EP3757046A1 - Dispositif et procédé de raccordement de deux bandes de matière se déroulant d'une bobine - Google Patents

Dispositif et procédé de raccordement de deux bandes de matière se déroulant d'une bobine Download PDF

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Publication number
EP3757046A1
EP3757046A1 EP20180319.4A EP20180319A EP3757046A1 EP 3757046 A1 EP3757046 A1 EP 3757046A1 EP 20180319 A EP20180319 A EP 20180319A EP 3757046 A1 EP3757046 A1 EP 3757046A1
Authority
EP
European Patent Office
Prior art keywords
webs
cutting
material web
free ends
finite length
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.)
Granted
Application number
EP20180319.4A
Other languages
German (de)
English (en)
Other versions
EP3757046B1 (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
Hauni Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau 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 webs of material each running off 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 finer Length into an endless material web with the formation of an overlap area.
  • the invention relates to a method for connecting two material webs, each unwound from a reel, comprising the steps: providing the first and second material webs, transporting the two material webs in conveying direction T, aligning the two material webs lying one above the other, cutting the two material webs, see above that a trailing end of the first material web and a leading end of the second material web are created, joining the two cut, free ends of the material webs of finite length to form an endless material web with the formation of an overlap area.
  • Such devices and methods are used in the tobacco-processing industry, in particular also in the production of so-called "heat-not-burn” products, in order to provide endless webs of material for the uninterrupted maintenance of the production of endless strands.
  • 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 the same in conveying direction T, a second reel with a material web of finite length is transported in conveying direction T and positioned to the first material web.
  • the two material webs more precisely the trailing end, i.e. the rear end of the first material web currently in production and the leading end, i.e.
  • the front end of the new, still fully wound material web are aligned and cut to each other and then connected to one another to form an endless material web will.
  • 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 is 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 in the production of "heat-not-burn" products, the film webs consisting at least partially of tobacco are thick and correspondingly heavy. Since the bobbins on which the film webs are wound only have a limited capacity, i.e. the size of the bobbin is limited, this leads to a particularly frequent change of the bobbins, with the result that material webs with connection points, which also have splice points, at short intervals must be transported through a format precisely dimensioned for a strand to be manufactured.
  • the previously known methods and devices for connecting two material webs each unwound from a reel have connecting stations with a cutting device by means of which either a right-angled cut (transverse to the conveying direction of the material webs) or a diagonal cut is made.
  • the known cutting devices are only designed to perform so-called complementary cuts. This means that the cut edges of the material webs produced by the cutting device fit into or onto one another according to the key-lock principle or - in addition to one another - can be fitted onto one another.
  • the free ends of the material webs cut transversely or diagonally or in some other complementary manner are placed one on top of the other and connected to form an endless material web to form an overlap area.
  • the endless material webs are guided through the aforementioned format in which and through which the endless material web is formed into an endless strand with an essentially round cross-section.
  • endless strands from film webs consisting at least partially of tobacco, these are e.g. cut into strips and formed into a continuous strand.
  • the material web / film web has a thickening in the overlapping area that is closed over the width of the material web, that must be transported through the format.
  • the overlap area is accordingly at least partially double-layered over the width of the material web and closed over the entire area.
  • the endless material web formed therefrom is at least partially double-layered.
  • rectangular free ends are created which, if they overlap, lead to an overlap area in which a uniform double layer is formed over the entire length of the overlap in conveying direction T, which leads to a considerable thickening that must be transported through 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 overlapping area, so that, viewed over the entire width of the material web, there is still a thickening in the overlapping area.
  • the double layer results in an accumulation of material compared to the material web outside the overlap area of up to approx. 150%.
  • This accumulation of material leads to an uneven run of the strand due to the format which is set up exactly to the desired diameter of the continuous strands to be formed.
  • the accumulation of material can lead to a jolt in the endless material web or the strand to be formed, which in turn can lead to the material web tearing.
  • the accumulations of material that must be "forced" by the format can continue to lead to damage to a format tape guided in the format and / or the material web and / or the strand to be formed.
  • the object on which the invention is based now consists in creating a device which ensures a connection of free ends of two material webs which reduces the thickening of the endless material web in the overlap region.
  • the task is also to propose an appropriate procedure.
  • the connecting station is designed and set up to form an overlap area which is provided with at least one opening over the width of the endless material web.
  • 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 separating both material webs in the overlap area, occurs before or after connecting the two free ends, the thickening of the endless material web is reduced, thereby reducing the disadvantages of the prior art described above to be overcome.
  • the connecting station With the design of the connecting station to produce 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 ensures that the endless material web is transported through the format that is gentle on the continuous material web and the format.
  • a breakthrough in the context of the invention is understood to mean in particular any opening or the like with an extension greater than 1 mm 2 .
  • the device for connecting two film webs consisting at least partially of tobacco is particularly preferably designed and set up as material webs.
  • the effect of the even material distribution over the length and width of the endless material web including the overlap area is particularly evident.
  • the connecting station advantageously 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 for moistening one or both free ends and is set up, ensures a particularly firm connection of the film webs to be spliced.
  • the supply of liquid, for example water, glycerine, propylene glycol or the like, to at least one of the free ends moisturizes and softens the material of the tobacco-containing or tobacco-made film webs, whereby the process of connecting the two film webs for a firm and secure connection is supported.
  • the connecting station particularly preferably comprises means for pressing at least the free ends of the film webs of finite length to be connected. As a result, a particularly firm and stable connection between the free ends of two film webs is achieved.
  • the connecting station preferably comprises means for heating at least the free ends of the film webs of finite length to be connected.
  • connection station is designed and set up to form an overlap area which has areas of overlap on the one hand and material-free areas on the other hand, 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.
  • there are more / larger areas of the overlap viewed over the entire width of the overlap area than areas of the overlap for particularly good stability and in other embodiments there are more / larger areas of the overlap viewed over the entire width of the overlap area than areas of the overlap for one optimized material reduction in the overlap area.
  • a particularly preferred development is characterized in that the connecting station is designed and set up to form an overlap area which has areas of overlap on the one hand and material-free areas on the other hand, the areas of overlap and the material-free areas differing in size over the width of the endless material web essentially correspond in total.
  • the size corresponds to the respective area. This ensures an optimal material distribution across the width of the material web and also Reached over the distance of the overlap area in 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 produced by the double layers is completely compensated for by the holes, breakthroughs or the like, so that an amount of material that is identical in width / circumference is always transported through the format.
  • the volume of each infinitesimally small strip formed from the area of an infinitesimally small strip of material web running over the entire width multiplied by the (in each case 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 overlapping area / imperfections of material in the overlapping area, so that ideally no thickening occurs at all.
  • 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, in the conveying direction T of the endless material web, is behind the cutting device for cutting the free ends of the material webs of finite length and the connecting device for connecting the cut, is arranged free ends of the material webs of finite length, and by means of which at least one hole can be produced 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 total of reduced material accumulation and even material distribution.
  • the shape and / or size and / or positioning of the holes in the overlap area can be specifically selected in order to create a balanced material distribution over the entire overlap area and in particular also over the width of the material web in the overlap area, which ideally is 100%. This means that any thickening caused by the overlapping connection is compensated to the same extent by material recesses.
  • the cutting device of the connecting station is designed and set up to generate two different cutting courses, such that the to connecting free ends of the two material webs of finite length are not complementary, in particular inversely complementary. Due to the different and non-complementary cuts at the two free ends to be connected, there are flaws in the material across the width of the overlap area when the arrangement is offset 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. The imperfections, that is to say areas in which there is no material web / film web, can be formed regularly or irregularly over the width and along the length 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 has at least one cutting edge that is not linear.
  • a non-straight cutting edge within the meaning of the invention are wave-shaped, zigzag-shaped, tooth-shaped or meander-shaped courses.
  • Non-rectilinear refers to the cutting edge which, viewed in the conveying direction T, has elevations and depressions, which leads to undulating, zigzag, tooth-shaped or meandering free ends with reference to the material webs to be cut or cut in plan view.
  • the cutting tool is advantageously 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 the cutting tool with the non-rectilinear cutting edge can be used to make different cuts.
  • a first material web or its free end can be cut with the cutting tool, while the second material web or its free end can be cut with the same cutting tool, for example by 180 ° around an axis of rotation D, which is vertical runs to the transport level E of the transported material webs / film webs, is rotated, is cut.
  • the cutting tool has two cutting edges, of which a first cutting edge is non-straight - in the sense of the invention - and the second cutting edge is straight or non-straight - in the sense of the invention - the cut of the second cutting edge is always independent of its design deviates from the cutting path of the first cutting edge. This applies primarily to the case that both cutting edges have a non-linear profile.
  • the non-linear cutting edges are then offset from one another with regard to their cutting path based on the width of the material web, so that with a cutting movement of the cutting tool having two cutting edges, two non-complementary cuts result which, with a corresponding arrangement of the free ends to one another, form a connection point with reduced thickening, namely lead to an overlapping area with at least one opening.
  • the cutting device of the connecting station comprises two cutting tools that can be moved up and down vertically to the transport plane E of the material webs, each of which has at least one cutting edge, the cutting edge of at least one cutting tool being non-linear - within the meaning of the invention.
  • Non-straight in the sense of the invention means, as already explained elsewhere, that the cut free ends in or against the conveying direction T have elevations and depressions (e.g. wave-shaped, zigzag-shaped, meander-shaped, tooth-shaped) so that if they overlap and a corresponding offset of the free ends to one another forms an overlap area interrupted over the width of the material web.
  • the cutting tools which are preferably separately controllable, lead to non-complementary cuts at the free ends of the material webs / film webs to be connected.
  • the object is also achieved by a method with the steps mentioned at the outset in that at least one opening is produced in the overlap area.
  • two film webs consisting at least partially of tobacco are connected to one another, at least the free ends of the film webs to be connected being moistened, pressed and / or heated for connecting.
  • the two material webs of finite length are preferably cut with different cutting profiles, so that the free ends to be connected of the two material webs of finite length are non-complementary, in particular inversely complementary.
  • the cut, free ends are aligned in the conveying direction T prior to joining so that the overlap area has areas of overlap on the one hand and material-free areas on the other across the width of the endless material web to be formed.
  • the free ends (19, 20) are advantageously connected when the overlapping 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 optionally transported during and for connection or stand still or are stopped during connection.
  • the method is particularly preferably carried out with a device according to one or more of claims 1 to 13.
  • the device shown in the drawing serves to connect two film webs each running from a reel and consisting at least partially of tobacco.
  • the device according to the invention is also suitable for joining two material webs in the tobacco processing industry, e.g. for joining two filter or wrapping paper webs or the like, suitable.
  • the device 10 is designed and set up for connecting two material webs 13, 14 each running off 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 one second reel 12 with a material web 14 of finite length, transport means for transporting the material webs 13, 14 in the conveying direction T, as well as a Connection 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 with the formation of an overlap area UB.
  • the transport means can be designed for the joint or separate transport of the material webs 13, 14, 22.
  • 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, e.g. in the area of a support surface 23, one above the other or one below the other and in particular offset from one another in the conveying direction T to form the overlap area Ü B .
  • the receptacles 15, 16 for the reels 11, 12 can be, for example, simple pins, mandrels or shafts that can be fixed 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 is provided with at least one opening 25 over the width B of the endless material web 22.
  • each opening describes in particular an opening 26 which is larger than 1 mm 2 in terms of its surface area.
  • Figure 1a to c For a better understanding of the invention are in Figure 1a to c initially shown connected to an endless material web 22 free ends 19, 20, which were cut with a cutting device 18 of a conventional connecting station 17 of the prior art.
  • the complementary cuts of the known connecting station 17 result in the free ends 19, 20 being closed over the entire width B of the material web 22 when they are connected Form overlap area Ü B.
  • Figure 2 a and b are shown connected to an endless material web 22 free ends 19, 20, which are processed with a connecting station 17 according to the invention of the prior art.
  • a thickening / accumulation of material resulting from the overlap is at least partially, ideally completely compensated for by the openings / holes / breakthroughs / recesses (are used synonymously within the meaning of the invention) or the like, so that an accumulation of material resulting from the overlap and resulting material accumulation 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 with areas outside the overlap area.
  • the side edges of the overlap area Ü B can be closed (see example according to Figure 2a ) or open (see example according to Figure 2b ) be.
  • the number of openings 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 cutting edges can have any curve shape, for example continuously or continuously differentiable in sections.
  • the free ends 19, 20 can also be designed as desired with regard to their cutting edge.
  • the device 10 is particularly preferably designed and set up as material webs 13, 14 for connecting two film webs 13a, 14a consisting at least partially of tobacco.
  • these film webs 13a, 14a which are at least partially, but preferably completely, made of tobacco, particularly precise non-complementary cuts can be made at 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 endless Material web 22 including all overlap areas Ü B is achieved.
  • the connecting station 17 can comprise, for example, 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 means 29, for example a pair of rollers 30 which press from above and below against the overlap area Ü B is arranged in the conveying direction T behind the means 27 for moistening.
  • the connecting station 17 also comprises 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 for example be a simple heat radiator or the like.
  • the means 31 is arranged in the conveying direction T behind the means 29 for connecting.
  • the or each opening 25 in the overlap area Ü B forms at least a partial compensation for the thickening / material accumulation formed by the overlap.
  • the connecting station 17 is preferably 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 hand over the width B of the endless material web 22, the size of the areas 32 of the overlap to the size of the material-free areas 33 in a ratio from 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 particularly preferably designed and set up to form an overlap area Ü B , which over the width B of the endless material web 22 has areas 32 of the overlap on the one hand and material-free areas 33, i.e. openings 25, holes 26 or the like, on the other hand, the areas 32 essentially correspond to the overlap and the material-free areas 33 in terms of their size.
  • the connection station 17 is designed exactly so that each infinitesimally small
  • the strip over the entire width B of the material web 22 running in the overlap area Ü B has an identical amount of material / an identical volume (area of the strip x thickness of the strip) of 100%, 100% being the amount of a correspondingly infinitesimally small strip outside the overlap area Ü B relates.
  • the accumulations of material 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 overlapping area Ü B in the conveying direction T.
  • the at least one opening 25 or the at least one opening 26 going through both material webs can optionally be produced 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 comprises 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 is arranged, and by means of which at least one hole 26 can be produced 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 Ü B.
  • a simple solution is, for example, a punch, by means of which a hole pattern can be punched in the overlap area Ü B transversely to the conveying direction T and / or along the path / length of the overlapping area Ü B in conveying direction T.
  • knives or knife arrangements can also be provided, by means of which individual or more holes 26 can be cut in the overlapping area Ü B.
  • the at least one breakthrough 25 or the at least one opening 26 extending through both material webs can optionally also be produced when connecting or connecting the free ends 19, 20 by designing and setting up the cutting device 18 of the connecting station 17, two different cutting courses to be generated 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 not complementary.
  • the overlapping of the free ends 19, 20 with the non-complementary cuts on the one hand and the offsetting of the free ends 19, 20 to one another in the conveying direction T on the other hand results in a 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 has at least one cutting edge 35 that is not linear.
  • the cutting tool 34 is preferably 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 the cutting tool 34 with the non-straight cutting edge 35 can be used to cut different and, above all, non-complementary cuts 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-straight and the second cutting edge 36 is straight or non-straight, 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 each have at least one cutting edge 35, 38, the cutting edge 35 of at least one cutting tool 34 being non-straight.
  • the two cutting tools 34, 37 can preferably be controlled separately.
  • a standing knife with a zig-zag-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, structurally identical for a first free end 19 of the first material web 13 and, on the other hand, not complementary, in particular inversely complementary (axially symmetrical mirrored with a mirror axis S aligned transversely to the conveying direction T) provided for a second free end 20 of the material web 14.
  • two knife arrangements with non-complementary cut profiles 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 for forming an endless strand.
  • the device 10 comprises in the conveying direction T, preferably behind the means 31 for heating, a storage unit (not shown) 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 path to shorten or lengthen the material web. Different transport speeds can be compensated for with the storage unit.
  • the storage unit also serves to shut down the overlap area U B briefly, for example for the connection process, without affecting the overall operating speed.
  • the method serves 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 superposed 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 produced. Subsequently, the two cut free ends 19, 20 of the webs 13, 14 of finite length to an endless material web 22 to form an overlap region Ü B are joined together.
  • 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 in that at least one opening 25 is produced in the overlap region U B.
  • the or each opening 25 in the overlap area Ü B can be produced when the free ends 19, 20 are connected or after the connection.
  • two film webs 13a, 14a consisting at least partially of tobacco are connected to one another, at least the free ends 19, 20 of the film webs 13a, 14a to be connected being moistened, pressed and / or heated for connecting.
  • the two material webs 13, 14 or film webs 13a, 14a of finite length are preferably cut with different cutting profiles, so that the free ends of the two material webs of finite length to be connected are not complementary, in particular inversely complementary.
  • the free ends 19, 20 cut in this way are aligned in the conveying direction T before joining so that the overlap area Ü B 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 to be formed.
  • the free ends 19, 20 can optionally be connected with the overlapping area Ü B standing or moving in the conveying direction T.
  • 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 at the front.
  • the reels can be provided with a reel lock, which is optionally designed in the form of a banderole or a sticker.
  • the reel lock can optionally be opened automatically and a free end 20 of the web of material wound on the reel can be loosened and unwound, preferably to at least the length of the radius of the reel. After this free end 20 of the material web 14 is released, the free end 20 hangs due to gravity downward.
  • a gripping arm 105 is arranged adjacent to the bobbin provision device 100, preferably adjacent to the turntable 101.
  • This gripping arm 105 is in Figure 6 shown.
  • the gripping arm 105 has an elongated base body 106, preferably rotatably mounted, 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.
  • the holding profile 107 is guided along the free ends 20 of the material web 14, and the free end 20 of the material web 14 is sucked in by the negative pressure on the holding profile 107 and fixed on the holding profile 107.
  • the force for peeling off 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 tensile strength of the film.
  • the holding profile 107 is optionally rotatably mounted, can optionally be actively pneumatically aligned or optionally has a constant alignment.
  • 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 gripping arm 105 to the connection station 17 and by a vacuum device on corresponding holding plates 110 sucked in.
  • These holding plates 110 preferably have suction bores 111 for sucking 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 threading of the material webs 13, 14 can take place 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 swivels, into a working position and, by 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 After the first cut has been made, the The cutting blade 115 returns to the original working position and moves out of the conveying path of the material web 13, 14 so as not to hinder the further working process.
  • the cutting blade 116 of the second cutting tool 113 is in Figure 7 shown in the extended position. Furthermore, in Figure 7 the endless material web 22 is not shown, which passes the second cutting tool 113.
  • a moistening device 120 (not shown) moves out in order to moisten the free end 20 of the material web 14.
  • the moistening can optionally be carried out with water or a composite, for example glue or glue.
  • the endless material web 22, which in FIG 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 swivels, out of the conveying path of the material web 13, 14, 22.
  • the two cutting tools 113, 114 are preferably offset from one another in the conveying direction T of the material web 13, 14, 22 so that by a movement of the free ends 19, 20 of the material web 13, 14 that is essentially orthogonal to the conveying direction T, an overlap region Ü B is formed.
  • connection station 17 shown on the right is designed to be movable in the horizontal direction, in particular orthogonally 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 onto one another in the overlap area O B , to optionally under the action of the heat from the heat source a To produce connection of the material webs 13,14 in the overlap area Ü B.
  • 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.
  • an in Figure 9 shown hose storage 130 to use.
  • the material web 22 is guided in a meandering shape through the deflection bolts 134, 135 in order to generate a supply of the material web.
  • This tube storage 130 is arranged downstream of the connecting 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 produced in the connecting station 17.
  • the deflection bolts 134, 135 are divided into zero 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 one another, the supply of material web 22 in tube storage 130 increases. This process is carried out slowly before the running material web 13 has run down completely, so that when the material webs 13, 14 are connected, the Hose storage 130 is filled.
  • the material web is to be stopped in the connection station and the groups of deflection bolts 134, 135 in the hose store 130 slowly move towards one another 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 device 130 in the conveying direction T, is essentially constant over the entire connection process.

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  • Replacement Of Web Rolls (AREA)
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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23202468.7A EP4282797A3 (fr) 2019-06-26 2020-06-16 Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine

Applications Claiming Priority (1)

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

Related Child Applications (1)

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EP23202468.7A Division EP4282797A3 (fr) 2019-06-26 2020-06-16 Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine

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EP3757046A1 true EP3757046A1 (fr) 2020-12-30
EP3757046B1 EP3757046B1 (fr) 2023-10-11

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EP23202468.7A Pending EP4282797A3 (fr) 2019-06-26 2020-06-16 Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine
EP20180319.4A Active EP3757046B1 (fr) 2019-06-26 2020-06-16 Dispositif et procédé pour relier deux rubans de matière se déroulant respectivement d'une bobine

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EP (2) EP4282797A3 (fr)
DE (1) DE102019117180A1 (fr)
PL (1) PL3757046T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115984A1 (de) 2021-06-21 2022-12-22 Körber Technologies Gmbh Vorrichtung und Verfahren der Tabak verarbeitenden Industrie zum Verbinden zweier Materialbahnen

Citations (4)

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Publication number Priority date Publication date Assignee Title
US2724426A (en) * 1952-07-26 1955-11-22 American Mach & Foundry Web splicing mechanism for wrapping machines
US20070029039A1 (en) * 2005-08-06 2007-02-08 Andreas Noe Method for taping a strip connection and adhesive tape applicator
WO2009029522A2 (fr) * 2007-08-24 2009-03-05 Ranpak Corp. Système de conversion de fardage et procédé avec raccordement de matériau brut amélioré
EP3453660A1 (fr) * 2017-09-07 2019-03-13 Sidel Participations Procédé et appareil d'épissage de bandes

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GB993918A (en) * 1963-03-14 1965-06-02 Molins Organisation Ltd A device for splicing webs
CN105307517B (zh) 2014-05-14 2016-12-21 菲利普莫里斯生产公司 用于组合烟草薄片的设备和方法
PL3206978T3 (pl) 2014-10-14 2020-04-30 Philip Morris Products S.A. Urządzenie i metoda łączenia zasadniczo płaskiego materiału ciągłego
EP3272508B1 (fr) 2016-07-06 2019-05-01 Airbus Operations GmbH Procédé destiné à épisser des fibres de renfort pré-imprégnées
CN109043651A (zh) 2018-09-23 2018-12-21 昆明鼎承科技有限公司 烟草薄片自动换盘、拼接的供应机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724426A (en) * 1952-07-26 1955-11-22 American Mach & Foundry Web splicing mechanism for wrapping machines
US20070029039A1 (en) * 2005-08-06 2007-02-08 Andreas Noe Method for taping a strip connection and adhesive tape applicator
WO2009029522A2 (fr) * 2007-08-24 2009-03-05 Ranpak Corp. Système de conversion de fardage et procédé avec raccordement de matériau brut amélioré
EP3453660A1 (fr) * 2017-09-07 2019-03-13 Sidel Participations Procédé et appareil d'épissage de bandes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115984A1 (de) 2021-06-21 2022-12-22 Körber Technologies Gmbh Vorrichtung und Verfahren der Tabak verarbeitenden Industrie zum Verbinden zweier Materialbahnen
EP4116244A1 (fr) 2021-06-21 2023-01-11 Körber Technologies GmbH Dispositif et processus de l'industrie de transformation du tabac permettant de relier deux bandes de matière

Also Published As

Publication number Publication date
CN112141780A (zh) 2020-12-29
EP4282797A2 (fr) 2023-11-29
EP3757046B1 (fr) 2023-10-11
EP4282797A3 (fr) 2024-01-10
PL3757046T3 (pl) 2024-03-25
DE102019117180A1 (de) 2020-12-31

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