Automatic labeling device based on annular conveying

Abstract

The invention discloses an automatic labeling device based on annular conveying, and relates to the technical field of labeling. The device specifically comprises an annular conveying mechanism used for conveying wash supplies and a workbench arranged on one side of the annular conveying mechanism, a detecting and sorting mechanism used for detecting and sorting and a labeling mechanism used for labeling are arranged at the top of the workbench, and the detecting and sorting mechanism is located on the upstream of the labeling mechanism; the detecting and sorting mechanism comprises a view finding camera, a supporting frame and a push plate, the supporting frame is fixed to the outer wall of the top of the workbench through bolts, and the view finding camera is installed on the lower surface of the top of the supporting frame through an installation support. By arranging the detecting and sorting mechanism, whether products are qualified or not is judged in an image comparison mode, and then the telescopic device drives the push plate to push off unqualified products, so that detection before labeling and sorting work after detection are achieved, and the qualified rate of the products is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of labeling, in particular to an automatic labeling device based on ring conveying. BACKGROUND

[0002] Shampoo, hair conditioner, shower gel and other washing and protecting products are generally packaged in plastic bottles. In order to identify the name, type, capacity and other parameters of the washing and protecting products, a labeling device is needed for labeling during production.

[0003] According to the search, a patent with the patent number CN 218490107 U discloses a labeling device for shampoo production, which comprises a support, a conveyor belt connected to one side surface of the support, a drive motor installed on one side surface of the conveyor belt, a conveying mechanism provided at one end of the drive motor, an extrusion mechanism provided on one side surface of the support, a partition connected to the surface of the conveyor belt, and a baffle connected to the other side surface of the conveyor belt.

[0004] The above-mentioned patent has the following disadvantages: it cannot detect defects before labeling, which leads to the fact that products will be labeled regardless of whether they are qualified or not, wasting labels and labeling actions, and also leading to the fact that the quality of finished products cannot be controlled.

[0005] Therefore, the present application proposes an automatic labeling device based on ring conveying. SUMMARY

[0006] The purpose of the present application is to solve the problems existing in the prior art and to provide an automatic labeling device based on ring conveying.

[0007] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] An automatic labeling device based on ring conveying, comprising a ring conveying mechanism for conveying washing and protecting products and a workbench provided on one side of the ring conveying mechanism,

[0009] The top of the workbench is respectively provided with a detection and sorting mechanism for detecting and sorting and a labeling mechanism for labeling, and the detection and sorting mechanism is located upstream of the labeling mechanism.

[0010] The detection and sorting mechanism comprises a viewfinder camera, a support frame and a push plate, the support frame is fixed to the top outer wall of the workbench by bolts, the viewfinder camera is installed on the top lower surface of the support frame by a mounting support, one side outer wall of the support frame is fixed with an extender by bolts, and the push plate is fixed to the extension end of the extender by bolts.

[0011] Preferably, the viewfinder camera and the photoelectric door are arranged together, and they are arranged in a staggered manner with the push plate.

[0012] Further, the detection method of the viewfinder camera comprises the following steps:

[0013] S1: using a qualified washing and care product packaging bottle is placed in the position of the photoelectric gate, and using the viewfinder camera to take a picture as a standard image;

[0014] S2: when actually taking a picture, each viewfinder camera will take a picture of the washing and care product packaging bottle, and after extracting the features of the picture and the standard image, the similarity is calculated, and the similarity result is output;

[0015] S3: then according to the formula the similarity comparison result is output, wherein S i is the similarity result output by the i-th viewfinder camera, n represents a total of n viewfinder cameras, and ω i is the weight;

[0016] S4: set the similarity threshold S σ , if S0≥S σ , it is determined as a qualified product, otherwise it is a defective product.

[0017] On the basis of the foregoing scheme: the annular conveying mechanism is fixed with a guide chute on the other side of the detection and sorting mechanism, and the other end of the guide chute is provided with a defective product storage box placed on the ground.

[0018] In the foregoing scheme, a better scheme is: the labeling mechanism comprises a label feeding assembly located upstream of the conveying and a labeling assembly located downstream of the conveying.

[0019] As a further scheme of the application: the label feeding assembly comprises a supporting turntable, a guide roller, a transition roller and a winding roller, the winding roller, the transition roller, the guide roller are arranged in a "V" shape in plan view and the transition roller is located at the corner of the "V", the winding roller, the transition roller, the guide roller and the supporting turntable are all rotationally connected to the top outer wall of the workbench, and a label roll is placed in position on the top of the supporting turntable, and the free end of the label of the label roll is fixed to the outer wall of the winding roller after being fitted to the outer walls of the guide roller and the transition roller.

[0020] At the same time, the bottom outer wall of the workbench is fixed with a motor through bolts, and the output end of the motor is fixed to the end of the winding roller.

[0021] As a preferred embodiment of the application: the labeling assembly comprises a labeling roller and a supporting plate one, the supporting plate one is fixed to the top outer wall of the workbench through bolts, the outer wall of the labeling roller is rotationally connected with a roller holder, the roller holder is slidingly connected to one side of the supporting plate one through a "T"-shaped guide rod, and a spring is buckled to the opposite side of the supporting plate one.

[0022] Meanwhile, the outer wall of one side of the annular conveying mechanism is fixed with a support plate two, and the photoelectric door two is fixed at the position of the transition roller.

[0023] As a more preferred scheme of the present application: the labeling assembly further comprises a reject plate and a rotating shaft, the reject plate is attached to the outer wall of the release paper layer outside the transition roller, the rotating shaft is fixed to the top outer wall of the workbench, the reject plate is rotationally connected to the outer wall of the rotating shaft, and a torsional spring is buckled between the reject plate and the rotating shaft.

[0024] The present application has the following advantages:

[0025] 1. The present application sets a detection sorting mechanism, uses image comparison to determine whether the product is qualified, and then uses the telescopic actuator to drive the push plate to push the unqualified product, thereby realizing the detection before labeling and the sorting after detection, and improving the qualified rate of the product.

[0026] 2. The present application sets multiple view cameras based on the similarity comparison of the view cameras to determine whether it is qualified, which can increase the range of view and thus increase the judgment accuracy. Meanwhile, the similarity calculation results of the multiple view cameras are weighted and summed, and the weight is positively correlated with the view range of the view camera, which further increases the judgment accuracy.

[0027] 3. The present application arranges the mounting bracket, the photoelectric door one and the push plate in a staggered manner, which realizes the upstream detection and downstream sorting operation, so that the image comparison can be completed during the conveying time interval between the two stations, thereby preventing sorting failure caused by algorithm delay and increasing the practical reliability of the device.

[0028] 4. The present application sets the labeling assembly and the labeling assembly, which can separate the label layer and the release paper layer of the label and preliminarily attach to the outer surface of the washing and cleaning product, and then use the labeling roller to realize the compaction of the label layer by rolling along the outer side of the washing and cleaning product with a certain pressure, thereby realizing the entire automatic labeling process and ensuring the labeling effect.

[0029] 5. The present application sets the reject plate and the rotating shaft, which uses the torsional force provided by the torsional spring to tightly attach the reject plate to the outer wall of the release paper layer outside the transition roller, so that the reliable separation of the release paper layer and the label layer can be realized by the scraping action of the transition roller, thereby ensuring the reliable automatic labeling. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The present application proposes a whole structure schematic diagram of an automatic labeling device based on annular conveying;

[0031] Figure 2A detection and sorting mechanism structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0032] Figure 3 A guide slide and defective product storage box structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0033] Figure 4 A labeling mechanism structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0034] Figure 5 A labeling mechanism overhead structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0035] Figure 6 A motor structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0036] Figure 7 A plate ejecting structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0037] Figure 8 A ring conveying mechanism structure schematic view of an automatic labeling device based on ring conveying is provided in the present application.

[0038] In the figure: 1, ring conveying mechanism; 2, workbench; 3, detection and sorting mechanism; 4, labeling mechanism; 5, viewfinder camera; 6, mounting bracket; 7, support frame; 8, telescopic device; 9, photoelectric gate 1; 10, push plate; 11, guide slide; 12, defective product storage box; 13, labeling assembly; 14, labeling assembly; 15, support turntable; 16, label roll; 17, winding roller; 18, transition roller; 19, labeling roller; 20, roller frame; 21, spring; 22, support plate 1; 23, "T" type guide rod; 24, guide roller; 25, motor; 26, plate ejecting; 27, rotating shaft; 28, support leg; 29, rack; 30, ring conveying assembly; 31, opening profiled groove; 32, support limiting frame; 33, torsional spring; 34, support plate 2; 35, photoelectric gate 2. DETAILED DESCRIPTION

[0039] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0040] Embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0041] Example 1:

[0042] An automatic labeling device based on a circular conveyor, such as Figures 1-8 As shown, it includes a ring conveyor mechanism 1 for conveying toiletries and a workbench 2 located on one side of the ring conveyor mechanism 1. The top of the workbench 2 is respectively provided with a detection and sorting mechanism 3 for detection and sorting and a labeling mechanism 4. The detection and sorting mechanism 3 is located upstream of the labeling mechanism 4.

[0043] The detection and sorting mechanism 3 includes a viewfinder camera 5, a support frame 7, and a push plate 10. The support frame 7 is fixed to the top outer wall of the workbench 2 by bolts. The viewfinder camera 5 is installed on the top lower surface of the support frame 7 by a mounting bracket 6. In this embodiment, the specific number and position of the viewfinder camera 5 are not limited. Preferably, there are three viewfinder cameras 5, with the middle viewfinder camera 5 located directly above the toiletries and shooting vertically downwards, and the other two viewfinder cameras 5 located on both sides and shooting downwards at an angle. A telescopic device 8 is fixed to one side outer wall of the support frame 7 by bolts, and the push plate 10 is fixed to the telescopic end of the telescopic device 8 by bolts.

[0044] The viewfinder camera 5 and the photoelectric gate 9 are arranged in the same position, and they are both staggered from the push plate 10. That is, when one of the toiletries located upstream is aligned with the position of the photoelectric gate 9 and the viewfinder camera 5, the push plate 10 is located at the position of the other toiletries located downstream.

[0045] When in use, this device can transport toiletries through the ring conveyor mechanism 1. When the toiletries are transported to the photoelectric gate 9, they are sensed by the photoelectric gate 9. At this time, multiple viewfinder cameras 5 are activated to take pictures of the toiletries. Then, the actual pictured image is compared with the pre-stored image of qualified products. If the match is successful, it can be determined as a qualified product, and the telescopic device 8 does not move. If the match is unsuccessful, the timer is set at the moment the viewfinder camera 5 takes the picture. At the same time, according to the conveying speed v and the lateral distance L between the photoelectric gate 9 and the push plate 10, after an interval of L / v, the telescopic device 8 is activated, which drives the push plate 10 to move and push the toiletries off the ring conveyor mechanism 1.

[0046] This device, by setting up a detection and sorting mechanism 3, uses image comparison to determine whether the product is qualified. Then, the push plate 10 driven by the telescopic device 8 can push the unqualified products off, thereby realizing the detection before labeling and the sorting after detection, and improving the product qualification rate.

[0047] The detection method for the viewfinder camera 5 includes the following steps:

[0048] S1: Place a qualified toiletries bottle at position 9 of the photoelectric gate and take a picture using the viewfinder camera 5 as the standard image.

[0049] S2: During actual framing, each framing camera 5 takes a photo of the package bottle of the washing and caring product, and after extracting the standard image features, similarity calculation is performed, such as cosine similarity, Euclidean distance, Manhattan distance, etc., and the similarity result is output;

[0050] S3: Then, according to the formula the similarity comparison result is output, where S i is the similarity result output by the i-th framing camera 5, n represents a total of n framing cameras 5, ω i is the weight, which is determined according to the feature points in the framing photo of the framing camera 5, the larger the framing area of the framing camera 5, the more feature points it has, and the larger the corresponding weight;

[0051] S4: Set the similarity threshold S σ , if S0≥S σ , it is determined as a qualified product, otherwise it is a unqualified product.

[0052] Based on the similarity comparison judgment of the framing camera 5, by setting multiple framing cameras 5, the range of framing is increased, thereby increasing the judgment accuracy, and the weighted sum form is used for the similarity calculation results of the multiple framing cameras 5, and the weight is positively correlated with the framing range of the framing camera 5, which further increases the judgment accuracy.

[0053] In addition, since the image acquisition and image comparison have a certain calculation time, if the framing camera 5, the photoelectric door 9 and the push plate 10 are arranged in the same position, it may be impossible to reliably sort due to the calculation time, and the unqualified product has been conveyed and driven out of the range of the push plate 10, thereby being unable to reliably sort, based on this:

[0054] The device realizes the operation form of upstream detection and downstream sorting by arranging the mounting bracket 6 and the photoelectric door 9 and the push plate 10 in a staggered manner, so that the image comparison can be completed within the conveying time interval between the two stations, thereby preventing sorting failure caused by calculation delay and increasing the practical reliability of the device.

[0055] In order to solve the problem of collecting unqualified products; as shown in Figure 3 The ring-shaped conveying mechanism 1 is fixed on the other side of the detection and sorting mechanism 3 with a guide chute 11, and the other end of the guide chute 11 is provided with a defective product storage box 12 placed on the ground.

[0056] After being pushed by the push plate 10, the unqualified product will slow down and buffer along the guide chute 11, and finally fall into the defective product storage box 12 for collection.

[0057] In order to solve the problem of labeling; as shown in Figures 4-7As shown, the labeling mechanism 4 comprises a label feeding assembly 14 located upstream of the conveying and a labeling assembly 13 located downstream of the conveying.

[0058] The label feeding assembly 14 comprises a supporting turntable 15, a guide roller 24, a transition roller 18 and a winding roller 17, the winding roller 17, the transition roller 18 and the guide roller 24 are arranged in a "V" shape in plan view and the transition roller 18 is located at the corner of the "V", the winding roller 17, the transition roller 18, the guide roller 24 and the supporting turntable 15 are all rotationally connected to the top outer wall of the workbench 2, and the top of the supporting turntable 15 is limitedly placed with a label roll 16, and the free end of the label of the label roll 16 is once fitted to the outer wall of the guide roller 24 and the transition roller 18 and then fixed to the outer wall of the winding roller 17.

[0059] The bottom outer wall of the workbench 2 is fixed with a motor 25 by bolts, and the output end of the motor 25 is fixed to the end of the winding roller 17.

[0060] The labeling assembly 13 comprises a labeling roller 19 and a supporting plate one 22, the supporting plate one 22 is fixed to the top outer wall of the workbench 2 by bolts, and the outer wall of the labeling roller 19 is rotationally connected with a roller frame 20, the roller frame 20 is slidingly connected to one side of the supporting plate one 22 through a "T" shaped guide rod 23, and the opposite side of the supporting plate one 22 is buckled with a spring 21.

[0061] One side outer wall of the annular conveying mechanism 1 is fixed with a supporting plate two 34 by bolts, and the supporting plate two 34 is fixed with a photoelectric door two 35 at the position of the transition roller 18.

[0062] When the motor 25 is started, it can drive the winding roller 17 to rotate, thereby pulling the release paper layer of the label to move along the path of the guide roller 24 and the transition roller 18, when the label layer adhered to the outside of the release paper layer passes through the transition roller 18, since the transition roller 18 is located at the corner of the "V", the release paper layer is separated from one end of the label layer, at this time, moving a distance, the separation end of the label layer and the release paper layer is located on the moving path of the washing and cleaning product, then when the washing and cleaning product moves to the label, it is sensed by the photoelectric door two 35, at this time, the label is preliminarily attached to the outside of the washing and cleaning product, at the same time, the motor 25 continues to start to completely convey the remaining label, and the whole label is separated from the release paper layer by the preliminary adhesion, when the washing and cleaning product passes through the labeling roller 19, since the labeling roller 19 interferes with the movement path of the washing and cleaning product, the labeling roller 19 is extruded outward by the washing and cleaning product, so that the labeling roller 19 rolls along the outside of the washing and cleaning product with a certain pressure, thereby flattening and labeling the label by pressure.

[0063] In order to solve the reliable analysis problem of the label layer and the release paper layer, as shown in Fig. 7, the labeling assembly 14 further comprises a stripping plate 26 and a rotating shaft 27, the stripping plate 26 is attached to the outer wall of the release paper layer outside the transition roller 18, the rotating shaft 27 is fixed to the top outer wall of the workbench 2, the stripping plate 26 is rotationally connected to the outer wall of the rotating shaft 27, and a torsional spring 33 is buckled between the stripping plate 26 and the rotating shaft 27.

[0064] The device, by setting the labeling assembly 14 and the labeling assembly 14, can separate the label layer and the release paper layer of the label and preliminarily attach to the outer surface of the washing and protecting product, and then use the rolling movement of the coating roller 19 along the outer side of the washing and protecting product with a certain pressure to realize the compaction of the label layer, thereby realizing the whole automatic labeling process and ensuring the labeling effect.

[0065] The device, by setting the stripping plate 26 and the rotating shaft 27, uses the torsional force provided by the torsional spring 33, and the stripping plate 26 can be closely attached to the outer wall of the release paper layer outside the outer wall of the transition roller 18, so as to realize the reliable separation of the release paper layer and the label layer by using the scraping action of the transition roller 18, thereby ensuring the reliable automatic labeling.

[0066] In use, the washing and protecting product can be conveyed by the annular conveying mechanism 1, and when the washing and protecting product is conveyed to the photoelectric gate 9, it is sensed by the photoelectric gate 9, at this time, the multiple viewfinder cameras 5 start to take pictures of the washing and protecting product, then the actually taken pictures are compared with the pre-stored qualified product images, if the matching is successful, it is determined as a qualified product, and the extender 8 is not actuated, if the matching is not successful, the extender 8 is actuated at the time of taking pictures by the viewfinder camera 5, and according to the conveying speed v, the horizontal distance L between the photoelectric gate 9 and the push plate 10, after the interval L / v time, the extender 8 is actuated to drive the push plate 10 to move, and the washing and protecting product is pushed off from the annular conveying mechanism 1, when the motor 25 is actuated, it can drive the winding roller 17 to rotate, thereby pulling the release paper layer of the label to move along the path of the guide roller 24 and the transition roller 18, when the label layer attached to the outer side of the release paper layer passes through the transition roller 18, since the transition roller 18 is located at the corner of the "V" type, the end of the release paper layer and the label layer is separated, at this time, the label layer and the release paper layer are separated by a certain distance, and then when the washing and protecting product moves to the label, it is sensed by the photoelectric gate 2, at this time, the label is preliminarily attached to the outer side of the washing and protecting product, and at the same time, the motor 25 continues to be actuated to completely convey the remaining label, and the entire label and the release paper layer are separated by the preliminary adhesion, and when the washing and protecting product passes through the coating roller 19, since the coating roller 19 interferes with the movement path of the washing and protecting product, the coating roller 19 is extruded outward by the washing and protecting product, so that the coating roller 19 rolls along the outer side of the washing and protecting product with a certain pressure, thereby flattening and coating the label by pressure.

[0067] Example 2:

[0068] An automatic labeling device based on a circular conveyor, such as Figure 1 As shown, in order to solve the conveying problem, this embodiment makes the following improvements based on embodiment 1: The annular conveying mechanism 1 includes a frame 29, an annular conveying assembly 30 and multiple support and limiting frames 32. The frame 29 is supported on the ground by support legs 28. The annular conveying assembly 30 is disposed inside the frame 29. The multiple support and limiting frames 32 are fixed to the top outer wall of the moving end of the annular conveying assembly 30. The inner wall of the support and limiting frame 32 is provided with an opening contour groove 31 that matches the shape of the washing and care product packaging bottle.

[0069] The opening contour groove 31 is slightly larger than the size of the toiletries packaging bottle, about 2-5mm, so that there is a certain gap between it and the toiletries packaging bottle. The opening width of the opening contour groove 31 is slightly smaller than the width of the toiletries packaging bottle, about 5mm. This ensures that the toiletries packaging bottle will not fall off during normal transportation. At the same time, when the toiletries packaging bottle is a defective product, it can be pushed off the opening contour groove 31 by the push plate 10 combined with the elastic deformation of the toiletries packaging bottle itself.

[0070] In this embodiment, the specific type of the annular conveying component 30 is not limited, as it is existing technology, such as the invention patent with publication number CN109775239A. This embodiment only uses it for its functionality and does not make any creative effort, so it will not be described in detail.

[0071] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ring conveying based automatic labeling device for washing and cleaning products, comprising a ring conveying mechanism (1) for conveying the washing and cleaning products and a workbench (2) arranged on one side of the ring conveying mechanism (1), characterized in that, a detection and sorting mechanism (3) for detecting and sorting is arranged on the top of the workbench (2), and a labeling mechanism (4) for labeling is arranged downstream of the detection and sorting mechanism (3); the detection and sorting mechanism (3) comprises a view camera (5), a support frame (7) and a push plate (10), the support frame (7) is fixed to the outer wall of the top of the workbench (2) by bolts, the view camera (5) is installed on the top lower surface of the support frame (7) by a mounting bracket (6), one side of the outer wall of the support frame (7) is fixed with an extender (8) by bolts, and the push plate (10) is fixed to the extension end of the extender (8) by bolts.

2. An automatic labelling device based on ring conveyance according to claim 1, characterized in that, The view camera (5) and the photoelectric gate (9) are arranged in the same position, and they are arranged in different positions with the push plate (10).

3. An automatic labelling device based on ring conveyance according to claim 1, characterized in that, The detection method of the view camera (5) comprises the following steps: S1: a qualified washing and cleaning product packaging bottle is placed at the position of the photoelectric gate (9), and a standard image is taken by the view camera (5); S2: during actual viewing, each view camera (5) takes a photo of the washing and cleaning product packaging bottle, extracts the features of the photo and the standard image, calculates the similarity, and outputs the similarity result; S3: Then, according to the formula Transport similarity comparison results, where S i is the similarity result output by the i-th camera (5), n represents a total of n cameras (5), ω i is the weight; S4: Set similarity threshold S σ , if S0≥S σ , then determine as a good product, otherwise as a defective product.

4. An automatic labelling device based on ring conveyance according to claim 1, characterized in that, a guide chute (11) is fixed on the other side of the detection and sorting mechanism (3) of the ring conveying mechanism (1), and a defective product storage box (12) is arranged at the other end of the guide chute (11).

5. An automatic labelling device based on ring conveyance according to claim 1, characterized in that, The labeling mechanism (4) comprises a label feeding assembly (14) arranged upstream of the conveying and a labeling assembly (13) arranged downstream of the conveying.

6. An automatic labelling device based on ring conveyance according to claim 5, characterized in that, The label feeding assembly (14) comprises a support turntable (15), a guide roller (24), a transition roller (18) and a winding roller (17), the winding roller (17), the transition roller (18) and the guide roller (24) are arranged in a "V" shape in plan view, and the transition roller (18) is located at the corner of the "V", the winding roller (17), the transition roller (18), the guide roller (24) and the support turntable (15) are all rotationally connected to the outer wall of the top of the workbench (2), and a label roll (16) is arranged on the top of the support turntable (15), the free end of the label of the label roll (16) is once fitted to the outer wall of the guide roller (24) and the transition roller (18), and then fixed to the outer wall of the winding roller (17).

7. An automatic labelling device based on ring conveyance according to claim 6, characterized in that, The outer wall of the winding roller (17) is fixed to the end of the winding roller (17).

8. An automatic labelling device based on ring conveyance according to claim 5, characterized in that, The labeling assembly (13) comprises a labeling roller (19) and a support plate (22), the support plate (22) is fixed to the outer wall of the top of the workbench (2) by bolts, the outer wall of the labeling roller (19) is rotationally connected with a roller frame (20), the roller frame (20) is slidingly connected to one side of the support plate (22) through a "T" shaped guide rod (23), and the opposite side of the roller frame (20) and the support plate (22) is buckled with a spring (21).

9. An automatic labelling device based on ring conveyance according to claim 8, characterized in that, The outer wall of one side of the annular conveying mechanism (1) is fixed with a support plate two (34) through bolts, and the photoelectric gate two (35) is fixed at the position of the transition roller (18).

10. An automatic labelling device based on ring conveyance according to claim 6, characterized in that, The marking assembly (14) further comprises a stripping plate (26) and a rotating shaft (27), the stripping plate (26) is attached to the outer wall of the release paper layer outside the transition roller (18), the rotating shaft (27) is fixed to the top outer wall of the workbench (2), the stripping plate (26) is rotatably connected to the outer wall of the rotating shaft (27), and the torsional spring (33) is buckled between the stripping plate (26) and the rotating shaft (27).

Images