Linear transfer printing multi-material additive manufacturing equipment and method

Abstract

The invention relates to line transfer printing multi-material additive manufacturing equipment and method. The equipment 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; the rack is provided with at least one aluminum profile frame, and each aluminum profile frame is provided with a lifting module. A forming module is arranged on the lifting module and is used for laying a film transfer printing material and selectively transferring the material to the printing platform; the station switching module enables the printing platform to move in the horizontal direction, the forming module completes line-by-line laying, forming and release of materials on the printing platform, and line-to-surface covering is achieved. According to the multi-material additive manufacturing equipment, the structure of the multi-material additive manufacturing equipment is optimized, the stability and the operation convenience of the equipment are improved, and the problems of precision and material compatibility of an existing high-viscosity photocuring material in the multi-material additive manufacturing technology are solved.

Description

Technical Field

[0001] The present invention relates to the field of additive manufacturing technology, and in particular to a line transfer multi-material additive manufacturing device and method. Background Art

[0002] Additive manufacturing technology has developed rapidly in the manufacturing industry in recent years and has been widely used in aerospace, automotive, medical equipment, jewelry manufacturing and other fields. Compared with traditional manufacturing methods, additive manufacturing technology has higher design freedom and lower production costs, and can quickly produce complex structures and small batches of customized parts. However, existing additive manufacturing equipment can usually only use a single material for printing, which limits its application in the production of parts that require multiple functions and material properties.

[0003] Therefore, multi-material additive manufacturing technology, which can use different materials in the same printing process to achieve the multifunctional design requirements of parts, has become a research hotspot. Although the existing multi-material printing technology has solved the demand for material diversification to a certain extent, there are still problems such as low precision when alternating materials, complex equipment structure, and inefficient compatibility between different materials. High-viscosity materials have poor fluidity. If not properly controlled, it can easily lead to uneven material transfer or faults or unclear boundaries when switching between different materials. Therefore, it is necessary to design a line transfer multi-material additive manufacturing device and method to achieve precise switching of multiple materials and effectively solve the flow and solidification problems of high-viscosity materials. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide a line transfer multi-material additive manufacturing device and method, which 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 accuracy and material compatibility problems of existing high-viscosity photocurable materials in multi-material additive manufacturing technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: A line transfer multi-material additive manufacturing device, comprising a frame, a station switching module, a lifting module, a forming module and a printing platform; The station switching module is fixedly installed on the frame, the printing platform is connected to the station switching module, the printing platform is arranged above the station switching module, and the station switching module is used to drive the printing platform to move horizontally on the frame; At least one aluminum profile rack is provided on the rack, and each aluminum profile rack is installed with a lifting module, and the lifting module is used to adjust the height of the forming module; A forming module is provided on the lifting module, and the forming module is used to spread the film transfer material and selectively transfer the material to the printing platform; The station switching module drives the printing platform to move under the forming module or between the forming modules. When the printing platform moves to under the forming module, the equipment is in the printing model state; when the printing platform moves between the forming modules, the equipment is in the material switching state; the station switching module enables the printing platform to move in the horizontal direction, so that the forming module completes the line-by-line laying, forming and release of the material on the printing platform, and realizes coverage from line to surface, realizing low shear force laying, low-cost and efficient forming and low peeling force release of high-viscosity and low-fluidity materials.

[0006] Furthermore, the workstation switching module includes a translation motor, an optical axis, an optical axis bracket, a synchronous belt, a synchronous belt pulley, a synchronous belt bracket and a platform base. The frame is provided with two parallel optical axes and two synchronous belts; the two ends of the two optical axes are fixedly mounted on the frame through the optical axis brackets; the translation motor is fixedly mounted on one side of the frame, and two synchronous belt brackets are fixedly mounted on the other side. Synchronous belt pulleys are mounted on the two synchronous belt brackets and the motor shafts on both sides of the translation motor, and the two ends of the two synchronous belts are respectively connected with the synchronous belt pulleys on the synchronous belt bracket and the synchronous belt pulleys on the motor shaft; the platform base is respectively slidably connected to the optical axis and the synchronous belt, and the printing platform is fixed on the platform base; the translation motor drives the printing platform to move along the optical axis through the synchronous belt.

[0007] Furthermore, box-type sliders are respectively connected to both sides of the platform base, and the box-type sliders are sleeved outside the optical axis to enable the platform base to move along the extension direction of the two optical axes.

[0008] Furthermore, synchronous belt pressure plates are provided on both sides of the platform base, and the synchronous belt is fixed to the platform base through the synchronous belt pressure plates so that the synchronous belt drives the platform base to move.

[0009] Furthermore, the aluminum profile frame is an inverted "U" shaped structure, and is provided with a connecting section and a vertical section. Both ends of the connecting section are connected to the vertical sections, 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.

[0010] Furthermore, the lifting module includes a lifting motor, a nut seat, a screw rod, a 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 screw rod is connected to the nut seat, and the other end is connected to the motor shaft of the lifting motor through a coupling. A screw rod nut is provided on the screw rod, and the adapter plate is fixed on the screw rod 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 screw rod.

[0011] Furthermore, the roller assembly includes a first roller fixing plate, a second roller fixing plate, a roller shaft and a plurality of rollers. The first roller fixing plate is arranged on a side of the vertical section of the aluminum profile frame close to the screw rod, the second roller fixing plate is arranged on a side of the vertical section of the aluminum profile frame away from the screw rod, the second roller fixing plate is arranged corresponding to the first roller fixing plate, the first roller fixing plate is fixedly connected to the adapter plate, a plurality of rollers are installed between the first roller fixing plate and the second roller fixing plate through the roller shaft, and the rollers are connected to the aluminum profile frame so that the roller assembly slides up and down along the aluminum profile frame.

[0012] 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, the rotating shaft and the transmission assembly are all installed on the fixed frame, the optical engine is arranged in the middle of the fixed frame, the fixed frame is provided with a plurality of rotating shafts, the plurality of rotating shafts are arranged around the optical engine, the transmission assembly is connected to the rotating shaft, the release film is spread on the rotating shaft, the scraper is installed on the top of the fixed frame, the transmission assembly drives the rotating shaft to drive the release film to rotate, and at the same time the scraper evenly spreads the slurry on the release film, and the optical engine performs photocuring on the slurry on the release film to transform the slurry into a formed solidified body on the printing platform.

[0013] Furthermore, the fixed frame includes a mounting plate, a left shaft fixing plate and a right shaft fixing plate. The fixed frame is provided with two mounting plates, and the two mounting plates are respectively connected to the lifting modules on both sides of the aluminum profile frame. The left shaft fixing plate is fixedly connected to one of the mounting plates, and the right shaft fixing plate is fixedly connected to the other mounting plate. The two mounting plates are connected through a rotating shaft, and the left shaft fixing plate and the right shaft fixing plate are connected through a rotating shaft.

[0014] Furthermore, the transmission assembly includes a transmission motor, a transmission belt and a transmission pulley. The transmission motor is installed on the right rotating shaft fixing plate. The motor shaft of the transmission motor is installed with a transmission pulley. The transmission pulley is installed at one end of the rotating shaft close to the right rotating shaft fixing plate. The transmission belt is cooperatively connected with 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.

[0015] Furthermore, an optical engine mounting plate is provided inside the fixing frame, the optical engine is fixedly mounted on the optical engine mounting plate, the optical engine is arranged between the left rotating shaft fixing plate and the right rotating shaft fixing plate, and the optical engine is arranged downward.

[0016] A line transfer multi-material additive manufacturing method, using the line transfer multi-material additive manufacturing device as described above, comprises the following steps: S1. Pour the high viscosity slurry onto one or more forming modules; S2. The station switching module is started and the printing platform is moved below the forming module; S3. The lifting module is started, and the forming module is lowered to the distance above the printing platform to the required layer thickness; S4. The forming module is started, the high viscosity slurry is evenly spread and transported to the top of the printing platform, the forming module performs light curing on the high viscosity slurry from line to surface, and the formed solidified body is bonded to the printing platform; S5. The station switching module drives the printing platform to move along the forming direction to achieve light curing of the entire layer of slurry; S6. After a layer of slurry is photocured, 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 S3-S7 until the photocuring forming is completed.

[0017] In general, the present invention has the following advantages: 1. Improve the accuracy of multi-material switching and ensure stable printing quality: The present invention solves the problem of low material switching accuracy in existing multi-material additive manufacturing technology by introducing a coordinated design of a station switching module and multiple forming modules. The present invention can accurately switch between multiple mutually exclusive high-viscosity resin-based photocurable ceramic slurries, avoiding the problem of uneven or inaccurate material transfer, significantly improving the accuracy and stability of the printed parts, and ensuring that the molding quality of each layer of material meets the expected standards.

[0018] 2. Realize efficient synchronous operation of multi-material additive manufacturing: The station switching module and lifting module design of the present invention can accurately control the transfer work of the forming module, so that different high-viscosity photocuring ceramic slurries can be used for molding on the same sample at the same time, avoiding the loss of precision and low efficiency caused by station switching in traditional technology, thereby realizing efficient and accurate multi-material additive manufacturing.

[0019] 3. Improve the processing capability of high-viscosity materials: High-viscosity materials often face problems such as poor fluidity and uneven curing during additive manufacturing. Through the optimized design of the forming module, the present invention can effectively process high-viscosity resins and ceramic slurries, ensure smooth transfer and photocuring of materials during the printing process, and meet the printing needs of more complex and high-performance materials.

[0020] 4. Simplify the equipment structure and improve operational efficiency: Compared with the traditional multi-nozzle or multi-station switching technology, the present invention realizes the smooth translation of the printing platform and the smooth transfer of materials through modular design and precision control system, so that the equipment has higher operational reliability and stability, can reduce the complexity of equipment maintenance and debugging, and improve operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0022] Figure 2 This is a structural diagram of the workstation switching module.

[0023] Figure 3 It is a structural diagram of the lifting module.

[0024] Figure 4 It is a structural schematic diagram of the forming module.

[0025] In the figure: 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 pulley; 206-synchronous belt; 207-synchronous belt bracket; 208-box slider; 209-synchronous belt pressure plate; 210-platform base; 211-printing platform; 301-lifting motor; 302-lifting motor bracket; 303-coupling; 304-screw; 305-screw Rod nut; 306-adapter plate; 307-first roller fixing plate; 308-second roller fixing plate; 309-roller; 310-roller shaft; 311-nut seat; 401-mounting plate; 402-left shaft fixing plate; 403-right shaft fixing plate; 404-shaft; 405-transmission motor; 406-transmission pulley; 407-transmission belt; 408-optical engine mounting plate; 409-optical engine; 410-release film; 411-scraper mounting plate; 412-scraper. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below.

[0027] like Figure 1 As shown, a line transfer multi-material additive manufacturing device includes a frame 1, a station switching module 2, a lifting module 3, a forming module 4 and a printing platform 211; The station switching module 2 is fixedly mounted on the frame 1, the printing platform 211 is connected to the station switching module 2, the printing platform 211 is arranged above the station switching module 2, and the station switching module 2 is used to drive the printing platform 211 to perform horizontal movement on the frame 1; At least one aluminum profile rack is provided on the frame 1, and each aluminum profile rack is installed with a lifting module 3, and the lifting module 3 is used to adjust the height of the forming module 4; A forming module 4 is provided on the lifting module 3, and the forming module 4 is used to lay the film transfer material and selectively transfer the material to the printing platform 211; The station switching module 2 drives the printing platform 211 to move under the forming module 4 or between the forming modules 4. When the printing platform 211 moves to under 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 enables the printing platform 211 to move in the horizontal direction, so that the forming module 4 adopts the method of film transfer material paving and line spot optical engine to complete the line-by-line paving, forming and release of the material on the printing platform 211, and realize the coverage from line to surface, so as to realize the low shear force laying, low-cost and efficient forming and low peeling force release of high-viscosity and low-fluidity materials.

[0028] like Figure 2 As shown, the station 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. Two parallel optical axes 202 and two synchronous belts 206 are provided on the frame 1; the two ends of the two optical axes 202 are fixedly mounted on the frame 1 through the optical axis bracket 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 installed on the motor shafts on both sides of the synchronous belt bracket 207 and the translation motor 204, and the two ends of the two synchronous belts 206 are respectively connected with the synchronous pulleys 205 on the synchronous belt bracket 207 and the synchronous pulleys 205 on the motor shaft; the platform base 210 is slidably connected with the optical axis 202 and the synchronous belt 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 through the synchronous belt 206. Box sliders 208 are respectively connected to both sides of the platform base 210, and the box sliders 208 are sleeved outside the optical axis 202 to enable the platform base 210 to move along the extension direction of the two optical axes 202. Synchronous belt pressing plates 209 are also provided on both sides of the platform base 210, and the synchronous belt 206 is fixed on the platform base 210 through the synchronous belt pressing plates 209, so that the synchronous belt 206 drives the platform base 210 to move. The box slide block 208 cooperates with the synchronous belt pressure plate 209 to ensure that the synchronous belt 206 always keeps stable operation during operation. A translation motor bracket 203 is provided on the frame 1, and the translation motor 204 is fixedly mounted on the translation motor bracket 203.

[0029] like Figure 3 As shown, the aluminum profile frame is an inverted "U" shaped structure, and 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 sections, 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.

[0030] like Figure 3As shown, the lifting module 3 includes a lifting motor 301, a nut seat 311, a screw 304, a 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, a lifting motor bracket 302 is provided at the bottom of the aluminum profile frame, and the lifting motor 301 is fixedly connected to the lifting motor bracket 302. The nut seat 311 is installed on the top of both sides of the aluminum profile frame, one end of the screw rod 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. A screw nut 305 is provided on the screw rod 304, and the adapter plate 306 is fixed on the screw nut 305. The adapter plate 306 is connected to the roller assembly, and the roller assembly is connected to the forming module 4. The lifting motor 301 drives the screw rod 304 to rotate, and the rotation of the screw rod 304 drives the screw nut 305 to move along the screw rod 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 a plurality of rollers 309. The first roller fixing plate 307 is arranged on the side of the vertical section of the aluminum profile frame close to the screw rod 304, the second roller fixing plate 308 is arranged on the side of the vertical section of the aluminum profile frame away from the screw rod 304, the second roller fixing plate 308 is arranged corresponding to the first roller fixing plate 307, the first roller fixing plate 307 is fixedly connected to the adapter plate 306, and a plurality of rollers 309 are installed between the first roller fixing plate 307 and the second roller fixing plate 308 through the roller shaft 310, thereby ensuring the stability and accuracy of the lifting module 3 during the movement. The roller 309 is connected to the aluminum profile frame so that the roller assembly slides up and down along the aluminum profile frame. The lifting module 3 can accurately adjust the working distance between the forming module 4 and the printing platform 211, ensure the transfer accuracy between different stations, and adapt to the printing requirements of different materials.

[0031] 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 installed on the fixed frame. The optical engine 409 is arranged in the middle of the fixed frame. The fixed frame is provided with a plurality of rotating shafts 404. The plurality of rotating shafts 404 are arranged around the optical engine 409. The transmission assembly is connected to the rotating shaft 404. The release film 410 is laid on the rotating shaft 404. The scraper 412 is installed on the top of the fixed frame. Specifically, a scraper mounting plate 411 is provided on the top of the fixed frame, and the scraper 412 is fixedly installed on the scraper mounting plate 411. The transmission assembly drives the rotating shaft 404 to rotate the release film 410, and the scraper 412 evenly spreads the slurry on the release film 410. The optical engine 409 performs photocuring on the slurry on the release film 410 to transform the slurry into a solidified body formed on the printing platform 211. The fixed frame includes a mounting plate 401, a left rotating shaft fixing plate 402 and a right rotating shaft fixing plate 403. The fixed frame is provided with two mounting plates 401, and the two mounting plates 401 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 through the rotating shaft 404, and the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403 are connected through the rotating shaft 404. The transmission assembly includes a transmission motor 405, a transmission belt 407 and a transmission pulley 406. The transmission motor 405 is installed on the right rotating shaft fixing plate 403. The motor shaft of the transmission motor 405 is installed with a transmission pulley 406. The transmission pulley 406 is installed at one end of the rotating shaft 404 close to the right rotating shaft fixing plate 403. The transmission belt 407 is connected with the transmission pulley 406. The transmission motor 405 drives the transmission pulley 406 to rotate, thereby moving the transmission belt 407, and the release film 410 covered on the transmission belt 407 rotates accordingly. Preferably, the fixed frame is provided with six rotating shafts 404, of which two rotating shafts 404 are connected between the 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 arranged 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 arranged at the bottom of the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403. The two rotating shafts 404 arranged at the top of the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403 are installed with transmission pulleys 406, which are respectively connected to the transmission pulleys 406 on the transmission motor 405 through transmission belts 407. The release film 410 cooperates with the six rotating shafts 404 and is driven by the friction between the rubber layer on the top rotating shaft 404. An optical engine mounting plate 408 is provided inside the fixing frame, and an optical engine 409 is fixedly mounted on the optical engine mounting plate 408 . The optical engine 409 is disposed between the left rotating shaft fixing plate 402 and the right rotating shaft fixing plate 403 , and the optical engine 409 is disposed downward.

[0032] A line transfer multi-material additive manufacturing method, using the line transfer multi-material additive manufacturing device as described above, comprises the following steps: S1. Pour the high viscosity slurry onto one or more forming modules 4; S2 station switching module 2 is started, the printing platform 211 is moved to the bottom of the forming module 4; S3 lifting module 3 is started, the forming module 4 is lowered to the distance above the printing platform 211 to the desired layer thickness; S4. The forming module 4 is started, and 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, and the scraper 412 evenly spreads the slurry 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 light curing on the high-viscosity slurry from line to surface, and the formed cured body is bonded to the printing platform 211; S5. The station switching module 2 drives the printing platform 211 to move along the forming direction to achieve light curing of the entire layer of slurry; S6. After a layer of slurry is photocured, the lifting module 3 drives the forming module 4 to rise; S7. The station switching module 2 moves the printing platform 211 to the next forming module 4 and cycles S3-S7 until the photocuring forming is completed.

[0033] Main functions of the present invention: The present invention solves the technical problems of equipment complexity, material switching accuracy, and high-viscosity material processing in the prior art multi-material additive manufacturing process. Through the coordinated work 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, and the materials can be accurately transferred and photocured through the forming module 4, realizing accurate switching of different materials and smooth transfer and molding of high-viscosity materials.

[0034] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A line transfer multi-material additive manufacturing device, characterized in that: It includes a frame, a station switching module, a lifting module, a forming module and a printing platform; The station switching module is fixedly installed on the frame, the printing platform is connected to the station switching module, the printing platform is arranged above the station switching module, and the station switching module is used to drive the printing platform to move horizontally on the frame; At least one aluminum profile rack is provided on the rack, and each aluminum profile rack is installed with a lifting module, and the lifting module is used to adjust the height of the forming module; A forming module is provided on the lifting module, and the forming module is used to spread the film transfer material and selectively transfer the material to the printing platform; The station switching module drives the printing platform to move under the forming module or between the forming modules. When the printing platform moves to under the forming module, the equipment is in the printing model state; when the printing platform moves between the forming modules, the equipment is in the material switching state; the station switching module enables the printing platform to move in the horizontal direction, so that the forming module completes the line-by-line laying, forming and release of the material on the printing platform, and realizes coverage from line to surface.

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

3. A line transfer multi-material additive manufacturing device according to claim 2, characterized in that: Box-type sliding blocks are respectively connected to both sides of the platform base, and the box-type sliding blocks are sleeved 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 device according to claim 2, characterized in that: Synchronous belt pressure plates are also provided on both sides of the platform base, and the synchronous belt is fixed to the platform base through the synchronous belt pressure plates so that the synchronous belt drives the platform base to move.

5. The line transfer multi-material additive manufacturing device according to claim 1, characterized in that: The aluminum profile frame is an inverted "U" shaped structure, and is provided with a connecting section and a vertical section. Both ends of the connecting section are connected to the vertical sections, 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 device according to claim 5, characterized in that: The lifting module includes a lifting motor, a nut seat, a screw rod, a 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 screw rod is connected to the nut seat, and the other end is connected to the motor shaft of the lifting motor through a coupling. A screw nut is provided on the screw rod, and the adapter plate is fixed on the 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 screw rod.

7. The line transfer multi-material additive manufacturing device 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 a plurality of rollers. The first roller fixing plate is arranged on a side of the vertical section of the aluminum profile frame close to the screw rod, the second roller fixing plate is arranged on a side of the vertical section of the aluminum profile frame away from the screw rod, the second roller fixing plate is arranged corresponding to the first roller fixing plate, the first roller fixing plate is fixedly connected to the adapter plate, a plurality of rollers are installed between the first roller fixing plate and the second roller fixing plate through the roller shaft, and the rollers are connected to the aluminum profile frame so that the roller assembly slides up and down along the aluminum profile frame.

8. The line transfer multi-material additive manufacturing device according to claim 6, characterized in that: 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, the rotating shaft and the transmission assembly are all installed on the fixed frame. The optical engine is arranged in the middle of the fixed frame. The fixed frame is provided with a plurality of rotating shafts. The plurality of rotating shafts are arranged around the optical engine. The transmission assembly is connected to the rotating shaft. The release film is spread on the rotating shaft. The scraper is installed on the top of the fixed frame. The transmission assembly drives the rotating shaft to drive the release film to rotate. At the same time, the scraper evenly spreads the slurry on the release film. The optical engine performs photocuring on the slurry on the release film to transform the slurry into a formed solidified body on the printing platform.

9. The line transfer multi-material additive manufacturing device according to claim 8, characterized in that: An optical engine mounting plate is provided inside the fixing frame, and the optical engine is fixedly mounted on the optical engine mounting plate, with the optical engine being arranged downward.

10. A line transfer multi-material additive manufacturing method, characterized in that: The line transfer multi-material additive manufacturing device according to any one of claims 1 to 9 comprises the following steps: S1. Pour the high viscosity slurry onto one or more forming modules; S2. The station switching module is started and the printing platform is moved below the forming module; S3. The lifting module is started, and the forming module is lowered to the distance above the printing platform to the required layer thickness; S4. The forming module is started, the high viscosity slurry is evenly spread and transported to the top of the printing platform, the forming module performs light curing on the high viscosity slurry from line to surface, and the formed solidified body is bonded to the printing platform; S5. The station switching module drives the printing platform to move along the forming direction to achieve light curing of the entire layer of slurry; S6. After a layer of slurry is photocured, 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 S3-S7 until the photocuring forming is completed.

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