CN102205602B - Injection mould for polymeric micro-fluidic chip with integrated substrate and cover glass - Google Patents
Injection mould for polymeric micro-fluidic chip with integrated substrate and cover glass Download PDFInfo
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- CN102205602B CN102205602B CN 201110072477 CN201110072477A CN102205602B CN 102205602 B CN102205602 B CN 102205602B CN 201110072477 CN201110072477 CN 201110072477 CN 201110072477 A CN201110072477 A CN 201110072477A CN 102205602 B CN102205602 B CN 102205602B
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Abstract
Relating to the technical field of injection moulds, the invention provides an injection mould for molding a polymeric micro-fluidic chip with a micro-channel structure and hole-like liquid storage tanks on the surface. The injection mould comprises a mould holder and a cavity insert. The mould holder is a three-plate injection mould holder. With a material pushing plate between a fixed clamp plate and a fixed mould plate removed, the relative movement between the fixed clamp plate and the fixed mould plate is still maintained, so that a core pulling action of the fixed mould can be realized. To guarantee the integrality of the hole-like liquid storage tanks, a mould core for molding the hole-like liquid storage tanks is fixed on the fixed clamp plate and inserted into a movable mould insert through a fixed mould insert. While opening the mould, a locking mechanism between the fixed mould and the movable mould is employed to get the mould core to withdraw from the cavity before parting of the fixed mould and the movable mould. With the injection mould of the invention, efficient mass production of the micro-fluidic chips with a micro-channel structure and hole-like liquid storage tanks on the surface can be realized. The workload brought by liquid storage tank processing in subsequent chip bonding is reduced, and the dimensional consistency and positional accuracy of the liquid storage tanks are guaranteed.
Description
Technical field
The invention belongs to the injection forming mold technical field, specially refer to and a kind ofly can molded surface have MCA and have the polymeric micro-fluidic chip injection forming mold of circular hole liquid storage tank.
Background technology
Micro-fluidic chip is that the basic operation units such as sample preparation related in the fields such as biological and chemical, reaction, separation, detection are integrated on the less chip of size, under compression pump or electric field action, form microfluidic circuit, reach the purpose to the rapid analysis of sample high flux, begun at present in the more and more important effect of the fields such as analytical chemistry, life science and biomedical articles performance.
The material that is used for the moulding micro-fluidic chip has silicon, glass, quartz and polymer etc.Polymeric micro-fluidic chip generally is comprised of substrate and cover plate two parts, and the moulding microchannel processes liquid storage tank at cover plate on substrate, and the two is formed as one a complete micro-fluidic chip by being bonded to of later stage.Circular hole liquid storage tank on the cover plate needs recycling machinery or laser means processing after moulding traditionally, waste time and energy, and crudy and dimensional uniformity is difficult to guarantee.If can with the circular hole liquid storage tank when the injection moulding and the microchannel finish in the lump moulding, then will greatly improve the production efficiency of plastic microfluidic chip, thereby reduce the cost of manufacture of micro-fluidic chip, promote laying the foundation for the micro-fluidic chip commercialization.
Summary of the invention
The object of the present invention is to provide a kind of polymeric micro-fluidic chip injection forming mold, be used for the micro-fluidic chip that molded surface has MCA and has the circular hole liquid storage tank.Utilize this mould can make circular hole liquid storage tank together moulding when injection moulding on the on-chip microchannel of micro-fluidic chip and the cover plate, thereby can realize the chip of high efficiency, compact dimensions in enormous quantities, the accurate homogeneous of shape, promote the development of microsystems technology.
Technical scheme of the present invention is as follows:
A kind of polymeric micro-fluidic chip substrate and cover plate integrated injection molding mould comprise two parts of mould mould bases and cavity block.Wherein the mould mould bases uses three plate injection mold tool mould bases, removes the scraping wings between top clamping plate and solid plate, still keeps the relative motion between top clamping plate and solid plate, to realize the cover half action of loosing core.About fixed die insert is divided into two, a microfabrication that is used for fixed-type chip microchannel is inserted, and another is used for inserting of fixed-type circular hole liquid storage tank, and the core of moulding circular hole liquid storage tank passes from it.Mold cavity is inserted, and part is inserted by fixed die insert, moving die insert, microfabrication and the circular hole liquid storage tank is inserted forms.The moving die insert cavity structure is designed to rectangular through slot, and shape is identical with the chip apparent size, and a side moving die insert and cover half microfabrication are inserted and be combined substrate for the moulding micro-fluidic chip; One side moving die insert and cover half circular hole liquid storage tank are inserted and are combined cover plate for the moulding micro-fluidic chip.
For guaranteeing the integrality of circular hole liquid storage tank, the core of moulding circular hole liquid storage tank is fixed on the top clamping plate, inserts in the moving die insert by fixed die insert.During die sinking, utilize the retaining mechanism between fixed, dynamic model, force this core before fixed, dynamic model somatotype, from die cavity, extract out in advance.
Effect of the present invention and benefit are: adopt this injection forming mold high efficiency to produce the micro-fluidic chip that the surface has MCA and has the circular hole liquid storage tank in enormous quantities, the workload of processing liquid storage tank when having reduced follow-up chip bonding, and guaranteed the uniformity of liquid storage tank size and the accuracy of position.Adopt the cover half core-pulling mechanism of going ahead of the rest, the deformed damaged at liquid storage tank place has improved yield rate when having avoided the chip demoulding.The present invention efficiently solves the technical barrier of liquid storage tank moulding in the microfluidic control chip injection molding process, will further improve manufacture level and the production efficiency of micro-fluidic chip, promotes injection molding technology in the application in micro mechanical system field.
Description of drawings
Fig. 1 is microfluidic control chip injection molding die assembling schematic diagram of the present invention.
Fig. 2 a is chip, cast gate and runner schematic diagram front view.
Fig. 2 b is chip, cast gate and runner schematic diagram top view.
Among the figure: 1 top clamping plate; The core of 2 moulding circular hole liquid storage tanks; 3 solid plates; 4 fixed die inserts; 5 moving die inserts; 6 moving platens; 7 push rods; 8 nylon jacket locked mode assemblies; 9 limiting gasket; 10 guide pillars.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Injection forming mold of the present invention is used for the moulding diagram with the micro-fluidic chip of liquid storage tank.The microchannel cross sectional shape is that 50 μ m are dark, the wide rectangle of 80 μ m, and the diameter of liquid storage tank is 2mm.
As shown in Figure 1, injection forming mold one mould of the present invention two chambeies comprise two parts of mould mould bases and cavity block.Wherein the mould mould bases uses three plate injection mold tool mould bases, removes the scraping wings of 3 of top clamping plate 1 and solid plates, and solid plate 3 still can slide along guide pillar 10.The core 2 of moulding circular hole liquid storage tank is fixed on the top clamping plate 1, passes from fixed die insert 4 and moving die insert 5, thereby forms circular hole at chip.Nylon jacket locked mode assembly 8 is installed on solid plate 3 and the moving platen 6.
During injection moulding, plastic melt at first enters runner on the moving platen 6 by sprue, and early stage, the fountain type fluid at first entered the two ends, road of crossing current shown in Fig. 2 b, and follow-up fluid enters and be full of the die cavity of moulding substrate and cover plate reposefully by streamlined fan gate.Through the pressurize cooling, during die sinking, solid plate 3 at first separates with top clamping plate 1, and the core 2 of moulding circular hole liquid storage tank is extracted out from moving die insert 5, until solid plate 3 is met limiting gasket 9, stops to move ahead.Continue die sinking, the expanding force that the mould opening force of injection machine overcomes nylon jacket in the nylon jacket locked mode assembly 8 separates solid plate 3 and moving platen 6, finishes die sinking.Release substrate and the cover plate that obtains micro-fluidic chip by push rod 7.According to actual conditions, whole injection moulding process needs about 1min.
Claims (1)
1. a polymeric micro-fluidic chip substrate and cover plate integrated injection molding mould comprise two parts of mould mould bases and cavity block; It is characterized in that: the mould mould bases uses three plate injection mold tool mould bases, removes the scraping wings between top clamping plate (1) and solid plate (3), keeps the relative motion between top clamping plate (1) and solid plate (3); About fixed die insert is divided into two, a microfabrication that is used for fixed-type chip microchannel is inserted, and another is used for inserting of fixed-type circular hole liquid storage tank, and the core of moulding circular hole liquid storage tank passes from it; Mold cavity is inserted, and part is inserted by fixed die insert, moving die insert, microfabrication and the circular hole liquid storage tank is inserted forms; The moving die insert cavity structure is designed to rectangular through slot, and shape is identical with the chip apparent size, and a side moving die insert and microfabrication are inserted and be combined substrate for the moulding micro-fluidic chip; One side moving die insert and circular hole liquid storage tank are inserted and are combined cover plate for the moulding micro-fluidic chip; The core (2) of moulding circular hole liquid storage tank is fixed on the top clamping plate (1), inserts in the moving die insert (5) by fixed die insert (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072477 CN102205602B (en) | 2011-03-24 | 2011-03-24 | Injection mould for polymeric micro-fluidic chip with integrated substrate and cover glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110072477 CN102205602B (en) | 2011-03-24 | 2011-03-24 | Injection mould for polymeric micro-fluidic chip with integrated substrate and cover glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102205602A CN102205602A (en) | 2011-10-05 |
| CN102205602B true CN102205602B (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110072477 Expired - Fee Related CN102205602B (en) | 2011-03-24 | 2011-03-24 | Injection mould for polymeric micro-fluidic chip with integrated substrate and cover glass |
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| CN (1) | CN102205602B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213251B (en) * | 2013-04-15 | 2015-04-08 | 大连理工大学 | Injection mold of medical intervention catheter adapter |
| CN109926112A (en) * | 2019-04-10 | 2019-06-25 | 中南大学 | The layered manufacturing method of three-dimensional microstructures polymeric micro-fluidic chip |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550156Y (en) * | 2002-07-18 | 2003-05-14 | 中国科学院大连化学物理研究所 | Micro flow control plastic chip injection mould |
| CN101659105A (en) * | 2009-10-01 | 2010-03-03 | 大连理工大学 | Microfluidic control chip injection molding die |
| CN101786317A (en) * | 2010-01-18 | 2010-07-28 | 大连理工大学 | Hot runner injection forming mold for micro-fluidic chip |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10202697A (en) * | 1997-01-22 | 1998-08-04 | Sekisui Chem Co Ltd | Injection mold |
| JP2001277306A (en) * | 2000-04-03 | 2001-10-09 | Apic Yamada Corp | Die for molding resin |
| US7708550B2 (en) * | 2004-06-29 | 2010-05-04 | Konica Minolta Opto, Inc. | Cold runner injection mold having an insulated gate |
-
2011
- 2011-03-24 CN CN 201110072477 patent/CN102205602B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550156Y (en) * | 2002-07-18 | 2003-05-14 | 中国科学院大连化学物理研究所 | Micro flow control plastic chip injection mould |
| CN101659105A (en) * | 2009-10-01 | 2010-03-03 | 大连理工大学 | Microfluidic control chip injection molding die |
| CN101786317A (en) * | 2010-01-18 | 2010-07-28 | 大连理工大学 | Hot runner injection forming mold for micro-fluidic chip |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-277306A 2001.10.09 |
| JP特开平10-202697A 1998.08.04 |
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| CN102205602A (en) | 2011-10-05 |
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Granted publication date: 20130227 |