An adaptive curved surface labeling device

Abstract

The utility model relates to the technical field of curved surface product packaging automation, concretely relates to a kind of self-adapting curved surface labeling device, comprising: main frame, its top is workstation;Mobile assembly, it includes the first linear module along Y direction extension, the second linear module along X direction extension, the third linear module along Z direction telescoping;Labeling assembly, it includes the second connecting seat of connecting third linear module, the second connecting seat is connected with label transfer part, still be connected with label compression part, the label compression part includes the two wheel stands of symmetrical arrangement, the wheel stand one end is swingably articulated in the second connecting seat, another end rotatably connected with roller, two the wheel stand between connection is used to provide elastic element of reset force;Label printing assembly, it includes printer;Conveying line;Through this setting, realize the whole process automation of curved surface product labeling, effectively improve labeling efficiency and labeling quality, avoid the problem that label wrinkle, bubble, edge lifting occurs, effectively improve adaptability.

Description

Technical Field

[0001] This utility model relates to an adaptive curved surface labeling device, belonging to the field of automated packaging technology for curved surface products. Background Technology

[0002] Labeling is a crucial step in the product packaging process, used for product identification, information traceability, and brand display. With the diversification of consumer product designs, packaging containers with complex curved surfaces such as arcs and spheres are increasingly widely used, significantly increasing their market share. Traditional automated labeling equipment is primarily designed for flat products, and its labeling heads are typically fixed flat plates. During use, this reveals significant shortcomings. First, the fixed-shape labeling head cannot adaptively conform to the complex curved contours of products, resulting in gaps between the label and the product surface that are not properly compacted. This easily leads to air bubbles, wrinkles, and edge lifting. Observing defects seriously affects the labeling quality and product grade. If manual labeling is relied upon, it is not only inefficient, but the label position of each product cannot be uniform, and skewed labels may occur. Secondly, the traditional rigid pressing method can cause impact to the product, especially thin-walled or soft plastic shells, which may lead to product deformation or damage. Furthermore, the sliding friction generated when the flat pressing head contacts the curved surface can apply unnecessary horizontal shear force to the label, which may cause the label to slip or twist during the application process, resulting in misalignment. Therefore, it is of great practical significance to study a new type of adaptive curved surface labeling device. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing an adaptive curved surface labeling device.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An adaptive curved surface labeling device, comprising: a main frame, the top of which is a worktable;

[0005] A movable component includes a bracket disposed on the worktable, the bracket having a first linear module extending in the Y direction, a second linear module extending in the X direction slidably disposed on the first linear module, a first connecting seat slidably disposed on the second linear module, and a third linear module extending in the Z direction on the first connecting seat.

[0006] The labeling assembly includes a second connecting seat connected to the moving end of the third linear module. The second connecting seat is connected to a label transfer part and a label pressing part that can adaptively fit the product labeling surface. The label pressing part includes two symmetrically arranged wheel frames. One end of each wheel frame is pivotally hinged to the second connecting seat, and the other end is rotatably connected to a roller. An elastic element for providing a restoring force is connected between the two wheel frames.

[0007] A label printing assembly includes a printer disposed on the worktable, wherein a label receiving platform is provided at the printing exit position of the printer;

[0008] A conveyor line is used to transport products to the labeling station.

[0009] Furthermore, the labeling assembly also includes a hinge seat, the top ends of the two wheel frames are respectively hinged to the hinge seat, and an actuation cylinder is also provided on one side of the second connecting seat, the output end of the actuation cylinder being connected to the hinge seat.

[0010] Furthermore, the label transfer unit includes at least one vacuum suction cup connected to the second connecting seat, the vacuum suction cup being capable of repeatedly blocking or connecting the vacuum source, and it is located between the two wheel frames.

[0011] Furthermore, the vacuum suction cup is connected to a rigid extension tube, the other end of which is connected to a vacuum source. A linear bearing is provided at the bottom of the second connecting seat, the rigid extension tube passes through the linear bearing, and a compression spring for providing preset upward damping is sleeved on its outside. One end of the compression spring abuts against the linear bearing, and the other end abuts against the vacuum suction cup.

[0012] Furthermore, the wheel frame is provided with a connecting post for fixing an elastic element, which is a tension spring or an elastic band.

[0013] Furthermore, the wheel frame is configured as an arc shape, with both wheel frames protruding outwards, and their curvature centers coinciding on their symmetrical neutral surfaces.

[0014] Furthermore, the printer has a base at its bottom, a slider below the base, a slide rail on the worktable, the base slidably connected to the worktable above, and a buffer and a stop are provided at the end of the sliding path of the base.

[0015] Furthermore, a locking block is provided on the side of the base, and a locking cylinder is also provided on the worktable. The output end of the locking cylinder is connected to a mating block. The locking cylinder extends and retracts to drive the mating block to contact or disengage from the locking block, so that the base switches between a locked state and an unlocked state.

[0016] Furthermore, along the conveying direction of the conveyor line, a separating cylinder, a limiting cylinder, and a blocking cylinder are sequentially arranged on the conveyor line. The limiting cylinder corresponds to the labeling station, the separating cylinder is used to push the product behind the labeling station backward by a predetermined distance, the limiting cylinder is used to fix the product position, and the blocking cylinder is used to prevent the product from continuing to move forward.

[0017] Furthermore, a vertical plate is provided on the side of the conveyor line, and a linear bearing is provided on the vertical plate. A connecting rod is passed through the linear bearing. One end of the connecting rod is connected to a baffle that is movably provided on the conveyor line, and the other end of the connecting rod is connected to a first locking plate. A second locking plate is also provided on the vertical plate. A plurality of locking holes are arrayed on the second locking plate, and a locking pin that cooperates with the locking holes is inserted into the first locking plate.

[0018] The beneficial effects of this utility model are as follows: First, by setting up a moving component, this application achieves movement at any position in three-dimensional space, ensuring rapid positioning of the label gripping and pressing position. By setting up a label transfer part, it realizes the spatial transfer and initial alignment of the label from the printing station to the product labeling station. By setting up a label pressing part, it solves the labeling problem of curved products, realizing the adaptive compaction of the label on the curved product. Therefore, this application realizes the full automation of the process of curved products from product transportation, positioning, label printing, gripping to bonding through the synergistic effect between various components. It can be efficiently integrated into automated production lines without manual assistance, effectively improving labeling efficiency and labeling quality. Second, when pressing the label, the roller at the end of the wheel frame first contacts the curved surface of the product. The two wheel frames can adaptively swing around the hinge point. Under the constraint of the elastic element, the line connecting the axes of the two rollers always tends to be parallel to the local curved surface tangent at the contact point, thereby driving the roller to adaptively roll and compact the label along the curved surface of the product instead of sliding and compacting it. This solves the problem that traditional fixed labeling heads cannot be used. Regarding the labeling of curved products, this design ensures labeling quality while avoiding issues such as label wrinkles, bubbles, and curling edges. It also ensures gradual and flexible contact with the product surface, preventing deformation caused by rigid impacts. This makes it suitable for labeling softer plastic materials, effectively improving adaptability. Furthermore, the coordinated use of elastic elements serves both a resetting function, returning the rollers to their initial state after labeling, and providing a certain amount of clamping force during labeling. It also allows for slight relative oscillation between the two rollers when encountering resistance, ensuring that the pressure applied by the rollers follows the product surface deformation to some extent, rather than being a completely constant pressure. This makes it suitable for products with slight localized depressions, further expanding the adaptability range. Finally, by placing rollers at the ends of the rollers, compared to the sliding friction of traditional flat pressure heads, the horizontal shearing force on the label during the labeling process is significantly reduced. During labeling, the rolling compaction does not push the product or pull the label, making the labeling process more stable and further ensuring labeling quality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the curved surface labeling device provided in Embodiment 1 of this utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure at point A in the middle;

[0021] Figure 3 for Figure 1 Another structural diagram from point A in the middle;

[0022] Figure 4 for Figure 3 Enlarged view of the structure at point D;

[0023] Figure 5 This is a schematic diagram of the label clamping part structure provided in Embodiment 1 of this utility model;

[0024] Figure 6 This is a schematic diagram of the installation structure of the label printing component provided in Embodiment 1 of this utility model;

[0025] Figure 7 for Figure 6 Enlarged view of the structure at point E in the middle;

[0026] Figure 8 for Figure 1 Schematic diagram of the structure at point C;

[0027] Figure 9 for Figure 1 Schematic diagram of the structure at point B.

[0028] Reference numerals: 1. Main frame; 2. Workbench; 3. Support; 4. First linear module; 5. Second linear module; 6. First connecting seat; 7. Third linear module; 8. Labeling assembly; 9. Wheel frame; 10. Roller; 11. Elastic element; 12. Connecting column; 13. Printer; 14. Label receiving platform; 15. Conveyor line; 16. Hinge seat; 17. Actuating cylinder; 18. Vacuum suction cup; 19. Rigid extension tube; 20. Linear bearing; 21. Compression spring; 22. Base; 23. Buffer; 24. Stop block; 25. Locking block; 26. Locking cylinder; 27. Fitting block; 28. Separating cylinder; 29. ​​Limiting cylinder; 30. Blocking cylinder; 31. Vertical plate; 32. Connecting rod; 33. Baffle; 34. First locking plate; 35. Second locking plate; 36. Lock hole; 37. Locking column. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below. This utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used is for describing particular embodiments only and is not intended to limit the scope of this invention.

[0031] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Example 1

[0034] like Figure 1-6As shown, this utility model provides an adaptive curved surface labeling device, including: a main frame 1, the top of which is a worktable 2; a moving component, including a bracket 3 disposed on the worktable 2, the bracket 3 being screwed or welded to the worktable 2, the bracket 3 being provided with a first linear module 4 extending along the Y direction, the first linear module 4 being slidably provided with a second linear module 5 extending along the X direction, the second linear module 5 being slidably provided with a first connecting seat 6, the first connecting seat 6 being provided with a third linear module 7 extending and retracting along the Z direction; it should be noted that the linear modules and cylinders described in this application are models well known to those skilled in the art, and the cylinder being connected to an external air source through a pipeline is common knowledge in the art and will not be described in detail hereafter; a labeling component 88, including a second connecting seat 8 connected to the moving end of the third linear module 7, the second connecting seat 8 being connected to a label transfer part, and also connected to a label pressing part capable of adaptively fitting the product labeling curved surface, the label pressing part including two symmetrically arranged wheel frames 9, one end of the wheel frame 9 being able to The first part is pivotally hinged to the second connecting seat 8, and the other end is rotatably connected to a roller 10. An elastic element 11 for providing a restoring force is connected between the two wheel frames 9. A connecting post 12 for fixing the elastic element 11 is provided on the wheel frame 9. The elastic element 11 is a tension spring or elastic band. The label printing assembly includes a printer 13 set on the worktable 2. A label receiving platform 14 is provided at the printing exit position of the printer 13. The label receiving platform 14 is used to receive the printed labels. The label receiving platform 14 is covered with a release film to avoid the problem of sticky notes affecting the transfer. The label transfer part picks up the label from the label receiving platform 14. The printer 13 is a model known to those skilled in the art and will not be described in detail here. The conveyor line 15 connects the upper and lower processes and is used to transport the product to the labeling station. It should be noted that the second connecting seat 8 is provided with a photoelectric sensor for monitoring the position of the label and the product. The conveyor line 15 is provided with a photoelectric sensor for monitoring the position of the product. The photoelectric sensor is a model known to those skilled in the art.

[0035] First, this application achieves rapid label gripping and pressing by setting up a moving component that allows movement at any position in three-dimensional space. By setting up a label transfer unit, it realizes the spatial transfer and initial alignment of the label from the printing station to the product labeling station. By setting up a label clamping unit, it solves the labeling problem on curved products, achieving adaptive compaction of the label on curved surfaces. Therefore, this application automates the entire process of curved product delivery, positioning, label printing, gripping, and application through the synergistic effect of various components, achieving high efficiency. This invention effectively integrates into automated production lines, eliminating the need for manual assistance and significantly improving labeling efficiency and quality. Secondly, during the downward pressure labeling process, the roller 10 at the end of the wheel frame 9 first contacts the curved surface of the product. The two wheel frames 9 can adaptively oscillate around the hinge point. Under the constraint of the elastic element 11, the line connecting the axes of the two rollers 10 always tends to remain parallel to the local tangent of the curved surface at the contact point. This causes the rollers 10 to adaptively roll and compact the label along the curved surface of the product rather than sliding, thus solving the problem that traditional fixed labeling heads cannot be used on curved products. The labeling process ensures labeling quality, avoiding issues like label wrinkles, bubbles, and curling edges. It also ensures gradual and flexible contact with the product surface, preventing deformation caused by rigid impacts. This makes it suitable for labeling softer plastic materials, effectively improving adaptability. Furthermore, the coordinated use of elastic elements 11 serves both a resetting function, returning the roller frame 9 to its initial state after labeling, and providing a certain amount of pressure during labeling. It also allows for slight relative oscillation between the two roller frames 9 when encountering resistance, ensuring that the pressure applied by the roller 10 follows the product surface deformation to some extent, rather than being a completely constant pressure. This makes it suitable for products with slight localized depressions, further expanding the adaptability range. Finally, by placing rollers 10 at the ends of the roller frames 9, compared to the sliding friction of traditional flat pressure heads, the horizontal shear force on the label during the application process is significantly reduced. During labeling, the rolling compaction does not push the product or pull the label, making the application process more stable and further ensuring labeling quality.

[0036] Specifically, such as Figure 2 , 5 As shown, the labeling assembly 88 also includes a hinge seat 16, with the top ends of the two wheel frames 9 respectively hinged to the hinge seat 16. An actuating cylinder 17 is also provided on one side of the second connecting seat 8, and the output end of the actuating cylinder 17 is connected to the hinge seat 16. This configuration allows for independent movement of the label pressing part relative to the third linear module 7. During labeling, the third linear module 7 and the actuating cylinder 17 move synchronously, effectively shortening the stroke of the third linear module 7 while pressing the label, thus extending its service life and improving labeling efficiency.

[0037] Specifically, such as Figure 2-4 As shown, the label transfer unit includes at least one vacuum suction cup 18 connected to the second connecting seat 8. The vacuum suction cup 18 can repeatedly block or connect the vacuum source and is located between the two wheel frames 9. By blocking or connecting the vacuum source, the label can be gripped and released. The label transfer unit is set between the two wheel frames 9. When labeling, the vacuum suction cup 18 adsorbs the label and moves to the center of the product's labeling area. Then, the third linear module 7 moves downward, causing the vacuum suction cup 18 to come into contact with the product. Under the action of downward pressure, the center of the label is pressed against the center of the product's labeling area. At this time, the label is initially fixed. Then, the cylinder 17 drives the label pressing part to press down to adhere the label to the curved surface of the product. Through the synergistic action between the components, the labeling process is realized in steps, avoiding the problem that the label is not initially fixed when the roller 10 contacts and rolls to compact the label, causing the roller 10's rolling friction to push the label to slip. This effectively solves the problems of label wrinkles and offset, and further ensures the labeling quality.

[0038] Specifically, such as Figure 3-4 As shown, the vacuum suction cup 18 is connected to a rigid extension tube 19, the other end of which is connected to a vacuum source. A linear bearing 20 is located at the bottom of the second connecting seat 8. The rigid extension tube 19 passes through the linear bearing 20, and a compression spring 21 is sleeved on its exterior to provide preset upward damping. One end of the compression spring 21 abuts against the linear bearing 20, and the other end abuts against the vacuum suction cup 18. This arrangement allows the vacuum suction cup 18 to move upward relative to the linear bearing 20 after overcoming the preset damping force. The damping force is set to ensure the label's central area is adhered and fixed while preventing the product to be labeled from being deformed. This effectively avoids the problem of the third linear module 7 deteriorating in accuracy after prolonged operation, leading to excessive downward pressure and product deformation.

[0039] Specifically, such as Figure 2 , 3 As shown in Figure 5, the wheel frame 9 is arc-shaped, with both wheel frames 9 convex outwards, and their centers of curvature coincide on their symmetrical neutral planes. It should be noted that... Figure 5The dashed line represents a side view of the neutral surface O of the two wheel frames 9. This design ensures that, firstly, when the wheel frame 9 swings around the hinge point, the movement trajectories of the two rollers 10 are always mirror-symmetrical with respect to the neutral surface. This guarantees that the label is synchronously and evenly pressed from the center to both sides during application, avoiding label shifting or local wrinkling caused by asymmetrical pressure on both sides. Secondly, the arc-shaped structure effectively improves the bending stiffness and stability of the wheel frame 9, making it less prone to plastic deformation or fatigue fracture during frequent swinging and pressing, thus effectively extending its service life. Finally, this design ensures that the downward pressure is always converted into normal pressure perpendicular to the local curved surface of the product, reducing the generation of harmful lateral forces along the tangent direction of the product and effectively avoiding problems such as label slippage, product surface scratches, or local deformation caused by improper force application.

[0040] Specifically, such as Figure 6 , 7 As shown, the printer 13 has a base 22 at its bottom, a slider below the base 22, and a slide rail on the worktable 2. The base 22 is slidably connected to the worktable 2, and a buffer 23 and a stop 24 are provided at the end of the sliding path of the base 22. It should be noted that the slider and slide rail are technologies well known to those skilled in the art, and therefore are not shown in the accompanying drawings. To ensure a compact overall structure and avoid excessive travel of the labeling component 88, the structure around the printer 13 is relatively dense, which would make it inconvenient to change paper after the printing paper runs out. This design allows the printer 13 to move flexibly, so that when the printer 13 runs out of paper, it can slide to an empty position for paper changing, effectively improving paper changing efficiency. By setting the buffer 23 and the stop 24, the consistency of the printer 13 moving back to the working position after paper changing is ensured, thereby ensuring the stability of the printing and label picking process.

[0041] Specifically, such as Figure 7 As shown, a locking block 25 is provided on the side of the base 22, and a locking cylinder 26 is also provided on the worktable 2. The output end of the locking cylinder 26 is connected to a mating block 27. The locking cylinder 26 extends and retracts to drive the mating block 27 to contact or disengage from the locking block 25, so that the base 22 switches between a locked state and an unlocked state. When the base 22 is in the locked state, the printer 13 is in the working position. The shape of the locking block 25 and the mating block 27 is not limited, as long as they can achieve mating and limiting.

[0042] Specifically, such as Figure 9As shown, along the conveying direction of the conveyor line 15, a separating cylinder 28, a limiting cylinder 29, and a blocking cylinder 30 are sequentially arranged on the conveyor line 15. The limiting cylinder 29 corresponds to the labeling station. The separating cylinder 28 is used to push the product behind the labeling station backward by a predetermined distance, leaving sufficient labeling space for the product to be labeled. The limiting cylinder 29 is used to fix the product position, extending to hold the product and prevent it from shaking. The blocking cylinder 30 is used to stop the product from moving forward. The parts of the limiting cylinder 29, separating cylinder 28, and blocking cylinder 30 that come into contact with the product are all covered with flexible polyurethane material. Through this arrangement, this arrangement works in conjunction with the labeling assembly 88 to ensure that the product is accurately fixed from the dynamic conveyor line 15 to the static labeling station, effectively limiting the product's freedom of movement, ensuring the stability of the labeling process, and avoiding label misalignment or offset caused by product shaking or posture deviation, thereby further improving the labeling quality.

[0043] Specifically, such as Figure 8 As shown, a vertical plate 31 is welded or screwed to the side of the conveyor line 15. A linear bearing 20 is mounted on the vertical plate 31, and a connecting rod 32 passes through the linear bearing 20. One end of the connecting rod 32 is connected to a baffle 33 movably mounted on the conveyor line 15, and the other end is connected to a first locking plate 34. A second locking plate 35 is also provided on the vertical plate 31. The second locking plate 35 has a plurality of locking holes 36 arranged in an array. Locking pins 37 that cooperate with the locking holes 36 are inserted into the first locking plate 34. This arrangement allows for flexible adjustment of the width of the conveyor line 15 to accommodate products of different widths, further improving its adaptability.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these modifications and improvements are all within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims.

Claims

1. An adaptive curved surface labeling device, characterized in that, include: The main frame has a workbench on top; A movable component includes a bracket disposed on the worktable, the bracket having a first linear module extending in the Y direction, a second linear module extending in the X direction slidably disposed on the first linear module, a first connecting seat slidably disposed on the second linear module, and a third linear module extending in the Z direction on the first connecting seat. The labeling assembly includes a second connecting seat connected to the moving end of the third linear module. The second connecting seat is connected to a label transfer part and a label pressing part that can adaptively fit the product labeling surface. The label pressing part includes two symmetrically arranged wheel frames. One end of each wheel frame is pivotally hinged to the second connecting seat, and the other end is rotatably connected to a roller. An elastic element for providing a restoring force is connected between the two wheel frames. A label printing assembly includes a printer disposed on the worktable, wherein a label receiving table is provided at the printing exit position of the printer; A conveyor line is used to transport products to the labeling station.

2. The adaptive curved surface labeling device according to claim 1, characterized in that, The labeling assembly also includes a hinge seat, the top ends of the two wheel frames are respectively hinged to the hinge seat, and an actuation cylinder is also provided on one side of the second connecting seat, the output end of the actuation cylinder is connected to the hinge seat.

3. An adaptive curved surface labeling device according to any one of claims 1-2, characterized in that, The label transfer unit includes at least one vacuum suction cup connected to the second connecting seat. The vacuum suction cup can repeatedly block or connect the vacuum source and is located between the two wheel frames.

4. The adaptive curved surface labeling device according to claim 3, characterized in that, The vacuum suction cup is connected to a rigid extension tube, the other end of which is connected to a vacuum source. A linear bearing is provided at the bottom of the second connecting seat. The rigid extension tube passes through the linear bearing and is fitted with a compression spring for providing preset upward damping. One end of the compression spring abuts against the linear bearing, and the other end abuts against the vacuum suction cup.

5. The adaptive curved surface labeling device according to claim 4, characterized in that, The wheel frame is provided with a connecting post for fixing an elastic element, which is a tension spring or an elastic band.

6. The adaptive curved surface labeling device according to claim 5, characterized in that, The wheel frame is configured as an arc shape, with both wheel frames protruding outwards, and their centers of curvature coinciding on their symmetrical neutral surfaces.

7. The adaptive curved surface labeling device according to claim 6, characterized in that, The printer has a base at its bottom, a slider below the base, a slide rail on the worktable, and the base is slidably connected to the worktable above it. A buffer and a stop are provided at the end of the sliding path of the base.

8. The adaptive curved surface labeling device according to claim 7, characterized in that, The base has a locking block on its side, and the worktable has a locking cylinder. The output end of the locking cylinder is connected to a mating block. The locking cylinder extends and retracts to make the mating block contact or disengage from the locking block, so that the base can switch between a locked state and an unlocked state.

9. An adaptive curved surface labeling device according to any one of claims 4-8, characterized in that, Along the conveying direction of the conveyor line, a separating cylinder, a limiting cylinder, and a blocking cylinder are sequentially arranged on the conveyor line. The limiting cylinder corresponds to the labeling station, the separating cylinder is used to push the product behind the labeling station backward by a predetermined distance, the limiting cylinder is used to fix the product position, and the blocking cylinder is used to prevent the product from moving forward.

10. An adaptive curved surface labeling device according to claim 9, characterized in that, A vertical plate is provided on the side of the conveyor line, and a linear bearing is provided on the vertical plate. A connecting rod passes through the linear bearing. One end of the connecting rod is connected to a baffle that is movably provided on the conveyor line, and the other end of the connecting rod is connected to a first locking plate. A second locking plate is also provided on the vertical plate. A plurality of locking holes are arrayed on the second locking plate, and a locking pin that cooperates with the locking holes is inserted into the first locking plate.

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