A 3D printer adjustable platform

Abstract

The utility model discloses a 3D printer adjustable platform relates to adjustable platform technical field. The 3D printer adjustable platform, including the bottom plate, is fixedly connected with the positioning pin on the bottom plate, is fixedly connected with the support seat on the bottom plate, is rotatably connected with the lead screw on the support seat, is threadedly connected with the nut on the lead screw, is provided with the platform on the nut, is equipped with the positioning hole on the platform, is equipped with the sliding slot on the platform, is slidably connected with the sliding plate on the sliding slot, is fixedly installed with second motor on the platform, is fixedly connected with the push rod of second motor output, and first motor, lead screw and nut realize automatic lifting, and the adjustment precision is high, and need not manual intervention, and the positioning hole is limited horizontal deviation with the cooperation of the positioning pin, further guarantees the perpendicularity, improves the adjustment efficiency, and the sliding plate can be accurately adjusted through second motor, and is suitable for small size, special-shaped, super-wide model, avoids the platform idle or the support deficiency, and improves the platform utilization.

Description

Technical Field

[0001] This utility model relates to the field of adjustable platform technology, and in particular to an adjustable platform for a 3D printer. Background Technology

[0002] In 3D printing, the support structure and automatic adjustment of the printing platform are crucial for ensuring printing accuracy and efficiency: the support structure determines the platform's load-bearing stability, while the automatic adjustment compensates for levelness and height errors. Both must work together to meet the printing needs of models ranging from small to large sizes. However, existing technologies suffer from the following key shortcomings, hindering industry applications: The support structure design is unreasonable and cannot provide a stable foundation for automatic adjustment. The four-point support is prone to platform warping due to over-constraint. The three-point support is not distributed in an equilateral triangle. The concentrated load causes deformation of the support seat, which destroys the automatic adjustment reference. The support seat material has low strength and there is no lateral reinforcement to the connection with the base plate. The top of the lead screw has no positioning constraint, which makes it easy to wobble or tilt during adjustment, resulting in a decrease in adjustment accuracy. The large thread clearance between the lead screw and nut causes back-stroke during adjustment, which requires repeated calibration, resulting in low efficiency and difficulty in compensating for the defects of the support structure. Therefore, there is an urgent need for a collaborative design scheme that supports structural geometric stability and automatically adjusts for precise adaptation, breaking through existing technological bottlenecks. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an adjustable platform for a 3D printer that can solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable platform for a 3D printer, including a base plate, a positioning pin fixedly connected to the base plate, a support base fixedly connected to the base plate, a lead screw rotatably connected to the support base, a nut threadedly connected to the lead screw, a platform provided on the nut, a positioning hole provided on the platform, the positioning hole corresponding to the positioning pin, a connecting hole provided on the platform, and the lead screw passing through the connecting hole; Side plates are fixedly connected to the base plate. There are three side plates. A top plate is fixedly connected to the side plates. An opening is provided on the top plate. A first motor is provided on the opening. The bottom output end of the first motor passes through the opening. A coupling is fixedly connected to the bottom output end of the first motor. The bottom of the coupling is fixedly connected to the top of the lead screw. The platform has a sliding groove, on which a sliding plate is slidably connected. The platform also has a guide groove, and a second motor is fixedly installed on the platform. A push rod is fixedly connected to the output end of the second motor. The push rod is located in the guide groove, and one end of the push rod is fixedly connected to the sliding plate.

[0005] Preferably, there are two positioning pins, which are distributed along the diagonal of the base plate.

[0006] Preferably, three support seats are provided, and the three support seats are distributed in an equilateral triangle, with the three support seats located at the three corners of the equilateral triangle respectively.

[0007] Preferably, the lead screw is vertically arranged, and the lower end of the lead screw is rotatably connected to the support base.

[0008] Preferably, the guide groove is U-shaped, one end of the guide groove is fixedly connected to one end of the slide groove, and the U-shaped opening of the guide groove faces upward.

[0009] Preferably, two sets of the second motor and the push rod are symmetrically arranged on the platform, with the two sets of the second motor and the push rod located on the same side of the slide.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The 3D printer features an adjustable platform. The first motor, lead screw, and nut enable automatic lifting and lowering with high precision, requiring no manual intervention. The positioning holes and positioning pins work together to limit horizontal deviation, further ensuring verticality and improving adjustment efficiency. The sliding plate can be precisely adjusted via the second motor to accommodate small, irregular, and ultra-wide models, preventing the platform from being idle or under-supported and improving platform utilization.

[0011] 2. The adjustable platform of this 3D printer features a grease layer between the sliding plate and the slide groove to reduce friction, minimize mechanical wear, extend component life, and ensure smooth adjustment with rapid response. Two sets of second motors and push rods are symmetrically distributed to apply balanced power from both sides of the sliding plate, avoiding tilting caused by unilateral force and ensuring stable adjustment.

[0012] 3. The 3D printer features an adjustable platform with two diagonal positioning pins that engage with positioning holes to limit horizontal offset and rotation. This provides superior positioning stability compared to single positioning, minimizing errors and ensuring printing accuracy. Each component is an independent module, making assembly and disassembly simple. In case of malfunction, individual components can be replaced without disassembling the entire unit, reducing maintenance difficulty. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of an adjustable platform for a 3D printer according to the present invention; Figure 2 This is a schematic diagram of an adjustable platform for a 3D printer according to the present invention; Figure 3 This is a cross-sectional schematic diagram of an adjustable platform for a 3D printer according to the present invention; Figure 4 This is a cross-sectional schematic diagram of an adjustable platform for a 3D printer according to the present invention.

[0014] Reference numerals in the attached drawings: 1. Base plate; 2. Locating pin; 3. Support seat; 4. Lead screw; 5. Nut; 6. Platform; 7. Locating hole; 8. Connecting hole; 9. Side plate; 10. Top plate; 11. Opening; 12. First motor; 13. Coupling; 14. Slide groove; 15. Sliding plate; 16. Guide groove; 17. Second motor; 18. Push rod. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0018] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0019] Please see Figure 1-4 This utility model provides a technical solution: an adjustable platform for a 3D printer, including a base plate 1, with two positioning pins 2 fixedly connected to the base plate 1 and distributed along the diagonal. A support base 3 is fixedly connected to the base plate 1, with three support bases 3 arranged in an equilateral triangle and located at the three corners of the triangle. A lead screw 4 is rotatably connected to the support base 3, and a nut 5 is threadedly connected to the lead screw 4. A platform 6 is provided on the nut 5, and the nut 5 provides support for the platform 6. The platform 6 is provided with a positioning hole 7, which corresponds to the positioning pin 2. The platform 6 is provided with a connecting hole 8, and the lead screw 4 passes through the connecting hole 8. A side plate 9 is fixedly connected to the base plate 1. There are three side plates 9. A top plate 10 is fixedly connected to the side plate 9. An opening 11 is opened on the top plate 10. A first motor 12 is installed on the opening 11. The bottom output end of the first motor 12 passes through the opening 11. A coupling 13 is fixedly connected to the bottom output end of the first motor 12. The bottom of the coupling 13 is fixedly connected to the top of the lead screw 4. Platform 6 is provided with a slide groove 14, and a sliding plate 15 is slidably connected to the slide groove 14. A layer of grease is provided between the sliding plate 15 and the slide groove 14. The grease is a common lubricating oil. Platform 6 is provided with a guide groove 16. The guide groove 16 is U-shaped and one end is fixedly connected to one end of the slide groove 14. A second motor 17 is fixedly installed on platform 6. A push rod 18 is fixedly connected to the output end of the second motor 17. The push rod 18 is located in the guide groove 16. One end of the push rod 18 is fixedly connected to the sliding plate 15. Two sets of the second motor 17 and the push rod 18 are symmetrically arranged on platform 6. When in use, the first motor 12 at the opening 11 of the top plate 10 is started, and its output end transmits power to the lead screw 4 through the coupling 13. Because the lead screw 4 is threadedly connected to the nut 5, and the nut 5 supports the platform 6, when the lead screw 4 rotates, the nut 5 moves up and down along the axis of the lead screw 4, which drives the platform 6 to move up and down synchronously, thereby realizing the Z-axis height adjustment. During the adjustment process, the positioning hole 7 and the positioning pin 2 always cooperate to ensure the verticality and accuracy of the platform 6 lifting. For models of different sizes, two sets of symmetrical second motors 17 on the starting platform 6 are activated. The second motors 17 drive the push rod 18 to move along the U-shaped guide groove 16. The push rod 18 is fixed to the sliding plate 15 in the slide groove 14, thus driving the sliding plate 15 to slide in the slide groove 14. The grease layer between the sliding plate 15 and the groove 14 reduces friction and makes the adjustment smoother; the position of the sliding plate 15 can be precisely controlled by the coordinated drive of two sets of second motors 17, and the effective printing support area of ​​the platform 6 can be adjusted to adapt to different models. After adjustment, the first motor 12 and the second motor 17 stop. The threaded engagement between the lead screw 4 and the nut 5 has self-locking properties, keeping the Z-axis position of the platform 6 stable. The sliding plate 15 is positioned against the push rod 18 by friction, maintaining its adjusted position and ensuring no displacement during the printing process, thus guaranteeing accuracy.

[0020] Working principle: The base plate 1 provides basic support for the entire platform 6. Two positioning pins 2 distributed along the diagonal are fixed to the base plate 1. The platform 6 cooperates with the positioning pins 2 through the positioning holes 7 to achieve preliminary accurate positioning in the horizontal direction, limiting the offset and rotation of the platform 6. Three support seats 3 distributed in an equilateral triangle on the base plate 1, together with the side plates 9 and top plates 10 fixed to the support seats 3, form a stable frame to ensure overall rigidity and prevent shaking during adjustment. The first motor 12 at the opening 11 of the top plate 10 is started, and its output end transmits power to the lead screw 4 through the coupling 13. Since the lead screw 4 is threadedly connected to the nut 5 and the nut 5 supports the platform 6, when the lead screw 4 rotates, the nut 5 moves up and down along the axis of the lead screw 4, driving the platform 6 to move up and down synchronously, realizing the Z-axis height adjustment. During the adjustment process, the positioning hole 7 and the positioning pin 2 always cooperate to ensure the verticality and accuracy of the platform 6's lifting. For models of different sizes, two sets of symmetrical second motors 17 on the start platform 6 are activated. The second motors 17 drive the push rod 18 to move along the U-shaped guide groove 16. The push rod 18 is fixed to the sliding plate 15 in the slide groove 14, thus driving the sliding plate 15 to slide in the slide groove 14. The grease layer between the sliding plate 15 and the slide groove 14 reduces friction and makes the adjustment smoother. Through the coordinated drive of the two sets of second motors 17, the position of the sliding plate 15 can be precisely controlled, and the effective printing support area of ​​the platform 6 can be adjusted to adapt to different models. After adjustment, the first motor 12 and the second motor 17 stop. The threaded engagement between the lead screw 4 and the nut 5 has self-locking properties, keeping the Z-axis position of the platform 6 stable. The sliding plate 15 is positioned by friction with the push rod 18, maintaining the adjusted position and ensuring no displacement during the printing process, thus guaranteeing accuracy. The frame consisting of base plate 1, support base 3, side plate 9, and top plate 10 evenly distributes the weight of platform 6 and model, preventing the large-sized platform 6 from sagging in the center and solving the problem of insufficient rigidity of existing platform 6. The first motor 12, lead screw 4, and nut 5 enable automatic lifting and lowering with high adjustment accuracy and no need for manual intervention; the positioning hole 7 and the positioning pin 2 cooperate to limit horizontal deviation, further ensuring verticality and improving adjustment efficiency; The sliding plate 15 can be precisely adjusted by the second motor 17 to adapt to small-sized, irregular-shaped, and ultra-wide models, avoiding platform 6 being idle or insufficiently supported, and improving the utilization rate of platform 6. The grease layer between the sliding plate 15 and the slide groove 14 reduces friction, reduces mechanical wear, extends component life, and ensures smooth adjustment and rapid response. Two sets of second motors 17 and push rods 18 are symmetrically distributed to apply balanced power from both sides of the sliding plate 15, avoiding tilting caused by force on one side and ensuring smooth adjustment. Two diagonal locating pins 2 cooperate with locating holes 7 to limit the horizontal offset and rotation of platform 6. The positioning stability is better than that of single positioning, with small error and ensuring printing accuracy. Each component is an independent module, making assembly and disassembly simple. In case of failure, individual components can be replaced without disassembling the whole, reducing maintenance difficulty. The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An adjustable platform for a 3D printer, comprising a base plate (1), characterized in that: A positioning pin (2) is fixedly connected to the base plate (1), a support base (3) is fixedly connected to the base plate (1), a lead screw (4) is rotatably connected to the support base (3), a nut (5) is threaded onto the lead screw (4), a platform (6) is provided on the nut (5), a positioning hole (7) is provided on the platform (6), the positioning hole (7) is corresponding to the positioning pin (2), a connecting hole (8) is provided on the platform (6), and the lead screw (4) passes through the connecting hole (8); A side plate (9) is fixedly connected to the base plate (1). There are three side plates (9). A top plate (10) is fixedly connected to the side plate (9). An opening (11) is provided on the top plate (10). A first motor (12) is provided on the opening (11). The bottom output end of the first motor (12) passes through the opening (11). A coupling (13) is fixedly connected to the bottom output end of the first motor (12). The bottom of the coupling (13) is fixedly connected to the top of the lead screw (4). The platform (6) is provided with a sliding groove (14), and a sliding plate (15) is slidably connected to the sliding groove (14). The platform (6) is provided with a guide groove (16), and a second motor (17) is fixedly installed on the platform (6). A push rod (18) is fixedly connected to the output end of the second motor (17). The push rod (18) is located in the guide groove (16), and one end of the push rod (18) is fixedly connected to the sliding plate (15).

2. The adjustable platform for a 3D printer according to claim 1, characterized in that: There are two positioning pins (2), and the two positioning pins (2) are distributed along the diagonal of the base plate (1).

3. The adjustable platform for a 3D printer according to claim 1, characterized in that: There are three support seats (3), which are arranged in an equilateral triangle and are located at the three corners of the equilateral triangle respectively.

4. The adjustable platform for a 3D printer according to claim 3, characterized in that: The lead screw (4) is set vertically, and the lower end of the lead screw (4) is rotatably connected to the support base (3).

5. The adjustable platform for a 3D printer according to claim 1, characterized in that: The guide groove (16) is U-shaped, and one end of the guide groove (16) is fixedly connected to one end of the slide groove (14). The U-shaped opening of the guide groove (16) faces upward.

6. The adjustable platform for a 3D printer according to claim 1, characterized in that: The second motor (17) and the push rod (18) are symmetrically arranged in two sets on the platform (6), and the two sets of the second motor (17) and the push rod (18) are located on the same side of the slide (14).

7. The adjustable platform for a 3D printer according to claim 1, characterized in that: The diameter of the opening (11) is adapted to the outer diameter of the bottom output end of the first motor (12).

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