A labelling apparatus

Abstract

This application relates to the technical field of packaging equipment. Addressing the issue of easily damaged anti-counterfeiting labels on bottle caps during the compaction process, a labeling device is proposed, comprising a conveying mechanism, a feeding mechanism, a positioning mechanism, a labeling mechanism, a label pressing mechanism, and a discharging mechanism. The conveying mechanism includes a conveyor turntable and a conveying drive component, the latter driving the turntable to rotate. Clamping components and adjustment drive components are evenly arranged on the outer circumference of the turntable. The feeding mechanism conveys bottle caps to be labeled to the clamping components. The positioning mechanism checks and adjusts the labeling area of ​​the bottle cap to a set labeling position. The labeling mechanism affixes the anti-counterfeiting label to the labeling area of ​​the bottle cap. The label pressing mechanism includes a pressing base and a follow-up drive component, the pressing base supporting a flexible pressing block and the pressing drive component. The discharging mechanism receives and conveys the bottle caps after labeling. This application effectively reduces the likelihood of damage to anti-counterfeiting labels during the compaction process.

Description

Technical Field

[0001] This application relates to the technical field of packaging equipment, and in particular to a labeling device. Background Technology

[0002] Reference Figure 1 In the production process of high-end liquor packaging, the bottle cap surface usually has a labeling area with a unique anti-counterfeiting label to serve as a security feature. These anti-counterfeiting labels are often made of fragile materials with poor shear resistance, such as fragile paper or laser holographic film, so that they automatically destroy themselves after the bottle cap is opened, ensuring their reliable anti-counterfeiting function.

[0003] Currently, the labeling process for anti-counterfeiting labels is usually completed using automated labeling equipment. Specifically, the labeling equipment transports the bottle caps to be labeled to the labeling station, where the labeling mechanism initially applies the label to the surface of the bottle cap. The caps are then further transported to the pressing station, where the pressing mechanism performs a secondary pressing process on the label to ensure the adhesion stability of the label.

[0004] In related technologies, the label pressing mechanism is usually a fixed label pressing brush. When pressing the label, the labeling equipment drives the bottle cap and the label pressing brush to move relative to each other, thereby causing relative sliding friction between the attached label and the stationary label pressing brush, thus pressing the label onto the bottle cap surface by means of friction.

[0005] Regarding the aforementioned technologies, since the label-pressing brush is stationary while the bottle cap is in motion, continuous sliding friction exists between the anti-counterfeiting label and the brush, easily generating continuous tangential shear force on the label surface. For fragile anti-counterfeiting labels, this tangential shear force can easily cause displacement, wrinkling, or even surface damage, severely affecting the product's appearance qualification rate and the integrity of its anti-counterfeiting function. Simultaneously, angular deviations caused by the bottle cap during transport are difficult to compensate for effectively, leading to label misalignment and affecting labeling accuracy and product consistency. Furthermore, fragile anti-counterfeiting labels, lacking effective support during peeling, are prone to drifting or deformation due to airflow, further reducing labeling quality. Therefore, there is room for improvement. Summary of the Invention

[0006] In order to facilitate a more secure adhesion of anti-counterfeiting labels to the bottle cap labeling area while reducing damage to the labels during the application process, this application provides a labeling device.

[0007] This application provides a labeling device, which adopts the following technical solution: A labeling device includes a conveying mechanism, a feeding mechanism, a positioning mechanism, a labeling mechanism, a label pressing mechanism, and a discharging mechanism; The conveying mechanism includes a conveying turntable and a conveying drive component. The conveying drive component is used to drive the conveying turntable to rotate. The outer periphery of the conveying turntable is evenly distributed with a plurality of clamping components for clamping bottle caps and an adjustment drive component for driving the clamping components to rotate. The feeding mechanism, the positioning mechanism, the labeling mechanism, the label pressing mechanism, and the unloading mechanism are distributed along the conveying path of the clamping assembly; The feeding mechanism is used to transport bottle caps to be labeled to the clamping assembly; The positioning mechanism is used in conjunction with the adjustment drive to drive the corresponding clamping assembly to rotate, so as to check and adjust the labeling position of the bottle cap to the set labeling position; The labeling mechanism is used to affix anti-counterfeiting labels to the labeling area on the bottle cap; The label pressing mechanism includes a label pressing base and a follower drive component. The follower drive component is used to drive the label pressing base to move around the circumference of the conveying turntable. The label pressing base is supported by a flexible pressing block and a label pressing drive component. The label pressing drive component is used to drive the flexible pressing block to move relative to the clamping assembly of the conveying turntable. When the conveyor turntable drives the clamping assembly and the bottle cap after labeling to the label pressing mechanism, the follow-up drive drives the label pressing base to move the flexible pressing block at the same speed as the target clamping assembly to maintain relative stillness. The label pressing drive drives the flexible pressing block to move towards the bottle cap close to the clamping assembly to press the anti-counterfeiting label on the bottle cap. The feeding mechanism is used to receive and transport bottle caps that have been stamped with labels.

[0008] By adopting the above technical solution, during labeling, the feeding mechanism transports the bottle caps to be labeled to the clamping assembly of the conveyor turntable. The conveyor turntable drives the bottle caps to pass sequentially through the positioning mechanism, the labeling mechanism, and the pressing mechanism. During this process, the positioning mechanism, in conjunction with the adjusting drive, rotates the clamping assembly to adjust the labeling area of ​​the bottle cap to the set position. Then, the labeling mechanism affixes the anti-counterfeiting label to the labeling area of ​​the bottle cap. Subsequently, the conveyor turntable transports the labeled bottle caps to the pressing mechanism. The follow-up drive drives the pressing base to move the flexible pressing block at the same speed as the target clamping assembly on the conveyor turntable, keeping the flexible pressing block relatively stationary with the bottle cap. Then, the pressing drive drives the flexible pressing block to press vertically against the labeling area of ​​the bottle cap to compact the anti-counterfeiting label. Compared with the traditional method of compacting the label by the sliding friction between the brush and the bottle cap, this method effectively avoids the tangential shearing force caused by continuous sliding friction on the easily damaged anti-counterfeiting label, ensuring a firm adhesion of the anti-counterfeiting label while reducing the risk of displacement, wrinkling, or breakage of the anti-counterfeiting label.

[0009] Preferably, it also includes a control system; The positioning mechanism includes a first positioning camera and a second positioning camera arranged sequentially along the conveying path of the clamping assembly; the adjustment drive, the first positioning camera, and the second positioning camera are all electrically connected to the control system. When the clamping assembly passes the first positioning camera, the control system controls the adjustment drive to drive the clamping assembly to rotate the bottle cap. The first positioning camera acquires an image of the bottle cap rotating and feeds it back to the control system. Based on the feedback image, the control system controls the adjustment drive to perform a first angle correction on the labeling area of ​​the bottle cap, so as to initially adjust the labeling area of ​​the bottle cap to the set position. When the clamping assembly passes the second positioning camera, the second positioning camera acquires an image of the bottle cap and feeds it back to the control system. Based on the feedback image, the control system controls the adjustment drive to perform a second angle correction on the labeling area of ​​the bottle cap, so as to accurately adjust the labeling area of ​​the bottle cap to the set position.

[0010] By adopting the above technical solution, the first positioning camera and the second positioning camera are used to perform coarse positioning and fine positioning of the bottle cap, respectively. This helps to improve the accuracy and reliability of the position adjustment of the bottle cap labeling area, ensuring that the bottle cap labeling area moves accurately to the set position, which in turn helps the subsequent labeling mechanism to better paste the label onto the bottle cap labeling area.

[0011] Preferably, the labeling mechanism includes a labeling base, which is provided with a feeding roller, a labeling plate, a waste roller, and a winding drive component; The feeding roller is used to feed the label roll into the label roll; The labeling plate is positioned close to the conveyor turntable, and the end of the labeling plate closest to the conveyor turntable is the peeling end; the peeling end is used for wrapping the label roll. The waste roller is used to fix the backing paper of the label roll, and the winding drive is used to drive the waste roller to rotate in order to wind up the backing paper of the label roll.

[0012] By adopting the above technical solution, during labeling, the label roll is drawn out from the feeding roller, wrapped around the peeling end of the labeling plate and fixed to the waste roller. When the winding drive drives the waste roller to wind up the bottom paper, the anti-counterfeiting label is separated from the bottom paper by the peeling end of the labeling plate and pasted to the labeling position of the bottle cap that has moved into place at this time, realizing automatic peeling and transfer pasting of the label, which helps to improve the pasting efficiency of anti-counterfeiting labels.

[0013] Preferably, the labeling plate includes an input side and an output side, with the output side disposed away from the conveyor turntable; The labeling base is also provided with a support brush, which is located on the output side of the labeling plate and is positioned closer to the conveyor turntable than the peeling end of the labeling plate. The support brush is used to temporarily support the anti-counterfeiting label that has detached from the label roll backing paper, so as to limit the anti-counterfeiting label from drifting outward away from the peeling end of the labeling plate.

[0014] By adopting the above technical solution, the support brush is used to temporarily support the anti-counterfeiting label that has been detached from the backing paper. This helps to limit the anti-counterfeiting label from drifting outward, drooping or curling due to its own weight or airflow. It ensures that the anti-counterfeiting label is stably held in a position that is easy for the bottle cap to stick, which helps to improve the reliability of the labeling action and avoids labeling failure or skewness due to the position of the anti-counterfeiting label.

[0015] Preferably, when the conveyor turntable drives the clamping assembly to adhere the anti-counterfeiting label to the labeling plate, the adjusting drive causes the clamping assembly and the bottle cap to swing relative to the labeling plate to assist in attaching the anti-counterfeiting label to the labeling area of ​​the bottle cap.

[0016] By adopting the above technical solution, when the labeling area of ​​the bottle cap comes into contact with the anti-counterfeiting label, the driving component is adjusted to drive the clamping assembly to swing the bottle cap relative to the labeling plate, so that the label is rolled onto the curved labeling area of ​​the bottle cap. This helps to expel the air between the label and the bottle cap, reduce the generation of air bubbles, and thus improve the flatness and firmness of the anti-counterfeiting label during application.

[0017] Preferably, the conveyor turntable is provided with a loading station and a unloading station respectively corresponding to the loading mechanism and the unloading mechanism; The feeding mechanism includes a feeding conveyor belt and a feeding assembly. The feeding conveyor belt, in conjunction with the feeding assembly, is used to move the bottle caps to be labeled to the clamping assembly located at the feeding station. The feeding mechanism includes a feeding conveyor belt and a feeding assembly. The feeding conveyor belt, in conjunction with the feeding assembly, is used to receive and transfer bottle caps that have been stamped with labels.

[0018] By adopting the above technical solution, during the feeding process, the feeding component grabs the bottle caps to be labeled on the feeding conveyor belt and loads them into the empty clamping component located at the feeding station; during the unloading process, the unloading component transfers the bottle caps that have been labeled and pressed and moved to the unloading station from the clamping component to the unloading conveyor belt for conveying, thereby realizing the automatic clamping and transfer of bottle caps and improving the efficiency of bottle cap loading and unloading.

[0019] Preferably, the clamping assembly includes a support portion and a clamping portion; the support portion and the clamping portion are respectively located at the bottom and top of the conveyor turntable; The support portion is used for the bottom end of the bottle cap to abut against; The clamping part includes a clamping support, a clamping rod, a pressure head rod, and a clamping spring. The clamping support is connected to the conveying turntable. The clamping rod passes through the clamping support and has a connecting boss protruding from its outer periphery. The pressure head rod is rotatably connected to the bottom end of the clamping rod. The clamping spring is sleeved on the clamping rod, and its two ends are respectively connected to the clamping support and the connecting boss. The clamping spring is used to drive the clamping rod to move the pressure head rod to cooperate with the support part to clamp the bottle cap. All clamping rods are equipped with linkage components; a linkage part is supported on the outer side of the conveying turntable, and the linkage part is located above both the loading station and the unloading station of the conveying turntable; When the conveyor turntable moves the clamping assembly to the loading station and the unloading station, the linkage component and the linkage part work together to make the clamping rod move the clamping head rod away from the corresponding support part.

[0020] By adopting the above technical solution, when the clamping assembly moves to the loading station and unloading station, the linkage part and the linkage component cooperate to drive the clamping rod to move the pressure head rod away from the corresponding support part, so that the loading assembly and the unloading assembly can transfer the bottle cap to the clamping assembly or remove it from the clamping assembly respectively; when the clamping assembly moves outside the range of the loading station and the unloading station, the clamping part drives the clamping rod to move the pressure head rod downward through the clamping spring, so as to cooperate with the support part to clamp and fix the bottle cap.

[0021] Preferably, the support portion includes a support base, the support base is provided with a support column, and a support ring and a lifting spring are sleeved on the outer periphery of the support column. The two ends of the lifting spring are respectively connected to the support ring and the support base. The support column is used for the bottle cap to be sleeved on; the support ring is used for the end of the bottle cap to abut against; the lifting spring is used to drive the support ring to move upward so as to push the bottle cap away from the support column; the elastic force of the lifting spring is set to be less than the elastic force of the clamping spring; the adjusting drive is used to drive the support base to rotate.

[0022] By adopting the above technical solution, when the bottle cap is clamped by the clamping part and the support part, the bottle cap can be sleeved on the support column by pressing down the pressure head rod, and at the same time, the bottle cap abuts against the support ring, which facilitates the subsequent adjustment of the driving component to drive the bottle cap to rotate more stably; when the pressure head rod is driven to move upward by the linkage part and the linkage component, the lifting spring can be used in conjunction with the support ring to push the bottle cap away from the support column, which facilitates the loading and unloading components to disassemble and install the bottle cap located at the support part; by making the elastic force of the lifting spring less than that of the clamping spring, it is beneficial to ensure that the lower pressure head rod can stably drive the bottle cap into the support column in the clamping state.

[0023] Preferably, the inner circumference of the support ring is provided with a limiting protrusion, the inner circumference of the support column is provided with a limiting groove, and the limiting protrusion is embedded in the limiting groove.

[0024] By adopting the above technical solution, the limiting protrusion on the inner circumference of the support ring and the limiting groove on the inner circumference of the support column are interlocked, which helps to limit the circumferential rotation of the support ring relative to the support column and ensures that when the subsequent adjustment drive component drives the support seat to rotate, the support ring can stably drive the bottle cap to rotate.

[0025] Preferably, it also includes a rejection assembly; the rejection assembly includes a rejection camera and a rejection air gun; the rejection camera is located between the marking mechanism and the unloading mechanism, and the rejection air gun is located on one side of the unloading conveyor belt; Both the rejecting camera and the rejecting air gun are electrically connected to the control system. The rejecting camera is used to acquire images of bottle caps after labeling is completed and send them to the control system. The control system determines whether the anti-counterfeiting label is properly affixed based on the image fed back by the rejecting camera, and controls the rejecting air gun to blow away bottle caps with unqualified anti-counterfeiting labels from the unloading conveyor belt.

[0026] By adopting the above technical solution, when the bottle cap passes through the rejection camera, the rejection camera takes a labeling image and feeds it back to the control system. The control system performs image analysis and automatically judges whether the label's pasting position, flatness, etc. are qualified. The rejection air gun automatically removes the unqualified bottle caps, which helps to ensure the labeling quality of the anti-counterfeiting labels on the bottle caps.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. By using a follow-up drive component to drive the label base to move the flexible pressure block and the clamping assembly synchronously, and then using the label drive component to drive the flexible pressure block to vertically press the bottle cap, the relative friction between the anti-counterfeiting label and the label during the compaction process is effectively eliminated. This ensures that the anti-counterfeiting label is firmly bonded while reducing the possibility of displacement, wrinkling or surface damage of the anti-counterfeiting label.

[0028] 2. By coordinating the first and second positioning cameras and adjusting the drive components and control system, the position of the bottle cap labeling area is adjusted, achieving both coarse and fine positioning of the bottle cap labeling position. This effectively compensates for deviations at the bottle cap labeling area and cumulative errors during the conveying process, which helps the labeling mechanism accurately affix the anti-counterfeiting label to the bottle cap labeling area.

[0029] 3. By setting a support brush on the output side of the labeling board, the support brush provides temporary support for the anti-counterfeiting label that has detached from the backing paper. This helps to limit the displacement and bending of the label after it detaches from the backing paper, and helps the anti-counterfeiting label adhere more smoothly and firmly to the labeling area.

[0030] 4. Using the first positioning camera and the second positioning camera to perform coarse and fine positioning of the bottle cap respectively helps to improve the accuracy and reliability of the position adjustment of the bottle cap labeling area.

[0031] 5. By setting up the rejection component, the rejection camera and rejection air gun can be used to remove unqualified bottle caps in a timely manner, which helps to ensure the overall labeling quality of bottle caps. Attached Figure Description

[0032] Figure 1 This is a schematic diagram used in this application to illustrate the positions of the bottle cap and the anti-counterfeiting label.

[0033] Figure 2 This is a schematic diagram illustrating the structure of the labeling equipment used in this application.

[0034] Figure 3 This is a top view illustrating the labeling equipment used in this application.

[0035] Figure 4 This is a schematic diagram illustrating the structure of the conveying mechanism used in this application.

[0036] Figure 5 This is a schematic diagram illustrating the structure of the clamping assembly used in this application.

[0037] Figure 6 yes Figure 3 Enlarged schematic diagram of part A in the middle.

[0038] Figure 7 This is a structural schematic diagram used in this application to illustrate the linkage mechanism.

[0039] Figure 8 This is a structural schematic diagram used in this application to illustrate the conveying mechanism, labeling mechanism, and label pressing mechanism.

[0040] Figure 9 yes Figure 8 Enlarged schematic diagram of section B.

[0041] Figure 10 yes Figure 8 Enlarged diagram of section C.

[0042] Explanation of reference numerals in the attached figures: 1. Conveying mechanism; 11. Conveying turntable; 10. Conveying drive component; 12. Support part; 121. Support seat; 122. Support column; 123. Support ring; 124. Lifting spring; 13. Clamping part; 131. Clamping support; 132. Clamping rod; 1321. Connecting boss; 133. Pressing head rod; 134. Clamping spring; 14. Adjusting drive component; 2. Feeding mechanism; 21. Feeding conveyor belt; 22. Feeding assembly; 221. Feeding star wheel; 222. Feeding arc baffle; 3. Positioning mechanism; 31. First positioning camera; 32. Second positioning camera ; 4. Labeling mechanism; 41. Labeling base; 42. Feeding roller; 43. Labeling plate; 44. Waste roller; 45. Support brush; 5. Label pressing mechanism; 51. Label pressing base; 511. Drive rack; 52. Follow-up drive component; 521. Follow-up base; 522. Follow-up servo motor; 523. Drive gear; 53. Flexible pressing block; 54. Label pressing drive component; 6. Unloading mechanism; 61. Unloading conveyor belt; 62. Unloading assembly; 7. Rejection mechanism; 71. Rejection camera; 72. Rejection air gun; 8. Linkage roller; 9. Linkage cam component; 91. Guide rail. Detailed Implementation The following is in conjunction with the appendix Figure 2-10 This application will be described in further detail.

[0043] This application discloses a labeling device, referring to... Figure 2 and Figure 3 It includes a workbench, on which are installed a conveying mechanism 1, a feeding mechanism 2, a positioning mechanism 3, a labeling mechanism 4, a pressing mechanism 5, a discharging mechanism 6, a rejecting mechanism 7, and a control system.

[0044] Reference Figure 3 and Figure 4 The conveying mechanism 1 includes a conveying turntable 11 and a conveying drive component 10. The conveying turntable 11 is rotatably mounted on the worktable via bearings. The conveying drive component 10 includes a conveying servo motor mounted on the bottom of the worktable. The conveying servo motor is connected to the conveying turntable 11 via a reducer and is used to drive the conveying turntable 11 to rotate around its own axis. A plurality of clamping assemblies for clamping bottle caps are evenly distributed on the outer periphery of the conveying turntable 11. The conveying turntable 11 is also provided with an adjustment drive component 14 for driving the clamping assemblies to rotate.

[0045] Reference Figure 4 and Figure 5 Specifically, the clamping assembly includes a support part 12 and a clamping part 13; the bottom end of the conveying turntable 11 is provided with a lower annular boss corresponding to several support parts 12, and the top end of the conveying turntable 11 is provided with an upper annular boss corresponding to the clamping part 13.

[0046] Reference Figure 4 and Figure 5The support part 12 is used for the bottom end of the bottle cap to abut. Specifically, the support part 12 includes a support base 121, which is rotatably mounted on the lower annular boss via a bearing. A support column 122 is coaxially arranged on the support base 121. A support ring 123 and a lifting spring 124 are also sleeved on the outer periphery of the support column 122. The support ring 123 is used for the end of the bottle cap to abut. The two ends of the lifting spring 124 are respectively connected to the support ring 123 and the support base 121. The support column 122 is used for the bottle cap to fit on. The lifting spring 124 is used to drive the support ring 123 to move upward so as to push the bottle cap fitted on the support column 122 away from the support column 122.

[0047] Reference Figure 4 and Figure 5 The clamping part 13 includes a clamping support 131, a clamping rod 132, a clamping head rod 133, and a clamping spring 134. The clamping support 131 is connected to the upper annular boss of the conveying turntable 11 by several support rods, and a gap is left between the clamping support 131 and the upper annular boss. The clamping rod 132 passes through the clamping support 131 and the upper annular boss. The bottom end of the clamping rod 132 has a mounting hole corresponding to the clamping head rod 133. The clamping head rod 133 is rotatably connected to the mounting hole at the bottom end of the clamping rod 132 by several bearings, so that the clamping head rod 133 can rotate relative to the clamping rod 132. A connecting boss 1321 protrudes from the outer periphery of the clamping rod 132. The clamping spring 134 is sleeved on the clamping rod 132. The two ends of the clamping spring 134 are respectively connected to the clamping support 131 and the connecting boss 1321. The clamping spring 134 is used to drive the clamping rod 132 to press down to cooperate with the support part 12 to clamp the bottle cap. The spring force of the lifting spring 124 is less than the spring force setting of the compression spring 134.

[0048] When the bottle cap is transferred between the support part 12 and the clamping part 13, the clamping rod 132 of the clamping part 13 drives the clamping head rod 133 to move down through the clamping spring 134, so as to drive the bottom end of the bottle cap into the support column 122 of the support part 12, and make the bottom end of the bottle cap abut against the support ring 123 of the support part 12.

[0049] Reference Figure 4 and Figure 5 The adjustment drive 14 is installed at the bottom of the lower annular boss, and the adjustment drive 14 is specifically used to drive the support base 121 to rotate. In this embodiment, the adjustment drive 14 is a servo motor. After the bottle cap is clamped and fixed by the clamping part 13 and the support part 12, the adjustment drive 14 drives the support base 121 to rotate, which can drive the bottle cap and the pressure head rod of the clamping part 13 to rotate synchronously.

[0050] Reference Figure 4 and Figure 5The inner circumference of the support ring 123 is provided with several limiting protrusions, and the inner circumference of the support column 122 is provided with several limiting grooves corresponding to the limiting protrusions. The top of the limiting groove is open, and the limiting protrusions are embedded in the corresponding limiting grooves. This helps to limit the circumferential rotation of the support ring 123 relative to the support column 122, and ensures that when the adjustment drive component 14 drives the support base 121 to rotate, the support ring 123 can stably drive the bottle cap to rotate.

[0051] Reference Figure 3 and Figure 4 The conveyor turntable 11 is provided with a feeding station corresponding to the feeding mechanism 2. The feeding mechanism 2 includes a feeding conveyor belt 21 and a feeding component 22; the feeding component 22 is located close to the feeding station, and the feeding conveyor belt 21 and the feeding component 22 cooperate to transport the bottle caps to be labeled to the clamping component located at the feeding station.

[0052] Reference Figure 3 and Figure 6 The feeding assembly 22 includes a feeding star wheel 221, a star wheel drive, and a feeding arc-shaped baffle 222 located at the output end of the feeding conveyor belt 21. The feeding star wheel 221 is rotatably connected to the output end of the feeding conveyor belt 21 via a bracket. The outer circumference of the feeding star wheel 221 has a groove for inserting bottle caps. The movement path of the groove in the feeding star wheel 221 and the movement path of the clamping assembly at the conveyor turntable 11 both pass through the feeding station. The star wheel drive is used to drive the feeding star wheel 221 to rotate; specifically, the star wheel drive is a servo motor. The feeding arc-shaped baffle 222 is supported on the outside of the feeding star wheel 221, with both ends extending to the feeding stations of the feeding conveyor belt 21 and the conveyor turntable 11, respectively, and cooperating with the feeding star wheel 221 to form a bottle cap conveying channel. In other embodiments, the feeding assembly 22 can also use a robotic arm to transfer bottle caps.

[0053] Reference Figure 3 and Figure 6 The conveyor turntable 11 is provided with a feeding station corresponding to the feeding mechanism 6. The feeding mechanism 6 includes a feeding conveyor belt 61 and a feeding component 62. The feeding component 62 is located close to the feeding station. The feeding conveyor belt 61 works with the feeding component 62 to receive and transport bottle caps that have moved to the clamping component at the feeding station.

[0054] Reference Figure 3 and Figure 6 The specific structure of the unloading component 62 is the same as that of the loading component 22, so it will not be described in detail. In other embodiments, the unloading component 62 can also use a robotic arm to transfer the bottle cap.

[0055] Reference Figures 5 to 7The loading and unloading stations of the conveyor turntable 11 are arranged close to each other. Each clamping rod 132 is equipped with a linkage component; a linkage part is supported on the outer side of the conveyor turntable 11, and the linkage part is fixed to the worktable by a bracket, located above both the loading and unloading stations of the conveyor turntable 11. When the conveyor turntable 11 moves the clamping assembly to the loading and unloading stations, the linkage component and the linkage part work together to cause the clamping rod 132 to move the pressure head rod 133 away from the corresponding support part 12, facilitating the clamping of the loading assembly 22 and the unloading assembly 62, and the transfer of the clamped bottle caps.

[0056] Reference Figure 5 and Figure 7 The linkage component includes a linkage roller 8 rotatably connected to the outside of the connecting boss 1321. The linkage roller 8 is horizontally axially positioned and located on the side of the connecting boss 1321 opposite to the conveying turntable 11. The linkage part includes a linkage cam 9, which is fixed to the worktable by a bracket. The linkage cam 9 is coaxially arranged with the conveying turntable 11. The linkage cam 9 is arc-shaped, and a guide rail 91 with a high center and low ends is formed on the upper part of the linkage cam 9. The guide rail 91 is located on the moving path of the linkage roller 8 at the clamping rod 132.

[0057] Reference Figure 5 and Figure 7 When the conveyor turntable 11 drives the linkage roller 8 of the clamping part 13 to abut against the guide rail 91 of the linkage cam 9, the guide rail 91, in conjunction with the linkage roller 8, lifts the clamping rod 132 upward, causing the clamping rod 132 to drive the pressure head rod 133 to move away from the support part 12. This facilitates the unloading assembly 62 to receive and transfer bottle caps located between the clamping part 13 and the support part 12, and facilitates the loading assembly 22 to transfer bottle caps between the clamping part 13 and the support part 12. When the conveyor turntable 11 drives the linkage roller 8 of the clamping part 13 to leave the guide rail 91 of the linkage cam 9, the clamping rod 132, through the clamping spring 134, drives the pressure head rod 133 downward, so as to cooperate with the support part 12 to clamp and fix the bottle cap.

[0058] Reference Figure 3 and Figure 5 The control system uses an existing industrial vision controller. The positioning mechanism 3 is used to cooperate with the adjustment drive 14 to drive the corresponding clamping assembly to rotate, so as to check and adjust the labeling position of the bottle cap to the set labeling position. The positioning mechanism 3 specifically includes a first positioning camera 31 and a second positioning camera 32 arranged sequentially along the conveying path of the clamping assembly.

[0059] Reference Figure 3 and Figure 5 The adjustment drive unit 14, the first positioning camera 31, and the second positioning camera 32 are all electrically connected to the control system. The first positioning camera 31 and the second positioning camera 32 are used to acquire images of the bottle cap and feed them back to the control system.

[0060] Specifically, when the clamping assembly moves the bottle cap past the first positioning camera 31, the control system controls the adjustment drive 14 to drive the clamping assembly to rotate the bottle cap at a uniform speed. At the same time, the control system controls the first positioning camera 31 to continuously acquire images of the rotating bottle cap and feeds the images back to the control system. After receiving the image stream, the control system uses an edge detection algorithm to identify the actual pixel position of the preset mark point on the bottle cap in the image coordinate system. The preset mark point is a groove structure formed during the injection molding of the bottle cap. The groove structure is located 180° opposite the labeling position. After identifying the center point of the groove structure, the control system automatically superimposes the pre-stored 180° phase compensation parameters to calculate the actual current position of the labeling position. Then, the control system compares the actual position of the labeling position with the pre-stored target image position to calculate the angle deviation, and then calculates the first angle required to adjust the current labeling position of the bottle cap to the set position. Finally, the control system controls the adjustment drive 14 to drive the bottle cap to rotate by the first angle to initially correct and adjust the labeling position of the bottle cap to the set position.

[0061] When the clamping assembly passes the second positioning camera 32, the control system controls the second positioning camera 32 to continuously acquire images of the bottle cap of the clamping assembly; and extracts the actual center coordinates of the feature area of ​​the labeling location from the image using a template matching algorithm, compares them with the pre-stored standard target position to detect residual angular deviation; if the deviation exceeds a preset threshold, the second angle required for correction is calculated and the adjustment drive 14 is controlled to rotate the clamping assembly and bottle cap by the second angle for correction compensation; if the deviation does not exceed the threshold, the result is considered qualified. The first positioning camera 31 and the second positioning camera 32 are used to eliminate accumulated errors.

[0062] Reference Figure 3 and Figure 5 Light sources are provided at the first positioning camera 31 and the second positioning camera 32 to facilitate clear acquisition of bottle cap images. In this embodiment, both the first positioning camera 31 and the second positioning camera 32 are equipped with synchronously triggered encoders, which work in conjunction with the conveyor turntable 11 to acquire images.

[0063] Reference Figure 8 and Figure 9The labeling mechanism 4 is used to affix anti-counterfeiting labels to the labeling area of ​​the bottle cap. The labeling mechanism 4 includes a labeling base 41 fixed to the workbench. The labeling base 41 is equipped with a feeding roller 42, a labeling plate 43, a waste roller 44, and a winding drive. The feeding roller 42 is used to feed the label roll, which has a backing paper structure. The labeling plate 43 is fixed to the labeling base 41 by a bracket; the labeling plate 43 is close to the conveyor turntable 11, tangentially positioned on the outer periphery of the conveyor turntable 11, and the end of the labeling plate 43 closest to the conveyor turntable 11 is a peeling end, used for wrapping the label roll. The waste roller 44 is used to fix the backing paper of the label roll, and the winding drive is used to drive the waste roller 44 to rotate and wind up the backing paper of the label roll.

[0064] After the label roll is wound around the peeling end of the labeling plate 43 and the backing paper is fixed to the waste roller 44, the waste roller 44 is driven to rotate by the winding drive, which releases the label roll located on the unloading roller 42. When the anti-counterfeiting label moves with the backing paper to the peeling end of the labeling plate 43, the anti-counterfeiting label is peeled off from the backing paper and pasted onto the bottle cap that has moved to the labeling mechanism 4 at this time, thus completing the automatic pasting of the anti-counterfeiting label.

[0065] The labeling base 41 is also equipped with a tensioning roller assembly to assist in tensioning the label roll. The labeling plate 43 includes an input side and an output side, with the input side positioned away from the conveyor turntable 11. The labeling base 41 is also equipped with a support brush 45, which is supported by a bracket on the output side of the labeling plate 43. The support brush 45 is positioned closer to the conveyor turntable 11 than the peeling end of the labeling plate 43. The support brush 45 is made of soft nylon bristles, and the gap between the bristles of the support brush 45 and the label is less than the label thickness. The support brush 45 is used to temporarily support the anti-counterfeiting label detached from the label roll backing paper, thereby limiting the anti-counterfeiting label from drifting outward away from the peeling end of the labeling plate 43. When the bottle cap at the clamping assembly passes the support brush 45, a gap is left between the support brush 45 and the bottle cap.

[0066] It is understood that in other embodiments, when the anti-counterfeiting label is wide, when the conveyor turntable 11 drives the clamping assembly to stick the anti-counterfeiting label to the labeling plate 43, the control system can adjust the drive component 14 to drive the clamping assembly to swing the bottle cap relative to the labeling plate 43, so as to assist the anti-counterfeiting label to be pasted to the labeling area of ​​the bottle cap.

[0067] Reference Figure 8 and Figure 10 The label pressing mechanism 5 includes a label pressing base 51 and a follower drive 52. The label pressing base 51 is supported on the outer periphery of the conveyor turntable 11, and the follower drive 52 is used to drive the label pressing base 51 to follow the circumference of the conveyor turntable 11.

[0068] Reference Figure 8 and Figure 10Specifically, the follower drive component 52 includes a follower base 521 and a follower servo motor 522. The label-pressing base 51 is arc-shaped and coaxially arranged with the conveyor turntable 11. An arc-shaped slide rail is arranged parallel to the bottom of the label-pressing base 51, and a slide block is provided on the follower base 521 corresponding to the arc-shaped slide rail. The label-pressing base 51 is slidably connected to the follower base 521 through the arc-shaped slide rail and the slider, so that the label-pressing base 51 can move stably around the axial direction of the conveyor turntable 11. A drive rack 511 is formed on the outer side of the label-pressing base 51. The follower servo motor 522 is mounted on the follower base 521, and the output end of the follower servo motor 522 meshes with the drive rack 511 through a drive gear 523.

[0069] Reference Figure 8 and Figure 10 The label-pressing base 51 is supported by several flexible pressing blocks 53 and several label-pressing driving components 54. The label-pressing driving components 54 are used to drive the corresponding flexible pressing blocks 53 to move relative to the clamping assembly of the conveyor turntable 11. Specifically, the flexible pressing blocks 53 are made of sponge, and the label-pressing driving components 54 are cylinders.

[0070] Reference Figure 8 and Figure 10 When the conveyor turntable 11 moves the clamping assembly and the labeled bottle cap to the label pressing mechanism 5, the follower drive 52 drives the label pressing base 51 to move the flexible pressing block 53 at the same speed as the target clamping assembly, so that the flexible pressing block 53 and the bottle cap on the target clamping assembly remain relatively stationary. The label pressing drive 54 then drives the flexible pressing block 53 to move closer to the target bottle cap to press the anti-counterfeiting label on the bottle cap. This achieves the pressing operation of the anti-counterfeiting label without damaging it. After pressing, the label pressing drive 54 first drives the flexible pressing block 53 to move backward and reset, and then the follower servo motor 522 drives the label pressing base 51 to reset, so as to perform the label pressing process for the next set of bottle caps.

[0071] Reference Figure 2 and Figure 3 The rejecting assembly includes a rejecting camera 71 and a rejecting air gun 72. The rejecting air gun 72 is a pulse-type high-pressure air gun. The rejecting camera 71 is located between the labeling mechanism 5 and the unloading mechanism 6, and the rejecting air gun 72 is mounted on one side of the input end of the unloading conveyor belt 61. Both the rejecting camera 71 and the rejecting air gun 72 are electrically connected to the control system. The rejecting camera 71 is used to acquire images of the bottle caps after labeling and transmit them to the control system. Specifically, when the clamping assembly carries the bottle cap with the applied label past the rejection camera 71, the rejection camera 71 acquires an image of the bottle cap and feeds it back to the control system. The control system uses the image fed back by the rejection camera 71 and an image recognition algorithm to identify defects such as missing labels, offsets, and wrinkles, in order to determine whether the anti-counterfeiting label is properly affixed. When a bottle cap with an unqualified label moves to the rejection air gun 72, the control system controls the rejection air gun 72 to blow the unqualified bottle cap off the unloading conveyor belt 61. In this embodiment, the rejection camera 71 is triggered to acquire a signal via an encoder, and the rejection air gun 72 is triggered to blow a signal via a photoelectric sensor.

[0072] The implementation principle of this application embodiment is as follows: Bottle cap feeding: After the bottle caps to be labeled are transferred to the clamping component of the conveying mechanism 1 by the feeding mechanism 2, the clamping component and the bottle caps are conveyed along a fixed path by the conveying turntable 11.

[0073] Bottle cap labeling verification: When the clamping assembly moves the bottle cap to the positioning mechanism 3, the positioning mechanism 3, in conjunction with the adjustment drive 14 at the conveying mechanism 1, verifies and adjusts the bottle cap labeling position to the set labeling position.

[0074] Anti-counterfeiting label affixing: When the clamping component moves the bottle cap to the labeling mechanism 4, the anti-counterfeiting label is affixed to the labeling area of ​​the bottle cap by the labeling mechanism 4.

[0075] Anti-counterfeiting label pressing and bonding: When the clamping component moves the bottle cap to the label pressing mechanism 5, the follower drive component 52 drives the label pressing base 51 to move the flexible pressing block 53 at the same speed as the target clamping component, and the label pressing drive component 54 drives the flexible pressing block 53 to press and fix the anti-counterfeiting label on the bottle cap.

[0076] Bottle cap transfer: The bottle caps that have been labeled are transferred by the feeding mechanism 6, and the unloading mechanism 7 removes the bottle caps that are not labeled.

[0077] In the process of pressing the anti-counterfeiting label, this application keeps the flexible pressing block 53 and the target bottle cap at the same speed, so that the flexible pressing block 53 and the target bottle cap remain relatively stationary, thereby completing the pressing operation of the anti-counterfeiting label without damaging it.

[0078] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A labelling apparatus characterised in that: It includes a conveying mechanism (1), a feeding mechanism (2), a positioning mechanism (3), a labeling mechanism (4), a label pressing mechanism (5), and a discharging mechanism (6); The conveying mechanism (1) includes a conveying turntable (11) and a conveying drive (10). The conveying drive (10) is used to drive the conveying turntable (11) to rotate. The outer periphery of the conveying turntable (11) is evenly distributed with a plurality of clamping components for clamping bottle caps and an adjusting drive (14) for driving the clamping components to rotate. The feeding mechanism (2), the positioning mechanism (3), the labeling mechanism (4), the label pressing mechanism (5), and the unloading mechanism (6) are distributed along the conveying path of the clamping assembly; The feeding mechanism (2) is used to transport the bottle caps to be labeled to the clamping assembly; The positioning mechanism (3) is used in conjunction with the adjustment drive (14) to drive the corresponding clamping assembly to rotate, so as to check and adjust the labeling position of the bottle cap to the set labeling position; The labeling mechanism (4) is used to affix the anti-counterfeiting label to the labeling area on the bottle cap; The label pressing mechanism (5) includes a label pressing base (51) and a follower drive (52). The follower drive (52) is used to drive the label pressing base (51) to move around the circumference of the conveying turntable (11). The label pressing base (51) is supported by a flexible pressing block (53) and a label pressing drive (54). The label pressing drive (54) is used to drive the flexible pressing block (53) to move relative to the clamping assembly of the conveying turntable (11). When the conveying turntable (11) drives the clamping assembly and the bottle cap after labeling to the label pressing mechanism (5), the follow-up drive (52) drives the label pressing base (51) to drive the flexible pressing block (53) to move at the same speed as the target clamping assembly to maintain relative stillness, and the label pressing drive (54) drives the flexible pressing block (53) to move toward the bottle cap close to the clamping assembly to press the anti-counterfeiting label on the bottle cap; The feeding mechanism (6) is used to receive and transport bottle caps that have been stamped.

2. A labelling apparatus according to claim 1, characterised in that: It also includes the control system; The positioning mechanism (3) includes a first positioning camera (31) and a second positioning camera (32) arranged sequentially along the conveying path of the clamping assembly; the adjustment drive (14), the first positioning camera (31) and the second positioning camera (32) are all electrically connected to the control system; When the clamping assembly passes the first positioning camera (31), the control system controls the adjustment drive (14) to drive the clamping assembly to rotate the bottle cap. The first positioning camera (31) acquires the image of the bottle cap rotation and feeds it back to the control system. Based on the feedback image, the control system controls the adjustment drive (14) to perform a first angle correction on the labeling area of ​​the bottle cap so as to initially adjust the labeling area of ​​the bottle cap to the set position. When the clamping assembly passes the second positioning camera (32), the second positioning camera (32) acquires an image of the bottle cap and feeds it back to the control system. Based on the feedback image, the control system controls the adjustment drive (14) to perform a second angle correction on the labeling area of ​​the bottle cap, so as to accurately adjust the labeling area of ​​the bottle cap to the set position.

3. A labelling apparatus according to claim 1, wherein: The labeling mechanism (4) includes a labeling base (41), which is provided with a feeding roller (42), a labeling plate (43), a waste roller (44), and a winding drive. The feeding roller (42) is used to feed the label roll into the label roll; The labeling plate (43) is positioned close to the conveyor turntable (11), and one end of the labeling plate (43) close to the conveyor turntable (11) is the peeling end; the peeling end is used for wrapping the label roll. The waste roller (44) is used to fix the bottom paper of the label roll, and the winding drive is used to drive the waste roller (44) to rotate to wind up the bottom paper of the label roll.

4. A labelling apparatus according to claim 3, wherein: The labeling plate (43) includes an input side and an output side, with the output side positioned away from the conveyor turntable (11). The labeling base (41) is also provided with a support brush (45), which is located on the output side of the labeling plate (43) and is positioned closer to the conveyor turntable (11) than the peeling end of the labeling plate (43). The support brush (45) is used to temporarily support the anti-counterfeiting label that has detached from the label roll backing paper, so as to limit the anti-counterfeiting label from drifting outward away from the peeling end of the labeling plate (43).

5. A labelling apparatus according to claim 3, wherein: When the conveyor turntable (11) drives the clamping assembly to stick the anti-counterfeiting label to the labeling plate (43), the adjusting drive (14) drives the clamping assembly and the bottle cap to swing relative to the labeling plate (43) to assist the anti-counterfeiting label to be pasted to the labeling area of ​​the bottle cap.

6. A labelling apparatus according to claim 1, characterised in that: The conveyor turntable (11) is provided with a loading station and a unloading station respectively corresponding to the loading mechanism (2) and the unloading mechanism (6); The feeding mechanism (2) includes a feeding conveyor belt (21) and a feeding assembly (22). The feeding conveyor belt (21) works in conjunction with the feeding assembly (22) to move the bottle cap to be labeled to the clamping assembly located at the feeding station. The feeding mechanism (6) includes a feeding conveyor belt (61) and a feeding assembly (62). The feeding conveyor belt (61) works in conjunction with the feeding assembly (62) to receive and transfer bottle caps that have been stamped.

7. A labelling apparatus according to claim 6, characterised in that: The clamping assembly includes a support part (12) and a clamping part (13); the support part (12) and the clamping part (13) are located at the bottom and top of the conveying turntable (11), respectively; The support part (12) is used for the bottom end of the bottle cap to abut; The clamping part (13) includes a clamping support (131), a clamping rod (132), a pressure head rod (133), and a clamping spring (134). The clamping support (131) is connected to the conveying turntable (11). The clamping rod (132) passes through the clamping support (131). A connecting boss (1321) protrudes from the outer periphery of the clamping rod (132). The pressure head rod (133) is rotatably connected to the bottom end of the clamping rod (132). The clamping spring (134) is sleeved on the clamping rod (132). Both ends of the clamping spring (134) are respectively connected to the clamping support (131) and the connecting boss (1321). The clamping spring (134) is used to drive the clamping rod (132) to move the pressure head rod (133) down to cooperate with the support part (12) to clamp the bottle cap. Each clamping rod (132) is equipped with a linkage component; a linkage part is supported on the outside of the conveying turntable (11), and the linkage part is located above both the loading station and the unloading station of the conveying turntable (11); When the conveyor turntable (11) moves the clamping assembly to the loading station and the unloading station, the linkage component and the linkage part work together to make the clamping rod (132) move the clamping head rod (133) away from the corresponding support part (12).

8. A labelling apparatus according to claim 7, characterised in that: The support part (12) includes a support base (121), the support base (121) is provided with a support column (122), and a support ring (123) and a lifting spring (124) are sleeved on the outer periphery of the support column (122). The two ends of the lifting spring (124) are respectively connected to the support ring (123) and the support base (121). The support column (122) is used for the bottle cap to be sleeved; the support ring (123) is used for the end of the bottle cap to abut; the lifting spring (124) is used to drive the support ring (123) to move upward so as to push the bottle cap away from the support column (122); the elastic force of the lifting spring (124) is less than the elastic force of the clamping spring (134); the adjusting drive (14) is used to drive the support base (121) to rotate.

9. A labelling apparatus according to claim 8, characterised in that: The inner circumference of the support ring (123) is provided with a limiting protrusion, and the inner circumference of the support column (122) is provided with a limiting groove, and the limiting protrusion is embedded in the limiting groove.

10. A labelling apparatus according to claim 6, characterised in that: It also includes a material rejection assembly; the material rejection assembly includes a material rejection camera (71) and a material rejection air gun (72); the material rejection camera (71) is located between the label pressing mechanism (5) and the unloading mechanism (6), and the material rejection air gun (72) is supported on one side of the unloading conveyor belt (61); The rejection camera (71) and the rejection air gun (72) are both electrically connected to the control system. The rejection camera (71) is used to acquire the image of the bottle cap after the label is pressed and send it to the control system. The control system judges whether the anti-counterfeiting label is pasted correctly based on the image fed back by the rejection camera (71), and controls the rejection air gun (72) to blow the bottle cap with the anti-counterfeiting label not pasted correctly off the unloading conveyor belt (61).

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