CN108312398B - Electromagnetic vulcanization system - Google Patents
Electromagnetic vulcanization system Download PDFInfo
- Publication number
- CN108312398B CN108312398B CN201810356276.1A CN201810356276A CN108312398B CN 108312398 B CN108312398 B CN 108312398B CN 201810356276 A CN201810356276 A CN 201810356276A CN 108312398 B CN108312398 B CN 108312398B
- Authority
- CN
- China
- Prior art keywords
- high frequency
- die
- medium
- power supply
- electromagnetic
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/002—Component parts, details or accessories; Auxiliary operations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The invention provides an electromagnetic vulcanization system, which is characterized in that a vulcanization mold is improved, a magnetic conduction groove made of a magnetic conduction ceramic material is arranged in the vulcanization mold to accommodate an electrified coil, the electrified coil is electrically connected with an external medium-high frequency power supply, so that a medium-high frequency current is obtained to generate a first magnetic field to heat a steel plate, and the electrified coil is directly arranged in the vulcanization mold, and the generated magnetic field of the electrified coil is restrained in the vulcanization mold through the magnetic conduction ceramic material, so that an alternating magnetic field generated by the electrified coil can be prevented from acting on the mold, and the alternating magnetic field can be completely used for heating the steel plate. The upper heating plate and the lower heating plate of the vulcanizing machine can be heated quickly through heat conduction oil, and then heat is conducted to the upper die and the lower die of the vulcanizing die quickly. Therefore, the upper die, the middle die and the lower die of the vulcanizing die can be heated up rapidly and uniformly, so that the temperature of the steel plate in the vulcanizing die can be heated up rapidly and uniformly, and the vulcanizing efficiency and the vulcanizing quality of the rubber support are improved.
Description
Technical Field
The invention belongs to the technical field of rubber support vulcanization, and particularly relates to an electromagnetic vulcanization system.
Background
At present, a flat vulcanizing machine is adopted for vulcanizing the rubber support in the production of the rubber support, and the specific process is as follows: the method comprises the steps of placing a die with an upper die, a middle die and a lower die between an upper heating plate and a lower heating plate of a vulcanizing machine, placing a rubber support in the die, and arranging rubber and steel plates in a spaced lamination mode, wherein the steel plates are arranged between two adjacent layers of rubber. During heating, after the heat conduction oil is heated by the boiler, the heat conduction oil is conveyed to the flat vulcanizing machine by a pipeline, and an upper heating plate and a lower heating plate of the flat vulcanizing machine are heated in a heat conduction mode. And then the upper and lower dies of the die are heated by using an upper heating plate and a lower heating plate, the upper and lower dies conduct heat to the laminated steel plates in sequence, and the adjacent two steel plates can heat the rubber in the middle of the two steel plates. Under the above-mentioned application scenario, adopt the mode of heat conduction to heat rubber support and have following problem:
(1) Since rubber is a poor conductor of heat, in order to ensure the vulcanization quality of the rubber support, the vulcanization time of the rubber support needs to be prolonged, thereby causing long processing vulcanization time.
(2) Because rubber is a bad heat conductor, in the heat conduction process, the place close to the upper die and the lower die is heated first, the heating time is long, and the temperature is higher than the center position of the support, so that the support is unevenly vulcanized, in particular to a large-area support and a support with higher height, the place close to the upper die and the lower die is vulcanized, and the place far away from the upper die and the lower die is not vulcanized, so that the rubber under-sulfur and the rubber part of the support are separated from the lining steel plate, and the service life is low.
In order to solve the above problems, a device for vulcanizing a rubber support by adopting an electromagnetic heating mode is proposed in the prior art, specifically, an energizing coil communicated with a medium-high frequency generator is arranged at the outer side of a die, the medium-high frequency generator is started to be electrified with medium-high frequency current, and an alternating electromagnetic field generated by the energizing coil heats a laminated steel plate to provide heat for vulcanizing the rubber of the support. The inventor finds that the heating mode effect is not ideal after practical experiments, because the die is prepared from a metal material, the metal material has strong shielding effect on electromagnetic fields, and the alternating electromagnetic field generated by the electrified coil at the outer side of the die almost acts on the die and cannot enter the die, so that the rubber support in the die cannot be heated. Therefore, the electromagnetic heating method in the prior art is not feasible.
Disclosure of Invention
The invention aims to provide an electromagnetic vulcanization system which can truly realize the heating of a rubber support by electromagnetic energy.
To this end, the invention provides an electromagnetic vulcanisation system comprising a vulcanisation machine and a vulcanisation mould, the vulcanisation machine comprising a hot oil boiler, a transfer duct and a press, in which a heat transfer oil flows, wherein:
the hot oil boiler heats the heat conduction oil to a preset temperature;
the transmission pipeline is connected between the hot oil boiler and the upper heating plate and between the hot oil boiler and the lower heating plate, and the heat conduction oil with preset temperature is transmitted to the upper heating plate and the lower heating plate through the transmission pipeline to heat the upper heating plate and the lower heating plate;
the vulcanizing mold comprises an upper mold, a middle mold and a lower mold; the middle die is provided with a hollow structure suitable for placing a rubber support, a containing groove is formed in a set position of the inner wall of the middle die, and an opening of the containing groove faces the inside of the middle die and is arranged around the inner wall of the middle die; the upper die and the lower die are respectively arranged at two ports of the middle die and are tightly connected with the middle die; the magnetic conduction groove is prepared from a magnetic conduction ceramic material, is arranged in the accommodating groove and has an opening facing the inner part of the middle die; the lead is coiled in the magnetic conduction groove to form at least one electrified coil, and two ends of the lead pass through the magnetic conduction groove and the middle die and are electrically connected with a middle-high frequency power supply; the medium-high frequency power supply comprises a first sub-power supply, and the first sub-power supply inputs a first medium-high frequency current signal to the lead so that the electrified coil forms a first electromagnetic field for heating the edge of the steel plate; the sealing layer completely covers the magnetic conduction groove and the electrified coil, and the surface of the sealing layer and the inner wall of the middle die form a flat inner surface of the die;
the press comprises a lifting component and a top plate, wherein the top plate is fixed above the lifting component through a stand column; the upper heating plate is fixed on the bottom surface of the top plate, the lower heating plate is arranged at the top of the lifting part, and the vulcanizing mould is arranged on the lower heating plate; the vulcanizing mold is lifted up under the power provided by the lifting component, so that the upper mold is contacted with the top plate to generate pressure.
Optionally, in the electromagnetic vulcanization system, the medium-high frequency power supply is fixed on the inner side of the upright post.
Optionally, in the electromagnetic vulcanization system, the medium-high frequency power supply further includes a second sub-power supply, and the second sub-power supply inputs a second medium-high frequency current signal to the wire to enable the electrified coil to form a second electromagnetic field, the second medium-high frequency current signal has a phase difference with the first medium-high frequency current signal, and the second electromagnetic field is used for accelerating the speed of heat conduction from the edge of the steel plate to the center of the steel plate.
Optionally, in the electromagnetic vulcanization system, the medium-high frequency power supply further includes a third sub-power supply, and the third sub-power supply inputs a third medium-high frequency current signal to the wire to enable the electrified coil to form a third electromagnetic field, the third medium-high frequency current signal and the first medium-high frequency current signal have a frequency difference, and the first electromagnetic field and the third electromagnetic field are overlapped to realize uniform heating of different steel plates.
Optionally, in the electromagnetic vulcanization system, the vulcanization mold further includes a connector:
the connector is arranged on the side wall of the middle die;
the side walls of the magnetic conduction groove and the middle die are provided with wire passing holes which are suitable for the wires to pass through; the two ends of the wire pass through the wire passing hole and are electrically connected with the first end of the connector; sealant is poured between the wire and the wire through hole; the medium-high frequency power supply is electrically connected with the second end of the connector.
Optionally, in the electromagnetic vulcanization system, a bottom of the magnetic conduction groove is coated with a first adhesive layer, and the wire is fixed at the bottom of the magnetic conduction groove through the first adhesive layer.
Optionally, in the electromagnetic vulcanization system, the magnetic conduction groove is formed by seamlessly splicing a plurality of sub-grooves; the sub-grooves are made of magnetic conductive ceramic materials, and each sub-groove is fixed to the bottom of the containing groove through a second adhesive layer.
Optionally, in the electromagnetic vulcanization system, the accommodating groove is arranged at the middle position of the middle mold; the height of the magnetic conduction groove in the magnetic conduction device is 1/3-1/2 of the height of the middle die; the wire is a high-temperature-resistant medium-high frequency cable; the coil number of the lead in the magnetic conduction groove is 6-20.
Optionally, in the electromagnetic vulcanization system, the medium-high frequency power supply determines magnetic reactance of the electrified coil according to the output power and the output current, and determines a temperature field of the steel plate according to the magnetic reactance; and adjusting the frequency difference between the third electromagnetic field and the first electromagnetic field according to the temperature field.
Optionally, in the electromagnetic vulcanization system, the medium-high frequency power supply determines magnetic reactance of the electrified coil according to the output power and the output current, and determines a temperature field of the steel plate according to the magnetic reactance; and adjusting the phase difference between the second electromagnetic field and the first electromagnetic field according to the temperature field.
Compared with the prior art, the technical scheme provided by the invention has at least the following beneficial effects:
according to the electromagnetic vulcanization system provided by the invention, the vulcanization mold is improved, the magnetic conduction groove made of the magnetic conduction ceramic material is arranged in the vulcanization mold to accommodate the electrified coil, the electrified coil is electrically connected with the external medium-high frequency power supply, so that the medium-high frequency current is obtained to generate the first magnetic field to heat the steel plate, and the electrified coil is directly arranged in the vulcanization mold, and the generated magnetic field of the electrified coil is restrained in the vulcanization mold through the magnetic conduction ceramic material, so that the alternating magnetic field generated by the electrified coil can be prevented from acting on the mold, and the alternating magnetic field can be completely used for heating the steel plate. The upper heating plate and the lower heating plate of the vulcanizing machine can be heated quickly through heat conduction oil, and then heat is conducted to the upper die and the lower die of the vulcanizing die quickly. Therefore, the upper die, the middle die and the lower die of the vulcanizing die can be heated up rapidly and uniformly, so that the temperature of the steel plate in the vulcanizing die can be heated up rapidly and uniformly, and the vulcanizing efficiency and the vulcanizing quality of the rubber support are improved.
Drawings
FIG. 1 is a schematic diagram of an electromagnetic curing system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the distribution of a first electromagnetic field in a vulcanization mold according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the distribution of the first electromagnetic field and the second electromagnetic field in the vulcanization mold after superposition according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a distribution of the first electromagnetic field and the third electromagnetic field in the vulcanizing mold after superposition according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present invention, and are not to indicate or imply that the apparatus or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The embodiment provides an electromagnetic vulcanizing system, which comprises a vulcanizing machine and a vulcanizing mold, wherein the vulcanizing machine comprises a hot oil boiler 100, a transmission pipeline 101 and a press, and heat conduction oil flows in the hot oil boiler 100 and the transmission pipeline 101, wherein the hot oil boiler 100 heats the heat conduction oil to a preset temperature; the preset temperature is set according to the vulcanization temperature, and is determined according to a selection mode in the prior art. The transmission pipeline 101 is connected between the hot oil boiler 100 and the upper heating plate 105, and between the hot oil boiler 100 and the lower heating plate 104, and the heat conduction oil with preset temperature is transmitted to the positions of the upper heating plate 105 and the lower heating plate 104 through the transmission pipeline 101, so as to heat the upper heating plate 105 and the lower heating plate 104. In order to control the transport speed of the heat transfer oil in the transport pipe 101 for controlling the heating speed of the upper heating plate 105 and the lower heating plate 104, a pump may be provided between the transport pipe 101 and the hot oil boiler 100, which will not be described in detail here.
The vulcanizing mold comprises an upper mold 11, a middle mold 12 and a lower mold 13, wherein the middle mold 12 is of a hollow structure suitable for placing a rubber support 8, a containing groove is formed in a set position of the inner wall of the middle mold 12, and an opening of the containing groove faces the inner part of the middle mold and is arranged around the inner wall of the containing groove; the upper die 11 and the lower die 13 are respectively arranged at two ports of the middle die 12 and are tightly connected with the middle die 12. A magnetic conduction groove 2 is fixedly arranged in the accommodating groove, the magnetic conduction groove 2 is made of magnetic conduction ceramic materials, and an opening of the magnetic conduction groove 2 faces the inner part of the middle mold 12; the lead wire 4 is coiled in the magnetic conduction groove 2 to form at least one electrifying coil 3, and two ends of the lead wire pass through the magnetic conduction groove 2 and the middle die 12 and are electrically connected with the middle-high frequency power supply 300; the medium-high frequency power supply 300 comprises a first sub-power supply which inputs a first medium-high frequency current signal to the lead wire 4 so that the energizing coil 3 forms a first electromagnetic field for heating the edge of the steel plate; and the sealing layer 5 completely covers the magnetic conduction groove 2 and the electrified coil 3, and the surface of the sealing layer and the inner wall of the middle die 12 form a flat inner surface of the die.
The press comprises a lifting part 200 and a top plate 102, wherein the top plate 102 is fixed above the lifting part 200 through a column 103; the upper heating plate 105 is fixed on the bottom surface of the top plate 102, the lower heating plate 104 is arranged on the top of the lifting component 200, and the vulcanizing mold is arranged on the lower heating plate 104; the vulcanization mold is raised by the power provided by the lifting member 200, and the upper mold 11 is brought into contact with the top plate 105 to generate pressure. The lifting component 200 can be realized by adopting a hydraulic cylinder, a pump station is arranged on the outer side of the upright post 103, and the hydraulic cylinder provides supporting force for the vulcanization mold to drive the vulcanization mold to ascend or descend.
In the above scheme, through improving the vulcanization mold, set up the magnetic conduction groove 2 that is prepared by magnetic conduction ceramic material at the inside of vulcanization mold and hold the electric coil 3, electric coil 3 is connected with well high frequency power 300 electricity, thereby obtain well high frequency current and heat the steel sheet in the rubber support 8 with producing first magnetic field, because electric coil 3 directly set up in the inside of vulcanization mold and restrict the magnetic field that produces of electric coil at the inside of vulcanization mold through magnetic conduction ceramic material, can avoid the alternating magnetic field that electric coil 3 produced to act on the mold itself, can make the alternating magnetic field all be used for heating the steel sheet from this. While the upper heating plate 105 and the lower heating plate 104 of the vulcanizing machine can be heated rapidly by the heat transfer oil, which in turn transfers heat rapidly to the upper mold 11 and the lower mold 13 of the vulcanizing mold. Therefore, the upper die 11, the middle die 12 and the lower die 13 of the vulcanizing die can be heated up quickly and uniformly, so that the temperature of the steel plate in the vulcanizing die can be heated up quickly and uniformly, and the vulcanizing efficiency and the vulcanizing quality of the rubber support 8 are improved.
In the above scheme, the medium-high frequency power supply 300 may be set according to the field environment, and preferably may be fixed to the inner side of the upright 103, so that the operation thereof can be facilitated, and the upright 103 may protect the same.
Example 2
In the electromagnetic vulcanization system provided in this embodiment, as shown in fig. 2, the first electromagnetic field inside the vulcanization mold is in a direction perpendicular to the plane of the steel plate 7 after the energizing coil 3 is disposed in the circumferential direction outside the steel plate 7, and thus acts on the steel plate 7, the electric field direction is distributed along the circumferential direction of the steel plate 7. The distribution of magnetic lines and electric field lines is schematically depicted. After the first electromagnetic field acts on the steel plate 7, the edge of the steel plate near the position of the energizing coil 3 can be heated rapidly, and the width of the edge is about 10 mm. Since the steel plate 7 is made of metal, if the edges thereof are rapidly heated, the center thereof can also be rapidly heated by heat conduction of the metal.
Preferably, the medium-high frequency power supply 300 further includes a second sub-power supply that inputs a second medium-high frequency current signal to the wire to make the energizing coil 3 form a second electromagnetic field having a phase difference from the first medium-high frequency current signal, the second electromagnetic field being used to accelerate the speed of heat conduction from the edge of the steel plate to the center of the steel plate. That is, the second electromagnetic field and the first electromagnetic field generated by the energizing coil are superimposed to form an electromagnetic field distribution condition as shown in fig. 3. The distribution of the electromagnetic field determined from the view of the steel sheet 7 in plan view is shown in the figure. As shown in the figure, since the second electromagnetic field and the first electromagnetic field have a certain phase difference, the electric fields are superimposed to be a plurality of elliptical fields distributed on the surface of the steel plate 7 as shown in fig. 3; the magnetic field distribution is shown in fig. 3, in which the dots show the distribution of magnetic lines perpendicular to the surface of the steel plate 7, and the density of the dots represents the density of the magnetic lines (the drawing is only schematically shown). As shown, the electric field direction represents the direction of movement of electrons, and the electric field distribution shown in fig. 3 can carry electrons having a relatively high temperature at the edge of the steel plate 7 to the middle portion of the steel plate, and transfer heat to the middle portion of the steel plate. Therefore, by superimposing the second electromagnetic field and the first electromagnetic field, the speed of heat conduction from the edge of the steel plate to the center of the steel plate can be increased. Thereby improving the heating speed of the steel plate and enabling the temperature of the steel plate to be more uniform.
Because the heights of the different steel plates are different, the positions of the different steel plates in the first electromagnetic field are different, and therefore, the heating speeds of the different steel plates can be different, for example, the positions of the steel plates are just positioned at the wave crest of the first electromagnetic field, the heating speeds of the steel plates are inevitably faster, the positions of the steel plates are just positioned at the zero point of the first electromagnetic field, the heating speeds of the steel plates are slower, and although the first electromagnetic field is polled according to a certain period, the temperatures of the different steel plates are not necessarily identical. In order to reduce the temperature difference between the different steel plates as much as possible, the medium-high frequency power supply 300 further includes a third sub-power supply that inputs a third medium-high frequency current signal to the wire to make the energizing coil form a third electromagnetic field, the third medium-high frequency current signal having a frequency difference from the first medium-high frequency current signal, and the first electromagnetic field and the third electromagnetic field being overlapped to achieve uniform heating of the different steel plates. Because the third electromagnetic field and the first electromagnetic field have the same amplitude and phase, but only have a certain frequency difference. As shown in fig. 4, therefore, after the third electromagnetic field is superimposed with the first electromagnetic field, the position of the electromagnetic field peak can be adjusted, that is, the position of Bmax can be made to vary between different layers of the steel sheet 7.
In a specific implementation, the medium-high frequency power supply 300 can determine the output power and the output current in real time, and can determine the impedance of the energizing coil 3 connected with the medium-high frequency power supply 300 according to the output power and the output current, because the impedance of the energizing coil is related to the temperature field of the space where the energizing coil is located, the temperature field distribution situation in the middle mold corresponding to the energizing coil can be deduced by determining the impedance of the energizing coil in real time, and according to the temperature field distribution situation, the temperature situations of different positions of the same layer of steel plate and the temperature situations of different layers of steel plate can be determined, so that how the phase difference between the second electromagnetic field and the first electromagnetic field should be adjusted can be determined, and how the frequency difference between the third electromagnetic field and the first electromagnetic field should be adjusted can be determined.
That is, the medium-high frequency power supply 300 may determine the magnetic reactance of the energized coil according to the output power and the output current, and determine the temperature field of the steel plate according to the magnetic reactance; and adjusting the phase difference between the second electromagnetic field and the first electromagnetic field according to the temperature field. In the processor of the medium-high frequency power supply, a temperature adjustment threshold value, that is, a temperature difference between the edge of each layer of steel plate and the center of the steel plate cannot exceed the adjustment threshold value (for example, the adjustment threshold value is set to be 70 ℃), when the temperature difference between the edge of the steel plate and the center of the steel plate is smaller, the phase difference between the second electromagnetic field and the first electromagnetic field can be controlled to be smaller, and mainly the edge of the steel plate is heated. When the temperature difference between the edge of the steel plate and the center of the steel plate is close to 70 ℃, the phase difference between the second electromagnetic field and the first electromagnetic field is increased, and the operation of accelerating the transition of heat from the edge of the steel plate to the center of the steel plate is mainly performed.
In addition, the medium-high frequency power supply 300 determines the magnetic reactance of the energizing coil according to the output power and the output current, and determines the temperature field of the steel plate according to the magnetic reactance; and adjusting the frequency difference between the third electromagnetic field and the first electromagnetic field according to the temperature field. That is, according to the distribution condition of the temperature field, determining which layer of steel plate has lower temperature, adjusting the peak value of the electromagnetic field to be positioned at the position of the layer of steel plate so as to improve the heating speed of the layer of steel plate and make the heating speed reach balance with the temperature of other layers of steel plates as soon as possible.
In the above scheme, the magnetic conduction groove 2 in the accommodating groove is arranged at the middle position of the inner wall of the middle mold 12, the height of the magnetic conduction groove 2 can be 1/3-1/2 of the height of the middle mold 12, the symmetrical structure can simplify the processing technology of the mold, and on the other hand, the magnetic conduction groove 2 is positioned at the middle position of the middle mold 12, so that the electromagnetic field distribution space influenced by the magnetic conduction groove 2 is more concentrated. The height of the magnetic conduction groove 2 can be adaptively selected according to the height of the rubber support, so that the electromagnetic field distribution space can cover the whole height of the rubber support, the height of the magnetic conduction groove 2 can be 1/3-1/2 of the height of the middle mold, and the electromagnetic field distribution space can basically cover the whole height of the inner part of the middle mold in height.
Further, the conducting wire 4 is a high-temperature-resistant medium-high frequency cable, and can be realized by ordering the existing products. In general, the rubber support in the vulcanizing mold needs to be heated to about 140 ℃, so that the wire 4 is directly selected to have high temperature resistance, and the working stability of an electrified coil can be ensured. In addition, the coil number of the lead 4 in the magnetic conduction groove 2 can be adjusted according to the height of the rubber support, and preferably, the coil number of the lead 4 in the magnetic conduction groove 2 is 6-20.
In the above scheme, the sealing glue layer 5 can be realized by epoxy resin glue, and the thickness of the sealing glue layer can be 2-5mm. In actual implementation, the sealing glue layer can be slightly thicker when being injected, and then the inner surface of the vulcanizing mold is integrally machined through lathe processing, so that the smooth inner surface can be obtained.
In addition, the magnetic conductive ceramic material is realized by doping a certain amount of magnetic conductive material inside the ceramic material. The price of the existing magnetic conductive ceramic materials in the market is relatively high, so that the cost can be saved, the electromagnetic field distribution which is as large as possible is realized by adopting the magnetic conductive ceramic materials as few as possible, the notch of the magnetic conductive groove 2 can be inclined to the outer side of the magnetic conductive groove 2, namely, the opening of the magnetic conductive groove 2 is outwards opened, the electromagnetic field distribution can cover a larger space range, and therefore, the heating of a higher rubber support can be realized by adopting the smaller magnetic conductive groove 3. By the design, the use amount of the magnetic conductive ceramic material can be reduced, the cost is reduced, the specific inclination angle can be set according to the height of the actual heated component, and the angle is preferably between 90 degrees and 135 degrees.
Further, a first adhesive layer is coated on the bottom of the magnetic conduction groove 2, and the lead 4 is fixed on the bottom of the magnetic conduction groove 2 through the first adhesive layer. The first adhesive layer is made of epoxy resin glue, so that the first adhesive layer is as thin as possible to reduce cost, and the lead 4 can be ensured to be fixed at the bottom of the magnetic conduction groove 2.
In some embodiments, the magnetic conductive slot 3 may be an integrally formed structure, and in other examples, it may be implemented by the following manner: the sub grooves prepared from a plurality of magnetic conductive ceramic materials are spliced in a seamless manner; each sub-groove is fixed at the bottom of the containing groove through a second adhesive layer. The second adhesive layer may be made of epoxy resin, and in order to reduce the cost, the second adhesive layer may be as thin as possible, so long as the sub-grooves can be secured to the bottom of the receiving groove. The method for splicing the sub-grooves to obtain the magnetic conduction groove 2 can improve the suitability of the magnetic conduction groove 2, and the magnetic conduction groove 2 matched with the sub-grooves can be obtained simply by increasing or decreasing the sub-grooves for vulcanization molds with different shapes and different sizes.
Further preferably, a connector 6 is arranged on the side wall of the middle die; the two ends of the lead 4 pass through the magnetic conduction groove 2 and the middle die and are electrically connected with the first end of the connector 6; the medium-high frequency power supply is electrically connected to the second end of the connector 6. The connector 6 can be realized by selecting an industrial waterproof connector, and can be manufactured by manufacturers such as Zhengtai electrical appliances, de Li xi electrical appliances and the like.
Wire passing holes are formed in the bottom of the magnetic conduction groove 2 and the side wall of the hollow cavity 11; the wire inlet end and the wire outlet end of the wire 4 pass through the wire passing hole and then are connected with the first end of the connector 6; sealant is poured between the lead 4 and the wire through hole, so that the overall tightness of the die can be realized.
Through experiments, the device in the embodiment and the vulcanizing system in the prior art are adopted to vulcanize the rubber support with the diameter of 800mm and the height of 250mm, under the condition that the vulcanizing temperature is 140 ℃, 11 hours are needed in the scheme in the prior art, and only 4 hours are needed in the scheme in the embodiment, so that the vulcanizing time of the rubber support is greatly shortened.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An electromagnetic curing system comprising a curing press and a curing die, the curing press comprising a hot oil boiler, a transfer line, and a press, wherein a heat transfer oil flows in the hot oil boiler and the transfer line, wherein:
the hot oil boiler heats the heat conduction oil to a preset temperature;
the transmission pipeline is connected between the hot oil boiler and the upper heating plate and between the hot oil boiler and the lower heating plate, and the heat conduction oil with preset temperature is transmitted to the upper heating plate and the lower heating plate through the transmission pipeline to heat the upper heating plate and the lower heating plate;
the vulcanizing mold comprises an upper mold, a middle mold and a lower mold; the middle die is provided with a hollow structure suitable for placing a rubber support, a containing groove is formed in a set position of the inner wall of the middle die, and an opening of the containing groove faces the inside of the middle die and is arranged around the inner wall of the middle die; the upper die and the lower die are respectively arranged at two ports of the middle die and are tightly connected with the middle die; the magnetic conduction groove is prepared from a magnetic conduction ceramic material, is arranged in the accommodating groove and has an opening facing the inner part of the middle die; the lead is coiled in the magnetic conduction groove to form at least one electrified coil, and two ends of the lead pass through the magnetic conduction groove and the middle die and are electrically connected with a middle-high frequency power supply; the medium-high frequency power supply comprises a first sub-power supply, and the first sub-power supply inputs a first medium-high frequency current signal to the lead so that the electrified coil forms a first electromagnetic field for heating the edge of the steel plate; the sealing layer completely covers the magnetic conduction groove and the electrified coil, and the surface of the sealing layer and the inner wall of the middle die form a flat inner surface of the die;
the press comprises a lifting component and a top plate, wherein the top plate is fixed above the lifting component through a stand column; the upper heating plate is fixed on the bottom surface of the top plate, the lower heating plate is arranged at the top of the lifting part, and the vulcanizing mould is arranged on the lower heating plate; the vulcanization mold is lifted under the power provided by the lifting component, so that the upper mold is contacted with the top plate to generate pressure;
the medium-high frequency power supply further comprises a second sub-power supply, the second sub-power supply inputs a second medium-high frequency current signal to the lead so that the electrified coil forms a second electromagnetic field, the second medium-high frequency current signal and the first medium-high frequency current signal have a phase difference, and the second electromagnetic field is used for accelerating the speed of heat conduction from the edge of the steel plate to the center of the steel plate;
the medium-high frequency power supply further comprises a third sub-power supply, the third sub-power supply inputs a third medium-high frequency current signal to the lead so that the electrified coil forms a third electromagnetic field, the third medium-high frequency current signal and the first medium-high frequency current signal have a frequency difference, and the first electromagnetic field and the third electromagnetic field are overlapped to realize uniform heating of different steel plates.
2. An electromagnetic curing system as set forth in claim 1, wherein:
the middle-high frequency power supply is fixed on the inner side of the upright post.
3. The electromagnetic curing system of claim 2, wherein said curing mold further comprises a connector:
the connector is arranged on the side wall of the middle die;
the side walls of the magnetic conduction groove and the middle die are provided with wire passing holes which are suitable for the wires to pass through; the two ends of the wire pass through the wire passing hole and are electrically connected with the first end of the connector; sealant is poured between the wire and the wire through hole; the medium-high frequency power supply is electrically connected with the second end of the connector.
4. An electromagnetic vulcanisation system according to any of the claims 1-3, wherein:
the bottom of the magnetic conduction groove is coated with a first adhesive layer, and the lead is fixed at the bottom of the magnetic conduction groove through the first adhesive layer.
5. The electromagnetic curing system of claim 4, wherein:
the magnetic conduction groove is formed by seamlessly splicing a plurality of sub-grooves; the sub-grooves are made of magnetic conductive ceramic materials, and each sub-groove is fixed to the bottom of the containing groove through a second adhesive layer.
6. An electromagnetic curing system as set forth in claim 5, wherein:
the accommodating groove is arranged at the middle position of the middle die; the height of the magnetic conduction groove in the cable is 1/3-1/2 of the height of the middle mould, and the conducting wire is a high-temperature-resistant middle-high-frequency cable; the coil number of the lead in the magnetic conduction groove is 6-20.
7. The electromagnetic curing system of claim 6, wherein:
the medium-high frequency power supply determines the magnetic reactance of the electrified coil according to the output power and the output current, and determines the temperature field of the steel plate according to the magnetic reactance; and adjusting the frequency difference between the third electromagnetic field and the first electromagnetic field according to the temperature field.
8. The electromagnetic curing system of claim 7, wherein:
the medium-high frequency power supply determines the magnetic reactance of the electrified coil according to the output power and the output current, and determines the temperature field of the steel plate according to the magnetic reactance; and adjusting the phase difference between the second electromagnetic field and the first electromagnetic field according to the temperature field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356276.1A CN108312398B (en) | 2018-04-19 | 2018-04-19 | Electromagnetic vulcanization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356276.1A CN108312398B (en) | 2018-04-19 | 2018-04-19 | Electromagnetic vulcanization system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108312398A CN108312398A (en) | 2018-07-24 |
| CN108312398B true CN108312398B (en) | 2023-08-15 |
Family
ID=62894439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810356276.1A Active CN108312398B (en) | 2018-04-19 | 2018-04-19 | Electromagnetic vulcanization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108312398B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110421761B (en) * | 2019-07-24 | 2021-05-25 | 青岛科技大学 | High-frequency dielectric polarization heating equipment and process for vulcanizing flat rubber |
| CN110757691A (en) * | 2019-11-22 | 2020-02-07 | 无锡锦和科技有限公司 | Inside and outside synchronous heating formula shock insulation rubber support mould |
| CN112693048A (en) * | 2020-12-28 | 2021-04-23 | 无锡锦和科技有限公司 | Heating vulcanization mould of laminated rubber support |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-04-19 CN CN201810356276.1A patent/CN108312398B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108312398A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108407154B (en) | Rubber support vulcanizing device | |
| CN108312398B (en) | Electromagnetic vulcanization system | |
| KR101006299B1 (en) | Heating unit, tire heating device, and tire mold modifying method | |
| US20110057357A1 (en) | Device for converting materials using induction heating and deformable compacting means | |
| KR101420762B1 (en) | Mould assembly with a heating device | |
| CN102310261A (en) | Vibration welding method and device that eddy-current heating is auxiliary | |
| CN206301895U (en) | Heater and hot-press equipment | |
| CN208337924U (en) | Electromagnetic heating mold | |
| JP2019514757A (en) | Method and apparatus for casting and solidifying fiber preforms | |
| KR20210012330A (en) | Heater for sealing secondary battery | |
| CN102497685A (en) | Electromagnetic heater and manufacturing method thereof | |
| CN117117275A (en) | Flow battery pile packaging method and pile thereof | |
| CN208681882U (en) | Rubber support vulcanization plant | |
| CN115157501B (en) | Matrix electromagnetic induction heating device for conveyer belt joint vulcanizing machine | |
| MX2010010951A (en) | Out-of-phase electrical welder and process. | |
| CN208323945U (en) | Electromagnetism curing system | |
| CN108601128A (en) | Electromagnetic heating mold | |
| CN214926297U (en) | Heating vulcanization mould of laminated rubber support | |
| CN110461051B (en) | Permanent magnet induction heating device and method | |
| CN211305184U (en) | Automatic part auto-induction welding device for production | |
| CN211074399U (en) | Vulcanizer hot plate based on electromagnetic heating | |
| KR102265236B1 (en) | Device for Manufacturing of Battery Cell Comprising Sealing Tool of Induction Heating Type | |
| JP2006127824A (en) | Manufacturing device of secondary battery and manufacturing method of the same | |
| EP3008972B1 (en) | Miniaturized head for induction welding of printed circuits | |
| CN211481503U (en) | Sleeve high-temperature curing variable-frequency electric heating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |