A 3D printing platform with high stability

Abstract

The present invention provides a 3D printing platform with high stability, comprising: a cantilever adapter, a locking device, a platform body, and a guide plate; three orthogonal planes are provided at the front end of the cantilever adapter as a support surface, and the platform body is provided with a veneer corresponding to the support surface; the fixed end of the locking device is connected to the cantilever adapter, and the hook end of the locking device is hung on the hook position of the platform body so that the support surface and the veneer are aligned, and the surface-to-surface contact retention is best compared to point-to-surface contact or line-to-surface contact. The cooperation of the orthogonal mechanical support surfaces can enable the printing platform to have high repeatability positioning accuracy. The stability of the printing platform during the printing process and the consistency of positioning after disassembly and assembly are ensured, thereby achieving the purpose of high-precision mechanical connection, and further enabling the light-curing 3D printer to have the advantages of stable operation and good locking performance during the molding process.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing equipment, and in particular relates to a 3D printing platform with high stability. Background Art

[0002] With the rapid development of 3D printing technology, its industrial applications are increasing, and photocuring 3D molding is becoming more and more mature. Among them, the molding principle of photocuring 3D printing is to solidify and stack the materials layer by layer. Generally, the ultraviolet light source used for curing is projected from bottom to top, and the molded workpiece is stacked layer by layer from top to bottom on the lower surface of the printing platform. In actual use, the printing platform often needs to be quickly removed and reinstalled. However, the printing platform in the existing technology is usually fixed by bolts or screws, which is inconvenient to disassemble. Each disassembly takes a lot of time, resulting in low printing efficiency. In addition, frequent disassembly makes it difficult to maintain the accuracy of the printing platform, and it is easy to have problems such as misalignment, looseness, and unreliability, which affects the printing accuracy. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a 3D printing platform with high stability.

[0004] To provide a basic understanding of some aspects of the disclosed embodiments, the following is a brief summary. This summary is not intended to be a comprehensive review, identify key or essential elements, or delineate the scope of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the detailed description that follows.

[0005] The present invention adopts the following technical solutions:

[0006] In some optional embodiments, a 3D printing platform with high stability is provided, comprising: a cantilever adapter, a locking device and a platform body; three orthogonal planes are set at the front end of the cantilever adapter as a support surface, and the platform body is provided with a veneer corresponding to the support surface; the fixed end of the locking device is connected to the cantilever adapter, and the hook end of the locking device is hung on the hook position of the platform body, so that the support surface is fitted with the veneer.

[0007] In some optional embodiments, a V-shaped notch is provided at the front end of the cantilever adapter to form two mutually perpendicular mating mounting surfaces, and a hanging protrusion is also provided at the front end of the cantilever adapter, and the bottom surface of the hanging protrusion and the two mating mounting surfaces constitute three orthogonal planes as the support surface.

[0008] In some optional embodiments, a triangular protrusion adapted to the V-shaped notch is provided on the side of the platform body facing the cantilever adapter; trapezoidal grooves are provided on both sides of the platform body, and the bottom groove surface of the trapezoidal groove and the two side surfaces of the triangular protrusion form three orthogonal planes as the veneer; the cantilever protrusion is trapezoidal and adapted to the trapezoidal groove.

[0009] In some optional embodiments, a hanging groove is provided on the platform body, and the hanging buckle position is located in the hanging groove; the hanging buckle end of the locking device includes: a flip rod and a main body rod, one end of the flip rod is connected to the fixed end shaft of the locking device, and the other end is connected to the main body rod, and the end of the main body rod is bent toward the side facing the hanging groove to form a hanging buckle; an externally threaded cylindrical pin adapted to the hanging buckle is provided in the hanging groove to form the hanging buckle position.

[0010] In some optional embodiments, the locking device further includes: a snap-fit ​​fixing platform provided on the cantilever adapter; a 45° mounting inclined surface is provided on the snap-fit ​​fixing platform, and the fixed end of the locking device is fixed to the 45° mounting inclined surface by a bolt.

[0011] In some optional embodiments, the printing platform further includes: a guide plate; the cantilever adapter is arranged on the guide plate; a threaded column hole is opened on the guide plate, and the guide plate is connected to the transmission mechanism through the threaded column hole.

[0012] In some optional embodiments, the 3D printing platform with high stability further includes: a main structure; the main structure includes: a box body and a back plate and an upper plate arranged on the box body; the guide plate is installed on the back plate through a linear guide rail, and the transmission mechanism includes: a screw and a motor that drives the screw to rotate, and the guide plate is mounted on the screw through the threaded column hole.

[0013] The beneficial effects brought by the present invention are as follows: by designing three orthogonal planes as mechanical support surfaces, the connecting parts are pressed against the support surfaces through a locking device, thereby ensuring the stability of the printing platform during printing and the consistency of positioning after disassembly and assembly, thereby achieving the purpose of high-precision mechanical connection, and can solve the problem of maintaining the accuracy of rapid disassembly and assembly of the 3D printing platform, reduce the workpiece molding error caused by the repeated positioning accuracy of the 3D printing platform, have very high installation stability and high repeated installation accuracy, and further enable the light-curing 3D printer to have the advantages of stable operation and good locking performance during the molding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 3D printer to which the 3D printing platform of the present invention is applied;

[0015] Figure 2 It is a structural schematic diagram of the 3D printing platform of the present invention;

[0016] Figure 3 It is a schematic diagram of the exploded structure of the 3D printing platform of the present invention;

[0017] Figure 4 It is a schematic diagram of the location of the hooking slot of the platform body of the present invention;

[0018] Figure 5 is a schematic diagram of the locking device of the present invention applying tension;

[0019] Figure 6 It is a schematic diagram of the main structure of the present invention;

[0020] Figure 7 is a schematic diagram of the projection system. DETAILED DESCRIPTION

[0021] The following description and accompanying drawings fully illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process and other changes. The examples represent only possible variations. Unless clearly required, separate components and functions are optional, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments.

[0022] In some illustrative embodiments, Figure 1 As shown, the 3D printing platform with high stability proposed by the present invention is applied to a 3D printer as a printing platform 200. The 3D printer includes: a projection system 100, a scraping mechanism 400, a material box 300 and the printing platform 200 of the present invention.

[0023] The projection system 100 is used to generate an ultraviolet beam for curing the slurry. Figure 1 and 7 As shown, the projection system 100 includes a digital projector 101 and an optical machine bracket 102. The digital projector 101 is positioned below the optical glass in the cartridge 300 via the optical machine bracket 102. With its lens facing upward, the digital projector 101 projects light onto the optical glass from bottom to top, curing the slurry on the optical glass. The digital projector 101 of the present invention utilizes a DLP projector, whose screen flashes a single image of each layer across the entire printing platform 200. Because the DLP projector is a digital screen, each layer consists of square pixels, resulting in higher printing resolution.

[0024] The printing platform 200 is used to fix the molded parts in the process of ceramic light curing molding and provide a printing table for 3D printing. Figure 1 、 2As shown in Figures 3 and 4, the printing platform 200 includes a cantilever adapter 201, a locking device 202, a platform body 203, a guide plate 204, and a main structure 500. The bottom surface of the platform body 203 serves as the printing surface of the printing platform 200. The locking device 202 is used to secure the platform body 203 to the cantilever adapter 201. Three orthogonal planes are provided at the front end of the cantilever adapter 201 as a rest surface 205. The platform body 203 is provided with a corresponding surface to the rest surface 205. When the platform body 203 is secured to the cantilever adapter 201, the rest surface 205 and the surface are aligned. The platform body 203 uses three orthogonal planes as mechanical rest surfaces to mate with the end of the cantilever adapter 201 that has the same mechanical rest surface. Because surface-to-surface contact provides better retention than point-to-surface or line-to-surface contact, the orthogonal mechanical rest surfaces enable the printing platform to achieve high repeatability.

[0025] The locking device fixed end 207 is connected to the cantilever adapter 201, and the locking device hook end 208 is hung on the hook position of the platform body 203, thereby fixing the platform body 203 on the cantilever adapter 201. The locking device hook end 208 includes: a flip rod 209 and a main rod 210. One end of the flip rod 209 is connected to the locking device fixed end 207 axis, and the other end is connected to the main rod 210, so that the locking device hook end 208 can be flipped on the locking device fixed end 207, which is convenient for installing and removing the platform body 203. Figure 4 As shown, the platform body 203 is provided with a mounting slot 211, and the hook position is located within the mounting slot 211. Specifically, an externally threaded cylindrical pin 212 is provided within the mounting slot 211 to form the hook position. The externally threaded cylindrical pin 212 is screwed into the side of the platform body 203. The end of the main rod 210 is bent toward the side facing the mounting slot 211 to form a hook 213 that is compatible with the externally threaded cylindrical pin 212. The hook 213 can hook the externally threaded cylindrical pin 212, thereby securing the platform body 203 to the cantilever adapter 201. The structure is rational, simple, and stable, and the operation is simple, making it easy to remove and install the platform body 203 and improving printing efficiency. Furthermore, while the printing platform has high repeatability and high-stability locking functions, it also makes disassembly and installation more convenient.

[0026] The locking device 202 is made of alloy tool steel, which makes the locking device 202 have a certain toughness and reduces damage caused by fatigue strength.

[0027] The locking device 202 locks the mated platform body 203 and the cantilever adapter 201, limiting the six degrees of freedom of the platform body 203. The combination of three orthogonal mechanical surfaces and the locking device 202 ensures that the platform body 203 is locked with high stability during operation.

[0028] The front end of the cantilever adapter 201 defines a V-shaped notch 216, forming two mutually perpendicular mating mounting surfaces 217. A protruding block 218 is also provided at the front end of the cantilever adapter 201. The bottom surface of the protruding block 218 and the two mating mounting surfaces 217 form three orthogonal planes that serve as the resting surface 205. In other words, the three planes, the two mating mounting surfaces 217 and the bottom surface of the protruding block 218, are mutually perpendicular. The platform body 203 has a triangular protrusion 219 on the side facing the cantilever adapter 201 that mates with the V-shaped notch 216. When the platform body 203 is secured to the cantilever adapter 201, the triangular protrusion 219 fits within the V-shaped notch 216, completely fitting within it. Trapezoidal grooves 220 are defined on both sides of the platform body 203. The bottom groove surface 221 of the trapezoidal groove 220 and the two side surfaces of the triangular protrusion 219 form three orthogonal planes that serve as cladding. Specifically, the two side surfaces of the triangular protrusion 219 and the bottom groove surface 221 of the trapezoidal groove 220 are perpendicular to each other. The overhanging protrusion 218 is trapezoidal and fits perfectly within the trapezoidal groove 220. When the platform body 203 is secured to the cantilever adapter 201, the overhanging protrusion 218 fits within the trapezoidal groove 220, completely fitting within the groove. This ensures a tight connection between the platform body 203 and the cantilever adapter 201, preventing loosening of the connection between the platform body 203 and the cantilever adapter 201 due to frequent disassembly of the platform body 203. The connection is strong and repeatable, and the overall structure is more stable.

[0029] The locking device 202 further includes: a buckle fixing platform 214 provided on the cantilever adapter 201. The buckle fixing platform 214 is provided with a 45° mounting inclined surface 215, and the fixing end 207 of the locking device is fixed to the 45° mounting inclined surface 215 by bolts. Figure 5 As shown, since the printing platform 200 adopts three-sided positioning, a pulling force at an angle of 45° upward is applied to the external threaded cylindrical pin 212 through the hook end 208 of the locking device at a 45° angle to the horizontal plane. The horizontal and vertical components of the pulling force F respectively make the supporting surface 205 fit tightly with the veneer, that is, the vertical component F1 of the pulling force F is perpendicular to the bottom surface of the overhanging block 218, and the two components of the horizontal component F2 of the pulling force F are respectively perpendicular to the two mating mounting surfaces 217, so that the present invention achieves a higher locking effect, has a higher degree of stability, and fits more tightly.

[0030] The cantilever adapter 201 is mounted on a guide plate 204. A threaded hole 222 is defined in the guide plate 204, which connects to the transmission mechanism via the threaded hole 222. The transmission mechanism is mounted on the main structure 500. The printing platform 200 is reciprocated up and down on the main structure 500 via the transmission mechanism, allowing the cured material to adhere to the bottom of the printing platform and form a stacked product. The digital projector 101 solidifies the 3D printed product on the lower surface of the printing platform 200, forming the product from top to bottom.

[0031] like Figure 6 As shown, the main structure 500 includes: a back plate 501, an upper plate 502 and a box body 503. The upper plate 502 is arranged on the top of the box body 503, and the back plate 501 is arranged on the upper surface of the upper plate 502. The back plate 501 is perpendicular to the upper plate 502.

[0032] The back plate 501 and the upper plate 502 are made of aluminum and are lightweight. The housing 503 is made of sheet metal and is used to carry electrical components and provide sufficient height and space for the projection system 100, maintaining overall structural stability and reducing the impact of mechanical resonance during printing.

[0033] The guide plate 204 of the printing platform 200 is mounted on the back plate 501 via linear guides, and the printing platform 200 is moved up and down on the back plate 501 via the linear guides. The printing platform 200 is mounted on the main structure 500 via a transmission mechanism. The transmission mechanism includes a screw 504 and a motor that drives the screw. The guide plate 204 is mounted on the screw 504 via a threaded column hole 222. When the motor drives the screw to rotate forward or reverse, the guide plate 204 moves back and forth along the linear guides. Using two sets of linear guides and screws, the printing platform 200 reciprocates within the print chamber of the material cartridge 300 along the linear guides, allowing the cured material to adhere to the bottom of the printing platform 200 and form a stacked shape. The guide plate 204 acts like the ball in a ball screw, converting rotational motion into linear motion.

[0034] A scale 505 is installed on the right side of the backplate 501. This scale detects and controls the position of the cantilever adapter 201, ensuring consistent layer thickness. Mechanical limiters 506 are located on the left side of the backplate 501, one above and one below. A photoelectric switch is installed between the two mechanical limiters 506 to assist the scale 505 in position monitoring. This ensures high reliability during printer operation and prevents the print platform 200 from damaging the optical glass at the bottom of the cartridge 300.

[0035] The scraping mechanism 400 is threadedly secured to the upper plate 502, while the projection system 100 is housed within a housing 503. The upper plate 502 defines a circular hollowed-out slot 507, within which the cartridge 300 resides. The projection system 100 is positioned below the optical glass, projecting upwards. As the printing platform 200 gradually rises, the scraping mechanism 400 completes its scraping. The light beam emitted by the projection system 100 passes through the optical glass within the cartridge 300, solidifying the slurry on the upper surface of the optical glass layer by layer onto the printing surface of the printing platform 200.

[0036] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein may be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps described above are generally described around their functions. Whether such functions are implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system. A skilled person may implement the described functions in an adaptable manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of this disclosure.

Claims

1. A 3D printing platform with high stability, characterized in that: include: A cantilever adapter, a locking device, and a platform body; the front end of the cantilever adapter is provided with three orthogonal planes as a rest surface, and the platform body is provided with a veneer corresponding to the rest surface; the fixed end of the locking device is connected to the cantilever adapter, and the hook end of the locking device is hung on the hook position of the platform body, so that the rest surface and the veneer are in contact with each other; It also includes: a main structure; the main structure includes: a box and a back plate and an upper plate arranged on the box; a grating ruler is arranged on the right side of the back plate, and the position of the cantilever adapter is detected and controlled by the grating ruler; there is a mechanical limit on the upper and lower left sides of the back plate, and a photoelectric switch is installed between the two mechanical limits to assist the grating ruler in position monitoring.

2. A 3D printing platform with high stability according to claim 1, characterized in that: A V-shaped notch is provided at the front end of the cantilever adapter to form two mutually perpendicular mating mounting surfaces. A hanging protrusion is also provided at the front end of the cantilever adapter. The bottom surface of the hanging protrusion and the two mating mounting surfaces form three orthogonal planes as the leaning surface.

3. A 3D printing platform with high stability according to claim 2, characterized in that: The platform body is provided with a triangular protrusion adapted to the V-shaped notch on the side facing the cantilever adapter; trapezoidal grooves are provided on both sides of the platform body, and the bottom groove surface of the trapezoidal groove and the two side surfaces of the triangular protrusion form three orthogonal planes as the veneer; the cantilever protrusion is trapezoidal and adapted to the trapezoidal groove.

4. A 3D printing platform with high stability according to claim 3, characterized in that: A hanging groove is provided on the platform body, and the hanging buckle position is located in the hanging groove; the hanging buckle end of the locking device includes: a flip rod and a main body rod, one end of the flip rod is connected to the fixed end shaft of the locking device, and the other end is connected to the main body rod, and the end of the main body rod is bent toward the side facing the hanging groove to form a hanging buckle; an externally threaded cylindrical pin adapted to the hanging buckle is provided in the hanging groove to form the hanging buckle position.

5. The 3D printing platform with high stability according to claim 4, characterized in that: The locking device also includes: a snap-fit ​​fixing platform provided on the cantilever adapter; a 45° installation inclined surface is provided on the snap-fit ​​fixing platform, and the fixed end of the locking device is fixed to the 45° installation inclined surface by a bolt.

6. The 3D printing platform with high stability according to claim 5, characterized in that: The printing platform further includes: a guide plate; the cantilever adapter is arranged on the guide plate; a threaded column hole is provided on the guide plate, and the guide plate is connected to the transmission mechanism through the threaded column hole.

7. The 3D printing platform with high stability according to claim 6, characterized in that: The guide plate is mounted on the back plate via a linear guide rail. The transmission mechanism comprises a screw and a motor for driving the screw to rotate. The guide plate is sleeved on the screw via the threaded column hole.

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