CN102137523B - Electromagnetic induction heating press-roller - Google Patents
Electromagnetic induction heating press-roller Download PDFInfo
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- CN102137523B CN102137523B CN 201110097255 CN201110097255A CN102137523B CN 102137523 B CN102137523 B CN 102137523B CN 201110097255 CN201110097255 CN 201110097255 CN 201110097255 A CN201110097255 A CN 201110097255A CN 102137523 B CN102137523 B CN 102137523B
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- induction heating
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- rotating shaft
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Abstract
The invention discloses an electromagnetic induction heating press-roller, which has an integral double-end supporting structure and comprises a rotating device and a fixing device, wherein the rotating device consists of an action roller and a rotating shaft which are connected; the rotating shaft inputs a rotating torque to drive the action roller to rotate; the fixing device consists of a fixed shaft, a sleeve arranged on the outer side of the fixed shaft, magnetizers and excitation coils; through the magnetizers and excitation coils segmentedly installed outside the sleeve, a magnetic air gap is formed between the outside end face of the fixed magnetizer and the inner circular face of the rotating action roller; the alternating magnetic field forms a circuit through the magnetizer, the air gap and the action roller metal; the magnetic field in the action roller forms an eddy current so as to uniformly heat the working face of the rotating action roller. Since a structure of axially segmented magnetizers and excitation coils is adopted, a magnetic circuit is formed on the working face metal of the heating roller only to avoid the magnetic circuit penetration of the non-heating working part and reduce the excitation current, and simultaneously prevent the machine parts from overheating; besides, the induction heating efficiency can be improved so as to control the axial temperature gratitude of the heating roller continently.
Description
Technical field
The present invention relates to a kind of electromagnetic induction heating pressure roller.This electromagnetic induction heating pressure roller is used for the contact of thin slice strip material is exerted pressure, and material-to-be-heated temperature is risen.The hot pressing that is specially adapted to thin-film material is heated.
Background technology
In film coil being carried out shaping, production technology such as compound, need to adopt hot-rolling carry out the Continuous Contact heating to material, the hot-rolling in the production reality generally adopts direct electric heating or adopts oil to heat as heat-conducting medium.Along with development of electronic technology, the hot-rolling of electromagnetic-induction heating method has appearred adopting, compares with oily heat conduction heating means, electromagnetic induction heating is easy to control, does not produce grunge pollution.
China Department of Intellectual Property of people republic has announced " electromagnetism warm-up mill " patent (Granted publication CN 2622741Y) on June 30th, 2004; The electromagnetism warm-up mill that provides is characterised in that induction coil is installed in the steel roller body through coil rack, coil installation shaft and coil fixing device; A plurality of induction coils are that the center is on a skeleton with the roller axis; Its weak point is that the magnetic circuit that induction coil forms must pass through other position beyond the roller working face; Position such as roller end and roller rotating shaft for example, these positions by the eddy current heating after, with the efficiency of heating surface that reduces warm-up mill; Simultaneously, increased temperature controlled difficulty to the warm-up mill working face.
China Department of Intellectual Property of people republic has announced " a kind of control method of the heating roller temperature uniformity and device " (application publication number CN 101937246 A) on January 5th, 2011; A kind of aligning method of improved warm-up mill warmer is provided; It is characterized in that electromagnetic heater is a plurality of electromagnetism heating collars more than three, controls the temperature uniformity of warm-up mill through the caloric value of controlling the electromagnetism heating collar respectively.Its control method be with the electromagnetism heating collar in warm-up mill inside along the warm-up mill axially-aligned, according to warm-up mill heat radiation situation, adopt the electromagnetism heating collar of different heat power.Control the temperature of warm-up mill through control as the caloric value of the electromagnetism heating collar of warmer, its weak point be the caloric value of electromagnetism heating collar in the transmittance process of warm-up mill, heat transfer efficiency is low, is difficult to control the temperature accuracy of warm-up mill.
In the occasion of the temperature gradient of needs control warm-up mill working face, need reasonably arrange load coil.The present invention provides structure, layout and the mount scheme of a kind of magnetic conductor and coil for solving heating pressure roller working face temperature gradient control precision.
Summary of the invention
The present invention's technical problem to be solved by this invention is: for solving the problem that exists in the prior art, a kind of ability high efficiency heating of metal roller working face temperature and the electromagnetic induction heating pressure roller that can carry out temperature gradient control to heating of metal roller working face are provided.
The present invention solves its technical problem and adopts following technical scheme:
Electromagnetic induction heating pressure roller provided by the invention is whole both-end supporting construction, comprises whirligig and fixture, and wherein: whirligig is made up of the action roller, the rotating shaft that connect, by rotating shaft input rotating torque, drives the action roller rotation; Fixture is contained in the sleeve in the dead axle outside by dead axle, and magnetic conductor and magnetizing coil formation; Be installed in magnetic conductor and magnetizing coil on the sleeve outside through segmentation; Form magnetic air gap at the fixing magnetic conductor outside end face and the action roller inner headed face of rotation; Alternating magnetic field constitutes the loop through magnetic conductor, air gap and action roller metallic object; Magnetic field in the action roller forms eddy current, and the action roller working face that makes rotation is by evenly heating.
Said dead axle is a hollow-core construction, and this dead axle one end is installed on the frame.
Said magnetic conductor and magnetizing coil can axially divide the N section to be fixedly mounted on the sleeve outside, and N is more than or equal to 2.
Every section constitutes one group by L magnetic conductor and magnetizing coil, and L is more than or equal to 2, and magnetic conductor arranges evenly that along the sleeve circumference magnetizing coil of each section adopts series system or parallel way to connect, by the power supply power supply of independent control.
The two groups of magnetic conductors and the magnetizing coil of adjacent segment can be arranged in juxtaposition in the sleeve periphery vertically.
Two groups of magnetic conductors of adjacent segment and magnetizing coil can also be in the sleeve periphery interlaced arrangement vertically.
Said magnetic conductor outside end face is relative with the action roller inner headed face, and end face is the arc surface coaxial with the action roller inner headed face outside the magnetic conductor, and the radius of arc surface is less than action roller inner headed face radius, and each magnetic conductor is by around above that magnetizing coil excitation field.
The said action roller that connects with rotating shaft, its other end can link to each other with dead axle through bearing.
Said rotating shaft one end can be through Bearing Installation at dead axle, the other end of rotating shaft then through Bearing Installation on frame.
Can be in the action roller working face by an axial embedding and the corresponding N of a magnetizing coil segments temperature sensor; N is more than or equal to 2; Each temperature sensor is positioned at the magnetic conductor center of corresponding section; The signal of telecommunication of temperature sensor is used for each section magnetizing coil power supply is carried out the independent temperature closed-loop control by the processes temperature signal processing of circuit.
The present invention compares with the heating pressure roller technical scheme of present employing, has following main advantage:
One of which, can improve induction heating efficient:
Because of adopting axial segmentation magnetic conductor and magnetizing coil structure, only form magnetic circuit at warm-up mill working face metallic object, so can avoid non-heating work position magnetic circuit to pass through, reduced exciting curent; Simultaneously, because of the axial segmentation magnetic conductor forms even air gap with being heated metal covering, leakage field is little, so can improve induction heating efficient.
Its two, can avoid the parts problems of excessive heat:
Because magnetic circuit mainly through the warm-up mill working face, can not cause heating the parts problems of excessive heat that causes in rotating shaft, bearing and supporting structure induced inside.
Its three, be convenient to control the axial-temperature gradient of warm-up mill:
Arrange magnetic conductor and magnetizing coil structure owing to adopt axial segmentation; Realize that each section is independently-powered; The temperature sensor that cooperates the segmentation of warm-up mill working face to arrange provides the axial segmentation independent temperature closed-loop control to heating pressure roller working face, so can carry out temperature gradient control to the warm-up mill working face.
Description of drawings
Fig. 1 is the profile of the electromagnetic induction heating pressure roller of embodiments of the invention 1.
Fig. 2 is the cutaway view of the A-A line of Fig. 1.
Fig. 3 is the stereogram of magnetic conductor 8 and magnetizing coil 9 among Fig. 1.
Fig. 4 is magnetic conductor 8 and magnetizing coil 9 stereogram that segmentation is installed side by side on sleeve.
Fig. 5 is magnetic conductor 8 and magnetizing coil 9 stereogram that subsection interleaving is installed on sleeve.
Among the figure: 1. rotating shaft; 2. end cap; 3. left side frame; 4. processes temperature signal circuit; 5. sensor cable; 6. key; 7. temperature sensor; 8. magnetic conductor; 9. magnetizing coil; 10. sleeve; 11. disk; 12. feed cable; 13. right side frame; 14. dead axle; 15. clutch shaft bearing; 16. collar; 17. dead axle end cap; 18. disk end cap; 19. second bearing; 20. action roller; 21. the 3rd bearing; 22. dish seat; 23. the 4th bearing.
Embodiment
Electromagnetic induction heating pressure roller provided by the invention comprises the whirligig that a cover is made up of action roller, rotating shaft, the fixture that a cover is made up of dead axle, sleeve, magnetic conductor and magnetizing coil.One end of action roller is fixedly connected with rotating shaft, the other end of action roller through bearings on dead axle; One end of rotating shaft is inner at dead axle through two Bearing Installation, and the other end of rotating shaft on frame, drives action roller rotation by rotating shaft through Bearing Installation.One end of dead axle is fixed on the frame, the installing sleeve in the outside of dead axle, and magnetic conductor and magnetizing coil are fixed on the sleeve.The fixing magnetic conductor outside end face and the action roller inner headed face of rotation form magnetic air gap, and alternating magnetic field constitutes the loop through magnetic conductor, air gap and action roller metallic object, and the magnetic field in the action roller forms eddy current, and the action roller working face that makes rotation is by evenly heating.
Magnetic conductor is arranged along the segmentation of action roller working face; A plurality of magnetic conductors in each section are evenly arranged along the sleeve circumference; All magnetizing coils adopt series system to connect or the parallel way connection in one section, by independently power supply power supply, regulate source current effective value size; Can change the induction heating energy of this section working face of warm-up mill, and then change the temperature of this section of warm-up mill working face.Roll surface at action roller is inner, and corresponding every section magnetic conductor center embeds mounting temperature sensor, detects the heating-up temperature of each section of warm-up mill, is used for the power supply of each section is regulated respectively, realizes the closed-loop control of segmentation independent temperature.
Below in conjunction with embodiment and accompanying drawing the present invention is further specified.
The electromagnetic induction heating pressure roller that present embodiment provides, its structure such as Fig. 1 are to shown in Figure 4: comprise the whirligig that a cover is made up of rotating shaft 1, action roller 20, the fixture that a cover is made up of magnetic conductor 8, magnetizing coil 9, sleeve 10 and dead axle 14.
Three bearings are installed in the said rotating shaft 1, wherein: on the right side of key 6 installation sites two bearings are arranged, i.e. clutch shaft bearing 15 and the 3rd bearing 21, these two bearings are separated by a distance, and its outer ring is fixedly mounted on the inboard of dead axle 14.The outer ring of clutch shaft bearing 15 is fixed in the bearing position of dead axle 14 by end cap 17.Right-hand member in rotating shaft 1 is equipped with collar 16, and countershaft 1 carries out axial restraint.The left end of rotating shaft 1 is installed on the frame 3 of left side through the 4th bearing 23, and end cap 2 is used for the slippage of backstop the 4th bearing 23 outer rings, so the left side of electromagnetic induction heating pressure roller receives left side frame 3 and supports.From the right-hand member input torque of rotating shaft 1, drive action roller 20 and rotate.
The left end of said action roller 20 is connected with dish seat 22, is provided with keyway in the central shaft hole of dish seat 22, and dish seat 22 is installed in the rotating shaft 1, and is fixedly connected by key 6.The right-hand member of action roller 20 is connected with disk 11, and disk 11 centers are installed second bearing, 19, the second bearings 19 and are pressed in the bearing position of disk 11 through disk end cap 18; The inner ring of second bearing 19 is installed on the dead axle 14, so the right-hand member of action roller 20 obtains the support of dead axle 14.
The right side of said dead axle 14 is installed on the right side frame 13, and by bolt.Sleeve 10 closely is connected with dead axle 14 outsides, so sleeve 10 can not be with respect to dead axle 14 rotations.Sleeve 10 is used for fixing installs magnetic conductor 8.Periphery at the right-hand member of dead axle 14 has cable trough, and feed cable 12 passes through the inner ring of second bearing 19 through cable troughs, and magnetizing coil 9 is linked to each other with the externally fed power supply.
Referring to Fig. 1, Fig. 2, in the present embodiment along sleeve 10 axially, six sections magnetizing coil groups are arranged, form by eight magnetizing coils for every section, magnetizing coil 9 is on the intermediate magnetic post of magnetic conductor 8.Referring to Fig. 2, magnetic conductor 8 is fixedly mounted in the groove that all should distribute along sleeve 10 peripheries.Eight magnetizing coils in one section connect with series system or parallel way connects, and constitute one group of magnetizing coil group that ability is independently-powered.
Like Fig. 2, shown in Figure 3, the end face of magnetic conductor 8 is an arc surface, and arc radius its objective is between magnetic conductor 8 end faces and action roller 20 inner headed faces, to form uniform magnetic air gap less than the inner headed face radius of action roller 20.
As shown in Figure 4, the two groups of magnetic conductors and the magnetizing coil of adjacent segment are arranged in juxtaposition in sleeve 10 peripheries vertically.
With reference to Fig. 1; In the metallic object of action roller 20; Embed six temperature sensors 7 corresponding to six sections magnetic conductor 8 segmentations; These temperature sensors evenly distribute along circumference in action roller 20, and are installed in the magnetic conductor center of corresponding section vertically respectively, and they are connected to the processes temperature signal circuit 4 that rotates synchronously with action roller 20 through sensor cable 5 respectively.
Said processes temperature signal circuit 4 is a prior art, and it comprises temperature sensor signal modulate circuit, signals collecting and digital signal processing circuit and temperature data signal wireless transmission circuit.
The electromagnetic induction heating pressure roller that present embodiment provides; Its course of work is: electromagnetic induction heating roller left side is installed on the frame 3 of left side through the 4th bearing 23; The right side of electromagnetic induction heating roller is installed on the right side frame 13 through dead axle 14; So the electromagnetic induction heating roller is supported on left side frame 3 and the right side frame 13.When rotating, also rotate with rotating shaft 1 through the action roller 20 of dish seat 22 with rotating shaft 1 fixed connection by prime mover drive rotating shaft 1.In the arbitrary section magnetizing coil group of arranging along action roller 20 axial segmentation, apply alternating current, alternating current forms magnetic field, constitutes the closed magnetic line of force through air gap and action roller 20 metallic objects between magnetic conductor 8 inside, magnetic conductor 8 end faces and action roller 20 inner headed faces; In action roller 20 metallic objects, can produce eddy current in the plane vertical with magnetic line of force generation, the thermal effect of eddy current is heated action roller 20 metallic objects.Because the rotation of action roller 20, the one section action roller surface corresponding with this section magnetizing coil group is by evenly heating.So that first section magnetizing coil group is example from a left side; When this section magnetizing coil group is worked; The temperature sensor 7 that is embedded in this section action roller 20 metallic objects is experienced action roller 20 actual temperatures; Processes temperature signal circuit 4 becomes temperature data signal with the converting electrical signal of respective temperature sensor 7, and corresponding control circuit is controlled the power supply of this section magnetizing coil group according to the temperature data signal that receives, and changes output power to guarantee the temperature value of this section of action roller temperature in hope.The heating control principle of action roller 20 other each sections is identical, so action roller 20 surfaces can be effectively controlled according to desired value along the temperature gradient of each section of axis direction.
Embodiment 2:
The difference of present embodiment and embodiment 1 is: two groups of magnetic conductors of adjacent segment and induction coil be interlaced arrangement vertically in sleeve 10 peripheries.As shown in Figure 5; From relative the 2nd, 4, the 6 section respectively 22.5 ° of angles of circumference of magnetic conductor deflection of the 1st, 3,5 sections magnetic conductors of left; This subsection interleaving method for arranging can further reduce the excitatory coupling of adjacent segment, helps improving each section of warm-up mill working face temperature control precision.
Above embodiment is in order to make technology contents of the present invention more clear, and the present invention is not limited to these concrete explanations, in the described scope of the claim of this invention, can do various changes and implement.
Claims (10)
1. the electromagnetic induction heating pressure roller comprises whirligig and fixture, it is characterized in that said electromagnetic induction heating pressure roller is whole both-end supporting construction; Wherein: whirligig is made up of the action roller, the rotating shaft that connect, by rotating shaft input rotating torque, drives the action roller rotation; Three bearings are installed in the said rotating shaft; Wherein the outer ring of two bearings is fixedly mounted on the inboard of dead axle, and another bearing outer ring of rotating shaft is installed on the frame, makes rotating shaft one side obtain the support of frame; The left end of said action roller is fixedly connected in the rotating shaft by key through the dish seat, and the right-hand member of action roller is supported on the frame by dead axle; Fixture is contained in the sleeve in the dead axle outside by dead axle, and magnetic conductor and magnetizing coil formation; Be installed in magnetic conductor and magnetizing coil on the sleeve outside through segmentation; Form magnetic air gap at the fixing magnetic conductor outside end face and the action roller inner headed face of rotation; Alternating magnetic field constitutes the loop through magnetic conductor, air gap and action roller metallic object; Magnetic field in the action roller forms eddy current, and the action roller working face that makes rotation is by evenly heating.
2. electromagnetic induction heating pressure roller according to claim 1 is characterized in that: dead axle is a hollow-core construction, and dead axle one end is installed on the frame.
3. electromagnetic induction heating pressure roller according to claim 1 is characterized in that: said magnetic conductor and magnetizing coil are axially dividing the N section to be fixedly mounted on the sleeve outside, and N is more than or equal to 2.
4. electromagnetic induction heating pressure roller according to claim 3; It is characterized in that: every section constitutes one group by L magnetic conductor and magnetizing coil; L is more than or equal to 2; Magnetic conductor arranges evenly that along the sleeve circumference magnetizing coil of each section adopts series system or parallel way to connect, by the power supply power supply of independent control.
5. electromagnetic induction heating pressure roller according to claim 3 is characterized in that: the two groups of magnetic conductors and the magnetizing coil of adjacent segment are arranged in juxtaposition in the sleeve periphery vertically.
6. electromagnetic induction heating pressure roller according to claim 3 is characterized in that: two groups of magnetic conductors of adjacent segment and magnetizing coil be interlaced arrangement vertically in the sleeve periphery.
7. electromagnetic induction heating pressure roller according to claim 1; It is characterized in that: said magnetic conductor outside end face is relative with the action roller inner headed face; Magnetic conductor outside end face is the arc surface coaxial with the action roller inner headed face; The radius of arc surface is less than action roller inner headed face radius, and each magnetic conductor is by around above that magnetizing coil excitation field.
8. electromagnetic induction heating pressure roller according to claim 1 is characterized in that: the said action roller that connects with rotating shaft, its other end links to each other with dead axle through bearing.
9. electromagnetic induction heating pressure roller according to claim 1 is characterized in that: said rotating shaft one end through Bearing Installation at dead axle, the other end of rotating shaft through Bearing Installation on frame.
10. electromagnetic induction heating pressure roller according to claim 1; It is characterized in that: embed and the corresponding N of a magnetizing coil segments temperature sensor by axial in the action roller working face; N is more than or equal to 2; Each temperature sensor is positioned at the magnetic conductor center of corresponding section, and the signal of telecommunication of temperature sensor is used for each section magnetizing coil power supply is carried out the independent temperature closed-loop control by the processes temperature signal processing of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097255 CN102137523B (en) | 2011-04-19 | 2011-04-19 | Electromagnetic induction heating press-roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097255 CN102137523B (en) | 2011-04-19 | 2011-04-19 | Electromagnetic induction heating press-roller |
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| Publication Number | Publication Date |
|---|---|
| CN102137523A CN102137523A (en) | 2011-07-27 |
| CN102137523B true CN102137523B (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110097255 Expired - Fee Related CN102137523B (en) | 2011-04-19 | 2011-04-19 | Electromagnetic induction heating press-roller |
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| CN (1) | CN102137523B (en) |
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| CN103096552A (en) * | 2013-01-15 | 2013-05-08 | 石家庄纺织机械有限责任公司 | Electromagnetic induction heating roll |
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| CN113701490B (en) * | 2021-08-26 | 2023-06-02 | 刘哲民 | Asynchronous electronic heating assembly of autogenous rotation formula external rotor and drying equipment |
| CN114083262B (en) * | 2021-11-24 | 2022-09-06 | 南通熙泰机电科技有限公司 | A compression fittings that is used for electromagnetic heating roller to embed induction coil installation |
| CN116334872A (en) * | 2021-12-22 | 2023-06-27 | 奥美医疗用品股份有限公司 | Structure and method for heating roller with different temperature sections |
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| JPS62113379A (en) * | 1985-11-12 | 1987-05-25 | トヨタ自動車株式会社 | Electromagnetic induction heating coil and manufacture of the same |
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| EP0445723A2 (en) * | 1990-03-08 | 1991-09-11 | Ykk Corporation | Apparatus for drying beltlike article, and induction heater having rotary drums |
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