CN101080717A - Injection molding simulation apparatus and method of injection molding simulation - Google Patents
Injection molding simulation apparatus and method of injection molding simulation Download PDFInfo
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- CN101080717A CN101080717A CNA2005800434866A CN200580043486A CN101080717A CN 101080717 A CN101080717 A CN 101080717A CN A2005800434866 A CNA2005800434866 A CN A2005800434866A CN 200580043486 A CN200580043486 A CN 200580043486A CN 101080717 A CN101080717 A CN 101080717A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/7693—Measuring, controlling or regulating using rheological models of the material in the mould, e.g. finite elements method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/22—Moulding
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
There is provided an apparatus comprising a metal mold condition collecting unit for collection of metal mold configuration with respect to metal mold (10) defining cavity (18), heating conditions for heating of the metal mold (10) and cooling conditions for cooling of the metal mold (10); metal mold simulation unit (3) for computing of a cavity surface temperature with respect to the surface of cavity (18) on the basis of metal mold configuration, heating conditions and cooling conditions; a resin condition collecting unit for collection of the properties of resin (31); and resin simulation unit (5) for computing the behavior of resin (31) upon injection of the resin (31) in the cavity (18) on the basis of properties and cavity surface temperature and for computing the aspect of item molded from the resin (31) having been injected in the cavity (18) on the basis of the behavior of the resin (31). This injection molding simulation apparatus and relevant method of injection molding simulation would realize accurate simulation of the aspect of molded item obtained by cooling of the resin (31) having been injected in heated metal mold (10).
Description
Technical field
The present invention relates to injection molding simulation apparatus and method of injection molding simulation, particularly injection molding simulation apparatus and the method for injection molding simulation that when the shape of the metal die that is designed for injection molded, operating condition, utilizes.
Background technology
Molten resin injection is filled in the metal die die cavity, and to make its cooling be known with the injection molded that forms molded article.In injection molded, from the injection of plasticity molten resin is filled into 1 cycle that forms injection molded in the die cavity to the operation of taking out molded article.In nearest injection molded, sometimes use also that following metal die heats rapidly, the quench cooled operation: make in advance after the surface temperature of die cavity is warming up to for example about 100 ℃, the plasticity molten resin is filled in injection, and makes the metal die quench cooled after filling.
Like this,, therefore, reduce resin flows speed, still resin can be filled in the die cavity even be set at low injection pressure owing to when the die cavity temperature is heated up, can postpone to be expelled to the curing of the resin in the die cavity.In addition, though arriving the resin on die cavity surface is absorbed heat and begins curing by the die cavity surface, but because the temperature on die cavity surface can raise, thereby postponed the beginning of solidifying, as a result, can be more critically the shape on die cavity surface (trickle concavo-convex, minute surface, shrinkage pattern etc.) be transferred on the ester moulding products.In this injection molded, comprise heating process rapidly, it is elongated to suppress forming period by the quench cooled operation.
Fig. 1 is illustrated in the metal die that uses in the injection molded of heating, the quench cooled operation rapidly that adopt metal die.Metal die 110 comprises mobile side metal die 111 and fixation side metal die 112.Fixation side metal die 112 is fixed on the housing (not shown) of injection molding machine.Mobile side metal die 111 can be bearing on the housing (not shown) to fixation side metal die 112 with advancing and retreat.
Mobile side metal die 111 comprises outer mold 114 and inner mould 115.Externally be formed with recess in the mould 114, inner mould 115 is configured in the recess that is formed on the outer mold 114 and is supported.In inner mould 115, be formed with a plurality of grooves on the surface that contacts with outer mold 114, by outer mold 114 supporting inner moulds 115 time, these grooves form a plurality of streams 121.Externally in the mould 114, also be formed with not shown upstream side stream and downstream stream.The upstream-side-end that its upstream side stream makes stream 121 and the suction side of external heating heat eliminating medium supply source (not shown) link to each other with either side in discharging side, and the end of downstream side that its downstream stream makes stream 121 and the discharge side of external heating heat eliminating medium supply source link to each other with either side in the suction side.
Fixation side metal die 112 comprises outer mold 116 and inner mould 117.Externally be formed with recess in the mould 116, inner mould 117 is configured in the recess that is formed on the outer mold 116 and is supported.In inner mould 117, be formed with a plurality of grooves on the surface that contacts with outer mold 116, when inner mould 117 was bearing in outer mold 116, these grooves formed a plurality of streams 122.Externally in the mould 116, also be formed with upstream side stream and downstream stream (not shown).The upstream-side-end that its upstream side stream makes stream 122 and the discharge side of external heating heat eliminating medium supply source (not shown) link to each other with either side in the suction side, and the end of downstream side that its downstream stream makes stream 122 and the suction side of external heating heat eliminating medium supply source link to each other with either side in discharging side.
The surface that does not contact with outer mold 114 at inner mould 115 is formed with recess, also is formed with recess on the surface that does not contact with outer mold 116 of inner mould 117.When mobile side metal die 111 fitted tightly with fixation side metal die 112, these recesses formed die cavity 118.In metal die 110, also be formed with cast gate (not shown).Die cavity 118 is communicated with the injection cylinder (not shown) of injection molding machine by this cast gate.
Use the injection molding machine of metal die 110 to comprise plasticization mechanism, injection mechanism, clamping and heating cooling body (all not shown).Plasticization mechanism, fusion is as the plastic resin of raw material and generate molten resin.Injection mechanism will inject die cavity 118 by the molten resin that plasticization mechanism generates.Clamping makes mobile side metal die 111 to fixation side metal die 112 advance and retreat, and can make mobile side metal die 111 and fixation side metal die 112 matched moulds.The heating cooling body, have the Cold water supply source that generates cold water, the hot water supply source that generates hot water and the valve (not shown) that a side in this cold water or the hot water is supplied to stream 121,122, cold water is flowed and to cooling off on the surface of die cavity 118 in stream 121,122, and hot water is flowed in stream 121,122 and the surface of die cavity 118 is heated.
Fig. 2 has represented to use the injection molding method of metal die 110, and expression supplies to the temperature variation of the heated cooling medium (water) in the stream 121,122.In this injection molding method, repeat the resin material fusion, and its injection is filled in the die cavity, cool off and form 1 cycle Δ t of the injection molded before taking out behind the molded article.Δ t4 during Δ t2, metal die cooling period Δ t3 and molded article took out during 1 cycle Δ t of injection molded comprised metal die Δ t1 between the period of heating, resin and fills.At metal die Δ t1 between the period of heating, supply with 160 ℃ hot water by the heating cooling body to stream 121,122, thereby the die cavity surface of die cavity 118 is heated.Δ t2 during resin is filled will be filled into die cavity 118 by the molten resin injection that plasticization mechanism generates by injection mechanism.At metal die cooling period Δ t3, supply with 20 ℃ cold water by the heating cooling body to stream 121,122, thereby the die cavity surface of die cavity 118 is cooled off.Δ t4 during molded article takes out; by clamping mobile side metal die 111 is moved to the direction away from the fixation side metal die; die sinking and take out molded articles thus from die cavity 118; after taking out molded article; mobile side metal die 111 is moved to fixed side mold 112, thereby make mobile side metal die 111 and fixed side mold 112 mold closings, matched moulds and prepare the next injection molded cycle.
The heating cooling body, with hot water or cold water sustainable supply to stream 121,122.That is, the heating cooling body is supplied with hot water at metal die Δ t2 during Δ t1 and resin are filled between the period of heating to stream 121,122; And during metal die cooling period Δ t3 and molded article take out Δ t4, to stream 121,122 feeding cold waters.
According to this injection molding method, injection is filled into molten resins in the die cavity 118 and is cooled after its surface fully fits tightly with die cavity 118 surfaces and solidifies.Therefore, the die cavity surface configuration of the surface configuration of molded article and die cavity 118 is similar.For example, when being formed with trickle concaveconvex shape on the surface of die cavity 118, the concaveconvex shape that this is trickle is transferred as the surface configuration of molded article.When the surface of die cavity 118 was minute surface, the surface of molded article just formed minute surface.Wish to design metal die, the injection molded condition that can more critically the surface configuration of die cavity 118 be transferred to the surface accurate transfer printing of molded article.
Disclosed various method of injection molding simulation, in these methods, obtained the temperature history of metal die in the forming technology by numerical analysis, perhaps, the deflection of the temperature history of ester moulding products, bending, contraction etc. in the prediction refrigerating work procedure.
Open in the flat 05-322812 communique the spy, a kind of heat transfer coefficient computing method of injection mold assembly tool are disclosed, this method can be determined local different heat transfer coefficient, and can consider that temperature sensor from the influence of the boundary separation between itself and the feeding medium and from the influence of the exothermic phenomenon of outer wall, calculates heat transfer coefficient.In the heat transfer coefficient computing method of this injection mold assembly tool, to the heat interchange of in metal die temperature deployment tube, carrying out, consider from the exothermic phenomenon of metal die outer wall and carry out numerical analysis and experiment, can calculate the heat transfer coefficient of metal die thus by this numerical analysis and experimental technique.
Open in the flat 06-262635 communique the spy, disclose in the shaping of crystallinity Plastic Forming goods, can obtain the establishing method of the molding condition in the crystallinity Plastic Forming goods of best molding condition.The establishing method of the molding condition in these crystallinity Plastic Forming goods is as follows: by nucleus being produced in speed formula, the spherulitic growth speed formula substitution Avrami formula, as the function of time and temperature and obtain the crystalline growth speed of resin, and obtain resin temperature in the side metal die by methods such as simulations, as the function of time, obtain the aggregate-value of crystallinity from the two.Thus, make metal die temperature, resin temperature, cooling curing time reach best.
Open in the flat 07-282123 communique the spy, disclose a kind of temperature analysis method of metal die, this method can effectively shorten the required time of numerical evaluation, and can carry out accurate temperature analysis.In the temperature analysis method of this metal die,, the temperature of each several part is analyzed by numerical evaluation according to the analytical model of the metal die that constitutes by aggregate with the netted polygon key element of cutting apart.Setting the width of cutting apart of the polygon key element that constitutes each several part accordingly with the shape of metal die etc., and the width of cutting apart according to this polygon key element changes each physics value use in above-mentioned numerical evaluation, utilizes each physics value after this change to carry out the temperature analysis of above-mentioned metal die model.
Open in the flat 10-278085 communique the spy, temperature history prediction unit in a kind of injection molded technology is disclosed, this device is not divided into small key element with metal die inside, but be key element with the surface segmentation of metal die, thereby the molded article in the prediction forming technology, the temperature history of metal die can shorten computing time.Temperature history prediction unit in this injection molded technology is by the molded article of numerical analysis prediction injection molded technology and the temperature history of metal die.Molded article portion is divided into small key element, and by numerical computation methods solution non-steady heat transfer problems such as the limited factors method of employing, method of difference, finite volume method, border factors method, thereby can corresponding each key element calculate from the average heat of molded article to 1 cycle of the die cavity surface discharge of metal die.Metal die portion is divided into small key element, as boundary condition each key element at metal die die cavity face, the molded article of each key element that calculates by above-mentioned the 1st calculating part is to the average heat in 1 cycle of metal die discharging, coolant temperature is given on surface at cooling tube, the coefficient of overall heat transmission between heat eliminating medium and the metal die, give and atmospheric temperature in the metal surface that contacts with extraneous air, the coefficient of overall heat transmission between extraneous air and the metal die, and employing border factors method, limited factors method, finite volume method, numerical computation methods such as method of difference solve the steady heat transfer problem, calculate the temperature and the hot-fluid speed of metal die thus.According to the boundary condition of being imported and the Temperature Distribution that draws by above-mentioned the 2nd calculating part, hot-fluid speed, can calculate and convert the coefficient of overall heat transmission between the distance from the die cavity surface to cooling tube and heat eliminating medium and the cooling tube to the equivalence distance of one-dimensional model, the coefficient of overall heat transmission of equal value.The equivalence distance that utilization is obtained, the coefficient of overall heat transmission of equal value, with molded article and metal die from the die cavity surface to cooling tube, on the thickness of slab direction, be divided into the small key element of one dimension, solve the non-steady heat transfer problem repeatedly by the numerical evaluation of using limited factors method or method of difference, finite volume method, calculate the molded article in the injection molded processing technology and the temperature history of metal die thus.
Open in the flat 10-278089 communique the spy, disclose a kind of analogy method of injection molded technology, this method can and be analyzed the deflection that the activity duration calculates the ester moulding products that causes as the bending under the end-state of ester moulding products, contraction etc. with still less investment.In the analogy method of the injection molded technology of this resin component, generate shape according to the shape data of metal die and resin component, and shape is divided into a plurality of small key elements.The design parameter of input resin component is obtained the inflow entrance that will flow into metal die from resin and is arrived the arrival parameter (x) of each key element above-mentioned a plurality of small key element as the function of function of the resin temperature of variable (t=f[x]) and resin pressure (p=g[x]).According to arrival parameter, resin temperature, resin pressure and the function in previous operation, obtained, the above-mentioned resin temperature in the expression metal die and the dispersion value of resin pressure.According to the dispersion value of resin temperature and resin pressure, the design parameter of being imported is carried out.
Open in the flat 2000-289076 communique the spy, disclose a kind of ester moulding simulation method that improves the dynamic precision of prediction of physics of resin in the forming process.In this ester moulding simulation method, the heat transfer phenomenon in the metal die in the resin injection molded process is simulated, and calculated the Temperature Distribution of metal die.According to the Temperature Distribution of the metal die that calculates, the correlationship figure with reference between metal die temperature and the interface heat transfer rate calculates the interface heat transfer rate.To from beginning to be filled to dynamically simulating of molten resin during the demoulding, the timeliness that calculates resin pressure and resin temperature changes, thereby stress and distortion that the injection molded goods reach before the normal temperature are simulated.Prediction flexural deformation and drawdown deformation, and export the timeliness variation of the metal die Temperature Distribution, resin pressure and the resin temperature that calculate, the flexural deformation and the drawdown deformation of injection molded goods.
Open in the 2003-326581 communique the spy, disclose obtain deflection that resin shrinkage causes in allowable value with the method for interior cooling condition and the method for obtaining needed cooling condition when timeliness changed the deflection that causes and be controlled in the allowable value.In based on the mould of the injection molded goods of this shrinkage factor in the Forecasting Methodology of cooling condition, temperature and the resin pressure of molded article, the part of predicted temperature and the viscoelastic property of the molded article in the interior cooling of mould of considering molded article, metal die carry out stress simulation, and the unrelieved stress in the prediction mould, thereby the stress in the phenomenon of molded article disengaging metal die is simulated.Consider that molded article reaches the temperature of atmospheric temperature molded article before and the stress simulation of viscoelastic property, and consider that reaching atmospheric temperature to the viscoelastic property through the molded article the atmosphere till the fixed time from molded article carries out stress simulation.For cooling condition, obtain and be used for that timeliness is changed the shrinkage factor cause and be controlled at allowable value required cooling condition when following.
Wanting to obtain the ester moulding products that forms by injection molded by mathematical analysis, temperature history in (cooling) operation that is shaped, and accurately prediction is crooked, under the situation of the deflection of contraction etc., need be except the heating medium of the adjustment stream in the metal die of considering to be subjected to flow through or the influence (heating of metal die of heat eliminating medium, cooling) in addition, the surface temperature distribution of die cavity is analyzed in the influence of also considering to be expelled in the metal die and arriving the heat that resin had on die cavity surface, course, and, distribution with the die cavity surface temperature that analyzes like this, course is the basis, analyze the temperature history of the ester moulding products in the forming technology (refrigerating work procedure), and prediction is crooked, the deflection that shrinks etc. promptly needs to carry out the numerical analysis in conjunction with metal die analysis and molded article analysis both sides.
Summary of the invention
Problem of the present invention is, the injection molding simulation apparatus and the method for injection molding simulation that calculate the shape of the molded article that forms by injection molded in conjunction with metal die analysis and molded article analysis are provided.
Another problem of the present invention is, the injection molding simulation apparatus and the method for injection molding simulation that calculate the shape of the molded article that forms by injection molded in conjunction with metal die analysis and molded article analysis more exactly are provided.
Another problem of the present invention is, the injection molding simulation apparatus and the method for injection molding simulation of the shape that can calculate the molded article that forms by injection molded rapidlyer is provided.
Another problem of the present invention is, the injection molding simulation apparatus and the method for injection molding simulation that can more accurately also more promptly calculate the shape of the molded article that forms by injection molded are provided.
In viewpoint of the present invention, injection molding simulation apparatus, comprise: metal die conditional capture portion, collect the metal die shape of the metal die be formed with die cavity, the heating condition that metal die is heated and the cooling condition that metal die is cooled off; The metal die simulation part according to metal die shape, heating condition and cooling condition, calculates the surface temperature of die cavity; Resin condition collection unit is collected the character that injection is filled into the resin in the die cavity; With the resin simulation part, according to the character and the die cavity surface temperature of resin, the resin when calculating resin injection in die cavity dynamically, and according to this resin dynamically, calculate the shape of the molded article that forms by the resin that is expelled to die cavity.This injection molding simulation apparatus can simulate being expelled to that resin in the metal die after the heating cools off and the shape of the molded article that forms.Resin is being filled into just being cooled of die cavity midway, can bring influence to the shape of molded article.According to this calculating, injection molding simulation apparatus can calculate the shape of molded article more exactly.
Preferably, the metal die simulation part goes out the die cavity surface temperature according to the dynamic calculation of resin.The die cavity surface also can be heated by resin.According to this calculating, injection molding simulation apparatus can calculate the die cavity surface temperature more exactly.
What preferably, the metal die simulation part was independent of resin dynamically calculates the die cavity surface temperature.Generally speaking, the specific heat of metal die is much larger than resin, and for the die cavity surface temperature, the dynamic calculation that can be independent of resin goes out the die cavity surface temperature.And then preferably, this injection molding simulation apparatus dynamically comes more promptly to calculate the die cavity surface temperature by binding resin.
The die cavity surface temperature is represented the die cavity surface temperature in a plurality of moment.At this moment, and then preferably, the metal die simulation part further goes out the die cavity surface temperature according to the dynamic calculation in the moment of extracting from a plurality of moment in should be dynamically.This injection molding simulation apparatus, dynamic calculation by binding resin goes out the die cavity surface temperature, can promptly calculate, and dynamically calculate the die cavity surface temperature by what be independent of resin, the die cavity surface temperature can be calculated more exactly, the shape of molded article can be calculated more exactly.
Preferably, the metal die simulation part to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate the die cavity surface temperature.And then preferably, the metal die simulation part is divided into many parts with the inject all resins of filling, and the resin filling work procedure of the resin of each amount of being cut apart in the instantaneous filling of each particular moment is carried out modelling, thereby calculates the die cavity surface temperature.
Metal die simulation part and then calculate the deflection of die cavity surface deformation.This moment, preferably the resin simulation part calculated the shape of molded article further according to the deflection on die cavity surface.The die cavity surface is out of shape because of heat.The shape of molded article can influence the distortion on die cavity surface.According to this calculating, injection molding simulation apparatus can calculate the shape of molded article more exactly.
Resin simulation part and then calculate by resin and be applied to the lip-deep pressure distribution of die cavity.This moment, preferably metal die further went out deflection according to calculation of pressure distribution.The die cavity surface is because of further distortion of pressure.According to this calculating, injection molding simulation apparatus can calculate the shaping shape of products more exactly.
Injection molded simulator program of the present invention is the computer program by carrying out as the injection molding simulation apparatus of computing machine, as this computer program part, it comprises: the step of heating condition that collect the metal die shape of the metal die be formed with die cavity, metal die is heated and cooling condition that metal die is cooled off; According to metal die shape, heating condition and cooling condition, calculate the step of the surface temperature of die cavity; Collect the step of injecting the character that is filled into the resin in the die cavity; With character and die cavity surface temperature according to resin, the resin when calculating resin injection in die cavity dynamically, and according to this resin dynamically, calculate the step of the shape of the molded article that forms by the resin that is expelled to die cavity.At this moment, can simulate and be heated that resin cools off and the shape of the molded article that forms what be expelled to metal die.Resin just is cooled in being filled into the way of die cavity, can bring influence to the shape of molded article.According to this calculating, can calculate the shape of molded article more exactly.
Preferably, further calculate the die cavity surface temperature according to the dynamic quilt of resin.The die cavity surface also can be heated by resin.According to this calculating, can calculate the die cavity surface temperature more exactly.
What preferably, be independent of resin dynamically calculates the die cavity surface temperature.Generally speaking, the specific heat of metal die is much larger than resin, and what can be independent of resin dynamically calculates the die cavity surface temperature.And then preferably, dynamically come more promptly to calculate the die cavity surface temperature by binding resin.
The die cavity surface temperature is represented the die cavity surface temperature in a plurality of moment, and preferably, further the dynamic calculation according to the moment of extracting from a plurality of moment in should be dynamically goes out the die cavity surface temperature.At this moment, dynamic calculation by binding resin goes out the die cavity surface temperature, can promptly calculate, and dynamically calculate the die cavity surface temperature by what be independent of resin, the die cavity surface temperature can be calculated more exactly, the shape of molded article can be calculated more exactly.
Preferably, to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate the die cavity surface temperature.And then preferably, the inject all resins of filling is divided into many parts, and to the resin filling work procedure implementation modelization of the resin of each amount of being cut apart in the instantaneous filling of each particular moment, thereby calculate the die cavity surface temperature.
Injection molded simulator program of the present invention further has the step of the deflection that calculates the die cavity surface deformation.Preferably further calculate the shape of molded article this moment according to deflection.The die cavity surface is out of shape because of heat.The shape of molded article can influence the distortion on die cavity surface.According to this calculating, can calculate the shaping shape of products more exactly.
Injection molded simulator program of the present invention further has calculating is applied to the lip-deep pressure distribution of die cavity by resin step.Preferably further go out deflection according to calculation of pressure distribution this moment.The die cavity surface is because of further distortion of pressure.According to this calculating, can calculate the shape of molded article more exactly.
Method of injection molding simulation of the present invention comprises: the step of heating condition that collect the metal die shape of the metal die be formed with die cavity, metal die is heated and cooling condition that metal die is cooled off; According to metal die shape, heating condition and cooling condition, calculate the step of the surface temperature of die cavity; Collect the step of injecting the character that is filled into the resin in the die cavity; With character and die cavity surface temperature according to resin, the resin when calculating resin injection in die cavity dynamically, and according to this resin dynamically, calculate the step of the shape of the molded article that forms by the resin that is expelled to die cavity.At this moment, can simulate being expelled to that resin in the metal die after the heating cools off and the shape of the molded article that forms.Resin just is cooled in being filled into the way of die cavity, can bring influence to the shape of molded article.According to this calculating, can calculate the shape of molded article more exactly.
Preferably, further go out the die cavity surface temperature according to the dynamic calculation of resin.The die cavity surface also can be heated by resin.According to this calculating, can calculate the die cavity surface temperature more exactly.
What preferably, be independent of resin dynamically calculates the die cavity surface temperature.Generally speaking, the specific heat of metal die is much larger than resin, and what can be independent of resin dynamically calculates the die cavity surface temperature.And then preferably, dynamically come more promptly to calculate the die cavity surface temperature by binding resin.
The die cavity surface temperature is represented the die cavity surface temperature in a plurality of moment, and preferably, further the dynamic calculation according to the moment of extracting from a plurality of moment in should be dynamically goes out the die cavity surface temperature.At this moment, dynamic calculation by binding resin goes out the die cavity surface temperature, can promptly calculate, and dynamically calculate the die cavity surface temperature by what be independent of resin, the die cavity surface temperature can be calculated more exactly, the shape of molded article can be calculated more exactly.
Preferably, to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate the die cavity surface temperature.And then preferably, all resins that injection is filled is divided into many parts, and to the resin filling work procedure implementation modelization of the resin of each amount of being cut apart in the instantaneous filling of each particular moment, thereby calculate the die cavity surface temperature.
Method of injection molding simulation of the present invention further has the step of the deflection that calculates the die cavity surface deformation.Preferably further calculate the shape of molded article this moment according to the deflection of die cavity.The die cavity surface is out of shape because of heat.The shape of molded article can influence the distortion on die cavity surface.According to this calculating, can calculate the shape of molded article more exactly.
Method of injection molding simulation of the present invention further has calculating is applied to the lip-deep pressure distribution of die cavity by resin step.Preferably further go out deflection according to calculation of pressure distribution this moment.The die cavity surface is because of further distortion of pressure.According to this calculating, can calculate the shape of molded article more exactly.
The manufacture method of metal die of the present invention is the method for producing metal die, preferably includes: the step of carrying out method of injection molding simulation of the present invention; When the shape of molded article is not suitable for, change the step of metal die shape; With when the molded article shape is fit to, make the step of the real metal die that satisfies the metal die shape.
Injection molding method of the present invention is the method for producing molded article, preferably includes: the step of method of injection molding simulation of the present invention; When the molded article shape is not suitable for, change the step of heating condition and cooling condition; With when the molded article shape is fit to, utilize the real metal die that satisfies the metal die shape, satisfy the step that heating condition and cooling condition ground carry out injection molded.
Description of drawings
Fig. 1 is the perspective cut-away schematic view of the existing metal die of expression.
Fig. 2 is the chart of the temperature variation of chilled water in the existing injection molded of expression.
Fig. 3 is the perspective cut-away schematic view that is illustrated in the metal die that uses in the injection molded of the present invention
Fig. 4 is the chart of the temperature variation of the chilled water in the expression injection molded of the present invention.
Fig. 5 is the skeleton view that expression is filled into the molten resin in the die cavity.
Fig. 6 is the block diagram of the injection molding simulation apparatus of expression the present invention the 1st embodiment.
Fig. 7 is illustrated in the process flow diagram that designs the action of metal die and operating condition among the present invention the 1st embodiment.
Fig. 8 is the process flow diagram that is illustrated in the action of checking operating condition among the present invention the 1st embodiment.
Fig. 9 is the process flow diagram that is illustrated among the present invention the 1st embodiment the action of dynamically simulating on the die cavity surface of metal die.
Figure 10 is the process flow diagram that is illustrated among the present invention the 1st embodiment the action of dynamically simulating of resin.
Embodiment
Describe with reference to the injection molding simulation apparatus of accompanying drawing the embodiment of the invention.As shown in Figure 3, the metal die 10 as the simulated object of this injection molding simulation apparatus is made of mobile side metal die 11 and fixation side metal die 12.Fill the plasticity molten resin material in injection, and make its cooling and form in the injection molding machine of molded article, use metal die 10.Fixation side metal die 12 is fixed on the housing (not shown) of injection molding machine.Mobile side metal die 11 can be supported on the housing (not shown) to fixation side metal die 12 with advancing and retreat.
Mobile side metal die 11 comprises outer mold 14 and inner mould 15.Externally be formed with recess on the mould 14, inner mould 15 is configured in the recess that is formed on the outer mold 14 and is supported.In inner mould 15, be formed with a plurality of grooves on the surface that contacts with outer mold 14, when being bearing in inner mould 15 on the outer mold 14, these grooves form a plurality of streams 21.Externally also be formed with upstream side stream and downstream stream (not shown) in the mould 14.Its upstream side stream makes the upstream side of stream 21 link to each other with the discharge side of external heated heat eliminating medium supply source (not shown) or the either side in the suction side, and its downstream stream makes the downstream side of stream 21 link to each other with the discharge side of the heated cooling medium supply source of said external or the opposite side in the suction side.
Fixation side metal die 12 comprises outer mold 16 and inner mould 17.Externally be formed with recess in the mould 16, inner mould 17 is configured in the above-mentioned recess that is formed on the outer mold 17 and is supported.In inner mould 17, be formed with a plurality of grooves on the surface that contacts with outer mold 16, when inner mould 17 was bearing in outer mold 16, these grooves formed a plurality of streams 22.Externally in the mould 16, also be formed with upstream side stream and downstream stream (not shown).Its upstream side stream makes the upstream side of stream 22 link to each other with the discharge side of external heated heat eliminating medium supply source (not shown) or the either side in the suction side, and its downstream stream makes the downstream side of stream 22 link to each other with the discharge side of the heated cooling medium supply source of said external or the opposite side in the suction side.
The surface that does not contact with outer mold 14 at inner mould 15 is formed with recess, also forms recess on the surface that does not contact with outer mold 16 of inner mould 17.When mobile side metal die 11 fitted tightly with fixation side metal die 12, these recesses formed die cavity 18.In metal die 10, also be formed with cast gate (not shown).Die cavity 18 is communicated with the injection cylinder (not shown) of injection molding machine by this cast gate.
Use the injection molding machine of metal die 10 to comprise not shown plasticization mechanism, injection mechanism, clamping and heating cooling body.Plasticization mechanism, fusion is as the plastic resin of raw material and generate molten resin.Injection mechanism will inject die cavity 18 by the molten resin that plasticization mechanism generates.Clamping makes mobile side metal die 11 open and close mould to fixation side metal die 12 advance and retreat, and can make mobile side metal die 11 and fixation side metal die 12 matched moulds.The heating cooling body, have the Cold water supply source that generates cold water, the hot water supply source that generates hot water and the valve that the side in this cold water or the hot water is supplied to stream 21,22, cold water is flowed and to cooling off on the surface of die cavity 18 in stream 21,22, and hot water is flowed in stream 21,22 and the surface of die cavity 118 is heated.
Fig. 4 represents to use the injection molding method of metal die 10, and expression supplies to the temperature variation of the heated cooling medium (water) in the stream 21,22.In this injection molding method, repeat the resin material fusion, and its injection is filled in the metal die die cavity, cool off and form 1 cycle Δ t of the injection molded before taking out behind the molded article.Δ t4 during Δ t2, metal die cooling period Δ t3 and molded article took out during 1 cycle Δ t of injection molded comprised metal die Δ t1 between the period of heating, resin and fills.At metal die Δ t1 between the period of heating, supply with hot water by the heating cooling body to stream 21,22, thereby the die cavity surface of die cavity 18 is heated.Δ t2 during resin is filled will be filled into die cavity 18 by the molten resin injection that plasticization mechanism generates by injection mechanism.At metal die cooling period Δ t3, by the heating cooling body to stream 21,22 feeding cold waters, thereby the die cavity surface of die cavity 118 is cooled off.Δ t4 during molded article takes out; by clamping mobile side metal die 11 is moved to the direction away from fixation side metal die 12; die sinking and take out molded articles thus from die cavity 18; after taking out molded article; mobile side metal die 11 is moved to fixed side mold 12, thereby make mobile side metal die 11 and fixed side mold 12 mold closings, matched moulds and prepare the next injection molded cycle.
The heating cooling body, with hot water or cold water sustainable supply to stream 21,22.That is, the heating cooling body metal die during Δ t1 and resin are filled between the period of heating Δ t2 supply with hot water to stream 21,22; And during metal die cooling period t3 and molded article take out Δ t4 to stream 21,22 feeding cold waters.
Fig. 5 represent to be expelled to resin in the die cavity 18 dynamically.By being formed at the cast gate 33 on the metal die 10, this resin 31 is expelled in the die cavity 18.The surface of this resin 31 is formed with the surface of contact 34 that contacts with the die cavity surface by the fusion anterior 32 that did not contact with the die cavity surface of die cavity 18 before resin 31 is filled into die cavity 18.When being expelled to resin 31 in the die cavity 18 by cast gate 33, move away from the zone of cast gate 33 in the die cavity surface in zone near cast gate 33 from the die cavity surface, fusion front portion 32, the final disappearance.The area of surface of contact 34 is expelled to die cavity 18 along with resin 31 and increases, and is final consistent with the die cavity surface.Resin 31 from surface of contact 34 to metal die 10 heat releases.
Fig. 6 represents injection molding simulation apparatus of the present invention.This injection molding simulation apparatus 1 is the signal conditioning package (computing machine) that comprises not shown CPU, memory storage, input media and output unit.As this signal conditioning package, for example a guy's computing machine, workstation.Input media for example has reading device, the keyboard of recording medium for operated the device that the information that will generate is input to injection molding simulation apparatus 1 by the user.As output unit, display, printer are for example arranged.In this injection molding simulation apparatus 1, metal die conditional capture portion 2, metal die simulation part 3, resin condition collection unit 4 and resin simulation part 5 are realized by computer program.
The metal die condition that the user utilizes this input media input is collected from input media by metal die conditional capture portion 2.This metal die condition is represented the structure and the operating condition of metal die.The structure of above-mentioned metal die is represented the shape of die cavity 18, the section shape of stream 21,22 and the layout of stream 21,22.Above-mentioned operating condition comprises heating condition and cooling condition.This heating condition is represented temperature and the flow by the hot water of stream 21,22 supplies.This cooling condition is represented temperature and the flow by the cold water of stream 21,22 supplies.
Metal die simulation part 3, the metal die condition according to collecting by metal die conditional capture portion 2 forms the mathematical model of metal die 10, and utilizes this calculated with mathematical model to go out Temperature Distribution, temperature variation and the thermal deformation on die cavity surface.Temperature Distribution is represented the temperature with a certain moment of a plurality of tiny areas of the die cavity surface segmentation one-tenth of die cavity 18 respectively.Temperature variation is represented the temperature of each tiny area in a plurality of moment of the time being divided with specific time interval.Thermal deformation is illustrated in the amount of movement of this tiny area in above-mentioned a plurality of moment.As this numerical computation method, carry out Calculation Method, for example limited factors method, method of difference, finite volume method, border factors method etc. after for example having example that metal die 10 is divided into small key element.At this moment, metal die simulation part 3 does not use the result who is calculated by resin simulation part 5 and works alone.
Resin condition collection unit 4 is collected the resin condition that the user utilizes the input media input from input media.This resin condition represents to be expelled to the rerum natura and the molding condition of the resin in the die cavity 18.This rerum natura is expressed the viscosity characteristics of demonstration viscosity at each temperature and is shown the PVT characteristic of the relation of the coefficient of overall heat transmission and pressure, volume, temperature.This molding condition is represented the position of cast gate 33 and with the injection speed of resin injection in die cavity 18 and the resin temperature when being expelled in the die cavity 18.
The embodiment of metal die manufacture method of the present invention has the action of design metal die and operating condition and the action of checking operating condition.
Fig. 7 represents to design the action of metal die and operating condition.The deviser suitably designs the structure and the operating condition (step S1) of metal die at first according to the shape of target molded article.The deviser is input to injection molding simulation apparatus 1 with the structure and the operating condition of designed this metal die that goes out, and the resin condition that will form the resin of target molded article is input to injection molding simulation apparatus 1.Injection molding simulation apparatus 1, according to the information of being imported, to metal die dynamically and dynamically the simulating of resin, thereby calculate the shape (step S2) of molded article.(step S3 when the shape of the molded article that calculates and the error between the target shape exceed permissible range and be not suitable for, not), the deviser is with reference to the shape of the molded article that calculates, the shape and the operating condition of redesign metal die are so that molded article forms target shape (step 4S1).The action of repeated execution of steps S1, S2 is contained in the permissible range until the shape of the molded article that calculates and the error packet between the target shape.
Fig. 8 comprises the action of verifying operating condition.The deviser makes metal die (step S10) according to the structure of the metal die that the action design by Fig. 7 goes out.The operating condition that the deviser also goes out according to the action design by Fig. 7 utilizes this metal die to carry out injection molded (step S11).The deviser measures the shape of the molded article of formed thereby, judges whether the shape and the error between the target shape of the molded article of formed thereby exceeds permissible range (step S12).
(step S12, not), the deviser changes operating condition so that error does not exceed permissible range (step S13) when error exceeds permissible range.When the deviser judges that this error of change by operating condition must not can exceed permissible range (step S14, not), the operation of execution graph 5, the shape and the operating condition of redesign metal die are to prevent to produce defective (step S15).
According to this metal die manufacture method, can design the shape of molded article of formed thereby and structure and the operating condition that the error between the target shape can not exceed the metal die of permissible range easier and more reliably.
The embodiment of injection molding method of the present invention is formed by following action: in the action of Fig. 7, the metal die that the structure of the metal die of designing when the shape of the molded article that the utilization basis calculates and the error packet between the target shape are contained in the permissible range is made, and satisfy the operating condition ground that designs this moment and carry out injection molded.According to this injection molding method, molded article forms target shape easily, thereby preferred.This injection molding method can also satisfy the operating condition ground of designing and carry out injection molded in the action of Fig. 6, thereby can make molded article form target shape easier and more reliably.
The embodiment of method of injection molding simulation of the present invention is carried out by injection molding simulation apparatus 1 of the present invention, and it is the processing of the step S2 in the action shown in Fig. 7.This method of injection molding simulation has to the action of dynamically simulating on the die cavity surface of metal die with to the action of dynamically simulating of resin.
Fig. 9 represents the action of dynamically simulating to the die cavity surface of metal die.At first, the structure and the operating condition of this metal die that will design of deviser are input to injection molding simulation apparatus 1 (step S21).Injection molding simulation apparatus 1 generates the mathematical model of metal die 10, and utilizes this calculated with mathematical model to go out Temperature Distribution, temperature variation and the thermal deformation (step S22) on die cavity surface according to the structure and the operating condition of this metal die.This Temperature Distribution represents to cut apart the temperature in a certain moment of a plurality of tiny areas on the die cavity surface of die cavity 18 respectively.Temperature variation is represented the temperature of each tiny area in a plurality of moment of the time being divided with specific time interval.The amount of movement of this tiny area in above-mentioned a plurality of moment represented in thermal deformation.
Figure 10 represents the action of dynamically simulating to resin.At first, deviser's resin condition that will form the resin of target molded article is input to injection molding simulation apparatus 1 (step S31).This resin condition represents to be expelled to the rerum natura and the molding condition of the resin of die cavity 18.This rerum natura has been represented to show the viscosity characteristics of viscosity at each temperature and has been shown the PVT characteristic of the relation of the coefficient of overall heat transmission and pressure, volume, temperature.This molding condition represents the position of cast gate 33, with the injection speed of resin injection in die cavity 18 and the resin temperature when being expelled to die cavity 18.Injection molding simulation apparatus 1 is also collected Temperature Distribution, temperature variation and the thermal deformation (step S32) on the die cavity surface that the action by Fig. 9 calculates.
Injection molding simulation apparatus 1, generate the mathematical model of molten resin 31 according to the resin condition of being imported, and utilize this mathematical model, Temperature Distribution, temperature variation and the thermal deformation on the die cavity surface that calculates according to action by Fig. 9, calculate molten resin 31 dynamically and the shape (step S33) of molded article.Dynamically position, temperature, the pressure of expression a plurality of small key elements that molten resin 31 is divided into.Injection molding simulation apparatus 1 with the molten resin 31 that calculated dynamically and the shape of molded article be presented in the display, and they are printed on the paper, so that the deviser can discern (step S34).
According to this method of injection molding simulation, can simulate by to being expelled to the shape that resin 31 in the metal die 10 after the heating cools off the molded article that the injection molded that forms molded article forms.Generally speaking, the specific heat of metal die 10 is much larger than resin 31, thereby for the die cavity surface temperature, though be independent of resin 31 dynamically calculate the die cavity surface temperature, its error is also very little.According to this calculating, dynamically can more promptly calculate the die cavity surface temperature by binding resin 31.
In the 2nd embodiment of injection molding simulation apparatus of the present invention, the metal die simulation part 3 in the foregoing description is replaced by another metal die portion.This another metal die simulation part is according to the metal die condition of being collected by metal die conditional capture portion 2, generate the mathematical model of metal die 10, and, utilize this calculated with mathematical model to go out Temperature Distribution, temperature variation and the thermal deformation on die cavity surface according to the result who calculates by resin simulation part 5.That is, this metal die simulation part considers that resin 31 can heating of metal moulds 10 and calculate Temperature Distribution, temperature variation and the thermal deformation on die cavity surface.
In the 3rd embodiment of method of injection molding simulation of the present invention, injection molding simulation apparatus 1 by using this metal die simulation part is carried out, and carries out simultaneously to the action of dynamically simulating on the simulation surface of the metal die in the foregoing description and to the action of dynamically simulating of resin.Promptly, in the step S21 of the action of Fig. 9, injection molding simulation apparatus 1 is according to the structure and the operating condition of this metal die, generate the mathematical model of metal die 10, the result who calculates according to the step 33 of the action by Figure 10, utilize this mathematical model, calculate Temperature Distribution, temperature variation and the thermal deformation on die cavity surface.That is, injection molding simulation apparatus 1 is to consider that resin 31 can heating of metal moulds 10 and calculate Temperature Distribution, temperature variation and the thermal deformation on die cavity surface.
The die cavity surface also can be heated by resin 31.According to this calculating,,, can calculate the die cavity surface temperature more exactly with dynamically comparing of the die cavity surface of dynamically calculating metal die that is independent of resin though injection molding simulation apparatus 1 calculating is slower.
In the 4th embodiment of injection molding simulation apparatus of the present invention, the metal die simulation part 3 in the foregoing description is replaced by another metal die simulation part.This metal die simulation part the molten resin 31 that calculates by resin simulation part 5 dynamically in, extract in the time that will fill molten resin 31 and be divided into 1 time or repeatedly moment dynamic.This metal die simulation part should dynamically be utilized its calculated with mathematical model to go out Temperature Distribution, temperature variation and the thermal deformation on die cavity surface according to what extract.
The metal die simulation part with one in the resin 31 device that is filled in the die cavity 18, calculates Temperature Distribution, temperature variation and the thermal deformation on die cavity surface as instantaneous.Perhaps, this metal die simulation part calculates Temperature Distribution, temperature variation and the thermal deformation on die cavity surface as dividing the device that is filled into several times in the die cavity 18 by the polylith (5,6) that resin 31 is divided into.
In the 5th embodiment of method of injection molding simulation of the present invention, it is carried out by the injection molding simulation apparatus 1 of using this metal die simulation part, can carry out simultaneously in the foregoing description to the action of dynamically simulating on the simulation surface of metal die with to the action of dynamically simulating of resin.That is, in the step S21 of the action of Fig. 9, injection molding simulation apparatus 1 according to the structure and the operating condition of this metal die, generates the mathematical model of metal die 10.Injection molding simulation apparatus 1 molten resin 31 that the operation steps 33 by Figure 10 calculates dynamically in, extract in the time that will fill molten resin 31 and be divided into 1 time or repeatedly moment dynamic.Injection molding simulation apparatus 1 is dynamic according to what extracted, utilizes its calculated with mathematical model to go out Temperature Distribution, temperature variation and the thermal deformation on die cavity surface.That is, injection molding simulation apparatus 1 with a device that is filled in the die cavity 18 in the resin 31, calculates Temperature Distribution, temperature variation and the thermal deformation on die cavity surface as instantaneous.Perhaps, injection molding simulation apparatus 1 calculates Temperature Distribution, temperature variation and the thermal deformation on die cavity surface as dividing the device that is filled into die cavity 18 several times by the polylith (5,6) that resin 31 is divided into.
According to this calculating, injection molding simulation apparatus 1, compare with the dynamic situation on the die cavity surface of dynamically calculating metal die that is independent of resin, can calculate the die cavity surface temperature more exactly, and, calculate the situation of die cavity surface temperature with the physical simulation resin flow and compare, calculate faster.
According to injection molding simulation apparatus of the present invention and method of injection molding simulation, can simulate by plasticity molten resin material injection is filled in the metal die that is heated cooling, and the characteristic of the molded article that forms of the injection molded that after cooling, takes out as molded article.
Claims (23)
1. injection molding simulation apparatus, it comprises:
The metal die shape of the metal die be formed with die cavity is collected, the heating condition that described metal die is heated and the cooling condition that described metal die is cooled off by metal die conditional capture portion;
The metal die simulation part according to described metal die shape, described heating condition and described cooling condition, calculates the surface temperature of described die cavity;
Resin condition collection unit is collected the character that injection is filled into the resin in the described die cavity; With
The resin simulation part, resin when calculating described resin injection to described die cavity according to the character of described resin and described die cavity surface temperature dynamically, and go out the characteristic of the molded article that forms by the resin that is expelled in the die cavity according to the dynamic calculation of described resin.
2. injection molding simulation apparatus according to claim 1, wherein, described metal die simulation part and then go out described die cavity surface temperature according to the dynamic calculation of described resin.
3. injection molding simulation apparatus according to claim 1, wherein, described metal die simulation part is independent of the described die cavity surface temperature of dynamically calculating of described resin.
4. injection molding simulation apparatus according to claim 1, wherein, described metal die simulation part, to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate described die cavity surface temperature.
5. injection molding simulation apparatus according to claim 1, wherein, described metal die simulation part, the inject all resins of filling is divided into many parts, and the resin filling work procedure of the resin of each amount of being divided in the instantaneous filling of each particular moment carried out modelling, thereby calculate described die cavity surface temperature.
6. according to each the described injection molding simulation apparatus in the claim 1 to 5, wherein,
Described metal die simulation part and then calculate the deflection of described die cavity surface deformation;
Described resin simulation part calculates described molded article characteristic according to the deflection on described die cavity surface.
7. injection molding simulation apparatus according to claim 6, wherein,
Described resin simulation part and then calculate by described resin and be applied to the lip-deep pressure distribution of described die cavity;
Described metal die simulation part and then go out described deflection according to described calculation of pressure distribution.
8. injection molded simulator program, it comprises:
The step of heating condition that collection is formed with the metal die shape of the metal die of die cavity, heat described metal die and cooling condition that described metal die is cooled off;
According to described metal die shape, described heating condition and described cooling condition, calculate the step of the surface temperature of described die cavity;
Collect the step of injecting the character that is filled into the resin in the described die cavity; With
According to the character and the described die cavity surface temperature of described resin, calculate resin when described resin injection is in the described die cavity dynamically, and go out the step of the characteristic of the molded article that forms by the resin that is expelled to die cavity according to the dynamic calculation of described resin.
9. injection molded simulator program according to claim 8 wherein, goes out described die cavity surface temperature according to the dynamic calculation of described resin.
10. injection molded simulator program according to claim 8 wherein, is independent of the described die cavity surface temperature of dynamically calculating of described resin.
11. injection molded simulator program according to claim 8, wherein, to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate described die cavity surface temperature.
12. injection molded simulator program according to claim 8, wherein, the inject all resins of filling is divided into many parts, and the resin filling work procedure of the resin of each amount of being divided in the instantaneous filling of each particular moment is carried out modelling, thereby calculate described die cavity surface temperature.
13. each described injection molded simulator program in 12 according to Claim 8, wherein,
The step that also comprises the deflection that calculates described die cavity surface deformation;
And then calculate the shape of described molded article according to described deflection.
14. injection molded simulator program according to claim 13, wherein,
Comprise that also calculating is applied to the step of the lip-deep pressure distribution of described die cavity from described resin;
And then go out described deflection according to described calculation of pressure distribution.
15. a method of injection molding simulation, it comprises:
The step of heating condition that collection is formed with the metal die shape of the metal die of die cavity, heat described metal die and cooling condition that described metal die is cooled off;
According to described metal die shape, described heating condition and described cooling condition, calculate the step of the surface temperature of described die cavity;
Collect the step of injecting the character that is filled into the resin in the described die cavity; With
According to the character of described resin and described die cavity surface temperature calculate resin when described resin injection is in the described die cavity dynamically, and go out the step of the characteristic of the molded article that forms by the resin that is expelled in the die cavity according to the dynamic calculation of described resin.
16. method of injection molding simulation according to claim 15 wherein, and then goes out described die cavity surface temperature according to the dynamic calculation of described resin.
17. method of injection molding simulation according to claim 15 wherein, is independent of the described die cavity surface temperature of dynamically calculating of described resin.
18. method of injection molding simulation according to claim 15, wherein, to particular moment instantaneous filling all resins the resin filling work procedure carry out modelling, thereby calculate described die cavity surface temperature.
19. method of injection molding simulation according to claim 15, wherein, the inject all resins of filling is divided into many parts, and the resin filling work procedure of the resin of each amount of being divided in the instantaneous filling of each particular moment is carried out modelling, thereby calculate described die cavity surface temperature.
20. according to each the described method of injection molding simulation in the claim 15 to 19, wherein,
The step that also comprises the deflection that calculates described die cavity surface deformation;
And then calculate the shape of described molded article according to described deflection.
21. method of injection molding simulation according to claim 20, wherein,
Comprise that also calculating is applied to the step of the lip-deep pressure distribution of described die cavity by described resin;
And then go out described deflection according to described calculation of pressure distribution.
22. a metal die manufacture method, it comprises:
Enforcement of rights requires the step of each the described method of injection molding simulation in 15 to 21;
When described molded article shape is not suitable for, change the step of described metal die shape; With
When described molded article shape is fit to, make the step of the real metal die that satisfies described metal die shape.
23. an injection molding method, it comprises:
Enforcement of rights requires the step of each the described method of injection molding simulation in 15 to 21;
When described molded article shape is not suitable for, change the step of described heating condition and described cooling condition; With
When described molded article shape is fit to, utilize the real metal die that satisfies described metal die shape, satisfy the step that described heating condition and described cooling condition ground carry out injection molded.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP366716/2004 | 2004-12-17 | ||
| JP2004366716A JP4716484B2 (en) | 2004-12-17 | 2004-12-17 | Injection molding simulation apparatus and injection molding simulation method |
| PCT/JP2005/023077 WO2006064885A1 (en) | 2004-12-17 | 2005-12-15 | Injection molding simulation apparatus and method of injection molding simulation |
Publications (2)
| Publication Number | Publication Date |
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| CN101080717A true CN101080717A (en) | 2007-11-28 |
| CN100535908C CN100535908C (en) | 2009-09-02 |
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|---|---|---|---|
| CNB2005800434866A Active CN100535908C (en) | 2004-12-17 | 2005-12-15 | Injection molding simulation apparatus and method of injection molding simulation |
Country Status (5)
| Country | Link |
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| JP (1) | JP4716484B2 (en) |
| KR (1) | KR100886992B1 (en) |
| CN (1) | CN100535908C (en) |
| TW (1) | TW200626344A (en) |
| WO (1) | WO2006064885A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374267A (en) * | 2015-12-09 | 2016-03-02 | 天津天堰科技股份有限公司 | Infant's fontanel simulating device |
| CN114248410A (en) * | 2020-09-23 | 2022-03-29 | 株式会社日立制作所 | Injection molding system and setting assistance method for injection molding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5349859B2 (en) * | 2008-07-31 | 2013-11-20 | キヤノン株式会社 | Molded product shape prediction method, molded product manufacturing method, molded product shape prediction program and storage medium thereof |
| KR101052263B1 (en) * | 2008-12-26 | 2011-07-27 | 주식회사 포스코 | Design Method of Hot Press Mold |
| US8682620B2 (en) * | 2010-11-19 | 2014-03-25 | The Procter And Gamble Company | Method for designing extrusion dies |
| CN102974703B (en) * | 2012-11-29 | 2015-03-18 | 机械科学研究总院先进制造技术研究中心 | Experimental apparatus for simulating cooling system of mold |
| TWI571375B (en) * | 2014-01-14 | 2017-02-21 | 中原大學 | System of intelligence injection molding and method thereof |
| TWI571374B (en) * | 2014-01-14 | 2017-02-21 | 中原大學 | System of intelligence injection molding and method thereof |
| FR3017473B1 (en) * | 2014-02-12 | 2016-03-04 | Faurecia Bloc Avant | ESTIMATION OF A SIZE RELATING TO A PROCESS FOR MANUFACTURING A PIECE BY INJECTING MATERIAL |
| US9216532B2 (en) * | 2014-02-14 | 2015-12-22 | GM Global Technology Operations LLC | Injection mold assembly |
| KR101868131B1 (en) * | 2016-09-23 | 2018-06-18 | 주식회사 서연이화 | Method of optimizing door trim injection molding processing |
| CN112140413B (en) * | 2020-09-02 | 2022-04-08 | 金发科技股份有限公司 | Method and system for predicting die sinking shrinkage rate of plastic part |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2540233B2 (en) * | 1990-08-21 | 1996-10-02 | 積水化学工業株式会社 | Integrated mold analysis system |
| JPH10278085A (en) * | 1997-04-08 | 1998-10-20 | Canon Inc | Device and method for estimating temperature history in injection molding process |
| JPH10278089A (en) * | 1997-04-10 | 1998-10-20 | Canon Inc | Method and device for simulation of injection molding process |
| JP2000289076A (en) * | 1999-04-02 | 2000-10-17 | Plamedia Research Corp | Method for simulating resin molding |
| JP4330404B2 (en) * | 2002-08-27 | 2009-09-16 | 東レエンジニアリング株式会社 | Molded product design support apparatus, design support method, and software |
-
2004
- 2004-12-17 JP JP2004366716A patent/JP4716484B2/en active Active
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2005
- 2005-12-15 WO PCT/JP2005/023077 patent/WO2006064885A1/en not_active Application Discontinuation
- 2005-12-15 KR KR1020077013522A patent/KR100886992B1/en active IP Right Grant
- 2005-12-15 CN CNB2005800434866A patent/CN100535908C/en active Active
- 2005-12-16 TW TW094144960A patent/TW200626344A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105374267A (en) * | 2015-12-09 | 2016-03-02 | 天津天堰科技股份有限公司 | Infant's fontanel simulating device |
| CN114248410A (en) * | 2020-09-23 | 2022-03-29 | 株式会社日立制作所 | Injection molding system and setting assistance method for injection molding machine |
| CN114248410B (en) * | 2020-09-23 | 2023-11-28 | 株式会社日立制作所 | Injection molding system and method for assisting setting of injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100886992B1 (en) | 2009-03-04 |
| TW200626344A (en) | 2006-08-01 |
| CN100535908C (en) | 2009-09-02 |
| TWI304763B (en) | 2009-01-01 |
| KR20070091144A (en) | 2007-09-07 |
| JP4716484B2 (en) | 2011-07-06 |
| JP2006168280A (en) | 2006-06-29 |
| WO2006064885A1 (en) | 2006-06-22 |
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