EP2295162A1 - Tool assembly for shaping the border of a tub on a metallic tub blank - Google Patents

Tool assembly for shaping the border of a tub on a metallic tub blank Download PDF

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Publication number
EP2295162A1
EP2295162A1 EP09011694A EP09011694A EP2295162A1 EP 2295162 A1 EP2295162 A1 EP 2295162A1 EP 09011694 A EP09011694 A EP 09011694A EP 09011694 A EP09011694 A EP 09011694A EP 2295162 A1 EP2295162 A1 EP 2295162A1
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EP
European Patent Office
Prior art keywords
frame
clamping plate
tool
arrangement according
embossing
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.)
Granted
Application number
EP09011694A
Other languages
German (de)
French (fr)
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EP2295162B1 (en
Inventor
Thomas Dahlhues
Stefan Dipl.-Ing. Horsthempke
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.)
Franz Kaldewei GmbH and Co KG
Original Assignee
Franz Kaldewei GmbH and Co KG
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 Franz Kaldewei GmbH and Co KG filed Critical Franz Kaldewei GmbH and Co KG
Priority to EP20090011694 priority Critical patent/EP2295162B1/en
Priority to ES09011694T priority patent/ES2444420T3/en
Priority to PT09011694T priority patent/PT2295162E/en
Publication of EP2295162A1 publication Critical patent/EP2295162A1/en
Application granted granted Critical
Publication of EP2295162B1 publication Critical patent/EP2295162B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • 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
    • B21D37/02—Die constructions enabling assembly of the die parts in different ways
    • 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
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like

Definitions

  • the invention relates to a tool assembly for forming a tub rim on a metallic tub blank.
  • a tub blank is made of a flat metal plate having a trough-shaped depression which forms the tub space of a bathtub or the footprint of a shower tray has.
  • the recess is surrounded on the upper side by a planar peripheral surface, which is formed in a subsequent forming step to a tub rim of the sanitary tub.
  • the edge of the flat surface is bent at right angles and is formed in the plane surface a predetermined mirror surface tilt.
  • Sanitary tubs are often manufactured in small series, which differ in terms of the outer dimension of the tub rim and / or in terms of the outer contour of the tub rim.
  • a large number of forming tools must be provided. This is complex, and leads to the fact that in practice sanitary tubs can be produced economically only with a few variations and dimensions of the tub edges.
  • the EP 1 946 687 A2 deals with a thermoforming of plastic trays and describes a suitable for the deep drawing of plastic trays variable pre-mold frame, which is composed of different and / or coordinated frame parts.
  • the mold frame is fixed on a drawing plate and replaces a conventional thermoforming mold.
  • a reshaped plastic plate is placed on the mold frame and freely formed by applying a vacuum on the underside. Over the mold frame protruding edges are bent at the outer periphery of the mold frame.
  • a window frame is used, which pulls the plastic plate over the mold frame and fixed on the drawing plate.
  • the known tool arrangement is not suitable for forming a metal plate.
  • the invention has for its object to provide a tool assembly for forming a tub rim on a metallic tub blank, which is variably mounted from standard parts, so that using the standard parts tub edges can be made with different outer dimensions and different shapes.
  • the invention and solution to this problem is a tool assembly according to claim 1.
  • the tool assembly according to the invention comprises a tool lower part having a first clamping plate, arranged on the first clamping plate Hochstellrahmen and an inserted into the Hochstellrahmen ejector, and a tool upper part, the second clamping plate , An arranged on the second clamping plate embossing frame and at least one attached to the second clamping plate hold-down.
  • the raising frame according to the invention consists of several parts of strips and elbows and edged by a clamping frame formed from clamping strips.
  • the embossing frame is composed of several parts of recupergerahmen instituten.
  • the hold-down is as a separate Functional element formed, which extends along a portion of the embossing frame and presses the tub blank against the end face of the raising frame. It goes without saying that as a rule a plurality of hold-downs are used whose number and positioning depends on the size of the tub blank and the outer shape of the tub rim. The hold-downs are used where large hold-down forces are required during the forming process. Preferably, a hold-down is arranged in each pan corner of the tub blank, in particular in each 90 ° corner.
  • the hold-downs are as well as the elements from which the raising frame and the clamping frame are formed, formed as standard parts and together with these a mounting element set, the parts of which can be combined arbitrarily and application-oriented.
  • the tool assembly is modular and designed for a single part and series production alike. In case of conversions the tool investment costs are low.
  • the hold-down device belonging to the tool arrangement according to the invention is expediently designed such that it encloses a corner of the embossing frame.
  • the hold-down device preferably has a foot element which can be fastened to the second clamping plate, a vertically movable pressure element, vertical guides for the pressure element and force elements for generating a hold-down force acting on the pressure element.
  • the force elements may consist of compression springs or hydraulic cylinder / piston assemblies.
  • the embossing frame elements are preferably formed as lattice-shaped elements having a stepped skirting board, an upper end bar and the skirting board with the end bar connecting cross bars.
  • the end webs of adjacent embossing frame elements can be connected to one another by plug connections.
  • the end webs are expediently formed with pins and corresponding pin receptacles.
  • An advantageous embodiment of the tool assembly according to the invention provides that the foot member of the blank holder the stepped skirting of the embossing frame elements covers and braces the procurgahmenimplantation with the second clamping plate.
  • the hold-down not only fulfills its hold-down function but also a clamping function for the embossing frame in the upper part of the tool.
  • the moldings and angle pieces forming the raising frame of the tool lower part are expediently connectable to one another by plug connections. They also have a step surface which cooperates with the clamping bars. The tensioning strips overlap the step surface of the strips and elbows forming the raising frames and clamp the raising frame with the first clamping plate.
  • Both the first clamping plate and the second clamping plate are preferably provided in the longitudinal and transverse directions with grooves for mounting the Hochstellrahmen or the embossing frame forming parts. At least part of the raising frame or the embossing frame forming elements are adjustable along the grooves. By adjusting movements, the connections between the parts can be made.
  • the first clamping plate is preferably formed as a perforated plate. Through the openings of the first clamping plate inserted in the Hochstellrahmen ejector plate is accessible on the underside and can be dug by ram or similar Auswerferieri from the raised frame.
  • the ejector plate forms an abutment for the tub rim.
  • the mirror surface slope of the tub rim can be formed.
  • the ejector plate expediently on projections for centering the tub blank.
  • Fig. 1 illustrated tool assembly is used to reshape a tub rim to a metallic tub blank 1 and includes a lower tool part 2 and a tool upper part 3 for use in a forming press, not shown.
  • the lower tool part 2 has a first clamping plate 4, a raised frame 5 arranged on the first clamping plate 4, and an ejector plate 6 inserted in the raised frame.
  • the first clamping plate 4 can be fastened on a further carrier 7 or on the press table of a forming press.
  • the upper tool part 3 has a second clamping plate 8, a stamping frame 9 arranged on the second clamping plate and at least one blank holder 10 fastened to the second clamping plate.
  • the second clamping plate 8 is held on a support structure 11 or the press ram of a forming press, not shown.
  • a metallic tub blank 1 is placed, which already has a trough-shaped depression and a flat metal surface 12 surrounding the recess.
  • the upper part of the tool 3 performs a vertical adjusting movement against the lower part of the tool 2, the embossing frame 9 of the upper part 3 of the tool dipping into the raising frame 5 of the lower part 2 of the mold.
  • This adjusting movement is in Fig. 4 shown.
  • Fig. 4 one takes also that the hold-10 acts against the end face of the raising frame 5 and in the Fig. 4 not shown tub blank against the end face of the raising frame 5 presses.
  • the Fig. 1 and 2 show the tub blank 1 after the forming of the tub rim 13th
  • the raising frame 5 is composed of several parts of strips 14 and angle pieces 15 and edged by a clamping frame 16 formed from clamping bars 17.
  • the assembly is in the Fig. 5a to 5e shown.
  • a comparative presentation of Fig. 5a and 5b one takes that, by displacement of strips and elbows along the grooves 18, the connectors can be made.
  • clamping strips 16 are used, which engage over a step surface 19 of the raising frame 5 forming strips 14 and angle pieces 15 and the raising frame 5 with the first clamping plate 4 brace ( Fig. 6 ).
  • the embossing frame 9 of the upper tool part 3 is composed of several parts of recuperatorn 20, which are formed as grid-shaped elements.
  • the representations in the Fig. 7a and 7b If one deduces that the embossing frame elements 20 has a stepped skirt 21, an upper end web 22 and the skirting board with the end web connecting cross bars 23.
  • the end webs 22 of adjacent embossing frame elements can be connected to one another by plug connections and have corresponding pins and corresponding pin receptacles for this purpose.
  • intermediate pieces 24 can also be inserted between the grid-shaped embossing frame elements 20, which can be connected by plug connections to the end webs 22 of the lattice-shaped embossing frame elements 20.
  • 24 stamping frame 9 different size can be formed from standard parts.
  • the second clamping plate 8 has longitudinally and transversely aligned grooves 18 'for mounting the embossing frame elements 20. From a comparative analysis of the Fig. 7b and 7c it becomes clear that embossing frame elements along the grooves 18 'can be moved and thereby the connectors are produced.
  • the hold-downs 10 each include a corner of the embossing frame 9 and have the in Fig. 9 shown construction. They have a foot element 25 which can be fastened to the second clamping plate 8, a vertically movable pressure element 26, vertical guides 27 for the pressure element 26 and force elements 28 for generating a hold-down force acting on the pressure element 26.
  • the force elements 28 are in the embodiment of hydraulic cylinder / piston assemblies. However, compression springs can also be used as force elements 28.
  • Fig. 9 clearly that the foot member 25 of the hold-down 10, the stepped skirt 21 of the embossing frame elements 20 covers and clamped the procurgahmenimplantation 20 with the second clamping plate 8.
  • Hochstellrahmen and embossing frame have been shown, which have a rectangular plan.
  • frame frame embossing frame having a deviating from the rectangular shape floor plan.
  • the tool assembly is therefore also suitable for forming tub edges on shower and bathtubs, the are intended for a corner installation and have a hexagonal floor plan or a floor plan with an arch, for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The tool arrangement comprises a tool lower portion (2), which has a clamping plate (4), a height positioning frame arranged on the clamping plate, and an ejector plate inserted inside the height positioning frame. A tool upper portion (3) is provided, which has another clamping plate (8), an embossing frame (9) arranged on the latter clamping plate, and a press pad (10) fastened at the latter clamping plate.

Description

Die Erfindung betrifft eine Werkzeuganordnung zum Umformen eines Wannenrandes an einem metallischen Wannenrohling.The invention relates to a tool assembly for forming a tub rim on a metallic tub blank.

Die Formgebung von Sanitärwannen erfolgt in mehreren Umformschritten. Zunächst wird aus einer ebenen Metallplatte ein Wannenrohling gefertigt, der eine muldenförmige Vertiefung, welche den Wannenraum einer Badewanne oder die Standfläche einer Duschwanne bildet, aufweist. Die Vertiefung ist oberseitig von einer planen Umfangsfläche umgeben, die in einem folgenden Umformschritt zu einem Wannenrand der Sanitärwanne umgeformt wird. Dazu wird der Rand der ebenen Fläche rechtwinklig umgebogen und wird in die plane Fläche eine vorgegebene Spiegelflächenneigung eingeformt.The design of sanitary tubs takes place in several forming steps. First, a tub blank is made of a flat metal plate having a trough-shaped depression which forms the tub space of a bathtub or the footprint of a shower tray has. The recess is surrounded on the upper side by a planar peripheral surface, which is formed in a subsequent forming step to a tub rim of the sanitary tub. For this purpose, the edge of the flat surface is bent at right angles and is formed in the plane surface a predetermined mirror surface tilt.

Sanitärwannen werden häufig in kleinen Serien gefertigt, die sich hinsichtlich der Außenabmessung des Wannenrandes und/oder hinsichtlich der äußeren Kontur des Wannenrandes unterscheiden. Für die Umformung unterschiedlich großer sowie unterschiedlich ausgebildeter Wannenränder müssen eine Vielzahl von Umformwerkzeugen bereitgestellt werden. Dies ist aufwändig, und führt dazu, dass in der Praxis Sanitärwannen nur mit wenigen Variationen und Abmessungen der Wannenränder wirtschaftlich herstellbar sind.Sanitary tubs are often manufactured in small series, which differ in terms of the outer dimension of the tub rim and / or in terms of the outer contour of the tub rim. For the conversion of differently sized and differently designed tub edges, a large number of forming tools must be provided. This is complex, and leads to the fact that in practice sanitary tubs can be produced economically only with a few variations and dimensions of the tub edges.

Die EP 1 946 687 A2 befasst sich mit einem Tiefziehen von Kunststoffwannen und beschreibt einen für das Tiefziehen von Kunststoffwannen geeigneten variabel vormontierbaren Formrahmen, der aus verschiedenen und/oder aufeinander abgestimmten Rahmenteilen aufgebaut ist. Der Formrahmen wird auf einer Ziehplatte fixiert und ersetzt eine übliche Tiefziehform. Eine umzuformende Kunststoffplatte wird auf den Formrahmen aufgelegt und durch unterseitiges Anlegen eines Vakuums frei geformt. Über den Formrahmen überstehende Ränder werden am äußeren Umfang des Formrahmens umgebogen. Für die Umformung des Wannenrandes wird ein Fensterrahmen verwendet, der die Kunststoffplatte über den Formrahmen zieht und auf der Ziehplatte fixiert. Ebenso wie der Formrahmen kann auch der Fensterrahmen aus Standardteilen variabel zusammengesetzt werden. Zur Umformung einer Metallplatte ist die bekannte Werkzeuganordnung jedoch nicht geeignet. Bei der Umformung einer Metallplatte, die eine wesentlich höhere Biegefestigkeit als eine tiefziehfähige Kunststoffplatte aufweist, kann insbesondere nicht sichergestellt werden, dass die umzuformende Platte während des Umformprozesses fest und definiert auf dem Umformrahmen aufliegt. Vor allem in den kritischen Eckbereichen, in denen die umzuformende Platte einer starken Reckung unterworfen ist, ist damit zu rechnen, dass durch Materialverwerfungen und Materialverzug das Umformergebnis unbefriedigend ist.The EP 1 946 687 A2 deals with a thermoforming of plastic trays and describes a suitable for the deep drawing of plastic trays variable pre-mold frame, which is composed of different and / or coordinated frame parts. The mold frame is fixed on a drawing plate and replaces a conventional thermoforming mold. A reshaped plastic plate is placed on the mold frame and freely formed by applying a vacuum on the underside. Over the mold frame protruding edges are bent at the outer periphery of the mold frame. For the reshaping of the tub rim, a window frame is used, which pulls the plastic plate over the mold frame and fixed on the drawing plate. As well as the mold frame and the window frame can be composed of standard parts variable. However, the known tool arrangement is not suitable for forming a metal plate. When forming a metal plate, which has a much higher flexural strength than a thermoformable plastic plate, it can not be ensured in particular that the plate to be formed rests firmly and defined on the forming frame during the forming process. Especially in the critical corner areas in which the plate to be formed is subjected to a strong stretching, it is to be expected that the deformation result is unsatisfactory due to material distortion and material distortion.

Der Erfindung liegt die Aufgabe zugrunde, eine Werkzeuganordnung zum Umformen eines Wannenrandes an einem metallischen Wannenrohling anzugeben, die aus standardmäßigen Teilen variabel montierbar ist, so dass unter Verwendung der Standardteile Wannenränder mit unterschiedlichen Außenabmessungen und unterschiedlichen Formen gefertigt werden können.The invention has for its object to provide a tool assembly for forming a tub rim on a metallic tub blank, which is variably mounted from standard parts, so that using the standard parts tub edges can be made with different outer dimensions and different shapes.

Gegenstand der Erfindung und Lösung dieser Aufgabe ist eine Werkzeuganordnung nach Anspruch 1. Die erfindungsgemäße Werkzeuganordnung umfasst ein Werkzeugunterteil, das eine erste Spannplatte, einen auf der ersten Spannplatte angeordneten Hochstellrahmen sowie eine in den Hochstellrahmen eingelegte Auswerferplatte aufweist, sowie ein Werkzeugoberteil, das eine zweite Spannplatte, einen auf der zweiten Spannplatte angeordneten Prägerahmen sowie mindestens einen an der zweiten Spannplatte befestigten Niederhalter aufweist. Der Hochstellrahmen ist erfindungsgemäß mehrteilig aus Leisten und Winkelstücken zusammengesetzt und von einem aus Spannleisten gebildeten Spannrahmen eingefasst. Der Prägerahmen ist mehrteilig aus Prägerahmenelementen zusammengesetzt. Der Niederhalter ist als separates Funktionselement ausgebildet, das sich entlang eines Abschnittes des Prägerahmens erstreckt und den Wannenrohling gegen die Stirnfläche des Hochstellrahmens drückt. Es versteht sich, dass im Regelfall eine Mehrzahl von Niederhaltern verwendet werden, deren Anzahl und Positionierung abhängig ist, von der Größe des Wannenrohlings sowie der Außenform des Wannenrandes. Die Niederhalter werden dort eingesetzt, wo große Niederhalterkräfte während des Umformprozesses erforderlich sind. Vorzugsweise wird in jeder Wannenecke des Wannenrohlings, insbesondere in jeder 90°-Ecke, ein Niederhalter angeordnet. Die Niederhalter sind ebenso wie die Elemente, aus denen der Hochstellrahmen sowie der Spannrahmen gebildet werden, als Standardteile ausgebildet und bilden zusammen mit diesen einen Montageelementensatz, dessen Teile beliebig und anwendungsorientiert kombiniert werden können. Die Werkzeuganordnung ist modular aufgebaut und für eine Einzelteil- und Serienproduktion gleichermaßen ausgelegt. Bei Umrüstungen sind die Werkzeuginvestkosten gering.The invention and solution to this problem is a tool assembly according to claim 1. The tool assembly according to the invention comprises a tool lower part having a first clamping plate, arranged on the first clamping plate Hochstellrahmen and an inserted into the Hochstellrahmen ejector, and a tool upper part, the second clamping plate , An arranged on the second clamping plate embossing frame and at least one attached to the second clamping plate hold-down. The raising frame according to the invention consists of several parts of strips and elbows and edged by a clamping frame formed from clamping strips. The embossing frame is composed of several parts of Prägerahmenelementen. The hold-down is as a separate Functional element formed, which extends along a portion of the embossing frame and presses the tub blank against the end face of the raising frame. It goes without saying that as a rule a plurality of hold-downs are used whose number and positioning depends on the size of the tub blank and the outer shape of the tub rim. The hold-downs are used where large hold-down forces are required during the forming process. Preferably, a hold-down is arranged in each pan corner of the tub blank, in particular in each 90 ° corner. The hold-downs are as well as the elements from which the raising frame and the clamping frame are formed, formed as standard parts and together with these a mounting element set, the parts of which can be combined arbitrarily and application-oriented. The tool assembly is modular and designed for a single part and series production alike. In case of conversions the tool investment costs are low.

Der zur erfindungsgemäßen Werkzeuganordnung gehörende Niederhalter ist zweckmäßig so ausgebildet, dass er eine Ecke des Prägerahmens einfasst. Vorzugsweise weist der Niederhalter ein an der zweiten Spannplatte befestigbares Fußelement, ein vertikal bewegliches Andruckelement, Vertikalführungen für das Andruckelement sowie Kraftelemente zur Erzeugung einer auf das Andruckelement wirkenden Niederhaltekraft auf. Die Kraftelemente können aus Druckfedern oder hydraulischen Zylinder-/Kolbenanordnungen bestehen.The hold-down device belonging to the tool arrangement according to the invention is expediently designed such that it encloses a corner of the embossing frame. The hold-down device preferably has a foot element which can be fastened to the second clamping plate, a vertically movable pressure element, vertical guides for the pressure element and force elements for generating a hold-down force acting on the pressure element. The force elements may consist of compression springs or hydraulic cylinder / piston assemblies.

Die Prägerahmenelemente sind vorzugsweise als gitterförmige Elemente ausgebildet, die eine gestufte Fußleiste, einen oberen Abschlusssteg und die Fußleiste mit dem Abschlusssteg verbindende Querstäbe aufweist. Die Abschlussstege benachbarter Prägerahmenelemente sind durch Steckverbindungen miteinander verbindbar. Zu diesem Zweck sind die Abschlussstege zweckmäßig mit Zapfen und korrespondierenden Zapfenaufnahmen ausgebildet. Zwischen den gitterförmigen Prägerahmenelementen sind auch Zwischenstücke einfügbar, die durch Steckverbindungen an die Abschlussstege der gitterförmigen Prägerahmenelemente angeschlossen sind.The embossing frame elements are preferably formed as lattice-shaped elements having a stepped skirting board, an upper end bar and the skirting board with the end bar connecting cross bars. The end webs of adjacent embossing frame elements can be connected to one another by plug connections. For this purpose, the end webs are expediently formed with pins and corresponding pin receptacles. Between The grid-shaped embossing frame elements and intermediate pieces are inserted, which are connected by plug-in connections to the end webs of the lattice-shaped embossing frame elements.

Eine vorteilhafte Ausführung der erfindungsgemäßen Werkzeuganordnung sieht vor, dass das Fußelement des Niederhalters die gestufte Fußleiste der Prägerahmenelemente überfasst und die Prägerahmenelemente mit der zweiten Spannplatte verspannt. Insofern erfüllt der Niederhalter nicht nur seine Niederhalterfunktion sondern ebenso eine Spannfunktion für den Prägerahmen im Werkzeugoberteil.An advantageous embodiment of the tool assembly according to the invention provides that the foot member of the blank holder the stepped skirting of the embossing frame elements covers and braces the Prägahmenelemente with the second clamping plate. In this respect, the hold-down not only fulfills its hold-down function but also a clamping function for the embossing frame in the upper part of the tool.

Die den Hochstellrahmen des Werkzeugunterteils bildenden Leisten und Winkelstücke sind zweckmäßig durch Steckverbindungen miteinander verbindbar. Sie weisen ferner eine Stufenfläche auf, die mit den Spannleisten zusammenwirkt. Die Spannleisten übergreifen die Stufenfläche der den Hochstellrahmen bildenden Leisten und Winkelstücke und verspannen den Hochstellrahmen mit der ersten Spannplatte.The moldings and angle pieces forming the raising frame of the tool lower part are expediently connectable to one another by plug connections. They also have a step surface which cooperates with the clamping bars. The tensioning strips overlap the step surface of the strips and elbows forming the raising frames and clamp the raising frame with the first clamping plate.

Sowohl die erste Spannplatte als auch die zweite Spannplatte sind vorzugsweise in Längs- und Querrichtung mit Nuten zur Montage der den Hochstellrahmen bzw. den Prägerahmen bildenden Teile versehen. Zumindest ein Teil der den Hochstellrahmen bzw. den Prägerahmen bildenden Elemente sind entlang der Nuten verstellbar. Durch Stellbewegungen können die Steckverbindungen zwischen den Teilen hergestellt werden.Both the first clamping plate and the second clamping plate are preferably provided in the longitudinal and transverse directions with grooves for mounting the Hochstellrahmen or the embossing frame forming parts. At least part of the raising frame or the embossing frame forming elements are adjustable along the grooves. By adjusting movements, the connections between the parts can be made.

Die erste Spannplatte ist vorzugsweise als Lochplatte ausgebildet. Durch die Öffnungen der ersten Spannplatte ist die in den Hochstellrahmen eingelegte Auswerferplatte unterseitig zugänglich und kann durch Stößel oder ähnliche Auswerferelemente aus dem Hochstellrahmen ausgehoben werden.The first clamping plate is preferably formed as a perforated plate. Through the openings of the first clamping plate inserted in the Hochstellrahmen ejector plate is accessible on the underside and can be dug by ram or similar Auswerferelemente from the raised frame.

Die Auswerferplatte bildet ein Widerlager für den Wannenrand. Durch eine oberseitige Formgebung der Auswerferplatte kann die Spiegelflächenneigung des Wannenrandes geformt werden. Zusätzlich weist die Auswerferplatte zweckmäßig Vorsprünge zur Zentrierung des Wannenrohlings auf.The ejector plate forms an abutment for the tub rim. By an upper-side shaping of the ejector, the mirror surface slope of the tub rim can be formed. In addition, the ejector plate expediently on projections for centering the tub blank.

Im Folgenden wird die Erfindung anhand eines Ausführungsbeispieles erläutert. Es zeigen schematisch:

Fig. 1
eine Explosionsdarstellung einer Werkzeuganordnung be- stehend aus einem Werkzeugunterteil und einem Werk- zeugoberteil,
Fig. 2
eine perspektivische Darstellung des Werkzeugunterteils,
Fig. 3
eine perspektivische Darstellung des Werkzeugoberteils,
Fig. 4
einen Schnitt durch die in Fig. 1 dargestellte Werkzeug- anordnung,
Fig. 5a bis 5e
Montageschritte beim Aufbau des Werkzeugunterteils,
Fig. 6
eine Detaildarstellung des Werkzeugunterteils,
Fig. 7a bis 7e
Montageschritte beim Aufbau des Werkzeugoberteils,
Fig. 8
das Werkzeugoberteil zur Umformung eines Wannen- randes, der andere Abmessungen aufweist,
Fig. 9
einen Niederhalter des Werkzeugoberteils.
In the following the invention will be explained with reference to an embodiment. They show schematically:
Fig. 1
an exploded view of a tool arrangement consisting of a tool lower part and a tool upper part,
Fig. 2
a perspective view of the tool lower part,
Fig. 3
a perspective view of the tool shell,
Fig. 4
a section through the in Fig. 1 illustrated tool arrangement,
Fig. 5a to 5e
Assembly steps in the construction of the tool lower part,
Fig. 6
a detailed representation of the tool lower part,
Fig. 7a to 7e
Assembly steps in the construction of the tool shell,
Fig. 8
the upper part of the tool for reshaping a tub edge, which has other dimensions,
Fig. 9
a hold-down of the tool shell.

Die in Fig. 1 dargestellte Werkzeuganordnung dient zum Umformen eines Wannenrandes an einem metallischen Wannenrohling 1 und umfasst ein Werkzeugunterteil 2 sowie ein Werkzeugoberteil 3 zur Verwendung in einer nicht dargestellten Umformpresse. Das Werkzeugunterteil 2 weist eine erste Spannplatte 4, einen auf der ersten Spannplatte 4 angeordneten Hochstellrahmen 5 sowie eine in den Hochstellrahmen eingelegte Auswerferplatte 6 auf. Die erste Spannplatte 4 ist auf einem weiteren Träger 7 oder auf dem Pressentisch einer Umformpresse befestigbar. Das Werkzeugoberteil 3 weist eine zweite Spannplatte 8, einen auf der zweiten Spannplatte angeordneten Prägerahmen 9 sowie mindestens einen an der zweiten Spannplatte befestigten Niederhalter 10 auf. Die zweite Spannplatte 8 ist auf einer Trägerkonstruktion 11 oder dem Pressenstempel einer nicht dargestellten Umformpresse gehalten.In the Fig. 1 illustrated tool assembly is used to reshape a tub rim to a metallic tub blank 1 and includes a lower tool part 2 and a tool upper part 3 for use in a forming press, not shown. The lower tool part 2 has a first clamping plate 4, a raised frame 5 arranged on the first clamping plate 4, and an ejector plate 6 inserted in the raised frame. The first clamping plate 4 can be fastened on a further carrier 7 or on the press table of a forming press. The upper tool part 3 has a second clamping plate 8, a stamping frame 9 arranged on the second clamping plate and at least one blank holder 10 fastened to the second clamping plate. The second clamping plate 8 is held on a support structure 11 or the press ram of a forming press, not shown.

Auf das Werkzeugunterteil 2 wird ein metallischer Wannenrohling 1 aufgelegt, der bereits eine wannenförmige Vertiefung sowie eine die Vertiefung umgebende ebene Metallfläche 12 aufweist. Zur Umformung des Wannenrandes führt das Werkzeugoberteil 3 eine vertikale Stellbewegung gegen das Werkzeugunterteil 2 aus, wobei der Prägerahmen 9 des Werkzeugoberteils 3 in den Hochstellrahmen 5 des Werkzeugunterteils 2 eintaucht. Diese Stellbewegung ist in Fig. 4 dargestellt. Fig. 4 entnimmt man auch, dass der Niederhalter 10 gegen die Stirnfläche des Hochstellrahmens 5 wirkt und den in der Fig. 4 nicht dargestellten Wannenrohling gegen die Stirnfläche des Hochstellrahmens 5 drückt. Die Fig. 1 und 2 zeigen den Wannenrohling 1 nach der Umformung des Wannenrandes 13.On the lower tool part 2, a metallic tub blank 1 is placed, which already has a trough-shaped depression and a flat metal surface 12 surrounding the recess. To reshape the rim of the bath, the upper part of the tool 3 performs a vertical adjusting movement against the lower part of the tool 2, the embossing frame 9 of the upper part 3 of the tool dipping into the raising frame 5 of the lower part 2 of the mold. This adjusting movement is in Fig. 4 shown. Fig. 4 one takes also that the hold-10 acts against the end face of the raising frame 5 and in the Fig. 4 not shown tub blank against the end face of the raising frame 5 presses. The Fig. 1 and 2 show the tub blank 1 after the forming of the tub rim 13th

Der Hochstellrahmen 5 ist mehrteilig aus Leisten 14 und Winkelstücken 15 zusammengesetzt und von einem aus Spannleisten 16 gebildeten Spannrahmen 17 eingefasst. Die Montage ist in den Fig. 5a bis 5e dargestellt. Den Darstellungen entnimmt man, dass die den Hochstellrahmen 5 des Werkzeugunterteils 2 bildenden Leisten 14 und Winkelstücke 15 durch Steckverbindungen miteinander verbindbar sind und dass die erste Spannplatte 4 in Längs- und in Querrichtung mit Nuten 18 für die Montage der den Hochstellrahmen 5 bildenden Teile versehen ist. Einer vergleichenden Darstellung der Fig. 5a und 5b entnimmt man, dass durch Verschiebung von Leisten und Winkelstücken entlang den Nuten 18 die Steckverbindungen hergestellt werden können. Zur Fixierung des Hochstellrahmens 5 werden Spannleisten 16 verwendet, die eine Stufenfläche 19 der den Hochstellrahmen 5 bildenden Leisten 14 und Winkelstücke 15 übergreifen und den Hochstellrahmen 5 mit der ersten Spannplatte 4 verspannen (Fig. 6). Einer vergleichenden Betrachtung der Fig. 5c und 5d entnimmt man, dass die Spannleisten 16 ebenfalls durch Steckverbindungen rahmenförmig verbunden werden, wobei durch Verschiebung der Spannleisten 16 relativ zueinander unterschiedlich große Spannrahmen 17 montiert werden können.The raising frame 5 is composed of several parts of strips 14 and angle pieces 15 and edged by a clamping frame 16 formed from clamping bars 17. The assembly is in the Fig. 5a to 5e shown. The representations one takes that the raising frame 5 of the lower tool part 2 forming strips 14 and angle pieces 15 by plug connections can be connected to each other and that the first clamping plate 4 is provided in the longitudinal and transverse directions with grooves 18 for the assembly of the raising frame 5 forming parts. A comparative presentation of Fig. 5a and 5b one takes that, by displacement of strips and elbows along the grooves 18, the connectors can be made. For fixing the raising frame 5 clamping strips 16 are used, which engage over a step surface 19 of the raising frame 5 forming strips 14 and angle pieces 15 and the raising frame 5 with the first clamping plate 4 brace ( Fig. 6 ). A comparative consideration of Fig. 5c and 5d one takes that the clamping bars 16 are also connected frame-shaped by connectors, which can be mounted by moving the clamping bars 16 relative to each other different sized clamping frame 17.

Der Prägerahmen 9 des Werkzeugoberteils 3 ist mehrteilig aus Prägerahmenelementen 20 zusammengesetzt, die als gitterförmige Elemente ausgebildet sind. Den Darstellungen in den Fig. 7a und 7b entnimmt man, dass die Prägerahmenelemente 20 eine gestufte Fußleiste 21, einen oberen Abschlusssteg 22 und die Fußleiste mit dem Abschlusssteg verbindende Querstäbe 23 aufweist. Die Abschlussstege 22 benachbarter Prägerahmenelemente sind durch Steckverbindungen miteinander verbindbar und weisen zu diesem Zweck entsprechende Zapfen und korrespondierende Zapfenaufnahmen auf. Der Darstellung in Fig. 7b entnimmt man ferner, dass zwischen den gitterförmigen Prägerahmenelementen 20 auch Zwischenstücke 24 eingefügt sein können, welche durch Steckverbindungen an die Abschlussstege 22 der gitterförmigen Prägerahmenelemente 20 anschließbar sind. Durch Verwendung der beschriebenen Teile 20, 24 können Prägerahmen 9 unterschiedlicher Größe aus Standardteilen gebildet werden. Die zweite Spannplatte 8 weist in Längs- und Querrichtung ausgerichtete Nuten 18' zur Montage der Prägerahmenelemente 20 auf. Aus einer vergleichenden Betrachtung der Fig. 7b und 7c wird deutlich, dass Prägerahmenelemente entlang den Nuten 18' verschoben werden können und dadurch die Steckverbindungen herstellbar sind.The embossing frame 9 of the upper tool part 3 is composed of several parts of Prägerahmenelementen 20, which are formed as grid-shaped elements. The representations in the Fig. 7a and 7b If one deduces that the embossing frame elements 20 has a stepped skirt 21, an upper end web 22 and the skirting board with the end web connecting cross bars 23. The end webs 22 of adjacent embossing frame elements can be connected to one another by plug connections and have corresponding pins and corresponding pin receptacles for this purpose. The representation in Fig. 7b If one also deduces that intermediate pieces 24 can also be inserted between the grid-shaped embossing frame elements 20, which can be connected by plug connections to the end webs 22 of the lattice-shaped embossing frame elements 20. By using the described parts 20, 24 stamping frame 9 different size can be formed from standard parts. The second clamping plate 8 has longitudinally and transversely aligned grooves 18 'for mounting the embossing frame elements 20. From a comparative analysis of the Fig. 7b and 7c it becomes clear that embossing frame elements along the grooves 18 'can be moved and thereby the connectors are produced.

Nach dem Aufbau des Prägerahmens 9 werden in den Eckbereichen des Prägerahmens Niederhalter 10 montiert, die als separate Funktionselemente ausgebildet sind und sich jeweils entlang eines Abschnittes des Prägerahmens 9 erstrecken. Einer vergleichenden Betrachtung der Fig. 3, 7e und 8 entnimmt man, dass die Niederhalter 10 den Prägerahmen 9 vollständig umschließen können (Fig. 7e) oder zwischen den Niederhaltern 10 freie Bereiche verbleiben, wie dies in Fig. 8 dargestellt ist.After the structure of the embossing frame 9 down device 10 are mounted in the corner regions of the embossing frame, which are formed as separate functional elements and each extending along a portion of the embossing frame 9. A comparative consideration of Fig. 3 . 7e and 8 If one deduces that the hold-down device 10 can completely enclose the embossing frame 9 ( Fig. 7e ) or 10 free spaces remain between the holdings, as shown in Fig. 8 is shown.

Die Niederhalter 10 fassen jeweils eine Ecke des Prägerahmens 9 ein und haben den in Fig. 9 gezeigten Aufbau. Sie weisen ein an der zweiten Spannplatte 8 befestigbares Fußelement 25, ein vertikal bewegliches Andruckelement 26, Vertikalführungen 27 für das Andruckelement 26 sowie Kraftelemente 28 zur Erzeugung einer auf das Andruckelement 26 wirkenden Niederhaltekraft auf. Die Kraftelemente 28 bestehen im Ausführungsbeispiel aus hydraulischen Zylinder-/Kolbenanordnungen. Jedoch sind auch Druckfedern als Kraftelemente 28 einsetzbar. Des Weiteren wird aus Fig. 9 deutlich, dass das Fußelement 25 der Niederhalter 10 die gestufte Fußleiste 21 der Prägerahmenelemente 20 überfasst und die Prägerahmenelemente 20 mit der zweiten Spannplatte 8 verspannt.The hold-downs 10 each include a corner of the embossing frame 9 and have the in Fig. 9 shown construction. They have a foot element 25 which can be fastened to the second clamping plate 8, a vertically movable pressure element 26, vertical guides 27 for the pressure element 26 and force elements 28 for generating a hold-down force acting on the pressure element 26. The force elements 28 are in the embodiment of hydraulic cylinder / piston assemblies. However, compression springs can also be used as force elements 28. Furthermore it will off Fig. 9 clearly that the foot member 25 of the hold-down 10, the stepped skirt 21 of the embossing frame elements 20 covers and clamped the Prägahmenelemente 20 with the second clamping plate 8.

In den Ausführungsbeispielen sind Hochstellrahmen und Prägerahmen dargestellt worden, die einen rechteckförmigen Grundriss aufweisen. Durch entsprechend geformte Teile können jedoch ohne weiteres auch Hochstellrahmen und Prägerahmen gebildet werden, die einen von der Rechteckform abweichenden Grundriss aufweisen. Die Werkzeuganordnung ist daher auch zum Umformen von Wannenrändern an Dusch- und Badewannen geeignet, die für einen Übereckeinbau bestimmt sind und einen beispielsweise sechseckförmigen Grundriss oder einen Grundriss mit einem Bogen aufweisen.In the embodiments Hochstellrahmen and embossing frame have been shown, which have a rectangular plan. By appropriately shaped parts but can also be readily formed and frame frame embossing frame having a deviating from the rectangular shape floor plan. The tool assembly is therefore also suitable for forming tub edges on shower and bathtubs, the are intended for a corner installation and have a hexagonal floor plan or a floor plan with an arch, for example.

Claims (11)

Werkzeuganordnung zum Umformen eines Wannenrandes an einem metallischen Wannenrohling, mit - einem Werkzeugunterteil (2), das eine erste Spannplatte (4), einen auf der ersten Spannplatte (4) angeordneten Hochstellrahmen (5) sowie eine in den Hochstellrahmen (5) eingelegte Auswerferplatte (6) aufweist, und - einem Werkzeugoberteil (3), das eine zweite Spannplatte (8), einen auf der zweiten Spannplatte (8) angeordneten Prägerahmen (9) sowie mindestens einen an der zweiten Spannplatte (8) befestigten Niederhalter (10) aufweist, wobei der Hochstellrahmen (5) mehrteilig aus Leisten (14) und Winkelstücken (15) zusammengesetzt und von einem aus Spannleisten (16) gebildeten Spannrahmen (17) eingefasst ist, wobei der Prägerahmen (9) mehrteilig aus Prägerahmenelementen (20) zusammengesetzt ist und wobei der Niederhalter (10) als separates Funktionselement ausgebildet ist, das sich entlang eines Abschnittes des Prägerahmens (9) erstreckt und den Wannenrohling (1) gegen die Stirnfläche des Hochstellrahmens (5) drückt.Tool arrangement for forming a tub rim on a metallic tub blank, with - A tool lower part (2) having a first clamping plate (4), one on the first clamping plate (4) arranged upright frame (5) and in the Hochstellrahmen (5) inserted ejector plate (6), and - An upper tool (3) having a second clamping plate (8), one on the second clamping plate (8) arranged embossing frame (9) and at least one on the second clamping plate (8) fixed down device (10), wherein the raising frame (5) consists of several parts of strips (14) and elbows (15) and framed by a clamping strips (16) formed clamping frame (17), wherein the embossing frame (9) consists of several parts of Prahmenahmenelementen (20) and wherein the hold-down device (10) is designed as a separate functional element which extends along a section of the embossing frame (9) and presses the trough blank (1) against the end face of the push-up frame (5). Werkzeuganordnung nach Anspruch 1, dadurch gekennzeichnet, dass der Niederhalter (10) eine Ecke des Prägerahmens (9) einfasst.Tool arrangement according to claim 1, characterized in that the hold-down device (10) encloses a corner of the embossing frame (9). Werkzeuganordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Niederhalter (10) ein an der zweiten Spannplatte (8) befestigbares Fußelement (25), ein vertikal bewegliches Andruckelement (26), Vertikalführungen (27) für das Andruckelement (26) und Kraftelemente (28) zur Erzeugung einer auf das Andruckelement (26) wirkenden Niederhaltekraft aufweist.Tool arrangement according to claim 1 or 2, characterized in that the hold-down device (10) on the second clamping plate (8) attachable foot member (25), a vertically movable pressure element (26), vertical guides (27) for the pressure element (26) and force elements (28) for generating a force acting on the pressure element (26) hold-down force. Werkzeuganordnung nach Anspruch 3, dadurch gekennzeichnet, dass die Kraftelemente (28) aus Druckfedern oder hydraulischen Zylinder-/Kolbenanordnungen bestehen.Tool arrangement according to claim 3, characterized in that the force elements (28) consist of compression springs or hydraulic cylinder / piston arrangements. Werkzeuganordnungen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Prägerahmenelemente (20) als gitterförmige Elemente ausgebildet sind, die eine gestufte Fußleiste (21), einen oberen Abschlusssteg (22) und die Fußleiste (21) mit dem Abschlusssteg (22) verbindende Querstäbe (23) aufweist, wobei die Abschlussstege (22) benachbarter Prägerahmenelemente durch Steckverbindungen miteinander verbindbar sind.Tool arrangements according to one of claims 1 to 4, characterized in that the embossing frame elements (20) are formed as lattice-shaped elements having a stepped baseboard (21), an upper end web (22) and the baseboard (21) with the end web (22). having connecting cross bars (23), wherein the end webs (22) of adjacent Prägerahmenelemente are connected by plug connections with each other. Werkzeuganordnung nach Anspruch 5, dadurch gekennzeichnet, dass zwischen den gitterförmigen Prägerahmenelementen (20) Zwischenstücke (24) eingefügt sind, welche durch Steckverbindungen an die oberen Abschlussstege (22) der gitterförmigen Prägerahmenelemente (20) angeschlossen sind.Tool arrangement according to claim 5, characterized in that intermediate pieces (24) are inserted between the grid-shaped embossing frame elements (20) which are connected by plug connections to the upper end webs (22) of the grid-shaped embossing frame elements (20). Werkzeuganordnung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das Fußelement (25) des Niederhalters (10) die gestufte Fußleiste (21) der Prägerahmenelemente (20) überfasst und die Prägerahmenelemente (20) mit der zweiten Spannplatte (18) verspannt.Tool arrangement according to claim 5 or 6, characterized in that the foot member (25) of the blank holder (10) the stepped skirting board (21) of the embossing frame elements (20) and engages the Prägahmenelemente (20) with the second clamping plate (18) braced. Werkzeuganordnung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die den Hochstellrahmen (5) des Werkzeugunterteils (2) bildenden Leisten (14) und Winkelstücke (15) durch Steckverbindungen miteinander verbindbar sind.Tool arrangement according to one of claims 1 to 7, characterized in that the raising frame (5) of the tool lower part (2) forming strips (14) and angle pieces (15) are connectable to each other by plug connections. Werkzeuganordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Spannleisten (16) eine Stufenfläche der den Hochstellrahmen (5) bildenden Leisten (14) und Winkelstücke (15) übergreifen und den Hochstellrahmen (5) mit der ersten Spannplatte (4) verspannen.Tool arrangement according to one of claims 1 to 8, characterized in that the clamping bars (16) engage over a step surface of the raising frame (5) forming strips (14) and angle pieces (15) and the raising frame (5) with the first clamping plate (4). tense. Werkzeuganordnung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Spannplatten (4, 8) in Längs- und Querrichtung mit Nuten (18, 18') zur Montage der den Hochstellrahmen (5) und den Prägerahmen (9) bildenden Teile versehen sind.Tool arrangement according to one of claims 1 to 9, characterized in that the clamping plates (4, 8) in the longitudinal and transverse directions with grooves (18, 18 ') for mounting the raising frame (5) and the embossing frame (9) forming parts are. Werkzeuganordnung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die erste Spannplatte (4) als Lochplatte ausgebildet ist.Tool arrangement according to one of claims 1 to 10, characterized in that the first clamping plate (4) is designed as a perforated plate.
EP20090011694 2009-09-12 2009-09-12 Tool assembly for shaping the border of a tub on a metallic tub blank Not-in-force EP2295162B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20090011694 EP2295162B1 (en) 2009-09-12 2009-09-12 Tool assembly for shaping the border of a tub on a metallic tub blank
ES09011694T ES2444420T3 (en) 2009-09-12 2009-09-12 Useful arrangement for forming a cuvette edge in a metal cuvette blank
PT09011694T PT2295162E (en) 2009-09-12 2009-09-12 Tool assembly for shaping the border of a tub on a metallic tub blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090011694 EP2295162B1 (en) 2009-09-12 2009-09-12 Tool assembly for shaping the border of a tub on a metallic tub blank

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EP2295162A1 true EP2295162A1 (en) 2011-03-16
EP2295162B1 EP2295162B1 (en) 2013-11-13

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EP2669025A1 (en) * 2011-01-28 2013-12-04 Toyota Jidosha Kabushiki Kaisha Press forming dies
CN105798099A (en) * 2016-06-03 2016-07-27 昆山达亚汽车零部件有限公司 Forming technology for skylight reinforcing plate
EP3459410A1 (en) * 2017-09-21 2019-03-27 Franz Kaldewei GmbH & Co.KG Method for the preparation of a sheet metal sanitary bathtub and installation for carrying out the method
CN110280663A (en) * 2019-07-08 2019-09-27 湘潭大学 A kind of top cover inner plate stamping die

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CN108746291A (en) * 2018-05-15 2018-11-06 芜湖君如保温材料有限公司 A kind of boxboard crimping unit of assembled water tank
DE102022114727A1 (en) 2022-06-10 2024-01-04 Franz Kaldewei Gmbh & Co. Kg Method for producing a sanitary component

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CN110280663A (en) * 2019-07-08 2019-09-27 湘潭大学 A kind of top cover inner plate stamping die

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PT2295162E (en) 2014-02-17
ES2444420T3 (en) 2014-02-25
EP2295162B1 (en) 2013-11-13

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