EP3757046B1 - Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine - Google Patents

Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine Download PDF

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Publication number
EP3757046B1
EP3757046B1 EP20180319.4A EP20180319A EP3757046B1 EP 3757046 B1 EP3757046 B1 EP 3757046B1 EP 20180319 A EP20180319 A EP 20180319A EP 3757046 B1 EP3757046 B1 EP 3757046B1
Authority
EP
European Patent Office
Prior art keywords
webs
cutting
material web
overlap
free ends
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
EP20180319.4A
Other languages
German (de)
English (en)
Other versions
EP3757046A1 (fr
Inventor
Matthias Horn
Thomas Janthur
Karl Richard Busch
Frank Grothaus
Axel Henning
Marius Karger
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.)
Koerber Technologies GmbH
Original Assignee
Koerber Technologies GmbH
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Filing date
Publication date
Application filed by Koerber Technologies GmbH filed Critical Koerber Technologies GmbH
Priority to EP23202468.7A priority Critical patent/EP4282797A3/fr
Publication of EP3757046A1 publication Critical patent/EP3757046A1/fr
Application granted granted Critical
Publication of EP3757046B1 publication Critical patent/EP3757046B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status 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
    • B65H21/00—Apparatus for splicing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1842—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact
    • B65H19/1852—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact taking place at a distance from the replacement roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/20—Cutting-off the expiring web
    • 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
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B65H35/0073—Details
    • B65H35/008—Arrangements or adaptations of cutting devices
    • 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
    • B65H35/06—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 blade, e.g. shear-blade, 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
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/462—Form of splice
    • B65H2301/4621—Overlapping article or web portions
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/54—Cigarette making

Definitions

  • the invention relates to a device, designed and set up for connecting two material webs each running from a reel, comprising a first receptacle for receiving a first reel with a first material web of finite length, a second receptacle for receiving a second reel with a material web of finite length, Transport means for transporting the material webs in the conveying direction T, as well as a connecting station with a cutting device for cutting a free, trailing end of the first material web and a free, leading end of the second material web, and with a connecting device for connecting the two cut, free ends of the material webs Length to an endless material web to form an overlap area, the connecting station being designed and set up to form an overlap area which is provided with at least one opening across the width of the endless material web.
  • the invention relates to a method for connecting two material webs unwound from a reel, comprising the steps: providing the first and second material webs, transporting the two material webs in the conveying direction T, aligning the two material webs lying one above the other, cutting the two material webs, etc that a trailing end of the first material web and a leading end of the second material web are created, connecting the two cut, free ends of the material webs of finite length to form an endless material web, forming an overlap area by means of a connecting station, at least one breakthrough being created in the overlap area.
  • Such devices and methods are used in the tobacco processing industry, especially in the production of so-called "heat-not-burn" products, in order to provide endless material webs to maintain the production of endless strands without interruption.
  • the material webs are usually wound on bobbins and are of finite length. Before a first bobbin with a material web of finite length is completely unwound or runs empty by transporting it in the conveying direction T, a second bobbin with a material web of finite length is transported in the conveying direction T and positioned relative to the first material web.
  • the two material webs more precisely the trailing, i.e. the rear end of the first material web that is currently in production and the leading, i.e.
  • front end of the new, still completely wound material web are aligned with one another and cut, in order to then be connected to one another to form an endless material web become.
  • the second material web which is then in production, is transported in the conveying direction T in order to then be connected to another material web before it runs completely empty and so on.
  • the reels Due to the high production speed and the correspondingly high transport speed of the material web, the reels sometimes run empty every minute. Particularly when producing “heat-not-burn” products, the film strips, which are at least partly made of tobacco, are thick and correspondingly heavy. Since the reels on which the film webs are wound only have a limited capacity, i.e. the size of the reel is limited, this leads to a particularly frequent change of the reels, with the result that material webs with connection points, which are also splice points, appear at short intervals are called, have to be transported through a format that is precisely dimensioned for a strand to be manufactured.
  • the previously known methods and devices for connecting two material webs unwound from a reel have connecting stations with a cutting device, by means of which either a rectangular cut (transverse to the conveying direction of the material webs) or a diagonal cut is carried out.
  • the known cutting devices are only designed to carry out so-called complementary cuts. This means that the cut edges of the material webs created by the cutting device fit into or against one another according to the key-lock principle or - in a complementary manner - can be placed against one another in a suitable manner.
  • the transverse or diagonal or otherwise complementary The cut free ends of the material webs are placed one on top of the other and connected to form an endless material web, forming an overlap area.
  • the endless material webs are guided through the format already mentioned, in and through which the endless material web is formed into an endless strand with a substantially round cross section.
  • endless strands of film webs at least partially made of tobacco these are, for example, cut into strips and formed into an endless strand.
  • the material web/film web has a thickening in the overlap area closed over the width of the material web, which has to be transported through the format.
  • the overlap area is correspondingly designed to be at least partially double-layered across the width of the material web and is closed over the entire surface.
  • the endless material web formed therefrom is designed to be double-layered at least in sections.
  • rectangular free ends are created, which, when overlapped, lead to an overlap area in which a uniform double layer is formed over the entire length of the overlap in the conveying direction T, which leads to considerable thickening , which must be transported by the format.
  • 200% based on the areas outside the overlap area
  • a reduced overlap area is formed, in which the double layer of material is distributed over a distance in the conveying direction T.
  • the endless material web is also continuously closed in the overlap area, so that there is still a thickening in the overlap area when viewed over the entire width of the material web.
  • the double layer leads to an accumulation of material compared to the material web outside the overlap area of up to approx. 150%.
  • This accumulation of material leads to the strand running unevenly due to the format being set up exactly to the desired diameter of the endless strands to be formed.
  • the accumulation of material can cause a jerk in the endless material web or the forming strand, which in turn can lead to tearing of the material web.
  • the accumulations of material that have to be "forced" through the format can also lead to damage to a format belt guided in the format and/or the material web and/or the strand to be formed.
  • the object underlying the invention is now to create a device which ensures a connection of free ends of two material webs that reduces the thickening of the endless material web in the overlap area.
  • the further task is to propose an appropriate procedure.
  • the connecting station is designed and set up to form an overlap area which has areas of overlap on the one hand and areas free of material on the other across the width of the endless material web, the size of the areas of overlap being determined
  • Size of the material-free areas is in a ratio of 0.8 to 1.2, preferably from 0.9 to 1.1 and particularly preferably from 0.95 to 1.05, or there are more/larger material-free areas over the entire width of the overlap area
  • There are areas as areas of overlap or the areas of overlap and the material-free areas essentially correspond in terms of their size.
  • This design of the connecting station reduces the accumulation of material in the overlap area. Regardless of whether the or each breakthrough, i.e. a hole or the like that cuts through both material webs in the overlap area, occurs before the connection or after the two free ends are connected, the thickening of the endless material web is reduced, which means the previously described disadvantages of the prior art be overcome.
  • the connecting station By designing the connecting station to create at least one opening in the overlap area, a volume reduction of material in the overlap area and thus a more uniform distribution of material is achieved in a surprisingly simple and effective manner, which means that the endless material web is transported through the format in a way that is gentle on the endless material web and the format guaranteed.
  • a breakthrough is understood to mean, in particular, any opening or the like with an extent greater than 1 mm 2 .
  • the connecting station is designed and set up to form an overlap area which has areas of overlap on the one hand and areas free of material on the other hand across the width of the endless material web, the areas of overlap and the areas free of material essentially corresponding to one another in terms of their size .
  • the size corresponds to the respective area.
  • This achieves optimal material distribution across the width of the material web and also over the distance of the overlap area in the conveying direction T. This means that the material distribution in the overlap area corresponds to the material distribution outside the overlap area.
  • the thickening/accumulation of material created by the double layers is completely compensated for by the holes, openings or the like, so that an identical amount of material in width/circumference is always transported through the format.
  • the volume of each infinitesimally small strip formed from an area of an infinitesimally small strip of the material web running over the entire width multiplied by the (respectively local) thickness of the material web/film web is always 100% based on the volume of an infinitesimally small strip outside the overlap area.
  • this constant material distribution is maintained despite the overlapping areas, since the additional volume is compensated for by the holes in the overlap area/missing material in the overlap area, so that ideally no thickening occurs at all.
  • the device is designed and set up as material webs for connecting two film webs consisting at least partially of tobacco.
  • the effect is even Material distribution over the length and width of the endless material web including the overlap area is particularly important.
  • the connecting station comprises means for moistening at least one of the free ends of the film webs of finite length to be connected.
  • This means which is designed and set up to moisten one or both free ends, ensures a particularly strong connection of the film webs to be spliced.
  • the supply of liquid, for example water, glycerin, propylene glycol or the like, to at least one of the free ends moistens and softens the material of the tobacco-containing or tobacco-containing film webs, thereby facilitating the process of joining the two film webs for a firm and secure connection is supported.
  • the connecting station comprises means for pressing at least the free ends of the film webs of finite length to be connected. This creates a particularly strong and stable connection between the free ends of two film webs.
  • the connecting station comprises means for heating at least the free ends of the film webs of finite length to be connected. This allows the moistened overlap area to be dried during connection, ensuring rapid solidification of the connection.
  • a first preferred development of the device according to the invention is characterized in that the connecting station comprises a punching tool and / or a cutting tool, which is in the conveying direction T of the endless material web behind the cutting device for cutting the free ends of the material webs of finite length and the connecting device for connecting the cut, Free ends of the material webs of finite length are arranged, and by means of which at least one hole can be created in the overlap area.
  • the tool can be used to easily create a hole or several holes as a breakthrough in the overlap area, so that despite the thickening in the double layers, material is removed in order to achieve a reduced accumulation of material overall up to a balanced distribution of material.
  • the shape and/or size and/or positioning of the holes in the overlap area can be specifically selected in order to result in the entire overlap area and in particular to create a balanced material distribution across the width of the material web in the overlap area, which is ideally 100%. This means that any thickening caused by the overlapping connection is compensated for to the same extent by material recesses.
  • a further preferred development of the device according to the invention is characterized in that the cutting device of the connecting station is designed and set up to produce two different cutting paths, such that the free ends of the two material webs of finite length to be connected are non-complementary, in particular inverse-complementary. Due to the different and non-complementary cutting paths at both free ends to be connected, when the arrangement is offset accordingly in the conveying direction T, e.g. due to at least temporarily different transport speeds of the two material webs/film webs to be connected, defects arise in the material transversely to the conveying direction T in the width of the overlap area. The defects, i.e. areas in which no material of the material web/film web exists, can be formed regularly or irregularly across the width and along the distance of the overlap area in the conveying direction T.
  • the cutting device of the connecting station comprises at least one cutting tool which can be moved up and down vertically to the transport plane E of the material webs and which has at least one cutting edge which is not designed to be rectilinear.
  • a non-rectilinear cutting edge in the sense of the invention are wave-shaped, zigzag-shaped, tooth-shaped or meander-shaped courses.
  • Non-rectilinear refers to the cutting edge, which has elevations and depressions as seen in the conveying direction T, which, in relation to the material webs to be cut or cut, leads to wavy, zigzag, tooth-shaped or meandering free ends when viewed from above.
  • the cutting tool in addition to being able to move up and down, is designed to be movable back and forth at least transversely to the conveying direction T and/or rotatable about a vertically directed axis of rotation D, such that different cutting paths can be carried out with the cutting tool with the non-rectilinear cutting edge.
  • the offset and/or twisting of the cutting tool can cause one first material web or its free end is cut with the cutting tool, while the second material web or its free end is rotated with the same cutting tool, for example by 180 ° about an axis of rotation D, which runs vertically to the transport plane E of the transported material webs/film webs , is cut.
  • the rotation - in a corresponding manner through a transverse offset of the cutting tool - creates two non-complementary cuts which, when the free ends are arranged appropriately relative to one another, lead to a connection point with reduced thickening, namely to an overlap area with at least one opening.
  • the cutting tool has two cutting edges, of which a first cutting edge is designed to be non-rectilinear - in the sense of the invention - and the second cutting edge is designed to be rectilinear or non-rectilinear - in the sense of the invention, with the cutting path of the second cutting edge always independent of its design deviates from the cutting path of the first cutting edge. This primarily applies to the case where both cutting edges have a non-linear course.
  • the non-linear cutting edges are then designed to be offset from one another with respect to their cutting path based on the width of the material web, so that a cutting movement of the cutting tool having two cutting edges results in two non-complementary cuts, which, when the free ends are arranged accordingly relative to one another, form a connection point with reduced thickening, namely lead to an overlap area with at least one breakthrough.
  • the cutting device of the connecting station comprises two cutting tools which can be moved up and down vertically to the transport plane E of the material webs and which each have at least one cutting edge, the cutting edge of at least one cutting tool being designed to be non-rectilinear - in the sense of the invention.
  • Non-rectilinear in the sense of the invention means, as already explained elsewhere, that the cut free ends have elevations and depressions (e.g. wave-shaped, zig-zag-shaped, meander-shaped, tooth-shaped) in or against the conveying direction T, so that when they overlap and a corresponding offset of the free ends to one another forms an overlap area that is interrupted across the width of the material web.
  • the cutting tools which can preferably be controlled separately, lead to non-complementary cuts at the free ends of the material webs/film webs to be connected.
  • the task is also achieved by a method with the steps mentioned at the beginning in that an overlap area is formed and set up by means of the connecting station, which has areas of overlap on the one hand and material-free areas on the other across the width of the endless material web, the size of the areas of overlap to the size of the material-free areas in a ratio of 0.8 to 1.2, preferably from 0.9 to 1.1 and particularly preferably from 0.95 to 1.05, or it is more/larger over the entire width of the overlap area
  • There are material-free areas as areas of overlap or the areas of overlap and the material-free areas essentially correspond in terms of their size.
  • two film webs consisting at least partially of tobacco are connected to one another, with at least the free ends of the film webs to be connected being moistened, pressed and/or heated for connection.
  • the two material webs of finite length are preferably cut with different cutting paths, so that the free ends of the two material webs of finite length to be connected are non-complementary, in particular inverse-complementary.
  • the cut, free ends are aligned in the conveying direction T before connecting in such a way that the overlap area has areas of overlap on the one hand and areas free of material on the other over the width of the endless material web to be formed.
  • the free ends are advantageously connected when the overlap area is stationary or moving in the conveying direction T. This means that the free ends to be connected, which form the overlap area, are either transported during and for connection or stand still or are stopped during connection.
  • At least one hole leading through both material webs is created in the overlap area by punching and/or cutting.
  • the method is particularly preferably carried out using a device according to one or more of claims 1 to 8.
  • the device shown in the drawing is used to connect two film webs, each running from a reel and at least partially made of tobacco.
  • the device according to the invention is also suitable for connecting two material webs in the tobacco processing industry, for example for connecting two filter or wrapping paper webs or the like.
  • the device 10 is designed and set up to connect two material webs 13, 14 each running from a reel 11, 12 and comprises a first receptacle 15 for receiving a first reel 11 with a first material web 13 of finite length, a second receptacle 16 for receiving a second bobbin 12 with a material web 14 of finite length, transport means for transporting the material webs 13, 14 in the conveying direction T, and a connecting station 17 with a cutting device 18 for cutting a free, trailing end 19 (this means the rear end) of the first material web 13 and a free, leading end 20 (this means the front end) of the second material web 14, and with a connecting device 21 for connecting the two cut, free ends 19, 20 of the material webs 13, 14 of finite length to form an endless material web 22 an overlap area Ü B , the connecting station 17 being designed and set up to form an overlap area Ü B , which is provided with at least one opening 25 across the width B of the endless material web 22.
  • the transport means can be designed to transport the material webs 13, 14, 22 together or separately.
  • the material webs 13, 14 of finite length or their drive means can be controlled separately in order to be able to position the free ends 19, 20 to be connected, for example in the area of a support surface 23, one above the other or one below the other and in particular in the conveying direction T to form the overlap area Ü B .
  • the receptacles 15, 16 for the bobbins 11, 12 can be, for example, simple pins, mandrels or shafts, which can be designed to be stationary or driven.
  • the material webs 13, 14, 22 can be guided around deflection and/or guide rollers 24 for deflecting and/or guiding the individual material webs 13, 14, 22.
  • the or each deflection and/or guide roller 24 can optionally also be designed as a transport roller.
  • the device 10 is characterized according to the invention in that the connecting station 17 is designed and set up to form an overlap area Ü B , which has areas 32 of overlap across the width B of the endless material web 22 on the one hand and material-free areas 33 on the other, the size of the areas 32 of the overlap to the size of the material-free areas 33 is in a ratio of 0.8 to 1.2, preferably from 0.9 to 1.1 and particularly preferably from 0.95 to 1.05, or over the entire width of the overlap area In general , there are more/larger material-free areas 33 than areas 32 of the overlap or the areas 32 of the overlap and the material-free areas 33 essentially correspond to each other in terms of their size.
  • each breakthrough describes in particular an opening 26 which is larger than 1 mm 2 in terms of surface area.
  • the connecting station 17 is designed and set up to form an overlap area Ü B , which has areas 32 of overlap on the one hand and material-free areas 33 on the other over the width B of the endless material web 22, the size of the areas 32 of the overlap being related to the size of the material-free areas 33 in a ratio of 0.8 to 1.2 (80 to 120%), preferably from 0.9 to 1.1 (90 to 110%) and particularly preferably from 0.95 to 1.05 (95 to 105%) stands.
  • the size is synonymous with the respective area.
  • the connecting station 17 is designed and set up to form an overlap area Ü B , which has areas 32 of overlap on the one hand and material-free areas 33, i.e. openings 25, holes 26 or the like, on the other hand, across the width B of the endless material web 22, whereby The areas 32 of the overlap and the material-free areas 33 essentially correspond in terms of their size.
  • the connecting station 17 is designed exactly so that each infinitesimally small strip running over the entire width B of the material web 22 in the overlap area ÜB has an identical amount of material/an identical volume (area of the strip x thickness of the strip) of 100%, where 100% refers to the amount of a correspondingly infinitesimally small strip outside the overlap area Ü B.
  • the material accumulations due to the overlapping areas 32 on the one hand and the material-free areas 33 on the other hand can also compensate for each other along the route/length of the overlap area Ü B in the conveying direction T.
  • a thickening/accumulation of material resulting from the overlap is at least partially, ideally completely, compensated for by the openings/holes/breakthroughs/recesses (used synonymously in the context of the invention) or the like, so that an accumulation of material resulting from the overlap resulting from the connection is at least is greatly reduced or even completely balanced, so that there is no thickening/accumulation of material in the overlap area Ü B compared to areas outside the overlap area.
  • the side edges of the overlap area Ü B can be closed (see the example according to Figure 2a ) or open (see the example according to Figure 2b ) be.
  • the number of breakthroughs 25/openings 26/material-free areas 33 on the one hand and the areas 32 of the overlap/webs on the other hand can vary as desired.
  • the cut edges can have any curve shape, for example continuous or continuously differentiable in sections.
  • the free ends 19, 20 can also be of any design with regard to their cutting edge.
  • the device 10 is designed and set up as material webs 13, 14 for connecting two film webs 13a, 14a consisting at least partially of tobacco.
  • material webs 13, 14 which are at least partially, but preferably entirely, made of tobacco, particularly precise non-complementary cuts can be made on the free ends 19, 20 of the film webs 13a, 14a due to the density/mass/material thickness, so that a balanced distribution of material throughout the entire endless Material web 22 including all overlap areas Ü B is reached.
  • the connecting station 17 can, for example, comprise an embossing device and/or an adhesive device.
  • the connecting station 17 preferably comprises means 27 for moistening at least one of the free ends 19, 20 of the film webs 13a, 14a of finite length to be connected.
  • the means 27 can be designed and set up for moistening a free end 19 or 20 or both free ends 19 and 20 and/or positioned and aligned accordingly.
  • a simple solution is, for example, a spray nozzle 28 or the like, by means of which the or each free end 19, 20 is moistened and thus softened.
  • the connecting station 17 preferably comprises means 29 for pressing at least the free ends 19, 20 of the film webs 13a, 14a of finite length to be connected.
  • the connecting station 17 also includes means 31 for heating at least the free ends 19, 20 of the film webs 13a, 14a of finite length to be connected.
  • This means 31 can be, for example, a simple heat radiator or the like.
  • the means 31 is arranged behind the means 29 for connecting in the conveying direction T.
  • the at least one opening 25 or the at least one opening 26 passing through both material webs can optionally be created after connecting the free ends 19, 20 and before feeding the endless material web 22 into the area of a format (not shown) by the connecting station 17 a Punching tool and / or a cutting tool, which in the conveying direction T of the endless material web 22 behind the cutting device 18 for cutting the free ends 19, 20 of the material webs 13, 14 of finite length and the connecting device 21 for connecting the cut, free ends 19, 20 of the Material webs 13, 14 of finite length are arranged, and by means of which at least one hole 26 can be created in the overlap area Ü B.
  • a first option is created to partially or completely compensate for the accumulation of material in the overlap area ÜB .
  • a simple solution for example, is a hole punch, by means of which a hole pattern can be punched into the overlap area Ü B transversely to the conveying direction T and/or along the route/length of the overlap area Ü B in the conveying direction T.
  • knives or knife arrangements can also be provided, by means of which individual or multiple holes 26 can be cut into the overlap area ÜB .
  • the at least one opening 25 or the at least one opening 26 passing through both material webs can optionally also be created when connecting or by connecting the free ends 19, 20, in that the cutting device 18 of the connecting station 17 is designed and set up to have two different cutting paths to produce, in such a way that the free ends 19, 20 to be connected of the two material webs 13, 14 of finite length or of the two film webs 13a, 14a are non-complementary.
  • the overlapping of the free ends 19, 20 with the non-complementary cuts on the one hand and the offset of the free ends 19, 20 to one another in the conveying direction T on the other hand leads to an overlap area Ü B in which openings 25, holes 26 or the like exist.
  • the cutting device 18 of the connecting station 17 comprises at least one cutting tool 34 which can be moved up and down vertically to the transport plane E of the material webs 13, 14 and which has at least one cutting edge 35 which is not designed to be rectilinear.
  • the cutting tool 34 can be moved back and forth at least transversely to the conveying direction T and/or rotatable about a vertically directed axis of rotation D, such that the cutting tool 34 with the non-rectilinear cutting edge 35 produces different and, above all, non-complementary cutting paths are executable.
  • the material webs 13, 14 or film webs 13a, 14a or at least their free ends 19, 20 can be designed to be displaceable relative to the or each cutting tool 34.
  • the cutting tool 34 has two cutting edges 35, 36, of which a first cutting edge 35 is non-rectilinear and the second cutting edge 36 is rectilinear or non-rectilinear, the cutting path of the second cutting edge 36 always deviating from the cutting path of the first cutting edge 35, regardless of its design.
  • the cutting device 18 of the connecting station 17 comprises two cutting tools 34, 37 which can be moved up and down vertically to the transport plane E of the material webs 13, 14 and which each have at least one cutting edge 35, 38, the cutting edge 35 of at least one cutting tool 34 being non-rectilinear.
  • the two cutting tools 34, 37 can preferably be controlled separately.
  • a standing knife with a zigzag-shaped cutting edge can be provided.
  • a movable knife with a correspondingly designed cutting edge is designed to be linear or pivotable about an axis towards and away from the stationary knife.
  • the material web 13, 14 to be cut can be conveyed between the two knives, for example by means of a vertical conveyor.
  • This knife arrangement is, on the one hand, for a first free end 19 of the first material web 13 and, on the other hand, structurally identical but non-complementary, in particular inversely complementary (axisymmetrically mirrored with a mirror axis S aligned transversely to the conveying direction T) for a second free end 20 of the material web 14 intended.
  • two knife arrangements with non-complementary cutting paths are provided for cutting the free ends 19, 20.
  • the endless material web 22 formed by means of the device 10 can be fed directly to the format to form an endless strand.
  • the device 10 in the conveying direction T preferably comprises a storage unit (not shown) behind the heating means 31 for receiving a finite amount of the endless material web 22.
  • the material web 22 is wound around several guide rollers, some of which can be moved up and down, around the transport route to shorten or lengthen the material web. Different things can be done with the storage unit Transport speeds are balanced.
  • the memory unit also serves to temporarily shut down the overlap area Ü B , for example for the connection process, without affecting the overall operating speed.
  • the procedure is explained in more detail below using the drawing.
  • the method is used to connect two material webs 13, 14 each unwound from a reel 11, 12. These material webs 13, 14 are provided and transported in the conveying direction T. Before or during the transport of the material webs 13, 14, these two superimposed webs are aligned with one another. When the two material webs 13, 14 are aligned with one another, the two material webs 13, 14 are cut, so that a trailing end 19 of the first material web 13 and a leading end 20 of the second material web 14 are created. The two cut, free ends 19, 20 of the material webs 13, 14 of finite length are then connected to one another to form an endless material web 22, forming an overlap area Ü B.
  • connection takes place by means of a connection station 17, with at least one breakthrough being created in the overlap area ÜB .
  • the or each breakthrough 25 in the overlap area Ü B can be created when connecting the free ends 19, 20 or after connecting.
  • the overlap area Ü B can be generated, for example, by different transport speeds of the two material webs 13, 14, so that the free ends 19, 20 are offset from one another in the conveying direction T.
  • This method is characterized according to the invention in that an overlap area Ü B is formed and set up by means of the connecting station 17, which has areas 32 of overlap on the one hand and material-free areas 33 on the other hand over the width B of the endless material web 22, the size of the areas 32 of Overlap to the size of the material-free areas 33 is in a ratio of 0.8 to 1.2, preferably from 0.9 to 1.1 and particularly preferably from 0.95 to 1.05 or it is over the entire width of the overlap area Ü B Seen more/larger material-free areas 33 than areas 32 of the overlap or the areas 32 of the overlap and the material-free areas 33 essentially correspond in terms of their size overall.
  • two film webs 13a, 14a consisting at least partially of tobacco are connected to one another, with at least the free ends 19, 20 of the film webs 13a, 14a to be connected being moistened, pressed and/or heated for connection.
  • the two material webs 13, 14 or film webs 13a, 14a of finite length are cut with different cutting paths, so that the free ends of the two material webs of finite length to be connected are non-complementary, in particular inverse-complementary.
  • the free ends 19, 20 cut in this way are aligned in the conveying direction T before connecting so that the overlap area Ü B has areas 32 of overlap on the one hand and material-free areas 33 on the other hand over the width B of the endless material web 22 to be formed.
  • the free ends 19, 20 can optionally be connected with the overlap area Ü B stationary or moving in the conveying direction T. In the event that the overlap area Ü B is slowed down or even stopped completely during connection, the subsequent operation can be maintained by the material web 22 stored in the storage unit.
  • Figure 5 shows an embodiment of a bobbin provision device 100, which has a turntable 101 with two receptacles 15, 16, preferably designed as receiving mandrels, onto which the bobbins 11, 12 can be pushed on the front side.
  • the bobbins can be provided with a bobbin lock, which is either in the form of a band or a sticker.
  • the opening of the bobbin lock can optionally be carried out automatically and a free end 20 of the material web wound on the bobbin can be loosened and unwound, preferably by at least the length of the radius of the bobbin. After releasing this free end 20 of the material web 14, the free end 20 hangs down due to gravity.
  • a gripper arm 105 Adjacent to the reel supply device 100, preferred A gripper arm 105 is arranged adjacent to the turntable 101. This gripper arm 105 is in Figure 6 shown.
  • the gripping arm 105 has a preferably rotatably mounted, elongated base body 106, with a holding profile 107 being arranged at one end of the base body 106 or at least in the end region of the base body 106, which can preferably be subjected to negative pressure. Due to the rotational movement of the elongated base body 106, the holding profile 107 is guided along the free ends 20 of the material web 14, the free end 20 of the material web 14 is sucked in by the negative pressure on the holding profile 107 and fixed to the holding profile 107.
  • the force for peeling or unwinding a material web 14 from a reel 11 can be between 5 N and 15 N, preferably essentially 10 N.
  • the holding profile 107 is preferably subjected to a negative pressure, which has a counterforce of 20 N to 30 N, preferably 25 N, withstands.
  • the holding force is particularly preferably greater than the film tensile strength.
  • the holding profile 107 is optionally rotatably mounted, can optionally be actively pneumatically aligned or optionally has a constant orientation.
  • Figure 7 and Figure 8 show a further embodiment of a device according to the invention with two separate cutting tools for cutting the free ends 19, 20 of the material webs 13, 14.
  • the free end 20 of the material web 14 is fed, for example, by a gripper arm 105 to the connecting station 17 and by a vacuum device on corresponding holding plates 110 sucked in.
  • These holding plates 110 preferably have suction holes 111 for sucking in the material web 13, 14.
  • the cutting device 18 has two cutting tools 112, 113, each of which has two cutting blades 114, 115, 116, 117.
  • the cutting blade 115 is preferably designed to be movable, foldable or pivotable and is arranged outside the conveying path of the material webs 13, 14, so that the material webs 13, 14 can be threaded smoothly. As soon as the material web 14 is threaded and is fixed to the holding surfaces 110 by the negative pressure, the cutting blade 115 moves, preferably pivots, into a working position and, through a further movement in the direction of the second cutting blade 114, cuts the material web 14 to create the free end 20 through.
  • the free end 20 is provided with a special contour which corresponds to the design of the cutting blades 114, 115.
  • the cutting blade 115 moves back to the original working position and moves out Conveying path of the material web 13, 14 in order not to hinder the further work process.
  • the cutting blade 116 of the second cutting tool 113 is in Figure 7 shown in extended position. Furthermore, in Figure 7 not shown the endless material web 22 passing the second cutting tool 113.
  • a moistening device 120 moves out in order to moisten the free end 20 of the material web 14. Moistening can be carried out either with water or a composite material, for example glue or adhesive.
  • the endless material web 22, which in Figure 7 is not shown, cut by the cutting tool 113 through the interaction of the cutting blades 116, 117 and the free end 19 of the finite material web 13 is produced.
  • the cutting blade 116 moves, preferably pivots, into a working position and moves in the direction of the cutting blade 117 in order to carry out the cut.
  • the cutting blade 116 moves back into the working position and moves, preferably pivots, out of the conveying path of the material web 13, 14, 22.
  • the two cutting tools 113, 114 are preferably arranged offset from one another in the conveying direction T of the material web 13, 14, 22, so that An overlap area Ü B is formed by a movement of the free ends 19, 20 of the material web 13, 14 that is essentially orthogonal to the conveying direction T.
  • the material web 22 Before the endless material web 22 is cut by the cutting tool 113, the material web must be stopped in the area of the connecting station 17, since the cut and connection can only take place when the material webs 13, 14, 22 are at a standstill. This standstill of the material web is achieved using a tube storage 130, which is in Figure 9 shown is implemented.
  • connection station 17 shown on the right is designed to be movable in the horizontal direction, in particular orthogonal to the conveying direction T.
  • This part 120 of the connection station 17 preferably has a heating device with which the free ends 19, 20 of the material webs 13, 14 are to be pressed against one another in the overlap area Ü B , in order to optionally create a connection of the material webs 13, 14 in the overlap area Ü B under the influence of heat from the heat source.
  • the part 120 of the connection station 17 moves into the original position and the ends 19, 20 are connected to one another to form an endless material web 22.
  • hose storage 130 shown can be used.
  • the material web 22 is guided in a meandering manner through the deflection bolts 134, 135 in order to produce a supply of the material web.
  • This tube storage 130 is arranged downstream of the connection station 17 in the conveying direction T in order to unwind the formed supply from the material web when the connection of the material webs 13, 14 is created in the connection station 17.
  • the deflection bolts 134, 135 are divided into two groups, an upper group of bolts 134 and a lower group of bolts 135.
  • These groups of bolts 134, 135 are preferably guided on guides 136 and 137, respectively, and are preferably orthogonal to the conveying direction T of the material web 22 designed to be movable.
  • the group of deflection bolts 134 can be moved upwards and the group of deflection bolts 135 can be moved downwards. If the groups of deflection bolts 134, 135 move away from each other, the supply of the material web 22 in the tube storage 130 increases. This process is carried out slowly before the running material web 13 has completely expired, so that if a connection of the material webs 13, 14 has to be carried out, the Hose storage 130 is filled.
  • the material web Before making the connection, the material web must be stopped in the connection station and the groups of deflection bolts 134, 135 in the hose storage 130 slowly move towards each other into the original position.
  • the speed of the movable deflection bolts is controlled and/or regulated in such a way that the speed of the material web 22, which leaves the tube storage 130 in the conveying direction T, is essentially constant over the entire connection process.

Landscapes

  • Replacement Of Web Rolls (AREA)

Claims (13)

  1. Dispositif (10), configuré et adapté pour relier deux rubans de matière (13, 14) se déroulant respectivement d'une bobine (11, 12), comprenant un premier logement (15) pour recevoir une première bobine (11) avec un premier ruban de matière (13) de longueur finie, un deuxième logement (16) pour recevoir une deuxième bobine (12) avec un ruban de matière (14) de longueur finie, des moyens de transport pour transporter les rubans de matière (13, 14) dans la direction de transport T, ainsi qu'un poste de jonctionnement (17) avec un dispositif de coupe (18) pour couper une extrémité libre arrière (19) du premier ruban de matière (13) et une extrémité libre avant (20) du deuxième ruban de matière (14), et avec un dispositif de jonctionnement (21) pour relier les deux extrémités libres coupées (19, 20) des rubans de matière (13, 14) de longueur finie en un ruban de matière sans fin (22) en formant une zone de chevauchement (ÜB), le poste de jonctionnement (17) étant configuré et adapté pour former une zone de chevauchement (ÜB) qui est pourvue d'au moins une percée (25) sur la largeur (B) du ruban de matière sans fin (22), caractérisé en ce que le poste de jonctionnement (17) est configuré et adapté pour former une zone de chevauchement (ÜB) qui présente, sur la largeur (B) du ruban de matière sans fin (22), des zones (32) de chevauchement d'une part et des zones sans matière (33) d'autre part, la taille des zones (32) de chevauchement par rapport à la taille des zones (33) sans matière étant dans un rapport de 0,8 à 1,2, de préférence de 0,9 à 1,1 et de manière particulièrement préférée de 0,95 à 1,05, ou bien il y a, vu sur toute la largeur de la zone de chevauchement (ÜB), plus de/de plus grandes zones (33) sans matière que de zones (32) de chevauchement, ou bien les zones (32) de chevauchement et les zones (33) sans matière se correspondent essentiellement en ce qui concerne leur taille au total.
  2. Dispositif (10) selon la revendication 1, caractérisé en ce que le dispositif (10) est configuré et adapté pour relier deux laizes de pellicule (13a, 14a) constituées au moins partiellement de tabac en tant que rubans de matière (13, 14).
  3. Dispositif (10) selon la revendication 2, caractérisé en ce que le poste de jonctionnement (17) comprend des moyens (27) pour humidifier au moins une des extrémités libres (19, 20) à relier des laizes de pellicule (13a, 14a) de longueur finie.
  4. Dispositif (10) selon la revendication 2 ou 3, caractérisé en ce que le poste de jonctionnement (17) comprend des moyens (29) pour presser au moins les extrémités libres (19, 20) à relier des laizes de pellicule (13a, 14a) de longueur finie.
  5. Dispositif (10) selon une ou plusieurs des revendications 2 à 4, caractérisé en ce que le poste de jonctionnement (17) comprend des moyens (31) pour chauffer au moins les extrémités libres (19, 20) à relier des laizes de pellicule (13a, 14a) de longueur finie.
  6. Dispositif (10) selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que le poste de jonctionnement (17) comprend un outil de poinçonnage et/ou un outil de coupe qui, dans la direction de transport T du ruban de matière sans fin (22), est agencé après le dispositif de coupe (18) pour couper les extrémités libres (19, 20) des rubans de matière (13, 14) de longueur finie et le dispositif de jonctionnement (21) pour relier les extrémités libres coupées (19, 20) des rubans de matière (13, 14) de longueur finie, et au moyen duquel au moins un trou (26) peut être produit dans la zone de chevauchement (ÜB).
  7. Dispositif (10) selon une ou plusieurs des revendications 1 à 6, caractérisé en ce que le dispositif de coupe (18) du poste de jonctionnement (17) est configuré et adapté pour produire deux tracés de coupe différents, de telle sorte que les extrémités libres (19, 20) à relier des deux rubans de matière (13, 14) de longueur finie soient non complémentaires, notamment inversement complémentaires.
  8. Dispositif (10) selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que le dispositif de coupe (18) du poste de jonctionnement (17) comprend deux outils de coupe (34, 37) mobiles vers le haut et vers le bas verticalement par rapport au plan de transport (E) des rubans de matière (13, 14), qui présentent chacun au moins une arête de coupe (35, 38), l'arête de coupe (35) d'au moins un outil de coupe (34) étant configurée sous forme non rectiligne.
  9. Procédé pour relier deux rubans de matière (13, 14) respectivement dévidées d'une bobine (11, 12), comprenant les étapes suivantes :
    - la fourniture du premier et du deuxième ruban de matière (13, 14),
    - le transport des rubans de matière (13, 14) dans la direction de transport T,
    - l'alignement des deux rubans de matière superposés (13, 14) l'un par rapport à l'autre,
    - la coupe des deux rubans de matière (13, 14) de manière à obtenir une extrémité arrière (19) du premier ruban de matière (13) et une extrémité avant (20) du deuxième ruban de matière (14),
    - le jonctionnement des deux extrémités libres coupées (19, 20) des rubans de matière (13, 14) de longueur finie en un ruban de matière sans fin (22) en formant une zone de chevauchement (ÜB) au moyen d'un poste de jonctionnement (17), au moins une percée (25) étant produite dans la zone de chevauchement (ÜB), caractérisé en ce qu'une zone de chevauchement (ÜB) est configurée et adaptée au moyen du poste de jonctionnement (17), laquelle présente sur la largeur (B) du ruban de matière sans fin (22) des zones (32) de chevauchement d'une part et des zones sans matière (33) d'autre part, la taille des zones (32) de chevauchement par rapport à la taille des zones (33) sans matière étant dans un rapport de 0,8 à 1,2, de préférence de 0,9 à 1,1 et de manière particulièrement préférée de 0,95 à 1,05, ou bien il y a, vu sur toute la largeur de la zone de chevauchement (ÜB), plus de/de plus grandes zones (33) sans matière que de zones (32) de chevauchement, ou bien les zones (32) de chevauchement et les zones (33) sans matière se correspondent essentiellement en ce qui concerne leur taille au total.
  10. Procédé selon la revendication 9, caractérisé en ce que deux laizes de pellicule (13a, 14a) constituées au moins partiellement de tabac sont reliées entre elles, au moins les extrémités libres (19, 20) à relier des laizes de pellicule (13a, 14a) étant humidifiées, comprimées et/ou chauffées pour le jonctionnement.
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que les deux rubans de matière (13, 14) de longueur finie sont coupées avec des tracés de coupe différents, de telle sorte que les extrémités libres (19, 20) à relier des deux rubans de matière (13, 14) de longueur finie soient non complémentaires, notamment inversement complémentaires.
  12. Procédé selon une ou plusieurs des revendications 9 à 11, caractérisé en ce que les extrémités libres coupées (19, 20) sont orientées dans la direction de transport T avant le jonctionnement de telle sorte que la zone de chevauchement (ÜB) présente, sur la largeur (B) du ruban de matière sans fin (22) à former, des zones (32) de chevauchement d'une part et des zones (33) sans matière d'autre part.
  13. Procédé selon une ou plusieurs des revendications 9 à 12, caractérisé en ce qu'après la coupe des deux rubans de matière (13, 14) de longueur finie et après le jonctionnement des deux extrémités libres coupées (19, 20), au moins un trou (26) traversant les deux rubans de matière (13, 14) est produit dans la zone de chevauchement (ÜB) par poinçonnage et/ou coupe.
EP20180319.4A 2019-06-26 2020-06-16 Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine Active EP3757046B1 (fr)

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DE102019117180.6A DE102019117180A1 (de) 2019-06-26 2019-06-26 Vorrichtung und Verfahren zum Verbinden von zwei jeweils von einer Bobine ablaufenden Materialbahnen

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EP3453660B1 (fr) * 2017-09-07 2020-12-02 Sidel Participations Procédé d'épissage de bandes

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EP4282797A3 (fr) 2024-01-10
EP3757046A1 (fr) 2020-12-30
EP4282797A2 (fr) 2023-11-29
PL3757046T3 (pl) 2024-03-25
CN112141780A (zh) 2020-12-29

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