A paper bending degree correcting device

Abstract

This utility model relates to a paper curvature correction device, belonging to the technical field of paper processing equipment. It includes a worktable and a correction mechanism. The correction mechanism includes a first correction frame and a first heating assembly. The first heating assembly includes a first transmission roller, a first transmission belt, a first motor, and first heating rods. The first correction frame is fixedly mounted on the worktable. The first transmission roller is rotatably mounted on the first correction frame. The first transmission belt is sleeved on the first transmission roller. The first motor is fixedly mounted on the first correction frame and is drively connected to the first transmission roller. Multiple first heating rods are provided and fixedly mounted on the first correction frame. This utility model can improve the correction effect on curved paper.

Description

Technical Field

[0001] This utility model relates to the field of paper processing equipment, and in particular to a paper curvature correction device. Background Technology

[0002] In the modern printing, packaging, and paper product processing industries, paper, as a basic material, directly affects the quality of the final product. During production, storage, and transportation, paper is prone to bending and deformation due to factors such as changes in environmental humidity, temperature differences, improper stacking methods, or external pressure. This bending not only affects the paper's appearance but also adversely impacts subsequent processing steps such as printing, cutting, and folding, leading to decreased yield and resource waste.

[0003] Currently, Chinese utility model patent with publication number CN207876947U and publication date of September 18, 2018, proposes a paper straightening mechanism and a paper opener, including: a first limiting shaft, a second limiting shaft, and a third limiting shaft, wherein the axes of the first limiting shaft, the second limiting shaft, and the third limiting shaft are parallel to each other; the circumferential surfaces of the first limiting shaft and the second limiting shaft have a common tangent surface, which is located on the same side of the first limiting shaft and the second limiting shaft; part or all of the circumferential surface of the third limiting shaft is located on the same side of the common tangent surface as the first limiting shaft; the paper includes a first side and a second side arranged opposite to each other, and when the paper is wound on the paper roll, the first side faces the axis of the paper roll, and the second side faces away from the axis of the paper roll; the paper passes through the second limiting shaft, the third limiting shaft, and the first limiting shaft in sequence, with the second limiting shaft and the first limiting shaft both in contact with the first side of the paper, and the third limiting shaft in contact with the second side of the paper.

[0004] In use, by utilizing the first, second, and third limiting shafts, and through the design of their parallel and common tangent surfaces, combined with the rotation mechanism of the connecting parts, the bending state of the paper is gradually corrected, restoring it to flatness.

[0005] Regarding the aforementioned related technologies, when paper is placed in a coiled state and pressed for a long period of time, the method of physical reverse curvature correction is ineffective for paper that has already undergone plastic deformation, and it cannot eliminate internal fiber stress, resulting in low correction efficiency. Utility Model Content

[0006] To improve the effect of correcting bent paper, this utility model provides a paper curvature correction device.

[0007] This utility model provides a paper curvature correction device, which adopts the following technical solution:

[0008] A paper curvature correction device includes a worktable and a correction mechanism. The correction mechanism includes a first correction frame and a first heating component. The first heating component includes a first transmission roller, a first transmission belt, a first motor, and a first heating rod. The first correction frame is fixedly mounted on the worktable. The first transmission roller is rotatably mounted on the first correction frame. The first transmission belt is sleeved on the first transmission roller. The first motor is fixedly mounted on the first correction frame and is connected to the first transmission roller in a transmission manner. Multiple first heating rods are provided and are fixedly mounted on the first correction frame.

[0009] Preferably, the correction mechanism further includes a second correction frame and a second heating assembly. The second correction frame is fixedly installed above the first correction frame. The second heating assembly includes a second transmission roller, a second transmission belt, a second motor, and a second heating rod. The second transmission roller is rotatably installed on the second correction frame. The second transmission belt is sleeved on the second transmission roller. The second motor is fixedly installed on the second correction frame and is connected to the second transmission roller in a transmission connection. Multiple second heating rods are provided and are fixedly installed on the second correction frame.

[0010] Preferably, the second heating assembly further includes a first pressure roller, which is rotatably mounted on the second straightening frame, and the second transmission belt is sleeved on the second transmission roller and the first pressure roller.

[0011] Preferably, multiple first drive rollers are rotatably arranged on the first straightening frame.

[0012] Preferably, the correction mechanism further includes a humidification component, which includes a mounting frame, a pipe, and an atomizing nozzle. The mounting frame is fixedly mounted on the workbench, the pipe is fixedly mounted on the mounting frame, the pipe is connected to a water supply source, and the atomizing nozzle is mounted on the pipe.

[0013] Preferably, multiple atomizing nozzles are provided.

[0014] Preferably, the second heating assembly further includes an upper adjusting roller and a second lower pressing roller. The upper adjusting roller is rotatably mounted on the second straightening frame, and its upper end face abuts against the second transmission belt. The second lower pressing roller is rotatably mounted on the second straightening frame and is sleeved inside the second transmission belt.

[0015] Preferably, the workbench is further provided with a conveying mechanism, and two conveying mechanisms are arranged opposite to each other on the workbench. Each conveying mechanism includes a conveying frame, a conveying roller and a conveying motor. The conveying frame is fixedly installed on the workbench, the two conveying rollers are rotatably installed on the conveying frame, and the conveying motor is fixedly installed on the conveying frame. The conveying motor is connected to the conveying rollers in a driving connection.

[0016] Preferably, the workbench is further provided with a control terminal, which is electrically connected to the conveyor motor, the first motor, the second motor, the atomizing nozzle, the first heating rod, and the second heating rod.

[0017] In summary, this utility model has at least one of the following beneficial technical effects:

[0018] 1. By achieving efficient and flat heating treatment of paper, bending problems that may occur during the production process can be effectively reduced or eliminated. This is because the first drive belt makes large-area, uniform contact with the paper, and the first heating rod heats the first drive belt to a temperature below the paper's ignition point, placing the paper within an optimal straightening temperature range. This ensures uniform heating of the paper, preventing new deformation or damage caused by uneven localized temperatures, and improving the stability and reliability of the equipment.

[0019] 2. A dual-layer heating mechanism is provided. Under the synchronous drive of the second and first motors, the second and first transmission belts rotate synchronously, which can adapt to the correction of various paper bending directions. The corresponding first or second heating rod is activated, or both can be activated simultaneously to increase efficiency, thus enhancing the ability to correct paper bending and adapting to more diverse processing needs.

[0020] 3. The moisture in the paper is heated into steam, which breaks the hydrogen bonds in the paper fibers to eliminate the internal stress of the paper and reduce the plasticity of the paper. After high-temperature leveling, compared with the pure high-temperature method, the possibility of paper deformation rebound is reduced and the straightening effect is improved. At the same time, under the action of the first pressure roller, the paper can be heated faster and more evenly under the clamping and heating of the first and second transmission belts, which accelerates the removal of moisture and shaping. The water vapor generated can be quickly discharged through the gap between the raised second transmission belts, which improves the straightening efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 yes Figure 1 A frontal view diagram;

[0023] Figure 3 yes Figure 1 A cross-sectional view;

[0024] Figure 4 yes Figure 1 A left-view diagram;

[0025] Figure 5 yes Figure 3 A magnified view of part A in the diagram.

[0026] Explanation of reference numerals in the attached drawings: 100, workbench; 200, straightening mechanism; 210, first straightening frame; 220, first heating component; 221, first transmission roller; 222, first transmission belt; 223, first motor; 224, first heating rod; 230, second straightening frame; 240, second heating component; 241, second transmission roller; 242, second transmission belt; 243, second motor; 244, second heating rod; 245, first lower pressure roller; 246, upper adjustment roller; 247, second lower pressure roller; 250, humidification component; 251, mounting frame; 252, pipe; 253, atomizing nozzle; 300, conveying mechanism; 310, conveying frame; 320, conveying roller; 330, conveying motor; 400, control terminal. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] This utility model discloses a paper curvature correction device. (Refer to...) Figures 1 to 5 A paper curvature correction device mainly includes a workbench 100 and a correction mechanism 200. The correction mechanism 200 includes a first correction frame 210 and a first heating component 220. The first heating component 220 includes a first transmission roller 221, a first transmission belt 222, a first motor 223, and a first heating rod 224. The first correction frame 210 is fixedly installed on the workbench 100. The first transmission roller 221 is rotatably installed on the first correction frame 210. The first transmission belt 222 is sleeved on the first transmission roller 221. The first motor 223 is fixedly installed on the first correction frame 210 and is connected to the first transmission roller 221 in a transmission connection. Multiple first heating rods 224 are provided and are fixedly installed on the first correction frame 210.

[0033] During the paper conveying process, the paper is stretched and pressed onto the first transmission belt 222. The first motor 223 drives the first transmission belt 222 to rotate. The first transmission belt 222 is synchronously conveyed with the external conveying device of the paper. The paper simultaneously comes into contact with the heated first transmission belt 222. The high temperature breaks down the plasticity inside the paper, achieving efficient and smooth heating treatment of the paper, thereby effectively reducing or eliminating bending problems that may occur during the production process. Because the first transmission belt 222 makes large-area uniform contact with the paper, and the first heating rod 224 heats the first transmission belt 222 to a temperature below the ignition point of the paper, the paper is placed in an optimal straightening temperature range. This allows the paper to be heated evenly, avoiding new deformation or damage caused by uneven local temperature, and improving the stability and reliability of the equipment.

[0034] Reference Figures 1 to 3In some embodiments, the correction mechanism 200 further includes a second correction frame 230 and a second heating component 240. The second correction frame 230 is fixedly installed above the first correction frame 210. The second heating component 240 includes a second transmission roller 241, a second transmission belt 242, a second motor 243, and a second heating rod 244. The second transmission roller 241 is rotatably installed on the second correction frame 230. The second transmission belt 242 is sleeved on the second transmission roller 241. The second motor 243 is fixedly installed on the second correction frame 230 and is connected to the second transmission roller 241 in a transmission manner. Multiple second heating rods 244 are provided and are fixedly installed on the second correction frame 230.

[0035] The second transmission belt 242 not only increases the heating area when the paper passes through, but also allows for adjustment of the fixed height of the second straightening frame 230, enabling more precise adjustments to paper of different thicknesses or types. The second transmission roller 241, second transmission belt 242, second motor 243, and multiple second heating rods 244 in the second heating assembly 240 work in conjunction with the first assembly to provide a dual-layer heating mechanism. Under the synchronous drive of the second motor 243 and the first motor 223, the second transmission belt 242 rotates synchronously with the first transmission belt 222, adapting to the correction of various paper curvature directions. Corresponding first heating rods 224 or second heating rods 244 are activated, or both can be activated simultaneously to increase efficiency, enhancing the ability to correct paper curvature and adapting to more diverse processing needs.

[0036] Reference Figures 1 to 3 In some embodiments, the second heating assembly 240 further includes a first lower pressure roller 245, which is rotatably mounted on the second straightening frame 230. A second transmission belt 242 is sleeved on the second transmission roller 241 and the first lower pressure roller 245. Under the action of the first lower pressure roller 245, the second transmission belt 242 below the first lower pressure roller 245 can abut against the upper surface of the paper, realizing that the paper is thermally straightened under the double pressing action of the first transmission belt 222 and the second transmission belt 242. This makes the heating process more uniform, prevents the paper from slipping or wrinkling during the heating process, and improves the effect and efficiency of paper straightening.

[0037] Reference Figures 1 to 3 In some embodiments, multiple first drive rollers 221 are rotatably arranged on the first straightening frame 210. This improves the stability of the paper during transport, and the presence of multiple first drive rollers 221 ensures that the paper receives even support and drive throughout the heating process, reducing the risk of paper damage caused by excessive pressure at a single point.

[0038] Reference Figures 3 to 5In some embodiments, the correction mechanism 200 further includes a humidification component 250, which includes a mounting bracket 251, a pipe 252, and an atomizing nozzle 253. The mounting bracket 251 is fixedly mounted on the workbench 100, the pipe 252 is fixedly mounted on the mounting bracket 251, the pipe 252 is connected to a water supply source, and the atomizing nozzle 253 is mounted on the pipe 252. Before the paper enters the first heating assembly 220 or the second heating assembly 240, water is pumped into the pipe 252 through a pressurized water source. Then, the atomizing nozzle 253 sprays atomized water mist, which is evenly sprinkled on the paper surface, slightly wetting the paper. The paper is then conveyed into the first heating assembly 220 and / or the second heating assembly 240. The moisture in the paper is heated into steam, which breaks the hydrogen bonds in the paper fibers to eliminate the internal stress of the paper and reduce the plasticity of the paper. After high-temperature leveling, compared with the pure high-temperature method, the possibility of paper deformation rebound is reduced and the straightening effect is improved. At the same time, under the action of the first pressure roller 245, the paper can be heated faster and more evenly under the clamping and heating of the first transmission belt 222 and the second transmission belt 242, which accelerates the removal of moisture and shaping. The water vapor generated can be quickly discharged through the gap between the raised second transmission belts 242, which improves the straightening efficiency.

[0039] Reference Figures 3 to 5 In some embodiments, multiple atomizing nozzles 253 are provided. The design of multiple atomizing nozzles 253 ensures uniform moisture distribution and further improves the correction effect.

[0040] Reference Figure 3 In some embodiments, the second heating assembly 240 further includes an upper adjusting roller 246 and a second lower pressing roller 247. The upper adjusting roller 246 is rotatably mounted on the second straightening frame 230, and its upper end face abuts against the second transmission belt 242. The second lower pressing roller 247 is rotatably mounted on the second straightening frame 230 and is sleeved inside the second transmission belt 242. The upper adjusting roller 246 can keep the rear end of the second transmission belt 242 in an upward state. At the same time, under the downward pressure of the two second lower pressing rollers 247, the rear section of the second transmission belt 242 and the first transmission belt 222 are pressed tightly against each other and transported to the paper. It can also straighten the paper more evenly after it has been straightened by the moisture of the first lower pressing roller 245, thus improving the straightening effect.

[0041] Reference Figure 1In some embodiments, a conveying mechanism 300 is also provided on the workbench 100. Two conveying mechanisms 300 are arranged opposite each other on the workbench 100. Each conveying mechanism 300 includes a conveying frame 310, conveying rollers 320, and a conveying motor 330. The conveying frame 310 is fixedly installed on the workbench 100, the two conveying rollers 320 are rotatably mounted on the conveying frame 310, and the conveying motor 330 is fixedly installed on the conveying frame 310 and is drively connected to the conveying rollers 320. The design of the conveying mechanism 300 realizes the automated feeding and discharging process of paper, greatly improving work efficiency and reducing the need for manual intervention. The conveying motor 330 drives the two conveying rollers 320 to rotate, enabling the paper to be transported smoothly, enhancing the flexibility and adaptability of the entire system, and making it suitable for production lines of various sizes.

[0042] Reference Figure 1 In some embodiments, a control terminal 400 is also provided on the workbench 100. The control terminal 400 is electrically connected to the conveyor motor 330, the first motor 223, the second motor 243, the atomizing nozzle 253, the first heating rod 224, and the second heating rod 244. Based on real-time monitoring of the paper's travel speed, the operating speeds of the conveyor motor 330, the first motor 223, the second motor 243, and the atomizing nozzle 253 can be adjusted to ensure synchronous operation. This allows the atomizing nozzle 253 to spray water mist at a corresponding flow rate, achieving precise control. Furthermore, the heating temperatures of the first heating rod 224 and the second heating rod 244 can be adjusted accordingly, reducing the possibility of localized overheating.

[0043] The implementation principle of the paper curvature correction device in this embodiment of the utility model is as follows:

[0044] The first transmission belt 222 makes large-area uniform contact with the paper, and the first heating rod 224 heats the transmission belt to the optimal straightening temperature range below the paper's ignition point, ensuring uniform heating of the paper and avoiding new deformation or damage caused by uneven local temperature, thus improving the stability and reliability of the equipment. Secondly, the dual-layer heating mechanism, driven synchronously by the first motor 223 and the second motor 243, drives the two transmission belts to rotate synchronously, adapting to the straightening needs of various paper bending directions. The efficiency can be increased by selectively activating either the first heating rod 224 or the second heating rod 244, or both simultaneously, enhancing the straightening capability and adaptability to diverse processing needs. Furthermore, the moisture in the paper is converted into steam during heating, breaking the hydrogen bonds between fibers, reducing plasticity, and eliminating internal stress. This reduces the possibility of deformation rebound during high-temperature leveling, providing a better straightening effect compared to a purely high-temperature solution. Utilizing the action of the first pressure roller 245, the paper is heated faster and more uniformly under the clamping and heating of the two transmission belts, accelerating the moisture removal and setting process. The generated water vapor can be quickly discharged through the gaps between the second transmission belts 242, further improving the straightening efficiency and effect.

[0045] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A paper curvature correction device, characterized in that: The device includes a workbench (100) and a straightening mechanism (200). The straightening mechanism (200) includes a first straightening frame (210) and a first heating component (220). The first heating component (220) includes a first transmission roller (221), a first transmission belt (222), a first motor (223), and a first heating rod (224). The first straightening frame (210) is fixedly mounted on the workbench (100). The first transmission roller (221) is rotatably mounted on the first straightening frame (210). The first transmission belt (222) is sleeved on the first transmission roller (221). The first motor (223) is fixedly mounted on the first straightening frame (210) and is connected to the first transmission roller (221) in a transmission connection. Multiple first heating rods (224) are provided and are fixedly mounted on the first straightening frame (210).

2. The paper curvature correction device according to claim 1, characterized in that: The correction mechanism (200) further includes a second correction frame (230) and a second heating component (240). The second correction frame (230) is fixedly installed above the first correction frame (210). The second heating component (240) includes a second transmission roller (241), a second transmission belt (242), a second motor (243), and a second heating rod (244). The second transmission roller (241) is rotatably installed on the second correction frame (230). The second transmission belt (242) is sleeved on the second transmission roller (241). The second motor (243) is fixedly installed on the second correction frame (230) and is connected to the second transmission roller (241) in a transmission connection. Multiple second heating rods (244) are provided and are fixedly installed on the second correction frame (230).

3. The paper curvature correction device according to claim 2, characterized in that: The second heating assembly (240) further includes a first pressure roller (245), which is rotatably mounted on the second straightening frame (230), and the second transmission belt (242) is sleeved on the second transmission roller (241) and the first pressure roller (245).

4. The paper curvature correction device according to claim 2, characterized in that: Multiple first drive rollers (221) are rotatably mounted on the first straightening frame (210).

5. The paper curvature correction device according to any one of claims 2-4, characterized in that: The correction mechanism (200) further includes a humidification component (250), which includes a mounting bracket (251), a pipe (252), and an atomizing nozzle (253). The mounting bracket (251) is fixedly mounted on the workbench (100), the pipe (252) is fixedly mounted on the mounting bracket (251), the pipe (252) is connected to a water supply source, and the atomizing nozzle (253) is mounted on the pipe (252).

6. The paper curvature correction device according to claim 5, characterized in that: Multiple atomizing nozzles (253) are provided.

7. The paper curvature correction device according to claim 5, characterized in that: The second heating assembly (240) further includes an upper adjusting roller (246) and a second lower pressing roller (247). The upper adjusting roller (246) is rotatably mounted on the second straightening frame (230), and the upper end face of the upper adjusting roller (246) abuts against the second transmission belt (242). The second lower pressing roller (247) is rotatably mounted on the second straightening frame (230), and the second lower pressing roller (247) is sleeved inside the second transmission belt (242).

8. The paper curvature correction device according to claim 5, characterized in that: The workbench (100) is also provided with a conveying mechanism (300). Two conveying mechanisms (300) are arranged opposite to each other on the workbench (100). Each conveying mechanism (300) includes a conveying frame (310), a conveying roller (320), and a conveying motor (330). The conveying frame (310) is fixedly installed on the workbench (100). The two conveying rollers (320) are rotatably installed on the conveying frame (310). The conveying motor (330) is fixedly installed on the conveying frame (310). The conveying motor (330) is connected to the conveying rollers (320) in a transmission connection.

9. The paper curvature correction device according to claim 8, characterized in that: The workbench (100) is also equipped with a control terminal (400), which is electrically connected to the conveyor motor (330), the first motor (223), the second motor (243), the atomizing nozzle (253), the first heating rod (224), and the second heating rod (244).

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