WO2022137852A1 - Dispositif de chauffage pour noyau de fer stratifié - Google Patents

Dispositif de chauffage pour noyau de fer stratifié Download PDF

Info

Publication number
WO2022137852A1
WO2022137852A1 PCT/JP2021/041104 JP2021041104W WO2022137852A1 WO 2022137852 A1 WO2022137852 A1 WO 2022137852A1 JP 2021041104 W JP2021041104 W JP 2021041104W WO 2022137852 A1 WO2022137852 A1 WO 2022137852A1
Authority
WO
WIPO (PCT)
Prior art keywords
iron core
ferrite
plate
heating device
center
Prior art date
Application number
PCT/JP2021/041104
Other languages
English (en)
Japanese (ja)
Inventor
英一 黒崎
侑馬 伊藤
典央 川見
Original Assignee
田中精密工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 田中精密工業株式会社 filed Critical 田中精密工業株式会社
Publication of WO2022137852A1 publication Critical patent/WO2022137852A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications

Definitions

  • the present invention relates to a heating device for a laminated iron core.
  • the laminated iron core is used for motors, etc.
  • the laminated iron core is obtained by adhering the iron core to the iron core. This adhesion is made by heat-treating the adhesive.
  • Various heating devices are known for this purpose (see, for example, Patent Document 1 (FIG. 3)).
  • FIG. 14 is a diagram illustrating a basic configuration of a conventional heating device.
  • the heating device 100 includes a base 101, a center guide 102 extending upward from the base 101, and a base plate 103 and a lower plate 104 mounted on the base 101 so as to surround the center guide 102.
  • the induction heating coil 105 arranged so as to surround the base plate 103, the lower plate 104 and the center guide 102, and the top plate 107 and the upper plate 108 suspended by the cylinder 106.
  • the center guide 102 serves to guide the iron core 109. Further, the center guide 102 plays a role of preventing the iron core 109 from moving in the direction perpendicular to the axis of the center guide 102 (the left-right direction in the drawing).
  • the cylinder 106 is extended to lower the top plate 107 and the upper plate 108, and the iron core 109 is pressed by the upper plate 108.
  • Thermosetting resins are widely used as adhesives.
  • the thermosetting resin is fluidized by heating and then cured. When the energization is stopped, the iron core 109 is naturally cooled. The iron core 109 is removed from the center guide 102.
  • FIG. 15 is a plan view illustrating a problem of the conventional heating device.
  • the iron core 109 has a tooth portion 112 on the inner circumference of the donut plate portion 111 and an ear portion 113 on the outer periphery in addition to a simple perforated plate (doughnut plate). Shaped ones are also put to practical use.
  • the iron core 109 having such a shape is heated by the induction heating coil 105.
  • the selvage portion 113 is closer to the induction heating coil 105 than the donut plate portion 111.
  • induction heating the magnetic flux density at a short distance is high, and the magnetic flux density at a distant place is low. The higher the magnetic flux density, the stronger the heating.
  • the mass of the donut plate 111 is large, and the mass of the selvage 113 is small. The temperature of the part with a small mass rises more than the part with a large mass.
  • the temperature of the top of the selvage 113 is the temperature of the top of the selvage T11
  • the temperature of the base (hem) of the selvage 113 is the temperature of the selvage selvage 113
  • the temperature of the outer periphery of the donut plate 111 is the temperature of the donut plate T13. ..
  • the donut plate portion 111 has the lowest temperature. While it is required to shorten the production time, it is desired to promote the temperature rise of the temperature T13 of the donut plate portion and shorten the required heating time.
  • the iron core 18 has a donut plate portion 41 having a central hole 38 and an ear portion 42 provided on the outer periphery of the donut plate portion 41 at a pitch of 120 °.
  • a tooth portion 43 is provided on the inner circumference of the donut plate portion 41.
  • the suppression ferrite 44 is arranged inside the induction heating coil 19 surrounding the iron core 18 and in the vicinity of the selvage portion 42.
  • FIG. 1 (b) is a sectional view taken along line bb of FIG. 1 (a).
  • a part of the magnetic flux 45 passes through the suppression ferrite 44.
  • Another part of the magnetic flux 46 passes through the selvage portion 42, and yet another magnetic flux 47 passes through the donut plate portion 41. Since the magnetic flux 45 that may be directed to the selvage portion 42 is directed to the selvagement ferrite 44, the heating of the selvage portion 42 is suppressed.
  • FIG. 1 (c) is an enlarged view of a main part of FIG. 1 (a).
  • the temperature of the top of the selvage portion 42 is the temperature of the top of the selvage portion T1
  • the temperature of the base (hem) of the selvage portion 42 is the temperature of the selvage portion base T2
  • the outer circumference of the donut plate portion 41 Let the temperature of the donut plate be the temperature T3 of the donut plate. The temperature curves of the temperatures T1, T2, and T3 will be described with reference to FIG.
  • the heating time t1 was 50 seconds, and the temperature T3 of the donut plate portion reached 180 ° C. At this point, the temperature T1 at the top of the ear was 340 ° C, which was much lower than before. The suppressing effect of the suppressing ferrite 44 is sufficiently exhibited.
  • the suppressing effect of the suppressing ferrite 44 also appeared at the base of the selvage portion 42, and as a result, the temperature T2 of the selvage portion base was about 160 ° C., which was lower than the conventional one. Further heat until this reaches 180 ° C. As a result, the heating time t2 was 60 seconds and the temperature T2 was 180 ° C. Since the heating time t2 is extended, the productivity is lowered and the consumption of electric energy is increased, so that the object of the present invention cannot be achieved.
  • the present inventors considered that it would be better to weaken the inhibitory effect, and took further measures as described below.
  • the iron core 18 was rotated by 60 ° around the center point 48 of the iron core 18. Since the selvage portion 42 is separated from the suppression ferrite 44, the suppression effect of the suppression ferrite 44 is weakened.
  • the temperature of the top of the selvage 42 is the temperature T1 of the top of the ear
  • the temperature of the base (hem) of the selvage 42 is the temperature T2 of the base of the ear
  • the outer circumference of the donut plate 41 Let the temperature of the donut plate be the temperature T3 of the donut plate. The temperature curves of the temperatures T1, T2, and T3 will be described with reference to FIG.
  • the temperature T1 at the top of the selvage was 390 ° C.
  • the temperature T2 at the base of the selvage reached 180 ° C. in 49 seconds. It was 11 seconds shorter than in FIG.
  • the heating time was 51 seconds. It was 1 second longer than in FIG.
  • the required heating time was 60 seconds as shown in FIG.
  • the required heating time is shortened to 51 seconds, and productivity can be significantly improved.
  • FIG. 3A a selvage center line 49 passing through the center point 48 of the iron core 18 and passing through the center of the selvage portion 42, and a ferrite center line 51 passing through the center point 48 of the iron core and passing through the center of the suppression ferrite 44.
  • the angle formed by is called the intersection angle ⁇ .
  • the crossing angle ⁇ was 0, and in the form of FIG. 3A, the crossing angle ⁇ was 60 °. This 60 ° corresponds to half (1/2) of the arrangement pitch 120 ° of the three suppression ferrites 44.
  • the time for the selvage base to reach 180 ° C. and the time for the donut plate to reach 180 ° C. were investigated.
  • the later arrival time is the required heating time.
  • the crossing angle ⁇ is set to 0 °, as shown in FIG. 2, the time for the selvage base temperature to reach 180 ° is 60 seconds, and the time for the donut plate temperature to reach 180 ° is 50 seconds.
  • the required heating time was 60 seconds.
  • the crossing angle ⁇ When the crossing angle ⁇ is set to 25 °, the time for the selvage base to reach 180 ° is 55 seconds, the time for the donut plate temperature to reach 180 ° is 50 seconds, and the required heating time is 55. It was a second. When the crossing angle ⁇ is set to 45 °, the time for the selvage base temperature to reach 180 ° is 51.5 seconds, and the time for the donut plate temperature to reach 180 ° is 50.5 seconds. The heating time was 51.5 seconds. When the crossing angle ⁇ is 60 °, as shown in FIG. 4, the time for the temperature at the base of the ear to reach 180 ° is 49 seconds, and the time for the temperature at the donut plate to reach 180 ° is 51 seconds. The required heating time was 51 seconds.
  • the crossing angle of 45 ° is comparable to 60 °.
  • the crossing angle is 25 °, it is 4 seconds longer than 60 °, and when the crossing angle is 0 °, it is 9 seconds longer than 60 °. If the crossing angle is less than 45 °, the required heating time becomes long, which is difficult in terms of productivity.
  • the intersection angle ⁇ is set to 60 ° and to set it to 60 ° ⁇ 15 °, that is, in the range of 45 ° to 75 °. ..
  • the present invention completed based on the above findings is as follows.
  • the invention according to claim 1 is a heating device for a laminated iron core, which treats the laminated iron core as a processing target and heat-treats the adhesive applied to the iron core.
  • the iron core has a donut plate portion and an ear portion locally protruding from the outer periphery of the donut plate portion.
  • the heating device includes an induction heating coil that heats the iron core and suppresses the magnetic flux acting on the selvage portion.
  • the intersection angle determined by the angle between the selvage center line passing through the center point of the iron core and passing through the center of the selvage core and the ferrite center line passing through the center point of the iron core and passing through the center of the suppression ferrite is 60 °. Is set to.
  • the invention according to claim 2 is a heating device for a laminated iron core, which treats the laminated iron core as a processing target and heat-treats the adhesive applied to the iron core.
  • the iron core has a donut plate portion and an ear portion locally protruding from the outer periphery of the donut plate portion.
  • the heating device includes an induction heating coil that heats the iron core and suppresses the magnetic flux acting on the selvage portion.
  • the crossing angle determined by the angle between the selvage center line passing through the center point of the iron core and passing through the center of the selvage core and the ferrite center line passing through the center point of the iron core and passing through the center of the suppression ferrite is 45 °. It is set in the range of ⁇ 75 °.
  • the invention according to claim 3 is preferably the heating device for the laminated iron core according to claim 1 or 2. It is provided with a base plate, a lower plate to be placed on the base plate, an upper plate to be placed on the iron core on the lower plate, and a top plate to be placed on the upper plate.
  • a base plate Made of stainless steel
  • the lower plate and the upper plate are made of carbon steel that allows magnetic flux to pass through. It includes a tubular ferrite that surrounds the induction heating coil, a lower ferrite that extends from the lower end of the tubular ferrite to the lower plate, and an upper ferrite that extends from the upper end of the tubular ferrite to the upper plate.
  • the invention according to claim 4 is preferably the heating device for the laminated iron core according to claim 1 or 2.
  • This heating device is provided with a center guide inserted into a central hole provided in the iron core, and this center guide is an outer diameter variable chuck mechanism whose outer diameter can be changed.
  • the variable outer diameter chuck mechanism has three claws arranged at a pitch of 120 ° in a plan view. Two of the claws are fixed claws, and the remaining one is a movable claw driven by an air cylinder.
  • the heating device includes an induction heating coil that surrounds the iron core and heats the iron core, and also includes an inhibitory ferrite that suppresses the magnetic flux acting on the selvage portion of the iron core. It was placed at a position sufficiently distant from the part. By sufficiently separating them, the suppressing effect was weakened, the delay in raising the temperature of the selvage base was eliminated, and the required heating time could be shortened.
  • the intersection angle is set to 60 °. Since the crossing angle is uniquely determined, it is possible to shorten the examination time and the design time related to the arrangement of the suppression ferrite.
  • the heating device includes an induction heating coil that surrounds the iron core and heats the iron core, and also includes a suppressive ferrite that suppresses the magnetic flux acting on the selvage portion of the iron core.
  • This inhibitory ferrite was placed at a position sufficiently distant from the selvage. By sufficiently separating them, the suppressing effect was weakened, the delay in raising the temperature of the selvage base was eliminated, and the required heating time could be shortened.
  • the intersection angle is set in the range of 45 ° to 75 °. Since the intersection angle is wide, the degree of freedom in design regarding the arrangement of the suppression ferrite is increased.
  • the induction heating coil surrounding the iron core is surrounded by a tubular ferrite.
  • a part of the magnetic flux generated by the induction heating coil is promoted by the tubular ferrite.
  • a part of the magnetic flux extending from the tubular ferrite is cut off by the base plate or the top plate. This cutoff includes the fact that magnetic flux is difficult to pass through (the same applies hereinafter).
  • the lower ferrite and the upper ferrite are attached to the tubular ferrite.
  • the lower ferrite and the upper ferrite pass magnetic flux well.
  • the magnetic flux extending from the tubular ferrite is the lower ferrite and the upper ferrite, and is induced by the lower ferrite and the upper ferrite and is used for heating the iron core.
  • the outer diameter of the center guide can be changed.
  • reduce the outer diameter Even if the temperature of the center guide rises, there is no problem in setting the iron core.
  • removing the iron core from the center guide reduce the outer diameter. Even if the temperature of the center guide rises, there is no problem in removing the iron core.
  • the main part of the outer diameter variable chuck mechanism is composed of two fixed claws and one movable claw. Compared to the structure in which all three claws are made variable, if only one is made a movable claw, the device can be simplified and the equipment cost can be reduced.
  • FIG. 9-9 is a sectional view taken along line 9-9 of FIG.
  • FIG. 7 is a cross-sectional view taken along the line 10-10 of FIG. It is a figure explaining the operation of the outer diameter variable chuck mechanism.
  • It is a figure explaining the magnetic flux of the modification example (a) is the figure which shows the comparative example, (b) is the figure which shows the Example. It is a figure explaining the basic structure of the conventional heating apparatus. It is a figure explaining the shape of an iron core.
  • the heating device 10 for the laminated iron core includes a base plate 13, a lower plate 14 mounted on the base plate 13, an upper plate 15 arranged above the lower plate 14, and the upper plate 15.
  • the top plate 16 mounted on the top plate 16, the pressing mechanism 17 for applying a downward force to the top plate 16, the induction heating coil 19 arranged so as to surround the iron core 18, and the suppression arranged inside the induction heating coil 19. It includes a ferrite 44 and a center guide 24 for positioning the iron core 18 sandwiched between the lower plate 14 and the upper plate 15.
  • the iron core 18 is a silicon steel plate (electromagnetic steel plate) having a thickness of 0.2 to 0.5 mm, and is a perforated plate having an inner diameter of 50 to 150 mm and an outer diameter of 200 to 250 mm.
  • An adhesive with a thickness of several ⁇ m is locally (or entirely) applied to the upper and lower surfaces of the iron core 18 punched from the coil of the silicon steel plate by pressing, and a predetermined number of perforated plates are piled (laminated). Then, for example, a laminated iron core having a height of 50 to 150 mm can be obtained.
  • the adhesive may be a thermosetting resin that is fluidized by heating and cured at about 180 ° C., for example, an epoxy resin, an acrylic resin, or a silicone rubber resin, and can be arbitrarily selected.
  • the lower plate 14 and the upper plate 15 are carbon steel plates.
  • the lower plate 14 and the upper plate 15 secure a gap ⁇ 1 of about several mm between the lower plate 14 and the center guide 24. This gap ⁇ 1 blocks or suppresses heat transfer from the lower plate 14 and the upper plate 15 to the center guide 24.
  • the center guide 24 is a cylinder or a cylinder standing on the base plate 13. Cylinders have the advantage of high rigidity, but they are heavy. A cylinder is recommended because it can reduce the weight.
  • a gap ⁇ 2 is secured between the inner circumference of the iron core 18 and the outer circumference of the center guide 24.
  • This gap ⁇ 2 is set to 10 to 20 ⁇ m.
  • ⁇ 2 may be set in the vicinity of 20 ⁇ m, and when the thermal expansion is small, ⁇ 2 may be set in the vicinity of 10 ⁇ m.
  • the iron core 18 can be easily set in the center guide 24, and the iron core 18 can be removed from the center guide 24.
  • FIG. 6 shows an example of modification of the heating device 10 for the laminated iron core.
  • a refrigerant passage 25 is built in the center guide 24, and a refrigerant such as water flows through the refrigerant passage 25.
  • a refrigerant such as water flows through the refrigerant passage 25.
  • the gap ⁇ 2 can be set to 5 to 10 ⁇ m. Since the gap ⁇ 2 is small, the lateral movement of the iron core 18 is small, and the product quality can be improved.
  • the gap ⁇ 2 is 0. This is because if the gap ⁇ 2 is 0, the lateral movement of the iron core 18 can be completely suppressed.
  • the technique that can make the gap ⁇ 2 0 will be described below.
  • the heating device 10 for the laminated iron core is mounted on the gantry base 11, the gantry base 12 mounted on the gantry base 11, the base plate 13 mounted on the gantry base 12, and the base plate 13.
  • the center guide 24 is a variable outer diameter chuck mechanism 30.
  • the outer diameter variable chuck mechanism 30 extends upward from, for example, a rail 31 mounted on the gantry base 11, a slider 32 movably fitted to the rail 31, an air cylinder 33 for driving the slider 32, and the slider 32.
  • a columnar movable claw 34 that penetrates a gate-shaped base 12, a base plate 13, a lower plate 14, an iron core 18, and an upper plate 15, and a lower plate 14, an iron core that is arranged parallel to the movable claw 34 and extends upward from the base plate 13. It consists of a columnar fixing claw 35 penetrating the 18 and the upper plate 15.
  • variable outer diameter chuck mechanism 30 has three claws 34, 35, 35 arranged at a pitch of 120 ° in a plan view, and two of the claws are fixed claws 35, 35. The remaining one is a movable claw 34 driven by an air cylinder 33.
  • the movable claw 34 is provided so that the right positioning piece 52R protrudes.
  • a positioning block 53 is arranged at a position line-symmetrical with the movable claw 34 and between the pair of fixed claws 35, and the left positioning piece 52L is provided so as to protrude from the positioning block 53. That is, the left positioning piece 52L and the right positioning piece 52R are arranged on the same line in opposite directions.
  • the left positioning piece 52L and the right positioning piece 52R fit into the tooth portion 43 of the iron core 18 and play a role of aligning the positions of the selvage portions 42. Since the other components are the same as those in FIG. 3 (a), the reference numerals in FIG. 3 (a) are diverted, and detailed explanations are given in a small amount.
  • a rail 31 is mounted on the gantry base 11
  • a slider 32 is fitted on the rail 31 so as to be movable in the front and back directions of the drawing, and a movable claw 34 is fixed to the slider 32 by a bolt or the like.
  • a steel ball 36 is interposed between the rail 31 and the slider 32.
  • the coefficient of friction between the rail 31 and the slider 32 is significantly reduced, and the slider 32 and the movable claw 34 move smoothly without shaking.
  • one rail 31 may be replaced with a left guide bar and a right guide bar, and the slider 32 may be guided by these left guide bars and right guide bars. Therefore, the structure of FIG. 10 may be changed as appropriate, and the point is that the movable claw 34 may move smoothly without shaking or rattling.
  • the iron core 18 is set. At this time, the central hole 38 of the iron core 18 is displaced from the circumscribed circle 37. The central hole 38 can be set so as not to hit the three claws 34, 35, 35.
  • the movable claw 34 is advanced.
  • a forward force of an air cylinder (FIG. 7, reference numeral 33) is always applied to the movable claw 34.
  • the two fixed claws 35 and the one movable claw 34 come into close contact with the iron core 18.
  • it is heated to fluidize and cure the adhesive.
  • the iron core 18 does not shift in the left-right direction of the drawing. A laminated iron core with good dimensional accuracy can be obtained.
  • the movable claw 34 is retracted as shown in FIG. 11 (d).
  • the movable claw 34 is separated from the iron core 18, and the iron core 18 is separated from the fixed claw 35.
  • the iron core 18 can be easily removed, and the work efficiency is improved.
  • a tubular ferrite 21 surrounding the induction heating coil 19 and a lower ferrite extending from the lower end of the tubular ferrite 21 to the lower plate 14 22 and an upper ferrite 23 extending from the upper end of the tubular ferrite 21 to the upper plate 15 may be added.
  • the lower ferrite 22 extending from the lower end of the tubular ferrite 21 has a structure in which the lower ferrite 22 is arranged at a predetermined distance from the lower end of the tubular ferrite 21, and the lower ferrite 22 is the lower end of the tubular ferrite 21. Refers to both structures placed in contact with. The same applies to the upper ferrite 23.
  • ⁇ Case 1 When the base plate 13 and the top plate 16 are made of carbon steel and there is no lower ferrite 22 and upper ferrite 23: The magnetic flux generated by the induction heating coil 19 passes through the tubular ferrite 21, the lower plate 14 and the upper plate 15, and the base plate 13 and the top plate 16. The tubular ferrite 21 promotes the utilization of magnetic flux. The lower plate 14 and the upper plate 15 are heated by magnetic flux and transferred to the iron core 18.
  • the base plate 13 and the top plate 16 are also heated by magnetic flux. Part of this heat goes to the lower plate 14 and the upper plate 15, but most of it is dissipated to the atmosphere. This heat dissipation causes a decrease in the heating efficiency of the iron core 18.
  • ⁇ Case 2 When the base plate 13 and the top plate 16 are made of stainless steel and there is no lower ferrite 22 and upper ferrite 23: Since the base plate 13 and the top plate 16 do not pass magnetic flux, the magnetic flux generated by the induction heating coil 19 passes through the tubular ferrite 21 and the lower plate 14 and the upper plate 15. The tubular ferrite 21 promotes the utilization of magnetic flux. The lower plate 14 and the upper plate 15 are heated by magnetic flux and transferred to the iron core 18.
  • the case 2 is preferable to the case 1 because the heat radiation from the base plate 13 and the top plate 16 to the atmosphere is eliminated or suppressed.
  • the base plate 13 and the top plate 16 are made of stainless steel, which makes it difficult for magnetic flux to pass through.
  • Stainless steel includes austenitic stainless steel, ferritic stainless steel, and martensitic stainless steel. Ferritic and martensitic stainless steels are magnetic materials and are not suitable because they pass magnetic flux well.
  • the austenitic stainless steel (for example, SUS304) is a non-magnetic material and is suitable because it is difficult for magnetic flux to pass through.
  • FIG. 13 (a) A comparative example is shown in FIG. 13 (a).
  • the tubular ferrite 21 plays a role of promoting effective utilization of the magnetic flux generated by the induction heating coil 19.
  • a part of the magnetic flux 26 passes through the iron core 18 via the upper plate 15 and the lower plate 14.
  • another magnetic flux 27 is directed toward the base plate 13 and the top plate 16. The base plate 13 and the top plate 16 cut off the magnetic flux 27. Therefore, the magnetic flux 27 cannot be effectively utilized.
  • FIG. 13 (b) An embodiment is shown in FIG. 13 (b).
  • the magnetic flux 27 is guided by the lower ferrite 22 and the upper ferrite 23. Since the upper plate 15 and the lower plate 14 are carbon steel plates, the magnetic flux 27 is passed therethrough. That is, the magnetic flux 27 passes through the upper plate 15, the iron core 18, passes through the lower plate 14, and returns to the tubular ferrite 21. As a result, the magnetic flux 27 can be effectively utilized. Therefore, it is effective to attach the lower ferrite 22 and the upper ferrite 23 to the tubular ferrite 21.
  • the present invention shortens the required heating time as compared with the conventional case, and shifts to the next heat treatment before the center guide is sufficiently cooled. Then, heat is accumulated in the center guide, the outer diameter increases, and it becomes difficult to attach the iron core 18.
  • the problem can be solved by using a variable outer diameter chuck mechanism for the center guide. Therefore, it is preferable to combine the suppression ferrite of the present invention with a variable outer diameter chuck mechanism.
  • the present invention is suitable for a heating device that heats an iron core with an adhesive to form a laminated iron core.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing & Machinery (AREA)
  • General Induction Heating (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Des ferrites d'élimination (44) sont disposées chacune entre un noyau de fer (18) et une bobine de chauffage par induction (19) afin d'éliminer la surchauffe de parties oreille (42). L'angle entre une ligne centrale (49) de la partie oreille passant à travers le point central (48) du noyau de fer (18) et passant à travers le centre d'une partie oreille (42), et une ligne centrale (51) de la ferrite passant à travers le point central du noyau de fer (18) et passant à travers le centre d'une ferrite d'élimination (44), est défini comme un angle d'intersection θ. Les ferrites d'élimination (44) sont disposées chacune au niveau d'une position éloignée des parties oreille (42), de façon à obtenir un angle d'intersection θ égal à 60°.
PCT/JP2021/041104 2020-12-25 2021-11-09 Dispositif de chauffage pour noyau de fer stratifié WO2022137852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-216240 2020-12-25
JP2020216240A JP6894616B1 (ja) 2020-12-25 2020-12-25 積層鉄心の加熱装置

Publications (1)

Publication Number Publication Date
WO2022137852A1 true WO2022137852A1 (fr) 2022-06-30

Family

ID=76540388

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/041104 WO2022137852A1 (fr) 2020-12-25 2021-11-09 Dispositif de chauffage pour noyau de fer stratifié

Country Status (3)

Country Link
JP (1) JP6894616B1 (fr)
TW (1) TWI797829B (fr)
WO (1) WO2022137852A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07298567A (ja) * 1994-04-26 1995-11-10 Honda Motor Co Ltd 積層鋼板の接着用加熱装置
JP2005348456A (ja) * 2004-05-31 2005-12-15 Toshiba Corp 回転機鉄心の製造方法
JP2019150813A (ja) * 2018-03-02 2019-09-12 田中精密工業株式会社 接着剤塗布装置及び接着剤塗布方法
JP2020036457A (ja) * 2018-08-30 2020-03-05 アイシン・エィ・ダブリュ株式会社 電機子の製造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949032A (en) * 1973-07-20 1976-04-06 General Motors Corporation Temperature stable ferrite FM tuning core
JPS5421977B2 (fr) * 1973-08-22 1979-08-03
JP2004111509A (ja) * 2002-09-17 2004-04-08 Nippon Steel Corp 鉄損特性の優れた積層鉄芯及びその製造方法
JP6706487B2 (ja) * 2015-11-19 2020-06-10 日東電工株式会社 希土類永久磁石をもった回転子を備える回転電機
CN105743296B (zh) * 2016-01-07 2018-11-23 安泰科技股份有限公司 一种用于高速电机的纳米晶合金定子铁芯的制备方法
WO2020129948A1 (fr) * 2018-12-17 2020-06-25 日本製鉄株式会社 Noyau feuilleté, son procédé de production et machine électrique tournante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07298567A (ja) * 1994-04-26 1995-11-10 Honda Motor Co Ltd 積層鋼板の接着用加熱装置
JP2005348456A (ja) * 2004-05-31 2005-12-15 Toshiba Corp 回転機鉄心の製造方法
JP2019150813A (ja) * 2018-03-02 2019-09-12 田中精密工業株式会社 接着剤塗布装置及び接着剤塗布方法
JP2020036457A (ja) * 2018-08-30 2020-03-05 アイシン・エィ・ダブリュ株式会社 電機子の製造方法

Also Published As

Publication number Publication date
JP2022101882A (ja) 2022-07-07
TWI797829B (zh) 2023-04-01
JP6894616B1 (ja) 2021-06-30
TW202226718A (zh) 2022-07-01

Similar Documents

Publication Publication Date Title
KR101158697B1 (ko) 유도 가열에 의한 가공품의 다중?주파수 열처리
CA2880953C (fr) Appareil de traitement thermique de detente comportant des bobines de chauffage par induction
KR100933903B1 (ko) 유도 가열 장치
JP2008546570A (ja) 誘導加熱デバイスおよびそれを使用して部品を製作する方法
EP2434836B1 (fr) Dispositif de chauffage par induction et procédé de commande correspondant
JP2014501851A (ja) 加熱装置
WO2022137852A1 (fr) Dispositif de chauffage pour noyau de fer stratifié
JP6549319B2 (ja) ホットスタンピング工程用高周波加熱方法
JP6331900B2 (ja) 金属帯板の誘導加熱装置
JP2018531486A6 (ja) ホットスタンピング工程用高周波加熱方法
KR20160144324A (ko) 형삭기
US7084380B2 (en) Raw tire preheating method and apparatus therefor
WO2022123980A1 (fr) Dispositif de chauffage pour noyau de fer stratifié
JP6803588B2 (ja) 加熱コイル
JP6943380B1 (ja) 積層鉄心の加熱装置
JP3166902B2 (ja) 高周波焼入れ装置
JPH0328486B2 (fr)
JP2013086327A (ja) 成形面加熱装置及び成形方法
JP2001217120A (ja) 積層電磁石
JP2008144230A (ja) 薄板製部材の熱処理方法および装置
JP3824779B2 (ja) 高周波焼入方法及び誘導加熱コイル
JP5019186B2 (ja) 複合磁性部材およびモータ
TH1901002063A (th) อุปกรณ์ให้ความร้อนและวิธีให้ความร้อน
RU2079915C1 (ru) Способ изготовления магнитопроводов
JPS59190318A (ja) 高周波焼入れ方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21910006

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21910006

Country of ref document: EP

Kind code of ref document: A1