CN2801454Y - Sleeve heater for heat flow path spray nozzle and injection moulding machine spray nozzle - Google Patents
Sleeve heater for heat flow path spray nozzle and injection moulding machine spray nozzle Download PDFInfo
- Publication number
- CN2801454Y CN2801454Y CN 200520002502 CN200520002502U CN2801454Y CN 2801454 Y CN2801454 Y CN 2801454Y CN 200520002502 CN200520002502 CN 200520002502 CN 200520002502 U CN200520002502 U CN 200520002502U CN 2801454 Y CN2801454 Y CN 2801454Y
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- Prior art keywords
- sleeve
- heater
- nozzle
- heating wire
- spray nozzle
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- Expired - Fee Related
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a sleeve heater for a hot runner nozzle of an injection molding system and a nozzle of an injection molding machine. The utility model is composed of electric heating wires, filling powder, an outer sleeve and an inner sleeve. The heater forms a clearance fit with a nozzle body in a sliding motion pushed by hands. The utility model has the characteristics of homogeneous heating temperature, high heat transfer efficiency, long service life, high mechanical strength, convenient use and installation, corrosion resistance, beautiful appearance, safety, reliability, etc.
Description
Technical field
The utility model relates to adapted to injection system, and specifically, the utility model relates to a kind of hot-runner nozzle of this type systematic and sleeve heater of injection machine nozzle of being used for.
Background technology
When in hot runner moulding system and injection machine system, handling the thermoplastic polymer resin, adopt heating element heater that nozzle outer surface is heated usually, transmit heat to keep the molten condition of resin in working range, prevent that it from crossing cold or overheated by nozzle wall.Generally adopting sheathed heater at present is the nozzle body heating.But this heater structure has limitation, and its heating element heater only part contacts with sleeve or nozzle body, and major part is in the surrounding air environment, and heat transfer efficiency is lower than 25%, and the empty burning of heater will have a strong impact on the life-span of heating element heater.
The U.S. Pat 5973296 described inventions of Juliano etc. are thick film heaters, this thick film heater places the injection-moulding nozzle matrix surface, comprise dielectric film layer and resistance thick film layers, adopt accurate film print process that this resistance thick film layers is directly fixed on the exterior cylindrical surfaces of injection-moulding nozzle matrix.This method has been used for reference the technology of producing a class thick-film resistor.Although guaranteed the good heat transfer effect, accurate film printing need be used expensive film printing machine, and complex manufacturing, cost are very high, performance difficulty.
Therefore, method adds hot flow path nozzle and injection machine nozzle effectively preferably, improves heat transfer efficiency, guarantees the reliability of nozzle, and this design should be economical rationality, maintenance and repair easily.
The utility model content
Main purpose of the present utility model provides a kind of heater, is used for handling the material of fusion.This device is easily mounted on the outside of hot-runner nozzle or injection machine nozzle, heat transfer efficiency is high and produce in enormous quantities easily, reliable, make and maintenance expense to reduce.
For solving the problems of the technologies described above, sleeve heater of the present utility model, mainly comprise heating wire, outer sleeve, inner sleeves etc. is characterized in that outer sleeve and inner sleeve etc. form the enclosure space of circular cylindricals, and heating wire is wrapped in this space, powder filler is enclosed in around the heating wire, lead-out wire with pass sheath after heating wire is connected and draw.
Sleeve heater of the present utility model also can be installed in thermocouple between outer sleeve and the inner sleeve, and lead-out wire passes sheath with thermocouple and draws after heating wire connects, obtain temperature measurement signal, is used to control nozzle temperature.
Make heating wire and powder filler be compressed in the sleeve pipe closely by technologies such as the draws, its closely knit powder filler can not only increase the heat transfer efficiency of heater, and completely cut off contacting of heating wire and air, and make heating wire at high temperature not oxidized, prolonged the service life of heater.Do not have relative displacement between each parts of heater, also can keep original performance under the vibrations condition, anti-external mechanical damage power is strong.
Sleeve heater of the present utility model and nozzle body slide into the realization matched in clearance by hand push, constitute complete nozzle arrangements; Its heat transfer area is big, and heat transfer efficiency is greater than 50%, and heating-up temperature is even, and when in use being damaged, dismounting is also convenient.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the sleeve heater profile.
Fig. 2 is the sleeve heater of band thermocouple.
Fig. 3 is the hot-runner nozzle of assembling sleeve heater.
1. metal protecting wire nets among the figure, 2. sheath, 3. eduction rod, 4. heating wire, 5. powder filler, 6. metal-coating tube, 7. inner metal sleeve tube, 8. thermocouple.
The specific embodiment
Shown in Figure 1 is the sleeve heater profile, outer sleeve 6 and inner sleeve 7 etc. are formed the enclosure space of a circular cylindrical, heating wire 4 is wrapped in this space, and powder filler 5 is enclosed in around the heating wire 4, lead-out wire 3 with pass outlet sheath 2 after heating wire 4 is connected and metal protecting wire net 1 is drawn.
Fig. 2 is installed in thermocouple 8 between outer sleeve 6 and the inner sleeve 7, and lead-out wire 3 passes outlet sheath 2 with thermocouple 8 after heating wire 4 connects and metal protecting wire net 1 is drawn, and obtains temperature measurement signal, is used to control nozzle temperature.
Fig. 3 is the hot-runner nozzle of assembling sleeve heater, and sleeve heater of the present utility model slides by hand push and nozzle body is realized matched in clearance, constitutes the hot nozzle structure, and heat transfer efficiency has been realized the good heat transfer effect greater than 50%.
Claims (4)
1. the sleeve heater used of hot-runner nozzle and injection machine nozzle, mainly comprise heating wire, outer sleeve, inner sleeve etc., the enclosure space that it is characterized in that circular cylindricals of composition such as outer sleeve (6) and inner sleeve (7), heating wire (4) is wrapped in this space, and powder filler (5) is enclosed in heating wire (4) on every side, lead-out wire (3) with pass sheath (2) after heating wire (4) is connected and draw.
2. sleeve heater as claimed in claim 1 is characterized in that thermocouple (8) to be installed between outer sleeve (6) and the inner sleeve (7), and lead-out wire (3) passes sheath (2) with thermocouple (8) and draws after heating wire (4) connects.
3. as each described sleeve heater in the claim 1 to 2, it is characterized in that described heating wire (4) is wrapped between outer sleeve (6) and the inner sleeve (7).
4. as each described sleeve heater in the claim 1 to 2, it is characterized in that heating wire (4) and powder filler (5) are compressed in the sleeve pipe no relative displacement closely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002502 CN2801454Y (en) | 2005-01-02 | 2005-01-02 | Sleeve heater for heat flow path spray nozzle and injection moulding machine spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520002502 CN2801454Y (en) | 2005-01-02 | 2005-01-02 | Sleeve heater for heat flow path spray nozzle and injection moulding machine spray nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2801454Y true CN2801454Y (en) | 2006-08-02 |
Family
ID=36846160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520002502 Expired - Fee Related CN2801454Y (en) | 2005-01-02 | 2005-01-02 | Sleeve heater for heat flow path spray nozzle and injection moulding machine spray nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2801454Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381875A (en) * | 2018-03-05 | 2018-08-10 | 高立凡 | A kind of Hot runner heater |
-
2005
- 2005-01-02 CN CN 200520002502 patent/CN2801454Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108381875A (en) * | 2018-03-05 | 2018-08-10 | 高立凡 | A kind of Hot runner heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Xiaojing Document name: Notification of Termination of Patent Right |
|
| 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 |