A multi-layer integrated forming composite device for fiber prepreg

Abstract

The present invention provides a fiber prepreg multi-layer integrated molding composite device, which relates to the field of prepreg integrated molding. It includes a preheating box body, a hot pressing roller machine is arranged on one side of the preheating box body, a vibration generator is installed on the surface of the preheating box body, an inner prepreg is passed through the inside of the preheating box body and the hot pressing roller machine, and an outer prepreg is arranged on the surface of the inner prepreg. The inside of the preheating box body is symmetrically provided with a first air box, a second air box and a connecting air cylinder arranged between the two. A cam, a sliding sleeve, a sliding block and a first vacuum box are arranged inside the connecting air cylinder. The inside of the preheating box body is symmetrically provided with a perforated adsorption film, and an elastic partition film and an adjusting pipe are arranged inside the perforated adsorption film. By means of local vacuum, the present invention preheats and degasses the prepreg before hot pressing without stopping the feeding of the prepreg, thereby being beneficial to the production efficiency of the multi-layer integrated molding of the fiber prepreg.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated molding of prepreg, and particularly to a multi-layer integrated molding composite device for fiber prepreg. Background Art

[0002] For the multi-layer integrated molding of fiber prepreg, generally, it is first hot-pressed layer by layer and finally formed under high temperature and high pressure, so that each layer of prepreg is independently pressed to ensure that the resin fully infiltrates the fibers, improve the interlayer bonding force, and at the same time facilitate better removal of air bubbles and increase the material density.

[0003] In the existing multi-layer fiber prepreg, a hot press roller is often used to hot-press the prepreg layer by layer during the hot pressing process. During the hot pressing process, when the length of the fiber prepreg is relatively long, it is not easy to use a vacuum device to remove air bubbles from the prepreg. The fiber prepreg needs to complete the vacuum operation in each local area before it can continue to feed, which is not conducive to improving the hot pressing efficiency of the prepreg. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a multi-layer integrated molding composite device for fiber prepreg, which preheats and degasses the prepreg before hot pressing by means of local vacuum without stopping the feeding of the prepreg, thereby facilitating the improvement of the production efficiency of the multi-layer integrated molding of fiber prepreg.

[0005] To solve the above technical problem, the technical solution of the present invention is as follows:

[0006] A multi-layer integrated molding composite device for fiber prepreg, including a preheating box body, a hot press roller machine is arranged on one side of the preheating box body, a vibration generator is installed on the surface of the preheating box body, an inner layer prepreg penetrates through the inside of the preheating box body and the hot press roller machine, and an outer layer prepreg is arranged on the surface of the inner layer prepreg, including:

[0007] First air boxes and second air boxes are symmetrically arranged inside the preheating box body, and the first air boxes and the second air boxes are used for hot air preheating of the inner layer prepreg and the outer layer prepreg laid on its surface;

[0008] A connecting air duct is arranged between the first air box and the second air box, a fan blade is arranged inside the connecting air duct, and the fan blade is used for driving the hot air flow inside the connecting air duct to flow into the inside of the first air box;

[0009] A cam, a sliding sleeve, a sliding block and a first vacuum box are arranged inside the connecting air duct. By the rotation of the cam, the sliding sleeve and the sliding block make reciprocating motions, and through a first one-way valve arranged inside the first vacuum box and a second one-way valve arranged inside the sliding block, the gas inside the first vacuum box is continuously pumped out, so that the inside of the first vacuum box maintains a vacuum;

[0010] Inside the preheating box body, porous adsorption membranes are symmetrically arranged. Inside the porous adsorption membranes, elastic partition membranes and adjusting pipes are arranged. The interior of the porous adsorption membranes is divided into several cavities by the elastic partition membranes and the adjusting pipes, so that negative pressure is generated in the cavities corresponding to the parts where the porous adsorption membranes are attached to the outer layer prepreg, and the porous adsorption membranes rotate following the feeding movement of the outer layer prepreg. Through the cooperation of the fine holes on the surface of the porous adsorption membranes and the vacuum environment inside the first vacuum box, the bubbles in the matrix material of the outer layer prepreg are removed.

[0011] Furthermore, the first air box and the second air box are fixedly connected to the preheating box body through reserved grooves opened on the surface of the preheating box body. The outer layer prepreg passes through rectangular through grooves opened on the surfaces of the first air box and the second air box and is arranged inside the first air box and the second air box. A beam flow box is fixedly connected between the first air box and the second air box. The beam flow box is communicated with the interiors of the first air box and the second air box. The outer layer prepreg passes through the interior of the beam flow box.

[0012] Furthermore, a flow equalizing plate is fixedly connected inside the first air box. The flow equalizing plate is located above the inner layer prepreg. L-shaped flow dividing plates are arranged on both sides of the flow equalizing plate. The L-shaped flow dividing plates are fixedly connected to the first air box.

[0013] Furthermore, two elastic rollers are arranged at positions on the mutually remote surfaces of the first air box and the second air box, above and below the rectangular through groove. The elastic rollers are in contact with the corresponding first air box and second air box respectively. The first air box and the second air box are located between the two groups of elastic rollers. The elastic rollers are rotatably connected to the inner wall of the preheating box body through two sixth bearings.

[0014] Furthermore, the connecting air cylinder is fixedly connected in a reserved circular groove opened on the surfaces of the first air box and the second air box. An installation frame body is fixedly connected inside the connecting air cylinder. A first motor is installed inside the installation frame body. A fan blade is fixedly connected to the end of the output shaft of the first motor. A heater is installed inside the connecting air cylinder.

[0015] Further, the cam is fixedly connected to the surface of the output shaft of the first motor. A second vacuum box is fixedly connected in a first through groove formed on the surface of the connecting air cylinder. The second vacuum box is fixedly connected in a second through groove formed on the surface of the first vacuum box. The first one-way valves are respectively installed in third through grooves formed in an annular array on the surface of the first vacuum box. The sliding sleeves are fixedly connected to the surface of the first vacuum box in an annular array. The first one-way valves are respectively located inside the corresponding sliding sleeves. A sliding block is slidably connected inside the sliding sleeve. Constraint groove blocks are symmetrically fixedly connected to the surface of the cam. Constraint sliding blocks are symmetrically fixedly connected to the surface of the sliding block. The constraint sliding blocks are respectively slidably connected inside the corresponding constraint groove blocks. A partition plate is fixedly connected inside the sliding block. A second one-way valve is installed in a fourth through groove formed on the surface of the partition plate.

[0016] Further, transmission connection blocks are respectively fixedly connected to both ends of the perforated adsorption film. A number of first gears are equidistantly arranged in a first tooth groove formed on the surface of the transmission connection block. The first gears are meshed with the transmission connection block. The first gears are rotatably connected to the inner wall of the preheating box body through first bearings. One of the preheating box bodies is provided with two second motors. Output shafts of the two second motors extend into the preheating box body through a fifth through groove formed on the surface of the preheating box body. Output shafts of the two second motors are respectively fixedly connected to one of the first gears inside the corresponding perforated adsorption film. A second gear is arranged between two adjacent first gears. The second gear is rotatably connected to the inner wall of the preheating box body through a second bearing. The second gear is meshed with both of the first gears.

[0017] Further, the adjusting pipe is rotatably connected to a first circular groove formed on the surface of the corresponding two transmission connection blocks through two third bearings and two first dynamic seals. The adjusting pipe is fixedly connected to the surface of two of the first gears whose central axes do not coincide with the second motor. A negative pressure pipe is rotatably connected inside the adjusting pipe. The negative pressure pipe is fixedly connected to a second circular groove formed on the surface of the preheating box body. The negative pressure pipe is rotatably connected to the corresponding first gear through a fourth bearing and a second dynamic seal.

[0018] Further, a second strip-shaped groove is formed on the surface of the negative pressure pipe. The opening of the second strip-shaped groove faces downward. Elastic partition membranes are arranged on the surface of the adjusting pipe in an annular array. The elastic partition membranes are fixedly connected to the perforated adsorption film, the transmission connection block and the adjusting pipe. First strip-shaped grooves are formed on the surface of the adjusting pipe in an annular array. One first strip-shaped groove is arranged between any two adjacent elastic partition membranes.

[0019] Further, a vacuum regulating valve is installed in a third circular groove formed on the surface of the second vacuum box, a first connecting pipe is fixedly connected in a fourth circular groove formed on the surface of the second vacuum box, a second connecting pipe is flange-connected to one end of the first connecting pipe away from the vacuum regulating valve, and the ends of the negative pressure pipes are fixedly connected in a sixth through groove formed on the surface of the second connecting pipe.

[0020] The above solution of the present invention has at least the following beneficial effects:

[0021] In the above solution of the present invention, the preliminary melting of the prepreg matrix material is achieved through the use of components such as the first air box, the second air box, the connecting air cylinder, and the fan blades. Through the coordinated use of the vibration generator and the elastic roller, the hot air flow in the first air box and the second air box is reduced from overflowing, thereby saving energy consumption. At the same time, through vibration, the uniform distribution of the matrix material on the surface of the prepreg is promoted. Through the use of components such as the transmission connection block, the perforated adsorption film, the elastic separation film, the regulating pipe, and the negative pressure pipe, while the prepreg can be continuously fed, a part of the surface of the perforated adsorption film remains stationary with the outer prepreg for a certain period of time, facilitating the removal of air bubbles in the matrix material of the outer prepreg through negative pressure in a part of the cavity inside the perforated adsorption film. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram provided by the present invention.

[0023] Figure 2 is the schematic diagram of the first air box in the present invention.

[0024] Figure 3 is the schematic diagram of the first motor in the present invention.

[0025] Figure 4 is the schematic diagram of the flow equalizing plate in the present invention.

[0026] Figure 5 is the schematic diagram of the sliding sleeve in the present invention.

[0027] Figure 6 is the schematic diagram of the constraint groove block in the present invention.

[0028] Figure 7 is the schematic diagram of the first gear in the present invention.

[0029] Figure 8 is the schematic diagram of the elastic separation film in the present invention.

[0030] In the figure: 101, preheating box body; 102, hot pressing roller machine; 103, inner prepreg; 104, outer prepreg; 105, vibration generator;

[0031] 201. First bellows; 202. Second bellows; 203. Connecting air duct; 204. Mounting frame; 205. First motor; 206. Cam; 207. Constraint groove block; 208. First vacuum box; 209. Sliding sleeve; 210. Sliding block; 211. First one-way valve; 212. Constraint slider; 213. Partition board; 214. Second one-way valve; 215. Second vacuum box; 216. Vacuum regulating valve; 217. First connecting pipe; 218. Second connecting pipe; 219. Beam current box; 220. Flow equalizing plate; 221. L-shaped flow dividing plate; 222. Fan blade; 223. Elastic roller; 224. Heater; 225. Second motor

[0032] 301. First gear; 302. Second gear; 303. Transmission connecting block; 304. Perforated adsorption film; 305. Elastic partition film; 306. Adjusting pipe; 307. Negative pressure pipe; 308. First strip-shaped groove; 309. Second strip-shaped groove Detailed implementation manners

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0034] As Figures 1 to 8 shown, an embodiment of the present invention provides a fiber prepreg multi-layer integrated molding composite device, including a preheating box body 101. A hot pressing roller machine 102 is arranged on one side of the preheating box body 101. A vibration generator 105 is installed on the surface of the preheating box body 101. An inner prepreg 103 passes through the interiors of the preheating box body 101 and the hot pressing roller machine 102. An outer prepreg 104 is arranged on the surface of the inner prepreg 103, including:

[0035] First bellows 201 and second bellows 202 are symmetrically arranged inside the preheating box body 101. The first bellows 201 and the second bellows 202 are used for hot air preheating of the inner prepreg 103 and the outer prepreg 104 laid on its surface;

[0036] A connecting air duct 203 is arranged between the first bellows 201 and the second bellows 202. A fan blade 222 is arranged inside the connecting air duct 203. The fan blade 222 is used for driving the hot air flow inside the connecting air duct 203 to flow into the interior of the first bellows 201;

[0037] Inside the connecting air duct 203, there are a cam 206, a sliding sleeve 209, a sliding block 210 and a first vacuum box 208. By the rotation of the cam 206, the sliding sleeve 209 and the sliding block 210 make reciprocating motions, and through a first one-way valve 211 arranged inside the first vacuum box 208 and a second one-way valve 214 arranged inside the sliding block 210, the gas inside the first vacuum box 208 is continuously pumped out, so as to maintain a vacuum inside the first vacuum box 208;

[0038] Inside the preheating box body 101, porous adsorption membranes 304 are symmetrically arranged. Inside the porous adsorption membranes 304, there are elastic partition membranes 305 and adjusting pipes 306. Through the elastic partition membranes 305 and the adjusting pipes 306, the inside of the porous adsorption membranes 304 is divided into several cavities, so that a negative pressure is generated in the cavities corresponding to the part where the porous adsorption membranes 304 are in contact with the outer pre-impregnated material 104, and the porous adsorption membranes 304 rotate following the feeding movement of the outer pre-impregnated material 104. Through the cooperation of the fine holes on the surface of the porous adsorption membranes 304 and the vacuum environment inside the first vacuum box 208, the bubbles in the matrix material of the outer pre-impregnated material 104 are removed.

[0039] In the embodiment of the present invention, during the work of multi-layer integral forming of fiber pre-impregnated cloth, the fiber pre-impregnated cloth is hot-pressed layer by layer. Initially, two or three layers of fiber pre-impregnated cloth are laid and passed through the inside of the first air box 201 and the second air box 202. Among the multi-layer pre-impregnated cloths, the inner layer is the inner pre-impregnated material 103 and the outer layer is the outer pre-impregnated material 104. After being preheated by the hot air of the first air box 201 and the second air box 202, the matrix material on the surface of the outer pre-impregnated cloth is preliminarily melted, and the vibration generator 105 is started, so that the vibration generator 105 drives the inner pre-impregnated material 103 and the outer pre-impregnated material 104 to vibrate through the preheating box body 101, thereby promoting the discharge of bubbles in the matrix material of the fiber pre-impregnated cloth and making the distribution of the matrix material on the surface of the fiber pre-impregnated cloth more uniform. During the feeding process of the inner pre-impregnated material 103 and the outer pre-impregnated material 104, the porous adsorption membranes 304 are attached to the surface of the outer pre-impregnated material 104. Through the negative pressure of the first vacuum box 208, a low-pressure vacuum environment is generated in some cavities separated by the elastic partition membranes 305 in the porous adsorption membranes 304, and the action of removing bubbles is carried out on the matrix material in the flowing state on the surface of the outer pre-impregnated material 104 through the fine holes on the surface of the porous adsorption membranes 304;

[0040] In order to reduce the influence of the vacuum environment on the matrix material, a high-temperature resistant porous film can be laid on the surface of the outer prepreg 104 away from the inner prepreg 103. When the outer prepreg 104 moves from the side of the preheating box 101 close to the first wind box 201 to the hot pressing roller 102, the high-temperature resistant porous film is peeled off, so that the hot pressing roller 102 performs hot pressing on the outer prepreg 104 and the inner prepreg 103. This process reduces the overall heating time of the outer prepreg 104 and the inner prepreg 103 by the hot pressing roller 102, and makes the bubbles inside the inner prepreg 103 and the outer prepreg 104 more fully discharged, so that the matrix material inside the inner prepreg 103 and the outer prepreg 104 is more evenly distributed, which is conducive to keeping the texture of the fiber prepreg cloth straight after multi-layer hot pressing;

[0041] After the fiber prepreg cloth is heat-pressed by the hot pressing roller machine 102, it is cooled and then the outer prepreg 104 is laid again. The laid outer prepreg 104 enters the next preheating box 101 and repeats the above operation. The hot air preheating can heat the matrix material in the outer prepreg 104 to a fluid state by regulating the temperature, while the fluidity of the matrix material in the inner prepreg 103 located inside is relatively low, which is conducive to maintaining the uniformity of the matrix material inside the multi-layer fiber prepreg cloth.

[0042] The first wind box 201 and the second wind box 202 are fixedly connected to the preheating box 101 through the reserved grooves opened on the surface of the preheating box 101, and the outer layer prepreg 104 is penetrated into the first wind box 201 and the second wind box 202 through the rectangular through grooves opened on the surfaces of the first wind box 201 and the second wind box 202. A beam box 219 is fixedly connected between the first wind box 201 and the second wind box 202, and the beam box 219 is communicated with the interior of the first wind box 201 and the second wind box 202, and the outer layer prepreg 104 is penetrated into the beam box 219.

[0043] In an embodiment of the present invention, hot air is blown from the inside of the connecting wind tube 203 into the inside of the first wind box 201, and under the constraint of the beam box 219, it is blown along the surface of the outer layer prepreg 104 to the inside of the second wind box 202, and returns from the inside of the second wind box 202 to the inside of the connecting wind tube 203. In this process, the beam box 219 allows the hot air to blow the surface of the outer layer prepreg 104 more evenly, and the hot air flow circulates between the first wind box 201 and the connecting wind tube 203, which helps to reduce the heat loss of the hot air flow.

[0044] A flow balancing plate 220 is fixedly connected to the interior of the first wind box 201 . The flow balancing plate 220 is located above the inner layer prepreg 103 . L-shaped flow splitters 221 are provided on both sides of the flow balancing plate 220 . The L-shaped flow splitters 221 are fixedly connected to the first wind box 201 .

[0045] In an embodiment of the present invention, the function of the flow equalizing plate 220 is to evenly distribute the hot air flow blown into the interior of the first air box 201 from the connecting air duct 203 to positions near both ends of the flow equalizing plate 220. After being further distributed by the L-shaped flow dividing plate 221, the hot air flow evenly blows on the surface of the outer prepreg 104, which is beneficial to the uniform heating of the surface of the outer prepreg 104, the uniform flow of the matrix material on the surface of the outer prepreg 104, and the improvement of the discharge efficiency of the bubbles inside the matrix material.

[0046] On the mutually remote surfaces of the first air box 201 and the second air box 202, two elastic rollers 223 are arranged at positions on the upper and lower sides of the rectangular through groove. The elastic rollers 223 are in contact with the corresponding first air box 201 and second air box 202 respectively. The first air box 201 and the second air box 202 are located between the two groups of elastic rollers 223. The elastic rollers 223 are rotationally connected to the inner wall of the preheating box body 101 through two sixth bearings.

[0047] In an embodiment of the present invention, the elastic roller 223 has elasticity. When the overall composed of the inner prepreg 103 and the outer prepreg 104 with different thicknesses of the outer prepreg 104 comes into contact with the elastic roller 223, the elastic roller 223 will undergo elastic deformation. The elastic roller 223 has little influence on the feeding of the outer prepreg 104 and the matrix material in a flowing state on its surface, so that the hot air flow blown out from the inside of the connecting air duct 203 is not easily leaked into the interior of the preheating box body 101 through the rectangular pipe through grooves opened on the surfaces of the first air box 201 and the second air box 202. The vibration generator 105 drives the elastic roller 223 to vibrate through the preheating box body 101, so as to make the matrix material in a flowing state on the surface of the outer prepreg 104 evenly distributed and beneficial to the discharge of bubbles.

[0048] The connecting air duct 203 is fixedly connected in the reserved circular groove opened on the surfaces of the first air box 201 and the second air box 202. An installation frame body 204 is fixedly connected inside the connecting air duct 203. A first motor 205 is installed inside the installation frame body 204. The end of the output shaft of the first motor 205 is fixedly connected with a fan blade 222. A heater 224 is installed inside the connecting air duct 203.

[0049] In an embodiment of the present invention, by operating the first motor 205 inside the installation frame body 204, the fan blade 222 rotates. The rotation of the fan blade 222 causes the air flow to be blown into the interior of the first air box 201 after being heated by the heater 224. Most of the hot air flow returns to the inside of the connecting air duct 203 through the beam flow box 219 and the second air box 202, so as to reduce the loss of the heat of the air flow, which is beneficial to reducing the heating energy consumption of the heater 224.

[0050] The cam 206 is fixedly connected to the surface of the output shaft of the first motor 205. A second vacuum box 215 is fixedly connected inside a first through groove formed on the surface of the air duct 203. The second vacuum box 215 is fixedly connected inside a second through groove formed on the surface of the first vacuum box 208. The first one-way valves 211 are respectively installed inside third through grooves formed in an annular array on the surface of the first vacuum box 208. The sliding sleeves 209 are fixedly connected to the surface of the first vacuum box 208 in an annular array. The first one-way valves 211 are respectively located inside the corresponding sliding sleeves 209. A sliding block 210 is slidably connected inside the sliding sleeve 209. Constraint groove blocks 207 are symmetrically fixedly connected to the surface of the cam 206. Constraint sliding blocks 212 are symmetrically fixedly connected to the surface of the sliding block 210. The constraint sliding blocks 212 are respectively slidably connected inside the corresponding constraint groove blocks 207. A partition plate 213 is fixedly connected inside the sliding block 210. A second one-way valve 214 is installed inside a fourth through groove formed on the surface of the partition plate 213.

[0051] In the embodiment of the present invention, when the first motor 205 operates to drive the fan blade 222 to rotate, the rotation of the output shaft of the first motor 205 drives the cam 206 to rotate. The rotation of the cam 206 causes the constraint sliding blocks 212 on the surface of the sliding block 210 to continuously slide inside the groove on the surface of the constraint groove block 207, thereby driving the sliding block 210 to continuously perform reciprocating motion inside the corresponding sliding sleeve 209. During this process, when the sliding block 210 moves away from the inside of the sliding sleeve 209 inside the sliding sleeve 209, the gas inside the first vacuum box 208 enters the inside of the sliding sleeve 209 through the first one-way valve 211, and the gas outside the sliding sleeve 209 cannot enter the inside of the sliding sleeve 209 through the second one-way valve 214. When the sliding block 210 moves closer to the sliding sleeve 209 inside the sliding sleeve 209, the gas inside the sliding sleeve 209 cannot enter the inside of the first vacuum box 208 through the first one-way valve 211, and the gas inside the sliding sleeve 209 is discharged from the inside of the sliding sleeve 209 through the second one-way valve 214 on the surface of the partition plate 213. This process makes the inside of the first vacuum box 208 in a low-pressure vacuum state.

[0052] At both ends of the perforated adsorption film 304, there are respectively fixedly connected with transmission connection blocks 303. In the first tooth grooves formed on the surfaces of the transmission connection blocks 303, a number of first gears 301 are equidistantly arranged. The first gears 301 are meshed and connected with the transmission connection blocks 303. The first gears 301 are rotationally connected to the inner wall of the preheating box body 101 through first bearings. One of the preheating box bodies 101 is equipped with two second motors 225. The output shafts of the two second motors 225 extend into the interior of the preheating box body 101 through the fifth through grooves formed on the surface of the preheating box body 101. The output shafts of the two second motors 225 are respectively fixedly connected with one of the first gears 301 inside the corresponding perforated adsorption film 304. Between two adjacent first gears 301, there is a second gear 302. The second gear 302 is rotationally connected to the inner wall of the preheating box body 101 through a second bearing. The second gear 302 is meshed and connected with both first gears 301.

[0053] The adjusting pipe 306 is rotationally connected in the first circular grooves formed on the surfaces of the corresponding two transmission connection blocks 303 through two third bearings and two first dynamic seals. The adjusting pipe 306 is fixedly connected to the surfaces of two first gears 301 whose central axes coincide and are not in contact with the second motor 225. Inside the adjusting pipe 306, there is a rotationally connected negative pressure pipe 307. The negative pressure pipe 307 is fixedly connected to the second circular groove formed on the surface of the preheating box body 101. The negative pressure pipe 307 is rotationally connected to the corresponding first gear 301 through a fourth bearing and a second dynamic seal.

[0054] On the surface of the negative pressure pipe 307, there is a second strip-shaped groove 309. The opening of the second strip-shaped groove 309 faces downward. The elastic partition membranes 305 are arranged in an annular array on the surface of the adjusting pipe 306. The elastic partition membranes 305 are fixedly connected to the perforated adsorption film 304, the transmission connection blocks 303, and the adjusting pipe 306. On the surface of the adjusting pipe 306, there are first strip-shaped grooves 308 arranged in an annular array. One first strip-shaped groove 308 is arranged between any two adjacent elastic partition membranes 305.

[0055] In the embodiment of the present invention, the perforated adsorption film 304 is made of a high-temperature resistant material and has a certain elasticity, such as a high-temperature resistant silicone material, so as to facilitate maintaining good sealing performance after being attached to the surface of the outer prepreg 104. The perforated adsorption film 304 generates a binding force in the axial direction of the first gear 301 through the engagement of the transmission connection blocks 303 on both sides with the first tooth groove of the first gear 301, so that the perforated adsorption film 304 remains stable in shape when a low-pressure vacuum area is formed inside, facilitating its stable attachment to the outer prepreg 104. Driven by the second motor 225, the first gear 301 drives the perforated adsorption film 304 to rotate synchronously under the transmission of the second gear 302, so that the perforated adsorption film 304 always maintains relative static with the outer prepreg 104 for a certain period of time in cooperation with the feeding of the outer prepreg 104, thereby facilitating the vacuum degassing operation of the perforated adsorption film 304 on the surface of the outer prepreg 104;

[0056] The transmission connection block 303 is composed of an annular frame and an elastic sealing film fixedly connected to one side of the annular frame. The annular frame can specifically be a synchronous belt. The first tooth groove of the synchronous belt completely wraps the teeth of the first gear 301, so that when the first gear 301 rotates to drive the transmission connection block 303 to rotate, it also generates a binding force along the axial direction of the first gear 301 on the perforated adsorption film 304 through the wrapping of the first tooth groove on the teeth of the first gear 301. The transmission connection block 303 is fixedly connected to the perforated adsorption film 304 through the elastic sealing film. The elastic partition film 305 is fixedly connected to the flexible sealing film on the surface of the transmission connection block 303. The first circular groove is opened on the surface of the flexible sealing film to facilitate the connection between the adjusting pipe 306 and the transmission connection block 303. At the same time, the elastic sealing film makes the connection between the transmission connection block 303 and the perforated adsorption film 304 airtight;

[0057] The part of the surface of the negative pressure pipe 307 that fits with the inner wall of the adjusting pipe 306 blocks the first strip-shaped groove 308 on the surface of the adjusting pipe 306. When the negative pressure is generated inside the negative pressure pipe 307, the part of the second strip-shaped groove 309 on the surface of the negative pressure pipe 307 that is connected to the inside of the first strip-shaped groove 308 causes bubbles inside the matrix material on the surface of the outer prepreg 104 to be removed when the surface of the perforated adsorption film 304 corresponding to the cavity connected to the inside of the second strip-shaped groove 309 fits with the outer prepreg 104.

[0058] A vacuum regulating valve 216 is installed in a third circular groove formed on the surface of the second vacuum box 215, and a first connecting pipe 217 is fixedly connected in a fourth circular groove formed on the surface of the second vacuum box 215. One end of the first connecting pipe 217 away from the vacuum regulating valve 216 is flange-connected to a second connecting pipe 218, and the ends of the negative pressure pipes 307 are fixedly connected in a sixth through groove formed on the surface of the second connecting pipe 218.

[0059] In the embodiment of the present invention, the vacuum regulating valve 216 is used to balance the stability of the negative pressure inside the second vacuum box 215. The first connecting pipe 217 and the second connecting pipe 218 connect the inside of the second vacuum box 215 with the inside of the negative pressure pipe 307, so as to facilitate the removal of bubbles inside the matrix material of the outer prepreg 104 by the negative pressure action of the perforated adsorption film 304.

[0060] It should be noted that: this device needs to be used in cooperation with cooling equipment (not shown in the figure), prepreg tensioning equipment (not shown in the figure), laying equipment (not shown in the figure), winding and unwinding equipment (not shown in the figure). The working principles, installation methods and usage methods of the hot pressing roller machine 102, vibration generator 105, cooling equipment, tensioning equipment, winding and unwinding equipment are well known in the prior art and will not be described in detail here;

[0061] The use of the high-temperature resistant porous film is well known in the prior art and will not be described in detail here.

[0062] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fiber prepreg multilayer integrated molding composite device, comprising a preheating box (101), a hot pressing roller (102) is arranged on one side of the preheating box (101), a vibration generator (105) is installed on the surface of the preheating box (101), an inner layer prepreg (103) is inserted into the interior of the preheating box (101) and the hot pressing roller (102), and an outer layer prepreg (104) is arranged on the surface of the inner layer prepreg (103), characterized in that: include: A first wind box (201) and a second wind box (202) are symmetrically arranged inside the preheating box (101). A connecting air cylinder (203) is provided between the first air box (201) and the second air box (202). A cam (206), a sliding sleeve (209), a sliding block (210) and a first vacuum box (208) are arranged inside the connecting air cylinder (203); the sliding sleeve (209) and the sliding block (210) are caused to reciprocate by the rotation of the cam (206); and the internal gas of the first vacuum box (208) is continuously extracted through a first one-way valve (211) arranged inside the first vacuum box (208) and a second one-way valve (214) arranged inside the sliding block (210), thereby maintaining a vacuum inside the first vacuum box (208); A perforated adsorption film (304) is symmetrically arranged inside the preheating box (101), and an elastic partition film (305) and an adjustment tube (306) are arranged inside the perforated adsorption film (304). The elastic partition film (305) and the adjustment tube (306) divide the interior of the perforated adsorption film (304) into a plurality of cavities, so that negative pressure is generated in the cavities corresponding to the portions where the perforated adsorption film (304) and the outer layer prepreg (104) are bonded, and the perforated adsorption film (304) rotates following the feeding movement of the outer layer prepreg (104), and bubbles in the matrix material of the outer layer prepreg (104) are removed through the cooperation of the fine pores on the surface of the perforated adsorption film (304) and the vacuum environment inside the first vacuum box (208).

2. The fiber prepreg multi-layer integrated molding composite equipment according to claim 1, characterized in that: The first wind box (201) and the second wind box (202) are fixedly connected to the preheating box (101) via a reserved groove provided on the surface of the preheating box (101); the outer layer prepreg (104) is passed through the inside of the first wind box (201) and the second wind box (202) via a rectangular through groove provided on the surface of the first wind box (201) and the second wind box (202); a beam box (219) is fixedly connected between the first wind box (201) and the second wind box (202); the beam box (219) is in communication with the inside of the first wind box (201) and the second wind box (202); and the outer layer prepreg (104) is passed through the inside of the beam box (219).

3. The fiber prepreg multi-layer integrated molding composite equipment according to claim 2, characterized in that: A flow balancing plate (220) is fixedly connected to the interior of the first wind box (201), the flow balancing plate (220) is located above the inner layer prepreg (103), and L-shaped flow splitters (221) are provided on both sides of the flow balancing plate (220), and the L-shaped flow splitters (221) are fixedly connected to the first wind box (201).

4. The fiber prepreg multi-layer integrated molding composite equipment according to claim 3, characterized in that: Two elastic rollers (223) are arranged at the upper and lower sides of the rectangular through-groove on the mutually distant surfaces of the first bellows (201) and the second bellows (202); the elastic rollers (223) are in contact with the corresponding first bellows (201) and second bellows (202); the first bellows (201) and the second bellows (202) are located between the two groups of elastic rollers (223); and the elastic rollers (223) are rotatably connected to the inner wall of the preheating box body (101) via two sixth bearings.

5. The fiber prepreg multi-layer integrated molding composite equipment according to claim 4, characterized in that: The connecting air duct (203) is fixedly connected to a reserved circular groove provided on the surface of the first air box (201) and the second air box (202); a mounting frame (204) is fixedly connected to the interior of the connecting air duct (203); a first motor (205) is installed inside the mounting frame (204); a fan blade (222) is fixedly connected to the end of the output shaft of the first motor (205); and a heater (224) is installed inside the connecting air duct (203).

6. The fiber prepreg multi-layer integrated molding composite equipment according to claim 5, characterized in that: The cam (206) is fixedly connected to the surface of the output shaft of the first motor (205); a second vacuum box (215) is fixedly connected to a first through groove opened on the surface of the connecting air cylinder (203); the second vacuum box (215) is fixedly connected to a second through groove opened on the surface of the first vacuum box (208); the first one-way valves (211) are respectively installed in third through grooves opened in an annular array on the surface of the first vacuum box (208); the sliding sleeves (209) are fixedly connected to the surface of the first vacuum box (208) in an annular array; the first one-way valves (211) They are respectively located inside the corresponding sliding sleeves (209), the sliding sleeves (209) are slidably connected to the inside of the sliding sleeves (209), the surface of the cam (206) is symmetrically fixedly connected to the constraint groove block (207), the surface of the sliding block (210) is symmetrically fixedly connected to the constraint slider (212), the constraint slider (212) is slidably connected inside the corresponding constraint groove block (207), the inside of the sliding block (210) is fixedly connected to the isolation plate (213), and the second one-way valve (214) is installed in the fourth through groove opened on the surface of the isolation plate (213).

7. The fiber prepreg multi-layer integrated molding composite equipment according to claim 6, characterized in that: Both ends of the porous adsorption membrane (304) are respectively fixedly connected with a transmission connection block (303); a plurality of first gears (301) are equidistantly arranged in a first tooth groove provided on the surface of the transmission connection block (303); the first gears (301) are meshedly connected with the transmission connection block (303); the first gears (301) are rotatably connected to the inner wall of the preheating box (101) via a first bearing; one of the preheating boxes (101) is equipped with two second motors (225); the output shafts of the two second motors (225) are connected to the preheating box (101) via a first bearing; A fifth through groove formed on the surface of the heat box (101) extends into the interior of the preheating box (101); the output shafts of the two second motors (225) are respectively fixedly connected to one of the first gears (301) inside the corresponding porous adsorption membrane (304); a second gear (302) is provided between two adjacent first gears (301); the second gear (302) is rotatably connected to the inner wall of the preheating box (101) via a second bearing; the second gear (302) is meshingly connected to the two first gears (301).

8. The fiber prepreg multi-layer integrated molding composite equipment according to claim 7, characterized in that: The regulating tube (306) is rotatably connected to the first circular grooves opened on the surfaces of the corresponding two transmission connection blocks (303) via two third bearings and two first dynamic seals; the regulating tube (306) is fixedly connected to the surface of the first gear (301) whose two central axes coincide with each other and which is not in contact with the second motor (225); a negative pressure tube (307) is rotatably connected inside the regulating tube (306); the negative pressure tube (307) is fixedly connected to the second circular groove opened on the surface of the preheating box (101); and the negative pressure tube (307) is rotatably connected to the corresponding first gear (301) via a fourth bearing and a second dynamic seal.

9. The fiber prepreg multi-layer integrated molding composite equipment according to claim 8, characterized in that: The surface of the negative pressure tube (307) is provided with a second strip groove (309), the opening of the second strip groove (309) faces downwards, the elastic separation membrane (305) is arranged in a ring array on the surface of the regulating tube (306), the elastic separation membrane (305) is fixedly connected to the perforated adsorption membrane (304), the transmission connection block (303) and the regulating tube (306), the surface of the regulating tube (306) is provided with a first strip groove (308) in a ring array, and one first strip groove (308) is arranged between any two adjacent elastic separation membranes (305).

10. The fiber prepreg multi-layer integrated molding composite equipment according to claim 9, characterized in that: A vacuum regulating valve (216) is installed in a third circular groove opened on the surface of the second vacuum box (215); a first connecting pipe (217) is fixedly connected in a fourth circular groove opened on the surface of the second vacuum box (215); an end of the first connecting pipe (217) away from the vacuum regulating valve (216) is flange-connected to a second connecting pipe (218); and ends of the negative pressure pipe (307) are fixedly connected in a sixth through groove opened on the surface of the second connecting pipe (218).

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