A test device for resin curing in prepreg

Abstract

The present invention relates to the field of resin curing test technology, specifically a resin curing test device in prepreg, comprising an equipment frame, a curing agent adding assembly and a test component, wherein the curing agent adding assembly is fixedly provided on the upper side of one side surface of the equipment frame. 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 syringes is injected into the two test material boxes. When the two limit plates move downward and contact the outer walls of the two butterfly bolts, the limit plates are interrupted from moving downward by the limiting action of the two butterfly bolts, thereby ensuring the accuracy of the amount of curing agent injected into the test material box. At the same time, the device is highly convenient and easy to use, and the downward movement distance of the left and right pistons can be made inconsistent, thereby making the amount of curing agent injected into the two test material boxes by the two syringes different, which is convenient for exploring the effects of different amounts of curing agent on epoxy resin curing.

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 prepreg. Background Art

[0002] Prepreg is a composite of a resin matrix and reinforcement made by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions. According to the physical state, prepregs are divided into unidirectional prepregs, unidirectional fabric prepregs, and fabric prepregs. According to the resin matrix, prepregs are divided into thermosetting resin prepregs and thermoplastic resin prepregs. According to the reinforcement material, prepregs are divided into (fabric) prepregs, glass fiber (fabric) prepregs, and aramid (fabric) prepregs. According to the fiber length, prepregs are divided into short fiber (less than 4176mm) prepregs, long fiber (1217mm) prepregs, and continuous fiber prepregs. According to the curing temperature, prepregs are divided into medium temperature curing (120℃) prepregs, high temperature curing (180℃) prepregs, and prepregs with a curing temperature exceeding 200℃. In order to explore the influence of different factors on the curing of the resin in the prepreg, curing tests are required.

[0003] According to a Chinese patent application with the publication number CN115356368A, a test device for realistically simulating the reactivity of pultruded resin is disclosed. By setting a heating temperature zone component and a splitting component, the actual heating scene of the pultrusion die on the resin can be realistically simulated. By setting a moving component to drive the movement of the resin loading component, the continuous temperature-time curve of the resin in the real pultrusion die environment can be measured. The occurrence is explored based on the factors affecting the curing of the epoxy resin. The factors affecting the curing of the epoxy resin are largely related to the mixing ratio of the temperature and the curing agent. Therefore, the above-mentioned device only tests the influence on the curing of the epoxy resin by temperature difference. The conditions are relatively simple and the test data is not comprehensive. 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 device for testing the curing of resin in prepreg, comprising a device frame, a curing agent addition assembly, and a testing component, wherein the curing agent addition assembly is fixedly provided on an upper portion of one side surface of the device frame, the testing component is provided inside the device frame, and two horizontally arranged access ports are provided on a side surface of the device frame adjacent to the curing agent addition assembly;

[0005] The curing agent adding assembly includes 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 by 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 part 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 of the left and right sides of the test material box, and the tops of the guide bars are provided with wave grooves. Two telescopic holes are opened on 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. 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 taking and placing 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 open.

[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. 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, there are a plurality of stirring blades arranged in an upper and lower position, and the distance between two adjacent stirring blades in an upper and lower position is constant.

[0011] As a preferred solution of the present invention, at least one electromagnet is fixedly mounted on the back of the heating furnace, 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 of the equipment rack. The two aluminum alloy sliding doors are located at the front end of the two heating kilns, and the two aluminum alloy sliding doors are located on the rear side of the two picking and placing ports. The back of the aluminum alloy sliding door is in contact with the front of the heating kiln. Two electric cylinders distributed on the left and right are fixedly installed on the top wall of the equipment rack. The bottom of the output rods of the two electric cylinders are respectively connected to the top of the two aluminum alloy sliding doors through fixed angle codes, and the electric cylinder is 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, the two injection rods push the two pistons downward under the connection action of the long straight spring and the limit plate, and the curing agent inside the two syringes 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 volume of curing agent injected into the test material box. At the same time, it is more 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 long straight springs drive the left and right limit plates together with the left and right injection rods to move downward, pushing the left and right pistons 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 at its top is compressed until the bottoms of the two limit plates contact the outer walls of the corresponding 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 study 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 piece 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 piece to reset and swing up and down, stirring the epoxy resin liquid and curing agent inside the test material box to make them evenly mixed. In addition, by arranging multiple layers of stirring pieces in the upper and lower layers, 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 Schematic diagram of the internal structure of the equipment rack in the present invention;

[0022] Figure 3 This 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 Schematic diagram of the front view structure;

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

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

[0026] Figure 7 Schematic diagram of the detailed structure of the guide bars and stirring blades in the present invention;

[0027] Figure 8 Schematic diagram of the detailed structure of the heating kiln in the present invention.

[0028] In the figure: 100, equipment frame; 101, access port; 200, curing agent addition component; 201, U-shaped frame; 202, path groove; 203, butterfly bolt; 204, tightening 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 bar; 306, wave groove; 307, telescopic rod; 308, stirring blade; 309, stretcher; 3010, guide wheel; 3011, return spring; 3012, tensioning nut; 401, aluminum alloy sliding door; 402, electric cylinder; 500, industrial camera. DETAILED DESCRIPTION

[0029] 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.

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

[0031] Embodiment 1: A resin curing test device for prepreg, comprising a device frame 100, a curing agent adding assembly 200 and a test component 300, wherein the curing agent adding assembly 200 is fixedly provided on the upper side of one side 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 close to the curing agent adding assembly 200, and the curing agent adding assembly 200 comprises a U-shaped frame 201 fixedly mounted on the upper side of one side of the device frame 100, and the opposite surfaces of the U-shaped frame 201 are penetrated by path grooves 202, and the interior of the path grooves 202 are movably plugged with butterfly bolts 203, and the butterfly bolts 203 are provided with a plurality of slits. A compression nut 204 is screwed onto the outer thread. 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. A piston 206 is slidably installed inside the injection cylinder 205. An injection rod 207 is fixedly installed on the top of the piston 206. A long straight spring 209 is fixedly installed on 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 at the top of the limiting plate 208. The periphery of the limiting plate 208 is sleeved with a long straight spring 209. 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, the two injection rods 207 push the two pistons 206 downward under the connection between the long straight spring 209 and the limiting piece 208, and the curing agent inside the two syringes 205 is injected into the two test material boxes 302 located 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 move downward further due to the limiting effect of the two butterfly bolts 203, so as to ensure the accuracy of the volume of curing agent injected into the test material box 302. In this device, by adjusting the position of the butterfly bolt 203 up and down, the downward movement distance of the limiting piece 208 can be limited, that is, the volume of curing agent injected by the piston 206 into the syringe 205 can be adjusted, so as to facilitate the study of the effect of curing agents with different mixing ratios on the curing of epoxy resin. When it is necessary to study the effect of curing agents with different mixing ratios on the curing of epoxy resin, first, the heights of the left and right butterfly bolts 203 are set to a certain difference (as shown in the attached figure). Figure 4 As shown), after the handle 2011 is pressed downward, the two long straight springs 209 on the left and right drive the two limit plates 208 on the left and right together with the two injection rods 207 to move downward, pushing the two pistons 206 on the left and right downward. When the bottom of one of the limit plates 208 contacts the outer wall of the 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 under the continued downward pressure of the pressure handle 2011, the long straight spring 209 located on its top is compressed until the bottoms of the two limit plates 208 are in contact with the outer walls of the corresponding butterfly bolt 203. In this way, the downward movement distances of the left and right pistons 206 can be inconsistent, and the amount 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] Example 2: The test component 300 includes two heating furnaces 301 fixedly installed inside the equipment rack 100. The outer periphery of the heating furnace 301 is wrapped with a ceramic insulation layer. The front of the heating furnace 301 is set to be open. 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 each provided with a wave groove 306. The top of the heating furnace 301 is penetrated by 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 set up in the upper and lower parts, and the spacing between two adjacent stirring blades 308 is constant. A stretcher 309 is fixedly installed on the outer wall 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 return spring 3011 is provided 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 return spring 3011 is fixedly installed between the top of the heating kiln 301 and the bottom of the tensioning nut 3012.

[0034] Specifically, this embodiment starts the two electromagnets 303 and controls the direction of the current flowing inside the electromagnets 303 to further control the magnetic direction of the electromagnets 303. In this device, the direction of the current flowing inside the electromagnets 303 can be operated by existing technology and will not be elaborated here. Initially, by controlling the direction of the current flowing inside the electromagnets 303, the electromagnets 303 and the strong magnets 304 generate the same magnetic properties, resulting in a repulsive effect between the two, thereby pushing the strong magnets 304 in a direction away from the electromagnets 303. The electromagnets 303 are pushed to further drive the test material box 302 to extend from the opening on the front of the heating kiln 301 under the precise guidance of the left and right linear guide rails, so as to facilitate the addition of epoxy resin liquid and curing agent into the interior of the test material box 302. When the curing agent is injected into the two syringes 205, the direction of the current in the electromagnets 303 is changed by controlling the current direction of the electromagnets 303 to generate a magnetic property opposite to that of the strong magnets 304, and the strong magnets 304 are attracted in a direction close to the electromagnets 303. Further, the electromagnets 303 bring The test material box 302 is reset to the inside of the heating furnace 301. At the same time, the movement of the test material box 302 to the inside of the heating furnace 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 continued 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 evenly mixed. 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 the two heating kilns 301 to solidify the epoxy resin liquid inside the test material box 302.

[0035] Example 3: Two aluminum alloy sliding doors 401 distributed 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 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. Two electric cylinders 402 distributed 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 brackets. 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 becomes 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. 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 seal the opening on the front of the heating kiln 301 to prevent heat loss.

[0037] Furthermore, two explosion-proof tempered transparent glasses are fixedly embedded in the interior of the aluminum alloy sliding door 401, and a vacuum is set between the two 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] Example 4: A mounting hole 30011 is formed through the top of the heating kiln 301 , and an industrial camera 500 is fixedly mounted on the top of the heating kiln 301 . The industrial camera 500 is located outside the opening of the mounting hole 30011 ;

[0040] Specifically, this embodiment provides a mounting hole 30011 to facilitate the industrial camera 500 to shoot the inside 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 of this solution is in operation, firstly, an appropriate amount of curing agent is filled into the interior of the two injection cylinders 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 to the same height along the inner walls of the left and right path grooves 202, 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 syringes 205 are preheated to keep the 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 direction of the current inside the electromagnet 303 in this device can be controlled by 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 away from the electromagnet 303. The electromagnet 303 is pushed and further drives the test material box 302 to extend from the opening on the front 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, equal amounts of epoxy resin liquid are 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 action of the connection between the long straight spring 209 and the limit plate 208, the two injection rods 207 push the two pistons 206 downward, and the solid inside the two injection barrels 205 is released. The curing agent is injected into the two test material boxes 302 at the bottom. When the two limiting pieces 208 move down and contact the outer walls of the two butterfly bolts 203, the limiting effect of the two butterfly bolts 203 prevents the two limiting pieces 208 from moving downward. This ensures the accuracy of the amount of curing agent injected into the test material box 302. 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 amount of curing agent injected into the syringe 205 by the piston 206 can be adjusted, which makes it convenient to explore 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 direction of the current in the electromagnet 303 is controlled to change, so that the electromagnet 303 generates a magnetic property opposite to that of the strong magnet 304, and the strong magnet 304 is attracted in the direction close to the electromagnet 303. The electromagnet 303 further drives the test material box 302 to reset into the interior of the heating kiln 301. At the same time, the movement of the test material box 302 into the interior 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, 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 providing multiple layers of stirring blades 308 above and below, 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 through the 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 the 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 a certain difference (as shown in the attached figure). Figure 4As shown), after the handle 2011 is pressed downward, the two long straight springs 209 on the left and right drive the two limit plates 208 on the left and right together with the two injection rods 207 to move downward, pushing the two pistons 206 on the left and right downward. When the bottom of one of the limit plates 208 contacts the outer wall of the 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 under the continued downward pressure of the pressure handle 2011, the long straight spring 209 located on its top is compressed until the bottoms of the two limit plates 208 are in contact with the outer walls of the corresponding butterfly bolt 203. In this way, the downward movement distances of the left and right pistons 206 can be inconsistent, and the amount 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 various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A test device for resin curing in prepreg, 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 rack (100), a testing component (300) is provided inside the equipment rack (100), and two horizontally arranged access openings (101) are provided on a side surface of the equipment rack (100) close to the curing agent adding assembly (200); The curing agent adding assembly (200) comprises a U-shaped frame (201) fixedly mounted on the upper side of a side surface of the equipment frame (100), the opposite surfaces of the U-shaped frame (201) are penetrated by path grooves (202), the interiors of the path grooves (202) are movably plugged with butterfly bolts (203), the outer threads of the butterfly bolts (203) are screwed with compression nuts (204), and two horizontally arranged injection cylinders (205) are fixedly mounted inside the U-shaped frame (201). A piston (206) is slidably mounted inside the injection cylinder (205), an injection rod (207) is fixedly mounted on the top of the piston (206), the outer surface of the injection rod (207) is fixedly connected to a limiting plate (208), a long straight spring (209) is fixedly mounted on the middle 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 kilns (301) fixedly installed inside the equipment frame (100), and a test material box (302) is slidably installed inside the two heating kilns (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 each provided with a wave groove (306). Two telescopic holes (3001) are opened on the top of the heating kiln (301) on the left and right sides, 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 prepreg resin curing test device 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 prepreg resin curing test device 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 sides, and the front side of the heating kiln (301) is open.

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: There are a plurality of stirring blades (308) arranged in an upper and lower position, 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 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 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 the top wall of the equipment rack (100) is fixedly installed with two electric cylinders (402) distributed on the left and right, 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 in the interior of 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 provided with a mounting hole (30011) extending therethrough, 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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