Equipment for testing yellowing resistance of material

Abstract

The invention belongs to the technical field of material testing equipment, and particularly relates to equipment for testing yellowing resistance of materials, which comprises a machine body, a reaction cavity is arranged in the machine body, a partition frame is fixedly mounted in the reaction cavity, a first groove body and a second groove body are symmetrically mounted in the reaction cavity, and a UVA lamp is fixedly mounted in the first groove body. A UVB lamp is fixedly installed in the second groove body, a second glass plate is fixedly installed in the second groove body, and an electric heating block is embedded in the reaction cavity. According to the equipment for testing the yellowing resistance of the material, by arranging the UVA lamp and the UVB lamp, the flexibility is improved, the wavelength of the UV light source can be conveniently selected to illuminate the material, ultraviolet rays with the two wavelengths of UVA and UVB are considered through the specifically customized UV lamp, the temperature in the reaction cavity is controlled through the electric heating block, and the yellowing resistance of the material is improved. And the yellowing test can be enabled to be closer to the irradiation effect of sunlight, the time schedule is accelerated, and a more real test effect is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of material testing equipment, in particular to a device for testing the yellowing resistance performance of a material. Background Art

[0002] The equipment used to test the yellowing resistance of materials is an instrument specially used to test the yellowing resistance of materials under environmental conditions such as ultraviolet rays, light, and temperature. Yellowing usually refers to the phenomenon that the color of the material surface turns yellow or fades due to light, heat or other environmental factors. This is an important performance indicator for many application fields. The material's yellowing resistance is evaluated by simulating environmental conditions such as sunlight, ultraviolet rays and high temperature. During the test, the material sample will be exposed to these conditions for a certain period of time, and then its color change will be measured by visual observation or colorimetric instruments. It is mainly suitable for the yellowing performance test of various base oils, rubbers, plastics, coatings, wires and cables, etc. According to the phenomenon that light-colored or white products are prone to yellowing under long-term ultraviolet radiation, the ultraviolet irradiation pattern is used to observe the changes in the surface color of the sample within a specified time to determine the degree of discoloration of the sample, thereby determining the material's ability to resist yellowing under ultraviolet radiation.

[0003] A Chinese patent with publication number CN202182858U discloses a test device for composite mandrel light aging test, including a box body and a box cover, wherein a lamp is arranged in the box cover, and a sample rack is arranged in the box body, wherein the sample rack includes a motor, a transmission mechanism and one or more sample clamping and rotating mechanisms arranged side by side on the rack body, wherein each sample clamping and rotating mechanism includes a pair of sample clamping mechanisms and a spur gear arranged on the left and right sides of the box body; each sample clamping mechanism includes a sealing cover, a rubber plug and a central axis. The device can conveniently clamp and rotate the composite mandrel sample, rotate the sample while irradiating it, so that the circumference of the sample can be uniformly and controllably irradiated, ensuring that the performance of the sample can be uniformly attenuated during the light aging test, thereby being closer to the actual situation, improving the reliability of the test, and having a simple structure, convenient and controllable.

[0004] The yellowing resistance test instruments currently on the market have certain limitations in design and function, mainly reflected in the lack of consideration of key factors such as the selection of UV light source wavelength and test temperature control, which leads to too long test time and makes the test results unable to meet the relevant yellowing resistance standards and requirements. Different wavelengths of ultraviolet rays have different effects on the yellowing of materials, especially the different mechanisms of action of UVA and UVB. Lack of sufficient consideration of wavelength may cause the test results to be inconsistent with actual usage, thereby affecting the evaluation of the material.

[0005] To this end, the present invention provides a device for testing the yellowing resistance of materials. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art and solve the technical problem of not fully considering the wavelength of the UV light source for testing, the present invention proposes a device for testing the yellowing resistance of materials.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the device for testing the yellowing resistance of materials described in the present invention comprises a body, a reaction chamber is arranged inside the body, a sealing door is connected to the body through a hinge, a partition frame is fixedly installed inside the reaction chamber, a No. 1 tank body and a No. 2 tank body are symmetrically installed inside the reaction chamber, a UVA lamp is fixedly installed inside the No. 1 tank body, a No. 1 glass plate is fixedly installed on the No. 1 tank body, a UVB lamp is fixedly installed inside the No. 2 tank body, a No. 2 glass plate is fixedly installed inside the No. 2 tank body, an electric heating block is inlaid inside the reaction chamber, a control panel is inlaid on the body, and the control panel is electrically connected to the UVA lamp, the UVB lamp and the electric heating block respectively;

[0008] A driving assembly is arranged inside the partition frame, the driving assembly is fixedly connected to the strip plate, a No. 1 cleaning plate is fixedly installed on the strip plate, and the No. 1 cleaning plate is in contact with the inner wall of the reaction chamber;

[0009] Two groups of support plates are fixedly mounted on the strip plate, hooks are arranged in an array on the support plate, a second cleaning plate is fixedly mounted on the support plate, and a collecting assembly is arranged inside the reaction chamber.

[0010] By adopting the above technical scheme, the UVA and UVB wavelengths of ultraviolet rays are taken into account through a specially customized UV lamp, and the temperature inside the reaction chamber is controlled by an electric heating block, so that the test temperature in the reaction chamber is within the range of 65-100 degrees, which can make the yellowing test closer to the effect of sunlight irradiation, so that the effect of the yellowing resistance test can not only speed up the time progress but also ensure a more realistic test effect, and can effectively shorten the yellowing resistance detection time. According to multiple comparative tests, the yellowing resistance test time to achieve the same effect can be shortened from 6 hours to 3 hours, thereby improving work efficiency.

[0011] Preferably, universal wheels are symmetrically mounted on the bottom of the machine body, and grooves are symmetrically arranged on the partition frame.

[0012] By adopting the above technical solution, the universal wheels can facilitate the movement of the machine body, thereby facilitating the movement to different locations for use.

[0013] Preferably, a guide rod is fixedly installed inside the groove, and the guide rod is located on one side of the groove.

[0014] By adopting the above technical solution, the partition frame provides installation space for the guide rod through the groove.

[0015] Preferably, the driving assembly includes a threaded rod, a driving motor, a connecting plate and a threaded ring, the threaded rod is movably installed inside the partition frame, the driving motor is fixedly installed on the back of the machine body, and one end of the threaded rod is fixedly connected to the output end of the driving motor, the connecting plate is arranged inside the partition frame, and the connecting plate extends out of the partition frame through a groove, the connecting plate is fixedly connected to the strip plate, the threaded ring is fixedly installed inside the connecting plate, and the threaded rod is threadedly connected to the threaded ring, and the driving motor is electrically connected to the control panel.

[0016] By adopting the above technical solution, the driving motor can drive the threaded rod to rotate, and the threaded rod can move the threaded ring when it rotates. The movement of the threaded ring can drive the connecting plate to move, and then the strip plate can be driven to move through the connecting plate.

[0017] Preferably, the connecting plate is provided with a through hole corresponding to the guide rod, and the guide rod is inserted into the through hole.

[0018] By adopting the above technical solution, when the connecting plate moves, the cooperation between the guide rod and the through hole can make the connecting plate move smoothly.

[0019] Preferably, a diversion groove is embedded inside the support plate, and the diversion groove is located above the second cleaning plate, and an array of air jet holes is arranged on the diversion groove.

[0020] By adopting the above technical solution, the support plate provides an installation space for the diverter slot, and the air inside the diverter slot flows to the outside through the jet holes.

[0021] Preferably, racks are symmetrically arranged inside the partition frame, and a frame is embedded inside the connecting plate.

[0022] By adopting the above technical solution, the connecting plate provides installation space for the frame.

[0023] Preferably, an installation groove is provided inside the frame, a limiting ring is provided inside the installation groove, a rotating rod is rotatably installed inside the limiting ring, a gear corresponding to the rack is fixedly installed on the rotating rod, and the gear is meshed with the rack, and a wind power component is provided inside the installation groove.

[0024] By adopting the above technical solution, when the connecting plate moves, the frame will be driven to move, and then the gear will rotate through the cooperation of the rack, and the rotation of the gear will drive the rotating rod to rotate.

[0025] Preferably, the wind power component includes a fan and an impeller, the fan is fixedly arranged inside the mounting groove, and the fan output end is connected with the diversion groove through a pipe, the impeller is arranged inside the fan, and one end of the rotating rod is fixedly connected with the center position of the impeller, an exhaust pipe is installed at the fan input end, a cavity is arranged inside the frame, and one end of the exhaust pipe is connected with the cavity, and a filter plate is fixedly installed inside the cavity.

[0026] By adopting the above technical solution, the rotating rod will drive the impeller to move when it rotates, and then the impeller will make the fan move, and the air inside the cavity will be extracted through the exhaust pipe, which will cause suction to be generated in the cavity. After the air inside the reaction chamber enters the partition frame, it will carry particulate matter to the cavity, and the filter plate will filter and adsorb the particulate matter, thereby achieving the purpose of filtering and purifying the air, effectively preventing the particulate matter from flowing to the outside and reducing the pollution to the surrounding environment. The air will flow into the diversion tank through the pipe, and the air will flow to the partition frame and the inside of the reaction chamber through the jet hole, and the air flow will carry residual impurities to improve the cleanliness.

[0027] Preferably, the collecting component comprises a placement groove and a receiving groove, the placement groove is embedded in the reaction chamber, and the receiving groove is arranged inside the placement groove.

[0028] By adopting the above technical solution, the movement of the two groups of No. 2 cleaning plates will push the impurities on the partition frame and the bottom of the reaction chamber to move, and eventually push the impurities into the storage tank for collection, thereby achieving the purpose of collecting the removed impurities. The storage tank can be disassembled from the placement tank, and the stored impurities can be removed.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The device for testing the yellowing resistance of materials described in the present invention improves flexibility by providing a UVA lamp and a UVB lamp, and is convenient for selecting the wavelength of the UV light source to illuminate the material. The material to be tested is placed inside a reaction chamber, and a sealed door is closed. The UVA lamp, the UVB lamp and the electric heating block are controlled to work through a control panel. Ultraviolet rays of both UVA and UVB wavelengths are taken into account through a specifically customized UV lamp, and the temperature inside the reaction chamber is controlled through an electric heating block, so that the yellowing test can be made closer to the irradiation effect of sunlight, so that the effect of the yellowing resistance test can not only speed up the time progress but also ensure a more realistic test effect, which can effectively shorten the detection time of yellowing resistance and improve the working efficiency of the device for testing the yellowing resistance of materials.

[0031] 2. The device for testing the yellowing resistance of materials described in the present invention is convenient for removing impurities dropped during the test by setting a No. 1 cleaning plate and a No. 2 cleaning plate. The driving motor works to move the threaded ring. The movement of the threaded ring drives the connecting plate to move, and drives the No. 1 cleaning plate and the No. 2 cleaning plate to move. When the No. 1 cleaning plate moves, it fits with the inner wall of the reaction chamber, and then the impurities adsorbed on the No. 1 glass plate and the No. 2 glass plate can be scraped off, thereby improving the cleanliness, and effectively avoiding excessive adsorption on the No. 1 glass plate and the No. 2 glass plate to affect the test effect. When the strip plate moves, it drives the two groups of support plates to move. The upper No. 2 cleaning plate moves to remove the impurities dropped above the partition frame, and the lower No. 2 cleaning plate scrapes off the impurities dropped at the bottom of the reaction chamber. The movement of the two groups of No. 2 cleaning plates will push the impurities at the partition frame and the bottom of the reaction chamber to move, and finally push the impurities to the inside of the storage tank for collection, thereby achieving the purpose of collecting the removed impurities. The storage tank can be disassembled, and then the stored impurities can be removed, and no manual removal is required, reducing labor intensity.

[0032] 3. The device for testing the yellowing resistance of materials described in the present invention can improve the cleaning efficiency by setting the jet holes. When the connecting plate moves, it will drive the frame to move, and then the gear will rotate through the coordination of the rack. The rotation of the gear will drive the rotating rod to rotate. When the rotating rod rotates, it will drive the impeller to move, and then the impeller will move the fan. The air inside the cavity will be extracted through the exhaust pipe, and then suction will be generated in the cavity. After the air inside the reaction chamber enters the partition frame, it will carry particulate matter to flow into the cavity. The filter plate will filter and adsorb the particulate matter, and then the purpose of filtering and purifying the air is achieved, the purpose of air purification is improved, and particulate matter is effectively prevented from flowing to the outside to reduce the pollution to the surrounding environment. At the same time, the fan works to transport the extracted air, and the air will flow into the diverter trough through the pipeline. The air will flow to the partition frame and the inside of the reaction chamber through the jet holes, and then the air flow will carry residual impurities to improve the cleanliness.

[0033] 4. The device for testing the yellowing resistance of materials described in the present invention facilitates automatic loading and unloading of test materials through the arranged hook. To improve work efficiency, when testing the yellowing performance of materials such as rubber, plastic, and wires and cables, they can be hung on the hook, so that the driving motor will drive the threaded rod to rotate, and the threaded rod will move the threaded ring when it rotates. The movement of the threaded ring will drive the connecting plate to move, and then the connecting plate will drive the strip plate to move. The movement of the strip plate drives the support plate to move, which will drive the hook to move, and then the material to be tested will be pulled into the reaction chamber for testing through the hook. After the test, the output end of the driving motor will move in the opposite direction to push the support plate to reset. The reset of the support plate will push the tested material to move outward, thereby achieving the purpose of assisting the loading and unloading of the tested material, improving work efficiency, and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Figure 1 It is a stereoscopic diagram of the device for testing the yellowing resistance of materials according to the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the machine body in the present invention;

[0037] Figure 3 It is a structural schematic diagram of the strip plate in the present invention;

[0038] Figure 4 It is a structural schematic diagram of the partition frame in the present invention;

[0039] Figure 5 It is a structural schematic diagram of the connecting plate in the present invention;

[0040] Figure 6 It is a structural schematic diagram of the support plate in the present invention;

[0041] Figure 7 It is a structural schematic diagram of the framework in the present invention;

[0042] Figure 8 It is a schematic diagram of the structure of the cavity in the present invention;

[0043] Fig. 9 It is a structural schematic diagram of the storage tank in the present invention.

[0044] In the figure: 1, machine body; 2, universal wheel; 3, control panel; 4, reaction chamber; 5, sealing door; 6, electric heating block; 7, partition frame; 8, tank body No. 1; 9, UVA lamp; 10, glass plate No. 1; 11, tank body No. 2; 12, UVB lamp; 13, glass plate No. 2; 14, groove; 15, guide rod; 16, threaded rod; 17, driving motor; 18, connecting plate; 19, threaded ring; 20, Through hole; 21, strip plate; 22, No. 1 cleaning plate; 23, hook; 24, No. 2 cleaning plate; 25, diversion slot; 26, jet hole; 27, rack; 28, frame; 29, mounting slot; 30, limit ring; 31, rotating rod; 32, gear; 33, fan; 34, impeller; 35, exhaust pipe; 36, cavity; 37, filter plate; 38, support plate; 39, placement slot; 40, storage slot. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0046] like Figures 1 to 6As shown, an apparatus for testing the yellowing resistance of materials described in an embodiment of the present invention comprises a body 1, a reaction chamber 4 is arranged inside the body 1, a sealing door 5 is connected to the body 1 by a hinge, a partition frame 7 is fixedly installed inside the reaction chamber 4, a No. 1 tank body 8 and a No. 2 tank body 11 are symmetrically installed inside the reaction chamber 4, a UVA lamp 9 is fixedly installed inside the No. 1 tank body 8, a No. 1 glass plate 10 is fixedly installed on the No. 1 tank body 8, a UVB lamp 12 is fixedly installed inside the No. 2 tank body 11, a No. 2 glass plate 13 is fixedly installed inside the No. 2 tank body 11, an electric heating block 6 is inlaid inside the reaction chamber 4, a control panel 3 is inlaid on the body 1, and the control panel 3 is electrically connected to the UVA lamp 9, the UVB lamp 12 and the electric heating block 6 respectively, and the partition frame 7 is provided with a plurality of electric heating blocks 6, wherein the UVA lamp 9 is provided inside the reaction chamber 4, and the UVB lamp 12 is provided inside the reaction chamber 4. The driving assembly is provided in the part, the driving assembly is fixedly connected to the strip plate 21, the strip plate 21 is fixedly installed with a No. 1 cleaning plate 22, and the No. 1 cleaning plate 22 is in contact with the inner wall of the reaction chamber 4, two groups of support plates 38 are fixedly installed on the strip plate 21, the support plates 38 are arrayed with hooks 23, and the support plates 38 are fixedly installed with a No. 2 cleaning plate 24, and a collecting assembly is provided inside the reaction chamber 4. When the yellowing performance of various base oils, rubbers, plastics, coatings, wires and cables and other materials are tested using the equipment for testing the yellowing resistance of materials, the sealing door 5 is opened, the material to be tested is placed inside the reaction chamber 4, the sealing door 5 is closed, and the UVA lamp 9, the UVB lamp 12 and the electric heating block 6 are controlled to work through the control panel 3, and the UVA lamp 9 distinguishes the wavelength of ultraviolet light The wavelength range of the UV lamp 12 is 315-400nm, and the wavelength range of the UVB lamp 12 is 280-315nm. The specially customized UV lamp takes into account the ultraviolet rays of UVA and UVB wavelengths, and the temperature inside the reaction chamber 4 is controlled by the electric heating block 6, so that the test temperature in the reaction chamber 4 is within the range of 65-100 degrees, which can make the yellowing test closer to the irradiation effect of sunlight, so that the effect of the yellowing resistance test not only speeds up the time progress but also ensures a more realistic test effect, and can effectively shorten the yellowing resistance detection time. According to multiple comparative tests, the yellowing resistance test time to achieve the same effect can be shortened from 6 hours to 3 hours, which improves the work efficiency. When the impurities generated during the test in the reaction chamber 4 are cleared, the drive component moves The strip plate 21 will be driven to move, and when the strip plate 21 moves, it will drive the No. 1 cleaning plate 22 and the No. 2 cleaning plate 24 to move. When the No. 1 cleaning plate 22 moves, it will fit with the inner wall of the reaction chamber 4, and then the impurities adsorbed on the No. 1 glass plate 10 and the No. 2 glass plate 13 can be scraped off, thereby improving the cleanliness and effectively avoiding excessive adsorption on the No. 1 glass plate 10 and the No. 2 glass plate 13 that affects the test effect. At the same time, when the strip plate 21 moves, it will drive the two groups of support plates 38 to move. The upper support plate 38 drives the No. 2 cleaning plate 24 to move to remove the impurities dropped from the top of the partition frame 7, and the No. 2 cleaning plate 24 driven by the lower support plate 38 will scrape off the impurities dropped from the bottom of the reaction chamber 4, and then the dropped impurities can be pushed to the inside of the collection component for collection.This facilitates the collection of debris and impurities that fall during the test, and eliminates the need for manual cleaning, which reduces labor intensity. When testing the yellowing performance of materials such as rubber, plastic, and wires and cables, they can be hung on the hook 23. The driving component moves the strip plate 21, which drives the support plate 38 to move, which drives the hook 23 to move, and then pulls the material to be tested into the reaction chamber 4 for testing. After the test, the driving component moves in the opposite direction, which pushes the support plate 38 to reset. The reset of the support plate 38 pushes the tested material to move outward, thereby achieving the purpose of assisting the loading and unloading of the tested material, improving work efficiency, and reducing labor intensity.

[0047] like Figure 1 As shown, universal wheels 2 are symmetrically installed at the bottom of the body 1, and grooves 14 are symmetrically arranged on the partition frame 7. The universal wheels 2 facilitate the movement of the body 1, and the partition frame 7 provides installation space for the grooves 14.

[0048] like Figure 3 and Figure 4 As shown, a guide rod 15 is fixedly installed inside the groove 14 , and the guide rod 15 is located on one side of the groove 14 , and the partition frame 7 provides an installation space for the guide rod 15 through the groove 14 .

[0049] like Figure 4 As shown, the driving assembly includes a threaded rod 16, a driving motor 17, a connecting plate 18 and a threaded ring 19. The threaded rod 16 is movably installed inside the partition frame 7, the driving motor 17 is fixedly installed on the back of the body 1, and one end of the threaded rod 16 is fixedly connected to the output end of the driving motor 17. The connecting plate 18 is arranged inside the partition frame 7, and the connecting plate 18 extends out of the partition frame 7 through the groove 14. The connecting plate 18 is fixedly connected to the strip plate 21. The threaded ring 19 is fixedly installed inside the connecting plate 18, and the threaded rod 16 is threadedly connected to the threaded ring 19. The driving motor 17 is electrically connected to the control panel 3. When the driving assembly moves, the driving motor 17 works to drive the threaded rod 16 to rotate. When the threaded rod 16 rotates, the threaded ring 19 moves. The movement of the threaded ring 19 drives the connecting plate 18 to move, and then drives the strip plate 21 to move through the connecting plate 18.

[0050] like Figure 4 As shown, a through hole 20 corresponding to the guide rod 15 is provided on the connecting plate 18 and the guide rod 15 is inserted into the through hole 20. When the connecting plate 18 moves, the cooperation between the guide rod 15 and the through hole 20 enables the connecting plate 18 to move smoothly.

[0051] like Figure 3 and Figure 6As shown, a diversion groove 25 is embedded inside the support plate 38, and the diversion groove 25 is located above the second cleaning plate 24. The diversion groove 25 is arrayed with jet holes 26. The support plate 38 provides an installation space for the diversion groove 25. The air inside the diversion groove 25 flows to the outside through the jet holes 26.

[0052] like Figure 4 As shown, racks 27 are symmetrically arranged inside the partition frame 7, and a frame 28 is embedded inside the connecting plate 18. The partition frame 7 provides an installation space for the racks 27, and the connecting plate 18 provides an installation space for the frame 28.

[0053] like Figure 4 , Figure 7 and Figure 8 As shown, a mounting groove 29 is provided inside the frame 28, a limit ring 30 is provided inside the mounting groove 29, a rotating rod 31 is rotatably installed inside the limit ring 30, a gear 32 corresponding to the rack 27 is fixedly installed on the rotating rod 31, and the gear 32 is meshed with the rack 27, a wind power component is provided inside the mounting groove 29, and the frame 28 provides an installation space for the mounting groove 29, when the connecting plate 18 moves, it will drive the frame 28 to move, and then the gear 32 will rotate through the cooperation of the rack 27, and the rotation of the gear 32 will drive the rotating rod 31 to rotate.

[0054] like Figure 7 and Figure 8 As shown, the wind power assembly includes a fan 33 and an impeller 34. The fan 33 is fixedly arranged inside the mounting groove 29, and the output end of the fan 33 is connected to the diverter groove 25 through a pipeline. The impeller 34 is arranged inside the fan 33, and one end of the rotating rod 31 is fixedly connected to the center position of the impeller 34. An exhaust pipe 35 is installed at the input end of the fan 33. A cavity 36 is arranged inside the frame 28, and one end of the exhaust pipe 35 is connected to the cavity 36. A filter plate 37 is fixedly installed inside the cavity 36. When the rotating rod 31 rotates, the impeller 34 is driven to move, and then the impeller 34 causes the fan 33 to move, and the air inside the cavity 36 is exhausted through the exhaust pipe 35. The air in the reaction chamber 4 will enter the partition frame 7, and will carry the particles to the cavity 36. The filter plate 37 will filter and adsorb the particles, thereby achieving the purpose of filtering and purifying the air, improving the purpose of air purification, and effectively preventing the particles from flowing to the outside to reduce the pollution to the surrounding environment. At the same time, the fan 33 works to transport the extracted air, and the air will flow into the diversion slot 25 through the pipeline, and will flow to the partition frame 7 and the inside of the reaction chamber 4 through the jet hole 26, and then the air flow will carry the residual impurities, thereby improving the cleanliness.

[0055] like Figure 2 and Fig. 9As shown, the collecting assembly includes a placing groove 39 and a receiving groove 40. The placing groove 39 is embedded in the reaction chamber 4, and the receiving groove 40 is arranged inside the placing groove 39. The impurities adsorbed on the side of the reaction chamber 4, the No. 1 glass plate 10 and the No. 2 glass plate 13 are scraped off by the No. 1 cleaning plate 22 and dropped on the bottom of the reaction chamber 4. At the same time, the movement of the two groups of No. 2 cleaning plates 24 will push the partition frame 7 and the impurities at the bottom of the reaction chamber 4 to move, and finally push the impurities to the receiving groove 40 for collection, thereby achieving the purpose of collecting the removed impurities. The receiving groove 40 can be disassembled from the inside of the placing groove 39, and then the stored impurities can be removed.

[0056] Working principle: First, when using the equipment for testing the yellowing resistance of materials to test the yellowing resistance of various base oils, rubbers, plastics, coatings, wires and cables, etc., open the sealed door 5, place the material to be tested inside the reaction chamber 4, close the sealed door 5, and control the UVA lamp 9, UVB lamp 12 and electric heating block 6 through the control panel 3. The UVA lamp 9 has an ultraviolet wavelength range of 315-400nm, and the UVB lamp 12 has a wavelength range of 280-315nm. The specially customized UV lamp takes into account both UVA and UVB wavelengths, and the temperature inside the reaction chamber 4 is controlled by the electric heating block 6, so that the test temperature in the reaction chamber 4 is within the range of 65-100 degrees, which can make the yellowing test more effective. The irradiation effect is close to that of sunlight, which speeds up the yellowing resistance test and ensures a more realistic test effect. It can effectively shorten the yellowing resistance test time. According to multiple comparative tests, the yellowing resistance test time to achieve the same effect can be shortened from 6 hours to 3 hours, which improves work efficiency. When testing materials, impurities are prone to fall off. When the impurities generated during the test inside the reaction chamber 4 are removed, the driving motor 17 will drive the threaded rod 16 to rotate, and the threaded rod 16 will rotate to move the threaded ring 19. The movement of the threaded ring 19 will drive the connecting plate 18 to move, and then the strip plate 21 will move through the connecting plate 18. When the strip plate 21 moves, it will drive the first cleaning plate 22 and the second cleaning plate 24 to move. When the No. 1 cleaning plate 22 moves, it fits with the inner wall of the reaction chamber 4, and then the impurities adsorbed on the No. 1 glass plate 10 and the No. 2 glass plate 13 can be scraped off, thereby improving the cleanliness and effectively avoiding excessive adsorption on the No. 1 glass plate 10 and the No. 2 glass plate 13 to affect the test effect. The No. 1 cleaning plate 22 scrapes the impurities adsorbed on the side of the reaction chamber 4, the No. 1 glass plate 10 and the No. 2 glass plate 13, and the impurities will fall on the bottom of the reaction chamber 4. At the same time, when the strip plate 21 moves, it will drive the two groups of support plates 38 to move. The upper support plate 38 drives the No. 2 cleaning plate 24 to move to remove the impurities dropped from the top of the partition frame 7. The No. 2 cleaning plate 24 driven by the lower support plate 38 will scrape off the impurities dropped from the bottom of the reaction chamber 4. The movement of the two groups of No. 2 cleaning plates 24 will push The impurities at the bottom of the partition frame 7 and the reaction chamber 4 move, and eventually the impurities will be pushed into the storage tank 40 for collection, thereby achieving the purpose of collecting the removed impurities. The storage tank 40 can be disassembled from the placement tank 39, and then the stored impurities can be removed without manual removal, which reduces the labor intensity. When testing the yellowing performance of materials such as rubber, plastic, and wires and cables, they can be hung on the hook 23, so that the driving motor 17 will drive the threaded rod 16 to rotate, and the threaded rod 16 will rotate to move the threaded ring 19, and the movement of the threaded ring 19 will drive the connecting plate 18 to move, and then the strip plate 21 will be driven to move through the connecting plate 18, so that the movement of the strip plate 21 drives the support plate 38 to move, which will drive the hook 23 to move.Then, the hook 23 will pull the material to be tested into the reaction chamber 4 for testing. After the test, the output end of the drive motor 17 will move in the opposite direction, which will push the support plate 38 to reset. The reset of the support plate 38 will push the tested material to move outward, thereby achieving the purpose of assisting the loading and unloading of the tested material, improving work efficiency and reducing labor intensity.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for testing the yellowing resistance of materials, characterized in that: The invention comprises a machine body (1), wherein a reaction chamber (4) is arranged inside the machine body (1), a sealing door (5) is connected to the machine body (1) via a hinge, a partition frame (7) is fixedly installed inside the reaction chamber (4), a first tank body (8) and a second tank body (11) are symmetrically installed inside the reaction chamber (4), a UVA lamp (9) is fixedly installed inside the first tank body (8), a first glass plate (10) is fixedly installed on the first tank body (8), a UVB lamp (12) is fixedly installed inside the second tank body (11), a second glass plate (13) is fixedly installed inside the second tank body (11), an electric heating block (6) is inlaid inside the reaction chamber (4), a control panel (3) is inlaid on the machine body (1), and the control panel (3) is electrically connected to the UVA lamp (9), the UVB lamp (12) and the electric heating block (6) respectively; A driving assembly is arranged inside the partition frame (7), the driving assembly is fixedly connected to the strip plate (21), a first cleaning plate (22) is fixedly mounted on the strip plate (21), and the first cleaning plate (22) is in contact with the inner wall of the reaction chamber (4); Two groups of support plates (38) are fixedly mounted on the strip plate (21), hooks (23) are arranged in an array on the support plate (38), a second cleaning plate (24) is fixedly mounted on the support plate (38), and a collecting assembly is arranged inside the reaction chamber (4).

2. The device for testing the yellowing resistance of materials according to claim 1, characterized in that: Universal wheels (2) are symmetrically mounted on the bottom of the machine body (1), and grooves (14) are symmetrically arranged on the partition frame (7).

3. The device for testing the yellowing resistance of materials according to claim 2, characterized in that: A guide rod (15) is fixedly installed inside the groove (14), and the guide rod (15) is located on one side of the groove (14).

4. The device for testing the yellowing resistance of materials according to claim 3, characterized in that: The driving assembly comprises a threaded rod (16), a driving motor (17), a connecting plate (18) and a threaded ring (19); the threaded rod (16) is movably mounted inside the partition frame (7); the driving motor (17) is fixedly mounted on the back of the machine body (1); one end of the threaded rod (16) is fixedly connected to the output end of the driving motor (17); the connecting plate (18) is arranged inside the partition frame (7); the connecting plate (18) extends out of the partition frame (7) through a groove (14); the connecting plate (18) is fixedly connected to the strip plate (21); the threaded ring (19) is fixedly mounted inside the connecting plate (18); the threaded rod (16) is threadedly connected to the threaded ring (19); and the driving motor (17) is electrically connected to the control panel (3).

5. The device for testing the yellowing resistance of materials according to claim 4, characterized in that: The connecting plate (18) is provided with a through hole (20) corresponding to the guide rod (15), and the guide rod (15) is inserted into the through hole (20).

6. The device for testing the yellowing resistance of materials according to claim 1, characterized in that: The support plate (38) is inlaid with a diversion groove (25) inside, and the diversion groove (25) is located above the second cleaning plate (24), and the diversion groove (25) is provided with an array of air injection holes (26).

7. The device for testing the yellowing resistance of materials according to claim 5, characterized in that: The partition frame (7) is symmetrically provided with racks (27) inside, and the connection plate (18) is inlaid with a frame (28) inside.

8. The device for testing the yellowing resistance of materials according to claim 7, characterized in that: The frame (28) is provided with a mounting groove (29) inside, a limit ring (30) is provided inside the mounting groove (29), a rotating rod (31) is rotatably installed inside the limit ring (30), a gear (32) corresponding to the rack (27) is fixedly installed on the rotating rod (31), and the gear (32) is meshed with the rack (27), and a wind power component is provided inside the mounting groove (29).

9. The device for testing the yellowing resistance of materials according to claim 8, characterized in that: The wind power component comprises a fan (33) and an impeller (34); the fan (33) is fixedly arranged inside the mounting groove (29), and the output end of the fan (33) is connected to the diverter groove (25) through a pipeline; the impeller (34) is arranged inside the fan (33), and one end of the rotating rod (31) is fixedly connected to the center position of the impeller (34); an exhaust pipe (35) is installed at the input end of the fan (33); a cavity (36) is arranged inside the frame (28), and one end of the exhaust pipe (35) is connected to the cavity (36); and a filter plate (37) is fixedly installed inside the cavity (36).

10. The device for testing the yellowing resistance of materials according to claim 1, characterized in that: The collecting component comprises a placement groove (39) and a receiving groove (40), wherein the placement groove (39) is embedded in the reaction chamber (4), and the receiving groove (40) is arranged in the placement groove (39).

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