CN103496128A - Method for preventing long straight injection molded part from buckling and deforming - Google Patents
Method for preventing long straight injection molded part from buckling and deforming Download PDFInfo
- Publication number
- CN103496128A CN103496128A CN201310432102.6A CN201310432102A CN103496128A CN 103496128 A CN103496128 A CN 103496128A CN 201310432102 A CN201310432102 A CN 201310432102A CN 103496128 A CN103496128 A CN 103496128A
- Authority
- CN
- China
- Prior art keywords
- moulding
- time
- buckling deformation
- straight
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
-
- 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
- B29C2945/76939—Using stored or historical data sets
- B29C2945/76946—Using stored or historical data sets using an expert system, i.e. the system possesses a database in which human experience is stored, e.g. to help interfering the possible cause of a fault
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a method for preventing a long straight injection molded part from buckling and deforming, comprising the following steps: optimizing the gate location of the long straight injection molded part; and determining that the die surface temperature is 65-75 DEG C, the melt temperature is 210-230 DEG C, the die-open time is 5-9s, the sum of the injection molding time, the pressure holding time and the cooling time is10-30s and the V/P switching sets from 90% to 99% full of a cavity during injection molding, and carrying out injection molding by using an injection molding machine according to the parameters. By using the method, the buckling deformation of the long straight injection molded part can be reduced, and the long straight injection molded part can meet the requirement of a technical design.
Description
Technical field
The present invention relates to long straight moulding in the moulding technical field, particularly relate to a kind of method of growing straight moulding anti-buckling deformation.
Background technology
Along with improving constantly of people's living standard, plastic products have become indispensable a kind of synthetic material in the modern life.The advantages such as it is wide that plastics have is lightweight, stable chemical performance, electrical insulation capability excellence, sound deadening shock absorption function well, specific strength are high, mechanical strength distributes.Injection molding technology is that graininess or pulverous polymer raw material are added to the polymer barrel, under heating or mechanical shearing effect, plastifies, and finally under the promotion of plunger or screw rod, enters in mould, and cooling curing forms the polymer product consistent with mold cavity.Injection molding technology is one of main machining method of plastic products and can once produces and manufacture complicated moulded products, is the important method of thermoplastic processing and forming.Injection molding technology is easy to be combined with computer software technology, is easy to realize product automation production.Along with making constant progress of science and technology, some novel forming techniques have developed fairly perfect, as novel gas assisted molding technology, multi component injection molding moulding process, powder injection molding forming technique, microporous foam injection mo(u)lding and micro injection molding technology etc.Along with the development of plastics industry, the requirement in plastic products of mechanical property and dimensional accuracy is more and more higher.Produce bad phenomenon and the defects such as buckling deformation and cracking because the impact of molecularly oriented, crystallization and residual stress makes injection-molded item in the product molding process, and be the key factor of the electric property, mechanical property, optical property and the presentation quality thereof that affect plastic products.Although injection molding technology is the technology of a comparative maturity, along with the application of injection-molded item in high-tech areas such as Aeronautics and Astronautics, quality, performance and the model change of goods are had higher requirement.The quality and performance that how to improve goods becomes the important subject in this field.Molding simulation technology, Optimization Theory and Theory of Automatic Control are combined and have great importance to controlling quality of item.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method of growing straight moulding anti-buckling deformation, has avoided producing large warpage in the cast gate direction after long straight moulding moulding.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of growing straight moulding anti-buckling deformation is provided, comprises the following steps:
(1) optimize the gate location of long straight moulding;
(2) mold surface temperature while determining injection moulding is 65 ℃-75 ℃, melt temperature is 210 ℃-230 ℃, the die sinking time is 5s-9s, the summation of injection time, dwell time and cool time is 10s-30s, the V/P switching is set to, into from mold filling, expiring 90% to 99%, according to above-mentioned parameter, utilize injection machine to carry out injection moulding.
Adopt the gate location of the long straight moulding of Moldflow mold flow analysis software optimization in described step (1), specifically comprise following sub-step: use the three-dimensional software modeling, model is imported to Moldflow mold flow analysis software; To model partition grid and grid reparation; Selection analysis type and material; Technological parameter is set; Analytical calculation, obtain the optimum gate location position
Described gate location has three, is respectively the straight moulding left end of distance 145mm, apart from moulding left end 410mm, and apart from moulding left end 685mm.
In described step (2), mold surface temperature is 75 ℃.
In described step (2), melt temperature is 230 ℃.
The die sinking time in described step (2) is 5s.
In described step (2), the summation of injection time, dwell time and cool time is 10s.
Beneficial effect
Owing to having adopted above-mentioned technical scheme, the present invention compared with prior art, has following advantage and good effect: the present invention can reduce the buckling deformation of long straight moulding, makes long straight moulding reach the requirement of technological design.
The accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only are not used in and limit the scope of the invention for the present invention is described.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiments of the present invention relate to a kind of method of growing straight moulding anti-buckling deformation, utilize Moldflow mold flow analysis software to carry out mold flow analysis to long straight moulding, technological parameter to long straight moulding is optimized, and draws the optimum gate location position of long straight moulding, mold surface temperature, melt temperature, the die sinking time, injection moulding+pressurize+cool time, V/P switching, thereby reduce the buckling deformation of long straight moulding, make long straight moulding reach the requirement of technological design.
Embodiment 1
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.Optimize the gate location of long straight moulding, specifically comprise following sub-step: use the three-dimensional software modeling, model is imported to Moldflow mold flow analysis software; To model partition grid and grid reparation; Selection analysis type and material; Technological parameter is set; Analytical calculation, obtain the optimum gate location position.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 75 ℃, and melt temperature is 230 ℃, the summation of injection time, dwell time and cool time is 10s, the die sinking time is 5s, and the V/P switching is set to 90%, when mold filling expires 90%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.7121, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Embodiment 2
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 75 ℃, and melt temperature is 210 ℃, injection time, dwell time and cool time summation be 10s, the die sinking time is 5s, and the V/P switching is set to 99%, when mold filling expires 99%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.6233, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Embodiment 3
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 75 ℃, and melt temperature is 230 ℃, the summation of injection time, dwell time and cool time is 30s, the die sinking time is 5s, and the V/P switching is set to 99%, when mold filling expires 99%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.544, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Embodiment 4
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 75 ℃, and melt temperature is 230 ℃, the summation of injection time, dwell time and cool time is 10s, the die sinking time is 9s, and the V/P switching is set to 99%, when mold filling expires 99%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.4727, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Embodiment 5
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 65 ℃, and melt temperature is 230 ℃, the summation of injection time, dwell time and cool time is 10s, the die sinking time is 5s, and the V/P switching is set to 99%, when mold filling expires 99%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.4705, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Embodiment 6
A kind of method of growing straight moulding anti-buckling deformation comprises the following steps:
(1) optimize the gate location of long straight moulding, make the straight moulding left end of the first cast gate distance 145mm, the second cast gate is apart from moulding left end 410mm, and the 3rd cast gate is apart from moulding left end 685mm.
(2) utilize injection machine to carry out injection moulding, injection moulding time control molding jig surface temperature is 75 ℃, and melt temperature is 220 ℃, the summation of injection time, dwell time and cool time is 10s, the die sinking time is 6s, and the V/P switching is set to 99%, when mold filling expires 99%, is switched.
Known through warping Analysis, the angularity of the straight moulding of length obtained by said method is 0.4417, and the straight moulding of the length that prior art makes is that angularity is at the substandard product more than 2.
Claims (7)
1. the method for a long straight moulding anti-buckling deformation, is characterized in that, comprises the following steps:
(1) optimize the gate location of long straight moulding;
(2) mold surface temperature while determining injection moulding is 65 ℃-75 ℃, melt temperature is 210 ℃-230 ℃, the die sinking time is 5s-9s, the summation of injection time, dwell time and cool time is 10s-30s, the V/P switching is set to, into from mold filling, expiring 90% to 99%, according to above-mentioned parameter, utilize injection machine to carry out injection moulding.
2. the method for the straight moulding anti-buckling deformation of length according to claim 1, it is characterized in that, adopt the gate location of the long straight moulding of Moldflow mold flow analysis software optimization, specifically comprise following sub-step: use the three-dimensional software modeling, model is imported to Moldflow mold flow analysis software; To model partition grid and grid reparation; Selection analysis type and material; Technological parameter is set; Analytical calculation, obtain the optimum gate location position.
3. the method for the straight moulding anti-buckling deformation of length according to claim 2, is characterized in that, described gate location has three, is respectively the straight moulding left end of distance 145mm, apart from moulding left end 410mm, and apart from moulding left end 685mm.
4. the method for the straight moulding anti-buckling deformation of length according to claim 1, is characterized in that, in described step (2), mold surface temperature is 75 ℃.
5. the method for the straight moulding anti-buckling deformation of length according to claim 1, is characterized in that, in described step (2), melt temperature is 230 ℃.
6. the method for the straight moulding anti-buckling deformation of length according to claim 1, is characterized in that, the die sinking time in described step (2) is 5s.
7. the method for the straight moulding anti-buckling deformation of length according to claim 1, is characterized in that, in described step (2), the summation of injection time, dwell time and cool time is 10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310432102.6A CN103496128B (en) | 2013-09-22 | 2013-09-22 | A kind of method growing straight moulding anti-buckling deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310432102.6A CN103496128B (en) | 2013-09-22 | 2013-09-22 | A kind of method growing straight moulding anti-buckling deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103496128A true CN103496128A (en) | 2014-01-08 |
| CN103496128B CN103496128B (en) | 2016-02-17 |
Family
ID=49861436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310432102.6A Expired - Fee Related CN103496128B (en) | 2013-09-22 | 2013-09-22 | A kind of method growing straight moulding anti-buckling deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103496128B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862647A (en) * | 2014-03-12 | 2014-06-18 | 上海夏普电器有限公司 | HIPS (high impact polysteyrene) material door sealing strip for refrigerator and toughening and anti-cracking method of door sealing strip |
| CN105415588A (en) * | 2015-12-28 | 2016-03-23 | 河海大学常州校区 | Injection molding process and mold for remote controllers |
| CN106945224A (en) * | 2017-02-20 | 2017-07-14 | 嵊州陌桑高科股份有限公司 | The integrated drawing method of combined type sericulture frame |
| CN108515678A (en) * | 2018-03-28 | 2018-09-11 | 广西科技大学 | Shooting Technique optimization method based on RBF neural |
| CN109514774A (en) * | 2018-11-27 | 2019-03-26 | 中山兆鸿精密模具注塑有限公司 | A method of preventing air conditioning for automobiles grid backplate moulding buckling deformation |
| WO2022148247A1 (en) * | 2021-01-11 | 2022-07-14 | 重庆平伟汽车零部件有限公司 | Plastic part forming method using hot runner mold driven by electric servo |
-
2013
- 2013-09-22 CN CN201310432102.6A patent/CN103496128B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 刘雷敏等: "长直注塑件注塑工艺参数对翘曲变形的模流分析", 《家电科技》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862647A (en) * | 2014-03-12 | 2014-06-18 | 上海夏普电器有限公司 | HIPS (high impact polysteyrene) material door sealing strip for refrigerator and toughening and anti-cracking method of door sealing strip |
| CN103862647B (en) * | 2014-03-12 | 2016-06-29 | 上海夏普电器有限公司 | HIPS material door of refrigerator press strip and toughness reinforcing Bracking-resistant method thereof |
| CN105415588A (en) * | 2015-12-28 | 2016-03-23 | 河海大学常州校区 | Injection molding process and mold for remote controllers |
| CN105415588B (en) * | 2015-12-28 | 2017-11-17 | 河海大学常州校区 | The injection molding process and mould of a kind of remote control |
| CN106945224A (en) * | 2017-02-20 | 2017-07-14 | 嵊州陌桑高科股份有限公司 | The integrated drawing method of combined type sericulture frame |
| CN108515678A (en) * | 2018-03-28 | 2018-09-11 | 广西科技大学 | Shooting Technique optimization method based on RBF neural |
| CN109514774A (en) * | 2018-11-27 | 2019-03-26 | 中山兆鸿精密模具注塑有限公司 | A method of preventing air conditioning for automobiles grid backplate moulding buckling deformation |
| WO2022148247A1 (en) * | 2021-01-11 | 2022-07-14 | 重庆平伟汽车零部件有限公司 | Plastic part forming method using hot runner mold driven by electric servo |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103496128B (en) | 2016-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103496128B (en) | A kind of method growing straight moulding anti-buckling deformation | |
| CN104802339A (en) | Quick precision mold preparation method | |
| CN101075269A (en) | Method for designing mould cavity | |
| CN103901773A (en) | Method for designing 2D hybrid controller according to input delay | |
| CN105528484A (en) | CAE simulation analysis method of workpiece forming force, and forming device optimization method | |
| CN104139485A (en) | Process for manufacturing bottom box of threading box | |
| CN205009499U (en) | Can rapid heating and refrigerated plastic mold | |
| CN104325264A (en) | Process method for directly forming mold | |
| CN207240704U (en) | A kind of conveniently stripped injection mold | |
| CN102962968B (en) | Framework and control method of configuring manipulator on more than two injection moulding machines for production | |
| CN207240916U (en) | High-pressure resin Transfer molding mould | |
| Hui et al. | Reasearch of wood plastic composites application based on fused deposition modeling technology | |
| CN204340128U (en) | The mechanism that push rod ejects order can be controlled in a kind of mould | |
| CN204136350U (en) | Complicated Automobile parts bicolor injection mould | |
| CN204209909U (en) | The mould structure of assembling in a kind of injection mold mould | |
| CN203449541U (en) | Injection mould of automobile aspirator | |
| CN203449540U (en) | Injection mold for car lower housing | |
| CN203854166U (en) | Rubber injection mold runner device | |
| CN203331302U (en) | Composite material mould with replaceable mould cavity | |
| Wu et al. | Analysis of Effect of Process Parameters on Warpage of a Automobile Bumper Injection Molded Parts | |
| CN208084871U (en) | Injection mold and mold | |
| CN203381130U (en) | Injection mold for rocking arm of automobile air mixing motor driver | |
| CN204914436U (en) | Two positioning die of high -accuracy one round pin | |
| CN206287462U (en) | A kind of formed precision injection mold high | |
| CN103722705A (en) | Mold temperature and pressure control injection molding process of highlight injection molded piece and control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20200922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |