EP0775040A1 - Cutter with ring-shaped blade - Google Patents

Cutter with ring-shaped blade

Info

Publication number
EP0775040A1
EP0775040A1 EP95925737A EP95925737A EP0775040A1 EP 0775040 A1 EP0775040 A1 EP 0775040A1 EP 95925737 A EP95925737 A EP 95925737A EP 95925737 A EP95925737 A EP 95925737A EP 0775040 A1 EP0775040 A1 EP 0775040A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting device
guide element
flank
knife
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
EP95925737A
Other languages
German (de)
French (fr)
Other versions
EP0775040B1 (en
Inventor
Mario Hiss
Frank Schreiber
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.)
Lupra D Kehret KG Lufthydraulische Praezisionsapp
Original Assignee
LUPRA D KEHRET LUFTHYDRAULISCHE PRAZISIONSAPPARATE
AS-DRUCK GmbH
Druck As GmbH
LUPRA D KEHRET LUFTHYDRAULISCH
LUPRA D KEHRET LUFTHYDRAULISCHE PRAZISIONSAPPARATE
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 LUPRA D KEHRET LUFTHYDRAULISCHE PRAZISIONSAPPARATE, AS-DRUCK GmbH, Druck As GmbH, LUPRA D KEHRET LUFTHYDRAULISCH, LUPRA D KEHRET LUFTHYDRAULISCHE PRAZISIONSAPPARATE filed Critical LUPRA D KEHRET LUFTHYDRAULISCHE PRAZISIONSAPPARATE
Publication of EP0775040A1 publication Critical patent/EP0775040A1/en
Application granted granted Critical
Publication of EP0775040B1 publication Critical patent/EP0775040B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/10—Making cuts of other than simple rectilinear form
    • 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
    • B26D1/44—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 cup or like cutting member
    • B26D1/445—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 cup or like cutting 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0068—Trimming and removing web edges

Definitions

  • the invention relates to a cutting device for separating material from a thin object with a ring knife rotatable about a central axis, which has an annularly closed outer cutting flank and an annularly closed inner cutting flank which taper towards an annular cutting edge and are attached to a floor and with a guide element for guiding the thin object to be processed.
  • Such a cutting device is known from DE 27 50 835 A1.
  • a ring knife is provided with an annularly closed outer cutting flank and an annularly closed inner cutting flank, which run inclined towards one another to form an annular cutting edge.
  • the ring knife which is rotatable about a central axis, is closed off by a bottom opposite the cutting edge, to which the cutting flanks are attached.
  • a roller is provided as a guide element, via which a thin object, for example paper or cardboard, can be fed tangentially to the cutting edge.
  • the roller is adjusted at a radial distance from the cutting edge that is smaller than the material thickness of the object.
  • the inner cutting flank is cylindrical, while the outer cutting flank is chamfered radially outwards.
  • the object is with a pressing device opposite the roller. preferably a compressed air nozzle, printed on the roll.
  • a pressing device opposite the roller.
  • the paper or cardboard web slides onto the bevel of the outer esserf flank, so that a bending stress is generated in the area of the cutting edge in the object to be processed, which facilitates the chip's lifting.
  • this cutting device allows the separation of relatively narrow strips from the thin object, for example to form folded edges or glue grooves
  • the generic cutting device is not very suitable for separating material over the entire thickness of the thin object, because of the tangential feed of the object on the cutting edge a thin. outgoing and irregular tearing separating edge is formed.
  • adjustment of the cutting device to achieve different end widths of the object to be processed is not practical.
  • the cutting element is formed by a disk-shaped cutting wheel, the cutting edge being formed by mutually inclined cutting flanks on both sides of a central plane on the circumference of the cutting wheel.
  • the cutting wheel is usually placed on a thin object to be cut, for example a paper web, and when the The paper web can be severed in the direction of the cutting wheel.
  • the paper web is carried out between the cutting wheel and a cutting roller, the cutting wheel resting on the cutting roller with a certain pressure.
  • These cutting devices have the disadvantage that, depending on the pressure of the cutting wheel on the cutting roller, undesired notches are inserted into the cutting roller relatively quickly and the cutting edge of the cutting wheel wears out relatively quickly.
  • the paper web is fed to a free-standing cutting wheel with a relatively large diameter.
  • the cutting edge is less worn compared to the aforementioned configurations, but it is relatively expensive to coordinate the machine parameters such as feed speed and / or speed of the cutting wheel with one another in order to achieve a good cutting effect in the case of changing paper thicknesses, since the feed rate is often determined by printing processes.
  • the invention has for its object to provide a cutting device of the type mentioned, with which a thin object, in particular a paper web, can be cut with a clean separating edge and with widths that can be set in a simple manner.
  • the outer cutting flank is cylindrical, that the inner cutting flank is abutted in the direction of the central axis, that the guide element is arranged oblong and centrally in the region of the central axis and that the bottom in the direction of the central axis of the guide element is technological.
  • an elongate guiding element By arranging an elongate guiding element essentially in the middle of the ring knife, a clean separating edge is produced by the right-angled feeding of, for example, a paper web onto the cutting edge. Furthermore, the object is deflected past the outer, cylindrically shaped cutting flank without being deflected, while the severed material strip is deflected around the guide element when it first hits the arched floor and, for example, is guided to a discharge device due to a stress-free cut. In particular, even after the separated material has been torn off, an appropriate threading of the separated material into the removal device can thus be achieved with a corresponding orientation of the removal device.
  • the cutting device according to the invention also allows simple adjustment of the width of the separated material by simply displacing the ring knife transversely to the thin object to be processed, which is only limited by the diameter of the ring knife.
  • the guide element does not have to be readjusted.
  • the ring knife When the cutting device according to the invention is used in conjunction with a roller printing machine, the ring knife can in particular also be fed with paper webs, which are stacked several times one above the other, with edges offset transversely to the running direction, in order to obtain cleanly cut paper webs of the same width. Moreover, for machining on both sides, the cutting devices can be installed upside down both to the right and to the left without changing the mechanical structure in the running direction.
  • the network phases are connected in opposite directions for the same direction of rotation with respect to the paper web.
  • FIG. 1 is a perspective view of a preferred embodiment of the invention
  • FIG. 2 shows the exemplary embodiment according to FIG. 1 with a paper web to be cut in a perspective representation
  • FIG. 3 shows a section through an exemplary embodiment according to FIG. 1.
  • Fig. 1 shows a perspective view of a preferred embodiment of a cutting device according to the invention with a pot-like ring knife 1. on which an edge 4 is formed by an outer knife edge 2 and an inner knife edge 3, which are inclined and closed in a ring shape.
  • the inner knife flank 3 is tapered towards the outer knife flank 2 in the direction of a central screw 5, while the outer knife flank 2 has a cylindrical shape.
  • a knife base 6 is provided between the inner knife flank 3 and covers the inner surface of the ring knife 1, abutting the inner knife flank 3.
  • the ring knife 1 is rotatably attached to a base plate 8 via a spacer ring 7.
  • the diameter of the spacer ring 7 corresponds to the outer diameter of the ring knife 1 or the outer knife flank 2.
  • a support table 11 is attached to the spacer ring 7 with two fastening screws 9, 10 and extends along the spacer 7 from the base plate 8 into the area of the Cutting edge 4 extends. In the area of the support table 11, the ring knife 1 and the spacer ring 7 are aligned with the long side of the base plate 8.
  • the support table 11 has a swivel hinge 12 with which it can be rotated about a hinge axis 13 Swivel table 14 is connected to the table 11 on.
  • the swivel table 14 extends from a section of the cutting edge 4 adjacent to the swivel hinge 12 over the inside of the ring knife 1 to the opposite section of the cutting edge 4.
  • a swivel surface 15 of the swivel table 14 is arranged on the diameter of the ring knife 1 and is essentially at right angles on the cutting edge 4. Furthermore, part of the swivel surface 15 enters the knife base 6 in the direction of the knife base 6 Ring knife 1, a cutting recess 16 being provided at the end of the swivel table 14 adjoining the swivel hinge 12, into which the cutting edge 4 engages.
  • the length of the swivel table 14 is dimensioned such that the end of the swivel table 14 opposite the swivel hinge 12 closes in the region of the inner knife flank 3. In the orientation according to FIG. 1, the swivel surface 15 and a support surface 17 of the support table 11 lie in one plane.
  • An electric drive motor 18 is attached to the base plate 8 opposite the ring knife 1, with which the ring knife 1 can be driven in two directions of rotation.
  • a guide block 20 is fastened to the base plate 8, through which a first slide rod 21 and a second slide rod 22 are passed.
  • the cutting device shown in FIG. 1 is manually along the Slide rods 21, 22 slidable and fixable in one position with a locking lever 23.
  • the cutting device can be moved periodically between two edge positions with a displacement drive on the slide rods 21, 22.
  • the slide rods 21, 22 are inserted at one end into a wall holding part 24 and firmly connected to this.
  • the Wandhai tetei 1 24 can be fastened with retaining screws 25, 26, 27, 28 to a side wall, for example a roller rotating machine.
  • the wall holding part 24 can be fastened on one side with a pressure piece 29, the pressure piece 29 being held by two holding screws 27, 28.
  • FIG. 2 shows a perspective view of the cutting device according to FIG. 1 in operation when cutting a paper web 30 shown in detail in FIG. 2.
  • the paper web 30 is, for example, in a roll rotating machine represented by the cutout of a side wall 31 an arrow marked conveying direction 32 to the cutting device attached to the wall holding part 24 on the side wall 31.
  • the paper web 30 lies on the swivel surface 15 of the swivel table 14 and on the support surface 17 of the bearing 11 that is not visible in the illustration according to FIG. 2.
  • a section 33 of the paper web 30 resting on the swivel surface 15 can be cut off from the paper web 30 with the cutting edge 4 rotating in a direction of rotation represented by an arrow 34.
  • the plane of rotation of the cutting edge 4 is in this embodiment example at right angles to the direction 32.
  • a cutting strip 35 with a constant width of section 33 is deflected around the swivel table 14, in a discharge direction 36 indicated by an arrow, is fed to a discharge device having a suction hose 37 and removed from the cutting device, while the remaining part of the Paper web 30 runs past the outer knife edge 2, the spacing 7, the base plate 8 and the cover 19. In this way, a continuous disposal of the cut strip 35 is ensured
  • the paper web 30 can be trimmed with a wave edge with a changing width of the section 33.
  • FIG. 3 shows a longitudinal section of a cutting device corresponding to FIGS. 1 and 2 with drive elements for driving the ring knife 1.
  • a motor pulley 40 is attached to a shaft 39 of the drive motor 18, which rotates the shaft 39 transferred to a knife pulley 41 via a toothed belt (not shown in FIG. 3).
  • the toothed belt can be tensioned with a belt tensioner 42, which is rotatably mounted eccentrically in the base plate 8.
  • the knife pulley 41 is connected with the central screw 5 to the ring knife 1
  • the central screw 5 extends in the longitudinal direction through a knife column 43 of the ring knife 1, the knife column 43 having two column bearings 44, 45 being freely rotatably mounted in the bearing ring 7 attached to the base plate with fastening screws 46, 47.
  • the side of the ring knife 1 pointing in the direction of the swivel surface 15 is covered with a knife cover plate 48 for safety reasons in order to avoid injuries due to the free part of the cutting edge 4.
  • the edges of the swivel table 14 are rounded off in order to ensure damage-free sliding over the swivel table 14 when the paper web 30 is fed in transversely to the longitudinal direction of the central screw 5, even if the swivel surface 15 is not exactly in the plane of the paper web is arranged.
  • the curvature of the knife base 6 in the direction of the central screw 5 ensures a reliable deflection of the cutting strip 35 when the paper web 30 is first cut.
  • the guide block 20 is countered by a locking screw 49 which can be pressed onto the slide rod 21 an unintentional displacement of the cutting device is f ix ible.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

The invention concerns a cutter intended to cut, in particular, a continuous web of paper (30), the cutting element of the cutter being a ring-shaped blade (1) which rotates in one direction (34) and is disposed at right angles to the direction of advance (32) of the web (30) to trim the edge of the web. The cutter can be displaced by means of sliding bars (21, 22) to enable strips (33) of different width to be cut off without difficulty.

Description

SCHNEIDVORRICHTUNG MIT DREHBAREM RINGMESSER. CUTTING DEVICE WITH ROTATING RING KNIFE.
Die Erfindung betrifft eine Schneidvorrichtung zum Abtrennen von Material von einem dünnen Gegenstand mit einem um eine Zentralachse drehbaren Ringmesser, das eine ringförmig geschlossene äußere Schneidflanke sowie eine ringförmig geschlossene innere Schneidflanke auf¬ weist, die gegeneinander geneigt zu einer ringförmigen Schneide zulaufen und an einem Boden angebracht sind, und mit einem Führungselement zur Führung des zu bear¬ beitenden dünnen Gegenstandes.The invention relates to a cutting device for separating material from a thin object with a ring knife rotatable about a central axis, which has an annularly closed outer cutting flank and an annularly closed inner cutting flank which taper towards an annular cutting edge and are attached to a floor and with a guide element for guiding the thin object to be processed.
Eine derartige Schneidvorrichtung ist aus der DE 27 50 835 A1 bekannt. Bei dieser Schneidvorrichtung ist ein Ringmesser mit einer ringförmig geschlossenen äußeren Schneidflanke sowie einer ringförmig geschlossenen inneren Schneidflanke vorgesehen, die gegeneinander geneigt zu einer ringförmigen Schneide zulaufen. Das um eine Zentralachse drehbare Ringmesser ist durch einen der Schneide gegenüberliegenden Boden abgeschlossen, an dem die Schneidflanken angebracht sind.Such a cutting device is known from DE 27 50 835 A1. In this cutting device, a ring knife is provided with an annularly closed outer cutting flank and an annularly closed inner cutting flank, which run inclined towards one another to form an annular cutting edge. The ring knife, which is rotatable about a central axis, is closed off by a bottom opposite the cutting edge, to which the cutting flanks are attached.
Im Randbereich des Ringmessers nahe der Schneide ist eine Rolle als Führungselement vorgesehen, über die ein dünner Gegenstand, beispielsweise Papier oder Karton, tangential zu der Schneide zuführbar ist. Die Rolle ist in einem radialen Abstand von der Schneide einjustiert, der kleiner als die Materialstärke des Gegenstandes ist. Die innere Schneidflanke ist zylindrisch ausgebildet, während die äußere Schneidflanke radial nach außen angeschrägt ist. Bei Auftreffen des zugeführten Gegen¬ standes auf die Schneide wird ein dünner Span ab¬ getrennt, dessen Dicke dem radialen Abstand der Rolle von der Schneide entspricht. Die Breite des Spanes ist durch den Radius des Hohlmessers, den Anpreßdruck, der Form der Rolle und der Steif lgkeit des dünnen Gegen¬ standes bestimmt.In the edge area of the ring knife near the cutting edge, a roller is provided as a guide element, via which a thin object, for example paper or cardboard, can be fed tangentially to the cutting edge. The roller is adjusted at a radial distance from the cutting edge that is smaller than the material thickness of the object. The inner cutting flank is cylindrical, while the outer cutting flank is chamfered radially outwards. When the supplied object hits the cutting edge, a thin chip is cut off, the thickness of which corresponds to the radial distance of the roll from the cutting edge. The width of the chip is determined by the radius of the hollow knife, the contact pressure, the shape of the roll and the stiffness of the thin object.
Der Gegenstand ist mit einer der Rolle gegenüber¬ liegenden Anpreßeinrichtung. vorzugsweise einer Preß- luftduse, auf die Rolle niedergedruckt. Nach Abheben des Spanes gleitet die Papier- oder Kartonbahn auf die Anschragung der äußeren esserf lanke auf, so daß im Bereich der Schneide in dem zu bearbeitenden Gegenstand eine Biegespannung erzeugt ist, die das Abheben des Spanes erleichtert.The object is with a pressing device opposite the roller. preferably a compressed air nozzle, printed on the roll. After the chip is lifted, the paper or cardboard web slides onto the bevel of the outer esserf flank, so that a bending stress is generated in the area of the cutting edge in the object to be processed, which facilitates the chip's lifting.
Diese Schneidvorrichtung gestattet zwar das Abtrennen von verhältnismäßig schmalen Streifen aus dem dünnen Gegenstand, beispielsweise um Faltkanten oder Leimnuten zu bilden, allerdings ist die gattungsge aße Schneid- vorπchtung wenig geeignet, um Material über die gesamte Dicke des dünnen Gegenstandes abzutrennen, da durch die tangentiale Zufuhrung des Gegenstandes auf die Schneide eine dunr. auslaufende und zu unregelmäßigem Abriß neigende Trennkante ausgebildet ist. Zudem ist eine Justierung der Schneidvorrichtung zum Erzielen ver¬ schiedener Endbreiten des zu bearbeitenden Gegenstandes nicht praktikabel.Although this cutting device allows the separation of relatively narrow strips from the thin object, for example to form folded edges or glue grooves, the generic cutting device is not very suitable for separating material over the entire thickness of the thin object, because of the tangential feed of the object on the cutting edge a thin. outgoing and irregular tearing separating edge is formed. In addition, adjustment of the cutting device to achieve different end widths of the object to be processed is not practical.
Weiterhin sind als Schneideinrichtungen beispielsweise sogenannte Ober- oder Untermesser bei Rollendruck- maschinen bekannt. Das Schneidelement ist durch ein scheibenförmiges Schneidrad gebildet, wobei die Schneide durch gegeneinander geneigte Schneidflanken beidseitig einer Mittelebene auf dem Umfang des Schneidrades aus¬ gebildet ist. Üblicherweise ist das Schneidrad auf einem dünnen zu schneidenden Gegenstand, beispielsweise einer Papierbahn, aufgesetzt und bei einer Verschiebung der Papierbahn in Richtung des Schneidrades ist die Papier¬ bahn durchtrennbar .Furthermore, so-called upper or lower knives in web printing machines are known as cutting devices. The cutting element is formed by a disk-shaped cutting wheel, the cutting edge being formed by mutually inclined cutting flanks on both sides of a central plane on the circumference of the cutting wheel. The cutting wheel is usually placed on a thin object to be cut, for example a paper web, and when the The paper web can be severed in the direction of the cutting wheel.
In einer Ausführungsform von derartigen letztgenannten Schneideinrichtungen mit Schneidrädern ist die Papier¬ bahn zwischen dem Schneidrad und einer Schneidrolle durchgeführt, wobei das Schneidrad mit einem gewissen Andruck auf der Schneidrolle aufliegt. Diese Schneid¬ einrichtungen weisen den Nachteil auf, daß in Abhangig- keit des Andruckes des Schneidrades auf die Schneidrolle verhältnismäßig schnell unerwünschte Kerben in die Schneidrolle eingesch itten werden und sich die Schneide des Schneidrades verhältnismäßig schnell abnutzt.In one embodiment of such last-mentioned cutting devices with cutting wheels, the paper web is carried out between the cutting wheel and a cutting roller, the cutting wheel resting on the cutting roller with a certain pressure. These cutting devices have the disadvantage that, depending on the pressure of the cutting wheel on the cutting roller, undesired notches are inserted into the cutting roller relatively quickly and the cutting edge of the cutting wheel wears out relatively quickly.
In einer weiteren Ausführungsform einer Schneid¬ einrichtung in Rollendruckmaschinen ist die Papierbahn einem freistehenden Schneidrad mit einem verhältnismäßig großen Durchmesser zugeführt. Bei dieser Ausführungsform ist zwar die Schneide im Vergleich zu den vorgenannten Ausgestaltungen weniger abgenutzt, es ist jedoch ver¬ hältnismäßig aufwendig, bei wechselnden Papierstärken zum Erreichen einer guten Schneidwirkung die Maschinen¬ parameter wie Zuführgeschwindigkeit und/oder Drehzahl des Schneidrades aufeinander abzustimmen, da beispiels- weise die Zuführgeschwindigkeit häufig durch Druck¬ vorgänge festgelegt ist.In a further embodiment of a cutting device in web-fed printing machines, the paper web is fed to a free-standing cutting wheel with a relatively large diameter. In this embodiment, the cutting edge is less worn compared to the aforementioned configurations, but it is relatively expensive to coordinate the machine parameters such as feed speed and / or speed of the cutting wheel with one another in order to achieve a good cutting effect in the case of changing paper thicknesses, since the feed rate is often determined by printing processes.
Bei beiden Ausführungsformen von Schneideinrichtungen in Rollendruckmaschinen mit Schneidrädern ist es bedingt durch den verhältnismäßig großen Platzbedarf häufig nicht praktikabel, eine Rollendruckmaschine mit einer Schneideinrichtung zum Beschneiden von Papierbahnen mit häufigen wechselnden Breiten des abgetrennten Teiles nachzurüsten. Der Erfindung liegt die Aufgabe zugrunde, eine Schneid¬ vorrichtung der eingangs genannten Art zu schaffen, mit der ein dunner Gegenstand, insbesondere eine Papierbahn, mit einer sauberen Trennkante und mit in einfacher Weise einzustellenden Breiten zuschneidbar ist.In both embodiments of cutting devices in web-fed printing machines with cutting wheels, it is often not practical due to the relatively large space requirement to retrofit a web-fed printing machine with a cutting device for trimming paper webs with frequently changing widths of the separated part. The invention has for its object to provide a cutting device of the type mentioned, with which a thin object, in particular a paper web, can be cut with a clean separating edge and with widths that can be set in a simple manner.
Diese Aufgabe wird erfindungsgemaß dadurch gelost, daß die äußere Schneidflanke zylindrisch ist, daß die innere Schneidflanke in Richtung der Zentralachse angeschragt ist, daß das Fuhrungselement länglich und mittig im Bereich der Zentralachse angeordnet ist und daß der Boden in Richtung der Zentralachse von dem Fuhrungs¬ element wegweisend gewölbt ist.This object is achieved according to the invention in that the outer cutting flank is cylindrical, that the inner cutting flank is abutted in the direction of the central axis, that the guide element is arranged oblong and centrally in the region of the central axis and that the bottom in the direction of the central axis of the guide element is groundbreaking.
Durch das Anordnen eines länglich ausgebildeten Fuhrungselementes im wesentlichen in der Mitte des Ringmessers ist durch die rechtwinklige Zufuhrung beispielsweise einer Papierbahn auf die Schneide eine saubere Trennkante erzeugt. Weiterhin ist der Gegenstand nach dem Durchtrennen umlenkungsfrei an der äußeren, zylindrisch ausgebildeten Schneidflanke vorbeigefuhrt , wahrend der abgetrennte Mater lalstreifen bei einem Erstanschnitt nach Auftreffen auf den gewölbten Boden um das Fuhrungselement umgelenkt und beispielsweise einer Abfuhreinrichtung aufgrund eines spannungsfreien Schnittes zielsicher zugeführt ist. Insbesondere auch nach einem Abriß des abgetrennten Mateπales kann somit bei entsprechender Ausrichtung der Abfuhreinrichtung ein selbsttät ges Einfädeln des abgetrennten Mateπales in die Abfuhreinrichtung erzielt werden.By arranging an elongate guiding element essentially in the middle of the ring knife, a clean separating edge is produced by the right-angled feeding of, for example, a paper web onto the cutting edge. Furthermore, the object is deflected past the outer, cylindrically shaped cutting flank without being deflected, while the severed material strip is deflected around the guide element when it first hits the arched floor and, for example, is guided to a discharge device due to a stress-free cut. In particular, even after the separated material has been torn off, an appropriate threading of the separated material into the removal device can thus be achieved with a corresponding orientation of the removal device.
Die erfindungsgemaße Schneidvorrichtung gestattet weiterhin durch einfaches Versetzen des Ringmessers quer zu dem zu bearbei enden dünnen Gegenstand eine einfache Einstellung der Breite des abgetrennten Mateπales, welche lediglich durch den Durchmesser des Ringmessers begrenzt ist. Insbesondere muß dabei das Führungselement nicht nachjustiert werden.The cutting device according to the invention also allows simple adjustment of the width of the separated material by simply displacing the ring knife transversely to the thin object to be processed, which is only limited by the diameter of the ring knife. In particular, the guide element does not have to be readjusted.
Ist das Schneiden mit verhältnismäßig häufig wechselnden Schnittbreiten notwendig, ist es zweckmäßig die Schneid¬ vorrichtung an quer zu der Ve schieberichtung aus¬ gerichteten Stangen verschiebbar anzubringen, so daß in einfacher Weise durch Verschieben der Schneidvorrichtung verschiedene Schnittbreiten einstellbar sind.If cutting with relatively frequently changing cutting widths is necessary, it is expedient to mount the cutting device on rods which are oriented transversely to the direction of displacement, so that different cutting widths can be set in a simple manner by moving the cutting device.
Bei einer Verwendung der erfindungsgemäßen Schneid¬ vorrichtung in Verbindung mit einer Ro1 lendruckmaschine sind dem Ringmesser insbesondere auch mehrfach über- einander gelegte Papierbahnen mit quer zu der Lauf¬ richtung versetzten Rändern zuführbar, um sauber zu¬ geschnittene Papierbahnen gleicher Breite zu erhalten. Überdies sind zum beidseitigen Bearbeiten die Schneid¬ vorrichtungen ohne Änderung des mechanischen Aufbaus in Laufrichtung sowohl rechts als auch links über Kopf einbaubar. Bei Antrieb der Ringmesser durch Elektro¬ motoren sind die Netzphasen für bezüglich der Papierbahn gleichsinniger Drehrichtung gegensinnig angeschlossen.When the cutting device according to the invention is used in conjunction with a roller printing machine, the ring knife can in particular also be fed with paper webs, which are stacked several times one above the other, with edges offset transversely to the running direction, in order to obtain cleanly cut paper webs of the same width. Moreover, for machining on both sides, the cutting devices can be installed upside down both to the right and to the left without changing the mechanical structure in the running direction. When the ring knives are driven by electric motors, the network phases are connected in opposite directions for the same direction of rotation with respect to the paper web.
Weitere zweckmäßige Ausgestaltungen und Vorteile der Erfindung sind Gegenstand der Unteransprüche und der nachfolgenden Figurenbeschreibung. Es zeigen:Further expedient refinements and advantages of the invention are the subject of the dependent claims and the following description of the figures. Show it:
Fig. 1 in einer perspektivischen Ansicht ein bevor- zugtes Ausführungsbeispiel der erfindungsgemäßen1 is a perspective view of a preferred embodiment of the invention
Schneidvorrichtung, die auf Gleitstangen ver¬ schiebbar ist, Fig. 2 das Ausfuhrungsbeispiβl gemäß Fig. 1 mit einer zu beschneidenden Papierbahn in perspektivischer Darste1 lung undCutting device which can be moved on slide rods FIG. 2 shows the exemplary embodiment according to FIG. 1 with a paper web to be cut in a perspective representation and
Fig. 3 einen Schnitt durch ein Ausfuhrungsbeisplel gemäß Fig. 1.3 shows a section through an exemplary embodiment according to FIG. 1.
Fig. 1 zeigt in einer perspektivischen Ansicht ein bevorzugtes Ausfuhrungsbeispiel einer erf indungsgemaßen Schneidvor ichtung mit einem topfartigen Ringmesser 1. an dem durch eine äußere Messerflanke 2 und eine innere Messerflanke 3, die gegeneinander geneigt und ringförmig geschlossen sind, eine Schneide 4 ausgebildet ist. In diesem Ausfuhrungsbeisplel ist die innere Messerflanke 3 gegen die äußere Messerflanke 2 in Richtung einer Zentralschraube 5 zulaufend angeschragt , wahrend die äußere Messerflanke 2 eine zylindrische Gestalt auf¬ weist. Zwischen der inneren Messerflanke 3 ist ein Messerboden 6 vorgesehen, der an die innere Messerflanke 3 anstoßend die Innenflache des Ringmessers 1 bedeckt.Fig. 1 shows a perspective view of a preferred embodiment of a cutting device according to the invention with a pot-like ring knife 1. on which an edge 4 is formed by an outer knife edge 2 and an inner knife edge 3, which are inclined and closed in a ring shape. In this exemplary embodiment, the inner knife flank 3 is tapered towards the outer knife flank 2 in the direction of a central screw 5, while the outer knife flank 2 has a cylindrical shape. A knife base 6 is provided between the inner knife flank 3 and covers the inner surface of the ring knife 1, abutting the inner knife flank 3.
Das Ringmesser 1 ist über einen Abstandsring 7 drehbar an einer Grundplatte 8 befestigt. Der Durchmesser des Abstandsringes 7 entspricht dem Außendurchmesser des Ringmessers 1 beziehungsweise der äußeren Messerflanke 2. An dem Abstandsring 7 ist mit zwei Befestigungs¬ schrauben 9, 10 ein Auflagetisch 11 angebracht, der sich längs des Abstandπnges 7 von der Grundplatte 8 bis in den Bereich der Schneide 4 erstreckt. Im Bereich des Auflägetisches 11 fluchten das Ringmesser 1 sowie der Abstandsring 7 mit der Längsseite der Grundplatte 8.The ring knife 1 is rotatably attached to a base plate 8 via a spacer ring 7. The diameter of the spacer ring 7 corresponds to the outer diameter of the ring knife 1 or the outer knife flank 2. A support table 11 is attached to the spacer ring 7 with two fastening screws 9, 10 and extends along the spacer 7 from the base plate 8 into the area of the Cutting edge 4 extends. In the area of the support table 11, the ring knife 1 and the spacer ring 7 are aligned with the long side of the base plate 8.
An dem im Bereich der Schneide 4 angeordneten Ende desAt the arranged in the area of the cutting edge 4
Auflägetisches 11 ist ein Schwenkscharnier 12 vor- gesehen, mit dem um eine Scharnierachse 13 drehbar ein Schwenktisch 14 mit dem Auf lagetisch 11 verbunden ist. Der Schwenktisch 14 erstreckt sich von einem dem Schwenkscharnier 12 benachbarten Abschnitt der Schneide 4 über die Innenseite des Ringmessers 1 bis zu dem gegenüberliegenden Abschnitt der Schneidkante 4.The support table 11 has a swivel hinge 12 with which it can be rotated about a hinge axis 13 Swivel table 14 is connected to the table 11 on. The swivel table 14 extends from a section of the cutting edge 4 adjacent to the swivel hinge 12 over the inside of the ring knife 1 to the opposite section of the cutting edge 4.
In dem in Fig. 1 dargestellten Ausfuhrungsbeispiel ist eine Schwenkflache 15 des Schwenktisches 14 auf dem Durchmesser des Ringmessers 1 angeordnet und steht im wesentlichen rechtwinklig auf der Schneide 4. Weiterhin tritt ein Teil der Schwenkflache 15 über die Schneide 4 in Richtung des Messerbodens 6 in das Ringmesser 1 ein, wobei an dem an das Schwenkscharnier 12 angrenzende Ende des Schwenktisches 14 eine Schneideausnehmung 16 vor- gesehen ist, in die die Schneide 4 eingreift. Die Lange des Schwenktisches 14 ist so bemessen, daß das dem Schwenkscharnier 12 gegenüberliegende Ende des Schwenk¬ tisches 14 im Bereich der inneren Messerflanke 3 ab¬ schließt. In der Ausrichtung gemäß Fig. 1 liegen die Schwenkflache 15 und eine Auflageflache 17 des Auflage- tisches 11 in einer Ebene.In the exemplary embodiment shown in FIG. 1, a swivel surface 15 of the swivel table 14 is arranged on the diameter of the ring knife 1 and is essentially at right angles on the cutting edge 4. Furthermore, part of the swivel surface 15 enters the knife base 6 in the direction of the knife base 6 Ring knife 1, a cutting recess 16 being provided at the end of the swivel table 14 adjoining the swivel hinge 12, into which the cutting edge 4 engages. The length of the swivel table 14 is dimensioned such that the end of the swivel table 14 opposite the swivel hinge 12 closes in the region of the inner knife flank 3. In the orientation according to FIG. 1, the swivel surface 15 and a support surface 17 of the support table 11 lie in one plane.
An der Grundplatte 8 ist dem Ringmesser 1 gegenüber¬ liegend ein elektrischer Antriebsmotor 18 angebracht, mit dem das Ringmesser 1 in zwei Drehrichtungen antreib¬ bar ist. Auf der Ruckseite der Grundplatte 8 sind in der Darstellung gemäß Fig. 1 nicht sichtbare Getriebe¬ elemente vorgesehen, die mit einem Deckel 19 abgedeckt sind.An electric drive motor 18 is attached to the base plate 8 opposite the ring knife 1, with which the ring knife 1 can be driven in two directions of rotation. On the rear side of the base plate 8, in the illustration according to FIG. 1, not visible gear elements are provided, which are covered with a cover 19.
Zwischen dem Ringmesser 1 und dem Antriebsmotor 18 ist an der Grundplatte 8 ein Fuhrungsblock 20 befestigt, durch den eine erste Gleitstange 21 und eine zweite Gleitstange 22 durchgeführt sind. Die in Fig. 1 dar- gestellte Schneidvorπchtung ist von Hand entlang der Gleitstangen 21, 22 verschiebbar und an einer Position mit einem Arretierhebel 23 fixierbar.Between the ring knife 1 and the drive motor 18, a guide block 20 is fastened to the base plate 8, through which a first slide rod 21 and a second slide rod 22 are passed. The cutting device shown in FIG. 1 is manually along the Slide rods 21, 22 slidable and fixable in one position with a locking lever 23.
In einer abgewandelten, nicht dargestellten Ausführungs- form ist die Schneidvorrichtung mit einem Verschiebe¬ antrieb auf den Gleitstangen 21, 22 periodisch zwischen zwei Randpositionen verschiebbar.In a modified embodiment, not shown, the cutting device can be moved periodically between two edge positions with a displacement drive on the slide rods 21, 22.
Die Gleitstangen 21, 22 sind mit jeweils einem Ende in ein Wandhalteteil 24 eingeführt und mit diesem fest verbunden. Das Wandhai tetei 1 24 ist mit Halteschrauben 25, 26, 27, 28 an einer Seitenwand beispielsweise einer Rollenrotationsmaschine befestigbar. In dem Ausführungs¬ beispiel gemäß Fig. 1 ist vorgesehen, daß das Wandhalte- teil 24 auf einer Seite mit einem Andruckstück 29 be¬ festigbar ist, wobei das Andruckstück 29 durch zwei Halteschrauben 27, 28 gehalten ist.The slide rods 21, 22 are inserted at one end into a wall holding part 24 and firmly connected to this. The Wandhai tetei 1 24 can be fastened with retaining screws 25, 26, 27, 28 to a side wall, for example a roller rotating machine. In the embodiment according to FIG. 1 it is provided that the wall holding part 24 can be fastened on one side with a pressure piece 29, the pressure piece 29 being held by two holding screws 27, 28.
Fig. 2 zeigt in einer perspektivischen Ansicht die Schneidvorrichtung gemäß Fig. 1 im Betrieb beim Be¬ schneiden einer in Fig. 2 ausschnittsweise dargestellten Papierbahn 30. Die Papierbahn 30 ist beispielsweise bei einer durch den Ausschnitt einer Seitenwand 31 dar¬ gestellten Rollenrotationsmaschine in einer durch einen Pfeil gekennzeichneten Förderrichtung 32 auf die mit dem Wandhalteteil 24 an der Seitenwand 31 angebrachten Schneidvorrichtung zugeführt. Die Papierbahn 30 liegt auf der Schwenkfläche 15 des Schwenktisches 14 sowie auf der in der Darstellung gemäß Fig. 2 nicht sichtbaren Auflagefläche 17 des Auf läget isches 11 auf. Ein auf der Schwenkfläche 15 aufliegender Abschnitt 33 der Papier¬ bahn 30 ist mit der sich in einer durch einen Pfeil dargestellten Drehrichtung 34 in einer Drehebene drehenden Schneide 4 von der Papierbahn 30 abschneidbar. Die Drehebene der Schneide 4 ist in diesem Ausführungs- beispiel rechtwinklig zu der Forderrichtung 32 aus¬ gerichtet. Ein Verschnittstreifen 35 mit einer kon¬ stanten Breite des Abschnittes 33 ist um den Schwenk¬ tisch 14 umgelenkt, in einer durch einen Pfeil gekenn- zeichneten Abfuhrr ichtung 36 einer einen Absaugschlauch 37 aufweisenden Abfuhreinrichtung zugeführt und von der Schneidvorrichtung entfernt, wahrend der übrige Teil der Papierbahn 30 an der äußeren Messerflanke 2, dem Ab- standsπng 7, der Grundplatte 8 sowie dem Deckel 19 vorbeilauft Auf diese Weise ist eine kontinuierliche Entsorgung des Verschnittstreifens 35 gewährleistetFIG. 2 shows a perspective view of the cutting device according to FIG. 1 in operation when cutting a paper web 30 shown in detail in FIG. 2. The paper web 30 is, for example, in a roll rotating machine represented by the cutout of a side wall 31 an arrow marked conveying direction 32 to the cutting device attached to the wall holding part 24 on the side wall 31. The paper web 30 lies on the swivel surface 15 of the swivel table 14 and on the support surface 17 of the bearing 11 that is not visible in the illustration according to FIG. 2. A section 33 of the paper web 30 resting on the swivel surface 15 can be cut off from the paper web 30 with the cutting edge 4 rotating in a direction of rotation represented by an arrow 34. The plane of rotation of the cutting edge 4 is in this embodiment example at right angles to the direction 32. A cutting strip 35 with a constant width of section 33 is deflected around the swivel table 14, in a discharge direction 36 indicated by an arrow, is fed to a discharge device having a suction hose 37 and removed from the cutting device, while the remaining part of the Paper web 30 runs past the outer knife edge 2, the spacing 7, the base plate 8 and the cover 19. In this way, a continuous disposal of the cut strip 35 is ensured
Bei einer periodischen Verschiebung der Schneid¬ vorrichtung zwischen zwei Randpositionen entlang der Längsrichtung der Gleitstangen 21, 22 ist die Papierbahn 30 bei einer wechselnden Breite des Abschnittes 33 mit einem Wellenrand beschneidbar.With a periodic displacement of the cutting device between two edge positions along the longitudinal direction of the slide rods 21, 22, the paper web 30 can be trimmed with a wave edge with a changing width of the section 33.
Weiterhin ist in Fig. 2 dargestellt, daß die Gleit- stangen 21, 22 mit den von dem Wandhaitetei 1 24 weg¬ weisenden Enden mit einem Stangenendtei 1 38 gehalten sind Dadurch ist ein gleichbleibender Abstand zwischen den Gleitstangen 21, 22 und damit ein einwandfreies Gleiten des Fuhrungsblockes 20 auf den Gleitstangen 21, 22 gewährleistet.Furthermore, it is shown in FIG. 2 that the slide rods 21, 22 are held with the ends pointing away from the wall holder 1 24 with a rod end part 38, which means that there is a constant distance between the slide rods 21, 22 and thus perfect sliding of the guide block 20 on the slide rods 21, 22 guaranteed.
Zu Beginn des Beschneidungsvorganges stoßt nach dem Anschnitt der Verschnittstreifen 35 auf den sich drehenden Messerboden 6 und ist in die Drehπchtung 34 abgelenkt. Bei einem entsprechenden Saugvermogen des an die Abfuhreinrichtung angeschlossenen Absaugschlauches 37 ist der Verschnittstreifen 35 bei einem Austritt aus dem Ringmesser 1 in Richtung der Seitenwand 31 selbst¬ tätig angesaugt und abgeführt. Fig. 3 zeigt in einem Längsschnitt eine Schneid¬ vorrichtung entsprechend Fig. 1 und Fig. 2 mit Antriebs¬ elementen zum Antreiben des Ringmessers 1. An einer Welle 39 des Antriebsmotors 18 ist eine Motorriemen- scheibe 40 angebracht, die die Drehung der Welle 39 über einen in Fig. 3 nicht dargestellten Zahπriemen auf eine Messerriemenscheibe 41 übertragt. Der Zahnriemen ist mit einem Riemenspanner 42 spannbar, der exzentrisch in der Grundplatte 8 drehbar befestigt ist Die Messerr lemen- scheibe 41 ist mit der Zentralschraube 5 mit dem Ring¬ messer 1 verbundenAt the beginning of the trimming process, after the cutting strips 35 have been cut, it hits the rotating knife base 6 and is deflected into the rotation 34. With a corresponding suction capacity of the suction hose 37 connected to the discharge device, the waste strip 35 is automatically sucked in and discharged when it emerges from the ring knife 1 in the direction of the side wall 31. FIG. 3 shows a longitudinal section of a cutting device corresponding to FIGS. 1 and 2 with drive elements for driving the ring knife 1. A motor pulley 40 is attached to a shaft 39 of the drive motor 18, which rotates the shaft 39 transferred to a knife pulley 41 via a toothed belt (not shown in FIG. 3). The toothed belt can be tensioned with a belt tensioner 42, which is rotatably mounted eccentrically in the base plate 8. The knife pulley 41 is connected with the central screw 5 to the ring knife 1
Die Zentra1schraube 5 erstreckt sich in Längsrichtung durch eine Messersaule 43 des Ringmessers 1, wobei die Messersaule 43 mit zwei Saulenlagern 44, 45 in dem mit Befestigungsschrauben 46, 47 an der Grundplatte ange¬ brachten Lagerring 7 frei drehbar gelagert ist.The central screw 5 extends in the longitudinal direction through a knife column 43 of the ring knife 1, the knife column 43 having two column bearings 44, 45 being freely rotatably mounted in the bearing ring 7 attached to the base plate with fastening screws 46, 47.
In der Schneidvorrichtung gemäß Fig. 3 ist die in Richtung der Schwenkflache 15 weisende Seite des Ring¬ messers 1 aus Sicherheitsgründen mit einer Messerabdeck¬ platte 48 abgedeckt, um Verletzungen durch den frei¬ stehenden Teil der Schneidkante 4 zu vermeiden. Weiter¬ hin sind die Kanten des Schwenktisches 14 abgerundet, um bei einer quer zu der Längsrichtung der Zentralschraube 5 erfolgenden Zufuhr der Papierbahn 30 ein be- schadigungsfreies Gleiten über den Schwenktisch 14 zu gewährleisten, auch wenn die Schwenkflache 15 nicht exakt in der Ebene der Papierbahn angeordnet ist. Die Wölbung des Messerbodens 6 in Richtung der Zentral¬ schraube 5 gewährleistet eine zuverlässige Umlenkung des Verschnittstreifens 35 bei einem Erstanschnitt der Papierbahn 30. Der Fuhrungsblock 20 ist mit einer an die Gleitstange 21 andruckbaren Arretierschraube 49 gegen ein unbeabsichtigtes Verschieben der Schneidvorrichtung f ix ierbar . In the cutting device according to FIG. 3, the side of the ring knife 1 pointing in the direction of the swivel surface 15 is covered with a knife cover plate 48 for safety reasons in order to avoid injuries due to the free part of the cutting edge 4. Furthermore, the edges of the swivel table 14 are rounded off in order to ensure damage-free sliding over the swivel table 14 when the paper web 30 is fed in transversely to the longitudinal direction of the central screw 5, even if the swivel surface 15 is not exactly in the plane of the paper web is arranged. The curvature of the knife base 6 in the direction of the central screw 5 ensures a reliable deflection of the cutting strip 35 when the paper web 30 is first cut. The guide block 20 is countered by a locking screw 49 which can be pressed onto the slide rod 21 an unintentional displacement of the cutting device is f ix ible.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1. Schneidvorrichtung zum Abtrennen von Material von einem dünnen Gegenstand (30) mit einem um eine1. Cutting device for separating material from a thin object (30) with one by one
Zentralachse (5) drehbaren Ringmesser, das eine ringförmig geschlossene äußere Schneidf lanke sowie eine ringförmig geschlossene innere Schneidf lanke aufweist, die gegeneinander geneigt zu einer ring- formigen Schneide zulaufen und an einem Boden (6) angebracht sind, und mit einem Fuhrungselement zur Fuhrung des zu bearbeitenden dünnen Gegenstandes (30), dadurch gekennzeichnet, daß die äußere Schneidf lanke (2) zylindrisch ist, daß die innere Schneidf lanke (3) in Richtung der Zentralachse (5) angeschragt ist, daß das Fuhrungselement (14) länglich und mittig im Bereich der Zentralachse (5) angeordnet, ist und daß der Boden (6) in Richtung der Zentralachse (5) von dem Fuhrungselement (14) weg- weisend gewölbt ist.Central axis (5) rotatable ring knife, which has an annularly closed outer cutting flank and an annularly closed inner cutting flank, which are inclined towards one another to form an annular cutting edge and are attached to a base (6), and with a guide element for guiding the to be machined thin object (30), characterized in that the outer cutting flank (2) is cylindrical, that the inner cutting flank (3) in the direction of the central axis (5) is applied, that the guide element (14) elongated and centered in Area of the central axis (5) is arranged, and that the bottom (6) is curved in the direction of the central axis (5) pointing away from the guide element (14).
2. Schneidvorrichtung nach Anspruch 1, dadurch gekenn¬ zeichnet, daß das Fuhrungselement ein der Schneide (4) vorgelagerter Tisch (14) ist, der eine quer zu der Schneide (4) stehende Flache (15) aufweist.2. Cutting device according to claim 1, characterized gekenn¬ characterized in that the guide element is one of the cutting edge (4) upstream table (14) which has a transverse to the cutting edge (4) standing surface (15).
3. Schneidvorrichtung nach Anspruch 2, dadurch gekenn¬ zeichnet, daß ein Teil der Flache (15) des Tisches (14) zwischen der inneren Schneidflanke (3) in das Ringmesser 1 ) hineinragend angeordnet ist.3. Cutting device according to claim 2, characterized gekenn¬ characterized in that part of the surface (15) of the table (14) between the inner cutting edge (3) in the ring knife 1) is arranged protruding.
4. Schneidvorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Flache (15) des Tisches (14) im Bereich des größten Durchmessers der Schneide (4) angeordnet ist. 4. Cutting device according to claim 2 or 3, characterized in that the surface (15) of the table (14) is arranged in the region of the largest diameter of the cutting edge (4).
5. Schneidvorrichtung nach einem der Ansprüche 2, 3 oder 4. dadurch gekennzeichnet, daß die Flache (15) des Tisches (14) schwenkbar ist.5. Cutting device according to one of claims 2, 3 or 4. characterized in that the surface (15) of the table (14) is pivotable.
6. Schneidvorrichtung nach Anspruch 1. dadurch gekenn¬ zeichnet, daß an die äußere Schneidf lanke (2) an¬ grenzend ein Außentisch (11) angeordnet ist.6. Cutting device according to claim 1, characterized in that an outer table (11) is arranged adjacent to the outer cutting flank (2).
7 Schneidvorrichtung nach Anspruch 5 und 6, dadurch gekennzeichnet, daß der Tisch (14) und der Außen¬ tisch (11) über ein Scharnier (12) miteinander verbunden sind, wobei der Tisch (14) um eine Achse (13) des Scharmeres (12) schwenkbar ist.7 cutting device according to claim 5 and 6, characterized in that the table (14) and the outer table (11) are connected to one another via a hinge (12), the table (14) about an axis (13) of the coulter ( 12) is pivotable.
8. Schneidvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine Positiomer- vorπchtung vorgesehen ist, mit der das Ringmesser (5) und das Fuhrungselement (14) in Längsrichtung des Fuhrungselementes (14) verschiebbar sind8. Cutting device according to one of claims 1 to 7, characterized in that a Positiomer- vorπchtung is provided with which the ring knife (5) and the guide element (14) in the longitudinal direction of the guide element (14) are displaceable
Schneidvorrichtung nach Anspruch 8, dadurch gekenn¬ zeichnet, daß das Ringmesser (5) und das Fuhrungs¬ element (14) periodisch zwischen zwei Randpositionen verschiebbar sind.Cutting device according to claim 8, characterized gekenn¬ characterized in that the ring knife (5) and the guide element (14) are periodically displaceable between two edge positions.
10. Schneidvorπchtung nach Anspruch 8 und 9, dadurch gekennzeichnet, daß das Ringmesser (5) und das Fuhrungselement (14) über Gleitstangen (21, 22) der Positioniervorrichtung an einer Seitenwand (31) ms- besondere einer Rol lenrotatlonsmaschine anbringbar10. Schneidvorπchtung according to claim 8 and 9, characterized in that the ring knife (5) and the guide element (14) via slide rods (21, 22) of the positioning device on a side wall (31) ms- particular a Rol lenrotatlonsmaschine attachable
11. Schneidvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß eine Abfuhr- einπchtung (37) vorgesehen ist, mit der ein von dem Gegenstand (30) abgetrennter, von dem Fuhrungs¬ element (14) und dem Boden (6) umgelenkter Teil (35) kontinuierlich abfuhrbar ist. 11. Cutting device according to one of claims 1 to 10, characterized in that a discharge device (37) is provided, with which one of the Object (30) separated part (35) deflected by the guide element (14) and the bottom (6) can be continuously removed.
EP95925737A 1994-08-13 1995-07-26 Cutter with ring-shaped blade Expired - Lifetime EP0775040B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4428785A DE4428785C1 (en) 1994-08-13 1994-08-13 Cutting device
DE4428785 1994-08-13
PCT/DE1995/000987 WO1996005029A1 (en) 1994-08-13 1995-07-26 Cutter with ring-shaped blade

Publications (2)

Publication Number Publication Date
EP0775040A1 true EP0775040A1 (en) 1997-05-28
EP0775040B1 EP0775040B1 (en) 1998-10-21

Family

ID=6525657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95925737A Expired - Lifetime EP0775040B1 (en) 1994-08-13 1995-07-26 Cutter with ring-shaped blade

Country Status (6)

Country Link
EP (1) EP0775040B1 (en)
AT (1) ATE172399T1 (en)
AU (1) AU2976295A (en)
DE (2) DE4428785C1 (en)
ES (1) ES2126912T3 (en)
WO (1) WO1996005029A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR565551A (en) * 1923-04-26 1924-01-30 Leather cutting machine
US1930489A (en) * 1932-01-15 1933-10-17 United Shoe Machinery Corp Skiving machine
BE522639A (en) * 1952-12-21 1953-09-30
DE2750835C3 (en) * 1977-11-14 1980-06-19 Jagenberg-Werke Ag, 4000 Duesseldorf Device for the continuous peeling off of longitudinal strips from a packaging web
FR2526444A1 (en) * 1982-05-04 1983-11-10 Despaux Marc Fleshing machine to thin hides partic. for taxidermy - guides hand fed hides to annular cutting edge of motorised wheel
US4621956A (en) * 1984-10-01 1986-11-11 Hartman Steven D Method and apparatus for cutting of flexible foam material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9605029A1 *

Also Published As

Publication number Publication date
AU2976295A (en) 1996-03-07
ATE172399T1 (en) 1998-11-15
ES2126912T3 (en) 1999-04-01
DE59504006D1 (en) 1998-11-26
EP0775040B1 (en) 1998-10-21
WO1996005029A1 (en) 1996-02-22
DE4428785C1 (en) 1996-02-22

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