EP4144677B1 - Dispositif et procédé de transport de feuilles selon une position définie - Google Patents

Dispositif et procédé de transport de feuilles selon une position définie

Info

Publication number
EP4144677B1
EP4144677B1 EP22203800.2A EP22203800A EP4144677B1 EP 4144677 B1 EP4144677 B1 EP 4144677B1 EP 22203800 A EP22203800 A EP 22203800A EP 4144677 B1 EP4144677 B1 EP 4144677B1
Authority
EP
European Patent Office
Prior art keywords
suction
sheets
shingling
sheet
braking
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.)
Active
Application number
EP22203800.2A
Other languages
German (de)
English (en)
Other versions
EP4144677A1 (fr
EP4144677C0 (fr
Inventor
Andreas Schilling
Hansjörg Klein
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.)
BW Papersystems Stuttgart GmbH
Original Assignee
BW Papersystems Stuttgart GmbH
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
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Application filed by BW Papersystems Stuttgart GmbH filed Critical BW Papersystems Stuttgart GmbH
Publication of EP4144677A1 publication Critical patent/EP4144677A1/fr
Application granted granted Critical
Publication of EP4144677B1 publication Critical patent/EP4144677B1/fr
Publication of EP4144677C0 publication Critical patent/EP4144677C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B65H29/686—Pneumatic brakes
    • 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
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6636—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for underlapping articles
    • 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
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6654—Advancing articles in overlapping streams changing the overlapping figure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • B26D2007/322—Means for performing other operations combined with cutting for conveying or stacking cut product the cut products being sheets, e.g. sheets of paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44732—Belts, endless moving elements on which the material is in surface contact transporting articles in overlapping stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/65—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel
    • B65H2404/651—Other elements in face contact with handled material rotating around an axis parallel to face of material and perpendicular to transport direction, e.g. star wheel having at least one element, e.g. stacker/inverter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/323—Overhead suction belt, i.e. holding material against gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/11—Length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/324—Removability or inter-changeability of machine parts, e.g. for maintenance
    • 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/242—Suction bands or belts
    • 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
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • 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
    • B65H29/68—Reducing the speed of articles as they advance
    • 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
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile

Definitions

  • the invention relates to a method for forming a shingle stream of overlapping sheets, in particular sheets of film, paper, or cardboard, and further in particular for forming a shingle stream of individual sheets cut from a material strip with a cross cutter, wherein individual sheets are transported to a shingle device and partially overlapped to generate a shingle stream, and wherein the shingle sheets are connected to a braking device downstream of the transport direction of the sheets.
  • the braking device following the sliding mechanism is braked.
  • the suction belt rotates at a lower speed than the high-speed conveyor belts that transport the sheets from the cross-cutting unit. The movement is thus slowed down when the trailing edge of the bow is pressed by the lifting shaft against the suction belt positioned above it and held in place by it.
  • the shingle mechanism acts as the first, rear braking unit.
  • a braking device is arranged downstream of the shearing mechanism in the direction of transport of the shear flow, serving as a second, front braking unit.
  • a braking device is found, for example, in the DE 38 12 685 A1
  • the braking device can include at least one so-called nip roller, which, together with a conveyor belt, another roller, or a cylinder, forms a braking gap.
  • the distance between the braking device and the shing device is adjusted so that the leading edge of a sheet preferably enters the braking gap of the braking device and is decelerated when the rear section of the sheet, in particular the trailing edge, is pressed against the suction belt by the lifting shaft of the shing device.
  • the sheets are braked at approximately the same time at their leading and trailing edges.
  • sagging of the sheets can occur, whereby a sagging leading sheet can impede the forward movement of a following sheet. This can lead to problems with the positioning accuracy of the trailing sheets at the braking gap.
  • the bows are attracted to the suction band, held, and tightened or stretched.
  • the EP 0 503 531 A1 Disclosing a device for forming a sheath stream, the device includes a holding mechanism arranged above a belt assembly.
  • the belt assembly comprises a plurality of suction belts, each associated with a suction channel.
  • the high-profile section is provided with a continuous suction opening in the region of its upper wall.
  • the object of the present invention is to provide a device and a method of the type mentioned above, which enable a precise or defined entry of a trailing arc into the braking device within the arc stream. Furthermore, damage caused by an imprecise entry of the arcs into the braking device should be reliably prevented, even at high transport speeds.
  • a suction section preferably formed below the transport plane of the sheets, is provided in the area between the shearing device and the braking device for transporting the leading edge of a sheet trailing in the shear stream into the braking device. Accordingly, in the method according to the invention, the trailing sheets of a shear stream are transported into the braking device, preferably from below, by means of suction.
  • the invention is based on the fundamental idea of guiding the leading edges of the following arcs to the braking device in a defined manner by means of a suction in the area between the shearing device and the braking device.
  • the leading edge of a trailing arc is thereby moved at least section by section relative to a leading arc, whereby the leading edge of the arc where it is sucked in from below during an undercutting and is located below a leading arc.
  • the invention significantly increases the positional accuracy of the leading edge and thus of the entire arc.
  • the invention also prevents damage to the arc at the braking point, which can be caused by positional inaccuracies of the leading edge.
  • At least one suction device is provided.
  • the suction device can interact with at least one suction belt that moves in the transport direction and serves to transport the sheets further after they have passed the shingle device.
  • the negative pressure generated by the suction device is designed such that at least the leading edge or a portion of the leading edge of a sheet is held in place so that the sheet is transported in a desired position with precise positioning.
  • a sheet whose leading edge enters the suction area is drawn in, at least in the area of the leading edge, and thus transported in a defined position in the direction of sheet transport.
  • the leading edge of the sheet is fixed to at least one suction belt or conveyor belt in such a way that the leading edge of the sheet does not detach during transport. For this reason, the leading edge of the sheet can be transported into a braking gap of the braking device without damage.
  • the trailing edge of the sheet can be pressed against a suction belt of the shing device by a beater shaft simultaneously with the entry of the leading edge into the braking device.
  • the trailing edge of the sheet is then held up by the suction belt of the shing device and simultaneously braked in the area of the leading and trailing edges of the sheet.
  • the trailing sheet can remain on the fast-moving conveyor, with at least the area of its leading edge entering the suction area.
  • the trailing arc is conveyed at a higher speed relative to the leading arc, maintaining a defined position in the arc transport direction below the leading arc towards the braking device. This prevents the leading edge of the arc from detaching from the intake section.
  • the trailing arc can thus be conveyed below the leading arc towards the braking device without interference or collision. This achieves a subdivision of the arc flow.
  • An additional intake section is provided between the cross cutter and the shingle unit.
  • the intake section between the shingle unit and the braking unit, as well as the additional intake section, are configured with the same intake unit or with several separate intake units.
  • the additional intake section serves to transport the sheets from the cross cutter to the shingle unit in a defined manner and in a desired position. This ensures a high degree of positional accuracy for the sheets, which is necessary because both the cross cutter and the shingling unit must operate in sync with the downstream processing machines. Due to this synchronization, it is crucial that the leading edge of the sheet occupies a defined position at all times. This positional accuracy, of course, applies to the entire sheet.
  • the suction section between the scoping device and the braking device, as well as the subsequent suction section in the area of the scoping device are interrupted. Between the suction section between the scoping device and the braking device and the subsequent suction section, there is then an area in the transport plane of the sheets where no negative pressure or a significantly lower negative pressure is generated. This is particularly advantageous when the trailing edge of the sheet is lifted by means of a beater shaft. In this way, the lifting of the trailing edge of a sheet is facilitated, since no or a significantly reduced suction force acts on the trailing edge of the sheet during this lift.
  • the suction section is designed such that the sheet is drawn in, at least in the area of the leading edge, and conveyed in a defined position in the transport direction, both during and after the trailing edge of the sheet is gripped by the beater shaft and pressed against the suction belt of the scoping device above it. Since no or a significantly reduced suction force acts on the sheet in the area of the beater shaft of the scoping device, the stresses experienced by a sheet during the lift are reduced. A strong suction effect on the trailing edge of a bow during the upward stroke could cause the bow to be damaged or to slip out of its defined position during the upward stroke.
  • the pressure level in the intake section between the shingle device of the braking unit is less reduced than in the further intake section between the cross cutter and the shingle device.
  • “Less reduced” in this context means that the pressure difference between the vacuum generated in the intake section between the shingle device and the braking unit and the ambient pressure is less pronounced than in the further intake section. This results in the sheet being pulled in with a high force in the area between the cross cutter and the shingle device to achieve high positional accuracy.
  • the sheet, or at least its leading edge is attracted less strongly.
  • the different vacuum levels on either side of the shingling device enable precise and rapid sheet transport from the cross cutter to the braking device.
  • the pressure reduction can also be significantly higher, ranging from 0.5 to 10 mbar, preferably between 1 and 5 mbar, and particularly down to 2 mbar, relative to ambient pressure.
  • a pressure reduction advantageously ensures that the leading edge of the sheet, and thus the entire sheet, can be transported in a defined position.
  • the pressure drop in the area of the further intake section i.e., in the area between the cross cutter and the scaling device, is ten to one hundred times greater than in the area between the scaling device and the braking device. Due to the stronger negative pressure, the sheets are transported with pinpoint accuracy from the cross cutter to the scaling device.
  • the shingling device is adjustable in and/or against the transport direction of the sheets, depending on the cutting length. This allows for easy adaptation of the device to a changed sheet format.
  • cutting length dependent refers to a change in the arrangement of the shingling device relative to the cross cutter and, preferably, relative to the braking device, for a change in sheet format.
  • the braking device is fixed in and/or against the transport direction of the sheets. Thus, the distance between the transfer point and the braking device is the same for every sheet format, i.e., independent of the cutting length.
  • the shingle mechanism can then be adjusted in or against the direction of transport.
  • the sheets can be moved, offset, or shifted so that, for each adjustable sheet length, a leading sheet is braked approximately simultaneously at the front by the braking device and at the rear by the shing device.
  • this allows the distance between the transfer point and the braking device, or the transfer length, to be kept constant during a format change, with the braking device preferably not being adjusted during a format change. Instead, the distance between the braking device, which is preferably stationary, and the shing device is adjusted to the actual sheet length by adjusting the shing device.
  • the distance between the front transfer point of the sheets to a sheet processing machine and the braking device, or the transfer length remains the same for different formats or cutting lengths, which significantly simplifies the adjustment of the device to a different sheet format.
  • the transfer length With a constant transfer length, there is no need to change the overlap length of the sheets in the shing flow during a format change.
  • a defined stop point for the device can be established, which is the same for each sheet format.
  • the overlap ratio, or overlap length can be kept constant for each sheet format with a fixed distance between the transfer point and the braking device.
  • the length between the transfer point and the braking device corresponds exactly to an integer multiple of the overlap length.
  • stopping the device while the cross-cutting unit is in the middle of a cut can be prevented. Stopping the device while the cross-cutting unit is performing the cut can lead to uncontrolled damage to the sheet and/or the web of material. Therefore, stopping the device during a cut must be avoided. Since the trailing sheet has a shingle length or overlap length as a buffer against the leading, already folded-up sheet, the slow-running conveyor belts and the cross-cutting unit can be stopped in such a targeted manner that the cross-cutting unit stops outside the cutting area.
  • At least one intake device is provided to form an intake path, wherein the intake device comprises a suction profile or a suction box.
  • the intake device comprises a suction profile or a suction box.
  • the generated negative pressure can be produced in a targeted and localized manner.
  • a continuous suction profile in particular an arrangement of several suction profiles positioned one behind the other transversely to the transport direction of the bends, or a continuous suction box is required for pressure reduction and forming the intake path between the shingle device and the braking device.
  • the further intake section is provided.
  • a continuous suction profile from the cross cutter to the braking device allows for simple sealing and adjustment of the vacuum generation along the profile length in the transport direction of the bends.
  • a non-continuous or discontinuous reduction in pressure drop, or a sudden pressure drop, is provided along the length of the suction profile or suction box in the area of the overlapping device.
  • a single, uninterrupted suction profile or a single, uninterrupted or continuous suction box is provided, whereby the negative pressure level in the suction profile or suction box is divided by a barrier or seal. In other words, the length of the suction path can be changed by changing the position of the barrier.
  • the barrier or seal causes a non-continuous change in the pressure drop along the length of the suction profile or suction box.
  • the position of the sudden pressure increase in the suction profile or suction box in the transport direction of the sheets can be easily changed by the movable lock and, in particular, aligned to the position of the shing device when the shing device is adjustable depending on the sheet format.
  • the movable stop or seal, together with the shingling device is adjustable in and/or against the transport direction of the sheets.
  • This combined adjustability is achieved by providing a common carriage for the shingling device and the movable seal or stop, wherein the common carriage is adjustable in and/or against the transport direction of the sheets.
  • At least one telescopic suction profile and/or at least two interlocking suction profiles can be provided.
  • Telescopic and/or interlocking suction profiles represent simple mechanical designs of variable-length intake devices. Telescopic in this case means that several complementary suction profiles can be moved into one another, thus changing the length of the entire suction profile. It must be ensured that the two complementary, interlocking suction profiles are tightly connected, for example, by means of a dynamic seal, so that a substantially uniform pressure profile can be achieved along the length of the suction profile.
  • the intake section can also be formed from alternatingly arranged suction profiles, with a first suction profile extending in the transport direction from the scraping device and a second suction profile extending in the opposite direction from the braking device, and the two suction profiles overlapping at least partially transversely to the transport direction.
  • the two suction profiles can be shifted relative to each other in a meshing motion until the leading edge of one suction profile reaches the trailing edge of the other, and vice versa. At this point, the maximum length of the intake section is achieved.
  • Both of the above-mentioned methods for creating a variable-length intake section between the shingling device and the braking device also allow for an adjustable arrangement of the braking device relative to the shingling device. If the braking device is to be adjusted in and/or against the transport direction of the sheets, for example, to adapt the device to a changed sheet format, the intake section between the shingling device and the braking device can be easily adjusted to the changed length between the shingling device and the braking device.
  • FIG. 1 schematically shows a device 1 known from the prior art for forming an arc stream 2 of overlapping arcs 3 made of paper, film, or cardboard.
  • the device 1 has a feed unit (not shown) that conveys a virtually endless paper or cardboard strip 4.
  • the strip is supplied from a paper or cardboard roll on a feed side by a dispensing device (not shown) and can be guided through an intermediate paper buffer.
  • the cross-cutting device 5 is designed as a rotatably mounted shaft 6, which has a cutting edge 7 on its circumference. When the cutting edge 7 arranged on the shaft 6 and a stationary cutting edge 8 are engaged, the strip is 4 cut.
  • the arc length can be adjusted by changing the rotational speed of shaft 6 and the feed speed.
  • the arches 3 are transported in the transport direction X on a conveyor belt system with at least one high-speed conveyor belt 9.
  • a conveyor belt system with several conveyor belts 9 is provided, arranged one behind the other transversely to the transport direction X and spaced apart from each other.
  • the following descriptions of the conveyor belt 9 refer to this conveyor belt system.
  • a shing device 10 following the cross-cutting device 5 consists of a lifting unit 11 and a deceleration unit 12.
  • the deceleration unit 12 has at least one suction belt 13 arranged above the transport plane Y of the sheets 3.
  • the suction belt 13 is formed by a perforated conveyor belt that interacts with a vacuum-generating suction box 14.
  • the lifting unit 11 has a beater shaft 15 with at least one beater 16.
  • the beater 16 of the lifting unit 11 presses a sheet 3 against the suction belt 13 with each revolution of the beater shaft 15. Since the suction belt 13 moves at a lower speed than the fast-running conveyor belt 9, the leading edge of a trailing sheet 3 is conveyed under the raised trailing edge of a leading sheet 3.
  • the trailing arc 3 With the next rotation of the beater shaft 16, the trailing arc 3 is lifted at its trailing edge, allowing the trailing arc 3 to be conveyed beneath it. In this way, an arc stream 2 of overlapping arcs 3 is generated. Once the trailing edge of the leading arc 3 is no longer within the engagement area of the suction belt 13, the leading arc 3 is held above the transport plane by the trailing arc 3, as the trailing arc 3 is already being held up by the suction belt 13 before the leading arc 3 leaves the engagement area of the suction belt 13.
  • a braking device 17 Downstream of the shingling device 10, a braking device 17 is provided in the transport direction X of the arc stream 2.
  • the braking device 17 has at least one nipple roller 18, which together with at least one slow-running conveyor belt 19 forms a braking gap.
  • the distance between the braking device 17 and the shingling device 10 is adjusted such that the leading edge of an arc 3 preferably enters the braking gap directly and is decelerated.
  • the sheet stream 2 is transported at the same speed and, in particular, with substantially the same sheet length, i.e., with the same distance from the leading edge of the advancing sheet 3 to the leading edge of the trailing sheet 3, on a transfer table (not shown) to a transfer point (not shown) of a downstream processing machine.
  • the distance between the front transfer point of the sheets 3 to a sheet processing machine and the braking device 17, or the transfer length remains the same for different formats or cutting lengths, which significantly simplifies the adjustment of the device to a different sheet format.
  • the transfer length With a constant transfer length, there is no need to change the overlap length of the sheets 3 in the shingle stream during a format change.
  • the transport of the sheet's leading edge between the shingle device 10 and the braking device 17 is prone to malfunctions.
  • the leading edge of the sheet can detach from the rapidly moving conveyor belt 9, particularly at high transport speeds. This detachment can damage the sheet as it enters the braking gap of the braking device 17.
  • the sheet's leading edge can be displaced from its position, resulting in an inaccurate shingle length between the leading edge of the advancing sheet 3 and the leading edge of the trailing sheet 3.
  • the sheet's leading edge can come into frictional contact with the advancing sheet 3 either when detaching from the rapidly moving conveyor belt 9 or by slipping. This can further slow the sheet 3, preventing the desired shingle length from being achieved.
  • FIG. 2 A schematic representation of another device 1 for forming a shingle stream 2 of overlapping arcs 3 is shown in a side view. Identical or corresponding functional units, assemblies, components, and other corresponding features of the devices shown in the diagram are not included. Figures 1 and 2 The devices shown 1 are provided with the same reference numerals. The formation of a shed stream 2 of overlapping sheets 3 made of paper, foil or cardboard is done during the in Fig. 2 the embodiment shown corresponds to the scale flow formation described above in device 1. Fig. 1 .
  • the device shown in 1 is, in the embodiment according to Fig. 2 It is provided that the shing device 10 is adjustable in and/or against the transport direction X depending on the sheet length or sheet format. This is in Fig. 2 schematically shown by the double arrow 21.
  • the braking device 17, on the other hand, is fixed in and/or against the transport direction X of the sheets 3. In other words, this means that when the cutting length of the sheets 3 changes or the sheet format changes, the shing device 10 is offset, shifted, or moved relative to the braking device 17 such that, for every set sheet length, a leading sheet 3 is braked approximately simultaneously at the front by the braking device 17 and at the rear by the deceleration unit 12 of the shing device 10.
  • the distance between the transfer point of the sheets 3 (not shown) to a downstream machine and the braking device 17, or the transfer length, remains constant for different formats or cutting lengths of the sheets 3, which significantly simplifies the setting of the Fig. 2
  • the device 1 shown is used to change the sheet format.
  • the entire shingling device 10 can be adjusted in or against the transport direction X of the sheet flow 2; that is, the lifting unit 11 and the deceleration unit 12 are moved together.
  • These units can be mounted or supported for this purpose in a chassis, frame, or support that can be moved in and/or against the transport direction X of the sheets 3.
  • a suction profile 22 is provided between the shearing device 10 and the braking device 17 below the high-speed conveyor belt 9.
  • This suction profile is designed as a hollow profile and is connected to a suction device (not shown), such as an extraction fan.
  • a suction device such as an extraction fan.
  • each conveyor belt 9 is provided with a suction profile. 22 assigned.
  • a first suction section 24 is formed between the shearing device 10 and the braking device 17, and a further suction section 25 is formed in the area between the shearing device 10 and the cross-cutting device 5.
  • a negative pressure is exerted on the sheets 3 via the suction profile 22 and the conveyor belt 9, at least in the area of the leading edge of the sheets 3.
  • the applied negative pressure prevents the leading edge of a sheet 3 from detaching.
  • the suction section 24 ensures that the trailing sheet 3 is transported in a defined position after passing the shearing device 10.
  • the suction profile 22 preferably extends over the entire length of the area between the cross-cutting device 5 and the braking device 17. In the area in front of the shingle device 10, the suction profile 22 forms the further suction path 25.
  • the negative pressure applied to the suction profile 22 is intended to be significantly less strong in the area of the suction section 24 following the shingle device 10 in the transport direction X than the negative pressure applied in the area of the further suction section 25 between the cross-cutting device 5 and the shingle device 10.
  • a section 23 is provided where no negative pressure or a comparatively less strong negative pressure is applied.
  • the sheet 3 can be easily lifted in area 23 and pressed against the suction belt 13.
  • the lifting unit 11 therefore does not have to counteract a negative pressure that would hold the sheet 3 with its trailing edge on the fast-moving conveyor belt 9.
  • precise transport of the trailing bow 3 under the raised leading bow 3 is possible, while at the same time the trailing edge of the bow can be pressed against the suction belt 13 by the beater 16 without impairment.
  • the suction profile 22 can preferably be formed by a continuous hollow profile.
  • the different vacuum levels in the area of the suction path The connection between the intake manifold 24 and the intake section 25 can be achieved by a barrier or seal in the area of the sliding device 10. In this case, it is possible to provide only one vacuum-generating device, which is connected to the suction profile 22 in the area of the intake section 25. A low vacuum is simultaneously generated in the intake section 24 via the barrier.
  • the pressure drop in the area of the intake section 24 compared to the ambient pressure is preferably significantly lower than the pressure drop in the area of the intake section 25.
  • the barrier in the profile forming the intake sections 24, 25 is movable, in particular displaceable, in and/or against the transport direction X of the sheets 3.
  • the length of the intake section 24 can be easily adjusted to the sheet format by adjusting the barrier.
  • the length of the intake section 25 is also changed, so that the sheets 3 are transported from the cross-cutting device 5 to the shing device 10 in a defined position and orientation.
  • the movable lock together with the lifting unit 11 and/or the entire shingle assembly 10, is adjustable in and/or against the transport direction X of the sheets 3.
  • a carriage, frame, or rack (not shown) can be provided in which the shingle assembly 10 and the movable lock are arranged, and the carriage can be moved in and/or against the transport direction X of the sheets 3.
  • the device 1 can be easily adjusted to a new or changed sheet format.
  • the suction belt 13 of the shingle device 10 extends over a sufficiently long distance in the transport direction X of the arches, it may also be provided that only the lifting unit 11 and the movable lock are adjusted together in and/or against the transport direction X of the arches 3.
  • FIG. 3 A schematic representation of another device 1 for forming a shingle stream 2 of overlapping arcs 3 is shown in a side view. Identical or corresponding functional units, assemblies, components, and other corresponding features of the devices shown in the diagram are not included.
  • Fig. 1, 2 and 3 The devices 1 shown are provided with the same reference numerals. The formation of a shear stream 2 of overlapping sheets 3 made of paper, foil or cardboard occurs during the process described in Fig. 3 shown embodiment according to the scale stream formation described above in device 1 Fig. 1 .
  • the braking device 17 is designed to be displaceable or adjustable in and/or against the transport direction X of the sheets 3 according to the double arrow 21 in order to adapt the device 1 to a changed sheet format.
  • the shing device 10 is located in the Fig. 3
  • the device shown 1 is fixed in position and therefore cannot be adjusted in and/or against the transport direction X of the arches 3.
  • the intake tract 24 is designed according to Fig. 3 formed by at least one telescopic suction profile consisting of nested suction profile sections 26 and 27, and connected to a suction device.
  • the suction profile section 27 is fixed in position, and the suction profile section 26 is preferably designed to be displaceable in and/or against the transport direction X of the sheets 3.
  • the length of the suction section 24 can thus also be adapted to the sheet format.
  • FIG. 4 A further device 1 for forming a shingle stream 2 of overlapping arcs 3 is shown schematically in a side view. Identical or corresponding functional units, assemblies, components, and other corresponding features of the devices shown in the diagram are not included.
  • Fig. 1, 2 , 3 and 4 The devices 1 shown are provided with the same reference numerals. The formation of a shear stream 2 of overlapping sheets 3 made of paper, foil or cardboard occurs during the process described in Fig. 2 the embodiment shown corresponds to the scale flow formation described above in device 1.
  • Fig. 1 A further device 1 for forming a shingle stream 2 of overlapping arcs 3 is shown schematically in a side view. Identical or corresponding functional units, assemblies, components, and other corresponding features of the devices shown in the diagram are not included.
  • Fig. 1, 2 , 3 and 4 The devices 1 shown are provided with the same reference numerals.
  • the formation of a shear stream 2 of overlapping sheets 3 made of paper, foil or cardboard occurs during the process
  • the in Fig. 4 The embodiment of device 1 shown differs from the one in Fig. 3
  • the suction section 24 is formed from at least two mutually interlocking suction profiles 28 and 29, which can overlap at least partially transversely to the transport direction X of the arcs 3.
  • the suction profiles 28, 29 are in turn connected to at least one suction device. Transversely to the transport direction X of the arcs 3, the interlocking suction profiles 28, 29 can be arranged alternately.
  • the maximum length of the suction path 24 is reached. If the suction profiles 28 and 29 are pushed into each other in a meshing motion, for example, the suction profile 28 against the transport direction X of the bends, the length of the suction path 24 is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (6)

  1. Dispositif (1), en particulier découpeuse transversale à rouleaux, pour la formation d'un flux imbriqué de feuilles (3) se chevauchant, en particulier de feuilles de papier ou de carton, avec un dispositif de transport pour le transport de feuilles, avec un dispositif d'imbriquement (10) pour le chevauchement partiel des feuilles (3), avec un dispositif de freinage (17) suivant le dispositif d'imbriquement (10) dans la direction de transport (X) des feuilles (3) pour le freinage de feuilles imbriquées (3), en particulier par la formation d'une fente de freinage pour le passage de feuilles (3) réunies imbriquées, et avec un dispositif de coupe transversale (5) monté en amont du dispositif d'imbriquement (10) pour la coupe d'une bande de matériau en feuilles individuelles (3), dans lequel une section d'aspiration (24) est prévue entre le dispositif d'imbriquement (10) et le dispositif de freinage (17) pour l'aspiration et le transport ultérieur d'une feuille (3) suivant le flux imbriqué dans le dispositif de freinage (17) et dans lequel une section d'aspiration supplémentaire (25) est prévue entre le dispositif de coupe transversale (5) et le dispositif d'imbri-quement (10), caractérisé en ce qu'au moins un profilé d'aspiration continu (22) ou une caisse d'aspiration continue est prévu pour la réduction de pression et la formation de la section d'aspiration (24) entre le dispositif d'imbriquement (10) et le dispositif de freinage (17) et pour la formation de la section d'aspiration supplémentaire (25), dans lequel une réduction non continue de la réduction de pression dans la région du dispositif d'imbriquement (10) est prévue sur la longueur du profilé d'aspiration (22) ou de la caisse d'aspiration, dans lequel le profilé d'aspiration (22) ou la caisse d'aspiration présente un blocage mobile dans et/ou à l'encontre de la direction de transport pour la formation d'une réduction de pression non continue et dans lequel la section d'aspiration (24) entre le dispositif d'imbriquement (10) et le dispositif de freinage (17) et la section d'aspiration supplémentaire (25) dans la région du dispositif d'imbriquement (10) sont interrompues.
  2. Dispositif (1), en particulier découpeuse transversale à rouleaux, pour la formation d'un flux imbriqué de feuilles (3) se chevauchant, en particulier de feuilles de papier ou de carton, avec un dispositif de transport pour le transport de feuilles, avec un dispositif d'imbriquement (10) pour le chevauchement partiel des feuilles (3), avec un dispositif de freinage (17) suivant le dispositif d'imbriquement (10) dans la direction de transport (X) des feuilles (3) pour le freinage de feuilles imbriquées (3), en particulier par la formation d'une fente de freinage pour le passage de feuilles (3) réunies imbriquées, et avec un dispositif de coupe transversale (5) monté en amont du dispositif d'imbriquement (10) pour la coupe d'une bande de matériau en feuilles individuelles (3), dans lequel une section d'aspiration (24) est prévue entre le dispositif d'imbriquement (10) et le dispositif de freinage (17) pour l'aspiration et le transport ultérieur d'une feuille (3) suivant le flux imbriqué dans le dispositif de freinage (17) et dans lequel une section d'aspiration supplémentaire (25) est prévue entre le dispositif de coupe transversale (5) et le dispositif d'imbri-quement (10), caractérisé en ce que les sections d'aspiration (24, 25) sont formées par plusieurs dispositifs d'aspiration séparés, dans lequel le dispositif de transport présente au moins une bande d'aspiration (9) qui est guidée en continu dans la direction de transport des feuilles (3) sur les deux sections d'aspiration (24, 25) et la région du dispositif d'imbriquement (10), ou dans lequel des bandes d'aspiration séparées l'une de l'autre sont prévues pour la section d'aspiration (24) et la section d'aspiration supplémentaire (25) pour permettre le transport de feuilles dans la région des deux sections d'aspiration (24, 25), dans lequel chaque dispositif d'aspiration présente un profilé d'aspiration (26, 27, 28, 29) ou une caisse d'aspiration (20) et le profilé d'aspiration (26, 27, 28, 29) ou la caisse d'aspiration (20) est disposé en dessous de la bande d'aspiration (9) et dans lequel la section d'aspiration (24) entre le dispositif d'imbriquement (10) et le dispositif de freinage (17) et la section d'aspiration supplémentaire (25) dans la région du dispositif d'imbriquement (10) sont interrompues.
  3. Dispositif (1) selon la revendication 1, caractérisé en ce que le dispositif d'im-briquement (10) est réalisé de manière réglable en fonction de la longueur de coupe dans et/ou à l'encontre de la direction de transport des feuilles (3).
  4. Dispositif (1) selon l'une quelconque des revendications précédentes 1 ou 3, caractérisé en ce que le dispositif de blocage mobile est réalisé de manière réglable conjointement avec le dispositif d'imbriquement (10) dans et/ou à l'encontre de la direction de transport des feuilles (3).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de transport présente un agencement de bandes avec plusieurs bandes d'aspiration (9) s'étendant parallèlement les unes aux autres.
  6. Procédé pour la formation d'un flux imbriqué (2) de feuilles (3) se chevauchant, en particulier de feuilles de papier ou de carton, en outre en particulier pour la formation d'un flux imbriqué (2) de feuilles individuelles (3) coupées à partir d'une bande de matériau (4) avec un dispositif de coupe transversale (5), dans lequel des feuilles individuelles (3) sont transportées vers un dispositif d'imbriquement (10) et sont partiellement chevauchées pour produire un flux imbriqué (2), dans lequel les feuilles imbriquées (3) sont freinées avec un dispositif de freinage (17) suivant le dispositif d'imbriquement (10) dans la direction de transport (X) des feuilles (3), réalisé avec un dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les feuilles suivantes (3) d'un flux imbriqué sont transportées sous l'effet d'une aspiration dans le dispositif de freinage (17).
EP22203800.2A 2017-06-14 2018-06-14 Dispositif et procédé de transport de feuilles selon une position définie Active EP4144677B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE102017005661 2017-06-14
DE102018103563 2018-02-16
DE102018103597 2018-02-19
EP18734471.8A EP3619153B1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport à position définie de feuilles
PCT/EP2018/065834 WO2018229205A1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport à position définie de feuilles

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP18734471.8A Division EP3619153B1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport à position définie de feuilles
EP18734471.8A Division-Into EP3619153B1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport à position définie de feuilles

Publications (3)

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EP4144677A1 EP4144677A1 (fr) 2023-03-08
EP4144677B1 true EP4144677B1 (fr) 2025-11-12
EP4144677C0 EP4144677C0 (fr) 2025-11-12

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EP18734471.8A Active EP3619153B1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport à position définie de feuilles
EP22203800.2A Active EP4144677B1 (fr) 2017-06-14 2018-06-14 Dispositif et procédé de transport de feuilles selon une position définie

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US (1) US11352232B2 (fr)
EP (2) EP3619153B1 (fr)
JP (2) JP7433218B2 (fr)
KR (1) KR102357229B1 (fr)
DE (1) DE102018114252A1 (fr)
ES (2) ES3061421T3 (fr)
PL (2) PL3619153T3 (fr)
WO (1) WO2018229205A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4699969A1 (fr) * 2024-08-20 2026-02-25 FOSBER S.p.A. Dispositif de chevauchement et chaîne de production de feuilles comprenant le dispositif de chevauchement

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3812685C2 (de) 1988-04-16 1996-01-25 Bielomatik Leuze & Co Verzögerungs-Vorrichtung für Bogenlagen
JP2601959B2 (ja) * 1990-10-15 1997-04-23 富士写真フイルム株式会社 シート搬送区分装置
DE4108397C2 (de) * 1991-03-15 1995-09-21 Roland Man Druckmasch Vorrichtung zur Bildung einer Folge von sich unterlappenden Gegenständen
DE9103137U1 (de) * 1991-03-15 1991-06-13 Georg Spiess Gmbh, 8906 Gersthofen Vorrichtung zur Bildung einer Folge von sich unterschuppenden Gegenständen
JP2000296960A (ja) 1999-04-14 2000-10-24 Mitsubishi Heavy Ind Ltd シート積上げ装置
DE10103040B4 (de) 2000-05-16 2007-05-24 Heidelberger Druckmaschinen Ag Verfahren zur Bildung einer Folge von unterlappten Bögen
JP4056812B2 (ja) * 2002-07-11 2008-03-05 ハイニックス株式会社 断裁排出装置
JP2008264967A (ja) * 2007-04-24 2008-11-06 Komori Corp シーター装置
US7942406B2 (en) * 2008-08-22 2011-05-17 Hinix Co., Ltd. Roll feeder
DE102008060394B4 (de) * 2008-12-03 2019-08-14 Bw Papersystems Hamburg Gmbh Vorrichtung und Verfahren zum Bilden eines Stroms sich überlappender Bögen oder Bogenstapel
DE102012207064A1 (de) 2012-04-27 2013-10-31 Bielomatik Leuze Gmbh + Co. Kg Vorrichtung zum Schuppen und Ablegen von Bögen auf einen Stapel
DE102012214629A1 (de) 2012-08-17 2014-02-20 Bielomatik Leuze Gmbh + Co. Kg Vorrichtung zum Schuppen und Ablegen von Bögen auf einen Stapel
DE202016004428U1 (de) * 2016-07-20 2017-10-23 Barry-Wehmiller Papersystems, Inc. Vorrichtung zum Aufbringen von Datenträgern auf eine Trägerbahn

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Publication number Publication date
KR20200024838A (ko) 2020-03-09
WO2018229205A1 (fr) 2018-12-20
EP3619153A1 (fr) 2020-03-11
ES2962982T3 (es) 2024-03-22
EP3619153B1 (fr) 2023-08-02
JP2022093379A (ja) 2022-06-23
KR102357229B1 (ko) 2022-02-08
EP4144677A1 (fr) 2023-03-08
EP4144677C0 (fr) 2025-11-12
EP3619153C0 (fr) 2023-08-02
JP7433218B2 (ja) 2024-02-19
ES3061421T3 (en) 2026-04-01
JP2020524122A (ja) 2020-08-13
PL3619153T3 (pl) 2024-02-05
JP7548959B2 (ja) 2024-09-10
US20200165094A1 (en) 2020-05-28
US11352232B2 (en) 2022-06-07
PL4144677T3 (pl) 2026-03-30
DE102018114252A1 (de) 2018-12-20

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