CN204603301U - A kind of device improving selective laser sintering 3D printing part strength - Google Patents
A kind of device improving selective laser sintering 3D printing part strength Download PDFInfo
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- CN204603301U CN204603301U CN201520277091.3U CN201520277091U CN204603301U CN 204603301 U CN204603301 U CN 204603301U CN 201520277091 U CN201520277091 U CN 201520277091U CN 204603301 U CN204603301 U CN 204603301U
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- powder
- quartz glass
- glass panel
- cylinder
- sintering
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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 kind of device improving selective laser sintering 3D printing part strength, device mainly comprises laser cell, paving powder unit, compressing unit and powder heating unit, parallel placement one piece identical quartz glass panel piston-shaped with moulding cylinder directly over shaping piston, quartz glass panel realizes moving up and down by stepper motor and ball-screw, after every layer of sintering completes, face glass moves up certain distance, powder-laying roller can be made to pass through smoothly, spread powder process next time, use optical quartz glass panel not only through laser but also can apply thrust powder compaction, can avoid making inside after sintering process occur that hole affects product strength because there is pore in powder, and improve products surface quality.The most topsheet surface of moulded products does not occur bonding with quartz glass plate contact.Also after can spreading pruinescence sintering, the compacting of quartz glass panel is solidified to moulded products surface cool, then takes out moulded products after removing quartz glass panel.
Description
Technical field
The utility model relates to the mechanism in a kind of rapid forming equipment, especially relates to the mechanism in a kind of SLS selective laser sintering 3D printing device.
Background technology
Rapid shaping technique (be also called RP technique, Rapid Prototyping Manufacturing, be called for short RPM), prints also referred to as 3D.This technology, according to the three-dimensional modeling data of object, manufactures entity by former in the mode successively superposed, and it can overcome the special construction obstacle that current traditional machining cannot realize.The simplification that can realize any complex components is produced.Existing 3D printing technique is mainly divided into, fused glass pellet (FDM), selective laser sintering (SLS), stereolithography (SLA), digital light process (DLP).
For selective laser sintering (SLS), the basic implementation of existing apparatus is: adopt laser layering sintering solid powder selectively, and makes the cured layer of sinter molding superpose the part generating required form. its whole technical process comprises foundation and data processing, paving powder, sintering and the post processing etc. of cad model.Whole process unit is made up of powder cylinder and moulding cylinder, and during work, powder cylinder piston (powder feeding piston) rises, by powder-laying roller by powder uniform spreading last layer on moulding cylinder piston (working piston).Computer controls the two-dimensional scan track of laser beam according to the hierarchical model of prototype, and sintering solid dusty material is to form an aspect of part selectively.After having sintered one deck, working piston declines a thickness, and paving powder system spreads new powder again.Control laser beam and scan the new layer of sintering again, so move in circles, be layering, until 3 d part is shaping.Finally, by unsintered Powder Recovery in powder cylinder, and profiled member is taken out.
At present, the dusty material of Selective Laser Sintering is loose, is still granular through laser sintered rear surface, and interior containing irregular hole, causes finished surface coarse, and intensity is not enough, is difficult to meet industrial requirements.So need a kind of device improving selective laser sintering 3D printing part strength and surface quality.
Utility model content
The utility model is for above-mentioned shortcoming, design a kind of device and compress every layer of powder, eliminate the pore in powder, to make in selective laser sintering process adhesion between powder stronger, improve forming part bulk strength, make the intensity of selective laser sintering part and surface quality meet industrial requirements.
The technical solution of the utility model is: a kind of device improving selective laser sintering 3D printing part strength, and mainly comprise laser cell, paving powder unit, compressing unit and powder heating unit, laser cell mainly comprises CO
2generating laser and scanning galvanometer; Compressing unit mainly comprises moulding cylinder, moulding cylinder piston, powder cylinder, powder cylinder piston, moulding cylinder stepper motor and powder cylinder stepper motor, and moulding cylinder and powder cylinder walk abreast placed adjacent; Paving powder unit mainly comprises powder-laying roller, optical quartz glass plate, controls leading screw that quartz glass moves up and down and compress stepper motor, powder-laying roller is placed on above moulding cylinder and powder cylinder, paving powder scrapes above moulding cylinder by powder-laying roller above powder cylinder, powder-laying roller spreads powder thickness at every turn in moulding cylinder, optical quartz glass plate is positioned at above moulding cylinder piston, and the sectional dimension of optical quartz glass plate is identical with the sectional dimension of moulding cylinder piston; Powder heating unit mainly comprises resistance heater and thermocouple; Laser cell is positioned at above optical quartz glass plate.
The utility model is a kind of improves the device that selective laser sintering 3D prints part strength, is cut into slices, plans laser sintered path, by computer program control CO by microcomputer to printer model
2the rotation of generating laser switch and scanning galvanometer, makes laser beam at powder surface according to microcomputer path planning sintering, and close generating laser after this layer of sintering terminates, and opens generating laser when lower one deck sintering starts.
The utility model is a kind of improves the device that selective laser sintering 3D prints part strength, before every layer prints, moulding cylinder piston declines the height of a thickness, powder cylinder piston rises the height of a thickness, powder-laying roller moves from powder cylinder to moulding cylinder, is evenly paved with one deck powder at moulding cylinder piston face.
The utility model is a kind of improves the device that selective laser sintering 3D prints part strength, parallel placement one piece identical quartz glass panel piston-shaped with moulding cylinder directly over shaping piston, quartz glass panel is moved up and down and is realized by compression stepper motor and ball-screw.After paving powder process terminates, face glass moves down, and make a certain amount of stopping afterwards of powder bed deformation, laser starts selective sintering process, due to CO
2the laser that laser instrument sends is ultraviolet laser, and optical quartz glass is best ultraviolet laser light transmissive material, so optical quartz glass panel can not affect laser sintered process.Sinter rear face glass to move up certain distance, powder-laying roller can have been made to pass through smoothly, spread powder process next time.
The utility model is a kind of improves the heating unit that selective laser sintering 3D prints the device of part strength, comprises resistance heater and thermocouple.Under resistive heater heats powder temperature to fusing point, thermocouple keeps powder temperature constant.
A kind of manufacturing process improving the device of selective laser sintering 3D printing part strength of employing the utility model is: the first step, paving powder is joined in powder cylinder, open under resistive heater heats dusty material temperature to fusing point, rely on thermocouple to keep powder temperature constant in setting value, moulding cylinder piston moves and quartz glass plate contact; Second step, adjustment moulding cylinder piston declines a thickness, and face glass moves up certain distance, and powder-laying roller can be passed through smoothly, and quartz glass panel moves up and down by compressing stepper motor and ball-screw realizes; 3rd step, powder cylinder rises the height of a thickness, and powder-laying roller moves from powder cylinder to moulding cylinder, is evenly paved with one deck powder at moulding cylinder piston face; 4th step, face glass moves down, and makes a certain amount of stopping afterwards of powder bed deformation; 5th step, CO
2generating laser starts selective sintering process, CO
2generating laser sends ultraviolet laser beam, laser beam passes through conputer controlled through the rotational angle of the powder bed surface scan galvanometer that scanning galvanometer reflectance-transmittance quartz glass panel is radiated on moulding cylinder piston, three-dimensional modeling data is by computer section, path planning, then laser is made to be radiated at powder surface according to computer institute path planning by the rotation of gated sweep galvanometer, every layer of sintering terminates rear closedown generating laser, opens generating laser when lower one deck sintering starts; Repeat above-mentioned second step to the 5th step, until last one deck paving powder is completed on moulding cylinder piston face, quartz glass panel lifts a bit of distance by after the compacting of paving powder, then carries out laser beam sintering, and so far moulded products completes.In the end during one deck paving powder sintering, because quartz glass panel does not contact with paving powder, the most topsheet surface of moulded products can not due to quartz glass plate contact and occur bonding.The process of last one deck paving powder also can repeat second step to the 5th step, and after paving pruinescence sintering, the compacting of quartz glass panel is solidified to moulded products surface cool, then takes out moulded products after removing quartz glass panel.
The utility model uses optical quartz glass panel not only through laser but also can apply thrust powder compaction, can avoid making inside after sintering process occur that hole affects product strength because there is pore in powder, and improve products surface quality.
Accompanying drawing explanation
Fig. 1 is a kind of operating diagram improving the device of selective laser sintering 3D printing part strength of the utility model.
In figure: 1-CO
2generating laser; 2-scanning galvanometer; The compression stepper motor of 3-control both optical quartz glass movement and leading screw; 4-optical quartz glass panel; 5-powder; 6-moulded products; 7-moulding cylinder piston; 8-powder cylinder piston; 9-powder-laying roller; 10-resistance heater and thermocouple.
Detailed description of the invention
The utility model provides a kind of device improving selective laser sintering 3D printing part strength, as shown in Figure 1, is made up of sharp laser cell, paving powder unit, compressing unit and powder heating unit; Laser cell mainly comprises CO
2generating laser 1 and scanning galvanometer 2; Paving powder unit mainly comprises powder 5, moulding cylinder piston 7, powder cylinder piston 8 and powder-laying roller 9; Compressing unit comprises compression stepper motor (not shown in FIG.) and leading screw 3, the optical quartz glass panel 4 of the movement of control both optical quartz glass panel; Heating unit comprises resistance heater and thermocouple 10.
A kind of selective laser sintering 3D that improves of the utility model prints in the device of part strength, CO
2generating laser 1 sends ultraviolet laser beam, and laser beam reflexes to the powder bed surface on moulding cylinder piston 7 through scanning galvanometer 2; Scanning mirror shake 2 rotate through conputer controlled, three-dimensional modeling data by computer section, path planning, then by the rotation of gated sweep galvanometer 2 make laser beam according to computer institute path planning be radiated at powder 5 surface; Powder cylinder piston 8 rises the height of a thickness, and powder-laying roller 9 moves from powder cylinder to moulding cylinder, is paved with one deck powder 5 at moulding cylinder piston 7 surface uniform; Parallel placement one piece of optical quartz glass panel 4 directly over moulding cylinder piston 7, optical quartz glass panel 4 is moved up and down and is realized by compression stepper motor and leading screw 3.After paving powder process terminates, optical quartz glass panel 4 moves down, make a certain amount of stopping afterwards of powder bed deformation, laser starts selective sintering process, sinter rear optical quartz glass panel 4 to move up certain distance, powder-laying roller 9 can be passed through smoothly, spread powder process next time; Under resistance heater 10 heating powder 5 temperature to fusing point, thermocouple 10 keeps powder 5 temperature constant.
A kind of selective laser sintering 3D that improves of the utility model prints in the device of part strength, that plane that optical quartz glass panel 4 contacts with molded goods 6 does release treatment, stick antiadhesion barrier, or carry out the anti-stick coating process such as coating, or spraying antitack agent.Also can after powder 5 sinter, CO
2generating laser 1 quits work certain hour interval, makes the surface of sintering have certain cooling, then removes optical quartz glass panel 4.
Claims (2)
1. improve the device that selective laser sintering 3D prints part strength, it is characterized in that: mainly comprise laser cell, paving powder unit, compressing unit and powder heating unit, laser cell mainly comprises CO
2generating laser and scanning galvanometer; Compressing unit mainly comprises moulding cylinder, moulding cylinder piston, powder cylinder, powder cylinder piston, moulding cylinder stepper motor and powder cylinder stepper motor, and moulding cylinder and powder cylinder walk abreast placed adjacent; The leading screw that paving powder unit mainly comprises powder-laying roller, optical quartz glass plate, control both optical quartz glass panel move up and down and compress stepper motor, powder-laying roller is placed on above moulding cylinder and powder cylinder, paving powder scrapes above moulding cylinder by powder-laying roller above powder cylinder, powder-laying roller spreads powder thickness at every turn in moulding cylinder, optical quartz glass panel is positioned at above moulding cylinder piston, and the sectional dimension of optical quartz glass panel is identical with the sectional dimension of moulding cylinder piston; Powder heating unit mainly comprises resistance heater and thermocouple; Laser cell is positioned at above optical quartz glass panel.
2. a kind of device improving selective laser sintering 3D printing part strength according to claim 1, is characterized in that: that plane that optical quartz glass panel contacts with moulded products sticks antiadhesion barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277091.3U CN204603301U (en) | 2015-04-30 | 2015-04-30 | A kind of device improving selective laser sintering 3D printing part strength |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277091.3U CN204603301U (en) | 2015-04-30 | 2015-04-30 | A kind of device improving selective laser sintering 3D printing part strength |
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| CN204603301U true CN204603301U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520277091.3U Withdrawn - After Issue CN204603301U (en) | 2015-04-30 | 2015-04-30 | A kind of device improving selective laser sintering 3D printing part strength |
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| CN (1) | CN204603301U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785780A (en) * | 2015-04-30 | 2015-07-22 | 北京化工大学 | Device and method for improving strength of selective laser sintering 3D printing part |
| CN107139460A (en) * | 2017-05-23 | 2017-09-08 | 安徽恒利增材制造科技有限公司 | A kind of extra quality cylinder 3d printers |
| CN108481733A (en) * | 2018-04-25 | 2018-09-04 | 深圳市纵维立方科技有限公司 | A kind of the 3D printing device and 3D printing forming method of in-situ sintering |
| CN109109315A (en) * | 2018-10-25 | 2019-01-01 | 中国科学技术大学 | A kind of method and device of the layer-by-layer powdering compacting of the supply powder of precinct laser sintering |
-
2015
- 2015-04-30 CN CN201520277091.3U patent/CN204603301U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785780A (en) * | 2015-04-30 | 2015-07-22 | 北京化工大学 | Device and method for improving strength of selective laser sintering 3D printing part |
| CN107139460A (en) * | 2017-05-23 | 2017-09-08 | 安徽恒利增材制造科技有限公司 | A kind of extra quality cylinder 3d printers |
| CN108481733A (en) * | 2018-04-25 | 2018-09-04 | 深圳市纵维立方科技有限公司 | A kind of the 3D printing device and 3D printing forming method of in-situ sintering |
| CN108481733B (en) * | 2018-04-25 | 2023-07-25 | 深圳市纵维立方科技有限公司 | In-situ sintering 3D printing device and 3D printing forming method |
| CN109109315A (en) * | 2018-10-25 | 2019-01-01 | 中国科学技术大学 | A kind of method and device of the layer-by-layer powdering compacting of the supply powder of precinct laser sintering |
| CN109109315B (en) * | 2018-10-25 | 2023-08-29 | 中国科学技术大学 | Method and device for layer-by-layer powder spreading and compacting of powder supply for selective laser sintering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20170714 |