Multifunctional intelligent drying device for corrugated board production

Abstract

The invention relates to the related technical field of corrugated board production, and discloses a multifunctional intelligent drying device for corrugated board production, which comprises a board feeding and conveying device, a drying and conveying device, a flattening and cooling device and a board discharging and conveying device, the drying and conveying device is connected with the flattening and cooling device, the flattening and cooling device is connected with the plate discharging and conveying device, and the drying and conveying device comprises a protection frame; according to the paperboard flattening device, the paperboard can be flattened while being cooled, the size change of the paperboard can be effectively controlled, shrinkage or expansion caused by temperature difference is reduced, it is guaranteed that the size of the produced paperboard is accurate and stable, the paperboard flattening device is particularly important for subsequent automatic cutting, folding and other procedures, material waste can be reduced, the production precision can be improved, and the production cost is reduced. And the integrated flattening and cooling design can reduce the steps of the production process, simplify the operation process and shorten the processing period, so that the output speed and efficiency of the whole production line are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to the production of corrugated paperboards, and more specifically, particularly relates to a multifunctional intelligent drying device for the production of corrugated paperboards. Background Art

[0002] During the production of corrugated cardboard, the base paper contains a certain amount of moisture, and after the corrugated forming, bonding and other processes, the inside and surface of the cardboard may contain a lot of moisture. If it is directly sent to the next process or stored, the excessive moisture will cause the cardboard to deform, reduce its strength, and may cause problems such as mildew. Therefore, drying becomes a key step to ensure the stability of the cardboard quality. However, the production of corrugated cardboard in the prior art has the following defects: In the prior art, corrugated cardboard production usually adopts simple drying by transport drying. Simple drying will lead to the design of drying system not being optimized. For example, uneven hot air distribution or stacking and tilting of cardboard during transportation may lead to uneven drying of cardboard, affecting product quality, such as partial over-drying, bending or strength reduction. In the prior art, corrugated cardboard production usually adopts self-cooling cardboard, and the effect of self-cooling is easily affected by the ambient temperature and humidity. Especially in high temperature and high humidity seasons or regions, the cooling effect will be greatly reduced, and it is difficult to ensure that the cardboard reaches the ideal moisture content and hardness, which may affect the subsequent processing performance and the quality stability of the final product. In the prior art, during the production and drying process of corrugated cardboard, the evaporation of moisture in the cardboard will cause the material to shrink. If there is no timely flattening measure, the cardboard will easily bend, wavy, and warp at both ends, affecting its flatness and appearance quality.

[0003] Therefore, in view of this, the existing structure and defects are studied and improved, and a multifunctional intelligent drying device for corrugated cardboard production is provided, in order to achieve a more practical and valuable purpose. Summary of the invention

[0004] The present invention provides a multifunctional intelligent drying device for producing corrugated paperboard, which is used to overcome the above-mentioned defects in the prior art.

[0005] The purpose and effect of the multifunctional intelligent drying device for corrugated board production of the present invention are achieved by the following specific technical means: A multifunctional intelligent drying device for corrugated board production, comprising a board feeding conveying device, a drying transmission device, a flattening cooling device and a board discharging conveying device, wherein the board feeding conveying device is connected to the drying transmission device, the drying transmission device is connected to the flattening cooling device, the flattening cooling device is connected to the board discharging conveying device, the drying transmission device comprises a protection frame, the protection frame has a warm air cavity, a middle fixing block is symmetrically installed on the inner wall of the middle part of the warm air cavity, a plurality of middle-layer rollers arranged transversely at intervals are arranged inside the warm air cavity, and the warm air cavity is divided into upper and lower cavities by the transversely arranged middle-layer rollers, which are respectively a first cavity and a second cavity. A ventilation gap is formed between two adjacent middle-layer rollers, and the middle-layer roller itself has a plurality of ventilation holes. A pneumatic drying device is arranged in both the first and second cavities. The pneumatic drying device rotates in the first cavity to generate a first clockwise circulating airflow, and the pneumatic drying device rotates in the second cavity to generate a second counterclockwise circulating airflow. A differential controller is also arranged on the outer wall of the protection frame. The differential controller controls the speed difference between the pneumatic drying device in the first cavity and the pneumatic drying device in the second cavity, so as to control the flow rate difference between the upper side and the lower layer of the corrugated cardboard to utilize the pressure difference for dehumidification.

[0006] A further technical solution is that the pneumatic drying device includes a rotating air pipe and an eighth conveyor belt arranged on the outside of the rotating air pipe, a plurality of fanning plates are arranged in an array on the outside of the eighth conveyor belt, the rotating air pipe is rotatably installed on the inner wall of the protection frame, the protection frame is connected with a first differential motor and a second differential motor, the first differential motor is connected to the rotating air pipe on the upper side, the second differential motor is connected to the rotating air pipe on the lower side, and the protection frame is also provided with the differential controller for controlling the speed difference between the first differential motor and the second differential motor.

[0007] A further technical solution is that the flattening cooling device includes a cold air fixing frame, a heater is fixedly installed inside the cold air fixing frame, a push plate is fixedly connected to the output end of the heater, a cold air side end block is symmetrically connected to the side end of the push plate, a plurality of fourth rotating shafts are rotatably installed on the inner surface of the cold air side end block, a fifth conveyor belt is rotatably installed on the upper surface of the fourth rotating shaft, a lower conveyor plate is provided below the fifth conveyor belt, and the lower conveyor plate is located on the right side of the middle fixed block.

[0008] A further technical solution is that the plate feeding conveying device includes a left side fixed frame and a right side fixed frame, a first rotating shaft is rotatably installed between the left side fixed frame and the right side fixed frame, the end of the first rotating shaft penetrates the right side fixed frame and is fixedly connected with a first rotating sleeve, the outer end surface of the first rotating sleeve is fixedly connected with a driving motor, a plurality of driving rods are arranged in an array on the right side of the first rotating shaft, the outer end of the driving rod is fixedly connected with a side end fixing plate, the driving rod provided at the right end is rotatably installed with a first conveyor belt on the surface of the first rotating shaft, and the first conveyor belt and the surface of the first rotating shaft are both provided with conveying rollers.

[0009] A further technical solution is that the left-side fixing frame and the right-side fixing frame are fixedly connected with a first oblique fixing plate at their right ends, a plurality of second rotating shafts are rotatably installed between the first oblique fixing plates, a second rotating roller is rotatably installed on the surface of the second rotating shaft, an inner fixing plate and an outer fixing plate are fixedly installed on the right end surface of the second rotating shaft, a second conveyor belt is sleeved between the outer fixing plate and the inner fixing plate, and the left section of the second conveyor belt is sleeved on the surface of the driving rod.

[0010] According to a further technical solution, the middle roller of the array is covered with a sixth conveyor belt to drive the sixth conveyor belt to rotate, and the sixth conveyor belt is covered on the second rotating shaft to drive the second rotating shaft to rotate.

[0011] A further technical solution is that a heater is fixedly installed on the outer surface of the protection frame, a first exhaust groove is fixedly connected to the right output end of the heater, a sliding plate is fixedly connected to the lower output end of the heater, a second exhaust groove is fixedly connected to the lower end of the sliding plate, and the second exhaust groove is connected to the first exhaust groove and the inside of the warm air chamber.

[0012] A further technical solution is that the outer end of the cold air fixing frame is fixedly connected with an air supply pipe at the output end of the cold air blower, the lower end of the air supply pipe is fixedly connected with a side panel, the side panel is connected with the interior of the cold air fixing frame, and a plurality of ventilation holes are arrayed on the opposite surfaces of the cold air fixing frame and the side panel.

[0013] A further technical solution is that a conveying trough plate is fixedly installed above the symmetrically arranged middle fixed block, a conveying inner trough is provided between the conveying trough plate and the middle fixed block, an outer guide plate is fixedly installed on the left side of the protection frame, and a support frame is fixedly installed on the lower surface of the inlet conveying device and the outlet conveying device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses a multifunctional intelligent drying device for producing corrugated cardboard, which adopts a rotating drying air pipe and is provided with a differential speed controller at the outer end of the drying air pipe, so that the high pressure of the first chamber can exert an extrusion dehumidification effect on the low pressure of the second chamber, and this effect can accelerate the process of discharging moisture from the material, because the extrusion effect of the high pressure area on the low pressure area increases the exchange rate between the wet air and the drying medium (such as hot air), thereby accelerating the evaporation rate of the water and improving the drying efficiency. The rotating drying air pipe can make the drying medium more evenly distributed around the material, and with the differential speed control, it can ensure that the temperature and humidity distribution during the drying process are more even, reduce the local over-drying or under-drying phenomenon, improve the drying quality, and accelerate the dehumidification process by accurately controlling the air pressure difference. Compared with traditional constant pressure drying, it can more efficiently utilize energy and avoid unnecessary energy consumption, thereby achieving the purpose of energy saving and emission reduction. Moreover, compared with high temperature and long time drying, the rapid and uniform dehumidification reduces the quality degradation or damage of the material caused by excessive heating, and is particularly suitable for heat-sensitive materials, which is conducive to maintaining their original color, nutrients and structural integrity.

[0015] The invention discloses a multifunctional intelligent drying device for producing corrugated paperboard, which uses a fan to cool the paperboard that has just been dried at high temperature, and can also cool the inside of the corrugated paper by air cooling. After high temperature drying, the inside of the paperboard may still contain a certain amount of residual heat. If the heat is not dissipated in time, it is easy to cause the paperboard to expand or warp. By quickly reducing the temperature of the side of the paperboard through air cooling, the paperboard can be quickly restored to a stable state, reduce shape deformation, maintain good flatness and dimensional stability, and rapid cooling can shorten the waiting time of the paperboard from drying to the next process (such as cutting, printing, etc.), accelerate the entire production process, and improve the turnover rate and overall efficiency of the production line. Moreover, the corrugated paperboard is formed by bonding the surface paper, the core paper and the corrugated base paper, and high temperature drying may have a certain effect on the bonding performance of the glue. The cooling process helps to stabilize the bonding state of the glue, enhance the bonding force between the paperboard layers, and improve the burst resistance and compressive strength of the finished product. Compared with natural cooling, active cooling using a fan can remove the heat on the paperboard more quickly and reduce energy consumption. Although the operation of the fan consumes electricity, it can generally achieve the goal of energy conservation and cost reduction by shortening the production cycle and reducing the scrap rate.

[0016] The invention discloses a multifunctional intelligent drying device for producing corrugated cardboard, which is provided with a flattening device during cooling and temperature reduction, and after high-temperature drying, the cardboard may be locally deformed due to uneven evaporation of water or thermal expansion and contraction effects. The synchronous flattening operation can correct these deformations in real time during the cooling and shaping process of the cardboard, ensuring that the surface of the final product is flat and smooth, meeting the requirements of high-quality packaging or printing, and the uniform pressure helps to further promote the close fit of the internal structure of the cardboard, including the bonding strength between the surface paper and the core paper, thereby improving the overall physical properties of the cardboard, such as edge strength, flat compression strength and burst resistance, making it more suitable for carrying heavy objects or performing complex processing, and the flattening performed while cooling can effectively control the size change of the cardboard, reduce the shrinkage or expansion caused by temperature difference, and ensure that the size of the produced cardboard is accurate and stable, which is particularly important for subsequent automated cutting, folding and other processes, can reduce material waste and improve production accuracy, and the integrated flattening and cooling design can reduce production process steps, simplify the operation process, shorten the processing cycle, and thus improve the output speed and efficiency of the overall production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention; Figure 2 It is a schematic diagram of the overall top view structure of the present invention; Figure 3 It is a schematic diagram of the overall side view structure of the present invention; Figure 4 It is a schematic diagram of the overall side section structure of the present invention; Figure 5 It is a schematic diagram of the overall structure of the drying and conveying device 12 of the present invention; Figure 6 It is a schematic diagram of the internal structure of the drying and conveying device 12 of the present invention; Figure 7 It is a schematic diagram of the overall internal structure of the present invention; Figure 8 It is a schematic diagram of the overall internal cross-sectional structure of the present invention.

[0020] Description of reference numerals: Incoming plate conveying device 11, drying and conveying device 12, flattening and cooling device 13, outgoing plate conveying device 14, left fixed frame 15, first rotating shaft 16, conveying roller 17, right fixed frame 18, first rotating sleeve 19, differential controller 20, driving motor 21, first conveyor belt 22, driving rod 23, side end fixing plate 24, pneumatic drying device 25, first oblique fixing plate 26, second rotating shaft 27, second rotating roller 28, outer guide plate 29, outer end fixing plate 30, inner fixing plate 31, second conveyor belt 32, protective frame 33, first exhaust slot 34, heater 36 , cold air fan 37, second exhaust groove 38, air pipe 40, side plate 41, sliding plate 42, spoon-shaped fanning blade 43, rotating air pipe 44, inner tube cavity 45, middle roller 46, conveying groove plate 47, conveying inner groove 48, cold air fixing frame 49, pushing plate 50, fifth conveyor belt 51, fourth rotating shaft 52, lower conveying plate 53, support frame 54, warm air cavity 55, ventilation hole 56, cold air side end block 57, third conveyor belt 58, seventh conveyor belt 60, middle fixed block 61, sixth conveyor belt 62, eighth conveyor belt 63, first differential motor 64, second differential motor 65. DETAILED DESCRIPTION

[0021] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] As attached Figure 1 To Attachment Figure 8 As shown: A multifunctional intelligent drying device for corrugated board production, comprising a board feeding conveying device 11, a drying transmission device 12, a flattening cooling device 13 and a board discharging conveying device 14, wherein the board feeding conveying device 11 is connected to the drying transmission device 12, the drying transmission device 12 is connected to the flattening cooling device 13, the flattening cooling device 13 is connected to the board discharging conveying device 14, the drying transmission device 12 comprises a protection frame 33, the protection frame 33 has a warm air cavity 55, a middle fixing block 61 is symmetrically installed on the inner wall of the middle part of the warm air cavity 55, a plurality of middle layer rollers 46 arranged transversely at intervals are arranged inside the warm air cavity 55, and the warm air cavity 55 is divided into upper and lower parts by the transversely arranged middle layer rollers 46. There are two cavities, namely the first cavity and the second cavity. A ventilation gap is formed between two adjacent middle drums 46. The middle drum 46 itself has a plurality of vents. A pneumatic drying device 25 is provided in both the first cavity and the second cavity. The pneumatic drying device 25 rotates in the first cavity to generate a clockwise first circulating airflow. The pneumatic drying device 25 rotates in the second cavity to generate a counterclockwise second circulating airflow. A differential controller 20 is also provided on the outer wall of the protection frame 33. The differential controller 20 controls the speed difference between the pneumatic drying device 25 in the first cavity and the pneumatic drying device 25 in the second cavity, so as to control the flow rate difference between the upper side and the lower layer of the corrugated cardboard to utilize the pressure difference for dehumidification.

[0025] See attached Figure 1 To Attachment Figure 8 , Preferably, the pneumatic drying device 25 includes a rotating air pipe 44 and an eighth conveyor belt 63 arranged on the outside of the rotating air pipe 44, a plurality of fanning plates 43 are arranged in an array on the outside of the eighth conveyor belt 63, the rotating air pipe 44 is rotatably installed on the inner wall of the protective frame 33, and the protective frame 33 is connected with a first differential motor 64 and a second differential motor 64, the first differential motor 64 is connected to the rotating air pipe 44 on the upper side, and the second differential motor 64 is connected to the rotating air pipe 44 on the lower side, and the protective frame 33 is also provided with the differential controller for controlling the speed difference between the first differential motor 64 and the second differential motor 64.

[0026] Preferably, the flattening cooling device 13 includes a cold air fixing frame 49, and a heater 36 is fixedly installed inside the cold air fixing frame 49. A push plate 50 is fixedly connected to the output end of the heater 36. A cold air side end block 57 is symmetrically connected to the side end of the push plate 50. A plurality of fourth rotating shafts 52 are rotatably installed on the inner surface of the cold air side end block 57. A fifth conveyor belt 51 is rotatably installed on the upper surface of the fourth rotating shaft 52. A lower conveyor plate 53 is provided below the fifth conveyor belt 51, and the lower conveyor plate 53 is located on the right side of the middle fixed block 61.

[0027] Preferably, the plate feeding conveying device 11 includes a left side fixing frame 15 and a right side fixing frame 18, a first rotating shaft 16 is rotatably installed between the left side fixing frame 15 and the right side fixing frame 18, the end of the first rotating shaft 16 penetrates the right side fixing frame 18 and is fixedly connected with a first rotating sleeve 19, the outer end surface of the first rotating sleeve 19 is fixedly connected with a driving motor 21, a plurality of driving rods 23 are arranged in an array on the right side of the first rotating shaft 16, the outer ends of the driving rods 23 are fixedly connected with a side end fixing plate 24, the driving rod 23 provided at the right end is rotatably installed with a first conveyor belt 22 on the surface of the first rotating shaft 16, and the first conveyor belt 22 and the surface of the first rotating shaft 16 are both provided with conveying rollers 17.

[0028] Preferably, the right ends of the left fixing frame 15 and the right fixing frame 18 are fixedly connected with a first oblique fixing plate 26, a plurality of second rotating shafts 27 are rotatably installed between the first oblique fixing plates 26, a second rotating roller 28 is rotatably installed on the surface of the second rotating shaft 27, an inner fixing plate 31 and an outer fixing plate 30 are fixedly installed on the right end surface of the second rotating shaft 27, a second conveyor belt 32 is sleeved between the outer fixing plate 30 and the inner fixing plate 31, and the left section of the second conveyor belt 32 is sleeved on the surface of the driving rod 23.

[0029] Preferably, the middle roller 46 of the array is covered with a sixth conveyor belt 62 to drive the sixth conveyor belt 62 to rotate, and the sixth conveyor belt 62 is covered on the second rotating shaft 27 to drive the second rotating shaft 27 to rotate.

[0030] Preferably, a heater 36 is fixedly installed on the outer surface of the protection frame 33, and a first exhaust groove 34 is fixedly connected to the right output end of the heater 36, and a sliding plate 42 is fixedly connected to the lower output end of the heater 36, and a second exhaust groove 38 is fixedly connected to the lower end of the sliding plate 42, and the second exhaust groove 38 is connected to the first exhaust groove 34 and the inside of the warm air chamber 55.

[0031] Preferably, the outer end of the cold air fixing frame 49 is fixedly connected to the output end of the cold air fan 37, and the lower end of the air supply pipe 40 is fixedly connected to a side panel 41. The side panel 41 is connected to the inside of the cold air fixing frame 49, and a plurality of ventilation holes 56 are arranged in an array on the opposite surfaces of the cold air fixing frame 49 and the side panel 41.

[0032] Preferably, a conveying trough plate 47 is fixedly installed above the symmetrically arranged middle fixed block 61, a conveying inner trough 48 is provided between the conveying trough plate 47 and the middle fixed block 61, an outer guide plate 29 is fixedly installed on the left side of the protection frame 33, and a support frame 54 is fixedly installed on the lower surface of the board inlet conveying device 11 and the board outlet conveying device 14.

[0033] Specific use of the present invention: When using the present invention, first install the present invention in the drying workshop, and after the installation is completed, the power supply of the present invention can be connected, and after the connection is completed, the present invention can be started. When the present invention is running, the corrugated cardboard to be dried will be placed on the surface of the board feeding conveyor 11. After the corrugated cardboard is placed on the surface of the board feeding conveyor 11, the driving motor 21 will start the equipment control system and drive the conveying roller 17 to rotate, and when the conveying roller 17 rotates, it will drive the first conveyor belt 22 to roll, and when the conveying roller 17 rolls, it will drive the corrugated cardboard to roll, and when the corrugated cardboard is rolled on the surface of the second rotating roller 28, the second rotating shaft 27 arranged at the outer end of the second rotating roller 28 will be driven by the second conveyor belt 32 and the outer end of the first conveyor belt 22, and make it form a rolling state, and when the second rotating roller 28 rolls, it will also drive the corrugated cardboard to move into the protective frame 33, and when the corrugated cardboard moves into the protective frame 33, it can be dried by the heater 36.

[0034] When the corrugated cardboard moves into the protection frame 33, the heater 36 arranged on the outside of the protection frame 33 will be started. When the heater 36 is started, it will transmit warm air to the inside of the rotating air pipe 44 through the first exhaust slot 34 and the second exhaust slot 38, and the first differential motor 64 and the second differential motor 65 arranged at the outer end of the rotating air pipe 44 will drive the rotating air pipe 44 arranged at both ends to rotate to promote rapid heat exchange, so that cold air quickly enters from the rear and circulates and pushes the hot air through the spoon-shaped fanning blades 43, and the differential controller 20 arranged at the outer ends of the first differential motor 64 and the second differential motor 65 will control the speed difference between the first exhaust slot 34 and the second exhaust slot 38 and make the first cavity and the second cavity The air pressure forms a difference value, and when the first exhaust groove 34 rotates at a high speed, a high-speed high pressure is formed, and the second exhaust groove 38 rotates at a low speed, a low-speed negative pressure is formed, and the first cavity begins to form an extrusion effect on the second cavity. When the extrusion effect is formed, it begins to form an extrusion on the surface of the corrugated paper. The pressure difference air will pass through the pores of the corrugated paperboard and begin to form a dehumidifying effect on the paperboard. When the third conveyor belt 58 moves, it will drive the middle roller 46 to roll, and when the middle roller 46 rolls, it will drive the corrugated paperboard to move forward. The corrugated paperboard moving forward will be affected by the warm air blown by the pneumatic drying device 25 when it rotates, and the upper and lower surfaces of the corrugated paperboard can be dried. After drying, the corrugated paperboard will be conveyed to the inside of the flattening cooling device 13.

[0035] When the corrugated cardboard moves to the inside of the board discharge conveying device 14, the lower conveying plate 53 arranged at the outer end will pass through the seventh conveyor belt 60 and drive the middle roller 46 to move, and when the middle roller 46 moves, it will drive the lower conveying plate 53 to rotate, and when the lower conveying plate 53 rotates, the warm air machine 36 arranged on the inner side of the outer guide plate 29 will push the pushing plate 50 to descend and make the fifth conveyor belt 51 press the surface of the corrugated cardboard, and when the pressing is completed, the cold air machine 37 arranged on the side of the cold air fixing frame 49 will blow air to the side plate 41, and the blown cold air will pass through the side of the corrugated board to blow and cool the inside of the corrugated board and quickly dry it, and when the drying is completed, it can be discharged to the outside through the board discharge conveying device 14 to form an assembly line transportation.

[0036] The invention discloses a multifunctional intelligent drying device for corrugated cardboard production, which adopts a rotating drying air pipe. This design can ensure that hot air or steam is evenly distributed on the entire cardboard surface, reduce the phenomenon of local overheating or insufficient drying, and improve the overall drying efficiency. In this way, the cardboard can reach the required drying degree in a shorter time, speed up the production rhythm, and the drying air pipe can continuously change its position by rotating, ensuring that each part of the cardboard can receive direct heat, avoiding uneven drying caused by fixed heat source, thereby ensuring the flatness and overall quality of the cardboard, and the uniform and efficient drying process reduces unnecessary energy waste. Compared with the non-uniform drying method, it can save energy consumption to a certain extent, which is in line with the environmental protection concept of energy saving and emission reduction, and because the hot air is evenly distributed, the water evaporation rate of each part of the cardboard is more consistent, effectively reducing the risk of cardboard deformation caused by local rapid drying, such as bending or wavy, which is conducive to maintaining the geometric dimensional stability of the cardboard.

[0037] The invention discloses a multifunctional intelligent drying device for producing corrugated paperboard, which uses a fan to cool the paperboard that has just been dried at high temperature, and can also cool the inside of the corrugated paper by air cooling. After high temperature drying, the inside of the paperboard may still contain a certain amount of residual heat. If the heat is not dissipated in time, it is easy to cause the paperboard to expand or warp. By quickly reducing the temperature of the side of the paperboard through air cooling, the paperboard can be quickly restored to a stable state, reduce shape deformation, maintain good flatness and dimensional stability, and rapid cooling can shorten the waiting time of the paperboard from drying to the next process (such as cutting, printing, etc.), accelerate the entire production process, and improve the turnover rate and overall efficiency of the production line. Moreover, the corrugated paperboard is formed by bonding the surface paper, the core paper and the corrugated base paper, and high temperature drying may have a certain effect on the bonding performance of the glue. The cooling process helps to stabilize the bonding state of the glue, enhance the bonding force between the paperboard layers, and improve the burst resistance and compressive strength of the finished product. Compared with natural cooling, active cooling using a fan can remove the heat on the paperboard more quickly and reduce energy consumption. Although the operation of the fan consumes electricity, it can generally achieve the goal of energy conservation and cost reduction by shortening the production cycle and reducing the scrap rate.

[0038] The invention discloses a multifunctional intelligent drying device for producing corrugated cardboard, which is provided with a flattening device during cooling and temperature reduction, and after high-temperature drying, the cardboard may be locally deformed due to uneven evaporation of water or thermal expansion and contraction effects. The synchronous flattening operation can correct these deformations in real time during the cooling and shaping process of the cardboard, ensuring that the surface of the final product is flat and smooth, meeting the requirements of high-quality packaging or printing, and the uniform pressure helps to further promote the close fit of the internal structure of the cardboard, including the bonding strength between the surface paper and the core paper, thereby improving the overall physical properties of the cardboard, such as edge strength, flat compression strength and burst resistance, making it more suitable for carrying heavy objects or performing complex processing, and the flattening performed while cooling can effectively control the size change of the cardboard, reduce the shrinkage or expansion caused by temperature difference, and ensure that the size of the produced cardboard is accurate and stable, which is particularly important for subsequent automated cutting, folding and other processes, can reduce material waste and improve production accuracy, and the integrated flattening and cooling design can reduce production process steps, simplify the operation process, shorten the processing cycle, and thus improve the output speed and efficiency of the overall production line.

[0039] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A multifunctional intelligent drying device for corrugated board production, characterized in that: The invention comprises a plate-infeeding conveying device, a drying and conveying device, a flattening and cooling device and a plate-outfeeding conveying device, wherein the plate-infeeding conveying device is connected to the drying and conveying device, the drying and conveying device is connected to the flattening and cooling device, the flattening and cooling device is connected to the plate-outfeeding conveying device, the drying and conveying device comprises a protection frame, the protection frame has a warm air cavity, a middle fixing block is symmetrically installed on the inner wall in the middle of the warm air cavity, a plurality of middle-layer rollers arranged at intervals in transverse direction are arranged inside the warm air cavity, the warm air cavity is divided into two upper and lower cavities by the middle-layer rollers arranged in transverse direction, namely, a first cavity and a second cavity, and two adjacent cavities are provided. A ventilation gap is formed between the middle-layer rollers, and the middle-layer rollers themselves have a plurality of ventilation holes. Pneumatic drying devices are provided in both the first cavity and the second cavity. The pneumatic drying device rotates in the first cavity to generate a first clockwise circulating airflow, and the pneumatic drying device rotates in the second cavity to generate a second counterclockwise circulating airflow. A differential controller is also provided on the outer wall of the protection frame. The differential controller controls the speed difference between the pneumatic drying device in the first cavity and the pneumatic drying device in the second cavity, so as to control the flow rate difference between the upper side and the lower layer of the corrugated cardboard to utilize the pressure difference for dehumidification.

2. The multifunctional intelligent drying device for corrugated board production according to claim 1 is characterized in that: The pneumatic drying device includes a rotating air pipe and an eighth conveyor belt arranged on the outside of the rotating air pipe. A plurality of fanning plates are arranged in an array on the outside of the eighth conveyor belt. The rotating air pipe is rotatably installed on the inner wall of the protection frame. The protection frame is connected to a first differential motor and a second differential motor. The first differential motor is connected to the rotating air pipe on the upper side, and the second differential motor is connected to the rotating air pipe on the lower side. The protection frame is also provided with the differential controller for controlling the speed difference between the first differential motor and the second differential motor.

3. The multifunctional intelligent drying device for corrugated board production according to claim 1 is characterized in that: The flattening cooling device includes a cold air fixing frame, a heater is fixedly installed inside the cold air fixing frame, a push plate is fixedly connected to the output end of the heater, a cold air side end block is symmetrically connected to the side end of the push plate, a plurality of fourth rotating shafts are rotatably installed on the inner surface of the cold air side end block, a fifth conveyor belt is rotatably installed on the upper surface of the fourth rotating shaft, a lower conveyor plate is provided below the fifth conveyor belt, and the lower conveyor plate is located on the right side of the middle fixed block.

4. The multifunctional intelligent drying device for corrugated board production according to claim 1 is characterized in that: The plate feeding conveying device includes a left side fixed frame and a right side fixed frame, a first rotating shaft is rotatably installed between the left side fixed frame and the right side fixed frame, the end of the first rotating shaft penetrates the right side fixed frame and is fixedly connected with a first rotating sleeve, the outer end surface of the first rotating sleeve is fixedly connected with a driving motor, a plurality of driving rods are arranged in an array on the right side of the first rotating shaft, the outer end of the driving rod is fixedly connected with a side end fixing plate, the driving rod provided at the right end is rotatably installed with a first conveyor belt on the surface of the first rotating shaft, and the first conveyor belt and the surface of the first rotating shaft are both provided with conveying rollers.

5. The multifunctional intelligent drying device for corrugated board production according to claim 4 is characterized in that: The left and right fixed frames are fixedly connected with a first oblique fixed plate at their right ends, a plurality of second rotating shafts are rotatably mounted between the first oblique fixed plates, a second rotating roller is rotatably mounted on the surface of the second rotating shaft, an inner fixed plate and an outer fixed plate are fixedly mounted on the right end surface of the second rotating shaft, a second conveyor belt is sleeved between the outer fixed plate and the inner fixed plate, and a left section of the second conveyor belt is sleeved on the surface of the driving rod.

6. The multifunctional intelligent drying device for corrugated board production according to claim 5, characterized in that: The middle roller of the array is covered with a sixth conveyor belt to drive the sixth conveyor belt to rotate, and the sixth conveyor belt is covered on the second rotating shaft to drive the second rotating shaft to rotate.

7. The multifunctional intelligent drying device for corrugated board production according to claim 2 is characterized in that: A heater is fixedly installed on the outer surface of the protection frame, a first exhaust groove is fixedly connected to the right output end of the heater, a sliding plate is fixedly connected to the lower output end of the heater, a second exhaust groove is fixedly connected to the lower end of the sliding plate, and the second exhaust groove is connected to the first exhaust groove and the inside of the warm air chamber.

8. The multifunctional intelligent drying device for corrugated board production according to claim 3 is characterized by: The outer end of the cold air fixing frame is fixedly connected with an air supply pipe, the lower end of the air supply pipe is fixedly connected with a side plate, the side plate is connected with the inside of the cold air fixing frame, and the opposite surfaces of the cold air fixing frame and the side plate are arrayed with multiple ventilation holes.

9. The multifunctional intelligent drying device for corrugated board production according to claim 8, characterized in that: A conveying trough plate is fixedly installed above the symmetrically arranged middle fixed block, a conveying inner trough is provided between the conveying trough plate and the middle fixed block, an outer guide plate is fixedly installed on the left side of the protection frame, and a support frame is fixedly installed on the lower surface of the board inlet conveying device and the board outlet conveying device.

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