A 3D printing device

Abstract

The utility model discloses a 3D printing device relates to 3D printing field, including protection support frame, the inside installation of protection support frame has hollow support station, the inner surface of hollow support station is installed with the meshing drive mechanism that carries out the rotation of shaping rotary frame, the meshing drive mechanism includes rotation drive motor, and rotation drive motor fixed mounting is in the inner surface of hollow support station, the outer surface of protection support frame is installed with the high fixed frame. This 3D printing device, need to drive the rotation work of shaping rotary frame, directly start rotation drive motor through the meshing of first meshing gear and drive second meshing gear, shaping rotary frame will rotate simultaneously, and hollow annular track and rolling bearing ball will make the rotation work of shaping rotary frame more stable, and such design makes the printing operation of rotating reciprocating, and the rotation of equipment is more stable, and makes the finished product production efficiency of equipment production higher.

Description

Technical Field

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

[0002] 3D printing, also known as additive manufacturing, is a rapid prototyping technology that uses digital model files as a basis and employs metallic or non-metallic material powders to construct objects layer by layer.

[0003] In existing designs, under the influence of gravity, the two ends of the uncured strip-shaped printing layer will bulge outward, making the ends of the strip-shaped printing layer uneven. As a result, after multiple printing layers are stacked, the sides of the 3D printed model will be uneven, thus affecting the printing effect of the 3D printing equipment.

[0004] To overcome the above-mentioned defects, the prior art (Chinese patent publication number: CN113878875B, publication date: 2024-01-23) discloses a 3D printing device. This 3D printing device includes an extrusion head and a side constraint assembly. The extrusion head is provided with an extrusion nozzle, and the side constraint assembly is provided with two relatively parallel side constraint surfaces. The two side constraint surfaces are located on both sides of the extrusion nozzle to restrict the two end faces of the printing material flowing out of the nozzle. Since there are two side constraint surfaces on both sides of the extrusion nozzle, and the two side constraint surfaces are parallel, when the extrusion head extrudes the printing material toward the printing surface, the two side constraint surfaces can constrain the two end faces of the printing material flowing out of the nozzle, thereby making the two end faces of the printing material flat, that is, printing a strip-shaped printing layer with a rectangular cross-section, thus ensuring the printing effect of the 3D printing device.

[0005] While the above design can solve the aforementioned problems, the existing design is not stable enough when the printing operation requires rotation and reciprocation during processing. This results in defective finished products and a time-consuming processing process. At the same time, the stability of the output head is limited during the material output operation. During long-term movement, the movement accuracy will decrease, making it impossible to accurately reach the specified processing position and reducing the intelligence of the equipment. Utility Model Content

[0006] The purpose of this utility model is to provide a 3D printing device to solve the problems mentioned in the background art, such as the lack of stability in the operation of existing designs when the printing operation requires rotation and reciprocation during processing, resulting in defective finished products and time-consuming processing. At the same time, the movement stability of the output head is limited during the material output operation, and the movement accuracy will decrease during long-term movement, making it impossible to accurately reach the specified processing position, thus reducing the intelligence of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a 3D printing device, including a protective support frame, a hollow support platform installed inside the protective support frame, a meshing transmission mechanism for rotating a forming rotating frame installed on the inner surface of the hollow support platform, the meshing transmission mechanism including a rotary drive motor, the rotary drive motor being fixedly installed on the inner surface of the hollow support platform, a lifting fixing frame installed on the outer surface of the protective support frame, and an elastic sliding mechanism for moving the output print head left and right inside the lifting fixing frame.

[0008] Furthermore, the elastic sliding mechanism includes a horizontal sliding plate, which is fixedly installed on the inner surface of the lifting frame. The output print head is slidably installed on the inner surface of the horizontal sliding plate, and a raw material storage box is installed on the back of the protective support frame.

[0009] Furthermore, the output end of the raw material storage box is internally connected to the top of the output print head, and side limiting frames are installed on the left and right sides of the output print head. Sliding support rods are installed inside the side limiting frames, and shrink docking rods are installed inside the front end of the sliding support rods.

[0010] Furthermore, the lower center of the forming rotating frame is rotatably mounted inside the hollow support platform, and a second meshing gear is installed at the lower center of the forming rotating frame. A first meshing gear is installed on the outer surface of the output end of the rotating drive motor, and the first meshing gear and the second meshing gear mesh with each other.

[0011] Furthermore, a hollow annular rail is installed on the upper surface of the hollow support platform, and the lower surface of the forming rotating frame is nested and slidably installed inside the hollow annular rail. Rolling bearing balls are installed inside the hollow annular rail, and the end of the lower surface of the forming rotating frame slides against the outer surface of the rolling bearing balls.

[0012] Furthermore, the forming rotating frame and the second meshing gear are designed as a single unit, and the hollow support platform is installed inside the protective support frame. The outer surface of the first meshing gear contacts the outer surface of the second meshing gear to form a meshing structure, and the inner surface of the forming rotating frame contacts the lower outer surface of the hollow annular rail to form a sliding structure.

[0013] Furthermore, a semi-circular arc rod is installed inside the shrink docking rod, and a docking groove is opened on the lower surface of the transverse sliding plate. The movement trajectory of the semi-circular arc rod corresponds to the opening position of the docking groove. Reset extension springs are installed on the left and right sides of the output print head, and the ends of the reset extension springs are fixedly installed on the outer surface of the sliding support rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are: when the 3D printing device needs to drive the forming rotating frame to rotate, the rotation drive motor is directly started and drives the second meshing gear through the meshing of the first meshing gear. The forming rotating frame will rotate simultaneously. The hollow ring rail and rolling bearing balls make the rotation of the forming rotating frame more stable. This design makes the rotation of the equipment more stable during the reciprocating printing operation, and makes the production efficiency of the finished products produced by the equipment higher.

[0015] Furthermore, when it is necessary to make the fixed-point processing of the output printhead more stable, the semi-circular rod will move laterally in sync with the movement of the output printhead, and the docking inner groove will be engaged with the semi-circular rod. The semi-circular design of the return extension spring and the semi-circular rod ensures that the movement of the device will not be greatly resisted. This design improves the movement stability of the output head and prevents the movement accuracy from decreasing during long-term movement, thus improving the intelligence of the device.

[0016] Furthermore, the material storage box designed on the outside of the protective support frame continuously supplies material into the output print head, increasing the equipment's service life. Additionally, the forming rotation frame can be driven as needed to generate adjustable speed continuous rotation, achieving more stable finished product processing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the protective support frame of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the hollow support platform of this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the forming rotating frame of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the rotary drive motor of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the lifting and fixing frame of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the sliding support rod of this utility model.

[0023] In the diagram: 1. Protective support frame; 2. Hollow support platform; 3. Forming rotating frame; 4. Lifting and fixing frame; 5. Output print head; 6. Raw material storage box; 7. Horizontal sliding plate; 8. Rotary drive motor; 9. First meshing gear; 10. Second meshing gear; 11. Hollow annular rail; 12. Rolling bearing ball; 13. Connecting inner groove; 14. Semi-circular arc rod; 15. Shrinking connecting rod; 16. Sliding support rod; 17. Side limiting frame; 18. Return extension spring. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 2 , Figure 3 and Figure 4 This utility model provides the following technical solution: a 3D printing device, including a protective support frame 1, a hollow support platform 2 installed inside the protective support frame 1, and a meshing transmission mechanism for rotating a forming rotating frame 3 installed on the inner surface of the hollow support platform 2. The meshing transmission mechanism includes a rotary drive motor 8, such as... Figure 3 As shown, the rotary drive motor 8 is fixedly installed on the inner surface of the hollow support platform 2, and the outer surface of the protective support frame 1 is equipped with a lifting fixing frame 4, and the interior of the lifting fixing frame 4 is equipped with an elastic sliding mechanism for moving the output print head 5 left and right.

[0026] like Figure 2 , Figure 3 and Figure 4 The technical solution shown addresses the problem of unstable operation in existing designs during reciprocating printing operations, leading to defects in finished products and time-consuming processing. Specifically, the lower center of the forming rotating frame 3 is rotatably mounted inside the hollow support platform 2, and a second meshing gear 10 is installed at the lower center of the forming rotating frame 3. A first meshing gear 9 is mounted on the outer surface of the output end of the rotary drive motor 8, and the first meshing gear 9 meshes with the second meshing gear 10. A hollow annular rail 11 is mounted on the upper surface of the hollow support platform 2, and the lower surface of the forming rotating frame 3 is nested and slidably mounted inside the hollow annular rail 11. Rolling bearing balls 12 are installed inside the hollow annular rail 11. Figure 4As shown, the lower end of the forming rotating frame 3 slides against the outer surface of the rolling bearing ball 12. The forming rotating frame 3 and the second meshing gear 10 are designed as a single unit. The hollow support platform 2 is installed inside the protective support frame 1. The outer surface of the first meshing gear 9 contacts the outer surface of the second meshing gear 10 to form a meshing structure. The inner surface of the forming rotating frame 3 contacts the lower outer surface of the hollow annular rail 11 to form a sliding structure.

[0027] When continuous rotation processing is required, the rotary drive motor 8, which is fixedly installed on the bottom surface inside the hollow support platform 2, is directly started. This drives the first meshing gear 9, which is fixedly installed on the outer surface of its output end, to rotate. During the rotation of the first meshing gear 9, it engages with the second meshing gear 10, which is in contact with the outer surface, causing the second meshing gear 10 to rotate synchronously. Since the second meshing gear 10 is fixedly installed at the lower center of the forming rotating frame 3, and the forming rotating frame 3 is rotatably installed inside the hollow support platform 2, as... Figure 4 As shown, the forming rotating frame 3 will continuously rotate along the hollow support platform 2 driven by the second meshing gear 10. During the rotation of the forming rotating frame 3, the forming rotating frame 3 will perform limited circumferential rotation along the hollow annular rail 11 fixedly installed at the corresponding position on the upper surface of the hollow support platform 2. The rotation of the forming rotating frame 3 will contact and be driven by the rolling bearing ball 12 nested inside the hollow annular rail 11. The driving of the rolling bearing ball 12 will make the rotation work more stable and smooth. Moreover, the rotation trajectory of the forming rotating frame 3 is always consistent with the working range of the output print head 5. This design makes product processing faster and more stable.

[0028] Example 2: Figure 1 , Figure 5 and Figure 6 The technical solution shown addresses the problem of limited stability of the output head during raw material output operations, leading to decreased movement accuracy and inability to precisely reach the designated processing position, thus reducing the intelligence of the equipment. It discloses an elastic sliding mechanism including a transverse sliding plate 7, which is fixedly mounted on the inner surface of the lifting frame 4. The output print head 5 is slidably mounted on the inner surface of the transverse sliding plate 7. A raw material storage box 6 is installed on the back of the protective support frame 1. The output end of the raw material storage box 6 is internally connected to the top of the output print head 5. Side limiting frames 17 are installed on both sides of the output print head 5, and sliding support rods 16 are installed inside the side limiting frames 17. Figure 5As shown, a shrink docking rod 15 is installed inside the front end of the sliding support rod 16, and a semi-circular rod 14 is installed inside the shrink docking rod 15. A docking groove 13 is opened on the lower surface of the transverse sliding plate 7. The movement trajectory of the semi-circular rod 14 corresponds to the opening position of the docking groove 13. Reset extension springs 18 are installed on the left and right sides of the output print head 5, and the end of the reset extension spring 18 is fixedly installed on the outer surface of the sliding support rod 16.

[0029] When the output printhead 5 is moved to adjust its left and right position, the output printhead 5 will slide laterally along the inside of the fixedly installed output printhead 5 inside the lifting bracket 4, so that the output port direction of the output printhead 5 will be adjusted left and right. When the output printhead 5 moves, the semi-circular arc rods 14 on the left and right sides will move accordingly, and the semi-circular arc rods 14 will slide into the docking groove 13 opened on the lower surface of the horizontal sliding plate 7, so that the docking groove 13 and the semi-circular arc rods 14 are docked. When the semi-circular arc rods 14 are moved left and right to disengage from the docking groove 13, the semi-circular arc rods 14 will be resisted and will initially retract along the inside of the retracting docking rod 15. At the same time, the retracting docking rod 15 will also be pulled obliquely and rotate circumferentially along the inside of the end of the sliding support rod 16. Figure 6 As shown, the rotation of the retractable docking rod 15 will cause the sliding support rod 16 to slide downwards due to resistance. The sliding support rod 16 will slide up and down along the side limit frame 17 fixedly installed on the left and right sides of the output print head 5. During the movement of the sliding support rod 16, the reset extension spring 18 fixedly installed on the inner surface will be driven to perform corresponding extension work until the semi-circular rod 14 enters the corresponding appropriately processed docking inner groove 13. At this time, the reset extension spring 18 releases its own elasticity, pushing the semi-circular rod 14 upwards to complete the mutual nesting and fixation with the docking inner groove 13.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A 3D printing device, comprising a protective support frame (1), wherein a hollow support platform (2) is installed inside the protective support frame (1), characterized in that: The inner surface of the hollow support platform (2) is equipped with a meshing transmission mechanism that rotates the forming rotating frame (3); The meshing transmission mechanism includes a rotary drive motor (8), which is fixedly installed on the inner surface of the hollow support platform (2). The outer surface of the protective support frame (1) is equipped with a lifting fixing frame (4), and the interior of the lifting fixing frame (4) is equipped with an elastic sliding mechanism for moving the output print head (5) left and right.

2. The 3D printing device according to claim 1, characterized in that: The elastic sliding mechanism includes a horizontal sliding plate (7), which is fixedly installed on the inner surface of the lifting frame (4). The output print head (5) is slidably installed on the inner surface of the horizontal sliding plate (7), and a raw material storage box (6) is installed on the back of the protective support frame (1).

3. The 3D printing apparatus according to claim 2, characterized in that: The output end of the raw material storage box (6) is internally connected to the top of the output print head (5), and side limiting frames (17) are installed on the left and right sides of the output print head (5). A sliding support rod (16) is installed inside the side limiting frame (17), and a shrink docking rod (15) is installed inside the front end of the sliding support rod (16).

4. The 3D printing device according to claim 1, characterized in that: The lower center of the forming rotating frame (3) is rotatably installed inside the hollow support platform (2), and a second meshing gear (10) is installed at the lower center of the forming rotating frame (3). A first meshing gear (9) is installed on the outer surface of the output end of the rotating drive motor (8), and the first meshing gear (9) meshes with the second meshing gear (10).

5. A 3D printing apparatus according to claim 4, characterized in that: The upper surface of the hollow support platform (2) is equipped with a hollow annular rail (11), and the lower surface of the forming rotating frame (3) is nested and slidably installed inside the hollow annular rail (11). The interior of the hollow annular rail (11) is equipped with rolling bearing balls (12), and the end of the lower surface of the forming rotating frame (3) slides against the outer surface of the rolling bearing balls (12).

6. A 3D printing apparatus according to claim 5, characterized in that: The forming rotating frame (3) and the second meshing gear (10) are designed as a single unit, and the hollow support platform (2) is installed inside the protective support frame (1). The outer surface of the first meshing gear (9) and the outer surface of the second meshing gear (10) are in contact to form a meshing structure, and the inner surface of the forming rotating frame (3) and the lower outer surface of the hollow annular rail (11) are in contact to form a sliding structure.

7. A 3D printing apparatus according to claim 3, characterized in that: The shrink docking rod (15) has a semi-circular arc rod (14) installed inside, and the lower surface of the transverse sliding plate (7) has a docking groove (13). The movement trajectory of the semi-circular arc rod (14) corresponds to the opening position of the docking groove (13). The left and right sides of the output print head (5) are equipped with reset extension springs (18), and the end of the reset extension spring (18) is fixedly installed on the outer surface of the sliding support rod (16).

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