EP2062987A1 - Heat form press - Google Patents
Heat form press Download PDFInfo
- Publication number
- EP2062987A1 EP2062987A1 EP08018035A EP08018035A EP2062987A1 EP 2062987 A1 EP2062987 A1 EP 2062987A1 EP 08018035 A EP08018035 A EP 08018035A EP 08018035 A EP08018035 A EP 08018035A EP 2062987 A1 EP2062987 A1 EP 2062987A1
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- EP
- European Patent Office
- Prior art keywords
- jaw
- cooling
- shaping
- forming
- thermoforming press
- 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.)
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Classifications
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- 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
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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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
- 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
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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
- 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
Definitions
- the invention relates to a thermoforming press according to the features in the preamble of claim 1.
- DE 24 52 486 C2 includes a method for producing a hardened sheet metal profile from a steel sheet in a prior art press hardening process.
- a board made of a hardenable steel is heated to hardening temperature, then hot formed in a press tool and then cured, while the sheet metal profile remains in the press tool.
- the steel sheet is pressed in less than 5 seconds in the final mold between two indirectly cooled tools under substantial change in shape and subjected to rapid cooling in the press so that a martensitic and / or bainitic fine-grained structure is achieved. Since the sheet metal profile is clamped in the press tool during cooling in the course of the curing process, a product with good dimensional stability is obtained.
- the indirect cooling takes place via cooling channels, which are introduced in the form of holes or slots (shaft cooling) at a defined distance from the forming surface in the tool.
- a cooling medium often water
- the cooling channels are usually drilled in the tool.
- the preparation of such holes is manufacturing technically complex and costly.
- the holes can often follow the three-dimensional structure of the tool surface only partially. As a result, the distance between the tool surface and the coolant channels is relatively large, whereby the cooling effect decreases.
- thermoforming press with an upper tool and a lower tool.
- Both the upper tool and the lower tool consists of a base plate with a fixed therein jaw and also defined on the base plate, acting as a jaw core. Between the support jaw and the back of the jaw facing the jaw, a channel system for the passage of a coolant is formed.
- a direct cooling in a thermoforming press is from the DE 26 03 618 A1 known.
- concentric annular grooves are introduced, lead into the channels passed through the tools. Through these channels, a cooling liquid is fed into the annular grooves for direct contact with a sheet metal profile to be hardened.
- a spray or dip cooling causes a strong contamination of the tools with coolant. This can cause corrosion and mechanical problems. The cooling performance leaves something to be desired.
- the invention is based on the prior art based on the object to provide a plant and application technology improved thermoforming press for forming and hardening of metal sheets, with improved cooling effect and reduced process time.
- thermoforming press according to the features of claim 1.
- the upper tool and / or the lower tool of the thermoforming press is constructed in two parts and includes a mold jaw and a support jaw.
- the mold jaw and the jaw are displaceable relative to each other, wherein the support jaw rests in a blocking position on the mold jaw and is spaced in a cooling position of the mold jaw, so that between the mold jaw and the support jaw, a cooling gap is formed through which a coolant is conductive.
- thermoforming press in which the distance between the coolant guide and the tool surface or the forming surface in the mold block can be minimized.
- the cooling can be ensured continuously during the forming process. Consequently, there is a minimum residence time of the pressed parts in the hot-forming press and thus a maximized economy.
- thermoforming press is then closed and the metal sheet formed between the upper tool and lower tool to the sheet metal profile.
- the clamping force of the thermoforming press is only needed to maintain the contact between the produced sheet metal profile and the upper tool and the lower tool for the purpose of heat transfer during cooling or hardening process.
- the cooling gap between the forming jaw and the jaw is opened again. Coolant flows through the cooling gap over the entire surface and at a short distance from the warm component. As a result, optimal cooling can be achieved. Until the resealing of the thermoforming press, the cooling gap is maintained.
- the support jaw in the blocking position is positively against the forming jaw.
- the contacting surfaces of the jaw and form jaw are matched in their contour and correspond to each other.
- the cooling gap extends on the rear side of the shaping jaw facing the support jaw over the surface of the shape geometry of the shaping jaw.
- linear drives For the displacement of the mold jaw and the jaw relative to each other linear drives are used.
- various embodiments of linear drives are possible.
- linear drives in the form of piston-cylinder units offer, in particular, this is intended to the use of hydraulic cylinders.
- At least one seal is integrated between them. This is located in the opposite guide surfaces of the mold jaw and / or the jaw.
- the seal is expediently provided in a groove in the support jaw above or below the coolant connection.
- the shaping jaw preferably consists of a thin steel shell with a shape geometry designed in accordance with the component to be produced.
- the support jaw is shaped.
- the mold jaw has a wall thickness of 4 mm to 15 mm, preferably from 5 mm to 10 mm. Due to the comparatively thin wall thickness of the mold jaw, a good heat exchange between the coolant and the hot-formed component is possible.
- thermoforming press 1 Based on Figures 1 - 4 a hot forming press 1 according to the invention is described.
- the illustrations each show schematically a vertical cross section through the thermoforming press 1 in different working positions.
- the thermoforming press 1 essentially comprises an upper tool 2 and a lower tool 3.
- the lower tool 3 is arranged on a press base 4.
- the upper tool 2 is fixed to a press carriage 5, which is vertically displaceable in the thermoforming press 1 relative to the press base 4 and the lower tool 3.
- Both the upper tool 2 and the lower tool 3 each have a forming jaw 6 and 7 and a support jaw 8 and 9, which are displaceable relative to each other.
- 9 linear drives 10 in the form of piston-cylinder units, in particular of hydraulic cylinders are connected between the mold jaw 6, 7 and the support jaw 8.
- a block position B as in the Figures 2 and 3 can be seen, the support jaws 8, 9 are positively against each of the support jaw 8, 9 facing back 11, 12 of the mold jaws 6, 7 at.
- block position B form the support jaw 8 and 9 and the mold jaw 6 and 7 so a massive unit.
- a cooling gap 13 or 14 is formed between the shaping jaw 6, 7 and the support jaw 8, 9.
- a coolant KM can be passed.
- the mold jaws 6, 7 each have a shape geometry 15, 16, which correspond to one another and is matched to the contour of a sheet metal profile to be formed.
- the shape geometry 16 of the forming jaw 7 of the lower die 3 forms a dome-like male part protruding from the base surface 17 of the forming jaw 7, which forms a receiving geometry (die) forming the same shape in the diametrically opposed, in relation to the base surface 18 of the shaping jaw 6 immersed during the forming process.
- a shaping jaw 6 or 7 consists of a thin steel shell with a shape geometry 15, 16 formed in accordance with the component to be produced.
- the wall thickness s of the shaping jaw 6, 7 in the area of the shape geometry 15, 16 is consistently strong and preferably has a wall thickness s of 5 mm to 10 mm.
- the mold jaws 6, 7 and the support jaws 8, 9 are sealed against each other via a respective seal 23.
- the seal 23 is integrated in a groove 24 in the mold jaw 6 and 7, respectively.
- the groove 24 is located above or below the coolant connections 19, 20.
- thermoforming press 1 Before the forming process of a metal sheet 25, the thermoforming press 1 is open and the upper tool 2 as well as the lower tool 3 are in the cooling position K.
- the cooling gap 13, 14 is open, so that a massive flow of coolant KM through the cooling gap 13, 14 allows is.
- the cooling gap 13, 14 extends on the back of the jaw 8, 9 facing back 11, 12 of the mold jaw 6, 7 over the surface of the mold geometry 15, 16 of the mold jaw 6, 7 and that at a short distance a, which the wall thickness s of the mold jaw 6, 7 in the area of the shape geometry 15, 16 corresponds to ( FIG. 1 ).
- the cooling gap 13, 14 is closed and the mold jaws 6, 7 and the support jaws 8, 9 brought from upper tool 2 and lower tool 3 in the blocking position B ( FIG. 2 ).
- thermoforming press 1 then heated to hardening temperature metal sheet 25 is inserted. Subsequently, the thermoforming press 1 is closed and the metal sheet 25 is formed into the sheet metal profile 26, as based on the FIG. 3 to recognize.
- the press carriage 5 is moved together with the upper tool 2 down. In this case, the metal sheet 25 is pulled into the shape geometry 15, 16 and formed into the sheet profile 26.
- thermoforming press 1 After complete closing of the thermoforming press 1, the actual forming process of the metal sheet 25 is completed.
- the clamping force of the thermoforming press 1 is only needed to maintain the contact between the sheet metal profile 26 and the upper tool 2 and the lower tool 3.
- the cooling gaps 13, 14 are opened again ( FIG. 4 ).
- the mold jaws 6, 7 and the support jaws 8, 9 are again in the cooling position K and coolant KM flows over the entire surface and at a short distance a to the hot-formed sheet metal profile 26 through the cooling gaps 13, 14. Due to the small distance a between the hot sheet metal profile 26th and the coolant KM and the full-surface coolant entry is a very good heat dissipation from the sheet metal profile 26 and thus achieves an efficient cooling or hardening process.
- thermoforming press 1 After completion of the curing process, the thermoforming press 1 is opened again. This is done with the cooling gap 13, 14 open so that the mold jaws 6, 7 are further cooled. The finished shaped and hardened sheet metal profile 26 can be removed from the thermoforming press 1 and begin the forming process anew.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (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)
Abstract
Description
Die Erfindung betrifft eine Warmformpresse gemäß den Merkmalen im Oberbegriff von Anspruch 1.The invention relates to a thermoforming press according to the features in the preamble of
Durch die
Die indirekte Kühlung erfolgt über Kühlkanäle, welche in Form von Bohrungen oder Schlitzen (Schachtkühlung) in einem definierten Abstand zur Umformoberfläche in das Werkzeug eingebracht sind. Durch diese Kühlkanäle fließt ein Kühlmedium, häufig Wasser, dass die von dem warmen Blechprofil an das Werkzeug abgegebene Wärme nach außen abführt. Die Kühlkanäle werden üblicherweise in das Werkzeug gebohrt. Die Anfertigung solcher Bohrungen ist herstellungstechnisch aufwendig und kostenintensiv. Auch können die Bohrungen häufig der dreidimensionalen Struktur der Werkzeugoberfläche nur bedingt folgen. Dadurch wird der Abstand zwischen der Werkzeugoberfläche und den Kühlmittelkanälen relativ groß, wodurch die Kühlwirkung abnimmt.The indirect cooling takes place via cooling channels, which are introduced in the form of holes or slots (shaft cooling) at a defined distance from the forming surface in the tool. Through these cooling channels flows a cooling medium, often water, that dissipates the heat given off by the warm metal profile to the tool to the outside. The cooling channels are usually drilled in the tool. The preparation of such holes is manufacturing technically complex and costly. The holes can often follow the three-dimensional structure of the tool surface only partially. As a result, the distance between the tool surface and the coolant channels is relatively large, whereby the cooling effect decreases.
Auch die
Bei der aus der
Eine direkte Kühlung in einer Warmformpresse ist aus der
Der Erfindung liegt ausgehend vom Stand der Technik die Aufgabe zu Grunde eine anlagen- und anwendungstechnisch verbesserte Warmformpresse zum Umformen und Härten von Metallblechen zu schaffen, mit verbesserter Kühlwirkung und verringerter Prozesszeit.The invention is based on the prior art based on the object to provide a plant and application technology improved thermoforming press for forming and hardening of metal sheets, with improved cooling effect and reduced process time.
Die Lösung dieser Aufgabe besteht nach der Erfindung in einer Warmformpresse gemäß den Merkmalen von Anspruch 1.The solution of this problem consists according to the invention in a thermoforming press according to the features of
Danach ist vorgesehen, dass das Oberwerkzeug und/oder das Unterwerkzeug der Warmformpresse zweiteilig aufgebaut ist und eine Formbacke und eine Stützbacke umfasst. Die Formbacke und die Stützbacke sind relativ zueinander verlagerbar, wobei die Stützbacke in einer Blockstellung an der Formbacke anliegt und in einer Kühlstellung von der Formbacke beabstandet ist, so dass zwischen der Formbacke und der Stützbacke eine Kühlspalt ausgebildet ist, durch welchen ein Kühlmittel leitbar ist.Thereafter, it is provided that the upper tool and / or the lower tool of the thermoforming press is constructed in two parts and includes a mold jaw and a support jaw. The mold jaw and the jaw are displaceable relative to each other, wherein the support jaw rests in a blocking position on the mold jaw and is spaced in a cooling position of the mold jaw, so that between the mold jaw and the support jaw, a cooling gap is formed through which a coolant is conductive.
Auf diese Weise wird ein Kühlsystem für die Warmformpresse geschaffen, bei dem der Abstand zwischen der Kühlmittelführung und der Werkzeugoberfläche bzw. der Umformfläche in der Formbacke minimiert werden kann. Hierdurch kann die Kühlung während des Umformprozesses kontinuierlich gewährleistet werden. Demzufolge ergibt sich eine minimale Verweildauer der Pressteile in der Warmformpresse und damit eine maximierte Wirtschaftlichkeit.In this way, a cooling system for the thermoforming press is provided, in which the distance between the coolant guide and the tool surface or the forming surface in the mold block can be minimized. As a result, the cooling can be ensured continuously during the forming process. Consequently, there is a minimum residence time of the pressed parts in the hot-forming press and thus a maximized economy.
Vor dem Umformvorgang befinden sich Formbacke und Stützbacke in der Kühlstellung, so dass Kühlmittel durch den Kühlspalt strömen kann. Hierdurch wird die Formbacke und insbesondere deren Formgeometrie gekühlt. Zum eigentlichen Umformvorgang wird der Kühlspalt geschlossen und die Formbacke und die Stützbacke in die Blockstellung überführt, bei der die Stützbacke an der Formbacke anliegt. Stützbacke und Formbacke bilden quasi eine Einheit. Hierdurch wird eine ausreichend hohe Werkzeugstabilität beim Umformprozess erreicht, welche die Übertragung von hohen Pressendrücken ermöglicht.Before the forming process are form jaw and jaw in the cooling position, so that coolant can flow through the cooling gap. As a result, the mold jaw and in particular its shape geometry is cooled. For the actual forming process, the cooling gap is closed and transferred the forming jaw and the jaw in the blocking position, in which the support jaw rests against the forming jaw. Supporting jaw and form jaw are virtually a unit. As a result, a sufficiently high tool stability is achieved during the forming process, which allows the transmission of high pressure pressures.
Die Warmformpresse wird dann zugefahren und das Metallblech zwischen Oberwerkzeug und Unterwerkzeug zum Blechprofil umgeformt. Nach dem vollständigen Schließen der Warmformpresse hat die Umformung des Metallblechs stattgefunden. Die Zuhaltekraft der Warmformpresse wird nur noch zur Aufrechterhaltung des Kontakts zwischen dem hergestellten Blechprofil und dem Oberwerkzeug sowie dem Unterwerkzeug zwecks Wärmeübertragung beim Kühl- bzw. Härtevorgang benötigt. In diesem Zustand wird der Kühlspalt zwischen der Formbacke und der Stützbacke wieder geöffnet. Kühlmittel strömt vollflächig und mit kurzem Abstand zum warmen Bauteil durch den Kühlspalt. Hierdurch kann eine optimale Kühlung erreicht werden. Bis zum erneuten Schließen der Warmformpresse wird der Kühlspalt aufrechterhalten.The thermoforming press is then closed and the metal sheet formed between the upper tool and lower tool to the sheet metal profile. After complete closing of the thermoforming press, the deformation of the metal sheet has taken place. The clamping force of the thermoforming press is only needed to maintain the contact between the produced sheet metal profile and the upper tool and the lower tool for the purpose of heat transfer during cooling or hardening process. In this state, the cooling gap between the forming jaw and the jaw is opened again. Coolant flows through the cooling gap over the entire surface and at a short distance from the warm component. As a result, optimal cooling can be achieved. Until the resealing of the thermoforming press, the cooling gap is maintained.
Grundsätzlich ist es auch möglich die Formbacke und die Stützbacke während des Härtevorgangs in der Blockstellung zu belassen, weil die Wärmeabfuhr über das geschlossene Ober- und Unterwerkzeug ausreicht um die Härtung durchzuführen. Erst beim anschließenden Öffnen der Warmformpresse wird dann auch der Kühlspalt geöffnet, um das Ober- bzw. das Unterwerkzeug zurückzukühlen.In principle, it is also possible to leave the shaping jaw and the supporting jaw in the blocking position during the hardening process, because the heat dissipation via the closed upper and lower tool is sufficient to carry out the hardening. It is only during the subsequent opening of the thermoforming press that the cooling gap is then opened in order to recool the upper or lower tool.
Vorteilhafte Ausgestaltungen des grundsätzlichen Erfindungsgedankens sind Gegenstand der abhängigen Ansprüche 2 bis 8.Advantageous embodiments of the basic concept of the invention are the subject of the
Vorzugsweise liegt die Stützbacke in der Blockstellung formschlüssig an der Formbacke an. Die einander kontaktierenden Flächen von Stützbacke und Formbacke sind in ihrer Kontur aufeinander abgestimmt und korrespondieren miteinander.Preferably, the support jaw in the blocking position is positively against the forming jaw. The contacting surfaces of the jaw and form jaw are matched in their contour and correspond to each other.
In der Kühlstellung erstreckt sich der Kühlspalt auf der der Stützbacke zugewandten Rückseite der Formbacke über die Fläche der Formgeometrie der Formbacke.In the cooling position, the cooling gap extends on the rear side of the shaping jaw facing the support jaw over the surface of the shape geometry of the shaping jaw.
Zur Verlagerung der Formbacke und der Stützbacke relativ zueinander kommen Linearantriebe zur Anwendung. Grundsätzlich sind verschiedene Ausführungsformen von Linearantrieben möglich. Für die Praxis bieten sich Linearantriebe in Form von Kolben-Zylinder-Einheiten an, insbesondere ist hierbei an den Einsatz von Hydraulikzylindern gedacht.For the displacement of the mold jaw and the jaw relative to each other linear drives are used. In principle, various embodiments of linear drives are possible. In practice, linear drives in the form of piston-cylinder units offer, in particular, this is intended to the use of hydraulic cylinders.
Die Zuleitung von Kühlmittel in den Kühlspalt, ebenso wie die Ableitung des Kühlmittels aus dem Kühlspalt erfolgt über Kühlmittelanschlüsse. Diese sind vorzugsweise in der Stützbacke vorgesehen.The supply of coolant into the cooling gap, as well as the discharge of the coolant from the cooling gap via coolant connections. These are preferably provided in the support jaw.
Um den Austritt von Kühlmittel über die Bewegungs- bzw. Führungsflächen zwischen Formbacke und Stützbacke zu verhindern ist zwischen diese zumindest eine Dichtung integriert. Diese befindet sich in den sich gegenüberliegenden Führungsflächen der Formbacke und/oder der Stützbacke.In order to prevent the escape of coolant through the movement or guide surfaces between the mold jaw and the jaw at least one seal is integrated between them. This is located in the opposite guide surfaces of the mold jaw and / or the jaw.
Zweckmäßigerweise ist die Dichtung in einer Nut in der Stützbacke oberhalb bzw. unterhalb des Kühlmittelanschlusses vorgesehen.The seal is expediently provided in a groove in the support jaw above or below the coolant connection.
Die Formbacke besteht vorzugsweise aus einer dünnen Stahlschale mit einer entsprechend dem herzustellenden Bauteil ausgebildeten Formgeometrie. Korrespondierend hierzu ist die Stützbacke geformt. Die Formbacke weist eine Wandstärke von 4 mm bis 15 mm, vorzugsweise von 5 mm bis 10 mm auf. Aufgrund der vergleichsweise dünnen Wandstärke der Formbacke ist ein guter Wärmeaustausch zwischen Kühlmittel und dem warm umgeformtem Bauteil möglich.The shaping jaw preferably consists of a thin steel shell with a shape geometry designed in accordance with the component to be produced. Corresponding to this, the support jaw is shaped. The mold jaw has a wall thickness of 4 mm to 15 mm, preferably from 5 mm to 10 mm. Due to the comparatively thin wall thickness of the mold jaw, a good heat exchange between the coolant and the hot-formed component is possible.
Die Erfindung ist nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispiels näher beschrieben. Es zeigen:
Figur 1- im Schema in einem vertikalen Querschnitt eine erfindungsgemäße Warmformpresse in der Offenstellung mit geöffnetem Kühlkanal;
Figur 2- die Warmformpresse immer noch in geöffnetem Zustand jedoch mit geschlossenem Kühlkanal;
Figur 3- die Warmformpresse in der unteren Schließstellung beim Umformvorgang und
Figur 4- die Warmformpresse immer noch in der Schließstellung, jedoch mit geöffnetem Kühlkanal.
- FIG. 1
- in the diagram in a vertical cross section, a hot forming press according to the invention in the open position with open cooling channel;
- FIG. 2
- the thermoforming press still in the open state but with closed cooling channel;
- FIG. 3
- the thermoforming press in the lower closed position during the forming process and
- FIG. 4
- the thermoforming press is still in the closed position, but with the cooling channel open.
Anhand der
Die Warmformpresse 1 umfasst im Wesentlichen ein Oberwerkzeug 2 und ein Unterwerkzeug 3. Das Unterwerkzeug 3 ist auf einer Pressenbasis 4 angeordnet. Das Oberwerkzeug 2 ist an einem Pressenschlitten 5 festgelegt, welcher in der Warmformpresse 1 relativ zur Pressenbasis 4 und dem Unterwerkzeug 3 vertikal verlagerbar ist.The
Sowohl das Oberwerkzeug 2 als auch das Unterwerkzeug 3 weisen jeweils eine Formbacke 6 bzw. 7 und eine Stützbacke 8 bzw. 9 auf, welche relativ zueinander verlagerbar sind. Hierzu sind zwischen die Formbacke 6, 7 und die Stützbacke 8, 9 Linearantriebe 10 in Form von Kolben-Zylinder-Einheiten, insbesondere von Hydraulikzylindern geschaltet.Both the
In einer Blockstellung B, wie in den
In einer Kühlstellung K sind die Formbacke 6, 7 und die Stützbacke 8, 9 mit Abstand a zueinander angeordnet, so dass zwischen der Formbacke 6, 7 und der Stützbacke 8, 9 ein Kühlspalt 13 bzw. 14 ausgebildet ist. Durch den Kühlspalt 13, 14 ist ein Kühlmittel KM leitbar.In a cooling position K, the shaping
Die Formbacken 6, 7 weisen jeweils eine Formgeometrie 15, 16 auf, welche miteinander korrespondieren und auf die Kontur eines umzuformenden Blechprofils abgestimmt ist. In dem hier dargestellten Ausführungsbeispiel bildet die Formgeometrie 16 der Formbacke 7 des Unterwerkzeugs 3 eine gegenüber der Grundfläche 17 der Formbacke 7 vorstehende domartige Patrize, welche in die gegengleich ausgebildete, gegenüber der Grundfläche 18 der Formbacke 6 nach innen eine Aufnahme (Matrize) bildende Formgeometrie 15 beim Umformvorgang eintaucht.The
Eine Formbacke 6 bzw. 7 besteht aus einer dünnen Stahlschale mit einer entsprechend dem herzustellenden Bauteil ausgebildeten Formgeometrie 15, 16. Die Wandstärke s der Formbacke 6, 7 im Bereich der Formgeometrie 15, 16 ist gleich bleibend stark und weist vorzugsweise eine Wandstärke s von 5 mm bis 10 mm auf.A shaping
Die Zu- bzw. Abführung von Kühlmittel KM in die Kühlspalte 13, 14 erfolgt über Kühlmittelanschlüsse 19, 20, welche durch die gegenüber der Formbacke 6, 7 breiter ausgeführten Seitenbereiche 21, 22 geführt sind. In der Kühlstellung K gelangen die Kühlmittelanschlüsse 19, 20 mit den Kühlspalte 13 bzw. 14 in leitende Verbindung, so dass Kühlmittel KM durch die Kühlspalte 13, 14 fließen kann.The supply and removal of coolant KM in the cooling
Man erkennt des Weiteren, dass die Formbacken 6, 7 und die Stützbacken 8, 9 über je eine Dichtung 23 gegeneinander abgedichtet sind. Die Dichtung 23 ist in einer Nut 24 in der Formbacke 6 bzw. 7 integriert. Die Nut 24 befindet sich oberhalb bzw. unterhalb der Kühlmittelanschlüsse 19, 20.It can be seen further that the
Vor dem Umformvorgang eines Metallblechs 25 ist die Warmformpresse 1 geöffnet und das Oberwerkzeug 2 ebenso wie das Unterwerkzeug 3 befinden sich in der Kühlstellung K. Der Kühlspalt 13, 14 ist geöffnet, so dass ein massiver Fluss von Kühlmittel KM durch den Kühlspalt 13, 14 ermöglicht ist. Der Kühlspalt 13, 14 erstreckt sich auf der der Stützbacke 8, 9 zugewandten Rückseite 11, 12 der Formbacke 6, 7 über die Fläche der Formgeometrie 15, 16 der Formbacke 6, 7 und zwar mit geringem Abstand a, welcher der Wandstärke s der Formbacke 6, 7 im Bereich der Formgeometrie 15, 16 entspricht (
Zum Umformen des Metallblechs 25 wird der Kühlspalt 13, 14 geschlossen und die Formbacken 6, 7 und die Stützbacken 8, 9 von Oberwerkzeug 2 und Unterwerkzeug 3 in die Blockstellung B gebracht (
In die Warmformpresse 1 wird dann das auf Härtetemperatur erhitzte Metallblech 25 eingelegt. Anschließend wird die Warmformpresse 1 geschlossen und das Metallblech 25 zum Blechprofil 26 umgeformt, wie anhand der
Nach dem vollständigen Schließen der Warmformpresse 1 ist der eigentliche Umformvorgang des Metallblechs 25 abgeschlossen. Die Zuhaltekraft der Warmformpresse 1 wird nur noch zur Aufrechterhaltung des Kontaktes zwischen dem Blechprofil 26 und dem Oberwerkzeug 2 sowie dem Unterwerkzeug 3 benötigt. In dieser Phase werden die Kühlspalte 13, 14 wieder geöffnet (
Nach Abschluss des Härtevorgangs wird die Warmformpresse 1 wieder geöffnet. Dies geschieht bei geöffnetem Kühlspalt 13, 14 so dass die Formbacken 6, 7 weiter gekühlt werden. Das fertig geformte und gehärtete Blechprofil 26 kann aus der Warmformpresse 1 entnommen werden und der Umformvorgang von neuem beginnen.After completion of the curing process, the
- 1 -1 -
- WarmformpresseThermoforming press
- 2 -2 -
- Oberwerkzeugupper tool
- 3 -3 -
- Unterwerkzeuglower tool
- 4 -4 -
- PressenbasisPress base
- 5 -5 -
- Pressenschlittenpress slide
- 6 -6 -
- Formbackeforming jaw
- 7 -7 -
- Formbackeforming jaw
- 8 -8th -
- Stützbackesupporting cheek
- 9 -9 -
- Stützbackesupporting cheek
- 10 -10 -
- Linearantrieblinear actuator
- 11 -11 -
- Rückseite v. 6Backside v. 6
- 12 -12 -
- Rückseite v. 7Backside v. 7
- 13 -13 -
- Kühlspaltcooling gap
- 14 -14 -
- Kühlspaltcooling gap
- 15 -15 -
- Formgeometrieshape geometry
- 16 -16 -
- Formgeometrieshape geometry
- 17 -17 -
- Grundfläche v. 7Base area v. 7
- 18 -18 -
- Grundfläche v. 6Base area v. 6
- 19 -19 -
- KühlmittelanschlussCoolant connection
- 20 -20 -
- KühlmittelanschlussCoolant connection
- 21 -21 -
- Seitenbereich v. 6, 7Page area v. 6, 7
- 22 -22 -
- Seitenberich v. 6, 7Seitenberich v. 6, 7
- 23 -23 -
- Dichtungpoetry
- 24 -24 -
- Nutgroove
- 25 -25 -
- Metallblechmetal sheet
- 26 -26 -
- Blechprofilmetal profile
- B -B -
- Blockstellungblock position
- K -K -
- Kühlstellungcooling position
- KM -KM -
- Kühlmittelcoolant
- a -a -
- Abstanddistance
- s -s -
- Wandstärke v. 6 bzw. 7Wall thickness v. 6 or 7
Claims (8)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007056186A DE102007056186B3 (en) | 2007-11-21 | 2007-11-21 | Hot deforming press for deforming and hardening metal sheets comprises an upper tool and a lower tool with molding jaws and supporting jaws which can be displaced relative to each other |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2062987A1 true EP2062987A1 (en) | 2009-05-27 |
EP2062987B1 EP2062987B1 (en) | 2010-01-06 |
Family
ID=40092814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08018035A Expired - Fee Related EP2062987B1 (en) | 2007-11-21 | 2008-10-15 | Heat form press |
Country Status (4)
Country | Link |
---|---|
US (1) | US8001821B2 (en) |
EP (1) | EP2062987B1 (en) |
JP (1) | JP4819858B2 (en) |
DE (1) | DE102007056186B3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102380534A (en) * | 2010-09-02 | 2012-03-21 | 丰田纺织株式会社 | Producing method of compact |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102010004081C5 (en) | 2010-01-06 | 2016-11-03 | Benteler Automobiltechnik Gmbh | Method for thermoforming and curing a circuit board |
KR101216518B1 (en) * | 2010-01-08 | 2012-12-31 | 주식회사 신영 | Hot press mold having cooling system |
US8671729B2 (en) * | 2010-03-02 | 2014-03-18 | GM Global Technology Operations LLC | Fluid-assisted non-isothermal stamping of a sheet blank |
DE102010035339B4 (en) * | 2010-08-24 | 2012-05-24 | Benteler Automobiltechnik Gmbh | Process for the production of molded components from a board of hardened hot-forming steel sheet |
WO2012161192A1 (en) | 2011-05-23 | 2012-11-29 | 新日鐵住金株式会社 | Hot press molding method and hot press molding die |
EP2583766B1 (en) * | 2011-10-21 | 2019-04-17 | EDAG Werkzeug + Karosserie GmbH | Forming with cooling |
DE102012210958A1 (en) * | 2012-06-27 | 2014-04-03 | Bayerische Motoren Werke Aktiengesellschaft | Cooled tool for hot working and / or press hardening of a sheet metal material and method for producing a cooling device for this tool |
CN103184330B (en) * | 2013-01-11 | 2014-08-06 | 滁州亚利模具设备有限公司 | Die |
CN104120227A (en) * | 2013-01-11 | 2014-10-29 | 滁州亚利模具设备有限公司 | Die |
JP6381967B2 (en) * | 2014-05-22 | 2018-08-29 | 住友重機械工業株式会社 | Molding apparatus and molding method |
JP2016140893A (en) * | 2015-02-03 | 2016-08-08 | 豊田鉄工株式会社 | Hot press molding apparatus, and hot press molding method |
US9943901B2 (en) * | 2015-08-31 | 2018-04-17 | Ford Global Technologies, Llc | Adjustable stamping die |
KR102347724B1 (en) * | 2021-03-08 | 2022-01-07 | 대우공업 (주) | Cooling structure of warm forming press molding adapted for simultaneous forming of carbon fiber reinforced polymer and metal plate |
KR102309443B1 (en) * | 2021-03-08 | 2021-10-05 | 대우공업 (주) | Rapid cooling structure of warm forming press molding |
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- 2008-11-12 JP JP2008289831A patent/JP4819858B2/en not_active Expired - Fee Related
- 2008-11-19 US US12/273,914 patent/US8001821B2/en not_active Expired - Fee Related
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CN102380534A (en) * | 2010-09-02 | 2012-03-21 | 丰田纺织株式会社 | Producing method of compact |
CN102380534B (en) * | 2010-09-02 | 2014-10-29 | 丰田纺织株式会社 | Producing method of compact |
Also Published As
Publication number | Publication date |
---|---|
JP2009125808A (en) | 2009-06-11 |
EP2062987B1 (en) | 2010-01-06 |
JP4819858B2 (en) | 2011-11-24 |
US8001821B2 (en) | 2011-08-23 |
US20090126447A1 (en) | 2009-05-21 |
DE102007056186B3 (en) | 2009-01-08 |
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