Rolling and clinging type automatic printing and labeling machine and rolling and clinging method

Abstract

The invention relates to the related technical field of labeling machines, in particular to a rolling and attaching type automatic printing labeling machine and a rolling and attaching method.The rolling and attaching type automatic printing labeling machine comprises a machine case, a rolling module is arranged on the side portion of the machine case, and the rolling module comprises a cross arm fixed to the side portion of the machine case; the two movable seats are movably arranged on the cross arm and can move oppositely in the length direction of the cross arm, a first compression roller and a second compression roller which are hollow are arranged on the two movable seats through a set of power mechanisms respectively, and the first compression roller and the second compression roller can be driven by the power mechanisms to execute deflection actions; through the switching of a V-shaped structure and a linear structure of the rolling module, the phenomenon that the part, not attached to the goods, of the label is wrinkled due to a linear rolling means is avoided, and the product quality is improved in the subsequent assembly production. A sensing component of an automatic production line cannot smoothly scan bar codes of labels on goods, so that analysis errors are caused, and the production efficiency is seriously influenced.

Description

Technical Field

[0001] This invention relates to the technical field of labeling machines, specifically to an automatic printing and labeling machine and a roller pressing and pressing method. Background Technology

[0002] In today's automotive manufacturing industry, the production process is extremely complex and sophisticated. A car consists of tens of thousands of parts, which undergo numerous processes during production. Many of these parts require corresponding labels for identification and subsequent assembly. For example, in car production, the injection-molded parts used to mount the horn on the chassis need to be labeled after production to ensure accurate identification and use of the part in subsequent production stages.

[0003] To achieve efficient and accurate labeling, labeling machines were developed. The basic principle of a labeling machine is to use a mechanical device to remove the label from the label feeding mechanism and affix it to the designated location on the product. In practice, although the labeling is initially applied after the product passes through the labeling module on the conveyor belt, it often cannot guarantee that the label adheres perfectly to the product. To ensure the label is firmly attached to the product surface, the product then passes through a pressure roller, which presses the label to ensure a tighter bond between the label and the product surface.

[0004] Currently, label rolling is typically performed using a long roller with its axis perpendicular to the direction of product movement. However, this linear rolling method can cause wrinkles in areas where the label is not properly attached to the product. Furthermore, after prolonged use, dust and other debris may accumulate on the roller's surface. This dust and debris can scratch the label during subsequent rolling processes. When these problems occur in the barcode area of ​​the label, the sensors on the automated production line will be unable to scan the barcodes accurately during assembly, leading to analysis errors and severely impacting production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic printing and labeling machine and a roller pressing and pressing method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic printing and labeling machine using a roller pressing and bonding method includes a chassis, with a roller pressing module located on the side of the chassis. The roller pressing module includes: A cross arm fixed to the side of the chassis; Two movable seats are mounted on the horizontal arm and can move in opposite directions along the length of the horizontal arm. The two movable seats are equipped with a hollow first pressure roller and a second pressure roller respectively through a set of power mechanism. The first pressure roller and the second pressure roller can be driven by the power mechanism to perform a deflection action so that the first pressure roller and the second pressure roller form a "V" shape structure and a "I" shape structure respectively. When the first and second pressure rollers form a "V" shape, and the labeled goods pass through the "V" shape along the goods conveying direction, the pressure applying mechanism on the cross arm can cause the first and second pressure rollers to apply pressure to the label on the goods. When the first and second pressure rollers form a "I" shape, the air guide structure at the end of the second pressure roller away from the first pressure roller can blow air axially into the "I" shape.

[0007] As a further aspect of the present invention: the power mechanism includes a vertical tube disposed on the movable seat, the vertical tube being connected to the end of the first pressure roller, and the vertical tube being driven by a gear assembly disposed on the movable seat to drive the first pressure roller to perform a deflection action; the vertical tube is also connected to the pressure applying mechanism, and the pressure applying mechanism is capable of driving the vertical tube to move vertically relative to the movable seat.

[0008] As a further embodiment of the present invention: the meshing assembly includes a drive tube rotatably mounted on the movable seat, the drive tube being slidably fitted with the upright tube, and a transmission structure being provided between the two; the meshing assembly also includes a drive motor mounted on the movable seat, a first gear fixed on the output shaft of the drive motor, and a second gear fixed on the drive tube, the first gear meshing with the second gear.

[0009] As a further embodiment of the present invention: the conductive structure includes two strip-shaped protrusions on the outer wall of the riser and two strip-shaped grooves on the inner wall of the drive pipe, the strip-shaped grooves being adapted to the strip-shaped protrusions, and both being parallel to the central axis of the drive pipe and the riser.

[0010] As a further embodiment of the present invention: the pressure applying mechanism includes a pneumatic component disposed on the cross arm, the pneumatic component is connected to two sets of elastic transmission structures symmetrically disposed on the cross arm, and each of the two sets of elastic transmission structures is connected to the two vertical pipes respectively through a set of telescopic arm groups.

[0011] As a further embodiment of the present invention: the pneumatic assembly includes two cylinders fixed on the cross arm and a drive arm fixedly connected to the movable ends of the two cylinders, with the two ends of the drive arm respectively connected to two sets of the elastic transmission structure.

[0012] As a further embodiment of the present invention: the elastic transmission structure includes a guide arm slidably disposed on the cross arm, the guide arm having an assembly cavity, and a slider fixedly connected to the drive arm slidably disposed in the assembly cavity; The guide arm is connected to the telescopic arm assembly, and a guide post is fixed inside the assembly cavity. The slider is slidably connected to the guide post. A spring is also sleeved on the outer periphery of the guide post. One end of the spring is connected to the inner wall of the assembly cavity, and the other end is connected to the slider.

[0013] As a further embodiment of the present invention: the telescopic arm assembly includes a first connecting arm fixedly installed on the side of the guide arm away from the drive arm and a second connecting arm slidably fitted with the first connecting arm, and the end of the second connecting arm away from the guide arm is rotatably connected to the riser.

[0014] As a further embodiment of the present invention: the air guiding structure includes a frustum located at the end of the second pressure roller away from the first pressure roller. The frustum is provided with a plurality of air passages communicating with the second pressure roller at equal intervals along its circumference. The second pressure roller is also provided with a conical protrusion and an annular portion. A slit is formed between the conical protrusion and the annular portion to penetrate the air passages. The riser connected to the first pressure roller is also connected to an air pump located in the housing via a flexible hose.

[0015] An automatic printing and labeling machine provides a method for roller pressing and affixing labels, wherein during roller pressing, the first pressure roller and the second pressure roller form a "V" shape structure, and the pressure application mechanism provides pressure to the first pressure roller and the second pressure roller, so that the first pressure roller and the second pressure roller act on the surface of the goods, causing the label to stretch outward. When the first and second pressure rollers form an "I" shape, air is pumped into the first and second pressure rollers. The gas passes through the air guide structure and forms multiple axial airflow jets on the outer periphery of the "I" shape, blowing away dust and foreign objects on the outer walls of the first and second pressure rollers.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention incorporates a first and a second pressure roller capable of oscillating motion. These rollers can form a "V" shape and an "I" shape, respectively. During the rolling process, the "V" shape helps to stretch the label outwards, effectively promoting a more seamless fit between the label and the product surface. This avoids the wrinkles that occur in areas where the label doesn't adhere properly, which can result from linear rolling. In such cases, the automated production line's sensors may be unable to scan the barcode on the label during assembly, leading to errors and significantly impacting production efficiency. When the first and second pressure rollers form an "I" shape, air is pumped into the cylindrical cavity formed by the first and second pressure rollers through a hose and a riser. The gas is evenly divided along the circumference by a conical protrusion, enters the air passage through the slit between the conical protrusion and the annular part, and is finally blown out along the axial direction of the "I" shape. Thus, multiple axial airflow jets are formed on the outer periphery of the "I" shape, which can effectively remove dust and foreign objects on the outer walls of the first and second pressure rollers, avoid scratching the labels during subsequent rolling, and ensure that the label information can be effectively identified in subsequent processing, thus providing an effective guarantee for production efficiency.

[0017] This invention provides an integrated solution in which the roller pressing mechanism itself can be reconfigured from a "V-shaped structure" to a "straight line structure" to achieve full label adhesion and efficient self-cleaning function, thereby preventing the sensing components from failing to scan the product labels smoothly, thus improving the production efficiency of the automated production line. Attached Figure Description

[0018] Figure 1 This is an isometric view of one embodiment of a roller-pressing automatic printing and labeling machine.

[0019] Figure 2 This is a schematic diagram of one embodiment of a roller-pressing automatic printing and labeling machine.

[0020] Figure 3 This is a structural schematic diagram from another angle of one embodiment of a roller-pressing automatic printing and labeling machine.

[0021] Figure 4 This is a structural schematic diagram from another angle of one embodiment of a roller-pressing automatic printing and labeling machine.

[0022] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0023] Figure 6 This is a schematic diagram of the roller pressing module in one embodiment of a roller pressing automatic printing and labeling machine.

[0024] Figure 7 This is a schematic diagram of the roller pressing module from another angle in one embodiment of a roller pressing and bonding automatic printing and labeling machine.

[0025] Figure 8 This is an exploded view of the roller pressing module in one embodiment of a roller pressing automatic printing and labeling machine.

[0026] Figure 9 for Figure 8 A structural diagram from another angle.

[0027] Figure 10 for Figure 8 Enlarged view of the structure at position B

[0028] Figure 11 Partial cross-sectional view of the "one" - shaped structure in an embodiment of a roll - pressing and close - fitting automatic printing and labeling machine

[0029] Figure 12 is Figure 11 Enlarged view of the structure at position C

[0030] In the figure: 1. Chassis; 2. First winding roller; 3. Second winding roller; 4. Printing module; 5. Placing table; 6. Third winding roller; 7. Cross - arm; 8. Movable seat; 9. First pressing roller; 10. Second pressing roller; 1001. Round table; 1002. Conical protrusion; 1003. Annular part; 1004. Air channel; 11. Driving tube; 1101. Strip - shaped groove; 12. Standpipe; 1201. Strip - shaped protrusion; 1202. Hose; 13. Driving motor; 14. First gear; 15. Second gear; 16. Guide arm; 17. Guide column; 18. Spring; 19. Slide block; 20. First connecting arm; 21. Second connecting arm; 22. Cylinder; 23. Driving arm Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention

[0032] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, and it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation

[0033] Please refer to Figures 1-12 , in an embodiment of the present invention, a roll - pressing and close - fitting automatic printing and labeling machine includes a chassis 1, and a roll - pressing module is provided on the side of the chassis 1. The roll - pressing module includes: A cross - arm 7 fixed to the side of the chassis 1 Two movable seats 8 are mounted on the horizontal arm 7 and can move towards each other along the length of the horizontal arm 7. The two movable seats 8 are respectively equipped with a hollow first pressure roller 9 and a second pressure roller 10 through a set of power mechanisms. The first pressure roller 9 and the second pressure roller 10 can be driven by the power mechanisms to perform deflection actions so that the first pressure roller 9 and the second pressure roller 10 respectively form a "V" shape structure and a "I" shape structure. When the first pressure roller 9 and the second pressure roller 10 form a "V" shape, and the goods with labels are attached pass through the "V" shape along the goods conveying direction, the pressure applying mechanism on the cross arm 7 can cause the first pressure roller 9 and the second pressure roller 10 to apply pressure to the labels attached to the goods. When the first pressure roller 9 and the second pressure roller 10 form a "I" shape, the air guide structure at the end of the second pressure roller 10 away from the first pressure roller 9 can blow air axially towards the "I" shape.

[0034] It should be noted that the side of the chassis 1 is provided with a first take-up roller 2 for winding the carbon ribbon, and the side of the chassis 1 is also provided with a placement table 5 for placing the label roll. The label and carbon ribbon enter the printing module 4 for printing, and the carbon ribbon after printing is collected by the second take-up roller 3 located on the side of the chassis 1. After the label is pasted, the backing paper is collected by the third take-up roller 6 located on the side of the chassis 1. The arrangement and use of the first take-up roller 2, the second take-up roller 3, the printing module 4, the placement table 5 and the third take-up roller 6 can be referred to the prior art, and will not be described in detail here. During operation, the goods are conveyed by the conveyor belt and pass sequentially through the side of the housing 1. The printing module 4 prints the label information onto the label. When the goods pass the label to be pasted, the label adheres to the goods. Then, the goods pass through the first pressure roller 9 and the second pressure roller 10. At this time, the first pressure roller 9 and the second pressure roller 10 are both in an inclined state, maintaining a "V" shape structure. The pressure application mechanism causes the first pressure roller 9 and the second pressure roller 10 to apply a certain pressure to the upper surface of the goods. Therefore, under the rolling action of the first pressure roller 9 and the second pressure roller 10, the label has a tendency to spread outward, which is beneficial for the parts of the label that are not attached to the goods to extend outward, ensuring that the label and the goods are effectively and completely pasted.

[0035] Furthermore, two symmetrical through slots are provided on the cross arm 7, and the two movable seats 8 are slidably fitted into the two through slots respectively. A servo drive module is provided on one side of the cross arm 7. Specifically, the servo drive module includes a bidirectional lead screw rotatably mounted on the side of the cross arm 7 and a servo motor mounted on the side of the cross arm 7 and whose output end is connected to the bidirectional lead screw. Two threaded sleeves are sleeved on the bidirectional lead screw, and the two threaded sleeves are fixedly connected to the two movable seats 8 respectively.

[0036] Since the two sets of power mechanisms have the same structure, the power mechanism connected to the first take-up roller 2 will be described in detail below; Please refer to it again. Figure 8 and Figure 10 The power mechanism includes a vertical tube 12 mounted on the movable seat 8. The vertical tube 12 is connected to the end of the first pressure roller 9, and the vertical tube 12 can be driven by a meshing assembly mounted on the movable seat 8 to drive the first pressure roller 9 to perform a deflection action. The vertical tube 12 is also connected to the pressure applying mechanism, which can drive the vertical tube 12 to move vertically relative to the movable seat 8. The meshing assembly includes a drive tube 11 rotatably mounted on the movable seat 8. The drive tube 11 is slidably fitted with the vertical tube 12, and a transmission structure is provided between them. The meshing assembly also includes a drive motor 13 mounted on the movable seat 8, a first gear 14 fixed on the output shaft of the drive motor 13, and a second gear 15 fixed on the drive tube 11. The first gear 14 and the second gear 15 mesh. The conductive structure includes two strip-shaped protrusions 1201 on the outer wall of the riser 12 and two strip-shaped grooves 1101 on the inner wall of the drive pipe 11. The strip-shaped grooves 1101 are adapted to the strip-shaped protrusions 1201, and both are parallel to the central axis of the drive pipe 11 and the riser 12.

[0037] With attachment Figure 6 Taking the state shown as an example, at this time, the first pressure roller 9 and the second pressure roller 10 present a "V" shape structure. After the first pressure roller 9 and the second pressure roller 10 have been working for a period of time, in order to remove dust and foreign objects from the first pressure roller 9 and the second pressure roller 10 and avoid dust and foreign objects from scratching the label, the "V" shape structure of the first pressure roller 9 and the second pressure roller 10 needs to be switched to a "I" shape structure. Specifically, the drive motor 13 works, and its output shaft drives the drive tube 11 to rotate through the first gear 14 and the second gear 15. Then, the drive tube 11 can drive the upright tube 12 to rotate through the strip groove 1101 and the strip protrusion 1201. Thus, the upright tube 12 drives the first pressure roller 9 to deflect until the first pressure roller 9 deflects from the inclined state to a position perpendicular to the side of the machine box 1. The deflection of the second pressure roller 10 is the same. It should be noted that when the states of the first pressure roller 9 and the second pressure roller 10 are switched, they need to be coordinated with the movement of the movable seat 8 mentioned above. This ensures that after the two rollers are deflected to a position perpendicular to the side of the chassis 1, the distance between the two movable seats 8 can be adjusted so that the ends of the first pressure roller 9 and the second pressure roller 10 away from the riser 12 can be connected.

[0038] To address this issue, the present invention incorporates a first pressure roller 9 and a second pressure roller 10 capable of performing oscillating movements. These rollers can form a "V" shape and an "I" shape, respectively. During the rolling process, the "V" shape helps to stretch the label outwards, effectively promoting a more seamless fit between the label and the product surface. This avoids the wrinkles that occur in areas where the label does not adhere properly, which can result from linear rolling. In such cases, the sensors on the automated production line may be unable to scan the barcode on the label during subsequent assembly, leading to analysis errors and severely impacting production efficiency.

[0039] Please refer to it again. Figure 8 and Figure 9 The pressure-applying mechanism includes a pneumatic assembly mounted on the horizontal arm 7. The pneumatic assembly is connected to two sets of symmetrically arranged elastic transmission structures mounted on the horizontal arm 7. Each set of elastic transmission structures is connected to two vertical pipes 12 via a telescopic arm assembly. The pneumatic assembly includes two cylinders 22 fixed to the horizontal arm 7 and a drive arm 23 fixedly connected to the movable ends of the two cylinders 22. The two ends of the drive arm 23 are respectively connected to the two sets of elastic transmission structures. The elastic transmission structure includes a guide arm 16 slidably mounted on the horizontal arm 7. The guide arm 16 has an assembly cavity, and a slider 19 fixedly connected to the drive arm 23 is slidably mounted within the assembly cavity. The guide arm 16 is connected to the telescopic arm assembly, and a guide post 17 is fixed inside the assembly cavity. The slider 19 is slidably connected to the guide post 17. A spring 18 is also sleeved on the outer periphery of the guide post 17. One end of the spring 18 is connected to the inner wall of the assembly cavity, and the other end is connected to the slider 19.

[0040] The telescopic arm assembly includes a first connecting arm 20 fixedly installed on the side of the guide arm 16 away from the drive arm 23 and a second connecting arm 21 slidably fitted with the first connecting arm 20, and the end of the second connecting arm 21 away from the guide arm 16 is rotatably connected to the riser 12.

[0041] In detail, during operation, when the movable end of the cylinder 22 extends, the guide arm 16 can be driven to slide vertically downward relative to the horizontal arm 7 via the drive arm 23. Correspondingly, the guide arm 16 drives the vertical tube 12 to slide relative to the drive tube 11 via the first connecting arm 20 and the second connecting arm 21. The first pressure roller 9 (second pressure roller 10) moves downward. After the first pressure roller 9 (second pressure roller 10) contacts the surface of the goods, as the movable end of the cylinder 22 continues to extend, the guide arm 16 can no longer move downward. Consequently, the slider 19 slides relative to the guide arm 16, and the spring 18 is compressed. As the compression of the spring 18 increases, the pressure applied by the first pressure roller 9 (second pressure roller 10) to the surface of the goods increases accordingly. It should be noted that when switching the presentation states of the first pressure roller 9 and the second pressure roller 10, it is necessary to coordinate the opposite movement of the two movable seats 8. When the movable seats 8 move, the first connecting arm 20 and the second connecting arm 21 slide relative to each other, ensuring that the cylinder 22 maintains an effective pressure transmission function for the first pressure roller 9 (second pressure roller 10) when there is a displacement change in the length direction of the horizontal arm 7.

[0042] Please refer to it again. Figure 11 and Figure 12 The air guiding structure includes a frustum 1001 located at the end of the second pressure roller 10 away from the first pressure roller 9. The frustum 1001 has a plurality of air passages 1004 equidistantly arranged along its circumference, which communicate with the second pressure roller 10. The second pressure roller 10 also has a conical protrusion 1002 and an annular portion 1003. A slit is formed between the conical protrusion 1002 and the annular portion 1003, which penetrates the air passages 1004. The riser 12 connected to the first pressure roller 9 is also connected to an air pump located in the housing 1 through a hose 1202.

[0043] After the first pressure roller 9 and the second pressure roller 10 form a "V" shape and have been working for a certain period of time, it is necessary to clean any dust or foreign matter that may be present on them. Specifically, the first pressure roller 9 and the second pressure roller 10 are switched to an "I" shape. Then, the air pump in the housing 1 is turned on, and air is pumped into the cylindrical cavity formed by the first pressure roller 9 and the second pressure roller 10 through the hose 1202 and the riser 12. The gas is evenly divided along the circumference by the conical protrusion 1002, enters the air passage 1004 through the slit between the conical protrusion 1002 and the annular part 1003, and is finally blown out along the axial direction of the "I" shape. Thus, multiple axial airflow jets are formed on the outer periphery of the "I" shape, which can effectively remove dust and foreign matter on the outer walls of the first pressure roller 9 and the second pressure roller 10, avoid scratching the label during subsequent rolling, ensure that the label information can be effectively identified in subsequent processing, and provide effective guarantee for production efficiency.

[0044] As another embodiment of the present invention, a method for roller pressing and affixing labels by the automatic printing and labeling machine is also proposed. During roller pressing, the first pressure roller 9 and the second pressure roller 10 present a "V" shaped structure. The pressure application mechanism provides pressure to the first pressure roller 9 and the second pressure roller 10, so that the first pressure roller 9 and the second pressure roller 10 act on the surface of the goods, causing the label to stretch outward. When the first pressure roller 9 and the second pressure roller 10 form an "I" shape, air is pumped into the first pressure roller 9 and the second pressure roller 10. The gas passes through the air guide structure and forms multiple axial airflow jets on the outer periphery of the "I" shape structure, blowing away dust and foreign objects on the outer walls of the first pressure roller 9 and the second pressure roller 10.

[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roller-pressing automatic printing and labeling machine, comprising a chassis, wherein a roller pressing module is provided on the side of the chassis; Its features are, The roll forming module includes: A cross arm fixed to the side of the chassis; Two movable seats are mounted on the horizontal arm and can move in opposite directions along the length of the horizontal arm. The two movable seats are equipped with a hollow first pressure roller and a second pressure roller respectively through a set of power mechanism. The first pressure roller and the second pressure roller can be driven by the power mechanism to perform a deflection action so that the first pressure roller and the second pressure roller form a "V" shape structure and a "I" shape structure respectively. When the first and second pressure rollers form a "V" shape, and the labeled goods pass through the "V" shape along the goods conveying direction, the pressure applying mechanism on the cross arm can cause the first and second pressure rollers to apply pressure to the label on the goods. When the first and second pressure rollers form a "I" shape, the air guide structure at the end of the second pressure roller away from the first pressure roller can blow air axially into the "I" shape.

2. The automatic printing and labeling machine of roller pressing type according to claim 1, characterized in that, The power mechanism includes a vertical tube disposed on the movable seat. The vertical tube is connected to the end of the first pressure roller, and the vertical tube can be driven by a gear assembly disposed on the movable seat to drive the first pressure roller to perform a deflection action. The vertical tube is also connected to the pressure applying mechanism, which can drive the vertical tube to move vertically relative to the movable seat.

3. The automatic printing and labeling machine of roller pressing and bonding type according to claim 2, characterized in that, The meshing assembly includes a drive tube rotatably mounted on the movable seat, the drive tube slidingly engaging with the riser, and a transmission structure between them. The meshing assembly also includes a drive motor mounted on the movable seat, a first gear fixed on the output shaft of the drive motor, and a second gear fixed on the drive tube, wherein the first gear meshes with the second gear.

4. The automatic printing and labeling machine of roller pressing type according to claim 3, characterized in that, The conductive structure includes two strip-shaped protrusions on the outer wall of the riser and two strip-shaped grooves on the inner wall of the drive pipe. The strip-shaped grooves are adapted to the strip-shaped protrusions, and both are parallel to the central axis of the drive pipe and the riser.

5. The automatic printing and labeling machine of roller pressing type according to claim 2, characterized in that, The pressure-applying mechanism includes a pneumatic component mounted on the cross arm. The pneumatic component is connected to two sets of elastic transmission structures symmetrically mounted on the cross arm, and each of the two sets of elastic transmission structures is connected to two vertical pipes through a telescopic arm assembly.

6. The automatic printing and labeling machine of roller pressing type according to claim 5, characterized in that, The pneumatic assembly includes two cylinders fixed to the cross arm and a drive arm fixedly connected to the movable ends of the two cylinders. The two ends of the drive arm are respectively connected to two sets of elastic transmission structures.

7. The automatic printing and labeling machine of roller pressing type according to claim 6, characterized in that, The elastic transmission structure includes a guide arm slidably disposed on the cross arm, the guide arm having an assembly cavity, and a slider fixedly connected to the drive arm slidably disposed within the assembly cavity. The guide arm is connected to the telescopic arm assembly, and a guide post is fixed inside the assembly cavity. The slider is slidably connected to the guide post. A spring is also sleeved on the outer periphery of the guide post. One end of the spring is connected to the inner wall of the assembly cavity, and the other end is connected to the slider.

8. The automatic printing and labeling machine of roller pressing type according to claim 7, characterized in that, The telescopic boom assembly includes a first connecting arm fixedly installed on the side of the guide arm away from the drive arm and a second connecting arm slidably fitted with the first connecting arm, wherein the end of the second connecting arm away from the guide arm is rotatably connected to the riser.

9. The automatic printing and labeling machine of roller pressing type according to claim 2, characterized in that, The air guiding structure includes a frustum located at the end of the second pressure roller away from the first pressure roller. The frustum has multiple air passages equidistantly arranged along its circumference that connect to the second pressure roller. The second pressure roller also has a conical protrusion and an annular portion. A slit is formed between the conical protrusion and the annular portion that passes through the air passages. The riser connected to the first pressure roller is also connected to an air pump located inside the housing via a flexible hose.

10. A method for roller pressing and affixing labels using an automatic printing and labeling machine, comprising a roller pressing and affixing automatic printing and labeling machine as described in any one of claims 1-9, characterized in that... During the rolling process, the first and second pressure rollers form a "V" shape. The pressure application mechanism provides pressure to the first and second pressure rollers, causing them to act on the surface of the goods and prompting the label to stretch outwards. When the first and second pressure rollers form an "I" shape, air is pumped into the first and second pressure rollers. The gas passes through the air guide structure and forms multiple axial airflow jets on the outer periphery of the "I" shape, blowing away dust and foreign objects on the outer walls of the first and second pressure rollers.

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