EP2204460B1 - Dispositif et procédé destinés au chauffage de pièces à usiner - Google Patents

Dispositif et procédé destinés au chauffage de pièces à usiner Download PDF

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Publication number
EP2204460B1
EP2204460B1 EP20090015769 EP09015769A EP2204460B1 EP 2204460 B1 EP2204460 B1 EP 2204460B1 EP 20090015769 EP20090015769 EP 20090015769 EP 09015769 A EP09015769 A EP 09015769A EP 2204460 B1 EP2204460 B1 EP 2204460B1
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EP
European Patent Office
Prior art keywords
furnace
workpieces
levels
height
removal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20090015769
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German (de)
English (en)
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EP2204460A2 (fr
EP2204460A3 (fr
Inventor
Rolf-Josef Schwartz
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Schwartz GmbH
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Individual
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Publication date
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Publication of EP2204460A2 publication Critical patent/EP2204460A2/fr
Publication of EP2204460A3 publication Critical patent/EP2204460A3/fr
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Publication of EP2204460B1 publication Critical patent/EP2204460B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/005—Furnaces in which the charge is moving up or down
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/142—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving along a vertical axis
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching

Definitions

  • the invention relates to a method for treating workpieces, in which the workpieces are heated in a furnace in a plurality of horizontal furnace levels, wherein the furnace levels are arranged vertically one above the other and each furnace level is in each case at a certain height.
  • each furnace level is designed to accommodate at least one workpiece, and the workpieces are removed after heating in a defined order from the oven levels.
  • the invention further relates to a device or a furnace for carrying out this method.
  • the important goals of the automotive industry today and in the future include the reduction of fuel consumption, the reduction of CO 2 emissions and the increase in occupant safety.
  • a common means of reducing fuel consumption and thus reducing CO 2 emissions is, for example, the reduction of vehicle weight.
  • the body panels used must have higher strength at a lower weight.
  • ovens usually have the disadvantage that they have a large amount of space due to their length expansion.
  • ovens with a plurality of oven levels arranged one above the other horizontally, which are also referred to as stack ovens.
  • the individual oven levels can be provided with drawer elements which are pulled horizontally out of the oven for loading and unloading of workpieces.
  • the loading and the removal of workpieces from the individual stacked oven levels is preferably carried out via a height-traversable loading and unloading device.
  • the US patent US Pat. No. 6,227,848 B1 discloses a method of treating workpieces having the workpieces in a furnace in a plurality of horizontal Oven levels are heated.
  • the oven levels are vertically stacked, with each oven level at a height.
  • Each furnace level is designed to receive a workpiece.
  • the workpieces are removed after heating in a defined order from the oven levels.
  • the oven levels are moved stepwise vertically, so that the respective heights of the individual oven levels change.
  • the oven levels are moved vertically in a stepwise manner so that the height of the respective oven level, from which a workpiece is removed, corresponds to a fixed removal height and the respective oven level is at the removal level for a certain period of time.
  • the removal is difficult depending on the geometry of the workpieces, whereby different periods of time can be required when gripping.
  • German patent DE 10 2006 020781 B3 discloses a furnace for heating steel blanks having a plurality of horizontally stacked furnace planes, each furnace plane being provided for receiving at least one steel blank, and means being provided in each furnace plane for moving the steel blanks during heating.
  • German patent application DE 199 48 606 A1 discloses a method for tempering components, e.g. As semiconductor circuits, printed circuit boards and the like, in which the components are conveyed on carriers through an entrance slot in a tempering provided with Temperierorganen and discharged through an entrance slot opposite the exit slot.
  • the carriers are received in the housing by a magazine which is provided with adjacently arranged holders and, after loading the first holder, is successively shifted in a direction from a starting position to successive receiving positions in which the individual holders of the magazine are successively fed.
  • An object of the invention is therefore to provide a method by means of which workpieces, in particular body steels, can be heated to They then press-harden, without there being any major fluctuations in the quality of the finished body components.
  • the method should both keep the time of the transfer of the heated workpieces from the oven to the subsequent shape for each workpiece as constant as possible, as well as minimize the space required for the oven for heating the workpieces.
  • An object of the invention is also to provide an apparatus for carrying out such a method.
  • the invention comprises a method for treating workpieces, in which the workpieces to be treated are heated in a furnace in a plurality of horizontal furnace planes (E 1 ... E n ), which are arranged vertically one above the other.
  • Each furnace level (E 1 ... E n ) is in each case at a certain height (h 1 ... h n ) and can accommodate at least one workpiece to be heated.
  • the workpieces are removed from the oven levels (E 1 ... E n ) in a defined sequence.
  • the oven levels (E 1 ... E n ) are moved stepwise vertically, thereby changing the respective heights (h 1 ... h n ) of the individual oven levels (E 1 ...
  • the stepwise vertical movement takes place in such a way that the height (h 1 ... H n ) of the respective furnace plane (E 1 ... E n ), from which at least one heated workpiece is removed, corresponds to a defined removal height h x and the respective furnace level (E 1 ... E n ) is at the extraction height h x for a time t> 0.
  • the position of the oven levels (E 1 ... E n ) is fixed in relation to the furnace, and the furnace is heated for the removal Workpieces from the oven levels (E 1 ... E n ) are moved stepwise vertically by adjusting means.
  • One embodiment of the method uses a lifting system as adjusting means, while another embodiment uses a pulling system.
  • the heated workpieces are removed in a development of the method by means of a transfer device on the removal height h x from the respective furnace levels (E 1 ... E n ).
  • the removal takes place in such a way that the transfer device picks up the workpieces at the defined removal height h x and at least partially removes them horizontally.
  • the workpieces are removed horizontally at the defined removal height h x .
  • a new workpiece to be treated is introduced into the same oven level (E 1 ... E n ).
  • the workpieces are introduced into drawer elements which are arranged on the individual oven levels. In this case, a drawer element on the removal height h x horizontally moved out, removed a workpiece and then moved back the drawer element.
  • the invention further comprises a device for treating workpieces, comprising a furnace with a plurality of horizontal furnace levels (E 1 ... E n ), which are arranged vertically one above the other and in which workpieces are heated.
  • Each furnace level (E 1 ... E n ) is located at a height (h 1 ... h n ) and is designed to receive and remove at least one workpiece.
  • the device has adjusting means for stepwise vertical movement of the oven levels (E 1 ... E n ), which are designed such that they correspond to the respective heights (h 1 ... H n ) of the individual oven levels (E 1 n ) can change.
  • the adjusting means can move the oven levels (E 1 ...
  • the position of the oven levels (E 1 ... E n ) is fixed with respect to the oven, and the adjusting means are designed so that they can move the oven stepwise vertically.
  • One embodiment comprises a lifting system as adjusting means, while another embodiment comprises a pulling system.
  • the device according to the invention preferably comprises a transfer device for removing heated workpieces from the oven levels (E 1 ... E n ) at the removal height h x .
  • This transfer device is also designed to charge the oven levels with workpieces to be heated.
  • the transfer device has means to take the heated workpieces at the defined removal height h x and remove them at least partially horizontally.
  • the transfer device may have means for transporting workpieces horizontally at the defined removal height h x .
  • the transfer device can introduce a new workpiece to be heated into the same oven level (E 1 ... E n ).
  • the oven levels (E 1 ... E n ) comprise drawer elements which are provided for receiving workpieces and can be moved horizontally on the removal height h x .
  • the oven comprises several oven levels (E 1 ... E n ), the targeted be changed in height (h 1 ... h n ) and so can be adapted to a fixed extraction height h x .
  • the respective height (h 1 ... H n ) of the oven levels (E 1 ... E n ) is thereby changed such that it corresponds in each case to the removal height h x , so that workpieces from the oven levels are always removed at the removal height h x and preferably also be charged.
  • the required stepwise vertical movement of the oven levels (E 1 ... E n ) is made possible by the use of adjusting means.
  • the invention thus turns away from continuous furnaces in which the workpieces are moved successively through an oven for heating. It also turns away from height-adjustable removal devices, which are used in floor ovens for removing the heated workpieces use.
  • An advantage of the invention over conventional methods for preventing variations in quality in the manufacture of body components is always the same time for the transfer of workpieces from the oven for further shaping.
  • a continuous furnace also offers this possibility, however, it has a corresponding length extension and an associated high space requirement.
  • the invention solves this problem advantageously by a height adjustment of the oven levels to a fixed extraction height h x .
  • Each furnace level is moved to this removal height h x for removal of the heated workpiece and held there for a time t> 0 so that the transfer path from the furnace to further shaping is the same for each removed workpiece.
  • Fig. 1 schematically shows the example of a height-adjustable furnace 101 for heating workpieces, which typically includes a housing with an opening for the assembly and removal of the workpieces to be heated.
  • the oven also comprises any number n of horizontal oven levels (E 1 ... E n ), on each of which at least one workpiece can be heated.
  • the oven levels (E 1 ... E n ) are separated from each other and lie vertically one above the other. This in Fig. 1 Example shown shows seven oven levels.
  • Each of the oven levels contains at least one receptacle for storage of the workpieces during heating.
  • the design of the images is variable and depends, inter alia, for example, on the shape of the workpieces to be heated.
  • the workpieces are in the receptacles during heating and are removed again after heating.
  • the recordings are, for example, drawers 102, which can be extended and retracted via a horizontal movement 103.
  • Fig. 1 For example, the example of an extended drawer 104 is shown in which a workpiece 105 is located. For heating, the drawer is equipped with a workpiece 105, retracted for heating the workpiece 105 and then extended again.
  • the size of the base surface of the furnace 101 can be minimized with such an oven principle. This leads to a reduction in the space required for the furnace 101. Furthermore, with this furnace principle, the size the surface of the furnace 101 are minimized, which in turn leads to a reduction of energy consumption by reduced surface losses.
  • the furnace 101 further comprises a lifting system with which the oven levels (E 1 .. E n ) can be moved by an up and down movement.
  • the height-adjustable oven 101 is shown as having the lifting system mounted on the bottom outside of the oven 101 so that the movement of the oven levels (E 1 ... E n ) is realized by movement of the entire oven 101.
  • the lifting system is not exposed to the prevailing in the furnace high temperatures T of up to 1000 ° C and thus need not have required for these temperatures temperature resistance.
  • Another advantage is that the housing of the furnace 101 only needs to enclose the oven levels (E 1 ... E n ) with all the necessary accessories for heating workpieces 105. As a result, it is not necessary to heat additional volume within the furnace 101, which among other things leads to an optimization of the energy requirement of the furnace 101.
  • the lifting system is, for example, adjusting means 106, which can influence the height of the furnace 101 via a vertical movement 107.
  • Fig. 2 is shown as an example of an adjustment 106, a ball screw.
  • Ball screws are helical gears for converting a rotational movement 201 into a translational movement 202.
  • One component of the ball screw is a ball screw 203, which is driven by a motor 204 and carries out the rotational movement 201.
  • the ball screw 203 consists of a ball screw rod 205 in the form of a cylindrical round rod on which a ball screw 206 is applied.
  • On the ball screw 203 is a non-rotatably mounted spindle nut 207, which performs the translatory movement 202.
  • Balls 208 pass through a recirculating ball 209 for ball return within the spindle nut 207.
  • the spindle nut 207 is driven by a motor 204 and thus moved with respect to the ball screw shaft 203. In this way, the spindle nut 207 carries out the rotary movement 201, while the non-rotatably mounted ball screw 203 controls the translational movement 202.
  • a roller screw drive is used in which rollers are used instead of the balls 208, but they are also other adjustment 106 can be used.
  • any other suitable devices can be used as traction means.
  • Another embodiment of the invention used for height adjustment of the furnace 101 for example, pulleys or chain hoists with lifting chains.
  • pulleys or chain hoists with lifting chains can result in corresponding cost savings.
  • counterweights can be used, for example.
  • push chains for height adjustment of the furnace 101 are used.
  • Thrust chains are special chains, which stiffen in contrast to the known tension chains in the thrust direction, but over Sprockets remain deflectable.
  • the ability to push is made possible by specially shaped chain links, which interlock positively and support each other with little play. Due to the geometry of the link plates buckling under pressure load by the weight of the furnace 101 is prevented.
  • Push chains thus work like a conventional linear drive as a rigid telescopic drive rods. But they are extremely flexible when it comes to storage. The chains can be redirected to where there is room, and they can be wound up to save space.
  • Advantages of push chains are in particular the implementation of uniform smooth movements of the oven levels (E 1 ... E n ) in the height adjustment, holding an absolute position for removal of the workpieces 105 and a compact storage possibility of the push chains.
  • FIGS. 3a-3c The schematic sequence of a process for heating workpieces in a height-adjustable furnace show the FIGS. 3a-3c an example.
  • Fig. 3a the steps in the assembly of the furnace up to a process point 1 again.
  • the furnace 101 is heated to a defined temperature T, which is usually 800 ° C to 1000 ° C during press hardening.
  • a lifting system changes the height of the furnace 101 until the height h 1 of the furnace level E 1 corresponds to a defined height h x in which the furnace plane E 1 then remains for a time t> 0.
  • a height h designates the distance of an object point from a reference line or reference surface.
  • the distance between object point and reference line is preferably determined by the direct comparison of the distance to be determined with a scale.
  • a scale In this case, for example, serve as a reference line, the bottom surface on which the furnace is placed, so that the height h x corresponds to a certain distance from the ground.
  • the variable heights of the oven levels are adjusted to this height h x by a vertical movement of the oven.
  • the drawer 102 of the furnace level E 1 is extended, equipped with a workpiece to be heated 105 and then retracted again. It follows a renewed change in the amount of Furnace 101 by the lifting system, so that then the height h 2 of the furnace level E 2 corresponds to the height h x , in which then the furnace level E 2 for a period t> 0 remains.
  • the drawer 102 of the furnace level E 2 is extended, equipped with a workpiece to be heated 105 and then retracted again. This process is repeated stepwise until the drawers 102 of all oven levels (E 1 ... E n ) are equipped by the oven levels are each moved to the defined height h x .
  • the process of repetitively heating workpieces 105 in a height adjustable furnace 101 is terminated when the in Fig. 3b illustrated Process point 2 is reached and after a successful removal no further workpieces 105 are introduced for heating in the oven levels E n . Thereafter, the furnace 101 may be cooled, for example.
  • the steps in the last removal of heated workpieces from the individual oven levels are in Fig. 3c shown.
  • all furnace levels (E 1 ... E n ) with workpieces 105, remove the workpieces after heating from the furnace levels (E 1 to E n ) and only when all workpieces the oven levels (E 1 to E n ) were removed, the oven levels (E 1 to E n ) to re-stocking.
  • not all oven levels (E 1 to E n ) are used to heat workpieces 105. This is particularly advantageous if only a few parts to be heated.
  • the workpieces 105 to be heated are, in particular, sheet metal parts made of body steel for press-hardened body components in automobile construction. However, other or non-formed workpieces of other materials may also be heated.
  • One embodiment provides for producing workpieces 105 with partially different properties, in particular for the aforementioned body components in the automotive industry are beneficial.
  • a drawer 102 is partially moved out some time before the actual removal of the workpiece 105, so that the workpiece 105 partially cooled to a temperature below the austenite or hardening temperature and a subsequent press hardening in the already cooled part no very hard martensite, but a perlite Forms ferrite structure.
  • This structure has significantly higher strain rates and is less susceptible to breakage in the event of a vehicle crash.
  • the height-adjustable oven 101 is part of a system for press-hardening of workpieces.
  • the removal takes place for example by a transfer device 401, which is equipped with at least one gripper 402 for receiving and storing workpieces.
  • Fig. 4 shows by way of example a transfer device 402 with four grippers. After removal of the heated workpiece 105, the transfer device 402 performs a movement 403 from the furnace 101 to a pressing tool 404 and transfers the workpiece to the pressing tool 404.
  • the pressing process can be carried out by methods and pressing tools that are well known to those skilled in the art.
  • the pressing tool 404 the workpiece 105 is deposited by the transfer device 402, and the transfer device 402 then returns from the pressing tool 404 to the furnace 101.
  • the transfer device 401 is designed both for removing a workpiece 105 from a furnace level and for further transport to a pressing tool 404 and for loading a furnace level. To this end, the transfer device 401 picks up a workpiece to be heated on the way from the pressing tool 404 to the furnace 101, transports it to the furnace 101 and deposits it in one of the oven levels.
  • the height of the pressing tool 404 based on the floor of its location, for example, also represented by the height h x , which is firmly defined and unchangeable. Both for the removal of a heated workpiece 105 from a furnace level E I and for equipping a furnace level E I with a workpiece 105 to be heated, the height h i of the furnace level E I is adapted to the height h x of the pressing tool 404.
  • the height h x of the pressing tool 404 is thus the determining height for the removal and loading of the oven levels (E 1 ... E n ).
  • Fig. 5 shows by way of example the arrangement of two ovens 101 and 101 'and a pressing tool 404.
  • the furnace 101 and a comparable furnace 101' face each other in this example so that the associated drawers 102 each move in the axis of the pressing tool 404 during extension.
  • a workpiece 105 after heating is removed from the extended drawer 104 of the oven 101 'and transferred to the die 404.
  • the extended drawer 104 of the oven 101 ' is then refitted and retracted.
  • the drawer 102 of the furnace 101 can be extended to remove the heated workpiece 105 and re-equipped after the removal and transfer of the heated workpiece to the pressing tool 404 and retracted again.
  • the process of the mutual extension of the drawers 102 of the ovens 101 and 101 ' is repeatable as often as desired.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Claims (14)

  1. Procédé pour le traitement de pièces à usiner, selon lequel les pièces à usiner sont chauffées dans un four à plusieurs niveaux de four horizontaux (E1 ... En), les niveaux du four (E1 ... En) étant superposés verticalement et chaque niveau du four (E1 ... En) se trouvant respectivement à une hauteur (h1 ... hn), et chaque niveau du four (E1 ... En) étant conçu pour recevoir au moins une pièce à usiner et les pièces à usiner étant retirées des niveaux du four (E1 à En) dans un ordre défini après avoir été chauffées,
    caractérisé en ce que
    les niveaux du four (E1 ... En) sont, pour le retrait des pièces à usiner chauffées, déplacés verticalement de manière progressive, de sorte que les hauteurs respectives (h1 ... hn) des différents niveaux du four (E1 ... En) se modifient, les niveaux du four (E1 ... En) étant ainsi déplacés verticalement de manière progressive de telle sorte que la hauteur (h1 ... hn) du niveau de four respectif (E1 ... En) dont est retirée au moins une pièce à usiner correspond à une hauteur de retrait hx fermement définie et que le niveau de four respectif (E1 ... En) se trouve à la hauteur de retrait hx pour une durée t > 0, la position des niveaux du four (E1 ... En) étant fixée par rapport au four et le four étant déplacé verticalement de manière progressive par des moyens de réglage pour retirer des niveaux du four (E1 ... En) les pièces à usiner chauffées.
  2. Procédé selon la revendication 1 selon lequel est utilisé, en tant que moyen de réglage, un système de levage ou un système de traction.
  3. Procédé selon l'une des revendications 1 à 2, selon lequel les pièces à usiner sont retirées des niveaux du four (E1 ... En) au moyen d'un dispositif de transfert à la hauteur de retrait hx.
  4. Procédé selon la revendication 3, selon lequel le dispositif de transfert, lors du retrait, prend les pièces à usiner à la hauteur de retrait définie hx et les emporte au moins en partie horizontalement.
  5. Procédé selon la revendication 4, selon lequel le dispositif de transfert, lors du retrait, prend les pièces à usiner à la hauteur de retrait définie hx et les emporte horizontalement à la hauteur de retrait définie hx.
  6. Procédé selon l'une des revendications 1 à 5, selon lequel une nouvelle pièce à usiner à chauffer est, après le retrait d'une pièce à usiner chauffée de l'un des niveaux du four (E1 ... En), introduite à ce même niveau du four (E1 ... En).
  7. Procédé selon l'une des revendications 1 à 6, selon lequel les pièces à usiner sont, pour être chauffées, introduites dans des éléments tiroirs aux niveaux du four (E1 ... En) et on tire horizontalement un élément tiroir à la hauteur de retrait hx et une pièce à usiner est retirée de l'élément tiroir et l'élément tiroir est ensuite rentré.
  8. Dispositif pour le traitement de pièces à usiner, comprenant un four avec plusieurs niveaux de four horizontaux (E1 ... En) auxquels les pièces à usiner peuvent être chauffées, les niveaux du four (E1 ... En) étant superposés verticalement et chaque niveau du four (E1 ... En) se trouvant respectivement à une hauteur (h1 ... hn), et chaque niveau du four (E1 ... En) étant conçu pour recevoir et retirer au moins une pièce à usiner,
    caractérisé en ce que
    le dispositif comporte des moyens de réglage pour le déplacement vertical progressif des niveaux du four (E1 ... En), lesdits moyens de réglage étant conçus de manière à pouvoir modifier les hauteurs respectives (h1 ... hn) des différents niveaux du four (E1 ... En) et à pouvoir déplacer les niveaux du four (E1 ... En) verticalement de manière progressive de telle sorte que la hauteur (h1 ... hn) d'un niveau de four respectif (E1 ... En) correspond à une hauteur de retrait (hx) fermement définie et que le niveau de four respectif (E1 ... En) se trouve à la hauteur de retrait hx pour une durée t > 0, la position des niveaux du four (E1 ... En) étant fixée par rapport au four et les moyens de réglage étant conçus de manière à pouvoir déplacer le four verticalement de manière progressive.
  9. Dispositif selon la revendication 8, dans lequel les moyens de réglage sont réalisés en tant que système de levage ou système de traction.
  10. Dispositif selon l'une des revendications 8 à 9, comprenant un dispositif de transfert qui est conçu pour retirer les pièces à usiner des niveaux du four (E1 ... En) à la hauteur de retrait hx.
  11. Dispositif selon l'une des revendications 8 à 10, dans lequel le dispositif de transfert est conçu pour pouvoir prendre les pièces à usiner à la hauteur de retrait définie hx et les emporter au moins en partie horizontalement.
  12. Dispositif selon la revendication 11, dans lequel le dispositif de transfert est conçu pour prendre les pièces à usiner à la hauteur de retrait définie hx et les emporter horizontalement à la hauteur de retrait définie hx.
  13. Dispositif selon l'une des revendications 8 à 12, dans lequel le dispositif de transfert est conçu de manière à pouvoir, après le retrait d'une pièce à usiner chauffée de l'un des niveaux du four (E1 ... En), introduire à ce même niveau du four (E1 ... En) une nouvelle pièce à usiner à chauffer.
  14. Dispositif selon l'une des revendications 8 à 13, dans lequel des éléments tiroirs destinés à recevoir des pièces à usiner sont prévus aux niveaux du four (E1 ... En), un élément tiroir à la hauteur de retrait hx pouvant être déplacé horizontalement.
EP20090015769 2009-01-05 2009-12-21 Dispositif et procédé destinés au chauffage de pièces à usiner Not-in-force EP2204460B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910004089 DE102009004089B3 (de) 2009-01-05 2009-01-05 Verfahren und Vorrichtung zum Behandeln von Werkstücken

Publications (3)

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EP2204460A2 EP2204460A2 (fr) 2010-07-07
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DE102010027439C5 (de) * 2010-07-17 2016-03-24 Audi Ag Turmofen zum Erhitzen von härtbaren Blechplatinen
DE102012103275A1 (de) * 2012-04-16 2013-10-17 Benteler Automobiltechnik Gmbh Schichtofenanlage sowie Verfahren zum Betreiben der Schichtofenanlage
DE102012218159B4 (de) * 2012-10-04 2018-02-08 Ebner Industrieofenbau Gmbh Handhabungseinrichtung
DE102016121354B3 (de) * 2016-11-08 2018-05-09 Tower Automotive Holding Gmbh Anlage zum Herstellen eines warmgehärteten blechförmigen Werkstücks
US10852063B2 (en) 2017-06-02 2020-12-01 Img-Na, Llc Modular furnace

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JPS6056405B2 (ja) * 1982-02-15 1985-12-10 ロザイ工業株式会社 板材焼入れ装置
US6227848B1 (en) * 1994-06-07 2001-05-08 Imai Seisakusho Co., Ltd. Vertical continuous oven
DE19948606A1 (de) * 1999-10-08 2001-04-12 Seho Systemtechnik Gmbh Verfahren und Vorrichtung zum Temperieren von Bauteilen, z.B. Halbleiterschaltkreisen und dergl.
DE102006020781B3 (de) * 2006-05-03 2007-11-22 Benteler Automobiltechnik Gmbh Ofen

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EP2204460A2 (fr) 2010-07-07
DE102009004089B3 (de) 2010-12-09
EP2204460A3 (fr) 2012-03-14
HUE025061T2 (en) 2016-01-28

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