CN210733149U - Injection mold of auto parts with loudspeaker mesh - Google Patents
Injection mold of auto parts with loudspeaker mesh Download PDFInfo
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- CN210733149U CN210733149U CN201921589648.1U CN201921589648U CN210733149U CN 210733149 U CN210733149 U CN 210733149U CN 201921589648 U CN201921589648 U CN 201921589648U CN 210733149 U CN210733149 U CN 210733149U
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- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 52
- 238000000034 method Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 abstract description 13
- 230000007547 defect Effects 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses an injection mold of an automobile part with horn meshes, which comprises an upper mold and a lower mold, wherein the lower mold is provided with a horn mesh insert at a mold cavity, the bottom of the lower mold is provided with an ejection mechanism, and an ejector pin in the ejection mechanism is connected in the lower mold and the horn mesh insert in a sliding manner; the injection mold also comprises an air extraction device, and the air extraction device comprises a controller, an air extractor, a pneumatic piston and a pneumatic valve; the controller, the air ejector and the pneumatic piston are respectively connected in the lower die, the controller is electrically connected with the air ejector through signals, the pneumatic valve is connected in the lower die and communicated with an air hole of the pneumatic piston, the other air hole of the pneumatic piston is communicated with a first air hole of the air ejector, a second air hole of the air ejector is communicated with the controller and communicated with a sliding cavity of an ejector pin in the ejection mechanism, and the sliding cavity is communicated with the die cavity. After the structure is adopted, injection molding defects such as air holes caused by incomplete exhaust are avoided, and the yield of products is improved.
Description
Technical Field
The utility model relates to an injection mold's technical field, specifically say an injection mold of auto parts with loudspeaker mesh.
Background
In all automotive interiors, speaker meshes, such as sound screens, are present, and the conventional manufacturing process for such automotive parts with speaker meshes is usually injection molding by means of an injection mold. In the injection molding process, the horn mesh holes cannot be timely discharged due to the fact that gas in the cavity cannot be timely discharged, so that the molding is difficult, the injection molding pressure is large, the injection molding period is long, in addition, the defects of sink marks, welding marks, burrs and the like exist on the surface of an injection molding product, the requirements of customers cannot be met, and the qualified rate of the injection molding product is reduced.
In the prior art, as many exhaust inserts as possible are usually arranged in the horn mesh area, and the gas in the cavity is exhausted through the gaps of the exhaust inserts due to the pressure generated during the filling of the molten rubber during the injection molding. For example, the patent with the publication number of CN208801563U disclosed by the national intellectual property office, a horn mesh structure of an automobile door plate injection mold with a nested exhaust insert, comprises a forming insert attached to the bottom surface of an injection product, the exhaust insert is movably connected inside the forming insert, a plurality of exhaust through grooves are arranged between the exhaust insert and the forming insert, and the exhaust through grooves are communicated with the bottom surface of the injection product. However, the injection mold of this structure has disadvantages in that:
1) because the gap of the exhaust insert pin can not actively exhaust the gas in the die cavity in time, the poor defects of 'air holes', 'insufficient filling', and the like can still occur in the product in the injection molding process because of insufficient exhaust;
2) once the production time is long, the situation that the exhaust gap is blocked by the molten rubber is easy to occur, so that the whole set of die needs to be disassembled and assembled, and the die is maintained, cleaned, maintained and the like, which wastes time and labor;
therefore, the injection mold of the prior art for the automobile part with the horn mesh has the problems of high working strength, high cost and low efficiency.
Disclosure of Invention
The utility model aims to solve the technical problem that an avoid because of the incomplete defect of moulding plastics such as "gas pocket", "gas trace", "local scarce glue" that produces of exhaust is provided to required pressure when having greatly reduced moulding plastics improves the injection mold of the auto parts that have loudspeaker mesh of the yields of mould reliability and production efficiency and improvement goods.
In order to solve the technical problem, the utility model provides an injection mold of auto parts with horn mesh, including upper die and lower die, form the die cavity of auto parts with horn mesh after upper die and lower die compound die, the lower die is equipped with horn mesh insert at the die cavity, the lower die bottom is equipped with ejection mechanism, the thimble in the ejection mechanism is connected in lower die and horn mesh insert in a sliding manner; the injection mold also comprises an air extraction device, and the air extraction device comprises a controller, an air extractor, a pneumatic piston and a pneumatic valve; the controller, the air ejector and the pneumatic piston are respectively connected in the lower die, the controller is electrically connected with the air ejector through signals, the pneumatic valve is connected in the lower die and communicated with an air hole of the pneumatic piston, the other air hole of the pneumatic piston is communicated with a first air hole of the air ejector, a second air hole of the air ejector is communicated with the controller and communicated with a sliding cavity of an ejector pin in the ejection mechanism, and the sliding cavity is communicated with the die cavity.
As an improvement, a first sealing device is arranged between the upper die and the lower die; this first sealing device is equipped with the seal groove along mould edge all around on the die joint of lower mould, and the seal groove is embedded to have first sealing washer.
As a further improvement, the cross section of the sealing groove is triangular.
As an improvement, a second sealing device used for sealing the sliding cavity is arranged at the port of the sliding connection of the thimble in the lower die and the ejection mechanism.
As a further improvement, the second sealing device comprises a sealing sleeve and a second sealing ring, the outer wall of the sealing sleeve is fixedly connected with the lower die, the inner wall of the sealing sleeve is in sliding connection with the ejector pin, and the second sealing ring is embedded at the other end, far away from the port of the lower die, of the sealing sleeve and forms sealing with the ejector pin and the sliding cavity.
After the structure more than adopting, compared with the prior art, the utility model, have following advantage:
1) because the air extractor is arranged in the injection mold, the air in the cavity of the mold is evacuated by the air extractor through the controller, so that the product quality problem caused by the fact that the air in the cavity is extruded and heated by molten glue is avoided, the injection molding defects of air holes, air marks, local glue shortage and the like caused by incomplete exhaust are avoided, and the pressure required during injection molding is greatly reduced; meanwhile, the structure improves the reliability and the production efficiency of the die, improves the yield of products, is very advanced, convenient and practical, and saves the cost;
2) a first sealing device is arranged on the parting surface of the lower die between the upper die and the lower die along the periphery of the edge of the die, so that a die cavity of the die is a closed space before injection molding after die assembly;
3) the first sealing device adopts a structure of a triangular sealing groove and a sealing ring, so that the sealing ring is placed in the sealing groove more firmly and cannot fall off;
4) the sealing sleeve is placed at the position where the ejector pin is connected with the lower die, so that the sealing assembly of the position is further guaranteed, the die cavity can be more formed into a closed space, air leakage is avoided, and the efficiency of air extraction during working is improved.
Drawings
Fig. 1 is a schematic structural view of the injection mold for automobile parts with horn meshes of the present invention.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.
Wherein, 1, an upper die; 2. a lower die; 3. automotive parts; 4. a horn mesh insert; 5. a thimble; 6. a controller; 7. an air extractor; 8. a pneumatic piston; 9. a pneumatic valve; 10. a sealing groove; 11. a first seal ring; 12. parting surfaces; 13. a sliding cavity; 14. sealing sleeves; 15. and a second seal ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
By figure 1 ~ 3 show the utility model discloses auto parts's with loudspeaker mesh injection mold's schematic structure diagram can know, and it includes mould 1 and lower mould 2, go up the die cavity that forms the auto parts 3 that have loudspeaker mesh behind the compound die of mould 1 and lower mould 2, lower mould 2 is equipped with the loudspeaker mesh in die cavity department and inserts 4, and 2 bottoms of lower mould are equipped with ejection mechanism, and 5 sliding connection of thimble among the ejection mechanism are in lower mould 2 and loudspeaker mesh insert 4. The injection mold further comprises an air extraction device, and the air extraction device comprises a controller 6, an air extractor 7, a pneumatic piston 8 and a pneumatic valve 9. The controller 6, the air ejector 7 and the pneumatic piston 8 are respectively connected in the lower die 2, the controller 6 is in signal electrical connection with the air ejector 7, the pneumatic valve 9 is connected in the lower die 2 and communicated with an air hole of the pneumatic piston 8, the other air hole of the pneumatic piston 8 is communicated with a first air hole of the air ejector 7, a second air hole of the air ejector 7 is communicated with the controller 6 and communicated with a sliding cavity 13 of the ejector pin 5 in the ejection mechanism, and the sliding cavity 13 is communicated with the die cavity.
And a first sealing device is arranged between the upper die 1 and the lower die 2. This first sealing device is equipped with seal groove 10 along mould edge all around on the die joint 12 of lower mould 2, and seal groove 10 is embedded to have first sealing washer 11.
The cross section of the sealing groove 10 is triangular.
And a second sealing device for sealing the sliding cavity 13 is arranged at the port where the thimble 5 in the lower die 2 and the ejection mechanism slides and is connected.
The second sealing device comprises a sealing sleeve 14 and a second sealing ring 15, the outer wall of the sealing sleeve 14 is fixedly connected with the lower die 2, the inner wall of the sealing sleeve 14 is in sliding connection with the ejector pin 5, and the second sealing ring 15 is embedded in the other end, far away from the port of the lower die 2, of the sealing sleeve 14 and forms sealing with the ejector pin 5 and the sliding cavity 13.
The working principle of the injection mold is as follows: after the upper die and the lower die are closed, the controller 6 gives a signal to drive the air ejector 7 to work, the air ejector 7 blows air to drive the pneumatic piston 8 to work, and the pneumatic piston 8 is ejected out to cause the pneumatic valve 9 to be opened. Then the controller 6 gives a signal to drive the air extractor 7 to work, the air extractor 7 works, and air in the mold cavity is extracted through the sliding cavity 13, so that the interior of the mold cavity is in a vacuum state. The pneumatic valve 9 is reset closed. And finally, starting injection molding.
The above description is only a preferred and feasible embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and various other modifications made by the technical solutions and concepts of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An injection mold of an automobile part with horn meshes comprises an upper mold (1) and a lower mold (2), wherein a mold cavity of the automobile part (3) with horn meshes is formed after the upper mold (1) and the lower mold (2) are assembled, a horn mesh insert (4) is arranged at the mold cavity of the lower mold (2), an ejection mechanism is arranged at the bottom of the lower mold (2), and an ejector pin (5) in the ejection mechanism is connected in the lower mold (2) and the horn mesh insert (4) in a sliding manner; the method is characterized in that: the injection mold also comprises an air extraction device, and the air extraction device comprises a controller (6), an air extractor (7), a pneumatic piston (8) and a pneumatic valve (9); the device is characterized in that the controller (6), the air extractor (7) and the pneumatic piston (8) are respectively connected in the lower die (2), the controller (6) is in signal electrical connection with the air extractor (7), the pneumatic valve (9) is connected in the lower die (2) and communicated with an air hole of the pneumatic piston (8), another air hole of the pneumatic piston (8) is communicated with a first air hole of the air extractor (7), a second air hole of the air extractor (7) is communicated with the controller (6) and communicated with a sliding cavity (13) of an ejector pin (5) in the ejection mechanism, and the sliding cavity (13) is communicated with a die cavity.
2. The injection mold for automobile parts with horn meshes as set forth in claim 1, wherein: a first sealing device is arranged between the upper die (1) and the lower die (2); this first sealing device is equipped with seal groove (10) along mould edge all around on die joint (12) of lower mould (2), and seal groove (10) are embedded to have first sealing washer (11).
3. The injection mold for automobile parts with horn meshes as set forth in claim 2, wherein: the cross section of the sealing groove (10) is triangular.
4. The injection mold for automobile parts with horn meshes as set forth in claim 1, wherein: and a second sealing device for sealing the sliding cavity (13) is arranged at the port where the ejector pin (5) in the lower die (2) and the ejection mechanism is connected in a sliding manner.
5. The injection mold for automobile parts with horn meshes as set forth in claim 4, wherein: the second sealing device comprises a sealing sleeve (14) and a second sealing ring (15), the outer wall of the sealing sleeve (14) is fixedly connected with the lower die (2), the inner wall of the sealing sleeve (14) is in sliding connection with the ejector pin (5), and the second sealing ring (15) is embedded in the other end, away from the port of the lower die (2), of the sealing sleeve (14) and forms sealing with the ejector pin (5) and the sliding cavity (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589648.1U CN210733149U (en) | 2019-09-23 | 2019-09-23 | Injection mold of auto parts with loudspeaker mesh |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921589648.1U CN210733149U (en) | 2019-09-23 | 2019-09-23 | Injection mold of auto parts with loudspeaker mesh |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210733149U true CN210733149U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921589648.1U Expired - Fee Related CN210733149U (en) | 2019-09-23 | 2019-09-23 | Injection mold of auto parts with loudspeaker mesh |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210733149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539456A (en) * | 2019-09-23 | 2019-12-06 | 宁波日跃模塑有限公司 | Injection mold of auto parts with loudspeaker mesh |
-
2019
- 2019-09-23 CN CN201921589648.1U patent/CN210733149U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110539456A (en) * | 2019-09-23 | 2019-12-06 | 宁波日跃模塑有限公司 | Injection mold of auto parts with loudspeaker mesh |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |