CN104842524A - Plastic optical lens injection molding mold exhaust system - Google Patents
Plastic optical lens injection molding mold exhaust system Download PDFInfo
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- CN104842524A CN104842524A CN201510193024.8A CN201510193024A CN104842524A CN 104842524 A CN104842524 A CN 104842524A CN 201510193024 A CN201510193024 A CN 201510193024A CN 104842524 A CN104842524 A CN 104842524A
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- air discharge
- discharge duct
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- layer air
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a plastic optical lens injection molding mold exhaust system. The system is characterized in that joints of two ends of the transverse axis of a mold core and a mold frame are provided with side exhaust ducts, the outer edge surface of the joint of the cavity of the core and a parting surface of the mold core is provided with a C-shaped exhaust system, the outer side of the cavity is provided with a first layer of an exhaust duct, the outer side of the first layer of the exhaust duct is provided with a second layer of an exhaust duct, the first layer of the exhaust duct is provided with the second layer of the exhaust duct, the second layer of the exhaust duct is located on the transverse axis of the mold core, the cavity and a third layer of the exhaust duct are communicated by the second layer of the exhaust duct, a parting surface exhaust duct A is arranged between the third layer of the exhaust duct and the side exhaust duct, and the parting surface exhaust duct A is located on the transverse axis of the mold core. The plastic optical lens injection molding mold exhaust system realizes plastic optical lens injection molding mold exhaust, and realizes complete removal of gas and elimination of melt internal stress. The mold with the plastic optical lens injection molding mold exhaust system satisfies product molding requirements.
Description
Technical field
The invention belongs to the technical field of the mould producing optical mirror slip with Shooting Technique, especially a kind of Plastic optics injection mold gas extraction system.
Background technology
Injection mold belongs to swaging die, has large quantity of air in die cavity, when fused raw material enters die cavity fast, these air to be discharged in time, meanwhile, when fused raw material is in die cavity after forming and hardening during die sinking, can produce vacuum between optical mirror slip and die cavity wall, air must enter in time.Due to this defect of injection moulding itself, for the optical articles that injection moulding is high-accuracy, there are problems, as optical articles surface forms current mark, gas line, seam, surface profile is unclear, the phenomenons such as filling is difficult or burn, injection pressure must be strengthened, cause die cavity softened and form overlap, also generation high temperature may be compressed by air, cause local, optical articles gather qi together place to burn, the exhausting problem of mould has become and has ensured that accurate aspheric optical lens product quality urgently and the problem solved.
Summary of the invention
The object of the invention is the problems referred to above existed for existing technology, provide a kind of Plastic optics injection mold gas extraction system, the invention solves the exhausting problem of accurate aspheric optical lens mould, can by sprue, die cavity and fused raw material carry the eliminating completely of gas, eliminate melt internal stress, make the mould with this gas extraction system meet accurate aspheric optical lens forming requirements.
For this reason, the technical solution that the present invention takes is:
A kind of Plastic optics injection mold gas extraction system, comprise core rod, sprue, core, mould bases, described core rod is fixed in described mould bases, described core rod central part is provided with two symmetrical described cores, two described cores are communicated with by described sprue, axis of pitch both ends and the described mould bases junction of described core rod are provided with side air discharge duct, the die cavity of described core and the die joint junction epitaxial surface of described core rod are provided with C type gas extraction system, the outside of described die cavity is provided with ground floor air discharge duct, the outside of described ground floor air discharge duct is provided with second layer air discharge duct, described ground floor air discharge duct is provided with second layer air discharge duct, described second layer air discharge duct is positioned on the axis of pitch of described core rod, described second layer air discharge duct is communicated with described die cavity and described third layer air discharge duct, die joint air discharge duct A is provided with between described third layer air discharge duct and described side air discharge duct, described die joint air discharge duct A is positioned on the axis of pitch of described core rod.
As preferred further, the symmetry axis of described ground floor air discharge duct, described second layer air discharge duct, described third layer air discharge duct and described die joint air discharge duct A on the same line.
As preferred further, described ground floor air discharge duct is provided with ground floor backflash, described third layer air discharge duct is provided with third layer backflash, and described ground floor backflash and described third layer backflash are arranged at described second layer air discharge duct and described die joint air discharge duct A junction.
As preferred further, described ground floor air discharge duct is C type structure.
As preferred further, described third layer air discharge duct is C type structure.
As preferred further, described third layer air discharge duct both wings are respectively equipped with die joint air discharge duct B and die joint air discharge duct C, and described die joint air discharge duct B end is provided with described side air discharge duct, and described die joint air discharge duct C end is provided with described side air discharge duct.
As preferred further, the groove depth of described ground floor air discharge duct is 0.005mm ~ 0.03mm, and the groove depth of described second layer air discharge duct is 0.05mm ~ 0.2mm, and the groove depth of described third layer air discharge duct is 0.020.3mm ~ 0.5mm.
As preferred further, described ground floor air discharge duct bottom surface is higher than described second layer air discharge duct bottom surface, and described second layer air discharge duct bottom surface is higher than described third layer air discharge duct bottom surface.
As preferred further, the groove width of described ground floor air discharge duct is 1mm ~ 3mm, and the groove width of described second layer air discharge duct is 3mm ~ 10mm, and the groove width of described third layer air discharge duct is 4mm ~ 8mm.
As preferred further, be described sprue between the two ends of described ground floor air discharge duct and described third layer air discharge duct, it is that to form segment angle be 30 ° ~ 60 ° for 30 ° ~ 60 ° or the center of described die cavity and the two ends of described third layer air discharge duct 403 that the center of described die cavity and described ground floor air discharge duct two ends form segment angle.
The beneficial effect of technique scheme is:
The present invention is provided with gas extraction system on die joint, type intracavity gas can from ground floor air discharge duct to third layer air discharge duct, then discharge along die joint air discharge duct A from side air discharge duct, also from second layer air discharge duct to third layer air discharge duct, then can discharge along die joint air discharge duct A from side air discharge duct; Third layer air discharge duct and die joint air discharge duct A junction are provided with ground floor backflash and third layer backflash, are conducive to reducing cavity pressure fast, the resistance of pressure and fused raw material is reduced, can not cause localized hyperthermia; The both wings of third layer air discharge duct are provided with die joint air discharge duct B and die joint air discharge duct C, third layer air discharge duct groove width is 1 times ~ 8 times of ground floor air discharge duct groove width, third layer air discharge duct groove depth is 10 times ~ 100 times of ground floor air discharge duct groove depth, discharge in the groove that Exhaust Gas can enter larger volume fast, effectively reduce the residual formation surface flow marks of internal stress in melt inside, improve the presentation quality of accurate aspheric optical lens product, meet accurate aspheric optical lens forming requirements; Exhaust system structure of the present invention is simple, is conducive to the raising of product quality and is convenient to industrialization promotion.
Accompanying drawing explanation
Fig. 1 is the structural representation of Plastic optics injection mold gas extraction system (embodiment 1) of the present invention.
Fig. 2 is the structural representation of Plastic optics injection mold gas extraction system (embodiment 2) of the present invention.
Fig. 3 is the structural representation of Plastic optics injection mold gas extraction system (embodiment 3) of the present invention.
Fig. 4 is the partial enlarged drawing (embodiment 3) of gas extraction system of the present invention.
Fig. 5 is the core rod perspective view of Plastic optics injection mold gas extraction system (embodiment 1) of the present invention.
Fig. 6 is the assembling perspective view of Plastic optics injection mold gas extraction system (embodiment 1) of the present invention.
In figure: 1, core rod; 2, sprue; 3, core; 4, gas extraction system; 5, mould bases; 101, die joint; 102, side air discharge duct; 301, die cavity; 401, ground floor air discharge duct; 402, second layer air discharge duct; 403, third layer air discharge duct; 404, die joint air discharge duct A; 405a, third layer backflash; 405b, ground floor backflash; 406a, die joint air discharge duct B; 407a, die joint air discharge duct C.
Detailed description of the invention
For making the features and advantages of the invention clearly, be described below in conjunction with specific embodiment.
Embodiment 1:
As Fig. 1, Fig. 4, Fig. 5, shown in Fig. 6, a kind of Plastic optics injection mold gas extraction system, comprise core rod 1, sprue 2, core 3, mould bases 5, described core rod 1 is fixed in described mould bases 5, described core rod 1 central part is provided with two symmetrical described cores 3, two described cores 3 are communicated with by described sprue 2, axis of pitch both ends and described mould bases 5 junction of described core rod 1 are provided with side air discharge duct 102, the die cavity 301 of described core 3 is provided with C type gas extraction system 4 with the die joint 101 junction epitaxial surface of described core rod 1, the outside of described die cavity 301 is provided with ground floor air discharge duct 401, the outside of described ground floor air discharge duct 401 is provided with second layer air discharge duct 403, described ground floor air discharge duct 401 is provided with second layer air discharge duct 402, described second layer air discharge duct 402 is positioned on the axis of pitch of described core rod 1, described second layer air discharge duct 402 is communicated with described die cavity 301 and described third layer air discharge duct 403, die joint air discharge duct A404 is provided with between described third layer air discharge duct 403 and described side air discharge duct 102, described die joint air discharge duct A404 is positioned on the axis of pitch of described core rod 1.
Embodiment 2:
Identical with embodiment 1, but as shown in Figure 2, described third layer air discharge duct 403 is provided with third layer backflash 405a, described ground floor air discharge duct 401 is provided with ground floor backflash 405b, and described third layer backflash 405a and described ground floor backflash 405b is arranged at described second layer air discharge duct 402 and described die joint air discharge duct A404 junction; Making to discharge air in die cavity 301 more easily enters in third layer air discharge duct 403 and die joint air discharge duct A404, can not form gas in third layer air discharge duct 403 and die joint air discharge duct A404 junction deposit and form flow-disturbing, backflow affects the inherent injection moulding of die cavity 301.
Embodiment 3:
Identical with embodiment 2, but as shown in Figure 3 and Figure 4, described ground floor air discharge duct 401 is C type structure, described third layer air discharge duct 403 is C type structure, C type structure can cannelure or rectangular channel, described third layer air discharge duct 403 both wings are respectively equipped with die joint air discharge duct B406a and die joint air discharge duct C407a, described die joint air discharge duct B406a end is provided with described side air discharge duct 102, described die joint air discharge duct C407a end is provided with described side air discharge duct 102, if do not arrange from die joint air discharge duct B406a and die joint air discharge duct C407a, after ground floor air discharge duct 401 Exhaust Gas enters third layer air discharge duct 403, run into baffling after third layer air discharge duct 403 lateral wall, die joint air discharge duct A is entered along third layer air discharge duct 403, then discharge from side air discharge duct 102, easily turbulent flow is formed at ground floor air discharge duct 401 and third layer air discharge duct 403 contact surface when gas is arranged outside, obstruction air discharges, thus cause accurate aspheric optical lens product formation mass defect.
In above-described embodiment, as shown in Fig. 1 ~ Fig. 6, the symmetry axis of described ground floor air discharge duct 401, described second layer air discharge duct 402, described third layer air discharge duct 403 and described die joint air discharge duct A404 on the same line, the groove depth of described ground floor air discharge duct 401 is 0.005mm ~ 0.03mm, the groove depth of described second layer air discharge duct 402 is 0.05mm ~ 0.2mm, the groove depth of described third layer air discharge duct 403 is 0.3mm ~ 0.5mm, described ground floor air discharge duct 401 bottom surface is higher than described second layer air discharge duct 402 bottom surface, described second layer air discharge duct 402 bottom surface is higher than described third layer air discharge duct 403 bottom surface, the groove width of described ground floor air discharge duct 401 is 1mm ~ 3mm, the groove width of described second layer air discharge duct 402 is 3mm ~ 10mm, the groove width of described third layer air discharge duct 403 is 4mm ~ 8mm, the groove depth of ground floor air discharge duct 401 is more shallow than the groove depth of second layer air discharge duct 402, second layer air discharge duct 402 is more shallow than the groove depth of third layer air discharge duct 403, ground floor air discharge duct 401 groove width is narrower than second layer air discharge duct groove width, block in the longitudinal section of ground floor air discharge duct 401 with third layer air discharge duct 403 after making to enter the gas baffling in third layer air discharge duct 403 from ground floor air discharge duct 401, die joint air discharge duct A404 is entered along third layer air discharge duct 403, then discharge from side air discharge duct 102, simultaneously, during die sinking, second layer air discharge duct 402 groove width is consistent with die joint air discharge duct A404 groove width, gas can be made to enter die cavity 301 fast, realize vacuum pumping.
In above-described embodiment, as shown in Fig. 1 ~ Fig. 6, it is described sprue 2 between the two ends of described ground floor air discharge duct 401 and described third layer air discharge duct 403, it is that to form segment angle be 30 ° ~ 60 ° for 30 ° ~ 60 ° or the center of described die cavity 301 and the two ends of described third layer air discharge duct 403 that the center of described die cavity 301 and described ground floor air discharge duct 401 two ends form segment angle, avoid impacting the temperature of the fused raw material in sprue 2, local non-uniform temperature when making shaping, cause gas line or surface profile unclear etc.
Operation principle: fused raw material is injected formation gas in die cavity 301 by sprue 2 and divides three phases to discharge by gas extraction system 4,
A: sprue 2 is inner, die cavity 301 is inner and fused raw material carries gas, slowly discharges from ground floor air discharge duct 401, second layer air discharge duct 402, third layer air discharge duct 403, when fluid stable, fills die cavity 301;
B: when fused raw material fills die cavity 301 to 90%, residual gas is fully discharged from second layer air discharge duct 402 or core 3 surrounding, and all gas all converges in third layer air discharge duct 403, then discharges mould along die joint air discharge duct A404 from side air discharge duct 102;
C: in die cavity 301, melt enters packing stage, melt fully fills die cavity, residual gas is discharged from ground floor air discharge duct 401, second layer air discharge duct 402, third layer air discharge duct 403 respectively, realizes that sprue 2 is inner, die cavity 301 inner and fused raw material carries gas and discharges completely.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in protection scope of the present invention.
Claims (10)
1. a Plastic optics injection mold gas extraction system, comprise core rod, sprue, core, mould bases, described core rod is fixed in described mould bases, described core rod central part is provided with two symmetrical described cores, two described cores are communicated with by described sprue, it is characterized in that: axis of pitch both ends and the described mould bases junction of described core rod are provided with side air discharge duct, the die cavity of described core and the die joint junction epitaxial surface of described core rod are provided with C type gas extraction system, the outside of described die cavity is provided with ground floor air discharge duct, the outside of described ground floor air discharge duct is provided with second layer air discharge duct, described ground floor air discharge duct is provided with second layer air discharge duct, described second layer air discharge duct is positioned on the axis of pitch of described core rod, described second layer air discharge duct is communicated with described die cavity and described third layer air discharge duct, die joint air discharge duct A is provided with between described third layer air discharge duct and described side air discharge duct, described die joint air discharge duct A is positioned on the axis of pitch of described core rod.
2. Plastic optics injection mold gas extraction system according to claim 1, is characterized in that: the symmetry axis of described ground floor air discharge duct, described second layer air discharge duct, described third layer air discharge duct and described die joint air discharge duct A on the same line.
3. Plastic optics injection mold gas extraction system according to claim 1, it is characterized in that: described ground floor air discharge duct is provided with ground floor backflash, described third layer air discharge duct is provided with third layer backflash, and described ground floor backflash and described third layer backflash are arranged at described second layer air discharge duct and described die joint air discharge duct A junction.
4. Plastic optics injection mold gas extraction system according to claim 1, is characterized in that: described ground floor air discharge duct is C type structure.
5. Plastic optics injection mold gas extraction system according to claim 1, is characterized in that: described third layer air discharge duct is C type structure.
6. Plastic optics injection mold gas extraction system according to claim 5, it is characterized in that: described third layer air discharge duct both wings are respectively equipped with die joint air discharge duct B and die joint air discharge duct C, described die joint air discharge duct B end is provided with described side air discharge duct, and described die joint air discharge duct C end is provided with described side air discharge duct.
7. Plastic optics injection mold gas extraction system according to claim 1, it is characterized in that: the groove depth of described ground floor air discharge duct is 0.005mm ~ 0.03mm, the groove depth of described second layer air discharge duct is 0.05mm ~ 0.2mm, and the groove depth of described third layer air discharge duct is 0.3mm ~ 0.5mm.
8. Plastic optics injection mold gas extraction system according to claim 7, is characterized in that: described ground floor air discharge duct bottom surface is higher than described second layer air discharge duct bottom surface, and described second layer air discharge duct bottom surface is higher than described third layer air discharge duct bottom surface.
9. Plastic optics injection mold gas extraction system according to claim 1, it is characterized in that: the groove width of described ground floor air discharge duct is 1mm ~ 3mm, the groove width of described second layer air discharge duct is 3mm ~ 10mm, and the groove width of described third layer air discharge duct is 4mm ~ 8mm.
10. Plastic optics injection mold gas extraction system according to claim 1, it is characterized in that: for described sprue between the two ends of described ground floor air discharge duct and described third layer air discharge duct, it is that to form segment angle be 30 ° ~ 60 ° for 30 ° ~ 60 ° or the center of described die cavity and the two ends of described third layer air discharge duct 403 that the center of described die cavity and described ground floor air discharge duct two ends form segment angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510193024.8A CN104842524A (en) | 2015-04-22 | 2015-04-22 | Plastic optical lens injection molding mold exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510193024.8A CN104842524A (en) | 2015-04-22 | 2015-04-22 | Plastic optical lens injection molding mold exhaust system |
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| Publication Number | Publication Date |
|---|---|
| CN104842524A true CN104842524A (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510193024.8A Pending CN104842524A (en) | 2015-04-22 | 2015-04-22 | Plastic optical lens injection molding mold exhaust system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437356A (en) * | 2018-03-13 | 2018-08-24 | 苏州精锐精密机械有限公司 | Injection mold |
| CN110843169A (en) * | 2019-12-04 | 2020-02-28 | 东莞市旭瑞光电科技有限公司 | Lens forming system and forming method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1158458A (en) * | 1997-08-26 | 1999-03-02 | Canon Inc | Injection mold, device and method for injection molding |
| CN201881528U (en) * | 2010-12-10 | 2011-06-29 | 成都奥晶科技有限责任公司 | Reproduction mold for manufacturing diffractive optic lens |
| CN204773389U (en) * | 2015-04-22 | 2015-11-18 | 成都奥晶科技有限责任公司 | Plastics optical glass injection mold exhaust system |
-
2015
- 2015-04-22 CN CN201510193024.8A patent/CN104842524A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1158458A (en) * | 1997-08-26 | 1999-03-02 | Canon Inc | Injection mold, device and method for injection molding |
| CN201881528U (en) * | 2010-12-10 | 2011-06-29 | 成都奥晶科技有限责任公司 | Reproduction mold for manufacturing diffractive optic lens |
| CN204773389U (en) * | 2015-04-22 | 2015-11-18 | 成都奥晶科技有限责任公司 | Plastics optical glass injection mold exhaust system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108437356A (en) * | 2018-03-13 | 2018-08-24 | 苏州精锐精密机械有限公司 | Injection mold |
| CN108437356B (en) * | 2018-03-13 | 2024-03-08 | 苏州精锐精密机械有限公司 | Injection mold |
| CN110843169A (en) * | 2019-12-04 | 2020-02-28 | 东莞市旭瑞光电科技有限公司 | Lens forming system and forming method thereof |
| TWI718885B (en) * | 2019-12-04 | 2021-02-11 | 大陸商東莞市旭瑞光電科技有限公司 | Lens molding system and molding method thereof |
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Application publication date: 20150819 |