EP0770437B1 - Punching tool with holding means for stripper plate - Google Patents

Punching tool with holding means for stripper plate Download PDF

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Publication number
EP0770437B1
EP0770437B1 EP96115920A EP96115920A EP0770437B1 EP 0770437 B1 EP0770437 B1 EP 0770437B1 EP 96115920 A EP96115920 A EP 96115920A EP 96115920 A EP96115920 A EP 96115920A EP 0770437 B1 EP0770437 B1 EP 0770437B1
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EP
European Patent Office
Prior art keywords
punching tool
stripping plate
tool according
punch
holding device
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
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EP96115920A
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German (de)
French (fr)
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EP0770437A1 (en
Inventor
Albrecht Schneider
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Mate Precision Tooling GmbH
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Mate Precision Tooling GmbH
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Publication date
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Publication of EP0770437A1 publication Critical patent/EP0770437A1/en
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Publication of EP0770437B1 publication Critical patent/EP0770437B1/en
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    • 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
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • B21D45/006Stripping-off devices

Definitions

  • the invention relates to a punching tool with a guide bush, which can be removed downwards in the punching direction Punches and carries a wiper plate that by holding members to be attached to the guide bush in the Engagement area of the punch can be determined and after Loosening the holding members is axially removable from the punch, wherein the holding members are movably mounted on the guide bush and between a locking the wiper plate and a position releasing them are movable.
  • the stripper plate is over the already assembled punch into the guide bush used and with the help of retaining plates attached to the guide bush be screwed tight, secured in the axial direction. It is often the case with punching tools during operation necessary, the punch and / or the stripper plate exchange. To do this, remove all retaining plates every time necessary, which is not least because of the small and therefore difficult to handle mounting screws as has proven to be very cumbersome and time consuming.
  • a simple mounting of the stripper plate is from punching tools known, in which the punch up is removed from the guide bush.
  • the wiper plate is inserted into a laterally open guide, so that it after removing the punch is free and accordingly can be easily expanded.
  • the stripper plate must be removed to include the stamp To be able to remove such a holder is not applicable here.
  • the object of the present invention is that Insert the stripper plate in a punching tool to simplify the type mentioned at the beginning.
  • the task is performed using a stamping tool solved the features of claim 1.
  • the movable holding device makes it easier to insert the Scraper plate as it guides the scraper plate centered when inserted to the side of the guide bush and the mechanic the time-consuming threading of the tightly fitting Scraper plate relieved on the punch.
  • An elastic element expediently supports the Release movement of the holding device. This jumps in the actuation of the holding members, the holding device with the Scraper plate facing down from the guide bush. Without this support the disengagement movement it would be necessary to grip the holding device or the wiper plate and pull away from the guide bush.
  • the holding members are rocker arms with holding lugs, by pressing them one-sided against a spring force the scraper plate and thus also the holding device can be unlocked is.
  • Locking mechanisms such as. B. rotary traps or simple locking bolt
  • the rocker arm in their easy handling. To accidentally unlock it To avoid the scraper plate, have the holding links expediently safeguards against unintentional opening on.
  • Fig. 1 shows a punch tool 10 for a turret punch Amada brand. It essentially consists of a guide bush 12, a punch stamp included therein (not shown), a stamp driver, of which only one in Fig.1 Stamp driver head 14 can be seen, and a stripper plate 16, which has a holding device 18 on the guide bush 12 is attached. Between the stamp driver head 14 and one of the guide bush 12 associated edge flange 20 several series springs 22 provided that the punch after the punching process back to its original position move.
  • the wiper plate 16 has one on its outer circumference Annular groove 24, which on a guide bead extending over 180 ° 26 (Fig.2) guided and centered in the holding device 18 is held.
  • the holding device 18 is in turn with axial projections in two diametrically opposite, groove-like recesses 28 in the guide bushing 12 performed, the axial displacement of the bracket in Allow punching direction.
  • the displacement path is limited the holding device 18 by a stop pin 30 in each case in each recess 28 which is transverse to the punching direction on the Guide sleeve 12 is attached and in an axially extending Groove 32 engages in each projection of the holding device 18.
  • the rocker arms 34 are pivotable about a pivot bearing 40 so that by depressing the rocker arm 34 against the force of one Locking spring 42 on the other side of the pivot bearing 40 located retaining lugs 36 radially outward, in a the stripper plate 16 releasing position are movable.
  • each rocker arm 34 in the tool direction axially displaceable securing member 44 provided with a safety paragraph 46 under the operating side of the Rocker arm 34 engages and blocks it.
  • the securing link 44 is in the direction of the closed position from one Spring 48 preloaded.
  • an unlocking slide 50 is provided which on the operating side of the rocker arm 34 in the direction of displacement of the securing member 44 slidably arranged is.
  • the unlocking slide 50 has a U-shaped Profile and engages a projection 52 of the securing member 44 at.
  • the unlocking slide obstructs 50 the depression of the rocker arm 34 not if the securing member 44 over the projection 52 in a rocker arm 34 free position has been moved.
  • the stripper plate 16 is removed in such a way that one first with the unlocking slide 50, the securing member 44 moves until the locking shoulder 46 the rocker arm 34 releases. Now the rocker arm 34 can turn the pivot 40 are pivoted against the force of the locking spring 42, so that the retaining lugs 36 release the stripper plate 16.
  • the position of the unlocking slide 50 on the rocker arm 34 allows easy handling, as with one finger both the release, as well as the actuation of the rocker arm can be made. Accidental triggering of the rocker arm 34, for example by a shock, is not possible.
  • the guide bead 26 in the holding device 18 includes the Scraper plate 16 horseshoe-shaped, d. H. only over half of them Scope so that they are in the disengaged position of the Holding device 18 laterally from the opening of the horseshoe Guide bead 26, axially at the end of one, in Pull out the area of the opening arranged rocker arm 34 past is.
  • the holding device 18 must at least be so far disengage from the guide bush 12 that the wiper plate 16 is no longer in the engagement area of the punch.
  • the punching tool 10 is assembled in accordance with FIG reverse direction. After installing the punch in the guide bushing 12 becomes the stripper plate 16 laterally inserted into the guide bead 26 of the holding device 18, until in the end position one with reference to the guide bush 12 centered position. Then the Holding device against the force of the release springs 54 against the guide sleeve 12 pushed. When you reach the final Position of the wiper plate 16 snap the rocker arm 34 by the force of the locking springs 42 with their retaining lugs 36 into the annular groove 24 of the wiper plate 16. At the same time, the springs 48 press the securing members 44 with its paragraphs 46 under the rocker arm, so that the wiper plate 16 is locked and secured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The tool has a guide bush (12), which accepts a stamping die which can extend downwards in the direction of stamping. It also supports a reinforcement plate (16), which can be fixed in the engagement region of the die, using retaining links (34,36) which are fixed to the bush. The plate can be removed axially from the die after the links are released. The retaining links are mounted on the guide bush so that they can be moved, between a position in which the plate is locked in place, and a position in which it is released.

Description

Die Erfindung betrifft ein Stanzwerkzeug mit einer Führungsbüchse, die einen in Stanzrichtung nach unten ausbaubaren Stanzstempel aufnimmt und eine Abstreiferplatte trägt, die durch an der Führungsbüchse anzubringende Halteglieder im Eingriffsbereich des Stanzstempels festlegbar und nach dem Lösen der Halteglieder axial vom Stanzstempel abziehbar ist, wobei die Halteglieder an der Führungsbüchse beweglich gelagert und zwischen einer die Abstreiferplatte arretierenden und einer sie freigebenden Stellung bewegbar sind.The invention relates to a punching tool with a guide bush, which can be removed downwards in the punching direction Punches and carries a wiper plate that by holding members to be attached to the guide bush in the Engagement area of the punch can be determined and after Loosening the holding members is axially removable from the punch, wherein the holding members are movably mounted on the guide bush and between a locking the wiper plate and a position releasing them are movable.

Bei Stanzwerkzeugen dieser Art wird die Abstreiferplatte über den bereits montierten Stanzstempel in die Führungsbüchse eingesetzt und mit Hilfe von Halteblechen, die an der Führungsbüchse festgeschraubt werden, in axialer Richtung gesichert. Während des Betriebes ist es bei Stanzwerkzeugen oftmals notwendig, den Stanzstempel und/oder die Abstreiferplatte auszutauschen. Dazu ist jedesmal ein Entfernen aller Haltebleche notwendig, was sich nicht zuletzt wegen der kleinen und deswegen schlecht handhabbaren Befestigungsschrauben als sehr umständlich und zeitaufwendig erwiesen hat.With punching tools of this type, the stripper plate is over the already assembled punch into the guide bush used and with the help of retaining plates attached to the guide bush be screwed tight, secured in the axial direction. It is often the case with punching tools during operation necessary, the punch and / or the stripper plate exchange. To do this, remove all retaining plates every time necessary, which is not least because of the small and therefore difficult to handle mounting screws as has proven to be very cumbersome and time consuming.

Eine einfache Halterung der Abstreiferplatte ist von Stanzwerkzeugen bekannt, bei welchen der Stanzstempel nach oben aus der Führungsbüchse ausgebaut wird. Die Abstreiferplatte ist in eine seitlich offene Führung eingeschoben, so daß sie nach dem Ausbau des Stanzstempels frei ist und dementsprechend leicht ausgebaut werden kann. Da bei einem Stanzwerkzeug der eingangs beschriebenen Art jedoch zunächst die Abstreiferplatte ausgebaut werden muß, um auch den Stanzstempel entfernen zu können, ist hier eine solche Halterung nicht anwendbar.A simple mounting of the stripper plate is from punching tools known, in which the punch up is removed from the guide bush. The wiper plate is inserted into a laterally open guide, so that it after removing the punch is free and accordingly can be easily expanded. As with a punch of the type described above, however, the stripper plate must be removed to include the stamp To be able to remove such a holder is not applicable here.

Aus der US-A-4,248,111 ist ein Stanzwerkzeug gemäß dem Oberbegriff des Anspruchs 1 bekannt.From US-A-4,248,111 is a punching tool according to the preamble of claim 1 known.

Der Vorteil eines solchen Stanzwerkzeuges besteht darin, daß zum Wechsel des Stanzstempels und der Abstreiferplatte kein umständliches Lösen und Festziehen der Schrauben mittels eines Werkzeugs erforderlich ist, wobei bisher insbesondere das Wiedereinfädeln der kleinen Befestigungsschrauben den Monteur oft vor eine Geduldsprobe stellte. Mit den Haltgliedern hingegen ist ein einfaches Entriegeln und Arretieren der Abstreiferplatte möglich.The advantage of such a punch is that to change the punch and the scraper plate none cumbersome loosening and tightening the screws using a Tool is required, so far in particular that Reinstall the small fastening screws often put a test of patience. With the retaining links, however is a simple unlocking and locking of the wiper plate possible.

Die Aufgabe der vorliegenden Erfindung besteht darin, das Einlegen der Abstreiferplatte bei einem Stanzwerkzeug der eingangs genannten Art zu vereinfachen.The object of the present invention is that Insert the stripper plate in a punching tool to simplify the type mentioned at the beginning.

Erfindungsgemäß wird die Aufgabe durch ein Stanzwerkzeug mit den Merkmalen des Anspruchs 1 gelöst.According to the invention, the task is performed using a stamping tool solved the features of claim 1.

Die bewegliche Haltevorrichtung erleichtert das Einlegen der Abstreiferplatte, da sie über die Führung die Abstreifer-platte beim seitlichen Einschieben zur Führungsbüchse zentriert und dem Monteur das zeitaufwendige Einfädeln der enggepaßten Abstreiferplatte auf den Stanzstempel erleichtert.The movable holding device makes it easier to insert the Scraper plate as it guides the scraper plate centered when inserted to the side of the guide bush and the mechanic the time-consuming threading of the tightly fitting Scraper plate relieved on the punch.

Zweckmäßigerweise unterstützt ein elastisches Element die Ausrückbewegung der Haltevorrichtung. Dadurch springt nach dem Betätigen der Halteglieder die Haltevorrichtung mit der Abstreiferplatte nach unten von der Führungsbüchse weg. Ohne diese Unterstützung der Ausrückbewegung wäre es notwendig, die Haltevorrichtung oder die Abstreiferplatte zu greifen und von der Führungsbüchse weg zu ziehen.An elastic element expediently supports the Release movement of the holding device. This jumps in the actuation of the holding members, the holding device with the Scraper plate facing down from the guide bush. Without this support the disengagement movement it would be necessary to grip the holding device or the wiper plate and pull away from the guide bush.

In weiterer bevorzugter Ausgestaltung der Erfindung ist vorgesehen, daß die Halteglieder Kipphebel mit Haltenasen sind, durch deren einseitiges Niederdrücken gegen eine Federkraft die Abstreiferplatte und damit auch die Haltevorrichtung entriegelbar ist. Gegenüber anderen, prinzipiell ebenfalls verwendbaren Verriegelungsmechanismen, wie z. B. Drehfallen oder einfachen Sicherungsbolzen, besteht der Vorteil der Kipphebel in ihrer einfachen Handhabung. Um ein versehentliches Entriegeln der Abstreiferplatte zu vermeiden, weisen die Halteglieder zweckmäßigerweise Sicherungen gegen unbeabsichtigtes Öffnen auf.In a further preferred embodiment of the invention, that the holding members are rocker arms with holding lugs, by pressing them one-sided against a spring force the scraper plate and thus also the holding device can be unlocked is. Compared to others that can also be used in principle Locking mechanisms, such as. B. rotary traps or simple locking bolt, there is the advantage of the rocker arm in their easy handling. To accidentally unlock it To avoid the scraper plate, have the holding links expediently safeguards against unintentional opening on.

Nachstehend wird anhand der beigefügten Zeichnungen näher auf ein Ausführungsbeispiel der Erfindung eingegangen. Es zeigen:

Fig. 1
einen Querschnitt durch ein Stanzwerkzeug mit verriegelter Abstreiferplatte;
Fig. 2
einen Querschnitt durch das Stanzwerkzeug nach Fig. 1 mit entriegelter Abstreifer-platte.
An exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawings. Show it:
Fig. 1
a cross section through a punch with locked wiper plate;
Fig. 2
a cross section through the punching tool according to FIG. 1 with the stripper plate unlocked.

Fig. 1 zeigt ein Stanzwerkzeug 10 für eine Revolverstanze des Fabrikats Amada. Es besteht im wesentlichen aus einer Führungsbüchse 12, einem darin aufgenommenen Stanzstempel (nicht gezeigt), einem Stempeltreiber, von welchem in Fig.1 nur ein Stempeltreiberkopf 14 zu sehen ist, und einer Abstreiferplatte 16, die über eine Haltevorrichtung 18 an der Führungsbüchse 12 angebracht ist. Zwischen dem Stempeltreiberkopf 14 und einem der Führungsbüchse 12 zugehörigen Randflansch 20 sind mehrere in Serie geschaltete Tellerfedern 22 vorgesehen, die den Stanzstempel nach dem Stanzvorgang wieder in seine Ausgangsstellung bewegen.Fig. 1 shows a punch tool 10 for a turret punch Amada brand. It essentially consists of a guide bush 12, a punch stamp included therein (not shown), a stamp driver, of which only one in Fig.1 Stamp driver head 14 can be seen, and a stripper plate 16, which has a holding device 18 on the guide bush 12 is attached. Between the stamp driver head 14 and one of the guide bush 12 associated edge flange 20 several series springs 22 provided that the punch after the punching process back to its original position move.

Die Abstreiferplatte 16 besitzt an ihrem äußeren Umfang eine Ringnut 24, die an einem sich über 180° erstreckenden Führungswulst 26 (Fig.2) geführt und zentrisch in der Haltevorrichtung 18 gehalten ist. Die Haltevorrichtung 18 ist ihrerseits mit axialen Vorsprüngen in zwei diametral gegenüberliegenden, nutartigen Ausnehmungen 28 in der Führungsbüchse 12 geführt, die eine axiale Verschiebbarkeit der Halterung in Stanzrichtung ermöglichen. Begrenzt wird der Verschiebeweg der Haltevorrichtung 18 durch jeweils einen Anschlagbolzen 30 in jeder Ausnehmung 28, der quer zur Stanzrichtung an der Führungsbüchse 12 befestigt ist und in eine axial verlaufende Nut 32 in jedem Vorsprung der Haltevorrichtung 18 eingreift.The wiper plate 16 has one on its outer circumference Annular groove 24, which on a guide bead extending over 180 ° 26 (Fig.2) guided and centered in the holding device 18 is held. The holding device 18 is in turn with axial projections in two diametrically opposite, groove-like recesses 28 in the guide bushing 12 performed, the axial displacement of the bracket in Allow punching direction. The displacement path is limited the holding device 18 by a stop pin 30 in each case in each recess 28 which is transverse to the punching direction on the Guide sleeve 12 is attached and in an axially extending Groove 32 engages in each projection of the holding device 18.

Im eingebauten Zustand werden die Abstreiferplatte 16 und die Haltevorrichtung 18 von zwei diametral gegenüberliegenden Kipphebeln 34 mit Haltenasen 36, die in die Ringnut 24 eingreifen, axial unverschieblich festgehalten. Einer der Kipphebel 34 ist mitten in der Öffnung des sich hufeisenförmig über 180° des Umfangs der Abstreiferplatte 16 erstreckenden Führungswulsts 26 angeordnet, der andere greift durch eine seiner Breite entsprechende Aussparung in der Umfangwand der Haltervorrichtung 18 hindurch in die Ringnut 24 ein. Ggf. können auch mehr Halteglieder vorgesehen sein. Dadurch läßt sich der Halt verbessern, die Handhabung wird jedoch schwieriger. Ein ringförmiger Teil 38 der Haltevorrichtung 18 liegt in geschlossenem Zustand der Halterung 18 an der Unterseite der Führungsbüchse 12 an und sorgt dadurch für eine exakte Positionierung der Abstreiferplatte 16.In the installed state, the wiper plate 16 and the Holding device 18 of two diametrically opposite Rocker arms 34 with retaining lugs 36 which engage in the annular groove 24, axially fixed. One of the rocker arms 34 is in the middle of the opening of the horseshoe extending over 180 ° of the circumference of the stripper plate 16 Guide bead 26 arranged, the other engages through one its width corresponding recess in the peripheral wall of the Holder device 18 into the annular groove 24. Possibly. more holding members can also be provided. This leaves the grip improves, but handling becomes more difficult. An annular part 38 of the holding device 18 lies in the closed state of the holder 18 on the underside the guide bushing 12 and thereby ensures an exact Positioning the scraper plate 16.

Die Kipphebel 34 sind um ein Drehlager 40 schwenkbar, so daß durch Niederdrücken des Kipphebels 34 gegen die Kraft einer Arretierfeder 42 die auf der anderen Seite des Drehlagers 40 gelegenen Haltenasen 36 radial nach außen, in eine die Abstreiferplatte 16 freigebende Stellung bewegbar sind.The rocker arms 34 are pivotable about a pivot bearing 40 so that by depressing the rocker arm 34 against the force of one Locking spring 42 on the other side of the pivot bearing 40 located retaining lugs 36 radially outward, in a the stripper plate 16 releasing position are movable.

Um ein versehentliches Entriegeln der Abstreiferplatte 16 zu verhindern, ist an jedem Kipphebel 34 ein in Werkzeugrichtung axial verschiebliches Sicherungsglied 44 vorgesehen, das mit einem Sicherungsabsatz 46 unter die Betätigungsseite des Kipphebels 34 greift und diesen blockiert. Das Sicherungsglied 44 wird in Richtung der geschlossenen Stellung von einer Feder 48 vorbelastet. Zur Entriegelung des Sicherungsgliedes 44 ist ein Entriegelungsschieber 50 vorgesehen, der auf der Betätigungsseite des Kipphebels 34 in der Verschieberichtung des Sicherungsgliedes 44 verschieblich angeordnet ist. Der Entriegelungsschieber 50 besitzt ein U-förmiges Profil und greift an einen Vorsprung 52 des Sicherungsgliedes 44 an. Dank seines U-förmigen Profils, dessen Stege jeweils seitlich des Sicherungsabsatzes 46 liegen, behindert der Entriegelungsschieber 50 das Niederdrücken des Kipphebels 34 nicht, wenn das Sicherungsglied 44 über den Vorsprung 52 in eine den Kipphebel 34 freigebene Stellung verschoben wurde. To inadvertently unlock the stripper plate 16 prevent, is on each rocker arm 34 in the tool direction axially displaceable securing member 44 provided with a safety paragraph 46 under the operating side of the Rocker arm 34 engages and blocks it. The securing link 44 is in the direction of the closed position from one Spring 48 preloaded. To unlock the safety link 44 an unlocking slide 50 is provided which on the operating side of the rocker arm 34 in the direction of displacement of the securing member 44 slidably arranged is. The unlocking slide 50 has a U-shaped Profile and engages a projection 52 of the securing member 44 at. Thanks to its U-shaped profile, whose webs each to the side of the safety shoulder 46, the unlocking slide obstructs 50 the depression of the rocker arm 34 not if the securing member 44 over the projection 52 in a rocker arm 34 free position has been moved.

Der Ausbau der Abstreiferplatte 16 erfolgt in der Weise, daß man zunächst mit dem Entriegelungsschieber 50 das Sicherungsglied 44 verschiebt, bis der Sicherungsabsatz 46 den Kipphebel 34 freigibt. Nun kann der Kipphebel 34 um das Drehlager 40 gegen die Kraft der Arretierfeder 42 verschwenkt werden, so daß die Haltenasen 36 die Abstreiferplatte 16 freigeben. Die Lage des Entriegelungsschiebers 50 auf dem Kipphebel 34 gestattet eine einfache Handhabung, da mit einem Finger sowohl die Entsicherung, als auch die Betätigung des Kipphebels vorgenommen werden kann. Ein zufälliges Auslösen des Kipphebels 34, beispielsweise durch einen Stoß, ist hingegen nicht möglich.The stripper plate 16 is removed in such a way that one first with the unlocking slide 50, the securing member 44 moves until the locking shoulder 46 the rocker arm 34 releases. Now the rocker arm 34 can turn the pivot 40 are pivoted against the force of the locking spring 42, so that the retaining lugs 36 release the stripper plate 16. The position of the unlocking slide 50 on the rocker arm 34 allows easy handling, as with one finger both the release, as well as the actuation of the rocker arm can be made. Accidental triggering of the rocker arm 34, for example by a shock, is not possible.

Sobald die Haltenasen 36 die Abstreiferplatte 16 freigeben, sorgen Ausrückfedern 54 über Auswurfbolzen 56 dafür, daß die Haltevorrichtung 18 mit der Abstreiferplatte 16 nach unten von der Führungsbüchse 12 weg ausrückt (siehe Fig. 2). Begrenzt wird die Ausrückbewegung der Haltevorrichtung 18 durch den Anschlagbolzen 30, der sich an das obere Ende der Nut 32 anlegt. Der ringförmige Teil 38 hält die Kipphebel 34 in ihrer geöffneten Stellung, damit diese das spätere Wieder-eindrücken der Haltevorrichtung nicht behindern.As soon as the holding lugs 36 release the wiper plate 16, release springs 54 via ejection bolts 56 ensure that the Holding device 18 with the stripper plate 16 down disengages from the guide bush 12 (see Fig. 2). Limited the disengaging movement of the holding device 18 by the stop pin 30, which is located at the upper end of the groove 32nd creates. The annular part 38 holds the rocker arm 34 in its open position, so that they push the later in again do not hinder the holding device.

Der Führungswulst 26 in der Haltevorrichtung 18 umfaßt die Abstreiferplatte 16 hufeisenförmig, d. h. nur über ihren halben Umfang, so daß sie in der ausgerückten Stellung der Haltevorrichtung 18 seitlich aus der Öffnung des hufeisenförmigen Führungswulsts 26, axial an dem Ende des einen, im Bereich der Öffnung angeordneten Kipphebels 34 vorbei herauszuziehen ist. Die Haltevorrichtung 18 muß wenigstens soweit aus der Führungsbüchse 12 ausrücken, daß die Abstreiferplatte 16 nicht mehr im Eingriffsbereich des Stanzstempels liegt. The guide bead 26 in the holding device 18 includes the Scraper plate 16 horseshoe-shaped, d. H. only over half of them Scope so that they are in the disengaged position of the Holding device 18 laterally from the opening of the horseshoe Guide bead 26, axially at the end of one, in Pull out the area of the opening arranged rocker arm 34 past is. The holding device 18 must at least be so far disengage from the guide bush 12 that the wiper plate 16 is no longer in the engagement area of the punch.

Nach dem Entfernen der Abstreiferplatte 16 kann dann auch dieser ausgebaut werden.After removing the stripper plate 16 can then also this will be expanded.

Der Zusammenbau des Stanzwerkzeugs 10 erfolgt sinngemäß in umgekehrter Richtung. Nach dem Einbau des Stanzstempels in die Führungsbüchse 12 wird die Abstreiferplatte 16 seitlich in den Führungswulst 26 der Haltevorrichtung 18 eingeschoben, bis sie in der Endstellung eine mit bezug auf die Führungsbüchse 12 zentrierte Lage einnimmt. Anschließend wird die Haltevorrichtung gegen die Kraft der Ausrückfedern 54 gegen die Führungsbüchse 12 geschoben. Beim Erreichen der endgültigen Position der Abstreiferplatte 16 schnappen die Kipphebel 34 durch die Kraft der Arretierfedern 42 mit ihren Haltenasen 36 in die Ringnut 24 der Abstreiferplatte 16 ein. Gleichzeitig drücken die Federn 48 die Sicherungsglieder 44 mit ihren Absätzen 46 unter die Kipphebel, so daß die Abstreiferplatte 16 verriegelt und gesichert ist.The punching tool 10 is assembled in accordance with FIG reverse direction. After installing the punch in the guide bushing 12 becomes the stripper plate 16 laterally inserted into the guide bead 26 of the holding device 18, until in the end position one with reference to the guide bush 12 centered position. Then the Holding device against the force of the release springs 54 against the guide sleeve 12 pushed. When you reach the final Position of the wiper plate 16 snap the rocker arm 34 by the force of the locking springs 42 with their retaining lugs 36 into the annular groove 24 of the wiper plate 16. At the same time, the springs 48 press the securing members 44 with its paragraphs 46 under the rocker arm, so that the wiper plate 16 is locked and secured.

Das automatische Einrasten der Verriegelungs- und Sicherungselemente vereinfacht die Handhabung des Werkzeuges erheblich. Prinzipiell wäre es auch denkbar, beispielsweise die Sicherungselente von Hand gesondert einzusetzen, wodurch man jedoch einen Teil des Zeitgewinns, den das Stanzwerkzeug 10 gegenüber bisher üblichen Stanzwerkzeugen bietet, wieder verlieren würde.The automatic locking of the locking and securing elements simplifies the handling of the tool considerably. In principle, it would also be conceivable, for example the security element to be used separately by hand, which however allows a portion of the time saved by the punch 10 previously available punching tools, lose again would.

Claims (8)

  1. Punching tool including a guide bushing (12) receiving a punch removable to the bottom in the punching direction and supporting a stripping plate (16) which by means of retaining elements to be mounted on the guide bushing (12) is fixable in the sphere of engagement of the punch, and after releasing of the retaining means the stripping plate (16) is free to be pulled off axially from the punch, said retaining means (34, 36) supported movably on the guide bushing (12) being movable between a first position arresting and a second position releasing said stripping plate (16), characterised in that the stripping plate is received by a movable holding device (18) which in the punching direction is releasable from the operating position for the stripping plate (16), in which the retaining elements (34, 36) arrest the stripping (16) together with the holding device (18), out of the sphere of engagement of the punch into a position, in which the stripping plate (16) is free to be removed laterally out of a guide (26) attached to the holding device centering the stripping plate (16) in relation to the guide bushing (12).
  2. Punching tool according to claim 1, characterised in that an elastic element (54) is provided to support the release movement of the holding device (18).
  3. Punching tool according to claim 1 or 2, characterised in that the retaining elements are formed as rocking leavers (34) with retaining protections (36), the stripping plate (16) being releasable by pressing down the rocking leavers (34) on one side against the force of an elastic element (42).
  4. Punching tool according to one of the preceding claims, characterised in that the retaining elements (34) are provided with safety means (44, 46) to avoid unintentional release thereof.
  5. Punching tool according to claim 4, characterised in that a shoulder (46) movably attached to the guide bushing (12) is shiftable below said side of the rocking leaver (34) to be pressed down.
  6. Punching tool according to claim 5, characterised in that an elastic element (48) is provided to keep the shoulder (46) in its position arresting the rocking leaver (34).
  7. Punching tool according to claim 5 or 6, characterised in that on the rocking leaver (34) a release member (50) is moveably supported, which at shifting of the safety means (44) drives the shoulder (46) into a position releasing the rocking leaver (34).
  8. Punching tool according to one of the preceding claims, characterised in that the retaining elements (34) engage from radially outwards a circular groove (24) in the peripheral surface of the stripping plate (16).
EP96115920A 1995-10-26 1996-10-04 Punching tool with holding means for stripper plate Expired - Lifetime EP0770437B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19539777 1995-10-26
DE19539777A DE19539777A1 (en) 1995-10-26 1995-10-26 Punching tool with holder for stripper plate

Publications (2)

Publication Number Publication Date
EP0770437A1 EP0770437A1 (en) 1997-05-02
EP0770437B1 true EP0770437B1 (en) 2001-06-20

Family

ID=7775773

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96115920A Expired - Lifetime EP0770437B1 (en) 1995-10-26 1996-10-04 Punching tool with holding means for stripper plate

Country Status (3)

Country Link
EP (1) EP0770437B1 (en)
AT (1) ATE202303T1 (en)
DE (2) DE19539777A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6895849B2 (en) * 2002-06-07 2005-05-24 Wilson Tool International, Inc. Stripper plate retention system
JP4713879B2 (en) * 2004-12-15 2011-06-29 株式会社アマダ Punch mold assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248111A (en) * 1979-07-16 1981-02-03 Wilson Tool Company Punch guide assembly
DE3005613C2 (en) * 1980-02-15 1984-06-20 C. Behrens Ag, 3220 Alfeld Device for exchangeable mounting of a scraper on the tool carrier of a tool for non-cutting shaping
JP2636127B2 (en) * 1993-02-03 1997-07-30 株式会社アマダメトレックス Punching mold
JP2611119B2 (en) * 1993-06-07 1997-05-21 株式会社アマダメトレックス Punching mold
EP0640417B1 (en) * 1993-07-30 1997-12-29 Amada Metrecs Company, Limited Upper tool for a press

Also Published As

Publication number Publication date
ATE202303T1 (en) 2001-07-15
DE19539777A1 (en) 1997-04-30
DE59607125D1 (en) 2001-07-26
EP0770437A1 (en) 1997-05-02

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