EP1402968B1 - Hemming device - Google Patents

Hemming device Download PDF

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Publication number
EP1402968B1
EP1402968B1 EP03101031A EP03101031A EP1402968B1 EP 1402968 B1 EP1402968 B1 EP 1402968B1 EP 03101031 A EP03101031 A EP 03101031A EP 03101031 A EP03101031 A EP 03101031A EP 1402968 B1 EP1402968 B1 EP 1402968B1
Authority
EP
European Patent Office
Prior art keywords
flanging
tool
crimping
bed
support structure
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.)
Expired - Lifetime
Application number
EP03101031A
Other languages
German (de)
French (fr)
Other versions
EP1402968A1 (en
Inventor
Artur Ruescher
Bruno Strausfeld
Ralph Hoffstadt
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.)
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Original Assignee
Ford Werke GmbH
Ford France SA
Ford Motor Co Ltd
Ford Motor Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Werke GmbH, Ford France SA, Ford Motor Co Ltd, Ford Motor Co filed Critical Ford Werke GmbH
Priority to DE59914012T priority Critical patent/DE59914012D1/en
Priority to EP06115742A priority patent/EP1702692B1/en
Priority to ES03101031T priority patent/ES2277029T3/en
Priority to DE59914683T priority patent/DE59914683D1/en
Priority to EP03101031A priority patent/EP1402968B1/en
Priority claimed from EP99123455A external-priority patent/EP1103320B1/en
Publication of EP1402968A1 publication Critical patent/EP1402968A1/en
Application granted granted Critical
Publication of EP1402968B1 publication Critical patent/EP1402968B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/10Die sets; Pillar guides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/14Particular arrangements for handling and holding in place complete dies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/02Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
    • B21D39/021Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder for panels, e.g. vehicle doors

Definitions

  • the invention relates to a crimping device for sheets, in particular for body panels in vehicle construction according to the preamble of claim 1.
  • a crimping device for sheets, in particular for body panels in vehicle construction according to the preamble of claim 1.
  • Such a device is known from FR-A-2296519.
  • a crimping device in which an electromechanical drive of the crimping bed is proposed both for the offset stroke between the crimping jaws and the working stroke.
  • the flared jaws are pivotally mounted on the machine frame and are moved by means of pneumatic cylinders.
  • flanging and hold down must be individually installed and removed and adjusted, which is very time consuming and causes long downtime of the hemming.
  • the crimping device stands still for the duration of the maintenance work.
  • the invention is therefore an object of the invention to develop a crimping, which requires little time for maintenance and change of Bördelwerkmaschinemaschinees needed for simple, low-maintenance drives.
  • the hemming tool is a self-contained unit that can be transported in any way that retains its workpiece-specific settings and adjustments regardless of whether or not it is in the hemming device. For both tool maintenance and tool change, the hemming tool can be quickly and easily removed from the hemming device and replaced with another hemming tool. Necessary work on the crimping tool are performed outside of the crimping, while on the crimping device with the other crimping tool another workpiece can be edited. After re-introduction and attachment of the crimping tool in the base frame, the crimping device is immediately ready for use again.
  • the base frame includes all non-work piece specific components, these are mainly the drives for flanging and crimping jaws, and it absorbs all forces occurring during the flanging.
  • the interfaces for the transmission of driving forces are modular, so that the same drives can be used without modification for different crimping tool.
  • a crimping jack is arranged, which transmits the driving force to the hemming bed, wherein the drive of the hemming can be done both hydraulically, pneumatically or electromechanically.
  • the hemming bed is firmly connected to the crimping jack, wherein the connection manually by z. B. a screw connection or is ensured by an automatic locking. In the latter case, the crimping bed itself centered by means of suitable receptacles at the first stroke of the crimping jack after installation of the crimping tool.
  • the hemming drive is a removable unit which essentially comprises a base plate attached to the drive base plate, the movable, guided in the base frame crimping, which carries the Bördelbettt, and a drive between the drive base plate and crimping.
  • a further embodiment of the invention provides to carry out the required large Versetzhub between the crimping jaws by means of an electrically driven Spindelhubvorraum and the small stroke for the crimping by means of one or more compressed air cushion, the Spindelhubvorides is protected during the working stroke by a locking mechanism against damage to the spindle.
  • An advantageous embodiment of this embodiment provides that the crimping jack, on which rests the crimping, is part of the Spindelhubvorides.
  • the entire Spindelhubvorides is arranged including its locking mechanism on the compressed air cushion, so it is moved with each stroke. Since the compressed air cushions are arranged at the bottom of the base frame, the hemming can be carried out with a large height.
  • the resulting long guideways between crimping jack and base frame ensure the guidance of the crimping jack even with changing force application points due to the workpiece tolerances or different crimping tools.
  • the base frame has a viewed in the horizontal direction continuous tool holder of at least the size of the hemming tool.
  • the crimping tool can be pushed in and out of the base frame from any desired side into the base frame.
  • the clamping of the crimping tool in the base frame can be done as a manual screw or fully automatically by means of electromechanical clamping elements depending on the required tool change time.
  • the crimping tools when changing the changeover tables are mounted on one or both sides of the tool holder on the base frame. There, the crimping tools can be serviced directly or prepared for further transport. In the shuttle tables and the devices for pulling or pushing the crimping tools are arranged.
  • a particular embodiment of the crimping device provides the drives for the crimping jaws in the base frame laterally on the tool holder. At the corresponding point in the crimping tool there are crimping slides with crimping jaws, whereby the crimping jaws are displaceable into the working area of the crimping bed.
  • the drive may be effected directly or via an inclined plane.
  • corresponding return devices such as inclined planes, compression springs or the like are provided in the crimping tool. Due to this form of power transmission, no further coupling of the crimping slide with the crimping drives is required during assembly of the crimping tool; it is sufficient to position the crimping tool in the intended installation position in the base frame.
  • a further embodiment of the crimping tool according to the invention provides a base plate and a cover plate, both of which form the tool frame with spacers at the corners. Between the base and cover plate are the movable flare slides. In the middle, the base plate has a breakthrough of at least the size of the crimping bed. In this breakthrough, the hemming bed is fixed during the tool change and transport, with the hemming bed then being designed so that it does not protrude down beyond the contour of the base plate.
  • Both the cover plate of the hemming tool and the top of the Base frame have a breakthrough of at least the size of the workpiece, through which the crimping tool can be loaded from above with the workpiece.
  • the workpiece itself is held in the flanging bed by hold-down during the flanging process.
  • the holding-down device can be integrated in the flanging tool or arranged on the upper side of the base frame, or the function of the hold-down device can be completely taken over by the robot arm, which also loads the flanging device with the workpiece.
  • a lowered position in the base frame is provided for the crimping bed.
  • the crimping tool can be removed without the crimping bed from the base frame. This position is intended for short-term maintenance on the flared jaws and allows easier access to them.
  • a flanging device which is composed of the two essential components of the base frame 1 and crimping tool 2.
  • the base frame 1 contains only body part-independent standard elements:
  • the base frame 3 as a central element takes on guided with sliding plates 4 Bördelheber 5 for the flanging.
  • a maintenance stakeout 6 for the crimping jack 5 makes it possible to fix the crimping jack 5 during maintenance work.
  • the bottom plate 7 is provided for the attachment of the crimping device on the ground.
  • Above completes the base frame with the frame top plate 8, in which also necessary for the crimping tool 2 clamping and centering units 9 are arranged.
  • the workpiece opening 10 in the frame cover plate 8 is used to load the hemming tool 2 with the workpiece 11. Between the base frame 3 and the frame cover plate 8 there is the continuous tool holder 12 for receiving the hemming tool 2 in the base frame 1.
  • the tool frame of the crimping tool 2 consists of a base plate 13, a cover plate 14 and the spacers 15, which are arranged at the four corners of the tool frame.
  • the alignment and attachment of the crimping tool 2 in the base frame 1 is carried out by the clamping and centering units 9.
  • Between base plate 13 and cover plate 14 are the movable crimping slide 16 with the 45 ° crimping jaws 17 for prebending and the 90 ° crimping jaws 18 for finish crimping.
  • the base plate 13 has an opening 19 of at least the size of the flanging bed 20.
  • the hemming bed 20, which serves to receive the workpiece 11, is loosely arranged in the hemming tool 2 and firmly connected to the hemming jack 5.
  • the hemming drive 21, which acts on the hemming jack 5 is arranged on the bottom plate 7 of the base frame 1.
  • the hemming drive has a hemming drive base plate 22, which is screwed to the base plate 7 of the base frame 1.
  • the compressed air cushion 24 are arranged to perform the working stroke for the flanging by lifting the work base plate 23.
  • a double column guide 25 is provided for the exact alignment of Bördelantriebsgroundplatte 22 and Hähubgroundplatte 23 . A uniform distance between the two plates at rest is ensured by the spacers 26.
  • the offset stroke between the crimping jaws is carried out by the spindle lifting device, which is arranged on Hähubgroundplatte 23.
  • the electric motor 27, the gear 28 and the driven spindle 29 raise or lower the crimping jack 5 'according to the desired offset stroke.
  • the spindle 29 is relieved by a Verriegelungsmechnismus. This consists of two or more on the Häshubgroundplatte 23 slidably arranged Abstandsklötzen 30 which are moved by the positioning means 31 so under the crimping jack 5 ', either the upper shoulder 32 or the lower shoulder 33 the crimping jack 5' store and thereby the essential Transferring forces of the working stroke.
  • FIG. 3 A view of the flanging device with changing tables 34 is shown in FIG. 3 .
  • the changing tables 34 make it possible to push the crimping tools 2 to the right or left from the base frame 1. While a hemming 2 is still in the base frame 1 and the crimping device is in operation, located on the shuttle table 34 flanging tool 2 'is maintained, adjusted or prepared for use.
  • FIGs. 4a - 4c Various stages in the crimping tool 2 are shown in Figs. 4a - 4c .
  • 4a shows the Vorbördelung of the workpiece 11.
  • the hemming bed 20 is located at the height of the 45 ° crimping jaws 17 which are arranged on the Bördelschiebern 16.
  • the Vorbördelung the workpiece 11 is effected.
  • Fig. 4b shows the crimping tool 2 during the offset stroke.
  • the crimping slide 16 have moved outward, and thus all the crimping jaws 17, 18 are removed from the working area of the crimping bed 20.
  • the hemming bed 20 is raised to the Fertigbördelposition, as shown in Fig. 4c.
  • the crimping jaws travel again into the working area of the crimping bed 20.
  • the workpiece 11 is finish crimped to the 90 ° crimping jaws 18.
  • FIG. 5 shows a top view of the crimping slides and their arrangement in a crimping tool 35 according to the invention.
  • the crimping jaws 36 following the contour of the workpiece 11 are movable into the working area of the crimping bed by being mounted on the crimping slides 37, 38.
  • the drives 39 of the crimping jaws are arranged laterally on the tool opening 12 of the base frame 2 and directly transmit a compressive force on the crimping tool 35.
  • this driving force can be converted into a direct, rectilinear movement into the working area the crimping bed 20 are implemented.
  • a return mechanism 40 is provided which applies the return force by means of compression springs, compressed air cylinders or the like.
  • the end face arranged flare 38 have a direction perpendicular to the drives 39 movement direction. Therefore, the actuators 39 first act on auxiliary slides 41, which generate the required movement of the crimping slide 38 into the working area of the crimping bed 20 via an inclined plane 42. Again, a return mechanism 40 is provided in order to drive back the crimping slide can again.
  • FIG. 6 shows how, for short-term maintenance work on the hemming tool 2, the hemming bed 20 is lowered into a maintenance position 43 within the base frame 1 and then the hemming tool 2 is pushed onto the shuttle table 34 without a hemming bed 20.
  • the hemming tool 2 is returned to the base frame 1, the hemming device is immediately ready for use.

Description

Die Erfindung bezieht sich auf eine Bördelvorrichtung für Bleche, insbesondere für Karosseriebleche im Fahrzeugbau gemäß dem Oberbegriff des Anspruches 1. Eine derartige Vorrichtung ist aus der FR-A-2296519 bekannt.The invention relates to a crimping device for sheets, in particular for body panels in vehicle construction according to the preamble of claim 1. Such a device is known from FR-A-2296519.

Aus der DE 19801561 ist eine Bördelvorrichtung bekannt, bei der ein elektromechanischer Antrieb des Bördelbettes sowohl für den Versatzhub zwischen den Bördelbacken als auch den Arbeitshub vorgeschlagen wird. Die Bördelbacken sind schwenkbar am Maschinengestell gelagert und werden mittels Pneumatikzylindern bewegt. Für einen Werkzeugwechsel müssen Bördelbacken, Bördelbett und Niederhalter einzeln ein- und ausgebaut und justiert werden, was insgesamt sehr zeitaufwendig ist und lange Stillstandszeiten der Bördelvorrichtung bewirkt. Bei notwendigen Wartungsarbeiten gilt das gleiche; auch hier steht die Bördelvorrichtung für die Dauer der Wartungsarbeiten still.From DE 19801561 a crimping device is known, in which an electromechanical drive of the crimping bed is proposed both for the offset stroke between the crimping jaws and the working stroke. The flared jaws are pivotally mounted on the machine frame and are moved by means of pneumatic cylinders. For a tool change crimping jaws, flanging and hold down must be individually installed and removed and adjusted, which is very time consuming and causes long downtime of the hemming. For necessary maintenance the same applies; Here, too, the crimping device stands still for the duration of the maintenance work.

Hydraulische Antriebe von Bördelvorrichtungen sind laut und fordern einen erhöhten Wartungsaufwand. Es wird deshalb versucht, andere Antriebe einzusetzen wie z. B. auf die oben beschriebene elektromechanische Art. Aus der DE 19747291 ist ein Vorrichtung zum Falzen von Blechen bekannt, die mittels pneumatischer Luftkissen den Arbeitshub ausführt, indem die Luftkissen direkt auf den Stößel für den Falzvorgang wirken. Nachteilig ist hier, daß das Falzwerkzeug Bestandteil des Antriebes ist und damit beim Werkzeugwechsel auch der Antrieb berührt ist.Hydraulic drives of flaring devices are noisy and require increased maintenance. It is therefore trying to use other drives such. From DE 19747291 a device for folding of sheets is known, which performs the working stroke by means of pneumatic air cushion by the air cushion act directly on the plunger for the folding process. The disadvantage here is that the folding tool is part of the drive and thus the tool change is also touched the drive.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Bördelvorrichtung zu entwickeln, die einen geringen Zeitbedarf für Wartung und Wechsel des Bördelwerkzeuges benötigt bei möglichst einfachen, wartungsarmen Antrieben.The invention is therefore an object of the invention to develop a crimping, which requires little time for maintenance and change of Bördelwerkzeuges needed for simple, low-maintenance drives.

Die Aufgabe wird gelöst mit den Merkmalen des Anspruchs 1.The object is achieved with the features of claim 1.

Das Bördelwerkzeug ist eine selbständige, beliebig transportierbare Einheit, die ihre werkstückspezifischen Einstellungen und Justierungen unabhängig davon, ob es sich in der Bördelvorrichtung oder nicht befindet, beibehält. Sowohl für die Werkzeugwartung als auch für den Werkzeugwechsel kann das Bördelwerkzeug schnell und einfach aus der Bördelvorrichtung entfernt und durch ein anderes Bördelwerkzeug ersetzt werden. Notwendige Arbeiten am Bördelwerkzeug werden außerhalb der Bördelvorrichtung durchgeführt, während auf der Bördelvorrichtung mit dem anderen Bördelwerkzeug ein anderes Werkstück bearbeitet werden kann. Nach einer erneuten Einbringung und Befestigung des Bördelwerkzeuges im Grundgestell ist die Bördelvorrichtung umgehend wieder einsatzbereit.The hemming tool is a self-contained unit that can be transported in any way that retains its workpiece-specific settings and adjustments regardless of whether or not it is in the hemming device. For both tool maintenance and tool change, the hemming tool can be quickly and easily removed from the hemming device and replaced with another hemming tool. Necessary work on the crimping tool are performed outside of the crimping, while on the crimping device with the other crimping tool another workpiece can be edited. After re-introduction and attachment of the crimping tool in the base frame, the crimping device is immediately ready for use again.

Demgegenüber beinhaltet das Grundgestell alle nicht werkstückspezifischen Komponenten, dies sind vor allem die Antriebe für Bördelbett und Bördelbacken, und es nimmt alle bei der Bördelung auftretenden Kräfte auf. Die Schnittstellen für die Übertragung der Antriebskräfte sind modular aufgebaut, so daß dieselben Antriebe ohne Änderung für verschiedene Bördelwerkzeug benutzt werden können.In contrast, the base frame includes all non-work piece specific components, these are mainly the drives for flanging and crimping jaws, and it absorbs all forces occurring during the flanging. The interfaces for the transmission of driving forces are modular, so that the same drives can be used without modification for different crimping tool.

Im Grundgestell ist ein Bördelheber angeordnet, der die Antriebskraft auf das Bördelbett überträgt, wobei der Antrieb des Bördelhebers sowohl hydraulisch, pneumatisch oder elektromechanisch erfolgen kann. Das Bördelbett ist dabei mit dem Bördelheber fest verbunden, wobei die Verbindung manuell durch z. B. eine Verschraubung oder durch eine automatische Verriegelungen sichergestellt ist. Im letzteren Fall zentriert sich das Bördelbett selbst mittels geeigneter Aufnahmen beim ersten Hub des Bördelhebers nach Einbau des Bördelwerkzeuges.In the base frame a crimping jack is arranged, which transmits the driving force to the hemming bed, wherein the drive of the hemming can be done both hydraulically, pneumatically or electromechanically. The hemming bed is firmly connected to the crimping jack, wherein the connection manually by z. B. a screw connection or is ensured by an automatic locking. In the latter case, the crimping bed itself centered by means of suitable receptacles at the first stroke of the crimping jack after installation of the crimping tool.

Eine Ausführung der Erfindung sieht vor, daß der Bördelantrieb ein wechselbare Einheit ist, die im wesentlichen eine auf dem Grundgestell befestigte Antriebsgrundplatte, den beweglichen, im Grundgestell geführten Bördelheber, der das Bördelbettt trägt, und einen Antrieb zwischen Antriebsgrundplatte und Bördelheber umfaßt.An embodiment of the invention provides that the hemming drive is a removable unit which essentially comprises a base plate attached to the drive base plate, the movable, guided in the base frame crimping, which carries the Bördelbettt, and a drive between the drive base plate and crimping.

Eine weitere erfindungsgemäße Ausführung sieht vor, den erforderlichen großen Versatzhub zwischen den Bördelbacken mittels einer elektrisch angetriebenen Spindelhubvorrichtung und den kleinen Arbeitshub für den Bördelvorgang mittels eines oder mehrerer Druckluftkissen auszuführen, wobei die Spindelhubvorrichtung während des Arbeitshubes durch einen Verriegelungsmechanismus vor einer Beschädigung der Spindel geschützt ist. Eine vorteilhafte Ausgestaltung dieser Ausführung sieht vor, daß der Bördelheber, auf dem das Bördelbett aufliegt, Teil der Spindelhubvorrichtung ist. Die gesamte Spindelhubvorrichtung ist einschließlich ihres Verriegelungsmechanismus auf den Druckluftkissen angeordnet, wird also bei jedem Arbeitshub mitbewegt. Da die Drucklufkissen am Boden des Grundgestelles angeordnet sind, kann der Bördelheber mit einer großen Bauhöhe ausgeführt werden. Die daraus resultierenden langen Führungsbahnen zwischen Bördelheber und Grundgestell sichern die Führung des Bördelhebers auch bei wechselnden Kraftangriffenspunkten aufgrund der Werkstücktoleranzen oder unterschiedlicher Bördelwerkzeuge.A further embodiment of the invention provides to carry out the required large Versetzhub between the crimping jaws by means of an electrically driven Spindelhubvorrichtung and the small stroke for the crimping by means of one or more compressed air cushion, the Spindelhubvorrichtung is protected during the working stroke by a locking mechanism against damage to the spindle. An advantageous embodiment of this embodiment provides that the crimping jack, on which rests the crimping, is part of the Spindelhubvorrichtung. The entire Spindelhubvorrichtung is arranged including its locking mechanism on the compressed air cushion, so it is moved with each stroke. Since the compressed air cushions are arranged at the bottom of the base frame, the hemming can be carried out with a large height. The resulting long guideways between crimping jack and base frame ensure the guidance of the crimping jack even with changing force application points due to the workpiece tolerances or different crimping tools.

Das Grundgestell weist eine in horizontaler Richtung gesehen durchgehende Werkzeugaufnahme von mindestens der Größe des Bördelwerkzeuges auf. Damit kann das Bördelwerkzeug von einer beliebigen Seite in das Grundgestell hinein- und aus dem Grundgestell herausgeschoben werden. Das Spannen des Bördelwerkzeuges im Grundgestell kann in Abhängigkeit von der erforderlichen Werkzeugwechselzeit als manuelle Schraubverbindung oder vollautomatisch mittels elektromechanischer Spannelemente erfolgen.The base frame has a viewed in the horizontal direction continuous tool holder of at least the size of the hemming tool. Thus, the crimping tool can be pushed in and out of the base frame from any desired side into the base frame. The clamping of the crimping tool in the base frame can be done as a manual screw or fully automatically by means of electromechanical clamping elements depending on the required tool change time.

Zur Aufnahme der Bördelwerkzeuge beim Wechseln sind am Grundgestell Wechseltische ein- oder beidseitig der Werkzeugaufnahme angebracht. Dort können die Bördelwerkzeuge direkt gewartet oder für den Weitertransport vorbereitet werden. In den Wechseltischen sind auch die Vorrichtungen zum Herausziehen bzw. Einschieben der Bördelwerkzeuge angeordnet.To accommodate the crimping tools when changing the changeover tables are mounted on one or both sides of the tool holder on the base frame. There, the crimping tools can be serviced directly or prepared for further transport. In the shuttle tables and the devices for pulling or pushing the crimping tools are arranged.

Eine besondere Ausführung der erfindungsgemäßen Bördelvorrichtung sieht die Antriebe für die Bördelbacken im Grundgestell seitlich an der Werkzeugaufnahme vor. An der entsprechenden Stelle im Bördelwerkzeug sitzen Bördelschieber mit Bördelbacken, wodurch die Bördelbacken in den Arbeitsbereich des Bördelbettes verschiebbar sind. Dabei kann der Antrieb je nach Lage des Schiebers im Bördelwerkzeug direkt oder über eine schiefe Ebene erfolgen. Für die Rückstellung der Bördelschieber sind im Bördelwerkzeug entsprechende Rückstellvorrichtungen wie schiefe Ebenen, Druckfedern oder ähnliches vorgesehen. Durch diese Form der Kraftübertragung wird keine weitere Ankopplung der Bördelschieber mit den Bördelantrieben bei der Montage des Bördelwerkzeuges benötigt; es genügt die Positionierung des Bördelwerkzeuges in der vorgesehenen Einbaulage im Grundgestell.A particular embodiment of the crimping device according to the invention provides the drives for the crimping jaws in the base frame laterally on the tool holder. At the corresponding point in the crimping tool there are crimping slides with crimping jaws, whereby the crimping jaws are displaceable into the working area of the crimping bed. Depending on the position of the slider in the crimping tool, the drive may be effected directly or via an inclined plane. For the provision of the crimping, corresponding return devices such as inclined planes, compression springs or the like are provided in the crimping tool. Due to this form of power transmission, no further coupling of the crimping slide with the crimping drives is required during assembly of the crimping tool; it is sufficient to position the crimping tool in the intended installation position in the base frame.

Eine weitere erfindungsgemäße Ausgestaltung des Bördelwerkzeuges sieht eine Grundplatte und eine Deckplatte vor, die beide mit Abstandshaltern an den Ecken den Werkzeugrahmen bilden. Zwischen Grund- und Deckplatte befinden sich die beweglichen Bördelschieber. In der Mitte weist die Grundplatte einen Durchbruch von mindestens der Größe des Bördelbettes auf. In diesem Durchbruch wird das Bördelbett während des Werkzeugwechsels und des Transportes fixiert, wobei das Bördelbett dann so gestaltet ist, daß es nicht nach unten über die Kontur der Grundplatte hinausragt.A further embodiment of the crimping tool according to the invention provides a base plate and a cover plate, both of which form the tool frame with spacers at the corners. Between the base and cover plate are the movable flare slides. In the middle, the base plate has a breakthrough of at least the size of the crimping bed. In this breakthrough, the hemming bed is fixed during the tool change and transport, with the hemming bed then being designed so that it does not protrude down beyond the contour of the base plate.

Sowohl die Deckplatte des Bördelwerkzeuges als auch die Oberseite des Grundgestelles weisen einen Durchbruch von mindestens der Größe des Werkstückes auf, durch die das Bördelwerkzeug von oben mit dem Werkstück beladen werden kann. Das Werkstück selbst wird im Bördelbett durch Niederhalter während des Bördelvorgangs festgehalten. Dabei können die Niederhalter im Bördelwerkzeug integriert oder auf der Oberseite des Grundgestelles angeordnet sein, oder die Funktion der Niederhalter kann komplett vom Roboterarm, der auch die Bördelvorrichtung mit dem Werkstück belädt, übernommen werden.Both the cover plate of the hemming tool and the top of the Base frame have a breakthrough of at least the size of the workpiece, through which the crimping tool can be loaded from above with the workpiece. The workpiece itself is held in the flanging bed by hold-down during the flanging process. In this case, the holding-down device can be integrated in the flanging tool or arranged on the upper side of the base frame, or the function of the hold-down device can be completely taken over by the robot arm, which also loads the flanging device with the workpiece.

Für die Wartung der Bördelbacken ist für das Bördelbett eine abgesenkte Position im Grundgestell vorgesehen. Dadurch kann das Bördelwerkzeug ohne das Bördelbett aus dem Grundgestell entfernt werden. Diese Stellung ist vorgesehen für kurzzeitige Wartungsarbeiten an den Bördelbacken und ermöglicht einen leichteren Zugang zu diesen.For the maintenance of the crimping jaws, a lowered position in the base frame is provided for the crimping bed. As a result, the crimping tool can be removed without the crimping bed from the base frame. This position is intended for short-term maintenance on the flared jaws and allows easier access to them.

Weitere die Erfindung vorteilhaft ausgestaltende Merkmale sind in den folgenden Figuren erläutert. Es zeigen:

Fig. 1
eine Ansicht einer erfindungsgemäßen Bördelvorrichtung;
Fig. 2
eine Ansicht eines Bördelantriebes mit Druckluftkissen;
Fig. 3
eine erfindungsgemäße Bördelvorrichtung mit Wechseltischen;
Fig. 4a
ein Bördelwerkzeug während des Bördelvorganges an den oberen Bördelbacken;
Fig. 4b
ein Bördelwerkzeug während des Versatzhubes;
Fig.4c
ein Bördelwerkzeug während des Bördelvorganges an den unteren Bördelbacken;
Fig. 5
einen Antrieb der Bördelbacken und
Fig. 6
ein Bördelwerkzeug in Wartungsposition.
Further features advantageously embodying the invention are explained in the following figures. Show it:
Fig. 1
a view of a crimping device according to the invention;
Fig. 2
a view of a flanging drive with compressed air cushion;
Fig. 3
a flanging device according to the invention with shuttle tables;
Fig. 4a
a crimping tool during the crimping operation on the upper flanging jaws;
Fig. 4b
a crimping tool during the offset stroke;
4c
a crimping tool during the crimping operation on the lower crimping jaws;
Fig. 5
a drive of the flanging jaws and
Fig. 6
a crimping tool in maintenance position.

In Fig. 1 ist eine erfindungsgemäße Bördelvorrichtung dargestellt, die sich aus den beiden wesentlichen Komponenten Grundgestell 1 und Bördelwerkzeug 2 zusammensetzt. Das Grundgestell 1 enthält nur karosserieteilunabhängige Standardelemente: Der Grundrahmen 3 als zentrales Element nimmt den mit Gleitplatten 4 geführten Bördelheber 5 für die Bördelbewegung auf. Eine Wartungsabsteckung 6 für den Bördelheber 5 ermöglicht die Festsetzung des Bördelhebers 5 bei Wartungsarbeiten. Die Bodenplatte 7 ist für die Befestigung der Bördelvorrichtung am Boden vorgesehen. Oben schließt das Grundgestell mit der Rahmendeckplatte 8 ab, in der auch die für das Bördelwerkzeug 2 notwendigen Spann- und Zentriereinheiten 9 angeordnet sind. Die Werkstücköffnung 10 in der Rahmendeckplatte 8 dient zum Beladen des Bördelwerkzeuges 2 mit dem Werkstück 11. Zwischen Grundrahmen 3 und Rahmendeckplatte 8 befindet sich die durchgehende Werkzeugaufnahme 12 für die Aufnahme des Bördelwerkzeuges 2 im Grundgestell 1.In Fig. 1 , a flanging device according to the invention is shown, which is composed of the two essential components of the base frame 1 and crimping tool 2. The base frame 1 contains only body part-independent standard elements: The base frame 3 as a central element takes on guided with sliding plates 4 Bördelheber 5 for the flanging. A maintenance stakeout 6 for the crimping jack 5 makes it possible to fix the crimping jack 5 during maintenance work. The bottom plate 7 is provided for the attachment of the crimping device on the ground. Above completes the base frame with the frame top plate 8, in which also necessary for the crimping tool 2 clamping and centering units 9 are arranged. The workpiece opening 10 in the frame cover plate 8 is used to load the hemming tool 2 with the workpiece 11. Between the base frame 3 and the frame cover plate 8 there is the continuous tool holder 12 for receiving the hemming tool 2 in the base frame 1.

Der Werkzeugrahmen des Bördelwerkzeuges 2 besteht aus einer Grundplatte 13, einer Deckplatte 14 und den Abstandshaltern 15, die an den vier Ecken des Werkzeugrahmens angeordnet sind. Die Ausrichtung und die Befestigung des Bördelwerkzeuges 2 im Grundgestell 1 erfolgt durch die Spann- und Zentriereinheiten 9. Zwischen Grundplatte 13 und Deckplatte 14 befinden sich die beweglichen Bördelschieber 16 mit den 45° Bördelbacken 17 zum Vorbördeln und den 90° Bördelbacken 18 zum Fertigbördeln. In der Mitte weist die Grundplatte 13 einen Durchbruch 19 von mindestens der Größe des Bördelbettes 20 auf. Das Bördelbett 20, das der Aufnahme des Werkstückes 11 dient, ist lose im Bördelwerkzeug 2 angeordnet und fest mit dem Bördelheber 5 verbunden. Beim Bördelvorgang wird es vom Bördelheber 5 geführt und auch kräftemäßig bewegt. Der Bördelantrieb 21, der auf den Bördelheber 5 wirkt, ist auf der Bodenplatte 7 des Grundgestelles 1 angeordnet.The tool frame of the crimping tool 2 consists of a base plate 13, a cover plate 14 and the spacers 15, which are arranged at the four corners of the tool frame. The alignment and attachment of the crimping tool 2 in the base frame 1 is carried out by the clamping and centering units 9. Between base plate 13 and cover plate 14 are the movable crimping slide 16 with the 45 ° crimping jaws 17 for prebending and the 90 ° crimping jaws 18 for finish crimping. In the middle, the base plate 13 has an opening 19 of at least the size of the flanging bed 20. The hemming bed 20, which serves to receive the workpiece 11, is loosely arranged in the hemming tool 2 and firmly connected to the hemming jack 5. When crimping, it is guided by the crimping jack 5 and also moved by force. The hemming drive 21, which acts on the hemming jack 5, is arranged on the bottom plate 7 of the base frame 1.

Für den Bördelantrieb ist eine elektro-pneumatische Antriebsvariante mit Spindelhubvorrichtung in Fig. 2 detailliert dargestellt. Der gesamte Aufbau des Bördelantriebes ist so modular, das er innerhalb des Grundgestelles 1 mit wenigen Handgriffen gewechselt werden kann. Dazu weist der Bördelantrieb eine Bördelantriebsgrundplatte 22 auf, die mit der Grundplatte 7 des Grundgestelles 1 verschraubt ist. Zwischen Bördelantriebsgrundplatte 22 und Arbeitshubgrundplatte 23 sind die Druckluftkissen 24 angeordnet, die den Arbeitshub für den Bördelvorgang ausführen durch Anheben der Arbeitsgrundplatte 23. Für die genaue Ausrichtung von Bördelantriebsgrundplatte 22 und Arbeitshubgrundplatte 23 ist eine zweifache Säulenführung 25 vorgesehen. Ein gleichmäßiger Abstand der beiden Platten im Ruhezustand wird durch die Abstandshalter 26 gewährleistet.For the hemming an electro-pneumatic drive variant with Spindelhubvorrichtung in Fig. 2 is shown in detail. The entire structure of the Bördelantriebes is so modular that it can be changed within the base frame 1 with a few simple steps. For this purpose, the hemming drive has a hemming drive base plate 22, which is screwed to the base plate 7 of the base frame 1. Between Bördelantriebsgrundplatte 22 and Arbeitshubgrundplatte 23, the compressed air cushion 24 are arranged to perform the working stroke for the flanging by lifting the work base plate 23. For the exact alignment of Bördelantriebsgrundplatte 22 and Arbeitshubgrundplatte 23 a double column guide 25 is provided. A uniform distance between the two plates at rest is ensured by the spacers 26.

Der Versatzhub zwischen den Bördelbacken wird ausgeführt durch die Spindelhubvorrichtung, die auf Arbeitshubgrundplatte 23 angeordnet ist. Der Elektromotor 27, das Getriebe 28 und die angetriebene Spindel 29 heben oder senken den Bördelheber 5' entsprechend dem gewünschten Versatzhub. Für die Dauer des Arbeitshubes, bei dem hohe Kräfte auftreten, wird die Spindel 29 durch einen Verriegelungsmechnismus entlastet. Dieser besteht aus zwei oder mehr auf der der Arbeitshubgrundplatte 23 verschiebbar angeordneten Abstandsklötzen 30, die durch die Positioniereinrichtungen 31 so unter dem Bördelheber 5' verschoben werden, das entweder der obere Absatz 32 oder der untere Absatz 33 den Bördelheber 5' lagern und dadurch die wesentlichen Kräfte des Arbeitshubes übertragen.The offset stroke between the crimping jaws is carried out by the spindle lifting device, which is arranged on Arbeitshubgrundplatte 23. The electric motor 27, the gear 28 and the driven spindle 29 raise or lower the crimping jack 5 'according to the desired offset stroke. For the duration of the working stroke, occur in the high forces, the spindle 29 is relieved by a Verriegelungsmechnismus. This consists of two or more on the Arbeitsshubgrundplatte 23 slidably arranged Abstandsklötzen 30 which are moved by the positioning means 31 so under the crimping jack 5 ', either the upper shoulder 32 or the lower shoulder 33 the crimping jack 5' store and thereby the essential Transferring forces of the working stroke.

Eine Ansicht der Bördelvorrichtung mit Wechseltischen 34 zeigt Fig. 3. Die Wechseltische 34 ermöglichen es, die Bördelwerkzeuge 2 nach rechts oder links aus dem Grundgestell 1 zu schieben. Während sich ein Bördelwerkzeug 2 noch im Grundgestell 1 befindet und die Bördelvorrichtung in Betrieb ist, wird das auf dem Wechseltisch 34 befindliche Bördelwerkzeug 2' gewartet, justiert oder für den Einsatz vorbereitet.A view of the flanging device with changing tables 34 is shown in FIG. 3 . The changing tables 34 make it possible to push the crimping tools 2 to the right or left from the base frame 1. While a hemming 2 is still in the base frame 1 and the crimping device is in operation, located on the shuttle table 34 flanging tool 2 'is maintained, adjusted or prepared for use.

Verschiedene Arbeitsstufen im Bördelwerkzeug 2 sind in den Fig. 4a - 4c dargestellt. Fig. 4a zeigt die Vorbördelung des Werkstückes 11. Das Bördelbett 20 befindet sich auf der Höhe der 45° Bördelbacken 17, die auf den Bördelschiebern 16 angeordnet sind. Durch die Auslösung des kleinen Bördelhubes wird die Vorbördelung des Werkstückes 11 bewirkt.Various stages in the crimping tool 2 are shown in Figs. 4a - 4c . 4a shows the Vorbördelung of the workpiece 11. The hemming bed 20 is located at the height of the 45 ° crimping jaws 17 which are arranged on the Bördelschiebern 16. By triggering the small Bördelhubes the Vorbördelung the workpiece 11 is effected.

Fig. 4b zeigt das Bördelwerkzeug 2 während des Versatzhubes. Die Bördelschieber 16 sind nach außen gefahren und damit sind alle Bördelbacken 17, 18 aus dem Arbeitsbereich des Bördelbettes 20 entfernt. Mittels der Spindelhubvorrichtung wird das Bördelbett 20 auf die Fertigbördelposition angehoben, wie in Fig. 4c gezeigt. Mittels der Bördelschieber 16 fahren die Bördelbacken wieder in den Arbeitsbereich des Bördelbettes 20. Beim Durchführen des Arbeitshubes wird das Werkstück 11 an den 90° Bördelbacken 18 fertiggebördelt.Fig. 4b shows the crimping tool 2 during the offset stroke. The crimping slide 16 have moved outward, and thus all the crimping jaws 17, 18 are removed from the working area of the crimping bed 20. By means of the Spindelhubvorrichtung the hemming bed 20 is raised to the Fertigbördelposition, as shown in Fig. 4c. By means of the crimping slide 16, the crimping jaws travel again into the working area of the crimping bed 20. When carrying out the working stroke, the workpiece 11 is finish crimped to the 90 ° crimping jaws 18.

Fig. 5 zeigt eine Draufsicht auf die Bördelschieber und deren Anordnung in einem erfindungsgemäßen Bördelwerkzeug 35. Die der Kontur des Werkstückes 11 folgenden Bördelbacken 36 sind in den Arbeitsbereich des Bördelbettes bewegbar, indem sie auf den Bördelschiebern 37, 38 befestigt sind. Die Antriebe 39 der Bördelbacken sind seitlich an der Werkzeugöffnung 12 des Grundgestelles 2 angeordnet und übertragen direkt eine Druckkraft auf das Bördelwerkzeug 35. Für die seitlich - bezogen auf die Werkzeugöffnung 12 - angeordneten Bördelschieber 37 kann diese Antriebskraft in eine direkte, geradlinige Bewegung in den Arbeitsbereich des Bördelbettes 20 umgesetzt werden. Um die Bördelbacken 36 wieder zurückzubewegen, ist ein Rückholmechanismus 40 vorgesehen, der mittels Druckfedern, Druckluftzylindern o. ä. die Rückführkraft aufbringt. 5 shows a top view of the crimping slides and their arrangement in a crimping tool 35 according to the invention. The crimping jaws 36 following the contour of the workpiece 11 are movable into the working area of the crimping bed by being mounted on the crimping slides 37, 38. The drives 39 of the crimping jaws are arranged laterally on the tool opening 12 of the base frame 2 and directly transmit a compressive force on the crimping tool 35. For the crimping shifter 37 arranged laterally relative to the tool opening 12, this driving force can be converted into a direct, rectilinear movement into the working area the crimping bed 20 are implemented. In order to move back the crimping jaws 36, a return mechanism 40 is provided which applies the return force by means of compression springs, compressed air cylinders or the like.

Die stirnseitig angeordneten Bördelschieber 38 weisen eine senkrecht zu den Antrieben 39 liegende Bewegungsrichtung auf. Deshalb wirken die Antriebe 39 zuerst auf Hilfsschieber 41, die über eine schiefe Ebene 42 die erforderliche Bewegung der Bördelschieber 38 in die Arbeitsbereich des Bördelbettes 20 erzeugen. Auch hier ist ein Rückholmechanismus 40 vorgesehen, um die Bördelschieber wieder zurückfahren zu können.The end face arranged flare 38 have a direction perpendicular to the drives 39 movement direction. Therefore, the actuators 39 first act on auxiliary slides 41, which generate the required movement of the crimping slide 38 into the working area of the crimping bed 20 via an inclined plane 42. Again, a return mechanism 40 is provided in order to drive back the crimping slide can again.

Fig. 6 zeigt, wie für kurzfristige Wartungsarbeiten am Bördelwerkzeug 2 das Bördelbett 20 in eine Wartungsposition 43 innerhalb des Grundgestelles 1 abgesenkt und dann das Bördelwerkzeug 2 ohne Bördelbett 20 auf den Wechseltisch 34 geschoben wird. Dadurch ist insbesondere der Zugang zu den Bördelbacken 17, 18 und Bördelschiebern 16 erleichtert und eine schnelle Wartung ist möglich. Wird das Bördelwerkzeug 2 wieder in das Grundgestell 1 verbracht, ist die Bördelvorrichtung umgehend einsatzbereit. FIG. 6 shows how, for short-term maintenance work on the hemming tool 2, the hemming bed 20 is lowered into a maintenance position 43 within the base frame 1 and then the hemming tool 2 is pushed onto the shuttle table 34 without a hemming bed 20. As a result, in particular access to the flanging jaws 17, 18 and flanged slides 16 is facilitated and rapid maintenance is possible. If the hemming tool 2 is returned to the base frame 1, the hemming device is immediately ready for use.

Claims (12)

  1. Flanging apparatus for metal sheets, in particular for body sheets in vehicle construction, comprising a support structure (1), a liftable and lowerable flanging bed (20), and flanging jaws (17, 18) which can be moved into the working region of the flanging bed, a flanging tool (2) having the essential components specific to the workpiece, in particular the flanging bed (20) and the flanging jaws (17, 18), and being arranged as an interchangeable unit in the support structure (1), and the support structure (1) having a tool receptacle (12) which is continuous as viewed in the horizontal direction and is of at least the size of the flanging tool (2), so that the flanging tool (2) can be pushed into the support structure (1) and out of it again from any desired side, characterized in that change tables (34) for accommodating flanging tools (2) are attached to the support structure (1) on one side or both sides of the tool receptacle (12).
  2. Flanging apparatus according to Claim 1, characterized in that the flanging drive (21) for the flanging bed is arranged in the support structure.
  3. Flanging apparatus according to Claim 2, characterized in that the flanging drive (21) for the flanging bed is an interchangeable unit which essentially comprises a drive base plate (22) fastened on the support structure, a movable flanging lifter (5') guided in the support structure and carrying the flanging bed (20), and a drive between drive base plate (22) and flanging lifter (5').
  4. Flanging apparatus according to Claim 2, characterized in that the drive for the offset stroke of the flanging bed (20) between the flanging jaws (17, 18) is effected by means of an electrically driven spindle-type lifting device, and the working stroke for the flanging operation is effected by means of one or more compressed-air cushions (24).
  5. Flanging apparatus according to Claim 4, characterized in that the flanging lifter (5') and the spindle-type lifting device are arranged on the compressed-air cushions (24).
  6. Flanging apparatus according to Claim 5, characterized in that the flanging lifter (5') is mounted on distance blocks (30) for the duration of the working stroke, the distance blocks (30) have steps (32, 33), corresponding to the offset stroke, for mounting the flanging lifter (5'), and the distance blocks (30) are displaceably mounted on a working-stroke base plate (25).
  7. Flanging apparatus according to Claim 1, characterized in that the drives for the flanging jaws are arranged in the support structure (1).
  8. Flanging apparatus according to Claim 7, characterized in that the drives (39) for the flanging jaws are arranged in the support structure (1) laterally at the tool receptacle (12) and transmit their force directly to the flanging slides (37) with the same direction of movement and indirectly via auxiliary slides (41) to the flanging slides (38) with different direction of movement, in each case with respect to the drive direction.
  9. Flanging apparatus according to Claim 1, characterized in that the flanging tool (2) has a base plate (13) and a cover plate (14), both of which, together with spacers (15) at the corners, form the tool frame and which accommodate in their intermediate spaces the movable flanging slides (16) having the flanging jaws (17, 18).
  10. Flanging apparatus according to Claim 1, characterized in that the base plate (13) has an aperture of at least the size of the flanging bed (20), and the cover plate (14) has a workpiece opening (10) of at least the size of a workpiece (11).
  11. Flanging apparatus according to Claim 1, characterized in that the flanging bed (20), for the tool change, is fixed in a position inside the flanging tool (2).
  12. Flanging apparatus according to Claim 1, characterized in that a lowered position (43) is provided for the flanging bed (20) in the support structure (1), as a result of which the flanging tool (2), without flanging bed (20), can be removed from the tool receptacle (12) for maintenance purposes.
EP03101031A 1999-11-25 1999-11-25 Hemming device Expired - Lifetime EP1402968B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE59914012T DE59914012D1 (en) 1999-11-25 1999-11-25 A hemming
EP06115742A EP1702692B1 (en) 1999-11-25 1999-11-25 Hemming device
ES03101031T ES2277029T3 (en) 1999-11-25 1999-11-25 EMBROIDERY DEVICE.
DE59914683T DE59914683D1 (en) 1999-11-25 1999-11-25 A hemming
EP03101031A EP1402968B1 (en) 1999-11-25 1999-11-25 Hemming device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03101031A EP1402968B1 (en) 1999-11-25 1999-11-25 Hemming device
EP99123455A EP1103320B1 (en) 1999-11-25 1999-11-25 Hemming device

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EP99123455A Division EP1103320B1 (en) 1999-11-25 1999-11-25 Hemming device
EP99123455.0 Division 1999-11-25

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06115742A Division EP1702692B1 (en) 1999-11-25 1999-11-25 Hemming device

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EP1402968A1 EP1402968A1 (en) 2004-03-31
EP1402968B1 true EP1402968B1 (en) 2006-11-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586352A (en) * 2013-11-25 2014-02-19 东风汽车公司 Mold structure facilitating switching production of top cover with skylight and top cover without skylight of automobile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004031290A1 (en) * 2004-06-29 2006-02-09 Adam Opel Ag Tilting system for a crimping device
CN102039346B (en) * 2010-10-20 2014-01-01 重庆理工大学 Opposite teeth extruding type fine-blanking die and fine-blanking method adopting same
CN102658334A (en) * 2012-05-30 2012-09-12 苏州旭创精密模具有限公司 Precision flanging die
CN105397381B (en) * 2016-01-08 2018-02-09 武汉法利莱切焊系统工程有限公司 A kind of laser scanning weld jig

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Publication number Priority date Publication date Assignee Title
FR2296519A1 (en) * 1974-12-30 1976-07-30 Chausson Usines Sa Working machine two-section transfer mechanism - has two coupled machine trucks travelling between working and loading stations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586352A (en) * 2013-11-25 2014-02-19 东风汽车公司 Mold structure facilitating switching production of top cover with skylight and top cover without skylight of automobile
CN103586352B (en) * 2013-11-25 2016-04-13 东风汽车公司 Be convenient to car band skylight top cover and switch the mould structure produced without skylight top cover

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