Equipment for testing curing of resin in prepreg

Abstract

The invention relates to the technical field of resin curing testing, in particular to prepreg resin curing testing equipment which comprises an equipment rack, a curing agent adding assembly and a testing part, and the curing agent adding assembly is fixedly arranged on the upper portion of one side face of the equipment rack. By pressing a pressing handle downwards, under the connection action of a long straight spring and limiting pieces, two injection rods push two pistons downwards, a curing agent in two injection barrels is injected into two test material boxes, and after the two limiting pieces move downwards to be in contact with the outer walls of two butterfly bolts, the two pistons are driven by the two injection rods to push the two test material boxes. The limiting piece is stopped from moving downwards through the limiting effect of the two butterfly bolts, so that the accuracy of the volume of the curing agent injected into the test material box can be guaranteed, meanwhile, the convenience degree is high, use is easy, the moving-down distances of the left piston and the right piston are inconsistent, and the test accuracy is improved. Therefore, the quantity of the curing agent injected into the two test material boxes by the two injection cylinders is different, and the influence of different quantities of curing agents on epoxy resin curing is conveniently explored.

Description

Technical Field

[0001] The invention relates to the technical field of resin curing testing, in particular to a device for testing the curing of resin in a prepreg. Background Art

[0002] Prepreg is a composite of resin matrix and reinforcement made by impregnating continuous fibers or fabrics with resin matrix under strictly controlled conditions. According to physical state, prepreg is divided into unidirectional prepreg, unidirectional fabric prepreg, and fabric prepreg; according to different resin matrices, prepreg is divided into thermosetting resin prepreg and thermoplastic resin prepreg; according to different reinforcing materials, it is divided into (fabric) prepreg, glass fiber (fabric) prepreg, aramid (fabric) prepreg; according to different fiber lengths, it is divided into short fiber (below 4176mm) prepreg, long fiber (1217mm) prepreg and continuous fiber prepreg; according to different curing temperatures, it is divided into medium temperature curing (120℃) prepreg, high temperature curing (180℃) prepreg and prepreg with curing temperature exceeding 200℃, etc. In order to explore the influence of different factors on the curing of resin in prepreg, it is necessary to perform curing tests on it;

[0003] According to a Chinese patent with application publication number CN115356368A, a test device for realistically simulating the reactivity of pultrusion resin is disclosed. By setting a heating temperature zone component and a splitting component, the real heating scene of the pultrusion die on the resin can be realistically simulated. By setting a moving component to drive the resin loading component to move, the continuous temperature-time curve of the resin in the real pultrusion die environment can be measured. According to the factors affecting the curing of epoxy resin, the curing factors affecting the epoxy resin are largely related to the mixing ratio of temperature and curing agent. Therefore, the above-mentioned device only tests the influence on the curing of epoxy resin by temperature difference. The conditions are relatively simple and the test data is not comprehensive enough. Therefore, we propose a resin curing test device in prepreg to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: a prepreg resin curing test device, comprising a device frame, a curing agent adding component and a test component, wherein the curing agent adding component is fixedly arranged on the upper part of one side surface of the device frame, the test component is arranged inside the device frame, and two horizontally arranged access ports are provided on a side surface of the device frame close to the curing agent adding component;

[0005] The curing agent adding component comprises a U-shaped frame fixedly mounted on the upper side of one side of the equipment frame, the opposite surfaces of the U-shaped frame are penetrated with path grooves, the interior of the path grooves are movably plugged with butterfly bolts, the outer threads of the butterfly bolts are screwed with compression nuts, two horizontally arranged injection cylinders are fixedly mounted inside the U-shaped frame, pistons are slidably mounted inside the injection cylinders, an injection rod is fixedly mounted on the top of the piston, a long straight spring is fixedly mounted on the middle of the outer wall of the injection rod, a pressure handle is slidably mounted on the periphery of the two limiting plates, and the periphery of the limiting plates is sleeved with a long straight spring;

[0006] The test component includes two heating kilns fixedly installed inside the equipment frame, and a test material box is slidably installed inside the two heating kilns. Guide bars are fixedly installed on the inner walls on both sides of the left and right sides of the test material box, and the tops of the guide bars are provided with wave grooves. Two left and right telescopic holes are opened through the top of the heating kiln, and telescopic rods are slidably installed inside the telescopic holes. A stirring piece is fixedly installed on the bottom of the two telescopic rods, and a stretcher is fixedly installed on the outer walls of the two telescopic rods, and guide wheels are rotatably installed on both ends of the stretcher.

[0007] As a preferred solution of the present invention, the pressure handle is located at the top of the limiting plate, the long straight spring is fixedly installed between the top of the limiting plate and the bottom of the pressure handle, and the two injection cylinders are located at the top of the two loading and unloading ports.

[0008] As a preferred solution of the present invention, the test material box is slidably mounted on the left and right inner walls of the heating kiln through two linear guide rails arranged on the left and right, and the front of the heating kiln is opened.

[0009] As a preferred solution of the present invention, the guide wheel is located at the top of the guide bar, and the outer wall of the guide wheel abuts against the surface of the guide bar, the outer sleeve of the telescopic rod is provided with a reset spring, and the upper part of the outer wall of the telescopic rod is spirally screwed with a tensioning nut, and the reset spring is fixedly installed between the top of the heating kiln and the bottom of the tensioning nut.

[0010] As a preferred solution of the present invention, the stirring blades are arranged in a plurality of upper and lower positions, and the distance between two upper and lower adjacent stirring blades is constant.

[0011] As a preferred solution of the present invention, at least one electromagnet is fixedly mounted on the back of the heating kiln, and at least one strong magnet is fixedly mounted on the back of the test material box, and the position of the strong magnet corresponds to the position of the electromagnet.

[0012] As a preferred solution of the present invention, two aluminum alloy sliding doors distributed on the left and right are slidably installed on the inner side of the front side of the equipment frame, the two aluminum alloy sliding doors are located at the front ends of the two heating kilns, and the two aluminum alloy sliding doors are located on the rear sides of the two loading and unloading ports, the backs of the aluminum alloy sliding doors are in contact with the fronts of the heating kilns, and two electric cylinders distributed on the left and right are fixedly installed on the top wall of the equipment frame, the bottoms of the output rods of the two electric cylinders are respectively connected to the tops of the two aluminum alloy sliding doors through fixed angle codes, and the electric cylinders are electrically connected to the test material box.

[0013] As a preferred solution of the present invention, two front and rear explosion-proof tempered transparent glasses are fixedly embedded inside the aluminum alloy sliding door, and a vacuum is set between the front and rear explosion-proof tempered transparent glasses.

[0014] As a preferred solution of the present invention, a mounting hole is formed through the top of the heating kiln, and an industrial camera is fixedly installed on the top of the heating kiln. The industrial camera is located outside the opening of the mounting hole.

[0015] As a preferred solution of the present invention, the periphery of the heating kiln is wrapped with a ceramic insulation layer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, by pressing the pressure handle downward, under the connection action of the long straight spring and the limit plate, the two injection rods push the two pistons downward, and the curing agent inside the two injection cylinders is injected into the two test material boxes located at the bottom thereof. When the two limit plates move downward and contact the outer walls of the two butterfly bolts, the two limit plates will not continue to move downward due to the limiting action of the two butterfly bolts, thereby ensuring the accuracy of the amount of curing agent injected into the test material box, while being highly convenient and easy to use.

[0018] 2. In the present invention, by setting a certain difference in the height of the left and right butterfly bolts, after pressing the pressure handle downward, the left and right limit plates together with the left and right injection rods are driven by the left and right long straight springs to move downward, and the left and right pistons are pushed downward. When the bottom of one of the limit plates contacts the outer wall of the higher butterfly bolt, the limit plate stops moving downward, that is, the piston opposite to the limit plate stops moving, while the other limit plate continues to push the injection rod and the piston downward to move. The limit plate in contact with the surface of the butterfly bolt stops moving downward, so that under the continued downward pressure of the pressure handle, the long straight spring located on its top is compressed until the bottoms of the two limit plates contact the corresponding outer walls of the butterfly bolts. In this way, the downward movement distances of the left and right pistons can be inconsistent, and then the amount of curing agent injected into the two test material boxes by the two syringes can be different, thereby facilitating the exploration of the effects of different amounts of curing agent on the curing of epoxy resin.

[0019] 3. In the present invention, the movement of the test material box toward the interior of the heating kiln through the test component will drive the guide bars on the left and right inner walls thereof together with the wave groove to move, pushing the guide wheel upward. The guide wheel moves upward and drives the telescopic rod, the stirring plate and the tensioning nut to move upward through the stretcher, causing the reset spring to be stretched and stored. Then, during the continued movement of the guide bar and the rebound force of the compressed reset spring, the telescopic rod carries the stirring plate to reset and swing up and down, stirring the epoxy resin liquid and the curing agent inside the test material box to make them evenly mixed. In addition, by arranging multiple layers of stirring plates up and down in the device, the stirring intensity is further improved, the stirring efficiency is improved, and the test accuracy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the equipment rack in the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the curing agent adding component and the testing component in the present invention;

[0023] Figure 4 For the present invention Figure 3 A schematic diagram of the structure from a frontal perspective;

[0024] Figure 5 Detailed structural diagram of the test component in the present invention Figure 1 ;

[0025] Figure 6 Detailed structural diagram of the test component in the present invention Figure 2 ;

[0026] Figure 7 It is a detailed structural diagram of the guide strips and stirring blades in the present invention;

[0027] Figure 8 It is a detailed structural schematic diagram of the heating kiln in the present invention.

[0028] In the figure: 100, equipment frame; 101, access port; 200, curing agent adding component; 201, U-shaped frame; 202, path groove; 203, butterfly bolt; 204, clamping nut; 205, injection cylinder; 206, piston; 207, injection rod; 208, limit plate; 209, long straight spring; 2011, pressure handle; 300, test component; 301, heating kiln; 3001, telescopic hole; 30011, mounting hole; 302, test material box; 303, electromagnet; 304, strong magnet; 305, guide strip; 306, wave groove; 307, telescopic rod; 308, stirring plate; 309, stretcher; 3010, guide wheel; 3011, reset spring; 3012, tension nut; 401, aluminum alloy sliding door; 402, electric cylinder; 500, industrial camera. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-Figure 8 The technical solution provided by the present invention specifically includes the following embodiments:

[0031] Embodiment 1: A resin curing test device in a prepreg, comprising a device frame 100, a curing agent adding component 200 and a test component 300, wherein the curing agent adding component 200 is fixedly provided on the upper part of one side surface of the device frame 100, and the test component 300 is provided inside the device frame 100, and the device frame 100 is provided with two horizontally arranged access ports 101 on one side surface close to the curing agent adding component 200, and the curing agent adding component 200 comprises a U-shaped frame 201 fixedly installed on the upper part of one side surface of the device frame 100, and the opposite surfaces of the U-shaped frame 201 are penetrated with path grooves 202, and the inside of the path grooves 202 are movably plugged with butterfly bolts 203, and the outer side of the butterfly bolts 203 is provided with a butterfly bolt 203. A compression nut 204 is screwed around the thread, and two horizontally arranged injection cylinders 205 are fixedly installed inside the U-shaped frame 201. The two injection cylinders 205 are located at the top of the two access ports 101. Pistons 206 are slidably installed inside the injection cylinders 205, and an injection rod 207 is fixedly installed on the top of the piston 206. A long straight spring 209 is fixedly installed in the middle of the outer wall of the injection rod 207. A pressure handle 2011 is slidably installed on the periphery of the two limiting plates 208. The pressure handle 2011 is located on the top of the limiting plate 208. The periphery of the limiting plate 208 is sleeved with a long straight spring 209, and the long straight spring 209 is fixedly installed between the top of the limiting plate 208 and the bottom of the pressure handle 2011.

[0032] Specifically, in this embodiment, by pressing the handle 2011 downward, under the connection between the long straight spring 209 and the limiting plate 208, the two injection rods 207 push the two pistons 206 downward, and inject the curing agent inside the two injection barrels 205 into the two test material boxes 302 located at the bottom thereof. When the two limiting plates 208 move downward and contact the outer walls of the two butterfly bolts 203, the two limiting plates 208 will not continue to move downward due to the limiting effect of the two butterfly bolts 203, so that the accuracy of the volume of the curing agent injected into the test material box 302 can be guaranteed. In this device, by adjusting the position of the butterfly bolt 203 up and down, the downward movement distance of the limiting plate 208 can be limited, that is, the volume of the curing agent injected by the piston 206 inside the injection barrel 205 can be adjusted, so as to facilitate the exploration of the influence of curing agents with different mixing ratios on the curing of epoxy resin. When it is necessary to explore the influence of curing agents with different mixing ratios on the curing of epoxy resin, firstly, the heights of the left and right butterfly bolts 203 are set to a certain difference (such as the attached Figure 4 As shown in the figure, after pressing the handle 2011 downward, the two long straight springs 209 drive the two limit plates 208 and the two injection rods 207 to move downward, pushing the two pistons 206 downward. When the bottom of one of the limit plates 208 contacts the outer wall of a higher butterfly bolt 203, the limit plate 208 stops moving downward, that is, the piston 206 opposite to the limit plate 208 stops moving, while the other limit plate 208 continues to push the injection rod 207 and the piston 206 downward to move. A limit plate 208 in contact with the surface of the butterfly bolt 203 is interrupted from moving downward, so that the long straight spring 209 located on the top is compressed under the continued downward pressure of the pressure handle 2011, until the bottoms of the two limit plates 208 are in contact with the corresponding outer walls of the butterfly bolt 203. In this way, the downward movement distances of the left and right pistons 206 can be inconsistent, and then the amounts of curing agent injected into the two test material boxes 302 by the two syringes 205 can be different, thereby facilitating the study of the effects of different amounts of curing agent on the curing of epoxy resin.

[0033] Embodiment 2: The test component 300 includes two heating furnaces 301 fixedly installed inside the equipment frame 100. The outer periphery of the heating furnace 301 is wrapped with a ceramic heat insulation layer. The front of the heating furnace 301 is set as an opening. The two heating furnaces 301 are slidably installed with test material boxes 302. The test material boxes 302 are slidably installed with the left and right inner walls of the heating furnace 301 through two linear guide rails set on the left and right. Guide bars 305 are fixedly installed on the left and right inner walls of the test material boxes 302. The tops of the guide bars 305 are provided with wave grooves 306. The top of the heating furnace 301 is penetrated with two left and right telescopic holes 3001. The telescopic holes 3001 are slidably installed with telescopic rods 306. 07. A stirring blade 308 is fixedly installed at the bottom of the two telescopic rods 307. There are multiple stirring blades 308 arranged in upper and lower parts, and the spacing between two adjacent stirring blades 308 is constant. A stretcher 309 is fixedly installed on the outer walls of the two telescopic rods 307. Guide wheels 3010 are rotatably installed at both ends of the stretcher 309. The guide wheel 3010 is located at the top of the guide bar 305, and the outer wall of the guide wheel 3010 abuts against the surface of the guide bar 305. A reset spring 3011 is sleeved on the outer periphery of the telescopic rod 307. A tensioning nut 3012 is spirally screwed on the upper part of the outer wall of the telescopic rod 307. The reset spring 3011 is fixedly installed between the top of the heating kiln 301 and the bottom of the tensioning nut 3012.

[0034] Specifically, the present embodiment starts two electromagnets 303, and further controls the magnetic direction of the electromagnet 303 by controlling the flow direction of the current inside the electromagnet 303. The control of the current direction inside the electromagnet 303 in the present device can be operated by the existing technology, which will not be elaborated here. Initially, by controlling the flow direction of the current inside the electromagnet 303, the electromagnet 303 and the strong magnet 304 produce the same magnetic properties, resulting in a repulsive effect between the two, thereby pushing the strong magnet 304 in a direction away from the electromagnet 303. The electromagnet 303 is pushed to further drive the test material box 302 to extend from the opening on the front side of the heating kiln 301 under the precise guiding effect of the left and right linear guides, so as to facilitate the addition of epoxy resin liquid and curing agent into the interior of the test material box 302. After the curing agent is injected into the two syringes 205, the current direction of the electromagnet 303 is changed by controlling the change of the current direction of the electromagnet 303, so that the electromagnet 303 produces a magnetic property opposite to that of the strong magnet 304, and the strong magnet 304 is adsorbed in a direction close to the electromagnet 303. Further, the electromagnet 303 is driven The test material box 302 is reset to the inside of the heating kiln 301. At the same time, the movement of the test material box 302 to the inside of the heating kiln 301 will drive the guide bars 305 on the inner walls on the left and right sides thereof together with the wave groove 306 to move, pushing the guide wheel 3010 upward. The guide wheel 3010 moves upward and drives the telescopic rod 307, the stirring blade 308 and the tensioning nut 3012 to move upward through the stretcher 309, causing the reset spring 3011 to be stretched and stored. Then, during the continuous movement of the guide bar 305 and the compression Under the action of the rebound force of the return spring 3011, the telescopic rod 307 carries the stirring blade 308 to return and swing up and down, stirring the epoxy resin liquid and curing agent inside the test material box 302 to make them mixed evenly. In addition, the device further improves the stirring intensity and the stirring efficiency by arranging multiple layers of stirring blades 308 up and down, until the test material box 302 moves backward to the end position, and is heated at a constant temperature by two heating kilns 301 to solidify the epoxy resin liquid inside the test material box 302.

[0035] Embodiment 3: Two aluminum alloy sliding doors 401 distributed on the left and right are slidably installed on the inner side of the front of the equipment rack 100. The two aluminum alloy sliding doors 401 are located at the front ends of the two heating kilns 301, and the two aluminum alloy sliding doors 401 are located at the rear sides of the two access ports 101. The backs of the aluminum alloy sliding doors 401 are in contact with the fronts of the heating kilns 301. Two electric cylinders 402 distributed on the left and right are fixedly installed on the top wall of the equipment rack 100. The bottoms of the output rods of the two electric cylinders 402 are respectively connected to the tops of the two aluminum alloy sliding doors 401 through fixed angle codes, and the electric cylinders 402 are electrically connected to the test material box 302.

[0036] Specifically, in this embodiment, after the electromagnet 303 in the device is conductive, the PLC control system of the equipment will control the corresponding electric cylinder 402 to start, so that its output rod drives the aluminum alloy sliding door 401 to move upward, opening the access port 101, and at the same time, the aluminum alloy sliding door 401 moves upward, so that the test material box 302 can smoothly extend from the inside of the access port 101 and move to the bottom of the injection cylinder 205. When the test material box 302 is completely reset, the electromagnet 303 is powered off, and at the same time, the output rod of the electric cylinder 402 pushes the aluminum alloy sliding door 401 downward to move, and seal the opening on the front of the heating kiln 301 to prevent heat loss.

[0037] Furthermore, two front and rear explosion-proof tempered transparent glasses are fixedly embedded inside the aluminum alloy sliding door 401, and a vacuum is set between the front and rear explosion-proof tempered transparent glasses;

[0038] By arranging two layers of explosion-proof tempered transparent glass with a vacuum in the middle, the heat loss through the explosion-proof tempered transparent glass can be reduced.

[0039] Embodiment 4: A mounting hole 30011 is formed through the top of the heating kiln 301, and an industrial camera 500 is fixedly installed on the top of the heating kiln 301. The industrial camera 500 is located outside the opening of the mounting hole 30011;

[0040] Specifically, the present embodiment provides a mounting hole 30011 to facilitate the industrial camera 500 to photograph the interior of the test material box 302, and further uses two industrial cameras 500 to continuously monitor the curing degree of the epoxy resin inside the two test material boxes 302, so as to explore the influencing factors of epoxy resin curing.

[0041] When the resin curing test device for prepreg in this scheme is working, firstly, a proper amount of curing agent is filled into the interior of the two injection barrels 205 to facilitate the subsequent test of epoxy resin curing;

[0042] When it is necessary to explore the effect of different temperatures on the curing of epoxy resin, first adjust the left and right butterfly bolts 203 up and down along the inner walls of the left and right path grooves 202 to the same height, then lock the clamping nut 204 and the butterfly bolt 203, and through the clamping friction between the clamping nut 204 and the butterfly bolt 203 and the U-shaped frame 201, the top of the butterfly bolt 203 and the bottom of the limit plate 208 are kept at a set distance, and then the two injection cylinders 205 are preheated to keep their internal temperature at the set temperature, and then start the two electromagnets 303, and further control the flow direction of the internal current of the electromagnet 303. The magnetic direction of the electromagnet 303, the control of the current direction inside the electromagnet 303 in this device can be operated by existing technology, which will not be repeated here. Initially, by controlling the flow direction of the current inside the electromagnet 303, the electromagnet 303 and the strong magnet 304 produce the same magnetic properties, resulting in a repulsive effect between the two, thereby pushing the strong magnet 304 away from the electromagnet 303. The electromagnet 303 is pushed to further drive the test material box 302 to extend from the opening on the front side of the heating kiln 301 under the precise guidance of the left and right linear guides. It should be noted that after the electromagnet 303 in this device is conductive, the PL of the device The C control system will control the corresponding electric cylinder 402 to start, so that its output rod drives the aluminum alloy sliding door 401 to move upward, opening the access port 101. At the same time, the aluminum alloy sliding door 401 moves upward, so that the test material box 302 can smoothly extend from the access port 101 and move to the bottom of the injection barrel 205. Then, an equal amount of epoxy resin liquid is added to the inside of the left and right test material boxes 302. At this time, it is only necessary to press the pressure handle 2011 downward. Under the connection of the long straight spring 209 and the limit plate 208, the two injection rods 207 push the two pistons 206 downward to release the solid inside the two injection barrels 205. The curing agent is injected into the two test material boxes 302 at the bottom thereof. When the two limiting pieces 208 move downward and contact the outer walls of the two butterfly bolts 203, the two limiting pieces 208 will not continue to move downward due to the limiting effect of the two butterfly bolts 203, so that the accuracy of the volume of the curing agent injected into the test material box 302 can be ensured. In this device, by adjusting the position of the butterfly bolts 203 up and down, the downward movement distance of the limiting piece 208 can be limited, that is, the volume of the curing agent injected by the piston 206 inside the injection barrel 205 can be adjusted, so as to facilitate the study of the effects of curing agents with different mixing ratios on the curing of epoxy resin;

[0043] After the curing agent is injected into the two syringes 205, the current direction of the electromagnet 303 is controlled to change, so that the electromagnet 303 generates magnetism opposite to that of the strong magnet 304, and the strong magnet 304 is attracted in the direction close to the electromagnet 303, and the electromagnet 303 further drives the test material box 302 to reset to the inside of the heating kiln 301. At the same time, the movement of the test material box 302 to the inside of the heating kiln 301 will drive the guide bars 305 on the inner walls on the left and right sides thereof together with the wave grooves 306 to move together, pushing the guide wheel 3010 upward. The guide wheel 3010 moves upward and drives the telescopic rod 307, the stirring blade 308 and the tensioning nut 3012 to move upward through the stretcher 309, causing the reset spring 3011 to be stretched and stored, thereby During the continued movement of the guide bar 305 and the rebound force of the compressed return spring 3011, the telescopic rod 307 carries the stirring blade 308 to return and swing up and down, stirring the epoxy resin liquid and curing agent inside the test material box 302 to make them evenly mixed. In addition, the device further improves the stirring intensity and the stirring efficiency by setting up multiple layers of stirring blades 308 up and down, until the test material box 302 moves backward to the end position, and the epoxy resin liquid inside the test material box 302 is cured by constant temperature heating by two heating kilns 301. During this period, the two industrial cameras 500 continuously monitor the curing degree of the epoxy resin inside the two test material boxes 302, so as to explore the influence of different temperatures on the curing of epoxy resin.

[0044] When the test material box 302 is completely reset, the electromagnet 303 is powered off, and at the same time, the output rod of the electric cylinder 402 pushes the aluminum alloy sliding door 401 downward to seal the opening on the front of the heating kiln 301 to prevent heat loss;

[0045] When it is necessary to explore the effect of different mixing ratios of curing agents on the curing of epoxy resin, firstly, the heights of the left and right butterfly bolts 203 are set to be different (as shown in the attached figure). Figure 4As shown in the figure, after pressing the handle 2011 downward, the two long straight springs 209 drive the two limit plates 208 and the two injection rods 207 to move downward, pushing the two pistons 206 downward. When the bottom of one of the limit plates 208 contacts the outer wall of a higher butterfly bolt 203, the limit plate 208 stops moving downward, that is, the piston 206 opposite to the limit plate 208 stops moving, while the other limit plate 208 continues to push the injection rod 207 and the piston 206 downward to move. A limit plate 208 in contact with the surface of the butterfly bolt 203 is interrupted from moving downward, so that the long straight spring 209 located on the top is compressed under the continued downward pressure of the pressure handle 2011, until the bottoms of the two limit plates 208 are in contact with the corresponding outer walls of the butterfly bolt 203. In this way, the downward movement distances of the left and right pistons 206 can be inconsistent, and then the amounts of curing agent injected into the two test material boxes 302 by the two syringes 205 can be different, thereby facilitating the study of the effects of different amounts of curing agent on the curing of epoxy resin.

[0046] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A prepreg resin curing test device, comprising a device frame (100), a curing agent adding component (200) and a test component (300), characterized in that: A curing agent adding assembly (200) is fixedly provided on an upper portion of one side surface of the equipment frame (100), a testing component (300) is provided inside the equipment frame (100), and two horizontally arranged access ports (101) are provided on a side surface of the equipment frame (100) close to the curing agent adding assembly (200); The curing agent adding component (200) comprises a U-shaped frame (201) fixedly mounted on the upper side of one side of the equipment frame (100); the opposite surfaces of the U-shaped frame (201) are penetrated with path grooves (202); butterfly bolts (203) are movably inserted inside the path grooves (202); the outer periphery of the butterfly bolts (203) are threadedly screwed with a clamping nut (204); two horizontally arranged injection cylinders (205) are fixedly mounted inside the U-shaped frame (201); pistons (206) are slidably mounted inside the injection cylinders (205); an injection rod (207) is fixedly mounted on the top of the piston (206); a long straight spring (209) is fixedly mounted on the middle part of the outer wall of the injection rod (207); a pressure handle (2011) is slidably mounted on the periphery of the two limiting plates (208); and the periphery of the limiting plates (208) is sleeved with a long straight spring (209); The test component (300) includes two heating furnaces (301) fixedly installed inside the equipment frame (100), and a test material box (302) is slidably installed inside the two heating furnaces (301). Guide bars (305) are fixedly installed on the inner walls on both sides of the test material box (302), and the tops of the guide bars (305) are provided with wave grooves (306). The top of the heating furnace (301) is penetrated by two left and right telescopic holes (3001), and a telescopic rod (307) is slidably installed inside the telescopic hole (3001). A stirring piece (308) is fixedly installed at the bottom of the two telescopic rods (307), and a stretcher (309) is fixedly installed on the outer walls of the two telescopic rods (307). Guide wheels (3010) are rotatably installed at both ends of the stretcher (309).

2. The resin curing test equipment in prepreg according to claim 1, characterized in that: The pressure handle (2011) is located at the top of the limiting plate (208), the long straight spring (209) is fixedly installed between the top of the limiting plate (208) and the bottom of the pressure handle (2011), and the two injection cylinders (205) are located at the top of the two taking and placing ports (101).

3. The resin curing test equipment in prepreg according to claim 2, characterized in that: The test material box (302) is slidably mounted on the left and right inner walls of the heating kiln (301) via two linear guide rails arranged on the left and right, and the front of the heating kiln (301) is opened.

4. The prepreg resin curing test device according to claim 3, characterized in that: The guide wheel (3010) is located at the top of the guide bar (305), and the outer wall of the guide wheel (3010) is in contact with the surface of the guide bar (305). The outer periphery of the telescopic rod (307) is provided with a reset spring (3011). The upper part of the outer wall of the telescopic rod (307) is spirally screwed with a tensioning nut (3012). The reset spring (3011) is fixedly installed between the top of the heating kiln (301) and the bottom of the tensioning nut (3012).

5. The prepreg resin curing test device according to claim 4, characterized in that: The stirring blades (308) are arranged in a plurality of upper and lower positions, and the distance between two adjacent stirring blades (308) is constant.

6. The prepreg resin curing test device according to claim 5, characterized in that: At least one electromagnet (303) is fixedly mounted on the back of the heating kiln (301), and at least one strong magnet (304) is fixedly mounted on the back of the test material box (302), and the position of the strong magnet (304) corresponds to the position of the electromagnet (303).

7. The prepreg resin curing test device according to claim 6, characterized in that: Two aluminum alloy sliding doors (401) distributed on the left and right are slidably installed on the inner side of the front of the equipment frame (100), the two aluminum alloy sliding doors (401) are located at the front ends of the two heating kilns (301), and the two aluminum alloy sliding doors (401) are located at the rear sides of the two loading and unloading ports (101), the backs of the aluminum alloy sliding doors (401) are in contact with the fronts of the heating kilns (301), and two electric cylinders (402) distributed on the left and right are fixedly installed on the top wall of the equipment frame (100), the bottoms of the output rods of the two electric cylinders (402) are respectively connected to the tops of the two aluminum alloy sliding doors (401) through fixed angle codes, and the electric cylinders (402) are electrically connected to the test material box (302).

8. The prepreg resin curing test device according to claim 7, characterized in that: Two front and rear explosion-proof tempered transparent glasses are fixedly embedded inside the aluminum alloy sliding door (401), and a vacuum is provided between the front and rear explosion-proof tempered transparent glasses.

9. The prepreg resin curing test device according to claim 8, characterized in that: The top of the heating kiln (301) is penetrated by a mounting hole (30011), and an industrial camera (500) is fixedly mounted on the top of the heating kiln (301), and the industrial camera (500) is located outside the opening of the mounting hole (30011).

10. The prepreg resin curing test device according to claim 9, characterized in that: The periphery of the heating kiln (301) is wrapped with a ceramic heat insulation layer.

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