EP0084698A1 - Appareil et méthode pour varier l'emplacement d'une opération effectuée sur un élément allongé mobile - Google Patents

Appareil et méthode pour varier l'emplacement d'une opération effectuée sur un élément allongé mobile Download PDF

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Publication number
EP0084698A1
EP0084698A1 EP82301494A EP82301494A EP0084698A1 EP 0084698 A1 EP0084698 A1 EP 0084698A1 EP 82301494 A EP82301494 A EP 82301494A EP 82301494 A EP82301494 A EP 82301494A EP 0084698 A1 EP0084698 A1 EP 0084698A1
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EP
European Patent Office
Prior art keywords
take
web
feed
sensor
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82301494A
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German (de)
English (en)
Other versions
EP0084698B1 (fr
Inventor
John Henry Morgan
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.)
Morgan John Henry
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Morgan John Henry
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Publication date
Application filed by Morgan John Henry filed Critical Morgan John Henry
Priority to AT82301494T priority Critical patent/ATE22268T1/de
Publication of EP0084698A1 publication Critical patent/EP0084698A1/fr
Application granted granted Critical
Publication of EP0084698B1 publication Critical patent/EP0084698B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/025—Registering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/10—Constitutive elements of driving devices
    • B41P2213/20—Gearings
    • B41P2213/208—Harmonic drive

Definitions

  • the invention relates to apparatus for and method of varying the position of an operation performed on a moving element such as a web of material.
  • the paper web In the field of printing, and particularly in the field of printing matter on a paper web for use in a computer print-out machine, printed matter often has to be appl ied to the web with extreme accuracy.
  • the paper web When printing a pre-processed paper web for use in computer print-out machines, the paper web generally comprises a length of paper which has numerous evenly spaced transverse perforations to define interconnected sheets and which enables the web to be arranged as a concertina-like stack.
  • a computer user requires certain basic printed matter to appear on every sheet of the stack it is essential to ensure that the printed matter is placed in a precise position on each sheet so that the printed matter al igns accurately with the print applied by the computer print-out machine.
  • An object of the present invention is to provide an improved apparatus which reduces the foregoing disadvantages.
  • initial tension wil be appl ied to the element particularly where the element takes the form of a pre-printed paper web. Where such a web has transverse perforations, the initial tension is set below that which will tear the perforations.
  • This is particularly advantageous as there is no need to incorporate strain gauges or mechanical tension sensing means to prevent excessive tension being applied when correcting misregistration.
  • Drive to the take-up means is preferably transmitted through a slipping-type clutch which enables a predetermined working tension to be applied to the element.
  • the working tension will remain substantially constant as the feed rate of the feed means is increased or decreased by the same amount.
  • the feed means includes a feed roller for feeding an element in the form of an elongate web
  • the take-up means includes a take-up roller
  • the means for performing an operation on the element includes printing cylinders between which the web passes with sliding contact to enable a printing operation to be performed on it, the feed and take-up rollers being arranged to increase or decrease the rate at which the web passes between the printing cylinders to vary the position of the web relative to the printing cylinders and thereby varying the position at which print is applied to the web.
  • Means for arranging the web in a predetermined manner may be arranged to receive the element such as the web from the take-up means and may be driven by the said drive means so that it operates at the same rate as the take-up means. In that manner, a web issuing from the take-up means can, say, be folded and stacked at a rate consistent with the feed and take-up rate of the web.
  • the feed means and take-up means are driven by drive means in the form of a motor common to both and the means for performing the operation on the element is driven by a further motor, said means operable in response to said sensor means being arranged to control the relative speeds of the motors.
  • a method cf varying the position of an operation performed on an elongate moving element comprising feeding the element at a desired rate, performing the operation on the fed element, taking up the element on which the operation has been performed, sensing the relative positions of the element and the operation performed thereon, and adjusting the rate of feed and take up simultaneously to move the element relative to the means for performing the operation substantially without varying any tension in the element if the aforesaid relative positions are incorrect.
  • the apparatus of Figures 1 to 3 includes a main frame or bed F carrying a storage hopper or platform 1 for a stack of paper 2-
  • the stack comprises a web W formed with lines of transverse perforations 3 which divide the web into inter-connected sheets 4.
  • the stack is formed by arranging the sheets in concertina fashion.
  • a feed unit 5 comprises a main feed roller 6 and pressure rollers 7, 8 rotatably mounted on the frame F.
  • the feed roller 6 has a toothed pulley 9 at one end which is driven through a toothed belt 10 by a toothed output pulley 12 of an infinitely variable transmission indicated generally at 13.
  • a take-up unit 14 includes a main take-up roller 15 rotatably mounted on the frame F and an associated pressure roller 15a.
  • the roller 15 is driven through a fluid operable slipping-type clutch 16, the torque transmission characteristics of which can be varied by fluid under pressure P fed to the clutch via a control valve 17.
  • the drive to the clutch 16 is described below. From the take-up unit 14 the web W passes to a take-up hopper or platform 18 where a concertina-like stack is formed with the aid of folding means 19.
  • a printing unit 22 comprising the usual platecylinder 23, blanket cylinder 24 and impression cylinder 25.
  • the cylinders are mounted on the frame F, the cylinders 23, 24 preferably being mounted on an axially slidable breach-loading unit (not shown) enabling them to be withdrawn axially to one side cf the impression cyl inder for access.
  • the blanket cylinder 24 has a toothed pulley 26 at one end which is driven by a toothed belt 27 from a main motor 28.
  • a suitable transmission (indicated diagrammatically by line 29) transmits drive from the blanket cylinder 24 is a wheel 30 formed with equi-spaced apertures 32 on a pitch circle coaxial with the wheel.
  • one revolution of the blanket cylinder will result in one revolution of the plate 30 or the ratio may be different.
  • the web is held against the impression cylinder by a pressure roller 31.
  • drive may be transmitted to the wheel 20 from the motor 28 by other transmission means synchronism with the blanket cylinder.
  • a first light sensor 39 is arranged immediately beneath one of two lines of sprocket holes 41 ( Figure 3) extending along margins of the web.
  • the spacing betweencentres of adjacent apertures 32 in the wheel 30 corresponds to the spacing between centres of adjacent sprocket holes e.g. half an inch (12.7mm).
  • a light source 40 is arranged above the web and projects a light beam towards sensor 39.
  • a second light sensor 42 is arranged behind the apert.ured wheel 30 and a second I ight source 143 is arranged to direct a beam of I ight towards the sensor 42 through the apertures so that the beam reaching the sensor 42 will be intermittent during rotation of the wheel 30.
  • Signals from the sensors 39, 42 are fed to the micro-processor 38 which compares the signals and makes any adjustments in web speed necessary to correct misregistration.
  • the apparatus is initially set up so that the web follows the path shown, the web passing around guide rollers 43, 44, 45 and 46.
  • the control valve 17 of the clutch 16 is adjusted so'that with the web in motion, the rotation of the clutch through transmission 34 will rotate the roller 15.
  • the clutch tends to drive the roller 15 so that its peripheral speed would be greater than the web feeding speed.
  • the clutch permits sl ipping to occur so that the peripheral speed of the roller 15 remains the same as the web feeding speed.
  • Such arrangement creates a tension in the web which is constant throughout the web between the feed and take-up rollers 6, 15.
  • positioned relative to the blanket cylinder 25 so that the printed matter will be applied to the sheets 4 in the exact desired position.
  • the size of the blanket cylinder 25 is accurately selected so that it will print the matter on one sheet or a predetermined number of sheets during one revolution as the web moves between the blanket and impression cylinders.
  • the tight sensor 39 and source 40 are then aligned exactly with a sprocket hole 41 on the web and the tight sensor 42 and source 143 are aligned exactly with an aperture in the wheel 30.
  • the micro-processor 38 is arranged so that the signal from the sensor 42 forms a datum with which the signal from sensor 39 will be compared.
  • the variable transmission 13 is adjusted so as to feed the web at the peripheral speed of the blanket cylinder 24. Therefore, initially, the blanket cylinder will print the sheets in the desired position. With the apparatus in motion the print should, in theory, always be applied in the right position on each sheet. However, if the length of each sheet varies sl ightly, as is a common occurrence, the printed matter wi I begin to drift relative to the marginal perforations.
  • the micro-processor is programmed to count the number of apertures 32 passing sensor 42 and to compare that number with the number of sprocket holes 41 passing over the sensor 39. The micro-processor may be programmed to make a comparison, say, every ten apertures.
  • the senor 42 is effectively sensing the rotary position of the blanket cylinder 24 as the wheel 30 is driven directly from it. Therefore the sensors 39, 42 together sense the relative positions of the web and print applied to the web.
  • FIG. 2 A typical drive arrangement for the apparatus is shown in Figure 2 where the main motor 28 drives a primary shaft 47 through a gear box 48.
  • the shaft 47 carries toothed pulleys 49, 50 the former driving the blanket cylinder 24 through belt 27 and the latter driving the toothed input pulley 36 of the variable transmission 13 through the belt 25.
  • the variable transmission is preferably of the type known as a Harmoni c Drive manufactured by Harmonic Drives Inc. of Tokyo Japan. However, other forms of variable transmission such as a variable epicyclic gearing could be used.
  • the input pulley 36 drives the output pulley 12 through an elliptical toothed band (not shown) supported by a bearing incorporating a rotary ratio control member drivable by the servo motor 37 through a gear box 37a.
  • the operation of the servo motor will vary the input speed to output speed ratio infinitely within a set range so that the web W can be transported relative to or at the same speed as the blanket cylinder depending on the signal received from the microprocessor 38.
  • Figure 4 shows a typical working arrangement for the apparatus of Figures 1 to 3 and in Figure 4 parts corresponding to parts in Figures 1 to 3 have the same reference numerals.
  • the bed F carries the piatforms 1 and 18 for the paper web (not shown).
  • the feed unit 5 is arranged in a housing 50 and the paper (not shown) passes over the feed roller 6.
  • the take-up unit 14 is also arranged in a housing 52 and includes the take up roller 15. Pressure rol lers are omitted for clarity.
  • the printing unit 22 is arranged in a housing 53 and the plate cylinder, blanket cylinder and impression cylinder are indicated at 23, 24 and 25.
  • a number of inking rollers indicated generally at 54 are provided in known manner.
  • the apparatus is driven from the motor 28 which drives the primary shaft 47 through gear box 48 as in Figure 2.
  • the servo motor 37 controls the Harmonic Drive unit or other infinitely variable transmission 13 through a gear box 37a.
  • the toothed output pulley 12 of the transmission 13 is connected by a toothed belt 55 to a layshaft 56.
  • the layshaft carries a toothed pulley 57 which is connected by a toothed belt 58 to a toothed pulley 59 rotatably fast with the feed roller 6.
  • the layshaft 56 carries a further toothed pulley 60 which transmits drive through a toothed belt 33 to a toothed pulley 62 on a further layshaft 63.
  • the pulley 62 is rotatably fast with an outer toothed pulley 64, and inner toothed pulleys 65, 66.
  • the pulleys 62, 64, 65 and 66 are freely rotatable on layshaft 63.
  • the pulley 64 is connected via a toothed belt 34 to a toothed pulley 67 for driving clutch 16.
  • the clutch 16 drives take-up roller 15 through toothed belt 16a.
  • the pulley 65 is connected via a toothed belt 68 to a toothed pulley 69 rotatably fast with a shaft 70 carrying the impression cylinder 25.
  • the shaft 70 also carries a toothed pulley 71 drivably connected by a toothed belt 73 to a toothed pulley 72 for driving the numerous inking rollers 54.
  • the pulley 71 is drivably connected to an adjacent toothed pulley 71a, both pulleys being freely rotatable on the shaft.
  • the pulley 71a is driven by a toothed belt 75 from a toothed pulley 75a rotatably fast with shaft 63.
  • the pulley 66 drives gears 74 for the web folding means (not shown in Figure 4) through a toothed belt. It will be seen, therefore, that the feed roller 6, take-up roller 15, impression cylinder 25 and the folding means are all driven from the output of the infinitely variable transmission 13.
  • the primary shaft 47 drives the layshaft 63 through a toothed belt 76.
  • Drive is transmitted from the layshaft by a toothed belt 77 to a gear 78 freely rotatable on the shaft 70.
  • the gear 78 meshes with one of two meshing gears 78a (one only of which is shown) on the plate and blanket cylinders 23 and 24. In that manner the layshaft 63 drives the plate and blanket cylinders.
  • the plate 30 is r( ;atably fast with layshaft 63 and is therefore driven in synchronism with the blanket cylinder.
  • the sensors are omitted for clarity from Figure 4 and the micro- processor 38 will normally be housed conveniently in the bed of the machine.
  • feed and take-up rollers 6 and 15 which transport the web W through a printing unit 22 comprising plate, blanket and impression cylinders 23, 24 and 25.
  • the feed roller ; take up roller and impression cylinder are driven by a first motor 80 through belts 82; 83 , 83a and 84 respectively and the blanket cylinder 24 is driven by a second motor 85 through a belt 86.
  • the motors have respective controllers 89, 90.
  • a slipping-type clutch 87 is provided in the drive to the take up roller 15.
  • a sensor 39 with a light source 40 senses the sprocket holes in web W.
  • the tension may be zero or substantially zero.
  • the web may be of a non-sprocket hole type having marks applied thereto to be picked up by sensor 39.
  • the print unit could be replaced by another type of unit for carrying out some other operation, e.g. scoring or perforating, on a pre-processed web.
  • a sensor may be used which directs a light beam towards the web and then receives the reflected beam. Such a reflected beam will be interrupted by the sprocket holes as the web moves past the sensor and in that way the sprocket holes can be counted.
  • a similar system may be used in place of sensor 42 and light source 143.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Vehicle Body Suspensions (AREA)
EP82301494A 1982-01-26 1982-03-23 Appareil et méthode pour varier l'emplacement d'une opération effectuée sur un élément allongé mobile Expired EP0084698B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82301494T ATE22268T1 (de) 1982-01-26 1982-03-23 Apparat und methode zum variieren der lage einer operation, welche auf einem langen beweglichen element durchgefuehrt wird.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8202112 1982-01-26
GB8202112 1982-01-26

Publications (2)

Publication Number Publication Date
EP0084698A1 true EP0084698A1 (fr) 1983-08-03
EP0084698B1 EP0084698B1 (fr) 1986-09-17

Family

ID=10527872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82301494A Expired EP0084698B1 (fr) 1982-01-26 1982-03-23 Appareil et méthode pour varier l'emplacement d'une opération effectuée sur un élément allongé mobile

Country Status (3)

Country Link
EP (1) EP0084698B1 (fr)
AT (1) ATE22268T1 (fr)
DE (1) DE3273272D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541337A (en) * 1983-05-31 1985-09-17 Fraver S.A. Process and apparatus for continuously treating a web adapted to pass through a computer printer
EP0270163A2 (fr) * 1986-12-05 1988-06-08 Francis Rey Appareil automatique autocentreur de redressement d'une bande continue de tissu, adapté en particulier pour être relié en ligne avec des machines de finissage de tissus ou avec une machine d'impression
FR2623127A1 (fr) * 1987-11-12 1989-05-19 Sarda Jean Claude Dispositif d'alimentation et de reception d'une bande continue destine aux presses a imprimer du type feuille a feuille
EP0464001A2 (fr) * 1990-06-29 1992-01-02 ARICI, Giancarlo Rotative à bobines pour la surimpression
EP1155826A2 (fr) * 1993-12-29 2001-11-21 Maschinenfabrik Wifag Machine rotative d'impression
DE4344896C5 (de) * 1993-12-29 2004-07-29 Maschinenfabrik Wifag Antrieb für Zylinder einer Rollenrotationsdruckmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262116A (en) * 1969-04-21 1972-02-02 Bobst Fils Sa J Inserter and splicer with register control for a preprinted web
GB1399394A (en) * 1971-10-08 1975-07-02 Bobst Fils Sa J Method and apparatus for correcting longitudinal misre gistration in a multistation printing press
GB1540409A (en) * 1975-08-08 1979-02-14 Chambon Ltd Colour registration apparatus for a printing machine
GB2013570A (en) * 1978-01-28 1979-08-15 Ditzel Gmbh Gebr Method for Application of a Coating Material onto a Pattern Carried by a Web and Apparatus for Carrying Out this Method
DE2926448A1 (de) * 1978-06-29 1980-01-10 Moulton Successors Registersteuerung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262116A (en) * 1969-04-21 1972-02-02 Bobst Fils Sa J Inserter and splicer with register control for a preprinted web
GB1399394A (en) * 1971-10-08 1975-07-02 Bobst Fils Sa J Method and apparatus for correcting longitudinal misre gistration in a multistation printing press
GB1540409A (en) * 1975-08-08 1979-02-14 Chambon Ltd Colour registration apparatus for a printing machine
GB2013570A (en) * 1978-01-28 1979-08-15 Ditzel Gmbh Gebr Method for Application of a Coating Material onto a Pattern Carried by a Web and Apparatus for Carrying Out this Method
DE2926448A1 (de) * 1978-06-29 1980-01-10 Moulton Successors Registersteuerung

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541337A (en) * 1983-05-31 1985-09-17 Fraver S.A. Process and apparatus for continuously treating a web adapted to pass through a computer printer
EP0270163A2 (fr) * 1986-12-05 1988-06-08 Francis Rey Appareil automatique autocentreur de redressement d'une bande continue de tissu, adapté en particulier pour être relié en ligne avec des machines de finissage de tissus ou avec une machine d'impression
EP0270163A3 (en) * 1986-12-05 1988-11-23 Francis Rey Automatic, self-centering straightening machine for a continuous fabric, in particular suitable for being coupled in line with textile finishing machines, or with a printing machine
FR2623127A1 (fr) * 1987-11-12 1989-05-19 Sarda Jean Claude Dispositif d'alimentation et de reception d'une bande continue destine aux presses a imprimer du type feuille a feuille
EP0317396A1 (fr) * 1987-11-12 1989-05-24 Jean-Claude Sarda Dispositif d'alimentation et de réception d'une bande continue destiné aux presses à imprimer du type feuille à feuille
EP0464001A2 (fr) * 1990-06-29 1992-01-02 ARICI, Giancarlo Rotative à bobines pour la surimpression
FR2663882A1 (fr) * 1990-06-29 1992-01-03 Arici Giancarlo Rotative a bobines pour la surimpression.
EP0464001A3 (en) * 1990-06-29 1992-09-30 Giancarlo Arici Rotary printing press for overprinting
EP1155826A2 (fr) * 1993-12-29 2001-11-21 Maschinenfabrik Wifag Machine rotative d'impression
EP1155826A3 (fr) * 1993-12-29 2002-06-26 Maschinenfabrik Wifag Machine rotative d'impression
DE4344896C5 (de) * 1993-12-29 2004-07-29 Maschinenfabrik Wifag Antrieb für Zylinder einer Rollenrotationsdruckmaschine
EP0644048B2 (fr) † 1993-12-29 2005-03-23 Maschinenfabrik Wifag Machine d'impression rotative, avec des cylindres porte-blanchet et porte-clichés réunisen groupes de cylindres par paires

Also Published As

Publication number Publication date
ATE22268T1 (de) 1986-10-15
DE3273272D1 (en) 1986-10-23
EP0084698B1 (fr) 1986-09-17

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