CN202826354U - Extrusion mold using heat pipe for heating - Google Patents
Extrusion mold using heat pipe for heating Download PDFInfo
- Publication number
- CN202826354U CN202826354U CN2012205759397U CN201220575939U CN202826354U CN 202826354 U CN202826354 U CN 202826354U CN 2012205759397 U CN2012205759397 U CN 2012205759397U CN 201220575939 U CN201220575939 U CN 201220575939U CN 202826354 U CN202826354 U CN 202826354U
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- CN
- China
- Prior art keywords
- heating
- spreader
- heat pipe
- section
- plug
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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 - Fee Related
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses an extrusion mold using a heat pipe for heating. The extrusion mold comprises a mold base and a neck mold which are mutually connected, wherein the mold base is provided with a material cavity, a core rod is arranged in the material cavity, one end of the core rod, which is arranged in the mold base, is in but joint with a sprue spreader, the sprue spreader is fixed in the material cavity through a sprue spreader support, a feeding part corresponding to the top end of the sprue spreader is formed in the mold base, heating cavities which are mutually communicated are formed in the core rod and the sprue spreader, heating pipes are arranged in the heating cavities, one ends of the heating pipes are heating sections, the other ends of the heating pipes are cooling sections, and heating elements are arranged outside the heating sections. The extrusion mold has the advantages that the core rod can be heated to a required temperature in shorter time, thus the turn-on time is greatly shortened, the uniformity of integral temperature of the core rod is maintained, the stability of flowing of plastic melted gel inside the extrusion mold is ensured, and inner surfaces of manufactured plastic tubular products are smooth.
Description
Technical field
The utility model relates to the plastics forming field, is specifically related to a kind of extrusion die that utilizes the heat pipe heating.
Background technology
The continuous extrusion process of plastic pipe be generally be in the viscosity flow state plastics under HTHP through having the mouth mould of specific sectional shape, then cooling and shaping at a lower temperature.
The continuous extrusion processing mold of plastic pipe, comprise and interconnecting and the die holder in interior band material chamber and a mouthful mould, the material chamber is built-in with plug, this plug is in the interior end of die holder to being connected to spreader, spreader is fixed on the inwall of expecting the chamber by the spreader support, has the charging aperture corresponding with the spreader top on the die holder.
Generally, the plug of the continuous extrusion processing mold of the plastic pipe mainly mode such as the convection current by the heat conduction of small bore syndeton, internal cavities Air and heat radiation conducts heat, this has caused the deficiency of two aspects: the one, and plug is longer preheating time during start, needed three hours even the longer time, greatly reduce operating efficiency; The 2nd, low, the skewness of plug temperature, the melten gel flowing instability makes the plastic pipe inner surface wrinkling easily.
Application number is that 97206765.5 utility model discloses the direct pre-warmed plastics extrusion die of a kind of plug "; comprise external mold, adpting flange, the heater of settling in the adpting flange outside; the core that arranges at external mold inside, and the template of installing in external mold and core outer end.Be provided with the preheating cavity that can fill heater in the core, in the preheating cavity external port with in the template outer end of core position end cap be housed, temperature tube is housed in preheating cavity.
This utility model can shorten the preheating time of plug, enhances productivity, but adopts the electric heater heating, requires to have higher heating power, and electric heater heat output in the longitudinal direction is inhomogeneous, poor temperature uniformity.
Therefore, need to provide a kind of extrusion die, can directly heat plug, shorten the available machine time, and can guarantee that the bulk temperature of plug is even.
The utility model content
The utility model provides a kind of extrusion die that utilizes the heat pipe heating, plug can be heated to needed temperature within a short period of time, greatly shortened the available machine time, and the bulk temperature of keeping plug is even, guarantee the stationarity that the inner molten plastic of extrusion die flows, the plastic pipe inner surface that manufacturing is obtained is smooth.
A kind of extrusion die that utilizes the heat pipe heating, comprise and interconnecting and the die holder in interior band material chamber and a mouthful mould, described material chamber is built-in with plug, this plug is in the interior end of die holder to being connected to spreader, described spreader is fixed on the inside in material chamber by the spreader support, have the charging aperture corresponding with the spreader top on the described die holder, the inside of described plug and spreader is provided with the heating chamber that is interconnected, be provided with heat pipe in the described heating chamber, one end of this heat pipe is bringing-up section, the other end is cooling section, and the outside of described bringing-up section is provided with heating element heater.
Generally, heat pipe is made of shell, liquid-sucking core and end cap, and shell inside is filled with hydraulic fluid after being pumped into negative pressure, makes in the liquid-sucking core of being close to inner wall of tube shell to be full of hydraulic fluid, is then sealed with end cap.
One end of heat pipe is bringing-up section, the other end is cooling section, the bringing-up section of heating element heater opposite heat tube heats, and the working media that shell and the liquid-sucking core of heat by heat pipe is passed to inside heat pipe is after the working media evaporation, steam flows to the cooling section of the other end under small differential pressure action, condense into liquid, emit heat, liquid relies on capillarity to flow back to bringing-up section along liquid-sucking core again, so circulation is passed to cooling section with heat from the bringing-up section of heat pipe.
Utilize heat pipe that plug is heated, can shorten heat time heating time, improve the efficiency of heating surface, simultaneously, can powered-down when normally producing, heat pipe is regulated the plug temperature automatically as temperature balancer, keeps plug vertically and the uniformity of radial temperature.
As preferably, the cooling section of described heat pipe is in plug one end, and the bringing-up section of described heat pipe is in an end of spreader.
The bringing-up section of described heat pipe is in an end of spreader, by heating element heater bringing-up section is heated, and heat is passed to the cooling section that is in plug inside.The end that bringing-up section is in spreader can make things convenient for the setting of heating element heater.
As preferably, described heating element heater is around the home at the heating wire of bringing-up section outside, and this heating wire is connected with the power supply that is in the die holder outside by the wire that runs through the spreader support.
Described heating element heater also can be other forms, as long as heat can be provided, by heating wire bringing-up section is heated, and is convenient to implement.
As preferably, described spreader support is three～six feets around the circumferential distribution of spreader.
Described spreader support is used for the location spreader in the position of die holder, and feet can provide stable supporting role, simultaneously, avoids the spreader support that molten plastic is flowed to form as far as possible and disturbs the plastic pipe rough surface that causes extrusion molding to obtain.
As preferably, described feet is around the circumferential even distribution of spreader.
When equally distributed feet can make molten plastic flow through the spreader support, the shear action that is subject in same cross section was even, avoided flowing of molten plastic not steady.
In order to make feet minimum to the interference of molten plastic, preferably, described feet has the cross section of rhombus.During molten plastic contact feet, by point and face, reduce the impulsive force to molten plastic, make flowing steadily of molten plastic.
Because plug extends to the discharge end of mouthful mould by spreader, in order to guarantee the temperature homogeneous heating of plug, preferably, described heat pipe is extended to the discharge end of mouthful mould by the spreader middle part.
The utility model utilizes the extrusion die of heat pipe heating, plug can be heated to needed temperature within a short period of time, greatly shortened the available machine time, simultaneously, the temperature of plug accurately can be maintained within a certain range, guarantee the stationarity that the inner molten plastic of extrusion die flows, plastic tube embryo inner surface behind sizing that manufacturing is obtained is smooth, good mechanical property, resistance to water-flow is little.
Description of drawings
Fig. 1 is a kind of cut-away view that utilizes the extrusion die of heat pipe heating of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of extrusion die of heat pipe heating that utilizes of the utility model is described in detail.
As shown in Figure 1, a kind of extrusion die that utilizes the heat pipe heating, comprise and interconnecting and die holder 9 and mouthful mould 2 in interior band material chamber, the material chamber is built-in with plug 3, this plug 3 is in a end in the die holder 9 to being connected to spreader 8, spreader 8 is fixed on the inwall in material chamber by the spreader support, have the charging aperture corresponding with spreader 8 tops on the die holder 9, plug 3 is provided with the heating chamber that is interconnected with the inside of spreader 8, be provided with heat pipe in the heating chamber, one end of this heat pipe is bringing-up section 1, and the other end is cooling section 4, and the outside of bringing-up section 1 is provided with heating element heater.
With heat pipe plug 3 is heated, can shorten heat time heating time, improve the efficiency of heating surface, simultaneously, can keep the homogeneity of plug 3 temperature.
Because plug 3 extends to the discharge end of mouthful mould 2 by spreader 8, heat pipe is also extended to the discharge end of mouthful mould 2 by spreader 8 middle parts, guarantees the temperature homogeneous heating of plug 3.
The cooling section 4 of heat pipe is in plug 3 inside, and the bringing-up section 1 of heat pipe is in the inside of spreader 8.Heating element heater is around the home at the heating wire of bringing-up section 1 outside, and this heating wire is connected with the power supply 5 that is in die holder 9 outsides by the wire 6 that runs through the spreader support.
The spreader support is that 7, three feets 7 of three feets around spreader 8 circumferential distributions are around spreader 8 circumferential even distributions.
Equally distributed three feets 7 can provide stable supporting role, simultaneously, avoid the spreader support that molten plastic is flowed to form as far as possible and disturb, and make molten plastic flow steadily the plastic pipe smooth surface that extrusion molding obtains.
Feet 7 has the cross section of rhombus.The cross section of rhombus can farthest reduce the impulsive force to molten plastic, makes flowing steadily of molten plastic.
When a kind of extrusion die that utilizes heat pipe to heat of the utility model used, the bringing-up section 1 of opening the heating element heater opposite heat tube heated, and heat is passed to cooling section 4 from the bringing-up section 1 of heat pipe, and heat is passed to plug 3 from heat pipe, and plug 3 is heated uniformly.
Claims (6)
1. extrusion die that utilizes heat pipe heating, comprise and interconnecting and the die holder in interior band material chamber and a mouthful mould, described material chamber is built-in with plug, this plug is in the interior end of die holder to being connected to spreader, described spreader is fixed on the inside in material chamber by the spreader support, have the charging aperture corresponding with the spreader top on the described die holder, the inside of described plug and spreader is provided with the heating chamber that is interconnected, it is characterized in that, be provided with heat pipe in the described heating chamber, one end of this heat pipe is bringing-up section, and the other end is cooling section, and the outside of described bringing-up section is provided with heating element heater.
2. the extrusion die that utilizes the heat pipe heating as claimed in claim 1 is characterized in that the cooling section of described heat pipe is in an end of plug, and the bringing-up section of described heat pipe is in an end of spreader.
3. the extrusion die that utilizes heat pipe heating as claimed in claim 2 is characterized in that, described heating element heater is around the home at the heating wire of bringing-up section outside, and this heating wire is connected with the power supply that is in the die holder outside by the wire that runs through the spreader support.
4. such as the arbitrary described extrusion die that utilizes the heat pipe heating of claim 1～3, it is characterized in that described spreader support is three～six feets around the circumferential distribution of spreader.
5. the extrusion die that utilizes the heat pipe heating as claimed in claim 4 is characterized in that described feet is around the circumferential even distribution of spreader.
6. the extrusion die that utilizes the heat pipe heating as claimed in claim 5 is characterized in that described feet has the cross section of rhombus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205759397U CN202826354U (en) | 2012-11-02 | 2012-11-02 | Extrusion mold using heat pipe for heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205759397U CN202826354U (en) | 2012-11-02 | 2012-11-02 | Extrusion mold using heat pipe for heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202826354U true CN202826354U (en) | 2013-03-27 |
Family
ID=47938140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205759397U Expired - Fee Related CN202826354U (en) | 2012-11-02 | 2012-11-02 | Extrusion mold using heat pipe for heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202826354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641794A (en) * | 2016-03-02 | 2016-06-08 | 广州佳林医疗科技有限公司 | Cross-shaped drainage pipe and mold and machining method for forming drainage pipe once |
| CN114148025A (en) * | 2021-12-15 | 2022-03-08 | 沁海(上海)食品有限公司 | Extrusion device and food extruder |
-
2012
- 2012-11-02 CN CN2012205759397U patent/CN202826354U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641794A (en) * | 2016-03-02 | 2016-06-08 | 广州佳林医疗科技有限公司 | Cross-shaped drainage pipe and mold and machining method for forming drainage pipe once |
| CN114148025A (en) * | 2021-12-15 | 2022-03-08 | 沁海(上海)食品有限公司 | Extrusion device and food extruder |
| CN114148025B (en) * | 2021-12-15 | 2024-10-25 | 沁海(北京)食品有限公司 | Extrusion device and food extruder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20181102 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |