CN114379043A - Mold flow analysis method of turbine, turbine injection molding method and turbine - Google Patents
Mold flow analysis method of turbine, turbine injection molding method and turbine Download PDFInfo
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- CN114379043A CN114379043A CN202111635835.0A CN202111635835A CN114379043A CN 114379043 A CN114379043 A CN 114379043A CN 202111635835 A CN202111635835 A CN 202111635835A CN 114379043 A CN114379043 A CN 114379043A
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- 238000005206 flow analysis Methods 0.000 title claims abstract description 79
- 238000001746 injection moulding Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 49
- 239000013077 target material Substances 0.000 claims abstract description 23
- 238000004458 analytical method Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 5
- 239000003365 glass fiber Substances 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 229920002302 Nylon 6,6 Polymers 0.000 claims description 7
- 238000005211 surface analysis Methods 0.000 claims description 4
- 239000005083 Zinc sulfide Substances 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000012760 heat stabilizer Substances 0.000 claims description 3
- 239000002667 nucleating agent Substances 0.000 claims description 3
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 3
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims 2
- 238000002474 experimental method Methods 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 description 17
- 238000009826 distribution Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 238000005336 cracking Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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Classifications
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14631—Coating reinforcements
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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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76929—Controlling method
- B29C2945/76973—By counting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
- B29L2031/085—Wind turbine blades
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The embodiment of the invention provides a turbine mold flow analysis method, a turbine injection molding method and a turbine, which comprises the steps of testing a target material for injecting a turbine, acquiring material characteristic parameters of the target material, generating a corresponding preset format file according to the material characteristic parameters, introducing the preset format file into a modular flow analysis tool, introducing the 3D model of the turbine into the modular flow analysis tool, setting injection molding parameters, performing mold flow analysis on the 3D model of the turbine by the mold flow analysis tool according to the preset format file and the injection molding parameters to obtain a mold flow analysis result, by adopting a mode of mold flow analysis and inputting corresponding parameters, the whole injection molding process of the turbine is simulated, and carry out the analysis to the result of moulding plastics, avoid traditional mode consuming time longer, work efficiency low scheduling problem, reduced the time and the money cost of actual experiment to a certain extent.
Description
Technical Field
The invention relates to the technical field of material processing, in particular to a mold flow analysis method of a turbine, a turbine injection molding method and the turbine.
Background
At present, the plastic turbine produced may have the problems of blushing, warping, cracking and the like, and the reason for the series of problems is uneven stress distribution during the casting process. However, there are many factors that influence the non-uniform stress distribution, such as raw material formulation, material temperature, mold temperature, injection time, dwell time, and mold structure design. In order to solve such problems, attempts have been made in the aspects of raw material formulation, process conditions, mold structure design, and the like. According to the traditional mode, each factor needs to be experimentally researched, but the traditional mode is long in time consumption and low in working efficiency.
Therefore, it is desirable to provide a new method for analyzing the stress distribution of a turbine to solve the above problems.
Disclosure of Invention
In order to solve the problems in the prior art, embodiments of the present invention provide a turbine mold flow analysis method, a turbine injection molding method, and a turbine, so as to overcome the problems in the prior art, such as long time consumption and low working efficiency, in analyzing the stress distribution of the turbine.
In order to solve one or more of the above technical problems, the present application adopts the following technical solutions:
in a first aspect, a method of modular flow analysis of a turbine is provided, the method comprising:
testing a target material for an injection molding turbine to obtain material characteristic parameters of the target material;
generating a corresponding file with a preset format according to the material characteristic parameters, and introducing the file with the preset format into a modular flow analysis tool;
introducing the 3D model of the turbine into the mold flow analysis tool and setting injection molding parameters;
the mold flow analysis tool carries out mold flow analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result;
and updating the injection molding parameters according to the mold flow analysis result.
Further, the mold flow analysis result includes a stress analysis result, the turbine includes an insert structure, and the updating the injection molding parameters according to the mold flow analysis result includes:
and updating the angle value of the included angle between two adjacent surfaces of the edge of the boss of the insert structure in the injection molding parameters according to the stress analysis result.
Further, the updating of the angle value of the included angle between two adjacent surfaces of the boss edge of the insert structure in the injection molding parameter according to the stress analysis result includes:
and setting the angle value of the included angle between two adjacent surfaces of the lug boss edge of the insert structure to be more than 90 degrees and less than 180 degrees.
Further, the material characteristic parameter includes at least one of capillary viscosity, PVT, thermal conductivity, specific heat, Poisson's ratio and linear expansion coefficient of the material.
Further, the injection molding parameters include at least one of mold temperature, material temperature, insert temperature, and injection time.
Further, the mold flow analysis tool performs mold flow analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters, and acquiring a mold flow analysis result includes:
and the mold flow analysis tool performs double-layer surface analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result.
Further, the preset format file includes a UDB file.
Further, the target material comprises a glass fiber reinforced nylon 66 material, and the glass fiber reinforced nylon 66 material comprises the following components in percentage by weight:
PA 6662.6-84.5%, glass fiber 15-35%, demoulding agent 0.1-0.5%, antioxidant 0.1-0.5%, zinc sulfide 0.1-0.5%, heat stabilizer 0.1-0.4%, nucleating agent 0.1-0.5%.
In a second aspect, a turbine injection molding method is provided, which is based on the above turbine mold flow analysis method, and comprises:
and injection molding the target material according to the updated injection molding parameters to generate the turbine.
In a third aspect, a turbine is provided, which is injection molded by the above turbine injection molding method.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a turbine mold flow analysis method, a turbine injection molding method and a turbine, which comprises the steps of testing a target material for injecting a turbine, acquiring material characteristic parameters of the target material, generating a corresponding preset format file according to the material characteristic parameters, introducing the preset format file into a modular flow analysis tool, introducing the 3D model of the turbine into the modular flow analysis tool, setting injection molding parameters, performing mold flow analysis on the 3D model of the turbine by the mold flow analysis tool according to the preset format file and the injection molding parameters to obtain a mold flow analysis result, by adopting a mode of mold flow analysis and inputting corresponding parameters, the whole injection molding process of the turbine is simulated, the injection molding result is analyzed, so that the problems of long time consumption, low working efficiency and the like of the traditional mode are solved, and the time and the money cost of the actual experiment are reduced to a certain extent;
further, according to the mold flow analysis method of the turbine, the turbine injection molding method and the turbine provided by the embodiment of the invention, the angle value of the included angle between the two adjacent surfaces of the edge of the boss of the insert structure is set to be greater than 90 degrees and less than 180 degrees, so that the target material (namely the raw material) is subjected to injection molding along the outer surface of the insert from inside to outside, and the gap between the insert and the target material is filled preferentially, thereby reducing the probability of the occurrence of the angle effect, improving the orientation degree and uniformity of the distribution of the glass fibers, and avoiding the problem of turbine cracking;
further, according to the mold flow analysis method of the turbine, the turbine injection molding method and the turbine provided by the embodiment of the invention, the mold flow analysis tool performs double-layer analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result, so that the phenomenon that contraction is inconsistent due to different temperatures of the front mold and the rear mold is avoided, and the accuracy of the analysis result is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a method of modular flow analysis of a turbine provided by an embodiment of the present application;
FIG. 2 is a flow chart of a method of turbine injection molding provided by an embodiment of the present application.
Fig. 3 to 13 show simulation results of different injection molding parameters provided in the examples of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As described in the background art, in the prior art, when the influence factors of uneven stress distribution are analyzed in a traditional manner, the problems of long experiment time, low working efficiency and the like exist.
In order to solve the problems, the invention provides a novel method for analyzing the mold flow of the turbine, which adopts a mold flow analysis mode, inputs corresponding parameters, simulates the whole injection molding process, analyzes the injection molding result, makes corresponding adjustment on the parameters according to the analysis result, and finally designs a reasonable scheme according to actual equipment conditions, thereby solving the problems of cracking and the like in the injection molding turbine.
Example one
Referring to fig. 1, a method for analyzing a turbine module flow according to an embodiment of the present invention includes the following steps:
s101: testing a target material for an injection molding turbine to obtain material characteristic parameters of the target material;
s102: generating a corresponding file with a preset format according to the material characteristic parameters, and introducing the file with the preset format into a modular flow analysis tool;
s103: introducing the 3D model of the turbine into the mold flow analysis tool and setting injection molding parameters;
s104: the mold flow analysis tool carries out mold flow analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result;
s105: and updating the injection molding parameters according to the mold flow analysis result.
Specifically, in order to reduce the time consumption of an experiment for analyzing the cause of the cracking of the turbine and improve the working efficiency, in the embodiment of the application, a mode of mold flow analysis is adopted to perform simulation analysis on the injection molding process of the turbine. Mold flow analysis (moldflow) actually means that simulation of injection molding is completed through a computer by using data simulation software, the injection molding process of a mold is simulated, some data results are obtained, and the feasibility of the scheme of the mold is evaluated through the results, so that the design scheme of the mold and the design scheme of a product are perfected.
The material property parameters (also called material physical property data) of the material used for the injection molded product are generally required to be input in the mold flow analysis process, and therefore, before specific analysis, the material property parameters of the target material used for the injection molded turbine need to be tested for subsequent use.
Specifically, the material characteristic parameters obtained in the above steps are fitted to generate a corresponding file with a preset format, and then the file with the preset format is introduced into a modular flow analysis tool, so that the modular flow analysis tool can read and identify the file. It should be noted that, in the embodiment of the present application, the mold flow analysis tool includes, but is not limited to, Moldflow, etc., and the user may select the mold flow analysis tool according to actual needs.
Specifically, a 3D model corresponding to the turbine to be analyzed is established, and then the 3D model is imported into a mold flow analysis tool, and injection molding parameters are set. It should be noted that, in the embodiment of the present application, a specific manner adopted for establishing the 3D model is not limited, and a user may select the 3D model according to actual needs.
As a preferred implementation, in an embodiment of the present invention, the mold flow analysis result includes a stress analysis result, the turbine includes an insert structure, and the updating the injection molding parameters according to the mold flow analysis result includes:
and updating the angle value of the included angle between two adjacent surfaces of the edge of the boss of the insert structure in the injection molding parameters according to the stress analysis result.
Specifically, on one hand, uneven stress distribution during casting is a main cause of problems such as whitening, warping and cracking of a produced turbine, and on the other hand, during injection molding, high-viscosity raw materials in a molten state are poor in flowability, so that the raw materials are injected according to a sequence from the periphery of a cavity to the middle, an angle effect is easy to occur at an included angle between two adjacent surfaces of a boss edge of an insert structure, stress concentration is directly caused, and multiple uneven phenomena occur on glass fibers.
As a preferred embodiment, in an embodiment of the present invention, the updating, according to the stress analysis result, an angle value of an included angle between two adjacent surfaces of a boss edge of the insert structure in the injection molding parameter includes:
and setting the angle value of the included angle between two adjacent surfaces of the lug boss edge of the insert structure to be more than 90 degrees and less than 180 degrees.
Specifically, through experimental discovery, when the contained angle of the adjacent two faces in boss edge of mold insert structure sets up to the obtuse angle, when moulding plastics, can avoid the high viscosity raw materials under the molten state because mobility is relatively poor, lead to the raw materials to mould plastics according to the order from the cavity periphery to centre, appear the angle effect in boss edge corner department of mold insert structure, directly lead to stress concentration to and avoid glass fiber to appear the inhomogeneous phenomenon in many places.
In a preferred embodiment, the material property parameter includes at least one of capillary viscosity, PVT, thermal conductivity, specific heat, poisson's ratio, and linear expansion coefficient of the material.
Specifically, in order to make the analysis result closer to the actual production condition, the actual conditions such as product structure, material performance, molding conditions, injection molding pressure and the like are fitted to the maximum extent in the process of the simulation analysis of the mold flow analysis tool, so that the accuracy of the material characteristic parameters is the primary reason for ensuring the accuracy of the analysis result.
Among the above material characteristic parameters, the capillary viscosity refers to the fluid viscosity obtained by measuring the flow rate of the fluid flowing through the capillary and the pressure difference between the outlet and the inlet of the capillary by a viscometer and then obtaining the fluid viscosity according to the Hagen-Poisculli rule;
PVT refers to the specific volume as a function of temperature and pressure;
the heat conductivity coefficient refers to the heat transferred by 1 square meter area within 1 second (1s) with the temperature difference of 1 degree (K, DEG C) on the two side surfaces of 1m material under the condition of stable heat transfer;
specific heat, also known as specific heat capacity, refers to the ratio of the amount of heat absorbed by a mass of a substance at an elevated temperature to the product of its mass and the elevated temperature;
the poisson ratio is the ratio of the absolute value of transverse positive strain and axial positive strain when the material is unidirectionally pulled or pressed, and is also called a transverse deformation coefficient, and is an elastic constant reflecting the transverse deformation of the material;
the linear expansion coefficient refers to the ratio of the change in length of a solid substance per 1 degree centigrade change in temperature to its length at the original temperature (not necessarily 0 ℃).
In a preferred embodiment, the injection molding parameters include at least one of a mold temperature, a material temperature, an insert temperature, and an injection time.
Specifically, the injection molding parameters of the product in the injection molding process are multiple, and in the embodiment of the application, the influence of the parameters such as the mold temperature, the material temperature, the insert temperature and the injection time on the injection molding result is mainly analyzed.
FIGS. 3 and 4 show the results of the simulation of a mold temperature of 180 ℃, a material temperature of 280 ℃ and an injection time of 8.5s, FIGS. 5 and 6 show the results of the simulation of a mold temperature of 180 ℃, a material temperature of 280 ℃ and an injection time of 15s, and it can be seen from the results of the simulation of FIGS. 3 to 6 that the injection time is prolonged, the orientation of glass fibers is concentrated, and the probability of stress concentration is increased in the case of a long injection time, and therefore, the injection time for injection molding should be reduced;
FIGS. 7 and 8 show the simulation results of the mold temperature of 50 deg.C, the material temperature of 280 deg.C and the injection time of 8.5s, and it can be seen from the simulation results of FIGS. 7 and 8 that the orientation of the glass fibers is still concentrated, the difference between the material temperature and the mold temperature is large, the cooling rate is too fast, the stress distribution is not uniform, and the mold temperature should be increased;
fig. 9 and 10 are simulation results of a mold temperature of 180 ℃, a material temperature of 300 ℃ and an injection time of 8.5s, and it can be seen from the simulation results of fig. 9 and 10 that too high a material temperature greatly increases the flowability of nylon, and the compatibility of glass fibers with nylon in a molten state in a screw is deteriorated, which causes the problems of non-uniform distribution of glass fibers after injection molding and stress concentration, so the material temperature should be lowered;
fig. 11 is a simulation result of the insert temperature not being set under the initial conditions of 180 ℃ for the mold temperature, 280 ℃ for the material temperature, and 8.5s for the injection time after the insert is added, fig. 12 is a simulation result of the insert temperature being increased to 300 ℃ on the basis of the initial conditions of fig. 11, and fig. 13 is a simulation result of the insert temperature being adjusted to be identical to the mold temperature on the basis of the initial conditions of fig. 11, that is, the insert temperature and the mold temperature are both 180 ℃, and through comparison of several simulation results of fig. 11 to 13, when the insert temperature and the mold temperature are kept identical, the glass fiber orientation distribution is uniform, which is beneficial to reducing the problem of stress concentration.
In summary, the optimal process parameters obtained by adjusting and optimizing the process parameters for many times and then simulating the data again are as follows:
temperature of the die: 180-240 deg.C
Material temperature: 270 ℃ to 290 DEG C
Injection time: 5s to 10s
Insert temperature: 180-240 deg.C
As a preferred implementation manner, in an embodiment of the present invention, the performing, by the mold flow analysis tool, mold flow analysis on the 3D model of the turbine according to the preset format file and the injection molding parameter, and obtaining a mold flow analysis result includes:
and the mold flow analysis tool performs double-layer surface analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result.
Specifically, for a product with large wall thickness, contraction inconsistency can be caused due to different temperatures of the front mold and the rear mold, namely, the temperature difference of the two layers of rubber materials and the temperature difference of the mold can cause deformation, so that double-layer surface analysis is adopted during mold flow analysis, and the accuracy of an analysis result can be improved.
As a preferred implementation manner, in an embodiment of the present invention, the preset format file includes a UDB file.
As a preferred embodiment, in an embodiment of the present invention, the target material includes a glass fiber reinforced nylon 66 material, and the glass fiber reinforced nylon 66 material includes, by weight:
PA 6662.6-84.5%, glass fiber 15-35%, demoulding agent 0.1-0.5%, antioxidant 0.1-0.5%, zinc sulfide 0.1-0.5%, heat stabilizer 0.1-0.4%, nucleating agent 0.1-0.5%.
Specifically, the glass fiber reinforced nylon 66 material is adopted as a target material for simulation analysis, and experiments show that when the included angle between two adjacent surfaces of the edge of the boss of the insert structure is a right angle, during injection molding, because the high-viscosity raw material in a molten state has poor fluidity, the target material is injected from the periphery of the cavity to the middle in sequence, and the corner effect is easy to appear at the right-angle corner of the boss of the insert, which directly causes stress concentration, the glass fiber also has a phenomenon of multiple non-uniformity, and simulation analysis shows that when the included angle between two adjacent surfaces of the edge of the boss of the insert structure is changed into an obtuse corner, the target material can be injected from inside to outside along the outer surface of the insert, the gap between the insert and the target material is filled preferentially, the warping stress is reduced from 1489Mpa to 1100Mpa, and the probability of the occurrence of the angle effect is reduced; from the distribution of glass fibers, the orientation degree and uniformity are obviously improved, so that the problem of turbine cracking can be effectively solved by changing the included angle of two adjacent surfaces of the edge of the boss of the insert structure into an obtuse angle.
Example two
Corresponding to the first embodiment, the present invention further provides a turbine injection molding method, wherein in this embodiment, the same or similar contents as those in the first embodiment may be referred to the above description, and are not repeated herein. Referring to fig. 2, the method includes the following steps:
s201: and injection molding the target material according to the updated injection molding parameters to generate the turbine.
Specifically, without loss of generality, in the updated injection molding parameters, the angle value of the included angle between two adjacent surfaces of the boss edge of the insert structure is greater than 90 degrees and less than 180 degrees. The raw material is injected from inside to outside along the outer surface of the insert, and the gap between the insert and the raw material is filled preferentially, so that the probability of the angle effect is reduced.
EXAMPLE III
Corresponding to the first and second embodiments, the present invention further provides a turbine, which is obtained by injection molding according to the above turbine injection molding method, wherein in this embodiment, the same or similar contents as those in the first or second embodiment may be referred to the above description, and are not repeated herein.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A method of modular flow analysis of a turbine, the method comprising:
testing a target material for an injection molding turbine to obtain material characteristic parameters of the target material;
generating a corresponding file with a preset format according to the material characteristic parameters, and introducing the file with the preset format into a modular flow analysis tool;
introducing the 3D model of the turbine into the mold flow analysis tool and setting injection molding parameters;
the mold flow analysis tool carries out mold flow analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result;
and updating the injection molding parameters according to the mold flow analysis result.
2. The method of mold flow analysis of a turbine according to claim 1, wherein the mold flow analysis results comprise stress analysis results, the turbine comprises insert structures, and the updating the injection molding parameters according to the mold flow analysis results comprises:
and updating the angle value of the included angle between two adjacent surfaces of the edge of the boss of the insert structure in the injection molding parameters according to the stress analysis result.
3. The method for analyzing the mold flow of the turbine according to claim 2, wherein the updating the angle value of the included angle between the two adjacent surfaces of the boss edge of the insert structure in the injection molding parameters according to the stress analysis result comprises:
and setting the angle value of the included angle between two adjacent surfaces of the lug boss edge of the insert structure to be more than 90 degrees and less than 180 degrees.
4. The method of modular flow analysis of a turbine of claim 1, wherein the material property parameter comprises at least one of capillary viscosity, PVT, thermal conductivity, specific heat, poisson's ratio, linear expansion coefficient of the material.
5. The method of mold flow analysis of a turbine according to claim 1, wherein the injection molding parameters comprise at least one of mold temperature, charge temperature, insert temperature, and injection time.
6. The method for analyzing the mold flow of the turbine according to claim 1, wherein the mold flow analyzing tool performs mold flow analysis on the 3D model of the turbine according to the pre-set format file and the injection molding parameters, and obtaining the mold flow analysis result comprises:
and the mold flow analysis tool performs double-layer surface analysis on the 3D model of the turbine according to the preset format file and the injection molding parameters to obtain a mold flow analysis result.
7. The modular stream analysis method of a turbine as claimed in claim 1, wherein the pre-set format file comprises a UDB file.
8. The modular flow analysis method of a turbine according to claim 1, wherein the target material comprises a fiberglass reinforced nylon 66 material, and the fiberglass reinforced nylon 66 material comprises, in weight percent:
PA 6662.6-84.5%, glass fiber 15-35%, demoulding agent 0.1-0.5%, antioxidant 0.1-0.5%, zinc sulfide 0.1-0.5%, heat stabilizer 0.1-0.4%, nucleating agent 0.1-0.5%.
9. A turbo injection molding method based on the method of analyzing a mold flow of the turbine according to any one of claims 1 to 8, the turbo injection molding method comprising:
and injection molding the target material according to the updated injection molding parameters to generate the turbine.
10. A turbine, characterized in that it is injection molded by the turbine injection molding method according to claim 9.
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| CN202111635835.0A CN114379043B (en) | 2021-12-29 | 2021-12-29 | Turbine die flow analysis method, turbine injection molding method and turbine |
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| CN202111635835.0A CN114379043B (en) | 2021-12-29 | 2021-12-29 | Turbine die flow analysis method, turbine injection molding method and turbine |
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| CN114379043B CN114379043B (en) | 2024-06-04 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314307A (en) * | 1996-05-28 | 1997-12-09 | Hitachi Ltd | Production of injection formed product |
| JP2002273772A (en) * | 2001-03-22 | 2002-09-25 | Toray Ind Inc | Structural strength simulation method and device for injection molded article |
| JP2005301852A (en) * | 2004-04-15 | 2005-10-27 | Olympus Corp | Simulation method and simulation program for injection molding |
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| CN111898265A (en) * | 2020-07-28 | 2020-11-06 | 浙江广合智能科技有限公司 | Method for determining injection molding process parameters of plastic product and method for establishing coefficient library thereof |
| CN112549420A (en) * | 2020-11-05 | 2021-03-26 | 山东永聚医药科技有限公司 | Preparation process of polymer prefilled syringe |
| TW202113736A (en) * | 2019-09-23 | 2021-04-01 | 大陸商信華科技(廈門)有限公司 | Automatic moldflow analysis system and method |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09314307A (en) * | 1996-05-28 | 1997-12-09 | Hitachi Ltd | Production of injection formed product |
| JP2002273772A (en) * | 2001-03-22 | 2002-09-25 | Toray Ind Inc | Structural strength simulation method and device for injection molded article |
| JP2005301852A (en) * | 2004-04-15 | 2005-10-27 | Olympus Corp | Simulation method and simulation program for injection molding |
| CN108549761A (en) * | 2018-03-30 | 2018-09-18 | 广西科技大学 | Optimum design of die method |
| TW202113736A (en) * | 2019-09-23 | 2021-04-01 | 大陸商信華科技(廈門)有限公司 | Automatic moldflow analysis system and method |
| CN111898265A (en) * | 2020-07-28 | 2020-11-06 | 浙江广合智能科技有限公司 | Method for determining injection molding process parameters of plastic product and method for establishing coefficient library thereof |
| CN112549420A (en) * | 2020-11-05 | 2021-03-26 | 山东永聚医药科技有限公司 | Preparation process of polymer prefilled syringe |
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