WO2012176529A1 - Induction heating and drying apparatus - Google Patents

Induction heating and drying apparatus Download PDF

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Publication number
WO2012176529A1
WO2012176529A1 PCT/JP2012/059110 JP2012059110W WO2012176529A1 WO 2012176529 A1 WO2012176529 A1 WO 2012176529A1 JP 2012059110 W JP2012059110 W JP 2012059110W WO 2012176529 A1 WO2012176529 A1 WO 2012176529A1
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WO
WIPO (PCT)
Prior art keywords
induction heating
outer plate
heating coil
vehicle
sheet
Prior art date
Application number
PCT/JP2012/059110
Other languages
French (fr)
Japanese (ja)
Inventor
香織 長谷川
久年 坊野
Original Assignee
トヨタ車体株式会社
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 トヨタ車体株式会社 filed Critical トヨタ車体株式会社
Priority to JP2013521492A priority Critical patent/JP5477514B2/en
Publication of WO2012176529A1 publication Critical patent/WO2012176529A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0281—After-treatment with induction heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • the present invention relates to an induction heating drying apparatus that performs induction heating from the outside of a vehicle outer plate.
  • Patent Document 1 it is disclosed that at least one electromagnetic induction heating coil is provided so as to face the rocker portion of the automobile body, and the coating film applied to the rocker portion is dried. ing. Thereby, the rolling-up of the foreign material by a hot air is suppressed, and the quality defect that a foreign material adheres to a coating film by extension is reduced.
  • the electrodeposition coating film forming method of Patent Document 2 a coating film obtained by performing electrodeposition coating on a metal three-dimensional object such as an automobile body is selected by a plurality of induction heating devices. It is disclosed to heat and dry. As a result, it takes time to heat the coating film, part of it is overheated to bring the hot air temperature higher than the baking temperature, and the coating film deteriorates. The problem of not being able to paint and dry cure has been improved.
  • the present invention has been made in view of such a background.
  • the present invention provides an induction heating coil that performs induction heating from the outside of a vehicle outer plate to dry the surface of the outer plate;
  • the induction heating coil is arranged between the window portions located between the window portions in the entire outer plate of the vehicle, and the heating of the extension outer plate portion by the magnetic field generated by the induction heating coil is performed.
  • an induction heating drying apparatus characterized by comprising:
  • the induction heating and drying apparatus includes an induction heating coil and a magnetic body.
  • a magnetic body is arrange
  • the magnetic body is less susceptible to the influence of the magnetic field generated when the induction heating coil is energized.
  • the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and the hang-over outer plate part where the eddy current flows more easily than the general part of the outer plate makes the eddy current difficult to flow. It is possible to prevent the outer plate portion from being heated excessively.
  • the induction heating and drying apparatus it is possible to make it difficult to heat the overhanging outer plate portion that is easily heated.
  • the whole of the general part of the outer plate and the entire outer skin of the hanging plate can be heated as uniformly as possible, and the entire outer plate of the vehicle can be dried as uniformly as possible.
  • FIG. 1 is a perspective view showing an induction heating drying apparatus according to Example 1.
  • the outer plate of each part of the vehicle the outer plate of each part of the main body such as fender, roof, pillar, etc., and the door (side door), hood (bonnet), roof, back door (trunk lid) assembled to the main body ) Etc.
  • board of a vehicle can be made into the steel plate for various motor vehicles, for example, can be a cold-rolled steel plate, a cold high-tensile steel plate, etc.
  • the induction heating coil is formed to loop around the vehicle in the front-rear direction while being displaced in the front-rear direction, and the magnetic body includes the induction heating coil and the hanging outer plate portion. And a shielding sheet made of a sheet-shaped magnetic shield sheet having a property of shielding magnetism.
  • the magnetic field generated when the induction heating coil is energized is blocked by the shielding sheet so as not to directly hit the hanging outer plate portion.
  • the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and if the magnetic field by the induction heating coil is directly applied to the hanging outer plate part where the eddy current tends to flow compared to the general part of the outer plate. Can not be. Therefore, it is possible to prevent the overhanging plate portion from being heated excessively.
  • the induction heating coil is formed so as to be arranged in a loop around the vehicle in the front-rear direction while being displaced in the front-rear direction.
  • a reflection sheet disposed outside the portion of the induction heating coil facing the general portion other than the hanging outer plate portion of the outer plate.
  • the method of using the magnetic shield sheet is devised, and the magnetic shield sheet is arranged on the inner side (vehicle side) with respect to the induction heating coil, or on the outer side (opposite side of the vehicle) with respect to the induction heating coil. Depending on whether they are arranged, the sheet for shielding and the sheet for reflection are properly used.
  • the shielding sheet is disposed inside the induction heating coil, and is disposed between the hanging outer plate portion of the vehicle outer plate and the induction heating coil. In the hanging outer plate portion of the outer plate of the vehicle, the magnetic field generated when the induction heating coil is energized is blocked by the shielding sheet so as not to directly hit the hanging outer plate portion.
  • the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and if the magnetic field by the induction heating coil is directly applied to the hanging outer plate part where the eddy current tends to flow compared to the general part of the outer plate. Can not be. Therefore, it is possible to prevent the overhanging plate portion from being heated excessively.
  • the reflection sheet is arranged outside the general part of the outer plate of the vehicle and outside the induction heating coil.
  • the general part of the outer plate of the vehicle most of the magnetic field generated when the induction heating coil is energized is reflected by the reflection sheet and applied to the general part. Thereby, it can be made easy to hit the general part of an outer plate with the magnetic field by an induction heating coil. Therefore, the general part can be easily heated.
  • the induction heating and drying apparatus it is possible to make it difficult to heat the overhanging outer plate portion that is easily heated, and it is possible to easily heat the general portion that is difficult to be heated.
  • the whole of the general part of the outer plate and the entire outer skin of the hanging plate can be heated as uniformly as possible, and the entire outer plate of the vehicle can be dried as uniformly as possible.
  • the shielding sheet and the reflection sheet are attached to the movable tip portions of different robots, respectively, and are configured such that the position and posture can be changed by movement of the movable tip portion of the robot. Also good.
  • the position and posture of the shielding sheet and the reflecting sheet can be varied by moving the movable tip of the robot. Thereby, the difficulty of heating each part of the vehicle and the ease of heating can be appropriately adjusted.
  • the induction heating and drying apparatus can be applied to vehicles of various vehicle types in which the position and size of the hanging outer plate portion are different.
  • the shielding sheet and the reflection sheet are provided with temperature sensors for measuring the ambient temperature, and heating by the induction heating coil is performed until the temperature measured by the temperature sensor reaches a predetermined temperature. It may be configured to do.
  • the temperature sensor measures the temperature around the shielding sheet and the temperature around the reflection sheet, and the temperature of each part of the vehicle that is heated by the induction heating coil is set to a predetermined temperature. Can be.
  • the induction heating coil is formed so as to loop around the vehicle in the front-rear direction while being displaced in the front-rear direction, and the magnetic body includes the induction heating coil, the outer plate, An annular magnetic body arranged in a loop around the front-rear direction at a portion facing the spanning outer plate portion may be used.
  • a magnetic field in the opposite direction to the magnetic field generated by the induction heating coil can be generated in the annular magnetic body over the entire circumference of the portion facing the hanging outer plate portion.
  • the eddy current generated by the magnetic field generated by the induction heating coil can be canceled by the eddy current generated by the annular magnetic body in the entire circumference of the portion facing the hanging outer plate portion. Therefore, it is possible to prevent the entire circumference of the portion facing the hanging outer plate portion from being heated as much as possible.
  • part facing a hanging outer plate part general parts other than the hanging outer plate part in an outer plate can be heated by the eddy current by an induction heating coil.
  • the annular magnetic body may be an annular copper plate.
  • an eddy current can be effectively passed through the annular copper plate. Therefore, the entire outer plate of the vehicle can be dried as uniformly as possible at a low cost.
  • the annular magnetic body can be formed in a coil shape that loops while being displaced in the front-rear direction, similarly to the induction heating coil.
  • an AC voltage whose phase is shifted by 180 (opposite phase) with respect to the AC voltage applied to the induction heating coil can be applied to both ends of the coil-shaped annular magnetic body.
  • the hanging outer plate part is at least one of a portion formed between the windshield and the side glass, between the side glasses, between the side glass and the rear glass, and between the sunroof and the windshield, the side glass or the rear glass. It may be.
  • the magnetic body can make it difficult to heat any of the above portions (pillars) as the hanging outer plate portion.
  • Example 1 As shown in FIGS. 1 and 2, the induction heating drying apparatus 1 of this example performs induction heating from the outside of the outer plate (outer panel) 51 of the vehicle 5 to dry the surface of the outer plate 51. And a sheet-shaped magnetic shield sheet 3 having the property of blocking magnetism. As shown in FIG. 3, the magnetic shield sheet 3 includes a hanging outer plate portion 53 and the induction heating coil 2 in the hanging outer plate portion 53 positioned between the window portions 54 in the entire outer plate 51 of the vehicle 5.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B of this example serve as a magnetic body for making it difficult for the spanning outer plate portion 53 to be heated by the magnetic field generated by the induction heating coil 2.
  • the induction heating and drying apparatus 1 of this example is used to heat the outer plate 51 of each part of the vehicle 5 after coating such as electrodeposition coating, and to heat and dry the coating film on the outer plate 51 of each part. .
  • the vehicle 5 is transported from the painting process to the drying process by a transport line.
  • the outer plate 51 of each part of the vehicle 5 includes an outer plate 51 such as a fender, a roof, and a pillar as each part in the main body 50, a door (side door) as an opening / closing part assembled to the main body 50, and a hood. It means the outer plate 51 such as (bonnet), roof, back door (trunk lid) and the like.
  • the outer plate 51 is a steel plate for automobiles using iron.
  • the induction heating coil 2 is configured to apply an alternating voltage of a predetermined frequency from a power source to both ends and heat the metal outer plate 51 by eddy current generated in the coil. is there.
  • the induction heating coil 2 can change energization conditions by changing a frequency, an alternating voltage, or the like.
  • the induction heating coil 2 of this example is formed so as to loop around the vehicle 5 in the front-rear direction L while being displaced in the front-rear direction L.
  • the induction heating coil 2 is formed by a plurality of loops that are continuously connected in the front-rear direction L of the vehicle 5.
  • the hanging outer plate portion 53 of this example is a pillar formed between the side glasses.
  • the pillars in the vehicle 5 of this example are the A pillar 531 between the windshield 541 and the front side glass 542, the B pillar 532 between the front side glass 542 and the intermediate side glass 543, and between the intermediate side glass 543 and the rear side glass 544.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B of this example are disposed between the B pillar 532 and the induction heating coil 2 and between the C pillar 533 and the induction heating coil 2.
  • the shielding sheets 3A and 3B are long in the vertical direction, and are disposed on the B pillar 532 and the door portion 52 positioned below the B pillar 532.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflecting sheet 3 ⁇ / b> C are separately disposed on the side surfaces on both sides of the vehicle 5.
  • FIG. 4 shows a state in which the magnetic shield sheet 3 is arranged on the inner side (vehicle 5 side) with respect to the induction heating coil 2 and the shielding sheets 3A and 3B are formed, with the induction heating coil 2 and the vehicle 5 taken as a cross section.
  • magnetic lines of force (magnetic flux) X are formed radially around the induction heating coil 2 (see FIG. 8).
  • the magnetic force lines X colliding with the shielding sheets 3A and 3B are The light is reflected on the induction heating coil 2 side without passing through the shielding sheets 3A and 3B. Thereby, in the periphery of the shielding sheets 3A and 3B, the magnetic lines of force X do not pass directly to the hanging outer plate portion 53 of the outer plate 51 of the vehicle 5, and no eddy current is directly generated.
  • the magnetic shield sheet 3 is formed by forming resin film layers 32 on both surfaces of a film-like base material 31 that shields magnetism.
  • the base material 31 can contain silicon (Si), boron (B), etc. with respect to iron (Fe).
  • the base material 31 can be composed of a nanocrystalline soft magnetic material having a high magnetic permeability.
  • the resin film layer 32 is made of a resin such as polyethylene terephthalate (PET), and can be bonded to the substrate 31 with an adhesive.
  • FIG. 5 shows a state in which the magnetic shield sheet 3 is arranged outside the induction heating coil 2 (on the side opposite to the vehicle 5) to form the reflection sheet 3C, with the induction heating coil 2 and the vehicle 5 taken as a cross section. .
  • the magnetic shield sheet 3 is disposed outside the induction heating coil 2 to form the reflecting sheet 3C, the magnetic force lines X that collide with the reflecting sheet 3C do not pass through the reflecting sheet 3C, and the vehicle 5 Reflected on the side.
  • the magnetic lines of force X are concentrated on the vehicle 5 side, the magnetic lines of force X are directly passed to the general part 52 in the vehicle 5, and the eddy current is more effectively directly applied to the general part 52 in the vehicle 5. Can be generated automatically.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflecting sheet 3 ⁇ / b> C of this example are attached to movable tip portions 41 of different robots 4, respectively.
  • the induction heating and drying apparatus 1 of this example includes a first shielding sheet 3 ⁇ / b> A disposed over the entire length of the B pillar 532 formation portion on the side surface of the vehicle 5, and the B pillar 532 formation portion and C pillar 533 on the side surface of the vehicle 5.
  • Each of the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflecting sheet 3 ⁇ / b> C is disposed on the side surfaces on both sides of the vehicle 5.
  • Each of the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflecting sheet 3 ⁇ / b> C disposed on both sides of the vehicle 5 is configured such that the position and posture thereof can be changed by moving the movable tip 41 of the robot 4.
  • the positions and postures of the shielding sheets 3A and 3B and the reflection sheet 3C are varied, so that it is difficult to heat each part of the outer plate 51 of the vehicle 5. Easiness can be adjusted as appropriate, and the heating temperature in each part of the outer plate 51 of the vehicle 5 can be made as uniform as possible.
  • the induction heating drying apparatus 1 can be applied to the vehicles 5 of various vehicle types in which the position and size of the hanging outer plate portion 53 are different.
  • a temperature sensor 42 for measuring the ambient temperature can be disposed on each of the shielding sheets 3A and 3B and the reflecting sheet 3C.
  • the induction heating drying apparatus 1 can be configured to perform heating by the induction heating coil 2 until the temperature measured by the temperature sensor 42 reaches a predetermined temperature.
  • the shielding sheets 3A and 3B and the reflecting sheet 3C can be used as follows.
  • the temperature of each part of the outer plate 51 of the vehicle 5 can be measured using non-contact temperature detection means such as a thermo camera. it can.
  • a part having a high temperature and a part having a low temperature are confirmed.
  • the high temperature part is mainly around the B pillar 532 and the C pillar 533, and the low temperature part is near the front fender, front door, excluding the lower position of the B pillar 532 in the longitudinal direction L of the vehicle 5.
  • the reason why the temperatures around the B pillar 532 and the C pillar 533 increase is considered as follows.
  • an eddy current flows through the vehicle 5 due to the magnetic field generated from the induction heating coil 2.
  • the eddy current does not flow through the side glass where there is no outer plate 51. Therefore, the eddy current flowing through the ceiling portion and the door portion of the vehicle 5 flows through the ceiling portion and the door portion via the B pillar 532 and the C pillar 533 as the outer plate 51.
  • the periphery of the B pillar 532 and the periphery of the C pillar 533 are excessively heated.
  • the general part 52 such as a door and a fender, excluding the position below the B pillar 532, it is considered that eddy current does not easily pass and is not easily heated.
  • the first shielding sheet 3 ⁇ / b> A is disposed inside the induction heating coil 2 and outside the formation position of the B pillar 532 by the movement of the movable tip 41 of each robot 4.
  • the second shielding sheet 3 ⁇ / b> B is disposed inside the induction heating coil 2 and outside the location where the B pillar 532 is formed.
  • the reflective sheet 3 ⁇ / b> C is opposed to the general part 52 located below the B pillar 532 and the C pillar 533 in the longitudinal direction L of the vehicle 5. Therefore, it is arranged outside the induction heating coil 2.
  • the magnetic lines of force X to the vehicle 5 are weakened by the shielding sheets 3A and 3B at the formation positions of the B pillar 532 and the C pillar 533 where the shielding sheets 3A and 3B are arranged.
  • the eddy current which flows into the ceiling part and the door part (general part) 52 of the vehicle 5 decreases, and the periphery of the B pillar 532 and the periphery of the C pillar 533 are hardly heated.
  • the magnetic force lines X to the vehicle 5 are strengthened by the reflection sheet 3C.
  • the eddy current which flows into the door part 52 increases, and the door part 52 becomes easy to be heated.
  • the movable tip 41 of the robot 4 is moved, and the door part (general part) 52 on which the reflection sheet 3C is arranged is arranged near the front fender, near the front door, near the slide door (rear door), near the rear fender, It can be changed as appropriate.
  • the heating by the induction heating coil 2 is continued until the temperature measured by the temperature sensor 42 disposed on each of the shielding sheets 3A and 3B and the reflecting sheet 3C reaches a predetermined temperature. Further, when the temperature around the shielding sheets 3A and 3B and the surroundings of the reflection sheet 3C is measured by the temperature sensor 42, the movable tip 41 of each robot 4 is moved to move the shielding sheets 3A and 3B. The 3B and the reflection sheet 3C can be brought closer to the side of the vehicle 5 or away from the side of the vehicle 5. Thereafter, when the entire vehicle 5 is heated to a target temperature and the coating film is dried, heating by the induction heating coil 2 can be terminated.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflection sheet 3 ⁇ / b> C can be fixed to the induction heating coil 2.
  • Each of the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and the reflecting sheet 3 ⁇ / b> C can be formed around the vehicle 5 in the front-rear direction L.
  • FIG. 7 shows a cross section in which the shielding sheets 3A and 3B are arranged on the right half, and a cross section in which the reflection sheet 3C is arranged on the left half.
  • the induction heating coil 2 can have various configurations other than being formed by looping around the longitudinal direction L of the vehicle 5.
  • the induction heating coil 2 can be formed so as to face the left and right side surfaces of the vehicle 5, the top surface of the vehicle 5, the front surface of the vehicle 5, and the rear surface of the vehicle 5, respectively.
  • the induction heating and drying apparatus 1 of this example includes an induction heating coil 2 and a magnetic shield sheet 3. Then, the method of using the magnetic shield sheet 3 is devised, and the magnetic shield sheet 3 is arranged on the inner side (the vehicle 5 side) with respect to the induction heating coil 2 or on the outer side (with the vehicle 5). Depending on whether they are arranged on the opposite side, the sheet is divided into the shielding sheets 3A and 3B and the reflecting sheet 3C.
  • the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B are arranged inside the induction heating coil 2, and are arranged between the hanging outer plate portion 53 (the B pillar 532 and the C pillar 533) and the induction heating coil 2 in the outer plate 51 of the vehicle 5. Is done. In the hanging outer plate portion 53 of the outer plate 51 of the vehicle 5, the magnetic field generated when the induction heating coil 2 is energized does not directly hit the hanging outer plate portion 53 by the shielding sheets 3A and 3B. Will be blocked.
  • the flow passage cross-sectional area is reduced as compared with the general portion 52 of the outer plate 51, and the induction heating coil is used for the hanging outer plate portion 53 where eddy current tends to flow as compared with the general portion 52 of the outer plate 51.
  • the magnetic field by 2 can be prevented from being directly applied. Therefore, it is possible to prevent the hanging outer plate portion 53 from being heated excessively.
  • the reflection sheet 3 ⁇ / b> C is disposed outside the general portion 52 in the outer plate 51 of the vehicle 5 and outside the induction heating coil 2.
  • the general part 52 of the outer plate 51 of the vehicle 5 most of the magnetic field generated when the induction heating coil 2 is energized is reflected by the shielding sheets 3 ⁇ / b> A and 3 ⁇ / b> B and applied to the general part 52.
  • the general part 52 of the outer plate 51 can be easily subjected to a magnetic field by the induction heating coil 2. Therefore, the general part 52 can be easily heated.
  • the hanging outer plate portion 53 that is easily heated can be made difficult to heat, and the general portion 52 that is difficult to be heated can be easily heated.
  • the whole of the general part 52 of the outer plate 51 and the entire outer plate part 53 can be heated as uniformly as possible, and the entire outer plate 51 of the vehicle 5 can be dried as uniformly as possible.
  • Example 2 In this example, as shown in FIGS. 9 and 10, the magnetic shield sheet 3 shown in Example 1 is not used, and the heating to the hanging outer plate portion 53 due to the magnetic field generated by the induction heating coil 2 is suppressed.
  • the induction heating coil 2 of this example is formed so as to loop around the vehicle 5 in the front-rear direction L while being displaced in the front-rear direction L, as in the first embodiment.
  • the magnetic body of this example is formed from the annular magnetic body 3X which is a ring-shaped copper plate, and this annular magnetic body 3X is between the induction heating coil 2 and the outer plate
  • the annular magnetic body 3X is formed in a loop on the inner peripheral side of a part in the front-rear direction L of the induction heating coil 2 in order to flow an eddy current in a direction opposite to the eddy current generated by the induction heating coil 2.
  • the annular magnetic body 3X of this example is formed in a square ring shape according to a substantially square cross-sectional shape when the vehicle 5 is cut in the lateral direction.
  • the annular magnetic body 3X is disposed on the inner peripheral side of the induction heating coil 2 via an insulator or the like. More specifically, the annular magnetic body 3X is attached to the induction heating coil 2 by an insulator or the like disposed on the inner peripheral side of the induction heating coil 2 at a plurality of locations in the circumferential direction forming the loop.
  • the amount of eddy current flowing to the hanging outer plate portion 53 is changed by changing the thickness of the annular magnetic body 3X, the distance between the annular magnetic body 3X and the outer plate 51, and the distance between the annular magnetic body 3X and the induction heating coil 2. Can be adjusted.
  • the annular magnetic body 3X has a large width in the front-rear direction L on both sides facing the hanging outer plate portion 53 located on both sides of the vehicle 5, and upper and lower portions facing the upper and lower surfaces of the vehicle 5. The width in the front-rear direction L can be reduced.
  • a magnetic field in the opposite direction to the magnetic field generated by the induction heating coil 2 can be generated in the annular magnetic body 3X on the entire circumference of the portion facing the hanging outer plate portion 53.
  • the eddy current generated by the magnetic field generated by the induction heating coil 2 can be canceled by the eddy current generated by the annular magnetic body 3X on the entire circumference of the portion facing the hanging outer plate portion 53. Therefore, it is possible to prevent the entire circumference of the portion facing the hanging outer plate portion 53 from being heated as much as possible.
  • the general portion 52 of the outer plate 51 other than the hanging outer plate portion 53 can be heated by the eddy current generated by the induction heating coil 2 with respect to the entire circumference of the portion facing the hanging outer plate portion 53.
  • the whole of the general part 52 of the outer plate 51 and the entire outer plate part 53 can be heated as uniformly as possible, and the entire outer plate 51 of the vehicle 5 can be dried as uniformly as possible.
  • the other structure of the induction heating drying apparatus 1 is the same as that of the first embodiment, and the same effect as that of the first embodiment can be obtained.

Abstract

An induction heating and drying apparatus (1) is provided with: an induction heating coil (2), which performs induction heating from the outer side of an outer plate (51) of a vehicle (5), and dries the surface of the outer plate (51); and a sheet-like magnetic shielding sheet (3), which has characteristics of blocking magnetism. The magnetic shielding sheet (3) has: at intermediate outer plate portions (53), each of which is a part of the outer plate (51) of the vehicle (5), and is positioned between window portions (54), shielding sheets (3A, 3B) that are respectively disposed between the intermediate outer plate portions (53) and the induction heating coil (2); and at general portions (52) of the entire outer plate (51), said general portions being other than the intermediate outer plate portions (53), a reflecting sheet (3C) that is disposed on the outer side of the induction heating coil (2).

Description

誘導加熱乾燥装置Induction heating dryer
　本発明は、車両の外板の外側から誘導加熱を行う誘導加熱乾燥装置に関する。 The present invention relates to an induction heating drying apparatus that performs induction heating from the outside of a vehicle outer plate.
　従来より、自動車等の車両ボディに塗装を行った後には、この車両ボディを乾燥炉内へ搬送し、乾燥炉内において、バーナの燃焼を行って発生させた熱風をファンによって送風して、車両ボディを加熱して乾燥させている。
　一方、乾燥炉を用いて乾燥を行う際には、乾燥炉内の温度分布が不均一になったり、塗膜の外面が内面よりも先に乾くことによって塗装の品質に影響が生じたり、塗装面に埃が付着したりする問題が生じるおそれがある。 Conventionally, after painting a vehicle body such as an automobile, the vehicle body is transported into a drying furnace, and hot air generated by burning a burner in the drying furnace is blown by a fan to The body is heated and dried.
On the other hand, when drying using a drying furnace, the temperature distribution in the drying furnace becomes uneven, the coating surface is dried before the inner surface, and the coating quality is affected. There is a risk that dust may adhere to the surface.
　そこで、例えば、特許文献１の塗装用乾燥炉においては、自動車ボディのうちロッカー部に対向するように少なくとも１つの電磁誘導加熱コイルを設け、ロッカー部に施した塗膜を乾燥させることが開示されている。これにより、熱風による異物の巻き上げを抑制し、ひいては塗膜に異物が付着するといった品質不良を低減している。
　また、例えば、特許文献２の電着塗膜形成方法においては、自動車ボディ等の金属製の立体的被塗物に電着塗装を行って得られた塗膜を、複数の誘導加熱装置により選択的に加熱乾燥することが開示されている。これにより、塗膜を加熱するのに時間がかかる、熱風温度を焼き付け温度以上の高温にするため一部が過剰加熱され塗膜が劣化する、金属とプラスチックを一体化した被塗物の電着塗装・乾燥硬化ができない等の問題を改善している。 Therefore, for example, in the coating drying furnace of Patent Document 1, it is disclosed that at least one electromagnetic induction heating coil is provided so as to face the rocker portion of the automobile body, and the coating film applied to the rocker portion is dried. ing. Thereby, the rolling-up of the foreign material by a hot air is suppressed, and the quality defect that a foreign material adheres to a coating film by extension is reduced.
Further, for example, in the electrodeposition coating film forming method of Patent Document 2, a coating film obtained by performing electrodeposition coating on a metal three-dimensional object such as an automobile body is selected by a plurality of induction heating devices. It is disclosed to heat and dry. As a result, it takes time to heat the coating film, part of it is overheated to bring the hot air temperature higher than the baking temperature, and the coating film deteriorates. The problem of not being able to paint and dry cure has been improved.
特開２００５－８７８１９号公報JP 2005-87819 A 特開２００４－２９６５号公報JP 2004-2965 A
　ところで、上記特許文献１等に開示された塗装用乾燥炉においては、自動車ボディの一部のみを局所的に電磁誘導加熱コイルによって加熱している。そのため、電磁誘導加熱コイルによって、塗装を行った後の車両の全体を加熱して乾燥させる場合についての工夫はなされていない。この場合には、車両の各部において温度差が生じ、車両の各部を乾燥する条件にばらつきが生じるおそれがある。 By the way, in the coating drying furnace disclosed in the above-mentioned Patent Document 1 and the like, only a part of the automobile body is locally heated by an electromagnetic induction heating coil. Therefore, the device about the case where the whole vehicle after painting is heated and dried with an electromagnetic induction heating coil is not made. In this case, a temperature difference occurs in each part of the vehicle, and there is a possibility that variations occur in conditions for drying each part of the vehicle.
　本発明は、かかる背景に鑑みてなされたもので、外板の一般部と掛渡外板部との全体をできるだけ均一に加熱し、車両の外板全体をできるだけ均一に乾燥させることができる誘導加熱乾燥装置を提供しようとして得られたものである。 The present invention has been made in view of such a background. An induction capable of heating the whole of the general portion of the outer plate and the entire outer plate portion as much as possible and drying the entire outer plate of the vehicle as uniformly as possible. It was obtained in an attempt to provide a heat drying apparatus.
　本発明は、車両の外板の外側から誘導加熱を行って、該外板の表面を乾燥させる誘導加熱コイルと、
　該誘導加熱コイルと、上記車両の外板全体において窓部分同士の間に位置する掛渡外板部との間に配置され、上記誘導加熱コイルによって生じる磁界による上記掛渡外板部への加熱を抑制するための磁性体と、を備えていることを特徴とする誘導加熱乾燥装置にある。 The present invention provides an induction heating coil that performs induction heating from the outside of a vehicle outer plate to dry the surface of the outer plate;
The induction heating coil is arranged between the window portions located between the window portions in the entire outer plate of the vehicle, and the heating of the extension outer plate portion by the magnetic field generated by the induction heating coil is performed. And an induction heating drying apparatus characterized by comprising:
　上記誘導加熱乾燥装置は、誘導加熱コイルと磁性体とを備えるものである。磁性体は、誘導加熱コイルに対する内側に配置され、車両の外板における掛渡外板部と誘導加熱コイルとの間に配置される。車両の外板の掛渡外板部においては、磁性体によって、誘導加熱コイルに通電を行ったときに生じる磁界の影響を受けにくくなる。
　これにより、外板の一般部に比べて流路断面積が縮小し、外板の一般部に比べて渦電流が流れやすい掛渡外板部は、渦電流が流れにくくすることにより、掛渡外板部が過度に加熱されることを防止することができる。 The induction heating and drying apparatus includes an induction heating coil and a magnetic body. A magnetic body is arrange | positioned inside with respect to the induction heating coil, and is arrange | positioned between the spanning outer plate | board part in the outer plate | board of a vehicle, and the induction heating coil. In the hanging outer plate portion of the outer plate of the vehicle, the magnetic body is less susceptible to the influence of the magnetic field generated when the induction heating coil is energized.
As a result, the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and the hang-over outer plate part where the eddy current flows more easily than the general part of the outer plate makes the eddy current difficult to flow. It is possible to prevent the outer plate portion from being heated excessively.
　このように、誘導加熱乾燥装置においては、加熱されやすい掛渡外板部は加熱しにくくすることができる。これにより、外板の一般部と掛渡外板部との全体をできるだけ均一に加熱し、車両の外板全体をできるだけ均一に乾燥させることができる。 Thus, in the induction heating and drying apparatus, it is possible to make it difficult to heat the overhanging outer plate portion that is easily heated. Thereby, the whole of the general part of the outer plate and the entire outer skin of the hanging plate can be heated as uniformly as possible, and the entire outer plate of the vehicle can be dried as uniformly as possible.
実施例１にかかる、誘導加熱乾燥装置を示す斜視図。1 is a perspective view showing an induction heating drying apparatus according to Example 1. FIG. 実施例１にかかる、誘導加熱乾燥装置を示す側面図。The side view which shows the induction heating drying apparatus concerning Example 1. FIG. 実施例１にかかる、遮蔽用シート部の配置位置を右半分に示し、反射用シート部の配置位置を左半分に示して、誘導加熱乾燥装置を示す正面図。The front view which shows the arrangement | positioning position of the sheet | seat part for shielding concerning Example 1 in the right half, shows the arrangement position of the sheet | seat part for reflection in the left half, and shows an induction heating drying apparatus. 実施例１にかかる、遮蔽用シート部を配置した位置の誘導加熱コイル及び車両を示す断面図。Sectional drawing which shows the induction heating coil and vehicle of the position which have arrange | positioned the sheet | seat part for shielding concerning Example 1. FIG. 実施例１にかかる、反射用シート部を配置した位置の誘導加熱コイル及び車両を示す断面図。Sectional drawing which shows the induction heating coil and vehicle of the position which have arrange | positioned the sheet | seat part for reflection concerning Example 1. FIG. 実施例１にかかる、他の誘導加熱乾燥装置を示す側面図。The side view which shows the other induction heating drying apparatus concerning Example 1. FIG. 実施例１にかかる、遮蔽用シート部の配置位置を右半分に示し、反射用シート部の配置位置を左半分に示して、他の誘導加熱乾燥装置を示す正面図。The front view which shows the arrangement position of the sheet | seat part for shielding concerning Example 1 in the right half, shows the arrangement position of the sheet | seat part for reflection in the left half, and shows another induction heating drying apparatus. 比較例にかかる、誘導加熱コイル及び車両を示す断面図。Sectional drawing which shows the induction heating coil and vehicle concerning a comparative example. 実施例２にかかる、他の誘導加熱乾燥装置を示す側面図。The side view which shows the other induction heating drying apparatus concerning Example 2. FIG. 実施例２にかかる、他の誘導加熱乾燥装置を示す正面図。The front view which shows the other induction heating drying apparatus concerning Example 2. FIG.
　上述した誘導加熱乾燥装置における好ましい実施の形態につき説明する。
　上記車両の各部の外板としては、メインボディにおける各部としてのフェンダー、ルーフ、ピラー等の外板、及びメインボディに組み付けたドア（サイドドア）、フード（ボンネット）、ルーフ、バックドア（トランクリッド）等の外板がある。
　また、車両の外板は、各種の自動車用の鋼板とすることができ、例えば、冷間圧延鋼板、冷間高張力鋼板等とすることができる。 A preferred embodiment of the above-described induction heating drying apparatus will be described.
As the outer plate of each part of the vehicle, the outer plate of each part of the main body such as fender, roof, pillar, etc., and the door (side door), hood (bonnet), roof, back door (trunk lid) assembled to the main body ) Etc.
Moreover, the outer plate | board of a vehicle can be made into the steel plate for various motor vehicles, for example, can be a cold-rolled steel plate, a cold high-tensile steel plate, etc.
　上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、上記磁性体は、上記誘導加熱コイルと上記掛渡外板部との間に配置され、磁気を遮断する性質を有するシート形状の磁気シールドシートからなる遮蔽用シートであってもよい。 The induction heating coil is formed to loop around the vehicle in the front-rear direction while being displaced in the front-rear direction, and the magnetic body includes the induction heating coil and the hanging outer plate portion. And a shielding sheet made of a sheet-shaped magnetic shield sheet having a property of shielding magnetism.
　この場合には、車両の外板の掛渡外板部においては、誘導加熱コイルに通電を行ったときに生じる磁界は、遮蔽用シートによって、掛渡外板部に直接当たらないように遮断される。これにより、外板の一般部に比べて流路断面積が縮小し、外板の一般部に比べて渦電流が流れやすい掛渡外板部に対しては、誘導加熱コイルによる磁界が直接当たらないようにすることができる。そのため、掛渡外板部が過度に加熱されることを防止することができる。 In this case, in the hanging outer plate portion of the outer plate of the vehicle, the magnetic field generated when the induction heating coil is energized is blocked by the shielding sheet so as not to directly hit the hanging outer plate portion. The As a result, the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and if the magnetic field by the induction heating coil is directly applied to the hanging outer plate part where the eddy current tends to flow compared to the general part of the outer plate. Can not be. Therefore, it is possible to prevent the overhanging plate portion from being heated excessively.
　また、上記誘導加熱乾燥装置において、上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、上記誘導加熱乾燥装置は、磁気を遮断する性質を有するシート形状の磁気シールドシートからなり、上記誘導加熱コイルと上記掛渡外板部との間に上記磁性体として配置する遮蔽用シートと、磁気を遮断する性質を有するシート形状の磁気シールドシートからなり、上記外板のうち上記掛渡外板部以外の一般部に対向する上記誘導加熱コイルの部位の外側に配置する反射用シートと、を備えていてもよい。 Further, in the induction heating drying apparatus, the induction heating coil is formed so as to be arranged in a loop around the vehicle in the front-rear direction while being displaced in the front-rear direction. A sheet of magnetic shielding sheet having a property of shielding magnetism, a shielding sheet disposed as the magnetic body between the induction heating coil and the hanging outer plate portion, and a sheet having a property of shielding magnetism And a reflection sheet disposed outside the portion of the induction heating coil facing the general portion other than the hanging outer plate portion of the outer plate.
　この場合には、磁気シールドシートの用い方に工夫を行い、磁気シールドシートを、誘導加熱コイルに対して内側（車両側）に配置するか、誘導加熱コイルに対して外側（車両と反対側）に配置するかによって、遮蔽用シートと反射用シートとに使い分けている。
　遮蔽用シートは、誘導加熱コイルに対する内側に配置され、車両の外板における掛渡外板部と誘導加熱コイルとの間に配置される。車両の外板の掛渡外板部においては、誘導加熱コイルに通電を行ったときに生じる磁界は、遮蔽用シートによって、掛渡外板部に直接当たらないように遮断される。これにより、外板の一般部に比べて流路断面積が縮小し、外板の一般部に比べて渦電流が流れやすい掛渡外板部に対しては、誘導加熱コイルによる磁界が直接当たらないようにすることができる。そのため、掛渡外板部が過度に加熱されることを防止することができる。 In this case, the method of using the magnetic shield sheet is devised, and the magnetic shield sheet is arranged on the inner side (vehicle side) with respect to the induction heating coil, or on the outer side (opposite side of the vehicle) with respect to the induction heating coil. Depending on whether they are arranged, the sheet for shielding and the sheet for reflection are properly used.
The shielding sheet is disposed inside the induction heating coil, and is disposed between the hanging outer plate portion of the vehicle outer plate and the induction heating coil. In the hanging outer plate portion of the outer plate of the vehicle, the magnetic field generated when the induction heating coil is energized is blocked by the shielding sheet so as not to directly hit the hanging outer plate portion. As a result, the cross-sectional area of the flow path is reduced compared to the general part of the outer plate, and if the magnetic field by the induction heating coil is directly applied to the hanging outer plate part where the eddy current tends to flow compared to the general part of the outer plate. Can not be. Therefore, it is possible to prevent the overhanging plate portion from being heated excessively.
　反射用シートは、車両の外板における一般部の外側において、誘導加熱コイルに対する外側に配置される。車両の外板の一般部においては、誘導加熱コイルに通電を行ったときに生じる磁界は、反射用シートによって多くが反射され、一般部に当てられる。これにより、外板の一般部に対しては、誘導加熱コイルによる磁界が当たりやすくすることができる。そのため、一般部を加熱しやすくすることができる。 The reflection sheet is arranged outside the general part of the outer plate of the vehicle and outside the induction heating coil. In the general part of the outer plate of the vehicle, most of the magnetic field generated when the induction heating coil is energized is reflected by the reflection sheet and applied to the general part. Thereby, it can be made easy to hit the general part of an outer plate with the magnetic field by an induction heating coil. Therefore, the general part can be easily heated.
　このように、誘導加熱乾燥装置においては、加熱されやすい掛渡外板部は加熱しにくくすることができ、加熱されにくい一般部は加熱しやすくすることができる。これにより、外板の一般部と掛渡外板部との全体をできるだけ均一に加熱し、車両の外板全体をできるだけ均一に乾燥させることができる。 As described above, in the induction heating and drying apparatus, it is possible to make it difficult to heat the overhanging outer plate portion that is easily heated, and it is possible to easily heat the general portion that is difficult to be heated. Thereby, the whole of the general part of the outer plate and the entire outer skin of the hanging plate can be heated as uniformly as possible, and the entire outer plate of the vehicle can be dried as uniformly as possible.
　また、上記遮蔽用シートと上記反射用シートとは、それぞれ別々のロボットの可動先端部に取り付けられており、かつ、該ロボットの可動先端部の移動によって位置及び姿勢を可変可能に構成されていてもよい。
　この場合には、ロボットの可動先端部の移動によって、遮蔽用シートと反射用シートとの位置及び姿勢を可変させることができる。これにより、車両の各部の加熱しにくさと加熱しやすさとを、適宜調整することができる。また、掛渡外板部の位置、大きさが異なる種々の車種の車両に対して、誘導加熱乾燥装置を適用することができる。 Further, the shielding sheet and the reflection sheet are attached to the movable tip portions of different robots, respectively, and are configured such that the position and posture can be changed by movement of the movable tip portion of the robot. Also good.
In this case, the position and posture of the shielding sheet and the reflecting sheet can be varied by moving the movable tip of the robot. Thereby, the difficulty of heating each part of the vehicle and the ease of heating can be appropriately adjusted. In addition, the induction heating and drying apparatus can be applied to vehicles of various vehicle types in which the position and size of the hanging outer plate portion are different.
　また、上記遮蔽用シートと上記反射用シートとには、周囲の温度を測定する温度センサが配置されており、該温度センサによる測定温度が所定の温度になるまで、上記誘導加熱コイルによる加熱を行うよう構成されていてもよい。
　この場合には、温度センサによって、遮蔽用シートの周辺の温度と、反射用シートの周辺の温度とを測定し、誘導加熱コイルによって加熱を行う車両の各部の温度を、予め設定した所定の温度にすることができる。 The shielding sheet and the reflection sheet are provided with temperature sensors for measuring the ambient temperature, and heating by the induction heating coil is performed until the temperature measured by the temperature sensor reaches a predetermined temperature. It may be configured to do.
In this case, the temperature sensor measures the temperature around the shielding sheet and the temperature around the reflection sheet, and the temperature of each part of the vehicle that is heated by the induction heating coil is set to a predetermined temperature. Can be.
　また、上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、上記磁性体は、上記誘導加熱コイルと上記外板との間であって、上記掛渡外板部に対向する部位において、上記前後方向の回りにループして配置される環状磁性体であってもよい。 The induction heating coil is formed so as to loop around the vehicle in the front-rear direction while being displaced in the front-rear direction, and the magnetic body includes the induction heating coil, the outer plate, An annular magnetic body arranged in a loop around the front-rear direction at a portion facing the spanning outer plate portion may be used.
　この場合には、掛渡外板部に対向する部位の全周においては、誘導加熱コイルによって生じる磁界とは逆向きの磁界を、環状磁性体に発生させることができる。これにより、掛渡外板部に対向する部位の全周においては、誘導加熱コイルによる磁界によって発生させる渦電流を、環状磁性体によって発生させる渦電流によって打ち消すことができる。そのため、掛渡外板部に対向する部位の全周は、できるだけ加熱しないようにすることができる。なお、掛渡外板部に対向する部位の全周に対し、外板における掛渡外板部以外の一般部は、誘導加熱コイルによる渦電流によって加熱することができる。
　こうして、加熱されやすい掛渡外板部は加熱しにくくすることができ、加熱されにくい一般部は加熱しやすくすることができる。これにより、外板の一般部と掛渡外板部との全体をできるだけ均一に加熱し、車両の外板全体をできるだけ均一に乾燥させることができる。 In this case, a magnetic field in the opposite direction to the magnetic field generated by the induction heating coil can be generated in the annular magnetic body over the entire circumference of the portion facing the hanging outer plate portion. As a result, the eddy current generated by the magnetic field generated by the induction heating coil can be canceled by the eddy current generated by the annular magnetic body in the entire circumference of the portion facing the hanging outer plate portion. Therefore, it is possible to prevent the entire circumference of the portion facing the hanging outer plate portion from being heated as much as possible. In addition, with respect to the whole periphery of the site | part facing a hanging outer plate part, general parts other than the hanging outer plate part in an outer plate can be heated by the eddy current by an induction heating coil.
Thus, it is possible to make it difficult to heat the overhanging plate portion that is easily heated, and it is possible to easily heat the general portion that is difficult to be heated. Thereby, the whole of the general part of the outer plate and the entire outer skin of the hanging plate can be heated as uniformly as possible, and the entire outer plate of the vehicle can be dried as uniformly as possible.
　また、上記環状磁性体は、環形状の銅板であってもよい。
　この場合には、環形状の銅板に渦電流を効果的に流すことができる。そのため、少ないコストで、車両の外板全体をできるだけ均一に乾燥させることができる。 The annular magnetic body may be an annular copper plate.
In this case, an eddy current can be effectively passed through the annular copper plate. Therefore, the entire outer plate of the vehicle can be dried as uniformly as possible at a low cost.
　また、環状磁性体は、誘導加熱コイルと同様に、前後方向に位置ずれしながらループするコイル形状に形成することもできる。この場合、コイル形状の環状磁性体の両端には、誘導加熱コイルに印加する交流電圧に対して、位相が１８０ずれる（逆位相の）交流電圧を印加することができる。これにより、掛渡外板部に対向する部位の全周においては、誘導加熱コイルへの通電により発生する渦電流を、コイル形状の環状磁性体への通電により発生する渦電流によって効果的に打ち消すことができる。 Also, the annular magnetic body can be formed in a coil shape that loops while being displaced in the front-rear direction, similarly to the induction heating coil. In this case, an AC voltage whose phase is shifted by 180 (opposite phase) with respect to the AC voltage applied to the induction heating coil can be applied to both ends of the coil-shaped annular magnetic body. As a result, the eddy current generated by energizing the induction heating coil is effectively canceled by the eddy current generated by energizing the coil-shaped annular magnetic body on the entire circumference of the portion facing the hanging outer plate portion. be able to.
　また、上記掛渡外板部は、フロントガラスとサイドガラスとの間、サイドガラス同士の間、サイドガラスとリヤガラスとの間、サンルーフとフロントガラス、サイドガラス又はリヤガラスとの間に形成された部分の少なくともいずれかであってもよい。
　この場合には、磁性体によって、掛渡外板部としての上記いずれかの部分（ピラー）を加熱しにくくすることができる。 Further, the hanging outer plate part is at least one of a portion formed between the windshield and the side glass, between the side glasses, between the side glass and the rear glass, and between the sunroof and the windshield, the side glass or the rear glass. It may be.
In this case, the magnetic body can make it difficult to heat any of the above portions (pillars) as the hanging outer plate portion.
　以下に、誘導加熱乾燥装置にかかる実施例につき、図面を参照して説明する。
（実施例１）
　本例の誘導加熱乾燥装置１は、図１、図２に示すごとく、車両５の外板（アウターパネル）５１の外側から誘導加熱を行って、外板５１の表面を乾燥させる誘導加熱コイル２と、磁気を遮断する性質を有するシート形状の磁気シールドシート３とを備えている。
　磁気シールドシート３は、図３に示すごとく、車両５の外板５１の全体のうち窓部分５４同士の間に位置する掛渡外板部５３において、掛渡外板部５３と誘導加熱コイル２との間に配置する遮蔽用シート３Ａ，３Ｂと、外板５１の全体のうち掛渡外板部５３以外の一般部５２において、誘導加熱コイル２の外側に配置する反射用シート３Ｃとを有している。 Hereinafter, embodiments of the induction heating drying apparatus will be described with reference to the drawings.
Example 1
As shown in FIGS. 1 and 2, the induction heating drying apparatus 1 of this example performs induction heating from the outside of the outer plate (outer panel) 51 of the vehicle 5 to dry the surface of the outer plate 51. And a sheet-shaped magnetic shield sheet 3 having the property of blocking magnetism.
As shown in FIG. 3, the magnetic shield sheet 3 includes a hanging outer plate portion 53 and the induction heating coil 2 in the hanging outer plate portion 53 positioned between the window portions 54 in the entire outer plate 51 of the vehicle 5. Shielding sheet 3 </ b> A, 3 </ b> B disposed between and the general sheet 52 other than the hanging outer plate part 53 in the entire outer plate 51, and a reflecting sheet 3 </ b> C disposed outside the induction heating coil 2. is doing.
　以下に、本例の誘導加熱乾燥装置１につき、図１～図８を参照して詳説する。
　本例の遮蔽用シート３Ａ，３Ｂは、誘導加熱コイル２によって生じる磁界によって掛渡外板部５３が加熱されにくくするための磁性体の役割を果たすものである。
　本例の誘導加熱乾燥装置１は、電着塗装等の塗装を行った後の車両５の各部の外板５１を加熱し、各部の外板５１における塗装膜を加熱して乾燥させるために用いる。車両５は、搬送ラインによって塗装工程から乾燥工程まで搬送されるようになっている。
　ここで、車両５の各部の外板５１とは、メインボディ５０における各部としてのフェンダー、ルーフ、ピラー等の外板５１、及びメインボディ５０に組み付けた開閉部としてのドア（サイドドア）、フード（ボンネット）、ルーフ、バックドア（トランクリッド）等の外板５１のことをいう。外板５１は、鉄を用いた自動車用の鋼板である。 Hereinafter, the induction heating drying apparatus 1 of this example will be described in detail with reference to FIGS.
The shielding sheets 3 </ b> A and 3 </ b> B of this example serve as a magnetic body for making it difficult for the spanning outer plate portion 53 to be heated by the magnetic field generated by the induction heating coil 2.
The induction heating and drying apparatus 1 of this example is used to heat the outer plate 51 of each part of the vehicle 5 after coating such as electrodeposition coating, and to heat and dry the coating film on the outer plate 51 of each part. . The vehicle 5 is transported from the painting process to the drying process by a transport line.
Here, the outer plate 51 of each part of the vehicle 5 includes an outer plate 51 such as a fender, a roof, and a pillar as each part in the main body 50, a door (side door) as an opening / closing part assembled to the main body 50, and a hood. It means the outer plate 51 such as (bonnet), roof, back door (trunk lid) and the like. The outer plate 51 is a steel plate for automobiles using iron.
　図２、図３に示すごとく、誘導加熱コイル２は、電源から所定の周波数の交流電圧を両端に印加して、コイルに発生する渦電流により金属製の外板５１を加熱するよう構成してある。誘導加熱コイル２は、周波数、交流電圧等を変化させて、通電条件を変更可能である。本例の誘導加熱コイル２は、車両５の前後方向Ｌの回りに、前後方向Ｌに位置ずれしながらループして配置するよう形成されている。誘導加熱コイル２は、車両５の前後方向Ｌに連続して繋がる複数のループによって形成されている。 As shown in FIGS. 2 and 3, the induction heating coil 2 is configured to apply an alternating voltage of a predetermined frequency from a power source to both ends and heat the metal outer plate 51 by eddy current generated in the coil. is there. The induction heating coil 2 can change energization conditions by changing a frequency, an alternating voltage, or the like. The induction heating coil 2 of this example is formed so as to loop around the vehicle 5 in the front-rear direction L while being displaced in the front-rear direction L. The induction heating coil 2 is formed by a plurality of loops that are continuously connected in the front-rear direction L of the vehicle 5.
　図２に示すごとく、本例の掛渡外板部５３は、サイドガラス同士の間に形成されたピラーである。本例の車両５におけるピラーは、フロントガラス５４１と前側サイドガラス５４２との間のＡピラー５３１、前側サイドガラス５４２と中間サイドガラス５４３との間のＢピラー５３２、中間サイドガラス５４３と後側サイドガラス５４４との間のＣピラー５３３、後側サイドガラス５４４とリヤガラス５４５との間のＤピラー５３４とからなる。
　そして、図１、図２に示すごとく、本例の遮蔽用シート３Ａ，３Ｂは、Ｂピラー５３２と誘導加熱コイル２との間、Ｃピラー５３３と誘導加熱コイル２との間に配置される。また、遮蔽用シート３Ａ，３Ｂは、上下に長く形成されており、Ｂピラー５３２とその下側に位置するドア部分５２とに配置される。遮蔽用シート３Ａ，３Ｂと、反射用シート３Ｃとは、車両５の両側の側面にそれぞれ別々に配置されている。 As shown in FIG. 2, the hanging outer plate portion 53 of this example is a pillar formed between the side glasses. The pillars in the vehicle 5 of this example are the A pillar 531 between the windshield 541 and the front side glass 542, the B pillar 532 between the front side glass 542 and the intermediate side glass 543, and between the intermediate side glass 543 and the rear side glass 544. C pillar 533 and a D pillar 534 between the rear side glass 544 and the rear glass 545.
As shown in FIGS. 1 and 2, the shielding sheets 3 </ b> A and 3 </ b> B of this example are disposed between the B pillar 532 and the induction heating coil 2 and between the C pillar 533 and the induction heating coil 2. Further, the shielding sheets 3A and 3B are long in the vertical direction, and are disposed on the B pillar 532 and the door portion 52 positioned below the B pillar 532. The shielding sheets 3 </ b> A and 3 </ b> B and the reflecting sheet 3 </ b> C are separately disposed on the side surfaces on both sides of the vehicle 5.
　図４には、誘導加熱コイル２に対する内側（車両５側）に磁気シールドシート３を配置して、遮蔽用シート３Ａ，３Ｂを形成した状態を、誘導加熱コイル２及び車両５を断面にして示す。ここで、磁気シールドシート３がない場合には、誘導加熱コイル２の回りには、放射状に磁力線（磁束）Ｘが形成される（図８参照）。
　これに対し、図４に示すごとく、誘導加熱コイル２に対する内側に磁気シールドシート３を配置して遮蔽用シート３Ａ，３Ｂを形成した場合には、遮蔽用シート３Ａ，３Ｂに衝突する磁力線Ｘは、遮蔽用シート３Ａ，３Ｂを通過せずに誘導加熱コイル２の側に反射される。これにより、遮蔽用シート３Ａ，３Ｂの周辺においては、車両５の外板５１における掛渡外板部５３へ磁力線Ｘが直接通過せず、渦電流が直接的に発生しない。 FIG. 4 shows a state in which the magnetic shield sheet 3 is arranged on the inner side (vehicle 5 side) with respect to the induction heating coil 2 and the shielding sheets 3A and 3B are formed, with the induction heating coil 2 and the vehicle 5 taken as a cross section. . Here, when there is no magnetic shield sheet 3, magnetic lines of force (magnetic flux) X are formed radially around the induction heating coil 2 (see FIG. 8).
On the other hand, as shown in FIG. 4, when the magnetic shielding sheet 3 is arranged on the inner side of the induction heating coil 2 to form the shielding sheets 3A and 3B, the magnetic force lines X colliding with the shielding sheets 3A and 3B are The light is reflected on the induction heating coil 2 side without passing through the shielding sheets 3A and 3B. Thereby, in the periphery of the shielding sheets 3A and 3B, the magnetic lines of force X do not pass directly to the hanging outer plate portion 53 of the outer plate 51 of the vehicle 5, and no eddy current is directly generated.
　なお、磁気シールドシート３は、磁気を遮蔽するフィルム状の基材３１の両面に対して、樹脂フィルム層３２を形成してなる。基材３１は、鉄（Ｆｅ）に対して、シリコン（Ｓｉ）、ボロン（Ｂ）等を含有したものとすることができる。基材３１は、高透磁率であるナノ結晶軟磁性材から構成することができる。樹脂フィルム層３２は、ポリエチレンテレフタレート（ＰＥＴ）等の樹脂から構成し、これを接着剤によって基材３１に接着することができる。 The magnetic shield sheet 3 is formed by forming resin film layers 32 on both surfaces of a film-like base material 31 that shields magnetism. The base material 31 can contain silicon (Si), boron (B), etc. with respect to iron (Fe). The base material 31 can be composed of a nanocrystalline soft magnetic material having a high magnetic permeability. The resin film layer 32 is made of a resin such as polyethylene terephthalate (PET), and can be bonded to the substrate 31 with an adhesive.
　図５には、誘導加熱コイル２に対する外側（車両５と反対側）に磁気シールドシート３を配置して、反射用シート３Ｃを形成した状態を、誘導加熱コイル２及び車両５を断面にして示す。そして、誘導加熱コイル２に対する外側に磁気シールドシート３を配置して反射用シート３Ｃを形成した場合には、反射用シート３Ｃに衝突する磁力線Ｘは、反射用シート３Ｃを通過せずに車両５の側に反射される。そして、反射用シート３Ｃの周辺においては、車両５側へ磁力線Ｘを集中させ、車両５における一般部５２へ磁力線Ｘを直接通過させ、車両５における一般部５２に渦電流をより効果的に直接的に発生させることができる。 FIG. 5 shows a state in which the magnetic shield sheet 3 is arranged outside the induction heating coil 2 (on the side opposite to the vehicle 5) to form the reflection sheet 3C, with the induction heating coil 2 and the vehicle 5 taken as a cross section. . When the magnetic shield sheet 3 is disposed outside the induction heating coil 2 to form the reflecting sheet 3C, the magnetic force lines X that collide with the reflecting sheet 3C do not pass through the reflecting sheet 3C, and the vehicle 5 Reflected on the side. In the vicinity of the reflection sheet 3 </ b> C, the magnetic lines of force X are concentrated on the vehicle 5 side, the magnetic lines of force X are directly passed to the general part 52 in the vehicle 5, and the eddy current is more effectively directly applied to the general part 52 in the vehicle 5. Can be generated automatically.
　図１に示すごとく、本例の遮蔽用シート３Ａ，３Ｂと反射用シート３Ｃとは、それぞれ別々のロボット４の可動先端部４１に取り付けられている。本例の誘導加熱乾燥装置１は、車両５の側面においてＢピラー５３２の形成箇所の上下全長にわたって配置した第１遮蔽用シート３Ａと、車両５の側面においてＢピラー５３２の形成箇所とＣピラー５３３の形成箇所との間のドア部分の上下全長にわたって配置した反射用シート３Ｃと、車両５の側面においてＣピラー５３３の形成箇所の上下全長にわたって配置した第２遮蔽用シート３Ｂとを備えている。
　各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃは、車両５の両側の側面に配置されている。車両５の両側に配置される各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃは、ロボット４の可動先端部４１の移動によって位置及び姿勢を可変可能に構成されている。 As shown in FIG. 1, the shielding sheets 3 </ b> A and 3 </ b> B and the reflecting sheet 3 </ b> C of this example are attached to movable tip portions 41 of different robots 4, respectively. The induction heating and drying apparatus 1 of this example includes a first shielding sheet 3 </ b> A disposed over the entire length of the B pillar 532 formation portion on the side surface of the vehicle 5, and the B pillar 532 formation portion and C pillar 533 on the side surface of the vehicle 5. The reflective sheet 3 </ b> C disposed over the entire vertical length of the door portion between the formed portion and the second shielding sheet 3 </ b> B disposed over the entire vertical length of the formed portion of the C pillar 533 on the side surface of the vehicle 5.
Each of the shielding sheets 3 </ b> A and 3 </ b> B and the reflecting sheet 3 </ b> C is disposed on the side surfaces on both sides of the vehicle 5. Each of the shielding sheets 3 </ b> A and 3 </ b> B and the reflecting sheet 3 </ b> C disposed on both sides of the vehicle 5 is configured such that the position and posture thereof can be changed by moving the movable tip 41 of the robot 4.
　ロボット４の可動先端部４１の移動によって、各遮蔽用シート３Ａ，３Ｂと反射用シート３Ｃとの位置及び姿勢を可変させることにより、車両５の外板５１の各部の加熱しにくさと加熱しやすさとを、適宜調整することができ、車両５の外板５１の各部における加熱温度をできるだけ均等にすることができる。また、掛渡外板部５３の位置、大きさが異なる種々の車種の車両５に対して、誘導加熱乾燥装置１を適用することができる。 By moving the movable tip 41 of the robot 4, the positions and postures of the shielding sheets 3A and 3B and the reflection sheet 3C are varied, so that it is difficult to heat each part of the outer plate 51 of the vehicle 5. Easiness can be adjusted as appropriate, and the heating temperature in each part of the outer plate 51 of the vehicle 5 can be made as uniform as possible. Moreover, the induction heating drying apparatus 1 can be applied to the vehicles 5 of various vehicle types in which the position and size of the hanging outer plate portion 53 are different.
　図１、図３に示すごとく、各遮蔽用シート３Ａ，３Ｂと反射用シート３Ｃとには、周囲の温度を測定する温度センサ４２を配置しておくことができる。誘導加熱乾燥装置１は、温度センサ４２による測定温度が所定の温度になるまで、誘導加熱コイル２による加熱を行うよう構成することができる。 As shown in FIGS. 1 and 3, a temperature sensor 42 for measuring the ambient temperature can be disposed on each of the shielding sheets 3A and 3B and the reflecting sheet 3C. The induction heating drying apparatus 1 can be configured to perform heating by the induction heating coil 2 until the temperature measured by the temperature sensor 42 reaches a predetermined temperature.
　本例の誘導加熱乾燥装置１においては、次のようにして、遮蔽用シート３Ａ，３Ｂと反射用シート３Ｃとを使用することができる。
　誘導加熱コイル２に通電を行って、塗装後の車両５を乾燥させる際には、サーモカメラ等の非接触温度検出手段を用いて、車両５の外板５１の各部の温度を測定することができる。
　次いで、車両５の外板５１の各部の温度を測定した後、温度が高い部分と温度が低い部分とを確認する。この温度が高い部分は、主にＢピラー５３２の周辺及びＣピラー５３３の周辺となり、温度が低い部分は、車両５の前後方向ＬにおいてＢピラー５３２の下方位置を除く、フロントフェンダー付近、フロントドア、スライドドア（リヤドア）、リヤフェンダー付近の一般部５２となる。 In the induction heating drying apparatus 1 of this example, the shielding sheets 3A and 3B and the reflecting sheet 3C can be used as follows.
When the induction heating coil 2 is energized to dry the painted vehicle 5, the temperature of each part of the outer plate 51 of the vehicle 5 can be measured using non-contact temperature detection means such as a thermo camera. it can.
Next, after measuring the temperature of each part of the outer plate 51 of the vehicle 5, a part having a high temperature and a part having a low temperature are confirmed. The high temperature part is mainly around the B pillar 532 and the C pillar 533, and the low temperature part is near the front fender, front door, excluding the lower position of the B pillar 532 in the longitudinal direction L of the vehicle 5. The sliding door (rear door) and the general portion 52 in the vicinity of the rear fender.
　Ｂピラー５３２の周辺とＣピラー５３３の周辺との温度が高くなる理由は次のように考える。
　誘導加熱コイル２によって車両５を加熱する際には、誘導加熱コイル２から発生する磁界によって、車両５に渦電流が流れる。このとき、渦電流は、外板５１がない部分であるサイドガラスには流れない。そのため、車両５の天井部とドア部とに流れる渦電流は、外板５１としてのＢピラー５３２及びＣピラー５３３を経由して、天井部とドア部とを流れることになる。これにより、Ｂピラー５３２の周辺及びＣピラー５３３の周辺が過剰に加熱されると考えられる。
　一方、Ｂピラー５３２の下方位置を除く、ドア、フェンダー等の一般部５２においては、渦電流が通過しにくく、加熱されにくいと考えられる。 The reason why the temperatures around the B pillar 532 and the C pillar 533 increase is considered as follows.
When the vehicle 5 is heated by the induction heating coil 2, an eddy current flows through the vehicle 5 due to the magnetic field generated from the induction heating coil 2. At this time, the eddy current does not flow through the side glass where there is no outer plate 51. Therefore, the eddy current flowing through the ceiling portion and the door portion of the vehicle 5 flows through the ceiling portion and the door portion via the B pillar 532 and the C pillar 533 as the outer plate 51. Thereby, it is considered that the periphery of the B pillar 532 and the periphery of the C pillar 533 are excessively heated.
On the other hand, in the general part 52 such as a door and a fender, excluding the position below the B pillar 532, it is considered that eddy current does not easily pass and is not easily heated.
　次いで、図１～図３に示すごとく、各ロボット４の可動先端部４１の移動によって、第１遮蔽用シート３Ａを誘導加熱コイル２の内側であってＢピラー５３２の形成箇所の外側に配置し、第２遮蔽用シート３Ｂを誘導加熱コイル２の内側であってＢピラー５３２の形成箇所の外側に配置する。また、他のロボット４の可動先端部４１の移動によって、反射用シート３Ｃを車両５の前後方向ＬにおいてＢピラー５３２とＣピラー５３３との間の下方に位置する一般部５２に対向する位置であって誘導加熱コイル２の外側に配置する。
　このとき、各遮蔽用シート３Ａ，３Ｂを配置したＢピラー５３２の形成箇所及びＣピラー５３３の形成箇所においては、各遮蔽用シート３Ａ，３Ｂによって車両５への磁力線Ｘが弱められる。これにより、車両５の天井部とドア部（一般部）５２とに流れる渦電流が減少し、Ｂピラー５３２の周辺とＣピラー５３３の周辺とが加熱されにくくなる。 Next, as shown in FIGS. 1 to 3, the first shielding sheet 3 </ b> A is disposed inside the induction heating coil 2 and outside the formation position of the B pillar 532 by the movement of the movable tip 41 of each robot 4. The second shielding sheet 3 </ b> B is disposed inside the induction heating coil 2 and outside the location where the B pillar 532 is formed. Further, due to the movement of the movable tip 41 of the other robot 4, the reflective sheet 3 </ b> C is opposed to the general part 52 located below the B pillar 532 and the C pillar 533 in the longitudinal direction L of the vehicle 5. Therefore, it is arranged outside the induction heating coil 2.
At this time, the magnetic lines of force X to the vehicle 5 are weakened by the shielding sheets 3A and 3B at the formation positions of the B pillar 532 and the C pillar 533 where the shielding sheets 3A and 3B are arranged. Thereby, the eddy current which flows into the ceiling part and the door part (general part) 52 of the vehicle 5 decreases, and the periphery of the B pillar 532 and the periphery of the C pillar 533 are hardly heated.
　また、このとき、反射用シート３Ｃを配置したドア部（一般部）５２においては、反射用シート３Ｃによって車両５への磁力線Ｘが強められる。これにより、ドア部５２に流れる渦電流が増加し、ドア部５２が加熱されやすくなる。
　また、ロボット４の可動先端部４１を移動させて、反射用シート３Ｃを配置するドア部（一般部）５２を、フロントフェンダー付近、フロントドア付近、スライドドア（リヤドア）付近、リヤフェンダー付近と、適宜変更することができる。 At this time, in the door part (general part) 52 in which the reflection sheet 3C is disposed, the magnetic force lines X to the vehicle 5 are strengthened by the reflection sheet 3C. Thereby, the eddy current which flows into the door part 52 increases, and the door part 52 becomes easy to be heated.
Further, the movable tip 41 of the robot 4 is moved, and the door part (general part) 52 on which the reflection sheet 3C is arranged is arranged near the front fender, near the front door, near the slide door (rear door), near the rear fender, It can be changed as appropriate.
　そして、各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃに配置した温度センサ４２による測定温度が所定の温度になるまで、誘導加熱コイル２による加熱を継続する。また、温度センサ４２によって各遮蔽用シート３Ａ，３Ｂの周囲及び反射用シート３Ｃの周囲の温度を測定する際には、各ロボット４の可動先端部４１を移動させて、各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃを、車両５の側方に近づけたり、車両５の側方から遠ざけたりすることができる。
　その後、車両５の全体が目標とする温度に加熱され、塗装膜が乾燥したときには、誘導加熱コイル２による加熱を終了することができる。 And the heating by the induction heating coil 2 is continued until the temperature measured by the temperature sensor 42 disposed on each of the shielding sheets 3A and 3B and the reflecting sheet 3C reaches a predetermined temperature. Further, when the temperature around the shielding sheets 3A and 3B and the surroundings of the reflection sheet 3C is measured by the temperature sensor 42, the movable tip 41 of each robot 4 is moved to move the shielding sheets 3A and 3B. The 3B and the reflection sheet 3C can be brought closer to the side of the vehicle 5 or away from the side of the vehicle 5.
Thereafter, when the entire vehicle 5 is heated to a target temperature and the coating film is dried, heating by the induction heating coil 2 can be terminated.
　他の誘導加熱乾燥装置１として、図６、図７に示すごとく、各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃは、誘導加熱コイル２に対して固定して設けることもできる。そして、各遮蔽用シート３Ａ，３Ｂ及び反射用シート３Ｃは、車両５の前後方向Ｌの回りに一巡して形成することができる。図７においては、右半分に遮蔽用シート３Ａ，３Ｂを配置した断面を示し、左半分に反射用シート３Ｃを配置した断面を示す。
　また、図示は省略するが、誘導加熱コイル２は、車両５の前後方向Ｌの回りにループして形成する以外にも、種々の構成とすることができる。例えば、誘導加熱コイル２は、車両５の左右の側面、車両５の天面、車両５の前面、車両５の後面に対して、それぞれ別々に対向するように形成することができる。 As another induction heating drying apparatus 1, as shown in FIGS. 6 and 7, the shielding sheets 3 </ b> A and 3 </ b> B and the reflection sheet 3 </ b> C can be fixed to the induction heating coil 2. Each of the shielding sheets 3 </ b> A and 3 </ b> B and the reflecting sheet 3 </ b> C can be formed around the vehicle 5 in the front-rear direction L. FIG. 7 shows a cross section in which the shielding sheets 3A and 3B are arranged on the right half, and a cross section in which the reflection sheet 3C is arranged on the left half.
Although illustration is omitted, the induction heating coil 2 can have various configurations other than being formed by looping around the longitudinal direction L of the vehicle 5. For example, the induction heating coil 2 can be formed so as to face the left and right side surfaces of the vehicle 5, the top surface of the vehicle 5, the front surface of the vehicle 5, and the rear surface of the vehicle 5, respectively.
　本例の誘導加熱乾燥装置１は、誘導加熱コイル２と磁気シールドシート３とを備えるものである。そして、磁気シールドシート３の用い方に工夫を行い、磁気シールドシート３を、誘導加熱コイル２に対して内側（車両５側）に配置するか、誘導加熱コイル２に対して外側（車両５と反対側）に配置するかによって、遮蔽用シート３Ａ，３Ｂと反射用シート３Ｃとに切り分けている。 The induction heating and drying apparatus 1 of this example includes an induction heating coil 2 and a magnetic shield sheet 3. Then, the method of using the magnetic shield sheet 3 is devised, and the magnetic shield sheet 3 is arranged on the inner side (the vehicle 5 side) with respect to the induction heating coil 2 or on the outer side (with the vehicle 5). Depending on whether they are arranged on the opposite side, the sheet is divided into the shielding sheets 3A and 3B and the reflecting sheet 3C.
　遮蔽用シート３Ａ，３Ｂは、誘導加熱コイル２に対する内側に配置され、車両５の外板５１における掛渡外板部５３（Ｂピラー５３２及びＣピラー５３３）と誘導加熱コイル２との間に配置される。車両５の外板５１の掛渡外板部５３においては、誘導加熱コイル２に通電を行ったときに生じる磁界は、遮蔽用シート３Ａ，３Ｂによって、掛渡外板部５３に直接当たらないように遮断される。これにより、外板５１の一般部５２に比べて流路断面積が縮小し、外板５１の一般部５２に比べて渦電流が流れやすい掛渡外板部５３に対しては、誘導加熱コイル２による磁界が直接当たらないようにすることができる。そのため、掛渡外板部５３が過度に加熱されることを防止することができる。 The shielding sheets 3 </ b> A and 3 </ b> B are arranged inside the induction heating coil 2, and are arranged between the hanging outer plate portion 53 (the B pillar 532 and the C pillar 533) and the induction heating coil 2 in the outer plate 51 of the vehicle 5. Is done. In the hanging outer plate portion 53 of the outer plate 51 of the vehicle 5, the magnetic field generated when the induction heating coil 2 is energized does not directly hit the hanging outer plate portion 53 by the shielding sheets 3A and 3B. Will be blocked. As a result, the flow passage cross-sectional area is reduced as compared with the general portion 52 of the outer plate 51, and the induction heating coil is used for the hanging outer plate portion 53 where eddy current tends to flow as compared with the general portion 52 of the outer plate 51. The magnetic field by 2 can be prevented from being directly applied. Therefore, it is possible to prevent the hanging outer plate portion 53 from being heated excessively.
　反射用シート３Ｃは、車両５の外板５１における一般部５２の外側において、誘導加熱コイル２に対する外側に配置される。車両５の外板５１の一般部５２においては、誘導加熱コイル２に通電を行ったときに生じる磁界は、遮蔽用シート３Ａ，３Ｂによって多くが反射され、一般部５２に当てられる。これにより、外板５１の一般部５２に対しては、誘導加熱コイル２による磁界が当たりやすくすることができる。そのため、一般部５２を加熱しやすくすることができる。 The reflection sheet 3 </ b> C is disposed outside the general portion 52 in the outer plate 51 of the vehicle 5 and outside the induction heating coil 2. In the general part 52 of the outer plate 51 of the vehicle 5, most of the magnetic field generated when the induction heating coil 2 is energized is reflected by the shielding sheets 3 </ b> A and 3 </ b> B and applied to the general part 52. Thereby, the general part 52 of the outer plate 51 can be easily subjected to a magnetic field by the induction heating coil 2. Therefore, the general part 52 can be easily heated.
　このように、誘導加熱乾燥装置１においては、加熱されやすい掛渡外板部５３は加熱しにくくすることができ、加熱されにくい一般部５２は加熱しやすくすることができる。これにより、外板５１の一般部５２と掛渡外板部５３との全体をできるだけ均一に加熱し、車両５の外板５１の全体をできるだけ均一に乾燥させることができる。 Thus, in the induction heating and drying apparatus 1, the hanging outer plate portion 53 that is easily heated can be made difficult to heat, and the general portion 52 that is difficult to be heated can be easily heated. Thereby, the whole of the general part 52 of the outer plate 51 and the entire outer plate part 53 can be heated as uniformly as possible, and the entire outer plate 51 of the vehicle 5 can be dried as uniformly as possible.
（実施例２）
　本例は、図９、図１０に示すごとく、上記実施例１に示した磁気シールドシート３を用いずに、誘導加熱コイル２によって生じる磁界による掛渡外板部５３への加熱を抑制するための磁性体を形成した例である。
　本例の誘導加熱コイル２は、上記実施例１と同様に、車両５の前後方向Ｌの回りに、前後方向Ｌに位置ずれしながらループして配置するよう形成されている。
　そして、本例の磁性体は、環形状の銅板である環状磁性体３Ｘから形成されており、この環状磁性体３Ｘは、誘導加熱コイル２と外板５１との間であって、掛渡外板部５３（Ｂピラー５３２及びＣピラー５３３）に対向する部位において、前後方向Ｌの回りにループして配置される。 (Example 2)
In this example, as shown in FIGS. 9 and 10, the magnetic shield sheet 3 shown in Example 1 is not used, and the heating to the hanging outer plate portion 53 due to the magnetic field generated by the induction heating coil 2 is suppressed. This is an example of forming a magnetic material.
The induction heating coil 2 of this example is formed so as to loop around the vehicle 5 in the front-rear direction L while being displaced in the front-rear direction L, as in the first embodiment.
And the magnetic body of this example is formed from the annular magnetic body 3X which is a ring-shaped copper plate, and this annular magnetic body 3X is between the induction heating coil 2 and the outer plate | board 51, and is outside a bridge | crossover. In a portion facing the plate portion 53 (the B pillar 532 and the C pillar 533), it is arranged in a loop around the front-rear direction L.
　環状磁性体３Ｘは、誘導加熱コイル２による渦電流と逆向きの渦電流を流すために、誘導加熱コイル２の前後方向Ｌの一部分の内周側にループして形成されている。本例の環状磁性体３Ｘは、車両５を横方向に切断したときの略四角断面形状に応じて、四角環形状に形成されている。また、渦電流を効果的に流すために、環状磁性体３Ｘは、絶縁体等を介して誘導加熱コイル２の内周側に配設されている。より具体的には、環状磁性体３Ｘは、ループを形成する周方向における複数箇所において、誘導加熱コイル２の内周側に配設した絶縁体等によって誘導加熱コイル２に取り付けられている。 The annular magnetic body 3X is formed in a loop on the inner peripheral side of a part in the front-rear direction L of the induction heating coil 2 in order to flow an eddy current in a direction opposite to the eddy current generated by the induction heating coil 2. The annular magnetic body 3X of this example is formed in a square ring shape according to a substantially square cross-sectional shape when the vehicle 5 is cut in the lateral direction. Moreover, in order to flow an eddy current effectively, the annular magnetic body 3X is disposed on the inner peripheral side of the induction heating coil 2 via an insulator or the like. More specifically, the annular magnetic body 3X is attached to the induction heating coil 2 by an insulator or the like disposed on the inner peripheral side of the induction heating coil 2 at a plurality of locations in the circumferential direction forming the loop.
　掛渡外板部５３へ流れる渦電流の量は、環状磁性体３Ｘの厚み、環状磁性体３Ｘと外板５１との距離、環状磁性体３Ｘと誘導加熱コイル２との距離を変更することによって調整することができる。
　また、環状磁性体３Ｘは、車両５の両側面に位置する掛渡外板部５３に対向する両側部の前後方向Ｌの幅を大きく形成し、車両５の上面及び下面に対向する上部及び下部の前後方向Ｌの幅を小さくして形成することもできる。 The amount of eddy current flowing to the hanging outer plate portion 53 is changed by changing the thickness of the annular magnetic body 3X, the distance between the annular magnetic body 3X and the outer plate 51, and the distance between the annular magnetic body 3X and the induction heating coil 2. Can be adjusted.
In addition, the annular magnetic body 3X has a large width in the front-rear direction L on both sides facing the hanging outer plate portion 53 located on both sides of the vehicle 5, and upper and lower portions facing the upper and lower surfaces of the vehicle 5. The width in the front-rear direction L can be reduced.
　本例においては、掛渡外板部５３に対向する部位の全周においては、誘導加熱コイル２によって生じる磁界とは逆向きの磁界を、環状磁性体３Ｘに発生させることができる。これにより、掛渡外板部５３に対向する部位の全周においては、誘導加熱コイル２による磁界によって発生させる渦電流を、環状磁性体３Ｘによって発生させる渦電流によって打ち消すことができる。そのため、掛渡外板部５３に対向する部位の全周は、できるだけ加熱しないようにすることができる。なお、掛渡外板部５３に対向する部位の全周に対し、外板５１における掛渡外板部５３以外の一般部５２は、誘導加熱コイル２による渦電流によって加熱することができる。 In this example, a magnetic field in the opposite direction to the magnetic field generated by the induction heating coil 2 can be generated in the annular magnetic body 3X on the entire circumference of the portion facing the hanging outer plate portion 53. As a result, the eddy current generated by the magnetic field generated by the induction heating coil 2 can be canceled by the eddy current generated by the annular magnetic body 3X on the entire circumference of the portion facing the hanging outer plate portion 53. Therefore, it is possible to prevent the entire circumference of the portion facing the hanging outer plate portion 53 from being heated as much as possible. It should be noted that the general portion 52 of the outer plate 51 other than the hanging outer plate portion 53 can be heated by the eddy current generated by the induction heating coil 2 with respect to the entire circumference of the portion facing the hanging outer plate portion 53.
　こうして、加熱されやすい掛渡外板部５３は加熱しにくくすることができる。これにより、外板５１の一般部５２と掛渡外板部５３との全体をできるだけ均一に加熱し、車両５の外板５１の全体をできるだけ均一に乾燥させることができる。
　本例においても、誘導加熱乾燥装置１のその他の構成は上記実施例１と同様であり、上記実施例１と同様の作用効果を得ることができる。 In this way, it is possible to make it difficult to heat the overhanging plate portion 53 that is easily heated. Thereby, the whole of the general part 52 of the outer plate 51 and the entire outer plate part 53 can be heated as uniformly as possible, and the entire outer plate 51 of the vehicle 5 can be dried as uniformly as possible.
Also in this example, the other structure of the induction heating drying apparatus 1 is the same as that of the first embodiment, and the same effect as that of the first embodiment can be obtained.

Claims (8)

  1. 　車両の外板の外側から誘導加熱を行って、該外板の表面を乾燥させる誘導加熱コイルと、
    　該誘導加熱コイルと、上記車両の外板全体において窓部分同士の間に位置する掛渡外板部との間に配置され、上記誘導加熱コイルによって生じる磁界による上記掛渡外板部への加熱を抑制するための磁性体と、を備えていることを特徴とする誘導加熱乾燥装置。     An induction heating coil for performing induction heating from the outside of the outer plate of the vehicle and drying the surface of the outer plate;
    The induction heating coil is arranged between the window portions located between the window portions in the entire outer plate of the vehicle, and the heating of the extension outer plate portion by the magnetic field generated by the induction heating coil is performed. An induction heating and drying apparatus comprising: a magnetic body for suppressing heat.
  2. 　請求項１に記載の誘導加熱乾燥装置において、上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、
    　上記磁性体は、上記誘導加熱コイルと上記掛渡外板部との間に配置され、磁気を遮断する性質を有するシート形状の磁気シールドシートからなる遮蔽用シートであることを特徴とする誘導加熱乾燥装置。     The induction heating drying apparatus according to claim 1, wherein the induction heating coil is formed so as to be arranged in a loop around the front-rear direction of the vehicle while being displaced in the front-rear direction.
    The magnetic body is a shielding sheet which is disposed between the induction heating coil and the hanging outer plate and is made of a sheet-shaped magnetic shield sheet having a property of shielding magnetism. Drying equipment.
  3. 　請求項１に記載の誘導加熱乾燥装置において、上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、
    　磁気を遮断する性質を有するシート形状の磁気シールドシートからなり、上記誘導加熱コイルと上記掛渡外板部との間に上記磁性体として配置する遮蔽用シートと、
    　磁気を遮断する性質を有するシート形状の磁気シールドシートからなり、上記外板のうち上記掛渡外板部以外の一般部に対向する上記誘導加熱コイルの部位の外側に配置する反射用シートと、を備えていることを特徴とする誘導加熱乾燥装置。     The induction heating drying apparatus according to claim 1, wherein the induction heating coil is formed so as to be arranged in a loop around the front-rear direction of the vehicle while being displaced in the front-rear direction.
    A sheet of magnetic shielding sheet having a property of blocking magnetism, and a shielding sheet disposed as the magnetic body between the induction heating coil and the hanging outer plate part;
    A sheet of magnetic shielding sheet having a property of blocking magnetism, and a reflection sheet disposed outside the induction heating coil portion facing the general portion other than the hanging outer plate portion of the outer plate; An induction heating drying apparatus comprising:
  4. 　請求項３に記載の誘導加熱乾燥装置において、上記遮蔽用シートと上記反射用シートとは、それぞれ別々のロボットの可動先端部に取り付けられており、かつ、該ロボットの可動先端部の移動によって位置及び姿勢を可変可能に構成されていることを特徴とする誘導加熱乾燥装置。 4. The induction heating and drying apparatus according to claim 3, wherein the shielding sheet and the reflecting sheet are attached to movable tip portions of different robots, respectively, and are positioned by movement of the movable tip portion of the robot. And an induction heating drying apparatus characterized in that the posture can be varied.
  5. 　請求項３又は４に記載の誘導加熱乾燥装置において、上記遮蔽用シートと上記反射用シートとには、周囲の温度を測定する温度センサが配置されており、
    　該温度センサによる測定温度が所定の温度になるまで、上記誘導加熱コイルによる加熱を行うよう構成されていることを特徴とする誘導加熱乾燥装置。     In the induction heating drying apparatus according to claim 3 or 4, a temperature sensor for measuring an ambient temperature is disposed on the shielding sheet and the reflection sheet,
    The induction heating drying apparatus is configured to perform heating by the induction heating coil until a temperature measured by the temperature sensor reaches a predetermined temperature.
  6. 　請求項１に記載の誘導加熱乾燥装置において、上記誘導加熱コイルは、上記車両の前後方向の回りに、該前後方向に位置ずれしながらループして配置するよう形成されており、
    　上記磁性体は、上記誘導加熱コイルと上記外板との間であって、上記掛渡外板部に対向する部位において、上記前後方向の回りにループして配置される環状磁性体であることを特徴とする誘導加熱乾燥装置。     The induction heating drying apparatus according to claim 1, wherein the induction heating coil is formed so as to be arranged in a loop around the vehicle in the front-rear direction while being displaced in the front-rear direction.
    The magnetic body is an annular magnetic body disposed between the induction heating coil and the outer plate and looped around the front-rear direction at a portion facing the hanging outer plate portion. Induction heating drying device characterized by.
  7. 　請求項６に記載の誘導加熱乾燥装置において、上記環状磁性体は、環形状の銅板であることを特徴とする誘導加熱乾燥装置。 7. The induction heating drying apparatus according to claim 6, wherein the annular magnetic body is an annular copper plate.
  8. 　請求項１～７のいずれか一項に記載の誘導加熱乾燥装置において、上記掛渡外板部は、フロントガラスとサイドガラスとの間、サイドガラス同士の間、サイドガラスとリヤガラスとの間、サンルーフとフロントガラス、サイドガラス又はリヤガラスとの間に形成された部分の少なくともいずれかであることを特徴とする誘導加熱乾燥装置。 The induction heating drying apparatus according to any one of Claims 1 to 7, wherein the spanning outer plate portion is provided between the windshield and the side glass, between the side glasses, between the side glass and the rear glass, and between the sun roof and the front glass. An induction heating drying apparatus characterized by being at least one of a portion formed between glass, side glass, and rear glass.
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JP2015140989A (en) * 2014-01-29 2015-08-03 富士電機株式会社 Coating and drying device and coating and drying method
WO2016000826A3 (en) * 2014-07-04 2016-03-03 Dürr Systems GmbH Painting method and painting facility for producing a decorative coating
RU2669636C2 (en) * 2014-07-04 2018-10-12 Дюрр Системз Аг Painting method and painting apparatus for producing a decorative coating
US10933443B2 (en) 2014-07-04 2021-03-02 Dürr Systems Ag Painting method and painting facility for producing a decorative coating

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