EP4368357A1 - Knife holder for cutting machines - Google Patents

Knife holder for cutting machines Download PDF

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Publication number
EP4368357A1
EP4368357A1 EP22206056.8A EP22206056A EP4368357A1 EP 4368357 A1 EP4368357 A1 EP 4368357A1 EP 22206056 A EP22206056 A EP 22206056A EP 4368357 A1 EP4368357 A1 EP 4368357A1
Authority
EP
European Patent Office
Prior art keywords
knife
knife holder
carrier
holder
rotation
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.)
Pending
Application number
EP22206056.8A
Other languages
German (de)
French (fr)
Inventor
Tony Chiarvaloti
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.)
Dienes Werke fuer Maschinenteile GmbH and Co KG
Original Assignee
Dienes Werke fuer Maschinenteile 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 Dienes Werke fuer Maschinenteile GmbH and Co KG filed Critical Dienes Werke fuer Maschinenteile GmbH and Co KG
Priority to EP22206056.8A priority Critical patent/EP4368357A1/en
Priority to US18/504,396 priority patent/US20240149483A1/en
Publication of EP4368357A1 publication Critical patent/EP4368357A1/en
Pending 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/16—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like
    • B26D1/165—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
    • B26D1/185—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage for thin material, e.g. for sheets, strips or the like
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/04—Means for moving the cutting member into its operative position for cutting by fluid pressure
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B26D5/06—Means for moving the cutting member into its operative position for cutting by electrical means
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member

Definitions

  • the present invention relates to a knife holder for cutting machines, with a knife carrier mounted so as to be rotatable about a rotation axis for holding a knife, in particular for holding a circular knife, and an adjusting device for the knife carrier, wherein the knife carrier can be driven by the adjusting device parallel to the rotation axis between a ready position and a cutting position.
  • the knife holder is in particular a knife holder for a longitudinal cutting machine in which a plurality of identical knife holders are attached to a crossbar of the longitudinal cutting machine.
  • a housing of the knife holder has an attachment device with which the knife holder can be attached to the crossbar.
  • the knife holder comprises a lowering device with which a knife head having the knife carrier can be positioned orthogonally to the axis of rotation of the knife carrier onto a counter knife.
  • the knife head With the lowering device, the knife head can be positioned in a lowering direction, in particular onto at least one Lower knives can be moved towards and away from each other.
  • the knife holder has several knife heads, each with a knife carrier, which can be adjusted together to at least one lower knife using exactly one lowering device, in particular each knife head can be adjusted to exactly one lower knife.
  • the knife carrier can be rotatably mounted in the housing, so that the knife carrier cannot be adjusted orthogonally to the axis of rotation.
  • the knife carrier and thus a circular knife carried by the knife carrier can be positioned parallel to the axis of rotation of the knife carrier and thus parallel to the axis of rotation of the circular knife onto a cutting edge of a counter knife.
  • the knife holder comprises a lowering device
  • one embodiment can provide for the positioning device to be part of the knife head, which can be positioned orthogonally to the axis of rotation of the knife carrier onto the counter knife by the lowering device.
  • a straight drive direction of the positioning device is thus aligned orthogonally to the lowering direction.
  • the knife can be positioned in its axial direction, i.e. in particular in a straight line, onto a cutting edge of a lower knife.
  • the knife carrier and thus the circular knife can be force-controlled against a counter knife both orthogonally to the axis of rotation by means of the lowering device and parallel to the axis of rotation by means of the adjusting device, whereby the cutting force can be kept constant during the cutting process.
  • the adjustment device can be operated pneumatically, it can happen that the knife executes an evasive movement during the cutting process due to additional operating forces.
  • a knife holder with the features of the preamble of claim 1 is known, in which a piston rod of the lowering device can be fixed in the lowered position of the knife head, so that the knife cannot perform an evasive movement orthogonal to the axis of rotation of the knife during the cutting process.
  • the object of the present invention is to eliminate the disadvantages described with reference to the prior art and in particular to provide a knife holder in which the knife carrier or the knife carried by the knife carrier is reliably held in the desired cutting position during the cutting process.
  • a knife holder with the features mentioned at the outset, which comprises a fixing device with which the knife carrier can be fixed in the cutting position, in particular mechanically, against a movement parallel to the axis of rotation.
  • the knife holder comprises a device referred to as a fixing device, with which the knife carrier can be fixed in the direction in which the knife carrier can be adjusted by the adjusting device to a counter knife, independently of the adjusting device.
  • the knife holder thus has a unit with the fixing device that can be operated independently of the adjusting device and possibly also independently of a lowering device, which in particular acts at least indirectly on an element of the adjusting device, so that the element of the adjusting device is fixed in its position in a fixing state of the fixing device.
  • the knife carrier it is thus possible for the knife carrier to be transferred into a cutting position by means of the adjusting device parallel to the axis of rotation, in particular in a force-controlled manner, wherein the knife carrier is securely fixed in the cutting position by means of the fixing device. It is accepted here that no force-controlled regulation of the cutting force is possible during the cutting process.
  • the fixing device fixes the knife carrier in the cutting position with a force and/or form fit.
  • an undercut design or recess can be provided, into which an element of the fixing device engages, so that the component having the undercut design or the recess cannot be moved relative to the element of the fixing device.
  • the undercut design or the recess can be formed in particular on an element of the adjusting device.
  • at least one element of the fixing device can be pressed with a relatively large force onto a Knife carrier connected element so that the element is clamped by the at least one element of the fixing device.
  • the fixing device can in particular be actuated mechanically, electrically, pneumatically or hydraulically.
  • the fixing device can in particular comprise at least one fixing element (i.e. exactly one fixing element or several fixing elements) which can be transferred between a fixed state and a released state, wherein in the fixed state the knife holder is fixed, while in the released state the knife holder can be moved parallel to the axis of rotation by a drive of the adjusting device.
  • the at least one fixing element which in the fixed state interacts with another element in a force-locking and/or form-locking manner can, for example, be pre-tensioned by means of a spring and can be actuated by means of an electrical, pneumatic or hydraulic drive.
  • the at least one fixing element is pre-tensioned into the fixed state by means of the spring element and can be transferred into the released state by means of the drive.
  • the at least one fixing element can be transferred into the fixed state mechanically, electrically, pneumatically or hydraulically.
  • the adjusting device for transferring the knife carrier from the ready position to the cutting position and, if necessary, back can comprise an actuator/drive which can be operated electrically, pneumatically or hydraulically.
  • the adjusting device can comprise at least one membrane which can be pneumatically actuated to actuate the adjusting device.
  • a pressurized fluid, in particular compressed air can be introduced between the two membranes.
  • the adjusting device can be provided with a piston that is directly pneumatically actuated.
  • the piston can be actuated with compressed air on one end face for adjustment in one direction.
  • the piston has at least one annular projection that projects in the radial direction, the axial end face of which can be actuated with compressed air to actuate the piston.
  • the pneumatically actuated piston is the adjusting piston described below.
  • an electric motor can be provided by means of which the knife carrier can be moved electromechanically between the ready position and the cutting position parallel to the axis of rotation.
  • the electric motor is preferably a stepper motor.
  • the adjusting device can in particular comprise an adjusting piston, relative to which the knife carrier is rotatably mounted.
  • the actuator of the adjusting device acts indirectly or directly on the adjusting piston in order to move the knife carrier between the cutting position and the ready position.
  • the adjusting piston in particular comprises a bearing section with which the adjusting piston is mounted in a sleeve-shaped bearing so as to be linearly displaceable in the direction or parallel to the axis of rotation.
  • the adjusting piston is moved linearly in the sleeve-shaped bearing.
  • the sleeve-shaped bearing is in particular a component of the knife head, so that the sleeve-shaped bearing and the adjusting device can be moved orthogonally to the axis of rotation of the knife carrier by the lowering device.
  • the fixing device acts directly mechanically on the adjusting piston.
  • the actuator of the adjusting device can be actuated pneumatically
  • the fixing device can act on a section of the adjusting piston that is designed concentrically to the bearing section arranged in the sleeve-shaped bearing.
  • the adjusting piston can thus have a section that protrudes beyond the sleeve-shaped bearing both in the ready position and in the cutting position, whereby the fixing device can act on the adjusting piston in this protruding section.
  • the adjusting device comprises an electric motor drive
  • the adjusting piston comprises a fixing section which is offset in the radial direction from the bearing section, wherein the fixing device acts on the fixing section.
  • the actuator of the adjusting device is arranged in the axial extension of the bearing section of the adjusting piston and the fixing section, which is in particular formed in one piece with the bearing section, is arranged radially offset from the bearing section.
  • the fixing section can be arranged outside the sleeve-shaped bearing. The drive of the adjusting device and the fixing device can thus be offset in the radial direction of the bearing section. to each other.
  • both the actuator of the adjusting device and the fixing device are immovably connected to the sleeve-shaped bearing for the bearing section of the adjusting piston, so that the adjusting piston can be moved into the bearing by the actuator and the adjusting piston can be fixed by the fixing device.
  • the knife holder 1 shown in the figures comprises a housing 11, by means of which the knife holder 1 can be attached to a cross member of a longitudinal cutting machine.
  • the knife holder 1 also comprises a knife head 10, which is lowered in the housing 11 by means of a lowering device 9 in the Figure 1 can be lowered downwards.
  • the lowerable knife head 10 comprises a knife carrier 2, which is mounted so as to be rotatable about a rotation axis 4 to an adjusting piston 7 of an adjusting device 3.
  • the adjusting piston 7 is mounted in a bearing 8 so as to be linearly displaceable in the direction of the axis of rotation 4.
  • the adjusting device 3 also comprises an actuator 6, which in the embodiment shown in the figures is designed as an electric motor.
  • the bearing piston 7 and thus the knife carrier 2 can be moved parallel to the axis of rotation 4 between a ready position and a cutting position by means of the actuator 6.
  • the bearing piston 7 comprises a fixing section 7.2 which is arranged radially offset from the bearing section 7.1, whereby the fixing section 7.2 can extend next to the actuator 6.
  • the knife holder 1 also comprises a fixing device 5, into which the fixing section 7.2 of the adjusting piston 7 engages.
  • the fixing device 5 comprises a fixing element which can be transferred between a fixing state and a released state. In the fixing state, the fixing section 7.2 of the adjusting piston 7 is clamped in a force-fitting manner by the fixing element, so that the entire adjusting piston 7 is fixed in its position.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

Die Erfindung betrifft einen Messerhalter (1) für Schneidmaschinen, mit einem um eine Drehachse drehbar gelagerten Messerträger (2) zur Halterung eines Messers und einer Anstellvorrichtung (3) für den Messerträger (2), wobei der Messerträger (2) von der Anstellvorrichtung (3) parallel zu der Drehachse (4) zwischen einer Bereithaltestellung und einer Schneidstellung antreibbar ist, und wobei der Messerhalter (1) eine Fixiervorrichtung (5) umfasst, mit der der Messerträger (2) in der Schneidstellung in Richtung der Drehachse (3) fixierbar ist.The invention relates to a knife holder (1) for cutting machines, with a knife carrier (2) which is mounted so as to be rotatable about an axis of rotation for holding a knife and with an adjusting device (3) for the knife carrier (2), wherein the knife carrier (2) can be driven by the adjusting device (3) parallel to the axis of rotation (4) between a ready position and a cutting position, and wherein the knife holder (1) comprises a fixing device (5) with which the knife carrier (2) can be fixed in the cutting position in the direction of the axis of rotation (3).

Description

Die vorliegende Erfindung betrifft einen Messerhalter für Schneidmaschinen, mit einem um eine Drehachse drehbar gelagerten Messerträger zur Halterung eines Messers, insbesondere zur Halterung eines Rundmessers, und einer Anstellvorrichtung für den Messerträger, wobei der Messerträger von der Anstellvorrichtung parallel zu der Drehachse zwischen einer Bereithaltestellung und einer Schneidstellung antreibbar ist.The present invention relates to a knife holder for cutting machines, with a knife carrier mounted so as to be rotatable about a rotation axis for holding a knife, in particular for holding a circular knife, and an adjusting device for the knife carrier, wherein the knife carrier can be driven by the adjusting device parallel to the rotation axis between a ready position and a cutting position.

Bei dem Messerhalter handelt es sich insbesondere um einen Messerhalter für eine Längsschneidemaschine, bei der eine Vielzahl von gleichartigen Messerhaltern an einer Traverse der Längsschneidemaschine befestigt sind. Zur Befestigung eines Messerhalters an der Traverse weist ein Gehäuse des Messerhalters eine Anbringungsvorrichtung auf, mit der der Messerhalter an der Traverse befestigt werden kann.The knife holder is in particular a knife holder for a longitudinal cutting machine in which a plurality of identical knife holders are attached to a crossbar of the longitudinal cutting machine. In order to attach a knife holder to the crossbar, a housing of the knife holder has an attachment device with which the knife holder can be attached to the crossbar.

In einer Ausführungsform kann vorgesehen sein, dass der Messerhalter eine Absenkvorrichtung umfasst, mit der ein den Messerträger aufweisender Messerkopf orthogonal zu der Drehachse des Messerträgers auf ein Gegenmesser zustellbar ist. Mit der Absenkvorrichtung kann der Messerkopf insbesondere in einer Absenkrichtung insbesondere auf mindestens ein Untermesser zu und fort bewegt werden. Es kann auch vorgesehen sein, dass der Messerhalter mehrere Messerköpfe mit jeweils einem Messerträger aufweist, die gemeinsamen mit genau einer Absenkungsvorrichtung auf mindestens ein Untermesser zustellbar sind, insbesondere kann jeder Messerkopf auf genau ein Untermesser zustellbar sein. In einer alternativen Ausführungsform kann der Messerträger in dem Gehäuse drehbar gelagert sein, so dass der Messerträger nicht orthogonal zu der Drehachse angestellt werden kann.In one embodiment, it can be provided that the knife holder comprises a lowering device with which a knife head having the knife carrier can be positioned orthogonally to the axis of rotation of the knife carrier onto a counter knife. With the lowering device, the knife head can be positioned in a lowering direction, in particular onto at least one Lower knives can be moved towards and away from each other. It can also be provided that the knife holder has several knife heads, each with a knife carrier, which can be adjusted together to at least one lower knife using exactly one lowering device, in particular each knife head can be adjusted to exactly one lower knife. In an alternative embodiment, the knife carrier can be rotatably mounted in the housing, so that the knife carrier cannot be adjusted orthogonally to the axis of rotation.

Mit der Anstellvorrichtung kann der Messerträger und somit ein von dem Messerträger getragenes Rundmesser parallel zu der Drehachse des Messerträgers und somit parallel zu der Drehachse des Rundmessers auf eine Schneidkante eines Gegenmessers zugestellt werden. Sofern der Messerhalter eine Absenkvorrichtung umfasst, kann in einer Ausführungsform vorgesehen sein, dass die Anstellvorrichtung Bestandteil des Messerkopfes ist, der von der Absenkvorrichtung orthogonal zu der Drehachse des Messerträgers auf das Gegenmesser zustellbar ist. Somit ist insbesondere eine geradlinige Antriebsrichtung der Anstellvorrichtung orthogonal zu der Absenkrichtung ausgerichtet. Mit der Anstellvorrichtung kann das Messer in seiner axialen Richtung also insbesondere geradlinig an eine Schneidkante eines Untermessers angestellt werden.With the positioning device, the knife carrier and thus a circular knife carried by the knife carrier can be positioned parallel to the axis of rotation of the knife carrier and thus parallel to the axis of rotation of the circular knife onto a cutting edge of a counter knife. If the knife holder comprises a lowering device, one embodiment can provide for the positioning device to be part of the knife head, which can be positioned orthogonally to the axis of rotation of the knife carrier onto the counter knife by the lowering device. In particular, a straight drive direction of the positioning device is thus aligned orthogonally to the lowering direction. With the positioning device, the knife can be positioned in its axial direction, i.e. in particular in a straight line, onto a cutting edge of a lower knife.

Aus dem Stand der Technik ist bekannt, dass der Messerträger und damit das Rundmesser sowohl orthogonal zu der Drehachse mittels der Absenkvorrichtung als auch parallel zu der Drehachse mittels der Anstellvorrichtung kraftgesteuert an ein Gegenmesser angestellt werden kann, wodurch während des Schneidvorgangs die Schnittkraft konstant gehalten werden kann. Insbesondere wenn die Absenkvorrichtung und/oder die Anstellvorrichtung pneumatisch betätigbar sind, kann es aber vorkommen, dass aufgrund weiterer Betriebskräfte das Messer während des Schneidvorgangs eine Ausweichbewegung ausführt.It is known from the prior art that the knife carrier and thus the circular knife can be force-controlled against a counter knife both orthogonally to the axis of rotation by means of the lowering device and parallel to the axis of rotation by means of the adjusting device, whereby the cutting force can be kept constant during the cutting process. In particular, if the lowering device and/or the However, since the adjustment device can be operated pneumatically, it can happen that the knife executes an evasive movement during the cutting process due to additional operating forces.

Aus der DE 20 2006 010 874 U1 ist ein Messerhalter mit den Merkmalen des Oberbegriffs des Anspruchs 1 bekannt, bei der eine Kolbenstange der Absenkvorrichtung in der abgesenkten Stellung des Messerkopfes festgelegt werden kann, so dass das Messer während des Schneidvorganges keine Ausweichbewegung orthogonal zu der Drehachse des Messers ausführen kann.From the DE 20 2006 010 874 U1 A knife holder with the features of the preamble of claim 1 is known, in which a piston rod of the lowering device can be fixed in the lowered position of the knife head, so that the knife cannot perform an evasive movement orthogonal to the axis of rotation of the knife during the cutting process.

Aufgabe der vorliegenden Erfindung ist es, die mit Bezug zum Stand der Technik geschilderten Nachteile zu beseitigen und insbesondere einen Messerhalter anzugeben, bei dem der Messerträger beziehungsweise das von dem Messerträger getragene Messer während des Schneidvorganges zuverlässig in der gewünschten Schnittposition gehalten wird.The object of the present invention is to eliminate the disadvantages described with reference to the prior art and in particular to provide a knife holder in which the knife carrier or the knife carried by the knife carrier is reliably held in the desired cutting position during the cutting process.

Eine Lösung für die Aufgabe ist mit dem Messerhalter mit den Merkmalen des unabhängigen Anspruchs angegeben. Weitere Lösungen sowie vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen sowie in der vorstehenden und nachfolgenden Beschreibung angegeben, wobei einzelne Merkmale der vorteilhaften Weiterbildungen in technisch sinnvoller Weise miteinander kombinierbar sind.A solution to the problem is specified with the knife holder with the features of the independent claim. Further solutions and advantageous developments are specified in the dependent claims and in the above and following description, whereby individual features of the advantageous developments can be combined with one another in a technically reasonable manner.

Gelöst wird die Aufgabe insbesondere durch einen Messerhalter mit den eingangs genannten Merkmalen, welcher eine Fixiervorrichtung umfasst, mit der der Messerträger in der Schneidstellung gegen eine Bewegung parallel zu der Drehachse insbesondere mechanisch fixierbar ist.The object is achieved in particular by a knife holder with the features mentioned at the outset, which comprises a fixing device with which the knife carrier can be fixed in the cutting position, in particular mechanically, against a movement parallel to the axis of rotation.

Mit anderen Worten: Die Erfindung sieht in ihrem Grundgedanken vor, dass der Messerhalter eine als Fixiervorrichtung bezeichnete Einrichtung umfasst, mit welcher der Messerträger in der Richtung, in der der Messerträger von der Anstellvorrichtung an ein Gegenmesser anstellbar ist, unabhängig von der Anstellvorrichtung festgesetzt werden kann. Der Messerhalter weist mit der Fixiervorrichtung also eine unabhängig von der Anstellvorrichtung und gegebenenfalls auch unabhängig von einer Absenkvorrichtung betätigbare Einheit auf, welche insbesondere zumindest indirekt auf ein Element der Anstellvorrichtung wirkt, so dass das Element der Anstellvorrichtung in einem Fixierzustand der Fixiervorrichtung in seiner Lage fixiert ist. Somit ist es möglich, dass der Messerträger mittels der Anstellvorrichtung parallel zu der Drehachse insbesondere kraftgesteuert in eine Schneidstellung überführbar ist, wobei der Messerträger in der Schneidstellung mittels der Fixiervorrichtung sicher festgelegt ist. Hierbei wird hingenommen, dass während des Schneidvorganges keine kraftgesteuerte Regelung der Schnittkraft möglich ist.In other words: The basic idea of the invention is that the knife holder comprises a device referred to as a fixing device, with which the knife carrier can be fixed in the direction in which the knife carrier can be adjusted by the adjusting device to a counter knife, independently of the adjusting device. The knife holder thus has a unit with the fixing device that can be operated independently of the adjusting device and possibly also independently of a lowering device, which in particular acts at least indirectly on an element of the adjusting device, so that the element of the adjusting device is fixed in its position in a fixing state of the fixing device. It is thus possible for the knife carrier to be transferred into a cutting position by means of the adjusting device parallel to the axis of rotation, in particular in a force-controlled manner, wherein the knife carrier is securely fixed in the cutting position by means of the fixing device. It is accepted here that no force-controlled regulation of the cutting force is possible during the cutting process.

In einer bevorzugten Ausführungsform fixiert die Fixiervorrichtung den Messerträger kraft- und/oder formschlüssig in der Schneidstellung. Für eine formschlüssige Fixierung kann eine Hinterschnittgestaltung oder Ausnehmung vorgesehen sein, in die ein Element der Fixiervorrichtung eingreift, so dass das die Hinterschnittgestaltung oder die Ausnehmung aufweisende Bauelement nicht relativ zu dem Element der Fixiervorrichtung bewegbar ist. Die Hinterschnittgestaltung beziehungsweise die Ausnehmung kann insbesondere an einem Element der Anstellvorrichtung ausgebildet sein. Für eine kraftschlüssige Fixierung des Messerträgers kann mindestens ein Element der Fixiervorrichtung mit einer relativ großen Kraft auf ein mit dem Messerträger verbundenes Element wirken, so dass das Element von dem mindestens einem Element der Fixiervorrichtung eingeklemmt wird.In a preferred embodiment, the fixing device fixes the knife carrier in the cutting position with a force and/or form fit. For a form fit, an undercut design or recess can be provided, into which an element of the fixing device engages, so that the component having the undercut design or the recess cannot be moved relative to the element of the fixing device. The undercut design or the recess can be formed in particular on an element of the adjusting device. For a force fit of the knife carrier, at least one element of the fixing device can be pressed with a relatively large force onto a Knife carrier connected element so that the element is clamped by the at least one element of the fixing device.

Die Fixiervorrichtung kann insbesondere mechanisch, elektrisch, pneumatisch oder hydraulisch betätigbar sein. Die Fixiervorrichtung kann insbesondere mindestens ein Fixierelement (also genau ein Fixierelement oder mehrere Fixierelemente) umfassen, das zwischen einem Fixierzustand und einem gelösten Zustand überführbar ist, wobei in dem Fixierzustand der Messerhalter fixiert ist, während in dem gelösten Zustand der Messerhalter durch einen Antrieb der Anstellvorrichtung parallel zu der Drehachse bewegbar ist. Das mindestens eine im Fixierzustand kraft- und/oder formschlüssig mit einem weiteren Element zusammenwirkende Fixierelement kann beispielsweise mittels einer Feder vorgespannt sein und mittels eines elektrischen, pneumatischen oder hydraulischen Antriebs betätigbar sein. Hierbei kann vorgesehen sein, dass das mindestens eine Fixierelement mittels des Federelements in den Fixierzustand vorgespannt ist und mittels des Antriebs in den gelösten Zustand überführbar ist. Es kann alternativ aber auch vorgesehen sein, dass das mindestens eine Fixierelement mechanisch, elektrisch, pneumatisch oder hydraulisch in den Fixierzustand überführbar ist.The fixing device can in particular be actuated mechanically, electrically, pneumatically or hydraulically. The fixing device can in particular comprise at least one fixing element (i.e. exactly one fixing element or several fixing elements) which can be transferred between a fixed state and a released state, wherein in the fixed state the knife holder is fixed, while in the released state the knife holder can be moved parallel to the axis of rotation by a drive of the adjusting device. The at least one fixing element which in the fixed state interacts with another element in a force-locking and/or form-locking manner can, for example, be pre-tensioned by means of a spring and can be actuated by means of an electrical, pneumatic or hydraulic drive. In this case, it can be provided that the at least one fixing element is pre-tensioned into the fixed state by means of the spring element and can be transferred into the released state by means of the drive. Alternatively, it can also be provided that the at least one fixing element can be transferred into the fixed state mechanically, electrically, pneumatically or hydraulically.

Die Anstellvorrichtung zur Überführung des Messerträgers aus der Bereithaltestellung in die Schneidstellung und gegebenenfalls zurück kann einen Aktuator/einen Antrieb umfassen, welcher elektrisch, pneumatisch oder hydraulisch betätigbar ist.The adjusting device for transferring the knife carrier from the ready position to the cutting position and, if necessary, back can comprise an actuator/drive which can be operated electrically, pneumatically or hydraulically.

Im Falle einer pneumatischen Betätigung der Anstellvorrichtung kann die Anstellvorrichtung mindestens eine Membran umfassen, die zur Betätigung der Anstellvorrichtung pneumatisch beaufschlagbar ist. Insbesondere zwischen die zwei Membranen kann ein druckbeaufschlagtes Fluid, insbesondere Druckluft, einbringbar sein. Durch die Verwendung von zwei Membranen kann auf einfache Weise ein luftdicht abgeschlossener Raum zur Einleitung von Druckluft bereitgestellt werden.In the case of a pneumatic actuation of the adjusting device, the adjusting device can comprise at least one membrane which can be pneumatically actuated to actuate the adjusting device. In particular A pressurized fluid, in particular compressed air, can be introduced between the two membranes. By using two membranes, an airtight space for the introduction of compressed air can be easily provided.

Alternativ kann zur pneumatischen Betätigung vorgesehen sein, dass die Anstellvorrichtung einen Kolben aufweist, der direkt pneumatisch beaufschlagt wird. Der Kolben kann beispielsweise zur Anstellung in eine Richtung an einer Stirnseite mit Druckluft beaufschlagt werden. Es kann zudem vorgesehen sein, dass der Kolben mindestens einen ringförmigen, in radialer Richtung auskragenden Vorsprung aufweist, dessen axialen Stirnfläche zur Betätigung des Kolbens mit Druckluft beaufschlagt werden können. Insbesondere ist der pneumatisch betätigbare Kolben der weiter unten beschriebene Anstellkolben.Alternatively, for pneumatic actuation, the adjusting device can be provided with a piston that is directly pneumatically actuated. For example, the piston can be actuated with compressed air on one end face for adjustment in one direction. It can also be provided that the piston has at least one annular projection that projects in the radial direction, the axial end face of which can be actuated with compressed air to actuate the piston. In particular, the pneumatically actuated piston is the adjusting piston described below.

Zur Ausbildung eines elektrisch betätigbaren Aktuators kann ein Elektromotor vorgesehen sein, mittels dem der Messerträger elektromechanisch zwischen der Bereithaltestellung und der Schneidstellung parallel zu der Drehachse bewegbar ist. Bevorzugt ist der Elektromotor ein Schrittmotor.To form an electrically actuated actuator, an electric motor can be provided by means of which the knife carrier can be moved electromechanically between the ready position and the cutting position parallel to the axis of rotation. The electric motor is preferably a stepper motor.

Die Anstellvorrichtung kann insbesondere einen Anstellkolben umfassen, zu dem der Messerträger drehbar gelagert ist. Der Aktuator der Anstellvorrichtung wirkt indirekt oder direkt auf den Anstellkolben, um den Messerträger zwischen der Schneidstellung und der Bereithaltestellung zu bewegen. Der Anstellkolben umfasst insbesondere einen Lagerabschnitt, mit dem der Anstellkolben in einer hülsenförmigen Lagerung in Richtung beziehungsweise parallel zu der Drehachse linear verschiebbar gelagert ist.The adjusting device can in particular comprise an adjusting piston, relative to which the knife carrier is rotatably mounted. The actuator of the adjusting device acts indirectly or directly on the adjusting piston in order to move the knife carrier between the cutting position and the ready position. The adjusting piston in particular comprises a bearing section with which the adjusting piston is mounted in a sleeve-shaped bearing so as to be linearly displaceable in the direction or parallel to the axis of rotation.

Während der Überführung des Messerträgers von der Bereithaltestellung in die Schneidstellung wird der Anstellkolben also linear in der hülsenförmigen Lagerung verschoben. Die hülsenförmige Lagerung ist insbesondere Bestandteil des Messerkopfes, so dass die hülsenförmige Lagerung und die Anstellvorrichtung durch die Absenkvorrichtung orthogonal zu der Drehachse des Messerträgers bewegbar sind.During the transfer of the knife carrier from the ready position to the cutting position, the adjusting piston is moved linearly in the sleeve-shaped bearing. The sleeve-shaped bearing is in particular a component of the knife head, so that the sleeve-shaped bearing and the adjusting device can be moved orthogonally to the axis of rotation of the knife carrier by the lowering device.

Es kann nun vorgesehen sein, dass die Fixiervorrichtung unmittelbar mechanisch auf den Anstellkolben wirkt. Insbesondere wenn der Aktuator der Anstellvorrichtung pneumatisch betätigbar ist, kann die Fixiervorrichtung auf einen konzentrisch zu dem in der hülsenförmigen Lagerung angeordneten Lagerabschnitt ausgebildeten Abschnitt des Anstellkolbens wirken. So kann der Anstellkolben einen Abschnitt aufweisen, der sowohl in der Bereithaltestellung als auch in der Schneidstellung über die hülsenförmige Lagerung hinaussteht, wobei die Fixiervorrichtung in diesem überstehenden Abschnitt auf den Anstellkolben wirken kann.It can now be provided that the fixing device acts directly mechanically on the adjusting piston. In particular, if the actuator of the adjusting device can be actuated pneumatically, the fixing device can act on a section of the adjusting piston that is designed concentrically to the bearing section arranged in the sleeve-shaped bearing. The adjusting piston can thus have a section that protrudes beyond the sleeve-shaped bearing both in the ready position and in the cutting position, whereby the fixing device can act on the adjusting piston in this protruding section.

Insbesondere wenn die Anstellvorrichtung einen elektromotorischen Antrieb umfasst, kann vorgesehen sein, dass der Anstellkolben einen Fixierabschnitt umfasst, welcher zu dem Lagerabschnitt in radialer Richtung versetzt ist, wobei die Fixiervorrichtung auf den Fixierabschnitt wirkt. In diesem Fall kann insbesondere vorgesehen sein, dass der Aktor der Anstellvorrichtung in axialer Verlängerung des Lagerabschnitts des Anstellkolbens angeordnet ist und der insbesondere einteilig mit dem Lagerabschnitt ausgebildete Fixierabschnitt radial versetzt zu dem Lagerabschnitt angeordnet ist. Der Fixiertabschnitt kann dabei außerhalb der hülsenförmige Lagerung angeordnet sein. Somit können der Antrieb der Anstellvorrichtung und die Fixiervorrichtung in radialer Richtung des Lagerabschnitts versetzt zueinander angeordnet sein. In diesem Zusammenhang ist insbesondere vorgesehen, dass sowohl der Aktuator der Anstellvorrichtung als auch die Fixiervorrichtung unbeweglich mit der hülsenförmigen Lagerung für den Lagerabschnitt des Anstellkolbens verbunden sind, so dass der Anstellkolben durch den Aktuator in das Lager bewegt werden kann, und der Anstellkolben durch die Fixiervorrichtung fixiert werden kann.In particular, if the adjusting device comprises an electric motor drive, it can be provided that the adjusting piston comprises a fixing section which is offset in the radial direction from the bearing section, wherein the fixing device acts on the fixing section. In this case, it can be provided in particular that the actuator of the adjusting device is arranged in the axial extension of the bearing section of the adjusting piston and the fixing section, which is in particular formed in one piece with the bearing section, is arranged radially offset from the bearing section. The fixing section can be arranged outside the sleeve-shaped bearing. The drive of the adjusting device and the fixing device can thus be offset in the radial direction of the bearing section. to each other. In this context, it is particularly provided that both the actuator of the adjusting device and the fixing device are immovably connected to the sleeve-shaped bearing for the bearing section of the adjusting piston, so that the adjusting piston can be moved into the bearing by the actuator and the adjusting piston can be fixed by the fixing device.

Die Erfindung sowie das technische Umfeld werden im Folgenden anhand der Figuren beispielhaft erläutert. Es zeigen schematisch

Figur 1:
einen Messerhalter,
Figur 2:
eine Querschnittsansicht durch einen Messerkopf des Messerhalters und
Figur 3:
eine Detailansicht des Messerkopfes.
The invention and the technical environment are explained below using the figures as examples. They show schematically
Figure 1:
a knife holder,
Figure 2:
a cross-sectional view through a knife head of the knife holder and
Figure 3:
a detailed view of the knife head.

Der in den Figuren dargestellte Messerhalter 1 umfasst ein Gehäuse 11, mittels welchem der Messerhalter 1 an einer Traverse einer Längsschneidemaschine befestigt werden kann.The knife holder 1 shown in the figures comprises a housing 11, by means of which the knife holder 1 can be attached to a cross member of a longitudinal cutting machine.

Der Messerhalter 1 umfasst zudem einen Messerkopf 10, welcher mittels einer in dem Gehäuse 11 angeordneten Absenkvorrichtung 9 in der Figur 1 nach unten abgesenkt werden kann.The knife holder 1 also comprises a knife head 10, which is lowered in the housing 11 by means of a lowering device 9 in the Figure 1 can be lowered downwards.

Wie insbesondere aus Figur 2 hervorgeht, umfasst der absenkbare Messerkopf 10 einen Messerträger 2, welcher um eine Drehachse 4 drehbar zu einem Anstellkolben 7 einer Anstellvorrichtung 3 gelagert ist. Der Anstellkolben 7 ist in Richtung der Drehachse 4 linear verschieblich in einer Lagerung 8 gelagert.As is particularly evident from Figure 2 As can be seen, the lowerable knife head 10 comprises a knife carrier 2, which is mounted so as to be rotatable about a rotation axis 4 to an adjusting piston 7 of an adjusting device 3. The adjusting piston 7 is mounted in a bearing 8 so as to be linearly displaceable in the direction of the axis of rotation 4.

Die Anstellvorrichtung 3 umfasst zudem einen Aktuator 6, der in dem Ausführungsbeispiel der Figuren als Elektromotor ausgebildet ist. Der Lagerkolben 7 und damit der Messerträger 2 können mittels des Aktuators 6 parallel zu der Drehachse 4 zwischen einer Bereithaltestellung und einer Schneidstellung bewegt werden.The adjusting device 3 also comprises an actuator 6, which in the embodiment shown in the figures is designed as an electric motor. The bearing piston 7 and thus the knife carrier 2 can be moved parallel to the axis of rotation 4 between a ready position and a cutting position by means of the actuator 6.

Der Lagerkolben 7 umfasst neben einem in der Lagerung 8 angeordneten zentralen Lagerabschnitt 7.1 einen Fixierabschnitt 7.2, der radial versetzt zu dem Lagerabschnitt 7.1 angeordnet ist, wodurch sich der Fixierabschnitt 7.2 neben den Aktuator 6 erstrecken kann.In addition to a central bearing section 7.1 arranged in the bearing 8, the bearing piston 7 comprises a fixing section 7.2 which is arranged radially offset from the bearing section 7.1, whereby the fixing section 7.2 can extend next to the actuator 6.

Der Messerhalter 1 umfasst zudem eine Fixiervorrichtung 5, in welche der Fixierabschnitt 7.2 des Anstellkolbens 7 eingreift. Die Fixiervorrichtung 5 umfasst ein Fixierelement, welches zwischen einem Fixierungszustand und einem gelösten Zustand überführbar ist. In dem Fixierungszustand wird der Fixierabschnitt 7.2. des Anstellkolbens 7 von dem Fixierelement kraftschlüssig eingeklemmt, so dass der gesamte Anstellkolben 7 in seiner Position festgesetzt ist.The knife holder 1 also comprises a fixing device 5, into which the fixing section 7.2 of the adjusting piston 7 engages. The fixing device 5 comprises a fixing element which can be transferred between a fixing state and a released state. In the fixing state, the fixing section 7.2 of the adjusting piston 7 is clamped in a force-fitting manner by the fixing element, so that the entire adjusting piston 7 is fixed in its position.

Es wird somit ermöglicht, dass der Messerträger 2 und damit ein auf dem Messerträger 2 befestigtes Rundmesser mittels des Aktuators 6 kraftgesteuert in Richtung der Drehachse auf ein Gegenmesser zugestellt werden kann, wobei nach Erreichen der insbesondere durch eine Schnittkraft vorgegebenen Schneidstellung der Messerträger 2 mittels der Fixiervorrichtung 5 in seiner Position fixiert werden kann. Während des Schneidvorgangs kann sich somit der Messerträger 2 nicht parallel zu der Drehachse 4 bewegen, wodurch auch auf den Aktuator 6 wirkende Kräfte während des Schneidvorgangs reduziert werden.This makes it possible for the knife carrier 2 and thus a circular knife attached to the knife carrier 2 to be force-controlled in the direction of the axis of rotation to be fed onto a counter knife by means of the actuator 6, whereby after reaching the cutting position, which is predetermined in particular by a cutting force, the knife carrier 2 can be fixed in its position by means of the fixing device 5. During the cutting process, the knife carrier 2 does not move parallel to the axis of rotation 4, which also reduces the forces acting on the actuator 6 during the cutting process.

BezugszeichenlisteList of reference symbols

11
MesserhalterKnife holder
22
MesserträgerKnife carrier
33
AnstellvorrichtungAdjustment device
44
DrehachseRotation axis
55
FixiervorrichtungFixing device
66
AktuatorActuator
77
AnstellkolbenAdjusting piston
7.17.1
LagerabschnittStorage section
7.27.2
FixierabschnittFixing section
88th
Lagerungstorage
99
AbsenkvorrichtungLowering device
1010
MesserkopfKnife head
1111
GehäuseHousing

Claims (12)

Messerhalter (1) für Schneidmaschinen, mit - einem um eine Drehachse drehbar gelagerten Messerträger (2) zur Halterung eines Messers und - einer Anstellvorrichtung (3) für den Messerträger (2), wobei der Messerträger (2) von der Anstellvorrichtung (3) parallel zu der Drehachse (4) zwischen einer Bereithaltestellung und einer Schneidstellung antreibbar ist, dadurch gekennzeichnet, dass
der Messerhalter (1) eine Fixiervorrichtung (5) umfasst, mit der der Messerträger (2) in der Schneidstellung in Richtung der Drehachse (3) fixierbar ist.Knife holder (1) for cutting machines, with - a knife carrier (2) rotatably mounted about a rotation axis for holding a knife and - an adjusting device (3) for the knife carrier (2), wherein the knife carrier (2) can be driven by the adjusting device (3) parallel to the axis of rotation (4) between a ready position and a cutting position, characterized in that
the knife holder (1) comprises a fixing device (5) with which the knife carrier (2) can be fixed in the cutting position in the direction of the axis of rotation (3). Messerhalter (1) nach Anspruch 1, wobei die Fixiervorrichtung (5) den Messerträger (1) kraft- und/oder formschlüssig in der Schneidstellung fixiert.Knife holder (1) according to claim 1, wherein the fixing device (5) fixes the knife carrier (1) in the cutting position in a force-fitting and/or form-fitting manner. Messerhalter (1) nach Anspruch 1 oder 2, wobei die Fixiervorrichtung (5) mechanisch, elektrisch, pneumatisch und/oder hydraulisch betätigbar ist.Knife holder (1) according to claim 1 or 2, wherein the fixing device (5) can be actuated mechanically, electrically, pneumatically and/or hydraulically. Messerhalter (1) nach einem der vorhergehenden Ansprüche, wobei die Anstellvorrichtung (3) einen elektrisch, pneumatisch oder hydraulisch betätigbaren Aktuator (6) umfasst.Knife holder (1) according to one of the preceding claims, wherein the adjusting device (3) comprises an electrically, pneumatically or hydraulically actuated actuator (6). Messerhalter (1) nach einem der vorhergehenden Ansprüche, wobei die Anstellvorrichtung (3) einen Anstellkolben (7) umfasst, zu dem der Messerträger (2) drehbar gelagert ist.Knife holder (1) according to one of the preceding claims, wherein the adjusting device (3) comprises an adjusting piston (7) to which the knife carrier (2) is rotatably mounted. Messerhalter (1) nach Anspruch 5, wobei die Fixiervorrichtung (5) mechanisch auf den Anstellkolben (7) wirkt.Knife holder (1) according to claim 5, wherein the fixing device (5) acts mechanically on the adjusting piston (7). Messerhalter (1) nach Anspruch 6, wobei der Anstellkolben (7) einen in einer hülsenförmige Lagerung (8) axial verschiebbaren Lagerabschnitt (7.1) und einen zu dem Lagerabschnitt (7.1) in radialer Richtung versetzten Fixierabschnitt (7.2) umfasst, wobei die Fixiervorrichtung (5) auf den Fixierabschnitt (7.2) wirkt.Knife holder (1) according to claim 6, wherein the adjusting piston (7) comprises a bearing section (7.1) which is axially displaceable in a sleeve-shaped bearing (8) and a fixing section (7.2) which is offset in the radial direction relative to the bearing section (7.1), wherein the fixing device (5) acts on the fixing section (7.2). Messerhalter (1) nach einem der vorhergehenden Ansprüche, wobei der Messerhalter (1) eine Steuereinrichtung umfasst, mittels der der Messerträger (2) kraftgesteuert von der Bereithaltestellung in die Schneidstellung überführbar ist.Knife holder (1) according to one of the preceding claims, wherein the knife holder (1) comprises a control device by means of which the knife carrier (2) can be transferred from the ready position into the cutting position in a force-controlled manner. Messerhalter (1) nach einem der vorhergehenden Ansprüche, wobei der Messerhalter (1) eine Absenkvorrichtung (9) für einen den Messerträger (2) aufweisenden Messerkopf (10) umfasst.Knife holder (1) according to one of the preceding claims, wherein the knife holder (1) comprises a lowering device (9) for a knife head (10) having the knife carrier (2). Messerhalter (1) nach Anspruch 9, wobei die Anstellvorrichtung (3) mit dem Messerträger (1) absenkbar ist.Knife holder (1) according to claim 9, wherein the adjusting device (3) can be lowered with the knife carrier (1). Messerhalter (1) nach Anspruch 9 oder 10, wobei der Messerhalter (1) mehrere, jeweils einen Messerträger (2) aufweisenden Messerköpfe (10) umfasst, die gemeinsam mit genau einer Absenkungsvorrichtung (9) absehbar sind.Knife holder (1) according to claim 9 or 10, wherein the knife holder (1) comprises a plurality of knife heads (10), each having a knife carrier (2), which can be seen together with exactly one lowering device (9). Messerhalter (1) nach einem der Ansprüche 1 bis 8, wobei der Messerträger (2) orthogonal zu der Drehachse unverstellbar in einem Gehäuse (11) des Messerhalters (1) gelagert ist.Knife holder (1) according to one of claims 1 to 8, wherein the knife carrier (2) is mounted non-adjustably orthogonal to the axis of rotation in a housing (11) of the knife holder (1).
EP22206056.8A 2022-11-08 2022-11-08 Knife holder for cutting machines Pending EP4368357A1 (en)

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EP22206056.8A EP4368357A1 (en) 2022-11-08 2022-11-08 Knife holder for cutting machines
US18/504,396 US20240149483A1 (en) 2022-11-08 2023-11-08 Knife holder for cutting machines

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114059A1 (en) * 1991-04-30 1992-11-05 Dienes Werke Circular cutter adaptor with quick change facility - has cutter locked on hub by spring-loaded radial locking pins that can be withdrawn by pneumatic pressure
EP0569767A1 (en) * 1992-05-13 1993-11-18 SCHOBER GmbH Werkzeug- und Maschinenbau Knife support
DE10260031B3 (en) * 2002-12-19 2004-08-26 Dienes Werke für Maschinenteile GmbH & Co KG Cutter holder for cutting machine has effective piston surfaces of setting piston of different cross sections in different piston positions
DE202006010874U1 (en) 2006-07-14 2006-09-07 DIENES WERKE FüR MASCHINENTEILE GMBH & CO. KG Device holding circular blade for longitudinal dividing of sheet, comprising pneumatically operated clamping mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114059A1 (en) * 1991-04-30 1992-11-05 Dienes Werke Circular cutter adaptor with quick change facility - has cutter locked on hub by spring-loaded radial locking pins that can be withdrawn by pneumatic pressure
EP0569767A1 (en) * 1992-05-13 1993-11-18 SCHOBER GmbH Werkzeug- und Maschinenbau Knife support
DE10260031B3 (en) * 2002-12-19 2004-08-26 Dienes Werke für Maschinenteile GmbH & Co KG Cutter holder for cutting machine has effective piston surfaces of setting piston of different cross sections in different piston positions
DE202006010874U1 (en) 2006-07-14 2006-09-07 DIENES WERKE FüR MASCHINENTEILE GMBH & CO. KG Device holding circular blade for longitudinal dividing of sheet, comprising pneumatically operated clamping mechanism

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