CN202572857U - Injection mold with fan gate - Google Patents
Injection mold with fan gate Download PDFInfo
- Publication number
- CN202572857U CN202572857U CN 201220144527 CN201220144527U CN202572857U CN 202572857 U CN202572857 U CN 202572857U CN 201220144527 CN201220144527 CN 201220144527 CN 201220144527 U CN201220144527 U CN 201220144527U CN 202572857 U CN202572857 U CN 202572857U
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- port
- fan gate
- gate
- fan
- runner
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- Expired - Fee Related
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model belongs to the technical field of molds, and specifically relates to an injection mold with a fan gate. The injection mold comprises a fixed die bed-plate, a fixed die insert and a movable die insert, wherein the movable die insert is matched with the fixed die insert, and after the fixed die insert and the movable die insert is subjected to die closing, a cavity is formed; the fixed die bed-plate is provided with a runner, the tail end of the runner is connected with a fan gate, and communicated with the cavity through the gate; the fan gate is fan-shaped, and comprises a first port and a second port, wherein the first port is connected with the runner, the second port is connected with the cavity, and the aperture of the first port is less than that of the second port, thereby ensuring that when plastic melts pass through the fan gate and then enter into the cavity, an acceleration is generated, and the whole cavity is filled quickly; and along the direction that the first port of the fan gate points to the second port, the thickness of the gate is gradually thinned, thereby facilitating the flowing of plastic melts, and reducing the stress concentration at the gate.
Description
Technical field
The utility model belongs to technical field of mold, is specifically related to a kind of injection mold with fan gate.
Background technology
Cast gate, the feeding-passage as connecting runner and die cavity has following two aspect effects: one of which flows into die cavity to plastic melt and plays control action; Its two, after injection pressure is cancelled, block die cavity, make that the plastics of uncolled curing still can not flow backwards in the die cavity.The design of cast gate and position are selected, and are directly connected to plastic and whether can accomplish injection moulding by high-quality.
At present, cast gate commonly used is a drop gate in the injection mold.Characteristics such as plastic melt directly gets into die cavity by the big end of sprue, thereby it is little to have flow resistance, and the flow process that flows weak point and pipeline time are long.Yet, adopt down gate after, cast gate charging place can produce bigger residual stress and cause the plastic buckling deformation, the gate vestiges difficult treatment influences the outward appearance of goods.Particularly, higher to surperficial quality requirement for the transparent article of PMMA (polymethyl acrylate is commonly called as lucite) material; Adopt common drop gate narrow and small because of the cast gate width; Be prone to produce bubble and current mark, cast gate place vestige is obvious, is difficult to meet the demands.
The utility model content
The utility model provides a kind of injection mold, can effectively avoid surface, cast gate place the material trace to occur, guaranteed the presentation quality of goods with fan gate.
To achieve these goals, the utility model is taked following technical scheme:
Injection mold with fan gate comprises top clamping plate, cover half mold insert and the dynamic model mold insert that cooperates with the cover half mold insert, wherein, forms die cavity behind cover half mold insert and the dynamic model mold insert matched moulds; Top clamping plate offers feeding-passage, and said feeding-passage comprises runner, and flow field end is connected with the fan gate that connects with die cavity, fan gate horizontally set.
As the advantageous embodiment of the utility model, said fan gate is fan shape.
As the advantageous embodiment of the utility model, it is terminal that a plurality of runners that said runner comprises sprue and is communicated with sprue, above-mentioned fan gate are connected each runner.
As the advantageous embodiment of the utility model, said fan gate comprises first port that is connected with runner and second port that is connected with die cavity, and wherein, the first port bore is less than the second port bore.
As the advantageous embodiment of the utility model, the said first port thickness is greater than the second port thickness.
The beneficial effect of the utility model is: plastic melt gets into die cavity through a fan gate that launches gradually in the utility model; This fan gate horizontally set; Make that melt obtains distributing more uniformly in runner, reduced the internal stress of goods, reduce product deformation; Because melt lateral dispersion behind runner gets into die cavity, makes flow liner and directionality effect reduce, and has avoided sneaking into of air simultaneously, makes the even flowing forming of plastics, guarantees good quality of item; First port of fan gate points to second port direction, and flowing of plastic melt is convenient in the attenuation gradually of cast gate thickness, reduces the stress at cast gate place and concentrates; Plastic melt produces acceleration when getting into die cavity through fan gate, fill up whole die cavity rapidly.
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further specified:
Description of drawings
Fig. 1 is for having the structural representation of the injection mold of fan gate in the utility model;
Fig. 2 is the A portion enlarged drawing of Fig. 1, and the sketch map of fan gate has been shown among the figure;
Wherein, 1-top clamping plate, 2-cover half mold insert, 3-dynamic model mold insert, 4-die cavity, 5-feeding-passage, 6-runner, 60-runner, 7-fan gate.
The specific embodiment
In conjunction with Fig. 1, Fig. 2, have the injection mold of fan gate, comprise top clamping plate 1, cover half mold insert 2 and the dynamic model mold insert 3 that cooperates with cover half mold insert 2, form die cavity 4 behind cover half mold insert 2 and dynamic model mold insert 3 matched moulds; Top clamping plate 1 offers feeding-passage 5, and feeding-passage 5 comprises runner 6, connects through fan gate 7 between runner 6 and the die cavity 4; Wherein, Fan gate 7 horizontally sets, and be connected runner 6 ends, make the injection moulding melt in runner 6, obtain distributing more uniformly; Reduce the internal stress of goods, reduced product deformation; Preferably, said runner 6 can be a sprue, or a plurality of runners 60 that separated by sprue, and it is terminal that fan gate 7 is connected each runner.
Said fan gate 7 is fan shape, comprises first port that is connected with runner, and second port that is connected with die cavity; Wherein, The first port bore guarantees can produce acceleration when plastic melt gets into die cavity 4 through fan gate 7 less than the second port bore, fills up whole die cavity 4 rapidly.
The first port thickness of fan gate 7 is greater than the second port thickness; And point to the direction of second port, i.e. injection moulding melt flows direction, the attenuation gradually of fan gate 7 thickness along fan gate 7 first ports; Be convenient to flowing of plastic melt, reduce the stress at cast gate place and concentrate.
Certainly, above-mentioned explanation is not to be the restriction to the utility model, the utility model also be not limited in above-mentioned for example, the variation that the technical staff in present technique field is made in the essential scope of the utility model also should belong to the protection domain of the utility model.
Claims (5)
1. the injection mold that has fan gate comprises top clamping plate, cover half mold insert and the dynamic model mold insert that cooperates with the cover half mold insert, wherein, forms die cavity behind cover half mold insert and the dynamic model mold insert matched moulds; Top clamping plate offers feeding-passage, it is characterized in that: said feeding-passage comprises runner, and flow field end is connected with the fan gate that connects with die cavity, fan gate horizontally set.
2. the injection mold with fan gate according to claim 1 is characterized in that: said fan gate is fan shape.
3. the injection mold with fan gate according to claim 1 is characterized in that: it is terminal that a plurality of runners that said runner comprises sprue and is communicated with sprue, above-mentioned fan gate are connected each runner.
4. the injection mold with fan gate according to claim 1 is characterized in that: said fan gate comprises first port that is connected with runner and second port that is connected with die cavity, and wherein, the first port bore is less than the second port bore.
5. the injection mold with fan gate according to claim 4 is characterized in that: the said first port thickness is greater than the second port thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220144527 CN202572857U (en) | 2012-04-09 | 2012-04-09 | Injection mold with fan gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220144527 CN202572857U (en) | 2012-04-09 | 2012-04-09 | Injection mold with fan gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202572857U true CN202572857U (en) | 2012-12-05 |
Family
ID=47242306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220144527 Expired - Fee Related CN202572857U (en) | 2012-04-09 | 2012-04-09 | Injection mold with fan gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202572857U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458381A (en) * | 2014-12-17 | 2015-03-25 | 苏州禾昌聚合材料股份有限公司 | Sample-band mold for testing modified plastics |
| CN109648683A (en) * | 2017-10-11 | 2019-04-19 | 蓝思科技（长沙）有限公司 | A kind of ceramic injection forming mold and method |
| CN111872349A (en) * | 2020-07-09 | 2020-11-03 | 金榀精密工业(苏州)有限公司 | Semi-solid forming system based on fan-shaped efficient runner |
-
2012
- 2012-04-09 CN CN 201220144527 patent/CN202572857U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104458381A (en) * | 2014-12-17 | 2015-03-25 | 苏州禾昌聚合材料股份有限公司 | Sample-band mold for testing modified plastics |
| CN109648683A (en) * | 2017-10-11 | 2019-04-19 | 蓝思科技（长沙）有限公司 | A kind of ceramic injection forming mold and method |
| CN111872349A (en) * | 2020-07-09 | 2020-11-03 | 金榀精密工业(苏州)有限公司 | Semi-solid forming system based on fan-shaped efficient runner |
| CN111872349B (en) * | 2020-07-09 | 2021-10-22 | 金榀精密工业(苏州)有限公司 | Semi-solid forming system based on fan-shaped efficient runner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20140409 |