Device for flattening paper curl

Abstract

The utility model relates to a device for flattening paper curl. The device comprises an unwinding assembly, a longitudinal leveling assembly, a transverse leveling assembly and a conveying assembly which are sequentially arranged along a paper conveying path. The transverse leveling assembly comprises at least one arc-shaped pressing roller unit, each arc-shaped pressing roller unit comprises an arc-shaped upper roller, an arc-shaped lower roller and a first driving unit, the arc-shaped lower rollers are vertically parallel to the arc-shaped upper rollers, the first driving units are used for driving the arc-shaped upper rollers to ascend and descend, and the arc-shaped upper rollers are provided with a plurality of upper rolling wheels. The arc-shaped lower roller is provided with lower rolling wheels corresponding to the upper rolling wheels in a one-to-one mode. According to the device for flattening the curled paper, the problem that the curled paper is curled after being cut is solved, and the problem that the curled paper enters a printing machine to cause jamming of the printing machine or substandard printing quality is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of web paper leveling, in particular to a device for flattening paper curl. Background Art

[0002] With the progress of society and the increasing needs of people, the types and quality of paper are constantly improving. After the paper is manufactured and formed, it still needs to be further processed in depth according to the requirements of customers, such as cutting, printing, etc. The flatness of the paper is particularly important for printing. If the paper is curled, it may cause the printing machine to jam or the printing to be unclear and uneven during printing, seriously affecting the printing quality and efficiency of the paper. At present, in the existing production operations, during the process of conveying and cutting the rolled paper, the tension of the paper is adjusted by using a rotating roller and the paper is bent in the reverse direction to level the paper. However, this method is more effective for leveling the longitudinal curl of the paper, and the leveling effect on the transverse curl of the paper is poor. The rolled paper may still have the phenomenon of transverse curl after cutting. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the utility model is to design a device for flattening paper curl to solve the problem of curl of the rolled paper after cutting.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] Design a device for flattening paper curl, including an unwinding assembly, a longitudinal leveling assembly, a transverse leveling assembly and a conveying assembly arranged in sequence along the paper conveying path; the transverse leveling assembly includes at least one group of arc-shaped roller units, and each arc-shaped roller unit includes an arc-shaped upper roller, an arc-shaped lower roller arranged parallel to the arc-shaped upper roller up and down, and a first driving unit for driving the arc-shaped upper roller to lift. The arc-shaped upper roller is provided with a plurality of upper rolling wheels, and the arc-shaped lower roller is provided with lower rolling wheels corresponding to the upper rolling wheels one by one.

[0006] The device designed in this solution for flattening paper curl is used to be connected to a paper cutting mechanism, and cut the roll paper according to specifications for paper printing. Using this device can effectively solve the problems of lateral curl and longitudinal curl of the paper after cutting, and avoid the situation that the curled paper causes the printing machine to jam or the printing quality not meeting the standard when entering the printing machine. Specifically, after the roll paper is installed on the unwinding assembly, it is unwound and conveyed to the cutting mechanism under the drive of the conveying assembly. A longitudinal leveling assembly and a lateral leveling assembly are arranged between the unwinding assembly and the conveying assembly. The paper conveyed out from the unwinding assembly undergoes tension adjustment and longitudinal reverse bending and folding by the longitudinal leveling assembly, changing the state of the longitudinal curl of the paper; after being longitudinally leveled, the paper is conveyed to the lateral leveling assembly. The lateral leveling assembly consists of at least one arc-shaped roller unit, and the arc-shaped roller unit consists of an arc-shaped upper roller and an arc-shaped lower roller. The arc-shaped upper roller and the arc-shaped lower roller have arcs that are bent along the lateral direction of the paper, and there is a passage for the paper to pass between them. Driven by the first drive unit, the arc-shaped upper roller presses down on the paper in the passage, and the paper fits with the arc-shaped upper roller to make the paper bend laterally towards the back of the paper, achieving lateral leveling; the arc-shaped upper roller is set in a form that can be adjusted in height, and the contact degree between the paper and the arc-shaped upper roller can be changed to adjust the angle of reverse bending of the paper, realizing the adjustment of lateral leveling. The arc-shaped upper roller and the arc-shaped lower roller are respectively provided with corresponding upper rolling wheels and lower rolling wheels, which reduce the friction between the paper and the arc-shaped upper roller and the arc-shaped lower roller while not affecting lateral leveling, facilitating the conveyance of the paper.

[0007] Further, the arc-shaped upper roller includes an upper arc-shaped support member, and the upper rolling wheels are arranged in an array along the arc surface of the upper arc-shaped support member; the arc-shaped lower roller includes a lower arc-shaped support member, and the lower rolling wheels are arranged in an array along the arc surface of the lower arc-shaped support member.

[0008] Both the upper arc-shaped support member and the lower arc-shaped support member are bent along the lateral direction of the paper to form arc surfaces, and the paper is bent laterally towards the back of the paper by fitting with the arc surfaces; the upper rolling wheels and the lower rolling wheels are arranged in an array along the arc surfaces, and through holes for the rolling wheels to pass through are formed on the arc surfaces. The surfaces of the rolling wheels pass through the through holes and slightly protrude from the arc surfaces to contact the paper, playing a role in conveying the paper.

[0009] Further, the first drive unit includes at least one drive shaft threadedly connected to the upper arc-shaped support member, and a first drive member for driving the drive shaft to rotate.

[0010] The drive shaft is a lead screw, the first drive member is a drive motor, a threaded hole threadedly connected to the lead screw is provided on the side surface of the upper arc-shaped support member, and the drive motor is drivingly connected to the lead screw. The drive motor drives the lead screw to rotate, thereby realizing the rising and falling of the arc-shaped upper roller.

[0011] Further, two sets of first driving units are arranged on both sides of the upper arc-shaped support member along the paper conveying direction. Each set of the first driving units includes two driving shafts, and the two driving shafts are drivingly connected to each other.

[0012] In order to ensure the smooth lifting of the arc-shaped upper roller, a set of first driving units are respectively arranged on both sides of the upper arc-shaped support member to synchronously drive the lifting of the arc-shaped upper roller. Each set of the first driving units contains two driving shafts, which are respectively arranged at two corners on the side surface of the upper arc-shaped support member. The two driving shafts are connected by a belt or a chain, and one of the driving shafts is connected to the first driving member through a belt or a chain to realize the synchronous rotation of the driving shafts.

[0013] Further, the longitudinal leveling assembly includes a paper feeding roller, a longitudinal leveling unit, and a paper discharging roller. The longitudinal leveling unit includes two first rollers and a second roller arranged in parallel up and down, and a roller angle adjusting unit for adjusting the roller angle.

[0014] The longitudinal leveling assembly realizes the longitudinal leveling of the paper. The paper conveyed out from the unwinding assembly first passes through the paper feeding roller to change the conveying angle of the paper and then enters the longitudinal leveling unit, and is leveled through the longitudinal reverse bending of the first roller and the second roller in the longitudinal leveling unit; meanwhile, the roller angle adjusting unit can adjust the height of the first roller to realize the adjustment of the paper tension and reduce the curling caused by the unbalanced paper tension; the longitudinally leveled paper passes through the paper discharging roller to change the conveying angle and then enters the arc-shaped pressing roller unit.

[0015] Further, the height of the paper feeding roller is higher than the height of the second roller. Two paper discharging rollers are provided, the longitudinal leveling unit is located between the two paper discharging rollers, and the height of the two paper discharging rollers is higher than the height of the first roller.

[0016] The height of the paper feeding roller is higher than the height of the second roller, which plays a role in carrying and changing the conveying angle of the paper conveyed out from the unwinding assembly; two paper discharging rollers are provided. The first paper discharging roller is located between the longitudinal leveling unit and the paper feeding roller, and the second paper discharging roller is located between the longitudinal leveling unit and the arc-shaped pressing roller unit. The paper conveyed out from the longitudinal leveling unit passes through the first paper discharging roller to change the angle and then is conveyed to the second paper discharging roller. The height of the supporting surface of the second paper discharging roller is the same as the height of the paper inlet of the arc-shaped pressing roller unit, so that the paper can smoothly enter the arc-shaped pressing roller unit.

[0017] Further, the conveying assembly includes an upper conveying roller unit and a lower conveying roller unit arranged in parallel up and down, and a second driving unit. The upper conveying roller unit and the lower conveying roller unit respectively include a plurality of conveying rollers, and conveyor belts are equidistantly arranged between the conveying rollers.

[0018] The conveying component is the power source for paper conveyance. The paper enters the conveyance channel between the upper conveyance roller unit and the lower conveyance roller unit and contacts the conveyor belt sleeved between the conveyance rollers. The second drive unit drives the conveyance rollers to rotate, and then the conveyor belt drives the paper to move, realizing the paper conveyance of the entire device.

[0019] Further, it further includes an oven, which covers the longitudinal leveling component and the transverse leveling component. The oven is respectively provided with a paper inlet and a paper outlet at one end close to the longitudinal leveling component and the transverse leveling component.

[0020] During the storage and transportation of the paper roll, the moisture content in the paper is uneven due to moisture absorption, and the internal stress is unbalanced, resulting in curling. Therefore, an oven is covered outside the longitudinal leveling component and the transverse leveling component. When the paper is leveled, the paper is baked to release the internal stress during the leveling process, thereby improving the effect of paper leveling.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] The device for flattening paper curl designed in this solution is used to be connected with a paper cutting mechanism to cut the paper roll according to specifications for paper printing. By using this device, the problems of transverse curl and longitudinal curl of the paper after cutting can be effectively solved, and it can be avoided that the curled paper causes the printing machine to jam or the printing quality not to meet the standard when entering the printing machine. Specifically, after the paper roll is installed on the unwinding component, it is unwound and conveyed to the cutting mechanism under the drive of the conveying component, and a longitudinal leveling component and a transverse leveling component are arranged between the unwinding component and the conveying component. The paper conveyed out from the unwinding component undergoes tension adjustment and longitudinal reverse bending and folding through the longitudinal leveling component, changing the state of the longitudinal curl of the paper; after the paper is longitudinally leveled, it is conveyed to the transverse leveling component. The transverse leveling component is composed of at least one arc-shaped press roller unit. The arc-shaped press roller unit is composed of an arc-shaped upper roller and an arc-shaped lower roller. The arc-shaped upper roller and the arc-shaped lower roller have arcs bent along the transverse direction of the paper, and there is a channel for the paper to pass between them. Under the drive of the first drive unit, the arc-shaped upper roller presses down on the paper in the channel, and the paper fits with the arc-shaped upper roller to make the paper bend transversely towards the paper back, realizing transverse leveling; the arc-shaped upper roller is set in a form that can be adjusted in height, and the contact degree between the paper and the arc-shaped upper roller can be changed to adjust the angle of reverse bending of the paper, realizing the adjustment of transverse leveling. The arc-shaped upper roller and the arc-shaped lower roller are respectively provided with corresponding upper roller pressing wheels and lower roller pressing wheels, which reduce the friction between the paper and the arc-shaped upper roller and the arc-shaped lower roller while not affecting transverse leveling, facilitating the conveyance of the paper. Description of the Drawings

[0023] Figure 1 It is a structural diagram of the device for flattening paper curl according to an embodiment of the present utility model.

[0024] Figure 2 Schematic diagram of the paper transmission path according to an embodiment of the present utility model.

[0025] Figure 3 Structural diagram of the lateral leveling assembly according to an embodiment of the present utility model.

[0026] Illustration: 1. Unwinding assembly; 2. Longitudinal leveling assembly; 21. Paper feeding roller; 22. Longitudinal leveling unit; 23. Paper discharging roller; 221. First roller; 222. Second roller; 223. Roller angle adjusting unit; 3. Lateral leveling assembly; 31. Arc-shaped pressing roller unit; 311. Arc-shaped upper roller; 312. Arc-shaped lower roller; 313. First driving unit; 3111. Upper rolling wheel; 3112. Upper arc-shaped support; 3121. Lower rolling wheel; 3122. Lower arc-shaped support; 3131. Driving shaft; 3132. First driving member; 4. Transmission assembly; 41. Upper transmission roller unit; 42. Lower transmission roller unit; 43. Second driving unit; 44. Transmission roller; 45. Conveyor belt; 5. Oven; 51. Paper inlet; 52. Paper outlet. Detailed implementation manners

[0027] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0028] As Figures 1 to 3 shown, this embodiment provides a device for flattening paper curl, including an unwinding assembly 1, a longitudinal leveling assembly 2, a lateral leveling assembly 3, and a transmission assembly 4 arranged in sequence along the paper transmission path; the lateral leveling assembly 3 includes at least one group of arc-shaped pressing roller units 31, the number of the arc-shaped pressing roller units 31 is set according to the actual situation, and the arc degrees or arc orientations of different arc-shaped pressing roller units 31 can be set differently. In this example, one group of arc-shaped pressing roller units 31 is provided. The arc-shaped pressing roller unit 31 includes an arc-shaped upper roller 311, an arc-shaped lower roller 312 arranged parallel to the upper and lower of the arc-shaped upper roller 311, and a first driving unit 313 for driving the arc-shaped upper roller 311 to lift. The arc-shaped upper roller 311 is provided with a plurality of upper rolling wheels 3111, and the arc-shaped lower roller 312 is provided with lower rolling wheels 3121 corresponding to the upper rolling wheels 3111 one by one.

[0029] The device for flattening the warped paper in this embodiment is used to be connected with a paper cutting mechanism to cut the roll paper according to specifications for paper printing. By using this device, the problems of lateral warping and longitudinal warping of the paper after cutting can be effectively solved, and it can be avoided that the warped paper causes the printing machine to jam or the printing quality not to meet the standard when entering the printing machine. Specifically, after the roll paper is installed on the unwinding assembly 1, it is unwound and conveyed to the cutting mechanism under the belt feeding of the conveying assembly 4. A longitudinal leveling assembly 2 and a transverse leveling assembly 3 are arranged between the unwinding assembly 1 and the conveying assembly 4. The paper conveyed out from the unwinding assembly 1 undergoes tension adjustment and longitudinal reverse bending and folding by the longitudinal leveling assembly 2 to change the state of longitudinal warping of the paper; after being longitudinally leveled, the paper is conveyed to the transverse leveling assembly 3. The transverse leveling assembly 3 is composed of at least one arc-shaped pressing roller unit 31. The arc-shaped pressing roller unit 31 is composed of an arc-shaped upper roller 311 and an arc-shaped lower roller 312. The arc-shaped upper roller 311 and the arc-shaped lower roller 312 have a curvature that bends along the transverse direction of the paper, and there is a passage for the paper to pass between them. Driven by the first driving unit 313, the arc-shaped upper roller 311 presses down on the paper in the passage, and the paper fits with the arc-shaped upper roller 311 to make the paper bend transversely towards the paper back to achieve transverse leveling; the arc-shaped upper roller 311 is set in a form that can be adjusted in height, and the contact degree between the paper and the arc-shaped upper roller 311 can be changed to adjust the angle of reverse bending of the paper to achieve the adjustment of transverse leveling. The arc-shaped upper roller 311 and the arc-shaped lower roller 312 are respectively provided with corresponding upper rolling wheels 3111 and lower rolling wheels 3121, which reduce the friction between the paper and the arc-shaped upper roller 311 and the arc-shaped lower roller 312 while not affecting transverse leveling, facilitating the conveyance of the paper.

[0030] As Figure 3 shown, the arc-shaped upper roller 311 includes an upper arc-shaped support 3112, and the upper rolling wheels 3111 are arranged in an array along the arc surface of the upper arc-shaped support 3112; the arc-shaped lower roller 312 includes a lower arc-shaped support 3122, and the lower rolling wheels 3121 are arranged in an array along the arc surface of the lower arc-shaped support 3122. Both the upper arc-shaped support 3112 and the lower arc-shaped support 3122 are bent along the transverse direction of the paper to form an arc surface, and the curvature of the arc surface is designed and adjusted according to the actual production situation and the type of paper. The paper bends transversely towards the paper back by fitting the arc surface with the paper; the upper rolling wheels 3111 and the lower rolling wheels 3121 are arranged in an array along the arc surface, and through holes for the rolling wheels to pass through are provided on the arc surface, and the surface of the rolling wheels passes through the through holes and slightly protrudes from the arc surface to contact the paper, playing a role in conveying the paper.

[0031] As Figure 3As shown, the first driving unit 313 includes at least one driving shaft 3131 threadedly connected to the upper arc-shaped support 3112, and a first driving member 3132 for driving the driving shaft 3131 to rotate. The driving shaft 3131 is a lead screw, the first driving member 3132 is a driving motor, and a threaded hole threadedly connected to the lead screw is provided on the side surface of the upper arc-shaped support 3112. The driving motor is drivingly connected to the lead screw, and the driving motor drives the lead screw to rotate to realize the ascending and descending of the arc-shaped upper roller 311. In order to ensure the smooth ascending and descending of the arc-shaped upper roller 311, a set of first driving units 313 are respectively arranged on both sides of the upper arc-shaped support 3112 to synchronously drive the arc-shaped upper roller 311 to ascend and descend. Each set of first driving units 313 includes two driving shafts 3131, which are respectively arranged at two corners on the side surface of the upper arc-shaped support 3112. The two driving shafts 3131 are connected by a belt or a chain, and one of the driving shafts 3131 is connected to the first driving member 3132 through a belt or a chain to realize the synchronous rotation of the driving shafts 3131.

[0032] As Figure 1 and Figure 2As shown, the longitudinal leveling assembly 2 includes a paper feed roller 21, a longitudinal leveling unit 22, and a paper discharge roller 23. The longitudinal leveling unit 22 includes two first rollers 221 and second rollers 222 arranged in parallel up and down, and a roller angle adjustment unit 223 for adjusting the roller angle. The longitudinal leveling assembly 2 realizes the longitudinal leveling of the paper. The paper transmitted from the unwinding assembly 1 first passes through the paper feed roller 21 to change the angle of paper transmission, and then enters the longitudinal leveling unit 22. In the longitudinal leveling unit 22, the first roller 221 and the second roller 222 are longitudinally bent and folded for leveling. At the same time, the roller angle adjustment unit 223 can adjust the height of the first roller 221 to adjust the paper tension and reduce the curling caused by the imbalance of paper tension. After longitudinal leveling, the paper passes through the paper discharge roller 23 to change the transmission angle and then enters the arc pressure roller unit 31. The roller angle adjustment unit 223 is composed of a screw and a drive motor. The first roller 221 is installed on the support arms at both ends of the first roller 221 through a bearing. The support arms are provided with threaded holes that match the screws. The two screws are respectively threadedly connected to the two support arms. The drive motor drives the screws to rotate to drive the first roller 221 to rise and fall. The two screws can be driven by two drive motors respectively. Similarly, the two screws can be connected by a belt or chain transmission and driven by a drive motor. The height of the paper feed roller 21 is higher than the height of the second roller 222. Two paper discharge rollers 23 are provided. The longitudinal leveling unit 22 is located between the two paper discharge rollers 23. The height of the two paper discharge rollers 23 is higher than the height of the first roller 221. The height of the paper feed roller 21 is higher than that of the second rotating roller 222, and it plays a role in bearing and changing the transmission angle of the paper transmitted from the unwinding component 1; two paper discharge rollers 23 are arranged, the first paper discharge roller is located between the longitudinal leveling unit 22 and the paper feed roller 21, and the second paper discharge roller is located between the longitudinal leveling unit 22 and the arc pressure roller unit 31. The paper transmitted from the longitudinal leveling unit 22 is transmitted to the second paper discharge roller after the angle is changed by the first paper discharge roller. The height of the supporting surface of the second paper discharge roller is consistent with the height of the paper feed port of the arc pressure roller unit 31, so that the paper can smoothly enter the arc pressure roller unit 31.

[0033] like Figure 1 and Figure 2As shown in the figure, the conveying assembly 4 includes an upper conveying roller unit 41 and a lower conveying roller unit 42 that are arranged parallel to each other vertically, and a second driving unit 43. The upper conveying roller unit 41 and the lower conveying roller unit 42 each include a number of conveying rollers 44, and conveyor belts 45 are equidistantly arranged between the conveying rollers 44. The conveying assembly 4 is the power source for paper conveying. The paper enters the conveying channel between the upper conveying roller unit 41 and the lower conveying roller unit 42 and contacts the conveyor belt 45 sleeved between the conveying rollers 44. The second driving unit 43 drives the conveying rollers 44 to rotate, and then the conveyor belt 45 drives the paper to move, realizing the paper conveying of the entire device. The second driving unit 43 is composed of a driving motor and a reducer. The driving motor is drivingly connected to one of the conveying rollers 44 through the reducer, and the conveying rollers 44 are drivingly connected to each other, and then the driving motor drives the conveying rollers 44 to rotate synchronously.

[0034] As Figure 1 As shown in the figure, an oven 5 is externally covered on the longitudinal leveling assembly 2 and the transverse leveling assembly 3. An inlet 51 and an outlet 52 are respectively provided at one end of the oven 5 close to the longitudinal leveling assembly 2 and the transverse leveling assembly 3. During the storage and transportation of the rolled paper, the moisture content in the paper is uneven due to moisture absorption, and the internal stress is unbalanced, resulting in curling. Therefore, an oven 5 is externally covered on the longitudinal leveling assembly 2 and the transverse leveling assembly 3. During leveling, the paper is baked to release the internal stress during the leveling process, thereby improving the leveling effect of the paper.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In addition, terms such as "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for flattening paper curl, characterized in that, It includes an unwinding component, a longitudinal leveling component, a transverse leveling component, and a conveying component that are sequentially arranged along the paper conveying path; the transverse leveling component includes at least one set of arc-shaped roller units, and each arc-shaped roller unit includes an arc-shaped upper roller, an arc-shaped lower roller arranged parallel to the arc-shaped upper roller up and down, and a first driving unit for driving the arc-shaped upper roller to lift. A plurality of upper rolling wheels are provided on the arc-shaped upper roller, and lower rolling wheels corresponding to the upper rolling wheels one by one are provided on the arc-shaped lower roller.

2. The device for flattening the warped paper according to claim 1, characterized in that, The arc-shaped upper roller includes an upper arc-shaped support member, and the upper rolling wheels are arranged in an array along the arc surface of the upper arc-shaped support member; the arc-shaped lower roller includes a lower arc-shaped support member, and the lower rolling wheels are arranged in an array along the arc surface of the lower arc-shaped support member.

3. The device for flattening the warped paper according to claim 2, characterized in that, The first driving unit includes at least one driving shaft threadedly connected to the upper arc-shaped support member and a first driving member for driving the driving shaft to rotate.

4. The device for flattening the warped paper according to claim 3, characterized in that, Two sets of first driving units are arranged on both sides of the upper arc-shaped support member along the paper conveying direction, and each set of the first driving units includes two driving shafts, and the two driving shafts are drivingly connected to each other.

5. The device for flattening the warped paper according to claim 1, wherein The longitudinal leveling component includes a paper feeding roller, a longitudinal leveling unit, and a paper discharging roller. The longitudinal leveling unit includes two first rollers and a second roller arranged parallel to each other up and down and a roller angle adjusting unit for adjusting the roller angle.

6. The device for flattening the warped paper according to claim 5, characterized in that, The height of the paper feeding roller is higher than the height of the second roller. Two paper discharging rollers are provided, the longitudinal leveling unit is located between the two paper discharging rollers, and the height of the two paper discharging rollers is higher than the height of the first roller.

7. The device for flattening paper curl according to claim 1, characterized in that, The conveying component includes an upper conveying roller unit and a lower conveying roller unit arranged parallel to each other up and down and a second driving unit. The upper conveying roller unit and the lower conveying roller unit respectively include a plurality of conveying rollers, and conveyor belts are equidistantly arranged between the conveying rollers.

8. The device for flattening paper curl according to claim 1, wherein It further includes an oven, the oven covers the longitudinal leveling component and the transverse leveling component, and a paper inlet and a paper outlet are respectively provided at one end of the oven close to the longitudinal leveling component and the transverse leveling component.

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