CN105818325B - Thick-sectional part enclosed is layered injection moulding process and its mould structure and lens product - Google Patents
Thick-sectional part enclosed is layered injection moulding process and its mould structure and lens product Download PDFInfo
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- CN105818325B CN105818325B CN201610203351.1A CN201610203351A CN105818325B CN 105818325 B CN105818325 B CN 105818325B CN 201610203351 A CN201610203351 A CN 201610203351A CN 105818325 B CN105818325 B CN 105818325B
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- quadratic form
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Classifications
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- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1642—Making multilayered or multicoloured articles having a "sandwich" structure
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- 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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/27—Thick lenses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
Abstract
Thick-sectional part enclosed is layered injection moulding process and its mould structure and lens product, it is related to injection moulding and its method and apparatus of plastics or plastic state substance, more particularly, to the enclosed layering injection moulding process of heavy wall injecting products and the Special mould structure for implementing this method, and the vehicle lamp light-distributing mirror product using this method manufacture, by configuring intermediate plate between solid plate and moving platen, rotate intermediate plate and carry out core operation, the first station is gone in the intermediate cavity of cavity state after pickup is operated, molding forms product dispensable mould forming cavity；The intermediate plate for being loaded with product dispensable mould is rotated into second station, molding forms the quadratic form forming cavity for being enclosed in product dispensable mould both sides, realize multi-layer injection molding, the flat carry out feeding of suction occurred when the second layer is molded to first layer, so as to ensure that the condensation of product quadratic form is shunk uniformly and shape filling is full, meet the optical performance requirements of headlamp lens, shorten the production cycle, improve the efficiency of injection production.
Description
Technical field
The present invention relates to the injection-molded product and its manufacture method and equipment of plastics or plastic state substance, more particularly to
Enclosed for heavy wall injecting products is layered injection moulding process and the Special mould structure for implementing this method, and uses and be somebody's turn to do
The vehicle lamp light-distributing mirror product of method manufacture.
Background technology
At present, LED headlamps lens has begun to become the trend of car headlamp design, since LED headlights exist
Numerous electronic units, propose requirement, the loss of weight of parts becomes most important method for the Weight control of whole lamp.Due to vapour
The complex geometries such as lens, light guide and the speculum of car light tool, using PC materials (polycarbonate plastic) or BMC material (group
Shape moulding compound) substitute traditional glass optical component then the most feasible, PC substitution glass can mitigate the weight of the nearly half of part.
But since headlamp lens is heavy section casting, as depicted in figs. 1 and 2, the approximate dimensions of product be normally controlled in it is long by 40~
60mm, wide 40~60mm, 25~32mm of thickness, 9 times of the close tradition PC parts of thickness H0 of its thick.Using existing one
Secondary type injection moulding process and device fabrication heavy wall lens, due to dispensable mould core can not feeding, one can be caused in cooling procedure
There is inhaling flat, easy the defects of forming product shrinkage cavity, indenture in the upper and lower surface of secondary type, can not meet the optics of headlamp lens
Performance requirement.
A kind of Chinese invention patent application " hyper-thick pipe transparent plastic part injection molding forming method " (application for a patent for invention number：
201310342435.X application publication number：CN104339534A a kind of hyper-thick pipe transparent plastic part injection molding forming method) is disclosed, is wrapped
Include following steps：The first step, the design of decile wall thickness；Second step, mould prepare；3rd step, is once molded；4th step, it is secondary into
Type；The hyper-thick pipe transparent plastic part injection molding forming method of the present invention is more than or equal to diameter using the CAE analysis technology of Moldflow
60mm wall thickness super thick transparent plastic parts carry out etc. dividing wall thickness to design, and shaping is made by being molded twice in two molds.It is molded into
Use high temperature and pressure injection molding during type, and control higher mold temperature and injection molding external condition is made final twice
Product.A kind of Chinese utility model patent " quadric injection mould mould is used in heavy wall light guide injection " (utility model patent number：
ZL201520087072.4 Authorization Notice No.：CN204658827U a kind of heavy wall light guide injection quadric injection mould mould) is disclosed,
The injection mold is a kind of double-layer injection mold, and the injection mold includes the fixed disk and rotating disk for forming supporting rack,
The solid plate being supported between the fixed disk and rotating disk, the first collapsible form and the second collapsible form, the solid plate phase
Have respectively to two sides and be used for the molding first, second injection molding cavity wall of light guide, first collapsible form has the first one-tenth
Cavity wall, second collapsible form have the second shaping cavity wall, and the first shaping cavity wall composition first is molded into cavity, institute
State the second shaping cavity wall composition second and be molded into cavity.Above-mentioned prior art by thick-layer moulding by being divided into two thin layers
It is molded, plastic can be made faster to be molded and hyper-thick pipe transparent plastic part is made, and product can be eliminated by quadric injection mould
The defects of shrinkage cavity, indenture, weld mark, improve product quality and the yield rate of product.But existing layering injection moulding process is made
Heavy wall moulding be covered structure, as shown in figure 3, the quadratic form 102 of finished product is covered in the upper surface of dispensable mould 101, due to
The flat indenture of suction that dispensable mould lower surface is formed in dispensable mould cooling procedure cannot be filled during quadric injection mould, it is produced
Product can not still meet the optical performance requirements of headlamp lens.
The content of the invention
It can meet that heavy section casting injection can meet the thickness of parts optical property again it is an object of the invention to provide a kind of
Wall is layered injection moulding process, cannot meet design requirement to solve the heavy wall optics of lens performance of existing injection moulding process and device fabrication
Technical problem.Technical solution is used by the present invention solves above-mentioned technical problem：
A kind of thick-sectional part enclosed is layered injection moulding process, for using common turn on general rotating disc type injection molding machine
Disk mould realizes the layering injection of thick-sectional part, it is characterised in that：
Configuration performs the intermediate plate of revolving die core function between the solid plate and moving platen of rotary table mould；
The thick-sectional part enclosed layering injection moulding process includes following injection molding operation step：
S10：By rotating intermediate plate, the first station will be gone in the intermediate cavity of cavity state, be clamped in solid plate I chambers and
Between moving platen I chambers, molding forms product dispensable mould forming cavity；
S20：The introduction valve of the first station is opened, carries out the dispensable mould injection of product, the dispensable mould for being molded formation stays in
Between on chamber, form the intermediate plate for being loaded with product dispensable mould；
S30：Die sinking and pickup operation are performed after temperature reaches die sinking temperature, quadratic form will be completed in previous injection cycle
The finished product of injection is ejected from intermediate cavity；
S40：Rotate intermediate plate and carry out core operation, and molded afterwards in place in core：It is in cavity state after pickup operation
Intermediate cavity go to the first station, be clamped between solid plate I chambers and moving platen I chambers, again mold after form product dispensable mould
Forming cavity；Meanwhile the intermediate plate for being loaded with product dispensable mould rotates to second station, is clamped in solid plate II chambers and moving platen
Between II chambers, the quadratic form forming cavity for being enclosed in product dispensable mould both sides is formed after molding again；
S50：The introduction valve of second station is opened, carries out the quadratic form injection of product, high-temperature injection material is expelled to institute at the same time
The both sides for the intermediate plate for being loaded with product dispensable mould are stated, form the quadratic form of enclosed structure；
If whole injection molding operations are completed to go to step S60, otherwise return to step S20, circulation again and again carries out enclosed
Layering injection is worked continuously；
S60：Die sinking pickup operation is performed after temperature reaches die sinking temperature, the finished product of quadratic form injection will be completed from centre
Ejected in chamber.
A kind of preferable technical solution of the thick-sectional part enclosed layering injection moulding process of the present invention, it is characterised in that described
Die sinking temperature be set as the glass transition temperatures of PC injection molding materials.
A kind of superior technique scheme of the thick-sectional part enclosed layering injection moulding process of the present invention, it is characterised in that secondary
The mould of type injection uses high mold temperature to ensure the steady filling of injection molding material, and to the flat depression energy of suction of dispensable mould both sides appearance
Enough it is carried out at the same time feeding.
A kind of improved technical solution of the thick-sectional part enclosed layering injection moulding process of the present invention, it is characterised in that injection
The temperature of material will ensure that the heating of dispensable mould condensate layer outer surface can be melted into molten state by the injection heat of quadratic form, so that
Avoid the occurrence of product lamination defect.
It is specially designed for implementing above-mentioned enclosed layering injection moulding process it is another object of the present invention to provide one kind
Special mould structure, can by the mould inner structure of mould perform revolving die core, so as to fulfill enclosed be layered be molded, the present invention
Technical solution is used by solving above-mentioned technical problem：
A kind of revolving die core lamps structure for above-mentioned thick-sectional part enclosed layering injection moulding process, for general rotating disc type
The injection mold of injection molding machine, including perform the first station of dispensable mould injection and perform the second station of quadratic form injection；It is special
Sign is：Rotatable intermediate plate is configured between the solid plate and moving platen of rotary table mould, is driven by rotating intermediate plate
First station is molded the product dispensable mould to be formed and goes to second station, realizes the revolving die core function of injection mold；The cover half
Plate includes at least a pair of of solid plate I chambers and solid plate II chambers；The moving platen includes at least a pair of dynamic with solid plate pairing
Template I chambers and moving platen II chambers；The intermediate plate includes intermediate cavity corresponding with solid plate and moving platen cavity, in cavity-like
The intermediate cavity of state is clipped between solid plate I chambers and moving platen I chambers, and molding forms the dispensable mould forming cavity of product；Dispensable mould is molded
What is formed afterwards is loaded with the intermediate plate of product dispensable mould, is clipped between solid plate II chambers and moving platen II chambers, and molding composition is enclosed in
The quadratic form forming cavity of product dispensable mould both sides.
A kind of preferable technical solution of the revolving die core lamps structure of the present invention, for four chamber injection mold of double-station, its
It is characterized in that：The solid plate includes two solid plate I chambers for being located at the first station, and two are determined positioned at second station
Template II chambers；The moving platen includes two moving platen I chambers with the pairing of solid plate I chambers, and two and solid plate II chambers
The moving platen II chambers of pairing；The intermediate plate includes four intermediate cavities, and by rotating intermediate plate, described four intermediate cavities exist
Rotated between first station and second station；The intermediate plate is clipped between solid plate and moving platen, and molding forms two set one
Secondary type forming cavity and two sets of quadratic form forming cavities.
A kind of superior technique scheme of the revolving die core lamps structure of the present invention, it is characterised in that：The intermediate plate is adopted
With the absolute construction for only having an intermediate cavity on every piece of intermediate plate；Corresponding to two-chamber or each sleeve forming of four chamber injection molds
Chamber, is respectively configured one piece of independent intermediate plate.
A kind of preferable technical solution of the revolving die core lamps structure of the present invention, it is characterised in that：The dispensable mould of product with
For quadratic form using wall thickness design is not waited, the wall thickness of the quadratic form meets the requirement of quadratic form forming cavity thin-walled property processing, can
Ensure that the condensation of product quadratic form is shunk uniformly and shape filling is full, meet the optical performance requirements of headlamp lens；It is described
The thickness of dispensable mould depends on the gross thickness of injecting products and the wall thickness of quadratic form.
Before a kind of automobile using the layering injection moulding process manufacture of above-mentioned enclosed
Illuminator lens, to meet the needs of LED headlamps development with rapid changepl. never-ending changes and improvements, the present invention solves above-mentioned technical problem and is used
Technical solution be：
A kind of car headlamp lens using the layering injection moulding process manufacture of above-mentioned thick-sectional part enclosed, its lens master
Body is formed using PC material injections, it is characterised in that：The lens body is molded the inner core formed by dispensable mould and is enclosed in
The quadratic form composition of inner core both sides；The injection molding material of quadratic form is sufficient filling with appearing in inner core both sides in dispensable mould inner core cooling procedure
The flat depression of suction on surface, forms the incidence surface and light-emitting surface of the optical performance requirements for meeting headlamp lens；The note of quadratic form
The condensate layer inner surface that modeling heat is formed when dispensable mould condensate layer outer surface is molded with quadratic form merges completely, forms no layering
Integrated lens main body.
A kind of preferable technical solution of the car headlamp lens of the present invention, it is characterised in that the lens body
Gross thickness is 25~32mm, and the wall thickness of the quadratic form is 3~6mm.
The beneficial effects of the invention are as follows：
1st, thick-sectional part enclosed of the invention layering injection moulding process and its mould structure and lens product, using revolving die
Cored structure realizes multi-layer injection molding, the flat carry out feeding of suction occurred when the second layer is molded to first layer, so as to ensure that product is secondary
Type condensation is shunk uniformly and shape filling is full, meets the optical performance requirements of headlamp lens.
2nd, thick-sectional part enclosed of the invention layering injection moulding process and its mould structure and lens product, by by thickness
Layer laminating injection, easy to make the wall thickness of quadratic form meet the requirement of quadratic form forming cavity thin-walled property processing, can accelerate cold
But process, so as to shorten the production cycle, improves production efficiency.
Brief description of the drawings
Fig. 1 is the three-view diagram of one embodiment of car headlamp lens；
Fig. 2 is the section shape schematic diagram of car headlamp lens；
Fig. 3 is the covered structure schematic diagram using existing layering injection moulding process manufacture heavy wall lens products；
Fig. 4 is the structural representation of the car headlamp lens of enclosed layering injection moulding process manufacture using the present invention
Figure；
Fig. 5 is the forming principle schematic diagram of the thick-sectional part enclosed layering injection moulding process of the present invention；
Fig. 6 is the dynamic model side schematic diagram for the revolving die core lamps structure of above-mentioned enclosed layering injection moulding process；
Fig. 7 is the bicavity mould intermediate plate signal for the revolving die core lamps structure of above-mentioned enclosed layering injection moulding process
Figure；
Fig. 8 is the cover half side schematic diagram for the revolving die core lamps structure of above-mentioned enclosed layering injection moulding process；
Fig. 9 is the four cavity mould intermediate plates signal for the revolving die core lamps structure of above-mentioned enclosed layering injection moulding process
Figure；
Figure 10 is the injection molding operation flow chart of the thick-sectional part enclosed layering injection moulding process of the present invention；
Figure 11 is the dispensable mould injection molding schematic diagram of the thick-sectional part enclosed layering injection moulding process of the present invention；
Figure 12 is the revolving die core action schematic diagram of the thick-sectional part enclosed layering injection moulding process of the present invention；
Figure 13 is the quadratic form injection molding schematic diagram of the thick-sectional part enclosed layering injection moulding process of the present invention.
The reference numeral of each component in each figure above：100- heavy walls lens (car headlamp lens), 101- is once
Type, the dispensable mould condensate layer outer surface that 1011- quadratic forms melt when being molded, 102- quadratic forms (coating), 103- quadratic forms (bag
Perithallium), injection stream when 1030- quadratic forms are molded, the condensate layer formed when 1031- quadratic forms are molded with dispensable mould, 1032- bis-
The condensate layer formed during secondary type injection with mould, 210- solid plates, 211- solid plate I chambers, 212- solid plate II chambers, 220- dynamic models
Plate, 221- moving platen I chambers, 222- moving platen II chambers, 230- intermediate plates, 231- intermediate cavities, 232- are loaded with product dispensable mould
Between plate, 300- manipulators.
Embodiment
For better understanding of the above-mentioned technical proposal of the present invention, carry out with reference to the accompanying drawings and examples further
It is described in detail.
The thick-sectional part enclosed layering injection moulding process of the present invention, it is common for being used on general rotating disc type injection molding machine
Rotary table mould, realize thick-sectional part layering injection；Configure and hold between the solid plate 210 and moving platen 220 of rotary table mould
The intermediate plate 230 of row revolving die core function, embodiment as shown in Figure 10, thick-sectional part enclosed layering injection moulding process bag
Include following steps：
S10：Intermediate plate 230 is rotated using manipulator 300, the first station will be gone in the intermediate cavity 231 of cavity state, is pressed from both sides
Hold between solid plate I chambers 211 and moving platen I chambers 221, molding forms product dispensable mould forming cavity；
S20：The introduction valve of the first station is opened, carries out the dispensable mould injection of product, the dispensable mould for being molded formation stays in
Between on chamber 231, form the intermediate plate 232 for being loaded with product dispensable mould；As shown in figure 11.
S30：Die sinking and pickup operation are performed after temperature reaches die sinking temperature, quadratic form will be completed in previous injection cycle
The finished product of injection is ejected from intermediate cavity 231；
S40：Intermediate plate 230 is rotated using manipulator 300 and carries out core operation, and is molded afterwards in place in core：Pickup
The first station is gone in the intermediate cavity 231 of cavity state after operation, is clamped between solid plate I chambers 211 and moving platen I chambers 221,
Product dispensable mould forming cavity is formed after molding again；Meanwhile the intermediate plate 232 for being loaded with product dispensable mould rotates to the second work
Position, is clamped between solid plate II chambers 212 and moving platen II chambers 222, is formed after molding again and is enclosed in product dispensable mould both sides
Quadratic form forming cavity；Figure 12 is that the thick-sectional part enclosed of the present invention is layered the revolving die core action schematic diagram of injection moulding process, this
Step captures intermediate plate 230 using manipulator 300 and rotates, and carries out core operation, is in cavity state after pickup is operated
Between chamber 231 and be loaded with 232 transposition of intermediate plate of product dispensable mould.
S50：The introduction valve of second station is opened, carries out the quadratic form injection of product, high-temperature injection material is expelled to institute at the same time
The both sides for the intermediate plate 232 for being loaded with product dispensable mould are stated, form the quadratic form of enclosed structure；As shown in figure 13；
If whole injection molding operations are completed to go to step S60, otherwise return to step S20, circulation again and again carries out enclosed
Layering injection is worked continuously；
S60：Die sinking pickup operation is performed after temperature reaches die sinking temperature, the finished product of quadratic form injection will be completed from centre
Ejected in chamber 231.
The forming principle of the thick-sectional part enclosed layering injection moulding process of the present invention is similar to " Sanming City as shown in figure 5, using
Control " injection molding manner, first in the core of the first station injecting products in dispensable mould injection moulding process, then using of the invention again
Enclosed layering injection moulding process, go to second station by the product dispensable mould to be formed is molded in the first station, quadratic form note
During modeling at the same time injecting products incidence surface and light-emitting surface, i.e., by be molded twice reach three layers injection effects.With PC materials
Exemplified by material, as temperature T rises, the density σ of PC materials declines, and for common PC materials, fusing point is T=240 DEG C.PC materials
Material condensate layer can occur in filling process at nearly metallic walls, since plastics are the non-conductors of heat, usually mold temperature setting
For the glass transition temperature (for example, 140 DEG C) of PC materials, the core temperature of product still can be relatively up to 200 DEG C or so at this time, formed
The core not cooled down completely.After mould die sinking, plastics carry out heat exchange with air, and it is slow to core that top layer will be presented in dispensable mould 101
Slow hardening is consolidated, and since PC is the non-conductor of heat, conduction process is more slow.The core of dispensable mould 101 due to can not feeding, cold
But dispensable mould surface can be caused suction occur during flat.After mould die sinking, product dispensable mould 101 is moved to second station progress
The injection of quadratic form, injection mold ensure that injection molding material is steadily filled using high mold temperature, and the stream forward of injection molding material flows into and fills
Full quadratic form forming cavity, whole filling process is as shown in figure 5, the condensate layer 1032 formed when quadratic form is molded with mould fully pastes
Molding tool 210 and 220, the heating of condensate layer 1011 of dispensable mould 101 is melted into molten state by the injection heat of quadratic form, with two
The condensate layer 1031 formed during secondary type injection combines together, so as to avoid the occurrence of product lamination.Meanwhile quadratic form is in wall thickness
It is upper to be handled using thin-walled property (for dispensable mould), ensure to fill in injection moulding process full.
The embodiment of thick-sectional part enclosed layering injection moulding process according to the present invention, the die sinking temperature are set as PC
The glass transition temperature of injection molding material.
The embodiment of thick-sectional part enclosed layering injection moulding process according to the present invention, the mould of quadratic form injection is using high
Mould temperature is to ensure the steady filling of injection molding material, and the flat depression of suction occurred to dispensable mould both sides can be carried out at the same time feeding.
The embodiment of thick-sectional part enclosed layering injection moulding process according to the present invention, the temperature of injection molding material will ensure secondary
Dispensable mould condensate layer outer surface 1011 can be heated and be melted into molten state by the injection heat of type, so as to avoid the occurrence of product point
Layer defects.
Fig. 6 to Fig. 8 is the one of the revolving die core lamps structure of the thick-sectional part enclosed layering injection moulding process for the present invention
A embodiment, for the injection mold of general rotating disc type injection molding machine, in the Fig. 6 into embodiment illustrated in fig. 8, injection mold is double
Two station turnplate mould of chamber, including perform the first station of dispensable mould injection and perform the second station of quadratic form injection；Turning
Rotatable intermediate plate 230 is configured between the solid plate 210 and moving platen 220 of disk mould, rotates intermediate plate using manipulator 300
230, drive and be molded the product dispensable mould to be formed in the first station and go to second station, realize the revolving die core function of injection mold；
The solid plate 210 includes at least a pair of solid plate I chambers 211 and solid plate II chambers 212；The moving platen 220 is included extremely
Few a pair of moving platen I chambers 221 and moving platen II chambers 222 matched with solid plate 210；The intermediate plate 230 includes and cover half
Plate and the corresponding intermediate cavity 231 of moving platen cavity, solid plate I chambers 211 and moving platen I are clipped in the intermediate cavity 231 of cavity state
Between chamber 221, molding forms the dispensable mould forming cavity of product；The intermediate plate for being loaded with product dispensable mould formed after dispensable mould injection
232, it is clipped between solid plate II chambers 212 and moving platen II chambers 222, molding forms and is enclosed in the two of 101 both sides of product dispensable mould
Secondary type forming cavity.
Another embodiment of the revolving die core lamps structure of thick-sectional part enclosed layering injection moulding process according to the present invention,
The revolving die core lamps structure is used for four chamber injection mold of double-station, and Fig. 9 is revolving die core lamps structure using the present invention
The structure diagram of four chamber injection mold intermediate plates, the solid plate 210 include two solid plate I chambers for being located at the first station
211, and two solid plate II chambers 212 for being located at second station；The moving platen 220 includes two and solid plate I chambers 211
The moving platen I chambers 221 of pairing, and two moving platen II chambers 222 matched with solid plate II chambers 212；The intermediate plate 230
Including four intermediate cavities 231, by rotating intermediate plate 230, described four intermediate cavities 231 the first station and second station it
Between rotate；The intermediate plate 230 is clipped between solid plate 210 and moving platen 220, molding form two sets dispensable mould forming cavities with
Two sets of quadratic form forming cavities.Using the revolving die core lamps structure of the present embodiment, two can be completed at the same time in an injection cycle
The injection of part product dispensable mould and two pieces product quadratic form, so that injection production efficiency doubles.
Another embodiment of the revolving die core lamps structure of thick-sectional part enclosed layering injection moulding process according to the present invention,
The intermediate plate 230 is using the absolute construction for only having an intermediate cavity 231 on every piece of intermediate plate 230；Corresponding to two-chamber or four
Every suit forming cavity of chamber injection mold, is respectively configured one piece of independent intermediate plate 230.
One of the revolving die core lamps structure of thick-sectional part enclosed layering injection moulding process according to the present invention is preferable to carry out
Example, for the dispensable mould 101 of product with quadratic form 103 using wall thickness design is not waited, the wall thickness H 2 of the quadratic form 103 meets quadratic form
The requirement of forming cavity thin-walled property processing, can ensure that the condensation of product quadratic form is shunk uniformly and shape filling is full, be shone before meeting
The optical performance requirements of lamp lens；The thickness H1 of the dispensable mould 101 depends on the gross thickness H0 and quadratic form of injecting products
103 wall thickness H 2.
One embodiment such as Fig. 4 of the car headlamp lens of enclosed layering injection moulding process manufacture using the present invention
Shown, its lens body is formed using PC material injections, and the lens body is molded the inner core formed and encirclement by dispensable mould
Quadratic form in inner core both sides forms；The injection molding material of quadratic form is sufficient filling with appearing in inner core two in dispensable mould inner core cooling procedure
The flat depression of suction of side surface, forms the incidence surface and light-emitting surface of the optical performance requirements for meeting headlamp lens；Quadratic form
The condensate layer inner surface 1031 that injection heat is formed when dispensable mould condensate layer outer surface 1011 is molded with quadratic form merges completely,
Form the integrated lens main body without layering.
The preferred embodiment of the car headlamp lens of enclosed layering injection moulding process manufacture using the present invention, it is described
The gross thickness H0 of lens body is 25~32mm, and the wall thickness H 2 of the quadratic form 103 is 3~6mm.
The technique effect of thick-layer plastic enclosed layering injection moulding process using the present invention and existing individual layer injection moulding process
Comparative result see the table below：
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to the explanation present invention's
Technical solution, and be not used as limitation of the invention, any connotation based on the present invention is to embodiment described above
Change, the modification made, will all fall in the scope of the claims of the present invention.
Claims (10)
1. a kind of thick-sectional part enclosed is layered injection moulding process, for using common turntable on general rotating disc type injection molding machine
Mould realizes the layering injection of thick-sectional part, it is characterised in that：
Configuration performs the intermediate plate of revolving die core function between the solid plate and moving platen of rotary table mould；
The thick-sectional part enclosed layering injection moulding process includes following injection molding operation step：
S10：By rotating intermediate plate, the first station will be gone in the intermediate cavity of cavity state, be clamped in solid plate I chambers and dynamic model
Between plate I chambers, molding forms product dispensable mould forming cavity；
S20：The introduction valve of the first station is opened, carries out the dispensable mould injection of product, the dispensable mould for being molded formation stays in intermediate cavity
On, form the intermediate plate for being loaded with product dispensable mould；
S30：Die sinking and pickup operation are performed after temperature reaches die sinking temperature, quadratic form injection will be completed in previous injection cycle
Finished product ejected from intermediate cavity；
S40：Rotate intermediate plate and carry out core operation, and molded afterwards in place in core：It is in cavity state after pickup operation
Between chamber go to the first station, be clamped between solid plate I chambers and moving platen I chambers, the shaping of product dispensable mould formed after molding again
Chamber；Meanwhile the intermediate plate for being loaded with product dispensable mould rotates to second station, solid plate II chambers and moving platen II chambers are clamped in
Between, form the quadratic form forming cavity for being enclosed in product dispensable mould both sides after molding again；
S50：The introduction valve of second station is opened, carries out the quadratic form injection of product, high-temperature injection material is expelled to the load at the same time
There are the both sides of the intermediate plate of product dispensable mould, form the quadratic form of enclosed structure；
If whole injection molding operations are completed to go to step S60, otherwise return to step S20, circulation again and again carries out enclosed layering
Injection is worked continuously；
S60：Die sinking pickup operation is performed after temperature reaches die sinking temperature, the finished product of quadratic form injection will be completed from intermediate cavity
Ejection.
2. thick-sectional part enclosed according to claim 1 is layered injection moulding process, it is characterised in that the die sinking temperature
It is set as the glass transition temperature of PC injection molding materials.
3. thick-sectional part enclosed according to claim 1 is layered injection moulding process, it is characterised in that the mould of quadratic form injection
Tool uses high mold temperature to ensure the steady filling of injection molding material, and the flat depression of suction occurred to dispensable mould both sides can be carried out at the same time
Feeding.
4. thick-sectional part enclosed according to claim 1 is layered injection moulding process, it is characterised in that the temperature of injection molding material will
Ensure that the injection heat of quadratic form can heat dispensable mould condensate layer outer surface and be melted into molten state, so as to avoid the occurrence of production
Product lamination defect.
5. a kind of revolving die core lamps structure of thick-sectional part enclosed layering injection moulding process for described in claim 1, is used for
The injection mold of general rotating disc type injection molding machine, including perform the first station of dispensable mould injection and execution quadratic form are molded second
Station；It is characterized in that：Rotatable intermediate plate is configured between the solid plate and moving platen of rotary table mould, among rotating
Strip, which is moved, to be molded the product dispensable mould to be formed in the first station and goes to second station, realizes the revolving die core function of injection mold；Institute
The solid plate stated includes at least a pair of of solid plate I chambers and solid plate II chambers；The moving platen includes at least a pair of and solid plate
The moving platen I chambers and moving platen II chambers of pairing；The intermediate plate includes intermediate cavity corresponding with solid plate and moving platen cavity,
It is clipped in the intermediate cavity of cavity state between solid plate I chambers and moving platen I chambers, molding forms the dispensable mould forming cavity of product；One
The intermediate plate for being loaded with product dispensable mould formed after secondary type injection, is clipped between solid plate II chambers and moving platen II chambers, molds structure
Into the quadratic form forming cavity for being enclosed in product dispensable mould both sides.
6. revolving die core lamps structure according to claim 5, it is characterised in that：The solid plate includes two positioned at the
The solid plate I chambers of one station, and two solid plate II chambers for being located at second station；The moving platen includes two and cover half
The moving platen I chambers of plate I chambers pairing, and two moving platen II chambers matched with solid plate II chambers；The intermediate plate includes four
A intermediate cavity, by rotating intermediate plate, described four intermediate cavities rotate between the first station and second station；In described
Between plate be clipped between solid plate and moving platen, molding forms two sets of dispensable mould forming cavities and two sets of quadratic form forming cavities.
7. revolving die core lamps structure according to claim 5, it is characterised in that：The intermediate plate uses every piece of intermediate plate
The absolute construction of a upper only intermediate cavity；Corresponding to two-chamber or every suit forming cavity of four chamber injection molds, one is respectively configured
The intermediate plate of block independence.
8. revolving die core lamps structure according to claim 5, it is characterised in that：The dispensable mould of product is with quadratic form using not
Designed Deng wall thickness, the wall thickness of the quadratic form meets the requirement of quadratic form forming cavity thin-walled property processing, can ensure that product is secondary
Type condensation is shunk uniformly and shape filling is full, meets the optical performance requirements of headlamp lens；The thickness of the dispensable mould
Depending on the gross thickness of injecting products and the wall thickness of quadratic form.
9. a kind of car headlamp lens using thick-sectional part enclosed layering injection moulding process manufacture described in claim 1,
Its lens body is formed using PC material injections, it is characterised in that：The lens body is molded the inner core formed by dispensable mould
Formed with the quadratic form for being enclosed in inner core both sides；The injection molding material of quadratic form is sufficient filling with appearing in dispensable mould inner core cooling procedure
The flat depression of suction of inner core both side surface, forms the incidence surface and light-emitting surface of the optical performance requirements for meeting headlamp lens；Two
The condensate layer inner surface that the injection heat of secondary type is formed when dispensable mould condensate layer outer surface is molded with quadratic form merges completely, shape
Into the integrated lens main body of no layering.
10. car headlamp lens according to claim 9, it is characterised in that the gross thickness of the lens body is 25
~32mm, the wall thickness of the quadratic form is 3~6mm.
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| CN201610203351.1A CN105818325B (en) | 2016-04-01 | 2016-04-01 | Thick-sectional part enclosed is layered injection moulding process and its mould structure and lens product |
| PCT/CN2016/090384 WO2017166543A1 (en) | 2016-04-01 | 2016-07-19 | Surrounding layered injection molding method for thick-wall plastic parts, mold structure therefor and lens product |
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| CN201610203351.1A CN105818325B (en) | 2016-04-01 | 2016-04-01 | Thick-sectional part enclosed is layered injection moulding process and its mould structure and lens product |
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Address after: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee after: Hua Yu vision technology (Shanghai) Co., Ltd. Address before: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee before: Xiaoxi Car Lights Co., Ltd., Shanghai |
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