CN106738641A - A kind of new microfluidic chip mould and method - Google Patents

A kind of new microfluidic chip mould and method Download PDF

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Publication number
CN106738641A
CN106738641A CN201611099080.6A CN201611099080A CN106738641A CN 106738641 A CN106738641 A CN 106738641A CN 201611099080 A CN201611099080 A CN 201611099080A CN 106738641 A CN106738641 A CN 106738641A
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CN
China
Prior art keywords
guide pillar
push rod
core rod
cylinder
matched moulds
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611099080.6A
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Chinese (zh)
Inventor
康维嘉
贺建芸
谢鹏程
刘振文
罗锡丹
张景慧
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Beijing University of Chemical Technology
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Beijing University of Chemical Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Chemical Technology filed Critical Beijing University of Chemical Technology
Priority to CN201611099080.6A priority Critical patent/CN106738641A/en
Publication of CN106738641A publication Critical patent/CN106738641A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/2602Mould construction elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/56Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/40Removing or ejecting moulded articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/72Heating or cooling
    • B29C45/73Heating or cooling of the mould
    • B29C45/7331Heat transfer elements, e.g. heat pipes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The present invention proposes a kind of new microfluidic chip mould and method, belongs to micro Process field.The mould mainly includes molding assembly, demoulding component, matched moulds cylinder, fixed support, M5 × 15 hexagon-headed bolt, guide pillar, guide pillar connecting plate, M5 × 30 hexagon-headed bolt, temperature controller, moving platen, estrade, backform cylinder, push rod push pedal, core rod fixed block, push rod, spring housing, copper briquetting, core rod, dc source.The forming method of the new microfluidic chip is:Matched moulds, mold cavity is injected by liquid dimethyl radical siloxane;Mold cavity surface is heated using dc source;Product solidifies, and demoulding component ejects product after die sinking;Product is obtained after removal charge bar, overlap.The characteristics of micro-fluidic chip novel forming method has energy-conservation, safety, formed precision high.

Description

A kind of new microfluidic chip mould and method
Technical field
The invention belongs to micro Process field, it is related to a kind of Novel hot imprinting moulding technology and equipment, application field mainly to have: The fields such as micron/nano processing, microelectronics, material science, optics, microelectromechanical systems, surface chemistry.
Background technology
In recent years by microstructural articles are applied by more industries, sharply increase its demand, required precision More and more higher, existing microstructural articles shaping is mostly the method that hot padding is carried out using final polymer at present, and is used Thermoplastic polymer, its general principle is:Polymer matrix film is heated to more than its glass transition temperature first, then in a level pressure In the presence of power, impressing mould is pressed on polymer matrix film, in making micro-structural of the polymer-filled to mould, cooling and shaping The demoulding afterwards, reaches the purpose of graph copying transfer.But there are the following problems to carry out hot padding using thermoplastic polymer:Impressing Need under conditions of HTHP realize, even and if under conditions of high temperature, high pressure, may still result in polymer can not It is filled up completely with cavity;Material heating cool time is long when press mold material does not have a sufficiently high thermal conductivity.Because these problems are deposited So that the extensive use of polymer hot press printing technology is restricted.Dimethyl silicone polymer inertia, nontoxic, nonflammable, tool There is good optical characteristics, good insulating properties is often applied to micro-structural with micro-fluidic field.
The content of the invention
The deficiency present invention for existing hot pressing printing apparatus provides a kind of hot padding forming method of graphite ene coatings heating, In being injected into the dimethyl silicone polymer of liquid with micro-structural and plate the silicon mould of a layer graphene, using Graphene The characteristics of high conductivity and low sheet resistance, makes liquid under the driving of dc source only to the graphite ene coatings heating of mould Dimethyl siloxane curing molding product, this method heated by graphite ene coatings substantially shortens the technique week of impressing Phase, the former for simplifying hot padding, improve the efficiency of hot padding, greatly save the energy.And due to silicon face ratio More smooth, mobile performance is preferable in a mold for the dimethyl siloxane of liquid, and micro-structural is easy to filling, and duplication degree is high, and solidification Product afterwards is easy to the demoulding, and micro-structural is difficult to be damaged.
The technical scheme for being used to achieve the above object is:A kind of new microfluidic chip mould, mainly includes: Molding assembly, demoulding component, matched moulds cylinder, fixed support, M5 × 15 hexagon-headed bolt, guide pillar, guide pillar connecting plate, M5 × 30 6 Hex bolt, temperature controller, moving platen, estrade, backform cylinder, push rod push pedal, core rod fixed block, push rod, spring housing, copper pressure Block, core rod, dc source.Wherein molding assembly includes:Core rod fixed block, core rod, copper briquetting, core rod are embedded in core rod fixed block The latter half, the top half that copper briquetting is placed on core rod in core rod fixed block compresses core rod;Demoulding component includes:Backform cylinder, Push rod push pedal, push rod, spring housing, the cylinder cap of backform cylinder are connected by bolt with below fixed support, the work of matched moulds cylinder Stopper rod is connected through a screw thread with push rod push pedal, and one end of push rod loads the ejection hole of core rod, and spring housing is filled after being located at push rod one end Enter the ejection passage of core rod;Molding assembly is installed on fixed support, is connected with support bracket fastened side by bolt;Four The two ends of guide pillar connect guide pillar push pedal and moving platen respectively;The cylinder cap of matched moulds cylinder is by phase above bolt and fixed support Even, piston rod and the guide pillar push pedal of matched moulds cylinder are connected through a screw thread;Guide pillar is penetrated in the guide hole of guide pillar push pedal and led to moving platen Cross threaded connection;Electric wire is connected through the wire hole one end on core rod fixed block with copper briquetting, the other end respectively with dc source It is connected with temperature controller.
In whole micro-fluidic chip mould, molding assembly is installed on support bracket fastened side as clamping Fixing end, guide pillar one end is installed on the moving platen end of clamping.Guide pillar play the guiding role during matched moulds and die sinking.Into Moving platen is moved under the drive of guide pillar to molding assembly during type, after the completion of matched moulds, from injection device in mold cavity Injection liquid polydimethyl siloxane material, completion to be injected sets temperature on temperature controller, opens the switch of dc source, Mould is heated, after liquid dimethyl radical siloxane solidification after, moving platen guide pillar drive lower open die, backform cylinder drive Push rod push pedal then promotes push rod to eject product, while spring is compressed, backform cylinder drives push rod push pedal bar to withdraw, spring Resilience causes that push rod resets.
It is using a kind of method of new microfluidic chip mould manufacture micro-fluidic chip of the invention:
The first step:Liquid dimethyl radical siloxane is placed in evacuator and is vacuumized, vacuum time is 1 ~ 5 hour, it After take out mixing liquid imported into injection device.
Second step:Mould matched moulds, is injected into mold cavity, after injection terminates by liquid dimethyl radical siloxane by pouring buccal mass Pressurize, dwell time are carried out until after the shaping of liquid dimethyl radical siloxane cured article.
3rd step:Temperature is set on temperature controller, the switch of dc source is opened, mould is heated,:Treat liquid two Methylsiloxane curing molding, stops pressurize.
4th step:After pressurize terminates, dc source is closed, backform cylinder drive push rod push pedal promotion knock-pin will after die sinking Product is ejected.Meanwhile, runner is reclaimed by uncured material, uncured liquid dimethyl radical siloxane is reclaimed to repeat profit With.
5th step:The charge bar of moulded products is removed, final microstructural articles are obtained.
A kind of hot padding mould of graphite ene coatings heating of the present invention and the beneficial effect of method:
1. using the high conductivity and low sheet resistance of Graphene the characteristics of only heats to the Graphene coating of silicon chip surface, The efficiency of heating surface is high, and molding cycle is greatly shortened and save energy.
2. heated using dc source, energy-conservation, safety can fully improve active power.
3. silicon chip coating surface is smooth, and liquid dimethyl radical siloxane flow resistance in mold cavity is small, and micro-structural is easy to It is full of, duplication degree is high.
4. silicon chip coating surface is smooth, and the demoulding is easy to after the solidification of liquid dimethyl radical siloxane, and micro-structural is difficult to be damaged, essence Degree is high.
Brief description of the drawings:
Fig. 1 is a kind of three dimensional structure diagram of new microfluidic chip mould of the invention.
Fig. 2 is a kind of explosive view of new microfluidic chip mould of the invention.
Fig. 3 is a kind of enlarged drawing of new microfluidic chip molding assembly of the invention.
Fig. 4 is a kind of enlarged drawing of new microfluidic chip demoulding component of the invention.
In figure:1- molding assemblies, 2- demoulding components, 3- matched moulds cylinders, 4- fixed supports, 5-M5 × 15 hexagon-headed bolt, 6- guide pillars, 7- guide pillar connecting plates, 8-M5 × 30 hexagon-headed bolt, 9- temperature controllers, 10- moving platens, 11- M5 × 15 hexagonal Hook bolt, 12- estrades, 13- backform cylinders, 14- push rod push pedals, 15- core rod fixed blocks, 16- push rods, 17- spring housings, 18- copper Briquetting, 19- core rods, 20- dc sources.
Specific embodiment:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the mould mainly includes a kind of new microfluidic chip mould of the present invention:Into Type component 1, demoulding component 2, matched moulds cylinder 3, fixed support 4, M5X15 hexagon-headed bolts 5 and 11, guide pillar 6, guide pillar connecting plate 7, M5X30 hexagon-headed bolts 8, temperature controller 9, moving platen 10, estrade 12, backform cylinder 13, push rod push pedal 14, core rod fixed block 15th, push rod 16, spring housing 17, copper briquetting 18, core rod 19, dc source 20.Wherein molding assembly 1 includes:Core rod fixed block 15, Core rod 19, copper briquetting 18, core rod 19 are embedded in the inner the latter half of core rod fixed block 15, and copper briquetting 18 is placed on the inner mould of core rod fixed block 15 The top half of core compresses core rod;Demoulding component 2 includes:Backform cylinder 13, push rod push pedal 14, push rod 16, spring housing 17, backform The cylinder cap of cylinder 13 is connected by bolt with below fixed support 4, and piston rod and the push rod push pedal 14 of matched moulds cylinder 3 pass through spiral shell Line is connected, and one end of push rod 16 loads the ejection hole of core rod 19, and spring housing 17 is located at the ejection of loading core rod 19 behind push rod one end Passage;Molding assembly 1 is installed on fixed support 4, is connected with the side of fixed support 4 by bolt;Four the two of guide pillar 6 End connects guide pillar push pedal 14 and moving platen 10 respectively;The cylinder cap of matched moulds cylinder 3 is connected by bolt with above fixed support 4, The piston rod of matched moulds cylinder 3 is connected through a screw thread with guide pillar push pedal 14;Guide pillar 6 is penetrated in the guide hole of guide pillar push pedal and moving platen 10 It is connected through a screw thread;Electric wire is connected through the wire hole one end on core rod fixed block 15 with copper briquetting 18, the other end respectively with directly Stream power supply 20 is connected with temperature controller 9.
In whole micro-fluidic chip mould, molding assembly 1 is installed on the side of fixed support 4 as clamping Fixing end, the one end of guide pillar 6 is installed on the moving platen end of clamping.Guide pillar 6 play the guiding role during matched moulds and die sinking. Moving platen 10 is moved under the drive of guide pillar to molding assembly 1 in forming process, after the completion of matched moulds, from injection device to mould Injection liquid polydimethyl siloxane material in die cavity, completion to be injected sets temperature on temperature controller, opens dc source 20 Switch, mould is heated, after liquid dimethyl radical siloxane solidification after, moving platen guide pillar drive lower open die, backform Cylinder 13 drives push rod push pedal 14 then to promote push rod 16 to eject product, while spring housing 17 is compressed, the band of backform cylinder 13 Dynamic push rod push pedal bar 14 withdraws, and the resilience of spring housing 17 causes that push rod 16 resets.
It is using a kind of method of new microfluidic chip mould manufacture micro-fluidic chip of the invention:
The first step:Liquid dimethyl radical siloxane is placed in evacuator and is vacuumized, vacuum time is 1 ~ 5 hour, it After take out mixing liquid imported into injection device.
Second step:Mould matched moulds, is injected into mold cavity, after injection terminates by liquid dimethyl radical siloxane by pouring buccal mass Pressurize, dwell time are carried out until after the shaping of liquid dimethyl radical siloxane cured article.
3rd step:Temperature is set on temperature controller, the switch of dc source is opened, mould is heated,:Treat liquid two Methylsiloxane curing molding, stops pressurize.
4th step:After pressurize terminates, dc source is closed, backform cylinder drive push rod push pedal promotion knock-pin will after die sinking Product is ejected.Meanwhile, runner is reclaimed by uncured material, uncured liquid dimethyl radical siloxane is reclaimed to repeat profit With.
5th step:The charge bar of moulded products is removed, final microstructural articles are obtained.

Claims (2)

1. a kind of new microfluidic chip mould, it is characterised in that mainly include:Molding assembly(1), demoulding component(2)、 Matched moulds cylinder(3), fixed support(4), M5 × 15 hexagon-headed bolt(5)With(11), guide pillar(6), guide pillar connecting plate(7)、M5× 30 hexagon-headed bolts(8), temperature controller(9), moving platen(10), estrade(12), backform cylinder(13), push rod push pedal(14)、 Core rod fixed block(15), push rod(16), spring housing(17), copper briquetting(18), core rod(19), dc source(20);
Wherein molding assembly(1)Including:Core rod fixed block(15), core rod(19), copper briquetting(18), core rod(19)Core rod is embedded in consolidate Determine block(15)In the latter half, copper briquetting(18)It is placed on core rod fixed block(15)In core rod(19)Top half compress core rod (19);Demoulding component(2)Including:Backform cylinder(13), push rod push pedal(14), push rod(16), spring housing(17), backform cylinder (13)Cylinder cap pass through M5 × 15 hexagon-headed bolt(5)With fixed support(4)Below be connected, matched moulds cylinder(3)Piston rod With push rod push pedal(14)It is connected through a screw thread, push rod(16)One end load core rod(19)Ejection hole, spring housing(17)It is located at Push rod(16)Load core rod behind one end(19)Ejection passage;Molding assembly(1)It is installed on fixed support(4)On, by M5 × 30 hexagon-headed bolts(8)With fixed support(4)Side be connected;Four guide pillars(6)Two ends connect guide pillar connecting plate respectively(7) And moving platen(10);Matched moulds cylinder(3)Cylinder cap pass through M5 × 15 hexagon-headed bolt(11)With fixed support(4)Above phase Even, matched moulds cylinder(3)Piston rod and guide pillar connecting plate(7)It is connected through a screw thread;Guide pillar(6)Penetrate guide pillar connecting plate(7)'s In guide hole and moving platen(10)It is connected through a screw thread;Electric wire passes through core rod fixed block(15)On wire hole one end and copper briquetting (18)Be connected, the other end respectively with dc source(20)And temperature controller(9)It is connected;
In whole micro-fluidic chip mould, molding assembly(1)It is installed on fixed support(4)Side as clamping Fixing end, guide pillar(6)One end is installed on the moving platen end of clamping;Guide pillar(6)Guiding is played during matched moulds and die sinking Effect;The moving platen in forming process(10)In guide pillar(6)Drive under to molding assembly(1)It is mobile, after the completion of matched moulds, by noting Injection device is to injection liquid polydimethyl siloxane material in mold cavity, completion to be injected, in temperature controller(9)Upper setting Temperature, opens dc source(20)Switch, mould is heated, after liquid dimethyl radical siloxane solidification after, moving platen (10)In guide pillar(6)Drive lower open die, backform cylinder(13)Drive push rod push pedal(14)Then push rod is promoted(16)By product Ejection, while spring housing(17)Compressed, backform cylinder(13)Drive push rod push pedal(14)Withdraw, spring housing(17)Resilience is caused Push rod resets.
2. using a kind of method of the new microfluidic chip mould moulded products described in claim 1, it is characterised in that The first step:Liquid dimethyl radical siloxane is placed in evacuator and is vacuumized, vacuum time is 1 ~ 5 hour, Zhi Houqu Go out and mixing liquid is imported into injection device;
Second step:Mould matched moulds, mold cavity is injected into by liquid dimethyl radical siloxane by pouring buccal mass, and injection is carried out after terminating Pressurize, dwell time are until after the shaping of liquid dimethyl radical siloxane cured article;
3rd step:Temperature is set on temperature controller, the switch of dc source is opened, mould is heated,:Treat liquid dimethyl base Cured silicone is molded, and stops pressurize;
4th step:After pressurize terminates, dc source is closed, backform cylinder drives push rod push pedal to promote knock-pin by product after die sinking Ejection;Meanwhile, runner is reclaimed by uncured material, uncured liquid dimethyl radical siloxane is reclaimed to reuse;
5th step:The charge bar of moulded products is removed, final microstructural articles are obtained.
CN201611099080.6A 2016-12-04 2016-12-04 A kind of new microfluidic chip mould and method Pending CN106738641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611099080.6A CN106738641A (en) 2016-12-04 2016-12-04 A kind of new microfluidic chip mould and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611099080.6A CN106738641A (en) 2016-12-04 2016-12-04 A kind of new microfluidic chip mould and method

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CN106738641A true CN106738641A (en) 2017-05-31

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081555A (en) * 2017-12-28 2018-05-29 太仓朗盛金属制品有限公司 A kind of undercut loose-core injection mould and its method of work

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103203837A (en) * 2013-04-27 2013-07-17 北京化工大学 Photo-curing injection molding mould and method
CN204604751U (en) * 2015-04-10 2015-09-02 北京化工大学 Based on Graphene coating rapid thermal cycles Coinjection molding apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103203837A (en) * 2013-04-27 2013-07-17 北京化工大学 Photo-curing injection molding mould and method
CN204604751U (en) * 2015-04-10 2015-09-02 北京化工大学 Based on Graphene coating rapid thermal cycles Coinjection molding apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108081555A (en) * 2017-12-28 2018-05-29 太仓朗盛金属制品有限公司 A kind of undercut loose-core injection mould and its method of work

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