Automatic detection equipment and method for hardness of gypsum plaster board

Abstract

The invention discloses equipment and a method for automatically detecting the hardness of a gypsum plaster board, and relates to the field of building material detection equipment. The automatic detection equipment for the hardness of the gypsum plaster board comprises a supporting assembly, the supporting assembly comprises a base and supporting columns, and the supporting columns are arranged at the two ends of the top face of the base; the fixing assembly is arranged on the top surface of the base, and the fixing assembly comprises a plurality of clamping pieces; the steel needle assembly comprises a plurality of steel needles and force value sensors, the force value sensors are arranged on the steel needles, the number of the steel needles is the same as that of the clamping pieces, and the steel needle assembly is movably arranged on the supporting column through a lifting assembly. The multiple samples are fixed to the base through the clamping pieces, the positions of the samples and the positions of the steel needles are adjusted so that the steel needles can be located over the preset measuring points of the corresponding samples, and finally the steel needles are driven by the lifting assembly to be inserted into the samples by the preset depth. According to the automatic detection equipment for the hardness of the gypsum plaster board, the time required for testing the hardness of the gypsum plaster board is shortened.

Description

Technical Field

[0001] The present invention relates to the field of building material testing equipment, and in particular to an automatic testing device and method for the hardness of a gypsum board. Background Art

[0002] Gypsum board is widely used in ceilings, interior partitions, and wall coverings in buildings such as residences, offices, shops, hotels, and industrial plants. Hardness is a key characteristic of gypsum board. Testing methods are based on GB / T 9775-2008, "Gypsum Board." The current test steps are as follows: Prepare test samples with five plates as a group, see Figure 1 As shown in the figure, edge hardness test pieces 1 and end hardness test pieces 2 are obtained from the plate. There are 10 edge hardness test pieces 1 and 5 end hardness test pieces 2. When measuring the end hardness, the test piece is placed vertically on its side and then clamped with a fixture. Press the center line of the thickness of the test piece. Figure 2 Three measuring points are arranged as shown; the pressure testing machine applies load to the specimen through a steel needle at a loading speed of (4.2±0.8)N / s until the insertion depth of the steel needle reaches 13mm; the hardness curve of each measuring point of each specimen during the test is recorded (a force sensor is set on the steel needle), the maximum hardness of each measuring point is taken, and the average value of the maximum hardness of the five specimens is taken as the end hardness value of the group of specimens (accurate to 1N); when performing edge hardness measurement, the same principle can be used to obtain the average value of the maximum value of the ten specimens as the edge hardness value of the group of specimens (accurate to 1N).

[0003] However, currently, the thickness needs to be tested one by one at each point. Each group needs to measure 5 end hardness test pieces (3 measuring points for each test piece, a total of 15 measuring points), and 10 edge hardness test pieces (3 measuring points for each test piece, a total of 30 measuring points). It takes 3 to 4 minutes to complete the test at each measuring point. After a measuring point is completed, the position of the test piece needs to be adjusted, which takes a lot of time. In addition, during the test, the inspection personnel need to replace samples and operate equipment, which reduces work efficiency. Summary of the Invention

[0004] In view of the defects in the prior art, the present invention solves the technical problem of how to shorten the time required for the hardness test of paper-faced gypsum board.

[0005] To achieve the above objectives, in a first aspect, the present invention provides an automatic detection device for the hardness of gypsum board, comprising: A support assembly comprising a base and support columns, wherein support columns are provided at both ends of the top surface of the base; A fixing assembly is provided on the top surface of the base, and the fixing assembly includes a plurality of clamping members to realize the installation of a plurality of test pieces; The steel needle assembly includes multiple steel needles and force sensors. The force sensors are arranged on the steel needles, and the number of steel needles is the same as the number of clamping parts. The steel needles are used to be located directly above the center line of the thickness of the specimen. The steel needle assembly is movably arranged on the support column through the lifting assembly to enable the steel needles to approach or move away from the specimen.

[0006] By adopting the above technical solution, multiple specimens in a group are fixed to a base using clamps. Each specimen corresponds to a corresponding steel needle. The positions of the specimens and the steel needles are adjusted so that the steel needles are directly above the corresponding preset measuring points on the specimens. Finally, a lifting assembly is used to drive the steel needles into the specimens to a preset depth. During this process, a force sensor collects data and generates a hardness curve. After the test at the first preset measuring point is completed, the next preset measuring point is tested. Therefore, this automatic gypsum board hardness testing equipment shortens the time required for gypsum board hardness testing.

[0007] In combination with the first aspect, in one embodiment, the clamping member includes a clamping seat, a clamping plate, a first motor and a pressure sensor. The clamping seat is arranged on the base, and two clamping plates are arranged on the top surface of the clamping seat so as to be laterally movably. Pressure sensors are arranged on the opposite surfaces of the two clamping plates. The pressure sensor is used to detect the clamping force of the clamping member on the specimen, and the first motor is used to drive the two clamping plates to move closer to or away from each other.

[0008] By adopting the above technical solution, it is not only applicable to the clamping of samples of different thicknesses, but also ensures the stability of clamping; at the same time, the above design can realize automatic clamping of samples, thereby improving the automation performance of the testing equipment.

[0009] In one embodiment, the fixing assembly further includes a connecting rod and a second motor, a plurality of clamping seats are fixedly provided on the connecting rod, a longitudinal slide rail is provided on the top surface of the base, the connecting rod is movably provided on the longitudinal slide rail, and the second motor is used to drive the connecting rod to move longitudinally.

[0010] By adopting the above technical solution, multiple samples can be moved longitudinally, reducing the error caused by individual movement and improving the movement efficiency; at the same time, the automation performance of the detection equipment is further improved.

[0011] In one embodiment, the steel needle assembly also includes a crossbeam, a mounting seat, a transverse slide rail and a third motor. The crossbeam is movably arranged between two support columns through a lifting assembly. The steel needle is arranged on the mounting seat. The mounting seat is movably arranged on the transverse slide rail. The third motor is used to drive the mounting seat to move laterally.

[0012] By adopting the above technical solution, the mounting seat can move along the transverse slide rail, thereby driving the movement of the steel needle, and the transverse position of the steel needle can be fine-tuned to ensure that the steel needle is located directly above the center line of the specimen thickness; at the same time, when specimens of different thicknesses need to be tested, the position of the steel needle can also be adjusted through the above structure.

[0013] In one embodiment, a position sensor is provided on the mounting seat to enable the steel needle to move to the position directly above the center line of the thickness of the corresponding specimen by lateral movement of the mounting seat.

[0014] By adopting the above technical solution, it is further ensured that the steel needle is located directly above the center line of the sample thickness, and the automation performance of the detection equipment is further improved.

[0015] In one embodiment, a dust collection assembly is provided inside the base, and the dust collection assembly includes an outer shell, a collection container, and a dust collector. The outer shell is provided inside a placement slot opened inside the base, and the collection container and the dust collector are provided inside the outer shell. The collection container is funnel-shaped, and one end of the collection container is connected to the grid layer opened on the top surface of the base, and the other end of the collection container is connected to the dust collector, so that the dust generated during the test is collected into the collection container.

[0016] By adopting the above technical solution, a large amount of dust generated by the paper-faced gypsum board during the test process can be collected, avoiding adverse effects on the health of the test personnel.

[0017] In one embodiment, a drawer slide is provided on the inner wall of the placement groove, the shell is movably provided on the drawer slide, and one side of the shell is provided on the side of the base to enable the removal and insertion of the dust collection assembly.

[0018] By adopting the above technical solution, the shell can be drawn out through the drawer slide rail, so as to facilitate the removal and cleaning of the dust in the collection container.

[0019] In a second aspect, the present invention provides a method for automatically detecting the hardness of a gypsum board, comprising the following steps: Providing automatic testing equipment for the hardness of the gypsum board; Fix the test piece by means of a clamp; Adjust the steel needle to the position just above the center line of the corresponding specimen thickness; The connecting rod is driven by the second motor to move so that the first preset measuring point of the test piece is located directly below the steel needle; The steel needle is driven to approach the specimen by the lifting assembly until the depth of the steel needle inserted into the specimen reaches a preset depth; Collect hardness data through force sensor; The steel needle is driven away from the specimen by the lifting assembly until the steel needle is pulled out of the specimen, and the test of the first preset measuring point is completed; The connecting rod is driven by the second motor to move so that the second preset measuring point of the test piece is located directly below the steel needle. The above steps are repeated until the test of all preset measuring points is completed.

[0020] By adopting the above technical solution, multiple specimens in a group are fixed to a base using clamps. Each specimen corresponds to a corresponding steel needle. The positions of the specimens and the steel needles are adjusted so that the steel needles are directly above the corresponding preset measuring points of the specimens. Finally, a lifting assembly is used to drive the steel needles into the specimens to a preset depth. During this process, a force sensor collects data and a hardness curve is obtained. After the test at the first preset measuring point is completed, the next preset measuring point is tested. Therefore, this automatic gypsum board hardness testing equipment shortens the time required for gypsum board hardness testing. At the same time, the sensors and mechanical structure can be controlled by a controller during the test to improve automation performance.

[0021] In conjunction with the second aspect, in one embodiment, fixing the specimen by a clamping member specifically includes: Mark the pre-clamping position of the specimen; Identify the specimen by a marking identifier provided on the clamping piece so that the pre-clamping position of the specimen is located between the two clamping plates; The two clamping plates are driven by a first motor to move closer to each other along the clamping seat; Collect pressure data through pressure sensors; Determine whether the pressure data reaches the threshold; If the threshold is reached, the first motor stops working and the clamping and fixing are completed; otherwise, the first motor continues to drive the two clamping plates to move closer to each other along the clamping seat.

[0022] By adopting the above technical solution, it is not only applicable to the clamping of samples of different thicknesses, but also ensures the stability of clamping; at the same time, the above design can realize automatic clamping of samples, thereby improving the automation performance of the testing equipment.

[0023] In one embodiment, adjusting the steel needle to be directly above the center line of the corresponding specimen thickness specifically includes: The position data of the steel needle is collected by a position sensor, wherein the position data is the projected position of the steel needle on the specimen; The mounting base is driven by a third motor to move along the transverse slide rail until the steel needle is adjusted to be just above the center line of the corresponding specimen thickness.

[0024] By adopting the above technical solution, it is further ensured that the steel needle is located directly above the center line of the sample thickness, and the automation performance of the detection equipment is further improved.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects: 1. Multiple specimens in a group are fixed to the base using clamps. Each specimen corresponds to a steel needle. The positions of the specimens and the steel needles are adjusted so that the steel needles are directly above the preset measuring points of the corresponding specimens. Finally, the lifting assembly drives the steel needles into the specimens to the preset depth. During this process, the force sensor collects data and obtains a hardness curve. After the test at the first preset measuring point is completed, the next preset measuring point is tested. Therefore, this automatic gypsum board hardness testing equipment shortens the time required for gypsum board hardness testing. 2. The specific design of the clamping parts not only makes it suitable for clamping samples of different thicknesses, but also ensures the stability of the clamping. At the same time, the above design can realize automatic clamping of the sample, improving the automation performance of the testing equipment. 3. The specific design of the dust collection component not only collects the large amount of dust generated by the gypsum board during the test, avoiding adverse effects on the health of test personnel, but also the outer shell can be pulled out via drawer slides to facilitate the removal and cleaning of the dust in the collection container; 4. Through the design of the sensor and drive mechanism in the testing equipment, the paper-faced gypsum board hardness test can be automated. There is no need for testing personnel to change samples and operate equipment, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a first structural schematic diagram of the background technology of the present invention; Figure 2 A second structural diagram of the background technology of the present invention; Figure 3 This is a schematic structural diagram of an automatic detection device for the hardness of gypsum board according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of a fixing assembly according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a base according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a steel needle assembly according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a dust collection assembly according to an embodiment of the present invention.

[0027] In the figure: 1-edge hardness test piece, 2-end hardness test piece, 3-base, 4-support column, 401-vertical guide rail, 402-longitudinal slide rail, 403-grid layer, 5-top beam, 6-clamping piece, 601-clamping seat, 602-clamping plate, 603-connecting rod, 7-steel needle assembly, 701-steel needle, 702-cross beam, 703-cross slide rail, 704-mounting seat, 705-position sensor, 8-test piece, 9-dust collection assembly, 901-housing, 902-collection container, 903-vacuum cleaner. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0029] The automatic detection device for the hardness of the gypsum board in the embodiment of the present invention is shown in FIG. Figure 3 As shown, the automatic detection equipment for the hardness of gypsum board includes a support assembly, which includes a base 3 and a support column 4. Support columns 4 are provided at both ends of the top surface of the base 3, and a top beam 5 is provided on the top surface of the support column 4 to improve the stability of the support column 4; a fixing assembly, which is provided on the top surface of the base 3, and the fixing assembly includes a plurality of clamping members 6 to achieve the installation of multiple test pieces 8; a steel needle assembly 7, which includes a plurality of steel needles 701 and force sensors, the force sensors are provided on the steel needles 701, and the number of steel needles 701 is the same as the number of clamping members 6, the steel needles 701 are used to be located directly above the thickness center line of the test piece 8, and the steel needle assembly 7 is movably provided on the support column 4 through a lifting assembly to enable the steel needle 701 to approach or move away from the test piece 8.

[0030] It can be seen that the present invention installs a fixing component at a preset position on the base 3, and the multiple clamping members 6 of the fixing component fix the multiple samples in a group on the base 3 through the clamping members 6 respectively; each sample corresponds to a steel needle 701, and the positions of the sample and the steel needle 701 are adjusted so that the steel needle 701 is directly above the preset measuring point of the corresponding sample; finally, the steel needle 701 is driven to be inserted into the sample to a preset depth through the lifting component. During this process, the force sensor collects data and obtains a hardness curve; after the test is completed at the first preset measuring point, the steel needle 701 is pulled out of the sample, and the position of the steel needle 701 is adjusted to be directly above the next preset measuring point of the sample, and the next preset measuring point test is carried out. Therefore, the automatic detection equipment for the hardness of gypsum board shortens the time required for the gypsum board hardness test.

[0031] Preferably, see Figure 4 As shown, a specific structure of a clamping member 6 is provided: The clamping member 6 includes a clamping seat 601, a clamping plate 602, a first motor and a pressure sensor. The clamping seat 601 is arranged on the base 3. Two clamping plates 602 are arranged on the top surface of the clamping seat 601 so as to be laterally movable. Pressure sensors are arranged on the opposite surfaces of the two clamping plates 602. The pressure sensors are used to detect the clamping force of the clamping member 6 on the specimen 8. The first motor is used to drive the two clamping plates 602 to move closer to or away from each other.

[0032] Specifically, the clamping seat 601 is installed on the base 3, and two clamping plates 602 are provided on the top surface of the clamping seat 601. Both clamping plates 602 can be moved on the top surface of the clamping seat 601. The two clamping plates 602 can be placed in parallel or non-parallel, among which parallel is preferred to achieve a better clamping effect on the sample; one or both surfaces of the opposite surfaces of the two clamping plates 602 are provided with a pressure sensor, and when the two clamping plates 602 move towards each other, the pressure sensor will contact the surface of the sample and generate pressure, thereby detecting the clamping force of the clamping member 6 on the sample 8; the device for driving the two clamping plates 602 to move towards or away from each other is a first motor, and the first motor is electrically connected to the PLC controller to realize automatic control; therefore, the above design is not only suitable for clamping samples of different thicknesses, but also ensures the stability of clamping; at the same time, the above design can realize automatic clamping of the sample, thereby improving the automation performance of the detection equipment.

[0033] For further information, see Figure 4 、 5 As shown, the fixing assembly also includes a connecting rod 603 and a second motor. A plurality of clamping seats 601 are fixedly provided on the connecting rod 603. A longitudinal slide rail 402 is provided on the top surface of the base 3. The connecting rod 603 is movably provided on the longitudinal slide rail 402. The second motor is used to drive the connecting rod 603 to move longitudinally.

[0034] Specifically, the connecting rod 603 is set on the base 3, and a longitudinal slide rail 402 is set on the top surface of the base 3, so that the connecting rod 603 can move longitudinally on the base 3, and multiple clamping seats 601 are fixed on the connecting rod 603. The distance between two adjacent clamping seats 601 can be designed according to actual needs, or a structure convenient for installation is set between the clamping seat 601 and the connecting rod 603. The connecting rod 603 is driven by the second motor to move longitudinally, thereby driving the clamping member 6 to move longitudinally. When the measuring point needs to be located directly below the steel needle 701 or the next measuring point test needs to be carried out, the second motor can be used to make the multiple clamping members 6 move longitudinally synchronously, thereby driving multiple specimens to move synchronously, reducing the error caused by individual movements and improving the movement efficiency; at the same time, the second motor is electrically connected to the PLC controller, thereby further improving the automation performance of the detection equipment.

[0035] Preferably, see Figure 3 、 6 As shown, a specific structure of a steel needle assembly 7 is provided: The steel needle assembly 7 also includes a crossbeam 702, a mounting seat 704, a transverse slide rail 703 and a third motor. The crossbeam 702 is movably arranged between the two support columns 4 through a lifting assembly. The steel needle 701 is arranged on the mounting seat 704. The mounting seat 704 is movably arranged on the transverse slide rail 703. The third motor is used to drive the mounting seat 704 to move horizontally. The third motor is electrically connected to the PLC controller.

[0036] Specifically, the crossbeam 702 is movably arranged between the two support columns 4 through a lifting assembly, so that the crossbeam 702 can move along the design direction of the support columns 4. A transverse slide rail 703 is provided on the bottom surface of the crossbeam 702, and a plurality of mounting seats 704 are movably arranged on the transverse slide rail 703, so that the mounting seats 704 can move laterally. Since steel needles 701 are provided on the mounting seats 704, the steel needles 701 are driven to move laterally, and the transverse position of the steel needles 701 can be fine-tuned to ensure that the steel needles 701 are located directly above the center line of the sample thickness; at the same time, when samples of different thicknesses need to be tested, the position of the steel needles 701 can also be adjusted by the above structure.

[0037] Furthermore, the specific structure of the lifting assembly is that a vertical guide rail 401 is set on the support column 4, and the fourth motor controls the crossbeam 702 to move on the vertical guide rail 401, thereby driving the steel needle 701 to move upward or downward.

[0038] Furthermore, a position sensor 705 is provided on the mounting seat 704 to enable the steel needle 701 to move to the position directly above the thickness center line of the corresponding test piece 8 through the lateral movement of the mounting seat 704 .

[0039] Specifically, in order to further improve the accuracy of the steel needle 701 being located directly above the thickness center line of the specimen 8, a position sensor 705 is provided on each mounting seat 704. The position sensor 705 can monitor the projection position of each steel needle 701 on its corresponding specimen 8. The position sensor 705 is electrically connected to the PLC controller and can send the collected position data to the PLC controller. The PLC controller then controls the third motor to adjust the position of the steel needle 701, thereby further ensuring that the steel needle 701 is located directly above the thickness center line of the sample and further improving the automation performance of the detection equipment.

[0040] Preferably, see Figure 5 、 7As shown, a dust collection component 9 is provided inside the base 3, and the dust collection component 9 includes a shell 901, a collection container 902, and a dust collector 903. The shell 901 is arranged inside a placement slot opened inside the base 3, and the collection container 902 and the dust collector 903 are arranged inside the shell 901. The collection container 902 is funnel-shaped, and one end of the collection container 902 is connected to the grid layer 403 opened on the top surface of the base 3, and the other end of the collection container 902 is connected to the dust collector 903, so that the dust generated in the test is collected into the collection container 902; the dust collector 903 is electrically connected to the PLC controller.

[0041] Specifically, the top surface of the base 3 is set as a grid layer 403, and a placement groove is opened on the base 3 located at the bottom of the grid layer 403, and a dust collection component 9 for collecting dust is installed inside the placement groove. Before the steel needle 701 is inserted into the sample, the vacuum cleaner 903 needs to be turned on. The suction force generated by the vacuum cleaner 903 sucks the dust generated during the test from the grid layer 403 into the collection container 902 to collect the large amount of dust generated by the paper-faced gypsum board during the test, so as to avoid adverse effects on the health of the test personnel. At the same time, a closed shell can also be set on the periphery of the detection equipment, and a switchable protective door is provided on the closed shell to facilitate the test personnel to place the sample. This design can further prevent the leakage of dust.

[0042] Furthermore, a drawer slide is provided on the inner wall of the placement groove, and the shell 901 is movably provided on the drawer slide, and one side of the shell 901 is provided on the side of the base 3 to realize the removal and insertion of the dust collection component 9.

[0043] Specifically, since the collection container 902 and the dust collector 903 are both installed inside the shell 901, the shell 901 can be movably set on the drawer slide rail set on the inner wall of the placement slot. When a test is required, the shell 901 moves along the drawer slide rail to the inside of the placement slot to collect dust. When the test is completed, the shell 901 can be pulled out through the drawer slide rail to facilitate the removal and cleaning of the dust in the collection container 902; at the same time, when the generation and distribution of dust is more in certain areas, the shell 901 can also be moved along the drawer slide rail to adjust the position of the collection container 902 and the dust collector 903 inside the placement slot, so as to improve the collection in areas with more dust.

[0044] It should be noted that the above-mentioned mechanical structure driven to move by a motor may have rollers or other transmission structures arranged between the mechanical structures, and the motor drives the rollers to rotate to drive the movement of the mechanical structure; the slide rail may be a convex or concave structure.

[0045] The automatic detection method of the hardness of the gypsum board in the embodiment of the present invention comprises the following steps: Provide automatic testing equipment for the hardness of gypsum board; Fix the test piece 8 by the clamping member 6; Adjust the steel needle 701 to be just above the thickness centerline of the corresponding test piece 8; The connecting rod 603 is driven by the second motor to move so that the first preset measuring point of the test piece 8 is located directly below the steel needle 701; The steel needle 701 is driven to approach the specimen 8 by the lifting assembly until the depth of the steel needle 701 inserted into the specimen 8 reaches a preset depth (the prescribed standard is 13 mm). A displacement sensor is installed to detect the displacement distance of the steel needle 701, and the depth of the steel needle 701 inserted into the specimen is estimated based on the displacement distance and the initial position. Collect hardness data (test curve) through force sensor; The steel needle 701 is driven away from the test piece 8 by the lifting assembly until the steel needle 701 is pulled out of the test piece 8, and the first preset measuring point test is completed; The second motor drives the connecting rod 603 to move so that the second preset measuring point of the test piece 8 is located directly below the steel needle 701. The above steps are repeated until the test of all preset measuring points is completed.

[0046] It can be seen that the present invention installs a fixing component at a preset position on the base 3, and the multiple clamping members 6 of the fixing component fix the multiple samples in a group on the base 3 through the clamping members 6 respectively; each sample corresponds to a steel needle 701, and the positions of the sample and the steel needle 701 are adjusted so that the steel needle 701 is directly above the preset measuring point of the corresponding sample; finally, the steel needle 701 is driven to be inserted into the sample to a preset depth through the lifting component. During this process, the force sensor collects data and obtains a hardness curve; after the test is completed at the first preset measuring point, the steel needle 701 is pulled out of the sample, and the position of the steel needle 701 is adjusted to be directly above the next preset measuring point of the sample, and the next preset measuring point test is carried out. Therefore, the automatic detection equipment for the hardness of gypsum board shortens the time required for the gypsum board hardness test.

[0047] Preferably, the test piece 8 is fixed by the clamping member 6, specifically comprising: Mark the pre-clamping position of the test piece 8; The marking identifier provided on the clamping member 6 is used to identify the pre-clamping position of the test piece 8 so that the pre-clamping position is located between the two clamping plates 602; The two clamping plates 602 are driven by the first motor to move closer to each other along the clamping seat 601; Collect pressure data through pressure sensors; Determine whether the pressure data reaches the threshold; If the threshold is reached, the first motor stops working and the clamping and fixing are completed; otherwise, the first motor continues to drive the two clamping plates 602 to move closer to each other along the clamping seat 601.

[0048] Specifically, the clamping seat 601 is installed on the base 3, and two clamping plates 602 are provided on the top surface of the clamping seat 601. Both clamping plates 602 can be moved on the top surface of the clamping seat 601. The two clamping plates 602 can be placed in parallel or non-parallel, among which parallel is preferred to achieve a better clamping effect on the sample; one or both surfaces of the opposite surfaces of the two clamping plates 602 are provided with a pressure sensor, and when the two clamping plates 602 move towards each other, the pressure sensor will contact the surface of the sample and generate pressure, thereby detecting the clamping force of the clamping member 6 on the sample 8; the device for driving the two clamping plates 602 to move towards or away from each other is a first motor, and the first motor is electrically connected to the PLC controller to realize automatic control; therefore, the above design is not only suitable for clamping samples of different thicknesses, but also ensures the stability of clamping; at the same time, the above design can realize automatic clamping of the sample, thereby improving the automation performance of the detection equipment.

[0049] Preferably, adjusting the steel needle 701 to be directly above the thickness centerline of the corresponding test piece 8 specifically includes: The position data of the steel needle 701 is collected by the position sensor 705, wherein the position data is the projection position of the steel needle 701 on the test piece 8; The mounting base 704 is driven by a third motor to move along the transverse slide rail 703 until the steel needle 701 is adjusted to be directly above the thickness center line of the corresponding test piece 8.

[0050] Specifically, in order to further improve the accuracy of the steel needle 701 being located directly above the thickness center line of the specimen 8, a position sensor 705 is provided on each mounting seat 704. The position sensor 705 can monitor the projection position of each steel needle 701 on its corresponding specimen 8. The position sensor 705 is electrically connected to the PLC controller and can send the collected position data to the PLC controller. The PLC controller then controls the third motor to adjust the position of the steel needle 701, thereby further ensuring that the steel needle 701 is located directly above the thickness center line of the sample and further improving the automation performance of the detection equipment.

[0051] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. An automatic testing device for the hardness of gypsum board, characterized in that: It includes: A support assembly comprising a base (3) and a support column (4), wherein both ends of the top surface of the base (3) are provided with a support column (4); A fixing assembly is arranged on the top surface of the base (3), and the fixing assembly includes a plurality of clamping members (6) to enable the installation of a plurality of test pieces (8); A steel needle assembly (7) includes a plurality of steel needles (701) and a force sensor. The force sensor is arranged on the steel needle (701), and the number of the steel needles (701) is the same as the number of the clamping members (6). The steel needles (701) are used to be located directly above the thickness center line of the test piece (8). The steel needle assembly (7) is movably arranged on the support column (4) through a lifting assembly to enable the steel needles (701) to approach or move away from the test piece (8).

2. The automatic testing device for the hardness of gypsum board according to claim 1, characterized in that: The clamping member (6) includes a clamping seat (601), a clamping plate (602), a first motor and a pressure sensor. The clamping seat (601) is arranged on the base (3). Two clamping plates (602) are arranged on the top surface of the clamping seat (601) so as to be laterally movable. Pressure sensors are arranged on the opposite surfaces of the two clamping plates (602). The pressure sensors are used to detect the clamping force of the clamping member (6) on the test piece (8). The first motor is used to drive the two clamping plates (602) to move closer to or away from each other.

3. The automatic testing device for the hardness of gypsum board according to claim 2, characterized in that: The fixing assembly further comprises a connecting rod (603) and a second motor. A plurality of clamping seats (601) are fixedly provided on the connecting rod (603). A longitudinal slide rail (402) is provided on the top surface of the base (3). The connecting rod (603) is movably provided on the longitudinal slide rail (402). The second motor is used to drive the connecting rod (603) to move longitudinally.

4. The automatic testing device for the hardness of gypsum board according to claim 1, characterized in that: The steel needle assembly (7) further comprises a crossbeam (702), a mounting seat (704), a transverse slide rail (703) and a third motor, wherein the crossbeam (702) is movably arranged between the two support columns (4) via a lifting assembly, the steel needle (701) is arranged on the mounting seat (704), the mounting seat (704) is movably arranged on the transverse slide rail (703), and the third motor is used to drive the mounting seat (704) to move transversely.

5. The automatic testing device for the hardness of gypsum board according to claim 4, characterized in that: A position sensor (705) is provided on the mounting seat (704) to enable the steel needle (701) to move to the position directly above the thickness center line of the corresponding test piece (8) by means of lateral movement of the mounting seat (704).

6. The automatic testing device for the hardness of gypsum board according to claim 1, characterized in that: A dust collecting assembly (9) is provided inside the base (3), and the dust collecting assembly (9) includes a shell (901), a collecting container (902), and a dust collector (903). The shell (901) is provided inside a placement slot provided inside the base (3), and the collecting container (902) and the dust collector (903) are provided inside the shell (901). The collecting container (902) is funnel-shaped, and one end of the collecting container (902) is connected to a grid layer (403) provided on the top surface of the base (3), and the other end of the collecting container (902) is connected to the dust collector (903), so that the dust generated during the test is collected inside the collecting container (902).

7. The automatic testing device for the hardness of gypsum board according to claim 6, characterized in that: A drawer slide is provided on the inner wall of the placement slot, the shell (901) is movably provided on the drawer slide, and one side of the shell (901) is provided through the side of the base (3) to enable the removal and insertion of the dust collection assembly (9).

8. An automatic detection method for the hardness of gypsum board, characterized in that: The following steps are involved: Provide an automatic testing device for the hardness of gypsum board according to any one of claims 1 to 7; Fixing the test piece (8) by means of a clamping member (6); Adjust the steel needle (701) to be just above the thickness centerline of the corresponding test piece (8); The connecting rod (603) is driven to move by the second motor so that the first preset measuring point of the test piece (8) is located directly below the steel needle (701); The steel needle (701) is driven to approach the test piece (8) by the lifting assembly until the depth of the steel needle (701) inserted into the test piece (8) reaches a preset depth; Collect hardness data through force sensor; The steel needle (701) is driven away from the test piece (8) by the lifting assembly until the steel needle (701) is pulled out from the test piece (8), and the first preset measuring point test is completed; The second motor drives the connecting rod (603) to move so that the second preset measuring point of the test piece (8) is located directly below the steel needle (701), and the above steps are repeated until the test of all preset measuring points is completed.

9. The automatic detection method of the hardness of gypsum board according to claim 8, characterized in that: The test piece (8) is fixed by the clamping piece (6), specifically including: Mark the pre-clamping position of the test piece (8); Identify the pre-clamping position of the test piece (8) by using a marking identifier provided on the clamping piece (6) so that the pre-clamping position of the test piece (8) is located between the two clamping plates (602); The two clamping plates (602) are driven by a first motor to move closer to each other along the clamping seat (601); Collect pressure data through pressure sensors; Determine whether the pressure data reaches the threshold; If the threshold value is reached, the first motor stops working and the clamping and fixing are completed; otherwise, the first motor continues to drive the two clamping plates (602) to move closer to each other along the clamping seat (601).

10. The automatic detection method of the hardness of gypsum board according to claim 8, characterized in that: Adjust the steel needle (701) to be directly above the thickness center line of the corresponding test piece (8), specifically including: collecting position data of the steel needle (701) through a position sensor (705), wherein the position data is a projection position of the steel needle (701) on the test piece (8); The mounting base (704) is driven by a third motor to move along the transverse slide rail (703) until the steel needle (701) is adjusted to be directly above the thickness center line of the corresponding test piece (8).

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