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EP0029122B1 - Appareil de découpe pour bande transportable par intermittance - Google Patents

Appareil de découpe pour bande transportable par intermittance Download PDF

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Publication number
EP0029122B1
EP0029122B1 EP80106270A EP80106270A EP0029122B1 EP 0029122 B1 EP0029122 B1 EP 0029122B1 EP 80106270 A EP80106270 A EP 80106270A EP 80106270 A EP80106270 A EP 80106270A EP 0029122 B1 EP0029122 B1 EP 0029122B1
Authority
EP
European Patent Office
Prior art keywords
cutting
pawl
cutting wheel
ramp
wheel
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
Application number
EP80106270A
Other languages
German (de)
English (en)
Other versions
EP0029122A1 (fr
Inventor
Helmut Stock
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0029122A1 publication Critical patent/EP0029122A1/fr
Application granted granted Critical
Publication of EP0029122B1 publication Critical patent/EP0029122B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/02—Means for moving the cutting member into its operative position for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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

Definitions

  • the invention relates to a cutting device for a material web that is only guided in the direction of the normal to the cutting edge of a cutting bar, can be transported step by step and is cut off at a standstill, with a slide that can be moved back and forth along a cutting bar, optionally adjustable in cutting position in at least one direction of movement, on a carriage on a Axially rotatably arranged cutting wheel and a roller arranged on the same axis and running on the material web to be cut, the roller in the cutting position serving as the drive roller for the cutting wheel.
  • Such cutting devices are known in data processing systems, in particular in printers.
  • a cutting device with a reciprocating cutting wheel which, when in contact with a cutting edge, cuts off the form or the like which is advanced via a slot on the cutting edge of the cutting bar itself. There is no provision for restraint here.
  • DE-B No. 2007689 provides a cutting device for sheet material, which can be cut off both in a stationary manner and with a continuous feed.
  • the ring-shaped cutting knife is connected to the knife carriage via a swivel plate in such a way that an actuating rope attached to the swivel plate and causing displacement of the carriage presses the cutting knife against the cutting bar during movement in one direction, while the swivel plate presses against the reversed movement abuts a projection of the carriage so that the cutting knife is raised above the cutting bar, wherein in the end position the annular cutting knife can be lifted off the cutting bar against the force of a spring.
  • the object on which the invention is based is to provide, in such a cutting device, a hold-down which, in the parts of a material web to be cut off, preferably a paper web, provides a flawless cutting edge which also has no warping and does not become bulky at the outer ends of the cutting edge .
  • the outer surface of the drive roller is a cylindrical outer surface that rolls on the material web lying on the cutting bar and that the common axis carrying the drive roller and the cutting wheel is about 3 ° to about 5 ° to the cutting edges running in the direction of the material web -Normal is aligned obliquely, the peripheral speed of the edge of the cutting wheel is about 15 to 17% higher than the peripheral speed of the outer surface of the drive roller during the cutting process.
  • the arrangement is preferably such that the angle which the axis carrying the cutting roller and the driving roller forms with the cutting edge normal is approximately 3.5 °.
  • this new cutting device for example for a printer for bank statements or the like, it is of particular importance if the cutting device itself is accommodated on the carriage carrying the print head and, in the process, provides devices by means of which the cutting roller on one line after the printing process has ended or transferred to work position on several lines and can be returned to the rest position at the end of the cutting process.
  • the arrangement is preferably such that the cutting wheel can be moved into the cutting position when the one ramp is passed over and the cutting wheel can be moved into the rest position when the other ramp is passed over in such a way that the latching claw under the action of the latching claw spring moves downward through the action of the other ramp shifted locking lug of the locking tab engages and sets this.
  • a part of a cutting device 1 which carries on a support arm 2 on an axis 3 a cutting wheel 4 which has a circular cutting edge 5 which is guided along a cutting edge 6 of a cutting bar 7 during the cutting process.
  • a drive roller 8 is arranged, which has a drive cylinder 9.
  • the cutting bar has a ramp 10 which is only schematically indicated in FIG. 1 and also a ramp 11 which can only be seen in FIG. 4B.
  • the cutting bar 7 is, as indicated schematically in FIG. 1, attached to a frame 12.
  • the axis 3 carrying the cutting wheel 4 and the drive roller 8 with the drive cylinder 9 is at an angle between approximately 3 ° and approximately 5 °, preferably at an angle of approximately 3.5 °, against the transport direction the material web to be cut or arranged against the cutting bar normal.
  • the support arm 2 is slightly angled at its upper end. However, this is only important in connection with the position of the cutting bar and its cutting edge, but is not absolutely necessary.
  • the switchover device for the cutting wheel which causes a switchover from the rest position to the cutting position, will be explained in detail.
  • a carriage 33 carrying the printhead and the cutting device of which only a base plate of the cutting device 32 is shown here, with the cutting device which is in the rest position, and causes e.g. line-by-line printing, for example of a record carrier, e.g. a paper web.
  • the cutting device can also be used as such without a printhead.
  • a catch arm 13 is attached to the frame 12 and can be pivoted upwards about a joint.
  • This catch arm 13 carries a catch claw 14 and is held in its latched position by a spring 15 which is suspended between two pins 16.
  • a locking tab 17 is articulated on the carriage 33, which is also held in its rest position by a spring 18 which is suspended on pins 19 and 20.
  • This locking tab 17 has a locking claw 21 and a release claw 22.
  • the support arm 2 has two elongated holes 23 and can therefore slide in the longitudinal direction, ie in the drawing from the bottom up and from the top down, guided by guide bolts 23a for the support arm 2.
  • the support arm 2 also has a Locking lug 24, in which, in the idle state, the locking claw 21 of the locking tab 17, which is normally under spring tension, engages and thus holds the support arm 2 in its lower position.
  • the carriage drive is reversed such that the carriage 33 is now guided all the way to the left.
  • the mode of operation of the ramp 10 should initially only be taken into account in part.
  • the release claw 22 passes under the catch claw 14 of the catch arm 13 against the bias of the spring 15.
  • the catch arm 13 can be rotated about the pivot point (not shown). If now the movement of the carriage starts in the opposite direction, then the release claw 22 remains on the catch claw 14 and thus causes the catch claw 21 to release the catch 24 after a short distance.
  • the support arm with the cutting wheel thereon with the drive roller and drive cylinder can now move upward.
  • the locking tab 17 is still held by the catch arm 13 and undergoes a rotational movement until the catch claw 14 and the release claw 22 slide against one another.
  • the rotational movement of the locking tab now reverses, and the locking claw 21 hits the support arm 2 with a delay, which has now followed the ramp 10, that is to say has made an upward movement, so that the locking claw 21 can no longer lock in the locking lug 24.
  • the cutting wheel now continues to follow the ramp contour and goes completely into the cutting position at the level of the cutting bar 6.
  • the force with which the spring 25 presses the drive cylinder against the material web lying on the cutting bar is also decisive for the size of the angle that the axis 3 with the cutting edge normal.
  • a tensile force of 8 N has proven to be particularly favorable for an angle of 3.5 °.
  • ramps 10 and 11 are designed as guide rails 29 and 30, the guide rail 29 being cranked away from the cutting bar, while the guide rail 30 is at a uniform distance from the cutting bar 7. 2, 3A and 3B that the cutting wheel carries a guide collar 28 at its rear end and that the cutting wheel 4 with the drive roller 8 and drive cylinder 9 can be moved along the axis 3 under spring preload.
  • the cutting wheel 4 runs with the drive roller 8 and drive cylinder 9, guided downwards by the ramp 10.
  • the cutting wheel 4 is also pressed outward by the cranked guide rail 29 and gets into the drive roller 8 and drive cylinder 9 position shown in Fig. 2, ie the circular cutting edge 5 of the cutting wheel 4 lies against the cutting edge 6 of the cutting bar 7, while the drive cylinder 9 of the drive roller 8 runs on the cutting bar and thus on the paper web or material web to be cut off.
  • the guide collar 28 of the cutting wheel 4 runs again onto the ramp 11 and its guide rail 30, is thereby pressed down again, whereupon the latching claw 21 grips the latching nose 24 which has been moved downward and thus the cutting device in its Locked rest position.
  • FIGS. 3A and 3B show again very schematically in FIGS. 3A and 3B, where on the one hand the working position of the cutting wheel is shown in FIG. 3A and the broken position in FIG. 3B shows the rest position of the cutting wheel.
  • the cutting device mounted on a carriage according to the invention does not require holding down the material web to be cut, because due to the inclination of the axis 3 carrying the cutting wheel with drive roller and drive cylinder via the drive cylinder 9 to the material web to be trimmed, a force component acting in the transport direction of the material web and a transversely thereto L irkende be exercised, furthermore by the smaller diameter of the drive cylinder compared to the diameter of the circular cutting edge 5 of the cutting wheel 4, the peripheral speed of the cutting edge is about 15 to 17% greater than the peripheral speed of the drive cylinder 9, which in turn the special force on the surface of the material web to be cut, while at the same time the actual circular cutting edge of the cutting wheel always leads the contact surface of the drive cylinder 9.
  • this new cutting device can consistently achieve consistent, first-class, completely smooth cutting edges over a very large number of cutting processes without any curls at the ends. While the invention has preferably been described in connection with a printhead of a printer, it should be readily apparent to those skilled in the art that this cutting device can also be used in other ways, e.g. can also be used without a printhead.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (6)

1. Appareil permettant de découper une bande de papier transportable par intermittence, guidée uniquement dans la direction de la normale vers le tranchant d'une barre de coupe et immobilisée pour cette opération, au moyen d'une roue de coupe (4) montée à rotation sur un axe (3) d'un chariot (33), qui se déplace selon un mouvement de va-et-vient le long du tranchant (7), et réglable au moins dans une direction de mouvement sur la position de coupe, ainsi qu'au moyen d'un galet monté sur le même axe (3) qui roule sur la bande de papier à découper, ledit galet servant, en position de coupe, de galet d'entraînement (8) pour la roue de coupe (4), caractérisé en ce que la surface périphérique (9) dudit galet d'entraînement (8) est une surface cylindrique, qui est en contact avec la bande de papier acheminée sur la barre de coupe (7), en ce que l'axe (3) portant à la fois le galet d'entraînement (8) et la roue de coupe (4) est orienté obliquement selon un angle allant d'approximativement 3° jusqu'approximativement 5° par rapport à la normale du tranchant de la barre, s'étendant dans la direction de la bande de papier, en ce que, au cours de l'opération de coupe, la vitesse circonférentielle de la périphérie de la roue de coupe (4) est plus élevée d'environ 15 à 17% que la vitesse circonférentielle de la périphérie du galet d'entraînement (8).
2. Appareil de découpe selon la revendication 1, caractérisé en ce que l'angle entre, d'une part, l'axe (3) portant la roue de coupe et le galet d'entraînement (8) et, d'autre part, la normale du tranchant de la barre de coupe est d'environ 3,5°.
3. Appareil de découpe selon les revendications 1 et 2, où, afin de faire passer la roue de coupe de sa position de repos à sa position de fonctionnement et vice versa, il est prévu une rampe à chacune des deux extrémités du trajet de la roue de coupe ainsi qu'un dispositif de verrouillage déverrouillable et verrouillable une fois que la roue de coupe est engagée sur l'une des deux rampes, caractérisé en ce que chacune des deux rampes située à chaque extrémité de la barre de coupe (10, 11) est inclinée vers le bas, en ce que le bras de support (2) portant la roue de coupe (4) et le galet d'entraînement (8) est monté coulissant à la verticale (23, 23a) sur le bâti du chariot (33) et maintenu au moyen d'un dispositif d'arrêt en position d'immobilisation à l'encontre d'un ressort de rappel (25), en ce que, à cette fin, le bras de support (2) est équipé en tant que dispositif d'arrêt d'une patte d'enclenchement (24) et d'une pièce de blocage (17) pivotante rappelée par un ressort (18) qui comporte un cliquet d'accrochage (21 ) et un cliquet de décrochage (22), ledit cliquet d'accrochage (21 ), étant en prise avec la patte d'enclenchement (24) en position de repos, en ce qu'un bras de retenue pivotant (13) monté sur le bâti (12) et également rappelé par un ressort (15) comporte un cliquet de retenue (14), grâce auquel, lorsque le chariot entre dans la zone dudit cliquet de retenue (14), ledit cliquet peut venir en prise avec le cliquet de décrochage (22) et, lorsque le chariot se déplace dans la direction opposée, le cliquet d'accrochage (21 ) se dégage de la patte d'enclenchement (24) de la pièce de blocage (17), autorisant ainsi le mouvement de la roue de coupe en position de coupe.
4. Appareil de découpe selon la revendication 3, caractérisé en ce que, lorsque la roue de coupe passe sur la rampe opposée (11), elle peut être ramenée en position de repos de telle sorte que le cliquet d'accrochage (21), actionné par son ressort de rappel (18), vient en prise avec la patte d'enclenchement (24) de la pièce de blocage (17), abaissée sous l'influence de l'autre rampe (11 ), et ainsi immobilise ladite patte d'enclenchement (24).
5. Appareil de découpe selon la revendication 4, caractérisé en ce que l'une des rampes (10) comporte une glissière de guidage (29) incurvée vers l'extérieur, en ce que l'autre rampe (11 ) comporte une glissière de guidage rectiligne (30), en ce que, en outre, la roue de coupe (4) est équipée, dans sa partie arrière, d'une collerette de guidage (28) laquelle, lorsque la roue s'engagesur l'une ou l'autre des deux rampes (10, 11), est guidée par la glissière de guidage correspondante, et en ce que la roue de coupe (4) peut être déplacée sur son axe (3) vers l'extérieur en direction axiale, à l'encontre de la force de rappel d'un ressort (31).
EP80106270A 1979-11-10 1980-10-15 Appareil de découpe pour bande transportable par intermittance Expired EP0029122B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2945453 1979-11-10
DE2945453 1979-11-10

Publications (2)

Publication Number Publication Date
EP0029122A1 EP0029122A1 (fr) 1981-05-27
EP0029122B1 true EP0029122B1 (fr) 1983-06-29

Family

ID=6085655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106270A Expired EP0029122B1 (fr) 1979-11-10 1980-10-15 Appareil de découpe pour bande transportable par intermittance

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EP (1) EP0029122B1 (fr)
DE (1) DE3063986D1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430443A1 (de) * 1984-08-18 1986-02-20 Ibm Deutschland Gmbh, 7000 Stuttgart Schneidvorrichtung fuer papier- und folienbahnen, insbesondere fuer druckwerke, plotter, kopiergeraete und aehnliche maschinen
DE3510995A1 (de) * 1985-03-27 1986-10-09 Mannesmann Kienzle GmbH, 7730 Villingen-Schwenningen Schneideinrichtung fuer formularbahnen
GB2213756B (en) * 1987-12-17 1992-09-30 Pitney Bowes Inc Cutter module for a modular mailing machine
DE4205774C2 (de) * 1992-02-21 1994-06-16 Mannesmann Ag Schneideinrichtung für Formularbahnen
US5819618A (en) * 1994-05-10 1998-10-13 Martin Yale Industries, Inc. Rotary paper trimmer
US6423233B1 (en) 2000-08-15 2002-07-23 Biogal Gyogyszergyar Rt. Purification process
CN115647984B (zh) * 2022-11-28 2024-12-06 河南津大幕墙有限公司 一种幕墙裁切磨边装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960175A (en) * 1933-02-10 1934-05-22 Coppet & Doremus De Cutter for typewriters
DE2343858C3 (de) * 1973-08-30 1979-05-03 Nixdorf Computer Ag, 4790 Paderborn Elektromechanisches Schreibwerk mit Rollenmesser
DE7713410U1 (de) * 1977-04-28 1977-08-18 Adlerwerke Vorm. Heinrich Kleyer Ag, 6000 Frankfurt Schneidvorrichtung fuer papierbahnen, insbesondere in druckwerken von datenverarbeitungsanlagen

Also Published As

Publication number Publication date
EP0029122A1 (fr) 1981-05-27
DE3063986D1 (en) 1983-08-04

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