EP4438536A1 - Dispositif et procédé pour relier deux bandes de matériau à longueur finie se déroulant chacun d'un bobines en métal à une bande de matériau sans fin pouvant être utilisée dans une production sans interruption - Google Patents

Dispositif et procédé pour relier deux bandes de matériau à longueur finie se déroulant chacun d'un bobines en métal à une bande de matériau sans fin pouvant être utilisée dans une production sans interruption Download PDF

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Publication number
EP4438536A1
EP4438536A1 EP24164616.5A EP24164616A EP4438536A1 EP 4438536 A1 EP4438536 A1 EP 4438536A1 EP 24164616 A EP24164616 A EP 24164616A EP 4438536 A1 EP4438536 A1 EP 4438536A1
Authority
EP
European Patent Office
Prior art keywords
material web
finite length
endless
station
webs
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.)
Pending
Application number
EP24164616.5A
Other languages
German (de)
English (en)
Inventor
Frank Grothaus
Matthias Horn
Axel Henning
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
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 Koerber Technologies GmbH filed Critical Koerber Technologies GmbH
Publication of EP4438536A1 publication Critical patent/EP4438536A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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
    • B65H19/1842—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
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B21C47/247—Joining wire or band ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/021—Multiple web roll supports
    • 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
    • B65H19/14—Accumulating surplus web for advancing to machine while changing the web 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
    • B65H19/1857—Support arrangement of web rolls
    • B65H19/1868—The roll support being of the turret type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • 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
    • 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
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/461—Processing webs in splicing process
    • B65H2301/4611—Processing webs in splicing process before splicing
    • B65H2301/46115—Processing webs in splicing process before splicing by bringing leading edge to splicing station, e.g. by chain or belt
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
    • B65H2301/4634—Heat seal splice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/21—Accumulators
    • B65H2408/217—Accumulators of rollers type, e.g. with at least one fixed and one movable roller
    • B65H2408/2171—Accumulators of rollers type, e.g. with at least one fixed and one movable roller the position of the movable roller(s), i.e. the web loop, being positively actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs
    • B65H2701/11332—Size of webs strip, tape, narrow 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
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal
    • 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 configured for connecting two metal-containing material webs of finite length, each running off a reel, to form an endless material web that can be used for uninterrupted production, comprising means for providing the first reel with the first material web of finite length and for providing the second reel with the second material web of finite length, conveying means for conveying the material webs of finite length in the conveying direction into a connecting station and the endless material web formed therein in the conveying direction to a downstream processing station, the connecting station for connecting the material webs of finite length to one another to form the endless material web, namely a trailing end of the first material web of finite length with a leading end of the second material web of finite length to form an overlapping region, wherein the connecting station comprises a positioning device for positioning the ends of the two material webs of finite length to be connected within the connecting station.
  • the invention further relates to a method for joining two metal-containing material webs of finite length, each running off a reel, to form an endless material web that can be used for uninterrupted production, comprising the steps of: providing the first reel with the first running material web of finite length and the second reel with the second running material web of finite length, producing a trailing end of the first material web of finite length, in particular conveying the produced trailing end of the first material web of finite length in the conveying direction into a joining station, producing and/or conveying a leading end of the second material web of finite length in the conveying direction into the joining station, positioning the connecting ends of the two material webs of finite length within the connecting station, and connecting the trailing end of the first material web of finite length to the leading end of the second material web of finite length by means of the connecting station to form an endless material web which can be used for uninterrupted production, forming an overlapping area.
  • Such methods and devices are used in all industrial sectors in which, for a continuous production process, two material webs are joined together to form a common, endless material web for subsequent processing.
  • An example and preferred area of application for joining which is also referred to as splicing, concerns the tobacco processing industry.
  • material webs of finite length e.g. made of paper, tobacco or foil, in particular so-called recon foils, are wound onto bobbins.
  • the material webs can also consist entirely or at least partially of metal or have metal.
  • a second, full bobbin is provided and the second material web of finite length of the full bobbin is conveyed in the conveying direction and positioned in the area of the connecting station to the first material web.
  • the material webs can be conveyed to the connecting station simultaneously or one after the other.
  • the two material webs are spaced apart from each other in the area of the connecting station and are thus connected to each other.
  • the first material web of finite length is conveyed in the direction of the or each downstream processing station.
  • the first material web is guided through the connecting station.
  • a trailing end of the first material web can be created by running the material web off the first reel and/or separating/cutting the material web to form a trailer.
  • the trailing end of the first material web is only created when the area of the first material web that is to form the trailing end and thus the area to be connected is already in the connecting station.
  • the remaining connection of the first material web to the first reel until the trailing end is created is necessary in order to prepare the first material web for positioning and creating the to keep the trailing end under tension or guided in the connecting station.
  • the second material web of finite length is initially only made available. To do this, the leading end, i.e.
  • a leader is conveyed into the connecting station and positioned in relation to the trailing end of the first material web in the connecting station.
  • the second material web becomes the first material web, so that a new second material web is provided.
  • the leader is the leading end of the second material web.
  • the last piece of the leader that protrudes from the endless material web after connecting is called the leader remainder.
  • the trailer is the trailing end of the first material web. After connecting, the severed trailer remains on the bobbin and must be disposed of.
  • the last piece of the trailer that protrudes from the endless material web after the material webs have been connected and separated from the trailer is called the trailer remainder.
  • the endless material web that is conveyed out of the connecting station is sometimes formed by the first material web and sometimes by the second material web. What is crucial is that a continuous, endless web of material is conveyed from the connecting station towards a downstream processing station.
  • the two ends are joined in motion.
  • the material webs and in particular the ends to be joined are moved in and through the joining station during the joining process.
  • the two material webs have the same or a different conveying speed.
  • One disadvantage is that due to the very short period of time that remains for joining due to the moving material webs, an inadequate connection is formed. Due to the short joining time, only a single welding or gluing point can be set, for example. As a result, only connections that can withstand tensile forces of less than 4N can be achieved.
  • Another disadvantage of the known splicing method and the corresponding devices is that long residual strips remain on the reel.
  • the entire residual strip extending from the joining station to the reel remains unused in each joining process.
  • the idle reel is not completely unwound, so that a residual strip remains between the reel and the connecting station, which is not can be used.
  • the leader is also long. This means that further material from the material web is disposed of unused. Due to the known type of splicing, several meters of material web are lost with each splicing process. Since several hundred bobbins can be changed per day in an ongoing production process, the waste of unusable material web adds up significantly. The rising material costs increase this effect. Furthermore, with the known methods and devices, the cutting of the leader and trailer results in a large amount of leader or tail waste, which remains on the endless material web formed and disrupts the further processing.
  • the invention is therefore based on the object of creating a device that ensures a secure connection of the two material webs of finite length to form an endless material web with reduced residual material without interrupting the production process.
  • the invention is also based on the object of proposing a corresponding method.
  • the connecting station is designed and set up with the positioning device for connecting the two ends of the metal-containing material webs of finite length when the two ends are at a standstill, and a loop storage device is additionally provided into and from which the endless material web formed in the connecting station can be conveyed.
  • the standstill refers to the two material webs of finite length or the two ends to be connected in the connecting station.
  • the continuous conveying of the material webs of finite length is stopped at least in the area of the connecting station for the connecting process.
  • the positioning device can be part of the connecting station, e.g. as an integral part.
  • the positioning device can also be assigned separately to the connecting station.
  • the positioning of the two ends to be connected to each other is more precise when the machine is at a standstill, which means that shorter pre- and post-runs can be achieved.
  • the separation of the pre- and post-tension from the respective material webs of finite length is also cleaner. This means that the lengths of the pre-tension can be reduced to less than 300mm and the post-tension to less than 4m.
  • the loop storage ensures compensation for the standstill of the material webs of finite length.
  • the material web stored in the loop storage can be released so that the downstream processing station can always and continuously be supplied with the endless material web, regardless of the joining process. As long as no joining process is taking place, the loop storage can be filled.
  • connection station for connecting the two metal-containing material webs of finite length advantageously comprises means for electric welding and/or punching and/or folding and/or clinching and/or gluing.
  • means for electric welding with which several welding points can be set for a firm and durable connection when the machine is at a standstill.
  • the means for electric welding as part of the connection station for producing a connection point that is designed and equipped to withstand a tensile force of at least 4N.
  • Other connection techniques with the corresponding means and components can also be used.
  • the positioning device is expediently designed and arranged to position the leading end of the second material web of finite length in relation to the first material web of finite length conveyed through the connecting station and its trailing end. This makes it possible to reduce the lengths of the leader and trailer on the one hand and the leader and trailer remainder on the other.
  • a preferred embodiment is characterized in that the positioning device comprises clamping means and/or magnets and/or other holding means for positioning and holding the leading end of the second material web of finite length in relation to the first material web of finite length and its trailing end.
  • This design creates a simple and compact construction that ensures precise positioning and secure holding of the free ends relative to one another.
  • the positioning device comprises detection means for detecting the actual position of the leading end of the second material web of finite length in relation to the first material web of finite length and its trailing end. This allows further material to be saved, since the lengths of the leader and trailer on the one hand and the leader remainder and trailing remainder on the other hand can be further reduced due to more precise positioning.
  • the connecting station comprises means for cutting a leader and/or a trailer of the material webs of finite length to be connected.
  • the cutting means can be part of the connecting station, also as an integral part, but can also be assigned separately to the connecting station.
  • the cutting means can be designed and set up for the simultaneous or time-delayed cutting of the leading end E2 of the second material web B and the trailing end E1 of the first material web A.
  • the cutting means comprise at least two separate blades, by means of which the leader and the trailer can be separated separately and independently of one another from the material webs of finite length connected in the connecting station or from the endless material web formed in the connecting station.
  • the separate blades instead of the separate blades, other separating or cutting means can also be used.
  • means for weakening the material webs can also be provided.
  • the blades are particularly advantageously designed and arranged for local separation of the leader and/or the trailer near the connection point, such that the remaining leader and/or trailer residues on the material web formed in the area of the connection point are less than 10 mm, preferably less than 5 mm and particularly preferably less than 2 mm.
  • An endless material web with such short leader and trailer residues can be processed better and more smoothly.
  • the loop storage comprises at least one storage section and an intermediate drive for controlling the loop storage.
  • the size of the loop storage can be changed by means of the intermediate drive, namely for filling or for Emptying.
  • Filling in this context means that the endless material web formed in the joining station is introduced into the loop storage, i.e. a reservoir is created that can be emptied during downtimes of the joining process.
  • Emptying in this context means that the stored material web is led out of the loop storage in order to continuously maintain the subsequent processing process.
  • the loop storage can also comprise more than one storage section.
  • the bobbins can be provided separately or integrated into the device itself.
  • the means for providing the bobbins comprise a turntable with at least two mandrels for the bobbins. This design provides the two bobbins with their material webs required for the joining process in a compact manner and facilitates quick changing of the bobbins.
  • An advantageous embodiment is characterized in that a compensating means for compensating the oscillating wound material webs is arranged in the conveying direction behind the means for providing the bobbins and before the connecting station.
  • This compensating means is preferably designed and set up as a swivel plate and is preferably positioned close to the connecting station in order in particular to keep the residual run as short as possible.
  • At least one dancer is arranged behind the connecting station in the conveying direction, which is designed and set up to control the drives of the reels.
  • a dancer or a dancer arrangement can, for example, comprise a preferably single-lane guide roller and preferably several single-lane or multi-lane rollers for deflecting the material web guided in the dancer arrangement.
  • the dancer arrangement is constructed in the manner of a pulley. This allows the tension of the material webs, in particular the first material web, to be changed/regulated in order to enable an optimal connecting process.
  • a preferred further development is characterized in that a further dancer is arranged behind the connecting station in the conveying direction, preferably behind the loop storage, wherein the further dancer is designed to regulate the material tension of the endless material web running out of the loop storage and
  • This dancer or this dancer arrangement can also comprise, for example, a preferably single-lane guide roller and preferably several single-lane or multi-lane rollers for deflecting the material web guided in the dancer arrangement.
  • the dancer arrangement is constructed in the manner of a pulley.
  • the device expediently comprises a trailer winder for picking up and disposing of the trailer separated from the endless material web from a bobbin core of the empty bobbin. Picking up and disposing of the trailer simplifies the process of changing the bobbins in the area of the turntable and ensures that the trailer does not get caught in the area of the connection station.
  • the device particularly preferably comprises a control device for controlling and/or regulating the connection station and the loop storage device.
  • the control device can also be designed and configured to control and/or regulate other components of the device for trouble-free and continuous operation of the device.
  • the control device can be an integral part of the device or can be designed separately.
  • the or each metal-containing or completely metal-made material web has a width of between 3 and 6 mm and preferably between 4 and 5 mm, and a thickness of between 30 and 100 ⁇ m and preferably between 40 and 60 ⁇ m and particularly preferably of about 50 ⁇ m.
  • Other widths and thicknesses of the endless material webs are also possible.
  • the device according to the invention is adapted accordingly in order to be able to process the material webs depending on their respective width and/or thickness.
  • Metals that are contained in the material webs or from which the material webs consist as metal strips or sheet metal strips can, for example, have or be ferromagnetic components or materials or alloys, such as ferromagnetic steel, stainless steel, aluminum or the like.
  • the metal components in the material web can, for example, be more than 5%, more than 20%, more than 50%, more than 90% or 100%.
  • Stainless steel is preferably used as the metal (component).
  • metals, alloys or the like from the group of iron, nickel, cobalt and other metals and combinations thereof can also be used.
  • Other materials, especially metals, can also be used in pure form, as a combination of materials or as an alloy.
  • the problem is also solved by a method with the steps mentioned at the beginning, in that the two ends of the metal-containing material webs of finite length are joined while both ends are at a standstill, whereby the process time for joining the two material webs of finite length while at a standstill is compensated for by a loop storage device that stores the endless material web.
  • Process time is downtime. While the ends to be joined are at a standstill in the joining station, the endless material web that has been formed is fed out of the loop storage device in order to supply the subsequent process or the downstream processing station with the material web.
  • the loop storage device is filled during normal operation, i.e. when the first material web runs off the first reel and is conveyed through the joining station to the downstream processing station.
  • the joining process is initiated.
  • the loop storage is emptied by supplying the downstream processing station with the endless material web from the loop storage.
  • the loop storage can be used to compensate for different transport speeds.
  • the loop storage is used to temporarily shut down the overlapping area, e.g. for the joining process, without affecting the overall operating speed of the downstream processing station(s).
  • the ends to be connected are held with their overlapping area in the connection station and connected to one another by electric welding and/or punching and/or folding and/or clinching and/or gluing.
  • the free ends of the two metal-containing material webs are firmly connected to one another in the overlapping area with several connection points by means of electric welding.
  • the endless material web formed in the connecting station is conveyed into the loop storage and, while the material webs are at a standstill in the overlapping area, is conveyed from the loop storage to a downstream processing station.
  • the downstream processing is thus completely self-sufficient to the joining process, so that on the one hand optimal conditions exist for the joining process and on the other hand a continuous supply of the downstream processing station with the endless material web is ensured.
  • leading end of the second material web of endless length is positioned and held in relation to the first material web of endless length and its trailing end by clamping and/or magnetism.
  • both ends or just one end, preferably the leading end of the second material web can be positioned and held.
  • a preferred development is characterized in that a trailing edge of the first material web of endless length and/or a leading edge of the second material web of endless length are cut off from the formed endless material web after the connection in the connection station, close to the connection point of the overlapping area, such that a leading edge remainder and/or a trailing edge remainder smaller than 10mm and preferably smaller than 5mm and particularly preferably smaller than 2mm remain on the endless material web.
  • a connection point with one or more connection points is created in the overlapping area, which can withstand a tensile force of at least 4N.
  • the drives of the bobbins and/or the material tension of the endless material web running out of the loop storage are regulated in order to ensure a trouble-free and precise joining process on the one hand and continuous processing on the other.
  • the method is carried out with a device according to one or more of claims 1 to 8.
  • the Figures 1 and 2 The device shown is used to connect two metal material webs of finite length.
  • the device can of course also be used to connect two material webs of finite length made of other materials and material combinations.
  • a device 10 which is designed and set up for connecting two metal-containing material webs A, B of finite length, each running from a reel B1, B2, to form an endless material web C that can be used for uninterrupted production.
  • the device 10 comprises means 11 for providing the first reel B1 with the first material web A of finite length and for providing the second reel B2 with the second material web B of finite length, conveying means 12, 13 for conveying the material webs A, B of finite length in conveying direction T1 or T2 into a connecting station 14 and the endless material web C formed therein in conveying direction T3 to a downstream processing station (not explicitly shown).
  • the device 10 further comprises the connecting station 14 for connecting the material webs A and B of finite length to form the endless material web C, namely a trailing end E1 of the first material web A with a leading end E2 of the second material web B to form an overlap region 15, wherein the connecting station 14 comprises a positioning device 16 for positioning the ends E1, E2 of the two material webs A, B to be connected within the connecting station 14.
  • This device 10 is characterized according to the invention in that the connecting station 14 is designed and equipped with the positioning device 16 for connecting the two ends E1, E2 of the metal-containing material webs A, B when the two ends E1, E2 are at a standstill and in addition a loop storage device 17 is provided into and from which the endless material web C formed in the connecting station 14 can be conveyed.
  • the means 11 for providing the bobbins B1 and B2 comprise a rotary table 18 with at least two receiving mandrels 19, 20 for the bobbins B1, B2.
  • the rotary table 18 is mounted on a frame 21 or the like so as to be rotatable about an axis of rotation D.
  • the two receiving mandrels 19, 20 are arranged on the rotary table 18.
  • the receiving mandrels 19, 20 are aligned with their longitudinal extent parallel to the axis of rotation D and are arranged at a distance from one another.
  • the receiving mandrels 19, 20 are designed and set up to detachably receive the bobbins B1, B2.
  • at least two guide rollers 22, 23 are assigned to the rotary table 18, which are located diametrically opposite one another.
  • the conveying means 12, 13 for conveying the material webs A, B are assigned to the receiving mandrels 19, 20.
  • the mandrels 19, 20 can be driven in rotation and are driven by means of a drive
  • connection station 14 like all other components, is arranged on the frame 21 and comprises means 24 for electric welding to connect the two metal-containing material webs.
  • the means 24 for electric welding are designed and set up to create at least one welding point, but preferably several, for example two, three, four or five welding points.
  • the welding points can be arranged next to one another, one behind the other or in preferably geometric patterns, in particular in a triangle, square or pentagon.
  • This means that the connection station 14 is designed and set up to create a connection point that can withstand a tensile force of at least 4N.
  • Such a strong connection which can withstand a tensile force of 4N or more, can also be achieved using means for punching, folding, chinching, gluing or the like.
  • the positioning device 16 as an integral part of the connecting station 14 is designed and arranged for positioning the leading end E2 of the second material web B in relation to the first material web A conveyed through the connecting station 14 and its trailing end E1.
  • the positioning device 16 comprises (not shown in detail shown) clamping means and/or magnets and/or other holding means for positioning and holding the leading end E2 of the second material web B in relation to the first material web A and its trailing end E1.
  • the positioning device 16 comprises detection means (not explicitly shown) for detecting the actual position of the leading end E2 of the second material web B in relation to the first material web A and its trailing end E1.
  • the two material webs A, B of finite length can be fed directly to the connecting station 14.
  • a compensating means 25 for compensating the oscillatingly wound material webs A, B is arranged in the conveying direction behind the means 11 for providing the bobbins B1, B2 and in front of the connecting station 14.
  • the compensating means 25 comprises a pivot plate 26 or the like, to which at least two guide rollers 27, 28 are assigned.
  • the pivot plate 26 or the like is mounted in a rotating manner on the frame 21.
  • the material webs A, B are guided into the connecting station 14 via further guide rollers 29, 30 mounted directly on the frame 21.
  • the material webs A, B can be made partly or entirely from metal.
  • each material web A, B is between 3 and 6 mm and preferably between 4 and 5 mm, and a thickness between 30 and 100 ⁇ m and preferably between 40 and 60 ⁇ m and particularly preferably of about 50 ⁇ m.
  • the device 10 and in particular the connecting station 14 is adapted accordingly in order to be able to process the material webs A, B depending on their respective width and/or thickness.
  • the connecting station 14 comprises means (not explicitly shown) for cutting a leader and/or a trailer of the material webs to be connected.
  • the cutting means comprise at least two separate blades, by means of which the leader and the trailer can be separated separately and independently of one another from the material webs A, B connected in the connecting station 14 or from the material web C formed in the connecting station 14.
  • the blades are designed and set up for locally separating the leader and/or the trailer close to the connection point, such that any leader and/or trailer residues remaining on the material web C formed in the region of the connection point are smaller than 10 mm, preferably smaller than 5 mm and particularly preferably smaller than 2 mm.
  • the endless material web C formed in the connecting station 14 is inevitably guided through the loop storage 17 after the connecting station.
  • the loop storage shown comprises a storage section 31 and an intermediate drive 32 for controlling the loop storage 17.
  • the storage section 31 is designed and set up to accommodate a finite amount of the endless material web C.
  • the endless material web C is wound around several guide rollers 33, some of which can be moved up and down, in order to shorten or lengthen the storage section 31 of the endless material web C. Different transport speeds can be compensated for with the loop storage 17.
  • the loop storage unit 17 serves to briefly stop the overlapping area 15 of the two material webs A, B of finite lengths, or more precisely their ends E1 and E2, for the connecting process, without affecting the overall process speed of the downstream processing station.
  • the device 10 shown comprises several dancer arrangements.
  • a first dancer 34 or a first dancer arrangement is arranged behind the connecting station 14 in the conveying direction and is designed and set up to control the drives of the bobbins.
  • the dancer 34 is positioned in front of the loop storage 17 in the conveying direction and comprises several guide, deflection and/or drive rollers 35 around which the endless material web C is guided.
  • a further dancer 36 or a further dancer arrangement is arranged behind the connecting station 14 in the conveying direction, preferably behind the loop storage 17, the further dancer 36 being designed and set up to control the material tension of the material web C running out of the loop storage 17.
  • This dancer 36 also comprises several guide, deflection and/or drive rollers 37 around which the endless material web C is guided.
  • a (not explicitly shown) trailer winder is provided for picking up and disposing of the trailer separated from the material web C from a bobbin core of the empty bobbin B1.
  • the device 10 comprises a control device (not explicitly shown) for controlling and/or regulating the connecting station 14 and the loop storage 17.
  • a control device for controlling and/or regulating the connecting station 14 and the loop storage 17.
  • individual components of the device 10 and preferably all controllable components are connected to the control device.
  • the turntable 18 is used as a means for providing the reels A, B, the Conveying means 12, 13 for the reels B1, B2 including existing drives, the connection station 14 with the means 24 for electric welding, the detection means and the loop storage 17 with the intermediate drive 32 are connected to the control device via cables and/or wirelessly.
  • the positioning device 16, the means for cutting and the dancers 34, 36 are also connected to the control device.
  • the method is explained in more detail below using the drawing.
  • the method is used to connect two metal-containing material webs A and B of finite length, each running off a reel B1, B2, to form an endless material web C that can be used for uninterrupted production.
  • the first reel B1 with the first running material web A of finite length and the second reel B2 with the second running material web B of finite length are provided.
  • the first reel B1 is opened, the material web A is threaded through and conveyed in the direction of the downstream processing station 14.
  • a trailing end E1 of the first material web A of finite length is created, which is then conveyed into a connecting station 14, in particular in the conveying direction T1.
  • the material web A is guided through the connecting station 14 in any case in the direction of the processing station, until shortly before the reel B1 runs dry, the trailing end E1 of the first material web A is in the processing station 14.
  • a second reel B2 is opened and the material web B is threaded through and conveyed in the direction of the downstream processing station 14.
  • a leading end E2 of the second material web B of finite length is then produced in the conveying direction T2 and/or conveyed into the connecting station 14.
  • the ends E1, E2 of the two material webs A, B of finite length to be connected are positioned within the connecting station 14 and the trailing end E1 of the first material web A of finite length is connected to the leading end E2 of the second material web B of finite length by means of the connecting station 14 to form an endless material web C that can be used for uninterrupted production, forming an overlapping area 15.
  • This method is characterized according to the invention in that the joining of the two ends E1, E2 of the metal-containing material webs A, B of finite length takes place when the two ends E1, E2 are at a standstill, whereby the process time for joining the two material webs A, B of finite length when the machine is at a standstill is determined by a continuous Material web C is compensated for by the loop storage 17 storing the material web C.
  • the loop storage 17 is filled with the endless material web C. For this purpose, a storage section 31 of the loop storage 17 is extended.
  • the endless material web C formed in the connecting station 14 is conveyed into the loop storage 17 and, while the material webs A, B are at a standstill when the ends E1, E2 are being connected in the overlapping area 15, is conveyed from the loop storage 17 to a downstream processing station by shortening the storage section 31 again.
  • connection point formed in the overlapping area 15 with one or more connection points can withstand a tensile force of at least 4N.
  • the leading end E2 of the second material web B of endless length is positioned and held in relation to the first material web A of endless length and its trailing end E1 by clamping and/or magnetism.
  • a trailing edge of the first material web A of endless length and a leading edge of the second material web B of endless length are cut off from the formed endless material web C in the connecting station 14, close to the connection point of the overlap region 15, such that a leading edge remainder and a trailing edge remainder smaller than 10 mm and preferably smaller than 5 mm and particularly preferably smaller than 2 mm remain on the endless material web C.
  • the trailing edge separated from the formed endless material web C is caught and disposed of.
  • the drives of the bobbins B1, B2 and the material tension of the endless material web C running out of the loop storage 17 are controlled.
  • an automatic bobbin change can be carried out in the area of the turntable 18.
  • Suitable handling devices are used for this purpose.
  • the opening of the bobbins B1, B2 and the threading of the material webs A, B are also carried out automatically by means of the handling device or by separate components.
  • the removal of the trailer/residual material from the empty bobbin B1 can also be carried out automatically by means of suitable handling devices in order to transport the residual material to a disposal system.
  • the method is particularly preferably carried out with a device 10 according to one or more of claims 1 to 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
EP24164616.5A 2023-03-28 2024-03-19 Dispositif et procédé pour relier deux bandes de matériau à longueur finie se déroulant chacun d'un bobines en métal à une bande de matériau sans fin pouvant être utilisée dans une production sans interruption Pending EP4438536A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023107801.1A DE102023107801A1 (de) 2023-03-28 2023-03-28 Vorrichtung und Verfahren zum Verbinden von zwei jeweils von einer Bobine ablaufenden, Metall aufweisenden Materialbahnen endlicher Länge zu einer für eine unterbrechungsfreie Produktion verwendbaren, endlosen Materialbahn

Publications (1)

Publication Number Publication Date
EP4438536A1 true EP4438536A1 (fr) 2024-10-02

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EP24164616.5A Pending EP4438536A1 (fr) 2023-03-28 2024-03-19 Dispositif et procédé pour relier deux bandes de matériau à longueur finie se déroulant chacun d'un bobines en métal à une bande de matériau sans fin pouvant être utilisée dans une production sans interruption

Country Status (3)

Country Link
EP (1) EP4438536A1 (fr)
CN (1) CN118723663A (fr)
DE (1) DE102023107801A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024128166A1 (de) * 2024-09-28 2026-04-02 Körber Technologies Gmbh Vorrichtung zum Bereitstellen einer endlosen Materialbahn und Verbindungsstation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017117145A1 (de) * 2017-07-28 2019-01-31 Hauni Maschinenbau Gmbh Vorrichtung zum Verbinden von Materialbahnen
EP3757046A1 (fr) * 2019-06-26 2020-12-30 Hauni Maschinenbau GmbH Dispositif et procédé de raccordement de deux bandes de matière se déroulant d'une bobine
WO2024083631A1 (fr) 2022-10-19 2024-04-25 Philip Morris Products S.A. Procédé et appareil pour l'épissurage statique de bandes de matériau

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022001848U1 (de) * 2022-08-01 2023-01-09 Körber Technologies Gmbh Vorrichtung zum Verbinden von zwei jeweils von einer Bobine ablaufenden Materialbahnen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017117145A1 (de) * 2017-07-28 2019-01-31 Hauni Maschinenbau Gmbh Vorrichtung zum Verbinden von Materialbahnen
EP3757046A1 (fr) * 2019-06-26 2020-12-30 Hauni Maschinenbau GmbH Dispositif et procédé de raccordement de deux bandes de matière se déroulant d'une bobine
WO2024083631A1 (fr) 2022-10-19 2024-04-25 Philip Morris Products S.A. Procédé et appareil pour l'épissurage statique de bandes de matériau
EP4605329A1 (fr) * 2022-10-19 2025-08-27 Philip Morris Products S.A. Procédé et appareil pour l'épissurage statique de bandes de matériau

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DE102023107801A1 (de) 2024-10-02

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