A wire transfer multi-material additive manufacturing apparatus and method

Abstract

The application relates to a wire transfer multi-material additive manufacturing device and method, which device comprises a rack, a station switching module, a lifting module, a forming module and a printing platform; the station switching module is fixedly installed on the rack, the printing platform is connected with the station switching module, and the printing platform is arranged above the station switching module; at least one aluminum profile rack is arranged on the rack, and the lifting module is installed on each aluminum profile rack; the forming module is arranged on the lifting module, the forming module is used for coating a film transfer material and selectively transferring the material to the printing platform; the station switching module moves the printing platform in the horizontal direction, the forming module completes line-by-line coating, forming and demolding of the material on the printing platform, and realizes coverage from a line to a plane. The application not only optimizes the structure of the multi-material additive manufacturing device, improves the stability and operation convenience of the device, but also overcomes the precision and material compatibility problems of existing high-viscosity photocurable materials in the multi-material additive manufacturing technology.

Description

Technical Field

[0001] This invention relates to the field of additive manufacturing technology, specifically to a line transfer multi-material additive manufacturing equipment and method. Background Technology

[0002] Additive manufacturing technology has experienced rapid development in the manufacturing industry in recent years and has been widely applied in fields such as aerospace, automotive, medical devices, and jewelry manufacturing. Compared with traditional manufacturing methods, additive manufacturing technology offers greater design freedom and lower production costs, enabling the rapid production of complex structures and small-batch customized parts. However, existing additive manufacturing equipment typically only allows printing with a single material, which limits its application in the production of parts requiring multiple functions and material properties.

[0003] Therefore, multi-material additive manufacturing technology, which enables the use of different materials in the same printing process to meet the design requirements of multifunctional parts, has become a research hotspot. Although existing multi-material printing technologies have addressed the need for material diversity to some extent, problems still exist, such as low precision during material switching, complex equipment structure, and inefficient compatibility between different materials. High-viscosity materials have poor flowability, and improper control can easily lead to uneven material transfer or discontinuities or unclear boundaries when switching between different materials. Therefore, it is necessary to design a line transfer multi-material additive manufacturing equipment and method to achieve precise switching between multiple materials and effectively solve the flow and curing problems of high-viscosity materials. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a line transfer multi-material additive manufacturing equipment and method, which not only optimizes the structure of the multi-material additive manufacturing equipment and improves the stability and ease of operation, but also overcomes the precision and material compatibility problems of existing high-viscosity photocurable materials in multi-material additive manufacturing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A line transfer multi-material additive manufacturing equipment includes a frame, a station switching module, a lifting module, a forming module, and a printing platform;

[0007] The station switching module is fixedly installed on the frame. The printing platform is connected to the station switching module and is located above the station switching module. The station switching module is used to drive the printing platform to move horizontally on the frame.

[0008] The frame is equipped with at least one aluminum profile frame, and each aluminum profile frame is equipped with a lifting module, which is used to adjust the height of the forming module;

[0009] The lifting module is equipped with a forming module, which is used to lay out the film transfer material and selectively transfer the material to the printing platform.

[0010] The station switching module drives the printing platform to move below or between the forming modules. When the printing platform moves below the forming module, the device is in the model printing state; when the printing platform moves between the forming modules, the device is in the material switching state. The station switching module causes the printing platform to move horizontally, so that the forming module can complete the line-by-line laying, forming and release of the material on the printing platform, and achieve coverage from line to surface, realizing low shear force laying, low cost and high efficiency forming and low peel force release of high viscosity and low flowability materials.

[0011] Furthermore, the workstation switching module includes a translation motor, optical shafts, optical shaft brackets, synchronous belts, synchronous pulleys, synchronous belt brackets, and a platform base. The frame has two parallel optical shafts and two synchronous belts. The two ends of the two optical shafts are fixedly mounted on the frame via optical shaft brackets. A translation motor is fixedly mounted on one side of the frame, and two synchronous belt brackets are fixedly mounted on the other side. Synchronous pulleys are mounted on the two synchronous belt brackets and on the motor shafts on both sides of the translation motor. The two ends of the two synchronous belts are respectively connected to the synchronous pulleys on the synchronous belt brackets and the synchronous pulleys on the motor shafts. The platform base is slidably connected to the optical shafts and synchronous belts, and the printing platform is fixed on the platform base. The translation motor drives the printing platform to move along the optical shafts via the synchronous belts.

[0012] Furthermore, box-shaped sliders are connected to both sides of the platform base, and the box-shaped sliders are fitted outside the optical axis so that the platform base can move along the extension direction of the two optical axes.

[0013] Furthermore, timing belt pressure plates are provided on both sides of the platform base. The timing belt is fixed to the platform base through the timing belt pressure plates so that the timing belt drives the platform base to move.

[0014] Furthermore, the aluminum profile frame has an inverted "U" shaped structure. The aluminum profile frame is provided with a connecting section and a vertical section. Both ends of the connecting section are connected to the vertical section. The top of the vertical section is fixedly connected to the connecting section, and the bottom of the vertical section is fixedly connected to the frame.

[0015] Furthermore, the lifting module includes a lifting motor, a nut seat, a lead screw, a lead screw nut, an adapter plate, and a roller assembly. The lifting motor is installed at the bottom of both sides of the aluminum profile frame, and the nut seat is installed at the top of both sides of the aluminum profile frame. One end of the lead screw is connected to the nut seat, and the other end is connected to the motor shaft of the lifting motor through a coupling. A lead screw nut is provided on the lead screw, and the adapter plate is fixed on the lead screw nut. The adapter plate is connected to the roller assembly, and the roller assembly is connected to the forming module. The lifting motor drives the adapter plate to move up and down in the vertical direction through the lead screw.

[0016] Furthermore, the roller assembly includes a first roller fixing plate, a second roller fixing plate, a roller shaft, and several rollers. The first roller fixing plate is located on the side of the vertical section of the aluminum profile frame near the lead screw, and the second roller fixing plate is located on the side of the vertical section of the aluminum profile frame away from the lead screw. The second roller fixing plate is correspondingly arranged with the first roller fixing plate. The first roller fixing plate is fixedly connected to the adapter plate. Several rollers are installed between the first roller fixing plate and the second roller fixing plate through the roller shaft. The rollers are connected to the aluminum profile frame so that the roller assembly can slide up and down along the aluminum profile frame.

[0017] Furthermore, the forming module includes a fixed frame, an optical engine, a release film, a rotating shaft, a transmission assembly, and a scraper. The fixed frame is fixedly connected to the lifting module. The optical engine, rotating shaft, and transmission assembly are all mounted on the fixed frame. The optical engine is located in the middle of the fixed frame. The fixed frame is equipped with several rotating shafts, which are arranged around the optical engine. The transmission assembly is connected to the rotating shafts. The release film is laid on the rotating shafts. The scraper is installed on the top of the fixed frame. The transmission assembly drives the rotating shaft to rotate the release film. At the same time, the scraper spreads the paste on the release film evenly. The optical engine performs photocuring on the paste on the release film, so that the paste is transformed into a solidified body already formed on the printing platform.

[0018] Furthermore, the fixing frame includes a mounting plate, a left rotating shaft fixing plate, and a right rotating shaft fixing plate. The fixing frame has two mounting plates, which are respectively connected to the lifting modules on both sides of the aluminum profile frame. The left rotating shaft fixing plate is fixedly connected to one of the mounting plates, and the right rotating shaft fixing plate is fixedly connected to the other mounting plate. The two mounting plates are connected by a rotating shaft, and the left rotating shaft fixing plate and the right rotating shaft fixing plate are connected by a rotating shaft.

[0019] Furthermore, the transmission assembly includes a transmission motor, a transmission belt, and a transmission pulley. The transmission motor is mounted on the right rotating shaft fixing plate, and the transmission pulley is mounted on the motor shaft of the transmission motor. The transmission pulley is mounted on one end of the rotating shaft near the right rotating shaft fixing plate. The transmission belt is connected to the transmission pulley. The transmission motor drives the transmission pulley to rotate, thereby moving the transmission belt, and the release film covered on the transmission belt rotates accordingly.

[0020] Furthermore, the mounting bracket has an optical engine mounting plate inside, and the optical engine is fixedly mounted on the optical engine mounting plate. The optical engine is located between the left rotating shaft mounting plate and the right rotating shaft mounting plate, and the optical engine is positioned downwards.

[0021] A line transfer multi-material additive manufacturing method, employing the line transfer multi-material additive manufacturing equipment described above, includes the following steps:

[0022] S1. Pour the high-viscosity slurry onto one or more molding modules;

[0023] S2. The station switching module is activated, moving the printing platform below the forming module;

[0024] S3. The lifting module is activated, lowering the forming module to the distance above the printing platform where the required layer thickness is needed;

[0025] S4. The forming module starts, spreads the high-viscosity slurry evenly and transports it above the printing platform. The forming module performs photocuring on the high-viscosity slurry from line to surface, and the formed cured body is bonded to the printing platform.

[0026] S5. The station switching module drives the printing platform to move along the forming direction to achieve photocuring of the entire layer of slurry;

[0027] S6. After the slurry layer has been cured, the lifting module drives the forming module to rise.

[0028] S7. The station switching module moves the printing platform to the next forming module and cycles through S3-S7 until the photopolymerization process is complete.

[0029] In summary, the present invention has the following advantages:

[0030] 1. Improved accuracy in multi-material switching and stable printing quality: This invention solves the problem of low material switching accuracy in existing multi-material additive manufacturing technologies by introducing a station switching module in conjunction with multiple forming modules. This invention enables precise switching between various mutually exclusive high-viscosity resin-based photocurable ceramic slurries, avoiding uneven or inaccurate material transfer, significantly improving the accuracy and stability of printed parts, and ensuring that the forming quality of each layer of material meets the expected standards.

[0031] 2. Achieving efficient synchronous operation of multi-material additive manufacturing: The station switching module and lifting module design of this invention can precisely control the transfer operation of the forming module, enabling the simultaneous use of different high-viscosity photocurable ceramic slurries on the same sample for forming. This avoids the problems of precision loss and low efficiency caused by station switching in traditional technologies, thereby achieving efficient and precise multi-material additive manufacturing.

[0032] 3. Improved processing capacity for high-viscosity materials: High-viscosity materials often face problems such as poor flowability and uneven curing during additive manufacturing. Through an optimized forming module, this invention can effectively process high-viscosity resins and ceramic slurries, ensuring smooth transfer and photocuring of materials during the printing process, and meeting the printing needs of more complex and high-performance materials.

[0033] 4. Simplify equipment structure and improve operating efficiency: Compared with traditional multi-nozzle or multi-station switching technology, this invention achieves smooth translation of the printing platform and smooth transfer of materials through modular design and precision control system, which makes the equipment more reliable and stable in operation, reduces the complexity of equipment maintenance and debugging, and improves operating efficiency. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the device of the present invention.

[0035] Figure 2 This is a structural diagram of the workstation switching module.

[0036] Figure 3 This is a structural schematic diagram of the lifting module.

[0037] Figure 4 This is a schematic diagram of the forming module.

[0038] In the picture:

[0039] 1-Frame; 2-Station switching module; 3-Lifting module; 4-Forming module; 201-Optical axis bracket; 202-Optical axis; 203-Translation motor bracket; 204-Translation motor; 205-Synchronous belt pulley; 206-Synchronous belt; 207-Synchronous belt bracket; 208-Box-type slider; 209-Synchronous belt pressure plate; 210-Platform base; 211-Printing platform; 301-Lifting motor; 302-Lifting motor bracket; 303-Coupling; 304-Lead screw; 305-Lead screw 306-Rod nut; 307-Adapter plate; 308-First roller fixing plate; 309-Second roller fixing plate; 310-Roller shaft; 311-Nut seat; 401-Mounting plate; 402-Left shaft fixing plate; 403-Right shaft fixing plate; 404-Shaft; 405-Drive motor; 406-Drive pulley; 407-Drive belt; 408-Optical engine mounting plate; 409-Optical engine; 410-Release film; 411-Scraper mounting plate; 412-Scraper. Detailed Implementation

[0040] The present invention will now be described in further detail.

[0041] like Figure 1 As shown, a line transfer multi-material additive manufacturing equipment includes a frame 1, a station switching module 2, a lifting module 3, a forming module 4, and a printing platform 211;

[0042] The station switching module 2 is fixedly installed on the frame 1. The printing platform 211 is connected to the station switching module 2. The printing platform 211 is set above the station switching module 2. The station switching module 2 is used to drive the printing platform 211 to move horizontally on the frame 1.

[0043] The frame 1 is provided with at least one aluminum profile frame, and each aluminum profile frame is equipped with a lifting module 3, which is used to adjust the height of the forming module 4;

[0044] The lifting module 3 is equipped with a forming module 4, which is used to lay the film transfer material and selectively transfer the material to the printing platform 211;

[0045] The station switching module 2 drives the printing platform 211 to move below or between the forming modules 4. When the printing platform 211 moves below the forming module 4, the device is in the printing model state; when the printing platform 211 moves between the forming modules 4, the device is in the material switching state. The station switching module 2 causes the printing platform 211 to move horizontally, so that the forming module 4 uses a combination of film transfer material laying and line spot optical engine to complete the line-by-line laying, forming and release of the material on the printing platform 211, and achieves coverage from line to surface, realizing low shear force laying, low cost and high efficiency forming and low peel force release of high viscosity and low flowability materials.

[0046] like Figure 2 As shown, the workstation switching module 2 includes a translation motor 204, an optical axis 202, an optical axis bracket 201, a synchronous belt 206, a synchronous belt pulley 205, a synchronous belt bracket 207, and a platform base 210. The frame 1 is equipped with two parallel optical axes 202 and two synchronous belts 206. The two ends of the two optical axes 202 are fixedly mounted on the frame 1 via optical axis brackets 201. A translation motor 204 is fixedly mounted on one side of the frame 1, and two synchronous belt brackets 207 are fixedly mounted on the other side. Synchronous pulleys 205 are mounted on both sides of the synchronous belt bracket 207 and the motor shafts of the translation motor 204. The two ends of the two synchronous belts 206 are respectively connected to the synchronous pulleys 205 on the synchronous belt bracket 207 and the synchronous pulleys 205 on the motor shafts. The platform base 210 is slidably connected to the optical axis 202 and the synchronous belts 206, and the printing platform 211 is fixed on the platform base 210. The translation motor 204 drives the printing platform 211 to move along the optical axis 202 via the synchronous belts 206. Box-type sliders 208 are connected to both sides of the platform base 210, and the box-type sliders 208 are fitted outside the optical axis 202 to allow the platform base 210 to move along the extending direction of the two optical axes 202. Synchronous belt pressure plates 209 are also provided on both sides of the platform base 210, and the synchronous belts 206 are fixed to the platform base 210 via the synchronous belt pressure plates 209 to drive the platform base 210 to move. The box-type slider 208 cooperates with the synchronous belt pressure plate 209 to ensure that the synchronous belt 206 always runs smoothly during operation. The frame 1 is equipped with a translation motor bracket 203, and the translation motor 204 is fixedly mounted on the translation motor bracket 203.

[0047] like Figure 3 As shown, the aluminum profile frame has an inverted "U" shaped structure. The aluminum profile frame is provided with a connecting section and a vertical section. Both ends of the connecting section are connected to the vertical section. The top of the vertical section is fixedly connected to the connecting section, and the bottom of the vertical section is fixedly connected to the frame 1.

[0048] like Figure 3 As shown, the lifting module 3 includes a lifting motor 301, a nut seat 311, a lead screw 304, a lead screw nut 305, an adapter plate 306, and a roller assembly. The lifting motor 301 is installed at the bottom of both sides of the aluminum profile frame. Specifically, the bottom of the aluminum profile frame is provided with a lifting motor bracket 302, and the lifting motor 301 is fixedly connected to the lifting motor bracket 302. Nut seat 311 is installed on the top of both sides of the aluminum profile frame. One end of the lead screw 304 is connected to the nut seat 311, and the other end is connected to the motor shaft of the lifting motor 301 through the coupling 303. The lead screw 304 is provided with a lead screw nut 305. The adapter plate 306 is fixed on the lead screw nut 305. The adapter plate 306 is connected to the roller assembly. The roller assembly is connected to the forming module 4. The lifting motor 301 drives the lead screw 304 to rotate. The rotation of the lead screw 304 drives the lead screw nut 305 to move along the lead screw 304, thereby causing the adapter plate 306 to move up and down in the vertical direction to adjust the height of the forming module 4. The roller assembly includes a first roller fixing plate 307, a second roller fixing plate 308, a roller shaft 310, and several rollers 309. The first roller fixing plate 307 is located on the side of the vertical section of the aluminum profile frame near the lead screw 304, and the second roller fixing plate 308 is located on the side of the vertical section of the aluminum profile frame away from the lead screw 304. The second roller fixing plate 308 is correspondingly arranged with the first roller fixing plate 307. The first roller fixing plate 307 is fixedly connected to the adapter plate 306. Several rollers 309 are installed between the first roller fixing plate 307 and the second roller fixing plate 308 via the roller shaft 310, ensuring the stability and accuracy of the lifting module 3 during movement. The rollers 309 are connected to the aluminum profile frame so that the roller assembly can slide up and down along the aluminum profile frame. The lifting module 3 can precisely adjust the working distance between the forming module 4 and the printing platform 211, ensuring the transfer accuracy between different workstations and adapting to the printing needs of different materials.

[0049] like Figure 4As shown, the forming module 4 includes a fixed frame, an optical engine 409, a release film 410, a rotating shaft 404, a transmission assembly, and a scraper 412. The fixed frame is fixedly connected to the lifting module 3. The optical engine 409, the rotating shaft 404, and the transmission assembly are all mounted on the fixed frame. The optical engine 409 is located in the middle of the fixed frame. The fixed frame is provided with several rotating shafts 404, which are arranged around the optical engine 409. The transmission assembly is connected to the rotating shafts 404. The release film 410 is laid on the rotating shafts 404. The scraper 412 is mounted on the top of the fixed frame. Specifically, the top of the fixed frame is provided with a scraper mounting plate 411, and the scraper 412 is fixedly mounted on the scraper mounting plate 411. The transmission component drives the rotating shaft 404 to rotate the release film 410. At the same time, the scraper 412 spreads the paste on the release film 410 evenly. The optical engine 409 performs photocuring on the paste on the release film 410, so that the paste is transformed into a solidified body on the printing platform 211. The fixing frame includes a mounting plate 401, a left rotating shaft fixing plate 402, and a right rotating shaft fixing plate 403. The fixing frame has two mounting plates 401, which are respectively connected to the lifting modules 3 on both sides of the aluminum profile frame. The left rotating shaft fixing plate 402 is fixedly connected to one of the mounting plates 401, and the right rotating shaft fixing plate 403 is fixedly connected to the other mounting plate 401. The two mounting plates 401 are connected by a rotating shaft 404, and the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403 are connected by a rotating shaft 404. The transmission assembly includes a drive motor 405, a drive belt 407, and a drive pulley 406. The drive motor 405 is mounted on the right rotating shaft fixing plate 403. The drive pulley 406 is mounted on the motor shaft of the drive motor 405. The drive pulley 406 is mounted on one end of the rotating shaft 404 near the right rotating shaft fixing plate 403. The drive belt 407 is connected to the drive pulley 406. The drive motor 405 drives the drive pulley 406 to rotate, thereby moving the drive belt 407. The release film 410 covered on the drive belt 407 rotates accordingly. Preferably, the mounting bracket has six rotating shafts 404, two of which are connected between two mounting plates 401; the other four rotating shafts 404 are connected between the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403, specifically two rotating shafts 404 are located at the top of the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403, and two rotating shafts 404 are located at the bottom of the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403. The two rotating shafts 404 located at the top of the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403 are equipped with drive pulleys 406, which are connected to the drive pulleys 406 on the drive motor 405 via drive belts 407. The release film 410 cooperates with the six rotating shafts 404 and is driven by the friction between itself and the rubber layer on the top rotating shaft 404. The mounting bracket has an optical engine mounting plate 408 inside, and an optical engine 409 is fixedly mounted on the optical engine mounting plate 408. The optical engine 409 is located between the left rotating shaft mounting plate 402 and the right rotating shaft mounting plate 403, and the optical engine 409 is positioned downwards.

[0050] A line transfer multi-material additive manufacturing method, employing the line transfer multi-material additive manufacturing equipment described above, includes the following steps:

[0051] S1. Pour the high-viscosity slurry onto one or more forming modules 4;

[0052] S2. The station switching module 2 is activated, moving the printing platform 211 below the forming module 4;

[0053] S3. The lifting module 3 is activated, lowering the forming module 4 to the distance above the printing platform 211 where the required layer thickness is required;

[0054] S4. The forming module 4 is started. The forming module 4 drives the release film 410 to rotate, so that the high viscosity slurry on the release film 410 passes through the scraper 412. The scraper 412 makes the slurry evenly spread on the release film 410. When the forming module 4 transports the high viscosity slurry to the top of the printing platform 211, the forming module 4 performs photocuring on the high viscosity slurry from line to surface, and the formed cured body is bonded to the printing platform 211.

[0055] S5. The station switching module 2 drives the printing platform 211 to move along the forming direction to achieve photocuring of the entire layer of slurry;

[0056] S6. After the slurry layer is cured, the lifting module 3 drives the forming module 4 to rise.

[0057] S7. The station switching module 2 moves the printing platform 211 to the next forming module 4 and cycles through S3-S7 until the photopolymerization forming is completed.

[0058] The main function of this invention is to solve the technical problems of equipment complexity, material switching accuracy, and high-viscosity material handling in existing multi-material additive manufacturing processes. Through the coordinated operation of the station switching module 2, the lifting module 3, and the forming module 4, mutually exclusive high-viscosity resin-based photocurable ceramic slurries can be used on the same printing platform 211. The forming module 4 enables precise material transfer and photocuring, achieving accurate switching between different materials and smooth transfer and forming of high-viscosity materials.

[0059] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A line transfer multi-material additive manufacturing equipment, characterized in that: Includes a frame, workstation switching module, lifting module, forming module, and printing platform; The station switching module is fixedly installed on the frame. The printing platform is connected to the station switching module and is located above the station switching module. The station switching module is used to drive the printing platform to move horizontally on the frame. The frame is equipped with at least one aluminum profile frame, and each aluminum profile frame is equipped with a lifting module, which is used to adjust the height of the forming module; The lifting module is equipped with a forming module, which is used to lay out the film transfer material and selectively transfer the material to the printing platform. The forming module includes a fixed frame, an optical engine, a release film, a rotating shaft, a transmission component, and a scraper. The fixed frame is fixedly connected to the lifting module. The optical engine, rotating shaft, and transmission component are all mounted on the fixed frame. The optical engine is located in the middle of the fixed frame. The fixed frame has several rotating shafts arranged around the optical engine. The transmission component is connected to the rotating shafts. The release film is laid on the rotating shafts. The scraper is mounted on the top of the fixed frame. The transmission component drives the rotating shaft to rotate the release film. At the same time, the scraper spreads the paste on the release film evenly. The optical engine performs photocuring on the paste on the release film to transform the paste into a solidified body already formed on the printing platform. The station switching module drives the printing platform to move below or between the forming modules. When the printing platform moves below the forming module, the device is in the model printing state; when the printing platform moves between the forming modules, the device is in the material switching state. The station switching module causes the printing platform to move horizontally, so that the forming module can complete the line-by-line laying, forming and release of the material on the printing platform, and achieve coverage from line to surface.

2. The line transfer multi-material additive manufacturing equipment according to claim 1, characterized in that: The workstation switching module includes a translation motor, optical shafts, optical shaft brackets, synchronous belts, synchronous pulleys, synchronous belt brackets, and a platform base. The frame has two parallel optical shafts and two synchronous belts. The two ends of the two optical shafts are fixedly mounted on the frame via optical shaft brackets. A translation motor is fixedly mounted on one side of the frame, and two synchronous belt brackets are fixedly mounted on the other side. Synchronous pulleys are mounted on the two synchronous belt brackets and on the motor shafts on both sides of the translation motor. The two ends of the two synchronous belts are respectively connected to the synchronous pulleys on the synchronous belt brackets and the synchronous pulleys on the motor shafts. The platform base is slidably connected to the optical shafts and synchronous belts, and the printing platform is fixed on the platform base. The translation motor drives the printing platform to move along the optical shafts via the synchronous belts.

3. The line transfer multi-material additive manufacturing equipment according to claim 2, characterized in that: Box-type sliders are connected to both sides of the platform base. The box-type sliders are fitted outside the optical axis so that the platform base can move along the extension direction of the two optical axes.

4. The line transfer multi-material additive manufacturing equipment according to claim 2, characterized in that: The platform base is also equipped with timing belt pressure plates on both sides. The timing belt is fixed to the platform base by the timing belt pressure plates so that the timing belt drives the platform base to move.

5. The line transfer multi-material additive manufacturing equipment according to claim 1, characterized in that: The aluminum profile frame has an inverted "U" shape. The aluminum profile frame is equipped with a connecting section and a vertical section. Both ends of the connecting section are connected to the vertical section. The top of the vertical section is fixedly connected to the connecting section, and the bottom of the vertical section is fixedly connected to the frame.

6. The line transfer multi-material additive manufacturing equipment according to claim 5, characterized in that: The lifting module includes a lifting motor, a nut seat, a lead screw, a lead screw nut, an adapter plate, and a roller assembly. The lifting motor is installed at the bottom of both sides of the aluminum profile frame, and the nut seat is installed at the top of both sides of the aluminum profile frame. One end of the lead screw is connected to the nut seat, and the other end is connected to the motor shaft of the lifting motor through a coupling. A lead screw nut is provided on the lead screw, and the adapter plate is fixed on the lead screw nut. The adapter plate is connected to the roller assembly, and the roller assembly is connected to the forming module. The lifting motor drives the adapter plate to move up and down vertically through the lead screw.

7. The line transfer multi-material additive manufacturing equipment according to claim 6, characterized in that: The roller assembly includes a first roller fixing plate, a second roller fixing plate, a roller shaft, and several rollers. The first roller fixing plate is located on the side of the vertical section of the aluminum profile frame near the lead screw, and the second roller fixing plate is located on the side of the vertical section of the aluminum profile frame away from the lead screw. The second roller fixing plate is correspondingly arranged with the first roller fixing plate. The first roller fixing plate is fixedly connected to the adapter plate. Several rollers are installed between the first roller fixing plate and the second roller fixing plate through the roller shaft. The rollers are connected to the aluminum profile frame so that the roller assembly can slide up and down along the aluminum profile frame.

8. The line transfer multi-material additive manufacturing equipment according to claim 6, characterized in that: The mounting bracket contains an optical engine mounting plate, on which the optical engine is fixedly mounted with the optical engine facing downwards.

9. A method for multi-material additive manufacturing via line transfer printing, characterized in that: The line transfer multi-material additive manufacturing equipment according to any one of claims 1-8 includes the following steps: S1. Pour the high-viscosity slurry onto one or more molding modules; S2. The station switching module is activated, moving the printing platform below the forming module; S3. The lifting module is activated, lowering the forming module to the distance above the printing platform where the required layer thickness is needed; S4. The forming module starts, spreads the high-viscosity slurry evenly and transports it above the printing platform. The forming module performs photocuring on the high-viscosity slurry from line to surface, and the formed cured body is bonded to the printing platform. S5. The station switching module drives the printing platform to move along the forming direction to achieve photocuring of the entire layer of slurry; S6. After the slurry layer has been cured, the lifting module drives the forming module to rise. S7. The station switching module moves the printing platform to the next forming module and cycles through S3-S7 until the photopolymerization process is complete.

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