A UV aging test device for automobile surface protective coating

Abstract

The invention belongs to the technical field of ultraviolet aging test of protective coating, and particularly relates to a UV ultraviolet aging test device for automobile surface protective coating, comprising a test box; a sample table is built in the test box, and a plurality of ultraviolet lamp tubes are arranged on the top of the test box, and a plurality of spray pipes are arranged on the top of the test box; an ultraviolet irradiation lamp is arranged on the inner vertical wall of one side of the test box, and a reflection unit is arranged on the inner vertical wall of the other side of the test box, and the reflection unit corresponds to the ultraviolet irradiation lamp; two groups of lifting and adjusting mechanisms are built in the test box, one group of lifting and adjusting mechanisms is connected to the ultraviolet irradiation lamp, and the other group of lifting and adjusting mechanisms is connected to the reflection unit; the test sample can be exposed to both direct ultraviolet rays and reflected ultraviolet rays, so that the test device of the invention can simulate different irradiation modes of ultraviolet light to perform aging tests on the test samples, thereby improving the effect of anti-ultraviolet aging tests on automobile surface protective coatings.

Description

Technical Field

[0001] The invention belongs to the technical field of ultraviolet light aging test of protective coatings, and in particular relates to a UV ultraviolet light aging test device for protective coatings on automobile surfaces. Background Art

[0002] Using organic coating for anti-corrosion is a widely used anti-corrosion technology. In the atmospheric environment, organic coatings are affected by environmental factors and age, which is one of the main factors causing coating failure, causing a large amount of resource consumption and serious economic losses, and even causing serious accidents, posing a threat to the safety of equipment and life and property. The climate environment tests used for coating evaluation include natural environment tests and laboratory simulated accelerated environment tests.

[0003] Although the existing UV aging test equipment can perform anti-UV aging tests on the protective coating on the surface of the car, the test method can only place the sample to be tested on the platform of the test box 1, and then turn on the ultraviolet lamp in the test box 1 to perform anti-UV aging tests on the test sample, and then perform various environmental simulation tests by spraying water.

[0004] However, due to the influence of the driving or parking environment of the car, some ultraviolet rays will be reflected by the reflective components onto the protective coating on the surface of the car. According to research, the intensity of ultraviolet rays generated after surface reflection is greater than the intensity of ultraviolet rays generated by direct irradiation. However, the existing test equipment can only perform ultraviolet light aging tests on test samples by direct irradiation, and cannot perform aging tests on test samples by simulating reflected ultraviolet light, which affects the accuracy and efficiency of the ultraviolet light aging test of the protective coating on the surface of the car. Summary of the invention

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a UV ultraviolet light aging test device for automobile surface protective coating, comprising a test box; the test box is provided with a sample table, a plurality of ultraviolet lamp tubes are arranged on the top of the test box, and a plurality of spray pipes are arranged on the top of the test box;

[0007] An ultraviolet irradiation lamp is arranged on the inner vertical wall of one side of the test box, and a reflection unit is arranged on the inner vertical wall of the other side of the test box, and the reflection unit corresponds to the ultraviolet irradiation lamp;

[0008] The test box is internally provided with two sets of lifting and adjusting mechanisms, one set of the lifting and adjusting mechanisms is connected to the ultraviolet irradiation lamp, and the other set of the lifting and adjusting mechanisms is connected to the reflection unit.

[0009] Furthermore, the lifting and adjusting mechanism includes a lifting screw, which is symmetrically placed vertically on the left and right side walls inside the test box, and each of the lifting screws is provided with a support slider through a screw nut sleeve, a guide strip is connected between the upper and lower support sliders, and the guide strip is slidably placed in a sliding guide groove vertically opened on the left and right side walls of the test box, a support strip is horizontally placed on the outer side surface of one of the support sliders, and the ends of the support strip are connected to a mounting plate through a swing adjustment assembly, and ultraviolet lamps and reflection units are respectively installed on the symmetrical mounting plates.

[0010] Furthermore, the swing adjustment component includes an articulated ear block, at least four articulated ear blocks are arranged on the mounting plate, and every two of the articulated ear blocks are mirror-imaged front and back, and an articulated shaft is rotatably connected between every two of the articulated ear blocks through a rotating sleeve, the articulated shaft located at the top is placed on a supporting strip, the articulated shaft located at the bottom is connected to one end of the first swing plate, an articulated shaft is arranged on the side of the supporting slider located at the bottom, and the articulated shaft is rotatably connected to the two side groove walls of a U-shaped air avoidance groove opened at one end of the second swing plate, and the other end of the first swing plate is rotatably connected to the U-shaped air avoidance groove opened at the other end of the second swing plate through a connecting shaft, a conical soft rod is arranged on the second swing plate, an electric telescopic rod is vertically arranged on the supporting strip, and the output rod of the electric telescopic rod is connected to the conical soft rod, and a tight limiting assembly is arranged on the supporting strip corresponding to the mounting plate on which the reflection unit is installed.

[0011] Furthermore, the lifting and lowering adjustment mechanism also includes an inclined baffle, a connecting soft plate and a vertical support block. The upper surface of the mounting plate is provided with an inclined baffle inclined upward, and the inclined baffle is designed in sections. The sections of the inclined baffles are connected by connecting soft plates. The inclined baffle is sleeved with a rotating lifting screw, and the lower surface of the end of the inclined baffle away from the mounting plate is connected to the guide strip through a vertical support block.

[0012] Furthermore, the tight limit assembly includes a sliding block, a limit slot is horizontally provided on the support strip on which the reflection unit is installed, and a sliding block is slidably inserted in the limit slot, one end of the sliding block is in contact with the mounting plate, and the other end is connected to the slot wall of the limit slot through a return spring, the thickness of the sliding block is greater than the slot depth of the limit slot, a sliding rod is vertically slidably inserted in the support strip, the top end of the sliding rod is connected to a lifting block arranged on the top surface of the support strip, and the lower surface of the lifting block is connected to the top of the support strip through an insulated electromagnetic suction cup. The metal layer with surface insulation is detachably adsorbed and connected, and a blind slot is provided on the lower surface of the end of the lifting block close to the mounting plate, and the blind slot is vertically engaged with the sliding block, and the right side bottom of the blind slot is in contact with the right end of the sliding block, and a return spring is sleeved on the sliding rod located on the bottom surface of the supporting strip, and a limiting ring is fixed on the sliding rod, and the limiting ring is connected to the bottom of the return spring, and the top of the return spring is connected to the bottom surface of the supporting strip, and a push block is provided on the output rod of the electric telescopic rod, and the push block is in sliding contact with the bottom end of the sliding rod.

[0013] Furthermore, storage boxes are fixed on the bottom of both sides of the test box, and the storage boxes are located on both sides of the sample table. A water accumulation cavity is formed between the side walls of the storage box and the side walls of the sample table. The box walls of the storage box and the test box that are in contact with each other are vertically provided with air avoidance grooves, and the air avoidance grooves are aligned with the sliding guide grooves.

[0014] Furthermore, a limiting guide groove is provided on the inner wall surface of the storage box near the sample table, a sealing guide plate is obliquely arranged in the storage box, and one end of the sealing guide plate is slidably arranged in the limiting guide groove through a limiting guide bar, and the sealing guide plate is slidably sleeved on the lifting screw, a guide sleeve is fixed on the lower surface of the joint between the sealing guide plate and the lifting screw, and the bottom of the guide sleeve is connected to the bottom of the storage box through a supporting spring.

[0015] Furthermore, the reflection unit is one of a metal reflector, a reflective mirror or reflective glass.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the present invention, a reflection unit and an ultraviolet irradiation lamp are respectively installed on the vertical walls on both sides of the test box through a lifting and adjusting mechanism. The lifting and adjusting mechanism adjusts the downward tilt angle and the height from the sample table of the reflection unit, so that the irradiation angle generated by the reflection of ultraviolet light can be adjusted, so that different positions of the test sample can be exposed to the ultraviolet light generated by reflection, and another set of lifting and adjusting mechanisms can adjust the height and swing angle of the ultraviolet irradiation lamp, so that it can correspond to the downward tilted reflection unit at different angles, so as to improve the accuracy of irradiating the ultraviolet light generated by reflection to the test sample, so that the test sample can be exposed to both direct ultraviolet light and reflected ultraviolet light, so that the test device of the present invention can simulate different irradiation modes of ultraviolet light to perform aging tests on the test samples, thereby improving the effect of anti-ultraviolet aging tests on automobile surface protective coatings.

[0018] 2. The present invention arranges a swing adjustment component on the side of the bottom end of the mounting plate, so that the mounting plate equipped with the reflective unit can be rotated and swung and adjusted in a tilted downward state continuously, so that the ultraviolet light irradiated by the ultraviolet irradiation lamp at any height can be accurately irradiated to each part of the test sample by the reflective unit in the tilted downward state and swinging adjustment. The first swing plate and the second swing plate are hinged on the lower inner side surface of the mounting plate, and the electric telescopic rod is vertically arranged at a position close to the second swing plate, so that the mounting plate equipped with the reflective unit can be swung to the maximum tilted downward state, so that the ultraviolet light reflected by the reflective unit can accurately irradiate each part of the test sample. The electric telescopic rod is vertically fixed to the supporting strip on the inner side of the mounting plate, and will not interfere with the lifting and lowering of the mounting plate without affecting the normal swing of the mounting plate.

[0019] 3. The present invention uses a pressing and limiting assembly arranged on the supporting strip to press and limit the mounting plate in a vertical state, so as to prevent the mounting plate equipped with the reflecting unit from tilting and swinging upward when the conveying rod of the electric telescopic rod continues to be recovered, thereby causing the ultraviolet light reflected by the reflecting unit to irradiate other components inside the test box and easily cause damage. At the same time, the pressing and limiting assembly can be separated from the pressing of the mounting plate, so that the reflecting unit can be temporarily tilted upward to contact with falling water droplets, so that a certain amount of water droplets are attached to the surface of the reflecting unit for ultraviolet reflection treatment, so that it can more realistically simulate the environment of the automobile surface protective coating aging test.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the aging test device disclosed in the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the test box disclosed in the present invention;

[0024] Figure 3 It is a structural schematic diagram of the lifting and lowering adjustment mechanism disclosed in the present invention;

[0025] Figure 4 It is a structural schematic diagram of the tight limiter assembly disclosed in the present invention;

[0026] Figure 5 A cross-sectional view of the supporting strip disclosed in the present invention;

[0027] Figure 6 It is a cross-sectional view of the storage box disclosed in the present invention.

[0028] In the figure:

[0029] 1. Test chamber;

[0030] 2. Sample table;

[0031] 3. Ultraviolet lamp;

[0032] 4. Ultraviolet irradiation lamp;

[0033] 5. Reflection unit;

[0034] 6. Lifting adjustment mechanism; 61. Lifting screw; 62. Supporting slide block; 63. Guide strip; 64. Supporting strip; 641. Limiting slide groove; 65. Mounting plate; 66. Inclined baffle; 67. Connecting soft board; 68. Vertical support block;

[0035] 7. Swing adjustment assembly; 71. Articulated ear block; 72. Articulated shaft; 73. First swing plate; 74. Second swing plate; 741. U-shaped air avoidance groove; 75. Connecting shaft; 76. Conical soft rod; 77. Electric telescopic rod;

[0036] 8. Tightening limit assembly; 81. Sliding plug; 82. Reset spring; 83. Sliding rod; 84. Lifting block; 841. Engaging blind groove; 85. Limiting ring; 86. Pushing block;

[0037] 9. Storage box; 91. Water accumulation chamber; 92. Limit guide groove; 93. Sealing guide plate; 94. Limit guide strip; 95. Guide sleeve; 96. Support spring. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] See also Figure 1 and Figure 2 As shown, the present invention is a UV ultraviolet light aging test device for automobile surface protective coating, comprising a test box 1; the test box 1 is provided with a sample table 2, and a plurality of ultraviolet lamp tubes 3 are arranged on the top of the test box 1, and a plurality of spray pipes are arranged on the top of the test box 1;

[0041] An ultraviolet irradiation lamp 4 is disposed on an inner vertical wall of one side of the test box 1, and a reflection unit 5 is disposed on an inner vertical wall of the other side of the test box 1, and the reflection unit 5 corresponds to the ultraviolet irradiation lamp 4;

[0042] The test box 1 is equipped with two sets of lifting and adjusting mechanisms 6, one set of the lifting and adjusting mechanisms 6 is connected to the ultraviolet irradiation lamp 4, and the other set of the lifting and adjusting mechanisms 6 is connected to the reflecting unit 5. Preferably, the reflecting unit 5 is one of a metal reflector, a reflective mirror or a reflective glass.

[0043] Specifically, the present invention installs the reflection unit 5 and the ultraviolet irradiation lamp 4 on the vertical walls on both sides of the test box 1 through the lifting and adjusting mechanism 6, puts the test sample coated with the protective coating into the test box 1, and turns on a plurality of ultraviolet lamp tubes 3 as needed to directly irradiate the test sample below for ultraviolet light aging test. At the same time, a plurality of spray pipes are connected to the water tank on the top of the test box 1 to spray water mist or water droplets to implement different environmental aging tests on the test sample. When it is necessary to perform an aging test on the test sample in a reflecting state of ultraviolet light, the ultraviolet irradiation lamp 4 is first turned on to irradiate the reflection unit 5 on the opposite side, and then the lifting and adjusting mechanism 6 is continuously used to adjust the downward tilt angle of the reflection unit 5 and the height from the sample table 2 so that it can adjust the ultraviolet light reflection. The irradiation angle generated can make different positions of the test sample be exposed to the ultraviolet rays generated by the reflection, and another set of lifting and adjusting mechanisms 6 can adjust the height and swing angle of the ultraviolet irradiation lamp 4 so that it can correspond to the reflecting unit 5 that swings downward at different angles, thereby improving the accuracy of irradiating the test sample with the ultraviolet rays generated by the reflection, so that the test sample can be exposed to both direct ultraviolet rays and reflected ultraviolet rays, so that the test device of the present invention can simulate different irradiation modes of ultraviolet light to perform aging tests on the test samples, so as to more accurately simulate the influence of ultraviolet light irradiation on the automobile surface protective coating in the actual use environment, thereby improving the effect of anti-ultraviolet light aging test on the automobile surface protective coating.

[0044] See also Figure 3 and Figure 4 As shown, the lifting and adjusting mechanism 6 includes a lifting screw 61, a supporting slider 62, a guide strip 63, a supporting strip 64, a mounting plate 65 and a swing adjusting assembly 7, wherein the lifting screws 61 are symmetrically placed vertically at the left and right side walls inside the test box 1, and each of the lifting screws 61 is provided with two supporting sliders 62 through a screw nut sleeve, a guide strip 63 is connected between the upper and lower supporting sliders 62, and the guide strip 63 is slidably placed in a sliding guide groove vertically opened on the left and right side walls of the test box 1, a supporting strip 64 is horizontally placed on the outer side surface of one of the supporting sliders 62, and the end of the supporting strip 64 is connected to the mounting plate 65 through the swing adjusting assembly 7, and the ultraviolet irradiation lamp 4 and the reflection unit 5 are respectively installed on the symmetrical mounting plates 65;

[0045] Specifically, the lifting screw 61 is driven by a servo motor fixed at the bottom of the test box 1 to rotate in the test box 1, and the upper and lower support sliders 62 will slide upward or downward synchronously through the connection of the guide strip 63, and then drive the mounting plate 65 to slide upward or downward in the test box 1 through the support strip 64, and the swing adjustment component 7 will adjust the swing angle of the mounting plate 65, so that the reflection unit 5 or the ultraviolet lamp 4 can correspond to each other at different inclination angles in the test box 1, so that the ultraviolet rays generated by the reflection can be at different angles and irradiate different parts of the test sample.

[0046] See also Figure 3 and Figure 4 As shown, the swing adjustment assembly 7 includes an articulated ear block 71, an articulated shaft 72, a first swing plate 73, a second swing plate 74, a connecting shaft 75, a conical soft rod 76 and an electric telescopic rod 77. At least four articulated ear blocks 71 are arranged on the mounting plate 65, and every two articulated ear blocks 71 are arranged in a front-to-back mirror image. An articulated shaft 72 is rotatably connected between every two articulated ear blocks 71 through a rotating sleeve. The articulated shaft 72 located at the top is fixedly placed on the supporting strip 64, and the articulated shaft 72 located at the bottom is connected to one end of the first swing plate 73. The side of the supporting slider 62 located at the bottom A hinge shaft 72 is arranged, and the hinge shaft 72 is rotatably connected to the groove walls on both sides of the U-shaped avoidance groove 741 opened at one end of the second swing plate 74, and the other end of the first swing plate 73 is rotatably connected to the U-shaped avoidance groove 741 opened at the other end of the second swing plate 74 through a connecting shaft 75, a conical soft rod 76 is arranged on the second swing plate 74, an electric telescopic rod 77 is vertically arranged on the support strip 64, and the output rod of the electric telescopic rod 77 is connected to the conical soft rod 76, and a tight limit assembly 8 is arranged on the support strip 64 corresponding to the mounting plate 65 on which the reflective unit 5 is mounted;

[0047] Specifically, when it is necessary to tilt the reflecting surface of the reflecting unit 5 downward, the output rod of the electric telescopic rod 77 is controlled to extend so that the end portion of the second swing plate 74 connected to the first swing plate 73 is pushed to swing downward through the softly connected conical soft rod 76. At this time, the first swing plate 73 is connected to the U-shaped avoidance groove 741 through the connecting shaft 75. Therefore, the downward swing of the second swing plate 74 will pull the first swing plate 73 to swing downward synchronously. At this time, the angle between the second swing plate 74 and the first swing plate 73 will be reduced, thereby The swing will pull the bottom end of the mounting plate 65 toward the side of the supporting slider 62, and the top of the mounting plate 65 is rotatably connected to the supporting slider 62 through the cooperation of the hinged ear block 71 and the hinge shaft 72. Therefore, the mounting plate 65 equipped with the reflecting unit 5 can be continuously rotated and swung in a tilted downward state, so that the ultraviolet rays irradiated by the ultraviolet irradiation lamp 4 at any height can be accurately irradiated to each part of the test sample through the reflecting unit 5 in a tilted downward state and swinging adjustment. When the output rod is retracted, the mounting plate 65 will continuously drive the reflection unit 5 to swing to a vertical state. When the mounting plate 65 is in a vertical state, the conveying rod of the electric telescopic rod 77 continues to be retracted, and the tight limit assembly 8 provided on the support strip 64 will tight limit the mounting plate 65 in a vertical state to prevent the mounting plate 65 with the reflection unit 5 installed from swinging upward when the conveying rod of the electric telescopic rod 77 continues to be retracted, thereby causing the ultraviolet light reflected by the reflection unit 5 to irradiate other components inside the test box 1, which is easy to cause damage. , and the first swing plate 73 and the second swing plate 74 are hinged on the lower inner side of the mounting plate 65, and the electric telescopic rod 77 is vertically arranged at a position close to the second swing plate 74, so that the mounting plate 65 equipped with the reflection unit 5 can swing to the maximum tilt downward state, so that the ultraviolet light reflected by the reflection unit 5 can accurately irradiate every part of the test sample, and the electric telescopic rod 77 is vertically fixed to the supporting strip 64 on the inner side of the mounting plate 65, without affecting the normal swing of the mounting plate 65, and will not interfere with the lifting and lowering of the mounting plate 65;

[0048] When the angle of the ultraviolet lamp 4 needs to be adjusted, for example, when the ultraviolet lamp 4 drops below the reflecting unit 5, it is necessary to tilt the ultraviolet lamp 4 upward, and then control the output rod of the electric telescopic rod 77 on the inner side of the mounting plate 65 corresponding to the ultraviolet lamp 4 to be retracted, so that the angle between the first swing plate 73 and the second swing plate 74 does not increase much, and then the mounting plate 65 will rotate to a tilted upward state, and the supporting strip 64 corresponding to the mounting plate 65 is not installed with the tight limit assembly 8. Therefore, there will be no limit interference for the mounting plate 65 that needs to be tilted upward. When the first swing rod and the second swing plate 74 rotate to a horizontal state, the length between the two is greater than the length of the supporting strip 64, so that the mounting plate 65 is in a maximum tilted upward state, so that the ultraviolet lamp 4 can swing and adjust following the tilt angle of the reflecting unit 5 tilted downward. When the ultraviolet lamp 4 rises to above the reflecting unit 5, it is necessary to adjust the ultraviolet lamp 4 to tilt downward. The adjustment method is the same as the adjustment method of the reflecting unit 5, which will not be repeated.

[0049] See also Figure 3 and Figure 4 As shown, the lifting adjustment mechanism 6 also includes an inclined baffle 66, a connecting soft plate 67 and a vertical support block 68. The upper surface of the mounting plate 65 is provided with an inclined baffle 66 which is inclined upward, and the inclined baffle 66 is designed in sections. The sections of the inclined baffle 66 are connected by connecting soft plates 67. The inclined baffle 66 is slidably sleeved with the rotating lifting screw 61. The lower surface of the end of the inclined baffle 66 away from the mounting plate 65 is connected to the guide strip 63 through a vertical support block 68.

[0050] Specifically, the design of the inclined baffle 66 can block the water flow sprayed by the sprinkler pipe, preventing the sprayed water flow from falling into the various components inside the mounting plate 65 and affecting them; and the inclined baffle 66 is segmented and connected by a connecting soft plate 67, so that it will not interfere with the continuously swinging mounting plate 65; and when the guide strip 63 slides in the sliding guide groove, the vertical support block 68 will synchronously push the inclined inclined baffle 66 to slide up and down, so that it will not interfere with the normal rotation of the lifting screw 61.

[0051] See also Figure 4 and Figure 5As shown, the tight limit assembly 8 includes a sliding block 81, a reset spring 82, a sliding rod 83, a lifting block 84, a limit ring 85 and a push block 86. The support strip 64 on which the reflector unit 5 is installed is horizontally provided with a limit slot 641, and the sliding block 81 is slidably inserted in the limit slot 641. One end of the sliding block 81 contacts the mounting plate 65, and the other end is connected to the slot wall of the limit slot 641 through the reset spring 82. The thickness of the sliding block 81 is greater than the slot depth of the limit slot 641. A sliding rod 83 is vertically slidably inserted in the support strip 64. The top end of the sliding rod 83 is connected to the lifting block 84 set on the top surface of the support strip 64. The lower surface of the lifting block 84 is connected by an insulating The electromagnetic suction cup is detachably connected to the metal layer insulated from the top surface of the support strip 64 by adsorption. The lower surface of the end of the lifting block 84 close to the mounting plate 65 is provided with a blind slot 841, and the blind slot 841 is vertically engaged with the sliding block 81, and the right side bottom of the blind slot 841 is in contact with the right end of the sliding block 81. A return spring 82 is sleeved on the sliding rod 83 located on the bottom surface of the support strip 64, and a limit ring 85 is fixed on the sliding rod 83, and the limit ring 85 is connected to the bottom of the return spring 82, and the top of the return spring 82 is connected to the bottom surface of the support strip 64. A push block 86 is provided on the output rod of the electric telescopic rod 77, and the push block 86 is in sliding contact with the bottom end of the sliding rod 83.

[0052] Specifically, when a certain amount of water droplets are attached to the surface of the reflective unit 5 for ultraviolet reflection treatment, so as to more realistically simulate the environment of the automobile surface protective coating aging test, therefore, when the reflective unit 5 is required to briefly swing and tilt upward to contact the falling water droplets, the output rod of the electric telescopic rod 77 is controlled to be retracted, and when the mounting plate 65 is gradually in a vertical state, the push block 86 on the output rod of the electric telescopic rod 77 will contact the bottom end of the sliding rod 83, generating an upward thrust thereto, while the inner side surface of the top end of the mounting plate 65 has not yet contacted the sliding plug block 81, and the electromagnetic suction cup on the lifting block 84 is powered off and will be separated from the adsorption and fixation with the support strip 64, thereby outputting The continued recovery of the rod will push the sliding rod 83 upward through the pushing block 86. At this time, the return spring 82 will be compressed, and the sliding rod 83 will push the lifting block 84 that has been detached from the adsorption to move upward. At this time, the sliding plug block 81 will be disengaged from the engagement fixation in the engaging blind groove 841. Then, when the lifting block 84 is disengaged from the sliding plug block 81, the mounting plate 65 will rotate to a vertical state and contact the sliding plug block 81. Therefore, when the output rod continues to be recovered, the mounting plate 65 will be pushed by the first swing plate 73 and the second swing plate 74 to produce an inclined upward state, which will push the sliding plug block 81 to slide in the limiting slide groove 641 to compress the return spring 82, and the setting of the inclined baffle plate 66 will not The lifting block 84 also slides downward, and when the sliding block 81 returns to its original position under the elastic recovery of the return spring 82, the lifting block 84 just drops to the upper surface of the sliding block 81. Therefore, when the pushing block 86 is completely out of contact with the bottom end of the sliding rod 83, the lifting block 84 also slides downward. When the sliding block 81 returns to its original position under the elastic recovery of the return spring 82, the lifting block 84 just drops to the upper surface of the sliding block 81. Therefore, when the pushing block 86 is completely out of contact with the bottom end of the sliding rod 83, the lifting block 84 also slides downward. When the sliding block 81 returns to its original position under the elastic recovery of the return spring 82, the lifting block 84 just drops to the upper surface of the sliding block 81. After that, the sliding rod 83 drops to the initial position, and the engaging blind groove 841 on the lower surface of the lifting block 84 will engage with the sliding plug block 81, and then the electromagnetic suction cup on the lifting block 84 is energized to be adsorbed and fixed to the upper surface of the supporting strip 64, thereby realizing the engagement and fixation of the sliding plug block 81. Therefore, when it is only necessary to swing and adjust the upper reflection unit 5 in a tilted downward state, when the output rod of the electric telescopic rod 77 is retracted upward, the fixed sliding rod 83 will limit the rising push block 86 to prevent the recovery length angle of the output rod of the electric telescopic rod 77, which will cause the reflection unit 5 to be in a tilted upward state, and the reflected ultraviolet light will be irradiated to other components and damage them.

[0053] See also Figure 2 and Figure 6As shown, storage boxes 9 are fixed to the bottom of both sides of the test box 1, and the storage boxes 9 are located on both sides of the sample table 2, and a water accumulation cavity 91 is formed between the side walls of the storage box 9 and the side walls of the sample table 2, and the box walls of the storage box 9 that are in contact with the test box 1 are vertically provided with air avoidance slides, and the air avoidance slides are aligned with the sliding guide grooves; specifically, when only the ultraviolet lamp tube 3 on the top of the test box 1 is needed to directly irradiate the ultraviolet light onto the test sample, the ultraviolet lamp 4 and the mounting plate 65 on the reflective unit 5 are both in a vertical state, and then the rotation of the lifting screw 61 drives the vertical mounting plate 65 to descend into the storage box 9, and at this time the inclined baffle plate 66 can also be inclined to seal the box mouth of the storage box 9 to prevent the water sprayed by the spray pipe from falling into the storage box 9, and the inclined baffle plate 66 can also be inclined to guide the spray water to be discharged into the formed water accumulation cavity 91, and the design of the air avoidance slide is convenient for the guide strip 63 to slide into the storage box 9.

[0054] See also Figure 6 As shown, the inner wall surface of the storage box 9 close to the sample table 2 is provided with a limited guide groove 92, and a sealing guide plate 93 is obliquely arranged in the storage box 9, and one end of the sealing guide plate 93 is slidably arranged in the limited guide groove 92 through a limited guide strip 94, and the sealing guide plate 93 is slidably sleeved on the lifting screw 61, and a guide sleeve 95 is fixed on the lower surface of the sleeve connection between the sealing guide plate 93 and the lifting screw 61, and the bottom of the guide sleeve 95 is connected to the bottom of the storage box 9 through a support spring 96;

[0055] Specifically, when the mounting plate 65 and other components slide upward and disengage from the storage box 9, the pressed-in sealing guide plate 93 will slowly rise in the storage box 9 under the elastic restoring force of the supporting spring 96, and the limiting guide bar 94 at the end of the sealing guide plate 93 will rise in the limiting guide groove 92. When the sealing guide plate 93 rises to the upper box opening of the storage box 9, the limiting guide groove 92 will limit and block the limiting guide bar 94, and the elastic restoring force of the supporting spring 96 will continue to push the guide sleeve 95 to rise along the lifting screw 61, so that the sealing guide plate 93 will be located at the box opening of the storage box 9 in an inclined state. The sealing block is realized at the box opening of the storage box 9 to prevent the spray water from entering the storage box 9 and affecting the normal and safe storage of the ultraviolet lamp 4 and the reflection unit 5 by the storage box 9. The guide sleeve 95 is elastically sleeved on the lifting screw 61 and will not affect the normal rotation of the lifting screw 61, and will not cause tilting interference to the rising sealing guide plate 93. When the mounting plate 65 in the vertical state slides into the storage box 9, the sealing guide plate 93 will be pressed down and slide into the bottom of the storage box 9 to support the mounting plate 65 and other components, so that they can be accurately stored in the storage box 9.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A UV aging test device for automobile surface protective coating, characterized in that: The test box (1) comprises a test box (1); the test box (1) has a sample table (2) built in it, and a plurality of ultraviolet lamp tubes (3) are arranged on the top of the test box (1); and a plurality of spray pipes are arranged on the top of the test box (1); An ultraviolet irradiation lamp (4) is disposed on an inner vertical wall of one side of the test box (1), and a reflection unit (5) is disposed on an inner vertical wall of the other side of the test box (1), wherein the reflection unit (5) corresponds to the ultraviolet irradiation lamp (4); The test box (1) has two sets of lifting and adjusting mechanisms (6) built in, one set of the lifting and adjusting mechanisms (6) being connected to the ultraviolet irradiation lamp (4), and the other set of the lifting and adjusting mechanisms (6) being connected to the reflection unit (5); The lifting adjustment mechanism (6) comprises a lifting screw (61), wherein the lifting screws (61) are symmetrically arranged vertically on the left and right side walls inside the test box (1), and each of the lifting screws (61) is provided with two support sliders (62) via a screw nut sleeve, a guide strip (63) is connected between the upper and lower support sliders (62), and the guide strip (63) is slidably arranged in a sliding guide groove vertically opened on the left and right side walls of the test box (1), a support strip (64) is horizontally arranged on the outer side surface of one of the support sliders (62), and the end of the support strip (64) is connected to a mounting plate (65) via a swing adjustment component (7), and an ultraviolet irradiation lamp (4) and a reflection unit (5) are respectively mounted on the symmetrical mounting plate (65); The swing adjustment assembly (7) comprises an articulated lug (71), at least four articulated lugs (71) are arranged on the mounting plate (65), and every two articulated lugs (71) are arranged in a front-to-rear mirror image, and an articulated shaft (72) is rotatably connected between every two articulated lugs (71) via a rotating sleeve, the articulated shaft (72) located at the top is placed on the supporting strip (64), the articulated shaft (72) located at the bottom is connected to one end of a first swing plate (73), and an articulated shaft (72) is arranged on the side of the supporting slider (62) located at the bottom, and the articulated shaft (72) and the second swing plate (74) are connected together. The groove walls on both sides of the U-shaped avoidance groove (741) opened at the end are rotatably connected, and the other end of the first swing plate (73) is rotatably connected to the U-shaped avoidance groove (741) opened at the other end of the second swing plate (74) via a connecting shaft (75); a conical soft rod (76) is arranged on the second swing plate (74); an electric telescopic rod (77) is vertically arranged on the support strip (64); and an output rod of the electric telescopic rod (77) is connected to the conical soft rod (76); and a tight stop assembly (8) is arranged on the support strip (64) corresponding to the mounting plate (65) on which the reflective unit (5) is mounted.

2. The UV aging test device for automobile surface protective coating according to claim 1 is characterized in that: The lifting and lowering adjustment mechanism (6) further comprises an inclined baffle (66), a connecting soft plate (67) and a vertical support block (68); the upper surface of the mounting plate (65) is provided with an inclined baffle (66) inclined upward, and the inclined baffle (66) is designed in sections, and the sections of the inclined baffle (66) are connected by connecting soft plates (67); the inclined baffle (66) is sleeved with a lifting screw (61) that rotates; and the lower surface of the end of the inclined baffle (66) away from the mounting plate (65) is connected to the guide strip (63) by a vertical support block (68).

3. The UV aging test device for automobile surface protective coating according to claim 2 is characterized in that: The pressing limit assembly (8) comprises a sliding block (81), a limit slot (641) is horizontally provided on the support strip (64) on which the reflection unit (5) is installed, and a sliding block (81) is slidably inserted in the limit slot (641), one end of the sliding block (81) contacts the mounting plate (65), and the other end is connected to the slot wall of the limit slot (641) via a return spring (82), the thickness of the sliding block (81) is greater than the slot depth of the limit slot (641), a sliding rod (83) is vertically slidably inserted in the support strip (64), the top end of the sliding rod (83) is connected to a lifting block (84) provided on the top surface of the support strip (64), and the lower surface of the lifting block (84) is insulated from the top surface of the support strip (64) via an insulated electromagnetic suction cup. The metal layer arranged on the edge can be detachably adsorbed and connected, the lower surface of the end of the lifting block (84) close to the mounting plate (65) is provided with a locking blind groove (841), and the locking blind groove (841) is vertically locked to the sliding block (81), and the right groove bottom of the locking blind groove (841) is in contact with the right end of the sliding block (81), and a return spring (82) is sleeved on the sliding rod (83) located on the bottom surface of the supporting strip (64), and a limiting ring (85) is fixed on the sliding rod (83), and the limiting ring (85) is connected to the bottom of the return spring (82), and the top of the return spring (82) is connected to the bottom surface of the supporting strip (64), and a push block (86) is provided on the output rod of the electric telescopic rod (77), and the push block (86) is in sliding contact with the bottom end of the sliding rod (83).

4. The UV aging test device for automobile surface protective coating according to claim 1 is characterized in that: Storage boxes (9) are fixed to the bottom of both sides of the test box (1), and the storage boxes (9) are located on both sides of the sample table (2). A water accumulation cavity (91) is formed between the side walls of the storage box (9) and the side walls of the sample table (2). The box walls of the storage box (9) and the test box (1) are vertically provided with air avoidance grooves, and the air avoidance grooves are aligned with the sliding guide grooves.

5. The UV aging test device for automobile surface protective coating according to claim 4 is characterized in that: The storage box (9) is provided with a limit guide groove (92) on the inner wall surface close to the sample table (2), and a sealing guide plate (93) is obliquely arranged in the storage box (9), and one end of the sealing guide plate (93) is slidably arranged in the limit guide groove (92) through a limit guide strip (94), and the sealing guide plate (93) is slidably sleeved on the lifting screw (61), and a guide sleeve (95) is fixed on the lower surface of the sleeve joint between the sealing guide plate (93) and the lifting screw (61), and the bottom of the guide sleeve (95) is connected to the bottom of the storage box (9) through a support spring (96).

6. The UV aging test device for automobile surface protective coating according to claim 1 is characterized in that: The reflection unit (5) is one of a metal reflector, a reflective mirror or reflective glass.

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