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EP0595258B1 - Apparatus for freeing a tab from a sheet containing punched blanks or similar - Google Patents

Apparatus for freeing a tab from a sheet containing punched blanks or similar Download PDF

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Publication number
EP0595258B1
EP0595258B1 EP93117329A EP93117329A EP0595258B1 EP 0595258 B1 EP0595258 B1 EP 0595258B1 EP 93117329 A EP93117329 A EP 93117329A EP 93117329 A EP93117329 A EP 93117329A EP 0595258 B1 EP0595258 B1 EP 0595258B1
Authority
EP
European Patent Office
Prior art keywords
tab
sheet
plate
carrier plate
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93117329A
Other languages
German (de)
French (fr)
Other versions
EP0595258A1 (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
Application filed by Karl Marbach GmbH and Co KG filed Critical Karl Marbach GmbH and Co KG
Publication of EP0595258A1 publication Critical patent/EP0595258A1/en
Application granted granted Critical
Publication of EP0595258B1 publication Critical patent/EP0595258B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B26D2007/1872—Means for removing cut-out material or waste using breakaway pins
    • 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
    • B26D2007/1881—Means for removing cut-out material or waste using countertools
    • 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
    • B26D2007/189—Mounting blanking, stripping and break-out tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/002—Prebreaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/142—Cutting, e.g. perforating, punching, slitting or trimming using presses or dies

Definitions

  • the invention relates to a device for pre-breaking a flap in a sheet of material containing blanks or the like, which is conveyed to a subsequent work station after processing.
  • the device has a carrier plate for the material sheet, which has a through opening in the area in which a tab of the material sheet lying thereon is located.
  • a tool holding plate that can be moved vertically towards and away from the carrier plate is provided, on which at least one pin-shaped tab pre-breaking element protruding toward the carrier plate is attached.
  • material sheets of cardboard processed in a punching and grooving device are used. These material sheets often have rectangular tabs that are only attached to the remaining material sheet with one side. The material sheet is usually grooved along this fastening. The other three sides of the tab are cut out in the punching and creasing device. It sometimes happens that the tab on the Cutting sides are not separated properly. This leads to considerable problems in the further processing of the cut material sheet.
  • the invention has for its object to provide a device for pre-breaking a flap with structurally simple means, with which a reliable flap pre-breaking is ensured and which ensures the proper conveyance of a sheet of material into a subsequent work station.
  • the pin-shaped tab preliminary breaking element is formed by a threaded pin, the external thread of which engages with the internal thread of a thread device passing through the tool holding plate.
  • a start-up block which adjoins the passage opening in the conveying direction of the material sheet, has a smooth run-up slope on its upper side, which runs obliquely upwards in the conveying direction from the passage opening to the support surface of the carrier plate.
  • the pin-shaped tab pre-breaking element is designed as a threaded pin, its height can be positioned precisely so that when the tool holding plate moves downward, it presses the tab down just as far as is necessary for a clean separation of its cutting lines from the rest of the material sheet is. If the tab is still slightly inclined after an upward movement of the tool holding plate and the tab pre-breaking element, it does not stick to the carrier plate when the material sheet is conveyed due to the run-on slope, but is moved upwards by the run-on slope so that it is in one plane the sheet of material. If different chamfers are required in certain applications, the start block only needs to be replaced. The carrier plate itself does not have to be changed.
  • the start block is preferably made of hard paper or fabric layers that are pressed with phenolic resins.
  • the thread device is formed by two drive-in nuts which are driven in on the opposite sides of the tool holding plate.
  • the grub screw For an exact setting of the grub screw, it has an engagement device for an engagement of an adjusting tool on its end face facing away from the carrier plate.
  • the device has a carrier plate 12 on which a sheet of material 14 rests, which was previously processed in a punching and grooving device.
  • the material sheet 14 after being processed in the device in the direction of arrow A, is removed from the device, i.e. 1 to the left.
  • the material sheet 14 has at one edge 15 a rectangular tab 21 which, in the punching and grooving device, extends along a cutting line 24 extending perpendicularly to the edge 15 of the material sheet 14 and a cutting line 22 running parallel to the edge 15 and coinciding with the cutting line 24 remaining sheet of material 14 is cut off.
  • the tab 21 is therefore only attached to the material sheet 14 with its right-hand side in FIG. 2.
  • a groove 20 is embossed along this side.
  • a through opening 23 in the carrier plate 12 there is a through opening 23 in the carrier plate 12, the circumference of which is somewhat larger than the circumference of the tab 21.
  • a thrust block 38 is adjacent to the passage opening 23.
  • the stop block 38 has an oblique stop surface 40, which extends obliquely upwards from the through opening 23 to the support surface 13 of the carrier plate 12.
  • the angle ⁇ between the support surface 13 of the support plate 12 and the contact surface 40 is preferably 25 °.
  • the start block 38 can consist of hard paper or of fabric layers that are pressed with phenolic resins.
  • the start block 38 is detachably attached to the carrier plate 12. As seen in the direction of conveyance A, it is located directly after the left cutting line 24.
  • a horizontal tool holding plate 10 is arranged above the carrier plate 12 and can be moved vertically towards and away from the carrier plate 12.
  • a knockout element 16 projecting downward is provided which, when the tool holding plate 10 moves downward, presses a knockout part out of the material sheet 14.
  • two aligned drive-in nuts 30, 32 are driven into the through-hole 28 of the tool-holding plate 10 from one side of the tool-holding plate 10.
  • a set screw 34 is screwed into the drive-in nuts 30, 32 and thus extends perpendicular to the tool holding plate 10 and to the carrier plate 12.
  • the threaded pin 34 has a cylindrical pressure attachment 36, which is arranged coaxially to the threaded pin 34.
  • the grub screw 34 is attached such that the pressure attachment 36 is arranged above a pressure point 26 of the tab 21, which is located in the corner region of the tab 21 where the two cutting lines 22, 24 of the tab 21 meet.
  • a clamping screw 42 is screwed onto the threaded pin 34, which is used to fix the threaded pin 34.
  • the threaded pin 34 On its end face facing away from the carrier plate 12, the threaded pin 34 has a cutout 38 for engagement by an adjustment tool, not shown, for example a screwdriver or an Allen key.
  • the setting of the distance of the pressure attachment 36 from the tool holding plate 10 depends on the stroke of the tool holding plate 10, which is required for breaking out stripping parts by means of the stripping elements 16.
  • the distance of the pressure attachment 36 from the tool holding plate 10 is set such that the pressure attachment 36 presses the tab 21 down at the pressure point 26 so far that the tab 21 is reliably released at the cutting lines 22 and 24 is guaranteed.
  • the clamping nut 42 is loosened and the threaded pin 34 is rotated by means of an adjusting tool inserted into the recess 38 in such a way that the distance between the pressure attachment 36 and the tool holding plate 10 is optimal for breaking the tab 21. Then the lock nut 42 is tightened to lock the set screw 34.
  • a material sheet 14 previously processed in a punching and grooving device is placed on the carrier plate 12 in such a way that the tab 21 is located above the through opening 23.
  • the tool holding plate 10 is then moved downward, the stripping elements 16 pushing stripping parts out of the material sheet 14 through perforation openings 18. Since the path of the threaded pin 34 required to break the tab 21 forward is substantially less than the path of the stripping elements 16 for pushing out a stripping part, the pressure attachment 36 later hits the pressure point 26 of the tab 21.
  • the tab 21 is pressed down so far at the pressure point 26 that the tab 21 is cleanly separated from the rest of the material sheet at the cutting lines 22 and 24.
  • the tool holding plate 10 is then moved up again.
  • the tab 21 After breaking through the setscrew 34, the tab 21 is slightly bent downward around the groove 20, so that the cutting line 24 of the tab 21 is located below the bearing surface of the support plate 12.
  • the material sheet 14 is conveyed out of the device in the direction of arrow A.
  • the cutting edge 24 strikes the smooth run-on bevel 40, which ensures that the tab 21 is moved back into the support plane of the material sheet 14 during the movement of the material sheet 14.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Making Paper Articles (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Adornments (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Wrappers (AREA)
  • Advancing Webs (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The apparatus is used for freeing a tab (21) from a sheet (14) which contains blanks or the like and is conveyed after processing to a working station arranged downstream. The apparatus includes a supporting plate (12) for the sheet (14), which plate (12) has a through aperture (23) in the region containing a tab (21) in the sheet (14) resting on the said plate (12). A tool-holding plate (10) can be moved vertically towards the supporting plate (12) and away from the latter. On the tool-holding plate (10) there is mounted at least one pin-like tab-freeing element (34) which projects towards the supporting plate (12). In order to ensure that the tabs are reliably freed and that a sheet is conveyed onwards properly to a working station arranged downstream, the pin-like tab-freeing element takes the form of a headless pin (34), the outside thread of which engages with the inside thread of a threaded device (30, 32) which passes through the tool-holding plate (10). A run-up block (38) bounds in the conveying direction (A) of the sheet (12) on the through aperture (23). On the top of the run-up block (38) there is provided a smooth inclined run-up surface (40) which inclines upwards in the conveying direction (A) from the through aperture (23) to the supporting surface (13) of the supporting plate (12). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zur Vorbrechung einer Lasche in einem Zuschnitte oder dergleichen enthaltenden Werkstoffbogen, der nach der Bearbeitung in eine nachfolgende Arbeitsstation gefördert wird. Die Vorrichtung weist eine Trägerplatte für den Werkstoffbogen auf, die in dem Bereich, in dem sich eine Lasche des aufliegenden Werkstoffbogens befindet, eine Durchgangsöffnung besitzt. Außerdem ist eine vertikal zur Trägerplatte hin und von ihr weg bewegbare Werkzeughalteplatte vorgesehen, an der wenigsten ein zur Tragerplatte hin vorstehendes, stiftförmiges Laschenvorbrechelement angebracht ist.The invention relates to a device for pre-breaking a flap in a sheet of material containing blanks or the like, which is conveyed to a subsequent work station after processing. The device has a carrier plate for the material sheet, which has a through opening in the area in which a tab of the material sheet lying thereon is located. In addition, a tool holding plate that can be moved vertically towards and away from the carrier plate is provided, on which at least one pin-shaped tab pre-breaking element protruding toward the carrier plate is attached.

Zur Herstellung von Schachteln, insbesondere zur Herstellung von Zigarettenschachteln, werden in einer Stanz- und Rilleneinrichtung bearbeitete Werkstoffbögen aus Karton verwendet. Diese Werkstoffbögen weisen häufig rechteckige Laschen auf, die nur noch mit einer Seite an dem restlichen Werkstoffbogen befestigt sind. In der Regel ist der Werkstoffbogen entlang dieser Befestigung gerillt. Die anderen drei Seiten der Lasche werden in der Stanz- und Rilleneinrichtung ausgeschnitten. Hierbei kommt es gelegentlich vor, daß die Lasche an den Schnittseiten nicht sauber getrennt wird. Dies führt bei der Weiterbearbeitung des zugeschnittenen Werkstoffbogens zu erheblichen Problemen.For the production of boxes, in particular for the production of cigarette boxes, material sheets of cardboard processed in a punching and grooving device are used. These material sheets often have rectangular tabs that are only attached to the remaining material sheet with one side. The material sheet is usually grooved along this fastening. The other three sides of the tab are cut out in the punching and creasing device. It sometimes happens that the tab on the Cutting sides are not separated properly. This leads to considerable problems in the further processing of the cut material sheet.

Aus diesem Grund ist man dazu übergegangen, an der Unterseite der Werkzeughalteplatte Nägel oder dergleichen anzubringen, die bei einer Abwärtsbewegung der Werkzeughalteplatte die Lasche soweit nach unten drücken, bis sich die Lasche an den Schnittseiten vollkommen von dem restlichen Werkstoffbogen getrennt hat. Allerdings darf bei den bekannten Vorrichtungen die Lasche nicht zu weit nach unten gedrückt werden, da die hierdurch nach unten geneigte Lasche bei einer Weiterbeförderung des Werkstoffbogens aus der Vorrichtung an der Trägerplatte hängenbleibt und nach hinten umknickt. In diesem Fall kann der Werkstoffbogen in einer weiteren Arbeitsstation nicht ordnungsgemäß weiterverarbeitet werden.For this reason, there has been a move to attaching nails or the like to the underside of the tool holding plate, which, when the tool holding plate moves downward, press the tab down until the tab on the cut sides has completely separated from the rest of the material sheet. However, in the known devices, the tab must not be pressed down too far, since the tab which is thereby inclined gets stuck on the carrier plate when the material sheet is conveyed out of the device and folds backwards. In this case, the sheet of material cannot be properly processed in another work station.

Der Erfindung liegt die Aufgabe zugrunde, mit konstruktiv einfachen Mitteln eine Vorrichtung zur Vorbrechung einer Lasche zu schaffen, mit der eine zuverlässige Laschenvorbrechung gesichert ist und die eine ordnungsgemäße Weiterbeförderung eines Werkstoffbogens in eine nachfolgende Arbeitsstation sicherstellt.The invention has for its object to provide a device for pre-breaking a flap with structurally simple means, with which a reliable flap pre-breaking is ensured and which ensures the proper conveyance of a sheet of material into a subsequent work station.

Diese Aufgabe wird ausgehend von dem gattungsgemäßen Stand dei Technik dadurch gelöst, daß das stiftförmige Laschenvorbrechelement von einem Gewindestift gebildet wird, dessen Außengewinde mit dem Innengewinde einer durch die Werkzeughalteplatte hindurch gehenden Gewindeeinrichtung in Eingriff steht. Ein Anlaufblock, der in Förderrichtung des Werkstoffbogens an die Durchgangsöffnung angrenzt, weist auf seiner Oberseite eine glatte Anlaufschräge auf, die in Förderrichtung von der Durchgangsöffnung aus bis zur Auflagefläche der Trägerplatte schräg nach oben verläuft.This object is achieved on the basis of the generic state of the art in that the pin-shaped tab preliminary breaking element is formed by a threaded pin, the external thread of which engages with the internal thread of a thread device passing through the tool holding plate. A start-up block, which adjoins the passage opening in the conveying direction of the material sheet, has a smooth run-up slope on its upper side, which runs obliquely upwards in the conveying direction from the passage opening to the support surface of the carrier plate.

Dadurch, daß das stiftförmige Laschenvorbrechelement als Gewindestift ausgebildet ist, kann es in seiner Höhe genau so positioniert werden, daß es bei einer Abwärtsbewegung der Werkzeughalteplatte die Lasche gerade so weit nach unten drückt, wie es für ein sauberes Abtrennen ihrer Schnittlinien vom dem restlichen Werkstoffbogen erforderlich ist. Wenn die Lasche nach einer Aufwärtsbewegung der Werkzeughalteplatte und des Laschenvorbrechelementes noch leicht nach unten geneigt ist, bleibt sie bei der Weiterbeförderung des Werkstoffbogens aufgrund der Anlaufschräge nicht an der Trägerplatte hängen, sondern wird durch die Anlaufschräge so nach oben bewegt, daß sie in einer Ebene mit dem Werkstoffbogen liegt. Falls in bestimmten Anwendungsfällen unterschiedliche Anlaufschrägen erforderlich sind, muß lediglich der Anlaufblock ersetzt werden. Die Trägerplatte selbst muß nicht verändert werden.Because the pin-shaped tab pre-breaking element is designed as a threaded pin, its height can be positioned precisely so that when the tool holding plate moves downward, it presses the tab down just as far as is necessary for a clean separation of its cutting lines from the rest of the material sheet is. If the tab is still slightly inclined after an upward movement of the tool holding plate and the tab pre-breaking element, it does not stick to the carrier plate when the material sheet is conveyed due to the run-on slope, but is moved upwards by the run-on slope so that it is in one plane the sheet of material. If different chamfers are required in certain applications, the start block only needs to be replaced. The carrier plate itself does not have to be changed.

Der Anlaufblock besteht vorzugsweise aus Hartpapier oder aus Gewebelagen, die mit Phenolharzen verpreßt sind.The start block is preferably made of hard paper or fabric layers that are pressed with phenolic resins.

Bei einer bevorzugten Ausführungsform der Erfindung wird die Gewindeeinrichtung von zwei Einschlagmuttern gebildet, die an den gegenüberliegenden Seiten der Werkzeughalteplatte eingeschlagen sind.In a preferred embodiment of the invention, the thread device is formed by two drive-in nuts which are driven in on the opposite sides of the tool holding plate.

Für eine genaue Einstellung des Gewindestiftes weist dieser an seiner der Trägerplatte abgewandten Stirnseite eine Eingriffseinrichtung für einen Eingriff eines Einstellwerkzeugs auf.For an exact setting of the grub screw, it has an engagement device for an engagement of an adjusting tool on its end face facing away from the carrier plate.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine Vorrichtung zur Vorbrechung einer Lasche;
Fig. 2
den Schnitt II-II von Fig. 1;
An embodiment of the invention is explained below with reference to drawings. Show it:
Fig. 1
a device for pre-breaking a tab;
Fig. 2
the section II-II of Fig. 1;

Die Vorrichtung weist eine Trägerplatte 12 auf, auf der ein Werkstoffbogen 14 aufliegt, der zuvor in einer Stanz- und Rilleneinrichtung bearbeitet worden ist. Der Werkstoffbogen 14 wird nach seiner Bearbeitung in der Vorrichtung in Richtung des Pfeils A aus der Vorrichtung, d.h. in Fig. 1 nach links, befördert.The device has a carrier plate 12 on which a sheet of material 14 rests, which was previously processed in a punching and grooving device. The material sheet 14, after being processed in the device in the direction of arrow A, is removed from the device, i.e. 1 to the left.

Der Werkstoffbogen 14 weist an einem Rand 15 eine rechteckige Lasche 21 auf, die in der Stanz- und Rilleneinrichtung entlang einer sich senkrecht zum Rand 15 des Werkstoffbogens 14 erstreckenden Schnittlinie 24 und einer parallel zum Rand 15 verlaufenden, mit der Schnittlinie 24 zusammentreffenden Schnittlinie 22 vom restlichen Werkstoffbogen 14 abgeschnitten ist. Die Lasche 21 ist daher nur noch mit ihrer in Fig. 2 rechten Seite an dem Werkstoffbogen 14 befestigt. Entlang dieser Seite ist eine Rille 20 eingeprägt.The material sheet 14 has at one edge 15 a rectangular tab 21 which, in the punching and grooving device, extends along a cutting line 24 extending perpendicularly to the edge 15 of the material sheet 14 and a cutting line 22 running parallel to the edge 15 and coinciding with the cutting line 24 remaining sheet of material 14 is cut off. The tab 21 is therefore only attached to the material sheet 14 with its right-hand side in FIG. 2. A groove 20 is embossed along this side.

Unterhalb der Lasche 21 befindet sich in der Trägerplatte 12 eine Durchgangsöffnung 23, deren Umfang etwas größer ist als der Umfang der Lasche 21. Links von der Durchgangsöffnung 23, d.h. in Föderrichtung A nach der Durchgangsöffnung 23, grenzt ein Anlaufblock 38 an die Durchgangsöffnung 23 an. Der Anlaufblock 38 weist eine schräge Anlauffläche 40 auf, die sich von der Durchgangsöffnung 23 aus zur Auflagefläche 13 der Trägerplatte 12 hin schräg nach oben erstreckt. Der Winkel α zwischen der Auflagefläche 13 der Trägerplatte 12 und der Anlauffläche 40 beträgt vorzugweise 25°.Below the tab 21 there is a through opening 23 in the carrier plate 12, the circumference of which is somewhat larger than the circumference of the tab 21. To the left of the through opening 23, i.e. in feed direction A after the passage opening 23, a thrust block 38 is adjacent to the passage opening 23. The stop block 38 has an oblique stop surface 40, which extends obliquely upwards from the through opening 23 to the support surface 13 of the carrier plate 12. The angle α between the support surface 13 of the support plate 12 and the contact surface 40 is preferably 25 °.

Der Anlaufblock 38 kann aus Hartpapier oder aus Gewebelagen bestehen, die mit Phenolharzen verpreßt sind. Der Anlaufblock 38 ist lösbar an der Trägerplatte 12 angebracht. Er befindet sich in Förderrichtung A gesehen direkt nach der linken Schnittlinie 24.The start block 38 can consist of hard paper or of fabric layers that are pressed with phenolic resins. The start block 38 is detachably attached to the carrier plate 12. As seen in the direction of conveyance A, it is located directly after the left cutting line 24.

Oberhalb der Trägerplatte 12 ist eine horizontale Werkzeughalteplatte 10 angeordnet, die vertikal zur Trägerplatte 12 hin und von ihr weg bewegbar ist. An der Werkzeughalteplatte 10 ist ein nach unten vorstehendes Ausbrechelement 16 vorgesehen, daß bei einer Abwärtsbewegung der Werkzeughalteplatte 10 ein Ausbrechteil aus dem Werkstoffbogen 14 herausdrückt.A horizontal tool holding plate 10 is arranged above the carrier plate 12 and can be moved vertically towards and away from the carrier plate 12. On the tool holding plate 10, a knockout element 16 projecting downward is provided which, when the tool holding plate 10 moves downward, presses a knockout part out of the material sheet 14.

In der Werkzeughalteplatte 10 sind außerdem zwei fluchtende Einschlagmuttern 30, 32 jeweils von einer Seite der Werkzeughalteplatte 10 aus in eine Durchgangsöffnung 28 der Werkzeughalteplatte 10 eingeschlagen. In die Einschlagmuttern 30, 32 ist ein Gewindestift 34 eingeschraubt, der sich somit senkrecht zur Werkzeughalteplatte 10 und zur Trägerplatte 12 erstreckt. An seinem der Trägerplatte 12 zugewandten Ende weist der Gewindestift 34 einen zylindrischen Druckansatz 36 auf, der koaxial zum Gewindestift 34 angeordnet ist. Der Gewindestift 34 ist so angebracht, daß der Druckansatz 36 oberhalb eines Druckpunktes 26 der Lasche 21 angeordnet ist, der sich in dem Eckbereich der Lasche 21 befindet, an dem die beiden Schnittlinien 22, 24 der Lasche 21 zusammentreffen.In addition, two aligned drive-in nuts 30, 32 are driven into the through-hole 28 of the tool-holding plate 10 from one side of the tool-holding plate 10. A set screw 34 is screwed into the drive-in nuts 30, 32 and thus extends perpendicular to the tool holding plate 10 and to the carrier plate 12. At its end facing the carrier plate 12, the threaded pin 34 has a cylindrical pressure attachment 36, which is arranged coaxially to the threaded pin 34. The grub screw 34 is attached such that the pressure attachment 36 is arranged above a pressure point 26 of the tab 21, which is located in the corner region of the tab 21 where the two cutting lines 22, 24 of the tab 21 meet.

Oberhalb der Werkzeughalteplatte 10 ist eine Klemmschraube 42 auf den Gewindestift 34 aufgeschraubt, die zur Feststellung des Gewindestiftes 34 dient. An seiner der Trägerplatte 12 abgewandten Stirnseite weist der Gewindestift 34 eine Aussparung 38 für einen Eingriff eines nicht gezeigten Einstellungswerkzeugs, beispielsweise eines Schraubenziehers oder eines Innensechkantschlüssels, auf.Above the tool holding plate 10, a clamping screw 42 is screwed onto the threaded pin 34, which is used to fix the threaded pin 34. On its end face facing away from the carrier plate 12, the threaded pin 34 has a cutout 38 for engagement by an adjustment tool, not shown, for example a screwdriver or an Allen key.

Die Einstellung des Abstandes des Druckansatzes 36 von der Werkzeughalteplatte 10 ist abhängig von dem Hub der Werkzeughalteplatte 10, der zum Ausbrechen von Ausbrechteilen mittels der Ausbrechelemente 16 erforderlich ist.The setting of the distance of the pressure attachment 36 from the tool holding plate 10 depends on the stroke of the tool holding plate 10, which is required for breaking out stripping parts by means of the stripping elements 16.

Wenn der erforderliche Hub der Werkzeughalteplatte 10 ermittelt ist, wird der Abstand des Druckansatzes 36 von der Werkzeughalteplatte 10 so eingestellt, daß der Druckansatz 36 die Lasche 21 an dem Druckpunkt 26 so weit nach unten drückt, daß ein zuverlässiges Lösen der Lasche 21 an den Schnittlinien 22 und 24 gewährleistet ist.When the required stroke of the tool holding plate 10 has been determined, the distance of the pressure attachment 36 from the tool holding plate 10 is set such that the pressure attachment 36 presses the tab 21 down at the pressure point 26 so far that the tab 21 is reliably released at the cutting lines 22 and 24 is guaranteed.

Für diese Einstellung wird die Klemmutter 42 gelöst und der Gewindestift 34 mittels eines in die Aussparung 38 eingesetzten Einstellwerkzeuges so gedreht, daß der Abstand des Druckansatzes 36 von der Werkzeughalteplatte 10 zum Vorbrechen der Lasche 21 optimal ist. Anschließend wird die Klemmutter 42 zur Feststellung des Gewindestiftes 34 angezogen.For this setting, the clamping nut 42 is loosened and the threaded pin 34 is rotated by means of an adjusting tool inserted into the recess 38 in such a way that the distance between the pressure attachment 36 and the tool holding plate 10 is optimal for breaking the tab 21. Then the lock nut 42 is tightened to lock the set screw 34.

Während des Betriebes der Vorrichtung wird ein zuvor in einer Stanz- und Rilleneinrichtung bearbeiteter Werkstoffbogen 14 auf die Trägerplatte 12 so aufgelegt, daß sich die Lasche 21 oberhalb der Durchgangsöffnung 23 befindet. Anschließend wird die Werkzeughalteplatte 10 nach unten bewegt, wobei die Ausbrechelemente 16 Ausbrechteile durch Durchbrechöffnungen 18 aus dem Werkstoffbogen 14 drücken. Da der zum Vorbrechen der Lasche 21 erforderliche Weg des Gewindestiftes 34 wesentlich geringer ist als der Weg der Ausbrechelemente 16 zum Ausdrükken eines Ausbrechteils, trifft der Druckansatz 36 später auf den Druckpunkt 26 der Lasche 21 auf. Die Lasche 21 wird an dem Druckpunkt 26 so weit nach unten gedrückt, daß die Lasche 21 an den Schnittlinien 22 und 24 sauber von dem restlichen Werkstoffbogen getrennt wird. Anschließend wird die Werkzeughalteplatte 10 wieder nach oben bewegt.During the operation of the device, a material sheet 14 previously processed in a punching and grooving device is placed on the carrier plate 12 in such a way that the tab 21 is located above the through opening 23. The tool holding plate 10 is then moved downward, the stripping elements 16 pushing stripping parts out of the material sheet 14 through perforation openings 18. Since the path of the threaded pin 34 required to break the tab 21 forward is substantially less than the path of the stripping elements 16 for pushing out a stripping part, the pressure attachment 36 later hits the pressure point 26 of the tab 21. The tab 21 is pressed down so far at the pressure point 26 that the tab 21 is cleanly separated from the rest of the material sheet at the cutting lines 22 and 24. The tool holding plate 10 is then moved up again.

Nach dem Vorbrechen durch den Gewindestift 34 ist die Lasche 21 leicht um die Rille 20 nach unten gebogen, so daß sich die Schnittlinie 24 der Lasche 21 unterhalb der Auflagefläche der Trageplatte 12 befindet.After breaking through the setscrew 34, the tab 21 is slightly bent downward around the groove 20, so that the cutting line 24 of the tab 21 is located below the bearing surface of the support plate 12.

Nach der Bearbeitung in der Vorrichtung wird der Werkstoffbogen 14 in Richtung des Pfeils A aus der Vorrichtung befördert. Dabei trifft die Schnittkante 24 auf die glatte Anlaufschräge 40 auf, die dafür sorgt, daß die Lasche 21 während der Bewegung des Werkstoffbogens 14 in die Auflageebene des Werkstoffbogens 14 zurückbewegt wird.After processing in the device, the material sheet 14 is conveyed out of the device in the direction of arrow A. The cutting edge 24 strikes the smooth run-on bevel 40, which ensures that the tab 21 is moved back into the support plane of the material sheet 14 during the movement of the material sheet 14.

Claims (5)

  1. Device for freeing a tab (21) in a sheet of material (14) which contains blanks or the like and which, after processing, is supplied to a subsequent work station;
    - with a carrier plate (12) for the sheet of material (14), the carrier plate (12) having a through-hole (23) in the region in which a tab (21) of the sheet of material (14) lying thereon is disposed; and
    - with a tool-holder plate (10) which is movable vertically towards and away from the carrier plate (12) and on which at least one pin-shaped tab-breaking element (34) is mounted, projecting towards the carrier plate (12),
    characterized in that,
    - the pin-shaped tab-breaking element is formed by a threaded pin (34) the external thread of which is in engagement with the internal thread of a thread device (30, 32) extending through the tool-holder plate (10); and in that
    - a check block (38) is provided, is disposed adjacent the through-hole (23) in the direction (A) in which the sheet of material (12) is transported and has, on its upper side, a smooth check slope (40) which extends obliquely upwardly in the direction of transportation (A) from the through-hole (23) to the bearing surface (13) of the carrier plate (12).
  2. Device according to Claim 1, characterized in that the check block (38) is made of resin-impregnated paper.
  3. Device according to Claim 1, characterized in that the check block (38) is made of fabric layers pressed with phenolic resins.
  4. Device according to any one of the preceding claims, characterized in that the thread device is formed by two drive-in nuts (30, 32) which are driven into the tool-holder plate (10) on opposite sides.
  5. Device according to any one of the preceding claims, characterized in that the threaded pin (34) has an engagement device (38) on its end facing away from the carrier plate (12) for the engagement of an adjustment tool.
EP93117329A 1992-10-27 1993-10-26 Apparatus for freeing a tab from a sheet containing punched blanks or similar Expired - Lifetime EP0595258B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9214922U 1992-10-27
DE9214922U DE9214922U1 (en) 1992-10-27 1992-10-27 Device for pre-breaking a tab in a sheet of material containing blanks or the like

Publications (2)

Publication Number Publication Date
EP0595258A1 EP0595258A1 (en) 1994-05-04
EP0595258B1 true EP0595258B1 (en) 1996-03-27

Family

ID=6885594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117329A Expired - Lifetime EP0595258B1 (en) 1992-10-27 1993-10-26 Apparatus for freeing a tab from a sheet containing punched blanks or similar

Country Status (7)

Country Link
EP (1) EP0595258B1 (en)
AT (1) ATE135949T1 (en)
DE (2) DE9214922U1 (en)
DK (1) DK0595258T3 (en)
ES (1) ES2084433T3 (en)
FI (1) FI934755A (en)
GR (1) GR3019458T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH690958A5 (en) * 1995-04-15 2001-03-15 Bobst Sa rotary cutting unit.
JP6451928B2 (en) * 2014-08-21 2019-01-16 大日本印刷株式会社 Blank manufacturing apparatus and blank manufacturing method
CN105459210B (en) * 2016-01-11 2017-04-12 济南泉永印务有限公司 Waste clearing mechanism of die cutting machine
CN110948541B (en) * 2019-12-11 2021-07-06 上海诠佳橡塑五金有限公司 Felt pad manufacturing and waste discharge equipment and method
CN113352390B (en) * 2021-06-18 2022-04-01 苏州誉诚新材料科技有限公司 Double-faced adhesive tape die-cutting waste discharge mechanism for die-cutting machine and working method of double-faced adhesive tape die-cutting waste discharge mechanism

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE295088C (en) *
US2467973A (en) * 1945-10-12 1949-04-19 Ohio Boxboard Co Blank aligning mechanism
US2655841A (en) * 1949-07-19 1953-10-20 Gardner Board & Carton Co Mechanism for freeing flaps and cutouts in carton blanks
FR2623438A1 (en) * 1987-11-20 1989-05-26 Gleyze Jean Installation permitting the cutting-out of elementary blanks, particularly from cardboard (fibreboard), intended to produce packages
DE3941469A1 (en) * 1989-12-15 1991-06-20 Raymond A Kg WORKING METHOD FOR PRODUCING A CENTERING RING IN THE CLAMP LEG OF A U-SHAPED T-NUT

Also Published As

Publication number Publication date
FI934755A0 (en) 1993-10-27
ATE135949T1 (en) 1996-04-15
GR3019458T3 (en) 1996-06-30
DE9214922U1 (en) 1992-12-24
DK0595258T3 (en) 1996-04-29
ES2084433T3 (en) 1996-05-01
DE59302040D1 (en) 1996-05-02
FI934755A (en) 1994-04-28
EP0595258A1 (en) 1994-05-04

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