EP3737630B1 - Arrangement pour découper une bande de matière en feuilles individuelles avec un accumulateur de bande - Google Patents

Arrangement pour découper une bande de matière en feuilles individuelles avec un accumulateur de bande Download PDF

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Publication number
EP3737630B1
EP3737630B1 EP20707356.0A EP20707356A EP3737630B1 EP 3737630 B1 EP3737630 B1 EP 3737630B1 EP 20707356 A EP20707356 A EP 20707356A EP 3737630 B1 EP3737630 B1 EP 3737630B1
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EP
European Patent Office
Prior art keywords
web
sheets
storage
material web
cross
Prior art date
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Active
Application number
EP20707356.0A
Other languages
German (de)
English (en)
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EP3737630A1 (fr
Inventor
Andreas Schilling
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
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BW Papersystems Stuttgart GmbH
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Publication date
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Publication of EP3737630A1 publication Critical patent/EP3737630A1/fr
Application granted granted Critical
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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
    • B65H20/00—Advancing webs
    • B65H20/30—Arrangements for accumulating surplus web
    • B65H20/32—Arrangements for accumulating surplus web by making loops
    • B65H20/34—Arrangements for accumulating surplus web by making loops with rollers
    • 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • 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
    • 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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51532—Blade cutter, e.g. single blade cutter
    • B65H2301/515323—Blade cutter, e.g. single blade cutter rotary
    • 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
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/143—Roller pairs driving roller and idler roller arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/21—Accumulators
    • B65H2408/217—Accumulators of rollers type, e.g. with at least one fixed and one movable roller
    • B65H2408/2171—Accumulators of rollers type, e.g. with at least one fixed and one movable roller the position of the movable roller(s), i.e. the web loop, being positively actuated
    • 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
    • B65H2511/112—Length of a loop, e.g. a free loop or a loop of dancer 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
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/321—Access
    • 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

Definitions

  • the invention relates to a device, in particular a roll cross cutter, more particularly for forming an imbricated stream of sheets that overlap or overlap, in particular sheets of paper or cardboard, with a cross cutting device for cutting a material web into individual sheets and with a web storage device upstream of the cross cutting device along the web transport path Storing and/or providing a web of material, the web of material being fed to the web store by a web unwind.
  • a corresponding device is, for example, from WO 2018/229201 A1 famous.
  • sheets of paper or cardboard can be provided as quasi-endless webs of material in the form of a paper roll from the web unwind.
  • the material web is fed to a cross-cutting device with the aid of a feed device with rollers or rollers and is cut there into sheets of a defined length.
  • the cut sheets are fed with the aid of conveyor belts to a shingling device to form an underlap of the sheets.
  • the shingled stream formed in this way can then be fed to a further processing machine, for example a printing press.
  • the printing press as the clock generator for the entire system, specifies the respective point in time at which a sheet must be made available with its leading edge at a transfer point of the printing press.
  • the shingling device and the cross-cutting device must therefore run synchronously with the printing press in order to ensure that the sheets are made available in good time in sync with the printing press.
  • the shingling device and the cross-cutting device In the event of a system stop, for example to change the paper roll, the printing machine, the shingling device and the cross-cutting device must be braked or stopped synchronously. Due to the mass inertia of the paper roll, however, the web unwinding cannot be slowed down as quickly as the shingling device and the cross-cutting device.
  • the web unwinding Due to the slower deceleration of the web unwinding, the web unwinding provides further webs of material until it comes to a standstill.
  • the material web provided in excess must be picked up by the device in a controlled manner in order to avoid damage to the material web and/or winding errors when the printing press is restarted.
  • a web storage device is therefore provided along the web transport path between the web unwind and the feed device, in order to be able to reliably receive or store a specific web length of the paper.
  • the Indian WO 2018/229201 A1 disclosed web accumulator has vertically running web loops.
  • a web loop is formed between two horizontally arranged, fixed deflection rollers and a deflection roller that can be moved in the vertical direction relative to the fixed deflection rollers.
  • the material web wraps around the fixed deflection rollers at least in sections and wraps around the movable deflection roller essentially by 180°.
  • the length of the web loop corresponds to the distance between the movable deflection roller and the plane formed by the axes of rotation of the fixed deflection rollers,
  • the movable deflection roller When the roll cross cutter is in operation, the movable deflection roller is in a basic position in which no web material or only a small length of the material web is stored. When the roll cross cutter brakes, the movable deflection roller is moved vertically in such a way that the length of the web loop is increased. The supply of unwinding material web taken up by the movable deflection roller is dimensioned in such a way that the excess part of the material web provided by the web unwinding is taken up by the web storage. The movable deflection roller can be brought into a maximum storage position that has a maximum distance from the movable deflection roller defined perpendicular to the plane formed by the axes of rotation of the fixed pulleys.
  • the vertical distance between the basic position and the maximum storage position is also referred to as the maximum storage distance of the movable deflection roller.
  • the storage section thus determines the length of a web loop that is formed, depending on the location of the basic position.
  • the length of the web loop can essentially correspond to twice the storage length.
  • the Indian WO 2018/229201 A1 The web accumulator shown has two deflection rollers that can be moved together and three that are fixed. Accordingly, two identical web loops are formed in the web store and the length of the stored material web corresponds to four times the length of the storage section.
  • web accumulator thus makes it possible to be able to stop and/or start up assemblies connected in series for material web processing at different times. In this way, gentle braking and/or acceleration of individual devices and/or facilities can be implemented. Temporarily different speeds of successive processing devices and/or assemblies of the material web processing can also be compensated with a web accumulator.
  • web accumulators can be used in a variety of ways, for example also to enable continuous operation during a splicing process of the material web.
  • a disadvantage of the aforementioned web storage is the additional and large space requirement.
  • a sufficiently large installation space must be made available for the web storage between the web unwinding and the cross-cutting device.
  • web storage facilities are built very high, as a result of which the machine operator's overview of the system and in particular the machine operator's view of the web unwinding is significantly impaired.
  • maintenance work involves a great deal of effort, since the upper area of the track storage facility can only be accessed by means of ladders and/or lifting devices.
  • the EP 1 944 259 A2 relates to a device for producing sheets of web-like material with a device for feeding a printing material web from a printing material roll and at least one device for longitudinally dividing a printing material web.
  • the DE 20 2018 103 354 discloses a device for forming an imbricated flow of under or overlapping sheets, in particular of paper or cardboard sheets.
  • From the DE 103 08 829 discloses a method for producing rectangular blanks of specified length and width from web or sheet-like material of specified width.
  • the web store for storing the material web is not arranged laterally between the cross-cutting device and the web unwinding device, but in the area of the cross-cutting device below the running height of the sheets, to achieve the above-mentioned tasks.
  • running height of the sheets relates to the height of the transport plane of the material web cut into sheets in the device according to the invention after it has passed the cross-cutting device.
  • the arrangement of the web storage below the cross-cutting device and below the functional units that follow in the direction of sheet transport allows the overall length of the device to be reduced with improved accessibility for a machine operator to the functional units of the device, for example for maintenance and repair work, and an improved overview of the machine operator.
  • the system boundary of the term "web storage” in the sense of the invention preferably includes only the fixed deflection rollers provided for the formation of web loops and the at least one movable deflection roller interacting with them and, if necessary, further functional units, such as a drive and/or a controller for the movable deflection roller
  • the system boundary of the functional unit "web storage” can include a region of the transport path of the material web that begins in front of a first fixed deflection roller provided for forming a web loop and ends after a last fixed deflection roller provided for forming a web loop.
  • the system boundary does not include further deflection rollers that are used to feed or continue the material strip from the web unwinding to the first fixed deflection roller and/or to discharge the material strip from the last stationary deflection rollers are provided in the direction of a material web feed in front of the cross-cutting device.
  • the web store forms at least one web loop, preferably two web loops, for storing the web of material.
  • the web loop is changeable in length by changing the position of a movable idler pulley relative to a fixed idler pulley,
  • the material web running off the web unwind is preferably guided via a fixed deflection roller to a movable deflection roller and further to a further fixed deflection roller.
  • the fixed deflection rollers can be arranged next to one another at a distance that essentially corresponds to the diameter of the movable deflection roller.
  • the web of material wraps around the stationary deflection rollers at least in sections and wraps around the movable deflection roller preferably essentially by 180°.
  • the movable deflection roller can be moved perpendicularly to the plane that is formed by the axes of rotation of the fixed deflection rollers.
  • the total length of a web loop preferably essentially corresponds to the distance between a first fixed deflection roller and a immediately following movable deflection roller and the distance between the movable deflection roller and a second fixed deflection roller immediately following.
  • the web store it is also possible for the web store to have a number of movable deflection rollers and a number of fixed deflection rollers.
  • the web store is designed to store the material web essentially horizontally.
  • the term "horizontal storage” means that the at least one web loop for storing the material web runs essentially in the horizontal direction.
  • the invention also includes a slight inclination of the web loop formed to the horizontal, which can be advantageous in order to optimally utilize the installation space below the running height of the sheets.
  • the movable deflection roller is then moved essentially in the horizontal direction in order to change the length of a web loop of the web store. Compared to a vertical design of the web loop, the height of the web store and thus also the height of the entire device can be significantly reduced.
  • this arrangement of the web store results in a compact design and a reduced space requirement for the device.
  • the lower overall height of the device improves the overview for the operator, in particular the view of the web unwind. Easy access to all components or functional units of the web accumulator, especially for repair and/or maintenance work, can thus be ensured in a simple manner.
  • the fixed deflection rollers of the web store are arranged vertically one above the other.
  • the material web can be vertically fed to or removed from the web store or the first and last stationary deflection rollers involved in forming the web loop.
  • a shingling device downstream of the cross-cutting device in the transport direction of the sheets is provided for overlapping or under-lapping the sheets in certain areas.
  • the web store is preferably arranged below the functional units "cross-cutting” and “shingling” and, if necessary, further subsequent functional units.
  • the material web is then stored below the running height of the sheets or below the transport path of the sheets in relation to the area between the cross-cutting device and the shingling device.
  • the maximum length of a storage section of the web storage i.e. the maximum distance between a basic position of a movable deflection roller and its maximum storage position, in which the length of the web loop is maximum, can essentially correspond to the distance between the cross-cutting device and the shingling device.
  • a braking device downstream of the shingling device in the transport direction of the sheets is also advantageously provided for braking shingled sheets, in particular by forming a braking gap for the passage of sheets brought together in a shingled manner.
  • the web store is preferably arranged below the functional units “cross-cutting”, “shingling” and “braking” and, if appropriate, further subsequent functional units.
  • the material web is then stored below the running height of the sheets or below the transport path of the sheets in relation to the area between the cross-cutting device and the braking device or even beyond.
  • the maximum length of a storage section of the web store i.e.
  • the maximum distance between a basic position of a movable deflection roller and its maximum storage position, in which the length of the web loop is maximum can essentially correspond to the distance between the cross-cutting device and the braking device.
  • a material web feeder upstream of the cross-cutting device in the transport direction of the material web is provided for the driven feeding of the material web from the web store to the cross-cutting device.
  • the web store can then also be arranged below the feed height of the material web to the material web infeed,
  • the maximum storage distance of the web storage i.e. the maximum distance between a basic position of a movable deflection roller and its maximum storage position, in which the length of the web loop is maximum, can thus be extended beyond the position of the cross-cutting device into the area of the material web infeed or even beyond in the direction extend for web unwinding.
  • the maximum length of a storage section can essentially correspond to the distance between the material web draw-in and the braking device.
  • the storage device has at least two fixed deflection rollers, with the fixed deflection rollers preferably being arranged between the cross-cutting device and the web unwind, preferably in the area between the material web infeed and the web unwind, below the running height of the sheets.
  • the area between the material web infeed and the web unwinding is to be understood as the space that is delimited in the horizontal direction by a first vertical plane through the material web infeed and a second vertical plane through the web unwinding.
  • the first vertical plane through the material web feed is defined by the axis of the driving material roller of the material web feed.
  • the second vertical plane is defined by the axis of rotation of the web unwind.
  • the stationary deflection rollers can be arranged between the cross-cutting device and the web unwind, preferably between the material web infeed and the web unwind.
  • the fixed deflection rollers are vertically spaced from each other and preferably vertically one above the other arranged. In this way, the space available for the web store can be optimally used.
  • the web store has at least one, preferably at least two, more preferably together, horizontally movable deflection rollers, with the movable deflection roller being able to be adjusted into a threading position in the direction of web unwinding, which is to the side of the fixed deflection rollers in the area between the fixed deflection rollers and of the web unrolling.
  • a drive for moving the movable deflection roller is preferably provided in the web store.
  • a common drive is also preferably provided for a plurality of movable deflection rollers.
  • the movable deflection rollers are then preferably moved together, ie simultaneously.
  • the movable deflection rollers can also be designed to be manually adjustable or displaceable.
  • the movable deflection roller is moved horizontally within the web storage from the basic position to the maximum storage position over a distance of at least 500 mm to at most 5,000 mm, preferably from at least 1,000 mm to at most 3,500 mm, preferably 2,000 mm.
  • the movable deflection roller can be moved depending on the roller diameter of the web unwind and/or the conveying speed of the material web,
  • the maximum storage position of a movable deflection roller is preferably reached in the horizontal direction in the area between the cross-cutting device and the braking device, more preferably in the area between the shingling device and the braking device.
  • a maximum storage position is particularly preferably achieved when the movable deflection roller is located vertically below the braking device.
  • the web storage has at least one horizontally movable dancer deflection roller for influencing the material tension, the dancer deflection roller preferably being provided along the web transport path in the area between two movable deflection rollers of the web storage.
  • the dancer deflection roller can compensate for fluctuations in the web tension.
  • the dancer deflection roller forms a web loop in the material web for this purpose. Web tension is compensated for by the dancer guide roller performing small lifting movements, which slightly increases or decreases the length of the web transport path.
  • the dancer deflection roller is moved in such a way that the web transport path is lengthened. Conversely, when the web tension is increased, the length of the web transport path is reduced by an opposite lifting movement of the dancer guide roller. In this way, the control of the material web tension can be integrated into the web storage. This eliminates the need to provide a separate device for controlling the material web tension. By integrating the material web tension control into the web storage device, a more compact design of the device can be achieved, as a result of which the space required for the device can be further reduced.
  • the compensating movements of the dancer deflection roller can be actively controlled.
  • the dancer pulley itself can serve as a measuring element.
  • a separate web tension measuring roller can also be used to measure the web tension, which is then only used to measure the web tension.
  • the dancer deflection roller is preferably moved with the aid of a hydraulic cylinder.
  • the web store preferably has a first stationary deflection roller along the web transport path.
  • the material web can then be guided around a first movable deflection roller, forming a first web loop.
  • the deflection roller that follows along the web transport path is then preferably designed as a dancer deflection roller.
  • the material web can then be guided around a second movable deflection roller to form a second web loop, before the material web can be guided over a second stationary deflection roller and can leave the web store.
  • two web loops can be formed in the web store and the maximum length of the stored material web corresponds to four times the length of the maximum storage section.
  • the dancer deflection roller is preferably designed to be movable over a distance of at least 50 mm to at most 500 mm, preferably from at least 10 mm to at most 350 mm, preferably 250 mm.
  • the lengths of the aforesaid traverse paths have proven to be particularly suitable for controlling the material web tension.
  • the web store and preferably together with the cross-cutting device and the shingling device, is mounted on a chassis which is designed to be movable laterally relative to the web unwind, preferably perpendicular to the transport direction of the sheets.
  • the material web infeed and/or the braking device and/or a transport device for the material web and/or sheets with at least one transport roller and/or a transport belt and optionally other components and assemblies can also be arranged on the common chassis.
  • the chassis can be mounted on rollers and/or rails. Good accessibility during maintenance and/or repair work on the devices mounted on the chassis is ensured by the chassis that can be moved laterally for unwinding the web.
  • chassis together with the track storage and other components and assemblies mounted on the chassis can be exchanged for another chassis with a different track storage and possibly other other components and assemblies can be exchanged.
  • a device 1 according to the invention for cutting a material web 2 into individual sheets 3 of paper or cardboard is shown schematically.
  • the device 1 has a web unwinding 4 that provides a quasi-endless material web 2 from a paper roll 5 .
  • the web of material 2 is provided by the web unwind 4 and can initially be conveyed over a plurality of deflection rollers 22, In 1 it is shown that by adjusting the height of deflection rollers 22, different web transport paths can be realized from web unwinding 4 with different lengths to the subsequent functional units.
  • the material web 2 can be pulled after passing two fixed deflection rollers 22 over a breaking tool 6 to curvatures caused by the rolled storage of the material web 2 may be caused on a paper roll 5 to compensate.
  • a web store 7 is provided along the transport path of the material web 2 after the web unwinding 4, through which the material web 2 runs.
  • a preferred system boundary of the functional unit "track memory" is in fig, 1 shown schematically as a dashed line.
  • a material web feeder 8 Downstream of the web store 7 along the web transport path is a material web feeder 8 which is used to drive the material web 2 .
  • the web of material 2 is then guided to a cross-cutting device 9 where the web of material 2 is cut into sheets 3 .
  • a shingling device 11 In the transport direction 10 of the sheets 3, a shingling device 11 is arranged downstream of the cross-cutting device 9, with which an overlapped shingled stream is produced.
  • a braking device 12 is provided in the transport direction 10 of the sheets 3 behind the shingling device 11, with the braking device 12 being able to be formed, for example, by nipple rollers. This is for example in the WO 2018/229201 A1 already described. The revelation of the WO 2018/229201 A1 is fully included in the disclosure content of the present description.
  • the web store 7 is arranged together with the web feeder 8, the cross-cutting device 9, the shingling device 11 and the braking device 12 on a chassis 13 shown schematically.
  • the chassis 13 is mounted on rollers 14 and can be displaced transversely to the direction of transport 10 of the sheets 3 relative to the web unwind 4 .
  • the carriage 13 can be moved out of the processing line transversely to the transport direction 10 of the sheets 3 .
  • the chassis 13 can also be guided on rails (not shown).
  • Other components and assemblies, such as the crushing tool 6, can also be arranged on the chassis 13 and can be moved laterally together with it.
  • the web store 7 is aligned horizontally and is arranged below the sheet transport plane of the sheets 3 in the area between the web feeder 8 and the braking device 12 .
  • the material web 2 can dem Web storage 7 are fed in the vertical direction.
  • the web of material 2 is guided over a first stationary deflection roller 15 as a component of the web store 7 and around a first movable deflection roller 17 with the formation of a web loop 16 .
  • the deflection roller that follows along the web transport path is designed as a dancer deflection roller 18 .
  • the material web 2 is then guided around a second movable deflection roller 20 to a second stationary deflection roller 21 in order to form a second web loop 19 .
  • the material web 2 then leaves the web store 7 in a vertical direction and is deflected by a further deflection roller 22, which lies outside the system boundary of the web store 7, to the material web intake 8.
  • the two movable deflection rollers 17, 20 can be moved together in the horizontal direction by means of a drive 23.
  • the movable deflection rollers 17, 20 can be moved in the direction of the web unwinding 4 and brought into a threading position 24 (in 1 position shown in dashed lines).
  • a threading position 24 in 1 position shown in dashed lines.
  • the horizontal distance between the movable deflection rollers 17, 20 and the unrolled web 4 is less than the distance between the stationary deflection rollers 15, 21 and the unrolled web 4.
  • the movable deflection rollers 17, 20 can be brought into a so-called basic position 25 in the transport direction 10 of the sheets 3 in which no web material or only a short length of the material web 2 is stored in the web store 7 or kept available.
  • the basic position 25 can, as in 2 shown, are in the vertical and/or horizontal direction in the area between the fixed deflection rollers 15, 21. Alternatively, the basic position 25 can also lie laterally next to the fixed deflection rollers 15, 21 in the transport direction 10 of the sheets 3.
  • the chassis 13 is shown with the web store 7, with the movable deflection rollers 17, 20 being in a storage position 26.
  • the Storage position 26 marks the maximum displacement position of the movable deflection rollers 17, 20 in the transport direction 10 of the sheets 3.
  • the movable deflection rollers 17, 20 can be moved between the basic position 25 and the storage position 26 when the device 1 is in operation.
  • the distance X between the basic position 25 and the storage position 26 defines the maximum length of the storage section and thus determines the maximum length of the material web 2 to be accommodated by the web storage 7 .
  • the length of the maximum material web 2 that can be accommodated corresponds essentially to four times the length of the storage section, ie essentially four times the distance X out 3 .
  • the distance X corresponds to half the length of a web loop 16, 19.
  • the basic position 25 of the movable deflection rollers 17, 20 can with reference to 3 are also further to the left, that is shifted in the direction of the braking device 12 .
  • the material web feed 8, the cross-cutting device 9, the shingling device 11 and the braking device 12 must be stopped synchronously in order to ensure the synchronized running of the aforementioned assemblies be decelerated delayed to the aforementioned facilities.
  • the movable deflection rollers 17, 20 are moved in the transport direction 10 of the sheets to accommodate the material web 2 provided in excess.
  • the length of the storage section and thus also the length of the web loops 16, 19 is increased in this way.
  • the material web 2 provided in excess is picked up and stored in this way by the web store 7.
  • the tension of the material web 2 preferably remains unchanged during the braking process.
  • the web feed 8, the cross-cutting device 9, the shingling device 11 and the braking device 12 can be started up synchronously and briefly before the web unwinding 4.
  • the web store 7 assumes the function of providing the stored material web 2 .
  • the movable deflection rollers 17, 20 are moved counter to the transport direction 10 of the sheets. The length of the web loops 16, 19 is reduced in this way and the previously stored material web 2 is released from storage.
  • the movable deflection rollers 17, 20 stop and are then preferably in the basic position 25.
  • the movable deflection rollers 17, 20 can be moved between the base position 25 and the storage position 26 for storing the material web 2.
  • a dancer deflection roller 18 is provided along the web transport path between the first movable deflection roller 17 and the second movable deflection roller 20 to regulate the material web tension. Web tensions are compensated for by the dancer deflection roller 18 using a hydraulic drive 27 to perform small lifting movements in and/or against the transport direction 10 of the sheets 3 in the horizontal direction. The length of the web transport path is slightly increased or reduced in this way. If the tension of the material web 2 is too low, for example, the dancer deflection roller 18 is moved counter to the transport direction 10 of the sheets 3, as a result of which the length of the web transport path is increased. As a result, the tension in the material web 2 is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Advancing Webs (AREA)
  • Unwinding Webs (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Details Of Cutting Devices (AREA)

Claims (10)

  1. Dispositif (1), en particulier dispositif de coupe transversale à rouleaux, plus particulièrement pour former une flux imbriqué de feuilles (3) se chevauchant par le haut ou par le bas, en particulier de feuilles de papier ou de carton, comportant un dispositif de coupe transversale (9) pour couper une bande de matière (2) en feuilles (3) individuelles et comportant un dispositif de stockage de bande (7) en amont du dispositif de coupe transversale (9) le long du chemin de transport de bande pour stocker et/ou fournir une bande de matière, dans lequel la bande de matière (2) est amenée au dispositif de stockage de bande (7) par un dérouleur de bande (4), caractérisé en ce que,
    le dispositif de stockage de bande (7), pour stocker la bande de matière (2), est disposé dans la zone du dispositif de coupe transversale (9) en dessous de la hauteur de défilement des feuilles (3).
  2. Dispositif (1) selon la revendication 1, caractérisé en ce que le dispositif de stockage de bande (7) est conçu pour stocker la bande de matière (2) horizontalement.
  3. Dispositif (1) selon la revendication 1 ou la revendication 2, caractérisé en ce qu'un dispositif de flux imbriqué (11), en aval du dispositif de coupe transversale (9) dans la direction de transport (10) des feuilles (3), amène les feuilles (3) à se chevaucher par zones vers le haut ou vers le bas, dans lequel le dispositif de stockage de bande (7) est conçu pour stocker la bande de matière (2) dans le chemin de transport des feuilles (3) entre le dispositif de coupe transversale (9) et le dispositif de flux imbriqué (11) en dessous la hauteur de défilement des feuilles (3).
  4. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un dispositif de freinage (12), en aval du dispositif de flux imbriqué (11) dans la direction de transport (10) des feuilles (3), est destiné au freinage des feuilles (3) en flux imbriqué, en particulier par formation d'une fente de freinage pour le passage des feuilles (3) réunis en flux imbriqué, dans lequel le dispositif de stockage de bande (7) est conçu pour stocker la bande de matière (2) dans la direction de transport (10) des feuilles (3) entre le dispositif de coupe transversale (9) et le dispositif de freinage (12) en dessous de la hauteur de défilement des feuilles (3).
  5. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une amenée de bande de matière (8), en amont du dispositif de coupe transversale (9) le long du chemin de transport de bande, est destinée à l'amenée de la bande de matière (2) depuis le dispositif de stockage de bande (7) au dispositif de coupe transversale (9), dans lequel le dispositif de stockage de bande (7) est conçu pour stocker la bande de matière (7) dans la direction de transport de la bande de matière entre l'amenée de bande de matière (8) et le dispositif de coupe transversale (9) en dessous de la hauteur de défilement des feuilles (3).
  6. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de stockage de bande (7) comporte au moins deux rouleaux de renvoi (15, 21) fixes superposés verticalement, dans lequel, de préférence les rouleaux de renvoi (15, 21) fixes sont disposés entre le dispositif de coupe transversale (9) et le dérouleur de bande (4), de préférence dans la zone entre l'amenée de bande de matière (8) et le dérouleur de bande (4), en dessous de la hauteur de défilement des feuilles (3).
  7. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de stockage de bande (7) comporte au moins un, de préférence au moins deux rouleaux de renvoi (17, 20), plus préférablement mobiles conjointement horizontalement, dans lequel le rouleau de renvoi (17, 20) mobile peut se déplacer dans la direction du dérouleur de bande (4) dans une position d'insertion (24) latéralement par rapport aux rouleaux de renvoi (15, 21) fixes.
  8. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le rouleau de renvoi (17, 20) mobile peut se déplacer de la position d'insertion (24) dans la direction du dispositif de freinage (12) dans une position de stockage (26) maximale dans laquelle la longueur de la section de stockage de la bande de matière (2) entre un rouleau de renvoi (15, 21) fixe et le rouleau de renvoi (17, 20) mobile est maximale, dans lequel, de préférence la position de stockage (26) maximale est atteinte dans la zone entre le dispositif de coupe transversale (9) et le dispositif de freinage (12), plus préférentiellement dans la zone entre le dispositif de flux imbriqué (11) et le dispositif de freinage (12).
  9. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de stockage de bande (7) comporte au moins un rouleau de renvoi (18) libre, mobile horizontalement pour influencer la tension de la bande de matière, dans lequel, de préférence le rouleau de renvoi (18) libre est disposé verticalement dans la direction de transport (10) de la bande de matière (2) dans la zone entre deux rouleaux de renvoi (17, 20) mobiles du dispositif de stockage de bande (7).
  10. Dispositif (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de stockage de bande (7) et, de préférence conjointement avec le dispositif de coupe transversale (9), le dispositif de flux imbriqué (11) et le dispositif de freinage (12), est monté sur un châssis (13), lequel est conçu pour être mobile latéralement par rapport au dérouleur de bande (4), de préférence perpendiculairement à la direction de transport (10) des feuilles (3).
EP20707356.0A 2019-02-20 2020-02-11 Arrangement pour découper une bande de matière en feuilles individuelles avec un accumulateur de bande Active EP3737630B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019104275 2019-02-20
DE102019119994.8A DE102019119994A1 (de) 2019-02-20 2019-07-24 Vorrichtung zum Schneiden einer Materialbahn in einzelne Bögen mit einem Bahnspeicher
PCT/EP2020/053412 WO2020169401A1 (fr) 2019-02-20 2020-02-11 Arrangement pour découper une bande de matière en feuilles individuelles avec un accumulateur de bande

Publications (2)

Publication Number Publication Date
EP3737630A1 EP3737630A1 (fr) 2020-11-18
EP3737630B1 true EP3737630B1 (fr) 2022-04-27

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EP20707356.0A Active EP3737630B1 (fr) 2019-02-20 2020-02-11 Arrangement pour découper une bande de matière en feuilles individuelles avec un accumulateur de bande

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Country Link
US (1) US20210024314A1 (fr)
EP (1) EP3737630B1 (fr)
JP (1) JP7148621B2 (fr)
KR (1) KR102499675B1 (fr)
DE (1) DE102019119994A1 (fr)
DK (1) DK3737630T3 (fr)
ES (1) ES2922350T3 (fr)
PL (1) PL3737630T3 (fr)
WO (1) WO2020169401A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114436030B (zh) * 2021-10-18 2024-01-02 江苏嘉拓新能源智能装备股份有限公司 一种旋转同步式极片裁切机构及裁切方法

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JP2021524832A (ja) 2021-09-16
KR20210007955A (ko) 2021-01-20
JP7148621B2 (ja) 2022-10-05
EP3737630A1 (fr) 2020-11-18
WO2020169401A1 (fr) 2020-08-27
US20210024314A1 (en) 2021-01-28
KR102499675B1 (ko) 2023-02-14
ES2922350T3 (es) 2022-09-13
DK3737630T3 (da) 2022-07-25
DE102019119994A1 (de) 2020-08-20
PL3737630T3 (pl) 2022-08-22

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