Rapid coupling devices, induction heating devices, production lines, and methods for maintaining such induction heating devices.

Abstract

The present invention relates to a rapid coupling device (10) for an induction heating device (40) for heating a metal workpiece, the rapid coupling device (10) having a first coupling half (20) and a second coupling half (30) corresponding to the first coupling half (20). The rapid coupling device (10) is movable between an open position and a closed position by relative motion between the first coupling half (20) and the second coupling half (30), and when the rapid coupling device (10) is in the closed position, a first electrical main connection device (22) is electrically connected to a second electrical main connection device (32), thereby enabling the transmission of a current having a current strength of 1000 amperes or more between the first electrical main connection device (22) and the second electrical main connection device (32) when the rapid coupling device (10) is in the closed position.

Description

Technical Field

[0001] The present invention relates to a quick coupling device for an induction heating apparatus. Further, the present invention relates to an induction heating apparatus for heating a metal workpiece. Further, the present invention relates to a production line for manufacturing and / or processing a metal workpiece.

[0002] Finally, the present invention relates to a method for maintaining an induction heating apparatus using a quick coupling device.

Background Art

[0003] Well-known induction heating apparatuses for heating a metal workpiece passing therethrough have coils that are stationary with respect to the metal workpiece and / or adjustable in position in a direction perpendicular and / or horizontal to the conveyance direction of the metal workpiece, and the metal workpiece passes by each coil in the conveyance direction.

[0004] The coils of well-known induction heating apparatuses receive a supply of electrical energy from an electrical energy source by means of power electronics components such as transformers, inverters, converters, and capacitors. The electrical connection between the power electronics components and the coils is made by cables or busbars and is installed as short as possible in order to minimize the resulting output losses.

[0005] In particular, the degree of freedom of motion of a coil in the horizontal direction relative to the conveying direction of a metal workpiece is limited by the electrical connection between the power electronics component and the coil. With busbar connections, relative motion between the power electronics component and the coil is not possible. With cable connections, the maximum horizontal displacement of the coil is limited by the length of the electrical cable. If the cable is made longer to increase the maximum horizontal displacement, the power loss increases based on the increased cable length. Especially in high-power induction heating equipment, requirements related to component dimensions such as cable thickness and component size, requirements related to the cooling of the induction heating equipment, and challenging environmental conditions make coil displacement extremely costly.

[0006] Finally, electrical connections between one or more coils and power electronics components limit maintenance of both the power electronics components and the coils. On the one hand, low degrees of freedom make access to power electronics components difficult. On the other hand, because electrical connections must be disconnected manually, coil maintenance can only be performed when the production line is shut down. This leads to long maintenance times and, consequently, increased production interruptions. [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] The object of the present invention is to provide a rapid coupling device for an induction heating device that can shorten the maintenance time of the induction heating device. [Means for solving the problem]

[0008] The underlying problem of the present invention is solved by a rapid coupling device having the features of claim 1. Advantageous embodiments of the rapid coupling device are described in the claims dependent on claim 1.

[0009] More precisely, the problem underlying the present invention is solved by a rapid coupling device for an induction heating device for heating a metal workpiece, the rapid coupling device having a first coupling half, the first coupling half having a first fixing device and a first electrical main connection device. The rapid coupling device has a second coupling half corresponding to the first coupling half, the second coupling half having a second fixing device corresponding to the first fixing device and a second electrical main connection device corresponding to the first electrical main connection device. The rapid coupling device is movable between an open position and a closed position by relative motion between a first coupling half and a second coupling half. When the rapid coupling device is in the closed position, the first fixing device is coupled to the second fixing device in a frictional joint manner, and the first main connecting device is electrically connected to the second main electrical connecting device. When the rapid coupling device is in the closed position, a current having a current strength of 1000 amperes or more, preferably alternating current, can be transmitted between the first main electrical connecting device and the second main electrical connecting device.

[0010] In the following, when describing the use of a rapid coupling device in a manner appropriate to its intended purpose, or its application in a manner appropriate to its intended purpose, it refers to the use and / or application of a rapid coupling device in an induction heating device.

[0011] The rapid coupling device configured in this way has the advantage that, when used in accordance with the intended application of the rapid coupling device, the rapid coupling device automatically moves to the closed position when one or more coils of the induction heating device move to their respective working positions, and at that time, an electrical connection is automatically established between one or more coils and the energy supply device. For this purpose, for example, the first coupling half is connected to the energy supply device such that the first electrical main connection device is electrically connected to the energy supply device. The second coupling half is connected to one or more coils such that the second electrical main connection device is electrically connected to one or more coils. When one or more coils simply move to the working position, the rapid coupling device moves to the closed position, thereby coupling the first electrical main connection device of the first coupling half with the second electrical main connection device of the second coupling half, thereby automatically establishing an electrical connection between the energy supply device and one or more coils. In other words, when one or more coils move to the working position, relative motion is induced between the first and second coupling halves, thereby moving the rapid coupling device to the closed position. When one or more coils move to their respective standby or maintenance positions, the rapid coupling device automatically moves to its open position, at which point the electrical connection between one or more coils and the energy supply device is disconnected. To this end, when one or more coils move to their respective standby or maintenance positions, the first main electrical connection device of the first coupling half is separated from the second main electrical connection device of the second coupling half. In other words, when one or more coils move to their respective standby and / or maintenance positions, relative motion is induced between the first and second coupling halves, thereby moving the rapid coupling device to the open position. This reduces the maintenance time of the induction heating device.

[0012] Another advantage of this type of rapid coupling device is that, when used in a manner suited to the application of the rapid coupling device, the induction heating device has a reduced number of connections that are constantly present between the coil and the energy supply device. This further reduces the maintenance time of the induction heating device.

[0013] Furthermore, a rapid coupling device configured in this way has the advantage that, when used in accordance with the intended application of the rapid coupling device, it is always guaranteed that the induction heating device will switch to a standby or maintenance position with no power supplied. This reduces the risk to maintenance personnel.

[0014] Two corresponding parts (for example, a first joint half and a second joint half, a first fixing device and a second fixing device, a first electrical main connection device and a second electrical main connection device) can be connected to each other in action, or are connected to each other in action. In particular, two corresponding parts can be connected to each other in mechanical and / or electrical and / or hydrodynamic ways, or are connected to each other in action.

[0015] Preferably, the rapid coupling device is capable of moving from an open position to a closed position in a first direction of movement.

[0016] The rapid coupling device is preferably capable of moving from a closed position to an open position in a second direction of movement. The second direction of movement is preferably opposite to the first direction of movement.

[0017] When the rapid coupling device is in the open position, the first fixed device is separated from the second fixed device, particularly mechanically, and the first electrical main connection device is electrically separated from the second electrical main connection device.

[0018] When the rapid coupling device moves from the open position to the closed position, an electrical connection is established between the first electrical main connecting device and the second electrical main connecting device, thereby enabling the transmission of current between the first electrical main connecting device and the second electrical main connecting device.

[0019] The rapid coupling device is preferably configured such that it can move between an open position and a closed position by translational relative motion and / or rotational relative motion between a first coupling half and a second coupling half.

[0020] The rapid coupling device is preferably configured such that, when the rapid coupling device is in the closed position, the first fixing device is coupled to the second fixing device by a frictional coupling and / or by a negative pressure coupling, preferably by a hydrodynamic negative pressure coupling.

[0021] A hydrodynamic negative pressure coupling may be configured as a pneumatic and / or hydraulic negative pressure coupling.

[0022] The rapid coupling device configured in this manner has the advantage of easily establishing and / or disabling a friction-type coupling between the first fixing device and the second fixing device.

[0023] The rapid coupling device is preferably configured such that, when the rapid coupling device is in the closed position, the first fixing device is additionally coupled to the second fixing device in a shape-joint manner.

[0024] A rapid coupling device configured in this way has the advantage of providing a more stable connection between the first coupling half and the second coupling half.

[0025] The first fixing device may be configured as a quick clamp lock, and the second fixing device may be configured as a retractable nipple corresponding to the quick clamp lock. In other words, the first fixing device and the second fixing device can form a component of a quick clamp device.

[0026] The rapid coupling device configured in this manner has the advantage of being able to establish and / or disengage the coupling between the first coupling half and the second coupling half even more quickly.

[0027] The quick coupling device is preferably configured such that the first fixing device has a first recess formed in a first joint surface of the first joint half body, and the second fixing device has a first protrusion extending from the second joint surface in the direction of the first joint surface of the first joint half body, preferably extending orthogonally. When the quick coupling device transitions to the closed position, the first protrusion is received in the first recess and engages rearwardly, whereby when the quick coupling device is in the closed position, the first fixing device is joined to the second fixing device in a form-fitting manner.

[0028] The quick coupling device configured in this way has the advantage that the connection between the first joint half body and the second joint half body is further improved.

[0029] When the quick coupling device is in the closed position, the joint surface of the first joint half body is arranged to face the joint surface of the second joint half body and preferably contacts this, at least indirectly, preferably directly.

[0030] The first recess may be configured as a blind hole. The first recess can have at least one material protrusion arranged on the inner wall of the first recess, and this material protrusion is configured to engage rearwardly with the first protrusion, preferably in the region of a notch and / or groove of the first protrusion.

[0031] The first protrusion may be configured as a cylindrical protrusion, preferably as a pin or bolt. The first protrusion can have a notch and / or groove. The first protrusion can be engaged by the material protrusion of the first recess in the region of the notch and / or the region of the groove.

[0032] The first fixing device can have a second recess formed in the first joint surface of the first joint half body, and the second fixing device can have a second protrusion arranged on the second joint surface of the second fixing device. The second protrusion can extend from the second joint surface in the direction of the first joint surface, preferably orthogonally.

[0033] The first fixing device may have a first fixing member and / or a second fixing member. When the rapid coupling device moves to the closed position, the first projection is housed in the first recess and the second projection is housed in the second recess. The first and second fixing members are movable between an open position and a locked position, respectively. When the rapid coupling device is in the closed position, the first fixing member moves to the locked position, causing the first fixing member to rear-engage with the first projection. When the rapid coupling device is in the closed position, the second fixing member moves to the locked position, causing the second fixing member to rear-engage with the second projection.

[0034] The first and / or second fixing member is preferably movable between an open position and a locked position in a fixing member movement direction that extends laterally with respect to the first movement direction of the rapid coupling device. The fixing member movement direction is preferably perpendicular to the first movement direction of the rapid coupling device.

[0035] The first electrical main connection device is preferably located on the first coupling surface of the first joint half, and the second electrical main connection device is preferably located on the second coupling surface of the second joint half. The first electrical main connection device and the second electrical main connection device may be configured as electrical contact plates.

[0036] The rapid coupling device is preferably configured such that the first coupling half has a first guide device and the second coupling half has a second guide device, and the first coupling half and the second coupling half are guided by the first guide device and the second guide device at least in a lateral direction with respect to the first direction of movement, and preferably to be centered, when the rapid coupling device moves to the closed position.

[0037] The rapid coupling device configured in this way has the advantage of being able to connect the first electrical main connection device to the second electrical main connection device with improved precision. As a result, current can be transmitted between the first and second electrical main connection devices with reduced losses.

[0038] Preferably, the first and second coupling halves are guided by the first and second guide devices so that, when the rapid coupling device moves to the closed position, the first and second coupling halves are centered and aligned with respect to each other at least in the lateral direction at the closed position of the rapid coupling device. Preferably, the lateral direction is perpendicular to the first direction of movement of the rapid coupling device.

[0039] A rapid coupling device configured in this way has the advantage that the first electrical main connection device is connected to the second electrical main connection device with improved precision. As a result, current can be transmitted between the first and second electrical main connection devices with further reduced losses.

[0040] The first guide device and the first fixing device may be configured as a single component. The second guide device and the second fixing device may be configured as a single component.

[0041] In particular, the first guide device and the first fixed device may be monolithically coupled to each other. In particular, the second guide device and the second fixed device may be monolithically coupled to each other.

[0042] The first guide device may be configured as the entrance area of ​​the recess of the first fixed device. The entrance area of ​​the recess may have a wider free cross-section than the rest of the recess. The free cross-section of the entrance area can transition continuously to the free cross-section of the rest of the recess.

[0043] The second guide device may be configured as a tapered end portion of a projection, particularly a cylindrical projection, of the second fixing device.

[0044] The rapid coupling device is preferably configured such that a first coupling half has a first fluid connection device and a second coupling half has a second fluid connection device corresponding to the first fluid connection device, and when the rapid coupling device is in the closed position, the first fluid connection device is fluidly connected to the second fluid connection device.

[0045] A rapid coupling device configured in this manner has the advantage that, when used in a manner appropriate to the application of the rapid coupling device, a fluid connection can be automatically and additionally established between the first coupling half and the second coupling half when the rapid coupling device moves to the closed position. For example, a cooling fluid for cooling electrical wires can be transmitted in this manner. Furthermore, it may be possible to transmit, for example, a process fluid in general.

[0046] The first fluid connection device and the second fluid connection device may be configured to transmit hydraulic fluid, cooling fluid (e.g., cooling water), compressed air, or other fluid between the first and second joint halves.

[0047] The rapid coupling device is preferably configured such that a first coupling half has a first electrical subconnection device and a second coupling half has a second electrical subconnection device corresponding to the first electrical subconnection device, and when the rapid coupling device is in the closed position, the first electrical subconnection device is electrically connected to the second electrical subconnection device.

[0048] The rapid coupling device configured in this way has the advantage that, when used in accordance with the intended application of the rapid coupling device, an additional electrical connection for supplying power to the auxiliary components of the induction heating device is automatically made when the rapid coupling device moves to the closed position. Furthermore, the induction heating device with the rapid coupling device has a further reduced number of permanently present connections between the coil and the electrical energy source. This further reduces the maintenance time of the induction heating device.

[0049] When the rapid coupling device is in the closed position, one or more sub-components can receive electrical energy through a conductive connection between a first electrical sub-connection device and a second electrical sub-connection device.

[0050] The sub-components may be configured as cooling devices, display devices for electronic control devices, motion actuators, and / or sub-components for induction heating devices, and / or production lines for manufacturing, and / or for the machining of metal workpieces, or other sub-components.

[0051] The rapid coupling device is preferably configured such that the first coupling half has a first protective device for protecting the first coupling half from contamination.

[0052] The first protective device may be transitionable between an open position and a closed position. When in the closed position, the first protective device at least partially covers the first coupling surface of the first joint half. The first protective device can be automatically transitioned to the open position of the first protective device mechanically, electrically, pneumatically, and / or hydraulically when the rapid coupling device moves to the closed position. In other words, the rapid coupling device moving to the closed position automatically triggers the first protective device to move to the open position. The first protective device may be configured as a mechanically movable housing.

[0053] The rapid coupling device configured in this manner has the advantage that the first coupling surface of the first coupling half is protected from environmental factors, particularly from fouling.

[0054] The second joint half may have a second protective device for protecting the second joint half from contamination. The second protective device may be movable between an open position and a closed position. When in the closed position, the second protective device covers at least partially the second joint surface of the second joint half. The second protective device can be automatically moved to the open position of the second protective device mechanically, electrically, pneumatically, and / or hydraulically when the rapid coupling device moves to the closed position. In other words, the rapid coupling device moving to the closed position automatically triggers the second protective device to move to the open position. The second protective device may be configured as a mechanically movable housing.

[0055] Alternatively or as an addition, the second joint half may have an operating device corresponding to the first protective device of the first joint half. When the rapid joint device moves to the closed position, the operating device of the second joint half operates the first protective device of the first joint half by mechanical contact of the operating device with the first protective device, thereby moving the first protective device to the open position. In other words, when the rapid joint device moves to the closed position, there is a mechanical interaction between the first protective device of the first joint half and the operating device of the second joint half.

[0056] The operating device may have at least one, preferably two, operating projections extending from the second joint half toward the first joint half. The operating projections may be configured as pins or bolts.

[0057] The rapid coupling device is preferably configured such that the first coupling half has a first cleaning device for cleaning and / or protecting the first coupling half from dirt.

[0058] The rapid coupling device configured in this manner has the advantage of enabling an improved electrical connection between the first electrical main connection device and the second electrical main connection device. This further reduces electrical losses when current is transmitted between the first electrical main connection device and the second electrical main connection device.

[0059] The first cleaning device may have a first compressed air nozzle, which is configured to apply compressed air at least partially to the first joint surface of the first joint half.

[0060] The first cleaning device may have another compressed air nozzle, which is configured to generate and maintain overpressure in the first coupled volume section separated by the first coupling surface and the first protective device. Alternatively or in addition, the first compressed air nozzle may also be configured to generate and maintain overpressure in the first coupled volume section.

[0061] The rapid coupling device configured in this manner has the advantage that the first coupling surface and / or the first fixing device of the first coupling half are better protected from contamination. This further reduces electrical losses when current is transmitted by the first electrical main connection device.

[0062] The second joint half may have a second cleaning device for cleaning and / or protecting the second joint half from dirt. The second cleaning device may have a second compressed air nozzle, which is configured to apply compressed air at least partially to the second joint surface of the second joint half.

[0063] The second cleaning device may have another compressed air nozzle, which is configured to generate and maintain overpressure in the second coupled volume section separated by the second coupled surface and the second protective device. Alternatively or in addition, the second compressed air nozzle may also be configured to generate and maintain overpressure in the second coupled volume section.

[0064] Furthermore, an object of the present invention is to provide an induction heating device for heating metal workpieces that can be maintained with a shortened maintenance time.

[0065] The problem underlying this invention is solved by an induction heating device having the features of claim 8 of the present invention. Advantageous embodiments of the induction heating device are described in the claims dependent on claim 8.

[0066] More precisely, the problem underlying the present invention is solved by an induction heating device for heating a metal workpiece, having at least one first coil that is movable between a standby position and a working position for generating a magnetic field for heating the metal workpiece, and the induction heating device has at least one first rapid coupling device as described above. The at least one first coil is electrically connectable to an energy supply device by the first rapid coupling device, the first electrical main connection device of the first coupling half of the first rapid coupling device is electrically connected to the energy supply device or the first coil, and the second electrical main connection device of the second coupling half of the first rapid coupling device is electrically connected to the first coil or the energy supply device. When the first coil moves to the standby position, the first rapid coupling device moves to the open position, and when the first coil moves to the working position, the first rapid coupling device moves to the closed position, thereby automatically generating an electrical connection between the energy supply device and the first coil.

[0067] An induction heating device configured in this way has the advantage that when the first coil moves to the working position, an electrical connection between the first coil and the energy supply device is easily established. Furthermore, when the first coil moves to the standby position, the electrical connection between the first coil and the energy supply device is easily disconnected. This reduces the maintenance time of the induction heating device.

[0068] Another advantage of the induction heating device configured in this way is that it has a reduced number of permanently present electrical connections between the first coil and the energy supply device, and in particular, no permanently present electrical connections at all. In particular, it eliminates the need for long cables to electrically connect the energy supply device and the first coil. This reduces electrical losses due to current transfer between the energy supply device and the first coil, thereby improving the efficiency of the induction heating device.

[0069] Another advantage of this type of induction heating device is that the coil can be moved without the need to move the energy supply device along with it. This reduces the total mass that needs to be moved in the entire system, thereby allowing the coil to be moved with greater dynamics and, at the same time, with a reduced amount of auxiliary energy.

[0070] An energy supply device in the sense of the present invention is a device set up to provide electrical energy for the operation of at least one coil, in particular electrical energy in the form of a current of appropriate current strength, appropriate voltage, and / or appropriate frequency. An energy supply device may be configured to provide electrical energy for multiple coils, in particular for at least two coils, preferably for three, four, five, six, or more coils. An energy supply device may have, or be configured as, at least one current converter, in particular an inverter. An energy supply device may have one or more transformers and / or one or more converters.

[0071] When the first main electrical connection device of the first coupling half of the first rapid coupling device is connected to the energy supply device, the second main electrical connection device of the second coupling half of the first rapid coupling device is connected to the first coil. Alternatively, when the first main electrical connection device of the first coupling half of the first rapid coupling device is connected to the first coil, the second main electrical connection device of the second coupling half of the first rapid coupling device is connected to the energy supply device.

[0072] The configuration requirement that the electrical connection between the energy supply device and the first coil by the first rapid coupling device, particularly by the first and second electrical main connection devices of the first rapid coupling device, is automatically generated by the movement of the first coil to the working position, may be configured as a forced link between the movement of the first coil to the working position and the movement of the first rapid coupling device to the closed position. In other words, the movement of the first coil to the working position triggers the movement of the first rapid coupling device to the closed position.

[0073] The first coil can be moved to the working position, which simultaneously moves the first rapid coupling device to the closed position.

[0074] The induction heating apparatus configured in this way has the advantage that the electrical connection between the first coil and the energy supply device when the first coil moves to the working position can be made more quickly and at less cost. This further reduces the maintenance time of the induction heating apparatus (for example, when maintaining the coil).

[0075] Alternatively, the first rapid coupling device can be time-offset, particularly delayed, by moving the first coil to the working position, thereby moving it to the closed position.

[0076] When the first coil is in the standby position, the first rapid coupling device is in the open position. When the first coil is in the working position, the first rapid coupling device is in the closed position.

[0077] The first main electrical connection device of the first coupling half of the first rapid coupling device, or the second main electrical connection device of the second coupling half, is electrically connected to the energy supply device, preferably by a busbar, or alternatively by a current cable, particularly by a high-frequency current cable. The first main electrical connection device of the first coupling half of the first rapid coupling device, or the second main electrical connection device of the second coupling half, is electrically connected to the first coil, preferably by a busbar, or alternatively by a current cable, particularly by a high-frequency current cable.

[0078] The induction heating device is preferably configured such that the first coil can move to a working position along the direction of movement of the first coil.

[0079] It is preferable that the first coil is transitionable from a standby position and / or a maintenance position to an operating position along the direction of first coil movement. It is even more preferable that the first coil is transitionable from a maintenance position to a standby position along the direction of first coil movement.

[0080] It is preferable that the first coil is movable to a standby position and / or a maintenance position along the direction of movement of the second coil. It is preferable that the first coil is movable from the working position to a standby position and / or a maintenance position along the direction of movement of the second coil. It is even more preferable that the first coil is movable from the standby position to a maintenance position along the direction of movement of the second coil.

[0081] The first coil may be able to move between a standby position, a maintenance position, and a working position by translational motion along the direction of movement of the first coil and / or the direction of movement of the second coil.

[0082] Alternatively or as an addition, the first coil may be able to move to a working position by rotational motion along at least one first coil rotation direction, preferably from a standby position and / or maintenance position to a working position. Further alternative or as an addition, the first coil may be able to move to a standby position and / or maintenance position by rotational motion along at least one second coil rotation direction, preferably from a working position to a standby position and / or maintenance position.

[0083] The first coil movement direction may be collinear with or parallel offset to the first movement direction of the first rapid coupling device. The second coil movement direction may be collinear with or parallel offset to the second movement direction of the first rapid coupling device. In particular, the electrical connection between the first coil and the energy supply device can be established and / or separated solely by the movement of the first coil between the working position and the standby position.

[0084] The induction heating apparatus configured in this way has the advantage that the electrical connection between the energy supply device and the first coil can be established with a small number of movements, particularly a small number of movements in different directions. This allows the electrical connection between the first coil and the energy supply device to be established and / or separated more quickly.

[0085] When the first coil is in the working position, an interaction can be induced between the metal workpiece and the magnetic alternating field generated by the first coil.

[0086] The first coil movement direction can extend laterally, and in particular perpendicular to, the first movement direction of the first rapid coupling device. The second coil movement direction can extend laterally, and in particular perpendicular to, the second movement direction of the first rapid coupling device.

[0087] The induction heating device is preferably configured such that it has a second coil positioned opposite a first coil, thereby enabling the metal workpiece to be positioned between the first and second coils, and in particular, guided between the first and second coils.

[0088] Preferably, the second coil is switchable between a maintenance position, a standby position, and an operating position.

[0089] It is preferable that the first coil and the second coil constitute a single integrated component.

[0090] The first main electrical connection device of the first coupling half of the first rapid coupling device, or the second main electrical connection device of the second coupling half, is preferably electrically connected to the second coil. In other words, the first coil and the second coil may be connected to the second main electrical connection device of the same rapid coupling device.

[0091] Preferably, the first rapid coupling device moves to the closed position as the first coil and / or the second coil move to their respective working positions, thereby creating an electrical connection between the energy supply device and the first coil, and between the energy supply device and the second coil.

[0092] The induction heating device configured in this way has the advantage of being able to be established simply and especially quickly by connecting the energy supply device and the second coil. As a result, the maintenance time of the induction heating device configured in this way can be reduced.

[0093] Alternatively, the induction heating device has a second rapid coupling device, where the second main electrical connection device of the second coupling half of the second rapid coupling device is electrically connected to the second coil or energy supply device. Preferably, the first main electrical connection device of the first coupling half of the second rapid coupling device is electrically connected to the energy supply device or the second coil. Preferably, the second rapid coupling device moves to the open position when the second coil moves to the standby position and / or maintenance position. Preferably, the second rapid coupling device moves to the closed position when the second coil moves to the working position, thereby automatically generating an electrical connection between the energy supply device and the second coil.

[0094] An induction heating apparatus configured in this way has the advantage that the first coil and the second coil can be moved independently to their respective working position and / or standby position and / or maintenance position. This further reduces the maintenance time of the induction heating apparatus and, in particular, helps to avoid downtime of the production line having such an induction heating apparatus. For example, while the first coil is in the standby position, the second coil can be kept in the working position to heat a metal workpiece.

[0095] The configuration requirement that the electrical connection between the energy supply device and the second coil by the second rapid coupling device, particularly by the first and second electrical main connection devices of the second rapid coupling device, is automatically generated by the movement of the second coil to the working position, may be configured as a forced link between the movement of the second coil to the working position and the movement of the second rapid coupling device to the closed position. In other words, the movement of the second coil to the working position triggers the movement of the second rapid coupling device to the closed position.

[0096] The movement of the second coil to the working position allows the second rapid coupling device to be simultaneously moved to the closed position.

[0097] An induction heating device configured in this way has the advantage that the electrical connection between the second coil and the energy supply device is quickly established when the second coil moves to the working position. This further reduces the maintenance time of the induction heating device.

[0098] Alternatively, the second rapid coupling device can be time-offset, particularly delayed, by moving the second coil to the working position, thereby moving it to the closed position.

[0099] The induction heating device is preferably configured to have a third coil and a fourth coil facing the third coil, thereby enabling the positioning of a metal workpiece between the third coil and the fourth coil, and in particular, enabling guidance between the third coil and the fourth coil.

[0100] Preferably, the third and fourth coils are transitionable between a maintenance position, a standby position, and an operating position.

[0101] The third and fourth coils preferably form a single integrated component.

[0102] The first main electrical connection device of the first coupling half of the first rapid coupling device, or the second main electrical connection device of the second coupling half, is preferably electrically connected to the third coil and / or the fourth coil, or to an energy supply device. In other words, the first coil and the third coil and / or the fourth coil may be connected to the second main electrical connection device of the same rapid coupling device.

[0103] Preferably, the first rapid coupling device moves to the closed position as the first coil and / or the third coil and / or the fourth coil move to their respective working positions, thereby creating an electrical connection between the energy supply device and the first coil, and between the energy supply device and the third coil and / or the fourth coil.

[0104] The induction heating apparatus configured in this way has the advantage of being able to be established simply and especially quickly by connecting the energy supply device with the third coil and / or the fourth coil. This further reduces the maintenance time of the induction heating apparatus configured in this way.

[0105] Alternatively, the induction heating device has a third rapid coupling device and / or a fourth rapid coupling device, wherein the second main electrical connection device of the second coupling half of the third rapid coupling device is electrically connected to the third coil or energy supply device, and the second main electrical connection device of the second coupling half of the fourth rapid coupling device is electrically connected to the fourth coil or energy supply device. Preferably, the first main electrical connection device of the first coupling half of the third rapid coupling device is electrically connected to the energy supply device or the third coil. Preferably, the first main electrical connection device of the first coupling half of the fourth rapid coupling device is electrically connected to the energy supply device or the fourth coil. Preferably, the third rapid coupling device moves to the open position when the third coil moves to the standby position and / or maintenance position. Preferably, the fourth rapid coupling device moves to the open position when the fourth coil moves to the standby position and / or maintenance position. Preferably, when the third coil moves to the working position, the third rapid coupling device moves to the closed position, thereby automatically creating an electrical connection between the energy supply device and the third coil. Preferably, when the fourth coil moves to the working position, the fourth rapid coupling device moves to the closed position, thereby automatically creating an electrical connection between the energy supply device and the fourth coil.

[0106] The induction heating apparatus configured in this way has the advantage of further reducing the maintenance time of the induction heating apparatus and particularly avoiding downtime of the production line having the induction heating apparatus configured in this way. The metal workpiece can be heated by keeping the fourth coil in the working position while the third coil is, for example, in the standby position.

[0107] The requirement that the electrical connection between the energy supply device and the third coil by the third rapid coupling device is automatically established by the movement of the third coil to the working position may be configured as a forced link between the movement of the third coil to the working position and the movement of the third rapid coupling device to the closed position. In other words, the movement of the third coil to the working position triggers the movement of the third rapid coupling device to the closed position.

[0108] The requirement that the electrical connection between the energy supply device and the fourth coil by the fourth rapid coupling device is automatically established by the movement of the fourth coil to the working position may be configured as a forced link between the movement of the fourth coil to the working position and the movement of the fourth rapid coupling device to the closed position. In other words, the movement of the fourth coil to the working position triggers the movement of the fourth rapid coupling device to the closed position.

[0109] When the third coil moves to the working position, the third rapid coupling device can simultaneously move to the closed position. When the fourth coil moves to the working position, the fourth rapid coupling device can simultaneously move to the closed position.

[0110] An induction heating device configured in this way has the advantage that when the third coil and / or fourth coil move to their respective working positions, the electrical connection between the third coil and / or fourth coil and the energy supply device is quickly established. This further reduces the maintenance time of the induction heating device.

[0111] Alternatively, the third and / or fourth coils can be moved to their respective working positions, thereby time-offsetting, and in particular delaying, their movement to the closed position.

[0112] Other embodiments relating to the first rapid coupling device described above also apply to the second, third, and fourth rapid coupling devices. These embodiments particularly relate to the first and second electrical main connection devices, the first and second electrical sub-connection devices, the first and second fluid connection devices, the first and second guide devices, and the first and second fixing devices. In particular, the first, second, third, and fourth rapid coupling devices may be configured as substantially the same embodiments as the rapid coupling devices described above.

[0113] The induction heating device is preferably configured such that it has at least one capacitor device.

[0114] The capacitor device may be electrically connected to the first coil. The capacitor device may have only one capacitor. Alternatively, the capacitor device may have multiple capacitors wired in parallel and / or series with respect to one another.

[0115] The capacitor device may be electrically connected to the second coil and / or the third coil and / or the fourth coil.

[0116] The induction heating device is preferably configured such that the first main electrical connection device of the first coupling half of the first rapid coupling device, or the second main electrical connection device of the second coupling half, is electrically connected to the capacitor device.

[0117] The first electrical main connection device of the first coupling half of the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device may be electrically connected to the capacitor device.

[0118] The second electrical main connection device of the second coupling half of the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device may be electrically connected to the capacitor device.

[0119] The induction heating device is preferably configured such that the capacitor device and the first coil constitute a single integrated component.

[0120] In particular, when the first coil moves between the maintenance position and / or the standby position and / or the working position, there is virtually no relative motion between the capacitor device and the first coil. In other words, when the first coil moves between the maintenance position and / or the standby position and / or the working position, the capacitor device moves together with it.

[0121] The capacitor device and / or the second coil and / or the third coil and / or the fourth coil can constitute a single integrated component.

[0122] An induction heating device may have an inductor wagon, and the first coil and / or second coil and / or third coil and / or fourth coil and / or capacitor device may be arranged on the inductor wagon and together constitute a single integrated component.

[0123] The induction heating device configured in this way has the advantage that the first coil and / or the second coil and / or the third coil and / or the fourth coil can be easily moved translationally between the working position, the standby position and the maintenance position. This further reduces the maintenance time of the induction heating device.

[0124] The induction heating device is preferably configured such that the first coil can be moved between a standby position and an operating position by an electric and / or hydraulic and / or pneumatic actuator.

[0125] The second coil and / or the third coil and / or the fourth coil are preferably movable between a standby position and an operating position by an electric and / or hydraulic and / or pneumatic actuator.

[0126] The actuator may be configured as a crane and / or a multi-axis robot.

[0127] The induction heating device is preferably configured to have a cooling device, and the first coil is fluidly connected to the cooling device by a cooling fluid pipe.

[0128] The cooling fluid piping may be fluid-connected to a first fluid connection device of a first fitting half and to a second fluid connection piping of a second fitting half. Alternatively, the cooling fluid piping may be directly fluid-connected to a first coil and / or a second coil and / or a third coil and / or a fourth coil.

[0129] The condenser device is preferably fluid-connected to the cooling device by cooling fluid piping.

[0130] The induction heating device is preferably configured such that the first coil can be moved to a maintenance position, and when the first coil moves from the working position to the maintenance position, the first rapid coupling device automatically moves to the open position.

[0131] The first coil can transition directly from the working position to the maintenance position. Alternatively or additionally, the first coil can transition from the working position to the standby position, and from the standby position to the maintenance position.

[0132] When the first coil moves from the standby position to the maintenance position, the rapid coupling device remains in the open position.

[0133] The second coil and / or the third coil and / or the fourth coil are preferably directly transitionable to the maintenance position, and as the second coil and / or the third coil and / or the fourth coil transition from their respective working positions to their respective maintenance positions, the first rapid coupling device and / or the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device transition to their respective open positions.

[0134] The first coil and / or the second coil and / or the third coil and / or the fourth coil and / or the capacitor device may be supported in a manner that allows for positional adjustment in a direction perpendicular to the movement direction of the first and second coils, preferably perpendicular to the transport plane of the metal workpiece.

[0135] The first coil and / or the second coil and / or the third coil and / or the fourth coil and / or the capacitor device may be supported in a position adjustable manner in a direction other than the direction of movement of the first and second coils, preferably in the direction of transport of the metal workpiece.

[0136] The first coil may be positioned offset from the second coil in the transport direction. The third coil may be positioned offset from the fourth coil in the transport direction.

[0137] The induction heating device may have a first capacitor device and / or a second capacitor device and / or a third capacitor device and / or a fourth capacitor device. The first capacitor device may be electrically connected to a first coil. The second capacitor device may be electrically connected to a second coil. The third capacitor device may be electrically connected to a third coil. The fourth capacitor device may be electrically connected to a fourth coil.

[0138] The first coil and the first capacitor device can form a single integrated component. The second coil and the second capacitor device can form a single integrated component. The third coil and the third capacitor device can form a single integrated component. The fourth coil and the fourth capacitor device can form a single integrated component.

[0139] The first rapid coupling device and / or the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device may be supported in a manner that allows for positional adjustment in a direction perpendicular to the movement directions of the first and second coils. The first rapid coupling device and / or the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device may be supported in a manner that allows for positional adjustment in the transport direction. In particular, the first rapid coupling device and / or the second rapid coupling device and / or the third rapid coupling device and / or the fourth rapid coupling device thereby follow the positional adjustment of the first coil and / or the second coil and / or the third coil and / or the fourth coil.

[0140] Furthermore, the fundamental problem underlying the present invention is to provide a production line for manufacturing and / or processing metal workpieces that has reduced downtime.

[0141] The fundamental problem underlying this invention is solved by a production line having the features of claim 14 of the present invention.

[0142] More precisely, the problem underlying the present invention is solved by a production line for manufacturing and / or processing metal workpieces, the production line comprising at least one induction heating device as described above and at least one processing device for processing metal workpieces.

[0143] The production line preferably has the multiple induction heating devices and / or processing devices for processing metal workpieces as described above.

[0144] Processing devices for processing metal workpieces may be, or may include, rolling devices, pressing devices, cutting devices, or other processing devices.

[0145] Furthermore, the fundamental problem underlying the present invention is to provide a method for maintaining an induction heating device that has a shortened maintenance time.

[0146] The problem underlying this invention is solved by a method having the features of claim 15. More precisely, the problem underlying this invention is solved by a method for maintaining an induction heating device using the rapid coupling device described above, the method comprising the following method steps: - The first coil moves to the maintenance position, and, - A barrier is provided between the maintenance area and the work area of ​​the first coil in order to protect the maintenance area.

[0147] The maintenance area is the area where the first coil is in the maintenance position. The working area is the area where the first coil is in the working position.

[0148] The barrier may be configured as a mechanical barrier, preferably as a fence or wall. The barrier may also be configured as an optical barrier.

[0149] Further advantages, details, and features of the present invention will become apparent from the embodiments described below. [Brief explanation of the drawing]

[0150] [Figure 1] This is a schematic diagram showing a rapid coupling device based on the first embodiment in the open position. [Figure 2] This is a schematic diagram showing a rapid coupling device based on the first embodiment in the closed position. [Figure 3] This is a schematic diagram showing an induction heating device according to a second embodiment, in which the first coil is in the working position. [Figure 4] This is a schematic diagram showing an induction heating device according to a second embodiment, in which the first coil is in a standby position. [Figure 5] This is a schematic diagram showing an induction heating device according to a second embodiment, in which the first coil is in the maintenance position. [Figure 6] This is a schematic diagram showing an induction heating device according to a third embodiment, in which the first coil and the second coil are in the working position. [Figure 7] This is a schematic diagram showing an induction heating device according to a third embodiment, in which the first coil and the second coil are in a standby position. [Figure 8] This is a schematic diagram showing an induction heating device according to the fourth embodiment, in which the first coil and the second coil are in the working position. [Modes for carrying out the invention]

[0151] In the following description, the same reference numerals represent the same component or feature; therefore, a description of a component made with reference to one figure is also valid for other figures, and repeated descriptions are omitted. Furthermore, individual features described in relation to one embodiment can be used separately in other embodiments.

[0152] Figure 1 shows a rapid coupling device 10 in the open position for an induction heating device 40 not shown in Figure 1, based on a first embodiment. Embodiments of the induction heating device 40 are shown in Figures 3 to 8. The rapid coupling device 10 has a first coupling half 20 having a first coupling surface 21. The first coupling half 20 has a first fixing device 23 and a first electrical main connection device 22, the first fixing device 23 and the first electrical main connection device 22 are located on the first coupling surface 21. The rapid coupling device 10 further has a second coupling half 30 having a second coupling surface 31. The second coupling half 30 has a second fixing device 33 corresponding to the first fixing device 23 and a second electrical main connection device 32 corresponding to the first electrical main connection device 22. The second fixing device 33 and the second electrical main connection device 32 are positioned on the second coupling surface 31 of the second joint half 30.

[0153] The rapid coupling device 10 can move between the open position shown in Figure 1 and the closed position shown in Figure 2 by relative movement between the first coupling half 20 and the second coupling half 30. In particular, the rapid coupling device 10 can move from the open position to the closed position by relative movement in the first direction of movement R1 between the first coupling half 20 and the second coupling half 30, and can move from the closed position to the open position by relative movement in the second direction of movement R2 between the first coupling half 20 and the second coupling half 30.

[0154] When the rapid coupling device 10 is in the open position, the first fixing device 23 is mechanically separated from the second fixing device 33, and the first electrical main connection device 22 is electrically separated from the second electrical main connection device 32.

[0155] When the rapid coupling device 10 moves to the closed position shown in Figure 2, the first electrical main connection device 22 is electrically connected to the second electrical main connection device 32.

[0156] The first fixing device 23 has a first recess 231 and a second recess 232 formed on the first coupling surface 21 of the first joint half 20. The second fixing device 33 has a first projection 331 extending perpendicularly from the second coupling surface 31 of the second joint half 30 to the first coupling surface 21 of the first joint half 20, and a second projection 332 extending perpendicularly from the second coupling surface 31 of the second joint half 30 to the first coupling surface 21. The first projection 331 and the second projection 332 are each configured as cylindrical projections.

[0157] The first fixing device 23 includes a first fixing member 233 and a second fixing member 234. When the rapid coupling device 10 moves to the closed position shown in Figure 2, the first projection 331 is housed in the first recess 231 and the second projection 332 is housed in the second recess 232. The first fixing member 233 and the second fixing member 234 are movable between the open position and the locked position in the fixing member movement direction which extends laterally with respect to the first movement direction R1.

[0158] The first joint half 20 has a first guide device 24, and the second joint half 30 has a second guide device 34 corresponding to the first guide device 24. When the rapid coupling device 10 moves to the closed position, the first joint half 20 and the second joint half 30 are guided to be centered at least with respect to the lateral direction with respect to the first direction of movement R1.

[0159] The first guide device 24 is configured as the entrance area of ​​the recess 231 of the first fixing device 23 and has a wider free cross-section than the rest of the recess 231. The second guide device 34 is configured as the tapered end area of ​​the first projection 331.

[0160] The first projection 331 and the second projection 332 each have grooves 333 and 334, respectively.

[0161] The first joint half 20 further includes a first fluid connection device 25 positioned on the first coupling surface 21 of the first joint half 20. The second joint half 30 further includes a second fluid connection device 35 positioned on the second coupling surface 31 of the second joint half 30, which corresponds to the first fluid connection device 25.

[0162] The first joint half 20 has a first protective device 26 for protecting the first joint half 20 from contamination. The first protective device 26 is movable between an open position and a closed position. In the closed position of the first protective device 26 shown in Figure 1, the first protective device 26 covers the first coupling surface 21 of the first joint half 20. When the rapid coupling device 10 moves to the closed position shown in Figure 2, the first protective device 26 automatically moves mechanically to the open position. The second joint half 30 has an operating device 36 corresponding to the first protective device 26. When the rapid coupling device 10 moves to the closed position shown in Figure 2, the operating device 36 operates the first protective device 26 of the first coupling half 20 by mechanical contact of the operating device 36 with the first protective device 26, thereby moving the first protective device 26 to the open position. The operating device 36 has two operating protrusions that extend from the second coupling half 30 toward the first coupling half 20.

[0163] Figure 2 shows the rapid coupling device 10 according to the first embodiment in the closed position. The first protective device 26 is in the open position.

[0164] The first electrical main connection device 22 is in electrical contact with the second electrical main connection device 32.

[0165] The first joint surface 21 of the first joint half 20 is positioned to face the second joint surface 31 of the second joint half 30.

[0166] The first projection 331 is housed in the first recess 231, and the second projection 332 is housed in the second recess 232. The first fixing member 233 and the second fixing member 234 are in their respective locking positions. The first fixing member 233 engages rearward with the first projection 331 in its groove 333. The second fixing member 234 engages rearward with the second projection 332 in its groove 334. In this way, the first fixing device 23 is coupled to the second fixing device 33 by friction and shape bonding.

[0167] Figure 3 shows an induction heating device 40 according to a second embodiment. The induction heating device 40 has a first coil 41 for generating a magnetic field for heating a metal workpiece 50. The induction heating device 40 is linked to an energy supply device 42. The energy supply device 42 may be a component of the induction heating device 40. The first coil 41 is in the working position. The first coil 41 is movable between the working position shown in Figure 3, the standby position shown in Figure 4, and the maintenance position shown in Figure 5.

[0168] The induction heating device 40 has a capacitor device 43, which is electrically connected to a first coil 41. The capacitor device 43 and the first coil 41 constitute a single integrated component.

[0169] The induction heating device 40 further comprises a rapid coupling device 10 based on the first embodiment, wherein the first electrical main connection device 22 of the first coupling half 20 of the rapid coupling device 10 is electrically connected to the energy supply device 42, and the second electrical main connection device 32 of the second coupling half 30 of the rapid coupling device 10 is electrically connected to the capacitor device 43.

[0170] When the first coil 41 moves to the standby position shown in Figure 4 and / or the maintenance position shown in Figure 5, the rapid coupling device 10 moves to the open position. When the first coil 41 moves to the working position, the rapid coupling device 10 moves to the closed position, thereby automatically creating an electrical connection between the energy supply device 42 and the first coil 41.

[0171] The first coil 41 can be moved from the working position to the standby position and / or to the maintenance position in the second coil movement direction S2. The second coil movement direction S2 corresponds to the second movement direction R2 of the rapid coupling device 10.

[0172] The capacitor device 43 and the first coil 41 constitute a single integrated component, and as a result, when the first coil 41 moves to the standby position, there is virtually no relative motion between the capacitor device 43 and the first coil 41. In other words, when the first coil 41 moves between the standby position and the working position, the capacitor device 43 moves with it.

[0173] Figure 4 shows an induction heating device 40 according to the second embodiment, where the first coil 41 is in the standby position. When the first coil 41 is in the standby position, the rapid coupling device 10 is in the open position.

[0174] The first coil 41 can be moved from a standby position to an operating position in the first coil movement direction S1. The first coil 41 can be moved from a standby position to a maintenance position in the second coil movement direction S2.

[0175] Figure 5 shows an induction heating device 40 according to the second embodiment, in which the first coil 41 is in the maintenance position. When the first coil 41 is in the maintenance position, the rapid coupling device 10 is in the open position.

[0176] The first coil 41 can be moved from the maintenance position to the standby position and / or the working position in the first coil movement direction S1.

[0177] When the first coil 41 is in the maintenance position, a barrier 60 for protecting the first coil 41 is provided between the first coil 41 and the metal workpiece 50. The barrier 60 is automatically removed when the first coil 41 moves to the standby position and / or the working position.

[0178] Figure 6 shows an induction heating device 40 according to a third embodiment. The induction heating device 40 has a first coil 41 and a second coil 46 to generate a magnetic field for heating a metal workpiece 50.

[0179] The first coil 41 and the second coil 46 are both in the working position. The first coil 41 and the second coil 46 can be moved between the working position shown in Figure 6, the standby position shown in Figure 7, and a maintenance position (not shown).

[0180] The induction heating device 40 has a first capacitor device 44, which is electrically connected to a first coil 41. The first capacitor device 44 and the first coil 41 constitute a single integrated component. The induction heating device 40 also has a second capacitor device 45, which is electrically connected to a second coil 46. The second capacitor device 45 and the second coil 46 constitute a single integrated component.

[0181] Furthermore, the induction heating device 40 has two rapid coupling devices 10 based on the first embodiment, where the first electrical main connection device 22 of the first coupling half 20 of one rapid coupling device 10 is electrically connected to the energy supply device 42, and the second electrical main connection device 32 of the second coupling half 30 of the rapid coupling device 10 is electrically connected to the first capacitor device 44.

[0182] The first electrical main connection device 22 of the first coupling half 20 of the other rapid coupling device 10 is electrically connected to an energy supply device 42, and the second electrical main connection device 32 of the second coupling half 30 of the rapid coupling device 10 is electrically connected to a second capacitor device 45.

[0183] When the first coil 41 and / or the second coil 46 move to the standby position shown in Figure 7 and / or to a maintenance position (not shown), the rapid coupling device 10 moves to the open position. When the first coil 41 and / or the second coil 46 move to the working position, the rapid coupling device 10 moves to the closed position, thereby automatically creating an electrical connection between the energy supply device 42 and the first coil 41 and / or the second coil 46.

[0184] The first coil 41 and the second coil 46 can be moved from the working position to the standby position and / or maintenance position in the second coil movement direction S2.

[0185] The first coil 41 and the second coil 46 can be moved between their respective working position and / or standby position and / or maintenance position, either in a time-synchronized manner or offset from each other in time.

[0186] Figure 7 shows an induction heating device 40 according to the third embodiment, where the first coil 41 and the second coil 46 are in the standby position. When the first coil 41 and the second coil 46 are in the standby position, the rapid coupling device 10 is in the open position.

[0187] Figure 8 shows an induction heating device 40 according to the fourth embodiment in the working position. The induction heating device 40 has a first coil 41 and a first capacitor device 44 electrically connected to the first coil 41. The induction heating device 40 has a second coil 46 and a capacitor device 45 electrically connected to the second coil 46.

[0188] The first capacitor device 44 is connected to the second capacitor device 45 by a flexible electrical energy transmission device 47 configured as a cable 48.

[0189] The induction heating device 40 further comprises a rapid coupling device 10 based on the first embodiment, wherein the first electrical main connection device 22 of the first coupling half 20 of the rapid coupling device 10 is electrically connected to an energy supply device 42, and the second electrical main connection device 32 of the second coupling half 30 of the rapid coupling device 10 is electrically connected to a first capacitor device 44.

[0190] When the first coil 41 moves to a standby position (not shown) and / or a maintenance position (not shown), the rapid coupling device 10 moves to the open position. When the first coil 41 moves to the working position, the rapid coupling device 10 moves to the closed position, thereby automatically creating an electrical connection between the energy supply device 42, the first coil 41, and the second coil 46. [Explanation of Symbols]

[0191] 10. Rapid coupling device 20 First joint half 21 First joint surface (of the first joint half) 22 First electrical main connection device 23 First fixed device 231 First recess 232 Second recess 233 First fixing member 234 Second fixing member 24. First guidance device 25. First fluid connection device 26. First protective device 30 Second joint half 31 (Second joint half) Second joint surface 32 Second electrical main connection device 33. Second fixed device 331 First projection 332 Second projection 333 Groove (of the first projection) 334 Groove (of the second projection) 34. Second guidance device 35. Second fluid connection device 36 Operating Devices 40 Induction heating device 41. The first coil 42 Energy supply devices 43 Capacitor Devices 44. First Capacitor Device 45. Second Capacitor Device 46. ​​The second coil 47 Energy Transfer Devices 48 Cables 50 Metalwork 60 Barriers R1 First direction of movement R2 Second direction of movement S1 First coil movement direction S2 Second coil movement direction

Claims

1. A rapid coupling device (10) for an induction heating device (40) for heating a metal workpiece, - The rapid coupling device (10) has a first coupling half (20), and the first coupling half (20) has a first fixing device (23) and a first electrical main connection device (22), - The rapid coupling device (10) has a second coupling half (30) corresponding to the first coupling half (20), and the second coupling half (30) has a second fixing device (33) corresponding to the first fixing device (23) and a second electrical main connecting device (32) corresponding to the first electrical main connecting device (22), - The rapid coupling device (10) is capable of moving between an open position and a closed position by relative motion between the first coupling half (20) and the second coupling half (30). - In a rapid coupling device in which, when the rapid coupling device (10) is in the closed position, the first fixing device (23) is frictionally coupled to the second fixing device (33), and the first electrical main connection device (22) is electrically connected to the second electrical main connection device (32), The rapid coupling device (10) is characterized in that, when the rapid coupling device (10) is in the closed position, it is capable of transmitting a current having a current intensity of 1,000 amperes or more, preferably alternating current, between the first electrical main connection device (22) and the second electrical main connection device (32).

2. The rapid coupling device (10) according to claim 1, characterized in that when the rapid coupling device (10) is in the closed position, the first fixing device (23) is coupled to the second fixing device (33) by a friction coupling and / or by a negative pressure coupling, preferably by a hydrodynamic negative pressure coupling.

3. The rapid coupling device (10) according to claim 1 or 2, characterized in that when the rapid coupling device (10) is in the closed position, the first fixing device (23) is additionally coupled to the second fixing device (33) in a shape-joint manner.

4. - The first fixing device (23) has a first recess (231) formed on the first coupling surface (21) of the first joint half (20); - The second fixing device (33) has a first projection (331) extending from the second coupling surface (31) of the second joint half (30) toward the first coupling surface (21) of the first joint half (20), and - The rapid coupling device (10) according to any one of claims 1 to 3, characterized in that when the rapid coupling device (10) moves to the closed position, the first projection (331) is housed in the first recess (231) and rearward engaged, thereby, when the rapid coupling device (10) is in the closed position, the first fixing device (23) is coupled to the second fixing device in a shape-joint manner.

5. - The first joint half (20) has a first guide device (24), and the second joint half (30) has a second guide device (34) corresponding to the first guide device (24), and - The rapid coupling device (10) according to any one of claims 1 to 4, characterized in that the first coupling half (20) and the second coupling half (30) are guided by the first guide device (24) and the second guide device (34) so ​​as the rapid coupling device (10) moves to the closed position, preferably centered in a direction lateral to the first direction of movement (R1).

6. - The first joint half (20) has a first fluid connection device (25), and the second joint half (30) has a second fluid connection device (35) corresponding to the first fluid connection device (25), - The rapid coupling device (10) according to any one of claims 1 to 5, characterized in that when the rapid coupling device (10) is in the closed position, the first fluid connection device (25) is fluidly connected to the second fluid connection device (35).

7. - The first joint half (20) has a first electrical subconnection device, and the second joint half (30) has a second electrical subconnection device corresponding to the first electrical subconnection device. - The rapid coupling device (10) according to any one of claims 1 to 6, characterized in that when the rapid coupling device (10) is in the closed position, the first electrical sub-connection device is electrically connected to the second electrical sub-connection device.

8. An induction heating device (40) for heating a metal workpiece, comprising at least one first coil (41) that is movable between a standby position and a working position for generating a magnetic field for heating a metal workpiece (50), wherein the induction heating device (40) comprises a first rapid coupling device (10) as described in any one of claims 1 to 7; - At least one of the first coils (41) is electrically connectable to the energy supply device (42) by the first rapid coupling device (10), - The first electrical main connection device (22) of the first coupling half (20) of the first rapid coupling device (10) is electrically connected to the energy supply device (42) or the first coil (41), and, - The second electrical main connection device (32) of the second coupling half (30) of the first rapid coupling device (10) is electrically connected to the first coil (41) or the energy supply device (42); -When the first coil (41) moves to the standby position, the first rapid coupling device (10) moves to the open position; and, - When the first coil (41) moves to the working position, the first rapid coupling device (10) moves to the closed position, thereby automatically generating an electrical connection between the energy supply device (42) and the first coil (41). An induction heating device (40) characterized by the following.

9. The induction heating device (40) according to claim 8, characterized in that the first coil (41) can be moved to a working position by moving along the first coil movement direction (S1).

10. The induction heating device (40) according to claim 8 or 9, wherein the induction heating device (40) has a second coil arranged opposite to the first coil (41), thereby enabling the metal workpiece (50) to be positioned between the first coil (41) and the second coil.

11. The induction heating device (40) according to any one of claims 8 to 10, characterized in that the first coil (41) is movable between a standby position and a working position by an electric and / or hydraulic and / or pneumatic actuator.

12. The induction heating device (40) according to any one of claims 8 to 11, characterized in that the induction heating device (40) has a cooling device, and the first coil (41) is fluidly connected to the cooling device by a cooling fluid pipe.

13. The induction heating device (40) according to any one of claims 8 to 12, characterized in that the first coil (41) is movable to a maintenance position, and when the first coil (41) moves from the working position to the maintenance position, the first rapid coupling device (10) automatically moves to the open position.

14. A production line for manufacturing and / or processing metal workpieces, comprising at least one induction heating device (40) according to any one of claims 8 to 13, and at least one processing device for processing metal workpieces.

15. A method for maintaining an induction heating device (40) according to any one of claims 8 to 13 using a rapid coupling device (10) according to any one of claims 1 to 7, wherein the method consists of the following steps: - The first coil (41) moves to the maintenance position, and - A barrier (60) is provided between the maintenance area and the work area of ​​the first coil (41) in order to protect the maintenance area. A method having

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