A wood moisture content detection device for steam processing of a composite board and a method thereof

Abstract

The application discloses a kind of wood moisture content detection device and method for composite board steam processing, belong to composite board processing technical field.The wood moisture content detection device for composite board steam processing of the application, including device support, the device support includes symmetrically arranged side plate, detection bottom plate connected two side plates, first rack arranged on the two sides of detection bottom plate and movable roller movably connected with first rack, support plate is symmetrically arranged on the inner wall of side plate.The application solves the problem that the existing detection device cannot adapt to different sizes of plate, the wood moisture content detection device and method for composite board steam processing proposed by the application first removes the moisture on the surface of composite board using the water removal assembly, which can reduce the influence of external moisture on the detection of composite board, and then adjusts the position by the first detection frame and the second detection, to detect composite boards of different thickness and width.

Description

Technical Field

[0001] This invention relates to the field of composite board processing technology, specifically to a device and method for detecting the moisture content of wood in composite board steam processing. Background Technology

[0002] The composite moisture content is tested using a moisture content meter. Manual testing usually only checks one or two locations, which cannot accurately reflect the moisture content of the entire veneer. Manual testing is also prone to inconsistencies in the results from different testing locations, leading to different results for the same veneer.

[0003] Chinese Patent Publication No. CN115980325A discloses a veneer quality inspection device, including an inspection table, on which a moisture content meter, a thickness meter, and an electronic measuring clamp are also included. The moisture content meter, thickness meter, and electronic measuring clamp are all electrically connected to a central control unit. An image acquisition device is disposed above the inspection table. The central control unit is used to collect the moisture content data, thickness data, size data, and image data of the veneer, and analyze them to generate a veneer quality inspection report.

[0004] While this application addresses to some extent the technical problem in the prior art that manual inspection typically only checks one or two locations and cannot accurately reflect the moisture content of the entire veneer, the moisture content meter in this application has a fixed position, cannot be changed for different types of boards, and cannot adapt to boards of different sizes. Furthermore, after the composite board is steam-processed, water droplets should be avoided to prevent them from sticking and affecting the accuracy of the meter. Summary of the Invention

[0005] The purpose of this invention is to provide a wood moisture content detection device and method for steam processing of composite boards. By first removing the moisture from the surface of the composite board using a dehydration component when detecting the moisture content, the influence of external moisture on the detection of the composite board can be reduced. Then, the first detection frame sends information and the second detection frame receives the information. The first detection frame moves with the moving frame, which can continuously change the detection position of the composite board and perform multi-position detection, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wood moisture content detection device for steam processing of composite boards, comprising a device support, the device support comprising symmetrically arranged side plates, a detection base plate connecting the two side plates, a first rack disposed on both sides of the detection base plate and a movable roller movably connected to the first rack, a support plate symmetrically arranged on the inner wall of the side plates, a movable frame movably connected to the support plate, a water removal assembly movably connected to the side plates via bearings, a detection upper plate movably connected to the upper end of the side plates, a second detection frame disposed on the detection base plate, second racks symmetrically arranged on both sides of the lower surface of the detection upper plate, and a first detection frame disposed on the detection upper plate.

[0007] Preferably, the upper end of the side plate is provided with a sliding groove, which is movably connected to the detection upper plate, and the side plate is also provided with an arc-shaped groove, which is connected to the water drainage component.

[0008] Preferably, the dewatering assembly includes a fixed dewatering roller, a movable dewatering roller, a rotating frame, and a drive motor. The fixed dewatering roller is movably connected to the side plate via bearings. The ends of both the fixed and movable dewatering rollers are movably connected to the rotating frame. The central axis of the fixed dewatering roller passes through the rotating frame, and the central axis of the fixed dewatering roller is fixedly connected to the output end of the drive motor.

[0009] Preferably, the surfaces of both the fixed and movable dewatering rollers are provided with absorbent fabric, and the ends of both the fixed and movable dewatering rollers are provided with synchronous gears, with the two synchronous gears meshing with each other. The synchronous gear near the bottom meshes with the third rack. The central axis of the movable dewatering roller extends into the arc-shaped groove, and a limiting plate is fixedly connected to the end of the central axis of the movable dewatering roller. The limiting plate is connected to the side plate by bolts.

[0010] Preferably, both the first and second testing frames include a lifting cylinder, a support frame, a telescopic frame, and a testing probe. The output end of the lifting cylinder is connected to the end of the support frame, the telescopic frame is movably connected to the support frame, and the testing probe is installed on the telescopic frame.

[0011] Preferably, the support frame has a limiting groove, and the upper surface of the support frame is provided with a limiting seat, on which a control screw is movably connected.

[0012] Preferably, the telescopic frame is movably connected to the limiting groove, and an adjusting rod is provided on the telescopic frame. A threaded sleeve is fixedly connected to the upper end of the adjusting rod, and the threaded sleeve engages with the control screw.

[0013] Preferably, the movable frame includes a third rack, a gear frame, and a push gear. One end of the third rack is fixedly connected to the gear frame, and the push gear is movably connected to the gear frame. The push gear meshes with both the first rack and the second rack. A lifting plate is provided on the side of the first rack near the movable roller, and the lifting plate is movably connected to the gear frame.

[0014] Preferably, the height of the movable roller is higher than the height of the second detection frame, and the second detection frame is disposed within the gap of the movable roller.

[0015] Another technical problem to be solved by the present invention is to provide a detection method for a wood moisture content detection device used in steam processing of composite boards, comprising the following steps:

[0016] S1: Adjust the dewatering assembly according to the thickness of the composite board, and adjust the angle of the rotating frame by adjusting the limiting plate so that the vertical height of the rotating movable dewatering roller and the fixed dewatering roller matches the thickness of the composite board, and fix the position of the limiting plate.

[0017] S2: Pass one end of the steam-processed composite plate between the movable dewatering roller and the fixed dewatering roller, and move it toward the detection base plate;

[0018] S3: Start the drive motor. The drive motor drives the fixed dewatering roller and the movable dewatering roller to rotate in opposite directions, pushing the composite plate towards the detection base plate. At the same time, the fixed dewatering roller and the movable dewatering roller remove the water droplets adhering to the surface of the composite plate.

[0019] S4: The synchronous gear drives the third rack to move along the support plate direction, pushes the push gear to move on the first rack, and the push gear drives the second rack to move, so that the detection plate is displaced on the side plate;

[0020] S5: When the first and second testing frames move to corresponding vertical positions, the drive motor is stopped to measure moisture content. The first testing frame corresponds to the second testing frame at different positions to test multiple positions on the composite board.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention first removes moisture from the surface of the composite board using a dehydration component, which reduces the impact of external moisture on the composite board inspection. Then, the first inspection frame sends information, and the second inspection frame receives the information. The first inspection frame moves with the moving frame, which can continuously change the inspection position of the composite board and perform multi-position inspection.

[0023] 2. The present invention allows the vertical height between the movable dewatering roller and the fixed dewatering roller to be changed by a rotating frame to adapt to composite boards of different thicknesses, enabling moisture detection after removing surface water droplets from composite boards of different thicknesses.

[0024] 3. The present invention uses a lifting cylinder to adjust the height of the first and second testing frames and a telescopic frame to adjust the distance between the testing probes, which can adapt to the thickness and width of the composite board.

[0025] 4. This invention uses a drive motor to rotate a fixed dewatering roller and a movable dewatering roller in opposite directions, which can apply pressure to the composite plate and push the composite plate towards the detection base plate. When the synchronous gear rotates, it can also drive the third rack to move along the support plate, thereby pushing the push gear to move on the first rack, so that the detection upper plate is displaced on the side plate, controlling the position of the detection base plate and the detection upper plate. The operation is simple. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the wood moisture content detection device of the present invention;

[0027] Figure 2 This is an exploded view of the wood moisture content detection device of the present invention;

[0028] Figure 3 This is a partial structural diagram of the wood moisture content detection device of the present invention;

[0029] Figure 4 This is a structural diagram showing the connection between the dewatering component and the movable frame of the present invention;

[0030] Figure 5 This is a structural diagram of the detection upper plate of the present invention;

[0031] Figure 6 This is a structural diagram of the first detection frame of the present invention;

[0032] Figure 7 This is a diagram showing the initial state of the wood moisture content detection device of the present invention before it is put into operation.

[0033] In the diagram: 1. Device bracket; 11. Side plate; 111. Support plate; 112. Slide groove; 113. Arc groove; 12. Detection base plate; 13. First rack; 131. Lifting plate; 14. Movable roller; 2. Moving frame; 21. Third rack; 22. Gear frame; 23. Push gear; 3. Water removal assembly; 31. Fixed water removal roller; 311. Synchronous gear; 32. Movable water removal roller; 321. Limiting plate; 33. Rotating frame; 34. Drive motor; 4. Detection upper plate; 41. Second rack; 5. First detection frame; 51. Lifting cylinder; 52. Support frame; 521. Limiting groove; 522. Limiting seat; 523. Control screw; 53. Telescopic frame; 531. Adjusting rod; 532. Threaded sleeve; 54. Detection probe; 6. Second detection frame. Detailed Implementation

[0034] 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.

[0035] To address the issues of existing moisture content meters having a fixed position, being unable to adapt to different types of boards, being unable to accommodate boards of varying sizes, and the problem of water droplets adhering to composite boards after steam processing affecting the meter's accuracy, please refer to [the relevant documentation / reference]. Figures 1-7 This embodiment provides the following technical solution:

[0036] A wood moisture content detection device for steam processing of composite boards includes a device support 1. The device support 1 includes side plates 11 symmetrically arranged, a detection base plate 12 connecting the two side plates 11, a first rack 13 arranged on both sides of the detection base plate 12, and a movable roller 14 movably connected to the first rack 13. A lifting plate 131 is arranged on the side of the first rack 13 near the movable roller 14, and the lifting plate 131 is movably connected to the gear frame 22.

[0037] Specifically, the lifting plate 131 limits the gear frame 22, improving the stability of the gear frame 22's movement. At the same time, the lifting plate 131 raises both sides of the detection base plate 12, which can limit the composite plate that moves onto the movable roller 14.

[0038] Support plates 111 are symmetrically arranged on the inner wall of the side plate 11. A movable frame 2 is movably connected to the support plate 111. A sliding groove 112 is opened at the upper end of the side plate 11. The sliding groove 112 is movably connected to the detection upper plate 4. An arc groove 113 is also opened on the side plate 11. The arc groove 113 is connected to the water drainage component 3.

[0039] Specifically, the lower surface of the upper detection plate 4 is provided with a slide bar that is movably connected to the slide groove 112. The slide bar is movably connected to the slide groove 112 to restrict the position of the upper detection plate 4, so that the upper detection plate 4 can only move within the slide groove 112.

[0040] The height of the movable roller 14 is higher than the height of the second detection frame 6, and the second detection frame 6 is set in the gap of the movable roller 14.

[0041] Specifically, when simply moving the board, the second inspection frame 6 does not work, and the movable roller 14 can reduce the resistance when the composite board moves. When the second inspection frame 6 works, the movable roller 14 supports the composite board, and the inspection probe 54 of the second inspection frame 6 moves upward until it contacts the board for inspection.

[0042] The movable frame 2 includes a third rack 21, a gear frame 22, and a push gear 23. One end of the third rack 21 is fixedly connected to the gear frame 22, and the push gear 23 is movably connected to the gear frame 22. The push gear 23 meshes with the first rack 13 and the second rack 41 simultaneously. When the push gear 23 rotates, it can simultaneously drive the first rack 13 to mesh and the second rack 41 to move in opposite directions. When the position of the first rack 13 is fixed, the push gear 23 rotates and moves on the first rack 13, and the second rack 41 moves in the same direction with accelerated movement, thereby causing the relative position of the detection upper plate 4 and the detection base plate 12 to change.

[0043] The upper end of the side plate 11 is movably connected to the detection upper plate 4. The two sides of the lower surface of the detection upper plate 4 are symmetrically provided with second racks 41. The detection upper plate 4 is provided with a first detection frame 5, and the detection bottom plate 12 is provided with a second detection frame 6.

[0044] Both the first testing frame 5 and the second testing frame 6 include a lifting cylinder 51, a support frame 52, a telescopic frame 53, and a testing probe 54. The output end of the lifting cylinder 51 is connected to the end of the support frame 52. The telescopic frame 53 is movably connected to the support frame 52, and the testing probe 54 is installed on the telescopic frame 53. The testing probe 54 on the first testing frame 5 is a signal transmitter, and the testing probe 54 on the second testing frame 6 is a signal receiver. The number of signal receivers is greater than the number of signal transmitters. The second testing frame 6 is fixed in position and cannot move. When the composite board moves onto the movable roller 14, the second testing frame 6 receives the signal at a relatively fixed position, while the first testing frame 5 moves with the upper testing plate 4, thereby continuously changing its position. When the positions of the testing probe 54 on the first testing frame 5 and the testing probe 54 on the second testing frame 6 correspond, the moisture content of the composite board at that location can be measured.

[0045] Specifically, when the lifting cylinder 51 is working, it drives the support frame 52 to move up or down, which can control the distance between the detection probe 54 and the composite board, and can adapt to the detection of boards of different thicknesses. In addition, the telescopic frame 53 can extend and retract to adjust the distance between the detection probes 54, thereby controlling the detection probes 54 to measure the moisture at different positions on the composite board.

[0046] The support frame 52 has a limiting groove 521, and the upper surface of the support frame 52 is provided with a limiting seat 522. A control screw 523 is movably connected to the limiting seat 522. The telescopic frame 53 is movably connected to the limiting groove 521. An adjusting rod 531 is provided on the telescopic frame 53. A threaded sleeve 532 is fixedly connected to the upper end of the adjusting rod 531. The threaded sleeve 532 engages with the control screw 523.

[0047] Specifically, under the constraint of the adjusting rod 531, the control screw 523 rotates, which can only drive the threaded sleeve 532 to move along the direction of the control screw 523. The lower end of the adjusting rod 531 drives the telescopic frame 53 to extend or shorten, thereby controlling the distance between the detection probes 54, so as to adapt to the detection of composite plates of different widths.

[0048] The side plate 11 is movably connected to the water removal assembly 3 via bearings. The water removal assembly 3 includes a fixed water removal roller 31, a movable water removal roller 32, a rotating frame 33, and a drive motor 34. The fixed water removal roller 31 is movably connected to the side plate 11 via bearings. The ends of the fixed water removal roller 31 and the movable water removal roller 32 are simultaneously movably connected to the rotating frame 33. The central axis of the fixed water removal roller 31 passes through the rotating frame 33, and the central axis of the fixed water removal roller 31 is fixedly connected to the output end of the drive motor 34.

[0049] Specifically, when the drive motor 34 is working, it drives the fixed dewatering roller 31 to rotate. The rotating frame 33 can rotate around the central axis of the fixed dewatering roller 31, thereby changing the position of the movable dewatering roller 32. This causes the movable dewatering roller 32 to move within the arc groove 113, changing the overall height of the movable dewatering roller 32 and the vertical height between the movable dewatering roller 32 and the fixed dewatering roller 31. This allows it to adapt to composite boards of different thicknesses and remove water from composite boards of different thicknesses.

[0050] Both the fixed dewatering roller 31 and the movable dewatering roller 32 are provided with absorbent fabric, and both the fixed dewatering roller 31 and the movable dewatering roller 32 are provided with synchronous gears 311 at their ends. The two synchronous gears 311 mesh with each other, and the synchronous gear 311 near the bottom meshes with the third rack 21.

[0051] Specifically, when the drive motor 34 drives the fixed dewatering roller 31 to rotate, the movable dewatering roller 32 rotates simultaneously. The fixed dewatering roller 31 and the movable dewatering roller 32 rotate towards each other, which can apply pressure to the composite plate and push the composite plate to move towards the detection base plate 12. When the synchronous gear 311 rotates, it can also drive the third rack 21 to move along the support plate 111, thereby pushing the push gear 23 to move on the first rack 13. When the first rack 13 is fixed, the push gear 23 rotates, and the second rack 41 moves, causing the detection upper plate 4 to be displaced on the side plate 11. This controls the detection base plate 12 and the detection upper plate 4 to move from misalignment to corresponding position, and then back to misalignment.

[0052] The central axis of the movable dewatering roller 32 extends into the arc groove 113, and the end of the central axis of the movable dewatering roller 32 is fixedly connected to a limiting plate 321, which is connected to the side plate 11 by bolts.

[0053] Specifically, after the rotating frame 33 rotates around the central axis of the fixed dewatering roller 31, the position of the limiting plate 321 can be fixed by bolts to ensure that the position of the movable dewatering roller 32 does not move.

[0054] To better illustrate the detection method of a wood moisture content detection device for steam processing of composite boards, this embodiment presents a detection method for a wood moisture content detection device for steam processing of composite boards, including the following steps:

[0055] Step 1: Adjust the dewatering assembly 3 according to the thickness of the composite board, and adjust the angle of the rotating frame 33 by adjusting the limiting plate 321 so that the vertical height of the rotating movable dewatering roller 32 and the fixed dewatering roller 31 matches the thickness of the composite board, and fix the position of the limiting plate 321.

[0056] Step 2: Pass one end of the steam-processed composite plate between the movable dewatering roller 32 and the fixed dewatering roller 31, and move it toward the detection base plate 12;

[0057] Step 3: Turn on the drive motor 34. The drive motor 34 drives the fixed dewatering roller 31 and the movable dewatering roller 32 to rotate in opposite directions, pushing the composite plate towards the detection base plate 12. At the same time, the fixed dewatering roller 31 and the movable dewatering roller 32 remove the water droplets adhering to the surface of the composite plate.

[0058] Step 4: Synchronous gear 311 drives the third rack 21 to move along the support plate 111, pushing the push gear 23 to move on the first rack 13, and the push gear 23 drives the second rack 41 to move, so that the detection plate 4 is displaced on the side plate 11.

[0059] Step 5: When the first testing frame 5 and the second testing frame 6 move to the corresponding vertical positions, control the drive motor 34 to stop and perform moisture measurement. The first testing frame 5 corresponds to the second testing frame 6 at different positions to perform testing on multiple positions on the composite board.

[0060] In summary, the present invention provides a wood moisture content detection device and method for steam processing of composite boards. When detecting the moisture content of composite boards, the dewatering component 3 first removes moisture from the surface of the composite board, reducing the influence of external moisture on the detection. Then, the first detection frame 5 sends information, and the second detection frame 6 receives the information. The first detection frame 5 moves with the movable frame 2, continuously changing the detection position of the composite board for multi-position detection. The vertical height between the movable dewatering roller 32 and the fixed dewatering roller 31 can be changed by the rotating frame 33 to accommodate composite boards of different thicknesses, enabling moisture detection after removing surface water droplets from composite boards of varying thicknesses. The first and second detection frames 5 and 6 are height-adjusted by the lifting cylinder 51, and the distance between the detection probes 54 is adjusted by the telescopic frame 53, which can adapt to the thickness and width of the composite plate. The drive motor 34 drives the fixed dewatering roller 31 and the movable dewatering roller 32 to rotate in opposite directions, which can apply pressure to the composite plate and push the composite plate to move towards the detection base plate 12. When the synchronous gear 311 rotates, it can also drive the third rack 21 to move along the support plate 111, thereby pushing the push gear 23 to move on the first rack 13, so that the detection upper plate 4 is displaced on the side plate 11, controlling the position of the detection base plate 12 and the detection upper plate 4. The operation is simple.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wood moisture content detection device for steam processing of composite boards, comprising a device support (1), characterized in that: The device support (1) includes symmetrically arranged side plates (11), a detection base plate (12) connecting the two side plates (11), a first rack (13) arranged on both sides of the detection base plate (12), and a movable roller (14) movably connected to the first rack (13). A support plate (111) is symmetrically arranged on the inner wall of the side plate (11). A movable frame (2) is movably connected to the support plate (111). A water removal assembly (3) is movably connected to the side plate (11) through a bearing. A detection upper plate (4) is movably connected to the upper end of the side plate (11). A second detection frame (6) is arranged on the upper surface of the detection base plate (12). A second rack (41) is symmetrically arranged on both sides of the lower surface of the detection upper plate (4). A first detection frame (5) is arranged on the detection upper plate (4). The upper end of the side plate (11) is provided with a sliding groove (112), which is movably connected to the detection upper plate (4). The side plate (11) is also provided with an arc groove (113), which is connected to the water removal component (3). The dewatering assembly (3) includes a fixed dewatering roller (31), a movable dewatering roller (32), a rotating frame (33), and a drive motor (34). The fixed dewatering roller (31) is movably connected to the side plate (11) through a bearing. The ends of the fixed dewatering roller (31) and the movable dewatering roller (32) are simultaneously movably connected to the rotating frame (33). The central axis of the fixed dewatering roller (31) passes through the rotating frame (33), and the central axis of the fixed dewatering roller (31) is fixedly connected to the output end of the drive motor (34). The surfaces of the fixed dewatering roller (31) and the movable dewatering roller (32) are both provided with absorbent fabric, and the ends of the fixed dewatering roller (31) and the movable dewatering roller (32) are both provided with synchronous gears (311), and the two synchronous gears (311) mesh with each other. The synchronous gear (311) closer to the bottom meshes with the third rack (21). The central axis of the movable dewatering roller (32) extends into the arc groove (113), and the end of the central axis of the movable dewatering roller (32) is fixedly connected to a limiting plate (321). The limiting plate (321) is connected to the side plate (11) by bolts. The movable frame (2) includes a third rack (21), a gear frame (22) and a push gear (23). One end of the third rack (21) is fixedly connected to the gear frame (22), and the push gear (23) is movably connected to the gear frame (22). The push gear (23) meshes with the first rack (13) and the second rack (41) at the same time. A lifting plate (131) is provided on the side of the first rack (13) near the movable roller (14), and the lifting plate (131) is movably connected to the gear frame (22).

2. The wood moisture content detection device for steam processing of composite boards according to claim 1, characterized in that: The first detection frame (5) and the second detection frame (6) both include a lifting cylinder (51), a support frame (52), a telescopic frame (53) and a detection probe (54). The output end of the lifting cylinder (51) is connected to the end of the support frame (52). The telescopic frame (53) is movably connected to the support frame (52), and the detection probe (54) is installed on the telescopic frame (53).

3. The wood moisture content detection device for steam processing of composite boards according to claim 2, characterized in that: The support frame (52) has a limiting groove (521) and a limiting seat (522) is provided on the upper surface of the support frame (52). A control screw (523) is movably connected to the limiting seat (522).

4. The wood moisture content detection device for steam processing of composite boards according to claim 3, characterized in that: The telescopic frame (53) is movably connected to the limiting groove (521). An adjusting rod (531) is provided on the telescopic frame (53). A threaded sleeve (532) is fixedly connected to the upper end of the adjusting rod (531). The threaded sleeve (532) meshes with the control screw (523).

5. The wood moisture content detection device for steam processing of composite boards according to claim 4, characterized in that: The height of the movable roller (14) is higher than the height of the second detection frame (6), and the second detection frame (6) is set in the gap of the movable roller (14).

6. A method for detecting the moisture content of wood in a composite board steam processing device as described in claim 5, characterized in that, Includes the following steps: S1: Adjust the dewatering assembly (3) according to the thickness of the composite plate, and adjust the angle of the rotating frame (33) through the limiting plate (321) so that the vertical height of the rotating movable dewatering roller (32) and the fixed dewatering roller (31) matches the thickness of the composite plate, and fix the position of the limiting plate (321); S2: Pass one end of the steam-processed composite plate through the movable dewatering roller (32) and the fixed dewatering roller (31) and move it towards the detection base plate (12); S3: Turn on the drive motor (34) to work, and drive the fixed dewatering roller (31) and the movable dewatering roller (32) to rotate in opposite directions, pushing the composite plate towards the detection base plate (12), and fix the dewatering assembly (32). Roller (31) and movable dewatering roller (32) simultaneously remove water droplets adhering to the surface of the composite board; S4: Synchronous gear (311) drives the third rack (21) to move along the direction of support plate (111), pushing push gear (23) to move on the first rack (13), and push gear (23) drives the second rack (41) to move, so that the detection plate (4) is displaced on the side plate (11); S5: When the first detection frame (5) and the second detection frame (6) move to the corresponding upper and lower positions, control the drive motor (34) to stop, and perform moisture measurement. The first detection frame (5) corresponds to the second detection frame (6) at different positions, and multiple positions on the composite board are detected.

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