CN106891463A - A kind of Coaxial nozzle preparation method - Google Patents
A kind of Coaxial nozzle preparation method Download PDFInfo
- Publication number
- CN106891463A CN106891463A CN201710120706.5A CN201710120706A CN106891463A CN 106891463 A CN106891463 A CN 106891463A CN 201710120706 A CN201710120706 A CN 201710120706A CN 106891463 A CN106891463 A CN 106891463A
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- China
- Prior art keywords
- needle tubing
- polymer
- coaxial nozzle
- nested
- microns
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
- B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
- B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Analysis And Handling Materials Therefor (AREA)
Abstract
The invention belongs to microfluid printing technique field, and a kind of Coaxial nozzle preparation method is disclosed, comprised the following steps：1) outer needle tubing is inserted into one end of inner needle tube and the other end of inner needle tube is exposed to outer needle tubing, then the inner needle tube is collectively forming nested needle tubing assembly with outer needle tubing；2) to liquid, curable polymer is poured into container, then nested needle tubing assembly level is put into the polymer；3) the polymer curing molding is made；4) the shower nozzle base substrate is taken out and is cut from container, the outer needle tubing is taken away；5) punch on polymer as the outer tunnel entrance of Coaxial nozzle, the outer tunnel entrance is connected with the outer fluid passage of the Coaxial nozzle.The present invention can realize high-precision internal and external channel center alignment, and can be used the good flexible polymer of translucency to realize the visualizing monitor to Coaxial nozzle interior flow field simultaneously, make simple time saving, and low cost, efficiency is higher.
Description
Technical field
The invention belongs to microfluid printing technique field, more particularly, to a kind of Coaxial nozzle preparation method.
Background technology
In flexible electronic, the Disciplinary Frontiers such as bioengineering have a wide range of applications printing technique based on microfluid.With
The development of technology, the printing of homogenous material cannot meet demand.Compared to traditional single shaft shower nozzle, Coaxial nozzle can be same
When print two or more materials, and on-line mixing disposably forms the labyrinths such as package structure, hollow structure.
The multiplex metal parts of traditional Coaxial nozzle, by the way of internal and external channel separate machined recombinant, it is more difficult to carry out
The alignment of shower nozzle internal and external channel central shaft.It is processed using precision equipment, the right of shower nozzle internal and external channel central shaft can be ensured
Together, but due to relying on precision optical machinery, its cost of manufacture is higher.
The method of 3D printing can conveniently print baroque Coaxial nozzle and ensure the right of internal and external pin tube hub axle
Together, but than relatively time-consuming during existing 3D printing technique printing fine structure, the process-cycle is long, with high costs.
In general, traditional Coaxial nozzle is made as ensureing the alignment accuracy of internal and external channel, the requirement to process equipment
It is higher, there is difficulty of processing greatly, fabrication cycle is long, the problems such as relatively costly.With flexible electronic, the field such as bioengineering air exercise
The raising of required precision is printed, also needs to carry out precise control to institute's printing-fluid in print procedure.Due to conventional coaxial shower nozzle work
The limitation of skill, is opaque material used by shower nozzle, therefore cannot be flowed inside real-time monitored shower nozzle in actual print procedure
The mobility status of body, cannot also realize the visualizing monitor to fluid.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of Coaxial nozzle preparation method, system
Make simple time saving, low cost, efficiency is higher.
To achieve the above object, it is proposed, according to the invention, there is provided a kind of Coaxial nozzle preparation method, it is characterised in that including
Following steps：
1) outer needle tubing is inserted into one end of inner needle tube and the other end of inner needle tube is exposed to outer needle tubing, then the interior pin
Pipe is collectively forming nested needle tubing assembly with outer needle tubing, wherein, the outside diameter d of the inner needle tube1With the internal diameter d of outer needle tubing2Relation
It is 0≤d2-d1≤ 30 microns；
2) to liquid, curable polymer is poured into container, then by step 1) obtain nested needle tubing assembly
Level is put into the polymer, so that the nested needle tubing assembly is sunk in the polymer；
3) after the nested needle tubing assembly fully enters the polymeric inner, the polymer curing molding is made,
Then nested needle tubing assembly is stated in the polymer wrapped residence of solid-state, then polymer is collectively forming shower nozzle base with nested needle tubing assembly
Body；
4) the shower nozzle base substrate is taken out from container, the shower nozzle base substrate is cut with from the shower nozzle along cutting planes
Outer needle tubing is taken out in base substrate, wherein the cutting planes are coplanar away from the end face of inner needle tube with the outer needle tubing, then will be described outer
Needle tubing takes outer fluid passage of the produced space as Coaxial nozzle away, and the inner chamber of the inner needle tube is used as Coaxial nozzle
Internal layer fluid passage；
5) punch on polymer as the outer tunnel entrance of Coaxial nozzle, the outer tunnel entrance and the coaxial spray
The outer fluid passage connection of head.
Preferably, the polymer is 9 for performed polymer is matched with crosslinking agent in PDMS, and PDMS:1 or 10:1.
Preferably, the container is culture dish.
Preferably, step 3) in by heating or illumination make the polymer curing molding.
Preferably, the internal diameter of the inner needle tube is 200 microns and its external diameter is 400 microns, the internal diameter of the outer needle tubing
For 400~430 microns and its external diameter are 800 microns.
In general, by the contemplated above technical scheme of the present invention compared with prior art, can obtain down and show
Beneficial effect：
The Coaxial nozzle preparation method that the present invention is provided, it combines polymeric material with hard needle tubing by the mode of casting,
The polymeric material curing molding is made by certain external condition, and outer tunnel is made with the technique for being similar to the demoulding, it is possible to achieve
High-precision internal and external channel center alignment, and can be used the good flexible polymer of translucency to realize flowing Coaxial nozzle inside simultaneously
The visualizing monitor of field, makes simple time saving, and low cost, efficiency is higher.
Brief description of the drawings
Fig. 1 is the process chart that the present invention obtains Coaxial nozzle；
Fig. 2 (a)~Fig. 2 (e) is the schematic diagram to form Coaxial nozzle.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each implementation method
Not constituting conflict each other can just be mutually combined.
With reference to each accompanying drawing, a kind of Coaxial nozzle preparation method, it is characterised in that comprise the following steps：
1) outer needle tubing 2 is inserted into one end of inner needle tube 1 and the other end of inner needle tube 1 is exposed to outer needle tubing 2, then it is described
Inner needle tube 1 is collectively forming nested needle tubing assembly 5 with outer needle tubing 2, wherein, the outside diameter d of the inner needle tube 11In outer needle tubing 2
Footpath d2Relation be 0≤d2-d1≤ 30 microns；
2) to liquid, curable polymer 4 is poured into container 3, then by step 1) obtain nested needle tubing combination
The level of body 5 is put into the polymer 4, so that the nested needle tubing assembly 5 is sunk in the polymer 4；
3) after the nested needle tubing assembly 5 fully enters the inside of the polymer 4, it is solidified into the polymer 4
Type, then the polymer 4 of solid-state wrap the nested needle tubing assembly 5, then polymer 4 and the common shape of nested needle tubing assembly 5
Into shower nozzle base substrate；
4) the shower nozzle base substrate is taken out in the container 3, the shower nozzle base substrate is cut with from the spray along cutting planes
Outer needle tubing 2 is taken out in head base substrate, wherein the cutting planes are coplanar away from the end face of inner needle tube 1 with the outer needle tubing 2, then by institute
State outer needle tubing 2 and take outer fluid passage 6 of the produced space as Coaxial nozzle away, the inner chamber of the inner needle tube 1 is used as same
The internal layer fluid passage 7 of axle shower nozzle；
5) punched on polymer 4 as the outer tunnel entrance 8 of Coaxial nozzle, the outer tunnel entrance 8 is same with described
The outer fluid passage 6 of axle shower nozzle is connected.
Further, the polymer 4 is 9 for performed polymer is matched with crosslinking agent in PDMS, and PDMS:1 or 10:1, it is described
Container 3 is culture dish.
Further, step 3) in by heating or illumination make the curing molding of the polymer 4.
Further, the internal diameter of the inner needle tube 1 is that 200 microns and its external diameter are 400 microns, the outer needle tubing 2 it is interior
Footpath is 400~430 microns and its external diameter is 800 microns.
Reference picture 2 (a)~Fig. 2 (e) specifically makes the process of Coaxial nozzle, the Coaxial nozzle making side using part
Method is comprised the following steps：
Step one, there is provided two hollow needle tubes are simultaneously mutually nested.Specifically, in described two needle tubings, the external diameter of inner needle tube 1 with
The internal diameter of outer needle tubing 2 is close.
Step 2, there is provided the material of polymer 4 of liquid.Specifically, the material of the polymer 4 can be under certain external condition
Curing molding.In present embodiment, the polymer 4 is that performed polymer is matched as 9 with crosslinking agent:1 or 10:1 PDMS, it is colourless
It is bright, heating curable.
Step 3, there is provided the smooth container 3 of an inner surface, and one layer is poured into the container 3 in advance using cup 10
The polymer 4 of thickness is determined, depending on PDMS thickness can be according to subsequent technique：A) even select first to pour into one layer of PDMS, treat it
Level pours into the mode that one layer of PDMS is packaged again after nested needle tubing is placed on its surface after semi-solid preparation, then two-layer PDMS thickness
It is 3 millimeters；If level places nested needle tubing on its surface after b) one layer of PDMS is poured into selection, under treating nested needle tubing voluntarily
The mode being packaged in PDMS is immersed to, then PDMS thickness is 6 millimeters.
Step 4, there is provided make the external condition of the curing molding of the polymer 4, such as heats, plus illumination etc..Specifically, institute
Stating external condition action time and intensity need to determine depending on the number of material.In present embodiment, the external condition is thermal source, temperature
It is 75 degrees Celsius to spend, 10 minutes heat times.
Step 5, takes out the polymer 4 and the outer needle tubing 2 in nested needle tubing assembly 5, and the outer needle tubing 2 takes product away
Raw space is internal layer fluid passage 7 as outer fluid passage 6, in the inner needle tube 1.In present embodiment, the internal layer
200 microns of 7 diameter of fluid passage, 400 microns of 6 internal diameter of the outer fluid passage, 800 microns of external diameter.
Step 6, perpendicular to the polymer 4 and the punching of needle tubing assembly surface UNICOM's assembly surface and outer tunnel, institute
Hole is stated as outer tunnel entrance 8.In present embodiment, punched using 1040 microns of dispensing needle head of external diameter, the hole is straight
1040 microns of footpath.
The Coaxial nozzle preparation method that the present invention is provided, it is by the mode of casting by the material of polymer 4 with hard needle tubing group
Close, be molded the material solidification of the liquid polymer 4, make outer tunnel with the technique of the similar demoulding, it is possible to achieve high accuracy
Internal and external channel center alignment, and can be used the good flexible polymer 4 of translucency to realize to Coaxial nozzle interior flow field simultaneously
Visualizing monitor, makes simple time saving, and low cost, efficiency is higher.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, it is not used to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc., all should include
Within protection scope of the present invention.
Claims (5)
1. a kind of Coaxial nozzle preparation method, it is characterised in that comprise the following steps：
1) outer needle tubing is inserted into one end of inner needle tube and the other end of inner needle tube is exposed to outer needle tubing, then the inner needle tube and
Outer needle tubing is collectively forming nested needle tubing assembly, wherein, the outside diameter d of the inner needle tube1With the internal diameter d of outer needle tubing2Relation be 0
≤d2-d1≤ 30 microns；
2) to liquid, curable polymer is poured into container, then by step 1) obtain nested needle tubing assembly level
It is put into the polymer, so that the nested needle tubing assembly is sunk in the polymer；
3) after the nested needle tubing assembly fully enters the polymeric inner, make the polymer curing molding, then it is solid
Nested needle tubing assembly is stated in the polymer wrapped residence of state, then polymer is collectively forming shower nozzle base substrate with nested needle tubing assembly；
4) the shower nozzle base substrate is taken out from container, the shower nozzle base substrate is cut with from the shower nozzle base substrate along cutting planes
The outer needle tubing of middle taking-up, wherein the cutting planes are coplanar away from the end face of inner needle tube with the outer needle tubing, then by the outer needle tubing
Space produced by taking away as Coaxial nozzle outer fluid passage, the inner chamber of the inner needle tube as Coaxial nozzle internal layer
Fluid passage；
5) punch on polymer as the outer tunnel entrance of Coaxial nozzle, the outer tunnel entrance and the Coaxial nozzle
Outer fluid passage is connected.
2. a kind of Coaxial nozzle preparation method according to claim 1, it is characterised in that the polymer is PDMS, and
And performed polymer and crosslinking agent proportioning are 9 in PDMS:1 or 10:1.
3. a kind of Coaxial nozzle preparation method according to claim 1, it is characterised in that the container is culture dish.
4. a kind of Coaxial nozzle preparation method according to claim 1, it is characterised in that step 3) in by heating or light
According to making the polymer curing molding.
5. a kind of Coaxial nozzle preparation method according to claim 1, it is characterised in that the internal diameter of the inner needle tube is
200 microns and its external diameter are 400 microns, the outer needle tubing internal diameter is for 400~430 microns and its external diameter is 800 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120706.5A CN106891463B (en) | 2017-03-02 | 2017-03-02 | A kind of Coaxial nozzle production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710120706.5A CN106891463B (en) | 2017-03-02 | 2017-03-02 | A kind of Coaxial nozzle production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106891463A true CN106891463A (en) | 2017-06-27 |
| CN106891463B CN106891463B (en) | 2018-12-28 |
Family
ID=59185875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710120706.5A Active CN106891463B (en) | 2017-03-02 | 2017-03-02 | A kind of Coaxial nozzle production method |
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| Country | Link |
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| CN (1) | CN106891463B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108215157A (en) * | 2018-02-27 | 2018-06-29 | 浙江大学 | The flexible circuit 3 D-printing device that a kind of macromolecule liquid metal prints altogether |
| CN108313977A (en) * | 2018-01-19 | 2018-07-24 | 东南大学 | A kind of preparation method of expansible thimble tube micro-fluidic chip |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169417A (en) * | 1984-09-13 | 1986-04-10 | Sapporo Sanki Kk | Manufacture of heat insulating tube |
| CN202684335U (en) * | 2012-01-19 | 2013-01-23 | 昆山思拓机器有限公司 | Coaxial nozzle used for thin-wall tube laser micromachining |
| CN103572386A (en) * | 2013-10-12 | 2014-02-12 | 东华大学 | Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof |
| CN204550806U (en) * | 2015-03-26 | 2015-08-12 | 胡权 | A kind of shower nozzle |
-
2017
- 2017-03-02 CN CN201710120706.5A patent/CN106891463B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169417A (en) * | 1984-09-13 | 1986-04-10 | Sapporo Sanki Kk | Manufacture of heat insulating tube |
| CN202684335U (en) * | 2012-01-19 | 2013-01-23 | 昆山思拓机器有限公司 | Coaxial nozzle used for thin-wall tube laser micromachining |
| CN103572386A (en) * | 2013-10-12 | 2014-02-12 | 东华大学 | Flat plate pinhole coaxial electrostatic spinning fiber composite spinning jet and spinning method thereof |
| CN204550806U (en) * | 2015-03-26 | 2015-08-12 | 胡权 | A kind of shower nozzle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313977A (en) * | 2018-01-19 | 2018-07-24 | 东南大学 | A kind of preparation method of expansible thimble tube micro-fluidic chip |
| CN108313977B (en) * | 2018-01-19 | 2019-10-11 | 东南大学 | A kind of preparation method of expansible thimble tube micro-fluidic chip |
| CN108215157A (en) * | 2018-02-27 | 2018-06-29 | 浙江大学 | The flexible circuit 3 D-printing device that a kind of macromolecule liquid metal prints altogether |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106891463B (en) | 2018-12-28 |
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