EP0618161B1 - Automatischer Rollenwechsler für Verpackungsmaterialbahnen - Google Patents

Automatischer Rollenwechsler für Verpackungsmaterialbahnen Download PDF

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Publication number
EP0618161B1
EP0618161B1 EP94104767A EP94104767A EP0618161B1 EP 0618161 B1 EP0618161 B1 EP 0618161B1 EP 94104767 A EP94104767 A EP 94104767A EP 94104767 A EP94104767 A EP 94104767A EP 0618161 B1 EP0618161 B1 EP 0618161B1
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EP
European Patent Office
Prior art keywords
mandrel
unwinding
reel
transfer
reels
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
EP94104767A
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English (en)
French (fr)
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EP0618161A2 (de
EP0618161A3 (de
Inventor
Valter Spada
Giuseppe Tosi
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SASIB SpA
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SASIB SpA
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Publication date
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Publication of EP0618161A2 publication Critical patent/EP0618161A2/de
Publication of EP0618161A3 publication Critical patent/EP0618161A3/de
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Publication of EP0618161B1 publication Critical patent/EP0618161B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
    • B65H19/1836—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll the replacement web being accelerated or running prior to splicing contact
    • 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
    • B65H19/105—Opening of web rolls; Removing damaged outer layers; Detecting the leading end of a closed web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core
    • B65H19/123—Lifting, transporting, or inserting the web roll; Removing empty core with cantilever 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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • 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
    • B65H2301/413—Supporting web roll
    • B65H2301/4132—Cantilever arrangement
    • B65H2301/41322—Cantilever arrangement pivoting movement of roll support
    • B65H2301/413223—Cantilever arrangement pivoting movement of roll support around an axis parallel to roll axis
    • 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
    • B65H2301/4172—Handling web roll by circumferential portion, e.g. rolling on circumference
    • 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

Definitions

  • the invention relates to a device for automatically changing reels for feeding webs of wrapping material, especially for cigarette packaging machines,which comprises:
  • a device of this kind is known from the document GB-A-2256180, which discloses the most relevant prior art.
  • the unwinding mandrel is stationary in a fixed position and the unwinding reel is freely rotatable on this mandrel, while the second transfer mandrel cannot rotate about its axis and no station is provided for joining the head end of the web to the web of the nearly finished unwinding reel.
  • the object of the invention is to provide a reel-changing device of the type described above of inexpensive and relatively simple construction, capable in a functionally reliable way of automatically replacing finished reels of wrapping material with full reels even if these are very heavy, with no interruption in the web of wrapping material fed to the machine and without requiring that the machine be stopped.
  • the invention achieves the above objects with a device for changing reels for feeding webs of wrapping material, especially for cigarette packaging machines, according to the pre-characterizing part of claim 1 and characterized in that:
  • the transfer arm is located in front of the row of full replacement reels and in front of the unwinding reel and is able to pivot about an axis parallel with the common axis of the row of full reels and able to move along said axis in both directions away from and towards the row of full replacement reels, while the transfer mandrel is carried in a stationary manner on the transfer arm and points towards the row of full reels in the opposite direction to the unwinding mandrel, which unwinding mandrel engages the reels on the rear side away from the transfer arm and the transfer mandrel on the front side nearest the transfer arm, the centres of the cores of the reels in the corresponding collecting, joining and unwinding stations being situated on the circular path of the axis of the transfer mandrel in the angular movement of the transfer arm.
  • the frontmost reel of the row of full reels is set back in the axial direction and parallel with that, with respect to the unwinding reel and with respect to the transfer arm, while when the head end of the replacement reel is being joined to the tail end of the finished unwinding reel, the full replacement reel in the joining station and the unwinding reel are situated such that their axes are parallel with each other and are lined up basically next to each other.
  • the transfer mandrel and unwinding mandrel are provided with an expandable head that engages the cores of the reels only half way into their axial lengths.
  • the joining station comprises at least one endless suction-action conveyor belt which collects the head end of the full replacement reel and feeds it, towards the unwinding reel, to a subsequent joining device located downstream of the outlet end of the suction-action collecting/feeding belt, which belt extends in line with these reels underneath the replacement reel in the joining station and underneath the unwinding reel, while the suction-action collecting/feeding belt is accompanied by a knife which detaches the head end of the web of the full replacement reel and a knife which cuts the tail end of the web unwound from the nearly finished unwinding reel at a point upstream of the joining device.
  • the full replacement reel in the joining station and the nearly finished unwinding reel, there is another knife which cuts off the unwanted front part of the head end of the web of wrapping material of the replacement reel in the joining station, while between the outlet end of the suction-action collecting/feeding belt and the joining device is a two-position deflector which deflects the web of wrapping material on the collecting/feeding belt either towards the joining device or towards a receptacle which collects the unwanted front part of the head end of the web of wrapping material.
  • the cutting knife is positioned above the suction-action collecting/feeding belt which consists of two independent suction-action conveyor belts arranged one after the other in line with each other in the direction of travel, while between these is a stationary part linking their conveying sides together and acting as a supporting surface on which the cutting knife can cut.
  • the advantages of the reel-changing device according to the invention are obvious from the above description. It is of a relatively simple construction comprising a limited number of constructional parts. Moreover, said parts can easily be made with the strength required to move even relatively heavy reels.
  • the special arrangement of the collecting, joining and unwinding stations requires a very small number of displacements which can easily be controlled with the necessary precision even if the masses to be displaced are considerable.
  • the fast that the joining means are made in the form of a suction-action belt to collect and feed the head end of the web of wrapping material from the replacement reel under which it runs, means that it is possible to grasp, guide and feed to the joining device the head end of the web of wrapping material with the necessary reliability and accuracy. These means too are easy to construct.
  • the invention also covers other characteristics which further improve the above-described device for changing reels of wrapping material, and these are the subject of the dependent claims.
  • a device for changing reels for feeding webs of wrapping material is composed of a magazine for a row of full replacement reels 1.
  • the replacement reels 1 stand coaxially side by side and are supported on underlying conveying means which advance them in the direction of their common axis.
  • Said means consist of at least two endless conveyor belts 2 and 3 driven by a motor 4 in the direction of the common axis of the row of replacement reels 1.
  • the two conveyor belts 2 and 3 run parallel with the common axis of the row of replacement reels 1 and are inclined to form a conveying cradle transversely to their length in symmetrically opposite directions at the external radius of the replacement reels 1.
  • a transfer arm 7 which pivots about an axis parallel with the common axis of the row of replacement reels 1.
  • the arm 7 is mounted on a shaft 8 parallel with the common axis of the row of replacement reels 1 and is rotated by a motor 9.
  • the motor 9 is carried by a slide 10 in which the shaft 8 is supported rotatably on bearings 11.
  • the slide 10 is engaged so as to be able to slide in both directions of the shaft 8, which is parallel with the common axis of the row of replacement reels 1, on a guide 12 and is caused to slide by a motor 13 via a transmission which may be of any type.
  • the transmission is a screw and nut, the screw 15 being turned by the motor 13 and the nut 14 being fixed non-rotatably to the slide 10.
  • the transfer arm 7 carries without relative movement a transfer mandrel 16 with an expandable head.
  • the axis of rotation of the transfer mandrel 16 is parallel with the common axis of the row of replacement bobbins 1 and extends towards the frontmost replacement reel 1' of the row immediately in front of it.
  • the relative position of the transfer mandrel 16 and of the row of replacement reels on the conveyor belts 2, 3 are such that the axis of the replacement reels 1 on the conveyor belts 2, 3 coincides with the circular path followed by the transfer mandrel 16 as the transfer arm 7 pivots.
  • the transfer mandrel 16 can therefore be moved angularly to a position coaxial with the core 101 of the frontmost replacement reel 1' of the row, while because of the slide 10 it can be moved axially away from and towards it and its expandable head 17 inserted into the core 101.
  • the transfer mandrel 16 has radial stops to limit its insertion into the core 101 of a replacement reel 1.
  • these means may take the form of a disc 18 against which the opposite front side of the replacement reel 1 is pushed.
  • the insertion-limiting disc 18 carries sensors 19 to sense the presence of the replacement reel 1 on the transfer mandrel 16, these sensors may be of any type suitable for the purpose.
  • the conveyor belts 2 and 3 of the magazine are driven in advancing steps so as one by one to bring the first frontmost replacement reel 1' of the row to the collecting station at their outlet end.
  • an unwinding station with an unwinding mandrel 20 (Figs. 1 and 3) for an unwinding reel 1''.
  • the axis of the unwinding mandrel 20 is parallel with the common axis of the row of replacement reels 1 and extends in the opposite direction to that of the transfer mandrel 16, so that it engages the unwinding reel 1'' from the opposite side to that from which the transfer mandrel 16 engages the corresponding replacement reel 1'.
  • the unwinding mandrel 20 is mounted in a stationary manner in a position in which its axis coincides with the circular path of the transfer mandrel 16 on the transfer arm 1, so that said transfer mandrel 16 can be carried in opposition to the unwinding mandrel 20, coaxially therewith, as indicated by the numeral 16' in Fig. 1.
  • the unwinding mandrel 20 is also supported in such a way that it can move axially in both directions in the same way as can the transfer arm 7, on a slide 10 mounted on guides 12 and moved by means of a motor 13 via a screw and nut transmission 14, 15.
  • the unwinding mandrel 20 has an expandable head 17, behind which is an insertion-limiting disc 18 which also carries a sensor 19 to sense the presence of the unwinding reel 1'' on the mandrel 20.
  • FIG. 3 A further characteristic which is clear particularly from Fig. 3 is that the expandable heads 17 of the transfer mandrel 16 and unwinding mandrel 20 are of such dimensions, and are so positioned with respect to the insertion-limiting disc 18, that when the core 101 of a reel 1 is engaged, these heads do not project beyond the halfway line of the axial length of the cores 101. Consequently a single reel 1 can accommodate in its core 101, simultaneously and on opposite sides, the expandable heads 17 of both the opposing mandrels, namely the transfer mandrel 16 and the unwinding mandrel 20.
  • the first replacement reel 1' in the station where they are collected from the magazine, which is located at the outlet end of the conveyor belts 2 and 3, is set back axially and parallel with respect to the unwinding reel 1'' in the unwinding station, on the unwinding mandrel 20, to an extent that is approximately equal to, and preferably slightly greater than, the thickness of the reels 1.
  • the joining station comprises a suction-action collecting/feeding belt 5 which runs transversely, especially perpendicularly, to the common axis of the row of replacement reels 1 and close to them.
  • the suction-action collecting/feeding belt 5 is located at a lower level than the conveyor belts 2 and 3 of the magazine.
  • the suction-action collecting/feeding belt 5 is such that it is in line with the unwinding reel 1'' on the unwinding mandrel 20. Therefore, as can be seen in Fig. 1, the frontmost replacement reel 1' is taken from the collecting station, from the magazine, by means of an angular movement of the transfer arm 7 whereby the transfer mandrel 16 is brought coaxial with the core 101 of said reel 1' followed by an axial movement of approach to said replacement reel 1', whereby its expandable head 17 is inserted into the core 101 until the reel 1' stops against the insertion-limiting disc 18.
  • the full replacement reel 1' is removed coaxially from the row of replacement reels 1 in a reverse axial movement of the transfer arm 7 and brought to the position marked 1''' in the joining station by an angular movement of the transfer arm 7 in the opposite direction to the unwinding station. Furthermore the conveyor belts 2 and 3 are so driven as to advance the row of replacement reels 1 towards their outlet end, bringing the next frontmost reel of the row to the collecting station. In the joining station, the replacement reel 1''' is aligned vertically above the collecting/feeding belt 5 and with the unwinding reel 1'' on the unwinding mandrel 20, as shown in Figs. 1, 2 and 3.
  • a knife 23 which detaches the head end of the web of wrapping material from the full replacement reel 1'''.
  • the detaching knife 23 is aligned with said collecting/feeding belt 5, is supported so as to be able to pivot about an axis parallel with the axis of the full replacement reel 1''' and is loaded elastically by a spring 24 against this reel.
  • the correct position of alignment of the full replacement reel in the joining station is verified by means of two position sensors 25 that are located above the reel in position 1''', are separated in the axial direction thereof by an amount equal to its thickness and are each associated with one of the front sides of the reel.
  • the head end of the web of wrapping material detached by the detaching knife 23 is taken by the suction-action collecting/feeding belt 5 and fed by it towards the unwinding mandrel 20.
  • Another suction-action collecting/feeding belt 6 is provided as an extension of the first collecting/feeding belt 5 and is aligned with the latter, extending underneath the unwinding reel 1'' on the unwinding mandrel 20 and in vertical alignment with it.
  • the second suction-action collecting/feeding belt 6 is driven along in the same direction as the first belt 5. Downstream of its outlet end is a pair of opposing joining rollers 21, 22 between which the web of wrapping material from the unwinding reel 1'' is also passed by means of a deflecting roller 28. Downstream of the joining rollers 21, 22 is a pair of drive rollers 29, 30 which drive the unwound web of wrapping material along.
  • the two pairs of rollers 21, 22 and 29, 30 are parallel with each other.
  • the rollers 21, 22 and 29, 30 of each pair are lined up perpendicularly to the surface on which the web of wrapping material is being conveyed and the areas of mutual contact between the rollers lie in the extension of said conveying plane.
  • a knife 31 which cuts off the tail end of the web of wrapping material unwound from that reel.
  • the cutting knife is carried on the end of actuating means 32 which move it from the inactive withdrawn position to the active cutting position on the web of wrapping material.
  • actuating means 32 may be linear actuators, such as pneumatic or hydraulic cylinders or the like.
  • a linking part 26 which constitutes the cutting surface for another cutting knife 27.
  • the cutting knife 27 is for cutting the head end of the web of wrapping material unwound from the full replacement reel in position 1'', whose end has been detached from the reel 1''' by the detaching knife 23.
  • a deflecting part 33 which deflects the web or wrapping material unwound from the replacement reel 1''' which, by means of an actuator 34, can be moved alternately to a position of feeding the web of wrapping material to the joining rollers 21, 22 or to an underlying receptacle 35 for offcuts.
  • the head end of the web of wrapping material of the replacement reel 1''' in the joining station whose front end has been detached from it by the detaching knife 23, can be cut from the next length of wrapping material by the knife 27 and deflected as required into the offcuts receptacle 35, so that any damage to the head end cannot have negative repercussions during later processing stages, leading to errors in joining or faulty packets.
  • the next head end of the web of wrapping material of said reel is guided by the suction-action collecting/feeding belts 5, 6 to the joining rollers 21, 22, to which it is fed together with the tail end of the web of wrapping material unwound from the nearly finished unwinding reel 1'', underneath it in a position of perfect alignment and superimposition of the two lengths of wrapping material one upon the other.
  • the process of making the join involves activating the joining knife 31 which separates that part of the web of the finished unwinding reel 1'' which is joined to the head end of the web of the replacement reel 1''', from the final end of the web which is possibly still wound on the core 101 of the finished unwinding reel 1''.
  • the transfer arm 7 is made to transfer the replacement reel 1''' to the same unwinding mandrel 20.
  • this transfer is performed by an axial movement of the unwinding mandrel 20 laterally away from the belt or belts 5 and 6 and away from the full replacement reel 1''' into a position where there can be no interference between said replacement reel 1''' and the head 17 of the unwinding mandrel 20.
  • the transfer arm 7 is then moved angularly to bring the replacement reel on the transfer mandrel 16 into a coaxial position in front of the unwinding mandrel 20, as indicated by the dot-and-dash lines and by 1'''' in Fig. 1.
  • the unwinding mandrel 20 which is turning at the same speed as the transfer mandrel 16 is moved axially in the reverse direction towards the transfer mandrel 16 until its expandable head 17 enters the core 101 of the replacement reel.
  • the expandable head 17 of the unwinding mandrel 20 is locked into the core 101, while that of the transfer mandrel 16 is made inactive and withdrawn and the transfer mandrel 16 can be retracted and returned to the collecting station in front of the replacement reel 1' of the row of reels 1, by means of an axial movement away of the transfer arm 7 and a subsequent angular movement towards the magazine of replacement reels 1.
  • the axial movement of the mandrels 16 and 20 means that the replacement reel 20 has maintained its correct lateral alignment throughout the transfer.
  • the cutting knife 27 is so supported that it can move from a position of operational readiness in which it is above the web of wrapping material on the suction belts 5 and 6 and a rest position in which it is withdrawn laterally to the side of the suction belts 5 and 6.
  • the cutting knife 27 consists of a supporting bracket 36 that is supported movably on a pair of extensible arms.
  • the bracket 36 is carried by two parallel horizontal arms 37 which are parallel with the axes of the reels 1, 1', 1'', 1''' and slide longitudinally in coinciding tubular guides 38 in the supporting frame.
  • the slide 36 is moved by a linear actuator 39 which is parallel with the two arms 37 in an intermediate position between them and is hinged at one end to the frame 40 and at the other to the bracket 36.
  • the blade 41 of the knife is supported in a position of approximate perpendicularity to the web of wrapping material and can pivot towards the latter on a knife holder 42 which pivots about a horizontal axis running transversely to the web of wrapping material as it is guided along the suction belts 5 and 6.
  • the axis of pivoting is situated at an intermediate point on the knife holder 42, while one of its ends carries the blade 41 and the other end is hinged to the rod of a linear actuator 43 which is perpendicular to the surface of the wrapping material and is fixed at its opposite end to a corresponding extension of the bracket 36.
  • Fig. 4 illustrates in detail the construction of the expandable-head mandrels with reference to the transfer mandrel 16 only, said mandrels being basically identical.
  • a tubular cylindrical casing 50 Inside a tubular cylindrical casing 50 is a first tubular cylindrical shaft 53 supported rotatably about its axis on bearings 51 with sealing rings 52 at the ends of the casing 50. The forward end of the tubular cylindrical shaft 53 projects out of the end of the tubular casing 50, with which the insertion-limiting disc 18 is integrally formed.
  • the other end projects into an extension of the tubular casing 50 and has a thread on which is screwed a nut 54 pressing axially against an external annular shoulder 153 of the tubular shaft 53, against bearings 51 and against cylindrical tubular distance pieces 55 that are located between these and the nut and rotate with the tubular shaft 53.
  • the bearings 51 are furthermore housed in internal annular grooves in the tubular casing 50 which are defined axially by annular widenings 150 of the casing 50 and also by radial internal shoulders 156 on removable end pieces 56 of the casing 50.
  • the transmission shaft 57 is coupled in rotation to the tubular cylindrical shaft 53 by a key 58 in an axial groove 253 thereon and can slide coaxially axially in the tubular shaft 53 in both directions.
  • the key 58 is located at the forward end of the transmission shaft 57 and the groove 253 is greater in axial length than the key 58 in order to permit the mutual axial sliding of the shafts 53 and 57 and is opened appropriately at the end of the cylindrical shaft 53 for easy fitting.
  • the expandable head 17 is carried by the limiting disc 18 and comprises a cup part 117 inside which there are mounted for radial sliding a plurality of angularly equidistant jaws 217.
  • Mounted on the expandable-head 17 end of the transmission shaft 57 is a frustoconical expander part 59 which projects coaxially into the cup body 117 and is so oriented as to be divergent towards its free end.
  • the jaws 217 press against the surface of the expander part 59 with the ability to slide axially over it, their internal axial side being inclined in conformity with the frustoconical surface of the expander part 59, and they are loaded radially inwards against the expander part 59 by springs 60. Therefore, the axial sliding of the transmission shaft 57 through the tubular shaft 53 in one direction causes the jaws 217 to move out and in the other direction to retract radially.
  • the transmission shaft 57 is coupled in rotation to, and able to slide axially relative to, the shaft 61 of a motor 62.
  • the corresponding end of the transmission shaft 57 is tubular and has internal axial splines in which the splined end 161 of the motor 62 shaft 61 engages.
  • the axial movement of the transmission shaft 57 is controlled by a forked lever 63 whose fulcrum is at 64 and which pivots to cause the transmission shaft 57 to slide.
  • the forked lever 63 projects from the tubular casing 50 and is hinged at its outer end to the rod 165 of a linear actuator 65 which is fixed to the tubular casing 50 and is oriented such that the rod 165 slides parallel with the transmission shaft 57.
  • the forked lever 63 engages at an intermediate point via rollers 66 in an external annular groove 67 provided externally on that end of the transmission shaft 57 where the motor 62 is coupled. Pivoting of the lever therefore causes the transmission shaft 57 to move axially to expand or retract the head 17, and enables the same to rotate.
  • the joining of the tail end of the web from the finished reel 1'' to the head end of the web from the replacement reel 1''' is done by simultaneously deforming the two webs laid one upon the other.
  • This deformation can be of any design.
  • the parallel contrarotating joining rollers 21, 22 consist of a deforming roller with impression reliefs 122 on at least part of its outer surface, and a roller covered externally in a layer of an elastically deformable material or a metal roller comprising the negative form of the above reliefs.
  • impression reliefs 122 are so arranged as to form deformations of circular design. This ensures that the two layers of wrapping material hold fast to each other in any direction of relative movement. They are preferably arranged so as to form one or more parallel rows of areas of deformation 222 of circular design. In particular, the impression reliefs 122 are so shaped as to present at least two arms at an angle, e.g. forming an L, which are arranged on one or more concentric circles in each area of deformation 222.

Landscapes

  • Replacement Of Web Rolls (AREA)

Claims (12)

  1. Vorrichtung für das automatische Wechseln von Rollen zum Zuführen von Verpackungsmaterialbahnen, insbesondere für Zigarettenpackmaschinen, welche aufweist:
    - ein Magazin für eine Reihe von vollen Ersatzrollen (1), die koaxial zueinander auf Zuführmitteln (2, 3) stehen, um nacheinander Ersatzrollen (1) von dieser Reihe zu einer Sammelstation zuzuführen, welche die vorderste Rolle (1') der Reihe von Ersatzrollen (1) sammelt;
    - einen ersten Abwickeldorn (20), der um eine Achse drehbar ist, welche parallel zu der gemeinsamen Achse der Reihe von vollen Rollen (1) in dem Magazin (2, 3) ist, wobei es möglich ist, auf dem Dorn abnehmbar den Kern (101) einer Abwickelrolle (1'') anzuordnen;
    - einen zweiten Transferdorn (16), der eine Achse parallel zu dem ersten Abwickeldorn (20) hat, und der in beiden axialen Richtungen beweglich ist, und wobei es möglich ist, auf dem Transferdorn (16) abnehmbar den Kern (101) der vordersten Rolle (1') der Reihe von vollen Ersatzrollen (1) anzuordnen, wobei der Transferdorn (16) auf einem Transferarm (7) befestigt ist, durch welchen die auf dem Transferdorn (16) angeordnete vorderste volle Ersatzrolle (1') von der Sammelstation zu einer weiteren Station übertragen wird und dann von dieser Station zu der Abwickelstation, wo, nachdem der Kern (101) der beendeten Abwickelrolle (1'') von dem Abwickeldorn (20) abgenommen wurde, die volle Ersatzrolle (1'''') von dem Transferdorn (16) zu dem Abwickeldorn (20) gebracht wird, während der Transferdorn (16) dann von der Rolle (1'''') außer Eingriff gebracht wird und von der Abwickelstation zu dem Magazin zurückgebracht wird, dadurch gekennzeichnet, daß
    - der erste Abwickeldorn (20) angetrieben ist,
    - der Kern (101) der Abwickelrolle (1'') an dem Abwickeldorn (20) gesperrt ist,
    - der Abwickeldorn (20) in beiden axialen Richtungen beweglich ist,
    - der zweite Transferdorn (16) um seine Achse angetrieben ist,
    - es möglich ist, auf dem zweiten Transferdorn (16) den Kern (101) der vordersten Rolle (1') zu sperren,
    - eine Verbindungsstation geschaffen ist, in welcher das Kopfende der Verpackungsmaterialbahn mit dem hinteren Ende der Bahn der fast beendeten Abwickelrolle (1'') verbunden wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Transferarm (7) vor der Reihe der vollen Ersatzrollen (1) und vor der Abwickelrolle (1'') angeordnet ist und um eine Achse schwenken kann, die parallel zu der gemeinsamen Achse der Reihe der vollen Ersatzrollen (1) schwenken und sich entlang der Achse in beiden Richtungen von diesen weg und zu diesen hin bewegen kann, während der Transferdorn (16) in einer stationären Weise auf dem Transferarm (7) getragen wird und gegen die Reihe der vollen Ersatzrollen (1') in der entgegengesetzten Richtung zu dem Abwickeldorn (20) gerichtet ist, wobei der Abwickeldorn (20) auf der Rückseite weg von dem Transferarm (7) und der Transferdorn (16) auf der Vorderseite dem Transferarm (7) am nächsten mit den Rollen in Eingriff kommt, wobei die Mittelpunkte der Kerne (101) der Rollen (1, 1', 1'', 1''') in den entsprechenden Sammel-, Verbindungs- und Abwickelstationen an einem Punkt auf der Kreisbahn der Achse des Transferdorns (16) in der Winkelbewegung des Transferarms (7) liegen.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß in der Sammelstation die vorderste Rolle (1') der Reihe der vollen Ersatzrollen (1) in der axialen Richtung und parallel zu dieser bezüglich der Abwickelrolle (1'') auf dem Abwickeldorn (20) und bezüglich des Transferarms (7) zurückgesetzt ist, während die volle Ersatzrolle (1''') in der Verbindungsstation und die Abwickelrolle (1'') so liegen, daß ihre Achsen parallel zueinander sind und im wesentlichen nebeneinander angeordnet sind.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß in der Sammelstation die volle Ersatzrolle (1''') zwischen der nächsten vordersten vollen Ersatzrolle (1') der Reihe der Ersatzrollen (1) angeordnet ist, welche der Sammelstation und dem Transferarm (7) zugeführt wird und welche auf einem niedrigeren Niveau als die Reihe der Ersatzrollen (1) angeordnet ist, wobei der Transferarm anfangs zu einer solchen Position bewegt wird, daß sich der Transferdorn (16) koaxial zu dem Kern (101) der vordersten vollen Ersatzrolle (1') in der Sammelstation befindet und dann axial gegen ihn bewegt wird, während, nachdem er auf dem Transferdorn (16) gesperrt wurde, der Transferarm (7) axial von der Reihe der Rollen wegbewegt wird und dann winkelig in der entgegengesetzten Richtung zu dem Abwickeldorn (20) gesenkt wird.
  5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß der Transferdorn (16) und der Abwickeldorn (20) mit einem ausdehnbaren Kopf (17) versehen sind, der mit den Kernen (101) der Rollen (1) nur auf der Hälfte in ihre axiale Längen in Eingriff kommt, während die Übertragungen der vollen Ersatzrolle (1''') von der Verbindungsstation zu der Abwickelstation und von dem Transferdorn (16') zu dem Abwickeldorn (20) mittels einer ersten axialen Bewegung seitlich weg von dem Abwickeldorn (20) von der Ebene weg stattfinden, welche die Ersatzrolle (1''') enthält, zu einer gegenseitig nicht störenden Position zwischen dem Kopf (17) des Abwickeldorns (20) und der Ersatzrolle (1''') auf dem Transferdorn (16), während einer nachfolgenden Winkelbewegung des Transferarms (7) von der Verbindungsstation in die koaxiale Position des Transferdorns (16) mit dem Abwickeldorn (20) und dann mittels einer umgekehrten axialen Bewegung des Abwickeldorns (20) zu der Ersatzrolle (1'''') hin, so daß der Kopf (17) des Abwickeldorns (20) in seinen Kern (101) eintritt, wobei der Abwickeldorn (20) mit derselben Drehzahl wie der Transferdorn (16') angetrieben wird und durch den sich ausdehnenden Kopf (17) innerhalb des Kerns (101) der Ersatzrolle (1'''') in Eingriff kommt und wobei der Transferdorn (16') dann von dem Kern (101) durch das Zurückziehen des ausdehnbaren Kopfes (17) außer Eingriff kommt und von dem Kern in einer axialen Bewegung des Transferarms (7) weg von dem Abwickeldorn (20) zurückgezogen wird.
  6. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindungsstation mindestens ein Endlosförderband (5) mit Saugfunktion aufweist, welches das Kopfende der vollen Ersatzrolle (1''') sammelt und es zu der Abwickelrolle (1'') zu einer darauf folgenden Verbindungsvorrichtung (21, 22) zuführt, die abstromig von dem Auslaßende des Sammel-/Zuführbandes (5) mit Saugfunktion angeordnet ist, wobei sich das Band in Linie mit den Ersatzrollen (1''', 1'') in der Verbindungs- und Abwickelstation erstreckt, während das Sammel-/Zuführband (5) mit Saugfunktion von einem Messer (23) begleitet wird, welches das Kopfende der Verpackungsmaterialbahn von der vollen Ersatzrolle (1''') abtrennt, und von einem Messer (31), welches das hintere Ende der Verpackungsmaterialbahn schneidet, die von der beinahe beendeten Abwickelrolle (1'') an einem Punkt abstromig von der Verbindungsvorrichtung (21, 22) abgewickelt ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß zwischen der vollen Ersatzrolle (1''') in der Verbindungsstation und der beinahe beendeten Abwickelrolle (1'') ein anderes Messer (27) existiert, welches das unerwünschte Vorderteil des Kopfendes von seiner Verpackungsmaterialbahn abschneidet, während sich zwischen dem Auslaßende des Sammel-/Zuführbandes (5, 6) mit Saugfunktion und der Verbindungsvorrichtung (21, 22) ein Ablenker (33) mit zwei Stellungen befindet, welcher die Verpackungsmaterialbahn auf dem Sammel-/Zuführband (5, 6) entweder zu der Verbindungsvorrichtung (21, 22) hin oder zu einem Behälter (35) hin ablenkt, welcher das unerwünschte Vorderteil des Kopfendes der Verpackungsmaterialbahn sammelt.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das Schneidmesser (27) über dem Sammel-/Zuführband mit Saugfunktion angeordnet ist, das aus zwei unabhängigen Förderbändern (5, 6) mit Saugfunktion besteht, die hintereinander in Reihe zueinander in der Laufrichtung angeordnet sind, während sich zwischen diesen ein stationärer Teil (26) befindet, welcher ihre Förderseiten miteinander verbindet und als Stützoberfläche dient, auf welcher das Schneidmesser (27) schneiden kann.
  9. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Mittel (2, 3), welche die Reihe von Ersatzrollen (1) der Sammelstation (1') zuführen, aus zwei zueinander parallelen Förderbändern bestehen, die in derselben Richtung zu dem Transferarm (7) laufen, wobei die Förderbänder (2, 3) in der Richtung der gemeinsamen Achse der Reihe von Rollen (1) laufen und geneigt sind, um einen Schlitten quer zu ihrer Länge bezüglich der horizontalen Ebene an dem äußeren Durchmesser der Ersatzrollen (1) der Reihe zu bilden.
  10. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindungsvorrichtung aus zwei parallelen, gegenläufigen Rollen (21, 22) besteht, die gegeneinander gepreßt werden, wobei zwischen sie, übereinandergelegt und in Reihe zueinander, das Kopfende der Verpackungsmaterialbahn zugeführt wird, welches von der Ersatzrolle (1''') in der Verbindungsstation abgewickelt ist und auf ihre Oberseite das hintere Ende der Verpackungsmaterialbahn von der beendeten Abwickelrolle (1'') zugeführt wird, wobei eine Rolle (22) mit Prägereliefs (122) und die andere Rolle mit einer elastisch nachgebenden Abdeckung (121) versehen ist oder aus Metall hergestellt ist und mit zusätzlichen Vertiefungen für die Reliefs versehen ist.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Prägereliefs (122) auf einem Kreisbereich (222) oder auf mehreren angrenzenden oder aufeinanderfolgenden Bereichen (222) von kreisrunder Form angeordnet sind.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Prägereliefs (122) einen Radialarm und einen Tangentialarm aufweisen und in jedem Bereich (222) auf einem oder mehreren konzentrischen Kreisen angeordnet sind.
EP94104767A 1993-04-01 1994-03-25 Automatischer Rollenwechsler für Verpackungsmaterialbahnen Expired - Lifetime EP0618161B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITGE930031A IT1262268B (it) 1993-04-01 1993-04-01 Dispositivo automatico scambiatore di bobine, per l'alimentazione di nastri d'involucro, in particolare nelle macchine impacchettatrici di sigarette.
ITGE930031 1993-04-01

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EP0618161A2 EP0618161A2 (de) 1994-10-05
EP0618161A3 EP0618161A3 (de) 1994-11-30
EP0618161B1 true EP0618161B1 (de) 1997-05-14

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Publication number Priority date Publication date Assignee Title
DE19602050A1 (de) * 1996-01-20 1997-07-24 Rovema Gmbh Wechselvorrichtung einer Verpackungsmaschine für eine Vorratsrolle einer Folienbahn
IT1299847B1 (it) * 1998-02-17 2000-04-04 Gd Spa Metodo e dispositivo per l'alimentazione di bobine.
IT1312135B1 (it) * 1999-01-11 2002-04-09 Gd Spa Macchina automatica per la lavorazione di articoli dell'industria deltabacco.
CN112716078B (zh) * 2021-01-25 2024-02-09 宁波绿色纺织品有限公司 一种口罩机
CN115490067B (zh) * 2022-10-18 2023-06-02 常州海辰装饰材料有限公司 一种针对ixpe加铝膜加工的接膜设备及接膜方法
CN116409656B (zh) * 2023-04-04 2024-04-09 惠州市复锂科技有限公司 可实现辊轴自动回收的电池极片生产设备

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IT1235976B (it) * 1989-12-18 1992-12-15 Gd Spa Metodo e dispositivo per l'alimentazione ed il cambio di bobine in una macchina confezionatrice
IT1238919B (it) * 1990-05-03 1993-09-07 Gd Spa Metodo per la sostituzione di materiale in nastro in una macchina operatrice
IT1238967B (it) * 1990-05-31 1993-09-17 Gd Spa Dispositivo per il caricamento di bobine in una macchina confezionatrice
GB2256180A (en) * 1991-04-04 1992-12-02 Focke & Co Apparatus for supporting and transporting reels of web-like packaging material.

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IT1262268B (it) 1996-06-19
DE69403131D1 (de) 1997-06-19
ITGE930031A0 (it) 1993-04-01
EP0618161A2 (de) 1994-10-05
DE69403131T2 (de) 1997-10-30
EP0618161A3 (de) 1994-11-30
ITGE930031A1 (it) 1994-10-01

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