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EP0523327A1 - Apparatus for removing cut-out parts, such as scrap parts, from a sheet containing cut-outs or the equivalent - Google Patents

Apparatus for removing cut-out parts, such as scrap parts, from a sheet containing cut-outs or the equivalent Download PDF

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Publication number
EP0523327A1
EP0523327A1 EP92106351A EP92106351A EP0523327A1 EP 0523327 A1 EP0523327 A1 EP 0523327A1 EP 92106351 A EP92106351 A EP 92106351A EP 92106351 A EP92106351 A EP 92106351A EP 0523327 A1 EP0523327 A1 EP 0523327A1
Authority
EP
European Patent Office
Prior art keywords
stripping
tip
tool
narrow side
vertical
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
EP92106351A
Other languages
German (de)
French (fr)
Other versions
EP0523327B1 (en
Inventor
Rolf Sinn
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.)
Karl Marbach GmbH and Co KG
Original Assignee
Karl Marbach 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
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Application filed by Karl Marbach GmbH and Co KG filed Critical Karl Marbach GmbH and Co KG
Publication of EP0523327A1 publication Critical patent/EP0523327A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1818—Means for removing cut-out material or waste by pushing out
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/307—Combined with preliminary weakener or with nonbreaking cutter
    • Y10T225/321—Preliminary weakener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool
    • Y10T225/379—Breaking tool intermediate spaced work supports

Definitions

  • the invention relates to a device for removing stripped parts, such as pieces of waste, from a sheet of material containing blanks or the like.
  • the device has a carrier plate for the sheet of material, in which openings are provided. Each stripping part spans the associated breakthrough. The edge-side contact surfaces of each stripping part are arranged essentially plane or axially symmetrical with respect to the associated opening.
  • a tool holding plate which can be moved vertically towards and away from the carrier plate is provided, on which stripping tools projecting towards the carrier plate are attached, which consist of rectangular pieces of steel strip with vertical and horizontal narrow sides.
  • Each stripping tool is arranged essentially vertically to the assigned stripping part and symmetrically with respect to the contact surfaces of the assigned stripping part.
  • the object on which the invention is based is therefore to design the device of the generic type in such a way that safe and reliable knocking out and removal of the knockout parts is ensured with a simple construction.
  • the stripping tool made of steel strip has at least one tip on the carrier plate side, that the tip is arranged in the middle of one vertical narrow side of the steel stripping tool and that the angle between the vertical narrow side having the tip and that extending from the tip the adjoining horizontal narrow side of the stripping tool made of steel strip, which faces the carrier plate, is 20 ° to 50 ° in its narrow side center plane.
  • This angle is advantageously 25 ° to 40 °.
  • An angle of 30 ° is preferred.
  • the device according to the invention is simple in construction. It only requires the configuration of a tip in the manner according to the invention at the end of a narrow side of a known steel stripping tool. Due to the design of the tip according to the invention, if the break-out part bends when it is pressed into the opening, it cannot slide off, so that scratching and piercing is ensured. As a result, the break-out part is bulged elastically in the opening. After leaving the breakthrough, it spontaneously resumes its original flat shape due to the elastic restoring forces, whereby it is thrown off safely from the tip. There is therefore no need for stripping elements in the carrier plate.
  • the surface extending from the tip to the horizontal narrow side of the stripping tool on the support plate side has the shape of an isosceles triangle, the tip angle of which is 30 ° to 90 °, preferably 60 °.
  • the grinding can be provided so that inclined flanks are formed laterally from this surface up to the height of the horizontal narrow side. However, it is also possible to let the corresponding bevel run along the vertical narrow side, so that it forms a sharp edge starting from the tip.
  • the vertical distance of the tip from the adjacent horizontal narrow side of the steel stripping tool is usually 0.5 to 2.5 mm, preferably 1.5 mm.
  • the stripping tool made of steel strip, which can consist, for example, of a part formed from the steel strip by cutting and bending or by pressing out.
  • a positionally secure attachment with respect to the tool holding plate is ensured if a fixing flange made of steel strip is attached at an angle of 90 ° along a vertical narrow side to the end of the strip steel stripping tool on the tool holder plate side, which can also be produced by correspondingly bending the steel strip.
  • the fixing flange also enables the stripping tool to be held securely in the tool holding plate.
  • the openings to the support surface of the support plate have continuous vertical walls, which greatly simplifies the manufacture of the support plate.
  • a horizontal distance between the vertical narrow side of the stripping tool made of band steel and the associated vertically continuous inner wall of the opening in the order of 2 to 10 times the material thickness has proven to be particularly advantageous . In practice, this is usually 2 to 5 mm.
  • the device shown in Fig. 1 has a horizontal tool holding plate 15 and at a distance from it a horizontally arranged support plate 12, from which a sheet of material 11 made of paper or cardboard is arranged in a fixed position, which previously in a punching and creasing device, not shown, for the production of blanks has been processed, with a break-out part 10 being cut out along its circumference along cut edges 30 and held over small holding points 31, which are shown oversized in FIG. 2.
  • the break-out part 10 is arranged via a continuous vertical opening 25 having opening 13 in the carrier plate 12 so that it rests with bearing surfaces 14 on the side of the holding pieces 31 on the carrier plate 12, but the opening 13 on the other two sides is larger than that Transverse extension of the stripping part 10.
  • a stripping tool 17 made of strip steel is fixed in the tool holding plate 15.
  • the exact position of the stripping tool 17 is fixed in that it has a fixing flange 24 fixed at right angles to it in its section on the tool holder plate side. This positional accuracy is achieved in that the incisions to be provided for fixing the stripping tool 17 in the tool holding plate 15 are usually carried out using laser technology.
  • the stripping tool 17 made of strip steel has vertical narrow sides 18 and horizontal narrow sides 19, with one horizontal narrow side 19 being aligned with the rear of the tool holding plate 15 after assembly.
  • a stop 23 is also attached to the stripping tool 17 and engages with the surface of the tool holding plate 15 facing the carrier plate 12. The stop 23 can be cut and bent of strip steel material of the stripping tool 17 are formed. The stop 23 contributes to the precise positioning of the stripping tool 17 and prevents the stripping tool 17 from being pressed through the tool holding plate 15 during operation.
  • each stripping tool has a tip 20 in the middle at the end of the one vertical narrow side 18 of the stripping tool 17 made of strip steel.
  • This tip 20 passes over an inclined surface 21 into the horizontal narrow side 19.
  • the angle ⁇ between the inclined surface 21 and the vertical narrow side 18 in the exemplary embodiment shown is 30 ° projected onto the narrow side center plane 32.
  • the inclined surface 21 has the shape of an isosceles triangle with two equal base angles and an apex angle ⁇ , which in the exemplary embodiment shown is 45 °.
  • the distance between the horizontal narrow side 19 and the tip 20 of the stripping tool 17 made of steel strip is provided with the reference symbol 22 and is 0.5 to 2 times the material thickness.
  • the tip 20 is formed such that oblique flanks extend from the inclined surface 21 to the horizontal narrow side 19 and the vertical narrow side 18. 6 and 7, these flanks are omitted, so that the narrow side 18 is a sharp edge which ends in the tip 20.
  • the stripping tools 17 are designed depending on the stripping part 17 to be stripped so that a symmetrical stripping force is exerted on the stripping part 10, which is also symmetrical with respect to the breakpoints 31.
  • the stripping tool 17 is arranged such that its narrow side center plane 32 (FIG. 7) coincides with the connecting plane of the two opposite stopping points 31 and the distance to these stopping points 31 and to the vertical continuous wall 25 of the associated opening 13 has an equal distance.
  • This distance is designated by 26 in FIG. 8. It is 3 to 10 times the material thickness.
  • the stripping tool 17 shown in FIGS. 8 and 9 has two tips 20, which is also shown in FIGS. 1 to 3, one at the end of the vertical narrow side 18.
  • the tips 20 of the stripping tool 17 drill into the stripping part 10 when it is moved in the direction of the double arrow 16 with its associated tool holding plate 15 toward the carrier plate 12. Due to their design, slipping of the tips 20 is not possible.
  • the breakpoints 31 break and the stripping part 10 bulges downward and is pushed through the opening 13 with its continuously vertical walls 25.
  • the restoring forces cause the break-out part 10 to snap back into its essentially flat starting form, as a result of which the break-out part 10 is thrown off from the tips 20 and below it Influence of gravity falls down.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Details Of Cutting Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Punching Or Piercing (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The device for removing cut-out parts from a sheet of material (11) has a supporting plate (12) for the sheets of material (11), in which supporting plate (12) openings (13) with continuous vertical walls (25) are provided. Each cut-out part (10) overhangs the associated opening (13) and rests on the supporting plate (12) with edge supporting surfaces (14). Cutting-out tools (17) made of a steel strip with vertical and horizontal narrow sides (18, 19) are arranged on a tool holding plate (15), which is movable to the supporting plate (12) and away from it, in such a way that they are arranged essentially perpendicular to the assigned cut-out part (10) and symmetrically in relation to the supporting surfaces (14). Each cutting-out tool (17) made of a steel strip has at least one point (20) on the supporting plate side forming the end of one vertical narrow side (18). The angle ( alpha ) between the point (20) and the surface (21) extending from it to the adjacent horizontal narrow side (19) facing the supporting plate (12) projected into the central plane of the narrow side (32) amounts to 20 DEG to 50 DEG . <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Entfernen von Ausbrechteilen, wie Abfallstücken, aus einem Zuschnitte oder dergleichen enthaltenden Werkstoffbogen. Die Vorrichtung hat eine Trägerplatte für den Werkstoffbogen, in welcher Durchbrüche vorgesehen sind. Jedes Ausbrechteil überspannt den zugehörigen Durchbruch. Die randseitigen Auflageflächen jedes Ausbrechteils sind im wesentlichen ebenen- oder achssymmetrisch bezüglich des zugehörigen Durchbruchs angeordnet. Ferner ist eine vertikal zur Trägerplatte hin und von ihr weg bewegbare Werkzeughalteplatte vorgesehen, an der zur Trägerplatte hin vorstehende Ausbrechwerkzeuge angebracht sind, die aus rechteckigen Stücken aus Bandstahl mit vertikalen und horizontalen Schmalseiten bestehen. Jedes Ausbrechwerkzeug ist dabei im wesentlichen vertikal zum zugeordneten Ausbrechteil und symmetrisch bezüglich der Auflageflächen des zugeordneten Ausbrechteils angeordnet.The invention relates to a device for removing stripped parts, such as pieces of waste, from a sheet of material containing blanks or the like. The device has a carrier plate for the sheet of material, in which openings are provided. Each stripping part spans the associated breakthrough. The edge-side contact surfaces of each stripping part are arranged essentially plane or axially symmetrical with respect to the associated opening. Furthermore, a tool holding plate which can be moved vertically towards and away from the carrier plate is provided, on which stripping tools projecting towards the carrier plate are attached, which consist of rectangular pieces of steel strip with vertical and horizontal narrow sides. Each stripping tool is arranged essentially vertically to the assigned stripping part and symmetrically with respect to the contact surfaces of the assigned stripping part.

Eine solche Vorrichtung ist in dem DE-GM-90 03 329.9 (Fig. 1 und 2) beschrieben.Such a device is described in DE-GM-90 03 329.9 (Fig. 1 and 2).

Es hat sich gezeigt, daß mit einer derart ausgestalteten Vorrichtung nicht alle Ausbrechteile zuverlässig entfernt werden können, da es vorkommt, daß ein Haltepunkt beim Ausbrechvorgang nicht abreißt und das Ausbrechwerkzeug das Ausbrechteil lediglich schräg nach unten in den Durchbruch in der Trägerplatte drückt, während es beim Weitertransport des Werkstoffbogens wieder aus dem Durchbruch herausgezogen wird.It has been shown that not all stripping parts can be reliably removed with a device designed in this way, since it happens that a breakpoint does not tear off during the stripping process and the stripping tool only presses the stripping part obliquely downward into the opening in the carrier plate, while it is at Further transport of the material sheet is pulled out of the opening.

Um dies zu vermeiden, wird in dem DE-GM-90 03 329.9 vorgeschlagen, rotationssymmetrische Stifte mit Spitzen als Ausbrechwerkzeuge zu verwenden und den Durchbrüchen in deren Innenraum vorstehende elastische Widerlager zuzuordnen. Wenn sich die Spitzen der Stifte in das zugeordnete Ausbrechteil bohren und dieses nach unten in den zugehörigen Durchbruch drücken, wird durch das Ausbrechteil gleichzeitig das elastische Widerlager nach unten gedrückt, das dann bei der Rückkehr des Ausbrechstiftes in seine Ruhestellung das Ausbrechteil abstreift. Es hat sich gezeigt, daß die elastischen Widerlager sehr verschleißanfällig sind und ein häufiges Auswechseln erfordern. Außerdem wird aufgrund der Anordnung der Widerlager der Aufbau der Trägerplatte kompliziert. Zudem ist die Herstellung der rotationssymmetrischen Ausbrechstifte mit Spitze relativ aufwendig.In order to avoid this, it is proposed in DE-GM-90 03 329.9 to use rotationally symmetrical pins with tips as stripping tools and to assign the resilient abutments protruding in the interior thereof. If the tips of the pins drill into the assigned break-out part and press it down into the associated opening, the elastic abutment is simultaneously pressed down by the break-out part, which then strips off the break-out part when the break-out pin returns to its rest position. It has been shown that the elastic abutments are very susceptible to wear and require frequent replacement. In addition, the structure of the support plate is complicated due to the arrangement of the abutments. In addition, the manufacture of the rotationally symmetrical stripping pins with a tip is relatively complex.

Die der Erfindung zugrundeliegende Aufgabe besteht deshalb darin, die Vorrichtung der gattungsgemäßen Art so auszubilden, daß bei einfacher Bauweise ein sicheres und zuverlässiges Ausbrechen und Abführen der Ausbrechteile gewährleistet ist.The object on which the invention is based is therefore to design the device of the generic type in such a way that safe and reliable knocking out and removal of the knockout parts is ensured with a simple construction.

Diese Aufgabe wird ausgehend von der Vorrichtung der eingangs genannten Art dadurch gelöst, daß das Ausbrechwerkzeug aus Bandstahl trägerplattenseitig wenigstens eine Spitze aufweist, daß die Spitze in der Mitte der einen vertikalen Schmalseite des Ausbrechwerkzeugs aus Bandstahl angeordnet ist und daß der Winkel zwischen der die Spitze aufweisenden vertikalen Schmalseite und der sich von der Spitze zu der angrenzenden, der Trägerplatte zugewandten horizontalen Schmalseite des Ausbrechwerkzeugs aus Bandstahl erstreckenden Fläche in dessen Schmalseitenmittenebene 20° bis 50° beträgt. Vorteilhafterweise beträgt dieser Winkel 25° bis 40°. Bevorzugt wird ein Winkel von 30°.This task is based on the device of the beginning mentioned type in that the stripping tool made of steel strip has at least one tip on the carrier plate side, that the tip is arranged in the middle of one vertical narrow side of the steel stripping tool and that the angle between the vertical narrow side having the tip and that extending from the tip the adjoining horizontal narrow side of the stripping tool made of steel strip, which faces the carrier plate, is 20 ° to 50 ° in its narrow side center plane. This angle is advantageously 25 ° to 40 °. An angle of 30 ° is preferred.

Die erfindungsgemäße Vorrichtung ist einfach im Aufbau. Sie erfordert lediglich die Ausgestaltung einer Spitze in der erfindungsgemäßen Weise am Ende einer Schmalseite eines an sich bekannten Ausbrechwerkzeugs aus Bandstahl. Aufgrund der erfindungsgemäßen Ausgestaltung der Spitze kann diese, wenn sich das Ausbrechteil beim Eindrücken in den Durchbruch krümmt, nicht abrutschen, so daß ein Einritzen und Einstechen gewährleistet ist. Dadurch wird in dem Durchbruch das Ausbrechteil elastisch ausgebeult. Nach Verlassen des Durchbruchs nimmt dieses aufgrund der elastischen Rückstellkräfte spontan die ursprüngliche flache Form wieder an, wobei es von der Spitze sicher abgeschleudert wird. Es bedarf somit keiner Abstreifelemente in der Trägerplatte.The device according to the invention is simple in construction. It only requires the configuration of a tip in the manner according to the invention at the end of a narrow side of a known steel stripping tool. Due to the design of the tip according to the invention, if the break-out part bends when it is pressed into the opening, it cannot slide off, so that scratching and piercing is ensured. As a result, the break-out part is bulged elastically in the opening. After leaving the breakthrough, it spontaneously resumes its original flat shape due to the elastic restoring forces, whereby it is thrown off safely from the tip. There is therefore no need for stripping elements in the carrier plate.

Diese Wirkung wird dann noch gesteigert, wenn die sich von der Spitze zu der trägerplattenseitigen horizontalen Schmalseite des Ausbrechwerkzeugs aus Bandstahl erstreckende Fläche die Form eines gleichschenkligen Dreiecks hat, dessen Spitzenwinkel 30° bis 90°, vorzugsweise 60° beträgt. Dabei kann der Zuschliff so vorgesehen werden, daß seitlich von dieser Fläche bis zur Höhe der horizontalen Schmalseite gehende schräge Flanken ausgebildet sind. Es ist jedoch auch möglich, die entsprechende Abschrägung längs der vertikalen Schmalseite verlaufen zu lassen, so daß diese ausgehend von der Spitze eine scharfe Kante bildet.This effect is further increased if the surface extending from the tip to the horizontal narrow side of the stripping tool on the support plate side has the shape of an isosceles triangle, the tip angle of which is 30 ° to 90 °, preferably 60 °. The grinding can be provided so that inclined flanks are formed laterally from this surface up to the height of the horizontal narrow side. However, it is also possible to let the corresponding bevel run along the vertical narrow side, so that it forms a sharp edge starting from the tip.

Bei für übliche Zuschnitte von Schachteln und Kartons verwendeten Papier- und Pappematerialien beträgt der vertikale Abstand der Spitze von der angrenzenden horizontalen Schmalseite des Ausbrechwerkzeugs aus Bandstahl gewöhnlich 0,5 bis 2,5 mm, vorzugsweise 1,5 mm.In the case of paper and cardboard materials used for customary cuts of boxes and cartons, the vertical distance of the tip from the adjacent horizontal narrow side of the steel stripping tool is usually 0.5 to 2.5 mm, preferably 1.5 mm.

Zur Vereinfachung der Montage und zur Positionsgewährleistung während des Betriebs ist am Ausbrechwerkzeug aus Bandstahl ein mit der Werkzeughalteplatte in Eingriff kommender Anschlag vorgesehen, der beispielsweise aus einem aus dem Bandstahl durch Einschneiden und Ausbiegen oder durch Ausdrücken entstehenden Teil bestehen kann.In order to simplify assembly and to guarantee the position during operation, a stop which comes into engagement with the tool holding plate is provided on the stripping tool made of steel strip, which can consist, for example, of a part formed from the steel strip by cutting and bending or by pressing out.

Eine bezüglich der Werkzeughalteplatte positionssichere Anbringung ist dann gewährleistet, wenn am werkzeughalteplattenseitigen Ende des Ausbrechwerkzeugs aus Bandstahl längs einer vertikalen Schmalseite ein Fixierungsflansch aus Bandstahl in einem Winkel von 90° angebracht ist, der auch durch entsprechendes Biegen des Bandstahls hergestellt werden kann. Der Fixierungsflansch ermöglicht auch eine stabile Halterung des Ausbrechwerkzeugs in der Werkzeughalteplatte.A positionally secure attachment with respect to the tool holding plate is ensured if a fixing flange made of steel strip is attached at an angle of 90 ° along a vertical narrow side to the end of the strip steel stripping tool on the tool holder plate side, which can also be produced by correspondingly bending the steel strip. The fixing flange also enables the stripping tool to be held securely in the tool holding plate.

Bei der erfindungsgemäßen Vorrichtung weisen die Durchbrüche zur Auflagefläche der Trägerplatte durchgehende vertikale Wände auf, was die Herstellung der Trägerplatte stark vereinfacht.In the device according to the invention, the openings to the support surface of the support plate have continuous vertical walls, which greatly simplifies the manufacture of the support plate.

Für die vorstehend genannten, üblicherweise verwendeten Papier- und Pappematerialien hat sich ein horizontaler Abstand zwischen der die Spitze aufweisenden vertikalen Schmalseite des Ausbrechwerkzeugs aus Bandstahl und der zugeordneten vertikal durchgehenden Innenwand des Durchbruchs in der Größenordnung vom 2 bis 10-fachen der Materialdicke als besonders vorteilhaft erwiesen. Das sind in der Praxis gewöhnlich 2 bis 5 mm.For the above-mentioned, commonly used paper and cardboard materials, a horizontal distance between the vertical narrow side of the stripping tool made of band steel and the associated vertically continuous inner wall of the opening in the order of 2 to 10 times the material thickness has proven to be particularly advantageous . In practice, this is usually 2 to 5 mm.

Anhand von Zeichnungen werden Ausführungsbeispiele der Erfindung näher erläutert. Es zeigt:

Fig. 1
schematisch die Vorrichtung in einer Teilansicht im Längsschnitt
Fig. 2
eine Draufsicht auf die Trägerplatte von Fig. 1
Fig. 3
in einer Ansicht wie Fig. 1 die Trägerplatte mit teilweise abgesenktem Ausbrechwerkzeug
Fig. 4
ein Ausbrechwerkzeug mit einer Spitze in der Seitenansicht
Fig. 5
eine Draufsicht auf das Ausbrechwerkzeug von Fig. 4
Fig. 6
ein gegenüber Fig. 4 modifiziertes Ausbrechwerkzeug
Fig. 7
eine Draufsicht auf das Ausbrechwerkzeug von Fig. 6
Fig. 8
vergrößert in einer Einzelheit die Beziehung zwischen dem Ausbrechwerkzeug und der Wand des Durchbruchs in der Trägerplatte und
Fig. 9
eine Unteransicht des Ausbrechwerkzeugs von Fig. 8.
Exemplary embodiments of the invention are explained in more detail with reference to drawings. It shows:
Fig. 1
schematically the device in a partial view in longitudinal section
Fig. 2
2 shows a top view of the carrier plate from FIG. 1
Fig. 3
in a view like Fig. 1, the carrier plate with a partially lowered stripping tool
Fig. 4
a stripping tool with a tip in side view
Fig. 5
4 shows a plan view of the stripping tool from FIG. 4
Fig. 6
a stripping tool modified compared to FIG. 4
Fig. 7
6 shows a plan view of the stripping tool from FIG. 6
Fig. 8
enlarges in detail the relationship between the stripping tool and the wall of the opening in the support plate and
Fig. 9
8 shows a bottom view of the stripping tool from FIG. 8.

Die in Fig. 1 gezeigte Vorrichtung weist eine horizontale Werkzeughalteplatte 15 und im Abstand davon eine horizontal angeordnete Trägerplatte 12 auf, aus der ein Werkstoffbogen 11 aus Papier oder Pappe lagefixiert angeordnet ist, der vorher in einer nicht gezeigten Stanz- und Rilleinrichtung zur Herstellung von Zuschnitten bearbeitet worden ist, wobei ein Ausbrechteil 10 an seinem Umfang längs Schnittkanten 30 ausgeschnitten und über kleine Haltepunkte 31, die in Fig. 2 übergroß dargestellt sind, gehalten ist. Das Ausbrechteil 10 ist über einen durchgehend vertikale Wände 25 aufweisenden Durchbruch 13 in der Trägerplatte 12 so angeordnet, daß es mit Auflageflächen 14 an der Seite der Haltestücke 31 auf der Trägerplatte 12 aufliegt, an den beiden anderen Seiten der Durchbruch 13 jedoch größer ist als die Quererstreckung des Ausbrechteils 10.The device shown in Fig. 1 has a horizontal tool holding plate 15 and at a distance from it a horizontally arranged support plate 12, from which a sheet of material 11 made of paper or cardboard is arranged in a fixed position, which previously in a punching and creasing device, not shown, for the production of blanks has been processed, with a break-out part 10 being cut out along its circumference along cut edges 30 and held over small holding points 31, which are shown oversized in FIG. 2. The break-out part 10 is arranged via a continuous vertical opening 25 having opening 13 in the carrier plate 12 so that it rests with bearing surfaces 14 on the side of the holding pieces 31 on the carrier plate 12, but the opening 13 on the other two sides is larger than that Transverse extension of the stripping part 10.

In der Werkzeughalteplatte 15 ist ein Ausbrechwerkzeug 17 aus Bandstahl festgelegt. Die genaue Position des Ausbrechwerkzeugs 17 ist dadurch fixiert, daß dieses in seinem werkzeughalteplattenseitigen Abschnitt einen rechtwinklig an ihr festgelegten Fixierungsflansch 24 hat. Diese Positionsgenauigkeit wird dadurch erreicht, daß die für die Fixierung des Ausbrechwerkzeugs 17 in der Werkzeughalteplatte 15 vorzusehenden Einschnitte gewöhnlich mit Lasertechnik ausgeführt werden. Das Ausbrechwerkzeug 17 aus Bandstahl hat vertikale Schmalseiten 18 und horizontale Schmalseiten 19, wobei nach der Montage die eine horizontale Schmalseite 19 mit der Rückseite der Werkzeughalteplatte 15 fluchtet. An dem Ausbrechwerkzeug 17 ist ferner ein Anschlag 23 angebracht, der mit der der Trägerplatte 12 zugewandten Fläche der Werkzeughalteplatte 15 in Eingriff steht. Der Anschlag 23 kann durch Einschneiden und Ausbiegen von Bandstahlmaterial des Ausbrechwerkzeugs 17 geformt werden. Der Anschlag 23 trägt einerseits zur höhengenauen Positionierung des Ausbrechwerkzeugs 17 bei und verhindert, daß während des Betriebs das Ausbrechwerkzeug 17 durch die Werkzeughalteplatte 15 hindurchgedrückt wird.A stripping tool 17 made of strip steel is fixed in the tool holding plate 15. The exact position of the stripping tool 17 is fixed in that it has a fixing flange 24 fixed at right angles to it in its section on the tool holder plate side. This positional accuracy is achieved in that the incisions to be provided for fixing the stripping tool 17 in the tool holding plate 15 are usually carried out using laser technology. The stripping tool 17 made of strip steel has vertical narrow sides 18 and horizontal narrow sides 19, with one horizontal narrow side 19 being aligned with the rear of the tool holding plate 15 after assembly. A stop 23 is also attached to the stripping tool 17 and engages with the surface of the tool holding plate 15 facing the carrier plate 12. The stop 23 can be cut and bent of strip steel material of the stripping tool 17 are formed. The stop 23 contributes to the precise positioning of the stripping tool 17 and prevents the stripping tool 17 from being pressed through the tool holding plate 15 during operation.

Wie aus den Figuren 4 bis 7 zu ersehen ist, hat jedes Ausbrechwerkzeug eine Spitze 20 in der Mitte am Ende der einen vertikalen Schmalseite 18 des Ausbrechwerkzeugs 17 aus Bandstahl. Diese Spitze 20 geht über eine geneigte Fläche 21 in die horizontale Schmalseite 19 über. Der Winkel α zwischen der geneigten Fläche 21 und der vertikalen Schmalseite 18 beträgt bei dem gezeigten Ausführungsbeispiel projiziert auf die Schmalseitenmittenebene 32 30°. Wie aus Fig. 5 zu ersehen ist, hat die geneigte Fläche 21 die Form eines gleichschenkligen Dreiecks mit zwei gleichen Basiswinkeln und einem Spitzenwinkel β, der bei dem gezeigten Ausführungsbeispiel 45° beträgt. Der Abstand zwischen der horizontalen Schmalseite 19 und der Spitze 20 des Ausbrechwerkzeugs 17 aus Bandstahl ist mit dem Bezugszeichen 22 versehen und beträgt das 0,5 bis 2-fache der Materialdicke.As can be seen from FIGS. 4 to 7, each stripping tool has a tip 20 in the middle at the end of the one vertical narrow side 18 of the stripping tool 17 made of strip steel. This tip 20 passes over an inclined surface 21 into the horizontal narrow side 19. The angle α between the inclined surface 21 and the vertical narrow side 18 in the exemplary embodiment shown is 30 ° projected onto the narrow side center plane 32. As can be seen from FIG. 5, the inclined surface 21 has the shape of an isosceles triangle with two equal base angles and an apex angle β, which in the exemplary embodiment shown is 45 °. The distance between the horizontal narrow side 19 and the tip 20 of the stripping tool 17 made of steel strip is provided with the reference symbol 22 and is 0.5 to 2 times the material thickness.

Bei der Ausführung gemäß Fig. 4 und 5 ist die Spitze 20 so ausgebildet, daß sich von der geneigten Fläche 21 schräge Flanken zur horizontalen Schmalseite 19 und der vertikalen Schmalseite 18 hin erstrecken. Bei der Ausgestaltung der Figuren 6 und 7 entfallen diese Flanken, so daß die Schmalseite 18 eine scharfe Kante ist, die in der Spitze 20 ausläuft.4 and 5, the tip 20 is formed such that oblique flanks extend from the inclined surface 21 to the horizontal narrow side 19 and the vertical narrow side 18. 6 and 7, these flanks are omitted, so that the narrow side 18 is a sharp edge which ends in the tip 20.

Die Ausbrechwerkzeuge 17 werden abhängig von dem auszubrechenden Ausbrechteil 17 so gestaltet, daß auf das Ausbrechteil 10 eine symmetrische Ausbrechkraft ausgeübt wird, die auch symmetrisch bezüglich der Haltepunkte 31 ist.The stripping tools 17 are designed depending on the stripping part 17 to be stripped so that a symmetrical stripping force is exerted on the stripping part 10, which is also symmetrical with respect to the breakpoints 31.

Für das in den Figuren 1 und 2 gezeigte rechteckige Ausbrechteil 10 wird das Ausbrechwerkzeug 17 so angeordnet, daß seine Schmalseitenmittenebene 32 (Fig. 7) mit der Verbindungsebene der beiden gegenüberliegenden Haltepunkte 31 zusammenfällt und der Abstand zu diesen Haltepunkten 31 und zu der vertikal durchgehenden Wand 25 des zugehörigen Durchbruchs 13 einen gleichen Abstand hat. Dieser Abstand ist in Fig. 8 mit 26 bezeichnet. Er beträgt das 3 bis 10-fache der Materialdicke.For the rectangular stripping part 10 shown in FIGS. 1 and 2, the stripping tool 17 is arranged such that its narrow side center plane 32 (FIG. 7) coincides with the connecting plane of the two opposite stopping points 31 and the distance to these stopping points 31 and to the vertical continuous wall 25 of the associated opening 13 has an equal distance. This distance is designated by 26 in FIG. 8. It is 3 to 10 times the material thickness.

Das in Fig. 8 und 9 gezeigte Ausbrechwerkzeug 17 hat zwei Spitzen 20, was auch in den Figuren 1 bis 3 gezeigt ist, und zwar jeweils eine am Ende der vertikalen Schmalseite 18.The stripping tool 17 shown in FIGS. 8 and 9 has two tips 20, which is also shown in FIGS. 1 to 3, one at the end of the vertical narrow side 18.

Wie aus Fig. 3 zu ersehen ist, bohren sich die Spitzen 20 des Ausbrechwerkzeugs 17, wenn dieses in Richtung des Doppelpfeils 16 mit seiner zugehörigen Werkzeughalteplatte 15 zur Trägerplatte 12 hin bewegt wird, in das Ausbrechteil 10 ein. Aufgrund ihrer Ausgestaltung ist ein Abrutschen der Spitzen 20 nicht möglich. Die Haltepunkte 31 brechen dabei und das Ausbrechteil 10 wird nach unten ausgebeult und durch den Durchbruch 13 mit seinen durchgehend vertikalen Wänden 25 hindurchgedrückt. Wenn die seitlich an den vertikal durchgehenden Wänden 25 des Durchbruchs 13 anliegenden Ränder des Ausbrechteils 10 aus dem Durchbruch 13 austreten, lassen die Rückstellkräfte das Ausbrechteil 10 in seine im wesentlichen ebene Ausgangsform zurückschnellen, wodurch das Ausbrechteil 10 von den Spitzen 20 abgeschleudert wird und unter dem Einfluß der Schwerkraft nach unten fällt.As can be seen from FIG. 3, the tips 20 of the stripping tool 17 drill into the stripping part 10 when it is moved in the direction of the double arrow 16 with its associated tool holding plate 15 toward the carrier plate 12. Due to their design, slipping of the tips 20 is not possible. The breakpoints 31 break and the stripping part 10 bulges downward and is pushed through the opening 13 with its continuously vertical walls 25. When the edges of the break-out part 10, which laterally abut against the vertical continuous walls 25 of the opening 13, emerge from the break-through 13, the restoring forces cause the break-out part 10 to snap back into its essentially flat starting form, as a result of which the break-out part 10 is thrown off from the tips 20 and below it Influence of gravity falls down.

Claims (11)

Vorrichtung zum Entfernen von Ausbrechteilen (10), wie Abfallstücken, aus einem Zuschnitte oder dergleichen enthaltenden Werkstoffbogen (11) - mit einer Trägerplatte (12) für den Werkstoffbogen (11), - mit Durchbrüchen (13) in der Trägerplatte (12) - wobei jedes Ausbrechteil (10) den zugehörigen Durchbruch (13) überspannt und seine randseitigen Auflageflächen (14) im wesentlichen ebenen- oder achssymmetrisch bezüglich des Durchbruchs (13) vorgesehen sind - mit einer vertikal zur Trägerplatte (12) hin und von ihr weg bewegbaren Werkzeughalteplatte (15) und - mit an der Werkzeughalteplatte (15) angebrachten, zur Trägerplatte (12) hin vorstehenden Ausbrechwerkzeugen (17) aus Bandstahl mit vertikalen und horizontalen Schmalseiten (18, 19), - wobei jedes Ausbrechwerkzeug (17) im wesentlichen vertikal zum zugeordneten Ausbrechteil (10) und symmetrisch bezüglich der Auflagefläche (14) des zugeordneten Ausbrechteils (10) angeordnet ist, dadurch gekennzeichnet, - daß das Ausbrechwerkzeug (17) aus Bandstahl trägerplattenseitig wenigstens eine Spitze (20) aufweist, - daß die Spitze (20) in der Mitte der einen vertikalen Schmalseite (18) des Ausbrechwerkzeugs (17) aus Bandstahl angeordnet ist und - daß der Winkel (a) zwischen der die Spitze (20) aufweisenden vertikalen Schmalseite (18) und der sich von der Spitze (20) zu der angrenzenden, der Trägerplatte (12) zugewandten horizontalen Schmalseite (19) des Ausbrechwerkzeugs (17) aus Bandstahl erstreckenden Fläche (21) in dessen Schmalseitenmittenebene (32) 20° bis 50° beträgt. Device for removing stripped parts (10), such as pieces of waste, from a sheet of material (11) containing blanks or the like - With a carrier plate (12) for the material sheet (11), - With openings (13) in the carrier plate (12) - Wherein each stripping part (10) spans the associated opening (13) and its edge-side bearing surfaces (14) are provided substantially plane or axially symmetrical with respect to the opening (13) - With a vertically to the carrier plate (12) and away from it movable tool holder plate (15) and - With stripping tools (17) made of steel strip with vertical and horizontal narrow sides (18, 19) attached to the tool holding plate (15) and projecting towards the carrier plate (12), - wherein each stripping tool (17) is arranged essentially vertically to the associated stripping part (10) and symmetrically with respect to the bearing surface (14) of the assigned stripping part (10), characterized by - That the stripping tool (17) made of steel strip has at least one tip (20) on the carrier plate side, - That the tip (20) is arranged in the middle of a vertical narrow side (18) of the stripping tool (17) made of steel strip and - That the angle (a) between the tip (20) having vertical narrow side (18) and from the tip (20) to the adjacent, the support plate (12) facing horizontal narrow side (19) of the stripping tool (17) Strip steel extending Area (21) in its narrow side center plane (32) is 20 ° to 50 °. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Winkel (α) 25° bis 40° beträgt.Device according to claim 1, characterized in that the angle (α) is 25 ° to 40 °. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Winkel (α) 30° beträgt.Device according to claim 2, characterized in that the angle (α) is 30 °. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die sich von der Spitze (20) zu der trägerplattenseitigen horizontalen Schmalseite (19) des Ausbrechwerkzeugs (17) aus Bandstahl erstreckende Fläche (21) die Form eines gleichschenkligen Dreiecks hat, dessen Spitzenwinkel (β) 30° bis 90° beträgt.Device according to one of the preceding claims, characterized in that the surface (21) extending from the tip (20) to the horizontal narrow side (19) of the steel strip stripping tool (17) has the shape of an isosceles triangle, the tip angle (β ) Is 30 ° to 90 °. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Spitzenwinkel (β) 60° beträgt.Device according to claim 4, characterized in that the tip angle (β) is 60 °. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der vertikale Abstand (22) der Spitze (20) von der angrenzenden horizontalen Schmalseite (19) des Ausbrechwerkzeugs (17) aus Bandstahl das 0,5 bis 2-fache der Materialdicke beträgt.Device according to one of the preceding claims, characterized in that the vertical distance (22) of the tip (20) from the adjacent horizontal narrow side (19) of the stripping tool (17) made of band steel is 0.5 to 2 times the material thickness. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß der vertikale Abstand (22) der Spitze (20) von der trägerplattenseitigen horizontalen Schmalseite (19) des Ausbrechwerkzeugs (17) aus Bandstahl das 1 bis 6-fache der Materialdicke beträgt.Apparatus according to claim 6, characterized in that the vertical distance (22) of the tip (20) from the horizontal narrow side (19) of the band steel stripping tool (17) on the carrier plate side is 1 to 6 times the material thickness. Vorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch einen am Ausbrechwerkzeug (17) aus Bandstahl festgelegten, an der Werkzeughalteplatte (15) angreifenden Anschlag (23).Device according to one of the preceding claims, characterized by a stop (23) fixed to the stripping tool (17) made of strip steel and acting on the tool holding plate (15). Vorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch einen am werkzeughalteplatteseitigen Ende des Ausbrechwerkzeugs (17) aus Bandstahl längs einer vertikalen Schmalseite (18) in einem Winkel von 90° angebrachten Fixierungsflansch (24) aus Bandstahl.Device according to one of the preceding claims, characterized by a fixing flange (24) made of steel strip attached to the tool holding plate-side end of the stripping tool (17) made of steel strip along a vertical narrow side (18) at an angle of 90 °. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Durchbrüche (13) der Auflagefläche (14) der Trägerplatte (12) durchgehend vertikale Wände (25) aufweisen.Device according to one of the preceding claims, characterized in that the openings (13) in the bearing surface (14) of the carrier plate (12) have vertical walls (25) throughout. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der horizontale Abstand (26) der die Spitze (20) aufweisenden vertikalen Schmalseite (18) des Ausbrechwerkzeugs (17) aus Bandstahl von der zugeordneten Wand (25) des Durchbruchs (13) das 2 bis 10-fache der Materialdicke beträgt.Device according to one of the preceding claims, characterized in that the horizontal distance (26) of the vertical narrow side (18) of the strip steel stripping tool (17) having the tip (20) from the associated wall (25) of the opening (13) is the second is up to 10 times the material thickness.
EP19920106351 1991-07-19 1992-04-13 Apparatus for removing cut-out parts, such as scrap parts, from a sheet containing cut-outs or the equivalent Expired - Lifetime EP0523327B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19914124098 DE4124098C2 (en) 1991-07-19 1991-07-19 Device for removing stripped parts, such as pieces of waste, from a sheet of material containing blanks or the like
DE4124098 1991-07-19
US08/129,981 US5443195A (en) 1991-07-19 1993-09-30 Device for removing knockouts, such as scrap, from a sheet of material containing blanks or similar

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EP0523327A1 true EP0523327A1 (en) 1993-01-20
EP0523327B1 EP0523327B1 (en) 1995-07-19

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US (1) US5443195A (en)
EP (1) EP0523327B1 (en)
AT (1) ATE125187T1 (en)
DE (3) DE4124098C2 (en)
DK (1) DK0523327T3 (en)
ES (1) ES2075974T3 (en)
FI (1) FI98135C (en)

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WO2011098300A3 (en) * 2010-02-15 2012-01-12 Joachim Jakob Separating device and method, and sheet comprising a punching line
EP2788158B1 (en) 2011-12-05 2018-08-01 BOXPLAN GmbH & Co.KG Method and apparatus for making a stripping tool

Also Published As

Publication number Publication date
DE4124098C1 (en) 1993-01-07
ES2075974T3 (en) 1995-10-16
FI98135C (en) 1997-04-25
FI922907A0 (en) 1992-06-22
DE9116425U1 (en) 1992-10-08
EP0523327B1 (en) 1995-07-19
DE4124098C2 (en) 1997-07-17
ATE125187T1 (en) 1995-08-15
FI98135B (en) 1997-01-15
DE59202923D1 (en) 1995-08-24
US5443195A (en) 1995-08-22
DK0523327T3 (en) 1995-09-11
FI922907L (en) 1993-01-20

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