Continuous scanning type three-dimensional printer
By designing the material preparation part and scraper device in a three-dimensional printer, the continuous supply of materials and the flatness of the printing area are achieved, the problems of fast consumption of printing materials and model separation from the platform are solved, and printing accuracy and stability are improved.
Patent Information
- Application Number
- CN202420777632.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-15
AI Technical Summary
When printing complex models, the existing three-dimensional printers consume faster printing materials, and the photosensitive resin is easily subjected to severe impact when poured into the working tank, affecting continuous printing, causing the model to detach from the molding platform.
A continuous scanning three-dimensional printer is designed, using a material preparation part including a material storage device and a scraper device. The printing material in the storage tank is driven by a motor to push the printing material to the working tank, and the scraper device is used to keep the printing material highly consistent to ensure that Continuous scan and print.
The continuous supply of materials and the flatness of printing areas are achieved, printing accuracy and stability are improved, and the problems of excessive material consumption and model separation from the platform are avoided.
Smart Images
Figure CN222201699U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of three-dimensional printers, in particular to a continuous scanning three-dimensional printer. Background Art
[0002] 3D printers are a rapid prototyping process that uses layer-by-layer stacking to create 3D models. The operation process is similar to that of traditional printers, except that traditional printers print ink on paper to form a two-dimensional plane drawing, while 3D printers stack liquid photosensitive resin materials, molten plastic filaments, gypsum powder and other materials layer by layer through spraying adhesives or extrusion to form a 3D entity.
[0003] The utility model adopts stereolithography. Stereolithography is the earliest practical rapid prototyping technology, which adopts liquid photosensitive resin as raw material. The process is that a three-dimensional solid model is first designed through CAD, the model is sliced by discrete program, and the scanning path is designed. The generated data will accurately control the movement of the laser scanner and the lifting platform; the laser beam is irradiated to the surface of the liquid photosensitive resin according to the designed scanning path through the scanner controlled by the numerical control device, so that a layer of resin in a specific area of the surface is solidified. When a layer is processed, a cross section of the part is generated; then the lifting platform is lowered by a certain distance, and another layer of liquid resin is covered on the solidified layer, and then the second layer is scanned, and the second solidified layer is firmly bonded to the previous solidified layer, so that layers are stacked to form a three-dimensional workpiece prototype. After the prototype is taken out of the resin, it is solidified, polished, and then electroplated, painted or colored to obtain the required product.
[0004] When printing complex models with photocuring 3D printing, the printing material is consumed quickly and it is necessary to continuously add printing material to ensure that printing is not interrupted. The existing 3D design printer feeding structure generally requires pouring photosensitive resin into the working tank. When pouring the photosensitive resin, it will produce a violent impact in the working tank, impacting the printed model, which can easily cause the model to fall off the molding platform and affect continuous printing. Utility Model Content
[0005] In view of this, the utility model provides a continuous scanning three-dimensional printer.
[0006] A continuous scanning three-dimensional printer comprises at least one base, at least one material preparation part arranged on the base, and at least one printing part arranged on the base. The base is provided with a working groove. The material preparation part comprises at least two material storage devices arranged on both sides of the working groove, at least one printing area arranged in the middle of the material storage device, and at least one scraper device arranged on both sides of the working groove perpendicular to the arrangement direction of the material storage device. The material storage device comprises at least one material storage trough arranged on one side of the working trough, at least one mounting frame arranged below the material storage trough, and at least one motor arranged on the mounting frame. The material storage trough comprises at least one material storage frame, and a feed plate arranged vertically on the material storage frame. The feed plate is located in the material storage frame and is sealed and attached to the inner side wall of the material storage frame. The mounting frame is fixedly arranged below the base. The motor is used to control the feed plate to move along the material storage frame toward the direction of the working groove, so that the feed plate pushes the printing material in the material storage trough to overflow into the working groove. The scraper device ensures that the height of the printed material after being scraped and pushed by the scraper is the same as the preset height of layered printing. The printing part is used to cooperate with the printing material located on the printing area to perform a photocuring reaction, thereby performing three-dimensional printing.
[0007] Furthermore, the storage device also includes a plurality of guide tubes sleeved on the mounting frame, the guide tubes are movably connected to the mounting frame, the guide tubes are connected to the feed plate, and as the feed plate moves, the guide tubes are symmetrically arranged relative to the motor.
[0008] Furthermore, the printing area includes at least one movable cylinder arranged in the working groove, a printing plate arranged in the movable cylinder, a second mounting frame arranged under the base, a second motor arranged on the second mounting frame, and a plurality of second guide tubes sleeved on the second mounting frame.
[0009] Furthermore, the movable cylinder is a cylindrical structure, and the second mounting frame is fixedly arranged below the base.
[0010] Furthermore, the second guide tube is movably connected to the second mounting frame, and the second guide tube is connected to the printing plate. As the printing plate moves, the second guide tube is symmetrically arranged relative to the second motor.
[0011] Furthermore, the scraper device includes at least two linear drive devices arranged outside the working groove and perpendicular to the arrangement direction of the storage device, and at least one scraper arranged vertically on the linear drive device. The length of the linear drive device is greater than the length of the working groove in the same direction, and the length of the scraper from the bottom surface of the working groove is the height of each layer of the model in layered printing.
[0012] Furthermore, at least one driving seat is movably provided on the linear driving device, the driving seat is connected to the scraper, and the driving seat is parallel to the bottom surface of the working groove.
[0013] Furthermore, the printing unit includes at least one three-axis moving device arranged on the base, an auxiliary device arranged on the three-axis moving device, and a laser device arranged on the three-axis moving device.
[0014] Furthermore, the three-axis moving device includes at least two first slide rails respectively arranged in parallel on both sides of the linear drive device, at least one first slide seat arranged on the first slide rails, at least one second slide rail arranged on the first slide seat, at least one second slide seat arranged on the second slide rail, and at least one cylinder arranged on the second slide seat, the first slide rail is arranged on the base at a height higher than the linear drive device, the first slide rail is used to control the second slide rail to move in a direction parallel to the movement of the scraper, the second slide rail is perpendicular to the first slide rail and the bottom surface of the working groove, the second slide rail is used to control the laser device to move in the direction in which the multiple linear drive devices are arranged, and the cylinder is perpendicular to the second slide rail, thereby controlling the laser device to move in a direction perpendicular to the bottom surface of the working groove.
[0015] Furthermore, the auxiliary device includes at least two first precision motors arranged on the side of the first slide rail away from the working groove, at least two first auxiliary seats respectively arranged on the first precision motors, at least two auxiliary rails arranged on the other side of the first precision motor facing the working groove, a second auxiliary seat arranged on the auxiliary rail and fixedly connected to the second slide rail, and at least one second precision motor arranged on the second slide rail.
[0016] Compared with the prior art, the utility model provides a continuous scanning 3D printer that realizes continuous scanning 3D printing by setting a material preparation part. The material preparation part is provided with a material storage device, so that the motor can push the feed plate on the material storage tank through the screw rod, thereby quickly pushing the printing material in the material storage tank to the working tank. The scraper device is provided with the linear drive device and the scraper, so that the scraper scrapes and pushes the printing material back and forth between the working tanks, providing the printing area with printing materials with a flat surface and equal height in the working tank. After printing, the second motor is driven to move the printing plate in the direction away from the working tank by the height of one layer of the model, providing space for the printing of the lower layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1The present invention is a schematic structural diagram of a continuous scanning three-dimensional printer provided by the utility model.
[0018] Figure 2 for Figure 1 A schematic structural diagram of a printing unit of a continuous scanning 3D printer.
[0019] Figure 3 for Figure 1 A structural schematic diagram of a material storage device of a continuous scanning 3D printer.
[0020] Figure 4 for Figure 1 A schematic diagram of the structure of a printing area of a continuous scanning 3D printer. DETAILED DESCRIPTION
[0021] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.
[0022] See also Figures 1 to 3 , which is a schematic diagram of the structure of a continuous scanning 3D printer provided by the utility model. The continuous scanning 3D printer includes at least one base 10, at least one material preparation unit 20 disposed on the base 10, and at least one printing unit 30 disposed on the base 10. It is conceivable that the continuous scanning 3D printer also includes some other functional modules, such as connectors, etc., which are well known to those skilled in the art and will not be described in detail here.
[0023] The base 10 is used to carry the above-mentioned functional modules, so the base 10 is provided with a variety of functional structures, such as screws, bolts, clamps, etc. to complete the installation and assembly of the above-mentioned functional modules, which can be set according to actual needs and are not described in detail here. The base 10 is provided with a working groove 11, and the shape of the working groove 11 is rectangular. The working groove 11 is arranged on the side of the base 10 where the printing part 30 is provided, and the working groove 11 is used to accommodate printing materials, supplementary materials and provide a place for continuous scanning and printing.
[0024] The material preparation section 20 includes at least two material storage devices 21 disposed oppositely on both sides of the working tank 11, at least one printing area 22 disposed in the middle of the material storage devices 21, and at least one scraper device 23 disposed on both sides of the working tank 11 perpendicular to the arrangement direction of the material storage devices 21. The material preparation section 20 is used to prepare printing materials required for three-dimensional printing on the printing area 22.
[0025] The material storage device 21 includes at least one material storage trough 211 disposed on one side of the working tank 11, a mounting frame 212 disposed below the material storage trough 211, a motor 213 disposed on the mounting frame 212, and a plurality of guide tubes 214 sleeved on the mounting frame 212. The material storage device 21 is used to store and provide the printing materials required for three-dimensional printing on the workbench. The material storage trough 211 is used to store printing materials and provide materials for three-dimensional printing. The material storage trough 211 includes a material storage frame 2111 and a feed plate 2112 disposed vertically on the material storage frame 2111. The feed plate 2112 is located in the material storage frame 2111 and is sealed and fitted with the inner side wall of the material storage frame 2111, so that the material storage frame 2111 and the feed plate 2112 form the material storage trough 211 on the side facing the working tank 11, ensuring that the raw materials will not leak out. The setting of the feed plate 2112 is related to the motor 213 described below, and will be specifically described in conjunction with the motor 213 described below. The mounting frame 212 is fixedly arranged below the base 10, and is used to support the guide tube 214 and the motor 213. The motor 213 applies a moving force to the feed plate 2112 through a tap. The motor 213 is used to control the feed plate 2112 to move along the material storage frame 2111 toward the direction of the working tank 11, so that the feed plate 2112 pushes the printing material in the material storage tank 211 to overflow into the working tank 11, providing three-dimensional printing raw materials. The guide tube 214 is movably connected to the mounting frame 212. The guide tube 214 is connected to the feed plate 2112, and moves with the feed plate 2112. The guide tube 214 is symmetrically arranged relative to the motor 213, so that the feed plate 2112 does not tilt when moving on the material storage frame 2111.
[0026] The printing area 22 is used for three-dimensional printing. The printing area 22 includes at least one moving cylinder 221 arranged in the working tank 11, a printing plate 222 arranged in the moving cylinder 221, a second mounting frame 223 arranged below the base 10, a second motor 224 arranged on the second mounting frame 223, and a plurality of second guide tubes 225 sleeved on the second mounting frame 223. The moving cylinder 221 is a cylindrical structure and is used to limit the moving direction of the printing plate 222, so that the printing plate 222 moves in a direction perpendicular to the bottom surface of the working tank 11. The second mounting frame 223 is fixedly arranged below the base 10, and is used to support the second guide tube 225 and the second motor 224. The second motor 224 applies a moving force to the printing plate 222. The second motor 224 is used to control the printing plate 222 to move along the moving cylinder 221 toward the direction of the second mounting frame 223, so that the printing plate 222 drops the height of one layer of the model for three-dimensional printing each time the continuous scanning three-dimensional printer prints a layer. The second guide tube 225 is movably connected to the second mounting frame 223. The second guide tube 225 is connected to the printing plate 222 and moves with the printing plate 222. The second guide tube 225 is symmetrically arranged relative to the second motor 224, so that the printing plate 222 maintains balance when moving on the moving cylinder 221, and avoids the printing plate 222 tilting and causing the position of the printed model to shift.
[0027] The scraper device 23 includes at least two linear drive devices 231 arranged outside the working tank 11 and perpendicular to the arrangement direction of the storage device 21 , and at least one scraper 232 arranged perpendicularly on the linear drive device 231 .
[0028] The linear drive device 231 is used to assist the scraper 232 in moving on the working tank 11. The length of the linear drive device 231 is greater than the length of the working tank 11 in the same direction, so that the scraper 232 can scrape the printing material back and forth on the entire working tank 11, so that the printing material on the working tank 11 is at the same height. At least one driving seat 2311 is movably provided on the linear drive device 231. The driving seat 2311 is connected to the scraper 232. The linear drive device 231 and the driving seat 2311 are parallel to the bottom surface of the working tank 11, so that the liquid level after the scraper 232 scrapes and pushes the printing material is at the same height on the working tank 11.
[0029] The length of the scraper 232 from the bottom of the working tank 11 is the height of each layer of the model in the layered printing. The scraper 232 is used to scrape and push the printing material to ensure that the height of the printing material after being scraped and pushed by the scraper 232 is the same as the preset height of the layered printing to ensure the printing accuracy. At the same time, the scraper 232 pushes the printing material from the storage device 21 on different sides to the printing area 22 to provide the printing area 22 with appropriate printing material. The structure of the scraper 232 should be the existing technology and will not be described in detail. The distance between the scraper 232 and the bottom of the working tank 11 determines the height of the printing material liquid level.
[0030] The printing unit 30 includes at least one three-axis moving device 31 disposed on the base 10, an auxiliary device 32 disposed on the three-axis moving device 31, and a laser device 33 disposed on the three-axis moving device 31. The printing unit 30 is used to cooperate with the printing material located on the printing area 22 to perform a photocuring reaction, thereby performing three-dimensional printing.
[0031] The three-axis moving device 31 is used to drive the laser device 33 to move in three axes, and assist the laser device 33 to move to print out the target model. The three-axis moving device 31 includes at least two first slide rails 311 respectively arranged in parallel on both sides of the linear drive device 231, at least one first slide seat 312 arranged on the first slide rail 311, at least one second slide rail 313 arranged on the first slide seat 312, at least one second slide seat 314 arranged on the second slide rail 313, and at least one cylinder 315 arranged on the second slide seat 314. The height of the first slide rail 311 arranged on the base 10 is higher than that of the linear drive device 231, and the first slide rail 311 is used to control the displacement of the second slide rail 313 in the direction parallel to the movement of the scraper 232. The second slide rail 313 is perpendicular to the first slide rail 311 and the bottom surface of the working tank 11, and the second slide rail 313 is used to control the laser device 33 to move in the direction in which the plurality of linear drive devices 231 are arranged. The cylinder 315 is perpendicular to the second slide rail 313 , so as to control the laser device 33 to move in a direction perpendicular to the bottom surface of the working tank 11 .
[0032] The auxiliary device 32 includes at least two first precision motors 321 disposed on the side of the first slide rail 311 away from the working slot 11, at least two first auxiliary seats 322 disposed on the first precision motor 321, at least two auxiliary rails 323 disposed on the other side of the first precision motor 321 facing the working slot 11, a second auxiliary seat 324 disposed on the auxiliary rail 323 and fixedly connected to the second slide rail 313, and at least one second precision motor 325 disposed on the second slide rail 313. The first precision motor 321 is parallel to the first slide rail 311, and the two first auxiliary seats 322 clamp the second slide rail 313 on the first precision motor 321 to slide. In this embodiment, the first precision motor 321 and the second precision motor 325 adopt 250nm positioning precision motors to control the error generated by the laser device 33 during displacement; the auxiliary rail 323 is parallel to the first precision motor 321, and the second auxiliary seat 324 and the second slide rail 313 are fixedly arranged to slide along the auxiliary rail 323 to maintain the sliding accuracy of the second slide rail 313 on the first slide rail 311, and the second precision motor 321 is arranged on the second slide rail 313 to calibrate the movement accuracy of the second slide seat 314 on the second slide rail 313.
[0033] The laser device 33 adjusts its position through the three-axis moving device 31 and performs a photocuring reaction with the printing material located on the printing area 22, thereby performing three-dimensional printing. The laser device 33 is a prior art and will not be described in detail.
[0034] During operation, printing material is added to the material storage tank 211. The lead screw of the motor 213 pushes the feed plate 2112, so that the feed plate 2112, under the balancing action of the guide tube 225, pushes an appropriate amount of printing material to the working tank 11 along the material storage frame 2111 toward the side where the working tank 11 is located. The scraper 232 is arranged on the side of the working tank 11 close to the material storage tank 211 where the printing material overflows, and pushes the printing material to the other side of the working tank 11 along the linear drive device 231, so that the height of the printing material is equal to the height of each layer of the model. The laser device 33 moves to the printing area 22 through the three-axis moving device 31 and prints a three-dimensional model. The auxiliary device 32 calibrates the movement of the laser device 33 to avoid errors. The printing plate 222 moves the height of one layer of the model along the moving cylinder 221 away from the working tank 11 under the balance of the second guide tube 225. The motor 213 runs to push the feed plate 2112 to push the printing material in the material storage frame 2111 to the working slot 11 for replenishment, and the scraper 232 scrapes and pushes the printing material flat to the entire working slot 11 again, and this is repeated until printing is completed.
[0035] Compared with the prior art, the utility model provides a continuous scanning 3D printer to achieve continuous scanning 3D printing by setting a material preparation part 20. The material preparation part 20 is provided with a storage device 21, so that the motor 213 can push the feed plate 2112 on the storage tank 211 through the screw rod, so as to quickly push the printing material in the storage tank 211 to the working tank 11. The scraper device 23 is provided with the linear drive device 231 and the scraper 232, so that the scraper 232 scrapes and pushes the printing material back and forth between the working tank 11, and provides the printing area 22 with printing materials with a flat surface and equal height in the working tank 11. After printing, the second motor 224 is driven to move the printing plate 222 in the direction away from the working tank 11 by the height of one layer of the model, so as to provide space for the printing of the lower layer.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.
Claims
1. A continuous scanning 3D printer, characterized in that: The continuous scanning 3D printer includes at least one base, at least one material preparation part arranged on the base, and at least one printing part arranged on the base, the base is provided with a working groove, the material preparation part includes at least two material storage devices arranged on both sides of the working groove, at least one printing area arranged in the middle of the material storage device, and at least one scraper device arranged on both sides of the working groove perpendicular to the arrangement direction of the material storage device, the material storage device includes at least one material storage trough arranged on one side of the working groove, at least one mounting frame arranged below the material storage trough, and at least one motor arranged on the mounting frame, The material storage trough includes at least one material storage frame, and a feed plate vertically movably arranged on the material storage frame, the feed plate is located in the material storage frame and is sealed and fitted with the inner wall of the material storage frame, the mounting frame is fixedly arranged under the base, the motor is used to control the feed plate to move along the material storage frame toward the direction of the working trough, so that the feed plate pushes the printing material in the material storage trough to overflow into the working trough, the scraper device ensures that the height of the printing material after being scraped and pushed by the scraper is the same as the preset layered printing height, and the printing part is used to cooperate with the printing material located in the printing area to perform a photocuring reaction, thereby performing three-dimensional printing.
2. The continuous scanning 3D printer according to claim 1, wherein: The material storage device also includes a plurality of guide tubes sleeved on the mounting frame, wherein the guide tubes are movably connected to the mounting frame and connected to the feed plate. As the feed plate moves, the guide tubes are symmetrically arranged relative to the motor.
3. The continuous scanning 3D printer according to claim 1, wherein: The printing area includes at least one moving cylinder arranged in the working groove, a printing plate arranged in the moving cylinder, a second mounting frame arranged below the base, a second motor arranged on the second mounting frame, and a plurality of second guide tubes sleeved on the second mounting frame.
4. The continuous scanning 3D printer as claimed in claim 3, characterized in that: The movable cylinder is in a cylindrical structure, and the second mounting frame is fixedly arranged below the base.
5. The continuous scanning 3D printer as claimed in claim 3, characterized in that: The second guide tube is movably connected to the second mounting frame, and the second guide tube is connected to the printing plate. As the printing plate moves, the second guide tube is symmetrically arranged relative to the second motor.
6. The continuous scanning 3D printer according to claim 1, wherein: The scraper device includes at least two linear drive devices arranged outside the working groove and perpendicular to the arrangement direction of the storage device, and at least one scraper arranged vertically on the linear drive device. The length of the linear drive device is greater than the length of the working groove in the same direction, and the length of the scraper from the bottom surface of the working groove is the height of each layer of the model in layered printing.
7. The continuous scanning 3D printer according to claim 6, wherein: At least one driving seat is movably arranged on the linear driving device, the driving seat is connected to the scraper, and the driving seat is parallel to the bottom surface of the working groove.
8. The continuous scanning 3D printer according to claim 6, wherein: The printing unit comprises at least one three-axis moving device arranged on the base, an auxiliary device arranged on the three-axis moving device, and a laser device arranged on the three-axis moving device.
9. The continuous scanning 3D printer according to claim 8, characterized in that: The three-axis moving device includes at least two first slide rails respectively arranged in parallel on both sides of the linear drive device, at least one first slide seat arranged on the first slide rail, at least one second slide rail arranged on the first slide seat, at least one second slide seat arranged on the second slide rail, and at least one cylinder arranged on the second slide seat. The first slide rail is arranged on the base at a height higher than the linear drive device. The first slide rail is used to control the second slide rail to move in a direction parallel to the movement of the scraper. The second slide rail is perpendicular to the first slide rail and the bottom surface of the working groove. The second slide rail is used to control the laser device to move in the direction in which the multiple linear drive devices are arranged. The cylinder is perpendicular to the second slide rail, thereby controlling the laser device to move in a direction perpendicular to the bottom surface of the working groove.
10. The continuous scanning 3D printer according to claim 9, characterized in that: The auxiliary device includes at least two first precision motors arranged on the side of the first slide rail away from the working groove, at least two first auxiliary seats respectively arranged on the first precision motors, at least two auxiliary rails arranged on the other side of the first precision motor facing the working groove, a second auxiliary seat arranged on the auxiliary rail and fixedly connected to the second slide rail, and at least one second precision motor arranged on the second slide rail.