Plastic performance test box based on corrosion-resistant gradient test

Abstract

The invention relates to the technical field of plastic testing, in particular to a plastic performance test box based on a corrosion-resistant gradient test. Comprising a test box and a box door hinged to the test box, supports used for supporting plastic rods are symmetrically arranged in the test box, a collection box is arranged between cameras on the two sides, a stepped liquid supply device is arranged on the inner wall of the test box and communicated with an air bag, and a hydraulic rod used for extruding the air bag is arranged on the inner wall of the test box. And a power part arranged on the opposite side of the hydraulic rod is moved. Under the rotation of the driven gear ring, the driven gear ring drives the plastic rod to rotate, the sprayed corrosive liquid is matched to cover the surface of the turned plastic rod, and the corrosion resistance of the plastic rod is comprehensively evaluated by gradually improving the sprayed corrosion resistance concentration, so that the covering uniformity of the corrosive liquid is improved, and the service life of the plastic rod is prolonged. And the consistency and comparability of test results are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic testing, and in particular to a plastic performance testing box based on corrosion resistance gradient testing. Background Art

[0002] Corrosion testers are mainly used for corrosion testing in the electronics and electrical industry, university quality inspection institutes, aerospace and other units. They are suitable for corrosion testing of parts, electronic hardware components, protective layers of metal materials and industrial products. Some plastic product connectors have some metal parts and need to be tested with a corrosion resistance tester.

[0003] Different plastic resins have different chemical stabilities. Corrosion resistance testing can determine how the finished plastic product performs in different chemicals, solvents or liquids. This is very important for choosing the right material to suit a specific working environment, such as chemical pipes, storage tanks, equipment parts, etc.

[0004] When testing the corrosion resistance of plastics, strong acid or alkaline liquid is usually used. The plastic rod is first fixed, and then the corrosion resistance is tested by spraying it on the plastic product. However, since the plastic rod is fixed, when testing the plastic rod, if the method of directly spraying it is adopted, part of the surface of the plastic rod will be in contact with the corrosive liquid, but the back of the plastic rod will be covered with very little corrosive liquid. In this way, when observing, the corrosion degree of different positions is inconsistent, which is easy to affect the judgment of the tester. In addition, each test can only test the corrosion degree of the specified concentration of corrosive liquid on the plastic rod, and it is impossible to form a gradient test during the test process, which affects the comparison. Summary of the invention

[0005] The purpose of the present invention is to provide a plastic performance test box based on corrosion resistance gradient test to solve the problems raised in the above-mentioned background technology, aiming to improve the uniformity of corrosion liquid coverage and ensure the consistency and comparability of test results.

[0006] To achieve the above-mentioned purpose, the purpose of the present invention is to provide a plastic performance test box based on corrosion resistance gradient testing, including a test box and a box door hinged to the test box, wherein brackets for supporting plastic rods are symmetrically arranged inside the test box, and a collection box is arranged between the cameras on both sides. A step liquid supply device is arranged on the inner wall of the test box, and the step liquid supply device is connected to an air bag. A hydraulic rod for squeezing the air bag is arranged on the inner wall of the test box, and the hydraulic rod is used to move a power part arranged on the opposite side of the hydraulic rod, and the power part is used to move a support frame arranged on the bracket, and a camera is arranged on one side of the support frame. When the support frame moves, it pushes a flip part arranged at the end of the support frame to rotate, and the flip part is used to drive the plastic rod to rotate, so as to realize that the surface of the plastic rod at different angles is in contact with the corrosive liquid sprayed by the step liquid supply device.

[0007] As a further improvement of the present technical solution, the stepped liquid supply device includes a liquid storage box, a pump body and a plurality of spray tubes. A plurality of partitions are arranged inside the liquid storage box, and the partitions divide the interior of the liquid storage box into a plurality of chambers for storing corrosive liquids of different concentrations, and each chamber corresponds to one of the pump bodies. The plurality of chambers are gathered together and connected to the airbag, and the airbag and the plurality of spray tubes are connected by an infusion tube.

[0008] As a further improvement of the present technical solution, the power unit includes a rack and a push rod, the end of the rack close to the airbag is fixedly connected to the push rod, the other end of the rack is slidably connected to an auxiliary rod, the auxiliary rod is provided with a first return spring that resists the rack, the end of the auxiliary rod is fixedly connected to the outer shell, the push rod is slidably connected to the outer shell, and the outer shell is fixedly connected to the bracket.

[0009] As a further improvement of the present technical solution, the power unit also includes a gear and a lower lever, the gear is rotatably connected to the outer shell, and the gear is meshed with the rack, the gear is coaxially connected to the lower lever, the end of the lower lever is fixedly connected to a vertical rod, the vertical rod is slidably connected to a bar ring, the bar ring is fixedly connected to a support frame, a slider is provided at the bottom of the support frame, the slider is slidably connected to a slide groove opened in the bracket, and multiple spray tubes pass through the support frame.

[0010] As a further improvement of the present technical solution, the flipping part includes an active gear ring and a driven gear ring, and both the active gear ring and the driven gear ring are provided with staggered arc grooves. Under normal conditions, the active gear ring and the driven gear ring cooperate with each other, the active gear ring rotates forward to drive the driven gear ring to rotate synchronously, and the active gear ring reverses to generate sliding between it and the driven gear ring.

[0011] As a further improvement of the technical solution, the outer ring of the active gear ring is fixedly connected to an auxiliary plate, the auxiliary plate is threadedly fitted with a lead screw, the frame plate fixedly connected to the lead screw is connected to the bracket, and the lead screw is slidably connected to a stabilizing rod, the return spring on the stabilizing rod is respectively against the lead screw and the driven gear ring, and the end of the stabilizing rod is fixedly connected to the driven gear ring.

[0012] As a further improvement of the present technical solution, a sleeve is sleeved on the spray tube, and each of the sleeves is fixedly connected to support plates on both sides, the bottom of the support plate is fixedly connected to the inner tube of the telescopic rod, the outer tube of the telescopic rod is fixedly connected to the support frame, and a supporting spring is sleeved on the telescopic rod, and a frame rod is fixedly connected to the sleeve, and an arc block is provided at the end of the frame rod.

[0013] As a further improvement of the technical solution, the upper part of the lower lever is connected to the upper lever through a speed-increasing gear, the end of the upper lever is fixedly connected to the bent rod, and the top end of the bent rod is slidably connected to the arc block.

[0014] As a further improvement of the technical solution, a plurality of air holes are provided on the inner wall of the sleeve, and the plurality of sleeves are connected to a fan arranged on the inner wall of the test box, and the fan is connected to a filter.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the plastic performance test box based on the corrosion resistance gradient test, the driven gear ring drives the plastic rod to rotate under the rotation of the driven gear ring, and the sprayed corrosion liquid covers the surface of the plastic rod after it is turned over. By gradually increasing the concentration of the sprayed corrosion resistance, it is helpful to comprehensively evaluate the corrosion resistance of the plastic rod, thereby improving the uniformity of the corrosion liquid coverage and ensuring the consistency and comparability of the test results.

[0016] 2. In the plastic performance test box based on the corrosion resistance gradient test, when the support frame moves to the maximum displacement, the pressure on the airbag is stopped, and under the elastic action of the first return spring, the rack drives the gear to rotate in the reverse direction, so that the vertical rod drives the bar ring to move in the reverse direction, thereby realizing the left and right sliding of the spray tube, which is convenient for ensuring the uniformity of the corrosion liquid spray.

[0017] 3. In the plastic performance test chamber based on the corrosion resistance gradient test, when changing the corrosion liquid that needs to be sprayed with different concentrations, the atomized corrosion liquid is sucked into the filter through the fan to prevent the low-concentration corrosion liquid from diluting the high-concentration corrosion liquid and affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the internal structure of the test box of the present invention; Figure 3 It is a schematic diagram of the structure of the bracket, the collecting box, the supporting frame and the turning part of the present invention; Figure 4 For the present invention Figure 3 A in the figure is a schematic diagram of an enlarged structure; Figure 5 A top view of the connection structure between the liquid storage box and the spray tube of the present invention; Figure 6 A top view of the airbag extrusion ejector structure of the present invention; Figure 7 It is a top view of the exploded structure of the support frame and the active gear ring of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the driving gear ring and the driven gear ring of the present invention; Fig. 9 It is a schematic diagram of the explosion structure of the sleeve and the gear of the present invention; Fig.10 It is a schematic diagram of the fan and sleeve connection structure of the present invention.

[0019] The meaning of each number in the figure is: 100, test box; 101, box door; 102, bracket; 103, collection box; 110, hydraulic rod; 120, camera; 130. Stepped liquid supply device; 131. Liquid storage box; 132. Pump body; 133. Air bag; 134. Spray tube; 140. support frame; 141. strip ring; 142. housing; 150, sleeve; 151, rack rod; 152, support spring; 153, arc block; 160, upper lever; 161, bending lever; 170, fan; 171, filter; 200, power unit; 210, rack; 211, auxiliary rod; 212, first return spring; 220, top rod; 230, gear; 240, lower lever; 241, vertical rod; 300, turning part; 310, driving gear ring; 311, auxiliary plate; 320, driven gear ring; 330, lead screw; 331, stabilizer bar; 332, return spring. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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. Example 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a plastic performance test box based on corrosion resistance gradient test is provided, including a test box 100 and a box door 101 hinged to the test box 100, a bracket 102 for supporting a plastic rod is symmetrically arranged inside the test box 100, a collection box 103 is arranged between the cameras 120 on both sides, a stepped liquid supply device 130 is arranged on the inner wall of the test box 100, and the stepped liquid supply device 130 is connected to an air bag 133, and a hydraulic rod 110 for squeezing the air bag 133 is arranged on the inner wall of the test box 100, and the hydraulic rod 110 is used to make the hydraulic rod 110 relative to the air bag 133. The power unit 200 provided on the side moves, and the power unit 200 is used to move the support frame 140 provided on the bracket 102. A camera 120 is provided on one side of the support frame 140. When the support frame 140 moves, it pushes the flipping unit 300 provided at the end of the support frame 140 to rotate. The flipping unit 300 is used to drive the plastic rod to rotate, so as to achieve contact between the surface of the plastic rod at different angles and the corrosive liquid (such as sulfuric acid) sprayed by the stepped liquid supply device 130, thereby ensuring that the entire surface is fully in contact with the corrosive liquid, so that the corrosion effect is evenly carried out on the entire sample surface.

[0022] It can be seen from this that when the corrosion resistance of the plastic rod is tested, the concentration of the corrosive liquid sprayed by the step liquid supply device 130 changes every time the plastic rod rotates one circle, so that the corrosion resistance of the plastic rod is tested in corrosive liquids of different concentrations, and the changes in the surface of the plastic rod under corrosive liquids of different concentrations are observed in conjunction with the camera 120.

[0023] Therefore, based on the above structure, reference Figure 5The structure of the step liquid supply device 130 is further disclosed. The step liquid supply device 130 includes a liquid storage box 131, a pump body 132 and a plurality of spray tubes 134. The liquid storage box 131 is provided with a plurality of partitions. The partitions divide the liquid storage box 131 into a plurality of chambers for storing corrosive liquids of different concentrations, and each chamber corresponds to a pump body 132. The plurality of chambers are brought together and connected to the airbag 133. The airbag 133 and the plurality of spray tubes 134 are connected by an infusion tube. In this way, during the corrosion resistance gradient test, a low-concentration corrosive liquid is first sprayed onto the plastic rod through the spray tube 134. After the plastic rod is completely covered with the low-concentration corrosive liquid, the corrosion on the plastic rod is observed and recorded through the camera 120. Then, the above steps are repeated to gradually increase the concentration of the sprayed corrosion resistance, which helps to comprehensively evaluate the corrosion resistance of the plastic rod. Thus, the chemical stability and durability of the material can be understood more accurately.

[0024] It should be noted that the airbag 133 and the infusion tube shell for conveying the corrosive liquid are made of fluororubber, because fluororubber has excellent chemical inertness and corrosion resistance and can withstand corrosion from strong acids such as concentrated sulfuric acid.

[0025] Next, in order to recycle the remaining etching liquid and prevent the etching liquid from polluting the interior of the test box 100 , the excess etching liquid can be recycled through the collection box 103 .

[0026] In addition, considering that the sprayed corrosive liquid is in the form of atomization, in order to make the corrosive liquid evenly cover the plastic rod, a hydraulic rod 110 for squeezing the airbag 133 is provided on the inner wall of the test box 100, and with the auxiliary effect of the power unit 200 (the power unit 200 blocks the airbag 133 at this time), the cross-sectional area of ​​the squeezed airbag 133 is reduced, and the flow rate of the corrosive liquid in the infusion tube is increased, so that when the corrosive liquid is sprayed out at the end of the spray tube 134, a uniform atomized corrosive liquid is formed, thereby improving the uniformity of the corrosive liquid coating the plastic rod.

[0027] At the same time, the squeezed airbag 133 pushes the power unit 200 to move to one side. Figure 6The structure of the power unit 200 is disclosed. The power unit 200 includes a rack 210 and a push rod 220. One end of the rack 210 near the airbag 133 is fixedly connected to the push rod 220. The other end of the rack 210 is slidably connected to the auxiliary rod 211. The auxiliary rod 211 is sleeved with a first return spring 212 that abuts against the rack 210. The end of the auxiliary rod 211 is fixedly connected to the housing 142. The push rod 220 is slidably connected to the housing 142, and the housing 142 is fixedly connected to the bracket 102. Under normal conditions, the auxiliary rod 211 is in a released state, and the end of the push rod 220 is in contact with the airbag 133. In this way, when the airbag 133 pushes the push rod 220 to move, so that the rack 210 squeezes the first return spring 212, the elastic potential energy of the first return spring 212 gradually increases, and the reaction force of the push rod 220 on the airbag 133 also increases, that is, the cross section of the airbag 133 is reduced, and the rack 210 moves toward the direction close to the support frame 140.

[0028] Furthermore, because the power unit 200 further includes a gear 230 and a lower lever 240, the gear 230 is rotatably connected to the housing 142, and the gear 230 meshes with the rack 210, the gear 230 is coaxially connected to the lower lever 240, the end of the lower lever 240 is fixedly connected to a vertical rod 241, the vertical rod 241 is slidably connected to a bar ring 141, and the bar ring 141 is fixedly connected to the support frame 140. In this way, when the rack 210 moves toward the support frame 140, the rack 210 drives the gear 230 to rotate counterclockwise, and at the same time, the lower lever 240 and the vertical rod 241 also rotate counterclockwise with the gear 230. In this process, the vertical rod 241 slides in the bar ring 141, and the vertical rod 241 drives the bar ring 141 to move in a direction away from the housing 142 (refer to Figure 6 Then, Figure 6 Based on and combined with Figure 3 and Figure 5 As shown, since the strip ring 141 is fixedly connected to the support frame 140, a slider is provided at the bottom of the support frame 140, and the slider is slidably connected to the slide groove provided in the bracket 102, and the multiple spray tubes 134 pass through the support frame 140, so the support frame 140 and the strip ring 141 move synchronously, and in this process, the support frame 140 moves the multiple spray tubes 134. When the support frame 140 moves to the maximum displacement, the pressure on the airbag 133 is stopped at this time, and under the elastic action of the first return spring 212, the rack 210 drives the gear 230 to rotate in the reverse direction, so that the vertical rod 241 drives the strip ring 141 to move in the reverse direction, thereby realizing the left and right sliding of the spray tube 134, which is convenient for ensuring the uniformity of the corrosion liquid injection.

[0029] It should be noted that the gear 230 mentioned above rotates counterclockwise, please refer to Figure 6 As shown, hereinafter referred to as clockwise and counterclockwise.

[0030] In addition, during the counterclockwise rotation of the gear 230, the support frame 140 also causes the flipping portion 300 to drive the plastic rod to rotate. The specific process is as follows: First, combine Figure 7 and Figure 8 As shown, the structure of the flip part 300 is disclosed. The flip part 300 includes an active gear ring 310 and a driven gear ring 320. Both the active gear ring 310 and the driven gear ring 320 are provided with staggered arc grooves. Under normal conditions, the active gear ring 310 and the driven gear ring 320 cooperate with each other. The active gear ring 310 rotates forward to drive the driven gear ring 320 to rotate synchronously. The active gear ring 310 rotates backward to generate sliding between the active gear ring 310 and the driven gear ring 320. On the other hand, the outer ring of the active gear ring 310 is fixedly connected with an auxiliary plate 311. The auxiliary plate 311 is threadedly matched with a lead screw 330. The frame plate fixedly connected to the lead screw 330 is connected to the bracket 102, and the lead screw 330 is slidably connected to a stabilizing rod 331. The return spring 332 on the stabilizing rod 331 is respectively against the lead screw 330 and the driven gear ring 320. The end of the stabilizing rod 331 is fixedly connected to the driven gear ring 320. Thus, when the support frame 140 pushes the active gear ring 310 to move, the auxiliary plate 311 rotates forwardly under the action of the lead screw 330, and the active gear ring 310 and the driven gear ring 320 match each other under normal conditions, so the driven gear ring 320 rotates synchronously with the active gear ring 310, and the stabilizing rod 331 collapses into the lead screw 330, and during this process, the elastic potential energy of the stabilizing rod 331 increases. Because the plastic rod passes through the active gear ring 310 and is stuck in the driven gear ring 320, the driven gear ring 320 drives the plastic rod to rotate under the rotation of the driven gear ring 320, and the sprayed corrosive liquid covers the surface of the plastic rod after it is turned over, thereby improving the uniformity of the corrosive liquid coverage and ensuring the consistency and comparability of the test results.

[0031] It should be noted that in order to clamp the plastic rod, a rubber block may be provided in the driven gear ring 320 to increase the friction between the plastic rod and the driven gear ring 320 .

[0032] On the contrary, when the support frame 140 no longer pushes the active gear ring 310 to move (i.e., when the support frame 140 moves in the reverse direction), the elastic action of the stabilizing rod 331 pushes the driven gear ring 320 in the reverse direction, and at this time, the auxiliary plate 311 rotates in the reverse direction under the action of the lead screw 330, and sliding occurs between the driven gear ring 320 and the active gear ring 310. The purpose of this is to prevent the plastic rod that has been rotated to a certain angle from rotating in the reverse direction, causing it to return to its initial position, so that the corrosive liquid can only cover a part of the surface of the plastic rod.

[0033] It should be noted that the positive rotation mentioned above is Figure 8 As shown, the direction indicated by arrow b is forward rotation, and the direction indicated by arrow c is reverse rotation.

[0034] In addition, combined Figure 4 , Fig. 9 and Fig.10 As shown, in order to prevent the low-concentration corrosive liquid on the spray tube 134 from dripping onto the plastic rod and affecting the test result when the high-concentration corrosive liquid is sprayed during the process of spraying from low concentration to high concentration. To this end, a sleeve 150 is sleeved on the spray tube 134, and both sides of each sleeve 150 are fixedly connected to support plates, the bottom of the support plate is fixedly connected to the inner tube of the telescopic rod, the outer tube of the telescopic rod is fixedly connected to the support frame 140, and the telescopic rod is sleeved with a support spring 152, and the sleeve 150 is fixedly connected to the frame rod 151, and the end of the frame rod 151 is provided with an arc block 153. On the other hand, the upper lever 160 is connected to the upper part of the lower lever 240 through the speed increasing gear 230, and the end of the upper lever 160 is fixedly connected to the bent rod 161, and the top end of the bent rod 161 is slidably connected to the arc block 153. When the gear 230 rotates counterclockwise, the upper lever 160 rotates at a speed greater than that of the gear 230 under the action of the speed-increasing gear 230. During this process, the top end of the curved rod 161 slides on the inclined surface of the arc block 153, and the curved rod 161 slides from the highest end of the inclined surface to the lowest end, and the sleeve 150 slides upward on the spray tube 134.

[0035] On the contrary, when the gear 230 rotates clockwise, the curved rod 161 slides from the bottom end to the top end of the inclined plane, and the sleeve 150 slides downward. In this process, since the sleeve 150 is sleeved on the spray tube 134, a plurality of air holes are provided on the inner wall of the sleeve 150, and a plurality of sleeves 150 are connected to the fan 170 disposed on the inner wall of the test box 100, and the fan 170 is connected to the filter 171. Therefore, when the etching liquid of different concentrations needs to be sprayed, the atomized etching liquid is sucked into the filter 171 by the fan 170 to prevent the low-concentration etching liquid from diluting the high-concentration etching liquid and affecting the detection result.

[0036] Among them, sodium hydroxide can be used in the filter 171. Sodium hydroxide is an alkaline adsorbent that can be used to neutralize acidic gases. Sodium hydroxide reacts with acidic gases to form salt and water, thereby converting them into a relatively safe form.

[0037] In this way, after each replacement of the corrosive solution with different concentrations, the corrosion degree of the plastic rod is recorded, thereby forming test results with different gradients, thereby optimizing the performance and stability of the material.

[0038] 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 plastic performance test box based on a corrosion resistance gradient test, comprising a test box (100) and a box door (101) hinged to the test box (100), wherein brackets (102) for supporting plastic rods are symmetrically arranged inside the test box (100), and a collection box (103) is arranged between cameras (120) on both sides, wherein: The inner wall of the test box (100) is provided with a stepped liquid supply device (130), the stepped liquid supply device (130) is connected to an air bag (133), the inner wall of the test box (100) is provided with a hydraulic rod (110) for squeezing the air bag (133), the hydraulic rod (110) is used to move a power unit (200) provided on the opposite side of the hydraulic rod (110), the power unit (200) is used to move a support frame (140) provided on the bracket (102), a camera (120) is provided on one side of the support frame (140), and when the support frame (140) moves, it pushes a flipping unit (300) provided at the end of the support frame (140) to rotate, and the flipping unit (300) is used to drive the plastic rod to rotate, so as to achieve contact between the surface of the plastic rod at different angles and the corrosive liquid sprayed by the stepped liquid supply device (130).

2. The plastic performance test box based on corrosion resistance gradient test according to claim 1 is characterized in that: The stepped liquid supply device (130) comprises a liquid storage box (131), a pump body (132), and a plurality of spray tubes (134). A plurality of partitions are arranged inside the liquid storage box (131), and the partitions divide the inside of the liquid storage box (131) into a plurality of chambers for storing corrosive liquids of different concentrations, and each chamber corresponds to one of the pump bodies (132). The plurality of chambers are gathered together and communicate with the airbag (133), and the airbag (133) and the plurality of spray tubes (134) are connected via a liquid infusion tube.

3. The plastic performance test box based on corrosion resistance gradient test according to claim 2 is characterized in that: The power unit (200) comprises a rack (210) and a push rod (220); one end of the rack (210) close to the airbag (133) is fixedly connected to the push rod (220); the other end of the rack (210) is slidably connected to an auxiliary rod (211); a first return spring (212) is sleeved on the auxiliary rod (211) and abuts against the rack (210); an end of the auxiliary rod (211) is fixedly connected to a housing (142); the push rod (220) is slidably connected to the housing (142); and the housing (142) is fixedly connected to the bracket (102).

4. The plastic performance test box based on corrosion resistance gradient test according to claim 3 is characterized in that: The power unit (200) further comprises a gear (230) and a lower lever (240); the gear (230) is rotatably connected to the housing (142), and the gear (230) is meshed with the rack (210); the gear (230) and the lower lever (240) are coaxially connected; the end of the lower lever (240) is fixedly connected to a vertical rod (241); the vertical rod (241) is slidably connected to a strip ring (141); the strip ring (141) is fixedly connected to a support frame (140); a slider is provided at the bottom of the support frame (140); the slider is slidably connected to a slide groove provided in the bracket (102); and a plurality of the spray pipes (134) pass through the support frame (140).

5. The plastic performance test box based on corrosion resistance gradient test according to claim 1 is characterized in that: The flipping part (300) comprises a driving gear ring (310) and a driven gear ring (320), wherein the driving gear ring (310) and the driven gear ring (320) are both provided with staggered arc grooves. Under normal conditions, the driving gear ring (310) and the driven gear ring (320) cooperate with each other, the driving gear ring (310) rotates forward to drive the driven gear ring (320) to rotate synchronously, and the driving gear ring (310) rotates reversely to generate sliding between the driven gear ring (320).

6. The plastic performance test box based on corrosion resistance gradient test according to claim 5 is characterized in that: The outer ring of the active gear ring (310) is fixedly connected to an auxiliary plate (311), the auxiliary plate (311) is threadedly matched with a lead screw (330), the frame plate to which the lead screw (330) is fixedly connected is connected to the bracket (102), and the lead screw (330) is slidably connected to a stabilizing rod (331), a return spring (332) sleeved on the stabilizing rod (331) is respectively abutted against the lead screw (330) and the driven gear ring (320), and the end of the stabilizing rod (331) is fixedly connected to the driven gear ring (320).

7. The plastic performance test box based on corrosion resistance gradient test according to claim 4 is characterized in that: The spray pipe (134) is sleeved with a sleeve (150), and both sides of each sleeve (150) are fixedly connected to support plates, the bottom of the support plate is fixedly connected to the inner tube of the telescopic rod, the outer tube of the telescopic rod is fixedly connected to the support frame (140), and the telescopic rod is sleeved with a support spring (152), and the sleeve (150) is fixedly connected to a frame rod (151), and an arc block (153) is provided at the end of the frame rod (151).

8. The plastic performance test box based on corrosion resistance gradient test according to claim 7 is characterized in that: An upper shifting rod (160) is connected above the lower shifting rod (240) via a speed increasing gear (230); an end of the upper shifting rod (160) is fixedly connected to a curved rod (161); and a top end of the curved rod (161) is slidably connected to an arc block (153).

9. The plastic performance test box based on corrosion resistance gradient test according to claim 7 is characterized in that: The inner wall of the sleeve (150) is provided with a plurality of air holes, and the plurality of sleeves (150) are connected to a fan (170) arranged on the inner wall of the test box (100), and the fan (170) is connected to a filter (171).

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