Carbon fiber and epoxy resin interface forming device

Abstract

The utility model relates to the technical field of composite material forming, and discloses a carbon fiber and epoxy resin interface forming device which comprises a base table, an exhaust pipe is fixedly connected to one side of an upper mold, an exhaust channel is formed in the upper mold, and a plurality of connecting channels arranged in a linear array are formed in the upper mold; a plurality of air exhaust holes arranged in a linear array are formed in the upper mold in a penetrating mode, and a vacuum pump is fixedly connected to one side of the upper end of the movable plate. According to the carbon fiber and epoxy resin interface forming device, an exhaust system is formed through an exhaust channel, a connecting channel, an exhaust hole, a vacuum pump and a connecting pipe which are formed in the upper mold, air and bubbles in the mold can be removed, negative pressure is formed, the negative pressure effect is beneficial for resin to better infiltrate carbon fibers, and the carbon fiber interface forming efficiency is improved. Bubbles in the resin are discharged, so that the resin can fully infiltrate the carbon fibers, and the interface bonding quality and the overall performance of the composite material are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of composite material forming, in particular to a carbon fiber and epoxy resin interface forming device. BACKGROUND

[0002] Carbon fiber reinforced epoxy resin composite materials are widely used in the fields of aerospace, automobile industry and wind power generation due to their excellent properties such as high strength, high modulus and light weight.

[0003] However, the existing composite material forming device may cause bubbles and dry spots in the product during the composite material forming process, the bubbles may reduce the fiber wettability, affect the interface adhesion of the resin and the fiber, and thus reduce the strength of the composite material product and affect the use performance of the product. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the application provides a carbon fiber and epoxy resin interface forming device, which has the advantages of improving the strength of the finished product, and solves the problems that the existing composite material forming device may cause bubbles and dry spots in the product during the composite material forming process, the bubbles may reduce the fiber wettability, affect the interface adhesion of the resin and the fiber, and thus reduce the strength of the composite material product and affect the use performance of the product.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a carbon fiber and epoxy resin interface forming device, comprising a base, four limiting columns arranged in a rectangular array are fixedly connected to the upper end of the base, a top plate is fixedly connected to the upper end of the four limiting columns, a hydraulic rod is fixedly connected to the inside of the top plate, a moving plate is fixedly connected to the extension end of the hydraulic rod, an upper mounting table is fixedly connected to the bottom end of the moving plate through bolts, an upper mold is fixedly connected to the bottom end of the upper mounting table through bolts, an air extraction pipe is fixedly connected to one side of the upper mold, an air extraction channel is arranged in the inside of the upper mold, a plurality of connecting channels arranged in a straight line array are arranged in the inside of the upper mold, a plurality of air extraction holes arranged in a straight line array are arranged in the inside of the upper mold, a vacuum pump is fixedly connected to one side of the upper end of the moving plate, and a connecting pipe is fixedly connected to the air inlet end of the vacuum pump.

[0006] By the above scheme, through the air extraction channel, the connecting channel and the air extraction hole opened in the upper mold, and the vacuum pump and the connecting pipe, an exhaust system is formed, which can exhaust the air and bubbles in the mold and form negative pressure, so as to exhaust the bubbles in the resin and ensure that the resin can fully infiltrate the carbon fibers, improve the interface bonding quality of the composite material and the overall performance. The air extraction channel is arranged in the upper mold and is used for collecting and guiding the air in the mold. The connecting channel serves as a bridge to connect the air extraction channel and the air extraction holes, so as to ensure that the air can be smoothly exhausted. The vacuum pump is connected with the air extraction pipe through the connecting pipe, and the air extraction pipe is communicated with the air extraction channel of the upper mold. When the vacuum pump is started, it can generate negative pressure in the mold, drive the air and bubbles to pass through the air extraction hole, the connecting channel and the air extraction channel, and finally be exhausted out of the mold through the connecting pipe. The negative pressure effect helps the resin to better infiltrate the carbon fibers, ensures that each fiber is fully wrapped by the resin, avoids the retention and defects of the fibers in the resin, which helps to improve the interface bonding quality of the composite material and enhance the overall mechanical properties of the material.

[0007] Further, a plurality of positioning holes arranged in a layer rectangular array are formed in the mobile plate.

[0008] Through the above scheme, the design of the positioning hole enables the limiting column to accurately pass through and fix the mobile plate, ensuring that the mobile plate and the upper mold thereon can maintain stable movement during the forming process, which helps to avoid misplacement of the mold and ensure the consistency of product precision.

[0009] Further, a lower mounting table is fixedly connected to the upper end of the base, and a lower mold is fixedly connected to the upper end of the lower mounting table through bolts.

[0010] Through the above scheme, the lower mounting table serves as a support structure for the lower mold and is fixedly connected to the base through bolts, ensuring the stability of the entire forming device and preventing displacement or deformation of the mold during the forming process. The lower mold is connected to the lower mounting table through bolts, which makes the replacement and maintenance of the mold more convenient. When different specifications or shapes of products need to be produced, the lower mold can be easily disassembled and replaced.

[0011] Further, heating plates are fixedly arranged in the upper mounting table and the lower mounting table.

[0012] Through the above scheme, the epoxy resin will accelerate the curing process under the condition of heating. By arranging heating plates in the upper mounting table and the lower mounting table, it can ensure that the resin in the mold is uniformly heated during the forming process, thereby accelerating the curing speed and improving the production efficiency.

[0013] Further, a control console is fixedly connected to one side of the base.

[0014] Through the above scheme, the console allows the operator to set various parameters according to the molding requirements, such as heating temperature, vacuum time, lifting speed of the hydraulic rod, etc.

[0015] Further, the four limiting columns are all slidingly arranged inside the positioning holes.

[0016] Through the above scheme, the sliding of the limiting column in the positioning hole ensures the stable movement of the moving plate in the vertical direction. When the hydraulic rod drives the moving plate to move up and down, the limiting column slides along the track of the positioning hole, preventing the moving plate from deviating or tilting.

[0017] Further, the upper ends of the plurality of connecting channels are connected with the air extraction channel, the bottom ends of the plurality of connecting channels are all connected with the air extraction holes, and the end of the connecting pipe away from the vacuum pump is fixedly connected with the air extraction pipe.

[0018] Through the above scheme, when the vacuum pump is started, it will generate suction, which will extract the air inside the upper mold through the connecting pipe and the air extraction pipe. The air first enters the connecting channel through the air extraction hole, then rises along the connecting channel to the air extraction channel, and finally is extracted by the vacuum pump.

[0019] Further, the upper mold corresponds to the lower mold.

[0020] Through the above scheme, the correspondence between the upper mold and the lower mold ensures that the mold can be completely closed when the mold is closed, forming a cavity.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The carbon fiber and epoxy resin interface molding device comprises an upper mold, a lower mold, a plurality of limiting columns, a plurality of positioning holes, a plurality of connecting channels, an air extraction channel, a plurality of air extraction holes, a vacuum pump, and a connecting pipe. The upper mold and the lower mold are arranged in a corresponding manner, the four limiting columns are all slidingly arranged inside the positioning holes, the air extraction channel is arranged inside the upper mold, the plurality of connecting channels are fixedly connected with the air extraction channel, the bottom ends of the plurality of connecting channels are all connected with the air extraction holes, the end of the connecting pipe away from the vacuum pump is fixedly connected with the air extraction pipe, and the vacuum pump is connected with the air extraction pipe through the connecting pipe. The carbon fiber and epoxy resin interface molding device has the following beneficial effects: the sliding of the limiting column in the positioning hole ensures the stable movement of the moving plate in the vertical direction; when the hydraulic rod drives the moving plate to move up and down, the limiting column slides along the track of the positioning hole, preventing the moving plate from deviating or tilting; when the vacuum pump is started, it will generate suction, which will extract the air inside the upper mold through the connecting pipe and the air extraction pipe; the air first enters the connecting channel through the air extraction hole, then rises along the connecting channel to the air extraction channel, and finally is extracted by the vacuum pump; the upper mold corresponds to the lower mold, ensuring that the mold can be completely closed when the mold is closed, forming a cavity; and the carbon fiber and epoxy resin interface molding device has the following beneficial effects: the carbon fiber and epoxy resin interface molding device constitutes an exhaust system through the air extraction channel, the connecting channel, and the air extraction hole, as well as the vacuum pump and the connecting pipe, which can exhaust the air and bubbles in the mold and form a negative pressure to exhaust the bubbles in the resin, ensuring that the resin can fully soak the carbon fiber, improving the interface bonding quality and overall performance of the composite material; the air extraction channel is arranged inside the upper mold for collecting and guiding the air in the mold; the connecting channel serves as a bridge to connect the air extraction channel with each air extraction hole, ensuring that the air can be smoothly exhausted; the vacuum pump is connected with the air extraction pipe through the connecting pipe, and the air extraction pipe is communicated with the air extraction channel of the upper mold; when the vacuum pump is started, it will generate a negative pressure inside the mold, driving the air and bubbles to pass through the air extraction hole, the connecting channel, and the air extraction channel, and finally be extracted out of the mold through the connecting pipe; the negative pressure effect helps the resin to better soak the carbon fiber, ensuring that each fiber is fully wrapped by the resin, avoiding their retention and defect formation in the resin, which helps to improve the interface bonding quality of the composite material and enhance the overall mechanical properties of the material. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1The schematic diagram of the overall structure of the structure of the present application;

[0024] Figure 2 The schematic diagram of the pressing device structure of the structure of the present application;

[0025] Figure 3 The sectional view of the upper die of the structure of the present application;

[0026] Figure 4 The sectional view of the heating device of the structure of the present application;

[0027] Figure 5 The schematic diagram of the limiting structure of the structure of the present application.

[0028] In the figure:

[0029] 1, base; 2, limiting column; 3, top plate; 4, hydraulic rod; 5, moving plate; 6, upper mounting table; 7, upper die; 8, air extraction pipe; 9, air extraction channel; 10, connecting channel; 11, air extraction hole; 12, vacuum pump; 13, connecting pipe; 14, positioning hole; 15, lower mounting table; 16, lower die; 17, heating plate; 18, control table. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3The carbon fiber and epoxy resin interface forming device in the embodiment comprises a base 1, four limiting columns 2 in a rectangular array are fixedly connected to the upper end of the base 1, a top plate 3 is fixedly connected to the upper end of the four limiting columns 2, a hydraulic rod 4 is fixedly connected to the inside of the top plate 3, a moving plate 5 is fixedly connected to the extension end of the hydraulic rod 4, an upper mounting table 6 is fixedly connected to the bottom end of the moving plate 5 through bolts, an upper mold 7 is fixedly connected to the bottom end of the upper mounting table 6 through bolts, an air exhaust pipe 8 is fixedly connected to one side of the upper mold 7, an air exhaust passage 9 is arranged in the inside of the upper mold 7, the air exhaust passage 9 is arranged in the inside of the upper mold 7 and is used for collecting and guiding the air in the mold, a plurality of connecting passages 10 in a straight line array are arranged in the inside of the upper mold 7, a plurality of air exhaust holes 11 in a straight line array are arranged in the inside of the upper mold 7, the connecting passage 10 serves as a bridge and connects the air exhaust passage 9 and each air exhaust hole 11, so as to ensure that the air can be smoothly discharged, a vacuum pump 12 is fixedly connected to one side of the upper end of the moving plate 5, a connecting pipe 13 is fixedly connected to the air inlet end of the vacuum pump 12, the vacuum pump 12 is connected with the air exhaust pipe 8 through the connecting pipe 13, and the air exhaust pipe 8 is communicated with the air exhaust passage 9 of the upper mold 7.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 4 , a plurality of positioning holes 14 in a layer rectangular array are arranged in the inside of the moving plate 5, the design of the positioning holes 14 enables the limiting columns 2 to accurately pass through and fix the moving plate 5, so as to ensure that the moving plate 5 and the upper mold 7 thereon can keep stable movement in the forming process, which helps to avoid the dislocation of the mold and ensure the consistency of product precision, the base 1 is fixedly connected with an upper mounting table 15, the upper mounting table 15 is fixedly connected with a lower mold 16 through bolts, the upper mounting table 15 serves as a support structure of the lower mold 16 and is fixedly connected with the base 1 through bolts, so as to ensure the stability of the entire forming device and prevent the displacement or deformation of the mold in the forming process, the lower mold 16 is connected with the upper mounting table 15 through bolts, this design makes the replacement and maintenance of the mold more convenient, when different specifications or shapes of products need to be produced, the lower mold 16 can be easily disassembled and replaced, heating plates 17 are fixedly arranged in the inside of the upper mounting table 6 and the lower mounting table 15, the epoxy resin will accelerate the curing process under the heating condition, the arrangement of the heating plates 17 in the inside of the upper mounting table 6 and the lower mounting table 15 can ensure that the resin in the mold is uniformly heated in the forming process, so as to accelerate the curing speed and improve the production efficiency, one side of the base 1 is fixedly connected with a control console 18, the control console 18 allows the operator to set various parameters according to the forming requirements, such as heating temperature, vacuum time, lifting speed of the hydraulic rod 4, etc.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 5The four limiting columns 2 are all slidingly arranged inside the positioning holes 14, and the sliding of the limiting columns 2 in the positioning holes 14 ensures the stable movement of the moving plate 5 in the vertical direction. When the hydraulic rod 4 drives the moving plate 5 to move up and down, the limiting columns 2 slide along the track of the positioning holes 14, preventing the moving plate 5 from deviating or tilting. The multiple connecting channels 10 are fixedly connected with the air extraction channel 9 at the upper end, and the bottom end of the multiple connecting channels 10 is connected with the air extraction holes 11. The connecting pipe 13 is fixedly connected with the air extraction pipe 8 at the end away from the vacuum pump 12. When the vacuum pump 12 is started, it will generate suction, which will extract the air inside the upper die 7 through the connecting pipe 13 and the air extraction pipe 8. The air first enters the connecting channel 10 through the air extraction hole 11, then rises along the connecting channel 10 to the air extraction channel 9, and is finally extracted by the vacuum pump 12. The upper die 7 corresponds to the lower die 16, and the correspondence between the upper die 7 and the lower die 16 ensures that the mold can be completely closed when the mold is closed, forming a cavity.

[0034] In the embodiment, the carbon fiber and epoxy resin interface forming device is provided with the air extraction channel 9, the connecting channel 10, the air extraction hole 11, the vacuum pump 12 and the connecting pipe 13, which constitute an exhaust system. The exhaust system can exhaust the air and bubbles in the mold and form a negative pressure to exhaust the bubbles in the resin, so as to ensure that the resin can fully soak the carbon fiber, improve the interface bonding quality of the composite material, and improve the overall performance of the material. The air extraction channel 9 is arranged inside the upper die 7 and is used for collecting and guiding the air in the mold. The connecting channel 10 connects the air extraction channel 9 and the air extraction holes 11, so as to ensure that the air can be smoothly exhausted. The vacuum pump 12 is connected with the air extraction pipe 8 through the connecting pipe 13, and the air extraction pipe 8 is communicated with the air extraction channel 9 of the upper die 7. When the vacuum pump 12 is started, it will generate a negative pressure in the mold, drive the air and bubbles to pass through the air extraction hole 11, the connecting channel 10 and the air extraction channel 9, and finally be extracted out of the mold through the connecting pipe 13. The negative pressure helps the resin to better soak the carbon fiber, ensures that each fiber is fully wrapped by the resin, avoids the fibers to stay in the resin and form defects, which helps to improve the interface bonding quality of the composite material and enhance the overall mechanical properties of the material.

[0035] The working principle of the above embodiment is as follows:

[0036] The operator first sets the required parameters for molding through the console 18, and ensures that the upper die 7 and the lower die 16 have been correctly installed, starts the heating plates 17 inside the upper mounting table 6 and the lower mounting table 15 to preheat the mold, places the carbon fiber pre-impregnated material inside the lower die 16, the hydraulic rod 4 starts to work to drive the moving plate 5 and the upper die 7 thereon to move downward until completely closed with the lower die 16 to form a closed cavity, the vacuum pump 12 is started, which is connected with the air exhaust channel 9 of the upper die 7 through the connecting pipe 13 and the air exhaust pipe 8, the vacuum pump 12 generates negative pressure inside the mold, the air and bubbles inside the mold enter the connecting channel 10 through the air exhaust hole 11, then rise along the connecting channel 10 to the air exhaust channel 9, and finally are exhausted out of the mold through the connecting pipe 13, the vacuum extraction process continues until the air and bubbles inside the mold are sufficiently exhausted to form a negative pressure environment, which helps the resin to better infiltrate the carbon fiber, at the same time or after the vacuum extraction, the heating plates 17 continue to work to heat the mold to accelerate the curing process of the resin, the resin gradually cures under the action of heating and negative pressure to form a composite product tightly combined with the carbon fiber, when the resin is completely cured, the hydraulic rod 4 is retracted to drive the moving plate 5 and the upper die 7 thereon to move upward and separate from the lower die 16, the cured composite product is taken out, and necessary subsequent processing such as trimming, cleaning and inspection is performed on the taken-out product.

[0037] It is to be noted that the relative terms such as first and second etc. are used herein merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus including a list of elements does not only include those elements, but also other elements not explicitly listed, or other elements inherent to such process, method, article or apparatus. Without more limitations, the element defined by the phrase "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0038] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber and epoxy resin interfacial molding apparatus comprising a base (1), characterized in that: The base (1) upper end is fixedly connected with four rectangular array arranged limiting columns (2), four limiting columns (2) upper end is fixedly connected with the top plate (3), the top plate (3) is fixedly connected with the hydraulic rod (4) inside, the hydraulic rod (4) telescopic end is fixedly connected with the moving plate (5), the moving plate (5) bottom is fixedly connected with the upper mounting table (6) through bolt, the upper mounting table (6) bottom is fixedly connected with the upper die (7) through bolt, the upper die (7) one side is fixedly connected with the exhaust pipe (8), the upper die (7) is internally provided with the exhaust passage (9), the upper die (7) is internally provided with multiple linear array arranged connecting channels (10), the upper die (7) is internally provided with multiple linear array arranged exhaust holes (11), the moving plate (5) upper end one side is fixedly connected with the vacuum pump (12), the vacuum pump (12) gas inlet end is fixedly connected with the connecting pipe (13).

2. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: The moving plate (5) is internally provided with multiple layer rectangular array arranged positioning holes (14).

3. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: The base (1) upper end is fixedly connected with the lower mounting table (15), and the lower mounting table (15) upper end is fixedly connected with the lower die (16) through bolt.

4. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: The upper mounting table (6) and the lower mounting table (15) are fixedly provided with heating plates (17) inside.

5. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: The base (1) one side is fixedly connected with the control table (18).

6. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: Four limiting columns (2) are all arranged in the positioning hole (14) inside.

7. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: Multiple connecting channels (10) fixed upper end are connected with the exhaust passage (9), and the bottom of multiple connecting channels (10) is connected with the exhaust hole (11), and the connecting pipe (13) is fixedly connected with the exhaust pipe (8) away from the vacuum pump (12).

8. The carbon fiber and epoxy interface molding apparatus of claim 1, wherein: The upper die (7) corresponds with the lower die (16).

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