Photocuring 3D printer

Abstract

The utility model relates to the technical field of printers, and particularly discloses a photocuring 3D printer which comprises an alloy frame base, a light source system, a resin tank, a Z-axis lead screw transmission system, a forming platform and a control system, a projection opening is formed in the top face of the alloy frame base, and the light source system is installed in the alloy frame base through the projection opening; the light source system is installed on the alloy frame base, the resin groove is installed above the projection opening, the Z-axis lead screw transmission system is installed on the alloy frame base, the forming platform is installed at the movable end of the Z-axis lead screw transmission system and located in the resin groove, the control system is installed in the alloy frame base, and the light source system, the Z-axis lead screw transmission system and the forming platform are all electrically connected with the control system. The integral rigidity, durability and stability of the photocuring 3D printer are improved, the problem of abrasion of a belt and wheels caused by frequent movement is solved, and the printing precision of the photocuring 3D printer is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printer technical field, concretely relates to a light solidification 3D printer. BACKGROUND

[0002] The rapid development of 3D printing technology has revolutionized the production of products, especially in the field of pull-type light solidification 3D printing technology. This technology solidifies liquid materials by precisely controlling light sources to build three-dimensional solid products layer by layer. In this process, the printing platform is designed to be immersed in a tank filled with liquid resin. The light source penetrates the bottom of the tank and irradiates a specific area, causing the liquid resin in that area to solidify rapidly and accumulate layer by layer on the printing platform. As the printing progresses, the platform is gradually moved vertically, allowing the liquid material to solidify layer by layer and eventually stack to form a three-dimensional product.

[0003] The structure of the light solidification 3D printer generally includes a platform lifting mechanism, a forming platform, a resin tank, a display screen, a light source, etc. The light source forms a transmission area to be solidified at the bottom of the resin tank through the display screen. The liquid resin between the forming surface of the forming platform or the bottom of the solidified layer and the bottom of the resin tank is solidified in the transmission area. In the process of layer-by-layer forming three-dimensional objects, after each layer is solidified, the forming platform is lifted in the resin tank under the drive of the platform lifting mechanism, so that the solidified layer is separated from the bottom surface of the resin tank, and the height of the next layer of resin layer is left between the solidified layer and the bottom surface of the resin tank for pre-solidification forming, so as to fill the gap between the solidified layer and the bottom of the resin tank with liquid resin, preparing for the next layer of solidification.

[0004] However, the traditional light solidification 3D printer still has some limitations in design, such as the frame commonly made of plastic material, which is prone to deformation or loosening under the influence of long-term mechanical stress and environmental changes, thereby affecting the printing accuracy. In addition, the moving parts of many printers rely on a belt and pulley transmission system, and frequent movement can cause wear and tear of the belt and pulley, thereby reducing the overall printing accuracy.

[0005] Therefore, we propose a light solidification 3D printer to solve the above technical problems. INVENTION CONTENTS

[0006] In order to solve the technical problems existing in the above-mentioned prior art, the utility model proposes a light solidification 3D printer.

[0007] The technical solution adopted by the utility model is as follows:

[0008] The utility model provides a kind of light-cured 3D printer, including alloy frame base, light source system, resin tank, Z-axis screw drive system, forming platform and control system, the top surface of the alloy frame base is equipped with projection, the light source system is installed in alloy frame base inside by projection, resin tank is installed above projection, Z-axis screw drive system is installed on alloy frame base, forming platform is installed in the movable end of Z-axis screw drive system, and forming platform is located in resin tank, control system is installed in alloy frame base, the light source system, Z-axis screw drive system and forming platform are electrically connected with control system.

[0009] In further technical solutions, the Z-axis screw drive system includes a slide rail, a slide block, a movable rod, a screw rod, and a servo motor. The slide rail is vertically installed on one side of the top surface of the alloy frame base. The slide block is movably arranged on the slide rail. The movable rod is vertically connected to the slide block. The screw rod is arranged in parallel to the direction of the slide rail and penetrates through the movable rod. The screw rod is threadedly connected to the movable rod. The servo motor is installed in the alloy frame base. The screw rod is fixedly connected to the output shaft of the servo motor. The forming platform is installed at the front end of the movable rod.

[0010] In further technical solutions, the movable rod includes a movable seat and a connecting rod. The movable seat is connected to the slide block by bolts. The connecting rod is connected to the movable seat by bolts. The upper end of the forming platform is provided with a connecting seat. The connecting seat is sleeved on the front end of the connecting rod and is fixedly installed on the connecting rod by a tightening handle.

[0011] In further technical solutions, the control system includes a main control board, a control panel, and a data transmission interface. The main control board is arranged in the alloy frame base. The light source system, the Z-axis screw drive system, and the forming platform are electrically connected to the main control board. The control panel and the data transmission interface are installed on the side surface of the alloy frame base.

[0012] In further technical solutions, the light source system uses an ultraviolet laser or a DLP projector as a light source. An optical lens and a mirror are arranged above the light source.

[0013] In further technical solutions, the resin tank is installed on the alloy frame base by fixing bolts.

[0014] In further technical solutions, a heat sink is arranged in the alloy frame base.

[0015] In further technical solutions, a baffle is arranged on the alloy frame base. A protective cover matching the alloy frame base is hingedly connected to the baffle.

[0016] In summary, due to the adoption of the above technical solutions, the utility model has the following advantages:

[0017] 1. This utility model has been modified in structural design and uses high-strength alloy materials to create the frame, which not only improves the overall rigidity, durability and stability of the light-curing 3D printer, but also effectively reduces the stress concentration area and significantly enhances the anti-deformation ability, thereby ensuring the printing accuracy of the light-curing 3D printer.

[0018] 2. The utility model adopts a Z-axis screw transmission system to replace the traditional pulley transmission system, effectively avoiding the problem of belt and wheel wear caused by frequent movement, further improving the printing accuracy, and enabling it to meet various complex and high-precision 3D printing needs.

[0019] 3. The design of the detachable connection between the slider, movable seat, connecting rod and connecting seat of the utility model makes it easy to disassemble and assemble each component, which is beneficial to the cleaning and maintenance of the equipment.

[0020] 4. The utility model can effectively prevent external light from interfering with the printing process through the use of baffles and protective covers, protect the resin material from being affected by stray light, and prevent ultraviolet light leakage, ensuring safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0025] Figure 4 It is a side view of the internal structure of the utility model.

[0026] Figure markings: 1-alloy frame base, 2-light source system, 3-resin tank, 4-molding platform, 5-projection port, 6-slide rail, 7-slider, 8-movable rod, 801-movable seat, 802-connecting rod, 9-screw, 10-servo motor, 11-connecting seat, 12-fastening handle, 13-main control board, 14-control panel, 15-data transmission interface, 16-fixing bolt, 17-heat sink, 18-baffle, 19-protective cover. DETAILED DESCRIPTION

[0027] Clearly, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present utility model.

[0028] With reference to Figures 1-4 The present utility model provides a kind of light-cured 3D printer, including alloy frame base 1, light source system 2, resin tank 3, Z-axis screw drive system, forming platform 4 and control system, the top surface of alloy frame base 1 is equipped with projection port 5, the light source system 2 is installed in alloy frame base 1 inside by projection port 5, the resin tank 3 is installed above projection port 5, the Z-axis screw drive system is installed on alloy frame base 1, the forming platform 4 is installed in the movable end of Z-axis screw drive system, and the forming platform 4 is located in resin tank 3, the control system is installed in alloy frame base 1, the light source system 2, Z-axis screw drive system and forming platform 4 are electrically connected with control system.

[0029] The working principle of the present light-cured 3D printer is mainly based on light-curing technology, which builds three-dimensional objects by layer-by-layer solidification of liquid resin. The detailed working principle is as follows:

[0030] Firstly, the resin tank 3 is installed above the projection port 5 of the alloy frame base 1 and is pre-filled with liquid resin. The molding platform 4 is initially arranged at the bottom or slightly above the resin tank 3. During operation, the control system starts the Z-axis screw drive system to make the molding platform 4 rise a certain distance according to the preset three-dimensional digital model, leaving space for the solidification of the first layer of resin. Due to gravity, the liquid resin naturally flows into the space below the molding platform 4. At this time, the control system activates the light source system 2 to irradiate according to the calculated solidification path and shape according to the preset three-dimensional digital model, so that the light penetrates the bottom of the resin tank 3 and irradiates a specific area. The liquid resin in this area rapidly solidifies under the irradiation of light. With the completion of the solidification of the first layer of resin, the Z-axis screw drive system operates to drive the molding platform 4 to rise a certain distance in the vertical direction, leaving space for the solidification of the next layer of resin. Subsequently, the liquid resin in the resin tank 3 is again affected by gravity and flows into the gap between the solidified layer and the molding platform 4. This process is repeated until the entire three-dimensional object is precisely constructed layer by layer according to the preset model. After printing is completed, the user can easily take out the finished product and perform necessary cleaning and maintenance on the molding platform 4 to prepare for the next printing task. Compared with traditional printers, the light-curing 3D printer is reformed in structure design, using high-strength alloy material to make the frame, which not only improves the overall rigidity, durability and stability of the light-curing 3D printer, but also effectively reduces the stress concentration area and significantly enhances the anti-deformation ability, thereby ensuring the printing precision of the light-curing 3D printer. In addition, the light-curing 3D printer also uses a Z-axis screw drive system to replace the traditional belt and pulley drive system, effectively avoiding the problem of belt and pulley wear caused by frequent movement, further improving the printing precision and meeting various complex and high-precision three-dimensional printing needs.

[0031] In a specific embodiment, referring to Figures 2-4 , the Z-axis screw drive system includes a sliding rail 6, a sliding block 7, a movable rod 8, a screw 9, and a servo motor 10. The sliding rail 6 is vertically installed on one side of the top surface of the alloy frame base 1. The sliding block 7 is movably arranged on the sliding rail 6. The movable rod 8 is vertically connected to the sliding block 7. The screw 9 is arranged parallel to the direction of the sliding rail 6 and penetrates the movable rod 8. The screw 9 is threadedly connected to the movable rod 8. The servo motor 10 is installed in the alloy frame base 1. The screw 9 is fixedly connected to the output shaft of the servo motor 10. The molding platform 4 is installed at the front end of the movable rod 8.

[0032] The Z-axis screw transmission system cooperates with the slide rail 6, the sliding block 7, the movable rod 8, the screw 9 and the servo motor 10 to build a stable and accurate vertical movement system for the forming platform 4, effectively improving the printing precision and printing quality of the light-curing 3D printer. Specifically, the sliding cooperation between the sliding block 7 and the slide rail 6 ensures that the movable rod 8 can move along the axial direction of the screw 9. When the servo motor 10 starts and drives the screw 9 to rotate, the movable rod 8 is axially advanced due to the threaded cooperation with the screw 9, and then moves along the axial direction of the screw 9. In this process, not only the reliable vertical movement of the forming platform 4 is realized, but also the stability and accuracy of the forming platform 4 during movement are ensured, laying a solid foundation for the printing precision and printing quality of the light-curing 3D printer.

[0033] In a specific embodiment, referring to Figures 2-4 , the movable rod 8 includes a movable seat 801 and a connecting rod 802, the movable seat 801 is connected to the sliding block 7 by bolts, and the connecting rod 802 is connected to the movable seat 801 by bolts, and the upper end of the forming platform 4 is provided with a connecting seat 11, the connecting seat 11 is sleeved on the front end of the connecting rod 802 and is fixedly installed on the connecting rod 802 by a fastening handle 12.

[0034] The movable seat 801 is connected to the sliding block 7 by bolts, the connecting rod 802 is connected to the movable seat 801 by bolts, and the connecting seat 11 is connected to the connecting rod 802 by the fastening handle 12, so that each component can be easily disassembled and assembled, which is beneficial to the cleaning and maintenance of the equipment.

[0035] In a specific embodiment, referring to Figure 1 and Figure 4 , the control system includes a main control board 13, a control panel 14 and a data transmission interface 15, the main control board 13 is arranged in the alloy frame base 1, the light source system 2, the Z-axis screw transmission system and the forming platform 4 are electrically connected with the main control board 13, and the control panel 14 and the data transmission interface 15 are installed on the side surface of the alloy frame base 1.

[0036] The main control board 13, the control panel 14, and the data transmission interface 15 play a crucial role in the operation of the light-curing 3D printer. Specifically, the main control board 13 is responsible for coordinating the operation of various parts of the light-curing 3D printer, mainly including processing the data of the 3D model, slicing the model and generating efficient printing paths, while precisely controlling the light source irradiation and the movement of the forming platform 4, ensuring the accuracy of the printing process. The control panel 14 provides an intuitive operating interface for users. Through it, users can easily set printing parameters, and can also monitor the printing progress in real time, at any time to grasp the printing status, greatly improving the user's operation experience, making the printing process more controllable and convenient. The data transmission interface 15 provides users with a variety of flexible connection methods, including USB interface, SD card slot, and wireless connection, etc. These connection methods can transfer 3D printing files from the computer to the light-curing 3D printer, supporting users to print offline or online, providing users with efficient, convenient, and flexible printing experience.

[0037] In a specific embodiment, the light source system 2 uses an ultraviolet laser as the light source, and an optical lens and a mirror are arranged above the light source.

[0038] Using an ultraviolet laser as the main light source, it provides ultraviolet light of a specific wavelength for irradiating resin materials to make them solidify. In this process, the optical lens and the mirror play a crucial role, they can effectively adjust and focus the light beam, ensuring that the light accurately irradiates the designated position, thereby improving the printing precision. It is worth mentioning that the DLP projector can be an effective alternative to the ultraviolet laser. The DLP projector can also generate high-quality, uniformly distributed ultraviolet light through its internal high-precision digital micromirror array, providing stable and reliable light source support for the solidification of resin materials.

[0039] In a specific embodiment, referring to Figure 1 and Figure 2 , the resin tank 3 is installed on the alloy frame base 1 through the fixing bolt 16.

[0040] The resin tank 3 is installed on the alloy frame base 1 through the fixing bolt 16, ensuring the firm connection between the resin tank 3 and the alloy frame base 1, effectively preventing the possible shaking or displacement during printing, thereby improving the printing quality of the light-curing 3D printer. In addition, this detachable way makes the disassembly and replacement of the resin tank 3 relatively simple and fast, providing great convenience for equipment maintenance.

[0041] In a specific embodiment, referring to Figure 2 and Figure 4 , the alloy frame base 1 is provided with a heat sink 17.

[0042] The heat sink 17 is used for dispersing the heat generated by the light source system 2 and the internal electronic elements in the working process, effectively prevents the performance decline or failure caused by the temperature being too high, ensures the continuous and stable operation of the light curing 3D printer, and improves the stability and service life of the equipment.

[0043] In a specific embodiment, referring to Figure 1 The alloy frame base 1 is provided with a baffle 18, and the baffle 18 is hingedly connected with a protective cover 19 matched with the alloy frame base 1.

[0044] Through the use of the baffle 18 and the protective cover 19, external light interference in the printing process can be effectively prevented, the resin material is protected from the influence of stray light, and ultraviolet light leakage is prevented, thereby ensuring operation safety.

[0045] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is based on the content of the present application and the drawings, is also included in the patent protection range of the present application.

Claims

1. A light-curing 3D printer, characterized in that: The invention comprises an alloy frame base (1), a light source system (2), a resin tank (3), a Z-axis screw transmission system, a molding platform (4) and a control system. The top surface of the alloy frame base (1) is provided with a projection port (5). The light source system (2) is installed inside the alloy frame base (1) through the projection port (5). The resin tank (3) is installed above the projection port (5). The Z-axis screw transmission system is installed on the alloy frame base (1). The molding platform (4) is installed at the movable end of the Z-axis screw transmission system, and the molding platform (4) is located in the resin tank (3). The control system is installed in the alloy frame base (1). The light source system (2), the Z-axis screw transmission system and the molding platform (4) are all electrically connected to the control system.

2. A light-curing 3D printer according to claim 1, characterized in that: The Z-axis screw transmission system includes a slide rail (6), a slider (7), a movable rod (8), a screw (9) and a servo motor (10), wherein the slide rail (6) is vertically mounted on one side of the top surface of the alloy frame base (1), the slider (7) is movably arranged on the slide rail (6), the movable rod (8) is vertically connected to the slider (7), the screw (9) is arranged parallel to the direction of the slide rail (6) and passes through the movable rod (8), the screw (9) is threadedly connected to the movable rod (8), the servo motor (10) is mounted in the alloy frame base (1), the screw (9) is fixedly connected to the output shaft of the servo motor (10), and the forming platform (4) is mounted at the front end of the movable rod (8).

3. A light-curing 3D printer according to claim 2, characterized in that: The movable rod (8) includes a movable seat (801) and a connecting rod (802), wherein the movable seat (801) is connected to the slider (7) by bolts, and the connecting rod (802) is connected to the movable seat (801) by bolts. The upper end of the forming platform (4) is provided with a connecting seat (11), and the connecting seat (11) is sleeved on the front end of the connecting rod (802) and fixedly mounted on the connecting rod (802) by a tightening handle (12).

4. The light-curing 3D printer according to claim 1, characterized in that: The control system comprises a main control board (13), a control panel (14) and a data transmission interface (15); the main control board (13) is arranged in the alloy frame base (1); the light source system (2), the Z-axis lead screw transmission system and the forming platform (4) are all electrically connected to the main control board (13); and the control panel (14) and the data transmission interface (15) are installed on the side of the alloy frame base (1).

5. The light-curing 3D printer according to claim 1, characterized in that: The light source system (2) uses an ultraviolet laser or a DLP projector as a light source, and an optical lens and a reflector are provided above the light source.

6. The light-curing 3D printer according to claim 1, characterized in that: The resin tank (3) is mounted on the alloy frame base (1) via fixing bolts (16).

7. The light-curing 3D printer according to claim 1, characterized in that: A radiator (17) is provided inside the alloy frame base (1).

8. The light-curing 3D printer according to claim 1, characterized in that: A baffle (18) is provided on the alloy frame base (1), and a protective cover (19) matching the alloy frame base (1) is hinged on the baffle (18).

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