CN220518790U - Labeling device - Google Patents

Abstract

The utility model relates to the technical field of tobacco processing machinery design, in particular to a labeling device. The device comprises: the device comprises a base, a moving mechanism and an adsorption mechanism, wherein the base is provided with a guide rail; the moving mechanism comprises a first connecting plate, an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, one end of the first connecting plate is in sliding connection with the guide rail, the X-axis moving assembly is arranged on the first connecting plate in a sliding manner, the other end of the first connecting plate is in sliding connection with the Y-axis moving assembly, the Z-axis moving assembly is connected with the X-axis moving assembly, and the Z-axis moving assembly can move up and down; the adsorption mechanism is connected to the Z-axis moving assembly and moves along with the Z-axis moving assembly, and the labeling head of the adsorption mechanism adsorbs labels. Through the cooperation of X axle moving assembly, Y axle moving assembly and Z axle moving assembly, can make the labeling head realize the removal in X axle, Y axle and three direction of Z axle, accomplish the process that the label adsorbs and paste, replace manual work, improve work efficiency and label qualification rate.

Description

Labeling device

Technical Field

The utility model relates to the technical field of tobacco processing machinery design, in particular to a labeling device.

Background

At present, when a plurality of domestic cigarette production enterprises produce high-grade cigarette products, in order to prevent counterfeiting, the grade of the products is improved, an anti-counterfeiting label is usually attached to a cigarette small box, so that customers can inquire the authenticity of the products, and counterfeiters are prevented from counterfeiting.

The existing labeling mode generally adopts a mode of manually taking labels, manually aligning and manually labeling, and the speed of manually labeling is low, so that the working efficiency of a factory is low, and a large amount of manpower is required to be input into the factory to improve the working efficiency, so that the labor cost is increased; and the manual labeling is irregular, the appearance of the label is uneven, and the attractive appearance and the brand image are affected. Therefore, a labeling device is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a labeling device which can replace manual operation, improve working efficiency and improve labeling qualification rate.

To achieve the purpose, the utility model adopts the following technical scheme:

a labeling apparatus comprising:

the base is provided with a guide rail;

the moving mechanism comprises a first connecting plate, an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, one end of the first connecting plate is in sliding connection with the guide rail, the X-axis moving assembly is arranged on the first connecting plate and can slide along the length direction of the first connecting plate, the other end of the first connecting plate is connected with the Y-axis moving assembly, the first connecting plate can slide along the length direction of the Y-axis moving assembly, the Z-axis moving assembly is connected with the X-axis moving assembly, and the Z-axis moving assembly can move up and down;

the adsorption mechanism is connected to the Z-axis moving assembly and moves along with the Z-axis moving assembly, the adsorption mechanism comprises a labeling head, the labeling head is provided with a suction hole, and the labeling head can adsorb labels through the suction hole.

As a preferred technical scheme of the labeling device, the adsorption mechanism further comprises a second connecting plate and a motor, the second connecting plate is connected with the Z-axis moving assembly, the motor is arranged on one side of the second connecting plate, and an output shaft of the motor is connected with the labeling head.

As a preferred technical scheme of the labeling device, the adsorption mechanism further comprises a first mounting plate, a first sliding rail structure, a second mounting plate and a first spring, wherein the first mounting plate is connected with an output shaft of the motor, the first sliding rail structure is mounted on the side wall of the first mounting plate, a sliding block of the labeling head is slidably connected with the first sliding rail structure, the second mounting plate is vertically arranged at the top of the first mounting plate, one end of the first spring is arranged at the bottom of the second mounting plate, and the other end of the first spring is connected with the top of the labeling head.

As a preferable technical scheme of the labeling device, a limiting piece capable of preventing the labeling head from being separated is arranged at the bottom of the first sliding rail structure.

As a preferred technical scheme of the labeling device, the adsorption mechanism further comprises a guide rod, one end of the guide rod is arranged at the bottom of the second mounting plate, the labeling head is provided with a mounting hole, the other end of the guide rod is inserted into the mounting hole, the first spring is sleeved on the guide rod, and the guide rod can move in the mounting hole.

As a preferable technical scheme of the labeling device, the inner diameter of the first spring is the same as the diameter of the guide rod, the first spring can slide along the guide rod, and the diameter of the mounting hole is the same as the diameter of the guide rod.

As a preferred technical scheme of the labeling device, the labeling device further comprises a pressing mechanism and a connecting rod, the pressing mechanism comprises a third connecting plate, a third mounting plate and a pressing block, two ends of the connecting rod are respectively connected with the second connecting plate and the third connecting plate, the third mounting plate is arranged at the bottom of the third connecting plate, and the pressing block is arranged at the third mounting plate.

As a preferred technical scheme of the labeling device, the pressing mechanism further comprises a fourth mounting plate, a second sliding rail structure and a second spring, wherein the fourth mounting plate is arranged above the side wall of the third mounting plate, the second sliding rail structure is arranged on the side wall of the third mounting plate, the sliding block of the pressing block is in sliding connection with the second sliding rail structure, one end of the second spring is connected with the bottom plate of the fourth mounting plate, and the other end of the second spring is connected with the pressing block.

As a preferred technical scheme of the labeling device, the pressing mechanism further comprises a bearing and a connecting column, the bearing is sleeved on the connecting column, the connecting column is arranged at the bottom of the side wall of the pressing block, and the outer wall of the bearing is exposed out of the bottom surface of the pressing block.

As a preferred technical scheme of above-mentioned subsides mark device, subsides mark device still includes feeding mechanism, feeding mechanism includes stand, layer board and material loading module, the stand set up in the bottom of layer board, the material loading module set up in the top of layer board, the material loading module can carry the label, paste the mark head can remove to the material loading module adsorbs the label.

The utility model has the beneficial effects that: the labeling device provided by the utility model comprises a base, a moving mechanism and an adsorption mechanism, wherein the base is provided with a guide rail; the moving mechanism comprises a first connecting plate, an X-axis moving assembly, a Y-axis moving assembly and a Z-axis moving assembly, one end of the first connecting plate is in sliding connection with the guide rail, the X-axis moving assembly is arranged on the first connecting plate, the X-axis moving assembly can slide along the length direction of the first connecting plate, the other end of the first connecting plate is connected with the Y-axis moving assembly, the first connecting plate can slide along the length direction of the Y-axis moving assembly, the Z-axis moving assembly is connected with the X-axis moving assembly, and the Z-axis moving assembly can move up and down; the adsorption mechanism is connected to the Z-axis moving assembly and moves along with the Z-axis moving assembly, the adsorption mechanism comprises a labeling head, the labeling head is provided with a suction hole, and the labeling head can adsorb labels through the suction hole. Through the cooperation of X axle moving assembly, Y axle moving assembly and Z axle moving assembly, can make the labeling head realize the removal in X axle, Y axle and three direction of Z axle, accomplish the process that the label adsorbs and paste, replace manual work, improve work efficiency and label qualification rate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural diagram of a labeling device according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

fig. 3 is a partial enlarged view of B in fig. 2. .

In the figure:

1. a guide rail; 2. a first connection plate; 3. an X-axis moving assembly; 4. a Y-axis moving assembly; 5. a Z-axis movement assembly; 6. labeling the label; 7. a second connecting plate; 8. a motor; 9. a first mounting plate; 10. a second mounting plate; 11. a connecting rod; 12. a third connecting plate; 13. a third mounting plate; 14. briquetting; 15. a fourth mounting plate; 16. a second spring; 17. a bearing; 18. a shaft connecting plate; 19. a first connection block; 20. a second connection block; 21. a column; 22. a supporting plate; 23. a feeding module; 24. a first spring.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 3, the present utility model provides a labeling apparatus comprising: base, moving mechanism and adsorption mechanism.

Specifically, as shown in fig. 1 to 3, the base is provided with a guide rail 1; the moving mechanism comprises a first connecting plate 2, an X-axis moving assembly 3, a Y-axis moving assembly 4 and a Z-axis moving assembly 5, one end of the first connecting plate 2 is in sliding connection with the guide rail 1, the other end of the first connecting plate 2 is connected with the Y-axis moving assembly 4, the X-axis moving assembly 3 is arranged on the first connecting plate 2, the X-axis moving assembly 3 can slide along the length direction of the first connecting plate 2, the first connecting plate 2 can slide along the length direction of the Y-axis moving assembly 4, the first connecting plate 2 drives the X-axis moving assembly 3 to move along the length direction of the Y-axis moving assembly 4, the Z-axis moving assembly 5 is connected with the X-axis moving assembly 3, and the Z-axis moving assembly 5 can move up and down; the adsorption mechanism is arranged on the Z-axis moving assembly 5 and moves along with the Z-axis moving assembly 5, the adsorption mechanism comprises a labeling head 6, the labeling head 6 is provided with a suction hole, and the labeling head 6 can adsorb labels through the suction hole. Through the cooperation of X axle moving assembly 3, Y axle moving assembly 4 and Z axle moving assembly 5, can make subsides mark head 6 realize the removal in X axle, Y axle and three direction of Z axle, accomplish the process that the label adsorbs and paste, replace manual work, improve work efficiency and subsides mark qualification rate.

Preferably, as shown in fig. 1, the labeling device further comprises a feeding mechanism, the feeding mechanism is arranged on one side of the moving mechanism, the feeding mechanism comprises a stand column 21, a supporting plate 22 and a feeding module 23, the stand column 21 is arranged at the bottom of the supporting plate 22, the feeding module 23 is arranged at the top of the supporting plate 22, and the feeding module 23 can convey labels. Specifically, in this embodiment, in order to improve the labeling efficiency, four feeding modules 23 are arranged at intervals on the supporting plate 22, and four adsorption mechanisms are matched simultaneously, and the feeding modules 23 convey labels to the forefront end of the feeding modules 23, the labels are adsorbed by the adsorption surfaces of the adsorption mechanisms, and then the labels are conveyed to the pasting positions by the moving mechanisms, so that four labels can be pasted simultaneously by the four feeding modules 23 and the adsorption mechanisms, and the labeling efficiency is improved.

Of course, in other embodiments, the number of loading modules 23 and adsorption mechanisms may be determined according to factory production requirements.

Preferably, as shown in fig. 1 to 3, the adsorption mechanism further comprises a second connecting plate 7 and a motor 8, the second connecting plate 7 is connected with the Z-axis moving assembly 5, the motor 8 is arranged on one side of the second connecting plate 7, and an output shaft of the motor 8 is connected with the labeling head 6. Specifically, second connecting plate 7 and Z axle remove subassembly 5 pass through bolt structure fixed connection, and Z axle removes subassembly 5 and can drive second connecting plate 7 and reciprocate, and motor 8 is connected with the bottom of second connecting plate 7, and motor 8's output shaft is connected with paste mark head 6, and motor 8's extending direction is perpendicular with second connecting plate 7, along with motor 8's output shaft's rotation, can make paste mark head 6 rotation, can adapt to the different thing of waiting under placing the condition.

Preferably, the adsorption mechanism further comprises a first mounting plate 9, a first sliding rail structure, a second mounting plate 10 and a first spring 24, wherein the first mounting plate 9 is connected with an output shaft of the motor 8, the first sliding rail structure is vertically mounted on the side wall of the first mounting plate 9, a sliding block of the label head 6 is slidably connected with the first sliding rail structure, the second mounting plate 10 is vertically arranged at the top of the first mounting plate 9, the first mounting plate 9 and the second mounting plate 10 form an L-shaped structure, the first sliding rail structure is arranged on the side wall of the first mounting plate 9, the first sliding rail structure is vertically arranged with the second mounting plate 10, one end of the first spring 24 is arranged at the bottom of the second mounting plate 10, and the other end of the first spring 24 is connected with the top of the label head 6. Specifically, the rotation of the output shaft of the motor 8 can drive the first mounting plate 9, the first sliding rail structure, the second mounting plate 10 and the first spring 24 to integrally rotate, so that the universality of the labeling device is improved; when the label is pasted, in order to improve the pasting effect, the label pasting head 6 can be subjected to the resistance action of the object to be pasted, at this time, the label pasting head 6 can slide along the first sliding rail structure, the first spring 24 is compressed, the label pasting head 6 can also be subjected to the elastic force of the first spring 24, and the label is firmly pasted on the object to be pasted under the action of the elastic force of the first spring 24.

Preferably, since the labeling head 6 is always pushed by the first spring 24, in order to prevent the labeling head 6 from sliding out of the first sliding rail structure, a limiting piece is arranged at the bottom of the first sliding rail structure, so that the lowest position of the labeling head 6 is limited, and the labeling head 6 is prevented from sliding off.

Preferably, the adsorption mechanism further comprises a guide rod, one end of the guide rod is arranged at the bottom of the second mounting plate 10, the labeling head 6 is provided with a mounting hole, the other end of the guide rod is inserted into the mounting hole, and the first spring 24 is sleeved on the outer side of the guide rod. Specifically, guide bar one end is connected perpendicularly in the top of second mounting panel 10, pastes the top of mark head 6 and has the mounting hole, and in the other end of guide bar inserted the mounting hole, the outside of guide bar was located to first spring 24 cover, can make first spring 24 compress along the direction of guide bar like this, prevents that first spring 24 from taking place to crookedly at compression in-process, and then avoids influencing and pastes the mark effect.

Preferably, the first spring 24 has an inner diameter equal to the diameter of the guide bar, and the first spring 24 is slidable along the guide bar, the mounting hole has a diameter equal to the diameter of the guide bar, and the guide bar is capable of relative displacement with the label head 6. Specifically, the inner diameter of the first spring 24 is the same as the diameter of the guide rod, so that the inner diameter of the first spring 24 is attached to the outer wall of the guide rod, and the first spring 24 can slide along the guide rod, so that the first spring 24 can only compress along the length direction of the guide rod, the first spring 24 is prevented from being bent, the service life of the first spring 24 is prolonged, and the labeling effect is ensured; the diameter of mounting hole is the same with the diameter of guide bar, and the guide bar can produce relative displacement with pasting mark head 6, makes the outer wall of guide bar and the laminating of the inner wall of mounting hole, and the bottom of first spring 24 and the roof contact of pasting mark head 6 at this moment prevent that first spring 24 from getting into the mounting hole, avoid first spring 24 to influence the removal of guide bar in the mounting hole, guarantee to paste the mark effect.

Preferably, the adsorption mechanism further comprises a shaft connecting plate 18, a first connecting block 19 and a second connecting block 20, the shaft connecting plate 18 is fixedly connected with an output shaft of the motor 8, the first connecting block 19 is arranged on the top wall of the shaft connecting plate 18, the top wall of the first connecting block 19 is provided with a first U-shaped groove, the second connecting block 20 is arranged on the top wall of the first connecting block 19, the second connecting block 20 can slide along the first U-shaped groove, the side wall of the second connecting block 20 is provided with a second U-shaped groove, the first mounting plate 9 is arranged on the side wall of the second connecting block 20, the first mounting plate 9 can slide along the second U-shaped groove, and the first U-shaped groove is perpendicular to the direction of the second U-shaped groove. Through the setting in first U type groove and second U type groove, can make paste the four directions removal about the mark head 6, be convenient for adjust the position of pasting mark head 6.

Preferably, the adsorption surface of the labeling head 6 is of a rubber coating structure, the adsorption surface of the labeling head 6 is provided with a plurality of suction holes, the label can be firmly adsorbed, and meanwhile, the rubber coating structure can ensure that the adsorption surface of the labeling head 6 is fully contacted with the label, so that air leakage is prevented.

Preferably, the labeling device further comprises a pressing mechanism and a connecting rod 11, the pressing mechanism comprises a third connecting plate 12, a third mounting plate 13 and a pressing block 14, two ends of the connecting rod 11 are respectively connected with the second connecting plate 7 and the third connecting plate 12, the third mounting plate 13 is arranged at the bottom of the third connecting plate 12, and the pressing block 14 is arranged on the third mounting plate 13. Specifically, one end of connecting rod 11 is connected perpendicularly in second connecting plate 7, and the other end of connecting rod 11 is connected perpendicularly in third connecting plate 12, and second connecting plate 7 and the parallel relative setting of third connecting plate 12, third mounting panel 13 set up in the bottom of third connecting plate 12, and briquetting 14 sets up in third mounting panel 13, and the label is pasted after waiting to paste the surface of thing, and rethread briquetting 14 further presses the label, makes the label more firm, improves the labeling effect.

Preferably, the pressing mechanism further comprises a fourth mounting plate 15, a second sliding rail structure and a second spring 16, wherein the fourth mounting plate 15 is arranged above the side wall of the third mounting plate 13, the second sliding rail structure is arranged on the side wall of the third mounting plate 13, the sliding block of the pressing block 14 is slidably connected with the second sliding rail structure, one end of the second spring 16 is connected with the bottom plate of the fourth mounting plate 15, and the other end of the second spring 16 is connected with the pressing block 14. Through setting up fourth mounting panel 15, second slide rail structure and second spring 16, can play the cushioning effect to briquetting 14, when pressing the label, briquetting 14 can receive the resistance effect of object, at this moment, briquetting 14 can slide along second slide rail structure, and second spring 16 is compressed, and briquetting 14 also can receive the elasticity of second spring 16, makes the label more firmly paste on the object under the effect of second spring 16's elasticity.

Preferably, the pressing mechanism further comprises a bearing 17 and a connecting column, the bearing 17 is sleeved on the outer side of the connecting column, the connecting column is arranged at the bottom of the side wall of the pressing block 14, and the outer wall of the bearing 17 is exposed out of the bottom surface of the pressing block 14. Specifically, the bottom of briquetting 14 is connected with the spliced pole is perpendicular, and the outside of spliced pole is located to bearing 17 cover, and the outer wall of bearing 17 exposes in the bottom surface of briquetting 14 for in pressing process, the outer wall of bearing 17 can also roll the label when pressing down the label under moving mechanism's effect, makes the pasting of label more firm. In the present embodiment, the bearing 17 is a roller bearing, but in other embodiments, the bearing 17 may be a ball bearing.

The labeling device provided by the utility model can replace manual operation and reduce the labor cost; and a plurality of labels can be adhered at the same time, so that the working efficiency is improved; the consistency of labeling can be ensured by mechanical operation, and the labeling qualification rate is improved. The working process of the device is as follows:

1. the feeding module 23 conveys the label to the forefront end of the feeding module 23;

2. the X-axis moving assembly 3 is matched with the Y-axis moving assembly 4 to move the labeling head 6 to the position right above the label;

3. the initial position of the Z-axis moving assembly 5 is the highest position, the adsorption surface of the labeling head 6 faces downwards, the Z-axis moving assembly 5 drives the labeling head 6 to move downwards to be in contact with the label, and the label is adsorbed under the action of the vacuum assembly;

4. the X-axis moving assembly 3, the Y-axis moving assembly 4 and the Z-axis moving assembly 5 are matched to move the labeling head 6 and the label to the upper side or the lateral side close to the object to be labeled;

5. if the top surface of the object to be pasted needs to be pasted, the Z-axis moving assembly 5 positioned above the object to be pasted drives the label pasting head 6 and the label to move downwards, and the label is pasted on the top surface of the object to be pasted; if the side surface of the object to be pasted needs to be pasted, the motor 8 rotates the labeling head 6 and the label by 90 degrees, the labeling head 6 and the label positioned at the side of the object to be pasted move towards the object to be pasted under the drive of the X-axis moving assembly 3, and the label is pasted on the side surface of the object to be pasted;

6. after the label is pasted, the vacuum component is disconnected, the label pasting head 6 is separated from the label, and the rotating label pasting head 6 is reset;

7. the X-axis moving assembly 3, the Y-axis moving assembly 4 and the Z-axis moving assembly 5 are matched to move the pressing mechanism to the surface of the label for pressing, so that the adhesive strength of the label is improved;

8. after the pressing process is finished, the Z-axis moving assembly 5 is reset to the highest point, and the X-axis moving assembly 3 and the Y-axis moving assembly 4 are matched to move the labeling head 6 above the feeding module 23, so that the subsequent labeling work is prepared.

In this embodiment, the object to be pasted is a cigarette case, however, in other embodiments, the object to be pasted may be a square object with a regular shape, which is not limited thereto.

Furthermore, the foregoing description of the preferred embodiments and the principles of the utility model is provided herein. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. The labeling device, its characterized in that includes:

the base is provided with a guide rail (1);

the moving mechanism comprises a first connecting plate (2), an X-axis moving assembly (3), a Y-axis moving assembly (4) and a Z-axis moving assembly (5), one end of the first connecting plate (2) is in sliding connection with the guide rail (1), the X-axis moving assembly (3) is arranged on the first connecting plate (2), the X-axis moving assembly (3) can slide along the length direction of the first connecting plate (2), the other end of the first connecting plate (2) is connected with the Y-axis moving assembly (4), the first connecting plate (2) can slide along the length direction of the Y-axis moving assembly (4), the Z-axis moving assembly (5) is connected with the X-axis moving assembly (3), and the Z-axis moving assembly (5) can move up and down.

The adsorption mechanism is connected to the Z-axis moving assembly (5) and moves along with the Z-axis moving assembly (5), the adsorption mechanism comprises a label head (6), the label head (6) is provided with a suction hole, and the label head (6) can adsorb labels through the suction hole.

2. The labeling device according to claim 1, characterized in that the adsorption mechanism further comprises a second connecting plate (7) and a motor (8), the second connecting plate (7) is connected with the Z-axis moving assembly (5), the motor (8) is arranged on one side of the second connecting plate (7), and an output shaft of the motor (8) is connected with the labeling head (6).

3. The labeling device according to claim 2, characterized in that the adsorption mechanism further comprises a first mounting plate (9), a first sliding rail structure, a second mounting plate (10) and a first spring (24), wherein the first mounting plate (9) is connected with an output shaft of the motor (8), the first sliding rail structure is mounted on the side wall of the first mounting plate (9), the sliding block of the labeling head (6) is slidably connected with the first sliding rail structure, the second mounting plate (10) is vertically arranged at the top of the first mounting plate (9), one end of the first spring (24) is arranged at the bottom of the second mounting plate (10), and the other end of the first spring (24) is connected with the top of the labeling head (6).

4. A labelling device as claimed in claim 3, characterised in that the bottom of the first slide rail structure is provided with a stop member which can prevent the labelling head (6) from disengaging.

5. The labeling device according to claim 4, wherein the adsorption mechanism further comprises a guide rod, one end of the guide rod is arranged at the bottom of the second mounting plate (10), the labeling head (6) is provided with a mounting hole, the other end of the guide rod is inserted into the mounting hole, the first spring (24) is sleeved on the guide rod, and the guide rod can move in the mounting hole.

6. Labelling device according to claim 5, characterised in that the inner diameter of the first spring (24) is the same as the diameter of the guide bar and the first spring (24) is slidable along the guide bar, the diameter of the mounting hole being the same as the diameter of the guide bar.

7. The labeling device according to claim 2, further comprising a pressing mechanism and a connecting rod (11), wherein the pressing mechanism comprises a third connecting plate (12), a third mounting plate (13) and a pressing block (14), two ends of the connecting rod (11) are respectively connected with the second connecting plate (7) and the third connecting plate (12), the third mounting plate (13) is arranged at the bottom of the third connecting plate (12), and the pressing block (14) is arranged at the third mounting plate (13).

8. The labeling device according to claim 7, wherein the pressing mechanism further comprises a fourth mounting plate (15), a second sliding rail structure and a second spring (16), the fourth mounting plate (15) is arranged above the side wall of the third mounting plate (13), the second sliding rail structure is arranged on the side wall of the third mounting plate (13), the sliding block of the pressing block (14) is slidably connected with the second sliding rail structure, one end of the second spring (16) is connected with the bottom plate of the fourth mounting plate (15), and the other end of the second spring (16) is connected with the pressing block (14).

9. The labeling device of claim 8, wherein the pressing mechanism further comprises a bearing (17) and a connecting column, the bearing (17) is sleeved on the connecting column, the connecting column is arranged at the bottom of the side wall of the pressing block (14), and the outer wall of the bearing (17) is exposed out of the bottom surface of the pressing block (14).

10. The labeling device according to any one of claims 1-9, further comprising a feeding mechanism, wherein the feeding mechanism comprises a stand column (21), a supporting plate (22) and a feeding module (23), the stand column (21) is arranged at the bottom of the supporting plate (22), the feeding module (23) is arranged at the top of the supporting plate (22), the feeding module (23) can convey the label, and the labeling head (6) can move to the feeding module (23) to adsorb the label.