A carbon fiber composite forming device and method

Abstract

The present invention discloses a forming device and method for carbon fiber composite materials, comprising an inner mold mechanism, a lower mold mechanism, a side mold mechanism, an upper mold mechanism and a support frame structure; a carbon fiber blank is sleeved on the outer side surface of the inner mold mechanism; the lower mold mechanism is sleeved below the inner mold mechanism and is attached to the outer surface of the carbon fiber blank; the side mold mechanism is arranged on both sides of the inner mold mechanism and includes two symmetrically arranged side pushing cylinders, and the end surface of the side pushing cylinder facing the inner mold mechanism is correspondingly arranged with the carbon fiber blank; the upper mold mechanism is arranged above the inner mold mechanism and is correspondingly arranged with the lower mold mechanism; the support frame structure is used to support the whole set of forming equipment and is fixedly installed with the lower mold mechanism, the upper mold mechanism and the side mold mechanism respectively. The structure of the present invention is compact, occupies a small area, is convenient and fast for mold closing and mold opening, the mold can be opened and closed conveniently in all directions, which can greatly accelerate the forming speed and forming efficiency of carbon fiber composite materials and improve the production efficiency of batch carbon fiber composite parts.

Description

Technical Field

[0001] The present invention relates to the field of carbon fiber forming, and particularly to a carbon fiber composite forming device and method. Background Art

[0002] In the past one or two decades, the development of carbon fiber in China has been very rapid. Its manufacturing technology and the forming of carbon fiber composites have become an independent and cutting-edge modern engineering technology. Carbon fiber composites have the advantages of high strength, excellent heat resistance, excellent thermal shock resistance, low coefficient of thermal expansion, small heat capacity, small specific gravity, excellent corrosion and radiation resistance, etc. With the continuous accumulation of usage experience, carbon fiber composites will be promoted and applied in a wider range. Therefore, further improving the performance of carbon fiber composites and reducing costs has become the mainstream of the development of modern carbon fiber composites. Among them, efficient, energy-saving, and low-cost forming and manufacturing technologies are important aspects of the low-cost of composites.

[0003] The forming methods of carbon fiber composites generally include hand lay-up molding, autoclave molding, compression molding, filament winding molding, RTM molding, pultrusion molding. Among them, compression molding technology has the advantages of high efficiency, good quality of the parts, high dimensional accuracy, and little influence by the environment, and is suitable for the forming of batch-produced and high-strength composite parts; however, the pre-mold manufacturing is complex, the investment is high, the operation process is cumbersome, the production efficiency is low, and the size of the parts is limited by the size of the press. Summary of the Invention

[0004] The purpose of the present invention is to provide a carbon fiber composite forming device and method to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides a carbon fiber composite forming device, including

[0006] an inner mold mechanism, and a carbon fiber blank is sleeved on the outer side surface of the inner mold mechanism;

[0007] a lower mold mechanism, which is sleeved below the inner mold mechanism, and the inner surface of the lower mold mechanism is attached to the outer surface of the carbon fiber blank;

[0008] a side mold mechanism, which is arranged on both sides of the inner mold mechanism; the side mold mechanism includes two symmetrically arranged side push cylinders, and the end surface of the side push cylinder facing the inner mold mechanism is arranged corresponding to the carbon fiber blank;

[0009] an upper mold mechanism, which is arranged above the inner mold mechanism, and the upper mold mechanism is arranged corresponding to the lower mold mechanism;

[0010] Support frame structure, the support frame structure is used to support the whole forming equipment; the support frame structure is fixedly installed with the lower die mechanism, the upper die mechanism and the side die mechanism respectively.

[0011] Preferably, the inner die mechanism includes an inner die cylinder, and the carbon fiber blank is sleeved on the inner die cylinder; a support rod is fixedly connected to the center of the inner die cylinder, and both ends of the support rod are detachably connected to two side push cylinders respectively.

[0012] Preferably, the side push cylinder includes a sleeve, the inner wall of the sleeve is adapted to the outer wall of the inner die cylinder, and the wall thickness of the sleeve is the same as the thickness of the carbon fiber blank; a support plate is fixedly connected inside the sleeve, and a fixing frame is fixedly connected to one end of the support plate facing the support rod; the end of the support rod is lapped on the fixing frame; one end of the support plate away from the inner die cylinder is fixedly installed with the support frame structure through a first power assembly.

[0013] Preferably, the lower die mechanism includes a lower furnace body fixedly connected to the support frame structure, a lower die body is sleeved in the inner cavity of the lower furnace body, and the outer wall of the lower die body is fixedly connected to the support frame structure; the top surface of the inner cavity of the lower die body abuts against the carbon fiber blank.

[0014] Preferably, the upper die mechanism includes an upper furnace body arranged corresponding to the lower furnace body, and the upper furnace body is fixedly installed with the support frame structure through a second power device; an upper die body corresponding to the lower die body is detachably connected in the inner cavity of the upper furnace body, and the inner cavity of the upper die body abuts against the carbon fiber blank; the upper die body is fixedly connected to the support frame structure through a third power device.

[0015] Preferably, the support frame structure includes two side brackets arranged oppositely, and the first power assembly is fixedly installed on the side brackets; a bottom frame is arranged between the two side brackets, and the lower furnace body and the lower die body are respectively fixedly installed on the bottom frame; two parallel guide rails are fixedly connected to the tops of the two side brackets, a sliding frame is slidably connected between the two guide rails, and a fourth power device is arranged between the sliding frame and the guide rails; the second power device and the third power device are respectively fixedly connected to the sliding frame.

[0016] Preferably, the first power assembly includes a first power device and a guiding device, and the base of the first power device is fixedly installed on the side wall of the side bracket; the guiding device includes two groups of guiding rods fixedly connected in parallel between the two side brackets, the two groups of guiding rods are symmetrically arranged on both sides of the first power device, and a guide slider is slidably connected to each group of guiding rods, and the guide slider is fixedly connected to the outer wall of the sleeve.

[0017] Preferably, the bottom end of the second power device is fixedly mounted on the slide, and the output end of the second power device is fixedly connected to the upper furnace body; the base of the third power device is fixedly mounted on the slide, and the output end of the third power device is fixedly connected to the upper mold body; the output end of the fourth power device is fixedly connected to the side wall of the slide, and the base of the fourth power device is fixedly connected to the guide rail.

[0018] A method for forming a carbon fiber composite material comprises the following steps:

[0019] Winding the carbon fiber blank onto the inner mold mechanism;

[0020] Install the inner mold mechanism;

[0021] The upper die mechanism and the lower die mechanism are closed;

[0022] Carbon fiber blanks are formed under high temperature and high pressure;

[0023] The upper mold mechanism is lifted and the inner mold mechanism is taken out.

[0024] Preferably, in the step of high temperature and high pressure forming of the carbon fiber blank, the carbon fiber blank is first heated to 300°C-350°C by closing the upper furnace body and the lower furnace body, and kept warm for 20min-30min; then heated to 600°C-650°C, and kept warm for 20min-30min; during the heating and insulation process, the side mold mechanism applies a pressure of 6MPa-5MPa toward the carbon fiber blank.

[0025] The present invention discloses the following technical effects: The present invention discloses a carbon fiber composite material forming device and method, the carbon fiber blank is wound onto the inner mold mechanism, the inner mold mechanism is placed into the lower mold mechanism, two side push cylinders are used to hold the two ends, and then the upper mold mechanism and the lower mold mechanism are molded together, and a closed mold cavity is formed by the upper mold mechanism, the lower mold mechanism and the side mold mechanism, and heating is performed. The side push cylinders constantly pressurize the carbon fiber blank from both sides to form a high temperature and high pressure coupling environment to form the carbon fiber blank; the forming device of the present invention divides the forming mold into an inner mold mechanism, a side mold mechanism, an upper mold mechanism and a lower mold mechanism, and the side mold mechanism and the upper mold mechanism are driven to move by a support frame structure, so as to facilitate the rapid removal of the inner mold mechanism and accelerate production efficiency. The present invention has a compact structure, a small footprint, convenient and quick mold closing and demolding, and convenient mold opening and closing in all directions, which can greatly accelerate the forming speed and forming efficiency of carbon fiber composite materials and improve the production efficiency of batch carbon fiber composite parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0027] Figure 1 It is a three-dimensional view of the carbon fiber composite forming equipment of the present invention;

[0028] Figure 2 It is a front view of the carbon fiber composite forming equipment of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the carbon fiber composite forming equipment of the present invention;

[0030] Figure 4 It is Figure 3 a partial enlarged view of A in

[0031] Figure 5 It is Figure 3 a partial enlarged view of B in

[0032] Figure 6 It is Figure 3 a partial enlarged view of C in

[0033] Figure 7 It is a structural sketch of the carbon fiber composite forming equipment of the present invention;

[0034] Among them, 1, carbon fiber blank; 2, inner mold mechanism; 3, lower mold mechanism; 4, side mold mechanism; 5, upper mold mechanism; 6, support frame structure; 21, inner mold cylinder; 22, support rod; 23, lifting lug; 31, lower furnace body; 32, lower mold body; 41, sleeve; 42, support plate; 43, fixing frame; 44, heat insulation pad; 45, first power device; 46, guide rod; 47, guide slider; 48, ejector rod; 51, upper furnace body; 52, upper mold body; 53, second power device; 54, third power device; 61, side support; 62, chassis; 63, guide rail; 64, sliding frame; 65, fourth power device; 66, sunken pit. Specific embodiments

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figure 1-7 The present invention provides a carbon fiber composite material forming device, comprising an inner mold mechanism 2, the outer side surface of the inner mold mechanism 2 is sleeved with a carbon fiber blank 1;

[0038] A lower mold mechanism 3, the lower mold mechanism 3 is sleeved below the inner mold mechanism 2, and the inner surface of the lower mold mechanism 3 is in contact with the outer surface of the carbon fiber blank 1;

[0039] The side mold mechanism 4 is arranged on both sides of the inner mold mechanism 2; the side mold mechanism 4 includes two symmetrically arranged side push cylinders, and the end surfaces of the side push cylinders facing the inner mold mechanism 2 are arranged corresponding to the carbon fiber blank 1;

[0040] An upper mold mechanism 5, which is arranged above the inner mold mechanism 2, and the upper mold mechanism 5 is arranged corresponding to the lower mold mechanism 3;

[0041] The support frame structure 6 is used to support the entire forming equipment; the support frame structure 6 is fixedly installed with the lower mold mechanism 3, the upper mold mechanism 5 and the side mold mechanism 4 respectively.

[0042] The present invention winds a carbon fiber blank 1 onto an inner mold mechanism 2, places the inner mold mechanism 2 into a lower mold mechanism 3, holds both ends of the inner mold mechanism 2 against two side push cylinders, then closes the upper mold mechanism 5 with the lower mold mechanism 3, forms a closed mold cavity with the upper mold mechanism 5, the lower mold mechanism 3 and the side mold mechanism 4, heats the cavity, and applies constant pressure to the carbon fiber blank 1 from both sides to form a high-temperature and high-pressure coupling environment to shape the carbon fiber blank 1; the forming device of the present invention divides the forming mold into an inner mold mechanism 2, a side mold mechanism 4, an upper mold mechanism 5 and a lower mold mechanism 3, and the side mold mechanism 4 and the upper mold mechanism 5 are driven to move by a support frame structure 6, so as to facilitate the rapid removal of the inner mold mechanism 2 and improve production efficiency.

[0043] Further optimization scheme, the inner mold mechanism 2 includes an inner mold cylinder 21, and the carbon fiber blank 1 is sleeved on the inner mold cylinder 21; the center of the inner mold cylinder 21 is fixedly connected with a support rod 22, and the two ends of the support rod 22 are detachably connected to the two side push cylinders. A fixing device is provided in the inner cavity of the inner mold cylinder 21, and the inner mold cylinder 21 is fixed together with the support rod 22 through the fixing device, and then the carbon fiber filaments impregnated with adhesive are wound on the outer wall of the inner mold cylinder 21 by a winding machine (not shown in the figure) to form a carbon fiber blank 1; in this embodiment, the length of the carbon fiber blank 1 is 1m, and the length of the carbon fiber composite after pressing is 500mm, the diameter and thickness remain unchanged, and the density and strength are increased.

[0044] Furthermore, lifting lugs 23 are detachably connected to both ends of the inner mold cylinder 21 to facilitate the lifting of the inner mold cylinder 21; the lifting lugs 23 are fixed to the inner mold cylinder 21 in a form such as by threading or clamping that is convenient for installation and disassembly.

[0045] Furthermore, the outer surface of the inner mold cylinder 21 is coated with an anti-sticking coating to prevent the formed carbon fiber composite from sticking to the inner mold cylinder 21, reduce the difficulty of demolding, and prevent damage to the carbon fiber composite during the demolding process.

[0046] In a further optimized solution, the side pushing cylinder includes a sleeve 41. The inner wall of the sleeve 41 is adapted to the outer wall of the inner mold cylinder 21, and the wall thickness of the sleeve 41 is the same as the thickness of the carbon fiber blank 1; a support plate 42 is fixedly connected inside the sleeve 41, and a fixing frame 43 is fixedly connected to one end of the support plate 42 facing the support rod 22; the end of the support rod 22 is lapped on the fixing frame 43; the end of the support plate 42 away from the inner mold cylinder 21 is fixedly installed with the support frame structure 6 through a first power assembly. The inner diameter of the inner wall of the sleeve 41 is the same as the outer diameter of the inner mold cylinder 21, and the wall thickness of the side pushing cylinder is the same as that of the formed carbon fiber composite; when the side pushing cylinder is closed, the inner mold cylinder 21 enters the inner cavity of the sleeve 41, and the end wall of the sleeve 41 abuts against both ends of the carbon fiber blank 1, and under the push of the first power assembly, pressure is applied to the carbon fiber blank 1 to form it.

[0047] Furthermore, a groove adapted to the support rod 22 is provided on the top surface of the fixing frame 43 to facilitate the positioning of the inner mold mechanism 2 and prevent deviation.

[0048] Furthermore, in order to tighten the support rod 22 of the inner mold mechanism 2, a push rod 48 is provided on the fixing frame 43. One end of the push rod 48 is fixedly connected to the support plate 42, and the other end of the push rod 48 is arranged corresponding to the end of the support rod 22. When the side pushing cylinder moves towards the center, the support rod 22 first slides on the fixing frame 43 until it is tightened by the push rods 48 at both ends, preventing the inner mold mechanism 2 from deflecting and falling.

[0049] For a further optimized solution, the lower die mechanism 3 includes a lower furnace body 31 fixedly connected to the support frame structure 6. The inner cavity of the lower furnace body 31 is sleeved with a lower die body 32, and the outer wall of the lower die body 32 is fixedly connected to the support frame structure 6; the top surface of the inner cavity of the lower die body 32 abuts against the carbon fiber blank 1; the upper die mechanism 5 includes an upper furnace body 51 arranged corresponding to the lower furnace body 31, and the upper furnace body 51 is fixedly installed on the support frame structure 6 through a second power device 53; the inner cavity of the upper furnace body 51 is detachably connected with an upper die body 52 arranged corresponding to the lower die body 32, and the inner cavity of the upper die body 52 abuts against the carbon fiber blank 1; the upper die body 52 is fixedly connected to the support frame structure 6 through a third power device 54. After the lower furnace body 31 and the upper furnace body 51 are closed, they form a complete heating furnace for heating the inner die mechanism 2 in the furnace cavity to create the temperature conditions for the forming of the carbon fiber composite part; after the lower die body 32 and the upper die body 52 are closed, they form a cylinder, and the inner walls of the cylinder respectively abut against the outer wall of the sleeve 41 and the outer wall of the carbon fiber blank 1 to prevent the carbon fiber blank 1 from wrinkling and deforming during the heating and pressurizing of the carbon fiber material by the heating furnace and the side pushing cylinder.

[0050] Further, the upper furnace body 51 and the lower furnace body 31 are an opening and closing type heating furnace, and the heating furnace includes but is not limited to an electric furnace and an induction furnace, and has functions of constant temperature control, temperature keeping and rapid heating.

[0051] Further optimization solution: The support frame structure 6 includes two relatively arranged side brackets 61, and the first power assembly is fixedly installed on the side brackets 61; a bottom frame 62 is arranged between the two side brackets 61, and the lower furnace body 31 and the lower mold body 32 are respectively fixedly installed on the bottom frame 62; two parallel guide rails 63 are fixedly connected to the tops of the two side brackets 61, a carriage 64 is slidably connected between the two guide rails 63, and a fourth power device 65 is arranged between the carriage 64 and the guide rails 63; the second power device 53 and the third power device 54 are respectively fixedly connected to the carriage 64. The two side brackets 61 are used to support the guide rails 63, the bottom surface of the guide rails 63 is higher than the top surface of the upper furnace body 51, and at the same time, the opposite side walls of the side brackets 61 are used to fix the first power assembly fixedly connected to the side push cylinder; when closing the mold, the third power device 54 first lowers the upper mold body 52 to close the mold with the lower mold body 32, and then lowers the upper furnace body 51 with the third power device 54 until it closes the mold with the lower furnace body 31; the second power device 53 and the third power device 54 maintain pressure output during mold closing, so that the upper furnace body 51 and the lower furnace body 31 are closely combined, and the upper mold body 52 and the lower mold body 32 are closely combined; when demolding, first use the second power device 53 to pull the upper furnace body 51 up until the mounting block on the upper furnace body 51 abuts against the positioning block on the carriage 64, and then use the third power device 54 to pull the upper mold body 52 up by the same height, preferably the rising height is 500 mm - 700 mm; finally, use the fourth power device 65 to drive the upper mold body 52 and the upper furnace body 51 to deviate along the sliding rail direction through the carriage 64, leaving the position at the top of the inner mold mechanism 2 empty, facilitating the hoisting of the inner mold mechanism 2 by a traveling crane (not shown in the figure); when closing the mold again, use the fourth power device 65 to move the carriage 64 back directly above the inner mold mechanism 2 to close the mold again.

[0052] Further, in order to reduce the overall height of the device and reduce the required height for demolding and mold closing, a sunken pit 66 is excavated below the lower mold mechanism 3, and the bottom end of the bottom frame 62 is fixedly installed in the sunken pit 66.

[0053] Further optimization solution: The first power assembly includes a first power device 45 and a guiding device. The base of the first power device 45 is fixedly installed on the side wall of the side bracket 61; the guiding device includes two groups of guide rods 46 fixedly connected in parallel between the two side brackets 61. The two groups of guide rods 46 are symmetrically arranged on both sides of the first power device 45, and a guide slider 47 is slidably connected to each group of guide rods 46. The guide slider 47 is fixedly connected to the outer wall of the sleeve 41. The first power device 45 is used to push the side push cylinder to provide a constant pressure to the carbon fiber blank 1; the guide slider 47 and the two groups of guide rods 46 on both sides can be used to support the sleeve 41 stably, prevent the sleeve 41 from deflecting due to external force and causing gaps during mold closing, which affects the quality of the carbon fiber composite. Secondly, the guide rods 46 and the guide slider 47 can also reduce the friction force when the sleeve 41 moves, making the movement of the sleeve 41 smoother and preventing the pressure of the first power device 45 from being unstable due to the friction force.

[0054] Further, in order to prevent the heat of the heating furnace from being transferred to the first power device 45 during the heating process, resulting in a failure of the first power device 45, a heat insulation pad 44 is provided at the connection position between the output end of the first power device 45 and the support plate 42.

[0055] Further, in order to reduce heat dissipation during the heating process, heat insulation material coatings are provided on the outer surfaces of the upper furnace body 51 and the lower furnace body 31.

[0056] In a further optimized solution, the bottom end of the second power device 53 is fixedly installed on the carriage 64, and the output end of the second power device 53 is fixedly connected to the upper furnace body 51; the base of the third power device 54 is fixedly installed on the carriage 64, and the output end of the third power device 54 is fixedly connected to the upper die body 52; the output end of the fourth power device 65 is fixedly connected to the side wall of the carriage 64, and the base of the fourth power device 65 is fixedly connected to the guide rail 63.

[0057] A method for forming a carbon fiber composite material includes the following steps:

[0058] Wind the carbon fiber blank 1 onto the inner die mechanism 2; prepare the inner die cylinder 21 with an anti-sticking coating on the outer surface, and then evenly wind the carbon fiber impregnated with the adhesive on the outer surface of the inner die cylinder 21. The winding length and diameter are selected according to actual design requirements.

[0059] Install the inner die mechanism 2; drive the carriage 64 to move away from above the lower die mechanism 3 through the fourth power device 65, then install the lifting lugs 23 at both ends of the inner die cylinder 21 wound with carbon fiber, and then use a crane to lift the inner die mechanism 2 and place it on the two fixing frames 43, so that the support rods 22 of the inner die mechanism 2 fall into the grooves of the fixing frames 43, and then remove the lifting lugs 23.

[0060] Close the upper die mechanism 5 and the lower die mechanism 3; first use the fourth power device 65 to drive the offset carriage 64 back to directly above the inner die mechanism 2, so that the upper die body 52 is aligned with the lower die body 32, and the upper furnace body 51 is aligned with the lower furnace body 31; start the third power device 54 to move the upper die body 52 downward until it is aligned and abutted against the lower die body 32, then start the second power device 53 to move the upper furnace body 51 downward until it is aligned and abutted against the lower furnace body 31, and finally start the first power device 45 to push the sleeve 41 to move towards the center, so that both ends of the inner die cylinder 21 slide into the inner cavity of the sleeve 41, and the end face of the sleeve 41 abuts against the end face of the carbon fiber blank 1.

[0061] The carbon fiber blank 1 is formed under high temperature and high pressure; the heating furnace formed by starting the upper furnace body 51, the lower furnace body 31 and the mold is started, and at the same time as the heating furnace is started, the first power device 45 is started to apply pressure to the carbon fiber blank 1; first, the carbon fiber blank 1 is heated to 300°C - 350°C by the heating furnace and kept warm for 20 min - 30 min; then it is heated to 600°C - 650°C and kept warm for 20 min - 30 min; during the heating and heat preservation process, the side mold mechanism 4 applies a pressure of 6 MPa - 15 MPa to the carbon fiber blank 1. After the time is up, the heating is stopped and the carbon fiber blank is waited to cool naturally.

[0062] Further, the temperature of the first heating is preferably 350°C and the heat preservation time is preferably 30 min; the temperature of the second heating is preferably 650°C and the heat preservation time is preferably 30 min; during the heating process, the pressure applied to the carbon fiber blank 1 by the first power device 45 through the sleeve 41 is preferably a constant 10 MPa.

[0063] The upper mold mechanism 5 is lifted to take out the inner mold mechanism 2. After the carbon fiber blank 1 is cooled, first, the first power device 45 drives the sleeve 41 to move to both sides, so that the sleeve 41 is separated from the inner mold cylinder 21; then the second power device 53 is started to drive the upper furnace body 51 to rise 600 mm and stop stably, and then the third power device 54 is started to drive the upper mold body 52 to move up by a corresponding height and stop stably; the fourth power device 65 is started, and the upper furnace body 51 and the upper mold body 52 are driven by the carriage 64 to shift to one side, making way for directly above the inner mold mechanism 2; finally, a lifting lug 23 is installed on the inner mold cylinder 21, and the inner mold mechanism 2 is lifted away by a crane and the pressed carbon fiber specimen is taken off from the inner mold cylinder 21, and then the carbon fiber composite specimen can be obtained.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0065] The above embodiments only describe the preferred mode of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A carbon fiber composite forming device, characterized in that: It includes an inner mold mechanism (2), with a carbon fiber blank (1) sleeved on the outer side surface of the inner mold mechanism (2); a lower mold mechanism (3), which is sleeved below the inner mold mechanism (2), and the inner surface of the lower mold mechanism (3) is attached to the outer surface of the carbon fiber blank (1); a side mold mechanism (4), which is arranged on both sides of the inner mold mechanism (2); the side mold mechanism (4) includes two symmetrically arranged side pushing cylinders, and the end surface of the side pushing cylinder facing the inner mold mechanism (2) is arranged corresponding to the carbon fiber blank (1); an upper mold mechanism (5), which is arranged above the inner mold mechanism (2), and the upper mold mechanism (5) is arranged corresponding to the lower mold mechanism (3); a support frame structure (6), which is used to support the whole set of forming equipment; the support frame structure (6) is fixedly installed with the lower mold mechanism (3), the upper mold mechanism (5) and the side mold mechanism (4) respectively; the inner mold mechanism (2) includes an inner mold cylinder (21), and the carbon fiber blank (1) is sleeved on the inner mold cylinder (21); a support rod (22) is fixedly connected to the center of the inner mold cylinder (21); the lower mold mechanism (3) includes a lower furnace body (31) fixedly connected to the support frame structure (6), and a lower mold body (32) is sleeved in the inner cavity of the lower furnace body (31); the upper mold mechanism (5) includes an upper furnace body (51) arranged corresponding to the lower furnace body (31), and the upper furnace body (51) is fixedly installed with the support frame structure (6) through a second power device (53); an upper mold body (52) corresponding to the lower mold body (32) is detachably connected in the inner cavity of the upper furnace body (51), and the inner cavity of the upper mold body (52) abuts against the carbon fiber blank (1); the upper mold body (52) is fixedly connected to the support frame structure (6) through a third power device (54); the side pushing cylinder includes a sleeve (41), a support plate (42) is fixedly connected in the sleeve (41), and one end of the support plate (42) away from the inner mold cylinder (21) is fixedly installed with the support frame structure (6) through a first power assembly; the support frame structure (6) includes two relatively arranged side brackets (61), and the first power assembly is fixedly installed with the side brackets (61).

2. The carbon fiber composite forming device according to claim 1, characterized in that: Both ends of the support rod (22) are detachably connected to the two side pushing cylinders respectively.

3. The carbon fiber composite forming device according to claim 2, characterized in that: The inner wall of the sleeve (41) is adapted to the outer wall of the inner mold cylinder (21), and the wall thickness of the sleeve (41) is the same as the thickness of the carbon fiber blank (1); a fixing frame (43) is fixedly connected to one end of the support plate (42) facing the support rod (22); the end of the support rod (22) is lapped on the fixing frame (43).

4. The carbon fiber composite forming device according to claim 3, It is characterized in that: The outer wall of the lower die body (32) is fixedly connected to the support frame structure (6); the top surface of the inner cavity of the lower die body (32) abuts against the carbon fiber blank (1).

5. The carbon fiber composite forming device according to claim 1, It is characterized in that: A chassis (62) is arranged between the two side brackets (61), and the lower furnace body (31) and the lower die body (32) are respectively fixedly installed on the chassis (62); the tops of the two side brackets (61) are fixedly connected with two parallel guide rails (63), and a carriage (64) is slidably connected between the two guide rails (63). A fourth power device (65) is arranged between the carriage (64) and the guide rail (63); the second power device (53) and the third power device (54) are respectively fixedly connected to the carriage (64).

6. The carbon fiber composite forming device according to claim 5, It is characterized in that: The first power assembly includes a first power device (45) and a guiding device. The base of the first power device (45) is fixedly installed on the side wall of the side bracket (61); the guiding device includes two groups of guide rods (46) fixedly connected in parallel between the two side brackets (61). The two groups of guide rods (46) are symmetrically arranged on both sides of the first power device (45). A guide slider (47) is slidably connected to each group of guide rods (46), and the guide slider (47) is fixedly connected to the outer wall of the sleeve (41).

7. The carbon fiber composite forming device according to claim 6, It is characterized in that: The bottom end of the second power device (53) is fixedly installed on the carriage (64), and the output end of the second power device (53) is fixedly connected to the upper furnace body (51); the base of the third power device (54) is fixedly installed on the carriage (64), and the output end of the third power device (54) is fixedly connected to the upper die body (52); the output end of the fourth power device (65) is fixedly connected to the side wall of the carriage (64), and the base of the fourth power device (65) is fixedly connected to the guide rail (63).

8. A carbon fiber composite forming method, using the carbon fiber composite forming device according to any one of claims 1-7, It is characterized in that It includes the following steps: Winding the carbon fiber blank (1) onto the inner die mechanism (2); Installing the inner die mechanism (2); Closing the upper die mechanism (5) and the lower die mechanism (3); Forming the carbon fiber blank (1) under high temperature and high pressure; Lifting the upper die mechanism (5) and taking out the inner die mechanism (2).

9. The carbon fiber composite forming method according to claim 8, It is characterized in that: In the high-temperature and high-pressure forming step of the carbon fiber blank (1), first, the carbon fiber blank (1) is heated to 300°C - 350°C by the upper furnace body (51) and the lower furnace body (31) after being closed, and kept warm for 20 min - 30 min; then it is heated to 600°C - 650°C and kept warm for 20 min - 30 min; during the heating and heat preservation process, the side die mechanism (4) applies a pressure of 6 MPa - 15 MPa to the carbon fiber blank (1).

Images