An ultraviolet rapid aging test chamber for membranes

Abstract

The present invention discloses an ultraviolet rapid aging test chamber for films, which comprises an ultraviolet aging test chamber body and a carrying frame. A box door panel that can be opened and closed is rotatably connected to the box opening of the ultraviolet aging test chamber body. The right side wall of the test sample rack is clamped with a film material body by a sample clamp, and the film material body is fixedly and stably placed through the sample clamp. Winding mechanisms are arranged in the upper and lower storage grooves of the test sample rack respectively, and the upper and lower winding mechanisms are respectively used for winding the upper and lower ends of the film material body to perform tensioning and flattening operations on the film material body. This ultraviolet rapid aging test chamber for films realizes the tensioning and flattening treatment of the film material test samples, ensures the flatness of the light-receiving detection surface of the film material test samples, meets the usage requirements of uniform light reception. In addition, without stopping the machine, it realizes the timed automatic rotation treatment of the positions of the film material test samples during the test, ensuring the accuracy of the test.

Description

Technical Field

[0001] The present invention relates to the technical field related to film detection, and specifically to an ultraviolet rapid aging test chamber for films. Background Art

[0002] Ultraviolet aging test chambers are widely used in the detection of various types of film materials such as agricultural and industrial films, functional protective films, and films for new energy and electronic fields. The necessity of film material detection is self-evident, to ensure the performance of the film material, make the film material meet the usage requirements, and ensure quality and safety;

[0003] An ultraviolet aging test chamber uses fluorescent ultraviolet lamps as light sources to simulate an ultraviolet radiation environment, detects aging phenomena such as color change and embrittlement of film materials under long-term ultraviolet irradiation, and also detects the stability of film materials in an alternating environment of warm and humid or dry heat by combining procedures such as condensation and spraying.

[0004] After searching for the invention patent with the authorization announcement number CN109916806B, it discloses a super ultraviolet light aging test chamber. The key points of its technical solution are including a box body and a material rack. The material rack includes a moving plate and a placement plate. The placement plate includes a main board and a limiting board. The sample to be tested is placed on the main board. There is a metal halide lamp at the top of the test chamber, and it also includes a lifting mechanism to adjust the distance between the material rack and the metal halide lamp through the lifting mechanism.

[0005] Based on the above patent, combined with the existing solutions and the actual use process, there are still some problems with the current ultraviolet rapid aging test chamber for film detection. For example:

[0006] For the placement method of test samples in some existing ultraviolet rapid aging test chambers, it relies on the sample rack inside the chamber to directly place the film test samples. It is the same as the placement method of test samples in the above patent, directly placing the test samples on the main board in the material rack. However, for this type of placement method, it is not easy to fixedly and stably place the film test samples. Due to the thin and light characteristics of the film material itself, this non-fixed placement method is prone to displacement during detection, affecting the detection effect;

[0007] For the placement method of test samples in some other existing ultraviolet rapid aging test chambers, the film test samples are placed in a groove-shaped sample rack, then a test template is placed on top to press the film test samples, and finally a steel ring with elasticity is used to limit the test template. However, for this type of placement method, it is impossible to perform the tensioning operation after the placement of the film test samples, that is, it is impossible to ensure the flatness of the light-receiving detection surface in the film test samples, and it is easy to cause light-receiving differences due to deformation of the film test samples;

[0008] Therefore, we propose an ultraviolet rapid aging test chamber for films to facilitate solving the problems raised above. Summary of the Invention

[0009] The object of the present invention is to provide an ultraviolet rapid aging test chamber for films, so as to solve the problems put forward in the above-mentioned background technology, namely, it is not easy to fixedly and stably place the film test samples, and the tensioning operation after placement cannot be realized, and the flatness of the light-receiving detection surface cannot be guaranteed, thus affecting the detection effect.

[0010] To achieve the above object, the present invention provides the following technical solutions: An ultraviolet rapid aging test chamber for films, comprising:

[0011] An ultraviolet aging test chamber body, at the opening of the ultraviolet aging test chamber body, there is a flip-connected and openable chamber door panel, and on the left side wall of the chamber door panel, there is a externally connected shell whose shell cavity is communicated with the middle cavity of the chamber door panel;

[0012] It further includes:

[0013] A bearing frame, which is fixedly connected to the right side wall of the chamber door panel. In the frame cavity of the bearing frame, test sample racks are arranged at equal intervals. On the right side wall of the test sample rack, a film material body is clamped by a sample clamp plate. And at the connection between the sample clamp plate and the test sample rack, there is a lock block for fixing the sample clamp plate, so as to fixedly and stably place the film material body through the sample clamp plate;

[0014] Among them, in the upper and lower two storage grooves of the test sample rack, winding mechanisms are respectively arranged. The upper and lower two winding mechanisms are respectively used for winding the upper and lower ends of the film material body to perform the tensioning and flattening operation of the film material body.

[0015] Preferably, guide rod parts are fixedly connected to the upper and lower ends of the test sample rack, and the guide rod parts are connected to the guide grooves formed on the middle cavity wall of the bearing frame in a manner of being movably clamped;

[0016] Among them, at the front end of the bearing frame, there is a through slot for taking, placing or rotating the test sample rack, and the right opening of the through slot is blocked by a cover plate clamped on the bearing frame.

[0017] Preferably, lock blocks are slidably connected in the front and rear two empty grooves of the test sample rack, and a first spring is installed at their sliding connection. The end of the transverse block body in the lock block is in an inclined tongue shape, and the inclined tongue end in the lock block is connected to the connecting plate part in the sample clamp plate in a clamping manner.

[0018] Preferably, the winding mechanism includes a winding rod rotatably connected in the storage groove of the test sample rack and a limit seat for braking the winding rod. A first torsion spring for resetting is installed at the rotation connection of the rear section of the winding rod and the test sample rack. The rear end of the winding rod is fixedly connected with a main end cover, and the front end of the winding rod is fixedly connected with a ratchet ring sleeve that rotates synchronously with the winding rod;

[0019] Wherein, both the left and right sides of the rear end of the limit seat are telescopically and slidably connected with ratchet pawl members, and a second spring is installed at the sliding connection of the two, and the claw head end of the ratchet pawl member is connected to the ratchet ring sleeve in a clamping manner.

[0020] Preferably, the rotation directions of the upper and lower winding rods in the test sample holder are opposite, and the end of the film material body is connected to the long groove part of the winding rod in an inserted manner, and the two are wound and connected together.

[0021] Preferably, an annular groove part for unlocking and sliding the limit seat is formed in the annular cavity of the ratchet ring sleeve;

[0022] Wherein, a secondary end cover is rotatably connected to the front end of the limit seat, and the limit seat forms a sliding structure in the front side wall cavity of the receiving groove in the test sample holder, and a third spring is installed at the sliding connection of the two.

[0023] Preferably, a rotating screw rod is rotatably connected in the middle of the housing cavity of the external housing driven by a servo motor fixedly installed on the external housing, a movable seat is slidably connected in the housing cavity of the external housing driven by the rotating screw rod, and the middle part of the movable seat is inserted and threadedly connected with the rotating screw rod;

[0024] Wherein, a pick-and-place frame is telescopically and slidably connected to the movable seat driven by an electric telescopic rod, and the electric telescopic rod is fixedly installed on the left side wall of the movable seat. Claw members for clamping and fixing the convex platform part are rotatably connected to both the upper and lower sides of the right side frame body of the pick-and-place frame, and the convex platform part is integrally arranged at the central position of the left side wall of the test sample holder.

[0025] Preferably, a linkage frame is slidably connected in the right side frame body of the pick-and-place frame driven by a telescopic electromagnet, and the telescopic electromagnet is fixedly installed in the right side frame body of the pick-and-place frame. The transverse frame body of the linkage frame is slidably connected to the "U" - shaped claw body of the claw member by a pin, and the "L" - shaped claw body of the claw member is connected to the convex platform part in a clamping manner.

[0026] Preferably, the test sample holder drives the guide rod part to form a sliding structure in the guide groove. Both the front and rear sections of the guide rod part are telescopically and slidably connected with pin members, and a fourth spring is installed at the sliding connection of the two;

[0027] Wherein, the head part of the pin member is in a hemispherical structure, the hemispherical end of the pin member is connected to the positioning groove part formed in the front section of the guide groove in a clamping manner, and the hemispherical end of the pin member is connected to the sliding groove part formed in the rear section of the guide groove in a sliding manner.

[0028] Preferably, a separation groove part for the rotation of the test sample holder is formed in the left groove wall at the rear end of the guiding groove, and a blocking plate for limiting the guiding rod part is arranged in the separation groove part. The blocking plate forms a flipping structure in the separation groove part, and a second torsion spring for resetting is installed at the flipping connection part between the two.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: for the ultraviolet rapid aging test chamber for films, the tensioning and flattening treatment of the test samples of the film material is realized, the flatness of the light-receiving detection surface of the test samples of the film material is ensured, the use requirement of uniform light reception is met. In addition, without shutting down the machine, the timed automatic rotation treatment of the positions of the test samples of the film material during the test is realized, ensuring the accuracy of the test;

[0030] 1. After the sample clamping plate is placed, the connecting plate part is inserted into the empty groove of the test sample holder and locked through the clamping connection between the locking block part and the connecting plate part in the sample clamping plate. After the sample clamping plate is placed, the plate body presses and clamps the film material body on the right side wall of the test sample holder, realizing the stable placement of the film material body. Two sample openings are formed in the plate body of the sample clamping plate, which is easy to standardize the test position of the film material body and ensure that the test results can be obtained more intuitively;

[0031] Furthermore, the upper and lower ends of the film material body respectively penetrate through the long groove parts of the upper winding rod and the lower winding rod. The winding directions of the upper winding rod and the lower winding rod are set in opposite directions. By operating the two winding rods to rotate and wind in sequence, the upper and lower ends of the film material body are respectively wound, realizing the tensioning and flattening treatment of the film material body, ensuring the flatness of the light-receiving detection surface, avoiding deformation problems during the test, meeting the use requirement of uniform light reception, and ensuring the accuracy of the test;

[0032] Furthermore, after the winding rod rotates and winds, through the clamping action between the pawl part and the ratchet ring sleeve, and in cooperation with the elastic deformation and reset of the first torsion spring, the automatic locking of the winding rod after winding is realized. In addition, by pressing to drive the limit seat to slide, the pawl part and the ratchet ring sleeve are disengaged from the clamping and moved into the ring groove part, and the automatic unwinding treatment of the winding rod is realized by using the elastic deformation and reset of the first torsion spring, ensuring the convenience of operation;

[0033] 2. By gripping the test sample holder with two gripper parts, the picking and placing rack drives the test sample holder at the rearmost end to break away from the bearing frame and move into the plate cavity of the cabinet door panel. The movable seat drives the test sample holder to rotate and move to the foremost end of the bearing frame. The picking and placing rack again drives the test sample holder at the rearmost end to enter the frame cavity of the bearing frame through the through port groove. The movable seat again drives the test sample holder at the rearmost end to push against the other multiple test sample holders and move backward by one unit, rotating the test sample holder at the rearmost end to the foremost position. Without stopping the machine, the timed automatic rotation process of the position of the film material body during the test is realized, changing the relative position between the film material body and the ultraviolet light source simulation component and the temperature and humidity control component in the ultraviolet aging test chamber body, eliminating the irradiation dead angle caused by static placement. Additionally, through the setting of automatic rotation, it avoids direct contact between the operator and the operating ultraviolet light source, ensuring the safety during the test;

[0034] Further, the positioning groove part is opened at the front section of the guiding groove. After the test sample holder rotates to a new position, through the engagement connection between the hemispherical end in the pin part and the positioning groove part, the rotated test sample holder is positioned, and the other multiple test sample holders are limited, preventing the other multiple test sample holders from sliding and displacing randomly in the frame cavity of the bearing frame, ensuring the accuracy of ultraviolet light source radiation. Description of the Drawings

[0035] Figure 1 Schematic structural diagram of Embodiment 1 of the present invention;

[0036] Figure 2 Front view three-dimensional structural diagram of the cabinet door panel of the present invention in the unfolded state;

[0037] Figure 3 Side view three-dimensional structural diagram of the separation of the bearing frame and the cover plate of the present invention;

[0038] Figure 4 Side view sectional three-dimensional structural diagram of the separation of the bearing frame and the test sample holder of the present invention;

[0039] Figure 5 Side view three-dimensional structural diagram of the separation of the test sample holder and the sample clamping plate of the present invention;

[0040] Figure 6 Top view sectional three-dimensional structural diagram of the connection between the test sample holder and the lock block part of the present invention;

[0041] Figure 7 Side view sectional three-dimensional structural diagram of the winding mechanism of the present invention;

[0042] Figure 8 Front view sectional three-dimensional structural diagram of the connection between the film material body and the winding rod of the present invention;

[0043] Figure 9Schematic perspective view of the connection side view section of the limit seat and the ratchet ring sleeve of the present invention;

[0044] Figure 10 Schematic perspective view of the connection side view section of the ratchet ring sleeve and the ratchet pawl member of the present invention;

[0045] Figure 11 Schematic diagram of the structure of the second embodiment of the present invention;

[0046] Figure 12 Schematic perspective view of the connection side view section of the rotation screw rod and the movable seat of the present invention;

[0047] Figure 13 Schematic perspective view of the front view of the connection between the movable seat and the pick-and-place frame of the present invention;

[0048] Figure 14 Schematic perspective view of the front view section of the connection between the pick-and-place frame and the jaw member of the present invention;

[0049] Figure 15 Schematic perspective view of the disassembled front view of the connection between the jaw member and the linkage frame of the present invention;

[0050] Figure 16 Schematic perspective view of the connection side view section of the guide rod portion and the pin member of the present invention;

[0051] Figure 17 Schematic perspective view of the disassembled side view section of the connection between the bearing frame and the blocking plate of the present invention.

[0052] In the figure: 1. Ultraviolet aging test chamber body; 2. Chamber door panel; 201. Outer shell; 3. Bearing frame; 301. Guide groove; 3011. Positioning groove part; 3012. Slide groove part; 3013. Disengagement groove part; 302. Through port groove; 4. Test sample plate rack; 401. Guide rod part; 402. Boss part; 5. Film material body; 6. Test sample clamping plate; 7. Lock block member; 8. Rewinding mechanism; 9. Cover plate; 10. First spring; 11. Rewinding rod; 12. Limit seat; 13. First torsion spring; 14. Main end cover; 15. Ratchet ring sleeve; 1501. Ring groove part; 16. Ratchet pawl member; 17. Second spring; 18. Sub end cover; 19. Third spring; 20. Rotation screw rod; 21. Servo motor; 22. Movable seat; 23. Pick-and-place frame; 24. Electric telescopic rod; 25. Jaw member; 26. Linkage frame; 27. Telescopic electromagnet; 28. Pin member; 29. Fourth spring; 30. Blocking plate; 31. Second torsion spring. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0054] The present invention provides a technical solution: a membrane ultraviolet rapid aging test chamber. When a membrane material test sample is placed, it is not easy to be fixedly and stably placed, and the tensioning operation after placement cannot be realized, that is, the flatness of the light-receiving detection surface cannot be guaranteed. Due to the deformation of the membrane material test sample, the light reception is not uniform, resulting in light reception differences and affecting the detection effect. By using two winding mechanisms 8, upper and lower, to wind the upper and lower ends of the membrane material body 5 respectively, the tensioning and leveling operation of the membrane material body 5 is realized. In addition, through the pressing and clamping of the sample clamping plate 6, the membrane material body 5 is fixedly and stably placed on the test sample plate frame 4.

[0055] This technical solution: Please refer to Figures 1 - 10 , a membrane ultraviolet rapid aging test chamber, including an ultraviolet aging test chamber body 1. In the chamber of the ultraviolet aging test chamber body 1, there are mainly arranged an ultraviolet light source simulation component and a temperature and humidity control component, etc. (wherein both the ultraviolet light source simulation component and the temperature and humidity control component are prior arts and are not described in detail in the accompanying drawings of the specification). A box door panel 2 that can be opened and closed is rotatably connected at the box opening of the ultraviolet aging test chamber body 1. A lock is arranged at the middle position of the upper end of the box door panel 2, and the left side wall of the box door panel 2 is fixedly connected with an external shell 201 whose shell cavity is communicated with the middle cavity of the box door panel 2;

[0056] It further includes a bearing frame 3 fixedly connected to the right side wall of the box door panel 2. In the frame cavity of the bearing frame 3, test sample plate frames 4 are arranged at equal intervals. The right side wall of the test sample plate frame 4 presses and clamps a membrane material body 5 through a sample clamping plate 6. And a lock block member 7 for fixing the sample clamping plate 6 is arranged at the connection between the sample clamping plate 6 and the test sample plate frame 4. The membrane material body 5 is fixedly and stably placed through the sample clamping plate 6. Winding mechanisms 8 are arranged in the upper and lower storage grooves of the test sample plate frame 4. The upper and lower winding mechanisms 8 are respectively used for winding the upper and lower ends of the membrane material body 5 to perform the tensioning and leveling operation of the membrane material body 5.

[0057] Specifically, in this technical solution, when placing the membrane material body 5 on the test sample plate frame 4, according to Figure 4 , Figure 7 and Figure 8As shown, receiving grooves are provided at the middle positions on both the upper and lower sides of the test sample rack 4. Rewinding mechanisms 8 are provided in the upper and lower receiving grooves of the test sample rack 4. After the rewinding mechanisms 8 are installed, their centers are on the same horizontal central axis as the center of the receiving grooves in the test sample rack 4. Since the rewinding mechanism 8 includes a rewinding rod 11 for rewinding the film material body 5 and a limit seat 12 for braking the rewinding rod 11, the rewinding rod 11 is installed in the receiving groove of the test sample rack 4. Also, since a through-shaped long groove portion is provided on the rod body of the rewinding rod 11, before the test, the film material body 5 of corresponding specifications and dimensions is cut. The upper and lower ends of the film material body 5 are respectively inserted through the long groove portions of the upper rewinding rod 11 and the lower rewinding rod 11, so that the film material body 5 is attached to the right side wall of the test sample rack 4, completing the installation of the film material body 5 on the test sample rack 4.

[0058] Specifically, in this technical solution, the rewinding mechanism 8 is used to perform a rewinding operation on the film material body 5. According to Figure 4 , Figure 5 , Figure 7 and Figure 8 shown, since the main end cover 14 is installed in an active state in the rear side wall cavity of the receiving groove in the test sample rack 4 and is clamped and fixedly connected to the rear end of the rewinding rod 11 by bolts, and since the sub-end cover 18 is installed in an active state in the front side wall cavity of the receiving groove in the test sample rack 4 and is movably clamped at the front end of the limit seat 12, two fingers simultaneously press the main end cover 14 and the sub-end cover 18, and at the same time drive the main end cover 14 and the sub-end cover 18 to rotate. When the sub-end cover 18 is driven, the sub-end cover 18 rotates at the front end of the limit seat 12 without affecting the limit seat 12;

[0059] Since the rear end of the rewinding rod 11 is fixedly connected to the main end cover 14, the two form a synchronous rotation structure. Also, since bearings are fixedly clamped at both the front and rear ends of the rewinding rod 11, after the rewinding rod 11 is installed in the receiving groove of the test sample rack 4, its front and rear ends are respectively inserted into the front and rear side walls of the receiving groove in the test sample rack 4 together with the bearings, and its front and rear ends are respectively inserted into the cavity of the front and rear side walls of the receiving groove in the test sample rack 4. Further, since the long groove portion in the rewinding rod 11 is connected to the end of the film material body 5 in an inserted manner and the two are wound together, when the main end cover 14 is driven, it drives the rewinding rod 11 to move synchronously, so that the rewinding rod 11 performs a rewinding rotation in the receiving groove of the test sample rack 4, completing the rewinding operation of the film material body 5. After the film material body 5 is rewound, it is received in the receiving groove of the test sample rack 4;

[0060] Since the rotation directions of the upper and lower winding rods 11 in the sample plate rack 4 are opposite, and since the winding direction of the upper end of the membrane material body 5 on the upper winding rod 11 is opposite to the winding direction of the lower end of the membrane material body 5 on the lower winding rod 11, according to the above, the two winding rods 11 are operated in sequence to respectively wind up the upper and lower ends of the membrane material body 5, so as to complete the tensioning and flattening of the membrane material body 5, and ensure that the membrane material body 5 can be evenly exposed to light during the test.

[0061] Specifically, in this technical solution, the winding rod 11 performs a self-locking operation after completing the winding. Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, since the ratchet ring 15 is placed in a movable state in the front side wall groove cavity of the storage groove in the sample plate rack 4, and it is clamped and fixedly connected to the front end of the winding rod 11 by bolts, when the winding rod 11 is wound and rotated, the ratchet ring 15 is driven to rotate synchronously;

[0062] Since the limit seat 12 is used for braking the winding rod 11, the rear end of the limit seat 12 is an end facing the ratchet ring sleeve 15, and the front end of the limit seat 12 is an end away from the ratchet ring sleeve 15. The longitudinal section of the middle section of the limit seat 12 is a square structure. After being installed, it is movably clamped in the groove cavity of the front side wall of the storage groove in the sample plate rack 4, and its rear end is inserted into the ring cavity of the ratchet ring sleeve 15, so that the limit seat 12 is positioned on the sample plate rack 4 in an active state;

[0063] Since both sides of the rear end of the limit seat 12 are provided with a pawl member 16 of a square columnar structure, the end of the pawl member 16 facing the limit seat 12 is the pawl tail end, wherein the pawl tail end is provided with a limit disk portion of an integrated structure, and the end of the pawl member 16 away from the limit seat 12 is the pawl head end. After the pawl member 16 is installed, the pawl tail end and the limit disk portion are movably clamped in the groove cavity at the rear end of the limit seat 12, and the pawl head end movably penetrates the groove cavity wall at the rear end of the limit seat 12 and extends outward, so that the pawl member 16 is positioned on the limit seat 12 in an active state. Since the pawl head ends of the left and right pawl members 16 are arranged in opposite directions, a second spring 17 is installed at the sliding connection between the pawl member 16 and the limit seat 12, and the second spring 17 is arranged between the left and right pawl members 16 and placed in the groove cavity at the rear end of the limit seat 12. , one end of which is pressed against the claw tail end of the left pawl member 16, and the other end of which is pressed against the claw tail end of the right pawl member 16. The ratchet ring sleeve 15 is fixedly connected to the front end of the winding rod 11, and rotates synchronously with the winding rotation of the winding rod 11. When the ratchet ring sleeve 15 rotates, the direction of the ratchet in the ratchet ring sleeve 15 is adapted to the rotation and winding direction of the winding rod 11, so that the pawl member 16 slides along the ratchet in the ratchet ring sleeve 15. After being pushed, the pawl member 16 shrinks and slides on the limit seat 12, so that the second spring 17 is squeezed and elastically deformed. When the ratchet ring sleeve 15 rotates, the elastic deformation of the second spring 17 is used to reset, so that the pawl member 16 loses the pushing and extends and slides on the limit seat 12, and the claw head end of the pawl member 16 is connected to the ratchet ring sleeve 15 in a snap-fit manner;

[0064] Since a first torsion spring 13 is installed at the rotation connection between the rear section of the winding rod 11 and the sample plate rack 4, the first torsion spring 13 is movably sleeved on the rear section rod body of the winding rod 11 after being installed, one end of the first torsion spring 13 is clamped on the rear section rod body of the winding rod 11, and the other end of the first torsion spring 13 is clamped on the rear side wall of the storage groove in the sample plate rack 4. After the winding rod 11 is wound and rotated, the first torsion spring 13 is subjected to force and elastically deformed. Through the elastic deformation reset of the first torsion spring 13 and the clamping action between the pawl 16 and the ratchet ring sleeve 15, the rotated ratchet ring sleeve 15 is locked, that is, the winding rod 11 after winding and rotating is automatically locked.

[0065] Specifically, in this technical solution, the winding rod 11 is unlocked according to Figure 7 and Figure 9As shown, after the secondary end cover 18 is installed, it is movably clamped at the front end of the limit seat 12, so that the secondary end cover 18 is positioned on the limit seat 12 in a movable state, and the two form a synchronous sliding structure. Since spring chambers are provided on both the upper and lower sides of the front section of the limit seat 12, a third spring 19 is installed at the sliding connection between the limit seat 12 and the test sample rack 4. The third spring 19 is symmetrically arranged up and down with respect to the horizontal central axis of the limit seat 12. After the third spring 19 is installed, it is movably inserted into the spring chamber of the limit seat 12. One end of it abuts against the wall of the spring chamber of the limit seat 12, and the other end abuts against the cavity wall of the front side wall of the receiving groove in the test sample rack 4. Press the secondary end cover 18 to unlock and slide the limit seat 12 in the cavity of the front side wall of the receiving groove in the test sample rack 4, and cause the third spring 19 to be elastically deformed by extrusion. In addition, when the pressure on the secondary end cover 18 is released, the elastic deformation of the third spring 19 is used to drive the limit seat 12 to slide back to its original position;

[0066] Since an annular groove portion 1501 for unlocking and sliding the limit seat 12 is provided in the annular cavity of the ratchet ring sleeve 15, the diameter dimension of the annular groove portion 1501 is larger than the distance dimension between the two pawl members 16 in the extended state. Also, since a first torsion spring 13 for resetting is installed at the rotational connection between the rear section of the winding rod 11 and the test sample rack 4, after the limit seat 12 is driven to unlock and slide, the pawl end of the pawl member 16 loses the engagement connection with the ratchet ring sleeve 15, and the pawl member 16 moves into the annular groove portion 1501, without affecting the reset rotation of the ratchet ring sleeve 15, unlocking the winding rod 11. Then, by using the elastic deformation of the first torsion spring 13 to reset, the winding rod 11 rotates for unwinding in the receiving groove of the test sample rack 4, completing the unwinding and replacement operation of the film material body 5.

[0067] Specifically, in this technical solution, the film material body 5 is fixedly and stably installed by the test sample clamping plate 6. According to Figure 5 and Figure 6 As shown, the right side wall of the test sample rack 4 faces the ultraviolet aging test chamber body 1. Empty grooves are provided in the middle positions of the front and rear side walls of the test sample rack 4. Since connecting plate portions with an integrated structure are vertically provided in the middle positions of the front and rear sides of the test sample clamping plate 6, after the film material body 5 is tensioned and flattened, it is attached to the right side wall of the test sample rack 4. After the test sample clamping plate 6 is installed, two of its connecting plate portions are respectively inserted into the two empty grooves of the test sample rack 4, and the plate body thereof presses against the right side wall of the test sample rack 4, that is, the film material body 5 is clamped against the right side wall of the test sample rack 4, completing the further fixed and stable installation of the film material body 5;

[0068] Since locking block members 7 for fixing the specimen clamping plate 6 are provided in both the front and rear empty slots of the test sample holder 4, the cross-section of the locking block member 7 is in an "L" shape structure, divided into two parts: a horizontal block and a vertical block. After the locking block member 7 is installed, it is movably clamped inside the frame of the test sample holder 4. Among them, the end of the horizontal block extends into the empty slot of the test sample holder 4 through the frame of the test sample holder 4 in a movable manner, and the end of the vertical block extends outward through the left side wall of the test sample holder 4 in a movable manner, so that the locking block member 7 is positioned on the test sample holder 4 in a movable state. Also, since spring bins are equidistantly arranged on the vertical block of the locking block member 7, a first spring 10 is installed at the sliding connection between the test sample holder 4 and the locking block member 7. The first spring 10 is arranged at equal intervals on the locking block member 7. After the first spring 10 is installed, it is movably inserted into the spring bin of the locking block member 7. One end of it presses against the wall of the spring bin in the locking block member 7, and the other end presses against the frame of the test sample holder 4. Moreover, since the end of the horizontal block of the locking block member 7 is in an inclined tongue shape structure, and the inclined side wall of the inclined tongue end faces the specimen clamping plate 6. When the connecting plate part of the specimen clamping plate 6 is inserted into the empty slot of the test sample holder 4, through the inclined side wall of the inclined tongue end of the locking block member 7, the connecting plate part of the specimen clamping plate 6 pushes the inclined tongue end of the locking block member 7, causing the locking block member 7 to contract and slide in the empty slot of the test sample holder 4, and causing the first spring 10 to be elastically deformed under extrusion. When the connecting plate part of the specimen clamping plate 6 is inserted into the empty slot of the test sample holder 4, through the elastic deformation reset of the first spring 10, the locking block member 7 slides out in the empty slot of the test sample holder 4, and the inclined tongue end of the locking block member 7 is connected to the connecting plate part of the specimen clamping plate 6 in a clamping manner to lock the specimen clamping plate 6.

[0069] Specifically, in this technical solution, before the test, after the film material body 5 is placed on the test sample holder 4, the test sample holder 4 is arranged equidistantly in the frame cavity of the bearing frame 3 according to Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, an opening communicating with the middle cavity of the box door panel 2 is also provided on the right side wall of the box door panel 2 (i.e., the side close to the ultraviolet aging test chamber body 1). The bearing frame 3 is in a square frame structure. After being installed, it is clamped and fixedly connected by bolts at the opening on the right side wall of the box door panel 2. Since a through-opening groove 302 for taking and placing the test sample rack 4 is provided at the front end of the bearing frame 3, and the through-opening groove 302 is in communication with the middle cavity of the bearing frame 3, and the area size of the through-opening groove 302 is larger than the area size of the test sample rack 4, so that the test sample rack 4 can freely enter and exit the through-opening groove 302. Also, since the through-opening groove 302 is provided with a right side opening facing the outside of the box door panel 2, and a cover plate 9 is provided at the right side opening of the through-opening groove 302. After being installed, the cover plate 9 is clamped at the front end of the right side wall of the bearing frame 3. Before arranging the test sample rack 4, the cover plate 9 is disassembled from the bearing frame 3 by pulling, so that the right side opening of the through-opening groove 302 is no longer blocked. Then, the test sample rack 4 is placed in the cavity of the bearing frame 3 through the through-opening groove 302;

[0070] Since circular tube-shaped guide grooves 301 are horizontally provided on both the upper and lower cavity walls of the bearing frame 3, and an opening is provided on the side of the guide groove 301 facing the middle cavity of the bearing frame 3, and the width dimension of the opening is smaller than the diameter dimension of the guide groove 301. Also, since circular rod-shaped guide rod parts 401 are clamped and fixedly connected by bolts at both the upper and lower ends of the test sample rack 4, and the guide rod parts 401 are arranged in parallel with the test sample rack 4, and the upper and lower two guide rod parts 401 respectively correspond to the upper and lower two guide grooves 301. When the test sample rack 4 is arranged on the bearing frame 3, the test sample rack 4 is movably clamped in the cavity of the bearing frame 3, so that the guide rod parts 401 movably penetrate through the openings of the guide grooves 301, and the guide rod parts 401 are movably clamped in the guide grooves 301, thereby arranging the test sample racks 4 at equal intervals in the cavity of the bearing frame 3. After the test sample racks 4 are arranged, the test sample racks 4 are positioned in a movable state in the cavity of the bearing frame 3, that is, the test sample racks 4 will not be separated from the bearing frame 3, and adjacent two test sample racks 4 are arranged in a fitting state;

[0071] After the arrangement of the test sample rack 4 is completed, according to the above, the right side opening of the through-opening groove 302 is re-blocked by the cover plate 9 clamped on the bearing frame 3. After the cover plate 9 blocks the through-opening groove 302, the cover plate 9 is flush with the right side wall of the bearing frame 3, and the cover plate 9 does not block the sliding of the test sample rack 4.

[0072] Specifically, in this technical solution, the film material body 5 is tested by the ultraviolet aging test chamber body 1. According to Figure 1 、 Figure 2 、 Figure 3 and Figure 5As shown, since a shaft column is rotatably connected to the lower end of the box door panel 2, after the box door panel 2 is installed, it is movably clamped at the box opening of the ultraviolet aging test chamber body 1, and both ends of the shaft column are respectively inserted and fixedly connected to the two side groove walls at the box opening of the ultraviolet aging test chamber body 1 through bolts. Also, since a box door panel 2 is flip-connected to the box opening of the ultraviolet aging test chamber body 1, a carrying frame 3 is fixedly connected to the right side wall of the box door panel 2. After the test sample racks 4 are arranged at equal intervals on the carrying frame 3, the box door panel 2 is flipped and closed on the ultraviolet aging test chamber body 1. The test sample racks 4 carry the film material body 5 and maintain an appropriate distance from the ultraviolet light source simulation component and the temperature and humidity control component in the ultraviolet aging test chamber body 1, and are arranged in a parallel state. After the box door panel 2 is flipped and closed, the box door panel 2 is locked with the ultraviolet aging test chamber body 1 through the lock in the box door panel 2. During the test, the ultraviolet light source simulation component simulates the ultraviolet radiation environment, and the temperature and humidity control component simulates the warm or dry and hot alternating environment to test the rapid aging phenomena such as color change and embrittlement of the test film material;

[0073] Since two through-shaped sample openings are sequentially formed from top to bottom at the middle position of the plate body of the sample clamping plate 6, and the width dimension of the film material body 5 is greater than the width dimension of the sample opening in the sample clamping plate 6. During the test of the film material body 5, the ultraviolet light source simulation component and the temperature and humidity control component in the ultraviolet aging test chamber body 1 perform rapid aging tests such as color change and embrittlement on the film material body 5 through the sample openings in the sample clamping plate 6, even if there are two sample points on the film material body 5. Embodiment

[0074] Based on Embodiment 1 of the present invention, please refer to Figures 11 - 17 the technical solution shown. During the test using the ultraviolet rapid aging test chamber, to ensure that the test samples are evenly affected by the fluorescent ultraviolet light irradiation and the temperature and humidity, it is necessary to periodically rotate the positions of the test samples to ensure that the test samples receive the same radiation energy. In response to the problem that in the existing ultraviolet rapid aging test chamber, after the machine is stopped, the box door needs to be opened to manually rotate the positions of the test samples. This rotation method will cause the test to be interrupted, affecting the continuity and stability of the test, resulting in distorted test data and affecting the detection effect. The pick-and-place rack 23 drives the jaw member 25 to move and dock with the boss portion 402, and the upper and lower jaw members 25 clamp the rearmost test sample rack 4. After the movable seat 22 drives the pick-and-place rack 23 to move, the rearmost test sample rack 4 is moved to the foremost end of the carrying frame 3. Then, the rearmost test sample rack 4 pushes the remaining multiple test sample racks 4 to move backward by one unit, rotating the rearmost test sample rack 4 to the foremost end position and replacing the foremost test sample rack 4 to become the new foremost test sample rack 4.

[0075] Specifically, in this technical solution, the two jaw members 25 perform a clamping operation on the test sample rack 4. According to Figure 13 、Figure 14 and Figure 15 As shown, the pick-and-place rack 23 is arranged in a "mouth"-shaped structure, and is divided into four parts: an upper frame body, a lower frame body, a left frame body, and a right frame body. Since the pick-and-place rack 23 is in a vertical state on the movable seat 22 after being arranged, the upper frame body and the lower frame body respectively movably penetrate the upper and lower sections of the movable seat 22, so that the pick-and-place rack 23 is positioned on the movable seat 22 in a movable state. Since the electric telescopic rod 24 is arranged in a parallel state with the pick-and-place rack 23 after being arranged, it is plugged in and fixedly installed on the left side wall of the movable seat 22 by bolts, and the output end thereof is plugged in and fixedly connected to the left side frame body of the pick-and-place rack 23 by bolts, the electric telescopic rod 24 is started to retract and operate, and the pick-and-place rack 23 is driven to extend and slide on the movable seat 22 by the electric telescopic rod 24. After the pick-and-place rack 23 slides, the right frame body thereof fits with the left side wall of the boss portion 402, driving the clamping claw member 25 to dock with the boss portion 402;

[0076] Since the linkage frame 26 is arranged in a "U"-shaped structure, it is divided into a longitudinal frame body and two transverse frames located on the upper and lower sides of the longitudinal frame body. After the linkage frame 26 is installed, the movable card is set in the right frame body groove cavity of the pick-and-place frame 23. Since the telescopic electromagnet 27 is arranged between the two transverse frames in the linkage frame 26, the telescopic electromagnet 27 is fixedly installed in the right frame body groove cavity of the pick-and-place frame 23 by bolts after it is installed, and its output end is plugged and fixedly connected to the longitudinal frame body of the linkage frame 26 by bolts. After the clamping claw member 25 is docked with the boss portion 402, the telescopic electromagnet 27 is started to extend and operate, and the linkage frame 26 is driven by the telescopic electromagnet 27 to slide in the right frame body of the pick-and-place frame 23;

[0077] Since the section of the clamping claw member 25 close to the sample plate rack 4 is the right section of the claw body, wherein the right section of the claw body is in an "L"-shaped structure, i.e., an "L"-shaped claw body, and the section of the clamping claw member 25 away from the sample plate rack 4 is the left section of the claw body, wherein the left section of the claw body is in a "U"-shaped structure, i.e., a "U"-shaped claw body, and since the upper and lower sides of the right side frame of the pick-and-place rack 23 are both provided with clamping claw members 25, the middle part of the clamping claw member 25 is rotatably connected with an axle column, and the clamping claw member 25 is movably clamped in the right side frame groove cavity of the pick-and-place rack 23 after being placed, wherein the two ends of the axle column are respectively inserted and fixedly connected to the groove cavity walls on both sides of the right side frame of the pick-and-place rack 23 by bolts, and wherein the "U"-shaped claw body is placed in the right side frame groove cavity of the pick-and-place rack 23, and wherein the "L"-shaped claw body extends outward from the right side frame groove cavity of the pick-and-place rack 23, so that the clamping claw member 25 is in an active state and positioned on the right side frame of the pick-and-place rack 23;

[0078] Since the "U"-shaped claw body in the clamping jaw member 25 is inclined on the "L"-shaped claw body, the upper and lower clamping jaw members 25 are arranged in opposite states, that is, the "U"-shaped claw bodies in the upper and lower clamping jaw members 25 are combined to form an "eight"-shaped structure, and through-shaped slide grooves are provided on the frame walls of the "U"-shaped claw body in the clamping jaw member 25. Since the linkage frame 26 is placed between the upper and lower clamping jaw members 25, a convex block of an integrated structure is provided on the horizontal frame body of the linkage frame 26, wherein the convex block is inserted and passed through the bolt. A pin is fixedly connected, and after the linkage frame 26 is installed, the protrusion of the horizontal frame body is movably clamped in the frame cavity of the "U"-shaped claw body of the clamping claw member 25, and the two ends of the pin on the protrusion are movably inserted into the two side slide grooves of the "U"-shaped claw body of the clamping claw member 25. After the linkage frame 26 is driven to slide to the left, the horizontal frame body of the linkage frame 26 slides on the "U"-shaped claw body of the clamping claw member 25 with the assistance of the pin, and the clamping claw member 25 is turned over and closed on the right frame body of the pick-and-place frame 23;

[0079] Since the left side wall of the sample plate rack 4 is arranged toward the box door panel 2, the boss portion 402 is an integrated structure and is vertically arranged at the center of the left side wall of the sample plate rack 4. After the clamping jaw 25 is flipped and closed, the flipping directions of the upper and lower clamping jaws 25 are opposite, so that the "L"-shaped claw body in the clamping jaw 25 is connected to the boss portion 402 in a snap-fit manner, and the boss portion 402 is clamped and fixed by the two clamping jaws 25 to complete the clamping of the sample plate rack 4.

[0080] Specifically, in this technical solution, the sample plate rack 4 at the rear end is rotated to the front end of the carrying frame 3, according to Figure 11 , Figure 12 , Figure 13 and Figure 17 As shown, the left side plate wall of the box door plate 2 (i.e., the side away from the UV aging test box body 1) is provided with an open opening connected to the plate cavity in the box door plate 2, and the right side shell cavity wall of the shell cavity in the external shell 201 is set in an open state. After the external shell 201 is placed, its right side shell cavity wall is clamped and fixedly connected to the open opening of the left side plate wall in the box door plate 2 by bolts, and the shell cavity is connected to the plate cavity in the box door plate 2. After the supporting frame 3 is placed, its frame cavity corresponds to the plate cavity in the box door plate 2. The electric telescopic rod 24 is started to extend and operate, and the electric telescopic rod 24 is used to drive the pick-up and placement rack 23 to shrink and slide on the movable seat 22, and the two clamping claws 25 clamp the sample plate rack 4 at the rear end, and the pick-up and placement rack 23 shrinks and slides to drive the sample plate rack 4 at the rear end to separate from the supporting frame 3;

[0081] Since the left groove wall at the rear end of the guiding groove 301 is provided with a separating groove part 3013 for the rotation and replacement of the test sample holder 4, and the width dimension of the separating groove part 3013 is adapted to the width dimension of the test sample holder 4, enabling the test sample holder 4 to freely enter and exit the separating groove part 3013. Also, since a blocking plate 30 for limiting the guide rod part 401 is provided at the separating groove part 3013, the blocking plate 30 is symmetrically arranged up and down with respect to the horizontal central axis of the bearing frame 3. The upper and lower two blocking plates 30 are respectively placed on the upper and lower two guiding grooves 301. The upper end of the blocking plate 30 is rotatably connected with a shaft column, which is movably clamped in the separating groove part 3013 after being installed, and both ends of the shaft column are respectively inserted and fixedly connected to the two side groove walls of the separating groove part 3013 through bolts. Moreover, since a second torsion spring 31 for resetting is installed at the connection between the blocking plate 30 and the groove wall of the separating groove part 3013, the second torsion spring 31 is symmetrically arranged with respect to the vertical central axis of the blocking plate 30. The second torsion spring 31 is movably sleeved on the shaft column of the blocking plate 30 after being installed, one end of which is clamped on the blocking plate 30, and the other end of which is clamped on the groove cavity wall of the separating groove part 3013. The last test sample holder 4 is separated from the bearing frame 3, so that the guide rod part 401 is separated from the guiding groove 301 at the separating groove part 3013. When the guide rod part 401 is separated from the separating groove part 3013, the blocking plate 30 is pushed and flipped open in the separating groove part 3013, and the second torsion spring 31 is elastically deformed under extrusion. After the guide rod part 401 is separated from the separating groove part 3013, the elastic deformation of the second torsion spring 31 is used for resetting, so that the blocking plate 30 is reset and flipped closed in the separating groove part 3013;

[0082] Since bearings are fixedly clamped at both the front and rear ends of the rotation screw rod 20, the rotation screw rod 20 is horizontally arranged in the middle of the cavity of the external housing 201, and both its front and rear ends are inserted into the front and rear cavity walls of the external housing 201 together with the bearings after being installed. Also, since the servo motor 21 is fixedly installed on the rear side wall of the external housing 201 through bolts after being installed, and the output end thereof is fixedly clamped together with the rear end of the rotation screw rod 20, when the servo motor 21 is started to operate, the rotation screw rod 20 is driven by the servo motor 21 to rotate in the middle of the cavity of the external housing 201;

[0083] Since the movable seat 22 has a square structure, rollers are rotatably connected to both the upper and lower sides thereof at equal intervals. After the movable seat 22 is installed, the upper and lower ends thereof are respectively connected with the rollers and are movably clamped on the upper and lower side cavity walls of the external shell 201, so that the movable seat 22 is positioned in the external shell 201 in a movable state. Also, since the middle part of the movable seat 22 is inserted and threadedly connected with the rotation screw rod 20, after the test sample plate rack 4 at the rearmost end is driven to separate from the bearing frame 3 and move into the plate cavity of the box door panel 2, when the rotation screw rod 20 rotates, due to the threaded connection between the rotation screw rod 20 and the movable seat 22, the movable seat 22 slides in the cavity of the external shell 201, and the movable seat 22 drives the picking and placing rack 23 to slide in the external shell 201, that is, the picking and placing rack 23 drives the test sample plate rack 4 at the rearmost end to move forward in the plate cavity of the box door panel 2;

[0084] Since a through-opening groove 302 for the rotation of the test sample plate rack 4 is provided at the front end of the bearing frame 3, and the through-opening groove 302 is provided with a left port facing the middle plate cavity of the box door panel 2, after the test sample plate rack 4 moves forward and corresponds to the left port of the through-opening groove 302, after the picking and placing rack 23 is driven to extend and slide again, the test sample plate rack 4 at the rearmost end enters the frame cavity of the bearing frame 3 through the through-opening groove 302. The test sample plate rack 4 drives the guide rod portion 401 to form a sliding structure in the guide groove 301. The movable seat 22 drives the picking and placing rack 23 to slide backward and reset. The test sample plate rack 4 at the rearmost end pushes the remaining multiple test sample plate racks 4 to move backward by one unit, and rotates the test sample plate rack 4 at the rearmost end to the foremost position in the middle frame cavity of the bearing frame 3, so that the test sample plate rack 4 at the rearmost end replaces the test sample plate rack 4 at the foremost end to become the new foremost test sample plate rack 4.

[0085] At the same time, in this technical solution, according to Figure 11 、 Figure 16 and Figure 17As shown in the figure, pin members 28 are provided at both the front and rear sections of the guide rod portion 401. Since the pin member 28 is composed of a nail head portion and a nail tail portion, and the nail head portion has a hemispherical structure. After the pin member 28 is installed, the nail tail portion is movably clamped in the groove cavity of the guide rod portion 401, and the nail head portion movably penetrates through the groove cavity of the guide rod portion 401 and extends outwards, so that the pin member 28 is positioned on the guide rod portion 401 in a movable state. Also, since a fourth spring 29 is installed at the sliding connection between the guide rod portion 401 and the pin member 28, after the fourth spring 29 is installed, it is movably inserted into the groove cavity of the guide rod portion 401, and the other end abuts against the nail tail portion of the pin member 28 and also abuts against the groove cavity wall of the guide rod portion 401. Furthermore, since the positioning groove portion 3011 is provided at the front section of the guide groove 301 and its specification dimensions are adapted to the hemispherical end of the pin member 28. When the frontmost test sample holder 4 is pushed and slides down to the next unit, due to the hemispherical end setting of the pin member 28, the pin member 28 is squeezed and slides and contracts on the guide rod portion 401, causing the fourth spring 29 to be elastically deformed by the extrusion. When the rearmost test sample holder 4 rotates to the frontmost position, by using the elastic deformation of the fourth spring 29, the pin member 28 slides and extends on the guide rod portion 401, and the hemispherical end of the pin member 28 is connected to the positioning groove portion 3011 in a clamping manner to position the rotated rearmost test sample holder 4, that is, to limit the other multiple test sample holders 4 to prevent the test sample holders 4 from randomly displacing within the frame cavity of the bearing frame 3;

[0086] Since the chute portion 3012 is provided at the rear section of the guide groove 301 and its specification dimensions are adapted to the hemispherical end of the pin member 28, the hemispherical end of the pin member 28 is connected to the chute portion 3012 in a sliding manner. After the frontmost test sample holder 4 is pushed and slides down to the next unit, the hemispherical end in the pin member 28 moves into the chute portion 3012, which does not affect the sliding of the hemispherical end in the pin member 28, that is, it does not affect the rotation and movement of the other multiple test sample holders 4.

[0087] This is the entire working process of this ultraviolet rapid aging test chamber for films. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0088] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the records in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0089] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An ultraviolet rapid aging test chamber for a film, comprising: An ultraviolet aging test chamber body (1), at the opening of the ultraviolet aging test chamber body (1), there is a rotatably connected and openable chamber door panel (2), and on the left side wall of the chamber door panel (2), there is an external shell (201) whose shell cavity communicates with the middle cavity of the chamber door panel (2); It is characterized in that it further comprises: A carrying frame (3), the carrying frame (3) is fixedly connected to the right side wall of the chamber door panel (2), in the frame cavity of the carrying frame (3), test sample racks (4) are arranged at equal intervals, and on the right side wall of the test sample rack (4), a film material body (5) is clamped by a sample clamping plate (6), and at the connection between the sample clamping plate (6) and the test sample rack (4), there is a lock block member (7) for fixing the sample clamping plate (6), and the film material body (5) is fixedly and stably placed through the sample clamping plate (6); Among them, in the upper and lower two storage grooves of the test sample rack (4), winding mechanisms (8) are respectively arranged, and the upper and lower two winding mechanisms (8) are respectively used for winding the upper and lower ends of the film material body (5) to perform tensioning and flattening operations on the film material body (5); Among them, the winding mechanism (8) includes a winding rod (11) rotatably connected in the storage groove of the test sample rack (4) and a limit seat (12) for braking the winding rod (11), at the rotational connection between the rear section of the winding rod (11) and the test sample rack (4), a first torsion spring (13) for resetting is installed, and at the rear end of the winding rod (11), a main end cover (14) is fixedly connected, and at the front end of the winding rod (11), a ratchet ring sleeve (15) that rotates synchronously with the winding rod (11) is fixedly connected; Among them, on the left and right sides at the rear end of the limit seat (12), ratchet pawl members (16) are respectively telescopically and slidably connected, and at their sliding connection, a second spring (17) is installed, and the claw head end of the ratchet pawl member (16) is connected to the ratchet ring sleeve (15) in a clamping manner; Among them, the rotational directions of the upper and lower two winding rods (11) in the test sample rack (4) are opposite, the long groove part in the winding rod (11) is connected to the end of the film material body (5) in an inserted manner, and the two are wound and connected together.

2. The ultraviolet rapid aging test chamber for film according to claim 1, wherein: At the upper and lower ends of the test sample rack (4), guide rod parts (401) are fixedly connected, and the guide rod parts (401) are connected to the guide grooves (301) opened on the wall of the middle cavity of the carrying frame (3) in a movable clamping manner; Among them, at the front end of the carrying frame (3), there is an access slot (302) for taking, placing or rotating the test sample rack (4), and the right opening of the access slot (302) is blocked by a cover plate (9) clamped on the carrying frame (3).

3. The ultraviolet rapid aging test chamber for film according to claim 2, characterized in that: In the front and rear empty grooves of the test sample rack (4), lock block members (7) are respectively slidably connected, and at their sliding connection, a first spring (10) is installed, the end of the transverse block body in the lock block member (7) is in an inclined tongue shape, and the inclined tongue end in the lock block member (7) is connected to the connecting plate part in the sample clamping plate (6) in a clamping manner.

4. A UV rapid aging test chamber for films according to claim 1, characterized in that: A ring groove portion (1501) allowing the limit seat (12) to be unlocked and slide is formed in the ring cavity of the ratchet ring sleeve (15). Wherein, a secondary end cover (18) is rotatably connected to the front end of the limit seat (12), the limit seat (12) forms a sliding structure in the front side wall cavity of the storage groove in the test sample rack (4), and a third spring (19) is installed at the sliding connection between the two.

5. A UV rapid aging test chamber for films according to claim 1, characterized in that: In the middle of the housing cavity of the external housing (201), a rotation replacement lead screw (20) is driven to be rotatably connected by a servo motor (21) fixedly installed on the external housing (201). In the housing cavity of the external housing (201), a movable seat (22) is slidably connected by the drive of the rotation replacement lead screw (20), and the middle of the movable seat (22) is inserted and threadedly connected to the rotation replacement lead screw (20). Wherein, a pick-up and placement frame (23) is driven to be telescopically slidably connected to the movable seat (22) by an electric telescopic rod (24), and the electric telescopic rod (24) is fixedly installed on the left side wall of the movable seat (22). Claw members (25) for clamping and fixing the convex platform portion (402) are rotatably connected to the upper and lower sides of the right side frame body of the pick-up and placement frame (23), and the convex platform portion (402) is integrally arranged at the central position of the left side wall of the test sample rack (4).

6. The ultraviolet rapid aging test chamber for film according to claim 5, wherein: In the right side frame body of the pick-up and placement frame (23), a linkage frame (26) is driven to be slidably connected by a telescopic electromagnet (27), and the telescopic electromagnet (27) is fixedly installed in the right side frame body of the pick-up and placement frame (23). The transverse frame body of the linkage frame (26) is slidably connected to the "U”-shaped claw body of the claw member (25) by means of a pin, and the "L”-shaped claw body of the claw member (25) is connected to the convex platform portion (402) in a clamping manner.

7. An ultraviolet rapid aging test chamber for films according to claim 5, characterized in that: The test sample rack (4) drives the guide rod portion (401) to form a sliding structure in the guide groove (301). Both the front and rear sections of the guide rod portion (401) are telescopically slidably connected to pin members (28), and a fourth spring (29) is installed at the sliding connection between the two. Wherein, the head portion of the pin member (28) is in a hemispherical structure. The hemispherical end of the pin member (28) is connected to the positioning groove portion (3011) formed in the front section of the guide groove (301) in a clamping manner, and the hemispherical end of the pin member (28) is connected to the sliding groove portion (3012) formed in the rear section of the guide groove (301) in a sliding manner.

8. A UV rapid aging test chamber for films according to claim 7, characterized in that: On the left side wall of the rear end of the guide groove (301), a separation groove portion (3013) for the rotation replacement of the test sample rack (4) is formed, and a blocking plate (30) for limiting the guide rod portion (401) is arranged in the separation groove portion (3013). The blocking plate (30) forms a flipping structure in the separation groove portion (3013), and a second torsion spring (31) for resetting is installed at the flipping connection between the two.

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