A kind of moisture-proof corrugated paper continuous line marking device and method

Abstract

The present application relates to a kind of damp-proof corrugated paper continuous line pressing device and method, and it is related to the technical field of corrugated paper processing;Including line pressing mechanism, it includes the active line pressing wheel that the upper end surface of corrugated paper is pressed and the passive line pressing wheel that the bottom of corrugated paper is supported, active line pressing wheel and passive line pressing wheel are also commonly provided with heat compensation type double cavity component to heat treatment;The present application is ring-shaped in the inside of active line pressing wheel Cavity, high heat-conducting metal powder is filled in closed cavity, eddy current heating is realized by the electromagnetic induction coil of end portion, in very short time, it is heated to specified temperature, greatly guarantee the stability of active line pressing wheel hot pressing, and electromagnetic induction local heating is energy saving than traditional electric heating tube, reduce the consumption of energy.Further, the active line pressing wheel of different thickness and the passive line pressing wheel can also be quickly replaced, greatly improve the applicability of device.

Description

Technical Field

[0001] This invention relates to the technical field of corrugated paper processing, and in particular to a continuous pressing device and method for moisture-proof corrugated paper. Background Technology

[0002] Moisture-proof corrugated paper is a material made from corrugated paper through special treatment or structural design to improve its moisture-proof performance. It is widely used in the packaging industry, especially in situations where it is necessary to protect moisture-sensitive items.

[0003] The production of corrugated paper requires a continuous corrugated paper pressing device, whose main function is to fold, press and seal the corrugated paperboard through the pressing process to form a complete finished carton.

[0004] For example, Chinese patent CN110625993B discloses a high-strength, folding-resistant corrugated cardboard forming device, including a machine frame, a feeding conveyor belt movably mounted on the machine frame, a discharging conveyor belt movably mounted at the end of the machine frame away from the feeding conveyor belt, a forming base plate fixedly mounted between the discharging conveyor belt and the feeding conveyor belt, a drive box fixedly mounted on the outer side of the machine frame near the feeding conveyor belt, a maintenance door movably mounted on the outer side of the drive box, a drive motor fixedly mounted inside the drive box, an output steering wheel movably mounted at one end of the drive motor, and a positioning and fixing frame movably mounted at the end of the output steering wheel away from the drive motor. This high-strength, folding-resistant corrugated cardboard forming device is easy to operate, increases the speed of the entire processing work, improves work efficiency, reduces safety hazards, and helps enterprises reduce operating costs.

[0005] However, the above-mentioned device still has some shortcomings in actual use:

[0006] 1. Firstly, in the above-mentioned prior art, the corrugated paper is pressed by forming rollers. However, when the forming rollers are rolling and pressing, the uneven pressure on the corrugated paper often results in uneven pressing lines on the corrugated paper. When the pressure is low, the indentation on the surface of the corrugated paper will be unclear; when the pressure is high, the indentation on the surface of the corrugated paper will be too deep, directly causing the cardboard to deform.

[0007] 2. Secondly, when existing traditional forming rollers crease corrugated paper, they usually use electric heating to control the temperature of the forming rollers. This not only requires continuous heating during crease ...

[0008] 3. Subsequently, the existing device has a single pressing device with only a single-sized forming roller, which results in a fixed pressing size that cannot be adjusted. Furthermore, the operation of replacing the forming roller is not only complicated, but the replacement process can also easily damage some heating wires on the surface of the forming roller, further resulting in poor applicability of the device.

[0009] Therefore, based on the above-stated viewpoints, there is still room for improvement in existing devices. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides a continuous creasing device and method for moisture-proof corrugated paper, employing the following technical solution:

[0011] In one aspect, this application provides a moisture-proof corrugated paper continuous pressing device, including a stationary workbench.

[0012] A continuous conveying mechanism is used for the continuous conveying of corrugated paper and for the electrostatic elimination of the corrugated paper. The continuous conveying mechanism includes two sets of symmetrically distributed conveyor belts. V-shaped guide grooves are opened on the conveyor belts. Several copper-tungsten alloy discharge needles are distributed on the side walls of the V-shaped guide grooves to eliminate the electrostatic adsorption of the paperboard through high-frequency pulses.

[0013] The creasing mechanism enables creasing operations on corrugated paper at different angles. The creasing mechanism includes an active creasing wheel that presses the upper surface of the corrugated paper and a passive creasing wheel that supports the bottom of the corrugated paper. Both the active and passive creasing wheels are equipped with a heat-compensated dual-cavity assembly for heating.

[0014] Preferably, the continuous conveying mechanism further includes an energized plate, and a conductive plate is mounted on one side of the copper-tungsten alloy discharge needle. The conductive plate movably abuts against the energized plate, which is mounted on the workbench and has an energizing device connected to it via a wire.

[0015] Preferably, the continuous conveying mechanism is further provided with a lifting mechanism, which includes a lifting electric push rod. The output end of the lifting electric push rod faces upward and is equipped with a lifting frame. The lifting frame is equipped with lifting discs arranged in a rectangular pattern. The lifting discs are equipped with lifting motors. Several reversing wheels are arranged at equal intervals on the lifting discs. The lifting motors are connected to the reversing wheels and control the direction of the corrugated paper through the reversing wheels.

[0016] Preferably, the inner and outer sides of the workbench are equipped with moving frames that control the active and passive pressing wheels to move in multiple directions. The two moving frames are equipped with control frames, and two symmetrical telescopic columns are installed on the inner side of the control frames. An inverted cylinder is installed on one side of each of the two telescopic columns. The two inverted cylinders move against the active and passive pressing wheels. Annular grooves for inserting and limiting the inverted cylinders are provided on both sides of the active and passive pressing wheels.

[0017] Guide columns and guide screws are installed on the control frame. The guide columns and guide screws pass through the control frame and are connected to the outer wall of the U-shaped cylinder. The guide screws are screwed to the control frame.

[0018] Preferably, several fixing plates are installed on the opposite side of the two C-shaped cylinders, and several balls are installed on the fixing plates at equal intervals. The side of the fixing plate closest to the balls is inserted into the annular groove.

[0019] Preferably, the heat-compensated dual-cavity assembly includes an insulating plate, an active crimping wheel with a hollow structure, and an insulating plate integrally installed in the inner cavity of the active crimping wheel to divide the inner cavity of the active crimping wheel into two mutually isolated chambers. The outer chamber is a closed annular structure, while the inner chamber is a movable chamber. High thermal conductivity metal powder is installed in the annular closed chamber. The heat emitted by the high thermal conductivity metal powder is transferred to the active crimping wheel, which facilitates the active crimping wheel to heat-press the corrugated paper.

[0020] Preferably, a number of electromagnetic induction coils are also provided in the sealed cavity of the active pressing wheel. An electrode plate is installed on the electromagnetic induction coil through a wire. The electrode plate is attached to the outer wall of the active pressing wheel. An annular electrode plate is attached to the side wall of the active pressing wheel so that it is in movable contact with the electrode plate and ensures that the electromagnetic induction coil is energized and de-energized during the rotation of the active pressing wheel.

[0021] Preferably, a meter-shaped limiting frame is installed in the movable cavity of the active pressing wheel. An electromagnet that generates magnetism when energized is installed in the cavity formed by the limiting frame. The electromagnet is connected to a second electrode plate through a wire. The second electrode plate is attached to the outer wall of the active pressing wheel, and the first electrode plate and the second electrode plate are staggered. A second annular electrode plate is attached to the side wall of the active pressing wheel, so that it makes active contact with the second electrode plate.

[0022] Preferably, the active pressing wheel is also provided with a dynamic anti-sticking mechanism. The dynamic anti-sticking mechanism includes annular grooves evenly spaced on the surface of the active pressing wheel, and the annular grooves are also provided with an inlet and outlet that communicate with the outside and integrates air inlet and outlet.

[0023] An air vent frame is movably abutted against the top of the active crimping roller. An air pump is connected to the end of the air vent frame away from the active crimping roller via a pipe. The air pump is mounted on a movable frame.

[0024] Secondly, this application provides a method for continuous creasing of moisture-proof corrugated paper, as shown below:

[0025] S1. Pre-treatment: First, cut the corrugated paper to ensure that the corrugated paper is of uniform size;

[0026] S2. Continuous conveying: The prepared corrugated paper is placed on the conveyor belt of the continuous conveying mechanism and conveyed at a constant speed. After the corrugated paper moves to the designated processing area, the lifting mechanism lifts it so that the corrugated paper is suspended in the air.

[0027] S3. Creasing Operation: Next, the active crease roller and the passive crease roller in the crease mechanism approach each other and crease the corrugated paper through the crease mechanism.

[0028] S4. Cyclic Operation: After the corrugated paper has completed the creasing process, the lifting mechanism places the creasing paper back onto the conveyor belt and transports it to a unified collection point. Meanwhile, other corrugated paper awaiting creasing on the conveyor belt is moved to a designated processing area for processing, thus achieving continuous creasing operation of corrugated paper.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] I. This invention features an annular sealed cavity inside the active pressing wheel, filled with highly thermally conductive metal powder. Eddy current heating is achieved through an electromagnetic induction coil at the end, raising the temperature to the specified temperature in a very short time. This greatly ensures the stability of the hot pressing of the active pressing wheel. Furthermore, the localized electromagnetic induction heating is more energy-efficient than traditional electric heating tubes, reducing energy consumption.

[0031] Second, the dynamic anti-sticking mechanism of the present invention impacts the corrugated paper through air jets, preventing the corrugated paper from sticking to the passive and active crimping rollers when the active and passive crimping rollers are hot-pressed. The anti-sticking is achieved through mechanical structure design, while avoiding the chemical coating sprayed on the surface of the active and passive crimping rollers for anti-sticking in traditional technology. Furthermore, it avoids the chemical coating from decomposing and contaminating the corrugated paper due to prolonged exposure to high temperatures.

[0032] Third, the active and passive crimping rollers of the present invention can be limited by two I-shaped cylinders controlled by the guide screw. Furthermore, the cooperation between the I-shaped cylinders and the guide screw can enable rapid switching between the active and passive crimping rollers, allowing for quick replacement of active and passive crimping rollers of different thicknesses, which greatly improves the applicability of the device. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] Figure 1 This is a first-view structural diagram of the main body of the invention.

[0035] Figure 2 This is a second-view structural diagram of the main body of the invention.

[0036] Figure 3 This is a schematic diagram of the continuous conveying mechanism of the present invention.

[0037] Figure 4 This is the present invention. Figure 3 Enlarged view of the local structure at point B in the image.

[0038] Figure 5 This is a schematic diagram of the structure between the wire pressing mechanism and the thermally compensated dual-cavity assembly of the present invention.

[0039] Figure 6 This is a schematic diagram of the structure between the thermally compensated dual-cavity assembly and the dynamic anti-sticking mechanism of the present invention.

[0040] Figure 7 This is a schematic diagram of the structure of the first electrode sheet, the first annular electrode sheet, the second electrode sheet, and the second annular electrode sheet of the present invention.

[0041] Figure 8 This is a first-view structural diagram of the internal structure of the active pressing wheel of the present invention.

[0042] Figure 9 This is a second-view structural diagram of the internal structure of the active pressing wheel of the present invention.

[0043] Figure 10 This is a flowchart of the continuous creasing method for moisture-proof corrugated paper according to the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Workbench; 2. Continuous conveying mechanism; 20. Conveyor belt; 21. V-shaped guide groove; 23. Copper-tungsten alloy discharge needle; 3. Wire pressing mechanism; 30. Active wire pressing wheel; 31. Passive wire pressing wheel; 4. Thermally compensated dual-cavity assembly; 24. Electrically conductive plate; 25. Conductive plate; 26. Lifting mechanism; 260. Lifting electric push rod; 261. Lifting frame; 262. Lifting disc; 263. Lifting motor; 264. Reversing wheel; 40. Isolation plate; 41. Sealed cavity; 42. Movable cavity; 43. High thermal conductivity metal powder 44. Moving frame; 45. Control frame; 46. Telescopic column; 47. C-shaped cylinder; 48. Annular groove; 450. Guide column; 451. Guide screw; 452. Fixing plate; 453. Ball bearing; 300. Electromagnetic induction coil; 301. Electrode No. 1; 302. Annular electrode No. 1; 303. Limiting frame; 304. Electromagnet; 305. Electrode No. 2; 306. Annular electrode No. 2; 5. Dynamic anti-sticking mechanism; 50. Annular groove; 51. Inlet and outlet; 52. Air outlet frame; 53. Air pump. Detailed Implementation

[0046] The following combination Figures 1-10 This application will be described in further detail.

[0047] This application discloses a continuous creasing device and method for moisture-proof corrugated paper. The continuous creasing device is mainly used in the creasing process of corrugated paper A. However, in the prior art, creasing of corrugated paper A is performed using a forming roller, which easily leads to unclear indentations and paperboard deformation. Secondly, existing traditional heating creasing methods are energy-intensive, and uneven temperatures can easily cause localized carbonization of the paperboard. Furthermore, existing devices have a single creasing mechanism and cannot replace the forming roller, resulting in poor applicability of the device.

[0048] Reference Figure 1 and Figure 2 The diagram shown is a structural schematic of the moisture-proof corrugated paper continuous pressing device in this application, which includes a stationary workbench 1.

[0049] The equipment is supported by a stationary workbench 1. Four adjustable feet (not shown) are installed at the bottom of the workbench 1, allowing for height adjustment via rotating the adjusting bolts to ensure stability under different ground conditions. A continuous conveying mechanism 2 and a crimping mechanism 3 are respectively installed on both sides of the workbench 1 along its length (i.e., the direction of corrugated paper A transport) to meet the processing requirements of corrugated paper A of different specifications.

[0050] Reference Figure 3 and Figure 4 As shown, the continuous conveying mechanism 2 is used for the continuous conveying of corrugated paper A and for the electrostatic elimination of corrugated paper A. The continuous conveying mechanism 2 includes two sets of symmetrically distributed conveyor belts 20. V-shaped guide grooves 21 are opened on the conveyor belts 20. Several copper-tungsten alloy discharge needles 23 are distributed on the side wall of the V-shaped guide grooves 21 to eliminate the electrostatic adsorption of the paperboard through high-frequency pulses.

[0051] The two sets of symmetrical conveyor belts 20 of the continuous conveying mechanism 2 are made of food-grade rubber. The V-shaped guide groove 21 not only guides the edges of the corrugated paper A to align, but also assists in adsorbing the corrugated paper A through the airflow channel inside the groove, preventing deviation during conveying. Furthermore, the copper-tungsten alloy discharge needle 23 also ensures the stability of its conveying on the conveyor belt 20.

[0052] On the upper surface of the conveyor belt 20, copper-tungsten alloy discharge needles 23 are evenly distributed along the V-shaped guide groove 21. The copper-tungsten alloy discharge needles 23 are in contact with the energized plate 24 through the conductive plate 25. The energized plate 24 is made of copper and is fixed to both sides of the workbench 1 by an insulating bracket. The energizing device (not shown) is a high-frequency pulse power supply, which causes the copper-tungsten alloy discharge needles 23 to form a corona discharge with the surface of the corrugated paper A, quickly neutralizing the static electricity on the surface of the corrugated paper A and eliminating the adsorption phenomenon.

[0053] See Figure 5As shown, the creasing mechanism 3 realizes the creasing operation of corrugated paper A at different angles. The creasing mechanism 3 includes an active creasing wheel 30 that presses the upper surface of corrugated paper A and a passive creasing wheel 31 that supports the bottom of corrugated paper A. The active creasing wheel 30 and the passive creasing wheel 31 are also equipped with a heat-compensated double-cavity assembly 4 for heating treatment.

[0054] The present invention has an annular sealed cavity 41 inside the active pressing wheel 30, which is filled with high thermal conductivity metal powder 43. Eddy current heating is achieved by the electromagnetic induction coil 300 at the end, which heats it to the specified temperature in a very short time, greatly ensuring the stability of hot pressing of the active pressing wheel 30. Moreover, the local electromagnetic induction heating is more energy-efficient than the traditional electric heating tube, reducing energy consumption.

[0055] Looking back Figure 3 and Figure 4 As shown, specifically, the continuous conveying mechanism 2 also includes an energized plate 24. A conductive plate 25 is mounted on one side of the copper-tungsten alloy discharge needle 23. The conductive plate 25 is movably mounted on the energized plate 24. The energized plate 24 is mounted on the workbench 1 and is equipped with an electrical device via a wire.

[0056] It should be noted that the power supply is a known high-frequency pulse power source, mainly composed of external mains power.

[0057] Initially, the conductive sheet 24 and the energized sheet 25 are separated. When the conveyor belt 20 controls the corrugated paper A to move to the designated processing area, the conductive sheet 25 and the energized sheet 24 will come into contact. At this time, the energizing device controls the copper-tungsten alloy discharge needle 23 to discharge through the conductive sheet 25 and the energized sheet 24, so that the copper-tungsten alloy discharge needle 23 forms a corona discharge with the surface of the corrugated paper A, which quickly neutralizes the static electricity on the surface of the corrugated paper A and eliminates the adsorption phenomenon.

[0058] Reference Figure 5 As shown, specifically, the continuous conveying mechanism 2 is also provided with a lifting mechanism 26. The lifting mechanism 26 includes a lifting electric push rod 260. The output end of the lifting electric push rod 260 faces upward and is equipped with a lifting frame 261. The lifting frame 261 is equipped with lifting disks 262 arranged in a rectangular pattern. The lifting disks 262 are equipped with lifting motors 263. Several reversing wheels 264 are evenly spaced on the lifting disks 262. The lifting motors 263 are connected to the reversing wheels 264 and control the direction of the corrugated paper A through the reversing wheels 264.

[0059] A lifting mechanism 26 is installed in the middle processing area of ​​the conveyor belt 20. This mechanism includes two sets of symmetrically distributed lifting electric push rods 260, which are driven by servo motors and have high positioning accuracy. The output end of the lifting electric push rod 260 is connected to the lifting frame 261, and four rectangularly distributed lifting discs 262 are installed at the bottom of the frame, with lifting motors 263 embedded inside. The surface of the lifting discs 262 is equipped with reversing wheels 264, which are made of polyurethane and have a high surface roughness. When the corrugated paper A is conveyed to the designated position, the lifting electric push rods 260 rise, the reversing wheels 264 contact the bottom surface of the corrugated paper A, and the motor reverses direction to achieve ±90° rotation of the corrugated paper A, meeting the requirements of multi-angle pressing.

[0060] Reference Figure 6 As shown, specifically, the inner and outer sides of the workbench 1 are provided with moving frames 44 for controlling the active pressing wheel 30 and the passive pressing wheel 31 to move in multiple directions. The two moving frames 44 are provided with control frames 45. The inner side of the control frame 45 is equipped with two symmetrical telescopic columns 46. On the opposite side of the two telescopic columns 46, an inverted cylinder 47 is installed. The two inverted cylinders 47 move against the active pressing wheel 30 and the passive pressing wheel 31. The active pressing wheel 30 and the passive pressing wheel 31 are provided with annular grooves 48 on both sides for the inverted cylinder 47 to be inserted and limited.

[0061] Guide posts 450 and guide screws 451 are respectively installed on the control frame 45. The guide posts 450 and guide screws 451 pass through the control frame 45 and are connected to the outer wall of the U-shaped cylinder 47. The guide screws 451 are screwed to the control frame 45.

[0062] The core of the pressing mechanism 3 consists of the active pressing wheel 30 and the passive pressing wheel 31, both made of mold steel with high surface hardness. The active pressing wheel 30 and the passive pressing wheel 31 are adjustable in multiple directions via a moving frame 44. The moving frame 44 is supported by linear slide rails on the inner and outer sides of the worktable 1 and can move along the length (X-axis), width (Y-axis), and height (Z-axis) directions. The movement accuracy is controlled by a servo motor. Therefore, by using two moving frames 44, the active pressing wheel 30 and the passive pressing wheel 31 can be brought closer together and the pressing operation can be performed, greatly improving the flexibility of the pressing device.

[0063] Several fixing plates 452 are installed on the opposite side of the two C-shaped cylinders 47. Several balls 453 are installed on the fixing plates 452 at equal intervals. The side of the fixing plate 452 closest to the balls 453 is inserted into the annular groove 48.

[0064] When it is necessary to replace the active or passive crimping roller 30, loosen the guide screw 451. The telescopic column 46 controls the inverted cylinder 47 to move away from the active or passive crimping roller 30 or 31, allowing for quick removal of the old roller and installation of the new roller. A single replacement can be completed within one minute. When a new roller needs to be replaced, reverse the guide screw 451, causing the fixing plate 452 on the inverted cylinder 47 to insert into the annular groove 48 of the active or passive crimping roller 30 or 31. The balls 453 on the fixing plate 452 abut against the active or passive crimping roller 30 or 31, reducing friction between them. The fixing plate 452 improves the stability of the connection between the inverted cylinder 47 and the active or passive crimping roller 30 or 31 while ensuring the rotational operation of the active or passive crimping roller 30 or 31 during movement.

[0065] Reference Figure 7 and Figure 8 As shown, specifically, the thermally compensated dual-cavity assembly 4 includes an insulating plate 40, an active crimping wheel 30 with a hollow structure, and an insulating plate 40 integrally installed in the inner cavity of the active crimping wheel 30 to divide the inner cavity of the active crimping wheel 30 into two mutually isolated chambers. The outer chamber is a ring-shaped sealed cavity 41, and the inner chamber is a movable cavity 42. The ring-shaped sealed cavity 41 is filled with high thermal conductivity metal powder 43. The heat emitted by the high thermal conductivity metal powder 43 is transferred to the active crimping wheel 30, which facilitates the active crimping wheel 30 to hot-press the corrugated paper A.

[0066] The active pressure roller 30 has a hollow structure, internally divided into an outer sealed cavity 41 and an inner movable cavity 42 by an insulating plate 40. The sealed cavity 41 is annular and filled with high thermal conductivity metal powder 43. An electromagnetic induction coil 300 is uniformly wound around the outer wall of the sealed cavity 41, and is electrically connected to an annular electrode 302 via an electrode plate 301. When an alternating current is applied to the coil, eddy currents are generated in the metal powder. According to Joule's law, eddy current losses are converted into heat energy, allowing the surface of the active pressure roller 30 to heat up to the specified temperature in a short time (monitored in real time by a temperature controller). This heating method is more efficient and reduces energy consumption compared to traditional electric heating tubes.

[0067] Furthermore, the high thermal conductivity metal powder 43 also has a certain heat retention effect, reducing the rate of temperature cooling. At the same time, using the high thermal conductivity metal powder 43 as a medium can avoid the situation where the active pressure roller 30 is directly heated, resulting in uneven temperature distribution and uncontrollable conditions.

[0068] Reference Figure 8As shown, several electromagnetic induction coils 300 are also provided in the sealed cavity 41 of the active pressing wheel 30. An electrode plate 301 is connected to the electromagnetic induction coil 300 by a wire. The electrode plate 301 is attached to the outer wall of the active pressing wheel 30. An annular electrode plate 302 is attached to the side wall of the active pressing wheel 30, so that it is in contact with the electrode plate 301 and ensures that the electromagnetic induction coil 300 is switched on and off during the rotation of the active pressing wheel 30.

[0069] It should be noted that both the first annular electrode 302 and the second annular electrode 306 are connected to external power supply equipment, while the first electrode 301 and the second electrode 305 abut against the first annular electrode 302 and the second annular electrode 306. The purpose of this is to ensure that the electromagnetic induction coil 300 inside the active pressure wheel 30 can be easily switched on and off when it rotates.

[0070] Furthermore, it allows for easy replacement of active pressure rollers 30 with different thicknesses and sizes.

[0071] Let's look again. Figure 7 and Figure 8 As shown, a meter-shaped limiting frame 303 is installed in the movable cavity 42 of the active pressing wheel 30. An electromagnet 304 that generates magnetism when energized is installed in the cavity formed by the limiting frame 303. The electromagnet 304 is connected to a second electrode plate 305 through a wire. The second electrode plate 305 is attached to the outer wall of the active pressing wheel 30, and the first electrode plate 301 and the second electrode plate 305 are staggered. A second annular electrode plate 306 is attached to the side wall of the active pressing wheel 30, so that it makes active contact with the second electrode plate 305.

[0072] A meter-shaped limiting frame 303 is installed inside the movable cavity 42, with an electromagnet 304 mounted at its center. The electromagnet is powered by a second electrode plate 305 and a second annular electrode plate 306. The magnetic field generated by the electromagnet 304 helps to adjust the heat flow distribution inside the active pressing wheel 30. Combined with the thermal conductivity of the sealed cavity 41, this keeps the surface temperature uniformity error of the active pressing wheel 30 within a small range.

[0073] Reference Figure 9 As shown, the active pressing wheel 30 is also provided with a dynamic anti-sticking mechanism 5. The dynamic anti-sticking mechanism 5 includes annular grooves 50 that are equally spaced on the surface of the active pressing wheel 30, and the annular grooves 50 are also provided with an inlet and outlet 51 that communicate with the outside and integrates air inlet and outlet.

[0074] The top of the active pressing wheel 30 is movably abutted against the air outlet frame 52. The end of the air outlet frame 52 away from the active pressing wheel 30 is connected to an air pump 53 through a pipe. The air pump 53 is mounted on the movable frame 44.

[0075] The surface of the active pressure roller 30 has an annular groove 50, and each groove has an inlet / outlet 51 at the bottom that connects to the internal air passage (e.g., Figure 9 (As shown). When the active creasing wheel 30 rotates, the air pump 53 periodically injects compressed air into the groove, forming a pulse jet through the inlet and outlet 51, which forms an air film on the contact surface between the active creasing wheel 30 and the corrugated paper A, effectively preventing the corrugated paper A from sticking.

[0076] Compared with traditional chemical coating anti-sticking technology, our organization does not need to use any chemical coating, thus avoiding the decomposition of the coating at high temperatures and the generation of toxic substances that contaminate the corrugated paper A.

[0077] This application solves the problems of low heating efficiency, paper adhesion, and poor equipment applicability in traditional corrugated paper A pressing processes through the synergistic design of electromagnetic induction heating technology, pulse jet anti-sticking mechanism, and quick-change structure. Its technical solution not only improves production efficiency and product quality but also meets the environmental requirements of green manufacturing, and can be widely applied to automated production lines for corrugated paper A preparation.

[0078] Reference Figure 10 The continuous creasing method for moisture-proof corrugated paper is shown below:

[0079] S1. Pre-treatment: First, the base paper is cut using a high-precision cross-cutting machine. The cut corrugated paper A needs to be left to stand for 2 hours in a constant temperature and humidity environment to eliminate internal stress.

[0080] S2. Continuous conveying: The prepared corrugated paper A is placed on the conveyor belt 20 of the continuous conveying mechanism 2 and conveyed at a constant speed. After the corrugated paper A moves to the designated processing area, the lifting mechanism 26 lifts it, so that the corrugated paper A is in a suspended state.

[0081] The conveyor belt 20 starts rotating at a constant speed, and the prepared corrugated paper A is placed on the conveyor belt 20 of the continuous conveying mechanism 2 for uniform conveying. When the front end of the corrugated paper A reaches the designated processing area, the lifting electric push rod 260 is raised, and the reversing wheel 264 of the lifting disc 262 contacts the bottom surface of the corrugated paper A, so that the corrugated paper A is in a suspended state.

[0082] S3. Creasing Operation: When corrugated paper A enters the crease area, the moving frame 44 drives the active crease roller 30 and the passive crease roller 31 to move towards each other until they contact the corrugated paper A. The electromagnetic induction coil 300 is simultaneously energized and heated. When the surface temperature of the active crease roller 30 reaches the specified temperature, the crease operation begins along the surface of the corrugated paper.

[0083] S4. Cyclic Operation: After the corrugated paper A has been crimped, it falls back to the conveyor belt 20 via the lifting mechanism 26. Then, the conveyor belt 20 starts to control the corrugated paper A to continue moving and is collected at a designated location. At the same time, the next corrugated paper A to be processed has been conveyed to the designated location. The entire cycle can achieve a continuous operation efficiency of multiple corrugated paper A per minute.

[0084] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A continuous pressing device for moisture-proof corrugated paper, characterized in that: Includes a stationary workbench (1); The continuous conveying mechanism (2) is used for continuous conveying of corrugated paper and for electrostatic elimination of corrugated paper. The continuous conveying mechanism (2) includes two sets of symmetrically distributed conveyor belts (20). V-shaped guide grooves (21) are provided on the conveyor belts (20). Several copper-tungsten alloy discharge needles (23) are distributed on the side wall of the V-shaped guide grooves (21) to eliminate electrostatic adsorption of paperboard through high-frequency pulses. The creasing mechanism (3) enables the creasing of corrugated paper at different angles. The creasing mechanism (3) includes an active creasing wheel (30) that presses the upper surface of the corrugated paper and a passive creasing wheel (31) that supports the bottom of the corrugated paper. The active creasing wheel (30) and the passive creasing wheel (31) are also equipped with a heat-compensated double-cavity assembly (4) for heating. The continuous conveying mechanism (2) is also provided with a lifting mechanism (26). The lifting mechanism (26) includes a lifting electric push rod (260). The output end of the lifting electric push rod (260) faces upward and is equipped with a lifting frame (261). The lifting frame (261) is equipped with a lifting disk (262) arranged in a rectangular pattern. The lifting disk (262) is equipped with a lifting motor (263). Several reversing wheels (264) are arranged at equal intervals on the lifting disk (262). The lifting motor (263) is connected to the reversing wheel (264) and controls the direction of the corrugated paper through the reversing wheel (264). The inner and outer sides of the workbench (1) are equipped with a moving frame (44) that controls the active pressing wheel (30) and the passive pressing wheel (31) to move in multiple directions. The heat-compensated dual-cavity assembly (4) includes an insulating plate (40), the active crimping wheel (30) is a hollow structure, and the inner cavity of the active crimping wheel (30) is integrally installed with an insulating plate (40) that divides the inner cavity of the active crimping wheel (30) into two mutually isolated cavities. The outer cavity is a closed cavity (41) with an annular structure, and the inner cavity is a movable cavity (42). The closed cavity (41) is filled with high thermal conductivity metal powder (43). The heat emitted by the high thermal conductivity metal powder (43) is transferred to the active crimping wheel (30), which facilitates the active crimping wheel (30) to hot-press the corrugated paper. Several electromagnetic induction coils (300) are also provided in the sealed cavity (41) of the active pressing wheel (30). An electrode plate (301) is connected to the electromagnetic induction coil (300) by a wire. The electrode plate (301) is attached to the outer wall of the active pressing wheel (30). An annular electrode plate (302) is attached to the side wall of the active pressing wheel (30) so that it is in contact with the electrode plate (301) and ensures that the electromagnetic induction coil (300) is switched on and off during the rotation of the active pressing wheel (30). Inside the active pressing wheel (30), there are meter-shaped limiting frames (303). Inside the cavity formed by the limiting frames (303), there are electromagnets (304) that generate magnetism when energized. The electromagnets (304) are connected to the second electrode plate (305) through wires. The second electrode plate (305) is attached to the outer wall of the active pressing wheel (30), and the first electrode plate (301) and the second electrode plate (305) are staggered. The second annular electrode plate (306) is attached to the side wall of the active pressing wheel (30), so that it is in active contact with the second electrode plate (305). The active pressing wheel (30) is also provided with a dynamic anti-sticking mechanism (5). The dynamic anti-sticking mechanism (5) includes annular grooves (50) evenly spaced on the surface of the active pressing wheel (30). The annular grooves (50) are also provided with an inlet and outlet (51) that communicate with the outside and integrate air inlet and outlet. The top of the active pressing wheel (30) is movably abutted against an air outlet frame (52). The end of the air outlet frame (52) away from the active pressing wheel (30) is connected to an air pump (53) through a pipe. The air pump (53) is set on a movable frame (44).

2. The continuous pressing device for moisture-proof corrugated paper according to claim 1, characterized in that: The continuous conveying mechanism (2) also includes an electrified plate (24), and a conductive plate (25) is installed on one side of the copper-tungsten alloy discharge needle (23). The conductive plate (25) moves against the electrified plate (24). The electrified plate (24) is mounted on the workbench (1) and an electrified device is provided on the electrified plate (24) through a wire.

3. The continuous pressing device for moisture-proof corrugated paper according to claim 1, characterized in that: Two movable frames (44) are equipped with control frames (45). Two symmetrical telescopic columns (46) are installed on the inner side of the control frames (45). An inverted cylinder (47) is installed on the opposite side of the two telescopic columns (46). The two inverted cylinders (47) move against the active pressing wheel (30) and the passive pressing wheel (31). Both sides of the active pressing wheel (30) and the passive pressing wheel (31) are provided with annular grooves (48) for the inverted cylinder (47) to be inserted and limited. The control frame (45) is equipped with guide posts (450) and guide screws (451). The guide posts (450) and guide screws (451) pass through the control frame (45) and are connected to the outer wall of the U-shaped cylinder (47). The guide screws (451) are screwed to the control frame (45).

4. The continuous pressing device for moisture-proof corrugated paper according to claim 3, characterized in that: Several fixing plates (452) are installed on the opposite side of the two C-shaped cylinders (47). Several balls (453) are installed on the fixing plates (452) at equal intervals. The side of the fixing plate (452) near the balls (453) is inserted into the annular groove (48).

5. A method for continuous creasing of moisture-proof corrugated paper, using a continuous creasing device for moisture-proof corrugated paper as described in any one of claims 1-4, characterized in that: The continuous creasing method for moisture-proof corrugated paper is as follows: S1. Pre-treatment: First, cut the corrugated paper to ensure that the corrugated paper is of uniform size; S2, Continuous conveying: The prepared corrugated paper is placed on the conveyor belt (20) of the continuous conveying mechanism (2) and conveyed at a constant speed. After the corrugated paper moves to the designated processing area, the lifting mechanism (26) lifts it so that the corrugated paper is suspended in the air. S3, Creasing Operation: Then the active Creasing wheel (30) and the passive Creasing wheel (31) in the Creasing Mechanism (3) approach each other and crease the corrugated paper through the Creasing Mechanism (3); S4. Cyclic operation: After the corrugated paper has completed the crimping operation, the lifting mechanism (26) puts the crimped corrugated paper back onto the conveyor belt (20) and transports it to a unified collection point. Meanwhile, other corrugated papers waiting to be crimped on the conveyor belt (20) are moved to the designated processing area for processing, thereby realizing continuous crimping operation of corrugated paper.

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