CN1362321A - Electromagnetic heating method and heater for sulfurizing machine - Google Patents

Electromagnetic heating method and heater for sulfurizing machine Download PDF

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Publication number
CN1362321A
CN1362321A CN 01114495 CN01114495A CN1362321A CN 1362321 A CN1362321 A CN 1362321A CN 01114495 CN01114495 CN 01114495 CN 01114495 A CN01114495 A CN 01114495A CN 1362321 A CN1362321 A CN 1362321A
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China
Prior art keywords
mould
magnetic
solenoid
current
temperature
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CN 01114495
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Chinese (zh)
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CN1262406C (en
Inventor
黄克
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Zhuzhou Times New Material Technology Co Ltd
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Zhuzhou Times New Material Technology Co Ltd
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Priority to CN 01114495 priority Critical patent/CN1262406C/en
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Publication of CN1262406C publication Critical patent/CN1262406C/en
Anticipated expiration legal-status Critical
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Abstract

The upper and lower plates of rubber and plastic produced mould can be changed into electromagnetic heating plates, and the magnetic cores and magnetic induction coils placed in the upper and lower plates of the mould form strong alternative magnetic field, said magnetic field can produce a loop by means of magnetic core and steel mould, and form vortex induction current in the mould, and the energy of said current can be converted into heat energy by means of resistance in the steel mould, so that the temp. of the mould can be quickly risen to valcanize the rubber in the mould. At the same time it utilizes the thermal resistor placed in the interior of cover plate to detect temp. and can output the temp. to temp. display controller, and utilizes the regualtion of current of electromagnetic coil to control temp.

Description

Vulcanizer electromagnetic heating method and device
The invention belongs to the electrical heating method and the device of vulcanization special use.
The vulcanizer that generally uses in the product of rubber and plastic industry mostly is the heated plate of electrothermal tube form at present, and there is following problem in the mode of heating of this vulcanizing press:
1, the heat efficiency is low, because electrothermal tube is a kind of heating system of form of resistance heat, its heating efficiency itself is lower.In addition because the heat transfer process complexity: the vulcanization of rubber in electrothermal tube → flat board → mould → mould, thermal loss is bigger, and the heat efficiency is 15%~25% only, and energy waste is serious.
2, because temperature element nestles up pyrotoxin (electrothermal tube), and the temperature of its measurement and control is relevant bigger with the curing temperature of rubber, with variation of ambient temperature, its temperature error is about 5~20 ℃, has comparatively seriously influenced the vulcanized quality of product.
3, electrothermal tube belongs to fallible component, and spoilage is higher.Under the situation that one or a few electrothermal tube damages, be difficult to timely discovery, cause dull and stereotyped heating inhomogeneous, and make product rejection.Its maintenance capacity, maintenance cost are also bigger.
The objective of the invention is to provides a kind of heat efficiency height at the deficiency of existing heated plate, influenced by ambient temperature little, not fragile, and vulcanizer electromagnetic heater for ease of maintenaince.
Another object of the present invention is to provide a kind of novel vulcanizer electromagnetic heating method.
According to purpose of the present invention, the technology implementation scheme that is proposed is, utilizes the principle of electromagnetism magnetic induction, changes the mode of heating of vulcanizer mould into the electromagnetism mode of heating, produces alternating magnetic field by the solenoid under the alternating current effect.This magnetic field produces the loop by magnetic core and steel mould, and in mould, forming the vortex shape induced current, the energy of this electric current changes into heat energy by the resistance in the steel mould again, and the temperature of mould is raise rapidly, rubber in the mould is vulcanized, thereby reach the purpose that electromagnetism heats.By the detector unit that is arranged in the electromagnetic heater heating-up temperature is detected simultaneously, and signal is outputed to the temperature display controller, control temperature by the size of adjusting solenoid current.And electromagnetic heater changes the electromagnetism heated plate into by heated plate up and down and realizes.By being arranged on the electromagnet core coil of mould in dull and stereotyped up and down, under the effect of alternating current, form strong alternating magnetic field, come heating mould.
The invention has the advantages that:
1, heat efficiency height: because the electromagnetism heated plate directly uses the mould heating, thereby reduced the thermal loss of heat transfer process, and make that the heat efficiency of itself is just very high because of the heating mechanism of its electromagnetism mode of heating, so the heat efficiency of electromagnetism heated plate reaches more than 80%, improve 2~3 times than electrothermal plate, significantly energy savings.
2, because the interior residing position of rubber of the residing position of temperature element and mould is similar, so temperature detection and control accuracy are higher, the temperature difference of detected temperatures and curing temperature<± 2 ℃ can guarantee the vulcanized quality of product preferably.
3, the electromagnetism heated plate adopts handtailor coil and semiconductor device, and the mean free error time can reach more than 3 years, saves operating cost.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is Electronic Control of the present invention and temperature control principle figure;
Fig. 3 is electromagnetic coil structure figure of the present invention;
Fig. 4 is an electromagnetism heated plate base arrangement schematic diagram of the present invention;
Fig. 5 is an electromagnetism heated plate base plate cross section view of the present invention;
Fig. 6 is an electromagnetism heated plate cover plate floor map of the present invention;
Fig. 7 is an electromagnetism heated plate cover plate generalized section of the present invention.
Among the figure: 1 is upper flat plate, and 2 is mould, and 3 for dull and stereotyped down, and 4 is base plate; 5 is coil, and 6 is magnetic core, and 7 is cover plate; 8 is detector unit, and 9 is Electronic Control and temperature control part branch, and 10 is power rectifier, filter; 11 is solenoid, and 12 for placing the solenoid cavity, and 13 for plugging in the magnetic core aperture; 14 is power output device, and 15 are vibration, drive unit, and 16 is the over-voltage over-current protection device; 17 are no mould protective device, and 18 is the temperature display control unit, and 19 is the cover plate fixing hole.
Accompanying drawing provides a full implementation example of the present invention, and as can be seen, the present invention is a principle of utilizing electromagnetic induction from accompanying drawing, with the upper flat plate 1 of heating mould 2 with dull and stereotyped 3 change the electromagnetism heated plate into down.Solenoid 11 in the electromagnetism heated plate produces alternating magnetic field by alternating current up and down, and the magnetic line of force in magnetic field directly acts on and is placed on up and down in the mould 2 between the flat board.And constitute magnetic loops with steel mould 2.Simultaneously mould 2 be again the resistance in the magnetic loop, when the magnetic line of force of alternating magnetic field passes mould 2, can form the vortex shape induced current mould 2 in, and the energy of this electric current converts heat energy to by mould 2 interior resistance again, makes mould 2 intensifications.In addition, in electromagnetism heated plate cover plate 7 with mould 2 on the corresponding position of sulfidic material, be provided with the detection mold temperature, and the temperature of detection be transferred to electronic control part and temperature control part divides 9 detector unit 8.Detector unit can be that thermal resistance constitutes.Detector unit 8 divides 9 to link to each other with Electronic Control and temperature control part, and send the temperature information that is detected to temperature display control unit 18, temperature display control unit 18 is controlled the heating-up temperature of electromagnetism heated plate according to the temperature that sets by the current flow that changes solenoid 11.Reload up and the electric energy of solenoid 11 becomes direct current by AC power after rectification, filter rectification, filtering, DC power supply is loaded on the power output device 14 simultaneously.And the pulse voltage that is produced by vibration, drive unit 15 makes the direct current that is added on the solenoid become alternating current by amplifying rear drive power output device 14.The pulse voltage that its oscillating part, drive unit 15 are produced generally is controlled at 23~36KHz, and the alternating current of thus obtained solenoid 11 also is 23~36KHz.In addition, the electromagnetism heated plate is by cover plate 7 and base plate 4, and solenoid more than 11 parts are constituted, and has special-purpose cavity 12 and the cover plate fixing hole 19 of placing solenoid 11 on base plate.Solenoid 11 is emitted in the cavity 12.And solenoid 11 is made up of magnetic core 6 and coil 5 two parts.Magnetic core is that Ferrite Material is made.Be shaped as " ∪ " word shape.Also have the aperture 13 that is used for plugging in magnetic core on cover plate 7, insert respectively in the aperture 13 on the cover plate 7 at the two poles of the earth of magnetic core 6, stretches out from base plate cavity 12 inside-outs, and a little less than the cover plate plane, 5 of coils are enclosed within one of magnetic core 6 and extremely go up.Cover plate adopts steel or stainless steel material to make, above a plurality of apertures that evenly distribute, the magnetic core of solenoid stretches out from below, is less than about cover plate plane 1-2mm during installation, the magnetic line of force in the magnetic core acts directly in the mould that is put on the cover plate.For guaranteeing the operate as normal of electromagnetism heated plate, also designed overvoltage, overcurrent protective device 16 in the circuit and do not had mould protective device 17.When supply voltage raises and solenoid output current when excessive, and, can quit work or reduce the output current of power output part automatically, guarantee working properly when on the solenoid during no mould.Brief introduction of work principle:
The 220V AC power is added on solenoid and the power output tube through becoming direct current after the rectification, produce the 23-36KHz pulse voltage by amplifying the output of rear drive power by oscillating part, make the direct current that is added in solenoid become the alternating current of 23-36KHz, and produce strong alternating magnetic field.This magnetic field produces magnetic loop by FERRITE CORE and steel mould, and in mould, form the vortex shape induced current, the energy of this electric current converts heat energy to by the resistance in the steel mould again, and the temperature of mould is raise rapidly, and rubber in the mould is vulcanized.Curing temperature is detected by the thermal resistance that is placed in the cover plate, and outputs to the temperature display control table and show, control.When temperature reached or be higher than design temperature, thermometer output control signal made the electric current of solenoid reduce, and curing temperature reduces.Otherwise, as when detecting temperature and being lower than design temperature, the electric current of solenoid increases, curing temperature raises.The curing temperature of controlling product thus is stable.Since temperature detecting point be installed in mould in the corresponding position of rubber, detect closely with the curing temperature of rubber with the temperature of control, so can guarantee the vulcanized quality of product preferably.

Claims (10)

1, a kind of heating means of vulcanizer, it is characterized in that: the mode of heating of described vulcanizer is the electromagnetism mode of heating, produce alternating magnetic field by the solenoid under the alternating current effect, this magnetic field produces the loop by magnetic core and steel mould, and in mould, forming the vortex shape induced current, the energy of this electric current changes into heat energy by the resistance in the steel mould again.
2, a kind of electromagnetic heater of vulcanizer, comprise upper flat plate (1), mould (2), following dull and stereotyped (3) and Electronic Control and temperature control part branch (9), it is characterized in that: upper flat plate (1) and down dull and stereotyped (3) are the electromagnetism heated plate, the electromagnetism heated plate produces alternating magnetic field by alternating current up and down, and in the mould (2) about the magnetic line of force in magnetic field directly acts on and is placed between the flat board, and constitute magnetic loop with steel mould, mould (2) is the resistance in the magnetic loop, the magnetic line of force of alternating magnetic field passes mould (2), in mould (2), form the vortex shape induced current, and this electric current energy convert heat energy to by the interior resistance of mould (2) again.
3, electromagnetic heater as claim 2 or 3 described a kind of vulcanizers, it is characterized in that: the electromagnetism heated plate is divided into cover plate (7) and base plate (4) and several parts of solenoid (11), on base plate (4), be useful on the cavity (12) of placing solenoid (11), solenoid (11) is emitted in the cavity (12), and solenoid (11) is made up of magnetic core (6) and coil (5) two parts, magnetic core (6) is " ∪ " word shape, insert respectively in the aperture (13) on the cover plate (7) at the two poles of the earth, stretch out from inside-out, coil (5) is nested with at one of magnetic core and extremely goes up.
4, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: in electromagnetism heated plate cover plate (7) with mould (2) on the corresponding position of sulfidic material, be provided with the detection mold temperature, and the temperature that detects is transferred to the detector unit (8) of electronic control part and temperature control part branch (9), detector unit (8) links to each other with Electronic Control and temperature control part branch (9), and sends the temperature information that is detected to temperature display control unit (18).
5, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: the heating and temperature control of electromagnetism heated plate is to realize by the current flow that changes solenoid (11), and control by electronic control part and temperature control part branch (9).
6, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: the electric current that is added on the solenoid (11) is an alternating current, the power supply of solenoid (11) becomes direct current by AC power and reloads up behind rectifying and wave-filtering, DC power supply is carried on the power output device (14) simultaneously, and the pulse voltage that is produced by vibration, drive unit (15) is by amplifying rear drive power output device (14), makes the direct current that is added in solenoid (11) become alternating current.
7, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: the pulse voltage that vibration, drive unit (15) are produced is 23-36KHz, and the alternating current that is added in solenoid (11) also is 23-36KHz.
8, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: described magnetic core (6) is FERRITE CORE.
9, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: in Electronic Control and temperature control part branch (9), be provided with over-voltage and over-current device (16) and no mould protective device (17).
10, as the electromagnetic heater of claim 2 or 3 described a kind of vulcanizers, it is characterized in that: described detector unit (8) constitutes for thermal resistance.
CN 01114495 2001-05-28 2001-05-28 Electromagnetic heating method and heater for sulfurizing machine Expired - Lifetime CN1262406C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01114495 CN1262406C (en) 2001-05-28 2001-05-28 Electromagnetic heating method and heater for sulfurizing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01114495 CN1262406C (en) 2001-05-28 2001-05-28 Electromagnetic heating method and heater for sulfurizing machine

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CN1362321A true CN1362321A (en) 2002-08-07
CN1262406C CN1262406C (en) 2006-07-05

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101394691B (en) * 2008-09-19 2011-05-04 江苏大学 Electromagnetic heating micro forming method and apparatus thereof
CN101404835B (en) * 2008-09-19 2011-05-04 江苏大学 Electromagnetic heating micro-forming method and apparatus used for non-magnetic workpiece
CN102497685A (en) * 2011-12-09 2012-06-13 东莞市龙正电子科技有限公司 Electromagnetic heater and manufacturing method thereof
CN103240825A (en) * 2013-05-28 2013-08-14 三角轮胎股份有限公司 Electromagnetic induction tire vulcanizing device
CN103286893A (en) * 2013-05-28 2013-09-11 三角轮胎股份有限公司 Vertical compression tire forming electromagnetic induction heating vulcanizing method and special internal mold thereof
CN103338539A (en) * 2013-06-23 2013-10-02 北京化工大学 Electromagnetic induction auxiliary heating device for drum-type vulcanizer
CN103538188A (en) * 2013-11-18 2014-01-29 三角(威海)华盛轮胎有限公司 Electromagnetic induction heating device for tire vulcanization outer mould
CN103957616A (en) * 2014-04-15 2014-07-30 雷中喜 Panel internal induction heating system driven by high-frequency induction heating
CN104443555A (en) * 2014-10-30 2015-03-25 张治雄 Gluing drying device of strip nail production line
CN104526932A (en) * 2014-12-12 2015-04-22 丰泽工程橡胶科技开发股份有限公司 High-speed vulcanization method of hysteresis permeation thermal field of laminated rubber bearing
CN105216182A (en) * 2015-10-10 2016-01-06 天津市禾厘油气技术有限公司 A kind of sebific duct curing system realizing automatically controlling
CN108262894A (en) * 2017-12-15 2018-07-10 益阳橡胶塑料机械集团有限公司 The maintaining method of vulcanizing press

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101404835B (en) * 2008-09-19 2011-05-04 江苏大学 Electromagnetic heating micro-forming method and apparatus used for non-magnetic workpiece
CN101394691B (en) * 2008-09-19 2011-05-04 江苏大学 Electromagnetic heating micro forming method and apparatus thereof
CN102497685A (en) * 2011-12-09 2012-06-13 东莞市龙正电子科技有限公司 Electromagnetic heater and manufacturing method thereof
CN103240825A (en) * 2013-05-28 2013-08-14 三角轮胎股份有限公司 Electromagnetic induction tire vulcanizing device
CN103286893A (en) * 2013-05-28 2013-09-11 三角轮胎股份有限公司 Vertical compression tire forming electromagnetic induction heating vulcanizing method and special internal mold thereof
CN103240825B (en) * 2013-05-28 2016-03-02 三角轮胎股份有限公司 Tire electromagnetic induction vulcanization plant
CN103338539B (en) * 2013-06-23 2015-07-08 北京化工大学 Electromagnetic induction auxiliary heating device for drum-type vulcanizer
CN103338539A (en) * 2013-06-23 2013-10-02 北京化工大学 Electromagnetic induction auxiliary heating device for drum-type vulcanizer
CN103538188A (en) * 2013-11-18 2014-01-29 三角(威海)华盛轮胎有限公司 Electromagnetic induction heating device for tire vulcanization outer mould
CN103957616A (en) * 2014-04-15 2014-07-30 雷中喜 Panel internal induction heating system driven by high-frequency induction heating
CN104443555A (en) * 2014-10-30 2015-03-25 张治雄 Gluing drying device of strip nail production line
CN104526932A (en) * 2014-12-12 2015-04-22 丰泽工程橡胶科技开发股份有限公司 High-speed vulcanization method of hysteresis permeation thermal field of laminated rubber bearing
CN105216182A (en) * 2015-10-10 2016-01-06 天津市禾厘油气技术有限公司 A kind of sebific duct curing system realizing automatically controlling
CN108262894A (en) * 2017-12-15 2018-07-10 益阳橡胶塑料机械集团有限公司 The maintaining method of vulcanizing press
CN108262894B (en) * 2017-12-15 2020-07-24 益阳橡胶塑料机械集团有限公司 Maintenance method of flat vulcanizing machine

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