CN202615939U - A control device for preheating an outer mould of a cable extruder - Google Patents
A control device for preheating an outer mould of a cable extruder Download PDFInfo
- Publication number
- CN202615939U CN202615939U CN 201220222624 CN201220222624U CN202615939U CN 202615939 U CN202615939 U CN 202615939U CN 201220222624 CN201220222624 CN 201220222624 CN 201220222624 U CN201220222624 U CN 201220222624U CN 202615939 U CN202615939 U CN 202615939U
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- CN
- China
- Prior art keywords
- extruder
- field generator
- control device
- magnetic
- outer mould
- 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 - Lifetime
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Abstract
The utility model relates to a control device for preheating an outer mould of a cable extruder. The control device comprises an extruder outer mould opening, a high-frequency eddy magnetic field generator, and an adjustable support. The high-frequency eddy magnetic field generator is fixed on the adjustable support which is arranged at one side of the extruder outer mould opening. The inner hole of the extruder outer mould opening and the inner hole of the high-frequency eddy magnetic field generator are homocentric. The high-frequency eddy magnetic field generator is formed by an annular ceramic inner insulator, an annular ceramic outer insulator, and a high-temperature-resistant and insulated heating coil arranged between the two insulators. The control device has the beneficial effects of simple structure, ingenious design, low heat loss, no need in direct heating, no need of heat preservation, and great energy conservation, and prevents the device or a product from electrification hazard after the device is damaged.
Description
Technical field
The utility model relates to a kind of servicing unit of electric wire extruder, the control device of particularly a kind of cable extruder external mold preheating.
Background technology
Improve constantly along with what continuous expansion in the field of electric wire function carrying and serviceability required; Production and processing technology to electric wire require accurate day by day; Particularly the service cable of some high pressure, high frequency and electric terminal is had higher requirement to the surperficial glossiness of cable cover(ing), density, the uniformity, aesthetics etc. in process of production.Therefore the electric wire production field be badly in need of a kind of stable, reliably, accurate die orifice temperature control equipment outside controlled, the simple and practical cable machinery.The built-in plug-in type resistance rod of domestic main use at present mode of heating, this mode temperature is unstable, and not foot phenomenon of the too high or local temperature of local temperature rise very easily appears in the skewness of heating, and has influenced the presentation quality and the overall performance of cable cover(ing) greatly.
Summary of the invention
In view of the deficiency that prior art exists, the utility model provides the control device of a kind of cable extruder external mold preheating, and this device heating-up temperature is stablized, heating is evenly distributed, and has improved the presentation quality and the overall performance of cable cover(ing) greatly.
The utility model is for realizing above-mentioned purpose; The technical scheme that is adopted is: the control device of a kind of cable extruder external mold preheating; Comprise the outer die orifice of extruder, it is characterized in that: also comprise high-frequency vortex field generator for magnetic, adjustable support, said high-frequency vortex field generator for magnetic is fixed on adjustable support; Said adjustable support is arranged on outer die orifice one side of extruder, and the endoporus of the outer die orifice of extruder is concentric with the endoporus of high-frequency vortex field generator for magnetic; The high-frequency vortex field generator for magnetic is made up of the heater coil that is wrapped in insulator and ring-shaped pottery outer insulator in the ring-shaped pottery and is wrapped in high-temperature insulation between the two.
The beneficial effect of the utility model is:
1. simple in structure, deft design, thermal loss are little, can need not direct heating, need not to be incubated, and be greatly energy-conservation.
2. safety uses insulating material to adopt contactless design, and the eddy-current heating that utilizes electromagnetic induction in conductor, to produce comes the principle of heating mould, makes equipment or product that charged danger take place after preventing to damage.
3. can make different shape, can be to special-shaped mould mouth (necessary ferromagnetism material) surface heating.
4. firing rate is fast, can enhance productivity, and temperature-controlled precision is high, and the controllable temperature precision reaches ± and 0.5 ℃.
5. electromagnetic induction heating is convenient to control, easily is automated, and can accomplish that automatic Synchronization Control need not artificial interference according to cable production line speed.
6. heating-up temperature is stablized, heating is evenly distributed, and has improved the presentation quality and the overall performance of cable cover(ing) greatly.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the high-frequency vortex field generator for magnetic structural representation of the utility model.
Embodiment
Like Fig. 1, shown in 2; The control device of a kind of cable extruder external mold preheating; Comprise the outer die orifice 2 of extruder, also comprise high-frequency vortex field generator for magnetic 4, adjustable support 5, high-frequency vortex field generator for magnetic 4 spiral shells dress is fixed on adjustable support 5; Adjustable support 5 is arranged on outer die orifice 2 one sides of extruder, and the endoporus 2-1 of the outer die orifice of extruder is concentric with the endoporus 4-4 of high-frequency vortex field generator for magnetic; High-frequency vortex field generator for magnetic 4 is made up of insulator 4-1 in the ring-shaped pottery and ring-shaped pottery outer insulator 4-2 and the heater coil 4-3 that is wrapped in high-temperature insulation between the two.
Method for using: the output of high-frequency circuit adjuster is connected on the binding post 4-31 of high-frequency vortex field generator for magnetic 4; Position between the outer die orifice 2 of adjustment high-frequency vortex field generator for magnetic 4 (outer die orifice heaters) and extruder; The outer die orifice 2 of extruder can contact installation under the premise that security is guaranteed with high-frequency vortex field generator for magnetic 4; But suggestion does not contact usually; The best is reserved the air gap of 1-1.5mm, can improve the useful life and the coefficient of safety of high-frequency vortex field generator for magnetic 4 like this.Again cable inner conductor 7 is passed die orifice 1 in the extruder, the outer die orifice 2 of extruder successively; High-frequency vortex field generator for magnetic 4, walk around draw-gear 3; High molecule plastic fluid 6 is injected in the extruder between the die orifice 1 and the outer die orifice 2 of extruder by extrusion main unit; Regulate the speed of high molecule plastic fluid 6 and draw-gear 3, promptly control the external diameter of finished cable 8, apply adjustable high-frequency current for high-frequency vortex field generator for magnetic 4 through the high-frequency circuit adjuster then and come to outer die orifice 2 heating of extruder; The temperature of the outer die orifice 2 of extruder is even, and is stable.
Operation principle is: electromagnetic induction and eddy-current heating.
Induction heating essence is the electric heating that the eddy-current heating that utilizes electromagnetic induction in conductor, to produce comes heating mould; It is to rely on inductor to give heated mould electrical energy transfer through electromagnetic induction; Electric energy changes heat energy at mould inside, reaches the purpose of heating mould.With the heating circular die is example; The electric current of high-frequency vortex field generator for magnetic 4 produces alternating magnetic fields (according to the law of electromagnetic induction) through the heater coil 4-3 of high-temperature insulation, when the magnetic line of force in the magnetic field passes through metal die to be heated, and the outer die orifice 2 formation loops of the magnetic line of force penetrating metal die extruder of alternation; So in its cross section, produce induced current; This electric current is called eddy current, can make the outer die orifice 2 local heatings rapidly of extruder to be heated, and then reaches the purpose of heating mould.As everyone knows, when passing to alternating current for a round conductor, the current density of conductive surface is maximum, and inner current density is minimum, just said kelvin effect.Therefore the surface of the outer die orifice 2 of extruder is heated; Can avoid making the sizing material between interior die orifice 1 of extruder and the outer die orifice 2 of extruder burnt like this; Change the frequency of alternation high-frequency vortex field generator for magnetic 4 through the high-frequency circuit modulator; Just can regulate the size of eddy current, and then the temperature of the outer die orifice 2 of control extruder, the temperature difference can be as accurate as ± and about 0.5 ℃.Through connecting the interlock of extrusion main unit frequency converter, can regulate automatically again, guarantee the stable of mold temperature, make the cable surface of producing reach requirement according to the speed of production line.
Claims (1)
1. the control device of cable extruder external mold preheating; Comprise the outer die orifice (2) of extruder; It is characterized in that: also comprise high-frequency vortex field generator for magnetic (4), adjustable support (5); Said high-frequency vortex field generator for magnetic (4) is fixed on adjustable support (5), and said adjustable support (5) is arranged on outer die orifice (2) one sides of extruder, and the endoporus (2-1) of the outer die orifice of extruder is concentric with the endoporus (4-4) of high-frequency vortex field generator for magnetic; High-frequency vortex field generator for magnetic (4) is made up of insulator in the ring-shaped pottery (4-1) and ring-shaped pottery outer insulator (4-2) and the heater coil (4-3) that is wrapped in high-temperature insulation between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222624 CN202615939U (en) | 2012-05-17 | 2012-05-17 | A control device for preheating an outer mould of a cable extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222624 CN202615939U (en) | 2012-05-17 | 2012-05-17 | A control device for preheating an outer mould of a cable extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202615939U true CN202615939U (en) | 2012-12-19 |
Family
ID=47349614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220222624 Expired - Lifetime CN202615939U (en) | 2012-05-17 | 2012-05-17 | A control device for preheating an outer mould of a cable extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202615939U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979029A (en) * | 2017-11-29 | 2018-05-01 | 宁波江北清纬环保科技有限公司 | Environmentally friendly retracting device |
| CN112653035A (en) * | 2020-11-30 | 2021-04-13 | 浙江建设职业技术学院 | Wire insulation repair system |
-
2012
- 2012-05-17 CN CN 201220222624 patent/CN202615939U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979029A (en) * | 2017-11-29 | 2018-05-01 | 宁波江北清纬环保科技有限公司 | Environmentally friendly retracting device |
| CN112653035A (en) * | 2020-11-30 | 2021-04-13 | 浙江建设职业技术学院 | Wire insulation repair system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |