CN117549502B - Vacuum low-pressure injection molding system for cosmetic packaging box - Google Patents
Vacuum low-pressure injection molding system for cosmetic packaging box Download PDFInfo
- Publication number
- CN117549502B CN117549502B CN202410046832.0A CN202410046832A CN117549502B CN 117549502 B CN117549502 B CN 117549502B CN 202410046832 A CN202410046832 A CN 202410046832A CN 117549502 B CN117549502 B CN 117549502B
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- CN
- China
- Prior art keywords
- ventilation
- mold
- air
- injection molding
- channel
- 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.)
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Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 45
- 239000002537 cosmetic Substances 0.000 title claims abstract description 9
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims abstract description 85
- 238000007789 sealing Methods 0.000 claims description 35
- 238000007664 blowing Methods 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 abstract description 18
- 239000004033 plastic Substances 0.000 abstract description 18
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000013022 venting Methods 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
- B29C45/34—Moulds having venting means
-
- 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
- B29C45/2608—Mould seals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of injection molds, in particular to a vacuum low-pressure injection molding system for a cosmetic packaging box. The technical scheme is as follows: comprises a movable upper die, a fixed lower die, an injection molding device, a die opening and closing driving device and an air pressure control device; the mold opening and closing driving device is in driving connection with the movable upper mold, the movable upper mold is correspondingly matched with the fixed lower mold, and an injection molding cavity is formed between a mold core of the movable upper mold and a mold cavity of the fixed lower mold; the fixed lower die is provided with a ventilation channel, and the air pressure control device is connected with the ventilation channel. The beneficial effects are that: through set up the passageway of taking a breath on fixed lower mould, utilize air pressure controlling means to control the air pressure in the injection molding die cavity that forms between removal upper mould and the fixed lower mould through the passageway of taking a breath, when will carrying out the injection molding, with the plastics fluid that the evacuation is convenient for melt in the die cavity be full of whole die cavity fast, improve the quality of moulding plastics, after finishing moulding plastics and shaping simultaneously, fill the gas in the die cavity and be convenient for open the mould and take out the finished product.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to a vacuum low-pressure injection molding system for a cosmetic packaging box.
Background
In the injection molding process of cosmetic packaging box, need utilize the injection molding machine to pour into the injection molding intracavity of mould with molten plastics fluid, owing to there is gas in the die cavity itself, and belong to the space of relative seal in the die cavity, this makes the unable technique of a large amount of gas that remain in the die cavity of injection molding in-process discharge, although can set up the exhaust hole in some moulds and be used for the exhaust gas, but owing to the speed of moulding plastics is faster, the gas in the die cavity also can't in time discharge fast, lead to the unable filling of injection molding intracavity of raw materials, influence the effect of moulding plastics, simultaneously owing to the atmospheric pressure is too high in the die cavity, lead to local high temperature to appear phenomena such as flow mark, singing on the finished product of moulding plastics, influence product performance and yield.
Disclosure of Invention
The invention aims to provide a vacuum low-pressure injection molding system for a cosmetic packaging box, in particular to a vacuum low-pressure injection molding system which is used for vacuumizing the inside of a die cavity and then injecting air after injection molding so as to facilitate demolding.
In order to achieve the above purpose, the invention adopts the following technical scheme: a vacuum low-pressure injection molding system for cosmetic packaging boxes comprises a movable upper die, a fixed lower die, an injection molding device, an opening and closing die driving device and an air pressure control device; the mold opening and closing driving device is in driving connection with the movable upper mold, the movable upper mold is correspondingly matched with the fixed lower mold, a mold core is arranged on the movable upper mold, a mold cavity is arranged on the fixed lower mold, and an injection molding mold cavity is formed between the mold core and the mold cavity; the fixed lower die is provided with a ventilation channel, and the air pressure control device is connected with the ventilation channel.
Specifically, the air pressure control device comprises a vacuum pump, an air blowing pump and an air exchanging connector, wherein the vacuum pump and the air blowing pump are respectively connected with the air exchanging connector through an air switching valve, and the air exchanging connector is connected with an air exchanging channel on the fixed lower die.
Specifically, the ventilation connector comprises a gas channel and a sealing plug arranged at the center of the gas channel, wherein an air inlet and outlet channel is formed between the sealing plug and the gas channel, and the sealing plug can plug a ventilation port of the ventilation channel of the fixed lower die.
Specifically, the ventilation connector is in driving connection by a linear driving mechanism, and the linear driving mechanism is used for driving a sealing plug of the ventilation connector to block or loosen a ventilation channel.
Specifically, the ventilation channel comprises a connecting section and a ventilation section, the ventilation section is connected with a cavity of the fixed lower die, the connecting section is used for accommodating a ventilation connector, and a sealing ring is arranged on the outer side of the ventilation connector and is in sealing connection with the connecting section of the ventilation channel; the diameter of the connecting section is larger than that of the ventilation section.
Specifically, the diameter of the sealing plug of the ventilation connector is larger than that of the ventilation section, and the linear driving mechanism can drive the sealing plug of the ventilation connector to plug or loosen the ventilation section.
Specifically, the inner side of the gas channel is provided with a fixed ring, the sealing plug is fixedly arranged on the inner side of the fixed ring, and a plurality of ventilation through holes are formed in the outer side of the fixed ring and communicated with the gas inlet and outlet channel.
The invention has the beneficial effects that: through set up the passageway of taking a breath on fixed lower mould, utilize air pressure controlling means to control the air pressure in the injection molding die cavity that forms between removal upper mould and the fixed lower mould through the passageway of taking a breath, when will carrying out the injection molding, with the plastics fluid that the evacuation is convenient for melt in the die cavity be full of whole die cavity fast, improve the quality of moulding plastics, after finishing moulding plastics and shaping simultaneously, fill the gas in the die cavity and be convenient for open the mould and take out the finished product. In addition, the ventilation connector of the air pressure control device is provided with a sealing plug which can be used for blocking ventilation holes of the ventilation channel, and when injection molding is carried out, the ventilation holes can be blocked to prevent molten plastic fluid from flowing into the ventilation channel to cause blockage.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a vacuum low pressure injection molding system according to an embodiment;
FIG. 2 is an enlarged partial view of the portion A of FIG. 1;
fig. 3 is a schematic view of a specific structure of the inside of the ventilation connector in fig. 2.
Detailed Description
Embodiment 1, referring to fig. 1 to 3, a vacuum low pressure injection molding system for cosmetic packaging boxes comprises a movable upper die 1, a fixed lower die 2, an injection molding device 3, an open-close die driving device 4 and an air pressure control device 5; the mold opening and closing driving device 4 is in driving connection with the movable upper mold 1, the movable upper mold 1 is correspondingly matched with the fixed lower mold 2, a mold core is arranged on the movable upper mold 1, a mold cavity is arranged on the fixed lower mold 2, and an injection molding mold cavity 6 is formed between the mold core and the mold cavity; the fixed lower die 2 is provided with a ventilation channel 7, and the air pressure control device 5 is connected with the ventilation channel 7.
In this embodiment, the mold opening and closing driving device 4 is used for driving the movable upper mold 1 and the fixed lower mold 2 to perform mold opening and closing actions, and the injection molding device 3 injects molten plastic fluid into an injection molding cavity 6 formed between the movable upper mold 1 and the fixed lower mold 2 through an injection port formed in the movable upper mold 1; after the movable upper die 1 moves downwards to be matched with the fixed lower die 2, the air pressure control device 5 vacuumizes the injection molding die cavity 6 through the ventilation channel 7 of the fixed lower die 2, so that the injection molding die cavity 6 is kept in a relative vacuum state, and then the injection molding device 3 is started to perform injection molding; when the injection molding is completed and the mold opening is needed, the air pressure control device 5 injects air into the injection molding cavity 6 through the air exchange channel 7, so that a finished product in the mold cavity is easier to separate from the injection molding cavity 6, and the finished product in the injection molding cavity 6 is more convenient to take out or eject after the mold opening. The air pressure control device 5 comprises a vacuum pump 51, an air blowing pump 52 and an air exchanging connector 53, wherein the vacuum pump 51 and the air blowing pump 52 are respectively connected with the air exchanging connector 53 through air switch valves, and the air exchanging connector 53 is connected with the air exchanging channel 7 on the fixed lower die 2. When the injection molding cavity 6 needs to be vacuumized, opening the vacuum pump 51 and the gas switching valve between the vacuum pump 51 and the ventilation connector 53, and simultaneously closing the air blowing pump 52 and the gas switching valve between the air blowing pump 52 and the ventilation connector 53; when the injection molding cavity 6 needs to be inflated, opening the air blowing pump 52 and the air switching valve between the air blowing pump 52 and the air exchanging connector 53, and closing the vacuum pump 51 and the air switching valve between the vacuum pump 51 and the air exchanging connector 53; thereby effecting control of the air pressure within the injection mould cavity 6.
In addition, since the ventilation passage 7 is provided on the fixed lower die 2 and the injection cavity 6 is in a vacuum low pressure state when injection molding is performed, the plastic fluid injected into the cavity is easy to enter the ventilation passage 7, and the ventilation passage 7 needs to be connected with the outside, and the length thereof is long, so that the ventilation passage 7 is easy to be blocked by the plastic, although the plastic entering the ventilation passage 7 can be restricted by setting the ventilation passage 7 to a smaller diameter near one end of the injection cavity 6, in order to further restrict the plastic fluid entering the ventilation passage 7, the ventilation connector 53 in the present embodiment includes a gas passage 531 and a sealing plug 532 provided at a central position of the gas passage 531, an air inlet and outlet passage 533 is formed between the sealing plug 532 and the gas passage 531, and the sealing plug 532 can block the ventilation opening 71 of the ventilation passage 7 of the fixed lower die 2. The ventilation opening 71 of the ventilation duct 7 can be blocked by the sealing plug 532 during injection molding, so that the plastic is prevented from flowing into the ventilation duct 7. Specifically, the ventilation connector 53 is driven by a linear driving mechanism 54, and the linear driving mechanism 54 is used for driving the sealing plug 532 of the ventilation connector 53 to block or unblock the ventilation channel 7. The air exchanging connector 53 can be driven by the linear driving mechanism 54 to drive the sealing plug 532 to block or loosen the air exchanging channel 7, when vacuum pumping or air charging is needed, the linear driving mechanism 54 drives the air exchanging connector 53 to enable the sealing plug 532 to loosen the air exchanging channel 7, and when injection molding is performed, the linear driving mechanism 54 drives the air exchanging connector 53 to enable the sealing plug 532 to block the air exchanging channel 7.
Specifically, the ventilation channel 7 includes a connection section 71 and a ventilation section 72, the ventilation section 72 is connected with the cavity of the fixed lower die 2, the connection section 71 is used for accommodating the ventilation connector 53, and a sealing ring 55 is arranged outside the ventilation connector 53 and is in sealing connection with the connection section 71 of the ventilation channel 7; the diameter of the connecting section 71 is greater than the diameter of the venting section 72; the diameter of the sealing plug 532 of the ventilation connector 53 is larger than that of the ventilation section 72, and the linear driving mechanism 54 can drive the sealing plug 532 of the ventilation connector 53 to block or unblock the ventilation section 72. The sealing ring 55 is arranged outside the ventilation connector 53 and is in sealing connection with the connecting section 71 of the ventilation channel 7, and at the moment, the ventilation connector 53 can move up and down along the connecting section 71 so that the sealing plug 532 plugs or loosens the ventilation section 72. Because the ventilation section 72 has smaller diameter and shorter length, the inflow of plastic can be effectively limited, and even a small amount of inflow can be stuck on the injection molding finished product to be taken out together, so that the blockage of the ventilation channel 7 is avoided.
Specifically, the ventilation connector 53 has a structure in which a fixing ring 534 is disposed inside the air channel 531, the sealing plug 532 is fixedly disposed inside the fixing ring 534, and a plurality of ventilation through holes 535 are disposed on the fixing ring 534 and are communicated with the air inlet and outlet channels 533.
Of course, the above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all equivalent modifications made in the principles of the present invention are included in the scope of the present invention.
Claims (1)
1. A vacuum low pressure injection molding system for cosmetic packaging box, its characterized in that: comprises a movable upper die, a fixed lower die, an injection molding device, a die opening and closing driving device and an air pressure control device; the mold opening and closing driving device is in driving connection with the movable upper mold, the movable upper mold is correspondingly matched with the fixed lower mold, a mold core is arranged on the movable upper mold, a mold cavity is arranged on the fixed lower mold, and an injection molding mold cavity is formed between the mold core and the mold cavity; the fixed lower die is provided with a ventilation channel, and the air pressure control device is connected with the ventilation channel; the air pressure control device comprises a vacuum pump, an air blowing pump and a ventilation connector, wherein the vacuum pump and the air blowing pump are respectively connected with the ventilation connector through an air switch valve, and the ventilation connector is connected with a ventilation channel on the fixed lower die; the air exchanging connector comprises an air channel and a sealing plug arranged in the center of the air channel, an air inlet and outlet channel is formed between the sealing plug and the air channel, and the sealing plug can plug an air inlet of the air exchanging channel of the fixed lower die; the air exchanging connector is in driving connection by a linear driving mechanism, and the linear driving mechanism is used for driving a sealing plug of the air exchanging connector to block or loosen an air exchanging channel; the ventilation channel comprises a connecting section and a ventilation section, the ventilation section is connected with a cavity of the fixed lower die, the connecting section is used for accommodating a ventilation connector, and a sealing ring is arranged on the outer side of the ventilation connector and is in sealing connection with the connecting section of the ventilation channel; the diameter of the connecting section is larger than that of the ventilation section; the diameter of the sealing plug of the ventilation connector is larger than that of the ventilation section, and the linear driving mechanism can drive the sealing plug of the ventilation connector to plug or loosen the ventilation section; the inner side of the gas channel is provided with a fixed ring, the sealing plug is fixedly arranged on the inner side of the fixed ring, and a plurality of ventilation through holes are formed in the outer side of the fixed ring and communicated with the gas inlet and outlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410046832.0A CN117549502B (en) | 2024-01-12 | 2024-01-12 | Vacuum low-pressure injection molding system for cosmetic packaging box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410046832.0A CN117549502B (en) | 2024-01-12 | 2024-01-12 | Vacuum low-pressure injection molding system for cosmetic packaging box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117549502A CN117549502A (en) | 2024-02-13 |
| CN117549502B true CN117549502B (en) | 2024-05-28 |
Family
ID=89817101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410046832.0A Active CN117549502B (en) | 2024-01-12 | 2024-01-12 | Vacuum low-pressure injection molding system for cosmetic packaging box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117549502B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6114912A (en) * | 1984-06-30 | 1986-01-23 | Toyoda Gosei Co Ltd | Manufacturing method of molded part |
| FR2995814A1 (en) * | 2012-09-26 | 2014-03-28 | Valeo Vision | VENTILATED INJECTION MOLDING DEVICE |
| CN208681975U (en) * | 2018-07-17 | 2019-04-02 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with Vacuuming structure |
| CN210525733U (en) * | 2019-07-31 | 2020-05-15 | 合肥市诚泰模具有限责任公司 | Uniform injection molding part for mold manufacturing |
| CN211492675U (en) * | 2019-12-27 | 2020-09-15 | 青岛凯隆塑料制品有限公司 | Honeycomb grille injection mold convenient to exhaust |
| CN111907007A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent drawing accurate injection mold of material |
| CN111907005A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Injection mold with elastic ejection structure |
| CN213198633U (en) * | 2020-09-04 | 2021-05-14 | 太仓奇晔塑料制品有限公司 | Injection mold for manufacturing large-size plastic frame body |
| CN216032231U (en) * | 2021-07-15 | 2022-03-15 | 广东文灿模具有限公司 | Exhaust structure for exhaust cavity of mold |
| KR20220101222A (en) * | 2021-01-11 | 2022-07-19 | 경성정밀주식회사 | Molding method for having boss structure with high dimensional accuracy |
| CN218928500U (en) * | 2022-08-08 | 2023-04-28 | 临朐县吉昌包装制品厂 | Exhaust structure of injection mold |
| CN116100763A (en) * | 2023-03-18 | 2023-05-12 | 浙江赛豪实业有限公司 | Vacuumizing device of injection mold |
| CN219095812U (en) * | 2022-12-02 | 2023-05-30 | 无锡晟隆精密科技有限公司 | Injection molding device |
| CN219618372U (en) * | 2023-03-07 | 2023-09-01 | 昆山贵研精密模具有限公司 | Injection mold with vacuumizing function |
| CN219806423U (en) * | 2023-02-10 | 2023-10-10 | 佛山市爱美鑫模塑科技有限公司 | Exhaust device of injection mold |
| CN219947124U (en) * | 2023-04-23 | 2023-11-03 | 广汽本田汽车有限公司 | Mould with inhale exhaust apparatus |
-
2024
- 2024-01-12 CN CN202410046832.0A patent/CN117549502B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6114912A (en) * | 1984-06-30 | 1986-01-23 | Toyoda Gosei Co Ltd | Manufacturing method of molded part |
| FR2995814A1 (en) * | 2012-09-26 | 2014-03-28 | Valeo Vision | VENTILATED INJECTION MOLDING DEVICE |
| CN208681975U (en) * | 2018-07-17 | 2019-04-02 | 广东烨嘉光电科技股份有限公司 | A kind of injection mold with Vacuuming structure |
| CN210525733U (en) * | 2019-07-31 | 2020-05-15 | 合肥市诚泰模具有限责任公司 | Uniform injection molding part for mold manufacturing |
| CN211492675U (en) * | 2019-12-27 | 2020-09-15 | 青岛凯隆塑料制品有限公司 | Honeycomb grille injection mold convenient to exhaust |
| CN111907007A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent drawing accurate injection mold of material |
| CN111907005A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Injection mold with elastic ejection structure |
| CN213198633U (en) * | 2020-09-04 | 2021-05-14 | 太仓奇晔塑料制品有限公司 | Injection mold for manufacturing large-size plastic frame body |
| KR20220101222A (en) * | 2021-01-11 | 2022-07-19 | 경성정밀주식회사 | Molding method for having boss structure with high dimensional accuracy |
| CN216032231U (en) * | 2021-07-15 | 2022-03-15 | 广东文灿模具有限公司 | Exhaust structure for exhaust cavity of mold |
| CN218928500U (en) * | 2022-08-08 | 2023-04-28 | 临朐县吉昌包装制品厂 | Exhaust structure of injection mold |
| CN219095812U (en) * | 2022-12-02 | 2023-05-30 | 无锡晟隆精密科技有限公司 | Injection molding device |
| CN219806423U (en) * | 2023-02-10 | 2023-10-10 | 佛山市爱美鑫模塑科技有限公司 | Exhaust device of injection mold |
| CN219618372U (en) * | 2023-03-07 | 2023-09-01 | 昆山贵研精密模具有限公司 | Injection mold with vacuumizing function |
| CN116100763A (en) * | 2023-03-18 | 2023-05-12 | 浙江赛豪实业有限公司 | Vacuumizing device of injection mold |
| CN219947124U (en) * | 2023-04-23 | 2023-11-03 | 广汽本田汽车有限公司 | Mould with inhale exhaust apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117549502A (en) | 2024-02-13 |
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