EP3461606B1 - Punch or embossing and sheet processing method - Google Patents

Punch or embossing and sheet processing method Download PDF

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Publication number
EP3461606B1
EP3461606B1 EP17194373.1A EP17194373A EP3461606B1 EP 3461606 B1 EP3461606 B1 EP 3461606B1 EP 17194373 A EP17194373 A EP 17194373A EP 3461606 B1 EP3461606 B1 EP 3461606B1
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EP
European Patent Office
Prior art keywords
sheet
station
processed
processing
conveyor
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.)
Active
Application number
EP17194373.1A
Other languages
German (de)
French (fr)
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EP3461606A1 (en
Inventor
Steffen Pieper
Jan GOCKEL
Raik FREUDENBERG
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.)
KAMA GmbH
Original Assignee
KAMA GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KAMA GmbH filed Critical KAMA GmbH
Priority to EP17194373.1A priority Critical patent/EP3461606B1/en
Priority to US16/130,518 priority patent/US10821624B2/en
Priority to CN201811119194.1A priority patent/CN109591100B/en
Publication of EP3461606A1 publication Critical patent/EP3461606A1/en
Application granted granted Critical
Publication of EP3461606B1 publication Critical patent/EP3461606B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • 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
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/04—Feeding sheets or blanks
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
    • 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
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • B26D2007/322—Means for performing other operations combined with cutting for conveying or stacking cut product the cut products being sheets, e.g. sheets of paper
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0702—Embossing by tools working discontinuously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/50—Gripping means
    • B65H2405/55—Rail guided gripping means running in closed loop, e.g. without permanent interconnecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/42—Die-cutting

Definitions

  • the invention relates to improvements and further developments in punching or embossing machines and sheet processing methods which can be carried out with such punching or embossing machines.
  • a punching or embossing machine is understood to mean a device for punching sheet-like material, in particular made of paper or cardboard, with at least one system station in which sheets to be processed are provided, a processing area in which a punching or embossing tool and a Counter-plate, the sheets to be processed are processed, and a delivery station in which processed sheets are deposited, the sheets being moved individually and step-by-step from the system station to the processing station by a sheet transport device, exposed in the processing station to the action of the punching or embossing tool and then from the processing station can be moved to the delivery station.
  • the DE 1 045 778 B discloses an automatic punching machine for sheet-like material, such as cardboard, paper or the like, in which the sheets are fed by means of gripper bars from the workstation where the sheets are punched out to at least one other location where the waste is broken out, the punching of the Materials effecting work station at least two detachably arranged one behind the other, designed as individual units in modular form, are connected downstream, the drive means for the ejectors are coupled to the drive means of the first work station.
  • sheet-like material such as cardboard, paper or the like
  • the generic EP 1 466 851 A2 describes in paragraph [0003] a known punching machine in which a continuous gripper, running at least over two working positions, to the side of the path of movement of the punched sheets, grasps two punched sheets laterally and transports them together to the next working position returns to the starting position. Because the gripper grips and holds both sheets at the same time, both sheets can only be deposited at the same time. With such an arrangement, a sheet that has already been processed can only be properly deposited in the delivery station if the sheets are deposited there on a stationary surface, for example stacked one on top of the other. This means that the sheets must then be removed from the delivery station one after the other, for example in order to break out copies cut from the sheet by punching and to separate them from the waste. This results in a considerable time delay.
  • the proposed method enables the two sheets to be deposited independently of one another, which enables the entire process sequence to be accelerated, in particular by providing a conveyor that operates continuously at a conveying speed in the delivery station for the further transport of a sheet onto which the processed sheet is deposited.
  • the already processed, ie punched and / or embossed sheets now no longer have to be accelerated again from standstill in the delivery station or removed separately from a stack in order to break out the benefits from the waste and separate from it, but the sheets can can be forwarded without interruption directly to a stripping station arranged in the sheet transport path to the delivery station, whereby the sheet is prevented from slipping on the conveyor by the fact that the sheet is deposited on the conveyor while in motion, whereby a significant increase in productivity can be achieved can.
  • the sheet to be processed and the processed sheet are moved at a transport speed that at least approximately corresponds to the conveying speed of the conveyor, at least when depositing, ie at the moment of depositing the processed sheet in the delivery station, than ever lower the relative speed between the conveyor and the processed sheet placed on it at the moment of The lower the tendency of the processed sheet to slip on the conveyor.
  • the risk of unwanted slipping of the sheet placed on the conveyor can be further reduced by holding the processed sheet on the conveyor by generating an air pressure difference between an upper side and a lower side of the sheet, for example by generating a negative pressure on the lower side of the sheet so that the sheet is pressed onto the conveyor by the surrounding air pressure.
  • the processed sheet is held on the conveyor by generating at least one force acting on an upper side of the sheet, for example by a hold-down device that is held above the conveyor at a distance that corresponds to the thickness of the sheet being transported corresponds to.
  • the proposed punching or embossing machine also takes into account the fact that the sheet to be processed must be deposited very precisely in the processing station, which is achieved by the sheet gripping device only releasing the sheet when it has come to a standstill at the second reversal point.
  • the already processed sheet removed from the processing station is already released by the sheet gripping device during the movement, which enables seamless further transport.
  • This further transport can be implemented, for example, by a second sheet gripping device which is arranged behind the processing station and which still holds the sheet takes over from this during the movement of the first sheet gripping device.
  • the sheet gripping device has at least two separately controllable gripping elements, so that one of the gripping elements releases the sheet to be processed after the sheet gripping device has come to a standstill in the processing station and the other gripping element releases the processed sheet before it reaches the second reversing position.
  • Gripping elements in this sense can be gripping tongs, suction grippers, etc., for example.
  • the sheet gripping device can have a common base rail with which the at least two gripping elements cooperate in order to grasp a sheet either jointly or independently of one another and then to deposit a sheet either jointly or independently of one another.
  • the upper rail which can be moved back and forth relative to the lower rail between a closed position in which the two arches are clamped, and an open position in which the two arches are released, could be divided into two partial rails which can be controlled separately in order to be able to individually grasp and / or let go of the respective bow.
  • the further transport of the processed sheet from the delivery station can be implemented, for example, by a second sheet gripping device arranged behind the processing station.
  • a conveyor operating continuously at a conveying speed is arranged in the delivery station for the further transport of a sheet.
  • Such a conveyor can for example be a roller conveyor which comprises a plurality of transport rollers arranged transversely to the transport direction, which are arranged one behind the other in a horizontal plane and whose top surface lines define a transport plane for the processed sheets.
  • it can be a belt or belt conveyor that has a flat conveyor belt or one or more relatively narrow conveyor belts that are guided around at least two deflection rollers or deflection rollers and whose upper runs each define the transport plane of the sheets.
  • the sheet gripping device moves between the first reversing position and the second reversing position at a transport speed which at least approximately corresponds to the conveying speed of the conveyor, at least when depositing, i.e. at the moment of depositing the processed sheet in the delivery station, as already mentioned above Reference to the proposed method was explained in more detail.
  • the conveyor is designed to generate a negative pressure on the underside of the sheet.
  • the conveyor is a belt conveyor with a perforated belt and a suction box arranged below it.
  • at least one pressure means acting on an upper side of the sheet for example one or more, can be located above the conveyor Pressure rollers, be arranged.
  • the at least two gripping elements are in operative connection with a jointly acting actuating device for gripping the respective sheet and with separately acting actuating devices for depositing the respective sheet.
  • the punching or embossing machine 1 shown comprises a discontinuously working system station 11, a discontinuously working processing station 12 and a continuously working delivery station 13. Laterally next to the system station 11, the processing station 12 and the delivery station 13 and thus parallel to a sheet transport path, along whose sheets 31, 32 are moved by the punching or embossing machine 1, extends a sheet transport device designed for gripping, moving and releasing two sheets 31, 32, which has a linear guide 24 and a linear guide arranged parallel to a sheet transport path the linear guide 24 between a first reversal position and a second reversal position back and forth movable sheet gripping device with a common base rail 23, which is the lower rail in the embodiment, and two separately controllable gripping elements 21, 22, which are part of the upper rail in the embodiment, which are connected to the common Base rail 23 cooperate in order to each grip a sheet 31, 32 on a lateral edge.
  • a sheet stack 4 is arranged in the area of the contact station 11, by means of which the sheets 31 to be processed are made available on the machine and fed individually to the contact station 11.
  • Fig. 1 the sheet gripping device is arranged in a first reversal position, in which a first gripping element 21 for gripping a sheet 31 to be processed in the contact station 11 and a second gripping element 22 for gripping a processed sheet 32 is positioned in the processing station 12. Both gripping elements 21, 22 are open and thus ready to grasp one sheet 31, 32 each.
  • Fig. 2 shows how a sheet 31 to be processed is removed from the sheet stack 4 and moved transversely to the sheet transport path in the plant station 11, while in the Processing station 12 an already processed, ie embossed or punched sheet 32 lies in such a way that it can be gripped by the second gripping element 22.
  • the sheet 31 to be processed has also come to a rest in the contact station 11 in such a way that it can be gripped by the first gripping element 21.
  • Fig. 4 shows how the first gripping element 21 grips the sheet 31 to be processed lying in the contact station 11 and the second gripping element 22 grips the processed sheet 32 lying in the processing station 12.
  • the gripping takes place simultaneously in that both gripping elements 21, 22 are closed simultaneously by a common actuating device, so that both sheets 31, 32 are gripped on a lateral edge, that is to say parallel to the sheet transport path.
  • Fig. 5 shows how the sheet gripping device with the closed gripping elements 21, 22 and both sheets 31, 32 is moved from the first reversing position in the direction of the second reversing position.
  • Fig. 6 it is shown how the second gripping element 22 is opened by a separate actuating device and deposits the processed sheet 32 on a continuous conveyor arranged in the delivery station 13, which conveyor moves at the same speed as the sheet gripping device, while the sheet gripping device approaches the second reversing position, ie before the second reversal position is reached. From this point on, only the sheet 31 to be processed is moved by the first gripping element 21 of the sheet gripping device, while the processed sheet 32 is moved by the continuous conveyor is moved on.
  • Fig. 7 shows the moment at which the sheet gripping device reaches the second reversing position and comes to a standstill there.
  • the first gripping element 21 deposits the sheet 31 to be processed in the processing station 12 in that the first gripping element 21 is opened by a separate actuating device. Both gripping elements 21, 22 are now open, and the processed sheet 32 is moved on by the continuous conveyor arranged in the delivery station 13.
  • Fig. 8 shows, the processed sheet 32 on the conveyor leaves the punching or embossing machine 1, for example to be fed to a stripping station, while the sheet gripping device with the two gripping elements 21, 22 is moved back into the first reversal position and the sheet 31 to be processed is in the processing station 12 processed, that is, embossed or punched. The steps described are then repeated again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Die Erfindung betrifft Verbesserungen und Weiterentwicklungen an Stanz- oder Prägemaschinen und Bogenbearbeitungsverfahren, die mit solchen Stanz- oder Prägemaschinen ausführbar sind.The invention relates to improvements and further developments in punching or embossing machines and sheet processing methods which can be carried out with such punching or embossing machines.

Unter einer Stanz- oder Prägemaschine wird eine Vorrichtung zum Stanzen von bogenförmigem Material, insbesondere aus Papier oder Karton, verstanden, mit wenigstens einer Anlagestation, in der zu bearbeitende Bögen bereitgestellt werden, einem Bearbeitungsbereich, in dem durch Zusammenwirken eines Stanz- oder Prägewerkzeugs und einer Gegenplatte die zu bearbeitenden Bögen bearbeitet werden, und einer Auslagestation, in der bearbeitete Bögen abgelegt werden, wobei die Bögen durch eine Bogentransporteinrichtung einzeln und schrittweise nacheinander von der Anlagestation zur Bearbeitungsstation bewegt, in der Bearbeitungsstation der Einwirkung des Stanz- oder Prägewerkzeugs ausgesetzt und anschließend von der Bearbeitungsstation zur Auslagestation bewegt werden.A punching or embossing machine is understood to mean a device for punching sheet-like material, in particular made of paper or cardboard, with at least one system station in which sheets to be processed are provided, a processing area in which a punching or embossing tool and a Counter-plate, the sheets to be processed are processed, and a delivery station in which processed sheets are deposited, the sheets being moved individually and step-by-step from the system station to the processing station by a sheet transport device, exposed in the processing station to the action of the punching or embossing tool and then from the processing station can be moved to the delivery station.

Die DE 1 045 778 B offenbart einen Stanzautomat für bogenförmiges Material, wie Pappe, Papier od. dgl., bei welchem die Bogen mittels Greiferstangen von der Arbeitsstelle, wo die Bogen ausgestanzt werden, mindestens einer weiteren Stelle zugeführt werden, wo die Abfälle ausgebrochen werden, wobei der das Stanzen des Materials bewirkenden Arbeitsstelle wenigstens zwei lösbar hintereinander angeordnete, als Einzelaggregate in Baukastenform ausgebildete Auswerferstellen nachgeschaltet sind, deren Antriebsmittel für die Auswerfer mit den Antriebsmitteln der ersten Arbeitsstelle gekuppelt sind.The DE 1 045 778 B discloses an automatic punching machine for sheet-like material, such as cardboard, paper or the like, in which the sheets are fed by means of gripper bars from the workstation where the sheets are punched out to at least one other location where the waste is broken out, the punching of the Materials effecting work station at least two detachably arranged one behind the other, designed as individual units in modular form, are connected downstream, the drive means for the ejectors are coupled to the drive means of the first work station.

Die Gattungsbildende EP 1 466 851 A2 beschreibt in Absatz [0003] eine bekannte Stanzmaschine, bei der eine durchgehende, wenigstens über zwei Arbeitspositionen, seitlich der Bewegungsbahn der Stanzbögen verlaufende Greiferzange zwei Stanzbögen seitlich jeweils erfasst und gemeinsam zur jeweils nächsten Arbeitsposition transportiert, wobei dann die Greiferzange nach Ablage der Stanzbögen wieder in die Ausgangsposition zurückkehrt. Weil die Greiferzange beide Bögen gleichzeitig ergreift und hält, können beide Bögen auch nur gleichzeitig abgelegt werden. Mit einer derartigen Anordnung ist die ordnungsgemäße Ablage eines bereits bearbeiteten Bogens in der Auslagestation nur dann möglich, wenn die Bögen dort auf einem ruhenden Untergrund abgelegt, beispielsweise übereinander gestapelt werden. Dies bedingt, dass die Bögen danach aus der Auslagestation auch wieder einzeln nacheinander entnommen werden müssen, beispielsweise um durch das Stanzen aus dem Bogen geschnittenen Nutzen auszubrechen und vom Abfall zu trennen. Hierdurch ergibt sich eine erhebliche zeitliche Verzögerung.The generic EP 1 466 851 A2 describes in paragraph [0003] a known punching machine in which a continuous gripper, running at least over two working positions, to the side of the path of movement of the punched sheets, grasps two punched sheets laterally and transports them together to the next working position returns to the starting position. Because the gripper grips and holds both sheets at the same time, both sheets can only be deposited at the same time. With such an arrangement, a sheet that has already been processed can only be properly deposited in the delivery station if the sheets are deposited there on a stationary surface, for example stacked one on top of the other. This means that the sheets must then be removed from the delivery station one after the other, for example in order to break out copies cut from the sheet by punching and to separate them from the waste. This results in a considerable time delay.

Ausgehend von diesem Stand der Technik sollen ein verbessertes Bogenbearbeitungsverfahren sowie eine verbesserte Stanz- oder Prägemaschine angegeben werden, mit denen eine gleichmäßigere und schnellere Weiterverarbeitung der Bögen ermöglicht wird.Based on this prior art, an improved sheet processing method and an improved punching or embossing machine are to be specified, with which a more uniform and faster further processing of the sheets is made possible.

Diese Aufgabe wird verfahrensseitig durch ein Bogenbearbeitungsverfahren mit den Merkmalen des Anspruchs 1 und vorrichtungsseitig durch eine Stanz- oder Prägemaschine mit den Merkmalen des Anspruchs 6 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen sind Gegenstand der abhängigen Ansprüche.This task is procedurally through a Sheet processing method with the features of claim 1 and achieved on the device side by a punching or embossing machine with the features of claim 6. Advantageous refinements and developments are the subject of the dependent claims.

Vorgeschlagen wird daher zunächst ein Bogenbearbeitungsverfahren für Bögen aus Papier, Karton, Kunststoff oder dergleichen, bei dem eine Anlagestation zur Bereitstellung zu bearbeitender Bögen, eine Bearbeitungsstation zur Bearbeitung eines darin angeordneten Bogens und eine Auslagestation zur Ablage bearbeiteter Bögen in einem Bogentransportpfad hintereinander bereitgestellt werden, und wiederholt nacheinander

  • in der Anlagestation ein zu bearbeitender Bogen und in der Bearbeitungsstation ein bereits bearbeiteter Bogen durch eine Bogengreifeinrichtung ergriffen wird,
  • der zu bearbeitende Bogen aus der Anlagestation in die Bearbeitungsstation bewegt und abgelegt wird und gleichzeitig der bearbeitete Bogen aus der Bearbeitungsstation in die Auslagestation bewegt und abgelegt wird, und
  • der in der Bearbeitungsstation befindliche zu bearbeitende Bogen bearbeitet wird, wobei
  • der zu bearbeitende Bogen in der Bearbeitungsstation erst zum Stillstand gebracht und dann abgelegt wird, während
  • der bearbeitete Bogen in der Auslagestation aus der Bewegung heraus abgelegt wird
und wobei die Bogengreifeinrichtung mindestens zwei getrennt voneinander steuerbare Greifelemente aufweist.Therefore, first of all, a sheet processing method for sheets made of paper, cardboard, plastic or the like is proposed, in which a system station for providing sheets to be processed, a processing station for processing a sheet arranged therein and a delivery station for depositing processed sheets in a sheet transport path are provided one behind the other, and repeats one after the other
  • A sheet to be processed is gripped in the system station and a sheet that has already been processed is gripped by a sheet gripping device in the processing station,
  • the sheet to be processed is moved from the plant station into the processing station and deposited and at the same time the processed sheet is moved from the processing station into the delivery station and deposited, and
  • the sheet to be processed located in the processing station is processed, wherein
  • the sheet to be processed is first brought to a standstill in the processing station and then deposited while
  • the processed sheet is deposited in the delivery station while moving
and wherein the sheet gripping device has at least two separately controllable gripping elements.

Im Gegensatz zu den bisher bekannten Lösungen ermöglicht es das vorgeschlagene Verfahren, die beiden Bögen unabhängig voneinander abzulegen, wodurch eine Beschleunigung des gesamten Verfahrensablaufs insbesondere dadurch ermöglicht, dass in der Auslagestation ein mit einer Fördergeschwindigkeit kontinuierlich arbeitender Förderer zum Weitertransport eines Bogens bereitgestellt wird, auf den der bearbeitete Bogen abgelegt wird. Die bereits bearbeiteten, d.h. gestanzten oder/und geprägten Bögen müssen nun in der Auslagestation nicht mehr aus dem Stillstand erneut beschleunigt werden bzw. separat von einem Stapel abgezogen werden, um die Nutzen aus dem Abfall auszubrechen und von diesem zu trennen, sondern die Bögen können ohne Unterbrechung direkt an eine im Bogentransportpfad an die Auslagestation anschließend angeordnete Ausbrechstation weitergeleitet werden, wobei ein Verrutschen des Bogens auf dem Förderer dadurch verhindert wird, dass die Ablage des Bogens auf dem Förderer aus der Bewegung heraus erfolgt, wodurch eine wesentliche Erhöhung der Produktivität erreicht werden kann.In contrast to the previously known solutions, the proposed method enables the two sheets to be deposited independently of one another, which enables the entire process sequence to be accelerated, in particular by providing a conveyor that operates continuously at a conveying speed in the delivery station for the further transport of a sheet onto which the processed sheet is deposited. The already processed, ie punched and / or embossed sheets now no longer have to be accelerated again from standstill in the delivery station or removed separately from a stack in order to break out the benefits from the waste and separate from it, but the sheets can can be forwarded without interruption directly to a stripping station arranged in the sheet transport path to the delivery station, whereby the sheet is prevented from slipping on the conveyor by the fact that the sheet is deposited on the conveyor while in motion, whereby a significant increase in productivity can be achieved can.

Besonders vorteilhaft kann dabei vorgesehen sein, dass der zu bearbeitende Bogen und der bearbeitete Bogen mit einer Transportgeschwindigkeit bewegt werden, die zumindest beim Ablegen, d.h. in dem Moment des Ablegens des bearbeiteten Bogens in der Auslagestation zumindest annähernd der Fördergeschwindigkeit des Förderers entspricht, denn je geringer die Relativgeschwindigkeit zwischen dem Förderer und dem darauf abgelegten bearbeiteten Bogen im Moment des Ablegens ist, desto geringer ist die Neigung des bearbeiteten Bogens, auf dem Förderer zu verrutschen.It can particularly advantageously be provided that the sheet to be processed and the processed sheet are moved at a transport speed that at least approximately corresponds to the conveying speed of the conveyor, at least when depositing, ie at the moment of depositing the processed sheet in the delivery station, than ever lower the relative speed between the conveyor and the processed sheet placed on it at the moment of The lower the tendency of the processed sheet to slip on the conveyor.

Die Gefahr eines ungewollten Verrutschens des auf dem Förderer abgelegten Bogens kann weiter dadurch eingedämmt werden, dass der bearbeitete Bogen durch Erzeugung einer Luftdruckdifferenz zwischen einer Oberseite und einer Unterseite des Bogens auf dem Förderer gehalten wird, beispielsweise indem an der Unterseite des Bogens ein Unterdruck erzeugt wird, so dass der Bogen durch den umgebenden Luftdruck auf den Förderer gedrückt wird. Alternativ oder zusätzlich kann vorgesehen sein, dass der bearbeitete Bogen durch die Erzeugung mindestens einer auf eine Oberseite des Bogens einwirkenden Kraft auf dem Förderer gehalten wird, beispielsweise durch einen Niederhalter, der mit einem Abstand über dem Förderer gehalten wird, welcher der Dicke des transportierten Bogens entspricht.The risk of unwanted slipping of the sheet placed on the conveyor can be further reduced by holding the processed sheet on the conveyor by generating an air pressure difference between an upper side and a lower side of the sheet, for example by generating a negative pressure on the lower side of the sheet so that the sheet is pressed onto the conveyor by the surrounding air pressure. Alternatively or additionally, it can be provided that the processed sheet is held on the conveyor by generating at least one force acting on an upper side of the sheet, for example by a hold-down device that is held above the conveyor at a distance that corresponds to the thickness of the sheet being transported corresponds to.

Zur Durchführung des Verfahrens wird weiterhin eine Stanz- oder Prägemaschine vorgeschlagen, die

  • in einem Bogentransportpfad hintereinander angeordnet eine Anlagestation, eine Bearbeitungsstation und eine Auslagestation, und
  • eine zum Ergreifen, Bewegen und Ablegen zweier Bögen ausgebildete Bogentransporteinrichtung umfasst, die mindestens eine parallel zu dem Bogentransportpfad angeordnete Linearführung und eine entlang der Linearführung zwischen einer ersten Umkehrpositionen und einer zweiten Umkehrpositionen hin und her bewegbare Bogengreifeinrichtung aufweist, wobei
  • in der ersten Umkehrposition die Bogengreifeinrichtung in der Anlagestation und in der Bearbeitungsstation positioniert ist, um je einen Bogen zu ergreifen, und
  • in der zweiten Umkehrposition die Bogengreifeinrichtung in der Bearbeitungsstation und in der Auslagestation positioniert ist, um je einen Bogen abzulegen, wobei
  • die Bogengreifeinrichtung dazu ausgebildet ist, einen Bogen in der Bearbeitungsstation abzulegen, wenn die Bogengreifeinrichtung in der zweiten Umkehrposition zum Stillstand gekommen ist, und einen Bogen in der Auslagestation abzulegen, während sich die Bogengreifeinrichtung der zweiten Umkehrposition nähert und wobei
  • die Bogengreifeinrichtung mindestens zwei getrennt voneinander steuerbare Greifelemente aufweist.
To carry out the method, a punching or embossing machine is also proposed which
  • A plant station, a processing station and a delivery station arranged one behind the other in a sheet transport path, and
  • comprises a sheet transport device designed to grasp, move and deposit two sheets, which has at least one linear guide arranged parallel to the sheet transport path and a sheet gripping device which can be moved back and forth along the linear guide between a first reversal position and a second reversal position, wherein
  • in the first reversal position the sheet gripping device is positioned in the contact station and in the processing station in order to each grasp a sheet, and
  • in the second reversing position, the sheet gripping device is positioned in the processing station and in the delivery station in order to deposit one sheet each, wherein
  • the sheet gripping device is designed to deposit a sheet in the processing station when the sheet gripping device has come to a standstill in the second reversing position, and to deposit a sheet in the delivery station while the sheet gripping device approaches the second reversing position and wherein
  • the sheet gripping device has at least two separately controllable gripping elements.

Die vorgeschlagene Stanz- oder Prägemaschine trägt weiterhin der Tatsache Rechnung, dass der zu bearbeitende Bogen in der Bearbeitungsstation sehr passgenau abgelegt werden muss, was dadurch realisiert wird, dass die Bogengreifeinrichtung den Bogen erst freigibt, wenn sie im zweiten Umkehrpunkt zum Stillstand gekommen ist.The proposed punching or embossing machine also takes into account the fact that the sheet to be processed must be deposited very precisely in the processing station, which is achieved by the sheet gripping device only releasing the sheet when it has come to a standstill at the second reversal point.

Demgegenüber wird der aus der Bearbeitungsstation entnommene, bereits bearbeitete Bogen von der Bogengreifeinrichtung bereits während der Bewegung freigegeben, wodurch ein nahtloser Weitertransport ermöglicht wird. Dieser Weitertransport kann beispielsweise durch eine hinter der Bearbeitungsstation angeordnete zweite Bogengreifeinrichtung realisiert sein, welche den Bogen noch während der Bewegung der ersten Bogengreifeinrichtung von dieser übernimmt.In contrast, the already processed sheet removed from the processing station is already released by the sheet gripping device during the movement, which enables seamless further transport. This further transport can be implemented, for example, by a second sheet gripping device which is arranged behind the processing station and which still holds the sheet takes over from this during the movement of the first sheet gripping device.

Die Bogengreifeinrichtung weist erfindungsgemäß mindestens zwei getrennt voneinander steuerbare Greifelemente auf, so dass eines der Greifelemente den zu bearbeitenden Bogen nach dem Stillstand der Bogengreifeinrichtung in der Bearbeitungsstation freigibt und das andere Greifelement den bearbeiteten Bogen aus der Bewegung heraus noch vor Erreichen der zweiten Umkehrposition freigibt. Greifelemente in diesem Sinne können beispielsweise Greifzangen, Sauggreifer usw. sein.According to the invention, the sheet gripping device has at least two separately controllable gripping elements, so that one of the gripping elements releases the sheet to be processed after the sheet gripping device has come to a standstill in the processing station and the other gripping element releases the processed sheet before it reaches the second reversing position. Gripping elements in this sense can be gripping tongs, suction grippers, etc., for example.

Beispielsweise kann die Bogengreifeinrichtung eine gemeinsame Grundschiene aufweisen, mit der die mindestens zwei Greifelemente zusammenwirken, um entweder gemeinsam oder unabhängig voneinander je einen Bogen zu ergreifen und anschließend entweder gemeinsam oder unabhängig voneinander je einen Bogen abzulegen. Am Beispiel des Standes der Technik gemäß EP 1 466 851 A2 erläutert könnte also die Oberschiene, die relativ zu der Unterschiene zwischen einer Schließstellung, in der die beiden Bögen festgeklemmt sind, und einer Öffnungsstellung, in der die beiden Bögen freigegeben werden, hin und her bewegbar ist, in zwei Teilschienen unterteilt sein, die separat ansteuerbar sind, um den jeweiligen Bogen individuell ergreifen oder/und loslassen zu können.For example, the sheet gripping device can have a common base rail with which the at least two gripping elements cooperate in order to grasp a sheet either jointly or independently of one another and then to deposit a sheet either jointly or independently of one another. Using the example of the prior art according to EP 1 466 851 A2 explained, the upper rail, which can be moved back and forth relative to the lower rail between a closed position in which the two arches are clamped, and an open position in which the two arches are released, could be divided into two partial rails which can be controlled separately in order to be able to individually grasp and / or let go of the respective bow.

Wie oben bereits beschrieben kann der Weitertransport des bearbeiteten Bogens aus der Auslagestation beispielsweise durch eine hinter der Bearbeitungsstation angeordnete zweite Bogengreifeinrichtung realisiert sein. Alternativ und besonders vorteilhaft kann jedoch auch vorgesehen sein, dass in der Auslagestation ein mit einer Fördergeschwindigkeit kontinuierlich arbeitender Förderer zum Weitertransport eines Bogens angeordnet ist. Ein solcher Förderer kann beispielsweise ein Walzenförderer sein, der eine Mehrzahl von quer zur Transportrichtung angeordneten Transportwalzen umfasst, die in einer horizontalen Ebene hintereinander angeordnet sind und deren oberste Mantellinien eine Transportebene für die bearbeiteten Bögen definieren. Alternativ kann es sich um einen Band- oder Riemenförderer handeln, der ein flächiges Transportband oder einen oder mehrere relativ schmale Transportriemen aufweist, die um mindestens zwei Umlenkwalzen oder Umlenkrollen geführt sind und deren Obertrums jeweils die Transportebene der Bögen definieren.As already described above, the further transport of the processed sheet from the delivery station can be implemented, for example, by a second sheet gripping device arranged behind the processing station. Alternatively and particularly advantageously, however, it can also be provided that A conveyor operating continuously at a conveying speed is arranged in the delivery station for the further transport of a sheet. Such a conveyor can for example be a roller conveyor which comprises a plurality of transport rollers arranged transversely to the transport direction, which are arranged one behind the other in a horizontal plane and whose top surface lines define a transport plane for the processed sheets. Alternatively, it can be a belt or belt conveyor that has a flat conveyor belt or one or more relatively narrow conveyor belts that are guided around at least two deflection rollers or deflection rollers and whose upper runs each define the transport plane of the sheets.

Vorteilhaft ist vorgesehen, dass die Bogengreifeinrichtung sich zwischen der ersten Umkehrposition und der zweiten Umkehrposition mit einer Transportgeschwindigkeit bewegt, die zumindest beim Ablegen, d.h. in dem Moment des Ablegens des bearbeiteten Bogens in der Auslagestation zumindest annähernd der Fördergeschwindigkeit des Förderers entspricht, wie oben bereits mit Bezug zum vorgeschlagenen Verfahren näher erläutert wurde.It is advantageously provided that the sheet gripping device moves between the first reversing position and the second reversing position at a transport speed which at least approximately corresponds to the conveying speed of the conveyor, at least when depositing, i.e. at the moment of depositing the processed sheet in the delivery station, as already mentioned above Reference to the proposed method was explained in more detail.

Weiter vorteilhaft kann vorgesehen sein, dass der Förderer zur Erzeugung eines Unterdrucks an der Unterseite des Bogens ausgebildet ist. Dies kann beispielsweise dadurch realisiert sein, dass der Förderer ein Bandförderer mit einem perforierten Band und einem darunter angeordneten Saugkasten ist. Alternativ oder zusätzlich kann oberhalb des Förderers mindestens ein auf eine Oberseite des Bogens einwirkendes Andruckmittel, beispielsweise eine oder mehrere Andruckrollen, angeordnet sein.It can further advantageously be provided that the conveyor is designed to generate a negative pressure on the underside of the sheet. This can be implemented, for example, in that the conveyor is a belt conveyor with a perforated belt and a suction box arranged below it. Alternatively or additionally, at least one pressure means acting on an upper side of the sheet, for example one or more, can be located above the conveyor Pressure rollers, be arranged.

Schließlich kann bei der vorgeschlagenen Stanz- oder Prägemaschine vorgesehen sein, dass die mindestens zwei Greifelemente mit einer gemeinsam wirkenden Betätigungseinrichtung zum Ergreifen des jeweiligen Bogens sowie mit getrennt wirkenden Betätigungseinrichtungen zum Ablegen des jeweiligen Bogens in Wirkverbindung stehen. Dadurch wird auf einfache Weise sichergestellt, dass beide Greifelemente in der ersten Umkehrposition die beiden Bögen gleichzeitig ergreifen, wodurch das Verharren der Bogengreifeinrichtung in dieser Position auf die geringstmögliche Dauer begrenzt werden kann. Am Ende des Bewegungsvorgangs von der ersten zur zweiten Umkehrposition hingegen können die beiden Bögen zu unterschiedlichen Zeitpunkten freigegeben werden. So kann der bereits bearbeitete Bogen aus der Bewegung heraus in die Auslagestation abgelegt werden, während der noch zu bearbeitende Bogen erst nach dem Stillstand der Bogengreifeinrichtung in der Bearbeitungsstation abgelegt wird.Finally, in the proposed punching or embossing machine, it can be provided that the at least two gripping elements are in operative connection with a jointly acting actuating device for gripping the respective sheet and with separately acting actuating devices for depositing the respective sheet. This ensures in a simple manner that both gripping elements grasp the two sheets simultaneously in the first reversal position, whereby the pause of the sheet gripping device in this position can be limited to the shortest possible duration. At the end of the movement from the first to the second reversal position, however, the two arches can be released at different times. In this way, the already processed sheet can be deposited in the delivery station while moving, while the sheet still to be processed is only deposited in the processing station after the sheet gripping device has come to a standstill.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. Darin zeigen die Fig. 1 bis 8 verschiedene Verfahrensschritte an einer Stanz- oder Prägemaschine.The invention is explained in more detail below using an exemplary embodiment and associated drawings. In it they show Figures 1 to 8 various process steps on a punching or embossing machine.

Die in den Fig. 1 bis 8 dargestellte Stanz- oder Prägemaschine 1 umfasst eine diskontinuierlich arbeitende Anlagestation 11, eine diskontinuierlich arbeitende Bearbeitungsstation 12 und eine kontinuierlich arbeitende Auslagestation 13. Seitlich neben der Anlagestation 11, der Bearbeitungsstation 12 und der Auslagestation 13 und damit parallel zu einem Bogentransportpfad, entlang dessen Bögen 31, 32 durch die Stanz- oder Prägemaschine 1 bewegt werden, erstreckt sich eine zum Greifen, Bewegen und Loslassen zweier Bögen 31, 32 ausgebildete Bogentransporteinrichtung, die eine parallel zu einem Bogentransportpfad angeordnete Linearführung 24 und eine entlang der Linearführung 24 zwischen einer ersten Umkehrpositionen und einer zweiten Umkehrpositionen hin und her bewegbare Bogengreifeinrichtung mit einer gemeinsamen Grundschiene 23, die im Ausführungsbeispiel die Unterschiene ist, und zwei separat ansteuerbaren Greifelementen 21, 22, die im Ausführungsbeispiel Teilschienen der Oberschiene sind, die mit der gemeinsamen Grundschiene 23 zusammenwirken, um je einen Bogen 31, 32 an einem seitlichen Rand zu ergreifen.The ones in the Figures 1 to 8 The punching or embossing machine 1 shown comprises a discontinuously working system station 11, a discontinuously working processing station 12 and a continuously working delivery station 13. Laterally next to the system station 11, the processing station 12 and the delivery station 13 and thus parallel to a sheet transport path, along whose sheets 31, 32 are moved by the punching or embossing machine 1, extends a sheet transport device designed for gripping, moving and releasing two sheets 31, 32, which has a linear guide 24 and a linear guide arranged parallel to a sheet transport path the linear guide 24 between a first reversal position and a second reversal position back and forth movable sheet gripping device with a common base rail 23, which is the lower rail in the embodiment, and two separately controllable gripping elements 21, 22, which are part of the upper rail in the embodiment, which are connected to the common Base rail 23 cooperate in order to each grip a sheet 31, 32 on a lateral edge.

Seitlich neben der Stanz- oder Prägemaschine 1 ist im Bereich der Anlagestation 11 ein Bogenstapel 4 angeordnet, durch den die zu verarbeitenden Bögen 31 an der Maschine bereitgestellt und der Anlagestation 11 einzeln zugeführt werden.To the side of the punching or embossing machine 1, a sheet stack 4 is arranged in the area of the contact station 11, by means of which the sheets 31 to be processed are made available on the machine and fed individually to the contact station 11.

In Fig. 1 ist die Bogengreifeinrichtung in einer ersten Umkehrposition angeordnet, in welcher ein erstes Greifelement 21 zum Ergreifen eines zu bearbeitenden Bogens 31 in der Anlagestation 11 und ein zweites Greifelement 22 zum Ergreifen eines bearbeiteten Bogens 32 in der Bearbeitungsstation 12 positioniert ist. Beide Greifelemente 21, 22 sind geöffnet und somit zum Ergreifen je eines Bogens 31, 32 bereit.In Fig. 1 the sheet gripping device is arranged in a first reversal position, in which a first gripping element 21 for gripping a sheet 31 to be processed in the contact station 11 and a second gripping element 22 for gripping a processed sheet 32 is positioned in the processing station 12. Both gripping elements 21, 22 are open and thus ready to grasp one sheet 31, 32 each.

Fig. 2 zeigt, wie ein zu bearbeitender Bogen 31 vom Bogenstapel 4 entnommen und quer zum Bogentransportpfad in die Anlagestation 11 bewegt wird, während in der Bearbeitungsstation 12 ein bereits bearbeiteter, d.h. geprägter oder gestanzter Bogen 32 so liegt, dass er von dem zweiten Greifelement 22 ergriffen werden kann. In Fig. 3 ist auch der zu bearbeitende Bogen 31 in der Anlagestation 11 so zum Liegen gekommen, dass er von dem ersten Greifelement 21 ergriffen werden kann. Fig. 2 shows how a sheet 31 to be processed is removed from the sheet stack 4 and moved transversely to the sheet transport path in the plant station 11, while in the Processing station 12 an already processed, ie embossed or punched sheet 32 lies in such a way that it can be gripped by the second gripping element 22. In Fig. 3 the sheet 31 to be processed has also come to a rest in the contact station 11 in such a way that it can be gripped by the first gripping element 21.

Fig. 4 zeigt, wie das erste Greifelement 21 den in der Anlagestation 11 liegenden zu bearbeitenden Bogen 31 ergreift und das zweite Greifelement 22 den in der Bearbeitungsstation 12 liegenden bearbeiteten Bogen 32 ergreift. Das Ergreifen erfolgt gleichzeitig, indem beide Greifelemente 21, 22 durch eine gemeinsame Betätigungseinrichtung gleichzeitig geschlossen werden, so dass beide Bögen 31, 32 an einem seitlichen, d.h. parallel zum Bogentransportpfad verlaufenden Rand ergriffen werden. Fig. 4 shows how the first gripping element 21 grips the sheet 31 to be processed lying in the contact station 11 and the second gripping element 22 grips the processed sheet 32 lying in the processing station 12. The gripping takes place simultaneously in that both gripping elements 21, 22 are closed simultaneously by a common actuating device, so that both sheets 31, 32 are gripped on a lateral edge, that is to say parallel to the sheet transport path.

Fig. 5 zeigt, wie die Bogengreifeinrichtung mit den geschlossenen Greifelementen 21, 22 und beiden Bögen 31, 32 aus der ersten Umkehrposition in Richtung auf die zweite Umkehrposition zu bewegt wird. In Fig. 6 ist dargestellt, wie das zweite Greifelement 22 durch eine separate Betätigungseinrichtung geöffnet wird und den bearbeiteten Bogen 32 auf einem in der Auslagestation 13 angeordneten kontinuierlichen Förderer ablegt, der sich mit der gleichen Geschwindigkeit bewegt wie die Bogengreifeinrichtung, während sich die Bogengreifeinrichtung der zweiten Umkehrposition nähert, d.h. noch bevor die zweite Umkehrposition erreicht ist. Von diesem Zeitpunkt an wird nur noch der zu bearbeitende Bogen 31 durch das erste Greifelement 21 der Bogengreifeinrichtung bewegt, während der bearbeitete Bogen 32 durch den kontinuierlichen Förderer weiterbewegt wird. Fig. 5 shows how the sheet gripping device with the closed gripping elements 21, 22 and both sheets 31, 32 is moved from the first reversing position in the direction of the second reversing position. In Fig. 6 it is shown how the second gripping element 22 is opened by a separate actuating device and deposits the processed sheet 32 on a continuous conveyor arranged in the delivery station 13, which conveyor moves at the same speed as the sheet gripping device, while the sheet gripping device approaches the second reversing position, ie before the second reversal position is reached. From this point on, only the sheet 31 to be processed is moved by the first gripping element 21 of the sheet gripping device, while the processed sheet 32 is moved by the continuous conveyor is moved on.

Fig. 7 zeigt den Moment, in dem die Bogengreifeinrichtung die zweite Umkehrposition erreicht und dort zum Stillstand kommt. Das erste Greifelement 21 legt den zu bearbeitenden Bogen 31 in der Bearbeitungsstation 12 ab, indem das erste Greifelement 21 durch eine separate Betätigungseinrichtung geöffnet wird. Beide Greifelemente 21, 22 sind jetzt geöffnet, und der bearbeitete Bogen 32 wird durch den in der Auslagestation 13 angeordneten kontinuierlichen Förderer weiterbewegt. Fig. 7 shows the moment at which the sheet gripping device reaches the second reversing position and comes to a standstill there. The first gripping element 21 deposits the sheet 31 to be processed in the processing station 12 in that the first gripping element 21 is opened by a separate actuating device. Both gripping elements 21, 22 are now open, and the processed sheet 32 is moved on by the continuous conveyor arranged in the delivery station 13.

Wie Fig. 8 zeigt, verlässt der bearbeitete Bogen 32 auf dem Förderer die Stanz- oder Prägemaschine 1, beispielsweise um einer Ausbrechstation zugeführt zu werden, während die Bogengreifeinrichtung mit den beiden Greifelementen 21, 22 in die erste Umkehrposition zurückbewegt wird und der zu bearbeitende Bogen 31 in der Bearbeitungsstation 12 bearbeitet, d.h. geprägt oder gestanzt wird. Anschließend wiederholen sich die beschriebenen Schritte erneut.How Fig. 8 shows, the processed sheet 32 on the conveyor leaves the punching or embossing machine 1, for example to be fed to a stripping station, while the sheet gripping device with the two gripping elements 21, 22 is moved back into the first reversal position and the sheet 31 to be processed is in the processing station 12 processed, that is, embossed or punched. The steps described are then repeated again.

BezugszeichenlisteList of reference symbols

11
Stanz- oder PrägemaschinePunching or embossing machine
1111
AnlagestationPlant station
1212th
BearbeitungsstationProcessing station
1313th
AuslagestationDelivery station
2121
erstes Greifelementfirst gripping element
2222nd
zweites Greifelementsecond gripping element
2323
gemeinsame Grundschienecommon base rail
2424
LinearführungLinear guide
3131
zu bearbeitender Bogensheet to be processed
3232
bearbeiteter Bogenprocessed arch
44th
BogenstapelStack of sheets

Claims (13)

  1. Sheet processing method for sheets of paper, cardboard, plastic or the like, in which sheet processing method an input station (11) for the provision of sheets for processing (31), a processing station (12) for processing a sheet (31, 32) arranged therein, and an output station (13) for the setting-down of processed sheets (32) are provided one behind the other in a sheet transport path, and, repeatedly in series,
    • in the input station (11), a sheet for processing (31), and in the processing station (12), an already-processed sheet (32), are gripped by a sheet gripping device (21, 22, 23),
    • the sheet for processing (31) is moved from the input station (11) into the processing station (12) and is set down, and the processed sheet (32) is moved from the processing station (12) into the output station (13) and is set down, and
    • the sheet for processing (31) is processed in the processing station (12),
    wherein
    • the sheet for processing (31) is, in the processing station (12), firstly brought to a standstill and then set down, whereas
    • the processed sheet (32) is, in the output station (13), set down from a moving state,
    and wherein the sheet gripping device (21, 22, 23) has at least two gripping elements (21, 22) which are controllable separately from one another.
  2. Sheet processing method according to Claim 1, in which, in the output station (13), a conveyor which operates continuously with a conveying speed is provided for the onward transport of a sheet, onto which conveyor the processed sheet (32) is set down.
  3. Sheet processing method according to Claim 2, in which the sheet for processing (31) and the processed sheet (32) are moved with a transport speed which, at least during the setting-down of the processed sheet (32) in the output station (13), at least approximately corresponds to the conveying speed of the conveyor.
  4. Sheet processing method according to Claim 2 or 3, in which the processed sheet (32) is held on the conveyor by generation of an air pressure difference between a top side and a bottom side of the processed sheet (32).
  5. Sheet processing method according to any of Claims 2 to 4, in which the processed sheet (32) is held on the conveyor by the generation of at least one force which acts on a top side of the processed sheet (32).
  6. Punching or stamping machine (1), comprising
    • an input station (11), a processing station (12) and an output station (13) arranged one behind the other in a sheet transport path, and
    • a sheet transport device which is designed for gripping, moving and setting down two sheets (31, 32), which sheet transport device has at least one linear guide (24) arranged parallel to the sheet transport path and has a sheet gripping device (21, 22, 23) which is movable back and forth along the linear guide (24) between a first reversal position and a second reversal position, wherein,
    • in the first reversal position, the sheet gripping device (21, 22, 23) is positioned in the input station (11) and in the processing station (12) in order to grip in each case one sheet (31, 32), and
    • in the second reversal position, the sheet gripping device (21, 22, 23) is positioned in the processing station (12) and in the output station (13) in order to set down in each case one sheet (31, 32), wherein
    • the sheet gripping device (21, 22, 23) is designed to set down a sheet for processing (31) in the processing station (12) when the sheet gripping device (21, 22, 23) has come to a standstill in the second reversal position, and to set down a processed sheet (32) in the output station (13) as the sheet gripping device (21, 22, 23) approaches the second reversal position, and wherein
    • the sheet gripping device (21, 22, 23) has at least two gripping elements (21, 22) which are controllable separately from one another.
  7. Punching or stamping machine according to Claim 6, in which the sheet gripping device (21, 22, 23) has a common base rail (23) with which the at least two gripping elements (21, 22) interact in order to independently of one another grip in each case one sheet (31, 32) and/or in order to independently of one another set down in each case one sheet (31, 32) .
  8. Punching or stamping machine according to Claim 6 or 7, in which a conveyor which operates continuously with a conveying speed and which serves for the onward transport of a sheet (32) is arranged in the output station (13).
  9. Punching or stamping machine according to any of Claims 6 to 8, in which the sheet gripping device (21, 22, 23) moves between the first reversal position and the second reversal position with a transport speed which, at least during the setting down of the processed sheet (32) in the output station (13), at least approximately corresponds to the conveying speed of the conveyor.
  10. Punching or stamping machine according to Claim 8 or 9, in which the conveyor is designed to generate a negative pressure at the bottom side of the processed sheet (32).
  11. Punching or stamping machine according to Claim 10, in which the conveyor is a belt-type conveyor with a perforated belt and with a suction box arranged under said belt.
  12. Punching or stamping machine according to any of Claims 8 to 11, in which, above the conveyor, there is arranged at least one pressure-exerting means which acts on a top side of the processed sheet (32) .
  13. Punching or stamping machine according to any of Claims 6 to 12, in which the at least two gripping elements (21, 22) are operatively connected to a jointly acting actuating device for gripping the respective sheet (31, 32) and to separately acting actuating devices for setting down the respective sheet (31, 32).
EP17194373.1A 2017-10-02 2017-10-02 Punch or embossing and sheet processing method Active EP3461606B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP17194373.1A EP3461606B1 (en) 2017-10-02 2017-10-02 Punch or embossing and sheet processing method
US16/130,518 US10821624B2 (en) 2017-10-02 2018-09-13 Punching or stamping machine and sheet processing method
CN201811119194.1A CN109591100B (en) 2017-10-02 2018-09-25 Punching or stamping machine and sheet processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17194373.1A EP3461606B1 (en) 2017-10-02 2017-10-02 Punch or embossing and sheet processing method

Publications (2)

Publication Number Publication Date
EP3461606A1 EP3461606A1 (en) 2019-04-03
EP3461606B1 true EP3461606B1 (en) 2021-04-28

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EP17194373.1A Active EP3461606B1 (en) 2017-10-02 2017-10-02 Punch or embossing and sheet processing method

Country Status (3)

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US (1) US10821624B2 (en)
EP (1) EP3461606B1 (en)
CN (1) CN109591100B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111996301B (en) * 2020-08-21 2021-10-22 苏州帅泽信息科技有限公司 Hexagonal leather cutting device for football production

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1045778B (en) * 1955-05-24 1958-12-04 Bobst & Sohn A G J Automatic punching machine for sheet material
CH582573A5 (en) * 1974-07-16 1976-12-15 Bobst Fils Sa J
DE19807587C1 (en) * 1998-02-23 1999-04-29 Manfred Vossen Paper handling machine having grip rods feed-advancing through one level
DE10317022B4 (en) 2003-04-11 2006-04-06 Zimmel, Jürgen Device for punching
DE102006049111A1 (en) * 2006-10-18 2008-04-30 Heidelberger Druckmaschinen Ag Flatbed sheet punching machine
CN201227669Y (en) * 2008-06-27 2009-04-29 汕头超声印制板公司 Automatic press device
WO2011041320A2 (en) * 2009-09-30 2011-04-07 Ross Industries, Inc. Method and apparatus for sealing containers
DE102015201325A1 (en) * 2014-02-21 2015-08-27 Heidelberger Druckmaschinen Ag Method and device for holding down a sheet on the feed table of a sheet-processing machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20190099911A1 (en) 2019-04-04
EP3461606A1 (en) 2019-04-03
US10821624B2 (en) 2020-11-03
CN109591100A (en) 2019-04-09
CN109591100B (en) 2022-05-27

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