Thermosetting powder coating quality testing equipment and testing method

Abstract

The invention relates to the technical field of thermosetting powder coating testing, and discloses thermosetting powder coating quality testing equipment and a thermosetting powder coating quality testing method.The thermosetting powder coating quality testing equipment comprises a workbench, and the top of the workbench is provided with a mold frame through a moving assembly; clamping grooves for mounting the wood plate, the plastic plate and the metal plate which are coated with the thermosetting powder coating are formed in the mold frame, and three lifting assemblies which are distributed in sequence are arranged at the top of the workbench. Through cooperative use of the adhesive force detection assembly, the hardness detection assembly and the flexibility detection assembly, surface bonding quality testing of the thermosetting powder coating and different base materials is achieved, and the equipment integration degree is high; the mold frame can be accurately switched among an adhesive force detection station, a hardness detection station and a flexibility detection station through the moving assembly, the automation degree is high, and the test process is optimized by simultaneously detecting thermosetting powder coatings sprayed on a wood plate, a plastic plate and a metal plate respectively.

Description

Technical Field

[0001] The present invention relates to the technical field of thermosetting powder coating testing, in particular to a thermosetting powder coating quality testing device and a testing method. Background Art

[0002] Thermosetting powder coatings are widely used in the field of industrial coatings due to their advantages such as environmental friendliness, high adhesion and chemical corrosion resistance. One of the more important processes in the processing of thermosetting powder coatings is the quality inspection of thermosetting powder coatings. Since thermosetting powder coatings can be sprayed on different substrate surfaces, it is particularly important to classify and test the quality of thermosetting powder coatings sprayed on different substrate surfaces.

[0003] After searching, a Chinese patent with publication number CN222545166U discloses a coating impact testing device to solve the problem of impact testing of thermosetting powder coatings.

[0004] However, there are still several problems in the testing of existing thermosetting powder coatings:

[0005] 1. Since the adhesion of thermosetting powder coatings applied to different substrates varies, such as wood, plastic, and metal, targeted testing of different substrates is required to meet the quality standards required for thermosetting powder coatings in different fields.

[0006] 2. Existing thermosetting powder coating adhesion quality tests often only use a single impact test, which cannot fully evaluate the comprehensive performance of thermosetting powder coatings under mechanical stress after being combined with different substrates, such as the collaborative deformation ability and crack resistance of thermosetting powder coatings and substrates. The detection range is limited and cannot provide higher data support for the product.

[0007] 3. During testing, not only multiple methods are required for quality testing, but also different substrates need to be tested separately, which results in a lot of equipment required for testing and a cumbersome testing process. Therefore, how to solve the problem of equipment integration and optimize the testing process are also urgent issues that need to be solved. Summary of the Invention

[0008] In response to the shortcomings of the existing technology, the present invention provides a thermosetting powder coating quality testing equipment and testing method, which is mainly used to solve the problem that the adhesion degree of thermosetting powder coatings sprayed on different substrates is different, such as wood boards, plastic boards and metal boards. Therefore, targeted testing of different substrates is required to meet the quality standard requirements of thermosetting powder coatings applied to different fields. The existing thermosetting powder coating adhesion quality test often only uses a single impact test, which cannot comprehensively evaluate the comprehensive performance of thermosetting powder coatings under mechanical stress after being combined with different substrates, such as the collaborative deformation ability and crack resistance of thermosetting powder coatings and substrates. The detection range is limited and cannot provide higher data support for the product. Not only does it need to adopt multiple methods for quality testing, but it also needs to test different substrates separately, resulting in a lot of equipment required for testing and a cumbersome testing process. Therefore, how to solve the equipment integration problem and optimize the testing process are also urgent problems that need to be solved.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A thermosetting powder coating quality testing device includes a workbench, the top of the workbench is provided with a mold frame through a shifting assembly, the interior of the mold frame is provided with a slot for installing wooden boards, plastic boards and metal boards sprayed with thermosetting powder coating, the top of the workbench is provided with three groups of lifting assemblies distributed in sequence, the three groups of lifting assemblies are respectively provided with an adhesion detection assembly, a hardness detection assembly and a flexibility detection assembly for testing different substrates sprayed with thermosetting powder coating set inside the mold frame, the shifting assembly includes a horizontal shifting mechanism and a longitudinal shifting mechanism for switching different workstations of the mold frame, and one side of the three groups of lifting assemblies is provided with a visual detection assembly for detecting different substrates sprayed with thermosetting powder coating.

[0011] Furthermore, the lifting assembly includes four vertical poles fixedly connected to the top of the workbench, a top plate is fixedly connected between the top ends of the four vertical poles, lifting rods are inserted at the four corners of the top plate, a lifting plate is fixedly connected between the bottom ends of the four lifting rods, and a lifting cylinder is provided on the top of the top plate to drive the lifting plate and move it in the vertical direction through the lifting rods. The visual detection assembly includes a side mounting frame fixedly connected to one side of the top plate, and a CCD camera is fixedly connected to one end of the side mounting frame.

[0012] On the basis of the above-mentioned scheme, the adhesion detection assembly includes two adhesion detection support frames fixedly connected to the top of the workbench to support the mold frame, the bottom of the lifting plate located at the adhesion detection station is fixedly connected to two mounting rods, and a left and right movable slide is slidably connected between the two mounting rods. The interior of the left and right movable slide is rotatably connected to a rotating shaft through a bearing, and the bottom of the rotating shaft is fixedly connected to three scraping claws corresponding to the wooden board, plastic board and metal board. Both ends of the rotating shaft are fixedly connected to a rocker arm, and both sides of the left and right movable slide are fixedly connected to a pull rope, and one end of the pull rope passes through the rocker arm and is bolted to a pull plate, and a pressure spring is provided between the pull plate and the rocker arm, and the bottom of the lifting plate is provided with a reciprocating drive mechanism for driving the left and right movable slide to move left and right.

[0013] As a further solution of the present invention, the reciprocating drive mechanism includes a driven slide fixedly connected to the top of the left and right moving slides, a slide groove is opened inside the driven slide, the top of the lifting plate is fixedly connected to a rotary drive motor, one end of the output shaft of the rotary drive motor passes through the lifting plate and is fixedly connected to a turntable, the bottom end of the turntable is fixedly connected to a shift rod, and the shift rod is inserted into the slide groove.

[0014] Furthermore, the hardness detection component includes two hardness detection support frames fixedly connected to the top of the workbench to support the mold frame, the bottom of the lifting plate located at the hardness detection station is provided with a side pressure mechanism for pressing the wooden board, plastic board and metal board arranged inside the mold frame, the four corners of the bottom of the lifting plate are fixedly connected with connecting springs, a vibration frame is fixedly connected between the bottom ends of the four connecting springs, the bottom of the vibration frame is fixedly connected with a plurality of knocking balls corresponding to the wooden board, plastic board and metal board, two groups of vibration motors are fixedly connected to the inside of the vibration frame, and the bottom of the vibration frame is provided with a bending mechanism for pressing the wooden board, plastic board and metal board.

[0015] Based on the above scheme, the side pressure mechanism includes two side pressure frames inserted at the bottom of the lifting plate, and side pressure springs are provided between the two side pressure frames and the lifting plate. A plurality of mounting grooves are provided at the bottom of the side pressure frames, and rollers are rotatably connected in the mounting grooves.

[0016] As a further solution of the present invention, the bending mechanism includes three groups of pressing cylinders fixedly connected to the inside of the vibration frame, one end of the piston rod of the pressing cylinder passes through the vibration frame and is fixedly connected to a pressing mold knife, and the three groups of pressing mold knives correspond to the wooden board, plastic board and metal board respectively.

[0017] Furthermore, the flexibility detection assembly includes two support plates fixedly connected to the top of the workbench, the top of the support plate is fixedly connected to a supporting guide rail, and a slide 1 and a slide 2 are slidably connected between the two support rails through a slide, and the tops of the slide 1 and the slide 2 are provided with a fixed clamping frame and a screwing clamping frame for clamping wooden boards, plastic boards and metal boards respectively, and the screwing clamping frame is rotatably connected to one side of the slide 1 and the slide 2 by a screwing shaft, and the fixed clamping frame and the screwing clamping frame on the same side are staggered, and one side of the slide 1 and the slide 2 is provided with a screwing motor that drives the screwing clamping frame to rotate along the axial direction, one side of the screwing shaft is fixedly connected to a pointer, and one side of the slide 1 and the slide 2 is provided with a screwing motor that drives the screwing clamping frame to rotate along the axial direction, The top of the workbench is rotatably connected to a bidirectional threaded rod through a bearing seat, and the bidirectional threaded rod is threadedly connected to slide one and slide two through threaded sleeves respectively. The top of the workbench is provided with a bidirectional drive motor that drives the bidirectional threaded rod to rotate along the axial direction. The bottom of the lifting plate located at the flexibility detection station is plugged with an upper pressure frame for pressing the wooden board, plastic board and metal plate arranged inside the mold frame. A plurality of upper pressure springs are provided between the upper pressure frame and the lifting plate. Four groups of telescopic rods are fixedly connected to the top of the workbench, and a lower top frame cooperating with the upper pressure frame is fixedly connected between the top ends of the four groups of telescopic rods. The top of the workbench is provided with two groups of lifting cylinders that drive the lower top frame to move in the vertical direction.

[0018] On the basis of the above-mentioned scheme, the lateral movement mechanism includes two lateral guide rails fixedly connected to the top of the workbench, and a lateral movement frame is slidably connected between the two lateral guide rails through a slide. The top of the workbench is rotatably connected to a one-way threaded rod through a bearing seat, and the one-way threaded rod is threadedly connected to the lateral movement frame through a threaded sleeve. The top of the workbench is provided with a lateral movement drive motor that drives the one-way threaded rod to rotate along the axial direction. The longitudinal movement mechanism includes two longitudinal guide rails slidably connected to the top of the lateral movement frame through a slide, and the two longitudinal guide rails are fixed to the mold frame. One side of the lateral movement frame is provided with a longitudinal movement drive electric push rod that drives the mold frame and the longitudinal guide rails to move. One side of the lateral movement frame is provided with a positioning assembly, and the positioning assembly includes an induction frame installed at the bottom of the lateral movement frame, and one side of one of the lateral guide rails is provided with three slot-shaped photoelectric switches that cooperate with the induction frame.

[0019] A method for testing the quality of thermosetting powder coatings comprises the following steps:

[0020] S1: Place the wooden board, plastic board and metal board sprayed with thermosetting powder coating in the slots opened inside the mold frame respectively;

[0021] S2: To perform adhesion testing, the mold frame is moved to the adhesion testing station, i.e., inside the adhesion testing assembly, by the longitudinal movement mechanism provided on the movement assembly. At this time, the adhesion testing assembly performs a reciprocating scraping action on the upper surfaces of the wooden board, plastic board, and metal board. After the scraping is completed, the mold frame is removed from the adhesion testing station and reset;

[0022] S3: To perform a hardness test, the mold frame is moved to the hardness test station, i.e., inside the hardness test assembly, by means of the cooperation of the lateral and longitudinal movement mechanisms provided on the movement assembly. At this time, the hardness test assembly performs vibration and tapping tests on the wood, plastic, and metal sheets, as well as compression and bending tests within their elastic deformation ranges. After the hardness test is completed, the mold frame is removed from the hardness test station and reset.

[0023] S4: To perform a flexibility test, the mold frame is moved to the flexibility test station, i.e., inside the flexibility test assembly, by means of the cooperation of the lateral and longitudinal movement mechanisms provided on the movement assembly. At this time, the flexibility test assembly performs a twisting operation on the wooden board, plastic board, and metal board within their elastic deformation to test the adhesion of the thermosetting powder coating attached to the surface of the wooden board, plastic board, and metal board when the board is twisted and deformed. After the flexibility test is completed, the mold frame is removed from the flexibility test station and reset.

[0024] S5: Then, multiple sets of visual inspection components are set up to visually inspect the thermosetting powder coatings sprayed on wooden boards, plastic boards and metal boards after different testing processes, so as to identify whether the thermosetting powder coatings sprayed on different substrates meet the standards after testing.

[0025] Compared with the prior art, the present invention provides a thermosetting powder coating quality testing device and testing method, which has the following beneficial effects:

[0026] 1. The present invention tests the surface bonding strength between thermosetting powder coatings and different substrates by testing the thermosetting powder coatings sprayed on wooden boards, plastic boards and metal boards respectively.

[0027] 2. The present invention realizes the surface bonding quality test of thermosetting powder coatings and different substrates by using the adhesion detection component, hardness detection component and flexibility detection component in combination, and the equipment has a high degree of integration, which improves the test efficiency.

[0028] 3. The present invention provides a shifting assembly to achieve precise switching of the mold frame between the adhesion testing station, the hardness testing station, and the flexibility testing station, with a high degree of automation.

[0029] 4. The present invention scrapes and pulls the thermosetting powder coating sprayed on the surface of the wooden board, plastic board and metal board respectively through three reciprocating scraping claws to observe whether the thermosetting powder coating is scratched or damaged, so as to judge whether the adhesion of the thermosetting powder coating to different materials meets the standards.

[0030] 5. The present invention drives the vibration frame and the beating ball to vibrate through the vibration generated by the rotation of the vibration motor, and vibrates and beats the wooden boards, plastic boards and metal boards placed on the mold frame to observe whether the thermosetting powder coating is cracked or damaged after the high-frequency vibration and beating, so as to judge whether the hardness of the thermosetting powder coating after attachment to different materials meets the standard.

[0031] 6. The present invention presses the wooden board, plastic board and metal board placed on the mold frame through the side pressure mechanism, effectively preventing the wooden board, plastic board and metal board from being out of the preset position during the hardness test.

[0032] 7. The three sets of pressing cylinders of the present invention can control the downward movement size of the pressing upper mold knife according to the elastic deformation properties of different substrates. Therefore, by applying bending stress to simulate the deformation of wooden boards, plastic boards and metal boards in actual use, the adhesion stability of thermosetting powder coatings when the substrate is deformed and the change in coating hardness are observed.

[0033] 8. The present invention completes the position change of the wooden boards, plastic boards and metal boards placed on the mold frame through the cooperation of the lower top frame and the upper pressure frame, so as to facilitate the subsequent clamping and twisting tests of the wooden boards, plastic boards and metal boards respectively through the fixed clamping frame and the twisting clamping frame. The state of the wooden boards, plastic boards and metal boards under complex stress is simulated by torsional loading, and the collaborative deformation ability and crack resistance of thermosetting powder coatings with different substrates are tested.

[0034] 9. The present invention uses multiple groups of CCD cameras to visually inspect thermosetting powder coatings sprayed on wooden boards, plastic boards and metal boards after different testing processes to identify whether the thermosetting powder coatings sprayed on different substrates meet the standards after testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the front three-dimensional structure of a thermosetting powder coating quality testing device proposed by the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of a moving component of a thermosetting powder coating quality testing device proposed by the present invention;

[0037] Figure 3 A thermosetting powder coating quality testing device proposed by the present invention Figure 2 Schematic diagram of the partially enlarged structure;

[0038] Figure 4 This is a schematic diagram of the lifting component structure of a thermosetting powder coating quality testing device proposed by the present invention;

[0039] Figure 5 This is a schematic structural diagram of an adhesion detection component of a thermosetting powder coating quality testing device proposed by the present invention;

[0040] Figure 6 A thermosetting powder coating quality testing device proposed by the present invention Figure 5 Schematic diagram of the explosion structure;

[0041] Figure 7 This is a schematic diagram of the structure of a driven slide of a thermosetting powder coating quality testing device proposed by the present invention;

[0042] Figure 8 This is a schematic structural diagram of a hardness detection component of a thermosetting powder coating quality testing device proposed by the present invention;

[0043] Figure 9 A thermosetting powder coating quality testing device proposed by the present invention Figure 8 Schematic diagram of a local enlarged structure;

[0044] Figure 10 This is a schematic structural diagram of a side pressure mechanism of a thermosetting powder coating quality testing device proposed by the present invention;

[0045] Figure 11 This is a schematic diagram of the bending mechanism structure of a thermosetting powder coating quality testing device proposed by the present invention;

[0046] Figure 12 This is a schematic structural diagram of a flexibility detection component of a thermosetting powder coating quality testing device proposed by the present invention;

[0047] Figure 13 This is a schematic diagram of the upper press frame structure of a thermosetting powder coating quality testing device proposed by the present invention;

[0048] Figure 14 A thermosetting powder coating quality testing device proposed by the present invention Figure 12 Schematic diagram of a local enlarged structure;

[0049] Figure 15 This is a schematic diagram of the lower frame structure of a thermosetting powder coating quality testing device proposed by the present invention;

[0050] Figure 16 A thermosetting powder coating quality testing device proposed by the present invention Figure 14 Schematic diagram of the local enlarged structure.

[0051] Figure: 1, workbench; 2, mold frame; 3, transfer assembly; 4, adhesion detection assembly; 5, hardness detection assembly; 6, flexibility detection assembly; 7, positioning assembly; 8, visual detection assembly; 9, lifting assembly; 301, horizontal transfer mechanism; 302, longitudinal transfer mechanism; 303, one-way threaded rod; 304, horizontal transfer frame; 305, horizontal guide rail; 306, horizontal transfer drive motor; 307, longitudinal transfer drive motor Push rod; 308, longitudinal guide rail; 401, adhesion detection support frame; 402, scraper claw; 403, mounting rod; 404, left and right movable slide; 405, rotating shaft; 406, rotating drive motor; 407, lever; 408, turntable; 409, rocker arm; 410, pressure spring; 411, pull rope; 412, driven slide; 413, slideway; 501, hardness detection support frame; 502, side pressure frame; 503, Vibration frame; 504, side pressure spring; 505, mounting slot; 506, roller; 507, connecting spring; 508, vibration motor; 509, knocking ball; 510, pressing die knife; 511, pressing cylinder; 601, upper pressure frame; 602, upper pressure spring; 603, lower top frame; 604, telescopic rod; 605, lifting cylinder; 606, support plate; 607, support rail; 608, two-way drive motor; 609, slide Frame 1; 610, bidirectional threaded rod; 611, slide 2; 612, fixed clamp frame; 613, screw clamp frame; 614, screw motor; 615, angle plate; 616, pointer; 617, screw shaft; 701, induction frame; 702, slot-type photoelectric switch; 801, CCD camera; 802, side mounting frame; 901, vertical pole; 902, lifting plate; 903, lifting rod; 904, lifting cylinder; 905, top plate. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0053] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0054] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0055] See also Figures 1-16 As shown, a thermosetting powder coating quality testing equipment includes a workbench 1, a mold frame 2 is provided on the top of the workbench 1 through a shifting assembly 3, and a slot is provided inside the mold frame 2 for installing wooden boards, plastic boards and metal boards sprayed with thermosetting powder coatings. Three groups of lifting assemblies 9 are distributed in sequence on the top of the workbench 1, and the three groups of lifting assemblies 9 are respectively provided with an adhesion detection assembly 4, a hardness detection assembly 5 and a flexibility detection assembly 6 for testing different substrates sprayed with thermosetting powder coatings set inside the mold frame 2. The shifting assembly 3 includes a horizontal shifting mechanism 301 and a longitudinal shifting mechanism 302 for switching different workstations of the mold frame 2, and one side of the three groups of lifting assemblies 9 is provided with a visual detection assembly 8 for detecting different substrates sprayed with thermosetting powder coatings.

[0056] Specifically, thermosetting powder coatings are widely used in the field of industrial coatings due to their advantages such as environmental friendliness, high adhesion and chemical corrosion resistance. One of the more important processes in the processing of thermosetting powder coatings is the quality inspection of thermosetting powder coatings. Since thermosetting powder coatings can be sprayed on different substrate surfaces, it is particularly important to classify and inspect thermosetting powder coatings sprayed on different substrate surfaces.

[0057] The testing standards for thermosetting powder coatings sprayed on different substrates are different, such as wood boards, plastic boards, and metal boards. Therefore, targeted testing is required for different substrates. It should be noted that the wood boards are man-made fiber boards, and the man-made fiber boards, plastic boards, and metal boards used in the test are all thin substrates with certain elastic deformation properties, so they can meet the deformation requirements during the test.

[0058] First, thermosetting powder coating is sprayed onto the surfaces of the wooden board, plastic board and metal board respectively and cured, and then the wooden board, plastic board and metal board are placed in the slots opened inside the mold frame 2 respectively.

[0059] During adhesion testing, the mold frame 2 is moved to the adhesion testing station, i.e., inside the adhesion testing assembly 4, by the longitudinal shifting mechanism 302 provided on the shifting assembly 3. At this time, the adhesion testing assembly 4 performs reciprocating scraping action on the upper surfaces of the wooden board, plastic board and metal board respectively. After the scraping is completed, the mold frame 2 is moved out of the adhesion testing station and reset.

[0060] To perform a hardness test, the mold frame 2 is moved to the hardness test station, i.e., the inside of the hardness test assembly 5, by the cooperation of the lateral movement mechanism 301 and the longitudinal movement mechanism 302 provided on the movement assembly 3. At this time, the hardness test assembly 5 performs vibration and tapping tests on the wooden board, plastic board and metal board respectively, and performs bending tests on the wooden board, plastic board and metal board within their elastic deformation. After the hardness test is completed, the mold frame 2 is moved out of the hardness test station and reset.

[0061] During the flexibility test, the mold frame 2 is moved to the flexibility test station, i.e., inside the flexibility test assembly 6, by the cooperation of the lateral movement mechanism 301 and the longitudinal movement mechanism 302 provided on the movement assembly 3. At this time, the flexibility test assembly 6 is used to respectively perform a screwing operation on the wooden board, plastic board and metal board within their elastic deformation to detect the adhesion of the thermosetting powder coating attached to the surface of the wooden board, plastic board and metal board when the board is twisted and deformed. After the flexibility test is completed, the mold frame 2 is moved out of the flexibility test station and reset.

[0062] The lateral shift mechanism 301 of the present invention includes two lateral guide rails 305 fixed to the top of the workbench 1 by bolts, and a lateral shift frame 304 is slidably connected between the two lateral guide rails 305 through a slide. The top of the workbench 1 is rotatably connected to a one-way threaded rod 303 through a bearing seat, and the one-way threaded rod 303 is threadedly connected to the lateral shift frame 304 through a threaded sleeve. The top of the workbench 1 is provided with a lateral shift drive motor 306 that drives the one-way threaded rod 303 to rotate along the axial direction. The longitudinal shift mechanism 302 includes a The slide is slidably connected to the two longitudinal guide rails 308 at the top of the transverse movement frame 304, and the two longitudinal guide rails 308 are fixed to the mold frame 2. One side of the transverse movement frame 304 is provided with a longitudinal movement driving electric push rod 307 that drives the mold frame 2 and the longitudinal guide rails 308 to move. One side of the transverse movement frame 304 is provided with a positioning component 7. The positioning component 7 includes a sensing frame 701 installed at the bottom of the transverse movement frame 304, and one side of one transverse guide rail 305 is provided with three slot-shaped photoelectric switches 702 that cooperate with the sensing frame 701.

[0063] Specifically, by starting the lateral shift drive motor 306, the lateral shift drive motor 306 rotates through the threaded sleeve to drive the lateral shift frame 304 to move along the two lateral guide rails 305. At this time, the lateral shift of the mold frame 2 is completed. At the same time, through the cooperation of the slot-type photoelectric switch 702 and the sensing frame 701, the mold frame 2 is accurately positioned at the adhesion detection station, the hardness detection station and the flexibility detection station. Then, by starting the longitudinal shift drive electric push rod 307, the longitudinal shift drive electric push rod 307 is extended to drive the mold frame 2 and the two longitudinal guide rails 308 to move inward, thereby realizing the longitudinal shift of the mold frame 2.

[0064] It should be noted that the slot-type photoelectric switch 702 and the induction frame 701 are prior arts, and those skilled in the art can configure them according to actual needs, which will not be described in detail here.

[0065] The lifting assembly 9 in the present invention includes four vertical poles 901 fixed to the top of the workbench 1 by bolts, a top plate 905 is fixed between the top ends of the four vertical poles 901 by bolts, lifting rods 903 are inserted at the four corners of the top plate 905, and a lifting plate 902 is fixed between the bottom ends of the four lifting rods 903 by bolts. A lifting cylinder 904 is provided on the top of the top plate 905 for driving the lifting plate 902 and moving it in the vertical direction through the lifting rods 903.

[0066] Specifically, one end of the piston rod of the lifting cylinder 904 passes through the top plate 905 and is fixed to the lifting plate 902. Therefore, by starting the lifting cylinder 904, the lifting cylinder 904 extends and drives the lifting plate 902 to descend through the lifting rod 903.

[0067] The visual inspection assembly 8 includes a side mounting frame 802 fixed to one side of the top plate 905 by bolts, and a CCD camera 801 is fixed to one end of the side mounting frame 802 by bolts.

[0068] Specifically, CCD camera 801 is connected to an image processing unit. The CCD camera 801 converts light signals into charge signals via a photosensitive element, which then outputs a digital image via analog-to-digital conversion (ADC). The image processing unit can run algorithms to perform tasks such as feature extraction and defect identification. This is conventional technology, and those skilled in the art can configure it based on actual needs. This is not detailed here.

[0069] Therefore, the CCD camera 801 is used to perform visual inspection of the thermosetting powder coating sprayed on the wooden board, plastic board and metal board after the test to identify whether the quality meets the standards.

[0070] The adhesion detection assembly 4 of the present invention includes two adhesion detection support frames 401 fixed to the top of the workbench 1 by bolts to support the mold frame 2, and the bottom of the lifting plate 902 located at the adhesion detection station is fixed with two mounting rods 403 by bolts, and a left and right movable slide 404 is slidably connected between the two mounting rods 403, and the interior of the left and right movable slide 404 is rotatably connected with a rotating shaft 405 through a bearing, and the bottom of the rotating shaft 405 is fixed with three scraping claws 402 corresponding to the wooden board, plastic board and metal board by bolts, and rocker arms 409 are fixed to both ends of the rotating shaft 405 by bolts, and pull ropes 411 are fixed to both sides of the left and right movable slide 404 by bolts, and the pull ropes 411 are fixed to both sides of the left and right movable slide 404 by bolts. One end of the rope 411 passes through the rocker arm 409 and is bolted to a pull plate, and a pressure spring 410 is provided between the pull plate and the rocker arm 409. The bottom of the lifting plate 902 is provided with a reciprocating drive mechanism that drives the left and right movable slides 404 to move left and right. The reciprocating drive mechanism includes a driven slide 412 fixed to the top of the left and right movable slides 404 by bolts, and a slide groove 413 is provided inside the driven slide 412. The top of the lifting plate 902 is fixed with a rotation drive motor 406 by bolts, and one end of the output shaft of the rotation drive motor 406 passes through the lifting plate 902 and is fixed with a turntable 408 by bolts. The bottom end of the turntable 408 is fixed with a shift rod 407 by bolts, and the shift rod 407 is inserted into the slide groove 413.

[0071] Specifically, when performing adhesion testing, the mold frame 2 is moved to the top of the adhesion testing support frame 401 through the shifting assembly 3 and supported by the adhesion testing support frame 401. Then, the scraper claw 402 is driven downward by the lifting assembly 9 and contacts the wooden board, plastic board and metal board placed on the mold frame 2. The lifting assembly 9 continues to move downward. At this time, the scraper claw 402 is forced to drive the rotating shaft 405 to flip counterclockwise. The counterclockwise flip of the rotating shaft 405 squeezes the pressure spring 410 through the rocker arm 409 and the pull rope 411. At this time, the pressure spring 410 is pressed The force is shortened and a reaction force is generated, and then the rotary drive motor 406 is started. The rotary drive motor 406 rotates to make the turntable 408 drive the lever 407 to move along the slide groove 413. At this time, the driven slide 412 is forced to drive the left and right movable slides 404 to move to the left, so that the left and right movable slides 404 drive the three scraping claws 402 to scrape and pull the thermosetting powder coating sprayed on the upper surfaces of the wooden board, plastic board and metal board respectively, and observe whether the thermosetting powder coating is scratched or damaged, so as to judge whether the adhesion of the thermosetting powder coating to different materials meets the standards.

[0072] The hardness detection component 5 in the present invention includes two hardness detection support frames 501 fixed to the top of the workbench 1 by bolts to support the mold frame 2. The bottom of the lifting plate 902 located at the hardness detection station is provided with a side pressure mechanism for pressing the wooden board, plastic board and metal board arranged inside the mold frame 2. The four corners of the bottom of the lifting plate 902 are fixed with connecting springs 507 by bolts. The bottom ends of the four connecting springs 507 are fixed with a vibration frame 503 by bolts. The bottom of the vibration frame 503 is fixed with multiple knocking balls 509 corresponding to the wooden board, plastic board and metal board by bolts. Two groups of vibration motors 508 are fixed to the inside of the vibration frame 503 by bolts. The bottom of the vibration frame 503 is provided with a bending mechanism for pressing the wooden board, plastic board and metal board.

[0073] Specifically, when performing hardness testing, the mold frame 2 is moved to the top of the hardness testing support frame 501 through the shifting component 3, and is supported by the hardness testing support frame 501, and then the knocking ball 509 is driven downward by the lifting component 9 to contact the wooden board, plastic board and metal board placed on the mold frame 2. At this time, the vibration motor 508 is started. Since the vibration frame 503 and the lifting plate 902 are connected by the connecting spring 507, the vibration generated when the vibration motor 508 rotates drives the vibration frame 503 and the knocking ball 509 to vibrate. At this time, the vibrating knocking ball 509 vibrates and knocks the wooden board, plastic board and metal board placed on the mold frame 2 to observe whether the thermosetting powder coating is cracked or damaged after high-frequency vibration and knocking, so as to judge whether the hardness of the thermosetting powder coating after attachment to different materials meets the standard.

[0074] Since the beating balls 509 vibrate and strike the wooden boards, plastic boards and metal boards placed on the mold frame 2, the wooden boards, plastic boards and metal boards placed on the mold frame 2 are prone to vibration deviation and the like.

[0075] Therefore, the present invention provides a side pressure mechanism for pressing and fixing.

[0076] The side pressure mechanism includes two side pressure frames 502 inserted at the bottom of the lifting plate 902. Side pressure springs 504 are provided between the two side pressure frames 502 and the lifting plate 902. A plurality of mounting grooves 505 are provided at the bottom of the side pressure frames 502. Rollers 506 are rotatably connected in the mounting grooves 505.

[0077] Specifically, before conducting the hardness test, the lifting assembly 9 drives the two side pressure frames 502 to move downward, so that the two side pressure frames 502 contact the wooden boards, plastic boards and metal boards placed on the mold frame 2. At the same time, the lifting assembly 9 continues to move downward. At this time, the side pressure spring 504 is shortened and generates elastic force. The reaction force generated thereby causes the two side pressure frames 502 to press the wooden boards, plastic boards and metal boards placed on the mold frame 2, effectively preventing the wooden boards, plastic boards and metal boards from moving out of the preset position during the hardness test.

[0078] The bending mechanism includes three groups of pressing cylinders 511 fixed to the inside of the vibration frame 503 by bolts. One end of the piston rod of the pressing cylinder 511 passes through the vibration frame 503 and is fixed with a pressing upper mold knife 510 by bolts. The three groups of pressing upper mold knives 510 correspond to the wooden board, plastic board and metal board respectively.

[0079] Specifically, by starting the three groups of pressing cylinders 511, the pressing cylinders 511 extend and drive the pressing mold knife 510 to move downward and pass over the knocking ball 509. At the same time, the three groups of pressing cylinders 511 can control the downward movement size of the pressing mold knife 510 according to the elastic deformation performance of different substrates. At this time, the vibration frame 503 and the pressing mold knife 510 are driven downward by the lifting component 9 and press the middle position of the wooden board, plastic board and metal board placed on the mold frame 2, so that the wooden board, plastic board and metal board are bent under force, and the degree of bending is within the range of their elastic deformation.

[0080] Therefore, by applying bending stress to simulate the deformation of wooden boards, plastic boards and metal boards in actual use, the adhesion stability of thermosetting powder coatings and the change in coating hardness when the substrate is deformed are observed.

[0081] It should be noted that when wooden boards, plastic boards and metal boards are bent under force, the positions of their two ends will be offset. Therefore, by setting rollers 506 at the bottom of the side pressure frame 502, the friction between the two ends of the wooden boards, plastic boards and metal boards and the side pressure frame 502 when they are bent under force can be effectively reduced.

[0082] The flexibility detection component 6 in the present invention includes two support plates 606 fixed to the top of the workbench 1 by bolts, and a support guide rail 607 is fixed to the top of the support plate 606 by bolts, and a slide 1 609 and a slide 2 611 are slidably connected between the two support guide rails 607 through a slide, and a fixed clamp 612 and a screw clamp 613 are provided on the top of the slide 1 609 and the slide 2 611 for clamping wooden boards, plastic boards and metal boards respectively, and the screw clamp 613 is rotatably connected to one side of the slide 1 609 and the slide 2 611 by a screw shaft 617, and the fixed clamp 612 and the screw clamp 613 on the same side are staggered, and one side of the slide 1 609 and the slide 2 611 is provided with a screwing motor 614 for driving the screw clamp 613 to rotate along the axial direction, and a pointer 616 is fixed to one side of the screw shaft 617 by bolts. An angle disk 615 is provided to cooperate with the pointer 616. The top of the workbench 1 is rotatably connected to a bidirectional threaded rod 610 through a bearing seat. The bidirectional threaded rod 610 is threadedly connected to slide 1 609 and slide 2 611 through threaded sleeves respectively. The top of the workbench 1 is provided with a bidirectional drive motor 608 to drive the bidirectional threaded rod 610 to rotate along the axial direction. The bottom of the lifting plate 902 located at the flexibility detection station is connected with an upper pressure frame 601 for pressing the wooden board, plastic plate and metal plate arranged inside the mold frame 2. A plurality of upper pressure springs 602 are provided between the upper pressure frame 601 and the lifting plate 902. Four groups of telescopic rods 604 are fixed to the top of the workbench 1 by bolts. A lower top frame 603 cooperating with the upper pressure frame 601 is fixed between the tops of the four groups of telescopic rods 604 by bolts. The top of the workbench 1 is provided with two groups of lifting cylinders 605 that drive the lower top frame 603 to move in the vertical direction.

[0083] Specifically, when conducting flexibility testing, the mold frame 2 is moved to the flexibility testing station through the shifting component 3 and is located above the lower top frame 603. At this time, the upper pressure frame 601 is driven downward by the lifting component 9 and contacts the wooden board, plastic board and metal board inside the mold frame 2. At the same time, by starting the lifting cylinder 605, the lifting cylinder 605 extends and drives the lower top frame 603 to move upward through the telescopic rod 604 and lifts the wooden board, plastic board and metal board inside the mold frame 2. At this time, the upper pressure frame 601 moves upward with the wooden board, plastic board and metal board, and the upper pressure spring 602 shortens and generates elastic force, so that the wooden board, plastic board and metal board are always clamped by the upper pressure frame 601 and the lower top frame 603 during the rising process, effectively avoiding the position deviation of the wooden board, plastic board and metal board until the wooden board, plastic board and metal board move to the same position as the fixed clamp 612 and the screw clamp 613 When the workpiece is at a horizontal height, the bidirectional driving motor 608 is started. The rotation of the bidirectional driving motor 608 drives the bidirectional threaded rod 610 to rotate. The rotation of the bidirectional threaded rod 610 drives the slide 1 609 and the slide 2 611 to move toward the middle along the support guide rail 607 through the threaded sleeve until the two relative fixed clamps 612 and the screw clamp 613 clamp the wooden board, plastic board and metal board respectively. At this time, the lifting component 9 drives the upper pressing frame 601 to move upward and reset, and the shortening of the jacking cylinder 605 drives the lower jack frame 603 to move downward and reset. Then, the plate screwing action is carried out according to the different bending resistance of the wooden board, plastic board and metal board. At this time, the three screwing motors 614 are started respectively, so that the screwing motor 614 drives the screwing clamp 613 to rotate a specified angle through the screwing shaft 617 to complete the plate screwing action. At the same time, the rotation angle can be confirmed by the cooperation of the pointer 616 and the angle disk 615.

[0084] After the test is completed, the screwing motor 614 needs to rotate in the opposite direction to reset, and then the upper pressure frame 601 is driven downward by the lifting component 9, and the lifting cylinder 605 is extended to drive the lower lifting frame 603 to move upward, thereby completing the clamping state of the wooden board, plastic board and metal board, and the slide 1 609 and the slide 2 611 are moved outward to reset. At this time, the lifting cylinder 605 cooperates with the lifting component 9 to make the wooden board, plastic board and metal board fall back into the card slot opened inside the mold frame 2.

[0085] Therefore, the state of wooden boards, plastic boards and metal boards subjected to complex stresses is simulated by torsional loading to test the collaborative deformation ability and crack resistance of thermosetting powder coatings and different substrates.

[0086] It should be noted that the motors in the above embodiments all adopt stepper motors. Stepper motors, cylinders, electric push rods, etc. are all existing technologies. Those skilled in the art can configure them according to actual needs, and they will not be elaborated here.

[0087] A method for testing the quality of thermosetting powder coatings comprises the following steps:

[0088] S1: Place the wooden board, plastic board and metal board sprayed with thermosetting powder coating in the slots provided inside the mold frame 2 respectively;

[0089] S2: By starting the lateral movement drive motor 306, the lateral movement drive motor 306 rotates through the threaded sleeve to drive the lateral movement frame 304 to move along the two lateral guide rails 305. At this time, the lateral movement of the mold frame 2 is completed. At the same time, through the cooperation of the slot-shaped photoelectric switch 702 and the sensing frame 701, the mold frame 2 is accurately positioned at the adhesion testing station, the hardness testing station, and the flexibility testing station. Then, by starting the longitudinal movement drive electric push rod 307, the longitudinal movement drive electric push rod 307 extends, driving the mold frame 2 and the two longitudinal guide rails 308 to move inward, thereby achieving the longitudinal movement of the mold frame 2;

[0090] S3: When performing adhesion testing, the mold frame 2 is moved to the top of the adhesion testing support frame 401 through the shifting assembly 3 and supported by the adhesion testing support frame 401. Then, the scraper claw 402 is driven downward by the lifting assembly 9 and contacts the wooden board, plastic board and metal board placed on the mold frame 2. The lifting assembly 9 continues to move downward. At this time, the scraper claw 402 is forced to drive the rotating shaft 405 to flip counterclockwise. The rotating shaft 405 flips counterclockwise and squeezes the pressure spring 410 through the rocker arm 409 and the pull rope 411. At this time, the pressure spring 410 is forced The rotating drive motor 406 is then started to rotate, causing the turntable 408 to drive the lever 407 to move along the slide groove 413. At this time, the driven slide 412 is forced to drive the left and right movable slides 404 to move leftward, thereby causing the left and right movable slides 404 to drive the three scraping claws 402 to scrape the thermosetting powder coating sprayed on the wooden board, plastic board, and metal board respectively. The thermosetting powder coating is observed to see if there are scratches or damages, thereby judging whether the adhesion of the thermosetting powder coating to different materials meets the standards.

[0091] S4: When performing hardness testing, the mold frame 2 is moved to the top of the hardness testing support frame 501 by the shifting assembly 3 and supported by the hardness testing support frame 501. First, the lifting assembly 9 drives the two side pressure frames 502 to move downward, so that the two side pressure frames 502 contact the wooden board, plastic board and metal board placed on the mold frame 2. At the same time, the lifting assembly 9 continues to move downward. At this time, the side pressure spring 504 is shortened and generates elastic force. The reaction force generated thereby causes the two side pressure frames 502 to press the wooden board, plastic board and metal board placed on the mold frame 2, effectively preventing the wooden board, plastic board and metal board from moving out of the preset position during the hardness test.

[0092] S5: At the same time, the lifting assembly 9 drives the beating ball 509 to move downward and contact the wooden board, plastic board and metal board placed on the mold frame 2. At this time, the vibration motor 508 is started. Since the vibration frame 503 and the lifting plate 902 are connected by the connecting spring 507, the vibration generated by the rotation of the vibration motor 508 drives the vibration frame 503 and the beating ball 509 to vibrate. At this time, the vibrating beating ball 509 vibrates and beats the wooden board, plastic board and metal board placed on the mold frame 2 to observe whether the thermosetting powder coating is cracked or damaged after the high-frequency vibration and beating, so as to judge whether the hardness of the thermosetting powder coating after adhering to different materials meets the standard;

[0093] S6: Then the vibration motor 508 is stopped, and at this time, the three groups of pressing cylinders 511 are started. The pressing cylinders 511 extend and drive the pressing upper mold knife 510 to move downward and pass over the knocking ball 509. At the same time, the three groups of pressing cylinders 511 can control the downward movement size of the pressing upper mold knife 510 according to the elastic deformation properties of different substrates. At this time, the pressing upper mold knife 510 moves downward and presses the middle position of the wooden board, plastic board and metal board placed on the mold frame 2, so that the wooden board, plastic board and metal board are bent under force. The degree of this bending is within the range of their elastic deformation. Therefore, by applying bending stress, the deformation of the wooden board, plastic board and metal board in actual use is simulated, and the adhesion stability of the thermosetting powder coating when the substrate is deformed and the change in coating hardness are observed;

[0094] S7: When conducting flexibility test, the mold frame 2 is moved to the flexibility test station by the shifting assembly 3 and is located above the lower top frame 603. At this time, the upper pressing frame 601 is driven downward by the lifting assembly 9 and contacts the wooden board, plastic board and metal board inside the mold frame 2. At the same time, by starting the lifting cylinder 605, the lifting cylinder 605 extends and drives the lower top frame 603 to move upward through the telescopic rod 604 and lifts the wooden board, plastic board and metal board inside the mold frame 2. At this time, the upper pressing frame 601 moves upward with the wooden board, plastic board and metal board, and the upper pressing spring 602 shortens and generates elastic force, so that the wooden board, plastic board and metal board are always clamped by the upper pressing frame 601 and the lower top frame 603 during the rising process, effectively avoiding the position deviation of the wooden board, plastic board and metal board, until the wooden board, plastic board and metal board move to the same level as the fixed clamping frame 612 and the screw clamping frame 613;

[0095] S8: Then start the bidirectional driving motor 608, and the rotation of the bidirectional driving motor 608 drives the bidirectional threaded rod 610 to rotate. The rotation of the bidirectional threaded rod 610 drives the slide 1 609 and the slide 2 611 to move toward the middle along the support guide rail 607 through the threaded sleeve until the two relative fixed clamps 612 and the screw clamp 613 clamp the wooden board, plastic board and metal board respectively. At this time, the lifting component 9 drives the upper pressing frame 601 to move upward and reset, and the shortening of the jacking cylinder 605 drives the lower jacking frame 603 to move downward and reset. Then, the plate screwing action is carried out according to the different bending resistance of the wooden board, plastic board and metal board. At this time, the three screwing motors 614 are started respectively, so that the screwing motor 614 drives the screwing clamp 613 to rotate a specified angle through the screwing shaft 617 to complete the plate screwing action. At the same time, the rotation angle can be confirmed by the cooperation of the pointer 616 and the angle disk 615.

[0096] S9: After the test is completed, the screwing motor 614 needs to rotate in the reverse direction to reset, and then the upper pressing frame 601 is driven downward by the lifting assembly 9, and the lifting cylinder 605 is extended to drive the lower lifting frame 603 to move upward, thereby completing the clamping state of the wooden board, plastic board and metal board, and the slide 1 609 and the slide 2 611 are moved outward to reset. At this time, the lifting cylinder 605 cooperates with the lifting assembly 9 to make the wooden board, plastic board and metal board fall into the card slot opened inside the mold frame 2 again. Therefore, the state of the wooden board, plastic board and metal board under complex stress is simulated by torsion loading, and the collaborative deformation ability and crack resistance of the thermosetting powder coating with different substrates are tested;

[0097] S10: At this time, multiple groups of CCD cameras 801 are set up to visually inspect the thermosetting powder coatings sprayed on the wooden board, plastic board and metal board after different testing processes to identify whether the thermosetting powder coatings sprayed on different substrates meet the standards after testing.

[0098] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A thermosetting powder coating quality testing device, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a mold frame (2) through a shifting assembly (3), and a slot for installing a wooden board, a plastic board and a metal board sprayed with thermosetting powder coating is provided inside the mold frame (2). The top of the workbench (1) is provided with three groups of lifting assemblies (9) distributed in sequence, and the three groups of lifting assemblies (9) are respectively provided with an adhesion detection assembly (4), a hardness detection assembly (5) and a flexibility detection assembly (6) for testing different substrates sprayed with thermosetting powder coating set inside the mold frame (2). The shifting assembly (3) includes a lateral shifting mechanism (301) and a longitudinal shifting mechanism (302) for switching different workstations of the mold frame (2), and one side of each of the three groups of lifting assemblies (9) is provided with a visual detection assembly (8) for detecting different substrates sprayed with thermosetting powder coating.

2. A thermosetting powder coating quality testing device according to claim 1, characterized in that: The lifting assembly (9) includes four vertical rods (901) fixedly connected to the top of the workbench (1), a top plate (905) fixedly connected between the top ends of the four vertical rods (901), lifting rods (903) inserted at the four corners of the top plate (905), a lifting plate (902) fixedly connected between the bottom ends of the four lifting rods (903), a lifting cylinder (904) for driving the lifting plate (902) and moving it in a vertical direction through the lifting rods (903) is provided on the top of the top plate (905), and the visual inspection assembly (8) includes a side mounting frame (802) fixedly connected to one side of the top plate (905), and a CCD camera (801) fixedly connected to one end of the side mounting frame (802).

3. A thermosetting powder coating quality testing device according to claim 2, characterized in that: The adhesion detection assembly (4) comprises two adhesion detection support frames (401) fixedly connected to the top of the workbench (1) for supporting the mold frame (2); the bottom of the lifting plate (902) located at the adhesion detection station is fixedly connected to two mounting rods (403); a left and right movable slide (404) is slidably connected between the two mounting rods (403); the interior of the left and right movable slide (404) is rotatably connected to a rotating shaft (405) through a bearing; the bottom of the rotating shaft (405) is fixedly connected to three The wooden board, plastic board and metal board are used as corresponding scraping claws (402), both ends of the rotating shaft (405) are fixedly connected to rocking arms (409), both sides of the left and right movable slide (404) are fixedly connected to pull ropes (411), and one end of the pull rope (411) passes through the rocking arm (409) and is bolted to a pull plate, and a pressure spring (410) is provided between the pull plate and the rocking arm (409), and a reciprocating drive mechanism for driving the left and right movable slide (404) to move left and right is provided at the bottom of the lifting plate (902).

4. A thermosetting powder coating quality testing device according to claim 3, characterized in that: The reciprocating drive mechanism includes a driven slide (412) fixedly connected to the top of the left and right movable slides (404), a slide groove (413) is provided inside the driven slide (412), a rotary drive motor (406) is fixedly connected to the top of the lifting plate (902), one end of the output shaft of the rotary drive motor (406) passes through the lifting plate (902) and is fixedly connected to the turntable (408), and a shift rod (407) is fixedly connected to the bottom end of the turntable (408), and the shift rod (407) is inserted into the slide groove (413).

5. The thermosetting powder coating quality testing device according to claim 2, characterized in that: The hardness detection component (5) comprises two hardness detection support frames (501) fixedly connected to the top of the workbench (1) for supporting the mold frame (2); the bottom of the lifting plate (902) located at the hardness detection station is provided with a side pressure mechanism for pressing the wooden board, plastic board and metal board arranged inside the mold frame (2); the four corners of the bottom of the lifting plate (902) are fixedly connected with connecting springs (507); the bottom ends of the four connecting springs (507) are fixedly connected with a vibration frame (503); the bottom of the vibration frame (503) is fixedly connected with a plurality of knocking balls (509) corresponding to the wooden board, plastic board and metal board; the interior of the vibration frame (503) is fixedly connected with two groups of vibration motors (508); the bottom of the vibration frame (503) is provided with a bending mechanism for pressing the wooden board, plastic board and metal board.

6. The thermosetting powder coating quality testing device according to claim 5, characterized in that: The side pressure mechanism comprises two side pressure frames (502) plugged into the bottom of the lifting plate (902), side pressure springs (504) are provided between the two side pressure frames (502) and the lifting plate (902), a plurality of mounting grooves (505) are provided at the bottom of the side pressure frames (502), and rollers (506) are rotatably connected in the mounting grooves (505).

7. The thermosetting powder coating quality testing device according to claim 5, characterized in that: The bending mechanism comprises three groups of pressing cylinders (511) fixedly connected to the inside of the vibration frame (503), one end of the piston rod of the pressing cylinder (511) passes through the vibration frame (503) and is fixedly connected to a pressing upper die knife (510), and the three groups of pressing upper die knives (510) correspond to the wooden board, the plastic board and the metal board respectively.

8. The thermosetting powder coating quality testing device according to claim 2, characterized in that: The flexibility detection component (6) includes two support plates (606) fixedly connected to the top of the workbench (1), the top of the support plate (606) is fixedly connected to a support guide rail (607), and a slide frame (609) and a slide frame (611) are slidably connected between the two support guide rails (607) via a slide, and the tops of the slide frame (609) and the slide frame (611) are provided with a fixed clamping frame (612) and a screw clamping frame (613) for clamping the wooden board, the plastic board and the metal board respectively, and the screw clamping frame ( 613) is rotatably connected to one side of the slide 1 (609) and the slide 2 (611) through a screwing shaft (617), and the fixed clamping frame (612) and the screwing clamping frame (613) located on the same side are staggered. One side of the slide 1 (609) and the slide 2 (611) is provided with a screwing motor (614) for driving the screwing clamping frame (613) to rotate along the axis direction. One side of the screwing shaft (617) is fixedly connected to a pointer (616). One side of the slide 1 (609) and the slide 2 (611) is provided with a screwing motor (614) for driving the screwing clamping frame (613) to rotate along the axis direction. An angle plate (615) is provided to match the pointer (616). The top of the workbench (1) is rotatably connected to a bidirectional threaded rod (610) through a bearing seat. The bidirectional threaded rod (610) is threadedly connected to the slide 1 (609) and the slide 2 (611) through threaded sleeves. The top of the workbench (1) is provided with a bidirectional driving motor (608) for driving the bidirectional threaded rod (610) to rotate along the axial direction. The bottom of the lifting plate (902) located at the flexibility detection station is plugged with a mold frame (2). An upper pressing frame (601) is provided with wooden boards, plastic boards and metal boards arranged inside for pressing, a plurality of upper pressing springs (602) are provided between the upper pressing frame (601) and the lifting plate (902), four groups of telescopic rods (604) are fixedly connected to the top of the workbench (1), a lower top frame (603) cooperating with the upper pressing frame (601) is fixedly connected between the top ends of the four groups of telescopic rods (604), and two groups of lifting cylinders (605) are provided on the top of the workbench (1) for driving the lower top frame (603) to move in the vertical direction.

9. The thermosetting powder coating quality testing device according to claim 1, characterized in that: The lateral shift mechanism (301) comprises two lateral guide rails (305) fixedly connected to the top of the workbench (1), a lateral shift frame (304) is slidably connected between the two lateral guide rails (305) via a slide, a one-way threaded rod (303) is rotatably connected to the top of the workbench (1) via a bearing seat, and the one-way threaded rod (303) is threadedly connected to the lateral shift frame (304) via a threaded sleeve, a lateral shift drive motor (306) is provided on the top of the workbench (1) for driving the one-way threaded rod (303) to rotate along the axial direction, and the longitudinal shift mechanism (302) comprises a one-way threaded rod (303) slidably connected to the top of the workbench (1) via a slide. Two longitudinal guide rails (308) are provided on the top of the transverse shifting frame (304), and the two longitudinal guide rails (308) are fixed to the mold frame (2). One side of the transverse shifting frame (304) is provided with a longitudinal shifting driving electric push rod (307) for driving the mold frame (2) and the longitudinal guide rails (308) to move. One side of the transverse shifting frame (304) is provided with a positioning assembly (7). The positioning assembly (7) includes a sensing frame (701) installed at the bottom of the transverse shifting frame (304), and one side of one of the transverse guide rails (305) is provided with three slot-shaped photoelectric switches (702) that cooperate with the sensing frame (701).

10. A thermosetting powder coating quality testing method, applicable to the thermosetting powder coating quality testing device according to claim 1, characterized in that: The following steps are involved: S1: placing the wooden board, plastic board and metal board sprayed with thermosetting powder coating in the slots provided inside the mold frame (2); S2: To perform adhesion testing, the longitudinal shifting mechanism (302) provided on the shifting assembly (3) drives the mold frame (2) to move to the adhesion testing station, i.e., the interior of the adhesion testing assembly (4). At this time, the adhesion testing assembly (4) performs a reciprocating scraping action on the upper surfaces of the wooden board, the plastic board, and the metal board. After the scraping is completed, the mold frame (2) is moved out of the adhesion testing station and reset; S3: To perform a hardness test, the mold frame (2) is moved to the hardness test station, i.e., the inside of the hardness test assembly (5), by the cooperation of the lateral movement mechanism (301) and the longitudinal movement mechanism (302) provided on the movement assembly (3). At this time, the hardness test assembly (5) performs a vibration and knocking test on the wooden board, the plastic board, and the metal board, and performs a bending test within the elastic deformation range of the wooden board, the plastic board, and the metal board. After the hardness test is completed, the mold frame (2) is removed from the hardness test station and reset; S4: Flexibility testing is performed, and the mold frame (2) is moved to the flexibility testing station, i.e., inside the flexibility testing assembly (6), by the cooperation of the lateral shifting mechanism (301) and the longitudinal shifting mechanism (302) provided on the shifting assembly (3). At this time, the wood board, the plastic board and the metal board are respectively screwed in their elastic deformation by the flexibility testing assembly (6) to detect the adhesion of the thermosetting powder coating attached to the surface of the wood board, the plastic board and the metal board when the board is screwed and deformed. After the flexibility test is completed, the mold frame (2) is removed from the flexibility testing station and reset; S5: Then, multiple sets of visual inspection components (8) are set up to visually inspect the thermosetting powder coatings sprayed on the wooden board, plastic board and metal board after different testing processes, so as to identify whether the thermosetting powder coatings sprayed on different substrates meet the standards after testing.

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