Fiber composite pultrusion pipe production equipment

Abstract

The invention relates to the field of fiber composite material production equipment, and discloses fiber composite material pultrusion pipe production equipment which comprises a rack, a glue injection mechanism, a fiber guide-in mechanism, an infiltration forming mechanism, a traction mechanism and a cutting-off mechanism, and the fiber guide-in mechanism, the infiltration forming mechanism, the traction mechanism and the cutting-off mechanism are sequentially arranged on the rack. A pultrusion die hole is formed in the middle of the pultrusion die, one end of the core die is fixed to the rack, the other end of the core die is coaxially arranged in the pultrusion die hole, an infiltration groove is formed in the periphery of the core die, the fiber guiding-in mechanism is arranged at the feeding end of the infiltration forming mechanism, a glue injection hole communicated with the infiltration groove is formed in the pultrusion die, and the glue injection mechanism is connected with the glue injection hole. According to the pultrusion die, matrix resin can be injected into the pultrusion die hole, so that the matrix resin is infiltrated in a fiber material, the tubular fiber composite material is formed after curing, the fiber composite material pultrusion pipe is obtained after cutting, the distribution uniformity of the matrix resin can be guaranteed, and the quality of the fiber composite material pultrusion pipe is guaranteed.

Description

Technical Field

[0001] The present application relates to a fiber composite material production device, and in particular to a fiber composite material pultruded tube production device. Background Art

[0002] Fiber composite materials, also known as fiber reinforced plastics (FRP), refer to composite materials formed by reinforcing unsaturated polyester, epoxy resin and phenolic resin matrices with fiber materials such as glass fiber and carbon fiber. Fiber composite materials can be made into plates, rods, pipes or various profiles of specific shapes. They have the advantages of light weight, high hardness, stable performance, high mechanical strength, corrosion resistance, good designability, etc. They can replace steel to manufacture trusses, bridges and other load-bearing structures, machine parts and automobile and ship hulls, etc., and have been widely used in production and life.

[0003] Fiber composite pipes are mainly formed by winding or pultrusion. In the winding process, the reinforcing fiber material is first impregnated with matrix resin, and then wound on the forming mold to form a pipe structure; in the pultrusion process, the reinforcing fiber material is first introduced into the forming mold, and the matrix resin is injected into the forming mold. Through traction and pultrusion, the matrix resin is fully impregnated with the reinforcing fiber and forms a pipe structure. The pultrusion process has high production efficiency, and the quality of the composite pipe produced is stable. It can form a unidirectional arrangement of fibers along the longitudinal direction of the pipe, and the longitudinal elastic modulus and strength are very high. It is the preferred processing technology for making small and medium diameter composite pipes.

[0004] The matrix resin of the pultrusion process needs to infiltrate the reinforcing fibers in the molding die. How to ensure the uniform mixing of the matrix resin and the reinforcing fibers is the focus of process research. Existing fiber composite pipe production equipment mostly improves the uniformity of matrix resin distribution by setting multiple injection holes around the circumference of the molding die and injecting glue at the same time. However, this method still requires the matrix resin to flow over a long distance in the narrow mold cavity, and the amount of matrix resin injected through different injection holes is difficult to guarantee, making it difficult to effectively ensure the uniformity of matrix resin infiltration in the reinforcing fibers. Summary of the invention

[0005] In order to ensure the uniformity of matrix resin distribution and improve the product quality of fiber composite material pultruded tubes, the present application provides a fiber composite material pultruded tube production equipment.

[0006] The fiber composite material pultruded tube production equipment provided in this application adopts the following technical solutions: A fiber composite material pultruded tube production equipment, comprising a frame, a fiber introduction mechanism, a glue injection mechanism, an impregnation molding mechanism, a traction mechanism and a cutting mechanism, wherein the fiber introduction mechanism, the impregnation molding mechanism, the traction mechanism and the cutting mechanism are sequentially arranged on the frame, the impregnation molding mechanism comprises a pultrusion molding die and a core die, the pultrusion molding die is fixed on the frame, a pultrusion die hole is arranged on the pultrusion molding die, one end of the core die is fixed on the frame, and the other end extends into the pultrusion die hole, and is coaxially arranged with the pultrusion die hole, The fiber introduction mechanism can introduce fiber material into the pultrusion die hole outside the core mold, the outer periphery of the core mold is provided with an impregnation groove, and the pultrusion forming die is provided with a glue injection hole that penetrates the side wall of the pultrusion die hole at a position corresponding to the impregnation groove. The glue injection mechanism is connected to the pultrusion forming die at the glue injection hole so as to be able to inject matrix resin into the pultrusion die hole, so that the matrix resin is impregnated in the fiber material, and a tubular fiber composite material is formed after curing. The fiber composite material pultruded tube is obtained after being pulled by a traction mechanism and cut by a cutting mechanism.

[0007] By adopting the above technical scheme, the impregnation groove arranged on the outer periphery of the core mold is utilized, which is conducive to the rapid flow of the matrix resin in the impregnation groove under the impetus of the injection pressure, so that the matrix resin fills the impregnation groove and infiltrates into the reinforcing fiber bundles at different circumferential positions in the impregnation groove, thereby ensuring the uniformity of the distribution of the matrix resin in the fiber bundle; by utilizing the injection hole that passes through the side wall of the pultrusion die hole and is connected to the impregnation groove, the matrix resin can be continuously supplemented to the impregnation groove, thereby ensuring the filling amount and filling pressure of the matrix resin in the impregnation groove.

[0008] In a specific possible implementation manner, the wetting groove is arranged perpendicular to the axial direction of the core mold, and the wetting groove includes a feed side wall, a bottom wall and a discharge side wall which are sequentially connected to each other, the feed side wall is in a conical shape, the bottom wall is in a concave spherical band shape, the discharge side wall is in a convex parabolic shape, and the axial length of the discharge side wall is greater than the axial length of the feed side wall.

[0009] By adopting the above technical scheme, the conical feeding side wall with a shorter axial length of the impregnation groove is conducive to the smooth passage of the reinforcing fiber material through the impregnation groove, and can better limit the penetration of the matrix resin to the feeding side; the concave spherical band bottom wall in the impregnation groove can form a smooth transition between the bottom wall and the side wall of the impregnation groove, which is conducive to the flow and uniform distribution of the matrix resin in the impregnation groove; the convex parabolic discharge side wall with a longer axial length of the impregnation groove is conducive to the full infiltration of the matrix resin in the reinforcing fiber, and can better ensure the uniformity of the distribution of the matrix resin in the fiber bundle.

[0010] In a specific feasible implementation scheme, the core mold includes an installation and fixing portion and a tube hole forming portion, the installation and fixing portion is arranged at one end of the tube hole forming portion, the installation and fixing portion is square, the tube hole forming portion is cylindrical as a whole, and the infiltration groove is arranged on the tube hole forming portion; the infiltration and molding mechanism also includes a core mold mounting seat, the core mold mounting seat is provided with a core mold mounting hole, the installation and fixing portion is installed in the core mold mounting hole, and lateral position adjustment mechanisms are arranged on both sides of the core mold mounting hole in the lateral direction, and vertical position adjustment mechanisms are arranged on both sides in the vertical direction.

[0011] By adopting the above technical scheme, the installation fixing part is installed in the core mold installation hole, so that the tube hole forming part can be suspended in the pultrusion die hole, and the space in the pultrusion die hole around the tube hole forming part is used to form a forming cavity of the pultruded tube, and the reinforcing fibers and the matrix resin impregnated in the reinforcing fibers are pultruded to form a pultruded tube after the matrix resin is solidified; the lateral position adjustment mechanism arranged on the horizontal sides of the core mold installation hole and the vertical position adjustment mechanism on the vertical sides can be used to adjust the position and extension angle of the tube hole forming part in the pultrusion die hole, so as to ensure the thickness uniformity of the pultruded tube forming cavity at different positions and the wall thickness uniformity of the processed fiber composite material pultruded tube.

[0012] In a specific possible implementation scheme, the lateral position adjustment mechanism includes a lateral adjustment bolt, a lateral drive wheel and a lateral push screw, the lateral adjustment bolt is rotatably connected to the core mold mounting seat, the outer periphery of the lateral drive wheel is provided with helical teeth meshing with the lateral adjustment bolt, and the middle part is provided with a threaded hole adapted to the lateral push screw, the lateral drive wheel is rotatably provided on the core mold mounting seat, and the lateral push screw passes through the side wall of the core mold mounting hole and is slidably connected to the core mold mounting seat; The vertical position adjustment mechanism includes a vertical adjustment screw, a movable drive block and a wedge-shaped pad. The wall portion of the core mold mounting hole is provided with a wedge-shaped groove, and a wedge-shaped bar is provided at the corresponding position of the wedge-shaped pad. The wedge bar is located in the wedge-shaped groove, and a pad drive groove body is provided on the side of the wedge bar. A driving threaded hole is provided on the movable drive block, and the movable drive block is threadedly connected to the vertical adjustment screw through the driving threaded hole. A side driving bar is provided on the movable drive block, and the side driving bar is slidably provided in the pad drive groove body.

[0013] By adopting the above technical scheme, a lateral driving wheel that is meshed with the lateral adjusting bolt and threadedly connected to the lateral pushing screw can form a reduction transmission between the lateral adjusting bolt and the lateral pushing screw, and the pushing screw can be used to form a fine adjustment of the position of the installation and fixing part, which is beneficial to improving the adjustment accuracy of the position of the tube hole forming part; the vertical adjusting screw is used to drive the movable driving block to move laterally, and the wedge-shaped pad is pushed to support different positions in the wedge-shaped groove through the movable driving block, so that the height of the wedge-shaped pad can be finely adjusted, and the wedge-shaped pad can be used to form a greater vertical supporting force on the installation and fixing part, thereby ensuring the stability of the position of the tube hole forming part.

[0014] In a specific feasible implementation scheme, a plurality of lateral drive wheels and lateral push screws are provided, and the plurality of lateral drive wheels are arranged in one-to-one correspondence with the lateral push screws, and the plurality of lateral drive wheels are engaged with the lateral adjustment bolts; a core mold mounting cross bar is provided on the frame, and two core mold mounting seats are provided, and the two core mold mounting seats are fixed on opposite sides of the core mold mounting cross bar, and the core mold mounting holes are connected through the core mold mounting cross bar.

[0015] By adopting the above technical scheme, by utilizing the arrangement of multiple lateral driving wheels and lateral pushing screws, lateral thrust can be applied to multiple different positions of the mounting and fixing part at the same time, thereby improving the force uniformity and position stability of the mounting and fixing part during lateral position adjustment; by utilizing two core mold mounting seats fixed on the front and rear sides of the core mold mounting cross bar, the mounting and fixing part can be supported and adjusted over a longer length, thereby increasing the supporting torque of the core mold and the torque of the adjusting force when adjusting the position of the core mold, which is beneficial to improving the position stability and position adjustment accuracy of the tube hole forming part.

[0016] In a specific possible implementation scheme, the fiber introduction mechanism includes an inner layer fiber introduction mechanism and a surface layer fiber introduction mechanism, the inner layer fiber introduction mechanism includes a yarn rack, a side fiber bundle guide plate and a positioning guide plate, the positioning guide plate is fixed on the frame at the end of the pultrusion die hole, a plurality of fiber bundle guide holes are arranged on the positioning guide plate, and the plurality of fiber bundle guide holes are arranged in a circle with the center on the axis of the core mold, the side fiber bundle guide plates are arranged on both sides of the positioning guide plate and between the yarn rack, a plurality of fiber bundle guide holes arranged in an array are arranged on the side fiber bundle guide plate, and the fiber bundles in the fiber bundle roll placed on the yarn rack can be evenly distributed in the pultrusion die hole around the core mold after being guided by the side fiber bundle guide plate and the positioning guide plate; the surface fiber introduction mechanism can introduce the surface fiber layer on the inner and / or outer side of the fiber bundle.

[0017] By adopting the above technical scheme, multiple fiber bundle guide holes arranged in a circle on the positioning guide plate with the center on the core mold axis can be used to position and guide multiple reinforcing fiber bundles, so that multiple reinforcing fiber bundles can evenly enter the molding cavity around the tube hole molding part, thereby improving the uniformity of the distribution of the reinforcing fiber bundles in the molding cavity; the surface fiber introduction mechanism can be used to introduce the surface fiber layer on the inner side and / or outer side of the fiber bundle, radially strengthen the surface layer of the fiber composite material pultruded tube, and further improve the structural strength of the fiber composite material pultruded tube.

[0018] In a specific possible implementation scheme, the surface fiber introduction mechanism includes a fiber band mounting frame and a fiber band molding guide, the fiber band molding guide is sleeved on the core mold, the fiber band mounting frame is arranged on the periphery of the frame, and is arranged opposite to the fiber band molding guide. The fiber band molding guide can guide and mold the fiber band from the fiber band mounting frame to form an annular surface fiber layer on the inner or outer side of the fiber bundle.

[0019] By adopting the above technical solution, using the fiber band forming guide installed on the core mold, the fiber band from the fiber band mounting frame can be curled and formed to form an annular surface reinforcing fiber structure layer, which is beneficial to the surrounding covering of the surface fiber layer on the inside or outside of the fiber bundle.

[0020] In a specific possible implementation scheme, the fiber band forming guide includes a forming ring, a first guide wing and a second guide wing. The forming ring is sleeved on the core mold on the outside of the pultrusion molding die, and the first guide wing and the second guide wing are respectively arranged at different axial positions on the opposite sides of the forming ring away from one end of the pultrusion molding die, and the first guide wing is located on the side of the second guide wing away from the pultrusion molding die. The inner ends of the first guide wing and the second guide wing are fixedly connected to the forming ring, and the outer ends extend obliquely toward the other end of the forming ring. The inlet end of the inner hole of the forming ring is conical, and the outer guide surfaces of the first guide wing and the second guide wing gradually transition from an arc shape at the inner end to a straight line shape at the outer end, and a fiber band limiting hole is provided at the outer end.

[0021] By adopting the above-mentioned technical scheme, the two fiber bands can be guided and curled respectively by using the first guide wing and the second guide wing arranged on both sides of the molding ring, forming two semicircular structures to be introduced into the molding ring, and combined into a ring-shaped surface fiber layer in the molding ring; by using the arrangement that the first guide wing is located on the side of the second guide wing away from the pultrusion molding die, one fiber band can be first curled and formed in the molding ring by using the first guide wing, and then another fiber band can be curled and formed on the inner side of the first fiber band by using the second guide wing, and the edge is overlapped with the edge of the first fiber band to form a ring-shaped surface fiber layer; by using the fiber band limiting holes arranged at the outer ends of the first guide wing and the second guide wing, the position of the fiber band on the outer guide surfaces of the first guide wing and the second guide wing can be limited to ensure the curling and mutual overlap of the fiber bands.

[0022] In a specific feasible implementation scheme, the glue injection mechanism includes a first raw material barrel, a second raw material barrel, a first metering pump, a second metering pump and a mixer, the inlet of the first metering pump is connected to the first raw material barrel through a pipeline, and the outlet is connected to the first inlet of the mixer through a pipeline, the inlet of the second metering pump is connected to the second raw material barrel through a pipeline, and the outlet is connected to the second inlet of the mixer through a pipeline, and the outlet of the mixer is connected to the glue injection hole; overflow valves are respectively arranged on the outlet pipelines of the first metering pump and the second metering pump, and the overflow ports of the overflow valves are connected to the corresponding first raw material barrel or the second raw material barrel.

[0023] By adopting the above technical scheme, the first metering pump and the second metering pump respectively connected to the first raw material barrel and the second raw material barrel can be used to drive the set amount of the first raw material in the first raw material barrel and the second raw material in the second raw material barrel respectively, and mix them with each other in the mixer in a set ratio to form a matrix resin that meets the composite setting requirements; the overflow valves arranged on the outlet pipelines of the first metering pump and the second metering pump can be used to limit the pressure of the first raw material and the second raw material in the pipeline respectively, so as to prevent various reasons from causing the output pressure of the first metering pump or the second metering pump to be too high, thereby preventing damage to the conveying pipeline.

[0024] In a specific feasible implementation manner, a reflux three-way valve and a cleaning three-way valve are respectively provided on the pipelines of the first inlet and the second inlet of the mixer, the reflux three-way valve is connected between the outlet of the first metering pump or the second metering pump, the cleaning three-way valve and the first raw material barrel or the second raw material barrel, and the cleaning three-way valve is connected between the reflux three-way valve, the cleaning liquid container and the first inlet or the second inlet of the mixer.

[0025] By adopting the above technical scheme, by using the reflux three-way valve respectively connected to the reflux three-way valve between the first metering pump, the cleaning three-way valve and the first raw material barrel, and between the second metering pump, the cleaning three-way valve and the second raw material barrel, the first raw material output by the first metering pump can be refluxed into the first raw material barrel, and the second raw material output by the second metering pump can be refluxed into the second raw material barrel, thereby ensuring the filling and emptying of the first raw material and the second raw material in the conveying pipeline, ensuring the ratio of the first raw material to the second raw material, and reducing the waste of raw materials; by using the cleaning three-way valve respectively connected to a reflux three-way valve, a cleaning liquid container and a first inlet of the mixer, and another reflux three-way valve, a cleaning liquid container and a second inlet, cleaning liquid can be conveniently introduced from the cleaning liquid container after the work is completed, so as to clean the first raw material, the second raw material and the base resin remaining in the mixer, and prevent the mixer and its rear end pipeline from being blocked.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By using the impregnation groove arranged on the core mold and the injection hole connected to the impregnation groove, the matrix resin can be ensured to flow quickly and be evenly distributed at different positions on the outer peripheral surface of the core mold, and a matrix resin pool with a large capacity is formed, so as to ensure that the matrix resin is fully and evenly infiltrated into the reinforcing fibers at different positions around the core mold, and the uniformity of the distribution of the matrix resin and the reinforcing fibers in the fiber composite material pultruded tube is ensured, and the structural strength of the fiber composite material pultruded tube is ensured; 2. By using the different shapes of the feeding side wall, bottom wall and discharge side wall of the impregnation tank, such as the conical surface, the concave spherical zone shape and the convex paraboloid shape, and setting the axial length of the discharge side wall to be greater than the axial length of the feeding side wall, it is possible to ensure that the matrix resin forms a certain pressure in the impregnation tank, which is conducive to the rapid flow of the matrix resin in the impregnation tank and always maintains a full state, ensuring that the matrix resin fully impregnates the reinforcing fibers, ensuring the uniformity of the distribution of the reinforcing fibers and the matrix resin in the fiber composite material and the structural strength of the pultruded tube; 3. Through the core mold mounting hole on the core mold mounting seat and the lateral position adjustment mechanism and the vertical position adjustment mechanism arranged on the wall of the core mold mounting hole, the core mold can be fixedly suspended in the pultrusion die hole through one end of the core mold, and the position state of the core mold in the pultrusion die hole can be conveniently adjusted to ensure the position stability of the core mold in the pultrusion die hole and the uniformity of the wall thickness of the fiber composite material pultruded tube pultruded by the infiltration molding mechanism; 4. Through the fiber band forming guide composed of a forming ring, a first guide wing and a second guide wing, the first guide wing and the second guide wing can be used to guide each fiber band, and the two fiber bands are curled into arc structures respectively and then combined with each other into a circular surface fiber layer, thereby strengthening the surface layer of the fiber composite material pultruded tube and improving the surface quality and structural strength of the fiber composite material pultruded tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of an embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of an infiltration molding mechanism and a partial fiber introduction mechanism in one embodiment of the present application.

[0029] Figure 3 This is a schematic diagram of the core mold structure in one embodiment of the present application.

[0030] Figure 4 This is a schematic diagram of the structure of the infiltration tank in one embodiment of the present application.

[0031] Figure 5 This is a schematic diagram of the structure of the core mold mounting seat area in one embodiment of the present application.

[0032] Figure 6 This is a schematic diagram of a core mold mounting seat in one embodiment of the present application.

[0033] Figure 7 This is a schematic diagram from another perspective of the core mold mounting seat in one embodiment of the present application.

[0034] Figure 8 This is a schematic transverse cross-sectional view of a core mold mounting seat in one embodiment of the present application.

[0035] Fig. 9 This is a partial longitudinal cross-sectional schematic diagram of the core mold mounting seat in one embodiment of the present application.

[0036] Fig.10 This is a schematic diagram of a wedge-shaped pad in an embodiment of the present application.

[0037] Fig.11 This is a schematic diagram of a mobile driving block in one embodiment of the present application.

[0038] Fig.12 This is a schematic diagram of a fiber band forming guide in one embodiment of the present application.

[0039] Fig.13 This is a schematic diagram of the glue injection mechanism in one embodiment of the present application.

[0040] Description of reference numerals: 1. frame; 11. core mold mounting cross bar; 2. fiber introduction mechanism; 21. yarn rack; 22. side fiber bundle guide plate; 23. positioning guide plate; 24. fiber belt mounting frame; 25. fiber belt forming guide; 251. forming ring; 252. first guide wing; 253. second guide wing; 254. fiber belt limiting hole; 3. glue injection mechanism; 31. first raw material barrel; 32. second raw material barrel; 33. first metering pump; 34. second metering pump; 35. mixer; 36. overflow valve; 37. reflux three-way valve; 38. cleaning three-way valve; 39. cleaning liquid container; 4. infiltration molding mechanism; 41. pultrusion molding die; 411. pultrusion die hole; 412. glue injection hole; 42. core mold; 421. wetting groove; 4211. feed side wall; 4212. bottom wall; 4213. discharge side wall; 422. mounting and fixing part; 423. tube hole forming part; 43. core mold mounting seat; 431. core mold mounting hole; 432. lateral adjustment bolt; 433. lateral driving wheel; 434. lateral push screw; 435. vertical adjustment screw; 436. mobile driving block; 4361. side driving strip; 437. wedge-shaped pad; 4371. wedge-shaped strip; 4372. pad driving slot; 4373. driving block slide; 5. traction mechanism; 6. cutting mechanism. DETAILED DESCRIPTION

[0041] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0042] In this application, unless otherwise stated, the directions or positional relationships indicated by the directional words such as "longitudinal, transverse" are based on the directions or positional relationships of the movement of the reinforcing fibers and the fiber composite pultruded tubes in the fiber composite pultruded tube production equipment of this application. Among them, the directional word "longitudinal" refers to the direction of movement of the fiber composite pultruded tubes and their manufacturing materials in this application, and "transverse" refers to the direction perpendicular to the "longitudinal" on the horizontal plane. The description of the directions or positional relationships of the fiber composite pultruded tube production equipment and its components of this application is consistent with the actual installation directions in the production line when it is used.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0045] An embodiment of the fiber composite material pultrusion tube production equipment of the present application is as follows Figures 1 to 3 As shown, it includes a frame 1, a fiber introduction mechanism 2, a glue injection mechanism 3, an impregnation molding mechanism 4, a traction mechanism 5 and a cutting mechanism 6. The frame 1 is an installation and positioning platform for the fiber composite material pultruded tube production equipment of the present application, and other structures in the fiber composite material pultruded tube production equipment of the present application are installed and positioned on the frame 1 or its surrounding area to form positioning between different functional structures and positional relationships between each other.

[0046] The fiber introduction mechanism 2, the impregnation and molding mechanism 4, the traction mechanism 5 and the cutting mechanism 6 are sequentially arranged on the frame 1, wherein the fiber introduction mechanism 2 is arranged at one end of the frame 1, and the fiber material for reinforcing the composite material structure is introduced into the impregnation and molding mechanism 4, and the matrix resin is added to the impregnation and molding mechanism 4 to process the fiber composite material pultrusion tube.

[0047] The impregnation molding mechanism 4 includes a pultrusion die 41 and a core die 42, wherein the pultrusion die 41 is longitudinally fixed on the frame 1, and a longitudinally extending pultrusion die hole 411 is provided on the pultrusion die 41. The core die 42 is configured as a long cylindrical rod-shaped structure as a whole, and the outer diameter of the core die 42 is smaller than the diameter of the pultrusion die hole 411. One end of the core die 42 is fixed on the frame 1, and the other end extends into and is suspended in the pultrusion die hole 411, and the central axis of the core die 42 and the central axis of the pultrusion die hole 411 are arranged on the same straight line, so that the pultrusion die hole 411 around the core die 42 is formed into an annular space with uniform thickness, and the reinforcing fiber material introduced through the fiber introduction mechanism 2 enters the annular space and is evenly distributed in the annular space.

[0048] An inwardly concave impregnation groove 421 is provided on the outer peripheral surface of the core mold 42, and a glue injection hole 412 is provided at the top of the pultrusion mold 41 at a position corresponding to the impregnation groove 421. The glue injection hole 412 penetrates the wall of the pultrusion mold 41 and is connected to the pultrusion mold hole 411. The glue injection mechanism 3 is provided on one side of the frame 1, at a position opposite to the impregnation molding mechanism 4. The glue injection mechanism 3 is connected to the top of the pultrusion mold 41 through a glue injection pipeline and is connected to the glue injection hole 412. The glue injection mechanism 3 is used to allow a matrix resin such as polyurethane glue or resin glue for making a fiber composite material to enter the pultrusion mold hole 411 through the glue injection hole 412 and mix with the reinforcing fiber material.

[0049] The impregnation groove 421 is arranged around the outer peripheral surface of the core mold 42, and an annular matrix resin accommodating space is formed on the outer periphery of the core mold 42. The matrix resin entering the pultrusion die hole 411 through the injection hole 412 can flow faster along the impregnation groove 421, filling the impregnation groove 421 to form a matrix resin pool. When the reinforcing fiber material in the annular space outside the core mold 42 passes through the matrix resin pool, the matrix resin can be fully impregnated in the fiber material. The matrix resin usually uses a low-viscosity matrix resin with a viscosity between 250-350 / cps, which is conducive to the flow and impregnation of the matrix resin in the impregnation groove 421 and between the reinforcing fibers. When the fiber material passes through the impregnation molding mechanism 4 under the action of traction, the pultrusion molding die 41 and the core mold 42 extrude the fiber material impregnated with the matrix resin from both inside and outside, so that the matrix resin is evenly distributed in the reinforcing fiber material. The matrix resin impregnated with the fiber material is gradually solidified and shaped between the pultrusion die 41 and the core die 42 to form a high-strength tubular fiber composite material.

[0050] The traction mechanism 5 is arranged at the discharge end of the impregnation and molding mechanism 4, and is used to pull the tubular fiber composite material. While driving the tubular fiber composite material to be transmitted on the production equipment, the reinforced fiber material continuously enters the impregnation and molding mechanism 4, impregnates the matrix resin in the pultrusion die hole 411 outside the core mold 42, and pultrudes the impregnated fiber material and solidifies it in the molding space.

[0051] The cutting mechanism 6 is arranged at one end of the traction mechanism 5 away from the impregnation molding mechanism 4, and is used to cut the tubular fiber composite material into a set length to obtain a fiber composite material pultruded tube with a certain length.

[0052] The fiber composite pultruded tube production equipment of the present application is generally used for the production of medium-to-large diameter, thick-walled composite pultruded tubes, and is particularly suitable for the production of composite pultruded round tubes with a diameter of 400-600mm and a wall thickness of 10-16mm.

[0053] In some embodiments of the fiber composite pultrusion tube production equipment of the present application, as Figures 2 to 4As shown, the impregnation groove 421 is arranged transversely perpendicular to the axial direction of the core mold 42, so that the fiber materials at different positions around the core mold 42 are in contact with the matrix resin at the same time during the forward process, ensuring the consistency of the matrix resin impregnation and curing. The impregnation groove 421 includes a feed side wall 4211, a bottom wall 4212 and a discharge side wall 4213 that are sequentially connected to each other from the feed side to the discharge side. The feed side wall 4211 is in a conical shape, the bottom wall 4212 is in a concave spherical band shape, and the discharge side wall 4213 is in a convex parabola shape, so that the feed side wall 4211, the bottom wall 4212 and the discharge side wall 4213 are respectively in a straight line shape, a concave arc shape and a convex parabola shape on the longitudinal section. The smooth transition between the feed side wall 4211 , the bottom wall 4212 and the discharge side wall 4213 is conducive to the smooth flow of the matrix resin in the impregnation tank 421 and the longitudinal movement of the fiber material across the impregnation tank 421 .

[0054] The axial length of the discharge side wall 4213 is greater than the axial length of the feed side wall 4211, so that the feed side wall 4211 and the axis of the core mold 42 form a large angle, and the feed side wall 4211 can be used to limit the matrix resin in the impregnation groove 421, and cooperate with the movement of the fiber material to prevent the matrix resin from moving toward the inlet direction of the pultrusion die hole 411. The angle between the convex parabolic discharge side wall 4213 and the axis of the core mold 42 is small, and the discharge side wall 4213 can be used to gradually squeeze the fiber material impregnated with the matrix resin, which is conducive to the full and uniform infiltration of the matrix resin in the fiber material, and ensures the structural density of the tubular fiber composite material. The concave arc-shaped bottom wall 4212 is not only conducive to forming a smooth transition between the feed side wall 4211 and the discharge side wall 4213, but also can form a larger matrix resin storage capacity of the impregnation groove 421.

[0055] In some embodiments of the fiber composite pultrusion tube production equipment of the present application, as Figure 2 and Figure 3 As shown, the core mold 42 includes a mounting and fixing portion 422 and a tube hole forming portion 423, and the mounting and fixing portion 422 is integrally formed at one end of the tube hole forming portion 423. The mounting and fixing portion 422 is set in a square shape, which is conducive to better defining the position of the core mold 42 when the core mold 42 is fixed by the mounting and fixing portion 422. The tube hole forming portion 423 is cylindrical as a whole, and is used to form the shape and size of the inner hole of the tubular fiber composite material. The impregnation groove 421 is set on the tube hole forming portion 423, which is conducive to the uniform distribution of the matrix resin in the reinforcing fiber material and the pultrusion molding of the tubular fiber composite material.

[0056] The infiltration molding mechanism 4 also includes a core mold mounting seat 43 fixedly mounted on the frame 1, and a core mold mounting hole 431 is arranged on the core mold mounting seat 43. The core mold mounting hole 431 is arranged in a rectangular parallelepiped shape with the upper and lower bottom surfaces arranged horizontally and the left and right side surfaces arranged vertically. The mounting and fixing portion 422 is mounted and fixed in the core mold mounting hole 431, and the tube hole forming portion 423 is suspended in the pultrusion die hole 411 by the torque of the core mold mounting seat 43 acting on the mounting and fixing portion 422, so as to form an unobstructed annular space at the discharge end between the tube hole forming portion 423 and the side wall of the pultrusion die hole 411.

[0057] A lateral position adjustment mechanism is provided on both sides of the core mold mounting hole 431 in the lateral direction, usually on the side walls close to the left and right sides in the horizontal direction, and the lateral position adjustment mechanism can be used to adjust the lateral position of the mounting and fixing part 422 in the core mold mounting hole 431 and the angle in the lateral direction. A vertical position adjustment mechanism is provided on both sides of the core mold mounting hole 431 in the vertical direction, usually on the upper and lower sides, and the vertical position adjustment mechanism can be used to adjust the vertical position of the mounting and fixing part 422 in the core mold mounting hole 431 and the angle in the vertical direction. By adjusting the lateral position and angle, as well as the vertical position and angle of the mounting and fixing part 422, it is possible to ensure that the axis of the tube hole forming part 423 is in line with the axis of the pultrusion die hole 411, and ensure the uniformity of the thickness of the annular space in the pultrusion die hole 411 outside the tube hole forming part 423, thereby ensuring the uniformity of the wall thickness of the tubular fiber composite material.

[0058] In a preferred embodiment of the fiber composite material pultrusion tube production equipment of the present application, as Figures 5 to 7 As shown, the lateral position adjustment mechanism includes a lateral adjustment bolt 432, a lateral drive wheel 433 and a lateral push screw 434. The lateral adjustment bolt 432 is rotatably mounted on the outer side walls on the left and right sides of the core mold mounting seat 43, and the lateral drive wheel 433 is arranged on the side of the lateral adjustment bolt 432 and is rotatably connected to the side wall of the core mold mounting seat 43, so that the lateral drive wheel 433 can only rotate relative to the core mold mounting seat 43, but cannot move axially relative to the core mold mounting seat 43.

[0059] The outer periphery of the lateral driving wheel 433 is provided with helical teeth meshing with the lateral adjusting bolt 432, forming a turbine tooth, so that the lateral driving wheel 433 and the lateral adjusting bolt 432 form a turbine worm matching structure. A threaded hole is provided in the middle of the lateral driving wheel 433, and is threadedly connected with the lateral pushing screw 434 through the threaded hole. One end of the lateral pushing screw 434 passes through the side wall of the core mold mounting seat 43 and enters the core mold mounting hole 431. The lateral pushing screw 434 is provided with an axially extending sliding groove, and the corresponding position of the side wall of the core mold mounting seat 43 is provided with a sliding engaging tooth adapted to the sliding groove. The lateral pushing screw 434 is slidably connected with the side wall of the core mold mounting seat 43 through the cooperation of the sliding groove and the sliding engaging tooth.

[0060] Rotating the lateral adjustment bolt 432 can drive the lateral driving wheel 433 to rotate, and through the threaded connection between the lateral driving wheel 433 and the lateral pushing screw 434, the lateral pushing screw 434 is driven to slide relative to the side wall of the core mold mounting seat 43, changing the lateral position of the end of the lateral pushing screw 434 in the core mold mounting hole 431, thereby adjusting the lateral position of the mounting fixing portion 422. The lateral adjustment bolt 432 drives the lateral pushing screw 434 through the lateral driving wheel 433, which can reduce the advancement speed of the lateral pushing screw 434, improve the adjustment accuracy of the lateral pushing screw 434, and improve the advancement force of the lateral pushing screw 434.

[0061] like Figure 8 and Fig. 9 As shown, the vertical position adjustment mechanism includes a vertical adjustment screw 435, a moving drive block 436 and a wedge-shaped pad 437. A transversely extending wedge-shaped groove is provided on the inner side of the top wall and the bottom wall of the core mold mounting hole 431, and a mutually adapted wedge-shaped strip 4371 is provided at the corresponding position of the wedge-shaped pad 437. A wedge-shaped pad 437 is installed on the top surface and the bottom surface of the core mold mounting hole 431, and the wedge-shaped strip 4371 is located in the corresponding wedge-shaped groove, so as to form a sliding connection between the wedge-shaped pad 437 and the wall portion of the core mold mounting hole 431.

[0062] like Figure 8 and Fig.10 As shown, two wedge-shaped strips 4371 are provided on the wedge-shaped pad 437, and a pad driving slot body 4372 is provided between the two wedge-shaped strips 4371. The extending direction of the pad driving slot body 4372 is the same as the extending direction of the wedge-shaped strip 4371. A driving block slot is provided on the pad driving slot body 4372, and vertically extending driving block slide slots 4373 are provided on the side walls on both sides of the driving block slot.

[0063] like Figure 8 , Fig. 9 and Fig.11 As shown, the mobile driving block 436 is configured as a metal block in a square shape as a whole, a driving threaded hole extending laterally is provided in the middle of the mobile driving block 436, and side driving bars 4361 are provided on both longitudinal sides of the mobile driving block 436. The mobile driving block 436 is installed in the driving block groove on the pad driving groove body 4372, and the side driving bars 4361 are engaged in the driving block slide groove 4373, so that the mobile driving block 436 can slide in the pad driving groove body 4372. The vertical adjustment screw 435 passes through the side wall of the core mold mounting seat 43 laterally and enters the core mold mounting hole 431, and is rotatably connected to the side wall of the core mold mounting seat 43, and the vertical adjustment screw 435 is screwed into the driving threaded hole and is threadedly connected to the mobile driving block 436.

[0064] Rotating the vertical adjustment screw 435 can drive the moving drive block 436 to move horizontally, and push the wedge-shaped pad block 437 to move horizontally through the pad drive groove 4372. The lateral movement of the wedge-shaped pad block 437 allows the wedge-shaped strip 4371 to be supported at different positions in the wedge-shaped groove of the wall of the core mold mounting hole 431, forming different vertical positions of the wedge-shaped pad block 437 in the core mold mounting hole 431, thereby adjusting the vertical position of the mounting fixing portion 422. The sliding connection between the movable driving block 436 and the pad driving groove body 4372 can ensure that the change of the vertical position of the wedge pad 437 will not affect the threaded connection between the vertical adjusting screw 435 and the movable driving block 436; the direction in which the wedge pad 437 is driven to slide by the vertical adjusting screw 435 can increase the propulsion force of the vertical adjusting screw 435 on the wedge pad 437, and the wedge pad 437 can form a greater clamping force on the mounting and fixing part 422, adapting to the greater clamping force formed by the tube hole forming part 423 in the suspended state.

[0065] As a specific embodiment of the fiber composite material pultruded tube production equipment of the present application, Figure 6 and Figure 7 As shown, there are multiple lateral drive wheels 433 and lateral push screws 434 on both sides of the core mold mounting seat 43, such as two lateral drive wheels 433 and two lateral push screws 434 are respectively arranged on both sides of the core mold mounting seat 43. The two lateral drive wheels 433 on each side are respectively arranged on both sides of the vertical adjustment screw 435, and mesh with the vertical adjustment screw 435 from both sides of the vertical adjustment screw 435. Each lateral push screw 434 is arranged corresponding to a lateral drive wheel 433, and the two lateral push screws are screwed into the threaded holes of the two lateral drive wheels 433. The arrangement of multiple lateral drive wheels 433 and multiple lateral push screws 434 can drive the multiple lateral push screws 434 to move synchronously through the vertical adjustment screw 435, thereby improving the propulsion force when adjusting the position of the mounting and fixing portion 422, and is conducive to improving the position accuracy of the mounting and fixing portion 422.

[0066] like Figure 5 and Fig. 9 As shown, a core mold installation cross bar 11 is arranged horizontally on the frame 1, and two core mold installation seats 43 are arranged, and the two core mold installation seats 43 are symmetrically fixed on both sides of the longitudinal direction of the core mold installation cross bar 11. A through hole with a cross-sectional area larger than that of the core mold installation hole 431 is arranged on the core mold installation cross bar 11, and the core mold installation hole 431 of the core mold installation seat 43 is connected through the through hole on the core mold installation cross bar 11, and the positions are relatively arranged in the longitudinal direction.

[0067] The provision of two core mold mounting seats 43 not only increases the length of the position limitation of the mounting and fixing portion 422 and improves the supporting torque acting on the core mold 42, but also can independently limit the mounting and fixing portion 422 from different axial positions, thereby being able to conveniently adjust the lateral angle and the vertical angle between the core mold 42 and the core mold mounting cross bar 11 by adjusting the lateral adjustment bolts 432 and the vertical adjustment screws 435 on different core mold mounting seats 43, thereby ensuring the coaxial setting between the tube hole forming portion 423 and the core mold mounting hole 431.

[0068] In some embodiments of the fiber composite pultrusion tube production equipment of the present application, as Figure 1 and Figure 2 As shown, the fiber introduction mechanism 2 includes an inner fiber introduction mechanism and a surface fiber introduction mechanism. The inner fiber introduction mechanism includes a creel 21, a side fiber bundle guide plate 22 and a positioning guide plate 23. The creel 21 is a frame for placing a reinforcing fiber bundle roll. The creel 21 is arranged at the feed end of the frame 1. A plurality of fiber bundle rolls are placed on the creel 21. The reinforcing fiber bundle on each roll is guided by the guide mechanism and then led out from the creel 21.

[0069] The positioning guide plate 23 is fixed on the frame 1 and is arranged opposite to the feed end of the pultrusion die hole 411. A core die through hole is arranged in the middle of the positioning guide plate 23, and a plurality of evenly arranged fiber bundle guide holes are arranged around the core die through hole. The plurality of fiber bundle guide holes and the core die through hole are arranged in a concentric circle, and the circle is located on the axis of the core die 42.

[0070] The side fiber bundle guide plate 22 is arranged between the positioning guide plate 23 and the creel 21. Two side fiber bundle guide plates 22 are provided, and the two side fiber bundle guide plates 22 are respectively arranged on the left and right sides of the core mold 42. A plurality of fiber bundle guide holes arranged in an array are provided on the side fiber bundle guide plate 22. The fiber bundles in the fiber bundle roll placed on the creel 21 are divided to the left and right sides, and respectively pass through the fiber bundle guide holes on the side fiber bundle guide plates 22 on both sides, and then enter the fiber bundle guide holes on the positioning guide plate 23. After being guided by the fiber bundle guide holes on the positioning guide plate 23, they enter the pultrusion die hole 411 outside the periphery of the core mold 42, and are evenly distributed in the annular space around the core mold 42. Through the layered guidance of the side fiber bundle guide plate 22 and the positioning guide plate 23, the turning angle of the fiber bundle can be reduced, and the uniformity of the distribution of the fiber bundle in the annular space around the pultrusion die hole 411 can be ensured.

[0071] The surface fiber introduction mechanism includes at least one of an inner fiber introduction mechanism and an outer fiber introduction mechanism. The inner fiber introduction mechanism is arranged between the side fiber bundle guide plate 22 and the positioning guide plate 23, and can introduce the surface fiber layer on the inner side of the fiber bundle; the outer fiber introduction mechanism is arranged between the positioning guide plate 23 and the pultrusion die 41, and can introduce the surface fiber layer on the outer side of the fiber bundle. The circumferential reinforcement is formed by the inner layer and / or outer layer of the fiber bundle to improve the structural strength of the fiber composite material pipe wall.

[0072] In a preferred embodiment of the fiber composite material pultrusion tube production equipment of the present application, as Figure 1 As shown, the surface fiber introduction mechanism includes a fiber band mounting frame 24 and a fiber band forming guide 25. The fiber band mounting frame 24 is arranged on the ground on both sides of the frame 1. A material roll mounting shaft is arranged on the fiber band mounting frame 24, and the fiber band material roll is rotatably mounted on the material roll mounting shaft; the fiber band forming guide 25 is sleeved on the core mold 42, and is used to introduce the fiber band in the fiber band material roll into the core mold 42 on the inner side of the fiber bundle, or into the pultrusion die hole 411 on the outer side of the fiber bundle, and form a closed circle on the inner side and / or the outer side of the fiber bundle.

[0073] Among them, the fiber band mounting frame 24 of the inner layer fiber introduction mechanism is arranged on the same side of the frame 1, and two upper and lower material roll mounting shafts are arranged on the fiber band mounting frame 24, and the two material roll mounting shafts are respectively located on the upper and lower sides of the core mold 42. The fiber band forming guide 25 of the inner layer fiber introduction mechanism is arranged opposite to the material roll mounting shaft, and is used to curl the fiber band on the fiber band material roll installed on the upper and lower material roll mounting shafts, and then overlap into a circular ring on the inner side of the fiber bundle to form the inner surface fiber layer. There are two fiber band mounting frames 24 of the outer layer fiber introduction mechanism, and the two fiber band mounting frames 24 are respectively arranged on both sides of the frame 1, and each fiber band mounting frame 24 is respectively arranged with a material roll mounting shaft, and the two material roll mounting shafts are respectively located on the left and right sides of the core mold 42. The fiber band forming guide 25 of the outer layer fiber introduction mechanism is arranged opposite to the material roll mounting shaft, and is used to curl the fiber band on the fiber band material roll installed on the left and right material roll mounting shafts, and then overlap into a circular ring on the outer side of the fiber bundle to form the outer surface fiber layer.

[0074] As a specific embodiment of the fiber composite material pultruded tube production equipment of the present application, Figure 1 and Fig.12 As shown, the fiber band forming guide 25 includes a forming ring 251, a first guide wing 252 and a second guide wing 253. The forming ring 251 is sleeved on the core mold 42 outside the pultrusion forming mold 41. The forming ring 251 can be fixed on the frame 1 through a fixing structure, or fixed on a specially provided mounting frame, and an annular gap is formed between the forming ring 251 and the core mold 42.

[0075] The first guide wing 252 and the second guide wing 253 are respectively arranged on opposite sides of the circumference of the forming ring 251, and the first guide wing 252 and the second guide wing 253 are fixed at different axial positions of one end of the forming ring 251. When the forming ring 251 is sleeved on the core mold 42, the first guide wing 252 and the second guide wing 253 are fixed at one end of the forming ring 251 away from the pultrusion forming mold 41, and the first guide wing 252 is located on the side of the second guide wing 253 away from the pultrusion forming mold 41. The inner ends of the first guide wing 252 and the second guide wing 253 are fixedly connected to one end of the forming ring 251, and the outer ends extend obliquely toward the other end of the forming ring 251, respectively pointing to a material roll installation axis position.

[0076] The outer guide surfaces of the first guide wing 252 and the second guide wing 253 gradually transition from the arc shape at the inner end to the straight line shape at the outer end. When the fiber band on the fiber band roll moves from the outer end of the outer guide surface of the first guide wing 252 or the second guide wing 253 to the inner end, the outer guide surfaces of the first guide wing 252 and the second guide wing 253 guide and shape the fiber band, so that the fiber band curls into an arc shape, turns to enter the annular gap between the molding ring 251 and the core mold 42, and overlaps with each other in the annular gap to form a circular surface fiber layer. A fiber band limiting hole 254 is provided at the outer end of the outer guide surface, and the fiber band passes through the fiber band limiting hole 254 to enter the outer guide surface to prevent the fiber band from sliding off the outer guide surface. The inlet end of the inner hole of the forming ring 251 is set as a conical surface with a larger outer diameter. The conical inlet end of the inner hole of the forming ring 251 allows the fiber band guided by the outer guide surfaces of the first guide wing 252 and the second guide wing 253 to more easily enter the gap between the forming ring 251 and the core mold 42. The first guide wing 252 is located on the side of the second guide wing 253 away from the pultrusion forming mold 41, so that the fiber band introduced through the first guide wing 252 is first curled in the inner hole of the forming ring 251, and then the fiber band introduced through the second guide wing 253 is curled, so as to prevent interference between the fiber bands on both sides when the fiber bands on both sides are curled and overlapped at the same time.

[0077] In some embodiments of the fiber composite pultrusion tube production equipment of the present application, as Figure 1 and Fig.13As shown, the glue injection mechanism 3 includes a first raw material barrel 31, a second raw material barrel 32, a first metering pump 33, a second metering pump 34 and a mixer 35. The first raw material barrel 31 and the second raw material barrel 32 are usually arranged on a raw material barrel placement rack on one side of the frame 1. The base resin used in this application is usually a two-component polyurethane resin or a two-component epoxy resin. The A raw material and the B raw material of the base resin are respectively placed in the first raw material barrel 31 and the second raw material barrel 32. A desiccant barrel can also be arranged on the first raw material barrel 31, and an agitator is usually arranged on the second raw material barrel 32.

[0078] The first metering pump 33 and the second metering pump 34 can use various suitable metering pumps, such as plunger pumps. The first metering pump 33 and the second metering pump 34 are both arranged on the raw material barrel placement rack. The inlet of the first metering pump 33 is connected to the first raw material barrel 31 through a pipeline, and the outlet is connected to the first inlet of the mixer 35 through a pipeline, so as to drive the set flow rate of the A raw material into the mixer 35 through the first inlet; the inlet of the second metering pump 34 is connected to the second raw material barrel 32 through a pipeline, and the outlet is connected to the second inlet of the mixer 35 through a pipeline, so as to drive the set flow rate of the B raw material into the mixer 35 through the second inlet. The mixer 35 can mix the A raw material entering through the first inlet with the B raw material entering through the second inlet to form a base resin formed by mixing the A raw material and the B raw material in a set ratio.

[0079] The outlet of the mixer 35 is connected to the injection hole 412 through a pipeline, and the mixed matrix resin enters the pultrusion die hole 411 through the injection hole 412, and fully infiltrates the reinforcing fibers in the pultrusion die hole 411. A heating device and a cooling device may also be provided in the pultrusion die 41 behind the injection hole 412 to promote the curing of the matrix resin and the molding of the tubular fiber composite material.

[0080] An overflow valve 36 is provided on the outlet pipeline of the first metering pump 33 and the outlet pipeline of the second metering pump 34. The overflow port of the overflow valve 36 on the outlet pipeline of the first metering pump 33 is connected to the first raw material barrel 31, and the overflow port of the overflow valve 36 on the outlet pipeline of the second metering pump 34 is connected to the second raw material barrel 32 through a pipeline. The setting of the overflow valve 36 can prevent the outlet pipeline of the first metering pump 33 or the outlet pipeline of the second metering pump 34 from being blocked, resulting in excessive increase in pressure in the pipeline, thereby ensuring the safety of the pipeline structure.

[0081] In a preferred embodiment of the fiber composite material pultrusion tube production equipment of the present application, as Figure 1 and Fig.13As shown, a reflux three-way valve 37 and a cleaning three-way valve 38 are respectively provided on the pipelines of the first inlet and the second inlet of the mixer 35. The reflux three-way valve 37 on the first inlet pipeline of the mixer 35 is connected between the outlet of the first metering pump 33, a cleaning three-way valve 38 and the first raw material barrel 31, and the reflux three-way valve 37 on the second inlet pipeline is connected between the outlet of the second metering pump 34, another cleaning three-way valve 38 and the second raw material barrel 32. By switching the connection direction of the reflux three-way valve 37, the raw material A outputted by the first metering pump 33 or the raw material B outputted by the second metering pump 34 can be refluxed into the first raw material barrel 31 or the second raw material barrel 32, so as to ensure that the raw materials A and B fill the inlet pipeline of the mixer 35 and ensure the correctness of the ratio of the raw materials A and B; or the raw material A outputted by the first metering pump 33 enters the first inlet of the mixer 35 through a cleaning three-way valve 38, and the raw material B outputted by the second metering pump 34 enters the second inlet of the mixer 35 through another cleaning three-way valve 38, and enters the mixer 35 through the first inlet and the second inlet respectively, and mixes with each other in the mixer 35 to form the base resin.

[0082] One cleaning three-way valve 38 is connected between one reflux three-way valve 37, the cleaning liquid container 39 and the first inlet of the mixer 35, and another cleaning three-way valve 38 is connected between another reflux three-way valve 37, the cleaning liquid container 39 and the second inlet of the mixer 35. By switching the connection direction of the cleaning three-way valve 38, the raw material A transmitted through one reflux three-way valve 37 can be introduced into the first inlet of the mixer 35, and the raw material B transmitted through another reflux three-way valve 37 can be introduced into the second inlet of the mixer 35, so that the raw material A and the raw material B are mixed with each other in a certain proportion in the mixer 35 to form the matrix resin; or the cleaning liquid stored in the cleaning liquid container 39 is introduced into the mixer 35 through the first inlet and the second inlet of the mixer 35 respectively, and the cleaning liquid is used to clean the mixer 35 and its connecting pipelines after the work is completed to prevent the matrix resin from solidifying in the mixer 35 or its connecting pipelines and causing the mixer 35 or its connecting pipelines to be blocked. Usually, a compressed air pipe is connected to the cleaning liquid container 39, and the compressed air is used to drive the cleaning liquid in the cleaning liquid container 39 to flow to the cleaning three-way valve 38 and enter the mixer 35 to clean the mixer 35 and its inlet and outlet pipelines.

[0083] In the description of the present invention, the description with reference to the terms "one embodiment", "specific embodiment", "preferred embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0084] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fiber composite material pultruded tube production equipment, characterized in that: The invention comprises a frame (1), a fiber introduction mechanism (2), a glue injection mechanism (3), an impregnation molding mechanism (4), a traction mechanism (5) and a cutting mechanism (6), wherein the fiber introduction mechanism (2), the impregnation molding mechanism (4), the traction mechanism (5) and the cutting mechanism (6) are arranged on the frame (1) in sequence, the impregnation molding mechanism (4) comprises a pultrusion molding die (41) and a core die (42), the pultrusion molding die (41) is fixed on the frame (1), a pultrusion molding die hole (411) is arranged on the pultrusion molding die (41), one end of the core die (42) is fixed on the frame (1), and the other end extends into the pultrusion molding die hole (411) and is arranged coaxially with the pultrusion molding die hole (411), The fiber introduction mechanism (2) is capable of introducing fiber material into the pultrusion die hole (411) outside the core die (42); an impregnation groove (421) is provided on the outer periphery of the core die (42); a glue injection hole (412) penetrating the side wall of the pultrusion die hole (411) is provided on the pultrusion forming die (41) at a position corresponding to the impregnation groove (421); the glue injection mechanism (3) is connected to the pultrusion forming die (41) at the glue injection hole (412) so as to be able to inject matrix resin into the pultrusion die hole (411), so that the matrix resin is impregnated in the fiber material and forms a tubular fiber composite material after solidification; after being towed by the towing mechanism (5) and cut by the cutting mechanism (6), a fiber composite material pultruded tube is obtained.

2. The fiber composite material pultrusion tube production equipment according to claim 1, characterized in that: The wetting groove (421) is arranged perpendicular to the axial direction of the core mold (42), and comprises a feed side wall (4211), a bottom wall (4212), and a discharge side wall (4213) which are sequentially connected to each other, the feed side wall (4211) is in the shape of a conical surface, the bottom wall (4212) is in the shape of a concave spherical band, the discharge side wall (4213) is in the shape of a convex parabola, and the axial length of the discharge side wall (4213) is greater than the axial length of the feed side wall (4211).

3. The fiber composite material pultrusion tube production equipment according to claim 1, characterized in that: The core mold (42) comprises a mounting and fixing portion (422) and a tube hole forming portion (423); the mounting and fixing portion (422) is arranged at one end of the tube hole forming portion (423); the mounting and fixing portion (422) is square; the tube hole forming portion (423) is cylindrical as a whole; the infiltration groove (421) is arranged on the tube hole forming portion (423); the infiltration and forming mechanism (4) further comprises a core mold mounting seat (43); a core mold mounting hole (431) is arranged on the core mold mounting seat (43); lateral position adjustment mechanisms are arranged on both sides of the core mold mounting hole (431) in the lateral direction, and vertical position adjustment mechanisms are arranged on both sides in the vertical direction.

4. The fiber composite material pultrusion tube production equipment according to claim 3, characterized in that: The lateral position adjustment mechanism comprises a lateral adjustment bolt (432), a lateral driving wheel (433) and a lateral push screw (434); the lateral adjustment bolt (432) is rotatably connected to the core mold mounting seat (43); the outer periphery of the lateral driving wheel (433) is provided with helical teeth meshing with the lateral adjustment bolt (432); a threaded hole matched with the lateral push screw (434) is provided in the middle; the lateral driving wheel (433) is rotatably arranged on the core mold mounting seat (43); the lateral push screw (434) passes through the side wall of the core mold mounting hole (431) and is slidably connected to the core mold mounting seat (43); the vertical position adjustment mechanism comprises a vertical The invention relates to a vertical adjustment screw (435), a movable driving block (436) and a wedge-shaped pad (437); a wall portion of the core mold mounting hole (431) is provided with a wedge-shaped groove; a wedge-shaped strip (4371) is provided at a corresponding position of the wedge-shaped pad (437); the wedge-shaped strip is located in the wedge-shaped groove; a pad driving groove body (4372) is provided on the side of the wedge strip (4371); a driving threaded hole is provided on the movable driving block (436) and is threadedly connected to the vertical adjustment screw (435) through the driving threaded hole; a side driving strip (4361) is provided on the movable driving block (436); and the side driving strip (4361) is slidably provided in the pad driving groove body (4372).

5. The fiber composite material pultrusion tube production equipment according to claim 4, characterized in that: A plurality of the lateral drive wheels (433) and the lateral push screws (434) are provided, and the plurality of lateral drive wheels (433) are provided in one-to-one correspondence with the lateral push screws (434), and the plurality of lateral drive wheels (433) are all meshed with the lateral adjustment bolts (432); a core mold mounting cross bar (11) is provided on the frame (1), and two core mold mounting seats (43) are provided, and the two core mold mounting seats (43) are fixed on opposite sides of the core mold mounting cross bar (11), and the core mold mounting holes (431) pass through the core mold mounting cross bar (11) to communicate with each other.

6. The fiber composite material pultrusion tube production equipment according to claim 1, characterized in that: The fiber introduction mechanism (2) comprises an inner fiber introduction mechanism and a surface fiber introduction mechanism, the inner fiber introduction mechanism comprises a yarn rack (21), a side fiber bundle guide plate (22) and a positioning guide plate (23), the positioning guide plate (23) being fixed to the frame (1) at the end of the pultrusion die hole (411), the positioning guide plate (23) being provided with a plurality of fiber bundle guide holes, the plurality of fiber bundle guide holes being arranged in a circular shape with the center thereof on the axis of the core die (42), the side fiber bundle guide plate (22 ) are arranged between the two sides of the positioning guide plate (23) and the yarn rack (21), and the side fiber bundle guide plate (22) is provided with a plurality of fiber bundle guide holes arranged in an array. The fiber bundles in the fiber bundle roll placed on the yarn rack (21) can be evenly distributed in the pultrusion die hole (411) around the core mold (42) after being guided by the side fiber bundle guide plate (22) and the positioning guide plate (23); the surface fiber introduction mechanism can introduce the surface fiber layer on the inner side and / or outer side of the fiber bundle.

7. The fiber composite material pultrusion tube production equipment according to claim 6, characterized in that: The surface fiber introduction mechanism includes a fiber band mounting frame (24) and a fiber band forming guide (25), wherein the fiber band forming guide (25) is sleeved on the core mold (42), and the fiber band mounting frame (24) is arranged at the periphery of the frame (1) and is arranged opposite to the fiber band forming guide (25). The fiber band forming guide (25) can guide and form the fiber band from the fiber band mounting frame (24) to form an annular surface fiber layer on the inner side or the outer side of the fiber bundle.

8. The fiber composite material pultrusion tube production equipment according to claim 7, characterized in that: The fiber band forming guide (25) comprises a forming ring (251), a first guide wing (252) and a second guide wing (253); the forming ring (251) is sleeved on the core mold (42) outside the pultrusion forming mold (41); the first guide wing (252) and the second guide wing (253) are respectively arranged at different axial positions on opposite sides of an end of the forming ring (251) away from the pultrusion forming mold (41); and the first guide wing (252) is located between the second guide wing and the core mold (42). (253) is located away from the side of the pultrusion forming die (41), the inner ends of the first guide wing (252) and the second guide wing (253) are fixedly connected to the forming ring (251), and the outer ends are inclinedly extended toward the other end of the forming ring (251), and the inlet end of the inner hole of the forming ring (251) is conical, and the outer guide surfaces of the first guide wing (252) and the second guide wing (253) gradually transition from an arc shape at the inner end to a straight line shape at the outer end, and a fiber belt limiting hole is provided at the outer end.

9. The fiber composite material pultrusion tube production equipment according to claim 1, characterized in that: The glue injection mechanism (3) comprises a first raw material barrel (31), a second raw material barrel (32), a first metering pump (33), a second metering pump (34) and a mixer (35); the inlet of the first metering pump (33) is connected to the first raw material barrel (31) through a pipeline, and the outlet is connected to the first inlet of the mixer (35) through a pipeline; the inlet of the second metering pump (34) is connected to the second raw material barrel (32) through a pipeline, and the outlet is connected to the second inlet of the mixer (35) through a pipeline; the outlet of the mixer (35) is connected to the glue injection hole (412); and overflow valves (36) are respectively arranged on the outlet pipelines of the first metering pump (33) and the second metering pump (34); the overflow ports of the overflow valves (36) are connected to the corresponding first raw material barrel (31) or second raw material barrel (32).

10. The fiber composite material pultrusion tube production equipment according to claim 9, characterized in that: A reflux three-way valve (37) and a cleaning three-way valve (38) are respectively provided on the pipelines of the first inlet and the second inlet of the mixer (35); the reflux three-way valve (37) is connected between the outlet of the first metering pump (33) or the second metering pump (34), the cleaning three-way valve (38) and the first raw material barrel (31) or the second raw material barrel (32); and the cleaning three-way valve (38) is connected between the reflux three-way valve (37), the cleaning liquid container and the first inlet or the second inlet of the mixer (35).

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