CN206678367U - Hollow plastic pipeline extrudes core rod - Google Patents
Hollow plastic pipeline extrudes core rod Download PDFInfo
- Publication number
- CN206678367U CN206678367U CN201720416624.0U CN201720416624U CN206678367U CN 206678367 U CN206678367 U CN 206678367U CN 201720416624 U CN201720416624 U CN 201720416624U CN 206678367 U CN206678367 U CN 206678367U
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- core rod
- duct
- discharging
- ring
- hollow
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a kind of hollow plastic pipeline in injection molding technology field to extrude core rod.Casting die for plastic hollow pipe, it is characterised in that：Described core rod is hollow tubular structures, one end is charging aperture, the other end is discharging molding port, plastics are melted from core rod charging aperture to enter, by discharging molding port extrusion molding, core rod tube surfaces are provided with ring-type kerve, and heat emission hole is provided with ring-type kerve, core rod discharging molding port end is provided with duct sizing post, and duct sizing band of column shape is arranged on discharging molding port；Described duct sizing post is provided with cooling radiating duct, and radiating duct and the heat emission hole of ring-type kerve connect.The utility model has the advantages that to improve injection productivity ratio, improves the extruded velocity and yield rate of pipeline.
Description
Technical field
It the utility model is related to a kind of hollow plastic pipeline extrusion core rod in injection molding technology field.
Background technology
Hollow tube is the conventional product of building trade, and the production of hollow pipeline is the material by injection mold heated thawing
Material injects die cavity by high pressure, after cooling and solidifying, obtains formed products.This core rod play plastic hollow inner-walls of duct and outer wall it
Between duct styling.The fusion temperature of plastics is typically between 180~210 DEG C, after pipeline extrusion a period of time, due to gold
Category core rod is wrapped between the plastics of melting, and the temperature of core rod can also rise to the temperature same with plastics therewith and distribute not
Go out, cause cooling difficulty at the duct of pipeline, deformation or even burnt.General PVC-U materials are compared due to equilibrium temperature difference
Small, it is very fast to be changed into the speed ratio of solid-state, and problem is not also very big, but for polyolefin based materials such as HDPE or PP, cooling is slow, Gu
The time of change is long, and shaping is just very difficult.This kind of hollow pipeline of domestic production at present, yield rate is less than 60%.
Utility model content
The purpose of this utility model is that hardening time length, difficult forming and yield rate are low in solution hollow tube production process
Deficiency.A kind of injection mold quickly cooled down is provided, improves the extruded velocity and yield rate of pipeline.
The utility model is achieved through the following technical solutions：
A kind of hollow plastic pipeline extrudes core rod, the casting die for plastic hollow pipe, it is characterised in that：Described mould
Core is hollow tubular structures, and one end is charging aperture, and the other end is discharging molding port, and fusing plastics enter from core rod charging aperture, by
Discharge molding port extrusion molding, and core rod tube surfaces are provided with ring-type kerve, is provided with heat emission hole on ring-type kerve, core rod discharge into
Type mouth end is provided with duct sizing post, and duct sizing band of column shape is arranged on discharging molding port；Above-mentioned technical proposal is made further
Explanation：Described duct sizing post is provided with cooling radiating duct, and radiating duct and the heat emission hole of ring-type kerve connect；To upper
Technical scheme is stated to be further described：The inwall of described duct sizing band of column shape arrangement form discharging opening.
The utility model has the characteristics that to improve injection productivity ratio, improves the extruded velocity and yield rate of pipeline.
Brief description of the drawings
Fig. 1 is that hollow plastic pipeline extrudes mold insert structure schematic diagram one.
Fig. 2 is that hollow plastic pipeline extrudes mold insert structure schematic diagram two.
Fig. 3 is hollow tubular structure schematic diagram.
In figure：For charging aperture 1, discharging molding port 2, kerve 3, heat emission hole 4, duct sizing post 5 and radiating duct 6.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：
Hollow plastic pipeline extrusion mold insert structure schematic diagram as shown is, including is charging aperture 1, discharging molding port 2, bottom
Groove 3, heat emission hole 4, duct sizing post 5 and radiating duct 6.
Hollow plastic pipeline extrusion core rod is used to be molded the hollow tube shown in Fig. 3, the extrusion core rod installation of hollow plastic pipeline
In injection mold, core rod plays the styling in duct between plastic hollow inner-walls of duct and outer wall, the fusion temperature of plastics
Typically between 180~210 DEG C, fusing plastics enter from core rod charging aperture, by discharging molding port extrusion molding, pipeline extrusion one
The solidify afterwards shaping of section time, between being wrapped in the plastics of melting due to metal core rod, the temperature of core rod can also rise to therewith
Same temperature and do not distributed not go out with plastics, cause cooling difficulty at the duct of pipeline, deformation or even burnt.Hollow plastic
Radiating duct is set up out on pipeline extrusion core rod, radiating is played a part of in duct one through to the kerve of core rod.Improved mould
Core not only makes the qualification rate of product bring up to 99.6%, and improves the extruded velocity of pipeline, and efficiency improves 20% or so.
Described above is only preferred embodiment of the present utility model, is come for those skilled in the art
Say, on the premise of the utility model technical principle is not departed from, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as the scope of protection of the utility model.
Claims (3)
1. a kind of hollow plastic pipeline extrudes core rod, the casting die for plastic hollow pipe, it is characterised in that：Described core rod
For hollow tubular structures, one end is charging aperture, and the other end is discharging molding port, and fusing plastics enter from core rod charging aperture, by going out
Expect molding port extrusion molding, core rod tube surfaces are provided with ring-type kerve, and heat emission hole, core rod discharging shaping are provided with ring-type kerve
Mouth end is provided with duct sizing post, and duct sizing band of column shape is arranged on discharging molding port.
2. hollow plastic pipeline according to claim 1 extrudes core rod, it is characterised in that：Set on described duct sizing post
There is cooling radiating duct, radiating duct and the heat emission hole of ring-type kerve connect.
3. hollow plastic pipeline according to claim 1 extrudes core rod, it is characterised in that：Described duct sizing band of column shape
The inwall of arrangement form discharging opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720416624.0U CN206678367U (en) | 2017-04-20 | 2017-04-20 | Hollow plastic pipeline extrudes core rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720416624.0U CN206678367U (en) | 2017-04-20 | 2017-04-20 | Hollow plastic pipeline extrudes core rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206678367U true CN206678367U (en) | 2017-11-28 |
Family
ID=60402996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720416624.0U Active CN206678367U (en) | 2017-04-20 | 2017-04-20 | Hollow plastic pipeline extrudes core rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206678367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106965404A (en) * | 2017-04-20 | 2017-07-21 | 上海逸通科技股份有限公司 | Hollow plastic pipeline extrudes core rod |
-
2017
- 2017-04-20 CN CN201720416624.0U patent/CN206678367U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106965404A (en) * | 2017-04-20 | 2017-07-21 | 上海逸通科技股份有限公司 | Hollow plastic pipeline extrudes core rod |
| CN106965404B (en) * | 2017-04-20 | 2023-09-08 | 上海逸通科技股份有限公司 | Hollow plastic pipeline extrusion mould core |
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