Paperboard forming device and multilayer paperboard

Abstract

The invention provides a paperboard forming device and a multi-layer paperboard, and relates to the technical field of paperboard forming devices.A stepped lifting drying device is adopted for extrusion forming and drying of the multi-layer paperboard, a hot air blower is adopted for supplying hot air from the top of a shell, the hot air flows back after being blown to the lower portion and convects with hot air continuously blown in from the upper portion in the middle of an inner cavity of the shell, and therefore the multi-layer paperboard is formed. The temperature in the shell is attenuated in a gradient manner from top to bottom; in the process, the lifting tray mechanism carries the contained multi-layer paperboards to move from top to bottom, the multi-layer paperboards to be dried move in the gradient attenuation temperature environment, so that the surface layers of the multi-layer paperboards are not over-dried, heat has enough time to permeate into the inner layers of the multi-layer paperboards, and when the multi-layer paperboards move to the hot air convection position, the multi-layer paperboards are dried. Moisture migration among the multiple layers of paperboards is accelerated due to the turbulent flow effect of hot air convection, the drying quality of the inner layers and the surface layers of the multiple layers of paperboards is guaranteed, gradient utilization of heat energy is achieved, the heat exchange efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of cardboard forming devices, and more particularly to a cardboard forming device and multi-layer cardboard. Background Art

[0002] The descriptions in this section only provide background information related to the present disclosure and do not constitute prior art.

[0003] Each layer structure of the multi-layer cardboard is bonded by glue and then compacted by a forming device, and then dried through a drying section to complete the processing process.

[0004] In the related art, the drying device for multi-layer cardboard blows hot air directly downward from the top of the device and then discharges it from the bottom of the device. The unidirectional penetration of the hot air through the multi-layer cardboard results in over-drying of the surface layer, excessive moisture content in the inner layer, low heat exchange efficiency, and high energy consumption.

[0005] Some drying devices for multi-layer cardboard use hot air in multiple directions to dry the multi-layer cardboard, but still cannot avoid the problem of over-drying of the surface layer, with low heat exchange efficiency and high energy consumption. Summary of the Invention

[0006] The purpose of the present invention is to provide a cardboard forming device and multi-layer cardboard, which have the advantage of ensuring the drying quality of the inner layer and surface layer of the multi-layer cardboard by utilizing the thermal energy gradient, and solve the technical problems of inconsistent drying degree between the inner layer and the surface layer of the multi-layer cardboard in the related art, low heat exchange efficiency, and high energy consumption.

[0007] The present invention provides a cardboard forming device, including:

[0008] A stepped lifting drying device, which includes:

[0009] A housing, the inner cavity of which is equipped with a lifting tray mechanism;

[0010] The upper and lower sides of the outer wall of the housing are respectively provided with a feeding window structure and a discharging window structure;

[0011] A roll forming device is fixedly assembled at the upper end of the outer wall of the housing, and its output end corresponds to the feeding window structure;

[0012] The top surface of the housing is fixedly communicated with a hot air blower;

[0013] A cardboard pushing structure is fixedly assembled at the lower end of the inner cavity of the housing;

[0014] The hot air entering from above the housing and the hot air flowing back from below convect in the middle of its inner cavity, and an exhaust duct is fixedly communicated with the middle of the side wall of the housing;

[0015] The movable part of the lifting tray mechanism holds the cardboard and descends from above the inner cavity of the housing to the cardboard pushing structure;

[0016] The cardboard pushing structure is used in cooperation with the lifting tray mechanism to push the dried cardboard out from the discharge window structure.

[0017] As a further optimization, in order to drive the mesh plate to hold the cardboard and move up and down in the housing, when the mesh plate is at the upper end, it receives the cardboard, and then the mesh plate holding the cardboard moves to fit the cardboard pushing structure. The cardboard pushing structure is used to push the cardboard held by the mesh plate out from the discharge window structure. The lifting tray mechanism includes:

[0018] A first motor, which is fixedly assembled on one side of the top surface of the housing away from the feeding window structure;

[0019] The lower end of the output of the first motor penetrates through the top surface of the housing and is fixedly connected to a first screw rod, and its lower end extends to the lower end of the inner cavity of the housing;

[0020] A connecting plate is screwed on the outer wall of the first screw rod. One end of the connecting plate close to the feeding window structure is fixedly assembled with a mesh plate, and one end of the mesh plate close to the feeding window structure is slidably attached to the inner wall of the housing;

[0021] A baffle is fixedly assembled at the edge of the upper surface of the mesh plate on one side away from the feeding window structure;

[0022] A first strip-shaped through hole is formed in the middle of the upper surfaces of the mesh plate and the baffle along the feeding direction;

[0023] The width of the movable end of the cardboard pushing structure is the same as the width of the first strip-shaped through hole.

[0024] As a further optimization, after the lifting tray mechanism holds the cardboard and descends to fit the cardboard pushing structure, in order to drive the push plate to move toward the discharge window structure side by extending the push plate into the first strip-shaped through hole of the baffle, and push the cardboard held by the lifting tray mechanism out from the discharge window structure. The cardboard pushing structure includes:

[0025] A strip-shaped mounting plate, one end of which close to the feeding window structure is fixedly assembled at the lower end of the inner cavity of the housing;

[0026] The distance between the upper surface of the strip-shaped mounting plate and the bottom surface of the inner cavity of the discharge window structure is the same as the thickness of the mesh plate;

[0027] A second motor is fixedly assembled on one side of the bottom surface of the strip-shaped mounting plate close to the feeding window structure, and the output end of the second motor is fixedly connected to a second screw rod on the side away from the feeding window structure;

[0028] A second strip-shaped through hole is formed in the middle of the upper end of the strip-shaped mounting plate along the discharge direction;

[0029] A push plate is screwed on the outer wall of the second screw rod;

[0030] The push plate is slidably assembled in the second strip-shaped through hole, and the upper end of the push plate extends out of the second strip-shaped through hole.

[0031] As a further optimization scheme, in order to close and block the strip-shaped material opening when not in use and reduce heat dissipation, the structures of the feeding window structure and the discharging window structure are the same. The feeding window structure includes:

[0032] A strip-shaped material opening, which is horizontally opened at the upper end of the outer wall of the housing;

[0033] A silica gel baffle is fixedly adhered to the outer edge of the top surface of the strip-shaped material opening, and its lower end fits against the bottom surface of the strip-shaped material opening.

[0034] As a further optimization scheme, in order to assist the roll forming device to better convey the extruded cardboard to the movable part of the lifting tray mechanism, mounting grooves are evenly opened along the length direction on the outer side of the bottom surface of the strip-shaped material opening;

[0035] A third motor is fixedly assembled on the outer wall of the housing corresponding to the mounting groove, and a round rod is fixedly connected to the output end thereof;

[0036] The round rod penetrates through the mounting groove;

[0037] A driving roller is fixedly sleeved on the outer wall of the round rod corresponding to the mounting groove;

[0038] The driving roller is located in the corresponding mounting groove, and the upper end of the driving roller extends out of the mounting groove.

[0039] As a further optimization scheme, in order to better guide the dried cardboard of the device into the cardboard storage device for storage, a cardboard storage device is provided outside the discharging window structure of the housing;

[0040] One end of a diversion inclined plate is fixedly assembled at the lower edge of the outer wall of the discharging window structure, and the other end of the diversion inclined plate extends to the upper edge of the side of the cardboard storage device close to the housing;

[0041] The upper surface of the diversion inclined plate is inclined from the discharging window structure to the cardboard storage device.

[0042] As a further optimization scheme, in order to store the discharged dried cardboard and facilitate centralized removal after storage, the cardboard storage device includes:

[0043] An outer side groove body, a first electric push rod is vertically fixedly assembled on the bottom surface of its inner cavity, and a tray is fixedly assembled at the telescopic upper end thereof;

[0044] A storage groove body is fixedly assembled on the upper surface of the tray on the side away from the housing;

[0045] Longitudinal windows are symmetrically opened on the side wall of the storage groove body, and the upper ends thereof extend to the upper edge of the storage groove body.

[0046] As a further optimization solution, in order to press and form the initially pasted multi-layer cardboard and perform cutting and block division, the roll forming device includes:

[0047] An arched mounting frame, with a transverse mounting plate fixedly assembled at its lower end;

[0048] The transverse mounting plate is fixedly assembled below the feed window structure on the outer wall of the housing;

[0049] A cardboard pressing roller assembly is assembled on the inner wall of the arched mounting frame;

[0050] A third strip-shaped through hole is horizontally opened on the top surface of the arched mounting frame, and is located between the cardboard pressing roller assembly and the housing;

[0051] A lifting cutting mechanism is fixedly assembled on the upper edge in the length direction of the third strip-shaped through hole, and its movable lower end passes through the third strip-shaped through hole and extends below the height of the output end of the cardboard pressing roller assembly.

[0052] A multi-layer cardboard, made by the above cardboard forming device, includes:

[0053] Honeycomb cardboard layers, and the number thereof is three;

[0054] An interlayer fiber layer is fixedly pasted between adjacent honeycomb cardboard layers;

[0055] The overall outer wall of the honeycomb cardboard layer and the interlayer fiber layer is coated with a composite functional layer.

[0056] As a further optimization solution, in order to enhance the antistatic and waterproof capabilities of the multi-layer cardboard, the composite functional layer includes:

[0057] An antistatic coating, which is coated on the overall outer wall of the honeycomb cardboard layer and the interlayer fiber layer;

[0058] A hydrophobic coating is coated on the outer wall of the antistatic coating.

[0059] The present invention provides a cardboard forming device and a multi-layer cardboard by improvement. Compared with the prior art, it has the following improvements and advantages:

[0060] Hot air is supplied from the top of the housing by a hot air blower. After the hot air blows downward, it flows back and convects with the continuously incoming hot air from above in the middle of the inner cavity of the housing, and finally is discharged from the exhaust duct, making the temperature inside the housing decay in a gradient from top to bottom. During this process, the lifting tray mechanism drives the stacked cardboard placed on it to move downward at a uniform and slow speed. The cardboard to be dried moves in a temperature environment with a gradient decay, so that the surface layer of the stacked cardboard will not be over-dried, and there is enough time for the heat to penetrate into the inner layer of the stacked cardboard. When the stacked cardboard moves to the hot air convection area, the turbulent flow effect of the hot air convection accelerates the moisture migration between the layers of the stacked cardboard, ensuring the drying quality of the inner and outer layers of the stacked cardboard, realizing the gradient utilization of heat energy, improving the heat exchange efficiency, and reducing energy consumption. Description of the Drawings

[0061] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0062] Figure 1 Structural schematic diagram of the present invention;

[0063] Figure 2 Partial structural schematic diagram of the present invention;

[0064] Figure 3 Structural schematic sectional view of the present invention;

[0065] Figure 4 Horizontal structural schematic sectional view at the lifting tray mechanism of the present invention;

[0066] Figure 5 Longitudinal structural schematic sectional view at the cardboard pushing structure of the present invention;

[0067] Figure 6 Horizontal structural schematic sectional view at the cardboard pushing structure of the present invention;

[0068] Figure 7 For the present invention Figure 3 Enlarged structural schematic diagram at position A in;

[0069] Figure 8 Structural schematic sectional view of the cardboard storage device of the present invention;

[0070] Figure 9 Structural schematic diagram of the cardboard storage device of the present invention;

[0071] Figure 10 Structural schematic diagram of the roll forming device of the present invention;

[0072] Figure 11 Structural schematic diagram of the lifting and cutting mechanism of the present invention;

[0073] Figure 12 Structural schematic diagram of the diversion inclined plate of the present invention;

[0074] Figure 13 Schematic sectional view of the structure of the hot air blower of the present invention;

[0075] Figure 14 Schematic sectional view of the structure of the multi-layer cardboard of the present invention.

[0076] Explanation of reference numerals:

[0077] 1 - Step-type lifting and drying device, 11 - Outer shell, 12 - Feed window structure, 121 - Strip-shaped material opening, 122 - Silicone baffle, 123 - Installation groove, 124 - Round rod, 125 - Third motor, 126 - Driving roller, 13 - Discharge window structure, 14 - Hot air blower, 141 - Cylinder, 142 - Fan, 143 - Electric heating tube, 144 - Connecting ear plate, 145 - Dust-proof net, 15 - Lifting tray mechanism, 151 - First motor, 152 - First screw rod, 153 - Connecting plate, 154 - Mesh plate, 155 - Baffle, 156 - First strip-shaped through hole, 16 - Cardboard pushing structure, 161 - Strip-shaped mounting plate, 162 - Second strip-shaped through hole, 163 - Second motor, 164 - Second screw rod, 165 - Pushing plate, 2 - Transverse mounting plate, 3 - Roll forming device, 31 - Arch-shaped mounting frame, 32 - Third strip-shaped through hole, 33 - Lifting and cutting mechanism, 331 - L-shaped mounting plate, 332 - Third electric push rod, 333 - Cutting tool head, 3331 - Cavity tool head body, 3332 - Corrugated reinforcing plate, 3333 - Hollow through hole, 34 - Cardboard pressing roller assembly, 341 - Strip-shaped mounting groove, 342 - Fourth motor, 343 - Third screw rod, 344 - Slide block, 345 - Pressing roller, 346 - Fifth motor, 4 - Cardboard storage device, 41 - Outer side groove body, 42 - First electric push rod, 43 - Support plate, 44 - Storage groove body, 45 - Second electric push rod, 46 - Vertical plate, 5 - Diversion inclined plate, 51 - Diversion plate, 52 - Card slot, 6 - Heat storage body, 7 - Multi-layer cardboard, 71 - Honeycomb cardboard layer, 72 - Interlayer fiber layer, 73 - Composite functional layer, 731 - Antistatic coating, 732 - Hydrophobic coating, 8 - Exhaust duct. Detailed implementation manners

[0078] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It 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 on the present invention.

[0080] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] Please refer to Figures 1-14 , the present invention provides a technical solution: a cardboard forming device, comprising:

[0082] A stepped lifting and drying device 1, which comprises:

[0083] A housing 11, the inner cavity of which is equipped with a lifting tray mechanism 15;

[0084] On the upper and lower sides of the outer wall of the housing 11, a feeding window structure 12 and a discharging window structure 13 are respectively provided;

[0085] On the upper end of the outer wall of the housing 11, a roll forming device 3 is fixedly assembled, and its output end corresponds to the feeding window structure 12;

[0086] On the top surface of the housing 11, a hot air blower 14 is fixedly communicated;

[0087] At the lower end of the inner cavity of the housing 11, a cardboard pushing structure 16 is fixedly assembled;

[0088] The hot air entering from above the housing 11 and the hot air flowing back from below are in convection in the middle of its inner cavity, and a ventilation duct 8 is fixedly communicated with the middle part of the side wall of the housing 11;

[0089] The movable part of the lifting tray mechanism 15 holds the cardboard and descends from above the inner cavity of the outer shell 11 to the cardboard pushing structure 16;

[0090] The cardboard pushing structure 16 is used in cooperation with the lifting tray mechanism 15 to push the dried cardboard out from the discharge window structure 13.

[0091] As Figures 1-6 shown, specifically in this embodiment, both the feeding window structure 12 and the discharge window structure 13 are horizontally arranged on the outer wall of the outer shell 11. There are three roller forming devices 3 corresponding to the feeding window structure 12. A complete set of hot air blowers 14, lifting tray mechanisms 15 and cardboard pushing structures 16 are respectively arranged on the outer shell 11 for the three roller forming devices 3, which can complete the simultaneous processing of multiple multi-layer cardboard 7 and improve production efficiency;

[0092] Furthermore, the lifting tray mechanism 15 is connected to an external PLC controller to control the lifting speed and lifting stroke, so that the movable part of the lifting tray mechanism 15 rises and falls uniformly and slowly in the inner cavity of the outer shell 11; the movable part of the lifting tray mechanism 15 carries the dried multi-layer cardboard 7 and descends to fit the cardboard pushing structure 16, and the cardboard pushing structure 16 is used in cooperation with the lifting tray mechanism 15 to push the dried cardboard out from the discharge window structure 13;

[0093] More specifically, the hot air generated by the hot air blower 14 is fed in from the top of the outer shell 11. After the hot air blows to the lower part, it flows back and convects with the continuously blown hot air from above in the middle of the inner cavity of the outer shell 11, and finally is discharged from the exhaust duct 8, so that the temperature inside the outer shell 11 decays in a gradient from top to bottom. During this process, the lifting tray mechanism 15 carries the placed multi-layer cardboard 7 and moves uniformly and slowly from top to bottom. The multi-layer cardboard 7 to be dried moves in an environment with a temperature that decays in a gradient, so that the surface layer of the multi-layer cardboard 7 is not over-dried, and there is enough time for the heat to penetrate to the inner layer of the multi-layer cardboard 7. When the multi-layer cardboard 7 moves to the hot air convection area, due to the turbulence effect of the hot air convection, the moisture migration between the layers of the multi-layer cardboard 7 is accelerated, ensuring the drying quality of the inner layer and the surface layer of the multi-layer cardboard 7 and realizing the gradient utilization of heat energy;

[0094] It can be understood that the exhaust duct 8 is used to discharge the hot air that convects in the middle of the inner cavity of the outer shell 11. The hot air after heat exchange is discharged from the exhaust duct 8, and the waste heat in this part of the hot air can be reused by heat exchange.

[0095] In some embodiments, the hot air blower 14 includes:

[0096] A cylinder 141, the lower end of which is inserted into a reserved through hole opened on the top surface of the outer shell 11;

[0097] A fan 142 is fixedly assembled at the upper end of the inner cavity of the cylinder 141, and its wind direction is towards the inner cavity of the outer shell 11;

[0098] An electric heating tube 143 is fixedly assembled at the lower end of the inner cavity of the cylinder 141;

[0099] A dust-proof net 145 is fixedly assembled at the upper edge of the inner cavity of the cylinder 141,

[0100] A connecting ear plate 144 is fixed at the lower end of the outer wall of the cylinder 141, and it is fixedly connected to the top surface of the outer shell 11 through bolts.

[0101] Specifically in this embodiment, the electric heating tube 143 and the fan 142 are respectively connected to an external power supply. The electric heating tube 143 is coiled into a spiral shape and arranged coaxially with the fan 142 to ensure the heating effect on the passing air to form hot air;

[0102] Furthermore, a dust-proof net 145 is provided to filter dust in the air;

[0103] It can be understood that the hot air blower 14 can be disassembled by removing the bolts on the connecting ear plate 144, which is convenient for its replacement and maintenance.

[0104] In some embodiments, the lifting tray mechanism 15 includes:

[0105] A first motor 151, which is fixedly assembled on the top surface of the outer shell 11 on the side away from the feeding window structure 12;

[0106] The lower end of the output of the first motor 151 penetrates through the top surface of the outer shell 11 and is fixedly connected to a first screw rod 152, and its lower end extends to the lower end of the inner cavity of the outer shell 11;

[0107] A connecting plate 153 is screwed on the outer wall of the first screw rod 152. One end of the connecting plate 153 close to the feeding window structure 12 is fixedly assembled with a net plate 154, and one end of the net plate 154 close to the feeding window structure 12 is slidably attached to the inner wall of the outer shell 11;

[0108] A baffle 155 is fixedly assembled at the edge of the upper surface of the net plate 154 on the side away from the feeding window structure 12;

[0109] A first strip-shaped through hole 156 is formed in the middle of the upper surfaces of the net plate 154 and the baffle 155 along the feeding direction;

[0110] The width of the movable end of the cardboard pushing structure 16 is the same as the width of the first strip-shaped through hole 156.

[0111] Specifically in this implementation, the first motor 151 is a reduction motor, which is connected to an external power supply and an external PLC controller to work;

[0112] Further, the first motor 151 drives the connecting plate 153 and the mesh plate 154 to lift along the first screw rod 152 through forward and reverse rotation control. The first strip-shaped through hole 156 is provided for the movable end of the cardboard pushing structure 16 to insert and push out the dried multi-layer cardboard 7 placed on the mesh plate 154.

[0113] It can be understood that through the control of the PLC controller, the lifting stroke of the first motor 151 driving the connecting plate 153 and the mesh plate 154 is fixed. When the mesh plate 154 rises to the highest position, its upper surface is in the same plane as the bottom surface of the feeding window structure 12, which is convenient for the extruded multi-layer cardboard 7 to fall on the mesh plate 154 after feeding; when the mesh plate 154 descends to the lowest position, it just fits with the cardboard pushing structure 16.

[0114] In some embodiments, heat storage bodies 6 are evenly embedded and assembled on the mesh plate 154. The heat storage bodies 6 absorb the high temperature at the upper end of the inner cavity of the housing 11 and release heat during the process of the mesh plate 154 moving downward to a lower temperature area, absorb the excess heat in the higher temperature area, and continuously release heat in the low temperature area, improving the drying efficiency of the multi-layer cardboard 7 and increasing the utilization rate of thermal energy.

[0115] In some embodiments, the cardboard pushing structure 16 includes:

[0116] A strip-shaped mounting plate 161, one end of which close to the feeding window structure 12 is fixedly assembled at the lower end of the inner cavity of the housing 11;

[0117] The distance between the upper surface of the strip-shaped mounting plate 161 and the bottom surface of the inner cavity of the discharging window structure 13 is the same as the thickness of the mesh plate 154;

[0118] A second motor 163 is fixedly assembled on one side of the bottom surface of the strip-shaped mounting plate 161 close to the feeding window structure 12, and a second screw rod 164 is fixedly connected to the side of its output end far from the feeding window structure 12;

[0119] A second strip-shaped through hole 162 is opened in the middle of the upper end of the strip-shaped mounting plate 161 along the discharging direction;

[0120] A push plate 165 is screwed on the outer wall of the second screw rod 164;

[0121] The push plate 165 is slidably assembled in the second strip-shaped through hole 162, and the upper end of the push plate 165 extends out of the second strip-shaped through hole 162.

[0122] Specifically, in this embodiment, the second motor 163 is connected to an external power supply, and the second motor 163 is connected to an external PLC controller to work;

[0123] Further, when the screen plate 154 is attached to the strip-shaped mounting plate 161, the upper end of the push plate 165 extends into the first strip-shaped through hole 156 of the baffle plate 155. The second motor 163 operates to drive the push plate 165 to move along the second screw rod 164 towards the feeding window structure 12, pushing the multi-layer cardboard 7 on the screen plate 154 to be discharged from the discharging window structure 13. Subsequently, the second motor 163 is controlled to reverse and drive the push plate 165 to reset for the next operation;

[0124] It can be understood that since the distance between the upper surface of the strip-shaped mounting plate 161 and the bottom surface of the inner cavity of the discharging window structure 13 is the same as the thickness of the screen plate 154, after the screen plate 154 is attached to the strip-shaped mounting plate 161, the upper surface of the screen plate 154 and the bottom surface of the discharging window structure 13 are in the same plane, facilitating the discharging of the dried multi-layer cardboard 7.

[0125] In some embodiments, the feeding window structure 12 and the discharging window structure 13 have the same structure. The feeding window structure 12 includes:

[0126] A strip-shaped material opening 121, which is horizontally opened at the upper end of the outer wall of the housing 11;

[0127] A silicone baffle 122 is fixedly adhered to the outer edge of the top surface of the strip-shaped material opening 121, and its lower end is attached to the bottom surface of the strip-shaped material opening 121.

[0128] As Figure 7 shown, specifically in this embodiment, when the strip-shaped material opening 121 is not in use, the silicone baffle 122 closes and blocks the strip-shaped material opening 121 to reduce heat dissipation. When the strip-shaped material opening 121 is in use, the extruded multi-layer cardboard 7 pushes the lower end of the silicone baffle 122 to deform and turn upwards into the inner cavity of the housing 11, and the multi-layer cardboard 7 enters the housing 11 from the gap between the lower end of the silicone baffle 122 and the bottom surface of the strip-shaped material opening 121;

[0129] Further, the height of the strip-shaped material opening 121 is designed according to the thickness of the multi-layer cardboard 7 to be dried, so as to satisfy the feeding after the multi-layer cardboard 7 pushes the silicone baffle 122 to deform and turn upwards, and not set an excessive height to reduce heat dissipation.

[0130] In some embodiments, mounting grooves 123 are uniformly opened along the length direction on the outer side of the bottom surface of the strip-shaped material opening 121;

[0131] A third motor 125 is fixedly assembled on the outer wall of the housing 11 corresponding to the mounting grooves 123, and a round rod 124 is fixedly connected to its output end;

[0132] The round rod 124 penetrates through the mounting grooves 123;

[0133] A driving roller 126 is fixedly sleeved on the outer wall of the round rod 124 corresponding to the mounting grooves 123;

[0134] The driving roller 126 is located in the corresponding installation groove 123, and the upper end of the driving roller 126 extends out of the installation groove 123.

[0135] Specifically, in this embodiment, the third motor 125 is connected to an external power supply to operate, and it drives the round rod 124 and the driving roller 126 to rotate. The upper end of the driving roller 126 extends out of the installation groove 123, and the extended height is very small. Moreover, the top surface of the driving roller 126 is an arc surface, which will not block the feeding of the multi-layer cardboard 7. At the same time, the rotating driving roller 126 assists in conveying the multi-layer cardboard 7 into the housing 11.

[0136] It can be understood that a plurality of driving rollers 126 and installation grooves 123 are provided to assist in conveying the discharged materials of the three roll forming devices 3. The direction in which the driving roller 126 rotates to convey the multi-layer cardboard 7 is towards the inside of the housing 11.

[0137] In some embodiments, a cardboard storage device 4 is provided outside the discharge window structure 13 of the housing 11.

[0138] One end of a diversion inclined plate 5 is fixedly assembled to the lower edge of the outer wall of the discharge window structure 13, and the other end of the diversion inclined plate 5 extends to the upper edge of the side of the cardboard storage device 4 close to the housing 11.

[0139] The upper surface of the diversion inclined plate 5 is inclined from the discharge window structure 13 towards the cardboard storage device 4.

[0140] Specifically, in this embodiment, the diversion inclined plate 5 is a connecting plate with an inclined upper surface, which is used to divert the dried multi-layer cardboard 7 discharged from the discharge window structure 13 into the cardboard storage device 4. The cardboard storage device 4 is used to store the dried multi-layer cardboard 7 for convenient unified removal and processing later.

[0141] In some embodiments, the diversion inclined plate 5 includes:

[0142] A diversion plate 51, which is a triangular plate body with a flat bottom surface and an inclined surface that extends from the discharge window structure 13 to the upper edge of the side of the cardboard storage device 4 close to the housing 11.

[0143] A card slot 52 is opened on the bottom surface of the diversion plate 51 close to the side of the cardboard storage device 4, and the upper edge of the side of the cardboard storage device 4 close to the housing 11 is inserted into the card slot 52, which is convenient for positioning the position between the diversion inclined plate 5 and the cardboard storage device 4.

[0144] In some embodiments, the cardboard storage device 4 includes:

[0145] An outer groove body 41, on the inner cavity bottom surface of which a first electric push rod 42 is vertically fixedly assembled, and a support plate 43 is fixedly assembled to the telescopic upper end of the first electric push rod 42.

[0146] A receiving groove body 44 is fixedly assembled on one side of the upper surface of the pallet 43 away from the outer shell 11;

[0147] Longitudinal windows are symmetrically arranged on the side walls of the receiving groove body 44, and their upper ends extend to the upper edge of the receiving groove body 44.

[0148] Specifically in this embodiment, the first electric push rod 42 is connected to an external power supply and an external PLC controller to work;

[0149] Furthermore, when the first electric push rod 42 extends, it pushes the pallet 43 and the receiving groove body 44 to rise. The longitudinal windows are symmetrically arranged on both end faces in the length direction of the receiving groove body 44. Insert the hand into the longitudinal windows symmetrically arranged on the side walls of the receiving groove body 44. First, take out the multi-layer cardboard 7 stored on both sides of the receiving groove body 44, and then take out the multi-layer cardboard 7 located in the middle of the receiving groove body 44.

[0150] In some embodiments, a second electric push rod 45 is vertically and fixedly assembled on the upper end of the side wall of the outer groove body 41 close to the outer shell 11. Its telescopic end penetrates through the side wall of the outer groove body 41 and is fixedly connected to a vertical plate 46. At the same time, the side wall of the receiving groove body 44 is designed with an opening on the side close to the vertical plate 46, and the vertical plate 46 blocks and prevents blockage on the opening side of the side wall of the receiving groove body 44.

[0151] Specifically in this embodiment, the second electric push rod 45 is connected to an external power supply and an external PLC controller to work;

[0152] Furthermore, before use, the telescopic end of the second electric push rod 45 retracts to drive the vertical plate 46 to disengage from the opening of the side wall of the receiving groove body 44. After the receiving groove body 44 stores the multi-layer cardboard 7, the telescopic end of the second electric push rod 45 extends to the vertical plate 46 to block and prevent blockage on the opening side of the side wall of the receiving groove body 44. During this movement process, the multi-layer cardboard 7 stacked unevenly can be gathered;

[0153] More specifically, the side wall of the receiving groove body 44 is designed with an opening on the side close to the vertical plate 46, providing a more open receiving space for the receiving groove body 44, facilitating the multi-layer cardboard 7 guided by the diversion inclined plate 5 to slide into the receiving groove body 44 and then spread out flat in the receiving groove body 44, preventing the incoming multi-layer cardboard 7 from leaning against the inner wall of the receiving groove body 44 obliquely and affecting the utilization rate of the internal space of the receiving groove body 44.

[0154] In some embodiments, the roll forming device 3 includes:

[0155] An arched mounting frame 31, the lower end of which is fixedly assembled with a transverse mounting plate 2;

[0156] The transverse mounting plate 2 is fixedly assembled below the feeding window structure 12 on the outer wall of the outer shell 11;

[0157] A cardboard pressing roller assembly 34 is assembled on the inner wall of the arched mounting frame 31;

[0158] The top surface of the arched mounting frame 31 is transversely provided with a third strip-shaped through hole 32, and it is located between the cardboard pressing roller assembly 34 and the housing 11;

[0159] An elevating cutting mechanism 33 is fixedly assembled along the length direction of the upper edge of the third strip-shaped through hole 32, and its movable lower end passes through the third strip-shaped through hole 32 and extends below the height of the output end of the cardboard pressing roller assembly 34.

[0160] Specifically, in this embodiment, the cardboard pressing roller assembly 34 rolls and presses the preliminarily pasted multi-layer cardboard 7, so that the multi-layer cardboard 7 is compacted and preliminarily formed, and the discharging position of the cardboard pressing roller assembly 34 corresponds to the feeding window structure 12;

[0161] Furthermore, the elevating cutting mechanism 33 is used to cut the multi-layer cardboard 7 roll-pressed by the cardboard pressing roller assembly 34, so as to facilitate segmented entry into the housing 11 for drying and curing the glue;

[0162] It can be understood that the horizontal mounting plate 2 is used for the installation and fixation of the roll-forming device 3 to ensure its fixing stability.

[0163] In some embodiments, the cardboard pressing roller assembly 34 includes:

[0164] Strip-shaped mounting grooves 341, two of which are longitudinally and parallelly distributed;

[0165] The two strip-shaped mounting grooves 341 are respectively opened at the upper ends of the longitudinal two sides of the inner wall of the arched mounting frame 31;

[0166] A third screw 343 is rotatably connected along the length direction in one side strip-shaped mounting groove 341;

[0167] A fourth motor 342 is fixedly assembled on the top surface of the arched mounting frame 31 corresponding to the third screw 343, and its output lower end penetrates through the top surface of the arched mounting frame 31 and is fixedly connected to the upper end of the third screw 343;

[0168] A slider 344 is screwed on the outer wall of the third screw 343, and it is slidably assembled in the strip-shaped mounting groove 341 on the same side;

[0169] A slider 344 is slidably assembled in the strip-shaped mounting groove 341 on the other side where the third screw 343 is not provided;

[0170] 345 - Pressing rollers, two of which are arranged parallel up and down;

[0171] The two ends of the upper pressing roller 345 are rotatably connected to the opposite surfaces of the two side sliders 344;

[0172] The two ends of the lower pressing roller 345 are rotatably connected to the lower end of the inner wall of the arched mounting frame 31;

[0173] On the outer wall of the arched mounting bracket 31, a fifth motor 346 is fixedly assembled corresponding to the end of the lower pressing roller 345, and its output end penetrates through the outer wall of the arched mounting bracket 31 and is fixedly connected to the end of the lower pressing roller 345.

[0174] Specifically, in this embodiment, the fourth motor 342 and the fifth motor 346 are both servo motors, which are connected to an external power supply and an external PLC controller;

[0175] Furthermore, the gap between the upper and lower pressing rollers 345 is used for passing through multiple layers of cardboard 7, and the fifth motor 346 drives the lower pressing roller 345 to rotate to drive the multiple layers of cardboard 7 into the feeding window structure 12;

[0176] More specifically, the fourth motor 342 drives the slider 344 to move up and down along the third screw 343 in the strip-shaped mounting groove 341, and the slider 344 drives the upper pressing roller 345 to move up and down accordingly, adjusting the gap size between the upper and lower pressing rollers 345 to be the same as the thickness of the multiple layers of cardboard 7.

[0177] In some embodiments, the lifting and cutting mechanism 33 includes:

[0178] An L-shaped mounting plate 331, the longitudinal part of which is fixedly connected to the upper edge length direction of the third strip-shaped through hole 32;

[0179] On the top surface of the transverse part of the L-shaped mounting plate 331, a third electric push rod 332 is vertically fixedly assembled, and its telescopic lower end penetrates through the transverse part of the L-shaped mounting plate 331;

[0180] The telescopic lower end of the third electric push rod 332 is fixedly connected with a cutting tool head 333, and the lower end of the cutting tool head 333 passes through the third strip-shaped through hole 32 and extends below the height where the output end of the cardboard pressing roller assembly 34 is located.

[0181] Specifically, in this embodiment, the third electric push rod 332 is connected to an external power supply and an external PLC controller;

[0182] Furthermore, after the third electric push rod 332 drives the cutting tool head 333 to rise, the lower end is located above the height where the output end of the cardboard pressing roller assembly 34 is located, and the third electric push rod 332 drives the cutting tool head 333 to descend to be located below the height where the output end of the cardboard pressing roller assembly 34 is located, realizing the cutting and segmentation of the initially extruded and formed multiple layers of cardboard 7 output by the cardboard pressing roller assembly 34.

[0183] In some embodiments, the cutting tool head 333 includes:

[0184] A cavity tool head body 3331, in which a corrugated reinforcing plate 3332 is fixed;

[0185] Hollow through holes 3333 are evenly opened on the outer wall of the cavity tool head body 3331.

[0186] The setting of the cavity and the hollow through-hole 3333 is for reducing the overall weight of the cutting tool head 333, and at the same time, ensuring that the cutting tool head 333 has sufficient mechanical strength after weight reduction through the corrugated reinforcing plate 3332.

[0187] A multi-layer cardboard, made by the above cardboard forming device, includes:

[0188] Three honeycomb cardboard layers 71;

[0189] An interlayer fiber layer 72 is fixedly pasted between adjacent honeycomb cardboard layers 71;

[0190] The overall outer wall formed by the honeycomb cardboard layer 71 and the interlayer fiber layer 72 is coated with a composite functional layer 73.

[0191] Specifically in this embodiment, the reinforcing fiber layer 72 is made of carbon fiber or plant fiber to enhance the bonding strength of the paste;

[0192] Further, the three honeycomb cardboard layers 71 of the multi-layer cardboard 7 serve as the base layer, an interlayer fiber layer 72 is fixedly pasted between the three honeycomb cardboard layers 71 as the reinforcing layer, and the overall outer wall formed by the honeycomb cardboard layer 71 and the interlayer fiber layer 72 is coated with a composite functional layer 73 to enhance the functionality of the surface of the multi-layer cardboard 7.

[0193] In some embodiments, the composite functional layer 73 includes:

[0194] An antistatic coating 731, which is coated on the overall outer wall formed by the honeycomb cardboard layer 71 and the interlayer fiber layer 72;

[0195] A hydrophobic coating 732 is coated on the outer wall of the antistatic coating 731.

[0196] Specifically in this embodiment, the antistatic coating 731 is specifically a polyurethane antistatic coating, and the hydrophobic coating 732 is specifically a nano-silica coating;

[0197] Further, the antistatic coating 731 is used to enhance the antistatic ability of the multi-layer cardboard 7, and the hydrophobic coating 732 is used to enhance the waterproof ability of the multi-layer cardboard 7.

[0198] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cardboard forming device, characterized in that: include: The step-type lifting drying device comprises: The outer shell has an inner cavity equipped with a lifting tray mechanism; The upper and lower sides of the outer wall of the shell are respectively provided with a feed window structure and a discharge window structure; A roll forming device is fixedly mounted on the upper end of the outer wall of the housing, and its output end corresponds to the feed window structure; The top surface of the shell is fixedly connected to a hot air blower; A cardboard pushing structure is fixedly mounted at the lower end of the inner cavity of the shell; The hot air entering from the top of the shell and the hot air flowing back from the bottom are convected in the middle of the inner cavity thereof, and an exhaust duct is fixedly connected to the middle of the side wall of the shell; The movable part of the lifting tray mechanism holds the cardboard and descends from the upper part of the inner cavity of the shell to the cardboard pushing structure; The paperboard pushing structure cooperates with the lifting tray mechanism to push the dried paperboard out of the discharge window structure.

2. A cardboard forming device according to claim 1, characterized in that: The lifting tray mechanism comprises: A first motor is fixedly mounted on a side of the top surface of the housing away from the feed window structure; The lower end of the first motor output passes through the top surface of the housing and is fixedly connected to a first screw, the lower end of which extends to the lower end of the inner cavity of the housing; The outer wall of the first screw is threaded with a connecting plate, and one end of the first screw near the feed window structure is fixedly equipped with a mesh plate, and the end of the mesh plate near the feed window structure is slidably fitted with the inner wall of the shell; A baffle is fixedly mounted on the edge of the upper surface of the screen away from the feed window structure; The mesh plate and the baffle plate have a first strip-shaped through hole in the middle of the upper surface along the feeding direction; The width of the movable end of the paperboard pushing structure is the same as the width of the first strip-shaped through hole.

3. A paperboard forming device according to claim 2, characterized in that: The paperboard pushing structure comprises: A strip-shaped mounting plate, one end of which is close to the feed window structure and is fixedly assembled at the lower end of the inner cavity of the shell; The distance between the upper surface of the strip-shaped mounting plate and the bottom surface of the inner cavity of the discharge window structure is the same as the thickness of the screen plate; A second motor is fixedly mounted on the bottom surface of the strip-shaped mounting plate near the feeding window structure, and a second screw is fixedly connected to the output end thereof away from the feeding window structure; A second strip-shaped through hole is provided in the middle of the upper end of the strip-shaped mounting plate along the discharge direction; The outer wall of the second screw is threadedly connected with a push plate; The push plate is slidably assembled in the second strip-shaped through hole, and the second strip-shaped through hole extends out of the upper end of the push plate.

4. A paperboard forming device according to claim 1, characterized in that: The structure of the feed window structure is the same as that of the discharge window structure, and the feed window structure comprises: A strip-shaped material opening is transversely opened at the upper end of the outer wall of the shell; A silicone baffle is adhered and fixed to the outer edge of the top surface of the strip-shaped material opening, and the lower end of the silicone baffle is in contact with the bottom surface of the strip-shaped material opening.

5. A paperboard forming device according to claim 4, characterized in that: The outer side of the bottom surface of the strip-shaped material opening is evenly provided with installation grooves along the length direction; A third motor is fixedly mounted on the outer wall of the housing corresponding to the mounting groove, and a round rod is fixedly connected to the output end of the third motor; The round rod passes through the mounting groove; A driving roller is fixedly sleeved on the outer wall of the round rod corresponding to the mounting groove; The driving roller is located in the corresponding mounting groove, and the upper end of the driving roller extends out of the mounting groove.

6. A paperboard forming device according to claim 1, characterized in that: A cardboard storage device is provided outside the material discharging window structure of the shell; The lower edge of the outer wall of the discharge window structure is fixedly equipped with one end of a guide inclined plate, and the other end of the guide inclined plate extends to the upper edge of the paperboard storage device close to the shell; The upper surface of the guide inclined plate is inclined from the discharge window structure toward the paperboard storage device.

7. A paperboard forming device according to claim 6, characterized in that: The cardboard storage device comprises: The outer tank body has a first electric push rod fixedly mounted vertically on the inner cavity bottom surface thereof, and a support plate fixedly mounted on the telescopic upper end thereof; A storage tank is fixedly mounted on the upper surface of the support plate away from the housing; The side walls of the storage tank body are symmetrically provided with longitudinal windows, the upper ends of which extend to the upper edge of the storage tank body.

8. A paperboard forming device according to claim 1, characterized in that: The roll forming device comprises: An arched mounting frame, a transverse mounting plate being fixedly mounted on the lower end thereof; The transverse mounting plate is fixedly mounted below the feed window structure on the outer wall of the housing; The inner wall of the arched mounting frame is equipped with a cardboard pressing roller assembly; A third strip-shaped through hole is transversely opened on the top surface of the arched mounting frame and is located between the paperboard pressing roller assembly and the housing; A lifting and cutting mechanism is fixedly mounted in the length direction of the upper edge of the third strip through hole, and the movable lower end thereof passes through the third strip through hole and extends to below the height where the output end of the paperboard pressing roller assembly is located.

9. A multi-layer paperboard, made by using the paperboard forming device according to any one of claims 1 to 8, characterized in that: include: There are three honeycomb paperboard layers; An interlayer fiber layer is pasted and fixed between adjacent honeycomb paperboard layers; The integral outer wall formed by the honeycomb paperboard layer and the interlayer fiber layer is coated with a composite functional layer.

10. The multi-layer paperboard according to claim 9, characterized in that: The composite functional layer comprises: An antistatic coating is applied to the overall outer wall composed of the honeycomb paperboard layer and the interlayer fiber layer; The outer wall of the antistatic coating is coated with a hydrophobic coating.

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