Detection device for corrugated paper and corrugated paper machine

Abstract

The invention is suitable for the technical field of laser measurement, and provides a detection device for corrugated paper and a corrugated paper machine. The detection device for the corrugated paper comprises a device main body, wherein the device main body comprises a storage platform and auxiliary brackets which are oppositely arranged; the laser emission module is arranged on the auxiliary bracket; the laser emission module is used for emitting continuous laser beams to the surface of corrugated paper, and the laser emission module adopts a double-beam synchronous emission structure; the laser receiving module is matched with the laser transmitting module, and the laser receiving module is mounted on the storage and loading platform; the laser receiver is used for receiving the laser signal transmitted or reflected by the corrugated paper and converting the laser signal into an electric signal; and the data processing module is used for receiving the electric signal output by the laser receiving module, and calculating to obtain a real-time thickness value of the corrugated paper according to the transmitting parameters of the laser transmitting module, the signal parameters received by the laser receiving module, the propagation characteristics of the laser in the corrugated paper and a preset multi-beam fusion algorithm.

Description

Technical Field

[0001] This invention relates to the field of laser measurement technology, specifically to a detection device and a corrugated paper machine for corrugated paper. Background Technology

[0002] During the production process, corrugated paper needs to be tested, especially the thickness parameter, in real time to ensure stable product quality.

[0003] A corrugated paper machine (commonly known as a corrugated board production line or corrugated board line) is a specialized set of equipment for producing corrugated board. Through continuous assembly line operation, it presses rolls of base paper into corrugated core paper, which is then bonded to the face paper to form corrugated board with different flute profiles and numbers of layers (three, five, or seven layers). It is a core production piece of equipment in the carton packaging industry. As the core equipment in corrugated paper production, the operational stability of the corrugated paper machine directly determines the thickness consistency and compressive strength of the finished board.

[0004] In existing technologies, corrugated paper thickness detection mostly employs contact measurement methods, which are prone to causing scratches on the paper surface and are affected by paper web vibration, resulting in low measurement accuracy. While some non-contact detection devices avoid physical contact, they are sensitive to surface deformation of corrugated paper, making it difficult to achieve high-precision online detection. To address this technical problem, a detection device and corrugated paper machine for corrugated paper are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a detection device for corrugated paper to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A detection device for corrugated paper includes: a device body, the device body including a storage platform and an auxiliary support arranged opposite to it;

[0008] A laser emitting module is mounted on an auxiliary support; the laser emitting module is used to emit a continuous laser beam onto the surface of the corrugated paper, and the laser emitting module adopts a dual-beam synchronous emission structure;

[0009] A laser receiving module that works in conjunction with the laser emitting module is mounted on the storage platform; it is used to receive laser signals transmitted or reflected through corrugated paper and convert the laser signals into electrical signals.

[0010] It also includes a data processing module, which receives the electrical signal output by the laser receiving module, calculates the real-time thickness value of the corrugated paper based on the emission parameters of the laser emitting module, the signal parameters received by the laser receiving module, the propagation characteristics of the laser in the corrugated paper, and a preset multi-beam fusion algorithm.

[0011] As a further embodiment of the present invention: the detection device for corrugated paper further includes: two air-floating pressure plates arranged on an auxiliary support, the two air-floating pressure plates being arranged in parallel, and a laser emission module being arranged between the two air-floating pressure plates; a negative pressure adsorption structure is provided on the top of the storage platform.

[0012] As a further aspect of the present invention, the multi-beam fusion algorithm is an adaptive weighted fusion algorithm based on geometric calibration.

[0013] As a further aspect of the present invention, the airflow outlet of the air-bearing pressure plate is an array of micropores.

[0014] As a further embodiment of the present invention: the negative pressure structure is a plurality of negative pressure holes arranged in an array on the surface of the storage platform, and both the negative pressure holes and the air flotation pressure plate are externally connected to a negative pressure device.

[0015] As a further embodiment of the present invention: the storage platform is also provided with a conveying mechanism, the conveying mechanism including a drive disk that is lifted and lowered inside the storage platform, a plurality of drive rollers are arrayed on the drive disk, a plurality of mounting through holes are arrayed on the storage platform, and the drive rollers are disposed in adjacent mounting through holes.

[0016] The present invention provides another technical solution as follows:

[0017] A corrugated paper machine includes: a corrugating forming device, a double-sided adhesive bonding device, a drying device, and a detection device for corrugated paper. The main body of the device is located downstream of the outlet of the drying device and is used for online thickness detection of the finished corrugated paperboard.

[0018] As a further embodiment of the present invention: the drying device includes a box body, and both ends of the box body are provided with material inlets. Inside the material inlets are two drying components arranged opposite each other and two sets of conveying components arranged at both ends of the drying components; the inner wall of the box body is also provided with material inlets.

[0019] As a further embodiment of the present invention: the drying assembly includes a mounting plate and a drying plate, the drying plate being elastically mounted on the mounting plate, the drying plate array being provided with a plurality of drying rods, and the drying rods having internal thermal resistors; the drying device also includes a driving component for driving the two drying assemblies to move closer or further apart.

[0020] As a further embodiment of the present invention: the conveying assembly includes a first drive wheel and a second drive wheel arranged opposite to each other, which rotate synchronously for conveying corrugated cardboard; a conveying channel for the cardboard to pass through is formed between the first drive wheel and the second drive wheel.

[0021] Compared with existing technologies, the advantages of this invention are: through dual-beam adaptive adjustment and multi-beam fusion algorithm, the detection deviation caused by the corrugation undulation of corrugated paper can be effectively compensated, and the detection accuracy is improved by more than 30% compared with existing technologies; it does not need to contact the surface of corrugated paper, thus avoiding damage to the surface of corrugated paper, and at the same time it is suitable for the detection of corrugated paper with different undulation heights, thus having a wider range of applications; the continuous laser beam combined with real-time data processing can realize dynamic real-time detection of corrugated paper thickness, with fast response speed and timely capture of thickness anomalies. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a detection device for corrugated paper according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the top structure of the storage platform in a detection device for corrugated paper according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of a drying device in a corrugated paper machine according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the side wall structure of a drying device in a corrugated paper machine according to an embodiment of the present invention.

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] Figure 6 This is a schematic diagram of the installation structure of the drive gear in a detection device for corrugated paper according to an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the structure of a detection device for corrugated paper according to an embodiment of the present invention.

[0029] In the picture:

[0030] 10-Main body of the device, 20-Drying device, 101-Storage platform, 102-Auxiliary support, 103-Air flotation pressure plate, 104-Laser emitting module, 105-Laser receiving module, 106-Drive plate, 107-Drive roller, 108-Mounting through hole, 109-Negative pressure hole, 110-Lifting seat, 111-Data processing module, 201-Box body, 202-Material inlet, 203-Mounting plate, 204-Drying plate, 205-Drying rod, 206-Mounting rod, 207 208-Drive Wheel 1, 209-Drive Wheel 2, 210-Vertical Rod, 211-Drive Fork, 212-One-Way Transmission Gear, 213-First Elastic Component, 214-Center Wheel, 215-Gear Ring, 216-Mounting Block, 217-Rack 1, 218-Drive Block, 219-Drive Shaft, 220-Abutting Rod, 221-Locking Ring, 222-Locking Block, 223-Elastic Telescopic Rod 1, 224-Telescopic Rod 2, 225-Matching Locking Groove, 226-Mounting Groove. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see Figures 1-2 The present invention provides a structural diagram of a detection device for corrugated paper according to Embodiment 1. The detection device for corrugated paper includes: a device body 10, the device body 10 including a storage platform 101 with a negative pressure adsorption structure and an auxiliary support 102 arranged opposite to each other, two air-floating pressure plates 103 arranged on the auxiliary support 102, the two air-floating pressure plates 103 being arranged in parallel, and a laser emitting module 104 disposed between the two air-floating pressure plates 103; the laser emitting module 104 is used to emit a continuous laser beam to the surface of the corrugated paper; a laser receiving module 105 cooperating with the laser emitting module 104, the laser receiving module 105 being mounted on the storage platform 101; used to receive the laser signal transmitted or reflected by the corrugated paper and convert the laser signal into an electrical signal; and a data processing module 111, used to receive the electrical signal output by the laser receiving module 105, and calculate the real-time thickness value of the corrugated paper according to the emission parameters of the laser emitting module 104, the signal parameters received by the laser receiving module 105, combined with the propagation characteristics of the laser in the corrugated paper, and using a preset multi-beam fusion algorithm.

[0034] In this embodiment of the invention, the laser emitting module 104 adopts a dual-beam synchronous emission structure, and the emission angle between the two laser beams can be adaptively adjusted within the range of 30°-60°.

[0035] In this embodiment of the invention, the multi-beam fusion algorithm is an adaptive weighted fusion algorithm based on geometric calibration.

[0036] In this embodiment of the invention, the data processing steps of the multi-beam fusion algorithm include:

[0037] First, a geometric calibration algorithm is used, combined with the angle between the two laser beams and the characteristics of laser propagation, to eliminate the systematic deviations caused by the installation angle of the two laser beams and the tilt of the corrugated paper surface, and to unify the detection reference coordinates.

[0038] For the laser transmission / reflection electrical signals acquired by the dual receiving units, an adaptive weighted fusion strategy is adopted. The weights of the two laser signals are dynamically allocated according to the corrugated paper undulation state (concave and convex parts). At the convex parts of the corrugation, the beam signal with stronger angle adaptation is used, while at the concave parts, the other beam signal is used for complementarity.

[0039] During the fusion process, a corrugated paper thickness compensation model is embedded, and the propagation attenuation characteristics of the laser in the corrugated paper are combined to correct signal deviations, ultimately outputting a real-time thickness value. This effectively solves the problem of detection error with a single laser beam.

[0040] Compared to traditional single-laser detection or mechanical contact detection, this invention utilizes a dual-beam adaptive adjustment and multi-beam fusion algorithm to effectively compensate for detection deviations caused by corrugated paper undulations, improving detection accuracy by over 30% compared to existing technologies. It eliminates the need for contact with the corrugated paper surface, avoiding damage, and is adaptable to corrugated paper with varying undulation heights, thus broadening its applicability. The continuous laser beam, combined with real-time data processing, enables dynamic real-time detection of corrugated paper thickness, offering fast response and timely detection of thickness anomalies. By employing a negative pressure adsorption structure and an air-floating pressure plate 103 on the storage platform 101, the corrugated paper is stably adsorbed onto the surface of 101 during detection. Simultaneously, the air-floating pressure plate 103 fixes the corrugated paper, completely eliminating detection errors caused by paper web jitter and localized arching, ensuring the stability and consistency of the laser detection path.

[0041] In some embodiments, the airflow outlet of the air-bearing plate 103 is an array of micropores, and the axis of the micropores forms an angle of 10°–30° with the vertical direction, so that the airflow forms a component force on the paper web surface toward the reference support, thereby eliminating local arching of the paper web. The array of micropores is arranged along the length of the air-bearing plate 103.

[0042] In some embodiments, the negative pressure structure is a plurality of negative pressure holes 109 arranged in an array on the surface of the storage platform 101. Both the negative pressure holes 109 and the air flotation plate 103 are externally connected to a negative pressure device. The negative pressure device may include a negative pressure pump, which is prior art and will not be described in detail here.

[0043] In some embodiments, in order to output the corrugated cardboard input to the storage platform 101, a conveying mechanism is also provided on the storage platform 101. The conveying mechanism includes a drive disk 106 that is lifted and lowered inside the storage platform 101. A plurality of drive rollers 107 are arranged in an array on the drive disk 106. A plurality of mounting through holes 108 are arranged in an array on the storage platform 101. The drive rollers 107 are arranged in adjacent mounting through holes 108. In this way, during the measurement process, the drive disk 106 descends so that the top of the drive rollers 107 is lower than the top of the storage platform 101, so as to avoid affecting the accuracy of the measurement. After the measurement is completed, the drive disk 106 rises, driving the drive rollers 107 to lift the corrugated cardboard and remove it from the surface of the storage platform 101. Then the drive rollers 107 rotate so that the corrugated cardboard is output from the storage platform 101.

[0044] In some embodiments, the storage platform 101 is internally provided with a lifting seat 110, and the drive disk 106 is fixedly installed at the output end of the lifting seat 110. The lifting seat 110 provides power for the lifting and lowering of the drive disk 106. The lifting seat 110 can be an electric telescopic cylinder. The drive disk 106 is also provided with a drive motor for driving the drive roller 107 to rotate, and the drive motor is connected to the drive roller 107 via a synchronous belt drive. The drive motor provides power to the drive roller 107.

[0045] Example 2

[0046] The present invention also provides a corrugated paper machine, comprising: a corrugating forming device, a double-sided adhesive bonding device, a drying device 20, and a device body 10. The device body 10 is located downstream of the outlet of the drying device 20 and is used for online thickness detection of finished corrugated paperboard.

[0047] like Figure 3 As shown, the drying device 20 includes a housing 201, with a material inlet 202 at both ends of the housing 201. Inside the material inlet 202, there are two drying components arranged opposite each other and two sets of conveying components arranged at both ends of the drying components. The inner wall of the housing 201 is also provided with a material inlet 202.

[0048] like Figure 3As shown, in some embodiments, the drying assembly includes a mounting plate 203 and a drying plate 204. The drying plate 204 is elastically mounted vertically on the mounting plate 203. The drying plate 204 is arrayed with a plurality of drying rods 205, and each drying rod 205 has a thermal resistor inside. The drying device 20 also includes a driving component for driving the two drying assemblies closer to or further away from each other. The elastic mounting of the drying plate 204 on the mounting plate 203 allows the paperboard to adaptively adjust the contact pressure with the paperboard when subjected to external force, thus avoiding damage to the paper surface.

[0049] like Figure 3 As shown, in some embodiments, the conveying assembly includes a drive wheel 207 and a drive wheel 208 arranged opposite to each other, which rotate synchronously for conveying corrugated cardboard; a conveying channel for the cardboard to pass through is formed between the drive wheel 207 and the drive wheel 208, and its surface is provided with anti-slip texture to enhance friction and ensure stable conveying.

[0050] like Figure 3 As shown, in some embodiments, during the drying process, the feed inlet 202 works to maintain the internal temperature of the box 201. The corrugated paper is located between two drying trays 204. The driving component drives the two drying trays 204 to approach and contact the two sides of the corrugated paper to dry it. After drying, the driving component drives the two drying trays 204 to move away from each other. When the drying rods 205 on the drying trays 204 lose contact with the cardboard, the conveying components at both ends drive the cardboard to move, so that the corrugated cardboard smoothly transitions to the next station during the conveying process. Then, the two drying trays 204 approach each other again to dry the cardboard between them.

[0051] like Figure 4 and Figure 5 As shown, in some embodiments, the driving component includes a drive gear rotatably mounted on the housing 201. Racks 217 mesh with the drive gear on both sides. The racks 217 are fixedly mounted on adjacent vertical rods 209. The vertical rods 209 are slidably mounted on the side wall of the housing 201. The vertical rods 209 are connected to mounting rods 206 on adjacent mounting discs 203. The mounting rods 206 are slidably mounted in the housing 201. Thus, during rotation, the drive gear can drive the adjacent vertical rods 209 and corresponding mounting discs 203 from both sides via the racks 217. Figure 4 and Figure 5 As shown, they move synchronously towards or away from each other, thereby driving the two drying trays 204 to open and close synchronously. The two vertical rods 209 are installed in opposite directions.

[0052] like Figures 4-7As shown, in some embodiments, in order to lock the position of the mounting plate 203, the drive gear includes a central wheel 213 and a toothed ring 214 elastically rotatably sleeved on the outside of the central wheel 213. A locking ring 221 is also sleeved on the outside of the central wheel 213. The locking ring 221 is disposed inside the toothed ring 214 and elastically slides along the axial direction of the toothed ring 214. At least two mounting blocks 215 are symmetrically arranged on the outside of the central wheel 213. The mounting blocks 215 are close to the telescopic rod 22. Abutting rods 220 are fixedly installed in four directions, and the abutting rods 220 abut against the locking block 222 on the locking ring 221; the abutting rods 220 abut against the middle protrusion of the locking block 222; two telescopic rods 224 are arranged in an array on the side of the locking ring 221 near the housing 201, and several mating locking grooves 225 are arranged in an array on the housing 201, and the telescopic rods 224 are inserted into the adjacent mating locking grooves 225; the mounting block 215 is set in the mounting groove 226 on the inner wall of the toothed ring 214. During operation, when the drying tray 204 is in a high or low position, the abutment rod 220 abuts against the high position of the locking block 222 under the action of elasticity, causing the telescopic rod 224 to move closer to the housing 201, so that the locking ring 221 is inserted into the adjacent mating locking groove 225, thereby locking the position of the toothed ring 214 and the position of the drying tray 204. When it is necessary to drive the drying tray 204 to rise or fall, the center wheel 213 rotates, overcoming the elastic resistance and causing the abutment rod 220 to slide from the high position of the locking block 222 to the abutment, and at the same time abut against the side wall of the mounting groove 226, driving the toothed ring 214 to rotate, thereby driving the drying tray 204 to rise or fall.

[0053] like Figure 5 As shown, in some embodiments, an elastic telescopic rod 223 is connected to the side wall of the locking ring 221. The other end of the elastic telescopic rod 223 is fixedly installed on the side wall of the toothed ring 214. The elastic telescopic rod 223 is parallel to the axial direction of the toothed ring 214 and has elastic deformation capability, which can provide a restoring force when 221 slides along the axial direction. The elastic telescopic rod 223 is prior art and will not be described in detail here.

[0054] In some embodiments, to drive the center wheel 213 to rotate, the center wheel 213 is fixedly sleeved on the drive shaft 219, which is located at the center of the center wheel 213. The drive shaft 219 is connected to a power motor for transmission, thereby providing power for the rotation of the drive shaft 219. The drive shaft 219 is a reversible motor, which drives the 213 to rotate synchronously by rotating forward or in reverse, thereby causing the two sides 209 to slide up and down along the side wall of the housing 201, thus realizing the opening and closing control of the drying trays 204.

[0055] like Figure 5As shown, in some embodiments, an elastic structure is also provided between the central wheel 213 and the toothed ring 214, so that the toothed ring 214 is elastically rotated and sleeved on the central wheel 213. The elastic structure can be a helical spring, one end of which is fixed to the outer wall of 213, and the other end is embedded in the positioning groove of the inner wall of 214, keeping 214 in a normal state; when 213 rotates, the elastic deformation of the helical spring causes a positional difference between the central wheel 213 and the toothed ring 214, driving the locking ring 221 to slide.

[0056] In some embodiments, both the first drive wheel 207 and the second drive wheel 208 are coaxially provided with one-way transmission gears 211. The one-way transmission gears 211 are existing technology and will not be described in detail here. The one-way transmission between the two one-way transmission gears 211 on the conveying assembly is arranged in opposite directions.

[0057] like Figure 4As shown, in some embodiments, in order to drive the one-way transmission gear 211 to drive the drive wheel 207 and drive wheel 208 to rotate during the upward movement of the vertical rod 209, the driving component also includes two drive forks 210. The two drive forks 210 are elastically and reciprocally slidably disposed on the box body 201 along the direction of cardboard movement. Both sides of the inner wall of the opening of the two drive forks 210 are provided with mating racks, which mesh with their adjacent one-way transmission gears 211 respectively. The other side of the drive fork 210 abuts against the drive block 218 on the outer wall of the adjacent vertical rod 209. The two drive blocks 218 include a vertical section and an oblique guide section, and the distance between the oblique guide section and the vertical rod 209 gradually increases from top to bottom. The vertical section and oblique guide section on the left drive block 218 are arranged from top to bottom, and the vertical section and oblique guide section on the right drive block 218 are arranged from bottom to top. When the two drying trays 204 are in the state of clamping and drying the cardboard, the ends of the drive forks 210 on both sides abut against the vertical section of the adjacent drive block 218. At this time, the drive forks 210 and the drive block 218 remain relatively stationary, and the cardboard is dried and shaped under the clamping of the drive wheel 1 207 and the drive wheel 208. When the central wheel 213 rotates, it drives the gear ring 214 to rotate, causing the left vertical rod 209 to rise and the right vertical rod 209 to fall, thus moving the two drying trays 204 away from each other. The drive fork 210 then gradually slides from the vertical section to the inclined guide section. As the distance between the inclined guide section and the vertical rod 209 gradually increases, the drive fork 210 slides along the housing 201. The drive fork 210 drives the one-way transmission gear 211, causing the adjacent drive wheels 207 and 208 to rotate, thus achieving automatic conveying of the cardboard after drying. When the left vertical rod 209 falls and the right vertical rod 209 rises, the drive fork 210 slides back along the inclined guide section to the vertical section, resetting to its initial position. Simultaneously, because the one-way transmission gear 211 operates in one direction, it does not drive the drive wheels 207 and 208 to rotate during the recovery rotation process, thus coordinating the one-way conveying of the cardboard with the mechanism's reset. The one-way transmission gear 211 is existing technology and will not be described in detail here.

[0058] In some embodiments, two drive blocks 218 are respectively installed on the side of the adjacent vertical rod 209 away from the rack 217, so that the two drive forks 210 on both sides move in the same direction.

[0059] In some embodiments, a restoring spring may be sleeved on the outside of the drive fork 210, and the two ends of the restoring spring are respectively fixedly installed on the drive fork 210 and the housing 201, so that the end of the drive fork 210 always abuts against the drive block 218.

[0060] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A detection device for corrugated paper, characterized in that, include: The main body of the device includes a storage platform and an auxiliary support arranged opposite to it. A laser emitting module is mounted on an auxiliary support; the laser emitting module is used to emit a continuous laser beam onto the surface of the corrugated paper, and the laser emitting module adopts a dual-beam synchronous emission structure; A laser receiving module that works in conjunction with the laser emitting module is mounted on the storage platform; it is used to receive laser signals transmitted or reflected through corrugated paper and convert the laser signals into electrical signals. It also includes a data processing module, which receives the electrical signal output by the laser receiving module, calculates the real-time thickness value of the corrugated paper based on the emission parameters of the laser emitting module, the signal parameters received by the laser receiving module, the propagation characteristics of the laser in the corrugated paper, and a preset multi-beam fusion algorithm.

2. The detection device for corrugated paper according to claim 1, characterized in that, The detection device for corrugated paper also includes: two air-floating pressure plates set on an auxiliary support, the two air-floating pressure plates being arranged in parallel, and a laser emission module being set between the two air-floating pressure plates; a negative pressure adsorption structure is provided on the top of the storage platform.

3. The detection device for corrugated paper according to claim 1, characterized in that, The multi-beam fusion algorithm is an adaptive weighted fusion algorithm based on geometric calibration.

4. The detection device for corrugated paper according to claim 2, characterized in that, The air outlet of the air flotation pressure plate is an array of micropores.

5. The detection device for corrugated paper according to claim 4, characterized in that, The negative pressure structure consists of several negative pressure holes arranged in an array on the surface of the storage platform. Both the negative pressure holes and the air flotation plate are externally connected to a negative pressure device.

6. The detection device for corrugated paper according to claim 1, characterized in that, The storage platform is also provided with a conveying mechanism, which includes a drive disk that is lifted and installed inside the storage platform. The drive disk is provided with an array of several drive rollers, and the storage platform is provided with an array of several mounting through holes. The drive rollers are installed in adjacent mounting through holes.

7. A corrugated paper machine, characterized in that, include: The corrugated forming device, the double-sided adhesive bonding device, the drying device, and the detection device for corrugated paper as described in any one of claims 1-6, wherein the main body of the device is located downstream of the outlet of the drying device and is used for online thickness detection of the finished corrugated paperboard.

8. A corrugated paper machine according to claim 7, characterized in that, The drying device includes a box body, with material inlets at both ends of the box body. Inside each material inlet are two drying components arranged opposite each other and two sets of conveying components arranged at both ends of the drying components. Material inlets are also provided on the inner wall of the box body.

9. A corrugated paper machine according to claim 8, characterized in that, The drying assembly includes a mounting plate and a drying plate. The drying plate is elastically mounted on the mounting plate. The drying plate array is provided with a plurality of drying rods, and the drying rods are provided with thermal resistors. The drying device also includes a driving component that drives the two drying assemblies to move closer or further apart.

10. A corrugated paper machine according to claim 9, characterized in that, The conveying assembly includes a first drive wheel and a second drive wheel arranged opposite to each other, which rotate synchronously for conveying corrugated cardboard; a conveying channel is formed between the first drive wheel and the second drive wheel for the cardboard to pass through.

Images