CN116533460A - A no water inlet injection mold for car retro-reflector processing - Google Patents
A no water inlet injection mold for car retro-reflector processing Download PDFInfo
- Publication number
- CN116533460A CN116533460A CN202310797732.7A CN202310797732A CN116533460A CN 116533460 A CN116533460 A CN 116533460A CN 202310797732 A CN202310797732 A CN 202310797732A CN 116533460 A CN116533460 A CN 116533460A
- Authority
- CN
- China
- Prior art keywords
- retro
- reflector
- insert
- mold plate
- molding
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 7
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 13
- 239000012530 fluid Substances 0.000 description 10
- 238000007493 shaping process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 230000007704 transition Effects 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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
-
- 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
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2701—Details not specific to hot or cold runner channels
- B29C45/2708—Gates
-
- 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
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
- B29C45/401—Ejector pin constructions or mountings
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7312—Construction of heating or cooling fluid flow channels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The application relates to a water-free port injection mold for processing an automobile retro-reflector, which relates to the technical field of injection molds and is used for injection molding the automobile retro-reflector, wherein the retro-reflector comprises a plate body and a vertical edge arranged on the side edge of the plate body, the injection mold comprises a movable mold plate and a fixed mold plate matched with the movable mold plate, a first insert is arranged on the movable mold plate, a second insert is arranged on the fixed mold plate, a cavity for molding the retro-reflector is formed between the first insert and the second insert when the movable mold plate and the fixed mold plate are assembled, and a molding groove for molding the vertical edge is formed in the first insert; the injection mold further comprises a pouring system, the pouring system comprises a main runner and a diversion runner, a sprue bush connected with a nozzle of the injection molding machine is arranged on the fixed template, the sprue bush is connected with the main runner, a sprue is arranged at an outlet of the diversion runner, and the sprue is right opposite to the forming groove. The method can reduce flow marks generated near the pouring gate by the formed retro-reflector.
Description
Technical Field
The application relates to the field of automobile retro-reflectors, in particular to a water-free port injection mold for processing an automobile retro-reflector.
Background
The automobile reflector, also called an automobile retro-reflector, is generally arranged at the tail of an automobile, does not emit light, and is used for reflecting light and mainly plays a role in warning.
The automobile retro-reflector as shown in fig. 1 and 2 is integrally constructed, and the plate body 5 is directly injection-molded through an injection mold. The thermoplastic resin melted in the injection molding process enters the hot runner from the sprue bush and then enters the cavity through the sprue for molding the integral retro-reflector.
However, the inventors found in practical observation that the retro-reflector is prone to flow marks near the gate or called gates during injection molding production. Since the retro-reflector needs to reflect light to play a role in warning, the light reflection effect is affected due to the generation of the water gap, and therefore improvement is needed.
Disclosure of Invention
In order to reduce the influence of flow marks generated by the retro-reflector near the pouring gate on the light reflecting effect, the application provides a water-free port injection mold for processing an automobile retro-reflector.
The application provides a no water port injection mold for car retro-reflector processing adopts following technical scheme:
the water-free port injection mold for processing the automobile retro-reflector is used for injection molding the automobile retro-reflector, the retro-reflector comprises a plate body and vertical edges arranged on the side edges of the plate body, the injection mold comprises a movable mold plate and a fixed mold plate matched with the movable mold plate, a first insert is arranged on the movable mold plate, a second insert is arranged on the fixed mold plate, when the movable mold plate and the fixed mold plate are clamped, a cavity for molding the retro-reflector is formed between the first insert and the second insert, and a molding groove for molding the vertical edges is formed in the first insert;
the injection mold further comprises a pouring system, the pouring system comprises a main runner and a diversion runner, a sprue bush connected with a nozzle of the injection molding machine is arranged on the fixed template, the sprue bush is connected with the main runner, a sprue is arranged at an outlet of the diversion runner, and the sprue is right opposite to the forming groove.
Through adopting above-mentioned technical scheme, through setting up perpendicular limit on the retro-reflector, injection mold's runner position is just to the position of shaping recess, and molten thermoplastic resin can be followed the perpendicular limit position of retro-reflector and begin to pour into in the injection molding process, and the flow mark mainly also can concentrate in the perpendicular limit position of retro-reflector if appearing after the shaping, can not produce too big influence to reflection of light effect.
Optionally, the movable mould board is connected with ejection mechanism, ejection mechanism is including setting up the side ejector pin of shaping recess corresponding position, the tank bottom of shaping recess is the top of side ejector pin.
Through adopting above-mentioned technical scheme, through setting up an ejector pin alone in the position department of riser behind the reflector shaping, can make things convenient for the drawing of patterns in vertical limit position, avoid drawing of patterns in-process vertical limit card to live.
Optionally, the side ejector rod comprises a rod body and a preheating pipeline, and the preheating pipeline is connected with an external heat supply pipe.
Through adopting above-mentioned technical scheme, through supplying hot water to preheating the pipeline and supplying heat, can realize in the body of rod preheating before moulding plastics, thereby can not produce too big temperature difference and lead to rapid cooling and be difficult to forward continuous transport when making molten thermoplastic resin send out from the runner, and then alleviate the flow mark phenomenon of runner department.
Optionally, a through hole through which the preheating pipeline passes is formed on the rod body, the preheating pipeline passes through the through hole, a backflow region exists between the hole walls of the through hole, and the preheating pipeline is provided with a backflow port communicated with the backflow region.
Through adopting above-mentioned technical scheme, carry out the heat supply of fluid through preheating the pipeline, the rethread backward flow mouth flows back to the back in the interval of backward flow and sends out.
Optionally, the end part of the preheating pipeline penetrates out of the rod body and expands outwards in the circumferential direction to form a butt joint, and the end surface of the butt joint forms the bottom of the forming groove.
Through adopting above-mentioned technical scheme, the butt joint is the tank bottom of shaping recess, and the vertical limit that directly is used for the cooperation shaping retro-reflector need not to pass through other medium and carries out the transition, and is better to the preheating effect of runner department.
Optionally, a plurality of through openings are formed on one side of the abutting joint, which is away from the forming groove, and the plurality of through openings form the reflux opening.
By adopting the technical scheme, the heat supply fluid enters from the preheating pipeline, passes through the butt joint and then flows out through the reflux port.
Optionally, a sealing ring is further arranged between the rod body and the preheating pipeline, a drainage pipe is connected to the rod body, and the drainage pipe is located between the sealing ring and the abutting joint and is communicated with the backflow interval.
Through adopting above-mentioned technical scheme, the fluid of backward flow in the backward flow interval is sent out through the drain pipe, and the sealing ring can seal the clearance between preheating pipe and the body of rod, avoids leaking.
Optionally, two cavities are formed between the first insert and the second insert, and the split channels are two and respectively correspond to the two cavities.
By adopting the technical scheme, two retro-reflectors can be molded at one time to be used corresponding to one automobile.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the molten thermoplastic resin is injected from the sprue bush, is sent into the cavity from the sprue through the main runner and the shunt, and the main flow mark is concentrated at the vertical edge position formed by the forming groove because the position of the sprue is opposite to the forming groove, so that the reflecting effect of the automobile retro-reflector is not greatly influenced;
2. the bottom of the forming groove is provided with the side ejector rod communicated with hot fluid, so that the temperature difference of the thermoplastic resin when the thermoplastic resin is sent out from the pouring gate can be reduced.
Drawings
Fig. 1 is a schematic front view of a conventional automotive retro-reflector.
Fig. 2 is a schematic rear view of a conventional automotive retro-reflector.
Fig. 3 is a schematic front view of an automotive retro-reflector of the present application.
Fig. 4 is a schematic rear view of an automotive retro-reflector of the present application.
Fig. 5 is an exploded view of the injection mold.
Fig. 6 is a schematic view of the structure at the movable platen in the injection mold.
Fig. 7 is an enlarged view at a in fig. 6.
Fig. 8 is a schematic cross-sectional view of a side ejector pin.
Reference numerals illustrate: 1. a movable template; 11. a first insert; 12. forming a groove; 2. a stationary mold plate; 21. a second insert; 22. a sprue bush; 3. a main flow passage; 31. a sub-runner; 32. a gate; 4. a side ejector rod; 41. a rod body; 411. perforating; 42. preheating a pipeline; 421. a return port; 422. a butt joint; 43. a reflux zone; 44. a drainage tube; 45. a seal ring; 5. a board body; 51. and (5) vertical edges.
Detailed Description
The present application is described in further detail below in conjunction with figures 3-8.
The embodiment of the application discloses a no water port injection mold for processing of car retro-reflector for carry out the production of moulding plastics to car retro-reflector in fig. 3, 4, wherein the retro-reflector includes board body 5 and sets up the perpendicular limit 51 of board body 5 side.
Referring to fig. 5 and 6, the injection mold includes a movable platen 1 and a fixed platen 2 coupled to the movable platen 1, wherein a first insert 11 is provided on the movable platen 1 and a second insert 21 is provided on the fixed platen 2. When the movable mold plate 1 and the fixed mold plate 2 are clamped, two cavities can be formed, so that two retro-reflectors can be injection molded at a time. Referring to fig. 7, the first insert 11 is provided with a molding groove 12 for molding the vertical edge 51.
Referring to fig. 5-7, the injection mold further comprises a pouring system, the pouring system comprises a main runner 3 and two diversion runners 31 connected with the main runner 3, a sprue bush 22 connected with a nozzle of an injection molding machine is arranged on the fixed template 2, the sprue bush 22 is connected with the main runner 3, a sprue 32 is arranged at an outlet of the diversion runner 31, and the sprue 32 of the two diversion runners 31 is respectively opposite to the forming grooves 12 of the two cavities. The injection molding machine injects the thermoplastic resin in a molten state from the sprue bush 22, through the sprue 3, and then into the cavity from the gate 32 at the sprue 31. Since the gate 32 is positioned relative to the molding groove 12, the molten thermoplastic resin will first enter the molding groove 12 and then spread into the cavity, so that the flow mark will be concentrated mainly at the vertical edge 51 formed by the molding groove 12, reducing the influence on the retro-reflector.
One of the main causes of flow marks is that the thermoplastic resin solidifies too quickly when injected into the cavity, and reducing the temperature difference when the thermoplastic resin is injected into the cavity can further reduce the influence of the flow marks. Based on this, the present application further provides that an ejector mechanism for ejecting the molded retro-reflector at the time of demolding is connected to the movable mold plate 1. Referring to fig. 7 and 8, the ejection mechanism includes a side ejector rod 4 disposed at a position corresponding to the forming groove 12, and the top of the side ejector rod 4 is the bottom of the forming groove 12. The side ejector pin 4 includes a rod body 41 and a preheating pipe 42, and the preheating pipe 42 is connected with an external heat supply pipe. The heating pipe is filled with hot fluid and heats the rod 41 through the preheating pipeline 42, so that the temperature of the rod 41 is increased, the temperature difference when the thermoplastic resin is injected into the cavity can be reduced, and the influence of flow marks is further reduced.
Further, referring to fig. 8, a through hole 411 is formed in the rod 41 through which the preheating pipe 42 passes, the preheating pipe 42 passes through the through hole 411, a gap exists between the pipe wall of the preheating pipe 42 and the hole wall of the through hole 411, the gap is used as a fluid backflow section 43 for backflow, and a backflow port 421 communicated with the backflow section 43 is formed in the preheating pipe 42. The rod body 41 is also connected with a drain pipe 44 communicated with the backflow section 43, and fluid flowing back in the backflow section 43 is sent out through the drain pipe 44. A sealing ring 45 is further arranged between the rod body 41 and the preheating pipeline 42, the sealing ring 45 seals a gap between the preheating pipeline 42 and the wall of the through hole 411 at a corresponding position, and meanwhile, the drainage pipe 44 is positioned between the sealing ring 45 and the backflow port 421, so that leakage of fluid is avoided.
The end of the preheating pipe 42 may, but is not limited to, penetrate the rod 41 and be expanded circumferentially to form the abutment 422, and the end of the abutment 422 is the bottom of the forming groove 12, that is, the end of the preheating pipe 42 is directly used as the bottom of the forming groove 12. The tip of the abutting joint 422 as the upper outer wall of the preheating pipe 42 is in direct contact with the thermoplastic resin, and the heat loss due to heat conduction can be further reduced. In addition, in order to facilitate the backflow of the hot fluid, a plurality of openings are formed on one side of the abutting joint 422 facing away from the forming groove 12, and the plurality of openings are communicated with the backflow section 43 to be used as the backflow port 421.
The implementation principle of the water-free port injection mold for processing the automobile retro-reflector is as follows:
the molten thermoplastic resin is injected from the sprue bush 22, is fed into the cavity from the sprue 32 through the main runner 3 and the shunt runner 31, and is directly opposite to the forming groove 12, and the bottom of the forming groove 12 is provided with the side ejector rod 4 which is introduced with hot fluid for heating, so that the temperature at the place can be increased, the temperature difference during injection is reduced, the influence of flow marks is reduced, and the quality of a final product is improved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (6)
1. A no water port injection mold for car retro-reflector processing, its characterized in that: the injection molding mold is used for injection molding of an automobile retro-reflector, the retro-reflector comprises a plate body (5) and vertical edges (51) arranged on the side edges of the plate body (5), the injection molding mold comprises a movable mold plate (1) and a fixed mold plate (2) matched with the movable mold plate (1), a first insert (11) is arranged on the movable mold plate (1), a second insert (21) is arranged on the fixed mold plate (2), and when the movable mold plate (1) and the fixed mold plate (2) are clamped, a cavity for molding the retro-reflector is formed between the first insert (11) and the second insert (21), and a molding groove (12) for molding the vertical edges is formed in the first insert (11);
the injection mold further comprises a pouring system, the pouring system comprises a main runner (3) and a diversion runner (31), a sprue bush (22) connected with a nozzle of the injection molding machine is arranged on the fixed template (2), the sprue bush (22) is connected with the main runner (3), a sprue (32) is arranged at an outlet of the diversion runner (31), and the sprue (32) is opposite to the forming groove (12);
the movable template (1) is connected with an ejection mechanism, the ejection mechanism comprises a side ejector rod (4) arranged at a position corresponding to the forming groove (12), the bottom of the forming groove (12) is the top of the side ejector rod (4), the side ejector rod (4) comprises a rod body (41) and a preheating pipeline (42), and the preheating pipeline (42) is connected with an external heating pipe.
2. The water-free port injection mold for processing an automobile retro-reflector according to claim 1, wherein: the rod body (41) is provided with a through hole (411) for the preheating pipeline (42) to penetrate, the preheating pipeline (42) penetrates through the through hole (411), a backflow section (43) is arranged between the hole walls of the through hole (411), and the preheating pipeline (42) is provided with a backflow port (421) communicated with the backflow section (43).
3. The water-free port injection mold for processing an automobile retro-reflector according to claim 2, wherein: the end part of the preheating pipeline (42) penetrates out of the rod body (41) and expands outwards in the circumferential direction to form an abutting joint (422), and the end surface of the abutting joint (422) forms the bottom of the forming groove (12).
4. A water-free port injection mold for automotive retro-reflector machining as set forth in claim 3, wherein: and one side of the abutting joint (422) back to the forming groove (12) is provided with a plurality of through holes, and the reflux ports (421) are formed by the plurality of through holes.
5. The water-free port injection mold for processing an automobile retro-reflector according to claim 4, wherein: a sealing ring (45) is further arranged between the rod body (41) and the preheating pipeline (42), a drainage pipe (44) is connected to the rod body (41), and the drainage pipe (44) is located between the sealing ring (45) and the abutting joint (422) and is communicated with the backflow interval (43).
6. The water-free port injection mold for processing an automobile retro-reflector according to claim 1, wherein: two cavities are formed between the first insert (11) and the second insert (21), and two flow dividing channels (31) are arranged and correspond to the two cavities respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310797732.7A CN116533460B (en) | 2023-07-03 | 2023-07-03 | A no water inlet injection mold for car retro-reflector processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310797732.7A CN116533460B (en) | 2023-07-03 | 2023-07-03 | A no water inlet injection mold for car retro-reflector processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116533460A true CN116533460A (en) | 2023-08-04 |
| CN116533460B CN116533460B (en) | 2023-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310797732.7A Active CN116533460B (en) | 2023-07-03 | 2023-07-03 | A no water inlet injection mold for car retro-reflector processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116533460B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117921948A (en) * | 2024-01-30 | 2024-04-26 | 东莞市固利精密模具有限公司 | Automobile retro-reflector die |
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| CN203171965U (en) * | 2013-03-26 | 2013-09-04 | 广东科技学院 | Full-automatic progressive precision injection mold frame |
| WO2014075756A1 (en) * | 2012-11-15 | 2014-05-22 | Daimler Ag | Method for controlling the temperature of a transfer mould and transfer mould |
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| KR20160140521A (en) * | 2016-09-09 | 2016-12-07 | 한국에너지기술연구원 | Preheatable ejector and injection mold having the same |
| CN109397637A (en) * | 2018-09-30 | 2019-03-01 | 寇长花 | A kind of automobile armrest lid injection mold |
| CN112026117A (en) * | 2019-06-04 | 2020-12-04 | Oppo广东移动通信有限公司 | Injection mold and shell manufacturing method |
| CN114407312A (en) * | 2022-01-14 | 2022-04-29 | 温宗贤 | Ejection device and injection molding machine comprising same |
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2023
- 2023-07-03 CN CN202310797732.7A patent/CN116533460B/en active Active
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|---|---|---|---|---|
| CN1515404A (en) * | 1995-09-25 | 2004-07-28 | �Ϻ���ͨ��ѧ | Injection-moulded thermoplastic plastic spectacle lens suitable for full-automatic impregnation to make hard coating |
| JP2012000868A (en) * | 2010-06-17 | 2012-01-05 | Hitachi Industrial Equipment Systems Co Ltd | Die for molding hard liquid resin and hard liquid resin molding method |
| WO2014075756A1 (en) * | 2012-11-15 | 2014-05-22 | Daimler Ag | Method for controlling the temperature of a transfer mould and transfer mould |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117921948A (en) * | 2024-01-30 | 2024-04-26 | 东莞市固利精密模具有限公司 | Automobile retro-reflector die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116533460B (en) | 2023-10-03 |
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