A silicone heat aging test device

Abstract

The present invention discloses a heat-resistant aging test device for silicone, which relates to the field of silicone experimental technology. By combining a negative pressure pulling part and a conveying part, the airflow is used to flow at high speed inside the tube D, so that negative pressure is formed inside the negative pressure pulling part, causing the clamped and to shrink. When shrinking, the silicon material is pulled. Compared with motor drive, this driving method saves more resources. As the airflow flows at high speed inside the flow cavity, and the diameters of the negative pressure tube and the limit port are smaller than the flow cavity, negative pressure is formed inside the negative pressure tube and tubes A, B, and C. When the negative pressure is formed, the clamping rods A and B exposed on the outer wall will be contracted inward. At this time, the clamping rod A and the fixed silicon material will be subjected to a lateral and longitudinal pulling force, so that the pulling strength of the silicon material can be tested. Compared with motor drive, this method can save resources and improve work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of organosilicon experiments, in particular to an organosilicon heat-resistant aging test device. Background Art

[0002] The silicone heat aging test is of great significance for evaluating the durability and reliability of materials. By simulating the aging process in a high-temperature environment, the performance changes and service life of the material in actual use can be predicted, providing a scientific basis for the selection, design and application of the material. At the same time, this test also helps to promote the research and development and improvement of silicone materials, and promote their application and development in a wider range of fields.

[0003] According to Chinese utility model patent CN219870629U, the disclosed organic silicon heat aging test device includes a test box and a sealed door, the side of the test box is hinged with a sealed door; it also includes: a motor fixedly mounted on the top of the test box, and the output end of the motor is fixedly connected to a connecting gear, and the side of the connecting gear is meshed and connected to a transmission gear, and connecting pipes are provided on both sides of the test box; a connecting screw is fixedly connected to the bottom of the connecting gear, and the external thread of the connecting screw is connected to a connecting seat, and a docking seat is provided at the bottom of the connecting seat, and a rotating rod is provided inside the docking seat, and A clamping plate is provided on the outside of the rotating rod; the docking plate is welded to the inner wall of the test box. The silicone heat aging test device is provided with a connecting gear and a connecting screw. By controlling the rotation of the connecting gear, the transmission gears on both sides are driven to rotate simultaneously, and the connecting gear and the transmission gear are both connected to the connecting screw. The threads of the connecting screws on both sides are opposite to the threads of the middle connecting screw, so that the connecting seat and the docking seat on the connecting screw move at the same time, thereby driving the multiple silicone materials clamped on the docking seat to move at the same time, realizing the pulling test at the same time as the heat aging test, and multiple groups can be tested at the same time, which greatly improves the detection efficiency.

[0004] Although the above patent can conduct aging tests and pulling tests at the same time, the above pulling test requires the installation of a motor to pull the silicone material, which consumes a certain amount of resources during the pulling. In the process of shutting down the motor, the rotor inside the motor will still rotate due to inertia, and the rotation will drive the gear to rotate. When the silicone material is stretched to the limit, it is very easy to be torn by the above parts. Summary of the Invention

[0005] The purpose of the present invention is to create a negative pressure difference through high-speed airflow to drive the pulling part to pull the silicon material, thereby avoiding the need for motor drive during the operation process, and then by limiting the inside of the pulling part, the problem of the silicon material being pulled to the limit and causing tearing has been solved, thereby providing a silicone heat-resistant aging test device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a silicone heat-resistant aging test device, comprising a test box, a fixture fixedly installed on the upper surface of the inner cavity of the test box, a negative pressure pulling part embedded in the interior of the test box, a conveying part embedded in the outer wall of the negative pressure pulling part, the bottom of the other side of the conveying part is fixedly connected to a side tube, and the outer wall of the side tube is fixedly connected to three metal tubes.

[0007] As a further solution of the present invention: the negative pressure pulling part includes a limit rod, tube A, tube B, tube C, clamp rod A, spring clamp, clamp rod B, plug interface, and a seal. Tube A is embedded and installed on one side of the test box, tube B is embedded and installed on the top of the test box, and tube C is embedded and installed on the other side of the test box. The tubes A, B, and C are internally clamped with limit rods, and the tubes A, B, and C are internally movably connected with clamp rod A and clamp rod B. The outer walls of the clamp rod A and clamp rod B are fixedly connected to the spring clamp. Plug interfaces are provided inside the tubes A, B, and C, and seals are provided inside the plug interfaces.

[0008] As a further solution of the present invention: the interior of the conveying member includes a tube D, a negative pressure tube, a flow cavity, and a limit port. The backs of the tubes A, B, and C are fixedly connected to the negative pressure tube. The outer wall of the negative pressure tube is fixedly connected to the tube D. A flow cavity is opened inside the tube D. Three limit ports are opened inside the tube D. The interiors of the three limit ports and the outer wall of the negative pressure tube are adapted to each other. The diameter of the flow cavity is four times the diameter of the limit port.

[0009] As a further solution of the present invention: an injection port is opened inside the side tube, one side of the bottom of the side tube is fixedly connected to the other side of the bottom of the tube D, and the inside of the injection port is embedded in the outer wall of the metal tube.

[0010] As a further solution of the present invention: the interior of the tube A includes an inner tube, an annular compartment, a piston, a slot, a delivery tube, a force reducing plate, and an air bag. The inner tube is fixedly installed inside the tube A, and an annular compartment is provided at the distance between the inner tube and tube A. The inner tube is movably sleeved with the piston, and slots are provided on both sides of the piston. The interior of the slot is inlaid with a force reducing plate, and the back side of the force reducing plate is fixedly connected to the inner sides of the inner tube. The back side of the force reducing plate is also fixedly connected to the delivery tube, and the bottom of the delivery tube is fixedly connected to the air bag. The bottom of the limit rod is fixedly connected to the plug-in rod, and the bottom of the plug-in rod and the interior of the inner tube are plugged into each other. The interiors of the clamping rod A and the clamping rod B are movably sleeved with a sleeve plate, and the outer wall of the sleeve plate is fixedly connected to the outer wall of the piston. The outer wall of the sleeve plate is fixedly connected to the rotating rod, and the rotating rods are both located inside the clamping rod A and the clamping rod B. The outer wall of the rotating rod is movably sleeved with a torsion spring, and the torsion spring is located inside the clamping rod A and the clamping rod B.

[0011] As a further solution of the present invention: the interior of the seal includes a semicircular rubber A, a semicircular rubber B, a fixed rod, a telescopic rod, and a spring B. The semicircular rubber A and the semicircular rubber B fit together and are located inside the plug interface. The fitting part of the semicircular rubber B and the semicircular rubber A is a rounded corner. The semicircular rubber B and the semicircular rubber A are three groups and distributed in a linear array on the top of the inner tube. The outer walls of the semicircular rubber B and the semicircular rubber A are fixedly connected to the telescopic rod, the inside of the telescopic rod is movably connected to the inner rod, and the outer wall of the inner rod is movably connected to the spring B. The three groups of semicircular rubbers A are connected in series through the telescopic rod. The semicircular rubbers B are fixedly connected on both sides of the top of the annular compartment, and the outer wall of the semicircular rubber B is fixedly connected to the outer wall of the telescopic rod.

[0012] As a further solution of the present invention: the interior of the force reducing plate includes a connecting cavity, an air distribution pipe, a friction airbag A, and a friction airbag B. The top and bottom of the force reducing plate are fixedly connected to the friction airbag A and the friction airbag B. The friction airbag B and the friction airbag A are interconnected through the air distribution pipe. The side of the force reducing plate is fixedly connected to the connecting cavity, and the connecting cavity and the delivery pipe are fixedly connected.

[0013] As a further solution of the present invention: the interior of the inner tube includes port A, a negative pressure port, port B, a rubber sheet, and a top port. The top port is opened at the top of the inner tube, port A is opened on the surface of the inner tube, port B is opened at the bottom of the inner cavity of the inner tube, the bottom of the port B is fitted with a rubber sheet, the outer wall of the rubber sheet and the outer wall of the bottom of the inner tube are fitted with each other, the back of the inner tube is opened, and the outer wall of the negative pressure port is fixedly connected to the outer wall of the negative pressure tube.

[0014] As a further solution of the present invention: the spring clamp includes an outer cylinder, a support rod, a spring A, a sleeve rod, and a circular plate. The outer wall of the outer cylinder and the outer walls of the clamping rod A and the clamping rod B are fixedly connected. The support rod is fixedly installed inside the outer cylinder. The outer wall of the support rod is wrapped with spring A. The outer wall of the spring A is fitly connected to the rubber damping ring. The outer wall of the rubber damping ring is fixedly connected to the sleeve rod. The inner parts of the sleeve rod and the circular plate are both sleeved with the outer wall of the support rod. The outer wall of the sleeve rod is fixedly connected to the circular plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By combining the negative pressure pulling member and the conveying member, the airflow is used to flow at high speed inside the tube D, forming a negative pressure inside the negative pressure pulling member, causing the clamped parts to shrink. When shrinking, the silicon material is pulled. Compared with motor drive, this driving method saves more resources. As the airflow flows at high speed inside the flow cavity, and the diameters of the negative pressure tube and the limit port are smaller than the flow cavity, negative pressure is formed inside the negative pressure tube and tubes A, B, and C. When negative pressure is formed, the clamping rods A and B exposed on the outer wall will shrink inward. At this time, the clamping rod A and the fixed silicon material will be subjected to a horizontal and vertical pulling force, thereby testing the pulling strength of the silicon material. Compared with motor drive, this method can save resources and improve work efficiency.

[0017] 2. By using a combination of a limit rod and a force reducing plate, the limit rod can be used to limit the contraction length of the piston during the contraction process, thereby avoiding tearing damage to the silicone material caused by excessive contraction. The limit rod can also increase the friction between the force reducing plate and the piston, effectively preventing excessive contraction and irreversible damage to the silicone. The limit rod is inserted into the inner tube to limit the piston, so that the contraction length can be controlled, thereby avoiding excessive contraction and tearing of the silicone material. After that, the gas distribution pipe can be used to distribute the gas to the friction airbag A and the friction airbag B to expand them. During the expansion process, a certain friction force will be generated on the piston clamped on the outer wall. Therefore, the friction between the outer wall and the inner tube when the clamping rods A and B are recovered, the two friction forces can slow down the speed of the piston contraction, thereby avoiding excessive contraction and damage to the silicone material. Compared with the inertia generated when the motor is pulled, this can protect the silicone material, thereby improving the accuracy of the test.

[0018] 3. By using the clamping rod A, spring clamp and clamping rod B in combination, the spring clamp can be used to initially clamp the silicon material, while the clamping rods B and A can perform secondary clamping on the silicon material to prevent the reset force generated when the silicon material is pulled to the limit and cause it to break away from the clamping of the spring clamp. When moving inward, the clamping rods A and B will rub against the outer wall of the inner tube, causing the above two parts to move relative to each other, from an expanded state to a contracted state. During the contraction process, the outer tube connected to the outer walls of the above two parts will also move relative to each other, forming a secondary fixation for the pulled silicon material. Compared with the existing spring clamping, this clamping is like tweezers. The closer the tube A is to the clamping end, the tighter it is fixed, thereby effectively avoiding the problem of clamping detachment during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a side structural schematic diagram of the present invention;

[0021] Figure 3For the present invention Figure 1 A is an enlarged structural diagram;

[0022] Figure 4 For the present invention Figure 1 A schematic diagram of the structure is enlarged at point B;

[0023] Figure 5 This is a schematic diagram of the overall internal structure of the negative pressure pulling member of the present invention;

[0024] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point C;

[0025] Figure 7 Schematic diagram of the cross-sectional structure of the energy reducing plate of the present invention;

[0026] Figure 8 Schematic diagram of the cross-sectional structure of the inner tube of the present invention;

[0027] Figure 9 This is a schematic diagram of the overall internal structure of the spring clamp of the present invention;

[0028] Figure 10 This is a schematic diagram of the overall structure of the conveying member of the present invention;

[0029] Figure 11 It is a schematic diagram of the overall structure of the sleeve plate of the present invention.

[0030] In the figure: 100, test chamber; 200, fixture; 300, negative pressure puller; 301, limit rod; 3011, plug rod; 302, tube A; 3021, inner tube; 30211, port A; 30212, negative pressure port; 30213, port B; 30214, rubber sheet; 30215, top port; 3022, annular compartment; 3023, piston; 3024, slot; 3025, delivery pipe; 3026, force reducing plate; 30261, connecting chamber; 30262, air distribution pipe; 30263, friction airbag A; 30264, friction airbag B; 3027, airbag; 303, tube B; 304, tube C; 305, clamping rod A; 306, spring clamp; 3061, outer cylinder; 3062, support rod; 3063, spring A; 3064, sleeve rod; 3065, circular plate; 3067, rubber damping ring; 307, clamp rod B; 308, plug interface; 309, seal; 3091, semicircular rubber A; 3092, semicircular rubber B; 3093, fixed rod; 3094, telescopic rod; 3095, spring B; 310, sleeve plate; 3101, rotating rod; 3102, torsion spring; 400, conveying part; 401, tube D; 402, negative pressure tube; 4011, flow chamber; 4012, limit port; 500, metal tube; 600, side tube; 601, injection port. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0033] Example 1

[0034] See also Figures 1 to 11 This embodiment provides a silicone heat aging test device, including a test chamber 100, a fixture 200 fixedly mounted on the upper surface of the inner cavity of the test chamber 100, a negative pressure engaging member 300 embedded in the interior of the test chamber 100, a conveying member 400 embedded in the outer wall of the negative pressure engaging member 300, a side tube 600 fixedly connected to the bottom of the other side of the conveying member 400, and three metal tubes 500 fixedly connected to the outer wall of the side tube 600;

[0035] During operation, the silicon material is placed inside the fixture 200 for preliminary fixation, and then the other positions of the silicon material are fixed through the negative pressure pulling part 300. At this time, hot air flow is injected through the conveying part 400. As the air flow flows at high speed inside the conveying part 400, negative pressure will be formed inside the negative pressure pulling part 300, causing the parts exposed to the external environment to shrink into the interior. During the shrinkage process, the silicon material is subjected to a pulling test, thereby avoiding the need for motor drive and saving resources. The hot air flow can be injected into the interior of the metal tube 500 through the connected side tube 600, and then transported by the metal tube 500 into the interior of the test box 100 to perform a heat aging test on the silicon material.

[0036] In Example 2, the negative pressure pulling member 300 includes a limit rod 301, a tube A302, a tube B303, a tube C304, a clamping rod A305, a spring clamp 306, a clamping rod B307, an insertion port 308, and a sealing member 309. The tube A302 is embedded in one side of the test box 100, the tube B303 is embedded in the top of the test box 100, and the tube C304 is embedded in the other side of the test box 100. The internal clamping limit rod 301 of the tubes A302, B303, and C304 is connected, and the internal movably sleeved clamping rod A305 and clamping rod B307 of the tubes A302, B303, and C304 are fixedly connected to the outer walls of the clamping rod A305 and clamping rod B307. The outer walls of the tubes A302, B303, and C304 are fixedly connected to the spring clamp 306. An insert port 308 is provided inside the insert port 308, a sealing member 309 is provided inside the insert port 308, the spring clamp 306 comprises an outer cylinder 3061, a support rod 3062, a spring A3063, a sleeve rod 3064, and a circular plate 3065, the outer wall of the outer cylinder 3061 and the outer wall of the clamping rod A305 and the clamping rod B307 are fixedly connected, the support rod 3062 is fixedly installed inside the outer cylinder 3061, the outer wall of the support rod 3062 is wound around the spring A3063, the outer wall of the spring A3063 is fitted and connected to the rubber damping ring 3067, the outer wall of the rubber damping ring 3067 is fixedly connected to the sleeve rod 3064, the inner parts of the sleeve rod 3064 and the circular plate 3065 are mutually sleeved with the outer wall of the support rod 3062, and the outer wall of the sleeve rod 3064 is fixedly connected to the circular plate 3065;

[0037] In the process of the negative pressure pulling member 300 fixing the silicon material, the spring clamp 306 fixedly connected to the outer wall of the clamping rod A305 and the clamping rod B307 will come into contact with the silicon material. Figure 4 and Figure 3It can be seen that there are two spring clamps 306 and they are arranged oppositely. When the silicon material is placed at the relative distance between the two spring clamps 306, the circular plate 3065 and the sleeve rod 3064 will shrink toward the inside of the outer cylinder 3061, squeezing the spring A3063 attached to the bottom. When the spring A3063 is squeezed, a rebound force is generated to push the sleeve rod 3064 and the circular plate 3065 outward. At this time, the relative circular plates 3065 will form a clamping force on the silicon material at the distance, so that it can be fixed. Then the limit rod 301 is inserted through the insertion interface 308. Connected to the inside of tube A302, it can limit the length of the clamping rod A305 and the clamping rod B307 when they are contracted, so as to avoid tearing of the silicon material due to excessive contraction. It should be noted that the length of the clamping rod A305 and the clamping rod B307 installed inside tube B303 is twice the length of the clamping rod A305 and the clamping rod B307 installed inside tube A302 and tube C304, so as to facilitate the fixing and pulling of the silicon material. At the same time, the rubber damping ring 3067 fixedly connected to the bottom of the sleeve rod 3064 can absorb kinetic energy to avoid up and down shaking during the resetting process of the spring A3063.

[0038] In Example 3, the interior of the conveying member 400 includes a tube D401, a negative pressure tube 402, a flow cavity 4011, and a limiting opening 4012. The backs of tubes A302, B303, and C304 are fixedly connected to the negative pressure tube 402. The outer wall of the negative pressure tube 402 is fixedly connected to tube D401. A flow cavity 4011 is defined within tube D401. Three limiting openings 4012 are defined within tube D401. The interiors of the three limiting openings 4012 match the outer wall of the negative pressure tube 402. The diameter of the flow cavity 4011 is four times the diameter of the limiting openings 4012. An injection port 601 is defined within the side tube 600. One side of the bottom of the side tube 600 is fixedly connected to the other side of the bottom of the tube D401. The interior of the injection port 601 is inlaid with the outer wall of the metal tube 500.

[0039] At this time, the hot air flow is injected from the tube D401 into the interior of the flow cavity 4011, and is transported to the interior of the side tube 600 through the flow cavity 4011, and then injected into the interior of the metal tube 500 by the side tube 600, so as to facilitate the heat transport of the metal tube 500. It should be noted that the three limit ports 4012 are located on one side, the other side and the top of the tube D401. The limit ports 4012 and the negative pressure tube 402 are fixedly connected. As the air flow flows at a high speed inside the flow cavity 4011, and the negative pressure tube 402 and the limit ports are fixedly connected, the hot air flow is injected into the interior of the flow cavity 4011, and the negative pressure tube 402 and the limit ports are fixedly connected. The diameter of the opening 4012 is smaller than the flow cavity 4011, which causes negative pressure to be formed inside the negative pressure tube 402 and tubes A302, B303, and C304. When the negative pressure is formed, the clamping rods A305 and B307 exposed on the outer wall will shrink inward. At this time, the silicon material fixed by the clamping rods A305 and B307 will be subjected to a lateral and longitudinal pulling force, thereby testing the pulling strength of the silicon material. Compared with motor drive, this method can save resources and improve work efficiency.

[0040] In Example 4, the interior of tube A302 includes an inner tube 3021, an annular compartment 3022, a piston 3023, a slot 3024, a delivery tube 3025, a force reducing plate 3026, and an airbag 3027. The inner tube 3021 is fixedly installed inside the tube A302. The annular compartment 3022 is provided at the distance between the inner tube 3021 and the tube A302. The piston 3023 is movably sleeved inside the inner tube 3021. The slots 3024 are provided on both sides of the piston 3023. The force reducing plate 3026 is embedded in the slot 3024. The back of the force reducing plate 3026 is fixedly connected to both sides of the interior of the inner tube 3021. The back of the force reducing plate 3026 is also fixedly connected to the delivery tube 3025. The bottom of the delivery tube 3025 is fixedly connected to the airbag 3027. The bottom of the limiting rod 301 is fixedly connected to the plug rod 3011, and the bottom of the plug rod 3011 and the inside of the inner tube 3021 are plugged into each other. The interior of the seal 309 includes a semicircular rubber A3091, a semicircular rubber B3092, a fixed rod 3093, a telescopic rod 3094, and a spring B3095. The semicircular rubber A3091 and the semicircular rubber B3092 fit together and are located inside the plug interface 308. The fitting part of the semicircular rubber B3092 and the semicircular rubber A3091 is rounded. The semicircular rubber B3092 and the semicircular rubber A3091 are three groups, which are distributed in a linear array on the top of the inner tube 3021. The outer walls of the semicircular rubber B3092 and the semicircular rubber A3091 are fixedly connected to the telescopic rod 3094. The telescopic rod 309 4 is movably sleeved with the inner rod, and the outer wall of the inner rod is movably sleeved with the spring B3095. The three groups of semicircular rubbers A3091 are connected in series through the telescopic rod 3094. The top and sides of the annular compartment 3022 are fixedly connected to the semicircular rubbers B3092. The outer wall of the semicircular rubber B3092 is fixedly connected to the outer wall of the telescopic rod 3094. The interior of the force reducing plate 3026 includes a connecting cavity 30261, an air distribution pipe 30262, a friction airbag A30263, and a friction airbag B30264. The top and bottom of the force reducing plate 3026 are fixedly connected to the friction airbag A30263 and the friction airbag B30264. The friction airbag B30264 and the friction airbag A30263 are interconnected through the air distribution pipe 30262. The side is fixedly connected to the connecting cavity 30261, and the connecting cavity 30261 and the delivery tube 3025 are fixedly connected. The interior of the inner tube 3021 includes port A30211, a negative pressure port 30212, port B30213, a rubber sheet 30214, and a top port 30215. The top of the inner tube 3021 is provided with a top port 30215, the surface of the inner tube 3021 is provided with a port A30211, the bottom of the inner cavity of the inner tube 3021 is provided with a port B30213, the bottom of the port B30213 is fitted with the rubber sheet 30214, the outer wall of the rubber sheet 30214 and the outer wall of the bottom of the inner tube 3021 are fitted with each other, the back of the inner tube 3021 is provided with a negative pressure port 30212, and the outer wall of the negative pressure port 30212 is fixedly connected to the outer wall of the negative pressure tube 402.The inner parts of the clamping rod A305 and the clamping rod B307 are movably connected to the sleeve plate 310. The outer wall of the sleeve plate 310 is fixedly connected to the outer wall of the piston 3023. The outer wall of the sleeve plate 310 is fixedly connected to the rotating rod 3101. The rotating rod 3101 is located inside the clamping rod A305 and the clamping rod B307. The outer wall of the rotating rod 3101 is movably connected to the torsion spring 3102, and the torsion spring 3102 is located inside the clamping rod A305 and the clamping rod B307.

[0041] When negative pressure is generated in tubes A302, B303 and C304, the piston 3023 in the inner tube 3021 will move toward the side of the negative pressure tube 402, and the clamping rods A305 and B307 will be pulled toward the inside of the inner tube 3021. Figure 5 It can be seen that the clamping rod A305 and the clamping rod B307 are in the shape of pincers and expand outward. When moving inward, the clamping rod A305 and the clamping rod B307 will rub against the outer wall of the inner tube 3021, so that the above two parts will rotate on the outer wall of the rotating rod 3101, and then start relative movement, from an expanded state to a contracted state. During the contraction process, the outer cylinder 3061 connected to the outer walls of the above two parts will also move relative to each other, at this time forming a secondary fixation for the pulled silicon material. It should be noted that the clamping rod A305 and the clamping rod B307 will squeeze the torsion spring 3102 during the rotation on the rotating rod 3101. When the squeezing force of the above parts on the torsion spring 3102 disappears, the torsion spring 3102 will be reset, so that the clamping rod A305 and the clamping rod B307 can be restored to their original state. Compared with the existing spring clamping, this clamping is like tweezers. The closer the tube A302 is to the clamping end, the tighter it is fixed, and the limit When the positioning rod 301 is inserted into the inner tube 3021, because the middle parts of the semicircular rubber A 3091 and the semicircular rubber B 3092 are rounded, the plug rod 3011 fixedly connected to the bottom of the positioning rod 301 can quickly cut into the inside of the two. During the cutting process, the semicircular rubber A 3091 will move to one side of the annular cavity 3022, and the semicircular rubber B 3092 will move to the other side of the annular cavity 3022, so that the opening at the top of the inner tube 3021 is When the top opening 30215 is opened, the limit rod 301 can be inserted into the inside of the top opening 30215. When the semi-circular rubber B3092 and the semi-circular rubber A3091 are opened, the telescopic rod 3094 connected to the outer wall will squeeze the spring B3095 that fits together. When squeezed, a rebound force is generated to clamp the semi-circular rubber A3091 and the semi-circular rubber B3092 to the limit rod 301 that fits together, so that it is fixed at the plug-in position. The working principle is as follows: Figure 5It should be noted that the telescopic rod 3094 is movably sleeved with the inner rod, the outer wall of the inner rod is sleeved with the spring B3095, and the semicircular rubber A3091 and the semicircular rubber B3092 are three groups, which are all connected in series through the telescopic rod 3094. In the process of opening the semicircular rubber A3091 and the semicircular rubber B3092, it is possible that the semicircular rubber A3091 pushes the telescopic rod 3094 to retract the inner rod into the interior and squeeze the spring B3095, or it is possible that the semicircular rubber B3092 pushes the inner rod to retract into the interior of the telescopic rod 3094 and squeezes the spring B3095. The above two methods do not affect the opening, and the limit rod 301 is inserted into the inner tube 3021 to limit the piston 3023, so that the piston 3023 can only move to one side of the limit rod 301, so that the length of the contraction can be controlled to avoid excessive contraction and tearing of the silicone material. When the limit rod 301 is inserted into the inner tube 3021, the plug rod 3011 fixedly connected to the bottom of the limit rod 301 will be inserted into the inside of the port B30213. Because the bottom of the port B30213 is pasted with a rubber sheet 30214, the opening B30213 is opened. The bottom can be sealed by the rubber sheet 30214 to prevent external air from entering the inner tube 3021, ensuring that the interior can be in a negative pressure state. The rubber sheet 30214 has a certain degree of ductility. During the contact between the rubber sheet 30214 and the plug rod 3011, the rubber sheet 30214 can change with the direction of movement of the plug rod 3011, so that the plug rod 3011 can squeeze the bottom air bag 3027 through the rubber sheet 30214. At this time, the internal gas of the air bag 3027 will be transported into the interior of the force reducing plate 3026 through the delivery pipe 3025. The gas distribution pipe 30262 can be used to distribute the gas to the friction airbag A30263 and the friction airbag B30264 to make them expand. During the expansion process, a certain pressure will be applied to the piston 3023 connected to the outer wall. When the pressure increases, the friction force will also increase. When the above-mentioned clamping rod A305 and the clamping rod B307 are retracted, the outer wall will also generate friction with the inner tube 3021. These two friction forces can slow down the speed of the piston 3023 when it contracts, avoiding excessive contraction and damage to the silicon material. It should be noted that the internal structure of tube B303 and tube C304 is the same as that of tube A302.

[0042] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A silicone heat aging test device, characterized in that: include A test box (100), wherein a fixture (200) is fixedly installed on the upper surface of the inner cavity of the test box (100), a negative pressure pulling member (300) is embedded and installed inside the test box (100), a conveying member (400) is embedded and installed on the outer wall of the negative pressure pulling member (300), the bottom of the other side of the conveying member (400) is fixedly connected to a side tube (600), and the outer wall of the side tube (600) is fixedly connected to three metal tubes (500); The negative pressure pulling member (300) includes a limiting rod (301), a tube A (302), a tube B (303), a tube C (304), a clamping rod A (305), a spring clamp (306), a clamping rod B (307), an insertion port (308), and a sealing member (309). The tube A (302) is embedded in one side of the test box (100), the tube B (303) is embedded in the top of the test box (100), and the tube C (304) is embedded in the other side of the test box (100). The tube A (302), The internal clamping limit rod (301) of the tube B (303) and the tube C (304) is connected, and the internal movably sleeved clamp rod A (305) and clamp rod B (307) of the tube A (302), the tube B (303) and the tube C (304) are fixedly connected to the outer walls of the clamp rod A (305) and the clamp rod B (307) with a spring clamp (306). The internal parts of the tube A (302), the tube B (303) and the tube C (304) are provided with an insertion interface (308), and a sealing member (309) is provided inside the insertion interface (308); The interior of the tube A (302) comprises an inner tube (3021), an annular compartment (3022), a piston (3023), a slot (3024), a delivery tube (3025), a force reduction plate (3026), and an air bag (3027). The inner tube (3021) is fixedly installed inside the tube A (302). An annular compartment (3022) is provided at a distance between the inner tube (3021) and the tube A (302). The piston (3023) is movably sleeved inside the inner tube (3021). Both sides of the piston (3023) are provided with slots (3024). The force reduction plate (3026) is embedded and installed inside the slot (3024). The back side of the force reduction plate (3026) is fixedly connected to both sides of the inner tube (3021). The back side of the force reduction plate (3026) is also fixedly connected to the delivery tube (3025). Tube (3025), the bottom of the delivery tube (3025) is fixedly connected to the airbag (3027), the bottom of the limit rod (301) is fixedly connected to the plug rod (3011), the bottom of the plug rod (3011) and the inside of the inner tube (3021) are plugged into each other, the inside of the clamping rod A (305) and the clamping rod B (307) are movably connected to the sleeve plate (310), the outer wall of the sleeve plate (310) and the outer wall of the piston (3023) are fixedly connected, the outer wall of the sleeve plate (310) is fixedly connected to the rotating rod (3101), the rotating rod (3101) is located inside the clamping rod A (305) and the clamping rod B (307), the outer wall of the rotating rod (3101) is movably connected to the torsion spring (3102), and the torsion spring (3102) is located inside the clamping rod A (305) and the clamping rod B (307).

2. The organic silicon heat aging test device according to claim 1, characterized in that: The interior of the conveying member (400) includes a tube D (401), a negative pressure tube (402), a flow cavity (4011), and a limiting opening (4012). The back surfaces of the tubes A (302), B (303), and C (304) are fixedly connected to the negative pressure tube (402). The outer wall of the negative pressure tube (402) is fixedly connected to the tube D (401). The interior of the tube D (401) is provided with a flow cavity (4011). The interior of the tube D (401) is provided with three limiting openings (4012). The interiors of the three limiting openings (4012) and the outer wall of the negative pressure tube (402) are adapted to each other. The diameter of the flow cavity (4011) is four times the diameter of the limiting opening (4012).

3. The organic silicon heat aging test device according to claim 2, characterized in that: An injection port (601) is provided inside the side tube (600), one side of the bottom of the side tube (600) is fixedly connected to the other side of the bottom of the tube D (401), and the inside of the injection port (601) is embedded in the outer wall of the metal tube (500).

4. The organic silicon heat aging test device according to claim 1, characterized in that: The interior of the sealing member (309) includes a semicircular rubber A (3091), a semicircular rubber B (3092), a fixed rod (3093), a telescopic rod (3094), and a spring B (3095). The semicircular rubber A (3091) and the semicircular rubber B (3092) fit together and are located inside the plug interface (308). The fitting portion of the semicircular rubber B (3092) and the semicircular rubber A (3091) is rounded. The semicircular rubber B (3092) and the semicircular rubber A (3091) are three groups and are distributed in a linear array on the inner tube (302). 1), the outer walls of the semicircular rubber B (3092) and the semicircular rubber A (3091) are fixedly connected to the telescopic rod (3094), the interior of the telescopic rod (3094) is movably connected to the inner rod, and the outer wall of the inner rod is movably connected to the spring B (3095), and the three groups of semicircular rubbers A (3091) are connected in series through the telescopic rod (3094). The top two sides of the annular compartment (3022) are fixedly connected to the semicircular rubber B (3092), and the outer wall of the semicircular rubber B (3092) is fixedly connected to the outer wall of the telescopic rod (3094).

5. The organic silicon heat aging test device according to claim 1, characterized in that: The interior of the force reduction plate (3026) includes a connecting cavity (30261), an air distribution pipe (30262), a friction airbag A (30263), and a friction airbag B (30264). The top and bottom of the force reduction plate (3026) are fixedly connected to the friction airbag A (30263) and the friction airbag B (30264). The friction airbag B (30264) and the friction airbag A (30263) are interconnected via the air distribution pipe (30262). The side of the force reduction plate (3026) is fixedly connected to the connecting cavity (30261), and the connecting cavity (30261) and the delivery pipe (3025) are fixedly connected.

6. The organic silicon heat aging test device according to claim 1 or 2, characterized in that: The interior of the inner tube (3021) comprises a port A (30211), a negative pressure port (30212), a port B (30213), a rubber sheet (30214), and a top port (30215). The top of the inner tube (3021) is provided with a top port (30215), the surface of the inner tube (3021) is provided with a port A (30211), the bottom of the inner cavity of the inner tube (3021) is provided with a port B (30213), the bottom of the port B (30213) is fitted and connected to the rubber sheet (30214), the outer wall of the rubber sheet (30214) and the outer wall of the bottom of the inner tube (3021) are fitted together, the back of the inner tube (3021) is provided with a negative pressure port (30212), and the outer wall of the negative pressure port (30212) is fixedly connected to the outer wall of the negative pressure tube (402).

7. The organic silicon heat aging test device according to claim 1, characterized in that: The spring clamp (306) comprises an outer cylinder (3061), a support rod (3062), a spring A (3063), a sleeve rod (3064), and a circular plate (3065). The outer wall of the outer cylinder (3061) is fixedly connected to the outer walls of the clamping rod A (305) and the clamping rod B (307). The support rod (3062) is fixedly installed inside the outer cylinder (3061). The outer wall of the support rod (3062) is wound with the spring A (3063). The outer wall of the spring A (3063) is fitted and connected to the rubber damping ring (3067). The outer wall of the rubber damping ring (3067) is fixedly connected to the sleeve rod (3064). The inner parts of the sleeve rod (3064) and the circular plate (3065) are both sleeved with the outer wall of the support rod (3062). The outer wall of the sleeve rod (3064) is fixedly connected to the circular plate (3065).

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