EP0108356A1 - Papierschneidvorrichtung - Google Patents

Papierschneidvorrichtung Download PDF

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Publication number
EP0108356A1
EP0108356A1 EP83110816A EP83110816A EP0108356A1 EP 0108356 A1 EP0108356 A1 EP 0108356A1 EP 83110816 A EP83110816 A EP 83110816A EP 83110816 A EP83110816 A EP 83110816A EP 0108356 A1 EP0108356 A1 EP 0108356A1
Authority
EP
European Patent Office
Prior art keywords
roller
accordance
cutting
improvement
elastomeric material
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.)
Withdrawn
Application number
EP83110816A
Other languages
English (en)
French (fr)
Inventor
James A. Hartmann
Eduard Juergen Schellert
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.)
Baldwin Technology Corp
Original Assignee
Baldwin Technology 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 Baldwin Technology Corp filed Critical Baldwin Technology Corp
Publication of EP0108356A1 publication Critical patent/EP0108356A1/de
Withdrawn legal-status Critical Current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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • 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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder 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
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation

Definitions

  • This invention relates to papercutting apparatus.
  • Papercutting machines are widely used in such industries as the printing industry and rotary-type papercutting machines are popular for cutting strips or webs of paper of desired size.
  • rotary papercutting machines involve two cooperating rollers, one of which carries a knife and the other being an anvil against which the paper is cut. It is desired that the paper be cut cleanly and accurately, and to this objective a number of prior art patents are directed.
  • a major object of the invention is to provide improvements in rotary papercutting machines with respect to reduction of noise during operation of such machines.
  • Another object of the invention is to provide cutting surfaces for the cutting knives in rotary-type papercutting machines which can be readily repositioned to provide fresh surfaces for the cutting operation.
  • the above and other objects are accomplished in accordance with this invention by providing surfaces which are struck by cutting knives during the cutting operation formed of an elastomeric material.
  • the anvil cutting surfaces which are struck by the cutting knives formed of an elastomeric material With the anvil cutting surfaces which are struck by the cutting knives formed of an elastomeric material, the noise and vibration made by the papercutting machines during operation are significantly reduced. Moreover, such elastomeric surfaces are less damaging to the edges of the cutting knives thereby prolonging their useful lives.
  • the present invention is of general application with rotary-type papercutting machines which involve two cooperating rollers, with one roller carrying a cutting knife or knives and the other roller presenting a back-up surface or anvil against which a web of paper is cut.
  • Such rotary-type papercutting machines are well known in the art and thus will not be described in detail herein. Reference may be had to United States patents Nos. 2,660,242, 2,682,306, 3,709,077, 3,857,134and 3,893,
  • reference numeral 10 indicates a cutting roller provided with two diametrically located, radially extending and longitudinally disposed knives 12 and 14 mounted on roller 10 through knife mounts 15 and 16, respectively.
  • Diametrically located on back-up roller 20 are two cutting surfaces 22 and 24 formed of an elastomeric material and secured to roller 20 by means of mounts 23 and 25, respectively.
  • Knife 12 cuts a web of paper 27 by cutting into the elastomeric cutting surface 24 while knife 14 cuts the paper web by cutting into elastomeric cutting surface 22, the speed of rotation of the rollers 10 and 20 being synchronized to achieve cutting in this manner.
  • the cutting surfaces according to the invention are formed of an elastomeric resilient material which has high tensile strength to withstand repeated strikes by a cutting knife and which recovers its original dimensions substantially fully after being struck by the cutting knife.
  • elastomeric materials can thus be used, including urethane polymers such as urethane polymers available commercially from Mobay Chemical Company under the name "Texin” or from B.F. Goodrich Company under the name “Estane”.
  • Other representative elastomeric materials include "Pellethane” available from CPR Division of The Upjohn Company, "Roylar” available from Uniroyal Rubber Company and "Orthane” available from Ohio Rubber Company.
  • a particularly preferred elastomeric material for forming the cutting surfaces is "Estane” 58092 Compound which is a thermoplastic polyurethane material available from B.F. Goodrich having the following characteristics:
  • Figure 2 shows a plurality of arcuately arranged elastomeric cutting surfaces 30, 32, 34 and 36 of square shape mounted in longitudinally extending slots 37, 38, 39 and 40 provided in a metal mounting block 42.
  • Mounting block 42 can be attached to back-up roller 45 by means of screws or bolts receivable in one or more of the holes 47 in the center portion of the mounting block.
  • the extruded elastomeric strips 30, 32, 34 and 36 are preferably, but not necessarily, square in cross-section and are sized to be held within the slots 37, 38, 39 and 40 by frictional engagement and can, for example, have cross-sectional dimensions of 7/16 x 7/16 inch.
  • score lines or indentations designated by the reference numeral 50 may eventually appear on the surface of the elastomeric cutting surface.
  • the strips 30, 32, 34 and 36 having a square cross-sectional configuration can be removed and reinserted in reverse longitudinal orientation or can be inserted in a position 90° to that of the previous position.
  • ach strip can be positioned to present eight fresh cutting surfaces before it becomes necessary to replace the strip.
  • the number of mounting blocks 42 spaced around the periphery of the back-up roller 45 can be varied as desired to cut a paper web into strips of desired size.
  • the number of elastomeric cutting strips mounted within a mounting block can be varied with four being in Figure 2as illustrative.
  • the tangential positioning of the back-up roller 45 carrying the elastomeric cutting surfaces and the roller carrying the cutting knife 55 can be suitably adjusted so that at a given setting the knife 55 strikes any of the elastomeric cutting surfaces 30, 32, 34 or 36.
  • the radial positioning of the cutting blade 55 is generally such that the blade penetrates the elastomeric cutting surface to a variable depth of say, for example from about 0.010 to 0.080 inch thereby providing a neat,clean and . accurate web cut.
  • the knife edge can be razor blade-like,with the point- of the knife defining a relatively narrow angle, such as about 15 degrees to provide a straight cut as opposed to a ragged cut or a cut made by a knife having a serrated edge.
  • FIG. 4 Suitable means for mounting a cutting knife and an array of cutting surfaces in accordance with the invention is illustrated in Figure 4.
  • an L-shaped knife mount 62 is secured to cutting roller 66 by means of bold 67 and nut 68.
  • the cutting knife 55 can be radially adjusted at a desired position by means of bolt 70 and nut 71 with the bolt passing through holes 72 in knife clamp 58 and the slots 59 in knife 55 so as to tightly secure the knife between clamp 58 and the knife mount 62.
  • an assist finger 75 can be associated with the knife mount to assist in directing the paper web 76 into cutting position.
  • an anvil block 78 is secured to roller 80 by means of cap screw 81.
  • a mounting block 42 carrying four elastomeric cutting strips 30, 32, 34 and 36 is secured to anvil block 78 by means of cap screw 83 which passes through holes 47 in the mounting block 42.
  • an assist finger 85 can be attached to roller 80 by means of cap screw 87.
  • Figure 5 illustrates an embodiment of the present invention wherein a plurality of strips or plugs 90 are geometrically spaced around the periphery of a back-up roller 92 with appropriate grooves being provided along the circumference of the roller to accommodate and hold the elastomeric cutting surfaces.
  • the cooperating roller 94 carries four cutting knives 96, although the number of knives can be varied depending upon the size to which the paper is to be cut. For example, if one printing repeat of 24 inches is to be cut into 6-inch strips, four knives can be used on the cutting roller 94. Similarly, if the 24-inch repeat is to be cut into 8-inch strips, three cutting knives would be utilized and so forth.
  • the circumferential spacing of the knives around the periphery of the roller is suitably adjusted with thecutting action taking place on appropriately spaced elastomeric cutting surfaces 90.
  • certain of the cutting surfaces 90 are utilized while for cuts of different size other cutting surfaces 90 are utilized.
  • a back-up roller or cylinder 101 which is rotated by means of journaled drive shaft 102 has affixed over its entire outer surface a layer 104 of an elastomeric material such as "Estane" 5740X7 available from B.F. Goodrich Chemical Company.
  • FIGS 8 and 9 of the drawings illustrate an embodiment of the invention wherein segments 110 and 112 of an elastomeric material are secured by an adhesive or other means to mounting plates 114 and 116 formed of a readily machinable metal such as aluminum.
  • the mounting plates 114 and 116 are shaped so as to have projecting portions 117 and 119 which are clamped by means of a dovetail:- nut 120 which, in conjunction with cap screws 121 and 123, serves to secure the mounting plates on the back-up roller or cylinder 125.
  • a plurality of segments 110 and 112 of an elastomeric material are preferably utilized so as to cover the entire outer surface of the cylinder 125. As illustratively shown in Figure 9, each segment defines an arc of 45 degrees so that eight segments are required to completely encircle roller 125 to produce a substantially continuous uninterrupted elastomeric cutting surface.
  • an elastomeric cutting surface 130 is secured to the outer surface of a convex insert 132 which is received in appropriately sized cut-out portions 134 spaced around the periphery of a back-up roller 136.
  • the inserts 132 are secured to the roller by means of cap screws 137. Any desired number of inserts 132 can be employed depending upon the size of cut desired.
  • a cooperating cylinder or roller carries one or more cutting knives so as to make paper cuts of desired size with the cutting surfaces 130 serving as an anvil for the cutting operation.
  • Fabrication of the elastomeric cutting surfaces according to the invention is preferably accomplished by compacting and fluxing granules of a selected elastomeric resin material and extruding the molten material through a die opening designed to yield the desired profile.
  • the hot extrudate is immediately passed through a cold water through where it develops sufficient strength to be pulledaway from the die by a suitable take-up. After take-up the dimensioned part is cut to length.
  • the invention affords numerous advantages in the papercutting art.
  • the invention affords significant economic advantages by extending the useful life of costly cutting knives.
  • the invention also significantly reduces down time of papercutting machines for maintenance, repair or replacement of metal back-up or anvil cylinders. These cost savings result in lower costs for the printing industry or other users of the machines.
  • papercutting machines utilizing the present invention are relatively quiet in operation as compared with papercutting machines in which the cutting is done against metal anvils. The substantial noise reduction is of major benefit to the health and welfare of operators.
  • the significant reduction in vibration of papercutting machines using the present invention is quite advantageous with respect to lessened wear and strain on various elements associated with the papercutting machines.
EP83110816A 1982-11-08 1983-10-28 Papierschneidvorrichtung Withdrawn EP0108356A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44007582A 1982-11-08 1982-11-08
US440075 1999-11-15

Publications (1)

Publication Number Publication Date
EP0108356A1 true EP0108356A1 (de) 1984-05-16

Family

ID=23747321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110816A Withdrawn EP0108356A1 (de) 1982-11-08 1983-10-28 Papierschneidvorrichtung

Country Status (2)

Country Link
EP (1) EP0108356A1 (de)
JP (1) JPS59118396A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926640A1 (de) * 1989-08-11 1991-02-14 Hunkeler Ag Jos Vorrichtung zum querschneiden oder querperforieren von laufenden materialbahnen
WO1992010339A1 (de) * 1990-12-05 1992-06-25 Polatech Gmbh Formgebung für schutzleisten an papierschneidmaschinen
EP0920961A1 (de) * 1997-12-08 1999-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zum Querschneiden von Materialbahnen
FR2840558A1 (fr) * 2002-06-07 2003-12-12 Rapidex Sm Machine de traitement de feuilles avec des decoupes ou des plis transverseaux a leur direction d'avancement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0282499U (de) * 1988-12-12 1990-06-26
JP2981405B2 (ja) * 1994-10-17 1999-11-22 旭マシナリー株式会社 ロータリーカッター
JP2009078925A (ja) * 2009-01-08 2009-04-16 Komori Corp 回転体の刃受け装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628466A (en) * 1898-06-09 1899-07-11 Robert Hoe Cutting-stick and retaining device therefor.
US1678896A (en) * 1923-10-03 1928-07-31 Wood Newspaper Mach Corp Knife box for cutting cylinders
US3288007A (en) * 1964-10-05 1966-11-29 Eda Masumi Paper holding apparatus for cutting cylinder in a rolling press
DE1233246B (de) * 1964-06-01 1967-01-26 Louis Edward Sauer Gegenwalze fuer Rotationsschneider
DE2151928A1 (de) * 1970-10-23 1972-04-27 Polygraph Leipzig Vorrichtung zum Querschneiden von Papier oder dergleichen Bahnen
CH586097A5 (de) * 1974-07-15 1977-03-31 Wifag Maschf
FR2481985A1 (fr) * 1980-05-09 1981-11-13 Saint Gobain Vetrotex Dispositif pour la coupe de fils continus, notamment de fils de verre
GB2076723A (en) * 1980-05-30 1981-12-09 Albany Int Corp Apparatus for the precision cutting of hollow fibres

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US628466A (en) * 1898-06-09 1899-07-11 Robert Hoe Cutting-stick and retaining device therefor.
US1678896A (en) * 1923-10-03 1928-07-31 Wood Newspaper Mach Corp Knife box for cutting cylinders
DE1233246B (de) * 1964-06-01 1967-01-26 Louis Edward Sauer Gegenwalze fuer Rotationsschneider
US3288007A (en) * 1964-10-05 1966-11-29 Eda Masumi Paper holding apparatus for cutting cylinder in a rolling press
DE2151928A1 (de) * 1970-10-23 1972-04-27 Polygraph Leipzig Vorrichtung zum Querschneiden von Papier oder dergleichen Bahnen
CH586097A5 (de) * 1974-07-15 1977-03-31 Wifag Maschf
FR2481985A1 (fr) * 1980-05-09 1981-11-13 Saint Gobain Vetrotex Dispositif pour la coupe de fils continus, notamment de fils de verre
GB2076723A (en) * 1980-05-30 1981-12-09 Albany Int Corp Apparatus for the precision cutting of hollow fibres

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3926640A1 (de) * 1989-08-11 1991-02-14 Hunkeler Ag Jos Vorrichtung zum querschneiden oder querperforieren von laufenden materialbahnen
WO1992010339A1 (de) * 1990-12-05 1992-06-25 Polatech Gmbh Formgebung für schutzleisten an papierschneidmaschinen
EP0920961A1 (de) * 1997-12-08 1999-06-09 Heidelberger Druckmaschinen Aktiengesellschaft Vorrichtung zum Querschneiden von Materialbahnen
FR2771958A1 (fr) * 1997-12-08 1999-06-11 Heidelberger Druckmasch Ag Dispositif de coupe transversale de bandes de matiere et plieuse avec ou sans pointure comportant un tel dispositif de coupe
US6412383B1 (en) 1997-12-08 2002-07-02 Heidelberger Druckmaschinen Ag Device for cross cutting material webs
FR2840558A1 (fr) * 2002-06-07 2003-12-12 Rapidex Sm Machine de traitement de feuilles avec des decoupes ou des plis transverseaux a leur direction d'avancement
WO2003103937A1 (fr) * 2002-06-07 2003-12-18 Rapidex S.M. Machine de traitement de feuilles avec des decoupes ou des plis transversaux a leur direction d'avancement.
US8176821B2 (en) 2002-06-07 2012-05-15 Rapidex S.M. Machine for processing sheets with cutouts of folds transverse to their forward moving direction

Also Published As

Publication number Publication date
JPS59118396A (ja) 1984-07-09

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19850117

RIN1 Information on inventor provided before grant (corrected)

Inventor name: SCHELLERT, EDUARD JUERGEN

Inventor name: HARTMANN, JAMES A.