A continuous fiber 3D printing-winding composite molding device

Abstract

The present invention provides a continuous fiber 3D printing-winding composite molding device, including a frame, a 3D printing mechanism and a continuous fiber winding mechanism are arranged on the frame, a mounting portion is arranged on the top of the frame, the mounting portion is used to connect a motion control device (the motion control device can adopt a three-dimensional moving mechanism driven by a servo motor, or a robot), and the motion control device is used to control the frame and its connecting parts as a whole to realize rotation, translation, and lifting and lowering actions; a 3D printing portion is arranged at the left end of the frame, a fiber winding portion is arranged at the right end of the frame, and a printing fiber material placement portion and a winding fiber material placement portion are arranged inside the frame, and the fiber material is fed, sprayed, sheared and re-fed through the 3D printing portion, and the fiber material is wound on the core mold through the fiber winding portion. The present invention cleverly integrates the 3D printing function with the continuous fiber winding function, so that the 3D printing process and the continuous fiber winding process can be quickly and flexibly switched, and the efficient and high-performance production / manufacturing of typical ring groove rotating parts can be realized in a low-cost manner.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber reinforced composite material molding equipment, and in particular to a continuous fiber 3D printing-winding composite molding device. Background Art

[0002] The lightweight, molding efficiency and mechanical properties of aircraft components are key issues in the development of aircraft equipment. The emergence of lightweight and high-strength composite materials with carbon fiber reinforced composite materials as the core provides a new way for the design and manufacture of aerospace equipment. At present, there are many ways to form composite materials, among which: composite winding technology can realize the rapid molding of regular rotating bodies, and can match both dry and wet molding methods, but it cannot realize winding molding for non-rotating bodies and special-shaped structures; automatic wire laying technology is suitable for the molding of various complex curved surface structures, but prepreg has a critical turning radius and cannot mold complex curved surfaces with a small curvature radius; continuous fiber 3D printing technology can adapt to various complex structural forms, but its molding efficiency is very low. Generally, the continuous fiber 3D printing speed is about 2mm / s-5mm / s, which limits the large-scale application of this technology in the molding of aircraft equipment.

[0003] In recent years, Beijing Jike Guochuang Lightweight Science Research Institute Co., Ltd. has developed a 3D printing and investment casting production line for complex special-shaped cross-section carbon fiber pipe fittings, including a 3D printer, a first robotic arm, an oiling device, a second robotic arm, a filament winding machine, a third robotic arm, a heating furnace, a fourth robotic arm and a conveyor belt. The 3D printer uses the core mold material of complex special-shaped cross-section carbon fiber pipe fittings for 3D printing, and uses a filament winding vehicle to continuously wind the carbon fiber prepreg onto the core mold. Although this solution sets the 3D printer and the filament winding machine on the same production line, it is essentially a filament winding and investment casting molding method for the product, and it uses multiple sets of robotic arms and transmission lines, and the facility cost is very high.

[0004] The annular groove rotating part of the present invention refers to a structural part with an annular groove on the rotating part made of fiber-reinforced composite materials. For typical annular groove rotating parts of aircraft, the processing process must ensure both high processing efficiency and high mechanical properties after processing. Relying on a single molding method alone cannot take into account both the molding efficiency and mechanical properties of such components. The use of continuous fiber 3D printing and winding composite molding is expected to become an effective way to solve this technical problem.

[0005] In addition, the existing 3D printing equipment and continuous fiber winding equipment are two completely independent sets of equipment, and the cost of both is relatively high. How to integrate these two sets of equipment into one and realize the efficient and high-performance production / manufacturing of typical annular groove rotating parts in a low-cost manner is a technical challenge faced by this field. Summary of the invention

[0006] The purpose of the present invention is to provide a continuous fiber 3D printing-winding composite molding device, which can at least achieve efficient and high-performance production / manufacturing of typical annular groove rotating parts in a low-cost manner.

[0007] To achieve the aforementioned objectives, the present invention adopts the following technical solutions.

[0008] A continuous fiber 3D printing-winding composite molding device comprises a frame, on which a 3D printing mechanism and a continuous fiber winding mechanism are arranged, a mounting portion is arranged on the top of the frame, the mounting portion is used to connect a motion control device (the motion control device can adopt a three-dimensional moving mechanism driven by a servo motor, or a robot), the motion control device is used to control the frame and its connecting parts as a whole to realize rotation, translation and lifting movements; a 3D printing portion is arranged at the left end of the frame, a fiber winding portion is arranged at the right end of the frame, a printed fiber material placement portion and a wound fiber material placement portion are arranged inside the frame, the 3D printing portion is used to realize feeding, spraying, shearing and re-feeding of the fiber material, and the fiber winding portion is used to realize winding the fiber material on a core mold.

[0009] Furthermore, the fiber winding part is connected to a rotation control part, and the rotation control part is used to control the fiber winding part and the wound fiber material placement part to rotate synchronously.

[0010] Furthermore, the throat axis of the 3D printing part is coaxial with the rotation centerline of the fiber winding part. Such an arrangement can realize the free switching between the 3D printing process and the winding process more efficiently and accurately.

[0011] Furthermore, the 3D printing unit includes a print head mounting plate, which is mounted on the left frame of the frame. The print head mounting plate is provided with a print fiber material re-feeding mechanism, a print fiber material shearing mechanism, a throat with a print nozzle, and a preheating component. The throat is arranged horizontally and passes through the heat dissipation component and the preheating component; the print fiber material re-feeding mechanism includes a slide cylinder, the front end of the telescopic rod of the slide cylinder is connected to a re-feeding driven roller that can rotate, a re-feeding active roller is arranged directly below the re-feeding driven roller, the re-feeding driven roller is arranged parallel to the re-feeding active roller, and the gap between the re-feeding driven roller and the re-feeding active roller is for the print fiber material to pass through, the re-feeding driven roller is connected to a servo motor, the re-feeding driven roller is driven to rotate by the servo motor, and the re-feeding driven roller is driven downward by the slide cylinder.

[0012] Furthermore, the printing fiber material shearing mechanism includes a cylinder fixedly mounted on a cylinder mounting plate, the front end of the telescopic rod of the cylinder is connected to a tool, a shearing support is arranged on the cylinder mounting plate (the shearing support can be a plate body or a rod body, or a tool), the shearing support and the tool in the initial state are respectively located on both sides of the printing fiber material in the throat, the printing fiber material is sheared close to or against the side wall of the shearing support, and the cylinder action drives the tool to rush to the side wall of the shearing support to achieve the shearing of the printing fiber material. In the 3D printing processing stage, when shearing is required, the cylinder drives the tool to move linearly to cut the shearing support, and the printing fiber material (i.e., the fiber prepreg tape) is sheared in the middle of the heat dissipation block. After shearing, the servo motor drives the re-feeding active roller to rotate, and the slide cylinder drives the re-feeding driven roller to move downward to press the printing fiber material on the re-feeding active roller, and the printing fiber material is re-sent into the throat by friction, and printing continues after preheating.

[0013] Furthermore, the shearing support and the cutter are arranged between adjacent heat sinks of the heat dissipation assembly, and the preheating assembly, the heat dissipation assembly, the printing fiber material re-feeding mechanism, and the print head mounting plate are arranged in sequence from left to right; the cylinder is arranged below the heat dissipation assembly, the slide cylinder is arranged above the re-feeding active roller, and the servo motor is arranged behind the print head mounting plate.

[0014] Furthermore, the fiber winding part includes a first side plate and a second side plate arranged at intervals and in parallel, the first side plate and the second side plate are fixed to the right side wall of the seat plate, the seat plate is fixedly connected to the cylinder, and a large pulley is arranged on the cylinder; a laser heater and a tension sensor are arranged on the first side plate and the second side plate, a first roller, a second roller, and a third roller are arranged between the first side plate and the second side plate, the first roller, the second roller, and the third roller are arranged at intervals from left to right and parallel to each other, and a yarn thinning component is arranged between the second roller and the third roller; the seat plate has a through hole; the wound fiber material during operation passes through the through hole and is guided by the rollers, heated by the laser heater, and the tension is detected by the tension sensor.

[0015] Furthermore, the rotation control unit includes a second servo motor, a reducer, a large transmission gear, a small transmission gear, a transmission shaft, and a small pulley which are arranged at the bottom of the frame and connected in sequence. The small pulley is connected to the large pulley through a belt. After the second servo motor is turned on, it ultimately drives the fiber winding unit to rotate as a whole.

[0016] Further, the printing fiber material placement part includes a first material tray, a fourth roller, a fifth roller, and a sixth roller that match each other, and both ends of the fourth roller, the fifth roller, and the sixth roller are fixedly connected to the first vertical plate of the front and rear frames of the frame, and a circular through hole is provided in the middle of the left plate of the first vertical plate; the winding fiber material placement part includes a second material tray, a seventh roller, an eighth roller, and a ninth roller that match each other, and both ends of the seventh roller, the eighth roller, and the ninth roller are fixedly connected to the second vertical plates of the front and rear frames of the frame, and a circular through hole is provided in the middle of the right side plate of the second vertical plate, and the right side plate is fixedly connected to the cylinder, and a turntable is sleeved on the cylinder, and the turntable is installed on the right frame plate of the frame; the second vertical plate, the right side plate, the seventh roller, the eighth roller, the ninth roller, the second material tray, the tray body, the cylinder body, the rotating part of the turntable, the large pulley, and the seat plate can rotate synchronously.

[0017] Furthermore, the seventh roller and the eighth roller are arranged side by side at the same height, the ninth roller is located below the seventh roller, and the wound fiber material passes through the top of the seventh roller and the eighth roller at the same time; the fourth roller and the fifth roller are also arranged side by side at the same height, and the sixth roller is located below the fourth roller.

[0018] Furthermore, the second material tray is connected to the second motor, and the second material tray is driven to rotate by the second motor. The second motor and the tension tester matching the tension sensor are connected to the controller. The processor of the controller implements the following steps / functions when executing its program: when the tension value fed back by the tension sensor is greater than the tension threshold interval, the second motor is controlled to slow down by a preset amount until the tension value is within the tension threshold interval, and then the second motor is controlled to maintain the speed and continue to run; when the tension value fed back by the tension sensor is less than the tension threshold interval, the second motor is controlled to accelerate by a preset amount until the tension value is within the tension threshold interval, and then the second motor is controlled to maintain the speed and continue to run.

[0019] The present invention has the following beneficial effects:

[0020] 1. The continuous fiber 3D printing-winding composite molding device provided by the present invention skillfully integrates the 3D printing function with the continuous fiber winding function, so that the 3D printing process and the continuous fiber winding process can be switched quickly and flexibly, and the efficient and high-performance production / manufacturing of typical annular groove rotating parts can be achieved in a low-cost manner;

[0021] 2. The continuous fiber 3D printing-winding composite molding device provided by the present invention has a simple structure and occupies a small space. The fiber arrangement angle can be changed at will, and multi-directional weaving can be achieved. In the continuous fiber winding process, the winding fiber material can be kept flat to avoid twisting of the winding fiber material. The tension of the winding fiber material during the conveying process can be ensured to be consistent and conveniently controllable, and is particularly suitable for the molding of thermoplastic prepreg fiber materials;

[0022] 3. The solution of the present invention can not only solve the common problem of high-efficiency and high-performance molding of typical ring groove rotating parts, but also can quickly produce components with complex curved surface convex structures. The prepared components only need to be machined and reshaped in a small area;

[0023] 4. The solution of the present invention can avoid the problem of differential lateral force on the raised portion of the typical annular groove rotating part. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the continuous fiber 3D printing-winding composite molding device in the embodiment Figure 1 ;

[0025] Figure 2 Schematic diagram of the 3D printing part of the continuous fiber 3D printing-winding composite molding device in the embodiment;

[0026] Figure 3 Schematic diagram of the fiber winding part of the continuous fiber 3D printing-winding composite molding device in the embodiment;

[0027] Figure 4 Schematic diagram of the rotation control unit of the continuous fiber 3D printing-winding composite molding device in the embodiment;

[0028] Figure 5 Schematic cross-sectional view of a continuous fiber 3D printing-winding composite molding device in an embodiment;

[0029] Figure 6 Schematic diagram of the continuous fiber 3D printing-winding composite molding device in the embodiment Figure 2 ;

[0030] Figure 7 Schematic diagram of the printed fiber material shearing mechanism of the continuous fiber 3D printing-winding composite molding device in the embodiment. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1

[0033] like Figures 1 to 7As shown, a continuous fiber 3D printing-winding composite molding device includes a frame 1, and the frame 1 adopts a rectangular frame structure. A 3D printing mechanism and a continuous fiber winding mechanism are arranged on the frame 1, and a mounting portion 5 is arranged on the top of the frame 1. The mounting portion 5 is used to connect the motion control device (the motion control device can adopt a three-dimensional moving mechanism driven by a servo motor, or a robot), and is used to control the frame 1 and its connecting parts to realize rotation, translation, and lifting movements as a whole; a 3D printing portion 4 is arranged at the left end of the frame 1, and a fiber winding portion 6 is arranged at the right end of the frame 1. A printed fiber material placement portion 3 and a winding fiber material placement portion 2 (the fiber material placement portion in the present invention refers to a structural component for installing and guiding the operation of the fiber material) are arranged inside the frame 1. The feeding, spraying, shearing and re-feeding of the fiber material are realized through the 3D printing portion 4, and the fiber material is wound on the core mold through the fiber winding portion 6. The fiber winding part 6 is connected to the rotation control part 7, and the rotation control part 7 is used to control the fiber winding part 6 and the winding fiber material placement part 2 to rotate synchronously; the axis of the throat 8 of the 3D printing part 4 is coaxial with the rotation center line of the fiber winding part 6.

[0034] Combination Figure 2 As shown, the 3D printing unit 4 includes a print head mounting plate 41, which is mounted on the left frame of the frame 1. The print head mounting plate 41 is provided with a printing fiber material re-feeding mechanism, a printing fiber material shearing mechanism, a throat 8 with a printing nozzle 47, and a preheating component 46. The throat 8 is arranged horizontally and passes through the heat dissipation component 414 and the preheating component 46; the printing fiber material re-feeding mechanism includes a slide cylinder 45, and the front end of the telescopic rod of the slide cylinder 45 is connected to a re-feeding driven roller 43 that can rotate (here refers to an indirect connection, in order to realize the self-rotation of the re-feeding driven roller 43 and movement, specifically, the front end of the telescopic rod of the slide cylinder 45 is connected to the re-feeding driven roller mounting seat 44, and the re-feeding driven roller 43 is rotatably connected to the re-feeding driven roller mounting seat 44), a re-feeding active roller 48 is arranged directly below the re-feeding driven roller 43, the re-feeding driven roller 43 and the re-feeding active roller 48 are arranged in parallel, and the gap between the re-feeding driven roller 43 and the re-feeding active roller 48 is for the printing fiber material to pass through, the re-feeding driven roller 43 is connected to the servo motor 42, the servo motor 42 drives the re-feeding driven roller 43 to rotate, and the slide cylinder 45 drives the re-feeding driven roller 43 to press down; Figure 7 As shown, the printed fiber material shearing mechanism includes a cylinder 49 fixedly mounted on a cylinder mounting plate 411, a telescopic rod of the cylinder 49 having a front end connected to a cutter 412, a shearing support 413 (the shearing support 413 can be a plate body or a rod body, or a cutter) is disposed on the cylinder mounting plate 411, and the shearing support 413 and the cutter 412 are respectively located on both sides of the printed fiber material in the throat 8 in an initial state, the printed fiber material is sheared close to or against the side wall of the shearing support 413, and the action of the cylinder 49 drives the cutter 412 to rush toward the side wall of the shearing support 413 to achieve shearing of the printed fiber material.

[0035] Among them, the shear support 413 and the tool 412 are arranged between adjacent heat sinks of the heat dissipation assembly 414, and the preheating assembly 46, the heat dissipation assembly 414, the printing fiber material re-feeding mechanism, and the print head mounting plate 41 are arranged in sequence from left to right; the cylinder 49 is arranged below the heat dissipation assembly 414, the slide cylinder 45 is arranged above the re-feeding active roller 48, and the servo motor 42 is arranged behind the print head mounting plate 41.

[0036] Combination Figure 3 As shown, the fiber winding part 6 includes a first side plate 62 and a second side plate 63 arranged at intervals and in parallel, the first side plate 62 and the second side plate 63 are fixed to the right side wall of the seat plate 65, the seat plate 65 is fixedly connected to the cylinder 14, and a large pulley 76 is arranged on the cylinder 14; a laser heater 61 and a tension sensor 69 are arranged on the first side plate 62 and the second side plate 63, a first roller 64, a second roller 66, and a third roller 67 are arranged between the first side plate 62 and the second side plate 63, the first roller 64, the second roller 66, and the third roller 67 are arranged at intervals from left to right and parallel to each other, and a yarn thinning component 68 is arranged between the second roller 66 and the third roller 67; the seat plate 65 has a through hole; the wound fiber material in the operation process passes through the through hole and is guided by the rollers, heated by the laser heater 61, and the tension is detected by the tension sensor 69.

[0037] Combination Figure 4 As shown, the rotation control unit 7 includes a second servo motor 71 (the second servo motor 71 is installed on the motor seat 73) arranged at the bottom of the frame 1 and connected in sequence, a reducer 72, a transmission gear 74, a transmission gear 711, a transmission shaft 710 (bearings are provided at both ends of the transmission shaft 710, one bearing is installed on the bearing seat 1 75, and the other bearing is installed on the bearing seat 2 79), and a small pulley 78. The small pulley 78 is connected to the large pulley 76 through a belt 77. After the second servo motor 71 is turned on, it finally drives the fiber winding unit 6 to rotate as a whole.

[0038] Combination Figure 1 , Figure 5 , Figure 6As shown, the printing fiber material placement part 3 includes a first material tray 35, a fourth roller 31, a fifth roller 32, and a sixth roller 33 that match each other, and both ends of the fourth roller 31, the fifth roller 32, and the sixth roller 33 are fixedly connected to the first vertical plate 11 of the front and rear frames of the frame 1, and a circular through hole is provided in the middle of the left side plate 24 of the first vertical plate 11; the winding fiber material placement part 2 includes a second material tray 25, a seventh roller 21, an eighth roller 22, and a ninth roller 24 that match each other, and the seventh roller 21, the eighth roller 22, and the ninth roller 2 Both ends of 4 are fixedly connected to the second vertical plate 12 of the front and rear frames of the frame 1, a circular through hole is provided in the middle of the right side plate 23 of the second vertical plate 12, the right side plate 23 is fixedly connected to the cylinder 14, a turntable 712 is sleeved on the cylinder 14, and the turntable 712 is installed on the right frame plate 16 of the frame 1; the second vertical plate 12, the right side plate 23, the seventh roller 21, the eighth roller 22, the ninth roller 24, the second material tray 25, the tray 712, the cylinder 14, the rotating part of the turntable 712, the large pulley 76, and the seat plate 65 can rotate synchronously.

[0039] Among them, the seventh roller 21 and the eighth roller 22 are arranged side by side at the same height, the ninth roller 24 is located below the seventh roller 21, and the wound fiber material passes through the top of the seventh roller 21 and the eighth roller 22 at the same time; the fourth roller 31 and the fifth roller 32 are also arranged side by side at the same height, and the sixth roller 33 is located below the fourth roller 31.

[0040] Among them, the second material tray 25 is connected to the second motor 9 (using a servo motor), and the second material tray 25 is driven to rotate by the second motor 9. The second motor 9 and the tension tester matching the tension sensor 69 are all connected to the controller. The processor of the controller implements the following steps / functions when executing its program: when the tension value fed back by the tension sensor 69 is greater than the tension threshold interval, the second motor 9 is controlled to slow down according to a preset amount until the tension value is within the tension threshold interval. At this time, the second motor 9 is controlled to maintain the speed (the speed after deceleration) and continue to run; when the tension value fed back by the tension sensor 69 is less than the tension threshold interval, the second motor 9 is controlled to accelerate according to a preset amount until the tension value is within the tension threshold interval. At this time, the second motor 9 is controlled to maintain the speed (the speed after acceleration) and continue to run.

[0041] Figure 5 The schematic diagram shows one of the core mold installation methods and the routing method of the wound fiber material 10. The barrel of the wound fiber material 10 is installed on the second material tray 25, and the barrel of the printed fiber material is installed on the first material tray 35. The rotating shaft 13 is arranged on the right side of the frame. The core mold is installed on the rotating shaft 13 and is located in front of the fiber winding part 6. The light-colored lines in the figure represent the wound fiber material 10, and the arrows represent the rotation direction of the rotating shaft 13. When in use, first pull out the wound fiber material 10 and follow the Figure 5The middle routing method is connected to the winding starting point on the core mold, and then the rotating shaft 13 is controlled to rotate continuously, and the frame 1 is controlled to run according to the preset path, so that the rotating part body structure is wound on the core mold; then, the frame 1 is controlled to rotate 180 degrees in the horizontal direction, so that the print head of the 3D printing part 4 is facing the core mold, and then printing is performed according to the preset path. During the printing process, the rotating shaft 13 is controlled to rotate, so that an annular convex ridge is printed on the rotating part body structure. Similarly, the rotating shaft 13 can also be arranged on the left side of the frame. When in use, the fiber winding part 6 is first adjusted to the left side for continuous fiber winding, and then the frame 1 is controlled to rotate 180 degrees in the horizontal direction, and then printing is performed. When shearing is required, the cylinder 49 drives the tool 412 to move linearly and cut onto the shearing support 413, and shears the printed fiber material in the middle of the heat dissipation block 414. After shearing, the servo motor 42 drives the re-feeding active roller 48 to rotate, and the slide cylinder 45 drives the re-feeding driven roller 43 to move downward to press the printed fiber material onto the re-feeding active roller 48. The printed fiber material is re-sent into the throat 8 by friction, and continues to be printed after being preheated by the preheating component 46.

[0042] The continuous fiber 3D printing-winding composite molding device in this embodiment cleverly integrates the 3D printing function with the continuous fiber winding function, so that the 3D printing process and the continuous fiber winding process can be quickly and flexibly switched, and the efficient and high-performance production / manufacturing of typical annular groove rotating parts can be achieved in a low-cost manner; the device has a simple structure and occupies a small space, and its fiber arrangement angle can be changed at will, and multi-directional weaving can be achieved. In the continuous fiber winding process, the winding fiber material can be kept flat to avoid twisting of the winding fiber material, and the tension of the winding fiber material during the conveying process can be ensured to be consistent and conveniently controllable, and it is particularly suitable for the molding of thermoplastic prepreg fiber materials;

[0043] The adoption of the solution in the embodiment can not only solve the common problem of high-efficiency and high-performance molding of typical ring groove rotating parts, but also can quickly produce components with complex curved surface protruding structures. The prepared components only need to be machined and modified in a small area; more importantly, it can avoid the problem of differential lateral force on the protruding part of the typical ring groove rotating parts.

Claims

1. A continuous fiber 3D printing-winding composite molding device, comprising a frame (1), characterized in that: A 3D printing mechanism and a continuous fiber winding mechanism are arranged on the frame (1); a mounting portion (5) is arranged on the top of the frame (1); the mounting portion (5) is used to connect to a motion control device and to control the frame (1) and its connected components as a whole to realize rotation, translation and lifting movements; a 3D printing portion (4) is arranged at the left end of the frame (1); a fiber winding portion (6) is arranged at the right end of the frame (1); a printed fiber material placement portion (3) and a wound fiber material placement portion (2) are arranged inside the frame (1); the fiber material is fed, sprayed, sheared and re-fed through the 3D printing portion (4); and the fiber material is wound on a core mold through the fiber winding portion (6); The fiber winding portion (6) is connected to a rotation control portion (7), and the rotation control portion (7) is used to control the fiber winding portion (6) and the wound fiber material placement portion (2) to rotate synchronously; the throat axis of the 3D printing portion (4) is coaxial with the rotation center line of the fiber winding portion (6); The 3D printing unit (4) comprises a print head mounting plate (41), the print head mounting plate (41) being mounted on the left frame of the frame (1), the print head mounting plate (41) being provided with a printing fiber material re-feeding mechanism, a printing fiber material shearing mechanism, a throat with a printing nozzle (47), and a preheating component (46), the throat being arranged horizontally and passing through the heat dissipation component (414) and the preheating component (46); the printing fiber material re-feeding mechanism comprises a slide cylinder (45), the front end of the telescopic rod of the slide cylinder (45) being connected to the A re-feeding driven roller (43) is connected to the re-feeding driven roller (43) which can rotate. A re-feeding driving roller (48) is arranged directly below the re-feeding driven roller (43). The re-feeding driven roller (43) and the re-feeding driving roller (48) are arranged in parallel. The gap between the re-feeding driven roller (43) and the re-feeding driving roller (48) allows the printing fiber material to pass through. The re-feeding driven roller (43) is connected to a servo motor (42). The servo motor (42) drives the re-feeding driven roller (43) to rotate, and the slide cylinder (45) drives the re-feeding driven roller (43) to press downward. The fiber winding section (6) comprises a first side plate (62) and a second side plate (63) which are arranged in parallel and at intervals, the first side plate (62) and the second side plate (63) being fixed to the right side wall of the seat plate (65), the seat plate (65) being fixedly connected to the cylinder (14), and a large pulley (76) being provided on the cylinder (14); a laser heater (61) and a tension sensor (69) are provided on the first side plate (62) and the second side plate (63), a first roller (64), a second roller (66), and a third roller (67) are provided between the first side plate (62) and the second side plate (63), the first roller (64), the second roller (66), and the third roller (67) being arranged in parallel and at intervals from left to right, A yarn thinning component (68) is arranged between the second roller (66) and the third roller (67); the base plate (65) has a through hole; during operation, the wound fiber material passes through the through hole and is guided by the roller, heated by the laser heater (61), and the tension is detected by the tension sensor (69); the rotation control part (7) comprises a second servo motor (71) arranged at the bottom of the frame (1) and connected in sequence, a reducer (72), a large transmission gear (74), a small transmission gear (711), a transmission shaft (710), and a small pulley (78); the small pulley (78) is connected to the large pulley (76) via a belt (77); and the second servo motor (71) is turned on to finally drive the fiber winding part (6) to rotate as a whole.

2. The continuous fiber 3D printing-winding composite molding device according to claim 1, characterized in that: The printing fiber material shearing mechanism comprises a cylinder (49) fixedly mounted on a cylinder mounting plate (411); a front end of a telescopic rod of the cylinder (49) is connected to a cutter (412); a shearing support member (413) is disposed on the cylinder mounting plate (411); the shearing support member (413) and the cutter (412) are respectively located on two sides of the printing fiber material in the throat in an initial state; the printing fiber material is sheared close to or against a side wall of the shearing support member (413); the cylinder (49) is actuated to drive the cutter (412) toward the side wall of the shearing support member (413) to achieve shearing of the printing fiber material.

3. The continuous fiber 3D printing-winding composite molding device according to claim 2 is characterized in that: The shear support member (413) and the cutter (412) are arranged between adjacent heat sinks of the heat sink assembly (414); the preheating assembly (46), the heat sink assembly (414), the printing fiber material re-feeding mechanism, and the print head mounting plate (41) are arranged in sequence from left to right; the cylinder (49) is arranged below the heat sink assembly (414); the slide cylinder (45) is arranged above the re-feeding active roller (48); and the servo motor (42) is arranged behind the print head mounting plate (41).

4. The continuous fiber 3D printing-winding composite molding device according to claim 3 is characterized in that: The printing fiber material placement part (3) comprises a first material tray (35), a fourth roller (31), a fifth roller (32), and a sixth roller (33) which are matched with each other, and both ends of the fourth roller (31), the fifth roller (32), and the sixth roller (33) are fixedly connected to the first vertical plate (11) of the front and rear frames of the frame (1), and a circular through hole is provided in the middle of the left side plate of the first vertical plate (11); the winding fiber material placement part (2) comprises a second material tray (25), a seventh roller (21), an eighth roller (22), and a ninth roller (24) which are matched with each other, and both ends of the seventh roller (21), the eighth roller (22), and the ninth roller (24) are fixedly connected to the first vertical plate (11) of the front and rear frames of the frame (1), and a circular through hole is provided in the middle of the left side plate of the first vertical plate (11); A second vertical plate (12) is fixedly connected to the front and rear frames of the frame (1); a circular through hole is provided in the middle of a right side plate (23) of the second vertical plate (12); the right side plate (23) is fixedly connected to a cylinder (14); a turntable (712) is sleeved on the cylinder (14); and the turntable (712) is mounted on a right frame plate (16) of the frame (1); the second vertical plate (12), the right side plate (23), the seventh roller (21), the eighth roller (22), the ninth roller (24), the second material tray (25), the turntable (712), the cylinder (14), the rotating part of the turntable (712), the large pulley (76), and the seat plate (65) can rotate synchronously.

5. The continuous fiber 3D printing-winding composite molding device according to claim 4, characterized in that: The seventh roller (21) and the eighth roller (22) are arranged side by side at the same height, and the ninth roller (24) is located below the seventh roller (21). The wound fiber material passes through the top of the seventh roller (21) and the eighth roller (22) at the same time. The fourth roller (31) and the fifth roller (32) are also arranged side by side at the same height, and the sixth roller (33) is located below the fourth roller (31).

6. The continuous fiber 3D printing-winding composite molding device according to claim 5, characterized in that: The second material tray (25) is connected to the second motor (9), and the second material tray (25) is driven to rotate by the second motor (9). The second motor (9) and the tension tester matched with the tension sensor (69) are connected to the controller. When the processor of the controller executes its program, the following steps / functions are implemented: When the tension value fed back by the tension sensor (69) is greater than the tension threshold range, controlling the second motor (9) to reduce speed according to a preset amount until the tension value is within the tension threshold range; When the tension value fed back by the tension sensor (69) is less than the tension threshold range, the second motor (9) is controlled to accelerate according to a preset amount until the tension value is within the tension threshold range.

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