EP0958112B1 - Vorrichtung zur anpassung eines zeichens an eine abschlusslinie in gefördertem bogenmaterial - Google Patents

Vorrichtung zur anpassung eines zeichens an eine abschlusslinie in gefördertem bogenmaterial Download PDF

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Publication number
EP0958112B1
EP0958112B1 EP97915159A EP97915159A EP0958112B1 EP 0958112 B1 EP0958112 B1 EP 0958112B1 EP 97915159 A EP97915159 A EP 97915159A EP 97915159 A EP97915159 A EP 97915159A EP 0958112 B1 EP0958112 B1 EP 0958112B1
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EP
European Patent Office
Prior art keywords
sheet
indicia
termination
lines
velocity
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
Application number
EP97915159A
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English (en)
French (fr)
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EP0958112A1 (de
Inventor
Kevin Benson Mcneil
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.)
Procter and Gamble Co
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Procter and Gamble Co
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Publication date
Priority claimed from US08/621,571 external-priority patent/US5802974A/en
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of EP0958112A1 publication Critical patent/EP0958112A1/de
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Publication of EP0958112B1 publication Critical patent/EP0958112B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
    • 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
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • 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
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/34—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices

Definitions

  • the present invention relates to registering indicia with lines of termination in a sheet.
  • the lines of termination may be perforations or a chop-off, which ends a first sheet and starts a second sheet, which sheets are typically presented in roll form.
  • the indicia may be visual, such as printed inks or embossments, or may be functional, such as adhesive.
  • Sheets for household use are well known in the art. It is often desired to decorate such sheets, such as by printing. Printing imparts an aesthetically pleasing pattern to the sheet. Alternatively, the sheet may be embossed to impart an aesthetically pleasing pattern which is also tactually discernible.
  • Such sheets are typically made in continuous form, then later cut to discrete lengths as desired. Such cutting to discrete lengths may occur at the point of use, such as is caused by the consumer detaching one sheet from the balance thereof at a line of termination.
  • the line of termination typically comprises a line of weakness, such as a perforation.
  • the continuous sheet may be cut into discrete portions prior to the point of use. Such an arrangement often occurs in individual napkins which are cut during manufacture and purchased by the consumer as discrete units.
  • the cumulative error of discrete napkins each having a machine direction length of about 12 inches (30,5 cm) is about 0.125 inches (3,18 mm).
  • the prior art cumulative error over 700 inches (17,8 m) of continuous sheet is about 0.5 inches (1,27 cm). This greater cumulative error makes it infeasible to use prior art processes to manufacture such rolls of paper toweling.
  • parent roll is the large roll of product later converted to multiple individual sheets by the apparatus and process disclosed herein.
  • Different parent rolls have different properties which affect the transport of the sheet through the apparatus. For example, the amount of stretch in the sheet as it travels through the apparatus frequently varies greatly between parent rolls. As these properties vary, so does the registration of the indicia with the lines of termination. Such variations in registration must be accounted for in the manufacturing process.
  • Each vertex of the two graphs in Fig. 1 represents a chop-off cut, where the sheet is cut into a discrete unit from the succeeding sheet.
  • the greater length of the paper toweling sheet results in proportionally greater cumulative error in the sheet.
  • a "unit" is defined as that portion of the sheet which is discrete as delivered to the consumer, as, for example, a single table napkin or a single roll of paper toweling or toilet tissue. It will be apparent that the length of the paper toweling or toilet tissue is significantly greater than the length of the discrete table napkin. The cumulative error will, of course, be greater in the paper toweling or toilet tissue, in an amount proportional to the difference in sheet length.
  • Sheet length is defined as the length of the product, taken in the machine direction, as presented to the consumer.
  • the sheet length of a discrete napkin or placemat is the machine direction length of one napkin or placemat.
  • the sheet length of a roll of perforated paper toweling is the machine direction length of the entire roll, taken from the point of core attachment to the tail seal.
  • US Patent 5,292,299 issued February 26, 1993 to Anderson, discloses an apparatus for making plastic bag from a continuous film of material, registering print marks and perforations on said continuous film.
  • US Patent 4,610,649 issued September 9, 1986 discloses an apparatus for the registration of punched-out openings with print marks on a moving cardboard web.
  • the invention comprises an apparatus and a proces for registering indicia with lines of termination in a sheet according to the preambles of claims 1 and 21, as known from US-A-4 610 649.
  • the registration occurs while the sheet is being transported through the apparatus.
  • the apparatus comprises a means for transporting a sheet in a first direction, and means for applying indicia to the sheet from a system movable relative to the sheet.
  • the apparatus further comprises a means for imparting lines of termination to the sheet.
  • the apparatus further comprises a means for adjusting the spaced relationship between the indicia and the lines of termination. The adjustment may be made by changing the phase of the indicia or the lines of termination on the sheet.
  • the lines of termination comprise perforations extending in a direction generally orthogonal to the direction of transport.
  • the apparatus may comprise a transport mechanism for transporting the sheet through the apparatus and a blade which imparts a line of termination to the sheet as it is being transported.
  • the apparatus may further comprise a system for applying indicia to the sheet, the indicia being sized to fit between adjacent lines of termination and disposed in spaced relationship thereto.
  • One of the systems for applying the indicia and the blade is adjustable relative to the sheet as it is transported, so that the spacing of the indicia relative to the lines of termination can be adjusted while the sheet is being transported.
  • the invention comprises a process for registering indicia and lines of termination in a moving sheet
  • the process comprises the steps of providing a generally planar sheet. The sheet is transported at a first velocity. Indicia are applied to the sheet from a means for applying the indicia which is movable relative to the sheet at a second velocity. Lines of termination are imparted to the sheet, preferably from a blade movable relative to the sheet at a third velocity.
  • the process finally comprises the steps of varying one of the first, second or third velocities to adjust or maintain the predetermined spacing.
  • the invention comprises a sheet having indicia and lines of termination registered with the indicia.
  • the sheet comprises a generally planar sheet transportable in a first direction and the indicia applied to the sheet as it is transported.
  • the sheet further comprises lines of termination being in spaced relationship with the indicia as taken in the first direction.
  • the spaced relationship is variable in the first direction while the sheet is transported. Such variation allows the lines of termination and the indicia to become closer together or further apart, without interruption of the transport of the sheet.
  • the sheet may have a principal direction coincident the machine direction of manufacture.
  • the sheet has a length, taken in the principal direction, of at least 500 inches (12,7mm).
  • the sheet further comprises indicia and lines of termination, the indicia and lines of termination being in spaced relationship relative to one another.
  • the spaced relationship is maintained at a tolerance of ⁇ 0.125 inches (3,18 mm) throughout the entire length of the sheet.
  • the tolerance is maintained within ⁇ 0.063 inches (1,6 mm).
  • the sheet 14 according to the present invention is generally planar, soft and absorbent.
  • the sheet 14 is suitable for use in application, such as toilet tissue, paper toweling, placemats, napkins, etc.
  • the sheet 14 is preferably wound in roll form.
  • the sheet 14 is cellulosic, and preferably paper.
  • Sheets according to the present invention may be made according to commonly assigned U.S. Patents 4,191,609 issued March 4, 1980 to Trokhan; 4,637,859 issued January 20, 1987 to Trokhan; and 5,245,025 issued September 14, 1993 to Trokhan et al., the disclosures of which patents are incorporated herein by reference.
  • the sheet 14 is preferably manufactured in a continuous process, then later cut into discrete units according to how the final product will be distributed to the consumer.
  • Discrete units include roll products (such as paper toweling and bath tissue) and individual sheets (such as table napkins).
  • the sheet 14 is presented to the consumer as an individual unit having a sheet length.
  • the product is preferably presented to the consumer in roll form, wound in a spiral about a core to yield a core wound paper product.
  • the core wound paper product has a length taken in the principal, or first direction.
  • Indicia 30 and lines of termination 20 are disposed in spaced relation throughout the sheet 14. The indicia 30 may be intermediate or straddle the lines of termination 20.
  • the length of a sheet 14 is its unfolded dimension taken in a first direction.
  • the first direction is coincident the machine direction of the sheet 14 during its manufacture and while in continuous form.
  • the first direction is also the principal direction of the sheet length. Plies or layers making up the sheet 14 are not separated when determining its length.
  • the leading and trailing edges 16, 18 of the sheet 14 are defined by lines of termination 20.
  • the lines of termination 20 are the lines separating the sheet 14, as presented to the consumer, into discrete units - if such separation has not been performed at the time of manufacture.
  • Typical lines of termination 20 include both perforations 21 and chop-off cuts 22.
  • Perforations 21 are lines of weakness which allow separation of the sheet 14 into discrete units by the consumer as needed.
  • Chop-off cuts 22 separate an individual sheet 14 from the adjacent sheet 14 in the manufacturing process, or terminate one roll and start the succeeding roll in the manufacturing process.
  • Coincident with each line of termination is a leading edge and a trailing edge 16, 18 of the sheet 14, the leading edge 16 being ahead of the trailing edge 18 in the manufacturing process.
  • the lines of termination 20, particularly the perforations 21, are oriented in the cross-machine direction and are transverse to the first direction of transport of the sheet 14.
  • lines of termination 20 having a diagonal orientation or having any other spaced relationship in the machine direction may be utilized.
  • Two longitudinal edges 28 connect the leading and trailing edges 16, 18.
  • the longitudinal edges 28 are oriented substantially in the longitudinal, or first, direction. While the embodiment in Figure 2 shows the longitudinal edges 28 being straight and parallel, and the leading and trailing edges 16, 18 being straight and parallel, it will be recognized by one of ordinary skill that depending upon the arrangement used to cut the longitudinal edges 28 from the trim of the sheet 14, the longitudinal edges 28 need not be either straight or parallel as shown in the preferred embodiment Likewise, the leading and trailing edges 16, 18 need not be straight and parallel as shown.
  • the sheet 14 is transported through the apparatus 10 by any suitable means. Typically the sheet 14 is drawn through the apparatus 10 under tension. Tension may be applied to the sheet 14 by winding it about a rotatable reel.
  • the rotatable reel may be cylindrical and driven by an electric motor at a predetermined angular velocity.
  • a suitable electric motor is a direct current synchronous motor delivering about 30 horsepower (22,4 kW) at 3000 rpm.
  • a particularly preferred motor is available from the Reliance Electric Co. of Cleveland, OH.
  • Juxtaposed with the leading and trailing edges 18 of the sheet 14, and generally oriented in a second direction which is within the plane of the sheet 14 and generally orthogonal to the first direction are indicia 30.
  • the indicia 30 are spaced from the lines of termination 20 so that a spaced relationship is formed therebetween. The space relationship is predetermined and may be adjusted during manufacture.
  • the indicia 30 may be aesthetically pleasing and printed, either in a single color or in a plurality of colors. Alternatively, the indicia 30 may be embossed.
  • the indicia 30 are applied to the sheet 14 while it is being transported through the apparatus 10 described below.
  • the indicia 30 may be applied to the sheet 14 by any means known in the art suitable for applying spaced indicia 30 at predetermined repeating intervals.
  • the indicia 30 are printed onto the sheet 14 from a rotatable cylinder.
  • the rotatable cylinder is driven about a central axis at a predetermined angular velocity.
  • Suitable printing processes known in the art include gravure printing and flexographic printing.
  • a suitable apparatus 10 for applying the indicia 30 to the substrate is disclosed in commonly assigned patent 5,213,037 issued May 25, 1993 to Leopardi, II, the disclosure of which patent is incorporated herein by reference.
  • the print cylinder 34, or other means for applying the indicia 32 to the sheet 14, may be driven by any suitable means, such as an electric motor.
  • a suitable electric motor is a direct current synchronous motor delivering about 25 (18,7 kW) -125 (93.3 kW) horsepower at a predetermined angular velocity of 1700 to 1800 rpm.
  • any embossing technique well known in the art is suitable. Suitable embossing techniques include those described in commonly assigned U.S. Patents 3,414,459 issued December 3, 1968 to Wells; 3,556,907 issued January 19, 1971 to Nystrand; and 5,294,475 issued March 15, 1994 to McNeil, the disclosures of which are incorporated herein by reference.
  • the indicia 30 may impart functional properties to the sheet 14 rather than visual or aesthetically pleasing properties.
  • the indicia 30 may comprise adhesive, as, for example, would be used to join two plies together to form a sheet 14 having a double thickness.
  • functional indicia 30 can be used to change properties at one portion of the sheet 14 relative to another portion of the sheet 14. For example, adhesive used to join the tail of a core wound product to the periphery of the product may be applied to the sheet 14, as well as adhesive used to join the leading edge of a sheet 14 to the core about which the sheet 14 is wound.
  • the means for applying the indicia 32 need only have the capability of applying the indicia 30 in spaced apart relationship in the first direction and to apply the indicia 30 at a frequency yielding indicia 30 at predetermined repeating intervals.
  • the indicia 30 may be applied by any suitable system.
  • a suitable system comprises a rotatable cylinder, driven to rotate about a central axis.
  • indicia 30 may be juxtaposed with one or both of the longitudinal edges 28. If each of the leading, trailing and longitudinal edges 28 have indicia 30 juxtaposed therewith, a border is formed in the sheet 14. This border can define and enhance the appearance, or functionality, of the sheet.
  • the lines of termination 20 may be applied by any suitable means for imparting lines of termination 20 to the sheet 14.
  • the suitable means must also apply the lines of termination 20 at a frequency which yields predetermined repeating intervals.
  • the lines of termination 20 may totally separate the continuous sheet into discrete units, or may provide lines of weakness, such as perforations 21.
  • Suitable means for imparting the lines of termination 20 include blades which are generally orthogonal to and impart lines of termination 20 generally orthogonal to the first direction of transport of the sheet 14, and which define adjacent leading and trailing edges 18 of successive sheets 14.
  • a suitable means for imparting the line of termination comprises a rotatable blade 36 driven about a central axis at a predetermined angular velocity on a perforator roll.
  • a rotatable blade 36 driven about a central axis at a predetermined angular velocity on a perforator roll.
  • one or more rotatable blades 36 may be driven on a common shaft, as is well known in the art.
  • a rotatable blade 36 suitable for imparting perforations 21 to the sheet 14 is disclosed in commonly assigned U.S. Patent 5,114,771 issued May 19, 1992 to Ogg et al., the disclosure of which is incorporated herein by reference.
  • the line of termination is the chop-off, it may be accomplished by two rotatable rolls juxtaposed together, a chop off roll and a bed roll 48, as is well known in the art.
  • a chop off roll and a bed roll 48 are rotatable rolls juxtaposed together.
  • the apparatus 10 will likely still comprise a chop-off roll 46 and a bed roll 48 to separate adjacent sheets, each having a plurality of perforations 21.
  • a particularly preferred embodiment of chop off and bed rolls 48 is disclosed in commonly assigned patent 4,919,351 issued April 24, 1990 to McNeil, the disclosure of which is incorporated herein by reference.
  • the rotatable blade 36 may also be driven by any suitable means, such as an electric motor, as set forth above. If both a perforator blade and chop-off blade are used in the apparatus 10, they may be driven by independent motors, or by a common motor.
  • the first type of motor is described above.
  • This type comprises one or more draw or drive motors which impart angular velocity to one or more rotatable components of the apparatus 10.
  • This first type of motor is generally more powerful and coarser in adjustment than the second type of motor.
  • the first type of motor is connected to the rotatable component through a differential 50.
  • the draw or drive motor(s) also transport the sheet 14 through the apparatus 10, due to the angular velocity imparted to the sheet 14 by the rotatable components of the apparatus 10.
  • the differential 50 comprises a mechanical drive capable of altering the angular velocity of the output shaft 52 within a resolution of at least 0.001 percent of the baseline angular velocity of the output shaft 52. Preferably this resolution is maintained over a range of ⁇ 4 percent of the baseline angular velocity of the output shaft 52.
  • the output shafts 52 have an angular velocity of 200 to 1500 rpms.
  • the differential 50 provides for angular adjustment of less than 1 rpm.
  • the differential 50 comprises an output shaft 52 coupted to the rotatable component.
  • the output shaft 52 rotates with respect to the cage 54 of the differential 50, which houses and rotatably mounts the output shaft 52.
  • a suitable phasing differential 50 is supplied by Andantex, Inc. of Wanamassa, New Jersey as a Model No. SA30 epicyclic unit.
  • the second type of motor is a correction motor, typically a servo-motor.
  • This second type of motor drives the cage 54 of the differential 50, so that the angular velocity of the cage 54 is superimposed with the angular velocity of the input shaft 51. Such superposition yields a very accurate and well controlled angular velocity at the output shaft 52.
  • the correction motors typically are about 2 to 4 hp (1.5 to 2.94 kW).
  • the correction motors can be precisely and accurately adjusted to a particular angular velocity, independent of the angular velocity of the draw or drive motor. Moreover, as the angular velocity of the draw or drive motor changes, compensation can be made by the correction motor as the sheet 14 is being transported through the apparatus 10, without interruption of the transport of the sheet. Compensation can also be made as the sheet 14 is being transported through the apparatus 10, and without interruption of the transport of the sheet, should web tension change, or should any other factor change the spaced relationship between the lines of termination 20 and the indicia 30.
  • the lines of termination 20 and indicia 30 may be imparted and applied to the sheet, respectively, in any desired order. However, the latter of the lines of termination 20 and indicia 30 to be imparted or applied to the sheet 14 constitutes the operation controlled by the apparatus 10 to maintain the desired spaced relationship therebetween.
  • the indicia 30 are applied to the sheet. Then the lines of termination 20 are imparted to the sheet. If the sheet 14 has both perforations 21 and a chop-off cut, typically the perforations 21 are imparted prior to the chop-off cut.
  • the desired spacing of the lines of termination 20 relative to the indicia 30 is achieved and maintained by adjusting the placement of the lines of termination 20, rather than by adjusting the placement of the indicia 30.
  • the apparatus 10 may particularly comprise a sheet length correction motor 45.
  • the sheet length correction motor 45 controls the angular velocities of the perforator roll, chop-off roll 46 and bed roll 48. If the product is supplied as a core wound product, as for example is common with toilet tissue and paper toweling, the sheet length correction motor 45 may further control the angular velocity of the indexing turret and core loading functions of that turret. The turret winds the product onto the core and performs the other functions ancillary to core winding, such as core loading onto the mandrel, applying adhesive to the core, chop-off of the sheet, applying tail seal adhesive to the end of the sheet, etc.
  • a preferred system having a sheet length correction motor 45 is illustrated in commonly assigned patent 4,687,153 issued Aug. 18, 1987 to McNeil, the disclosure of which is incorporated herein by reference.
  • a differential 50 is disposed functionally intermediate the sheet length correction motor 45 and the means for imparting the lines of termination 20 to the sheet.
  • the apparatus 10 further comprises a means for determining the position of the means for imparting lines of termination 20 or the means for applying indicia 30 to the sheet 14, whichever occurs later in the manufacturing process.
  • a typical means for determining position is a position resolver 38 linked to the rotatable blade 36, or other component, such as the print cylinder 34, to be controlled in response to the error signal.
  • a suitable position resolver 38 is capable of determining angular position within at least 0.1 degrees.
  • a preferred position resolver 38 has 4,096 pulses per rotation.
  • a suitable position resolver 38 is available from the Reliance Electric Co. of Cleveland, Ohio as Model No. M/N 57C360 and is typically designated by the motor which drives the rotatable component from which the signal is taken.
  • the resolver may be used in conjunction with a resolver input module, such as is available from Reliance Electric as Part No. M/N 57C411.
  • an encoder can be substituted for the position resolver 38, provided one uses the appropriate control logic, as is well known in the art.
  • the apparatus 10 further comprises a means for sensing the position of the indicia 30 to the sheet. Preferably the determination is made by sensing the difference in reflectance between the indicia 30 and the sheet.
  • Two such means for sensing position 40 should be provided.
  • the means are located on opposite sides of the sheet, at coincident locations as taken in the cross machine direction.
  • Each such means determines the position of the indicia 30 on its respective side of the sheet.
  • the positions of the indicia 30 are compared for skew, and cross machine direction skew is corrected as necessary, using means well known in the art such as cocking rolls or other members which influence path length.
  • the two positions of the indicia 30 sensed on the opposite sides of the sheet 14 are averaged and a single position is used in generating the error signal.
  • the indicia 30 may not provide adequate contrast with the sheet.
  • a registration mark 31 may be applied to the sheet 14 in register with the indicia 30. If a registration mark 31 is applied to the sheet, preferably it is applied to the trim of the sheet. Trim refers to that portion of the sheet 14 at the outboard edges, and which is later removed from the portion of the sheet 14 which is presented to the consumer. Since the trim is not presented to the consumer, the registration mark 31 may be of any size and shape suitable for indicating its position to the sensing means. Preferably the registration mark 31 is printed onto the sheet 14 by the same printing plate used to print the indicia 30. In this manner the spacing of the registration mark 31 relative to the indicia 30, or any part thereof, is known.
  • the desired spacing of the indicia 30 relative to the lines of termination 20 is likewise known.
  • the desired spacing may be zero, whereby the registration mark 31 (or portion of the indicia 30 detected by the sensing means) is coincident the lines of termination 20.
  • the registration mark 31 (or portion of the indicia 30 detected by the sensing means) may be offset in either direction from the lines of termination 20.
  • the apparatus 10 may further comprise a signal comparator 44.
  • the signal comparator 44 is capable of subtracting two input signals to produce an error signal.
  • the first input signal to the signal comparator 44 is the actual spacing between the indicia 30 (or the registration mark 31) and lines of termination 20. This input signal may be provided in seconds, based upon the distance between the indicia 30 and lines of termination 20 and the speed at which the sheet 14 is transported through the apparatus 10.
  • a suitable signal comparator is a Reliance Electric AutoMax Processor Module comprising the resolver photo eyes and resolver input cards.
  • the second input signal to the signal comparator 44 is the position of the means for imparting lines of termination 20 to the sheet 14.
  • the signal comparator 44 subtracts the two input signals to yield an error signal.
  • the preset value is the desired spacing between the indicia 30 (or registration mark 31) and lines of termination 20. Suitable preset values for use with the present invention are ⁇ 0.125 inches (3,18 mm) (for a total range of 0.25 inches), (6,35 mm) and preferably ⁇ 0.063 inches (1,6 mm) (for a total range of 0.125 inches) (3,18 mm) over the entire length of the sheet 14.
  • the apparatus 10 activates the appropriate motor, such as the sheet length correction motor 45.
  • the appropriate motor adjusts the placement of the lines of termination 20 on the sheet, so that the lines of termination 20 may be brought closer to or further from the indicia 30, thereby changing the spaced relationship therebetween.
  • Such correction occurs while the sheet 14 is being transported through the apparatus 10 and without interruption of the transport.
  • This moving correction is feasible because the appropriate motor is adjusted while it turns at a predetermined angular velocity.
  • the means for changing the spaced relationship between the indicia 30 and the lines of termination 20 may be any means which changes the path length of the sheet 14 between the means for applying the indicia 32 and the means for imparting the lines of termination 20.
  • the path length of the sheet 14 may be changed by using an idler roll 60 which moves in a direction having a component orthogonal to the machine direction, as indicated by arrow 61, and preferably orthogonal to the path of the sheet 14 at the particular position of the idler roll 60.
  • Suitable idler rolls 60 are available in well known tracking systems, and are available from the Fife Company and the Mount Hope Company.
  • the sheet path length may be changed by deflecting the web 11 with air jets or other non-contacting means.
  • Another means for changing the sheet path length is to change the length of the sheet 14 within the path.
  • the tension applied to the sheet 14 (such as by the draw motor) is changed as the sheet 14 is transported between the means for imparting the lines of termination 20 and the means for applying the indicia 32.
  • Sheet tension may be changed throughout this portion of the apparatus 10, as is well known in the art, by using driven rolls at positions intermediate such means, or by constantly increasing the draw of the sheet 14 through the apparatus 10 (for example by using the draw motor).
  • Yet another means to change the spaced relationship between the indicia 30 and the lines of termination 20 comprises incrementally changing the angular velocity of either or both of the means for imparting the lines of termination 20 or the means for applying the indicia 32. This may be accomplished by discrete adjustments to the phasing of such means on an as-needed basis, given the instantaneous value of the error signal discussed above.
  • any of the three foregoing means for changing the spaced relationship between the indicia 30 and the lines of termination 20 can be collectively considered as a means for changing the phase of the lines of termination 20 relative to the indicia 30 or vice versa. Such change of phase is accomplished by changing the phase of one or both of the means for imparting the lines of termination 20 or the means for applying the indicia 32.
  • the sheet 14 is moved relative to the apparatus 10, preferably by holding the apparatus 10 stationary and drawing the sheet 14 through the apparatus 10 in the machine direction.
  • the sheet 14 may be drawn through the apparatus 10 with a motor driving any suitable roll or rolls which frictionally engage the sheet 14 as it is drawn through the apparatus 10.
  • a draw motor is typically used in conjunction with a draw correction motor for this purpose.
  • the first step performed by the apparatus 10 is to apply the indicia 30 to the sheet.
  • the indicia 30 may be applied by a rotatable print cylinder 34 having a predetermined angular velocity, such as is used in flexographic or gravure printing.
  • the rotatable print cylinder 34 is preferably driven independently from the draw motor and draw correction motor used to transport the sheet 14 through the apparatus 10.
  • the indicia 30 may include registration marks 31 which are later trimmed from the sides of the sheets.
  • the registration marks 31, or a point on the indicia 30 which are presented to the consumer, are optically detectable.
  • the second step performed by the apparatus 10 is detection of the indicia 30 (or registration mark 31). Detection is performed by a photocell 41, based upon the difference in reflectance between the indicia 30 and the background. For accuracy, the photocell 41 is preferably disposed just before the rotatable blade 36.
  • the third step performed by the apparatus 10 is to impart the lines of termination 20 to the sheet.
  • the lines of termination 20 are placed on the sheet 14 in spaced relationship to the indicia 30. The spacing is in the first, or machine direction.
  • the lines of termination 20 are preferably perforations 21, but may be the chop-off cut 22.
  • the lines of termination 20 are preferably oriented in the cross machine direction.
  • the fourth step performed by the apparatus 10 is determination of the position of the perforations 21, or other lines of termination 20. This determination is made by knowing the position of the rotatable blade 36 which imparts the perforations 21 to the sheet 14. The position of the rotatable blade 36 is given by a resolver 38 which determines the position of the rotatable blade 36, and hence the perforations 21 imparted by the rotatable blade 36.
  • the difference in position between the indicia 30 and the perforations 21 is determined by a signal comparator 44. This difference constitutes an error signal. If the difference exceeds, in either direction, a preset limit, correction is made.
  • Correction may be made by adjusting the angular velocity of the draw correction motor, the sheet length correction motor 45, the rotatable blade 36, or the rotatable print cylinder 34.
  • the correction is made by adjusting the angular velocity of a sheet length correction motor 45.
  • the sheet length correction motor 45 controls the angular velocity of the rotatable blade 36 which imparts the perforations 21, as well as the chop-off roll 48 and bed roll 48, as well as functions downstream of the apparatus 10.
  • the correction is preferably done by adjusting the angular velocity of the rotatable blade 36, relative to the velocity of the sheet. This angular velocity is increased or decreased, as needed, until the error signal comes within the preset limit.
  • the sheet 14 according to the present invention is presented to the consumer as a core wound or rolled paper product.
  • a product is suitable for use as paper toweling, placemats, etc.
  • the sheet 14 may have a length in the principal direction of at least 500 (12,7m) inches, preferably at least 700 inches (17,8 m); more preferably at least 900 inches (22,9 m), and most preferably at least 1100 inches (27.9 m).
  • lines of termination 20 which define the length of the sheet, may be a plurality of lines of termination 20 which provide a line of weakness.
  • lines of weakness comprise perforations 21.
  • the perforations 21 may be spaced on a pitch of about 4.0 (10,2 cm) to 20 inches (50,8 cm) , with a preferred pitch of about 4.5 to 14 inches, and a more preferred pitch of about 12.0 (30,5 cm) to 12.5 inches (31,8 cm).
  • the perforations 21 are generally oriented in the cross-machine direction, and are generally orthogonal to the direction of transport of the sheet 14 through the apparatus 10.
  • the perforations 21 extend throughout the width of the product, as measured between the longitudinal edges 28 of the sheet.
  • the indicia 30 are maintained in spaced relationship to the perforations 21.
  • the indicia 30 are registered between the perforations 21 and juxtaposed with both the leading and trailing edges 18 of the sheet. In this manner, symmetry about the cross-machine direction centerline of the sheet 14 is obtained.
  • indicia 30 may be registered with the longitudinal edges 28 of the sheet 14 so that symmetry about the machine direction centerline of the sheet 14 is also obtained.
  • a single web 11 having a width several times greater than the sheet 14 presented to the consumer is transported through the apparatus 10.
  • a "web” comprises a plurality of sheets integral with one another and simultaneously transported through the apparatus 10 in parallel in the cross-machine direction.
  • the web 11 is later slit or cut, in the machine direction, into individual sheets. Trim is also removed from the longitudinal edges 28 of the web 11, as discussed above with respect to single sheet widths.
  • indicia 30 and multiple lines of termination 20 are imparted to the sheet 14 in parallel across the width of the web 11.
  • the web 11 is later slit or cut into individual sheets, as desired.
  • the means for sensing the position 40 of the indicia 30 on the sheet 14 will be in spaced relationship in the cross-machine direction. If desired, one may add a plurality of additional means for sensing the position 40 of the indicia 30 at intermediate positions across the width of the web 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Making Paper Articles (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Labeling Devices (AREA)
  • Image Processing (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Packaging For Recording Disks (AREA)
  • Facsimile Transmission Control (AREA)
  • Sorting Of Articles (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Materials For Medical Uses (AREA)
  • Sanitary Thin Papers (AREA)
  • Replacement Of Web Rolls (AREA)

Claims (21)

  1. Vorrichtung (10) zum Lageanpassen von Indizes (30) in Bezug zu Endlinien (20) in einem transportierten Flächengebilde (14), wobei die Vorrichtung (10) aufweist:
    eine Einrichtung zum Transportieren eines Flächengebildes (14) in einer ersten Richtung;
    eine Einrichtung (32) zum Aufbringen in Abstand zueinander liegender Indizes (30) auf das Flächengebilde (14) in sich vorbestimmt wiederholenden Intervallen mit einer ersten Rate, welche die erste Geschwindigkeit definiert;
    eine Einrichtung (34) zum Eindrücken von Endlinien (20) auf das Flächengebilde (14) mit einer zweiten Rate, welche eine zweite Geschwindigkeit definiert, wobei sich die Endlinien (20) in einer Abstandsbeziehung zu den Indizes (30) befinden; und
    eine Einrichtung (50) zum Einstellen der Abstandsbeziehung zwischen den Indizes (30) und den Endlinien (20) durch Einstellen einer der ersten Geschwindigkeit und der zweiten Geschwindigkeit;
    dadurch gekennzeichnet, daß die Einrichtung zum Transportieren einen Transport des Flächengebildes (14) mit konstanter Geschwindigkeit schafft.
  2. Vorrichtung (10) nach Anspruch 1, in welcher das Flächengebilde (14) in einer ersten Richtung transportiert wird, und in welcher:
    die Einrichtung zum Transportieren des Flächengebildes (14) ein Transportmechanismus ist;
    die Einrichtung (34) zum Eindrücken von Endlinien (20) eine Klinge ist, wobei die Endlinie (20) im wesentlichen rechtwinklig zu der ersten Transportrichtung des Flächengebildes (14) verläuft, wodurch das Flächengebilde (14) einen vorderen und einen hinteren Rand (16, 18) hat, die durch die Endlinien (20) definiert sind;
    wobei die Einrichtung (32) zum Aufbringen der Indizes (30) ein Bauteil ist und das Indiz (30) so bemessen ist, daß dieses innerhalb des vorderen und hinteren Randes (16, 18) liegt und in einer Abstandsbeziehung dazu angeordnet ist, wobei eine von der Komponente und der Klinge relativ zu dem Flächengebilde (14) einstellbar ist, wenn dieses in der ersten Richtung transportiert wird, wodurch der Abstand des Indizes (30) in der ersten Richtung in Bezug zu dem vorderen und dem hinteren Rand (16, 18) eingestellt werden kann, während das Flächengebilde (14) transportiert wird.
  3. Vorrichtung (10) nach Anspruch 1, in welcher die Einrichtung zum Transportieren des Flächengebildes (14) eine drehbare Rolle umfaßt.
  4. Vorrichtung (10) nach Anspruch 1, in welcher die Einrichtung zum Aufbringen der in Abstand zueinander liegenden Indizes (30) einen drehbaren Zylinder umfaßt.
  5. Vorrichtung (10) nach Anspruch 4, in welcher die Einrichtung (32) zum Aufbringen der in Abstand zueinander liegenden Indizes (30) einen Printzylinder umfaßt.
  6. Vorrichtung (10) nach Anspruch 1, in welcher das Flächengebilde (14) zwei Längsränder (28) hat, die den vorderen und den hinteren Rand (16, 18) verbinden, und wobei die Einrichtung (32) zum Aufbringen der in Abstand zueinander liegenden Indizes (30) Indizes (30) aufbringt, die wenigstens neben einem des vorderen Randes (16, 18) und des hinteren Randes (16, 18) und wenigstens einem der Längsränder (28) angeordnet sind.
  7. Vorrichtung (10) nach Anspruch 1, in welcher das Flächengebilde (14) zwei Längsränder (28) hat, welche den vorderen und den hinteren Rand (16, 18) verbinden, und wobei die Einrichtung (32) zum Aufbringen der in Abstand zueinander liegenden Indizes (30) Indizes (30) aufbringt, die jeweils neben dem vorderen Rand, dem hinteren Rand (16, 18) und den beiden Längsrändern (28) angeordnet sind.
  8. Vorrichtung (10) nach Anspruch 1, in welcher die Einrichtung (50) zum Einstellen der Abstandsbeziehung zwischen den Indizes (30) und der Endlinie (20) die Häufigkeit einstellt, mit welcher die Endlinien (20) in das Flächengebilde (14) eingedrückt werden.
  9. Vorrichtung (10) nach Anspruch 8, in welcher die Einrichtung (36) zum Eindrükken der Endlinien (20) eine drehbare Klinge (36) umfaßt, die um eine zentrale Achse mit einer vorbestimmten Winkelgeschwindigkeit angetrieben wird.
  10. Vorrichtung (10) nach Anspruch 9, in welcher die Winkelgeschwindigkeit der drehbaren Klinge (36) eingestellt ist, wodurch die Phase der Indizes (30) in Bezug zu den Endlinien (20) eingestellt wird.
  11. Vorrichtung (10) nach Anspruch 10, in welcher die Einstellung der Winkelgeschwindigkeit in Antwort auf ein Fehlersignal durchgeführt wird, wobei das Fehlersignal die Differenz zwischen dem Abstand der Indizes (30) in Bezug zu den Endlinien (20) bezeichnen, wie diese auf dem Flächengebilde (14) tatsächlich auftritt, und einen gewünschten Abstand der Indizes (30) in Bezug zu den Endlinien (20).
  12. Vorrichtung (10) nach Anspruch 11, in welcher das Fehlersignal von einem Signalvergleicher erzeugt wird, welcher die Position der drehbaren Klinge (36) und der auf das Flächengebilde (14) aufgebrachten Indizes (30) vergleicht.
  13. Vorrichtung (10) nach Anspruch 12, in welcher Signalvergleicher ein erstes und ein zweites Eingangssignal erhält, wobei das erste Eingangssignal durch einen Positionsauflöser (38) erzeugt, der die Position der drehbaren Klinge (36) anzeigt.
  14. Vorrichtung (10) nach Anspruch 10, in welcher das zweite Eingangssignal den Abstand zwischen den Endlinien (20) den Indizes (30) anzeigt.
  15. Vorrichtung (10) nach Anspruch 1, in welcher die Einrichtung (50) zum Einstellen der Abstandsbeziehung zwischen den Indizes und der Endlinie (20) die Häufigkeit einstellt, mit welcher die Indizes (30) auf das Flächengebilde (14) aufgebracht werden.
  16. Vorrichtung (10) nach Anspruch 11, in welcher die Einrichtung (32) zum Aufbringen der Indizes einen drehbaren Zylinder umfaßt, der um eine zentrale Achse mit einer vorbestimmten Winkelgeschwindigkeit angetrieben wird.
  17. Vorrichtung (10) nach Anspruch 12, in welcher die Winkelgeschwindigkeit des drehbaren Zylinders eingestellt wird, wodurch die Phase der Indizes (30) in Bezug zu den Endlinien (20) eingestellt wird.
  18. Vorrichtung (10) nach Anspruch 2, in welcher die Indizes (30) auf das Flächengebilde (14) mit einer vorbestimmten ersten Häufigkeit aufgebracht werden und die Endlinien (20) auf das Flächengebilde (14) mit einer vorbestimmten zweiten Häufigkeit aufgebracht werden, wobei eine der ersten Häufigkeit und der zweiten Häufigkeit eingestellt wird, wodurch der Abstand in Abhängigkeit von der Einstellung einer der ersten und zweiten Häufigkeiten eingestellt wird.
  19. Vorrichtung (10) nach Anspruch 18, in welcher die Klinge (36) drehbar ist und durch einen Motor angetrieben wird und das System zum Eindrücken der Indizes (20) drehbar ist und durch einen Motor angetrieben wird, wobei die erste Frequenz und die zweite Frequenz durch Verändern der Drehgeschwindigkeit eines der Motoren eingestellt wird.
  20. Vorrichtung (10) nach Anspruch 19, ferner mit einer Einrichtung zum Erfassen des Abstandes zwischen den Indizes (30) und den Endlinien (20).
  21. Verfahren zum Lageanpassen von Indizes (30) und Endlinien (20) in einem sich bewegenden Flächengebilde (14), wobei das Verfahren die Schritte umfaßt:
    Transportieren des Flächengebildes (14) in einer ersten Richtung mit einer vorbestimmten ersten Geschwindigkeit;
    Aufbringen von Indizes (30) auf das Flächengebilde (14) von einem Drucker, der in Bezug zu dem Flächengebilde (14) mit einer zweiten Geschwindigkeit bewegbar ist;
    Eindrücken von Endlinien (20) in das Flächengebilde (14) von einer Klinge, die in Bezug zu dem Flächengebilde (14) mit einer dritten Geschwindigkeit bewegbar ist, wobei die Endlinien (20) von den Indizes (30) in einem vorbestimmten Abstand in Abstand liegen, und
    Variieren einer der zweiten oder dritten Geschwindigkeiten, um den vorbestimmten Abstand beizubehalten, und vorzugsweise Variieren der Geschwindigkeit der bewegbaren Klinge;
    gekennzeichnet durch die Tatsache, daß die erste Geschwindigkeit konstant bleibt.
EP97915159A 1996-03-25 1997-03-18 Vorrichtung zur anpassung eines zeichens an eine abschlusslinie in gefördertem bogenmaterial Expired - Lifetime EP0958112B1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US621271 1984-06-15
US62127196A 1996-03-25 1996-03-25
US62126896A 1996-03-25 1996-03-25
US08/621,571 US5802974A (en) 1996-03-25 1996-03-25 Apparatus for sheet having indicia registered with lines of termination
US621268 1996-03-25
US621571 1996-03-25
PCT/US1997/004359 WO1997035695A1 (en) 1996-03-25 1997-03-18 Apparatus for registering indicia with lines of termination in a transported sheet

Publications (2)

Publication Number Publication Date
EP0958112A1 EP0958112A1 (de) 1999-11-24
EP0958112B1 true EP0958112B1 (de) 2002-08-28

Family

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EP97915159A Expired - Lifetime EP0958112B1 (de) 1996-03-25 1997-03-18 Vorrichtung zur anpassung eines zeichens an eine abschlusslinie in gefördertem bogenmaterial

Country Status (14)

Country Link
EP (1) EP0958112B1 (de)
JP (1) JP3217070B2 (de)
CN (1) CN1262403C (de)
AT (1) ATE222843T1 (de)
AU (1) AU2217197A (de)
BR (1) BR9708273A (de)
CA (1) CA2250012C (de)
DE (1) DE69715045T2 (de)
ES (1) ES2180959T3 (de)
HK (1) HK1023962A1 (de)
ID (1) ID16304A (de)
TW (1) TW430634B (de)
WO (1) WO1997035695A1 (de)
ZA (1) ZA972452B (de)

Cited By (1)

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WO2006099881A1 (en) † 2005-03-22 2006-09-28 Sca Hygiene Products Gmbh Method and apparatus of manufacturing a hygiene paper product
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CN114940018A (zh) * 2022-06-06 2022-08-26 宁波兄弟印刷有限公司 一种丝网印刷机

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WO2005049326A1 (en) * 2003-10-30 2005-06-02 Sca Hygiene Products Gmbh Method of manufacturing a hygiene paper product, apparatus for such manufacture and hygiene paper product

Also Published As

Publication number Publication date
AU2217197A (en) 1997-10-17
CN1217682A (zh) 1999-05-26
TW430634B (en) 2001-04-21
ATE222843T1 (de) 2002-09-15
CA2250012A1 (en) 1997-10-02
CA2250012C (en) 2004-03-30
EP0958112A1 (de) 1999-11-24
ZA972452B (en) 1997-09-25
DE69715045T2 (de) 2002-12-19
JPH11506984A (ja) 1999-06-22
DE69715045D1 (de) 2002-10-02
BR9708273A (pt) 1999-08-03
HK1023962A1 (en) 2000-09-29
ID16304A (id) 1997-09-18
CN1262403C (zh) 2006-07-05
ES2180959T3 (es) 2003-02-16
WO1997035695A1 (en) 1997-10-02
JP3217070B2 (ja) 2001-10-09

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