CN105563845A - 3D (three-dimensional) laser printer - Google Patents
3D (three-dimensional) laser printer Download PDFInfo
- Publication number
- CN105563845A CN105563845A CN201510747126.XA CN201510747126A CN105563845A CN 105563845 A CN105563845 A CN 105563845A CN 201510747126 A CN201510747126 A CN 201510747126A CN 105563845 A CN105563845 A CN 105563845A
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- China
- Prior art keywords
- photosensitive drums
- laser
- transfer roll
- workbench
- upper frame
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/221—Machines other than electrographic copiers, e.g. electrophotographic cameras, electrostatic typewriters
- G03G15/224—Machines for forming tactile or three dimensional images by electrographic means, e.g. braille, 3d printing
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Abstract
The invention provides a 3D (three-dimensional) laser printer. The 3D laser printer comprises an upper frame and a lower frame. A photosensitive drum, a laser and a static generator are arranged in the upper frame, and the photosensitive drum is coupled to a powder feeding roller. The static generator electrifies the surface of the photosensitive drum in rotation, the laser is capable of scanning the surface of the photosensitive drum point by point according to instruction data, the lower portion of the photosensitive drum is coupled to a transfer roller, and a linear electrode extending axially is arranged in the transfer roller. A laser sintering part capable of forming a vertically downward laser plane is arranged in the transfer roller which is transparent. A workbench capable of horizontally reciprocating in the lower frame is arranged below the transfer roller, a moving direction of the workbench is in orthogonality with axes of the photosensitive drum and the transfer roller, and the photosensitive drum and the transfer roller respectively rotate by integral circles when the workbench moves from an extreme position of one side to the other side. A longitudinal sliding guide mechanism is arranged between the upper frame and the lower frame. The 3D laser printer is high in printing speed.
Description
Technical field
The present invention relates to field of electromechanical equipment, especially, is a kind of 3D printer.
Background technology
At present, the development of 3D printer is very fast, and the modal hot melten type 3D printer that is still, its principle is similar to plane ink-jet printer, for each layer plane of printer model, the shower nozzle of printer needs pointwise to navigate to each position in this plane, be equivalent to each pixel of this plane, and molten fat is shootd out in pointwise, the speed that this printing type makes model print is extremely slow, a less part just needs cost a few hours to have printed, and significantly limit the speed that model is drawn a design.
For this reason, be proposed the laser 3D printer of speed at present, as SLS printer, but its mode still adopting point by point scanning to sinter prints, and because each pixel all needs certain heat time to sinter, therefore print speed is still restricted.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of laser 3D printer, this printer has print speed faster.
The technical scheme that actualizing technology object of the present invention adopts is: this laser 3D printer comprises upper frame, underframe; Include photosensitive drums in described upper frame, described photosensitive drums is coupled in the powder feeding roller being located at powder storehouse, and the powder in powder storehouse, in rotary course, can be transported to photosensitive drum surface by described powder feeding roller; Laser instrument, electrostatic device is also included in described upper frame; Described electrostatic device is roll, is pressed on photosensitive drum surface, in photosensitive drums rotary course, make photosensitive drum surface charged; Described laser instrument can according to director data in photosensitive drum surface point by point scanning; Be coupled below described photosensitive drums a transfer roll, and have the wire electrode along Axis Extension in described transfer roll, the polarity of described wire electrode is contrary with the charge polarity of described photosensitive drum surface; The transparent shape of described transfer roll, has the sintering laser part of the lasing area that can produce straight down in it, described lasing area exposes to that bus of the bottom of described transfer roll; It is workbench below described transfer roll, described workbench is by driving mechanisms control, horizontal reciprocating movement can be made in described underframe, and the axis vertical take-off of the moving direction of workbench and described photosensitive drums, transfer roll, when workbench moves to the extreme position of opposite side from the extreme position of side, described photosensitive drums, transfer roll turn over integer multiples just respectively; Have between described upper frame, underframe and make upper and lower frames can only make the sliding guide mechanism relatively vertically moved.
As preferably, described sintering laser part comprises the rotating cylinder in the rotating shaft being placed on described transfer roll, and along the axially extended laser strip of rotating cylinder, the lasing area that the axis of described rotating cylinder and laser strip are launched is coplanar; The center of gravity of described sintering laser part falls within described laser strip, and this center of gravity is also coplanar with described lasing area; Thus can make this sintering laser part under Gravitative Loads, form lasing area straight down all the time.
As preferably, one piece of metallic plate is established at the interval of described photosensitive drums and transfer roll, and crack together with the contact wire that described metallic plate only contacts with each other at photosensitive drums and transfer roll is formed, can realize contacting to make photosensitive drums and transfer roll; By this scheme, the region of the electric field on photosensitive drums and transfer roll beyond described contact wire can be made not interfere with each other, avoid powder and offset owing to being subject to the impact of the other side's electric field in photosensitive drums or transfer roll surface, be improved to make printing precision.
As preferably, the driving mechanism controlling described workbench is stepper motor, and described stepper motor is coupled to described transfer roll and photosensitive drums by transmission mechanism, to guarantee that workbench, transfer roll, photosensitive drums are synchronized with the movement, to guarantee printing precision.
As preferably, the sliding guide mechanism between described upper frame, underframe comprises guide rod and guide pin bushing, and described guide pin bushing inside is in communication with the outside.
Beneficial effect of the present invention is: this laser 3D printer operationally, the electrostatic that photosensitive drum surface is distributed by the scanning formation rule of described laser instrument divides cloth cover, described electrostatic divides cloth cover corresponding with the current cross-section shape of printer model, after this electrostatic divides the cloth cover absorption material powder that powder feeding roller is sent here, photosensitive drums forms a model cross-sectional layers be curled, this model cross-sectional layers is transferred on transfer roll immediately, and in the process of sintering laser part continuous sintering in the continuous rotation and transfer roll of transfer roll, this model cross-sectional layers is by the upper surface of continuous laying at model, after often printing a layer model cross section, under the support in model cross section, upper frame is elevated one deck automatically, then the printing in next layer model cross section is continued, this printer is due to without the need to carrying out pointwise sintering to model cross section, and therefore print speed SLS printer, has higher printing effect.
Accompanying drawing explanation
Fig. 1 is that in an embodiment of this laser 3D printer, working table movement is to the schematic diagram during extreme position of right side.
Fig. 2 is in Fig. 1 embodiment, and working table movement is to the schematic diagram during extreme position of left side.
Fig. 3 is in this laser 3D printer, the electric field schematic diagram of the wire electrode in transfer roll.
Fig. 4 is in this laser 3D printer, and the end of the sintering laser part in transfer roll is to schematic diagram.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
In the embodiment shown in Fig. 1-Fig. 4, this laser 3D printer comprises upper frame 1, underframe 2; Include photosensitive drums 11 in described upper frame 1, described photosensitive drums 11 is coupled in the powder feeding roller 122 being located at powder storehouse 121, and the powder in powder storehouse 121, in rotary course, can be transported to photosensitive drums 11 surface by described powder feeding roller 122; Laser instrument 13, electrostatic device 14 is also included in described upper frame 1; Described electrostatic device 14, in roll, is pressed on photosensitive drums 11 surface, makes photosensitive drums 11 surface charged in photosensitive drums 11 rotary course; Described laser instrument 13 can according to director data in the surperficial point by point scanning of photosensitive drums 11.
The course of work and the principle of described photosensitive drums 11, powder feeding roller 122, laser instrument 13, electrostatic device 14 are identical with the principle of common monochrome laser printer.After the powered surfaces of photosensitive drums 11 is subject to laser beam flying, the electrostatic charge of the location point be scanned is excluded, thus makes the photosensitive drum surface do not arrived by laser scanning form the charging zone consistent with model cross section, to adsorb material powder.
Be coupled below described photosensitive drums 11 transfer roll 15, and have the wire electrode 151 along Axis Extension in described transfer roll 15, the polarity of described wire electrode 151 is contrary with the charge polarity on described photosensitive drums 11 surface.Under the impact of electrostatic field not considering photosensitive drums 11 surface, as schematically shown in Figure 3, dotted line represents electric field line to the electric field of wire electrode 151.
The transparent shape of described transfer roll 15, has the sintering laser part of the lasing area that can produce straight down in it, described lasing area exposes to that bus of the bottom of described transfer roll 15; Particularly, as shown in Figure 4, described sintering laser part comprises the rotating cylinder 152 in the rotating shaft being placed on described transfer roll, and along the axially extended laser strip 153 of rotating cylinder 152, the lasing area that the axis of described rotating cylinder 152 and laser strip are launched is coplanar; The center of gravity of described sintering laser part falls within described laser strip, and this center of gravity is also coplanar with described lasing area; Thus can make this sintering laser part under Gravitative Loads, form lasing area straight down as the dotted line arrows all the time.
Be workbench 21 below described transfer roll 15, described workbench 21 controls by driving mechanism 22, horizontal reciprocating movement can be made in described underframe 2, and the axis vertical take-off of the moving direction of workbench 21 and described photosensitive drums 11, transfer roll 15, when workbench 21 moves to the extreme position of opposite side from the extreme position of side, described photosensitive drums 11, transfer roll 15 turn over integer multiples just respectively; Have between described upper frame 1, underframe 2 and make upper and lower frames can only make the sliding guide mechanism 23 relatively vertically moved.In the present embodiment, the driving mechanism 22 controlling described workbench 21 is stepper motor; Sliding guide mechanism 23 between upper frame 1, underframe 2 comprises guide rod and guide pin bushing, and described guide pin bushing inside is in communication with the outside, then, under the Gravitative Loads of upper frame 1, transfer roll 15 can be made to keep stable pressure with the upper surface of printer model.
In addition, described stepper motor can be made to be coupled to described transfer roll 15 and photosensitive drums 11 by transmission mechanism, to guarantee that workbench 21, transfer roll 15, photosensitive drums 11 are synchronized with the movement, to improve printing precision.
In the present embodiment, also every establishing one piece of metallic plate 16 between described photosensitive drums 11 and transfer roll 15, crack together with the contact wire that described metallic plate 16 only contacts with each other at photosensitive drums 11 and transfer roll 15 is formed, can realize contacting to make photosensitive drums 11 and transfer roll 15; By this scheme, photosensitive drums 11 can be made not interfere with each other with the region of electric field beyond described contact wire on transfer roll 15, avoid powder and offset owing to being subject to the impact of the other side's electric field in photosensitive drums 11 or transfer roll 15 surface, be improved to make printing precision.
Above-mentioned laser 3D printer operationally, the electrostatic that photosensitive drums 11 surface is distributed by the scanning formation rule of described laser instrument 13 divides cloth cover, described electrostatic divides cloth cover corresponding with the current cross-section shape of printer model, after this electrostatic divides the cloth cover absorption material powder that powder feeding roller is sent here, photosensitive drums forms a model cross-sectional layers be curled, this process is consistent with laser printer, and technology maturation is stablized.
After this described model cross-sectional layers is transferred on transfer roll 15 immediately, and in the process of sintering laser part continuous sintering in the continuous rotation and transfer roll of transfer roll 15, make this model cross-sectional layers by the upper surface of continuous laying at model 3, after often printing a layer model cross section, under the support in model cross section, upper frame 1 is elevated one deck automatically, then continues the printing in next layer model cross section; This printer is due to without the need to carrying out pointwise sintering to model cross section, and therefore print speed SLS printer, has higher printing effect.Although it should be noted that this printer also uses the mode of point by point scanning for photosensitive drums 11, in this process, for each point scanning without the need to wait for, therefore speed is exceedingly fast.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a laser 3D printer, is characterized in that: comprise upper frame (1), underframe (2); Photosensitive drums (11) is included in described upper frame (1), described photosensitive drums (11) is coupled in the powder feeding roller (122) being located at powder storehouse (121), powder in powder storehouse (121), in rotary course, can be transported to photosensitive drums (11) surface by described powder feeding roller (122); Laser instrument (13), electrostatic device (14) is also included in described upper frame (1); Described electrostatic device (14), in roll, is pressed on photosensitive drums (11) surface, makes photosensitive drums (11) surface charged in photosensitive drums (11) rotary course; Described laser instrument (13) can according to director data in photosensitive drums (11) surperficial point by point scanning; Described photosensitive drums (11) below coupling transfer roll (15), has the wire electrode (151) along Axis Extension in described transfer roll (15), the polarity of described wire electrode (151) is contrary with the charge polarity on described photosensitive drums (11) surface; Described transfer roll (15) transparent shape, has the sintering laser part of the lasing area that can produce straight down in it, described lasing area exposes to that bus of the bottom of described transfer roll (15); Described transfer roll (15) below is workbench (21), described workbench (21) controls by driving mechanism (22), horizontal reciprocating movement can be made in described underframe (2), and the axis vertical take-off of the moving direction of workbench (21) and described photosensitive drums (11), transfer roll (15), when workbench (21) moves to the extreme position of opposite side from the extreme position of side, described photosensitive drums (11), transfer roll (15) turn over integer multiples just respectively; There is between described upper frame (1), underframe (2) sliding guide mechanism (23) making upper and lower frames can only do relatively to vertically move.
2. laser 3D printer according to claim 1, it is characterized in that: described sintering laser part comprises the rotating cylinder (152) in the rotating shaft being placed on described transfer roll (15), and along the axially extended laser strip of rotating cylinder (153), the lasing area that the axis of described rotating cylinder (152) and laser strip (153) are launched is coplanar; The center of gravity of described sintering laser part falls within described laser strip (153), and this center of gravity is also coplanar with described lasing area, to make this sintering laser part under Gravitative Loads, forms lasing area straight down all the time.
3. laser 3D printer according to claim 1, it is characterized in that: one piece of metallic plate (16) is established at the interval of described photosensitive drums (11) and transfer roll (15), crack together with the contact wire that described metallic plate (16) only contacts with each other at photosensitive drums (11) and transfer roll (15) is formed, can realize contacting with transfer roll (15) to make photosensitive drums (11).
4. laser 3D printer according to claim 1, it is characterized in that: the driving mechanism (22) controlling described workbench (21) is stepper motor, and described stepper motor is coupled to described transfer roll (15) and photosensitive drums (11) by transmission mechanism, be synchronized with the movement to make workbench (21), transfer roll (15), photosensitive drums (11).
5. laser 3D printer according to claim 1, is characterized in that: the sliding guide mechanism (23) between described upper frame (1), underframe (2) comprises guide rod and guide pin bushing, and described guide pin bushing inside is in communication with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747126.XA CN105563845A (en) | 2015-11-06 | 2015-11-06 | 3D (three-dimensional) laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510747126.XA CN105563845A (en) | 2015-11-06 | 2015-11-06 | 3D (three-dimensional) laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105563845A true CN105563845A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510747126.XA Pending CN105563845A (en) | 2015-11-06 | 2015-11-06 | 3D (three-dimensional) laser printer |
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| CN (1) | CN105563845A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956429A (en) * | 2017-05-29 | 2017-07-18 | 苏州环之道智能科技有限公司 | A kind of 3D printer of stabilization |
| CN108115931A (en) * | 2017-11-24 | 2018-06-05 | 浙江大学 | A kind of 3 D-printing device and its oscillatory type power spreading device |
| RU2745247C1 (en) * | 2019-05-27 | 2021-03-22 | Хуачжунский Университет Науки И Технологии | Apparatus for selective laser sintering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103331911A (en) * | 2013-06-18 | 2013-10-02 | 珠海天威飞马打印耗材有限公司 | Rapid three-dimensional printing molding equipment and three-dimensional entity object molding method |
| CN104298084A (en) * | 2014-10-22 | 2015-01-21 | 珠海天威飞马打印耗材有限公司 | Developing agent, three-dimensional printing machine and three-dimensional printing method |
| CN104369374A (en) * | 2014-10-14 | 2015-02-25 | 清华大学 | Naked eye three-dimensional presenting device, and naked eye three-dimensional presenting device manufacturing system and method |
-
2015
- 2015-11-06 CN CN201510747126.XA patent/CN105563845A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331911A (en) * | 2013-06-18 | 2013-10-02 | 珠海天威飞马打印耗材有限公司 | Rapid three-dimensional printing molding equipment and three-dimensional entity object molding method |
| CN104369374A (en) * | 2014-10-14 | 2015-02-25 | 清华大学 | Naked eye three-dimensional presenting device, and naked eye three-dimensional presenting device manufacturing system and method |
| CN104298084A (en) * | 2014-10-22 | 2015-01-21 | 珠海天威飞马打印耗材有限公司 | Developing agent, three-dimensional printing machine and three-dimensional printing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956429A (en) * | 2017-05-29 | 2017-07-18 | 苏州环之道智能科技有限公司 | A kind of 3D printer of stabilization |
| CN108115931A (en) * | 2017-11-24 | 2018-06-05 | 浙江大学 | A kind of 3 D-printing device and its oscillatory type power spreading device |
| CN108115931B (en) * | 2017-11-24 | 2020-03-17 | 浙江大学 | Three-dimensional printing device and vibrating powder paving device thereof |
| RU2745247C1 (en) * | 2019-05-27 | 2021-03-22 | Хуачжунский Университет Науки И Технологии | Apparatus for selective laser sintering |
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Application publication date: 20160511 |
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