CN107225740A - The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection - Google Patents
The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection Download PDFInfo
- Publication number
- CN107225740A CN107225740A CN201710540386.9A CN201710540386A CN107225740A CN 107225740 A CN107225740 A CN 107225740A CN 201710540386 A CN201710540386 A CN 201710540386A CN 107225740 A CN107225740 A CN 107225740A
- Authority
- CN
- China
- Prior art keywords
- lens
- inert gas
- moving die
- die insert
- ejecting structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011261 inert gas Substances 0.000 title claims abstract description 40
- 238000001125 extrusion Methods 0.000 title claims description 4
- 229920003023 plastic Polymers 0.000 claims abstract description 11
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000013467 fragmentation Methods 0.000 abstract description 2
- 238000006062 fragmentation reaction Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/43—Removing or ejecting moulded articles using fluid under pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
Abstract
The present invention relates to a kind of lens die ejecting structure of inert gas auxiliary ejection, including the first moving die insert corresponding with optics of lens effective area, the second moving die insert corresponding with lens perimeter position；Second moving die insert has the inert gas passage with ft connection, inert gas passage passes to the annular boundary position of the second moving die insert and the first moving die insert from outside, and annular boundary position is connected by the annular gap between the first moving die insert and the second moving die insert with lens bottom；The size of annular gap is less than the size that injected plastics material can pass through, and the size that can pass through more than inert gas.The present invention avoids the situation for occurring vacuum after formed product by setting inert gas passage on mould, product is avoided to occur the situation of fragmentation in ejection process, during ejection, lens products are not resulted in damage, it is ensured that the optical property of lens products.
Description
Technical field
It is a kind of lens die ejection of inert gas auxiliary ejection specifically the present invention relates to a kind of lens die
Structure, belongs to lens manufacturing techniques field.
Background technology
There are optical performance requirements in lens products, in forming process, need to can carry out ejection pickup after injection is full,
So as to ensure the optical property of product.Product, often due to the die cavity formation vacuum of mould, causes product after injection is full
It can not eject.
Authorized announcement date is CN206170540U, and the day for announcing is the Chinese patent literature on May 17th, 2017, discloses one
Injection mold and its ejecting mechanism are planted, by the breather line for being provided for being connected with extraneous air pump in thimble, is set in thimble
For the gas outlet of outlet, in the demoulding, first slowly lead to a bit of time air toward breather line, so that local cold by ventilating
But mode, slows down surface breakdown of the thimble to product in knockout course.It is this to use the structure type ventilated on multiple push rods,
Structure is more complicated, and gas circuit sets comparatively laborious, and multiple gas channels can also influence the dimensional accuracy of injecting products, completely
It is not suitable for lens injection production.
The content of the invention
The technical problem to be solved in the invention is：Existing lens die ejecting structure, to meet optics of lens performance,
In forming process, ejection pickup need to can be carried out after injection is full, so as to ensure the optical property of product.Product is in injection
After full, often due to the die cavity formation vacuum of mould, product is caused not eject.
The present invention takes following technical scheme：
A kind of lens die ejecting structure of inert gas auxiliary ejection, including corresponding with optics of lens effective area
One moving die insert 4, the second moving die insert 2 corresponding with lens perimeter position；Second moving die insert 2 has and ft connection
Inert gas passage 5, the inert gas passage 5 passes to the second moving die insert 2 and the first moving die insert 4 from outside
Annular boundary position 6, the annular boundary position 6 passes through the annular gap between the first moving die insert 4 and the second moving die insert 2
7 connect with the bottom of lens 1；The size of the annular gap 7 is less than the size that injected plastics material can pass through, and more than inert gas
The size that can pass through.
Further, the location of described annular gap 7 is corresponding with the outer rim of the optical effective area of lens 1.
Further, the periphery of the first dynamic model module 4 and the second dynamic model module 2 is additionally provided with dynamic model frame 3, the inertia
Gas vent hole 5 is connected through the dynamic model frame 3 with external air source.
Further, the lens 1 are in circular shape.
Further, downwards, inert gas passage 5 is horizontally disposed with the circular arc boss of the lens, between annular
Gap 7 is vertically arranged.
A kind of extrusion method of lens die ejecting structure, inert gas passes to annular boundary from inert gas passage 5
Position 6, then passed to upwards in the contact of lens bottom along annular gap 7, and make to form layer of inert between lens and mould, just
Lens products are ejected in push rod.
The beneficial effects of the present invention are：
1) situation for occurring vacuum after formed product is avoided by setting inert gas passage on mould, it is to avoid production
There is the situation of fragmentation in ejection process in product.
2) during ejecting, lens products are not resulted in damage, it is ensured that the optical property of lens products；
3) lens products are uniformly ventilated using annular boundary position 6, and annular gap 7, and in product bottom
Formed layer of inert, do not influence injection full weight, and injecting products precision.
4) inert gas annular is passed through the optical effective area outer rim of lens products, so as to improve product by gas
The uniformity of active force, it is ensured that the quality of product.
5) size of annular gap 7 is less than the size that injected plastics material can pass through, and is more than what inert gas can pass through
Size, make use of the characteristic of gas and injected plastics material itself, ingenious in design, it is ensured that the quality of injecting products.
Brief description of the drawings
Fig. 1 is the top view of prior art lens products.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the mould schematic diagram of the lens die ejecting structure of inert gas auxiliary ejection.
Fig. 4 is Fig. 3 details enlarged diagram.
Fig. 5 is the view that mould leads to before inert gas.
Fig. 6 is the view that mould leads to after inert gas.
In figure, 1. lens, 2. first dynamic model modules, 3. dynamic model frames, 4. second dynamic model modules, 5. inert gas passages,
6. annular boundary position, 7. annular gaps.
Embodiment
The present invention is further described with specific embodiment below in conjunction with the accompanying drawings.
Referring to Fig. 1-6, a kind of lens die ejecting structure of inert gas auxiliary ejection, including with optics of lens significant surface
Corresponding first moving die insert 4 of product, the second moving die insert 2 corresponding with lens perimeter position；Second moving die insert 2 has
With the inert gas passage 5 of ft connection, the inert gas passage 5 passes to the second moving die insert 2 and first from outside
The annular boundary position 6 of moving die insert 4, the annular boundary position 6 by the first moving die insert 4 and the second moving die insert 2 it
Between annular gap 7 connected with the bottom of lens 1；The size of the annular gap 7 is less than the size that injected plastics material can pass through, and
The size that can pass through more than inert gas.
Referring to Fig. 4, the location of the annular gap 7 is corresponding with the outer rim of the optical effective area of lens 1.
Referring to Fig. 3, the periphery of the first dynamic model module 4 and the second dynamic model module 2 is additionally provided with dynamic model frame 3, the inertia
Gas vent hole 5 is connected through the dynamic model frame 3 with external air source.
Referring to Fig. 1 and 2, the lens 1 are in circular shape.
Referring to Fig. 3-6, downwards, inert gas passage 5 is horizontally disposed with the circular arc boss of the lens, annular gap
7 are vertically arranged.
When it is implemented, inert gas passes to annular boundary position 6 from inert gas passage 5, then along annular gap 7 to
On pass in the contact of lens bottom, and make to form layer of inert between lens and mould, be easy to push rod to eject lens products.
The flash value of lens products：
PC plastics：Clearance control ≤0.05mm between two metal parts.Injected plastics material will not be produced in the filling process
Raw slitter edge.
PMMA plastics：Clearance control ≤0.03mm between two metal parts.Injected plastics material in the filling process will not
Produce slitter edge.
Dimension precision requirement is high after formed product, is substantially completely fitted with moving die insert, forms vacuum state between the two, lazy
Being passed through for gas of property can uniformly eliminate the state of this vacuum.
Characteristic of the present invention using injected plastics material in itself, by the gap between the first dynamic model module 4 and the second dynamic model module 4
Value control is under material flash value gap.
Above is the preferred embodiments of the present invention, those of ordinary skill in the art can also carry out various changes on this basis
Change or improve, on the premise of the total design of the present invention is not departed from, these conversion or improvement should all belong to application claims guarantor
Within the scope of shield.
Claims (6)
1. a kind of lens die ejecting structure of inert gas auxiliary ejection, it is characterised in that:
Including the first moving die insert (4) corresponding with optics of lens effective area, the second dynamic model corresponding with lens perimeter position
Insert (2)；
Second moving die insert (2) has the inert gas passage (5) with ft connection, the inert gas passage
(5) the annular boundary position (6) of the second moving die insert (2) and the first moving die insert (4), the annular interface are passed to from outside
Position (6) is connected by the annular gap (7) between the first moving die insert (4) and the second moving die insert (2) with lens (1) bottom；
The size of the annular gap (7) is less than the size that injected plastics material can pass through, and is more than what inert gas can pass through
Size.
2. the lens die ejecting structure of inert gas auxiliary ejection as claimed in claim 1, it is characterised in that:The annular
The location of gap (7) is corresponding with the outer rim of the optical effective area of lens (1).
3. the lens die ejecting structure of inert gas auxiliary ejection as claimed in claim 1, it is characterised in that:Described first
The periphery of dynamic model module (4) and the second dynamic model module (2) is additionally provided with dynamic model frame (3), and the inert gas passage (5) passes through institute
Dynamic model frame (3) is stated to connect with external air source.
4. the lens die ejecting structure of inert gas auxiliary ejection as claimed in claim 1, it is characterised in that:The lens
(1) it is in circular shape.
5. the lens die ejecting structure of inert gas auxiliary ejection as claimed in claim 4, it is characterised in that:The lens
Circular arc boss downwards, inert gas passage (5) be horizontally disposed with, annular gap (7) are vertically arranged.
6. the extrusion method of lens die ejecting structure described in a kind of claim 1, it is characterised in that:Inert gas is from indifferent gas
Body passage (5) passes to annular boundary position (6), then is passed to upwards in the contact of lens bottom along annular gap (7), and makes lens
Layer of inert is formed between mould, is easy to push rod to eject lens products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540386.9A CN107225740A (en) | 2017-07-05 | 2017-07-05 | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710540386.9A CN107225740A (en) | 2017-07-05 | 2017-07-05 | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107225740A true CN107225740A (en) | 2017-10-03 |
Family
ID=59956340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710540386.9A Pending CN107225740A (en) | 2017-07-05 | 2017-07-05 | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107225740A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391477A (en) * | 2008-09-19 | 2009-03-25 | 深圳东洋旺和实业有限公司 | Injection mold |
| CN201483730U (en) * | 2009-06-03 | 2010-05-26 | 中南大学 | Microfluidic chip injection molding pneumatic demoulding device |
| CN102343644A (en) * | 2011-07-13 | 2012-02-08 | 北京化工大学 | Gas-assisted surface microsphere structure injection molding method and mold |
| CN202986026U (en) * | 2012-11-07 | 2013-06-12 | 凡嘉科技（无锡）有限公司 | Pneumatic ejector structure of mould |
| CN203381128U (en) * | 2013-06-20 | 2014-01-08 | 钟灿秋 | Negative-pressure injection mould for plastic products |
| CN104908256A (en) * | 2015-07-14 | 2015-09-16 | 严鹏 | Pneumatic type forced demolding mechanism and mold thereof |
| CN205929241U (en) * | 2016-08-11 | 2017-02-08 | 厦门威迪亚精密模具塑胶有限公司 | Full outward appearance does not have mould that contains product of built -in accessory of thimble trace |
-
2017
- 2017-07-05 CN CN201710540386.9A patent/CN107225740A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391477A (en) * | 2008-09-19 | 2009-03-25 | 深圳东洋旺和实业有限公司 | Injection mold |
| CN201483730U (en) * | 2009-06-03 | 2010-05-26 | 中南大学 | Microfluidic chip injection molding pneumatic demoulding device |
| CN102343644A (en) * | 2011-07-13 | 2012-02-08 | 北京化工大学 | Gas-assisted surface microsphere structure injection molding method and mold |
| CN202986026U (en) * | 2012-11-07 | 2013-06-12 | 凡嘉科技（无锡）有限公司 | Pneumatic ejector structure of mould |
| CN203381128U (en) * | 2013-06-20 | 2014-01-08 | 钟灿秋 | Negative-pressure injection mould for plastic products |
| CN104908256A (en) * | 2015-07-14 | 2015-09-16 | 严鹏 | Pneumatic type forced demolding mechanism and mold thereof |
| CN205929241U (en) * | 2016-08-11 | 2017-02-08 | 厦门威迪亚精密模具塑胶有限公司 | Full outward appearance does not have mould that contains product of built -in accessory of thimble trace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203945598U (en) | A kind of Novel injection mold | |
| CN205033485U (en) | Take injection mold of gas -cooled drawing of patterns | |
| CN105479679A (en) | Multi-injection-point dustproof cover glue injection mold | |
| CN103128929A (en) | Horn molding automobile door plate type injection mold with exhaust structure | |
| CN204249242U (en) | Air-conditioning filter net stamping-out injection moulding compound die | |
| CN203044555U (en) | Lower die for extrusion die with improved structure | |
| CN207120449U (en) | A kind of lens die ejecting structure of inert gas auxiliary ejection | |
| CN205522314U (en) | Plastic bowl cover injection mold | |
| CN107225740A (en) | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection | |
| CN203526352U (en) | Automobile damper sealing bottom cover shaping mould | |
| CN206825832U (en) | Injection mold advances gluey runner structure | |
| CN205997285U (en) | A kind of die venting structure | |
| CN206475388U (en) | A kind of injection mold for being used to be molded toy car tire | |
| CN207206947U (en) | A kind of thin wall box injection mold | |
| CN204749233U (en) | Bimodulus head blowing forming device | |
| CN204585738U (en) | A kind of injection mould for the production of bottle lid of cosmetics | |
| CN202667605U (en) | Multifunctional aluminum alloy die-casting die for LED radiating support frames | |
| CN221392010U (en) | Plastic mold core of vertical shell | |
| CN204869637U (en) | Liftable multiple duct is wind ring against current | |
| CN205075296U (en) | Mould exhaust structure and have this exhaust structure's mould | |
| CN204604706U (en) | Plug and mould | |
| CN206446068U (en) | A kind of Injection moulded part separator | |
| CN221734444U (en) | Hard aluminum alloy forming extrusion die | |
| CN102825749A (en) | Cooling mechanism of injection molding mold | |
| CN214111329U (en) | Synchronous forming die for plastic bottom cover and reflecting cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171003 |