High-temperature aging experiment box for automobile lamp material

Abstract

The invention relates to the technical field of automobile lamp material high-temperature aging detection, in particular to an automobile lamp material high-temperature aging experiment box which comprises a xenon lamp aging box, a horizontal placement frame, a rotary placement frame and an auxiliary unit, the horizontal placement frame and the rotary placement frame are arranged in a xenon lamp aging box body, the auxiliary unit is used in cooperation with the xenon lamp aging box, and a local heating unit is arranged on the rotary placement frame; through cooperation of the xenon lamp aging oven and the local heating unit, heat influence on a vehicle lamp material in four scenes of daytime driving and parking and night driving and parking of a vehicle can be simulated, so that the high-temperature aging experiment of the vehicle lamp material is more suitable for actual conditions, and factors influencing a detection result are reduced; and the auxiliary unit is used for taking out the vehicle lamp material in a sealed state and putting the vehicle lamp material back to the xenon lamp aging oven, so that temperature fluctuation caused by frequent opening of a sealing door is reduced, factors influencing a detection result are further reduced, and the accuracy of various performance detection after the high-temperature aging experiment of the vehicle lamp material is improved.

Description

Technical Field

[0001] This invention relates to the field of high-temperature aging testing technology for automotive lighting materials, specifically a high-temperature aging test chamber for automotive lighting materials. Background Technology

[0002] Automotive headlights are mainly injection molded from plastic materials such as polycarbonate, which have characteristics such as high transparency, impact resistance and lightweight. The working environment of modern automotive headlights is extremely harsh. The headlight materials are not only affected by solar radiation and temperature differences between day and night, but also by the heat generated by the lamp beads and the heat generated by the engine. Over time, this affects the light transmittance, brittleness and durability of the headlight materials.

[0003] Before manufacturing car lights, high-temperature aging tests are required on the materials to simulate the high-temperature environment that car lights face during long-term use. However, although current high-temperature aging chambers can fully cover the temperature tolerance of car light materials, the temperature inside the chamber is uniform, whether it is thermal cycling aging (simulating day and night temperature difference) or constant temperature aging. This cannot simulate the local heating caused by LED lighting and engine operation, resulting in deviations in the testing of various material performance characteristics.

[0004] Secondly, in the early stage of constant temperature aging, the samples need to be taken out for testing at regular intervals. Each time the chamber door is opened and closed, it causes temperature fluctuations, which further increases the factors affecting the test results. Summary of the Invention

[0005] This invention provides a high-temperature aging test chamber for automotive lighting materials to solve the problems of lack of simulation of local heating and aging errors caused by temperature fluctuations due to opening and closing the chamber door in related technologies.

[0006] This invention provides a high-temperature aging test chamber for automotive lamp materials, including a xenon lamp aging chamber, a horizontal placement rack and a rotating placement rack disposed inside the xenon lamp aging chamber, wherein the horizontal placement rack is located above the rotating placement rack, and the rotating placement rack includes a rotating disk intermittently rotatably connected to the bottom of the chamber and a plurality of limiting members fixed on the upper surface of the rotating disk in a circumferentially distributed manner.

[0007] The limiting component includes a concave frame. Each concave frame has a limiting plate fixed on one side of its vertical section, and the limiting plate is close to the center of the rotating disk. The upper end of the vertical section of the concave frame has a receiving groove. A rotating stop is rotatably connected to the receiving groove through a torsion spring and a shaft. A wedge-shaped stop is also slidably provided on the front side of the horizontal section of the concave frame.

[0008] The rotating disk is equipped with a local heating unit at its center. The xenon lamp aging chamber and the local heating unit work together to simulate the thermal effects on the lamp material under four scenarios: driving and parking during the day, driving and parking at night.

[0009] The high-temperature aging test chamber for automotive lamp materials also includes an auxiliary unit used in conjunction with the xenon lamp aging chamber. A rectangular through hole is provided on the sealing door of the xenon lamp aging chamber below the observation window. A flip door panel is rotatably installed at the top of the rectangular through hole. The auxiliary unit includes a rectangular sealing frame with an open rear end. An electric push rod is fixed to the inner front wall of the rectangular sealing frame. A sampling component for taking out the lamp material is fixed to the rear end of the electric push rod.

[0010] When sampling the headlight material on the concave frame, the rectangular sealing frame is inserted into the box from the flip door panel to briefly position and unlock the limiting component. The unlocked headlight material is then picked up and placed using an electric push rod in conjunction with the sampling component.

[0011] In one possible implementation, the horizontal placement rack includes four mounting brackets fixed to the front and rear ends of the inner walls on the left and right sides of the box. The two mounting brackets distributed on the left and right sides have several positioning holes evenly distributed from top to bottom on their opposite sides. A placement partition is provided between the four mounting brackets, and the placement partition is fixed to the positioning holes on the left and right sides by locking components.

[0012] In one possible implementation, the rotating stop includes an annular part fixedly sleeved outside the shaft and two protruding plates integrally formed on the outer wall of the annular part. The included angle between the two protruding plates is greater than 90 degrees and less than 180 degrees. The two ends of the torsion spring are fixed to the shaft and the concave frame, respectively. Under the elastic force of the torsion spring, one of the protruding plates is initially located in front of the limiting plate and cooperates with the limiting plate to limit and clamp the front and rear sides of the vehicle lamp material.

[0013] In one possible implementation, a notch is provided on the front side of the horizontal section of the concave frame, the top of the notch extends to the upper surface of the horizontal section of the concave frame, and a wedge-shaped stop that slides up and down is connected to the notch by a spring, with the inclined surface of the wedge-shaped stop facing forward.

[0014] In one possible implementation, the rectangular sealing frame has an unlocking component at the opening edge for releasing the restriction on the headlight material. The unlocking component includes two L-shaped top blocks that correspond one-to-one with the rotating blocks on the same concave frame. The unlocking component also includes a positioning groove at the rear end of the bottom wall and a wedge-shaped groove at the top of the positioning groove. When the rectangular sealing frame moves backward, the wedge-shaped groove presses against the inclined surface of the wedge-shaped block, causing the wedge-shaped block to move downward, releasing the restriction on the front bottom end of the headlight material. The L-shaped top blocks push the rotating blocks to rotate, causing the convex plate located in front of the limiting plate to gradually move away from the limiting plate, releasing the restriction on the left and right ends of the front side of the headlight material.

[0015] In one possible implementation, a locking plate is fixed to the front side of the horizontal section of the concave frame and below the notch. A spring is also connected between the top rear end of the locking plate and the wedge-shaped stop. When the rectangular sealing frame moves backward, the positioning groove gradually engages with the locking plate to temporarily position the concave frame.

[0016] In one possible implementation, a rotating shaft is fixedly passed through the center of the rotating disk. The local heating unit includes a heat insulation plate fixed to the top of the rotating shaft and a drive plate threaded to the outside of the rotating shaft. The drive plate is located below the heat insulation plate. The upper surface of the drive plate has several circumferentially distributed arc-shaped grooves. One end of the arc-shaped groove is close to the edge of the drive plate, and the other end is close to the center of the drive plate. The upper surface of the heat insulation plate has radial grooves corresponding to the positions of the arc-shaped grooves. The local heating unit also includes several heating elements that are circumferentially evenly distributed and can move synchronously along the radial direction.

[0017] The heating element includes a round rod that slides through a radial groove and a corresponding arc groove. An arc-shaped heating plate is connected to the top of the round rod. A heat-conducting plate is fixedly connected to the outer arc surface of the arc-shaped heating plate. A heat-conducting plate is connected to the side of the heat-conducting plate away from the arc-shaped heating plate.

[0018] In one possible implementation, the limiting plate and the vertical section of the concave frame are both provided with a strip-shaped groove extending from top to bottom on the side near the center of the rotating disk. A protruding strip is elastically connected in the strip-shaped groove. When not subjected to external pressure, the protruding strip protrudes outside the limiting plate and the concave frame. When the heat-conducting plate II moves outward, it only contacts the protruding strip or contacts the protruding strip, the limiting plate and the concave frame.

[0019] In one possible implementation, the sampling element includes an annular seat fixedly fitted onto the telescopic end of the electric push rod. The outer wall of the annular seat is fixed with several circumferentially evenly distributed adhesive groups. Each adhesive group includes two parallel, U-shaped fixing plates, the openings of which face the electric push rod. The fixing plates are fixed to the annular seat. Multiple rotating rods, distributed along a U-shaped trajectory, are rotatably arranged between the two fixing plates. All rotating rods located in the middle section of the fixing plates and on the same straight line are fixedly fitted with rotating rollers. A roll of low-adhesion, substrate-free silicone tape is fixedly fitted onto the rotating rods near the annular seat. The rotating rods away from the annular seat are fixed to the free end of the low-adhesion, substrate-free silicone tape. The rotating rollers contact the non-adhesive side of the low-adhesion, substrate-free silicone tape, and the adhesive side of the low-adhesion, substrate-free silicone tape is taut under the action of the rotating rollers.

[0020] The above-mentioned one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: The present invention, by combining a xenon lamp aging chamber with a local heating unit, can simulate the thermal effects on the lamp material under four scenarios: daytime driving and parking, nighttime driving and parking. This makes the high-temperature aging test of the lamp material more realistic and reduces factors affecting the test results. Furthermore, by using an auxiliary unit to remove the lamp material in a sealed state and put it back into the xenon lamp aging chamber, the temperature fluctuation caused by frequent opening and closing of the seal is reduced, further reducing factors affecting the test results and improving the accuracy of various performance tests after the high-temperature aging test of the lamp material. The use of low-adhesion, substrate-free silicone tape to remove the lamp material avoids scratching the surface of the lamp material and affecting the light transmittance of the lamp material after aging. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a xenon lamp aging chamber.

[0022] Figure 2 This is a three-dimensional structural diagram of the xenon lamp aging chamber with the seal removed.

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the auxiliary unit taking out the sample to be tested.

[0024] Figure 4 This is an exploded view of a horizontally placed rack.

[0025] Figure 5 yes Figure 2 A partial sectional 3D view.

[0026] Figure 6 yes Figure 5 An enlarged schematic diagram of region A in the middle.

[0027] Figure 7 This is a partial cross-sectional view of the xenon lamp aging chamber and auxiliary unit.

[0028] Figure 8 yes Figure 7 Enlarged schematic diagram of region B in the middle.

[0029] Figure 9 This is a top view of the rotating mounting frame and the local heating unit.

[0030] Figure 10 This is an exploded view of the localized heating unit.

[0031] Figure 11 This is a 3D diagram of the auxiliary unit.

[0032] Figure 12 It is a stereoscopic view from another perspective of the auxiliary unit.

[0033] Figure 13This is a 3D view of the adhesive components.

[0034] In the diagram: 1. Xenon lamp aging chamber; 11. Observation window; 12. Flip-up door panel; 2. Horizontal placement rack; 21. Mounting bracket; 22. Placement mesh; 23. Locking element; 3. Rotating placement rack; 31. Rotating disc; 32. Limiting element; 321. Concave frame; 322. Locking plate; 323. Spring; 324. Wedge-shaped stop; 325. Receiving groove; 326. Rotating stop; 327. Limiting plate; 328. Strip groove; 329. Protruding strip; 4. Local heating unit 41. Insulation plate; 42. Drive plate; 43. Heating element; 431. Arc-shaped heating plate; 432. Heat-conducting plate one; 433. Heat-conducting plate two; 434. Round rod; 5. Auxiliary unit; 51. Rectangular sealing frame; 511. L-shaped top block; 512. Positioning groove; 513. Wedge groove; 52. Electric push rod; 53. Sampling element; 531. Annular seat; 532. Fixing plate; 533. Rotating rod; 534. Rotating roller; 535. Low-adhesion substrate-free silicone tape. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Please see Figure 1 , Figure 2 and Figure 3 A high-temperature aging test chamber for automotive lamp materials includes a xenon lamp aging chamber 1 and an auxiliary unit 5 for use in conjunction with the xenon lamp aging chamber 1. A rectangular through hole is provided on the door of the xenon lamp aging chamber 1 and below the observation window 11. A flip door panel 12 is rotatably installed at the top of the rectangular through hole. The vertical flip door panel 12 blocks the rectangular through hole, and the flip door panel 12 and the side wall of the rectangular through hole are sealed by magnetic adsorption.

[0037] Please see Figure 2 and Figure 4The xenon lamp aging chamber 1 is further equipped with a horizontal placement rack 2 and a rotating placement rack 3 inside the chamber. The horizontal placement rack 2 is located above the rotating placement rack 3. The horizontal placement rack 2 includes four mounting brackets 21 fixed to the inner wall of the chamber, located at the front and rear ends of the left and right inner walls of the chamber. Several positioning holes are evenly distributed from top to bottom on the opposite sides of the two left and right mounting brackets 21. A placement mesh 22 is provided between the four mounting brackets 21. The left and right ends of the placement mesh 22 have through holes (not shown in the figure) corresponding to the positions of the positioning holes. The left and right ends of the front side wall of the placement mesh 22 have displacement grooves that run from front to back. The displacement groove is connected to the through hole. A locking element 23 is slidably provided in the displacement groove. The locking element 23 consists of a protrusion that passes through the through hole and a connecting plate connecting the front and rear protrusions. The connecting plate is located in the displacement groove. A lever is connected to the opposite side of the front and rear protrusions. Manually moving the lever causes the protrusion to pass through the through hole and insert into the positioning hole on the mounting bracket 21, thereby completing the locking of the placement mesh 22 with the mounting bracket 21. When it is necessary to adjust the height of the placement mesh 22, the lever is moved in the opposite direction to move the protrusion out of the current positioning hole. Then, the placement mesh 22 is moved up and down until it is adjusted to a suitable height. The lever is moved again to make the protrusion re-enter the through hole and insert into the new positioning hole.

[0038] Please see Figure 2 , Figure 5 , Figure 7 and Figure 8 The rotating placement rack 3 includes a rotating shaft rotatably connected to the bottom of the xenon lamp aging chamber 1 and a rotating disk 31 fixedly sleeved outside the rotating shaft. Six hexagonally distributed limiting members 32 are fixedly installed on the upper surface of the rotating disk 31. Each limiting member 32 includes a concave frame 321, with adjacent concave frames 321 fixedly connected. A limiting plate 327 is fixed to one side of the vertical section of each concave frame 321, with the limiting plate 327 located near the center of the rotating disk 31. A receiving groove 325 is provided near the upper end of the vertical section of the concave frame 321. The vertical sections of two adjacent concave frames 321... The receiving groove 325 is connected to the receiving groove 325. A rotating stop 326 is rotatably connected to the receiving groove 325 through a torsion spring and a shaft. The rotating stop 326 includes an annular part fixedly sleeved on the outside of the shaft and two protruding plates integrally formed on the outer wall of the annular part. The included angle between the two protruding plates is greater than 90 degrees and less than 180 degrees. The two ends of the torsion spring are fixed to the shaft and the concave frame 321 respectively. Under the elastic force of the torsion spring, one of the protruding plates is initially located in front of the limiting plate 327. The rotating stop 326 and the limiting plate 327 cooperate to limit and clamp the front and rear sides of the vehicle lamp material placed in the concave frame 321.

[0039] When the other protruding plate in the rotating block 326 is pushed, the protruding plate located in front of the limiting plate 327 will be driven to rotate and gradually move away from the limiting plate 327 until the limiting on the front side of the headlight material is released.

[0040] It should be noted that the slow rotation of the rotating disk 31 can be achieved through gear transmission. Specifically, the motor can drive the incomplete gear to rotate. The incomplete gear meshes with the teeth on the outer circumference of the rotating disk 31, so that the rotating disk 31 rotates intermittently and each rotation angle is 60 degrees.

[0041] It should also be noted that since a single concave frame 321 is already fixedly connected to the rotating disk 31, two adjacent concave frames 321 do not need to be fixed to each other and only need to contact each other. In addition, the concave frame 321 and the rotating disk 31 are detachable, which makes it easy to install an appropriate number of limiting parts 32 according to actual needs.

[0042] Please see Figure 5 and Figure 6 To increase the front limit of the vertically placed headlight material, a wedge-shaped stop 324 is slidably provided on the front side of the horizontal section of the concave frame 321. A notch is opened on the front side of the horizontal section of the concave frame 321, and the top of the notch extends to the upper surface of the horizontal section of the concave frame 321. The wedge-shaped stop 324, which slides up and down, is connected in the notch by a spring 323. The inclined surface of the wedge-shaped stop 324 faces forward. A locking plate 322 is fixed on the front side of the horizontal section of the concave frame 321 and below the notch. A spring 323 is also connected between the top of the rear end of the locking plate 322 and the wedge-shaped stop 324.

[0043] The triangular limit formed by the rotating blocks 326 on the two vertical sections of the concave frame 321 and the wedge-shaped blocks 324 on the horizontal section together limit the front side of the headlight material. The three limit points are located at the three edges of the headlight material, which increases the stability of the headlight material during rotation.

[0044] Please see Figure 2 , Figure 5 , Figure 9 and Figure 10The upper surface of the rotating disk 31 is also provided with a local heating unit 4. The local heating unit 4 includes a heat insulation plate 41 fixed to the top of the rotating shaft and a drive plate 42 threaded to the outside of the rotating shaft. The drive plate 42 is located below the heat insulation plate 41. The upper surface of the drive plate 42 is provided with six circumferentially distributed arc-shaped grooves. One end of the arc-shaped groove is close to the edge of the drive plate 42, and the other end is close to the center of the drive plate 42. The upper surface of the heat insulation plate 41 is provided with radial grooves corresponding to the positions of the arc-shaped grooves. The local heating unit 4 also includes six circumferentially evenly distributed heating elements 43. The heating element 43 includes a round rod 434 that slides through the radial groove and the corresponding arc-shaped groove. The top end of the round rod 434 is connected to the arc-shaped heating plate 431. The outer arc surface of the arc-shaped heating plate 431 is fixedly connected to a heat-conducting plate 432. The side of the heat-conducting plate 432 away from the arc-shaped heating plate 431 is connected to a heat-conducting plate 433.

[0045] Rotating the drive plate 42 causes the arc-shaped groove to move the round rod 434 along the radial groove of the heat insulation plate 41, thereby causing multiple heat-conducting plates 433 to move outward or inward simultaneously. As the round rod 434 gradually moves outward, it will contact the vertical sections of two adjacent concave frames 321 and the limiting plate 327 on the vertical section. To facilitate the rotation of the drive plate 42, a handle can be fixedly installed at its edge.

[0046] Please see Figure 8 and Figure 9 The limiting plate 327 and the vertical section of the concave frame 321 near the center of the rotating disk 31 are both provided with a strip groove 328 extending from top to bottom. A protruding strip 329 is elastically connected in the strip groove 328. When not subjected to external pressure, the protruding strip 329 protrudes out of the limiting plate 327 and the concave frame 321.

[0047] As the heating element 43 moves outward synchronously, the second heat-conducting plate 433 first contacts the protruding strip 329, and then continues to apply force, compressing the strip 329 and gradually retracting it into the groove 328. Finally, the strip 329 becomes flush with the limiting plate 327 and the outer wall of the concave frame 321, and the second heat-conducting plate 433 contacts the concave frame 321, the limiting plate 327, and the strip 329. The headlight material placed in the concave frame 321 is simultaneously heated locally through heat conduction and heat radiation, simulating the thermal impact of the heat generated during lamp illumination and engine operation on the headlight material.

[0048] Even when the headlights are not turned on during the day, the engine still generates heat when the car is running, which radiates to the headlights. Therefore, the contact area between the heat-conducting plate 433 and the concave bracket 321 and the limiting plate 327 can be changed by altering the outward movement distance of the heat-conducting plate 433. When the heat-conducting plate 433 only contacts the convex strip 329, it simulates the situation where the engine is running and the headlights are not illuminating during the day. When the heat-conducting plate 433 contacts the concave bracket 321, the limiting plate 327, and the convex strip 329, it simulates the situation where the engine is running and the headlights are illuminating at night. In addition, since the xenon lamp aging chamber 1 can perform cold and hot cycle aging experiments, it can also be combined with the above simulation methods to form four simulation scenarios: daytime driving and parking, and nighttime driving and parking.

[0049] When initially placing the vehicle lamp material into the chamber, the sealing door needs to be opened, and a portion of the vehicle lamp material is laid flat on the placement mesh 22. The other portion of the vehicle lamp material is inserted from top to bottom into the corresponding concave frame 321. The vehicle lamp material is held upright and limited by the wedge-shaped stop 324, the rotating stop 326, and the limiting plate 327. Then the sealing door is closed, and the vehicle lamp material is aged at high temperature using the xenon lamp aging chamber 1. During this process, the flip door panel 12 is in a closed state, and the operator can observe the situation inside the chamber through the observation window 11.

[0050] Before the headlight material is placed into the housing, initial values ​​of various properties need to be measured, such as light transmittance, yellowing index, mechanical properties, and dimensional stability. During the initial high-temperature aging stage, the headlight material needs to be removed for performance testing at regular intervals, with the interval between removals gradually increasing. To avoid temperature fluctuations caused by opening the sealing door during removal and placement, an auxiliary unit 5 lifts and flips the door panel 12 to reach inside the housing and remove and place the headlight material on the concave frame 321 (e.g., ...). Figure 1 , Figure 3 and Figure 7 (As shown).

[0051] Please see Figure 7 , Figure 11 , Figure 12 and Figure 13The auxiliary unit 5 includes a rectangular sealing frame 51 with an open rear end. An electric push rod 52 is fixed to the inner front wall of the rectangular sealing frame 51. A sampling component 53 for removing the headlight material is fixed to the rear end of the electric push rod 52. The electric push rod 52 is a high-temperature resistant electric push rod. An unlocking component for releasing the headlight material is provided at the edge of the opening of the rectangular sealing frame 51. The unlocking component includes two L-shaped top blocks 511 corresponding one-to-one with the rotating stops 326 on the same concave frame 321. The L-shaped top blocks 511 are fixed to the rear ends of the left and right side walls of the rectangular sealing frame 51. The unlocking component also includes... The positioning groove 512 is provided at the rear end of the bottom wall. The positioning groove 512 is inserted and cooperates with the locking plate 322 to provide temporary positioning for the concave frame 321. The opening width of the positioning groove 512 gradually decreases from back to front. A wedge groove 513 is provided at the top of the positioning groove 512. The height of the wedge groove 513 gradually decreases from back to front. The wedge groove 513 is provided so that the rear end of the bottom wall of the rectangular sealing frame 51 can smoothly push the slope of the wedge block 324, so that the wedge block 324 compresses the spring 323 after being pressed, until the top of the wedge block 324 is flush with the upper surface of the horizontal section of the concave frame 321.

[0052] Please see Figure 11 and Figure 13 The sampling component 53 includes an annular seat 531 fixedly sleeved on the telescopic end of the electric push rod 52. The outer wall of the annular seat 531 is fixed with several circumferentially evenly distributed adhesive groups. Each adhesive group includes two parallel, U-shaped fixing plates 532. The openings of the fixing plates 532 face the electric push rod 52. The two fixing plates 532 are fixed near one end of the annular seat 531 by a connecting plate, which is fixed to the outer wall of the annular seat 531. Multiple U-shaped tracks are rotatably arranged between the two fixing plates 532. All rotating rods 533 located in the middle section of the fixed plate 532 and on the same straight line are fixedly fitted with rotating rollers 534. The rotating rods 533 near the annular seat 531 are fixedly fitted with a roll of low-adhesion substrate-free silicone tape 535. The rotating rods 533 away from the annular seat 531 are fixed to the free end of the low-adhesion substrate-free silicone tape 535. The rotating rollers 534 are in contact with the non-adhesive side of the low-adhesion substrate-free silicone tape 535. The adhesive side of the low-adhesion substrate-free silicone tape 535 is straightened under the action of the rotating rollers 534.

[0053] It should be noted that both ends of the rotating rods 533, which are in the same straight line, are rotatably connected to the fixing plate 532 through bearings. There is rotational friction between the two ends of the two rotating rods 533 used to fix the low-adhesion substrate-free silicone tape 535 and the fixing plate 532. The friction makes the two rotating rods 533 not easily rotate. When each section of low-adhesion substrate-free silicone tape 535 can no longer be used after its adhesion decreases, the two rotating rods 533 are rotated so that the free end of the low-adhesion substrate-free silicone tape 535 is wound up and a new section is unwound.

[0054] It should also be noted that the two rotating rods 533 that have rotational friction with the fixing plate 532 can be pulled out of the fixing plate 532 to replace the new roll of low-tack substrate-free silicone tape 535.

[0055] When removing the headlight material in the early aging stage, the rectangular sealing frame 51 is aligned with the flip door panel 12 and pushed backward, causing the rectangular sealing frame 51 to lift the flip door panel 12. During the backward movement of the rectangular sealing frame 51, the rotating disk 31 is in a paused movement stage, and the locking plate 322 gradually gets into the positioning groove 512. During the backward movement of the L-shaped top block 511, it will push the rotating stop block 326 to rotate, causing the rotating stop block 326 to gradually move away from the limiting plate 327 until the limitation on the front side of the headlight material is released. At the same time, the wedge groove 513 will squeeze the slope of the wedge stop block 324, causing the wedge stop block 324 to compress the spring 323 after being compressed, until the top of the wedge stop block 324 is flush with the upper surface of the horizontal section of the concave frame 321, and the upper surface of the bottom wall of the rectangular sealing frame 51 is also flush with the top of the wedge stop block 324.

[0056] Then, the electric push rod 52 drives the sampling piece 53 to extend backward. The low-adhesion substrate-free silicone tape 535 is used to pick up the headlight material whose front three-point limit has been released. The electric push rod 52 retracts, moving the headlight material backward into the rectangular sealing frame 51. Then, the rectangular sealing frame 51 is pulled forward until the door panel 12 is flipped to close the rectangular through hole again. The electric push rod 52 moves again towards the opening of the rectangular sealing frame 51 to push out the headlight material. The operator can then remove the headlight material for performance testing.

[0057] Throughout the sampling process, the outer wall of the rectangular sealing frame 51 is in constant contact with the inner wall of the rectangular through hole and the outer wall of the flip door panel 12. To prevent heat from leaking out through the gap during the movement of the rectangular sealing frame 51, a rubber layer can be provided on the outer wall of the rectangular sealing frame 51 to increase the sealing performance.

[0058] It should be noted that when returning the headlight material after performance testing, it is necessary to first adhere the headlight material back to the low-adhesion substrate-free silicone tape 535. If the adhesion of the low-adhesion substrate-free silicone tape 535 is insufficient, a new section of low-adhesion substrate-free silicone tape 535 should be unwound following the aforementioned process. Then, the rectangular sealing frame 51 is aligned with the flip-up door panel 12 and pushed backward, causing the rectangular sealing frame 51 to move into the housing. The unlocking process of the rotating stop 326 and the wedge-shaped stop 324 remains unchanged. Afterward, the electric push rod 52 extends and places the headlight material onto the concave frame 3 through the sampling component 53. On step 21, pull out the rectangular sealing frame 51 forward, and the electric push rod 52 continues to extend, ensuring that the sampling component 53 continuously presses the headlight material, and the headlight material is always in contact with the limiting plate 327. When the rotating block 326 and the wedge block 324 are no longer subjected to external force, the rotating block 326 and the wedge block 324 reset to limit the three points on the front side of the headlight material. The electric push rod 52 shortens and drives the sampling component 53 to move synchronously. The low-adhesion substrate-free silicone tape 535 separates from the headlight material that has been clamped and limited. At this point, the headlight material is put back into the box to continue the aging test.

[0059] After all the aging tests on the vehicle headlight materials are completed, the sealed door is opened and the materials are taken out for various performance tests. The xenon headlight aging chamber 1 is existing technology, and its specific parameter settings and operation process will not be described in detail.

[0060] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0062] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-temperature aging test chamber for automotive lamp materials, comprising a xenon lamp aging chamber, a horizontal placement rack and a rotating placement rack disposed within the xenon lamp aging chamber, characterized in that: It also includes an auxiliary unit used in conjunction with the xenon lamp aging chamber. The rotating placement rack includes a rotating disk that is intermittently rotated at the bottom of the chamber and several limiting components that are fixed on the upper surface of the rotating disk and distributed circumferentially. The limiting component includes a concave frame, and a limiting plate is fixed on one side of the vertical section of each concave frame. The vertical section of the concave frame has a receiving groove, and a rotating stop is rotatably connected in the receiving groove through a torsion spring and a shaft. A wedge-shaped stop is also slidably arranged on the front side of the horizontal section of the concave frame. The rotating stop and the wedge-shaped stop limit the front side of the headlight material, and the limiting plate limits the rear side of the headlight material. The rotating disk is equipped with a local heating unit at its center. The xenon lamp aging chamber and the local heating unit work together to simulate the thermal effects on the lamp material under four scenarios: driving and parking during the day, driving and parking at night. The xenon lamp aging chamber has a flip-up door panel mounted on the sealing door below the observation window. The auxiliary unit includes a rectangular sealing frame with an open rear end. An electric push rod is fixed to the inner front wall of the rectangular sealing frame. A sampling component for taking out the lamp material is fixed to the rear end of the electric push rod. When sampling the headlight material, a rectangular sealing frame is inserted into the box from the flip-up door panel to unlock the headlight material. The electric push rod works with the sampling component to take out the headlight material that is in the sealed state and has been unlocked.

2. The high-temperature aging test chamber for automotive lamp materials according to claim 1, characterized in that: The horizontal placement frame includes four mounting brackets fixed to the front and rear ends of the inner walls on the left and right sides of the box. Several positioning holes are evenly distributed from top to bottom on the opposite sides of the two mounting brackets on the left and right sides. A placement partition is provided between the four mounting brackets. The placement partition is fixed to the positioning holes on the left and right sides by locking components.

3. The high-temperature aging test chamber for automotive lamp materials according to claim 1, characterized in that: The rotating stop includes an annular part fixedly sleeved on the outside of the shaft and two protruding plates integrally formed on the outer wall of the annular part. The included angle between the two protruding plates is greater than 90 degrees and less than 180 degrees. The two ends of the torsion spring are fixed to the shaft and the concave frame respectively. Under the elastic force of the torsion spring, one of the protruding plates is initially located on the front side of the limiting plate and cooperates with the limiting plate to limit and clamp the front and rear sides of the vehicle lamp material.

4. The high-temperature aging test chamber for automotive lamp materials according to claim 3, characterized in that: A notch is provided on the front side of the horizontal section of the concave frame. The top of the notch extends to the upper surface of the horizontal section of the concave frame. A wedge-shaped stop is connected to the notch by a spring and slides up and down. The inclined surface of the wedge-shaped stop faces forward.

5. The high-temperature aging test chamber for automotive lamp materials according to claim 4, characterized in that: The rectangular sealing frame has an unlocking component at the opening edge for releasing the restriction on the headlight material. The unlocking component includes two L-shaped top blocks that correspond one-to-one with the rotating blocks on the same concave frame. The unlocking component also includes a positioning groove at the rear end of the bottom wall and a wedge-shaped groove at the top of the positioning groove. When the rectangular sealing frame moves backward, the wedge-shaped groove presses against the inclined surface of the wedge-shaped block, causing the wedge-shaped block to move downward, releasing the restriction on the front bottom end of the headlight material. The L-shaped top blocks push the rotating blocks to rotate, causing the convex plate located in front of the limiting plate to gradually move away from the limiting plate, releasing the restriction on the left and right ends of the front side of the headlight material.

6. The high-temperature aging test chamber for automotive lamp materials according to claim 5, characterized in that: A locking plate is fixed on the front side of the horizontal section of the concave frame and below the notch. A spring is also connected between the top rear end of the locking plate and the wedge-shaped stop. When the rectangular sealing frame moves backward, the positioning groove gradually engages with the locking plate to temporarily position the concave frame.

7. The high-temperature aging test chamber for automotive lamp materials according to claim 1, characterized in that: The rotating disk has a rotating shaft fixedly passing through its center. The local heating unit includes a heat insulation plate fixed to the top of the rotating shaft and a drive plate threaded to the outside of the rotating shaft. The drive plate is located below the heat insulation plate. The upper surface of the drive plate has several circumferentially distributed arc-shaped grooves. One end of the arc-shaped groove is close to the edge of the drive plate, and the other end is close to the center of the drive plate. The upper surface of the heat insulation plate has radial grooves corresponding to the positions of the arc-shaped grooves. The local heating unit also includes several heating elements that are circumferentially evenly distributed and can move synchronously along the radial direction. The heating element includes a round rod that slides through a radial groove and a corresponding arc groove. An arc-shaped heating plate is connected to the top of the round rod. A heat-conducting plate is fixedly connected to the outer arc surface of the arc-shaped heating plate. A heat-conducting plate is connected to the side of the heat-conducting plate away from the arc-shaped heating plate.

8. The high-temperature aging test chamber for automotive lamp materials according to claim 7, characterized in that: The limiting plate and the vertical section of the concave frame are both provided with a strip-shaped groove extending from top to bottom on the side near the center of the rotating disk. A protruding strip is elastically connected in the strip-shaped groove. When not subjected to external pressure, the protruding strip protrudes outside the limiting plate and the concave frame. When the heat-conducting plate II moves outward, it only contacts the protruding strip or contacts the protruding strip, the limiting plate and the concave frame.

9. The high-temperature aging test chamber for automotive lamp materials according to claim 1, characterized in that: The sampling component includes an annular seat fixedly fitted onto the telescopic end of the electric push rod. Several circumferentially evenly distributed adhesive groups are fixed to the outer wall of the annular seat. Each adhesive group includes two parallel, U-shaped fixing plates with their openings facing the electric push rod. The fixing plates are fixed to the annular seat. Multiple rotating rods distributed along a U-shaped trajectory are rotatably arranged between the two fixing plates. All rotating rods located in the middle section of the fixing plates and on the same straight line are fixedly fitted with rotating rollers. A roll of low-adhesion, substrate-free silicone tape is fixedly fitted onto the rotating rods near the annular seat. The rotating rods away from the annular seat are fixed to the free end of the low-adhesion, substrate-free silicone tape. The rotating rollers contact the non-adhesive side of the low-adhesion, substrate-free silicone tape, and the adhesive side of the low-adhesion, substrate-free silicone tape is taut under the action of the rotating rollers.

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