A sizing assembly for a papermaking system and a method of sizing

Abstract

The application belongs to the technical field of papermaking, and particularly relates to a sizing assembly of a papermaking system and a sizing method thereof; the sizing assembly comprises a sizing roller, a glue storage cabin for placing glue is arranged in the sizing roller, the glue storage cabin is connected with a glue supply channel, the glue supply channel is arranged on the surface of the sizing roller, the glue supply channel is partially exposed on the surface of the sizing roller, and the glue in the glue supply channel can be discharged to perform sizing under the pressure of paper; the glue supply channel is connected with a glue control assembly, the glue control assembly can adjust the flow rate of the glue in the glue supply channel according to the temperature change of the surface of the sizing roller; the glue supply channel is arranged on the surface of the sizing roller, and the glue control assembly is arranged in the sizing roller, so that the paper can be uniformly sized, and the flow rate of the glue in the glue supply channel can be adjusted when the temperature of the surface of the sizing roller changes, so that the sizing quality is ensured.

Description

Technical Field

[0001] This invention belongs to the field of papermaking technology, and particularly relates to a sizing component and sizing method for a papermaking system. Background Technology

[0002] Sizing is an important step in paper production, designed to improve the performance and properties of paper by adding specific chemicals. Sizing agents can form a protective film on the paper surface, preventing moisture penetration and improving the paper's water resistance. They can also increase the paper's tensile strength and folding endurance, making the paper more durable during use.

[0003] In the prior art, the sizing agent is transferred to the paper for gluing by a sizing roller. The surface temperature of the sizing roller is related to the flowability and distribution uniformity of the sizing agent. When the surface temperature of the sizing roller is too high, it will cause the flow rate of the sizing agent to increase, which will easily cause uneven sizing and directly affect the sizing quality. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a sizing component and sizing method for a papermaking system. The sizing component is provided on the surface of the sizing roller, and a glue control component is provided inside the sizing roller. This allows for uniform sizing of the paper and enables the control of the glue flow rate in the glue supply channel to ensure sizing quality when the surface temperature of the sizing roller changes.

[0005] In view of this, the present invention provides a sizing component for a papermaking system, including a sizing roller. The sizing roller has a glue container for holding glue liquid inside. The glue container is connected to a sizing component disposed on the surface of the sizing roller through a glue supply channel. The sizing component is partially exposed on the surface of the sizing roller and can discharge the glue liquid inside for sizing under the pressure of the paper. The sizing component is connected to a glue control component, which can adjust the glue liquid flow rate in the glue supply channel according to the temperature change of the sizing roller surface.

[0006] In the above technical solution, the glue application assembly further includes a glue application groove circumferentially formed on the surface of the glue application roller and extending along the length of the glue application roller. A fixed frame plate is provided inside the glue application groove on one side of the surface of the glue application roller. A glue coating unit is slidably arranged inside the fixed frame plate along the radial direction of the glue application roller. A glue stop block is abutted below the glue coating unit. The top of the glue stop block abuts against the fixed frame plate, and the bottom of the glue stop block is elastically connected to a first support plate. The first support plate is fixedly connected to the side wall of the glue application groove, and a flow channel is provided on the first support plate.

[0007] In this technical solution, the paper presses against the coating unit, and the coating unit drives the bottom elastically connected to the first support plate to move downward. A channel is formed between the glue stop block and the fixed frame plate to allow the glue liquid to enter the coating unit. The upper surface of the coating unit discharges the glue liquid and applies glue to the paper. When there is no paper on the surface of the coating roller to apply pressure to the coating unit, the glue liquid inside the coating roller will not flow out continuously, thus making full use of the glue liquid.

[0008] In the above technical solution, the top of the stop block is an arc-shaped structure, the bottom of the fixed frame plate is provided with an arc-shaped abutment groove corresponding to the stop block, and a first sealing ring is provided between the stop block and the fixed frame plate, and the first sealing ring and the abutment groove are fixedly connected.

[0009] In this technical solution, when the glue application unit is not under pressure, the top of the glue stop block and the bottom of the fixed frame plate are in contact. The first sealing ring prevents the glue from overflowing when not being applied. When the glue application unit is under pressure, the glue stop block moves downward, and the top of the glue stop block and the first sealing ring disengage, allowing the glue to enter the glue application unit through the glue stop block.

[0010] In the above technical solution, the bottom of the adhesive stop block is provided with a downward-opening moving groove, and a limit frame with an upward opening is slidably abutted in the moving groove. The bottom of the limit frame is fixedly connected to the first support plate. Elastic elements are arranged in an array along the length direction in the limit frame. The elastic elements can push the top of the adhesive stop block and the bottom of the adhesive application unit to abut. The outer wall of the limit frame and the inner wall of the moving groove are abutted and provided with a second sealing ring.

[0011] In this technical solution, the elastic element is an array of compression springs. The inclusion of a moving groove, a limiting frame, and a second sealing ring prevents the adhesive from contacting the elastic element, thus avoiding any impact on its reset performance. The moving groove and limiting frame ensure the stability of the stop block's movement.

[0012] In the above technical solution, the glue application unit further includes a glue application block, with sliding plates on both sides of the glue application block. The sliding plates can slide in the corresponding grooves on both sides of the fixed frame plate. Glue supply grooves are provided at the lower part of both sides of the glue application block. The glue supply grooves are connected to the glue application groove on the side of the glue application block away from the glue stop block through a glue channel. At least one glue application roller is rotatably arranged in the glue application groove. The glue application roller is tangent to the glue application side. An arc-shaped abutment side is provided on the bottom side of the glue application block corresponding to the glue stop block.

[0013] In this technical solution, during the application of adhesive, the coating unit moves into the coating tank, the adhesive stop block and the first sealing ring separate to allow the adhesive liquid to pass through. The adhesive liquid enters from the adhesive supply tanks set on both sides of the coating block, passes through the adhesive liquid channel into the coating tank, and is applied to the paper by rotating the coating roller. The adhesive liquid can also be coated on the surface of the coating roller under the action of the coating roller and the paper passing through, ensuring uniform application of adhesive to the paper.

[0014] In the above technical solution, the adhesive control component further includes an air storage chamber disposed on the inner side of the surface of the adhesive roller, a reactive gas is disposed in the air storage chamber, the air storage chamber is connected to the adhesive supply channel through an air passage, a sealing component is slidably disposed at the end of the air passage, and a first fixing collar is disposed in the adhesive supply channel corresponding to the sealing component, the reactive gas can push the sealing component and the first fixing collar to cooperate and limit the flow rate of adhesive in the adhesive supply channel.

[0015] In this technical solution, the reactive gas is a gas that expands when heated and contracts when cooled. When the surface temperature of the glue roller rises, the reactive gas in the gas storage chamber expands and its volume increases. This expansion pushes the sealing element at the end of the ventilation channel toward the first fixed collar, thereby reducing the area through which the glue liquid passes and limiting the flow of the glue liquid. This reduces the amount of glue liquid on the surface of the glue roller and prevents uneven glue application due to increased fluidity caused by temperature rise, which would affect the glue application quality. The external paper transport mechanism slows down the transport speed to cooperate and ensure the glue application quality.

[0016] In the above technical solution, the sealing component further includes a sealing rod, a sealing ball is provided on one side of the first fixing collar, the sealing ball can abut against the first fixing collar to seal the glue supply channel, a third sealing ring is provided on the side of the first fixing collar and the sealing ball that abuts, the outer ring of the sealing rod is provided with a sliding groove, an annular slider is slidably provided in the sliding groove, the upper ring of the sealing rod is provided with a return groove, a second fixing collar is fixedly provided in the return groove on one side of the first fixing collar, a first spring is provided in the return groove, the first spring is sleeved on the sealing rod, one end of the first spring is fixedly connected to the sealing rod, and the other end is fixedly connected to the second fixing collar.

[0017] In the above technical solution, furthermore, the glue supply channel is provided with a diversion channel on both sides of the first fixing collar.

[0018] In the above technical solution, the outer surface of the application roller is made of a heat-conducting material, which can transfer heat to the air storage chamber.

[0019] It also includes the method of using the sizing components of the aforementioned papermaking system, including the following steps:

[0020] S1: Press the paper firmly against the surface of the glue roller to position the paper and ensure that it can fully contact the glue block. The glue roller is driven by an external drive device to cooperate with the external paper transport mechanism to perform paper glue application.

[0021] S2: The paper presses against the glue block, the glue block retracts into the glue application groove, and drives the bottom glue stop block to move downward. The glue passes through the flow channel on the first support plate and enters the glue block for glue supply.

[0022] S3: When the surface temperature of the glue roller is too high, the thermal expansion of the reaction gas pushes the clamping part to move towards the first fixed collar, which restricts the flow rate of glue in the glue supply channel and slows down the transmission speed of the glue roller and the external paper conveying mechanism.

[0023] S4: The surface temperature of the glue roller drops or even drops to the normal range, the volume of the reaction gas shrinks, the clamping part moves away from the first fixed collar to restore the flow rate of glue in the glue supply channel, and the transmission speed of the glue roller and the external paper conveying mechanism is restored.

[0024] The beneficial effects of this invention are:

[0025] 1. A gluing component is provided on the surface of the gluing roller, and a glue control component is provided inside the gluing roller. This enables uniform gluing of the paper and controls the flow rate of the glue in the glue supply channel when the surface temperature of the gluing roller changes, thus ensuring the quality of gluing.

[0026] 2. The paper presses against the coating unit, which drives the glue-stopping block on the bottom elastically connected to the first support plate to move downward. A channel is formed between the glue-stopping block and the fixed frame plate to allow the glue liquid to enter the coating unit. The glue liquid is discharged from the upper surface of the coating unit and glues the paper. When there is no paper on the surface of the glue roller to apply pressure to the coating unit, the glue liquid inside the glue roller will not flow out continuously, making full use of the glue liquid.

[0027] 3. The reactant gas is a gas that expands when heated and contracts when cooled. When the surface temperature of the glue roller rises, the reactant gas in the gas storage chamber expands and its volume increases. This expansion pushes the sealing element at the end of the air passage towards the first fixed collar, thereby reducing the area through which the glue liquid passes and limiting the flow of the glue liquid. This reduces the amount of glue liquid on the surface of the glue roller and prevents uneven glue application due to increased fluidity caused by temperature rise, which would affect the glue application quality. The external paper transport mechanism slows down the transport speed to cooperate and ensure the glue application quality. Attached Figure Description

[0028] Figure 1 This is a partial cross-sectional structural schematic diagram of the adhesive roller;

[0029] Figure 2 This is a partial cross-sectional structural schematic diagram of the adhesive roller;

[0030] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0031] Figure 4 This is a front view of the sectional view of the glue application roller;

[0032] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0033] Figure 6 This is a schematic diagram of the adhesive application unit;

[0034] Figure 7 This is a schematic diagram of the internal structure of the adhesive application unit;

[0035] Figure 8 yes Figure 2 A magnified view of a section at point C;

[0036] Figure 9 This is a structural schematic diagram of the sealing component.

[0037] The markings in the diagram are as follows:

[0038] 1. Glue roller; 2. Glue hopper; 3. Glue supply channel; 4. Glue application assembly; 5. Glue control assembly; 7. Glue application groove; 8. Fixed frame plate; 9. Glue application unit; 10. Glue stop block; 11. First support plate; 12. Flow channel; 13. Abutment groove; 14. First sealing ring; 15. Moving groove; 16. Limiting frame; 17. Elastic element; 18. Second sealing ring; 19. Glue application block; 20. Slide plate; 21. Slide groove; 2 2. Glue supply tank; 23. Glue channel; 24. Glue application tank; 25. Glue application roller; 26. Glue application side; 27. Abutment side; 28. Air storage chamber; 29. ​​Ventilation channel; 30. Sealing component; 31. First fixing collar; 32. Sealing rod; 33. Sealing ball; 34. Third sealing ring; 35. Sliding groove; 36. Sliding block; 37. Return groove; 38. Second fixing collar; 39. First spring; 40. Diversion channel. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0041] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" 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 application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0044] First embodiment:

[0045] like Figure 1-9 As shown, this embodiment provides a sizing component 4 for a papermaking system, including a sizing roller 1. The sizing roller 1 has a glue container 2 for holding glue liquid inside. The glue container 2 is connected to the sizing component 4 disposed on the surface of the sizing roller 1 through a glue supply channel 3. The sizing component 4 is partially exposed on the surface of the sizing roller 1. Under the pressure of the paper, it can discharge the glue liquid inside for sizing. The sizing component 4 is connected to a glue control component 5. The glue control component 5 can adjust the glue liquid flow rate of the glue supply channel 3 according to the temperature change of the surface of the sizing roller 1.

[0046] like Figure 1-5 As shown, the glue application assembly 4 includes a glue application groove 7 circumferentially formed on the surface of the glue application roller 1 and extending along the length of the glue application roller 1. A fixed frame plate 8 is provided on one side of the surface of the glue application roller 1 inside the glue application groove 7. A glue coating unit 9 is slidably arranged in the fixed frame plate 8 along the radial direction of the glue application roller 1. A glue stop block 10 is abutted below the glue coating unit 9. The top of the glue stop block 10 abuts against the fixed frame plate 8, and the bottom of the glue stop block 10 is elastically connected to a first support plate 11. The first support plate 11 is fixedly connected to the side wall of the glue application groove 7, and a flow channel 12 is provided on the first support plate 11.

[0047] The paper presses against the coating unit 9, which causes the elastic block 10 at the bottom, which is connected to the first support plate 11, to move downward. A channel is formed between the block 10 and the fixed frame plate 8 to allow the glue to enter the coating unit 9. The glue is discharged from the upper surface of the coating unit 9 and glues the paper. When there is no paper on the surface of the glue roller 1 to apply pressure to the coating unit 9, the glue inside the glue roller 1 will not flow out continuously, thus making full use of the glue.

[0048] like Figure 3and Figure 5 As shown, the top of the stop block 10 is an arc-shaped structure, and the bottom of the fixing frame plate 8 is provided with an arc-shaped abutment groove 13 corresponding to the stop block 10. A first sealing ring 14 is provided between the stop block 10 and the fixing frame plate 8, and the first sealing ring 14 and the abutment groove 13 are fixedly connected.

[0049] When the glue application unit 9 is not under pressure, the top of the glue stop block 10 and the bottom of the fixed frame plate 8 are in contact with the abutment groove 13. The first sealing ring prevents the glue from overflowing when not being applied. When the glue application unit 9 is under pressure, the glue stop block 10 moves downward, and the top of the glue stop block 10 and the first sealing ring disengage, allowing the glue to enter the glue application unit 9 through the glue stop block 10.

[0050] like Figure 3 and Figure 5 As shown, the bottom of the adhesive stop block 10 is provided with a downward-opening moving groove 15. A limit frame 16 with an upward opening is slidably abutted inside the moving groove 15. The bottom of the limit frame 16 is fixedly connected to the first support plate 11. Elastic members 17 are arranged in an array along the length direction inside the limit frame 16. The elastic members 17 can push the top of the adhesive stop block 10 to abut against the bottom of the adhesive application unit 9. The outer wall of the limit frame 16 abuts against the inner wall of the moving groove 15 and is provided with a second sealing ring 18.

[0051] The elastic element 17 is a compression spring arranged in an array. The arrangement of the moving groove 15, the limiting frame 16, and the second sealing ring 18 can prevent the adhesive from contacting the elastic element 17, thus avoiding affecting the reset performance of the elastic element 17. The moving groove 15 and the limiting frame 16 ensure the stability of the movement of the stop block 10.

[0052] like Figure 5 and Figure 6 As shown, the glue application unit 9 includes a glue application block 19. Slide plates 20 are provided on both sides of the glue application block 19. The slide plates 20 can slide in the corresponding slide grooves 21 provided on both sides of the fixed frame plate 8. Glue supply grooves 22 are provided on the lower part of both sides of the glue application block 19. The glue supply grooves 22 are connected to the glue application groove 24 on the side of the glue application block 19 away from the glue stop block 10 through the glue channel 23. At least one glue application roller 25 is rotatably arranged in the glue application groove 24. The glue application roller 25 is tangent to the glue application side 26. The bottom side of the glue application block 19 is provided with an arc-shaped abutment side 27 corresponding to the glue stop block 10.

[0053] During glue application, the glue coating unit 9 moves into the glue application tank 7, the glue stop block 10 and the first sealing ring 14 separate to allow the glue liquid to pass through. The glue liquid enters from the glue supply tanks 22 set on both sides of the glue coating block 19, passes through the glue channel 23 and enters the glue coating tank 24. The glue is applied to the paper by rotating the glue coating roller 25. The glue liquid can also be coated on the surface of the glue coating roller 1 under the action of the glue coating roller 1 and the paper passing through, ensuring uniform glue application to the paper.

[0054] like Figure 4 , Figure 8 and Figure 9 As shown, the adhesive control assembly 5 includes an air storage chamber 28 disposed on the inner side of the surface of the adhesive roller 1. The air storage chamber 28 is filled with reactive gas. The air storage chamber 28 is connected to the adhesive supply channel 3 through an air passage 29. A sealing member 30 is slidably disposed at the end of the air passage 29. A first fixing ring 31 is disposed in the adhesive supply channel 3 corresponding to the sealing member 30. The reactive gas can push the sealing member 30 and the first fixing ring 31 to cooperate and limit the flow rate of adhesive in the adhesive supply channel 3.

[0055] The reactive gas is a gas that expands when heated and contracts when cooled. When the surface temperature of the glue roller 1 rises, the reactive gas in the gas storage chamber 28 expands and its volume increases. It pushes the sealing member 30 at the end of the ventilation channel 29 to move towards the first fixed collar 31 through the ventilation channel 29. By reducing the area through which the glue liquid passes through the glue supply channel 3, the flow of the glue liquid is restricted, thereby reducing the amount of glue liquid on the surface of the glue roller 1. This prevents the glue liquid from becoming more fluid due to the increased temperature, which would lead to uneven glue application and affect the glue application quality. The external paper transport mechanism slows down the transport speed to cooperate and ensure the glue application quality.

[0056] like Figure 8 and Figure 9 The sealing component 30 shown includes a sealing rod 32. A sealing ball 33 is provided on one side of the first fixing collar 31. The sealing ball 33 can abut against the first fixing collar 31 to seal the glue supply channel 3. A third sealing ring 34 is provided on the abutting side 27 of the first fixing collar 31 and the sealing ball 33. A sliding groove 35 is provided on the outer ring of the sealing rod 32. An annular slider 36 is slidably provided in the sliding groove 35. A return groove 37 is provided on the upper ring of the sealing rod 32. A second fixing collar 38 is fixedly provided on one side of the first fixing collar 31 in the return groove 37. A first spring 39 is provided in the return groove 37. The first spring 39 is sleeved on the sealing rod 32. One end of the first spring 39 is fixedly connected to the sealing rod 32, and the other end is fixedly connected to the second fixing collar 38.

[0057] like Figure 8 As shown, the glue supply channel 3 is provided with diversion channels 40 connected to both sides of the first fixed collar 31.

[0058] The outer surface of the application roller 1 is made of a heat-conducting material, which can transfer heat to the air storage chamber 28.

[0059] It also includes the sizing method of the sizing component 4 of the above-mentioned papermaking system, including the following steps:

[0060] S1: Press the paper against the surface of the glue roller 1 to position the paper and ensure that it can fully contact the glue block 19. Drive the glue roller 1 with the external drive device to perform the paper glue application work in conjunction with the external paper transport mechanism.

[0061] S2: The paper presses against the glue block 19, the glue block 19 retracts into the glue application groove 7, and drives the bottom glue stop block 10 to move downward. The glue passes through the flow channel 12 on the first support plate 11 and enters the glue block 19 for glue supply.

[0062] S3: When the surface temperature of the glue roller 1 is too high, the thermal expansion of the reaction gas pushes the clamping part to move towards the first fixed collar 31, which restricts the flow rate of the glue in the glue supply channel 3, and at the same time slows down the transmission speed of the glue roller 1 and the external paper conveying mechanism.

[0063] S4: The surface temperature of the glue roller 1 drops or even drops to the normal range, the volume of the reaction gas shrinks, the clamping part moves away from the first fixed collar 31 to restore the flow rate of the glue in the glue supply channel 3, and the transmission speed of the glue roller 1 and the external paper transport mechanism is restored.

[0064] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A sizing assembly (4) for a papermaking system, comprising a sizing roller (1), characterized in that, The glue roller (1) is provided with a glue container (2) for holding glue liquid. The glue container (2) is connected to a glue application component (4) on the surface of the glue roller (1) through a glue supply channel (3). The glue application component (4) is partially exposed on the surface of the glue roller (1). Under the pressure of the paper, it can discharge the glue liquid inside for glue application. The glue application component (4) is connected to a glue control component (5). The glue control component (5) can adjust the glue liquid flow rate of the glue supply channel (3) according to the temperature change of the surface of the glue roller (1). The adhesive control component (5) includes an air storage chamber (28) disposed on the inner side of the surface of the adhesive roller (1). The air storage chamber (28) contains reactive gas. The air storage chamber (28) is connected to the adhesive supply channel (3) through an air passage (29). A sealing component (30) is slidably disposed at the end of the air passage (29). A first fixing ring (31) is disposed in the adhesive supply channel (3) corresponding to the sealing component (30). The reactive gas can push the sealing component (30) and the first fixing ring (31) to cooperate and limit the flow rate of adhesive in the adhesive supply channel (3).

2. The sizing assembly (4) of the papermaking system according to claim 1, characterized in that, The glue application assembly (4) includes a glue application groove (7) circumferentially opened on the surface of the glue application roller (1) and extending along the length direction of the glue application roller (1). A fixed frame plate (8) is provided inside the glue application groove (7) on one side of the surface of the glue application roller (1). A glue coating unit (9) is slidably arranged inside the fixed frame plate (8) along the radial direction of the glue application roller (1). A glue stop block (10) is abutted below the glue coating unit (9). The top of the glue stop block (10) abuts against the fixed frame plate (8), and the bottom of the glue stop block (10) is elastically connected to a first support plate (11). The first support plate (11) is fixedly connected to the side wall of the glue application groove (7), and a flow channel (12) is provided on the first support plate (11).

3. The sizing component (4) of the papermaking system according to claim 2, characterized in that, The top of the stop block (10) is an arc-shaped structure, and the bottom of the fixed frame plate (8) is provided with an arc-shaped abutment groove (13) corresponding to the stop block (10). A first sealing ring (14) is provided between the stop block (10) and the fixed frame plate (8), and the first sealing ring (14) and the abutment groove (13) are fixedly connected.

4. The sizing component (4) of the papermaking system according to claim 3, characterized in that, The bottom of the adhesive stop block (10) is provided with a downward-opening moving groove (15). A limit frame (16) with an upward opening is slidably abutted in the moving groove (15). The bottom of the limit frame (16) is fixedly connected to the first support plate (11). Elastic elements (17) are arranged in an array along the length direction in the limit frame (16). The elastic elements (17) can push the top of the adhesive stop block (10) and the bottom of the adhesive application unit (9) to abut. The outer wall of the limit frame (16) abuts against the inner wall of the moving groove (15) and is provided with a second sealing ring (18).

5. The sizing component (4) of the papermaking system according to claim 2, characterized in that, The glue application unit (9) includes a glue application block (19), and a sliding plate (20) is provided on both sides of the glue application block (19). The sliding plate (20) can slide in the corresponding sliding groove (21) provided on both sides of the fixed frame plate (8). A glue supply groove (22) is provided on the lower part of both sides of the glue application block (19). The glue supply groove (22) is connected to the glue application groove (24) on the side of the glue application block (19) away from the glue stop block (10) through the glue channel (23). At least one glue application roller (25) is rotatably provided in the glue application groove (24). The glue application roller (25) is tangent to the glue application side (26). An arc-shaped abutment side (27) is provided on the bottom side of the glue application block (19) corresponding to the glue stop block (10).

6. The sizing assembly (4) of the papermaking system according to claim 1, characterized in that, The sealing component (30) includes a sealing rod (32), a sealing ball (33) is provided on one side of the first fixed collar (31) of the sealing rod (32), the sealing ball (33) can abut against the first fixed collar (31) to seal the glue supply channel (3), a third sealing ring (34) is provided on the abutting side (27) of the first fixed collar (31) and the sealing ball (33), a sliding groove (35) is provided on the outer ring of the sealing rod (32), an annular slider (36) is slidably provided in the sliding groove (35), a return groove (37) is provided on the upper ring of the sealing rod (32), a second fixed collar (38) is fixedly provided on one side of the first fixed collar (31) of the return groove (37), a first spring (39) is provided in the return groove (37), the first spring (39) is sleeved on the sealing rod (32), one end of the first spring (39) is fixedly connected to the sealing rod (32), and the other end is fixedly connected to the second fixed collar (38).

7. The sizing assembly (4) of the papermaking system according to claim 1, characterized in that, The glue supply channel (3) is provided with a diversion channel (40) on both sides of the first fixed collar (31).

8. The sizing component (4) of the papermaking system according to claim 1, characterized in that, The outer surface of the glue roller (1) is made of a heat-conducting material, which can transfer heat to the air storage chamber (28).

9. A sizing method based on the sizing component (4) of the papermaking system according to claim 1, characterized in that, Includes the following steps: S1: Press the paper against the surface of the glue roller (1) to position the paper and ensure that it can fully contact the glue block (19). Drive the glue roller (1) through the external drive device to cooperate with the external paper transport mechanism to perform paper glue application. S2: The paper presses against the glue block (19), the glue block (19) retracts into the glue application groove (7), and drives the bottom glue stop block (10) to move downward. The glue passes through the flow channel (12) on the first support plate (11) and enters the glue block (19) for glue supply. S3: When the surface temperature of the glue roller (1) is too high, the thermal expansion of the reaction gas pushes the clamping member to move towards the first fixed collar (31), which restricts the flow rate of the glue in the glue supply channel (3) and slows down the transmission speed of the glue roller (1) and the external paper transport mechanism. S4: When the surface temperature of the glue roller (1) drops or even drops to the normal range, the volume of the reaction gas shrinks, the clamping member moves away from the first fixed collar (31) to restore the flow rate of the glue in the glue supply channel (3), and the transmission speed of the glue roller (1) and the external paper transport mechanism is restored.

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