CN108407246A - A kind of high optical display unit frame high-surface gloss traceless injection molding process - Google Patents
A kind of high optical display unit frame high-surface gloss traceless injection molding process Download PDFInfo
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- CN108407246A CN108407246A CN201810314564.0A CN201810314564A CN108407246A CN 108407246 A CN108407246 A CN 108407246A CN 201810314564 A CN201810314564 A CN 201810314564A CN 108407246 A CN108407246 A CN 108407246A
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 64
- 230000003287 optical effect Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 239000004033 plastic Substances 0.000 claims description 27
- 229920003023 plastic Polymers 0.000 claims description 27
- 238000001035 drying Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 8
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 8
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 239000008234 soft water Substances 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002207 thermal evaporation Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000012797 qualification Methods 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/04—Conditioning or physical treatment of the material to be shaped by cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/08—Conditioning or physical treatment of the material to be shaped by using wave energy or particle radiation
-
- 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
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- 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
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to injection molding technology fields, are related to a kind of high optical display unit frame high-surface gloss traceless injection molding process.The display jamb surface glossiness of preparation is high and without the bad defect such as molten trace, current mark, bubble and shrink mark, and the case hardness and quality of product greatly improve, and product qualification rate improves 20 30%；It uses first to condense before injection molding and is dried microwave treatment again afterwards, effectively can thoroughly eliminate residualinternal stress present in raw material；Divide three phases pressure regulation in injection moulding process, avoid shrinkage cavity and the generation of recess, eliminate current mark, jointing line and lamination, reduces the various defects of the internal stress generated in product injection moulding process and injection moulding process generation, improve the qualification rate and quality, intensity of product；Using being rapidly heated and being quickly cooled down, rate reaches unanimity, and makes full use of thermal energy, reduces heat energy loss and production cost, improves the qualification rate of product；Without processes such as sprayings, the pollution to environment is greatly reduced, reaches environmental protection and energy saving requirement.
Description
Technical field
The invention belongs to injection molding technology fields, are related to a kind of high optical display unit frame high-surface gloss traceless injection molding process.
Background technology
High-surface gloss traceless injection molding process is also known as rapid thermal cycles injection molding process or spraying-free high-surface gloss traceless is molded into
Type technique, using this technique can copy mold surface well any shape, make product part surface without molten trace, without current mark,
Without streamline, without shrink mark；Surface bloom, reaches mirror effect；Improve plastic intensity and case hardness；Shaping thin wall is set to improve injection molding
Mobility improves product quality and intensity；The heavy wall injection molding period is set to reduce by 60% or more；In order to improve Injection Molding Products
Surface quality, it will usually use spraying process, spraying can ensure that product surface has anti-corrosion, appearance beautiful, but spray work
Skill is using hazardous chemicals such as a large amount of volatile solvents, auxiliary agent, paint vehicles, and environmental pollution is serious, and this chemicals is inflammable
Explosive there are larger security risks, while prodigious influence can be also caused on health；And high-surface gloss traceless injection molding work
Skill is not necessarily to the serious spraying process of follow-up environmental pollution, can reduce technological process, saves the energy and material, reduction are produced into
This, while the health and environment of operating personnel will not be impacted, it is widely used in household electrical appliances, automobile communication, daily necessities, doctor
Treat industry etc., such as panel TV set, liquid crystal display, air-conditioning, automotive upholstery.
With the upgrading of product requirement and demand for experience, for plastic product, class digital product and household are especially moved
Requirement of the electric equipment products for appearance and contact experience have increased to higher demand, environmentally friendly, lasting and gentle sense of touch body
It tests and has been put on subject under discussion.High-surface gloss traceless injection molding process is mainly in plastic injection molding process to cold Jie of heat is arranged in a mold
Matter channel come mold is quickly cooled down, quickly heating realize；Presentation quality can be reached for product simple in structure
It is required that and performance requirement, however to complicated and high precision product, general high-surface gloss traceless injection molding process can not
Reach satisfied result；This is because the even property of heating and inhomogeneous cooling of the complex precise product in die cavity causes in product generation
Stress and appearance is seriously affected, causes low production efficiency, product qualified rate is low, process costs height etc..Therefore, it is necessary to existing
High-light no-trace Shooting Technique is improved, to overcome deficiency in the prior art.
Invention content
The purpose of invention：The present invention provides a kind of high optical display unit frame high-surface gloss traceless injection molding process.
Technical solution：In order to achieve the goal above, the invention discloses a kind of high optical display unit frame high-light no-traces to be molded
Moulding process includes the following steps：
（1）Die sinking：According to the corresponding injection mold of the structure design of display edge frame product, and the mold is provided with close to type
The profile-followed water channel of chamber carries out manufacture in strict accordance with mold design drawing and processes the mold, and it is qualified to carry out die trial after the completion of mold
After can carry out subsequent technique；
（2）Material selection and processing：The preferable PC, PC/PMMA of selecting liquidity, PMMA/ABS, high-light ABS material or PC/GF
As injected plastics material, the injected plastics material of selection is placed in vacuum condensation case with after 5-10 DEG C of condensation process 0.5-1.0h, then is put
Enter in vacuum drying chamber makes its humidity ＜ 0.2% with 80-90 DEG C of temperature drying 2-3h, and injected plastics material is finally carried out microwave treatment
It eliminates residualinternal stress and injected plastics material humidity is made to be further reduced to ＜ 0.01%；
（3）Mold preheats：Qualified injection mold is fixed on injection molding machine, injection mold is flowed into using high temperature drying hot gas
Row the pre-heat treatment, preheating temperature are 70-80 DEG C, and the pre-heat treatment time is 1-2h；
（4）Molding is rapidly heated：High temperature drying thermal current is passed through according to process requirements to the mold after preheating quickly to be heated
It is warming up to 120-130 DEG C, so that mold temperature is increased rapidly and reaches injected plastics material glass transformation temperature or more；
（5）Melting, injection molding：The mould after quick heat temperature raising is entered after heating in injected plastics material presented shares injection molding machine is melted
Injection molding is carried out in tool；
（6）It is quickly cooled down：The cooling water that 4-10 DEG C is injected in mold with compression pump, makes mold be quickly cooled to 20-40 DEG C, after
It is blown into temperature again as 20-30 DEG C, the dry air of 0.3-0.5MPa, cooling water drainage is gone out into mold；
（7）Mold pickup：Air is blown into mold with the air pressure of 0.2-0.6MPa after die sinking and carries out impurity cleaning and drying
Molded part is taken out after processing.
Preferably, in step（5）And step（6）Between further include step pressure regulation injection molding, pressure regulation injection molding includes three
Stage is the 80-90% of highest injection pressure, the 60-70% of highest injection pressure and highest injection pressure and last stage terminate
The pressure pressurize of the 60-70% of highest injection pressure is maintained to handle 5-15s afterwards, mold temperature maintains 120-140 in injection moulding process
℃。
Preferably, the highest injection pressure is 65-85MPa.
Preferably, the step（2）Middle microwave treatment temperature is 35-45 DEG C, microwave power 300-600W, time 1-
3min。
Preferably, the step（2）Further include HIGH PRESSURE TREATMENT after microwave treatment, the HIGH PRESSURE TREATMENT pressure 300-
500MPa, temperature are 50-60 DEG C, processing time 1-3min.Further eliminate residualinternal stress.
Preferably, the step（4）It is 160-180 DEG C that high temperature, which dries hot stream temperature, pressure 0.2-0.3MPa.
Preferably, the step（5）Mold temperature is maintained always not less than 125 DEG C in injection moulding process.
Preferably, the step（6）Middle cooling water is soft water.
Above-mentioned technical proposal can be seen that the present invention and have the advantages that：A kind of bloom of the present invention is shown
Device frame high-surface gloss traceless injection molding process, display jamb surface glossiness prepared by present invention process are high and without molten trace, stream
The bad defect such as trace, bubble and shrink mark, the case hardness and quality of product greatly improve, and product qualification rate improves 20-30%；Note
It uses first to condense before modeling and is dried microwave treatment again afterwards, effectively can thoroughly eliminate remaining planted agent present in raw material
Power；Pressure regulation divides three phases to carry out in injection moulding process, helps avoid shrinkage cavity and the generation of recess, eliminate current mark, jointing line and
Lamination substantially reduces the internal stress generated in product injection moulding process, greatly reduces the various of product injection moulding process generation
Defect improves the qualification rate and quality, intensity of product；Using being rapidly heated and being quickly cooled down, rate reaches unanimity, and makes full use of
Thermal energy reduces heat energy loss, reduces production cost, while helping to improve the qualification rate of product；Cooling water is reduced using soft water
Injury and pollution to mold, reduce the trouble of cleaning, improve the service life of mold, further save production cost and raising
Production efficiency；Bloom injection molding process of the present invention greatly reduced the pollution to environment without processes such as sprayings,
Reach environmental protection and energy saving requirement.
Specific implementation mode
The specific embodiment of the invention is described in detail below.
Embodiment 1
A kind of high optical display unit frame high-surface gloss traceless injection molding process of the present invention, includes the following steps：
（1）Die sinking：According to the corresponding injection mold of the structure design of display edge frame product, and the mold is provided with close to type
The profile-followed water channel of chamber carries out manufacture in strict accordance with mold design drawing and processes the mold, and it is qualified to carry out die trial after the completion of mold
After can carry out subsequent technique；
（2）Material selection and processing：The preferable PC, PC/PMMA of selecting liquidity, PMMA/ABS, high-light ABS material or PC/GF
As injected plastics material, the injected plastics material of selection is placed in vacuum condensation case with after 5-10 DEG C of condensation process 0.5-1.0h, then is put
Enter in vacuum drying chamber makes its humidity ＜ 0.2% with 80-90 DEG C of temperature drying 2-3h, and injected plastics material is finally carried out microwave treatment
It eliminates residualinternal stress and injected plastics material humidity is made to be further reduced to ＜ 0.01%；
（3）Mold preheats：Qualified injection mold is fixed on injection molding machine, injection mold is flowed into using high temperature drying hot gas
Row the pre-heat treatment, preheating temperature are 70-80 DEG C, and the pre-heat treatment time is 1-2h；
（4）Molding is rapidly heated：High temperature drying thermal current is passed through according to process requirements to the mold after preheating quickly to be heated
It is warming up to 120-130 DEG C, so that mold temperature is increased rapidly and reaches injected plastics material glass transformation temperature or more；
（5）Melting, injection molding：The mould after quick heat temperature raising is entered after heating in injected plastics material presented shares injection molding machine is melted
Injection molding is carried out in tool；
（6）It is quickly cooled down：The cooling water that 4-10 DEG C is injected in mold with compression pump, makes mold be quickly cooled to 20-40 DEG C, after
It is blown into temperature again as 20-30 DEG C, the dry air of 0.3-0.5MPa, cooling water drainage is gone out into mold；
（7）Mold pickup：Air is blown into mold with the air pressure of 0.2-0.6MPa after die sinking and carries out impurity cleaning and drying
Molded part is taken out after processing.
The step（2）Middle microwave treatment temperature is 35-45 DEG C, microwave power 300-600W, time 1-3min.
The step（2）Further include HIGH PRESSURE TREATMENT after microwave treatment, the HIGH PRESSURE TREATMENT pressure 300-500MPa, temperature are
50-60 DEG C, processing time 1-3min.Further eliminate residualinternal stress.
The step（4）It is 160-180 DEG C that high temperature, which dries hot stream temperature, pressure 0.2-0.3MPa.
The step（5）Mold temperature is maintained always not less than 125 DEG C in injection moulding process.
The step（6）Middle cooling water is soft water.
Embodiment 2
A kind of high optical display unit frame high-surface gloss traceless injection molding process of the present invention, includes the following steps：
（1）Die sinking：According to the corresponding injection mold of the structure design of display edge frame product, and the mold is provided with close to type
The profile-followed water channel of chamber carries out manufacture in strict accordance with mold design drawing and processes the mold, and it is qualified to carry out die trial after the completion of mold
After can carry out subsequent technique；
（2）Material selection and processing：The preferable PC, PC/PMMA of selecting liquidity, PMMA/ABS, high-light ABS material or PC/GF
As injected plastics material, the injected plastics material of selection is placed in vacuum condensation case with after 5-10 DEG C of condensation process 0.5-1.0h, then is put
Enter in vacuum drying chamber makes its humidity ＜ 0.2% with 80-90 DEG C of temperature drying 2-3h, and injected plastics material is finally carried out microwave treatment
It eliminates residualinternal stress and injected plastics material humidity is made to be further reduced to ＜ 0.01%；
（3）Mold preheats：Qualified injection mold is fixed on injection molding machine, injection mold is flowed into using high temperature drying hot gas
Row the pre-heat treatment, preheating temperature are 70-80 DEG C, and the pre-heat treatment time is 1-2h；
（4）Molding is rapidly heated：High temperature drying thermal current is passed through according to process requirements to the mold after preheating quickly to be heated
It is warming up to 120-130 DEG C, so that mold temperature is increased rapidly and reaches injected plastics material glass transformation temperature or more；
（5）Melting, injection molding：The mould after quick heat temperature raising is entered after heating in injected plastics material presented shares injection molding machine is melted
Injection molding is carried out in tool；
（6）It is quickly cooled down：The cooling water that 4-10 DEG C is injected in mold with compression pump, makes mold be quickly cooled to 20-40 DEG C, after
It is blown into temperature again as 20-30 DEG C, the dry air of 0.3-0.5MPa, cooling water drainage is gone out into mold；
（7）Mold pickup：Air is blown into mold with the air pressure of 0.2-0.6MPa after die sinking and carries out impurity cleaning and drying
Molded part is taken out after processing.
In step（5）And step（6）Between further include step pressure regulation injection molding, pressure regulation injection molding includes three phases for most
It the 80-90% of high injection pressure, the 60-70% of highest injection pressure and highest injection pressure and is maintained most after last stage
The pressure pressurize of the 60-70% of high injection pressure handles 5-15s, and mold temperature maintains 120-140 DEG C in injection moulding process.
The highest injection pressure is 65-85MPa.
The step（2）Middle microwave treatment temperature is 35-45 DEG C, microwave power 300-600W, time 1-3min.
The step（2）Further include HIGH PRESSURE TREATMENT after microwave treatment, the HIGH PRESSURE TREATMENT pressure 300-500MPa, temperature are
50-60 DEG C, processing time 1-3min.Further eliminate residualinternal stress.
The step（4）It is 160-180 DEG C that high temperature, which dries hot stream temperature, pressure 0.2-0.3MPa.
The step（5）Mold temperature is maintained always not less than 125 DEG C in injection moulding process.
The step（6）Middle cooling water is soft water.
The above is only a preferred embodiment of the present invention, it should be noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement can also be made, these improvement also should be regarded as the guarantor of the present invention
Protect range.
Claims (8)
1. a kind of high optical display unit frame high-surface gloss traceless injection molding process, it is characterised in that：Include the following steps：
（1）Die sinking：According to the corresponding injection mold of the structure design of display edge frame product, and the mold is provided with close to type
The profile-followed water channel of chamber carries out manufacture in strict accordance with mold design drawing and processes the mold, and it is qualified to carry out die trial after the completion of mold
After can carry out subsequent technique；
（2）Material selection and processing：The preferable PC, PC/PMMA of selecting liquidity, PMMA/ABS, high-light ABS material or PC/GF
As injected plastics material, the injected plastics material of selection is placed in vacuum condensation case with after 5-10 DEG C of condensation process 0.5-1.0h, then is put
Enter in vacuum drying chamber makes its humidity ＜ 0.2% with 80-90 DEG C of temperature drying 2-3h, and injected plastics material is finally carried out microwave treatment
It eliminates residualinternal stress and injected plastics material humidity is made to be further reduced to ＜ 0.01%；
（3）Mold preheats：Qualified injection mold is fixed on injection molding machine, injection mold is flowed into using high temperature drying hot gas
Row the pre-heat treatment, preheating temperature are 70-80 DEG C, and the pre-heat treatment time is 1-2h；
（4）Molding is rapidly heated：High temperature drying thermal current is passed through according to process requirements to the mold after preheating quickly to be heated
It is warming up to 120-130 DEG C, so that mold temperature is increased rapidly and reaches injected plastics material glass transformation temperature or more；
（5）Melting, injection molding：The mould after quick heat temperature raising is entered after heating in injected plastics material presented shares injection molding machine is melted
Injection molding is carried out in tool；
（6）It is quickly cooled down：The cooling water that 4-10 DEG C is injected in mold with compression pump, makes mold be quickly cooled to 20-40 DEG C, after
It is blown into temperature again as 20-30 DEG C, the dry air of 0.3-0.5MPa, cooling water drainage is gone out into mold；
（7）Mold pickup：Air is blown into mold with the air pressure of 0.2-0.6MPa after die sinking and carries out impurity cleaning and drying
Molded part is taken out after processing.
2. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 1, it is characterised in that：
Step（5）And step（6）Between further include step pressure regulation injection molding, pressure regulation injection molding includes three phases for highest injection pressure
80-90%, highest injection pressure and highest injection pressure 60-70% and after last stage maintain highest injection pressure
The pressure pressurize of 60-70% handle 5-15s, mold temperature maintains 120-140 DEG C in injection moulding process.
3. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 2, it is characterised in that：Institute
The highest injection pressure stated is 65-85MPa.
4. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 1 or 2, feature exist
In：The step（2）Middle microwave treatment temperature is 35-45 DEG C, microwave power 300-600W, time 1-3min.
5. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 4, it is characterised in that：Institute
State step（2）Further include HIGH PRESSURE TREATMENT after microwave treatment, the HIGH PRESSURE TREATMENT pressure 300-500MPa, temperature are 50-60 DEG C, place
The reason time is 1-3min.
6. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 1 or 2, feature exist
In：The step（4）It is 160-180 DEG C that high temperature, which dries hot stream temperature, pressure 0.2-0.3MPa.
7. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 1 or 2, feature exist
In：The step（5）Mold temperature is maintained always not less than 125 DEG C in injection moulding process.
8. a kind of high optical display unit frame high-surface gloss traceless injection molding process according to claim 1 or 2, feature exist
In：The step（6）Middle cooling water is soft water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314564.0A CN108407246A (en) | 2018-04-10 | 2018-04-10 | A kind of high optical display unit frame high-surface gloss traceless injection molding process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810314564.0A CN108407246A (en) | 2018-04-10 | 2018-04-10 | A kind of high optical display unit frame high-surface gloss traceless injection molding process |
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| CN108407246A true CN108407246A (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113650251A (en) * | 2021-07-12 | 2021-11-16 | 冠鸿光电科技(武汉)有限公司 | Highlight traceless injection molding process for frame of back plate of highlight display |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7323125B2 (en) * | 2001-06-08 | 2008-01-29 | Mitsubishi Heavy Industries, Ltd. | Method of analyzing injection molding conditions |
| CN203752463U (en) * | 2013-12-31 | 2014-08-06 | 深圳市奥德机械有限公司 | Highlight mold temperature controller |
| CN106738668A (en) * | 2016-11-26 | 2017-05-31 | 滁州市天悦塑胶制品有限公司 | A kind of steam-type high-surface gloss traceless injection molding process of complex precise plastic products |
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| CN203752463U (en) * | 2013-12-31 | 2014-08-06 | 深圳市奥德机械有限公司 | Highlight mold temperature controller |
| CN106738668A (en) * | 2016-11-26 | 2017-05-31 | 滁州市天悦塑胶制品有限公司 | A kind of steam-type high-surface gloss traceless injection molding process of complex precise plastic products |
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| CN113650251A (en) * | 2021-07-12 | 2021-11-16 | 冠鸿光电科技(武汉)有限公司 | Highlight traceless injection molding process for frame of back plate of highlight display |
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Application publication date: 20180817 |