CN212920465U

CN212920465U - Surface projection matrix light source of large-size LCD photocuring 3D printer

Info

Publication number: CN212920465U
Application number: CN202021610962.6U
Authority: CN
Inventors: 陈烜; 吴志刚; 彭大鹏; 何谢见
Original assignee: Suzhou Daye 3d Printing Technology Co ltd
Current assignee: Suzhou Daye 3d Printing Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-09
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a surface projection matrix light source of a large-size LCD photocuring 3D printer, which comprises a plurality of projection light cups, wherein one wide end of each projection light cup is fixedly connected with a light guide cover, a plurality of projection light cups are arranged in a row to form a matrix light source, a certain distance is arranged between every two adjacent projection light cups, the plurality of projection light cups are uniformly arranged in a metal frame through the light guide cover, grooves are arranged on the inner walls of the two sides of the bottom end of each projection light cup, convex blocks are arranged in the grooves, and arc-shaped fixed rods are arranged on one side of each projection light cup. Not only the uneven problem of light distribution has improved product printing quality.

Description

Surface projection matrix light source of large-size LCD photocuring 3D printer

Technical Field

The utility model belongs to the technical field of the 3D prints, concretely relates to surface projection matrix light source of jumbo size LCD photocuring 3D printer.

Background

LCD photocuring 3D prints and is adopting LCD formation of image principle, utilizes the technique that the ultraviolet ray printed the photocuring resin successive layer into the part, has characteristics such as shaping precision height, structure are simple and easy, price/performance ratio height, at jewelry, medical science application, there is wide application prospect in fields such as product design, LCD photocuring shaping principle is: by utilizing the LCD imaging principle, under the drive of a microcomputer and a display screen drive circuit, an image signal is provided by a computer program, a selective light-transmitting area appears on the liquid crystal screen, and under the irradiation of ultraviolet light, the ultraviolet light transmitting through the release film and resin in the liquid crystal box are subjected to curing reaction. With the completion of curing, the forming platform structure as a separation module separates the cured resin from the release film, and then enters the next cycle, and the model is printed layer by layer in a laminated stacking manner.

The resin can be cured only by ultraviolet irradiation, the curing speed of the resin is in direct proportion to the intensity and the ultraviolet irradiation intensity, the size precision of the curing molding is in direct relation to the precision of projection imaging, and the irradiation intensity error of a light source is not more than 10% in the whole projection range. The ultraviolet light source of the lamp bead projects light onto the release film by penetrating through the screen pattern, and the size of the obtained pattern is too large as that of the preset pattern.

The existing 3D printing projection light source technology has the following problems: generally, the release film 1 is tightly attached to the LCD screen 4, so that a projected light source directly acts on the release film after a projection pattern, the size deviation is avoided, but the mode defect that no protective layer exists between the release film and the LCD screen is very obvious and serious, the surface of the LCD screen is made of plastic, and the condition that a reinforcing material cannot be arranged between the release film and the LCD screen is directly used as a stress, once impurities exist in the middle of a liquid material box, the screen is inevitably damaged, and therefore a new 3D printing projection light source technology is urgently needed to solve the problem of the size deviation of the pattern.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a surface projection matrix light source of jumbo size LCD photocuring 3D printer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a surface projection matrix light source of a large-size LCD photocuring 3D printer comprises a projection light cup, and is characterized in that: the projection light cup comprises light cup and light guide cover, its structure of light cup is leaks hopper-shaped, and is wide from top to bottom narrow, and it is excessive that the terminal surface passes through the circular arc curved surface from top to bottom, projection light cup wide mouth one end and light guide cover fixed connection, a plurality of projection light cup permutation combination constitutes matrix light source, and is a plurality of the even rectangle of permutation equidistance is arranged between the projection light cup, adjacent two the interval has a certain distance between the projection light cup, a plurality of projection light cups evenly set up inside metal crate through the light guide cover, set up the recess on the inner wall of projection light cup bottom both sides, be provided with the lug in the recess, lug one side sets up the radian face, lug radian face department and rotatory fastener fixed connection, projection light cup one side is provided with the radian dead lever.

Preferably, the edge of the metal frame is fixedly connected with the rotary clamping piece through an arc-shaped fixing rod.

Preferably, the material of the light cup is high-temperature-resistant photosensitive resin, the light cup is manufactured by a 3D printing technology, and the inside of the light cup is in a high-light-reflection state through an electroplating or aluminum spraying process.

Preferably, the bottom end of the projection light cup is provided with a bottom opening, the bottom plate of the projection light cup is provided with a light source and a light homogenizing sheet, and the light homogenizing sheet is arranged on one side of the output end of the light source.

Preferably, the arc-shaped fixing rod comprises an arc part and a straight rod part, the arc part is attached to the arc curved surface at the upper end of the projection light cup, and the bottom end of the straight rod part is fixedly connected with the rotary clamping piece.

Preferably, the inner wall of the light cup is smooth and clean.

Compared with the prior art, the utility model provides a surface projection matrix light source of jumbo size LCD photocuring 3D printer possesses following beneficial effect:

1. the utility model discloses an install the light source in projection light cup bottom, the permutation equidistance is evenly arranged between every projection light cup simultaneously and is constituted the matrix light source, be provided with certain distance between two adjacent projection light cups, make the light that projection light cup throws disperse more, position at the light source export sets up even slide, the light that makes every projection light cup go out throws more evenly, the uneven problem of light distribution has been solved, not only the product printing quality has been improved, enterprise research and development cost has still been reduced, the research and development cycle has been shortened greatly.

2. The utility model discloses a split structure of assembling the combination is assembled to projection light cup, can make up into the use that bigger size projection light source is used for LCD3D printing apparatus easily, for traditional processing mode, the invention has adopted 3D to print new technology, new material, has effectively expanded 3D and has printed the development field.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural diagram of a surface projection matrix light source of a large-size LCD photocuring 3D printer according to the present invention;

fig. 2 is a front view of a surface projection matrix light source of the large-sized LCD photocuring 3D printer provided by the present invention;

FIG. 3 is a rear view of a surface projection matrix light source of the large-sized LCD photocuring 3D printer provided by the present invention;

fig. 4 is a side view of the surface projection matrix light source of the large-sized LCD photocuring 3D printer provided by the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 2;

FIG. 6 is an enlarged view at B in FIG. 3;

FIG. 7 is a schematic diagram of the optical path distribution of a surface projection matrix light source of a large-sized LCD photocuring 3D printer.

In the figure: 1. a projection light cup; 2. a metal frame; 3. rotating the clamping piece; 4. an arc-shaped fixing rod; 5. a light cup; 6. a light guide cover; 7. a bottom opening; 8. and (4) a bump.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a surface projection matrix light source of a large-size LCD photocuring 3D printer comprises a projection light cup 1 and is characterized in that: the projection light cup 1 is composed of a light cup 5 and a light guide cover 6, the light cup 5 is funnel-shaped, wide at the top and narrow at the bottom, the upper end face and the lower end face are excessive through an arc curved surface, the light cup 5 is made of high-temperature-resistant photosensitive resin by using a 3D printing technology, the interior of the light cup 5 is in a high-reflection state through an electroplating or aluminum spraying process, the inner wall of the light cup 5 is smooth and clean, one wide end of the light cup 5 is fixedly connected with the light guide cover 6, a plurality of projection light cups 1 are arranged in an array to form a matrix light source, the plurality of projection light cups 1 are arranged in an equidistant and uniform rectangular manner, a certain distance is reserved between every two adjacent projection light cups 1, the plurality of projection light cups 1 are uniformly arranged in the metal frame 2 through the light guide cover 6, the projection light cups 1 are conveniently fixed in the metal frame 2 through the light guide cover 6, and the matrix light source is conveniently formed through the metal frame 2 and the, the metal frame 2 simultaneously limits and fixes a plurality of projection light cups 1, the edge of the metal frame 2 is fixedly connected with a rotary clamping piece 3 through an arc-shaped fixed rod 4, the metal frame 2 and the arc-shaped fixed rod 4 keep the stability of a matrix light source, the inner walls of the two sides of the bottom end of the projection light cup 1 are provided with grooves, a convex block 8 is arranged in each groove, one side of each convex block 8 is provided with a radian surface, the radian surface of each convex block 8 is fixedly connected with the rotary clamping piece 3, one side of the projection light cup 1 is provided with the arc-shaped fixed rod 4, each arc-shaped fixed rod 4 comprises an arc part and a straight rod part, each arc part is attached to the radian surface of the upper end of the projection light cup 1, the bottom end of each straight rod part is fixedly connected with the rotary clamping piece 3, the bottom end of the projection light cup 1 is provided with a bottom opening 7, the light homogenizing sheet is arranged at the position of the light source outlet, so that the light of each projection light cup 1 is projected more uniformly.

Referring to fig. 7, the light source is installed at the bottom of the projection light cup 1, when the projection light cup 1 is not installed, the width of the light source with the light source emission half-angle β to illuminate the screen is H, and the illumination width after the projection light cup 1 is installed is H1, where H1< H, so as to reduce the light intensity distribution gradient from the center to the edge, and simultaneously avoid the intersection of the light projected between the light source and the light source.

The utility model discloses an when using, install the light source in projection light cup 1 bottom through crossing, the permutation equidistance is evenly arranged and is constituted the matrix light source between every projection light cup 1 simultaneously, be provided with certain distance between two adjacent projection light cups 1, make the light that projection light cup 1 throws disperse more, position at the light source export sets up even slide, the light that makes every projection light cup 1 go out throws more evenly, and projection light cup 1 carries out the components of a whole that can function independently structure of assembling the combination, can make up into bigger size's projection light source easily and be used for the use of LCD3D printing apparatus, for traditional processing mode, the invention has adopted 3D to print new technique, the new material, 3D prints the development field effectively having expanded.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A surface projection matrix light source of a large-size LCD photocuring 3D printer comprises a projection light cup (1), and is characterized in that: the projection light cup (1) is composed of a light cup (5) and a light guide cover (6), the structure of the light cup (5) is funnel-shaped, the upper part is wide and the lower part is narrow, the upper end surface and the lower end surface are excessive through an arc curved surface, one end of a wide opening of the light cup (5) is fixedly connected with the light guide cover (6), a plurality of the projection light cups (1) are combined in an array to form a matrix light source, the plurality of the projection light cups (1) are uniformly arranged in an array at equal intervals in a rectangular manner, a certain distance is arranged between every two adjacent projection light cups (1), the plurality of projection light cups (1) are uniformly arranged in the metal frame (2) through the light guide cover (6), the inner walls of the two sides of the bottom end of the projection light cup (1) are provided with grooves, the grooves are internally provided with convex blocks (8), the projection lamp is characterized in that a radian surface is arranged on one side of the projection (8), the radian surface of the projection (8) is fixedly connected with the rotary clamping piece (3), and an arc-shaped fixing rod (4) is arranged on one side of the projection light cup (1).

2. The surface projection matrix light source of a large-size LCD photocuring 3D printer as recited in claim 1, wherein: the edge of the metal frame (2) is fixedly connected with the rotary clamping piece (3) through an arc-shaped fixed rod (4).

3. The surface projection matrix light source of a large-size LCD photocuring 3D printer as recited in claim 1, wherein: the material of the light cup (5) is high-temperature-resistant photosensitive resin and is manufactured by using a 3D printing technology, and the light cup (5) is made to be in a high-light-reflection state through an electroplating or aluminum spraying process.

4. The surface projection matrix light source of a large-size LCD photocuring 3D printer as recited in claim 1, wherein: the bottom of the projection light cup (1) is provided with a bottom opening (7), the bottom of the projection light cup (1) is provided with a light source and a light homogenizing sheet, and the light homogenizing sheet is arranged on one side of the output end of the light source.

5. The surface projection matrix light source of a large-size LCD photocuring 3D printer as recited in claim 1, wherein: the arc-shaped fixing rod (4) comprises an arc part and a straight rod part, the arc part is attached to the arc curved surface at the upper end of the projection light cup (1), and the bottom end of the straight rod part is fixedly connected with the rotary clamping piece (3).

6. The surface projection matrix light source of a large-size LCD photocuring 3D printer as recited in claim 1, wherein: the inner wall of the light cup (5) is smooth and clean.