CN204504221U - A kind of printing head device based on lf - Google Patents
A kind of printing head device based on lf Download PDFInfo
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- CN204504221U CN204504221U CN201520155882.9U CN201520155882U CN204504221U CN 204504221 U CN204504221 U CN 204504221U CN 201520155882 U CN201520155882 U CN 201520155882U CN 204504221 U CN204504221 U CN 204504221U
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- printing head
- bearing
- optical fiber
- device based
- head
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- 238000007639 printing Methods 0.000 title claims abstract description 77
- 239000013307 optical fiber Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 230000008018 melting Effects 0.000 abstract description 14
- 238000002844 melting Methods 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 10
- 239000000843 powder Substances 0.000 abstract description 9
- 239000003870 refractory metal Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Abstract
This application discloses a kind of printing head device based on lf, the front end of described printing head is polyhedral structure, the arranged outside of printing head has multiple infrared optical fiber laser instrument, the laser vertical that infrared optical fiber laser instrument emits is radiated at the front end of printing head and injects printing head inside, utilize high energy laser beam to heat printed material, the technology that refractory metal melting prints can be realized, avoid the waste of metal fine powder in prior art.
Description
Technical field
The application relates to laser printing technology field, is specifically related to a kind of printing head device based on lf.
Background technology
3D printing technique, as emerging strategic industries, changes traditional mode of production and life fast.Because melting point metal is higher, in print procedure, the multiple physical process such as the solid-liquid phase change of metal, diffusion into the surface and heat transfer makes printing metal parts rely on rapid laser-shaping technique to realize.The quick molding method that can be used for directly manufacturing metal function part at present mainly contains: comprise precinct laser sintering technology, direct metal laser sintering, precinct laser thawing technology, the clean forming technique of Laser Near and electron beam selective melting technology.These technology mostly using metal dust as raw material, by paving powder or the mode feed that dusts, make powder body material generation running down or partial melting in forming process, with the part adhesive be shaped below, pile up layer by layer, until whole part has all melted.The utilization rate of powder low (20% ~ 30%) in this process, the cost that the problems such as the harmful poisonous gas recovery that the costliness of powder price and powder smelting produce make 3D print hardware increases greatly.
FDM adopts ripe fused deposition technology, extrudes low-melting-point metal or nonmetallic liquid, pile up shaping by printing head.Its mechanical system mainly comprises shower nozzle, wire feeder, motion, heating work room, workbench 5 parts.Thread printed material is fused into liquid by the extrusion head of heater, the material of fusing is extruded by shower nozzle, be covered on the part built, and quick solidification, often complete a formable layer, workbench just declines a layer height, shower nozzle carries out the scanning spray silk of next layer cross section again, layer by layer deposition, to the last one deck so repeatedly, is so successively piled into a physical model end of by top.This technical matters is comparatively simple, and manufacturing cost is lower, consumptive material environmental protection, is applicable to batch production and pushes family, medium-sized and small enterprises to.But the limitation of the shower nozzle on FDM printing device at present is on the market: can only be applicable to the lower material of melting temperature, as adopted electrical heating molten plastic, simultaneously, FDM printing head does not carry out good temperature melting for printed material and controls, printed material is caused to cool too fast, connect not tight between layers, the 3D solid that compactness is high, mechanical property is good cannot be formed.
Summary of the invention
The object of the application is the shortcoming overcoming above-mentioned prior art, provides a kind of printing head device based on lf, can realize the printing of refractory metal.
The application is achieved through the following technical solutions:
a kind of printing head device based on lf, comprise printing head, the front end of described printing head is polyhedral structure, the arranged outside of printing head has multiple infrared optical fiber laser instrument, and the laser vertical that infrared optical fiber laser instrument emits is radiated at the front end of printing head and injects printing head inside.
The top of described printing head is provided with bearing and temperature measuring head bearing, and bearing and temperature measuring head bearing enclose formation one for installing the cavity treating melted material, and this cavity is communicated with printing head.
The below of printing head arranges substrate; Described bearing is provided with the feedback device of the spacing for monitoring printing head and substrate.
Described temperature measuring head bearing is provided with the infrared temperature measuring head for detecting printing head front end LASER SPECKLE temperature.
The internal diameter of described printing head is 0.2-2mm, and the laser spot diameter that infrared optical fiber laser instrument emits is 1-5mm.
After the application adopts said structure, there is following technique effect:
The application is in conjunction with the thread feeding structure of FDM, to treat that melting materials processing becomes wire rod, use higher laser energy density, raw metal is melted completely, not only can avoid the step effect produced because of paving powder layer thickness, also reject this shortcoming of powder poor flow properties of process of dusting, more can realize precinct laser fusion precision " to be only shaped ", make the metal forming part printed have metallurgical binding tissue, density is higher, mechanical property and dimensional accuracy advantages of higher.Meanwhile, because there is no dust pollution in print procedure, so lower to the requirement of equipment, more there is economy.
The Front-end Design of the application's printing head is polyhedral structure, the multiple infrared optical fiber laser instrument of printing head arranged outside, make high energy laser beam perpendicular through each side of polyhedral structure, reduce laser energy loss, and then melt dystectic metal at a high speed, realize the technology that refractory metal melting prints.This technology can avoid the waste of metal fine powder in prior art, and decreasing pollution reduces costs.
The setting of infrared temperature measuring head and feedback device in the application, the temperature of Real-Time Monitoring LASER SPECKLE and the distance between substrate and printing head, thus regulate the power output of infrared optical fiber laser instrument and the distance between printing head and substrate, ensure that this kind of extrusion type printing head can effectively work.And use the temperature of the real-time detection laser beam focused spot of infrared temperature measuring head, can ensure that in printing head, melt temperature is unsuitable too high, just can extrude and be advisable, ensure that conveying feed is smooth and easy, do not block not expand tube.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the application;
Fig. 2 is a kind of embodiment of printing head;
Fig. 3 is the another kind of embodiment of printing head;
Wherein: 1. printing head; 2. support; 3. cavity; 5. laser head bearing; 6. infrared optical fiber laser instrument; 7. infrared temperature measuring head; 8. temperature measuring head bearing; 9. feedback device; 10. bearing; 11. substrates.
Detailed description of the invention
For making the object of the application and technical scheme clearly, be clearly and completely described below in conjunction with the technical scheme of the embodiment of the present application to the application.Obviously, described embodiment is a part of embodiment of the application, instead of whole embodiments.Based on the embodiment of described the application, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of the application's protection.
As shown in Figure 1, the application both sides above printing head 1 are provided with the bearing 10 for installing feedback device 9 and the temperature measuring head bearing 8 for fixing infrared temperature measuring head 7, bearing 10 and temperature measuring head bearing 8 enclose formation one for installing the cavity 3 treating melted material, this cavity 3 is communicated with printing head 1, and substrate 11 is placed in the below of printing head 1.
Preferably, described cavity 3 is cylindrical structural, will treat melted material, such as metal, and be processed into wire rod and be placed therein, and carries to printing head 1 front end.
In the peripheral device structure of printing head 1 or perhaps on printing device, support 2 is set, support 2 is installed with multiple laser head bearing 5, installation infrared optical fiber laser 6 on laser head bearing 5, the laser vertical that infrared optical fiber laser instrument 6 emits is radiated on printing head 1, the front end of printing head 1 is polyhedral structure, multiple infrared optical fiber laser instruments 6 are arranged at the outside of printing head 1, the laser that infrared optical fiber laser instrument 6 emits is radiated at the front end of printing head 1 and injects printing head 1 inside, form heating region, with the material treating melting metal wire rod or high temperature resistant melting placed in this heating cavity 3, can realize treating the melting simultaneously of melting metal wire rod and printing ejection.Due to laser irradiate equally in printing head 1 spray end, so the metal material of melting flow to printing head 1 spray end time and uncolled, the phenomenon such as running, blocking can not be caused.
The size that the laser facula launched by regulating infrared optical fiber laser instrument 6 converges and area, can be divided into three sections by printing head 1 by heating-up temperature, i.e. the preheating section of heating, expansion softening section, melt zone.The running avoiding traditional aluminium block, electrical heating etc. to produce, clogging.
In the application, infrared temperature measuring head 7 measures the maximum temperature of the heating region that laser beam converges, the temperature regime in real-time this region of detection, make printing head 1 proper temperature, ensure by printed material to be the non-newtonian fluid state of not trickling, just can extrude, ensure that conveying feed is smooth and easy, do not block not expand tube.The adjustment of infrared optical fiber laser instrument 6 power output is carried out, to ensure the stability contorting of molten condition according to monitored data.
The feedback device 9 of the application, the distance between Real-Time Monitoring substrate 11 and printing head 1, ensures that this kind of printing head 1 can effectively work.Distance between crowded printing head 1 and substrate 11 is suitable for, extrudes smoothly, ensure successively to superpose printing.
As shown in Figure 2, be the top view of the printing head 1 front end polyhedral structure based on lf that the application designs, the inside diameter ranges wherein designing printing head 1 is 0.2-2mm, and the laser spot diameter that infrared optical fiber laser instrument 6 emits is at 1-5mm.For the printing head 1 of different inner diameters, the number of set infrared optical fiber laser instrument 6 is also different, and the laser beam finally realizing infrared optical fiber laser instrument 6 to produce changes into the energy of melting printed material efficiently.
As shown in Figure 3, in the application, the number of the above infrared optical fiber laser instrument 6 can be selected as required, can increase and decrease the internal diameter of printing head 1 as required, and the window for printing opacity that printing head 1 is offered is also optional.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the application.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
The implication of the "and/or" described in the application refers to respective individualism or both simultaneous situations include interior.
The indirect connection that can be the direct connection between parts also can be by other parts between parts of the implication of " connection " described in the application.
With the above-mentioned desirable embodiment according to the application for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this application technological thought, can carry out various change and amendment completely.The technical scope of this application is not limited to the content on description, must determine its technical scope according to right.
Claims (5)
1. the printing head device based on lf, comprise printing head, it is characterized in that: the front end of described printing head is polyhedral structure, the arranged outside of printing head has multiple infrared optical fiber laser instrument, and the laser vertical that infrared optical fiber laser instrument emits is radiated at the front end of printing head and injects printing head inside.
2. a kind of printing head device based on lf according to claim 1, it is characterized in that: the top of described printing head is provided with bearing and temperature measuring head bearing, bearing and temperature measuring head bearing enclose formation one for installing the cavity treating melted material, and this cavity is communicated with printing head.
3. a kind of printing head device based on lf according to claim 2, is characterized in that: the below of printing head arranges substrate; Described bearing is provided with the feedback device of the spacing for monitoring printing head and substrate.
4. a kind of printing head device based on lf according to claim 2, is characterized in that: described temperature measuring head bearing is provided with the infrared temperature measuring head for detecting printing head front end LASER SPECKLE temperature.
5. a kind of printing head device based on lf according to claim 4, is characterized in that: the internal diameter of described printing head is 0.2-2mm, and the laser spot diameter that infrared optical fiber laser instrument emits is 1-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155882.9U CN204504221U (en) | 2015-03-19 | 2015-03-19 | A kind of printing head device based on lf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520155882.9U CN204504221U (en) | 2015-03-19 | 2015-03-19 | A kind of printing head device based on lf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204504221U true CN204504221U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520155882.9U Expired - Fee Related CN204504221U (en) | 2015-03-19 | 2015-03-19 | A kind of printing head device based on lf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204504221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772462A (en) * | 2015-03-19 | 2015-07-15 | 南京邮电大学 | Printing spray nozzle device based on laser melting |
| CN107263857A (en) * | 2017-06-30 | 2017-10-20 | 芜湖启泽信息技术有限公司 | A kind of medical 3D printer of Far-infrared Heating |
-
2015
- 2015-03-19 CN CN201520155882.9U patent/CN204504221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104772462A (en) * | 2015-03-19 | 2015-07-15 | 南京邮电大学 | Printing spray nozzle device based on laser melting |
| CN107263857A (en) * | 2017-06-30 | 2017-10-20 | 芜湖启泽信息技术有限公司 | A kind of medical 3D printer of Far-infrared Heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: NANJING University OF POSTS AND TELECOMMUNICATIONS Contract record no.: 2016320000209 Denomination of utility model: Printing spray nozzle device based on laser melting Granted publication date: 20150729 License type: Common License Record date: 20161111 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Jiangsu Nanyou IOT Technology Park Ltd. Assignor: NANJING University OF POSTS AND TELECOMMUNICATIONS Contract record no.: 2016320000209 Date of cancellation: 20180116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150729 |