A device and method for detecting the bonding performance of a paper gypsum board

Abstract

The application discloses a kind of paper face gypsum board bonding performance detection device and method, wherein device has end positioning structure, end fixed component, positioning pressure mechanism and layered detection mechanism, positioning pressure mechanism drives wet board strip board end around pressure center rotation, to make wet board strip board end to deviate from the broken of wet board block fracture surface side wet board board core of layering state of placement direction break off;Layered detection mechanism detects the broken of wet board block fracture surface side wet board board core of layering state.The application sequentially carries out fixed loading of wet board sample, pressure break and layered detection, in the width direction of gypsum board, the bonding of different parts of upper and lower cover paper is comprehensively checked, improve the comprehensiveness of gypsum board bonding performance check;Avoid the result of judging bonding performance by tearing cover paper alone is influenced by the bonding factor between cover paper and gypsum board, effectively detect the bonding performance of gypsum board, and accurately detect the part of poor bonding performance on gypsum board.

Description

Technical Field

[0001] This invention relates to the field of testing the bonding performance of gypsum board, and specifically to a device and method for testing the bonding performance of paper-faced gypsum board. Background Technology

[0002] In the production of paper-faced gypsum board, before the wet board is dried, the facing paper of the wet board sample is lifted up from the end by hand to separate the facing paper from the board core. The adhesion between the facing paper and the board core is then observed to make a preliminary judgment on the adhesion performance of the dry board.

[0003] Before the wet board is dried, the starch adhesive has not yet migrated to the contact area between the facing paper and the gypsum core. This may result in poor adhesion of the wet board, or even a bare core after the facing paper is torn off, while the dry board shows normal adhesion. In addition, due to the low bonding strength of the gypsum core itself, when foaming and floating occurs, a layer of weak pores will form at the contact area between the upper facing paper and the gypsum core. At this time, when the facing paper of the wet board sample is torn off, due to the poor interlayer bonding of the wet board facing paper itself, a layer of facing paper will usually stick to the surface of the core. However, after drying, due to the stronger interlayer bonding of the facing paper, when the adhesion performance of the facing paper is tested, the facing paper may peel off along with a layer of gypsum.

[0004] Therefore, existing bonding performance testing technologies may yield inaccurate results due to the inability to accurately control the testing time, the failure of starch adhesive to migrate to the correct position, and the failure of the face paper to reach the optimal bonding strength during the drying process. Summary of the Invention

[0005] Therefore, the present invention provides a device and method for testing the bonding performance of paper-faced gypsum board, which effectively solves the problem in the prior art that the bonding performance test results may be inaccurate due to the inability to accurately grasp the testing time, the starch adhesive not migrating to the desired position, and the fact that the bonding strength of the facing paper is not at the optimal testing level during the drying process.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: a testing device for the bonding performance of paper-faced gypsum board, comprising:

[0007] An end positioning structure is set at the end of the wet board strip to fix the end of the wet board strip away from the preset break point and to move the wet board strip forward to the preset break point and then to the pressure center of the positioning and pressure mechanism.

[0008] An end fixing component is disposed at the other end of the wet board strip, and the end fixing component is used to fix the end of the wet board strip near the preset break point;

[0009] A positioning and pressure-applying mechanism is provided on the side of the end fixing component. The positioning and pressure-applying mechanism is used to drive the end of the wet board strip to rotate around the pressure center through the end fixing component, so that the end of the wet board strip is broken off away from the placement direction of the wet board strip and forms a wet board fragment.

[0010] A delamination detection mechanism is installed on a positioning and pressure application mechanism. The delamination detection mechanism is inclined. The positioning and pressure application mechanism drives the wet board block to rotate so that the fracture surface of the wet board block faces the delamination detection mechanism. The delamination detection mechanism is used to collide with the fracture surface of the wet board block to detect the delamination state of the wet board core on one side of the fracture surface of the wet board block.

[0011] The center of rotation of the end of the wet board strip following the positioning and pressure application mechanism coincides with the preset break point on the bottom surface of the wet board strip.

[0012] Furthermore, the end positioning structure includes a positioning translation seat and a lifting fixing plate connected to the positioning translation seat;

[0013] The end of the wet plate strip is fixed between the positioning and translation seat and the lifting and fixing plate. A stepper motor is provided on the side of the positioning and translation seat. The output end of the stepper motor is connected to a connecting threaded rod, and the connecting threaded rod is threadedly connected to the positioning and translation seat.

[0014] Furthermore, the positioning and pressure application mechanism includes a mounting arc frame disposed on the side of the cutting table, a rack disposed on the mounting arc frame, and an external connecting compartment mounted on the mounting arc frame;

[0015] The external connecting compartment is equipped with a drive gear, and the drive gear is equipped with a first drive motor. The drive gear meshes with the rack.

[0016] Furthermore, the outer connecting compartment is slidably mounted on the mounting arc frame, and the mounting arc frame passes through the outer connecting compartment;

[0017] The outer connecting compartment contains a drive compartment, the outer wall of which abuts against the inner wall of the outer connecting compartment, and a force sensor is installed at the abutment point between the inner wall of the outer connecting compartment and the drive compartment.

[0018] Furthermore, the end fixing component includes a telescopic shaft disposed in the drive compartment, an upper abutment plate connected to the end of the telescopic shaft, and a lower abutment plate connected to the upper abutment plate;

[0019] The lower abutment plate is mounted on the upper abutment plate by mounting bolts.

[0020] Furthermore, a limiting plate is provided on the side of the lower abutment plate, and the limiting plate abuts against the upper abutment plate;

[0021] A second drive motor is provided on the side of the lower abutment plate. The output end of the second drive motor is connected to a drive threaded rod, which passes through the limiting plate and is threadedly connected to the limiting plate.

[0022] Furthermore, the layered detection mechanism includes an inclined seat mounted on the mounting arc frame, a telescopic column mounted on the inclined seat, and a detection chamber located at the front end of the telescopic column;

[0023] Several connecting cylinders are installed in parallel inside the testing chamber. The output end of the connecting cylinder is equipped with a testing probe. The head of the testing probe is equipped with a pressure sensor. The testing probe is connected to the core of the wet plate on one side of the fracture surface of the wet plate block.

[0024] Furthermore, a cutting and feeding mechanism is provided on the side of the gypsum board production line. The cutting and feeding mechanism is used to receive the wet board sample cut from the gypsum board production line, cut two wet board strips of the same size from the wet board sample, and push the two wet board strips in sequence for feeding.

[0025] The cutting and feeding mechanism includes a cutting table disposed on the side of the gypsum board production line and a cutting component disposed on the cutting table;

[0026] The cutting table is provided with a first conveying roller group, a flipping plate is provided on the side of the first conveying roller group, a second conveying roller group is provided on the side of the flipping plate, and a waste discharge roller group is provided on the other side of the first conveying roller group.

[0027] Furthermore, a block feeding mechanism is provided on the positioning and pressing mechanism. The block feeding mechanism is used to drive the wet board block to rotate away from the positioning and pressing mechanism and cooperate with the positioning and pressing mechanism to release the positioning of the wet board block, so that the wet board block is fed under the action of gravity.

[0028] The block cutting and feeding mechanism includes a rotating seat disposed in the drive chamber and a third drive motor disposed on the rotating seat; the end of the telescopic shaft is rotatably disposed on the rotating seat via a connecting shaft, and the connecting shaft is connected to the output end of the third drive motor.

[0029] To solve the above-mentioned technical problems, the present invention further provides the following technical solution: a testing method for a testing device for the bonding performance of paper-faced gypsum board, comprising the following steps,

[0030] Step 100: Take a wet board sample from the gypsum board production line and cut it into wet board strips;

[0031] The longitudinal dimension of the cut wet board strips is 50-100mm, and the transverse dimension is the same as the width of the gypsum board.

[0032] Step 200: The two wet board strips are flipped and transported to the positioning and translation seat for fixing;

[0033] Step 300: Move the wet board strip forward until the preset break point on the wet board strip coincides with the center of the wet board strip end as it rotates with the positioning and pressure application mechanism;

[0034] Step 400: Fix the end of the wet board strip and rotate the wet board strip. Break the end of the wet board strip away from the placement direction of the wet board strip and form a wet board block.

[0035] Step 500: Rotate the wet board block until the fracture surface faces the delamination detection mechanism so that the delamination detection mechanism can detect the delamination state of the wet board core on one side of the fracture surface of the wet board block.

[0036] In step 600, the wet board block is rotated away from the positioning and pressure mechanism to complete the unloading. Steps 300, 400, 500 and 600 are repeated to complete the layering status detection of multiple wet board blocks.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] This invention sequentially fixes and feeds wet board samples, applies pressure to break them, and performs delamination testing. By examining the delamination state of the wet board core on one side of the fracture surface of the broken wet board block, the bonding performance of the gypsum board is determined. A comprehensive inspection of the bonding condition of different parts of the upper and lower facing paper is conducted along the width of the gypsum board, improving the comprehensiveness of the gypsum board bonding performance inspection. By breaking the entire gypsum board for testing, the results of judging bonding performance by individually tearing the facing paper are not affected by the bonding factors between the facing paper and the gypsum board, effectively detecting the bonding performance of the gypsum board and accurately identifying areas with poor bonding performance. Attached Figure Description

[0039] 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 described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0040] Figure 1 A schematic diagram of a device for testing the bonding performance of paper-faced gypsum board according to an embodiment of the present invention, used to fix wet gypsum board strips;

[0041] Figure 2A schematic diagram of a device for testing the bonding performance of paper-faced gypsum board according to an embodiment of the present invention, showing how a wet strip of board is broken;

[0042] Figure 3 A schematic diagram of the structure of a paper-faced gypsum board bonding performance testing device for cutting wet board strips, provided in an embodiment of the present invention;

[0043] Figure 4 This is a schematic diagram of the cutting and feeding mechanism and the end positioning structure in an embodiment of the present invention;

[0044] Figure 5 This is a schematic diagram of the cutting and feeding mechanism in an embodiment of the present invention;

[0045] Figure 6 This is a schematic diagram of the end fixing component in an embodiment of the present invention.

[0046] The labels in the diagram represent the following:

[0047] 1-Cutting and feeding mechanism; 2-Positioning and pressure application mechanism; 3-Layer detection mechanism; 4-Block unloading mechanism; 5-Wet board strip; 6-Wet board block; 7-End positioning structure; 8-End fixing component;

[0048] 11-Cutting table; 12-Cut part; 13-First conveyor roller group; 14-Tilting plate; 15-Second conveyor roller group; 16-Waste discharge roller group; 17-Positioning translation seat; 18-Lifting fixing plate; 19-Stepper motor; 110-Connecting threaded rod;

[0049] 21-Mounting arc frame; 22-Rack; 23-External connecting compartment; 24-Drive gear; 25-Drive threaded rod; 26-Drive compartment; 27-Force sensor; 28-Telescopic shaft; 29-Upper abutment plate; 210-Lower abutment plate; 211-Mounting bolt; 212-Limiting plate; 213-Second drive motor;

[0050] 31- Inclined seat; 32- Telescopic column; 33- Detection chamber; 34- Connecting cylinder; 35- Detection probe;

[0051] 41-Rotating seat; 42-Connecting shaft. Detailed Implementation

[0052] 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.

[0053] like Figure 1, Figure 2 and Figure 3 As shown, the present invention provides a device and method for testing the bonding performance of paper-faced gypsum board, wherein the device comprises an end positioning structure 7, an end fixing component 8, a positioning and pressure applying mechanism 2, and a layer detection mechanism 3;

[0054] The end positioning structure 7 is located at the end of the wet board strip 5, used to fix the end of the wet board strip 5 away from the preset break point, and to move the wet board strip 5 forward to the preset break point and then sequentially to the pressure center of the positioning and pressure mechanism 2; the end fixing component 8 is located at the other end of the wet board strip 5, used to fix the end of the wet board strip 5 near the preset break point; the positioning and pressure mechanism 2 is located on the side of the end fixing component 8, used to drive the end of the wet board strip 5 to rotate around the pressure center through the end fixing component 8, so as to... The wet board strip 5 is broken off at the end away from the placement direction of the wet board strip 5, forming a wet board fragment 6; the layer detection mechanism 3 is set on the positioning and pressure mechanism 2, and the layer detection mechanism 3 is set at an angle. The positioning and pressure mechanism 2 drives the wet board fragment 6 to rotate so that the fracture surface of the wet board fragment 6 faces the layer detection mechanism 3. The layer detection mechanism 3 is used to contact the fracture surface of the wet board fragment 6 to detect the layering state of the wet board core on one side of the fracture surface of the wet board fragment 6; wherein, the center of the rotation of the end of the wet board strip 5 following the positioning and pressure mechanism 2 coincides with the preset break point on the bottom surface of the wet board strip 5.

[0055] In this embodiment of the invention, an end positioning structure 7, a positioning pressure mechanism 2, and a layer detection mechanism 3 are provided. The wet board sample is sequentially fixed and fed, pressure-bent, and layered. The bonding performance of the gypsum board is determined by detecting the layering state of the wet board core on one side of the fracture surface of the broken wet board block 6. In the width direction of the gypsum board, the bonding condition of different parts of the upper and lower facing paper is comprehensively checked, which improves the comprehensiveness of the gypsum board bonding performance inspection. By breaking the entire gypsum board for testing, the result of judging the bonding performance by tearing the facing paper separately is not affected by the bonding factors between the facing paper and the gypsum board. The bonding performance of the gypsum board is effectively detected, and the poor bonding performance of the gypsum board is accurately detected.

[0056] This invention employs a fully automated detection method to sample and test gypsum board. The sampled wet gypsum board is placed on a cutting and feeding mechanism 1, which then cuts and feeds the wet sample. The cutting and feeding mechanism 1 of this invention adopts the following preferred embodiments, such as... Figure 4 and Figure 5As shown, the cutting and feeding mechanism 1 includes a cutting table 11 disposed on the side of the gypsum board production line and a cutting piece 12 disposed on the cutting table 11; a first conveying roller group 13 is disposed on the cutting table 11, a flipping plate 14 is disposed on the side of the first conveying roller group 13, a second conveying roller group 15 is disposed on the side of the flipping plate 14, and a waste discharge roller group 16 is disposed on the other side of the first conveying roller group 13.

[0057] In the above embodiment, the first conveying roller 13 and the flipping plate 14 are both located directly below the cutting piece 12. The wet board sample is placed on the first conveying roller 13 and the flipping plate 14 during the cutting process. The wet board sample during the cutting process can be fixed by setting a plate body that can be raised and lowered on the cutting table 11. The present invention cuts the wet board sample into two wet board strips 5 with a longitudinal dimension of 50-100mm and a transverse dimension equal to the width of the entire board. After cutting, the waste discharge roller group 16 drives the remaining board material to be conveyed out. Then, the first conveying roller group 13 drives one of the wet board strips 5 to be transported to the left, forward and right in sequence. The flipping plate 14 flips the other wet board strip 5. Then, the second conveying roller group 15 drives the wet board strip to be transported forward and left in sequence. In this embodiment, the second wet board strip 5 needs to be transported after the first wet board strip 5 has been inspected and unloaded.

[0058] In order to fix and transport the wet board strip 5 after loading, the present invention also provides an end positioning structure 7, which includes a positioning translation seat 17. A lifting fixing plate 18 is connected to the positioning translation seat 17. The end of the wet board strip 5 is fixed between the positioning translation seat 17 and the lifting fixing plate 18. A stepper motor 19 is provided on the side of the positioning translation seat 17. The output end of the stepper motor 19 is connected to a connecting threaded rod 110, which is threadedly connected to the positioning translation seat 17.

[0059] After being transported, the wet board strip 5 is placed between the positioning and translation seat 17 and the lifting and fixing plate 18. The lifting and fixing plate 18 moves down to fix the end of the wet board strip 5. Then, the stepper motor 19 is driven to rotate the connecting threaded rod 110. Under the rotation of the connecting threaded rod 110, the positioning and translation seat 17 moves forward, thereby moving the wet board strip 5 forward so that the preset break point of the wet board strip 5 is moved to the pressure center position in the positioning and pressure mechanism 2.

[0060] This invention uses a positioning and pressure-applying mechanism 2 to break the wet board strip 5 downwards. The positioning and pressure-applying mechanism 2 of this invention adopts the following preferred embodiments, such as... Figure 1As shown, the positioning and pressure application mechanism 2 includes a mounting arc frame 21 disposed on the side of the cutting table 11, a rack 22 disposed on the mounting arc frame 21, and an outer connecting compartment 23 disposed on the mounting arc frame 21; a drive gear 24 is disposed inside the outer connecting compartment 23, a first drive motor is disposed on the drive gear 24, the drive gear 24 meshes with the rack 22, the outer connecting compartment 23 is slidably disposed on the mounting arc frame 21, and the mounting arc frame 21 passes through the outer connecting compartment 23;

[0061] In the above embodiment, the first drive motor drives the drive gear 24 to rotate. Under the rotation of the drive gear 24, the rack 22 and the drive gear 24 are relatively displaced. Since the rack 22 is in a fixed state, the rotation of the drive gear 24 can drive the outer connecting compartment 23 to slide on the mounting arc frame 21.

[0062] In order to fix the other end of the wet board slab 5 so that the outer connecting compartment 23 can drive the wet board slab 5 to rotate together and break the wet board slab 5, a drive compartment 26 is provided in the outer connecting compartment 23. In addition, the present invention also provides an end fixing component 8, which includes a telescopic shaft 28 provided in the drive compartment 26. The end of the telescopic shaft 28 is connected to an upper abutment plate 29. A lower abutment plate 210 is connected to the upper abutment plate 29. The lower abutment plate 210 is installed on the upper abutment plate 29 by mounting bolts 211. A limit plate 212 is provided on the side of the lower abutment plate 210, and the limit plate 212 abuts against the upper abutment plate 29.

[0063] In the above embodiment, the wet board strip 5 is disposed between the upper abutment plate 29 and the lower abutment plate 210 and abuts against the upper abutment plate 29 and the lower abutment plate 210. When the outer connecting compartment 23 slides along the mounting arc frame 21, the wet board strip 5 is driven to rotate around the center point by the drive compartment 26 and the upper abutment plate 29 and the lower abutment plate 210, thereby causing the wet board strip 5 to break downward.

[0064] To limit the movement of the wet slab 5, ensuring that its end stops moving forward after the preset breakpoint on the wet slab 5 reaches the center position inside the mounting bracket 21, the present invention also incorporates the following design: Figure 1 and Figure 6 As shown, a second drive motor 213 is provided on the side of the lower abutment plate 210. The output end of the second drive motor 213 is connected to a drive threaded rod 25. The drive threaded rod 25 passes through the limiting plate 212 and is threadedly connected to the limiting plate 212.

[0065] The second drive motor 213 drives the drive threaded rod 25 to rotate. Under the rotation of the drive threaded rod 25, the limiting plate 212 moves up to the side of the gap between the upper abutment plate 29 and the lower abutment plate 210, limiting the forward movement of the wet plate strip 5. That is to say, when the end of the wet plate strip 5 moves to abut against the limiting plate 212, it can no longer move forward.

[0066] The sliding motion of the outer connecting compartment 23 causes the wet slab 5 to break. In order to detect the breaking time of the wet slab 5 and stop the driving action of the outer connecting compartment 23 after the wet slab 5 breaks, the present invention is designed as follows: the outer wall of the driving compartment 26 abuts against the inner wall of the outer connecting compartment 23, and a force sensor 27 is installed at the abutment between the inner wall of the outer connecting compartment 23 and the driving compartment 26.

[0067] Under the reaction force of the wet plate 5, the force sensor 27 detects a certain force value. When the wet plate 5 breaks, the wet plate 5 does not generate a reaction force. At this time, the value detected by the force sensor 27 changes significantly. It is determined that the wet plate 5 has broken. Then, it is necessary to reverse drive to make the outer connecting compartment 23 slide back, so that the fracture surface of the wet plate block 6 faces the layer detection mechanism 3.

[0068] This invention uses a layered detection mechanism 3 to perform layered detection on the fracture surface of the wet plate fragment 6. The layered detection mechanism 3 of this invention mainly adopts the following preferred embodiments, such as... Figure 1 , Figure 2 and Figure 3 As shown, the layered detection mechanism 3 includes an inclined seat 31 mounted on the mounting arc frame 21, a telescopic column 32 mounted on the inclined seat 31, and a detection chamber 33 located at the front end of the telescopic column 32. Several connecting cylinders 34 are installed in parallel inside the detection chamber 33. The output end of the connecting cylinder 34 is provided with a detection probe 35. A pressure sensor is installed at the head of the detection probe 35. The detection probe 35 is connected to the core of the wet plate on one side of the fracture surface of the wet plate block 6.

[0069] The detection process of the delamination detection mechanism 3 is as follows: the connecting cylinder 34 drives the detection probe 35 to move forward until it contacts the corresponding point on the fracture surface of the wet board block 6. After contact, the value detected by the pressure sensor changes. At this time, the connecting cylinder 34 is driven to reset. During this process, the distance of the detection probe 35 is recorded. The forward movement distance of each detection probe 35 is compared. If the difference in the comparison results is large, it is determined that the gypsum board core has delaminated.

[0070] After the wet board block 6 is inspected, the wet board block 6 is cut into pieces by the block cutting mechanism 4. The block cutting mechanism 4 adopts the following preferred embodiment: the block cutting mechanism 4 includes a rotating seat 41 disposed in the drive chamber 26 and a third drive motor disposed on the rotating seat 41; the end of the telescopic shaft 28 is rotatably disposed on the rotating seat 41 through the connecting shaft 42, and the connecting shaft 42 is connected to the output end of the third drive motor.

[0071] When it is necessary to unload the wet board block 6, the first drive motor drives the outer connecting compartment 23 to slide to the end of the mounting arc frame 21. At this time, the third drive motor drives the connecting shaft 42 to rotate, thereby driving the telescopic shaft 28 to rotate, so that the upper abutment plate 29 and the lower abutment plate 210 are in an inclined state. At this time, under the action of gravity, the wet board block 5 slides down to unload. In order to collect the wet board block 5, a recycling box can be set on the side of the mounting arc frame 21. It should be noted that during the unloading process of the wet board block 5, the second drive motor 213 needs to be driven to drive the drive threaded rod 25 to rotate. Under the rotation of the drive threaded rod 25, the limiting plate 212 moves down, releasing the limit on the wet board block 6 and avoiding stopping it during the falling process.

[0072] In summary, the main implementation process of the present invention is as follows: cutting and feeding: take a wet board sample from the gypsum board production line, place the wet board sample on the first conveyor roller 13 and the flipping plate 14 and fix it, cut it with the cutting part 12 to cut it into two wet board strips 5 of the same specifications, drive the waste roller group 16 to drive the remaining board to be conveyed out, and then drive the first conveyor roller group 13 to transport one of the wet board strips 5 to the left, forward and right in sequence to the positioning translation seat 17 and the lifting fixing plate 18, and the lifting fixing plate 18 moves down to fix the end of the wet board strip 5;

[0073] Pressure breaking: The second drive motor 213 drives the drive threaded rod 25 to rotate. Under the rotation of the drive threaded rod 25, the limiting plate 212 moves upward to the side of the gap between the upper abutment plate 29 and the lower abutment plate 210, limiting the forward movement of the wet strip 5. Then, the stepper motor 19 drives the connecting threaded rod 110 to rotate. Under the rotation of the connecting threaded rod 110, the positioning translation seat 17 moves forward, thereby driving the wet strip 5 to move forward, so that the preset break point of the wet strip 5 is flat. Moved to the pressure center position within the positioning and pressure applying mechanism 2, the end of the wet plate 5 enters between the first abutting plate 29 and the second abutting plate 210, and its side abuts against the limiting plate 212. The first drive motor drives the drive gear 24 to rotate. Under the rotation of the drive gear 24, the rack 22 and the drive gear 24 undergo relative displacement. Since the rack 22 itself is in a fixed state, the rotation of the drive gear 24 can drive the outer connecting compartment 23 to slide on the mounting arc frame 21, thereby causing the end of the wet plate 5 to break off.

[0074] After breaking the wet board strip 5, in order to avoid the end of the wet board strip 5 from colliding with the upper abutment plate 29 and the lower abutment plate 210, it is necessary to drive the stepper motor 19 to move the positioning translation seat 17 backward, thereby moving the wet board strip 5 backward a certain distance.

[0075] Layer detection: After the wet board strip 5 is broken, the first drive motor is driven to make the fracture surface of the wet board fragment 6 face the layer detection mechanism 3, and the cylinder 34 is connected to drive the detection probe 35 to move forward and reset. The distance of the detection probe 35 is recorded. The forward movement distance of each detection probe 35 is compared to determine the layering of the gypsum board core, thereby judging the bonding performance of the gypsum board.

[0076] Unloading: Drive the first drive motor to move the outer connecting compartment 23 to the end of the mounting arc frame 21. At this time, drive the third drive motor to rotate the connecting shaft 42, thereby making the wet board block 5 tilted through the telescopic shaft 28. Drive the second drive motor 213 to release the limit on the wet board block 6. Under the action of gravity, the wet board block 5 slides down and is unloaded.

[0077] After a single wet board block 6 is inspected, the above steps are repeated to allow the wet board strip 5 to continue moving forward and inspect the next wet board block 6 until all the preset break points of the wet board strip 5 are broken. Then, the remaining wet board strip 5 is positioned and cut off by the upper abutment plate 29 and the lower abutment plate 210.

[0078] After the above steps are completed, the bonding performance of the facing paper at different positions on one wet board strip 5 is checked. Then, the flipping plate 14 flips another wet board strip 5, and the second conveying roller group 15 drives the wet board strip forward and to the left in sequence. The above operation is repeated to complete the bonding performance check of the facing paper at different positions on another wet board strip 6.

[0079] The present invention provides a testing method for a testing device of the bonding performance of paper-faced gypsum board, comprising the following steps:

[0080] Step 100: Take a wet board sample from the gypsum board production line and cut it into wet board strips 5;

[0081] The longitudinal dimension of the cut wet board strips is 50-100mm, and the transverse dimension is the same as the width of the gypsum board.

[0082] Step 200: The two wet board strips 5 are flipped and transported to the positioning and translation seat 17 for fixing;

[0083] Step 300: Move the wet board strip 5 forward until the preset break point on the wet board strip 5 coincides with the center of the end of the wet board strip 5 as it rotates with the positioning and pressure mechanism 2.

[0084] Step 400: Fix the end of the wet board strip 5 and rotate the wet board strip 5. Break the end of the wet board strip 5 away from the placement direction of the wet board strip 5 and form a wet board block 6.

[0085] Step 500: Rotate the wet board block 6 until the fracture surface faces the delamination detection mechanism 3 so that the delamination detection mechanism 3 can detect the delamination state of the wet board core on one side of the fracture surface of the wet board block 6.

[0086] In step 600, the wet board block 6 is rotated inward away from the positioning and pressure mechanism 2 to complete the unloading. Steps 300, 400, 500 and 600 are repeated to complete the layering state detection of multiple wet board blocks 6.

[0087] In the above embodiments, if no delamination occurs in the gypsum board core, it can be determined that the bonding performance of the facing paper is not a problem after drying. If delamination occurs in the gypsum board core, it indicates that the gypsum bonding strength of the gypsum board core itself is low. Under stress breakage, the structure of the gypsum core material is easily damaged, and the bonding performance of the facing paper after drying will be affected. Attention should be paid to adjusting the batching scheme to avoid problems such as foaming and floating. The above method can detect the bonding performance of the dry board, make accurate judgments in a timely manner, facilitate timely adjustment of the production batching scheme, and avoid the expansion of losses caused by problems that cannot be detected by the original method.

[0088] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A device for testing the bonding performance of paper-faced gypsum board, characterized in that, have: An end positioning structure (7) is set at the end of the wet board strip (5) to fix the end of the wet board strip (5) away from the preset break point, and to drive the wet board strip (5) forward to the preset break point of the wet board strip (5) and move it to the pressure center of the positioning pressure mechanism (2) in sequence. An end fixing component (8) is provided at the other end of the wet board strip (5). The end fixing component is used to fix the wet board strip (5) at one end near the preset break point. The positioning and pressure mechanism (2) is provided on the side of the end fixing component (8). The positioning and pressure mechanism (2) is used to drive the end of the wet board strip (5) to rotate around the pressure center through the end fixing component (8), so that the end of the wet board strip (5) is broken off away from the placement direction of the wet board strip (5) and a wet board block (6) is formed. A layer detection mechanism (3) is set on a positioning and pressure application mechanism (2). The layer detection mechanism (3) is set at an angle. The positioning and pressure application mechanism (2) drives the wet board block (6) to rotate so that the fracture surface of the wet board block (6) faces the layer detection mechanism (3). The layer detection mechanism (3) is used to contact the fracture surface of the wet board block (6) to detect the layering state of the wet board core on one side of the fracture surface of the wet board block (6). Wherein, the center of rotation of the end of the wet board strip (5) following the positioning and pressure application mechanism (2) coincides with the preset break point on the bottom surface of the wet board strip (5); A cutting and feeding mechanism (1) is provided on the side of the gypsum board production line. The cutting and feeding mechanism (1) is used to receive the wet board sample cut on the gypsum board production line, cut two wet board strips (5) of the same size from the wet board sample, and push the two wet board strips (5) in sequence. The cutting and feeding mechanism (1) includes a cutting table (11) set on the side of the gypsum board production line and a cutting piece (12) set on the cutting table (11). The cutting table (11) is provided with a first conveying roller group (13), a flipping plate (14) is provided on the side of the first conveying roller group (13), a second conveying roller group (15) is provided on the side of the flipping plate (14), and a waste discharge roller group (16) is provided on the other side of the first conveying roller group (13).

2. The testing device for the bonding performance of paper-faced gypsum board according to claim 1, characterized in that, The end positioning structure (7) includes a positioning translation seat (17) and a lifting fixing plate (18) connected to the positioning translation seat (17). The end of the wet plate strip (5) is fixed between the positioning translation seat (17) and the lifting fixed plate (18). A stepper motor (19) is provided on the side of the positioning translation seat (17). The output end of the stepper motor (19) is connected to a connecting threaded rod (110). The connecting threaded rod (110) is threadedly connected to the positioning translation seat (17).

3. The testing device for the bonding performance of paper-faced gypsum board according to claim 2, characterized in that, The positioning and pressure application mechanism (2) includes a mounting arc frame (21) disposed on the side of the cutting table (11), a rack (22) disposed on the mounting arc frame (21), and an outer connecting compartment (23) mounted on the mounting arc frame (21). The outer connecting compartment (23) is provided with a drive gear (24), and a first drive motor is provided on the drive gear (24). The drive gear (24) meshes with the rack (22).

4. The testing device for the bonding performance of paper-faced gypsum board according to claim 3, characterized in that, The outer connecting compartment (23) is slidably mounted on the mounting arc frame (21), and the mounting arc frame (21) passes through the outer connecting compartment (23). The outer connecting compartment (23) is provided with a drive compartment (26), the outer wall of the drive compartment (26) abuts against the inner wall of the outer connecting compartment (23), and a force sensor (27) is installed at the abutment between the inner wall of the outer connecting compartment (23) and the drive compartment (26).

5. The testing device for the bonding performance of paper-faced gypsum board according to claim 4, characterized in that, The end fixing component (8) includes a telescopic shaft (28) disposed in the drive compartment (26), an upper abutment plate (29) connected to the end of the telescopic shaft (28), and a lower abutment plate (210) connected to the upper abutment plate (29). The lower abutment plate (210) is mounted on the upper abutment plate (29) by mounting bolts (211).

6. The testing device for the bonding performance of paper-faced gypsum board according to claim 5, characterized in that, A limiting plate (212) is provided on the side of the lower abutment plate (210), and the limiting plate (212) abuts against the upper abutment plate (29); A second drive motor (213) is provided on the side of the lower abutment plate (210). The output end of the second drive motor (213) is connected to a drive threaded rod (25). The drive threaded rod (25) passes through the limiting plate (212) and is threadedly connected to the limiting plate (212).

7. The testing device for the bonding performance of paper-faced gypsum board according to claim 6, characterized in that, The layered detection mechanism (3) includes an inclined seat (31) mounted on the mounting arc frame (21), a telescopic column (32) mounted on the inclined seat (31), and a detection chamber (33) located at the front end of the telescopic column (32). Several connecting cylinders (34) are installed in parallel inside the detection chamber (33). The output end of the connecting cylinder (34) is provided with a detection probe (35). A pressure sensor is installed at the head of the detection probe (35). The detection probe (35) is connected to the core of the wet plate on one side of the fracture surface of the wet plate block (6).

8. The testing device for the bonding performance of paper-faced gypsum board according to claim 7, characterized in that, A block feeding mechanism (4) is provided on the positioning and pressure mechanism (2). The block feeding mechanism (4) is used to drive the wet board block (6) to rotate away from the positioning and pressure mechanism (2) and cooperate with the positioning and pressure mechanism (2) to release the positioning of the wet board block (6) so that the wet board block (6) is fed by gravity. The block cutting and feeding mechanism (4) includes a rotating seat (41) disposed in the drive chamber (26) and a third drive motor disposed on the rotating seat (41); The end of the telescopic shaft (28) is rotatably mounted on the rotating seat (41) via a connecting shaft (42), and the connecting shaft (42) is connected to the output end of the third drive motor.

9. A testing method for a testing device for the bonding performance of paper-faced gypsum board according to any one of claims 1 to 8, characterized in that, Includes the following steps, Step 100: Take a wet board sample from the gypsum board production line and cut it into wet board strips; The longitudinal dimension of the cut wet board strips is 50-100mm, and the transverse dimension is the same as the width of the gypsum board. Step 200: The two wet board strips are flipped and transported to the positioning and translation seat for fixing; Step 300: Move the wet board strip forward until the preset break point on the wet board strip coincides with the center of rotation of the end of the wet board strip following the positioning and pressure application mechanism. Step 400: Fix the end of the wet board strip and rotate the wet board strip. Break the end of the wet board strip away from the placement direction of the wet board strip and form a wet board block. Step 500: Rotate the wet board block until the fracture surface faces the delamination detection mechanism so that the delamination detection mechanism can detect the delamination state of the wet board core on one side of the fracture surface of the wet board block. In step 600, the wet board block is rotated away from the positioning and pressure mechanism to complete the unloading. Steps 300, 400, 500 and 600 are repeated to complete the layering status detection of multiple wet board blocks.

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