阅读说明：本技术 一种多光源多自由度可变式平台液体3d打印机 (Multi-light-source multi-degree-of-freedom variable platform liquid 3D printer ) 是由 白晓天 王子男 石怀涛 戴蕊宏 赵蔚丹 贺子涵 于 2019-11-22 设计创作，主要内容包括：一种多光源多自由度可变式平台液体3D打印机,包括底座、光敏树脂槽、多光源机构、成型零件承载平台、平台升降导向丝杠、电动升降基座、电动伸缩杆、电磁吸头及保护罩；光敏树脂槽位于底座上,多光源机构位于光敏树脂槽内；平台升降导向丝杠竖直设在光敏树脂槽侧方,电动升降基座可在丝杠上竖向移动；电动伸缩杆水平固连在电动升降基座上,电磁吸头固装在电动伸缩杆端部；成型零件承载平台水平吸附吊装在电磁吸头上且位于光敏树脂槽正上方；光敏树脂槽侧壁内表面采用弧面结构,用以使反射激光束照射在成型零件承载平台下表面；多光源机构为球形结构,其周向均布有多个激光源,激光源相对于球心可径向移动,多光源机构可升降运动和回转运动。(A multi-light-source multi-degree-of-freedom variable platform liquid 3D printer comprises a base, a photosensitive resin groove, a multi-light-source mechanism, a formed part bearing platform, a platform lifting guide screw rod, an electric lifting base, an electric telescopic rod, an electromagnetic suction head and a protective cover; the photosensitive resin groove is positioned on the base, and the multi-light source mechanism is positioned in the photosensitive resin groove; the platform lifting guide screw rod is vertically arranged on the side of the photosensitive resin tank, and the electric lifting base can vertically move on the screw rod; the electric telescopic rod is horizontally and fixedly connected to the electric lifting base, and the electromagnetic suction head is fixedly arranged at the end part of the electric telescopic rod; the molded part bearing platform is horizontally adsorbed and hung on the electromagnetic suction head and is positioned right above the photosensitive resin tank; the inner surface of the side wall of the photosensitive resin groove adopts a cambered surface structure so as to enable the reflected laser beam to irradiate the lower surface of the bearing platform of the formed part; the multi-light source mechanism is of a spherical structure, a plurality of laser sources are uniformly distributed in the circumferential direction of the multi-light source mechanism, the laser sources can move radially relative to the center of the sphere, and the multi-light source mechanism can move in a lifting mode and rotate.)

1. The utility model provides a multi-light source multi freedom variable platform liquid 3D printer which characterized in that: the device comprises a base, a photosensitive resin groove, a multi-light-source mechanism, a formed part bearing platform, a platform lifting guide screw rod, an electric lifting base, an electric telescopic rod, an electromagnetic sucker and a protective cover; the photosensitive resin groove is arranged in the middle of the upper surface of the base, and the multi-light-source mechanism is positioned in the photosensitive resin groove; the platform lifting guide screw is vertically arranged on a base at the side of the photosensitive resin tank, the electric lifting base is arranged on the platform lifting guide screw, and the electric lifting base has vertical movement freedom on the platform lifting guide screw; the electric telescopic rod is horizontally arranged, one end of the electric telescopic rod is fixedly connected to the electric lifting base, and the electromagnetic suction head is fixedly arranged at the other end of the electric telescopic rod; the molded part bearing platform is horizontally adsorbed and hung on the electromagnetic suction head and is positioned right above the photosensitive resin tank; the safety cover is installed on the base, photosensitive resin groove, many light source mechanism, shaping part bearing platform, platform lift direction lead screw, electric lift base, electric telescopic handle and electromagnetism suction head all are located the safety cover.

2. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 1, characterized in that: the inner surface of the side wall of the photosensitive resin groove is of an arc surface structure, and after laser beams output by the multi-light source mechanism irradiate the inner surface of the side wall of the photosensitive resin groove, the reflected laser beams irradiate on the bearing platform of the formed part.

3. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 1, characterized in that: the multi-light source mechanism adopts a spherical structure, a plurality of laser sources are uniformly distributed along the circumferential direction of the multi-light source mechanism in the horizontal direction, the laser beams for irradiation are all independently output by the plurality of laser sources, and each laser source adopts an automatic focusing type laser source.

4. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 3, wherein: each of the laser sources has a degree of freedom of radial movement relative to the center of sphere of the multi-light source mechanism.

5. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 1, characterized in that: and an electric rotary table is arranged at the bottom of the multi-light source mechanism, and the multi-light source mechanism has a rotary degree of freedom through the electric rotary table.

6. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 5, wherein: an electric lifting platform is arranged between the multi-light source mechanism and the electric rotary platform, and the multi-light source mechanism has lifting freedom degree through the electric lifting platform.

7. The multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to claim 1, characterized in that: the safety cover adopts spherical structure, and the safety cover includes quiet cover and moves the cover, moves the cover and adopts the upset mode of opening and shutting for quiet cover, and quiet cover all adopts brown transparent material to make with moving the cover.

Technical Field

The invention belongs to the technical field of liquid 3D printing, and particularly relates to a multi-light-source multi-degree-of-freedom variable platform liquid 3D printer.

Background

The liquid 3D printing technology is a processing and manufacturing technology which takes a three-dimensional design of a computer as a blueprint, relies on a software layering dispersion and numerical control technology and utilizes laser beams to irradiate a photosensitive resin material to enable the photosensitive resin material to be cured and molded. Compared with the traditional processing and manufacturing technology, the liquid 3D printing technology does not need die design, can be directly accumulated and molded, and can effectively reduce the manufacturing cost.

①, the traditional liquid 3D printer generally adopts a single light source to output laser beams for irradiation, so that the irradiation efficiency is relatively low, the machining efficiency of a formed part is influenced, ②, a platform for bearing the formed part can only move up and down, and the machining size of the formed part is limited.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a multi-light-source multi-degree-of-freedom variable platform liquid 3D printer, which adopts a multi-light source to output laser beams for irradiation, greatly improves the irradiation efficiency and further improves the processing efficiency of a formed part; the platform for bearing the formed parts not only has the freedom degree of lifting movement, but also has the freedom degree of horizontal movement, and the processing size of the formed parts can be effectively enlarged through the horizontal movement of the platform.

In order to achieve the purpose, the invention adopts the following technical scheme: a multi-light-source multi-degree-of-freedom variable platform liquid 3D printer comprises a base, a photosensitive resin groove, a multi-light-source mechanism, a formed part bearing platform, a platform lifting guide screw rod, an electric lifting base, an electric telescopic rod, an electromagnetic suction head and a protective cover; the photosensitive resin groove is arranged in the middle of the upper surface of the base, and the multi-light-source mechanism is positioned in the photosensitive resin groove; the platform lifting guide screw is vertically arranged on a base at the side of the photosensitive resin tank, the electric lifting base is arranged on the platform lifting guide screw, and the electric lifting base has vertical movement freedom on the platform lifting guide screw; the electric telescopic rod is horizontally arranged, one end of the electric telescopic rod is fixedly connected to the electric lifting base, and the electromagnetic suction head is fixedly arranged at the other end of the electric telescopic rod; the molded part bearing platform is horizontally adsorbed and hung on the electromagnetic suction head and is positioned right above the photosensitive resin tank; the safety cover is installed on the base, photosensitive resin groove, many light source mechanism, shaping part bearing platform, platform lift direction lead screw, electric lift base, electric telescopic handle and electromagnetism suction head all are located the safety cover.

The inner surface of the side wall of the photosensitive resin groove is of an arc surface structure, and after laser beams output by the multi-light source mechanism irradiate the inner surface of the side wall of the photosensitive resin groove, the reflected laser beams irradiate on the bearing platform of the formed part.

The multi-light source mechanism adopts a spherical structure, a plurality of laser sources are uniformly distributed along the circumferential direction of the multi-light source mechanism in the horizontal direction, the laser beams for irradiation are all independently output by the plurality of laser sources, and each laser source adopts an automatic focusing type laser source.

Each of the laser sources has a degree of freedom of radial movement relative to the center of sphere of the multi-light source mechanism.

And an electric rotary table is arranged at the bottom of the multi-light source mechanism, and the multi-light source mechanism has a rotary degree of freedom through the electric rotary table.

An electric lifting platform is arranged between the multi-light source mechanism and the electric rotary platform, and the multi-light source mechanism has lifting freedom degree through the electric lifting platform.

The safety cover adopts spherical structure, and the safety cover includes quiet cover and moves the cover, moves the cover and adopts the upset mode of opening and shutting for quiet cover, and quiet cover all adopts brown transparent material to make with moving the cover.

The invention has the beneficial effects that:

according to the multi-light-source multi-degree-of-freedom variable platform liquid 3D printer, the laser beams for irradiation are output by adopting the multi-light sources, so that the irradiation efficiency is greatly improved, and the processing efficiency of a molded part is further improved; the platform for bearing the formed parts not only has the freedom degree of lifting movement, but also has the freedom degree of horizontal movement, and the processing size of the formed parts can be effectively enlarged through the horizontal movement of the platform.

Drawings

FIG. 1 is a schematic structural diagram of a multi-light-source multi-degree-of-freedom variable platform liquid 3D printer according to the present invention;

in the figure, 1-base, 2-photosensitive resin groove, 3-multiple light source mechanism, 4-forming part bearing platform, 5-platform lifting guide screw rod, 6-electric lifting base, 7-electric telescopic rod, 8-electromagnetic sucker, 9-protective cover.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1, a multi-light source multi-degree-of-freedom variable platform liquid 3D printer comprises a base 1, a photosensitive resin tank 2, a multi-light source mechanism 3, a molded part bearing platform 4, a platform lifting guide screw 5, an electric lifting base 6, an electric telescopic rod 7, an electromagnetic suction head 8 and a protective cover 9; the photosensitive resin groove 2 is arranged in the middle of the upper surface of the base 1, and the multi-light-source mechanism 3 is positioned in the photosensitive resin groove 2; the platform lifting guide screw 5 is vertically arranged on the base 1 at the side of the photosensitive resin tank 2, the electric lifting base 6 is arranged on the platform lifting guide screw 5, and the electric lifting base 6 has vertical movement freedom on the platform lifting guide screw 5; the electric telescopic rod 7 is horizontally arranged, one end of the electric telescopic rod 7 is fixedly connected to the electric lifting base 6, and the electromagnetic suction head 8 is fixedly arranged at the other end of the electric telescopic rod 7; the molded part bearing platform 4 is horizontally adsorbed and hung on the electromagnetic suction head 8, and the molded part bearing platform 4 is positioned right above the photosensitive resin tank 2; the safety cover 9 is installed on the base 1, the photosensitive resin groove 2, the multi-light source mechanism 3, the formed part bearing platform 4, the platform lifting guide screw 5, the electric lifting base 6, the electric telescopic rod 7 and the electromagnetic suction head 8 are all located in the safety cover 9.

The inner surface of the side wall of the photosensitive resin groove 2 adopts an arc surface structure, and after laser beams output by the multi-light source mechanism 3 irradiate the inner surface of the side wall of the photosensitive resin groove 2, the reflected laser beams irradiate on the bearing platform 4 of the formed part.

The multi-light source mechanism 3 adopts a spherical structure, eight laser sources are uniformly distributed along the circumferential direction of the multi-light source mechanism 3 in the horizontal direction, the eight laser sources all independently output laser beams for irradiation, and each laser source all adopts an automatic focusing type laser source.

Each of the laser light sources has a freedom of radial movement with respect to the center of the sphere of the multi-light source mechanism 3.

An electric rotary table is arranged at the bottom of the multi-light source mechanism 3, and the multi-light source mechanism 3 has a rotary degree of freedom through the electric rotary table.

An electric lifting platform is arranged between the multi-light source mechanism 3 and the electric rotary platform, and the multi-light source mechanism 3 has lifting freedom degree through the electric lifting platform.

The protective cover 9 adopts a spherical structure, the protective cover 9 comprises a static cover and a movable cover, the movable cover adopts a turnover opening and closing mode relative to the static cover, and the static cover and the movable cover are both made of brown transparent materials and used for preventing photosensitive resin from deteriorating under the irradiation of sunlight.

The one-time use process of the present invention is described below with reference to the accompanying drawings:

firstly, the protective cover 9 is opened, then the electric lifting base 6 is lifted to the top of the platform lifting guide screw 5, the electric telescopic rod 7, the electromagnetic suction head 8 and the molded part bearing platform 4 are synchronously driven to rise, then liquid photosensitive resin is poured into the photosensitive resin groove 2 until the photosensitive resin groove 2 is filled with the photosensitive resin, at the moment, eight laser sources on the multi-light-source mechanism 3 are all immersed in the photosensitive resin, and the laser beams are ensured to be completely reflected in the photosensitive resin.

After the photosensitive resin is filled, the electric lifting base 6 in the lifting state is controlled to fall until the lower surface of the molded part bearing platform 4 completely falls on the photosensitive resin tank 2, and the liquid level of the photosensitive resin is directly contacted with the lower surface of the molded part bearing platform 4 at the moment.

The opened protective cover 9 is closed, then the printing procedure is started, at this time, the multi-light source mechanism 3 is started, laser beams for irradiation are output by the laser sources, the laser beams firstly irradiate the inner surface of the side wall of the photosensitive resin groove 2, the laser beams are irradiated on the lower surface of the molded part bearing platform 4 after being reflected, and under the irradiation effect of the reflected laser beams, the photosensitive resin on the lower surface of the molded part bearing platform 4 is firstly cured until the first layer of printing is finished.

After the first layer is printed, the multi-light source mechanism 3 is closed, the electric lifting base 6 is lifted upwards by a set layer height, the molded part bearing platform 4 is further lifted by the set layer height synchronously, and then the multi-light source mechanism 3 is restarted until the second layer is printed.

And analogizing in sequence until the printing work of all layers is completed, fixing the printed molded part on the lower surface of the molded part bearing platform 4 in an inverted mode, and then opening the protective cover 9 to take the printed molded part off from the lower surface of the molded part bearing platform 4.

Cleaning the lower surface of the molded part bearing platform 4 to prepare for next printing, then supplementing photosensitive resin into the photosensitive resin tank 2 to ensure that the photosensitive resin is refilled in the photosensitive resin tank 2, and then starting to execute the next printing operation.

In the part printing process, the horizontal position of the molded part bearing platform 4 can be adjusted by adjusting the extension of the electric telescopic rod 7 so as to enlarge the machining size of the molded part. In addition, in the part printing process, a plurality of laser sources on the multi-light-source mechanism 3 can work in a coordinated mode, three-degree-of-freedom adjustment can be conducted simultaneously, multi-element processing can be met, multi-angle processing can be met, traditional point irradiation is changed into approximate line irradiation, and therefore processing efficiency is greatly improved.