A 3D printing device and method for polymer smart materials

Abstract

This application discloses a 3D printing device and method for polymer smart materials, belonging to the field of material manufacturing devices. A Y-axis motion mechanism is respectively arranged on both sides of the base of the device; the lower end of the gantry is connected to a Y-axis motion mechanism; two X-axis motion mechanisms are arranged laterally on the upper end of the gantry; a first Z-axis motion mechanism is connected to one X-axis motion mechanism; a first mounting plate is arranged on each first Z-axis motion mechanism; at least two second Z-axis motion mechanisms are arranged on each first mounting plate; each second Z-axis motion mechanism is equipped with one of the following: a nozzle mechanism, a light source module, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe; the heating structure and conveying structure of the worktable can be interchangeably arranged on the base, and the roller brush structure is arranged on the heating structure or the conveying structure. This application has wider applicability, enabling multi-material composite printing or multi-functional collaborative processing, and continuous operation of printing and transmission.

Description

Technical Field

[0001] This application relates to the field of materials manufacturing equipment technology, and in particular to a 3D printing device and method for polymer smart materials. Background Technology

[0002] As representatives of fourth-generation materials, polymeric smart materials such as liquid crystal elastomers possess the ability to dynamically respond to external stimuli from multiple physical fields, including sound, light, heat, force, and magnetism, and have been widely applied in fields such as flexible electronics, biomedicine, and adaptive robotics. Existing polymeric smart material printing devices can achieve controllable deformation of materials in the spatiotemporal dimensions (such as self-folding structures and topological reconstruction) by controlling material formulations (e.g., shape memory polymer / hydrogel composite systems), hot stage gradient temperature (adjustable from 50℃ to 220℃), and dynamic printing paths (curvature accuracy up to 0.1mm).

[0003] However, existing printing devices mostly use a single or a small number of fixed nozzles, and the functions of the nozzle components are fixed. This makes it impossible to flexibly adapt to the characteristics of polymer smart materials, resulting in limited applicability. They cannot achieve multi-material composite printing or multi-functional collaborative processing, and the prepared polymer smart materials have certain limitations, failing to meet the integrated preparation requirements of polymer smart materials. Furthermore, the hot stage is not replaceable and cannot achieve continuous printing and transfer operations, causing the molded size of polymer smart materials to be constrained by the physical space of the device. Summary of the Invention

[0004] This application provides a 3D printing device and method for polymer smart materials, which solves the problems of limited applicability of existing devices, inability to achieve multi-material composite printing or multi-functional collaborative processing, limitations in the prepared polymer smart materials, and difficulty in meeting the integrated preparation requirements of polymer smart materials. Furthermore, the non-replaceable hot stage and the inability to achieve continuous printing and transfer operations result in the molding size of polymer smart materials being constrained by the physical space of the device.

[0005] To achieve the above objectives, the technical solution of this invention is as follows:

[0006] In a first aspect, embodiments of the present invention provide a 3D printing device for polymer smart materials, including a base, an X-axis motion mechanism, a Y-axis motion mechanism, a first Z-axis motion mechanism, a second Z-axis motion mechanism, a gantry, a first mounting plate, a worktable, and a nozzle mechanism;

[0007] A Y-axis motion mechanism is provided on each side of the base;

[0008] The lower end of the gantry frame is connected to one of the Y-axis motion mechanisms;

[0009] Two X-axis motion mechanisms are arranged laterally at the upper end of the gantry frame;

[0010] One of the first Z-axis motion mechanisms is connected to one of the X-axis motion mechanisms;

[0011] A first mounting plate is provided on each of the first Z-axis motion mechanisms;

[0012] At least two second Z-axis motion mechanisms are provided on each of the first mounting plates;

[0013] Each of the second Z-axis motion mechanisms is equipped with one of the following: a nozzle mechanism, a light source module, a heating module, an electrostatic high voltage module, a magnetic module, or a height probe;

[0014] The worktable includes a roller brush structure, a heating structure, or a conveying structure;

[0015] The heating structure and the conveying structure can be alternatively disposed on the base;

[0016] The roller brush structure is disposed on the heating structure or the conveying structure, and can perform scraping and orientation of the mixed solution sprayed by the nozzle mechanism onto the worktable. Then, the appropriate module is selected to work for shaping based on the molding characteristics of the prepared polymer smart material, and the polymer smart material is obtained.

[0017] In conjunction with the first aspect, in one possible implementation, the nozzle mechanism includes a first multi-functional clamp, a second multi-functional clamp, a material cylinder, and a nozzle;

[0018] The first multi-functional clamp is mounted on the second Z-axis motion mechanism and clamps the material cylinder;

[0019] The second multi-functional clamp is disposed at the front end of the first multi-functional clamp and clamps the nozzle;

[0020] The feed cylinder is connected to the nozzle.

[0021] In conjunction with the first aspect, in one possible implementation, the nozzle mechanism includes a first mounting bracket, a first drive structure, a first driving gear, a first driven gear, a first threaded screw, a first pressure block, a first material cylinder, a second drive structure, a second driving gear, a second driven gear, a second threaded screw, a second pressure block, a second material cylinder, a mixing nozzle, and a needle.

[0022] The first mounting frame includes a top plate, a bottom plate, and a first support column;

[0023] The top plate and the bottom plate are arranged in parallel;

[0024] Four first pillars are arranged in a parallel array between the top plate and the bottom plate;

[0025] The first drive structure is located below the base plate, and the output shaft extends out of the base plate;

[0026] The first driving gear is disposed at the extended end of the output shaft of the first drive structure;

[0027] The first driven gear meshes with the first driving gear and is sleeved on the first threaded screw;

[0028] The first pressure block is located at the bottom of the first threaded screw and extends into the first material cylinder;

[0029] The second drive structure is located below the base plate, and the output shaft extends out of the base plate;

[0030] The second driving gear is disposed at the extended end of the output shaft of the second drive structure;

[0031] The second driven gear meshes with the second driving gear and is sleeved on the second threaded screw;

[0032] The second pressure block is located at the bottom of the second threaded screw and extends into the second material cylinder;

[0033] The bottom of the first barrel and the bottom of the second barrel are both connected to the upper end of the mixing nozzle;

[0034] The lower end of the mixing nozzle is connected to the upper end of the needle.

[0035] In conjunction with the first aspect, in one possible implementation, the nozzle mechanism further includes a second mounting plate and a second support column;

[0036] Four second pillars are arranged in an array on the base plate;

[0037] The second mounting plate is disposed above the second support column;

[0038] The first threaded screw passes through the second mounting plate and is rotatably connected to the second mounting plate;

[0039] The second driven gear is disposed on the second mounting plate;

[0040] The second threaded screw passes through the top plate and is rotatably connected to the top plate;

[0041] The second mounting plate has a groove on the side facing the first drive gear and the second drive gear to avoid the first drive gear and the second drive gear.

[0042] In conjunction with the first aspect, in one possible implementation, the roller brush structure includes a platform pressure plate, a walking assembly, a first gantry frame, a height adjustment assembly, a first support plate, a fixing plate, a roller, a wheel, and a first drive assembly;

[0043] The two fixing plates are arranged in parallel on both sides of the first support plate;

[0044] The two ends of the roller are respectively rotatably mounted on the two fixed plates;

[0045] The roller is sleeved on the roller shaft;

[0046] The first drive component is connected to one end of the roller;

[0047] At least one height adjustment component is disposed on the first upper plate of the first portal frame, passes through the first upper plate, and its lower end is connected to the first support plate;

[0048] The two first side plates of the first portal frame are connected to the walking assembly, which is mounted on the platform pressure plate. The walking assembly drives the first portal frame to move along the platform pressure plate.

[0049] In conjunction with the first aspect, in one possible implementation, the brush structure further includes a second portal frame and fixing bolts;

[0050] The second portal frame is disposed between the first portal frame and the support plate;

[0051] The upper part of each of the two side plates of the first portal frame is provided with a vertical strip-shaped first through groove;

[0052] The upper part of the two second side plates of the second portal frame is provided with a plurality of fixing holes arranged in a vertical straight array, and the lower part is provided with a vertical strip-shaped second through groove.

[0053] The two ends of the roller are respectively rotatably disposed in a second through groove;

[0054] Two fixing bolts pass through one of the first through slots and are then fixed to the fixing holes at the corresponding positions.

[0055] In conjunction with the first aspect, in one possible implementation, the roller brush structure further includes a fixing post and a first elastic element;

[0056] The support plate is provided with at least one first through hole;

[0057] The first top plate of the second portal frame is provided with second through holes in number and position corresponding to the first through holes;

[0058] A fixing post is respectively installed in the first through hole and the second through hole;

[0059] Each first through hole is provided with a first elastic element, and the two ends of the first elastic element are respectively fixed to a fixed post.

[0060] In conjunction with the first aspect, in one possible implementation, the conveying structure includes a second mounting bracket, a second drive assembly, a drive roller, a driven roller, a conveyor belt, a support rod, a second support plate, bolts, and a first heating plate;

[0061] The driving roller and the driven roller are arranged in parallel on the second mounting frame;

[0062] The second drive component is connected to the drive roller;

[0063] The conveyor belt is fitted onto the driving roller and the driven roller;

[0064] At least one of the support rods is disposed on the second mounting bracket and located within the internal space of the conveyor belt;

[0065] The second support plate is placed on the support rod;

[0066] A bolt running from bottom to top is installed at each of the four corners of the second support plate;

[0067] The first heating plate is disposed on the top surface of the bolt.

[0068] In conjunction with the first aspect, in one possible implementation, the heating structure includes a placement plate, heat insulation cotton, a second heating plate, and a cover.

[0069] The placement plate is disposed on the base;

[0070] The heat insulation cotton is disposed on the placement plate;

[0071] The second heating plate is placed on the heat insulation cotton;

[0072] The cover is fastened above the second heating plate, and the lead wire of the second heating plate passes through the cover.

[0073] Secondly, another embodiment of the present invention provides a 3D printing method for polymer smart materials, implemented using the aforementioned 3D printing apparatus for polymer smart materials, comprising:

[0074] According to actual needs, one of the following can be set on the second Z-axis motion mechanism: nozzle mechanism, light source module, heating module, electrostatic high voltage module, magnetic module or height probe, and at least two nozzle mechanisms must be ensured.

[0075] A mixed solution required for preparing polymer smart materials is placed in each nozzle mechanism;

[0076] The X-axis motion mechanism, Y-axis motion mechanism, first Z-axis motion mechanism, and second Z-axis motion mechanism move to spray multiple mixed solutions onto the worktable through the nozzle mechanism according to the pre-designed printing path. The sprayed mixed solutions are oriented by the roller brush structure. The appropriate module is selected to work and shape the polymer smart material according to the molding characteristics of the prepared polymer smart material to obtain the polymer smart material.

[0077] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0078] The 3D printing device for polymer smart materials provided in this invention has a nozzle mechanism, a point light source, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe mounted on a second Z-axis motion mechanism, which can move along the Z-axis. The second Z-axis motion mechanism is mounted on a first mounting plate, which in turn is mounted on a first Z-axis motion mechanism. One first Z-axis motion mechanism is connected to an X-axis motion mechanism, which is located at the upper end of a gantry. The lower end of the gantry is connected to a Y-axis motion mechanism located on each side of a base. A worktable is mounted on the base. Thus, the nozzle mechanism, point light source, heating module, electrostatic high-voltage module, magnetic module, or height probe can perform three-dimensional movements relative to the base in the OX, OY, and OZ directions, thereby achieving 3D printing. The device in this embodiment of the invention is equipped with one of the following on each second Z-axis motion mechanism: a nozzle mechanism, a point light source, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe. This allows for simultaneous operation of multiple nozzles. Furthermore, the device can be configured with the required functions on the second Z-axis motion mechanism according to the material properties, thus providing the necessary conditions for the preparation of polymer smart materials. The device has wider applicability, enabling multi-material composite printing or multi-functional collaborative processing, resulting in a greater variety of polymer smart materials and meeting the integrated preparation requirements of polymer smart materials. The heating and conveying structures can be interchangeably mounted on the base. Replacing the heating structure with a conveying mechanism enables "infinitely" long printing capabilities, allowing for continuous printing and conveying operations. This removes the physical space constraints on the material forming size. Attached Figure Description

[0079] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0080] Figure 1Schematic diagram of the structure of the 3D printing device for polymer smart materials provided in the embodiments of this application. Figure 1 ;

[0081] Figure 2 Schematic diagram of the structure of the 3D printing device for polymer smart materials provided in the embodiments of this application. Figure 2 ;

[0082] Figure 3 A partial structural diagram of the 3D printing device for polymer smart materials provided in the embodiments of this application. Figure 1 ;

[0083] Figure 4 A partial structural diagram of the 3D printing device for polymer smart materials provided in the embodiments of this application. Figure 2 ;

[0084] Figure 5 A partial structural diagram of the 3D printing device for polymer smart materials provided in the embodiments of this application. Figure 3 ;

[0085] Figure 6 Schematic diagram of the nozzle mechanism provided in the embodiments of this application Figure 1 ;

[0086] Figure 7 Schematic diagram of the nozzle mechanism provided in the embodiments of this application Figure 2 ;

[0087] Figure 8 A schematic diagram of the roller brush structure provided in the embodiments of this application. Figure 2 ;

[0088] Figure 9 A schematic diagram of the roller brush structure provided in the embodiments of this application. Figure 2 ;

[0089] Figure 10 This is a schematic diagram of the transmission structure provided in the embodiments of this application;

[0090] Figure 11 A schematic diagram of the heating structure provided in the embodiments of this application. Figure 1 ;

[0091] Figure 12 A schematic diagram of the heating structure provided in the embodiments of this application. Figure 2 ;

[0092] Figure 13 Illustration provided for Embodiment 4 of this application Figure 1 ;

[0093] Figure 14 Illustration provided for Embodiment 4 of this application Figure 2 ;

[0094] Figure 15 This is a schematic diagram provided for Embodiment 8 of this application;

[0095] Figure 16 Illustrations provided for 9 examples of embodiments of this application Figure 1 ;

[0096] Figure 17 Illustrations provided for 9 examples of embodiments of this application Figure 2 ;

[0097] Figure 18 Illustration provided for Embodiment 10 of this application Figure 1 ;

[0098] Figure 19 Illustration provided for Embodiment 10 of this application Figure 2 ;

[0099] Figure 20 This is a schematic diagram provided for Embodiment 13 of this application.

[0100] Icons: 1-Base; 2-X-axis motion mechanism; 21-U-shaped frame; 22-Second guide groove; 3-Y-axis motion mechanism; 4-First Z-axis motion mechanism; 5-Second Z-axis motion mechanism; 6-Gantry frame; 61-U-shaped guide rail; 7-First mounting plate; 8-Worktable; 81-Roller brush structure; 81A-Platform pressure plate; 81B-Traveling assembly; 81Ba-Second motor; 81Bb-Second driving pulley; 81Bc-Second driven pulley; 81Bd-Second belt; 81Be-First spindle; 81Bf-Second spindle; 81Bg- Third driven pulley; 81Bh - Fourth driven pulley; 81Bi - Third belt; 81Bj - Inverted T-shaped guide groove; 81Bk - Guide block; 81C - First portal frame; 81D - Height adjustment assembly; 81E - First support plate; 81F - Fixing plate; 81G - Roller; 81H - Roller; 81I - First drive assembly; 81Ia - First motor; 81Ib - First drive pulley; 81Ic - First driven pulley; 81Id - First belt; 81J - Second portal frame; 81K - Fixing bolt; 81L - Fixing column; 81 M - First elastic element; 82 - Heating structure; 821 - Placement plate; 822 - Heat insulation cotton; 823 - Second heating plate; 824 - Cover; 825 - Cable clamping box; 83 - Conveying structure; 83A - Second mounting bracket; 83B - Driving roller; 83C - Driven roller; 83D - Conveyor belt; 83E - Support rod; 83F - Second support plate; 83G - Bolt; 83H - First heating plate; 83I - Second elastic element; 9 - Nozzle mechanism; 91 - First multi-functional clamp; 92 - Second multi-functional clamp; 93 - Material cylinder; 94 - Nozzle ; 9A-First mounting bracket; 9A1-Top plate; 9A2-Bottom plate; 9A3-First support column; 9A4-Side plate; 9B-First drive structure; 9C-First driving gear; 9D-First driven gear; 9E-First threaded screw; 9F-First barrel; 9G-Second driven gear; 9H-Second threaded screw; 9I-Second pressure block; 9J-Second barrel; 9K-Mixing nozzle; 9L-Needle; 9M-Second mounting plate; 9N-Second support column; 9O-First cover; 9P-Second cover; 9Q-Third cover; 10-Height probe. Detailed Implementation

[0101] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0102] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0103] Please refer to Figure 1 and Figure 2 As shown, this embodiment of the invention provides a 3D printing device for polymer smart materials, including a base 1, an X-axis motion mechanism 2, a Y-axis motion mechanism 3, a first Z-axis motion mechanism 4, a second Z-axis motion mechanism 5, a gantry 6, a first mounting plate 7, a worktable 8, and a nozzle mechanism 9.

[0104] A Y-axis motion mechanism 3 is installed on each side of the base 1. Figure 1 and Figure 2 As shown, the base 1 is a closed hexahedron shape.

[0105] The lower end of the gantry 6 is connected to a Y-axis motion mechanism 3. This Y-axis motion mechanism 3 can be a first linear module, with the lower end of the gantry 6 connected to the slide of the first linear module. Alternatively, the Y-axis motion mechanism 3 can be a first tracked structure. Figure 2 The diagram shows a partial structural schematic of the track structure. The lower end of the gantry 6 is connected to the first track of the first track structure. Furthermore, a first guide groove is provided at the lower end of the gantry 6, and a first guide rail extending along the Y-axis is provided on the side of the base 1. The first guide groove is provided on the first guide rail and can move along the first guide rail, thereby driving the gantry 6 to move along the Y-axis.

[0106] Two X-axis motion mechanisms 2 are arranged laterally (in the OX axis direction) at the upper end of the gantry frame 6. A first Z-axis motion mechanism 4 is connected to one X-axis motion mechanism 2. The X-axis motion mechanism 2 may include a U-shaped frame 21, a second guide groove 22, and a second track structure. Figure 3 (A partial structural diagram of the second track structure is shown in the image). Figure 3As shown, the second guide groove 22 includes a first horizontal plate, a first vertical plate, a second horizontal plate, a second vertical plate, a third horizontal plate, a third vertical plate, and a fourth horizontal plate arranged vertically in sequence, wherein the first horizontal plate and the fourth horizontal plate are parallel. A U-shaped frame 21 is placed horizontally, with its bottom surface fixed to the top surface of the first horizontal plate. The sides of the U-shaped frame 21, the first horizontal plate, and the fourth horizontal plate are fixed to the first Z-axis motion mechanism 4. The top plate of the U-shaped frame 21 is fixed to the second track of the second track structure. The gantry 6 also includes a U-shaped guide rail 61, with its two side plates respectively disposed within the U-shaped grooves formed by the first horizontal plate, the first vertical plate, the second horizontal plate, the third horizontal plate, the third vertical plate, and the fourth horizontal plate, thereby enabling the U-shaped guide rail 61 to slide along the second guide groove 22. The first Z-axis motion mechanism 4 is fixed to the U-shaped frame 21 and the second guide groove 22, thus allowing the first Z-axis motion mechanism 4 to move along the X-axis direction under the drive of the second track mechanism.

[0107] The X-axis motion mechanism 2 may also include a U-shaped frame 21, a second guide groove 22, and a second linear module. The structures of the U-shaped frame 21 and the second guide groove 22 are as described above and will not be repeated here. The top plate of the U-shaped frame 21 is connected to the slide of the second linear module.

[0108] Each first Z-axis motion mechanism 4 is equipped with a first mounting plate 7. For example... Figure 4 As shown, the first Z-axis motion mechanism 4 can be a third linear module. The first mounting plate 7 is fixed to the slide of the third linear module.

[0109] like Figure 1 As shown, each first mounting plate 7 is provided with at least two second Z-axis motion mechanisms 5. Each second Z-axis motion mechanism 5 is provided with one of the following: a nozzle mechanism 9, a point light source, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe 10. The second Z-axis motion mechanism 5 can be a fourth linear module. The nozzle mechanism 9, point light source, heating module, electrostatic high-voltage module, magnetic module, or height probe 10 is disposed on the slide table of the fourth linear module.

[0110] like Figure 1 The diagram illustrates a structure with three second Z-axis motion mechanisms 5 on each first mounting plate 7, nozzle mechanisms 9 on two of the second Z-axis motion mechanisms 5, and a height probe 10 on one of the second Z-axis motion mechanisms 5. This enables the device to achieve a four-nozzle replaceable technology, creating an independent, detachable, replaceable, and independently programmable four-nozzle system. It allows for customization of the printing path and printing rate, greatly expanding the controllable range during material printing. The second Z-axis motion mechanisms 5 can be configured with desired structures, providing the necessary conditions for the preparation of polymer smart materials.

[0111] The worktable 8 includes a roller brush structure 81, a heating structure 82, or a conveying structure 83. The heating structure 82 and the conveying structure 83 can be interchangeably mounted on the base 1. The roller brush structure 81, mounted on either the heating structure 82 or the conveying structure 83, can perform scraping and orientation of the mixed solution sprayed from the nozzle mechanism 9 onto the worktable 8 (achieving the crystal orientation conditions required for the preparation of polymer smart materials). Then, based on the molding characteristics of the prepared polymer smart material, a suitable module is selected for shaping (e.g., a heating module is selected if heating is required, and a light source module is selected if curing is required), resulting in the polymer smart material. Replacing the heating structure 82 with a conveying mechanism enables a "limitless" printing length function that allows for simultaneous printing and conveying.

[0112] The 3D printing device for polymer smart materials provided in this embodiment of the invention has a nozzle mechanism 9, a point light source, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe 10 mounted on a second Z-axis motion mechanism 5, which can move along the Z-axis direction. The second Z-axis motion mechanism 5 is mounted on a first mounting plate 7, which is mounted on a first Z-axis motion mechanism 4. One first Z-axis motion mechanism 4 is connected to an X-axis motion mechanism 2, which is mounted on the upper end of a gantry 6. The lower end of the gantry 6 is connected to a Y-axis motion mechanism 3 mounted on each side of the base 1. A worktable 8 is mounted on the base. Thus, the nozzle mechanism 9, point light source, heating module, electrostatic high-voltage module, magnetic module, or height probe 10 can perform three-dimensional movements relative to the base 1 in the OX, OY, and OZ directions, thereby realizing 3D printing. The device of this embodiment is equipped with one of the following on each second Z-axis motion mechanism 5: a nozzle mechanism 9, a point light source, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe 10. This allows multiple nozzles 94 to work simultaneously. Furthermore, the device can be configured with the required functions on the second Z-axis motion mechanism 5 according to the material properties, providing the necessary conditions for the preparation of polymer smart materials. The device has wider applicability, enabling multi-material composite printing or multi-functional collaborative processing, resulting in a wider variety of polymer smart materials and meeting the integrated preparation requirements of polymer smart materials. The heating structure 82 and the conveying structure 83 can be interchangeably mounted on the base 1. Replacing the heating structure 82 with a conveying mechanism enables "infinitely" long printing functionality with simultaneous printing and conveying, achieving continuous printing and conveying operations. Therefore, the material forming size is no longer constrained by the physical space of the device.

[0113] The device described in this application embodiment can be widely used in the preparation of multifunctional materials, multimaterial systems, multilayer materials, hybrid gradient materials, or refined materials. It can achieve precise quantitative feeding, regional feeding according to design requirements, and can be digitally edited and combined. It can be subjected to various excitation conditions such as ultraviolet light, temperature, ultrasound, light, electricity, and magnetism.

[0114] like Figures 1-5As shown, an embodiment of the present invention provides a nozzle mechanism 9 including a first multi-functional clamp 91, a second multi-functional clamp 92, a material cylinder 93, and a nozzle 94. The first multi-functional clamp 91 is disposed on a second Z-axis motion mechanism 5 and clamps the material cylinder 93. The second multi-functional clamp 92 is disposed at the front end of the first multi-functional clamp 91 and clamps the nozzle 94. The material cylinder 93 and the nozzle 94 are in communication.

[0115] In practice, the printing material is placed inside the barrel 93. During 3D printing, the printing material in the barrel 93 is fed into the nozzle 94, and the nozzle 94 outputs the printing material. Each nozzle 94 has the function of independent sample loading and precise quantitative output. By setting multiple nozzles 94, multiple types of printing materials can be output simultaneously.

[0116] An embodiment of the present invention provides another nozzle mechanism 9, including a first mounting bracket 9A, a first drive structure 9B, a first driving gear 9C, a first driven gear 9D, a first threaded screw 9E, a first pressure block, a first material cylinder 9F, a second drive structure, a second driving gear, a second driven gear 9G, a second threaded screw 9H, a second pressure block 9I, a second material cylinder 9J, a mixing nozzle 9K, and a needle 9L.

[0117] The first mounting frame 9A includes a top plate 9A1, a bottom plate 9A2, and first support columns 9A3. The top plate 9A1 and the bottom plate 9A2 are arranged in parallel. Four first support columns 9A3 are arranged in a parallel array between the top plate 9A1 and the bottom plate 9A2. Thus, the first mounting frame 9A has a hexahedral structure.

[0118] The first drive structure 9B is located below the base plate 9A2, with its output shaft extending out of the base plate 9A2. The first driving gear 9C is located at the extended end of the output shaft of the first drive structure 9B. The first driven gear 9D meshes with the first driving gear 9C and is sleeved on the first threaded screw 9E. The first pressure block is located at the bottom of the first threaded screw 9E and extends into the first feed cylinder 9F.

[0119] The second drive structure is located below the base plate 9A2, with its output shaft extending out of the base plate 9A2. A second driving gear is located at the extended end of the output shaft of the second drive structure. A second driven gear 9G meshes with the second driving gear and is fitted onto the second threaded screw 9H. A second pressure block 9I is located at the bottom of the second threaded screw 9H and extends into the second feed cylinder 9J.

[0120] The bottom of the first barrel 9F and the bottom of the second barrel 9J are both connected to the upper end of the mixing nozzle 9K. The lower end of the mixing nozzle 9K is connected to the upper end of the needle 9L.

[0121] During actual printing material mixing, the first mounting bracket 9A supports the first drive structure 9B and the second drive structure. The first drive structure 9B and the second drive structure can be motors. Since the first driving gear 9C is located at the extended end of the output shaft of the first drive structure 9B, the first driven gear 9D meshes with the first driving gear 9C and is sleeved on the first threaded screw 9E. The first pressure block is located at the bottom of the first threaded screw 9E and extends into the first material cylinder 9F. When the first drive structure 9B operates, it drives the output shaft to rotate, which in turn drives the first driving gear 9C to rotate. The first driving gear 9C then drives the first driven gear 9D to rotate, fixing the first mounting bracket 9A. This allows the first threaded screw 9E to move up and down relative to the first driven gear 9D. Because the first pressure block is located at the bottom of the first threaded screw and extends into the first material cylinder 9F, it can move up and down relative to the first material cylinder 9F. When the first pressure block moves downwards, it can press down the printing material in the first material cylinder 9F.

[0122] Similarly, since the second driving gear is located at the extended end of the output shaft of the second drive structure, the second driven gear 9G meshes with the second driving gear and is sleeved on the second threaded screw 9H. The second pressure block 9I is located at the bottom of the second threaded screw 9H and extends into the second material cylinder 9J. When the second drive structure works, it drives the output shaft to rotate, which in turn drives the second driving gear to rotate. The second driving gear then drives the second driven gear 9G to rotate, fixing the first mounting bracket 9A. As a result, the second threaded screw 9H moves up and down relative to the second driven gear 9G. Since the second pressure block 9I is located at the bottom of the second threaded screw and extends into the second material cylinder 9J, the second pressure block 9I can move up and down relative to the second material cylinder 9J. When the second pressure block 9I moves downward, it can press down the printing material in the second material cylinder 9J.

[0123] The bottom of the first barrel 9F and the bottom of the second barrel 9J are both connected to the upper end of the mixing nozzle 9K. The lower end of the mixing nozzle 9K is connected to the upper end of the nozzle 9L. The printing material pressed down from the first barrel 9F and the second barrel 9J enters the mixing nozzle 9K, mixes, and is then fed into the nozzle 9L, from which it is ejected. The nozzle mechanism 9 provided in this embodiment of the application precisely controls the pressing amount of the first threaded screw 9E and the second threaded screw 9H through the first drive structure 9B and the second drive structure, respectively, thereby precisely controlling the output amount of printing material and achieving a better printing effect.

[0124] Furthermore, continue to refer to Figure 6 As shown, the nozzle mechanism 9 also includes a second mounting plate 9M and a second support column 9N. Four second support columns 9N are arranged in an array on the base plate 9A2. The second mounting plate 9M is positioned above the second support columns 9N.

[0125] The first threaded screw 9E passes through the second mounting plate 9M and is rotatably connected to the second mounting plate 9M. At this time, the second mounting plate 9M can stabilize and guide the upper end of the first threaded screw 9E, making the up-and-down movement of the first threaded screw 9E more stable.

[0126] The second driven gear 9G is mounted on the second mounting plate 9M. The second threaded screw 9H passes through the top plate 9A1 and is rotatably connected to the top plate 9A1. At this time, the top plate 9A1 can stabilize and guide the upper end of the second threaded screw 9H, making the up-and-down movement of the second threaded screw 9H more stable.

[0127] The second mounting plate 9M allows the second driven gear 9G to be positioned above the first driven gear 9D, with their projections overlapping on the plane. In order for the second driven gear 9G to mesh with the first driven gear 9D, the height of the first driving gear 9C is also raised. The projections of the first driving gear 9C and the second driven gear 9G on the plane overlap, thereby saving installation space. At the same time, it ensures that the first driving gear 9C and the second driving gear, as well as the first driven gear 9D and the second driven gear 9G, do not interfere with each other when they are working.

[0128] The second mounting plate 9M has a groove on the side facing the first drive gear 9C and the second drive gear to avoid the first drive gear 9C and the second drive gear, thereby further saving installation space.

[0129] like Figure 7 As shown, a first cover 9O is provided at the upper end of the first threaded screw 9E and the second threaded screw 9H. Side plates 9A4 are provided on all four sides of the first mounting bracket 9A. A second cover 9P is provided outside the first drive structure 9B and the second drive structure. A third cover 9Q is provided between the first mounting bracket 9A and the first material cylinder 9F, and between the first mounting bracket 9A and the second material cylinder 9J. This protects the components inside the first cover 9O, the first mounting bracket 9A, the second cover 9P, and the third cover 9Q from damage. In practice, the second cover 9P can be fixed to the second Z-axis motion mechanism 5. When there is no second cover 9P, the first mounting bracket 9A can be fixed to the second Z-axis motion mechanism 5.

[0130] like Figure 8 and Figure 9 As shown, the roller brush structure 81 includes a platform pressure plate 81A, a walking component 81B, a first gantry frame 81C, a height adjustment component 81D, a first support plate 81E, a fixing plate 81F, a roller 81G, a roller 81H, and a drive component.

[0131] like Figure 8The two fixed plates 81F are arranged parallel to each other on both sides of the first support plate 81E to form an inverted U-shape. The two ends of the roller 81G are rotatably mounted on the two fixed plates 81F respectively. A roller 81H is sleeved on the roller 81G. The first drive assembly 81I is connected to one end of the roller 81G. At least one height adjustment assembly 81D is disposed on the first upper plate of the first portal frame 81C (e.g., ...). Figure 8 The diagram shows a two-part height adjustment assembly 81D. After passing through the first upper plate, its lower end connects to the first support plate 81E. The two first side plates of the first portal frame 81C are connected to the traveling assembly 81B, which is mounted on the platform pressure plate 81A. The traveling assembly 81B drives the first portal frame 81C to travel along the platform pressure plate 81A. The height adjustment assembly 81D can be a digital display micrometer head.

[0132] In actual operation, since at least one height adjustment component 81D is set on the first upper plate of the first portal frame 81C, after passing through the first upper plate, the lower end is connected to the first support plate 81E. Two fixed plates 81F are set parallel to each other on both sides of the first support plate 81E. The two ends of the roller 81G are respectively rotatably set on the two fixed plates 81F. The roller 81H is sleeved on the roller 81G. Thus, by adjusting the height adjustment component 81D, the distance between the surface of the roller 81H and the platform pressure plate 81A can be adjusted. Since the two first side plates 9A4 of the first portal frame 81C are connected to the walking component 81B, the walking component 81B drives the first portal frame 81C to move along the platform pressure plate 81A. The height adjustment component 81D is set on the first upper plate of the first portal frame 81C. After passing through the first upper plate, its lower end is connected to the first support plate 81E. Thus, while the roller 81H rotates under the drive of the first driving component 81I, it can move along the platform pressure plate 81A, thereby rolling the printing material and realizing rolling friction.

[0133] like Figure 9 As shown, the first drive assembly 81I includes a first motor 81Ia, a first driving pulley 81Ib, a first driven pulley 81Ic, and a first belt 81Id. The output shaft of the first motor 81Ia is sleeved on the first driving pulley 81Ib, the second driven pulley 81Bc is sleeved on the roller 81G, and the first belt 81Id is sleeved on the first driving pulley 81Ib and the second driving pulley 81Bb. When the first motor 81Ia operates, it drives the first driving pulley 81Ib to rotate, thereby driving the first belt 81Id and the second driven pulley 81Bc to rotate. The second driven pulley 81Bc drives the roller 81G to rotate, which in turn drives the roller 81H to rotate.

[0134] Reference Figure 8 and Figure 9As shown, the walking assembly 81B includes a second motor 81Ba, a second driving pulley 81Bb, a second driven pulley 81Bc, a second belt 81Bd, a first main shaft 81Be, a second main shaft 81Bf, a third driven pulley 81Bg, a fourth driven pulley 81Bh, a third belt 81Bi, an inverted T-shaped guide groove 81Bj, and a guide block 81Bk. The output shaft of the second motor 81Ba is fitted with a second driving pulley 81Bb, and a second driven pulley 81Bc is fitted on the first main shaft 81Be. A second belt 81Bd is fitted on the second driving pulley 81Bb and the second driven pulley 81Bc. The first main shaft 81Be and the second main shaft 81Bf are arranged parallel to each other on both sides of the platform pressure plate 81A. A third driven pulley 81Bg is fitted on each end of the first main shaft 81Be, and the ends of the second main shaft 81Bf are fitted on the ends of the fourth driven pulley 81Bh. A third belt 81Bi is fitted on the third driven pulley 81Bg and the fourth driven pulley 81Bh at each corresponding position.

[0135] The inverted T-shaped guide groove 81Bj is provided with an inverted T-shaped through groove along its length. An inverted T-shaped guide groove 81Bj is provided on each side of the platform pressure plate 81A, and the length direction of the inverted T-shaped guide groove 81Bj is perpendicular to the first main shaft 81Be. The guide block 81Bk includes a U-shaped sub-block and an inverted T-shaped sub-block. The U-shaped sub-block is laterally disposed on the first side plate of the first portal frame 81C, with its opening facing outwards. The top surface of the inverted T-shaped sub-block is integrally formed with the bottom surface of the U-shaped sub-block. The third belt 81Bi passes through the opening of the U-shaped sub-block and is fixed to the U-shaped sub-block. The inverted T-shaped sub-block is disposed within the inverted T-shaped through groove of the inverted T-shaped guide groove 81Bj and can slide along the inverted T-shaped through groove.

[0136] In actual operation, the output shaft of the second motor 81Ba drives the second driving pulley 81Bb to rotate, the second driven pulley 81Bc and the second belt 81Bd to rotate, the second driven pulley 81Bc drives the first main shaft 81Be, the third driven pulley 81Bg, the second main shaft 81Bf, the fourth driven pulley 81Bh and the third belt 81Bi to rotate, and thus the third belt 81Bi drives the first portal frame 81C and the roller 81H to move along the platform pressure plate 81A.

[0137] Furthermore, the roller brush structure 81 also includes a scraper (not shown in the figure). The roller 81G, roller 81H, and first drive assembly 81I can be removed, and the two ends of the scraper can be installed at the position where the first roller 81G is installed. Alternatively, two hinge ears can be arranged parallel to each other on the front end face of the first support plate 81E, and the two ends of the scraper can be interference-fitted with the hinge holes of the hinge ears respectively. When scraping is needed, the scraper is rotated towards the platform pressure plate 81A; when scraping is not needed, the scraper is rotated away from the platform pressure plate 81A. The scraper can achieve planar friction.

[0138] Furthermore, continue to refer to Figure 8and Figure 9 As shown, the roller brush structure 81 also includes a second portal frame 81J and fixing bolts 81K. The second portal frame 81J is disposed between the first portal frame 81C and the first support plate 81E. The upper portions of the two first side plates of the first portal frame 81C each have a vertical strip-shaped first through groove. The upper portions of the two second side plates of the second portal frame 81J each have multiple fixing holes arranged in a vertical linear array, and the lower portions each have a vertical strip-shaped second through groove. The two ends of the roller 81G are rotatably disposed in one of the second through grooves. The two fixing bolts 81K pass through one of the first through grooves and are fixed to the fixing holes at corresponding positions.

[0139] In practice, after the height adjustment component 81D is adjusted to the correct height, the two fixing bolts 81K are passed through a first through slot and fixed to the corresponding fixing holes, thereby further securing the roller 81G. The first through slot allows for longitudinal movement of the bolt 83G during height adjustment. The second through slot allows for longitudinal movement of both ends of the roller 81G during height adjustment.

[0140] Optionally, the roller brush structure 81 further includes fixed posts 81L and first elastic elements 81M. At least one first through hole is provided on the first support plate 81E. The second top plate of the second portal frame 81J has second through holes in number and position corresponding to the first through holes. A fixed post 81L is provided in each of the first and second through holes. A first elastic element 81M is provided at each first through hole, with both ends of the first elastic element 81M fixed to a fixed post 81L.

[0141] The first elastic element 81M can be a spring. In practice, during the rolling process of the roller 81H, due to the height difference after the printing material is placed on the pressure plate, the roller 81H will be subjected to an upward force due to the uneven height. The setting of the first elastic element 81M can play a buffering role, so that the rolling effect of the roller 81H is better.

[0142] like Figure 10 As shown, the conveying structure 83 includes a second mounting bracket 83A, a second drive assembly, a drive roller 83B, a driven roller 83C, a conveyor belt 83D, a support rod 83E, a second support plate 83F, bolts 83G, and a first heating plate 83H. The second mounting bracket 83A can be a rectangular frame surrounded by profiles.

[0143] A drive roller 83B and a driven roller 83C are arranged parallel to each other on a second mounting bracket 83A. A second drive assembly is connected to the drive roller 83B. A conveyor belt 83D is fitted onto the drive roller 83B and the driven roller 83C. At least one support rod 83E is provided on the second mounting bracket 83A and located within the internal space of the conveyor belt 83D. Figure 10A schematic diagram of the structure showing two support rods 83E mounted on the second mounting bracket 83A is shown.

[0144] The second support plate 83F is placed on the support rod 83E. A bolt 83G is installed at each of the four corners of the second support plate 83F, passing through from bottom to top. The first heating plate 83H is installed on the top surface of the bolts 83G.

[0145] The conveying structure 83 provided in this embodiment has a support rod 83E mounted on a second mounting bracket 83A and located within the internal space of the conveyor belt. A second support plate 83F is placed on the support rod 83E, thus the support rod 83E supports the second support plate 83F. A bolt 83G extending upwards is installed at each of the four corners of the second support plate 83F. A first heating plate 83H is positioned on the top surface of the bolts 83G, so the second support plate 83F and the bolts 83G work together to support the heating plate. Furthermore, the four bolts 83G allow for leveling of the first heating plate 83H by adjusting their positions, ensuring a better fit between the first heating plate 83H and the conveyor belt 83D. Material printing is performed on the conveyor belt 83D at the location of the first heating plate 83H. As the conveyor belt 83D rotates, it carries the printed polymer smart material while printing, enabling a "limitless" printing length function that allows for simultaneous printing and conveying.

[0146] Furthermore, such as Figure 10 As shown, the conveying structure 83 also includes a second elastic element 83I. A second elastic element 83I is fitted onto each bolt 83G, and the second elastic element 83I is located between the second support plate 83F and the heating plate. During actual printing, when the printhead mechanism 9 prints the printing material onto the conveyor belt 83D, there will be a certain pressure and gravity, causing the first heating plate 83H to shake under the force. At this time, the second elastic element 83I will exert a reaction force on the first heating plate 83H, thereby maintaining the stability of the position of the first heating plate 83H.

[0147] like Figure 11 and Figure 12 As shown, the heating structure 82 includes a placement plate 821, heat insulation cotton 822, a second heating plate 823, and a cover 824. The placement plate 821 is disposed on the base 1. The heat insulation cotton 822 is disposed on the placement plate 821. The second heating plate 823 is placed on the heat insulation cotton 822. The cover 824 is fastened above the second heating plate 823, and the lead wire of the second heating plate 823 passes through the cover 824.

[0148] The heating structure 82 provided in this embodiment of the invention is simple in structure and easy to manufacture. The placement plate 821 facilitates the movement of the heating structure 82 and makes it easy to replace with the conveying structure 83. The heat insulation cotton 822 is disposed at the bottom of the second heating plate 823, preventing heat loss and reducing energy consumption. The cover 824 is fastened to the top of the second heating plate 823, protecting both the second heating plate 823 and the heat insulation cotton 822, and also forming a platform surface for easy material printing. The heating structure 82 also includes a wire clamping box 825, which is disposed on the placement plate 821. The leads of the second heating plate 823 pass through the wire clamping box 825, which can hold and position the leads.

[0149] On the other hand, another embodiment of the present invention provides a 3D printing method for polymer smart materials, implemented using the above-mentioned 3D printing apparatus for polymer smart materials, comprising:

[0150] According to actual needs, one of the following can be set on the second Z-axis motion mechanism 5: nozzle mechanism 9, light source module, heating module, electrostatic high voltage module, magnetic module or height probe 10, and ensure that there are at least two nozzle mechanisms 9.

[0151] A mixed solution required for preparing polymer smart materials is placed in each nozzle mechanism 9;

[0152] The X-axis motion mechanism 2, Y-axis motion mechanism 3, first Z-axis motion mechanism 4, and second Z-axis motion mechanism 5 move to spray multiple mixed solutions onto the worktable 8 through the nozzle mechanism 9 according to the pre-designed printing path. The sprayed mixed solutions are oriented by the roller brush structure 81. The appropriate module is selected to work according to the molding characteristics of the prepared polymer smart material to perform shaping (e.g., heating module is selected if heating is required, and light source module is selected if curing is required), and the polymer smart material is obtained.

[0153] The 3D printing method for polymer smart materials in this application provides more advanced preparation conditions, broadens applicability, and enables multi-material composite printing or multi-functional synergistic processing. It produces a wider variety of polymer smart materials and meets the integrated preparation requirements. It can be widely applied to the preparation of multi-functional materials, multi-material systems, multi-layer materials, mixed gradient materials, or refined materials.

[0154] To better demonstrate the application of the 3D printing apparatus and method for polymer smart materials provided in the embodiments of this application, specific embodiments are provided below to illustrate the preparation of polymer smart materials (liquid crystal elastomer is one type of polymer smart material) using this apparatus.

[0155] Example 1

[0156] This embodiment provides a method for preparing liquid crystal elastomer fibers using a 3D printing device for polymer smart materials:

[0157] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0158] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0159] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto the worktable 8 along a pre-designed linear printing path. After being left to stand, thermal polymerization occurs to obtain the prepolymer.

[0160] The third nozzle mechanism 9 was replaced with an ultraviolet lamp head, and the prepolymer was photopolymerized to obtain liquid crystal elastomer fibers.

[0161] It should be noted that the ratio between the first and second nozzle mechanisms 9 can be adjusted arbitrarily within a certain range. The more acrylate monomers there are, the higher the modulus of the final liquid crystal elastomer fiber, and vice versa. The temperature of the worktable 8 is related to the ratio between the two, and the light intensity of the ultraviolet lamp can also be adjusted arbitrarily.

[0162] It should be noted that the orientation of the liquid crystal elastomer is affected by the diameter of the nozzle 94 of the nozzle mechanism 9, so the orientation of the liquid crystal elastomer can be adjusted by adjusting its diameter.

[0163] Example 2

[0164] This embodiment provides a method for preparing liquid crystal elastomer films using a 3D printing device for polymer smart materials:

[0165] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0166] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0167] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto one side of the worktable 8 along a pre-designed linear printing path. The precursor liquid is then immediately rolled and rubbed by rollers 81H.

[0168] The precursor liquid is evenly distributed on the platform plate 81A under the action of roller 81H, and after static thermal polymerization, a prepolymer is obtained.

[0169] The third nozzle mechanism 9 was replaced with an ultraviolet lamp head, and the prepolymer was photopolymerized to obtain a liquid crystal elastomer film.

[0170] It should be noted that the ratio between the first and second nozzle mechanisms 9 can be adjusted arbitrarily within a certain range. The more acrylate monomers there are, the higher the modulus of the final liquid crystal elastomer fiber, and vice versa. The temperature of the worktable 8 is related to the ratio between the two, and the light intensity of the ultraviolet lamp can also be adjusted arbitrarily.

[0171] It should be noted that the distance between the roller 81H and the platform plate 81A is adjustable, meaning the thickness of the liquid crystal elastomer film can be adjusted.

[0172] It should be noted that the orientation of the liquid crystal elastomer film is affected by the friction of the roller 81H. Therefore, the degree of orientation of the liquid crystal elastomer film can be adjusted by adjusting the friction rate.

[0173] Example 3

[0174] This embodiment provides a method for the continuous fabrication of liquid crystal elastomer films using a 3D printing device for polymer smart materials:

[0175] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0176] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0177] Switch the heating structure 82 to the conveying structure 83.

[0178] Replace the third nozzle mechanism 9 with an ultraviolet lamp head.

[0179] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto one side of the conveyor along a pre-designed linear printing path. Then, the precursor liquid is immediately rolled and rubbed by rollers 81H. Under the action of rollers 81H, the precursor liquid is evenly distributed on the platform plate 81A and photopolymerized on the thermally polymerized prepolymer to obtain a liquid crystal elastomer film.

[0180] Under the action of conveyor belt 83D, the prepared liquid crystal elastomer film is conveyed out of the printing area and collected, and the printing area continues to prepare materials for the next area.

[0181] It should be noted that the ratio between the first and second nozzle mechanisms 9 can be adjusted arbitrarily within a certain range. The more acrylate monomers there are, the higher the modulus of the final liquid crystal elastomer fiber, and vice versa. The temperature of the worktable 8 is related to the ratio between the two, and the light intensity of the ultraviolet lamp can also be adjusted arbitrarily.

[0182] It should be noted that the distance between the roller 81H and the platform plate 81A is adjustable, meaning the thickness of the liquid crystal elastomer film can be adjusted.

[0183] It should be noted that the orientation of the liquid crystal elastomer film is affected by the friction of the roller 81H. Therefore, the degree of orientation of the liquid crystal elastomer film can be adjusted by adjusting the friction rate.

[0184] Example 4

[0185] This embodiment provides the fabrication of a 4D deformable gradient liquid crystal elastomer film using a 3D printing device for polymer smart materials:

[0186] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)diethylthiol, the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran and placed in the first nozzle mechanism 9. The ratio of RM82 to 2,2-(1,2-ethylenedioxy)diethylthiol is 2:1, which is denoted as the high modulus region.

[0187] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)diethylthiol, the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran and placed in the second nozzle mechanism 9. The ratio of RM82 to 2,2-(1,2-ethylenedioxy)diethylthiol is 1.5:1, which is denoted as the medium modulus region.

[0188] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)diethylthiol, the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran and placed in the third nozzle mechanism 9. The ratio of RM82 to 2,2-(1,2-ethylenedioxy)diethylthiol is 1:1, which is denoted as the low modulus region.

[0189] The three types of printhead mechanisms 9 are printed on the pre-defined paths, forming a structure similar to... Figure 13 The circles (black: high modulus, gray: medium modulus, white: low modulus) are subjected to thermal polymerization and photopolymerization on a hot plate.

[0190] Among them, liquid crystal elastomers with different moduli exhibit different thermally induced shrinkage behaviors, and will show different degrees of deformation when heated, thus exhibiting Figure 14 The out-of-plane deformation is shown.

[0191] The temperature and effect of deformation are controlled by the modulus and can be adjusted by the formula of the three nozzle mechanisms 9.

[0192] Example 5

[0193] This embodiment provides the preparation of cholesteric phase liquid crystal elastomer fibers using a 3D printing device for polymer smart materials:

[0194] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0195] Chiral agent DK756 is dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0196] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the third nozzle mechanism 9.

[0197] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0198] The solutions in the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 are mixed evenly.

[0199] The precursor liquid is extruded according to the preset printing path. The extruded precursor is thermally polymerized on a hot stage. After standing for a period of time, it is subjected to ultraviolet light polymerization to obtain cholesteric phase liquid crystal elastomer fibers.

[0200] It should be noted that the feeding ratio of the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 can be adjusted at any time.

[0201] In particular, the chiral agent in the second nozzle mechanism 9 determines the final color of the cholesteric liquid crystal elastomer fiber. Adjusting the ratio of the chiral agent to the liquid crystal monomer RM82 can adjust the color of the fiber across the entire visible light range.

[0202] The ratio between the first nozzle mechanism 9 and the third nozzle mechanism 9 determines the modulus of the cholesteric liquid crystal elastomer fiber, and the modulus can be adjusted by regulating the ratio between the two.

[0203] The temperature of workbench 8 is affected by the formula.

[0204] The intensity of ultraviolet light and the height of the ultraviolet lamp are adjustable.

[0205] Example 6

[0206] This embodiment provides a method for preparing cholesteric phase liquid crystal elastomer films using a 3D printing device for polymer smart materials:

[0207] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0208] Chiral agent DK756 is dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0209] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the third nozzle mechanism 9.

[0210] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0211] Switch roller 81H to scraper.

[0212] The solutions in the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 are mixed evenly.

[0213] The precursor liquid is evenly coated onto the front end of the worktable 8, and then the precursor liquid is immediately rubbed with a scraper to obtain a well-oriented precursor. After standing for a period of time, it is thermally polymerized.

[0214] After thermal polymerization, the precursor is subjected to ultraviolet light polymerization to obtain a cholesteric phase liquid crystal elastomer film.

[0215] It should be noted that the feeding ratio of the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 can be adjusted at any time.

[0216] In particular, the chiral agent in the second nozzle mechanism 9 determines the final color of the cholesteric liquid crystal elastomer fiber. Adjusting the ratio of the chiral agent to the liquid crystal monomer RM82 can adjust the color of the fiber across the entire visible light range.

[0217] The ratio between the first nozzle mechanism 9 and the third nozzle mechanism 9 determines the modulus of the cholesteric liquid crystal elastomer film, and the modulus can be adjusted by regulating the ratio between the two.

[0218] The temperature of workbench 8 is affected by the formula.

[0219] The intensity of ultraviolet light and the height of the ultraviolet lamp are adjustable.

[0220] The distance between the scraper and the hot stage can be adjusted, and the orientation of the cholesteric liquid crystal elastomer film can be adjusted by adjusting this distance and the scraper running speed.

[0221] Example 7

[0222] This embodiment provides a method for the continuous fabrication of cholesteric phase liquid crystal elastomer films using a 3D printing device for polymer smart materials:

[0223] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0224] Chiral agent DK756 is dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0225] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the third nozzle mechanism 9.

[0226] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0227] Switch roller 81H to scraper.

[0228] Switch the heating structure 82 to the conveying structure 83.

[0229] The solutions in the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 are mixed evenly.

[0230] The precursor liquid is uniformly coated onto the front end of the worktable 8, and then the precursor liquid is immediately rubbed with a scraper to obtain a well-oriented precursor. The precursor is then subjected to ultraviolet light polymerization to obtain a cholesteric phase liquid crystal elastomer film.

[0231] Under the action of conveyor belt 83D, the prepared cholesteric phase liquid crystal elastomer film is conveyed out of the printing area and collected, and the printing area continues to prepare materials for the next area.

[0232] It should be noted that the feeding ratio of the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 can be adjusted at any time.

[0233] In particular, the chiral agent in the second nozzle mechanism 9 determines the final color of the cholesteric liquid crystal elastomer fiber. Adjusting the ratio of the chiral agent to the liquid crystal monomer RM82 can adjust the color of the fiber across the entire visible light range.

[0234] The ratio between the first nozzle mechanism 9 and the third nozzle mechanism 9 determines the modulus of the cholesteric liquid crystal elastomer film, and the modulus can be adjusted by regulating the ratio between the two.

[0235] The temperature of workbench 8 is affected by the formula.

[0236] The intensity of ultraviolet light and the height of the ultraviolet lamp are adjustable.

[0237] The distance between the scraper and the hot stage can be adjusted, and the orientation of the cholesteric liquid crystal elastomer film can be adjusted by adjusting this distance and the scraper running speed.

[0238] Example 8

[0239] This embodiment provides the preparation of a gradient-distributed cholesteric phase liquid crystal elastomer film using a 3D printing device with polymer smart materials:

[0240] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0241] Chiral agent DK756 is dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0242] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the third nozzle mechanism 9.

[0243] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0244] The solutions in the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 are mixed evenly.

[0245] By adjusting the ratio of chiral agent DK756 to RM82, a red cholesteric phase liquid crystal elastomer fiber was obtained and extruded and printed according to a preset path.

[0246] By adjusting the ratio of chiral agent DK756 to RM82, cholesteric phase liquid crystal elastomer fibers with a green color were obtained and extruded and printed according to a preset path.

[0247] By adjusting the ratio of chiral agent DK756 to RM82, a blue cholesteric phase liquid crystal elastomer fiber was obtained and extruded and printed according to a preset path.

[0248] The extruded precursor is thermally polymerized on a hot stage, and after standing for a period of time, it is subjected to ultraviolet light polymerization to obtain cholesteric phase liquid crystal elastomer fibers.

[0249] That is, get Figure 15 The three-color cholesteric phase liquid crystal elastomer fiber shown.

[0250] It should be noted that the feeding ratio of the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 can be adjusted at any time.

[0251] In particular, the chiral agent in the second nozzle mechanism 9 determines the final color of the cholesteric liquid crystal elastomer fiber. Adjusting the ratio of the chiral agent to the liquid crystal monomer RM82 can adjust the color of the fiber across the entire visible light range.

[0252] The ratio between the first nozzle mechanism 9 and the third nozzle mechanism 9 determines the modulus of the cholesteric liquid crystal elastomer fiber, and the modulus can be adjusted by regulating the ratio between the two.

[0253] The temperature of workbench 8 is affected by the formula.

[0254] The intensity of ultraviolet light and the height of the ultraviolet lamp are adjustable.

[0255] Example 9

[0256] This embodiment provides the preparation of patterned cholesteric liquid crystal elastomer films using a 3D printing device with polymer smart materials:

[0257] The acrylate liquid crystal monomer RM82 and the photoinitiator benzoin dimethyl ether are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0258] Chiral agent DK756 is dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0259] The dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethanethiol) and the thermal initiator dipropylamine were dissolved in a certain amount of tetrahydrofuran solution and placed in the third nozzle mechanism 9.

[0260] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0261] Switch roller 81H to scraper.

[0262] The solutions in the first nozzle mechanism 9, the second nozzle mechanism 9, and the third nozzle mechanism 9 are mixed evenly.

[0263] By adjusting the ratio of chiral agent DK756 to RM82, a green precursor was obtained, which served as the background color. The precursor liquid was then evenly coated onto the front end of the hot plate, and immediately rubbed with a scraper to obtain a well-oriented precursor. After standing for a period of time, thermal polymerization was carried out.

[0264] After thermal polymerization, under the action of a mask, a portion of the precursor is preferentially subjected to ultraviolet light polymerization, followed by ultraviolet light polymerization of the background area, to obtain a patterned cholesteric liquid crystal elastomer film.

[0265] It should be noted that the pattern area and the background area are affected by different degrees of light concentration, thus exhibiting different color characteristics, such as... Figure 16 As shown.

[0266] When the material is stretched, the patterned area and the background area exhibit different color changes, such as... Figure 17 As shown.

[0267] Example 10

[0268] This embodiment provides the preparation of pigmented cholesteric phase liquid crystal elastomer films using a 3D printing device with polymer smart materials:

[0269] Acrylic liquid crystal monomer RM82, dithiol chain extender 2,2-(1,2-ethylenedioxy)diethylthiol, chiral agent DK756, photoinitiator benzoin dimethyl ether, and thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran solution. By adjusting the ratio of chiral agent DK756 to RM82, three colors are adjusted respectively, and placed in three nozzle mechanisms 9.

[0270] The first nozzle mechanism 9 is red, the second nozzle mechanism 9 is green, and the third nozzle mechanism 9 is blue.

[0271] Switch the fourth nozzle mechanism 9 to an ultraviolet light source system.

[0272] Switch roller 81H to scraper.

[0273] The solutions from the first, second, and third nozzle mechanisms 9 are printed onto different areas of the operating table, such as... Figure 18 As shown.

[0274] The precursor solution was uniformly coated onto a hot plate, and then immediately rubbed with a spatula to obtain a well-oriented precursor. The precursor was then subjected to ultraviolet light polymerization to obtain a pigmented cholesteric phase liquid crystal elastomer film. Figure 19 As shown.

[0275] Example 11

[0276] This embodiment provides a method for preparing conductive liquid crystal elastomer fibers using a 3D printing device for polymer smart materials:

[0277] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethyl mercaptan), the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0278] The conductive filler carbon nanotubes are dissolved in a certain amount of tetrahydrofuran and placed in the second nozzle mechanism 9.

[0279] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto the hot plate according to the pre-designed linear printing path, and then allowed to stand to undergo thermal polymerization.

[0280] The third nozzle mechanism 9 was replaced with an ultraviolet lamp head, and the thermally polymerized prepolymer was photopolymerized to obtain liquid crystal elastomer fibers.

[0281] It should be noted that the ratio between the first nozzle mechanism 9 and the second nozzle mechanism 9 can be adjusted arbitrarily within a certain range. The higher the content of carbon nanotubes, the better the conductivity of the liquid crystal elastomer, and the higher the modulus.

[0282] Example 12

[0283] This embodiment provides a method for preparing a conductive liquid crystal elastomer bilayer film using a 3D printing device for polymer smart materials:

[0284] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethyl mercaptan), the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0285] The conductive filler carbon nanotubes and the physical adhesive PVDF are dissolved in a certain amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0286] The first nozzle mechanism 9 is printed on one side of the operating table according to the pre-designed path, and rolled and rubbed by the roller 81H to obtain a liquid crystal elastomer film.

[0287] The second printhead mechanism 9 is also printed on one side of the operating table, and rolled and rubbed by the roller 81H to evenly spread it on the upper layer of the liquid crystal elastomer film.

[0288] The two layers of material are allowed to stand for a while, and thermal polymerization occurs.

[0289] The third nozzle mechanism 9 is replaced with an ultraviolet light source system to perform photopolymerization on the material on the operating table, resulting in a conductive liquid crystal elastomer film with a conductive layer on top and a substrate layer on the bottom.

[0290] It should be noted that the first layer should be allowed to stand for a sufficient amount of time before the second conductive layer is applied, so that the substrate layer has self-support.

[0291] It should be noted that, theoretically, the thickness of the conductive layer has no effect on conductivity, but in practice, to ensure circuit continuity, the conductive layer should be thicker.

[0292] Example 13

[0293] This embodiment provides a method for preparing liquid crystal elastomer fibers with photothermal properties using a 3D printing device for polymer smart materials:

[0294] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethyl mercaptan), the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0295] The photothermal filler carbon nanotubes are dissolved in a certain amount of tetrahydrofuran and placed in the second nozzle mechanism 9.

[0296] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto the hot plate according to the pre-designed linear printing path, and then allowed to stand to undergo thermal polymerization.

[0297] The third nozzle mechanism 9 was replaced with an ultraviolet lamp head, and the thermally polymerized prepolymer was photopolymerized to obtain a liquid crystal elastomer fiber with photothermal properties. This fiber undergoes changes under photothermal action, such as... Figure 20 The light-driven strain is shown.

[0298] Example 14

[0299] This embodiment provides a method for preparing a liquid crystal polyurethane composite material with photothermal properties using a 3D printing device for polymer smart materials (liquid crystal polyurethane composite material belongs to liquid crystal elastomer composite material, which is also a type of polymer smart material):

[0300] The acrylate liquid crystal monomer RM82, the dithiol chain extender 2,2-(1,2-ethylenedioxy)bis(ethyl mercaptan), the photoinitiator benzoin dimethyl ether, and the thermal initiator dipropylamine are dissolved in a certain amount of tetrahydrofuran solution and placed in the first nozzle mechanism 9.

[0301] The isocyanate monomer 4,4'-diphenylmethane diisocyanate, polyol PTMG1000, and thermal initiator DBTL are dissolved in a trace amount of tetrahydrofuran solution and placed in the second nozzle mechanism 9.

[0302] The solutions in the first and second nozzle mechanisms 9 are uniformly mixed and sprayed onto the worktable 8 along a pre-designed linear printing path, and then allowed to stand to undergo thermal polymerization.

[0303] The third nozzle mechanism 9 was replaced with an ultraviolet lamp head, and the thermally polymerized prepolymer was photopolymerized to obtain a liquid crystal polyurethane composite material with a dual-network structure.

[0304] This embodiment 14 illustrates that the 3D printing device for polymer smart materials provided in this embodiment of the invention has the ability to prepare hybrid systems (interpenetrating polymer networks).

[0305] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0306] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A 3D printing device for high-molecular intelligent materials, comprising a base, an X-axis movement mechanism, a Y-axis movement mechanism, a first Z-axis movement mechanism, a second Z-axis movement mechanism, a gantry, a first mounting plate, a workbench, and a nozzle mechanism; One Y-axis movement mechanism is arranged on each side of the base; The lower end of the gantry is connected to one Y-axis movement mechanism; Two X-axis movement mechanisms are arranged on the upper end of the gantry in the transverse direction; One first Z-axis movement mechanism is connected to one X-axis movement mechanism; One first mounting plate is arranged on each first Z-axis movement mechanism; At least two second Z-axis movement mechanisms are arranged on each first mounting plate; One of a nozzle mechanism, a light source module, a heating module, an electrostatic high-voltage module, a magnetic module, or a height probe is arranged on each second Z-axis movement mechanism; The workbench comprises a rolling brush structure, a heating structure, or a conveying structure; The heating structure and the conveying structure are alternatively arranged on the base; The rolling brush structure is arranged on the heating structure or the conveying structure, and can scrape and orient the mixed solution sprayed by the nozzle mechanism to the workbench, and then select the appropriate module work according to the forming characteristics of the prepared high-molecular intelligent material to shape the high-molecular intelligent material.

2. The 3D printing device for a high polymer smart material according to claim 1, wherein The nozzle mechanism comprises a first multifunctional clamp, a second multifunctional clamp, a cartridge, and a nozzle; The first multifunctional clamp is arranged on the second Z-axis movement mechanism and clamps the cartridge; The second multifunctional clamp is arranged at the front end of the first multifunctional clamp and clamps the nozzle; The cartridge is in communication with the nozzle.

3. The 3D printing device for a polymer smart material according to claim 1, wherein The nozzle mechanism comprises a first mounting bracket, a first driving structure, a first driving gear, a first driven gear, a first threaded lead screw, a first pressing block, a first cartridge, a second driving structure, a second driving gear, a second driven gear, a second threaded lead screw, a second pressing block, a second cartridge, a mixing nozzle, and a needle head; The first mounting bracket comprises a top plate, a bottom plate, and four first support columns; The top plate and the bottom plate are arranged in parallel; The four first support columns are arranged in parallel between the top plate and the bottom plate; The first driving structure is arranged below the bottom plate, and the output shaft of the first driving structure extends out of the bottom plate; The first driving gear is arranged at the extending end of the output shaft of the first driving structure; The first driven gear is engaged with the first driving gear and is sleeved on the first threaded lead screw; The first pressing block is arranged at the bottom of the first threaded lead screw and extends into the first cartridge; The second driving structure is arranged below the bottom plate, and the output shaft of the second driving structure extends out of the bottom plate; The second driving gear is arranged at the extending end of the output shaft of the second driving structure; The second driven gear is engaged with the second driving gear and is sleeved on the second threaded lead screw; The second pressing block is arranged at the bottom of the second threaded lead screw and extends into the second cartridge; The bottom of the first cartridge and the bottom of the second cartridge are in communication with the upper end of the mixing nozzle; The lower end of the mixing nozzle is in communication with the upper end of the needle head.

4. The 3D printing device for a polymer smart material according to claim 3, wherein The nozzle mechanism further comprises a second mounting plate and a second support column. Four second pillar arrays are arranged on the bottom plate; The second mounting plate is arranged above the second pillar; The first threaded lead screw is rotatably connected to the second mounting plate; The second driven gear is arranged on the second mounting plate; The second threaded lead screw is rotatably connected to the top plate; The second mounting plate is provided with a groove for avoiding the first driving gear and the second driving gear. 5.The 3D printing device for high polymer smart materials according to claim 1, wherein The rolling brush structure comprises a platform pressing plate, a walking assembly, a first door-shaped frame, a height adjusting assembly, a first support plate, a fixed plate, a roller shaft, a roller, and a first driving assembly; Two fixed plates are arranged on the two sides of the first support plate in parallel; The two ends of the roller shaft are rotatably arranged on the two fixed plates respectively; The roller is sleeved on the roller shaft; The first driving assembly is connected to one end of the roller shaft; At least one height adjusting assembly is arranged on the first upper plate of the first door-shaped frame, and the lower end is connected to the first support plate after passing through the first upper plate; The two first side plates of the first door-shaped frame are connected to the walking assembly, the walking assembly is arranged on the platform pressing plate, and the walking assembly drives the first door-shaped frame to walk along the platform pressing plate.

6. The 3D printing device for a high polymer smart material according to claim 5, wherein The rolling brush structure further comprises a second door-shaped frame and a fixed bolt; The second door-shaped frame is arranged between the first door-shaped frame and the support plate; The upper parts of the two side plates of the first door-shaped frame are respectively provided with a vertical strip-shaped first through slot; The upper parts of the two second side plates of the second door-shaped frame are respectively provided with a plurality of fixed holes arranged in a vertical straight line array, and the lower parts are respectively provided with a vertical strip-shaped second through slot; The two ends of the roller shaft are rotatably arranged in the second through slot respectively; Two fixed bolts are respectively fixed in the fixed holes at the corresponding positions after passing through the first through slot.

7. The 3D printing device for a high polymer smart material according to claim 6, wherein The rolling brush structure further comprises a fixed column and a first elastic member; At least one first through hole is arranged on the support plate; A second through hole corresponding to the first through hole in number and position is arranged on the first top plate of the second door-shaped frame; A fixed column is respectively arranged in the first through hole and the second through hole; A first elastic member is arranged at each first through hole, and the two ends of the first elastic member are respectively fixed to a fixed column. 8.The 3D printing device for high polymer smart materials according to claim 1, wherein, The conveying structure comprises a second mounting frame, a second driving assembly, a driving roller, a driven roller, a conveying belt, a support rod, a second support plate, a bolt, and a first heating plate; The driving roller and the driven roller are arranged in parallel on the second mounting frame; The second driving assembly is connected to the driving roller; The conveying belt is sleeved on the driving roller and the driven roller; At least one support rod is arranged in the inner space of the conveying belt on the second mounting frame; The second support plate is placed on the support rod; A bolt is arranged at each corner of the second support plate from bottom to top; The first heating plate is arranged on the top surface of the bolt. 9.The 3D printing device for high polymer smart materials according to claim 1, wherein The heating structure comprises a placing plate, heat insulation cotton, a second heating plate, and a cover; The placing plate is arranged on the base; The heat insulation cotton is arranged on the placing plate; The second heating plate is arranged on the heat insulation cotton; The cover is arranged on the second heating plate, and the lead wire of the second heating plate is arranged to pass through the cover.

10. A 3D printing method for a high molecular smart material, characterized by, The high polymer intelligent material is prepared by using the 3D printing device of any one of claims 1-9, comprising: According to the actual demand, one of the nozzle mechanism, light source module, heating module, electrostatic high voltage module, magnetic module or height probe is arranged on the second Z-axis movement mechanism, and at least two nozzle mechanisms are ensured; A mixed solution required for preparing the high polymer intelligent material is arranged in each nozzle mechanism; The X-axis movement mechanism, Y-axis movement mechanism, first Z-axis movement mechanism and second Z-axis movement mechanism move to spray the mixed solution on the workbench through the nozzle mechanism according to the pre-designed printing path, the sprayed mixed solution is scraped and oriented through the rolling brush structure, the prepared high polymer intelligent material is shaped through the selected module work according to the shaping characteristics, and the high polymer intelligent material is obtained.

Images