Double-head carbon fiber printing device and printing method

Abstract

The invention discloses a double-head carbon fiber printing device and a printing method, and belongs to the technical field of 3D printing, the double-head carbon fiber printing device comprises a rack, a working rotary table is fixedly mounted on the rack, two Y-axis sliding rail mechanisms are symmetrically arranged on the two sides of the working rotary table, an X-axis sliding rail mechanism is slidably connected between the two Y-axis sliding rail mechanisms, and two Z-axis sliding rail mechanisms are oppositely arranged on the two sides of the X-axis sliding rail mechanism; the two Z-axis sliding rail mechanisms are synchronously arranged on the X-axis sliding rail mechanism in a sliding mode, one Z-axis sliding rail mechanism is provided with the ultrasonic printing head, the other Z-axis sliding rail mechanism is connected with the laser printing head through the swing mechanism, the double-head design is adopted, the ultrasonic printing head and the laser printing head are integrated, parallel printing of multiple materials can be achieved, and the printing efficiency is improved. Compared with the prior art, carbon fibers and other base materials can be printed synchronously, flexible switching of multiple materials and multiple processes is achieved, the printing efficiency and precision are remarkably improved, meanwhile, switching of a single printing head does not need to be conducted frequently, path planning is more reasonable, and material waste is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a double-head carbon fiber printing device and a printing method. Background Art

[0002] 3D printing technology, also known as additive manufacturing technology, can draw virtual models through computers, put data and raw materials into 3D printers, and print out entities by stacking materials layer by layer. 3D printing has significant advantages such as high design freedom, high material utilization, and short production cycle.

[0003] Carbon fiber composite materials have broad application prospects in the field of high-end manufacturing due to their excellent properties such as high strength, low density and corrosion resistance. Combined with 3D printing technology, they can produce three-dimensional entities with excellent mechanical properties. Existing carbon fiber 3D printers mostly use a single nozzle design.

[0004] The traditional single-nozzle design has the problem of slow printing speed during the printing process. Specifically, the single nozzle prints carbon fiber and other matrix materials in sequence, resulting in low overall printing efficiency and difficulty in flexible switching of multiple materials and multiple processes, which limits its application in the manufacture of complex structural parts and multi-functional components. There is also the problem of low material utilization. Due to frequent switching of a single print head and unreasonable path planning, expensive materials such as carbon fiber are wasted; in addition, its three-dimensional motion stability is poor, and the motion trajectory of the single nozzle in three-dimensional space is complex. It is easy to cause printing deviation due to mechanical vibration or insufficient control accuracy, affecting the printing quality. Summary of the invention

[0005] In order to solve the technical problems in the above-mentioned background technology that the existing carbon fiber 3D printer has a single nozzle structure, low printing efficiency, low material utilization rate and poor printing quality, the present invention provides a double-head carbon fiber printing device.

[0006] The technical solution of the present invention is as follows: The invention provides a double-head carbon fiber printing device, comprising: a frame, a working turntable is fixedly installed on the frame, two Y-axis slide rail mechanisms are symmetrically arranged on both sides of the working turntable, an X-axis slide rail mechanism is slidably connected between the two Y-axis slide rail mechanisms, two Z-axis slide rail mechanisms are relatively arranged on both sides of the X-axis slide rail mechanism, the two Z-axis slide rail mechanisms are synchronously slidably arranged on the X-axis slide rail mechanism, an ultrasonic print head is installed on one Z-axis slide rail mechanism, and the other Z-axis slide rail mechanism is connected with a laser print head through a swing mechanism. A double-head design is adopted, and an ultrasonic print head and a laser print head are integrated, so that multi-material parallel printing can be realized, and carbon fiber and other matrix materials can be printed synchronously to realize flexible switching of multi-materials and multi-processes, which significantly improves printing efficiency and accuracy. At the same time, there is no need to frequently switch a single print head, and path planning is more reasonable, thereby avoiding waste of materials.

[0007] Preferably, the X-axis slide mechanism includes an X-axis beam whose two ends are slidably connected to two Y-axis slide mechanisms, X-axis guide rails are fixedly provided on the front and rear sides of the X-axis beam, each X-axis guide rail is slidably connected to the corresponding Z-axis slide mechanism via an X-axis slider, the two Z-axis slide mechanisms are fixedly connected via an X-axis connecting plate, the X-axis connecting plate is connected to an X-axis ball screw arranged on the top of the X-axis beam via a nut seat, the X-axis ball screw is connected to an X-axis motor, which ensures the stability and accuracy of the Z-axis slide mechanism moving in the X-axis direction, the ball screw has high transmission accuracy and low friction, and is matched with the precise motor drive to achieve millimeter-level or even finer displacement control, avoid jamming and deviation, and ensure that the print head strictly follows the set path when moving in the horizontal direction, laying the foundation for high-quality printing.

[0008] Preferably, the ultrasonic print head is fixedly mounted on the ultrasonic head fixing block, and the ultrasonic head fixing block is connected with the Z-axis guide rail and the Z-axis ball screw on the corresponding Z-axis slide rail mechanism through the Z-axis slider and the nut seat, so that the ultrasonic print head can be easily moved in the Z-axis direction, and the printing height can be quickly adjusted according to the printing task. It can be flexibly adapted to both the deep penetration printing of thick materials and the fine surface processing of thin workpieces, and has a compact and stable structure, which is conducive to long-term stable operation and reduces the frequency of equipment maintenance.

[0009] Preferably, the swing mechanism includes a swing head fixing block, which is connected to the Z-axis ball screw and Z-axis guide rail on the corresponding Z-axis slide mechanism through a nut seat and a Z-axis slider. An upper arc guide rail and a lower arc guide rail are provided on the side of the swing head fixing block. The upper arc guide rail and the lower arc guide rail are respectively slidably connected to a laser head fixing block through an upper slider and a lower slider. The laser print head is fixedly mounted on the laser head fixing block. The laser head fixing block and the swing head fixing block are also connected through a drive assembly. The combination of the arc guide rail and the slider provides a smooth and precise swing trajectory for the laser print head to meet the printing requirements of special angles and complex shapes. Combined with the drive assembly, the movement dimension of the laser print head is further expanded, so that it can respond to instructions quickly and accurately position, thereby ensuring the continuity and accuracy of printing complex patterns and reducing the scrap rate.

[0010] Preferably, the driving assembly includes a fixed block ball screw driven by a motor, the fixed block ball screw is parallel to the X-axis crossbeam, the fixed block ball screw is arranged in the second linear guide, the second linear guide is fixedly mounted on the swing head fixed block, the fixed block ball screw is connected to the second slide through a nut seat, a fourth cross roller bearing is rotatably provided on the second slide, the fourth cross roller bearing is rotatably connected to a third connecting rod, the third connecting rod is away from one end of the fourth cross roller bearing, and is rotatably connected to the laser head fixed block through the third cross roller bearing, and the motor driving force is converted into precise swinging motion through the coordinated operation of the ball screw, cross roller bearing and connecting rod, and the cross roller bearing can withstand multi-directional forces to ensure a smooth and low-noise movement process; at the same time, the transmission structure is compact and efficient, occupies little space, is conducive to the miniaturized design of the equipment, and each component has little wear and tear, thereby extending the service life of the equipment.

[0011] Preferably, the upper arc guide rail and the lower arc guide rail have the same curvature and bending direction, and two upper sliders are slidably provided on the upper arc guide rail, and the two upper sliders are symmetrically arranged along the center line of the upper arc guide rail, and a lower slider is slidably provided on the lower arc guide rail, and the upper slider and the lower slider form a triangular support. The triangular support structure gives the laser head fixing block better stability, and can effectively resist external interference and vibration during frequent swinging and high-speed printing, maintain the stability of the print head posture, ensure accurate projection of the laser beam, improve the clarity and consistency of the printed pattern, and reduce printing defects caused by shaking.

[0012] Preferably, the work turntable includes a workbench and a base, the base is fixedly arranged on the frame, and a first linear guide rail and a motor-driven workbench ball screw are installed on the base, the workbench ball screw is parallel to the X-axis slide rail mechanism, the workbench ball screw and the first linear guide rail are connected to the first slide through a nut seat and a slider respectively, the first slide is connected to the L-shaped connecting plate through a swing assembly, a servo motor is vertically installed on the L-shaped connecting plate, and the servo motor is connected to the workbench to realize the swing and rotation control of the workbench, which is convenient for quickly adjusting the position and angle of the workpiece to be printed and adapting to different printing processes and workpiece shapes. The linear guide rail is matched with the ball screw to ensure smooth movement and high precision; the intervention of the servo motor makes the rotation angle control more precise, which is conducive to all-round and multi-angle printing and reduces manual intervention and adjustment time.

[0013] Preferably, the swing assembly includes a first connecting rod parallel to the Z axis in a non-working state and a second connecting rod parallel to the X axis, one end of the second connecting rod is rotatably connected to the first slide via a first cross roller bearing, the other end of the second connecting rod is rotatably connected to the lower end of the first connecting rod via a second cross roller bearing, the upper end of the first connecting rod is fixedly connected to the L-shaped connecting plate via a connecting sleeve, the connecting sleeve is rotatably connected to the base, the connecting sleeve is parallel to the Y axis, and a flexible and stable swinging structure is constructed by combining the connecting rod and the cross roller bearing, so that the workbench can swing smoothly around the Y axis, expanding the printing space dimension, and the cross roller bearing reduces wear and resistance to ensure smooth swinging; the connecting rod has a simple structure and high reliability, can adapt to frequent action requirements, and improves the overall durability of the equipment.

[0014] The present invention provides a printing method, which is as follows: The ultrasonic print head and the laser print head are driven by the X-axis slide rail mechanism, the Y-axis slide rail mechanism and the Z-axis slide rail mechanism to move along the set track for printing; When printing is required in spatial positions other than the X, Y, and Z axes, the workbench and / or laser print head can be adjusted according to the needs to give full play to the advantages of the equipment's mechanical structure. Conventional three-axis mobile printing can meet most basic printing tasks with high efficiency and stability. When faced with special and complex printing needs, the workbench or laser print head can be flexibly adjusted to break the limitations of traditional three axes and achieve multi-dimensional printing, thus meeting the processing needs of complex carbon fiber components in the fields of aerospace, high-end manufacturing, etc.

[0015] Preferably, the servo motor drives the worktable to rotate around the Z axis and / or the swing assembly drives the worktable to swing around the Y axis; When adjusting the laser print head: the swing mechanism drives the laser print head to swing along the Y-axis. The multi-dimensional dynamic adjustment method fully covers the printing needs of different angles and positions, and accurately positions the print head and the workpiece, which not only ensures printing accuracy but also improves processing flexibility; all components work together smoothly, reducing equipment idle time and improving the overall equipment production capacity and resource utilization.

[0016] It can be seen from the above technical solutions that the advantages of the present invention are: 1. The dual print head structure can realize parallel printing of multiple materials, and can print carbon fiber and other matrix materials simultaneously, so as to realize flexible switching of multiple materials and multiple processes, significantly improving printing efficiency and accuracy. At the same time, there is no need to frequently switch a single print head, and the path planning is more reasonable, avoiding material waste. The Y-axis adopts a dual-drive structure with symmetrical structures on the left and right sides. By simultaneously controlling the motors on both sides to drive the ball screws on both sides to move synchronously, the force on the Y-axis direction is more balanced, avoiding the eccentric load caused by uneven force, thereby improving the overall processing accuracy of the printing equipment.

[0017] 2. The workbench and / or laser print head can be adjusted according to needs. Conventional three-axis mobile printing meets most basic printing tasks, which is efficient and stable. When facing special and complex printing needs, the workbench or laser print head can be flexibly adjusted to break the limitations of traditional three-axis and realize multi-dimensional stereoscopic printing. Multi-dimensional dynamic adjustment methods fully cover printing needs at different angles and positions, and accurately position the print head and workpiece, which not only ensures printing accuracy but also improves processing flexibility. All components work together smoothly, reducing equipment idle time and improving the overall equipment production capacity and resource utilization.

[0018] 3. The two upper sliders and the lower slider form a triangular support, so that the laser head fixing block can remain stable during the swinging process, and can effectively resist external force interference from all directions, ensuring the position accuracy of the laser print head during swinging. The triangular support structure can reduce the transmission of vibration to the laser head fixing block, so that the laser print head can work in a relatively stable environment, further ensuring the stability of printing quality.

[0019] 4. The ball screw, cross roller bearing and connecting rod work together to convert the motor driving force into precise swinging motion. The cross roller bearing can withstand multi-directional forces to ensure smooth and low-noise movement. At the same time, the transmission structure is compact and efficient, occupies little space, is conducive to the miniaturization design of the equipment, and the wear of each component is small, which extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 The overall structure of the double-head carbon fiber printing device according to one or more embodiments of the present invention is schematically shown. Figure 1; Figure 2 The overall structure of the double-head carbon fiber printing device according to one or more embodiments of the present invention is schematically shown. Figure 2 ; Figure 3 The overall structure of the double-head carbon fiber printing device according to one or more embodiments of the present invention is schematically shown. Figure 3 (Remove the outer shell from the laser head); Figure 4 It is a schematic diagram of the overall structure of a working turntable according to one or more embodiments of the present invention; Figure 5 A schematic diagram of the rear view structure of a working turntable according to one or more embodiments of the present invention; Figure 6 It is a schematic diagram of the front view structure of the swing mechanism according to one or more embodiments of the present invention; Figure 7 It is a schematic structural diagram of a swing head fixing block according to one or more embodiments of the present invention; The components represented by the reference numerals in the figure are: 1. Ultrasonic print head; 2. Laser print head; 3. Work turntable; 4. Y-axis slide rail mechanism; 5. X-axis slide rail mechanism; 6. First Z-axis slide rail mechanism; 7. Second Z-axis slide rail mechanism; 8. Frame; 9. X-axis ball screw; 10. X-axis guide rail; 11. Y-axis motor; 12. Y-axis slider; 13. Y-axis ball screw; 14. Y-axis guide rail; 15. Ultrasonic head fixing block; 16. First Z-axis support plate; 17. X-axis connecting plate; 18. Second Z-axis support plate; 19. Z-axis motor; 20. X-axis motor; 21. Z-axis ball screw; 22. Z-axis guide rail; 23. Z-axis slider; 24. Swing head fixing block; 25. Laser head fixing block; 26. X-axis transverse Beam; 27, workbench; 28, first connecting rod; 29, first drive motor; 30, workbench ball screw; 31, second connecting rod; 32, first slide; 33, first linear guide; 34, first cross roller bearing; 35, second cross roller bearing; 36, connecting sleeve; 37, transition connecting plate; 38, reducer; 39, L-shaped connecting plate; 40, base; 41, turntable bearing; 42, upper arc guide; 43, upper slide; 44, second drive motor; 45, fixed block ball screw; 46, third cross roller bearing; 47, third connecting rod; 48, fourth cross roller bearing; 49, second slide; 50, lower arc guide; 51, lower slide. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] Example 1 In a typical embodiment of the present invention, Figure 1-Figure 3 As shown, a double-head carbon fiber printing device is proposed, including: a frame 8, a working turntable 3, a Y-axis slide mechanism 4, an X-axis slide mechanism 5, a Z-axis slide mechanism, an ultrasonic print head 1 and a laser print head 2, the working turntable 3 is installed on the frame 8, specifically at the middle position of the frame 8, the Y-axis slide mechanism 4 is horizontally fixedly installed on the frame 8, two Y-axis slide mechanisms 4 are provided, and the two Y-axis slide mechanisms 4 are symmetrically distributed on both sides of the working turntable 3, the X-axis slide mechanism 5 is horizontally slidably arranged on the two Y-axis slide mechanisms 4, the X-axis slide mechanism 5 is perpendicular to the two Y-axis slide mechanisms 4, and two Z-axis slide mechanisms are provided, namely a first Z-axis slide mechanism 6 and a second Z-axis slide mechanism 7, the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 are relatively arranged on both sides of the X-axis slide mechanism 5, and the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 are relatively arranged on both sides of the X-axis slide mechanism 5, and the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 synchronous sliding is arranged on the X-axis slide rail mechanism 5, the ultrasonic print head 1 is movably installed on the first Z-axis slide rail mechanism 6, and can move vertically along the first Z-axis slide rail mechanism 6, the laser print head 2 is installed on the second Z-axis slide rail mechanism 7 through a swing mechanism, the X-axis slide rail mechanism 5, the Y-axis slide rail mechanism 4 and the Z-axis slide rail mechanism are all ball screw drive structures, wherein the working turntable 3 adopts a structural design combining a connecting rod structure and a ball screw transmission, so that the working turntable 3 can rotate around the Z axis and also make a small swing around the Y axis to realize the function of multi-angle printing.

[0024] The Y-axis slide rail mechanism 4 is a dual-drive structure, that is, the two Y-axis slide rail mechanisms 4 are independently and synchronously driven by their respective drive structures. Specifically, the Y-axis slide rail mechanism 4 includes a Y-axis motor 11, a Y-axis slider 12, a Y-axis ball screw 13 and a Y-axis guide rail 14. The Y-axis guide rail 14 and the Y-axis ball screw 13 are both horizontally mounted on the frame 8. One end of the Y-axis ball screw 13 is fixedly connected to the output end of the Y-axis motor 11 through a coupling. The Y-axis motor 11 is fixedly mounted on the frame 8, and the Y-axis motor 11 can be used to drive the Y-axis ball screw 13 to rotate around the axis. The Y-axis slider 12 is slidably arranged on the Y-axis guide rail 14; the bottoms of both ends of the X-axis slide rail mechanism 5 are fixedly connected to the adjacent Y-axis sliders 12 to achieve X The X-axis slide mechanism 5 is slidably connected to the Y-axis slide mechanism 4, and nut seats are fixed at the bottom of both ends of the X-axis slide mechanism 5. The two ends of the X-axis slide mechanism 5 are threadedly connected to the adjacent Y-axis ball screw 13 through the nut seats, so that the Y-axis ball screw 13 is used to drive the movement of the X-axis slide mechanism 5. The two Y-axis slide mechanisms 4 are symmetrically arranged and independently driven synchronously. Through the combination of their own motors and ball screws, the two ends of the X-axis slide mechanism 5 are driven simultaneously, and the force is more balanced, avoiding the eccentric load caused by uneven force, ensuring the stability and accuracy of the movement of the X-axis slide mechanism 5, reducing its vibration and shaking during high-speed operation of the machine tool, thereby improving the overall machining accuracy of the machine tool.

[0025] The X-axis slide rail mechanism 5 includes an X-axis ball screw 9, an X-axis guide rail 10, an X-axis motor 20 and an X-axis crossbeam 26. The bottoms of both ends of the X-axis crossbeam 26 are slidably connected to the adjacent Y-axis slide rail mechanism 4 through a nut seat and a Y-axis slider 12. The front and rear sides of the X-axis crossbeam 26 are symmetrical structures. The front and rear sides of the X-axis crossbeam 26 are fixedly provided with X-axis guide rails 10, and the X-axis guide rails 10 extend along the length direction of the X-axis crossbeam 26. An X-axis slider is slidably provided on each X-axis guide rail 10 to be connected to the corresponding first Z-axis slide rail mechanism 6 and second Z-axis slide rail mechanism 7 through the X-axis slider. The X-axis ball screw 9 is installed on the top of the X-axis crossbeam 26 and extends along the length direction of the X-axis crossbeam 26. The X-axis motor 20 is fixed Installed on the top of the X-axis crossbeam 26, the output end of the X-axis motor 20 is fixedly connected to one end of the X-axis ball screw 9 through a coupling to drive the X-axis ball screw 9. The two X-axis guide rails 10 are relatively distributed on both sides of the X-axis ball screw 9 and are both lower than the X-axis ball screw 9. The first Z-axis slide rail mechanism 6 and the second Z-axis slide rail mechanism 7 are fixedly connected through an X-axis connecting plate 17. The X-axis connecting plate 17 is located above the X-axis crossbeam 26. A nut seat is fixedly provided at the bottom of the X-axis connecting plate 17. The X-axis connecting plate 17 is threadedly connected to the X-axis ball screw 9 through the nut seat. Driven by the X-axis ball screw 9, the first Z-axis slide rail mechanism 6 and the second Z-axis slide rail mechanism 7 can move synchronously along the X-axis guide rail 10.

[0026] The first Z-axis slide rail mechanism 6 includes a first Z-axis support plate 16, and the second Z-axis slide rail mechanism 7 includes a second Z-axis support plate 18. The first Z-axis support plate 16 and the second Z-axis support plate 18 are relatively vertically arranged on the front and rear sides of the X-axis beam 26. The first Z-axis support plate 16 and the second Z-axis support plate 18 are respectively slidably connected to the X-axis guide rail 10 on the same side through the X-axis slider. A group of Z-axis ball screw pairs are respectively provided on the first Z-axis support plate 16 and the second Z-axis support plate 18. Since the structures of the first Z-axis slide rail mechanism 6 and the second Z-axis slide rail mechanism 7 are the same, this embodiment is described by taking the second Z-axis slide rail mechanism 7 as an example. Specifically, the Z-axis ball screw pair includes a Z-axis motor 19, a Z-axis ball screw 21, a Z-axis guide rail 22 and a Z-axis slider 23. The Z-axis motor 19 is vertically fixedly installed on the second Z-axis support plate 18, and the output end of the Z-axis motor 19 is fixedly connected to one end of the Z-axis ball screw 21 through a coupling. The Z-axis ball screw 21 is vertically mounted on the second Z-axis support plate 18 so as to drive the Z-axis ball screw 21 to rotate around the axis through the Z-axis motor 19. The Z-axis guide rail 22 is vertically fixedly mounted on the second Z-axis support plate 18. The Z-axis slider 23 is slidably arranged on the Z-axis guide rail 22. The ultrasonic print head 1 is fixedly mounted on the ultrasonic head fixing block 15. The ultrasonic head fixing block 15 is fixedly mounted with a nut seat and is fixedly connected to the Z-axis slider 23 on the first Z-axis slide rail mechanism 6. The ultrasonic head fixing block 15 is threadedly connected to the Z-axis ball screw 21 on the first Z-axis slide rail mechanism 6 through the nut seat so as to utilize the first Z-axis slide rail mechanism 6 to drive the ultrasonic print head 1 to reciprocate vertically on the Z-axis. The laser print head 2 is connected to the Z-axis slider 23 and the Z-axis ball screw 21 on the second Z-axis slide rail mechanism 7 through a swinging mechanism so as to utilize the second Z-axis slide rail mechanism 7 to drive the laser print head 2 to reciprocate vertically on the Z-axis.

[0027] like Figure 6 As shown, the swing mechanism includes a swing head fixing block 24 and a laser head fixing block 25. The swing head fixing block 24 is connected to the Z-axis ball screw 21 and the Z-axis guide rail 22 on the second Z-axis slide rail mechanism 7 through a nut seat and a Z-axis slider 23. The laser head fixing block 25 is movably mounted on the swing head fixing block 24, and the laser print head 2 is fixedly mounted on the laser head fixing block 25. Figure 7As shown, an upper arc guide rail 42 and a lower arc guide rail 50 are fixedly arranged at intervals from top to bottom on a side surface of the swing head fixing block 24 away from the Z-axis slide rail mechanism. The upper arc guide rail 42 and the lower arc guide rail 50 have the same curvature and bending direction. Among them, two upper sliders 43 are slidably arranged on the upper arc guide rail 42. In a non-working state, the two upper sliders 43 are symmetrically arranged along the center line of the upper arc guide rail 42, which can provide precise guidance. In the process of the laser head fixing block 25 swinging along the arc guide rail, the symmetrical upper sliders 43 can ensure that its swing path is always along the center line of the arc guide rail to avoid deflection. A lower slider 51 is slidably arranged on the lower arc guide rail 50. In the non-working state, the lower slider 51 is located on the center line of the lower arc guide rail 50, and the laser head fixing block 25 is fixedly connected to the upper slider 43 and the lower slider 51, so that the laser head fixing block 25 is slidably connected to the swing head fixing block 24. The two upper sliders 43 and the lower slider 51 form a triangular support, so that the laser head fixing block 25 can remain stable during the swinging process, and can effectively resist external force interference from all directions, ensuring the position accuracy of the laser print head 2 during the swinging, and the triangular support structure can reduce the transmission of vibration to the laser head fixing block 25, so that the laser print head 2 can work in a relatively stable environment, further ensuring the stability of printing quality.

[0028] A driving assembly is also fixedly mounted on the swing head fixed block 24, and the driving assembly includes a second driving motor 44 and a fixed block ball screw 45, the second driving motor 44 and the fixed block ball screw 45 are located between the upper arc guide rail 42 and the lower arc guide rail 50, the fixed block ball screw 45 is arranged horizontally, and the axis of the fixed block ball screw 45 is parallel to the X-axis crossbeam 26, the second driving motor 44 is connected to one end of the fixed block ball screw 45 through a transmission belt assembly to realize the driving of the fixed block ball screw 45, the transmission belt assembly is a pulley and a transmission belt structure, and the fixed block ball screw 45 is arranged in the second In the linear guide, the second linear guide is fixedly installed on the swing head fixed block 24, and a nut seat is threadedly connected to the fixed block ball screw 45, and a second slide 49 is connected through the nut seat. A fourth cross roller bearing 48 is rotatably installed on the second slide 49, and the fourth cross roller bearing 48 is rotatably connected to the third connecting rod 47. The end of the third connecting rod 47 away from the fourth cross roller bearing 48 is rotatably connected to the third cross roller bearing 46. The third connecting rod 47 is rotatably connected to the laser head fixed block 25 through the third cross roller bearing 46, and the laser print head 25 is fixedly installed on the laser head fixed block 25.

[0029] When the second drive motor 44 is working, the fixed block ball screw 45 is rotated through the belt transmission, and then the second slide 49 is driven to move left and right along the second linear guide rail through the nut seat. At the same time, the third connecting rod 47 rotates around the fourth cross roller bearing 48, and then drives the laser head fixed block 25 to rotate around the third cross roller bearing 46. The slider and the arc guide rail play a guiding role, so that the laser print head 2 can make a small swing along the Y-axis direction to achieve multi-angle printing.

[0030] The crossed roller bearing itself has a high rotational accuracy, and the clearance between its rolling elements is controlled within a very small range, which can ensure high-precision positioning of the laser print head 2 during movement, meet the needs of high-precision printing, and perform well at high speeds, and can achieve rapid movement and swinging of the laser print head 2. The movement process is smooth, which helps to improve printing efficiency and print quality, and reduce printing defects caused by unstable movement. The rollers of the crossed roller bearing are arranged at 90 degrees and can withstand large axial and radial loads at the same time. During the movement of the laser print head 2, even if it is subjected to complex external forces, it can maintain the stability of the structure to ensure the normal operation of the print head, and can effectively resist the overturning moment caused by external forces or during movement, prevent the laser print head from tilting or offset, ensure the stability of the print head when it swings at multiple angles, and improve the accuracy of printing.

[0031] Since the inner and outer rings of the crossed roller bearing are relatively small in size and cooperate with the connecting rod, the entire structure is compact and occupies less space, which is conducive to the miniaturization and lightweight design of the equipment. Through the cooperation of the connecting rod and the crossed roller bearing, the laser print head 2 can make a small swing along the Y-axis direction to achieve multi-angle printing, increase the flexibility and adaptability of printing, and meet the printing needs of different shapes and structures. In addition, the connecting rod length, bearing clearance and other parameters can be adjusted according to actual needs, which is convenient for optimizing the motion range and accuracy of the print head, so that it can better adapt to different printing tasks and working environments.

[0032] like Figure 4 and Figure 5As shown, the working turntable 3 includes a worktable 27, a first connecting rod 28, a first driving motor 29, a worktable ball screw 30, a second connecting rod 31, a first slide 32, a first linear guide 33, a first cross roller bearing 34, a second cross roller bearing 35, a connecting sleeve 36, a transition connecting plate 37, a reducer 38, an L-shaped connecting plate 39, a base 40, a turntable bearing 41 and a servo motor, wherein the first driving motor 29, the worktable ball screw 30 and the first linear guide 33 are all fixedly mounted on the base 40, the axis of the worktable ball screw 30 is parallel to the X-axis crossbeam 26, the worktable ball screw 30 is installed in the first linear guide 33, the output end of the first driving motor 29 is connected to one end of the worktable ball screw 30 through a coupling, a nut seat is threadedly connected to the worktable ball screw 30 to be connected to the first slide 32 through the nut seat, and the first slide 32 Slide blocks are installed on both sides of the end surface of the ball screw 30 close to the workbench, and the slide blocks are slidably connected to the first linear guide rail 33. The first slide 32 is connected to the L-shaped connecting plate 39 through a swinging assembly. The swinging assembly includes a first cross roller bearing 34, a second connecting rod 31, a second cross roller bearing 35, a first connecting rod 28 and a connecting sleeve 36. The outer circle of the first cross roller bearing 34 is fixedly connected to the first slide 32, the inner circle of the first cross roller bearing 34 is fixedly connected to one end of the second connecting rod 31 (the left end in this embodiment), the outer circle of the second cross roller bearing 35 is fixedly connected to the lower end of the first connecting rod 28, and the inner circle of the second cross roller bearing 35 is fixedly connected to the other end of the second connecting rod 31 (the right end in this embodiment). In the non-working state, the first connecting rod 28 is parallel to the Z axis, the second connecting rod 31 is parallel to the X axis, the first connecting rod 28 and the second connecting rod 31 are perpendicular to each other and combined into an L-shaped structure.

[0033] The upper end of the first connecting rod 28 is fixed to the rear end of the connecting sleeve 36, and the connecting sleeve 36 is parallel to the Y-axis. The front end of the connecting sleeve 36 is fixedly connected to the L-shaped connecting plate 39, and the front end of the connecting sleeve 36 is fixedly connected to the inner ring of the turntable bearing 41. The outer ring of the turntable bearing 41 is fixedly installed in the circular hole on the upper side of the base 40. The upper end of the L-shaped connecting plate 39 is fixedly installed with a reducer 38, and the reducer 38 is a harmonic reducer. The lower end of the L-shaped connecting plate 39 is fixedly installed with a servo motor, and the output shaft of the servo motor is inserted into the input end of the harmonic reducer. The output end of the harmonic reducer is fixedly installed with a transition connecting plate 37, and the workbench 27 is fixedly installed on the upper end of the transition connecting plate 37.

[0034] The servo motor can drive the workbench 27 to rotate around the Z axis; the first drive motor 29 drives the workbench ball screw 30 to rotate around the axis through the coupling, thereby causing the first slide 32 to move left and right along the first linear guide 33. When the first slide 32 moves left along the first linear guide 33, the second connecting rod 31 rotates counterclockwise around the first cross roller bearing 34, and the first connecting rod 28 rotates clockwise around the turntable bearing 41, thereby driving the connecting sleeve 36 to rotate clockwise, thereby realizing the swing of the workbench 27 around the Y axis; when the first slide 32 moves right along the first linear guide 33, the movement mode is opposite to the above process; the workbench 27 can rotate in two directions, so that the printer device can achieve a more complex motion trajectory during the printing process, thereby increasing the flexibility of the printer, expanding the types of printed workpieces, and improving the printing range of the equipment, while also reducing the printing time. This structure that swings through the movement of two linear axes avoids the disadvantages of high torque turntables, large size, and poor rigidity, and has the advantages of compact structure and good rigidity.

[0035] The carbon fiber printing device in this embodiment adopts a dual print head structure, which can realize parallel printing of multiple materials. It can simultaneously print carbon fiber and other matrix materials to achieve flexible switching of multiple materials and multiple processes, which significantly improves printing efficiency and accuracy. At the same time, there is no need to frequently switch a single print head, and the path planning is more reasonable, avoiding material waste.

[0036] The Y-axis of the printing device adopts a dual-drive structure, and the structures on the left and right sides are symmetrical. By simultaneously controlling the motors on both sides to drive the ball screws on both sides to move synchronously, the force on the Y-axis direction is more balanced, avoiding the eccentric load caused by uneven force, thereby improving the overall processing accuracy of the printing equipment. The working turntable 3 is driven by two motors respectively, among which the servo motor directly drives the worktable 27 to rotate around the Z-axis; the first drive motor 29 transmission adopts a combination of a connecting rod structure and a ball screw structure, and drives the worktable ball screw 30 to rotate, thereby driving the first slide 32 to move left and right along the first linear guide 33. The first slide 32 drives the connecting sleeve 36 to rotate through the first connecting rod 28 and the second connecting rod 31, so as to realize the swing of the worktable 27 around the Y-axis. The worktable 27 can rotate in two directions, so that the printer device can achieve a more complex motion trajectory during the printing process, which increases the flexibility of the printer, expands the types of printed workpieces, and improves the printing range of the equipment, while also reducing the printing time. This structure that swings through the movement of two linear axes avoids the disadvantages of high torque turntables that are difficult to manufacture, large in size, and have poor rigidity, and has the advantages of compact structure and good rigidity. The laser print head 2 is installed on the Z-axis slide rail mechanism through a swing mechanism. The laser print head 2 can move up and down along the Z-axis, and can also swing slightly along the Y-axis direction to achieve multi-angle printing, expand the processing range and types of printing equipment, and simplify the movement trajectory of a single nozzle in three-dimensional space while ensuring printing flexibility in three-dimensional space, avoiding printing deviation caused by mechanical vibration or insufficient control accuracy, and ensuring printing quality.

[0037] Example 2 In another typical embodiment of the present invention, a printing method is proposed, which uses the double-head carbon fiber printing device in Example 1, as follows: The ultrasonic print head 1 and the laser print head 2 are respectively connected to the corresponding material sources. According to the set program, the X-axis slide mechanism 5 drives the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 to move along the Y-axis slide mechanism 4, and the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 move synchronously along the X-axis slide mechanism 5 to move the ultrasonic print head 1 and the laser print head 2 to the specified initial printing position, start the ultrasonic print head 1 and the laser print head 2, and make the ultrasonic print head 1 and the laser print head 2 move along the set trajectory driven by the X-axis slide mechanism 5, the Y-axis slide mechanism 4 and the first Z-axis slide mechanism 6 and the second Z-axis slide mechanism 7 to achieve multi-material parallel printing and synchronous printing of carbon fiber and other matrix materials; When printing is required at other spatial positions besides the X, Y, and Z axes, the workbench 27 and / or the laser print head 2 can be adjusted according to the requirements. Specifically: When the workbench 27 needs to be adjusted, there are two ways to adjust the workbench 27. The first way is: the servo motor drives the workbench 27 to rotate around the Z axis; The second method is: the first drive motor 29 drives the workbench ball screw 30 to rotate around the axis through the coupling, thereby causing the first slide 32 to move left and right along the first linear guide 33. When the first slide 32 moves left along the first linear guide 33, the second connecting rod 31 rotates counterclockwise around the first cross roller bearing 34, and the first connecting rod 28 rotates clockwise around the turntable bearing 41, thereby driving the connecting sleeve 36 to rotate clockwise, so that the workbench 27 swings around the Y axis. When the first slide 32 moves right along the first linear guide 33, the movement mode is opposite to the above process. It can be understood that the workbench 27 can rotate around the Z axis and swing around the Y axis independently or simultaneously, and the specific settings can be made according to actual needs, and no excessive restrictions are made here.

[0038] When the laser print head 2 needs to be adjusted, the second drive motor 44 works, and the fixed block ball screw 45 is rotated through the belt transmission, and then the second slide 49 is driven to move left and right along the second linear guide through the nut seat. At the same time, the third connecting rod 47 rotates around the fourth cross roller bearing 48, and then drives the laser head fixed block 25 to rotate around the third cross roller bearing 46. The slider and the arc guide rail play a guiding role, so that the laser print head 2 can make a small swing along the Y-axis direction to achieve multi-angle printing. The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A double-head carbon fiber printing device, comprising: The frame (8) is characterized in that a working turntable (3) is fixedly mounted on the frame (8), two Y-axis slide rail mechanisms (4) are symmetrically arranged on both sides of the working turntable (3), an X-axis slide rail mechanism (5) is slidably connected between the two Y-axis slide rail mechanisms (4), two Z-axis slide rail mechanisms are relatively arranged on both sides of the X-axis slide rail mechanism (5), the two Z-axis slide rail mechanisms are synchronously slidably arranged on the X-axis slide rail mechanism (5), an ultrasonic print head (1) is installed on one Z-axis slide rail mechanism, and the other Z-axis slide rail mechanism is connected to a laser print head (2) via a swing mechanism.

2. The double-head carbon fiber printing device according to claim 1, characterized in that: The X-axis slide rail mechanism (5) comprises an X-axis crossbeam (26) whose two ends are slidably connected to two Y-axis slide rail mechanisms (4); X-axis guide rails (10) are fixedly provided on both the front and rear sides of the X-axis crossbeam (26); each X-axis guide rail (10) is slidably connected to a corresponding Z-axis slide rail mechanism via an X-axis slider; the two Z-axis slide rail mechanisms are fixedly connected via an X-axis connecting plate; the X-axis connecting plate is connected to an X-axis ball screw (9) arranged on the top of the X-axis crossbeam (26) via a nut seat; the X-axis ball screw (9) is connected to an X-axis motor (20).

3. The double-head carbon fiber printing device according to claim 1, characterized in that: The ultrasonic print head (1) is fixedly mounted on the ultrasonic head fixing block (15), and the ultrasonic head fixing block (15) is connected to the Z-axis guide rail (22) and the Z-axis ball screw (21) on the corresponding Z-axis slide rail mechanism via a Z-axis slider (23) and a nut seat.

4. The double-head carbon fiber printing device according to claim 1, characterized in that: The swing mechanism comprises a swing head fixing block (24), the swing head fixing block (24) being connected to a Z-axis ball screw (21) and a Z-axis guide rail (22) on a corresponding Z-axis slide rail mechanism via a nut seat and a Z-axis slider (23), an upper arc guide rail (42) and a lower arc guide rail (50) being provided on the side surface of the swing head fixing block (24), the upper arc guide rail (42) and the lower arc guide rail (50) being slidably connected to a laser head fixing block (25) via an upper slider (43) and a lower slider (51) respectively, the laser printing head (2) being fixedly mounted on the laser head fixing block (25), and the laser head fixing block (25) and the swing head fixing block (24) being connected via a driving assembly.

5. The double-head carbon fiber printing device according to claim 4, characterized in that: The driving assembly comprises a fixed block ball screw (45) driven by a motor, the fixed block ball screw (45) is parallel to the X-axis cross beam (26), the fixed block ball screw (45) is arranged in a second linear guide rail, the second linear guide rail is fixedly mounted on the swing head fixed block (24), the fixed block ball screw (45) is connected to a second slide table (49) via a nut seat, a fourth cross roller bearing (48) is rotatably arranged on the second slide table (49), the fourth cross roller bearing (48) is rotatably connected to a third connecting rod (47), and one end of the third connecting rod (47) away from the fourth cross roller bearing (48) is rotatably connected to the laser head fixed block (25) via the third cross roller bearing (46).

6. The double-head carbon fiber printing device according to claim 4, characterized in that: The upper arc-shaped guide rail (42) and the lower arc-shaped guide rail (50) have the same curvature and bending direction. Two upper sliders (43) are slidably provided on the upper arc-shaped guide rail (42). The two upper sliders (43) are symmetrically arranged along the center line of the upper arc-shaped guide rail (42). A lower slider (51) is slidably provided on the lower arc-shaped guide rail (50). The upper sliders (43) and the lower sliders (51) form a triangular support.

7. The double-head carbon fiber printing device according to claim 1, characterized in that: The work turntable (3) comprises a worktable (27) and a base (40), the base (40) being fixedly arranged on a frame (8), a first linear guide rail (33) and a worktable ball screw (30) driven by a motor being installed on the base (40), the worktable ball screw (30) being parallel to an X-axis slide rail mechanism (5), the worktable ball screw (30) and the first linear guide rail (33) being connected to a first slide table (32) via a nut seat and a slider respectively, the first slide table (32) being connected to an L-shaped connecting plate (39) via a swinging assembly, a servo motor being vertically installed on the L-shaped connecting plate (39), and the servo motor being connected to the worktable (27).

8. The double-head carbon fiber printing device according to claim 7, characterized in that: The swing assembly comprises a first connecting rod (28) parallel to the Z axis and a second connecting rod (31) parallel to the X axis in a non-working state, one end of the second connecting rod (31) is rotatably connected to the first slide table (32) via a first cross roller bearing (34), the other end of the second connecting rod (31) is rotatably connected to the lower end of the first connecting rod (28) via a second cross roller bearing (35), the upper end of the first connecting rod (28) is fixedly connected to an L-shaped connecting plate (39) via a connecting sleeve (36), the connecting sleeve (36) is rotatably connected to a base (40), and the connecting sleeve (36) is parallel to the Y axis.

9. A printing method, characterized in that: A double-head carbon fiber printing device as described in any one of claims 1 to 8 is used, specifically as follows: The ultrasonic printing head (1) and the laser printing head (2) are driven by the X-axis slide rail mechanism (5), the Y-axis slide rail mechanism (4) and the Z-axis slide rail mechanism to move along a set track for printing; When printing is required at other spatial positions besides the three axes X, Y, and Z, the workbench (27) and / or the laser printing head (2) are adjusted according to the requirements.

10. The printing method according to claim 9, characterized in that: When the workbench (27) is adjusted: the servo motor drives the workbench (27) to rotate around the Z axis and / or the swing assembly drives the workbench (27) to swing around the Y axis; When adjusting the laser printing head (2), the swing mechanism drives the laser printing head (2) to swing along the Y axis.

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