CN106891463B - A kind of Coaxial nozzle production method - Google Patents
A kind of Coaxial nozzle production method Download PDFInfo
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- CN106891463B CN106891463B CN201710120706.5A CN201710120706A CN106891463B CN 106891463 B CN106891463 B CN 106891463B CN 201710120706 A CN201710120706 A CN 201710120706A CN 106891463 B CN106891463 B CN 106891463B
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- Prior art keywords
- needle tubing
- polymer
- coaxial nozzle
- nested
- production method
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Classifications
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- 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 fields, and disclose a kind of Coaxial nozzle production method, the following steps are included: 1) outer needle tubing is inserted into one end of inner needle tube and the other end of inner needle tube is made to expose to outer needle tubing, then nested needle tubing assembly is collectively formed with outer needle tubing in the inner needle tube；2) liquid, curable polymer is poured into container, and then nested needle tubing assembly level is put into the polymer；3) make the polymer curing molding；4) the spray head green body is taken out and is cut out of container, the outer needle tubing is taken away；5) it punches on polymer using the outer tunnel entrance as Coaxial nozzle, the outer tunnel entrance is connected to the outer fluid passage of the Coaxial nozzle.High-precision internal and external channel center alignment may be implemented in the present invention, and the flexible polymer that can be used translucency good simultaneously realizes the visualizing monitor to Coaxial nozzle interior flow field, and production is simple time saving, and at low cost, efficiency is higher.
Description
Technical field
The invention belongs to microfluid printing technique fields, more particularly, to a kind of Coaxial nozzle production method.
Background technique
Based on the printing technique of microfluid in flexible electronic, the Disciplinary Frontiers such as bioengineering have a wide range of applications.With
The printing of the development of technology, homogenous material can no longer meet demand.Compared to traditional uniaxial spray head, Coaxial nozzle can be same
When print two or more materials, and on-line mixing disposably forms package structure, the labyrinths such as hollow structure.
Traditional Coaxial nozzle is mostly used metal parts, by the way of internal and external channel separate machined recombinant, it is more difficult to carry out
The alignment of spray head internal and external channel central axis.It is processed using precision equipment, can ensure pair of spray head internal and external channel central axis
Together, but due to relying on precision machinery, cost of manufacture is higher.
The method of 3D printing can be convenient pair for printing complicated Coaxial nozzle and guaranteeing internal and external pin tube hub axis
Together, than relatively time-consuming when but existing 3D printing technique prints fine structure, the process-cycle is long, with high costs.
In general, traditional Coaxial nozzle is made as guaranteeing the alignment accuracy of internal and external channel, the requirement to process equipment
It is higher, the problems such as it is big that there are difficulty of processing, and fabrication cycle is long, higher cost.With flexible electronic, the fields such as bioengineering air exercise
The raising of required precision is printed, also needs accurately to control institute's printing-fluid in print procedure.Due to conventional coaxial spray head work
The limitation of skill is opaque material used in spray head, therefore can not observe spray head inside stream in real time in practical print procedure
The mobility status of body also cannot achieve the visualizing monitor to fluid.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of Coaxial nozzle production method, systems
Work is simple time saving, and at low cost, efficiency is higher.
To achieve the above object, it is proposed, according to the invention, provide a kind of Coaxial nozzle production method, which is characterized 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 made to expose to outer needle tubing, then the interior needle
Nested needle tubing assembly is collectively formed with outer needle tubing in pipe, wherein the outside diameter d of the inner needle tube1With the internal diameter d of outer needle tubing2Relationship
For 0≤d2-d1≤ 30 microns；
2) liquid, curable polymer is poured into container, the nested needle tubing assembly for then obtaining step 1)
Level is put into the polymer, so that the nesting 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 nested needle tubing assembly is stated in solid polymer wrapped residence, then spray head base is collectively formed with nested needle tubing assembly in polymer
Body；
4) the spray head green body is taken out out of container, cuts the spray head green body along cutting planes with from the spray head
Outer needle tubing is taken out in green body, wherein the cutting planes are coplanar with the end face of the outer needle tubing far from inner needle tube, then it will be described outer
Needle tubing takes outer fluid passage of the generated space as Coaxial nozzle away, and the inner cavity of the inner needle tube is as Coaxial nozzle
Internal layer fluid channel；
5) it punches on polymer using the outer tunnel entrance as Coaxial nozzle, the outer tunnel entrance and the coaxial spray
The outer fluid passage connection of head.
Preferably, the polymer is PDMS, and performed polymer and crosslinking agent proportion are 9:1 or 10:1 in PDMS.
Preferably, the container is culture dish.
Preferably, the polymer curing molding is made by heating or illumination in step 3).
Preferably, the internal diameter of the inner needle tube is 200 microns and its outer diameter is 400 microns, the internal diameter of the outer needle tubing
For 400~430 microns and its outer diameter is 800 microns.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
Coaxial nozzle production method provided by the invention combines polymeric material with hard needle tubing by casting mode,
Make the polymeric material curing molding by certain external condition, and make outer tunnel with the technique of similar demoulding, may be implemented
High-precision internal and external channel center alignment, and the flexible polymer that can be used translucency good simultaneously is realized to Coaxial nozzle inside stream
The visualizing monitor of field, production is simple time saving, and at low cost, efficiency is higher.
Detailed description of the invention
Fig. 1 is the process flow 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 objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
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 in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Referring to each attached drawing, a kind of Coaxial nozzle production method, which comprises 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 made to expose to outer needle tubing 2, then it is described
Nested needle tubing assembly 5 is collectively formed with outer needle tubing 2 in inner needle tube 1, wherein the outside diameter d of the inner needle tube 11In outer needle tubing 2
Diameter d2Relationship be 0≤d2-d1≤ 30 microns；
2) liquid, curable polymer 4 is poured into container 3, the nested needle tubing for then obtaining step 1) combines
5 level of body is put into the polymer 4, so that the nesting needle tubing assembly 5 is sunk in the polymer 4；
3) after the nested needle tubing assembly 5 fully enters 4 inside of polymer, it is solidified into the polymer 4
Type, then solid polymer 4 wraps the nested needle tubing assembly 5, then polymer 4 and the common shape of nested needle tubing assembly 5
At spray head green body；
4) the spray head green body is taken out out of container 3, cuts the spray head green body along cutting planes with from the spray
Outer needle tubing 2 is taken out in head green body, wherein the cutting planes are coplanar with the outer end face of the needle tubing 2 far from inner needle tube 1, then by institute
It states outer needle tubing 2 and takes outer fluid passage 6 of the generated space as Coaxial nozzle away, the inner cavity of the inner needle tube 1 is as same
The internal layer fluid channel 7 of axis spray head；
5) on polymer 4 punching using the outer tunnel entrance 8 as Coaxial nozzle, the outer tunnel entrance 8 with it is described same
The outer fluid passage 6 of axis spray head is connected to.
Further, the polymer 4 is PDMS, and performed polymer and crosslinking agent proportion are 9:1 or 10:1 in PDMS, described
Container 3 is culture dish.
Further, 4 curing molding of polymer is made by heating or illumination in step 3).
Further, the internal diameter of the inner needle tube 1 is 200 microns and its outer diameter is 400 microns, the outer needle tubing 2 it is interior
Diameter is 400~430 microns and its outer diameter is 800 microns.
Referring to Fig. 2 (a)~Fig. 2 (e) specifically using the process of part production Coaxial nozzle, the Coaxial nozzle production side
Method the following steps are included:
Step 1 provides two hollow needle tubes and mutually nested.Specifically, in described two needle tubings, 1 outer diameter of inner needle tube with
Outer 2 internal diameter of needle tubing is close.
Step 2 provides 4 material of polymer of liquid.Specifically, 4 material of polymer can be under certain external condition
Curing molding.In present embodiment, the polymer 4 is performed polymer and crosslinking agent proportion is 9:1 or the PDMS of 10:1, colourless
It is bright, heating curable.
Step 3 provides the smooth container of inner surface 3, and one layer is poured into the container 3 in advance using cup 10
Determine the polymer 4 of thickness, PDMS thickness can be depending on subsequent technique: a) even selecting first to pour into one layer of PDMS, to 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 layers of PDMS thickness
It is 3 millimeters or so；If b) selection pours into after one layer of PDMS level and places nested needle tubing on its surface, to nested needle tubing voluntarily under
It is immersed to the mode being packaged in PDMS, then PDMS is with a thickness of 6 millimeters or so.
Step 4 provides the external condition for making 4 curing molding of polymer, such as heats, adds 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 heat source, temperature
Degree is 75 degrees Celsius, heating time 10 minutes.
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 production away
As outer fluid passage 6, the interior inner needle tube 1 is internal layer fluid channel 7 in raw space.In present embodiment, the internal layer
200 microns of 7 diameter of fluid channel, described 400 microns of 6 internal diameter of outer fluid passage, 800 microns of outer diameter.
Step 6, perpendicular to the polymer 4 and needle tubing assembly surface punching connection assembly surface and outer tunnel, institute
Hole is stated as outer tunnel entrance 8.It in present embodiment, is punched using 1040 microns of outer diameter of dispensing needle heads, the hole is straight
1040 microns of diameter.
Coaxial nozzle production method provided by the invention, by 4 material of polymer with hard needle tubing group by way of casting
It closes, forms 4 material solidification of liquid polymer, make outer tunnel with the technique of similar demoulding, high-precision may be implemented
The alignment of internal and external channel center, and the good flexible polymer 4 of translucency can be used to realize to Coaxial nozzle interior flow field simultaneously
Visualizing monitor, production is simple time saving, and at low cost, efficiency is higher.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (5)
1. a kind of Coaxial nozzle production method, which comprises 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 made to expose to outer needle tubing, then the inner needle tube and
Nested needle tubing assembly is collectively formed in outer needle tubing, wherein the outside diameter d of the inner needle tube1With the internal diameter d of outer needle tubing2Relationship be 0
≤d2-d1≤ 30 microns；
2) liquid, curable polymer is poured into container, the nested needle tubing assembly for then obtaining step 1) is horizontal
It is put into the polymer, so that the nesting 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 spray head green body is collectively formed with nested needle tubing assembly in polymer；
4) the spray head green body is taken out out of container, cuts the spray head green body along cutting planes with from the spray head green body
The outer needle tubing of middle taking-up then will wherein the cutting planes are the plane where one end that the outer needle tubing is not arranged with inner needle tube
The outer needle tubing takes outer fluid passage of the generated space as Coaxial nozzle away, and the inner cavity of the inner needle tube is as coaxial
The internal layer fluid channel of spray head；
5) it punches on polymer using the outer tunnel entrance as Coaxial nozzle, the outer tunnel entrance and the Coaxial nozzle
Outer fluid passage connection.
2. a kind of Coaxial nozzle production method according to claim 1, which is characterized in that the polymer is PDMS, and
And performed polymer and crosslinking agent proportion are 9:1 or 10:1 in PDMS.
3. a kind of Coaxial nozzle production method according to claim 1, which is characterized in that the container is culture dish.
4. a kind of Coaxial nozzle production method according to claim 1, which is characterized in that pass through heating or light in step 3)
According to making the polymer curing molding.
5. a kind of Coaxial nozzle production method according to claim 1, which is characterized in that the internal diameter of the inner needle tube is
200 microns and its outer diameter are 400 microns, and the internal diameter of the outer needle tubing is 400~430 microns and its outer 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 |
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| Publication Number | Publication Date |
|---|---|
| CN106891463A CN106891463A (en) | 2017-06-27 |
| CN106891463B true CN106891463B (en) | 2018-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710120706.5A Active CN106891463B (en) | 2017-03-02 | 2017-03-02 | A kind of Coaxial nozzle production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6169417A (en) * | 1984-09-13 | 1986-04-10 | Sapporo Sanki Kk | Manufacture of heat insulating tube |
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2017
- 2017-03-02 CN CN201710120706.5A patent/CN106891463B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN106891463A (en) | 2017-06-27 |
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