EP0196580B1 - Apparatus for cutting form webs - Google Patents
Apparatus for cutting form webs Download PDFInfo
- Publication number
- EP0196580B1 EP0196580B1 EP19860103937 EP86103937A EP0196580B1 EP 0196580 B1 EP0196580 B1 EP 0196580B1 EP 19860103937 EP19860103937 EP 19860103937 EP 86103937 A EP86103937 A EP 86103937A EP 0196580 B1 EP0196580 B1 EP 0196580B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- cutting wheel
- wheel
- cutting device
- slide
- 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.)
- Expired - Lifetime
Links
- 238000005520 cutting process Methods 0.000 title claims description 116
- 230000035515 penetration Effects 0.000 description 6
- 230000003993 interaction Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/66—Applications of cutting devices
- B41J11/70—Applications of cutting devices cutting perpendicular to the direction of paper feed
- B41J11/706—Applications of cutting devices cutting perpendicular to the direction of paper feed using a cutting tool mounted on a reciprocating carrier
-
- 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
- B26D1/20—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 a fixed member
- B26D1/205—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 a fixed member for thin material, e.g. for sheets, strips or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/02—Means for moving the cutting member into its operative position for cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
-
- 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
- Y10T83/7755—Carrier for rotatable tool movable during cutting
-
- 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
- Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]
- Y10T83/8778—Ledger blade
Definitions
- the invention relates to a cutting device for a form web which is arranged on a printing carriage of a printer with a cutting wheel fastened to a pivotable lever which can be driven by the movement of the printing head carriage and can be adjusted to a stationary counter knife, the cutting wheel being raised from an ineffective by a control device and retracted position is lowered into a cutting position and advanced position and the cutting wheel is held in the cutting position by a spring in contact with the shear bar.
- a cutting device for form webs is described in DE-GM 78 12 759.
- a control part pushes a cutting wheel from a retracted, ineffective position, in which the pressure is normally applied, into an advanced, lowered position, in which the cutting process is carried out.
- the cutting device is connected to the printing unit and the cutting movement of the cutting wheel is derived from the movement of the printing carriage relative to the printing base.
- the control part is controlled on the one hand by stops fixed to the housing from the ineffective into the effective position, at the same time there are lead-in slopes or the like on the printing pad which ensure that the cutting wheel is brought into the contact position with the shear bar.
- the arrangement of special, fixed stops for actuating the control part and special bevels for making the cutting wheel effective in the cutting position requires considerable effort.
- the cutting device referred to at the outset is known from FR-A-2 389 300.
- the prior art comprises a cutting device, the cutting wheel being brought by a control device from an ineffective, raised and retracted position into a position lowered and advanced into the cutting position, and the cutting wheel is held in the cutting position by a spring in contact with the shear bar.
- a control device In addition to the suspension of the cutting wheel on a pivotable lever, such a solution requires a multi-armed control lever which interacts on the one hand with the pivotable lever and on the other hand with a control rod extending in the direction of movement.
- the known device is relatively complicated and requires considerable space. The space used there is not available in many printers.
- control device for moving the cutting wheel from the ineffective, raised position into the effective cutting position to improve, in particular to simplify.
- the invention has the additional object of holding the form webs in such a way that avoidance of the form webs at the beginning and at the end of the cutting process is avoided.
- control device consists of a slide with at least two cam guides, the first cam guide bringing the cutting wheel from the raised to the lowered position, and the second cam guide bringing the cutting wheel from the retracted to the advanced position and then released by the force of the spring mentioned.
- the slide receives its control movement through interaction with the lateral limits which limit the movement of the pressure carriage.
- the use of the slider with the cam guides as a control device has the advantage that the cutting wheel can be moved easily and that this the latter is held against the shear bar only under the low force of a relatively weak spring.
- the slightly resilient abutment of the cutting wheel compensates for any tolerances in the slide guide and reduces wear on the cutting wheel.
- a second cam guide which gives the cutting wheel its movement from the retracted into the advanced position, while the cutting wheel is raised and lowered via a first cam guide, the movements of the cutting wheel being superimposed by the first and second cam guides, that the cutting wheel is guided around the sharp shearbar on the printing pad as it moves.
- the control device acts independently of the cutting wheel on holding rollers which are arranged on both sides of the cutting wheel.
- the holding rollers are preferably arranged on a scale lever which adjusts itself automatically in the holding position.
- FIG. 1 reveals two guide axes 3 and 4 for a printing carriage 5 are arranged between two lateral boundary plates 1 and 2.
- the print head 6 which stands with its mouthpiece 7 directly in front of the printing pad 8 and prints on the form web 9.
- the cutting device 10 is attached to the printing carriage 5 so that the cutting wheel 11 with a cutting edge 20 - see also FIG. 6 - can cooperate on the printing pad 8.
- the ink ribbon cassette which consists of two parts, 13a and 13b, between which the ink ribbon 14 is stretched in front of the printing pad 8 is also fixed between the lateral boundary boards 1 and 2.
- the ribbon 14 is guided to guide it on the one hand around the guide bolts 15 and 16, on the other hand, it lies in front of the mouthpiece 7, i. H. in front of the openings through which the printing needles of the printing unit 6 emerge.
- FIG. 2 the cutting device in the position in which the cutting wheel 11 is in its inactive position, in which the print head 6, 7 thus acts on the form webs 9, which are fed on the printing pad 8.
- a shear bar 20 is attached to the front of the printing pad 8, which cooperates with the cutting wheel 11 and causes the form web 9 to be sheared off with appropriate control.
- FIG. 3 shows the cutting device 10 in the active position, ie in the position in which the cutting wheel 11 interacts with the counter cutting edge 20 in order to cause individual sections of the form web 9 to be sheared off.
- a support member 21 supports the entire parts of the cutting device 10. As FIG. 5 shows, the support member 21 is a bow-shaped, angled part, which has angled tabs 22, 23, 24 and 45 at the front and rear. Laterally, the support member 21 is provided with bends 25 and 26, which have the task of storing and guiding the various active parts of the cutting device.
- the control device comprises a slide 28 which is held and guided with its two ends in the angled tabs 25, 26 of the supporting part 21.
- the slide 28 has two stop beads 29 and 30 which limit its displacement movement. With its two ends 31 and 32, the slider 28 abuts the lateral boundary splatinen 1 and 2 of the movement of the printing carriage 5, whereby the cutting wheel 11 is adjusted into the effective or ineffective position.
- the slider 28 has a penetration 33, a curve guide 34, a penetration 35 and a third curve guide 36.
- the penetration 33 and the curve guide 34 serve to control the cutting wheel 11, the curve guide 36 to control the cold roller set 37.
- the cutting wheel 11 is by means of a Bolt 38 rotatably mounted on a lever 39.
- the lever 39 is connected to an axis 40 which is rotatably and axially displaceably mounted in the angled tabs 22 and 24 of the holding part 21.
- a spring 41 acts on the axis 40, on the lever 39 and thus on the cutting wheel 11 in such a way that the cutting wheel 11 rests elastically on the shearbar 20 in the active position, as is shown, for example, in FIG. 6 shows.
- the slider 28 is provided with a bend 42 in the area of the penetration 33, a curve follower 43 being arranged on the axis 40, as can be seen in particular from FIG. 4 results.
- the parts 33, 42, 43 together form the second curve guide, which serves to move the cutting wheel 11 back and forth.
- the axis 40 follows the cam follower 43 and the bend 42 in the slide 28 of this movement, so that the cutting wheel 11 is moved from a retracted, ineffective position to an advanced, effective position. It should be noted here that, as shown in FIG.
- the first cam guide 34 is also provided, in which the bolt 38 engages on the cutting wheel 11.
- the shape of the curve guide 34 according to FIG. 5 shows that the cutting wheel 11 is also raised and lowered by the slider 28.
- the curve guide 33 with the bend 42 therefore has the function of moving the cutting wheel 11 back and forth while the curve guide 34 has the function of raising and lowering the cutting wheel 11. In the advanced, lowered position, the cutting wheel 11 is effective, in the retracted, raised position, the cutting wheel 11 is ineffective.
- the control device consisting of the slide 28, not only controls the lifting and lowering and moving back and forth of the cutting wheel 11 into and out of the cutting position, but also controls a holding device 37, which has the function of the form webs 9 in front and to keep behind the cutting wheel 11 and which is controlled independently of the cutting wheel 11.
- the slide 28 is provided with a further penetration 35 and a curve guide 36.
- a control lever 44 is mounted between the angled tab 23 and a further angled tab 45 of the holding part 21 on an axis 46.
- a spring 47 influences the control lever 44 in FIG. 5 counterclockwise. It should be noted that the penetration 35 in the slide 28 is only penetrated by the shaft 46, but no control function is exerted on the lever 44.
- the control function is performed by the cam guide 36, which ensures that the control lever 44 moves a balance lever 48 from an inactive position, for example according to FIG. 2, in an effective position according to FIG. 3 can pivot.
- the balance lever 48 is pivotally mounted on a pin 49 on the control lever 44 and carries two front and rear holding rollers 50, 51, 52 and 53. It should be noted that the axis 38 of the cutting wheel 11 is coaxial with the bearing pin 49 of the balance lever 48. As a result, the two holding rollers 50, 51 on the one hand the cutting position, the two holding rollers 52 and 53 on the other hand the cutting position of the cutting roller 11 are arranged.
- the inner rollers 51, 52 are provided with a more elastic support than the outer rollers 50, 53.
- FIG. 6 in a sectional view. It can be seen that the cutting wheel 11 only bears against the cutting edge of the shear bar 20 under the very slight pull of the spring 41.
- FIG. 7 shows in an enlarged view the movement of the cutting wheel 11 from the raised, retracted position according to FIG. 2 in the effective, lowered position.
- the dashed line shows that the cutting wheel 11 is advanced and lowered by the two cam guides 33 and 34.
- No additional bevels or switching pins on the printer itself are required to carry out the movement. Rather, the switching takes place only by the interaction of the two ends 31 and 32 of the slide 28 with the two lateral limiting boards 1 and 2. If it is not to be cut, only the control of the printer carriage 5 must take place in such a way that the movement reversal before reaching the limiting boards 1 and 2 is done.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Handling Of Sheets (AREA)
Description
Die Erfindung bezieht sich auf eine Schneideinrichtung für eine Formularbahn die auf einem Druckkonfwagen eines Druckers angeordnet ist mit einem an einem schwenkbaren Hebel befestigten Schneidrad das durch die Bewegung des Druckkopfwagens antriebbar und an eine ortsteste Gegenschneide anstellbar ist wobei das Schneidrad durch eine Steuereinrichtung aus einer unwirksamen angehobenen und zurückgezogenen Stellung in eine in Schneidlage abgesenkt und vorgeschobene Stellung gebracht wird und das Schneidrad in der Schneidstellung durch eine Feder in Anlage an der Gegenschneide gehalten wird.The invention relates to a cutting device for a form web which is arranged on a printing carriage of a printer with a cutting wheel fastened to a pivotable lever which can be driven by the movement of the printing head carriage and can be adjusted to a stationary counter knife, the cutting wheel being raised from an ineffective by a control device and retracted position is lowered into a cutting position and advanced position and the cutting wheel is held in the cutting position by a spring in contact with the shear bar.
Beispielsweise in dem DE-GM 78 12 759 ist eine Schneidvorrichtung für Formularbahnen beschrieben. Durch ein Steuerteil wird ein Schneidrad aus einer zurückgezogenen, unwirksamen Stellung, in der normalerweise der Druck erfolgt, in eine vorgeschobene, abgesenkte Stellung geschoben, in der der Schneidvorgang durchgeführt wird. Die Schneidvorrichtung ist mit der Druckeinheit verbunden und die Schneidbewegung des Schneidrades wird aus der Bewegung des Druckkontschlittens relativ zur Druckunterlage abgeleitet. Bei der bekannten Anordnung wird das Steuerteil einerseits durch gehäusefeste Anschläge aus der unwirksamen in die wirksame Stellung gesteuert, gleichzeitig sind an der Druckunterlage noch Anschlaufschrägen oder dergl. vorhanden, durch die sichergestellt wird, daß das Schneidrad in die Anlageposition zu der Gegenschneide gebracht wird. Die Anordnung besonderer, gehäusefester Anschläge für das Betätigen des Steuerteiles und besonderer Anlaufschrägen für das Wirksammachen des Schneidrades in der Schneidstellung erfordert einen erheblichen Aufwand.For example, a cutting device for form webs is described in DE-GM 78 12 759. A control part pushes a cutting wheel from a retracted, ineffective position, in which the pressure is normally applied, into an advanced, lowered position, in which the cutting process is carried out. The cutting device is connected to the printing unit and the cutting movement of the cutting wheel is derived from the movement of the printing carriage relative to the printing base. In the known arrangement, the control part is controlled on the one hand by stops fixed to the housing from the ineffective into the effective position, at the same time there are lead-in slopes or the like on the printing pad which ensure that the cutting wheel is brought into the contact position with the shear bar. The arrangement of special, fixed stops for actuating the control part and special bevels for making the cutting wheel effective in the cutting position requires considerable effort.
Die eingangs bezeichnete Schneideinrichtung ist aus der FR-A-2 389 300 bekannt. Hiernach umfaßt der Stand der Technik eine Schneideinrichtung, wobei das Schneidrad durch eine Steuereinrichtung aus einer unwirksamen, angehobenen und zurückgezogenen Stellung in eine in Schneidlage gesenkte und vorgeschobene Stellung gebracht wird und das Schneidrad in der Schneidstellung durch eine Feder in Anlage an der Gegenschneide gehalten wird. Eine solche Lösung erfordert neben der Aufhängung des Schneidrades an einem schwenkbaren Hebel einen mehrarmigen Steuerhebel, der einerseits mit dem schwenkbaren Hebel und andererseits mit einer in Bewegungsrichtung verlaufenden Steuerstange zusammenwirkt. Nachteilig ist hier aber auch, daß die bekannte Einrichtung relativ kompliziert ist und erheblichen Platzbedarf erfordert. Der dort beanspruchte Platz steht in vielen Druckern nicht zur Verfügung.The cutting device referred to at the outset is known from FR-A-2 389 300. According to this, the prior art comprises a cutting device, the cutting wheel being brought by a control device from an ineffective, raised and retracted position into a position lowered and advanced into the cutting position, and the cutting wheel is held in the cutting position by a spring in contact with the shear bar. In addition to the suspension of the cutting wheel on a pivotable lever, such a solution requires a multi-armed control lever which interacts on the one hand with the pivotable lever and on the other hand with a control rod extending in the direction of movement. However, it is also disadvantageous here that the known device is relatively complicated and requires considerable space. The space used there is not available in many printers.
Demgegenüber ist es eine Aufgabe der Erfindung, die Steuereinrichtung für das Verbringen des Schneidrades aus der unwirksamen, angehobenen Stellung in die wirksame Schneidstellung zu verbessern, insbesondere zu vereinfachen. Gleichzeitig ist es Aufgabe der Erfindung, den Platzbedarf für die Umschaltung des Schneidrades zu verringern, um dadurch die Druckbreite zu verbessern.In contrast, it is an object of the invention, the control device for moving the cutting wheel from the ineffective, raised position into the effective cutting position to improve, in particular to simplify. At the same time, it is an object of the invention to reduce the space required for switching the cutting wheel in order to improve the printing width.
Eine weitere Aufgabenstellung ergibt sich daraus, daß bei der bekannten Anordnung die Haltevorrichtung für die zu schneidenden Formularbahnen mit dem Schneidrad direkt verbunden ist. Das führt dazu, daß ein nur punktförmiges Festhalten des Formulares während des Schneidvorganges dort erfolgt, wo geschnitten wird, jedoch nicht während des Anschneidens. Dadurch kann nicht ausgeschlossen werden, daß die Formularbahnen sich am Beginn und am Ende des Schneidvorganges leicht verschieben, so daß keine geraden Schnittkanten entstehen.Another task results from the fact that in the known arrangement the holding device for the form webs to be cut is directly connected to the cutting wheel. This leads to the fact that the form is only held in a punctiform manner during the cutting process where the cutting takes place, but not during the cutting. This cannot rule out that the form webs shift slightly at the beginning and at the end of the cutting process, so that there are no straight cutting edges.
Demgegenüber stellt sich die Erfindung die zusätzliche Aufgabe, die Formularbahnen so zu halten, daß ein Ausweichen der Formularbahnen am Beginn und am Ende des Schneidvorganges vermieden wird.In contrast, the invention has the additional object of holding the form webs in such a way that avoidance of the form webs at the beginning and at the end of the cutting process is avoided.
Die Erfindung ist dadurch gekennzeichnet, daß die Steuereinrichtung aus einem Schieber mit zumindest zwie Kurvenführungen besteht, wobei die erste Kurven führung das Schneidrad aus der angehobenen in die abgesenkte Stellung bringt, und die zweite Kurvenführung das Schneidrad aus der zurückgezogenen in die vorgeschobene Stellung bringt und anschließend durch die Kraft der genannten Feder freigibt. Der Schieber erhält seine Steuerbewegung durch Zusammenwirken mit den die Bewegung des Druckschlittens begrenzenden, seitlichen Begrenzungen.The invention is characterized in that the control device consists of a slide with at least two cam guides, the first cam guide bringing the cutting wheel from the raised to the lowered position, and the second cam guide bringing the cutting wheel from the retracted to the advanced position and then released by the force of the spring mentioned. The slide receives its control movement through interaction with the lateral limits which limit the movement of the pressure carriage.
Die Verwendung des Schiebers mit den Kurvenführungen als Steuervorrichtung hat den Vorteil, daß ein leichtgängiges Verschieben des Schneidrades möglich ist und daß dieses letztere nur unter der geringen Kraft einer relativ schwachen Feder in Anlage an der Gegenschneide gehalten wird. Durch das leicht federnde Anliegen des Schneidrades werden etwaige Toleranzen in der Schlittenführung ausgeglichen und der Verschleiß des Schneidrades verringert.The use of the slider with the cam guides as a control device has the advantage that the cutting wheel can be moved easily and that this the latter is held against the shear bar only under the low force of a relatively weak spring. The slightly resilient abutment of the cutting wheel compensates for any tolerances in the slide guide and reduces wear on the cutting wheel.
Gemäß der Erfindung ist eine zweite Kurvenführung vorgesehen, die dem Schneidrad seine Bewegung aus der zurückgezogenen in die vorgeschobene Stellung erteilt, während über eine erste Kurvenführung das Schneidrad gehoben und gesenkt wird, wobei die Bewegungen des Schneidrades sich durch die erste und zweite Kurvenführung so überlagern, daß das Schneidrad bei seiner Bewegung um die scharfe Gegenschneide an der Druckunterlage herumgeführt wird. Für das Halten der Formularbahnen wirkt die Steuereinrichtung unabhängig von dem Schneidrad auf Halterollen ein, die beidseits des Schneidrades angeordnet sind. Die Halterollen sind vorzugsweise auf einem Waagehebel angeordnet, der sich selbsttätig in Halteposition einstellt.According to the invention, a second cam guide is provided which gives the cutting wheel its movement from the retracted into the advanced position, while the cutting wheel is raised and lowered via a first cam guide, the movements of the cutting wheel being superimposed by the first and second cam guides, that the cutting wheel is guided around the sharp shearbar on the printing pad as it moves. To hold the form webs, the control device acts independently of the cutting wheel on holding rollers which are arranged on both sides of the cutting wheel. The holding rollers are preferably arranged on a scale lever which adjusts itself automatically in the holding position.
Weitere Einzelheiten der Erfindung ergeben sich anhand einer Beschreibung eines Ausführungsbeispieles der Erfindung, wie es in den beiliegenden Zeichnungen gezeigt ist. In diesen Zeichnungen zeigt
- FIG. 1 eine Übersicht über die erfindungsgemäße Schneideinrichtung,
- FIG. 2 ist eine Frontansicht der Schneideinrichtung in der unwirksamen Stellung,
- FIG. 3 ist eine Frontansicht der Schneideinrichtung in der wirksamen Stellung,
- FIG. 4 ist eine Seitenansicht der Schneideinrichtung,
- FIG. 5 zeigt die Teile der Schneideinrichtung in Explosivdarstellung,
- FIG. 6 zeigt den Schneidvorgang,
- FIG. 7 zeigt die Bewegung des Schneidrades in die Schneidposition.
- FIG. 1 shows an overview of the cutting device according to the invention,
- FIG. 2 is a front view of the cutter in the inoperative position,
- FIG. 3 is a front view of the cutter in the operative position,
- FIG. 4 is a side view of the cutter,
- FIG. 5 shows the parts of the cutting device in an exploded view,
- FIG. 6 shows the cutting process,
- FIG. 7 shows the movement of the cutting wheel into the cutting position.
Wie FIG. 1 erkennen läßt, sind zwischen zwei seitlichen Begrenzungsplatinen 1 und 2 zwei Führungsachsen 3 und 4 für einen Druckwagen 5 angeordnet. Auf dem Druckwagen 5 befindet sich der Druckkopf 6, der mit seinem Mundstück 7 unmittelbar vor der Druckunterlage 8 steht und auf der Formularbahn 9 druckt. Die Schneidvorrichtung 10 ist am Druckwagen 5 so befestigt, daß das Schneidrad 11 mit einer Schneide 20 - siehe auch FIG. 6 - an der Druckunterlage 8 zusammenwirken kann. Festgelegt zwischen den seitlichen Begrenzungsplatinen 1 und 2 ist noch die Farbbandkassette, die aus zwei Teilen, 13a und 13b, besteht, zwischen denen das Farbband 14 vor der Druckunterlage 8 gespannt ist. Das Farbband 14 wird zu seiner Führung einerseits um die Führungsbolzen 15 und 16 herumgeführt, andererseits liegt es vor dem Mundstück 7, d. h. vor den Öffnungen, durch die die Drucknadeln des Druckwerkes 6 austreten.As FIG. 1 reveals two
Die Einzelheiten der Schneideinrichtung 10 sollen nun unter besonderer Bezugnahme auf die FIG. 2, 3, 4 und 5 im einzelnen beschrieben werden. Dabei zeigt die FIG. 2 die Schneideinrichtung in der Stellung, in der das Schneidrad 11 in seiner unwirksamen Stellung ist, in der also der Druckkopf 6, 7 auf die Formularbahnen 9 einwirkt, die auf der Druckunterlage 8 zugeführt werden. Wie man insbesondere aus FIG. 6 erkennen kann, ist an der Vorderseite der Druckunterlage 8 eine Gegenschneide 20 angebracht, die mit dem Schneidrad 11 zusammenwirkt und das Abscheren der Formularbahn 9 bei entsprechender Ansteuerung bewirkt. FIG. 3 zeigt andererseits die Schneideinrichtung 10 in der wirksamen Stellung, d.h. in der Stellung, in der das Schneidrad 11 mit der Gegenschneide 20 zusammenwirkt, um das Abscheren einzelner Abschnitte der Formularbahn 9 zu bewirken. Ein Tragteil 21 trägt die gesamten Teile der Schneideinrichtung 10. Wie FIG. 5 erkennen läßt, ist das Tragteil 21 ein bügelförmiges, abgewinkeltes Teil, welches vorne und hinten abgewinkelte Lappen 22, 23, 24 und 45 besitzt. Auch seitlich ist das Tragteil 21 mit Abwinklungen 25 und 26 versehen, die die Aufgabe haben, die verschiedenen aktiven Teile der Schneideinrichtung zu lagern und zu führen.The details of the
Die erfindungsgemäße Steuereinrichtung umfaßt einen Schieber 28 der mit seinen beiden Enden in den abgewinkelten Lappen 25, 26 des Tragteils 21 gehalten und geführt ist. Der Schieber 28 hat zwei Anschlagwülste 29 und 30, die seine Verschiebebewegung begrenzen. Mit seinen beiden Enden 31 und 32 stößt der Schieber 28 an die seitlichen Begrenzung splatinen 1 und 2 der Bewegung des Druckwagens 5, wodurch das Schneidrad 11 in die wirksame bzw. unwirksame Stellung verstellt wird.The control device according to the invention comprises a
Der Schieber 28 hat eine Durchdringung 33, eine Kurvenführung 34, eine Durchdringung 35 und eine dritte Kurvenführung 36. Die Durchdringung 33 und die Kurvenführung 34 dienen der Steuerung des Schneidrades 11, die Kurvenführung 36 der Steuerung des Kalterollensatzes 37. Das Schneidrad 11 ist mittels eines Bolzens 38 auf einem Hebel 39 drehbar gelagert. Der Hebel 39 ist mit einer Achse 40 verbunden, die in den abgewinkelten Lappen 22 und 24 des Halteteiles 21 drehbar und axial verschiebbar gelagert ist. Eine Feder 41 wirkt so auf die Achse 40, auf den Hebel 39 und damit auf das Schneidrad 11 ein, daß in der wirksamen Stellung das Schneidrad 11 an der Gegenschneide 20 elastisch anliegt, wie dies beispielsweise die FIG. 6 zeigt. Der Schieber 28 ist im Bereich der Durchdringung 33 mit einer Abwinklung 42 versehen, wobei an der Achse 40 ein Kurvenfolger 43 angeordnet ist, wie sich dies insbesondere aus FIG. 4 ergibt. Die Teile 33, 42, 43 zusammen bilden die zweite Kurvenführung, die dem Vor- und Zurückverschieben des Schneidrades 11 dient. Wenn der Schieber 28 beispielsweise in FIG. 4 von links nach rechts verschoben wird, dann folgt die Achse 40 über den Kurvenfolger 43 und die Abwinklung 42 in dem Schieber 28 dieser Bewegung, so daß das Schneidrad 11 aus einer zurückgezogenen, unwirksamen Stellung in eine vorgeschobene, wirksame Stellung verschoben wird. Hier sei vermerkt, daß, wie aus der FIG. 4 ersichtlich, der Kurvenfolger 43 nicht an der Kurvenführung 33 des Schiebers 28 anliegt, sondern federnd durch die Feder 41, die mit dem Hebel 39 verbunden ist, an die Gegenschneide 20 angedrückt wird. Wird dagegen der Schieber 28 in FIG. 4 von rechts nach links verschoben, dann bewirkt die Kurvenführung 33 des Schiebers 28 mit ihrer Abwinklung 42 und dem Kurvenfolger 43 an der Achse 40 ein Zurückziehen des Schneidrades 11, so daß dieses außer Wirklage mit der Gegenschneide 20 geschoben wird. Bei der Feder 41 handelt es sich um eine relativ schwache Feder, wodurch der Verschleiß des Schneidrades 11 gemindert wird und Toleranzen in der Druckunterlage ausgeglichen werden.The
Zusätzlich zu der zweiten Kurvenführung 33, 42, 43 ist noch die erste Kurvenführung 34 vorgesehen, in die der Bolzen 38 an dem Schneidrad 11 eingreift. Die Form der Kurvenführung 34 gemäß FIG. 5 läßt erkennen, daß das Schneidrad 11 durch den Schieber 28 auch gehoben und gesenkt wird. Die Kurvenführung 33 mit der Abwinklung 42 hat also die Funktion, das Schneidrad 11 vor und zurück zu verschieben, während die Kurvenführung 34 die Funktion hat, das Schneidrad 11 zu heben und zu senken. In der vorgeschobenen, abgesenkten Stellung ist das Schneidrad 11 wirksam, in der zurückgezogenen, angehobenen Stellung ist das Schneidrad 11 unwirksam.In addition to the
Die Steuereinrichtung, bestehend aus dem Schieber 28, steuert aber nicht nur das Heben und Senken und Vor- und Zurückverschieben des Schneidrades 11 in die und aus der Schneidstellung, sondern es steuert auch eine Haltevorrichtung 37, die die Funktion hat, die Formularbahnen 9 vor und hinter dem Schneidrad 11 zu halten und die unabhängig von dem Schneidrad 11 angesteuert wird. Zu diesem Zwecke ist der Schieber 28 mit einer weiteren Durchdringung 35 und einer Kurvenführung 36 versehen. Ein Steuerhebel 44 ist zwischen dem abgewinkelten Lappen 23 und einem weiteren abgewinkelten Lappen 45 des Halteteiles 21 auf einer Achse 46 gelagert. Eine Feder 47 beeinflußt den Steuerhebel 44 in FIG. 5 im Gegenuhrzeigersinne. Es sei darauf hingewiesen, daß die Durchdringung 35 im Schieber 28 von der Welle 46 lediglich durchdrungen wird, wobei aber keinerlei Steuerungsfunktion auf den Hebel 44 ausgeübt wird. Die Steuerungsfunktion wird vielmehr von der Kurvenführung 36 ausgeübt, die dafür sorgt, daß der Steuerhebel 44 einen Waagehebel 48 aus einer unwirksamen Stellung, beispielsweise gemäß FIG. 2, in eine wirksame Stellung gemäß FIG. 3 verschwenken kann. Der Waagehebel 48 ist auf einem Bolzen 49 an dem Steuerhebel 44 schwenkbar gelagert und trägt je zwei vordere und hintere Halterollen 50, 51, 52 und 53. Es ist darauf hinzuweisen, daß die Achse 38 des Schneidrades 11 koaxial ist mit dem Lagerbolzen 49 des Waagehebels 48. Dadurch bedingt sind die beiden Halterollen 50, 51 einerseits der Schneidlage, die beiden Halterollen 52 und 53 andererseits der Schneidlage der Schneidrolle 11 angeordnet. Durch die von dem Schneidrad unabhängige Ansteuerung der Halterollen 50 bis 53 über den Schieber 28 und die Kurvenführung 36 wird sichergestellt, daß beide Elemente unabhängig voneinander elastisch auf dem Schneidbalken bzw. auf der Druckunterlage 8 aufliegen können. Gleichzeitig wird erreicht, daß die Formularbahnen 9 bereits vor Beginn und noch nach Beendigung des Schneidvorganges von den beiden Halterollen 50, 51 bzw. 52, 53 gehalten werden. Um die Auflage der beiden Halterollen 50, 51 einerseits und 52, 53 andererseits zu verbessern, sind die inneren Rollen 51, 52 mit einer elastischeren Auflage versehen als die äußeren Rollen 50, 53. Auf diese Art und Weise wird sichergestellt, daß am Beginn und am Ende des Schneidvorganges, also des Zusammenwirkens zwischen dem Schneidrad 11 und der Gegenschneide 20 keine Verschiebung der Formularbahnen erfolgen kann, so daß immer ein sauberer, rechteckig zu den Begrenzungskanten erfolgender Schnitt gewährleistet ist.The control device, consisting of the
Den gerade vor sich gehenden Schneidvorgang zeigt FIG. 6 in einer Schnittdarstellung. Man erkennt, daß das Schneidrad 11 nur unter dem sehr leichten Zug der Feder 41 an der Schneidkante der Gegenschneide 20 anliegt.FIG. 6 in a sectional view. It can be seen that the
FIG. 7 zeigt in vergrößerter Darstellung die Bewegung des Schneidrades 11 aus der angehobenen, zurückgezogenen Stellung gemäß FIG. 2 in die wirksame, abgesenkte Stellung. Die gestrichelte Linie zeigt, daß das Schneidrad 11 durch die beiden Kurvenführungen 33 und 34 vorgeschoben und abgesenkt wird. Für die Durchführung der Bewegung sind keinerlei zusätzliche Anlaufschrägen oder Schaltbolzen an dem Drucker selbst erforderlich. Das Umschalten erfolgt vielmehr lediglich durch Zusammenwirken der beiden Enden 31 und 32 des Schiebers 28 mit den beiden seitlichen Begrenzungsplatinen 1 und 2. Soll nicht geschnitten werden, so muß lediglich die Steuerung des Druckerschlittens 5 so erfolgen, daß die Bewegungsumkehr vor Erreichen der Begrenzungsplatinen 1 und 2 erfolgt.FIG. 7 shows in an enlarged view the movement of the
Claims (9)
- Cutting device for a form web, which is located on a printing head carriage (5) of a printer, with a cutting wheel (11) attached to a tilting lever (39), which cutting wheel can be driven by the movement of the printing head carriage (5) and can be pressed against a stationary counter-cutter (20), the cutting wheel (11) being brought by a control device from an inoperative, raised and retracted position into a position lowered and advanced into the cutting position and in the cutting position the cutting wheel (11) is held by a spring (41) in abutment against the counter-cutter (20), characterised in that the control device consists of a slide (28) with at least two cam guides, the first cam guide (34) bringing the cutting wheel (11) out of the raised into the lowered position and the second cam guide (33, 42, 43) bringing the cutting wheel (11) out of the retracted into the advanced position and then releasing it due to the force of the said spring (41).
- Cutting device according to Claim 1, characterised in that the slide (28) acquires its control movement due to cooperation with the lateral boundary plates (1, 2) restricting the movement of the printing carriage (5).
- Cutting device according to Claim 1, characterised in that the shaft (38) of the cutting wheel (11) is raised and lowered by the first cam guide (34) of the slide (28) so that the movements of the cutting wheel (11) are superimposed one on the other due to the first and second cam guide (34;33, 42, 43).
- Cutting device according to Claim 1, characterised in that the control device controls the holding rollers (50 to 53) for the form web (17), mounted independently of the cutting wheel (11), which rollers act on the form web (17) on both sides of the cutting wheel (11).
- Cutting device according to Claim 4, characterised in that the holding rollers (50 to 53) are disposed on a balance lever (48), which is automatically positioned in the holding position.
- Cutting device according to Claim 5, characterised in that two holding rollers (50 to 53) are respectively disposed on both sides of the cutting wheel (11).
- Cutting device according to Claim 6, characterised in that the holding rollers (51, 52) arranged adjacent to the cutting wheel (11) are provided with a more resilient covering than the outer holding rollers (50, 53).
- Cutting device according to Claim 5, characterised in that the balance lever (48) is moved by way of a control lever (44) from the inoperative retracted position into the operative position.
- Cutting device according to Claim 6, characterised in that the control lever (44) is actuated by way of a further, third cam guide (36) of the slide (28).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3510995 | 1985-03-27 | ||
DE19853510995 DE3510995A1 (en) | 1985-03-27 | 1985-03-27 | CUTTING DEVICE FOR FORM RAILWAYS |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0196580A2 EP0196580A2 (en) | 1986-10-08 |
EP0196580A3 EP0196580A3 (en) | 1989-01-11 |
EP0196580B1 true EP0196580B1 (en) | 1991-10-16 |
Family
ID=6266404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19860103937 Expired - Lifetime EP0196580B1 (en) | 1985-03-27 | 1986-03-22 | Apparatus for cutting form webs |
Country Status (3)
Country | Link |
---|---|
US (1) | US4701063A (en) |
EP (1) | EP0196580B1 (en) |
DE (1) | DE3510995A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0292660A (en) * | 1988-09-16 | 1990-04-03 | Ncr Corp | Paper cutting controller in printer device |
JP2796720B2 (en) * | 1988-09-16 | 1998-09-10 | エヌシーアール インターナショナル インコーポレイテッド | Recording paper cutting device |
US5025725A (en) * | 1989-07-21 | 1991-06-25 | Seiko Instruments, Inc. | Double paper cut system for printer mechanism |
NL8902710A (en) * | 1989-11-02 | 1991-06-03 | Audion Elektro Bv | DEVICE FOR OPENING THE ONE LAYER OF A TUBULAR MATERIAL TRACK. |
US5066153A (en) * | 1990-03-12 | 1991-11-19 | Genicom Corporation | Paper shear for printer |
DE4042486C2 (en) * | 1990-08-31 | 1994-10-06 | Data Techno Gmbh | Thermal printer e.g. for bus ID card |
US5303626A (en) * | 1990-11-09 | 1994-04-19 | Canon Kabushiki Kaisha | Cutting apparatus |
JPH0544592U (en) * | 1991-11-26 | 1993-06-15 | 武藤工業株式会社 | Automatic paper cutting device for plotter |
DE4205774C2 (en) * | 1992-02-21 | 1994-06-16 | Mannesmann Ag | Cutting device for form webs |
US5363123A (en) * | 1992-07-14 | 1994-11-08 | Hewlett-Packard Company | Cutter drive for a computer driven printer/plotter |
JP2541151B2 (en) * | 1994-05-16 | 1996-10-09 | 日本電気株式会社 | Paper cutting equipment |
NL9500398A (en) * | 1995-03-01 | 1996-10-01 | Oce Nederland Bv | Device for cutting a sheet from a web of holding material |
US7551201B2 (en) * | 1997-07-15 | 2009-06-23 | Silverbrook Research Pty Ltd | Image capture and processing device for a print on demand digital camera system |
US5882128A (en) * | 1997-09-02 | 1999-03-16 | Hewlett-Packard Company | Self-adjusting wheel for directly positioning and holding media during a cutting operation in a printer |
FR2774937B1 (en) * | 1998-02-13 | 2000-05-05 | Technologie Services | DEVICE FOR CUTTING PLATES OF VARIOUS MATERIALS IN THE FORM OF SHEETS |
US6315474B1 (en) * | 1998-10-30 | 2001-11-13 | Hewlett-Packard Company | Automatic paper cutter for large format printer |
EP1193035A4 (en) * | 1999-05-13 | 2009-08-26 | Canon Finetech Inc | Recording material cutting device |
US6554511B2 (en) * | 2001-02-27 | 2003-04-29 | Hewlett-Packard Development Co. | Media cutter and slicer mechanism for a printer |
US6550363B2 (en) * | 2001-04-10 | 2003-04-22 | Cai Bai He | Extendible compound miter saw |
JP2003341163A (en) * | 2002-03-20 | 2003-12-03 | Seiko Epson Corp | Cutting device for recording medium and recorder |
DE20212425U1 (en) * | 2002-08-13 | 2003-12-24 | Psi Printer Systems International Gmbh | Printer with a cutter for paper webs |
US20050268802A1 (en) * | 2004-06-02 | 2005-12-08 | Charles Evans | Printer for cutting patterns in paper |
NL1026445C2 (en) * | 2004-06-17 | 2005-12-20 | Holding Aldipro B V | Device for cutting off a sheet of web material each time. |
JP4830599B2 (en) * | 2005-07-12 | 2011-12-07 | セイコーエプソン株式会社 | Printing system, printing apparatus, printing data generation apparatus and program, cutting instruction data generation apparatus and program, printing program, and printing method |
DE102007019864B4 (en) * | 2007-04-23 | 2011-06-22 | KOENIG & BAUER Aktiengesellschaft, 97080 | Longitudinal perforating devices for a web-fed rotary printing machine with at least one perforating blade |
JP2012135971A (en) * | 2010-12-27 | 2012-07-19 | Seiko Epson Corp | Liquid discharge apparatus and liquid discharge method |
JP6880895B2 (en) * | 2017-03-24 | 2021-06-02 | セイコーエプソン株式会社 | Recording device |
JP2018176395A (en) | 2017-04-21 | 2018-11-15 | セイコーエプソン株式会社 | Cutting device and printer |
CN116061572B (en) * | 2023-02-13 | 2024-02-23 | 珠海芯烨电子科技有限公司 | Cutter assembly, cutter mounting assembly and printer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3960080A (en) * | 1975-02-12 | 1976-06-01 | The Singer Company | Combination rotary paper cutter and logo printer |
DE7713410U1 (en) * | 1977-04-28 | 1977-08-18 | Adlerwerke Vorm. Heinrich Kleyer Ag, 6000 Frankfurt | CUTTING DEVICE FOR PAPER TRAILS, IN PARTICULAR IN PRINTING UNITS OF DATA PROCESSING SYSTEMS |
DE7812759U1 (en) * | 1978-04-27 | 1978-08-24 | Triumph Werke Nuernberg Ag, 8500 Nuernberg | CUTTING DEVICE FOR PAPER TRAILS ON TYPE PRINTING DEVICES |
DE3063986D1 (en) * | 1979-11-10 | 1983-08-04 | Ibm | Cutting apparatus for an intermittently movable web |
IT1135600B (en) * | 1981-02-24 | 1986-08-27 | Honeywell Inf Systems | SERIAL PRINTER WITH CUTTER |
JPS57140183A (en) * | 1981-02-25 | 1982-08-30 | Tokyo Keisuu Kogyo Kk | Tag printer |
DE3209083C2 (en) * | 1981-03-13 | 1986-08-14 | Canon K.K., Tokio/Tokyo | Printing unit |
DE3141457A1 (en) * | 1981-10-19 | 1983-05-05 | GARDENA Präzisionstechnik GmbH, 7907 Niederstotzingen | Device for switching on a cutting roller |
-
1985
- 1985-03-27 DE DE19853510995 patent/DE3510995A1/en active Granted
-
1986
- 1986-03-22 EP EP19860103937 patent/EP0196580B1/en not_active Expired - Lifetime
- 1986-03-27 US US06/844,989 patent/US4701063A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE3510995C2 (en) | 1987-08-06 |
EP0196580A3 (en) | 1989-01-11 |
US4701063A (en) | 1987-10-20 |
EP0196580A2 (en) | 1986-10-08 |
DE3510995A1 (en) | 1986-10-09 |
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