Surface quality detection device for scratch-resistant and mildew-proof decorative panel

Abstract

The invention belongs to the technical field of panel quality detection, and particularly relates to a scratch-resistant and mildew-proof decoration panel surface quality detection device which comprises a fixing frame and a conveying belt arranged in the fixing frame, a U-shaped detection frame is fixedly arranged at the top of the fixing frame, the conveying belt penetrates through the interior of the U-shaped detection frame, and the scratch-resistant and mildew-proof decoration panel surface quality detection device further comprises a plurality of placing mechanisms, the placing mechanisms are uniformly distributed and fixedly arranged on the surface of the conveying belt, and are used for positioning and placing the decoration panels; the moving mechanism is arranged in the U-shaped detection frame, an electric push rod is fixedly arranged at the bottom of the moving end of the moving mechanism, and an anti-scraping detection mechanism is arranged at the lower end of the electric push rod; and the cleaning mechanism is arranged on one side of the electric push rod, and the cleaning mechanism is used for cleaning the decoration panel in the placing mechanism. Through multi-mechanism cooperation and automatic calibration design, integration of scratch-proof and mildew-proof performance of the decoration panel is achieved, automatic and accurate detection is achieved, and the consistency of the detection efficiency and detection of the same batch is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of panel quality testing technology, and in particular relates to a surface quality testing device for scratch-resistant and mildew-resistant decorative panels. Background Technology

[0002] In the manufacturing of electrical products, decorative panels are key components that are directly exposed to the external environment. Their surface scratch resistance and mildew resistance directly affect the product's appearance integrity, durability, and user experience. Therefore, related surface quality testing is one of the core processes in the production quality control process, such as the decorative panel surface quality testing device disclosed in announcement number CN217766115U.

[0003] Currently, for mildew resistance testing, the mildew resistance of decorative panels mainly depends on the mildew-resistant coating applied to the surface. The uniform distribution of this coating is a key factor in determining whether the mildew resistance meets the standards and whether it is stable and durable. Therefore, the core of mildew resistance testing lies in accurately determining the uniformity of the surface mildew-resistant coating. As for scratch resistance testing, the common method is to use a scraper to slide against the surface of the decorative panel, simulating the scenario of being scratched by hard objects in daily use to evaluate the panel's scratch resistance. However, in actual testing, the scraper, as the core component that directly contacts the panel, will naturally wear down with the increase of testing times. For example, the contact end of the scraper may wear, become blunt, or change shape. This wear will directly lead to a change in the contact state between the scraper and the surface of the decorative panel, resulting in the pressure between the two not being able to maintain a stable and uniform pressure. This causes the scratch force experienced by the same batch of decorative panels to vary, ultimately causing the scratch resistance test results to deviate from the actual situation, affecting the test accuracy, and making it difficult to accurately reflect the true scratch resistance performance of the decorative panel.

[0004] Therefore, a surface quality testing device for scratch-resistant and mildew-resistant decorative panels is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a surface quality testing device for scratch-resistant and mildew-resistant decorative panels.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a surface quality inspection device for scratch-resistant and mildew-resistant decorative panels, comprising a fixed frame and a conveyor belt disposed inside the fixed frame, wherein a U-shaped inspection frame is fixedly provided on the top of the fixed frame, and the conveyor belt passes through the interior of the U-shaped inspection frame, and further comprising:

[0007] Multiple placement mechanisms are evenly distributed and fixedly disposed on the surface of the conveyor belt, and the placement mechanisms are used to position and place the decorative panels.

[0008] A moving mechanism is located inside the U-shaped detection frame. An electric push rod is fixedly provided at the bottom of the moving end of the moving mechanism, and an anti-scratch detection mechanism is provided at the lower end of the electric push rod.

[0009] A cleaning mechanism is provided on one side of the electric push rod, and the cleaning mechanism is used to clean the decorative panel inside the placement mechanism;

[0010] The anti-mold detection mechanism is located on one side of the electric push rod, and the anti-mold detection mechanism is located between the cleaning mechanism and the electric push rod;

[0011] A scratch collection mechanism is disposed on the side wall of the electric push rod, and the scratch collection mechanism and the anti-mildew detection mechanism are distributed opposite to each other with respect to the electric push rod;

[0012] A calibration mechanism is installed on the inner wall of the U-shaped detection frame, and the calibration mechanism can calibrate the extrusion pressure at the detection end of the anti-scratch detection mechanism;

[0013] The PLC controller is fixedly mounted on the side wall of the mounting frame. The conveyor belt, moving mechanism, electric push rod, anti-scratch detection mechanism, anti-mildew detection mechanism, scratch collection mechanism, and calibration mechanism are all electrically connected to the PLC controller.

[0014] Preferably, the placement mechanism includes a placement bin fixedly disposed on the surface of the conveyor belt, the inner wall size of the placement bin matching the size of the decorative panel, lifting feet fixedly disposed at the four corners of the placement bin, and an outlet provided on both sides of the placement bin.

[0015] Preferably, the moving mechanism includes a motor fixedly mounted on the side wall of the U-shaped detection frame, a screw rotatably mounted inside the U-shaped detection frame, one end of the screw being fixedly connected to the output end of the motor, a screw seat threaded onto the wall of the screw, a limiting block fixedly mounted on the top of the screw seat, a limiting rod fixedly mounted inside the U-shaped detection frame and above the screw, the limiting block being slidably connected to the limiting rod, and an electric push rod fixedly mounted on the bottom of the screw seat.

[0016] Preferably, the anti-scratch detection mechanism includes a fixed plate fixedly mounted on the moving end of the electric push rod. Two sliding rods are symmetrically fixedly mounted on the bottom of the fixed plate. Sliding blocks are slidably mounted on the walls of the two sliding rods. Springs are sleeved on the walls of the two sliding rods. A fixed cylinder is fixedly mounted between the two sliding blocks. A scraper is provided inside the fixed cylinder. Bolts for fixing the scraper are threaded on the cylinder wall of the fixed cylinder.

[0017] Preferably, the cleaning mechanism includes a first fixed rod fixedly mounted on the side wall of the electric push rod, a U-shaped fixed plate fixedly mounted at the lower end of the first fixed rod, a cleaning roller brush rotatably mounted inside the U-shaped fixed plate, a gear fixedly mounted on a rotating shaft at one end of the cleaning roller brush, and a rack fixedly mounted inside the U-shaped detection frame, the rack meshing with the gear.

[0018] Preferably, the anti-mildew detection mechanism includes a second fixed rod fixedly mounted on the first fixed rod, and a near-infrared spectrometer is fixedly mounted on the lower end of the second fixed rod.

[0019] Preferably, the scratch collection mechanism includes a third fixed rod fixedly mounted on the side wall of the electric push rod, and a high-resolution camera is fixedly mounted on the lower end of the third fixed rod.

[0020] Preferably, the calibration mechanism includes a tray fixedly disposed on the inner wall of the U-shaped detection frame, the tray being located above the conveyor belt, two fixing rods being symmetrically fixedly disposed at the upper end of the tray, the upper ends of the two fixing rods being fixedly disposed on the same calibration plate, and a pressure sensor being fixedly embedded on the upper surface of the calibration plate.

[0021] Preferably, an infrared sensor is fixedly installed on the side of the tray away from the U-shaped detection frame, and a reflector is fixedly installed on one side of the placement compartment at a position corresponding to the infrared sensor.

[0022] Compared with existing technologies, the advantages of this invention are as follows:

[0023] 1. Through the set moving mechanism and cleaning mechanism, the moving mechanism can drive the cleaning mechanism to move smoothly. During the translation process, the cleaning mechanism achieves rotation by means of the meshing of gears and racks. Through the combined motion of rotation and translation, it can thoroughly clean the dust, debris and other impurities on the surface of the decorative panel, ensuring that the panel surface reaches the cleanliness required for testing, laying a solid foundation for subsequent accurate scratch and mildew prevention testing.

[0024] 2. By setting up a moving mechanism, a scratch-resistant detection mechanism, a mildew-resistant detection mechanism, and a scratch collection mechanism, the moving mechanism can drive the three to pass through the decorative panel in sequence. The mildew-resistant detection mechanism can determine the uniformity of the mildew-resistant coating on the panel surface. The scratch-resistant detection mechanism can simulate daily scratching scenarios to complete the scratch-resistant performance test. The scratch collection mechanism records the surface state after scratching in real time and provides feedback analysis. The four work together to achieve integrated and automated testing of scratch-resistant and mildew-resistant performance, greatly improving testing efficiency and the reliability of test results.

[0025] 3. Through the established calibration mechanism, after each test, during the device reset process, the anti-scratch detection mechanism will contact the pressure sensor of the calibration mechanism. The pressure sensor detects and feeds back the squeezing force data of the scraper. The PLC controller automatically adjusts the extension of the electric push rod according to the data to compensate for the pressure loss caused by the wear of the scraper. This ensures that the contact pressure between the scraper and the subsequent panel to be tested is always stable and consistent, effectively avoiding the impact of scraper wear on the detection accuracy and significantly improving the consistency and accuracy of the detection of the same batch of panels. Attached Figure Description

[0026] Figure 1 This is a perspective view of a surface quality testing device for scratch-resistant and mildew-resistant decorative panels provided by the present invention;

[0027] Figure 2 This is a three-dimensional view of the U-shaped inspection frame in a surface quality inspection device for scratch-resistant and mildew-resistant decorative panels provided by the present invention;

[0028] Figure 3 This is a perspective view of the placement mechanism in a surface quality testing device for scratch-resistant and mildew-resistant decorative panels provided by the present invention;

[0029] Figure 4 This is a perspective view of the scratch detection mechanism, scratch collection mechanism, and calibration mechanism in the scratch-resistant and mildew-resistant decorative panel surface quality testing device provided by the present invention;

[0030] Figure 5 This is a perspective view of the cleaning mechanism and the mildew detection mechanism in a surface quality testing device for scratch-resistant and mildew-resistant decorative panels provided by the present invention;

[0031] Figure 6 This is a perspective view of the connection between the infrared sensor and the reflector in a surface quality testing device for scratch-resistant and mildew-resistant decorative panels provided by the present invention.

[0032] In the diagram: 1. Fixed frame, 2. Conveyor belt, 3. U-shaped detection frame, 4. Placement mechanism, 41. Placement bin, 42. Lifting foot, 43. Outlet, 5. Moving mechanism, 51. Motor, 52. Screw, 53. Screw seat, 54. Limiting block, 55. Limiting rod, 6. Electric push rod, 7. Scratch-resistant detection mechanism, 71. Fixed plate, 72. Sliding rod, 73. Sliding block, 74. Spring, 75. Fixed cylinder, 76. Scraper, 77. Bolt, 8. Cleaning mechanism, 81. First fixed rod, 82. U-shaped fixed plate, 83. Cleaning roller brush, 84. Gear, 85. Rack, 9. Mildew-resistant detection mechanism, 91. Second fixed rod, 92. Near-infrared spectrometer, 10. Scratch collection mechanism, 101. Third fixed rod, 102. High-resolution camera, 11. Calibration mechanism, 111. Support plate, 112. Fixed rod, 113. Calibration plate, 114. Pressure sensor, 12. PLC controller, 13. Infrared sensor, 14. Reflector. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] like Figures 1-6 As shown, a surface quality inspection device for scratch-resistant and mildew-resistant decorative panels includes a fixed frame 1 and a conveyor belt 2 disposed inside the fixed frame 1. The fixed frame 1 has a conveyor roller for driving the conveyor belt 2, and also a tension roller (not shown) for adjusting the tension of the conveyor belt 2. A U-shaped inspection frame 3 is fixedly mounted on the top of the fixed frame 1, and the conveyor belt 2 passes through the interior of the U-shaped inspection frame 3. The device also includes:

[0035] Multiple placement mechanisms 4 are evenly distributed and fixedly installed on the surface of the conveyor belt 2, and the placement mechanism 4 is used to position and place the decorative panel. The placement mechanism 4 includes a placement chamber 41 fixedly installed on the surface of the conveyor belt 2. The inner wall size of the placement chamber 41 matches the size of the decorative panel. Lifting feet 42 are fixedly installed at the four corners of the placement chamber 41. Retrieval outlets 43 are opened on both sides of the placement chamber 41. When the decorative panel is placed into the placement chamber 41, the four lifting feet 42 can create a gap between the decorative panel and the bottom of the placement chamber 41. When it is necessary to remove the decorative panel, the operator puts their fingers into the retrieval outlets 43 and pinches the two sides of the decorative panel to remove it from the inside of the placement chamber 41.

[0036] A moving mechanism 5 is located inside the U-shaped inspection frame 3. An electric push rod 6 is fixedly mounted at the bottom of the moving end of the moving mechanism 5. The moving mechanism 5 includes a motor 51 fixedly mounted on the side wall of the U-shaped inspection frame 3. A screw 52 is rotatably mounted inside the U-shaped inspection frame 3. One end of the screw 52 is fixedly connected to the output end of the motor 51. A screw seat 53 is threaded onto the wall of the screw 52. A limiting block 54 is fixedly mounted on the top of the screw seat 53. A limiting rod 55 is fixedly mounted inside the U-shaped inspection frame 3 and above the screw 52. The limiting block 54 and the limiting rod 55 are slidably connected. The electric push rod 6 is fixedly mounted at the bottom of the screw seat 53. The operation of the motor 51 drives the screw 52 to rotate at a uniform speed. Because the screw seat 53 and the screw 52 are threadedly fitted, the rotation of the screw 52 can drive the screw seat 53 to move. At the same time, the limiting block 54 and the limiting rod 55 are slidably connected. The limiting position of the positioning rod 55 ensures that the screw seat 53 moves smoothly inside the U-shaped detection frame 3; the lower end of the electric push rod 6 is provided with an anti-scratch detection mechanism 7; the anti-scratch detection mechanism 7 includes a fixed plate 71 fixedly mounted on the moving end of the electric push rod 6, two sliding rods 72 are symmetrically fixed at the bottom of the fixed plate 71, sliding blocks 73 are slidably mounted on the rod walls of the two sliding rods 72, springs 74 are sleeved on the rod walls of the two sliding rods 72, a fixed cylinder 75 is fixed between the two sliding blocks 73, a scraper 76 is provided inside the fixed cylinder 75, the lower end of the scraper 76 adopts a pointed structure, the cylinder wall of the fixed cylinder 75 is threaded with bolts 77 to fix the scraper 76, if the scraper 76 is worn too much and needs to be replaced, the bolts 77 are loosened with a wrench, the scraper 76 is taken out from the inside of the fixed cylinder 75, and a new scraper 76 is installed.

[0037] The cleaning mechanism 8 is located on one side of the electric push rod 6 and is used to clean the decorative panel inside the placement mechanism 4. The cleaning mechanism 8 includes a first fixing rod 81 fixedly mounted on the side wall of the electric push rod 6. The first fixing rod 81 has an L-shaped structure, and a U-shaped fixing plate 82 is fixedly mounted at the lower end of the first fixing rod 81. A cleaning roller brush 83 is rotatably mounted inside the U-shaped fixing plate 82. A gear 84 is fixedly mounted on the rotating shaft at one end of the cleaning roller brush 83. A rack 85 is fixedly mounted inside the U-shaped detection frame 3. The rack 85 meshes with the gear 84. The cleaning roller brush 83 is made of a high-density microfiber and nylon blend material. The microfiber bundles have strong adsorption force and can efficiently clean the micro dust and debris on the panel surface without generating secondary dust. The anti-static treatment can prevent dust from being adsorbed and remaining due to static electricity. The nylon wire skeleton ensures the structural stability of the cleaning roller brush 83 when it rotates. It is wear-resistant and not easily deformed. At the same time, the material has moderate softness and will not scratch the surface of the decorative panel or wear the anti-mildew coating, which fully meets the core requirements of cleaning before detection.

[0038] The anti-mold detection mechanism 9 is located on one side of the electric push rod 6 and between the cleaning mechanism 8 and the electric push rod 6. The anti-mold detection mechanism 9 includes a second fixed rod 91 fixedly mounted on the first fixed rod 81. The lower end of the second fixed rod 91 is fixedly equipped with a near-infrared spectrometer 92, which is a MicroNIR-1700.

[0039] The scratch collection mechanism 10 is set on the side wall of the electric push rod 6, and the scratch collection mechanism 10 and the mildew detection mechanism 9 are distributed opposite to each other with respect to the electric push rod 6. The scratch collection mechanism 10 includes a third fixing rod 101 fixedly set on the side wall of the electric push rod 6. The third fixing rod 101 has an L-shaped structure. A high-resolution camera 102 is fixedly installed at the lower end of the third fixing rod 101. The high-resolution camera 102 is a Basler acA2500-14uc high-resolution industrial camera. The high-resolution camera 102 can photograph the surface of the decorative panel after it has been scratched.

[0040] The calibration mechanism 11 is located on the inner wall of the U-shaped detection frame 3, and can calibrate the extrusion pressure at the detection end of the anti-scratch detection mechanism 7. The calibration mechanism 11 includes a support plate 111 fixedly mounted on the inner wall of the U-shaped detection frame 3, the support plate 111 being located above the conveyor belt 2. Two fixing rods 112 are symmetrically fixed at the end of the upper surface of the support plate 111, and the same calibration plate 113 is fixedly mounted at the upper end of the two fixing rods 112. A pressure sensor 114 is fixedly embedded on the upper surface of the calibration plate 113. The surface of the calibration plate 113 and the outer surface of the housing of the pressure sensor 114 are both treated with a smooth process to reduce wear on the scraper rod 76. An infrared sensor 13 is fixedly installed on the side of the pallet 111 away from the U-shaped detection frame 3. A reflector 14 is fixedly installed on one side of the placement chamber 41 at a position corresponding to the infrared sensor 13. As the placement chamber 41 moves along the conveyor belt 2, the reflector 14 aligns with the infrared sensor 13. The emitting end of the infrared sensor 13 emits an infrared beam. When the reflector 14 moves into the detection range of the infrared sensor 13, the infrared beam is reflected by the reflector 14 and captured by the receiving end of the infrared sensor 13. The precise position of the reflector 14 is identified by the change in the beam reflection state, thereby detecting the position of the placement chamber 41.

[0041] The PLC controller 12 is fixedly mounted on the side wall of the mounting frame 1. The conveyor belt 2, the moving mechanism 5, the electric push rod 6, the anti-scratch detection mechanism 7, the anti-mildew detection mechanism 9, the scratch collection mechanism 10, and the calibration mechanism 11 are all electrically connected to the PLC controller 12.

[0042] The operating principle of this invention is described as follows: First, the worker smoothly places the decorative panel inside the placement chamber 41. Then, the worker sends a start command to the conveyor belt 2 via the PLC controller 12. The conveyor belt 2 then rotates, driving multiple placement chambers 41 loaded with decorative panels to move sequentially towards the U-shaped detection frame 3. When the placement chamber 41 enters the designated area inside the U-shaped detection frame 3, the reflector 14 installed on the side wall of the placement chamber 41 will form a corresponding detection relationship with the infrared sensor 13 installed on one side of the tray 111. The emitting end of the infrared sensor 13 emits an infrared beam. When the reflector 14 moves into the detection range of the infrared sensor 13, the infrared light... The external light beam is reflected by the reflector 14 and captured by the receiver of the infrared sensor 13. The precise position of the reflector 14 is identified by the change in the reflection state of the light beam. The infrared sensor 13 converts the position identification signal into an electrical signal and feeds it back to the PLC controller 12. After receiving the signal, the PLC controller 12 immediately triggers the conveyor belt 2 to brake, realizing the precise positioning of the placement chamber 41. At this time, the decorative panel inside the placement chamber 41 and the cleaning roller brush 83, near-infrared spectrometer 92, scraper 76 and high-resolution camera 102 mounted on the U-shaped detection frame 3 are exactly on the same horizontal baseline, providing a basic guarantee for the precision control of subsequent anti-scratch and anti-mildew detection.

[0043] After positioning is completed, PLC controller 12 sends a running command to drive motor 51. After motor 51 starts, it drives screw 52 to rotate at a constant speed. Since screw seat 53 and screw 52 are threadedly matched, the rotational motion of screw 52 is converted into the smooth movement of screw seat 53 inside U-shaped detection frame 3. At the same time, electric push rod 6 moves synchronously with screw seat 53, thereby driving the cleaning roller brush 83, near-infrared spectrometer 92, scraper 76 and high-resolution camera 102 installed on electric push rod 6 to pass through the positioning chamber 41 and its internal decorative panel in sequence.

[0044] When the cleaning roller brush 83 moves above the decorative panel, it forms a close contact with the surface of the decorative panel. At the same time, as the electric push rod 6 drives the cleaning roller brush 83 to move horizontally, the gear 84 at one end of the cleaning roller brush 83 meshes with the rack 85 set on the inner side of the U-shaped detection frame 3. The fixed tooth structure of the rack 85 forces the gear 84 to rotate synchronously with the horizontal movement, thereby driving the cleaning roller brush 83 to rotate. The combined motion of rotation and horizontal movement allows the cleaning roller brush 83 to fully contact the surface of the decorative panel, sweeping the attached dust, debris and other impurities to one side in a directional manner, ensuring that the surface of the decorative panel meets the cleanliness requirements required for the test.

[0045] During the cleaning process, the near-infrared spectrometer 92 moves synchronously with the electric push rod 6 to the top of the decorative panel. The near-infrared spectrometer 92 emits near-infrared light of a specific wavelength. After the beam of light shines on the anti-mildew coating on the surface of the decorative panel, the anti-mildew components in the coating will have characteristic absorption, reflection or transmission effects on near-infrared light of different wavelengths. The spectrometer captures the characteristic spectral information corresponding to the anti-mildew components by detecting the spectral signals of the reflected / transmitted light. The near-infrared spectrometer 92 transmits the collected spectral data to the PLC controller 12 in real time. The analysis algorithm built into the PLC controller 12 determines the distribution state of the anti-mildew coating on the surface of the decorative panel by comparing parameters such as the intensity distribution and peak position of the characteristic spectrum, thereby completing the qualitative analysis and judgment of the uniformity of the anti-mildew coating.

[0046] In the scratch resistance test conducted concurrently with the anti-mildew coating uniformity test, the scraper 76 moves synchronously with the electric push rod 6. During the movement, the scraper 76 first contacts one side of the wall of the placement chamber 41. Under this external pressure, the fixed cylinder 75 connected to the upper end of the scraper 76 slides along the sliding rod 72 via the sliding blocks 73 mounted on both sides. At the same time, the sliding blocks 73 compress the spring 74 at the top, causing the scraper 76 to move to the top of the placement chamber 41. As the electric push rod 6 continues to move, until the scraper 76... The lower end of the scraper 76 is precisely fitted to the surface of the interior decorative panel of the placement compartment 41. Subsequently, the scraper 76 continues to move with the translation of the electric push rod 6, forming a stable sliding scrape on the surface of the decorative panel to complete the scratch resistance test. During this process, the compressed spring 74 always maintains the elastic return tendency and continuously applies a downward elastic force to the sliding block 73. With the help of the transmission of this elastic force, the contact pressure between the lower end of the scraper 76 and the surface of the decorative panel is kept constant, effectively avoiding the impact of contact pressure fluctuations on the accuracy of the scratch resistance test.

[0047] During the simultaneous anti-scratch inspection process, the high-resolution camera 102 moves synchronously with the electric push rod 6. As the scraper rod 76 swipes across the panel surface and completes the scraping action, the high-resolution camera 102 continuously takes high-definition pictures of the surface of the decorative panel after the scratch, fully recording the details of the changes in the appearance of the decorative panel surface after the scratch. The captured image data is transmitted to the PLC controller 12 in real time. The image processing algorithm built into the PLC controller 12 performs grayscale comparison, edge recognition and feature extraction on the image to accurately determine whether scratches have occurred on the surface of the decorative panel. At the same time, it further analyzes the distribution of scratches and the actual degree of damage. Once the size of the scratch is detected, the PLC controller 12 will immediately trigger the built-in alarm and issue a warning signal so that the staff can deal with the defective products in time.

[0048] After the anti-scratch and anti-mildew test is completed, the cleaning roller brush 83, near-infrared spectrometer 92, scraper 76 and high-resolution camera 102 are moved to the other side of the placement chamber 41 by the electric push rod 6. At this time, the PLC controller 12 stops the operation of the motor 51 and starts the conveyor belt 2. The conveyor belt 2 moves the decorative panel inside the placement chamber 41 after the test out from the inside of the U-shaped test frame 3. During this process, the PLC controller 12 starts the motor 51 in reverse. The motor 51 rotates in reverse and drives the screw 52 to rotate in reverse, so that the screw seat 53 and the electric push rod 6, cleaning roller brush 83, near-infrared spectrometer 92, scraper 76 and high-resolution camera 102 at the bottom are reset.

[0049] When entering the reset process, the scraper 76 moves back with the electric push rod 6 and the screw seat 53. During the process, it comes into contact with the calibration plate 113 set on the support plate 111. Under the pressure of the calibration plate 113, the scraper 76 is lifted upward and the sliding blocks 73 on both sides of the fixed cylinder 75 slide along the sliding rod 72 until the lower end of the scraper 76 is in contact with the detection end of the pressure sensor 114 on the upper surface of the calibration plate 113. At this time, the pressure sensor 114 can detect the pressure applied by the scraper 76 in real time, thereby indirectly reflecting the magnitude of the force when the scraper 76 contacts the decorative panel to be tested. Since the installation height of the pressure sensor 114 is consistent with the surface height of the decorative panel inside the placement compartment 41, the force reference of the two is completely matched. Subsequently, the pressure sensor 114 transmits the collected pressure data to the PLC controller 12 in real time. After receiving the data, the PLC controller 12 immediately controls the drive motor 51 to stop running, completing the pressure calibration step of the reset stage.

[0050] The wear level of the scraper 76 can be accurately determined by the pressure test results. If the scraper 76 shows significant wear due to long-term use, the force it experiences when in contact with the pressure sensor 114 will decrease, causing the pressure value detected by the pressure sensor 114 to be lower than the preset range. In this case, the PLC controller 12 will automatically calculate and adjust the extension of the electric push rod 6 according to the attenuation of the pressure value, and control the electric push rod 6 to extend downwards, driving the scraper 76 to move downwards synchronously. This increases the squeezing force between the lower end of the scraper 76 and the detection end of the pressure sensor 114. By increasing the downward movement distance of the scraper 76, the pressure loss caused by the wear of the scraper 76 itself is offset, so that the squeezing force between the scraper 76 and the pressure sensor 114 remains stable within the preset range. This ensures that the force exerted by the scraper 76 when in contact with the surface of each decorative panel is consistent during subsequent testing, so that the scraping force experienced by the same batch of decorative panels is exactly the same, greatly improving the accuracy and consistency of anti-scratch testing.

[0051] Once the pressure calibration is complete, the device returns to its initial testing state. When the subsequent placement bins 41 on the surface of the conveyor belt 2 enter the U-shaped testing frame 3 in sequence, the above testing process can be repeated to carry out efficient and accurate anti-scratch and anti-mildew surface quality testing on the next batch of decorative panels.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A surface quality testing device for scratch-resistant and mildew-resistant decorative panels, comprising a fixed frame (1) and a conveyor belt (2) disposed inside the fixed frame (1), wherein a U-shaped testing frame (3) is fixedly provided on the top of the fixed frame (1), and the conveyor belt (2) passes through the interior of the U-shaped testing frame (3), characterized in that, Also includes: Multiple placement mechanisms (4) are evenly distributed and fixedly disposed on the surface of the conveyor belt (2), and the placement mechanism (4) is used to position and place the decorative panel; The moving mechanism (5) is located inside the U-shaped detection frame (3). The bottom of the moving end of the moving mechanism (5) is fixedly provided with an electric push rod (6), and the lower end of the electric push rod (6) is provided with an anti-scratch detection mechanism (7). A cleaning mechanism (8) is provided on one side of the electric push rod (6), and the cleaning mechanism (8) is used to clean the decorative panel inside the placement mechanism (4); The anti-mold detection mechanism (9) is located on one side of the electric push rod (6), and the anti-mold detection mechanism (9) is located between the cleaning mechanism (8) and the electric push rod (6); The scratch collection mechanism (10) is located on the side wall of the electric push rod (6), and the scratch collection mechanism (10) and the anti-mildew detection mechanism (9) are distributed opposite to each other with respect to the electric push rod (6); The calibration mechanism (11) is located on the inner wall of the U-shaped detection frame (3), and the calibration mechanism (11) can calibrate the extrusion pressure at the detection end of the anti-scratch detection mechanism (7); The PLC controller (12) is fixedly installed on the side wall of the fixed frame (1). The conveyor belt (2), the moving mechanism (5), the electric push rod (6), the anti-scratch detection mechanism (7), the anti-mildew detection mechanism (9), the scratch collection mechanism (10), and the calibration mechanism (11) are all electrically connected to the PLC controller (12).

2. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 1, characterized in that, The placement mechanism (4) includes a placement chamber (41) fixedly disposed on the surface of the conveyor belt (2). The inner wall size of the placement chamber (41) matches the size of the decorative panel. Lifting feet (42) are fixedly provided at the four corners of the interior of the placement chamber (41). Outlets (43) are opened on both sides of the placement chamber (41).

3. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 1, characterized in that, The moving mechanism (5) includes a motor (51) fixedly mounted on the side wall of the U-shaped detection frame (3). A screw (52) is rotatably mounted inside the U-shaped detection frame (3). One end of the screw (52) is fixedly connected to the output end of the motor (51). A screw seat (53) is threaded on the wall of the screw (52). A limiting block (54) is fixedly mounted on the top of the screw seat (53). A limiting rod (55) is fixedly mounted inside the U-shaped detection frame (3) and above the screw (52). The limiting block (54) is slidably connected to the limiting rod (55). An electric push rod (6) is fixedly mounted on the bottom of the screw seat (53).

4. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 1, characterized in that, The anti-scratch detection mechanism (7) includes a fixed plate (71) fixedly mounted on the moving end of the electric push rod (6). Two sliding rods (72) are symmetrically fixedly mounted on the bottom of the fixed plate (71). Sliding blocks (73) are slidably mounted on the rod walls of the two sliding rods (72). Springs (74) are sleeved on the rod walls of the two sliding rods (72). A fixed cylinder (75) is fixedly mounted between the two sliding blocks (73). A scraper rod (76) is provided inside the fixed cylinder (75). Bolts (77) for fixing the scraper rod (76) are threaded on the cylinder wall of the fixed cylinder (75).

5. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 1, characterized in that, The cleaning mechanism (8) includes a first fixed rod (81) fixedly mounted on the side wall of the electric push rod (6). A U-shaped fixed plate (82) is fixedly mounted at the lower end of the first fixed rod (81). A cleaning roller brush (83) is rotatably mounted inside the U-shaped fixed plate (82). A gear (84) is fixedly mounted on the rotating shaft at one end of the cleaning roller brush (83). A rack (85) is fixedly mounted inside the U-shaped detection frame (3). The rack (85) meshes with the gear (84).

6. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 5, characterized in that, The anti-mildew detection mechanism (9) includes a second fixed rod (91) fixedly mounted on the first fixed rod (81), and a near-infrared spectrometer (92) is fixedly mounted on the lower end of the second fixed rod (91).

7. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 1, characterized in that, The scratch collection mechanism (10) includes a third fixed rod (101) fixedly mounted on the side wall of the electric push rod (6), and a high-resolution camera (102) is fixedly mounted on the lower end of the third fixed rod (101).

8. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 2, characterized in that, The calibration mechanism (11) includes a tray (111) fixedly installed on the inner wall of the U-shaped detection frame (3). The tray (111) is located above the conveyor belt (2). Two fixing rods (112) are symmetrically fixed at the end of the upper surface of the tray (111). The same calibration plate (113) is fixedly installed at the upper end of the two fixing rods (112). A pressure sensor (114) is fixedly embedded on the upper surface of the calibration plate (113).

9. The surface quality testing device for scratch-resistant and mildew-resistant decorative panels according to claim 8, characterized in that, An infrared sensor (13) is fixedly provided on the side of the pallet (111) away from the U-shaped detection frame (3), and a reflector (14) is fixedly provided on one side of the placement compartment (41) at the position corresponding to the infrared sensor (13).

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