Automatic labeling equipment for black and white materials

Abstract

The invention discloses automatic labeling equipment for black and white materials, and aims to solve the problems that when current automatic labeling equipment for the black and white materials is used for labeling, the label is prone to wrinkling due to the fact that the label feeding speed and the container rotating speed are not synchronous, and particularly when a small-diameter barrel is subjected to curved surface labeling, the label is prone to wavy wrinkling; the device structurally comprises a labeling table, one side of the labeling table is fixedly connected with a supporting frame, one side of the supporting frame is provided with a through groove, the interior of the through groove is slidably connected with a moving block, and the center of the moving block is connected with a vibration mechanism through a limiting groove; one side of the moving block is fixedly connected with a connecting rod, and the other end of the connecting rod is fixedly connected to one side of a positioning plate. Labeling dislocation caused by label deviation is prevented, impact force in the vibration process can be absorbed through elastic deformation of the springs, hard collision between the moving plate and the limiting grooves is avoided, it is guaranteed that vibration action is stable, and the conveying requirements of black and white material labels with different thicknesses are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of labeling equipment, in particular to an automatic labeling equipment for black and white materials. BACKGROUND

[0002] In the chemical industry, paint industry and other industries, the labeling of black and white materials (mostly barrel-shaped packaged raw materials) is a key process to ensure product traceability and classification management. The current black and white material labeling equipment on the market still has many technical problems when facing the arc surface of barrel-shaped workpieces, label adhesion characteristics and batch production requirements.

[0003] In the process of implementing the application, the inventors found that at least the following problems in the prior art have not been solved. During use, the black and white material labels are mostly made of PE material. The traditional automatic labeling equipment for black and white materials is prone to wrinkles due to the asynchronous speed of label feeding and container rotation and uneven label tension, especially when labeling the curved surface of a small-diameter barrel. The label is prone to wavy wrinkles. Moreover, manual flattening is required, which is low in efficiency and affects the appearance. Therefore, a new technical solution is needed to solve this problem. SUMMARY

[0004] The purpose of the present application is to provide an automatic labeling equipment for black and white materials to solve the technical problem that the current automatic labeling equipment for black and white materials is prone to wrinkles due to the asynchronous speed of label feeding and container rotation and uneven label tension, especially when labeling the curved surface of a small-diameter barrel. The label is prone to wavy wrinkles. Moreover, manual flattening is required, which is low in efficiency and affects the appearance.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: an automatic labeling equipment for black and white materials, comprising a labeling table, a support frame is fixedly connected to one side of the labeling table, a through slot is formed in one side of the support frame, a moving block is slidably connected inside the through slot, and a vibration mechanism is connected to the center of the moving block through a limiting slot;

[0006] One side of the moving block is fixedly connected with a connecting rod, the other end of the connecting rod is fixedly connected to one side of a positioning plate, the top end of the positioning plate is fixedly connected to the output end of an electric push rod, and the mounting end of the electric push rod is fixedly connected to the top end of the support frame;

[0007] The other side of the moving block is fixedly connected with two mounting plates, a discharging roller and a collecting roller are connected between the two mounting plates through a limiting bolt, and a linkage mechanism is installed at one end of the discharging roller;

[0008] The bottom of the labeling table is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected at the center of a driving gear, the toothed end of the driving gear is engaged with the toothed end of a driven gear, the center of the driven gear is fixedly connected at one end of a driven shaft, the other end of the driven shaft is rotatably connected in the inside of the labeling table through a connecting bearing and extends to the upper surface of the labeling table and is fixedly connected with the bottom of the carrier disc.

[0009] As a preferred embodiment of the present application, the vibration mechanism comprises a moving plate, one end of the moving plate is rotatably connected with a guide roller, the other end of the moving plate slides through the inside of a limiting slot and is inserted into the inside of a sleeve plate.

[0010] As a preferred embodiment of the present application, the inside of the sleeve plate is installed with a guide column, one end of the guide column is fixedly connected at the other end of the moving plate, the other end of the guide column movably penetrates the inside of the other end of the sleeve plate, the outside of the guide column is sleeved with a spring, one end of the spring abuts against the surface of the moving plate, the other end of the spring abuts against the inner wall of the sleeve plate.

[0011] As a preferred embodiment of the present application, the bottom of the sleeve plate is fixedly connected at one end of a connecting plate, the other end of the connecting plate is rotatably connected at one end of a driving plate, the other end of the driving plate is rotatably connected at the edge of the other side of the driven gear.

[0012] As a preferred embodiment of the present application, one end of the limiting bolt movably connects in the inside of the mounting plate, the other end of the limiting bolt is threadedly connected in the inside of the shaft of the feeding roller and the collecting roller, the two limiting bolts on the feeding roller and the collecting roller are opposite in the thread direction.

[0013] As a preferred embodiment of the present application, the linkage mechanism comprises a linkage shaft, one end of the linkage shaft is fixedly connected on one limiting bolt of the collecting roller, the other end of the linkage shaft is fixedly connected at the center of a first pulley.

[0014] As a preferred embodiment of the present application, the first pulley is sleeved at one end of a transmission belt, the other end of the transmission belt is sleeved in the inside of a second pulley, the inner ring of the second pulley is fixedly connected on the outer surface of the driven shaft, the position of the first pulley is in the same horizontal plane with the second pulley.

[0015] As a preferred embodiment of the present application, the outer ring of the connecting bearing is fixedly connected in the inside of the labeling table, the inner ring of the connecting bearing is fixedly connected on the outer surface of the driven shaft.

[0016] As a preferred embodiment of the present application, the center of the positioning plate is in the same center line with the center of the carrier disc.

[0017] As a preferred embodiment of the present application, the limiting groove is through the center of the moving block, and the size of the moving plate matches the size of the limiting groove.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、When the driving plate drives the sleeve plate to swing, the sleeve plate drives the moving plate to reciprocate along the limiting groove through the guide column and the spring, so that the guide roller produces slight vibration, which can avoid the label from being adhered due to static electricity or adhesion in the conveying process, and ensure the label to be conveyed flatly and continuously; at the same time, the guide roller plays a guiding role on the label, limits the conveying direction of the label, prevents the label from deviating to cause misalignment of labeling, and the elastic deformation of the spring can absorb the impact force in the vibration process, avoid the hard collision between the moving plate and the limiting groove, ensure the vibration action to be stable, and adapt to the conveying requirements of labels of different thicknesses of black and white materials.

[0020] 2、The present application starts the electric push rod, the output end of which can drive the positioning plate to lift, and the connecting rod is synchronously driven to drive the moving block to slide along the through slot of the support frame, so as to adjust the height of the label conveying components such as the guide roller, the feeding roller and the collecting roller; the adjusting structure can adjust the height of the guide roller according to the height of the black and white material barrel, so as to ensure that the guide roller is always located at the middle position of the black and white material barrel, and ensure the consistency of the labeling pressure and the fitting effect.

[0021] 3、The feeding roller is used for placing a label roll, and the collecting roller is used for recycling label base paper, and the two are synchronously driven through the linkage mechanism; in the linkage mechanism, the limiting bolt of the collecting roller drives the linkage shaft to rotate, the linkage shaft drives the first pulley to rotate, the first pulley drives the second pulley to synchronously rotate through the transmission belt, and the second pulley further transmits power to the subsequent structure through the driving shaft; since the first pulley and the second pulley are located on the same horizontal plane, the transmission belt can keep stable transmission, avoid belt deviation or slipping, ensure the matching of the unwinding speed of the feeding roller, the winding speed of the collecting roller and the rotating speed of the carrier disc, prevent the label from being relaxed or wrinkled due to too fast unwinding, or the label from being damaged due to too fast winding, and realize stable tensioning of label conveying.

[0022] 4、The application drives the driving gear through the output end of the motor, the driving gear drives the driven gear to rotate through the tooth engagement, the driven gear drives the carrier disc to rotate through the driving shaft on one side, the carrier disc is used for placing the black and white material barrels, the carrier disc rotation can realize multi-position labeling of the black and white material barrels, and manual adjustment of the angle of the black and white material barrels is not needed, so that the labeling efficiency is improved; on the other side, the driven gear drives the sleeve plate to swing through the driving plate on the other side edge, and then drives the vibration mechanism and the guide label roller to act, so that the power linkage of the carrier disc rotation and the label vibration conveying is realized, the labeling action is matched with the rotation rhythm of the black and white material barrels, labeling misplacement is avoided, the driving shaft is rotatably connected in the labeling table through the connecting bearing, stable support is provided for the driving shaft, the stability of the carrier disc rotation and the label conveying is ensured in the power transmission process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, which is to be read in conjunction with the accompanying drawings:

[0024] Figure 1 It is a structural schematic view of the application;

[0025] Figure 2 It is a back view schematic view of the application;

[0026] Figure 3 It is a bottom view of the application;

[0027] Figure 4 It is a linkage mechanism structural schematic view of the application;

[0028] Figure 5 It is a sleeve plate sectional view of the application;

[0029] In the figure: 1, labeling table; 11, support frame; 12, through slot; 13, moving block; 14, limiting groove; 15, connecting rod; 16, positioning plate; 17, electric push rod; 18, mounting plate; 19, limiting bolt;

[0030] 2, material feeding roller; 21, material collecting roller; 22, driving motor; 23, driving gear; 24, driven gear; 25, driving shaft; 26, connecting bearing; 27, carrier disc; 28, moving plate; 29, guide label roller;

[0031] 3, sleeve plate; 31, guide column; 32, spring; 33, connecting plate; 34, driving plate; 35, linkage shaft; 36, first belt pulley; 37, transmission belt; 38, second belt pulley. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] Embodiment 1: a black and white material automatic labeling equipment, see Figures 1 to 5 , including labeling table 1, one side of the labeling table 1 is fixedly connected with support frame 11, one side of the support frame 11 is provided with through slot 12, the inside of the through slot 12 is slidably connected with moving block 13, the center of the moving block 13 is connected with vibration mechanism through limiting slot 14, the vibration mechanism includes moving plate 28, one end of the moving plate 28 is rotatably connected with guide label roller 29, the other end of the moving plate 28 slides through the inside of the limiting slot 14 and is inserted into the inside of the sleeve plate 3, the inside of the sleeve plate 3 is installed with guide column 31, one end of the guide column 31 is fixedly connected with the other end of the moving plate 28, the other end of the guide column 31 movably penetrates the inside of the other end of the sleeve plate 3, the outside of the guide column 31 is sleeved with spring 32, one end of the spring 32 abuts against the surface of the moving plate 28, the other end of the spring 32 abuts against the inner wall of the sleeve plate 3, the bottom of the sleeve plate 3 is fixedly connected with one end of connecting plate 33, the other end of the connecting plate 33 is rotatably connected with one end of driving plate 34, the other end of the driving plate 34 is rotatably connected with the edge of the other side of the driven gear 24;

[0035] The limiting slot 14 at the center of the moving block 13 provides installation and movement space for the vibration mechanism, one end of the moving plate 28 of the vibration mechanism is rotatably connected with the guide label roller 29, and the other end is slidably connected in the inside of the sleeve plate 3 through the guide column 31, the spring 32 outside the guide column 31 forms an elastic buffer structure, when the sleeve plate 3 is swung by the driving plate 34, the sleeve plate 3 pushes the moving plate 28 to reciprocate along the limiting slot 14 through the guide column 31 and the spring 32, so that the guide label roller 29 produces slight vibration, which can avoid label adhesion due to static electricity or adhesion in the conveying process, ensure the smooth and continuous conveying of the label; at the same time, the guide label roller 29 plays a guiding role on the label, limits the conveying direction of the label, prevents the label from deviating to cause labeling misalignment, and the elastic deformation of the spring 32 can absorb the impact force in the vibration process, avoid hard collision between the moving plate 28 and the limiting slot 14, ensure smooth vibration action, and adapt to the conveying needs of labels of different thicknesses of black and white materials.

[0036] One side of the moving block 13 is fixedly connected with connecting rod 15, the other end of the connecting rod 15 is fixedly connected with one side of positioning plate 16, the top end of the positioning plate 16 is fixedly connected with the output end of the electric push rod 17 in the middle, and the mounting end of the electric push rod 17 is fixedly connected with the top end of the support frame 11;

[0037] The moving block 13 is fixed on one side by the connecting rod 15 and the positioning plate 16, the top end of the positioning plate 16 is connected with the output end of the electric push rod 17, the installation end of the electric push rod 17 is fixed on the top end of the support frame 11, the electric push rod 17 is started, the output end of the electric push rod 17 can drive the positioning plate 16 to rise and fall, the connecting rod 15 is synchronously driven to drive the moving block 13 to slide along the through slot 12 of the support frame 11, and the height of the label conveying components such as the guide roller 29, the feeding roller 2 and the collecting roller 21 is adjusted, the adjusting structure can adjust the height of the guide roller 29 according to the height of the black and white material barrels, and ensures that the guide roller 29 is always located at the middle position of the black and white material barrels, so that the consistency of the labeling pressure and the labeling effect is ensured.

[0038] The other side of the moving block 13 is fixedly connected with two mounting plates 18, the feeding roller 2 and the collecting roller 21 are connected between the two mounting plates 18 through the limiting bolt 19, one end of the feeding roller 2 is provided with a linkage mechanism, the linkage mechanism comprises a linkage shaft 35, one end of the linkage shaft 35 is fixedly connected to one limiting bolt 19 of the collecting roller 21, the other end of the linkage shaft 35 is fixedly connected to the center of a first pulley 36, the first pulley 36 is sleeved on one end of a transmission belt 37, the other end of the transmission belt 37 is sleeved in a second pulley 38, the inner ring of the second pulley 38 is fixedly connected to the outer surface of the driving shaft 25, and the positions of the first pulley 36 and the second pulley 38 are in the same horizontal plane.

[0039] The feeding roller 2 is used for placing a label roll, and the collecting roller 21 is used for recycling label base paper, and the two are synchronously driven through the linkage mechanism, in the linkage mechanism, the limiting bolt 19 of the collecting roller 21 drives the linkage shaft 35 to rotate, the linkage shaft 35 drives the first pulley 36 to rotate, the first pulley 36 drives the second pulley 38 to synchronously rotate through the transmission belt 37, and the second pulley 38 transmits power to subsequent structures through the driving shaft 25, since the first pulley 36 and the second pulley 38 are in the same horizontal plane, the transmission belt 37 can keep stable transmission, the belt deviation or slip is avoided, the unwinding speed of the feeding roller 2, the winding speed of the collecting roller 21 and the rotating speed of the carrier disc 27 are matched, label relaxation and wrinkles caused by too fast unwinding are prevented, label damage caused by too fast winding is prevented, and stable tension of label conveying is realized.

[0040] The bottom of the labeling table 1 is fixedly connected with a driving motor 22, the output end of the driving motor 22 is fixedly connected to the center of a driving gear 23, the toothed end of the driving gear 23 is engaged with the toothed end of a driven gear 24, the center of the driven gear 24 is fixedly connected to one end of a driving shaft 25, the other end of the driving shaft 25 is rotatably connected to the inside of the labeling table 1 through a connecting bearing 26 and extends to the bottom of the carrier disc 27 fixedly connected to the upper surface of the labeling table 1.

[0041] The driving motor 22 at the bottom of the labeling table 1 provides the core power for the equipment, and the output end drives the driving gear 23 to rotate. The driving gear 23 drives the driven gear 24 to rotate through the tooth engagement. The driven gear 24 drives the carrier disc 27 to rotate through the driving shaft 25 on one side, and the carrier disc 27 is used for placing black and white material barrels. The carrier disc 27 rotates to realize multi-position labeling of the black and white material barrels, without manual adjustment of the angle of the black and white material barrels, thereby improving the labeling efficiency. On the other side, the driven gear 24 drives the sleeve plate 3 to swing through the driving plate 34, and then drives the vibration mechanism and the guide label roller 29 to act, realizing the power linkage of the rotation of the carrier disc 27 and the vibration and conveying of the label, ensuring that the labeling action matches the rotation rhythm of the black and white material barrels, avoiding labeling misplacement, and the driving shaft 25 is rotatably connected in the inside of the labeling table 1 through the connecting bearing 26, providing stable support for the driving shaft 25, ensuring that there is no shaking in the power transmission process, and ensuring the stability of the rotation of the carrier disc 27 and the conveying of the label.

[0042] Specifically, referring to Figure 1 and Figure 3 , one end of the limiting bolt 19 is movably connected in the inside of the mounting plate 18, and the other end of the limiting bolt 19 is threadedly connected in the shafts of the material feeding roller 2 and the material collecting roller 21. The two limiting bolts 19 on the material feeding roller 2 and the material collecting roller 21 have opposite threaded directions.

[0043] The limiting bolt 19 is movably connected to the mounting plate 18 at one end and threadedly connected to the shaft ends of the material feeding roller 2 and the material collecting roller 21 at the other end, and the threaded directions of the limiting bolts 19 of the two are opposite. When the limiting bolt 19 is rotated, the material feeding roller 2 and the material collecting roller 21 will move in opposite directions due to the opposite threaded directions. For example, when the limiting bolt 19 is rotated clockwise, the material feeding roller 2 moves outward and the material collecting roller 21 moves inward, or vice versa. This structure can adjust the distance between the two rollers and control the tension of the label. When the distance increases, the tension of the label increases to prevent the label from relaxing. When the distance decreases, the tension decreases to prevent the label from being stretched too much. At the same time, the threaded connection of the limiting bolt 19 can lock the positions of the two rollers to ensure that the tension of the label remains stable after adjustment, and adapt to the conveying needs of black and white material labels of different materials and widths.

[0044] Further, referring to Figure 3 and Figure 4 , the outer ring of the connecting bearing 26 is fixedly connected to the inside of the labeling table 1, and the inner ring of the connecting bearing 26 is fixedly connected to the outer surface of the driving shaft 25.

[0045] The outer ring of the connecting bearing 26 is fixed inside the labeling table 1, and the inner ring is fixed outside the driving shaft 25, forming a support structure with the outer ring fixed and the inner ring rotating. On the one hand, it provides radial and axial support for the driving shaft 25, avoiding bending and shaking of the driving shaft 25 during power transmission due to its own weight or stress, ensuring stable rotation of the driving shaft 25. On the other hand, the rolling friction of the bearing can greatly reduce the frictional resistance between the driving shaft 25 and the labeling table 1, reduce the energy consumption of the driving motor 22, reduce component wear, prolong the service life of the driving shaft 25 and the labeling table 1, and at the same time ensure the uniform rotation speed of the carrier disc 27, avoiding label position deviation caused by fluctuation of frictional resistance.

[0046] Further, referring to Figure 1 , the center of the positioning plate 16 is on the same center line as the center of the carrier disc 27;

[0047] The center of the positioning plate 16 is on the same center line as the center of the carrier disc 27. This design ensures that the label conveying components (label guide rollers 29, material feeding rollers 2, etc.) driven by the positioning plate 16 are centered with the black and white material barrels on the carrier disc 27. When the label is conveyed to the surface of the black and white material barrel by the label guide roller 29, the center alignment ensures that the label is attached to the pre-set center position of the black and white material barrel, avoiding label deviation to one side (such as left or right) due to component deviation. Especially for circular and symmetrical black and white material barrels, it can significantly improve the label position accuracy, ensure the appearance consistency of the black and white material barrels after labeling, and reduce the scrap rate.

[0048] It is worth noting that, referring to Figure 1 , the limiting groove 14 passes through the center of the moving block 13, and the size of the moving plate 28 is consistent with the size of the limiting groove 14;

[0049] The limiting groove 14 passes through the center of the moving block 13, and the size of the moving plate 28 is consistent with the size of the limiting groove 14, so that the moving plate 28 can slide accurately along the limiting groove 14 without excess gap. This structure provides strict motion guidance for the moving plate 28, limiting the moving plate 28 to reciprocate only in the direction of the limiting groove 14, avoiding lateral deviation or inclination of the moving plate 28 during vibration, ensuring that the vibration direction of the label guide roller 29 is consistent with the label conveying direction, preventing the label conveying path from changing and the label from being misaligned due to deviation of the moving plate 28. At the same time, the closely fitted structure can reduce the collision and wear between the moving plate 28 and the limiting groove 14, ensuring long-term stable operation of the vibration mechanism.

[0050] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments shown and described herein. Rather, this application is capable of operating within a further range of conditions and environments than those specifically described herein, and further modifications can be made without departing from the spirit or scope of the application. Accordingly, the description is to be construed as illustrative only and not restrictive of the broad disclosure or application of the application. The specification and drawings are, accordingly, to be regarded simply as illustrative and with the scope of the application being measured by the appended claims, and not with the specification. No admission is made that any reference constitutes prior art. It is my intent, therefore, to be limited only as appears in the following claims.

[0051] Furthermore, it should be understood that although the description above relates to embodiments, not every embodiment contains only one independent technical solution, and the description above is only for the sake of clarity, and those skilled in the art should understand the description as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A black and white material automatic labeling apparatus comprising a labeling station (1), characterized in that: One side of the labeling table (1) is fixedly connected with a support frame (11), one side of the support frame (11) is provided with a through slot (12), the inside of the through slot (12) is slidably connected with a moving block (13), the center of the moving block (13) is connected with a vibration mechanism through a limiting slot (14); One side of the moving block (13) is fixedly connected with a connecting rod (15), the other end of the connecting rod (15) is fixedly connected with a positioning plate (16), the top end of the positioning plate (16) is fixedly connected with the output end of an electric push rod (17), the mounting end of the electric push rod (17) is fixedly connected with the top end of the support frame (11); The other side of the moving block (13) is fixedly connected with two mounting plates (18), the two mounting plates (18) are connected with a feeding roller (2) and a collecting roller (21) through a limiting bolt (19), one end of the feeding roller (2) is provided with a linkage mechanism. The bottom of the labeling table (1) is fixedly connected with a driving motor (22), the output end of the driving motor (22) is fixedly connected with the center of a driving gear (23), the toothed end of the driving gear (23) is engaged with the toothed end of a driven gear (24), the center of the driven gear (24) is fixedly connected with one end of a driven shaft (25), the other end of the driven shaft (25) is rotatably connected with the inside of the labeling table (1) through a connecting bearing (26) and extends to the upper surface of the labeling table (1) and is fixedly connected with a carrier disc (27) at the bottom.

2. The black and white material automatic labeling apparatus according to claim 1, characterized in that: The vibration mechanism comprises a moving plate (28), one end of the moving plate (28) is rotatably connected with a guide roller (29), the other end of the moving plate (28) slides through the inside of the limiting slot (14) and is inserted into the inside of a sleeve plate (3).

3. The black and white material automatic labeling apparatus according to claim 2, characterized in that: The inside of the sleeve plate (3) is provided with a guide column (31), one end of the guide column (31) is fixedly connected with the other end of the moving plate (28), the other end of the guide column (31) movably penetrates the inside of the other end of the sleeve plate (3), the outside of the guide column (31) is sleeved with a spring (32), one end of the spring (32) abuts against the surface of the moving plate (28), the other end of the spring (32) abuts against the inner wall of the sleeve plate (3).

4. The black and white material automatic labeling apparatus according to claim 3, characterized in that: The bottom of the sleeve plate (3) is fixedly connected with one end of a connecting plate (33), the other end of the connecting plate (33) is rotatably connected with one end of a driving plate (34), the other end of the driving plate (34) is rotatably connected with the edge of the other side of the driven gear (24).

5. The black and white material automatic labeling apparatus according to claim 1, characterized in that: One end of the limiting bolt (19) is movably connected with the inside of the mounting plate (18), the other end of the limiting bolt (19) is threadedly connected with the inside of the shaft of the feeding roller (2) and the collecting roller (21), the two limiting bolts (19) on the feeding roller (2) and the collecting roller (21) are oppositely threaded.

6. The black and white material automatic labeling apparatus according to claim 1, characterized in that: The linkage mechanism comprises a linkage shaft (35), one end of the linkage shaft (35) is fixedly connected with one limiting bolt (19) of the collecting roller (21), the other end of the linkage shaft (35) is fixedly connected with the center of a first belt pulley (36).

7. The black and white material automatic labeling apparatus according to claim 6, characterized in that: The first belt pulley (36) is sleeved at one end of a transmission belt (37), the other end of the transmission belt (37) is sleeved in the second belt pulley (38), the inner ring of the second belt pulley (38) is fixedly connected to the outer surface of the driving shaft (25), and the position of the first belt pulley (36) is in the same horizontal plane as the second belt pulley (38).

8. The black and white material automatic labeling apparatus according to claim 1, characterized in that: The outer ring of the connecting bearing (26) is fixedly connected to the inside of the labeling table (1), and the inner ring of the connecting bearing (26) is fixedly connected to the outer surface of the driving shaft (25).

9. The black and white material automatic labeling apparatus according to claim 1, characterized in that: The center of the positioning plate (16) is on the same center line as the center of the carrier disc (27).

10. The black and white material automatic labeling apparatus according to claim 2, characterized in that: The limiting groove (14) penetrates the center of the moving block (13), and the size of the moving plate (28) is consistent with the size of the limiting groove (14).

Images