CN201863370U - Heat pipe type injection molding screw - Google Patents
Heat pipe type injection molding screw Download PDFInfo
- Publication number
- CN201863370U CN201863370U CN2010206251513U CN201020625151U CN201863370U CN 201863370 U CN201863370 U CN 201863370U CN 2010206251513 U CN2010206251513 U CN 2010206251513U CN 201020625151 U CN201020625151 U CN 201020625151U CN 201863370 U CN201863370 U CN 201863370U
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- CN
- China
- Prior art keywords
- screw
- heat pipe
- injection molding
- groove
- type injection
- 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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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Disclosed is a heat pipe type injection molding screw. Helical fins are arranged on the surface of the screw. The heat pipe type injection molding screw is mainly characterized in that a conical or truncated conical groove coaxial with the screw is arranged in screw, the diameter of the groove is increased gradually from front to back, a sealing cover is arranged at the rear end of the groove, the inside of a formed sealed cavity is evacuated and filled with heat pipe heat transfer media, and an electric heater is arranged in the groove on the back of the sealed cavity. The temperature inside a charging barrel of the screw is easy to control, axial temperature difference is small so that plastic is plasticized well in the charging barrel, plastic degradation is decreased, product quality is stable, product performance is improved, the range of injection molding plastic is widened, the heat pipe type injection molding screw is applicable to heat-sensitive plastic with small viscosity, and a peripheral structure of the screw is simplified while operation is more reliable.
Description
Technical field the utility model relates to a kind of screw rod of injection machine.
The background technology injection moulding is a kind of important method that thermoplastic plastics shaping is made, and screw rod is the vitals of screw injection molding machine, and its main effect is that plastic master batch is carried, compacting, plastified and exert pressure.Existing injection machine brand is a lot, but the basic structure of its injection screw is roughly the same, and a solid metallic rod is promptly arranged, and is provided with helical fin on this metallic rod surface.Existing injection screw is to utilize external heater that screw cylinder is heated basically, for reducing the screw axial temperature difference, usually at outside circulated air or the circulating water device installed of screw cylinder, the shortcoming of this method is that temperature is not easy control in the barrel, axial temperature difference is bigger, also has complex structure in addition, moves insecure shortcoming.
The heat pipe-type injection screw that provides a kind of axial temperature even, simple in structure, reliable is provided the summary of the invention the purpose of this utility model.The utility model mainly is that hot pipe technique is applied on the injection screw.The utility model mainly includes screw rod, adopting heat pipes for heat transfer medium and electric heater.Wherein, the screw rod profile is the same with prior art, promptly be provided with helical fin on the metallic rod surface, but in screw rod, establish the taper or the truncated cone shape groove that increase gradually by diameter behind the forward direction with its coaxial line, preferably taper or truncated cone shape groove are stepped, and the adopting heat pipes for heat transfer medium that is beneficial in the cavity is back to fire end under action of centrifugal force.Seal cover is established in above-mentioned groove rear end, vacuumizes and fill adopting heat pipes for heat transfer working medium in the annular seal space of formation.Electric heater is located in the groove at annular seal space rear portion.
The course of work of the present utility model is: after electric heater was connected power supply, screw rod promptly was heated near an end of electric heater, and the adopting heat pipes for heat transfer medium in the screw rod annular seal space conducts to heat the other end of annular seal space rapidly, and screw rod is heated.When screw rod rotated, the adopting heat pipes for heat transfer medium in the annular seal space was back to fire end under the guide effect of the centrifugal force and the conical surface, so the heat of electric heater output is transferred to each position of screw rod continuously, and basic isothermal.
The utility model compared with prior art has following advantage:
1, easy control of temperature in the screw cylinder, axial temperature difference is little, makes plastics obtain good plasticizing in barrel;
2, reduced plastic degradation, quality of item is stable, and performance improves;
3, enlarged the scope of injection-molded plastic, the thermal sensitivity plastics little to viscosity also are suitable for;
4, not only simplified the screw rod peripheral structure, but operation is more reliable.
Description of drawings
Fig. 1 is that master of the present utility model looks the section simplified schematic diagram.
The specific embodiment is looked in the section simplified schematic diagram the master of heat pipe-type injection screw shown in Figure 1, screw rod 1 profile is provided with helical fin 2 for the metallic rod surface, in screw rod, establish the truncated cone shape groove 3 that increases gradually by diameter behind the forward direction with its coaxial line, and this truncated cone shape groove is stepped.Seal cover 4 is established in above-mentioned groove rear end, vacuumizes and fill adopting heat pipes for heat transfer working medium in the annular seal space of formation.Electric heater 5 is located in the groove at annular seal space rear portion.
Claims (2)
1. heat pipe-type injection screw, the screw rod profile is that the surface is provided with helical fin, it is characterized in that: in screw rod, establish the taper or the truncated cone shape groove that increase gradually by diameter behind the forward direction with its coaxial line, seal cover is established in above-mentioned groove rear end, vacuumize and fill adopting heat pipes for heat transfer working medium in the annular seal space that forms, electric heater is located in the groove at annular seal space rear portion.
2. heat pipe-type injection screw according to claim 1 is characterized in that: screw rod inner conical or truncated cone shape groove are stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206251513U CN201863370U (en) | 2010-11-25 | 2010-11-25 | Heat pipe type injection molding screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206251513U CN201863370U (en) | 2010-11-25 | 2010-11-25 | Heat pipe type injection molding screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201863370U true CN201863370U (en) | 2011-06-15 |
Family
ID=44134536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206251513U Expired - Fee Related CN201863370U (en) | 2010-11-25 | 2010-11-25 | Heat pipe type injection molding screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201863370U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985713A (en) * | 2015-07-28 | 2015-10-21 | 河南省科学院化学研究所有限公司 | Continuous casting epoxy resin composite panel device |
| CN110315715A (en) * | 2018-03-28 | 2019-10-11 | 住友重机械工业株式会社 | Injection (mo(u)lding) machine |
-
2010
- 2010-11-25 CN CN2010206251513U patent/CN201863370U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985713A (en) * | 2015-07-28 | 2015-10-21 | 河南省科学院化学研究所有限公司 | Continuous casting epoxy resin composite panel device |
| CN110315715A (en) * | 2018-03-28 | 2019-10-11 | 住友重机械工业株式会社 | Injection (mo(u)lding) machine |
| CN110315715B (en) * | 2018-03-28 | 2022-08-30 | 住友重机械工业株式会社 | Injection molding machine |
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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: 20110615 Termination date: 20131125 |