3D printer forming platform lifting structure

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a 3D printer forming platform lifting structure which comprises a base, a horizontal moving assembly and a top plate are sequentially distributed above the base, a plurality of guide supporting assemblies are evenly distributed between the base and the top plate, and the guide supporting assemblies penetrate through the horizontal moving assembly. A horizontal moving assembly is arranged on the top plate and movably matched with the horizontal moving assembly, a push-pull frame is connected to the upper portion of the horizontal moving assembly, a lifting motor set is arranged on the top plate, and the bottom end of a transmission lead screw arranged on the lifting motor set in a penetrating mode penetrates through the top plate and is fixed to the push-pull frame. When moving up and down, the horizontal moving assembly is guided by the guiding and supporting assembly. The lifting motor set is used for providing driving force, the transmission lead screw is driven to move up and down through the transmission structure, namely the horizontal moving assembly is driven to ascend or descend, and the effective use area of the platform is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a lifting structure of a molding platform of a 3D printer. Background Art

[0002] 3D printers, also known as three-dimensional printers, are machines that implement rapid prototyping. The basic principle is to print out raw materials layer by layer based on a data model to eventually form a 3D model. When printing layer by layer, the nozzle needs to maintain a certain height with the product. As the product height increases due to layer by layer printing, the height of the nozzle also rises synchronously, which means that the nozzle needs to be located in a lifting structure.

[0003] Existing lifting structures usually take up space on the printing platform, affecting the size of the printable object. Placing the lifting structure externally will expose it directly to the outside, making it unsafe to use. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a 3D printer molding platform lifting structure, and the specific technical solution is as follows:

[0005] A 3D printer molding platform lifting structure comprises a base, a horizontal moving component and a top plate are sequentially arranged above the base, a plurality of guide support components are evenly distributed between the base and the top plate, the guide support components all pass through the horizontal moving component and movably cooperate with the horizontal moving component, a push-pull frame is connected above the horizontal moving component, a lifting motor group is arranged on the top plate, the bottom end of a transmission screw rod inserted in the lifting motor group passes through the top plate and is fixed to the push-pull frame.

[0006] As an improvement of the above technical solution, the guide support assembly includes a support screw and a bearing connector, the bearing connector is sleeved on the support screw and threadedly matched with the support screw, and the bearing connector is embedded in the horizontal moving assembly and fixed to the horizontal moving assembly.

[0007] As an improvement of the above technical solution, the horizontal moving assembly is a rectangular structure, a set of opposite edges on the horizontal moving assembly is a transverse moving rail, and the other set of opposite edges is a support plate. The transverse moving rails are respectively connected to the two ends of the same longitudinal moving rail in a transmission manner, and the longitudinal moving rail is connected to a print head assembly in a transmission manner.

[0008] As an improvement of the above technical solution, the push-pull frame is H-shaped, with both ends bent downward and respectively connected to corresponding support plates.

[0009] As an improvement of the above technical solution, the support screw passes through the support plate and is movably connected to the support plate through a bearing connector.

[0010] As an improvement of the above technical solution, the lifting motor set is located in the middle of the top surface of the top plate and is detachably and fixedly connected to the top plate.

[0011] Advantages of the present utility model:

[0012] 1. When the horizontal moving assembly moves up and down, it is guided by the guiding and supporting assembly. The lifting motor set is used to provide driving force, and drives the transmission lead screw to move up and down through the transmission structure, that is, drives the horizontal moving assembly to rise or fall, so as to improve the effective use area of the platform.

[0013] 2. The bottom end of the support lead screw is fixed to the base, and the top end is fixed to the top plate, so that the support lead screw is in a fixed state. The bearing connecting piece is a bearing structure, and an internal thread structure that is threadedly matched with the support lead screw is provided on the inner wall of the inner ring. When the horizontal moving assembly rises or falls, the outer ring of the bearing connecting piece is fixed to the horizontal moving assembly, and the inner ring of the bearing connecting piece is threadedly matched with the support lead screw, so that the inner ring of the bearing connecting piece rotates around the support lead screw. Compared with the traditional sliding fit, the fit through the thread structure is more stable and the movement is more accurate. Description of the drawings

[0014] Figure 1 It is a front view of a lifting structure of a 3D printer forming platform;

[0015] Figure 2 It is a top view of the push-pull frame in a lifting structure of a 3D printer forming platform;

[0016] Figure 3 It is a top view of a lifting structure of a 3D printer forming platform;

[0017] Figure 4 It is a schematic structural diagram of a bearing connecting piece in a lifting structure of a 3D printer forming platform.

[0018] In the figure: 1. Base; 2. Horizontal moving assembly; 21. Transverse moving rail; 22. Support plate; 23. Longitudinal moving rail; 24. Print head assembly; 3. Top plate; 4. Guiding and supporting assembly; 41. Support lead screw; 42. Bearing connecting piece; 5. Push-pull frame; 6. Lifting motor set; 7. Transmission lead screw. Detailed implementation manners

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] As Figures 1-4 , the present utility model provides a technical solution:

[0021] A lifting structure for a 3D printer forming platform, comprising a base 1, a horizontal moving component 2 and a top plate 3 are sequentially distributed above the base 1, and a plurality of guiding and supporting components 4 are evenly distributed between the base 1 and the top plate 3. The guiding and supporting components 4 all pass through the horizontal moving component 2 and are movably matched with the horizontal moving component 2. A push-pull frame 5 is connected above the horizontal moving component 2. There is a lifting motor group 6 on the top plate 3. The bottom end of the transmission lead screw 7 inserted through the lifting motor group 6 passes through the top plate 3 and is fixed to the push-pull frame 5.

[0022] In order to ensure that the lifting structure does not affect the effective use area of the platform, the lifting structure is made to the top. Specifically, a plurality of guiding and supporting components 4 are evenly distributed between the base 1 and the top plate 3. In the following embodiments, four guiding and supporting components 4 are taken as an example.

[0023] When the horizontal moving component 2 moves up and down, it is guided by the guiding and supporting components 4. The lifting motor group 6 is used to provide driving force, and drives the transmission lead screw 7 to move up and down through a transmission structure, that is, drives the horizontal moving component 2 to rise or fall.

[0024] In this embodiment, the lifting motor group 6 is composed of an existing motor and a gear transmission structure combined.

[0025] To facilitate understanding of the technical solution of the present application, a specific embodiment of the guiding and supporting component 4 is given.

[0026] The guiding and supporting component 4 includes a supporting lead screw 41 and a bearing connecting piece 42. The bearing connecting piece 42 is sleeved on the supporting lead screw 41 and is in threaded cooperation with the supporting lead screw 41. The bearing connecting piece 42 is embedded in the horizontal moving component 2 and is fixed to the horizontal moving component 2.

[0027] The bottom end of the supporting lead screw 41 is fixed to the base 1, and the top end is fixed to the top plate 3, so that the supporting lead screw 41 is in a fixed state. The bearing connecting piece 42 is a bearing structure, and an internal thread structure c that is in threaded cooperation with the supporting lead screw 41 is provided on the inner wall of the inner ring. When the horizontal moving component 2 rises or falls, the outer ring a of the bearing connecting piece 42 is fixed to the horizontal moving component 2, and the inner ring b of the bearing connecting piece 42 is in threaded cooperation with the supporting lead screw 41, so that the inner ring of the bearing connecting piece 42 rotates around the supporting lead screw 41.

[0028] Compared with the traditional sliding fit, the cooperation through the thread structure is more stable and the movement is more precise.

[0029] The horizontal moving component 2 is of a rectangular structure. A set of opposite edges on the horizontal moving component 2 are the transverse moving rails 21, and the other set of opposite edges are the support plates 22. The transverse moving rails 21 are respectively drivingly connected to both ends of the same longitudinal moving rail 23, and a print head assembly 24 is drivingly connected to the longitudinal moving rail 23.

[0030] The horizontal moving component 2 is of a conventional rectangular structure. The transverse moving rails 21 synchronously drive the longitudinal moving rail 23 to move, thus realizing the arbitrary movement of the print head assembly 24 on the plane. The support plates 22 are used to connect the transverse moving rails 21 together to form an integral body, so that all parts of the horizontal moving component 2 can move as a whole.

[0031] The push-pull frame 5 is in an H shape, with both ends bent downward and respectively connected to the corresponding support plates 22.

[0032] The push-pull frame 5 is arranged in an H-shaped structure to minimize the occlusion of space. The two ends are bent downward with a gap from the support plates 22 to avoid interference with the print head assembly 24 and ensure the safe operation of the device.

[0033] The support screw rod 41 passes through the support plate 22 and is movably connected to the support plate 22 through a bearing connecting piece 42. When the support screw rod 41 is connected to the support plate 22, there is no need to add an additional connecting structure on the transverse moving rail 21. And the effective stroke of the longitudinal moving rail 23 on the transverse moving track 21 is not limited by the support screw rod 41.

[0034] The lifting motor set 6 is located in the middle of the top surface of the top plate 3 and is detachably and fixedly connected to the top plate 3. The lifting motor set 6 is located in the middle and acts on the middle of the push-pull frame 5 through the transmission screw rod 7 to achieve uniform force application.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A 3D printer molding platform lifting structure, characterized in that: The invention comprises a base (1), a horizontal moving assembly (2) and a top plate (3) are sequentially arranged above the base (1), a plurality of guide support assemblies (4) are evenly arranged between the base (1) and the top plate (3), the guide support assemblies (4) all pass through the horizontal moving assembly (2) and are movably matched with the horizontal moving assembly (2), a push-pull frame (5) is connected above the horizontal moving assembly (2), a lifting motor group (6) is arranged on the top plate (3), the bottom end of a transmission screw rod (7) inserted into the lifting motor group (6) passes through the top plate (3) and is fixed to the push-pull frame (5).

2. A 3D printer molding platform lifting structure according to claim 1, characterized in that: The guide support assembly (4) comprises a support screw (41) and a bearing connector (42); the bearing connector (42) is sleeved on the support screw (41) and threadedly matched with the support screw (41); the bearing connector (42) is embedded in the horizontal moving assembly (2) and fixed to the horizontal moving assembly (2).

3. A 3D printer molding platform lifting structure according to claim 2, characterized in that: The horizontal moving assembly (2) is a rectangular structure. A set of opposite edges on the horizontal moving assembly (2) is a transverse moving rail (21), and another set of opposite edges is a support plate (22). The transverse moving rail (21) is respectively connected to two ends of the same longitudinal moving rail (23) in a transmission manner. The longitudinal moving rail (23) is connected to a print head assembly (24) in a transmission manner.

4. A 3D printer molding platform lifting structure according to claim 3, characterized in that: The push-pull frame (5) is H-shaped, with two ends bent downward and respectively connected to corresponding support plates (22).

5. A 3D printer molding platform lifting structure according to claim 3, characterized in that: The support screw rod (41) passes through the support plate (22) and is movably connected to the support plate (22) via a bearing connector (42).

6. A 3D printer molding platform lifting structure according to claim 1, characterized in that: The lifting motor group (6) is located in the middle of the top surface of the top plate (3) and is detachably fixedly connected to the top plate (3).

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