A coating corrosion resistance testing device and testing method

Abstract

The present invention belongs to the technical field of corrosion testing, and discloses a coating corrosion resistance testing device and a testing method, the device includes a storage component, the storage component is installed with a mounting component, the outer wall of the storage component is installed with a placement component, and the outer wall of the storage component is installed with a material taking component. The fourth cylinder pushes the support frame to move, and when the support frame moves, it drives the limit block to slide along the inner wall of the slide hole, and drives multiple second spring pieces to move through the support frame, so that the limit strips on the multiple second spring pieces are respectively inserted into the first card slots on multiple test boards, and the two first cylinders push the fixed frame downward again, and the multiple test boards are respectively pulled out of the fixed frame, and the fourth cylinder drives the support frame to move in the opposite direction, so that the multiple test boards are respectively removed from the top of the box body. This design can facilitate the operator to quickly remove the test board from the fixture, and at the same time facilitate the operator to pull the test board horizontally to slide the test board out of the second spring piece, so as to facilitate the removal of the test board.

Description

Technical Field

[0001] The invention relates to the field of corrosion testing, and more specifically to a coating corrosion resistance testing device and a testing method. Background Art

[0002] The non-stick coatings used in the prior art are mostly nano non-stick coatings. By spraying nano coatings on porcelain, metal surfaces or latex tube surfaces, the rigidity and strength of the coating can be increased. The surface of the nano material with high surface energy can also be modified to have water-repellent and oil-repellent properties, thereby improving the scratch resistance and adhesion of the coating. After the workpiece is sprayed with the coating, its corrosion resistance to external corrosive liquid needs to be tested.

[0003] When testing the corrosion resistance of a coating, the coating needs to be sprayed on a test plate in advance, and then the test plate is immersed in a corrosive solution. The corrosion degree of the coating is observed within a specific period of time, so as to calculate the corrosion resistance of the coating. In order to accurately calculate the corrosion resistance of the coating, multiple test plates need to be immersed in the corrosive solution at the same time. However, in the process of installing the test plate, the existing test device needs to fix the test plate with a clamp. After the fixed plate is immersed in the corrosive solution, it is not convenient for the operator to take out the test plate because the corrosive solution is attached to the surface of the plate. In view of this, we propose a coating corrosion resistance testing device and a testing method. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a coating corrosion resistance testing device and testing method, which can facilitate an operator to quickly remove a test plate from a fixture, and at the same time facilitate an operator to pull the test plate horizontally and slide the test plate off the second spring sheet, thereby facilitating the removal of the test plate.

[0005] The present invention provides a coating corrosion resistance testing device, comprising a storage component, the storage component is installed with a mounting component, the outer wall of the storage component is installed with a placing component, and the outer wall of the storage component is installed with a material taking component;

[0006] The storage assembly includes a box;

[0007] The material taking assembly comprises a support frame, and support legs are fixedly connected to both sides of the support frame, and the two support legs are fixedly connected to the box body, and oblique support plates are fixedly connected to both sides of the support frame, and the ends of the two oblique support plates are fixedly connected to the corresponding support legs;

[0008] The inner wall of the support frame is fixedly connected with a support plate, the inner wall of the support plate is fixedly connected with a fourth cylinder, the output end of the fourth cylinder is fixedly connected with a support frame, both sides of the support frame are fixedly connected with a limit block, both sides of the support frame are provided with a sliding hole, and the ends of the limit block are respectively slidably connected with the inner wall of the sliding hole;

[0009] The inner wall of the support frame is fixedly connected to a plurality of clamping frames, the inner walls of the plurality of clamping frames are fixedly connected to a second elastic sheet, the outer walls of the second elastic sheet are fixedly connected to a limiting strip, and the limiting strip is slidably connected to the inner wall of the first slot.

[0010] Preferably, two support plates are fixedly connected to both sides of the outer wall of the box body, a connecting plate is fixedly connected between two adjacent support plates, the tops of the two connecting plates are fixedly connected to the first cylinders, the output ends of the two first cylinders pass through the connecting plates and extend to below them, and the output ends of the two first cylinders are fixedly connected to pressure blocks.

[0011] Preferably, two fixing plates are fixedly connected to the inner wall of the box body, the outer walls of the two fixing plates are provided with mounting grooves, the inner walls of the two mounting grooves are fixedly connected with sliding rods, the circumferential outer walls of the two sliding rods are sleeved with springs, the inner walls of the two mounting grooves are slidably connected with sliders, the ends of the two sliding rods pass through the sliders and are slidably connected to them, and the ends of the two sliders are fixedly connected with toothed plates.

[0012] Preferably, one end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the inner wall of the fixing plate.

[0013] Preferably, the installation assembly includes a fixed frame, both sides of the fixed frame are fixedly connected to the pressure block, the inner wall of the fixed frame is rotatably connected to two first screws, the two first screw ends both pass through the fixed frame and are rotatably connected thereto, the outer ends of the two first screws are fixedly connected to gears, the two gears are respectively meshed with corresponding tooth plates, and the two first screw ends are fixedly connected to blocks.

[0014] Preferably, a plurality of connection frames are fixedly connected to the inner wall of the fixed frame, a first spring sheet is fixedly connected to the inner walls of the plurality of connection frames, a test board is inserted between two adjacent first spring sheets, and first slots are provided on both sides of the test board.

[0015] Preferably, the placement assembly includes a mounting plate, two support arms are fixedly connected to the bottom of the mounting plate, the ends of the two support arms are respectively fixedly connected to the box body, a second cylinder is fixedly connected to the top of the mounting plate, and a docking plate is fixedly connected to the output end of the second cylinder.

[0016] Preferably, both ends of the docking plate are fixedly connected to a slide plate, and the inner walls of the two slide plates are rotatably connected to a second screw rod, the thread sizes of the two second screw rods and the two first screw rods are the same, the ends of the two second screw rods pass through the slide plate and extend to its outside, the ends of the two second screw rods are provided with a second slot, the inner walls of the two second slots are respectively engaged with the corresponding slots, the inner walls of the two slide plates are slidably connected to a screw block, the ends of the two second screw rods pass through the screw block and are threadedly connected to it, one of the slide plates is fixedly connected to an organic board at the bottom, the top of the machine board is fixedly connected to a motor, the output end of the motor is fixedly connected to one of the second screw rods, the circumferential outer walls of the two second screw rods are fixedly connected to a synchronous wheel, and the two synchronous wheels are connected by a synchronous belt transmission.

[0017] Preferably, the tops of the two screw blocks are fixedly connected with connecting rods, the ends of the two connecting rods are fixedly connected with a top plate, the top of the top plate is fixedly connected with a third cylinder, the output end of the third cylinder passes through the top plate and extends to below it, the output end of the third cylinder is fixedly connected with a pressure plate, and the ends of the two connecting rods pass through the pressure plate and are slidably connected to it.

[0018] Preferably, a testing method for a coating corrosion resistance testing device comprises the following steps:

[0019] S1. Spray the test coating onto a plurality of test plates respectively, insert the plurality of test plates into between two adjacent first spring sheets respectively, and clamp and fix the test plates by the elastic force of the first spring sheets;

[0020] S2, the second cylinder pushes the docking plate to move, and the docking plate drives the two slides to move, and the two slides drive the two second screws to move at the same time, at this time, the second slot at the end of the second screw can be plugged into the block at the end of the first screw;

[0021] S3. The motor drives the two second screws to rotate simultaneously through the synchronous wheel and the synchronous belt, and drives the two first screws to rotate respectively through the two second screws. When the two first screws rotate, they drive the gears to rotate respectively. When the gears rotate, they push the toothed plate to move. At this time, the toothed plate drives the slider to slide along the slide rod. When the gear is engaged with the convex teeth at the top of the toothed plate, the gear continues to rotate. Under the elastic force of the spring, it is ensured that the toothed plate can always be engaged with the gear. When the second screw rotates, it drives the screw block to move, and the screw block drives the pressure plate to move. The screw block moves from the second screw to the first screw, thereby moving the pressure plate to the top of multiple test plates, and the third cylinder pushes the pressure plate to slide downward along the connecting rod, and the pressure plate squeezes the tops of the multiple test plates, so that the lengths of the multiple test plates extending to the bottom of the fixed frame are the same, thereby ensuring that the multiple test plates are immersed in the corrosion solution for the same length and are at the same depth of the corrosion solution at the same time;

[0022] S4, the second cylinder pushes the docking plate to move, and the docking plate drives the two slides to move, and the two slides drive the two second screws to move at the same time, and at this time, the two second screws are respectively detached from the corresponding first screws;

[0023] S5, respectively pushing the pressing block to move by the two first cylinders, driving the fixed frame to move by the pressing block, and driving the multiple test plates to move into the box by the fixed frame, so as to be immersed in the corrosive solution, when the fixed frame moves, the gear at the end of the first screw moves downward along the tooth plate;

[0024] S6. After the test, the two first cylinders respectively drive the fixing frame to move upward, and the multiple test plates are taken out of the corrosive solution. At this time, the gear rolls upward along the tooth plate, thereby ensuring that the block at the end of the first screw can always maintain the state of being separated from the second screw, and ensuring that the second slot at the end of the second screw can be plugged into the block at the end of the first screw;

[0025] S7. The support frame is pushed to move by the fourth cylinder. When the support frame moves, the limit block is driven to slide along the inner wall of the sliding hole. The support frame drives the multiple second spring pieces to move, so that the limit strips on the multiple second spring pieces are respectively inserted into the first slots on the multiple test boards. At this time, the two first cylinders push the fixed frame downward again. At this time, the multiple test boards are respectively pulled out of the fixed frame, and the fourth cylinder drives the support frame to move in the opposite direction, so that the multiple test boards are respectively moved away from the top of the box.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In the present invention, the support frame is pushed to move by the fourth cylinder, and when the support frame moves, the limit block is driven to slide along the inner wall of the sliding hole, and the plurality of second spring pieces are driven to move by the support frame, so that the limit strips on the plurality of second spring pieces are respectively inserted into the first slots on the plurality of test boards. At this time, the two first cylinders push the fixed frame downward again, and at this time, the plurality of test boards are respectively pulled out from the inside of the fixed frame, and the fourth cylinder drives the support frame to move in the opposite direction, so that the plurality of test boards are respectively moved away from the top of the box body. This design can facilitate the operator to quickly remove the test board from the fixture, and at the same time facilitate the operator to pull the test board horizontally to slide the test board out from the second spring piece, thereby facilitating the removal of the test board.

[0028] 2. In the present invention, the motor drives the two second screws to rotate simultaneously through the synchronous wheel and the synchronous belt, and drives the two first screws to rotate respectively through the two second screws. When the two first screws rotate, they drive the gears to rotate respectively. When the gears rotate, they push the toothed plate to move. At this time, the toothed plate drives the slider to slide along the slide rod. When the gear is engaged with the convex teeth at the top of the toothed plate, the gear continues to rotate. Under the elastic force of the spring, it is ensured that the toothed plate can always be engaged with the gear. When the second screw rotates, it drives the screw block to move, and the screw block drives the pressure plate to move. The screw block moves from the second screw to the first screw, thereby moving the pressure plate to the top of multiple test plates, and the third cylinder pushes the pressure plate to slide downward along the connecting rod, and the pressure plate squeezes the tops of the multiple test plates, so that the lengths of the multiple test plates extending to the bottom of the fixed frame are the same, thereby ensuring that the lengths of the multiple test plates immersed in the corrosive solution are the same, and are at the same depth of the corrosive solution at the same time, ensuring the consistency of the test conditions and improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the overall structure of the storage component of the present invention;

[0032] Figure 3 It is a schematic diagram of the installation structure of the tooth plate of the present invention;

[0033] Figure 4 It is a schematic diagram of the overall structure of the installation assembly of the present invention;

[0034] Figure 5 This is a schematic diagram of the installation structure of the first spring piece of the present invention;

[0035] Figure 6 It is a schematic diagram of the overall structure of the placement components of the present invention;

[0036] Figure 7 It is a schematic diagram of the installation structure of the screw block of the present invention;

[0037] Figure 8 It is a schematic diagram of the overall structure of the material taking assembly of the present invention;

[0038] Fig. 9 It is a schematic diagram of the installation structure of the limit strip of the present invention.

[0039] Explanation of the reference numerals in the figure: 1. Storage assembly; 101. Box; 102. Support plate; 103. Connecting plate; 104. First cylinder; 105. Press block; 106. Fixing plate; 107. Mounting slot; 108. Slider; 109. Sliding bar; 110. Spring; 111. Tooth plate; 2. Mounting assembly; 201. Fixing frame; 202. Connecting frame; 203. First spring piece; 204. Test plate; 205. First slot; 206. First screw; 207. Gear; 208. Block; 3. Placement assembly; 301. Mounting plate; 302. Support arm; 3 03, second cylinder; 304, docking plate; 305, slide plate; 306, second screw; 307, second slot; 308, screw block; 309, machine plate; 310, motor; 311, synchronous wheel; 312, top plate; 313, third cylinder; 314, connecting rod; 315, pressing plate; 4, material taking assembly; 401, support frame; 402, support leg; 403, inclined support plate; 404, sliding hole; 405, support plate; 406, fourth cylinder; 407, support frame; 408, limit block; 409, clamping frame; 410, second spring piece; 411, limit strip. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the implementation mode of the present application clearer, the technical solution in the implementation mode of the present application will be clearly and completely described in combination with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is a part of the implementation mode of the present application, not all the implementation modes. Based on the implementation mode in the present application, all other implementation modes obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application. The specific implementation modes of the present invention are described in detail in combination with the drawings in the specification. Embodiment 1:

[0041] like Figure 1-Figure 3 As shown, a coating corrosion resistance testing device includes a storage component 1, which includes a box body 101, two support plates 102 are fixedly connected to both sides of the outer wall of the box body 101, a connecting plate 103 is fixedly connected between two adjacent support plates 102, the tops of the two connecting plates 103 are fixedly connected to the first cylinders 104, the output ends of the two first cylinders 104 pass through the connecting plates 103 and extend to the bottom thereof, and the output ends of the two first cylinders 104 are fixedly connected to the pressure blocks 105.

[0042] Two fixed plates 106 are fixedly connected to the inner wall of the box body 101, and installation grooves 107 are opened on the outer walls of the two fixed plates 106. Slide rods 109 are fixedly connected to the inner walls of the two installation grooves 107. Springs 110 are sleeved on the circumferential outer walls of the two slide rods 109. Slide blocks 108 are slidably connected to the inner walls of the two installation grooves 107. The ends of the two slide rods 109 pass through the slide blocks 108 and are slidably connected to them. The ends of the two slide blocks 108 are fixedly connected to toothed plates 111. One end of the spring 110 is fixedly connected to the slide block 108, and the other end of the spring 110 is fixedly connected to the inner wall of the fixed plate 106.

[0043] The output ends of the two first cylinders 104 penetrate the connecting plate 103 and extend downward, and by controlling the extension and contraction of the cylinders, the lifting and lowering movement of the pressing block 105 can be flexibly realized. This design enables the storage assembly 1 to adjust the position or height of the internal components as needed. Embodiment 2:

[0044] This embodiment provides a coating corrosion resistance testing device, which further includes the following structure based on the first embodiment:

[0045] like Figure 1 , Figure 4 and Figure 5 As shown, the storage component 1 is installed with the installation component 2, and the installation component 2 includes a fixed frame 201, and the two sides of the fixed frame 201 are respectively fixedly connected to the pressure block 105, and the inner wall of the fixed frame 201 is rotatably connected to two first screws 206, and the ends of the two first screws 206 both penetrate the fixed frame 201 and are rotatably connected thereto, and the outer ends of the two first screws 206 are both fixedly connected to gears 207, and the two gears 207 are respectively meshed with corresponding tooth plates 111, and the ends of the two first screws 206 are both fixedly connected to blocks 208.

[0046] The inner wall of the fixed frame 201 is fixedly connected with a plurality of connection frames 202 , the inner walls of the plurality of connection frames 202 are all fixedly connected with first elastic pieces 203 , a test board 204 is inserted between two adjacent first elastic pieces 203 , and first slots 205 are provided on both sides of the test board 204 . Embodiment three:

[0047] This embodiment provides a coating corrosion resistance testing device, which further includes the following structure based on the second embodiment:

[0048] like Figure 1 , Figure 6 and Figure 7As shown, a placement component 3 is installed on the outer wall of the storage component 1, and the placement component 3 includes a mounting plate 301, two support arms 302 are fixedly connected to the bottom of the mounting plate 301, and the ends of the two support arms 302 are respectively fixedly connected to the box body 101, and a second cylinder 303 is fixedly connected to the top of the mounting plate 301, and a docking plate 304 is fixedly connected to the output end of the second cylinder 303.

[0049] Both ends of the docking plate 304 are fixedly connected with a slide plate 305, and the inner walls of the two slide plates 305 are rotatably connected with a second screw rod 306. The thread sizes of the two second screw rods 306 and the two first screw rods 206 are the same. The ends of the two second screw rods 306 penetrate the slide plate 305 and extend to its outside. The ends of the two second screw rods 306 are provided with a second slot 307. The inner walls of the two second slots 307 are respectively engaged with the corresponding blocks 208. The inner walls of the two slide plates 305 are slidably connected with a screw block 308. The ends of the two second screw rods 306 penetrate the screw block 308 and are threadedly connected thereto. The bottom of one of the slide plates 305 is fixedly connected to an organic board 309, and the top of the machine board 309 is fixedly connected to a motor 310. The output end of the motor 310 is fixedly connected to one of the second screw rods 306. The circumferential outer walls of the two second screw rods 306 are fixedly connected to synchronous wheels 311, and the two synchronous wheels 311 are connected by synchronous belt transmission.

[0050] The tops of the two screw blocks 308 are fixedly connected with connecting rods 314, the ends of the two connecting rods 314 are fixedly connected with the top plate 312, the top of the top plate 312 is fixedly connected with the third cylinder 313, the output end of the third cylinder 313 passes through the top plate 312 and extends to the bottom thereof, the output end of the third cylinder 313 is fixedly connected with the pressing plate 315, the ends of the two connecting rods 314 pass through the pressing plate 315 and are slidably connected thereto. Embodiment 4:

[0051] This embodiment provides a coating corrosion resistance testing device, which further includes the following structure based on the third embodiment:

[0052] like Figure 1 , Figure 8 and Fig. 9 As shown, a material picking assembly 4 is installed on the outer wall of the storage assembly 1, and the material picking assembly 4 includes a support frame 401, and support legs 402 are fixedly connected on both sides of the support frame 401, and the two support legs 402 are fixedly connected to the box body 101, and inclined support plates 403 are fixedly connected on both sides of the support frame 401, and the ends of the two inclined support plates 403 are fixedly connected to the corresponding support legs 402.

[0053] The inner wall of the support frame 401 is fixedly connected with a support plate 405, the inner wall of the support plate 405 is fixedly connected with a fourth cylinder 406, the output end of the fourth cylinder 406 is fixedly connected with a support frame 407, both sides of the support frame 407 are fixedly connected with a limit block 408, and both sides of the support frame 401 are provided with sliding holes 404, and the ends of the limit blocks 408 are slidably connected to the inner walls of the sliding holes 404 respectively.

[0054] The inner wall of the support frame 407 is fixedly connected with a plurality of clamp frames 409 , the inner walls of the plurality of clamp frames 409 are fixedly connected with a second elastic sheet 410 , the outer walls of the second elastic sheet 410 are fixedly connected with a limit strip 411 , and the limit strip 411 is slidably connected to the inner wall of the first slot 205 .

[0055] Working principle: spray the test coatings onto multiple test plates 204 respectively, insert the multiple test plates 204 into between two adjacent first spring sheets 203 respectively, and clamp and fix the test plates 204 by the elastic force of the first spring sheets 203;

[0056] The second cylinder 303 pushes the docking plate 304 to move, which in turn drives the two slides 305 to move, and the two slides 305 simultaneously drive the two second screw rods 306 to move. At this time, the second slot 307 at the end of the second screw rod 306 can be plugged into the block 208 at the end of the first screw rod 206.

[0057] The motor 310 drives the two second screw rods 306 to rotate through the synchronous wheel 311 and the synchronous belt at the same time, and drives the two first screw rods 206 to rotate respectively through the two second screw rods 306. When the two first screw rods 206 rotate, they drive the gear 207 to rotate respectively. When the gear 207 rotates, it pushes the toothed plate 111 to move. At this time, the toothed plate 111 drives the slider 108 to slide along the slide bar 109. When the gear 207 meshes with the convex teeth at the top of the toothed plate 111, the gear 207 continues to rotate. Under the elastic force of the spring 110, it is ensured that the toothed plate 111 can always mesh with the gear 207. The second screw rods 306 When rotating, the screw block 308 is driven to move, and the screw block 308 drives the pressure plate 315 to move. The screw block 308 moves from the second screw rod 306 to the first screw rod 206, thereby moving the pressure plate 315 above the multiple test plates 204, and the third cylinder 313 pushes the pressure plate 315 to slide downward along the connecting rod 314, and the pressure plate 315 squeezes the tops of the multiple test plates 204, so that the multiple test plates 204 extend to the bottom of the fixed frame 201 The length is the same, thereby ensuring that the multiple test plates 204 are immersed in the corrosion solution for the same length and are at the same depth of the corrosion solution at the same time.

[0058] The second cylinder 303 pushes the docking plate 304 to move, and drives the two slide plates 305 to move through the docking plate 304, and drives the two second screw rods 306 to move through the two slide plates 305 at the same time. At this time, the two second screw rods 306 are separated from the corresponding first screw rods 206 respectively.

[0059] The two first cylinders 104 push the pressing block 105 to move, the pressing block 105 drives the fixing frame 201 to move, and the fixing frame 201 drives multiple test plates 204 to move into the box body 101 so as to be immersed in the corrosive solution. When the fixing frame 201 moves, the gear 207 at the end of the first screw 206 moves downward along the tooth plate 111.

[0060] After the test, the two first cylinders 104 respectively drive the fixed frame 201 to move upward, and the multiple test plates 204 are taken out of the corrosive solution. At this time, the gear 207 rolls upward along the tooth plate 111, thereby ensuring that the block 208 at the end of the first screw rod 206 can always maintain the state of being disengaged from the second screw rod 306, ensuring that the second slot 307 at the end of the second screw rod 306 can be plugged into the block 208 at the end of the first screw rod 206.

[0061] The fourth cylinder 406 pushes the support frame 407 to move. When the support frame 407 moves, it drives the limit block 408 to slide along the inner wall of the sliding hole 404. The support frame 407 drives the multiple second spring pieces 410 to move, so that the limit bars 411 on the multiple second spring pieces 410 are respectively inserted into the first slots 205 on the multiple test boards 204. At this time, the two first cylinders 104 push the fixed frame 201 to move downward again. At this time, the multiple test boards 204 are respectively pulled out of the fixed frame 201. The fourth cylinder 406 drives the support frame 407 to move in the opposite direction, so that the multiple test boards 204 are respectively removed from the top of the box body 101.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coating corrosion resistance testing device, comprising a storage component (1), characterized in that: The storage component (1) is installed with a mounting component (2), the outer wall of the storage component (1) is installed with a placement component (3), and the outer wall of the storage component (1) is installed with a material taking component (4); The storage assembly (1) comprises a box (101); Two support plates (102) are fixedly connected to both sides of the outer wall of the box body (101); a connecting plate (103) is fixedly connected between two adjacent support plates (102); the tops of the two connecting plates (103) are fixedly connected to the first cylinders (104); the output ends of the two first cylinders (104) pass through the connecting plates (103) and extend to below them; and the output ends of the two first cylinders (104) are fixedly connected to the pressing blocks (105); The inner wall of the box body (101) is fixedly connected to two fixing plates (106), the outer walls of the two fixing plates (106) are provided with mounting grooves (107), the inner walls of the two mounting grooves (107) are fixedly connected to sliding rods (109), the circumferential outer walls of the two sliding rods (109) are sleeved with springs (110), the inner walls of the two mounting grooves (107) are slidably connected to sliding blocks (108), the ends of the two sliding rods (109) pass through the sliding blocks (108) and are slidably connected thereto, and the ends of the two sliding blocks (108) are fixedly connected to toothed plates (111); One end of the spring (110) is fixedly connected to the slider (108), and the other end of the spring (110) is fixedly connected to the inner wall of the fixing plate (106); The mounting assembly (2) comprises a fixed frame (201), both sides of the fixed frame (201) are fixedly connected to the pressing block (105), the inner wall of the fixed frame (201) is rotatably connected to two first screw rods (206), the ends of the two first screw rods (206) both pass through the fixed frame (201) and are rotatably connected thereto, the outer ends of the two first screw rods (206) are fixedly connected to gears (207), the two gears (207) are respectively meshed with corresponding toothed plates (111), and the ends of the two first screw rods (206) are fixedly connected to clamping blocks (208); The inner wall of the fixed frame (201) is fixedly connected to a plurality of connection frames (202), the inner walls of the plurality of connection frames (202) are all fixedly connected to a first elastic sheet (203), a test board (204) is inserted between two adjacent first elastic sheets (203), and first slots (205) are provided on both sides of the test board (204); The material taking assembly (4) comprises a support frame (401), support legs (402) are respectively fixedly connected to both sides of the support frame (401), the two support legs (402) are respectively fixedly connected to the box body (101), and oblique support plates (403) are fixedly connected to both sides of the support frame (401), and the ends of the two oblique support plates (403) are respectively fixedly connected to the corresponding support legs (402); The inner wall of the support frame (401) is fixedly connected to a support plate (405), the inner wall of the support plate (405) is fixedly connected to a fourth cylinder (406), the output end of the fourth cylinder (406) is fixedly connected to a support frame (407), both sides of the support frame (407) are fixedly connected to limit blocks (408), both sides of the support frame (401) are provided with sliding holes (404), and the ends of the limit blocks (408) are respectively slidably connected to the inner walls of the sliding holes (404); The inner wall of the support frame (407) is fixedly connected to a plurality of clamping frames (409), the inner walls of the plurality of clamping frames (409) are fixedly connected to a second elastic sheet (410), the outer walls of the second elastic sheet (410) are fixedly connected to a limit strip (411), and the limit strip (411) is slidably connected to the inner wall of the first clamping slot (205).

2. The coating corrosion resistance testing device according to claim 1, characterized in that: The placement component (3) comprises a mounting plate (301), the bottom of the mounting plate (301) being fixedly connected to two support arms (302), the ends of the two support arms (302) being respectively fixedly connected to the box body (101), the top of the mounting plate (301) being fixedly connected to a second cylinder (303), and the output end of the second cylinder (303) being fixedly connected to a docking plate (304).

3. The coating corrosion resistance testing device according to claim 2, characterized in that: Both ends of the docking plate (304) are fixedly connected to a slide plate (305), the inner walls of the two slide plates (305) are rotatably connected to a second screw rod (306), the thread sizes of the two second screw rods (306) and the two first screw rods (206) are the same, the ends of the two second screw rods (306) pass through the slide plate (305) and extend to the outside thereof, the ends of the two second screw rods (306) are provided with a second slot (307), the inner walls of the two second slots (307) are respectively engaged with the corresponding block (208), and the two slide plates ( The inner wall of each of the slide plates (305) is slidably connected to a screw block (308), the ends of the two second screw rods (306) penetrate the screw block (308) and are threadedly connected thereto, the bottom of one of the slide plates (305) is fixedly connected to an organic plate (309), the top of the organic plate (309) is fixedly connected to a motor (310), the output end of the motor (310) is fixedly connected to one of the second screw rods (306), the circumferential outer walls of the two second screw rods (306) are fixedly connected to synchronous wheels (311), and the two synchronous wheels (311) are connected via a synchronous belt transmission.

4. The coating corrosion resistance testing device according to claim 3, characterized in that: The tops of the two screw blocks (308) are fixedly connected to connecting rods (314), the ends of the two connecting rods (314) are fixedly connected to a top plate (312), the top of the top plate (312) is fixedly connected to a third cylinder (313), the output end of the third cylinder (313) passes through the top plate (312) and extends to below it, the output end of the third cylinder (313) is fixedly connected to a pressing plate (315), and the ends of the two connecting rods (314) pass through the pressing plate (315) and are slidably connected thereto.

5. A test method for a coating corrosion resistance test device, applicable to the coating corrosion resistance test device according to claim 4, characterized in that: The following steps are involved: S1, spraying the test coatings onto a plurality of test plates (204), inserting the plurality of test plates (204) into between two adjacent first elastic sheets (203), and clamping and fixing the test plates (204) by the elastic force of the first elastic sheets (203); S2, the second cylinder (303) pushes the docking plate (304) to move, and the docking plate (304) drives the two slide plates (305) to move, and the two slide plates (305) simultaneously drive the two second screw rods (306) to move, and at this time, the second clamping groove (307) at the end of the second screw rod (306) can be plugged into the clamping block (208) at the end of the first screw rod (206); S3, the motor (310) drives the two second screws (306) to rotate simultaneously through the synchronous wheel (311) and the synchronous belt, and drives the two first screws (206) to rotate respectively through the two second screws (306). When the two first screws (206) rotate, they drive the gears (207) to rotate respectively. When the gears (207) rotate, they push the toothed plate (111) to move. At this time, the toothed plate (111) drives the slider (108) to slide along the slide bar (109). When the gear (207) meshes with the convex teeth at the top of the toothed plate (111), the gear (207) continues to rotate. Under the elastic force of the spring (110), it is ensured that the toothed plate (111) can always mesh with the gear (207). The second screw ( When the second screw rod (306) rotates, the screw block (308) is driven to move, and the pressing plate (315) is driven to move by the screw block (308). The screw block (308) moves from the second screw rod (306) to the first screw rod (206), thereby moving the pressing plate (315) above the plurality of test plates (204). The pressing plate (315) is pushed to slide downward along the connecting rod (314) by the third cylinder (313), and the tops of the plurality of test plates (204) are squeezed by the pressing plate (315), so that the plurality of test plates (204) extend to the bottom of the fixed frame (201) to have the same length, thereby ensuring that the plurality of test plates (204) are immersed in the corrosion solution to have the same length and are located at the same depth in the corrosion solution at the same time; S4, the second cylinder (303) pushes the docking plate (304) to move, and the docking plate (304) drives the two slide plates (305) to move, and the two slide plates (305) simultaneously drive the two second screw rods (306) to move, and at this time, the two second screw rods (306) are respectively detached from the corresponding first screw rods (206); S5. The two first cylinders (104) respectively push the pressing block (105) to move, the pressing block (105) drives the fixed frame (201) to move, and the fixed frame (201) drives the multiple test plates (204) to move into the box body (101) so as to be immersed in the corrosive solution. When the fixed frame (201) moves, the gear (207) at the end of the first screw rod (206) moves downward along the toothed plate (111). S6. After the test, the two first cylinders (104) respectively drive the fixing frame (201) to move upwards, and the plurality of test plates (204) are taken out of the corrosive solution. At this time, the gear (207) rolls upwards along the tooth plate (111), thereby ensuring that the block (208) at the end of the first screw rod (206) can always maintain the state of being separated from the second screw rod (306), and ensuring that the second groove (307) at the end of the second screw rod (306) can be plugged into the block (208) at the end of the first screw rod (206); S7. The support frame (407) is pushed to move by the fourth cylinder (406). When the support frame (407) moves, the limit block (408) is driven to slide along the inner wall of the sliding hole (404). The support frame (407) drives the plurality of second spring sheets (410) to move, so that the limit bars (411) on the plurality of second spring sheets (410) are respectively inserted into the first slots (205) on the plurality of test boards (204). At this time, the two first cylinders (104) push the fixed frame (201) to move downward again. At this time, the plurality of test boards (204) are respectively pulled out of the fixed frame (201). The fourth cylinder (406) drives the support frame (407) to move in the opposite direction, thereby removing the plurality of test boards (204) from above the box body (101).

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