An on-line film breaking device and method for a packaging machine trademark paper

Abstract

This invention provides an online label breaking device and method for packaging machines, belonging to the technical field of tobacco production equipment. The online label breaking device includes a coding shaft and a conveyor roller installed on the packaging machine. The coding shaft is located to the upper left of the conveyor roller, and a label breaking component is sleeved on the coding shaft. A module is provided on the surface of the conveyor roller, and the label paper is placed on top of the module. The online label breaking method includes the following steps: installing the label breaking component on the coding shaft; adjusting the distance between the blade and the conveyor roller; conveying the label paper between the conveyor roller and the label breaking component; the label breaking component squeezing the label paper to create four rows of blind holes on the surface of the adhesive bonding area of ​​the label paper; and conveying the label paper to subsequent processes. This invention can solve the problem of poor adhesive absorption and weak adhesion of label paper, reduce the number of downstream machine blockages and shutdowns, improve the effective operating rate of equipment, and ensure product quality.

Description

Technical Field

[0001] This invention belongs to the technical field of tobacco production equipment, and specifically relates to an online film-breaking device and method for packaging machine label paper. Background Technology

[0002] Cigarette label paper not only protects cigarettes and facilitates storage and transportation during market circulation, but also serves as a carrier for conveying information, promoting sales, and enhancing brand image. It is an indispensable means for cigarette products to realize and increase their value. Among them, laminated label paper, as a new type of cigarette packaging material, possesses strong visual appeal and impact, better showcasing the quality and cultural connotations of cigarette products.

[0003] However, when using laminated label paper to produce cigarette products, the surface of the laminated label paper is covered with an oil film, resulting in a high degree of smoothness and making it difficult for adhesive to penetrate. This often leads to the small cigarette packs not being firmly attached at the angles, compromising product quality. Furthermore, poorly attached cigarette packs can easily cause blockages and shutdowns when transported downstream, requiring operators to remove the blocked packs before the machine can be restarted, severely impacting the equipment's effective operating rate.

[0004] Therefore, during the production process of tobacco packaging machines, there are problems such as poor adhesive absorption and weak adhesion of the label paper due to the material processing characteristics of the label paper surface coating and varnishing. This increases the number of downstream machine blockages and shutdowns, reduces the effective operating rate of the equipment, and cannot guarantee product quality. Summary of the Invention

[0005] In view of this, the present invention proposes an online film breaking device and method for packaging machine label paper, which can solve the problems of poor adhesive absorption and weak adhesion of label paper, reduce the number of downstream machine blockages and shutdowns, improve the effective operating rate of equipment, and ensure product quality.

[0006] This invention is implemented as follows:

[0007] A first aspect of the present invention provides an online film-breaking device for packaging machine label paper, comprising a coding shaft, a conveyor roller, and a film-breaking assembly; wherein the coding shaft and the conveyor roller are both mounted on the packaging machine and are parallel to each other, the coding shaft is located to the upper left of the conveyor roller, and the rotational speed of the coding shaft is greater than that of the conveyor roller; the conveyor roller has multiple modules arranged circumferentially on its roller surface, each module having multiple suction holes, and a label paper is placed above the module; the film-breaking assembly is mounted on the coding shaft by clamp screws, and is used to break the film of the label paper when the conveyor roller conveys the label paper to the position of the coding shaft.

[0008] The technical advantages of the online film-breaking device for packaging machine label paper provided by this invention are as follows: By setting a film-breaking component on the coding shaft of the packaging machine, the film-breaking component can rotate with the coding shaft during the production operation of the packaging machine, thereby breaking the film on the oblique side of each sheet of label paper, destroying the coating layer on the surface of the adhesive bonding area of ​​the label paper, so that the adhesive bonding area of ​​each sheet of label paper passing through the coding shaft can be pierced, improving the adhesive permeability, thereby improving the adhesive absorption of the label paper, allowing the adhesive to penetrate into the label paper and enhancing the adhesion; by using a clamping screw to fix the film-breaking component to the coding shaft on the packaging machine, it has the characteristics of simple structure, stable connection between components, and orderly operation, so that its power comes from the original structure of the equipment, without the need to add a new power system, without affecting the main structure of the equipment, and can realize online film breaking of label paper during the production process of the packaging machine.

[0009] Based on the above technical solution, the online film breaking device for packaging machine label paper of the present invention can be further improved as follows:

[0010] The membrane breaking assembly includes a knife holder and a blade;

[0011] The tool holder is fixedly connected to the coding shaft, and the tool holder rotates with the rotation of the coding shaft. Two sets of symmetrical slots are provided on the left and right sides of the tool holder. Each set of slots includes a fan-shaped slot on the front and rear sides of the tool holder. Multiple threaded holes are provided in the middle of each set of slots.

[0012] The blade is a fan-shaped structure adapted to the shape of the fan-shaped groove. The blade is inserted into the fan-shaped groove and installed in the fan-shaped groove through the threaded hole and fastening bolt. The blade is double-sided serrated, and the serrations are distributed in a dotted array on the blade. The blades have the same cutting edge structure, and the cutting edges are all square or trapezoidal structures.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: By setting a knife holder with a fan-shaped groove and a blade with a fan-shaped structure, the guiding performance of the fan shape is utilized. The blade can slide into the fan-shaped groove along the two oblique sides of the fan-shaped groove, and the fan-shaped groove will limit the blade to prevent the blade from swinging around in the circumference, thus improving the stability of the film breaking component; by setting a fastening bolt through the knife holder and the blade, the blade is further limited and fixed, and it is also easier to install the blade and to disassemble and replace the blade later, effectively improving the convenience of use; and the blade structure set is conducive to the blade piercing the oil film layer in the adhesive bonding area of ​​the label paper, exposing the base paper of the label paper.

[0014] Furthermore, the relative positions between the conveying roller, the coding shaft, and the film-breaking assembly are as follows: the rotation axis of the conveying roller is lower than the rotation axis of the coding shaft; the rotation axis of the film-breaking assembly coincides with the rotation axis of the coding shaft.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting the film breaking component to be installed coaxially with the coding shaft, the gap between each blade on the film breaking component is consistent when it rotates with the coding shaft and is closest to the conveyor roller, thus ensuring the uniformity and effectiveness of the film breaking depth.

[0016] Furthermore, the conveying roller and the coding shaft rotate in opposite directions, and there is a gap between the conveying roller and the blade edge.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting the rotation direction of the conveyor roller and the coding shaft to be opposite, the label paper can be subjected to opposite forces when it is conveyed between the conveyor roller and the coding shaft, thus maintaining the stability of its position and preventing the label paper from shifting, which would lead to unstable film breaking position.

[0018] Furthermore, the number of sector-shaped slots is four, and the central angle of the sector-shaped slots is 160.43°.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the above settings facilitate accurate positioning of the blade, so that the blade installed on the fan-shaped groove can correspond exactly to the two adhesive pasting areas of the label paper.

[0020] Furthermore, there are four blades in total, and each of the four blades corresponds to one of the two adhesive application areas on the trademark paper.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by aligning the blade of the film-breaking component with the adhesive bonding area on the label paper, it can be ensured that the blade of the film-breaking component is aligned with the film-breaking position when it is rotated to contact the label paper, thus ensuring the accuracy of the film-breaking position.

[0022] Furthermore, the number of modules is 6.

[0023] Furthermore, the number of air intake holes is 12.

[0024] Furthermore, the rotational speed of the coding shaft is 6 times that of the transmission roller.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: With the above settings, the coding shaft can achieve a complete rotation from the moment the previous module on the conveyor roller moves away until the next module reaches the position of the coding shaft. This ensures that when the trademark paper on each module reaches the film breaking component, the relative position between the blade on the film breaking component and the trademark paper remains constant. In other words, when the trademark paper on each module reaches the film breaking component, the blade can puncture the surface of the trademark paper at the same position, ensuring the consistency of the film breaking position.

[0026] A second aspect of the present invention provides a method for online film breaking of packaging machine label paper, using the above-mentioned online film breaking device for packaging machine label paper, comprising the following steps:

[0027] S10: Install the film breaking assembly on the coding shaft, loosen the clamping screw on the blade holder, move the axial position of the blade holder on the coding shaft in the axial direction, and rotate the blade holder in the circumferential direction so that the blade is aligned with the adhesive pasting area of ​​the trademark paper adsorbed on the conveyor roller, and tighten the clamping screw to fix the film breaking assembly on the coding shaft.

[0028] S20: Loosen the fixing bolts of the blade and adjust the distance between the blade and the conveyor roller to make a gap of 0.1mm between the blade and the conveyor roller;

[0029] S30: The trademark paper is fed onto the module of the conveyor roller and held stably thereon by negative pressure;

[0030] S40: As the conveyor roller rotates, the label paper is conveyed between the conveyor roller and the film breaking assembly. The blade on the film breaking assembly and the conveyor roller squeeze the label paper. The blade makes four rows of blind holes on the surface of the adhesive bonding area on the label paper, destroying the film layer of the adhesive bonding area on the label paper and exposing the base paper.

[0031] S50: After the adhesive film on the label paper is broken, the two synchronous toothed belts on the conveyor roller transport the label paper to the subsequent process.

[0032] The technical effects of the online film breaking method for packaging machine label paper provided by this invention are as follows: By using this online film breaking method for packaging machine label paper, the film breaking process of label paper is completed during the label paper conveying process. There is no need for the material supplier to change the production process characteristics of label paper or change the original design of label paper. It can solve the problem of poor adhesive absorption and weak adhesion of label paper caused by the material process characteristics such as surface coating and varnishing of label paper during the production process of tobacco packaging machines. This reduces the number of downstream machine blockages and shutdowns, improves the effective operating rate of equipment, and ensures product quality.

[0033] Compared with existing technologies, the beneficial effects of the online film-breaking device and method for packaging machine label paper provided by the present invention are as follows: Firstly, through the online film-breaking device for packaging machine label paper, by setting a film-breaking component on the coding shaft of the packaging machine, the film-breaking component can rotate with the coding shaft during the production operation of the packaging machine, thereby breaking the film on the oblique side of each sheet of label paper being conveyed, destroying the coating layer on the surface of the adhesive bonding area of ​​the label paper, improving the adhesive permeability, thereby improving the adhesive absorption of the label paper, allowing the adhesive to penetrate into the label paper and enhancing the adhesion; Secondly, through the online film-breaking method for packaging machine label paper, the film-breaking process of label paper is completed during the label paper conveying process, without requiring the material supplier to change the production process characteristics of the label paper or change the original design of the label paper. This can solve the problem of poor adhesive absorption and weak adhesion of label paper caused by the material process characteristics of the label paper surface coating, varnish, etc. during the production process of tobacco packaging machines, thereby reducing the number of downstream machine blockages and shutdowns, improving the effective operating rate of equipment, and ensuring product quality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This invention provides a schematic diagram of an online film-breaking device for packaging machine label paper;

[0036] Figure 2 This invention provides a schematic diagram of the position of the coding shaft in the online film breaking device for packaging machine label paper;

[0037] Figure 3 This invention provides a schematic diagram of a film-breaking component in an online film-breaking device for packaging machine label paper;

[0038] Figure 4 This invention provides a schematic diagram of the blade holder of the film-breaking component in an online film-breaking device for packaging machine label paper;

[0039] Figure 5 This invention provides a schematic diagram of the blade of the film-breaking component in an online film-breaking device for packaging machine label paper;

[0040] Figure 6 This invention provides a flowchart of an online film breaking method for packaging machine label paper;

[0041] The attached diagram lists the components represented by each number as follows:

[0042] 11. Module; 12. Suction hole; 13. Coding shaft; 14. Conveyor roller; 2. Film breaking assembly; 21. Knife holder; 211. Sector groove; 212. Threaded hole; 22. Blade; 3. Label paper. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] like Figure 1-5As shown, the first aspect of the present invention provides an online film-breaking device for packaging machine label paper, including a coding shaft 13, a conveyor roller 14, and a film-breaking component 2; wherein, the coding shaft 13 and the conveyor roller 14 are both mounted on the packaging machine and are parallel to each other, the coding shaft 13 is located to the upper left of the conveyor roller 14, and the rotational speed of the coding shaft 13 is greater than the rotational speed of the conveyor roller 14; the conveyor roller 14 has a plurality of modules 11 arranged circumferentially on its roller surface, each module 11 is provided with a plurality of suction holes 12, and the label paper 3 is arranged above the module 11; the film-breaking component 2 is mounted on the coding shaft 13 by clamp screws, and is used to break the film of the label paper 3 when the conveyor roller 14 conveys the label paper 3 to the position of the coding shaft 13.

[0049] In use, the operator first installs the film-breaking assembly 2 onto the coding shaft 13, loosens the clamping screws on the blade holder 21, moves the blade holder 21 axially on the coding shaft 13, and rotates the blade holder 21 circumferentially so that the blade 22 is precisely aligned with the adhesive area of ​​the label paper adsorbed on the conveyor roller 14. The clamping screws are then tightened to fix the film-breaking assembly 2 onto the coding shaft 13. Next, the fixing bolts of the blade 22 are loosened, and the distance between the blade 22 and the conveyor roller 14 is adjusted to a gap of 0.1mm. Then, the label paper 3 is fed onto the module 11 of the conveyor roller 14, and negative pressure is applied to the module 11. A suction force is formed at the suction hole 12, causing the label paper 3 to be adsorbed at the suction hole 12 and kept stable at the module 11. When the device is running, as the conveyor roller 14 rotates, the label paper 3 is transported between the conveyor roller 14 and the film breaking component 2. The blade 22 on the film breaking component 2 and the conveyor roller 14 squeeze the label paper 3, and the blade 22 makes four rows of blind holes on the surface of the adhesive bonding area on the label paper 3, destroying the film layer of the adhesive bonding area on the label paper 3 and exposing the base paper. Finally, after the film breaking of the adhesive bonding area on the label paper 3 is completed, the two synchronous lug toothed belts on the conveyor roller 14 transport the label paper 3 to the subsequent process.

[0050] In the above technical solution, the membrane breaking component 2 includes a blade holder 21 and a blade 22;

[0051] The tool holder 21 is fixedly connected to the coding shaft 13, and the tool holder 21 rotates with the coding shaft 13. Two sets of symmetrical slots are provided on the left and right sides of the tool holder 21. Each set of slots includes a fan-shaped slot 211 opened on the front and rear sides of the tool holder 21. Multiple threaded holes 212 are opened in the middle of each set of slots.

[0052] The blade 22 is a fan-shaped structure that matches the shape of the fan-shaped groove 211. The blade 22 is inserted into the fan-shaped groove 211 and installed in the fan-shaped groove 211 through the threaded hole 212 and the fastening bolt. The blade 22 is double-sided serrated, and the serrations are distributed in a dotted array on the blade 22. The blades 22 have the same cutting edge structure, and the cutting edges are all square or trapezoidal structures.

[0053] When in use, when the blade 22 is worn and needs to be replaced or adjusted, the blade 22 can be inserted into the fan-shaped groove 211 or slid in the fan-shaped groove 211. Therefore, the fan-shaped groove 211 can guide and limit the blade 22 to prevent the blade 22 from swinging around. At the same time, the blade 22 can be installed and fixed on the fan-shaped groove 211 by fastening bolts and threaded holes 212.

[0054] Furthermore, in the above technical solution, the relative positions between the conveyor roller 14, the coding shaft 13 and the film breaking assembly 2 are as follows: the rotation axis of the conveyor roller 14 is lower than the rotation axis of the coding shaft 13; the rotation axis of the film breaking assembly 2 coincides with the rotation axis of the coding shaft 13.

[0055] In use, the conveyor roller 14 and the coding shaft 13 rotate in opposite directions. The conveyor roller 14 rotates clockwise and the coding shaft 13 rotates counterclockwise. There is a distance between the roller surfaces of the two. This design is to facilitate the installation of the film breaking component 2 between the conveyor roller 14 and the coding shaft 13. At the same time, the reverse rotation design of the conveyor roller 14 and the coding shaft 13 is to facilitate film breaking on the moving label paper 3 without affecting its conveying.

[0056] Furthermore, in the above technical solution, the rotation directions of the conveyor roller 14 and the coding shaft 13 are opposite, and there is a gap between the conveyor roller 14 and the blade of the blade 22.

[0057] Furthermore, in the above technical solution, there are four sector-shaped slots 211, and the central angle of the sector-shaped slots 211 is 160.43°.

[0058] Furthermore, in the above technical solution, there are four blades 22, and the four blades 22 correspond to two adhesive pasting areas on the trademark paper 3.

[0059] In use, the four blades 22 are divided into two groups, each group having two fan-shaped slots 211. The two blades 22 of one group are installed in the fan-shaped slots 211 on the front and rear sides of the left slot on the tool holder 21, respectively; the two blades 22 of the other group are installed in the fan-shaped slots 211 on the front and rear sides of the right slot on the tool holder 21, respectively. The cutting edge of the blade 22 is located on the outer edge of the blade 22, and the cutting edge only covers 1 / 2 of the outer edge of the blade 22. The inclined direction of the cutting edge is towards the rotation direction of the marking shaft 13. After installation, the cutting edges of the two groups of blades 22 installed in the front and rear sides of the slot are located on the same side.

[0060] Furthermore, in the above technical solution, the number of modules 11 is 6.

[0061] Furthermore, in the above technical solution, the number of air intake holes 12 is 12.

[0062] Furthermore, in the above technical solution, the rotational speed of the coding shaft 13 is 6 times that of the rotational speed of the conveyor roller 14.

[0063] When in use, the coding shaft 13 rotates at 6 times the speed of the conveyor roller 14. This way, when each module 11 on the conveyor roller 14 picks up and conveys a label paper 3 to the coding shaft 13, the coding shaft 13 rotates one revolution.

[0064] like Figure 6 The diagram shown is a flowchart of an online film-breaking method for packaging machine label paper provided by a second aspect of the present invention. Using the above-described online film-breaking device for packaging machine label paper, the method includes the following steps:

[0065] S10: Install the film breaking assembly 2 on the coding shaft 13, loosen the clamping screw on the knife holder 21, move the axial position of the knife holder 21 on the coding shaft 13 axially, and rotate the knife holder 21 circumferentially so that the blade 22 is aligned with the adhesive pasting area of ​​the trademark paper adsorbed on the conveyor roller 14. Tighten the clamping screw to fix the film breaking assembly 2 on the coding shaft 13.

[0066] S20: Loosen the fixing bolts of the blade 22 and adjust the distance between the blade 22 and the conveyor roller 14 so that there is a gap of 0.1mm between the blade 22 and the conveyor roller 14.

[0067] S30: The label paper 3 is conveyed to the module 11 of the conveyor roller 14 and held stably on it by negative pressure;

[0068] S40: As the conveyor roller 14 rotates, the label paper 3 is conveyed between the conveyor roller 14 and the film breaking assembly 2. The blade 22 on the film breaking assembly 2 and the conveyor roller 14 squeeze the label paper 3. The blade 22 then punches four rows of blind holes on the surface of the adhesive bonding area on the label paper 3, destroying the film layer of the adhesive bonding area on the label paper 3 and exposing the base paper.

[0069] S50: After the adhesive film on the label paper 3 is broken, the two synchronous toothed belts on the conveyor roller 14 transport the label paper 3 to the subsequent process.

[0070] Specifically, the principle of this invention is as follows: First, the film-breaking assembly 2 is installed on the coding shaft 13. The clamping screws on the blade holder 21 are loosened, the axial position of the blade holder 21 on the coding shaft 13 is moved axially, and the blade holder 21 is rotated circumferentially so that the blade 22 is aligned with the adhesive bonding area of ​​the trademark paper adsorbed on the conveyor roller 14. The clamping screws are then tightened to fix the film-breaking assembly 2 on the coding shaft 13. Then, the fixing bolts of the blade 22 are loosened, and the distance between the blade 22 and the conveyor roller 14 is adjusted to a gap of 0.1mm. Then, the trademark paper 3 is conveyed to the module 11 of the conveyor roller 14, and a negative current is connected to the module 11. The pressure creates suction at the suction hole 12, causing the label paper 3 to be adsorbed at the suction hole 12 and kept stable at the module 11. When the device is running, as the conveyor roller 14 rotates, the label paper 3 is transported between the conveyor roller 14 and the film breaking component 2. The blade 22 on the film breaking component 2 and the conveyor roller 14 squeeze the label paper 3, and the blade 22 makes four rows of blind holes on the surface of the adhesive bonding area on the label paper 3, destroying the film layer of the adhesive bonding area on the label paper 3 and exposing the base paper. Finally, after the film breaking of the adhesive bonding area on the label paper 3 is completed, the two synchronous lug toothed belts on the conveyor roller 14 transport the label paper 3 to the subsequent process.

[0071] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An online film-breaking device for packaging machine label paper, comprising a coding shaft (13), a conveyor roller (14), and a film-breaking assembly (2); characterized in that, The coding shaft (13) and the conveyor roller (14) are both mounted on the packaging machine and are parallel to each other. The coding shaft (13) is located to the upper left of the conveyor roller (14), and the rotation speed of the coding shaft (13) is greater than that of the conveyor roller (14). The conveyor roller (14) has multiple modules (11) arranged circumferentially on its roller surface. Each module (11) has multiple suction holes (12). The label paper (3) is placed above the module (11). The film breaking assembly (2) is mounted on the coding shaft (13) by clamp screws. It is used to break the label paper (3) when the conveyor roller (14) conveys the label paper (3) to the position of the coding shaft (13). The film breaking assembly (2) includes a knife holder (21) and a blade (22). The tool holder (21) is fixedly connected to the coding shaft (13), and the tool holder (21) rotates with the rotation of the coding shaft (13). The tool holder (21) has two sets of symmetrical slots on its left and right sides. Each set of slots includes a fan-shaped slot (211) on the front and rear sides of the tool holder (21). Each set of slots has multiple threaded holes (212) in the middle. The blade (22) is a fan-shaped structure adapted to the shape of the fan-shaped groove (211). The blade (22) is inserted into the fan-shaped groove (211) and installed in the fan-shaped groove (211) through the threaded hole (212) and fastening bolt. The blade (22) is double-sided serrated, and the serrations are distributed in a dotted array on the blade (22). The blades (22) have the same cutting edge structure, and the cutting edges are all square or trapezoidal structures. There are 4 fan-shaped grooves (211), and the central angle of the fan-shaped grooves (211) is 160.43°.

2. The online film-breaking device for packaging machine label paper according to claim 1, characterized in that, The relative positions of the conveyor roller (14), the coding shaft (13), and the film breaking assembly (2) are as follows: the rotation axis of the conveyor roller (14) is lower than the rotation axis of the coding shaft (13); the rotation axis of the film breaking assembly (2) coincides with the rotation axis of the coding shaft (13).

3. The packaging machine label paper online film breaking device according to claim 2, characterized in that, The conveying roller (14) and the coding shaft (13) rotate in opposite directions, and there is a gap between the conveying roller (14) and the blade (22).

4. The online film-breaking device for packaging machine label paper according to claim 3, characterized in that, There are four blades (22) in total, and each of the four blades (22) corresponds to one of the two adhesive application areas on the trademark paper (3).

5. The packaging machine label paper online film breaking device according to claim 4, characterized in that, The number of modules (11) is 6.

6. The packaging machine label paper online film breaking device according to claim 5, characterized in that, The number of air intake holes (12) is 12.

7. The packaging machine label paper online film breaking device according to claim 6, characterized in that, The rotational speed of the coding shaft (13) is 6 times that of the rotational speed of the conveyor roller (14).

8. A method for online film breaking of packaging machine label paper, using an online film breaking device for packaging machine label paper as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S10: Install the film breaking assembly (2) on the coding shaft (13), loosen the clamping screw on the knife holder (21), move the axial position of the knife holder (21) on the coding shaft (13) axially, and rotate the knife holder (21) circumferentially so that the blade (22) is aligned with the adhesive pasting area of ​​the trademark paper adsorbed on the conveyor roller (14), and tighten the clamping screw to fix the film breaking assembly (2) on the coding shaft (13); S20: Loosen the fixing bolts of the blade (22) and adjust the distance between the blade (22) and the conveyor roller (14) so ​​that there is a gap of 0.1mm between the blade (22) and the conveyor roller (14); S30: The trademark paper (3) is conveyed to the module (11) of the conveyor roller (14) and held stably thereon by means of negative pressure; S40: As the conveyor roller (14) rotates, the trademark paper (3) is conveyed between the conveyor roller (14) and the film breaking assembly (2). The blade (22) on the film breaking assembly (2) and the conveyor roller (14) squeeze the trademark paper (3). The blade (22) makes four rows of blind holes on the surface of the adhesive bonding area on the trademark paper (3), destroying the coating layer of the adhesive bonding area on the trademark paper (3) and exposing the base paper. S50: After the adhesive film on the trademark paper (3) is broken, the two synchronous toothed belts on the conveyor roller (14) transport the trademark paper (3) to the subsequent process.

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