CN208020751U - Liquid nitrogen feedway for biological 3D printing - Google Patents
Liquid nitrogen feedway for biological 3D printing Download PDFInfo
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- CN208020751U CN208020751U CN201820222928.8U CN201820222928U CN208020751U CN 208020751 U CN208020751 U CN 208020751U CN 201820222928 U CN201820222928 U CN 201820222928U CN 208020751 U CN208020751 U CN 208020751U
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- liquid nitrogen
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- stomata
- printing
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Abstract
The utility model discloses a kind of liquid nitrogen feedways for biological 3D printing, it include the liquid nitrogen container for being fixed in printer outer wall, liquid nitrogen container passes through the first piping connection supercharging device, supercharging device has the nozzle of mounting hole by the second piping connection, nozzle set is mounted in the outside of print head, multiple metal fins and multiple first stomatas are arranged at intervals on the outer circumference surface of nozzle, nozzle is towards being arranged at intervals with multiple second stomatas on the end face of printing surface, nozzle is built-in with gas passage, and each first stomata and each second stomata are penetrated through with gas passage respectively.Liquid nitrogen enters the second pipeline after supercharging device is pressurized, it after nozzle, then is entered in the working space of printing by each first stomata and each second stomata respectively, to realize the effective temperature-reducing to printer model, and then rapid shaping, meet the needs of using；The material that cools down simultaneously is liquid nitrogen, avoids printer model surface generation ripple and material from squeezing out the problems such as uneven, improves print quality.
Description
Technical field
The utility model is related to 3D printing technique fields more particularly to a kind of liquid nitrogen for biological 3D printing to supply dress
It sets.
Background technology
3D (three dimensions) printing be one kind based on digital model file, in conjunction with area of computer aided, by successively beating
Print a variety of materials are compared to construct the novel increases material manufacturing technology of object with traditional manufacturing technique, and 3D printing technique has quick
The characteristics of molding.3D printing technique since the advent of the world in aerospace, mechanical manufacturing field extensive use, and achieves huge
Success.Currently, 3D printing technique is gradually applied to biotechnology, biological mould can be quickly obtained by this kind of technology
Type so as to effectively carry out biological study, and then brings tremendous contribution for biological field.
But in order to which requirements, the 3D printings such as the precision that ensures model need to carry out at low temperature, that is, exist in biological field
During 3D printing, after extrusion equipment needs to squeeze out printed material according to printing, need to be quickly cooled down printed material,
So that it is fixed shape as early as possible, meets the needs of printing.Existing 3D printer generally uses refrigerating fan, however refrigerating fan
It is be easy to cause during rotation and squeezes out nozzle vibrations, cause printer model surface to generate ripple, to influence printing precision
Problem, while excessive will also result in of fan air-supply range squeezes out nozzle cooling material is caused to squeeze out non-uniform problem, this all can
Have an adverse effect to final printing effect.
Utility model content
Purpose of the utility model is to solve above-mentioned at least one problem, which is by following technology
What scheme was realized.
The utility model provides a kind of liquid nitrogen feedway for biological 3D printing, includes to be fixed in outside printer
The liquid nitrogen container of wall, the liquid nitrogen container have by the first piping connection supercharging device, the supercharging device by the second piping connection
There is a nozzle of mounting hole, the nozzle is sleeved on the outside of print head by the mounting hole, on the outer circumference surface of the nozzle
It is arranged at intervals with multiple metal fins and multiple first stomatas, the nozzle is multiple towards being arranged at intervals on the end face of printing surface
Second stomata, the nozzle are built-in with gas passage, each first stomata and each second stomata respectively with the gas
Channel penetrates through.
Preferably, the nozzle includes first with the first gas circuit sequentially coaxially connected, with the second gas circuit
Second and the third portion with third gas circuit, first gas circuit, second gas circuit and the third gas circuit are sequentially communicated,
First gas circuit passes through the air admission hole being opened on described first and second pipeline connection, the third gas circuit difference
It is connected to each first stomata and each second stomata.
Preferably, first stomata is arranged at equal intervals on the outer circumference surface in the third portion, third portion direction
The end face of printing surface is provided with inner chamfer inclined-plane, and second stomata is arranged at equal intervals on the inner chamfer inclined-plane.
Preferably, described first is cylindrical structure, and first gas circuit is to be opened in the ring of first inside
The axis direction of shape cavity, first gas circuit is consistent with the axis direction of the mounting hole.
Preferably, described second is cylindrical structure, and second gas circuit is to be opened in the ring of second inside
The axis direction of shape cavity, second gas circuit is consistent with the axis direction of the mounting hole.
Preferably, the third portion is cylindrical structure, and the third gas circuit is the ring being opened in inside the third portion
The axis direction of shape cavity, the third gas circuit is consistent with the axis direction of the mounting hole.
Preferably, first diameter is equal to the diameter in the third portion, and second diameter is less than described
First diameter, each metal fin are set at equal intervals on second outer circumference surface.
Preferably, the metal fin is copper material.
Preferably, the supercharging device is booster pump, and the booster pump is electrically connected with the controller of printer, the supercharging
Pump can make second pipeline ventilate or die.
Preferably, second pipeline is bourdon tube.
Liquid nitrogen feedway provided by the utility model includes the liquid nitrogen container for being fixed in printer outer wall, the liquid
Nitrogen tank has the nozzle of mounting hole, institute by the second piping connection by the first piping connection supercharging device, the supercharging device
The outside that nozzle set is mounted in print head is stated, multiple metal fins and multiple first are arranged at intervals on the outer circumference surface of the nozzle
Stomata, for the nozzle towards multiple second stomatas are arranged at intervals on the end face of printing surface, the nozzle is built-in with gas passage,
Each first stomata and each second stomata are penetrated through with the gas passage respectively.In the print head course of work, liquid nitrogen supplies
It is opened simultaneously to device, liquid nitrogen enters supercharging device by the first pipeline, and liquid nitrogen enters the second pipe after supercharging device is pressurized
Road after nozzle, then is entered by each first stomata and each second stomata in the working space of printing respectively, to
It realizes the effective temperature-reducing to printer model, and then rapid shaping, meets the needs of using；The material that cools down simultaneously is liquid nitrogen, can
The problems such as avoiding printer model surface from generating ripple and uneven material extrusion, effectively improves printing precision and quality.
In above structure, the liquid nitrogen container for containing liquid nitrogen is fixed on by fixing device on the outer wall of printer, liquid nitrogen container
Outlet be connected with the first pipeline, the first pipeline is connected to the second pipeline by supercharging device, and the second pipeline is connected to nozzle, printing
Head is fixed in the mounting hole of nozzle, and multiple first stomatas and multiple are arranged with print head associated movement in nozzle on the print head
Second stomata, liquid nitrogen enter the working face of printer, while each first stomata interval by each first stomata and each second stomata
It is arranged on the outer circumference surface of nozzle, each second stomata is arranged at intervals on nozzle towards on the end face of printing surface, in addition in nozzle
Outer circumference surface on be arranged at intervals with multiple metal fins.
Ensure that liquid nitrogen supply is in constant pressure sustainable supply state by the way that supercharging device is arranged, avoids due to liquid nitrogen insufficient pressure
Working space can not be effectively reached, to influence cooling effect the case where occurs；Multiple metal fins are set on nozzle simultaneously,
Further shorten the time of working space cooling by the heat exchange action of each metal fin and ambient enviroment, and then ensures printing
The quality of model；In addition each first stomata is opened in the outer circumference surface of nozzle, each second stomata is opened in nozzle towards printing
On the end face in face (liquid nitrogen is consistent with the discharging direction of print head by the emission direction of the second stomata at this time), pass through both bores
Installation position enable to the range bigger that liquid nitrogen is distributed around print head, stable low temperature space can be formed, to
Enable to print head spray printed material can rapid shaping, shorten the hardening time of model, effectively improve the matter of printing
Amount.
Description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit are common for this field
Technical staff will become clear.Attached drawing only for the purpose of illustrating preferred embodiments, and is not considered as to this practicality
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of specific implementation mode of liquid nitrogen feedway provided by the utility model；
Fig. 2 is the structural schematic diagram of nozzle shown in Fig. 1；
Fig. 3 is the structural schematic diagram of another angle of nozzle shown in Fig. 2；
Fig. 4 is the A-A sectional views of nozzle shown in Fig. 3.
Reference numeral
1 is liquid nitrogen container；
2 be the first pipeline；
3 be supercharging device；
4 be the second pipeline；
5 be nozzle, and 51 be first, and 511 be air admission hole, and 512 be mounting hole, and 513 be the first gas circuit, and 52 be second,
521 be the second gas circuit, and 53 be third portion, and 531 be the first stomata, and 532 be the second stomata, and 533 be inner chamfer inclined-plane, and 534 be the
Three gas circuits；
6 be print head；
7 devices in order to control.
Specific implementation mode
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to be best understood from the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened completely is communicated to those skilled in the art.
It is a kind of specific implementation mode of liquid nitrogen feedway provided by the utility model to please refer to Fig.1 to Fig. 4, Fig. 1
Structural schematic diagram；Fig. 2 is the structural schematic diagram of nozzle shown in Fig. 1；Fig. 3 is that the structure of another angle of nozzle shown in Fig. 2 is shown
It is intended to；Fig. 4 is the A-A sectional views of nozzle shown in Fig. 3.
In a specific embodiment, liquid nitrogen feedway provided by the utility model includes to be fixed in printing
The liquid nitrogen container 1 of machine outer wall, the liquid nitrogen container 1 connect supercharging device 3 by the first pipeline 2, and the supercharging device 3 passes through the second pipe
Nozzle 5 of the connection of road 4 with mounting hole 512, the nozzle 5 are sleeved on the outside of print head 6, the spray by the mounting hole
It is arranged at intervals with multiple metal fins and multiple first stomatas 531 on first 5 outer circumference surface, the nozzle 5 is towards printing surface
It is arranged at intervals with multiple second stomatas 532 on end face, the nozzle 5 is built-in with gas passage, each first stomata 531 and each
Second stomata 532 is penetrated through with the gas passage respectively.In 6 course of work of print head, liquid nitrogen feedway opens simultaneously,
Liquid nitrogen enters supercharging device 3 by the first pipeline 2, and liquid nitrogen enters the second pipeline 4 after the supercharging of supercharging device 3, subsequently into
It after nozzle 5, then is entered in the working space of printing by each first stomata 531 and each second stomata 532 respectively, to realize
To the effective temperature-reducing of printer model, and then rapid shaping, meet the needs of using；The material that cools down simultaneously is liquid nitrogen, can be avoided
Printer model surface generates ripple and material squeezes out the problems such as uneven, effectively improves printing precision and quality.
In above structure, the liquid nitrogen container 1 for containing liquid nitrogen is fixed on by fixing device on the outer wall of printer, liquid nitrogen container
1 outlet is connected with the first pipeline 2, and the first pipeline 2 is connected to the second pipeline 4 by supercharging device 3, and the second pipeline 4 connects with nozzle 5
Logical, print head 6 is fixed in the mounting hole 512 of nozzle 5, and nozzle 5 is arranged multiple with 6 associated movement of print head on print head 6
First stomata 531 and multiple second stomatas 532, liquid nitrogen enter printer by each first stomata 531 and each second stomata 532
Working face, while each first stomata 531 is arranged at intervals on the outer circumference surface of nozzle 5, each second stomata 532 is arranged at intervals on spray
First 5, towards on the end face of printing surface, are in addition arranged at intervals with multiple metal fins on the outer circumference surface of nozzle 5.
Ensure that liquid nitrogen supply is in constant pressure sustainable supply state by the way that supercharging device 3 is arranged, avoids because of liquid nitrogen insufficient pressure
And working space can not be effectively reached, to influence cooling effect the case where occurs；Multiple metal wings are set on nozzle 5 simultaneously
Piece is further shortened the time of working space cooling by the heat exchange action of each metal fin and ambient enviroment, and then ensured
The quality of printer model；In addition each first stomata 531 is opened in the outer circumference surface of nozzle 5, each second stomata 532 is opened in spray
First 5 towards on the end face of printing surface (at this time liquid nitrogen by the emission direction and print head 6 of the second stomata 532 discharging direction one
Cause), the range bigger that liquid nitrogen is distributed around print head 6 is enabled to by the installation position of both bores, can be formed steady
Fixed low temperature space so that print head 6 spray printed material can rapid shaping, when shortening the solidification of model
Between, effectively improve the quality of printing.
It is to be appreciated that it is provided with thermal insulation layer between above-mentioned print head 6 and nozzle 5, since liquid nitrogen enters nozzle 5,
Under the action of heat exchange, nozzle 5 is in low-temperature condition, can effectively be kept away by the way that thermal insulation layer is arranged between print head 6 and nozzle 5
Exempting from adverse effect of the nozzle 5 under low-temperature condition to print head 6, (i.e. cryogenic conditions lower nozzle 5 to beat by heat exchange
Print head 6 is in low-temperature condition, be easy to cause printed material at this time and cures inside print head 6, leads to the injection of print head 6
The case where speed of printed material reduces and print head 6 blocks) so that print job is smoothed out, and effectively improves working efficiency,
Reduce cost of equipment maintenance.
It is arranged it should be pointed out that metal fin and the first stomata 531 are interval, under nozzle 5 is in running order, metal
Fin is located at the top of the first stomata 531, becomes gaseous state after entering print space due to the liquid nitrogen sprayed in the first stomata 531,
It is now in the nitrogen ascending motion of low-temperature condition, metal fin is set to 531 top of the first stomata, the low temperature nitrogen of rising
The carry out heat exchange for enabling to metal fin, avoids the waste of liquid nitrogen resource, to effectively reduce the cost of printing.
Be further understood that, the nozzle 5 include sequentially coaxially connect first 51 with the first gas circuit 513,
Second 52 with the second gas circuit 521 and the third portion 53 with third gas circuit 534, first gas circuit 513, described second
Gas circuit 521 and the third gas circuit 534 are sequentially communicated, first gas circuit 513 by be opened on described first 51 into
Stomata 511 is connected to second pipeline 4, the third gas circuit 534 respectively with each first stomata 531 and each described second
Stomata 532 is connected to.In above structure, gas circuit is respectively arranged with inside three each sections of nozzle 5, three gas circuits are mutually communicated shape
It at gas passage, on the one hand can effectively ensure that liquid nitrogen can be efficiently entering inside nozzle 5, and made by internal gas circuit
Liquid nitrogen is buffered, and so as to uniformly and effectively be sprayed from the first hole and the second hole, and then ensures cooling-down effect, on the other hand
It is uniform that it can be coaxially disposed the liquid nitrogen for enabling to 6 surrounding of print head to spray by above three part, avoid around print head 6
There is the case where phenomenon uneven in temperature causes pattern contract to deform, to which the quality of printer model be effectively ensured.
Further, first stomata 531 is arranged at equal intervals on the outer circumference surface in the third portion 53, the third
The end face of portion 53 towards printing surface is provided with inner chamfer inclined-plane 533, and second stomata 532 is arranged at equal intervals in the inner chamfer
On inclined-plane 533.Inner chamfer inclined-plane 533 is set on end face of the third portion 53 towards printing surface, the second stomata 532 is opened in interior
On chamfering inclined-plane 533, when liquid nitrogen can be sufficiently formed stable low-temperature space after the ejection of each second stomata 532, and pass through
Ramp structure enables to the liquid nitrogen after gasification that can form cyclone, so as to effectively extend biography of the liquid nitrogen in print space
Defeated distance, and then cooling range can be increased so that the hardening time of printer model effectively shortens, and improves the efficiency of printing,
In addition, by being arranged the first stomata 531 on the outer circumference surface in third portion 53, the liquid by the second stomata 532 is enabled to
Nitrogen can be fused effectively with by the liquid nitrogen of the first stomata 531 in gasification, to form stable cooled region, in turn
So that cooling effect is guaranteed.
Further, described first 51 is cylindrical structure, and first gas circuit 513 is to be opened in described first 51
Internal annular housing, the axis direction of first gas circuit 513 are consistent with the axis direction of the mounting hole 512.By this
Structure enables to the cooled region formed around print head 6 uniform, avoids the occurrence of uneven in temperature around print head 6 make
At workpiece shrink it is uneven, so as to avoid the crackle that occurs of printer model surface fracture is set the phenomenon that, effectively increase
The quality of printer model.
Into one, described second 52 is cylindrical structure, and second gas circuit 521 is to be opened in described second 52
The axis direction of the annular housing in portion, second gas circuit 521 is consistent with the axis direction of the mounting hole 512.Pass through the knot
Structure enables to the cooled region formed around print head 6 uniform, avoids the occurrence of uneven in temperature around print head 6 cause
Workpiece shrink it is uneven, so as to avoid the crackle that occurs of printer model surface fracture is set the phenomenon that, effectively increase and beat
The quality of stamp type.
Preferably, the third portion 53 is cylindrical structure, and the third gas circuit 534 is to be opened in the third portion 53
The axis direction of the annular housing in portion, the third gas circuit 534 is consistent with the axis direction of the mounting hole 512.Pass through the knot
Structure enables to the cooled region formed around print head 6 uniform, avoids the occurrence of uneven in temperature around print head 6 cause
Workpiece shrink it is uneven, so as to avoid the crackle that occurs of printer model surface fracture is set the phenomenon that, effectively increase and beat
The quality of stamp type.
Specifically understand, first 51 diameter is equal to the diameter in the third portion 53, described second 52
Diameter is less than first 51 diameter, and each metal fin is set to second 52 outer circumference surface at equal intervals
On.Above-mentioned each metal fin is arranged between first 51 and third portion 53, while each radiating fin is respectively at second 52
Outer circumference surface is affixed, enables to the low temperature of nozzle 5 by the heat exchange of each fin realization and external environment with this configuration, carries
The efficiency of high heat exchange, while the area that can effectively increase the heat exchange of nozzle 5 by the way that multiple fins are arranged, to effectively contract
The time of short cooling down, and then the production efficiency of printer model is improved, thereby reduce the cost of manufacture.
Specifically, the metal fin is copper material.The heat conductivility of copper material is good, has good heat exchange performance,
The rate of heat exchange can be further increased by using the material, shortens the printer model cured time, improve working efficiency.
Specifically, the supercharging device 3 is booster pump, and the booster pump is electrically connected with the controller 7 of printer, the increasing
Press pump can make second pipeline 4 ventilate or die.By the way that booster pump to be connected to the controller 7 of printer, it can realize and beat
The integrated of machine electric appliance component is printed, reduces the cost of device fabrication, while improving the space availability ratio of printer；It utilizes simultaneously
Controller 7 controls being closed on or off for booster pump, and to realize the ventilation of the second pipeline 4 or die, this kind of structure is easy to
Control, while can ensure good control effect.
Specifically, second pipeline 4 is bourdon tube.On the one hand above structure can ensure that nozzle 5 is moved with print head 6
There can be enough connecting lines on the other hand can realize the second pipeline 4 to ensure the cooling of liquid nitrogen during dynamic
Voluntarily store, to avoid the occurrence of pipeline winding caused by fracture and so on, ensure production smooth effective progress.
It should be understood that although multiple element, portion can be described using term first, second, third, etc. in the text
Part, region, layer and/or section still these component, assembly units, region, layer and/or are limited by these terms than Duan Buying.
These terms only can be used for distinguishing a component, assembly unit, region, layer or section with another region, layer or section.Unless
Context is it is manifestly intended that when otherwise the term and other numerical terms of such as " first ", " second " etc use in the text
Sequence or order is not implied that.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
It is confined to this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model answers institute
It states and is subject to the protection scope in claims.
Claims (10)
1. a kind of liquid nitrogen feedway for biological 3D printing includes the liquid nitrogen container for being fixed in printer outer wall, feature
It is, the liquid nitrogen container has installation by the first piping connection supercharging device, the supercharging device by the second piping connection
The nozzle in hole, the nozzle are sleeved on the outside of print head by the mounting hole, are spaced and set on the outer circumference surface of the nozzle
It is equipped with multiple metal fins and multiple first stomatas, the nozzle is towards being arranged at intervals with multiple second gas on the end face of printing surface
Hole, the nozzle are built-in with gas passage, and each first stomata and each second stomata are passed through with the gas passage respectively
It is logical.
2. liquid nitrogen feedway according to claim 1, which is characterized in that the nozzle includes the tool sequentially coaxially connected
There are first of the first gas circuit, second with the second gas circuit and the third portion with third gas circuit, first gas circuit, institute
State the second gas circuit and the third gas circuit be sequentially communicated, first gas circuit by the air admission hole that is opened on described first with
Second pipeline connection, the third gas circuit are connected to each first stomata and each second stomata respectively.
3. liquid nitrogen feedway according to claim 2, which is characterized in that first stomata is arranged at equal intervals described
On the outer circumference surface in third portion, the end face of third portion towards the printing surface is provided with inner chamfer inclined-plane, second stomata etc.
It is arranged at intervals on the inner chamfer inclined-plane.
4. liquid nitrogen feedway according to claim 2, which is characterized in that described first is cylindrical structure, described
First gas circuit is to be opened in the annular housing of first inside, axis direction and the mounting hole of first gas circuit
Axis direction is consistent.
5. liquid nitrogen feedway according to claim 4, which is characterized in that described second is cylindrical structure, described
Second gas circuit is to be opened in the annular housing of second inside, axis direction and the mounting hole of second gas circuit
Axis direction is consistent.
6. liquid nitrogen feedway according to claim 5, which is characterized in that the third portion is cylindrical structure, described
Third gas circuit is the annular housing being opened in inside the third portion, axis direction and the mounting hole of the third gas circuit
Axis direction is consistent.
7. liquid nitrogen feedway according to claim 2, which is characterized in that first diameter is equal to the third
The diameter in portion, second diameter are less than first diameter, and each metal fin is set to described at equal intervals
On second outer circumference surface.
8. liquid nitrogen feedway according to claim 7, which is characterized in that the metal fin is copper fin.
9. liquid nitrogen feedway according to claim 1, which is characterized in that the supercharging device is booster pump, the increasing
Press pump is electrically connected with the controller of printer, and the booster pump can make second pipeline ventilate or die.
10. liquid nitrogen feedway according to claim 9, which is characterized in that second pipeline is bourdon tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820222928.8U CN208020751U (en) | 2018-02-08 | 2018-02-08 | Liquid nitrogen feedway for biological 3D printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820222928.8U CN208020751U (en) | 2018-02-08 | 2018-02-08 | Liquid nitrogen feedway for biological 3D printing |
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| Publication Number | Publication Date |
|---|---|
| CN208020751U true CN208020751U (en) | 2018-10-30 |
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ID=63902865
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820222928.8U Active CN208020751U (en) | 2018-02-08 | 2018-02-08 | Liquid nitrogen feedway for biological 3D printing |
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| Country | Link |
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| CN (1) | CN208020751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959659A (en) * | 2021-03-16 | 2021-06-15 | 白万涛 | 3D printer |
-
2018
- 2018-02-08 CN CN201820222928.8U patent/CN208020751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959659A (en) * | 2021-03-16 | 2021-06-15 | 白万涛 | 3D printer |
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