CN215825828U - Auxiliary mechanism of injection molding mold - Google Patents
Auxiliary mechanism of injection molding mold Download PDFInfo
- Publication number
- CN215825828U CN215825828U CN202121989165.8U CN202121989165U CN215825828U CN 215825828 U CN215825828 U CN 215825828U CN 202121989165 U CN202121989165 U CN 202121989165U CN 215825828 U CN215825828 U CN 215825828U
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- China
- Prior art keywords
- valve needle
- sealing valve
- pin shaft
- molding cavity
- needle
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 238000000465 moulding Methods 0.000 claims abstract description 32
- 238000007599 discharging Methods 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 230000000295 complement effect Effects 0.000 claims description 7
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an auxiliary mechanism of an injection molding mold, which comprises: the device comprises a material sealing valve needle, a material discharging valve needle, a seesaw assembly, a gas needle and a material discharging pipe; the material sealing valve needle and the material discharging valve needle are respectively arranged at two ends of the seesaw component, and the seesaw component drives the material sealing valve needle and the material discharging valve needle to move up and down; the material sealing valve needle is arranged at the feeding hole of the molding cavity, and the flow channel is communicated with the molding cavity through the material sealing valve needle; the discharge valve needle is arranged at the discharge port of the molding cavity; the gas needle is arranged at the feeding end of the molding cavity and is connected with the inflating device; the discharge pipe is arranged at the discharge end of the molding cavity and communicated with the molding cavity. Through the mode, the pressure maintaining process of the plastic product is performed by injecting high-pressure nitrogen into the forming cavity of the forming die, so that the surface sink marks of the product appearance can be improved, the product quality is improved, and the cost of plastic raw materials is reduced.
Description
Technical Field
The utility model relates to the field of injection molding, in particular to an auxiliary mechanism of an injection molding mold.
Background
The conventional injection mold forming process is generally: filling, pressure maintaining, cooling, mold opening, ejection, workpiece taking and mold closing, and then carrying out the next cycle. At present, the wall thickness of an automobile electronic product is thicker and thicker along with the requirements of product functions and appearance, so that the appearance sink marks of the product are difficult to solve, and plastic raw materials are wasted.
The traditional injection molding mold is easy to produce appearance sink marks when producing injection molding parts with thick wall thickness, because the product is difficult to cool due to too thick material in the molding process, the cooling period is too long, uneven cooling is caused, and uneven product temperature easily causes severe product buckling deformation.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an auxiliary mechanism of an injection molding mold.
The utility model provides an injection moulding mould's complementary unit, complementary unit sets up on the forming die body, is provided with forming cavity and runner on the forming die body, and the runner communicates with forming cavity, and complementary unit includes: the device comprises a material sealing valve needle, a material discharging valve needle, a seesaw assembly, a gas needle and a material discharging pipe; the material sealing valve needle and the material discharging valve needle are respectively arranged at two ends of the seesaw component, and the seesaw component drives the material sealing valve needle and the material discharging valve needle to move up and down; the material sealing valve needle is arranged at a feed port of the molding cavity, and the flow channel is communicated with the molding cavity through the material sealing valve needle; the discharge valve needle is arranged at a discharge port of the molding cavity; the gas needle is arranged at the feeding end of the molding cavity and is connected with an inflating device; the discharge pipe is arranged at the discharge end of the molding cavity and communicated with the molding cavity.
Preferably, the material sealing valve needle and the material discharging valve needle are detachably connected with the seesaw component.
Preferably, the seesaw component comprises a supporting seat, a connecting rod and a first pin shaft, the connecting rod is arranged on the supporting seat through the first pin shaft and is rotatably connected with the first pin shaft, and the material sealing valve needle and the material discharging valve needle are respectively arranged at two ends of the connecting rod.
Preferably, the seesaw assembly further comprises a fixed seat, a connecting hole is formed in one end, connected with the material discharging valve needle, of the connecting rod, the connecting hole is transversely formed, the fixed seat is connected with the connecting rod through a second pin shaft, the second pin shaft penetrates through the connecting hole, and the second pin shaft moves in the connecting hole.
Preferably, one end of the connecting rod, which is connected with the sealing valve needle, is provided with a limiting groove, the sealing valve needle is inserted into the limiting groove and connected with a third pin shaft, and the sealing valve needle is connected with the connecting rod through the third pin shaft.
Preferably, the gas filled by the inflation device is nitrogen.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
the utility model provides an injection moulding mould's complementary unit carries out the pressurize process to plastic products through pouring into high-pressure nitrogen gas into forming die's shaping cavity to can improve product appearance surface sink mark, promote product quality, reduce plastic material cost.
Drawings
Fig. 1 is a schematic structural diagram of an auxiliary mechanism of an injection molding mold according to the present invention.
FIG. 2 is a cross-sectional view of an auxiliary mechanism of an injection mold according to the present invention mounted on a molded injection body.
Description of reference numerals:
1. sealing the valve needle; 2. a discharge valve needle; 3. a seesaw assembly; 31. a supporting seat; 32. a connecting rod; 33. a first pin shaft; 34. a fixed seat; 35. a second pin shaft; 36. a third pin shaft; 4. air needle; 5. a discharge pipe; 6. forming a mold body; 7. and (5) producing the product.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
Referring to the drawings, an auxiliary mechanism of an injection molding mold is arranged on a molding mold body 6, a molding cavity and a flow channel are arranged on the molding mold body 6, the flow channel is communicated with the molding cavity, and the auxiliary mechanism comprises: the device comprises a sealing valve needle 1, a discharging valve needle 2, a seesaw component 3, a gas needle 4 and a discharging pipe 5.
The sealing valve needle 1 and the discharging valve needle 2 are respectively arranged at two ends of the seesaw component 3, and the seesaw component 3 drives the sealing valve needle 1 and the discharging valve needle 2 to move up and down. Under the action of the seesaw, when the sealing material valve needle 1 moves upwards, the discharging valve needle 2 moves downwards; when the sealing material valve needle 1 moves downwards, the discharging valve needle 2 moves upwards.
The material sealing valve needle 1 is arranged at a feeding hole of the molding cavity, and the flow channel is communicated with the molding cavity through the material sealing valve needle 1. After plastic raw materials are injected into the forming cavity of the forming die body 6, the feeding hole of the forming cavity is sealed by the sealing material valve needle 1.
The gas needle 4 is arranged at the feeding end of the molding cavity, the gas needle 4 is connected with an inflating device, and the gas inflated by the inflating device is nitrogen. The inflator may be any inflator known in the art. After the product 7 is preliminarily formed, high-pressure gas is filled into the forming cavity of the forming die body 6 through the gas needle 4 by using the inflating device, and fluid in the product 7 is blown out.
The discharge valve needle 2 is arranged at the discharge opening of the molding cavity. The discharge pipe 5 is arranged at the discharge end of the molding cavity, the discharge pipe 5 is communicated with the molding cavity, and fluid inside the product 7 blown out by high-pressure gas is discharged through the discharge pipe 5.
When plastic raw materials are injected into the forming cavity of the forming die body 6, the discharge valve needle 2 moves upwards to block the discharge port of the forming cavity; after the plastic material is injected into the molding cavity of the molding mold body 6, the discharge valve needle 2 moves down to communicate the discharge pipe 5 with the molding cavity.
In order to facilitate the replacement of the sealing valve needle 1 and the discharging valve needle 2, the sealing valve needle 1 and the discharging valve needle 2 are detachably connected with the seesaw component 3 and can be connected through bolts.
The seesaw component 3 comprises a supporting seat 31, a connecting rod 32 and a first pin shaft 33, the connecting rod 32 is arranged on the supporting seat 31 through the first pin shaft 33, the connecting rod 32 is rotatably connected with the first pin shaft 33, and the sealing valve needle 1 and the discharging valve needle 2 are respectively arranged at two ends of the connecting rod 32.
The seesaw component 3 further comprises a fixing seat 34, a connecting hole is formed in one end, connected with the material discharging valve needle 2, of the connecting rod 32, the connecting hole is transversely formed, the fixing seat 34 is connected with the connecting rod 32 through a second pin shaft 35, the second pin shaft 35 penetrates through the connecting hole, and the second pin shaft 35 moves in the connecting hole. The fixing seat 34 can move up and down smoothly through the arrangement of the connecting holes, and the stability is improved.
One end of the connecting rod 32 connected with the sealing valve needle 1 is provided with a limiting groove, the sealing valve needle 1 is inserted into the limiting groove to be connected with a third pin shaft 36, and the sealing valve needle 1 is connected with the connecting rod 32 through the third pin shaft 36.
In the actual use process, when the plastic raw material is filled to 80-90% of the weight of the product in a solid state along the flow channel, the connecting rod 32 rotates under the action of the oil cylinder, and the discharge valve needle 2 moves downwards to open the discharge port. Meanwhile, the material sealing valve needle 1 moves upwards to block the feed inlet, so that the plastic raw material is prevented from flowing back when the air needle 4 blows air. The inflation device is activated and high pressure gas injection is started, gas being injected through the gas needle 4 into the interior of the product 7. The product 7 is not cooled at the thickest part of the product 7, and the thick uncooled plastic material is pushed out along the discharge opening under the thrust of high-pressure gas. The hot plastic material pushed out by the gas enters the discharge pipe 5.
The plastic raw material on the surface of the mold is cooled and solidified by a cooling system, because the wall thickness of the product 7 is too thick, the plastic at the center of the product 7 is cooled slowly, when gas is injected, the plastic at the thick part of the mold wall is extruded to a discharge area, so that the center of the product 7 is in a hollow state, the average wall thickness of the product 7 is achieved, and the appearance sink mark of the product 7 can be improved only when the wall thickness of the product 7 is average.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The utility model provides an injection moulding mould's complementary unit, complementary unit sets up on the forming die body, is provided with forming cavity and runner on the forming die body, runner and forming cavity intercommunication, its characterized in that, complementary unit includes: the device comprises a material sealing valve needle, a material discharging valve needle, a seesaw assembly, a gas needle and a material discharging pipe; the material sealing valve needle and the material discharging valve needle are respectively arranged at two ends of the seesaw component, and the seesaw component drives the material sealing valve needle and the material discharging valve needle to move up and down; the material sealing valve needle is arranged at a feed port of the molding cavity, and the flow channel is communicated with the molding cavity through the material sealing valve needle; the discharge valve needle is arranged at a discharge port of the molding cavity; the gas needle is arranged at the feeding end of the molding cavity and is connected with an inflating device; the discharge pipe is arranged at the discharge end of the molding cavity and communicated with the molding cavity.
2. An injection molding mold assist mechanism as claimed in claim 1, wherein: the material sealing valve needle and the material discharging valve needle are detachably connected with the seesaw component.
3. An injection molding mold assist mechanism as claimed in claim 1, wherein: the seesaw component comprises a supporting seat, a connecting rod and a first pin shaft, the connecting rod is arranged on the supporting seat through the first pin shaft and is rotatably connected with the first pin shaft, and the material sealing valve needle and the material discharging valve needle are respectively arranged at two ends of the connecting rod.
4. An injection molding mold assist mechanism as claimed in claim 3, wherein: the seesaw component further comprises a fixed seat, a connecting hole is formed in one end, connected with the material discharging valve needle, of the connecting rod, the connecting hole is transversely formed, the fixed seat is connected with the connecting rod through a second pin shaft, the second pin shaft penetrates through the connecting hole, and the second pin shaft moves in the connecting hole.
5. An injection molding mold assist mechanism as claimed in claim 3, wherein: and one end of the connecting rod, which is connected with the sealing valve needle, is provided with a limit groove, the sealing valve needle is inserted into the limit groove and is connected with a third pin shaft, and the sealing valve needle is connected with the connecting rod through the third pin shaft.
6. An injection molding mold assist mechanism as claimed in claim 1, wherein: the gas filled by the air filling device is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121989165.8U CN215825828U (en) | 2021-08-23 | 2021-08-23 | Auxiliary mechanism of injection molding mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121989165.8U CN215825828U (en) | 2021-08-23 | 2021-08-23 | Auxiliary mechanism of injection molding mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215825828U true CN215825828U (en) | 2022-02-15 |
Family
ID=80196042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121989165.8U Active CN215825828U (en) | 2021-08-23 | 2021-08-23 | Auxiliary mechanism of injection molding mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215825828U (en) |
-
2021
- 2021-08-23 CN CN202121989165.8U patent/CN215825828U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 4, No. 280 10th Street, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province, 310018 Patentee after: Yinawei (Hangzhou) Intelligent Technology Co.,Ltd. Country or region after: China Address before: 310018 No. 280, No. 10 Baiyang street, Qiantang New District, Hangzhou, Zhejiang Patentee before: INTERPLEX ELECTRONIC (HANGZHOU) CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address |