CN106217868A - A kind of vapour-pressure type increases material and manufactures shower nozzle - Google Patents
A kind of vapour-pressure type increases material and manufactures shower nozzle Download PDFInfo
- Publication number
- CN106217868A CN106217868A CN201610575171.6A CN201610575171A CN106217868A CN 106217868 A CN106217868 A CN 106217868A CN 201610575171 A CN201610575171 A CN 201610575171A CN 106217868 A CN106217868 A CN 106217868A
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- Prior art keywords
- barrel
- nozzle
- thermal insulation
- insulation layer
- vapour
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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
Abstract
One vapour-pressure type of the present invention increases material and manufactures shower nozzle, including nozzle, and is connected to the multistage material storage tube of nozzle input in turn；Nozzle exterior is disposed with nozzle heating unit and nozzle thermal insulation layer, arranges nozzle pad between nozzle and the barrel being connected；Being arranged with independent barrel temperature conditioning unit outside every grade of barrel respectively, the heating chamber in barrel temperature conditioning units at different levels is the most axially serially connected, and is respectively arranged with barrel thermal insulation layer outside barrel control temperature unit；Every grade of barrel is internally provided with material heat-conducting unit, and material heat-conducting unit includes multiple heat-conducting plate being uniformly arranged within barrel；Barrel pad it is provided with between adjacent barrel；Afterbody hopper end away from nozzle is disposed with barrel pad, barrel upper cover and barrel upper cover thermal insulation layer；Cover on barrel and be respectively provided with feed and extrusion force stabilising arrangement interface and extrusion force control interface；Barrel upper cover thermal insulation layer and the barrel thermal insulation layer of barrel at different levels, first order jet nozzle thermal insulation layer is tightly connected and is integrated.
Description
Technical field
The invention belongs to increase material manufacture (3D printing) material processing field, relate to fusion sediment forming technique, specially one
Plant vapour-pressure type and increase material manufacture shower nozzle.
Background technology
Fusion sediment forming technique (FDM) is a kind of more ripe technology in quick shaping field, and it shapes former substantially
Reason is that complicated 3 D stereo processing is changed into the processing of simple two dimensional surface, i.e. by 3 d modeling software or 3-D scanning
The three-dimensional part model that the instruments such as instrument obtain is input to pre-processing software, obtains controlling the program of this part forming, in numerical control system
Under the control of system, extrude on-demand for the material of molten state through nozzle, by point and line, to face, final adult reverse obtain required
The part shaped.
Vapour-pressure type fusion sediment former, owing to having, simple in equipment, consumptive material shape be unrestricted and shower nozzle
The advantage of the aspects such as lighter weight, the most of great interest in scientific research with practical application, yet with it at shower nozzle
The aspect existing defects such as material reserves, mode of heating, stable gas pressure, cause its application surface to receive certain restriction.
Prior art is primarily present following defect: 1. too small to cause single to be available for molding doses inclined for shower nozzle cavity space
Few problem；2., due to the restriction of the material capacity of heat transmission, the heating of single dependence chamber outer wall makes material melts inefficient；3.
There is provided the compressed gas of extrusion force entering after shower nozzle cavity due to excessive to the impact of fused materials, be easily accessible material bed in
Portion or puncture material bed, causes in formation of parts entrained gas or cause to shape unsuccessfully；4. material thickness in shower nozzle barrel
In the case of relatively big, owing to moulding material self the thermal conductivity molten condition caused on the low side is uneven, cavity inward flange material is easy
In aging.
Summary of the invention
For problems of the prior art, the present invention provides a kind of vapour-pressure type to increase material and manufactures shower nozzle, and storing amount is big, add
The thermal efficiency is high, extrusion force supply is stable, it is possible to expand the application surface of vapour-pressure type fusion sediment forming technique.
The present invention is to be achieved through the following technical solutions:
A kind of vapour-pressure type increases material and manufactures shower nozzle, including nozzle, and is connected to the multistage material storage tube of nozzle input in turn；
Nozzle exterior is disposed with nozzle heating unit and nozzle thermal insulation layer, arranges nozzle pad between nozzle and the barrel being connected；
Being arranged with independent barrel temperature conditioning unit outside every grade of barrel respectively, the heating chamber in barrel temperature conditioning units at different levels is the most axially gone here and there
It is connected together, outside barrel control temperature unit, is respectively arranged with barrel thermal insulation layer；Every grade of barrel is internally provided with material heat-conducting unit,
Material heat-conducting unit includes multiple heat-conducting plate being uniformly arranged within barrel, and heat-conducting plate is provided with some through holes；Adjacent material
Barrel pad it is provided with between Tong；Afterbody hopper end away from nozzle is disposed with barrel pad, barrel upper cover
With barrel upper cover thermal insulation layer；Cover on barrel and be respectively provided with feed and extrusion force stabilising arrangement interface and extrusion force control interface；
Barrel upper cover thermal insulation layer and the barrel thermal insulation layer of barrel at different levels, first order jet nozzle thermal insulation layer is tightly connected and is integrated.
Preferably, extrusion force controls the outlet side of interface and is provided with inducing QI buffer unit, and inducing QI buffer unit is that tubular sets
Put, sealed bottom, sidewall offers some horizontal through hole.
Preferably, metal heat-conducting block it is provided with nozzle outside the discharge end of the barrel being connected.
Further, nozzle exterior is provided with nozzle temperature measuring unit, nozzle temperature measuring unit, nozzle heating unit and metal heat-conducting
Block is the most axially aligned to be fixedly installed.
Preferably, the most with bolts between nozzle, barrel at different levels and barrel upper cover.
Preferably, nozzle input is connected with two-stage barrel in turn.
Preferably, the multiple heat-conducting plates within every grade of barrel are set in parallel, it is also possible to place for intersecting in homogeneous angular.
Preferably, the multiple heat-conducting plates within every grade of barrel are in arranged in a crossed manner in homogeneous angular.
Compared with prior art, the present invention has a following useful technique effect:
The present invention introduces Multi-stage heating mechanism by nozzle heating unit and barrel temperature conditioning unit, to using nozzle and at different levels
Barrel heats respectively, preheats, and uses independent temperature conditioning unit, be then chained together by multiple heating cavities between every grade, increases
Add the gross space of cavity, solve the problem that shower nozzle cavity space is too small；Material in rear stage heating cavity is in previous stage
Heat on the basis of heating, shorten heating required time, solve material after increasing material and heat slow problem, increase
The inventory shaped it is available in vapour-pressure type fusion sediment former unit interval.
Further, by the heater of the correspondence other barrels at different levels in addition to one-level barrel, temperature is controlled at thing
Below material aging temperature, solve material hot soak condition and the degradation and decomposition phenomenon that occurs, it is ensured that making of material
Use performance.
Further, the present invention adds inducing QI buffer unit by inducing QI buffer unit at the end of inlet channel, will enter
The gas entering material cavity is changed into the direction being parallel to upper surface by the direction being perpendicular to fused materials upper surface, uses all simultaneously
The aperture of cloth increases the resistance of gas entrance and realizes reducing impact strength, changes gas before voltage supply gas enters material cavity
Velocity attitude, reduces the impact dynamics of gas simultaneously, solves the gas providing extrusion force and punctures material after entering shower nozzle cavity
The problem of layer.
Further, the present invention uses the method arranging heat-conducting plate at barrel inner homogeneous, preferably can utilize heat conduction
The copper coin that rate is big realizes the uniform heating of barrel inner melt.During specific design heat-conducting plate, uniform on heat-conducting plate
Aperture, makes to realize material circulation between the cavity separated by heat-conducting plate at any time, solves material melts state uneven
Even problem, also improves material firing rate and the degree of material thermally equivalent simultaneously, solves cavity edge material easy
In aging problem, the continuous feeding in forming process is made to become possibility.
Further, mode with bolts between jet hole and one-level barrel, change and become convenient with being connected, with
Time avoid the threaded unstability brought.
Accompanying drawing explanation
Fig. 1 is the overall assembling schematic diagram of shower nozzle described in present example.
Fig. 2 is three kinds of situation schematic diagrams that heat-conducting plate described in present example is arranged.
Fig. 3 is to utilize Forming Workpiece schematic diagram of the present invention described in present example.
In figure: A. nozzle segment；B. one-level barrel portion；C. two grades of barrel portion；D. barrel upper cover part；1. nozzle；
2. nozzle temperature measuring unit；3. nozzle heating unit；4. metal heat-conducting block；5. one-level barrel；6. one-level material heat-conducting unit；7. two
Level barrel thermal insulation layer；8. two grades of material heat-conducting units；9. two grades of barrel pads；10. barrel upper cover；11. barrel upper cover thermal insulation layers；
12. feed and extrusion force stabilising arrangement interface；13. extrusion forces control interface；14. inducing QI buffer units；15. first bolt fastenings
Part；16. 2 grades of barrel temperature conditioning units；17. 2 grades of barrels；18. one-level barrel pads；19. second bolt fasteners；20. one-levels
Barrel temperature conditioning unit；21. one-level barrel thermal insulation layers；22. nozzle thermal insulation layers；23. the 3rd bolt fasteners；24. nozzle pads.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, described in be explanation of the invention and
It not to limit.
One vapour-pressure type of the present invention increases material and manufactures shower nozzle, as it is shown in figure 1, by using Multi-stage heating structure, between every grade
Be provided with heat insulating mattress, with reduce at different levels between the interfering of temperature field, thus reach the purpose of accurate temperature controlling.Due at different levels
Temperature field uses the independent mode controlled, and uses the bolt connecting mode being prone to handling between every one-level, thus
During being embodied as, it is also possible to increase or reduce the progression of heating according to practical situation.
This preferred embodiment illustrates as a example by two-stage barrel.In terms of heating system: nozzle temperature measuring unit 2 and nozzle add
Hot cell 3, Main Function is to make to keep suitable forming temperature through the material of jet hole deposition, thus ensures the heat foot carried
To drive current deposition layer and preceding layer to realize good welding；One-level barrel temperature conditioning unit 20, Main Function is to make to be positioned at one
Material in level barrel reaches melt temperature, it is ensured that stable the melt extruding of fused materials；Two grades of barrel temperature conditioning units 16, mainly
Acting as preheating the material being in this section and control temperature is below material aging temperature, one-level barrel is at two grades
Heat on the basis of barrel preheating, enable material to be rapidly reached melt temperature after entering one-level barrel, and then improve
Unit interval is available for depositing the total amount of material；Two grades of barrel pads 9, one-level barrel pad 18 and nozzle pad 24, Main Function
It is between each heating unit, to avoid direct heat exchange as far as possible, thus ensures the effect of independent temperature.
Extrusion force stabilisation systems aspect: feed and extrusion force stabilising arrangement interface 12, Main Function is by this interface
Realize the continuous supply of material, maintain stablizing of extrusion force in shower nozzle simultaneously；Extrusion force controls interface 13 and inducing QI buffer unit
14, Main Function is to change into the gas of entrance material cavity by the direction being perpendicular to fused materials upper surface to be parallel to upper surface
Direction so that gas extrusion force is uniformly distributed at material upper surface, simultaneously increase gas enter resistance realize reduce punching
Hit intensity, prevents gas from puncturing material bed.
Melt temperature homogenization aspect: metal heat-conducting block 4, one-level material heat-conducting unit 6 and two grades of material heat-conducting units 8 are equal
Being that the metal utilizing thermal conductivity big realizes uniformly transfer heat and heat supply, its modes of emplacement is as shown in Figure 2, it is possible to according to the number of heat-conducting plate
Amount carries out with demand be arrangeding in parallel, cross setting or three pieces become arranged in a crossed manner and then realize melt and quickly and uniformly melt,
Can simultaneously be effectively prevent cavity skirt materials the most aging and problem that chamber central material molten is bad.
Connection between each parts: first and second and three bolt fasteners 15,19,23, the dress being primarily to facilitate between each unit
Unloading, the existence of the 3rd bolt fastener 23 simultaneously avoids employing engagement thread when nozzle 1 is connected with one-level barrel 5, and then keeps away
The problem exempting to cause deposition instability due to screw thread.
During use, in afterbody barrel, first add the required material shaped, then set according to material physical property each
The heating-up temperature of heating element heater, is incubated 15 minutes after the temperature of each heating element heater reaches setting value, finally loads squeezing of setting
Exert oneself molten state material on-demand extrusion at nozzle 1.This shower nozzle is fixed on Digit Control Machine Tool, sets relevant operation program
Deposition formation can be carried out.
As it is shown on figure 3, use shower nozzle of the present invention, nozzle diameter 1.5mm, extrusion force 0.2MPa, nozzle temperature 175
℃；One-level barrel temperature 150 DEG C；Two grades of barrel temperatures 60 DEG C, lift height 0.4mm, sweep speed 900mm/min, time-consuming 2h
Obtain PLA material drip molding.
Claims (8)
1. a vapour-pressure type increases material manufacture shower nozzle, it is characterised in that includes nozzle (1), and is connected to nozzle (1) input in turn
The multistage material storage tube of end；
Nozzle (1) is outside is disposed with nozzle heating unit (3) and nozzle thermal insulation layer (22), nozzle (1) and the barrel being connected
Between nozzle pad (24) is set；
Independent barrel temperature conditioning unit it is arranged with respectively, the heating chamber axle successively in barrel temperature conditioning units at different levels outside every grade of barrel
To being serially connected, outside barrel control temperature unit, it is respectively arranged with barrel thermal insulation layer；
Every grade of barrel is internally provided with material heat-conducting unit, material heat-conducting unit include multiple be uniformly arranged within barrel lead
Hot plate, heat-conducting plate is provided with equally distributed through hole；
Barrel pad it is provided with between adjacent barrel；Afterbody hopper end away from nozzle (1) is disposed with barrel
Pad, barrel upper cover (10) and barrel upper cover thermal insulation layer (11)；It is respectively provided with feed on barrel upper cover (10) and extrusion force is stable
Device interface (12) and extrusion force control interface (13)；
Barrel upper cover thermal insulation layer (11) and the barrel thermal insulation layer of barrel at different levels, it is one that first order jet nozzle thermal insulation layer (22) is tightly connected
Body.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that extrusion force controls interface (13)
Outlet side be provided with inducing QI buffer unit (14), inducing QI buffer unit (14) is arranged in tubular, and sealed bottom is offered on sidewall
There are some horizontal through hole.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that the material being connected with nozzle (1)
It is provided with metal heat-conducting block (4) outside the discharge end of cylinder.
A kind of vapour-pressure type the most according to claim 3 increases material and manufactures shower nozzle, it is characterised in that nozzle (1) is outside to be provided with
Nozzle temperature measuring unit (2), nozzle temperature measuring unit (2), nozzle heating unit (3) and metal heat-conducting block (4) are the most axially aligned
It is fixedly installed.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that nozzle (1), barrel at different levels and
Between barrel upper cover (10) the most with bolts.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that nozzle (1) input is successively
Connect and have two-stage barrel.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that multiple within every grade of barrel
Heat-conducting plate is set in parallel, it is also possible to place for intersecting in homogeneous angular.
A kind of vapour-pressure type the most according to claim 1 increases material and manufactures shower nozzle, it is characterised in that multiple within every grade of barrel
Heat-conducting plate is that homogeneous angular is arranged in a crossed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575171.6A CN106217868B (en) | 2016-07-20 | 2016-07-20 | A kind of vapour-pressure type increasing material manufacturing shower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610575171.6A CN106217868B (en) | 2016-07-20 | 2016-07-20 | A kind of vapour-pressure type increasing material manufacturing shower nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106217868A true CN106217868A (en) | 2016-12-14 |
| CN106217868B CN106217868B (en) | 2018-04-03 |
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ID=57531759
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610575171.6A Active CN106217868B (en) | 2016-07-20 | 2016-07-20 | A kind of vapour-pressure type increasing material manufacturing shower nozzle |
Country Status (1)
| Country | Link |
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| CN (1) | CN106217868B (en) |
Cited By (3)
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| CN107671981A (en) * | 2017-10-20 | 2018-02-09 | 龙泉市金宏瓷业有限公司 | A kind of ceramic 3D printer nozzle Multistage Control mechanism and control method |
| CN110370621A (en) * | 2019-06-17 | 2019-10-25 | 南京理工大学 | A kind of energetic material increasing material manufacturing plunger type continuous extrusion apparatus |
| CN111958972A (en) * | 2020-09-22 | 2020-11-20 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107671981A (en) * | 2017-10-20 | 2018-02-09 | 龙泉市金宏瓷业有限公司 | A kind of ceramic 3D printer nozzle Multistage Control mechanism and control method |
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| CN110370621A (en) * | 2019-06-17 | 2019-10-25 | 南京理工大学 | A kind of energetic material increasing material manufacturing plunger type continuous extrusion apparatus |
| CN110370621B (en) * | 2019-06-17 | 2021-05-07 | 南京理工大学 | Plunger type continuous extrusion device for additive manufacturing of energetic material |
| CN111958972A (en) * | 2020-09-22 | 2020-11-20 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
| CN111958972B (en) * | 2020-09-22 | 2022-03-18 | 北京信息职业技术学院 | 3D beats printer head and 3D printer |
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| Publication number | Publication date |
|---|---|
| CN106217868B (en) | 2018-04-03 |
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