CN102615779A - Optical element injection molding method - Google Patents
Optical element injection molding method Download PDFInfo
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- CN102615779A CN102615779A CN2011100282362A CN201110028236A CN102615779A CN 102615779 A CN102615779 A CN 102615779A CN 2011100282362 A CN2011100282362 A CN 2011100282362A CN 201110028236 A CN201110028236 A CN 201110028236A CN 102615779 A CN102615779 A CN 102615779A
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- optical element
- die
- forming cavity
- injection molding
- cavity
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Abstract
An optical element injection molding method is provided. The method comprises the following steps: providing a die for injection molding of an optical element, wherein the die comprises a die core having a molding cavity; depositing a layer of a lubrication film on the surface of the molding cavity of the die core through adopting an atom layer deposition method; and carrying out injection molding through using the die to form the optical element. Compared with the prior art, the optical element injection molding method provided in the invention allows the lubrication film layer to be deposited on the molding cavity through adopting the atom layer deposition method before the injection molding, so the fluidity of a molding material during filling of the molding cavity is substantially improved, and the quality of the finished optical element is improved.
Description
Technical field
The present invention relates to a kind of optical element injection forming method, relate in particular to the little and baroque optical element injection forming method of a kind of size.
Background technology
Generally when injection moulding small size, baroque product, tend to face injection material owing to the mobile performance of material is not good and fill inadequate situation.Especially when the undersized optical element of injection moulding,, therefore when being chosen to type material, just can't well take into account the flowability of moulding material, will increase the difficulty of optical element ejection formation like this owing to need to consider the factors such as optical property of material.
For example; In the jetting formation process of the optical fiber coupled connector of precise structure; Because ULTEMPEI (Polyetherimide) resin has good advantages aspect light source penetrance, mechanical strength and the heat endurance, thereby becomes the preferred material of optical fiber coupled connector injection part.But in actual ejection formation process; When ejaculator screw rod material temperature is set in its glass transition temperature (about 260 ℃) left and right sides; The PEI resin can become and quite have viscous force; Therefore to complex structure, when the less optical fiber coupled connector mould of size is filled, need the special filling effect that high dwell pressure guarantees moulding material that increases.Yet in batch production process, continue to use high pressurize parameter can increase the weight of the load of Jet forming machine, thereby reduce the service life of Jet forming machine, and be difficult to guarantee the uniformity on the injection part dimensions.Therefore, in the process of injection moulding compact sized optical element, when the flowability of injecting forming material is not high, how to guarantee that the quality of optical element injection part just becomes an important topic.
Summary of the invention
In view of this, provide a kind of optical element injection forming method that can improve the Flow of Goods and Materials performance in fact for necessary.
A kind of optical element injection forming method, its comprise the steps: to provide one be used for the optical element ejection formation mould, this mould comprises that one has the die of forming cavity; Adopt the forming cavity surface deposition one deck lubricant film layer of atomic layer deposition method at this die; Use this this optical element of mould ejection formation.
Compared with prior art, this optical element injection forming method provided by the present invention is through adopting atomic layer deposition method at forming cavity surface deposition one deck lubricant film layer before ejection formation; Thereby increased the flowability of moulding material when forming cavity is filled greatly, improved the yield of optical element ejection formation, reduced the parameter of Jet forming machine is set requirement; Increased the stability of product, simultaneously, because the formed thicknesses of layers of atomic layer deposition method can reach atomic level; And therefore accurate controlling diaphragm layer thickness need not worried in forming cavity, to increase rete and the size that influenced optical element, and; Because the little and complex structure of die size of general optical element ejection formation adopts atomic layer deposition method that the die forming cavity is carried out plated film, the die complex structure can not received and the steric hindrance that produces influences; Can carry out comprehensive plated film to forming cavity; Thereby guaranteed the quality of ejection formation product, further, because the unique advantage of atomic layer deposition method; Can allow in same vacuum chamber, to place plural die simultaneously it is carried out the plated film operation, improve the efficient of injection molding manufacture procedure.
Description of drawings
Fig. 1 is the flow chart of the optical element injection forming method that provides of embodiment of the present invention.
Fig. 2 is the process sketch map that in the optical element injection forming method that provides of embodiment of the present invention the forming cavity of die is deposited lubricant film layer.
The main element symbol description
Forming cavity 110
Die 120
The specific embodiment
To combine accompanying drawing that the present invention is done further explain below.
See also Fig. 1, the optical element injection forming method that embodiment of the present invention provided, it comprises the steps:
One mould is provided, and this mould comprises that one has the die of forming cavity;
With this die by disassembling in this mould;
Adopt the forming cavity surface deposition one deck lubricant film layer of atomic layer deposition method at this die;
The die group that deposits this lubricant film layer is gone into this mould, and use this mould to carry out injection moulding.
Please combine Fig. 2, mould (figure do not show) comprises the die 120 with forming cavity 110, with this die 120 by disassembling in this mould.
Then; Adopt the surface deposition one deck lubricant film layer of atomic layer deposition method (atomic layer deposition) at the forming cavity 110 of this die 120; Concrete steps are following; With this die 120 insert one have a heating function vacuum cavity 130, this vacuum cavity 130 has an air inlet 131, an exhaust outlet 132 and a vacuum orifice 133.Be pumped to the certain vacuum degree through 133 pairs of these vacuum cavities 130 of this vacuum orifice; The heater that then starts this vacuum cavity 130 makes the temperature in this vacuum cavity 130 evenly rise to the thermal cracking temperature of waiting to feed gas; Continue to feed first gas reactant then; The surface that this first gas reactant cracking at high temperature takes place and deposits to the forming cavity 110 of this die 120 reaches capacity until the surface of this forming cavity 110; Then bleed again to discharge this vacuum cavity 130 inner first superfluous gas reactants; Feed first gas reactants that second gas reactant made it and be deposited on this forming cavity 110 surfaces at last and react with surface and form uniform lubricant film layer, can control the thickness of the lubricant film layer that is formed on these forming cavity 110 surfaces through repeating above-mentioned steps at this forming cavity 110.
In this embodiment; The ejection formation material PEI resin that is adopted to the optical fiber coupled connector; The surface deposition TiN rete that is employed in the forming cavity 110 of this die 120 increases the greasy property on these forming cavity 110 surfaces, thereby increases the flowability of this PEI resin when this forming cavity 110 is filled.Concrete steps are: at first; Select the organic metal gas that contains Ti for use; For example TiCl4, Ti (N (CH3) 2) 4, Ti (N (C2H5) 2) 4 or Ti (N (CH3) (C2H5)) 4 etc.; This organic metal gas that contains Ti is fed in this vacuum cavity 130, and this organic metal gas that contains Ti at high temperature takes place to make after the cracking Ti+4 to be adsorbed on the surface of this forming cavity 110, and is preferred; In order accurately to control the uniformity that the TiN rete covers; Before the forming cavity 110 to this die 120 carries out the plated film operation, at first active the processing to increase adsorption rate and the stability of Ti+4 on these forming cavity 110 surfaces carried out on the surface of this forming cavity 110, treat that Ti+4 discharges these vacuum cavity 130 inner excess gas after the deposition on the surface of this forming cavity 110 reaches capacity; Feeding Ti+4 that N2 or NH3 made it and be adsorbed on the surface of this forming cavity 110 then reacts and forms the TiN rete with the surface at this forming cavity 110.
At last, will pass through the die of coating film treatment and go into this optical element ejection shaping die for 120 groups, and utilize this optical element ejection shaping die to carry out the injection molding manufacture procedure of optical element then.
This optical element injection forming method through adopting atomic layer deposition method at forming cavity surface deposition one deck lubricant film layer before the ejection formation, thereby has increased the flowability of moulding material when forming cavity is filled greatly; Improve the yield of ejection formation product, reduced the parameter of Jet forming machine is set requirement, increased the stability of product; Simultaneously, because the formed thicknesses of layers of atomic layer deposition method can reach atomic level, and accurate controlling diaphragm layer thickness; Therefore the size that need not worry in forming cavity, to increase rete and influence optical element, and, because the little and complex structure of die size of general optical element ejection formation; Adopt atomic layer deposition method that the die forming cavity is carried out plated film; The steric hindrance that can not receive the die complex structure and produce influences, and can carry out comprehensive plated film to forming cavity, thereby guarantee the quality of ejection formation product; Further; Because the unique advantage of atomic layer deposition method can allow in same vacuum chamber, to place plural die simultaneously it is carried out the plated film operation, has improved the efficient of injection molding manufacture procedure.
Understandable, optical element injection forming method provided by the present invention also is not limited to the injection molding manufacture procedure of optical element, and it also can be used for the molding manufacture procedure at other injection part.
It is understandable that those skilled in the art also can do other variation etc. and be used for design of the present invention in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.These all should be included within the present invention's scope required for protection according to the variation that the present invention's spirit is done.
Claims (4)
1. an optical element injection forming method is characterized in that comprising the steps:
Provide one be used for the optical element ejection formation mould, this mould comprises that one has the die of forming cavity;
Adopt the forming cavity surface deposition one deck lubricant film layer of atomic layer deposition method at this die;
Use this this optical element of mould ejection formation.
2. optical element injection forming method as claimed in claim 1 is characterized in that: to comprising further also before the forming cavity surface deposition lubricant film layer of this die that the forming cavity surface of a pair of this die carries out the step of surface-active-treatment.
3. optical element injection forming method as claimed in claim 2 is characterized in that: this lubricant film layer is the TiN layer.
4. optical element injection forming method as claimed in claim 3 is characterized in that: in this lubricant film layer process of deposition, adopt TiCl
4, Ti (N (CH
3)
2)
4, Ti (N (C
2H
5)
2)
4And Ti (N (CH
3) (C
2H
5))
4One of them adopts N as first gas reactant
2Or NH
3As second gas reactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100282362A CN102615779A (en) | 2011-01-26 | 2011-01-26 | Optical element injection molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100282362A CN102615779A (en) | 2011-01-26 | 2011-01-26 | Optical element injection molding method |
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| CN102615779A true CN102615779A (en) | 2012-08-01 |
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| CN2011100282362A Pending CN102615779A (en) | 2011-01-26 | 2011-01-26 | Optical element injection molding method |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201231242A (en) * | 2011-01-25 | 2012-08-01 | Hon Hai Prec Ind Co Ltd | Method of injection molding an optical element |
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2011
- 2011-01-26 CN CN2011100282362A patent/CN102615779A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201231242A (en) * | 2011-01-25 | 2012-08-01 | Hon Hai Prec Ind Co Ltd | Method of injection molding an optical element |
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Application publication date: 20120801 |