A printing platform for a 3D printer

Abstract

A printing platform for a 3D printer, belonging to the field of 3D printing technology, includes a 3D printer body and a printing platform. The printing platform is positioned above the 3D printer body and includes a tilt adjustment component. The tilt adjustment component includes: a rotating seat, a rotating shaft, an adjustment platform, an arc-shaped slide, a long bolt, and a second positioning nut. The rotating seat is fixedly installed in the middle of the lower surface of the printing platform and is U-shaped. This invention's tilt adjustment function allows the printing platform to adaptively adjust its posture according to the tilt of the model's bottom surface, solving the problems of suspended printing and complex support structures, significantly enhancing the processing capability of irregularly shaped parts. The dual-mode linear displacement system achieves coordinated control of initial positioning and real-time movement, expanding the displacement range and flexibly adjusting the printing position. Rigid limits ensure stable tilt posture, meeting the requirements of high-precision printing.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing technology, specifically relating to a printing platform for a 3D printer. Background Technology

[0002] 3D printing is an additive manufacturing technology that creates three-dimensional objects by depositing materials layer by layer based on digital models. During the printing process, the printing platform serves as a load-bearing foundation, providing a stable support surface to ensure forming accuracy. After the material is heated and melted by the nozzle, it is deposited layer by layer on the platform according to a preset path, and then cooled, solidified, and stacked to form the final shape. It is widely used in many fields such as industrial manufacturing, medical, and construction.

[0003] A related technology (Chinese Patent Publication No. CN207789745U) discloses a printing platform for a 3D printer, including a support, a conveyor belt, rollers, and a drive device. The 3D printer prints a model onto the conveyor belt. After printing, the drive device moves the conveyor belt, causing the model on the conveyor belt to move towards the edge of the printing platform. When the model reaches the edge, the conveyor belt curls along the roller surface, causing the model to detach from the conveyor belt and thus detach from the printing platform. This prevents the printing platform from being occupied by the printed model, allowing the 3D printer to continue printing the next model. The printing platform provided by this invention eliminates the need for manual removal of the printed model, enabling uninterrupted printing by the 3D printer, greatly saving time and improving the output efficiency of the 3D printer.

[0004] While existing 3D printers have linear displacement capabilities in the forward and backward directions, they lack a tilt adjustment mechanism. This single degree of freedom in motion means that when facing a 3D model with a tilted bottom, the device cannot achieve adaptive fitting between the printing surface and the bottom surface of the model through platform posture adjustment. This leads to problems such as suspended printing, complex support structures, or printing failures, significantly restricting the device's adaptability to processing irregularly shaped structural parts. Utility Model Content

[0005] To address the problem that existing printing platforms, which only possess linear forward and backward displacement capabilities and lack tilt adjustment functions, are unable to adapt to printing 3D models with tilted bottom surfaces, this invention provides a printing platform for a 3D printer. This platform possesses forward and backward tilt adjustment capabilities. This adjustment function adaptively adjusts the posture of the printing platform according to the tilt angle of the 3D model's bottom surface, ensuring precise contact between the printing surface and the model's bottom surface. This effectively solves problems such as suspended printing, complex support structures, and printing failures, significantly improving the equipment's adaptability and process compatibility for processing irregularly shaped parts. The specific technical solution is as follows:

[0006] A printing platform for a 3D printer includes a 3D printer body and a printing platform, the printing platform being disposed above the 3D printer body. It also includes a tilt adjustment assembly, which comprises: a rotating base, a rotating shaft, an adjusting platform, an arc-shaped slide rail, a long bolt, and a second positioning nut. The rotating base is fixedly installed in the middle of the lower surface of the printing platform and is U-shaped. Two rotating shafts are provided, and the two shafts are rotatably connected to the left and right sides of the bottom end of the rotating base, respectively. The adjusting platform is disposed inside the rotating base and is U-shaped. Two arc-shaped slide rails are provided, and the two arc-shaped slide rails are respectively formed on the left and right side walls of the adjusting platform. The long bolt passes through the inner cavities of the two arc-shaped slide rails and the right side wall of the rotating base from the left side wall of the adjusting platform to the right side, and the long bolt is threadedly connected to the right side wall of the rotating base. The second positioning nut is threadedly sleeved on the right end of the long bolt.

[0007] In the above technical solution, the two rotating shafts are coaxially arranged in the horizontal direction.

[0008] In the above technical solution, the location of the center of the arc-shaped slide path is on the same horizontal axis as the center point of the rotating shaft.

[0009] In the above technical solution, the 3D printer body is provided with a single-axis drive system, which includes: a base, a motor, a slide groove, a lead screw, and a slide table. The base is fixedly installed on the 3D printer body in the front-to-back direction; the motor is installed on the rear side wall of the base; the slide groove is formed on the upper surface of the base in the front-to-back direction; the lead screw is rotatably connected to the inner cavity of the slide groove, and the lead screw is connected to the output end of the motor; the slide table is threaded onto the lead screw, and the slide table is slidably embedded in the inner cavity of the slide groove.

[0010] In the above technical solution, an initial linear adjustment component is provided on the slide table. The initial linear adjustment component includes a connecting base and a T-slot. The connecting base is fixedly installed on the slide table and is arranged along the front-back direction. The T-slot is formed on the upper surface of the connecting base.

[0011] In the above technical solution, the cross-sectional shape of the T-shaped groove is set to T-shape.

[0012] In the above technical solution, the initial linear adjustment component further includes: a square-headed bolt and a first positioning nut. There are two square-headed bolts, and the two square-headed bolts are threaded through the outer wall of the adjustment platform in the vertical direction, and the bottom end of the square-headed bolt is slidably embedded in the inner cavity of the T-shaped groove; the first positioning nut is threadedly sleeved on the top end of the square-headed bolt.

[0013] In the above technical solution, the shape of the bottom end of the square head bolt is adapted to the shape of the inner cavity of the T-shaped groove.

[0014] The printing platform for a 3D printer according to this utility model has the following advantages compared with the prior art:

[0015] I. In view of the technical problem that existing printing platforms can only have linear forward and backward displacement and lack tilt angle adjustment function, thus making them unable to adapt to the printing of 3D models with tilted bottom surfaces, this utility model enables the printing platform to have the ability to adjust the tilt angle in the forward and backward direction. This adjustment function can adaptively adjust the posture of the printing platform according to the tilt angle of the bottom surface of the 3D model, ensuring that the printing surface and the bottom surface of the model are accurately aligned. This effectively solves problems such as suspended printing, complex support structures and printing failures, and significantly improves the equipment's adaptability to the processing of irregular structural parts and process compatibility.

[0016] II. This utility model achieves linear movement of the printing platform in the front-to-back direction through the coordinated displacement of the slide and the connecting platform. At the same time, with the help of components such as square head bolts, first positioning nuts, and T-slots, the initial position of the adjustment platform relative to the connecting platform can be linearly adjusted in the front-to-back direction. This design can not only adjust the initial positioning of the printing platform or move it linearly in real time according to the model printing requirements, but also expand the displacement adjustment range of the printing platform in the front-to-back direction through dual-function linkage, thereby realizing flexible adjustment of the printing position.

[0017] Third, this utility model constructs a degree-of-freedom constraint system through the precise cooperation of core components such as long bolts, second positioning nuts, and arc-shaped slides. When the rotating seat and the printing platform have completed the forward and backward tilt angle adjustment relative to the adjustment table, the mechanism can immediately form a rigid limit. Through the fastening of the long bolts and the second positioning nuts, the adjusted tilt posture is reliably locked. This setting not only realizes the flexible adjustment of the printing platform at multiple angles, but also ensures that the posture remains stable during the printing process, effectively meeting the dual requirements of high-precision 3D printing for platform angle adjustment and positioning.

[0018] IV. This utility model achieves synchronous locking of the rotating seat in the two sets of arc-shaped slides by setting up a rotating seat and two sets of arc-shaped slides, in conjunction with long bolts and a second positioning nut. Multi-point constraints can be formed with a single operation. While ensuring the stability of the connection between the rotating seat and the adjustment table, it avoids the redundant operation process of the traditional independent locking method, significantly simplifies the positioning process after the tilt angle of the rotating seat and the printing platform is adjusted, and effectively improves the operating efficiency and positioning reliability of the equipment.

[0019] In summary, the tilt adjustment function of this invention enables the printing platform to adaptively adjust its posture according to the tilt of the model's bottom surface, solving the problems of suspended printing and complex support structures, and significantly enhancing the processing capability of irregularly shaped parts; the dual-mode linear displacement system achieves coordinated control of initial positioning and real-time movement, expanding the displacement range and flexibly adjusting the printing position; rigid limiting ensures stable tilt posture, meeting the requirements of high-precision printing; the synchronous locking structure achieves multi-point constraint through single-point operation, simplifying the positioning process and improving operational efficiency and connection reliability. All of the above features together enable the equipment to achieve efficient and accurate 3D printing operations in complex application scenarios, comprehensively improving the performance and applicability of 3D printing equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the printing platform of this utility model;

[0021] Figure 2 This is a front view of the base of this utility model;

[0022] Figure 3 This is an exploded view of the printing platform, rotating seat, adjusting table, connecting table, and other components of this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the connecting platform of this utility model;

[0024] Figures 1 to 4 In the middle, 1. 3D printer body, 2. printing platform, 3. base, 4. motor, 5. slide, 6. lead screw, 7. slide table, 8. connecting base, 9. T-slot, 10. square head bolt, 11. first positioning nut, 12. adjustment table, 13. arc slide, 14. rotating shaft, 15. rotating seat, 16. long bolt, 17. second positioning nut. Detailed Implementation

[0025] The following are specific implementation cases and appendices. Figures 1 to 4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0026] A printing platform for a 3D printer includes a 3D printer body 1 and a printing platform 2. In this application, the 3D printer body 1 is prior art, which includes a printing nozzle, a printing platform 2, a motion system, a control system, a heating system, and a consumable supply system. Through the coordinated action of the above systems, the model can be printed on the printing platform 2. The 3D printer body 1 and its printing process are prior art, and it can use a commercially available model that can achieve the model printing function. The printing platform 2 can also use a commercially available platform, and its material type and other properties can meet the requirements. The prior art is not described in detail or limited here. The printing platform 2 is set above the 3D printer body 1 and also includes a tilt adjustment component, which includes: a rotating base 15, a rotating shaft 14, and an adjustment mechanism. The printing platform 2 is fixedly mounted on the middle of the lower surface of the printing platform 2, and the rotating seat 15 is U-shaped. There are two rotating shafts 14, which are rotatably connected to the left and right sides of the bottom of the rotating seat 15, and the two rotating shafts 14 are coaxially arranged in the horizontal direction. The adjusting platform 12 is located inside the rotating seat 15 and is U-shaped. There are two curved slides 13, which are respectively opened on the left and right side walls of the adjusting platform 12. The long bolt 16 passes through the inner cavity of the two curved slides 13 and the right side wall of the rotating seat 15 from the left side wall of the adjusting platform 12 to the right side, and the long bolt 16 is threaded to the right side wall of the rotating seat 15. The second positioning nut 17 is threaded on the right end of the long bolt 16.

[0027] When the tilt angle of the printing platform 2 needs to be adjusted in the forward and backward directions to adapt to the printing requirements of the tilted bottom model, firstly, the second positioning nut 17 is unscrewed from the outer wall of the long bolt 16 to release the locking constraint between the rotating seat 15 and the adjusting table 12. At this time, the printing platform 2 and the rotating seat 15 can be driven to rotate forward or backward around the pivot axis. This action will drive the rotating shaft 14 to rotate synchronously relative to the adjusting table 12. At the same time, the rotation of the rotating seat 15 will guide the long bolt 16 to slide along a preset trajectory in the inner cavity of the two sets of arc-shaped slides 13 to compensate for the displacement difference caused by the angle change. After adjusting to the target angle, the second positioning nut 17 is screwed back into the long bolt 16 and tightened to make it fit tightly against the side wall of the rotating seat 15. The friction torque is used to achieve rigid locking between the adjusting table 12 and the rotating seat 15. In this state, the rotating seat 15 and the printing platform 2 maintain a stable tilt posture, providing reliable support for the high-precision printing of the tilted bottom model.

[0028] This invention provides the printing platform 2 with a tilt angle adjustment function in the front and rear directions. This function can automatically adapt and adjust the posture of the printing platform 2 according to the tilt angle of the bottom surface of the 3D model, so as to achieve precise fitting between the printing surface and the bottom surface of the model. It effectively overcomes technical problems such as suspended printing, complex support structure and printing failure, and greatly improves the equipment's adaptability to the processing of irregular structural parts and its process compatibility.

[0029] This utility model features a rotating seat 15 and two sets of arc-shaped slides 13, along with long bolts 16 and a second positioning nut 17, achieving synchronous locking of the rotating seat 15 in the mounting positions of the two sets of arc-shaped slides 13. This design can form a multi-point constraint structure with a single operation, ensuring the stable connection between the rotating seat 15 and the adjusting platform 12 while eliminating the cumbersome process of traditional independent locking methods. It significantly simplifies the positioning process after adjusting the tilt angle of the rotating seat 15 and the printing platform 2, effectively improving the operating efficiency and positioning reliability of the equipment.

[0030] This invention constructs a freedom constraint system through the precise cooperation of components such as the long bolt 16, the second positioning nut 17, and the arc-shaped slide rail 13. After the rotating seat 15 and the printing platform 2 have completed their forward and backward tilt angle adjustment relative to the adjusting table 12, the system immediately forms a rigid limit. With the tightening action of the long bolt 16 and the second positioning nut 17, the adjusted tilt posture is reliably locked. This design not only enables flexible multi-angle adjustment of the printing platform 2 but also ensures its stable posture during printing, effectively meeting the dual requirements of high-precision 3D printing for platform angle adjustment and positioning.

[0031] It is worth noting that the long bolt 16 is a commercially available type of long bolt. Under the locking action of the second positioning nut 17, a stable lock can be achieved between the adjusting platform 12 and the rotating seat 15. That is, with the limiting effect of the long bolt 16 and the second positioning nut 17, the stability of the rotating seat 15 relative to the adjusting platform 12 can be guaranteed. This is existing technology. The locking force of the second positioning nut 17 at the long bolt 16 can completely overcome the gravity effect of the inclined setting of the printing platform 2 and other components. That is, it can ensure that the printing platform 2 and other components in the inclined state remain stable. The setting of the long bolt 16 and the second positioning nut 17 is sufficient to meet the usage requirements, and will not be elaborated or limited here.

[0032] Main references Figure 3 As shown, the center of the path of the arc-shaped slide 13 is located on the same horizontal axis as the center point of the rotating shaft 14. This ensures that when the rotating seat 15 rotates around the rotating shaft 14, the long bolt 16 can be displaced in the corresponding direction along the trajectory of the arc-shaped slide 13. This ensures that the long bolt 16 and the second positioning nut 17 can still effectively lock the rotating seat 15 and the adjusting table 12 after the adjustment position is adjusted.

[0033] Main references Figure 3 and Figure 4 As shown, the 3D printer body 1 is equipped with a single-axis drive system, which includes: a base 3, a motor 4, a slide 5, a lead screw 6, and a slide 7. The base 3 is fixedly installed on the 3D printer body 1 in the front-to-back direction; the motor 4 is installed on the rear side wall of the base 3; the slide 5 is formed on the upper surface of the base 3 in the front-to-back direction; the lead screw 6 is rotatably connected to the inner cavity of the slide 5, and the lead screw 6 is connected to the output end of the motor 4; the slide 7 is threaded onto the lead screw 6, and the slide 7 is slidably embedded in the inner cavity of the slide 5; under the action of the motor 4, the lead screw 6 can drive the slide 7 on the outer wall to move in the front-to-back direction along the slide 5, thereby realizing the single-axis displacement of the printing platform 2 in the front-to-back direction by the slide 7. Motor 4 is a commercially available self-locking motor with a locking output end. When stopped, its output end is self-locking and will not rotate under external force. Motor 4 is also a commercially available forward / reverse motor, allowing its output end to rotate in either direction as needed, thus meeting the aforementioned usage requirements. Lead screw 6 is a commercially available self-locking lead screw. When stopped, it is self-locking and will not rotate under external force. This is existing technology, and no specific model limitations or further details are provided for these existing components.

[0034] Main references Figure 3 and Figure 4 As shown, the slide table 7 is equipped with an initial linear adjustment assembly, which includes a connecting base 8 and a T-slot 9. The connecting base 8 is fixedly installed on the slide table 7 and is arranged along the front-to-back direction. The T-slot 9 is formed on the upper surface of the connecting base 8. The cross-sectional shape of the T-slot 9 is T-shaped. The bottom shape of the square head bolt 10 is adapted to the inner cavity shape of the T-slot 9, thereby ensuring that the square head bolt 10 slides and is embedded in the inner cavity of the T-slot 9, achieving a stable connection between the bottom of the square head bolt 10 and the inner cavity of the T-slot 9.

[0035] Main references Figure 3 As shown, the initial linear adjustment assembly also includes: a square head bolt 10 and a first positioning nut 11. There are two square head bolts 10, and the two square head bolts 10 are threaded through the outer wall of the adjustment table 12 in the vertical direction, and the bottom end of the square head bolt 10 is slidably embedded in the inner cavity of the T-shaped groove 9; the first positioning nut 11 is threaded on the top end of the square head bolt 10.

[0036] When it is necessary to adjust the initial position of the printing platform 2 relative to the 3D printer body 1, firstly, unscrew the first positioning nut 11 from the outer wall of the square head bolt 10 to release the limiting constraint between the adjusting platform 12 and the connecting base 8. At this time, the adjusting platform 12 can move linearly back and forth along the upper surface of the connecting base 8. This displacement is mechanically transmitted to make the bottom end of the square head bolt 10 slide back and forth synchronously in the inner cavity of the T-slot 9, thereby achieving precise adjustment of the initial position of the printing platform 2 relative to the connecting base 8. After the adjustment is completed, follow the aforementioned steps to screw the first positioning nut 11 back into the outer wall of the square head bolt 10 and tighten it to the inner wall of the adjusting platform 12. A rigid connection is formed through thread engagement to ensure that the adjusting platform 12 and the connecting base 8 are firmly connected and the adjusted position is locked.

[0037] This invention achieves composite displacement control of the printing platform 2 in the front-to-back direction. Specifically, through the coordinated action of the slide 7 and the connecting base 8, the printing platform 2 can be driven to achieve continuous linear motion. Simultaneously, using a positioning adjustment mechanism composed of a square-headed bolt 10, a first positioning nut 11, and a T-slot 9, the initial position of the adjusting platform 12 relative to the connecting base 8 can be precisely adjusted. This design organically combines dynamic displacement and static positioning functions, satisfying the real-time position adjustment requirements during model printing, and significantly expanding the effective travel range of the printing platform 2 in the front-to-back direction through dual-mode linkage, providing more flexible spatial allocation capabilities for printing complex structural parts.

[0038] The working principle of a printing platform for a 3D printer in this embodiment is as follows:

[0039] When adjusting the tilt angle of the printing platform 2 in the front-to-back direction to adapt to the printing requirements of the model with a tilted bottom, the second positioning nut 17 is unscrewed from the outer wall of the long bolt 16 to release the locking state of the relative position of the rotating seat 15 and the adjusting table 12. At this time, rotating the printing platform 2 and the rotating seat 15 forward or backward will cause the rotating seat 15 to rotate relative to the adjusting table 12. At the same time, the rotating seat 15 will cause the long bolt 16 to slide along the inner cavity of the two sets of arc-shaped slides 13. After adjustment, the second positioning nut 17 is screwed back into the outer wall of the long bolt 16 and the second positioning nut 17 is tightly fitted and locked to the side wall of the rotating seat 15 to lock the relative position of the adjusting table 12 and the rotating seat 15. In this state, the rotating seat 15 and the printing platform 2 are in a stable locked state after tilt adjustment.

[0040] Additionally, when it is necessary to adjust the initial position of the printing platform 2 relative to the overall position of the 3D printer body 1, the first positioning nut 11 is unscrewed from the outer wall of the square head bolt 10. At this time, the adjusting table 12 is disengaged from the connecting base 8. The adjusting table 12 is moved back and forth along the upper surface of the connecting base 8, causing the bottom end of the square head bolt 10 to move back and forth along the inner cavity of the T-slot 9, thereby adjusting the initial position of the printing platform 2 relative to the connecting base 8. After adjustment, the first positioning nut 11 is screwed back into the outer wall of the square head bolt 10 and locked tightly in the inner wall of the adjusting table 12, so as to achieve a stable connection between the adjusted table 12 and the connecting base 8.

[0041] After adjusting the front and rear positions, the adjustment platform 12 and the printing platform 2, under the action of the activated motor 4, can drive the lead screw 6 to move the slide 7 on the outer wall along the slide groove 5 in the front and rear direction. If the printing platform 2 is adjusted to move forward from the initial position, it can achieve a more forward printing support relative to the 3D printer body 1. If the printing platform 2 is adjusted to move backward from the initial position, it can achieve a more backward printing support relative to the 3D printer body 1, thereby expanding the support range of the printing platform 2 for the 3D printer body 1 when printing models, and flexibly meeting the printing support needs of models of different sizes.

[0042] This invention's tilt adjustment function enables the printing platform to adaptively adjust its posture according to the tilt of the model's bottom surface, solving the problems of suspended printing and complex support structures, and significantly enhancing the processing capability of irregularly shaped parts. The dual-mode linear displacement system achieves coordinated control of initial positioning and real-time movement, expanding the displacement range and flexibly adjusting the printing position. Rigid limits ensure stable tilt posture, meeting the requirements of high-precision printing. The synchronous locking structure achieves multi-point constraints through single-point operation, simplifying the positioning process and improving operational efficiency and connection reliability. All of these features work together to enable the equipment to achieve efficient and accurate 3D printing operations in complex application scenarios, comprehensively improving the performance and applicability of 3D printing equipment.

[0043] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0044] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0045] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0046] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0047] Unless otherwise stated, the term "multiple" means two or more.

[0048] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0049] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A printing platform for a 3D printer, comprising a 3D printer body (1) and a printing platform (2), wherein the printing platform (2) is disposed above the 3D printer body (1), characterized in that: It also includes a tilt adjustment assembly, the tilt adjustment assembly comprising: Rotary seat (15), the rotating seat (15) is fixedly installed in the middle of the lower surface of the printing platform (2), and the rotating seat (15) is U-shaped; Two rotating shafts (14) are provided, and the two rotating shafts (14) are respectively rotatably connected to the left and right sides of the bottom end of the rotating seat (15); An adjustment platform (12) is provided inside the rotating seat (15), and the adjustment platform (12) is U-shaped; Arc-shaped slide (13), two arc-shaped slides (13) are provided, and the two arc-shaped slides (13) are respectively opened on the left and right side walls of the adjustment platform (12); Long bolt (16) passes through the inner cavity of the two arc-shaped slides (13) and the right side wall of the rotating seat (15) from the left side wall of the adjusting table (12) to the right side, and the long bolt (16) is threadedly connected to the right side wall of the rotating seat (15). The second positioning nut (17) is threaded onto the right end of the long bolt (16).

2. The printing platform for a 3D printer according to claim 1, characterized in that: The two rotating shafts (14) are coaxially arranged in the horizontal direction.

3. The printing platform for a 3D printer according to claim 1, characterized in that: The center of the path of the arc-shaped slide (13) is located on the same horizontal axis as the center point of the rotating shaft (14).

4. A printing platform for a 3D printer according to claim 1, characterized in that: The 3D printer body (1) is provided with a single-axis drive system, which includes: The base (3) is fixedly installed on the 3D printer body (1) in the front-to-back direction; Motor (4), the motor (4) is mounted on the rear side wall of the base (3); Slide groove (5), the slide groove (5) is opened on the upper surface of the base (3) in the front-back direction; A lead screw (6) is rotatably connected to the inner cavity of the slide groove (5), and the lead screw (6) is connected to the output end of the motor (4); The slide (7) is threaded onto the lead screw (6) and slides inside the groove (5).

5. A printing platform for a 3D printer according to claim 4, characterized in that: The slide (7) is provided with an initial linear adjustment component, which includes: A connecting base (8) is fixedly installed on the slide (7), and the connecting base (8) is arranged in the front-back direction; T-groove (9), the T-groove (9) is formed on the upper surface of the connecting base (8).

6. A printing platform for a 3D printer according to claim 5, characterized in that: The cross-sectional shape of the T-groove (9) is set to T-shape.

7. A printing platform for a 3D printer according to claim 5, characterized in that: The initial linear adjustment component further includes: Square head bolts (10), two square head bolts (10) are provided, and the two square head bolts (10) are threaded through the outer wall of the adjusting table (12) in the vertical direction, and the bottom end of the square head bolts (10) is slidably embedded in the inner cavity of the T-shaped groove (9); The first positioning nut (11) is threaded onto the top of the square head bolt (10).

8. A printing platform for a 3D printer according to claim 7, characterized in that: The bottom shape of the square head bolt (10) is adapted to the inner cavity shape of the T-groove (9).

Images