CN2398074Y - Sprue cover of injection mold - Google Patents
Sprue cover of injection mold Download PDFInfo
- Publication number
- CN2398074Y CN2398074Y CN 99240982 CN99240982U CN2398074Y CN 2398074 Y CN2398074 Y CN 2398074Y CN 99240982 CN99240982 CN 99240982 CN 99240982 U CN99240982 U CN 99240982U CN 2398074 Y CN2398074 Y CN 2398074Y
- Authority
- CN
- China
- Prior art keywords
- straight tube
- sprue bush
- injection mold
- cooling
- tube
- 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 - Fee Related
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a sprue bush of an injection mold, belonging to the technical field of plastic forming. The utility model is designed for shortening cooling time, and ensuring that plastic does not break at the middle section of the sprue bush is a straight tube, the inner diameter of which becomes large gradually, and the small opening end of the straight tube is provided with a sinking pit which has the same core as the straight tube. The sprue bush of an injection mold is characterized in that the middle section of the straight tube is provided with a cooling structure which is that a thinner wall is wound by a cooling tube, or a cooling passage arranged inside the thick wall of the straight tube; the cooling passage extends obliquely from the sinking pit end of the sprue bush inside the thick wall of the straight tube to communicate with the middle section of the straight tube.
Description
The utility model belongs to the plastic rubber shaping technical field, refers more particularly to injection mold.
One sprue bush is arranged on the injection mold, and it drains into mold cavity with liquid plastic cement from the injection machine injection port.When die sinking, require the plastic cement in the sprue bush to extract from the minimum place of the diameter of the front end of sprue bush, to guarantee the unimpeded of injection moulding next time together with moulding.Present but (under normal cool time) often has plastic cement to disconnect in the stage casing of sprue bush, stays a joint in sprue bush, influences injection moulding next time even must shut down situation about handling.
The purpose of this utility model provides a kind of sprue bush of injection mold, and under normal cool time, it can guarantee that plastic cement does not disconnect in the stage casing of sprue bush.
The purpose of this utility model is achieved in that
A kind of sprue bush of injection mold is one section straight tube that internal diameter is gradually big, its osculum end have one with the sedimentation nest of straight tube with core, it is characterized in that: the stage casing of this straight tube has cooling structure.
Because " stage casing of this straight tube has cooling structure ", then the plastic rubber material in the section cools off comparatively fast among straight tube, intensity is (the sprue bush front end) height, just can guarantee that plastic cement does not disconnect in the stage casing of sprue bush, has good result of use.
Introduce embodiment of the present utility model below in conjunction with accompanying drawing:
Fig. 1 is the schematic diagram of existing sprue bush.
Fig. 2 is embodiment 1 structural representation of the present utility model.
Fig. 3 is embodiment 2 structural representations of the present utility model.
As shown in Figures 2 and 3, the sprue bush of a kind of injection mold of the utility model is one section straight tube that internal diameter is gradually big, its osculum end have one with the sedimentation nest of straight tube with core, it is characterized in that: the stage casing of this straight tube has cooling structure.
As shown in Figure 2, " cooling structure " of embodiment 1 is the cooling duct that is arranged in the straight tube wall thickness, and this cooling duct is from sagging hole end oblique extension in the straight tube wall thickness of sprue bush, is interconnected to the stage casing of straight tube.
As shown in Figure 3, embodiment 2 " cooling structure " is to twine cooling tube on thin wall thickness.
The winding of cooling tube can be such form: with the cooling tube doubling, water inlet pipe and outlet pipe close up mutually with the form of the parallel spires outside around sprue bush.
As shown in Figure 1-Figure 3, the profile of the sprue bush of injection mold has the step of diameter sudden change.
In above-mentioned cooling duct or the cooling tube, can feed cooling water or cold oil or cold gas.
Claims (4)
1. the sprue bush of an injection mold is one section straight tube that internal diameter is gradually big, its osculum end have one with the sedimentation nest of straight tube with core, it is characterized in that: the stage casing of this straight tube has cooling structure.
2. the sprue bush of injection mold according to claim 1, it is characterized in that: described cooling structure is the cooling duct that is arranged in the straight tube wall thickness, this cooling duct is from sagging hole end oblique extension in the straight tube wall thickness of sprue bush, is interconnected to the stage casing of straight tube.
3. the sprue bush of injection mold according to claim 1 is characterized in that: described cooling structure is to twine cooling tube on thin wall thickness.
4. the sprue bush of injection mold according to claim 3 is characterized in that: cooling tube doubling, water inlet pipe and outlet pipe are closed up mutually with the form of the parallel spires outside around sprue bush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240982 CN2398074Y (en) | 1999-12-09 | 1999-12-09 | Sprue cover of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99240982 CN2398074Y (en) | 1999-12-09 | 1999-12-09 | Sprue cover of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2398074Y true CN2398074Y (en) | 2000-09-27 |
Family
ID=34027925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99240982 Expired - Fee Related CN2398074Y (en) | 1999-12-09 | 1999-12-09 | Sprue cover of injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2398074Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173032A (en) * | 2010-12-30 | 2011-09-07 | 广东邦领塑模实业有限公司 | Injection mould and manufacturing method thereof |
| CN102773974A (en) * | 2012-08-06 | 2012-11-14 | 昆山市浩坤机械有限公司 | Television side cover plastic mould hot runner system |
| CN103895186A (en) * | 2014-04-15 | 2014-07-02 | 昆山市大久电子有限公司 | Two-pipe type water-cooling and anti-drawing sprue bush |
| CN104626472A (en) * | 2015-01-23 | 2015-05-20 | 苏州市职业大学 | Sprue bush |
-
1999
- 1999-12-09 CN CN 99240982 patent/CN2398074Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173032A (en) * | 2010-12-30 | 2011-09-07 | 广东邦领塑模实业有限公司 | Injection mould and manufacturing method thereof |
| CN102773974A (en) * | 2012-08-06 | 2012-11-14 | 昆山市浩坤机械有限公司 | Television side cover plastic mould hot runner system |
| CN103895186A (en) * | 2014-04-15 | 2014-07-02 | 昆山市大久电子有限公司 | Two-pipe type water-cooling and anti-drawing sprue bush |
| CN103895186B (en) * | 2014-04-15 | 2016-08-17 | 昆山一邦泰汽车零部件制造有限公司 | Double hose water-cooled anti-wire drawing sprue bush |
| CN104626472A (en) * | 2015-01-23 | 2015-05-20 | 苏州市职业大学 | Sprue bush |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |