CN218928500U - Exhaust structure of injection mold - Google Patents
Exhaust structure of injection mold Download PDFInfo
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- CN218928500U CN218928500U CN202222061474.XU CN202222061474U CN218928500U CN 218928500 U CN218928500 U CN 218928500U CN 202222061474 U CN202222061474 U CN 202222061474U CN 218928500 U CN218928500 U CN 218928500U
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- 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
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Abstract
The utility model discloses an exhaust structure of an injection mold, which relates to the technical field of injection molds and comprises a lower mold and an upper mold arranged at the top of the lower mold in a sliding manner, wherein an exhaust groove is formed in the lower mold, a connecting pipe is connected at the outer port of the exhaust groove in a sealing manner, and the connecting pipe is connected with an air inlet of an external air pump; an auxiliary exhaust piece is arranged in the inner port of the exhaust groove; the auxiliary exhaust piece comprises a top plate arranged in an exhaust groove inner port and a sealing plate arranged at the top of the top plate in a sliding manner, the sealing plate is an inverted convex plate body, an inverted convex notch is formed in the middle of the top plate, a bottom plate is arranged in the exhaust groove, and through holes are formed in the left end and the right end of the bottom plate. According to the utility model, through the cooperation of the exhaust groove and the auxiliary exhaust piece, the air in the cavity can be timely exhausted before the molten raw material is injected, and the sealing and the negative pressure of the whole cavity are ensured when the molten raw material is injected, so that the molten raw material better enters the cavity, and the situation of flash product burrs can not occur.
Description
Technical Field
The utility model relates to the technical field of injection molds, in particular to an exhaust structure of an injection mold.
Background
When the injection mold is closed, part of gas is pressed into or remains in the cavity, when the injection mold is injected, the air in the cavity cannot be completely discharged, so that the molten raw material entering the cavity is insufficient, the quality of a product is disqualified, the existing exhaust mode is to open an opening at the joint of the top surface of the lower mold and the inner wall of the cavity, then the molten raw material extruded into the cavity is utilized to extrude the air for exhaust, but the opened opening can cause the molten raw material to overflow out of the cavity, and then the product is in burrs.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides an exhaust structure of an injection mold.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the injection mold exhaust structure comprises a lower mold and an upper mold which is arranged at the top of the lower mold in a sliding manner, wherein an exhaust groove which is communicated with a cavity of the lower mold is formed in the lower mold, the exhaust groove is in an L shape, a connecting pipe is connected at the outer port of the exhaust groove in a sealing manner, and the connecting pipe is connected with an air inlet of an external air pump; an auxiliary exhaust piece is arranged in the inner port of the exhaust groove;
the auxiliary exhaust piece comprises a top plate and a sealing plate, wherein the top plate is arranged in an exhaust groove inner port and is flush with the bottom surface of a cavity of the lower die, the sealing plate is arranged at the top of the top plate in a sliding mode, the sealing plate is an inverted convex plate body, an inverted convex notch matched with the sealing plate is formed in the middle of the top plate, a bottom plate is arranged in the exhaust groove and located below the top plate, and through holes are formed in the left end and the right end of the bottom plate.
Further, the connecting column arranged at the bottom of the sealing plate is arranged in the bottom plate in a sliding mode, and the diameter size of the connecting column is smaller than the minimum diameter size of the inverted convex notch.
Further, the connecting plate is fixedly sleeved at the middle part of the connecting column, a spring telescopic rod penetrates through the bottom plate, and the top of the telescopic end of the spring telescopic rod is fixedly connected with the bottom of the connecting plate.
Further, a sealing rubber sleeve is sleeved outside the sealing plate.
Further, the screw thread piece is integrally arranged at the bottom of the sealing plate, and the inner thread groove screwed with the screw thread piece is formed in the top of the connecting column.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, through the cooperation of the exhaust groove and the auxiliary exhaust piece, the air in the cavity can be timely exhausted before the molten raw material is injected, and the sealing and the negative pressure of the whole cavity are ensured when the molten raw material is injected, so that the molten raw material better enters the cavity, and the situation of flash product burrs can not occur.
Drawings
Fig. 1 is a schematic diagram of the overall structure of an exhaust structure of an injection mold according to the present utility model;
fig. 2 is a schematic diagram of an internal structure of an exhaust structure of an injection mold according to the present utility model;
FIG. 3 is a schematic diagram showing a state of clamping an upper mold and a lower mold in an exhaust structure of an injection mold according to the present utility model;
fig. 4 is a schematic diagram illustrating an internal structure of an auxiliary exhaust member in an exhaust structure of an injection mold according to the present utility model;
fig. 5 is a schematic diagram illustrating an internal structure of an auxiliary exhaust member in a sealed state in an exhaust structure of an injection mold according to the present utility model.
Number in the figure: 1. a lower die; 2. an upper die; 3. an exhaust groove; 4. an auxiliary exhaust member; 5. a connecting pipe; 6. sealing the rubber sleeve; 41. a top plate; 42. a sealing plate; 43. a bottom plate; 44. a connecting plate; 45. a spring telescoping rod; 46. and (5) connecting the columns.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1-5, an injection mold exhaust structure comprises a lower mold 1 and an upper mold 2 slidably arranged at the top of the lower mold 1, wherein an exhaust groove 3 communicated with a cavity of the lower mold 1 is formed in the lower mold 1, the exhaust groove 3 is in an L shape, a connecting pipe 5 is connected at an outer port of the exhaust groove 3 in a sealing manner, and the connecting pipe 5 is connected with an air inlet of an external air pump; an auxiliary exhaust piece 4 is arranged in the inner port of the exhaust groove 3; the auxiliary exhaust piece 4 comprises a top plate 41 arranged in the inner port of the exhaust groove 3 and flush with the bottom surface of the cavity of the lower die 1, and a sealing plate 42 arranged at the top of the top plate 41 in a sliding manner, wherein the sealing plate 42 is an inverted convex plate body, the inverted convex sealing plate 42 can ensure better tightness with the top plate 41, the outer ring bottom edge of the upper wide surface section of the sealing plate 42 and the outer ring bottom edge of the lower narrow surface section of the sealing plate 42 are both provided with chamfers, inverted convex notches matched with the sealing plate 42 are formed in the middle of the top plate 41, a bottom plate 43 is arranged in the exhaust groove 3 and positioned below the top plate 41, through holes are formed in the left end and the right end of the bottom plate 43, the through holes and the inverted convex notches are all ensured to be always communicated with the cavity of the lower die 1, air in the cavity can be timely discharged before molten raw materials are injected into the cavity through the cooperation of the exhaust groove 3, and the sealing and negative pressure of the whole cavity are ensured when molten raw materials are injected into the cavity, so that molten raw materials better enter the cavity, and the situation of flash products cannot occur.
Further, the connecting column 46 mounted at the bottom of the sealing plate 42 is arranged in the bottom plate 43 in a sliding manner, the diameter size of the connecting column 46 is smaller than the minimum diameter size of the inverted convex notch, and the inverted convex notch is prevented from being blocked when air in the cavity of the lower die 1 is not discharged; the middle part of the connecting column 46 is fixedly sleeved with a connecting plate 44, a spring telescopic rod 45 is arranged in the bottom plate 43 in a penetrating manner, and the top of the telescopic end of the spring telescopic rod 45 is fixedly connected with the bottom of the connecting plate 44, so that the sealing plate 42 can be reset conveniently; the sealing rubber sleeve 6 is sleeved outside the sealing plate 42, so that the sealing performance between the sealing plate 42 and the top plate 41 is improved; the screw block is integrally arranged at the bottom of the sealing plate 42, and the top of the connecting column 46 is provided with an internal screw groove screwed with the screw block, so that the sealing plate 42 can be conveniently installed.
Working principle: when the mold is ready for injection molding and mold closing, the mold core at the bottom of the upper mold 2 slowly enters the cavity of the lower mold 1, so that the cavity of the lower mold 1 is relatively closed, at the moment, the external air pump is started, through the connecting pipe 5, air in the cavity of the lower mold 1 is enabled to enter the horizontal section of the air discharge groove 3 along the inverted convex notch of the top plate 41 and then is discharged from the through hole in the bottom plate 43, when the mold core of the lower mold 1 completely enters the cavity of the lower mold 1, the sealing plate 42 is extruded and moved downwards to completely coincide with the inverted convex notch of the top plate 41, the top of the sealing plate 42 is flush with the inner wall at the bottom of the mold core of the lower mold 1, the air pump is closed, at the moment, the air in the mold core of the lower mold 1 is completely sucked out by the external air pump, meanwhile, the spring telescopic rod 45 is compressed, molten raw materials are injected into the cavity, and after the injection molding is finished, the mold is started, the sealing plate 42 is separated from the top plate 41 and is jacked again under the action of the spring telescopic rod 45, so that the air discharge groove 3 is continuously communicated with the cavity of the lower mold 1.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (5)
1. The exhaust structure of the injection mold is characterized by comprising a lower mold (1) and an upper mold (2) arranged at the top of the lower mold (1) in a sliding manner, wherein an exhaust groove (3) communicated with a cavity of the lower mold (1) is formed in the lower mold (1), the exhaust groove (3) is in an L shape, a connecting pipe (5) is connected at the outer port of the exhaust groove (3) in a sealing manner, and the connecting pipe (5) is connected with an air inlet of an external air pump; an auxiliary exhaust piece (4) is arranged in the inner port of the exhaust groove (3);
the auxiliary exhaust piece (4) comprises a top plate (41) arranged in an inner port of the exhaust groove (3) and flush with the bottom surface of a cavity of the lower die (1) and a sealing plate (42) arranged at the top of the top plate (41) in a sliding mode, the sealing plate (42) is an inverted convex plate body, an inverted convex notch matched with the sealing plate (42) is formed in the middle of the top plate (41), a bottom plate (43) is arranged in the exhaust groove (3) and located below the top plate (41), and through holes are formed in the left end and the right end of the bottom plate (43).
2. The exhaust structure of an injection mold according to claim 1, wherein a connecting post (46) mounted at the bottom of the sealing plate (42) is slidably provided in the bottom plate (43), and a diameter dimension of the connecting post (46) is smaller than a minimum diameter dimension of the inverted convex notch.
3. The exhaust structure of an injection mold according to claim 2, wherein a connecting plate (44) is fixedly sleeved at the middle part of the connecting column (46), a spring telescopic rod (45) is arranged in the bottom plate (43) in a penetrating manner, and the top of the telescopic end of the spring telescopic rod (45) is fixedly connected with the bottom of the connecting plate (44).
4. The exhaust structure of the injection mold according to claim 2, wherein the sealing plate (42) is externally sleeved with a sealing rubber sleeve (6).
5. The exhaust structure of an injection mold according to claim 2, wherein the bottom of the sealing plate (42) is integrally provided with a screw block, and the top of the connecting column (46) is provided with an internal screw groove screwed with the screw block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222061474.XU CN218928500U (en) | 2022-08-08 | 2022-08-08 | Exhaust structure of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222061474.XU CN218928500U (en) | 2022-08-08 | 2022-08-08 | Exhaust structure of injection mold |
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| Publication Number | Publication Date |
|---|---|
| CN218928500U true CN218928500U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222061474.XU Active CN218928500U (en) | 2022-08-08 | 2022-08-08 | Exhaust structure of injection mold |
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| CN (1) | CN218928500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117549502A (en) * | 2024-01-12 | 2024-02-13 | 广东益发塑胶实业有限公司 | Vacuum low-pressure injection molding system for cosmetic packaging box |
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2022
- 2022-08-08 CN CN202222061474.XU patent/CN218928500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117549502A (en) * | 2024-01-12 | 2024-02-13 | 广东益发塑胶实业有限公司 | Vacuum low-pressure injection molding system for cosmetic packaging box |
| CN117549502B (en) * | 2024-01-12 | 2024-05-28 | 广东益发塑胶实业有限公司 | Vacuum low-pressure injection molding system for cosmetic packaging box |
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