A sunken light-cured 3D printer

Abstract

This utility model relates to the field of 3D printer technology, specifically a recessed photopolymerization 3D printer, including a printing platform, which includes an operating platform with a groove. A feeding cylinder and a forming cylinder are fixedly connected to the bottom of the operating platform, and the inner cavities of the feeding cylinder and the forming cylinder communicate with the groove. An LED light source assembly is positioned above the operating platform for printing materials. A dual scraper assembly is positioned on the top surface of the operating platform to spread the raw material evenly. A conveying assembly is positioned on the top surface of the operating platform and is connected to the dual scraper assembly for horizontally moving the dual scraper assembly back and forth. A second motor on the front side drives a front threaded rod to rotate, which in turn drives a front movable frame to slide up and down. The movable frame drives the front material-carrying platform to slide up and down within the feeding cylinder, using a piston-like extrusion feeding method to precisely control the amount of raw material extruded. This design is convenient to operate and clean, avoiding material waste caused by cleaning the peristaltic pipes.

Description

Technical Field

[0001] This utility model relates to the field of 3D printer technology, specifically a sunken photopolymerization 3D printer. Background Technology

[0002] Submerged photopolymerization (DLP or LCD type) 3D printing technology relies on a precise material supply system to ensure the smooth progress of the printing process. Among them, the peristaltic pump, as a key component for liquid resin supply, achieves quantitative delivery of resin through periodic pipeline extrusion.

[0003] Traditional sink-type 3D printers have the following problems:

[0004] 1. Due to the inherent characteristics of its working principle, namely, the continuous compression and deformation of the hose during the material extraction process, the hose gradually exhibits fatigue as the processing time increases, which may eventually lead to rupture.

[0005] 2. The resin layer is laid using a unidirectional scraper design. Each reciprocating motion completes only one laying operation, that is, moving from one side to the other to lay one layer of material. After the current layer is cured by the laser or light source, the scraper needs to return to the origin to prepare for the laying of the next layer of material. This process inevitably causes a waste of time. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a recessed photopolymerization 3D printer to solve the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a recessed photopolymerization 3D printer, comprising:

[0010] A printing platform includes an operating platform with a groove. A feeding cylinder and a forming cylinder are fixedly connected to the bottom of the operating platform, and the inner cavities of the feeding cylinder and the forming cylinder are connected to the groove.

[0011] The LED light source assembly is located above the operating platform and is used for printing materials.

[0012] The dual scraper assembly is installed on the top surface of the operating platform to spread the raw materials evenly;

[0013] A conveying component is installed on the top surface of the operating platform and is connected to the dual scraper assembly for moving the dual scraper assembly back and forth horizontally.

[0014] Two piston assemblies are respectively installed in the feeding cylinder and the forming cylinder, which are used to push the raw materials and collect the finished products after processing.

[0015] Preferably, the top surface of the operating platform is symmetrically fixedly connected to two fixing rods, and the left and right ends of a fixing plate are fixedly connected to the rear sidewalls of the two fixing rods near the top. An LED light source assembly is fixedly connected to the front sidewall of the fixing plate, and the LED light source assembly is located directly above the forming cylinder.

[0016] Preferably, the conveying assembly includes a rotating rod, four conveying wheels, and two conveyor belts. The left and right ends of the rotating rod are rotatably connected to the rear side of the top surface of the operating platform via connectors. The four conveying wheels are located at the four corners of the groove on the top surface of the operating platform, and the two rear conveying wheels are fixedly connected to the left and right ends of the rotating rod, respectively. The two front conveying wheels are symmetrically fixed to the front side of the top surface of the operating platform via connectors, and the two left and right conveying wheels are rotatably connected via two conveyor belts. A first motor is fixedly connected to the top surface of the operating platform, and the output end of the first motor is fixedly connected to the right end of the rotating rod.

[0017] Preferably, the dual scraper assembly includes a movable frame, with its left and right ends fixedly connected to two conveyor belts respectively. Two limiting rods are symmetrically fixedly connected to the top surface of the operating platform, and the lower left and lower right ends of the movable frame are slidably connected to the two limiting rods respectively. Lifting electric push rods and two telescopic rods are fixedly connected to the middle of the front and rear side walls of the movable frame respectively. Two fixed blade holders are fixedly connected to the lower ends of the two lifting electric push rods respectively, and the left and right sides of the top surfaces of the two fixed blade holders are fixedly connected to the lower ends of four telescopic rods respectively. Two scraper blades are fixedly connected to the bottom of the two fixed blade holders respectively.

[0018] Preferably, the bottom of the feeding cylinder and the forming cylinder are respectively fixedly connected to a fixing frame, and the bottom of the two fixing frames are respectively fixedly connected to a second motor.

[0019] Preferably, the piston assembly includes threaded rods, a movable frame, and a loading platform. The upper ends of the two threaded rods are rotatably connected to the bottom of the feeding cylinder and the forming cylinder, respectively, and the lower ends of the two threaded rods are rotatably connected to the bottom of the two fixed frames, respectively. The threaded rods are threadedly connected to the bottom of the movable frame, and the loading platform is fixedly connected to the top of the movable frame. Two sets of connecting rods on the two movable frames are slidably connected to the bottom of the feeding cylinder and the forming cylinder, respectively, and the two loading platforms slide up and down inside the feeding cylinder and the forming cylinder, respectively. The lower ends of the two threaded rods are fixedly connected to the output ends of the two second motors, respectively.

[0020] Beneficial effects

[0021] Compared with the prior art, this utility model provides a recessed photopolymerization 3D printer, which has the following beneficial effects:

[0022] 1. This utility model uses a second motor on the front side to drive the front threaded rod to rotate, which in turn drives the front movable frame to slide up and down. The movable frame drives the front material loading platform to slide up and down in the feeding cylinder. It uses a piston method to extrude and feed materials, which can accurately control the amount of raw material extruded. It is also convenient to operate and clean, and can avoid the material waste caused by cleaning the peristaltic pipe.

[0023] 2. In this utility model, two lifting electric push rods drive two fixed blade holders and two scraper blades to move independently up and down, so that the bottom of the two scraper blades are independently embedded in the groove. Then, the first motor drives the two scraper blades to move back and forth on the operating platform, so as to realize the back-and-forth spreading and scraping of the raw material, thereby improving the efficiency of spreading. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the printing platform of this utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the dual scraper assembly of this utility model;

[0028] Figure 4 This is a three-dimensional structural schematic diagram of the piston assembly of this utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the transmission component of this utility model.

[0030] Legend:

[0031] 1. Printing platform; 101. Operating platform; 102. Groove; 103. Feeding cylinder; 104. Forming cylinder; 105. Limiting rod; 2. Fixing rod; 3. Fixing plate; 4. LED light source assembly; 5. Conveying assembly; 501. Rotating rod; 502. Conveying wheel; 503. Conveyor belt; 6. First motor; 7. Double scraper assembly; 701. Movable frame; 702. Lifting electric push rod; 703. Telescopic rod; 704. Fixed blade holder; 705. Scraper blade; 8. Fixing frame; 9. Piston assembly; 901. Threaded rod; 902. Movable frame; 903. Material loading platform; 10. Second motor. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] Specific implementation examples are given below.

[0034] Example

[0035] Please see Figure 1 and Figure 2 This utility model provides a recessed photopolymerization 3D printer, comprising:

[0036] Printing platform 1 includes an operating platform 101, on which a groove 102 is provided. A feeding cylinder 103 and a forming cylinder 104 are fixedly connected to the bottom of the operating platform 101, and the inner cavities of the feeding cylinder 103 and the forming cylinder 104 are connected to the groove 102.

[0037] LED light source assembly 4 is positioned above the operating platform 101 and is used for printing materials.

[0038] The double scraper assembly 7 is installed on the top surface of the operating platform 101 to spread the raw materials flat;

[0039] The conveying component 5 is disposed on the top surface of the operating platform 101 and is connected to the double scraper assembly 7, and is used to move the double scraper assembly 7 back and forth horizontally.

[0040] Two piston assemblies 9 are respectively installed in the feeding cylinder 103 and the forming cylinder 104, and are used to push raw materials and collect finished products after processing, respectively.

[0041] The top surface of the operating platform 101 is symmetrically connected to two fixing rods 2, and the left and right ends of the fixing plate 3 are fixedly connected to the rear side wall of the two fixing rods 2 near the top. The front side wall of the fixing plate 3 is fixedly connected to an LED light source assembly 4, and the LED light source assembly 4 is located directly above the forming cylinder 104.

[0042] Specifically, the LED light source assembly 4 prints the raw material laid flat in the groove 102.

[0043] like Figure 1 , Figure 2 and Figure 5As shown, the conveying assembly 5 includes a rotating rod 501, four conveying wheels 502, and two conveyor belts 503. The left and right ends of the rotating rod 501 are rotatably connected to the rear side of the top surface of the operating platform 101 through connectors. The four conveying wheels 502 are located at the four corners of the groove 102 on the top surface of the operating platform 101, and the two rear conveying wheels 502 are fixedly connected to the left and right ends of the rotating rod 501, respectively. The two front conveying wheels 502 are symmetrically fixed to the front side of the top surface of the operating platform 101 through connectors. The two left and right conveying wheels 502 are rotatably connected through two conveyor belts 503, respectively. A first motor 6 is fixedly connected to the top surface of the operating platform 101, and the output end of the first motor 6 is fixedly connected to the right end of the rotating rod 501.

[0044] Specifically, the first motor 6 drives the rotating rod 501 to rotate, which in turn drives the four conveyor wheels 502 to rotate. The four conveyor wheels 502 drive the two conveyor belts 503 to rotate, which in turn drives the double scraper assembly 7 to move back and forth on the operating platform 101.

[0045] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the dual scraper assembly 7 includes a movable frame 701, and the left and right ends of the movable frame 701 are fixedly connected to two conveyor belts 503 respectively. The top surface of the operating platform 101 is symmetrically fixedly connected to two limiting rods 105, and the lower left and lower right ends of the movable frame 701 are slidably connected to the two limiting rods 105 respectively. The front side wall and the rear side wall of the movable frame 701 are fixedly connected to a lifting electric push rod 702 and two telescopic rods 703 respectively. The lower ends of the two lifting electric push rods 702 are fixedly connected to two fixed blade holders 704 respectively, and the left and right sides of the top surface of the two fixed blade holders 704 are fixedly connected to the lower ends of four telescopic rods 703 respectively. The bottom of the two fixed blade holders 704 are fixedly connected to two scraper blades 705 respectively.

[0046] Specifically, the two lifting electric push rods 702 drive the two fixed blade holders 704 and the two scraper blades 705 to move up and down independently, so that the bottom of the two scraper blades 705 can be independently embedded in the groove 102, thereby realizing the back-and-forth spreading and scraping of the raw material and improving the efficiency of spreading.

[0047] like Figure 1 As shown, the bottom of the feeding cylinder 103 and the forming cylinder 104 are respectively fixedly connected to the fixing frame 8, and the bottom of the two fixing frames 8 are respectively fixedly connected to the second motor 10.

[0048] Specifically, the two fixing brackets 8 fix the two second motors 10 below the feeding cylinder 103 and the forming cylinder 104, respectively.

[0049] like Figure 1 , Figure 2 and Figure 4 As shown, the piston assembly 9 includes threaded rods 901, movable frames 902, and a loading platform 903. The upper ends of the two threaded rods 901 are rotatably connected to the bottom of the feeding cylinder 103 and the forming cylinder 104, respectively, and the lower ends of the two threaded rods 901 are rotatably connected to the bottom of the two fixed frames 8, respectively. The threaded rods 901 are threadedly connected to the bottom of the movable frame 902, and the loading platform 903 is fixedly connected to the top of the movable frame 902. The two sets of connecting rods on the two movable frames 902 are slidably connected to the bottom of the feeding cylinder 103 and the forming cylinder 104, respectively, and the two loading platforms 903 slide up and down inside the feeding cylinder 103 and the forming cylinder 104, respectively. The lower ends of the two threaded rods 901 are fixedly connected to the output ends of the two second motors 10, respectively.

[0050] Specifically, the second motor 10 on the front side drives the threaded rod 901 on the front side to rotate, which in turn drives the movable frame 902 on the front side to slide up and down. The movable frame 902 drives the material loading platform 903 on the front side to slide up and down in the feeding cylinder 103, and the material is fed by extrusion in a piston manner to precisely control the amount of raw material extruded.

[0051] Working principle: When using this recessed photopolymer 3D printer, firstly, the second front motor 10 is started. The second front motor 10 drives the front threaded rod 901 to rotate, which in turn drives the front movable frame 902 to slide upward. The movable frame 902 drives the front material loading platform 903 to slide upward within the feeding cylinder 103, extruding material using a piston method. Next, the front lifting electric push rod 702 drives the front fixed blade holder 704 and scraper blade 705 to move downward, so that the lower end of the front scraper blade 705 is embedded in the groove 102. Then, the first motor 6 is started. The first motor 6 drives the rotating rod 501 to rotate, which in turn drives the four conveyor wheels 502 to rotate. The four conveyor wheels 502 drive the two conveyor belts 503. The rotation causes the scraper blade 705 to move backward on the operating platform 101. Then, the front scraper blade 705 is raised and the rear scraper blade 705 is lowered. The first motor 6 is rotated in the opposite direction, causing the scraper blade 705 to move forward. This achieves the reciprocating motion of the two scraper blades 705, which efficiently spreads the raw material. The spread material is then processed by the LED light source assembly 4. Then, the rear second motor 10 is started, which drives the rear threaded rod 901 to rotate, thereby causing the rear movable frame 902 to slide downward. The movable frame 902 causes the front loading platform 903 to slide downward in the forming cylinder 104, collecting the printed material into the forming cylinder 104.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A recessed photopolymerization 3D printer, characterized in that, include: The printing platform (1) includes an operating platform (101), on which a groove (102) is provided. A feeding cylinder (103) and a forming cylinder (104) are fixedly connected to the bottom of the operating platform (101), and the inner cavities of the feeding cylinder (103) and the forming cylinder (104) are connected to the groove (102). LED light source assembly (4), which is set above the operating platform (101), is used for printing materials; The double scraper assembly (7) is set on the top surface of the operating platform (101) to spread the raw materials flat; The conveying component (5) is set on the top surface of the operating platform (101) and is connected to the double scraper assembly (7) for moving the double scraper assembly (7) horizontally back and forth. Two piston assemblies (9) are respectively installed in the feeding cylinder (103) and the forming cylinder (104) for pushing raw materials and collecting finished products after processing.

2. The sunken photopolymer 3D printer according to claim 1, characterized in that, The top surface of the operating platform (101) is symmetrically connected to two fixed rods (2), and the left and right ends of the fixed plate (3) are fixedly connected to the rear side wall of the two fixed rods (2) near the top. The front side wall of the fixed plate (3) is fixedly connected to an LED light source assembly (4), and the LED light source assembly (4) is located directly above the forming cylinder (104).

3. A recessed photopolymerization 3D printer according to claim 1, characterized in that, The conveying assembly (5) includes a rotating rod (501), four conveying wheels (502) and two conveyor belts (503). The left and right ends of the rotating rod (501) are rotatably connected to the rear side of the top surface of the operating platform (101) through connectors. The four conveying wheels (502) are located at the four corners of the groove (102) on the top surface of the operating platform (101). The two rear conveying wheels (502) are fixedly connected to the left and right ends of the rotating rod (501) respectively. The two front conveying wheels (502) are symmetrically fixed to the front side of the top surface of the operating platform (101) through connectors. The two left and right conveying wheels (502) are rotatably connected through two conveyor belts (503). A first motor (6) is fixedly connected to the top surface of the operating platform (101), and the output end of the first motor (6) is fixedly connected to the right end of the rotating rod (501).

4. A recessed photopolymerization 3D printer according to claim 3, characterized in that, The dual scraper assembly (7) includes a movable frame (701), and the left and right ends of the movable frame (701) are fixedly connected to two conveyor belts (503) respectively. The top surface of the operating platform (101) is symmetrically fixedly connected to two limiting rods (105), and the lower left and lower right ends of the movable frame (701) are slidably connected to the two limiting rods (105) respectively. The front and rear side walls of the movable frame (701) are fixedly connected to lifting electric push rods (702) and two telescopic rods (703) respectively. The lower ends of the two lifting electric push rods (702) are fixedly connected to two fixed blade holders (704), and the left and right sides of the top surface of the two fixed blade holders (704) are fixedly connected to the lower ends of four telescopic rods (703) respectively. The bottom of the two fixed blade holders (704) are fixedly connected to two scraper blades (705).

5. A recessed photopolymerization 3D printer according to claim 1, characterized in that, The bottom of the feeding cylinder (103) and the forming cylinder (104) are respectively fixedly connected to a fixing frame (8), and the bottom of the two fixing frames (8) are respectively fixedly connected to a second motor (10).

6. A recessed photopolymerization 3D printer according to claim 5, characterized in that, The piston assembly (9) includes threaded rods (901), movable frames (902), and loading platforms (903). The upper ends of the two threaded rods (901) are rotatably connected to the bottom of the feeding cylinder (103) and the forming cylinder (104), respectively, and the lower ends of the two threaded rods (901) are rotatably connected to the bottom of the two fixed frames (8), respectively. The threaded rods (901) are threadedly connected to the bottom of the movable frame (902), and the loading platform (903) is fixedly connected to the top of the movable frame (902). The two sets of connecting rods on the two movable frames (902) are slidably connected to the bottom of the feeding cylinder (103) and the forming cylinder (104), respectively, and the two loading platforms (903) slide up and down in the feeding cylinder (103) and the forming cylinder (104), respectively. The lower ends of the two threaded rods (901) are fixedly connected to the output ends of the two second motors (10), respectively.

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