CN108081598A - Stereolithography equipment and its heating unit - Google Patents

Stereolithography equipment and its heating unit Download PDF

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Publication number
CN108081598A
CN108081598A CN201611025335.4A CN201611025335A CN108081598A CN 108081598 A CN108081598 A CN 108081598A CN 201611025335 A CN201611025335 A CN 201611025335A CN 108081598 A CN108081598 A CN 108081598A
Authority
CN
China
Prior art keywords
heating
waveguide
stereolithography equipment
heating unit
doctor blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611025335.4A
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Chinese (zh)
Inventor
许小曙
李清
杨超
杨琢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Farsoon High Tech Co Ltd
Original Assignee
Hunan Farsoon High Tech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Farsoon High Tech Co Ltd filed Critical Hunan Farsoon High Tech Co Ltd
Priority to CN201611025335.4A priority Critical patent/CN108081598A/en
Publication of CN108081598A publication Critical patent/CN108081598A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor

Abstract

A kind of Stereolithography equipment and its heating unit, wherein heating unit includes the heating system being mounted on doctor blade device, heating system includes the heating module for quantity of heat given up, the heating module is located at the both sides of doctor blade device or close to the one side of resin material to be struck off, and is heated with the movement of scraper chasing device to working region.The present invention not only can reduce high viscosity resins viscosity by heating, that is, considerably increase the scope of application of the present invention;And for the static heater element of the prior art, on the premise of the working region of same size is heated, the heating system of the present invention can reduce the occupied device space, and since the heating system structural volume of the present invention is small, used heater element accordingly can also be reduced, so as to substantially reduce the error present in heater, and then it ensure that thermal-stable.

Description

Stereolithography equipment and its heating unit
Technical field
The invention belongs to increases material manufacturing technology fields, and in particular to a kind of Stereolithography equipment and its heating unit.
Background technology
Photocureable rapid shaping, i.e., usually said SLA technology are using photosensitive resin as raw material, pass through computer control Laser processed carries out point by point scanning by each layering cross section information of part on the photosensitive resin surface of liquid, is scanned the resin in region Thin layer generates photopolymerization reaction and cures, and forms a thin layer of part.After the completion of one layer cures, workbench moves down a thickness Distance, then the new liquid resin of last layer is applied again in the resin surface being originally cured, until obtaining three-dimensional entity model. Since SLA technology makes material internal that polymer chemistry reaction occur, so its compact dimensions precision is high, arbitrarily complicated shape can shape Shape, shaping result is more preferable than SLS, is mainly used in complicated, high-precision delicate workpieces rapid shaping.
The Stereolithography technology of the prior art generally manufactures three-dimensional body by raw material of low viscosity resin, and for height The resin material of viscosity can only be helpless, so as to greatly limit the use scope of photocuring technology;In addition, the prior art Stereolithography technology can need not be heated before resin material curing, naturally it is also possible to it is heated, but generally using quiet Mode of heating only, in order to heat entire working region, general heater element is also required to be arranged as one that entire work can be heated Make the large area in region, so not only occupy equipment inner space significantly, but also since heater element is more, error is corresponding Also can increase, so that there are inhomogeneities for the temperature difference of working region.
The content of the invention
For above-mentioned technical problem existing in the prior art, taking up space the present invention provides one kind, small, heating effect is good Stereolithography equipment and its heating unit.
In order to solve the above technical problems, the present invention provides a kind of heating unit of Stereolithography equipment, including installation Heating system on doctor blade device, heating system include the heating module for quantity of heat given up, and the heating module, which is located at, to be scraped The both sides of knife system or the one side of close resin material to be struck off, are added with the movement of scraper chasing device to working region Heat.
As present invention further optimization scheme, when heating module is located at doctor blade device both sides, positioned at adding for both sides Thermal modules are in symmetrical structure.
As present invention further optimization scheme, the heating system uses microwave heating.
As present invention further optimization scheme, the heating system includes support plate, magnetron and waveguide, support Plate is mounted on doctor blade device, and magnetron is installed on the supporting plate, and the output terminal of magnetron is connected with the import of waveguide, so that It is projected by the microwave that magnetron goes out by the reflection of waveguide by the outlet of waveguide, and then realizes adding for working region Heat.
As present invention further optimization scheme, the waveguide is symmetrical hollow structure, and import is arranged on ripple The centre of conduit.
As present invention further optimization scheme, the heating system further includes spiral homogenizer, and the spiral homogenizes Device is arranged on inside waveguide and below import, the microwave radiation for magnetron to be gone out homogenize after to pass through waveguide Pipe both sides emit.
As present invention further optimization scheme, described device further includes the heating for being arranged on cylinder side wall and bottom Device and the insulating layer for being arranged on heater periphery.
As present invention further optimization scheme, described device further includes to detect the temperature inspection of working region temperature Survey device and control system, data control and regulation heating system that the control system detect according to temperature detector and heater with Realize the uniform temperature field of working region.
The present invention also provides a kind of Stereolithography equipment, include the heating of Stereolithography described in any one of the above embodiments Device.
The Stereolithography equipment and its heating unit of the present invention, has the advantages that:
1)Pass through the heating system for including being mounted on doctor blade device so that heating system of the invention can scraper chasing device It moves and carries out movement heating, so can reduce high viscosity resins viscosity by heating, consequently facilitating doctor blade, therefore this Invention may be not only suitable for low viscosity resin, can be applicable to high viscosity resins, therefore considerably increase being applicable in for the present invention Scope;
2)The present invention heating system scraper chasing device movement and carry out movement heating, so compared with the quiet of the prior art Only for heater element, on the premise of the working region of same size is heated, heating system of the invention can reduce occupied The device space, and due to the present invention heating system structural volume it is small, used heater element accordingly can also be reduced, from And the error present in heater is substantially reduced, and then ensure that thermal-stable;
3)The heating system of the present invention so that resin solidification is complete, that is, ensure that shaping work by being heated to resin material surface The precision of part.
Description of the drawings
Fig. 1 is the structure diagram for the embodiment that Stereolithography equipment of the present invention provides;
Fig. 2 is the sectional view for the embodiment that Stereolithography equipment of the present invention provides;
Fig. 3 is the mounting structure schematic diagram of heating system of the present invention;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is the A-A sectional views of Fig. 4.
Component mark is as follows in figure:
1st, cylinder body, 2, doctor blade device, 21, scraper, 3, heating system, 31, support plate, 32, magnetron, 33, waveguide, 34, spiral shell Revolve homogenizer, 4, heater, 5, insulating layer, 6, infrared detection probe, 7, control system.
Specific embodiment
In order to which those skilled in the art is allowed to more fully understand and realizes technical scheme, below with reference to explanation Book the drawings and specific embodiments are described in further details.
As depicted in figs. 1 and 2, the heating unit of Stereolithography equipment includes the heating system being mounted on doctor blade device 2 System 3, heating system 3 include the heating module for quantity of heat given up, and the heating module is located at the both sides of doctor blade device 2 or leans on The one side of nearly resin material to be struck off, is heated with the movement of scraper chasing device 2 to working region.
In specific implementation, the heating system 3 can by it is any be used for working region provide heat source and what is heated be System, it is preferable that the heating system 3 uses microwave heating, and firing rate is fast because microwave not only has, low, Er Qiejing is lost Experiment to be crossed to find, the wave-length coverage that common common heating source gives off is very wide, and photosensitive resin is very sensitive to radiated wave, A kind of usual photosensitive resin material can receive the light of wavelength in a certain range, be broken so as to cause photosensitive resin molecular link, Photocuring reaction is generated, so 3 use of existing heating system is there are risk, and this risk is difficult to discover and analyze so that Existing mode of heating can not be applicable in all resin materials, and microwave heating can be selected according to resin material characteristic to the resinous wood The wavelength energy without influence is expected, so as to evade the influence to photosensitive resin material, i.e., to the resin material in working region Without influence, so as to not only ensure that equipment functional reliability, but also work efficiency is further improved.
In specific implementation, above-mentioned heating module can be located at the both sides of doctor blade device 2 or close to resin material to be struck off One side, for example, when need doctor blade device 2 move back and forth can carry out heat effect or provide preferably heating effect when, Heating module can be located at 2 both sides of doctor blade device;And when only needing when 2 unidirectional motion of doctor blade device is heated, Yi Jijin When one step saving equipment takes up space, heating module can also be made to be only located at the one of the close resin material to be struck off of doctor blade device 2 Side, therefore, specifically how to select can be by designer according to design requirement unrestricted choice.It is moved back and forth below with doctor blade device 2 The mode that can be heated illustrates the principle of heating of the present embodiment:When doctor blade device 2 moves from left to right and strikes off tree During fat, positioned at 2 right side of doctor blade device(I.e. close to resin material one side to be struck off)Heating module can treat in advance and strike off tree Fat material is heated, and to reduce resin viscosity, is so not only convenient for scraper 21 and is paved resin, and can further make resinous wood Expect completion of cure, that is, ensure that the precision of shaping workpiece, similarly, when doctor blade device 2 moves from right to left and strikes off resin, position In 2 left side of doctor blade device(I.e. close to resin material one side to be struck off)Heating module can treat in advance strike off resin material into Row heating, to realize above-mentioned same effect.
Preferably, when heating module is located at 2 both sides of doctor blade device, the heating module positioned at both sides is preferably in symmetrical junction Structure so may be such that scraper 21 when moving back and forth, and the heating effect of heating system 3 is consistent, consequently facilitating computer heating control is adjusted, Simplify heating software control procedure.
As a preferred embodiment of the present invention, please refer to Fig. 3-Fig. 5, the heating system 3 include support plate 31, Magnetron 32 and waveguide 33, support plate 31 are mounted on doctor blade device 2, and magnetron 32 is mounted in support plate 31, magnetron 32 output terminal is connected with the import of waveguide 33, so that by the microwave that magnetron 32 is launched by the more of 33 wall of waveguide It is projected after secondary reflection by the outlet of waveguide 33, microwave action makes molecule in object that high frequency vibrating synchronously occur in molecule in object It is dynamic, self-heating is generated, so as to fulfill the heating of working region, the heating system 3 is simple in structure, takes up space small, and heating effect is more Well, evenly.
In specific implementation, the waveguide 33 is symmetrical hollow structure, and import is arranged on the centre of waveguide 33, right Do not do any restrictions in the concrete shape present invention of waveguide 33, can according to the area and status requirement of required heating region, And the total reflection routine calculation of microwave makes rational 33 wall shape of waveguide design, for example, in Fig. 3-Fig. 5, waveguide 33 is bowed Depending on the shape approximation butterfly's wing shape seen.
Preferably, as shown in figure 5, the heating system 3 further includes spiral homogenizer 34, the spiral homogenizer 34 is set In the inside of waveguide 33 and below import, the microwave radiation for magnetron 32 to be launched homogenize after to pass through waveguide 33 both sides emit, so as to ensure that 33 both sides of waveguide are evenly heated.
Preferably, as shown in Fig. 2, described device further includes the heater 4, Yi Jishe for being arranged on 1 side wall of cylinder body and bottom The insulating layer 5 in 4 periphery of heater is put, the firing rate of resin material can be so further improved, so that resin solidification is complete Entirely, that is, it ensure that the precision of shaping workpiece, and by improving firing rate, heating time correspondingly also shortened, so as to carry The high work efficiency of equipment.In specific implementation, described device further includes to detect the temperature detector of working region temperature With control system 7, the data that the control system 7 is detected according to temperature detector control to adjust heating system 3 and heater 4 with It realizes the uniform temperature field of working region, such as can stringent control of the viscograph into trip temperature be risen according to the temperature of resin material, So as to fulfill reliable, the quick manufacture of workpiece.In specific implementation, infrared detection probe 6 can be used in the temperature detector.
The present invention also provides a kind of Stereolithography equipment, and as depicted in figs. 1 and 2, which includes carrying tree The heating unit of the Stereolithography of the cylinder body 1 of fat material, the doctor blade device 2 with scraper 21 and any of the above-described embodiment, It should be noted that, core protection of the present invention is that a kind of photocuring of the heating system 3 with any of the above-described embodiment is set herein Standby, to those skilled in the art, other components of uv equipment, such as laser system etc. belong to the prior art, because This, is in the present invention not set forth in detail this content.
Above example is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned reality Example is applied, all technical solutions belonged under thinking of the present invention are within the scope of protection of the invention.It should be pointed out that this is not being departed from Several modifications and modification under the premise of inventive principle, should be regarded as protection scope of the present invention.

Claims (9)

1. a kind of heating unit of Stereolithography equipment, which is characterized in that including the heating system being mounted on doctor blade device, Heating system includes the heating module for quantity of heat given up, and the heating module is located at the both sides of doctor blade device or close to be doctored The one side of flat resin material is heated with the movement of scraper chasing device to working region.
2. the heating unit of Stereolithography equipment according to claim 1, which is characterized in that scraped when heating module is located at During knife system both sides, the heating module positioned at both sides is in symmetrical structure.
3. the heating unit of Stereolithography equipment according to claim 1 or 2, which is characterized in that the heating system Using microwave heating.
4. the heating unit of Stereolithography equipment according to claim 3, which is characterized in that the heating system includes Support plate, magnetron and waveguide, support plate be mounted on doctor blade device on, magnetron install on the supporting plate, magnetron it is defeated Outlet is connected with the import of waveguide, so that the microwave gone out by magnetron passes through reflection the going out by waveguide of waveguide Mouth projects, and then realizes the heating of working region.
5. the heating unit of Stereolithography equipment according to claim 4, which is characterized in that the waveguide is symmetrical Hollow structure, and import is arranged on the centre of waveguide.
6. the heating unit of Stereolithography equipment according to claim 5, which is characterized in that the heating system is also wrapped Spiral homogenizer is included, the spiral homogenizer is arranged on inside waveguide and below import, for magnetron to be gone out Microwave radiation homogenize after to be emitted by waveguide both sides.
7. the heating unit of Stereolithography equipment according to any one of claims 1 to 6, which is characterized in that the dress Put the insulating layer for further including the heater for being arranged on cylinder side wall and bottom and being arranged on heater periphery.
8. the heating unit of Stereolithography equipment according to claim 7, which is characterized in that described device further includes use In the temperature detector and control system of detection working region temperature, the data that the control system is detected according to temperature detector Heating system and heater are controlled to adjust to realize the uniform temperature field of working region.
A kind of 9. Stereolithography equipment, which is characterized in that adding including claim 1-8 any one of them Stereolithographies Thermal.
CN201611025335.4A 2016-11-22 2016-11-22 Stereolithography equipment and its heating unit Pending CN108081598A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611025335.4A CN108081598A (en) 2016-11-22 2016-11-22 Stereolithography equipment and its heating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611025335.4A CN108081598A (en) 2016-11-22 2016-11-22 Stereolithography equipment and its heating unit

Publications (1)

Publication Number Publication Date
CN108081598A true CN108081598A (en) 2018-05-29

Family

ID=62168337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611025335.4A Pending CN108081598A (en) 2016-11-22 2016-11-22 Stereolithography equipment and its heating unit

Country Status (1)

Country Link
CN (1) CN108081598A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104802415A (en) * 2015-05-11 2015-07-29 北京化工大学 Three-dimensional printing molding device for rubber powder by microwave sintering
CN205097551U (en) * 2015-10-21 2016-03-23 优克材料科技股份有限公司 Photocuring resin storage tank system and three -dimensional printing device
CN105593004A (en) * 2013-11-22 2016-05-18 维也纳科技大学 Device for processing photopolymerizable material for layer-by-layer construction of molding
CN106003724A (en) * 2016-06-28 2016-10-12 中北大学 Selective laser sintering (SLS) powder-laying roller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105593004A (en) * 2013-11-22 2016-05-18 维也纳科技大学 Device for processing photopolymerizable material for layer-by-layer construction of molding
CN104802415A (en) * 2015-05-11 2015-07-29 北京化工大学 Three-dimensional printing molding device for rubber powder by microwave sintering
CN205097551U (en) * 2015-10-21 2016-03-23 优克材料科技股份有限公司 Photocuring resin storage tank system and three -dimensional printing device
CN106003724A (en) * 2016-06-28 2016-10-12 中北大学 Selective laser sintering (SLS) powder-laying roller

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Application publication date: 20180529

RJ01 Rejection of invention patent application after publication