CN103290492B - The preparation method of a kind of micro-footpath silk or pipe and device - Google Patents
The preparation method of a kind of micro-footpath silk or pipe and device Download PDFInfo
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- CN103290492B CN103290492B CN201310214980.0A CN201310214980A CN103290492B CN 103290492 B CN103290492 B CN 103290492B CN 201310214980 A CN201310214980 A CN 201310214980A CN 103290492 B CN103290492 B CN 103290492B
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Abstract
The invention discloses the preparation facilities of a kind of micro-footpath silk or pipe, comprising: solution container, for providing the material solution of preparation micro-footpath silk or pipe; Flow distributor, be provided with multiple nozzles of arranged in arrays, solution is sprayed by nozzle; Solidification equipment, it is fixed on below nozzle by base plate, for the silk that solidify to form or pipe; Base plate is connected by high pressure generator with nozzle, forms high voltage electric field between the two; Tube core mould is also comprised in this device, it has the multiple tube cores in arranged in arrays, each tube core one_to_one corresponding respectively engagement sleeves is contained in nozzle, thus the space of material solution is held in the formation between each nozzle and tube core, under the effect of electric field, after solution carries out assignment of traffic by this space in this nozzle, ejection forms jet, can form micro-footpath silk or pipe after being solidified by solidification equipment.By the present invention, the micro-footpath silk or pipe that possess micron order diameter can be generated, solve the defect that prior art cost of manufacture is high, specification is single, parameter is comparatively difficult to ensure card.
Description
Technical field
The invention belongs to micro-manufacture field, more specifically, relate to a kind of manufacturing installation and the method for micro-footpath silk or pipe.
Background technology
In recent years, due to the fast development in the field such as Aero-Space, national defense and military, more and more higher requirement is had to Precision Machining manufacture, in addition, due to successful Application and the popularization of microrobot, miniature performance element in medical domain, there is larger demand for more microminiaturized, low cost, the micro-diameter pipe of high yield quantification, microelectrode.
Micro-footpath silk or pipe refer to have micron order diameter, the silk of slenderness ratio high (being greater than 10) or pipe, because micro-footpath silk or pipe are for special performance, as electrophoresis, be similar to people's capillaries mechanism and the performance such as high ductibility, miniature property, thus have a wide range of applications in fields such as information, the energy, medical treatment, national defence.Such as, in medical science, minisize capillary pipe is inserted in animal body and carry out analyzing in real time, continuously in body, directly obtain chemical action message in body, in life science, obtain important application.
Micro-footpath silk also can be used as microelectrode and uses, and microelectrode generally includes two kinds of connotations: (1) refers to that the diameter dimension of electrode is microminiaturized, as microminiaturized ISE.(2) refer to that in electrochemical analysis electrode area is very little but the class electrode that whole electrode is not microminiaturized, as the indicator electrode etc. in polarography and voltammetry.Because the electrode surface of microelectrode is very little, its electrochemical properties has the unexistent particular advantages of many conventional electrodes, such as, be used as the ignition voltage of spark machined in Precision Machining.
At present, micro-footpath silk or the pipe of glass fiber material are generally utilize alcohol blast burner to elongate under the effect of mould to after heating conduit, micro-footpath silk of metal material or pipe are generally use multistage mould to carry out descending drawing or compressing, front kind of method to the internal diameter of micro-footpath silk or pipe and wall thickness control more difficult, general is all judge with subjective sensation, product parameters is difficult to standardization, and efficiency is very low; Although the product parameters that then a kind of method is prepared is comparatively accurate, the preparation expense of mould is too high, and requires that metal material possesses good ductility and tensility, otherwise there will be " fracture of wire ".That these two kinds of methods are commonly used to prepare diameter comparatively large (more than grade), that specification is more single silk and pipe, for meticulousr micro-footpath silk and pipe (diameter ten microns) then helpless.
Chinese patent literature 201210010675.5 discloses a kind of apparatus and method preparing array patterns based on static spray printing, it utilizes the principle of electrostatic spinning spray printing to carry out pattern preparation, but the program is only for the preparation of pattern, be not suitable for the preparation of micron-sized silk or pipe, and the program is only rely on flow pump to control to the jet that nozzle sprays, accurately cannot control flow velocity and the flow of spray printing jet, the pattern prepared cannot be uniformly distributed, affect the electric property of device.Particularly, due to cannot fine adjustment and control jet, make to regulate the spinning inner wall structure of fluidic vectoring thrust, the occasion of multiple difference structure spun structure of cannot satisfying the demand.
Summary of the invention
For the defect of existing process for machining and manufacturing and the demand of improvement, the invention provides preparation method and the device of a kind of micro-footpath silk or pipe, its object is to by the principle in conjunction with electrostatic spinning and spray printing, solution is sprayed under the effect of high voltage electric field, after solidification equipment solidification, form silk or the pipe of micron order diameter, thus solve that existing method cost of manufacture is high, specification is single, parameter is comparatively difficult to ensure card and cannot prepare the defect of micron order diameter wire or pipe.
According to one aspect of the present invention, provide the preparation facilities of a kind of micro-footpath silk or micro-diameter pipe, it utilizes electrofluid spray printing to prepare micro-footpath silk or micro-diameter pipe, it is characterized in that, this device specifically comprises:
Solution container, for providing the material solution of preparation micro-footpath silk or micro-diameter pipe;
Flow distributor is provided with multiple nozzles of arranged in arrays, and it is communicated with described solution container, and solution is sprayed by described nozzle;
Solidification equipment, it is fixed on below nozzle by a base plate, and this base plate is connected by high pressure generator with described nozzle, makes to form high voltage electric field between;
It is characterized in that, tube core mould is also comprised in this device, it has the multiple tube cores in arranged in arrays, described each tube core one_to_one corresponding coordinates insertion to be sleeved in each nozzle respectively, thus in space between each nozzle and tube core, form the space holding material solution, under the effect of described electric field, after material solution carries out assignment of traffic by this space in this nozzle, ejection forms jet, after the solidification of this solidification equipment, micro-footpath silk or micro-diameter pipe can be formed.
As present invention further optimization, described each tube core overlaps with corresponding nozzle centre axis or does not overlap, both relative positions are diametrically adjustable, thus can change the space between each tube core and corresponding nozzle, realize the adjustment of spray silk speed from nozzle ejection and flow.
As present invention further optimization, described tube core is solid hopkinson bar or hollow pipe, its end being positioned at nozzle vent end is pointed or fillet, and tube core is axially adjustable in nozzle, make tube core end and nozzle vent end relative position variable, thus form the jet of different structure, obtain different micro-footpath silks or micro-diameter pipe.
As present invention further optimization, described tube core protrudes from outside corresponding nozzle vent or is positioned at spout.
As present invention further optimization, described tube core is hollow pipe, can pass into gas or inject another kind of material solution and nozzle by correspondence sprays in its body, thus forms micro-footpath silk that micro-diameter pipe or formation is made of a variety of materials.
As present invention further optimization, this device also comprises the vibration machine be connected with solidification equipment, and it vibrates in a certain direction for driving described solidification equipment, forms micro-footpath silk or micro-diameter pipe to break spray silk.
Be filled with the solution that can polarize under electric field action in described solution container of the present invention, under the effect of flow pump, solution be delivered to flow distributor; Described flow distributor is configured with the nozzle of arranged in arrays, is mainly used in regulating and distributing the liquid inventory to each nozzle, guarantee the liquid inventory that each nozzle sprays and pressure identical, to guarantee micro-footpath silk of preparing or the performance of pipe, dimensional parameters stablizes.
Described tube core mould of the present invention is placed in flow distributor in use, it is configured with the tube core identical with position distribution with arranged in arrays nozzle quantity on flow distributor, need ensure that each tube core is concentric with corresponding nozzle during initial installation, tube core is used for solution water conservancy diversion, auxiliary formation spinning.Tube core mould is configured with three cover micro motors, for regulating center offset and the insertion depth of the relative corresponding nozzle of tube core, and the fine motion object of tube core under meeting special process requirement.
Solidification equipment of the present invention is positioned at the below of flow distributor, as required can built-in consolidation liquid, for the jet rapid solidification will sprayed from nozzle.The degree of depth of described solidification equipment inner pressurd vessel can adjust according to the length requirement of micro-footpath silk of required preparation or pipe.Described solidification equipment inside is configured with automatic collecting device for the micro-footpath silk after shaping or pipe being collected.
Vibration machine of the present invention is connected with solidification equipment, when the micro-footpath silk solidified in solidification equipment or pipe reach appropriate length, vibration machine drives solidification equipment to produce fast reciprocating vibration, utilize the viscous force of consolidation liquid micro-footpath silk or pipe to be broken, and automatic collecting device can be assisted to carry out collection finished product.
One of positive and negative electrode of high pressure generator of the present invention is connected with flow distributor, and another electrode is connected with base plate, between arranged in arrays nozzle and base plate, form high voltage electric field, solution is departed from and forms jet at its own face tension force of nozzle end.
In the present invention, the vertical range between flow distributor top nozzle and base plate can set according to micro-footpath silk of required preparation or pipe technological parameter, and the height of corresponding solidification equipment also should change thereupon.
In the present invention, the voltage that high pressure generator applies between flow distributor top nozzle and base plate can set according to micro-footpath silk of required preparation or pipe technological parameter, and the electric field that applied voltage is formed can destroy the surface tension of solution self.
In the present invention, when preparing hollow pipe, in tube core mould tube core, gas can be passed into, and the micro-diameter pipe technological parameter that gas atmosphere should be prepared as requested sets.
In the present invention, the internal diameter of flow distributor top nozzle should set according to micro-footpath silk of required preparation or pipe technological parameter, and tube core mould and flow distributor support the use, tube core diameter also corresponding change when the internal diameter of corresponding nozzle changes.
According to another aspect of the present invention, provide a kind of micro-footpath silk or micro-diameter pipe, it utilizes prepared by above-mentioned preparation facilities.
According to another aspect of the invention, provide a kind of method that preparation facilities applying above-mentioned micro-footpath silk or micro-diameter pipe prepares micro-footpath silk or micro-diameter pipe, it comprises:
Solution in solution container is delivered to each nozzle, under the effect of electric field, solution carries out forming jet from nozzle ejection after assignment of traffic through above-mentioned tube core mould, the solidification equipment of this jet below nozzle is solidified by it, after micro-footpath silk after hardening or micro-diameter pipe arrive appropriate length, drive solidification equipment to produce vibration by vibration machine, utilize the viscous force of consolidation liquid in solidification equipment to break, micro-footpath silk or micro-diameter pipe can be formed.
In the present invention, in whole preparation process, by regulating vibration machine along the vibration frequency of certain orientation and amplitude, break shaping after micro-footpath silk or pipe, the numerical value of vibration frequency and amplitude can set as required.
In general, the above technical scheme conceived according to the present invention compared with prior art, the present invention adopts the principle of electrostatic spinning, under the effect of electric field, make solution depart from surface tension form jet, jet, through being solidified to form silk or the pipe of micron order diameter, mainly possesses following technological merit:
1, the principle of electrostatic spinning is adopted, by adjusting some key process parameters in preparation technology such as voltage of electric field value, vibration velocity and vibration frequency etc., micro-footpath silk or tubing products that shape and slenderness ratio etc. meet user demand can be obtained, improve the applicable surface of product;
2, synchronization makes multiple nozzle work by flow distributor simultaneously, and production efficiency is high, and makes the performance parameter of micro-footpath silk or tubing products more stable;
3, comparatively simple according to preparation method's integrated artistic flow process of the present invention, automaticity is higher, decrease artificial participation, the preparation method that this preparation method is more traditional simultaneously has higher flexibility, can rapid adjustment when the performance parameter of product changes, response is fast, safeguard and upgrade cost lower, in addition, the diverse product of performance can be obtained by changing dissimilar tube core mould.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram according to micro-footpath silk of the present invention or pipe manufacturing apparatus;
Fig. 2 is the assembling schematic diagram (not coordinating completely) of flow distributor and tube core mould;
Fig. 3 is the detailed construction schematic diagram according to tube core mould of the present invention;
Fig. 4 installs and operating diagram according to tube core of the present invention and nozzle;
Fig. 4 a is the structural representation according to the more solid heart silk of production diameter of the present invention;
Fig. 4 b is the structural representation according to the thinner solid silk of production diameter of the present invention;
Fig. 4 c is the structural representation according to production hollow pipe of the present invention;
Fig. 4 d is the structural representation according to microelectrode heterogeneous inside and outside production of the present invention;
Fig. 5 a is the schematic shapes of the hollow pipe can prepared according to the present invention;
The schematic shapes of heterogeneous solid silk inside and outside Fig. 5 b can be prepared according to the present invention;
Fig. 5 c is the schematic shapes that the hollow arbor braid can prepared according to the present invention bores sharp pipe;
Fig. 5 d is the schematic shapes according to the solid silk obtained by the present invention.
In all of the figs, identical Reference numeral is used for representing similar elements or structure, wherein:
1-solution container 2-flow pump 3-flow distributor 4-high pressure generator 5-tube core mould 6-solidification equipment 7-vibration machine 8-base plate
The micro motor in the micro motor 505-tube core mould z direction in the micro motor 502-tube core 503-tube core mould miniature linear transmission mechanism 504-tube core mould y direction in 501-tube core mould x direction
101-nozzle 102-solid tube core 103-solution I 104-gas 105-hollow tube core 106-solution II.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Only in order to explain the present invention when relating to instantiation if illustrate herein, do not limit the present invention.
As shown in Figure 1, the preparation facilities of the present embodiment comprises solution container 1, flow pump 2, flow distributor 3, high pressure generator 4, tube core mould 5, solidification equipment 6, vibration machine 7 and base plate 8.
Solution container 1 is communicated with flow distributor 3 by flow pump 2, is filled with the solution 103 for the preparation of micro-footpath silk or pipe that can be polarized by high voltage electric field in solution container 1.Under the effect of flow pump 2, solution 103 is pushed to flow distributor 3 by precision.Flow distributor 3 is configured with the nozzle 101 of arranged in arrays.
Tube core mould 5 is sleeved in flow distributor 3, and particularly, tube core mould 5 has the multiple tube cores 102 or 105 in arranged in arrays that corresponding nozzle is arranged, and each tube core respectively corresponding grafting is sleeved in each nozzle 101.There is space between the nozzle 101 of each tube core and correspondence, circulate for solution.
Tube core and corresponding nozzle 101 can coaxially be installed, also can disalignment, and to there is space between the nozzle 101 of tube core and correspondence can be symmetrical annular also can be asymmetric annular or other structures.The height of tube core mould in flow distributor nozzles and radial disbalance position adjustable.
According to technological requirement, tube core can be solid tubes or hollow pipe, namely can insert solid tube core 102 or hollow tube core 105 in nozzle 101, and gas 104 can be passed in hollow tube core 105 or be different from the solution 106 (solution II) of solution 103 (solution I).As shown in Figure 4, tube core is positioned at the end, one end of nozzle vent end is pointed or fillet or for other shapes.
Solidification equipment 6 is positioned at the below of nozzle 101, solidification equipment 6 is connected with the vibration machine 7 of below simultaneously, drive solidification equipment 6, along x2 and y2 direction, fast reciprocating vibration occurs by vibration machine 7, goods after utilizing the viscous force effect of consolidation liquid in solidification equipment 6 to make forming are pulled off, and are configured with the device collecting micro-footpath silk or pipe in solidification equipment 6.
One of electrode of high pressure generator 4 is connected with flow distributor 3, and another pole is connected with base plate 8, makes to form high-tension electricity difference between nozzle 101 and base plate 8, makes the solution after polarization spray from nozzle 101 to base plate 8 direction under electric field action thus.Jet in the process through solidification equipment 6, will by rapid solidification thus formed required for micro-footpath silk or pipe.
As shown in Figure 3, tube core mould 5 has x direction micro motor 501, tube core 502, miniature linear transmission mechanism 503, y direction micro motor 504, z direction micro motor 505, the tube core 502 of arranged in arrays can along x, y, z three directions rectilinear movements under the effect of three cover micro motors and linear transmission mechanism.
According to micro-footpath silk of the embodiment of the present invention or the preparation method of pipe, idiographic flow is as follows:
First micro motor is utilized to adjust tube core mould 5 x in flow distributor 3
1, y
1and z
1the position in three directions, can require the offset of tube core 102 relative to flow distributor 3 top nozzle 101 of Correctional tube core 5 simultaneously according to the technological parameter of product;
Open and adjust the output voltage of high pressure generator 4, start flow pump 2, the solution in solution container 1 is delivered to flow distributor 3, and under the effect of electric field, solution is pulled out by from nozzle tip, and sprays towards the direction of base plate 8;
In solidification equipment 6 consolidation liquid effect under, the solution of ejection by rapid solidification, after micro-footpath silk when cured or pipe arrive appropriate length, can suspend flow pump 2 and work, and Vibration on Start-up generator 7, drives solidification equipment 6 to produce x
2and y
2the faster reciprocal motion in direction, utilizes the viscous force of consolidation liquid to break micro-footpath silk or pipe.
After, stop vibration machine 7, restart flow pump 2, start jet, so constantly move in circles.In the process of preparation, use different tube core moulds and change the position of tube core mould in flow distributor and will obtain difference micro-footpath silk as shown in Figure 4 or pipe.
The present invention adopts the principle of electrostatic spinning, and under the effect of electric field, make solution depart from surface tension form jet, jet is through being solidified to form silk or the pipe of micron order diameter.Solution in solution container of the present invention is transported to flow distributor by flow pump.Flow pump is by the pressure of liquid in the Flow-rate adjustment flow distributor of control conveying.High pressure generator is for producing high voltage electric field between the nozzle and base plate of the arranged in arrays on flow distributor, and one of its positive and negative electrode is connected with the nozzle of arranged in arrays, and another electrode is connected with base plate.Flow distributor is used for the liquid inventory of each nozzle of uniform distribution, makes the dimensional parameters of micro-footpath silk or the pipe formed from each nozzle identical.Tube core mould is used for water conservancy diversion and auxiliary formation spinning, and the nozzle and the tube core mould that support the use the arranged in arrays of different size can obtain different micro-footpath silks or pipe product.Solidification equipment is used for will micro-footpath silk of spraying from nozzle or pipe rapid solidification.Vibration machine acts on solidification equipment, the double vibrations of main generation both direction thus utilize the viscous force of consolidation liquid in solidification equipment the micro-footpath silk after solidification or pipe to be broken from nozzle, then utilizes the automatic collecting device in solidification equipment to collect micro-footpath silk or pipe.
If more than illustrate and relate to concrete example, only in order to explain the present invention, do not limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a preparation facilities for micro-footpath silk or micro-diameter pipe, it utilizes electrofluid spray printing to prepare micro-footpath silk or micro-diameter pipe, it is characterized in that, this device specifically comprises:
Solution container (1), for providing the material solution of preparation micro-footpath silk or micro-diameter pipe;
Flow distributor (3), be provided with multiple nozzles (101) of arranged in arrays, it is communicated with described solution container (1), and solution is by described nozzle (101) ejection;
Solidification equipment (6), it is fixed on nozzle (101) below by a base plate (8), this base plate (8) is connected by high pressure generator (4) with described nozzle (101), makes to form high voltage electric field between;
It is characterized in that, tube core mould (5) is also comprised in this device, it has the multiple tube cores (102 in arranged in arrays, 105), described each tube core (102, 105) one_to_one corresponding coordinates insertion to be sleeved in each nozzle (101) respectively, thus at each nozzle (101) and tube core (102, 105) space holding material solution is formed in the space between, under the effect of electric field, after material solution carries out assignment of traffic by this space in this nozzle (101), ejection forms jet, after this solidification equipment (6) solidification, micro-footpath silk or micro-diameter pipe can be formed, and
The vibration machine (7) be connected with described solidification equipment (6), it vibrates in a certain direction for driving described solidification equipment (6), forms micro-footpath silk or micro-diameter pipe to break spray silk.
2. the preparation facilities of a kind of micro-footpath silk according to claim 1 or micro-diameter pipe, it is characterized in that, described each tube core (102,105) is with corresponding nozzle (101) central axes or do not overlap, both relative positions are diametrically adjustable, thus the space that can change between each tube core (102,105) and corresponding nozzle (101), realize the adjustment of spray silk speed and the flow sprayed from nozzle (101).
3. the preparation facilities of a kind of micro-footpath silk according to claim 1 and 2 or micro-diameter pipe, it is characterized in that, described tube core is solid hopkinson bar (102) or hollow pipe (105), its end being positioned at nozzle (101) spout end is pointed or fillet, and tube core (102,105) is axially adjustable in nozzle, make tube core (102,105) end and nozzle (101) spout end relative position variable, thus form the jet of different structure, obtain different micro-footpath silks or micro-diameter pipe.
4. the preparation facilities of a kind of micro-footpath silk according to claim 3 or micro-diameter pipe, is characterized in that, described tube core (102,105) protrudes from outside corresponding nozzle (101) spout or is positioned at spout.
5. the preparation facilities of a kind of micro-footpath silk according to claim 3 or micro-diameter pipe, it is characterized in that, described tube core (102,105) is hollow pipe, gas can be passed in its body or inject another kind of material solution and nozzle (101) by correspondence sprays, thus form micro-footpath silk that micro-diameter pipe or formation is made of a variety of materials.
6. the preparation facilities of a kind of micro-footpath silk according to claim 4 or micro-diameter pipe, it is characterized in that, described tube core (102,105) is hollow pipe, gas can be passed in its body or inject another kind of material solution and nozzle (101) by correspondence sprays, thus form micro-footpath silk that micro-diameter pipe or formation is made of a variety of materials.
7. micro-footpath silk or a micro-diameter pipe, it utilizes prepared by the preparation facilities according to any one of the claims 1-6.
8. application rights requires that the preparation facilities of the micro-footpath silk according to any one of 1-6 or micro-diameter pipe prepares a method for micro-footpath silk or micro-diameter pipe, and it comprises:
Solution in solution container (1) is delivered to each nozzle, under the effect of electric field, solution carries out forming jet from nozzle ejection after assignment of traffic through above-mentioned tube core mould (5), the solidification equipment of this jet below nozzle (6) is by its solidification, after micro-footpath silk after hardening or micro-diameter pipe arrive appropriate length, solidification equipment (6) is driven to produce vibration by vibration machine (7), utilize the viscous force of consolidation liquid in solidification equipment (6) to break, micro-footpath silk or micro-diameter pipe can be formed.
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| CN103993371B (en) * | 2014-06-16 | 2016-03-02 | 厦门大学 | A kind of opening and closing induction type batch electric spinning equipment |
| CN104975310B (en) * | 2015-06-12 | 2017-09-22 | 中国科学院宁波材料技术与工程研究所 | A kind of processing method of nozzle and nozzle mold and nozzle and nozzle mold |
| JP6767332B2 (en) * | 2017-09-26 | 2020-10-14 | 株式会社東芝 | Electric field spinning equipment |
| CN108034995B (en) * | 2018-01-12 | 2023-09-26 | 华南协同创新研究院 | Solid needle electrostatic spinning equipment |
| CN109571955A (en) * | 2018-11-21 | 2019-04-05 | 广东工业大学 | A kind of novel 3D printing empty micropin nozzle arrangements |
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