CN218799129U - Scanning and powder laying integrated printing head and multi-material 3D printing device - Google Patents
Scanning and powder laying integrated printing head and multi-material 3D printing device Download PDFInfo
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- CN218799129U CN218799129U CN202223163859.3U CN202223163859U CN218799129U CN 218799129 U CN218799129 U CN 218799129U CN 202223163859 U CN202223163859 U CN 202223163859U CN 218799129 U CN218799129 U CN 218799129U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model discloses a scanning and powder-spreading integrated printing head and a multi-material 3D printing device, belonging to the field of additive manufacturing, wherein the printing head comprises a scanning mechanism and a powder-spreading mechanism, and the powder-spreading mechanism is fixed in front of the scanning direction of the scanning mechanism; the scanning mechanism comprises a laser emitter for emitting laser, a focusing lens for focusing the laser and a galvanometer module for reflecting the laser; spread powder mechanism including spreading powder case and powder mouth baffle that falls, be equipped with the powder mouth that falls on the bottom plate of spreading the powder case, powder mouth baffle that falls with the bottom plate sliding connection of spreading the powder case and with spread the cooperation of the powder mouth that falls on the powder bottom plate, a plurality of printer heads are installed on the motion of printing case, form many materials 3D printing device. The laser light source of the scanning mechanism of the printing device is determined according to the materials in the powder paving box, the matched laser light source is adopted to sinter the materials, the sintering quality of the materials is improved, the laser sintering of all the printing materials is carried out synchronously, and the printing efficiency is higher.
Description
Technical Field
The utility model belongs to additive manufacturing (3D prints) field especially relates to a scanning powder laying integrated form beats printer head and many materials 3D printing device.
Background
Laser 3D prints and uses a bundle of laser, after the mirror module that shakes reflects, carries out the mode that the pattern scanned printing on the print work face layer by layer. According to different printing materials, the printing machine has SLA, SLS, SLM and other types. SLA, SLS, SLM adopt the mode in 3D prints and is with the single beam laser of galvanometer reflection, carries out image scanning printing on two-dimentional work plane. Compared with the traditional material reduction manufacturing technology, the 3D printing technology is an advanced material increase manufacturing technology for rapidly manufacturing parts.
With the increasing application field of additive manufacturing, 3D printing is also developing towards more printing heads, larger printing sizes and the like, and there is also an important development direction in practical application, namely, multiple material mixed printing. In the prior art, a multi-material powder spreading and forming 3D printing method and a printing device are disclosed in the invention patent application with application publication No. CN105383059A, the method adopts a three-dimensional model of a multi-material object with color distinguishing materials, data after slicing processing is input into a 3D printer, the same layer comprises a plurality of materials, namely a plurality of colors, firstly, the material a is paved, a color area representing the material a is accurately solidified and formed by adopting selective laser sintering or three-dimensional printing and spraying glue, then, the uncured material a is removed, then, the material B is paved in the same way, the forming material B is solidified, then, the uncured material B is removed, and so on, the materials C and D8230, the working table is moved down by a slice thickness until all the materials of the layer are completely solidified and formed, and the processes are repeated until the whole entity is printed by superposition.
The multi-material 3D printing has the following defects: multiple materials on the same layer are paved for multiple times, and the paved materials are cured after each paving, so that the printing efficiency is low; different metal materials are different in mechanical property, thermal conductivity and the like, and different materials are different in applicable laser light sources, but in the prior art, the same laser light source is adopted to sinter different materials, so that the sintering effect of part of materials is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a powder integrated form is spread in scanning beats printer head and many materials 3D printing device to solve current many materials laser 3D and print inefficiency, to the sintering effect subalternation problem of partial material.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model relates to a scanning and powder-spreading integrated printing head, which comprises a scanning mechanism and a powder-spreading mechanism, wherein the powder-spreading mechanism is fixed in front of the scanning direction of the scanning mechanism; the scanning mechanism comprises a laser emitter for emitting laser, a focusing lens for focusing the laser and a galvanometer module for reflecting the laser; the powder paving mechanism comprises a powder paving box and a powder falling port baffle, a powder falling port is formed in a bottom plate of the powder paving box, and the powder falling port baffle is in sliding connection with the bottom plate of the powder paving box and is matched with the powder falling port in the bottom plate of the powder paving box.
Preferably, the powder falling port is a strip-shaped hole, the two powder falling port baffles are arranged at two ends of the powder falling port respectively, and the sliding directions of the two powder falling port baffles are the same as the length direction of the powder falling port.
Preferably, the powder falling port is a long-strip-shaped hole, the sliding direction of the powder falling port baffle is the same as the length direction of the powder falling port, the powder falling port baffle is provided with a blanking port, the position of the blanking port corresponds to the position of the powder falling port up and down, and the length and the width of the blanking port are respectively smaller than the length and the width of the powder falling port.
Preferably, the powder spreading box is provided with an ultrasonic oscillator, and the ultrasonic oscillator is fixed on the outer side wall of the powder spreading box. The ultrasonic oscillator is used for enabling the powder paving box to pave powder more uniformly.
Preferably, the galvanometer module includes galvanometer module shell, the X axle that is used for making laser along X axle direction scanning shakes the mirror and is used for making laser along the Y axle that is scanned that shakes the mirror, X axle shakes the mirror and the Y axle shakes the mirror and all installs in galvanometer module shell that shakes, shop's powder mechanism fix on the outer wall of galvanometer module shell that shakes.
The utility model also relates to a multi-material 3D printing device based on the scanning powder-laying integrated printing head, which comprises a printing box, a movement mechanism and a plurality of printing heads; the bottom of the printing box is provided with a printing working surface; the moving mechanism is arranged at the top of the printing box and is used for driving all the printing heads; each printing head comprises a scanning mechanism and a powder spreading mechanism, and the powder spreading mechanism is fixed in front of the scanning direction of the scanning mechanism; the scanning mechanism comprises a laser emitter for emitting laser, a focusing lens for focusing the laser and a galvanometer module for reflecting the laser; the powder paving mechanism comprises a powder paving box and a powder falling port baffle, a powder falling port is formed in a bottom plate of the powder paving box, and the powder falling port baffle is in sliding connection with the bottom plate of the powder paving box and is matched with the powder falling port in the bottom plate of the powder paving box.
Preferably, the moving mechanism comprises a first rail and a second rail, two ends of the first rail are fixed on two opposite side plates of the printing box, and a first driving unit for driving the second rail is arranged on the first rail; the second track and the first track are arranged at a right angle, the second track is in sliding connection with the first track and is matched with the first driving unit, a plurality of second driving units equal to the printing heads in number are arranged on the second track, and the printing heads are in sliding connection with the second track and are matched with the corresponding second driving units.
Compared with the prior art, adopt the utility model relates to a technical scheme has following beneficial effect:
1. the utility model relates to a scanning is spread powder integrated form and is beaten printer head and will spread powder mechanism and be fixed in scanning mechanism's the place ahead of scanning direction, scanning mechanism's laser light source confirm according to spreading the material of powder incasement, adopt supporting laser light source to sinter the material, help improving the sintering quality of this material.
2. The utility model relates to a many materials 3D printing device with a plurality of printer heads that contain scanning mechanism and shop powder mechanism install on the motion, every shop's powder mechanism of beating on the printer head all including shop powder case and powder mouth baffle that falls, is equipped with the powder mouth that falls on the bottom plate of shop powder case, powder mouth baffle that falls with shop powder case's bottom plate sliding connection and with shop powder case bottom plate on the cooperation of powder mouth that falls, when carrying out many materials and printing, a plurality of printer head synchronous operation that beat, according to the position of laying of the different materials on the same floor, adjust the position of the corresponding powder mouth baffle that falls who beats printer head, the scanning mechanism that the reuse corresponds carries out synchronous sintering to the material of laying, and then has improved the efficiency of printing.
Drawings
FIG. 1 is a schematic structural diagram of a scanning powder-laying integrated printhead;
FIG. 2 is a bottom view of the powder laying mechanism in example 1;
FIG. 3 is a schematic diagram of a powder laying process of the powder laying mechanism;
fig. 4 is a schematic structural diagram of a multi-material 3D printing apparatus;
FIG. 5 is a top view of a multi-material 3D printing device;
FIG. 6 is a schematic diagram of a powder laying process of a plurality of print heads in a multi-material 3D printing device;
fig. 7 is a bottom view of the powder laying mechanism in embodiment 2.
Reference numerals: 1-printing head, 2-scanning mechanism, 21-focusing lens, 22-galvanometer module, 221-galvanometer module shell, 222-X axis galvanometer, 223-Y axis galvanometer, 3-powder spreading mechanism, 31-powder spreading box, 32-powder falling port baffle, 33-ultrasonic oscillator, 34-powder falling port, 35-powder falling port, 4-printing box, 41-printing working surface, 5-movement mechanism, 51-first track, 52-second track, 6-powder spreading area, 61-powder spreading area of first printing head and 62-powder spreading area of second printing head.
Detailed Description
The present invention will be described in detail below, and it is apparent that the technical solutions in the embodiments of the present invention are described clearly and completely. 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.
Example 1
Referring to fig. 1, the scanning and powder-spreading integrated printhead according to the present embodiment includes a scanning mechanism 2 and a powder-spreading mechanism 3, and the powder-spreading mechanism 3 is fixed in front of the scanning mechanism 2 in the scanning direction.
The scanning mechanism 2 comprises a laser emitter (not shown in the figure) for emitting laser, a focusing lens 21 for focusing the laser and a galvanometer module 22 for reflecting the laser; the galvanometer module 22 comprises a galvanometer module shell 221, an X-axis galvanometer 222 used for scanning the laser along the X-axis direction and a Y-axis galvanometer 223 used for scanning the laser along the Y-axis direction, wherein the X-axis galvanometer 222 and the Y-axis galvanometer 333 are all arranged in the galvanometer module shell and are respectively controlled to rotate by independent motors.
Shop's powder mechanism 3 fix on the outer wall of galvanometer module shell 221, shop's powder mechanism 3 is equipped with ultrasonic oscillator 33 including shop's powder case 31 and powder mouth baffle 32 that falls on shop's powder case 31, ultrasonic oscillator 33 fixes on shop's powder case 31's lateral wall, can make shop's powder case 31 shop powder more evenly. Referring to fig. 2, a bottom plate of the powder spreading box 31 is provided with a powder falling port 34, and the powder falling port 34 is a long strip-shaped hole and has a narrow width in a direction parallel to the moving direction of the printing head; the powder falling port baffle 32 is arranged below the bottom plate of the powder spreading box 31 and is in sliding connection with the bottom plate of the powder spreading box 31; in this embodiment, powder falling port baffle 32 sets up two, two powder falling port baffles 32 set up respectively in the both ends of powder falling port 34, two powder falling port baffles 34 are respectively by two motor drive of printing device's control mechanism control, and make two powder falling port baffles 34 along the length direction reciprocating sliding of powder falling port 34, change the length and the position that powder falling port 34 was not blocked, make and beat printer head and spread the powder according to the printing pattern dimensional requirement of this material, realize the cooperation of powder falling port baffle 34 and the powder falling port 34 on the bottom plate.
Referring to fig. 3, a powder laying method of the powder laying mechanism 3 for a single print head: generating a print file of the single print head based on a single-layer print file, the print file including a powder-spread region of a certain printing material; the powder spreading mechanism is moved along the scanning direction, and in the moving process, the control mechanism drives the motors connected with the two powder falling port baffles 34 according to the printing edge of the printed file, so that the two powder falling port baffles 34 move back and forth along the length direction of the powder falling port 34, and then part of the powder falling port 34 is blocked, and a powder spread area 6 is formed.
The printing head is applied to a multi-material 3D printing device, and as shown in fig. 1, 4 and 5, the multi-material 3D printing device based on the scanning and powder-spreading integrated printing head includes a printing box 4, a moving mechanism 5 and a plurality of printing heads 1, in this embodiment, two printing heads 1 are taken as an example to describe the scheme in detail, but not limited to using two printing heads 1. The bottom of the printing box 4 is provided with a printing working surface 41; the moving mechanism 5 is arranged at the top of the printing box and used for driving all the printing heads 1, the moving mechanism 5 comprises a first rail 51 and a second rail 52, two ends of the first rail 51 are fixed on two opposite side plates of the printing box 4, and a first driving unit (not shown in the figure) for driving the second rail 52 is arranged on the first rail 51; the second track 52 is arranged at a right angle to the first track 51, the second track 52 is connected with the first track 51 in a sliding manner and is matched with the first driving unit, a plurality of second driving units (not shown in the figure) with the same number as the printing heads 1 are arranged on the second track 52, and the printing heads 1 are connected with the second track 52 in a sliding manner and are matched with the corresponding second driving units; the first driving unit and the second driving unit adopt linear motors.
The printing method of the multi-material 3D printing device comprises the following steps: referring to fig. 6, the powder spreading mechanisms 3 of the two print heads 1 respectively spread powder according to respective print files to complete the spreading of the two materials, so as to form a powder spread area 61 of the first print head and a powder spread area 62 of the second print head, while spreading the powder, the scanning mechanism 2 located behind the scanning direction of the powder spreading mechanism 3 emits a corresponding laser light source, and after the laser light source is focused by the focusing lens 21, the laser light source is reflected by the X-axis galvanometer 222 and the Y-axis galvanometer 223 to perform laser sintering in the corresponding powder spread area, so as to complete the synchronous printing of the two materials.
Example 2
Compared with embodiment 1, the present embodiment is slightly different from embodiment 1 in only the powder spreading mechanism 3, specifically: referring to fig. 7, a bottom plate of the powder laying box 31 is provided with a powder falling port 34, and the powder falling port 34 is a long strip-shaped hole and has a narrow width parallel to the moving direction of the printing head; the powder falling port baffle 32 is arranged below the bottom plate of the powder spreading box 31 and is connected with the bottom plate of the powder spreading box 31 in a sliding manner; in this embodiment, the powder falling opening baffle 32 is provided with one block, the sliding direction of the powder falling opening baffle 32 is the same as the length direction of the powder falling opening 34, the powder falling opening baffle 32 is provided with the blanking opening 35, the position of the blanking opening 35 corresponds to the position of the powder falling opening 32 up and down, the length and the width of the blanking opening 35 are respectively smaller than the length and the width of the powder falling opening 32, and the blanking opening 35 can be a through hole in any shape such as a circle and a square. The powder falling opening baffle 32 is driven by a motor controlled by a control mechanism of the printing device, so that the powder falling opening baffle 32 reciprocates along the length direction of the powder falling opening 32, the position of the powder falling opening 35 is changed relative to the powder falling opening 32, and the powder leakage is realized through the powder falling opening 35 after the material enters the powder falling opening 32.
The powder laying method of the powder laying mechanism 3 for a single print head: generating a print file of the single print head based on a single-layer print file, wherein the print file comprises a powder spreading area of a certain printing material; and (3) moving the powder paving mechanism along the scanning direction, wherein in the moving process, the control mechanism drives a motor of the powder dropping port baffle 34 according to the printing edge of the printed file, so that the position of the powder dropping port 35 relative to the powder dropping port 32 is continuously changed, the powder paving in a specified area is realized, and the powder paved area 6 is formed.
The present invention has been described in detail with reference to the embodiments, but the above description is only for the purpose of describing the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the scope of the patent coverage of the present invention.
Claims (7)
1. The utility model provides a scanning powder laying integrated form printer head which characterized in that: the powder spreading mechanism is fixed in front of the scanning direction of the scanning mechanism; the scanning mechanism comprises a laser emitter for emitting laser, a focusing lens for focusing the laser and a galvanometer module for reflecting the laser; the powder paving mechanism comprises a powder paving box and a powder falling port baffle, a powder falling port is arranged on a bottom plate of the powder paving box, and the powder falling port baffle is connected with the bottom plate of the powder paving box in a sliding mode and is matched with the powder falling port on the bottom plate of the powder paving box.
2. A scanning powdering integrated printhead according to claim 1, characterized in that: the powder falling port is a long strip-shaped hole, the two powder falling port baffles are arranged at two ends of the powder falling port respectively, and the sliding directions of the two powder falling port baffles are the same as the length direction of the powder falling port.
3. A scanning powdering integrated printhead according to claim 1, characterized in that: the powder falling port is a long strip-shaped hole, the sliding direction of the powder falling port baffle is the same as the length direction of the powder falling port, a material falling port is arranged on the powder falling port baffle, the position of the material falling port corresponds to the position of the powder falling port up and down, and the length and the width of the material falling port are respectively smaller than the length and the width of the powder falling port.
4. A scanning powdering integrated printhead according to claim 1, wherein: the powder paving box is provided with an ultrasonic oscillator which is fixed on the outer side wall of the powder paving box.
5. A scanning powdering integrated printhead according to claim 1, characterized in that: the mirror module that shakes include shake mirror module shell, be used for making laser shake the mirror and be used for making laser shake the mirror along the Y axle that the X axle direction scanned, the X axle shakes the mirror and the Y axle shakes the mirror and all installs in the mirror module shell that shakes with the Y axle, shop's powder mechanism fix on the outer wall of mirror module shell that shakes.
6. A multi-material 3D printing device based on a scanning and powder-laying integrated printhead according to any one of claims 1 to 5, characterized in that: the printing device comprises a printing box, a movement mechanism and a plurality of printing heads; the bottom of the printing box is provided with a printing working surface; the moving mechanism is arranged at the top of the printing box and is used for driving all the printing heads; each printing head comprises a scanning mechanism and a powder spreading mechanism, and the powder spreading mechanism is fixed in front of the scanning direction of the scanning mechanism; the scanning mechanism comprises a laser emitter for emitting laser, a focusing lens for focusing the laser and a galvanometer module for reflecting the laser; the powder paving mechanism comprises a powder paving box and a powder falling port baffle, a powder falling port is arranged on a bottom plate of the powder paving box, and the powder falling port baffle is connected with the bottom plate of the powder paving box in a sliding mode and is matched with the powder falling port on the bottom plate of the powder paving box.
7. The multi-material 3D printing device according to claim 6, wherein: the moving mechanism comprises a first rail and a second rail, two ends of the first rail are fixed on two opposite side plates of the printing box, and a first driving unit for driving the second rail is arranged on the first rail; the second track and the first track are arranged at a right angle, the second track is in sliding connection with the first track and is matched with the first drive unit, a plurality of second drive units equal to the printing heads in number are arranged on the second track, and the printing heads are all in sliding connection with the second track and are matched with the corresponding second drive units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223163859.3U CN218799129U (en) | 2022-11-28 | 2022-11-28 | Scanning and powder laying integrated printing head and multi-material 3D printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223163859.3U CN218799129U (en) | 2022-11-28 | 2022-11-28 | Scanning and powder laying integrated printing head and multi-material 3D printing device |
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| Publication Number | Publication Date |
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| CN218799129U true CN218799129U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223163859.3U Active CN218799129U (en) | 2022-11-28 | 2022-11-28 | Scanning and powder laying integrated printing head and multi-material 3D printing device |
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| CN (1) | CN218799129U (en) |
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- 2022-11-28 CN CN202223163859.3U patent/CN218799129U/en active Active
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