A cigarette package label identification mechanism

Abstract

The utility model discloses a cigarette packing box label identification mechanism belongs to label identification technical field, including main conveying belt and the sub -conveying belt of main conveying belt one side, the image acquisition mechanism for being equipped with on main conveying belt and the sub -conveying belt all is used for identifying the label on packing box, the first rejection mechanism is equipped with in the downstream end of image acquisition mechanism of main conveying belt, the deviation rectifying mechanism that is equipped with in the upstream end of image acquisition mechanism on the sub -conveying belt is still equipped on the sub -conveying belt, control the first rejection mechanism will corresponding packing box move to the sub -conveying belt, the utility model discloses a first label identification to packing box through the image acquisition mechanism on main transmission belt, if unqualified after first rejection mechanism will packing box move to the sub -conveying belt, then after position correction through deviation rectifying mechanism carries out secondary image acquisition, reduces the wrong detection phenomenon that packing box deviates appears because of vibration when conveying etc.

Description

Technical Field

[0001] This utility model relates to the field of label recognition technology, and in particular to a cigarette packaging box label recognition mechanism. Background Technology

[0002] In the cigarette packaging production process, the labels on the surface of the packaging boxes carry key information such as product traceability codes, production dates, and brand logos. The complete identification of this information is a core prerequisite for subsequent product traceability and quality control. Therefore, packaging box label recognition devices have become one of the core equipment in packaging production lines. Currently, the mainstream packaging box label recognition solutions in the industry generally use conveyor belts to transport packaging boxes. The conveying speed is usually 2-3 packs / second, and some high-speed production lines can reach 5 packs / second. An image recognition mechanism is installed at a fixed station on the conveyor belt to photograph and recognize the packaging box labels during the transport process. If problems such as label misalignment or printing defects are detected, the unqualified packaging boxes are directly rejected by the rejection mechanism.

[0003] To adapt to the high-speed conveying rhythm, existing solutions typically do not have complex correction mechanisms on the conveyor belt. The high-speed moving packaging box is prone to severe friction with the correction structure, which may cause wrinkles in the packaging paper and wear on the label. Vibrations generated during conveying may also cause deviations in the paper delivery. As a result, when the packaging box is delivered to the image acquisition mechanism for label recognition, the image acquisition mechanism cannot accurately identify the complete label and judges it as a defective product for rejection. To address the above problems, we propose a cigarette packaging box label recognition mechanism. Utility Model Content

[0004] This utility model provides a cigarette packaging box label recognition mechanism to solve the aforementioned technical problems.

[0005] The present invention adopts the following technical solution: it includes a main conveyor belt and a secondary conveyor belt located on one side of the main conveyor belt. Both the main conveyor belt and the secondary conveyor belt are equipped with image acquisition mechanisms for recognizing labels on packaging boxes. The main conveyor belt has a first rejection mechanism located downstream of the image acquisition mechanism. The secondary conveyor belt also has a correction mechanism located upstream of the image acquisition mechanism. It also includes a controller. The controller is used to receive image signals from the label recognition mechanism on the main conveyor belt and, when it determines that the label is not within a reasonable range, control the first rejection mechanism to move the corresponding packaging box to the secondary conveyor belt. After the position is corrected by the correction mechanism, the packaging box is subjected to secondary recognition detection by the image acquisition mechanism on the secondary conveyor belt. The downstream end of the image acquisition mechanism on the secondary conveyor belt is equipped with a second rejection mechanism for rejecting packaging boxes that fail the secondary recognition.

[0006] Furthermore, both the first rejection mechanism and the second rejection mechanism include a vertical telescopic member and a horizontal telescopic member connected to the movable end of the vertical telescopic member. The movable end of the horizontal telescopic member is connected to an air column, which is provided with multiple suction cups, and a vacuum pump for generating negative pressure on the suction cups is connected to the air column.

[0007] Furthermore, it also includes a counting module and an alarm. Both the counting module and the alarm are electrically connected to the controller and are used to count the number of rejections by the second rejection mechanism within a preset time. When the number of rejections counted by the counting module reaches a preset threshold, the controller controls the alarm to issue an alarm signal.

[0008] Furthermore, the correction mechanism includes a bidirectional lead screw rotatably connected to the secondary conveyor belt and a correction plate threaded to both ends of the bidirectional lead screw. The secondary conveyor belt is provided with a guide rod slidably connected to the correction plate and a servo motor for driving the bidirectional lead screw to rotate.

[0009] Furthermore, both of the corrective plates have smooth surfaces on opposite sides, and the distance between the bottom of the corrective plate and the auxiliary conveyor belt is less than the height of the conveying packaging box.

[0010] Furthermore, the conveying speed of the secondary conveyor belt is less than the conveying speed of the main conveyor belt.

[0011] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: In this invention, the packaging box is initially labeled using an image acquisition mechanism on the main conveyor belt. If the label is not found to be qualified, the first rejection mechanism moves the packaging box to the secondary conveyor belt. After the position is corrected by the correction mechanism, a second image acquisition is performed. If the image is qualified, it is considered normal and continues to be conveyed downwards. If the image is not qualified, it indicates that there is a problem with the label image printing and the product is defective. It is then rejected by the second rejection mechanism, which reduces the false detection phenomenon caused by the packaging box shifting due to vibration and other reasons during conveying. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a schematic diagram of the structure of the packaging box of this utility model during transportation; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 The system framework provided in this utility model Figure 1 ; Figure 6 The system framework provided in this utility model Figure 2 .

[0013] Figure Labels

[0014] 1. Main conveyor belt; 2. Auxiliary conveyor belt; 3. Image acquisition mechanism; 4. First rejection mechanism; 4. Second rejection mechanism; 41. Vertical telescopic component; 411. Horizontal telescopic component; 412. Air column; 413. Suction cup; 414. Vacuum pump; 415. Correction mechanism; 5. Bidirectional lead screw; 51. Correction plate; 52. Servo motor; 53. Guide rod; 54. Controller; 6. Counting module; 7. Alarm; 8. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] This utility model embodiment provides a cigarette packaging box label recognition mechanism, including a main conveyor belt 1 and a secondary conveyor belt 2 located on one side of the main conveyor belt 1. Both the main conveyor belt 1 and the secondary conveyor belt 2 are equipped with image acquisition mechanisms 3 for recognizing labels on the packaging boxes. The image acquisition mechanism 3 can use industrial cameras or similar devices to recognize the labels on the packaging boxes. The specific image acquisition method is existing technology, which should be known to those skilled in the art and is not the inventive point of this solution; therefore, it will not be described in detail. When the packaging box being conveyed on the main conveyor belt 1 experiences positional deviation due to conveying vibration or other reasons, and moves below the image acquisition mechanism 3, the label on the packaging box cannot be completely recognized by the image acquisition mechanism 3, which may lead to false detection. A first rejection mechanism 4 is located downstream of the image acquisition mechanism 3 on the main conveyor belt 1 to reject the label. Therefore, on the secondary conveyor belt... The conveyor belt 2 is also equipped with a correction mechanism 5 located upstream of the image acquisition mechanism 3 on the secondary conveyor belt 2, and a controller 6. When the image acquisition mechanism 3 on the main conveyor belt 1 detects an error in the packaging box label, it controls the first rejection mechanism 4 to move the corresponding packaging box to the secondary conveyor belt 2. Then, the correction mechanism 5 corrects the position of the cardboard box entering the secondary conveyor belt 2 and it enters the downstream image acquisition mechanism 3 for secondary label recognition. If the recognition is normal, it enters the next process normally. If it is still judged as wrong after secondary recognition by the image acquisition mechanism 3 on the secondary conveyor belt 2, it indicates that the label on the secondary packaging box is defective and is a defective product. At this time, the second rejection mechanism 41 located downstream of the image acquisition mechanism 3 on the secondary conveyor belt 2 rejects the packaging box that fails the secondary recognition, so as to reduce the misjudgment caused by label recognition errors due to packaging box position deviation.

[0018] Preferably, both the first rejection mechanism 4 and the second rejection mechanism 41 include a vertical telescopic member 411 and a horizontal telescopic member 412 connected to the movable end of the vertical telescopic member 411. The movable end of the horizontal telescopic member 412 is connected to an air column 413, which is provided with multiple suction cups 414. A vacuum pump 415 is connected to the air column 413 to generate negative pressure in the suction cups 414. The first rejection mechanism 4 and the second rejection mechanism 41 operate on the same principle. Taking the first rejection mechanism 4 as an example, after receiving the start signal from the controller 6, the vertical telescopic member 411 is first activated to move downward so that the suction cups 414 are aligned with the packaging box. The vacuum pump 415 is activated, and the suction cups 414 generate negative pressure to adsorb the packaging box. Then, the adsorbed packaging box is moved to the auxiliary conveyor belt 2 by the horizontal telescopic member 412 to be reset. Both the horizontal telescopic member 412 and the vertical telescopic member 411 can be electric telescopic rods or electric push rods electrically connected to the controller 6.

[0019] Preferably, it also includes a counting module 7 and an alarm 8. Both the counting module 7 and the alarm 8 are electrically connected to the controller 6 and are used to count the number of rejections by the second rejection mechanism 41 within a preset time. The counting module 7 can be an electronic counter or the like, and the number of rejections can be preset. For example, the controller 6 presets "the threshold for the number of rejections within 10 minutes is 5 times". When the number of rejections counted by the counting module 7 reaches the preset threshold, the controller 6 controls the alarm 8 to issue an alarm signal to remind personnel that there may be a batch problem in the printing of packaging box labels in the upstream process, so that timely repairs can be carried out.

[0020] Preferably, the correction mechanism 5 includes a bidirectional lead screw 51 rotatably connected to the secondary conveyor belt 2 and correction plates 52 threadedly connected to both ends of the bidirectional lead screw 51. The secondary conveyor belt 2 is provided with a guide rod 54 slidably connected to the correction plates 52 and a servo motor 53 for driving the bidirectional lead screw 51 to rotate. When the first rejection mechanism 4 is activated, the controller 6 controls the servo motor 53 to operate, causing the bidirectional lead screw 51 to rotate. The two correction plates 52 move relative to each other simultaneously, clamping the misaligned packaging boxes from both sides before proceeding to the next stage for secondary image acquisition. The opposite sides of the two correction plates 52 are smooth surfaces, reducing friction on the packaging box surface when the correction plates 52 contact the packaging box. The minimum distance between the two correction plates 52 and the width of the packaging box during normal transport is minimized to prevent deformation of the packaging box. The distance between the bottom of the correction plate 52 and the secondary conveyor belt 2 is less than the height of the transported packaging box, ensuring that the correction plates 52 can contact the packaging box during relative movement, preventing the packaging box from being located at the bottom of the correction plate 52 and causing an uncorrectable phenomenon.

[0021] Preferably, the conveying speed of the auxiliary conveyor belt 2 is lower than that of the main conveyor belt 1. The main conveyor belt 1 can maintain a high speed to meet the production line capacity requirements, and only divert a small number of misaligned packaging boxes (usually accounting for <5%) to the auxiliary conveyor belt 2. The auxiliary conveyor belt 2 processes these packaging boxes at a low speed, which will not occupy the high-speed conveying resources of the main conveyor belt 1, and on the other hand, the packaging boxes after correction will not shift again due to the large vibration of the conveyor belt during high-speed conveying, thus affecting the secondary image acquisition.

[0022] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cigarette packaging box label recognition mechanism, characterized in that, The system includes a main conveyor belt (1) and a secondary conveyor belt (2) located on one side of the main conveyor belt (1). Both the main conveyor belt (1) and the secondary conveyor belt (2) are equipped with image acquisition mechanisms (3) for recognizing labels on packaging boxes. The main conveyor belt (1) is equipped with a first rejection mechanism (4) located downstream of the image acquisition mechanism (3). The secondary conveyor belt (2) is also equipped with a correction mechanism (5) located upstream of the image acquisition mechanism (3) on the secondary conveyor belt (2). The system also includes a controller (6). The controller (6) is used to receive the image signal from the label recognition mechanism on the main conveyor belt (1) and, when it determines that the label is not within a reasonable range, control the first rejection mechanism (4) to move the corresponding packaging box to the secondary conveyor belt (2). After the position is corrected by the correction mechanism (5), the packaging box is subjected to secondary recognition detection by the image acquisition mechanism (3) on the secondary conveyor belt (2). The downstream end of the image acquisition mechanism (3) on the secondary conveyor belt (2) is equipped with a second rejection mechanism (41) for rejecting packaging boxes that fail the secondary recognition.

2. The cigarette packaging box label identification mechanism according to claim 1, characterized in that, The first rejection mechanism (4) and the second rejection mechanism (41) both include a vertical telescopic member (411) and a horizontal telescopic member (412) connected to the movable end of the vertical telescopic member (411). The movable end of the horizontal telescopic member (412) is connected to an air column (413). The air column (413) is provided with multiple suction cups (414), and the air column (413) is connected to a vacuum pump (415) for generating negative pressure on the suction cups (414).

3. The cigarette packaging box label identification mechanism according to claim 2, characterized in that, It also includes a counting module (7) and an alarm (8). The counting module (7) and the alarm (8) are both electrically connected to the controller (6) and are used to count the number of rejections by the second rejection mechanism (41) within a preset time. When the number of rejections counted by the counting module (7) reaches a preset threshold, the controller (6) controls the alarm (8) to issue an alarm signal.

4. The cigarette packaging box label identification mechanism according to claim 1, characterized in that, The correction mechanism (5) includes a bidirectional lead screw (51) rotatably connected to the secondary conveyor belt (2) and a correction plate (52) threaded to both ends of the bidirectional lead screw (51). The secondary conveyor belt (2) is provided with a guide rod (54) slidably connected to the correction plate (52) and a servo motor (53) for driving the bidirectional lead screw (51) to rotate.

5. The cigarette packaging box label identification mechanism according to claim 4, characterized in that, Both of the two correction plates (52) have smooth surfaces on opposite sides, and the distance between the bottom of the correction plate (52) and the auxiliary conveyor belt (2) is less than the height of the conveyor box.

6. The cigarette packaging box label identification mechanism according to claim 1, characterized in that, The conveying speed of the secondary conveyor belt (2) is less than that of the main conveyor belt (1).

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