EP1190821A2 - Oscillating single bladed knives and method of cutting with such knives - Google Patents

Oscillating single bladed knives and method of cutting with such knives Download PDF

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Publication number
EP1190821A2
EP1190821A2 EP01119891A EP01119891A EP1190821A2 EP 1190821 A2 EP1190821 A2 EP 1190821A2 EP 01119891 A EP01119891 A EP 01119891A EP 01119891 A EP01119891 A EP 01119891A EP 1190821 A2 EP1190821 A2 EP 1190821A2
Authority
EP
European Patent Office
Prior art keywords
cutting
knife
transport roller
knives
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.)
Granted
Application number
EP01119891A
Other languages
German (de)
French (fr)
Other versions
EP1190821B1 (en
EP1190821A3 (en
Inventor
Franz Plasswich
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher 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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1190821A2 publication Critical patent/EP1190821A2/en
Publication of EP1190821A3 publication Critical patent/EP1190821A3/en
Application granted granted Critical
Publication of EP1190821B1 publication Critical patent/EP1190821B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/26—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut
    • B26D1/30—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut
    • B26D1/305—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 non-circular cutting member moving about an axis substantially perpendicular to the line of cut with limited pivotal movement to effect cut 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
    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/34—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 non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/42—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 non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member
    • B26D1/425—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 non-circular cutting member moving about an axis parallel to the line of cut and slidably mounted in a rotary member 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
    • B26D11/00—Combinations of several similar cutting apparatus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4708—With means to render cutter pass[es] ineffective
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4812—Compound movement of tool during tool cycle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4812—Compound movement of tool during tool cycle
    • Y10T83/4815—Axial reciprocation of tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9396—Shear type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9408—Spaced cut forming tool

Definitions

  • the invention relates to a cutting and transport roller with an integrated Cutting device according to the preamble of claim 1 and a Method for cutting a material web with the help of such a roller.
  • EP 0 698 571 A2 shows a cutting and transport roller, the one with an outer has slot-shaped opening provided lateral surface and a cutting device for material webs containing the material webs, which abut the peripheral surface of the transport roller.
  • This cutting device has a knife bar with a knife, with a serrated cutting surface.
  • the cutter bar is articulated on the cutting device.
  • Material webs execute knives and cutter bars Translation movement in the radial direction of the cutting and Transport roller, at least the knife through the slot in the Extends the outer surface and pierces the film. After the cutting process knives and cutter bars are returned to the inside of the roller withdrawn.
  • Knife and knife bar are mechanically complex because the Forces that are required when cutting the material webs are large. Moreover, knives and knife bars must be closed after the The cutting process is withdrawn inside the normally rotating roller become. During this process, the cutting device applied force a considerable centrifugal acceleration, which on Knife and knife bar works, overcome.
  • the great force that comes from the cutting device during the cutting process is applied is at least partially transferred to the material web and must be there, for example, using complex vacuum or suction devices, which push the material web away and then slide it off to prevent the roller from being compensated.
  • the present invention is therefore based on the object to reduce the mechanical complexity of such a device.
  • the integrated in the roller Cutting device at least one pivotable on a knife holder articulated knife is assigned, the pivotable articulation of the at least one knife for the at least one cutting edge of the knife one Defines axis of rotation, either parallel or at an acute angle to a plumb line stands on the plane which of the radial (r) and axial (z) coordinates of the Cutting and transport roller is clamped.
  • the cutting blades of the at least one Knife during the cutting process a movement that at least contains rotary components.
  • the cutting knives can be positioned so that the film only during the first half of the Cutting process is pushed away from the roller. During this For a while, however, the film is only perforated and not yet completely severed. Therefore, the film is wrapped around the anyway Roll on both sides of the perforation and through the still existing one Web tension largely kept on the roller.
  • An apparatus according to the invention can cause roller speeds also to your advantage with vacuum or suction devices, which take off the web of material from the roller especially after the cutting process prevent being provided.
  • a device according to the invention with a plurality of knives comes with very thin blades.
  • a device of this type can therefore also inexpensive industrial knives or knives made of ground thin sheet steel are used.
  • Another possibility is a complete, clean cut of the web
  • Cutting process advantageous in which the different knives too come into contact with the material web at different times. On in this way, the effort of torque Cutting process reduced.
  • Advantageous devices for implementation contain, for example, different knives Length or knife suspended from fulcrums in the radial Direction of the roller are positioned offset to each other.
  • FIG. 1 Another advantageous way of carrying out the method according to the invention is can with the help of a circular cutting device, which is similar to a circular saw can be constructed, carried out.
  • a circular cutting device which is similar to a circular saw can be constructed, carried out.
  • Such Circular cutting device preferably adjusts with the help of an electric motor Torque is available and thus essentially offset circular disk-shaped knife in a rotational movement according to the invention around its main axis of symmetry.
  • the width cleanly can be the thin, essentially circular Knives are moved in the axial direction of the roller.
  • Figure 1 outlines a section through a cutting and Transport roller 1.
  • the cutting and transport roller 1 is along the of the Cut radial and angular coordinates of the plane spanned by the roller. Is located within the lateral surface 3 of the cutting and transport roller 1 also the cutting device 4 with the knives 9, which in this illustration reach straight through the knife gap 6.
  • the material web 7, the normally rests on the lateral surface 3 and in this knife position is being cut is not outlined for illustrative reasons.
  • the entire cutter 4 is housed in a box 2, the in turn is attached to the inside of the outer surface 3 of the roller 1.
  • the origami cylinder 39 has a pin 41 which through the slot 43 in the horizontal projection 11 of the t-profile passes through and the slide 13 the pull-push rod 14 moves during the cutting process.
  • the cutting and transport roller rotates during the Cutting process around their main axis of symmetry 24.
  • the cutting and transport roller rotates during the Cutting process around their main axis of symmetry 24.
  • FIG. 2 shows the cutter bar 8 of the one already shown in FIG. 1 cutting device according to the invention.
  • the cutting and transport roller 1 which the cutting device contains, the whole holding mechanism of the cutter bar as well as the Origazylinder not shown.
  • the base element of the cutter bar is a t-profile 10, on which various Components are attached.
  • a locking plate 12 is attached on the horizontal projection 11 of the t-profile 10.
  • the slide 13 of the pull-push rod 14 slide with little play when it through the slot 43 in the horizontal projection 11 through the pin, not shown in Figure 2 41 of the original cylinder 39 is driven.
  • the pull and push rod 14 has holes 15 through which pins 16 pass.
  • the knife 9 can with little play in the space between the vertical projection 18 of the t-profile 18 and the guide plate 19 slide.
  • the bolts 21 pass through the vertical projection 18 of the t-beam 10, the guide plate 19 and the knife 9 and thereby form the Pivot point for the knives 9.
  • the axis of rotation for the knives is shown in FIG. 2 with D designated.
  • the push and pull rod 14 becomes as mentioned driven by the Origaylinder 39.
  • the to carry out the Cutting process necessary rotary movement can also be done by anyone other suitable device that provides a force or directly Torque generated, are caused. With this device it can among other things, a normal pneumatic cylinder, one electric linear actuator or a normal electric machine.
  • FIG. 3 shows an illustration of the cutting movement of several knives of a cutting device.
  • the elongated holes 17 n of the knives 9 n are also shown.
  • the distances A n between the knives 9 n are significantly smaller than the cutting lengths S n of the respective knives 9 n .
  • the dashed line 22 indicates the position of the cutting surface 9a n at the end of the cutting process of the knife 9 n .
  • the bolts 21 n define the pivot points of the knives 9 n .
  • Figure 4 outlines the cutting movement of a single knife 9 with the two cutting surfaces 9a and 9b again in more detail.
  • the knife Before the cutting process begins, the knife is in the rest position R 1 . In this position the knife 9 is shown broken.
  • the knife 9 has made a cut with the cutting length S in the material web 7.
  • the knife remains in the second rest position R 2 .
  • the knife 9 also has a second cutting surface 9b and can therefore also cut if the cutting process is carried out in the opposite direction.
  • FIG. 5 outlines a cutting process in which a first group N of knives 9n, 9n-1 etc. performs a rotary movement with a negative direction of rotation while cutting, while a second group M of knives 9m, 9m + 1 etc. makes a rotational movement with a positive direction of rotation ,
  • the knife 9n covers an angle - ⁇ .
  • the different cutting direction of the two knife groups M and N is sketched again by the curved arrows 22 N and 22 M.
  • the cutting lengths of the knives are matched to one another in such a way that a continuous cut takes place over the entire width of the material web 7.
  • this description applies to knives 9 n and 9 m in FIG. 5 - a collision of the two knives must also be avoided.
  • the knife 9m does not reach the overlap point O until the knife 9n has already completed the cutting process and is within its entire width within the radius of the film roll R F.
  • Figure 5 also shows that it is possible using a single force here acts in the axial direction, the opposite rotational movements of the two knife groups N and M.
  • the push-pull rod engages 23 for this purpose with the pin 16n below the pivot points of the blades 21 17 9 n, 9 n-1 n into the unillustrated slots of a group N.
  • the pull and push rod 23 runs in this embodiment straight in the axial direction - that is, parallel to the main axis of symmetry 24 of the roller.
  • the knives of groups N and M have different designs.
  • the bolts 21n of group N are located above the push and pull rod 23, while the bolts 21m of the other group M are arranged below the rod 23.
  • the knives of the two knife groups can also be less regular than in the example outlined. Among other things, an alternating Arrangement of knives from both groups N and M conceivable.
  • Figure 6 shows another embodiment of the invention with a Circular cutting device, which is a disk-shaped, essentially round Knife 25 has, which cuts the film web 7, so that the left of the round knife 25 the severed film web 34 can be seen.
  • a Circular cutting device which is a disk-shaped, essentially round Knife 25 has, which cuts the film web 7, so that the left of the round knife 25 the severed film web 34 can be seen.
  • the round knife 25 rotates about the axis 26, which thus has an axis of rotation 36 defined, which is perpendicular to the plane defined by the axial (z) and Radial coordinates (r) is spanned in the reference system of the roller.
  • the torque for the rotational movement is provided by the drive unit 28 provided and from the shaft 29 via the belt 27 to the axis 26 in Transfer pivot point 36 of the knife 25.
  • FIG. 7 shows a sketch of several knives with exemplary shaped ones Cutting blades that further improve the cutting process.
  • Knives are used for this purpose, in which special shapes of these knives have been made directly at the contact point P K , at which the knives 9 Z and 9 z + 3 come into contact with the material web 7 for the first time.
  • the knife 9z has a semicircular recess 51 in the area of its cutting blade directly below the point P k .
  • the presence of this semicircular recess 51 creates an angle ⁇ between the upper region of the cutting edge 50 of the knife 9 z and the edge 49, which is less than 90 °.
  • a force component arises in the radial direction (r) during the cutting process of the knife 9 z before the knife reaches the apex of the cutting movement P s shown in FIG.
  • the action of the knife on the web is advantageously changed by the measure shown.
  • the knife 9 z + 3 consists of two parts 45 and 46.
  • the part 45 is wedge-shaped and shaped so that an angle ⁇ is formed between the cutting edge 48 and the edge 47, which is also less than 90 °.
  • Both the knife 9 z and the knife 9 z + 3 are merely exemplary designs of knives which have edges in the immediate vicinity of the point P k , which are at an angle of less than 90 ° and which are already in an early phase of the cutting process fold in the mentioned force effect. It is particularly advantageous to use knives of the type described on the edge of the material web 7 resting on the lateral surface 3. However, using knives of the type described for severing the material web 7 over its entire width can also be advantageous.
  • Knives of the knife group M 9m, 9m + 1 ... angle - ⁇ angle + ⁇ Axial component of the force on the material web
  • F n Axial component of the force on the material web
  • F n resulting axial component of the force on the material web
  • G linear force
  • F L Radius of the film wrap
  • N, M. O Knife axis of rotation

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Harvester Elements (AREA)

Abstract

The cutting device has at least one swivel fitted blade (9) guided by a blade holder. The swivel connection defines a rotational axis which is either parallel or at an acute angle to a perpendicular to the plane which is spanned by the radial and axial (r, z) co-ordinates of the roller. At least one blade is attached to a cutter bar (8) to carry out translation movement in the radial and/or axial direction of the roller. Independent claim describes method for cutting material webs where cutting movement executed by cutting faces of the at least one blade has rotational components.

Description

Die Erfindung betrifft eine Schneid und Transportwalze mit integrierter Schneidvorrichtung nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zum Schneiden einer Materialbahn mit Hilfe einer solchen Walze.The invention relates to a cutting and transport roller with an integrated Cutting device according to the preamble of claim 1 and a Method for cutting a material web with the help of such a roller.

Schneid- und Transportwalzen der erwähnten Art sind bekannt. Die EP 0 698 571 A2 zeigt eine Schneid- und Transportwalze, die eine äußere mit einer schlitzförmigen Öffnung versehene Mantelfläche aufweist und eine Schneidvorrichtung für Materialbahnen enthält, die die Materialbahnen, welche auf der Umfangsfläche der Transportwalze anliegen, durchtrennt.Cutting and transport rollers of the type mentioned are known. EP 0 698 571 A2 shows a cutting and transport roller, the one with an outer has slot-shaped opening provided lateral surface and a cutting device for material webs containing the material webs, which abut the peripheral surface of the transport roller.

Diese Schneidvorrichtung besitzt einen Messerbalken mit einem Messer, mit einer gezackten Schneidfläche.This cutting device has a knife bar with a knife, with a serrated cutting surface.

Der Messerbalken ist an der Schneidvorrichtung angelenkt. Beim Schneidvorgang von an der Schneid- und Transportwalze anliegenden Materialbahnen vollziehen Messer und Messerbalken eine Translationsbewegung in der radialen Richtung der Schneid- und Transportwalze, wobei zumindest das Messer durch den Schlitz in der Mantelfläche ausgreift und die Folie durchstößt. Nach dem Schneidvorgang werden Messer und Messerbalken wieder in das Innere der Walze zurückgezogen.The cutter bar is articulated on the cutting device. At the Cutting process on the cutting and transport roller Material webs execute knives and cutter bars Translation movement in the radial direction of the cutting and Transport roller, at least the knife through the slot in the Extends the outer surface and pierces the film. After the cutting process knives and cutter bars are returned to the inside of the roller withdrawn.

Vorrichtungen der beschriebenen Art sind mechanisch aufwendig, da die Kräfte, die beim Durchtrennen der Materialbahnen benötigt werden, groß sind. Überdies müssen Messer und Messerbalken nach dem abgeschlossenen Schneidvorgang ins Innere der im Normalfall rotierenden Walze zurückgezogen werden. Bei diesem Vorgang muss die von der Schneidvorrichtung aufgebrachte Kraft eine erhebliche Zentrifugalbeschleunigung, welche auf Messer und Messerbalken wirkt, überwinden.Devices of the type described are mechanically complex because the Forces that are required when cutting the material webs are large. Moreover, knives and knife bars must be closed after the The cutting process is withdrawn inside the normally rotating roller become. During this process, the cutting device applied force a considerable centrifugal acceleration, which on Knife and knife bar works, overcome.

Die große Kraft, die beim Schneidvorgang von der Schneidvorrichtung aufgebracht wird, wird zumindest teilweise auf die Materialbahn übertragen und muss dort beispielsweise durch aufwendige Vakuum- oder Saugeinrichtungen, welche ein Wegdrücken und anschließendes Abgleiten der Materialbahn von der Walze verhindern sollen, kompensiert werden.The great force that comes from the cutting device during the cutting process is applied, is at least partially transferred to the material web and must be there, for example, using complex vacuum or suction devices, which push the material web away and then slide it off to prevent the roller from being compensated.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, den mechanischen Aufwand einer solchen Vorrichtung zu reduzieren.The present invention is therefore based on the object to reduce the mechanical complexity of such a device.

Diese Aufgabe wird gelöst, indem der in der Walze integrierten Schneidvorrichtung zumindest ein schwenkbar an einem Messerhalter angelenktes Messer zugeordnet wird, wobei die schwenkbare Anlenkung des zumindest einen Messers für die zumindest eine Schneide des Messers eine Drehachse definiert, die entweder parallel oder in spitzem Winkel zu einem Lot auf der Ebene steht, welche von den Radial- (r) und Axial- (z) Koordinaten der Schneid- und Transportwalze aufgespannt wird.This task is solved by the integrated in the roller Cutting device at least one pivotable on a knife holder articulated knife is assigned, the pivotable articulation of the at least one knife for the at least one cutting edge of the knife one Defines axis of rotation, either parallel or at an acute angle to a plumb line stands on the plane which of the radial (r) and axial (z) coordinates of the Cutting and transport roller is clamped.

Durch diese Maßnahme vollziehen die Schneidklingen des zumindest einen Messers während des Schneidvorgangs eine Bewegung, die zumindest rotative Komponenten enthält.With this measure, the cutting blades of the at least one Knife during the cutting process a movement that at least contains rotary components.

Die erfindungsgemäße Ausgestaltung einer Schneid- und Transportwalze bringt eine Reihe von Vorteilen mit sich.The inventive design of a cutting and transport roller brings a number of advantages.

Beispielsweise muss während einer Schneidbewegung mit ausschließlich rotatorischen Komponenten lediglich das zumindest eine Messer nicht aber der in der Regel schwere Messerbalken bewegt werden.For example, during a cutting movement with only rotary components only the at least one knife but not the usually heavy knife bars are moved.

Neben der einfacheren mechanischen Ausgestaltung des Schneidmechanismus wird auch der Aufwand, der durch die Notwendigkeit des Festhaltens der Folie auf der Walze nach dem Stand der Technik verursacht wird, reduziert. Bei einem Schneidvorgang, der ausschließlich durch eine Translation des Messers in der radialen Richtung der Walze durchgeführt wird, wird die Folie auch ausschließlich in radialer Richtung nach außen gedrückt.In addition to the simpler mechanical design of the Cutting mechanism is also the effort caused by the need for Holding the film on the roller caused by the prior art is reduced. In the case of a cutting process that is carried out exclusively by a Translation of the knife is carried out in the radial direction of the roller, the film is only pressed outwards in the radial direction.

Bei einer erfindungsgemäßen Vorrichtung können die Schneidmesser so positioniert werden, dass die Folie lediglich während der ersten Hälfte des Einschneidvorgangs von der Walze weggedrückt wird. Während dieses Zeitraums ist die Folie jedoch lediglich perforiert und noch nicht gänzlich durchtrennt. Daher wird die Folie ohnehin durch ihre Umschlingung um die Walze zu beiden Seiten der Perforation und durch die noch bestehende Bahnspannung weitgehend auf der Walze gehalten.In a device according to the invention, the cutting knives can be positioned so that the film only during the first half of the Cutting process is pushed away from the roller. During this For a while, however, the film is only perforated and not yet completely severed. Therefore, the film is wrapped around the anyway Roll on both sides of the perforation and through the still existing one Web tension largely kept on the roller.

Nachdem die rotative Bewegung der Messerschneiden in radialer Richtung ihren Scheitelpunkt überschritten hat, wirkt die Rotationsbewegung des Messers radial in Richtung auf die Hauptsymmetrieachse der Walze und wirkt auf diese Weise einem Abheben der Materialbahn von der Walze entgegen. Dieser Umstand ist angesichts der Zentrifugalbeschleunigung, die auf diese Materialbahn wirkt, wenn die Walze um ihre Hauptsymmetrieachse rotiert, von großem Nutzen.After the rotary movement of the knife blades in the radial direction has exceeded its apex, the rotational movement of the Knife radially in the direction of the main axis of symmetry of the roller and acts in this way counter to a lifting of the material web from the roller. This fact is given the centrifugal acceleration applied to this Material web acts when the roller rotates about its main axis of symmetry great benefit.

Die beschriebenen Vorteile bleiben auch dann erhalten, wenn der erfindungsgemäßen Rotationsbewegung tranlatorische Bewegungskomponenten überlagert werden. Mechanisch lässt sich diese Anforderung beispielsweise durch eine Bewegung des Messerbalkens in. radialer Richtung umsetzen.The advantages described are retained even if the rotational movement according to the invention translational Motion components are superimposed. This can be done mechanically Request, for example, by moving the cutter bar in. implement radial direction.

Angesichts der enormen Fliehkräfte, die bei den mittlerweile geforderten hohen Walzendrehzahlen auftreten, kann eine erfindungsgemäße Vorrichtung jedoch auch zu ihrem Vorteil mit Vakuum- oder Saugeinrichtungen, die das Abheben der Materialbahn von der Walze insbesondere nach dem Schneidvorgang verhindern, versehen werden.In view of the enormous centrifugal forces at the high levels now required An apparatus according to the invention, however, can cause roller speeds also to your advantage with vacuum or suction devices, which take off the web of material from the roller especially after the cutting process prevent being provided.

Vor allem eine erfindungsgemäße Vorrichtung mit einer Mehrzahl von Messern kommt mit sehr dünnen Klingen aus. In einer Vorrichtung dieser Art können daher auch kostengünstige Industriemesser oder Messer aus angeschliffenem dünnen Stahlblech zum Einsatz kommen.Above all, a device according to the invention with a plurality of knives comes with very thin blades. In a device of this type can therefore also inexpensive industrial knives or knives made of ground thin sheet steel are used.

Bei einer Vorrichtung mit einer Mehrzahl von Messern ist es vorteilhaft, wenn die Abstände der Messer zueinander kleiner oder gleich der Länge des Schnitts sind, den sie während des Schneidvorgangs in die Materialbahn einbringen.In the case of a device with a plurality of knives, it is advantageous if the distances between the knives less than or equal to the length of the Are cut into the material web during the cutting process contribute.

Auf diese Weise wird die vollständige, saubere Durchtrennung der Bahn gewährleistet. Bei Vorrichtungen, die keinen kontinuierlichen Schnitt über die gesamte Bahnbreite gewährleisten, kann immer noch eine Durchtrennung der Bahn durch ein Durchreißen der Materialreste beispielsweise infolge der Fliehkrafteinwirkung zustande kommen. Dieser Effekt ist jedoch in der Regel unerwünscht.This way the complete, clean cut of the web guaranteed. For devices that do not have a continuous cut across the Ensure the entire web width can still cut the Web by tearing through the remains of the material, for example as a result of Centrifugal force come about. However, this effect is usually undesirable.

Eine andere Möglichkeit, eine vollständige, saubere Durchtrennung der Bahn zu gewährleisten, liegt in einer Translation des Schneidwerkzeuges vorzugsweise in axialer Richtung während des Schneidvorgangs.Another possibility is a complete, clean cut of the web To ensure, lies in a translation of the cutting tool preferably in the axial direction during the cutting process.

Wird der Schneidvorgang von einer Mehrzahl von Messern durchgeführt, sind Schneidverfahren vorteilhaft, bei denen die unterschiedlichen Messer zu unterschiedlichen Zeitpunkten in Kontakt mit der Materialbahn kommen. Auf diese Weise wird der Kraft- beziehungsweise Drehmomentaufwand des Schneidvorganges reduziert. Vorteilhafte Vorrichtungen zur Durchführung eines solchen Verfahrens enthalten beispielsweise Messer unterschiedlicher Länge oder Messer die an Drehpunkten aufgehängt sind, die in der radialen Richtung der Walze versetzt zueinander positioniert sind.If the cutting process is carried out by a plurality of knives, Cutting process advantageous in which the different knives too come into contact with the material web at different times. On in this way, the effort of torque Cutting process reduced. Advantageous devices for implementation Such a method contain, for example, different knives Length or knife suspended from fulcrums in the radial Direction of the roller are positioned offset to each other.

Eine weitere vorteilhafte Art, das erfindungsgemäße Verfahren durchzuführen, kann mit Hilfe einer Kreisschneideeinrichtung, die ähnlich einer Kreissäge aufgebaut sein kann, durchgeführt werden. Eine solche Kreisschneideeinrichtung stellt vorzugsweise mit Hilfe eines Elektromotors ein Drehmoment zur Verfügung und versetzt damit ein im wesentlichen kreisscheibenförmiges Messer in eine erfindungsgemäße Rotationsbewegung um seine Hauptsymmetrieachse. Um breite Materialbahnen in ihrer gesamten Breite sauber zu durchtrennen, kann das dünne, im wesentliche kreisförmige Messer in der axialen Richtung der Walze verfahren werden.Another advantageous way of carrying out the method according to the invention is can with the help of a circular cutting device, which is similar to a circular saw can be constructed, carried out. Such Circular cutting device preferably adjusts with the help of an electric motor Torque is available and thus essentially offset circular disk-shaped knife in a rotational movement according to the invention around its main axis of symmetry. To wide webs of material in their entire Cutting the width cleanly can be the thin, essentially circular Knives are moved in the axial direction of the roller.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen und der nachstehenden Beschreibung in Verbindung mit den Zeichnungen, in denen Ausführungsbeispiele der Erfindung schematisch veranschaulicht werden. Die Figuren zeigen:

Fig. 1:
Einen Schnitt durch eine Schneid- und Transportwalze
Fig. 2:
Eine Skizze einer Schneidvorrichtung mit mehreren Messern. Die die Schneidvorrichtung enthaltende Walze ist nicht dargestellt.
Fig. 3:
Eine Darstellung der Schneidbewegung mehrerer Messer
Fig. 4:
Eine Darstellung verschiedener Phasen der Schneidbewegung eines Messers
Fig. 5:
Eine Skizze eines Schneidvorgangs bei dem zwei Messergruppen beim Schneiden Drehbewegungen mit entgegengesetztem Drehsinn ausführen.
Fig. 6:
Einen Schnitt durch eine Schneid- und Transportwalze, die eine Kreischneideinrichtung enthält.
Fig. 7:
Eine Skizze mehrerer Messer mit beispielhaft ausgeformten Schneidklingen, welche den Schneidvorgang weiter erleichtern.
Further features and advantages of the invention result from the further subclaims and the following description in conjunction with the drawings, in which exemplary embodiments of the invention are illustrated schematically. The figures show:
Fig. 1:
A cut through a cutting and transport roller
Fig. 2:
A sketch of a cutting device with several knives. The roller containing the cutting device is not shown.
Fig. 3:
An illustration of the cutting movement of several knives
Fig. 4:
An illustration of different phases of the cutting movement of a knife
Fig. 5:
A sketch of a cutting process in which two groups of knives perform rotary movements in opposite directions when cutting.
Fig. 6:
A section through a cutting and transport roller that contains a circular cutting device.
Fig. 7:
A sketch of several knives with exemplary shaped cutting blades, which further facilitate the cutting process.

Figur 1 skizziert einen Schnitt durch eine erfindungsgemäße Schneid- und Transportwalze 1. Die Schneid- und Transportwalze 1 ist entlang der von den Radial- und Winkelkoordinaten der Walze aufgespannten Ebene geschnitten. Innerhalb der Mantelfläche 3 der Schneid- und Transportwalze 1 befindet sich auch die Schneidvorrichtung 4 mit den Messern 9, welche in dieser Darstellung gerade durch den Messerspalt 6 hindurchgreifen. Die Materialbahn 7, die normalerweise auf der Mantelfläche 3 anliegt und bei dieser Messerstellung gerade geschnitten wird, ist aus darstellerischen Gründen nicht skizziert.Figure 1 outlines a section through a cutting and Transport roller 1. The cutting and transport roller 1 is along the of the Cut radial and angular coordinates of the plane spanned by the roller. Is located within the lateral surface 3 of the cutting and transport roller 1 also the cutting device 4 with the knives 9, which in this illustration reach straight through the knife gap 6. The material web 7, the normally rests on the lateral surface 3 and in this knife position is being cut is not outlined for illustrative reasons.

Die gesamte Schneidvorrichtung 4 ist in einem Kasten 2 untergebracht, der seinerseits an der Innenseite der Mantelfläche 3 der Walze 1 angebracht ist.The entire cutter 4 is housed in a box 2, the in turn is attached to the inside of the outer surface 3 of the roller 1.

Um in Figur 1 den Blick auf das innere des Kastens 2 der Schneidvorrichtung 4 freizugeben, ist die vertikale Wand 40b des Kastens der Schneidvorrichtung gebrochen dargestellt.To see in Figure 1 the inside of the box 2 of the cutting device 4th to release is the vertical wall 40b of the box of the cutter shown broken.

In dem dargestellten Ausführungsbeispiel besteht der Messerbalken im wesentlichen aus einem t-Profil 10. Unterhalb der horizontalen Auskragung des t-Profils ist ein Origazylinder 39 am Boden 42 des Kastens 2 angebracht. Der Origazylinder wurde aus darstellerischen Gründen quaderförmig skizziert.In the illustrated embodiment, the cutter bar consists of essentially from a t-profile 10. Below the horizontal projection of the an Origazylinder 39 is attached to the bottom 42 of the box 2. The Origazylinder has been outlined as a cuboid for illustrative reasons.

Der Origazylinder 39 besitzt einen Zapfen 41, der durch den Schlitz 43 in der horizontalen Auskragung 11 des t-Profils hindurchgreift und den Schlitten 13 der Zug-Schubstange 14 während des Schneidprozesses bewegt.The origami cylinder 39 has a pin 41 which through the slot 43 in the horizontal projection 11 of the t-profile passes through and the slide 13 the pull-push rod 14 moves during the cutting process.

In der Regel rotiert die Schneid- und Transportwalze während des Schneidprozesses um ihre Hauptsymmetrieachse 24. Im weiteren Verlauf der Beschreibung wird die Erfindung vor allem unter Bezugnahme auf das bereits in Figur 1 skizzierte Zylinderkoordinatensystem der Schneide- und Transportwalze dargestellt. As a rule, the cutting and transport roller rotates during the Cutting process around their main axis of symmetry 24. In the further course of Description of the invention is made primarily with reference to that already Cylindrical coordinate system of the cutting and Transport roller shown.

Die Einzelheiten der Funktion des Messerbalkens werden in Figur 2 skizziert.The details of the function of the cutter bar are outlined in FIG. 2.

Figur 2 zeigt den Messerbalken 8 der bereits in Figur 1 gezeigten erfindungsgemäßen Schneidvorrichtung. Aus Gründen der Übersichtlichkeit sind die Schneid- und Transportwalze 1, welche die Schneidvorrichtung enthält, der ganze Haltemechanismus des Messerbalkens sowie der Origazylinder nicht dargestellt.FIG. 2 shows the cutter bar 8 of the one already shown in FIG. 1 cutting device according to the invention. For the sake of clarity are the cutting and transport roller 1, which the cutting device contains, the whole holding mechanism of the cutter bar as well as the Origazylinder not shown.

Das Basiselement des Messerbalkens ist ein t-Profil 10, an dem verschiedene Komponenten befestigt sind. Auf der horizontalen Auskragung 11 des t-Profils 10 ist eine Sicherungsplatte 12 befestigt. Zwischen der Sicherungsplatte 12 und der horizontalen Auskragung des t-Profils kann der Schlitten 13 der Zug-Schubstange 14 mit geringem Spiel gleiten, wenn er durch den Schlitz 43 in der horizontalen Auskragung 11 durch den in Figur 2 nicht dargestellten Zapfen 41 des Origazylinders 39 angetrieben wird. Die Zug und Schubstange 14 besitzt Bohrungen 15, durch welche Zapfen 16 hindurchgreifen.The base element of the cutter bar is a t-profile 10, on which various Components are attached. On the horizontal projection 11 of the t-profile 10, a locking plate 12 is attached. Between the locking plate 12 and the horizontal projection of the t-profile, the slide 13 of the pull-push rod 14 slide with little play when it through the slot 43 in the horizontal projection 11 through the pin, not shown in Figure 2 41 of the original cylinder 39 is driven. The pull and push rod 14 has holes 15 through which pins 16 pass.

Diese Zapfen greifen auch durch die in Figur 2 nicht sichtbaren Langlöcher 17 der Messer 9.These pins also reach through the elongated holes 17, which are not visible in FIG. 2 the knife 9.

Die Messer 9 können mit geringem Spiel in dem Zwischenraum zwischen der vertikalen Auskragung 18 des t-Profils 18 und der Führungsplatte 19 gleiten. In dem dargestellten Ausführungsbeispiel der Erfindung sind die Messer 9 mit Führungswulsten 20, die beispielsweise aus Teflon gefertigt sein können, versehen. Die Bolzen 21 durchgreifen die vertikale Auskragung 18 des t-Trägers 10, die Führungsplatte 19 und die Messer 9 und bilden dabei den Drehpunkt für die Messer 9. Die Drehachse für die Messer wird in Figur 2 mit D bezeichnet.The knife 9 can with little play in the space between the vertical projection 18 of the t-profile 18 and the guide plate 19 slide. In the illustrated embodiment of the invention, the knife 9 with Guide beads 20, which can be made of Teflon, for example, Mistake. The bolts 21 pass through the vertical projection 18 of the t-beam 10, the guide plate 19 and the knife 9 and thereby form the Pivot point for the knives 9. The axis of rotation for the knives is shown in FIG. 2 with D designated.

Während des Schneidvorgangs wird die Schub- und Zugstange 14 wie erwähnt von dem Origaylinder 39 angetrieben. Die zur Durchführung des Schneidvorgans notwendige Drehbewegung kann jedoch auch von jeder anderen geeigneten Vorrichtung, die eine Kraft bereitstellt oder direkt ein Drehmoment erzeugt, hervorgerufen werden. Bei dieser Vorrichtung kann es sich unter anderem um einen normalen Pneumatikzylinder, um einen elektrischen Linearantrieb oder eine normale Elektromaschine handeln.During the cutting process, the push and pull rod 14 becomes as mentioned driven by the Origaylinder 39. The to carry out the Cutting process necessary rotary movement can also be done by anyone other suitable device that provides a force or directly Torque generated, are caused. With this device it can among other things, a normal pneumatic cylinder, one electric linear actuator or a normal electric machine.

Bei ihrer linearen Bewegung bewegt die Schub- und Zugstange 14 die Zapfen 16, die durch die Langlöcher 17 der Messer 9 durchgreifen und auf diese Weise Kraft auf die Messer 9 übertragen. Hierdurch werden die Messer 9 in eine Rotationsbewegung versetzt. Die Rotations- beziehungsweise Schwenkbewegung der Messer 9, die von dieser Ausführungsform dargestellt wird, überstreicht einen Winkel der deutlich kleiner als 360° ist. Die Schwenkbewegung eines einzelnen Messers 9 ist in Figur detaillierter dargestellt.In its linear movement, the push and pull rod 14 moves the pins 16, which pass through the elongated holes 17 of the knives 9 and onto them Wise force transferred to the knife 9. As a result, the knives 9 in offset a rotational movement. The rotation respectively Pivotal movement of the knife 9 shown by this embodiment is swept over an angle that is significantly smaller than 360 °. The Pivotal movement of a single knife 9 is more detailed in the figure shown.

Figur 3 zeigt eine Darstellung der Schneidbewegung mehrerer Messer einer Schneideinrichtung. Bei dieser Figur sind auch die Langlöcher 17n der Messer 9n dargestellt. Die Abstände An zwischen den Messern 9n sind bei diesem Ausführungsbeispiel deutlich kleiner als die Schnittlängen Sn der jeweiligen Messer 9n. Die gestrichelte Linie 22 deutet die Position der Schnittfläche 9an am Ende des Schnittprozesses des Messers 9n an. Die Bolzen 21n definieren die Drehpunkte der Messer 9n.FIG. 3 shows an illustration of the cutting movement of several knives of a cutting device. In this figure, the elongated holes 17 n of the knives 9 n are also shown. In this exemplary embodiment, the distances A n between the knives 9 n are significantly smaller than the cutting lengths S n of the respective knives 9 n . The dashed line 22 indicates the position of the cutting surface 9a n at the end of the cutting process of the knife 9 n . The bolts 21 n define the pivot points of the knives 9 n .

Figur 4 skizziert die Schneidbewegung eines einzelnen Messers 9 mit den beiden Schneidflächen 9a und 9b noch einmal detaillierter.Figure 4 outlines the cutting movement of a single knife 9 with the two cutting surfaces 9a and 9b again in more detail.

Vor dem Beginn des Schneidvorgangs befindet sich das Messer in der Ruheposition R1. In dieser Position ist das Messer 9 gebrochen dargestellt.Before the cutting process begins, the knife is in the rest position R 1 . In this position the knife 9 is shown broken.

Während des Schneidvorgangs rotiert das Messer 9 um den Bolzen 21. Zu Beginn des Schneidvorgangs übt das Messer eine Kraft F1 auf die Folie aus, die in radialer Richtung (r) von der Hauptsymmetrieachse der Schneid- und Transportwalze wegführt. Die Materialbahn 7 ist jedoch während dieses Zeitraums noch nicht gänzlich durchtrennt, so dass sie durch die Aufrechterhaltung der Bahnspannung und gegebenenfalls durch die Teilumschlingung der Folie um die Walze 1 zum Andrücken der Materialbahn an die Walze beiträgt. Die Kraftwirkung F1 auf die Folie wird beendet, wenn das Messer bei dem Schneidvorgang den Scheitelpunkt Ps erreicht. Nach dem Durchschreiten des Scheitelpunktes Ps entfaltet das Messer 9 eine Kraftwirkung F2 auf die Materialbahn, die den Andruck der Materialbahn an die Walze 1 unterstützt.During the cutting process, the knife 9 rotates around the bolt 21. At the beginning of the cutting process, the knife exerts a force F 1 on the film, which leads in the radial direction (r) away from the main axis of symmetry of the cutting and transport roller. However, the material web 7 has not yet been completely severed during this period, so that by maintaining the web tension and possibly by partially wrapping the film around the roller 1, it contributes to pressing the material web against the roller. The force F 1 on the film is terminated when the knife reaches the apex P s during the cutting process. After passing through the apex P s , the knife 9 exerts a force F 2 on the material web, which supports the pressure of the material web on the roller 1.

Am Ende des Schneidvorgangs hat das Messer 9 einen Schnitt mit der Schneidlänge S in die Materialbahn 7 eingebracht. Das Messer verharrt in der zweiten Ruhestellung R2. Das Messer 9 verfügt auch über eine zweite Schneidfläche 9b und kann daher auch schneiden, wenn der Schneidvorgang in entgegengesetzter Richtung durchgeführt wird.At the end of the cutting process, the knife 9 has made a cut with the cutting length S in the material web 7. The knife remains in the second rest position R 2 . The knife 9 also has a second cutting surface 9b and can therefore also cut if the cutting process is carried out in the opposite direction.

Figur 5 skizziert einen Schneidvorgang, bei dem eine erste Gruppe N von Messern 9n, 9n-1 usw. beim Schneiden eine Drehbewegung mit negativem Drehsinn ausführt, während eine zweite Gruppe M von Messern 9m, 9m+1 usw. eine Drehbewegung mit positivem Drehsinn macht. Das Messer 9n überstreicht dabei einen Winkel -α. Die unterschiedliche Schneidrichtung der beiden Messergruppen M und N ist noch einmal durch die gekrümmten Pfeile 22N und 22M skizziert.FIG. 5 outlines a cutting process in which a first group N of knives 9n, 9n-1 etc. performs a rotary movement with a negative direction of rotation while cutting, while a second group M of knives 9m, 9m + 1 etc. makes a rotational movement with a positive direction of rotation , The knife 9n covers an angle -α. The different cutting direction of the two knife groups M and N is sketched again by the curved arrows 22 N and 22 M.

Auf diese Weise resultieren aus der entgegengesetzten Drehbewegung der Messerschneiden der beiden Gruppen N und M zwei Kräfte, deren Axialkomponenten Fn und Fm in entgegengesetzter Richtung wirken. Durch diese Maßnahme wird die resultierende Gesamtkraft FG , die während des Schneidvorganges in axialer Richtung u, a. auf die Folie einwirkt, reduziert.In this way, the opposite rotational movement of the knife edges of the two groups N and M results in two forces, the axial components F n and F m of which act in the opposite direction. As a result of this measure, the resulting total force F G , which during the cutting process in the axial direction u, a. acts on the film, reduced.

Es ist möglich, die in axialer Richtung wirkenden Schneidkräfte der beiden Messergruppen Fn und Fm so abzustimmen, dass die resultierende Gesamtkraft FG, die auf die Folie in axialer Richtung ausgeübt wird, weitgehend verschwindet.It is possible to coordinate the cutting forces of the two knife groups F n and F m acting in the axial direction such that the resulting total force F G , which is exerted on the film in the axial direction, largely disappears.

Bei dem dargestellten Ausführungsbeispiel sind wieder die Schnittlängen der Messer so aufeinander abgestimmt, dass ein kontinuierlicher Schnitt über die gesamte Breite der Materialbahn 7 zustande kommt. Bei der Abstimmung der Schneidbewegungen einander benachbarter Messer mit Schneidbewegungen unterschiedlichen Drehsinns - in der Figur 5 trifft diese Beschreibung auf die Messer 9n und 9m zu - ist zusätzlich ein Zusammenstoß der beiden Messer zu vermeiden. Zu diesem Zweck kann vorgesehen werden, dass das Messer 9m den Überlapppunkt O erst erreicht, wenn das Messer 9n den Schneidvorgang bereits abgeschlossen hat und sich in seiner gesamten Breite innerhalb des Radius des Folienwickels RF befindet.In the exemplary embodiment shown, the cutting lengths of the knives are matched to one another in such a way that a continuous cut takes place over the entire width of the material web 7. When coordinating the cutting movements of adjacent knives with cutting movements of different directions of rotation - this description applies to knives 9 n and 9 m in FIG. 5 - a collision of the two knives must also be avoided. For this purpose it can be provided that the knife 9m does not reach the overlap point O until the knife 9n has already completed the cutting process and is within its entire width within the radius of the film roll R F.

Figur 5 zeigt auch, dass es möglich ist, mit Hilfe einer einzelnen Kraft, die hier in axialer Richtung wirkt, die einander entgegengesetzten Drehbewegungen der beiden Messergruppen N und M hervorzurufen.Figure 5 also shows that it is possible using a single force here acts in the axial direction, the opposite rotational movements of the two knife groups N and M.

Bei dem skizzierten Ausführungsbeispiel greift die Schub- Zugstange 23 zu diesem Zweck mit den Zapfen 16n unterhalb der Drehpunkte 21n in die nicht dargestellten Langlöcher 17 der Messer 9n, 9n-1 der Gruppe N ein. Die Zug- und Schubstange 23 läuft in diesem Ausführungsbeispiel in axialer Richtung gerade - also parallel zur Hauptsymmetrieachse 24 der Walze. Die Messer der Gruppen N und M sind jedoch unterschiedlich beschaffen. So befinden sich die Bolzen 21n der Gruppe N oberhalb der Schub- und Zugstange 23 während die Bolzen 21m der anderen Gruppe M unterhalb der Stange 23 angeordnet sind. Durch einfache Maßnahmen dieser Art kann mit einer einzigen Kraft die entgegengesetzte Drehbewegung der beiden Messergruppen N und M hervorgerufen werden. Vorrichtungen, welche die Drehbewegung der beiden Messergruppen mit Hilfe von Antriebseinheiten wie einer Elektromaschine, die sofort ein Drehmoment statt einer Kraft bereitstellen, realisieren, können mit ähnlich einfachen Drehmomentumkehreinrichtungen versehen werden. Auf diese Weise können die entgegengesetzten Drehbewegungen beider Messergruppen von einer Antriebseinheit hervorgerufen werden.In the outlined embodiment, the push-pull rod engages 23 for this purpose with the pin 16n below the pivot points of the blades 21 17 9 n, 9 n-1 n into the unillustrated slots of a group N. The pull and push rod 23 runs in this embodiment straight in the axial direction - that is, parallel to the main axis of symmetry 24 of the roller. The knives of groups N and M have different designs. Thus, the bolts 21n of group N are located above the push and pull rod 23, while the bolts 21m of the other group M are arranged below the rod 23. By simple measures of this type, the opposite rotational movement of the two knife groups N and M can be brought about with a single force. Devices that implement the rotary movement of the two knife groups with the aid of drive units such as an electric machine, which immediately provide torque instead of force, can be provided with similarly simple torque reversing devices. In this way, the opposite rotary movements of both knife groups can be caused by a drive unit.

Die Messer der beiden Messergruppen können auch weniger regelmäßig als in dem skizzierten Beispiel angeordnet werden. So ist u.a. eine alternierende Anordnung von Messern aus beiden Gruppen N und M denkbar.The knives of the two knife groups can also be less regular than in the example outlined. Among other things, an alternating Arrangement of knives from both groups N and M conceivable.

Figur 6 zeigt ein anderes Ausführungsbeispiel der Erfindung mit einer Kreisschneidevorrichtung, die ein scheibenförmiges, im wesentlichen rundes Messer 25 besitzt, welches die Folienbahn 7 durchtrennt, so dass links des runden Messers 25 die durchtrennte Folienbahn 34 zu sehen ist.Figure 6 shows another embodiment of the invention with a Circular cutting device, which is a disk-shaped, essentially round Knife 25 has, which cuts the film web 7, so that the left of the round knife 25 the severed film web 34 can be seen.

Das runde Messer 25 rotiert um die Achse 26, die damit eine Drehachse 36 definiert, die Lotrecht auf der Ebene steht, die von den Axial- (z) und Radialkoordinaten (r) im Bezugssystem der Walze aufgespannt wird. Die Rotationsrichtung ist in diesem Ausführungsbeispiel durch den gekrümmten Pfeil 38 dargestellt. Da die Drehachse 36 aus der Zeichnungsebene herauszeigt, ist sie in Figur 5 lediglich als Punkt darstellbar.The round knife 25 rotates about the axis 26, which thus has an axis of rotation 36 defined, which is perpendicular to the plane defined by the axial (z) and Radial coordinates (r) is spanned in the reference system of the roller. The In this exemplary embodiment, the direction of rotation is curved Arrow 38 shown. Since the axis of rotation 36 from the plane of the drawing shows, it can only be represented as a point in FIG.

Das Drehmoment für die Rotationsbewegung wird von der Antriebseinheit 28 bereitgestellt und von der Welle 29 über das Band 27 auf die Achse 26 im Drehpunkt 36 des Messers 25 übertragen.The torque for the rotational movement is provided by the drive unit 28 provided and from the shaft 29 via the belt 27 to the axis 26 in Transfer pivot point 36 of the knife 25.

Die gesamte Kreisschneidevorrichtung 35 vollzieht während des Schneidprozesses eine Translation in axialer Richtung (z). In Figur 6 findet gerade eine Bewegung in der durch den geraden Pfeil 37 dargestellten Richtung statt. Zu diesem Zweck ist die Kreisschneideeinrichtung 35 auf dem Schlitten 30 angebracht, der auf der Schiene 31 gleitet. Die Kraft für diese Linearbewegung wird von dem Origazylinder 32 bereitgestellt, der dieselbe mit dem Zapfen 33 auf den Schlitten 30 überträgt.The entire circular cutting device 35 takes place during the Cutting process a translation in the axial direction (z). In Figure 6 takes place just a movement in that represented by the straight arrow 37 Direction instead. For this purpose, the circular cutting device 35 is on the Carriage 30 attached, which slides on the rail 31. The strength for this Linear motion is provided by the origami cylinder 32, which the same with transfers the pin 33 to the carriage 30.

Anzumerken ist noch, dass das in Figur 6 skizzierte Schneidverfahren auf unterschiedliche Weise beginnen kann. So kann die Kontaktaufnahme des Messers 25 mit der Materialbahn 7 durch eine Bewegung der Kreisschneideeinrichtung 35 in axialer Richtung vollzogen werden. Dies ist insbesondere dann möglich, wenn die Breite der Materialbahn 7 geringer ist als die maximale Arbeitsbreite des Messers 25, die durch die Länge des Verfahrweges des Schlittens 30 und die Länge des Messerspalts 6 in der Mantelfläche 3 der Walze 1 definiert wird.It should also be noted that the cutting method outlined in FIG can start different ways. So contacting the Knife 25 with the material web 7 by moving the Circular cutting device 35 are performed in the axial direction. This is in particular possible if the width of the material web 7 is less than the maximum working width of the knife 25, which is determined by the length of the Travel path of the carriage 30 and the length of the knife gap 6 in the Shell surface 3 of the roller 1 is defined.

Es ist jedoch auch möglich, das Messer 25 mit einer Bewegung in radialer Richtung zu Beginn des Schneidvorganges in Kontakt mit der Materialbahn 7 zu bringen. Zu diesem Zweck kann beispielsweise auf dem Schlitten 30 eine Hubeinrichtung, welche die Kreisschneideinrichtung in radialer Richtung (r) bewegen kann, vorgesehen werden.However, it is also possible to move the knife 25 with a radial movement Direction at the beginning of the cutting process in contact with the material web 7 bring to. For this purpose, one can, for example, on the slide 30 Lifting device, which the circular cutting device in the radial direction (r) can move, be provided.

In diesem Zusammenhang ist noch einmal zu betonen, dass es bei allen dargestellten Ausführungsformen der Erfindung vorteilhaft sein kann, die Schneidbewegung auch mit translatorischen Komponenten in radialer Richtung zu unterstützen. Zu diesem Zweck kann beispielsweise in radialer Richtung unterhalb des Messerbalkens 8 eine geeignete Hubvorrichtung vorgesehen werden. Auch vorteilhafte Ausführungsformen von Vorrichtungen und Verfahren dieser Art werden durch einen Teil der nachstehenden Ansprüche umfasst.In this context it should be emphasized once again that it applies to everyone illustrated embodiments of the invention may be advantageous Cutting movement also with translational components in the radial direction to support. For this purpose, for example, in the radial direction A suitable lifting device is provided below the cutter bar 8 become. Also advantageous embodiments of devices and Methods of this type are covered by part of the claims below includes.

Figur 7 zeigt eine Skizze mehrerer Messer mit beispielhaft ausgeformten Schneidklingen, welche den Schneidprozess weiter verbessern.FIG. 7 shows a sketch of several knives with exemplary shaped ones Cutting blades that further improve the cutting process.

Zu diesem Zweck werden Messer verwendet, bei denen unmittelbar an dem Kontaktpunkt PK, an dem die Messer 9Z und 9z+3 erstmals in Kontakt mit der Materialbahn 7 kommen, spezielle Ausformungen dieser Messer vorgenommen worden sind. So besitzt das Messer 9z eine halbkreisförmige Ausnehmung 51 im Bereich seiner Schneidklinge direkt unterhalb des Punktes Pk. Durch das Vorhandensein dieser halbkreisförmigen Ausnehmung 51 entsteht ein Winkel χ zwischen dem oberen Bereich der Schneidkante 50 des Messers 9z und der Kante 49, der kleiner als 90° ist. Auf diese Weise entsteht während des Schneidprozesses des Messers 9z eine Kraftkomponente in radialer Richtung (r) bevor das Messer den in Figur 4 gezeigten Scheitelpunkt der Schneidbewegung Ps erreicht. In jedem Fall wird durch die gezeigte Maßnahme die Kraftwirkung des Messers auf die Bahn in vorteilhafter Weise verändert.Knives are used for this purpose, in which special shapes of these knives have been made directly at the contact point P K , at which the knives 9 Z and 9 z + 3 come into contact with the material web 7 for the first time. The knife 9z has a semicircular recess 51 in the area of its cutting blade directly below the point P k . The presence of this semicircular recess 51 creates an angle χ between the upper region of the cutting edge 50 of the knife 9 z and the edge 49, which is less than 90 °. In this way, a force component arises in the radial direction (r) during the cutting process of the knife 9 z before the knife reaches the apex of the cutting movement P s shown in FIG. In any case, the action of the knife on the web is advantageously changed by the measure shown.

Das Messer 9z+3 besteht aus zwei Teilen 45 und 46. Das Teil 45 ist keilförmig und so geformt, dass zwischen der Schneidkante 48 und der Kante 47 ein Winkel δ entsteht, der ebenfalls kleiner 90° ist.The knife 9 z + 3 consists of two parts 45 and 46. The part 45 is wedge-shaped and shaped so that an angle δ is formed between the cutting edge 48 and the edge 47, which is also less than 90 °.

Sowohl das Messer 9z als auch das Messer 9z+3 sind lediglich beispielhafte Ausformungen von Messern, die in unmittelbarer Umgebung des Punktes Pk Kanten besitzen, die in einem Winkel von weniger als 90° stehen und welche bereits während einer frühen Phase des Schneidvorgangs die erwähnte Kraftwirkung einfalten. Besonders vorteilhaft ist die Verwendung von Messern der beschriebenen Art am Rand der auf der Mantelfläche 3 anliegenden Materialbahn 7. Eine Verwendung von Messern der beschriebenen Art zum Durchtrennen der Materialbahn 7 über ihre ganze Breite kann jedoch auch vorteilhaft sein. Bezugszeichenliste Schneid- und Transportwalze 1 Kasten der Schneidvorrichtung 2 Mantelfläche 3 Schneidvorrichtung 4 Messer 5 Messerspalt 6 Materialbahn 7 Messerbalken 8 Messer 9 9n 9m t-Profil 10 horizontale Auskragung des t-Profils 11 Sicherungsplatte 12 Schlitten der Zug-Schubstange 13 Zug-Schubstange 14 Bohrungen 15 Zapfen 16 16n 16m Langlöcher 17 17n 17m vertikale Auskragung des t-Profils 18 Führungsplatte 19 Führungswulste 20 Bolzen 21 gekrümmte Pfeile in Richtung des Drehsinns 22n 22m Zug- Schubstange 23 Hauptsymmetrieachse der Walze 24 rundes Messer 25 Achse des runden Messers 26 Band 27 Antriebseinheit 28 Welle 29 Schlitten der Kreisschneiseeinheit 30 Schiene 31 Origazylinder 32 Zapfen des Origazylinders 33 durchtrennte Folienbahn 34 Kreisschneideeinrichtung 35 Drehachse des runden Messers 36 gerader Pfeil 37 gekrümmter Pfeil 38 Origazylinder vertikale Wand des Kastens der Schneideeinrichtung 40a 40b Zapfen des Origazylinders 41 Boden des Kastens der Schneideeinrichtung 42 Schlitz in der horizontalen Auskragung des t-Profils 43 gestrichelte Linie 44 Teil des Messers 9z+3 45 Teil des Messers 9z+3 46 Kante des Messers 9z+3 47 Schneidkante des Messers 9z+3 48 Kante des Messers 9z 49 Oberer Teil der Schneidante des Messers 9z 50 halkreisförmige Ausnehmung des Messers 9z 51 Radialkoordinaten r Axialkoordinaten z Winkelkoordinaten ϕ Abstände zwischen den Messern An Schnittlängen der jeweiligen Messer Sn Sm erste Ruheposition des Messers R1 zweite Ruheposition des Messers R2 Kraftwirkung auf die Folie F1 Kraftwirkung auf die Folie F2 Schneidfläche 9a Schneidfläche 9b Messergruppe N Messergruppe M Messer der Messergruppe N 9n, 9n-1... Messer der Messergruppe M 9m, 9m+1... Winkel -α Winkel +β Axialkomponente der Kraft auf die Materialbahn Fn Axialkomponente der Kraft auf die Materialbahn Fn resultierende Axialkomponente der Kraft auf die Materialbahn FG lineare Kraft FL Radius des Folienwickels RF Überlapppunkt von Schneidbewegungen von Messern, die unterschiedlichen Messergruppen N, M angehören O Drehachse der Messer D Scheitelpunkt des Messers PS Punkt der Kontaktaufnahme zwischen Messer und Materialbahn Pk Winkel χ Winkel δ Both the knife 9 z and the knife 9 z + 3 are merely exemplary designs of knives which have edges in the immediate vicinity of the point P k , which are at an angle of less than 90 ° and which are already in an early phase of the cutting process fold in the mentioned force effect. It is particularly advantageous to use knives of the type described on the edge of the material web 7 resting on the lateral surface 3. However, using knives of the type described for severing the material web 7 over its entire width can also be advantageous. LIST OF REFERENCE NUMBERS Cutting and transport roller 1 Box of the cutting device 2 lateral surface 3 cutter 4 knife 5 blade gap 6 web 7 cutter bar 8th knife 9 9 n 9 m t profile 10 horizontal overhang of the t-profile 11 locking plate 12 Slide the push rod 13 Train pushrod 14 drilling 15 spigot 16 16 n 16 m slots 17 17n 17m vertical overhang of the t-profile 18 guide plate 19 Führungswulste 20 bolt 21 curved arrows in the direction of rotation 22n 22m Pull-push rod 23 Main axis of symmetry of the roller 24 round knife 25 Axis of the round knife 26 tape 27 drive unit 28 wave 29 Sledge of the circular cutting unit 30 rail 31 Origazylinder 32 Pin of the origami cylinder 33 severed film 34 Circular cutter 35 Rotation axis of the round knife 36 straight arrow 37 curved arrow 38 Origazylinder vertical wall of the box of the cutter 40a 40b Pin of the origami cylinder 41 Bottom of the box of the cutter 42 Slit in the horizontal projection of the t-profile 43 dashed line 44 Part of the knife 9 z + 3 45 Part of the knife 9 z + 3 46 Edge of the knife 9 z + 3 47 Cutting edge of the knife 9 z + 3 48 Edge of the knife 9 z 49 Upper part of the cutting edge of the knife 9 z 50 semicircular recess of the knife 9 z 51 radial coordinates r Axialkoordinaten z angular coordinates φ Distances between the knives A n Cutting lengths of the respective knives sn sm first rest position of the knife R 1 second rest position of the knife R 2 Force effect on the film F 1 Force effect on the film F 2 cutting surface 9a cutting surface 9b Messer group N Messer group M Knives of knife group N 9n, 9n-1 ... Knives of the knife group M 9m, 9m + 1 ... angle -α angle + β Axial component of the force on the material web F n Axial component of the force on the material web F n resulting axial component of the force on the material web F G linear force F L Radius of the film wrap R F Overlap point of cutting movements of knives belonging to different knife groups N, M. O Knife axis of rotation D Knife apex P S Point of contact between knife and material web P k angle χ angle δ

Claims (24)

1. Schneid- und Transportwalze, die eine äußere mit einer schlitzförmigen Öffnung versehene Mantelfläche aufweist und eine Schneidvorrichtung für Materialbahnen enthält, die die Materialbahnen, welche auf der Mantelfläche der Transportwalze anliegen, durchtrennt,
wobei die Schneidvorrichtung zumindest ein von einem Messerhalter geführtes Messer enthält, das seinerseits zumindest eine Schneidfläche besitzt,
wobei das zumindest eine Messer schwenkbar an dem Messerhalter angelenkt ist und beim Schneiden der Materialbahn durch die Öffnung in der Mantelfläche ausgreift
dadurch gekennzeichnet, dass
die schwenkbare Anlenkung des zumindest einen Messers (9) für die zumindest eine Schneide (9a) des Messers eine Drehachse definiert, die entweder parallel oder in spitzem Winkel zu einem Lot auf der Ebene steht, welche von den Radial- (r) und Axial- (z) Koordinaten der Schneid-und Transportwalze (1) aufgespannt wird. 1. Cutting and transport roller, which has an outer jacket surface provided with a slot-shaped opening and contains a cutting device for material webs, which cuts through the material webs which rest on the jacket surface of the transport roller,
wherein the cutting device contains at least one knife guided by a knife holder, which in turn has at least one cutting surface,
wherein the at least one knife is pivotally articulated on the knife holder and extends through the opening in the lateral surface when cutting the material web
characterized in that
the pivotable articulation of the at least one knife (9) for the at least one cutting edge (9a) of the knife defines an axis of rotation which is either parallel or at an acute angle to a perpendicular on the plane which is defined by the radial (r) and axial (z) coordinates of the cutting and transport roller (1) is clamped. 2. Schneid- und Transportwalze nach Anspruch 1,
dadurch gekennzeichnet, dass
das zumindest eine Messer (9) an einem Messerbalken (8) angebracht ist, der eine Translationsbewegung in radialer und/oder axialer Richtung der Schneid- oder Transportwalze (1) ausführen kann. 2. Cutting and transport roller according to claim 1,
characterized in that
the at least one knife (9) is attached to a knife bar (8), which can carry out a translational movement in the radial and / or axial direction of the cutting or transport roller (1). 3. Schneid- und Transportwalze nach Anspruch 1 oder 2,
gekennzeichnet durch
Saugvorrichtungen oder Vakuumkammern innerhalb der Mantelfläche der Schneid- und Transportwalze, welche Verbindungen mit Öffnungen in der Mantelfläche der Schneid- und Transportwalze besitzen. 3. Cutting and transport roller according to claim 1 or 2,
marked by
Suction devices or vacuum chambers within the outer surface of the cutting and transport roller, which have connections with openings in the outer surface of the cutting and transport roller. 4. Schneid- und Transportwalze nach Anspruch 3,
gekennzeichnet durch
Vorrichtungen zum Öffnen und Schließen der Verbindungen zwischen den Saugvorrichtungen oder Vakuumkammern innerhalb der Mantelfläche und den Öffnungen in der Mantelfläche. 4. cutting and transport roller according to claim 3,
marked by
Devices for opening and closing the connections between the suction devices or vacuum chambers within the lateral surface and the openings in the lateral surface. 5. Schneid- und Transportwalze nach einem der vorangegangenen Ansprüche
gekennzeichnet durch
eine Vorrichtung zur Bereitstellung einer Kraft, die innerhalb der Mantelfläche des Schneid- und Transportzylinders angebracht ist und die besagte Kraft auf eine Zug- Schubstange (14, 23) überträgt, die in der radialen Richtung der Schneid- und Transportwalze (1) versetzt zu dem Drehpunkt des zumindest einen Messers (9) an dieses Messer angelenkt ist. 5. Cutting and transport roller according to one of the preceding claims
marked by
a device for providing a force which is mounted within the outer surface of the cutting and transport cylinder and transmits said force to a pull-push rod (14, 23) which is offset in the radial direction of the cutting and transport roller (1) The pivot point of the at least one knife (9) is articulated on this knife. 6. Schneid- und Transportwalze nach Anspruch 5,
dadurch gekennzeichnet, dass
an der Zug- Schubstange Zapfen (16) angebracht sind, die durch Langlöcher (17) in dem zumindest einen Messer (9) hindurchgreifen und die Messer antreiben. 6. cutting and transport roller according to claim 5,
characterized in that
pins (16) are attached to the pull-push rod, which reach through elongated holes (17) in the at least one knife (9) and drive the knives. 7. Schneid- und Transportwalze nach Anspruch 5 oder 6,
dadurch gekennzeichnet, dass
die Zug- Schubstange (14) als Schlitten (13) ausgeprägt ist, der zwischen Führungselementen der Schneidvorrichtung läuft. 7. Cutting and transport roller according to claim 5 or 6,
characterized in that
the pull-push rod (14) is shaped as a slide (13) which runs between guide elements of the cutting device. 8. Schneid- und Transportwalze nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
das zumindest eine Messer (9) aus einem flachen blechartigen Material besteht, wobei die Materialstärke klein gegen die Messerbreite ist. 8. Cutting and transport roller according to one of the preceding claims,
characterized in that
the at least one knife (9) consists of a flat sheet-like material, the material thickness being small compared to the knife width. 9. Schneid- und Transportwalze nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, dass
die Schneidvorrichtung eine Mehrzahl von Messern (9n , 9n+1 ...) enthält, deren Schneidklingen (9a, 9b) in der jeweiligen Ruhestellung Abstände (Sn ) voneinander haben, die jeweils kleiner oder gleich der Länge des Schnitts sind, den das zugeordnete Messer (9n ) in die Materialbahnen einbringt. 9. Cutting and transport roller according to one of the preceding claims,
characterized in that
the cutting device contains a plurality of knives (9 n , 9 n + 1 ...), the cutting blades (9a, 9b) of which in the respective rest position are spaced apart (S n ) from each other, which are each less than or equal to the length of the cut, which the assigned knife (9 n ) brings into the material webs. 10. Schneid- und Transportwalze nach einem der vorangegangenen Ansprüche
dadurch gekennzeichnet, dass
die Schneidvorrichtung Messer (9) unterschiedlicher Länge oder Messer, die an Drehpunkten aufgehängt sind, die in der radialen Richtung der Walze versetzt zueinander positioniert sind, enthält. 10. Cutting and transport roller according to one of the preceding claims
characterized in that
the cutting device contains knives (9) of different lengths or knives which are suspended from fulcrums which are positioned offset to one another in the radial direction of the roller. 11. Schneid- und Transportwalze nach Anspruch 2
dadurch gekennzeichnet dass
an dem Messerbalken eine Kreisschneideinrichtung, die ein scheibenförmiges, im wesentlichen rundes Messer vorzugsweise mit einem Elektromotor in eine Rotationsbewegung versetzt, angebracht ist. 11. Cutting and transport roller according to claim 2
characterized in that
a circular cutting device, which sets a disk-shaped, essentially round knife, preferably with an electric motor, into a rotational movement, is attached to the knife bar. 12. Verfahren zum Schneiden von Materialbahnen, die auf der Umfangsfläche der Schneid- und Transportwalze anliegen, mit Hilfe einer Schneidvorrichtung, die sich in ihrer Ruhestellung im Wesentlichen innerhalb der Mantelfläche der Schneid- und Transportwalze befindet und die zumindest ein Messer aufweist, das beim Schneiden der Materialbahn eine Öffnung der Mantelfläche der Schneid- und Transportwalze hindurchgreift,
dadurch gekennzeichnet, dass
die Schneidbewegung, welche bei dem Schneidvorgang von den Schneidflächen (9a, 9b) des mindestens einen Messers ausgeführt wird, rotatorische Komponenten aufweist,
wobei die Roatationsbewegungen des zumindest einen Messers jeweils um Achsen verlaufen, die entweder parallel oder in spitzem Winkel zu einem Lot auf der Ebene stehen, welche von den Radial- (r) und Axial-(z) Koordinaten der Schneid- und Transportwalze aufgespannt wird. 12. Method for cutting material webs which rest on the circumferential surface of the cutting and transport roller with the aid of a cutting device which, in its rest position, is located essentially within the lateral surface of the cutting and transport roller and which has at least one knife which is used for cutting the material web reaches through an opening of the outer surface of the cutting and transport roller,
characterized in that
the cutting movement, which is performed by the cutting surfaces (9a, 9b) of the at least one knife during the cutting process, has rotary components,
wherein the roating movements of the at least one knife each run around axes that are either parallel or at an acute angle to a perpendicular on the plane spanned by the radial (r) and axial (z) coordinates of the cutting and transport roller. 13. Verfahren nach Anspruch 12
dadurch gekennzeichnet, dass
die Schneidbewegung, welche bei dem Schneidvorgang von den Schneidflächen (9a, 9b) des mindestens einen Messers ausgeführt wird, auch translatorische Komponenten enthält. 13. The method according to claim 12
characterized in that
the cutting movement, which is carried out by the cutting surfaces (9a, 9b) of the at least one knife during the cutting process, also contains translational components. 14. Verfahren nach einem der vorstehenden Ansprüche
dadurch gekennzeichnet, dass
die Schneidflächen (9a, 9b) des mindestens einen Messers bei dem Schneidvorgang einen Winkel überstreichen, der kleiner als 360° ist. 14. The method according to any one of the preceding claims
characterized in that
the cutting surfaces (9a, 9b) of the at least one knife cover an angle during the cutting process that is less than 360 °. 15. Verfahren nach Anspruch 14
gekennzeichnet durch die Abfolge folgender Verfahrensschritte: (a) das zumindest eine Messer (9) ruht vor dem Beginn des ersten Schneidvorgangs in einer ersten Ruhestellung (R1) innerhalb der Mantelfläche (3) der Transportwalze (1); (b) das zumindest eine Messer (9) vollzieht bei einem ersten Schneidvorgang, bei dem eine erste Schneidfläche (9a) des zumindest einen Messers (9) genutzt wird, eine Drehbewegung in einer ersten Drehrichtung und erreicht eine zweite Ruhestellung (R2) innerhalb der Mantelfläche (3) der Transportwalze (3); (c) das zumindest eine Messer (9) verharrt bis zu einem zweiten Schneidvorgang in der zweiten Ruhestellung (R2) innerhalb der Mantelfläche (3) der Transportwalze; (d) das zumindest eine Messer (9) vollzieht bei einem zweiten Schneidvorgang, bei dem eine zweite Schneidfläche (9b) des zumindest einen Messers genutzt wird, eine Schneidbewegung in der zweiten Drehrichtung, die der ersten Drehrichtung entgegengesetzt ist und erreicht auf diese Weise wieder die erste Ruhestellung (R1) innerhalb der Mantelfläche der Transportwalze . 15. The method according to claim 14
characterized by the sequence of the following process steps: (a) the at least one knife (9) rests before the start of the first cutting operation in a first rest position (R 1 ) within the lateral surface (3) of the transport roller (1); (b) the at least one knife (9) performs a rotary movement in a first direction of rotation in a first cutting operation, in which a first cutting surface (9a) of the at least one knife (9) is used, and reaches a second rest position (R 2 ) within the lateral surface (3) of the transport roller (3); (c) the at least one knife (9) remains in the second rest position (R 2 ) within the lateral surface (3) of the transport roller until a second cutting operation; (d) the at least one knife (9) performs a cutting movement in the second direction of rotation, which is opposite to the first direction of rotation, in a second cutting operation, in which a second cutting surface (9b) of the at least one knife is used, and in this way reaches again the first rest position (R 1 ) within the lateral surface of the transport roller. 17. Verfahren nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass
eine innerhalb der Mantelfläche des Zylinders bereitgestellte Kraft zur Erzeugung der Schwenkbewegung des zumindest einen Messers mechanisch in Drehmoment umgesetzt wird. 17. The method according to any one of the preceding claims, characterized in that
a force provided within the lateral surface of the cylinder for generating the pivoting movement of the at least one knife is converted mechanically into torque. 18. Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
unterschiedliche Messer einer Schneidvorrichtung zumindest teilweise zu unterschiedlichen Zeitpunkten in Kontakt mit der zu schneidenden Folienbahn gebracht werden. 18. The method according to any one of the preceding claims,
characterized in that
different knives of a cutting device are at least partially brought into contact with the film web to be cut at different times. 19. Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
die Schneidvorrichtung mehrere Messer enthält, von denen zumindest eines einer Messergruppe (N) und zumindest ein anderes einer Messergruppe (M) zugeordnet wird und
wobei das zumindest eine Messer (9n) der ersten Gruppe während eines Schneidvorgangs eine Schneidbewegung ausführt, deren rotatorische Komponenten einen Drehsinn besitzen, der dem Drehsinn der rotatorischen Komponenten der Schneidbewegung des zumindest einen Messers (9m) der zweiten Gruppe (M) entgegengerichtet ist. 19. The method according to any one of the preceding claims,
characterized in that
the cutting device contains a plurality of knives, at least one of which is assigned to a knife group (N) and at least another to a knife group (M) and
wherein the at least one knife (9 n ) of the first group executes a cutting movement during a cutting process, the rotary components of which have a direction of rotation which is opposite to the direction of rotation of the rotary components of the cutting movement of the at least one knife (9 m ) of the second group (M) , 20. Verfahren nach Anspruch 19,
dadurch gekennzeichnet, dass
die Drehbewegungen mit entgegengesetztem Drehsinn, welche die Messer der beiden Messergruppen (N, M) ausführen, durch die Umsetzung einer Kraft hervorgerufen werden, indem Komponenten der Kraft (FL) auf das zumindest eine Messer (9n) der ersten Gruppe (N) in radialer Richtung unterhalb der Drehachse der Messerbewegung (21n) übertragen werden, während Komponenten der Linearkraft auf das zumindest eine Messer (9m) der zweiten Gruppe (M) in radialer Richtung oberhalb der Drehachse der Messerbewegung (21m) einwirken. 20. The method according to claim 19,
characterized in that
the rotational movements with the opposite direction of rotation, which the knives of the two knife groups (N, M) execute, are caused by the conversion of a force by components of the force (F L ) on the at least one knife (9 n ) of the first group (N) are transmitted in the radial direction below the axis of rotation of the knife movement (21 n ), while components of the linear force act on the at least one knife (9 m ) of the second group (M) in the radial direction above the axis of rotation of the knife movement (21 m ). 21. Verfahren nach Anspruch 19,
dadurch gekennzeichnet, dass
die Drehbewegungen mit entgegengesetztem Drehsinn, welche die Messer der beiden Messergruppen (N, M) ausführen, durch Antriebseinrichtung zur Bereitstellung eines Drehmomentes hervorgerufen werden, wobei das Drehmoment für die zweite Messergruppe mit getrieblichen Mitteln umgerichtet und auf die Messer übertragen wird. 21. The method according to claim 19,
characterized in that
the rotational movements in the opposite direction of rotation, which the knives of the two knife groups (N, M) execute, are caused by drive means for providing a torque, the torque for the second knife group being redirected by transmission means and transmitted to the knives. 22. Verfahren nach Anspruch 12,
gekennzeichnet durch folgende Verfahrensschritte: (a) eine in einer ersten Ruhestellung, die den Transport von Materialbahnen mit der Schneide- und Transportwalze erlaubt, befindliche. Kreisschneideinrichtung versetzt ein scheibenförmiges, im wesentlichen rundes Messer (25) in Rotation um seine Drehachse (36), wobei die besagte Drehachse (36) parallel oder im spitzen Winkel zu einem Lot auf der von den Radial- (r) und Axialkomponenten (z) gebildeten Ebene liegt; (b) das rotierende scheibenförmige, im wesentlichen runde Messer (25) wird in Kontakt zu den zu durchtrennenden Materialbahnen (7) gebracht; (c) das rotierende scheibenförmige, im wesentlichen runde Messer (25) wird in eine Translation entlang der schlitzförmigen Öffnung (6) in der Mantelfläche (3) versetzt, so dass das scheibenförmige, im wesentlichen runde Messer (25) die Materialbahn (3) durchtrennt, wobei die besagte Translation entlang der schlitzförmigen Öffnung (6) im wesentlichen in axialer Richtung (z) verläuft. (d) das rotierende scheibenförmige, im wesentlichen runde Messer (25) verharrt in einer zweiten Ruhestellung, die den Transport weiterer Materialbahnen mit der Schneide- und Transportwalze (1) erlaubt. 22. The method according to claim 12,
characterized by the following process steps: (a) one in a first rest position, which allows the transport of material webs with the cutting and transport roller. Circular cutting device sets a disk-shaped, essentially round knife (25) in rotation about its axis of rotation (36), said axis of rotation (36) being parallel or at an acute angle to a plumb line on that of the radial (r) and axial components (z) formed level lies; (b) the rotating disk-shaped, essentially round knife (25) is brought into contact with the material webs (7) to be cut; (c) the rotating disk-shaped, essentially round knife (25) is placed in translation along the slot-shaped opening (6) in the lateral surface (3), so that the disk-shaped, essentially round knife (25) the material web (3) severed, said translation running along the slot-shaped opening (6) substantially in the axial direction (z). (d) the rotating disk-shaped, essentially round knife (25) remains in a second rest position, which allows the transport of further material webs with the cutting and transport roller (1). 23. Verfahren nach Anspruch 22,
dadurch gekennzeichnet, dass
das rotierende scheibenförmige, im wesentlichen runde Messer (25) zwischen den Schneidvorgängen stillsteht. 23. The method according to claim 22,
characterized in that
the rotating disk-shaped, essentially round knife (25) stands still between the cutting operations. 24. Verfahren nach Anspruch 22 oder 23,
dadurch gekennzeichnet, dass
das rotierende scheibenförmige, im wesentlichen runde Messer (25) nach dem Schneidvorgang aus der ersten in die zweite Ruhestellung zurückgefahren wird. 24. The method according to claim 22 or 23,
characterized in that
the rotating disk-shaped, essentially round knife (25) is moved back from the first to the second rest position after the cutting process. 25. Vorrichtung und Verfahren nach einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
zumindest ein Messer verwendet wird, das in unmittelbarer Nähe des Punktes (Pk), an dem das zumindest eine Messer bei Beginn des Schneidvorgangs erstmals in Kontakt mit der Materialbahn kommt, eine obere Kannte (47, 49) besitzt, die zu der zumindest einen Schneidkante (48, 50) in einem Winkel (χ, δ) steht, der kleiner als 90° ist. 25. Device and method according to one of the preceding claims,
characterized in that
at least one knife is used which, in the immediate vicinity of the point (P k ) at which the at least one knife comes into contact with the material web for the first time at the start of the cutting process, has an upper edge (47, 49) which corresponds to the at least one Cutting edge (48, 50) is at an angle (χ, δ) that is less than 90 °.
EP01119891A 2000-09-22 2001-08-17 Oscillating single bladed knives and method of cutting with such knives Expired - Lifetime EP1190821B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10047545A DE10047545B4 (en) 2000-09-22 2000-09-22 Cutting and transporting roller with integrated cutting device with pivotable cutting surfaces and method for cutting material webs by means of such a roller
DE10047545 2000-09-22

Publications (3)

Publication Number Publication Date
EP1190821A2 true EP1190821A2 (en) 2002-03-27
EP1190821A3 EP1190821A3 (en) 2004-11-03
EP1190821B1 EP1190821B1 (en) 2009-03-25

Family

ID=7657605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01119891A Expired - Lifetime EP1190821B1 (en) 2000-09-22 2001-08-17 Oscillating single bladed knives and method of cutting with such knives

Country Status (7)

Country Link
US (1) US6766722B2 (en)
EP (1) EP1190821B1 (en)
JP (1) JP2002187669A (en)
AT (1) ATE426490T1 (en)
BR (1) BR0104166A (en)
CA (1) CA2357579A1 (en)
DE (2) DE10047545B4 (en)

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WO2009106303A1 (en) * 2008-02-26 2009-09-03 Kuka Systems Gmbh Processing device and processing method for separating overhangs on edges
CN111169027A (en) * 2020-01-09 2020-05-19 苏州惠国塑料制品有限公司 PE film efficient blow molding production line

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EP1458529B1 (en) * 2001-12-19 2006-09-20 Windmöller & Hölscher KG Blade slit covering on a cutting and feed roller
DE10321778B4 (en) * 2003-05-14 2006-03-30 Windmöller & Hölscher Kg Cutting and transport roller in a winding device for winding webs of material
DE102004055734A1 (en) * 2004-11-18 2006-06-01 Kiefel Extrusion Gmbh Method and device for right-handed and left-handed winding of material webs
US20080223975A1 (en) * 2007-03-14 2008-09-18 Miroslav Planeta Reversible surface winder
KR100916076B1 (en) * 2007-12-10 2009-09-08 주식회사 포스코 Cutting apparatus
CN203768712U (en) * 2013-11-08 2014-08-13 株式会社瑞光 Fabric cutting device
US11434102B2 (en) * 2019-09-03 2022-09-06 Applied Motion Systems, Inc. Core slabbing apparatus
CN111113523B (en) * 2020-01-10 2024-03-12 中国建筑第八工程局有限公司 Cutting device and method for waterproof coiled material of anchor rod
CN112642969A (en) * 2020-12-30 2021-04-13 赣州市领沃电子科技有限公司 Data line fixed-length cutting device based on 5G communication technology
CN112917986A (en) * 2021-01-20 2021-06-08 宜春惠众生物能源有限公司 Make-up machine is used in mechanism charcoal production
CN113427559B (en) * 2021-07-02 2023-03-10 西安交通大学医学院第二附属医院 Nano fetuin test paper for monitoring diabetic retinopathy and preparation process thereof

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CN111169027A (en) * 2020-01-09 2020-05-19 苏州惠国塑料制品有限公司 PE film efficient blow molding production line

Also Published As

Publication number Publication date
DE50114783D1 (en) 2009-05-07
ATE426490T1 (en) 2009-04-15
US6766722B2 (en) 2004-07-27
CA2357579A1 (en) 2002-03-22
EP1190821B1 (en) 2009-03-25
US20020066347A1 (en) 2002-06-06
EP1190821A3 (en) 2004-11-03
DE10047545B4 (en) 2007-12-27
JP2002187669A (en) 2002-07-02
BR0104166A (en) 2002-05-28
DE10047545A1 (en) 2002-05-02

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