CN218315255U

CN218315255U - High accuracy 3D printer

Info

Publication number: CN218315255U
Application number: CN202222544918.5U
Authority: CN
Inventors: 陈剑飞; 吴涛; 王曼; 陈生龙; 杨潘; 谢晨曦; 李建军
Original assignee: Wuhan Pilot 3d Technology Co ltd
Current assignee: Wuhan Pilot 3d Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-01-17
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to a high accuracy 3D printer, including printer body, workstation and laser system, workstation upper portion is equipped with the resin silo, resin silo one side is equipped with the print platform who goes up and down in the resin silo by elevating system control, resin silo one side is equipped with floating mechanism, floating mechanism includes first lead screw and second lead screw by first driving motor and second driving motor driven, the first nut lower part of first lead screw is equipped with first connecting block, the second nut lower part of second lead screw is equipped with the second connecting block, the one end of the rotation axis that the output of the third driving motor that first connecting block one side set up is connected rotates with the second connecting block and is connected, the outside cover of rotation axis is equipped with the roller for roll floating undulant photosensitive resin. The utility model discloses can be floating with undulant photosensitive resin, keep the resin to print the horizontality on layer, improve the printing precision of 3D printer.

Description

High accuracy 3D printer

Technical Field

The utility model relates to a 3D printer technical field especially relates to a high accuracy 3D printer.

Background

The 3D printer is also called a three-dimensional printer, which is a printing apparatus that constructs a three-dimensional entity by using a rapid prototyping technique, based on a digital model file, using a modeling material, and by printing layer by layer. With the rapid development of 3D printing technology, 3D printers are widely used in the fields of industry, medical treatment, teaching, aerospace, etc., and the basic principle of 3D printing is layered processing and superposition forming, that is, a 3D entity is generated by adding materials layer by layer. Mainstream technologies of the 3D printing technology include a stereo photo-curing technology (SLA), fused Deposition Modeling (FDM), a selective laser melting technology (SLM), a digital light processing technology (DLP), three-dimensional printing, bonding molding (3 DP), and the like.

The laser scanning head is controlled precisely, and the laser irradiates photosensitive resin to cure and form the photosensitive resin layer by layer, so that the high-speed and high-precision forming of parts can be realized. During specific work, pour photosensitive resin into the resin tank in advance, fix the resin tank on the workstation, print platform's continuous layer structure sinks into photosensitive resin tank, the photosensitive resin of laser contact polymerizes into the solid in the twinkling of an eye this moment, and the photosensitive resin of non-and light contact then can still be the maintenance liquid, but in printer working process, print platform during the decline of working under the drive of motor, can produce undulant or swirl in photosensitive resin, cause photosensitive resin tank can not in time supply new photosensitive resin to the solidification region, and lead to the printing surface of printing out inhomogeneous, the printing precision is lower.

SUMMERY OF THE UTILITY MODEL

For the photosensitive resin who solves prior art existence produces undulant, the lower technical problem of printing a precision, the utility model provides a following technical scheme.

The utility model relates to a high accuracy 3D printer, including printer body, workstation and laser system, workstation upper portion is equipped with the resin silo, resin silo one side is equipped with the print platform who goes up and down in the resin silo by elevating system control, resin silo one side is equipped with floating mechanism, floating mechanism includes first lead screw and second lead screw by first driving motor and second driving motor driven, the first nut lower part of first lead screw is equipped with first connecting block, the second nut lower part of second lead screw is equipped with the second connecting block, the one end of the rotation axis that the output of the third driving motor that first connecting block one side set up is connected rotates with the second connecting block and is connected, the outside cover of rotation axis is equipped with the roller for roll floating undulant photosensitive resin.

As a further technical scheme, the lower end of the roller in the vertical direction is positioned in the resin trough and is in contact with the upper part of the printing layer of the resin trough in the horizontal direction.

As a further technical scheme, an anti-sticking film is sleeved on the outer side of the roller to prevent the roller from sticking to the photosensitive resin.

As a further technical scheme, the rotation speed of the roller is consistent with the moving speed of the first nut and the second nut.

As a further technical scheme, a connecting rod is fixedly connected between the first nut and the second nut so as to ensure the synchronous smoothness of the first nut and the second nut during horizontal movement.

As a further technical scheme, one end of the first screw rod is connected with the output end of a first driving motor fixedly connected with a first supporting plate located on one side of the workbench, and the other end of the first screw rod is rotatably connected with a second supporting plate located on one side of the resin trough.

As a further technical scheme, the roller is in a shape that the outer diameter is gradually reduced from two ends to the middle, so that the photosensitive resin positioned at the periphery can extrude and smooth the middle curing area.

The beneficial effects of the utility model, the utility model discloses a floating mechanism has been set up in resin silo one side, the motion of two parallel lead screws drives the roller and produces undulant resin roll floating when sinking, the first connecting block in first lead screw below has set up third driving motor, third driving motor can adjust the roll speed of roller, the rotary motion of first lead screw and second lead screw turns into linear motion through first nut and second nut, and then drive the roller and float to the resin at the motion of horizontal direction, third driving motor drives the roller and uses the rotation axis to rotate as the center simultaneously, further float to undulant resin and operate, make the resin horizontal plane reduce undulant, the printing precision of 3D printer has been improved, the reducible roller of anti-sticking film that the outside cover of roller was established is to the adhesion of resin, prevent that the roller from printing the layer to the resin and cause the influence, further improve the printing precision.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the high-precision 3D printer of the present invention;

FIG. 2 is a schematic diagram of a floating mechanism of the high-precision 3D printer of the present invention;

fig. 3 is a schematic view of a roller mechanism of the high-precision 3D printer of the present invention;

in the figure: 1-a printer body; 2-a workbench; 3-a laser system; 4-a resin trough; 5-a lifting mechanism; 6-a printing platform; 7-a troweling mechanism; 701-a first drive motor; 702-a first lead screw; 703-a first nut; 704-a second drive motor; 705-a second lead screw; 706-a second nut; 707-first connection block; 708-a second connection block; 709-a rotating shaft; 710-a connecting rod; 711-a roller; 8-a third drive motor; 9-a first support plate; 10-a second support plate; 11-a third support plate; 12-fourth support plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, the utility model relates to a high accuracy 3D printer, including printer body 1, workstation 2 and

laser system

3, 2 upper portions of workstation are equipped with resin silo 4, are used for holding liquid photosensitive resin in the

resin silo

4, 4 one sides of resin silo are equipped with elevating

system

5, and 5 upper portions of elevating system are connected with print platform 6, by elevating system 5 control print platform 6 oscilaltion in resin silo 4, when laser system 3 shines the photosensitive resin who is located print platform 6 upper portion and prints the layer, the printing of one deck is accomplished in the photosensitive resin solidification, and 6 one deck that descends of elevating system 5 control print platform this moment, the photosensitive resin of liquid produces undulantly when flowing to the solidification region, is floated undulant photosensitive resin by following floating mechanism 7.

As shown in fig. 1 and 2, a floating mechanism 7 is disposed on one side of the resin tank 4, the floating mechanism 7 includes a first support plate 9 and a third support plate 11 located on one side of the working table 2, a first driving motor 701 is fixedly connected to an upper portion of the first support plate 9, an output end of the first driving motor 701 is connected to a first lead screw 702, the first lead screw 702 is rotatably connected to a second support plate 10 located on the other side of the resin tank 4, the first lead screw 702 can rotate under the driving of the first driving motor 701, a first nut 703 is connected to an outer side of the first lead screw 702, and the first nut 703 is a lead screw nut and can convert the rotation of the first lead screw 702 into a linear motion of the first nut 703. A second driving motor 704 is fixedly connected to the upper portion of the third support plate 11, a second lead screw 705 is connected to an output end of the second driving motor 704, the second lead screw 705 is rotatably connected to a fourth support plate 12 located on the other side of the resin tank 4, the second lead screw 705 can be driven by the second driving motor 704 to rotate, a second nut 706 is connected to the outer side of the second lead screw 705, and the second nut 706 is a lead screw nut and can convert the rotation motion of the second lead screw 705 into the linear motion of the second nut 706. The first lead screw 702 and the second lead screw 705 are arranged in parallel, a connecting rod 710 is fixedly connected between the first nut 703 and the second nut 706, and the connecting rod 710 is perpendicular to the first lead screw 702 and the second lead screw 705, so that the synchronous stability of the first nut 703 and the second nut 706 during horizontal movement is ensured.

As shown in fig. 2 and 3, a first connecting block 707 is disposed at a lower portion of the first nut 703, a second connecting block 708 is disposed at a lower portion of the second nut 706, the first connecting block 707 and the second connecting block 708 are both vertically downward plate-shaped structures, the thickness and the width of the first connecting block 707 are based on the condition of not contacting the resin tank 4, a third driving motor 8 is disposed at one side of the first connecting block 707, an output end of the third driving motor 8 is connected with a rotating shaft 709 in a direction toward the second connecting block 708, one end of the rotating shaft 709 is rotatably connected with the second connecting block 708, the rotating shaft 709 can be driven by the third driving motor 8 to rotate, a roller 711 is sleeved outside the rotating shaft 709, the roller 711 is a hollow cylindrical structure, and the roller 711 is used for rolling and leveling the fluctuating photosensitive resin, it should be noted that a lower end of the roller 711 is located inside the resin tank 4 in a vertical direction and is in contact with an upper end of a printing layer of the resin tank 4 in a horizontal direction, when the printing platform 6 descends one layer in the resin tank, the printing platform 6, the roller 711 can flatly press the resin higher than the printing layer of the printing layer to a curing area, so that the photosensitive resin in a curing area is consistent with other photosensitive resin in a horizontal direction, and the printing system, thereby preventing the printing precision of the printing system from being reduced by a laser beam.

In a further embodiment, an anti-sticking film is sleeved outside the roller 711 to prevent the roller 711 from sticking to the photosensitive resin. Preferably, the roller 711 has a shape that the outer diameter is gradually reduced from two ends to the middle so as to press the photosensitive resin around the roller to smooth the middle cured area, and the rotation speed of the roller 711 is consistent with the moving speed of the first nut 703 and the second nut 706.

While the preferred embodiments and examples of the present invention have been illustrated and described in detail in the drawings and described above, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a high accuracy 3D printer, includes printer body (1), workstation (2) and laser system (3), workstation (2) upper portion is equipped with resin silo (4), resin silo (4) one side is equipped with print platform (6) that go up and down in resin silo (4) by elevating system (5) control, its characterized in that: resin silo (4) one side is equipped with floating mechanism (7), floating mechanism (7) include by first driving motor (701) and second driving motor (704) driven first lead screw (702) and second lead screw (705), first nut (703) lower part of first lead screw (702) is equipped with first connecting block (707), second nut (706) lower part of second lead screw (705) is equipped with second connecting block (708), the one end and the second connecting block (708) of rotation axis (709) that the output of third driving motor (8) that first connecting block (707) one side set up is connected rotate, rotation axis (709) outside cover is equipped with roller (711) for roll floating undulant photosensitive resin.

2. The high precision 3D printer of claim 1, wherein: the lower end of the roller (711) in the vertical direction is positioned in the resin trough (4) and is in contact with the upper part of the printing layer of the resin trough (4) in the horizontal direction.

3. The high precision 3D printer of claim 2, wherein: the anti-sticking film is sleeved on the outer side of the roller (711) to prevent the roller (711) from sticking to the photosensitive resin.

4. The high precision 3D printer of claim 2, wherein: the rotation speed of the roller (711) is consistent with the moving speed of the first nut (703) and the second nut (706).

5. The high precision 3D printer of claim 1, wherein: a connecting rod (710) is fixedly connected between the first nut (703) and the second nut (706) to ensure the synchronous smoothness of the first nut (703) and the second nut (706) during horizontal movement.

6. The high precision 3D printer of claim 1, wherein: one end of the first screw rod (702) is connected with the output end of a first driving motor (701) fixedly connected with a first supporting plate (9) positioned on one side of the workbench (2), and the other end of the first screw rod (702) is rotatably connected with a second supporting plate (10) positioned on one side of the resin trough (4).

7. The high precision 3D printer of claim 1, wherein: the roller (711) is in a shape that the outer diameter is gradually reduced from two ends to the middle so as to press and smooth the middle curing area by the photosensitive resin positioned at the periphery.