CN212045732U - Anti-burr injection mold for optical lens - Google Patents
Anti-burr injection mold for optical lens Download PDFInfo
- Publication number
- CN212045732U CN212045732U CN202020187755.8U CN202020187755U CN212045732U CN 212045732 U CN212045732 U CN 212045732U CN 202020187755 U CN202020187755 U CN 202020187755U CN 212045732 U CN212045732 U CN 212045732U
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- Prior art keywords
- slitting
- hole
- plate
- optical lens
- mold
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- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 238000002347 injection Methods 0.000 title claims abstract description 20
- 239000007924 injection Substances 0.000 title claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 20
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 19
- 230000002265 prevention Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002991 molded plastic Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model provides an anti-burr injection mold for optical lenses, which comprises an upper padding plate, an upper mold, a lower mold and a lower padding plate, wherein a supporting block is fixed between the lower mold and the lower padding plate, the bottom of the upper mold is provided with two upper mold cavities, an injection main runner penetrates through the upper padding plate and the upper mold, the top of the lower mold is provided with two lower mold cavities, an injection sub-runner is connected between the two lower mold cavities, and an ejecting abdicating hole is arranged in the lower padding plate; the bottoms of the two ends of the injection molding sub-runner are respectively connected with a slitting hole, each slitting hole is internally connected with a slitting top block in a sliding manner, the bottoms of all the slitting top blocks are fixedly provided with guide top blocks, and the bottoms of the guide top blocks are fixedly provided with slitting top plates; the bottom of each lower die cavity is connected with a stripping hole, each stripping hole is connected with an ejector pin in a sliding mode, and stripping top plates are fixed to the bottoms of all the ejector pins. The utility model discloses the in-process of moulding plastics, when the melting plastic did not cool off the solidification yet, can effectively separate splice bar and optical lens piece through cutting the structure, and can not damage optical lens piece.
Description
Technical Field
The utility model relates to an injection mold specifically discloses an optical lens piece injection mold of burr prevention.
Background
The die refers to various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to shape an article, the tool being made up of various parts, and different molds being made up of different parts.
The injection mold is mainly used for producing plastic products, acrylic optical lenses and other optical lenses and is generally manufactured by the injection mold. In the prior art, an injection mold for an optical lens generally has two or more injection molding cavities, which can effectively improve injection molding efficiency, but after curing molding and mold opening and material removal, a finished product needs to be cut to separate the optical lens from a connecting rib, and the optical lens is easily damaged in a cutting process to form burr and other bad structures, which can affect the performance of the optical lens.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need to provide an injection mold for an optical lens with burr prevention, which can effectively avoid the formation of burrs on the surface of the optical lens without performing additional cutting operation on the optical lens obtained by injection molding.
In order to solve the prior art problem, the utility model discloses an optical lens injection mold of burr prevention, including upper padding plate, upper die, lower mould and lower padding plate, be fixed with two at least supporting shoes between lower mould and the lower padding plate, the bottom of upper die is equipped with two upper die cavities, run through in upper padding plate and the upper die and have moulded plastics the sprue, the top of lower mould is equipped with two lower die cavities, be connected with the subchannel of moulding plastics between two lower die cavities, the sprue of moulding plastics is located the top of the subchannel of moulding plastics, be equipped with the liftout hole of stepping down in the lower padding plate;
the bottoms of the two ends of the injection molding sub-runner are respectively connected with a slitting hole, each slitting hole is internally connected with a slitting top block in a sliding manner, the bottoms of all the slitting top blocks are fixedly provided with guide top blocks, and the bottoms of the guide top blocks are fixedly provided with slitting top plates;
the bottom of every lower die cavity all is connected with takes off the material hole, and equal sliding connection has an thimble in every takes off the material hole, and the bottom of all thimbles is fixed with takes off the material roof, takes off the material roof to be located the encirclement of all supporting shoes, takes off and is equipped with the guiding hole in the material roof, and guiding ejector block sliding connection is in the guiding hole, and the inboard of supporting shoe is fixed with the stopper, takes off the material roof and is located the top of stopper.
Furthermore, an upper cooling plate is arranged between the upper base plate and the upper die.
Furthermore, a lower cooling plate is arranged between the lower backing plate and the lower die.
Furthermore, a material ejecting block is fixed at the bottom of the slitting top plate and is connected in the material ejecting yielding hole in a sliding mode.
Furthermore, a first spring is connected between the slitting top plate and the lower backing plate.
Furthermore, a second spring is connected between the stripping top plate and the lower die.
The utility model has the advantages that: the utility model discloses a prevent optical lens piece injection mold of burr is provided with reliable structure of cutting, and at the in-process of moulding plastics, when the melting plastic did not cool off the solidification yet, can effectively separate splice bar and optical lens piece through cutting the structure, and can not damage the structure of optical lens piece, the optical lens piece that obtains of moulding plastics need not to carry out extra cutting operation, can effectively avoid optical lens piece's surface to form bad defects such as burr, and the quality that obtains the optical lens piece is good.
Drawings
Fig. 1 is a schematic structural view of the mold closing and injection molding device of the present invention.
Fig. 2 is the structure schematic diagram of the utility model when the compound die is cut.
Fig. 3 is a schematic structural view of the mold opening and discharging of the present invention.
The reference signs are: the injection molding machine comprises an upper base plate 10, an upper mold 11, an upper mold cavity 111, an injection molding main flow channel 12, an upper cooling plate 13, a lower base plate 20, a material ejecting abdicating hole 201, a lower mold 21, a lower mold cavity 211, an injection molding sub-flow channel 212, a slitting hole 213, a material stripping hole 214, a supporting block 22, a limiting block 221, a lower cooling plate 23, a slitting ejector block 30, a guiding ejector block 31, a slitting ejector plate 32, an ejector block 33, a first spring 34, an ejector pin 40, a material stripping ejector plate 41, a guiding hole 411 and a second spring 42.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 3.
The embodiment of the utility model discloses an optical lens piece injection mold of burr prevention, include from last upper padding plate 10, upper mold 11, lower mould 21 and lower padding plate 20 that once set up down, be fixed with two at least supporting shoes 22 between lower mould 21 and lower padding plate 20, the bottom of upper mold 11 is equipped with two upper die cavities 111, it has same injection moulding sprue 12 to run through in upper padding plate 10 and upper mold 11, the top of lower mould 21 is equipped with two lower die cavities 211, lower die cavity 211 is located upper die cavity 111 under, be connected with injection moulding subchannel 212 between two lower die cavities 211, injection moulding sprue 12 is located the middle top of injection moulding subchannel 212, be equipped with liftout abdicating hole 201 in the lower padding plate 20;
the bottoms of the two ends of the injection molding runner 212 are respectively connected with a cutting hole 213 penetrating to the bottom of the lower die 21, each cutting hole 213 is internally and slidably connected with a cutting top block 30, preferably, each cutting top block 30 can be of a knife-shaped structure, or the cross section of the top of each cutting top block 30 is of a right-angled triangle, a right-angled edge of each right-angled triangle is parallel to the horizontal plane, and is positioned on one side close to the lower die cavity 211, so that the cut openings can be ensured to be flat and smooth, the bottoms of all the cutting top blocks 30 are fixed with the same guide top block 31, the bottoms of the guide top blocks 31 are fixed with cutting top plates 32, and the projections of the guide top blocks 31 on the horizontal plane are positioned in;
the bottom of each lower die cavity 211 is connected with a stripping hole 214, each stripping hole 214 is connected with an ejector pin 40 in a sliding manner, the bottom of each ejector pin 40 is fixed with a same stripping top plate 41, each stripping top plate 41 is located in the surrounding of each supporting block 22, a guide hole 411 is formed in each stripping top plate 41, each guide top block 31 is connected in each guide hole 411 in a sliding manner, each slitting top plate 32 is located below each stripping top plate 41, a limiting block 221 is fixed on the inner side of each supporting block 22, each stripping top plate 41 is located above each limiting block 221, the projection of each limiting hole on the horizontal plane is outside each slitting top plate 32, and each limiting block 221 cannot obstruct the movement of each slitting top plate 32.
When the mold is closed, as shown in fig. 1, the upper mold 11 is attached to the lower mold 21, an injection molding cavity is formed between the upper mold cavity 111 and the lower mold cavity 211, molten plastic flows into the two injection molding cavities from the injection molding main runner 12 through the injection molding sub-runner 212, and is cut after sufficient molten plastic is injected, as shown in fig. 2, the cut top plate 32 is driven by an external power mechanism to move upwards for a short distance, so that the cut top block 30 is inserted into the injection molding sub-runner 212 from the cut hole 213, before the molten plastic is solidified, the connecting ribs in the injection molding sub-runner 212 are separated from the optical lenses in the injection molding cavity, the end surfaces of the optical lenses are smooth, the connecting ribs and the optical lenses are not required to be cut and separated after molding, the defects of burrs and the like formed between the hard connecting ribs and the optical lenses in the conventional cutting process can be effectively avoided; after the molten plastic in the injection molding cavity is solidified, as shown in fig. 3, the upper mold 11 is far away from the lower mold 21 and rises to realize mold opening, the external power mechanism drives the slitting top plate 32 to further move upwards, the slitting top plate 32 pushes the guide top plate to be far away from the limiting block 221 and rise, the ejector pin 40 rises and ejects out the optical lens in the lower mold cavity 211, and the slitting top block 30 simultaneously ejects out the connecting rib.
In this embodiment, still be equipped with cooling plate 13 between upper padding plate 10 and the last mould 11, upper cooling plate 13 is equipped with the cooling plate structure of cooling water flow channel in being equipped with, and the sprue 12 of moulding plastics runs through cooling plate 13 setting simultaneously, can effective control go up the cooling effect of mould 11 through upper cooling plate 13 to the control compound die is moulded plastics the shaping speed of back optical lens.
Based on above-mentioned embodiment, still be equipped with down cooling plate 23 between lower bolster 20 and the lower mould 21, cooling plate 23 is equipped with the cooling plate structure of cooling water flow channel for being equipped with down, and the sprue 12 of moulding plastics runs through the setting of cooling plate 13 simultaneously, can effectively control the cooling effect of lower mould 21 through lower cooling plate 23, and cooling plate 13 can control the compound die even reliable of the shaping effect of back optical lens of moulding plastics in the cooperation.
In this embodiment, the bottom of the slitting top plate 32 is fixed with the ejector block 33, the ejector block 33 is slidably connected in the ejector abdicating hole 201, the ejector block 33 can effectively avoid the slitting top block 30 from deviating in the ascending process, the stability of the ascending and descending action of the guide top plate can be effectively improved, and preferably, the output end of an external power mechanism can be connected with the ejector block 33.
In this embodiment, the first spring 34 is connected between the slitting top plate 32 and the lower backing plate 20, and the stability of the lifting action of the guide top plate can be effectively improved by the first spring 34.
In this embodiment, the second spring 42 is connected between the stripper plate 41 and the lower die 21, and the stability of the paint top plate lifting operation can be effectively improved by the second spring 42.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The utility model provides an optical lens injection mold of burr prevention, includes upper padding plate (10), goes up mould (11), lower mould (21) and lower bolster (20), be fixed with two at least supporting shoes (22) between lower mould (21) and lower bolster (20), characterized in that, the bottom of going up mould (11) is equipped with two upper die cavities (111), it moulds plastics sprue (12) to run through in upper padding plate (10) and last mould (11), the top of lower mould (21) is equipped with two lower die cavities (211), be connected with between two lower die cavities (211) and mould plastics runner (212), it moulds plastics sprue (12) and is located the top of moulding plastics runner (212), be equipped with liftout hole (201) of stepping down in lower bolster (20);
the bottom parts of two ends of the injection molding sub-runner (212) are respectively connected with a slitting hole (213), each slitting hole (213) is internally and slidably connected with a slitting top block (30), the bottom parts of all the slitting top blocks (30) are fixedly provided with guide top blocks (31), and the bottom parts of the guide top blocks (31) are fixedly provided with slitting top plates (32);
the material removing device is characterized in that a material removing hole (214) is connected to the bottom of each lower die cavity (211), an ejector pin (40) is connected to each material removing hole (214) in a sliding mode, a material removing top plate (41) is fixed to the bottom of each ejector pin (40), each material removing top plate (41) is located in the surrounding of each supporting block (22), a guide hole (411) is formed in each material removing top plate (41), each guide top block (31) is connected to the corresponding guide hole (411) in a sliding mode, a limiting block (221) is fixed to the inner side of each supporting block (22), and each material removing top plate (41) is located above the corresponding limiting block (221).
2. A burr-proof optical lens injection mold according to claim 1, characterized in that an upper cooling plate (13) is further provided between the upper shim plate (10) and the upper mold (11).
3. A burr-proof optical lens injection mold according to claim 2, characterized in that a lower cooling plate (23) is further provided between the lower base plate (20) and the lower mold (21).
4. The injection mold for the burr-proof optical lens as claimed in claim 1, wherein a knockout block (33) is fixed to the bottom of the slitting top plate (32), and the knockout block (33) is slidably connected in the knockout relief hole (201).
5. A burr-proof optical lens injection mold according to claim 1, characterized in that a first spring (34) is connected between the top slitting plate (32) and the lower shim plate (20).
6. A burr-proof optical lens injection mold according to claim 1, characterized in that a second spring (42) is connected between the stripper top plate (41) and the lower mold (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020187755.8U CN212045732U (en) | 2020-02-20 | 2020-02-20 | Anti-burr injection mold for optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020187755.8U CN212045732U (en) | 2020-02-20 | 2020-02-20 | Anti-burr injection mold for optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212045732U true CN212045732U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020187755.8U Expired - Fee Related CN212045732U (en) | 2020-02-20 | 2020-02-20 | Anti-burr injection mold for optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212045732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113954308A (en) * | 2021-10-29 | 2022-01-21 | 东莞晶彩光学有限公司 | Automatic ejecting injection mold of die sinking |
| CN113997513A (en) * | 2021-10-23 | 2022-02-01 | 上海鼎瑞模具科技有限公司 | Injection mold with unhairing limit function |
-
2020
- 2020-02-20 CN CN202020187755.8U patent/CN212045732U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997513A (en) * | 2021-10-23 | 2022-02-01 | 上海鼎瑞模具科技有限公司 | Injection mold with unhairing limit function |
| CN113997513B (en) * | 2021-10-23 | 2024-03-15 | 上海鼎瑞模具科技有限公司 | Injection mold with unhairing limit function |
| CN113954308A (en) * | 2021-10-29 | 2022-01-21 | 东莞晶彩光学有限公司 | Automatic ejecting injection mold of die sinking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |