CN216139422U - 3D printer developments focusing device - Google Patents
3D printer developments focusing device Download PDFInfo
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- CN216139422U CN216139422U CN202121731452.9U CN202121731452U CN216139422U CN 216139422 U CN216139422 U CN 216139422U CN 202121731452 U CN202121731452 U CN 202121731452U CN 216139422 U CN216139422 U CN 216139422U
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Abstract
The utility model discloses a dynamic focusing device of a 3D printer, which comprises a laser light source, a focusing lens, a reflecting galvanometer and a printing platform, wherein the focusing lens is arranged on the laser light source; the laser light source, the focusing lens and the reflecting galvanometer are arranged in a straight line; the focusing lens is arranged between the laser light source and the reflecting vibrating mirror, so that the diameter of parallel light beams emitted by the laser light source is gradually reduced after the parallel light beams pass through the focusing lens; the positions of the laser light source and the reflecting galvanometer are relatively fixed, and the focusing lens and the reflecting galvanometer slide relatively; the printing platform is located below the reflection vibration mirror, and a hinge point is arranged at the center of the reflection vibration mirror, so that the reflection vibration mirror rotates clockwise or anticlockwise along the hinge point, and the light beams are reflected at different angles and fall on different positions of the printing platform. The focusing lens of the utility model is matched with the linear motor to replace the originally used flat field focusing lens, thereby reducing the manufacturing cost of the whole printer, being not limited on the printing breadth and being capable of printing patterns with any breadth.
Description
Technical Field
The utility model relates to the field of 3D printers, in particular to a dynamic focusing device of a 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 the 3D printing technology, the 3D printing technology is known as the third industrial revolution, and the 3D printer is widely applied to the product manufacturing industry and is widely applied to the fields of industry, medical treatment, teaching, aerospace and the like.
Referring to fig. 1, a conventional printing scheme of a conventional 3D printer is as follows: the optical fiber laser beam is collimated, after being reflected by the scanning galvanometer, the beam is imaged by the flat field focusing lens, the scanned image field is corrected to be straight from bending, and the linear correlation between the imaging point interval and the rotation angle of the scanning galvanometer is kept, so that the uniform pattern printing in a plane is realized. However, the conventional 3D printer is likely to employ a telephoto lens (F-Theta lens), which is expensive and has a limited field of view of a flat-field focusing lens, so that printed patterns are limited in space.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dynamic focusing device of a 3D printer, which aims to solve the problems of high manufacturing cost, limited printing space and the like of the conventional 3D printer.
In order to solve the technical problems, the technical scheme provided by the utility model is as follows:
the utility model relates to a dynamic focusing device of a 3D printer, which comprises a laser light source, a focusing lens, a reflecting galvanometer and a printing platform, wherein the focusing lens is arranged on the laser light source; the laser light source, the focusing lens and the reflecting galvanometer are positioned at the same height and are arranged in a straight line; the focusing lens is arranged between the laser light source and the reflecting galvanometer, and the laser light source faces the focusing lens, so that the diameter of parallel light beams emitted by the laser light source is gradually reduced after the parallel light beams pass through the focusing lens; the positions of the laser light source and the reflecting galvanometer are relatively fixed, and the focusing lens and the reflecting galvanometer slide relatively, so that the diameters of light beams reaching the reflecting galvanometer are different; print platform be located the reflection below of shaking the mirror, the reflection center of shaking the mirror is equipped with the pin joint for the reflection shakes the mirror and rotates along pin joint clockwise or anticlockwise, shakes the angle of mirror through the adjustment reflection and makes the different and different positions that fall on print platform of angle of light beam reflection.
Preferably, the focusing lens is a convex lens.
Preferably, the focusing lens further comprises a linear motor, and the focusing lens is connected with the linear motor.
Preferably, the linear motor further comprises a controller, and the linear motor is in communication connection with the controller.
Preferably, the linear motor is a voice coil motor.
Compared with the prior art, the utility model has the following beneficial effects:
1. the dynamic focusing device of the 3D printer, disclosed by the utility model, replaces the originally used flat field focusing lens by matching the focusing lens with the linear motor, so that the overall manufacturing cost of the printer is reduced.
2. The focusing lens in the dynamic focusing device of the 3D printer, which is disclosed by the utility model, is matched with the linear motor to replace the originally used flat field focusing lens, so that the printing format is not limited by the size of flat field focusing, and patterns with any format can be printed theoretically.
Drawings
FIG. 1 is a schematic diagram of focusing of a conventional 3D printer using a flat-field focusing lens;
fig. 2 is a focusing schematic diagram of a dynamic focusing device of a 3D printer according to the present invention.
In the figure: the laser system comprises a light beam 1, a reflecting galvanometer 2, a flat field focusing lens 3, a printing platform 4, a focusing lens 5, a laser light source 6, a linear motor 7 and a controller 8.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to examples, which are provided for illustration of the present invention but are not intended to limit the scope of the present invention.
Referring to fig. 2, a dynamic focusing device of a 3D printer includes a laser light source 6, a focusing lens 5, a mirror 2, a printing platform 4, a linear motor 7, and a controller 8; the laser light source 6, the focusing lens 5 and the reflecting galvanometer 2 are positioned at the same height and are arranged in a straight line. The focusing lens 5 is a convex lens and is arranged between the laser light source 6 and the reflecting galvanometer 2.
The laser light source 6 faces the focusing lens 5 and is used for emitting parallel light beams 1, and the diameter of the parallel light beams 1 emitted by the laser light source 6 is gradually reduced after passing through the focusing lens 5.
The laser beam source 6 and the reflecting galvanometer 2 are relatively fixed, the focusing lens 5 and the reflecting galvanometer 2 slide relatively, namely the focusing lens 5 is connected with the linear motor 7, the linear motor 7 is in communication connection with the controller 8, the position of the beam 1 which is refracted (namely the initial point with the reduced diameter) is changed by adjusting the position of the focusing lens 5, and the diameters of the beam 1 reaching the reflecting galvanometer 2 are different. In this embodiment, the linear motor 7 is a voice coil motor.
The working principle of the dynamic focusing device of the 3D printer is as follows: the laser light source 6 emits parallel light velocity 1, the light beam 1 is refracted when passing through the focusing lens 5, so that the diameter of the light velocity 1 is reduced, further, the angle of the reflecting vibrating mirror 2 is adjusted, so that the light beam 1 passes through the reflecting vibrating mirror 2 at different reflecting angles, and finally the light beam 1 is reflected to different positions on the printing platform 4; at this time, the controller 8 controls the on-off and running direction of the linear motor 7, so that the focusing lens 5 moves between the galvanometer reflector 2 and the laser light source 6, the position where the light beam 1 starts to be refracted is further adjusted, the diameter of the light beam irradiating the galvanometer reflector 2 is further controlled, the size of the light beam reflected to the printing platform 4 is finally changed, and the purpose of focusing is achieved.
The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. The utility model provides a 3D printer developments focusing device which characterized in that: the laser focusing device comprises a laser light source, a focusing lens, a reflecting galvanometer and a printing platform; the laser light source, the focusing lens and the reflecting galvanometer are positioned at the same height and are arranged in a straight line; the focusing lens is arranged between the laser light source and the reflecting galvanometer, and the laser light source faces the focusing lens, so that the diameter of parallel light beams emitted by the laser light source is gradually reduced after the parallel light beams pass through the focusing lens; the positions of the laser light source and the reflecting galvanometer are relatively fixed, and the focusing lens and the reflecting galvanometer slide relatively, so that the diameters of light beams reaching the reflecting galvanometer are different; print platform be located the reflection below of shaking the mirror, the reflection center of shaking the mirror is equipped with the pin joint for the reflection shakes the mirror and rotates along pin joint clockwise or anticlockwise, shakes the angle of mirror through the adjustment reflection and makes the different and different positions that fall on print platform of angle of light beam reflection.
2. The 3D printer dynamic focusing device of claim 1, wherein: the focusing lens is a convex lens.
3. The 3D printer dynamic focusing device of claim 1, wherein: the focusing lens is connected with the linear motor.
4. The 3D printer dynamic focusing device of claim 3, characterized in that: the linear motor is in communication connection with the controller.
5. The 3D printer dynamic focusing device of claim 3, characterized in that: the linear motor is a voice coil motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121731452.9U CN216139422U (en) | 2021-07-28 | 2021-07-28 | 3D printer developments focusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121731452.9U CN216139422U (en) | 2021-07-28 | 2021-07-28 | 3D printer developments focusing device |
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| Publication Number | Publication Date |
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| CN216139422U true CN216139422U (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121731452.9U Active CN216139422U (en) | 2021-07-28 | 2021-07-28 | 3D printer developments focusing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166953A (en) * | 2022-09-06 | 2022-10-11 | 杭州爱新凯科技有限公司 | 3D printing zooming device and method using axicon |
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2021
- 2021-07-28 CN CN202121731452.9U patent/CN216139422U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115166953A (en) * | 2022-09-06 | 2022-10-11 | 杭州爱新凯科技有限公司 | 3D printing zooming device and method using axicon |
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