Labeling mechanism and labeling machine

Abstract

This utility model belongs to the field of packaging box labeling technology, specifically relating to a label pressing mechanism and a labeling machine. The label pressing mechanism of this utility model uses a drive mechanism to continuously rotate a turntable and circumferentially distributed label pressing components, achieving automated label pressing of egg carton labels and significantly improving production efficiency. The label pressing groove is designed according to the shape of the egg carton's upper surface, and in conjunction with the arc-shaped label pressing trajectory of the cam track, the label pressing components cut into the label with a downward arc motion trajectory, forming a progressive rolling pressing method for label pressing, avoiding label friction displacement and label lifting on both sides. When the limiting cam reaches the lowest point of the label pressing trajectory, the label pressing groove applies uniform vertical pressure, resulting in good label adhesion to the egg carton. The linkage design between the cam track and the turntable enables continuous assembly line operation, with a single machine processing efficiency many times that of manual labor, effectively solving problems such as label lifting and poor adhesion in traditional machine labeling.

Description

Technical Field

[0001] This utility model belongs to the field of packaging box labeling technology, specifically relating to label pressing mechanism and labeling machine. Background Technology

[0002] Currently, the irregular shape of egg cartons used in egg packaging presents numerous technical bottlenecks in warehousing, stacking, and labeling processes. While the irregular structure of the cartons meets the protection requirements for eggs, it poses challenges to space optimization. The most prominent problem lies in the labeling process: current production methods rely primarily on manual labeling, leading to three significant drawbacks: high labor costs, high labor intensity for workers, and low overall production efficiency. Even with automated labeling equipment, the non-planar surface of the egg cartons commonly results in labels not adhering firmly or warping at the edges, ultimately requiring manual rework. This technological bottleneck severely restricts the capacity expansion of egg packaging lines, creating a significant gap between the current industry's pursuit of high-efficiency production. Utility Model Content

[0003] The purpose of this invention is to overcome the problem that existing labeling machines have issues such as labels not adhering tightly or lifting up during the labeling process, which still require manual secondary processing. This invention provides a labeling mechanism and labeling machine that can effectively adhere labels to the surface of egg cartons.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The labeling mechanism includes a fixed frame, a labeling assembly, and a drive mechanism. The fixed frame has a circumferentially closed cam track at the front and a drive shaft inside the cam track. A drive chamber is located at the rear of the fixed frame. The cam track includes a labeling trajectory segment at the bottom. The labeling assembly includes a turntable and several labeling components evenly distributed around the outer circumference of the turntable. Each labeling component has a labeling groove with openings at the bottom and sides, and a transfer frame at the top. The shape of the labeling groove is adapted to the shape of the upper surface of the egg carton. One side of the transfer frame is rotatably connected to the outer end of the turntable via a rotating shaft. The other side of the transfer frame has a limiting cam that is inserted into the cam track. The arc-shaped labeling trajectory segment is used to limit the labeling groove of the labeling component to move horizontally in a bottom arc direction via the limiting cam. When the limiting cam is at the lowest point within the arc-shaped labeling trajectory segment, the labeling component presses the label onto the workpiece through the labeling groove. The drive mechanism is located in the drive chamber and is connected to the drive shaft extending into the drive chamber. It is used to drive the turntable to rotate relative to each other. Both ends of the drive shaft are fixed by bearing seats.

[0006] Compared with existing technologies, the label pressing mechanism of this utility model drives the turntable and circumferentially distributed label pressing parts to rotate continuously, realizing automated label pressing of egg carton labels and greatly improving production efficiency. The label pressing groove is designed according to the shape of the upper surface of the egg carton, and in conjunction with the arc-shaped label pressing trajectory of the cam track, the label pressing parts cut into the top of the label with an arc-shaped downward movement trajectory, forming a progressive rolling and bonding method for label pressing, avoiding label friction displacement and label lifting on both sides. When the limiting cam runs to the lowest point of the label pressing trajectory, the label pressing groove applies uniform vertical pressure, resulting in a good label-egg carton bonding effect. The linkage design of the cam track and turntable enables continuous assembly line operation, and the single-machine processing efficiency is many times that of manual labor, effectively solving the problems of label lifting and poor bonding in traditional machine labeling.

[0007] Furthermore, the circumferential angles corresponding to the arc-shaped marking trajectory segment are symmetrical along the vertical direction and are [40°, 100°]. This setting effectively avoids the phenomenon of label displacement and detachment caused by friction from the marking component, ensuring that the marking component and the egg carton press the label together in a relatively static motion in the horizontal direction during the marking process.

[0008] Furthermore, the cam track also includes a first lateral swing trajectory segment on the left, a top swing trajectory segment on the top, and a second lateral swing trajectory segment on the right. The first lateral swing trajectory segment, the top swing trajectory segment, and the second lateral swing trajectory segment are used to limit the marking component to move in an arc in the radial direction perpendicular to the turntable by a limiting cam. The first lateral swing trajectory segment, the top swing trajectory segment, the second lateral swing trajectory segment, and the arc marking trajectory segment are adaptively connected. With this setting, by adding the first lateral swing trajectory segment, the top swing trajectory segment, and the second lateral swing trajectory segment, the marking component can swing in an arc in the radial direction of the turntable during the non-marking stage, realizing a smooth transition and rapid rotational reset of the marking component, avoiding interference between the marking groove and the egg box. The multi-segment trajectory design ensures that the marking component can smoothly exit the working area after pressing and automatically adjust its posture during rotation to prepare for the next marking, ensuring the smoothness and stability of continuous operation.

[0009] Furthermore, the cam track is a track groove with an opening on the front side of the turntable; this configuration simplifies the cam track setup and facilitates manufacturing.

[0010] Furthermore, four label-pressing components are provided along the circumference of the turntable. The turntable has an outwardly extending rotating connection part corresponding to each label-pressing component. The label-pressing component is rotatably connected to the corresponding rotating connection part through a rotating shaft. Adjacent rotating connection parts are connected by an inner arc structure. With this arrangement, the outwardly extending rotating connection parts and the inner arc transition structure enable the label-pressing component to pivot stably while optimizing the structural strength of the turntable and avoiding stress concentration. The inner arc transition design effectively reduces airflow resistance, reduces vibration and noise when the turntable rotates at high speed, and improves operational stability. The connection between adjacent label-pressing components is more compact, ensuring the continuity and synchronization of the label-pressing action, further improving labeling accuracy and mechanism durability.

[0011] Furthermore, the drive mechanism includes a drive disc, a transmission component, and a drive motor. The transmission component is equipped with a tension wheel, and the output end of the drive motor is equipped with a drive wheel. The drive disc has a shaft hole at its center, and the drive disc is connected to the transmission shaft through the shaft hole. The drive wheel is connected to the drive disc through the transmission component. With this configuration, the drive motor drives the drive wheel, which in turn drives the drive disc connected to the transmission shaft via the transmission component, forming a compact and stable power transmission system. This ensures smooth rotation of the turntable and uniform torque output. The modular design of the drive mechanism facilitates maintenance and power adjustment. At the same time, by optimizing the transmission path, energy loss is reduced, and overall operating efficiency is improved. This allows the labeling action to be precisely matched with the production line rhythm, ensuring the continuity and reliability of the labeling process.

[0012] Furthermore, the drive disc is a pulley, and the transmission component is a transmission belt, which is wound around the outer circumference of the pulley and the drive wheel, respectively. With this configuration, a combination of pulley and transmission belt is used for transmission. The flexible connection effectively buffers the impact vibration during motor start-up and shutdown, reduces operating noise, and extends the service life of the equipment. The belt drive has overload slippage characteristics, which can prevent mechanical damage caused by accidental jamming. At the same time, it is easy to adjust the transmission ratio to adapt to different labeling speed requirements. Maintenance and replacement are simple and inexpensive, which significantly improves the reliability and economy of the equipment.

[0013] Furthermore, the drive disc is a gear disc, and the transmission component is a transmission chain, which meshes with the outer circumference of both the gear disc and the drive wheel. This configuration provides a more stable and reliable power transmission through the meshing of the gear disc and the transmission chain, ensuring that the labeling mechanism maintains precise synchronization even under high loads or long-term continuous operation. The chain drive offers higher transmission efficiency and tensile strength, effectively preventing labeling position deviations caused by belt slippage, while also enhancing system rigidity. It is suitable for high-speed, heavy-load conditions, significantly improving the stability of equipment operation and labeling accuracy.

[0014] Furthermore, it also includes a support frame connected to the rear of the fixed frame, with the fixed frame and the support frame connected by several connecting frames. A drive chamber is formed between the support frame and the fixed frame, and the drive disc is placed in the drive chamber. By setting up a support frame behind the fixed frame to form a closed drive chamber, the drive disc and its transmission structure are internally protected, effectively isolating external foreign object interference and improving the stability and service life of the transmission system. At the same time, it optimizes the overall structural layout of the equipment, isolating the power components from the working area, ensuring operational safety and facilitating centralized maintenance, and ensuring long-term reliable operation of the marking mechanism in complex production environments.

[0015] A labeling machine includes a conveying platform and a feeding mechanism, an adhesive labeling mechanism, a label pressing mechanism, and a stacking mechanism arranged along the conveying direction of the conveying platform. The feeding mechanism is used to place stacked egg cartons without labels one by one onto the conveying platform. The adhesive labeling mechanism is used to apply adhesive to the labels and stick them to the top of the egg cartons. The label pressing mechanism is used to press the labels extending to both sides of the egg cartons onto the two sides of the egg cartons. The stacking mechanism is used to stack the labeled egg cartons.

[0016] Compared with existing technologies, the labeling machine of this utility model features a label pressing mechanism that drives the turntable and circumferentially distributed label pressing parts to rotate continuously, achieving automated label pressing of egg carton labels and significantly improving production efficiency. The label pressing groove is designed according to the shape of the upper surface of the egg carton, and in conjunction with the arc-shaped label pressing trajectory of the cam track, the label pressing parts cut into the top of the label in an arc-shaped downward motion trajectory, forming a progressive rolling pressing method for label pressing, avoiding label friction displacement and label lifting on both sides. When the limiting cam runs to the lowest point of the label pressing trajectory, the label pressing groove applies uniform vertical pressure, resulting in a good label-egg carton adhesion effect. The linkage design of the cam track and turntable enables continuous assembly line operation, with a single machine processing efficiency many times that of manual labor, effectively solving problems such as label lifting and poor adhesion in traditional machine labeling. Attached Figure Description

[0017] Figure 1 A diagram illustrating the action of the label-pressing mechanism pressing the egg carton label. Figure 1 .

[0018] Figure 2 A diagram illustrating the action of the label-pressing mechanism pressing the egg carton label. Figure 2 .

[0019] Figure 3 A diagram illustrating the action of the label-pressing mechanism pressing the egg carton label. Figure 3 .

[0020] Figure 4 This is a schematic diagram of the marking mechanism.

[0021] Figure 5This is a schematic diagram of a labeling machine.

[0022] Reference numerals: 1. Fixed frame; 2. Labeling assembly; 3. Drive mechanism; 11. Cam track; 31. Drive shaft; 12. Arc labeling trajectory segment; 111. Turntable; 21. Labeling component; 22. Labeling groove; 221. Adapter frame; 23. Limiting cam; 24. Rotating shaft; 25. First lateral swing trajectory segment; 112. Top swing trajectory segment; 113. Second lateral swing trajectory; 114. Rotary connection part; 211. Inner arc structure; 212. Drive disk; 32. Transmission component; 33. Drive wheel; 341. Tensioning wheel; 35. Shaft hole; 36. Support frame; 4. Connecting frame; 41. Labeling machine; 6. Conveying platform; 61. Feeding mechanism; 62. Glue brushing and labeling mechanism; 63. Stacking mechanism; 64. Labeling mechanism; 65. Egg box; 66. Bearing seat; 38. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model.

[0024] Example 1:

[0025] See Figures 1 to 4 The label pressing mechanism 65 of this utility model includes a fixed frame 1, a label pressing assembly 2, and a drive mechanism 3. The fixed frame 1 is provided with a circumferentially closed cam track 11 located on the front side and a transmission shaft 31 located inside the cam track 11. A drive chamber 12 is provided on the rear side of the fixed frame 1. The cam track 11 includes a label pressing trajectory segment 111 located at the bottom. The label pressing assembly 2 includes a turntable 21 and a plurality of label pressing parts 22 evenly distributed on the outer periphery of the turntable 21. The label pressing parts 22 are provided with label pressing grooves 221 with openings at the bottom and on both sides, and a connecting frame 23 located at the top. The shape of the label pressing grooves 221 is adapted to the shape of the upper surface of the egg carton 66. One side of the connecting frame 23 is open to the top. The rotating shaft 25 is rotatably connected to the outer end of the turntable 21. The other side of the adapter frame 23 is provided with a limiting cam 24 that is placed in the cam track 11. The arc-shaped marking trajectory segment 111 is used to limit the marking groove 221 of the marking component 22 to move in a bottom arc in the horizontal direction through the limiting cam 24. When the limiting cam 24 is located at the lowest point in the arc-shaped marking trajectory segment 111, the marking component 22 presses the label on the workpiece through the marking groove 221. The drive mechanism 3 is located in the drive chamber 12 and is connected to the drive shaft 31 extending to the drive chamber 12. It is used to drive the turntable 21 to rotate relative to each other. The two ends of the drive shaft 31 are respectively fixed by bearing seats 38.

[0026] Compared with the prior art, the label pressing mechanism 65 of this utility model drives the turntable 21 and the circumferentially distributed label pressing parts 22 to rotate continuously, realizing the automated pressing of the label on the egg carton 66, which greatly improves the production efficiency. The label pressing groove 221 is designed according to the shape of the upper surface of the egg carton 66. It is coordinated with the arc-shaped label pressing trajectory segment 111 of the cam track 11 so that the label pressing part 22 cuts into the top of the label with an arc downward movement trajectory, forming a progressive rolling and bonding method to press the label, avoiding label friction displacement and label lifting on both sides. When the limiting cam 24 runs to the lowest point of the label pressing trajectory segment 111, the label pressing groove 221 applies uniform vertical pressure, and the label and egg carton 66 have a good bonding effect. The linkage design of the cam track 11 and the turntable 21 realizes continuous assembly line operation, and the single machine processing efficiency is many times that of manual labor, effectively solving the problems of label lifting and poor bonding in traditional machine labeling.

[0027] See Figures 1 to 4 In one embodiment, the circumferential angle corresponding to the arc-shaped labeling trajectory segment 111 is symmetrical along the vertical direction and is [40°, 100°]. By setting it in this way, the phenomenon of label displacement and falling off caused by the friction of the labeling component 22 is effectively avoided, and it is ensured that during the labeling process, the labeling component 22 and the egg box 66 are pressed together in a relatively static motion in the horizontal direction.

[0028] See Figures 1 to 4 In one embodiment, the cam track 11 further includes a first lateral swing track segment 112 located on the left, a top swing track segment 113 located at the top, and a second lateral swing track segment 114 located on the right; the first lateral swing track segment 112, the top swing track segment 113, and the second lateral swing track segment 114 are used to limit the marking member 22 to make arc movements in the radial direction perpendicular to the turntable 21 by the limiting cam 24; the first lateral swing track segment 112, the top swing track segment 113, the second lateral swing track segment 114, and the arc marking track segment 111 are adapted to each other. A smooth transition connection is achieved by adding a first lateral swing trajectory segment 112, a top swing trajectory segment 113, and a second lateral swing trajectory segment 114. This allows the pressure plate 22 to swing in an arc along the radial direction of the turntable 21 during the non-pressure phase, enabling a smooth transition and rapid rotational reset of the pressure plate 22 and preventing interference between the pressure plate groove 221 and the egg box 66. The multi-segment trajectory design ensures that the pressure plate 22 can smoothly exit the working area after pressing and automatically adjust its posture during rotation to prepare for the next pressure, ensuring the smoothness and stability of continuous operation.

[0029] See Figures 1 to 4 In one embodiment, the cam track 11 is a track groove with an opening on the front side of the turntable 21; with this configuration, the cam track 11 is simple to set and convenient for processing and production.

[0030] See Figures 1 to 4 In one embodiment, four label pressing components 22 are provided circumferentially along the turntable 21. The turntable 21 has an outwardly extending rotating connection portion 211 corresponding to each label pressing component 22. The label pressing component 22 is rotatably connected to the corresponding rotating connection portion 211 through a rotating shaft 25. Adjacent rotating connection portions 211 are transitionally connected through an inner arc structure 212. With this arrangement, by setting the outwardly extending rotating connection portion 211 and the inner arc structure 212, the label pressing component 22 can pivot stably while optimizing the structural strength of the turntable 21 and avoiding stress concentration. The inner arc structure 212 design effectively reduces airflow resistance, reduces vibration and noise when the turntable 21 rotates at high speed, and improves operational stability. The connection between adjacent label pressing components 22 is more compact, ensuring the continuity and synchronization of the label pressing action, further improving labeling accuracy and mechanism durability.

[0031] See Figures 1 to 4 In one embodiment, the drive mechanism 3 includes a drive disk 32, a transmission component 33, and a drive motor. The transmission component 33 is equipped with a tension wheel 35, and the output end of the drive motor is provided with a drive wheel 341. The drive disk 32 has a shaft hole 36 at its center, and the drive disk 32 is connected to the transmission shaft 31 through the shaft hole 36. The drive wheel 341 is connected to the drive disk 32 through the transmission component 33. With this configuration, the drive motor drives the drive wheel 341, which in turn drives the drive disk 32 connected to the transmission shaft 31 via the transmission component 33, forming a compact and stable power transmission system. This ensures that the turntable 21 rotates smoothly and the torque output is uniform. The modular design of the drive mechanism 3 facilitates maintenance and power adjustment. At the same time, by optimizing the transmission path, energy loss is reduced, and the overall operating efficiency is improved. This allows the labeling action to be precisely matched with the production line rhythm, ensuring the continuity and reliability of the labeling process.

[0032] See Figures 1 to 4 In one embodiment, the drive disc 32 is a pulley, and the transmission component 33 is a transmission belt. The transmission belt is wound around the outer periphery of the pulley and the drive wheel 341, and the transmission belt is equipped with a tension pulley 35. With this arrangement, the combination of the pulley and the transmission belt is used for transmission. The flexible connection effectively buffers the impact vibration during motor start-up and shutdown, reduces operating noise, and extends the service life of the equipment. The belt drive has overload slippage characteristics, which can prevent mechanical damage caused by accidental jamming. At the same time, it is easy to adjust the transmission ratio to adapt to different labeling speed requirements. Maintenance and replacement are simple and inexpensive, which significantly improves the reliability and economy of the equipment.

[0033] See Figures 1 to 4In one embodiment, the drive disc 32 is a gear disc, and the transmission component 33 is a transmission chain. The transmission chain meshes with the outer periphery of the gear disc and the drive wheel 341, respectively, and the transmission chain is equipped with a tension wheel 35. With this configuration, the meshing transmission between the gear disc and the transmission chain provides a more stable and reliable power transmission, ensuring that the labeling mechanism 65 maintains precise synchronization even under high load or long-term continuous operation. The chain drive has higher transmission efficiency and tensile strength, effectively avoiding labeling position deviation caused by belt slippage, while enhancing system rigidity. It is suitable for high-speed and heavy-load conditions, significantly improving the stability of equipment operation and labeling accuracy.

[0034] See Figures 1 to 4 In one embodiment, a support frame 4 is further provided behind the fixed frame 1. The fixed frame 1 and the support frame 4 are connected by a plurality of connecting frames 41. A drive chamber 12 is formed between the support frame 4 and the fixed frame 1, and the drive disc 32 is placed in the drive chamber 12. With this arrangement, by setting the support frame 4 behind the fixed frame 1 and forming a closed drive chamber 12, the drive disc 32 and its transmission structure are internally protected, effectively isolating external foreign object interference and improving the stability and service life of the transmission system. At the same time, the overall structural layout of the equipment is optimized, isolating the power components from the working area, ensuring operational safety and facilitating centralized maintenance, and ensuring that the marking mechanism 65 operates reliably for a long time in complex production environments.

[0035] Example 2:

[0036] See Figures 1 to 5 The main purpose of this embodiment is to provide a labeling machine 6 that applies the label pressing mechanism 65 of the first embodiment, including a conveying platform 61 and a feeding mechanism 62, an adhesive labeling mechanism 63, the label pressing mechanism 65, and a stacking mechanism 64 arranged along the conveying direction of the conveying platform 61; the feeding mechanism 62 is used to place stacked unlabeled egg cartons 66 one by one on the conveying platform 61, the adhesive labeling mechanism 63 is used to apply adhesive to the labels and stick them to the top of the egg cartons 66, the label pressing mechanism 65 is used to press the labels extending from both sides of the egg cartons 66 onto both sides of the egg cartons 66, and the stacking mechanism 64 is used to stack the labeled egg cartons 66.

[0037] Compared with the prior art, the labeling machine 6 of this utility model has a driving mechanism 3 that drives the turntable 21 and the circumferentially distributed labeling parts 22 to rotate continuously, realizing the automated pressing of the labels on the egg carton 66 and greatly improving production efficiency. The labeling groove 221 is designed according to the shape of the upper surface of the egg carton 66, and works with the arc-shaped labeling trajectory segment 111 of the cam track 11 so that the labeling parts 22 cut into the top of the label with an arc-shaped downward movement trajectory, forming a progressive rolling pressing and bonding method to press the label, avoiding label friction displacement and label lifting on both sides. When the limiting cam 24 runs to the lowest point of the labeling trajectory segment 111, the labeling groove 221 applies uniform vertical pressure, and the label and egg carton 66 have a good bonding effect. The linkage design of the cam track 11 and the turntable 21 realizes continuous assembly line operation, and the single machine processing efficiency is many times that of manual labor, effectively solving the problems of label lifting and poor bonding in traditional machine labeling.

[0038] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A stamping mechanism, characterized by, include: The fixed frame is provided with a circumferentially closed cam track on the front side and a drive shaft on the inner side of the cam track. The fixed frame is provided with a drive chamber on the rear side. The cam track includes a pressure mark track section at the bottom. The label pressing assembly includes a turntable and several label pressing parts evenly distributed around the outer periphery of the turntable. Each label pressing part has a label pressing groove with openings at the bottom and both sides, and a transfer frame located at the top. The shape of the label pressing groove is adapted to the shape of the upper surface of the egg carton. One side of the transfer frame is rotatably connected to the outer end of the turntable via a rotating shaft, and the other side of the transfer frame has a limiting cam that is inserted into a cam track. The circular arc label pressing trajectory segment is used to limit the label pressing groove of the label pressing part to move in a bottom arc in the horizontal direction through the limiting cam. When the limiting cam is located at the lowest point in the circular arc label pressing trajectory segment, the label pressing part presses the label on the workpiece through the label pressing groove. The drive mechanism, located in the drive chamber and connected to the drive shaft extending into the drive chamber, is used to drive the turntable to rotate relative to each other. Both ends of the drive shaft are fixed by bearing seats.

2. The stamping mechanism of claim 1, wherein, The circumferential angle corresponding to the arc marking trajectory segment is symmetrical along the vertical direction and is [40°, 100°].

3. The price marking mechanism of claim 1, wherein, The cam track also includes a first lateral swing track segment on the left, a top swing track segment on the top, and a second lateral swing track segment on the right; The first lateral swing trajectory segment, the top swing trajectory segment, and the second lateral swing trajectory segment are used to limit the pressure mark component to move in an arc in the radial direction perpendicular to the turntable by means of the limiting cam. An adaptive transition connection is provided between the first lateral swing trajectory segment, the top swing trajectory segment, the second lateral swing trajectory segment, and the circular arc pressure mark trajectory segment.

4. The price marking mechanism of claim 1, wherein, The cam track is a track groove with an opening located on the front side of the turntable.

5. The price marking mechanism of claim 1, wherein, The label pressing component is provided in four parts along the circumference of the turntable. The turntable has an outwardly extending rotating connection part for each label pressing component. The label pressing component is rotatably connected to the corresponding rotating connection part through a rotating shaft. Adjacent rotating connection parts are connected by an inner arc structure.

6. The price marking mechanism of claim 1, wherein, The driving mechanism includes a driving disk, a transmission component, and a driving motor. The transmission component is equipped with a tension wheel, and the output end of the driving motor is provided with a driving wheel. The driving disk has a shaft hole at its center, and the driving disk is connected to the transmission shaft through the shaft hole. The driving wheel is connected to the driving disk through the transmission component.

7. The stamping mechanism of claim 6, wherein, The drive disc is a pulley, and the transmission component is a transmission belt, which is wound around the outer circumference of the pulley and the drive wheel respectively.

8. The stamping mechanism of claim 6, wherein, The drive disk is a gear disk, and the transmission component is a transmission chain, which meshes with the outer periphery of the gear disk and the drive wheel respectively.

9. The price marking mechanism of claim 6, wherein, It also includes a support frame connected to the rear of the fixed frame, and the fixed frame and the support frame are connected by several connecting frames. The drive chamber is formed between the support frame and the fixed frame, and the drive disk is placed in the drive chamber.

10. A labelling machine characterised in that, It includes a conveying platform and a feeding mechanism, a labeling mechanism, a label pressing mechanism as described in any one of claims 1 to 8, and a stacking mechanism arranged along the conveying direction of the conveying platform; The feeding mechanism is used to place stacked unlabeled egg cartons one by one onto the conveying platform; the glue-applying and labeling mechanism is used to apply glue to the labels and stick them to the top of the egg cartons; the label-pressing mechanism is used to press the labels extending to both sides of the egg cartons onto both sides of the egg cartons; and the stacking mechanism is used to stack the labeled egg cartons.

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