CN2931070Y - Valve needle device of heat flow passage die - Google Patents
Valve needle device of heat flow passage die Download PDFInfo
- Publication number
- CN2931070Y CN2931070Y CN 200620062174 CN200620062174U CN2931070Y CN 2931070 Y CN2931070 Y CN 2931070Y CN 200620062174 CN200620062174 CN 200620062174 CN 200620062174 U CN200620062174 U CN 200620062174U CN 2931070 Y CN2931070 Y CN 2931070Y
- Authority
- CN
- China
- Prior art keywords
- valve needle
- needle
- distribution plate
- flow distribution
- code mask
- Prior art date
- 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 mechanical equipment technical field, in particular to a valve needle device of a hot runner mold. The valve needle device is arranged at the top of the hot sprue, which comprises a valve needle and a valve needle sleeve. The valve needle passes the valve needle sleeve and a diversion board and extends into the hot sprue runner. The valve needle used for blocking the outlet of the runner is linked with a cylinder. The valve needle sleeve is fixed on the diversion board and is arranged inside the gap between the diversion board and a stationary mold used for mounting the cylinder. A heat-insulated medium is arranged between the diversion board and the stationary mold. the valve needle sleeve in the valve needle device of the utility model is directly fixed on the diversion board and does not contact with the stationary mold, thereby avoiding the heating being transferred onto the stationary mold via the valve needle sleeve and maintaining the temperatures of the stationary mold and related molds within a lower range, which can not only reduce the loss of heating but also reducing plastic leakage.
Description
Technical field:
The utility model relates to mechanical equipment technical field, refers in particular to a kind of needle device of hot runner mould.
Background technology:
Hot runner mould is a kind of injection molding mould at present commonly used, and it is with respect to the mould of cold runner structure, has to economize in raw materials, and can enhance productivity, and improves product quality, simplifies plurality of advantages such as product subsequent handling.Though hot runner mould has above-mentioned plurality of advantages, also there is certain deficiency in it.See Fig. 1, this is present a needle valve type hot runner mould, is arranged with a needle cover 02 on needle 01, and it is stable that this needle cover 02 can guarantee that needle 01 moves up and down, guarantees that simultaneously the plastic material in the runner can glue not occur leaking with needle 01 motion.But needle cover 02 is fixed between code mask 4 and the flow distribution plate 3 in this needle valve type hot runner mould, and needle cover 02 forms secure fit by the thrust between code mask 4 and the flow distribution plate 3.Under this structure, needle cover 02 inevitably contacts with code mask 4 with flow distribution plate 3 simultaneously.Usually, by the temperature of temperature sensing device control flow distribution plate 3, make its temperature keep certain numerical value in the hot runner mould, remain on the state of fusion to make plastic material in it.But, because needle cover 02 contacts with code mask 4, it will play the effect of heat conduction, be that heat on the flow distribution plate 3 can be constantly be delivered to code mask 4 by needle cover 02, and flow distribution plate 3 is in order to keep the constant temperature of self, just need constantly heat, the temperature of the mould of contact improves constantly thereby cause needle cover 02, code mask 4 to reach with it.And drive and the needle cover 02 of needle 01 by cylinder 03 constantly does relative motion, if temperature is too high, the thermal expansion degree strengthens, and the probability that will cause leaking glue increases, and causes 02 fracture of needle cover easily.
The utility model content:
Technical problem to be solved in the utility model overcomes the shortcoming of present product exactly, provide a kind of temperature of guaranteeing flow distribution plate can not conduct to code mask and cause loss, the needle device of the hot runner mould that effectively anti-simultaneously leak-stopping glue situation takes place by the needle cover.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme: this needle device is positioned at Re Zui top, it comprises: needle and needle cover, wherein needle passes the needle cover, flow distribution plate stretches in the runner of hot mouth, this is used to stop up the needle and the cylinder interlock of runner exit, the needle cover is fixed on the flow distribution plate, and it is at flow distribution plate be used to install in the space between the code mask of cylinder, and is provided with heat insulation medium between flow distribution plate and code mask.
Be formed with the space between above-mentioned needle set upper side and the code mask, promptly the upper end of valve pillowcase does not contact code mask.
Described needle cover comprises: body, briquetting and screw, and wherein stretching out outside the body is formed with flange, and briquetting is fixedly connected on the flow distribution plate by screw, and the protuberance that forms on the briquetting is pressed in the flange on the body.
Needle cover in the utility model needle device directly is fixed on the flow distribution plate, do not contact with code mask, so just avoided heat to conduct on the code mask by the needle cover, so make the temperature of code mask and related die be in the lower scope, not only can reduce the loss of heat, can reduce the generation of leaking the glue situation simultaneously.
Description of drawings:
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the internal structure cutaway view of existing product;
Fig. 2 is an internal structure cutaway view of the present utility model.
The specific embodiment:
See Fig. 2, this hot runner mould comprises: needle device 1, hot mouth 2, flow distribution plate 3 and code mask 4.Wherein hot mouth 2 and flow distribution plate 3 relative fixed, and the runner in the flow distribution plate 3 is communicated with runner 20 in the hot mouth 2, and the raw material of fusion enters in the hot mouth 2 by flow distribution plate 3 after heating.
Described needle device 1 is positioned at hot mouth 2 tops, it comprises: needle 11 and needle cover 12, wherein needle 11 passes needle cover 12, flow distribution plate 3 stretches in the runner 20 of hot mouth 2, this is used to stop up the needle 11 and cylinder 13 interlocks of runner 20 outlets, and promptly needle 11 is realized moving up and down by the drive of cylinder 13.Needle cover 12 is fixed on the flow distribution plate 2, and it is at flow distribution plate 2 and be used to install in the space between the code mask 4 of cylinder 13, and needle overlaps 12 tops and do not contact with code mask.In addition, the gap between code mask 4 and flow distribution plate 3 is provided with heat insulation medium 5, these heat insulation medium 5 its supporting roles, and in order to prevent the heat conduction, it adopts hot bad conductive material to make simultaneously.
Particularly, needle cover 12 comprises: body 121, briquetting 122 and screw 123, wherein stretch out on the body 121 and be formed with flange 1211, briquetting 122 is fixedly connected on the flow distribution plate 3 by screw 123, and the protuberance 1221 that forms on the briquetting 122 is pressed in the flange 1211 on the body 121.Like this, by briquetting 122 needle cover 12 is fixed on the flow distribution plate 3.
During the utility model work, drive needle 11 by cylinder 13 and move up and down.When needle 11 moves down, the outlet that needle 1 will this hot mouth 2 is stopped up, and raw material can't continue to flow out, and when needle 11 moves up, its end leaves the outlet of hot mouth 2, and raw material is continued outflow.Needle cover 12 in the utility model needle device directly is fixed on the flow distribution plate 3, do not contact with code mask 4, so just avoided heat to conduct on the code mask 4 by needle cover 12, so make the temperature of code mask 4 and related die be in the lower scope, to reduce the loss of heat, reduce the generation of leaking the glue situation simultaneously.
Certainly, the above only is example of the utility model, be not to limit the utility model practical range, all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model claim.
Claims (3)
1, the needle device of hot runner mould, this needle device (1) is positioned at hot mouth (2) top, it comprises: needle (11) and needle cover (12), wherein needle (11) passes needle cover (12), flow distribution plate (3) stretches in the runner (20) of hot mouth (2), this is used to stop up the needle (11) and cylinder (13) interlock of runner (20) outlet, it is characterized in that: described needle cover (12) is fixed on the flow distribution plate (3), and it is positioned at flow distribution plate (3) and is used to install space between the code mask (4) of cylinder (13), and is provided with heat insulation medium (5) between flow distribution plate (2) and code mask (4).
2, the needle device of hot runner mould according to claim 1 is characterized in that: be formed with the space between described needle cover (12) upper end and the code mask (4), promptly the upper end of valve pillowcase (12) does not contact code mask (4).
3, the needle device of hot runner mould according to claim 1, it is characterized in that: described needle cover (12) comprising: body (121), briquetting (122) and screw (123), wherein stretch out outside the body (121) and be formed with flange (1211), briquetting (122) is fixedly connected on the flow distribution plate (3) by screw (123), and the last protuberance (1221) that forms of briquetting (122) is pressed in the flange (1211) on the body (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062174 CN2931070Y (en) | 2006-07-28 | 2006-07-28 | Valve needle device of heat flow passage die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062174 CN2931070Y (en) | 2006-07-28 | 2006-07-28 | Valve needle device of heat flow passage die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2931070Y true CN2931070Y (en) | 2007-08-08 |
Family
ID=38347570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620062174 Expired - Lifetime CN2931070Y (en) | 2006-07-28 | 2006-07-28 | Valve needle device of heat flow passage die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2931070Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426800A (en) * | 2016-09-23 | 2017-02-22 | 东莞市热恒注塑科技有限公司 | Large hot runner system without interfering system operation after glue leakage |
| CN108381879A (en) * | 2017-09-26 | 2018-08-10 | 蒋米娜 | The hot runner system of universal adjustment needle |
-
2006
- 2006-07-28 CN CN 200620062174 patent/CN2931070Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426800A (en) * | 2016-09-23 | 2017-02-22 | 东莞市热恒注塑科技有限公司 | Large hot runner system without interfering system operation after glue leakage |
| CN106426800B (en) * | 2016-09-23 | 2019-05-24 | 东莞市热恒注塑科技有限公司 | A kind of leak adhesive large-scale hot runner system that interference system is not run |
| CN108381879A (en) * | 2017-09-26 | 2018-08-10 | 蒋米娜 | The hot runner system of universal adjustment needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070808 |
|
| EXPY | Termination of patent right or utility model |