CN103624992B - A kind of sheet material press device and press working method of polymer micro-structural - Google Patents
A kind of sheet material press device and press working method of polymer micro-structural Download PDFInfo
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- CN103624992B CN103624992B CN201310591984.0A CN201310591984A CN103624992B CN 103624992 B CN103624992 B CN 103624992B CN 201310591984 A CN201310591984 A CN 201310591984A CN 103624992 B CN103624992 B CN 103624992B
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Abstract
The invention discloses a kind of pressure setting and press working method of polymer micro-structural, comprise press-roller device and the mould press of sheet extruder, leveling tune thickness; Drawing method is the equipment that polymer matrix film directly enters dull and stereotyped impression from extruder is extruded: first flatten after the preliminary sizing of substrate by two roller roll-ins, polymer surfaces is carried out to Fast Heating processing, while making polymer matrix film surface temperature higher than glassy state or fusing point, enter dull and stereotyped impressing mould and impress and prepare micro-structural; This invention, by the use of connecting with extruder of dull and stereotyped micro-structural hot padding equipment, has been saved mass energy, has improved production efficiency; Adopt flat-plate compressed of the present invention to print standby polymer micro-structural simultaneously, can ensure the enough pressurize cooling and shaping time, accurate chilling temperature, how much higher replication rates; Adopt the present invention can realize the large-scale continuous high efficiency suitability for industrialized production of dull and stereotyped impression.<b/><b/>
Description
Technical field
The present invention relates to the continuous embossed former of a kind of polymer micro-structural and processing method, relate in particular to a kind of flat-plate compressed and printEquipment and the method for standby polymer micro-structural, belong to technical field of polymer processing.
Background technology
Hot-forming script is a kind of traditional Machining Technology, is usually used in powder hot forming. Nineteen ninety-five, Princeton is largeThe people such as the Chou learning propose nanometer embossing, the making of the nanostructured that takes the lead in traditional hot extrusion briquetting technique to be applied to,So-called hot padding. The people such as Weber proposed hot-pressing technique to be applied to micro-manufacture field in 1996 subsequently. They think low-grade feverPressure technology will be a kind ofly can produce in a large number the forming technique with accurate micro-structural, also mentions in this way and producing simultaneouslyThe finished product coming may some defect, and as incomplete in filling, finished product exists the problems such as contraction, warpage and surface roughness are large.
Because micro-hot-pressing technique has numerous advantages, along with the development of MEMS technology, this technology has obtained numerous scholars'Pay attention to, also emerge a large amount of achievements in research. Polymeric material has physics and chemical property quite widely, has low simultaneouslyCost and be suitable for the many merits such as manufacture in enormous quantities, thereby along with the development of nanometer technique, polymeric material optics,Application in chemistry, biology and micro electronmechanical field is more and more extensive. As micro-optics aspect: diffractive element (DOE), fiber waveguide group(Waveguide), microlens array (Microlensarray), the joints of optical fibre (Opticalcouple), LCD; Biological doctorAspect: biochip (Bio-Chip), pcr amplification, DNA sequencing and detector etc.; Chemistry aspect: Capillary Electrophoresis(CE), laboratory, micro-fluidic chip, micro-mixer (Micro-mixer) etc. on sheet, and nano biological medical material.
The research of subfebrile temperature in pression technology be unable to do without Embosser, and the research and development of Embosser are also that of technique is importantAspect, owing to being the micro-structural of manufacturing Nano grade, so hot padding forming machine is also had to strict especially requirement.
Mostly forming method for micro-embossing is dull and stereotyped hot stamp machine, the nano impression described in patent 200510019944.4Machine, its principle is that the polymer matrix film under room temperature is fixed in the lower plate of hot stamp machine, in lower plate, be equipped with heating-cooling device withAnd positioner. Impressing mould is fixed on upper plate, and heating-cooling device is also installed on it. When work, first to being fixed onPolymer matrix film in lower plate heats, and makes it reach the needed temperature of impression, and mould also will be heated to certain temperature,To ensure polymer mold filling completely. Then upper substrate driven mold pressurizes to polymer matrix film, and polymer-filled is arrivedIn impressing mould, pressurize is carried out the demoulding after cooling a period of time, thereby completes time processing process. This method belongs to discontinuousFormula is produced, and infrabasal plate heating is cooling too frequent and speed is slow, and energy consumption is large, and the stream of polymer matrix film after post bakeMoving property is difficult to reach desired degree, often causes graph copying low precision, and micro-structural shifts imperfect. For this reason, inventedA variety of mode of heatings are used for improving the slow problem of heating cooling velocity, as the electromagnetic wave being used in patent 200410050075.7Heating etc., heating cooling effectiveness when these methods have improved hot padding, has saved molding time. Patent 2002131969.3 withAnd patent 200510069953.4 invented a kind of thermal marking method pressurizeing with gas, because the equal pressure of gas molecule dividesCloth characteristic, the homogeneity question of pressure distribution can solve hot padding time, makes to impress area unrestricted, pressurization good uniformity.But all more complicated of the production equipment of these methods, production efficiency is low, and the repeatable accuracy of product is poor.
In order to improve the above-mentioned shortcoming of dull and stereotyped thermal marking method, patent 200810068662.7, has designed the micro-continuously of pulley typeMethod for stamping, general principle is to adopt two synchronous rollers that rotate to complete the impression to polymer matrix film, one of them rollerHave micro-embossing mould, polymer matrix film is by regulating two distances between roller to regulate the pressure being applied on polymer matrix filmPower. This structure can realize continous way and produce, and while impression, owing to being line contact, has reduced to impress the required power applying simultaneously, pressesPrinting apparatus distortion is little, has improved the uniformity of pressure distribution. But, dwell time when this kind of method is applied to polymer hot paddingShort, microfabrication difficulty is large, can cause occurring elastic recovery phenomenon after polymer micro-structural shaping and demoulding, cannot ensure figureThe precision copying.
Summary of the invention
One of object of the present invention is the shortcoming that overcomes existing sheet material press device, and a kind of sheet material compacting of polymer micro-structural is providedEquipment, this equipment, by dull and stereotyped micro-structural hot padding equipment and extruder assembled in series, has been avoided prior art middle plateform impressing mouldNeed the constantly cooling required complicated heating and cooling system of frequent heating, can save the energy, improve production efficiency, withTime avoided ordinary flat method for stamping in the time that substrate carries out post bake due to the inhomogeneous stress deformation causing of being heated, mobilityInhomogeneously cause the problems such as mold filling is insufficient.
In order to achieve the above object, the technical solution used in the present invention is:
A sheet material press device for polymer micro-structural, comprises the sheet extruder that sets gradually, for carrying out flatness and thicknessThe press-roller device and the mould press that regulate,
Described mould press be provided with mould bases, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism, horizontal drive mechanism andPLC control system, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism and level described in the control of described PLC control systemDriving mechanism;
Described horizontal mobile mechanism is provided with guide rail and slide block, and described guide rail is fixed on horizontal plane, and described mould bases bottom is provided with slide block,Described slide block is assemblied in described guide rail;
Described horizontal drive mechanism is provided with drive motors and horizontally tracting screw mandrel, and described drive motors drives described horizontally tracting screw mandrelMotion, described horizontally tracting screw mandrel drives and is connected with described mould bases, and described horizontally tracting screw mandrel drives described mould bases to lead along describedRail moves;
Described press moulding mechanism is provided with cope match-plate pattern, lower bolster and guide pillar, and described lower bolster, described guide pillar are fixedly installed on described mould bases,Described cope match-plate pattern activity is assemblied in described guide pillar and described cope match-plate pattern and described lower bolster and matches;
Described pressing mold driving mechanism is provided with lift, and described lift is fixedly assemblied in described mould bases, the drive end of described liftBe fixedly connected with described cope match-plate pattern by float connector;
The output of described mould press is provided with traction wind-up roll, and described press-roller device output is provided with nonstorage calorifier, upper,In lower bolster, be provided with cooling device, the polymer matrix film of extruding through sheet extruder, through press-roller device two pressure rollers, then passesBetween the upper and lower template of mould press, after impression, be set around rolling carry-over pinch rolls.
Above-mentioned drive motors is servomotor, and described horizontally tracting screw mandrel is set to ball screw, and servomotor passes through ball screwBe connected with mould bases.
Between above-mentioned float connector and cope match-plate pattern, be provided with pressure sensor, described pressure sensor and described PLC control system electricitySignal connects.
Above-mentioned float connector is grouped into by upper part and bottom, and the lower end of upper part is provided with groove, and the bottom of groove is a plane,The upper end of lower part is provided with the connector with upper part groove fit, and the top of this connector is a sphere.
In device of the present invention, flat-plate compressed die plate is mounted on high-precision mould bases, after template is installed, and upper and lower two templatesThe depth of parallelism can reach 0.1-100 μ m, the area of template can be square or rectangle.
In device of the present invention, on cope match-plate pattern or lower bolster, have micro-structural, the size characteristic of micro-structural includes but not limited to miniflowControl chip, lenticule, deep trouth, V-type groove, polygon micro-structural.
In device of the present invention, in template, there is the runner to mold heated, in runner for the material heating can be water heating,The heating of hot pressing oil, Steam Heating, Hot-blast Heating.
In device of the present invention, the back and forth front and back advance and retreat process of impression motion up and down, Embosser of impression block is by servoThe combination of motor and ball screw, is programmed and is accurately controlled by PLC.
Another object of the present invention be for the dull and stereotyped impression of micro-structural need to frequently heat cooling die, heating cooling velocity slow,Can not ensure uniformity that polymeric matrix is heated, the shortcoming of can not continuity producing in enormous quantities, and impress in micro-structural roll-inThe shortcoming that dwell time is short, polymeric matrix mold filling is insufficient, the low precision of microstructure replication rate is low, provides a kind of micro polymer knotStructure press working method, polymer is from sheet material head is extruded, first thick by the smooth tune of two ganoid roller roll-ins, adopts poly-Substrate one side or bilateral temperature are heated to rapidly to glass transition temperature to compound surface heating method or fusing point directly enters when aboveThe flat-plate compressed printing apparatus with micro-structural impresses prepares micro-structural. The movement of substrate is under the traction of carry-over pinch rolls, its speedSpend identically with the movement velocity of flat-plate compressed printing apparatus, flat-plate compressed printing apparatus is can be reciprocating.
A processing method of utilizing above-mentioned sheet material press device processable polymer substrate, comprises the steps:
A, polymer are squeezed into the polymer matrix film of sheet by sheet extruder;
B, polymer matrix film enter press-roller device and carry out flatness and thickness adjusting;
C, input to nonstorage calorifier position from press-roller device polymer matrix film out, utilize nonstorage calorifier to adopt polymerizationPolymer matrix film one side or bilateral temperature are heated to rapidly to glass transition temperature to thing surface heating method or fusing point is direct when aboveBe delivered to compacting cooling and shaping between the upper and lower template of mould press of the flat board compacting with micro-structural;
D, mould press, under the control of PLC control system, drive slide block driving along guide rail by driving mechanism wholeMould bases does along polymer-extruded direction and moves, and is drawing the upper and lower template of compacting and is moving along polymer-extruded direction;
After mould press moves to desired location, be stop motion, lift rotates backward, and traction cope match-plate pattern and lower bolster divideFrom making the polymer matrix film demoulding, after the polymer matrix film demoulding, under the traction of traction wind-up roll, move forward and received by tractionWinding up roller is collected; Now driving mechanism rotates backward, and drives slide block driving whole mould bases to do along polymer-extruded direction along guide railOpposite direction motion, promote imprinting apparatus and be returned to home position, enter the next impression cycle;
Reciprocating motion speed at moulding process middle plateform imprinting apparatus is consistent with the speed of traction wind-up roll, and in reciprocal fortuneIn moving process, impressing pressure remains unchanged.
Pressure limit in described step D is between 1-50KN, and the speed of traction wind-up roll is controlled at 0.5-5m/s.
In described step D, driving mechanism rotates backward, and drives slide block driving whole mould bases to do along polymer-extruded along guide railReturn translational speed when the opposite direction of direction is moved is 3-10 times of moulding process translational speed.
Polymer surfaces heating means in described step C are flame heating.
Described polymer matrix film is PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer; Or
Described polymer matrix film is at least two kinds of structures in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymerThe blend polymer becoming; Or
Described polymer matrix film be in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer at least one withThe composite that inorganic material forms;
Described polymer matrix film is single sheet or is multi-layer co-extruded sheet material.
Described upper and lower template is respectively equipped with hot flow path separately, and the distribution of hot flow path adopts S type to distribute to ensure die plate temperatureUniformity.
In method of the present invention, the pressing of substrate adjusts thick device to be made up of two synchronous precompressed THICKNESS CONTROL rollers that rotate, between its rollerApart from can fine adjustment, to ensure that polymer matrix film carries out the evenly adjustable of thickness before micro-structural hot padding.
In method of the present invention, the spiral lift that pressure-driven system is made up of a servomotor and ball screw, adoptsHigh-precision ball screw and servomotor combination, realize the accurate feedback control of depth of indentation.
In method of the present invention, the connection between ball screw and pressure sensor, is to ensure by a set of floating junction deviceThe uniformity of impression pressure, impression pressure is controlled at 1-50KN.
In method of the present invention, the moulding process of polymer matrix film, is higher than vitrifying inversion temperature in polymer-extruded rear temperatureImpress, impressing required heat is the waste heat after extruding before.
Effect of the present invention: method of the present invention is to adopt polymer from head is extruded, and prints smooth adjustment thickness by two roll-ins,By methods such as high temperature flame heating fast, heated polymerizable thing surface, makes its surface melting rapidly, directly enters dull and stereotyped impressionEquipment impresses pressurize cooling and shaping, and because polymer sheet is adjusted when thick by two rollers, sheet material inside is completely not cooling, avoidsThe stress deformation that external heat inhomogeneous cooling causes in sheet material, the flatness of substrate and the uniformity of heat while having ensured impression. WithTime, save the ordinary flat impression block energy loss that frequently the cooling sheet material of heating causes and low working (machining) efficiency,, adopt meanwhileWith flat-plate compressed printing apparatus of the present invention, can ensure enough pressurize shaping times, accurate chilling temperature, how much replication rates are high,Prepared micro-structural precision is high, and die manufacturing cost is lower, has realized the continuous of the dull and stereotyped impression of polymer surfaces microstructure productsChemical industry is produced, and has greatly improved production efficiency. Because the low-grade fever platen press of this equipment is a kind of flexible processing method, itsParticularly aspect the processing of micro-fluidic chip, minitype radiator, biochip and micro-optical device, demonstrating at micro-manufacture fieldHuge commercial promise.
Brief description of the drawings
Fig. 1 is the structural representation of the sheet material press device of a kind of polymer micro-structural of the present invention;
Fig. 2 is the schematic flow sheet that the present invention impresses;
In figure: 1 is sheet extruder, 2 is press-roller device, and 3 is lift, and 4 is drive end, 5 float connectors, and 6 arePressure sensor, 7 is mould bases, and 81 is cope match-plate pattern, and 82 is lower bolster, and 9 is slide block, and 10 is guide rail, and 11 is horizontally tracting silkBar, 12 is drive motors, and 13 is rolling carry-over pinch rolls, and 14 is polymer matrix film, guide pillar 16.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
The sheet material press device of a kind of polymer micro-structural of the present invention as shown in Figure 1, comprise the sheet extruder 1 that sets gradually,The press-roller device 2 and the mould press that regulate for carrying out flatness and thickness.
Mould press be provided with mould bases 7, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism, horizontal drive mechanism andPLC control system, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism and level are driven described in the control of PLC control systemThe motion of actuation mechanism.
Horizontal mobile mechanism is provided with guide rail 10 and slide block 9, and guide rail 10 is fixed on horizontal plane, and mould bases 7 bottoms are provided with slide block 9,Slide block 9 is assemblied in guide rail 10.
Horizontal drive mechanism is provided with drive motors 12 and horizontally tracting screw mandrel 11, and drive motors 12 drives horizontally tracting screw mandrel 11Motion, horizontally tracting screw mandrel 11 drives and is connected with mould bases 7, and horizontally tracting screw mandrel 11 drives mould bases 7 to move along guide rail 10.Concrete, drive motors 12 is servomotor, and horizontally tracting screw mandrel 11 is set to ball screw, and servomotor passes through ball wireBar is connected with mould bases 7.
Press moulding mechanism is provided with cope match-plate pattern 81, lower bolster 82 and guide pillar 16, and lower bolster 82, guide pillar 16 are fixedly installed on mould bases 7,Cope match-plate pattern 81 activities are assemblied in guide pillar 16 and cope match-plate pattern 81 matches with lower bolster 82.
Pressing mold driving mechanism is provided with lift 3, and lift 3 is fixedly assemblied in mould bases 7, and the drive end 4 of lift 3 is by floatingMovement connector 5 is fixedly connected with cope match-plate pattern 81. Float connector 5 is grouped into by upper part and bottom, and the lower end of upper part is provided withGroove, the bottom of groove is a plane, the upper end of lower part is provided with the connector with upper part groove fit, the top of this connectorPortion is a sphere. Between float connector 5 and cope match-plate pattern 81, be also provided with pressure sensor 6, pressure sensor 6 is controlled with PLCThe system signal of telecommunication connects.
The output of mould press is provided with traction wind-up roll, and press-roller device 2 outputs are provided with nonstorage calorifier, at upper and lower mouldIn plate 82, be provided with cooling device, the polymer matrix film 14 of extruding through sheet extruder 1 through 2 liang of pressure rollers of press-roller device,Again through being set around rolling carry-over pinch rolls 13 the upper and lower template 82 of mould press after impression.
By the sheet material press device of this polymer micro-structural, polymer from sheet extruder 1 after accurate sheet material head is extruded,Enter leveling and adjust thick press-roller device 2, press-roller device 2 is controlled the thickness of polymer matrix film 14, by roll-in, substrate is reached simultaneouslyTo good flatness. Polymer matrix film 14 after pressing tune is thick enters dull and stereotyped imprinting apparatus, the drive end 4 of lift 3Move downward pushing cope match-plate pattern 81 and move down impression micro-structural along guide pillar 16; Drive end 4 and the pressure sensing of lift 3The jockey of device 6 is a set of float connectors 5, and float connector 55 can ensure in moulding process that mould bases 7 templates are stressedUniformity. Pressure sensor 6 is preferably set to radial pressure sensor 6, can accurately measure the pressure of impression, measuresScope is 0-50KN, thereby can realize the accurate control of impression pressure, simultaneously can be by adjusting the temperature of polymer matrix film 14Control the depth of indentation of micro-structural template with the size of impression pressure. A whole set of dull and stereotyped imprinting apparatus is to move under the control of PLC, be arranged on substrate by slide block 9, guide rail 10, and by horizontally tracting screw mandrel and driven by servomotor slide block 9 at guide rail 10On move reciprocatingly. Drive motors and horizontally tracting screw mandrel are drawing dull and stereotyped imprinting apparatus and are doing reciprocating fortune along polymer-extruded directionMoving, the reciprocating motion speed of moulding process middle plateform imprinting apparatus and rolling carry-over pinch rolls 13 speed are consistent, hauling speed controlAt 0.5-5m/s.
Adopt the sheet material press device of this polymer micro-structural of the present invention to carry out continuous embossed method and principle as shown in Figure 2: poly-After compound substrate 14 adjusts thick press-roller device 2 out from leveling, enter that flat-plate compressed stamps, lower bolster 82 (seeing Fig. 2 A);Lift 3 drives cope match-plate pattern to move downward, and cope match-plate pattern 81 and lower bolster 82 are coordinated, and polymer matrix film 14 is impressed and (seenFig. 2 B); Upper and lower template 82 coordinates after impression, and servomotor and horizontally tracting screw mandrel drive Embosser to move along extruding direction(seeing Fig. 2 C), impresses pressure in this process and remains unchanged, and controlled range is between 0-50KN, and movement velocity is controlled at 0.5-5M/s; Moving to behind appropriate location is stop motion, and now, lift 3 rotates backward, traction cope match-plate pattern 81 and lower bolster 82Separate, make polymer matrix film 14 be able to the demoulding (seeing Fig. 2 D); Polymer matrix film 14 is from the press moulding mechanism demoulding, in tractionUnder the traction of wind-up roll, move forward and be collected; Now servomotor rotates backward, and this return process translational speed is impressionDoubly, device is done quick return to the 3-10 of process translational speed, promotes imprinting apparatus and is returned to home position (seeing Fig. 2 E), entersIn the next impression cycle, realize the continuity of the dull and stereotyped impression of micro-structural and carry out.
The present invention adopts polymer from head is extruded, and prints smooth adjustment thickness by two roll-ins, by high temperature fast flame addThe methods such as heat, rapidly heated polymerizable thing surface, makes its surface melting, and directly entering flat-plate compressed printing apparatus, to impress pressurize coolingSizing, because polymer sheet is adjusted when thick by two rollers, sheet material inside is completely not cooling, has avoided in sheet material external heat coolingThe stress deformation all causing, the flatness of substrate and the uniformity of heat while having ensured impression. Meanwhile, saved ordinary flat pressureThe energy loss that the cooling sheet material of the frequent heating of die plate causes and low working (machining) efficiency, meanwhile, adopt flat-plate compressed printing apparatus of the present invention,Can ensure enough pressurize shaping times, accurate chilling temperature, how much replication rates are high, and prepared micro-structural precision is high,Die manufacturing cost is lower, has realized the serialization industrial production of the dull and stereotyped impression of polymer surfaces microstructure products, has greatly improvedProduction efficiency. Because the low-grade fever platen press of this equipment is a kind of flexible processing method, its at micro-manufacture field particularly micro-The processing aspect of fluidic chip, minitype radiator, biochip and micro-optical device has demonstrated huge commercial promise.
Embodiment 2
A processing method for processable polymer substrate, adopts sheet material press device as described in Example 1 to process, concreteComprise the steps:
A, polymer are squeezed into the polymer matrix film of sheet by sheet extruder;
B, polymer matrix film enter press-roller device and carry out flatness and thickness adjusting;
C, input to nonstorage calorifier position from press-roller device polymer matrix film out, utilize nonstorage calorifier to adopt polymerizationPolymer matrix film one side or bilateral temperature are heated to rapidly to glass transition temperature to thing surface heating method or fusing point is direct when aboveBe delivered to compacting cooling and shaping between the upper and lower template of mould press of the flat board compacting with micro-structural;
D, mould press, under the control of PLC control system, drive slide block driving along guide rail by driving mechanism wholeMould bases does along polymer-extruded direction and moves, and is drawing the upper and lower template of compacting and is moving along polymer-extruded direction;
After mould press moves to desired location, be stop motion, lift rotates backward, and traction cope match-plate pattern and lower bolster divideFrom making the polymer matrix film demoulding, after the polymer matrix film demoulding, under the traction of traction wind-up roll, move forward and received by tractionWinding up roller is collected; Now driving mechanism rotates backward, and drives slide block driving whole mould bases to do along polymer-extruded direction along guide railOpposite direction motion, promote imprinting apparatus and be returned to home position, enter the next impression cycle;
Reciprocating motion speed at moulding process middle plateform imprinting apparatus is consistent with the speed of traction wind-up roll, and in reciprocal fortuneIn moving process, impressing pressure remains unchanged.
Wherein, polymer matrix film is PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer; Or polymerSubstrate is the polyblend of at least two kinds of formations in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymerThing; Or polymer matrix film be in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer at least one withThe composite that inorganic material forms. Polymer matrix film is single sheet or is multi-layer co-extruded sheet material.
Wherein, the polymer surfaces heating means in step C are flame heating.
Pressure limit in step D is between 1-50KN, and the speed of traction wind-up roll is controlled at 0.5-5m/s.
In step D, driving mechanism rotates backward, and drives slide block driving whole mould bases to do along polymer-extruded direction along guide railThe return translational speed in opposite direction when motion be moulding process translational speed 3-10 doubly.
Upper and lower template is respectively equipped with hot flow path separately, and the distribution of hot flow path adopts S type to distribute to ensure the even of die plate temperatureProperty.
In the present invention, the pressing of substrate adjusts thick device to be made up of two synchronous precompressed THICKNESS CONTROL rollers that rotate, and its roller spacing can essenceReally regulate, to ensure that polymer matrix film carries out the evenly adjustable of thickness before micro-structural hot padding.
In the present invention, the spiral lift that pressure-driven system is made up of a servomotor and ball screw, adopts high accuracyBall screw and servomotor combination, realize the accurate feedback control of depth of indentation.
In the present invention, the connection between ball screw and pressure sensor, is to ensure impression pressure by a set of floating junction deviceThe uniformity of power, impression pressure is controlled at 1-50KN.
In the present invention, the moulding process of polymer matrix film, is to enter before polymer-extruded rear temperature is higher than vitrifying inversion temperatureRow impression, impressing required heat is the waste heat after extruding.
The present invention adopts polymer from head is extruded, and prints smooth adjustment thickness by two roll-ins, by high temperature fast flame addThe methods such as heat, rapidly heated polymerizable thing surface, makes its surface melting, and directly entering flat-plate compressed printing apparatus, to impress pressurize coolingSizing, because polymer sheet is adjusted when thick by two rollers, sheet material inside is completely not cooling, has avoided in sheet material external heat coolingThe stress deformation all causing, the flatness of substrate and the uniformity of heat while having ensured impression. Meanwhile, saved ordinary flat pressureThe energy loss that the cooling sheet material of the frequent heating of die plate causes and low working (machining) efficiency, meanwhile, adopt flat-plate compressed printing apparatus of the present invention,Can ensure enough pressurize shaping times, accurate chilling temperature, how much replication rates are high, and prepared micro-structural precision is high,Die manufacturing cost is lower, has realized the serialization industrial production of the dull and stereotyped impression of polymer surfaces microstructure products, has greatly improvedProduction efficiency. Because the low-grade fever platen press of this equipment is a kind of flexible processing method, its at micro-manufacture field particularly micro-The processing aspect of fluidic chip, minitype radiator, biochip and micro-optical device has demonstrated huge commercial promise.
Finally it should be noted that above embodiment is only in order to technical scheme of the present invention to be described but not to protection domain of the present inventionRestriction, although the present invention is explained in detail with reference to preferred embodiment, those of ordinary skill in the art should be appreciated that passableTechnical scheme of the present invention is modified or is equal to replacement, and do not depart from essence and the scope of technical solution of the present invention.
Claims (10)
1. a sheet material press device for polymer micro-structural, comprises the sheet extruder setting gradually, the press-roller device and the mould press that regulate for carrying out flatness and thickness, it is characterized in that:
Described mould press is provided with mould bases, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism, horizontal drive mechanism and PLC control system, press moulding mechanism, pressing mold driving mechanism, horizontal mobile mechanism and horizontal drive mechanism described in the control of described PLC control system;
Described horizontal mobile mechanism is provided with guide rail and slide block, and described guide rail is fixed on horizontal plane, and described mould bases bottom is provided with slide block, and described slide block is assemblied in described guide rail;
Described horizontal drive mechanism is provided with drive motors and horizontally tracting screw mandrel, described drive motors drives described horizontally tracting screw mandrel motion, described horizontally tracting screw mandrel drives and is connected with described mould bases, and described horizontally tracting screw mandrel drives described mould bases to move along described guide rail;
Described press moulding mechanism is provided with cope match-plate pattern, lower bolster and guide pillar, and described lower bolster, described guide pillar are fixedly installed on described mould bases, and described cope match-plate pattern activity is assemblied in described guide pillar and described cope match-plate pattern and described lower bolster and matches;
Described pressing mold driving mechanism is provided with lift, and described lift is fixedly assemblied in described mould bases, and the drive end of described lift is fixedly connected with described cope match-plate pattern by float connector;
The output of described mould press is provided with traction wind-up roll, described press-roller device output is provided with nonstorage calorifier, in upper and lower template, be provided with cooling device, the polymer matrix film of extruding through sheet extruder through press-roller device two pressure rollers, then through the upper and lower template of mould press through impression after be set around rolling carry-over pinch rolls.
2. the sheet material press device of polymer micro-structural according to claim 1, is characterized in that: described drive motors is servomotor, and described horizontally tracting screw mandrel is set to ball screw, and servomotor is connected with mould bases by ball screw.
3. the sheet material press device of polymer micro-structural according to claim 1, is characterized in that: between described float connector and cope match-plate pattern, be provided with pressure sensor, described pressure sensor is connected with the described PLC control system signal of telecommunication.
4. the sheet material press device of polymer micro-structural according to claim 3, it is characterized in that: described float connector is grouped into by upper part and bottom, the lower end of upper part is provided with groove, the bottom of groove is a plane, the upper end of lower part is provided with the connector with upper part groove fit, and the top of this connector is a sphere.
5. a processing method of utilizing sheet material press device processable polymer substrate described in claim 1, is characterized in that comprising the steps:
A, polymer are squeezed into the polymer matrix film of sheet by sheet extruder;
B, polymer matrix film enter press-roller device and carry out flatness and thickness adjusting;
C, input to nonstorage calorifier position from press-roller device polymer matrix film out, utilize nonstorage calorifier to adopt polymer surfaces heating means that polymer matrix film one side or bilateral temperature are heated to rapidly to also cooling and shaping of compacting between the upper and lower template of mould press that glass transition temperature or fusing point be directly delivered to the flat board compacting with micro-structural when above;
D, mould press, under the control of PLC control system, drive slide block driving whole mould bases to do along polymer-extruded direction along guide rail by driving mechanism and move, and are drawing the upper and lower template of compacting and are moving along polymer-extruded direction;
After mould press moves to desired location, it is stop motion, lift rotates backward, traction cope match-plate pattern separates with lower bolster and makes the polymer matrix film demoulding, after the polymer matrix film demoulding, moves forward and collected by traction wind-up roll under the traction of traction wind-up roll; Now driving mechanism rotates backward, and drives slide block driving whole mould bases to do along the opposite direction of polymer-extruded direction along guide rail and moves, and promotes imprinting apparatus and is returned to home position, enters the next impression cycle;
Be consistent in the reciprocating motion speed of moulding process middle plateform imprinting apparatus and the speed of traction wind-up roll, and in reciprocating motion process, impress pressure and remain unchanged.
6. processing method according to claim 5, is characterized in that: the pressure limit in described step D is between 1-50KN, and the speed of traction wind-up roll is controlled at 0.5-5m/s.
7. processing method according to claim 5, it is characterized in that: in described step D, driving mechanism rotates backward, the return translational speed while driving slide block driving whole mould bases to do to move along the opposite direction of polymer-extruded direction along guide rail be moulding process translational speed 3-10 doubly.
8. processing method according to claim 5, is characterized in that: the polymer surfaces heating means in described step C are flame heating.
9. processing method according to claim 5, is characterized in that: described polymer matrix film is PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer; Or
Described polymer matrix film is the blend polymer of at least two kinds of formations in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer; Or
Described polymer matrix film is the composite that at least one and the inorganic material in PMMA, PC, PS, PP, PET, PA, PPS thermoplastic polymer forms;
Described polymer matrix film is single sheet or is multi-layer co-extruded sheet material.
10. processing method according to claim 5, is characterized in that: described upper and lower template is respectively equipped with hot flow path separately, and the distribution of hot flow path adopts S type to distribute to ensure the uniformity of die plate temperature.
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