Multi-layer integrated forming compound equipment for fiber prepreg cloth

Abstract

The invention provides a fiber prepreg multi-layer integral forming composite device, and relates to the field of prepreg integral forming, the fiber prepreg multi-layer integral forming composite device comprises a preheating box body, one side of the preheating box body is provided with a hot pressing roller machine, the surface of the preheating box body is provided with a vibration generator, and an inner layer prepreg is arranged in the preheating box body and the hot pressing roller machine in a penetrating manner; an outer-layer prepreg is arranged on the surface of the inner-layer prepreg, a first air bellow, a second air bellow and a connecting air cylinder are symmetrically arranged in a preheating box body, the connecting air cylinder is arranged between the first air bellow and the second air bellow, a cam, a sliding sleeve, a sliding block and a first vacuum box are arranged in the connecting air cylinder, and adsorption films with holes are symmetrically arranged in the preheating box body. According to the device, preheating and degassing work before hot pressing is conducted on prepreg in a local vacuum mode under the condition that prepreg feeding is not stopped, and therefore the production efficiency of fiber prepreg multi-layer integrated forming is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of prepreg integrated molding, and in particular to a fiber prepreg multilayer integrated molding composite device. Background Art

[0002] The fiber prepreg is formed in multiple layers, usually by hot pressing layer by layer and finally by high temperature and high pressure, so that each layer of prepreg is independently pressed to ensure that the resin fully impregnates the fiber, improves the interlayer bonding strength, and also facilitates better removal of bubbles and increases material density; In the hot pressing process of existing multi-layer fiber prepregs, hot pressing rollers are often used to hot press the prepregs layer by layer. During the hot pressing process, when the fiber prepregs are long, it is not easy to use vacuum equipment to remove bubbles from the prepregs. The fiber prepregs need to complete the vacuum operation in each local area before continuing to feed, which is not conducive to improving the hot pressing efficiency of the prepregs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a composite equipment for multi-layer integrated molding of fiber prepreg cloth, which preheats and degasses the prepreg before hot pressing by means of local vacuum without stopping the feeding of the prepreg cloth, thereby facilitating improving the production efficiency of the multi-layer integrated molding of fiber prepreg cloth.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows: A fiber prepreg multilayer integrated molding composite device, comprising a preheating box, a hot pressing roller machine is arranged on one side of the preheating box, a vibration generator is installed on the surface of the preheating box, an inner layer prepreg is penetrated inside the preheating box and the hot pressing roller machine, and an outer layer prepreg is arranged on the surface of the inner layer prepreg, comprising: The preheating box is symmetrically provided with a first wind box and a second wind box, and the first wind box and the second wind box are used to preheat the inner layer prepreg and the outer layer prepreg laid on the surface thereof with hot air; A connecting wind tube is provided between the first wind box and the second wind box, and a fan blade is provided inside the connecting wind tube, and the fan blade is used to drive the hot air inside the connecting wind tube to flow to the inside of the first wind box; The connecting air cylinder is provided with a cam, a sliding sleeve, a sliding block and a first vacuum box. The sliding sleeve and the sliding block are reciprocated by the rotation of the cam, and the internal gas of the first vacuum box is continuously extracted through a first one-way valve provided inside the first vacuum box and a second one-way valve provided inside the sliding block, so that the interior of the first vacuum box is maintained in vacuum; The interior of the preheating box is symmetrically provided with a perforated adsorption film, and the interior of the perforated adsorption film is provided with an elastic separation film and an adjustment tube, and the interior of the perforated adsorption film is divided into a plurality of cavities by the elastic separation film and the adjustment tube, so that negative pressure is generated in the cavities corresponding to the bonding parts of the perforated adsorption film and the outer prepreg, and the perforated adsorption film is rotated following the feeding movement of the outer prepreg, and the bubbles in the outer prepreg matrix material are removed by the cooperation of the fine pores on the surface of the perforated adsorption film and the vacuum environment inside the first vacuum box.

[0005] Furthermore, the first wind box and the second wind 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 is passed through the interior of the first wind box and the second wind box through rectangular through grooves opened on the surfaces of the first wind box and the second wind box, a beam box is fixedly connected between the first wind box and the second wind box, the beam box is communicated with the interior of the first wind box and the second wind box, and the outer layer prepreg is passed through the interior of the beam box.

[0006] Furthermore, a flow equalizing plate is fixedly connected to the interior of the first wind box, and the flow equalizing plate is located above the inner layer prepreg. L-shaped diverter plates are arranged on both sides of the flow equalizing plate, and the L-shaped diverter plates are fixedly connected to the first wind box.

[0007] Furthermore, two elastic rollers are provided at the mutually distant surfaces of the first bellows and the second bellows located at the upper and lower sides of the rectangular through groove, and the elastic rollers are in conflict with the corresponding first bellows and the second bellows. The first bellows and the second bellows are located between the two groups of the elastic rollers, and the elastic rollers are rotatably connected to the inner wall of the preheating box body through two sixth bearings.

[0008] Furthermore, the connecting air duct is fixedly connected in a reserved circular groove opened on the surfaces of the first air box and the second air box, the interior of the connecting air duct is fixedly connected to a mounting frame, the interior of the mounting frame is installed with a first motor, the end of the output shaft of the first motor is fixedly connected with a fan blade, and the interior of the connecting air duct is installed with a heater.

[0009] Furthermore, the cam is fixedly connected to the surface of the first motor output shaft, a second vacuum box is fixedly connected to the first through groove opened on the surface of the connecting wind tube, the second vacuum box is fixedly connected to the second through groove opened on the surface of the first vacuum box, the first one-way valves are respectively installed in third through grooves opened in a ring array on the surface of the first vacuum box, the sliding sleeve is fixedly connected to the surface of the first vacuum box in a ring array, the first one-way valves are respectively located inside the corresponding sliding sleeves, the sliding sleeves are slidably connected inside the sliding sleeves, the surface of the cam is symmetrically fixedly connected with constraint groove blocks, the surface of the sliding block is symmetrically fixedly connected with constraint sliders, the constraint sliders are respectively slidably connected inside the corresponding constraint groove blocks, the sliding block is fixedly connected with an isolation plate, and the second one-way valve is installed in the fourth through groove opened on the surface of the isolation plate.

[0010] Furthermore, both ends of the perforated adsorption membrane are respectively fixedly connected with a transmission connection block, and a plurality of first gears are equidistantly arranged in a first tooth groove opened on the surface of the transmission connection block, the first gear is meshed with the transmission connection block, and the first gear is rotatably connected to the inner wall of the preheating box through a first bearing, one of the preheating boxes is equipped with two second motors, and the output shafts of the two second motors extend to the interior of the preheating box through a fifth through groove opened on the surface of the preheating box, and the output shafts of the two second motors are respectively fixedly connected to one of the first gears corresponding to the inside of the perforated adsorption membrane, and a second gear is arranged between two adjacent first gears, and the second gear is rotatably connected to the inner wall of the preheating box through a second bearing, and the second gear is meshed with both of the two first gears.

[0011] Furthermore, the regulating tube is rotatably connected in the first circular grooves opened on the surfaces of the corresponding two transmission connection blocks through two third bearings and two first dynamic seals, the regulating tube is fixedly connected to the surface of the first gear whose two central axes coincide with each other and which is not in contact with the second motor, and a negative pressure tube is rotatably connected inside the regulating tube, the negative pressure tube is fixedly connected in the second circular groove opened on the surface of the preheating box body, and the negative pressure tube is rotatably connected to the corresponding first gear through a fourth bearing and a second dynamic seal.

[0012] Furthermore, a second strip groove is provided on the surface of the negative pressure tube, the opening of the second strip groove faces downward, the elastic separation membrane is arranged in a ring array on the surface of the regulating tube, the elastic separation membranes are fixedly connected to the perforated adsorption membrane, the transmission connecting block and the regulating tube, and a first strip groove is provided on the surface of the regulating tube in a ring array, and one first strip groove is arranged between any two adjacent elastic separation membranes.

[0013] Furthermore, a vacuum regulating valve is installed in the third circular groove opened on the surface of the second vacuum box, a first connecting pipe is fixedly connected to the fourth circular groove opened on the surface of the second vacuum box, the end of the first connecting pipe away from the vacuum regulating valve is flange-connected to the second connecting pipe, and the ends of the negative pressure pipe are fixedly connected to the sixth through groove opened on the surface of the second connecting pipe.

[0014] The above solution of the present invention includes at least the following beneficial effects: The above scheme of the present invention uses the first bellows, the second bellows, the connecting wind tube and the fan blades to initially melt the prepreg base material. The coordinated use of the vibration generator and the elastic roller reduces the overflow of the hot air flow in the first bellows and the second bellows, thereby saving energy consumption. At the same time, the vibration promotes the uniform distribution of the base material on the surface of the prepreg. By using the transmission connecting block, the perforated adsorption membrane, the elastic separation membrane, the regulating tube and the negative pressure tube, the prepreg can be continuously fed while keeping part of the surface of the perforated adsorption membrane and the outer prepreg still for a certain period of time, so that the bubbles in the outer prepreg base material can be removed by the negative pressure in the partial cavity inside the perforated adsorption membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure provided by the present invention.

[0016] Figure 2 It is a schematic diagram of the first bellows in the present invention.

[0017] Figure 3 It is a schematic diagram of the first motor in the present invention.

[0018] Figure 4 It is a schematic diagram of the current equalizing plate in the present invention.

[0019] Figure 5 It is a schematic diagram of the sliding sleeve in the present invention.

[0020] Figure 6 It is a schematic diagram of the constraint slot block in the present invention.

[0021] Figure 7 It is a schematic diagram of the first gear in the present invention.

[0022] Figure 8 Schematic diagram of the elastic separation membrane in the present invention.

[0023] In the figure: 101, preheating box; 102, hot pressing roller; 103, inner layer prepreg; 104, outer layer prepreg; 105, vibration generator; 201, first bellows; 202, second bellows; 203, connecting wind tube; 204, mounting frame; 205, first motor; 206, cam; 207, constraint slot block; 208, first vacuum box; 209, sliding sleeve; 210, sliding block; 211, first one-way valve; 212, constraint slider; 213, isolation plate; 214, second one-way valve; 215, second vacuum box; 216, vacuum regulating valve; 217, first connecting pipe; 218, second connecting pipe; 219, beam box; 220, flow equalizing plate; 221, L-shaped splitter plate; 222, fan blade; 223, elastic roller; 224, heater; 225, second motor; 301, first gear; 302, second gear; 303, transmission connection block; 304, adsorption membrane with holes; 305, elastic separation membrane; 306, regulating tube; 307, negative pressure tube; 308, first strip groove; 309, second strip groove. DETAILED DESCRIPTION

[0024] 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 accompanying 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 to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] like Figures 1 to 8 As shown, an embodiment of the present invention provides a fiber prepreg multilayer integrated molding composite device, including 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 penetrated inside 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, including: The preheating box 101 is symmetrically provided with a first wind box 201 and a second wind box 202, and the first wind box 201 and the second wind box 202 are used to preheat the inner layer prepreg 103 and the outer layer prepreg 104 laid on the surface thereof with hot air; A connecting wind tube 203 is provided between the first wind box 201 and the second wind box 202. A fan blade 222 is provided inside the connecting wind tube 203. The fan blade 222 is used to drive the hot air inside the connecting wind tube 203 to flow toward the inside of the first wind box 201. The cam 206, the sliding sleeve 209, the sliding block 210 and the first vacuum box 208 are arranged inside the connecting air cylinder 203. The sliding sleeve 209 and the sliding block 210 are reciprocated by the rotation of the cam 206, and the internal gas of the first vacuum box 208 is continuously extracted through the first one-way valve 211 arranged inside the first vacuum box 208 and the second one-way valve 214 arranged inside the sliding block 210, so that the interior of the first vacuum box 208 is maintained in vacuum; The interior of the preheating box 101 is symmetrically provided with a perforated adsorption film 304, and the interior of the perforated adsorption film 304 is provided with an elastic partition membrane 305 and an adjustment tube 306. The interior of the perforated adsorption film 304 is divided into a plurality of cavities by the elastic partition membrane 305 and the adjustment tube 306, so that a negative pressure is generated in the cavity corresponding to the bonding part of the perforated adsorption film 304 and the outer prepreg 104, and the perforated adsorption film 304 is rotated following the feeding movement of the outer prepreg 104, and the bubbles in the matrix material of the outer prepreg 104 are removed by 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.

[0026] In the embodiment of the present invention, during the multi-layer integrated molding of the fiber prepreg, the fiber prepreg is hot pressed layer by layer. Initially, two or three layers of the fiber prepreg are laid and inserted into the first wind box 201 and the second wind box 202. Among the multi-layer prepreg, the inner layer is the inner prepreg 103, and the outer layer is the outer prepreg 104. After being preheated by the hot air of the first wind box 201 and the second wind box 202, the matrix material on the surface of the outer prepreg is preliminarily melted, and the vibration generator 105 is started, so that the vibration generator 105 drives the inner prepreg 103 through the preheating box 101. 03 and the outer prepreg 104 vibrate, thereby promoting the discharge of bubbles in the fiber prepreg matrix material and making the matrix material on the surface of the fiber prepreg more evenly distributed. During the feeding process of the inner prepreg 103 and the outer prepreg 104, the surface of the outer prepreg 104 is adhered to by the porous adsorption film 304, and a low-pressure vacuum environment is generated in the partial cavity separated by the elastic separation film 305 of the porous adsorption film 304 through the negative pressure of the first vacuum box 208, and the bubbles are removed from the matrix material in the flowing state on the surface of the outer prepreg 104 through the pores on the surface of the porous adsorption film 304. 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; 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.

[0027] 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.

[0028] 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.

[0029] 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 .

[0030] In the embodiment of the present invention, the function of the flow equalizing plate 220 is to more evenly divert the hot air flow blown into the first wind box 201 from the connecting wind tube 203 to the positions close to the two ends of the flow equalizing plate 220, and divert it again after passing through the L-shaped diverter plate 221, so that the hot air flow is blown more evenly toward the surface of the outer prepreg 104, thereby facilitating uniform heating of the surface of the outer prepreg 104, facilitating uniform flow of the matrix material on the surface of the outer prepreg 104, and facilitating the improvement of the discharge efficiency of bubbles inside the matrix material.

[0031] 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 conflict with the corresponding first bellows 201 and the second bellows 202. The first bellows 201 and the second bellows 202 are located between the two groups of elastic rollers 223. The elastic rollers 223 are rotatably connected to the inner wall of the preheating box body 101 through two sixth bearings.

[0032] In the embodiment of the present invention, the elastic roller 223 is elastic. When the outer prepreg 104, which is composed of an inner prepreg 103 of different thicknesses and an outer prepreg 104, collides with the elastic roller 223, the elastic roller 223 will be elastically deformed. The elastic roller 223 has little effect 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 wind tube 203 is not easy to leak from the rectangular tube groove opened on the surface of the first wind box 201 and the second wind box 202 to the inside of the preheating box 101. The vibration generator 105 drives the elastic roller 223 to vibrate through the preheating box 101, so that the matrix material in a flowing state on the surface of the outer prepreg 104 is evenly distributed and is conducive to the discharge of bubbles.

[0033] The connecting air duct 203 is fixedly connected in a reserved circular groove opened on the surface of the first air box 201 and the second air box 202, the interior of the connecting air duct 203 is fixedly connected with a mounting frame 204, the interior of the mounting frame 204 is installed with a first motor 205, the end of the output shaft of the first motor 205 is fixedly connected with a fan blade 222, and the interior of the connecting air duct 203 is installed with a heater 224.

[0034] In the embodiment of the present invention, the first motor 205 inside the mounting frame 204 is operated to cause the fan blades 222 to rotate. The rotation of the fan blades 222 causes the airflow to be heated by the heater 224 and then blown into the interior of the first wind box 201. Most of the hot air flows through the beam box 219 and the second wind box 202 and returns to the interior of the connecting wind tube 203, so as to reduce the loss of heat of the airflow, thereby helping to reduce the heating energy consumption of the heater 224.

[0035] The cam 206 is fixedly connected to the surface of the output shaft of the first motor 205, and the second vacuum box 215 is fixedly connected to the first through groove opened on the surface of the connecting air cylinder 203, and the second vacuum box 215 is fixedly connected to the second through groove opened on the surface of the first vacuum box 208. The first one-way valves 211 are respectively installed in the third through grooves opened in a ring array on the surface of the first vacuum box 208. The sliding sleeve 209 is fixedly connected to the surface of the first vacuum box 208 in a ring array. The first one-way valves 211 are respectively located inside the corresponding sliding sleeves 209, and the sliding blocks 210 are slidably connected inside the sliding sleeves 209. The surface of the cam 206 is symmetrically fixedly connected with the constraint groove blocks 207, and the surface of the sliding block 210 is symmetrically fixedly connected with the constraint sliders 212. The constraint sliders 212 are respectively slidably connected inside the corresponding constraint groove blocks 207. The interior of the sliding block 210 is fixedly connected with an 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.

[0036] In the embodiment of the present invention, when the first motor 205 is running to rotate the fan blade 222, 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 slider 212 on the surface of the sliding block 210 to continuously slide inside the groove body on the surface of the constraint groove block 207, thereby driving the sliding block 210 to continuously reciprocate 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 is discharged through the first one-way The valve 211 enters the interior of the sliding sleeve 209, and the gas outside the sliding sleeve 209 cannot enter the interior of the sliding sleeve 209 through the second one-way valve 214. When the sliding block 210 moves close to the sliding sleeve 209 inside the sliding sleeve 209, the gas inside the sliding sleeve 209 cannot enter the interior of the first vacuum box 208 through the first one-way valve 211. The gas inside the sliding sleeve 209 is discharged from the interior of the sliding sleeve 209 through the second one-way valve 214 on the surface of the isolation plate 213. This process makes the interior of the first vacuum box 208 in a low-pressure vacuum state.

[0037] Both ends of the porous adsorption membrane 304 are fixedly connected with a transmission connection block 303, and a plurality of first gears 301 are equidistantly arranged in the first tooth groove opened on the surface of the transmission connection block 303. The first gear 301 is meshed with the transmission connection block 303, and the first gear 301 is rotatably connected to the inner wall of the preheating box 101 through a first bearing. One of the preheating boxes 101 is equipped with two second motors 225, and the output shafts of the two second motors 225 extend to the interior of the preheating box 101 through the fifth through groove opened on the surface 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, and a second gear 302 is arranged between two adjacent first gears 301. The second gear 302 is rotatably connected to the inner wall of the preheating box 101 through a second bearing, and the second gear 302 is meshed with the two first gears 301.

[0038] The regulating tube 306 is rotatably connected in the first circular grooves opened on the surfaces of the corresponding two transmission connection blocks 303 through two third bearings and two first dynamic seals. The regulating tube 306 is fixedly connected to the surface of the first gear 301 which is not in contact with the second motor 225 and whose two center axes coincide with each other. The inside of the regulating tube 306 is rotatably connected with a negative pressure tube 307. The negative pressure tube 307 is fixedly connected in the second circular groove opened on the surface of the preheating box 101. The negative pressure tube 307 is rotatably connected to the corresponding first gear 301 through a fourth bearing and a second dynamic seal.

[0039] A second strip groove 309 is provided on the surface of the negative pressure tube 307, and the opening of the second strip groove 309 faces downward. The elastic separation membrane 305 is arranged in a ring array on the surface of the regulating tube 306. The elastic separation membranes 305 are fixedly connected to the perforated adsorption membrane 304, the transmission connecting 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 a first strip groove 308 is arranged between any two adjacent elastic separation membranes 305.

[0040] In the embodiment of the present invention, the porous 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 that it is convenient to maintain good sealing after being bonded to the surface of the outer prepreg 104. The transmission connection blocks 303 on both sides of the porous adsorption film 304 are meshed with the first gear 301 through the first tooth groove, so that the porous adsorption film 304 generates a constraint force in the axial direction of the first gear 301, so that when a low-pressure vacuum area is formed inside the porous adsorption film 304, the shape remains stable, which is convenient for it to be stably bonded to the outer prepreg 104. Through the drive of the second motor 225, the first gear 301 synchronously drives the porous adsorption film 304 to rotate under the drive of the second gear 302, so that the porous adsorption film 304 cooperates with the feeding of the outer prepreg 104 and always maintains a relative stillness with the outer prepreg 104 for a certain period of time, so that the porous adsorption film 304 is convenient for vacuum degassing operation on the surface of the outer prepreg 104; 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 be specifically a synchronous belt. The first tooth groove of the synchronous belt completely wraps the teeth of the first gear 301, so that the rotation of the first gear 301 can drive the transmission connection block 303 to rotate. At the same time, the first tooth groove wraps the teeth of the first gear 301 to generate a constraint force along the axial direction of the first gear 301 on the porous adsorption film 304. The transmission connection block 303 is fixedly connected to the porous adsorption film 304 through the elastic sealing film, and the elastic separation film 305 is fixedly connected to the flexible sealing film on the surface of the transmission connection block 303. The surface of the flexible sealing film is provided with a first circular groove, which is convenient for the connection between the adjustment tube 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 porous adsorption film 304 maintain airtightness; The part of the surface of the negative pressure tube 307 that fits with the inner wall of the regulating tube 306 blocks the first strip groove 308 on the surface of the regulating tube 306, and the second strip groove 309 opened on the surface of the negative pressure tube 307 is connected to the inside of the first strip groove 308, so that when negative pressure is generated inside the negative pressure tube 307, in the several cavities surrounded by the elastic separation membrane 305, the regulating tube 306, the transmission connecting block 303 and the porous adsorption membrane 304, the surface of the porous adsorption membrane 304 corresponding to the cavity connected to the inside of the second strip groove 309 is in contact with the outer layer prepreg 104, which will remove the bubbles inside the matrix material on the surface of the outer layer prepreg 104.

[0041] A vacuum regulating valve 216 is installed in the third circular groove opened on the surface of the second vacuum box 215, a first connecting pipe 217 is fixedly connected to the 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 the second connecting pipe 218, and both ends of the negative pressure pipe 307 are fixedly connected to the sixth through groove opened on the surface of the second connecting pipe 218.

[0042] 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 tube 217 and the second connecting tube 218 connect the interior of the second vacuum box 215 with the interior of the negative pressure tube 307, so that the porous adsorption film 304 can remove bubbles inside the matrix material of the outer layer prepreg 104 through the action of negative pressure.

[0043] It should be noted that: the device needs to be used in conjunction with a cooling device (not shown in the figure), a prepreg tensioning device (not shown in the figure), a layering device (not shown in the figure), and a winding and unwinding device (not shown in the figure). The working principle, installation method and use method of the hot pressing roller machine 102, the vibration generator 105, the cooling device, the tensioning device, the winding and unwinding device are well known in the prior art and will not be described in detail here. The use of high temperature resistant porous membranes is well known in the prior art and will not be described in detail here.

[0044] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection 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).

Images