Organic silicon heat-resistant aging test device

Abstract

The invention discloses an organic silicon heat-resistant aging test device, and relates to the technical field of organic silicon experiments.A negative pressure dragging piece and a conveying piece are used in a combined mode, air flow flows in a pipe D at a high speed, negative pressure is formed in the negative pressure dragging piece, a clamping piece can contract, a silicon material is dragged during contraction, and compared with motor driving, the heat-resistant aging test device has the advantage that the heat-resistant aging test efficiency is greatly improved. According to the driving mode, more resources are saved, as airflow flows in the flowing cavity at a high speed, and the caliber of the negative pressure pipe and the caliber of the limiting opening are both smaller than that of the flowing cavity, negative pressure is formed in the negative pressure pipe, the pipe A, the pipe B and the pipe C, and when the negative pressure is formed, the clamping rod A and the clamping rod B exposed on the outer wall shrink inwards; at the moment, the clamping rod A and the fixed silicon material are subjected to transverse and longitudinal traction force, so that the traction strength of the silicon material can be tested, and compared with motor driving, the mode can save resources and enhance the working 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, the test will also help 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 installed 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 with a transmission gear, and connecting pipes are arranged on both sides of the test box; a connecting screw, 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 arranged at the bottom of the connecting seat, and a rotating rod is arranged inside the docking seat, and A clamping plate is arranged on the outer side of the rotating rod; a docking plate is welded and connected 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, so as to realize 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 carry out aging test and pulling test at the same time, the above pulling test requires another motor to pull the silicone material, which consumes certain resources during 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 drive the pulling member to pull the silicon material by forming a negative pressure difference through high-speed airflow, thereby avoiding the need for motor drive during the working process, and then by limiting the inside of the pulling member, the problem of tearing caused by the pulling when the silicon material is pulled to the limit is solved, and a silicone heat-resistant aging test device is provided.

[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 is fixedly installed on the upper surface of the inner cavity of the test box, a negative pressure pulling part is inlaid and installed inside the test box, a conveying part is inlaid and installed on the outer wall of the negative pressure pulling part, the other side of the conveying part is fixedly connected to the bottom of the 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 sealing member. 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 clamp rods A and B are movably sleeved inside the tubes A, B, and C. The outer walls of the clamp rods A and B are fixedly connected to the spring clamp, and plug interfaces are provided inside the tubes A, B, and C, and seals are arranged 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 provided inside the tube D; three limit ports are provided inside the tube D; the interiors of the three limit ports and the outer wall of the negative pressure tube are matched with each other; and 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 provided 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 and installed with the outer wall of the metal tube.

[0010] As a further scheme 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 force reducing plate is inlaid and installed inside the slot. The back side of the force reducing plate is fixedly connected to the inner sides of the inner tube, and the back side of the force reducing plate is also fixedly connected to the delivery tube. The bottom of the delivery tube is fixedly connected to the air bag, and 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, and the outer wall of the sleeve plate is fixedly connected to a 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 sealing member 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 each other 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, which are 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 sleeved with the inner rod, and the outer wall of the inner rod is movably sleeved with the spring B. The three groups of semicircular rubber A are connected in series through the telescopic rod, and the semicircular rubber B is fixedly connected to 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 energy 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 energy 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 energy 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 and connected to the 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 is fixedly connected to the outer walls of the clamping rod A and the clamping rod B. The support rod is fixedly installed inside the outer cylinder. The spring A is wrapped around the outer wall of the support rod. The outer wall of the spring A is fit-connected to a 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 mutually 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 using the negative pressure pulling piece and the conveying piece in combination, the airflow is used to flow at high speed inside the tube D, so that negative pressure is formed inside the negative pressure pulling piece, causing the clamped and to shrink, and the silicon material is pulled when shrinking. Compared with motor drive, this driving method saves more resources. As the airflow flows at high speed inside the flow cavity, and the diameter of the negative pressure tube and the limit port are smaller than the flow cavity, this causes negative pressure to be 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 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;

[0017] 2. By using the limit rod and the force reduction plate in combination, the limit rod can be used to limit the contraction length of the piston during the contraction process to avoid tearing damage to the silicone material caused by excessive contraction. The limit rod can also increase the friction between the force reduction 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 to avoid excessive contraction and tearing of the silicone material. Then, the gas distribution pipe can be used to distribute the gas to the friction airbag A and the friction airbag B to make them expand. During the expansion process, a certain friction force will be caused to the piston connected to the outer wall. Therefore, the friction force generated by the outer wall and the inner tube when the clamp rod A and the clamp rod B are recovered, the two friction forces can slow down the speed of the piston contraction to avoid 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 clamp rod A, the spring clamp and the clamp rod B in combination, the spring clamp can be used to initially clamp the silicon material, while the clamp rods B and A can clamp the silicon material for a second time, so as to prevent the reset force generated when the silicon material is pulled to the limit again from causing it to break away from the clamp of the spring clamp. When moving inward, the clamp rods A and B will rub against the outer wall of the inner tube, so that the above two parts will 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, at this time, a secondary fixation is formed 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 schematic diagram of the structure;

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

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the energy reducing plate of the present invention;

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the inner tube of the present invention;

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

[0028] Fig.10 It is a schematic diagram of the overall structure of the conveying member of the present invention;

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

[0030] In the figure: 100, test box; 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 reduction 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, clamp rod A; 306, spring clamp; 3061, outer cylinder; 3062, support rod; 3063, spring A; 3064, sleeve rod; 3065, round plate; 3067, rubber damping ring; 307, clamp rod B; 308, plug interface; 309, sealing element; 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 element; 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot 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, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. 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 is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0033] Example 1

[0034] See also Figures 1 to 11 The present embodiment provides a heat aging test device for organic silicon, comprising a test box 100, 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 inlaid and installed inside the test box 100, a conveying member 400 is inlaid and installed on the outer wall of the negative pressure pulling member 300, a side tube 600 is fixedly connected to the bottom of the other side of the conveying member 400, and three metal tubes 500 are 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 by the negative pressure pulling member 300. At this time, hot air flow is injected through the conveying member 400. As the air flow flows at high speed inside the conveying member 400, negative pressure is formed inside the negative pressure pulling member 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 clamp rod A305, a spring clamp 306, a clamp 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 limit rod 301 is clamped inside the tubes A302, B303, and C304, and the clamp rod A305 and the clamp rod B307 are movably sleeved inside the tubes A302, B303, and C304. The outer walls of the clamp rods A305 and B307 are fixedly connected to the spring clamp 306. The tubes A302, B303, and C304 The plug-in port 308 is provided inside, and a sealing member 309 is provided inside the plug-in 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 are fixedly connected with the outer wall of the clamping rod B307. The support rod 3062 is fixedly installed inside the outer cylinder 3061. The spring A3063 is wound around the outer wall of the support rod 3062. The outer wall of the spring A3063 is fitted and connected with a rubber damping ring 3067. The outer wall of the rubber damping ring 3067 is fixedly connected with 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. The outer wall of the sleeve rod 3064 is fixedly connected with 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 clamp rod A 305 and the clamp rod B 307 will contact the silicon material. Figure 4 and Figure 3It can be seen that there are two spring clamps 306 and they are arranged opposite to each other. When the silicon material is placed at the relative spacing 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 will be formed 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 spacing, 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 clamp rod A305 and clamp 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 clamp rod A305 and clamp rod B307 installed inside tube B303 is twice the length of clamp rod A305 and clamp rod B307 installed inside tube A302 and tube C304, so as to facilitate the fixing and pulling of 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 of spring A3063 during the resetting process.

[0038] Embodiment 3, the interior of the conveying member 400 includes a tube D401, a negative pressure tube 402, a flow cavity 4011, and a limiting port 4012. The backs of the 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 the tube D401. The interior of the tube D401 is provided with a flow cavity 4011. The interior of the tube D401 is provided with three limiting ports 4012. The interiors of the three limiting ports 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 port 4012. The interior of the side tube 600 is provided with an injection port 601. 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 and the outer wall of the metal tube 500 are inlaid and installed.

[0039] At this time, the hot air flow is injected from the tube D401 into the flow cavity 4011, and then transported to the inside of the side tube 600 through the flow cavity 4011, and then injected into the inside of the metal tube 500 by the side tube 600, so as to facilitate the heat transport of the metal tube 500. The three limit ports 4012 to be explained are located on one side, the other side and the top of the tube D401, and 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 The caliber of port 4012 is smaller than that of flow cavity 4011, which results in negative pressure being formed inside negative pressure tube 402 and tube A302, tube B303, and tube C304. When negative pressure is formed, clamping rods A305 and B307 exposed on the outer wall will be contracted inward. At this time, the silicon material fixed by 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] Embodiment 4: The interior of tube A302 comprises 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 air bag 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 and installed inside the slot 3024. The back side of the force reducing plate 3026 is fixedly connected to the inner sides of the inner tube 3021. The back side 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 air bag 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 sealing member 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 each other and are located inside the plug interface 308. The fitting part between 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 an inner rod, and an outer wall of the inner rod is movably sleeved with a spring B3095. Three groups of semicircular rubbers A3091 are connected in series through a telescopic rod 3094. Both sides of the top 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 reduction 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 reduction 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, the connecting cavity 30261 and the delivery pipe 3025 are fixedly connected, the interior of the inner tube 3021 includes a port A30211, a negative pressure port 30212, a 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 and connected 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 with 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 moves toward one side of the negative pressure tube 402, and the clamping rods A305 and B307 are pulled toward the inside of the inner tube 3021. Figure 5 It can be seen that the clamp rod A305 and the clamp rod B307 are in the shape of pincers and expand outward. When moving inward, the clamp rod A305 and the clamp 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 tube 3061 connected to the outer walls of the above two parts will also move relative to each other, at this time, a secondary fixation is formed for the pulled silicon material. It should be noted that the clamp rod A305 and the clamp 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 reset, so that the clamp rod A305 and the clamp rod B307 can be restored to their original state. Compared with the existing spring clamping, this clamping is the same as 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-in 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 moves to one side of the annular cavity 3022, and the semicircular rubber B 3092 moves to the other side of the annular cavity 3022, so that the opening at the top of the inner tube 3021 is The top opening 30215 is opened, so that the limit rod 301 can be inserted into the inside of the top opening 30215. When the semicircular rubber B3092 and the semicircular rubber A3091 are opened, the telescopic rod 3094 connected to the outer wall will squeeze the fitted spring B3095, and the squeezing will form a rebound force to clamp the semicircular rubber A3091 and the semicircular rubber B3092 to the fitted limit rod 301 to fix it at the insertion 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 connected in series through the telescopic rod 3094. In the process of the semicircular rubber A3091 and the semicircular rubber B3092 opening, 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 telescopic rod 3094 and squeezes the spring B3095. The above two methods do not affect the opening, and the limit rod 301 inserted into the inner tube 3021 can 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 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 plug rod 3011 fixedly connected to the bottom of the limit rod 301 will be inserted into the inside of the port B30213. 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 along with the direction of movement of the plug rod 3011, so that the plug rod 3011 can squeeze the bottom airbag 3027 through the rubber sheet 30214. At this time, the internal gas of the airbag 3027 will be transported into the interior of the energy 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 clamped on 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 recovered, 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 shrinks, avoiding excessive shrinkage 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] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope 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 other side bottom 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).

2. The organic silicon heat aging test device according to claim 1, characterized in that: 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 tubes B (303) and C (304) are internally connected with a limit rod (301); the tubes A (302), B (303) and C (304) are internally movably connected with a clamp rod A (305) and a clamp rod B (307); the outer walls of the clamp rod A (305) and the clamp rod B (307) are fixedly connected with a spring clamp (306); the tubes A (302), B (303) and C (304) are internally provided with an insertion interface (308); and a sealing member (309) is provided inside the insertion interface (308).

3. The organic silicon heat aging test device according to claim 2, characterized in that: The interior of the conveying member (400) comprises 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 mutually adapted; and the diameter of the flow cavity (4011) is four times the diameter of the limiting opening (4012).

4. The organic silicon heat aging test device according to claim 3, characterized in that: The side tube (600) has an injection port (601) formed inside, 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).

5. The organic silicon heat aging test device according to claim 2, characterized in that: 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 reducing 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 reducing plate (3026) is embedded and installed inside the slot (3024). The back side of the force reducing plate (3026) is fixedly connected to both sides of the inner tube (3021). The back side of the force reducing 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 clamp rod A (305) and the clamp 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 clamp rod A (305) and the clamp 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 clamp rod A (305) and the clamp rod B (307).

6. The organic silicon heat aging test device according to claim 2 or 5, characterized in that: The interior of the sealing member (309) includes a semicircular rubber A (3091), a semicircular rubber B (3092), a fixing rod (3093), a telescopic rod (3094), and a spring B (3095). The semicircular rubber A (3091) and the semicircular rubber B (3092) fit each other 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 sleeved with the inner rod, and the outer wall of the inner rod is movably sleeved with the spring B (3095), 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).

7. The organic silicon heat aging test device according to claim 5, 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.

8. The organic silicon heat aging test device according to claim 3 or 5, 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 to each other; the back of the inner tube (3021) is provided with a negative pressure port (30212); the outer wall of the negative pressure port (30212) and the outer wall of the negative pressure tube (402) are fixedly connected.

9. The organic silicon heat aging test device according to claim 2, 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) and the outer walls of the clamp rod A (305) and the clamp rod B (307) are fixedly connected; the support rod (3062) is fixedly installed inside the outer cylinder (3061); the spring A (3063) is wound around the outer wall of the support rod (3062); the outer wall of the spring A (3063) is fitted and connected to a 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).

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