EP0935517A1 - A knife holder for a wrapper cutter with a hand guard - Google Patents

A knife holder for a wrapper cutter with a hand guard

Info

Publication number
EP0935517A1
EP0935517A1 EP98932155A EP98932155A EP0935517A1 EP 0935517 A1 EP0935517 A1 EP 0935517A1 EP 98932155 A EP98932155 A EP 98932155A EP 98932155 A EP98932155 A EP 98932155A EP 0935517 A1 EP0935517 A1 EP 0935517A1
Authority
EP
European Patent Office
Prior art keywords
knife
protective hood
circular knife
circular
protective
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
EP98932155A
Other languages
German (de)
French (fr)
Other versions
EP0935517B1 (en
Inventor
Willy Bilstein
Ingo Picker
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.)
Wilhelm Bilstein KG Spezialfabrik fuer Rundmesser und Plattenventile
Original Assignee
Wilhelm Bilstein KG Spezialfabrik fuer Rundmesser und Plattenventile
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8044441&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0935517(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wilhelm Bilstein KG Spezialfabrik fuer Rundmesser und Plattenventile filed Critical Wilhelm Bilstein KG Spezialfabrik fuer Rundmesser und Plattenventile
Publication of EP0935517A1 publication Critical patent/EP0935517A1/en
Application granted granted Critical
Publication of EP0935517B1 publication Critical patent/EP0935517B1/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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/22—Safety devices specially adapted for cutting machines
    • 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
    • B26D1/24—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 coacting with another disc cutter
    • B26D1/245—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 coacting with another disc cutter 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • 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
    • Y10T83/606—Interrelated tool actuating means and guard means
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7734—With guard for 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8733—Tool movable to cooperate selectively with one of a plurality of mating tools

Definitions

  • the invention relates to a knife holder for a circular knife rotatably mounted in a knife head for the longest cutting of material webs, in particular material webs made of paper or plastic film, the knife holder being provided with a hand guard.
  • a knife holder for roll cutting machines which has a hand guard which is supplemented on the side facing the counter knife by at least one can segment which can be actuated via a separate piston-cylinder unit which is operated with the piston-cylinder unit is connected in series.
  • the can segment In the position of the circular knife which is raised from the counter knife, the can segment is closed by spring force.
  • both piston-cylinder units are acted upon by the pressure medium, so that the can segment in Swivel the handguard in and release the cutting edge of the circular knife.
  • Such a knife holder proves disadvantageous in that, in addition to the high construction costs for an additional piston-cylinder unit, a larger width of the knife holder is necessary.
  • EP-A-0 562 454 shows a similar arrangement with a two-part protective hood, the part of the protective hood facing the counter knife, designed as a can segment and provided with a slot, being vertically displaceably mounted.
  • the can segment is moved via a separate piston-cylinder unit.
  • the can segment In the raised position of the circular knife, the can segment is held in the closed position by a closing spring and is retracted when lowering over the piston, so that the cutting edge of the circular knife can pass through the slots.
  • a hand guard designed in this way is complex and prone to failure due to the multi-part construction and the necessary complicated adjustment mechanism.
  • EP-A-0 333 001 shows a knife holder with a protective hood as hand protection, which is fixedly attached to the base body of the knife holder and completely covers it in the raised position of the circular knife. When lowering the circular knife against the counter knife, the circular knife moves out of the fixed protective hood.
  • DE-U-90 12 926 also shows a knife holder for reel cutting machines, in which the circular knife is surrounded on the side and on the side facing away from the counter knife by a firm hand guard, and the cutting area of the knife is covered by a movable segment which is likewise covered by a complex drive device is opened and closed.
  • the invention is therefore based on the object of providing a knife holder for circular knives which, with a small overall width, good functional safety for hand protection with the simplest possible construction guaranteed.
  • the object is achieved by a knife holder for a bearing mounted rotatably in a knife head
  • Circular knife for the longitudinal cutting of material webs, with a base body which can be fastened to a cutter bar, on which the cutter head is mounted so that it can be moved back and forth via a cross-member between a rest position and a cutting position, and with a protective hood covering the circular knife over at least part of its circumference is movably mounted relative to the circular knife so that in the cutting position the area of the cutting edge which is in engagement with a lower knife is exposed and in the rest position the cutting edge is at least protruded laterally by the protective hood, and with a return spring between the protective hood and the crossbar is arranged to hold the protective hood in the cutting position of the circular knife in a working position releasing the cutting edge of the circular knife, and that in the rest position of the circular knife the protective hood presses through a stop arranged on the base body into a protective position in which the circular knife esser is covered by the protective hood.
  • the advantage of a knife holder designed according to the invention is that, in the rest position of the knife head, the worker is protected from injuries from the circular knife edge, the rest position of the knife head in the sense of this invention being understood to mean the position in which the circular knife is raised from the associated lower knife . In the rest position of the circular knife, the worker can make adjustments to the knife holder and / or
  • the return spring which acts between the crossmember and the protective hood, can be designed, for example, as a leg torsion compression or tension spring.
  • the protective hood which is designed in one piece in accordance with the invention, enables simple and reliable protection of the worker against injuries from the circular knife edge in comparison with the known prior art.
  • the fact that the only one-piece protective hood has to be moved eliminates the more complex constructions, which require a segment that can be moved in addition to a rigid protective hood to protect against the circular knife and which has to be moved by separate drives.
  • the simple protective function of the protective hood is ensured in that, as soon as the cutter head is lifted off the lower cutter, the protective hood is automatically pressed into the protective position by means of the stop arranged on the base body, so that the circular knife edge is completely covered in the rest position of the cutter head.
  • the stop located on the base body presses the protective hood in the direction of the lower knife.
  • the protective hood is pivotally mounted in the plane of the circular knife.
  • a bearing element acting between the crossmember and the protective hood is provided, around which the protective hood can be pivoted, so that in the working position the protective hood is pivoted through an angle relative to the protective position.
  • the protective hood is slidably mounted to the circular knife.
  • a protective hood slidably mounted to the circular knife is mounted so that the protective hood is trans- is mounted movably in the direction of the lifting and lowering movement of the cutter head.
  • the protective hood can be mounted, for example, by bolts which are connected to the protective hood and which are guided in at least one elongated hole arranged in the crossmember. It is expedient if an elongated hole is arranged on both sides of a circular knife axis, the length of which extends in the direction of the lifting and lowering movement. It is also possible for the bolts to be connected to the crossmember and to be guided in an elongated hole arranged in the protective hood. It is also possible for the cross member to have a groove in which a sliding block connected to the protective hood is guided.
  • At least one guide element acting between the cross member and the movable protective hood is provided.
  • the advantage of a guide element acting between the crossmember and the protective hood is that it is particularly pivotable in the plane of the circular knife
  • Protective hood this is also connected to the crossbar, which results in better storage and guidance of the protective hood.
  • a guide element in particular prevents the protective hood from bending out laterally against the plane of the circular knife.
  • a guide element connected to the protective hood can, for example, engage in an elongated hole or a groove arranged on the crossmember, the elongated hole or the groove expediently having the shape of a circular arc which is swept by the guide element during a pivoting movement of the protective hood.
  • the stop is adjustable.
  • an adjustable stop it is possible to adapt it so that, depending on the application, the optimal protective and / or working position of the protective hood can be adjusted.
  • the protective hood is approximately circular, the outer diameter of the protective hood being larger than the diameter of the circular knife, so that the cutting edge of the circular knife is completely covered in the protective position.
  • an edge which is angled vertically to the circular knife plane and which extends at least over a partial area of the circumference of the protective hood is arranged on the protective hood.
  • the edge which is angled vertically to the plane of the circular knife ensures that on the one hand the circular knife edge is covered at least over a partial area of the circumference and on the other hand one side of the circular knife remains accessible in order to be able to adjust, change and / or adjust the circular knife from this side.
  • no edge is arranged on the side of the protective hood facing the lower knife, so that the protective hood in the working area of the circular knife is covered only by a part of the protective hood running parallel to the knife plane in the rest position.
  • the angled edge extends over the full circumference of the circular knife and has a slot-shaped opening for the circular knife edge in its area assigned to the cutting position.
  • the fact that the angled edge has a slot-shaped opening in its area assigned to the cutting position means that when the protective hood is moved into the working position, the circular knife edge can pass through the slot-shaped opening.
  • the cutting edge is covered by the angled edge with the slit-shaped opening, thereby avoiding injuries to the worker.
  • Fig. 1 is a side view of a knife holder for
  • FIG. 2 shows a partially sectioned front view of the knife holder according to FIG. 1 with a first embodiment for the protective hood, the knife head being in the rest position,
  • Fig. 3 is a partially sectioned front view of the knife holder of FIG. 1 with another
  • Embodiment for the protective hood with the cutter head in the cutting position.
  • FIG. 1 shows a side view of a knife holder 1 for circular knives 2 with a base body 3, which can be fixed to a knife bar (not shown in more detail) by means of gill means and a fastening groove 4.
  • the base body 3 has at least one guide rod 5 which can be displaced in the base body 3 by means of guides via a piston-cylinder unit in the base body.
  • a cutter head 7 is mounted on the guide rod 5 by means of a cross member 6.
  • the cutting edge of the circular knife 2 is essentially covered by a protective hood 9 which is pivotally mounted about a bearing element 10 in the plane of the circular knife 2.
  • the bearing element 10 is arranged in a bore 11 of the protective hood 9 and connected to the cross member 6.
  • the protective hood 9 Due to the bore 12 provided on the protective hood 9 for receiving a bearing element 10, the protective hood is suitable for right and left stop. If the cutter head 7 is in the cutting position, which means that the cutting edge 8 of the circular knife 2 interacts with a lower knife 13, the protective hood 9 is by means of a return spring 17 acting between the protective hood 9 and the cross member 6, which is designed as a tension spring in the Working position deflected, whereby the cutting edge 8 of the circular knife 2 is released and protrudes from the protective hood 9.
  • FIG. 2 shows a partially sectioned front view of the knife holder 1 according to FIG. 1 with a guide rod 5 to which the cross member 6 is connected by means of screws 15, the cutter head 7 being mounted on the cross member 6 and being moved into a rest position "R” .
  • the fully extended illustration shows the protective hood 9 in the protective position "S”, the dashed illustration showing the protective hood in the working position "A”.
  • the protective hood 9 is pressed into its protective position “S” by the stop 14, which is adjustably arranged on the base body 2, when the cutter head 7 is lifted off the lower cutter 13.
  • the edge 19 of the protective hood 9 projects beyond the cutting edge 8 of the circular knife 2, so that injuries to the worker are avoided.
  • Fig. 3 shows the knife holder 1 in the cutting position "P".
  • the coverage of the circular knife edge 8 is in the illustrated embodiment by a vertical to the circular knife water level 8 angled edge 18 is reached, which extends over the entire circumference and which has a slot 16 in the working area.
  • the circular knife 2 can pass through the opening slot 16 which is arranged in the edge 18 which is angled vertically to the plane of the circular knife. It is also possible to move the protective hood with pneumatic, hydraulic or electromagnetic means.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The invention pertains to a knife holder (1) for a wrapper cutter (2) intended for separating material strips lengthwise. The knife guide according to the invention comprises a base body (3) which can be secured to a knife holder bar and on which a knife head is provided which can move back and forth on a crosshead from a position of rest (R) to a cutting position (P). The knife holder also comprises a protection hood (9) which covers the wrapper cutter (2) on at least part of its circumference and is mounted moveable relative to said wrapper cutter (2), so that the cutting edge (8) is bare when in a cutting position (P) and covered, at least laterally, by the protection hood (9) when in a position of rest (R).

Description

Bezeichnung: Messerhal'ter für Kreismesser mit HandschutzName: MEASURING Sustainer 'ter for circular knives with hand protection
Beschreibungdescription
Die Erfindung betrifft einen Messerhalter für ein in einem Messerkopf rotierbar gelagertes Kreismesser zum Längstteilen von Materialbahnen, insbesondere von Materialbahnen aus Papier oder Kunststoffolie, wobei der Messerhalter mit einem Handschutz versehen ist.The invention relates to a knife holder for a circular knife rotatably mounted in a knife head for the longest cutting of material webs, in particular material webs made of paper or plastic film, the knife holder being provided with a hand guard.
Durch das Längstteilen von Materialbahnen mittels Kreismessern, die nach dem Scherenschnittsystem arbeiten, werden aus den ursprünglich breiten Materialbahnen schmale Materialstreifen erzeugt, deren Breite sich jeweils nach dem entspre- chenden Anwendungsfall richtet. Um möglichst schmale Bänder oder Streifen zu erzeugen, ist es notwendig, daß die an einem Messerbalken in entsprechendem Abstand nebeneinander festzulegenden Kreismesserhalter eine möglichst geringe Baubreite aufweisen, da durch diese die minimal mögliche Schnittbreite im wesentlichen bestimmt wird. Aus Gründen der Arbeitssicherheit ist es insbesondere wichtig, den Werker bei Einstellarbeiten vor Verletzungen durch das Kreismesser zu schützen, wobei es bekannt ist, das Kreismesser mit einer, ggf. verstellbaren, Abdeckung zu versehen. Je nach Ausführung der Ab- deckung ergibt sich das Problem, daß die Baubreite des Messerhalters vergrößert wird, wodurch die minimal mögliche Schnittbreite sinkt.By longitudinally dividing material webs by means of circular knives, which work according to the scissor-cut system, narrow material strips are produced from the originally wide material webs, the width of which depends on the respective application. In order to produce strips or strips that are as narrow as possible, it is necessary that the circular knife holders to be fixed next to one another at a corresponding distance from one another have the smallest possible width, since this essentially determines the minimum possible cutting width. For reasons of occupational safety, it is particularly important to protect the worker from injury from the circular knife during adjustment work, it being known to provide the circular knife with a cover that can be adjusted, if necessary. Depending on the design of the cover, the problem arises that the overall width of the knife holder is increased, which reduces the minimum possible cutting width.
Aus der DE-PS 37 12 078 ist ein Messerhalter für Rollen- schneidmaschinen bekannt, der einen Handschutz aufweist, der auf der dem Gegenmesser zugewandten Seite durch wenigstens ein Dosensegment ergänzt wird, das über eine gesonderte Kolben-Zylinder-Einheit betätigbar ist, die mit der Kolben- Zylinder-Einheit in Reihe geschaltet ist. In der vom Gegen- messer abgehobenen Stellung des Kreismessers ist das Dosensegment über Federkraft geschlossen. Während der Absenkbewegung des Kreismessers werden beide Kolben-Zylinder-Einheiten mit dem Druckmittel beaufschlagt, so daß das Dosensegment in den Handschutz hineinschwe kt und die Schneide des Kreismessers freigibt. Nachteilig erweist sich ein derartiger Messerhalter dahingehend, daß neben dem hohen Bauaufwand für eine zusätzliche Kolben-Zylinder-Einheit eine größere Baubreite des Messerhalters notwendig ist.From DE-PS 37 12 078 a knife holder for roll cutting machines is known which has a hand guard which is supplemented on the side facing the counter knife by at least one can segment which can be actuated via a separate piston-cylinder unit which is operated with the piston-cylinder unit is connected in series. In the position of the circular knife which is raised from the counter knife, the can segment is closed by spring force. During the lowering movement of the circular knife, both piston-cylinder units are acted upon by the pressure medium, so that the can segment in Swivel the handguard in and release the cutting edge of the circular knife. Such a knife holder proves disadvantageous in that, in addition to the high construction costs for an additional piston-cylinder unit, a larger width of the knife holder is necessary.
Die EP-A-0 562 454 zeigt eine ähnliche Anordnung mit zweiteiliger Schutzhaube, wobei der dem Gegenmesser zugewandte, als Dosensegment ausgebildete und mit einem Schlitz versehene Teil der Schutzhaube vertikal verschiebbar gelagert ist. Auch hierbei wird das Dosensegment über eine gesonderte Kolben- Zylinder-Einheit bewegt. In der abgehobenen Position des Kreismessers wird das Dosensegment durch eine Schließfeder in Schließstellung gehalten und beim Absenken über den Kolben zurückgezogen, so daß die Schneide des Kreismessers durch die Schlitze hindurchtreten kann. Ein derartig ausgebildeter Handschutz ist aufgrund des mehrteiligen Aufbaus und des notwendigen komplizierten Verstellmechanismus aufwendig und störanfällig.EP-A-0 562 454 shows a similar arrangement with a two-part protective hood, the part of the protective hood facing the counter knife, designed as a can segment and provided with a slot, being vertically displaceably mounted. Here, too, the can segment is moved via a separate piston-cylinder unit. In the raised position of the circular knife, the can segment is held in the closed position by a closing spring and is retracted when lowering over the piston, so that the cutting edge of the circular knife can pass through the slots. A hand guard designed in this way is complex and prone to failure due to the multi-part construction and the necessary complicated adjustment mechanism.
Die EP-A-0 333 001 zeigt einen Messerhalter mit einer Schutzhaube als Handschutz, die feststehend am Grundkörper des Messerhalters befestigt ist und in der abgehobenen Position des Kreismessers dieses vollständig überdeckt. Beim Absenken des Kreismessers gegen das Gegenmesser fährt das Kreismesser aus der feststehenden Schutzhaube aus .EP-A-0 333 001 shows a knife holder with a protective hood as hand protection, which is fixedly attached to the base body of the knife holder and completely covers it in the raised position of the circular knife. When lowering the circular knife against the counter knife, the circular knife moves out of the fixed protective hood.
Auch die DE-U-90 12 926 zeigt einen Messerhalter für Rollenschneidmaschinen, bei dem das Kreismesser seitlich und auf der dem Gegenmesser abgewandten Seite von einem festen Handschutz umgeben ist, und der Schneidbereich des Messers durch ein bewegbar ausgebildetes Segment abgedeckt ist, das ebenfalls durch eine aufwendige Antriebsvorrichtung geöffnet und geschlossen wird.DE-U-90 12 926 also shows a knife holder for reel cutting machines, in which the circular knife is surrounded on the side and on the side facing away from the counter knife by a firm hand guard, and the cutting area of the knife is covered by a movable segment which is likewise covered by a complex drive device is opened and closed.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Messerhalter für Kreismesser zu schaffen, der bei geringer Baubrei- te eine gute Funktionssicherheit für den Handschutz bei einem möglichst einfachen Aufbau gewährleistet.The invention is therefore based on the object of providing a knife holder for circular knives which, with a small overall width, good functional safety for hand protection with the simplest possible construction guaranteed.
Die Aufgabe wird erfindungsgemäß gelöst durch einen Messer- halter für ein in einem Messerkopf rotierbar gelagertesAccording to the invention, the object is achieved by a knife holder for a bearing mounted rotatably in a knife head
Kreismesser zum Längstteilen von Materialbahnen, mit einem, an einem Messerbalken befestigbaren Grundkörper, an dem der Messerkopf über eine Traverse zwischen einer Ruheposition und einer Schneidposition hin- und herbewegbar gelagert ist, und mit einer das Kreismesser über wenigstens einen Teil seines Umfangs überdeckenden Schutzhaube, die relativ zum Kreismesser bewegbar so gelagert ist, daß in der Schneidposition der mit einem Untermesser im Eingriff stehende Bereich der Schneide freiliegt und in der Ruheposition die Schneide von der Schutzhaube zumindest seitlich überragt wird, und mit einer Rückstellfeder, die zwischen der Schutzhaube und der Traverse so wirkend angeordnet ist, daß sie die Schutzhaube in der Schneidposition des Kreismessers in einer die Schneide des Kreismessers freigebenden Arbeitsposition hält, und daß in der Ruheposition des Kreismessers die Schutzhaube durch einen am Grundkörper angeordneten Anschlag in eine Schutzposition drückt, in der das Kreismesser durch die Schutzhaube überdeckt wird. Der Vorteil eines erfindungsgemäß ausgestalteten Messerhalters liegt darin, daß in der Ruheposition des Messerkopfes der Werker vor Verletzungen durch die Kreismesserschneide geschützt ist, wobei unter der Ruheposition des Messerkopfes im Sinne dieser Erfindung die Position verstanden wird, in der das Kreismesser von dem zugeordneten Untermesser abgehoben ist. In der Ruheposition des Kreismessers kann der Werker Einstellarbeiten am Messerhalter und/oder amCircular knife for the longitudinal cutting of material webs, with a base body which can be fastened to a cutter bar, on which the cutter head is mounted so that it can be moved back and forth via a cross-member between a rest position and a cutting position, and with a protective hood covering the circular knife over at least part of its circumference is movably mounted relative to the circular knife so that in the cutting position the area of the cutting edge which is in engagement with a lower knife is exposed and in the rest position the cutting edge is at least protruded laterally by the protective hood, and with a return spring between the protective hood and the crossbar is arranged to hold the protective hood in the cutting position of the circular knife in a working position releasing the cutting edge of the circular knife, and that in the rest position of the circular knife the protective hood presses through a stop arranged on the base body into a protective position in which the circular knife esser is covered by the protective hood. The advantage of a knife holder designed according to the invention is that, in the rest position of the knife head, the worker is protected from injuries from the circular knife edge, the rest position of the knife head in the sense of this invention being understood to mean the position in which the circular knife is raised from the associated lower knife . In the rest position of the circular knife, the worker can make adjustments to the knife holder and / or
Kreismesser vornehmen oder eine Materialbahn in den Spalt zwischen abgehobenen Kreismesser und Untermesser einführen. In der Ruheposition wird die Kreismesserschneide durch eine in einer Schutzposition befindliche Schutzhaube überragt, so daß Verletzungen des Werkers am Kreismesser verhindert werden, wobei unter der Schutzposition der Schutzhaube im Sinne der Erfindung die Position verstanden wird, in der die Schutzhaube in Richtung des Untermessers bewegt ist und die Kreismesserschneide vollständig überragt. Die Rückstellfeder, die zwischen der Traverse und der Schutzhaube wirkt, kann beispielsweise als Schenkel-Torsions-Druck- oder Zugfeder ausgebildet sein.Make a circular knife or insert a web of material into the gap between the raised circular knife and the lower knife. In the rest position, the circular knife edge is surmounted by a protective hood located in a protective position, so that injuries to the worker on the circular knife are prevented, the protective position of the protective hood in the sense of the invention being understood to mean the position in which the protective hood is moved in the direction of the lower knife and the Circular knife edge completely towered over. The return spring, which acts between the crossmember and the protective hood, can be designed, for example, as a leg torsion compression or tension spring.
Die erfindungsgemäß einteilig ausgestaltete Schutzhaube ermöglicht im Vergleich zum bekannten Stand der Technik einen einfachen und zuverlässigen Schutz des Werkers vor Verletzungen durch die Kreismesserschneide. Dadurch, daß die nur ein- teilige Schutzhaube bewegt werden muß, entfallen die aufwendigeren Konstruktionen, die zum Schutz vor dem Kreismesser ein zusätzlich zu einer starren Schutzhaube bewegliches Segment benötigen, das über gesonderte Antriebe bewegt werden muß. Die einfache Schutzfunktion der Schutzhaube wird dadurch gewährleistet, daß, sobald der Messerkopf von dem Untermesser abgehoben wird, die Schutzhaube mittels des am Grundkörper angeordneten Anschlages automatisch in die Schutzposition gedrückt wird, so daß in der Ruheposition des Messerkopfes die Kreismesserschneide vollständig überdeckt ist. Der am Grund- körper angeordnete Anschlag drückt die Schutzhaube in Richtung des Untermessers. Wenn der Messerkopf in die Schneidposition ausfährt, wird die Schutzhaube mittels einer Rückstellfeder, die zwischen der Schutzhaube und der Traverse wirkt in eine Arbeitsposition gedrückt und dort gehalten.The protective hood, which is designed in one piece in accordance with the invention, enables simple and reliable protection of the worker against injuries from the circular knife edge in comparison with the known prior art. The fact that the only one-piece protective hood has to be moved eliminates the more complex constructions, which require a segment that can be moved in addition to a rigid protective hood to protect against the circular knife and which has to be moved by separate drives. The simple protective function of the protective hood is ensured in that, as soon as the cutter head is lifted off the lower cutter, the protective hood is automatically pressed into the protective position by means of the stop arranged on the base body, so that the circular knife edge is completely covered in the rest position of the cutter head. The stop located on the base body presses the protective hood in the direction of the lower knife. When the cutter head extends into the cutting position, the protective hood is pressed into a working position by means of a return spring, which acts between the protective hood and the crossbar, and is held there.
In vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß die Schutzhaube in der Ebene des Kreismessers schwenkbar gelagert ist. Um die Schutzhaube in der Ebene des Kreismessers schwenkbar zu lagern ist ein zwischen Traverse und Schutzhaube wirkendes Lagerungselement vorgesehen, um welches die Schutzhaube schwenkbar ist, so daß in der Arbeitsposition die Schutzhaube um einen Winkel gegenüber der Schutzposition verschwenkt ist.In an advantageous embodiment of the invention it is provided that the protective hood is pivotally mounted in the plane of the circular knife. In order to pivotally mount the protective hood in the plane of the circular knife, a bearing element acting between the crossmember and the protective hood is provided, around which the protective hood can be pivoted, so that in the working position the protective hood is pivoted through an angle relative to the protective position.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß die Schutzhaube verschiebbar zu dem Kreismesser gelagert ist. Eine zu dem Kreismesser verschiebbar gelagert Schutzhaube wird so gelagert, daß die Schutzhaube trans- latorisch in Richtung der Anheb- und Absenkbewegung des Messerkopfes bewegbar gelagert ist. Die Lagerung der Schutzhaube kann beispielsweise durch Bolzen erfolgen, die mit der Schutzhaube verbunden sind und die in wenigstens einem in der Traverse angeordneten Langloch geführt werden. Zweckmäßig ist es, wenn auf beiden Seiten einer Kreismesserachse jeweils ein Langloch angeordnet ist, das sich in seiner Länge in Richtung der Anheb- und Absenkbewegung erstreckt. Es ist weiterhin möglich, daß die Bolzen mit der Traverse verbunden sind und in einem in der Schutzhaube angeordneten Langloch geführt werden. Es ist weiterhin möglich, daß die Traverse eine Nut aufweist, in der ein mit der Schutzhaube verbundener Nutstein geführt wird.In a further advantageous embodiment of the invention it is provided that the protective hood is slidably mounted to the circular knife. A protective hood slidably mounted to the circular knife is mounted so that the protective hood is trans- is mounted movably in the direction of the lifting and lowering movement of the cutter head. The protective hood can be mounted, for example, by bolts which are connected to the protective hood and which are guided in at least one elongated hole arranged in the crossmember. It is expedient if an elongated hole is arranged on both sides of a circular knife axis, the length of which extends in the direction of the lifting and lowering movement. It is also possible for the bolts to be connected to the crossmember and to be guided in an elongated hole arranged in the protective hood. It is also possible for the cross member to have a groove in which a sliding block connected to the protective hood is guided.
In besonders vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß wenigstens ein zwischen der Traverse und der bewegbaren Schutzhaube wirkendes Führungselement vorgesehen ist. Der Vorteil eines zwischen der Traverse und der Schutzhaube wirkenden Führungselements liegt darin, daß insbesonde- re in der Ebene des Kreismessers schwenkbar gelagertenIn a particularly advantageous embodiment of the invention it is provided that at least one guide element acting between the cross member and the movable protective hood is provided. The advantage of a guide element acting between the crossmember and the protective hood is that it is particularly pivotable in the plane of the circular knife
Schutzhaube diese zusätzlich mit der Traverse verbunden ist, wodurch sich eine bessere Lagerung und Führung der Schutzhaube ergibt. Ein Führungselement verhindert insbesondere ein seitliches Ausbiegen der Schutzhaube entgegen der Ebene des Kreismesser. Ein mit der Schutzhaube verbundenes Führungselement kann beispielsweise in ein auf der Traverse angeordnetes Langloch oder eine Nut eingreifen, wobei das Langloch oder die Nut zweckmäßigerweise die Form eines Kreisbogens aufweist, der von dem Führungselement während einer Schwenkbewe- gung der Schutzhaube überstrichen wird.Protective hood this is also connected to the crossbar, which results in better storage and guidance of the protective hood. A guide element in particular prevents the protective hood from bending out laterally against the plane of the circular knife. A guide element connected to the protective hood can, for example, engage in an elongated hole or a groove arranged on the crossmember, the elongated hole or the groove expediently having the shape of a circular arc which is swept by the guide element during a pivoting movement of the protective hood.
In zweckmäßiger Ausgestaltung der Erfindung ist vorgesehen, daß der Anschlag verstellbar ist. Durch einen verstellbar ausgebildeten Anschlag ist es möglich diesen so anzupassen, daß je nach Anwendungsfall die optimale Schutz- und/oder Arbeitsposition der Schutzhaube einstellbar ist. In vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß die Schutzhaube annähernd kreisförmig ausgebildet ist, wobei der Außendurchmesser der Schutzhaube größer ist als der Durchmesser des Kreismessers, so daß in der Schutzposition die Schneide des Kreismessers vollständig überdeckt ist.In an expedient embodiment of the invention it is provided that the stop is adjustable. By means of an adjustable stop, it is possible to adapt it so that, depending on the application, the optimal protective and / or working position of the protective hood can be adjusted. In an advantageous embodiment of the invention it is provided that the protective hood is approximately circular, the outer diameter of the protective hood being larger than the diameter of the circular knife, so that the cutting edge of the circular knife is completely covered in the protective position.
In weiterer vorteilhafter Ausgestaltung der Erfindung ist vorgesehen, daß an der Schutzhaube ein vertikal zur Kreismesserebene abgewinkelter Rand angeordnet ist, der sich wenig- stens über einen Teilbereich des Umfangs der Schutzhaube erstreckt. Durch den vertikal zur Kreismesserebene abgewinkelten Rand wird erreicht, daß einerseits die Kreismesserschneide zumindest über einen Teilbereich des Umfangs abgedeckt ist und andererseits eine Seite des Kreismessers zugänglich bleibt, um von dieser Seite das Kreismesser einstellen, wechseln und/oder justieren zu können. Insbesondere ist vorgesehen, daß auf der dem Untermesser zugewandten Seite der Schutzhaube kein Rand angeordnet ist, so daß die Schutzhaube im Arbeitsbereich des Kreismessers nur von einem parallel zur Messerebene verlaufenden Teil der Schutzhaube in der Ruheposition überdeckt wird.In a further advantageous embodiment of the invention, it is provided that an edge which is angled vertically to the circular knife plane and which extends at least over a partial area of the circumference of the protective hood is arranged on the protective hood. The edge which is angled vertically to the plane of the circular knife ensures that on the one hand the circular knife edge is covered at least over a partial area of the circumference and on the other hand one side of the circular knife remains accessible in order to be able to adjust, change and / or adjust the circular knife from this side. In particular, it is provided that no edge is arranged on the side of the protective hood facing the lower knife, so that the protective hood in the working area of the circular knife is covered only by a part of the protective hood running parallel to the knife plane in the rest position.
In zweckmäßiger Ausgestaltung der Erfindung ist vorgesehen, daß der abgewinkelte Rand sich über den vollen Umfang des Kreismessers erstreckt und in seinem der Schneidposition zugeordneten Bereich eine schlitzförmige Öffnung für die Kreismesserschneide aufweist. Dadurch, daß der abgewinkelte Rand in seinem der Schneidposition zugeordneten Bereich eine schlitzförmige Öffnung aufweist, wird erreicht, daß bei einer Bewegung der Schutzhaube in die Arbeitsposition die Kreismesserschneide durch die schlitzförmige Öffnung durchtreten kann. Wenn sich die Schutzhaube in der Schutzposition befindet, wird die Schneide durch den abgewinkelten Rand mit der schlitzförmigen Öffnung abgedeckt, wodurch Verletzungen des Werkers vermieden werden. Die Erfindung wird im Folgenden anhand der schematischen Zeichnungen eines Ausführungsbeispiels näher erläutert. Es zeigen:In an expedient embodiment of the invention, it is provided that the angled edge extends over the full circumference of the circular knife and has a slot-shaped opening for the circular knife edge in its area assigned to the cutting position. The fact that the angled edge has a slot-shaped opening in its area assigned to the cutting position means that when the protective hood is moved into the working position, the circular knife edge can pass through the slot-shaped opening. When the protective hood is in the protective position, the cutting edge is covered by the angled edge with the slit-shaped opening, thereby avoiding injuries to the worker. The invention is explained in more detail below on the basis of the schematic drawings of an exemplary embodiment. Show it:
Fig. 1 eine seitliche Ansicht eines Messerhalters fürFig. 1 is a side view of a knife holder for
Kreismesser,Circular knife,
Fig. 2 eine teilweise geschnittene Vorderansicht des Messerhalters gemäß Fig. 1 mit einer ersten Ausführungsform für die Schutzhaube, wobei sich der Messerkopf in der Ruheposition befindet,2 shows a partially sectioned front view of the knife holder according to FIG. 1 with a first embodiment for the protective hood, the knife head being in the rest position,
Fig. 3 eine teilweise geschnittene Vorderansicht des Messerhalters gemäß Fig. 1 mit einer weiterenFig. 3 is a partially sectioned front view of the knife holder of FIG. 1 with another
Ausführungsform für die Schutzhaube, wobei sich der Messerkopf in der Schneidposition befindet.Embodiment for the protective hood, with the cutter head in the cutting position.
Fig. 1 zeigt eine seitliche Ansicht eines Messerhalters 1 für Kreismesser 2 mit einem Grundkörper 3, der an einem nicht näher dargestellten Messerbalken mittels Kiemmitteln und einer Befestigungsnut 4 festlegbar ist. Der Grundkörper 3 weist wenigstens eine FührungsStange 5 auf, die in dem Grundkörper 3 mittels Führungen über eine Kolben-Zylinder-Einheit im Grundkörper verschiebbar ist.1 shows a side view of a knife holder 1 for circular knives 2 with a base body 3, which can be fixed to a knife bar (not shown in more detail) by means of gill means and a fastening groove 4. The base body 3 has at least one guide rod 5 which can be displaced in the base body 3 by means of guides via a piston-cylinder unit in the base body.
An der Führungsstange 5 ist mittels einer Traverse 6 ein Messerkopf 7 gelagert. Die Schneide des Kreismessers 2 wird im wesentlichen durch eine Schutzhaube 9 überdeckt, die schwenkbar um ein Lagerungselement 10 in der Ebene des Kreismessers 2 gelagert ist. Das Lagerungselement 10 ist in einer Bohrung 11 der Schutzhaube 9 angeordnet und mit der Traverse 6 verbunden.A cutter head 7 is mounted on the guide rod 5 by means of a cross member 6. The cutting edge of the circular knife 2 is essentially covered by a protective hood 9 which is pivotally mounted about a bearing element 10 in the plane of the circular knife 2. The bearing element 10 is arranged in a bore 11 of the protective hood 9 and connected to the cross member 6.
Durch die an der Schutzhaube 9 vorgesehene Bohrung 12 zur Aufnahme eines Lagerungselements 10 eignet sich die Schutzhaube für Rechts- und Linksanschlag. Wenn der Messerkopf 7 in Schneidposition ist, worunter verstanden wird, daß die Schneide 8 des Kreismessers 2 mit einem Untermesser 13 zusammenwirkt, ist die Schutzhaube 9 mittels einer zwischen der Schutzhaube 9 und der Traverse 6 wirkenden Rückstellfeder 17, die als Zugfeder ausgebildet ist in die Arbeitsposition ausgelenkt, wodurch die Schneide 8 des Kreismessers 2 freigegeben wird und die Schutzhaube 9 überragt.Due to the bore 12 provided on the protective hood 9 for receiving a bearing element 10, the protective hood is suitable for right and left stop. If the cutter head 7 is in the cutting position, which means that the cutting edge 8 of the circular knife 2 interacts with a lower knife 13, the protective hood 9 is by means of a return spring 17 acting between the protective hood 9 and the cross member 6, which is designed as a tension spring in the Working position deflected, whereby the cutting edge 8 of the circular knife 2 is released and protrudes from the protective hood 9.
Abhängig von der Einstellung eines am Grundkörper 3 angeordneten Anschlags 14 wird beim Abheben des Messerkopfes 7 von dem Untermesser 13 in Richtung des Pfeils "X" die Schutzhaube 9 zwangsläufig gegen den Anschlag 14 gedrückt, so daß, annähernd entgegengesetzt proportional zu der Bewegung des Mes- serkopfes 7, die Schutzhaube 9 in Richtung des Pfeils "Y" ausgelenkt wird bis die Kreismesserschneide 8 zumindest durch den Rand der Schutzhaube überdeckt ist, wie dies in Fig. 2 angedeutet ist.Depending on the setting of a stop 14 arranged on the base body 3, when the cutter head 7 is lifted from the lower cutter 13 in the direction of the arrow “X”, the protective hood 9 is inevitably pressed against the stop 14, so that, approximately in opposite proportion to the movement of the serkopfes 7, the protective hood 9 is deflected in the direction of arrow "Y" until the circular knife edge 8 is at least covered by the edge of the protective hood, as indicated in Fig. 2.
Fig. 2 zeigt eine teilweise geschnittene Vorderansicht des Messerhalters 1 gemäß Fig. 1 mit einer Führungsstange 5, an der die Traverse 6 mittels Schrauben 15 verbunden ist, wobei an der Traverse 6 der Messerkopf 7 gelagert ist und in eine Ruheposition "R" gefahren ist. Die voll ausgezogene Darstel- lung zeigt die Schutzhaube 9 in der Schutzposition "S", wobei die gestrichelt gezeichnete Darstellung die Schutzhaube in der Arbeitsposition "A" zeigt.FIG. 2 shows a partially sectioned front view of the knife holder 1 according to FIG. 1 with a guide rod 5 to which the cross member 6 is connected by means of screws 15, the cutter head 7 being mounted on the cross member 6 and being moved into a rest position "R" . The fully extended illustration shows the protective hood 9 in the protective position "S", the dashed illustration showing the protective hood in the working position "A".
Die Schutzhaube 9 wird in dieser Position durch den am Grund- körper 2 verstellbar angeordneten Anschlag 14 in ihre Schutzposition "S" gedrückt, wenn der Messerkopf 7 von dem Untermesser 13 abgehoben wird. In der Schutzposition "S" überragt die Kante 19 der Schutzhaube 9 die Schneide 8 des Kreismessers 2, so daß Verletzungen des Werkers vermieden werden.In this position, the protective hood 9 is pressed into its protective position “S” by the stop 14, which is adjustably arranged on the base body 2, when the cutter head 7 is lifted off the lower cutter 13. In the protective position "S", the edge 19 of the protective hood 9 projects beyond the cutting edge 8 of the circular knife 2, so that injuries to the worker are avoided.
Fig. 3 zeigt den Messerhalter 1 in der Schneidposition "P". Die Überdeckung der Kreismesserschneide 8 wird bei der dargestellten Ausführungsform durch einen vertikal zur Kreismes- serebene 8 abgewinkelten Rand 18 erreicht, der sich über den gesamten Umfang erstreckt und der im Arbeitsbereich einen Schlitz 16 aufweist.Fig. 3 shows the knife holder 1 in the cutting position "P". The coverage of the circular knife edge 8 is in the illustrated embodiment by a vertical to the circular knife water level 8 angled edge 18 is reached, which extends over the entire circumference and which has a slot 16 in the working area.
Wenn der Messerkopf 7 in Richtung des Untermessers 13 ausgefahren wird, drückt der Anschlag 14 nicht mehr gegen die Schutzhaube 9, wodurch aufgrund der Federkraft der Rückstellfeder 17 die Schutzhaube 9 in eine Arbeitsposition "A" verschwenkt wird.When the cutter head 7 is extended in the direction of the lower cutter 13, the stop 14 no longer presses against the protective hood 9, as a result of which the protective hood 9 is pivoted into a working position "A" due to the spring force of the return spring 17.
Wenn sich die Schutzhaube 9 in der Arbeitsposition "A" befindet, kann das Kreismesser 2 durch den Öffnungsschlitz 16 hindurchtreten, der in dem vertikal zur Kreismesserebene abgewinkelten Rand 18 angeordnet ist. Weiterhin ist es möglich, die Schutzhaube mit pneumatischen, hydraulischen oder elektromagnetisch wirkenden Mitteln zu bewegen. When the protective hood 9 is in the working position "A", the circular knife 2 can pass through the opening slot 16 which is arranged in the edge 18 which is angled vertically to the plane of the circular knife. It is also possible to move the protective hood with pneumatic, hydraulic or electromagnetic means.

Claims

Ansprüche Expectations
1. Messerhalter (1) für ein in einem Messerkopf (7) rotierbar gelagertes Kreismesser (2) zum Längsteilen von Materialbah- nen, mit einem, an einem Messerbalken befestigbaren Grundkörper (3), an dem der Messerkopf (7) über eine Traverse zwischen einer Ruheposition (R) und einer Schneidposition (P) hin- und herbewegbar gelagert ist, und mit einer das Kreismesser (2) über wenigstens einen Teil seines Umfangs überdek- kenden Schutzhaube (9), die relativ zum Kreismesser (2) bewegbar so gelagert ist, daß in der Schneidposition (P) der mit einem Untermesser (13) im Eingriff stehende Bereich der Schneide (8) freiliegt und in der Ruheposition (R) die Schneide (8) von der Schutzhaube (9) zumindest seitlich über- ragt wird, und mit einer Rückstellfeder (17), die zwischen der Schutzhaube ( 9 ) und der Traverse ( 6 ) so wirkend angeordnet ist, daß sie die Schutzhaube (9) in der Schneidposition (P) des Kreismessers (2) in einer die Schneide (8) des Kreismessers (2) freigebenden Arbeitsposition (A) hält, und daß in der Ruheposition (R) des Kreismessers (2) die Schutzhaube (9) durch einen am Grundkörper (3) angeordneten Anschlag (14) in eine Schutzposition (S) drückt, in der das Kreismesser (2) durch die Schutzhaube (9) überdeckt wird.1. Knife holder (1) for a circular knife (2) rotatably mounted in a knife head (7) for longitudinally dividing material webs, with a base body (3) which can be fastened to a knife bar and on which the knife head (7) is connected by a crossbar a rest position (R) and a cutting position (P) is mounted so that it can move back and forth, and with a protective hood (9) covering the circular knife (2) over at least part of its circumference, which is movably supported relative to the circular knife (2) is that in the cutting position (P) the area of the cutting edge (8) which engages with a lower knife (13) is exposed and in the rest position (R) the cutting edge (8) is at least protruded laterally by the protective hood (9) , and with a return spring (17) which is arranged between the protective hood (9) and the crossmember (6) in such a way that it protects the protective hood (9) in the cutting position (P) of the circular knife (2) in a cutting edge ( 8) of the circular knife (2) releasing working position tion (A) holds, and that in the rest position (R) of the circular knife (2) presses the protective hood (9) through a base (3) arranged stop (14) into a protective position (S) in which the circular knife (2 ) is covered by the protective hood (9).
2. Messerhalter (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Schutzhaube (9) in der Ebene des Kreismessers (2) schwenkbar gelagert ist.2. Knife holder (1) according to claim 1, characterized in that the protective hood (9) in the plane of the circular knife (2) is pivotally mounted.
3. Messerhalter (1) nach Anspruch 1, dadurch gekennzeichnet, daß die Schutzhaube (9) in der Kreismesserebene verschiebbar gegenüber dem Kreismesser (2) gelagert ist.3. Knife holder (1) according to claim 1, characterized in that the protective hood (9) is mounted displaceably in the plane of the circular knife relative to the circular knife (2).
4. Messerhalter (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß wenigstens ein zwischen der Traverse (6) und der bewegbaren Schutzhaube (9) wirkendes Führungselement vorgesehen ist. 4. Knife holder (1) according to one of claims 1 to 3, characterized in that at least one between the cross member (6) and the movable protective hood (9) acting guide element is provided.
5. Messerhalter (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Anschlag (14) einstellbar ist.5. Knife holder (1) according to one of claims 1 to 4, characterized in that the stop (14) is adjustable.
6. Messerhalter (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schutzhaube (9) annähernd kreisförmig ausgebildet ist, wobei der Außendurchmesser der Schutzhaube (9) größer ist als der Durchmesser des Kreismessers (2), so daß in der Schutzposition (S) die Schneide (8) des Kreismessers (2) vollständig überragt ist.6. Knife holder (1) according to one of claims 1 to 5, characterized in that the protective hood (9) is approximately circular, the outer diameter of the protective hood (9) being larger than the diameter of the circular knife (2), so that in the cutting edge (8) of the circular knife (2) is completely towered over the protective position (S).
7. Messerhalter (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß an der Schutzhaube (9) ein vertikal zur Kreismesserebene abgewinkelter Rand (18) angeordnet ist, der sich wenigstens über einen Teilbereich des Umfangs der Schutzhaube (9) erstreckt.7. Knife holder (1) according to one of claims 1 to 6, characterized in that a vertically angled to the circular knife plane edge (18) is arranged on the protective hood (9), which extends at least over a portion of the circumference of the protective hood (9) .
8. Messerhalter (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der abgewinkelte Rand (18) sich über den vollen Umfang des Kreismessers erstreckt und in seinem der Schneidposition zugeordneten Bereich eine schlitzförmige Öffnung (16) für die Kreismesserschneide (8) aufweist. 8. Knife holder (1) according to one of claims 1 to 7, characterized in that the angled edge (18) extends over the full circumference of the circular knife and in its area assigned to the cutting position a slot-shaped opening (16) for the circular knife edge (8th ) having.
EP98932155A 1997-08-11 1998-06-15 A knife holder for a wrapper cutter with a hand guard Expired - Lifetime EP0935517B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29714312U 1997-08-11
DE29714312U DE29714312U1 (en) 1997-08-11 1997-08-11 Knife holder for circular knives with hand protection
PCT/EP1998/003595 WO1999007529A1 (en) 1997-08-11 1998-06-15 A knife holder for a wrapper cutter with a hand guard

Publications (2)

Publication Number Publication Date
EP0935517A1 true EP0935517A1 (en) 1999-08-18
EP0935517B1 EP0935517B1 (en) 2002-08-28

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Family Applications (1)

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EP98932155A Expired - Lifetime EP0935517B1 (en) 1997-08-11 1998-06-15 A knife holder for a wrapper cutter with a hand guard

Country Status (4)

Country Link
US (1) US6155152A (en)
EP (1) EP0935517B1 (en)
DE (3) DE29714312U1 (en)
WO (1) WO1999007529A1 (en)

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DE202008014869U1 (en) 2008-11-08 2009-01-22 Wilhelm Bilstein KG Spezialfabrik für Maschinenmesser und Kompressorventile Locking mechanism for plug connection to circular knife holder
EP2436627A3 (en) * 2010-09-30 2012-06-13 Voith Patent GmbH Coiling method and roll cutting machine

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US6098510A (en) * 1997-09-19 2000-08-08 Kimberly-Clark Worldwide, Inc. Method and apparatus for slitting a sheet material web
US6398981B1 (en) * 1998-09-18 2002-06-04 Universite Laval Photopolymerizable composition sensitive to light in a green to infrared region of the optical spectrum
DE10323753B4 (en) * 2003-05-22 2007-05-03 Dienes Werke für Maschinenteile GmbH & Co KG Longitudinal cutting machine with cooled cutting region
DE102006051359A1 (en) * 2006-10-27 2008-04-30 Khs Ag Label cutter drum for label application machine adjusts blade positions by shifting drum axle position
US20090031851A1 (en) * 2007-08-03 2009-02-05 Omni Technologies, Inc. Slitter Guard
IT1400975B1 (en) * 2010-06-30 2013-07-05 Cavagna Elio Srl TOOL HOLDER FOR CUTTING MACHINES
WO2017189201A1 (en) * 2016-04-29 2017-11-02 Ranpak Corp Cutting mechanism for a dunnage conversion machine and method
JP6927574B2 (en) * 2016-09-21 2021-09-01 デュプロ精工株式会社 Slitters, sheet cutting machines, and sheet processing equipment
DE102017117524A1 (en) * 2017-08-02 2019-02-07 DIENES WERKE FüR MASCHINENTEILE GMBH & CO. KG Knife holder with adjusting slide

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008014869U1 (en) 2008-11-08 2009-01-22 Wilhelm Bilstein KG Spezialfabrik für Maschinenmesser und Kompressorventile Locking mechanism for plug connection to circular knife holder
EP2436627A3 (en) * 2010-09-30 2012-06-13 Voith Patent GmbH Coiling method and roll cutting machine

Also Published As

Publication number Publication date
WO1999007529A1 (en) 1999-02-18
EP0935517B1 (en) 2002-08-28
DE19881239D2 (en) 2000-02-24
DE59805305D1 (en) 2002-10-02
US6155152A (en) 2000-12-05
DE29714312U1 (en) 1998-09-24

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