adjustment mechanism; 23. Proximity switch; 24. Guide seat; 25. Trigger head; 26. Second spring; 27. Elastic pull rope; 28. Camera; 29. ​​Light source; 30. Controller; 31. Guide rail; 32. Clamping tooth; 33. Baffle; 34. Sliding seat; 35. Toggle plate; 36. Clamping rod; 37. Toggle rod; 38. Trigger plate; 39. Third spring; 40. Cleaning sponge strip. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-9 This invention provides a technical solution for a portable multi-light source trademark detection platform:

[0029] A portable multi-light source trademark inspection platform includes an inspection box 2. An inspection platform 3 is rotatably mounted on the bottom of the inspection box 2. The inspection platform 3 is a frustum-shaped shell with an open bottom. An internal gear ring 5 is fixedly mounted on the bottom of the inspection box 2 and coaxially arranged with the inspection platform 3. A mounting frame 6 is provided inside the inspection platform 3. A first servo motor 7 is mounted on the mounting frame 6. A gear 8 is mounted on the output end of the first servo motor 7, and the gear 8 meshes with the internal gear ring 5 for transmission. When the first servo motor 7 is started, the gear 8 rotates, causing the gear 8 to rotate around the internal gear ring 5, thus driving the entire inspection platform 3 to rotate.

[0030] The testing platform 3 is equipped with a clamping mechanism 9, which is used to clamp and fix the aluminum can 1. The clamping mechanism 9 includes a lead screw slider and two sets of clamping components 12. The two sets of clamping components 12 are symmetrical about the center of the testing platform 3 and are symmetrically arranged about the lead screw slider. A second servo motor 13 is provided at one end of the lead screw 10 of the lead screw slider. The output shaft of the second servo motor 13 is coaxially fixed with the lead screw 10. The rotation of the second servo motor 13 drives the slider 11 to move along the lead screw 10. The testing platform 3 has sliding grooves 14 symmetrical about the lead screw slider. The clamping components 12 include a clamping plate 15, a moving column 16, a connecting block 17, and a connecting rod 18. The clamping plate 15 is an arc-shaped plate, and rubber strips 21 are provided on both sides of the clamping plate 15. The rubber strips 21 play a buffering role and are in contact with the bottom edge and sides of the aluminum can 1. A guide rod 19 is provided on the back of the clamping plate 15. The moving column 16 is slidably inserted into the sliding groove 14. A guide hole is provided on the moving column 16. The guide rod 19 is slidably inserted into the guide hole. A first spring 20 is sleeved on the guide rod 19. The first spring 20 is located between the clamping plate 15 and the moving column 16. A connecting block 17 is provided at the end of the moving column 16 away from the guide rod 19. One end of the connecting rod 18 is rotatably connected to the connecting block 17, and the other end is rotatably connected to the slider 11 of the lead screw slider.

[0031] When the second servo motor 13 starts, it drives the slider 11 to slide along the lead screw 10. Under the action of the connecting rod 18, the two clamping plates 15 move towards each other to clamp the can 1. In order to ensure that the second servo motor 13 can stop in time after the two clamping plates 15 clamp the can 1, and to avoid over-clamping and deformation of the can 1, a trigger head 25 is provided on the back of the clamping plate 15, and a proximity switch 23 is provided on the moving column 16. When the first spring 20 is compressed to the point that the trigger head 25 triggers the proximity switch 23, the second servo motor 13 stops working, and the two clamping plates 15 maintain the clamping state of the can 1.

[0032] Since the sizes of the aluminum cans 1 to be tested vary, and the clamping plates 15 and rubber strips 21 of the same size have different relative clamping positions for the aluminum cans 1, specifically, the four rubber strips 21 of the smaller diameter aluminum cans 1 are relatively dispersed, while the two rubber strips 21 of the larger diameter aluminum cans 1 located on the same clamping plate 15 are relatively concentrated. If the same clamping force is used for clamping, the larger diameter aluminum cans 1 will be subjected to a greater deformation force.

[0033] A clamping force adjusting mechanism 22 is provided between the clamping mechanism 9 and the detection platform 3. The clamping force adjusting mechanism 22 is used to adjust the clamping force of the clamping mechanism 9 on the can 1. The moving column 16 is a hollow tube. The connecting block 17 has a through hole communicating with the moving column 16. The clamping force adjusting mechanism 22 includes a proximity switch 23, a guide seat 24, a trigger head 25, a second spring 26, and an elastic pull rope 27. The trigger head 25 is located on the back of the clamping plate 15. The guide seat 24 is located on the moving column 16 and corresponds to the trigger head 25. The proximity switch 23 is slidably disposed in the guide seat 24. The second spring 26 is disposed between the proximity switch 23 and the inner wall of the moving column 16. One end of the elastic pull rope 27 is connected to the proximity switch 23, and the other end is connected to the side wall of the detection platform 3 near the connecting block 17. When the moving column 16 drives the clamping plates 15 to move towards each other to clamp the can 1, the elastic pull rope 27 pulls the proximity switch 23 to move, and the second spring 26 is compressed, which increases the distance between the trigger head 25 and the proximity switch 23. Therefore, when clamping the can 1, the compression stroke of the first spring 20 is increased, thus increasing the clamping force. This results in a greater clamping force for cans with smaller diameters.

[0034] A light-shielding box 4 is arranged around the periphery of the testing platform 3. The light-shielding box 4 is radially slidable along the testing platform 3. The side of the light-shielding box 4 facing the can 1 is open, and cleaning sponge strips 40 are arranged around the opening. A camera 28 and a light source 29 are arranged inside the light-shielding box 4. Multiple cameras 28 and multiple light sources 29 are arranged vertically inside the light-shielding box 4, and the cameras 28 and light sources 29 are arranged alternately. A controller 30 is also arranged inside the light-shielding box 4. The controller 30 is used to control the camera 28 to take pictures and adjust the brightness and color of the light source 29. The camera 28 takes pictures around the periphery of the can 1 to obtain a picture of the trademark to be tested and compares it with a standard trademark. At the same time, the picture taken before taking pictures is processed by the controller 30. The controller 30 controls the color of the light source 29, and the light-shielding box blocks the shooting area to avoid interference from other reflected light.

[0035] The light-shielding box 4 corresponds to one of the clamping components 12. A sliding adjustment mechanism is provided between the light-shielding box 4 and the detection table 3. The lower surface of the light-shielding box 4 is provided with a guide rail 31, a locking tooth 32, and a baffle 33. The locking tooth 32 and the guide rail 31 are both arranged along the length direction of the light-shielding box 4. The sliding adjustment mechanism includes a sliding seat 34, a dial plate 35, a locking rod 36, a toggle rod 37, and a trigger plate 38. The guide rail 31 is slidably adapted to the sliding seat 34. The dial plate 35 is located at the end of the moving column 16 away from the connecting block 17. The lever 35 is located between the guide rail 31 and the baffle 33. The lever 35 is adapted to the baffle 33. A fixed plate is provided inside the sliding seat 34. The locking rod 36 slides up and down on the fixed plate. The locking rod 36 corresponds to the locking tooth 32. The actuating rod 37 is located at the end of the locking rod 36 away from the locking tooth 32. The trigger plate 38 is located on the side wall of the detection table 3. The trigger plate 38 corresponds to the actuating rod 37. A third spring 39 is sleeved on the locking rod 36. The third spring 39 is located between the fixed plate and the actuating rod 37.

[0036] When the clamping plate 15 clamps the can 1, the moving column 16 drives the lever 35 and the baffle 33 to move. At this time, under the action of the trigger plate 38, the locking rod 36 does not engage with the locking tooth 32, so that the light shielding box 4 moves towards the can 1 along with the clamping plate 15, and the cleaning sponge strip 40 of the light shielding box 4 contacts the side wall of the can 1.

[0037] Working Principle: The testing box 2 of this application is small and portable, mainly used for sampling and testing the surface trademarks of mass-produced aluminum cans 1. In use, the testing box 2 is placed on a table or the ground, then opened. The sampled aluminum can 1 is placed on the testing platform 3. The second servo motor 13 is then activated, causing the two clamping plates 15 to move towards each other to clamp and fix the aluminum can 1. During clamping, the clamping plates 15 drive the aluminum can 1 to move until it is coaxial with the testing platform 3 and fixed. When the proximity switch 23 is triggered by the trigger head 25, the second servo motor 13 stops moving, completing the clamping of the aluminum can 1. Simultaneously, the light-shielding box 4 moves to be in contact with the aluminum can 1. Finally, the first servo motor 7 is activated, and the gear 8 rotates, causing the testing platform 3 to rotate one revolution around the testing box 2. Then, the first servo motor 7 stops rotating, and the second servo motor 13 rotates in the opposite direction, causing the clamping plates 15 to return to their initial state.

[0038] As the can 1 rotates once under the action of the testing platform 3, the camera 28 captures a circumferential image of the can 1 and compares it with a standard image. The fit of the trademark is judged based on the degree of fit of the comparison.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention within the scope of the technology disclosed in the present invention, and all such substitutions or changes should be covered within the scope of protection of the present invention.

Claims

1. A portable multi-light source trademark detection platform, characterized in that... The device includes a testing box (2), a testing platform (3) is rotatably mounted on the bottom of the testing box (2), a clamping mechanism (9) is mounted on the testing platform (3), the clamping mechanism (9) is used to clamp and fix the aluminum can (1), a light shielding box (4) is mounted on the periphery of the testing platform (3), the light shielding box (4) is slidably mounted along the radial direction of the testing platform (3), the side of the light shielding box (4) facing the aluminum can (1) is open, a camera (28) and a light source (29) are mounted inside the light shielding box (4), a clamping force adjusting mechanism (22) is mounted between the clamping mechanism (9) and the testing platform (3), the clamping force adjusting mechanism (22) is used to adjust the clamping force of the clamping mechanism (9) on the aluminum can (1).

2. The portable multi-light source trademark detection platform according to claim 1, characterized in that: The bottom of the testing box (2) is provided with an internal gear ring (5), which is coaxially arranged with the testing platform (3). The testing platform (3) is provided with a mounting frame (6), and a first servo motor (7) is provided on the mounting frame (6). A gear (8) is provided at the output end of the first servo motor (7), and the gear (8) meshes with the internal gear ring (5) for transmission.

3. The portable multi-light source trademark detection platform according to claim 1, characterized in that: The clamping mechanism (9) includes a lead screw slider and two sets of clamping assemblies (12). The two sets of clamping assemblies (12) are symmetrical about the center of the detection table (3) and are symmetrically arranged about the lead screw slider. A second servo motor (13) is coaxially arranged at one end of the lead screw (10) of the lead screw slider. The detection table (3) has sliding grooves (14) symmetrical about the lead screw slider. The clamping assembly (12) includes a clamping plate (15), a moving column (16), a connecting block (17), and a connecting rod (18). A guide is provided on the back of the clamping plate (15). The guide rod (19) is slidably inserted into the sliding groove (14). The guide rod (19) is slidably inserted into the guide hole. The guide rod (19) is fitted with a first spring (20). The first spring (20) is located between the clamping plate (15) and the moving column (16). A connecting block (17) is provided at one end of the moving column (16) away from the guide rod (19). One end of the connecting rod (18) is rotatably connected to the connecting block (17), and the other end is rotatably connected to the slider (11) of the lead screw slider.

4. The portable multi-light source trademark detection platform according to claim 3, characterized in that: The clamping plate (15) is an arc-shaped plate, and rubber strips (21) are provided on both sides of the clamping plate (15).

5. The portable multi-light source trademark detection platform according to claim 3, characterized in that: The movable column (16) is a hollow tube. The connecting block (17) has a through hole communicating with the movable column (16). The clamping force adjustment mechanism (22) includes a proximity switch (23), a guide seat (24), a trigger head (25), a second spring (26), and an elastic pull rope (27). The trigger head (25) is located on the back of the clamping plate (15). The guide seat (24) is located on the movable column (16) and corresponds to the trigger head (25). The proximity switch (23) is slidably located inside the guide seat (24). The second spring (26) is located between the proximity switch (23) and the inner wall of the movable column (16). One end of the elastic pull rope (27) is connected to the proximity switch (23), and the other end is connected to the side wall of the detection table (3) near the connecting block (17).

6. The portable multi-light source trademark detection platform according to claim 3, characterized in that: The light-shielding box (4) is vertically arranged with multiple cameras (28) and multiple light sources (29). The cameras (28) and the light sources (29) are arranged alternately in sequence. The light-shielding box (4) is also equipped with a controller (30), which is used to control the cameras (28) to take pictures and adjust the brightness and color of the light sources (29).

7. The portable multi-light source trademark detection platform according to claim 3, characterized in that: The light-shielding box (4) corresponds to one of the clamping components (12). A sliding adjustment mechanism is provided between the light-shielding box (4) and the detection table (3). The lower surface of the light-shielding box (4) is provided with a guide rail (31), a locking tooth (32), and a baffle (33). The locking tooth (32) and the guide rail (31) are both arranged along the length direction of the light-shielding box (4). The sliding adjustment mechanism includes a sliding seat (34), a dial plate (35), a locking rod (36), a toggle rod (37), and a trigger plate (38). The guide rail (31) is slidably adapted to the sliding seat (34). The dial plate (35) is located at the end of the moving column (16) away from the connecting block (17). The plate (35) is located between the guide rail (31) and the baffle (33). The lever (35) is adapted to the baffle (33). A fixed plate is provided inside the sliding seat (34). The locking rod (36) slides up and down on the fixed plate. The locking rod (36) corresponds to the locking tooth (32). The actuating rod (37) is located at the end of the locking rod (36) away from the locking tooth (32). The trigger plate (38) is located on the side wall of the detection table (3). The trigger plate (38) corresponds to the actuating rod (37). A third spring (39) is sleeved on the locking rod (36). The third spring (39) is located between the fixed plate and the actuating rod (37).

8. The portable multi-light source trademark detection platform according to claim 1, characterized in that: The light-shielding box (4) has a cleaning sponge strip (40) on the periphery of the opening facing the centerline of the detection table (3).

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