DE19603542A1 - Device with separating wedges for splitting two=part extrusion tool - Google Patents

Device with separating wedges for splitting two=part extrusion tool

Info

Publication number
DE19603542A1
DE19603542A1 DE1996103542 DE19603542A DE19603542A1 DE 19603542 A1 DE19603542 A1 DE 19603542A1 DE 1996103542 DE1996103542 DE 1996103542 DE 19603542 A DE19603542 A DE 19603542A DE 19603542 A1 DE19603542 A1 DE 19603542A1
Authority
DE
Germany
Prior art keywords
separating
tools
extrusion tool
driven
wedge
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.)
Ceased
Application number
DE1996103542
Other languages
German (de)
Inventor
Ozren R Dipl Ing Kuzmanovic
Herbert Schubert
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.)
MICRO TECHNICA GmbH
Original Assignee
MICRO TECHNICA GmbH
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 MICRO TECHNICA GmbH filed Critical MICRO TECHNICA GmbH
Priority to DE1996103542 priority Critical patent/DE19603542A1/en
Priority to DE1997101021 priority patent/DE19701021A1/en
Publication of DE19603542A1 publication Critical patent/DE19603542A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
    • B21C35/06—Cleaning dies, ducts, containers or mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
    • B23P19/025—For detaching only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

Two symmetrically located wedge-form separating tools (1) are introduced under large force in the dividing slot (2) between the bottom die plate (3) and core piece (4) of the extrusion die. The tool is automatically centred radially and axially by the separating forces (5) when lifting from a work table, and by means of the separating wedges (7) an axial release of the annular press fit (8) of the die plate and core piece is made possible.

Description

Die Erfindung betrifft eine Vorrichtung zum Zerlegen eines Strangpreßwerkzeugs. Die in Frage kommenden Strangpreßwerkzeuge werden zur Herstellung von Metallprofilen, insbesondere von Aluminiumprofilen eingesetzt. Sie bestehen bei komplizierten und dünnwandigen Hohlprofilen im wesentlichen aus 2 scheibenförmigen Teilen, der Matrize (3) und dem Kernstück (4). Das Kernstück hat als formgebendes Teil einen Dorn, der in die Kontur der Maschine hineinragt (Brücken- oder Bügelwerkzeuge, siehe z. B. "Umformtechnik, Band 2" Hrsg. K. Lange, Springer-Verlag Berlin 1988).The invention relates to a device for disassembling an extrusion tool. The extrusion dies in question are used for the production of metal profiles, in particular aluminum profiles. In the case of complicated and thin-walled hollow profiles, they essentially consist of 2 disk-shaped parts, the die ( 3 ) and the core ( 4 ). The centerpiece has a mandrel as a shaping part that protrudes into the contour of the machine (bridge or ironing tools, see eg "Umformtechnik, Band 2" ed. K. Lange, Springer-Verlag Berlin 1988).

Die Fügung der beiden Teilstücke wird üblicherweise aufgrund hoher Toleranzanforderungen an ihre relative Lage durch statisch überbestimmte, innige Preßpassungen erreicht. Die erste Passung ist eine ringförmige Passung, eine zweite Passung wird über 2 zusätzliche Paßstifte erreicht.The joining of the two sections is usually due to high Tolerance requirements for their relative position due to statically overdetermined intimate press fits achieved. The first fit is an annular one Fit, a second fit is achieved with 2 additional dowel pins.

Nach einem Arbeitseinsatz mit Preßdrücken bis 100 kp/mm² = 109 N/m² müssen Matrize und Kernstück getrennt werden. Auf Grund der Überbestimmtheit sind, dazu nicht im voraus zu definierende Kräfte bis zu 40.000 N notwendig.After working with pressures up to 100 kp / mm² = 109 N / m² die and core must be separated. Due to the Overdetermination are, up to this, forces not to be defined in advance 40,000 N necessary.

Die zum Zerlegen eines Strangpreßwerkzeugs angewendete Methoden lassen sich in 2 Gruppen aufteilen:Leave the methods used to disassemble an extrusion tool divided into 2 groups:

  • a) Das technisch naheliegende Verfahren einer Abdrückvorrichtung mit Aufbringen einer Axialkraft, wie in den Patentschriften DE 31 29 086 A1 und EP 0 280 649 R1 beschrieben, kann wegen einer fehlenden geeigneten Abdruckfläche nicht angewendet werden.a) The technically obvious method of a push-off device with Applying an axial force, as in the patents DE 31 29 086 A1 and EP 0 280 649 R1 described, because of a lack of suitable Imprint area cannot be used.
  • b) Alle Strangpreßwerkzeuge weisen jedoch eine Trennut (2) zwischen Matrize und Kernstück auf. Die Trennung wird deshalb üblicherweise dadurch bewerkstelligt, daß ein geeigneter Keil, meist mit Muskelkraft mittels Hammer, in die Trennut getrieben wird.b) However, all extrusion tools have a separating groove ( 2 ) between the die and the core. The separation is therefore usually accomplished by driving a suitable wedge, usually with muscle power using a hammer, into the separation groove.

Die letztgenannte Methode hat jedoch den Nachteil, daß auf Grund einer unsymmetrisch eingeführten Trennkraft und/oder auf Grund der unsymmetrischen, da statisch überbestimmten Verklemmung eine Verkantung der beiden zu trennenden Teile (3) und (4) auftritt. Auch geringe Verkantungen der beiden Teile von nur wenigen Winkelminuten können Beschädigungen der Passung am Außenring und an den Paßstiften als auch des Dornes, der in die Innenformkontur der Matrize ragt, verursachen. Die Standzeit des Werkzeugs wird dadurch erheblich verringert, wenn nicht sogar Beschädigungen zur Unbrauchbarkeit führen.However, the last-mentioned method has the disadvantage that, due to an asymmetrically introduced separating force and / or due to the asymmetrical, because statically overdetermined jamming, the two parts ( 3 ) and ( 4 ) to be separated are tilted. Even slight tilting of the two parts of just a few angular minutes can damage the fit on the outer ring and on the dowel pins as well as the mandrel that protrudes into the inner contour of the die. The service life of the tool is reduced considerably, if not damage leads to uselessness.

Zudem kann durch plötzliches Überschreiten der Klemmkräfte bei einer unkontrollierten, schlagenden Erhöhung der Trennkraft ein "explosionsartiges Auseinanderspritzen" der beiden Teile erfolgen. In addition, by suddenly exceeding the clamping forces at one uncontrolled, striking increase in separation force an "explosive Splash apart "of the two parts.  

Durch eine kontrollierte, fein einstellbare und gleichmäßig auf den Umfang des Strangpreßwerkzeugs aufgebrachte Trennkraft würde sowohl eine Verkantung der beiden Teile als auch ein unkontrolliertes "Auseinanderspritzen" verhindert.Through a controlled, finely adjustable and even on the circumference of the Extrusion tool applied separation force would be both a tilt of the two parts as well as an uncontrolled "splashing apart" prevented.

Die Aufgabe der Trennung der Matrize von dem Kernstück wird erfindungsgemäß dadurch gelöst,The task of separating the die from the centerpiece becomes solved according to the invention by

  • - daß radial 3 oder mehr symmetrisch angeordnete, keilförmige Trennwerkzeuge oder Trennprismen (1) in die Trennut (2) des Strangpreßwerkzeugs eingeführt werden;- That radially 3 or more symmetrically arranged, wedge-shaped separating tools or separating prisms ( 1 ) are inserted into the separating groove ( 2 ) of the extrusion tool;
  • - daß dabei das Strangpreßwerkzeug unter leichter Anhebung von einem Arbeitstisch (6) selbsttätig zentriert und auch axial fixiert wird- That the extrusion tool is automatically centered and slightly axially fixed with a slight increase from a work table ( 6 )
  • - daß die Trennkraft durch hydraulische Antriebe der einzelnen Trennwerkzeuge über die Keilform (7) verstärkt in die Trennut eingebracht wird,- That the separating force is increasingly introduced into the separating groove by hydraulic drives of the individual separating tools via the wedge shape ( 7 ),
  • - daß dadurch eine symmetrische, selbstzentrierende, radiale Krafteinleitung (5) mit gleichmäßig geführter, axialer Öffnungsbewegung gewährleistet ist,- This ensures a symmetrical, self-centering, radial introduction of force ( 5 ) with a uniformly guided, axial opening movement,
  • - daß durch den hydraulischem Antrieb, eine gedrosselte, langsame Trennbewegung und damit auch eine langsame axiale Öffnungsbewegung gewährleistet ist,- That by the hydraulic drive, a throttled, slow Separation movement and thus a slow axial opening movement is guaranteed,
  • - daß insbesondere durch einen Übersetzungsantrieb Pneumatik-Hydraulik die Aufgabe einfach und preisgünstig an vorhandene Pneumatikinstallationen anschließbar ist.- That in particular by a translation drive pneumatic hydraulic the task simple and inexpensive to existing ones Pneumatic installations can be connected.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin,The advantages that can be achieved with the invention are, in particular,

  • - daß eine Verkantung der beiden zu trennenden Teile durch die geführte Öffnungsbewegung auch bei asymmetrischen Passungskräften verhindert wird- That a tilt of the two parts to be separated by the guided Opening movement prevented even with asymmetrical fit forces becomes
  • - daß ein unkontrolliertes "Auseinanderspritzen" der beiden zu trennenden Teile durch die langsame Trennbewegung und dosierte Krafterhöhung verhindert wird.- That an uncontrolled "splashing apart" of the two to be separated Divide through the slow separation movement and metered increase in force is prevented.
Legende Bild 1Legend picture 1

Strangpreßwerkzeug mit Matrize (3), Kernstück (4) und Trommel (2), durch das Trennwerkzeug (1) vom Tisch (5) angehoben und axial fixiert. Extrusion tool with die ( 3 ), core ( 4 ) and drum ( 2 ), lifted from the table ( 5 ) by the cutting tool ( 1 ) and axially fixed.

Legende Bild 2Legend picture 2

Trennwerkzeug (1) mit den Trennkeilen (7) übt die Trennkraft (5) auf das Strangpreßwerkzeugs (3 und 4) aus. Cutting tool ( 1 ) with the cutting wedges ( 7 ) exerts the cutting force ( 5 ) on the extrusion tool ( 3 and 4 ).

Legende Bild 3Legend picture 3

Trennwerkzeug (1) liegt mit den Trennkeilen (7) in der Trennut (2) des Strangpreßwerkzeugs (3 und 4). Die Matrize (3) und das Kernstück (4) sind durch eine ringförmige Passung (8) durch Preßsitz verbunden.Cutting tool ( 1 ) lies with the cutting wedges ( 7 ) in the cutting groove ( 2 ) of the extrusion tool ( 3 and 4 ). The die ( 3 ) and the core ( 4 ) are connected by an annular fit ( 8 ) by a press fit.

Claims (6)

1. Vorrichtung mit Trennkeilen zum Zerlegen eines 2-teiligen Strangpreßwerkzeugs mit Trennut, dadurch gekennzeichnet daß zwei symmetrisch angeordnete, keilförmige Trennwerkzeuge (1) unter großer Kraft in die Trennut (2) zwischen Matrize (3) und Kernstück (4) des Strangpreßwerkzeugs eingeführt werden, daß das Werkzeug selbsttätig durch die Trennkräfte (5) radial und axial unter Anhebung von einem Arbeitstisch (6) zentriert wird und über die Trennkeile (7) eine axiale Lösung der ringförmigen Preßpassung (8) von Matrize und Kernstück ermöglicht wird.1. Device with separation wedges for disassembling a 2-part extrusion tool with separation groove, characterized in that two symmetrically arranged, wedge-shaped separation tools ( 1 ) are inserted under great force into the separation groove ( 2 ) between the die ( 3 ) and core ( 4 ) of the extrusion tool that the tool is automatically centered radially and axially with the lifting of a work table ( 6 ) by the separating forces ( 5 ) and an axial release of the annular interference fit ( 8 ) of the die and the core piece is made possible via the separating wedges ( 7 ). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß anstatt zwei drei oder mehr symmetrisch angeordnete Trennwerkzeuge (1) in die Trennut (2) eingreifen.2. Device according to claim 1, characterized in that intervene instead of two, three or more symmetrically arranged cutting tools (1) in the separation groove (2). 3. Vorrichtung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß jedes der keilförmigen Trennwerkzeuge (1) getrennt angetrieben wird, um eine Zentrierung zu ermöglichen.3. Apparatus according to claim 1 and 2, characterized in that each of the wedge-shaped cutting tools ( 1 ) is driven separately to enable centering. 4. Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die keilförmigen Trennwerkzeuge (1) schwimmend gelagert sind, und deshalb durch nur einen Antrieb angetrieben werden können.4. The device according to claim 1, characterized in that the wedge-shaped cutting tools ( 1 ) are floating, and can therefore be driven by only one drive. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Trennwerkzeuge (1) durch einen gedrosselten, langsamen Hydraulikantrieb angetrieben werden.5. The device according to claim 1, characterized in that the cutting tools ( 1 ) are driven by a throttled, slow hydraulic drive. 6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Trennwerkzeuge (1) durch einen pneumatisch-hydraulischen Übersetzungsantrieb angetrieben werden und dadurch die Vorrichtung an vorhandene Pneumatikinstallationen anschließbar ist.6. The device according to claim 1, characterized in that the separating tools ( 1 ) are driven by a pneumatic-hydraulic translation drive, and thereby the device can be connected to existing pneumatic installations.
DE1996103542 1996-01-30 1996-01-30 Device with separating wedges for splitting two=part extrusion tool Ceased DE19603542A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1996103542 DE19603542A1 (en) 1996-01-30 1996-01-30 Device with separating wedges for splitting two=part extrusion tool
DE1997101021 DE19701021A1 (en) 1996-01-30 1997-01-14 Parting tool for jammed extrusion die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996103542 DE19603542A1 (en) 1996-01-30 1996-01-30 Device with separating wedges for splitting two=part extrusion tool

Publications (1)

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DE19603542A1 true DE19603542A1 (en) 1997-08-14

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108328287A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 Grinding wheel aluminium dish disassembles the separating mechanism and its separating technology of machine automatically
CN108326544A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 The two-stage separating mechanism and technique of grinding wheel automatic dismounting machine containing Teflon piece
CN108333010A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 Grinding wheel automatic dismounting machine containing Teflon piece and its dismounting process
CN108341237A (en) * 2018-02-08 2018-07-31 东莞市益汇知识产权服务有限公司 Grinding wheel aluminium dish disassembles machine and its dismantling technique automatically
CN109382418A (en) * 2017-08-09 2019-02-26 广东兴发铝业有限公司 A kind of vertical die-sinking machine producing aluminum profile
CN111112367A (en) * 2020-03-03 2020-05-08 台州市皓仔邦工业设计有限公司 Mould opening device of external demoulding antique silver element extrusion mould
CN111203481A (en) * 2020-03-03 2020-05-29 台州市皓仔邦工业设计有限公司 Antique silver printing mold capable of being demolded outside machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109382418A (en) * 2017-08-09 2019-02-26 广东兴发铝业有限公司 A kind of vertical die-sinking machine producing aluminum profile
CN108328287A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 Grinding wheel aluminium dish disassembles the separating mechanism and its separating technology of machine automatically
CN108326544A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 The two-stage separating mechanism and technique of grinding wheel automatic dismounting machine containing Teflon piece
CN108333010A (en) * 2018-02-08 2018-07-27 东莞市益汇知识产权服务有限公司 Grinding wheel automatic dismounting machine containing Teflon piece and its dismounting process
CN108341237A (en) * 2018-02-08 2018-07-31 东莞市益汇知识产权服务有限公司 Grinding wheel aluminium dish disassembles machine and its dismantling technique automatically
CN108341237B (en) * 2018-02-08 2020-01-07 浙江亚孙砂轮有限公司 Automatic grinding wheel aluminum disc disassembling machine and disassembling process thereof
CN111112367A (en) * 2020-03-03 2020-05-08 台州市皓仔邦工业设计有限公司 Mould opening device of external demoulding antique silver element extrusion mould
CN111203481A (en) * 2020-03-03 2020-05-29 台州市皓仔邦工业设计有限公司 Antique silver printing mold capable of being demolded outside machine

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