CN216804485U - Production equipment and system for fiber-mixed three-dimensional braided composite pipe - Google Patents

Abstract

The utility model relates to a production device and a system for fiber-mixed three-dimensional braided composite pipes, wherein the device comprises a core mould, a robot, a braiding machine, a glue injection mechanism and a heating mechanism; the robot is used for clamping the core mold; the robot is used for feeding the core mould into the braiding machine, and the braiding machine is used for integrally braiding fibers on the core mould; the glue injection mechanism is used for injecting resin into the fibers of the woven core mold; and the heating mechanism is used for heating the fibers on the core mold after glue injection so as to cure and form the fibers and the resin on the core mold. The utility model adopts an integral weaving forming process, the fibers are staggered according to angles in a three-dimensional space, are integrally continuous, have no seam or fracture, are not provided with cutting cuts, and have consistent orientation in all directions in the plane and out of the plane, thereby effectively eliminating the layering phenomenon of the composite material.

Description

Production equipment and system for fiber-mixed three-dimensional braided composite pipe

Technical Field

The utility model relates to the fields of three-dimensional weaving technology and composite material forming technology, in particular to production equipment and a system for a fiber mixed three-dimensional weaving composite material pipe.

Background

In recent years, the carbon fiber market is rapidly developed and widely applied to the fields of automobiles, aerospace, buildings and the like. The composite material market in China is developed quite rapidly, the product output is expanded continuously, the national industry policy encourages the composite material industry to develop towards high-technology products, and the investment of newly-increased investment projects of domestic enterprises is increased gradually. The composite pipe market is receiving increasing attention from investors, which has led to an increasing interest from all parties. The carbon fiber tube is one of carbon fiber basic products with wide application range and large quantity at present, and is also one of important application forms of the carbon fiber composite material. Similar to other applications, carbon fiber tubes are also lightweight materials favored in many fields due to their "lightweight and strong" performance advantages.

The market price of the current carbon fiber pipe material has been restricted to a certain extent, but with the continuous promotion of the technological level and the popularization of the mass production mode, the bottleneck is broken gradually. From the depth and trend of market demands, the development of the carbon fiber tube is developed towards the direction of function specialization and design combination. In conclusion, the product foundation determines the market demand, and the future development of carbon fiber pipes is not a little different and must play an increasingly important role in the process of light weight replacement of metal pipes.

In the process of implementing the utility model, the inventor finds that the following problems exist in the prior art:

the existing fiber reinforced composite material pipe is generally prepared by adopting a short fiber reinforced matrix or adopting long fibers and two-dimensional fabric prepreg through a layering process to obtain a composite material part. Finally, the fiber is cut and paved, the fiber has fracture, the interlaminar performance is poor, particularly, the delamination is easy to generate during axial compression, and the interlaminar shear strength is low.

SUMMERY OF THE UTILITY MODEL

Therefore, the production equipment and the system for the fiber-mixed three-dimensional braided composite material pipe are needed to be provided, and the technical problems that fibers in the prior art are required to be cut, paved and attached, have fractures, have poor interlayer performance, and are easy to delaminate particularly during axial compression, and the interlayer shear strength is low are solved.

To achieve the above object, the inventors provide a production apparatus for a fiber hybrid three-dimensional braided composite material pipe, comprising:

a core mold;

a robot for gripping the core mold;

a knitting machine into which the robot feeds the core mold, the knitting machine integrally knitting fibers on the core mold;

the glue injection mechanism is used for injecting resin into the fibers of the woven core mold; and

and the heating mechanism is used for heating the fibers on the core mold after glue injection so as to cure and mold the fibers and the resin on the core mold.

Different from the prior art, the technical scheme of the application is that a robot is used for clamping the core mold, the robot is used for feeding the core mold into the knitting machine, and the knitting machine is used for integrally knitting fibers on the core mold; the glue injection mechanism is used for injecting resin into the fibers of the woven core mold; the heating mechanism is used for heating the fibers on the core mold after glue injection so as to cure and mold the fibers and the resin on the core mold. Therefore, the integrated weaving forming process is adopted, the fibers are staggered in three-dimensional space according to angles, are integrally continuous, have no seams or fractures, the three-dimensional weaving fiber reinforced composite material has a completely integral reinforcing system, the fibers do not have cutting cuts, and the fibers are consistent in orientation in all directions in the plane and out of the plane, so that the layering phenomenon of the composite material can be effectively eliminated, the interlaminar performance of the composite material can be greatly improved, and the problem of low pain points of interlaminar shear strength in the traditional process is solved.

In one embodiment of the present invention, the head of the core mold is provided with a first step, and the knitting machine is configured to fix the head of the fiber to the first step. In this way, the first step is provided at the head of the core mold, so that the head of the fiber can be fixed, or the head of the fiber can be fixed to the first step by a band.

In one embodiment of the present invention, the tail portion of the core mold is provided with a second step, and the knitting machine is configured to fix the tail portion of the fiber to the second step. Therefore, the second step is arranged at the tail part of the core mold, the tail part of the fiber can be fixed, and the tail part of the fiber can be fixed on the second step through a binding belt.

As an embodiment of the present invention, the production equipment of the fiber-hybrid three-dimensional braided composite pipe material further includes a mold release agent application mechanism for applying a mold release agent to the core mold. Therefore, the release agent coating mechanism can be used for coating the release agent on the core mold, so that subsequent degumming is facilitated.

As an embodiment of the present invention, the production equipment of the fiber hybrid three-dimensional braided composite pipe further includes a sticking film equipment for sticking a polytetrafluoroethylene film on the core mold. So, paste the polytetrafluoroethylene membrane on the mandrel through mucosa equipment, can be better demold through the polytetrafluoroethylene membrane, in the actual production process, the fibre sets up on the mandrel through the polytetrafluoroethylene membrane, the in-process of drawing of patterns, as long as take off the fibre from the polytetrafluoroethylene membrane can, stay the polytetrafluoroethylene membrane on the mandrel, convenient reuse next time, because the performance of polytetrafluoroethylene membrane, can be better demold, improve the efficiency of drawing of patterns.

In one embodiment of the present invention, the outer diameter of the mandrel is adapted to the inner diameter of the three-dimensional braided composite material pipe, and the cross-sectional shape of the mandrel is circular, rectangular, polygonal, or any one or combination of more of them. Therefore, the outer diameter of the core mould is matched with the inner diameter of the three-dimensional braided composite material pipe, the cross section of the chromium-plated metal rod is circular, rectangular or polygonal, various pipes in different shapes can be manufactured, and the pipe is convenient to use.

In one embodiment of the present invention, the extended shape of the core mold is a straight cylindrical shape or a curved shape. Therefore, the extension shape of the core mould is a straight cylinder shape or a curve shape, so that an arc-shaped pipe can be manufactured, and the pipe is convenient to use.

As an embodiment of the utility model, the production equipment for the fiber-mixed three-dimensional braided composite material pipe further comprises a tractor, and the tractor is used for driving the fibers on the core mold to move forwards. So, be used for driving the fibre on the mandrel through the tractor and move forward, conveniently process longer body.

In one embodiment of the present invention, the heating means is provided inside the core mold. Therefore, the heating mechanism is arranged inside the core mold, so that the external space can be effectively saved.

To achieve the above object, the inventors also provide a system of fiber hybrid three-dimensional braided composite tubing, comprising a production apparatus of fiber hybrid three-dimensional braided composite tubing as described in any one of the above inventors.

Different from the prior art, the system for weaving the composite pipe in three dimensions by mixing the fibers adopts an integrated weaving forming process, the fibers are staggered in three dimensions according to angles, are integrally continuous, have no seams or fractures, the fiber reinforced composite material woven in three dimensions has a complete integral reinforcing system, the fibers do not have cutting cuts, and the fibers are oriented in all directions in the plane and out of the plane in a consistent manner, so that the layering phenomenon of the composite material can be effectively eliminated, the interlaminar performance of the composite material can be greatly improved, and the problem of pain points of low interlaminar shear strength in the traditional process is solved.

The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, further, the present invention can be implemented according to the contents described in the text and the drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description will be made in conjunction with the detailed description of the present application and the drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the application.

In the drawings of the specification:

FIG. 1 is a system diagram of a production facility for fiber hybrid three-dimensional braided composite tubing according to one embodiment of the present application;

FIG. 2 is a perspective view of a fiber hybrid three-dimensional braided composite tubing according to one embodiment of the present application;

FIG. 3 is a schematic illustration of the preparation of a fiber hybrid three-dimensional braided composite tubing according to one embodiment of the present application;

FIG. 4 is a schematic structural view of a fiber hybrid three-dimensional braided composite tubing according to one embodiment of the present application;

fig. 5 is a schematic view of a weaving process of the fiber hybrid three-dimensional woven composite tube according to an embodiment of the present application.

The reference numerals referred to in the above figures are explained below:

1. a core mold is provided,

2. a polytetrafluoroethylene film, wherein the polytetrafluoroethylene film is a polytetrafluoroethylene film,

3. a three-dimensional braided composite material is provided,

4. the robot is provided with a robot arm which is provided with a plurality of robots,

5. a knitting machine is adopted to knit the fabric,

6. the glue injection mechanism is provided with a glue injection mechanism,

7. a heating mechanism is arranged on the base plate,

8. a release agent coating mechanism is arranged on the upper surface of the mould,

9. a mucosal device.

Detailed Description

In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".

In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.

As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.

The inventor finds that the existing fiber reinforced composite material pipe is generally obtained by adopting a short fiber reinforced matrix or adopting long fibers and two-dimensional fabric prepreg through a layering process to obtain a composite material part. Finally, the fiber is cut and paved, the fiber has fracture, the interlaminar performance is poor, particularly, the delamination is easy to generate during axial compression, and the interlaminar shear strength is low.

Therefore, the embodiment of the present application provides a technical solution, please refer to fig. 1 to 5, and the embodiment relates to a production apparatus for a fiber hybrid three-dimensional braided composite pipe, which includes a core mold 1, a robot 4, a braiding machine 5, a glue injection mechanism 6 and a heating mechanism 7; the robot 4 is used for clamping the core mold 1; the robot 4 is used for sending the core mould 1 into the braiding machine 5, and the braiding machine 5 is used for integrally braiding fibers on the core mould 1; the glue injection mechanism 6 is used for injecting resin into the fibers of the woven core mold 1; the heating mechanism 7 is used for heating the fibers on the core mold 1 after glue injection to cure and mold the fibers and the resin on the core mold 1.

In this embodiment, the robot 4 is provided with a slide table, and the robot 4 can drive the core mold 1 to move forward and backward through the slide table. In this embodiment, the principles of the robot 4, the knitting machine 5, the glue injection mechanism 6, and the heating mechanism 7 are conventional technical means, and the specific structures will not be described in detail.

In this embodiment, the robot 4 is used to hold the core mold 1, the robot 4 is used to feed the core mold 1 into the knitting machine 5, and the knitting machine 5 is used to integrally knit the fibers on the core mold 1; the glue injection mechanism 6 is used for injecting resin into the fibers of the woven core mold 1; the heating mechanism 7 is used for heating the fibers on the core mold 1 after glue injection to cure and mold the fibers and the resin on the core mold 1. Therefore, the integrated weaving forming process is adopted, the fibers are staggered in three-dimensional space according to angles, are integrally continuous, have no seams or fractures, the three-dimensional weaving fiber reinforced composite material has a completely integral reinforcing system, the fibers do not have cutting cuts, and the fibers are consistent in orientation in all directions in the plane and out of the plane, so that the layering phenomenon of the composite material can be effectively eliminated, the interlaminar performance of the composite material can be greatly improved, and the problem of low pain points of interlaminar shear strength in the traditional process is solved.

In some embodiments, the head of the core mold 1 is provided with a first step (not shown in the drawings), and a braiding machine 5 is used to fix the head of the fiber on the first step. In this way, the first step is provided at the head of the core mold 1, so that the head of the fiber can be fixed, or the head of the fiber can be fixed to the first step by a band.

In some embodiments the tail of the mandrel 1 is provided with a second step (not shown) and a braiding machine 5 is used to secure the tail of the fibre to the second step. Thus, the second step is provided at the tail of the core mold 1, so that the fiber tail can be fixed, or the fiber tail can be fixed to the second step by a binding tape.

In some embodiments, the apparatus for producing the fiber-hybrid three-dimensional braided composite tube further comprises a release agent applying mechanism 8, and the release agent applying mechanism 8 is used for applying a release agent to the core mold 1. Therefore, the release agent coating mechanism 8 can be used for coating the release agent on the core mold 1, so that subsequent degumming is facilitated.

In some embodiments, the production equipment of the fiber-mixed three-dimensional braided composite material pipe further comprises a sticking film device 9, and the sticking film device 9 is used for sticking the polytetrafluoroethylene film 2 on the core mold 1. So, paste polytetrafluoroethylene membrane 2 on mandrel 1 through mucosa equipment 9, can be better through polytetrafluoroethylene membrane 2 the drawing of patterns that carries on, in the actual production process, the fibre sets up on mandrel 1 through polytetrafluoroethylene membrane 2, the in-process of drawing of patterns, as long as take off the fibre from polytetrafluoroethylene membrane 2 can, stay polytetrafluoroethylene membrane 2 on mandrel 1, make things convenient for reuse next time, because polytetrafluoroethylene membrane 2's performance, can be better draw of patterns, improve the efficiency of drawing of patterns.

In this embodiment, the release agent applying mechanism 8 and the sticking film device 9 also adopt conventional technical means, and the specific structure is not described herein.

In some embodiments, the outer diameter of the mandrel 1 is adapted to the inner diameter of the three-dimensional braided composite tube. The cross-sectional shape of the core mold 1 is circular, rectangular, polygonal, any one or a combination of plural kinds thereof. Therefore, the outer diameter of the core die 1 is matched with the inner diameter of the three-dimensional woven composite pipe, the cross section of the core die 1 is circular, rectangular or polygonal, various pipes in different shapes can be manufactured, and the pipes are convenient to use.

In some embodiments, the extended shape of the core mold 1 is a straight cylinder shape or a curved shape. Therefore, the extension shape of the core mould 1 is a straight cylinder shape or a curve shape, so that an arc-shaped pipe can be manufactured, and the pipe is convenient to use.

In some embodiments, the production equipment for the fiber-mixed three-dimensional braided composite material pipe further comprises a tractor, and the tractor is used for driving the fibers on the core mold 1 to move forwards. So, be used for driving the fibre on the mandrel 1 through the tractor and move forward, conveniently process longer body. The tractor is the conventional technical means, and the specific structure is not described in detail.

In some embodiments, the heating mechanism 7 is provided inside the core mold 1. Thus, the heating means 7 is provided inside the core mold 1, and the space outside can be effectively saved. The heating mechanism 7 may be an external oven, and the core mold 1 is transported into the oven by the robot 4. In some embodiments, the heating mechanism 7 may be disposed inside the core mold 1 to directly heat the core mold 1, and the fiber and resin on the core mold 1 may be cured and molded.

In this embodiment, the preparation method of the fiber-mixed three-dimensional braided composite pipe includes the following steps: step one, manufacturing a core mould 1

Processing a metal raw material to manufacture a core die 1, and coating a release agent on the core die 1 for later use;

in some embodiments, in the step of manufacturing the core mold 1, a release agent is applied to a metal raw material to be treated as the core mold 1, a polytetrafluoroethylene film 2 with a back adhesive is attached on a surface of the core mold 1, the release agent is applied again, and then three-dimensional weaving is performed.

In this embodiment, the polytetrafluoroethylene membrane 2 is a microporous membrane made of Polytetrafluoroethylene (PTFE) by calendering, extrusion, biaxial stretching, or the like. The polytetrafluoroethylene membrane 2 has a fibrous microporous structure with a porosity of greater than eighty percent, 14 hundred million micropores per square centimeter, and a pore size in the range of 0.02 μm to 15 μm. Because the fabric substrate of the polytetrafluoroethylene film material is glass fiber, the diameter range of the fiber is 3.30-4.05 μm, the weight of the fiber is more than 150g/m, the coating is mainly made of polytetrafluoroethylene resin, the content of the polytetrafluoroethylene resin is not less than ninety percent, the mass of the coating is almost more than 400g/m, and the thickness of the film is more than 0.5 mm.

In some embodiments, the release agent is applied again more than 2 times, each at 20min intervals. In this way, by coating the release agent more than 2 times and forming more than 2 layers of release agent at intervals of 20min, better release can be performed, and the release efficiency can be further improved.

In some embodiments, the metal raw material is a chrome-plated metal bar, the outer diameter of the chrome-plated metal bar is matched with the inner diameter of the three-dimensional braided composite material 3 pipe, and the cross-sectional shape of the chrome-plated metal bar is circular, rectangular or polygonal, any one or combination of more of the shapes. Therefore, the metal raw material is the chrome-plated metal rod, the outer diameter of the chrome-plated metal rod is matched with the inner diameter of the three-dimensional braided composite material 3 pipe, the cross section of the chrome-plated metal rod is circular, rectangular or polygonal, various shapes of pipes can be manufactured, and the pipe is convenient to use.

In some embodiments, the extended shape of the chrome-plated metal bar is a straight cylinder or a curved shape. Therefore, the extending shape of the chromium-plated metal rod is a straight cylinder shape or a curve shape, so that an arc-shaped pipe can be manufactured, and the pipe is convenient to use.

Specifically, in this embodiment, the diameter of the core mold 1 is the same as the inner diameter of the pipe after molding. The release agent used was 832 semi-permanent release agent available from Kyoto Class technologies, Inc. The application times are 3 times, and the application is carried out for the first time at intervals of 20 min.

Step two, three-dimensional knitting

Clamping the treated core mold 1 by using a robot, arranging the core mold 1 on a knitting machine, fixing the knitted head fibers by using the knitting machine, continuously feeding the robot into the core mold 1, continuously knitting the fibers on the core mold 1 at one time by using the knitting machine, controlling the moving speed of the robot and the knitting speed of the knitting machine, and fixing the knitted tail fibers by using the knitting machine after the knitting is finished to obtain a preform;

in this embodiment, three-dimensional knitting is a key step, and yarns are divided into two systems of knitting yarns and axial yarns. The knitting yarn is hung on the machine chassis and can move on the yarn carrier, and the axial yarn is directly hung on the machine chassis. In the knitting process, each yarn carrying device moves on a machine chassis along different directions according to a certain rule, so that knitting yarns are driven to move, but axial yarns are not moved. Therefore, the knitting yarns are mutually interwoven and crossed together in a three-dimensional space, and the axial yarns are surrounded at the same time to form a non-layered integral structure. The woven structure with human axial yarns is called a three-dimensional five-way structure, and the structure without axial yarns is called a three-dimensional four-way structure. During the weaving process, a preform is formed due to the interlacing and crossing of the yarns.

In this embodiment, the knitting system is provided with a spindle base, a fiber shaft yarn laying creel, a robot sliding table system, a clamping system, a knitting machine system and other devices. The pre-formed fiber weaving angle, the weaving tightness and the weaving thickness of the weaving piece can be controlled by adjusting the fiber quantity of the weaving machine and the speed of the robot sliding table and the weaving machine.

In some embodiments, in the three-dimensional weaving step, the fibers are carbon fiber yarns and/or glass fiber yarns. So, can mix through carbon fiber yarn and glass fiber yarn, make the 3 tubular products of fibre mixed three-dimensional composite material of weaving, can make full use of carbon fiber yarn or glass fiber yarn's characteristics, select carbon fiber yarn or glass fiber yarn according to actual need.

In some embodiments, in the three-dimensional weaving step, the robot moves at a speed of 2mm/s, the braiding machine has a speed of 6mm/s, the braiding angle is 60 °, and the fiber braiding thickness is 1.5 mm. Therefore, the knitting angle and the knitting thickness can be adjusted by controlling the moving speed of the robot and the speed of the knitting machine, and the three-dimensional knitted composite material 3 pipe with different performances and different thicknesses can be conveniently produced.

Step three, curing treatment

And (3) introducing the prefabricated body into the prepared epoxy resin through a vacuum auxiliary forming process, placing the epoxy resin into an oven for forming and curing, and demolding after curing and forming to obtain the three-dimensional braided composite material 3 pipe with the fiber hybrid structure.

In the embodiment, high-strength or high-toughness epoxy resin can be selected as the epoxy resin to obtain the composite material pipes with different performance requirements.

In this embodiment, the core mold is formed by a VARI process, sealing tapes are attached to both ends of the woven core mold 1, a vacuum forming auxiliary material is laid, and vacuum infusion forming is performed, wherein the resin used is epoxy resin. The VARI process is vacuum assisted molding for short, is a novel composite material molding technology with low cost and high performance, and receives wide attention in the field of aviation in recent years. The VARI technique is a molding method in which the fibers and the fabric thereof are impregnated by resin flowing and permeating under vacuum and cured under vacuum.

In the demoulding step, excess fiber and resin on the step of the core mould 1 are cut off, the core mould 1 is stuck with the polytetrafluoroethylene film 2, demoulding is relatively easy,

in some embodiments, in the step of curing, the temperature is raised to 50 ℃, the temperature is maintained for one hour, then the temperature is raised to 100 ℃, the temperature is maintained for one hour, after the temperature is maintained, the oven is cooled to room temperature, and then the product is taken out and subjected to demolding treatment. Therefore, the curing treatment effect can be improved, and scalding is prevented.

Specifically, in this example, the yarn: the carbon fiber adopts Zhongshenying hawk grade T700, 12K; the glass fiber is Mount Taishan glass fiber, 1200tex, alkali-free E glass fiber. Knitting machine: the total number of the fiber spindles is 144, the number of the carbon fibers is 24, the number of the glass fibers is 120, and the ratio of the carbon fiber to the glass fiber spindles is 1: 5. core mold 1: the diameter of the molding region is 25mm, the length thereof is 500mm, the diameter of the 100mm position of the two ends of the core mold 1 is 16mm, and a step is formed with the molding region.

The braiding machine speed was 6mm/s and the slip table speed was 2 mm/s. The thickness of a single layer of the knitted fabric is 1.5mm at a constant speed, the knitted fabric is formed by two layers, and the wall thickness is 3 mm. To obtain a product of 1: 5 a prefabricated body formed by mixing and weaving carbon fiber and glass fiber.

The obtained preform is subjected to vacuum introduction molding, and a Hui-Bai new material science and technology (Shanghai) company ML5417 epoxy resin system is adopted, the curing temperature is kept for 1 hour at 50 ℃, and the temperature is kept for two hours at 100 ℃.

Heating and curing according to a resin curing curve, cooling to room temperature after the curing, cutting off redundant resin and fibers rolled at two ends of the core mold 1, and demolding to obtain the carbon fiber glass fiber 1 with the inner diameter of 25mm and the outer diameter of about 31 mm: 5, the composite material pipe is formed by hybrid weaving.

In this embodiment, the system for three-dimensionally braiding a composite material pipe with fiber mixed includes a production apparatus for three-dimensionally braiding a composite material pipe with fiber mixed, and a control device, where the control device is used to control operation of a braiding machine, a tractor, a core mold 1 clamping mechanism, and a mechanism for supplying resin to a glue injection mechanism from outside, and the control device is a conventional control device, which will not be described herein again.

Different from the prior art, the system for weaving the composite pipe in three dimensions by mixing the fibers in the embodiment adopts an integral weaving forming process, the fibers are staggered in three dimensions according to angles, are integrally continuous, have no seam or fracture, and the fiber reinforced composite material woven in three dimensions has a complete integral reinforcing system, the fibers do not have cutting cuts any more, and the fibers are oriented in all directions in the plane and out of the plane uniformly, so that the layering phenomenon of the composite material can be effectively eliminated, the interlaminar performance of the composite material can be greatly improved, and the problem of pain points of low interlaminar shearing strength in the traditional process is solved.

It should be noted that, although the above embodiments have been described herein, the utility model is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed in the content of the present specification and the attached drawings, which are included in the scope of the present patent.

Claims (10)

1. A production facility of fibre mixes three-dimensional braided composite tubular product, its characterized in that includes:

a core mold;

a robot for gripping the core mold;

a braiding machine for feeding the core mold into the braiding machine, the braiding machine for integrally braiding fibers on the core mold;

the glue injection mechanism is used for injecting resin onto the fibers of the woven core mold; and

and the heating mechanism is used for heating the fibers on the core mold after glue injection so as to cure and mold the fibers and the resin on the core mold.

2. The apparatus for producing fiber hybrid three-dimensional braided composite tubing according to claim 1, wherein the head of the mandrel is provided with a first step, and the braiding machine is used to fix the head of the fiber on the first step.

3. The apparatus for producing fiber hybrid three-dimensional braided composite tubing according to claim 2, wherein the mandrel is provided with a second step at its tail, and the braiding machine is adapted to fix the tail of the fiber on the second step.

4. The apparatus for producing fiber-hybrid three-dimensional braided composite tubing of claim 1, further comprising a release agent application mechanism for applying a release agent to the mandrel.

5. The apparatus for producing fiber-hybrid three-dimensional braided composite tubing according to claim 4, further comprising a sticking film apparatus for sticking a polytetrafluoroethylene film on the core mold.

6. The production equipment of the fiber hybrid three-dimensional braided composite pipe material according to claim 1, wherein the outer diameter of the core mold is matched with the inner diameter of the three-dimensional braided composite pipe material, and the cross section of the core mold is in a shape of a circle, a rectangle or a polygon, or a combination of any one or more of the above shapes.

7. The apparatus for producing fiber hybrid three-dimensional braided composite tubing according to claim 6, wherein the mandrel has an extended shape of a straight cylinder or a curved shape.

8. The apparatus for producing the fiber-mixed three-dimensional braided composite material pipe according to claim 1, further comprising a tractor for driving the fibers on the core mold to move forward.

9. The apparatus for producing fiber-hybrid three-dimensional braided composite tubing according to claim 1, wherein the heating mechanism is disposed inside the mandrel.

10. A system of fiber hybrid three-dimensional braided composite tubing, comprising: production equipment of fiber hybrid three-dimensional braided composite tubing according to any one of claims 1 to 9.

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