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EP3395965B1 - Ligne moulée à chaud destiné à la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse ainsi que son procédé de fonctionnement - Google Patents

Ligne moulée à chaud destiné à la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse ainsi que son procédé de fonctionnement Download PDF

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Publication number
EP3395965B1
EP3395965B1 EP18168502.5A EP18168502A EP3395965B1 EP 3395965 B1 EP3395965 B1 EP 3395965B1 EP 18168502 A EP18168502 A EP 18168502A EP 3395965 B1 EP3395965 B1 EP 3395965B1
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EP
European Patent Office
Prior art keywords
hot
press
forming
rails
forming line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18168502.5A
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German (de)
English (en)
Other versions
EP3395965A1 (fr
Inventor
Georg Frost
Martin Hesselmann
Markus Kettler
Christoph Nitschke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
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Publication of EP3395965A1 publication Critical patent/EP3395965A1/fr
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    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • 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
    • C21D1/34—Methods of heating
    • 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
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the present invention relates to a hot-forming line for the production of hot-formed and press-hardened sheet steel products according to the features in the preamble of patent claim 1.
  • the present invention further relates to a method for operating a thermoforming line according to the features in the preamble of claim 10.
  • a heating station also referred to as a temperature control station
  • a Hot forming and press hardening tool is therefore required, as well as a Hot forming and press hardening tool.
  • Manipulators mostly in the form of industrial robots, are used between the individual stations or tools in order to transfer the circuit board or components from one station to the next.
  • thermoforming line is from, for example DE 10 2009 014 670 B4 known.
  • the object of the present invention is to provide a thermoforming line and a method for operating it, in which the transport time between the different stations and the design effort for transport are optimized.
  • thermoforming line according to the features in claim 1.
  • the hot-forming line for the production of hot-formed and press-hardened sheet steel products has at least one temperature control station for heating at least one sheet metal plate and at least one hot-forming and press-hardening tool for forming and hardening the heated sheet metal plate to form a sheet steel product.
  • a linear conveyor system is provided along the thermoforming line, which is formed from two parallel opposed rails, the rails themselves being translationally displaceable and gripping elements, hereinafter also referred to as grippers, arranged on the rails, the gripping elements in Axial direction of the rails are displaceable and the gripping elements can be raised or lowered orthogonally to or with the rails.
  • grippers translationally displaceable and gripping elements
  • the gripping elements can be displaced in the axial direction of the rails either by moving the rails in the axial direction or by a relative movement of the gripping elements to the rails.
  • the linear conveyor system is thus provided at least over a partial length of the thermoforming line, so that blanks can be transported from the temperature control station to the thermoforming tool or press hardening tool.
  • the linear conveyor system is preferably provided along the entire thermoforming line.
  • the linear conveyor system is thus provided along the entire thermoforming line. Accordingly, a sheet metal blank is picked up from a stack of blank sheets or a board provided by a trimming device and transported through the hot-forming line and the finished sheet steel product is deposited at a storage location. Separate manipulators, in particular industrial robots, can thus be dispensed with between the individual stations. According to the invention, the individual stations of the thermoforming line can thereby be moved closer to one another locally or adjoin one another directly adjacent. The space required in a production hall to set up such a thermoforming line is thereby reduced.
  • the linear conveyor system can also be operated synchronously with several gripping elements, in particular in the cycle time of the thermoforming line. This makes it possible to optimize the cycle times of the entire thermoforming line, in particular to shorten them, and to reduce the transfer times.
  • the energy required to operate the linear conveyor system but also z. B. to warm up the board and / or keep the board warm can be reduced.
  • the cycle time is preferably less than or equal to 10s.
  • the cycle time for the temperature control can preferably be less than or equal to 6s, in particular less than or equal to 4s.
  • the cycle time for hot forming and press hardening is preferably less than or equal to 6s, in particular between 4s and 6s.
  • the linear conveyor system according to the invention is suitable for a thermoforming line falling several times, in particular a double or quadruple or even a five-fold thermoforming line.
  • the two sheet metal plates heated at least in sections in the temperature control station are again picked up in parallel and placed in a hot-forming and press-hardening tool.
  • the hot-forming and press-hardening tool has two shaping cavities, so that the two at least partially heated sheet metal plates are hot-formed in parallel and also press-hardened in parallel.
  • the two sheet steel products produced in this way are then picked up in parallel and placed on a stack of trays.
  • hardened sheet steel products for motor vehicle construction for example motor vehicle structural components or motor vehicle body components, are produced.
  • the linear conveyor system is particularly preferably characterized in that active grippers are provided for gripping a sheet metal plate.
  • the active grippers perform a clamping movement.
  • these are provided, for example, as scissor grabs.
  • the active grippers are designed as plate grippers and temperature control grippers, very particularly preferably at least as a pair of grippers on the two parallel rails, one gripper of the pair of grippers being arranged on one of the two parallel rails. In this way, a circuit board that sags in the raised state due to gravity can be transported safely with the active gripper's clamping movement.
  • Passive grippers are preferably provided for gripping a finished sheet steel product. Passive grippers grip the sheet steel product from below, particularly in relation to the vertical direction, and lift it. The sheet steel product remains on the passive gripper due to the action of gravity.
  • the passive grippers are designed as product grippers.
  • the sheet steel product has a higher moment of resistance against deflection, a passive gripper being structurally less complex than an active gripper and therefore less prone to errors.
  • the gripping elements, but especially the passive grippers, are arranged below the component for gripping.
  • the gripping elements described above are arranged on the rails. Depending on the design variant of the rails themselves, this means that they slide from the outside over the rails or are also arranged inside the rails. In particular, the gripping elements are coupled to the rails such that on the one hand they can move in the axial direction of the rails, but at the same time they are guided linearly.
  • the rails themselves can be manufactured, for example, as an extruded profile.
  • the gripping elements can be mounted, for example ball-bearing or roller-mounted, in or on the rails. However, they can also be coupled to the rails with a plain bearing. All gripping elements are preferably displaceable in the axial direction of the rails via a synchronous drive.
  • the movement of the gripping elements in the axial direction can thus be carried out synchronously and therefore in the same cycle.
  • the synchronous drive can be, for example, a rack and pinion drive or a belt drive.
  • the gripping elements can also be fixed in position with respect to the axial direction of the rails. This means that movement of the rails in their axial direction also leads to the gripping elements being moved in the axial direction. The rails are then also moved in the longitudinal direction via a synchronous drive.
  • the main movement of the gripping elements for transport takes place by moving the rails in their longitudinal direction.
  • at least two pairs of grippers that is to say two grippers spaced longitudinally on a rail, can be changed in their relative distance in the longitudinal direction of the rails from one another.
  • the grippers therefore carry out a relative movement in the longitudinal direction of the rails, so that, for example, a different distance between two blanks received by a temperature control station can be set for placement in a forming tool.
  • the main transport movement is carried out by the movement of the rails in the longitudinal direction.
  • the gripping elements are still preferably displaceable relative to the rails in relation to the vertical direction.
  • the gripping elements are also arranged in a fixed position on the rails in relation to the vertical direction. A lifting movement of blanks or sheet steel products thus takes place by lifting the entire rails in the vertical direction.
  • the rails are furthermore preferably displaceable orthogonally to their axial direction and in relation to the hot forming line. This can also be done via a synchronous drive, so that both rails are moved outwards at the same time, thus performing an opposite movement.
  • the inserted sheet metal plates and the heated sheet metal plates inserted in the hot forming and press hardening tool can then be processed in the respective station, preferably in one cycle.
  • the temperature control station and the hot-forming and press-hardening tool are opened and the rails are moved inwards and perform a movement towards each other.
  • Sheet metal blanks or sheet steel products can then be picked up with the gripping elements.
  • the gripping elements then carry out the movement in the axial direction of the rails.
  • a translatory travel path of the rails in the horizontal plane orthogonal to the longitudinal direction is preferably only between 5 mm and 250 mm, preferably 10 mm to 50 mm from a rest position to a gripping position. Due to the particularly short time due to the short travel of the rails themselves, the time required for conveying is significantly reduced compared to an industrial robot. The cycle times between the press cycles can thereby be reduced and the energy required to extend the movement can also be reduced.
  • the temperature control station and the press frame with hot forming and press hardening tools are particularly preferably arranged close to one another.
  • the distance between the press frame and temperature control station is less than 2 m, preferably less than 1 m, in particular less than 50 cm.
  • these are particularly preferably formed immediately adjacent to one another. This means that the distance is a few centimeters or directly next to one another. The distance is therefore less than 10 cm, in particular less than 5 cm, so that the hot-forming and press-hardening tool is decoupled from the temperature control station.
  • the decoupling particularly affects vibrations as well as temperature lines and kinematic movements.
  • the total displacement path from receiving the circuit board to depositing the manufactured component can be realized with an overall length of less than 15 m, in particular less than 10 m.
  • This information relates to the double falling version of the temperature control station and the thermoforming tool.
  • the temperature control station and the hot-forming and press-hardening tool are preferably arranged on separate machine foundations.
  • the advantage is that smaller standard presses can be used for the temperature control station as well as for the hot forming and press hardening tool.
  • a press with a pressing force of 1500 to 2500 t, in particular 1800 to 2200 t and preferably 2000 t can be used for the hot forming and press hardening tool.
  • a press with a pressing force of 20 to 100 t, in particular 30 to 70 t, preferably 50 t can be used for the temperature control station.
  • the temperature control station it is possible for the temperature control station to be coupled directly to the hot-forming and press-hardening tool.
  • the temperature control station is flanged to the press frame. It is also possible that the temperature control station is controlled in parallel to the drive of the hot forming and press hardening tool and both stations work synchronously or in the same cycle.
  • the temperature control station can in particular have the same control, preferably also the same drive, as the hot forming and press hardening tool in the press frame.
  • the temperature control station is opened later or later than the hot forming and press hardening tool. This results in a better effect of heat or in a lower cooling rate after the temperature control station is opened, especially when the temperature of the contact is increased.
  • the temperature control station is thus only opened when the hot-forming tool is open, or shortly before the heated blanks are transported into the hot-forming tool.
  • the present invention further relates to a method for operating the previously described thermoforming line.
  • a circuit board is gripped and conveyed into the temperature control station by axial movement of at least two opposite circuit board grippers and placed in this.
  • a board heated in the temperature control station is gripped by at least two opposite temperature control grippers in the temperature control station and conveyed into the hot-forming and press-hardening tool and deposited there.
  • a hot-formed and hardened sheet steel product from the hot-forming and press-hardening tool is gripped by at least two opposing product grippers and conveyed to a storage stack, or the manufactured steel sheet products are conveyed to the storage stack by a downstream transfer system.
  • FIG. 1 shows a thermoforming line 1 according to the invention, comprising a temperature control station 2 and a hot-forming and press-hardening tool 3 and a linear conveyor system 4 arranged thereon.
  • the linear conveyor system 4 has two rails 5 arranged parallel to one another, with 5 gripping elements being arranged on the rails.
  • Two board grippers 6 are arranged from left to right in relation to the image plane.
  • Two temperature grippers 7 are arranged in the middle in relation to the image plane and two product grippers 8 are arranged in relation to the image plane on the right side.
  • the thermoforming line 1 is therefore double falling. It can also be designed to fall three, four or more times.
  • a total displacement path 6 is also shown.
  • the gripping elements are fixed in position in relation to the rails 5 in the axial direction 9 of the rails 5, the rails 5 being movable in their axial direction 9.
  • the rails 5 have carried out a relative movement 10 in relation to their axial direction 9 orthogonally inwards.
  • the respective gripping elements are thus brought into engagement with the sheet metal plates 11, the sheet metal plates 12 to be heated or the sheet steel products 13.
  • the linear conveyor system 4 then carries out a transport movement 14 in the axial direction 9 of the rails 5.
  • the end position is in Figure 2 shown.
  • the formed sheet steel products 13 are placed on a depicted stack 15.
  • the heated sheet metal plates 12 are placed on the hot-forming and press-hardening tool 3.
  • the newly picked sheet metal plates 11 are placed on the temperature control station 2 and new sheet metal plates 11 are again ready.
  • the rails 5 move outwards 16 so that the entire rails 5 with the respective gripping elements are moved outwards in relation to the axial direction 9 of the rails 5 and are no longer in engagement with the sheet metal plates 11, 12 and sheet steel products 13 stand.
  • a return movement 17 is then carried out in the axial direction 9 of the rails 5, in particular this return movement 17 is carried out synchronously with both rails 5, as in FIG Figure 3 shown. Then the process begins again as in Figure 1 shown.
  • the returned rails 5 are moved towards each other so that the gripping elements come into engagement with the heated sheet metal plates 12 and the sheet steel products 13.
  • Figure 4a and b show the thermoforming line 1 according to the invention in each case in a side view.
  • the rails 5 can be seen.
  • Sheet metal plates 11 picked up from a stack of sheet metal plates 18 are fed to the temperature control station 2.
  • the temperature control station 2 is optionally flanged to the press frame 19.
  • Figure 4b have the hot-forming and press-hardening tool 3 and the temperature control station 2 perform a closing movement synchronously and heat the sheet metal plates 11 inserted in the temperature control station 2 and form the heated sheet metal plates 12 into the steel sheet products 13, which are stored on a stack 15.
  • the temperature control station 2 has an actuator 20 so that the temperature control station 2 can be controlled independently of the hot forming and press hardening tool 3.
  • the actuator 20 can be arranged at the top and / or bottom of the temperature control station 2.
  • FIG. 5 shows an alternative embodiment variant of the hot-forming line 1 comprising a hot-forming and press-hardening tools and a temperature control station 21 connected downstream, the temperature-regulating stations 21 and the hot-forming and press-hardening tool 24 are connected to a common control unit 22.
  • a control unit 22 controls all individual stations isochronously or even simultaneously. Vibration dampers 23 can preferably be used in the coupling in all of the structural units shown in the figures.
  • the temperature control station 21 serves for local softening or other local structural adjustment of the press-hardened sheet steel product.
  • Figure 6 shows an embodiment variant according to Figure 5 with the difference that the temperature control station 2 and the temperature control station 21 are coupled to an upper tool 25 of the hot-forming and press-hardening tool 24 or its press frame 19, so that the opening and closing movement of the upper tool 25 are carried out synchronously and simultaneously with the temperature control station 2.
  • Figure 7a and b show a lifting process of the rails 5 with the plate grippers 6.
  • the rails 5 have a movement 10 orthogonal to their axial direction 9 towards each other, so that the plate grippers 6 are located in relation to the vertical direction V below the sheet metal plate 11.
  • a lifting movement is shown in Figure 7b run through the rails 5. This means that the entire rails 5 are moved upwards in the vertical direction V. As it were, the sheet metal plate 11 then lies on the plate grippers 6 and is also raised.
  • Figure 8a and b show an alternative design variant.
  • it is not the rails 5 that are raised in relation to the vertical direction V, but only the plate grippers 6. These are thus mounted on the rails 5 in a relatively movable manner in relation to the vertical direction V and can also be raised or lowered.
  • Figure 9a to c show an analog relative movement 10 Figure 8a and b with the difference that the board grippers 6 are shown here as active grippers. These are in an open position according to Figure 9a shown, so that the rails 5 have a movement 10 directed towards each other. According to Figure 9b the board grippers 6 are then closed as active grippers and according to Figure 9c raised to the vertical direction V again.
  • Figure 10 shows the thermoforming line 1 according to the invention in an idle state.
  • the upper rail 5 related to the image plane is displaced outwards in two parts in its axial direction 9. This enables free access 26 to the hot forming and press hardening tool 3 located behind it, so that a schematically indicated tool change 27 can take place.
  • the two rail parts are then moved towards one another again, coupled to one another and the hot-forming line 1 is operated.
  • two gripper pairs arranged in the middle in relation to the image plane which are in particular temperature control grippers 7, can be changed in their distance A1 from one another.
  • the width B2 is larger than the width B1.
  • Figure 11 shows a thermoforming line 1.
  • the temperature control station 2 and the hot forming and press hardening tool 3 are arranged close to each other with a distance 28 of less than 50 cm.
  • the temperature control station 2 and the hot forming and press hardening tool 3 can be driven synchronously. This can be done via a common control or by means of a higher-level control of two connected individual controls.
  • a common opening phase is important so that the linear conveyor system 4 can carry out a respective transport in a short time.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Claims (13)

  1. Ligne de moulage à chaud (1) pour la production de produits en tôle d'acier (13) thermoformés et trempés sous presse, présentant un poste de maintien en température (2) pour chauffer au moins une platine de tôle (11) et un outil de thermoformage et de trempe sous presse (3) et en ce que le long de la ligne de moulage à chaud (1) un système de transport linéaire (4) est prévu, caractérisée en ce que le système de transport linéaire (4) est constitué d'au moins deux rails (5) opposés en parallèle, dans laquelle les rails (5) peuvent être déplacés dans au moins une direction en translation et au niveau des rails (5) sont agencés des éléments de préhension, dans laquelle les éléments de préhension peuvent être déplacés en direction axiale (9) des rails (5) et en ce que les éléments de préhension peuvent être soulevés et abaissés sur le plan orthogonal par rapport à la direction axiale (9) des rails (5), dans laquelle l'outil de thermoformage et de trempe sous presse (3) et le poste de maintien en température (2) sont agencés à un intervalle de moins de 2 m, de préférence de moins d'1 m, en particulier de moins de 50 cm et en ce que la ligne de moulage à chaud (1) est constituée au moins de façon double de sorte que tout d'abord deux platines de tôles (11) peuvent être chauffées en même temps et au moins deux produits en tôle d'acier (13) peuvent être thermoformés et trempés sous presse en même temps.
  2. Ligne de moulage à chaud selon la revendication 1, caractérisée en ce que la course de déplacement totale de la prise d'une platine jusqu'au dépôt de la pièce fabriquée présente une longueur totale de moins de 15 m, en particulier de moins de 10 m.
  3. Ligne de moulage à chaud selon la revendication 2, caractérisée en ce que pour le poste de maintien en température (2), une longueur de 2 m est utilisée et/ou en ce que pour le châssis de presse (19) de l'outil de thermoformage et de trempe sous presse (3), une longueur de 2,2 m est utilisée et/ou en ce que l'on utilise respectivement 1 m pour une entrée et une sortie.
  4. Ligne de moulage à chaud selon l'une quelconque des revendications 1 à 3, caractérisée en ce que pour l'outil de thermoformage et de trempe sous presse (3), une presse ayant une puissance de presse de 1500 t à 2500 t, en particulier de 1800 t à 2200 t, de préférence 2000 t est utilisée.
  5. Ligne de moulage à chaud selon l'une quelconque des revendications précédentes, caractérisée en ce que, pour le poste de maintien en température (2), une presse ayant une puissance de presse de 20 t à 100 t, en particulier de 30 t à 70 t, de préférence de 50 t est utilisée.
  6. Ligne de moulage à chaud selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'un trajet de déplacement en translation des éléments de préhension est prévu entre 5 et 250 mm, en particulier 10 à 50 mm d'une position de repos à une position de préhension.
  7. Ligne de moulage à chaud selon l'une quelconque des revendications 1 à 6, caractérisée en ce que le poste de maintien en température est fixé par brides à l'outil de thermoformage et de trempe sous presse (3) ou en ce que le poste de maintien en température et l'outil de thermoformage et de trempe sous presse sont agencés directement côte à côte, avec un intervalle (28) inférieur à 50 cm, en particulier inférieur à 20 cm, de préférence inférieur ou égal à 10 cm.
  8. Ligne de moulage à chaud selon l'une quelconque des revendication 1 à 7, caractérisée en ce que le poste de maintien en température (21) est commandé en circulation synchrone par rapport à l'entraînement de l'outil de thermoformage et de trempe sous presse (24) ou en ce que le poste de maintien en température (21) est commandé pour son mouvement d'ouverture par rapport à l'outil de thermoformage et de trempe sous presse (24) de façon décalée dans le temps.
  9. Ligne de moulage à chaud selon la revendication 1, caractérisée en ce que le poste de maintien en température (2) et l'outil de thermoformage et de trempe sous presse (3) sont ouverts ou fermés de façon synchrone par le même entraînement.
  10. Procédé pour le fonctionnement d'une ligne de moulage à chaud (1) ayant les caractéristiques d'au moins la revendication 1, caractérisé en ce qu'une platine de tôle (11) est saisie et est transportée par un mouvement axial d'au moins deux préhenseurs de platine (6) opposés dans le poste de maintien en température (2) et déposée dans celui-ci, dans lequel parallèlement à cela, une platine de tôle chauffée (12) est saisie par au moins deux préhenseurs de maintien en température (7) opposés dans le poste de maintien en température (2) et est transportée dans l'outil de thermoformage et de trempe sous presse (3), dans lequel parallèlement à cela, deux produits en tôle d'acier (13) mis en forme et trempés sont saisis de l'outil de thermoformage et de trempe sous presse (3) par au moins deux préhenseurs de produit (8) opposés et sont transportés sur une pile de dépôt (15) ou en ce qu'un transfert en aval des produits en tôle d'acier (13) finis s'effectue sur une pile de dépôt (15).
  11. Procédé pour le fonctionnement d'une ligne de moulage à chaud selon la revendication 10, caractérisé en ce qu'un mouvement d'ouverture du poste de maintien en température (2) est réalisé de façon décalée dans le temps du mouvement d'ouverture de l'outil de thermoformage et de trempe sous presse (3).
  12. Procédé pour le fonctionnement d'une ligne de moulage à chaud selon la revendication 10 ou 11, caractérisé en ce que dans une ligne de moulage à chaud double (1), deux paires d'éléments de préhension réalisant le mouvement de transport de deux platines de tôle (11) et/ou produits de tôle d'acier (13) peuvent être modifiés l'un par rapport à l'autre au niveau de leur intervalle (A1) en direction axiale (9).
  13. Procédé pour le fonctionnement d'une ligne de moulage à chaud selon l'une quelconque des revendications 10 à 12, caractérisé en ce qu'un temps pour le transport d'une platine de tôle (11) ou du produit de tôle d'acier (13) est inférieur à 5 s, en particulier inférieur à 3 s.
EP18168502.5A 2015-12-23 2016-12-23 Ligne moulée à chaud destiné à la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse ainsi que son procédé de fonctionnement Active EP3395965B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015122796.7A DE102015122796A1 (de) 2015-12-23 2015-12-23 Warmformlinie zur Herstellung warmumgeformter und pressgehärteter Stahlblechprodukte sowie Verfahren zu dessen Betreibung
EP16206591.6A EP3184656B1 (fr) 2015-12-23 2016-12-23 Ligne moulée à chaud pour la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse et son procédé de fonctionnement

Related Parent Applications (2)

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EP16206591.6A Division EP3184656B1 (fr) 2015-12-23 2016-12-23 Ligne moulée à chaud pour la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse et son procédé de fonctionnement
EP16206591.6A Division-Into EP3184656B1 (fr) 2015-12-23 2016-12-23 Ligne moulée à chaud pour la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse et son procédé de fonctionnement

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EP3395965A1 EP3395965A1 (fr) 2018-10-31
EP3395965B1 true EP3395965B1 (fr) 2020-03-04

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EP18168502.5A Active EP3395965B1 (fr) 2015-12-23 2016-12-23 Ligne moulée à chaud destiné à la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse ainsi que son procédé de fonctionnement
EP16206591.6A Active EP3184656B1 (fr) 2015-12-23 2016-12-23 Ligne moulée à chaud pour la fabrication de produits de tôle d'acier moulés à chaud et durcis à la presse et son procédé de fonctionnement

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Country Status (6)

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US (1) US10954577B2 (fr)
EP (2) EP3395965B1 (fr)
CN (1) CN106916930B (fr)
DE (1) DE102015122796A1 (fr)
ES (2) ES2787030T3 (fr)
PL (1) PL3184656T3 (fr)

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DE102018207798A1 (de) 2018-05-17 2019-11-21 Ford Global Technologies, Llc Warmformlinie und Verfahren zur Herstellung warmumgeformter und pressgehärteter Stahlblechprodukte
SE542025C2 (en) 2018-06-21 2020-02-11 Gestamp Hardtech Ab Process and apparatus for cooling hot components
SE543318C2 (en) 2018-06-21 2020-11-24 Mats Olsson Method and system for cooling hot objects
CA3157083A1 (fr) * 2019-11-26 2021-06-03 Stephan Kaufhold Ensemble d'outillage d'estampage a chaud et procede de formation d'une piece presentant des proprietes de trempe adaptees
CN110961543B (zh) * 2019-12-20 2021-12-21 翟述基 高强钢板冲压热成型生产线综合运送料设备
CN113083933B (zh) * 2021-03-26 2022-12-23 武汉理工大学 大规格超细晶各向同性板材制备方法
DE102021110702A1 (de) 2021-04-27 2022-10-27 Voestalpine Metal Forming Gmbh Verfahren und Vorrichtung zum Herstellen gehärteter Stahlbauteile mit unterschiedlich duktilen Bereichen
DE102023124450A1 (de) 2023-09-11 2025-03-13 Schuler Pressen Gmbh Heizvorrichtung zum Erwärmen einer Platine aus Metall oder Kunststoff und Umformstation für eine Platine aus Metall oder Kunststoff

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Publication number Publication date
US20170183755A1 (en) 2017-06-29
CN106916930A (zh) 2017-07-04
EP3184656B1 (fr) 2018-10-24
CN106916930B (zh) 2019-03-26
PL3184656T3 (pl) 2019-02-28
ES2699916T3 (es) 2019-02-13
EP3184656A1 (fr) 2017-06-28
DE102015122796A1 (de) 2017-06-29
ES2787030T3 (es) 2020-10-14
US10954577B2 (en) 2021-03-23
EP3395965A1 (fr) 2018-10-31

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