Liquid level flattening device for laser 3D printer

Abstract

The invention provides a liquid level flattening device for a laser 3D printer. The liquid level flattening device comprises a 3D printer body, a forming platform, a resin tank, a sinking containing part, an in-out mechanism, a turning mechanism and a scraping and shaking part. The forming platform and the resin groove are both arranged in the 3D printer body, the forming platform is located behind the resin groove and is aligned with the resin groove, the sinking containing part is arranged on the 3D printer body, the in-out mechanism is arranged on the sinking containing part, the turning mechanism is arranged on the in-out mechanism, and the forming platform and the resin groove are arranged in the 3D printer body. The liquid level flattening device for the laser 3D printer is high in flexibility and does not occupy the space in the resin tank for a long time, so that it is guaranteed that the influence on the printing process is avoided, and meanwhile the quality of printed products in all aspects can be integrally improved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a liquid leveling device for a laser 3D printer. Background Art

[0002] 3D printing technology is a manufacturing technology that uses digital model files to transform materials from liquid or solid to solid by stacking them layer by layer. 3D printing technology can achieve rapid prototyping of complex structures and shapes, and has the advantages of high efficiency, economy, and environmental protection. 3D printing technology can be divided into many types according to different molding principles and material types, such as fused deposition modeling (FDM), selective laser sintering (SLS), powder bed inkjet printing (BJ), stereolithography (SLA), etc.

[0003] Among them, Stereolithography (SLA) is a technology that uses liquid photosensitive resin as the main raw material, controls laser scanning through a computer, solidifies the resin surface, and then achieves 3D printing by stacking layer by layer. SLA technology has been widely used due to its high degree of automation in the molding process, good surface quality of the prototype, high dimensional accuracy, and the ability to achieve relatively fine dimensional molding.

[0004] In the process of photocuring, in order to ensure the quality of the printed product, the model file will be layered to make the thickness of each layer consistent, which is conducive to the fusion of subsequent layers. However, in the actual printing process, due to the high viscosity of photosensitive resin, it is difficult for the liquid surface to quickly level in a short time after each layer is cured, which will cause the resin to not be applied to the previous layer in a uniform state, thus seriously affecting the accuracy of the entity; in addition, since photosensitive resin is a colloidal substance composed of high molecules, there will be some heavy particles that are easy to settle. Therefore, it is very easy to precipitate or stratify due to its own sedimentation effect during the printing process, affecting the printing effect. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid leveling device for a laser 3D printer to solve the above problems.

[0006] In order to achieve the above-mentioned object, the present invention provides a liquid leveling device for a laser 3D printer, comprising: a 3D printer body, a molding platform, a resin tank, a sinking accommodating portion, an in-and-out mechanism, a turning mechanism, and a scraping, cutting, shaking, and stirring portion; The molding platform and the resin tank are both arranged in the body of the 3D printer, and the molding platform is located behind the resin tank and aligned with the resin tank, the sinking accommodation portion is arranged on the body of the 3D printer, the entry and exit mechanism is arranged on the sinking accommodation portion, the switching mechanism is arranged on the entry and exit mechanism, and the scraping, cutting, shaking and stirring portion is arranged on the switching mechanism, wherein Driving the entry and exit mechanism can move the turning mechanism and the scraping, cutting, rocking and stirring part in multiple dimensions, so as to accurately deliver the scraping, cutting, rocking and stirring part into the resin tank; The switching mechanism is suitable for rotating the scraping, cutting, shaking and stirring part to change the direction of the scraping, cutting, shaking and stirring part; The scraping, shaking and stirring part is suitable for moving along the horizontal surface or the inside of the external photosensitive resin in the resin tank to scrape the surface or stir the inside of the external photosensitive resin in the resin tank; The sinking accommodating portion comprises a sinking groove and an externally connected concave container; The sinking groove is formed on the 3D printer body and is located at one side of the resin tank. The external concave container is connected to the 3D printer body and is aligned with the sinking groove.

[0007] Furthermore, the scraping, shaking and stirring part includes a shaft sleeve, a right half plate, a first spring, a first main body plate, a scraping strip, a side connecting plate, a first electric push rod, an elbow transmission rod, a circular iron plate, a first bottom pier and a first electromagnet; The shaft sleeve is installed on the switching mechanism, the right half plate is installed on one side of the shaft sleeve, one end of a plurality of the first springs are installed on the right half plate in a colinear manner, the first main body plate is connected to the other ends of the plurality of the first springs, the two scrapers are respectively installed on the front and back sides of the first main body plate, and the two scrapers are both at the bottom end of the first main body plate, the side connecting plate is connected to the switching mechanism, the first electric push rod is arranged on the side connecting plate, the first bottom pier is installed on the top of the first main body plate, the first electromagnet is arranged on the first bottom pier, one end of the elbow transmission rod is connected to the output shaft of the first electric push rod, and the other end of the elbow transmission rod is connected to the circular iron plate; The circular iron plate is in contact with the first electromagnet.

[0008] Furthermore, the scraping, shaking and stirring part also includes a left half plate, a second spring, a second main body plate, a rotating plate, a bearing, a core shaft, blades, a second bottom pier and a second electromagnet; The left half plate is mounted on the other side of the sleeve, one end of a plurality of the second springs is colinearly mounted on the left half plate, the second main body plate is connected to the other ends of the plurality of the second springs, the rotating plate is vertically connected to the second main body plate, the bearing is arranged on the rotating plate, the mandrel is mounted on the bearing, a plurality of the blades are circumferentially mounted on the lower end of the mandrel, the second bottom pier is mounted on the top of the second main body plate, and the second electromagnet is arranged on the second bottom pier; The first electromagnet and the second electromagnet are located at a set of opposite points.

[0009] Further, the switching mechanism includes an overhanging load plate, a positioning frame and a motor; The overhanging load plate is connected to the access mechanism, the positioning frame is arranged on the overhanging load plate, the motor is invertedly mounted on the positioning frame, and the output shaft of the motor passes through the overhanging load plate and extends downward; The bushing is mounted on the output shaft of the motor and is located below the overhanging load plate; The side connecting plates are connected to the side surfaces of the overhanging load plates.

[0010] Furthermore, the entry and exit mechanism includes a linear module, a bearing platform, a central vertical plate, a curved head positioning plate, a long base block, a joint plate, a reinforcement angle plate, a through groove, a connector and a second electric push rod; The linear module is arranged in the sinking groove and the externally connected lower concave body, the bearing platform is installed on the linear module, the central vertical plate is installed on the bearing platform, the curved head positioning plate is connected to the top of the central vertical plate, the long strip base block is arranged on the central vertical plate, the embracing plate is slidably installed on the long strip base block, the reinforcing angle plate is installed on the embracing plate, the through groove passes through the central vertical plate and the long strip base block in sequence, one end of the connecting piece passes through the through groove and is connected to the embracing plate, and the second electric push rod is invertedly installed on the curved head positioning plate; The output shaft of the second electric push rod is connected to the other end of the connecting member; The overhanging load plate is connected to the reinforcing angle plate.

[0011] Furthermore, the scraping, cutting and stirring part also includes side guide pieces installed on the front and rear sides of the first main body plate.

[0012] Furthermore, the scraping, shaking and stirring part further comprises two groups of inner cylinders respectively inserted into the right half plate and the left half plate, and the two groups of inner cylinders are respectively close to the first main body plate and the second main body plate; A plurality of the first springs and a plurality of the second springs are respectively sleeved on the two groups of the inner cylinders.

[0013] Furthermore, the connecting piece includes a direct piece and a main rod body; The two direct members are connected to the clasping plate in a clamp shape, and the two direct members are collectively connected to the main rod body; The main rod body is connected to the output shaft of the second electric push rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The liquid leveling device for the laser 3D printer can scrape and cut the surface of the remaining photosensitive resin in the resin tank through the scraping and shaking part after each layer is printed, so as to scrape and level the remaining photosensitive resin in the resin tank, prompting the liquid surface of the photosensitive resin to quickly level after each layer is cured, so that the photosensitive resin of each layer can be evenly distributed, ensuring the high degree of fusion between layers in subsequent printing, and ensuring the smoothness and flatness of the product surface; The liquid leveling device for the laser 3D printer can stir the photosensitive resin in the resin tank through the scraping and shaking part, causing the photosensitive resin to shake inside, thereby effectively preventing the occurrence of the self-sedimentation effect of the photosensitive resin by regular shaking, effectively avoiding the precipitation or stratification of the photosensitive resin in the resin tank, ensuring the uniform distribution of the color paste particle components in the photosensitive resin during printing, avoiding the situation of inconsistent colors, ensuring the uniform mixing of the internal components of the photosensitive resin during the whole printing process, and ensuring consistent product quality; The liquid leveling device for the laser 3D printer can quickly and accurately deliver the scraping, cutting, shaking and stirring part into the resin tank after each layer is solidified through the entry and exit mechanism, thereby ensuring efficiency while keeping the scraping, cutting, shaking and stirring part away from the resin tank, thereby effectively preventing the printing of the product from being affected and improving reliability; The liquid leveling device for the laser 3D printer is highly flexible and does not occupy the space inside the resin tank for a long time, thereby ensuring that the printing process is not affected and at the same time being able to improve the overall quality of all aspects of the printed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 A perspective view of the present invention is shown; Figure 2 A first partial perspective view of the present invention is shown; Figure 3 A second partial perspective view of the present invention is shown; Figure 4 A partial stereogram of the present invention in another form is shown; Figure 5 A first partial stereoscopic view of the present invention at another angle is shown; Figure 6A second partial stereoscopic view of the present invention at another angle is shown; Figure 7 A partial bottom perspective view of the present invention at another angle is shown; Figure 8 The present invention is shown Figure 3 Enlarged view of point A.

[0017] In the figures, the same reference numerals denote the same structural elements, wherein: 1. 3D printer body; 2. Forming platform; 3. Resin tank; 4. Sinking accommodating part; 41. Sinking tank; 42. External concave container; 5. Inlet and outlet mechanism; 51. Linear module; 52. Carrying platform; 53. Center vertical plate; 54. Curved head positioning plate; 55. Long base block; 56. Clamping plate; 57. Reinforced angle plate; 58. Through slot; 59. Connecting piece; 5911. Direct piece; 592. Main rod body; 591. Second electric push rod; 6. Turning mechanism; 61. Outer extension load plate; 62. Positioning frame; 63. Motor; 7. Scraping, cutting and shaking 71. sleeve; 72. right half plate; 73. first spring; 74. first main plate; 75. scraper; 76. side plate; 77. first electric push rod; 78. elbow transmission rod; 79. round iron plate; 791. first bottom pier; 792. first electromagnet; 793. left half plate; 794. second spring; 795. second main plate; 796. rotating plate; 797. bearing; 798. mandrel; 799. blade; 7991. second bottom pier; 7992. second electromagnet; 7993. side guide; 7994. inner cylinder. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] See also Figure 1 , Figure 1 A perspective view of the present invention is shown; see Figure 2 , Figure 2 A first partial perspective view of the present invention is shown; see Figure 3 , Figure 3 A second partial perspective view of the present invention is shown; see Figure 4 , Figure 4 A partial stereogram of the present invention in another form is shown; see Figure 5 , Figure 5 Shows a first partial stereoscopic view of the present invention at another angle; see Figure 6 , Figure 6 A second partial stereoscopic view of the present invention at another angle is shown; see Figure 7 , Figure 7 A partial bottom-up stereogram of the present invention at another angle is shown; see Figure 8 , Figure 8 The present invention is shown Figure 3 A enlarged view of Figure 1-8 As shown, a liquid leveling device for a laser 3D printer comprises: a 3D printer body 1, a molding platform 2, a resin tank 3, a sinking accommodating portion 4, an in-and-out mechanism 5, a turning mechanism 6 and a scraping, cutting, shaking and stirring portion 7; The molding platform 2 and the resin tank 3 are both arranged in the 3D printer body 1, and the molding platform 2 is located behind the resin tank 3 and aligned with the resin tank 3, the sinking accommodating portion 4 is arranged on the 3D printer body 1, the entry and exit mechanism 5 is arranged on the sinking accommodating portion 4, the turning mechanism 6 is arranged on the entry and exit mechanism 5, and the scraping, cutting, shaking and stirring portion 7 is arranged on the turning mechanism 6, wherein Driving the in-and-out mechanism 5 can move the switching mechanism 6 and the scraping, cutting, rocking and stirring part 7 in multiple dimensions, so as to accurately deliver the scraping, cutting, rocking and stirring part 7 into the resin tank 3; The switching mechanism 6 is adapted to rotate the scraping, cutting, shaking and stirring portion 7 to change the direction of the scraping, cutting, shaking and stirring portion 7; The scraping and shaking part 7 is suitable for moving along the horizontal surface or the inside of the external photosensitive resin in the resin tank 3 to scrape the surface or stir the inside of the external photosensitive resin in the resin tank 3. The liquid leveling device for the laser 3D printer can scrape the surface of the remaining photosensitive resin in the resin tank 3 after each layer is printed through the scraping and shaking part 7, so as to scrape the remaining photosensitive resin in the resin tank 3 flat, and promote the liquid surface of the photosensitive resin to quickly level after each layer is cured, so that the photosensitive resin of each layer can be evenly distributed, ensuring the high degree of fusion between the layers in the subsequent printing, ensuring the smoothness and flatness of the product surface, and stirring the photosensitive resin in the resin tank 3 through the scraping and shaking part 7, so as to effectively prevent the photosensitive resin from shaking by regular shaking. The occurrence of the resin's own sedimentation effect effectively avoids the precipitation or stratification of the photosensitive resin in the resin tank 3, ensures the uniform distribution of the color paste particle components in the photosensitive resin during printing, avoids the situation of inconsistent colors, ensures the uniform mixing of the internal components of the photosensitive resin during the whole printing process, and ensures the consistency of product quality. Through the in-and-out mechanism 5, the scraping, cutting, shaking and stirring part 7 can be quickly and accurately sent into the resin tank 3 after each layer is solidified, so that the scraping, cutting, shaking and stirring part 7 is kept away from the resin tank 3 while ensuring efficiency, thereby effectively preventing the printing of the product from being affected and improving reliability. The liquid leveling device for the laser 3D printer is highly flexible and does not occupy the space inside the resin tank 3 for a long time, thereby ensuring that the printing process is not affected, and at the same time, the overall quality of the printed product can be improved; The sinking receiving portion 4 includes a sinking groove 41 and an external concave container 42; The sinking groove 41 is opened on the 3D printer body 1 and is located on one side of the resin tank 3. The external concave container 42 is connected to the 3D printer body 1 and aligned with the sinking groove 41, providing a sunken installation space for the entry and exit mechanism 5, thereby reducing the height of the liquid level leveling device for the laser 3D printer relative to the resin tank 3 as a whole, thereby ensuring that the scraping and stirring part 7 can penetrate into the resin tank 3 to scrape and cut the surface of each layer of photosensitive resin until printing is completed or the photosensitive resin is exhausted.

[0020] Optionally, the scraping, shaking and stirring part 7 includes a sleeve 71, a right half plate 72, a first spring 73, a first main body plate 74, a scraping strip 75, a side connecting plate 76, a first electric push rod 77, an elbow transmission rod 78, a circular iron plate 79, a first bottom pier 791 and a first electromagnet 792; The shaft sleeve 71 is installed on the switching mechanism 6, the right half plate 72 is installed on one side of the shaft sleeve 71, one end of a plurality of the first springs 73 is installed on the right half plate 72 in a colinear manner, the first main plate 74 is connected to the other ends of the plurality of the first springs 73, the two scraper strips 75 are respectively installed on the front and back sides of the first main plate 74, and the two scraper strips 75 are both at the bottom end of the first main plate 74, the side connecting plate 76 is connected to the switching mechanism 6, the first electric push rod 77 is arranged on the side connecting plate 76, the first bottom pier 791 is installed on the top of the first main plate 74, the first electromagnet 792 is arranged on the first bottom pier 791, one end of the elbow transmission rod 78 is connected to the output shaft of the first electric push rod 77, and the other end of the elbow transmission rod 78 is connected to the circular iron plate 79; The circular iron plate 79 is in contact with the first electromagnet 792, ensuring that the energized first electromagnet 792 adsorbs the circular iron plate 79 on the end of the elbow transmission rod 78. After completing the curing printing of the previous layer and raising the molding platform 2, the entry and exit mechanism 5 is driven to gradually send the scraping, cutting and stirring part 7 into the resin tank 3 until the first main body plate 74 is close to the inner wall of the resin tank 3 and the two scraping strips 75 are flush with the horizontal surface of the photosensitive resin in the resin tank 3. Then, the first electric push rod 77 is driven to transmit the thrust to the first main body plate 74 through the elbow transmission rod 78, the circular iron plate 79 and the first electromagnet 792, so as to push the first main body plate 74 forward in the resin tank 3 and pull open the first springs 73 at the same time, so as to use the front scraping strip 75 to scrape the surface of the photosensitive resin for the first time. The photosensitive resin above the horizontal plane is taken away and filled into the position below the horizontal plane during the pushing process. After the scraper strip 75 moves from the inner wall of this side to the inner wall of the opposite side of the resin tank 3, the first electric push rod 77 is driven in the reverse direction to pull the first main body plate 74 back, so that the surface of the photosensitive resin is scraped again by the scraper strip 75 on the reverse side, ensuring that the photosensitive resin liquid level of the current layer to be printed is quickly leveled under this back and forth scraping, ensuring the uniform distribution of the photosensitive resin of the current layer to be printed, and then ensuring that after the molding platform 2 enters the resin tank 3, the photosensitive resin is evenly applied to the molding platform 2; in the process of the first electric push rod 77 pulling the first main body plate 74 back, a plurality of first springs 73 rebound synchronously to pull the first main body plate 74 back together, ensuring that the first main body plate 74 moves backward stably.

[0021] Optionally, the scraping, shaking and stirring part 7 further includes a left half plate 793, a second spring 794, a second main plate 795, a rotating plate 796, a bearing 797, a core shaft 798, a blade 799, a second bottom pier 7991 and a second electromagnet 7992; The left half plate 793 is mounted on the other side of the shaft sleeve 71, one end of a plurality of second springs 794 is colinearly mounted on the left half plate 793, the second main plate 795 is connected to the other ends of the plurality of second springs 794, the rotating plate 796 is vertically connected to the second main plate 795, the bearing 797 is disposed on the rotating plate 796, the mandrel 798 is mounted on the bearing 797, a plurality of blades 799 are circumferentially mounted on the lower end of the mandrel 798, the second bottom pier 7991 is mounted on the top of the second main plate 795, and the second electromagnet 7992 is disposed on the second bottom pier 7991; The first electromagnet 792 and the second electromagnet 7992 are located at a set of opposite vertices. After a period of continuous printing and the photosensitive resin in the resin tank 3 is stationary for a period of time, the power supply of the first electromagnet 792 is disconnected so that it no longer adsorbs the circular iron plate 79, causing the two to separate. Then, the switching mechanism 6 is driven to rotate the shaft sleeve 71 to reverse the direction of the right half plate 72 and the left half plate 793 until the first main plate 74 and the second main plate 795 are swapped. At this time, the second electromagnet 7992 is attached to the circular iron plate 79. Then, the second electromagnet 7992 is energized to adsorb the circular iron plate 79, and the connection between the first electric push rod 77 and the second main plate 795 is established. Then, the scraping, cutting, shaking and stirring part 7 is sent into the resin tank 3 through the entry and exit mechanism 5, so that part of the core shaft 798 and several blades 79 9 is completely immersed in the photosensitive resin, and then the first electric push rod 77 is driven to push the second main body plate 795 forward, driving a number of blades 799 to move forward inside the photosensitive resin. During the forward movement, the blades 799 are subjected to resistance from the viscous photosensitive resin and adaptively rotate on the core shaft 798 under the action of the bearing 797, thereby stirring the photosensitive resin inside, causing the photosensitive resin to shake, and then stirring up the particles with a tendency to settle inside the photosensitive resin, causing them to be evenly mixed with other floating particles, effectively avoiding the precipitation or stratification of the photosensitive resin in the resin tank 3, ensuring the uniform distribution of the color paste particle components in the photosensitive resin during printing, avoiding the occurrence of color inconsistency, and effectively preventing the occurrence of the photosensitive resin's own sedimentation effect by regular shaking; effectively improving the printing effect of the model in all aspects.

[0022] Optionally, the switching mechanism 6 includes an outwardly extending load plate 61, a positioning frame 62 and a motor 63; The overhanging load plate 61 is connected to the access mechanism 5, the positioning frame 62 is arranged on the overhanging load plate 61, the motor 63 is invertedly mounted on the positioning frame 62, and the output shaft of the motor 63 passes through the overhanging load plate 61 and extends downward; The bushing 71 is mounted on the output shaft of the motor 63 and is located below the overhanging load plate 61; The side connecting plate 76 is connected to the side of the extended load plate 61. Under normal circumstances, the first main plate 74 is located in the front to perform scraping and cutting work on the surface of the photosensitive resin after layer-by-layer curing. When the inside of the photosensitive resin needs to be shaken to prevent its own sedimentation effect, the driving motor 63 drives the shaft sleeve 71 until the first main plate 74 and the second main plate 795 are swapped, ensuring flexibility and ensuring that different operating modes of the scraping and shaking part 7 can be quickly selected according to specific circumstances.

[0023] Optionally, the entry and exit mechanism 5 includes a linear module 51, a bearing platform 52, a central vertical plate 53, a curved head positioning plate 54, a long base block 55, a clamping plate 56, a reinforcing angle plate 57, a through slot 58, a connecting piece 59 and a second electric push rod 591; The linear module 51 is arranged in the sinking groove 41 and the external concave body 42, the bearing platform 52 is installed on the linear module 51, the central vertical plate 53 is installed on the bearing platform 52, the curved head positioning plate 54 is connected to the top of the central vertical plate 53, the long strip base block 55 is arranged on the central vertical plate 53, the embracing plate 56 is slidably installed on the long strip base block 55, the reinforcing angle plate 57 is installed on the embracing plate 56, the through groove 58 passes through the central vertical plate 53 and the long strip base block 55 in sequence, one end of the connecting member 59 passes through the through groove 58 and is connected to the embracing plate 56, and the second electric push rod 591 is invertedly installed on the curved head positioning plate 54; The output shaft of the second electric push rod 591 is connected to the other end of the connecting member 59; The extended load plate 61 is connected to the reinforcement angle plate 57. Normally, the linear module 51 and the second electric push rod 591 are both in a reset state, so that the scraping, cutting and stirring part 7 is away from the resin tank 3. When the photosensitive resin liquid surface needs to be scraped or the inside of the photosensitive resin needs to be stirred after completing the single-layer curing printing, the linear module 51 is driven to move the carrier 52 forward in a straight line until the scraping, cutting and stirring part 7 is sent to a suitable position above the resin tank 3, and then the second electric push rod 591 is driven to push the holding plate 56 up and down along the through slot 58 on the long base block 55 through the connecting piece 59 until the two scraping strips 75 are aligned with each other. The horizontal surface of the photosensitive resin in the resin tank 3 is kept level or a number of blades 799 are immersed in the photosensitive resin, so that the scraping, cutting and stirring part 7 can be quickly delivered to the designated location when it is needed, thereby ensuring the overall printing efficiency while avoiding the influence of the scraping, cutting and stirring part 7 on the model printing; in addition, by lowering the two scraper bars 75 through the high-precision second electric push rod 591, it can be ensured that the two scraper bars 75 are lowered layer by layer as the printing progresses according to the pre-allocated thickness of each layer, so that they always follow the decline of the photosensitive resin liquid level to reach the horizontal surface of the photosensitive resin, thereby further ensuring the consistency of the thickness of the printed layer.

[0024] Optionally, the scraping and stirring part 7 also includes side guide pieces 7993 installed on the front and rear sides of the first main body plate 74. When the front scraper 75 scrapes the liquid surface of the photosensitive resin for the first time, the side guide pieces 7993 on both sides gradually lead the photosensitive resin pushed forward by the scraper 75 away from both sides to avoid the photosensitive resin from accumulating on the scraper 75, so as to prevent the scraping effect of the scraper 75 from being affected, thereby ensuring that the photosensitive resin liquid surface is quickly and successfully leveled.

[0025] Optionally, the scraping, shaking and stirring part 7 further includes two groups of inner cylinders 7994 respectively inserted into the right half plate 72 and the left half plate 793, and the two groups of inner cylinders 7994 are respectively close to the first main body plate 74 and the second main body plate 795; The first springs 73 and the second springs 794 are respectively mounted on the two groups of inner cylinders 7994 to shape the first springs 73 and the second springs 794, thereby preventing the first springs 73 and the second springs 794 from being unable to withstand the weight of the components connected thereto and causing them to deform and collapse, resulting in the scraping, cutting and stirring part 7 being unable to operate normally.

[0026] Optionally, the connecting member 59 includes a direct member 5911 and a main rod body 592; The two direct members 5911 are connected to the clasping plate 56 in a clamp shape, and the two direct members 5911 are collectively connected to the main rod body 592; The main rod body 592 is connected to the output shaft of the second electric push rod 591, and relies on two direct parts 5911 to transmit the thrust of the second electric push rod 591 to multiple points of the engaging plate 56 to ensure that the engaging plate 56 can move stably. At the same time, the two direct parts 5911 and the main rod body 592 are used to pull the engaging plate 56 and give it a backward pulling force to prevent the engaging plate 56 from being forced to separate from the long strip base block 55 due to long-term load scraping and stirring part 7, causing unexpected situations.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid leveling device for a laser 3D printer, characterized in that: include: A 3D printer body (1), a molding platform (2), a resin tank (3), a sinking accommodating portion (4), an entry and exit mechanism (5), a turning mechanism (6), and a scraping, cutting, shaking and stirring portion (7); The molding platform (2) and the resin tank (3) are both arranged in the 3D printer body (1), and the molding platform (2) is located behind the resin tank (3) and aligned with the resin tank (3), the sinking accommodating portion (4) is arranged on the 3D printer body (1), the entry and exit mechanism (5) is arranged on the sinking accommodating portion (4), the switching mechanism (6) is arranged on the entry and exit mechanism (5), and the scraping, cutting, shaking and stirring portion (7) is arranged on the switching mechanism (6), wherein The entry and exit mechanism (5) is driven to move the switching mechanism (6) and the scraping, cutting, shaking and stirring portion (7) in multiple dimensions, so as to accurately deliver the scraping, cutting, shaking and stirring portion (7) into the resin tank (3); The switching mechanism (6) is suitable for rotating the scraping, cutting, shaking and stirring portion (7) to change the direction of the scraping, cutting, shaking and stirring portion (7); The scraping, shaking and stirring portion (7) is suitable for moving along the horizontal surface or the interior of the external photosensitive resin in the resin tank (3) to scrape the surface or stir the interior of the external photosensitive resin in the resin tank (3); The sinking accommodating portion (4) comprises a sinking groove (41) and an externally connected concave container (42); The sinking groove (41) is opened on the 3D printer body (1) and is located on one side of the resin tank (3); the external concave container (42) is connected to the 3D printer body (1) and is aligned with the sinking groove (41).

2. A liquid leveling device for a laser 3D printer as claimed in claim 1, characterized in that: The scraping, shaking and stirring part (7) comprises a shaft sleeve (71), a right half plate (72), a first spring (73), a first main body plate (74), a scraping strip (75), a side connecting plate (76), a first electric push rod (77), an elbow transmission rod (78), a circular iron plate (79), a first bottom pier (791) and a first electromagnet (792); The shaft sleeve (71) is mounted on the switching mechanism (6), the right half plate (72) is mounted on one side of the shaft sleeve (71), one end of a plurality of the first springs (73) are mounted on the right half plate (72) in a colinear manner, the first main plate (74) is connected to the other ends of the plurality of the first springs (73), the two scraper strips (75) are mounted on the front and back sides of the first main plate (74), and the two scraper strips (75) are both located at the bottom end of the first main plate (74), the side connecting plate (76) is connected to the switching mechanism (6), the first electric push rod (77) is arranged on the side connecting plate (76), the first bottom pier (791) is mounted on the top of the first main plate (74), the first electromagnet (792) is arranged on the first bottom pier (791), one end of the elbow transmission rod (78) is connected to the output shaft of the first electric push rod (77), and the other end of the elbow transmission rod (78) is connected to the circular iron plate (79); The circular iron plate (79) is in contact with the first electromagnet (792).

3. A liquid leveling device for a laser 3D printer as claimed in claim 2, characterized in that: The scraping, shaking and stirring portion (7) further comprises a left half plate (793), a second spring (794), a second main body plate (795), a rotating plate (796), a bearing (797), a core shaft (798), blades (799), a second bottom pier (7991) and a second electromagnet (7992); The left half plate (793) is mounted on the other side of the shaft sleeve (71); one end of a plurality of second springs (794) is colinearly mounted on the left half plate (793); the second main plate (795) is connected to the other ends of the plurality of second springs (794); the rotating plate (796) is vertically connected to the second main plate (795); the bearing (797) is disposed on the rotating plate (796); the core shaft (798) is mounted on the bearing (797); a plurality of blades (799) are circumferentially mounted on the lower end of the core shaft (798); the second bottom pier (7991) is mounted on the top of the second main plate (795); and the second electromagnet (7992) is disposed on the second bottom pier (7991); The first electromagnet (792) and the second electromagnet (7992) are located at a set of opposite vertices.

4. A liquid leveling device for a laser 3D printer as claimed in claim 3, characterized in that: The switching mechanism (6) comprises an outwardly extending load plate (61), a positioning frame (62) and a motor (63); The overhanging load plate (61) is connected to the entry / exit mechanism (5), the positioning frame (62) is arranged on the overhanging load plate (61), the motor (63) is invertedly mounted on the positioning frame (62), and the output shaft of the motor (63) passes through the overhanging load plate (61) and extends downward; The shaft sleeve (71) is mounted on the output shaft of the motor (63) and is located below the overhanging load plate (61); The side connecting plate (76) is connected to the side surface of the overhanging load plate (61).

5. A liquid leveling device for a laser 3D printer as claimed in claim 4, characterized in that: The entry and exit mechanism (5) comprises a linear module (51), a bearing platform (52), a central vertical plate (53), a curved head positioning plate (54), a long base block (55), an embracing plate (56), a reinforcing angle plate (57), a through groove (58), a connecting piece (59) and a second electric push rod (591); The linear module (51) is arranged in the sinking groove (41) and the external concave body (42), the bearing platform (52) is installed on the linear module (51), the central vertical plate (53) is installed on the bearing platform (52), the curved head positioning plate (54) is connected to the top of the central vertical plate (53), the long strip base block (55) is arranged on the central vertical plate (53), the embracing plate (56) is slidably installed on the long strip base block (55), the reinforcing angle plate (57) is installed on the embracing plate (56), the through groove (58) passes through the central vertical plate (53) and the long strip base block (55) in sequence, one end of the connecting member (59) passes through the through groove (58) and is connected to the embracing plate (56), and the second electric push rod (591) is invertedly installed on the curved head positioning plate (54); The output shaft of the second electric push rod (591) is connected to the other end of the connecting member (59); The overhanging load plate (61) is connected to the reinforcing angle plate (57).

6. A liquid leveling device for a laser 3D printer as claimed in claim 5, characterized in that: The scraping, shaking and stirring portion (7) further comprises side guide pieces (7993) mounted on the front and rear sides of the first main body plate (74).

7. A liquid leveling device for a laser 3D printer as claimed in claim 6, characterized in that: The scraping, shaking and stirring portion (7) further comprises two groups of inner cylinders (7994) respectively inserted into the right half plate (72) and the left half plate (793), and the two groups of inner cylinders (7994) are respectively close to the first main body plate (74) and the second main body plate (795); A plurality of the first springs (73) and a plurality of the second springs (794) are respectively sleeved on the two groups of the inner cylinders (7994).

8. A liquid leveling device for a laser 3D printer as claimed in claim 7, characterized in that: The connecting member (59) comprises a direct member (5911) and a main rod body (592); The two direct parts (5911) are connected to the clasping plate (56) in a clamp shape, and the two direct parts (5911) are collectively connected to the main rod body (592); The main rod body (592) is connected to the output shaft of the second electric push rod (591).

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