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EP4442623A1 - Machine de synchronisation de feuilles - Google Patents

Machine de synchronisation de feuilles Download PDF

Info

Publication number
EP4442623A1
EP4442623A1 EP23382325.1A EP23382325A EP4442623A1 EP 4442623 A1 EP4442623 A1 EP 4442623A1 EP 23382325 A EP23382325 A EP 23382325A EP 4442623 A1 EP4442623 A1 EP 4442623A1
Authority
EP
European Patent Office
Prior art keywords
station
sheets
sheet
machine according
synchronizing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP23382325.1A
Other languages
German (de)
English (en)
Inventor
Ramon Serra Obiol
Jordi Puig Vargas
Jaume Pugès Triguero
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.)
Comercial Industrial Maquinaria Carton Ondulado SL CIMCOSA
Original Assignee
Comercial Industrial Maquinaria Carton Ondulado SL CIMCOSA
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 Comercial Industrial Maquinaria Carton Ondulado SL CIMCOSA filed Critical Comercial Industrial Maquinaria Carton Ondulado SL CIMCOSA
Priority to EP23382325.1A priority Critical patent/EP4442623A1/fr
Priority to ARP240100833A priority patent/AR132321A1/es
Priority to PCT/EP2024/059360 priority patent/WO2024209070A1/fr
Publication of EP4442623A1 publication Critical patent/EP4442623A1/fr
Withdrawn legal-status Critical Current

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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/066—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers the articles resting on rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/16—Feeding articles separated from piles; Feeding articles to machines by pusher, needles, friction, or like devices adapted to feed single articles along a surface or table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/34—Varying the phase of feed relative to the receiving machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/10—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect side register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration
    • 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
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • 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
    • B65H2801/42—Die-cutting

Definitions

  • the present invention relates to a sheet synchronizing machine, in particular, for synchronizing a discrete flow of sheets for further processing, such as printing, die-cutting and/or stacking, on the same line, in particular of printed cardboard sheets, coming from a digital printer.
  • the cardboard sheets that form them are subjected to different processes, such as printing, die-cutting, and stacking for transport.
  • the printing is done to print on the sheets the designs, markings, or information that you want to be visible during the final use of the box.
  • This printing can be done by digital printing or by flexography.
  • folding lines and cut-outs are formed to form the final box according to its design and characteristics.
  • Stacking is carried out to transport a plurality of sheets together, the sheets being loose one on top of the other, each sheet being able to contain different printed and/or die-cut patterns joined together by means of dots, in the form of a mosaic. In this way, each sheet can contain different boxes.
  • the sheets are cycled, i.e., they are always the same distance apart. Normally this distance is the subtraction of the sheet length from the length of the impression cylinder. In digital printers, on the other hand, the distance between sheets can always be the same regardless of the length of the printed sheet.
  • An objective of the present invention is to provide a sheet synchronizing machine that allows a processing of sheets, such as printing, die-cutting and/or stacking, from an uncycled input stream.
  • the dynamic independent sheet synchronizing machine comprises an acceleration station and a synchronizing station.
  • the acceleration station makes it possible to establish, from a minimum or even zero sheet gap, a sufficient gap between the sheets for further processing in the synchronizing station.
  • the acceleration station comprises separate drive elements, e.g., wheel or belt trains, which can vary their speed independently of each other.
  • the appropriate and precise register is set for feeding the sheet to the next processing station (die-cutter, printer, etc.).
  • the stop can enter between two sheets and push the relevant sheet from the rear.
  • the stops contact the sheet from the rear, but do not immobilize the sheet on the belt, so that the sheet can move in the same plane, but in a direction perpendicular to the belt feed to allow adjustment of the lateral register before feeding it into the next processing station.
  • the correction of the lateral register of the sheets is carried out, for example, by means of side plates that move alternately between an open and a closed position.
  • the latter position determines the exact position of the sheet in the direction perpendicular to the feed direction.
  • the longitudinal and lateral registers are corrected before the sheet is fed to the next processing station, thus obtaining a perfect synchronization of the sheet flow, regardless of the characteristics of this flow at the inlet, such as: initial separation between sheets, sheet dimensions, longitudinal and lateral registers, etc.
  • the system is robust and can tolerate slight variations or deviations from the nominal values of these quantities without affecting the next processing station, which will always receive them perfectly positioned and synchronized.
  • the independent dynamic sheet synchronizing machine further comprises a rotary die cutting station and a stacking and stack removal station downstream of the synchronization station, so that die cutting and/or stacking of sheets can be performed with a single processing line.
  • the rotary die cutting station comprises:
  • the first cylinder and the second cylinder are rotatable about a central axis, which is equidistant from both cylinders.
  • the stacking and stack removal station comprises supports for supporting a second stack of sheets on top of a first stack of sheets, allowing more than one stack of sheets to be stacked and ejected continuously without waiting.
  • Said supports are advantageously movable between a standby position and a use position, in which use position the sheets are stacked on the supports, and said supports are also movable between an extended position and a retracted position.
  • the stacking and removal station also preferably comprises wheels that move the sheets into a stacking position, pushers that push the sheets away from the wheels, and a base that is movable, on which a stack of sheets is placed.
  • the sheet synchronizing machine according to the present invention may also comprise:
  • Figure 1 is an elevation view of the sheet synchronizing machine according to a preferred embodiment of the present invention.
  • the machine according to the embodiment depicted comprises a receiving station 1, where already printed sheets, e.g., cardboard sheets printed by a digital printer, are received.
  • a receiving station 1 where already printed sheets, e.g., cardboard sheets printed by a digital printer, are received.
  • this receiving station 1 the sheets are checked for compliance with the quality requirements, so that the sheets that do not meet the quality requirements are deposited in a container 11 via a trap door 12.
  • this receiving station 11 also includes a sample tray 13, where one or more films can be deposited.
  • the machine according to the present invention comprises an acceleration station 2, in which a gap is created between the sheets, and subsequently the sheets reach a synchronization station 3.
  • the acceleration station 2 comprises a plurality of displacement elements 21, such as wheel trains or belts
  • the synchronization station 3 comprises belts 31 with stops 32 and positioning plates 33.
  • acceleration station 2 and synchronization station 3 The operation of acceleration station 2 and synchronization station 3 is explained with the help of figures 4 to 12 .
  • Figure 4 shows acceleration stations 2 and synchronization stations 3 with sheets 7 located therein and cylinders 41, 43 of a die station 4 which will be described later.
  • Figure 5 shows that the sheets 7 have advanced slightly, with the first sheet being inserted between the cylinders 41, 43, and the stop 32 being placed between the two sheets between the acceleration station 2 and the synchronization station 3.
  • the plan view in this figure shows the difference in separation between the sheets 7.
  • the stop 32 is located between the two sheets 7 but is not yet in contact with either of them.
  • the stop 32 contacts the sheet 7 on the back of the belt 31 and synchronization begins.
  • the sheet 7 is pushed by the stop 32 for synchronization with the rear station, in this case the die cutting station 4, and the space between sheets is increasing, as can be seen in the plan view of this figure and in figure 9 .
  • the sheets 7 are advancing along the acceleration station 2 and synchronization station 3.
  • figure 12 shows the velocities of the displacement elements 21 of the acceleration station 2, namely the initial velocity, v 0 , the velocity, v, during synchronization and the acceleration, a.
  • the machine comprises a die-cutting station 4, in which the die-cutting of the sheet can be carried out. It should be noted that, although the sheets pass through this die-cutting station 4, they can, if desired, pass through it without being die-cut, for subsequent stacking, as will be explained below.
  • the die-cutting station 4 comprises a first cylinder 41, a second cylinder 42 and a complementary cylinder 43, whereby the first and second cylinders 41, 42 can be placed in an in-use position or in a standby position.
  • the first cylinder 41 In the position shown in figure 1 , the first cylinder 41 is in the use position and performs the die cutting together with the complementary cylinder 43, passing the sheet to be die cut between them.
  • the second cylinder 42 is in the standby position and does not act during die-cutting, being below the first cylinder 41 and separated from it in figure 1 .
  • the first cylinder 41 and the second cylinder 42 are rotatable with respect to a central axis 44, which is located equidistant with respect to both cylinders 41, 42, as can be seen in figure 1 .
  • this die when a die is to be changed, this die is placed in the second cylinder 42, and is moved from the standby position to the working position by rotating both cylinders 41, 42 around the central axis 44.
  • This die-cutting station 4 also comprises a waste removal chute 44, through which the waste material from the die-cutting process is removed.
  • the machine comprises a vibration station 5, comprising vibrating belts 51, on which the sheets coming out of the die cutting station 4 are cleaned.
  • the machine comprises a stacking and ejection station 6, where the sheets 7 are ejected, either individually or grouped in stacks or bundles.
  • the ejection process is explained with the aid of figures 13 to 17 .
  • the stacking and ejection station 6 comprises wheels 61, which transport the sheet 7 that has left the vibration station 5.
  • the sheet 7 stops ( Figure 14 ) and then the sheet 7 is separated from the wheels 61 by pushers 62, which can be moved between a waiting position and a pushing position, in which movement they push the sheet 7 downwards, as can be seen in Figure 15 .
  • the sheet 7 falls onto a stack of sheets 7 that have been previously placed, as shown in figure 16 , or onto a base or conveyor belt 63 if it is the first sheet.
  • the pushers 62 return to their standby position, i.e., they rise according to the figures, to act on the next sheet 7, as shown in figure 17 .
  • the stack of sheets 7 can be ejected from the stacking and ejection station 6 by means of a conventional ejection element, not shown in the figures. Preferably, this is done by pushing the stack of sheets 7 from its shorter side, if the sheets are rectangular.
  • the ejection would be forward, i.e., according to an axis perpendicular to the figures.
  • the stacking and ejection process can advantageously be carried out continuously and without interruption, as can be seen in figures 18 to 23 , which will be described below.
  • the transport of the sheet 7 is also carried out by the wheels 61, and once in the desired position, the sheet 7 is separated from the wheels 61 by means of the pushers 62, as explained above.
  • the stacking and ejection station 6 comprises supports 64, which are preferably in the form of rods.
  • These supports 64 serve to support a sheet 7 or a stack of sheets on a lower stack of sheets, so that an upper stack can be formed on a lower stack, the two stacks being separated from each other.
  • the supports 64 are movable between a standby position, shown in Figures 13 to 17 , and a use position, shown in Figure 18 , in which it is lowered relative to the standby position, and between an extended position, in which it may be in the use position or in the standby position, and a retracted or withdrawn position, which is explained later.
  • the base 63 is lowered to eject the stack of sheets on it, and the supports 64 are in the position of use.
  • sheets 7 are placed on the supports 64, as shown in figure 19 .
  • the positioning of the sheets 7 is carried out in the same way as explained above for the formation of a stack of sheets.
  • the stack of sheets 7 is removed, in a direction perpendicular to figure 20 , and at the same time a new sheet 7 is stacked on top of the upper stack.
  • the base 63 is raised again, as shown in figure 21 , until the base 63 is at the same height as the supports 64, at which point the supports 64 retract, i.e., move in a direction perpendicular to the figure, so that the stack of sheets 7 is supported on the base 63, as shown in figure 22 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Advancing Webs (AREA)
EP23382325.1A 2023-04-05 2023-04-05 Machine de synchronisation de feuilles Withdrawn EP4442623A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP23382325.1A EP4442623A1 (fr) 2023-04-05 2023-04-05 Machine de synchronisation de feuilles
ARP240100833A AR132321A1 (es) 2023-04-05 2024-04-05 Máquina de sincronización de láminas
PCT/EP2024/059360 WO2024209070A1 (fr) 2023-04-05 2024-04-05 Machine de synchronisation de feuilles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23382325.1A EP4442623A1 (fr) 2023-04-05 2023-04-05 Machine de synchronisation de feuilles

Publications (1)

Publication Number Publication Date
EP4442623A1 true EP4442623A1 (fr) 2024-10-09

Family

ID=86657205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23382325.1A Withdrawn EP4442623A1 (fr) 2023-04-05 2023-04-05 Machine de synchronisation de feuilles

Country Status (3)

Country Link
EP (1) EP4442623A1 (fr)
AR (1) AR132321A1 (fr)
WO (1) WO2024209070A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731046B1 (fr) * 1995-03-07 2000-04-26 Brehmer-Buchbindereimaschinen GmbH Dispositif pour synchroniser l'alimentation de feuilles
DE102020102451A1 (de) * 2020-01-31 2021-08-05 Koenig & Bauer Ag Bearbeitungsmaschine zur Bearbeitung eines bogenförmigen Substrats
DE102021107850A1 (de) * 2021-03-29 2022-09-29 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit Bogentransporteinrichtung und Verfahren zum Bogentransport

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0731046B1 (fr) * 1995-03-07 2000-04-26 Brehmer-Buchbindereimaschinen GmbH Dispositif pour synchroniser l'alimentation de feuilles
DE102020102451A1 (de) * 2020-01-31 2021-08-05 Koenig & Bauer Ag Bearbeitungsmaschine zur Bearbeitung eines bogenförmigen Substrats
DE102021107850A1 (de) * 2021-03-29 2022-09-29 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit Bogentransporteinrichtung und Verfahren zum Bogentransport

Also Published As

Publication number Publication date
WO2024209070A1 (fr) 2024-10-10
AR132321A1 (es) 2025-06-18

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