Multi-energy field micro-nano 3D printing equipment and method

Abstract

The application relates to the field of 3D printing technology, in particular to a multi-energy-field micro-nano 3D printing equipment and method. The equipment can realize multi-material integration and comprises a multi-material pool, a light source system and a substrate capable of relative motion with the multi-material pool. The light source system is used for emitting an UV light path. The substrate and a conductive resin pool, a functional resin pool and a magnetic control resin pool, which can be accessed by the UV light path, are arranged on the multi-material pool. An asymmetric electric field can be generated in the conductive resin pool. Functional materials are arranged in the functional resin pool. The bottom of the magnetic control resin pool is provided with a uniform magnetic field capable of generating a fixed direction and capable of self-rotation. Through the position cooperation of the multi-material pool and the substrate, the step-by-step printing of conductive materials, functional materials and magnetic materials is realized, and the effect of integrating the three materials is achieved.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and more specifically to a multi-energy field micro-nano 3D printing equipment and method. Background Technology

[0002] Photopolymerization 3D printing, also known as stereolithography, uses ultraviolet / visible light of a specific wavelength to selectively irradiate a liquid photosensitive resin, initiating a photopolymerization reaction to achieve layer-by-layer curing and shaping. This technology boasts significant advantages such as high manufacturing precision, strong ability to realize complex structures, and material functionalization. Compared to traditional subtractive manufacturing, photopolymerization 3D printing offers numerous advantages, including high material utilization, no need for molds, lower assembly requirements, and flexible structural design. Currently, photopolymerization 3D printing is widely used in the shaping of micro- and nano-scale structures.

[0003] However, with the rapid development of fields such as biomedicine and precision optics, the requirements for multi-material integration and multi-functional composites are gradually increasing. Traditional methods of achieving multi-material integration and multi-functional composites through assembly are difficult to adapt to micro-nano scale devices and cannot meet the micro-nano scale requirements of fields such as biomedicine and precision optics. Therefore, it is urgent to introduce a high-precision manufacturing equipment and method that can ensure multi-material integration and achieve multi-functional composite integration at the micro-nano scale. Summary of the Invention

[0004] This invention provides a multi-energy field micro-nano 3D printing equipment and method that can achieve multi-material integration, with no less than three material types, and can achieve high-precision manufacturing by integrating multiple functions through multi-energy field control.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A multi-energy field micro / nano 3D printing equipment includes a multi-material pool, a light source system, and a substrate that can move relative to the multi-material pool. The light source system is used to emit UV light. The multi-material pool is provided with a substrate and conductive resin pool, functional resin pool, and magnetron sputtering resin pool that the UV light path can enter. An asymmetric electric field can be generated in the conductive resin pool. Functional materials are provided in the functional resin pool. A uniform magnetic field with a fixed direction is provided at the bottom of the magnetron sputtering resin pool, and the magnetic field can rotate.

[0007] An ultrasonic plate is fixed to the multi-material tank, which acts on the conductive resin tank, the functional resin tank, and the magnetically controlled resin tank.

[0008] A positive electrode plate groove and a negative electrode plate groove are respectively provided on the left and right sides of the conductive resin pool. A positive electrode plate located in the positive electrode plate groove and a negative electrode plate located in the negative electrode plate groove are fixed on the multi-material pool.

[0009] A stepper motor slot is provided on the multi-material pool, and a stepper motor located in the stepper motor slot is fixed on the multi-material pool. The output shaft of the stepper motor is set downward. A first gear is fixed on the output shaft of the stepper motor. A second gear is rotatably connected to the bottom of the multi-material pool and sleeved on the bottom of the magnetic control resin pool. Multiple square magnets are fixed on the second gear. All the square magnets are arranged in a Hellbeck array to generate a uniform magnetic field in a fixed direction. The second gear meshes with the first gear.

[0010] It also includes a projection mirror. The UV light path is horizontally projected. The projection mirror, together with the horizontally movable multi-material tank, can reflect the UV light path to the conductive resin tank, the functional resin tank, and the magnetically controlled resin tank.

[0011] The functional materials are self-lubricating functional particles or shape memory polymers.

[0012] The horizontal position of the multi-material pool is adjusted by the first linear drive mechanism, and the vertical position of the base is adjusted by the first and second linear drive mechanisms.

[0013] The first linear drive mechanism is a direct-drive lead screw electric mechanism with a slider guide rail, which fixes the multi-material pool on the slider; or, the first linear drive mechanism includes a lead screw mechanism, which includes two first support platforms, one on the left and one on the right. A servo motor is fixed to the upper end of the first support platform on the left, and a coupling is fixed to the output shaft of the servo motor. The coupling is fixed to the left end of the lead screw. Two lead screw support seats are fixed to the two first support platforms respectively. The left and right parts of the lead screw are rotatably connected to the two lead screw support seats respectively. There are two lead screw mechanisms, one in front and one behind. A transmission nut is fixed to the front and rear sides of the left and right ends of the multi-material pool. The two transmission nuts on the front side are screw-driven with the lead screw on the front side, and the two transmission nuts on the rear side are screw-driven with the lead screw on the rear side. The two lead screws pass through the multi-material pool; the second linear drive mechanism is a lead screw-driven linear slide module, and the base is fixed to the slide of the second linear drive mechanism.

[0014] A cleaning tank is installed above the multi-material tank, and the substrate can be cleaned in the cleaning tank.

[0015] A multi-energy field micro-nano 3D printing method, characterized in that it uses the above-mentioned multi-energy field micro-nano 3D printing equipment;

[0016] Step 1: After thoroughly mixing the conductive particles with the substrate photosensitive resin, the functional particles with the substrate photosensitive resin, and the magnetic particles with the substrate photosensitive resin, they are respectively loaded into the conductive resin tank, the functional resin tank, and the magnetic control resin tank.

[0017] Step 2: An asymmetric electric field is generated in the conductive resin pool to control the directional arrangement of conductive particles and regulate the directional arrangement of magnetic particles, thereby generating an acoustic field in the conductive resin pool, functional resin pool, and magnetically controlled resin pool to ensure uniform particle distribution.

[0018] Step 3: According to the requirements of multi-material printing of the target part, the substrate is made to reach the corresponding conductive resin pool, functional resin pool and magnetron resin pool. The layered slice images of the three materials are projected and exposed in sequence to finally form a high-precision multi-energy field 3D printed sample.

[0019] The beneficial effects of the multi-energy field micro / nano 3D printing equipment and method of the present invention are as follows:

[0020] By coordinating the positions of multiple material pools with the substrate, conductive materials, functional materials, and magnetic materials are printed in stages, achieving the integration of the three materials into one.

[0021] An electric field generating device is installed in the conductive resin tank. A magnetic field generating device is installed in the magnetized resin tank. The conductive material contains conductive particles, which can generate an electric field through the electric field generating device to achieve the directional alignment of the conductive particles, further enabling specific functions such as encoding. The magnetic material contains magnetic particles, which can generate a uniform magnetic field through the magnetic field generating device to achieve the directional arrangement of the magnetic particles, further enabling specific functions such as magnetic drive. Functional materials contain other functional particles such as polyimide, enabling specific functions such as surface self-lubrication.

[0022] This invention achieves uniform distribution of functional particles in the photosensitive resin substrate by placing an ultrasonic plate directly below the resin pool. After printing a functional material, it can promptly and efficiently clean up excess material remaining on the sample surface, significantly improving the manufacturing precision of micro-nano structures. It overcomes the problems of agglomeration and sedimentation of functional particles such as conductive and magnetic particles in the photosensitive resin substrate in the prior art, which seriously affect the molding precision. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a multi-energy field micro / nano 3D printing equipment.

[0024] Figure 2 This is a schematic diagram of the multi-material tank structure;

[0025] Figure 3 This is a schematic diagram of the magnetic field control device.

[0026] Figure 4 This is a schematic diagram illustrating the function of the magnetically controlled resin tank;

[0027] Figure 5 This is a schematic diagram illustrating the function of the conductive resin pool;

[0028] Figure 6 This is a schematic diagram illustrating the function of the functional resin tank;

[0029] Figure 7 This is a flowchart of the 3D printing process using three materials.

[0030] In the diagram: 1. Multi-material tank; 1-1. Cleaning tank; 1-2. Conductive resin tank; 1-3. Functional resin tank; 1-4. Magnetically controlled resin tank; 1-5. Ultrasonic plate; 1-6. Positive electrode slot; 1-7. Negative electrode slot; 1-8. Positive electrode plate; 1-9. Negative electrode plate; 1-10. Stepper motor slot; 1-11. Stepper motor; 1-12. First gear; 1-13. Second gear; 1-14. Square magnet; 1-15. Functional material; -16, Magnetic particles; 1-17, Conductive particles; 2, First linear drive mechanism; 2-1, First support platform; 2-2, Servo motor; 2-3, Coupling; 2-4, Lead screw; 2-5, Lead screw support seat; 2-6, Transmission nut; 2-7, Projection mirror; 3, Base; 4, Second linear drive mechanism; 5, Light source system; 5-1, UV light path; 6, High-precision multi-energy field 3D printed sample; 7, Control system; 8, Main power supply; 9, Electrode power supply. Detailed Implementation

[0031] A multi-energy field micro / nano 3D printing equipment, reference Figure 1 and 2 It includes a multi-material pool 1 and a first linear drive mechanism 2 that drives the multi-material pool 1 to move horizontally. The multi-energy field refers to the sound field, electric field and magnetic field.

[0032] Among them, the multi-material tank 1 is provided with a cleaning tank 1-1, a conductive resin tank 1-2, a functional resin tank 1-3, and a magnetically controlled resin tank 1-4 from left to right.

[0033] Sound field arrangement: Four ultrasonic plates 1-5 are fixed to the bottom of the multi-material tank 1, which are respectively located below the cleaning tank 1-1, the conductive resin tank 1-2, the functional resin tank 1-3 and the magnetically controlled resin tank 1-4.

[0034] Electric field arrangement: Positive electrode slots 1-6 and negative electrode slots 1-7 are respectively arranged on the left and right sides of the conductive resin tank 1-2 in the multi-material tank 1. A positive electrode 1-8 is fixed in the positive electrode slot 1-6, and a negative electrode 1-9 is fixed in the negative electrode slot 1-7. The positive electrode 1-8 and negative electrode 1-9 form a certain angle with the Z-axis direction, and the angle is acute. Figure 5 As shown, under the action of an electric field, the conductive particles 1-17 in the high-precision multi-energy field 3D printed sample 6 will be oriented and arranged. Under the action of the ultrasonic plate 1-5, the conductive particles 1-17 are uniformly distributed in the conductive resin pool 1-2.

[0035] Magnetic field arrangement: A stepper motor slot 1-10 is provided on the multi-material pool 1. A stepper motor 1-11 is fixedly connected to the multi-material pool 1, located within the stepper motor slot 1-10. The output shaft of the stepper motor 1-11 faces downwards, and a first gear 1-12 is fixedly connected to the output shaft of the stepper motor 1-11. The inner ring of a bearing is fixedly connected to the bottom of the multi-material pool 1. The bearing is fitted into the bottom of the magnetized resin pool 1-4. The outer ring of the bearing is fixedly connected to the inner ring of a second gear 1-13. The second gear 1-13 is located at the bottom of the magnetized resin pool 1-4, and the magnetized resin pool 1-4 is located at the center of the second gear 1-13. Multiple square magnets 1-14 are fixed on the second gear 1-13. All the square magnets 1-14 are arranged in a Hellbeck array to generate a uniform magnetic field with a fixed direction. As the second gear 1-13 rotates, the direction of the uniform magnetic field also changes accordingly. The second gear 1-13 meshes with the first gear 1-12 to achieve a transmission connection. When the stepper motor 1-11 drives the first gear 1-12 to rotate, the first gear 1-12 then drives the second gear 1-13 to rotate. Figure 4 Under the action of a uniform magnetic field, the magnetic particles 1-16 in the high-precision multi-energy field 3D printed sample 6 will be oriented and arranged. Under the action of the ultrasonic plate 1-5, the magnetic particles 1-16 are uniformly distributed in the magneto-controlled resin pool 1-4.

[0036] Embodiment 1 of the first linear drive mechanism 2:

[0037] For a direct-drive screw-type electric mechanism, such as a slider guide rail type, the multi-material pool 1 can be fixed on the slider.

[0038] Embodiment 2 of the first linear drive mechanism 2:

[0039] The system includes a lead screw mechanism, comprising two first support platforms 2-1, one on the left and one on the right. A servo motor 2-2 is fixedly connected to the upper end of the left first support platform 2-1. A coupling 2-3 is fixedly connected to the output shaft of the servo motor 2-2, and the coupling 2-3 is fixedly connected to the left end of the lead screw 2-4. Two lead screw support seats 2-5 are fixedly connected to the two first support platforms 2-2 respectively. The left and right parts of the lead screw 2-4 are rotatably connected to the two lead screw support seats 2-5 respectively. Two lead screw mechanisms are arranged one in front of the other, forming a double lead screw transmission mechanism, which improves the stability and accuracy of driving the multi-material tank 1. A transmission nut 2-6 is fixed to the front and rear sides of the left and right ends of the multi-material pool 1. The two transmission nuts 2-6 on the front side are screwed to the lead screw 2-4 on the front side, and the two transmission nuts 2-6 on the rear side are screwed to the lead screw 2-4 on the rear side. The two lead screws 2-4 pass through the multi-material pool 1. When the two servo motors 2-2 are started synchronously, the two lead screws 2-4 rotate synchronously, thereby driving the transmission nuts 2-6 to move left and right. The transmission nuts 2-6 drive the multi-material pool 1 to move left and right.

[0040] Further explanation includes a base 3 and a second linear drive mechanism 4 for adjusting the lifting and lowering of the base 3. The second linear drive mechanism 4 can be the same as the first linear drive mechanism 2, or preferably a linear slide module with a lead screw drive. The base 3 is fixed to the slide of the second linear drive mechanism 4.

[0041] It also includes a light source system 5, and adds a second linear drive mechanism 4, with projection mirrors 2-7 fixed on the slide of the second linear drive mechanism 4. Figure 1 The second linear drive mechanism 4 is located on the right side, and the first second linear drive mechanism 4 is located on the left side. The motors of the two second linear drive mechanisms 4 are mounted on top.

[0042] The UV light path 5-1 generated by the light source system 5 can span over the cleaning tank 1-1, the conductive resin tank 1-2, the functional resin tank 1-3, and the magnetron resin tank 1-4. The projection mirror 2-7 reflects the UV light path 5-1 onto the multi-material tank 1. The horizontal movement of the multi-material tank 1 is to ensure that the UV light path 5-1 passes through any one of the conductive resin tank 1-2, the functional resin tank 1-3, and the magnetron resin tank 1-4. The height of the projection mirror 2-7 is adjusted by the second linear drive mechanism 4 to maintain the same height as the optomechanical system of the light source system 5.

[0043] After the multi-material tank 1 moves horizontally, any one of the tanks, such as the cleaning tank 1-1, the conductive resin tank 1-2, the functional resin tank 1-3, and the magnetically controlled resin tank 1-4, can reach directly below the substrate 3. The substrate 3 is repeatedly raised and lowered by the second linear drive mechanism 4, so that the substrate 3 can enter any one of the tanks.

[0044] The target multi-material printed part requires continuous alternating bonding with the substrate 3. After the UV light path 5-1 cures the various doped photosensitive resins, a high-precision multi-energy field 3D printed sample 6 is formed on the substrate 3. When the various doped photosensitive resins are poured into the conductive resin pool 1-2, the functional resin pool 1-3, and the magnetron resin pool 1-4 respectively, the ultrasonic plate 1-5 starts to work to ensure that the functional particles in the doped photosensitive resins are uniformly dispersed and to improve the manufacturing accuracy.

[0045] In terms of control, it also includes a control system 7 and a main power supply 8 that supplies power to the control system 7. The electrode power supply 9 supplies power to the positive electrode 1-8 and the negative electrode 1-9. After receiving the setting parameters, the control system 7 controls the ultrasonic plate 1-5, the electrode power supply 9, the light source system 5, the servo motor 2-2, the stepper motor 1-11, and the motor of the second lifting mechanism. The main power supply 8 supplies power to the electrode power supply 9.

[0046] like Figure 1As shown, a vibration damping platform can be added to fix the base structure of the first linear drive mechanism 2, such as the first support platform 2-1, the base structure of the second linear drive mechanism 4, the light source system 5, the main power supply 8, and the electrode plate power supply 9 onto the vibration damping platform.

[0047] like Figure 2 As shown, the inner end faces of the conductive resin pool 1-2, the functional resin pool 1-3, and the magnetically controlled resin pool 1-4 converge from top to bottom to form an inclined surface, and the bottom of the inclined surface has a rounded corner surface, which facilitates the cleaning of photosensitive resin doped in the resin pool.

[0048] A multi-energy field micro / nano 3D printing method, comprising the following steps:

[0049] Step 1: Use computer modeling software to create a 3D model of the target multi-material printed part, and perform layer slicing processing on the 3D model to obtain layer slicing image files of the three materials.

[0050] Step 2: Conductive particles 1-17 are mixed evenly with the substrate photosensitive resin, other functional particles such as polyimide are mixed with the substrate photosensitive resin, and magnetic particles 1-16 are mixed with the substrate photosensitive resin by mechanical grinding. After thorough mixing, the mixture is subjected to vacuum treatment for 30 minutes to eliminate air bubbles, and then placed into conductive resin tank 1-2, functional resin tank 1-3, and magnetron resin tank 1-4 respectively. Anhydrous ethanol is then placed into cleaning tank 1-1.

[0051] Step 3: Turn on the main power supply 8, set the parameters using the computer, and control the electrode plate power supply 9 through the control system 7 to supply power to the positive electrode plate 1-8 and the negative electrode plate 1-9, generating an asymmetric electric field in the conductive resin pool 1-2, controlling the directional arrangement of the conductive particles 1-17. Control the stepper motor 1-11 to drive the first gear 1-12 to drive the second gear 1-13 to rotate and generate a uniform magnetic field, adjusting the directional arrangement of the magnetic particles 1-16, and control the ultrasonic plate 1-5 to generate a sound field on the conductive resin pool 1-2, the functional resin pool 1-3, and the magnetically controlled resin pool 1-4 to ensure uniform particle distribution.

[0052] Step 4: According to the requirements of the target multi-material printing part, the control system 7 controls the first linear drive mechanism 2 and the second linear drive mechanism 4 to ensure that when the functional area of ​​the target multi-material printing part is printed, the substrate 3 reaches the corresponding pool, and the layered slice images of the three materials are projected and exposed in sequence to finally form a high-precision multi-energy field 3D printing sample 6.

[0053] Regarding step four, specifically:

[0054] When the printed layer of the target multi-material 3D printed part reaches the magnetic field-assisted functional area, the control system 7 controls the first and second linear drive mechanisms 4 to bring the substrate 3 to a safe height. Then, the control system 7 controls the first linear drive mechanism 2 to move the multi-material pool 1 in a translational motion, moving the magnetron resin pool 1-4 directly below the substrate 3. The control system 7 then controls the first and second linear drive mechanisms 4 to move the substrate 3 downwards into the photosensitive resin containing magnetic particles 1-16. The control system 7 controls the stepper motor 1-11 to drive the first gear 1-12, causing the second gear 1-13 to rotate, allowing the square magnet 1-14 to generate a uniform magnetic field, causing the magnetic particles 1-16 to oriented. Under the action of the UV light path 5-1, the high-precision multi-energy field 3D printed sample 6 achieves the printing of the corresponding functional layer.

[0055] When the printed layer of the target multi-material 3D printed part reaches the electric field-assisted functional area, the control system 7 moves the substrate 3 upward to a safe height, causing the multi-material pool 1 to translate, moving the conductive resin pool 1-2 directly below the substrate 3, and then moving the substrate 3 downward into the photosensitive resin doped with conductive particles 1-17. The control system 7 controls the electrode plate power supply 9 to supply power to the positive electrode plate 2 and the negative electrode plate 4, causing them to generate a non-uniform electric field, which causes the conductive particles 1-17 to align in an orientation. Under the action of the UV light path 5-1, the high-precision multi-energy field 3D printed sample 6 is printed with the corresponding functional layer.

[0056] When the printed layer of the target multi-material 3D printed part reaches the electric field-assisted functional region, the substrate 3 is raised to a safe height. The functional resin pool 1-3, containing functional materials 1-15 and other functional particles such as self-lubricating agents, moves to directly below the substrate 3, after which the substrate 3 is lowered into the functional resin pool 1-3. Under the action of the UV light path 5-1, the functional layer corresponding to the high-precision multi-energy field 3D printed sample 33 is printed.

[0057] In the above process, before the target multi-material printed part moves from the previous printing layer to the next printing layer, the substrate 3 is brought to a safe height, and the cleaning tank 1-1 is moved to directly below the substrate 3. Then, the substrate 3 is lowered into anhydrous ethanol. Subsequently, the ultrasonic plate 1-5 under the cleaning tank 1-1 starts working to ensure that excess doped photosensitive resin printed in the previous printing layer is cleaned before entering the next printing layer, ensuring the manufacturing accuracy of the high-precision multi-energy field 3D printed sample 6.

[0058] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention are also within the protection scope of the present invention.

Claims

1. A multi-energy field micro / nano 3D printing equipment, characterized in that, It includes a multi-material pool, a light source system, and a substrate that can move relative to the multi-material pool. The light source system is used to emit UV light. The multi-material pool is provided with a substrate and conductive resin pool, functional resin pool and magnetically controlled resin pool that the UV light path can enter. An asymmetric electric field can be generated in the conductive resin pool. Functional materials are provided in the functional resin pool. A uniform magnetic field is provided at the bottom of the magnetically controlled resin pool and the direction of the magnetic field can be changed. An ultrasonic plate is fixedly attached to the multi-material tank, acting on the conductive resin tank, the functional resin tank, and the magnetically controlled resin tank. A positive electrode plate groove and a negative electrode plate groove are respectively provided on the left and right sides of the conductive resin pool. A positive electrode plate located in the positive electrode plate groove and a negative electrode plate located in the negative electrode plate groove are fixed on the multi-material pool. A stepper motor slot is provided on the multi-material pool, and a stepper motor located in the stepper motor slot is fixed on the multi-material pool. The output shaft of the stepper motor is set downward. A first gear is fixed on the output shaft of the stepper motor. A second gear is rotatably connected to the bottom of the multi-material pool and sleeved on the bottom of the magnetic control resin pool. Multiple square magnets are fixed on the second gear. All the square magnets are arranged in a Hellbeck array to generate a uniform magnetic field. The second gear meshes with the first gear. It also includes a projection mirror. The UV light path is horizontally projected. The projection mirror, together with the horizontally movable multi-material tank, can reflect the UV light path to the conductive resin tank, the functional resin tank, and the magnetically controlled resin tank. The multi-material pool is adjusted to a horizontal position by a first linear drive mechanism, and the base is adjusted to a vertical position by a second linear drive mechanism.

2. The multi-energy field micro / nano 3D printing equipment according to claim 1, characterized in that, The functional materials are self-lubricating functional particles or shape memory polymers.

3. The multi-energy field micro / nano 3D printing equipment according to claim 1, characterized in that, The first linear drive mechanism is a slider-guided direct-drive screw-type electric mechanism that fixes the multi-material pool on the slider; or, the first linear drive mechanism includes a screw mechanism, which includes two first support platforms, one on the left and one on the right. A servo motor is fixed to the upper end of the first support platform on the left, and a coupling is fixed to the output shaft of the servo motor. The coupling is fixed to the left end of the screw. Two screw support seats are fixed to the two first support platforms respectively. The left and right parts of the screw are rotatably connected to the two screw support seats respectively. There are two screw mechanisms, one in front and one behind. A transmission nut is fixed to the front and rear sides of the left and right ends of the multi-material pool. The two transmission nuts on the front side are screw-driven with the screw on the front side, and the two transmission nuts on the rear side are screw-driven with the screw on the rear side. The two screws pass through the multi-material pool; the second linear drive mechanism is a screw-driven linear slide module, and the base is fixed to the slide of the second linear drive mechanism.

4. The multi-energy field micro / nano 3D printing equipment according to claim 1, characterized in that, A cleaning tank is installed above the multi-material tank, and the substrate can be cleaned in the cleaning tank.

5. A multi-energy field micro / nano 3D printing method, characterized in that, Use the multi-energy field micro-nano 3D printing equipment as described in any one of claims 1 to 4; Step 1: After thoroughly mixing the conductive particles with the substrate photosensitive resin, the functional particles with the substrate photosensitive resin, and the magnetic particles with the substrate photosensitive resin, they are respectively loaded into the conductive resin tank, the functional resin tank, and the magnetic control resin tank. Step 2: An asymmetric electric field is generated in the conductive resin pool to control the directional arrangement of conductive particles and regulate the directional arrangement of magnetic particles, thereby generating an acoustic field in the conductive resin pool, functional resin pool, and magnetically controlled resin pool to ensure uniform particle distribution. Step 3: According to the requirements of multi-material printing of the target part, the substrate is made to reach the corresponding conductive resin pool, functional resin pool and magnetron resin pool. The layered slice images of the three materials are projected and exposed in sequence to finally form a high-precision multi-energy field 3D printed sample.

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