A kind of online detection device for moisture and basis weight of corrugated paper based on near infrared spectrum

Abstract

The application discloses a kind of based on near infrared spectroscopy's corrugated paper moisture and quantitative online detection device, it is related to papermaking detection technical field, its technical scheme is: including frame, fixedly connected in the top of frame support and four air cylinders of fixed installation on support, four air cylinders bottom end fixedly connected with moving plate, moving plate bottom fixedly connected with spectrometer support, spectrometer support is slidably sleeved with shell.The beneficial effects of the present application are: design cleaning assembly on the shell, when the near infrared spectrometer is moved down by the work of air cylinder and close to paper, the cleaning assembly will work, so that the cleaning brush on the cleaning assembly can move back and forth, and then the impurities on the paper can be cleaned, so that the device can avoid the impurities remaining on the paper during cleaning, and then the accuracy of moisture and quantitative detection can be ensured.

Description

Technical Field

[0001] This invention relates to the field of paper testing technology, specifically to an online detection device for moisture and basis weight of corrugated paper based on near-infrared spectroscopy. Background Technology

[0002] Near-infrared light detection of moisture and basis weight in corrugated base paper is based on the absorption or scattering characteristics of materials to infrared light of specific wavelengths. Hydrogen-oxygen bonds (OH) in moisture strongly absorb near-infrared light of specific wavelengths (such as around 1940nm and 1450nm), and the absorption intensity is positively correlated with the moisture content. By measuring the degree of attenuation of transmission or reflection of this wavelength of light, the moisture content of the base paper can be calculated. The basis weight (weight per unit area) is related to the total mass of fibers in the base paper. Carbon-hydrogen bonds (CH) in the fibers absorb or scatter another part of the near-infrared wavelengths (such as characteristic wavelengths in the range of 1200-2500nm), and the strength of the signal is directly related to the bulk density of the fibers. By analyzing the interaction intensity of these wavelengths of light, the weight per unit area of ​​the base paper can be calculated. During detection, a near-infrared light generator irradiates the surface of the base paper, and its built-in receiver captures the transmitted or reflected light signal. After processing by an algorithm, the moisture and basis weight values ​​are quickly output.

[0003] Existing online detection devices are found to lack the function of cleaning impurities on the base paper. Impurities adhere to the surface of corrugated base paper during cutting and storage, and these impurities can interfere with the absorption or scattering of infrared light, causing spectral signal distortion and affecting the accuracy of moisture and quantitative detection. Therefore, improvements are needed.

[0004] Therefore, it is necessary to invent an online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy. Summary of the Invention

[0005] Therefore, the present invention provides an online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy to solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy, comprising a frame, a bracket fixedly connected to the top of the frame, and four cylinders fixedly installed on the bracket. A movable plate is fixedly connected to the bottom of the four cylinders, and a spectrometer support is fixedly connected to the bottom of the movable plate. A shell is slidably fitted on the spectrometer support, and a support block is fixedly connected to the inner rear wall of the spectrometer support. A near-infrared spectrometer is fixedly connected to the front side of the support block.

[0007] A rubber frame is fixedly connected to the bottom of the outer shell, and a cleaning component is provided on the outer shell for cleaning residues on the raw paper.

[0008] The outer casing is also provided with four smoothing components, which are used to smooth the base paper;

[0009] The frame is equipped with a placement assembly for placing the raw paper that needs to be tested.

[0010] Preferably, both sides of the spectrometer support are fixedly connected with protruding rods, and both protruding rods are in contact with the inner wall of the top of the outer shell. Both sides of the spectrometer support are fixedly connected with sliding plates, and two columns are slidably mounted on each of the two sliding plates. The bottom ends of the four columns are fixedly connected to the top of the outer shell. Two springs are fixedly connected between each of the two sliding plates and the outer shell. The four springs are respectively sleeved on the outside of the four columns. The movable plate has four through holes, and the four through holes are respectively located directly above the four columns.

[0011] Preferably, the cleaning assembly includes two reciprocating screws, both of which are embedded in the housing and connected to it via bearings. Each of the two reciprocating screws is provided with a sliding seat, which is connected to the reciprocating screw via a ball screw pair. A movable housing is fixedly connected to the two sliding seats. A cleaning brush is provided at the bottom of the movable housing. A crossbar is fixedly connected inside the movable housing. A slider is slidably sleeved on the outside of the crossbar. The slider is fixedly connected to the handle of the cleaning brush.

[0012] Preferably, two springs are sleeved on the outside of the crossbar. The inner ends of the two springs are fixedly connected to both sides of the slider, and the outer ends of the two springs are fixedly connected to the inner walls of both sides of the movable shell. Two wave rods are fixedly connected inside the shell. Two protruding plates are fixedly connected to the handle of the cleaning brush. Each of the two protruding plates has an arc-shaped part. The two wave rods pass through the two arc-shaped parts and slide in contact with them.

[0013] Preferably, two fixing blocks are fixedly connected to the rear side of the outer casing. Each of the two fixing blocks is fitted with a hollow rotating shaft. A bevel gear is fixedly connected to the bottom end of each of the two rotating shafts. A bevel gear is provided on the front side of each of the two bevel gears and meshes with it. The two bevel gears are fixedly connected to the rear ends of two reciprocating lead screws respectively. A spiral groove is opened inside each of the two rotating shafts. Two moving rods are fixedly connected to the bottom of the moving plate. The bottom ends of the two moving rods extend into the interior of the two rotating shafts respectively. A protrusion is fixedly connected to each of the two moving rods. The two protrusions are slidably embedded in the spiral groove. An L-shaped rod is fixedly connected to the top of each of the two fixing blocks. The two moving rods pass through the two L-shaped rods and slide in contact with them respectively. The rotating shafts are connected to the fixing blocks through bearings.

[0014] Preferably, the cleaning assembly further includes a fan fixedly connected to the top of the housing, and air casings fixedly connected to the inner walls of both sides of the housing. Multiple air holes are opened at the bottom of each of the two air casings. A T-pipe is fixedly connected between the fan and the two air casings. The T-pipe passes through the front side of the housing and is fixedly connected thereto. A flexible hose is fixedly connected to the air outlet of the fan. The flexible hose passes through the bracket and is fixedly connected thereto. Breathable meshes are fixedly installed on both sides and the front and rear sides of the housing. A slot is opened on the movable plate, and the slot is located directly above the fan.

[0015] Preferably, the smoothing component includes two upright blocks, both of which are fixedly connected to the outer casing. A rotating rod is connected between the two upright blocks, and a rotating plate is fixedly installed on the rotating rod. Two stops are provided on one side of the rotating plate, and both stops are fixedly connected to the outer casing. Two torsion springs are sleeved on the rotating rod, and the outer ends of the two torsion springs are fixedly connected to the two upright blocks respectively. The inner ends of the two torsion springs are fixedly connected to the rotating plate. The rotating rod and the two upright blocks are connected by bearings.

[0016] Preferably, the placement assembly includes a rotating block, which is embedded in the top of the frame and its bottom is connected to the inner wall of the bottom of the frame. A base plate is fixedly connected to the top of the rotating block, and two placement blocks are fixedly connected to the top of the base plate. A U-shaped stop bar is fixedly connected to the top of each of the two placement blocks. A motor is fixedly connected to the inner wall of the bottom of the frame, and a bevel gear three is fixedly connected to the output shaft of the motor. A bevel gear four is provided on one side of the bevel gear three and meshes with it. The bevel gear four is fixedly sleeved on the rotating block. An arc-shaped bevel gear ring one and an arc-shaped rod are fixedly connected to the top of the frame. The arc-shaped rod is located in front of the bevel gear ring one, and an arc-shaped bevel gear ring two is fixedly connected to the arc-shaped rod. Both placement blocks are provided with a material-stopping assembly, and the rotating block is connected to the frame through a bearing.

[0017] Preferably, the material blocking assembly includes two support blocks fixedly connected to the bottom of the placement block. Threaded rods are embedded in the two support blocks, and threaded blocks are sleeved on the outside of the threaded rods. The threaded blocks and threaded rods are connected by threads. A bevel gear is fixedly connected to one end of the threaded rod. One of the support blocks has a through groove. A pull plate is fixedly connected to the bottom of the threaded block, passing through the through groove and sliding in contact with it. A limit rod is fixedly connected between the two support blocks, passing through the threaded block and sliding in contact with it. The threaded rod and support blocks are connected by bearings.

[0018] Preferably, the bottom of the placement block is fixedly connected to two support plates, and a second rotating shaft is embedded in the two support plates. A flip plate is provided on one side of the second rotating shaft. Two flip blocks are fixedly connected between the flip plate and the second rotating shaft. A first gear is fixedly sleeved on the outside of the second rotating shaft. A toothed plate is provided at the bottom of the first gear and meshes with it. The toothed plate is fixedly connected to the top of the pull plate. The second rotating shaft is connected to the support plate through a bearing.

[0019] The beneficial effects of this invention are:

[0020] 1. This invention designs a cleaning component on the outer shell. When the cylinder operates and moves the near-infrared spectrometer downwards close to the raw paper, the cleaning component will work. In this way, the cleaning brush on the cleaning component can move back and forth once, thereby cleaning the impurities on the raw paper. Thus, this device can avoid leaving impurities on the raw paper during cleaning, thereby avoiding impurities interfering with the absorption or scattering of infrared light and causing spectral signal distortion, and ensuring the accuracy of moisture and quantitative detection.

[0021] 2. This invention, through the design of a smoothing component, can smooth the original paper in the area below the outer shell during use, which can avoid the original paper having an uneven curvature. This can ensure the quality of cleaning during cleaning, and at the same time, it can also increase the original paper's absorption of infrared light. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a front sectional view provided by the present invention;

[0026] Figure 3 Provided by the present invention Figure 2 Enlarged view of point A in the image;

[0027] Figure 4 Provided by the present invention Figure 2 Enlarged view of point B in the image;

[0028] Figure 5 Provided by the present invention Figure 2 Enlarged view of point C in the image;

[0029] Figure 6 This is a side sectional view provided by the present invention;

[0030] Figure 7 Provided by the present invention Figure 6 Enlarged view of point D in the image;

[0031] Figure 8 A perspective view of components such as the cylinder, housing, movable plate, and hose provided by the present invention;

[0032] Figure 9 Provided by the present invention Figure 8 Rear view;

[0033] Figure 10 Provided by the present invention Figure 8 Exploded 3D view;

[0034] Figure 11 A perspective view of components such as the movable rod, wave rod, cleaning brush, and movable housing provided by the present invention;

[0035] Figure 12 Provided by the present invention Figure 11 Exploded 3D view;

[0036] Figure 13 Provided by the present invention Figure 12 Enlarged view of point E in the image;

[0037] Figure 14 Provided by the present invention Figure 11 Side sectional view;

[0038] Figure 15 Provided by the present invention Figure 14 Enlarged view of point F in the image;

[0039] Figure 16 A perspective view of the smoothing component provided for this invention;

[0040] Figure 17 A perspective view of the fan, hose, duct, and tee provided for this invention;

[0041] Figure 18 A bottom-view perspective view of the present invention, showing the absence of a rack;

[0042] Figure 19 Provided by the present invention Figure 18 Enlarged view of point G in the image.

[0043] In the diagram: 1. Frame; 2. Support; 3. Cylinder; 4. Moving plate; 5. Spectrometer support; 6. Housing; 7. Support block; 8. Near-infrared spectrometer; 9. Rubber frame; 10. Protruding rod; 11. Slide plate; 12. Column; 13. Spring 1; 14. Reciprocating screw; 15. Sliding seat; 16. Moving housing; 17. Cleaning brush; 18. Crossbar; 19. Slider; 20. Spring 2; 21. Wave-shaped rod; 22. Protruding plate; 23. Arc-shaped part; 24. Fixing block; 25. Rotating shaft 1; 26. Bevel gear 1; 27. Bevel gear 2; 28. Spiral groove; 29. ​​Moving rod; 30. Protrusion; 31. L-shaped rod; 32. Fan; 3. Air casing; 34. T-joint; 35. Flexible hose; 36. Ventilation mesh; 37. Stand block; 38. Rotating rod; 39. Rotating plate; 40. Stop block; 41. Torsion spring; 42. Rotating block; 43. Base plate; 44. Placement block; 45. U-shaped stop bar; 46. Motor; 47. Bevel gear three; 48. Bevel gear four; 49. Bevel gear ring one; 50. Arc rod; 51. Bevel gear ring two; 52. Support block; 53. Threaded rod; 54. Threaded block; 55. Bevel gear five; 56. Pull plate; 57. Limiting rod; 58. Support plate; 59. Rotating shaft two; 60. Flipping plate; 61. Flipping block; 62. First gear; 63. Gear plate. Detailed Implementation

[0044] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0045] See attached document Figures 1-4 , Figures 6-15 As shown in one embodiment of the present invention, the present invention provides an online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy, including a frame 1, a support 2 fixedly connected to the top of the frame 1, and four cylinders 3 fixedly installed on the support 2. The bottom of the four cylinders 3 is fixedly connected to a moving plate 4, and the bottom of the moving plate 4 is fixedly connected to a spectrometer support 5. A housing 6 is slidably fitted on the spectrometer support 5. A support block 7 is fixedly connected to the inner rear wall of the spectrometer support 5, and a near-infrared spectrometer 8 is fixedly connected to the front side of the support block 7.

[0046] A rubber frame 9 is fixedly connected to the bottom of the outer casing 6. A cleaning component is provided on the outer casing 6 for cleaning residues on the raw paper. A placement component is provided on the frame 1 for placing the raw paper to be tested.

[0047] Both sides of the spectrometer support 5 are fixedly connected with protruding rods 10, and both protruding rods 10 are in contact with the inner wall of the top of the outer shell 6. Both sides of the spectrometer support 5 are fixedly connected with sliding plates 11, and two columns 12 are slidably mounted on each of the two sliding plates 11. The bottom ends of the four columns 12 are fixedly connected to the top of the outer shell 6. Two springs 13 are fixedly connected between each of the two sliding plates 11 and the outer shell 6. The four springs 13 are respectively sleeved on the outside of the four columns 12. The movable plate 4 has four through holes, which are located directly above the four columns 12.

[0048] In this implementation scheme, when performing moisture and quantitative analysis on the raw paper, the raw paper is placed on the placement assembly. Then, controlling the operation of four cylinders 3 moves the moving plate 4, spectrometer support 5, outer casing 6, and components on the outer casing 6 downwards until the rubber frame 9 contacts the raw paper. Continuing to control the cylinders 3, the moving plate 4, spectrometer support 5, two sliding plates 11, support block 7, and near-infrared spectrometer 8 move downwards, bringing the near-infrared spectrometer 8 closer to the raw paper. At the same time, the four springs 13 are compressed. As the moving plate 4 continues to move downwards, the cleaning assembly also operates. When the near-infrared spectrometer 8 moves downwards and approaches the raw paper, the cleaning brush 17 on the cleaning assembly moves back and forth once, thereby cleaning impurities on the raw paper. Thus, this device can avoid leaving impurities on the raw paper during cleaning, thereby preventing impurities from interfering with the absorption or scattering of infrared light and causing spectral signal distortion, ensuring the accuracy of moisture and quantitative analysis.

[0049] After cleaning, control the near-infrared spectrometer 8 to work, and then the near-infrared light can irradiate the raw paper. At the same time, the receiver on the near-infrared spectrometer 8 captures the transmitted or reflected light signal, and after processing by the algorithm, it quickly outputs the moisture value and quantitative value. When using it, the near-infrared spectrometer 8 can be connected to the computer, so that the output moisture value and quantitative value can be displayed on the computer. Then, it can be determined whether the raw paper is qualified. Thus, the detection of moisture and quantitative value is realized. After the detection is completed, control the cylinder 3 to move each part upward. At the same time as moving upward, the spectrometer support 5 and the outer shell 6 will also be reset under the action of the four springs 13.

[0050] See attached document Figure 2 , Figure 4 , Figures 6-15As shown in another embodiment of the present invention, the cleaning assembly includes two reciprocating screws 14, both of which are embedded in the housing 6 and connected to it via bearings. Each of the two reciprocating screws 14 is provided with a sliding seat 15, which is connected to the reciprocating screw 14 via a ball screw pair. A movable housing 16 is fixedly connected to each of the two sliding seats 15. A cleaning brush 17 is provided at the bottom of the movable housing 16. A crossbar 18 is fixedly connected inside the movable housing 16. A slider 19 is slidably sleeved on the outside of the crossbar 18. The slider 19 is fixedly connected to the handle of the cleaning brush 17. Two springs 20 are sleeved on the outside of the crossbar 18. The inner ends of the two springs 20 are fixedly connected to both sides of the slider 19, and the outer ends of the two springs 20 are fixedly connected to the inner walls of both sides of the movable housing 16. Two wave-shaped rods 21 are fixedly connected inside the housing 6. Two protruding plates 22 are fixedly connected to the handle of the cleaning brush 17. Each of the two protruding plates 22 is provided with an arc-shaped portion 23. Two wave-shaped rods 21 pass through two arc-shaped parts 23 and slide in contact with them. Two fixed blocks 24 are fixedly connected to the rear side of the outer shell 6. Hollow rotating shafts 25 are embedded in both fixed blocks 24. Bevel gears 26 are fixedly connected to the bottom of both rotating shafts 25. Bevel gears 27 mesh with the front of both bevel gears 26. The two bevel gears 27 are fixedly connected to the rear ends of two reciprocating screws 14. Spiral grooves 28 are opened inside both rotating shafts 25. Two moving rods 29 are fixedly connected to the bottom of the moving plate 4. The bottom ends of the two moving rods 29 extend into the interior of the two rotating shafts 25. Protrusions 30 are fixedly connected to both moving rods 29. The two protrusions 30 are slidably embedded in the spiral grooves 28. L-shaped rods 31 are fixedly connected to the top of both fixed blocks 24. The two moving rods 29 pass through the two L-shaped rods 31 and slide in contact with them. The rotating shafts 25 and the fixed blocks 24 are connected by bearings.

[0051] It should be noted that when the cylinder 3 continues to control the downward movement of components such as the moving plate 4 and the spectrometer support 5, the downward movement of the moving plate 4 also causes the two moving rods 29 and the two protrusions 30 to move downward. Since the two protrusions 30 are embedded in the two spiral grooves 28, the downward movement of the two protrusions 30 causes the two rotating shafts 25 to rotate. The rotation of the two rotating shafts 25 drives the two bevel gears 26 to rotate, and the rotation of the two bevel gears 26 drives the two bevel gears 27 to rotate. This causes the two reciprocating screws 14 to rotate. Rotating the lead screw 14 causes the two sliding seats 15 to move back and forth. The downward movement of the protrusion 30 is just enough to move the two sliding seats 15 back and forth by one side. This causes the moving shell 16, the crossbar 18, the two springs 20, the slider 19, and the cleaning brush 17 to move back and forth once. Since the bottom of the cleaning brush 17 is on the same horizontal plane as the bottom of the rubber frame 9, and the rubber frame 9 is pressed on the original paper, the bristles of the cleaning brush 17 will come into contact with the original paper. Thus, the cleaning brush 17 can clean the impurities on the original paper by moving back and forth once.

[0052] In addition, two wave rods 21 are designed in the outer shell 6, and two protrusions 22 are on the cleaning brush 17. The two wave rods 21 pass through the two arc-shaped parts 23 and slide in contact with them. In this way, when the cleaning brush 17 moves back and forth once, it will also move left and right continuously under the action of the two wave rods 21, the two protrusions 22, the crossbar 18, the slider 19 and the two springs 20, which can increase the effect of cleaning impurities.

[0053] See attached document Figure 1 , Figures 6-10 , Figures 17-18 As shown in another embodiment of the present invention, in this embodiment, the cleaning component further includes a fan 32 fixedly connected to the top of the outer casing 6, and air shells 33 fixedly connected to the inner walls of both sides of the outer casing 6. Multiple air holes are opened at the bottom of the two air shells 33. A three-way pipe 34 is fixedly connected between the fan 32 and the two air shells 33. The three-way pipe 34 passes through the front side of the outer casing 6 and is fixedly connected thereto. A flexible hose 35 is fixedly connected to the air outlet of the fan 32. The flexible hose 35 passes through the bracket 2 and is fixedly connected thereto. Breathable meshes 36 are fixedly installed on both sides and the front and rear sides of the outer casing 6. A slot is opened on the movable plate 4. The slot is located directly above the fan 32.

[0054] It should be noted that when the cylinder 3 is controlled to move the near-infrared spectrometer 8 downwards and closer to the raw paper, which is when the cleaning brush 17 is cleaning the impurities on the raw paper, the fan 32 can be controlled to work. This will generate sufficient suction, and then, under the action of the two fan housings 33, multiple air holes, three-way pipe 34 and hose 35, the impurities cleaned by the cleaning brush 17 can be sucked away. This can prevent the impurities cleaned by the cleaning brush 17 from remaining in the outer shell 6, so as to ensure the cleanliness of the inside of the outer shell 6 and ensure the accuracy of subsequent testing.

[0055] See attached document Figures 1-2 , Figure 4 , Figures 6-10 , Figure 16 As shown in another embodiment of the present invention, in this embodiment, the outer shell 6 is further provided with four smoothing components for smoothing the base paper; the smoothing components include two upright blocks 37, both upright blocks 37 are fixedly connected to the outer shell 6, a rotating rod 38 is connected between the two upright blocks 37, a rotating plate 39 is fixedly installed on the rotating rod 38, two stops 40 are provided on one side of the rotating plate 39 and in contact with it, both stops 40 are fixedly connected to the outer shell 6, two torsion springs 41 are sleeved on the rotating rod 38, the outer ends of the two torsion springs 41 are fixedly connected to the two upright blocks 37 respectively, the inner ends of the two torsion springs 41 are fixedly connected to the rotating plate 39, and the rotating rod 38 and the two upright blocks 37 are connected by bearings;

[0056] It should be noted that four smoothing components are designed, located on the front, back, left, and right sides of the outer shell 6. When the outer shell 6 and the rubber frame 9 move downwards, the four rotating plates 39 will first contact the original paper. As the outer shell 6 moves downwards, the four rotating plates 39 will rotate around the four rotating rods 38 as the rotation axis, opening outwards. This allows the four rotating rods 38 to smooth the original paper, thus avoiding any unevenness or curvature. This ensures the quality of cleaning and also increases the original paper's absorption of infrared light.

[0057] See attached document Figures 1-2 , Figures 18-19 As shown, in another embodiment of the present invention, the placement component includes a rotating block 42, which is embedded in the top of the frame 1 and its bottom is connected to the inner wall of the bottom of the frame 1. A base plate 43 is fixedly connected to the top of the rotating block 42, and two placement blocks 44 are fixedly connected to the top of the base plate 43. A U-shaped stop bar 45 is fixedly connected to the top of each of the two placement blocks 44. A motor 46 is fixedly connected to the inner wall of the bottom of the frame 1. A bevel gear 47 is fixedly connected to the output shaft of the motor 46. A bevel gear 48 is provided on one side of the bevel gear 47 and meshes with it. The bevel gear 48 is fixedly sleeved on the rotating block 42. An arc-shaped bevel gear ring 49 and an arc-shaped rod 50 are fixedly connected to the top of the frame 1. The arc-shaped rod 50 is located in front of the bevel gear ring 49. An arc-shaped bevel gear ring 51 is fixedly connected to the arc-shaped rod 50. Both placement blocks 44 are provided with a material-stopping component. The rotating block 42 is connected to the frame 1 through a bearing.

[0058] It should be noted that when performing moisture and quantitative tests on the raw paper, the raw paper can be placed on two placement blocks 44. The motor 46 is controlled to work to rotate the bevel gear 3 47. The rotation of the bevel gear 3 47 drives the rotation of the bevel gear 48. The rotation of the bevel gear 48 drives the rotating block 42, the base plate 43, and the two placement blocks 44 to rotate. In this way, the raw paper on the two placement blocks 44 can be moved to the bottom of the outer casing 6 for testing in turn. This can achieve continuous testing. The device will not be in standby mode when the raw paper is removed and a new raw paper is placed, which can increase the testing efficiency.

[0059] See attached document Figure 2 , Figure 5 , Figures 18-19 As shown in another embodiment of the present invention, in this embodiment, the material blocking assembly includes two support blocks 52 fixedly connected to the bottom of the placement block 44. Threaded rods 53 are embedded in the two support blocks 52, and threaded blocks 54 are sleeved on the outside of the threaded rods 53. The threaded blocks 54 and the threaded rods 53 are connected by threads. A bevel gear 55 is fixedly connected to one end of the threaded rod 53. A through groove is formed on one of the support blocks 52, and a pull plate 56 is fixedly connected to the bottom of the threaded block 54. The pull plate 56 passes through the through groove and slides in contact with it. A limit rod 57 is fixedly connected between the two support blocks 52 for limiting movement. Rod 57 passes through threaded block 54 and slides in contact with it. Threaded rod 53 is connected to support block 52 through bearing. Two support plates 58 are fixedly connected to the bottom of placement block 44. A second rotating shaft 59 is embedded on the two support plates 58. A flip plate 60 is provided on one side of the second rotating shaft 59. Two flip blocks 61 are fixedly connected between the flip plate 60 and the second rotating shaft 59. A first gear 62 is fixedly sleeved on the outside of the second rotating shaft 59. A toothed plate 63 is provided at the bottom of the first gear 62 and meshes with it. The toothed plate 63 is fixedly connected to the top of pull plate 56. The second rotating shaft 59 is connected to support plate 58 through bearing.

[0060] It should be noted that when the motor 46 works to make the two placement blocks 44 rotate, the material blocking components on the two placement blocks 44 will also rotate together. Since the two material blocking components work on the same principle, the following will describe them in detail using a single component.

[0061] When the material blocking assembly moves from the left to the right along with the placement block 44, the bevel gear 55 will mesh with the arc-shaped bevel gear ring 51. When meshing, the threaded rod 53 can rotate. The rotation of the threaded rod 53 drives the threaded block 54 to move towards the flipping plate 60. This allows the pull plate 56 and the toothed plate 63 to move. When moving, the first gear 62 can rotate. The rotation of the first gear 62 drives the rotating shaft 59 to rotate, which in turn causes the two flipping blocks 61 and the flipping plate 60 to rotate. When moving from the left to the right, the flipping plate 60 can contact the placement block 44 and the U-shaped stop bar 45. In this way, the flipping plate 60 and the U-shaped stop bar 45 can block the original paper, thus preventing the original paper from being thrown out when moving from the left to the right.

[0062] After the test is completed, the steps are reversed when moving from the right to the left. This way, the flip plate 60 can open without contacting the placement block 44 and the U-shaped baffle 45. This allows the user to press on the original paper and pull it off, which is more convenient and can increase the speed of paper replacement.

[0063] Additionally, it is worth noting that bevel gear 1 49 is located below bevel gear 55, and bevel gear 2 51 is located above bevel gear 55. This ensures that the rotation direction of bevel gear 55 is different when it meshes with bevel gear 1 49 and bevel gear 2 51.

[0064] Furthermore, the control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Moreover, this invention is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0065] The above are merely preferred embodiments of the present invention. Any person skilled in the art can modify the present invention or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy, characterized in that, The instrument includes a frame (1), a bracket (2) fixedly connected to the top of the frame (1), and four cylinders (3) fixedly installed on the bracket (2). The bottom of the four cylinders (3) is fixedly connected to a moving plate (4). The bottom of the moving plate (4) is fixedly connected to a spectrometer support (5). The spectrometer support (5) is slidably fitted with a shell (6). The inner wall of the rear side of the spectrometer support (5) is fixedly connected to a support block (7). The front side of the support block (7) is fixedly connected to a near-infrared spectrometer (8). A rubber frame (9) is fixedly connected to the bottom of the outer shell (6), and a cleaning component is provided on the outer shell (6) for cleaning the residue on the original paper; The outer casing (6) is also provided with four smoothing components, which are used to smooth the base paper; The frame (1) is provided with a placement component for placing the raw paper to be tested; The cleaning assembly includes two reciprocating screws (14), both of which are embedded in the housing (6) and connected to it via bearings. Each of the two reciprocating screws (14) is provided with a sliding seat (15), which is connected to the reciprocating screws (14) via a ball screw pair. A movable housing (16) is fixedly connected to the two sliding seats (15). A cleaning brush (17) is provided at the bottom of the movable housing (16). A crossbar (18) is fixedly connected inside the movable housing (16). A slider (19) is slidably sleeved on the outside of the crossbar (18). The slider (19) is fixedly connected to the handle of the cleaning brush (17). The outer casing (6) is fixedly connected to two fixing blocks (24) on its rear side. Each of the two fixing blocks (24) is fitted with a hollow rotating shaft (25). The bottom of each of the two rotating shafts (25) is fixedly connected to a bevel gear (26). The front of each of the two bevel gears (26) is provided with a bevel gear (27) that meshes with it. The two bevel gears (27) are fixedly connected to the rear ends of the two reciprocating screws (14) respectively. The interior of each of the two rotating shafts (25) is provided with a spiral groove (28). The moving plate (4) Two movable rods (29) are fixedly connected to the bottom. The bottom ends of the two movable rods (29) extend into the interior of the two rotating shafts (25). A protrusion (30) is fixedly connected to each of the two movable rods (29). The two protrusions (30) are slidably embedded in the spiral groove (28). An L-shaped rod (31) is fixedly connected to the top of each of the two fixed blocks (24). The two movable rods (29) pass through the two L-shaped rods (31) and slide in contact with them. The rotating shaft (25) and the fixed block (24) are connected by a bearing. The smoothing component includes two upright blocks (37), both of which are fixedly connected to the outer shell (6). A rotating rod (38) is connected between the two upright blocks (37). A rotating plate (39) is fixedly installed on the rotating rod (38). Two stops (40) are provided on one side of the rotating plate (39) and are in contact with it. Both stops (40) are fixedly connected to the outer shell (6). Two torsion springs (41) are sleeved on the rotating rod (38). The outer ends of the two torsion springs (41) are fixedly connected to the two upright blocks (37) respectively, and the inner ends of the two torsion springs (41) are fixedly connected to the rotating plate (39). The rotating rod (38) and the two upright blocks (37) are connected by bearings.

2. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 1, characterized in that: Both sides of the spectrometer support (5) are fixedly connected with protruding rods (10), and both protruding rods (10) are in contact with the inner wall of the top of the outer shell (6). Both sides of the spectrometer support (5) are fixedly connected with sliding plates (11), and two columns (12) are slidably provided on the two sliding plates (11). The bottom ends of the four columns (12) are fixedly connected to the top of the outer shell (6). Two springs (13) are fixedly connected between the two sliding plates (11) and the outer shell (6). The four springs (13) are respectively sleeved on the outside of the four columns (12). The moving plate (4) has four through holes, and the four through holes are located directly above the four columns (12).

3. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 1, characterized in that: Two springs (20) are sleeved on the outside of the crossbar (18). The inner ends of the two springs (20) are fixedly connected to both sides of the slider (19), and the outer ends of the two springs (20) are fixedly connected to the inner walls of both sides of the movable shell (16). Two wave rods (21) are fixedly connected inside the shell (6). Two protrusions (22) are fixedly connected to the handle of the cleaning brush (17). Both protrusions (22) are provided with arc-shaped parts (23). The two wave rods (21) pass through the two arc-shaped parts (23) and slide in contact with them.

4. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 1, characterized in that: The cleaning assembly also includes a fan (32) fixedly connected to the top of the housing (6). Both sides of the housing (6) are fixedly connected to the inner walls of the housing (6). The bottom of the two fan shells (33) is provided with multiple air holes. A three-way pipe (34) is fixedly connected between the fan (32) and the two fan shells (33). The three-way pipe (34) passes through the front side of the housing (6) and is fixedly connected to it. The air outlet of the fan (32) is fixedly connected to a flexible hose (35). The flexible hose (35) passes through the bracket (2) and is fixedly connected to it. Breathable mesh (36) is fixedly installed on both sides and the front and rear sides of the housing (6). The moving plate (4) is provided with a slot. The slot is located directly above the fan (32).

5. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 1, characterized in that: The placement assembly includes a rotating block (42), which is embedded in the top of the frame (1) and its bottom is connected to the inner wall of the bottom of the frame (1). A base plate (43) is fixedly connected to the top of the rotating block (42), and two placement blocks (44) are fixedly connected to the top of the base plate (43). A U-shaped stop bar (45) is fixedly connected to the top of each of the two placement blocks (44). A motor (46) is fixedly connected to the inner wall of the bottom of the frame (1), and a bevel gear (47) is fixedly connected to the output shaft of the motor (46). The bevel gear three (47) is provided with a bevel gear four (48) meshing with it on one side. The bevel gear four (48) is fixedly sleeved on the rotating block (42). The top of the frame (1) is fixedly connected with an arc-shaped bevel gear ring one (49) and an arc-shaped rod (50). The arc-shaped rod (50) is located in front of the bevel gear ring one (49). The arc-shaped bevel gear ring two (51) is fixedly connected on the arc-shaped rod (50). Both of the placement blocks (44) are provided with a material blocking assembly. The rotating block (42) is connected to the frame (1) through a bearing.

6. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 5, characterized in that: The material blocking assembly includes two support blocks (52) fixedly connected to the bottom of the placement block (44). Threaded rods (53) are embedded in the two support blocks (52). Threaded blocks (54) are sleeved on the outside of the threaded rods (53). The threaded blocks (54) and threaded rods (53) are connected by threads. A bevel gear (55) is fixedly connected to one end of the threaded rod (53). A through groove is opened on one of the support blocks (52). A pull plate (56) is fixedly connected to the bottom of the threaded block (54). The pull plate (56) passes through the through groove and slides in contact with it. A limit rod (57) is fixedly connected between the two support blocks (52). The limit rod (57) passes through the threaded block (54) and slides in contact with it. The threaded rods (53) and support blocks (52) are connected by bearings.

7. The online detection device for moisture and basis weight of corrugated base paper based on near-infrared spectroscopy according to claim 6, characterized in that: The bottom of the placement block (44) is fixedly connected to two support plates (58), and a second rotating shaft (59) is embedded on the two support plates (58). A flip plate (60) is provided on one side of the second rotating shaft (59). Two flip blocks (61) are fixedly connected between the flip plate (60) and the second rotating shaft (59). A first gear (62) is fixedly sleeved on the outside of the second rotating shaft (59). A toothed plate (63) meshes with the bottom of the first gear (62). The toothed plate (63) is fixedly connected to the top of the pull plate (56). The second rotating shaft (59) is connected to the support plate (58) through a bearing.

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