CN201808189U - Runner of molding entrance system of one-mould two-hole injection molding - Google Patents
Runner of molding entrance system of one-mould two-hole injection molding Download PDFInfo
- Publication number
- CN201808189U CN201808189U CN201020539719XU CN201020539719U CN201808189U CN 201808189 U CN201808189 U CN 201808189U CN 201020539719X U CN201020539719X U CN 201020539719XU CN 201020539719 U CN201020539719 U CN 201020539719U CN 201808189 U CN201808189 U CN 201808189U
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- CN
- China
- Prior art keywords
- runner
- mould
- molding
- cave
- injection molding
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- 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.)
- Expired - Lifetime
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a runner of a molding entrance system of a one-mould two-hole injection molding, which comprises a runner body, wherein two sides of the runner body are respectively provided with a pouring gate, and is characterized in that: the runner body is S-shaped. The runner has the advantages that: internal stress of injection molding near the runner pouring gate can be remarkably reduced; and balance of the filling in two holes of one mould can be realized, and the quality homogeneity of the two-hole product can be improved.
Description
Technical field
The utility model relates to a kind of mould that is used for a mould two cave transparent injection-molded parts and advances to water the runner of system.
Background technology
For the injecting products of PMMA transparent material,, make it in later stage use or temperature shock and cold cycling testing experiment, cracking phenomena often occur because there is internal stress in product after the injection moulding.Processing mode for the injecting products internal stress much is to carry out the secondary baking destressing, and this very easily causes bad orders such as scuffing, dust pollution to clear glass outward appearance part.The product in one mould, two caves, injection moulding filling balance also is most important to the quality and the homogeneity of two cave products.
Summary of the invention
The purpose of this utility model provides a kind of runner that can improve a mould two cave transparent injection-molded parts internal stress.
In order to achieve the above object, the technical solution of the utility model has provided a kind of mould that is used for a mould two cave transparent injection-molded parts and has advanced to water the runner of system, comprises the runner body, has a cast gate in the both sides of runner body, and it is characterized in that: the runner body is S-shaped.
Further, described cast gate center is offset h in opposite directions, 0.8≤h≤1.2mm.
The diameter of described runner body is 6-10mm.
The utility model has the advantages that: significantly reduce near the internal stress of annotating part of cast gate; Reach the harmony of a mould two cave fillings, improve the homogeneity of two cave product qualities.
Summary of the invention
Fig. 1 advances to water the runner of system for a kind of mould that is used for a mould two cave transparent injection-molded parts that the utility model provides.
The specific embodiment
Specify the utility model below in conjunction with embodiment.
Embodiment
As shown in Figure 1, a kind of mould that is used for a mould two cave transparent injection-molded parts that provides for the utility model advances to water the runner of system, comprises runner body 1, has a cast gate 2 in the both sides of runner body 1, and runner body 1 is S-shaped.
Existing stress to concentrate the most tangible basic reason near the cast gate is that the PMMA macromolecule is injecting the die cavity process, because the gate area comparative resistance is big, under pressure, at this regional relative velocity height, the macromolecule long-chain is in the state of being straightened, keep high relatively packing density again under the dwell pressure effect, the long strand that is straightened has little time to shrink the release physical elastic energy, thereby causes near the internal stress that produces of notes spare cast gate of depanning.
The utility model is designed to S shape with runner body 1, is beneficial to the buffering injection pressure, makes filling more steady, can improve surperficial swash and envelope weld bond defective.Cast gate 2 centers are offset h in opposite directions simultaneously, and h=1mm can effectively improve the balance of two cave fillings, annotate part quality homogeneity thereby improve two caves.Runner body 1 diameter design 8mm, the gate shape design is full, and resistance is little, helps reducing filling and dwell pressure.
By above design optimization, cast gate annex problem of stress concentration significantly improves, and makes to annotate part smoothly by temperature shock and cold cycling test, does not ftracture.
Claims (3)
1. a mould that is used for a mould two cave transparent injection-molded parts advances to water the runner of system, comprises runner body (1), has a cast gate (2) in the both sides of runner body (1), and it is characterized in that: runner body (1) is S-shaped.
2. a kind of mould that is used for a mould two cave transparent injection-molded parts as claimed in claim 1 advances to water the runner of system, and it is characterized in that: described cast gate (2) center is offset h, 0.8≤h≤1.2mm in opposite directions.
3. a kind of mould that is used for a mould two cave transparent injection-molded parts as claimed in claim 1 advances to water the runner of system, and it is characterized in that: the diameter of described runner body (1) is 6-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020539719XU CN201808189U (en) | 2010-09-25 | 2010-09-25 | Runner of molding entrance system of one-mould two-hole injection molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020539719XU CN201808189U (en) | 2010-09-25 | 2010-09-25 | Runner of molding entrance system of one-mould two-hole injection molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201808189U true CN201808189U (en) | 2011-04-27 |
Family
ID=43891133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020539719XU Expired - Lifetime CN201808189U (en) | 2010-09-25 | 2010-09-25 | Runner of molding entrance system of one-mould two-hole injection molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201808189U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490316A (en) * | 2011-11-15 | 2012-06-13 | 芜湖顺荣汽车部件股份有限公司 | Fuel tank refill opening plastic mould |
| CN102935698A (en) * | 2012-11-08 | 2013-02-20 | 凡嘉科技（无锡）有限公司 | One-model-dual-cavity runner structure of polystyrene product |
-
2010
- 2010-09-25 CN CN201020539719XU patent/CN201808189U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490316A (en) * | 2011-11-15 | 2012-06-13 | 芜湖顺荣汽车部件股份有限公司 | Fuel tank refill opening plastic mould |
| CN102935698A (en) * | 2012-11-08 | 2013-02-20 | 凡嘉科技（无锡）有限公司 | One-model-dual-cavity runner structure of polystyrene product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI YAHONG MOULDING CO., LTD. Free format text: FORMER NAME: SHANGHAI YAHONG PLASTIC MOULDING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201401, No. 732, Shanghai Hangzhou highway, Shanghai, Fengxian District Patentee after: Shanghai Yahong Moulding Co., Ltd. Address before: Fengxian District Xidu town of Shanghai city in 201401 the Shanghai Hangzhou Highway No. 732 Patentee before: Shanghai Yahong Plastic Moulding Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110427 |
|
| CX01 | Expiry of patent term |