A release paper anti-curling device

Abstract

The present invention relates to the technical field of conveying devices, and discloses an anti-curling device for release paper, including: a machine shell, inside which a paper feeding channel extending in the left-right direction is enclosed. A plurality of partition plates are arranged at intervals in the left-right direction in the paper feeding channel. The plurality of partition plates sequentially divide the paper feeding channel along its extending direction into a flattening area, a pretreatment area and a drying area, and material passing openings are respectively arranged on the plurality of partition plates; a humidifying assembly, which is arranged in the flattening area, and the humidifying assembly can humidify the air inside the flattening area, and a flattening roller group is arranged in the flattening area; a pretreatment assembly, which is arranged in the pretreatment area, and an air flow gap extending in the left-right direction is arranged inside the pretreatment assembly, and an air flow flowing towards the air flow gap is formed in the pretreatment assembly; a drying assembly, which includes a heating roller arranged in the drying area. The present invention effectively prevents the release paper from curling and improves the forming quality of the release paper by flattening the release paper after rewetting and then performing gradient step-by-step dehumidification.

Description

Technical Field

[0001] The present invention relates to a conveying device, and in particular to a device for preventing curling of release paper. Background Art

[0002] During the production process of release paper, when the humidity of the production environment changes, the fibers absorb moisture and expand or dehydrate and contract, resulting in an imbalance of internal stress in the paper. Different shrinkage rates on both sides will cause structural curling. For example, if the temperature gradient is unreasonable or the front and back sides are unevenly heated during the drying process of release paper, the water evaporation rates on both sides of the paper sheet will be inconsistent. Currently, the drying of release paper is usually carried out by unilateral drying. During this process, one side of the release paper quickly loses water and shrinks, while the other side still maintains a high humidity, forming an internal stress difference and resulting in overall curling. Therefore, there is an urgent need for a device that can reduce the curling phenomenon of release paper. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for preventing curling of release paper to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution of the present invention to solve its technical problems is as follows:

[0005] A device for preventing curling of release paper, comprising: a machine shell, inside which a paper feeding channel extending in the left - right direction is formed by surrounding. A plurality of partition plates are arranged at intervals in the left - right direction in the paper feeding channel. The plurality of partition plates sequentially divide the paper feeding channel along its extension direction into a flattening area, a pretreatment area and a drying area. Over - material openings are respectively arranged on the plurality of partition plates; a humidifying component, which is arranged in the flattening area, the humidifying component can humidify the air inside the flattening area, and a flattening roller group is arranged in the flattening area; a pretreatment component, which is arranged in the pretreatment area, an air flow gap extending in the left - right direction is arranged inside the pretreatment component, and an air flow flowing towards the air flow gap is formed inside the pretreatment component; a drying component, which includes a heating roller arranged in the drying area.

[0006] The technical solution has at least the following beneficial effects: The release paper is fed into the casing and passes through the material passing openings on multiple partitions in sequence, so that the release paper passes through the flattening area, the pretreatment area and the drying area in sequence. When the release paper passes through the flattening area, the humidifying component is used to humidify the air inside the flattening area, so that the upper and lower sides of the release paper are humidified respectively, so as to reduce the internal stress difference of the release paper, and the release paper is flattened by the flattening roller group in the flattening area, so that the release paper is fully unfolded; When the release paper enters the pretreatment area, the release paper is located in the air flow gap, and the air flow flowing into the air flow gap in the pretreatment component can blow dry the upper and lower sides of the release paper respectively, and slowly reduce the humidity of the release paper; When the release paper enters the drying area, the release paper passes through the heating roller, and the heating roller is used to heat up the release paper, so as to realize the drying of the release paper and accelerate the dehumidification speed of the release paper. In this way, after the release paper is moistened and flattened, and then gradually dehumidified in a gradient manner, the curling of the release paper is effectively prevented, and the forming quality of the release paper is improved.

[0007] As a further improvement of the above technical solution, the flattening roller group includes bow-shaped rollers and straight rollers. A plurality of bow-shaped rollers are arranged at intervals in the left-right direction, and the bow amounts of the plurality of bow-shaped rollers gradually decrease in the direction close to the pretreatment area. The straight roller is located on the side closer to the pretreatment area relative to the plurality of bow-shaped rollers. The release paper is fed through the bow-shaped rollers, and the bow-shaped rollers unfold the release paper to both sides. Since the bow amounts of the plurality of bow-shaped rollers gradually decrease in the direction close to the pretreatment area, the external force pulling the release paper to both sides can be gradually reduced. Finally, the release paper passes through the straight roller and then is conveyed into the pretreatment area. In this way, the release paper is fully extended to both sides in the flattening area, ensuring its flatness.

[0008] As a further improvement of the above technical solution, the humidifying component includes an upper water supply pipe, upper branch pipes, upper spray heads, a lower water supply pipe, lower branch pipes and lower spray heads. A plurality of upper branch pipes are arranged at intervals in the left-right direction at a position above the flattening roller group in the flattening area. Each upper branch pipe is provided with a plurality of upper spray heads. The upper water supply pipe is communicated with the plurality of upper branch pipes. A plurality of lower branch pipes are arranged at intervals in the left-right direction at a position below the flattening roller group in the flattening area. Each lower branch pipe is provided with a plurality of lower spray heads. The lower water supply pipe is communicated with the plurality of lower branch pipes. Above the flattening roller group, the upper water supply pipe is connected to an external water supply pipeline, and humidifying water is conveyed to the plurality of upper branch pipes through the upper water supply pipe, and then the upper space of the flattening area is spray-humidified by the plurality of upper spray heads. Similarly, below the flattening roller group, after the lower water supply pipe is connected to an external water supply pipeline, humidifying water is conveyed to the plurality of lower branch pipes through the lower water supply pipe, and then the lower space of the flattening area is spray-humidified by the plurality of lower spray heads. In this way, the upper and lower sides of the release paper are evenly humidified in the flattening area, reducing the phenomenon of internal stress imbalance inside the release paper.

[0009] As a further improvement of the above technical solution, the pretreatment component includes an upper air supply group and a lower air supply group. The upper air supply group includes a fan, an air supply pipe and a air distribution box. The air distribution box is arranged at a position above the air flow gap in the pretreatment area. A plurality of air distribution chambers are formed by partitioning the air distribution box in the left-right direction. A plurality of air outlets respectively communicating with the air distribution chambers are arranged on the bottom side of the air distribution box. A plurality of air inlets respectively communicating with the air distribution chambers are arranged on the top side of the air distribution box. The air supply pipes are respectively connected to the plurality of air inlets. The air outlet end of the fan is connected to the air supply pipe. The structure of the upper air supply group and the structure of the lower air supply group are symmetrically arranged in the up-down direction. Exhaust holes are respectively arranged at positions on both sides of the pretreatment area facing the air flow gap. In the upper air supply group, the fan sends air to the air supply pipe, and the air flow is respectively input into a plurality of air distribution chambers of the air distribution box through the air supply pipe, and then is transported to the air flow gap from the air outlets on the bottom sides of the plurality of air distribution chambers to dry the position above the release paper. Similarly, since the structure of the upper air supply group and the structure of the lower air supply group are symmetrically arranged up and down, the air flow blown out by the lower air supply group dries the position below the release paper in the air flow gap. Since the exhaust holes are located on the side walls of the pretreatment area, the air flow blown into the air flow gap is dispersed to both sides of the pretreatment area, and then the air flow in the pretreatment area is discharged from the exhaust holes. Similarly, the lower air supply group sends air to the air flow gap in the same way as the upper air supply group and is discharged from the exhaust holes along both sides of the release paper. In this way, air flows blowing towards the surface of the release paper and flowing to both sides are formed at positions above and below the release paper in the air flow gap of the pretreatment area. The release paper can be straightened by the air flow. In particular, the exhaust holes on both sides of the release paper can form negative pressure, making the release paper straighten to both sides. And the air flow can evenly cover the surface of the release paper, reducing the phenomenon of internal stress imbalance caused by too fast local drying speed of the release paper and improving the drying effect of the release paper.

[0010] As a further improvement of the above technical solution, an impeller is respectively arranged in each air distribution chamber. A plurality of blades are respectively arranged on the outer periphery of the impeller. The plurality of blades respectively extend in the front-rear direction. The air flow blown into the air distribution chamber will be blocked by the blades, causing the air flow to disperse to the front and rear sides. And the whole impeller rotates after the blades are stressed, and the air flow is sent out when rotating to the air outlet. In this way, the air flow entering the air distribution chamber from the air inlet can be shunted in the front-rear direction and then sent out from the air outlet, making the air flow blowing towards the surface of the release paper smoother and having a wider coverage range, and preventing the release paper from being pulled and deformed.

[0011] As a further improvement of the above technical solution, in the plurality of air distribution boxes, the air inlets and the air outlets are staggered with each other in the up-down direction. The air flow entering the air distribution box from the air inlet can be evenly filled in the area surrounded by two adjacent blades and the air distribution box, and then flows to the position facing the air outlet, improving the flow-blocking and dispersing effect of the blades on the air flow.

[0012] As a further improvement of the above technical solution, air guide plates are respectively connected to one sides of the plurality of air outlets close to the flattening area, and each air guide plate extends obliquely downward in the direction close to the drying assembly. The air guide plates can guide the air flow blown out from the air outlets, so that the air flow is closer to the surface of the release paper, thereby further reducing the impact of the air flow on the release paper and improving the drying effect on the release paper.

[0013] As a further improvement of the above technical solution, the drying assembly includes an upper air extraction pipe and a lower air extraction pipe. A plurality of upper air extraction ports are arranged at intervals in the left-right direction on the top side of the drying area. The upper air extraction pipe is communicated with the plurality of upper air extraction ports, and the upper air extraction pipe is connected to the air inlet end of the fan. A plurality of lower air extraction ports are arranged at intervals in the left-right direction on the bottom side of the drying area. The lower air extraction pipe is communicated with the plurality of lower air extraction ports, and the lower air extraction pipe is connected to the lower air supply group. In the drying area, the release paper is further heated and dried by the heating roller. At this time, the high-temperature moisture in the drying area is directly extracted to the pretreatment area through the upper air extraction pipe and the lower air extraction pipe, so that the air flow entering the air flow gap is high-temperature moisture. In this way, the release paper located in the pretreatment area can be preheated and the temperature can be increased, and the rate of directly dehumidifying the release paper by air drying in the air flow gap is skillfully reduced, so that the release paper in the pretreatment area is preheated and preliminarily dehumidified, and then enters the drying area to be heated and the temperature is increased and dehumidified by negative pressure air extraction, further improving the gradient dehumidification effect on the release paper.

[0014] As a further improvement of the above technical solution, pressing edge groups are respectively arranged at positions on the front and rear sides of the air distribution box in the pretreatment area. The pressing edge group includes belt conveyors arranged on the upper and lower sides of the air flow gap. When the release paper enters the pretreatment area, there are upper and lower belt conveyors on both sides of the release paper, and the side edges of the release paper are pressed by the upper and lower belt conveyors. In this way, through the pressing and positioning of the two side edges of the release paper, the flatness of the release paper when passing through the air flow gap can be improved, and the phenomenon of curling of its side edges can be effectively prevented.

[0015] As a further improvement of the above technical solution, taking two heating rollers arranged at intervals in the up-down direction as one heating unit, a plurality of heating units are arranged at intervals in the left-right direction. When the release paper enters the drying area, it is heated and conveyed by the heating unit. In each heating unit, the release paper is pressed on both the upper and lower sides, and the upper and lower sides of the release paper are heated to improve the heating and drying effect on the release paper. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the accompanying drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, rather than all embodiments. Without creative efforts, those skilled in the art can also obtain other design solutions and drawings based on these drawings.

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 is Figure 1 a partially enlarged schematic view of A of

[0019] In the drawings: 1 - housing, 11 - partition board, 12 - flattening area, 13 - pretreatment area, 131 - exhaust hole, 14 - drying area, 2 - heating roller, 21 - upper exhaust duct, 22 - lower exhaust duct, 31 - bow-shaped roller, 32 - straight roller, 41 - upper water supply pipe, 42 - upper branch pipe, 43 - upper spray head, 44 - lower water supply pipe, 45 - lower branch pipe, 46 - lower spray head, 51 - fan, 52 - air supply duct, 53 - air distribution box, 54 - impeller, 541 - blade, 542 - air guide plate, 55 - belt conveyor, 6 - lower air supply group. Specific embodiments

[0020] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts all fall within the scope of protection of the present invention. In addition, all the connection relationships mentioned in the text do not refer only to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the present invention can be combined with each other without conflict.

[0021] Refer to Figure 1, A release paper anti - curling device, comprising: a machine housing 1, inside which a paper feeding channel extending in the left - right direction is enclosed. A plurality of partition plates 11 are arranged at intervals in the left - right direction in the paper feeding channel. The plurality of partition plates 11 sequentially divide the paper feeding channel along its extending direction into a flattening area 12, a pretreatment area 13 and a drying area 14, and material passing openings are respectively arranged on the plurality of partition plates 11; a humidifying component, which is arranged in the flattening area 12 and can humidify the air inside the flattening area 12. A flattening roller group is arranged in the flattening area 12; a pretreatment component, which is arranged in the pretreatment area 13, and an air flow gap extending in the left - right direction is arranged inside the pretreatment component. An air flow flowing towards the air flow gap is formed inside the pretreatment component; a drying component, which includes a heating roller 2 arranged in the drying area 14.

[0022] After the release paper is produced and formed, it is sent into the release paper anti - curling device. Specifically, the release paper is led into the machine housing 1. Through the material passing openings on the plurality of partition plates 11, the release paper sequentially passes through the flattening area 12, the pretreatment area 13 and the drying area 14. When the release paper passes through the flattening area 12, the humidifying component humidifies the air inside the flattening area 12, so that the upper and lower sides of the release paper are respectively humidified to reduce the internal stress difference of the release paper. And the release paper is flattened by the flattening roller group in the flattening area 12, so that the release paper is fully unfolded; when the release paper enters the pretreatment area 13, the release paper is located in the air flow gap, and the air flow flowing towards the air flow gap in the pretreatment component can blow dry the upper and lower sides of the release paper respectively, slowly reducing the humidity of the release paper; when the release paper enters the drying area 14, the release paper passes through the heating roller 2, and the heating roller 2 is used to heat up the release paper, so as to realize the drying of the release paper and accelerate the speed of dehumidifying the release paper. In this way, by flattening the release paper after re - humidification and then performing gradient - type step - by - step dehumidification, the curling of the release paper is effectively prevented, and the forming quality of the release paper is improved.

[0023] As a further improvement of the above - mentioned technical solution, the flattening roller group includes arcuate rollers 31 and straight rollers 32. A plurality of arcuate rollers 31 are arranged at intervals in the left - right direction, and the arcuate amounts of the plurality of arcuate rollers 31 sequentially decrease along the direction close to the pretreatment area 13. The straight roller 32 is located on the side closer to the pretreatment area 13 relative to the plurality of arcuate rollers 31. The release paper is led to pass through the arcuate rollers 31, and the arcuate rollers 31 unfold the release paper to both sides. Since the arcuate amounts of the plurality of arcuate rollers 31 sequentially decrease along the direction close to the pretreatment area 13, the external force pulling the release paper to both sides can be gradually reduced. Finally, after the release paper passes through the straight roller 32, it is then conveyed into the pretreatment area 13. In this way, the release paper is fully extended to both sides in the flattening area 12, ensuring its flatness.

[0024] The humidifying component is mainly used for rewetting the release paper entering the flattening area 12. Specifically, the humidifying component includes an upper water supply pipe 41, upper branch pipes 42, upper spray heads 43, a lower water supply pipe 44, lower branch pipes 45 and lower spray heads 46. The upper branch pipes 42 are arranged at intervals in the left-right direction at a position above the flattening roller group in the flattening area 12. A plurality of the upper spray heads 43 are respectively arranged on each of the upper branch pipes 42. The upper water supply pipe 41 is communicated with the plurality of upper branch pipes 42. The lower branch pipes 45 are arranged at intervals in the left-right direction at a position below the flattening roller group in the flattening area 12. A plurality of the lower spray heads 46 are respectively arranged on each of the lower branch pipes 45. The lower water supply pipe 44 is communicated with the plurality of lower branch pipes 45. Above the flattening roller group, the upper water supply pipe 41 is connected to an external water supply pipeline, and humidifying water is conveyed to the plurality of upper branch pipes 42 through the upper water supply pipe 41, and then the space above the flattening area 12 is spray humidified by the plurality of upper spray heads 43. Similarly, below the flattening roller group, after the lower water supply pipe 44 is connected to an external water supply pipeline, humidifying water is conveyed to the plurality of lower branch pipes 45 through the lower water supply pipe 44, and then the space below the flattening area 12 is spray humidified by the plurality of lower spray heads 46. In this way, the upper and lower sides of the release paper are evenly humidified in the flattening area 12, reducing the phenomenon of internal stress imbalance inside the release paper.

[0025] The pretreatment component can blow-dry the upper and lower sides of the release paper and at the same time at multiple positions along the length direction of the release paper. Specifically, as Figure 2As shown in the figure, the pretreatment component includes an upper air supply group and a lower air supply group 6. The upper air supply group includes a fan 51, an air supply pipe 52, and a distribution box 53. The distribution box 53 is arranged in the pretreatment area 13 at a position above the air flow gap. A plurality of distribution chambers are formed in the distribution box 53 by partitioning in the left-right direction. A plurality of air outlets respectively communicating with the distribution chambers are arranged on the bottom side of the distribution box 53, and a plurality of air inlets respectively communicating with the distribution chambers are arranged on the top side of the distribution box 53. The air supply pipes 52 are respectively connected to the plurality of air inlets, and the air outlet end of the fan 51 is connected to the air supply pipe 52. The structure of the upper air supply group is symmetrically arranged with the structure of the lower air supply group 6 in the up-down direction. Exhaust holes 131 are respectively arranged at positions on both sides of the pretreatment area 13 facing the air flow gap. In the upper air supply group, the fan 51 sends air to the air supply pipe 52, and the air flow is respectively input into a plurality of distribution chambers of the distribution box 53 through the air supply pipe 52, and then is sent to the air flow gap from the air outlets at the bottom sides of the plurality of distribution chambers to dry the position above the release paper. Similarly, because the structure of the upper air supply group is symmetrically arranged with the structure of the lower air supply group 6 in the up-down direction, the air flow blown out by the lower air supply group 6 dries the position below the release paper in the air flow gap. Since the exhaust holes 131 are located on the side walls of the pretreatment area 13, the air flow blown into the air flow gap is dispersed to both sides of the pretreatment area 13, and then the air flow in the pretreatment area 13 is discharged from the exhaust holes 131. Similarly, the lower air supply group 6 sends air to the air flow gap in the same way as the upper air supply group and is discharged from the exhaust holes 131 along both sides of the release paper. In this way, air flows blowing towards the surface of the release paper and flowing to both sides are formed at positions above and below the release paper in the air flow gap of the pretreatment area 13. The release paper can be straightened by the air flow. In particular, the exhaust holes 131 located on both sides of the release paper can form a negative pressure, making the release paper straighten to both sides. And the air flow can evenly cover the surface of the release paper, reducing the phenomenon of internal stress imbalance caused by too fast local drying speed of the release paper and improving the drying effect of the release paper.

[0026] When the air flow directly blows out from the air outlet to the surface of the release paper, if the air flow impact force is large, it is easy to cause the release paper to deform. In order to reduce the air pressure blown out from the air outlet, in this embodiment, an impeller 54 is respectively arranged in each distribution chamber. A plurality of blades 541 are respectively arranged on the outer periphery of the impeller 54, and the plurality of blades 541 respectively extend in the front-rear direction. The air flow blown into the distribution chamber will be blocked by the blades 541, so that the air flow is dispersed to the front and rear sides, and the entire impeller 54 rotates after the blades 541 are stressed, and the air flow is sent out when rotating to the air outlet. In this way, the air flow entering the distribution chamber from the air inlet can be shunted in the front-rear direction and then sent out from the air outlet, making the air flow blowing to the surface of the release paper smoother and having a wider coverage range, and preventing the release paper from being pulled and deformed.

[0027] Furthermore, among the multiple air distribution boxes 53, the air inlets and the air outlets are staggered from each other in the up-down direction. The air flow entering the air distribution box 53 from the air inlet can be evenly filled in the area formed between two adjacent blades 541 and the air distribution box 53, and then flow to the position directly opposite to the air outlet, improving the flow blocking and dispersion effect of the blades 541 on the air flow.

[0028] Furthermore, guide vanes 542 are respectively connected to one side of the multiple air outlets close to the flattening area 12, and each guide vane 542 extends obliquely downward in the direction close to the drying assembly. The guide vanes 542 can guide the air flow blown out from the air outlets, making the outlet air flow closer to the surface of the release paper. In this way, the impact of the air flow on the release paper can be further reduced, and the drying effect on the release paper can be improved.

[0029] In the pretreatment area 13, the fan 51 can directly draw air from the outside and send it into the air supply pipe 52. In order to further improve the gradient heating and dehumidification effect on the release paper, in this embodiment, the drying assembly includes an upper air extraction pipe 21 and a lower air extraction pipe 22. A plurality of upper air extraction ports are arranged at intervals in the left-right direction on the top side of the drying area 14. The upper air extraction pipe 21 is communicated with the plurality of upper air extraction ports. The upper air extraction pipe 21 is connected to the air inlet end of the fan 51. A plurality of lower air extraction ports are arranged at intervals in the left-right direction on the bottom side of the drying area 14. The lower air extraction pipe 22 is communicated with the plurality of lower air extraction ports. The lower air extraction pipe 22 is connected to the lower air supply group 6. In the drying area 14, the release paper is further heated and dried by the heating roller 2. At this time, the high-temperature moisture in the drying area 14 is directly extracted into the pretreatment area 13 through the upper air extraction pipe 21 and the lower air extraction pipe 22, so that the air flow entering the air flow gap is high-temperature moisture. In this way, the release paper located in the pretreatment area 13 can be preheated and the rate of directly dehumidifying the release paper by air drying in the air flow gap can be cleverly reduced, so that the release paper in the pretreatment area 13 is preheated and preliminarily dehumidified, and then enters the drying area 14 for heating and negative pressure air extraction and dehumidification, further improving the gradient dehumidification effect on the release paper.

[0030] In the above embodiments, the release paper located in the pretreatment area 13 can be completely suspended in the air flow gap, and is tensioned by the rollers in the flattening area 12 and the drying area 14, and the upper air supply group and the lower air supply group 6 stabilize the upper and lower sides of the release paper. In order to further improve the anti-curling effect of the release paper, in this embodiment, pressing edge groups are respectively arranged at the positions on the front and rear sides of the air distribution box 53 in the pretreatment area 13, and the pressing edge group includes belt conveyors 55 arranged on the upper and lower sides of the air flow gap. When the release paper enters the pretreatment area 13, there are two belt conveyors 55 on the upper and lower sides of the release paper respectively, and the side edges of the release paper are pressed by the two belt conveyors 55. Thus, through the pressing and positioning of the two side edges of the release paper, the flatness of the release paper when passing through the air flow gap can be improved, and the curling phenomenon of its side edges can be effectively prevented.

[0031] The heating roller 2 is a roller body with heating elements such as electric heating wires or heating films installed inside. It can be arranged in only one row in a straight line direction in the drying area 14. In order to improve the drying effect on the upper and lower sides of the release paper simultaneously, in this embodiment, two heating rollers 2 arranged at intervals in the up and down direction are taken as one heating unit, and a plurality of heating units are arranged at intervals in the left and right direction. When the release paper enters the drying area 14, it is heated and conveyed by the heating unit. In each heating unit, the release paper is pressed on its upper and lower sides respectively, and the upper and lower sides of the release paper are heated to improve the heating and drying effect on the release paper.

[0032] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A release paper anti-curling device, characterized in that: include: A casing (1) is provided with a paper feeding passage extending in the left-right direction, a plurality of partitions (11) are arranged in the paper feeding passage in the left-right direction, the plurality of partitions (11) sequentially divide the paper feeding passage along the extending direction thereof into a flattening area (12), a pretreatment area (13) and a drying area (14), and the plurality of partitions (11) are respectively provided with a feeding port; A humidifying component is arranged in the flattening area (12), and the humidifying component can humidify the air inside the flattening area (12), so that the upper and lower sides of the release paper are humidified respectively. A flattening roller group is arranged in the flattening area (12), and the release paper is flattened by the flattening roller group in the flattening area; A pretreatment component is arranged in the pretreatment area (13), an airflow gap extending in the left-right direction is arranged inside the pretreatment component, and an airflow flowing toward the airflow gap is formed in the pretreatment component; the airflow flowing toward the airflow gap in the pretreatment component can dry the upper and lower sides of the release paper respectively, and slowly reduce the humidity of the release paper; A drying component, comprising a heating roller (2) arranged in the drying area (14), wherein the release paper passes through the heating roller and the heating roller is used to heat the release paper, thereby achieving drying of the release paper; By rehumidifying the release paper and flattening it, and then gradually dehumidifying it in a gradient manner, the curling of the release paper can be effectively prevented.

2. The release paper anti-curling device according to claim 1, characterized in that: The flattening roller group comprises a bow-shaped roller (31) and a straight roller (32), wherein a plurality of the bow-shaped rollers (31) are arranged at intervals along the left-right direction, and the bow amounts of the plurality of bow-shaped rollers (31) are successively reduced in a direction approaching the pretreatment area (13), and the straight roller (32) is located on a side closer to the pretreatment area (13) relative to the plurality of bow-shaped rollers (31).

3. The release paper anti-curling device according to claim 1, characterized in that: The humidifying assembly comprises an upper water supply pipe (41), an upper branch pipe (42), an upper spray head (43), a lower water supply pipe (44), a lower branch pipe (45) and a lower spray head (46); a plurality of the upper branch pipes (42) are arranged at intervals along the left-right direction at a position above the flattening roller group in the flattening area (12); each of the upper branch pipes (42) is provided with a plurality of the upper spray heads (43); the upper water supply pipe (41) and the plurality of the upper branch pipes (42) are communicated with each other; a plurality of the lower branch pipes (45) are arranged at intervals along the left-right direction at a position below the flattening roller group in the flattening area (12); each of the lower branch pipes (45) is provided with a plurality of the lower spray heads (46); and the lower water supply pipe (44) and the plurality of the lower branch pipes (45) are communicated with each other.

4. The release paper anti-curling device according to claim 1, characterized in that: The pretreatment component comprises an upper air supply group and a lower air supply group (6), the upper air supply group comprises a fan (51), an air supply pipe (52) and an air distribution box (53), the air distribution box (53) being arranged at a position above the air flow gap in the pretreatment area (13), the air distribution box (53) being divided into a plurality of air distribution chambers along the left-right direction, the bottom side of the air distribution box (53) being provided with a plurality of air outlets respectively connected to the air distribution chambers, the top side of the air distribution box (53) being provided with a plurality of air inlets respectively connected to the air distribution chambers, the air supply pipe (52) being respectively connected to the plurality of air inlets, the air outlet end of the fan (51) being connected to the air supply pipe (52), the structure of the upper air supply group and the structure of the lower air supply group (6) being arranged symmetrically along the upper-lower direction, and exhaust holes (131) being respectively arranged at positions opposite to the air flow gap on both sides of the pretreatment area (13).

5. The release paper anti-curling device according to claim 4, characterized in that: An impeller (54) is provided in each of the air distribution chambers, and a plurality of blades (541) are provided on the outer periphery of the impeller (54), and the plurality of blades (541) extend in the front-rear direction.

6. The release paper anti-curling device according to claim 4, characterized in that: In the plurality of air distribution boxes (53), the air inlets and the air outlets are staggered with each other in the up-down direction.

7. The release paper anti-curling device according to claim 4, characterized in that: A plurality of air outlets are respectively connected to an air guide plate (542) on one side close to the flattening area (12), and each of the air guide plates (542) extends downwardly and obliquely towards a direction close to the drying component.

8. The release paper anti-curling device according to claim 4, characterized in that: The drying component comprises an upper exhaust duct (21) and a lower exhaust duct (22); a plurality of upper exhaust ports are arranged at intervals along the left-right direction on the top side of the drying area (14); the upper exhaust duct (21) is connected to the plurality of upper exhaust ports; the upper exhaust duct (21) is connected to the air inlet end of the fan (51); a plurality of lower exhaust ports are arranged at intervals along the left-right direction on the bottom side of the drying area (14); the lower exhaust duct (22) is connected to the plurality of lower exhaust ports; and the lower exhaust duct (22) is connected to the lower air supply group (6).

9. The release paper anti-curling device according to claim 4, characterized in that: Edge pressing groups are respectively arranged at positions on both sides of the front and rear of the air distribution box (53) in the pretreatment area (13), and the edge pressing groups include belt conveyors (55) arranged on both sides of the upper and lower sides of the air flow gap.

10. The release paper anti-curling device according to claim 1, characterized in that: Two heating rollers (2) arranged at intervals in the up-down direction constitute a heating unit, and a plurality of heating units are arranged at intervals in the left-right direction.

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