CN205364440U - Different chamber of LED shot -light aspherical lens injection compression heat runner mould - Google Patents
Different chamber of LED shot -light aspherical lens injection compression heat runner mould Download PDFInfo
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- CN205364440U CN205364440U CN201620172656.6U CN201620172656U CN205364440U CN 205364440 U CN205364440 U CN 205364440U CN 201620172656 U CN201620172656 U CN 201620172656U CN 205364440 U CN205364440 U CN 205364440U
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Abstract
The utility model provides a different chamber of LED shot -light aspherical lens injection compression heat runner mould, the mould comprises die carrier, the gating system, guiding mechanism, demoulding mechanism, heating system, compressing mechanism and reversing mechanism, through the spacing spring and the gag lever post effect of compressing mechanism for keep certain compression distance between movable mould board and the compression board, the bottom surface that the movable mould board was pushed to the board will be compressed to clamp force through the injection molding machine for movable mould benevolence mold insert is exerted pressure to the die cavity part of lens separately and is accomplished precision forming. The compression board of compressing mechanism is between movable mould board and cushion to with the cushion and for the moving clamp plate screw rigid connection and with the movable mould board through spacing spring flexonics, the bottom surface gap length of compression board and movable mould board passes through the gag lever post and stop screw realizes. The sprue adopts heat to chew the structure, and the gating system adopts the form in the different chamber of a mould, through the lens die cavity of the different configurations of the reversing mechanism control fuse -element flow direction. The shaping precision and the machining efficiency of this mould are high, and energy saving and consumption reduction is showing the shape of face precision and the optical property that improve lens.
Description
Technical field
This utility model relates to the injection moulding processing mold field of general-purpose plastics and engineering plastics, is specifically related to a kind of LED spotlight non-spherical lens different chamber injection compression hot runner mould.
Background technology
Lens control device as the main smooth shape of LED spotlight, not only can convergent beam, and divergent beams can be produced, it is possible to the light of all angles that LED is sent control effectively.Especially LED illumination non-spherical lens, in improving image quality, effect is notable, the design of various not rounded symmetry hot spots is more flexible so that LED spotlight non-spherical lens is more and more extensive as the light distribution device application in fields such as Landscape Lighting, commercial lighting, industrial and mineral illumination, lighting of home.
LED spotlight non-spherical lens generally adopts optical-grade plastic polymethyl methacrylate (PMMA), Merlon (PC) injection moulding processing, and the aspheric surface characteristic of lens makes its processing and forming more much more difficult than common spherical lens.Light transmittance, surface figure accuracy, surface quality, heat stability, refractive index, turbidity, light shaft coaxle degree etc., as optical grade product, are had strict demand by lens.The wall unevenness of LED spotlight non-spherical lens so that lens density and index distribution are uneven, produce residual stress and birefringent phenomenon, it is difficult to ensure surface figure accuracy and the optical homogeneity property of lens.
The mass defects such as LED spotlight non-spherical lens quality is affected by factors, and the volume contraction inequality of injection molded article, buckling deformation and residual stress are big, especially relevant with the packing state in injection molding technique.Injection moulding is the contraction preventing goods in pressurize mode, and dwell pressure is little, makes feeding not enough, and the molecularly oriented near dwell pressure greatly then cast gate is serious, forms residual stress, causes that product deformation affects precision.The residual stress of lens injection molding is big and distribution width, and birefringence value is big and skewness, and injection molding contraction and birefringence affect surface figure accuracy and the imaging effect of lens.
The LED spotlight non-spherical lens of injection compression hot runner molding processing, not of completely closed at injection stage mold cavity, it is necessary to injection pressure relatively low, be conducive to reducing the shear action between melt and macromolecular orientation degree；At compression stage, die cavity melt is pressed further, pressure distributing very evenly in die cavity., by sprue hot nozzle, running gate system melt state effectively being controlled, energy loss is few meanwhile, reduces solidifying material, and material use efficiency is high, and the processing and forming cycle is short.
LED spotlight non-spherical lens adopts injection compression hot runner mould to obtain, it is possible to reduces residual stress and the buckling deformation of lens, improves the warpage of lens, light transmittance and refractive index, energy-saving and cost-reducing.Owing to the curve form structure of different lens is ever-changing, it is thus desirable to for LED spotlight non-spherical lens, design structure is compacter, compress mechanism's good stability, formed precision and injection in hgher efficiency compresses hot runner mould, meets formed precision and the optical performance requirements of different lens.
Utility model content
The purpose of this utility model is in that to provide a kind of LED spotlight non-spherical lens different chamber injection compression hot runner mould, solve or reduce surface figure accuracy and the optical homogeneity property problems such as the volume contraction inequality of LED spotlight non-spherical lens injection moulding processing existence, buckling deformation and residual stress is big, index distribution is uneven, birefringent phenomenon, improve injection-compression mould and compress reasonable structure and the kinetic stability of mechanism, it is achieved energy-saving and cost-reducing and multi-configuration lens different chamber processing and forming.
The purpose of this utility model is achieved through the following technical solutions.Injection compression hot runner mould in LED spotlight non-spherical lens different chamber is made up of mould bases, running gate system, guiding mechanism, mould emptier, heating system, compression mechanism and changement; by compressing limit spring and the gag lever post effect of mechanism; make to keep between moving platen and compression plate certain compression distance; fixed mold core and mavable module core contact with each other; mavable module core mold insert retains certain compression travel in lens die cavity, and injection machine completes low pressure to cavity injection melt and fills；Compression plate is pushed the bottom surface of moving platen to so that mavable module core mold insert has pressed to the die cavity local of respective lens precise forming by the clamp force of injection machine.The sprue of running gate system adopts hot flow path, namely adopting the hot nozzle structure of sprue, make melt in sprue remain molten condition, again through cold runner and cold cast gate, melt is transported to lens die cavity, thus completing the injection compression hot runner molding processing of LED spotlight non-spherical lens different chamber.
Described LED spotlight non-spherical lens has structural symmetry, light transmittance, the uniformity of refractive index, turbidity etc. are required strict, lens material adopts optical grade PMMA, PC, there is good light transmission and mechanical property, good stability of the dimension, mobility is poor, and shrinkage factor is bigger than normal, it is possible to meet LED spotlight non-spherical lens formed precision and optical performance requirements.
The method for injection compression molding of described LED spotlight non-spherical lens adopts comprehensive compression, the clamp force that injection machine provides is utilized to realize two functional requirements of matched moulds and compression, compression plate is between moving platen and cushion block, and be rigidly connected with cushion block and Bottom clamp plate screw and flexibly connected by limit spring with moving platen, mavable module core mold insert is connected by screw and is arranged on compression plate.The bottom surface of compression plate and moving platen keeps certain interval, and its gap length is realized by gag lever post and stop screw by compression distance.Utilize clamp force to push compression plate the bottom surface of moving platen to after mould Guan Bi, utilize limit spring and gag lever post to realize separating of compression plate and moving platen during mold open, realize the control of the compression to lens die cavity and compression stress thereby through compression mechanism.
The hot-runner method of described LED spotlight non-spherical lens adopts hot nozzle structure, and sprue replaces the sprue bush of injection molding with hot nozzle, and melt enters sub-runner through the heating of overheated nozzle with insulation.Running gate system adopts the form in a different chamber of mould, sub-runner is shaped as S type, controls melt by changement and flows to the lens die cavity of various configuration, and sub-runner cross sectional shape selects U-shaped, die joint is offered fan gate, it is achieved the hot flow path of running gate system and cold runner coexist.
Described LED spotlight non-spherical lens different chamber injection compression hot runner mould; sprue cold slug well adopts inverted cone-shaped structure; during die sinking, lens articles stays dynamic model side; the solidifying material of sub-runner is ejected by a big push rod; and the lens articles of two various configurations is ejected by three equally distributed little push rods or an ejector sleeve, it is achieved mould emptier to lens by the smooth and easy separation of dynamic model die cavity.The independent processing and fabricating of mold insert of lens molding die, is then inserted in mavable module core, and mould structure is simple, low cost of manufacture, it is possible to meet molding lens optical surface accuracy requirement, it is thus achieved that the LED spotlight non-spherical lens of high light transmittance and low-birefringence.
Compared with existing injection molding technology, this utility model has the advantage that.
1, the LED spotlight aspherical lens module of method for injection compression molding is adopted, residual stress and the buckling deformation of molded lens can be reduced, realize melt pressure in low head injection and die cavity to be uniformly distributed, significantly improve the surface figure accuracy of lens, improve the warpage of lens, light transmittance and refractive index, shaping efficiency is high, energy-saving and cost-reducing, meets the optical accuracy requirement of lens.
2, the LED spotlight aspherical lens module of hot-runner method is adopted, by sprue hot nozzle, running gate system melt state is effectively controlled, loading time is short, stowing pressure is low, and energy loss is few, reduces solidifying material, material use efficiency is high, the processing and forming cycle is short, and the volume contraction of lens is uniform and buckling deformation is little, meets the form accuracy requirement of lens.
3, compression mechanism and the changement of hot runner mould is compressed in the different chamber injection of LED spotlight non-spherical lens, the space occupying mould is little, compact conformation, compression distance is easily dimmable, displacement accuracy is high, kinetic stability is good, and the lens of different curve shape and the core of respective configuration thereof and die cavity fitness is good, is effectively improved formed precision and the working (machining) efficiency of mould.
Accompanying drawing explanation
Fig. 1 is the structural front view of this utility model LED spotlight non-spherical lens different chamber injection compression hot runner mould.
Fig. 2 is the structural side view of this utility model LED spotlight non-spherical lens different chamber injection compression hot runner mould.
Fig. 3 is the structure chart that mold cavity is of completely closed.
Fig. 4 is signal-lens front configuration picture.
Fig. 5 is signal-lens back side configuration picture.
Fig. 6 is the front configuration picture of three-in-one lens.
Fig. 7 be three-in-one lens back side configuration picture.
Fig. 8 is the configuration picture of mavable module core.
Fig. 9 is the configuration picture of reversing bar.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
nullAs illustrated in fig. 1 and 2，Injection compression hot runner mould in LED spotlight non-spherical lens different chamber comprises mould bases、Running gate system、Guiding mechanism、Mould emptier、Heating system、The compression part such as mechanism and changement，Main by locating ring 1、Top clamping plate 2、Solid plate 3、Take the lead guide pin bushing 4、Fixed mold core 5、Moving platen 6、Mavable module core 7、Straight guide pin bushing 8、Guide pillar 9、Compression plate 10、Release link 11、Back-moving spring 12、Cushion block 13、Screw 14/16/17/24/31/34/37/39、Bottom clamp plate 15、Push pedal 18、Ejector pin retaining plate 19、Little push rod 20、Limit spring 21、Stop screw 22、Gag lever post 23、Hot nozzle 25、Simple lens 26、Reversing bar 27、Simple lens mavable module core mold insert 28、Simple lens core bar 29、Ejector sleeve 30、Plate 32 fixed by core bar、Big push rod 33、Three-in-one lens core bar 35、Three-in-one lens mavable module core mold insert 36、Three-in-one lens 38 part such as grade forms.In injection machine matched moulds process, utilize the guide pillar 9 of guiding mechanism and take the lead guide pin bushing 4 and straight guide pin bushing 8, it is achieved dynamic model part is accurately positioned with cover half part.At injection stage, acted on by the limit spring 21 and gag lever post 23 compressing mechanism, certain compression distance is kept between moving platen 6 and compression plate 10, fixed mold core 5 and mavable module core 7 contact with each other, mavable module core mold insert 28 and 36 and core bar 29 and 35 in lens die cavity, retain certain compression travel, making mold cavity not completely closed, injection machine completes to fill to cavity injection melt.At compression stage to, by the clamp force of injection machine, compression plate 10 is pushed the bottom surface of moving platen 6 so that mavable module core mold insert 28 and 36 and core bar 29 and 35 to the die cavity local pressure of respective lens 26 and 38, until mold cavity is of completely closed, as shown in Figure 3.In injection moulding machine mould open process, dynamic model part is separated with cover half part, and solidifying for sub-runner material and lens are ejected respectively by big push rod 33 and little push rod 20 with ejector sleeve 30, thus completing the injection compression molding processing of lens different chamber.Injection machine is in the matched moulds process of next cycle of operation, and release link 11 and back-moving spring 12 promote push pedal 18 to return original position.
Simple lens 26 is as shown in Figures 4 and 5, three-in-one lens 38 are as shown in Figures 6 and 7, described LED spotlight non-spherical lens has structural symmetry, light transmittance, the uniformity of refractive index, turbidity etc. being required strict, lens material adopts optical grade PMMA, PC, has good light transmission and mechanical property, good stability of the dimension, mobility is poor, and shrinkage factor is bigger than normal, it is possible to meet LED spotlight non-spherical lens formed precision and optical performance requirements.The vis-a-vis of the end face configuration of fixed mold core 5 and lens 26 and 38 is answered, and mavable module core mold insert 28 is corresponding with the back side of lens 26 and 38 with the end face configuration of 35 with 36 and core bar 29.
The compression mechanism of LED spotlight non-spherical lens different chamber injection compression hot runner mould is mainly made up of parts such as compression plate 10, limit spring 21, stop screw 22, adjusting rods 23, as shown in Figure 1, compression plate 10 is between moving platen 6 and cushion block 13, and is rigidly connected with screw 16 with cushion block 13 and Bottom clamp plate 15 and is flexibly connected by limit spring 21 with moving platen 6.As shown in Figure 2, three-in-one lens mavable module core mold insert 36 is arranged on compression plate 10 by screw 34 connection, and simple lens mavable module core mold insert 28 is arranged on compression plate 10 also through screw connection.The bottom surface of compression plate 10 and moving platen 6 keeps certain interval, and its gap length is realized by gag lever post 23 and stop screw 22 by compression distance.Clamp force is utilized to push compression plate 10 bottom surface of moving platen 6 to after mould Guan Bi, limit spring 21 and gag lever post 23 is utilized to realize separating of compression plate 10 and moving platen 6 during mold open, the length changing gag lever post 23 can regulate maximum compression distance and the restriction to backhaul, realizes the control of the compression to lens die cavity and compression stress thereby through compression mechanism.Compression stage is by applying certain compression stress to mavable module core mold insert and core bar thereof, in die cavity, melt can produce adverse current, the melt making die cavity is adjacent to mold cavity surface further, and this is highly beneficial to the surface figure accuracy improving lens, effectively reduces simultaneously and shrinks the residual stress and variations in refractive index caused.
As shown in Figure 2, the running gate system of LED spotlight non-spherical lens different chamber injection compression hot runner mould is made up of hot flow path and cold runner, sprue replaces the sprue bush of injection molding with hot nozzle 25, melt is through the heating of overheated nozzle 25 and insulation, sub-runner is entered by fixed mold core 5, the pressure loss of melt transmission is less, avoid sprue place and produce solidifying material, the hot nozzle 25 of sprue is not act directly on lens surface but is connected with next stage sub-runner, will not form cast gate cicatrix on lens optical surfaces.Configuration from Fig. 8 mavable module core 7, running gate system adopts the form in a different chamber of mould, sub-runner is shaped as S type, control melt by changement and flow to the lens die cavity of various configuration, sub-runner cross sectional shape selects U-shaped, offers fan gate, and heating system adopts straight-through type pipeline structure and hot oil medium on die joint, effectively prevent lens from producing buckling deformation and residual stress, be conducive to PMMA, PC plastic lens molding processing that mobility is poor.End at S type sub-runner leaves the cold slug well of certain length, so that the melt front cold burden flowing to die cavity by sub-runner from hot runner hot nozzle 25 enters herein, the melt avoiding cooling is directly entered lens die cavity, and melt can slow down its direct impact to lens die cavity by S type sub-runner, make melt filling process as far as possible mild, be effectively improved formed precision and the optical property of lens.From Fig. 9 and in conjunction with Fig. 8, the changement being made up of the reversing bar 27 with hexagon socket head, by rotating the hexagon socket head of reversing bar 27, reversing bar 27 is made to rotate 180 °, its road junction, upper reaches just can be made by a kind of another kind of configuration lens die cavity of configuration lens die cavity alignment, reach to control melt and flow to the purpose of various configuration lens die cavity.
The mould emptier of LED spotlight non-spherical lens different chamber injection compression hot runner mould is mainly made up of parts such as push pedal 18, ejector pin retaining plate 19, big push rod 33, little push rod 20, ejector sleeve 30, release link 11, back-moving springs 12; sprue cold slug well adopts inverted cone-shaped structure, and during die sinking, lens articles stays dynamic model side.From Fig. 1 and Fig. 2 and in conjunction with Fig. 8; sub-runner is coagulated material and is ejected by the core of reversing bar 27 by a big push rod 33; and three-in-one lens 38 goods are ejected by three equally distributed little push rods 20; simple lens 26 goods are ejected by an ejector sleeve 30; in order to all push rods of convenient fixing or ejector sleeve all adopt the monolithic construction with shoulder, it is achieved mould emptier to lens by the smooth and easy separation of dynamic model die cavity.
In sum, a kind of LED spotlight non-spherical lens different chamber injection compression hot runner mould that this utility model adopts method for injection compression molding and hot-runner method comprehensive, the compact conformation of compression mechanism and changement, compression distance is easily dimmable, kinetic stability is good, the lens of different curve shape and the core of respective configuration thereof and die cavity fitness is good, and the residual stress of molded lens is little with buckling deformation, melt pressure in low head injection and die cavity can be realized be uniformly distributed, improve the warpage of lens, light transmittance and refractive index, shaping efficiency is high, energy-saving and cost-reducing, energy loss is few, material use efficiency is high, the processing and forming cycle is short, meet the formed precision of mould and the optical performance requirements of working (machining) efficiency and lens.
Claims (5)
1. a LED spotlight non-spherical lens different chamber injection compression hot runner mould; it is characterized in that: mould is made up of mould bases, running gate system, guiding mechanism, mould emptier, heating system, compression mechanism and changement; by compressing limit spring and the gag lever post effect of mechanism; make to keep between moving platen and compression plate certain compression distance; fixed mold core and mavable module core contact with each other; mavable module core mold insert retains certain compression travel in lens die cavity, and injection machine completes low pressure to cavity injection melt and fills；Compression plate is pushed the bottom surface of moving platen to so that mavable module core mold insert has pressed to the die cavity local of respective lens precise forming by the clamp force of injection machine.
2. LED spotlight non-spherical lens according to claim 1 different chamber injection compression hot runner mould, it is characterised in that: LED spotlight non-spherical lens has structural symmetry, and lens material adopts optical grade PMMA, PC, has good light transmission and mechanical property.
3. LED spotlight non-spherical lens according to claim 1 different chamber injection compression hot runner mould, it is characterized in that: the compression plate of compression mechanism is between moving platen and cushion block, and be rigidly connected with cushion block and Bottom clamp plate screw and flexibly connected by limit spring with moving platen, mavable module core mold insert is connected by screw and is arranged on compression plate；The bottom surface of compression plate and moving platen keeps certain interval, and its gap length is realized by gag lever post and stop screw by compression distance；Utilize clamp force to push compression plate the bottom surface of moving platen to after mould Guan Bi, during mold open, utilize limit spring and gag lever post to realize separating of compression plate and moving platen.
4. LED spotlight non-spherical lens according to claim 1 different chamber injection compression hot runner mould, it is characterized in that: the hot nozzle of sprue replaces the sprue bush of injection molding, running gate system adopts the form in a different chamber of mould, sub-runner is shaped as S type, control melt by changement and flow to the lens die cavity of various configuration, sub-runner cross sectional shape selects U-shaped, offers fan gate on die joint, it is achieved the hot flow path of running gate system and cold runner coexist.
5. LED spotlight non-spherical lens according to claim 1 different chamber injection compression hot runner mould; it is characterized in that: sprue cold slug well adopts inverted cone-shaped structure; during die sinking, lens articles stays dynamic model side; the solidifying material of sub-runner is ejected by a big push rod; and the lens articles of two various configurations is ejected by three equally distributed little push rods or an ejector sleeve, it is achieved mould emptier to lens by the smooth and easy separation of dynamic model die cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172656.6U CN205364440U (en) | 2016-03-08 | 2016-03-08 | Different chamber of LED shot -light aspherical lens injection compression heat runner mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172656.6U CN205364440U (en) | 2016-03-08 | 2016-03-08 | Different chamber of LED shot -light aspherical lens injection compression heat runner mould |
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| CN205364440U true CN205364440U (en) | 2016-07-06 |
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| CN201620172656.6U Expired - Fee Related CN205364440U (en) | 2016-03-08 | 2016-03-08 | Different chamber of LED shot -light aspherical lens injection compression heat runner mould |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426816A (en) * | 2016-12-22 | 2017-02-22 | 东莞烨嘉电子科技有限公司 | Injection mould |
| CN106738679A (en) * | 2016-12-20 | 2017-05-31 | 柳州通为机械有限公司 | A kind of automobile front speculum injection mold |
| CN107160648A (en) * | 2016-03-08 | 2017-09-15 | 五邑大学 | The different chamber injection compression hot runner mould of LED spotlight non-spherical lens |
| CN110126173A (en) * | 2019-05-29 | 2019-08-16 | 宁波联大塑料管件有限公司 | It is a kind of for big thickness PE Flange Adaptor Injection Mold tool and a kind of forming method of PE flange |
| JP7372890B2 (en) | 2020-09-18 | 2023-11-01 | 富士フイルム株式会社 | Manufacturing method for lenses, injection compression molds, and injection molded products |
-
2016
- 2016-03-08 CN CN201620172656.6U patent/CN205364440U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160648A (en) * | 2016-03-08 | 2017-09-15 | 五邑大学 | The different chamber injection compression hot runner mould of LED spotlight non-spherical lens |
| CN106738679A (en) * | 2016-12-20 | 2017-05-31 | 柳州通为机械有限公司 | A kind of automobile front speculum injection mold |
| CN106426816A (en) * | 2016-12-22 | 2017-02-22 | 东莞烨嘉电子科技有限公司 | Injection mould |
| CN110126173A (en) * | 2019-05-29 | 2019-08-16 | 宁波联大塑料管件有限公司 | It is a kind of for big thickness PE Flange Adaptor Injection Mold tool and a kind of forming method of PE flange |
| JP7372890B2 (en) | 2020-09-18 | 2023-11-01 | 富士フイルム株式会社 | Manufacturing method for lenses, injection compression molds, and injection molded products |
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| 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: 20160706 Termination date: 20170308 |
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| CF01 | Termination of patent right due to non-payment of annual fee |