WO2023227995A1 - Machine d'enroulement pour substrats imprimés et procédé de commande associé - Google Patents

Machine d'enroulement pour substrats imprimés et procédé de commande associé Download PDF

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Publication number
WO2023227995A1
WO2023227995A1 PCT/IB2023/054916 IB2023054916W WO2023227995A1 WO 2023227995 A1 WO2023227995 A1 WO 2023227995A1 IB 2023054916 W IB2023054916 W IB 2023054916W WO 2023227995 A1 WO2023227995 A1 WO 2023227995A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
printed substrate
unit
machine
printed
Prior art date
Application number
PCT/IB2023/054916
Other languages
English (en)
Inventor
Michele Alberto
Alessio CHEYNET
Original Assignee
Fotoba International S.R.L.
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 Fotoba International S.R.L. filed Critical Fotoba International S.R.L.
Publication of WO2023227995A1 publication Critical patent/WO2023227995A1/fr

Links

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
    • B65H23/195—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations
    • 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
    • B65H23/16—Registering, tensioning, smoothing or guiding webs longitudinally by weighted or spring-pressed movable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1131—Size of sheets
    • B65H2701/11312—Size of sheets large formats, i.e. above A3
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/15—Digital printing machines

Definitions

  • the present disclosure relates to machines for rolling up printed matter and more particularly to a machine for rolling up printed substrates onto a rigid roll, such as for example large format and/or continuous sheets of paper, as they exit a printer, as well as a related control method.
  • Various machines are known for rolling up on a rigid roll, for example a roll of cardboard, a substrate in the form of a continuous sheet. Such machines are used for example for the production of multiple copies of posters or other paper prints, which are reproduced in series in a continuous manner on a continuous support (for example a roll of paper) supplied to a printer. As printing progresses, a continuous support printed on at least one side comes out of the printer. This printed support must be rolled up into a roll to allow it to pass through other finishing processes before sending it to an automatic cutter, which cuts the printed media to separate individual posters or prints.
  • this machine has an intermediate unit 2, comprising at least a second roller 8 with a mobile axis mounted on a movable support 9 of the machine, in which the second roller 8 is configured to receive the printed substrate 6 and to drag it simultaneously in an direction of advancement A, towards the roll on which the reel is wound and in a direction P perpendicular' to the direction of advancement A, and in which the movable support 9 it is configured to translate perpendicularly to the movable axis of the second roller 8 to increase/reduce a length of an overall path of the printed substrate 6 from the printer to the reel on which it is rolled.
  • Figure 1 is an overall view of a rolling machine according to a preferred embodiment of the invention.
  • Figure 2 is a detail view of the input unit of the machine of figure 1.
  • Figure 3 is a detail view' of the intermediate unit of the machine of figure 1 .
  • Figure 4 is a detail view of the outlet unit and the rewind unit of the machine of figure 1.
  • Figure 5 shows the rolling machine of Figure 1 with the first controlled stop element raised by the first roller and with the second controlled stop element pressed against the third roller.
  • Figure 6 show's the rolling machine of Figure 1 with the first controlled stop element pressed against the first roller and with the second controlled stop element pressed against the third roller.
  • Figure 7 shows the rolling machine of Figure 1 with the first controlled stop element pressed against the first roller and with the second controlled stop element raised by the third roller.
  • a rolling machine for printed substrates of this disclosure is composed of a succession of different units aligned according to a direction of advancement A, which in the figures is a horizontal direction. More precisely, a rolling machine comprises an input unit 1, an intermediate unit 2, an output unit 3, and a rewind unit 12, in which the three units 1, 2, 3 are governed by a microprocessor unit (not shown in the figures) which manages the various electromechanical elements present in the machine.
  • the input unit 1 has at least one first roller 4 with a fixed axis mounted on the frame 5 of the machine.
  • the first roller 4 is configured to receive a printed substrate 6 directly at the outlet of a printer S and is configured to drag the printed substrate 6 in the direction of advancement A, as shown in figure 2.
  • the input unit 1 there is also a first controlled stop element 7 which is configured to block the printed substrate 6 against the first roller 4 to prevent it from advancing, or to allow the printed substrate 6 to advance by sliding over the first roller 4.
  • the intermediate unit 2, illustrated in figure 3, comprises at least a second roller 8, this time with a mobile axis, which is mounted on a movable support 9 of the rolling machine.
  • the second roller 8 is configured to receive the printed substrate 6 from the input unit 1 and to drag the printed substrate 6 simultaneously in the direction of advancement A (horizontal) and in a perpendicular direction P (vertical) to the direction of advancement A.
  • the printed substrate 6 which runs from the first roller 4 to the second roller 8 does not follow the shortest route to reach the end of the rolling machine, but in general undergoes a "deviation" in the perpendicular direction P to the direction of advancement A.
  • the output unit 3 which, as shown in figure 4, comprises a third roller 10 which has its axis of rotation fixed, mounted on the frame 5.
  • the third roller 10 drags the printed substrate 6 in the direction of advancement A.
  • the output unit 3 has its own controlled stop element 11 configured to block the printed substrate 6 against the third roller 10, so to prevent the printed substrate 6 from advancing, or to allow the printed substrate 6 to be dragged by the third roller 10 towards the final part of the rolling machine.
  • the rolling machine Downstream of the outlet unit 3 in the forward direction A, the rolling machine comprises a rewind unit 12 also mounted on the frame 5 of the machine.
  • the rewind unit 12 is configured to rewind the printed substrate 6 proceeding from the output unit 3 and comprises a motorized shaft 13 configured to be inserted into a rigid roll, such as a roll of cardboard, which is rotated such that the printed substrate 6 is rolled up on it.
  • the various units 1, 2, 3, 12 are arranged along the direction of advancement A of the rolling machine, from the input unit 1 to the rewdnd unit 12.
  • the intermediate unit 2 has the movable support 9 which allows at least the second roller 8 to move at least partially in the direction P perpendicular to the direction of advancement A and perpendicular to the movable axis of the second roller 8, so as to increase or reduce an overall distance of the second roller 8 with respect to the first roller 4 and the third roller 10, to increase or reduce an overall path of the printed substrate 6 which goes from the first roller 4 to the third roller 10.
  • the intermediate unit 2 also comprises a fourth transmission roller 14 with a fixed axis, mounted on the frame 5 of the machine, configured to receive the printed substrate 6 from the second roller 8, as well as a fifth roller 15 with a mobile axis, also mounted on the movable support 9 like the second roller 8, also configured to translate perpendicularly to its mobile axis.
  • a fourth transmission roller 14 with a fixed axis mounted on the frame 5 of the machine, configured to receive the printed substrate 6 from the second roller 8, as well as a fifth roller 15 with a mobile axis, also mounted on the movable support 9 like the second roller 8, also configured to translate perpendicularly to its mobile axis.
  • the fifth roller 15 is configured to receive the printed substrate 6 from the fourth roller 14 with a fixed axis and to drag it simultaneously in the forward direction A and in the direction P perpendicular thereto, thanks to the movement of the movable support 9 on which the fifth roller 15 is mounted.
  • the third roller 10 with fixed axis of the output unit 3 receives the printed substrate 6 not directly from the second roller 8, but from the fifth roller 15 with mobile axis.
  • the output unit 3 comprises a sixth idle roller 16 with a fixed axis mounted on the frame 5 of the machine and configured to receive the printed substrate 6 from the third roller 10.
  • the winding unit 12 it is configured to rewind the printed substrate 6 which is supplied by the sixth idle roller 16 instead of by the third roller 10.
  • the microprocessor unit not shown in the figures is configured to control the controlled stop element 7 of the input unit 1 so as to block the printed substrate 6 by squeezing it against the first roller 4 when the printed substrate 6 is to be stretched. In this way, the printed substrate 6 is not pulled by the intermediate unit 2 and this prevents the support 6 from moving while the printing is in progress, which would lead to a qualitatively unacceptable printing.
  • the rewind unit 12 can continue to rewind the printed substrate 6 because the movable support 9 of the intermediate unit 2 is moved in the perpendicular direction P so as to shorten the overall path of the printed substrate 6 from the first roller 4 to the rewind unit 12.
  • the controlled stop element 7 is configured so as not to block the printed substrate 6 anymore, but to allow it to be dragged from the first roller 4. If instead for any reason the rewinding of the printed substrate 6 on the rigid roll in the rewind unit 12 should be stopped, then the second controlled stop element 11 is configured so as to press onto the printed substrate 6 to block it against the third roller 10 and thus maintain a tension. In this circumstance, the movable support 9 of the intermediate unit 2 is lowered along the perpendicular direction P so as to increase the overall path of the printed substrate 6 from the first roller 4 of the input unit 1 to the third roller 10 of the output unit 3.
  • each one of the controlled stop elements 7 and 11 comprises a respective movable bar configured to be pressed on the printed substrate 6 respectively against the first roller 4 and against the third roller 10, when it is desired to prevent the printed substrate 6 from advancing, and to be moved away respectively from the first roller 4 and from the third roller 10 when one wishes instead to allow the printed substrate 6 to advance in the forward direction A towards the rewind unit 12.
  • the respective movable bars of the controlled stop elements 7, 11 are mounted on respective arms 17, 18 hinged to the frame 5 of the rolling machine.
  • the movable support 9 of the intermediate unit 2 is made in the form of an arm 19 hinged to the frame 5 of the machine so that, when the hinged arm 19 rotates, the mobile axis of the second roller 8 and, if present, also of the fifth roller 15, moves at least partially along the perpendicular direction P so as to increase or reduce the overall path that the printed substrate 6 takes inside the intermediate unit 2.
  • the movable support 9 can be a part of the rolling machine which moves along the perpendicular direction P with an upward or downward movement.
  • all the rollers (or roller) located in the intermediate unit 2 are non-driven idle rollers.
  • the movable support 9 can be moved/counterbalanced by an electromechanical actuator (not shown in the figure), in turn controlled by the microprocessor unit which also controls the controlled stop elements 7, 11.
  • the winding machine of this disclosure allows to rewind any type of printed support without exerting any tension on the support itself during the printing phase, while still maintaining a good rewinding tension of the reel and a satisfactory lateral alignment. This excellent result is obtained by controlling the described rolling machine in the following manner.
  • the controlled stop elements 7, 11 are raises, then the printed substrate passes over the rollers of input unit 1, through the rollers of intermediate unit 2 and of output unit 3 and the printed support 6 is fixed to the rigid roll inserted on the motorized shaft 13 of the rewind unit 12.
  • the printed support 6 is blocked against the third roller 10 by lowering the second controlled stop element 11, then the movable support 9 is lowered so as to increase the length of the overall path of the printed substrate 6 from the first roller 4 to the third roller 10, as illustrated in figure 5.
  • the motorized shaft 13 of the rewind unit 12 is stationary because the printed substrate 6 is stopped against the third roller 10, and the movable support 9, by lowering, begins to feed the intermediate unit 2 and then to tense the substrate.
  • the substrate is locked against the first roller 4 through the first controlled stop element 7, as shown in figure 6.
  • the input unit 1, the intermediate unit 2 and the output unit 3 are separate and this makes possible to avoid pulling the printed substrate 6 from the printer S, which can therefore continue printing without tension being applied to the substrate on the printing plane, and the part of printed substrate 6 which goes from the third roller 10 to the winding unit 12 is kept taut.
  • the movable support 9 thanks to the fact that it can move at least partially in the perpendicular direction P and under the action of its own weight, tenses the printed substrate 6 which goes from the first roller 4 to the third roller 10.
  • the microprocessor unit of the rolling machine controls the second element 11 so as to allow the printed substrate 6 to advance by sliding on the third roller 10, as shown in the figure 7.
  • the printed substrate 6 is then wound with a desired tension which is not transmitted to the printing plane of the printer S because the first controlled stop element 7 holds the printed substrate 6 still by pressing it against the first roller 4.
  • the movable support 9 moves at least partially along the perpendicular direction P to the direction of advancement A so as to reduce the length of the overall path of the printed substrate from the first roller 4 to the third roller 10.
  • the microprocessor unit commands the second controlled stop element 11 (figure 6) so as to keep under tension the portion of printed substrate 6 which goes from the third roller 10 to the rewind unit 12.
  • the first element 7 is then actuated with a stop command so that the printed substrate 6, which has come out of the printer S while the rewind unit 12 was rolling it up on the reel, can slide on the first roller 4 and enter the intermediate unit 2, as illustrated in figure 5.
  • the movable support 9 will move at least partially along the perpendicular direction P so as to increase the length of the overall path of the printed substrate 6 from the first roller 4 to the third roller 10.
  • the machine waits for the intervention of an operator to roll up the final part of the support and to remove the reel from the motorized shaft 13.
  • the motorized shaft 13 is a shaft of the type with expandable strips, on which it is possible to insert a rigid roll, for example of cardboard, which becomes integral with the motorized shaft 13 thanks to the expansion of the strips.
  • the printed substrate 6 is taut in the desired way (figures 6 and 7) thanks to the weight of the movable support 9 itself.
  • the weight of the movable support 9 possibly counterbalanced by an electromechanical actuator also controlled by the microprocessor unit, it will be possible to adjust the mechanical tension applied to the printed support 6 to be rolled up and it will also be possible to control the movement speed of the movable support 9 in the perpendicular direction P, which in the embodiment illustrated in the figures is a descent speed, so that the printed support 6 enters the intermediate unit 2 without generating unacceptable jerks on the support part in the printing plane of the printer S.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

Cette divulgation concerne une machine d'enroulement appropriée pour enrouler un support imprimé continu, même de grande longueur, qui comporte une unité intermédiaire (2), comprenant au moins un second rouleau (8) doté d'un axe mobile monté sur un support mobile (9) de la machine, le second rouleau (8) étant conçu pour recevoir le substrat imprimé (6) et pour le tirer simultanément dans un sens d'avancement (A), vers le rouleau sur lequel la bobine est enroulée et dans une direction (P) perpendiculaire au sens d'avancement (A), et dans lequel le support mobile (9) est conçu pour se déplacer perpendiculairement à l'axe mobile du second rouleau (8) pour augmenter/réduire une longueur d'un trajet global du substrat imprimé (6) de l'imprimante vers la bobine sur laquelle il est enroulé. Est également divulgué un procédé de commande associé d'une telle machine d'enroulement.
PCT/IB2023/054916 2022-05-26 2023-05-12 Machine d'enroulement pour substrats imprimés et procédé de commande associé WO2023227995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102022000011000 2022-05-26
IT102022000011000A IT202200011000A1 (it) 2022-05-26 2022-05-26 Macchina arrotolatrice per substrati stampati e relativo metodo di controllo

Publications (1)

Publication Number Publication Date
WO2023227995A1 true WO2023227995A1 (fr) 2023-11-30

Family

ID=82942938

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2023/054916 WO2023227995A1 (fr) 2022-05-26 2023-05-12 Machine d'enroulement pour substrats imprimés et procédé de commande associé

Country Status (2)

Country Link
IT (1) IT202200011000A1 (fr)
WO (1) WO2023227995A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070079713A1 (en) * 2004-11-30 2007-04-12 Kababushiki Kaisha Sato Printing paper winding device
EP3088193A1 (fr) * 2015-04-27 2016-11-02 Oki Data Corporation Dispositif d'enroulement de support
US20160332836A1 (en) * 2015-05-12 2016-11-17 Oki Data Corporation Medium winding device and method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070079713A1 (en) * 2004-11-30 2007-04-12 Kababushiki Kaisha Sato Printing paper winding device
EP3088193A1 (fr) * 2015-04-27 2016-11-02 Oki Data Corporation Dispositif d'enroulement de support
US20160332836A1 (en) * 2015-05-12 2016-11-17 Oki Data Corporation Medium winding device and method thereof

Also Published As

Publication number Publication date
IT202200011000A1 (it) 2023-11-26

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