CN203027104U - Heating device for motor rotor core - Google Patents
Heating device for motor rotor core Download PDFInfo
- Publication number
- CN203027104U CN203027104U CN 201220661622 CN201220661622U CN203027104U CN 203027104 U CN203027104 U CN 203027104U CN 201220661622 CN201220661622 CN 201220661622 CN 201220661622 U CN201220661622 U CN 201220661622U CN 203027104 U CN203027104 U CN 203027104U
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- iron core
- induction coil
- motor rotor
- heater
- positioning seat
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Abstract
The utility model discloses a heating device for a motor rotor core. The heating device comprises a heating platform, wherein a plurality of core locating devices and induction heating devices corresponding to the core locating devices are arranged on the heating platform, each core locating device comprises a locating seat on the heating platform and a locating pin which is arranged on the top of the locating seat and is used for locating a core, each induction heating device comprises an induction coil and a fixed plate for fixing the induction coil, and the center line of each induction coil coincides with the center line of the corresponding locating pin. The heating device enables the regions of the core to have balanced temperatures, to be heated up rapidly and to have high energy utilization rates.
Description
Technical field
The utility model belongs to rotor and makes the field, especially relates to a kind of heater of motor rotor core.
Background technology
At present, iron core of rotor of motor normally adopts the silicon steel plate punching, is overrided to form.For the rotor of squirrel cage motor, on the iron core sidewall, sliver is set, sliver two ends have respectively a short circuit ring sliver to couple together to form a mouse cage shape.Sliver adopts copper or aluminium to make usually, adopts welding or casting method to make winding.Before adopting the casting method casting, iron core need to be heated, thereby when casting, avoid cast(ing) surface defective to occur, thereby the assurance winding can be obtained preferable quality.
In existing technology, iron core is heated conventional meanses such as usually utilizing heating element heat, as Chinese patent Granted publication number: CN 201672794U on December 12 2010 Granted publication day, discloses a kind of continuous tunnel furnace.the primary structure that consists of this continuous tunnel furnace is divided into feed zone, the cartridge type body of heater of bringing-up section and discharging section, in body of heater, bringing-up section is provided with heating element and by the running roller that is arranged at the bringing-up section both ends, the material transport mechanism that drive and conveyer belt consist of, charging aperture and discharging opening are arranged at the two ends of cartridge type body of heater, cartridge type body of heater middle part is provided with steam vent, feed zone in above-mentioned cartridge type furnace binding, bringing-up section and discharging section form bringing-up section higher than the domes of feed zone and discharging section, and make the upper edge of charging aperture and discharging opening lower than the height of inboard wall of furnace body in bringing-up section.When heating with this continuous tunnel furnace, heated material is directly faced the zone, particularly lower end of heating element because the regional temperature rising of more close heating unit is the fastest, and temperature rising in middle part is slower, the object upper, middle and lower inequality of being heated, the zones of different temperature differs larger; In heating process, owing to being that heat is to be delivered to gradually interior of articles from the surface, the intensification of interior of articles is comparatively slow.Therefore need to improve the quantity of heating unit, the length that adds long tunnel, make the regional temperature equalization of object, but the heat major part that produces due to heating element all loses, only have the fraction heat to be absorbed by object, the utilance of energy is lower, improves the quantity of heating unit, the length that adds long tunnel has increased the loss of energy especially greatly.
The utility model content
The utility model is in order to overcome prior art when heating iron core upper bottom be heated inequality, temperature rises slowly, the heater capacity usage ratio is not high deficiency, and also higher heater of very fast, capacity usage ratio provides a kind of and can make iron core regional temperature equalization, heated up.
To achieve these goals, the utility model is by the following technical solutions:
A kind of heater of motor rotor core, comprise heating station, described heating station is provided with some iron core locating devices and the induction heating equipment corresponding with iron core locating device, described iron core locating device comprises and is located at the positioning seat on heating station and is positioned at the positioning seat top, is used for the alignment pin of location iron core, described induction heating equipment comprises induction coil and the fixed head that is used for fixed inductor, and the center line of described induction coil and alignment pin center line overlap.Heater of the present utility model positions iron core by alignment pin, passes to electric current of intermediate frequency at induction coil, and induction coil forms alternating magnetic field, is positioned at the iron core at induction coil center because magnetic flux constantly changes the generation eddy current, and self is heated.Owing to iron core each position can heating simultaneously, the temperature of iron core raises very fast, and iron core is heated also comparatively even, and the Conversion of Energy utilance is high.
As preferably, described positioning seat lower end is provided with the fairlead that connects heating station, be provided with the push rod that fairlead relatively slides up and down in described fairlead, the top of described push rod and the bottom of positioning seat are fixed, and the bottom of described push rod is provided with and can promotes the push pedal that push rod moves up and down.Push pedal can promote push rod, and positioning seat is upwards released, and makes iron core enter into induction coil inside fully.The Distribution of Magnetic Field of induction coil inside is comparatively even, and in galvanization, the magnetic flux on the iron core transverse cross section also changes simultaneously, and is therefore also comparatively even for the heating of iron core.
As preferably, described induction coil is provided with upper magnet yoke outward, and described positioning seat is provided with the lower yoke that matches with upper magnet yoke.Upper magnet yoke, lower yoke are arranged by the silicon steel sheet vertical direction and are overrided to form, and are used for strengthening magnetic flux density.Simultaneously, upper magnet yoke and lower yoke cover on the iron core outside, and iron core and extraneous air is isolated, reduce heat and outwards distribute, and play certain insulation effect.Induction coil is in the inside of upper magnet yoke in addition, and upper magnet yoke can play a protective role to induction coil.
As preferably, described upper magnet yoke center is provided with a movable yoke of fixed head slip relatively, described movable yoke top is provided with spring, and the described spring other end is connected with a spring housing that can hold movable yoke, and described spring housing is fixedly connected with fixed head.Before heating, iron core enters into induction coil, and the iron core upper end contact with the movable yoke bottom, and with upwards promotion of movable yoke, spring-compressed compresses iron core with movable yoke, with the iron core positioning stablity.Magnetic induction line can form closed magnetic circuit along movable yoke, upper magnet yoke, lower yoke and iron core, can avoid leakage field as far as possible, thereby makes most of magnetic induction line by iron core, thereby further improves the utilance of electric energy.And in when heating, the iron core upper end contacts with movable yoke, and there is lower yoke the lower end, makes iron core be positioned at the centre position of induction coil inside, and magnetic induction is comparatively even, is conducive to reduce the temperature difference of the upper bottom of iron core.
As preferably, described induction coil adopts hollow copper tubing to make.Can lead to like this cooling water and whole induction coil be carried out cooling in hollow copper tubing, reduce the temperature of induction coil.
As preferably, also comprise the clamping device corresponding with iron core locating device, described clamping device comprises the jaw by air cylinder driven.Jaw can be transported to iron core on heating stations at different levels, makes iron core to heat step by step.
Therefore, the utlity model has following beneficial effect: the upper bottom heating of (1) iron core is comparatively even, and temperature raises rapidly, has improved production efficiency; (2) improve capacity usage ratio, saved energy consumption; (3) the iron core inside and outside temperature difference is less, has guaranteed the castability of aluminium cage; (4) by stepped heating, the control of the temperature of iron core is comparatively accurate.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is vertical view of the present utility model.
In figure, fixed head 1, induction coil 2, iron core 3, alignment pin 4, lower yoke 5, lower installation board 6, heating station 7, positioning seat 8, push rod 9, push pedal 10, fairlead 11, jaw 12, upper magnet yoke 13, movable yoke 14, spring 15, spring housing 16.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
In embodiment as shown in Figure 1, a kind of heater of motor rotor core, comprise a heating station 7, heating station is provided with positioning seat 8, the positioning seat top is fixed with an alignment pin 4, alignment pin and positioning seat have consisted of iron core locating device, and the centre bore by alignment pin and iron core 3 matches, and iron core is positioned.The alignment pin top is provided with induction coil 2, and induction coil adopts hollow copper tubing to make, and can lead to cooling water in induction coil and carry out cooling to it when the energising heating.Induction coil center line and alignment pin center line overlap, and induction coil is arranged on fixed head 1, has consisted of induction heating equipment, and fixed head adopts epoxy plate to make, and makes more for convenience.The positioning seat below is provided with a fairlead 11, fairlead connects heating station, be provided with push rod 9 in fairlead, push rod can slide up and down in fairlead, and the top of push rod and the bottom of positioning seat are fixed, the bottom of push rod and push pedal 10 are fixing, therefore positioning seat can move up and down, and when positioning seat moved upward, iron core can enter in induction coil, Distribution of Magnetic Field in induction coil is comparatively even, and is also comparatively balanced to the heating of iron core regional.Induction coil is provided with upper magnet yoke 13 outward, and upper magnet yoke and fixed head fix.Positioning seat is provided with can be with upper magnet yoke to the lower yoke 5 of mating, and lower yoke is fixed by lower installation board 6 and positioning seat.The upper magnet yoke center is provided with a movable yoke 14, and fixed head slides relatively, and the movable yoke top is provided with spring 15, and the other end of spring is connected with a spring housing 16, and spring housing is fixed on fixed head, and can hold movable yoke in spring housing.Upper magnet yoke, lower yoke are all to adopt silicon steel sheet to arrange at vertical direction to be overrided to form, and leakage field is avoided in magnetic field that can intensifier coil, in iron core can being coated on when heating simultaneously, is hedged off from the outer world, and certain insulating power is provided.In addition, also have clamping device, comprise jaw 12, jaw drives by cylinder, is used for the gripping iron core, and iron core is positioned and moves.The jaw inboard can arrange thermal insulation layer, thus dispersed heat when reducing the gripping iron core.
As shown in Figure 2, this heater can heat two groups of iron cores simultaneously, and every group be provided with respectively the level Four heating station, is followed successively by from top to bottom in the drawings first order heating station, second level heating station, third level heating station and fourth stage heating station.Each iron core passes through this four heating stations, and the temperature of iron core also improves step by step.In addition, every grade of corresponding power frequency of heating station also improves step by step, with convenient, the temperature of iron core is controlled.On fourth stage heating station, the power frequency of corresponding induction coil is relatively the highest, make the interior eddy current skin effect of iron core comparatively obvious, in iron core, the temperature near the surface is also relatively high like this, can be used for offsetting the complete rear conveying of heating and remove the heat that in cast aluminum cage winding process, the iron core surface can dissipate, before casting, the core exterior surface temperature can not descend too much.The core exterior surface heat is after course of conveying scatters and disappears, and the iron core internal and external temperature differs less, occurs the possibility of defective in the time of can reducing like this casting, improves yields and the castability of aluminium cage.
Before heating, the first gripping iron core of jaw is delivered to the positioning seat of first order heating station, the central aperture alignment pin of iron core is also put into, then cylinder promotes push pedal, with positioning seat jack-up, iron core enters into the induction coil center of top like this by push rod, and induction coil is connected electric current of intermediate frequency, in iron core, magnetic flux constantly changes, and the inner eddy current that produces heats iron core self.At first order heating station, iron core is heated to 100 degree, after temperature reaches, positioning seat is fallen, and iron core is transported on the positioning seat of second level heating station by jaw, with same method, iron core is heated to 200 degree, process third level heating station rises to 300 degree with the temperature of iron core, and at last by fourth stage heating station, the temperature of iron core arrives 420 to 450 degree.In heating process, can reduce the temperature of induction coil to logical cooling water in induction coil, prevent that coil is overheated, reduce simultaneously the resistance of induction coil, reduce coil for the loss of electric energy.
Claims (6)
1. the heater of a motor rotor core, it is characterized in that, comprise heating station (7), described heating station (7) is provided with some iron core locating devices and the induction heating equipment corresponding with iron core locating device, described iron core locating device comprises the positioning seat (8) that is located on heating station (7) and is positioned at positioning seat (8) top, the alignment pin (4) that is used for location iron core (3), described induction heating equipment comprises induction coil (2) and the fixed head (1) that is used for fixed inductor (2), the center line of described induction coil (2) and alignment pin (4) center line overlap.
2. the heater of a kind of motor rotor core according to claim 1, it is characterized in that, described positioning seat (8) lower end is provided with the fairlead (11) that connects heating station (7), be provided with the push rod (9) that fairlead (11) relatively slides up and down in described fairlead (11), the bottom of the top of described push rod (9) and positioning seat (8) is fixed, and the bottom of described push rod (9) is provided with and can promotes the push pedal (10) that push rod (9) moves up and down.
3. the heater of a kind of motor rotor core according to claim 1, is characterized in that, described induction coil (2) is outer is provided with upper magnet yoke (13), and described positioning seat (8) is provided with the lower yoke that matches with upper magnet yoke (13).
4. the heater of a kind of motor rotor core according to claim 3, it is characterized in that, described upper magnet yoke center is provided with a movable yoke (14) of fixed head (1) slip relatively, described movable yoke (14) top is provided with spring (15), the top other end of described spring (15) is connected with a spring housing (16) that can hold movable yoke (14), and described spring housing (16) is fixedly connected with fixed head (1).
5. the heater of according to claim 1 and 2 or 3 or 4 described a kind of motor rotor cores, is characterized in that, described induction coil (2) adopts hollow copper tubing to make.
6. the heater of according to claim 1 and 2 or 3 or 4 described a kind of motor rotor cores, is characterized in that, also comprises the clamping device corresponding with iron core locating device, and described clamping device comprises the jaw (12) by air cylinder driven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661622 CN203027104U (en) | 2012-12-05 | 2012-12-05 | Heating device for motor rotor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220661622 CN203027104U (en) | 2012-12-05 | 2012-12-05 | Heating device for motor rotor core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203027104U true CN203027104U (en) | 2013-06-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220661622 Expired - Lifetime CN203027104U (en) | 2012-12-05 | 2012-12-05 | Heating device for motor rotor core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203027104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117630A (en) * | 2012-12-05 | 2013-05-22 | 杭州富生电器股份有限公司 | Heating method and heating device of motor rotor iron core |
-
2012
- 2012-12-05 CN CN 201220661622 patent/CN203027104U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117630A (en) * | 2012-12-05 | 2013-05-22 | 杭州富生电器股份有限公司 | Heating method and heating device of motor rotor iron core |
| CN103117630B (en) * | 2012-12-05 | 2014-12-17 | 杭州富生电器股份有限公司 | Heating method and heating device of motor rotor iron core |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 311401, No. nine, No. 1, Dongzhou Industrial Zone, Dongzhou street, Hangzhou, Zhejiang, Fuyang Patentee after: HANGZHOU FUSHENG ELECTRICAL APPLIANCE Co.,Ltd. Address before: 311401, No. nine, No. 1, Dongzhou Industrial Zone, Dongzhou street, Hangzhou, Zhejiang, Fuyang Patentee before: HANGZHOU FUSHENG ELECTRICAL APPLIANCE CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |