CN106493940A - The 3D printer shower nozzle of nozzle diameter real-time variable - Google Patents
The 3D printer shower nozzle of nozzle diameter real-time variable Download PDFInfo
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- CN106493940A CN106493940A CN201611151719.0A CN201611151719A CN106493940A CN 106493940 A CN106493940 A CN 106493940A CN 201611151719 A CN201611151719 A CN 201611151719A CN 106493940 A CN106493940 A CN 106493940A
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- nozzle
- track slot
- walking track
- heat block
- place kick
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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Abstract
The invention discloses a kind of 3D printer shower nozzle of nozzle diameter real-time variable, include charging trunnion, it is arranged at the heat block of charging trunnion outer end, nozzle docking position is set on the lower surface of heat block, the heat block discharging opening that the inner charging inner tube with charging trunnion is connected is provided with nozzle docking position, multiple nozzles are also included, walking track slot is opened up on the lower surface of described heat block, described multiple nozzle slidings are arranged in walking track slot, nozzle docking position is arranged on the diapire of walking track slot, bogie has been mutually fixedly set between multiple nozzles, motor and bogie are connected and are used for driving the sliding so that multiple nozzles dock position in nozzle switches in walking track slot of multiple nozzles, and each nozzle nozzle material-feeding mouth when sliding switches to nozzle docking position is docked and connected with heat block discharging opening.It is an advantage of the invention that can realize that in print procedure nozzle diameter switches in real time.
Description
Technical field
The present invention relates to the 3D printer shower nozzle of a kind of 3D printer, specifically nozzle diameter real-time variable.
Background technology
3D printing technique occurs in the eighties in 20th century, also referred to as " rapid shaping technique ".Its maximum advantage is nothing
Machining or mould is needed, in the graph data that just directly can go out from Computer Design, any object is generated, so as to greatly contract
The R＆D cycle of short sawn timber, improve productivity ratio and reduce production cost.Therefore art circles and industrial quarters are widely used in.3D
Printing technique, according to the difference of its forming method, can be divided into stereolithography（SLA）, laminated solid mass manufacture（LOM）, selectivity
Laser sintered（SLS）, Fused Deposition Modeling（Fused Deposition Modeling, FDM）Deng.Wherein FDM rapid shapings system
System is which not using laser system with the most essential difference of other systems, and therefore cost is minimum, is also presently the most extensive
A kind of 3D printing technique of application.FDM techniques are usually that the low melting point filamentary material of solid-state is heated to semi-molten state, such as
PLA or ABS etc..Then, extruded, according to per layer of predetermined track of object, successively manufactured, often manufactured under one layer of workbench
One thickness of drop or printing head rise a thickness, so finally construct repeatedly whole entity.
The shower nozzle of the existing 3D printer based on FDM techniques, its structure mainly include charging trunnion, are arranged at charging
The aluminium alloy heat block of trunnion outer end and the nozzle for being fixed on aluminium alloy heat block and connecting with charging trunnion conveying,
Wherein, the heating unit for heating is provided with aluminium alloy heat block.During printing, silk material delivers to aluminium alloy from by wire feeder
It is heated in heat block thawing, then flows out from nozzle.The diameter of nozzle determines the diameter of wire vent, and this just determines the layer of printing
The maximum gauge of piece can not possibly be more than nozzle diameter.It is well known that 3D printing technique is the thought by being layered realizing, lead to
Often, synusia thickness is thicker, and model surface precision is poorer, but the time-write interval is shorter.Synusia thickness is thinner, model print surface precision
Higher, longer to the time-write interval, meanwhile, 3D printer sprays cephalomotor speed and is limited by rate of material dissolution and nozzle diameter
System.At present, the nozzle diameter of 3D printer is between 0.1 to 0.5 mm, for avoiding the too little plug of nozzle diameter, great majority from printing
Nozzle of the machine using 0.4 mm diameters.If it is desired to printing finer model, it will usually select nozzle diameter less, but so
The risk of time-write interval and plug can be increased simultaneously.
In the 3D printing course of processing, generally some models need not completely using unified thickness, than as shown in Figure 1
Dumbbell shape, for taking into account process time and processing progress, small size nozzle can be used where profile variations are obvious
Print.And change unconspicuous, it is possible to use large scale nozzle print.Not only model quality can have been improved so but also can reduce beating
Print time and cost.But, the replacing of the nozzle of traditional 3D printer needs the nozzle that would be attached to alloy heat block bottom
Entirety is screwed down, and before a model has not been printed, cannot be changed another nozzle, and be changed nozzle and also need to
Re-calibrate the distance between nozzle and print platform.Therefore bother very much, efficiency is very low.It is therefore desirable to being changed to this
Enter.
By retrieval：
（1）China Patent Publication No. CN105109041A discloses a kind of 3D printers of interchangeable nozzle printing, the technical scheme
Change the nozzle structure of the 3D printer of traditional FDM techniques completely, and need the extra guide rail that arranges to be driven, this
Structure cannot be applied to the 3D printer that popularizes very much in the market.
（2）China Patent Publication No. CN105965898A discloses a kind of 3D printer shower nozzle of rotatable switching, the skill
The rotation of the printer head of art scheme is needed by external force, is such as switched over manually, and which is substantially changed with traditional craft
Printer nozzle is not too different, and of paramount importance, the technical scheme cannot realize the work(that real-time nozzle switches automatically in real time
Energy.
Content of the invention
The invention aims to overcoming the shortcoming and defect that prior art is present, and a kind of nozzle is provided and can printed
During switch in real time, so as to realize nozzle diameter real-time variable effect, such that it is able to mate print needs nozzle diameter reality
When variable 3D printer shower nozzle.
For achieving the above object, the technical scheme is that and include charging trunnion, be arranged at charging trunnion outer end
Heat block, nozzle docking position is set on the lower surface of heat block, be provided with nozzle docking position inner with feed entering for trunnion
The material heat block discharging opening that is connected of inner tube, also includes multiple nozzles, is provided with and feeds the nozzle of connection successively and enter on nozzle
Material mouth, nozzle bore and material spray discharging opening, and the material spray discharging opening diameter of multiple nozzles not etc. do not arrange, under described heat block
Walking track slot is opened up on end face, and described multiple nozzle slidings are arranged in walking track slot, and nozzle docking position is arranged at walking rail
On the diapire of groove, bogie between multiple nozzles, is mutually fixedly set, on described heat block, has been additionally provided with motor, institute
The motor that states is connected with bogie and is used for driving multiple nozzles sliding so that multiple nozzles in walking track slot
Switch in nozzle docking position, and each nozzle nozzle material-feeding mouth when sliding switches to nozzle docking position is discharged with heat block
Mouth is docked and connected.
It is described walking track slot for annular track slot further to arrange, the motor output shaft and circle of described motor
The central axis coaxial of annular track slot, described bogie include multiple being respectively used to each nozzle and motor output shaft phase
The kinematic link of fixed linkage.
Further arrange is that corresponding nozzle is docked the position of position and is provided with for locking on described walking track slot medial wall
The detent mechanism of nozzle, the detent mechanism include place kick, and the place kick in walking track slot medial wall rotates chamber,
And the spring eye that place kick rotates intracavity end is connected to, and adjustable spring is provided with spring eye, place kick is rotated and is located at positioning
Ball rotates intracavity and its inner resilient support with adjustable spring is connected, and turns relative to place kick on described walking track slot medial wall
It is detachably fixed at the outward opening in dynamic chamber and is covered with cover plate, on described cover plate, is provided with cover plate of the diameter less than positioning bulb diameter
Centre bore, the outer end of described place kick expose the outer end for being raised in cover central hole, each nozzle with the positioning
The positioning shrinkage pool with the outer end scarf positioning of place kick is provided with the corresponding side wall of ball.By this setting so that nozzle
Spacing fixation can be obtained when nozzle docking position is switched to, thus, ensureing the stability that nozzle is fixed.
Further arrange is to be provided with the outer end of described place kick for sensing nozzle whether position in place is felt
Inductive switch, and the output of location sensitive switch and nozzle whether corresponding switching signal in place.By this setting, the switch letter
Number can go the wire feeder motion that controls 3D printer in conjunction with executor, nozzle also no switching in place when, stop wire feed and move
Make.
Further arrange be walk track slot groove depth consistent, the highly equal setting in the longitudinal direction of each nozzle.By this
Arrange, after the switching of each shower nozzle is finished, need not re-start and calibrate without nozzle location, improve working (machining) efficiency.
It is that described nozzle is provided with 4 further to arrange, the diameter of its material spray discharging opening be respectively 0.1mm, 0.2mm,
0.3mm and 0.4mm.
It is an advantage of the invention that the real-time variable switching of nozzle diameter in print procedure can be realized, thus, some are to power
The not high product of performance requirement is learned, small size nozzle can be used when outline is printed, using large scale nozzle during filling, this
Sample can ensure that machining accuracy, can save process time again, and the maximum thickness that traditional 3D printer is printed is straight by nozzle
Footpath limits, it is impossible to the time-write interval is greatly improved.
The present invention is described further with reference to specification drawings and specific embodiments.
Description of the drawings
3D printing size distribution plot of Fig. 1 dumbbell shapes workpiece based on the nozzle of different bores；
Fig. 2 specific embodiment of the invention axonometric charts；
Fig. 3 specific embodiment of the invention upward views；
A-A sectional views of the Fig. 4 for Fig. 3.
Specific embodiment
The present invention is specifically described below by embodiment, is served only for being further described the present invention, no
It is understood that for limiting the scope of the present invention, the technician in the field can be according to the content of foregoing invention to the present invention
Make some nonessential modifications and adaptations.
The specific embodiment of the present invention as Figure 1-4, includes charging trunnion 1, is arranged at charging trunnion outer end
The heat block 2 in portion, the heat block are generally aluminium alloy heat block, be provided with heating resistance element, be that this area is routinely matched somebody with somebody in which
Part, arranges nozzle docking position 21, is provided with the inner and feeds entering for trunnion 1 on nozzle docking position 21 on the lower surface of heat block 2
The heat block discharging opening 22 that material inner tube 11 is connected, also includes multiple nozzles 3, is provided with charging connection successively on nozzle 3
Nozzle material-feeding mouth 31, nozzle bore 32 and material spray discharging opening 33, and 33 diameter of material spray discharging opening of multiple nozzles 3 not etc. do not arrange,
Walking track slot 23 is opened up on the lower surface of described heat block 2, and described 3 sliding of multiple nozzles is arranged in walking track slot 23,
Nozzle docking position 21 is arranged on the diapire of walking track slot 23, has been mutually fixedly set bogie 4 between multiple nozzles 3, described
Heat block 2 on be additionally provided with motor 5, described motor 5 is connected with bogie 4 and for driving multiple sprays
Mouth 3 sliding causes multiple nozzles 3 to switch in nozzle docking position 21 in walking track slot, and each nozzle 3 is cut in sliding
When shifting to nozzle docking position 21, nozzle material-feeding mouth 31 is docked and connected with heat block discharging opening 22.
Additionally, as specifically, the walking track slot 23 described in the present embodiment is annular track slot, described motor 5
Motor output shaft and annular track slot central axis coaxial, described bogie 4 includes multiple being respectively used to each
Nozzle mutually fixes the kinematic link 41 of linkage with motor output shaft, in addition, corresponding nozzle on described 23 medial wall of walking track slot
The position of docking position 21 is provided with for locking the detent mechanism of nozzle, and the detent mechanism includes place kick 61, and is located at
Place kick in walking track slot medial wall rotates chamber 62, and is connected to the spring eye 63 that place kick rotates intracavity end, spring eye
Adjustable spring 64 is provided with 63, and place kick 61 is rotated in place kick rotation chamber 62 and which is inner elastic with adjustable spring 64
Connection is supported, and is detachably fixed and is covered with the outward opening that chamber is rotated on described walking track slot medial wall relative to place kick
Plate 65, is provided with cover central hole 651 of the diameter less than positioning bulb diameter on described cover plate 65, described place kick 61 outer
The outer end for being raised in cover central hole 651 is exposed in end, arranges on each nozzle 3 side wall corresponding with the place kick 61
There is the positioning shrinkage pool 34 with the outer end scarf positioning of place kick.
Additionally, preferably, being provided with the outer end of the place kick 61 described in the present embodiment for sensing nozzle is
No location sensitive switch in place, and the output of location sensitive switch and nozzle whether corresponding switching signal in place.The position
Put inductive switch and be typically chosen in capacitance touch inductive switch.
Additionally, the groove depth of the present embodiment walking track slot 23 is consistent, and longitudinal highly equal setting of each nozzle 3, institute
The nozzle 3 that states is provided with 4, and the diameter of its material spray discharging opening is respectively 0.1mm, 0.2mm, 0.3mm and 0.4mm.
Claims (6)
1. a kind of 3D printer shower nozzle of nozzle diameter real-time variable, includes charging trunnion, is arranged at charging trunnion outer end
Heat block, nozzle docking position is set on the lower surface of heat block, be provided with nozzle docking position inner with feed entering for trunnion
The heat block discharging opening that material inner tube is connected, it is characterised in that：Multiple nozzles are also included, and charging successively is provided with nozzle and is connected
Logical nozzle material-feeding mouth, nozzle bore and material spray discharging opening, and the material spray discharging opening diameter of multiple nozzles not etc. do not arrange, described
Walking track slot is opened up on the lower surface of heat block, and described multiple nozzle slidings are arranged in walking track slot, and nozzle docking position sets
Be placed on the diapire of walking track slot, bogie has been mutually fixedly set between multiple nozzles, has been additionally provided with described heat block
Motor, described motor are connected with bogie and are used for driving multiple nozzles sliding to make in walking track slot
Multiple nozzles are switched in nozzle docking position, and each nozzle when sliding switches to nozzle docking position nozzle material-feeding mouth with
Heat block discharging opening is docked and connected.
2. the 3D printer shower nozzle of a kind of nozzle diameter real-time variable according to claim 1, it is characterised in that：Described
Walking track slot is annular track slot, the motor output shaft of described motor and the central axis coaxial of annular track slot, institute
The bogie that states includes multiple kinematic links for being respectively used to each nozzle and motor output shaft are mutually fixed linkage.
3. the 3D printer shower nozzle of a kind of nozzle diameter real-time variable according to claim 1 and 2, it is characterised in that：Institute
On the walking track slot medial wall that states, the position of corresponding nozzle docking position is provided with for locking the detent mechanism of nozzle, the localization machine
Structure includes place kick, and the place kick in walking track slot medial wall rotates chamber, and is connected to place kick rotation chamber
Inner spring eye, is provided with adjustable spring in spring eye, place kick rotate be located at place kick rotate intracavity and its inner with stretch
Contracting spring supports connection, rotates relative to place kick detachably solid at the outward opening in chamber on described walking track slot medial wall
Surely cover plate is covered with, cover central hole of the diameter less than positioning bulb diameter on described cover plate, is provided with, described place kick
The outer end for being raised in cover central hole is exposed in outer end, is provided with the side wall corresponding with the place kick of each nozzle
Positioning shrinkage pool with the outer end scarf positioning of place kick.
4. the 3D printer shower nozzle of a kind of nozzle diameter real-time variable according to claim 1 and 2, it is characterised in that：Institute
It is provided with the outer end of the place kick that states for sensing nozzle whether location sensitive in place is switched, and location sensitive switch
Output and nozzle whether corresponding switching signal in place.
5. the 3D printer shower nozzle of a kind of nozzle diameter real-time variable according to claim 1 and 2, it is characterised in that：OK
The groove depth for walking track slot is consistent, longitudinal highly equal setting of each nozzle.
6. the 3D printer shower nozzle of a kind of nozzle diameter real-time variable according to claim 1 and 2, it is characterised in that：Institute
The nozzle that states is provided with 4, and the diameter of its material spray discharging opening is respectively 0.1mm, 0.2mm, 0.3mm and 0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151719.0A CN106493940B (en) | 2016-12-14 | 2016-12-14 | The 3D printer spray head of nozzle diameter real-time variable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611151719.0A CN106493940B (en) | 2016-12-14 | 2016-12-14 | The 3D printer spray head of nozzle diameter real-time variable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106493940A true CN106493940A (en) | 2017-03-15 |
| CN106493940B CN106493940B (en) | 2019-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611151719.0A Active CN106493940B (en) | 2016-12-14 | 2016-12-14 | The 3D printer spray head of nozzle diameter real-time variable |
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Cited By (9)
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| CN107175820A (en) * | 2017-07-27 | 2017-09-19 | 张玲玲 | A kind of 3D printer shower nozzle of bore self-regulated |
| CN107283844A (en) * | 2017-07-21 | 2017-10-24 | 佛山市正略信息科技有限公司 | A kind of 3D printer wire feeder of adjusting tensioning power |
| CN108971136A (en) * | 2018-09-26 | 2018-12-11 | 湖北科技学院 | A kind of Airshower chamber |
| DE102017119364A1 (en) * | 2017-08-24 | 2019-02-28 | Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen | Method and device for layered application of a plastic melt |
| CN111531884A (en) * | 2020-05-11 | 2020-08-14 | 重庆电子工程职业学院 | 3D print head switching mechanism |
| US10967571B1 (en) | 2019-10-29 | 2021-04-06 | International Business Machines Corporation | Varying orifice cross-section for three-dimensional printing |
| CN115416296A (en) * | 2022-09-21 | 2022-12-02 | 重庆春凌信息科技有限公司 | Multifunctional large-scale inkjet printing 3D printer |
| WO2023062635A1 (en) * | 2021-10-14 | 2023-04-20 | Ariel Scientific Innovations Ltd. | Three-dimensional printer with changeable nozzles |
| US11673316B2 (en) * | 2018-02-01 | 2023-06-13 | Divergent Technologies, Inc. | Apparatus and methods for additive manufacturing with variable extruder profiles |
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| WO2016180842A1 (en) * | 2015-05-11 | 2016-11-17 | Dp Digital Solutions Gmbh | Device and method for applying flowable material to a substratum that can be rotated about an axis of rotation |
| CN104985812A (en) * | 2015-06-18 | 2015-10-21 | 中国矿业大学 | Multi-spray-head mechanism for 3D printer |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107283844A (en) * | 2017-07-21 | 2017-10-24 | 佛山市正略信息科技有限公司 | A kind of 3D printer wire feeder of adjusting tensioning power |
| CN107175820A (en) * | 2017-07-27 | 2017-09-19 | 张玲玲 | A kind of 3D printer shower nozzle of bore self-regulated |
| CN107175820B (en) * | 2017-07-27 | 2018-07-24 | 清华大学天津高端装备研究院洛阳先进制造产业研发基地 | A kind of 3D printer nozzle of bore self-regulated |
| DE102017119364A1 (en) * | 2017-08-24 | 2019-02-28 | Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen | Method and device for layered application of a plastic melt |
| US11673316B2 (en) * | 2018-02-01 | 2023-06-13 | Divergent Technologies, Inc. | Apparatus and methods for additive manufacturing with variable extruder profiles |
| CN108971136A (en) * | 2018-09-26 | 2018-12-11 | 湖北科技学院 | A kind of Airshower chamber |
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| US10967571B1 (en) | 2019-10-29 | 2021-04-06 | International Business Machines Corporation | Varying orifice cross-section for three-dimensional printing |
| CN111531884A (en) * | 2020-05-11 | 2020-08-14 | 重庆电子工程职业学院 | 3D print head switching mechanism |
| WO2023062635A1 (en) * | 2021-10-14 | 2023-04-20 | Ariel Scientific Innovations Ltd. | Three-dimensional printer with changeable nozzles |
| CN115416296A (en) * | 2022-09-21 | 2022-12-02 | 重庆春凌信息科技有限公司 | Multifunctional large-scale inkjet printing 3D printer |
| CN115416296B (en) * | 2022-09-21 | 2023-08-15 | 重庆春凌信息科技有限公司 | Multifunctional large-scale spray painting 3D printer |
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