Labeling head and labeling machine for corrugated plate of container

Abstract

The invention discloses a labeling head and a labeling machine for a corrugated plate of a container, and belongs to the technical field of labeling. At least one corrugated unit is arranged on the labeling surface of the labeling head, each corrugated unit comprises a first convex ridge and a first groove which are connected with each other, and each corrugated plate comprises a plurality of second convex ridges and second grooves which are alternately arranged; the shapes of the first convex ridge and the first groove are respectively matched with the shapes of the second groove and the second convex ridge; wave pitches of the corrugated units and the corrugated plates are equal; the bottom length of the first groove is greater than the top length of the second convex ridge; during labeling, the bottom of the first groove is in press fit with the top of the second convex ridge, and the top of the first convex ridge is in press fit with the bottom of the second groove. The labeling head can be customized according to the geometrical characteristics of the corrugated plate of the container, the labeling flatness can be remarkably improved, the labeling quality is improved, the labeling efficiency is improved, and the labeling cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of labeling, in particular to a labeling head for a corrugated plate of a container and a labeling machine. BACKGROUND

[0002] In the process of container manufacturing, the completed production box needs to be pasted with various functional labels, such as box number, nameplate, safety certification mark, etc., as its identity certificate in the global logistics system. The pasting position of these labels is usually located on the side wall or end wall of the container, and the outer wall of the modern standard dry cargo container generally adopts a corrugated steel plate structure, that is, a vertical corrugated surface composed of periodic ridges and grooves alternately. This structure is mainly used to improve the bending stiffness and overall strength of the box body, but at the same time it also brings significant technical challenges to label pasting.

[0003] At present, most container manufacturing enterprises in the industry still use manual labeling method: the operator holds the label and performs positioning, pressing and smoothing operations on the surface of the box body several meters high. Due to the existence of corrugated surface with height fluctuation, manual operation cannot ensure that the label completely fits the base material when crossing the wave crest and wave trough, often causing problems such as air bubbles, edge lifting, partial delamination, etc., especially after changes in temperature and humidity or long-distance transportation vibration, the label is easy to fall off or the information is blurred, affecting the reading accuracy of the subsequent port automatic identification system.

[0004] Therefore, it is urgent to provide a new type of labeling head structure which can actively adapt to the geometric characteristics of the corrugated plate of the container, thereby improving the fitting quality. At the same time, the labeling head should have a modular or standardized interface, so that it can be conveniently integrated into manual tools, semi-automatic tooling or fully automatic robot systems to meet the application requirements under different automation levels. The present application is proposed in this background. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a labeling head for a corrugated plate of a container and a labeling machine to solve the above-mentioned defects of the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides a labeling head for a corrugated plate of a container, the labeling surface of the labeling head is provided with at least one corrugated unit, the corrugated unit comprises a first ridge and a first groove connected to each other, and the corrugated plate comprises a plurality of second ridges and second grooves arranged alternately; the shape of the first ridge is adapted to the second groove, and the shape of the first groove is adapted to the first ridge; The wave distance of the corrugated unit is equal to the wave distance of the corrugated plate; the length of the bottom of the first groove in the wave extension direction is greater than the length of the top of the second ridge in the wave extension direction; during labeling, the bottom of the first groove is pressed together with the top of the second ridge, and the top of the first ridge is pressed together with the bottom of the second groove; The surface of the corrugated unit is provided with a negative pressure air hole.

[0007] In the labeling head for the corrugated plate of the container according to the present application, the wave height of the corrugated unit is greater than the wave height of the corrugated plate, and the surface of the corrugated unit is provided with a flexible material layer.

[0008] In the labeling head for the corrugated plate of the container according to the present application, at least one side of the first ridge is provided with a paper guide sheet for limiting the label; during labeling, the paper guide sheet is retracted.

[0009] The present application also provides a labeling machine for the corrugated plate of the container, which comprises the labeling head as described above, and further comprises a labeling robot, wherein the labeling head is fixed at the end of the mechanical arm of the labeling robot.

[0010] In the labeling machine for the corrugated plate of the container according to the present application, the labeling machine further comprises a visual positioning system for accurately positioning the labeling position.

[0011] In the labeling machine for the corrugated plate of the container according to the present application, the labeling machine further comprises a label pressing roller for pressing the label and extruding the air between the label and the corrugated plate.

[0012] In the labeling machine for the corrugated plate of the container according to the present application, the label pressing roller is provided with a pressing roller made of flexible material, which is sequentially provided with a first cylindrical section, a conical section and a second cylindrical section along the axial direction thereof, the diameter of the first cylindrical section is smaller than the diameter of the second cylindrical section, and the first cylindrical section, the conical section and the second cylindrical section are respectively matched with the profile of the second ridge, the second transition part and the second groove of the corrugated plate, so that the label is uniformly attached to the surface of the corrugated plate during the rolling process.

[0013] In the labeling machine for the corrugated plate of the container according to the present application, the labeling machine further comprises a label output device. The label output device is used to provide the label for the labeling head; a label sensor is arranged near the label path of the label output device; a pressing rod is arranged below the label path, the position of the pressing rod corresponds to the position of the bottom of the first groove, and the pressing rod is used to press the straightened label to the negative pressure air hole at the bottom of the first groove after the labeling head reaches the labeling position. The pressing surface of the pressing rod is matched with the shape of the bottom of the first groove.

[0014] In the labeling machine for the corrugated plate of the container according to the present application, the label output device further comprises a release rod for separating the pressed label from the release paper.

[0015] The present application has the following beneficial effects: The labeling head of the present application is provided with at least one corrugated unit, which comprises first ridges and first grooves connected with each other, and a corrugated plate comprising a plurality of second ridges and second grooves arranged alternately; the shapes of the first ridges and the first grooves are adapted to the shapes of the second grooves and the second ridges respectively; the wave distance of the corrugated unit is equal to that of the corrugated plate; the length of the bottom of the first grooves is greater than the length of the top of the second ridges; during labeling, the bottom of the first grooves is pressed against the top of the second ridges, and the top of the first ridges is pressed against the bottom of the second grooves. The labeling machine comprises the labeling head and a label output device, which is provided with a pressing rod for pressing the straightened label against the negative pressure air holes on the bottom of the first grooves after the labeling head reaches the labeling position. The labeling head and the labeling machine of the present application can be customized according to the geometric characteristics of the corrugated plate of the container, and can significantly improve the labeling flatness, improve the labeling quality, improve the labeling efficiency, and reduce the labeling cost. The labeling head can also be used in cooperation with the labeling robot to realize semi-automatic and automatic labeling to meet the application requirements under different automation levels. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0017] Figure 1 The labeling head is provided with a three-dimensional structure.

[0018] Figures 2-3 The labeling head and the container side wall are provided with a top view.

[0019] Figures 4-5 The labeling machine is provided with a structure.

[0020] Figures 6-9 The labeling head is provided with a labeling process.

[0021] In the drawings: 10, labeling head; 11, first ridge; 12, first groove; 13, first transition; 14, negative pressure air hole; 15, paper guide; 20, corrugated plate of container; 21, second ridge; 22, second groove; 23, second transition; 30, labeling robot; 31, mechanical arm; 40, visual positioning system; 50, label pressing roller; 60, label output device; 61, label sensor; 62, label path; 63, pressing bar; 64, release bar; 65, label roll; 66, release paper recycling roll; 67, paper feed roller set; 68, peeling roller set. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] The embodiments of the present application will be described in further detail below with reference to the drawings of the specification. It should be understood that the described embodiments are only used for illustrating and explaining the present application, and are not used for limiting the present application.

[0024] As shown in Figures 1-9 , the present application provides a label head 10 for a corrugated plate of a container, a label surface of the label head 10 is provided with at least one corrugated unit, the corrugated unit comprises a first ridge 11 and a first groove 12 connected to each other, the corrugated plate comprises a plurality of second ridges 21 and second grooves 22 arranged alternately; the first ridge 11 is adapted in shape to the second groove 22, and the first groove 12 is adapted in shape to the second ridge 21.

[0025] The pitch of the corrugated unit is equal to the pitch of the corrugated plate; the length of the bottom of the first groove 12 in the direction of the corrugated extension is greater than the length of the top of the second ridge 21 in the direction of the corrugated extension; when labeling, the bottom of the first groove 12 is pressed against the top of the second ridge 21, and the top of the first ridge 11 is pressed against the bottom of the second groove 22; the surface of the corrugated unit is provided with a negative pressure air hole 14.

[0026] Please refer to Figure 1 , Figure 1 for a schematic diagram of the three-dimensional structure of the label head. The corrugated label surface is arranged on a rectangular base, the corrugations extend along the long direction of the rectangular base, and the width of the corrugations is the same as the width of the rectangular base. In actual application, multiple labels of different sizes may need to be pasted on the same container, the width of the rectangular base is set according to the maximum width of the label, and the length of the rectangular base is set according to the maximum length of the label.

[0027] The container sidewalls are all made of corrugated sheet structure. Corrugated sheets come in various specifications, and parameters such as wave height and wave pitch may differ between different specifications. The shape of the protrusions and indentations on the corrugated sheets may also vary. In practical applications, it is necessary to customize labeling heads for corrugated sheets of different specifications according to the solution of the present invention.

[0028] like Figure 2 As shown, in some embodiments of the present invention, the second ridge 21 and the second groove 22 on the corrugated plate 20 present a continuous trapezoidal shape in the horizontal cross section. The crests of the second ridge 21 and the troughs of the second groove 22 are both planar, and adjacent crests and troughs are connected together by a second transition portion 23. In the figure, a represents the wave height of the corrugated plate 20, and b represents the wave pitch of the corrugated plate. Correspondingly, the corrugated unit on the labeling surface of the labeling head 10 provided in the embodiments of the present invention also presents a continuous trapezoidal shape in the horizontal cross section. The crests of the first ridge 11 and the troughs of the first groove 12 are both planar, and adjacent crests and troughs are connected together by a second transition portion 13.

[0029] Because the label has adhesive backing, to prevent wrinkles, when applying it, try to avoid contact between the first transition portion 13 and the second transition portion 23. Therefore, as... Figure 2 , Figure 3 As shown, in this embodiment of the invention, the trough plane length of the first groove 12 is greater than the crest plane length of the second ridge 21, and the crest plane length of the first ridge 11 is less than the trough plane length of the second groove 22. The length is along... Figure 2 , Figure 3 The length in the left-right direction. During labeling, the first groove 12 presses against the second ridge 21, and the first ridge 11 presses against the second groove 22. For example... Figure 3 The diagram shows the effect after pressing. After the label head 10 and the corrugated plate 20 are pressed together, the crest plane of the label head 10 and the trough plane of the corrugated plate 20 are in contact, and the trough plane of the label head 10 and the crest plane of the corrugated plate 20 are in contact. Because the lengths of the crest and trough planes of the two are different, the crest plane of the second ridge 21 can be completely and fully in contact with the trough plane of the first groove 12, and the crest plane of the first ridge 11 can also be completely and fully in contact with the trough plane of the second groove 22. The first transition part 13 and the second transition part 23 are suspended, and the gap between them presents a parallelogram shape in the horizontal section.

[0030] like Figure 1As shown, in the embodiment of the present application, the surface of the corrugated unit is provided with negative pressure air holes 14. In the embodiment of the present application, the labeling head adsorbs the label by means of negative pressure adsorption. The labeling head further comprises a controller and a vacuum generator in communication connection with the controller, and the labeling head is further provided with a negative pressure cavity in communication with the negative pressure air holes 14 and the output end of the vacuum generator. When the label needs to be adsorbed, the controller starts the vacuum generator to adsorb the label on the labeling surface. After the labeling head compacts the label on the corrugated board, the controller stops the vacuum generator to release the adsorption of the label by the labeling head, so as to facilitate the removal of the labeling head 10 from the labeling position.

[0031] In some embodiments of the present application, the wave height of the corrugated unit is greater than the wave height of the corrugated board 20, and the surface of the corrugated unit is provided with a flexible material layer. When the labeling head compacts the label on the corrugated board, the flexible material layer on the surface of the corrugated unit deforms under extrusion. The wave height of the corrugated unit when not extruded is greater than the wave height of the corrugated board, and when extruded, the flexible material layer deforms under extrusion, so that the top of the wave crest of the labeling head and the bottom of the wave trough are in full contact with the top of the wave crest and the bottom of the wave trough of the corrugated board, respectively. In some specific applications, the surface of the corrugated board is provided with reinforcing ribs or other texture structures, and in the process of extrusion, the flexible material layer deforms according to the surface structure of the labeling surface, significantly improving the adhesion of the label on the non-planar surface. In some specific implementation modes of the embodiment of the present application, the bottom surface of the first groove 12 and the top surface of the second ridge 21 are attached with a flexible material layer, that is Figure 3 In some embodiments of the present application, the wave trough plane of the corresponding first groove 12 and the wave crest plane of the first ridge 11 are provided with a flexible material layer, and the first transition part 13 is not provided with a flexible material layer. In some other specific implementation modes of the embodiment of the present application, the entire labeling surface of the labeling head 10 is provided with a flexible material layer.

[0032] As shown in the drawings, Figures 4-9 As shown, the embodiment of the present application further provides a labeling machine for a corrugated board of a container, and the labeling machine comprises the above labeling head 10.

[0033] As shown in the drawings, Figures 4-5 As shown, in some embodiments of the present application, the labeling machine further comprises a label compacting roller 50, which is used to compact the label and extrude the air between the label and the corrugated board 20. After the labeling head 10 compacts the label on the corrugated board 20, the labeling head 10 is removed, and the label compacting roller 50 is used to roll and press the label above the second transition part 23, so as to firmly paste the entire label on the container, while extruding the air to avoid air bubbles. It can be understood that, in addition to rolling and pressing the label part corresponding to the second transition part 23 in the air, the label compacting roller 50 can also roll and press the entire label area as needed, so as to fully extrude the air between the label and the corrugated board 20, and make the label paper more stable.Figure 4 As shown, the label pressing roller 50 is provided with a pressure roller made of flexible material. The pressure roller is provided with a first cylindrical section, a conical section and a second cylindrical section in sequence along its axial direction. The diameter of the first cylindrical section is smaller than the diameter of the second cylindrical section. The first cylindrical section, the conical section and the second cylindrical section are respectively matched with the contours of the second ridge 21, the second transition part 23 and the second groove 22 of the corrugated plate 20, so that the label is evenly attached to the surface of the corrugated plate during the rolling process.

[0034] Understandably, if the label length is less than the length of the crest plane of the second ridge 21, the label can be adsorbed onto the trough plane of the first groove 12 by the labeling head 10, and then pressed onto the crest plane of the second ridge 21, without the need to use the label pressing roller 50 for rolling.

[0035] like Figure 1 As shown, in some embodiments of the present invention, at least one side of the first ridge 11 is provided with a guide sheet 15 for limiting the label; during labeling, the guide sheet 15 retracts. When the labeling head 15 moves, the guide sheet 15 is in an extended state, which can effectively prevent the label from shifting laterally, thereby improving the labeling accuracy. During labeling, the label is pressed against the corrugated plate, and the guide sheet 15 automatically retracts to prevent it from sticking to the corrugated plate or affecting the labeling effect. Specifically, a pressure sensor can be provided on the labeling head to automatically control the extension and retraction of the guide sheet 15 according to the pressure value; or a simple spring structure can be used.

[0036] like Figures 4-5 As shown, in some embodiments of the present invention, the labeling machine further includes a labeling robot 30, and the labeling head 10 is fixed to the end of the robotic arm 31 of the labeling robot 30. In practical applications, the labeling head 10 can be fixed to the end of the robotic arm 31 of the labeling robot 30. The labeling robot 30 is communicatively connected to a controller, which controls the movement of the robotic arm 31 of the labeling robot 30 to change the position and angle of the labeling head in the XYZ directions, thereby achieving precise labeling.

[0037] like Figures 4-5 As shown, in some embodiments of the present invention, the labeling machine further includes a vision positioning system 40, which is used to accurately locate the labeling position. Figure 4 , Figure 5 In this system, the visual positioning system 40 is fixed to the base of the labeling head 10 to identify and collect the labeling position information. In practical applications, the visual positioning system 40 can also be set up independently of the labeling robot 30. The visual positioning system 40 is connected to the controller and feeds back the collected labeling position information to the controller.

[0038] like Figure 4 , Figure 5As shown in the figure, in some embodiments of the present application, the label pressing roller 50 is arranged on the side of the bottom end of the labeling head 10. During labeling, the labeling surface of the labeling head 10 is parallel to the surface of the corrugated board 20. After the label is pressed, the labeling robot 30 controls the labeling head to rotate 90 degrees, and the label pressing roller 50 is rotated to a position parallel to the surface of the corrugated board 20, and then the label pressing roller 50 is driven to roll the label. The driving mode of the labeling head can be pneumatic, hydraulic or electric.

[0039] As shown in the figure, Figures 4-9 In an embodiment of the present application, the labeling machine further comprises a label output device 60; the label output device 60 is used to provide labels for the labeling head 10; and a label sensor 61 is arranged near the label path 62 of the label output device 60. The label sensor 61 is used to detect the position of the label, and if it is detected that the label has reached the label outlet, the labeling head 10 is informed to take the label.

[0040] A pressing rod 63 is arranged below the label path 62, the position of the pressing rod 63 corresponds to the position of the bottom of the first groove 12, and the pressing rod 63 is used to press the straightened label onto the negative pressure air hole 14 at the bottom of the first groove 12 after the labeling head 10 reaches the label taking position. The pressing surface of the pressing rod 63 is adapted to the shape of the bottom of the first groove 12. As shown in the figure, Figures 6-9 As shown in the figure, the labeling surface of the labeling head 10 is provided with three first grooves 12, and one pressing rod 63 is arranged below each first groove 12. The bottom of the first groove 12 is a flat surface, and the pressing surface of the pressing rod 63 is also a flat surface. The width of the pressing surface is slightly wider than the width of the air hole area on the flat surface of the bottom of the first groove 12. The surface of the pressing rod 63, especially the pressing surface and the corner area, is a smooth surface, which facilitates smooth sliding with the paper during pressing to maintain the tensioned state and prevent wrinkles.

[0041] As shown in the figure, Figure 4 , Figure 5As shown, in some embodiments of the present invention, the label output device 60 and the labeling robot 30 are arranged on the same plane to facilitate the labeling robot controlling the labeling head 10 to move to the label outlet of the label output device 60. In practical applications, both can be placed together on a desktop or stand to adapt to different labeling positions. In some embodiments of the present invention, the label output device 60 is a label printer that prints labels on-site according to the labeling requirements; and the controller in the label printer can act as the controller of the entire labeling machine, controlling the movement of the labeling robot's robotic arm and receiving position information fed back by the vision positioning system. In other embodiments of the present invention, the label output device 60 contains a label roll made of pre-made label paper. In still other embodiments of the present invention, multiple label output devices 60 are included, such as multiple label printers, or multiple label peeling devices containing pre-made label rolls, or both label printers and label peeling devices containing pre-made label rolls are included. The controller controls the labeling robot 30 to different positions to receive labels of different types and sizes, and then affixes them to the corresponding positions on the corrugated plate as needed.

[0042] like Figures 6-9 As shown, in some embodiments of the present invention, the label output device 60 further includes a release rod 64 for separating the pressed label from the release paper. Figures 6-9 In this process, the release rod 64 is disposed on one side of the release paper of the label. The cross-section of the release rod 64 is rhomboid, which can more efficiently peel off the release paper on the back of the label compared to other shapes.

[0043] like Figures 6-9 As shown, the label output device 60 also includes a label roll 65, a release paper recovery roll 66, a paper feed roller group 67, and a peeling roller group 68. The label roll 65 is formed by winding labels attached to release paper, and the release paper recovery roll 67 is formed by winding peeled release paper. The paper feed roller group 67 is used to transport the labels on the label roll to the label outlet, the peeling roller group 68 is used to generate the tension required for peeling, and the release paper recovery roll 66 is used to wind up the peeled release paper.

[0044] Please refer to Figures 6-9 , Figures 6-9 This demonstrates the main process of attaching the label to the labeler. For example... Figure 6 As shown, the labeling head 10 reaches the label receiving position, with the labeling surface facing down and close to the label outlet. The controller activates the vacuum generator, adsorbing the label onto the negative pressure air hole of the first ridge 11. Figure 7 As shown, the pressing rod rises, pressing the taut label against the negative pressure air hole 14 on the first groove 12 of the labeling head, so that the label is completely adhered to the labeling surface. Figure 1 As shown, in some embodiments of the present invention, the entire surface of the labeling surface is provided with negative pressure air holes 14, so after the pressing rod presses, the entire label will be completely adsorbed onto the labeling surface.Figure 8 As shown, after the label is attached to the labeling surface, the pressing rod is lowered, the release rod 64 is moved along the extending direction of the corrugated surface of the labeling surface, and the release roller group pulls the release paper to peel the label surface paper from the release paper. As shown, Figure 9 As shown, the release paper is partially peeled. After the release paper is completely peeled, the labeling head 10 can leave the labeling position.

[0045] It can be understood that the labeling head 10 provided by the embodiment of the present application can be used in cooperation with the labeling robot 30 and the visual positioning system 40 to realize semi-automatic or automatic labeling, or can be used independently of the labeling robot 30 and the visual positioning system 40. For occasions without the labeling robot 30 and the visual positioning system 40, the labeling head 10 provided by the embodiment of the present application can be used independently or in combination with the label pressing roller 50, which can significantly improve the labeling flatness, reduce bubbles, angle warping and other problems, and improve the reliability and service life of the label.

[0046] In another embodiment of the present application, the corrugated units on the labeling surface of the labeling head 10 present a continuous rectangle in the horizontal section. This type of labeling head 10 is suitable for a corrugated plate presenting a continuous rectangle in the horizontal section. The structure of the labeling surface of the labeling head 10 is similar to that of the Figure 1 According to the structural characteristics of the corrugated plate, the transition surface between the first ridge 11 and the first groove 12 is perpendicular to the wave crest plane of the first ridge 11 and the wave trough plane of the first groove 12.

[0047] In another embodiment of the present application, the corrugated units on the labeling surface of the labeling head 10 present a continuous arc in the horizontal section. This type of labeling head 10 is suitable for a corrugated plate presenting a continuous arc in the horizontal section. The structure of the labeling surface of the labeling head 10 is similar to that of the Figure 1 According to the structural characteristics of the corrugated plate, the wave crest of the first ridge 11 and the wave trough of the first groove 12 are arc surfaces. The pressing surface of the pressing rod 64 is adapted according to the shape of the corresponding first groove 12.

[0048] The above is only a specific embodiment of the present application, which cannot be used to limit the scope of the present application. Equivalent changes made by those skilled in the art based on the present application, and changes well known in the art, should still fall within the scope of the present application.

Claims

1. A labeling head for corrugated container panels, characterized in that, the labeling surface of the labeling head (10) is provided with at least one corrugated unit, the corrugated unit comprises first ridges (11) and first grooves (12) connected to each other, and the corrugated panel comprises a plurality of second ridges (21) and second grooves (22) arranged alternately; the first ridges (11) are adapted to the shape of the second grooves (22), and the first grooves (12) are adapted to the shape of the second ridges (21); the pitch of the corrugated unit is equal to the pitch of the corrugated panel; the length of the bottom of the first grooves (12) in the direction of the corrugated extension is greater than the length of the top of the second ridges (21) in the direction of the corrugated extension; during labeling, the bottom of the first grooves (12) is pressed against the top of the second ridges (21), and the top of the first ridges (11) is pressed against the bottom of the second grooves (22); the surface of the corrugated unit is provided with negative pressure air holes (14).

2. A labelling head for corrugated sheeting for containers according to claim 1, characterised in that, the height of the corrugated unit is greater than the height of the corrugated panel (20), and the surface of the corrugated unit is provided with a layer of flexible material.

3. The labeling head for corrugated panels of containers according to claim 1, characterized in that, at least one side of the first ridges (11) is provided with a paper guide sheet (15) for limiting the label; during labeling, the paper guide sheet (15) is retracted.

4. A labelling machine for corrugated panels of containers, characterised in that, the labeling machine comprises the labeling head according to any one of claims 1-3, and further comprises a labeling robot (30), and the labeling head (10) is fixed to the end of the mechanical arm (31) of the labeling robot (30).

5. The labeling machine for corrugated panels of containers according to claim 4, characterized in that, the labeling machine further comprises a visual positioning system (40) for accurately positioning the labeling position.

6. The labeling machine for corrugated panels of containers according to claim 4, characterized in that, the labeling machine further comprises a label pressing roller (50) for pressing the label and extruding air between the label and the corrugated panel (20).

7. The labeling machine for corrugated panels of containers according to claim 6, characterized in that, the label pressing roller (50) is provided with a pressure roller made of flexible material, and the pressure roller is sequentially provided with a first cylindrical section, a conical section and a second cylindrical section along its axial direction, the diameter of the first cylindrical section is smaller than the diameter of the second cylindrical section, and the first cylindrical section, the conical section and the second cylindrical section are respectively matched with the profile of the second ridges (21), the second transition portions (23) and the second grooves (22) of the corrugated panel (20), so that the label is uniformly attached to the surface of the corrugated panel during rolling.

8. The labeling machine for corrugated panels of containers according to claim 4, characterized in that, the labeling machine further comprises a label output device (60); the label output device (60) is used to provide labels for the labeling head (10); a label sensor (61) is arranged near the label path (62) of the label output device (60); a pressing rod (63) is arranged below the label path (62), the position of the pressing rod (63) corresponds to the position of the bottom of the first grooves (12), and the pressing rod (63) is used to press the straightened label onto the negative pressure air hole (14) at the bottom of the first grooves (12) after the labeling head (10) reaches the labeling position; the pressing surface of the pressing rod (63) is adapted to the shape of the bottom of the first grooves (12).

9. The labeling machine for corrugated panels of containers according to claim 8, characterized in that, The label output device (60) further comprises a stripper bar (64) for separating the pressed label from the release paper.

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