阅读说明：本技术 上拉式高速离型回流光固化3d打印机 (Pull-up high-speed type reflux photocuring 3D printer ) 是由 吴建梅 于 2020-11-26 设计创作，主要内容包括：本发明涉及一种上拉式高速离型回流光固化3D打印机,它包括升降平台机构、斜拉式料槽机构以及光源机构；所述斜拉式料槽机构包括固定支架以及活动连接在固定支架上侧面的料槽,所述升降平台机构上拉时带动料槽发生倾斜。本发明的目的在于提供一种上拉式高速离型回流光固化3D打印机。本发明的优点在于：本发明中的料槽活动连接在固定支架上侧面,当升降平台机构上拉时带动料槽发生倾斜,产生类似撕扯的动作,迅速分离打印件和硬质离型膜。上述过程相比于传统方式,分离速度不仅提高数倍,还可减少升降平台机构的行程,从而减短复位时间,进一步提高打印效率。(The invention relates to a pull-up high-speed release type backflow photocuring 3D printer which comprises a lifting platform mechanism, a cable-stayed material groove mechanism and a light source mechanism, wherein the lifting platform mechanism is arranged on the upper surface of the lifting platform mechanism; the oblique-pulling type trough mechanism comprises a fixed support and a trough movably connected to the upper side face of the fixed support, and the lifting platform mechanism drives the trough to incline when being pulled upwards. The invention aims to provide a pull-up type high-speed release reflow photocuring 3D printer. The invention has the advantages that: the trough of the invention is movably connected to the upper side surface of the fixed support, and when the lifting platform mechanism is pulled upwards, the trough is driven to incline, so that tearing-like action is generated, and the printing part and the hard release film are quickly separated. Compared with the traditional mode, the separation speed is increased by several times, and the stroke of the lifting platform mechanism can be reduced, so that the reset time is shortened, and the printing efficiency is further improved.)

1. The utility model provides a pull-up high-speed type backward flow photocuring 3D printer that leaves, its characterized in that: the device comprises a lifting platform mechanism (1), a diagonal draw type trough mechanism (2) and a light source mechanism (3);

the oblique-pulling type trough mechanism (2) comprises a fixed support (2-1) and a trough (2-2) movably connected to the upper side face of the fixed support (2-1), and the trough (2-2) is driven to incline when the lifting platform mechanism (1) is pulled upwards.

2. The pull-up high-speed release reflow photocuring 3D printer according to claim 1, wherein: one side of the trough (2-2) is connected to the fixed support (2-1) through a universal movable joint (2-3).

3. The pull-up high-speed release reflow photocuring 3D printer according to claim 1, wherein: one side of the trough (2-2) is hinged on the fixed support (2-1).

4. The pull-up high-speed release reflow photocuring 3D printer according to claim 2, wherein: the fixed support (2-1) is provided with a guide piece for guiding the trough (2-2) to automatically reset when falling.

5. The pull-up high-speed release reflow photocuring 3D printer of claim 4, wherein: the guide piece comprises a positioning pin support (2-4), and a V-shaped guide groove is formed in the upper end of the positioning pin support (2-4); and the positioning pin (2-5) matched with the positioning pin support (2-4) is arranged on the trough (2-2).

6. The pull-up high-speed release reflow photocuring 3D printer according to any one of claims 1 to 5, wherein: and a release film (2-6) is arranged at the bottom of the trough (2-2).

7. The pull-up high-speed release reflow photocuring 3D printer of claim 6, wherein: the release film (2-6) is a hard release film.

8. The pull-up high-speed release reflow photocuring 3D printer of claim 7, wherein: a screen (2-7) is arranged on the lower side of the release film (2-6), and a certain distance is reserved between the screen (2-7) and the release film (2-6).

9. The pull-up high-speed release reflow photocuring 3D printer of claim 7, wherein: the screen (2-7) is fixed on the upper side face of the fixed support (2-1), and the trough (2-2) is covered on the upper side of the screen (2-7).

10. The pull-up high-speed release reflow photocuring 3D printer of claim 7, wherein: the lifting platform mechanism (1) comprises a forming platform (1-1), a Z-axis guide rail (1-2) and a lifting sliding block (1-3); the light source mechanism (3) is a highly parallel light source.

Technical Field

The invention relates to the field of 3D printing, in particular to a pull-up type high-speed release type backflow photocuring 3D printer.

Background

The photocuring 3D printing technology is mainly classified into SLA (stereolithography), DLP (digital light processing), LCD (liquid crystal mask), and MJP (multi-jet printing). The photocuring 3D printing technology is the most widely applied and mature 3D printing technology in the world at present. The method is widely applied to the fields of manual work, mold manufacturing, jewelry, structural design prototype verification, industrial small-batch manufacturing and the like.

The vast majority of DLP printers and LCD printers currently on the market are pull-up (the forming table moves up during the printing process) printers. The printing speed of the machine type is not fast, and the printing failure of the product is easily caused by the difficult release of the printing piece. In recent years, the problems are not improved well, and the use experience of consumers is greatly reduced.

Disclosure of Invention

The invention aims to provide a pull-up high-speed release type reflux photocuring 3D printer, which can effectively solve the problem of difficult release of a sample piece, greatly improve the success rate of sample piece printing, is beneficial to realizing a high-speed and continuous 3D printing and forming process and greatly improve the user experience.

The purpose of the invention is realized by the following technical scheme: a pull-up type high-speed release type backflow photocuring 3D printer comprises a lifting platform mechanism, a diagonal draw type trough mechanism and a light source mechanism; the oblique-pulling type trough mechanism comprises a fixed support and a trough movably connected to the upper side face of the fixed support, and the lifting platform mechanism drives the trough to incline when being pulled upwards.

Compared with the prior art, the invention has the advantages that:

1. the trough of the invention is movably connected to the upper side surface of the fixed support, and when the lifting platform mechanism is pulled upwards, the trough is driven to incline, so that tearing-like action is generated, and the printing part and the hard release film are quickly separated. Compared with the traditional mode, the separation speed is increased by several times, and the stroke of the lifting platform mechanism can be reduced, so that the reset time is shortened, and the printing efficiency is further improved.

2. Adopt oblique pull type silo mechanism design, the stereoplasm is from type membrane and printing piece at the initial stage of separation, and photosensitive resin in the silo can quick backward flow fill the gap, and its separation and filling are accomplished at same time basically, greatly reduced photosensitive resin backward flow time of filling.

3. The silo passes through universal movable joint to be connected on the fixed bolster, can carry out unilateral universal activity, and what its produced leaves the type angle also is random and universal, through the guide cooperation, can guarantee that the silo can all accurately reset after every activity.

4. According to the invention, the hard release diaphragm is matched with the inclined-pulling type trough mechanism, so that the pulling force of the printing piece on the release diaphragm can be completely converted into the lifting force on the trough, and the trough can be ensured to be rapidly inclined at the initial lifting section of the lifting platform mechanism.

5. A certain distance is left between the screen and the release film, and the gap can prevent the temperature of the photosensitive resin from being directly conducted to the screen, so that the screen is damaged and replaced.

Drawings

Fig. 1 is a schematic structural diagram (horizontal state) of an embodiment of a pull-up type high-speed release reflow photocuring 3D printer according to the invention.

Fig. 2 is a schematic structural diagram (inclined state) of the pull-up type high-speed release reflux photocuring 3D printer in fig. 1.

Fig. 3 is a front view of fig. 2.

Fig. 4 is a schematic structural view of the diagonal chute mechanism.

Fig. 5 is a vertical sectional view of the diagonal chute mechanism.

Fig. 6 is a schematic diagram of the operation of a conventional pull-up type photo-curing 3D printer.

Fig. 7 is a schematic diagram of the operation of the present invention.

Description of reference numerals: the device comprises a lifting platform mechanism 1, a forming platform 1-1, a Z-axis guide rail 1-2, a lifting sliding block 1-3, a diagonal draw type trough mechanism 2-1 fixed support, a trough 2-2, a universal movable joint 2-3, a positioning pin support 2-4, a positioning pin 2-5, a release film 2-6, a screen 2-7, a light source mechanism 3, a printing part 4 and photosensitive resin 5.

Detailed Description

The invention is described in detail below with reference to the drawings and examples of the specification:

fig. 1 to 7 are schematic diagrams illustrating an embodiment of a pull-up type high-speed release reflow photocuring 3D printer according to the present invention.

A pull-up type high-speed release type backflow photocuring 3D printer comprises a lifting platform mechanism 1, a diagonal draw type material groove mechanism 2 and a light source mechanism 3;

the oblique-pulling type trough mechanism 2 comprises a fixed support 2-1 and a trough 2-2 movably connected to the upper side face of the fixed support 2-1, and the trough 2-2 is driven to incline when the lifting platform mechanism 1 is pulled upwards.

One side of the trough 2-2 is connected to the fixed support 2-1 through a universal movable joint 2-3.

And the fixed support 2-1 is provided with a guide piece for guiding the trough 2-2 to automatically reset when falling.

The guide piece comprises a positioning pin support 2-4, and a V-shaped guide groove is formed in the upper end of the positioning pin support 2-4; and the positioning pin 2-5 matched with the positioning pin support 2-4 is arranged on the trough 2-2.

The trough 2-2 is connected to the fixed support 2-1 through the universal movable joint 2-3, can carry on unilateral universal activity, it is random and universal that its produced is from the type angle too. Through the matching of the guide pieces, the precise resetting of the trough 2-2 after each movement can be ensured.

In another embodiment, the trough 2-2 is hinged to the fixed bracket 2-1 at one side, the hinged shaft is horizontally arranged, and when the lifting platform mechanism 1 is pulled upwards, the trough 2-2 rotates along the hinged shaft, so that the tilting effect is realized.

And a release film 2-6 is arranged at the bottom of the trough 2-2.

The release film 2-6 is a hard release film. The hard release film can also be realized by attaching a flexible release film on the upper side of the glass.

Traditional upward pull type photocuring 3D printer is last all to adopt the flexible film from the type membrane, and the flexible film is directly pasted and is established on the screen, and lift platform mechanism rises the in-process, and the printing piece on it can glue glutinous flexibility from the type membrane to drive the flexibility and take place deformation from the type membrane, when dragging the power and reach the certain degree, printing piece and flexibility are from the type membrane separation, and the flexibility resets from the type membrane.

The invention adopts the design of the inclined-pulling type trough mechanism 2 and is matched with the hard release diaphragm, so that the pulling force of a printing piece on the release diaphragm can be completely converted into the lifting force of the trough 2-2, and the trough 2-2 can be ensured to be rapidly inclined at the initial lifting section of the lifting platform mechanism 1.

When printing and stereoplasm were from the type membrane parallel, the atress of both bonding faces was even, and when the stereoplasm was from the type membrane slope, then broken foretell atress balance, the border department of bonding face can take the lead to the separation to pull up the in-process at lift platform mechanism 1, produce the action of similar tearing, separate printing and stereoplasm rapidly and leave the type membrane. Compared with the traditional mode, the separation speed is increased by several times, and the stroke of the lifting platform mechanism 1 can be reduced (the traditional mode needs the platform to be lifted by more than 20mm to separate, and the invention can completely separate the platform only by 3-5 mm). The reduction of the stroke can shorten the reset time and further improve the printing efficiency.

In addition, when the hard release film and the printing piece are separated in the initial stage, namely a tiny separation gap is just generated, the photosensitive resin in the material groove 2-2 can quickly flow back to fill the gap, the separation and the filling are completed at the same time, and the time for the backflow filling of the photosensitive resin is greatly reduced

The lower side of the release film 2-6 is provided with a screen 2-7, and a certain distance is reserved between the screen 2-7 and the release film 2-6.

The gap between the screen 2-7 and the release film 2-6 prevents the temperature of the photosensitive resin from being directly transferred to the screen 2-7, resulting in damage to the screen 2-7 for replacement. And a cooling system may be provided in the gap.

In this embodiment, the screens 2-7 are LCD screens.

The screen 2-7 is fixed on the upper side face of the fixed support 2-1, and the trough 2-2 is covered on the upper side of the screen 2-7.

The lifting platform mechanism 1 comprises a forming platform 1-1, a Z-axis guide rail 1-2 and a lifting sliding block 1-3; the light source mechanism 3 is a highly parallel light source.