Defect detection device for label production and processing

Abstract

The invention relates to the technical field of label production and detection, and discloses a defect detection device for label production and processing, which comprises a detection box, a notch is formed in the detection box, a vertical plate is connected in the detection box, a connecting shaft is connected to the vertical plate, a roller is rotatably connected to the connecting shaft, and a mounting strip is slidably connected to one side of the vertical plate. One side of the vertical plate is slidably connected with a third sliding rail, one side of the third sliding rail is connected with a connecting rod, the connecting rod is connected with a connecting disc, one side of the connecting disc is connected with a rack through a torsional spring, and the rack is rotationally connected to the connecting rod. According to the invention, a detection mode that a label continuously moves is abandoned by using the slide rail III, motion blur is effectively avoided through alternate movement of the label and the camera, and a high-frame-rate industrial camera does not need to be purchased, so that the initial equipment purchase cost is reduced, and the high daily maintenance and calibration cost of high-precision equipment is reduced.

Description

Technical Field

[0001] This invention relates to the field of label production inspection technology, and in particular to a defect detection device for label production and processing. Background Technology

[0002] Label defect detection uses industrial cameras and AI algorithms to identify defects in label production processes such as printing and die-cutting, such as missing prints and rough edges. Through image analysis and sorting, it achieves automated quality control with high efficiency and accuracy.

[0003] Label production is prone to various defects due to processes, affecting product appearance, function, and brand image. For example, blurry drug labels can mislead information. Therefore, inspection is necessary to ensure quality, reduce the influx of substandard products into the market, and lower after-sales risks and costs. In automated label production processes, traditional defect detection technologies generally use fixed industrial cameras to perform online real-time inspection of high-speed moving strip labels. During operation, the labels pass through the inspection station in a continuous transmission manner. In this process, the relative high-speed movement between the label and the camera can easily cause motion distortion problems such as image ghosting and edge blurring, making it difficult to accurately identify minor defects. To meet the accuracy requirements, companies have to purchase expensive high-frame-rate, high-resolution industrial cameras, significantly increasing equipment investment costs. In addition, even if the system detects defects, because the labels are in a continuous high-speed state, it is difficult for both mechanical sorting mechanisms and manual intervention to accurately locate and quickly remove defective products in a short time. This can easily lead to missed or misjudged defects, affecting production efficiency and potentially causing substandard products to enter the market, seriously damaging brand quality image. The efficiency bottleneck and cost contradiction of existing technologies have become key pain points restricting the improvement of quality control in the label manufacturing industry.

[0004] Based on this, a defect detection device for label production and processing is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a defect detection device for label production and processing in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A defect detection device for label production and processing includes a detection box with a slot. A vertical plate is connected inside the detection box, and a connecting shaft is connected to the vertical plate. A roller is rotatably connected to the connecting shaft. An mounting strip is slidably connected to one side of the vertical plate, and a detection probe is slidably connected to the mounting strip. A ratchet gear is connected to one end of the roller. A slide rail is slidably connected to one side of the vertical plate, and a connecting rod is connected to one side of the slide rail. A connecting plate is connected to a connecting disc, and a rack is connected to one side of the connecting disc via a torsion spring. The rack is rotatably connected to the connecting rod. A drive mechanism is connected to the slide rail to first drive the rack to rotate the ratchet gear, and then drive the detection probe to detect the label on the roller.

[0007] Preferably, a slide rail is connected to the vertical plate, a sliding clamp is slidably connected to the slide rail, and the mounting strip is fixedly connected to one side of the sliding clamp.

[0008] Preferably, one end of the slide rail is connected to a limiting end, a slide rod is slidably connected to the limiting end, a spring is sleeved on the outside of the slide rod, and the two ends of the spring are respectively connected to the limiting end and the slide clamp.

[0009] Preferably, a second deflection shaft is connected to one side of the vertical plate, and the second deflection shaft is connected to a pawl via a torsion spring. One end of the pawl is engaged with a ratchet gear.

[0010] Preferably, a slide rail two is connected to one side of the vertical plate, and a slide clamp three is slidably connected to the slide rail two, with the slide clamp three fixedly connected to the slide rail three.

[0011] Preferably, the driving mechanism includes a cylinder, one end of which is rotatably connected to a vertical plate. A bending groove is provided on the vertical plate, and a sliding column is slidably connected to the bending groove. One end of the sliding column is rotatably connected to the output end of the cylinder. A sleeve block is rotatably connected to the sliding column, and the sleeve block is slidably connected to a slide rail. A toggle lever is connected to the sliding clamp.

[0012] Preferably, one end of the cylinder is connected to a collar, and one side of the vertical plate is connected to a deflection shaft, with the collar rotatably connected to the deflection shaft.

[0013] Preferably, a sliding clamp is slidably connected to the slide rail three, and the sliding clamp two is fixedly connected to the sleeve block.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This application adopts a sliding rail three-structure, which eliminates the detection mode of continuous label movement by using the sliding rail three-structure. By alternating movement of the label and the camera, motion blur is effectively avoided. There is no need to purchase a high frame rate industrial camera, which not only reduces the initial equipment purchase cost, but also reduces the high daily maintenance and calibration costs of high-precision equipment.

[0015] 2. This application utilizes a rack and pinion structure, which enables label detection even when the label is stationary. This allows for precise location of defective products. When combined with a rapid sorting device, defective labels can be removed and replaced instantly. Compared to traditional dynamic detection, this method significantly improves efficiency, reduces the defect rate, and ensures label production quality and efficiency. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the detection box provided according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of the internal structure of the detection box provided according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the structure of the cylinder connection provided according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the pawl connection provided according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of the three-way connection of the slide rail provided according to an embodiment of the present invention is shown.

[0017] Legend: 1. Detection box; 2. Groove; 3. Vertical plate; 4. Bending groove; 5. Connecting shaft; 6. Roller; 7. Slide rail one; 8. Slide clamp one; 9. Actuating rod; 10. Mounting strip; 11. Slide rod; 12. Spring; 13. Limiting end; 14. Slide rail two; 15. Slide rail three; 16. Slide clamp two; 17. Sleeve block; 18. Slide column; 19. Cylinder; 20. Deflection shaft one; 21. Deflection shaft two; 22. Pawl; 23. Ratchet gear; 24. Detection probe; 25. Rack; 26. Connecting disc; 27. Torsion spring; 28. Connecting rod; 29. ​​Slide clamp three; 30. Collar. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-5 The present invention provides a technical solution: A defect detection device for label production and processing includes a detection box 1. The detection box 1 protects the detection environment and reduces external interference. The detection box 1 is only opened when defective labels need to be removed. The detection box 1 has two slots 2, which serve as the inlet and outlet of the label tape, respectively. During production, the labels are sequentially pasted onto a long conveyor belt with a certain distance between them to facilitate subsequent cutting. This conveyor belt structure also improves the collection and transportation efficiency of the labels. A vertical plate 3 is connected inside the detection box 1, vertically connected to the bottom surface of the detection box 1. A connecting shaft 5 is connected to the vertical plate 3, and a roller 6 is rotatably connected to the connecting shaft 5. There are two connecting shafts 5, both vertically connected to the vertical plate 3 and positioned on the same horizontal plane. An installation strip 10 is slidably connected to one side of the vertical plate 3, positioned above the label conveyor belt. A detection probe 24 is slidably connected to the installation strip 10. The detection probe 24 moves above the label, capturing the label image and comparing it with a standard image to identify the defective label. To determine if the label has defects, the detection probe 24 directly adopts existing technology. Since the label is stationary during detection, the requirement for detection accuracy is greatly reduced. One end of the roller 6 is connected to a ratchet 23, which rotates synchronously with the roller 6. When the roller 6 rotates, it can drive the label conveyor belt to move. A slide rail 15 is slidably connected to one side of the vertical plate 3. A connecting rod 28 is connected to one side of the slide rail 15. A connecting plate 26 is connected to the connecting rod 28. A rack 25 is connected to one side of the connecting plate 26 through a torsion spring 27. Spring 27 enables rack 25 to deflect toward ratchet 23. When rack 25 moves upward, it synchronously drives ratchet 23 to rotate. When rack 25 moves downward, ratchet 23 does not rotate. At this time, rack 25 is in a small-amplitude repetitive deflection state, and the deflection direction is away from ratchet 23. Rack 25 is rotatably connected to connecting rod 28. Slide rail 3 15 is connected to a drive mechanism that first drives rack 25 to drive ratchet 23 to rotate, and then drives detection probe 24 to detect the label on roller 6.

[0020] Specifically, such as Figure 2 As shown, a slide rail 7 is connected to the vertical plate 3. The slide rail 7 is set horizontally, and a sliding clamp 8 is slidably connected to the slide rail 7. The mounting strip 10 is fixedly connected to one side of the sliding clamp 8. The stability of the horizontal movement of the mounting strip 10 is improved by setting the sliding clamp 8.

[0021] Specifically, such as Figure 2As shown, one end of the slide rail 7 is connected to the limiting end 13, and a slide rod 11 is slidably connected to the limiting end 13. A spring 12 is sleeved on the outside of the slide rod 11. The two ends of the spring 12 are respectively connected to the limiting end 13 and the slide clamp 8. During the detection, the slide clamp 8 can push the slide rod 11 to slide on the limiting end 13. At this time, the spring 12 structure will be further compressed. The mounting strip 10 drives the detection probe 24 to move on the label conveyor belt to realize the detection of label defects. When the detection is completed, when the actuating rod 9 is not subjected to external force, the spring 12 can push the mounting strip 10 structure to reset.

[0022] Specifically, such as Figure 4 As shown, a deflection shaft 21 is connected to one side of the vertical plate 3. The deflection shaft 21 is connected to a pawl 22 via a torsion spring 27. One end of the pawl 22 is engaged with the ratchet gear 23. By setting the pawl 22, the ratchet gear 23 can be prevented from rotating clockwise, that is, the rotation direction of the roller 6 that drives the label conveyor belt is fixed, avoiding the problem of directional movement. The torsion spring 27 at this point can force the pawl 22 to deflect towards the ratchet gear 23.

[0023] Specifically, such as Figure 3 As shown, a slide rail 2 14 is connected to one side of the vertical plate 3. A slide clamp 3 29 is slidably connected to the slide rail 2 14. The slide clamp 3 29 is fixedly connected to the slide rail 3 15. By setting the structure of slide rail 2 14 and slide clamp 3 29, the stability of the slide rail 3 15 moving up and down is improved.

[0024] Specifically, such as Figure 3 and Figure 4 As shown, the driving mechanism includes a cylinder 19, one end of which is rotatably connected to a vertical plate 3. A bending groove 4 is provided on the vertical plate 3. The bending groove 4 is L-shaped. A sliding column 18 is slidably connected to the bending groove 4. The sliding column 18 can move along the bending groove 4. When the sliding column 18 moves, it can abut against the actuating rod 9, thereby synchronously driving the actuating rod 9 to move. One end of the sliding column 18 is rotatably connected to the output end of the cylinder 19. A sleeve block 17 is rotatably connected to the sliding column 18. The sleeve block 17 is slidably connected to the slide rail 15. An actuating rod 9 is connected to the sliding clamp 8. The actuating rod 9 is vertically arranged, while the sliding column 18 is horizontally arranged.

[0025] Specifically, such as Figure 3 As shown, one end of the cylinder 19 is connected to a collar 30, and one side of the vertical plate 3 is connected to a deflection shaft 20. The collar 30 is rotatably connected to the deflection shaft 20. The collar 30 is used to improve the stability of the extension and retraction of the cylinder 19. The deflection shaft 20 is vertically connected to the vertical plate 3.

[0026] Specifically, such as Figure 3As shown, a sliding clamp 16 is slidably connected to the slide rail 3 15. The sliding clamp 16 is fixedly connected to the sleeve block 17. By setting the sliding clamp 16, the stability of the sleeve block 17 moving along the slide rail 3 15 is improved.

[0027] In summary, the defect detection device for label production and processing provided in this embodiment can, when it is necessary to detect defects in labels during production and processing, send the label to be detected together with the conveyor belt into the detection box 1. The conveyor belt with the label to be detected is conveyed by the roller 6. During detection, the cylinder 19 is activated, and the cylinder 19 extends to drive the slide column 18 to slide on the bending groove 4. The sleeve block 17 connected to the slide column 18 and the second slide clamp 16 can synchronously pull the slide rail 15 to move upward. The connecting rod 28 connected to one side of the slide rail 15 can synchronously drive the rack 25 to move upward. At this time, the rack 25 pulls the ratchet 23 to rotate, thereby moving the label conveyor belt connected to it, which can transport the label to be detected to the detection station, where the detection station is the label position on the horizontal part of the conveyor belt.

[0028] When the slide column 18 rises to the highest point of the bending groove 4, the cylinder 19 continues to extend. The cylinder 19 can drive the slide column 18 to start moving horizontally. The slide rail 15 remains at a constant horizontal height, the ratchet 23 stops rotating, and the slide column 18 can abut against the actuating rod 9 and push the actuating rod 9 to move horizontally. At this time, the direction of movement of the actuating rod 9 is towards the limit end 13. As the actuating rod 9 moves, it can drive the mounting strip 10 to move. At the same time, the spring 12 structure is compressed. The horizontally moving mounting strip 10 drives the detection probe 24 to perform defect detection on the label on the conveyor belt.

[0029] When cylinder 19 extends to its maximum position, slide column 18 abuts against one end of bending groove 4. At this time, detection probe 24 also completes the defect detection of the label on the detection station. When a defective label is found, the equipment stops running and prompts the operator to check and replace the label through an audible and visual alarm. After replacement, the operator needs to restart the equipment.

[0030] When cylinder 19 extends to its maximum extent, it will then begin to retract. At this time, the detection probe 24 will complete the structural reset under the action of spring 12, and the rack 25 will also complete the structural reset after repeated small-amplitude deflections. During normal operation of the equipment, cylinder 19 is in a continuous reciprocating extension and retraction state. The extension and retraction speed is directly proportional to the label detection efficiency, but inversely proportional to the label detection accuracy. During equipment installation and operation debugging, the extension and retraction rate of cylinder 19 needs to be adjusted according to the actual operating environment.

[0031] This inspection device abandons the detection mode of continuously moving labels. By alternating the movement of labels and cameras, motion blur is effectively avoided. There is no need to purchase high frame rate industrial cameras, which not only reduces the initial equipment purchase cost, but also reduces the high daily maintenance and calibration costs of high-precision equipment. The labels can be inspected in a stationary state, which can achieve accurate positioning of defective products. With the fast sorting device, defective labels can be removed and replaced instantly. Compared with traditional dynamic inspection, efficiency is improved, the defect rate is greatly reduced, and label production quality and efficiency are guaranteed.

[0032] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A defect detection device for label manufacturing and processing, comprising a detection box (1), characterized in that, The detection box (1) has a slot (2) and a vertical plate (3) is connected inside the detection box (1). A connecting shaft (5) is connected to the vertical plate (3) and a roller (6) is rotatably connected to the connecting shaft (5). An installation strip (10) is slidably connected to one side of the vertical plate (3) and a detection probe (24) is slidably connected to the installation strip (10). A ratchet gear (23) is connected to one end of the roller (6) and a slide rail (15) is slidably connected to one side of the vertical plate (3). A connecting rod (28) is connected to one side of the slide rail three (15), and a connecting plate (26) is connected to the connecting rod (28). A rack (25) is connected to one side of the connecting plate (26) via a torsion spring (27). The rack (25) is rotatably connected to the connecting rod (28). A drive mechanism is connected to the slide rail three (15) to first drive the rack (25) to drive the ratchet gear (23) to rotate, and then drive the detection probe (24) to detect the label on the roller (6).

2. The defect detection device for label production and processing according to claim 1, characterized in that, The vertical plate (3) is connected to a slide rail (7), and a sliding clamp (8) is slidably connected to the slide rail (7). The mounting strip (10) is fixedly connected to one side of the sliding clamp (8).

3. The defect detection device for label production and processing according to claim 2, characterized in that, One end of the slide rail (7) is connected to a limiting end (13), and a slide rod (11) is slidably connected to the limiting end (13). A spring (12) is sleeved on the outside of the slide rod (11), and the two ends of the spring (12) are respectively connected to the limiting end (13) and the slide clamp (8).

4. The defect detection device for label production and processing according to claim 1, characterized in that, One side of the vertical plate (3) is connected to a deflection shaft (21), and the deflection shaft (21) is connected to a pawl (22) via a torsion spring (27). One end of the pawl (22) is engaged with a ratchet gear (23).

5. A defect detection device for label production and processing according to claim 1, characterized in that, The vertical plate (3) is connected to a slide rail two (14) on one side, and a slide clamp three (29) is slidably connected on the slide rail two (14), and the slide clamp three (29) is fixedly connected to the slide rail three (15).

6. A defect detection device for label production and processing according to claim 1, characterized in that, The driving mechanism includes a cylinder (19), one end of which is rotatably connected to a vertical plate (3). A bending groove (4) is provided on the vertical plate (3). A sliding column (18) is slidably connected to the bending groove (4). One end of the sliding column (18) is rotatably connected to the output end of the cylinder (19). A sleeve block (17) is rotatably connected to the sliding column (18). The sleeve block (17) is slidably connected to the slide rail three (15). A toggle rod (9) is connected to the sliding clamp one (8).

7. A defect detection device for label production and processing according to claim 6, characterized in that, One end of the cylinder (19) is connected to a collar (30), and one side of the vertical plate (3) is connected to a deflection shaft (20). The collar (30) is rotatably connected to the deflection shaft (20).

8. A defect detection device for label production and processing according to claim 6, characterized in that, The slide rail three (15) is slidably connected to the slide clip two (16), and the slide clip two (16) is fixedly connected to the sleeve block (17).

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