Fiber weaving pultrusion needling suture system

Abstract

The invention relates to the technical field of pultrusion pipeline manufacturing, and discloses a fiber weaving pultrusion needling sewing system which comprises a pneumatic device 200, a PLC (programmable logic controller) 300, a yarn guide frame 400, a yarn frame 500 and at least one set of needling sewing assembly 100. The needling sewing assembly 100 is used for conducting axial and one-way sewing on multiple layers of fiber reinforcement bodies which are arranged outside the core mold 600 in a sleeving mode and move continuously in the axial direction through multiple sets of one-way needling sewing unit using yarn 119 in the circumferential direction. The pneumatic device 200 is used for driving needling motion of the needling sewing assembly 100, the PLC 300 is used for controlling the frequency of needling sewing motion of the needling sewing assembly, the yarn frame 500 is used for fixing a spindle wound with yarn 119, and the yarn guide frame 400 is used for guiding the yarn to the needling sewing assembly 100. Axial and unidirectional multi-group needling sewing is carried out on the multi-layer fiber reinforced body in the existing continuous production process through the needling sewing assembly, so that the produced multi-layer fiber reinforced body forms three-dimensional interlayer interconnection, and the overall tensile mechanical property of the multi-layer fiber reinforced body is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of pultruded pipe manufacturing, and in particular to a fiber braided pultruded needle suturing system. Background Art

[0002] At present, the existing continuous braiding and winding pultrusion technology for pultruded pipes is composed of an inner braided layer, an intermediate winding layer, and an outer braided layer. The pipe is formed by wrapping it layer by layer on a core mold. The fiber reinforcement after being impregnated with glue is pulled into the mold by a traction machine, and is pultruded and cured under the action of heating outside the mold. From the cross-section of the pipe produced by the above technology, the inner and outer braided layers and the intermediate winding layer are only connected into one body by thermosetting resin. There is no high-strength reinforcing fiber connection between the three-layer fiber structure. Therefore, the shear and tear resistance of the pipe is poor, and it also affects the pressure resistance of the pipe. Therefore, there is an urgent need for a device that can connect the three-layer fiber structure to each other to improve its overall strength.

[0003] Prior art 1:

[0004] The continuous braided winding pultruded pipes in the common fiber braided pultruded pipes on the market are mainly composed of an inner braided layer, an intermediate winding layer and an outer braided layer, which are formed in one step through the thermosetting resin pultrusion technology. The inner and outer layers are formed by online braiding of glass fibers or by wrapping pre-woven fabrics on a core mold, and the middle winding layer is formed by axial laying and radial rotation winding. The three-layer structure after overall impregnation is heated and cured by a pultrusion die, so that the reinforcement formed by the three layers of fibers and the resin become one.

[0005] The defects of prior art 1 are as follows:

[0006] The pipe produced by the continuous braiding, winding and pultrusion process has certain impact resistance and bending resistance through the braiding of the inner and outer layers and the winding of the middle layer. However, from the cross section of the pipe, the inner and outer braided layers and the middle winding layer are only connected into one by thermosetting resin, and there is no high-strength reinforcing fiber connection between the three layers. Therefore, the shear and tear resistance of the pipe is poor, and it also affects the pressure resistance of the pipe. Summary of the invention

[0007] In order to overcome or alleviate one or more of the above technical problems, the purpose of the present invention is to provide a fiber weaving, pultrusion, needle suturing system, which adds needle suturing equipment on the basis of the existing combined layered fiber reinforcement manufacturing process to solve the problem of no high-strength reinforcing fiber connection between the three layers, so that the formed woven fabric as a whole forms an integrated three-dimensional structure.

[0008] The present invention provides the following technical solutions:

[0009] A fiber weaving pultrusion needle suturing system comprises a pneumatic device (200), a PLC controller (300), a yarn guide frame (400), a yarn frame (500) and at least one set of needle suturing components (100); the needle suturing components (100) are used to axially and unidirectionally suturing a multi-layer fiber reinforcement body that is sleeved outside a core mold (600) and moves continuously in an axial direction by using a plurality of sets of unidirectional needle suturing units and yarn (119); the pneumatic device (200) is used to drive the needle suturing movement of the needle suturing component (100), the PLC controller (300) is used to control the frequency of the needle suturing action of the needle suturing component, the yarn frame (500) is used to fix a spindle wound with the yarn (119), and the yarn guide frame (400) is used to guide yarn to the needle suturing component (100).

[0010] According to some embodiments, the acupuncture suturing assembly includes a cylinder positioning ring (101) and a suture needle positioning ring (102) inside the cylinder positioning ring (101), both of which are circular rings, and the centers of the two circular rings coincide with the center of the core mold (600) inside the suture needle positioning ring (102), and the cylinder positioning ring (101) and the suture needle positioning ring (102) are fixedly connected by a plurality of circumferentially evenly distributed cylinder positioning plates (103); the unidirectional acupuncture suturing unit is correspondingly arranged between the grooves on the cylinder positioning plate (103) and the outer wall of the core mold (600), and performs a corresponding plurality of groups of axial unidirectional suturing on the multi-layer fiber reinforcement.

[0011] According to some embodiments, a single unidirectional acupuncture suturing unit comprises a suturing needle (106) driven by a cylinder (105) and a yarn locking device (113) corresponding to the suturing needle (106), and the tip of each suturing needle (106) is provided with a pressing plate (110) connected by an adjustable pressing plate connector (107), and the pressing plate (110) is provided with a needle through hole (111) for allowing the suturing needle (106) to pass through;

[0012] The cylinder (105) is fixed to the cylinder positioning ring (101) via the cylinder positioning plate (103), and a plurality of corresponding distribution valves (112) are synchronously and evenly distributed on the cylinder positioning ring (101); each cylinder (105) drives the suture needle (106) radially inward, and the suture needles (106) are evenly distributed on the suture needle positioning ring (102);

[0013] The yarn locking device (113) is arranged in a groove on the outer wall of the core mold (600), and it locks the yarn (119) that penetrates into the fiber reinforcement through the needle hole of the suture needle (106) in one direction on the inner side of the fiber reinforcement; the yarn locking device (113) is arranged corresponding to the suture needle (106).

[0014] According to some embodiments, the yarn locking device (113) includes a bottom plate (113-12) fixed to the bottom of the groove of the outer wall of the core mold (600), and the bottom plate (113-12) is fixed with a first fixed column (113-6), a second fixed column (113-7) and a third fixed column (113-8) arranged in a straight line, and the core mold connecting plate (113-5) is fixed to the notch of the groove of the core mold (600); the fiber reinforcement is located on the core mold connecting plate (113-5) 13-5) and the pressure plate (110); a vertical groove is provided on the inner wall of the first fixing column (113-6) toward the second fixing column (113-7); the trigger platform (113-2) is strip-shaped and can move up and down in the vertical groove; a first return spring (113-9) is provided at the bottom of the trigger platform (113-2); a protruding linkage step (113-3) is provided at the lower part thereof toward the second fixing column (113-7); the bottom of the inverted L-shaped normally closed locking hook (113-1) is hinged to the The third fixed column (113-8), the end of the normally closed locking hook (113-1) is provided with a hook, and is always in a closed state through a third reset spring (113-11); the linkage rod (113-4) is hinged to the top of the middle second fixed column (113-7), and is always in a horizontal position through a second reset spring (113-10); the suture needle (106) presses down the trigger platform (113-2), and one side of the linkage rod (113-4) is pressed down by the linkage step (113-3) , the other side is linked to lift and release the bottom of the normally closed locking hook (113-1), and the normally closed locking hook (113-1) returns to the normally closed state, hooking the yarn (119); then the suture needle (106) is pulled up, and the downward pressure side of the linkage rod (113-4) is lifted up by the linkage step (113-3) and then released, restoring the permanent horizontal position of the linkage rod (113-4), and the yarn (119) will not leave the side of the fiber reinforcement as the suture needle (106) is withdrawn.

[0015] According to some embodiments, the cylinder positioning plate (103) is provided with a cylinder adjustment groove (104) for adjusting the radial distance of acupuncture.

[0016] According to some embodiments, the pressure plate connector (107) is provided with a pressure plate adjustment groove (109) for synchronously adjusting the radial distance of the suture needle (106).

[0017] According to some embodiments, when the acupuncture suturing components (100) are in multiple groups, they are staggered at a certain angle in the axial direction of the core mold (600).

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a fiber weaving pultrusion needle suturing system, wherein a plurality of groups of annular evenly distributed unidirectional needle suturing units are used for unidirectional locking of the suture yarn penetrating one side of the multi-layer fiber reinforcement when suturing the multi-layer fiber reinforcement, thereby ensuring that the yarn is fixed in the multi-layer fiber reinforcement.

[0020] The fiber braiding pultrusion needle suturing system introduces needle suturing technology into the existing braiding winding pultrusion process. Specifically, a needle suturing assembly is arranged in the braiding winding pultrusion production line. The needle suturing assembly consists of a cylinder positioning ring, a suturing needle positioning ring, a cylinder positioning plate, a cylinder, a suturing needle, a distribution valve, a suturing needle, a yarn locking device, a core mold connecting plate, and a pressing plate. The cylinder positioning plate is provided with a cylinder adjustment groove for adjusting the radial needling distance of the suturing needle, and the corresponding pressing plate connecting piece is provided with a pressing plate adjustment groove to meet the production requirements of products of different sizes. The suturing needle is provided with a needle hole for guiding the suturing yarn to pass through the fiber reinforcement and to be linked with the corresponding yarn locking device. The yarn locking device is provided with a triggering platform, a linkage rod, and a locking hook. When the suturing needle reaches the set position, the yarn locking device is triggered to synchronously perform an alternating hooking and releasing action to realize continuous suturing of the fiber reinforcement along the axial direction. Then, more than one set of suturing needles are arranged in an annular direction to realize the three-dimensional connection of the fiber reinforcement in the axial and radial directions.

[0021] The multi-layer fiber reinforcement produced forms three-dimensional interlayer interconnection, which greatly improves its overall tensile mechanical properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 An axonometric view of a fiber braiding, pultrusion, needle punching and suturing system provided in an embodiment of the present invention.

[0023] Figure 2 A front view of a fiber braiding, pultrusion, needle punching and suturing system provided by an embodiment of the present invention.

[0024] Figure 3 A right side view of the fiber weaving, pultrusion, needle punching and suturing system provided in an embodiment of the present invention.

[0025] Figure 4 An axonometric view of a needle suturing assembly provided in accordance with an embodiment of the present invention.

[0026] Figure 5 A schematic structural diagram of a needle suturing assembly provided in an embodiment of the present invention.

[0027] Figure 6 A schematic diagram of the partial structure of the suturing of the acupuncture suturing assembly provided in an embodiment of the present invention.

[0028] Figure 7 A schematic diagram of a cylinder adjustment slot of a needle suturing assembly provided in an embodiment of the present invention.

[0029] Figure 8 A schematic diagram of a pressure plate of a needle suturing assembly provided in an embodiment of the present invention.

[0030] Fig. 9 A schematic diagram of a yarn locking device of a needle suture assembly provided in an embodiment of the present invention.

[0031] Fig.10 A schematic diagram of a single-step acupuncture suturing process on a fiber reinforcement provided in an embodiment of the present invention.

[0032] Fig.11 An axial cross-sectional view of a fiber reinforcement provided in an embodiment of the present invention being pulled and moved and simultaneously stitched with yarns.

[0033] Fig.12 A schematic diagram of a plurality of staggered needle suturing assemblies arranged axially on a core mold according to an embodiment of the present invention.

[0034] In the figure:

[0035] Acupuncture suture assembly 100; cylinder positioning ring 101; suture needle positioning ring 102; cylinder positioning plate 103; cylinder adjustment slot 104; cylinder 105; suture needle 106; pressure plate connector 107; wire hole 108; pressure plate adjustment slot 109; pressure plate 110; puncture needle through hole 111; distribution valve 112; yarn locking device 113; normally closed locking hook 113-1, trigger platform 113-2, linkage step 113-3 ; Linking rod 113-4; Core mold connecting plate 113-5; First fixed column 113-6, second fixed column 113-7, third fixed column 113-8, first return spring 113-9; Second return spring 113-10; Third return spring 113-11; Bottom plate 113-12; Yarn 119; Pneumatic device 200; PLC controller 300; Yarn guide frame 400; Yarn frame 500; Core mold 600. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with the embodiments and drawings, but it should be understood that the embodiments and drawings are only used to exemplify the present invention and do not constitute any limitation on the protection scope of the present invention. All reasonable changes and combinations within the scope of the inventive concept of the present invention fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "set", "install", "connected", 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] Example 1

[0040] like Figures 1 to 3 The fiber weaving, pultrusion and needle suturing system provided in this embodiment is arranged between the weaving machine and the forming mold of the pultrusion production line, and includes a needle suturing assembly 100, a pneumatic device 200, a PLC controller 300, a yarn guide frame 400 and a yarn frame 500. The needle suturing assembly 100 is used to sew the multi-layer fiber reinforcement sleeved outside the core mold 600, the pneumatic device 200 is used to provide driving force to the cylinder in the needle suturing assembly, the PLC controller 300 is used to adjust the frequency of the needle suturing action of the needle suturing assembly, the yarn frame 500 is used to fix the spindle of the winding yarn 119, and the yarn guide frame 400 is used to guide the yarn. The core mold 600 is inserted into the needle suturing assembly 100 along the axial direction.

[0041] The needle suturing assembly 100 is provided with a plurality of suturing needles 106 arranged in a circular direction around the core mold 600. A groove is provided at the position of the core mold 600 corresponding to the movement trajectory direction of the suturing needles 106, so as to reserve space for the suturing needles 106 to penetrate the fiber reinforcement. Figure 4 As shown, a yarn locking device 113 is correspondingly provided.

[0042] like Figures 5-6The needle suture assembly 100 includes a cylinder positioning ring 101, a suture needle positioning ring 102, a cylinder positioning plate 103, a cylinder 105, a suture needle 106, a distribution valve 112 and a yarn locking device 113. The cylinder positioning ring 101 and the suture needle positioning ring 102 are concentric rings of different diameters, which are coaxially arranged on the outside of the core mold 600. The suture needle positioning ring 102 is an inner ring. Eight cylinders 105 are evenly distributed on the cylinder positioning ring 101 in an annular direction. A plurality of corresponding number of distribution valves 112 are synchronously and evenly arranged on the cylinder positioning ring 101. The distribution valve 112 is used to balance the pressure of multiple cylinders to achieve synchronization of the actions of multiple sets of suture assemblies. The number of cylinders 105 can be multiple, and the more the number, the greater the overall suture density, and vice versa. The suture density is proportional to the strength of the fiber braid.

[0043] In this embodiment, eight groups of suture needles 106 connected to the cylinder 105 inwardly radially are arranged on the suture needle positioning ring 102 and are evenly distributed radially around the core mold 600. Figure 6 The suture needle 106 is correspondingly provided with a radial pressing plate connector 107 , and the lower end of the pressing plate connector 107 is vertically connected to a pressing plate 110 , and a puncture needle through hole 111 is provided in the pressing plate 110 .

[0044] like Figure 6 The yarn locking device 113 is located below the pressing plate 110. The yarn locking device 113 is circumferentially arranged in the groove of the core mold 106, and corresponds to the suture needle 106 one by one. Specifically, a core mold connecting plate 113-5 is arranged between the yarn locking device 113 and the pressing plate 110, on which a needle through hole is provided, and is fixed to the core mold by bolts. The core mold connecting plate 113-5 allows the fiber reinforcement to pass through the step at the groove of the core mold 600 normally during the traction operation, and forms an interaction force with the pressing plate 110, positioning the fiber reinforcement within the puncture range of the suture needle 106, ensuring that the suture needle 106 penetrates the woven fiber layer.

[0045] like Figure 7 The cylinder positioning plate 103 is provided with a cylinder adjusting groove 104 for adjusting the radial distance of acupuncture to meet the production of products of different sizes.

[0046] like Figure 8 The suture needle 106 is synchronously provided with a pressing plate connector 107, which is provided with a wire hole 108 and a pressing plate adjustment slot 109, and the pressing plate adjustment slot 109 is used to coordinate the synchronous adjustment of the radial distance of the suture needle 106. The pressing plate 110 is provided with a puncture needle through hole 111.

[0047] like Fig. 9A yarn locking device 113 is provided corresponding to the radial movement direction of the suture needle. The yarn locking device 113 cooperates with the suture needle arranged oppositely through a linkage step, so that the normally closed locking hook completes the hooking and releasing action during the production process, so as to achieve the purpose of leaving the inserted yarn in the fiber braided body. The yarn locking device 113 includes a bottom plate 113-12 fixed to the bottom of the core mold groove, a first fixed column 113-6, a second fixed column 113-7 and a third fixed column 113-8 arranged in a row fixed to the bottom plate 113-12, and a normally closed locking hook 113-1, a trigger platform 113-2, a linkage step 113-3, a linkage rod 113-4, a first return spring 113-9, a second return spring 113-10 and a third return spring 113-11.

[0048] The first fixed column 113-6 is provided with a groove inward, the triggering platform 113-2 is a strip, and can move up and down in the groove. The first reset spring 113-9 is fixed at the bottom, and the lower part is provided with a linkage step 113-3 toward the second fixed column 113-7. The bottom of the inverted L-shaped normally closed locking hook 113-1 is hinged to the third fixed column 113-8, and the end is provided with a hook, which is always in a closed state through the third reset spring 113-11; the linkage rod 113-4 is hinged to the top of the middle second fixed column 113-7, and is always in a horizontal position through the second reset spring 113-10. The first, second, and third fixed columns and the bottom plate 113-12 are integrally formed or pre-assembled into one, and the core mold connecting plate 113-5 is fixed to the outer wall between the core mold grooves, that is, the groove notch, by bolts. The first function is to connect the core mold groove so that the fiber reinforcement can pass through the step at the groove smoothly, and the second function is to cooperate with the pressure plate 110 to position the fiber reinforcement within the puncture range of the needle.

[0049] like Fig.10 , the suture needle 106 presses down the trigger platform 113-2, one side of the linkage rod 113-4 is pressed down by the linkage step 113-3, and the other side is linked to lift and release the bottom of the normally closed locking hook 113-1, and the normally closed locking hook 113-1 returns to the normally closed state and hooks the yarn 119; then the suture needle 106 is retracted, and the downward pressed side of the linkage rod 113-4 is lifted up and released by the linkage step 113-3, restoring the permanent horizontal position of the linkage rod 113-4, and the yarn 119 will not leave the lower side of the fiber reinforcement as the suture needle 106 is retracted.

[0050] Specifically, the suture yarn passes through the needle hole of the suture needle 106 through the wire hole, and is guided by the suture needle 106 to pierce and penetrate the fiber reinforcement. The normally closed locking hook 113-1 hooks the suture yarn that penetrates the fiber reinforcement, so that it continues to maintain the penetration state and will not withdraw with the suture needle 106.

[0051] like Fig.10 ,in Fig.10 .a~10.e are respectively Fig.10 .A~10.E correspond to each other up and down, respectively depicting the process of suturing and withdrawing the needle in the axonometric direction and the lateral direction. The cylinder 105 pushes the suture needle 106 to perform radial penetration, and guides the suture yarn 119 to pass through the fiber reinforcement, reaching the set position b and contacting the trigger platform 113-2. The trigger platform 113-2 transmits the continuous pressure to the linkage rod 113-4, and the linkage rod 113-4 is lifted and releases the normally closed locking hook 113-1. The suture needle 106 continues to penetrate to the set position c, and the linkage rod 113-4 exceeds the pressure range of the linkage step and returns to the initial position through the second return spring 113-10. The normally closed locking hook 113-1 synchronously returns to the normally closed state through the third return spring 113-11 to hook the suture yarn.

[0052] When the cylinder 105 drives the suture needle 106 to withdraw, the trigger platform 113-2 synchronously performs a reset motion through the first reset spring 113-9, and the linkage rod 113-4 performs a reverse avoidance motion driven by the linkage step. After the trigger platform 113-2 returns to the initial position, the linkage rod 113-4 exceeds the pressure range of the linkage step and returns to the initial position through the second reset spring 113-10. The suture yarn is hooked by the normally closed locking hook 113-1 and will not leave the fiber reinforcement body as the suture needle 106 withdraws.

[0053] In the next round of acupuncture, the suture needle 106 to Fig.10 .b action lifts the normally closed locking hook 113-1, and the normally closed locking hook 113-1 releases the suture yarn hooked in the previous round of action, and the suture needle 106 to Fig.10 .c action hooks the suture yarn inserted in this round of action, completes the alternating thread replacement action in the suture operation, and makes the three-layer fiber reinforcement body undergo continuous needle suture along the axial direction.

[0054] like Fig.11 The core mold connecting plate 113-5 and the pressing plate 110 are respectively arranged on both sides of the fiber reinforcement body, and the fiber reinforcement body is positioned within the puncture range of the suture needle 106 through the interaction force.

[0055] The fiber reinforcement is moved axially in the traction direction at a set speed through the traction equipment, and the punctured suture yarn is driven to move synchronously. The suture needle 106 performs radial penetration according to the frequency set by the PLC controller 300, and the yarn locking device 113 performs alternating hooking and releasing yarn actions synchronously with the repeated puncture of the suture needle 106. Through the coordination of the traction speed and the penetration frequency, the suture yarn continuously sews the outer braided layer, the middle winding layer, and the inner braided layer along the axial direction according to the designed spacing, forming an overall three-dimensional structure of the fiber reinforcement.

[0056] Example 2

[0057] In this embodiment, the acupuncture suture assembly 100 is provided with other sets of cylinders 105 arranged circumferentially on the cylinder positioning ring 101, at least one set. It is also possible to axially stagger multiple sets of acupuncture suture assemblies 100, such as Fig.12 In the figure, three sets of acupuncture suture assemblies 100 are arranged alternately at a certain angle to achieve the adjustment of radial suture density.

[0058] The above embodiments are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fiber braiding, pultrusion, needle punching and suturing system, characterized in that: It comprises a pneumatic device (200), a PLC controller (300), a yarn guide frame (400), a yarn frame (500) and at least one set of acupuncture suturing components (100); The needle suturing assembly (100) is used to axially and unidirectionally suturing a multi-layer fiber reinforcement that is sleeved outside a core mold (600) and moves continuously in an axial direction by using a plurality of groups of unidirectional needle suturing units and yarns (119) in the circumferential direction; The pneumatic device (200) is used to drive the needling movement of the needling suturing component (100), the PLC controller (300) is used to control the frequency of the needling suturing action of the needling suturing component, the yarn rack (500) is used to fix the spindle wound with the yarn (119), and the yarn guide rack (400) is used to guide the yarn to the needling suturing component (100).

2. The fiber braiding, pultrusion, needle suturing system according to claim 1, characterized in that: The acupuncture suturing assembly comprises a cylinder positioning ring (101) and a suturing needle positioning ring (102) both of which are circular, the centers of the two rings coincide with the center of the core mold (600) in the suturing needle positioning ring (102), and the cylinder positioning ring (101) and the suturing needle positioning ring (102) are fixedly connected by a plurality of cylinder positioning plates (103) uniformly distributed in the circumferential direction; the unidirectional acupuncture suturing unit is correspondingly arranged between the grooves on the cylinder positioning plate (103) and the outer wall of the core mold (600), and performs a corresponding plurality of groups of axial unidirectional suturing on the multi-layer fiber reinforcement.

3. The fiber braiding, pultrusion, acupuncture and suturing system according to claim 2, characterized in that: A single unidirectional needle suturing unit comprises a suturing needle (106) driven by a cylinder (105) and a yarn locking device (113) corresponding to the suturing needle (106); the tip of each suturing needle (106) is provided with a pressing plate (110) connected via an adjustable pressing plate connector (107); the pressing plate (110) is provided with a needle through hole (111) for the suturing needle (106) to pass through; The cylinder (105) is fixed to the cylinder positioning ring (101) via the cylinder positioning plate (103), and a plurality of corresponding distribution valves (112) are synchronously and evenly distributed on the cylinder positioning ring (101); each cylinder (105) drives the suture needle (106) radially inward, and the suture needles (106) are evenly distributed on the suture needle positioning ring (102); The yarn locking device (113) is arranged in a groove on the outer wall of the core mold (600), and it locks the yarn (119) that penetrates into the fiber reinforcement through the needle hole of the suture needle (106) in one direction on the inner side of the fiber reinforcement; the yarn locking device (113) is arranged corresponding to the suture needle (106).

4. The fiber braiding, pultrusion, needle suturing system according to claim 3, characterized in that: The yarn locking device (113) comprises a bottom plate (113-12) fixed to the bottom of the groove of the outer wall of the core mold (600); a first fixing column (113-6), a second fixing column (113-7) and a third fixing column (113-8) arranged in a straight line are fixed on the bottom plate (113-12); the core mold connecting plate (113-5) is fixed to the notch of the groove of the core mold (600); the fiber reinforcement is located between the core mold connecting plate (113-5) and the The first fixing column (113-6) is provided with a vertical groove on the inner wall facing the second fixing column (113-7); the trigger platform (113-2) is strip-shaped and can move up and down in the vertical groove; the bottom of the trigger platform (113-2) is provided with a first return spring (113-9); the lower part of the trigger platform (113-2) is provided with a protruding linkage step (113-3) facing the second fixing column (113-7); the bottom of the inverted L-shaped normally closed locking hook (113-1) is hinged to the third fixing column (113-8), a hook is provided at the end of the normally closed locking hook (113-1), which is always in a closed state through a third return spring (113-11); a linkage rod (113-4) is hinged to the top of the middle second fixed column (113-7), and is always in a horizontal position through a second return spring (113-10); the suture needle (106) presses down the trigger platform (113-2), and one side of the linkage rod (113-4) is pressed down by the linkage step (113-3), and the other side One side is linked to lift and release the bottom of the normally closed locking hook (113-1), and the normally closed locking hook (113-1) returns to the normally closed state, hooking the yarn (119); then the suture needle (106) is pulled up, and the downward pressure side of the linkage rod (113-4) is lifted up by the linkage step (113-3) and then released, restoring the permanent horizontal position of the linkage rod (113-4), and the yarn (119) will not leave the side of the fiber reinforcement as the suture needle (106) is withdrawn.

5. The fiber braiding, pultrusion, acupuncture and suturing system according to claim 3, characterized in that: The cylinder positioning plate (103) is provided with a cylinder adjustment groove (104) for adjusting the radial distance of acupuncture.

6. The fiber braiding, pultrusion, needle suturing system according to claim 3, characterized in that: The pressure plate connecting piece (107) is provided with a pressure plate adjusting groove (109) for synchronously adjusting the radial distance of the suture needle (106).

7. The fiber braiding, pultrusion, needle punching and suturing system according to any one of claims 1 to 6, characterized in that: When there are multiple groups of the acupuncture suturing components (100), they are staggered at a certain angle in the axial direction of the core mold (600).

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