EP0644140B1 - Device and method for changing a foil strip roll and foil holding clamp - Google Patents

Device and method for changing a foil strip roll and foil holding clamp Download PDF

Info

Publication number
EP0644140B1
EP0644140B1 EP94113420A EP94113420A EP0644140B1 EP 0644140 B1 EP0644140 B1 EP 0644140B1 EP 94113420 A EP94113420 A EP 94113420A EP 94113420 A EP94113420 A EP 94113420A EP 0644140 B1 EP0644140 B1 EP 0644140B1
Authority
EP
European Patent Office
Prior art keywords
foil
roll
core
film
foil roll
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.)
Expired - Lifetime
Application number
EP94113420A
Other languages
German (de)
French (fr)
Other versions
EP0644140A2 (en
EP0644140A3 (en
Inventor
Uwe c/o Keil & Schaafhausen Dörr
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.)
Officina Meccanica Sestese SpA
Original Assignee
Officina Meccanica Sestese SpA
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
Priority claimed from DE19934330717 external-priority patent/DE4330717C2/en
Priority claimed from DE9313713U external-priority patent/DE9313713U1/en
Application filed by Officina Meccanica Sestese SpA filed Critical Officina Meccanica Sestese SpA
Publication of EP0644140A2 publication Critical patent/EP0644140A2/en
Publication of EP0644140A3 publication Critical patent/EP0644140A3/en
Application granted granted Critical
Publication of EP0644140B1 publication Critical patent/EP0644140B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/102—Preparing the leading end of the replacement web before splicing operation; Adhesive arrangements on leading end of replacement web; Tabs and adhesive tapes for splicing
    • 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
    • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
    • B65H19/126—Lifting, transporting, or inserting the web roll; Removing empty core with both-ends supporting arrangements
    • 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
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1857—Support arrangement of web rolls
    • B65H19/1878—Support arrangement of web rolls with one stationary support for the rolls
    • 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
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4171—Handling web roll
    • B65H2301/4173—Handling web roll by central portion, e.g. gripping central portion
    • 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
    • B65H2301/4615—Processing webs in splicing process after splicing
    • B65H2301/4617—Processing webs in splicing process after splicing cutting webs in splicing process
    • B65H2301/46172—Processing webs in splicing process after splicing cutting webs in splicing process cutting expiring web only
    • 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
    • B65H2801/00—Application field
    • B65H2801/81—Packaging machines

Definitions

  • the invention relates to a device for changing Foil rolls, especially for pallet wrappers, with a Foil unwinding device that has a mandrel for storing the has a sleeve core having film roll on the the film roll attachable and of which the empty core is removable.
  • Pallet wrappers are used for stacking on pallets Good to pack as much as possible by machine. Doing so a film unwound from a film roll and for example in different types of banding around what is to be packed Well wrapped. Pallet wrappers can be essentially in divide two classes. In the first system, the Pallet with the goods to be packed stationary in the pallet winder, while the one on a rotor arm Film roll moved around the packaging goods. The second The film roll is stationary on the system Pallet wrapper, where the pallet with the to be packed Well turns on a turntable of the pallet wrapper and the film pulls off the film roll into which wrapped the good. As a rule, the film unwinding device Height-adjustable or adjustable, so that the pallet load helically wrapped with the film can be. This is necessary because of the web width with usually about 500 mm smaller than the dimensions the pallet load is.
  • EP-A-0 509 958 describes an apparatus and a method described for the transport of a roll of paper.
  • the device on the one hand transports the paper roll from a first winding position in a second winding position, the Winding process is not interrupted.
  • the transport device can also take out a full roll of paper a stock position to an intermediate position in which the paper roll is placed on a hub element.
  • the Roll of paper on the hub member is then passed through the transport device brought into the first winding position.
  • On the Reverse path can be an empty roll of paper from the second Winding position over the intermediate position in a storage position to be brought.
  • the axis of rotation of the paper roll is during all transport steps and in the winding positions horizontally aligned.
  • the transport device For transporting a roll of paper from the The transport device reaches into the intermediate position in the intermediate position with three gripping fingers into the paper roll. With extendable pins provided in the gripping fingers the paper roll is clamped on the three gripping fingers.
  • the paper roll attached to the transport device in this way becomes brought to the first intermediate position and there on empty triangular hub element, on which the Paper roll is held after the extendable pins are in the gripper fingers have been withdrawn.
  • the so on the hub element arranged paper roll can then in the first Transported winding position and over the hub element on the first winding axis are attached. For this, a Gripping rod of the transport device in the hub element introduced and connected to them via movable balls.
  • the invention has for its object a device for Changing film rolls or the like to create that only short downtimes of the pallet winder during the Film roll changes due and manual intervention during the film roll change largely unnecessary.
  • the roller reel transporter can also a film sealing device for producing a Weld point between the beginning of the film on the second film roll and the film end of the first film roll and a Cutting device for cutting the film end between the film seal and the first film roll.
  • a device with these features makes it practical fully automatic change of film rolls possible, the only comparatively short downtimes of the foils consuming machine requires.
  • a sensor first detects that on the Core of the existing and almost used film roll only a few layers of the film are left.
  • the pallet winder is stopped, the Foil transporter with a new second foil roll to the
  • the film unrolling device moved up, the beginning of the film second film roll with the film end of the first film roll if necessary welded automatically, if necessary the film end automatically between the film sealing point and the first film roll cut, the second film roll positioned on the mandrel and the core of the first film roll with the Film roll transporter to a collection / storage station transported.
  • the film transporter takes you to the collection / storage station automatically a new second roll of film on and puts down the core of the used first film roll, whereupon the change process can be repeated.
  • the core of the core and the film roll holder are each as an arm of the film roll transporter arranged liftable and lowerable pin formed, which is an expandable for example, ring-shaped stretchable by means of compressed air Has cuff. Any other suitable tensioning device can be used.
  • the pin of the film roll holder is e.g. from above into the Inserted core and the cuff, for example Pressurized air stretched. The is released Roll of film after sorting from the roll of film by a corresponding automatic or supported Contraction of the cuff or similar clamping means.
  • the pin in the sleeve core before the expansion of the Cuff can be positioned centrally, are preferably on the spigot several protruding from the surface of the spigot, noses under spring tension circumferentially distributed.
  • the mandrel retraction device an annular, stretchable cuff or the same clamping means, e.g. a square with one laterally protruding, spring-loaded ball catch, on that in a recess in a foot portion of the mandrel or can be positively received.
  • the mandrel retraction device with the clamping means is advantageous rotatable about its axis and thereby the mandrel on or from a film roll holder arm of the film unwinding device rotatable fixable or detachable.
  • the film roll is centered on the mandrel for example, ensures that the mandrel on one Foot portion is surrounded by a conical thickening and in a head portion protruding from the lateral surface of the mandrel, circumferentially distributed under spring tension Has noses.
  • the core sleeve holder and the mandrel retractor with respect a common axis vertically displaceable arranged on the film roll transporter.
  • the film welding device has an advantage in particular retractable and extendable seal stamp, the one on the sealing roll stop arranged on the film unwinding device assigned.
  • a removable film holding clip on the second film roll with two protruding from the second film roll Spring arms can be fixed and between their two ends the unrolled film start of the second film roll can be fixed.
  • the film holding clip advantageously has an interrupted one Spring washer, which is due to compression in the core of the sleeve Film roll is clamped, the spring arms of the Ends of the spring washer crossing over the film roll approximately radially or tangentially outwards from the film roll stand out. This makes it easy to attach the film holding clip on the core as well as a machine Remove the film clip from the core without further possible.
  • the Foil bracket a substantially U-shaped bracket on, whose U-leg on the inner wall of the sleeve core and the outer surface of the second film roll can be clamped are, with the spring arms crossing each other like scissors protrude approximately tangentially outwards from the second film roll.
  • a simple way to release the beginning of the slide Foil clip and removal of the clip is that the film transport carriage has a gripper for actuating the film holding clip with which the Spring arms to release the beginning of the film and the The film holding clip is removable from the second film roll.
  • the gripper acts z. B. in a range between Spring washer or bracket and the crossing point on the Spring arms on. Are the spring arms in this area pressing the gripper together, the gripping claws move the spring arms apart, which is accompanied by the spring ring is compressed and the film holding clip easily can be removed from the core.
  • a simple construction of the cutting device is that it has holder arms pivotable about an axis of rotation, a hot wire is stretched between the free ends. Furthermore, it is u. U. advantageous instead of the hot Wire a mechanical cutter, e.g. B. with a blade operated by a linear cylinder.
  • the device according to the invention is advantageous controlled or actuated such that the film transporter with one attached to the second film roll holder second film roll, the beginning of the film using the film holding clip fixed from the second film roll is, so it lifts vertically and onto the film unwinding device moved horizontally that the sleeve core abnemer above the Positioned core of the first used roll of film is that you then lower the core holder, so that the core of the first roll of film and the second Film roll are at the same level, with the core of the core dipped in the core of the first film roll, that the core of the first roll of film on the core customer sets the mandrel retractor, the mandrel by means of the mandrel retraction device from the first Removed film roll that you then the film roll transporter moves horizontally until the second film roll above of the lowered mandrel is positioned and the beginning of the film and Film end adjacent at least approximately parallel to each other lie that you can manufacture the film sealer a weld between the beginning of the second film Film
  • 1 to 3 is a device in three working phases 10 for changing film rolls 17, 38 shown as they can be used with advantage, for example, for pallet wrappers finds.
  • a carriage or carriage trained film roll transporter 14 between a collection / storage station 15 and the film unwinding device 12 can be positioned horizontally and vertically relative to the latter.
  • the film unrolling device 12 has a film roll holder arm 64, which carries a vertically arranged mandrel 16.
  • the mandrel 16 serves to support the first film roll 17, whose core 18 can be placed on the mandrel 16 and by this is removable.
  • On the film unwind device 12 are also a brake roller 24 and two deflection rollers 20, 22 are provided.
  • the film of the first film roll 17 wraps around the brake roll 24 and the pulley 22. Between the two pulleys 20, 22 a sealing stamp stop 26 is arranged.
  • the height-adjustable film unrolling device 12 as Whole is z. B. either stationary in a pallet winder set up when the goods to be packaged on one of the film unrolling device 12 assigned rotary table positioned is, or on a rotor arm of a pallet winder housed, with the help of the film unwinder 12 subtracting the film web as a whole around what is to be packed Is moving around well. Towards the end of the film web the remaining core 18 with interruption of the winding process exchanged for a new film roll 38 will.
  • a film roll transporter 14 of a special type is used for this.
  • the film roll transporter 14 carries one on an arm 48 Core removal unit 30 for the core 18 of the first film roll 17 on the film unwinding device 12 and one Foil roll holder 31 for the second film roll 38.
  • a Retraction device 28 for the mandrel 16 is below the Sleeve core remover 30 on another arm of the film roll transporter 14 attached.
  • the retractor 28 and the sleeve core taker 30 are common to one another geometric axis 33 against each other in the vertical direction slidable.
  • the film roll transporter 14 Laterally offset from the film roll holder 31 the film roll transporter 14 carries a film welding device 39 with at least one, in particular two or several seal stamps arranged vertically one above the other 40, 42.
  • Cutting device 36 attached to an axis of rotation 35th spaced apart and pivotable with this Holder arms 37 has. Between the free ends of the holding arms 37 is a heatable wire for severing the Film end 44 of the first film roll 17 stretched. This will the cutting device 36 between the sleeve core remover 30 and the film roll holder 31 through onto the film end 44 pivoted.
  • a film holding clip 32 on the second film roll 38 are acted upon.
  • the film holding clip 32 is on each new second film roll 38 placed.
  • the beginning of the slide 46 is clamped between the head ends of the spring arms 70, 72, so that it is flag-like from the second film roll 38 protrudes.
  • the sleeve core taker 30 and the film roll holder 31 are 4a and 4b as vertical to the arm 48 pins 49 arranged at the bottom.
  • One in the head area provided expandable, annular cuff 56 stretches radially disengages and jams when compressed air is applied the core 18 of the first film rolls 17 or the full Film roll 38 firmly.
  • the pin 49 has in the upper section several protruding from its lateral surface 55 under spring tension standing noses 50, 52, 54.
  • the noses 50, 52, 54 are arranged circumferentially distributed on the outer surface 55.
  • the mandrel retraction device 28 has according to FIGS. 5a to 5d an annular, stretchable cuff 66, which by a Recess 67 can be received in a foot section 57 of the mandrel 16 is.
  • the cuff 66 is about a central axis rotatable and the mandrel 16 on the film roll holding arm 64 rotatable fixable or detachable.
  • the stretchable cuff 66 also a positive connection provided between the mandrel and the mandrel retractor be.
  • a square can be provided which in a corresponding recess in the lower part of the Dorns intervenes.
  • One side of the square points to the fixing an outstanding, spring-loaded ball catch of the mandrel on, which is similar to the holding means of a nut / ratchet connection is trained.
  • the mandrel 16 is of a conical Thickening 63 comprises and has in a head section 45 whose outer surface 65 outstanding, under spring tension standing, circumferentially distributed noses 58, 60, 62.
  • the film holding clip that can be plugged onto a full film roll 38 32 has according to a first embodiment according to FIG. 6a, b as a clamping element for clamping fixing on the film roll 38 on an interrupted spring ring 68.
  • the spring arms 70, 72 extend from the ends of the spring washer 68 crossing each other approximately above the film roll 38 radially or tangentially to the film roll 38 to the outside.
  • the Foil holding clip 32 as a clamping element essentially U-shaped bracket 90, the U-leg on the inner wall 89 of the sleeve core 18 and the outer surface 91 of the second Foil roll 38 can be clamped.
  • the spring arms 70, 72 are roughly tangent crossing each other like scissors above the outwardly facing film roll 38.
  • this is a clamping element in a first section 74 for clamping attachment to the second film roll 38, on which the two spring arms are located laterally 70, 72 connect.
  • the spring arms 70, 72 are a second Section 76 and in a fourth section 80 approximately parallel aligned to each other and intersect in one middle third section 78 at a crossing point 79 a front fifth portion 82 of the spring arms 70, 72 Gripping claws 84, 86 or the like for clamping the beginning of the film 46 of the second film roll 38 is provided.
  • the spring arm 72 has one first turn 92 between the second section 76 and the third section 78, the spring arm 70 a first turn 96 between the third section 78 and the fourth section 80 and both spring arms 70, 72 each have a second turn 94, 98 between the fourth section 80 and the fifth Section 82.
  • the spring arms 70, 72 are vertically offset from one another on the Clamping element arranged.
  • the gripping claws 84, 86 or the like are essentially directed downwards at right angles from the fifth section 82 of the spring arms 70, 72.
  • the spring arms 70 extend about 40 cm ⁇ 10 cm in length, 72 outwards from the center of the second film roll 38.
  • the gripper 34 acts to actuate the film holding clamp 32 in an area 88 between the clamping element and the crossing point 79 on the spring arms 70, 72. By the action of the gripper 34 on the area 88 of the spring arms 70, 72 these are spread in the fifth section 82 and the Film start 46 of the second film roll 38 released. With the spread of the outer portions of the spring arms 70, 72 of the Foil holding clip 32 becomes spring ring 68 at the same time compressed and can therefore automatically before the start of winding by means of the gripper 34 from the sleeve core 18 of the second Foil roll 38 are pulled out.
  • the fixation device 100 consists of a holding bracket arranged on a spring arm 72 102, on which the other spring arm 70 is fixed, rotatable or is pivotally attached. In the area of the second section 76, the spring arm 70 has a cut 104.
  • the clamping element is designed as an interrupted spring ring 68.
  • a gripper 34 for actuating the film holding clamp 32 acts in an area 88 between the clamping element and the crossing point 79 or the fixation device 100 on the Spring arms 70, 72 a.
  • the gripper 34 By the action of the gripper 34 on the area 88 of the spring arms 70, 72 these are in the fifth Section 82 spread and the beginning of the film 46 of the second Film roll 38 released.
  • the spring ring 68 With the spread of the outer Portions of the spring arms 70, 72 of the film holding bracket 32 the spring ring 68 is pressed together and can thereby independently before the start of winding by means of the gripper 34 pulled out of the core 18 of the second film roll 38 will.
  • the clamping element also be designed as a circular disk 106, on the Circumferential wall section one or more spring-loaded balls 108 and, not shown in FIG. 4, the spring arms 70, 72 are arranged according to one of the exemplary embodiments.
  • the device 10 for changing the core 18 of the spent Film roll 17, 38 against a new film roll works as follows:
  • the first film roll 17 consumed and only there are still a few layers of film on the core 18.
  • the film consumer e.g. B. the Pallet winder stopped and if necessary the film unwinding device 12 in a basic position, in particular in the lower end position, hazards.
  • the film end 44 of the first film roll 17 is therefore still wound on the core 18.
  • In the Collection / storage station 15 are a number of new film rolls 38 z. B. on a conveyor belt ready by means of the film roll transporter 14 to the film unrolling device 12 to be transported.
  • Each new film roll 38 is with a film holding clip 32 which the film start 46th clamped fixed, so that this over a length of about 30 cm from the film roll 38 protrudes like a flag.
  • the film clip Depending on the embodiment, 32 is either by means of of the spring ring 68 in the sleeve core 18 or by means of Retaining bracket 90 on the inner wall 89 of the core 18 and the Fixed outer surface 91 of the film roll.
  • the film roll transport carriage 14 moves to a standby one new film roll 38 so that the film roll holder 31 over the core 18 of the new film roll 38 is positioned. Then you lower the film roll transporter 14 or the film roll holder 31 that the second Foil roll holder 31 is immersed in the core 18. After an expansion of the cuff 56, for example, by acting on it the same with compressed air is the new film roll 38 fixed to the film roll holder 38.
  • the film roll transporter 14 is subsequently up and moved in the direction of the film unrolling device 12 until the Core pickup 30 above the core 18 of the first used film roll 17 is positioned.
  • the sleeve core extractor 30 lowers and dips into the core 18 of the first film roll 17.
  • the sleeve of the sleeve remover 30 is used to fix the The core 18 of the first film roll 17 is stretched.
  • the almost empty core 18 of the first film roll 17 and the second Foil roll, 38 are now one after the other at the same height positioned.
  • the retraction device 28 raised and the cuff 66 into the recess 67 in the Foot portion 57 of the mandrel 16 inserted.
  • the mandrel 16 of the film roll holding arm 64 released and down from the The core 18 of the first film roll 17 is pulled out while this is held from above by the sleeve core collector 30 becomes.
  • the film transporter 14 is moved so that the film roll holder 31 with the second film roll 38 is arranged above the lowered mandrel 16.
  • the film start 46 of the second film roll 38 now runs almost parallel to the film end 44 of the first film roll 17.
  • the film welding device 39 is actuated to produce a film welding point 47 between the film start 46 and the film end 44.
  • the sealing stamps 40, 42 are moved in the direction of the sealing stamp stop 26 and weld the film start 46 and the film end 44 to one another.
  • the cutting device 36 is then pivoted about the axis of rotation 35 and cuts through the film end 44 between the film welding point 47 and the first film roll 17. During the cutting process, the film end 44 is held in a defined position by being in contact with the deflection roller 20.
  • the mandrel 16 is inserted into the sleeve core 18 of the second film roll 38 by lifting the retraction device 28 and the mandrel 16 is locked by rotating the sleeve 66 with the film roll holder arm 64.
  • the gripper 34 on the arm 48 opens the film holding clip 32 by exerting pressure in area 88 so that the spring arms 70, 72 are opened and release the beginning of the film 46. By lifting the film transporter 14 into the upper position the film holding clip 32 from the second film roll 38 away.
  • the film roll transporter 14 is again in the direction of Collection / storage station 15 moves and the film roll holder 31 over the core 18 of a further second film roll 38 positioned.
  • the gripper 34 opens and gives the Foil holding clip 32 for inclusion in a collecting container free.
  • the sleeve 56 of the sleeve core remover 30 is pulled together and gives the core 18 of the first foils roll 17 free for inclusion in another collection container.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

What is described is, in the first place, a device for changing foil rolls, especially for pallet winders, with a foil-unrolling device (12) which has a spindle (16) for mounting the foil roll (17) having a tube core (18) and onto which the foil roll (17, 38) can be attached and from which the empty tube core (18) can be removed. It is distinguished by a foil-roll transporter (14) which can be positioned relative to the foil-unrolling device and which is intended for transporting the foil rolls (38) between a collecting/supply station (15) and the foil-unrolling device (12), which foil-roll transporter has a tube-core receiver (30) for the first (spent) foil roll (17) and a foil-roll holder (31) for the second (new) foil roll (38) and a spindle retraction device (28), and, in the second place, a method for operating such a device as well as, in the third place, a foil-holding clamp (32) for this purpose. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Wechseln von Folienrollen, insbesondere für Palettenwickler, mit einer Folienabrollvorrichtung, die einen Dorn zur Lagerung der einen Hülsenkern aufweisenden Folienrolle aufweist, auf den die Folienrolle aufsetzbar und von dem der leere Hülsenkern abnehmbar ist.The invention relates to a device for changing Foil rolls, especially for pallet wrappers, with a Foil unwinding device that has a mandrel for storing the has a sleeve core having film roll on the the film roll attachable and of which the empty core is removable.

Palettenwickler werden dazu eingesetzt, auf Paletten gestapeltes Gut weitestgehend maschinell zu verpacken. Dabei wird eine Folie von einer Folienrolle abgewickelt und beispielsweise in verschiedenen Banderolierarten um das zu verpackende Gut gewickelt. Palettenwickler lassen sich im wesentlichen in zwei Klassen einteilen. Bei dem ersten System verharrt die Palette mit dem zu verpackenden Gut stationär in dem Palettenwickler, während sich die an einem Rotorarm befindliche Folienrolle um das verpackende Gut herumbewegt. Bei dem zweiten System befindet sich die Folienrolle stationär an dem Palettenwickler, wobei sich die Palette mit dem zu verpackenden Gut auf einem Drehtisch des Palettenwicklers dreht und dabei die Folie von der Folienrolle abzieht in welche sich das Gut einwickelt. In der Regel ist die Folienabrollvorrichtung höhenverfahrbar bzw. -stellbar gelagert, damit die Palettenladung schraubenlinienförmig mit der Folie umwickelt werden kann. Dies ist deshalb erforderlich, weil die Bahnbreite mit üblicherweise etwa 500 mm geringer als die Abmessungen der Palettenladung ist.Pallet wrappers are used for stacking on pallets Good to pack as much as possible by machine. Doing so a film unwound from a film roll and for example in different types of banding around what is to be packed Well wrapped. Pallet wrappers can be essentially in divide two classes. In the first system, the Pallet with the goods to be packed stationary in the pallet winder, while the one on a rotor arm Film roll moved around the packaging goods. The second The film roll is stationary on the system Pallet wrapper, where the pallet with the to be packed Well turns on a turntable of the pallet wrapper and the film pulls off the film roll into which wrapped the good. As a rule, the film unwinding device Height-adjustable or adjustable, so that the pallet load helically wrapped with the film can be. This is necessary because of the web width with usually about 500 mm smaller than the dimensions the pallet load is.

Beiden Systemen gemeinsam ist der Nachteil, daß nach dem Verbrauch einer Folienrolle der Palettenwickler über einen längeren Zeitraum zum Ersatz einer verbrauchten Folienrolle durch eine neue Folienrolle stillsteht. Während dieser Stillstandsdauer wird durch eine Bedienungsperson der Hülsenkern der verbrauchten Folienrolle von dem Lagerdorn abgenommen und eine neue aus einem Vorrat geholte Folienrolle auf den Lagerdorn aufgesetzt. Der Folienanfang der neuen Folienrolle wird von der Bedienungsperson dann über verschiedene Umlenkrollen und/oder Bremsrollen der Folienabrollvorrichtung hin zu dem zu verpackenden Gut geführt und dort befestigt bzw. in einer Halteklammer eingeklemmt, die den Folienanfang auch während des normalen Arbeitszyklus festhält. Erst dann kann der Palettenwickler wieder in Betrieb gesetzt werden und mit der Verpackung des Palettengutes fortfahren. Diese Stillstandszeiten des Palettenwicklers zum Wechsel der Folienrollen sowie der manuell durchgeführten Wechsel der Folienrollen erhöhen die Betriebskosten des Palettenwicklers erheblich. Auch sind Fehlbedienungen des Palttenwicklers durch das Bedienungspersonal nicht ausgeschlossen.The disadvantage of both systems is that after consumption a film roll of the pallet wrapper over a longer one Period of time to replace a used film roll is stopped by a new film roll. During this downtime is operated by an operator of the core the used film roll removed from the bearing mandrel and put a new roll of film from a stock onto the Bearing mandrel attached. The start of the film for the new film roll is then used by the operator via different deflection rollers and / or brake rollers of the film unrolling device led to the goods to be packaged and fastened there or in clamped a retaining clip, which also the beginning of the film sticks during the normal working cycle. Only then can the pallet winder is put back into operation and with continue packing the pallet goods. These downtimes of the pallet winder for changing the film rolls as well as the manual change of film rolls increase the operating costs of the pallet wrapper considerably. Incorrect operation of the winder by the Operating personnel are not excluded.

Ähnliche Probleme bestehen auch bei allen anderen Vorrichtungen, wo folien- oder bahnförmiges Material von Vorratsrollen abgezogen und verarbeitet oder verbraucht werden, so daß in zeitlichen Abständen immer wieder eine neue Materialrolle zur Verfügung gestellt und in Abwickelpositionen gebracht werden muß.Similar problems exist with all other devices, where foil or sheet material from Supply rolls are withdrawn and processed or used be, so that a new one again and again at intervals Roll of material provided and in unwinding positions must be brought.

In der EP-A-0 509 958 sind eine Vorrichtung und ein Verfahren für den Transport einer Papierrolle beschrieben. Die Vorrichtung transportiert zum einen die Papierrolle aus einer ersten Wickelposition in eine zweite Wickelposition, wobei der Wickelvorgang nicht unterbrochen wird. Die Transportvorrichtung kann zum anderen auch eine volle Papierrolle aus einer Vorratsposition in eine Zwischenposition bringen, in der die Papierrolle auf ein Nabenelement aufgesteckt wird. Die Papierrolle auf dem Nabenelement wird dann durch die Transportvorrichtung in die erste Wickelposition gebracht. Auf dem umgekehrten Weg kann eine leere Papierrolle aus der zweiten Wickelposition über die Zwischenposition in eine Lagerposition gebracht werden. Die Drehachse der Papierrolle ist während allen Transportschritten und in den Wickelpositionen horizontal ausgerichtet. Für den Transport einer Papierrolle aus der Vorratsposition in die Zwischenposition greift die Transportvorrichtung mit drei Greiffingern in die Papierrolle ein. Mittels in den Greiffingern vorgesehener ausfahrbarer Stifte wird die Papierrolle auf den drei Greiffingern festgeklemmt. Die so an der Transportvorrichtung befestigte Papierrolle wird zu der ersten Zwischenposition gebracht und dort auf ein leeres dreieckiges Nabenelement aufgeschoben, auf dem die Papierrolle gehalten wird, nachdem die ausfahrbaren Stifte in die Greiffinger zurückgezogen wurden. Die so auf dem Nabenelement angeordnete Papierrolle kann dann in die erste Wickelposition transportiert und über das Nabenelement auf der ersten Wickelachse angebracht werden. Hierzu wird eine Greifstange der Transportvorrichtung in das Nabenelement eingeführt und über bewegbare Kugeln mit diesen verbunden. Indem dann die Greifstange zurückgezogen wird, wird eine verschiebbare Stange in dem Nabenelement zurückgezogen, über die das Na-benelement an der Zwischenposition in eine Ausnehmung gehalten war. Dadurch wird das Nabenelement von der Zwischenposition gelöst. Die so über das Nabenelement an der Transportvorrichtung festgelegte Papierrolle kann dann in die erste Wickelposition gebracht werden, wo sie in umgekehrter Weise wieder über die Stange des Nabenelements befestigt wird. Auf vergleichbare Weise erfolgt über die Greifstange und das Nabenelement der Transport der Papierrolle während des Wickelvorgangs aus der ersten Wickelposition in die zweite Wickelposition sowie der Transport der leeren Papierrolle aus der zweiten Wickelposition in die Zwischenposition, in der die leere Papierrolle von dem Nabenelement gelöst wird und über die drei Greiffinger der Transportvorrichtung in die Lagerposition gebracht wird. Nachteil einer solchen Vorrichtung und eines solchen Verfahrens für den Transport einer Papierrolle ist, daß eine große Anzahl von Verfahrensschritten notwendig ist. Zum Abwickeln der Papierbänder sind zwei Wickelachsen notwendig, was die Vorrichtung verteuert. Zudem eignen sich die dargestellte Vorrichtung sowie das Verfahren nicht für Papierrollen mit breiten Papierbändern.EP-A-0 509 958 describes an apparatus and a method described for the transport of a roll of paper. The device on the one hand transports the paper roll from a first winding position in a second winding position, the Winding process is not interrupted. The transport device can also take out a full roll of paper a stock position to an intermediate position in which the paper roll is placed on a hub element. The Roll of paper on the hub member is then passed through the transport device brought into the first winding position. On the Reverse path can be an empty roll of paper from the second Winding position over the intermediate position in a storage position to be brought. The axis of rotation of the paper roll is during all transport steps and in the winding positions horizontally aligned. For transporting a roll of paper from the The transport device reaches into the intermediate position in the intermediate position with three gripping fingers into the paper roll. With extendable pins provided in the gripping fingers the paper roll is clamped on the three gripping fingers. The paper roll attached to the transport device in this way becomes brought to the first intermediate position and there on empty triangular hub element, on which the Paper roll is held after the extendable pins are in the gripper fingers have been withdrawn. The so on the hub element arranged paper roll can then in the first Transported winding position and over the hub element on the first winding axis are attached. For this, a Gripping rod of the transport device in the hub element introduced and connected to them via movable balls. By then pulling back the gripping bar, one becomes slidable rod retracted in the hub member, over which the hub element at the intermediate position in a Recess was kept. This will remove the hub element from the Intermediate position solved. The so over the hub element on the Paper roll can then be set in the transport device first winding position are brought where they are in reverse Way is attached again over the rod of the hub member. In a comparable way, the gripping bar and the Hub element of the transport of the paper roll during the Winding process from the first winding position to the second Winding position and the transport of the empty paper roll the second winding position to the intermediate position in which the empty paper roll is detached from the hub element and over the three gripper fingers of the transport device into the storage position brought. Disadvantage of such a device and of such a method for transporting a roll of paper is that a large number of procedural steps are necessary is. There are two winding axes for unwinding the paper tapes necessary, which makes the device more expensive. They are also suitable the device shown and the method are not for Rolls of paper with wide tapes.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Wechseln von Folienrollen oder dergleichen zu schaffen, die nur kurze Stillstandszeiten des Palettenwicklers während des Folienrollenwechsels bedingt und manuelle Eingriffe während des Folienrollenwechsels weitgehend überflüssig macht. The invention has for its object a device for Changing film rolls or the like to create that only short downtimes of the pallet winder during the Film roll changes due and manual intervention during the film roll change largely unnecessary.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst.This task is accomplished by a device with the features of claim 1 solved.

In vorteilhafter Weiterbildung kann der Forlienrollentransporter auch eine Folienschweißvorrichtung zum Herstellen einer Schweißstelle zwischen dem Folienanfang der zweiten Folienrolle und dem Folienende der ersten Folienrolle sowie eine Schneidvorrichtung zum Durchtrennen des Folienendes zwischen der Folienschweißstelle und der ersten Folienrolle aufweisen.In an advantageous further development, the roller reel transporter can also a film sealing device for producing a Weld point between the beginning of the film on the second film roll and the film end of the first film roll and a Cutting device for cutting the film end between the film seal and the first film roll.

Durch eine Vorrichtung mit diesen Merkmalen ist ein praktisch vollautomatischer Wechsel der Folienrollen möglich, der nur vergleichsweise kurze Stillstandszeiten der die Folien verbrauchenden Maschine erfordert.A device with these features makes it practical fully automatic change of film rolls possible, the only comparatively short downtimes of the foils consuming machine requires.

Durch einen Sensor wird zunächst erkannt, daß auf dem Hülsenkern der vorhandenen und fast verbrauchten Folienrolle nur noch wenige Lagen der Folie vorhanden sind. Durch eine entsprechende Steuerung wird der Palettenwickler gestoppt, der Folientransporter mit einer neuen zweiten Folienrolle an die Folienabrollvorrichtung herangefahren, der Folienanfang der zweiten Folienrolle mit dem Folienende der ersten Folienrolle ggf. selbsttätig verschweißt, ggf. selbsttätig das Folienende zwischen der Folienschweißstelle und der ersten Folienrolle durchschnitten, die zweite Folienrolle auf dem Dorn positioniert und der Hülsenkern der ersten Folienrolle mit dem Folienrollentransporter zu einer Sammel-/Vorratsstation transportiert. An der Sammel-/Vorratsstation nimmt der Folientransporter selbsttätig eine neue zweite Folienrolle auf und legt den Hülsenkern der verbrauchten ersten Folienrolle ab, worauf sich der Wechselvorgang wiederholen kann.A sensor first detects that on the Core of the existing and almost used film roll only a few layers of the film are left. By a appropriate control, the pallet winder is stopped, the Foil transporter with a new second foil roll to the The film unrolling device moved up, the beginning of the film second film roll with the film end of the first film roll if necessary welded automatically, if necessary the film end automatically between the film sealing point and the first film roll cut, the second film roll positioned on the mandrel and the core of the first film roll with the Film roll transporter to a collection / storage station transported. The film transporter takes you to the collection / storage station automatically a new second roll of film on and puts down the core of the used first film roll, whereupon the change process can be repeated.

Nach einer vorteilhaften Weiterbildung der Erfindung sind der Hülsenkernaufnehmer und der Folienrollenhalter jeweils als an einem Arm des Folienrollentransporters angeordneter anhebbarer und absenkbarer Zapfen ausgebildet, der eine aufspreizßbare beispielsweise mittels Pressluft dehnbare, ringförmige Manschette aufweist. Auch jede andere geeignete Spannvorrichtung kann verwendet werden. Zum Erfassen der Folienrollen wird der Zapfen des Folienrollenhalters z.B. von oben in den Hülsenkern eingeführt und die Manschette beispielsweise durch Beaufschlgung mit Pressluft gedehnt. Freigegeben wird die Folienrolle nach dem Tranpsortieren von dem Folienrollenhalter durch eine entsprechende selbsttätige oder unterstützte Kontraktion der Manschette oder dergleichen Aufspannmittel.According to an advantageous development of the invention The core of the core and the film roll holder are each as an arm of the film roll transporter arranged liftable and lowerable pin formed, which is an expandable for example, ring-shaped stretchable by means of compressed air Has cuff. Any other suitable tensioning device can be used. For gripping the film rolls the pin of the film roll holder is e.g. from above into the Inserted core and the cuff, for example Pressurized air stretched. The is released Roll of film after sorting from the roll of film by a corresponding automatic or supported Contraction of the cuff or similar clamping means.

Damit der Zapfen in dem Hülsenkern vor der Expansion der Manschette zentrisch positionierbar ist, sind vorzugsweise an dem Zapfen mehrere aus der Mantelfläche des Zapfens herausragende, unter Federspannung stehende Nasen umfangsmäßig verteilt angeordnet.So that the pin in the sleeve core before the expansion of the Cuff can be positioned centrally, are preferably on the spigot several protruding from the surface of the spigot, noses under spring tension circumferentially distributed.

Nach einem weiteren Merkmal der Erfindung weist die Dornrückzugsvorrichtung eine ringförmige, dehnbare Manschette oder dergleichen Spannmittel, z.B. einen Vierkant mit einer seitlich herausragenden, federbelasteten Kugelraste, auf, die in einer Ausnehmung eines Fußabschnitts des Dorns kraftschlüssig oder formschlüssig aufnehmbar sind. Durch diese Ausgestaltung der Rückzugsvorrichtung ist eine einfache und sichere Entfernung des Dorns aus dem Hülsenkern der ersten verbrauchten Folienrolle möglich. According to a further feature of the invention, the mandrel retraction device an annular, stretchable cuff or the same clamping means, e.g. a square with one laterally protruding, spring-loaded ball catch, on that in a recess in a foot portion of the mandrel or can be positively received. Through this Design of the retraction device is simple and safe removal of the mandrel from the core of the first used film roll possible.

Von Vorteil ist die Dornrückzugsvorrichtung mit den Spannmitteln um ihre Achse drehbar und dadurch der Dorn an bzw. von einem Folienrollenhalterarm der Folienabrollvorrichtung drehbar festlegbar bzw. lösbar.The mandrel retraction device with the clamping means is advantageous rotatable about its axis and thereby the mandrel on or from a film roll holder arm of the film unwinding device rotatable fixable or detachable.

Eine zentrische Lagerung der Folienrolle auf dem Dorn wird beispielsweise dadurch gewährleistet, daß der Dorn an einem Fußabschnitt von einer konischer Verdickung umfaßt ist und in einem Kopfabschnitt aus der Mantelfläche des Dorns herausragende, unter Federspannung stehende umfangsmäßig verteilte Nasen aufweist.The film roll is centered on the mandrel for example, ensures that the mandrel on one Foot portion is surrounded by a conical thickening and in a head portion protruding from the lateral surface of the mandrel, circumferentially distributed under spring tension Has noses.

Nach einer anderen vorteilhaften Ausgestaltung der Erfindung sind der Hülsenkernhalter und die Dornrückzugsvorrichtung bezüglich einer gemeinsamen Achse vertikal gegeneinander verschiebbar an dem Folienrollentransporter angeordnet. Dadurch ist gewährleistet, daß der Hülsenkern der ersten Folienrolle während der Entfernung des Dorns durch den Hülsenkernabnehmer sicher fixiert wird.According to another advantageous embodiment of the invention are the core sleeve holder and the mandrel retractor with respect a common axis vertically displaceable arranged on the film roll transporter. Thereby it is guaranteed that the core of the first film roll during the removal of the mandrel by the core extractor is securely fixed.

Von Vorteil weist die Folienschweißvorrichtung einen insbesondere ein- und ausfahrbaren Siegelstempel auf, dem ein auf der Folienabrollvorrichtung angeordneter Siegelstempelanschlag zugeordnet ist.The film welding device has an advantage in particular retractable and extendable seal stamp, the one on the sealing roll stop arranged on the film unwinding device assigned.

Eine sichere Herstellung der Folienschweißstelle wird dadurch gewährleistet, daß während des Folienrollenwechsels der Siegelstempel und der Siegelstempelanschlag einander unmittelbar benachbart gegenüber liegen und zwischen beiden das Folienende der ersten Folienrolle und der Folienanfang der zweiten Folienrolle angeordnet sind.This ensures a safe production of the film sealing point ensures that the sealing stamp during the film roll change and the seal stamp stop immediately lie adjacent opposite and between the two the film end the first film roll and the film start of the second Foil roll are arranged.

Nach einem weiteren vorteilhaften Merkmal der Erfindung, ist an der zweiten Folienrolle eine abnehmbare Folienhalteklammer mit zwei von der zweiten Folienrolle abstehenden Federarmen festlegbar und zwischen deren beiden Enden der abgerollte Folienanfang der zweiten Folienrolle fixierbar. Dadurch, daß der Folienanfang durch die Folienhalteklammer fahnenartig von der zweiten Folienrolle abstehend fixiert wird, können der Folienanfang der zweiten Folienrolle und das Folienende der ersten Folienrolle äußerst einfach während des Folienrollenwechsels durch Bewegung des Folienrollentransporters relativ zu der Folienabrollvorrichtung parallel zueinander angeordnet und miteinander verschweißt werden.According to another advantageous feature of Invention, is a removable film holding clip on the second film roll with two protruding from the second film roll Spring arms can be fixed and between their two ends the unrolled film start of the second film roll can be fixed. The fact that the beginning of the film through the film holding clip fixed in a flag-like manner protruding from the second film roll the beginning of the second film roll and that Film end of the first film roll extremely easy during the Film roll change by moving the film roll transporter relative to the film unwinding device parallel to each other arranged and welded together.

Von Vorteil weist die Folienhalteklammer einen unterbrochenen Federring auf, der durch Kompression in den Hülsenkern der Folienrolle einklemmbar ist, wobei die Federarme von den Enden des Federringes über die Folienrolle einander kreuzend in etwa radial oder tangential nach außen von der Folienrolle abstehen. Hierdurch ist ein einfaches Anbringen der Folienhalteklammer an dem Hülsenkern wie auch ein maschinelles Entfernen der Folienhalteklammer von dem Hülsenkern ohne weiteres möglich.The film holding clip advantageously has an interrupted one Spring washer, which is due to compression in the core of the sleeve Film roll is clamped, the spring arms of the Ends of the spring washer crossing over the film roll approximately radially or tangentially outwards from the film roll stand out. This makes it easy to attach the film holding clip on the core as well as a machine Remove the film clip from the core without further possible.

Nach einer anderen Weiterbildung der Erfindung weist die Folienhalteklammer einen im wesentlichen U-förmigen Haltebügel auf, dessen U-Schenkel an der Innenwand des Hülsenkerns und der Außenfläche der zweiten Folienrolle klemmend anlegbar sind, wobei die Federarme einander scherenartig kreuzend in etwa tangential nach außen von der zweiten Folienrolle abstehen.According to another development of the invention, the Foil bracket a substantially U-shaped bracket on, whose U-leg on the inner wall of the sleeve core and the outer surface of the second film roll can be clamped are, with the spring arms crossing each other like scissors protrude approximately tangentially outwards from the second film roll.

Es hat sich als vorteilhaft erwiesen, daß die Federarme sich etwa 40 cm ± 10 cm von dem Zentrum der Folienrolle eines normalen Durchmessers bis zu etwa 30 cm nach außen erstrecken Sofern sogenannte Großrollen mit einem Durchmesser von 50 cm oder mehr zur Verwendung kommen, ist der Einsatz von Folienhalteklammern mit längeren Federarmen erforderlich. It has proven advantageous that the spring arms about 40 cm ± 10 cm from the center of the film roll one normal diameter up to about 30 cm extend outwards If so-called large rolls with a diameter of 50 cm or more are used is the use of Foil clips with longer spring arms required.

Eine vorteilhafte Ausgestaltung der Erfindung besteht auch darin, daß die Federarme ausgehend von einem ersten Abschnitt zur lösbaren Befestigung der Folienhalteklammer an der zweiten Folienrolle in einem zweiten Abschnitt und einem vierten Abschnitt im wesentlichen parallel zueinander verlaufen, in einem mittleren dritten Abschnitt einander kreuzen und in einem fünften Abschnitt mit Greifklauen oder dergleichen zur Fixierung des Folienanfangs versehen sind.There is also an advantageous embodiment of the invention in that the spring arms starting from a first section for detachable fastening of the film holding clip to the second one Film roll in a second section and a fourth Section run essentially parallel to one another, in a middle third section cross each other and in a fifth section with gripping claws or the like Fixation of the beginning of the film are provided.

Eine einfache Art zur Freigabe des Folienanfangs durch die Folienhalteklammer und eine Entfernung der Folienhalteklammer besteht darin, daß der Folientransportschlitten einen Greifer zur Betätigung der Folienhalteklammer aufweist, mit dem die Federarme zur Freigabe des Folienanfangs spreizbar und die Folienhalteklammer von der zweiten Folienrolle abnehmbar ist.A simple way to release the beginning of the slide Foil clip and removal of the clip is that the film transport carriage has a gripper for actuating the film holding clip with which the Spring arms to release the beginning of the film and the The film holding clip is removable from the second film roll.

Dabei wirkt der Greifer z. B. in einem Bereich zwischen dem Federring bzw. Haltebügel und dem Kreuzungspunkt auf die Federarme ein. Werden in diesem Bereich die Federarme durch den Greifer zusammengedrückt, bewegen sich die Greifklauen der Federarme auseinander, wobei damit einhergehend der Federring komprimiert wird und die Folienhalteklammer leicht aus dem Hülsenkern entnehmbar ist.The gripper acts z. B. in a range between Spring washer or bracket and the crossing point on the Spring arms on. Are the spring arms in this area pressing the gripper together, the gripping claws move the spring arms apart, which is accompanied by the spring ring is compressed and the film holding clip easily can be removed from the core.

Ein einfacher Aufbau der Schneidvorrichtung besteht darin, daß sie um eine Drehachse schwenkbare Halterarme aufweist, zwischen deren freien Enden ein heißer Draht gespannt ist. Des weiteren ist es u. U. vorteilhaft, anstelle des heißen Drahtes eine mechanische Schneidvorrichtung, z. B. mit einer durch einen Linearzylinder betätigten Klinge einzusetzen.A simple construction of the cutting device is that it has holder arms pivotable about an axis of rotation, a hot wire is stretched between the free ends. Furthermore, it is u. U. advantageous instead of the hot Wire a mechanical cutter, e.g. B. with a blade operated by a linear cylinder.

Die erfindungsgemäße Vorrichtung wird in vorteilhafter Weise derart gesteuert bzw. betätigt, daß man den Folientransporter mit einer an dem zweiten Folienrollenhalter festgelegten zweiten Folienrolle, deren Folienanfang mittels der Folienhalteklammer von der zweiten Folienrolle abstehend fixiert ist, so vertikal anhebt und auf die Folienabrollvorrichtung horizontal hinbewegt, daß der Hülsenkernabnemer oberhalb des Hülsenkerns der ersten aufgebrauchten Folienrolle positioniert ist, daß man dann den Hülsenkernabnehmerhalter absenkt, so daß der Hülsenkern der ersten Folienrolle und die zweite Folienrolle auf gleichem Niveau liegen, wobei der Hülsenkernabnehmer in den Hülsenkern der ersten Folienrolle eintaucht, daß man den Hülsenkern der ersten Folienrolle an dem Hülsenkernabnehmer festlegt, die Dornrückzugsvorrichtung anhebt, den Dorn mittels der Dornrückzugsvorrichtung aus der ersten Folienrolle entfernt, daß man dann den Folienrollentransporter horizontal verschiebt bis die zweite Folienrolle oberhalb des abgesenkten Dornes positioniert ist und Folienanfang und Folienende benachbart wenigstens annähernd parallel zueinander liegen, daß man die Folienschweißvorrichtung zur Herstellung einer Schweißstelle zwischen Folienanfang der zweiten Folienrolle und Folienende der ersten Folienrolle betätigt, mittels der Schneidvorrichtung das Folienende zwischen der Schweißstelle und der ersten Folienrolle durchtrennt, den Dorn mittels der Dornrückzugsvorrichtung in den Hülsenkern der zweiten Folienrolle einführt, mittels eines Greifers die Folienhalteklammer zunächst öffnet und anschließend von der zweiten Folienrolle abhebt, wobei der Folienrollenhalter die zweite Folienrolle freigibt, daß man den Folienrollentransporter vertikal anhebt und horizontal in Richtung der Sammel-/Vorratsstation zurückbewegt, daß der zweite Folienrollenhalter oberhalb der nächsten zweiten Folienrolle zu liegen kommt und der Hülsenkernabnehmer den Hülsenkern der ersten Folienrolle und der Greifer die Folienhalteklammer freigeben, und daß man den Folientransporter absenkt und die zweite Folienrolle an dem zweiten Folienrollenhalter festlegt, um für eine neuen Folienrollenwechsel zur Verfügung zu stellen. Hierdurch läßt sich z. B. ein Palettenwickler auch beim Folienrollenwechsel weitgehend ohne Bedienungspersonal bei kurzen Stillstandszeiten betreiben. Es muß lediglich dafür gesorgt werden, daß in der Sammel-/Vorratsstation Folienrollen in ausreichender Zahl vorhanden sind, wobei die Folienrollen mit der Folienhalteklammer zur Fixierung des bestehenden Folienanfangs bestückt sind. Die vom Folienrollentransporter in der Sammel-Vorratsstationen freigegebenen Folienhalterklammern werden in einem Behälter gesammelt und wieder verwendet. Ebenso werden die verbrauchten Hülsenkerne der verbrauchten Folienrollen gesammelt und der weiteren Verwertung zugeführt. The device according to the invention is advantageous controlled or actuated such that the film transporter with one attached to the second film roll holder second film roll, the beginning of the film using the film holding clip fixed from the second film roll is, so it lifts vertically and onto the film unwinding device moved horizontally that the sleeve core abnemer above the Positioned core of the first used roll of film is that you then lower the core holder, so that the core of the first roll of film and the second Film roll are at the same level, with the core of the core dipped in the core of the first film roll, that the core of the first roll of film on the core customer sets the mandrel retractor, the mandrel by means of the mandrel retraction device from the first Removed film roll that you then the film roll transporter moves horizontally until the second film roll above of the lowered mandrel is positioned and the beginning of the film and Film end adjacent at least approximately parallel to each other lie that you can manufacture the film sealer a weld between the beginning of the second film Film roll and film end of the first film roll actuated, by means of the cutting device between the film end cut the weld and the first roll of film Mandrel by means of the mandrel retraction device in the core introduces the second film roll by means of a gripper Film holding clip first opens and then from the second film roll lifts, the film roll holder second film roll releases that one the film roll transporter lifts vertically and horizontally towards the collection / storage station moved back that the second film roll holder to lie above the next second film roll comes and the core of the core is the core of the first Release the film roll and the gripper the film holding clip, and that you lower the film transporter and the second Film roll to the second film roll holder for a new film roll change. This allows z. B. a pallet winder also when changing film rolls largely without operating personnel operate short downtimes. It just has to be made sure that film rolls in the collection / storage station are present in sufficient numbers, the film rolls with the film clip to fix the existing one Are equipped at the beginning of the film. The one from the film roll transporter film holder clips released in the collecting supply stations are collected in a container and again used. Likewise, the used core of the used film rolls collected and further recycling fed.

Es zeigen:

Fig. 1 a, b 2 a, b 3 a, b
eine schematische Darstellung der Folienrollenwechselvorrichtung in Seitenansicht und Draufsicht während verschiedener Phasen des Wechselvorganges nach einem Ausführungsbeispiel der Erfindung,
Fig. 4 a, b
eine vergrößerte Darstellung eines erfindungsgemäßen Folienrollenhalters in Seitenansicht,
Fig. 5 a - c
den Dorn und die Dornrückzugsvorrichtung in Seitenansicht während verschiedener Phasen des Wechselvorganges,
Fig. 5 d
eine Draufsicht auf den Dorn und den Folienrollenhalterarm,
Fig. 6 a, b
eine Draufsicht und eine Seitenansicht einer ersten Ausführungsform der Folienhalteklammer,
Fig. 7
eine zweite Ausführungsform der Folienhalteklammer in Draufsicht,
Fig. 8
eine dritte Ausführungsform der Folienhalteklammer in Draufsicht, und
Fig. 9
eine weitere Ausführungsform des Klemmelements in Draufsicht.
Show it:
Fig. 1 a, b 2 a, b 3 a, b
1 shows a schematic illustration of the film roll changing device in a side view and a top view during different phases of the changing process according to an embodiment of the invention,
4 a, b
an enlarged view of a film roll holder according to the invention in side view,
5 a - c
the mandrel and the mandrel retraction device in side view during different phases of the changing process,
Fig. 5 d
a plan view of the mandrel and the film roll holder arm,
Fig. 6 a, b
a plan view and a side view of a first embodiment of the film holding clip,
Fig. 7
a second embodiment of the film holding clip in plan view,
Fig. 8
a third embodiment of the film holding clip in plan view, and
Fig. 9
a further embodiment of the clamping element in plan view.

In den Fig. 1 bis 3 ist in drei Arbeitsphasen eine Vorrichtung 10 zum Wechseln von Folienrollen 17, 38 dargestellt, wie sie beispielsweise für Palettenwickler mit Vorteil Anwendung findet. Zum Wechseln einer ersten, auf der Folienabrollvorrichtung 12 gelagerten Folienrolle 17 bzw. nach deren Aufbrauch des verbleibenden Hülsenkerns 18 gegen eine zweite neue Folienrolle 38 ist ein als Wagen oder Schlitten ausgebildeter Folienrollentransporter 14 zwischen einer Sammel-/Vorratsstation 15 und der Folienabrollvorrichtung 12 horizontal und vertikal relativ zu letzterer positionierbar.1 to 3 is a device in three working phases 10 for changing film rolls 17, 38 shown as they can be used with advantage, for example, for pallet wrappers finds. For changing a first one on the film unwinding device 12 stored film roll 17 or after their use up of the remaining core 18 against one second new film roll 38 is a carriage or carriage trained film roll transporter 14 between a collection / storage station 15 and the film unwinding device 12 can be positioned horizontally and vertically relative to the latter.

Die Folienabrollvorrichtung 12 weist einen Folienrollenhalterarm 64 auf, der einen vertikal angeordneten Dorn 16 trägt. Der Dorn 16 dient zur Lagerung der ersten Folienrolle 17, deren Hülsenkern 18 auf den Dorn 16 aufsetzbar und von diesem abnehmbar ist. Auf der Folienabrollvorrichtung 12 sind ferner eine Bremsrolle 24 sowie zwei Umlenkrollen 20, 22 vorgesehen. Die Folie der ersten Folienrolle 17 umschlingt die Bremsrolle 24 sowie die Umlenkrolle 22. Zwischen den beiden Umlenkrollen 20, 22 ist ein Siegelstempelanschlag 26 angeordnet.The film unrolling device 12 has a film roll holder arm 64, which carries a vertically arranged mandrel 16. The mandrel 16 serves to support the first film roll 17, whose core 18 can be placed on the mandrel 16 and by this is removable. On the film unwind device 12 are also a brake roller 24 and two deflection rollers 20, 22 are provided. The film of the first film roll 17 wraps around the brake roll 24 and the pulley 22. Between the two pulleys 20, 22 a sealing stamp stop 26 is arranged.

Die höhenverfahrbar gelagerte Folienabrollvorrichtung 12 als Ganzes ist z. B. entweder stationär in einem Palettenwickler aufgestellt, wenn das zu verpackende Gut auf einem der Folienabrollvorrichtung 12 zugeordneten Drehtisch positioniert ist, oder aber auf einem Rotorarm eines Palettenwicklers untergebracht, mit Hilfe dessen die Folienabrollvorrichtung 12 unter Abzug der Folienbahn als Ganzes um das zu verpackende Gut herumbewegt wird. Gegen Ende der Folienbahn muß der verbleibende Hülsenkern 18 unter Unterbrechung des Wickelvorganges gegen eine neue Folienrolle 38 ausgetauscht werden. The height-adjustable film unrolling device 12 as Whole is z. B. either stationary in a pallet winder set up when the goods to be packaged on one of the film unrolling device 12 assigned rotary table positioned is, or on a rotor arm of a pallet winder housed, with the help of the film unwinder 12 subtracting the film web as a whole around what is to be packed Is moving around well. Towards the end of the film web the remaining core 18 with interruption of the winding process exchanged for a new film roll 38 will.

Hierzu dient ein Folienrollentransporter 14 spezieller Art. Der Folienrollentransporter 14 trägt an einem Arm 48 einen Hülsenkernabnehmer 30 für den Hülsenkern 18 der ersten Folienrolle 17 auf der Folienabrollvorrichtung 12 und einen Folienrollenhalter 31 für die zweite Folienrolle 38. Eine Rückzugsvorrichtung 28 für den Dorn 16 ist unterhalb des Hülsenkernabnehmers 30 an einem weiteren Arm des Folienrollentransporters 14 befestigt. Die Rückzugsvorrichtung 28 und der Hülsenkernabnehmer 30 sind bezüglich einer gemeinsamen geometrischen Achse 33 in vertikaler Richtung gegeneinander verschiebbar. Seitlich versetzt des Folienrollenhalters 31 trägt der Folienrollentransporter 14 eine Folienschweißvorrichtung 39 mit wenigstens einem, insbesondere zwei oder mehreren vertikal übereinander angeordneten Siegelstempeln 40, 42. Des weiteren ist auf dem Folientransporter 14 eine Schneidvorrichtung 36 angebracht, die an einer Drehachse 35 im Abstand voneinander angeordnete und mit dieser schwenkbare Halterarme 37 aufweist. Zwischen den freien Enden der Haltearme 37 ist ein aufheizbarer Draht zur Durchtrennung des Folienendes 44 der ersten Folienrolle 17 gespannt. Dazu wird die Schneidvorrichtung 36 zwischen dem Hülsenkernabnehmer 30 und dem Folienrollenhalter 31 hindurch auf das Folienende 44 hingeschwenkt.A film roll transporter 14 of a special type is used for this. The film roll transporter 14 carries one on an arm 48 Core removal unit 30 for the core 18 of the first film roll 17 on the film unwinding device 12 and one Foil roll holder 31 for the second film roll 38. A Retraction device 28 for the mandrel 16 is below the Sleeve core remover 30 on another arm of the film roll transporter 14 attached. The retractor 28 and the sleeve core taker 30 are common to one another geometric axis 33 against each other in the vertical direction slidable. Laterally offset from the film roll holder 31 the film roll transporter 14 carries a film welding device 39 with at least one, in particular two or several seal stamps arranged vertically one above the other 40, 42. Furthermore, one is on the film transporter 14 Cutting device 36 attached to an axis of rotation 35th spaced apart and pivotable with this Holder arms 37 has. Between the free ends of the holding arms 37 is a heatable wire for severing the Film end 44 of the first film roll 17 stretched. This will the cutting device 36 between the sleeve core remover 30 and the film roll holder 31 through onto the film end 44 pivoted.

Auf dem Arm 48 des Folienrollentransporters 14 ist ferner ein Greifer 34 angeordnet, mit Hilfe welchem die Federarme 70, 72 einer Folienhalteklammer 32 an der zweiten Folienrolle 38 beaufschlagbar sind. Die Folienhalteklammer 32 wird auf jede neue zweite Folienrolle 38 aufgesetzt. Der Folienanfang 46 wird dabei zwischen den Kopfenden der Federarme 70, 72 eingeklemmt, so daß er fahnenartig von der zweiten Folienrolle 38 absteht.On the arm 48 of the film roll transporter 14 is also a Arranged gripper 34, by means of which the spring arms 70, 72 a film holding clip 32 on the second film roll 38 are acted upon. The film holding clip 32 is on each new second film roll 38 placed. The beginning of the slide 46 is clamped between the head ends of the spring arms 70, 72, so that it is flag-like from the second film roll 38 protrudes.

Der Hülsenkernabnehmer 30 und die Folienrollenhalter 31 sind gemäß den Fig. 4a und 4b als an dem Arm 48 vertikal nach unten angeordnete Zapfen 49 ausgebildet. Eine in dem Kopfbereich vorgesehene dehnbare, ringförmige Manschette 56 dehnt sich bei Beaufschlagung mit Pressluft radial aus und klemmt den Hülsenkern 18 der ersten Folienrollen 17 bzw. die volle Folienrolle 38 fest. Im oberen Abschnitt weist der Zapfen 49 mehrere aus seiner Mantelfläche 55 herausragende, unter Federspannung stehende Nasen 50, 52, 54 auf. Die Nasen 50, 52, 54 sind umfangsmäßig verteilt auf der Mantelfläche 55 angeordnet.The sleeve core taker 30 and the film roll holder 31 are 4a and 4b as vertical to the arm 48 pins 49 arranged at the bottom. One in the head area provided expandable, annular cuff 56 stretches radially disengages and jams when compressed air is applied the core 18 of the first film rolls 17 or the full Film roll 38 firmly. The pin 49 has in the upper section several protruding from its lateral surface 55 under spring tension standing noses 50, 52, 54. The noses 50, 52, 54 are arranged circumferentially distributed on the outer surface 55.

Die Dornrückzugsvorrichtung 28 weist gemäß Fig. 5a bis 5d eine ringförmige, dehnbare Manschette 66 auf, die von einer Ausnehmung 67 an einem Fußabschnitt 57 des Dorns 16 aufnehmbar ist. Dabei ist die Manschette 66 um eine Mittelachse drehbar sowie der Dorn 16 an dem Folienrollenhaltearm 64 drehbar festlegbar bzw. lösbar. Für den Fall, daß die auftretenden Kräfte bestimmte Werte überschreiten, kann anstelle der dehnbaren Manschette 66 auch eine formschlüssige Verbindung zwischen dem Dorn und der Dornrückzugsvorrichtung vorgesehen sein. Hierzu kann ein Vierkant vorgesehen werden, der in eine entsprechende Ausnehmung in dem unteren Teil des Dorns eingreift. Eine Seite des Vierkants weist zur Festlegung des Dorns eine herausragende, federbelastete Kugelraste auf, die ähnlich wie die Haltemittel einer Nuß/Ratsche-Verbindung ausgebildet ist.The mandrel retraction device 28 has according to FIGS. 5a to 5d an annular, stretchable cuff 66, which by a Recess 67 can be received in a foot section 57 of the mandrel 16 is. The cuff 66 is about a central axis rotatable and the mandrel 16 on the film roll holding arm 64 rotatable fixable or detachable. In the event that the occurring Forces can exceed certain values instead the stretchable cuff 66 also a positive connection provided between the mandrel and the mandrel retractor be. For this, a square can be provided which in a corresponding recess in the lower part of the Dorns intervenes. One side of the square points to the fixing an outstanding, spring-loaded ball catch of the mandrel on, which is similar to the holding means of a nut / ratchet connection is trained.

An dem Fußabschnitt 57 ist der Dorn 16 von einer konischen Verdickung 63 umfaßt und weist in einem Kopfabschnitt 45 aus dessen Mantelfläche 65 herausragende, unter Federspannung stehende, umfangsmäßig verteilte Nasen 58, 60, 62 auf.At the foot section 57, the mandrel 16 is of a conical Thickening 63 comprises and has in a head section 45 whose outer surface 65 outstanding, under spring tension standing, circumferentially distributed noses 58, 60, 62.

Die auf eine volle Folienrolle 38 aufsteckbare Folienhalteklammer 32 weist nach einer ersten Ausführungsform gemäß Fig. 6a, b als Klemmelement zur klemmenden Festlegung an der Folienrolle 38 einen unterbrochenen Federring 68 auf. Die Federarme 70, 72 erstrecken sich von den Enden des Federringes 68 oberhalb der Folienrolle 38 einander kreuzend in etwa radial oder tangential zu der Folienrolle 38 nach außen.The film holding clip that can be plugged onto a full film roll 38 32 has according to a first embodiment according to FIG. 6a, b as a clamping element for clamping fixing on the film roll 38 on an interrupted spring ring 68. The spring arms 70, 72 extend from the ends of the spring washer 68 crossing each other approximately above the film roll 38 radially or tangentially to the film roll 38 to the outside.

Nach einer weiteren Ausführungsform gemäß Fig. 7 weist die Folienhalteklammer 32 als Klemmelement einen im wesentlichen U-förmigen Haltebügel 90 auf, dessen U-Schenkel an der Innenwand 89 des Hülsenkerns 18 und der Außenfläche 91 der zweiten Folienrolle 38 klemmend anlegbar sind. Die Federarme 70, 72 stehen einander scherenartig kreuzend in etwa tangential oberhalb der nach außen weisenden Folienrolle 38 ab.According to a further embodiment according to FIG. 7, the Foil holding clip 32 as a clamping element essentially U-shaped bracket 90, the U-leg on the inner wall 89 of the sleeve core 18 and the outer surface 91 of the second Foil roll 38 can be clamped. The spring arms 70, 72 are roughly tangent crossing each other like scissors above the outwardly facing film roll 38.

Gemeinsam ist den beiden Ausführungsformen der Folienhalteklammer 32, daß diese in einem ersten Abschnitt 74 ein Klemmelement zur klemmenden Festlegung an der zweiten Folienrolle 38 aufweist, an welches sich seitlich die beiden Federarme 70, 72 anschließen. Die Federarme 70, 72 sind einem zweiten Abschnitt 76 und in einem vierten Abschnitt 80 in etwa parallel zueinander ausgerichtet und überkreuzen sich in einem mittleren dritten Abschnitt 78 an einem Kreuzungspunkt 79. An einem vorderen fünften Abschnitt 82 der Federarme 70, 72 sind Greifklauen 84, 86 oder dergleichen zum Festklemmen des Folienanfangs 46 der zweiten Folienrolle 38 vorgesehen.Common to the two embodiments of the film holding clip 32 that this is a clamping element in a first section 74 for clamping attachment to the second film roll 38, on which the two spring arms are located laterally 70, 72 connect. The spring arms 70, 72 are a second Section 76 and in a fourth section 80 approximately parallel aligned to each other and intersect in one middle third section 78 at a crossing point 79 a front fifth portion 82 of the spring arms 70, 72 Gripping claws 84, 86 or the like for clamping the beginning of the film 46 of the second film roll 38 is provided.

Nach der ersten Ausführungsform besitzen der Federarm 72 eine erste Abbiegung 92 zwischen dem zweiten Abschnitt 76 und dem dritten Abschnitt 78, der Federarm 70 eine erste Abbiegung 96 zwischen dem dritten Abschnitt 78 und dem vierten Abschnitt 80 sowie beide Federarme 70, 72 jeweils eine zweite Abbiegung 94, 98 zwischen dem vierten Abschnitt 80 und dem fünften Abschnitt 82.According to the first embodiment, the spring arm 72 has one first turn 92 between the second section 76 and the third section 78, the spring arm 70 a first turn 96 between the third section 78 and the fourth section 80 and both spring arms 70, 72 each have a second turn 94, 98 between the fourth section 80 and the fifth Section 82.

Die Federarme 70, 72 sind zueinander vertikal versetzt an dem Klemmelement angeordnet. Die Greifklauen 84, 86 oder dergleichen stehen im wesentlichen rechtwinklig nach unten gerichtet von dem fünften Abschnitt 82 der Federarme 70, 72 ab. Mit einer Länge etwa 40 cm ± 10 cm erstrecken die Federarme 70, 72 sich von dem Zentrum der zweiten Folienrolle 38 nach außen.The spring arms 70, 72 are vertically offset from one another on the Clamping element arranged. The gripping claws 84, 86 or the like are essentially directed downwards at right angles from the fifth section 82 of the spring arms 70, 72. With The spring arms 70 extend about 40 cm ± 10 cm in length, 72 outwards from the center of the second film roll 38.

Der Greifer 34 zur Betätigung der Folienhalteklammer 32 wirkt in einem Bereich 88 zwischen dem Klemmelement und dem Kreuzungspunkt 79 auf die Federarme 70, 72 ein. Durch die Einwirkung des Greifers 34 auf den Bereich 88 der Federarme 70, 72 werden diese im fünften Abschnitt 82 gespreizt und der Folienanfang 46 der zweiten Folienrolle 38 freigegeben. Mit der Spreizung der äußeren Abschnitte der Federarme 70, 72 der Folienhalteklammer 32 wird gleichzeitig der Federring 68 zusammengedrückt und kann dadurch vor Wickelbeginn selbsttätig mittels des Greifers 34 aus dem Hülsenkern 18 der zweiten Folienrolle 38 herausgezogen werden.The gripper 34 acts to actuate the film holding clamp 32 in an area 88 between the clamping element and the crossing point 79 on the spring arms 70, 72. By the action of the gripper 34 on the area 88 of the spring arms 70, 72 these are spread in the fifth section 82 and the Film start 46 of the second film roll 38 released. With the spread of the outer portions of the spring arms 70, 72 of the Foil holding clip 32 becomes spring ring 68 at the same time compressed and can therefore automatically before the start of winding by means of the gripper 34 from the sleeve core 18 of the second Foil roll 38 are pulled out.

Nach dem Ausführungsbeispiel der Fig. 8 sind die Federarme 70, 72 in etwa parallel zueinander ausgerichtet und in einem mittleren, dritten Abschnitt 78 mittels einer Fixierungsvorrichtung 100 miteinander verbunden. Die Fixierungsvorrichtung 100 besteht aus einer an einem Federarm 72 angeordneten Haltelasche 102, an der der andere Federarm 70 fest, drehbar oder schwenkbar angebracht ist. Im Bereich des zweiten Abschnitts 76 weist der Federarm 70 eine Durchtrennung 104 auf. Das Klemmelement ist als unterbrochener Federring 68 ausgebildet.8 are the spring arms 70, 72 aligned approximately parallel to one another and in one middle, third section 78 by means of a fixing device 100 connected. The fixation device 100 consists of a holding bracket arranged on a spring arm 72 102, on which the other spring arm 70 is fixed, rotatable or is pivotally attached. In the area of the second section 76, the spring arm 70 has a cut 104. The clamping element is designed as an interrupted spring ring 68.

Ein Greifer 34 zur Betätigung der Folienhalteklammer 32 wirkt in einem Bereich 88 zwischen dem Klemmelement und dem Kreuzungspunkt 79 bzw. der Fixierungsvorrichtung 100 auf die Federarme 70, 72 ein. Durch die Einwirkung des Greifers 34 auf den Bereich 88 der Federarme 70, 72 werden diese im fünften Abschnitt 82 gespreizt und der Folienanfang 46 der zweiten Folienrolle 38 freigegeben. Mit der Spreizung der äußeren Abschnitte der Federarme 70, 72 der Folienhalteklammer 32 wird gleichzeitig der Federring 68 zusammengedrückt und kann dadurch vor Wickelbeginn selbständig mittels des Greifers 34 aus dem Hülsenkern 18 der zweiten Folienrolle 38 herausgezogen werden.A gripper 34 for actuating the film holding clamp 32 acts in an area 88 between the clamping element and the crossing point 79 or the fixation device 100 on the Spring arms 70, 72 a. By the action of the gripper 34 on the area 88 of the spring arms 70, 72 these are in the fifth Section 82 spread and the beginning of the film 46 of the second Film roll 38 released. With the spread of the outer Portions of the spring arms 70, 72 of the film holding bracket 32 the spring ring 68 is pressed together and can thereby independently before the start of winding by means of the gripper 34 pulled out of the core 18 of the second film roll 38 will.

Nach der Ausführungsform der Fig. 9 kann das Klemmelement auch als kreisförmige Scheibe 106 ausgebildet sein, an deren Umfangswandabschnitt ein oder mehrere federbelastete Kugeln 108 sowie, in der Fig. 4 nicht dargestellt, die Federarme 70, 72 nach einem der Ausführungsbeispiele angeordnet sind.According to the embodiment of FIG. 9, the clamping element also be designed as a circular disk 106, on the Circumferential wall section one or more spring-loaded balls 108 and, not shown in FIG. 4, the spring arms 70, 72 are arranged according to one of the exemplary embodiments.

Die Vorrichtung 10 zum Wechseln des Hülsenkerns 18 der verbrauchten Folienrolle 17, 38 gegen eine neue Folienrolle arbeitet wie folgt:The device 10 for changing the core 18 of the spent Film roll 17, 38 against a new film roll works as follows:

Mittels eines Sensors auf der Folienabrollvorrichtung 12 wird festgestellt, daß die erste Folienrolle 17 verbraucht und nur noch einige Lagen Folie auf dem Hülsenkern 18 vorhanden sind. Mittels einer Steuerung wird der Folienverbraucher, z. B. die Palettenwickler gestoppt und ggf. die Folienabrollvorrichtung 12 in eine Grundposition, insbesondere in die untere Endstellung, gefahren. Das Folienende 44 der ersten Folienrolle 17 ist also noch auf den Hülsenkern 18 aufgewickelt. In der Sammel-/Vorratsstation 15 stehen eine Anzahl neuer Folienrollen 38 z. B. auf einem Förderband bereit, um mittels des Folienrollentransporters 14 zur Folienabrollvorrichtung 12 transportiert zu werden. Jede neue Folienrolle 38 ist mit einer Folienhalteklammer 32 versehen, die den Folienanfang 46 klemmend fixiert, so daß dieser über eine Länge von etwa 30 cm fahnenartig von der Folienrolle 38 absteht. Die Folienhalteklammer 32 ist je nach Ausführungsform entweder mittels des Federringes 68 in dem Hülsenkern 18 oder mittels des Haltebügels 90 an der Innenwand 89 des Hülsenkerns 18 und der Außenfläche 91 der Folienrolle fixiert.By means of a sensor on the film unrolling device 12 found that the first film roll 17 consumed and only there are still a few layers of film on the core 18. The film consumer, e.g. B. the Pallet winder stopped and if necessary the film unwinding device 12 in a basic position, in particular in the lower end position, hazards. The film end 44 of the first film roll 17 is therefore still wound on the core 18. In the Collection / storage station 15 are a number of new film rolls 38 z. B. on a conveyor belt ready by means of the film roll transporter 14 to the film unrolling device 12 to be transported. Each new film roll 38 is with a film holding clip 32 which the film start 46th clamped fixed, so that this over a length of about 30 cm from the film roll 38 protrudes like a flag. The film clip Depending on the embodiment, 32 is either by means of of the spring ring 68 in the sleeve core 18 or by means of Retaining bracket 90 on the inner wall 89 of the core 18 and the Fixed outer surface 91 of the film roll.

Der Folienrollentransportschlitten 14 fährt an eine bereitstehende neue Folienrolle 38 so heran, daß der Folienrollenhalter 31 über dem Hülsenkern 18 der neuen Folienrolle 38 positioniert wird. Danach senkt man den Folienrollentransporter 14 bzw. den Folienrollenhalter 31 ab, daß der zweite Folienrollenhalter 31 in den Hülsenkern 18 eintaucht. Nach einer Dehnung der Manschette 56 beispielsweise durch Beaufschlagung derselben mit Pressluft ist die neue Folienrolle 38 an dem Folienrollenhalter 38 festgelegt.The film roll transport carriage 14 moves to a standby one new film roll 38 so that the film roll holder 31 over the core 18 of the new film roll 38 is positioned. Then you lower the film roll transporter 14 or the film roll holder 31 that the second Foil roll holder 31 is immersed in the core 18. After an expansion of the cuff 56, for example, by acting on it the same with compressed air is the new film roll 38 fixed to the film roll holder 38.

Der Folienrollentransporter 14 wird nachfolgend nach oben und in Richtung der Folienabrollvorrichtung 12 bewegt, bis der Hülsenkernabnehmer 30 oberhalb des Hülsenkerns 18 der ersten verbrauchten Folienrolle 17 positioniert ist.The film roll transporter 14 is subsequently up and moved in the direction of the film unrolling device 12 until the Core pickup 30 above the core 18 of the first used film roll 17 is positioned.

Anschließend senkt sich der Hülsenkernabnehnmer 30 ab und taucht in den Hülsenkern 18 der ersten Folienrolle 17 ein. Die Manschette des Hülsenabnehmers 30 wird zur Fixierung des Hülsenkerns 18 der ersten Folienrolle 17 gedehnt. Der fast leere Hülsenkern 18 der ersten Folienrolle 17 und die zweite Folienrolle, 38 sind nun hintereinander auf gleicher Höhe positioniert. Gleichzeitig wird die Rückzugsvorrichtung 28 angehoben und die Manschette 66 in die Ausnehmung 67 in dem Fußabschnitt 57 des Dorns 16 eingeführt. Nach Dehnung der Manschette 66 beispielsweise durch Beaufschlagung von Pressluft, und Drehung der Rückzugsvorrichtung jedenfalls im Bereich der Manschette 66 um ihre Achse wird der Dorn 16 von dem Folienrollenhaltearm 64 gelöst und nach unten aus dem Hülsenkern 18 der ersten Folienrolle 17 herausgezogen, während dieser von oben von dem Hülsenkernabnehmer 30 gehalten wird. Then the sleeve core extractor 30 lowers and dips into the core 18 of the first film roll 17. The sleeve of the sleeve remover 30 is used to fix the The core 18 of the first film roll 17 is stretched. The almost empty core 18 of the first film roll 17 and the second Foil roll, 38 are now one after the other at the same height positioned. At the same time, the retraction device 28 raised and the cuff 66 into the recess 67 in the Foot portion 57 of the mandrel 16 inserted. After stretching the Cuff 66, for example by applying compressed air, and rotation of the retraction device in any case in the area the cuff 66 about its axis, the mandrel 16 of the film roll holding arm 64 released and down from the The core 18 of the first film roll 17 is pulled out while this is held from above by the sleeve core collector 30 becomes.

Dann wird der Folientransporter 14 so verschoben, daß der Folienrollenhalter 31 mit der zweiten Folienrolle 38 oberhalb des abgesenkten Dornes 16 angeordnet ist. Der Folienanfang 46 der zweiten Folienrolle 38 verläuft nun nahezu parallel zu dem Folienende 44 der ersten Folienrolle 17. Die Folienschweißvorrichtung 39 wird zur Herstellung einer Folienschweißstelle 47 zwischen dem Folienanfang 46 und dem Folienende 44 betätigt. Hierzu werden die Siegelstempel 40, 42 in Richtung des Siegelstempelanschlages 26 bewegt und verschweißen den Folienanfang 46 und das Folienende 44 miteinander. Die Schneidvorrichtung 36 wird anschließend um die Drehachse 35 geschwenkt und durchtrennt das Folienende 44 zwischen der Folienschweißstelle 47 und der ersten Folienrolle 17.
Während des Schneidvorganges wird das Folienende 44 durch Anlage an der Umlenkrolle 20 in einer definierten Position gehalten. Nach Durchtrennung des Folienendes 44 führt man den Dorn 16 durch Anheben der Rückzugsvorrichtung 28 in den Hülsenkern 18 der zweiten Folienrolle 38 ein und verriegelt den Dorn 16 durch Drehung der Manschette 66 mit dem Folienrollenhalterarm 64.Then the film transporter 14 is moved so that the film roll holder 31 with the second film roll 38 is arranged above the lowered mandrel 16. The film start 46 of the second film roll 38 now runs almost parallel to the film end 44 of the first film roll 17. The film welding device 39 is actuated to produce a film welding point 47 between the film start 46 and the film end 44. For this purpose, the sealing stamps 40, 42 are moved in the direction of the sealing stamp stop 26 and weld the film start 46 and the film end 44 to one another. The cutting device 36 is then pivoted about the axis of rotation 35 and cuts through the film end 44 between the film welding point 47 and the first film roll 17.
During the cutting process, the film end 44 is held in a defined position by being in contact with the deflection roller 20. After severing the film end 44, the mandrel 16 is inserted into the sleeve core 18 of the second film roll 38 by lifting the retraction device 28 and the mandrel 16 is locked by rotating the sleeve 66 with the film roll holder arm 64.

Der Greifer 34 an dem Arm 48 öffnet die Folienhalteklammer 32 durch Druckausübung in dem Bereich 88, so daß die Federarme 70, 72 geöffnet werden und den Folienanfang 46 freigeben. Durch Anheben des Folientransporters 14 in die obere Position wird die Folienhalteklammer 32 aus der zweiten Folienrolle 38 entfernt.The gripper 34 on the arm 48 opens the film holding clip 32 by exerting pressure in area 88 so that the spring arms 70, 72 are opened and release the beginning of the film 46. By lifting the film transporter 14 into the upper position the film holding clip 32 from the second film roll 38 away.

Der Folienrollentransporter 14 wird wieder in Richtung der Sammel-/Vorratsstation 15 bewegt und der Folienrollenhalter 31 über dem Hülsenkern 18 einer weiteren zweiten Folienrolle 38 positioniert. Der Greifer 34 öffnet sich und gibt die Folienhalteklammer 32 zur Aufnahme in einen Sammelbehälter frei. Die Manschette 56 des Hülsenkernabnehmers 30 wird zusammengezogen und gibt den Hülsenkern 18 der ersten Folien rolle 17 zur Aufnahme in einem weiteren Sammelbehälter frei.The film roll transporter 14 is again in the direction of Collection / storage station 15 moves and the film roll holder 31 over the core 18 of a further second film roll 38 positioned. The gripper 34 opens and gives the Foil holding clip 32 for inclusion in a collecting container free. The sleeve 56 of the sleeve core remover 30 is pulled together and gives the core 18 of the first foils roll 17 free for inclusion in another collection container.

Nach Verbrauch der zweiten Folienrolle 38 beginnt der Steuerungsablauf der Folienrollenwechselvorrichtung von vorn. After consumption of the second film roll 38 begins Control sequence of the film roll changing device from the front.

Bezugszeichenliste:Reference symbol list:

1010th
Vorrichtungcontraption
1212th
FolienabrollvorrichtungFoil unwinding device
1414
FolienrollentransporterFoil roll transporter
1515
Sammel-/VorratsstationCollection / storage station
1616
Dornmandrel
1717th
erste Folienrolle (alt)first film roll (old)
1818th
HülsenkernCore
2020th
UmlenkrollePulley
2222
UmlenkrollePulley
2424th
BremsrolleBrake roller
2626
SiegelstempelanschlagSeal stamp stop
2828
RückzugsvorrichtungRetraction device
3030th
HülsenkernabnehmerCore extractor
3131
Folienrollenhalter (für 38)Foil roll holder (for 38)
3232
FolienhalteklammerFoil clip
3333
Achseaxis
3434
GreiferGripper
3535
DrehachseAxis of rotation
3636
SchneidvorrichtungCutting device
3737
HaltearmHolding arm
3838
zweite Folienrolle (neu)second film roll (new)
3939
FolienschweißvorrichtungFoil sealing device
4040
SiegelstempelSeal stamp
4242
SiegelstempelSeal stamp
4444
FolienendeSlide end
4545
KopfabschnittHead section
4646
FolienanfangStart of slide
4747
FolienschweißstelleFoil sealing point
4848
Armpoor
4949
ZapfenCones
50 - 5450-54
Nasen (unter Federvorspannung)Noses (under spring preload)
5555
MantelflächeLateral surface
5656
dehnbare Manschette stretchable cuff
5757
FußabschnittFoot section
58 - 6258-62
Nasen (unter Federvorspannung)Noses (under spring preload)
6363
Verdickungthickening
6464
FolienrollenhaltearmFilm roll holding arm
6565
MantelflächeLateral surface
6666
dehnbare Manschettestretchable cuff
6767
AusnehmungRecess
6868
FederringSpring washer
7070
FederarmSpring arm
7272
FederarmSpring arm
7474
erster Abschnittfirst section
7676
zweiter Abschnittsecond part
7878
dritter Abschnittthird section
7979
KreuzungspunktCrossing point
8080
vierter Abschnittfourth section
8282
fünfter Abschnittfifth section
8484
GreifklaueGripping claw
8686
GreifklaueGripping claw
8888
BereichArea
8989
InnenwandInterior wall
9090
HaltebügelBracket
9191
AußenwandOuter wall
9292
erste Abbiegungfirst turn
9494
zweite Abbiegungsecond turn
9696
erste Abbiegungfirst turn
9898
zweite Abbiegungsecond turn
100100
FixierungsvorrichtungFixation device
102102
HaltelascheRetaining tab
104104
DurchtrennungSevering
106106
Scheibedisc
108108
KugelnBullets

Claims (20)

  1. Device (10) for changing foil rolls (17, 38), in particular for pallet wrappers, with a foil unwinding device (12) which has a vertical mandrel (16) to store the foil roll (17, 38) with a core (18), on which mandrel the foil roll (38) can be placed and from which the empty core (18) can be removed, with the foil roll transporter (14) positionable in relation to the foil unwinding device (12) for transporting the foil rolls (17, 38) between a collection/storage station (15) and the foil unroller device (12), which has a core holder (30) for the first consumed foil roll (17) and a foil roll holder (31) for the second new foil roll (38) and a mandrel retraction device (28) for the mandrel (16), where the core holder (30) and the foil holder (31) are each arranged suspended on an arm (48) of the foil roll transporter (14).
  2. Device according to claim 1, characterised in that the foil roll transporter (14) has a foil welding device (39) to produce a weld joint (47) between the start of the foil (46) on the second foil roll (38) and the end of the foil (44) on the first foil roll (78), and a cutting device (36) to cut the foil end (44) between the foil weld joint (47) and the first foil roll (17).
  3. Device according to claim 1 or 2, characterised in that the core holder (30) and the foil roll holder (31) are each formed as a spreadable annular sleeve (56) which can for example be expanded by means of compressed air, or as raisable and lowerable pegs with similar clamping means.
  4. Device according to claim 3, characterised in that several lugs (50, 52, 54) under spring tension projecting from the generated surface (55) of the peg (49) are arranged on the peg (49) spread around its periphery.
  5. Device according to any of claims 1 to 4, characterised in that the mandrel retraction device (28) has an annular, expandable sleeve (66) or similar clamping means, e.g. a square with a spring-loaded ball catch projecting at the side which can he held firmly by interference fit or by means of the projection in a recess (67) of a base section (57) of the mandrel (16).
  6. Device according to claim 5, characterised in that the mandrel retraction device (28) can be fixed or released to rotate about a central shaft and hence the mandrel (16) can be fixed or released to rotate on or off a foil roll holder (64) of the foil unroller device (12).
  7. Device according to any the previous claims, characterised in that the mandrel (16) is surrounded on the base section (57) by a conical thickening (63) and has lugs (58, 60, 62) spread around its periphery under spring tension and projecting from the generated surface (65) of the mandrel in a head section (45).
  8. Device according to any of the previous claims, characterised in that the core holder (30) and the mandrel retraction device (28) are arranged on a common shaft (33) adjustable vertically in relation to each other on the foil roll transporter (14).
  9. Device according to any of the previous claims, characterised in that the foil welding device (39) has a sealing stamp (40, 42) which can in particular be extended and retracted and to which is allocated a sealing stamp stop (26) arranged on the foil unrolling device (12).
  10. Device according to any of the previous claims, characterised in that during a foil roll change, the sealing stamp (40, 42) and the sealing stamp stop (26) lie immediately adjacent opposite each other and between the two can be introduced the foil end (44) of the first foil roll (17) and the foil start (46) of the second foil roll (38).
  11. Device according to any of the previous claims, characterised in that on the second foil roll (38) can be attached a removable foil holding clamp (32) with two spring arms (70, 72) projecting from the foil roller (38) and between the ends of the spring arms (70, 72) can be attached the unrolled foil start (46) of the second foil roll (38).
  12. Device according to claim 11, characterised in that the foil holder clamp (32) has an interrupted spring ring (68) which can be clamped in the core (18) of the second foil roller (38), where the spring arms (70, 72) from the ends of the spring ring (68) cross each other above the second foil roll (38) and project approximately radially or tangentially to the outside of the second foil roll (38).
  13. Device according to claim 11, characterised in that the foil holding clamp (32) has an essentially U-shaped retaining bracket (90), the legs of the U of which can be placed to clamp on the inner wall (89) of the core (18) and the outer surface (91) of the second foil roll (38), where the spring arms (70, 72) cross each other scissor-like and project approximately tangentially to the outside of the second foil roll (38) and between them clamp the foil start (46).
  14. Device according to any of claims 11 to 13, characterised in that the spring arms (70, 72) extend outwards by approximately 40 cm ± 10 cm, where applicable by more, from the centre of the second foil roll (38).
  15. Device according to any of claims 11 to 14, characterised in that the spring arms (70, 72), starting from a first section (74) for releasable fixing of the foil holding clamp (32) on the second foil roller (38) run essentially parallel to each other in a second section (76) and a fourth section (80), cross each other in a central third section (78) and in a fifth section (82) are fitted with gripper claws (84, 86) or similar to fix the foil start (46).
  16. Device according to any of the previous claims, characterised in that the foil roll transporter (14) has a gripper (34) to activate the foil holding clamp (32) with which the spring arms (70, 72) of the foil holding clamp (32) can be opened to release the start of the foil (46) and the foil holding clamp (32) can be removed from the second foil roll (38).
  17. Device according to claim 16, characterised in that the gripper (34) acts on the spring arms (70, 72) in an area (88) between the spring ring (68) or retaining bracket (90) and the crossing point (79).
  18. Device according to any of the previous claims, characterised in that the cutting device (36) has retaining arms (37) swivellable about a common rotational axis (35), between the free ends of which is clamped a hot wire.
  19. Device according to any of the previous claims, characterised in that the cutter device (36) is formed as a mechanical cutter device, in particular as a blade activated by a linear cylinder.
  20. Process for operation of a device according to any of the previous claims, characterised in that the foil roll transporter (14) with a second foil roll (38) attached on a second foil roll holder (31), the foil start (46) of which is fixed at a distance from the second roll (38) by means of a foil holding clamp (32), is raised vertically and moved horizontally onto the foil unroller device (12) such that the core holder (30) is positioned above the core (18) of the first foil roll (17), that the core holder (30) is lowered so that the second foil roll (38) lies at the same level as the core (18) of the first foil roll (17), where the core holder (30) is inserted in the core (18) of the first foil roll (17), that the core (18) of the first foil roll (17) is fixed on the core remover (30), the retraction device (28) is raised, the mandrel (16) is withdrawn downwards by means of the mandrel retraction device (28) out of the core (18) of the first foil roll (17), that then the foil roll transporter (14) is moved horizontally until the second foil roll (38) is positioned above the lowered mandrel (16), and the foil start (46) and foil end (44) lie at least approximately parallel with each other, that a foil welding device (39) is activated to create a weld joint (47) between the foil start (46) and the foil end (44), the foil end (44) is cut by means of the cutting device (36) between the weld joint (47) and the first foil roll (17), the mandrel (16) is inserted in the core (18) of the second foil roll (38) by means of the mandrel retraction device (28), the foil holding clamp (32) is then opened by means of a gripper (34) and then removed from the second foil roll (38), where the second foil roll holder (31) releases the second foil roll (38), that the foil roll transporter (14) is raised vertically and moved horizontally in the direction of the collection/storage station (15) until the second foil roll holder (31) is positioned above the next second foil roll (38) and the core remover (30) releases the core (18) of the first foil roll (17) and the gripper (34) releases the foil holding clamp (32), and the foil roll transporter (14) is lowered and the second foil roll (38) attached to the second foil roll holder (31) in order to be ready for transport to the foil unwinding device (12).
EP94113420A 1993-09-10 1994-08-27 Device and method for changing a foil strip roll and foil holding clamp Expired - Lifetime EP0644140B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9313713U 1993-09-10
DE4330717 1993-09-10
DE19934330717 DE4330717C2 (en) 1993-09-10 1993-09-10 Device for changing film rolls and method for operating one
DE9313713U DE9313713U1 (en) 1993-09-10 1993-09-10 Foil holding clip for a foil roll

Publications (3)

Publication Number Publication Date
EP0644140A2 EP0644140A2 (en) 1995-03-22
EP0644140A3 EP0644140A3 (en) 1995-08-23
EP0644140B1 true EP0644140B1 (en) 1998-08-05

Family

ID=25929408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113420A Expired - Lifetime EP0644140B1 (en) 1993-09-10 1994-08-27 Device and method for changing a foil strip roll and foil holding clamp

Country Status (3)

Country Link
EP (1) EP0644140B1 (en)
AT (1) ATE169283T1 (en)
DE (1) DE59406603D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110155771A (en) * 2019-05-30 2019-08-23 武汉市海泰伟创科技有限公司 A kind of packing film volume mounting device
CN117303066B (en) * 2023-11-29 2024-01-23 淄博博山凯顺包装制品有限公司 Corrugated paper winding device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140114B (en) * 1959-09-16 1962-11-22 Johann Jacob Keyser Device for pulling the full bobbins off the spindles on spinning or twisting machines
FR1478127A (en) * 1966-04-29 1967-04-21 Apparatus for accumulating and processing coils of strip material such as tape or paper
US4682929A (en) * 1986-02-03 1987-07-28 Hiroshi Kataoka Device for taking out sheet rolls and mounting sheet roll cores
DE3812514C2 (en) * 1988-04-15 1998-01-29 Focke & Co Packaging machine with a transport spigot arranged on a transport arm for new bobbins
IT1235976B (en) * 1989-12-18 1992-12-15 Gd Spa METHOD AND DEVICE FOR FEEDING AND REPLACEMENT OF REELS IN A PACKAGING MACHINE
DE69208504T2 (en) * 1991-04-16 1996-10-10 Tabac Fab Reunies Sa Method and transfer device for bobbins during unwinding
DE9111142U1 (en) * 1991-09-07 1991-11-28 Hacoba Textilmaschinen Gmbh & Co Kg, 5600 Wuppertal Device for loading a creel with full yarn spools and for removing its spool tubes which have been completely or partially freed of the expired spool yarn
DE4206330C2 (en) * 1992-02-29 1995-02-09 Schule Gmbh F H Device for wrapping packages of documents

Also Published As

Publication number Publication date
EP0644140A2 (en) 1995-03-22
EP0644140A3 (en) 1995-08-23
DE59406603D1 (en) 1998-09-10
ATE169283T1 (en) 1998-08-15

Similar Documents

Publication Publication Date Title
AT399856B (en) METHOD AND DEVICE FOR AUTOMATICALLY SEPARATING AND REWINDING A MATERIAL
EP1453750B1 (en) Device for producing foil rolls
DE2823326A1 (en) END STATION OF A MACHINE FOR TREATMENT OF STRIP-SHAPED MATERIAL, FOR EXAMPLE OF A PRINTING MACHINE
DE3811138A1 (en) METHOD AND DEVICE FOR TREATING THE FINAL SECTION OF ROLLED PAPER
DE3737503A1 (en) ROLL CUTTER
EP0462157B1 (en) System for joining webs of material
DE2600522C2 (en)
DE69914444T2 (en) Device for forming a splice connection in a paper web
DE69300341T2 (en) Apparatus for handling rolls of sheet material.
DE3723827C2 (en)
EP0179997B1 (en) Apparatus for packaging articles, such as heads of lettuce, bundles of carrots, asparagus, bananas, etc.
DE1474987A1 (en) Apparatus for continuously unwinding and joining together web-shaped material, e.g. Paper and plastic sheets
DE4304469A1 (en) Winding apparatus with a roll-changing device for web-like winding material to be wound up
DE19809516B4 (en) Device and method for automatically changing film rolls
DE4211858C2 (en) Device for coreless winding of flat material
DE69505334T2 (en) Production machine with web roll feed and removal of empty core tubes
DE3704048C2 (en)
EP0657374A1 (en) Supporting roll winding machine
DE1774416B1 (en) DEVICE FOR REMOVING RAIL-SHAPED MATERIAL, IN PARTICULAR A ROLL OF WIRE GRID, Wound On A Winding Mandrel
EP0644140B1 (en) Device and method for changing a foil strip roll and foil holding clamp
DE19601668A1 (en) Rotary and rotating plate type winding machines for spiral film wrapping of loaded pallets
DE4016484A1 (en) Packing device for rolls of paper webs - has chain conveyor with stepped action and associated positioning and folding devices
DE4330717C2 (en) Device for changing film rolls and method for operating one
DE8900818U1 (en) Device for unrolling and rerolling floor covering materials
DE3531731C1 (en) Device for continuously feeding a band-shaped material to a processing machine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE FR IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR IT LI NL SE

17P Request for examination filed

Effective date: 19951021

17Q First examination report despatched

Effective date: 19960906

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR IT LI NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980805

REF Corresponds to:

Ref document number: 169283

Country of ref document: AT

Date of ref document: 19980815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59406603

Country of ref document: DE

Date of ref document: 19980910

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ISLER & PEDRAZZINI AG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19981105

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000817

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000824

Year of fee payment: 7

Ref country code: BE

Payment date: 20000824

Year of fee payment: 7

Ref country code: AT

Payment date: 20000824

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001020

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010827

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

BERE Be: lapsed

Owner name: OFFICINA MECCANICA SESTESE S.P.A.

Effective date: 20010831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050827