EP0650777A1 - Verfahren zur Herstellung und zum Fördern zum Umwickeln von Rollen aus bandförmigem Material, insbesondere Metallblech, und Schneidvorrichtung dafür - Google Patents

Verfahren zur Herstellung und zum Fördern zum Umwickeln von Rollen aus bandförmigem Material, insbesondere Metallblech, und Schneidvorrichtung dafür Download PDF

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Publication number
EP0650777A1
EP0650777A1 EP94114958A EP94114958A EP0650777A1 EP 0650777 A1 EP0650777 A1 EP 0650777A1 EP 94114958 A EP94114958 A EP 94114958A EP 94114958 A EP94114958 A EP 94114958A EP 0650777 A1 EP0650777 A1 EP 0650777A1
Authority
EP
European Patent Office
Prior art keywords
rolls
tubular element
cutting
strip material
drum
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.)
Ceased
Application number
EP94114958A
Other languages
English (en)
French (fr)
Inventor
Vincenzo Autelitano
Rossano Ciuti
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.)
Europa Metalli LMI SpA
Europa Metalli SpA
Original Assignee
Europa Metalli LMI SpA
Europa Metalli 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
Application filed by Europa Metalli LMI SpA, Europa Metalli SpA filed Critical Europa Metalli LMI SpA
Publication of EP0650777A1 publication Critical patent/EP0650777A1/de
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/006—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only winding-up or winding-off several parallel metal bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/24—Transferring coils to or from winding apparatus or to or from operative position therein; Preventing uncoiling during transfer
    • B21C47/245—Devices for the replacement of full reels by empty reels or vice versa, without considerable loss of time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • B26D3/163—Cutting tubes from the inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/106—Mechanisms in which power is applied to web-roll spindle for several juxtaposed strips
    • 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
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D2007/013—Means for holding or positioning work the work being tubes, rods or logs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/51—Cores or reels characterised by the material
    • B65H2701/511—Cores or reels characterised by the material essentially made of sheet material
    • B65H2701/5112—Paper or plastic sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/50—Storage means for webs, tapes, or filamentary material
    • B65H2701/53—Adaptations of cores or reels for special purposes
    • B65H2701/532—Tearable or frangible cores or reels

Definitions

  • the present invention relates to a method for the production and forwarding for wrapping of rolls of strip material, particularly sheet metal.
  • the invention also relates to a cutting device usable in this method.
  • strip material typically sheet metal intended to be worked by pressing or bending
  • rolls of commercial widths starting from rolls of larger widths coming directly from the rolling mill or from any subsequent heat treatments, by unwinding of the said roll and cutting longitudinally in the direction of unwinding, the roll thus being reduced to a plurality of strips each of which is wound so as to form a roll of the desired width.
  • This operation is normally carried out by a shearing machine, the rolls of sheared material being collected in a position immediately alongside on a common winding reel of the shearing machine.
  • the rolls of sheared strip may be wound on a bare spindle or on cardboard cylinders each of width equal to that of the respective roll.
  • the strips In the first case the strips must be fixed in the chuck of an expandable spindle, use frequently being made of double-sided adhesive tape to fix the first turn to the rest of the sheared roll which causes problems in the removal of the rolls wound on the spindle since the first turn of each roll may end beneath the turns of the adjacent roll or remain gripped by the spindle chuck, making it extremely difficult to separate the rolls and subsequently forward them to the wrapping line where the rolls are wrapped for sale.
  • the operators of the shearing machines must obtain cardboard cylinders cut to measure from an entire tube, which operation must be carried out off line and with the aid of a circular saw, and must then mount the cylinders on the winding spindle, centring them on the axis of the shearing machine and leaving interspaces between them, which operations are all slow and complicated. Moreover, during the expansion of the winding spindle it can easily happen that one or more of the cardboard cylinders breaks and must be replaced, with considerable loss of time.
  • the object of the invention is to provide a method for the production and forwarding for wrapping of rolls of strip material obtained by shearing of a wider roll, which does not suffer from the disadvantages described above and which, in particular, can be carried out without loss of time, with high productivity and low running costs.
  • a method for the production and forwarding for wrapping of rolls of strip material, particularly strips of sheet metal including a shearing step in which a plurality of rolls of the strip material of predetermined widths are formed simultaneously by the unwinding of a single roll of the strip material of suitable width, cutting it longitudinally in the direction of unwinding and by the winding of the strips of sheared material side by side on a single common collecting spindle of a shearing machine; characterised in that, before the shearing step, a disposable tubular element is mounted on the collecting spindle of the shearing machine which then receives the sheared strips with the formation thereon of a plurality of the said rolls disposed coaxially adjacent each other; and in that subsequently the semi-finished product thus obtained is removed from the spindle of the shearing machine, is coupled to means for supporting the rolls and is subjected to a cutting step in which the tubular element is sectioned into as many sections as there are rolls formed thereon; the cutting step being
  • the sole operation to be carried out in the shearing machine is that of mounting a whole tube or bush of cardboard on the winding spindle and fixing the strips to the cardboard bush with double-sided adhesive tape, which operation may be carried out quickly and without taking much time in centring on the axis of the shearing machine since the cardboard tube is generally longer than the width of the roll to be sheared. Moreover, there is no longer danger of breakage during the expansion of the spindle since the whole tube is much stronger than the individual cut cylinders thereof used in the prior art. Finally, the anchoring of the sheared material to the cardboard tube is easier than to the bare spindle and there are no longer problems in the removal of the rolls.
  • the operation of cutting the tube into pieces so that the individual rolls can be passed on to the packaging machine separately is also very simple and quick when it is carried out from inside the tube, as provided for by the invention, and, in any case, is effected independently of the operation of the shearing machine whereby it does not affect the length of the operating cycle of the latter.
  • the disposable tubular element is subjected to an incision step in which a plurality of annular grooves is formed in its outer surface, these then being used as reference elements in the cutting step.
  • the invention also relates to a cutting device usable in the method of the invention to effect the separation of the rolls wound coaxially, side by side, on the common disposable tubular support element;
  • a cutting device usable in the method of the invention to effect the separation of the rolls wound coaxially, side by side, on the common disposable tubular support element;
  • which device is characterised by comprising: a supporting cradle for the rolls provided with movable means for gripping the rolls themselves for providing radial support for the rolls around the outside thereof at at least three points distributed over an arc of more than 180°; means for moving the cradle relative to the rolls perpendicular to the axis of the tubular element; and a cutting head adapted to move relative to the cradle along the axis, and within, the disposable tubular element to cut the latter into the same number sections as there are rolls carried by the tubular element, each having a predetermined length;
  • the cutting head including a first drum carried so as to be fixed for rotation with a rotatable
  • reference number 1 indicates a cutting device for separating a plurality of rolls 2 of strip material of predetermined widths, generally different from each other, wound coaxially and side by side on a common disposable tubular support element 3;
  • the element 3 is constituted, in the particular, non-limitative embodiment described, by an ordinary tube or bush of cardboard of predetermined length and thickness, and the rolls 2 are generally constituted by bands or strips of sheet metal.
  • the cutting device 1 ( Figure 1) is illustrated as integrated in a plant 4 for the production and for the forwarding for wrapping of the rolls 2, the parts of which upstream and downstream of the device 1 are known; more particularly, the plant 4 comprises a known shearing machine 5 illustrated extremely schematically in Figure 1, in turn comprising an unwinding reel 6 for receiving a roll 7 of strip material to be cut into the rolls 2, a shearing assembly 8 and a winding spindle or reel 9 on which the rolls 2 are formed.
  • the plant 4 further comprises a known cross-shaped, storage carousel 12 located immediately downstream of the machine 5 and having, for example, four arms 13 for supporting the rolls 2, and a known wrapping line 15 for wrapping the rolls 2, only the initial part of which is illustrated schematically; the cutting device 1 is located adjacent the carousel 12, as is also the line 15, so as to be positioned relative to the flow of the rolls 2, indicated by the arrows ( Figure 1), on that side of the carousel 12 downstream of the machine 5 and upstream of the line 15 respectively.
  • a known cross-shaped, storage carousel 12 located immediately downstream of the machine 5 and having, for example, four arms 13 for supporting the rolls 2, and a known wrapping line 15 for wrapping the rolls 2, only the initial part of which is illustrated schematically; the cutting device 1 is located adjacent the carousel 12, as is also the line 15, so as to be positioned relative to the flow of the rolls 2, indicated by the arrows ( Figure 1), on that side of the carousel 12 downstream of the machine 5 and upstream of the line 15 respectively
  • both the machine 5 and the line 15 could be in other positions, even quite remote from the carousel 12, as long as suitable, known transport means, for example fixed conveyor devices or motor-driven carriages, are provided for conveying the rolls 2 from this to the carousel 12 and vice versa.
  • suitable, known transport means for example fixed conveyor devices or motor-driven carriages
  • the device 1 comprises a cradle support 20 for the rolls 2 having movable gripper means for gripping the rolls themselves and a cutting head 22 movable relative to the cradle 20 on the axis of the rolls 2 supported thereby; in this particular case the cradle 20 is fixed to a known elevator device 23, for example a carriage movable by means of four mechanical actuators to ensure perfect vertical positioning, carried by a carriage 24 slidable by hydraulic means within a channel 25 coaxial with the cutting head 22.
  • a known elevator device 23 for example a carriage movable by means of four mechanical actuators to ensure perfect vertical positioning, carried by a carriage 24 slidable by hydraulic means within a channel 25 coaxial with the cutting head 22.
  • the channel 25 extends from beneath one of the arms 13 of the carousel 12 located substantially coaxially with the head 22 up to the latter; the head 22 is freely rotatable and projects over the channel 25 from a motorised frame 27 ( Figure 4), movable on a straight base 28 aligned with the channel 25 and the axis of the arm 13 overlying it at any time (as a result of the rotation of the carousel 12) towards and away from the cradle 12 itself.
  • a motorised frame 27 Figure 4
  • the frame 27 is driven by a motor 29 through a screw/nut transmission 30 and in turn carries a motor 31 connected to rotate a hollow drive-shaft 32 in the sense indicated by the arrow ( Figure 4) which is freely rotatable in supports 35 fixed to the frame 27 and connected to the motor 31 by a known transmission 34.
  • the cradle 20 is movable relative to the rolls 2 carried by the arm 13 projecting over the channel 25 for engagement in a respective element 3 both perpendicular to the axis of the tubular element 3 and parallel thereto.
  • the means for gripping the rolls 2 consist of two opposing pairs of rocker arms 40 ( Figures 1 and 3) projecting on opposite sides and laterally of the cradle 20 and rocking about pins 41 parallel to the axis of the rolls 2 carried by the cradle 20 between the position illustrated in broken outline and that illustrated in continuous outline in Figure 3; the free ends of each pair of arms 40, opposite the pins 41, are connected to respective idle rubber rollers 42 disposed parallel to the pins 41 and arranged to contact the rolls 2 carried by the cradle 20 in the manner illustrated in Figures 1 and 4; this ensures that the strips are clamped at the moment when they are separated by the cutting of the cardboard bush 3, as will be explained; moreover, each assembly constituted by a set of rolls 2 and the respective cardboard bush or element 3 is arranged facing the cutting head 22 and on the axis thereof and is supported at at least three points around the outside of the rolls 2 (the rollers 42 and the cradle 20 itself) arranged on an arc of
  • the cutting head 22 which, on the basis of what has been described, is movable along the axis of the element 3 of the group of rolls 2 engaged at the time in the cradle 20 and into the element 3 itself, comprises ( Figure 5) a first drum 50 fixed to the shaft 32 for rotation therewith and in turn carrying a plurality of blades 51 movable radially outwardly against the action of respective helical springs 52, and a second cylindrical, cup-shaped drum 53 partially housing the drum 50 at its concave end; the drum 53 is freely rotatable relative to, and coaxial with, the drum 50 and its outer diameter is selected so that it is a sliding fit in the peripheral inner surface 55 of the tubular element 3 to be cut.
  • the blades 51 are in the form of circular discs and are freely rotatable on and project partly from slides 56 which are substantially L-shaped in radial section (only one of which is illustrated in Figure 5 for simplicity) and which are radially slidable on the drum 50, in this particular case within respective parallel radial channels 57 therein in correspondence with respective seats 57a for the springs 52; the slides 56 cooperate with the springs 52, each of which is packed with desired preloading between one arm of the respective L-shaped slide 56 extending parallel to the axis of rotation of the drum 50 and a respective adjustable shoulder fixed to the drum 50 and defined by a respective threaded screw 58 screwed radially into the drum 50 at the radially outer end of the respective seat 57a.
  • Each slide 56 is urged by its preloaded spring 52 so that its opposite end, or that nearer the axis of rotation of the drum 50, cooperates with an element 60 with an inclined face, in this particular case defined by a frusto-conical buffer, housed for axial sliding movement within an axial cavity 61 in the drum 50 into which the channels 57 converge, and partly within the hollow rotary shaft 32 to which the drum 50 is fixed.
  • the buffer or element 60 is screwed on to one end of a rod 64 so as to project therefrom, the rod being mounted coaxially within the shaft and slidable therein so as to be movable along the axis of rotation of the drum.
  • the rod 64 projects from the shaft 32 and is connected by a lever transmission 65 to an actuator 66, for example of pneumatic type, fixed to the frame 27.
  • Support for the drum 53 is provided by a hub 67 of the drum 50, with the interposition of a rolling bearing 68, and by a threaded pin 69 which also supports the element 60 at the end opposite the rod 64 and, for this purpose, is engaged in a blind hole 70 in the element 60 with the interposition of rollers 71; the whole is closed by a cover 72 fixed to the end of the drum 53 by screws 74.
  • the cutting head 22 optionally includes sensor means for detecting any variations in radial thickness of the tubular element 3, in this particular case, the presence or lack of presence of annular grooves 80 (illustrated out of scale in exaggerated dimensions for better visibility) in an outer cylindrical surface 81 of the element 3.
  • the sensor means comprise a known feeler 85 pivotable on and projecting axially from the drum 53; in a withdrawn position, illustrated in broken outline; the feeler 85 is housed within the radial dimensions of the drum 53 and does not interfere with the axial insertion of the head 22 into the tube 3 or its removal therefrom; in its extended position, illustrated in continuous outline, the feeler 85 projects radially at that end 86 of the tube 3 near to which the head 22 is brought and is able to slide on the surface 81 at least through a limited distance along the length of the tube 3 to identify a first groove 80 formed close to the end 86.
  • the feeler 85 is connected to a known PLC (not illustrated) programmed to control successive advancements beyond the first groove 80.
  • the sensor means comprise one or more emitters 88, of known type, for example ultrasound, supported by the drum 53 such that the waves emitted thereby pass through the thickness of the tube 3 to detect any variations in thickness due to the presence of one of more grooves 80.
  • the line is completed by an automatic centring station (not illustrated) of any known type between the roll axis (the axis of the assembly rolls 2/bush 3) and the axis of the cutting head 22, for example having an optical laser centring system.
  • a series of rolls 2 of predetermined widths are formed from a roll 7 of suitable width by a shearing step carried out by the machine 5 as described above.
  • a disposable tubular element 3 of predetermined thickness and length is mounted on the collecting spindle 9 of the shearing machine 5, this tubular element in any case being wider than the width of the roll 7; once the shearing step has been carried out, in entirely conventional, known manner, it is thus the bush or element 3 and not the bare reel 9 which receives the sheared strips 10 with the consequent formation thereon of a plurality of rolls 2 located coaxially adjacent each other on the element 3 ( Figure 2).
  • the semi-finished product thus obtained constituted by the element 3 and the respective group of rolls 2 is removed from the reel 9 and stored on the free arm 13 of the carousel 12 closest to the machine 5 by the simple fitting of the tube 3 axially onto the arm itself.
  • the carousel 12 is then rotated through a fraction of a revolution, corresponding to the angular distance between the arms 13, until the arm 13 carrying the said semi-finished product reaches a position above the channel 25 in front of the cutting head 22.
  • the rolls 2 are coupled to the support means constituted by the cradle 20 and the rollers 42; while the semi-finished product is supported over the channel 25 by the arm 13, the cradle 20, which has its arms 40 arranged in the position shown in broken outline ( Figure 3), is brought by the carriage 24 beneath this arm and, by actuation of the elevator 23, is brought into contact with the rolls 2 which rest thereon ( Figure 3).
  • the arms 40 are rotated so as to make the rollers 42 clamp the rolls 2 against the cradle 20; due to the suitable relative angular positioning (symmetrical and on an arc greater than 180°) of the rollers 42 and the supporting seat of the cradle 20 for the rolls 2, the entire semi-finished product is self-centred and clamped on the cradle 20 at the moment of clamping, and remains fixed thereto.
  • the cradle 20 is moved towards the head 22 through a distance sufficient to remove the tube 3, with the rolls 2, from the arm 13,and tube 3 by means for example of the said automatic centring station, not illustrated, is moved into a position in which it is strictly coaxial with the shaft 32, any adjustments being effected by means of the elevator 23.
  • the motor 29 is then actuated to advance the frame 27 automatically towards the channel 25 with the consequent sliding insertion of the head 22 into the tube 3, coaxially thereof to bring the drum 53 close to the end 86.
  • the rod 64 is held in its withdrawn position relative to the drum 53 by the actuator 66 so that the blades 51 do not project radially beyond the outer diameter of the drum 53 and hence do not interfere with the inner surface 55 of the tube 3.
  • the motor 29 reverses the travel of the head 22 to bring the blades 51 into correspondence with the axial position of the first roll 2, in line with that side thereof nearer the end 86, the shaft 32 is rotated and the actuator 66 advances the rod 64 so as to cause the progressive radial projection of the slides 56 from the drum 50; the blades 51 consequently come into contact with the surface 55, are rotated by friction about their own axes as a result of the rotation of the drum 50, like the satellites of an epicyclic reduction gear, and progressively penetrate ever further into the thickness of the tube 3, sectioning the latter in a radial direction, from the inside towards the outside.
  • the cutting head 22 is kept in abutment with the disposable tubular element 3 being cut by virtue of the cooperating contact of the drum 53 with the inner surface 55 of the tube 3.
  • a first section of the tube 3 which projects axially from the roll 2 closest to the end 86 is thus removed (without the production of chips or sawdust but by blade-cardboard incision); subsequently, the cutting head 22, after withdrawal of the blades 51, is further withdrawn so as to bring the blades 51 successively into a plurality of predetermined axial positions in which they are arranged in line with the opposite ends of each roll 2 and, in each of which positions, the tube 3 is again cut, as described above, to section the tube 3 into as many sections (in addition to the first one mentioned above) as there are rolls 2 which have been formed on the tube 3, each of a length equal to the width of the respective roll 2 wound thereon. During these operations, the rolls 2 remain stationary relative to each other in that they are firmly clamped on the cradle 20 whether the tube 3 is entire or otherwise.
  • the rolls 2 are uncoupled from the support means, separated and forwarded to the wrapping line 15.
  • the head 22 is withdrawn from the tube 3, which has just been cut into sections,and the cradle 20 is returned beneath the arm 13; the rolls 2, which have just been rendered independent of each other in that they are supported only by the respective section of the tubular disposable element 3, which has just been cut, are so fitted back onto the same arm; then, the arms 40 are opened, freeing the rolls 2, which remain engaged on the arm 13, the carousel 12 is rotated so as first to bring a new semi-finished product to be cut into the position in front of the head 22 and then to bring the group of rolls 2 which have been separated into a position in front of the line 15; from here the rolls 2 are taken from the arm 13, one at a time, and supplied to the line 15 until the arm 13 is empty. On subsequent rotation of the carousel 12 this represents itself in front of the machine 5 to take on a new semi-finished product to be brought to the head 22.
  • the tube 3 in order to enable the axial positions in which the blades 51 of the head 22 should be stopped to cut the tube 3 to be determined precisely, before the shearing step and after the mounting of the tube 3 on the reel 9 (figure 2), the tube 3 is subjected to an incision step in which annular grooves 80 are formed in its outer peripheral surface 81.
  • the grooves 80 are formed in predetermined axial positions with the use of respective separator discs 90 existing in the shearing machine 5 and normally used only to keep the turns of the various rolls 2 being formed on the reel 9 separated from each other; thus the grooves 80 are formed in positions such that, at the end of the shearing step, they are in line with the opposite sides of each roll 2 of strip material, as illustrated in Figure 2 and, above all, without the need for additional operations.
  • the grooves 80 may thus be used during the cutting step as reference elements for the sectioning of the disposable tubular element 3 providing that their position can be identified, for example by means of the sensors 88; clearly it would suffice for the head 22 to be controlled by an electronic central control unit (not illustrated, for example the PLC already mentioned) arranged to receive the signals from the sensors 88 so that all the cutting operations described above may be carried out completely automatically and with great precision.
  • an electronic central control unit not illustrated, for example the PLC already mentioned

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Making Paper Articles (AREA)
EP94114958A 1993-09-29 1994-09-22 Verfahren zur Herstellung und zum Fördern zum Umwickeln von Rollen aus bandförmigem Material, insbesondere Metallblech, und Schneidvorrichtung dafür Ceased EP0650777A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO930708A IT1260683B (it) 1993-09-29 1993-09-29 Metodo per la produzione e l'avvio al confezionamento di rotoli di un materiale in nastro, in particolare di una lamiera metallica, e dispositivo di taglio utilizzabile in tale metodo.
ITTO930708 1993-09-29

Publications (1)

Publication Number Publication Date
EP0650777A1 true EP0650777A1 (de) 1995-05-03

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EP94114958A Ceased EP0650777A1 (de) 1993-09-29 1994-09-22 Verfahren zur Herstellung und zum Fördern zum Umwickeln von Rollen aus bandförmigem Material, insbesondere Metallblech, und Schneidvorrichtung dafür

Country Status (3)

Country Link
EP (1) EP0650777A1 (de)
FI (1) FI944514A (de)
IT (1) IT1260683B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209116A2 (de) * 2000-11-20 2002-05-29 Arinox S.r.l. Hülse zum Aufwickeln von, gewöhnlich aus metallischem Material, nachgewältzten Bändern
EP4368551A1 (de) * 2022-11-10 2024-05-15 SK Nexilis Co., Ltd. Metallfolienkern
CN118528519A (zh) * 2024-07-24 2024-08-23 淮南华宫工程胶管有限责任公司 一种钢丝缠绕液压胶管生产设备及工艺

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191318A (en) * 1978-12-22 1980-03-04 Rogers J W Breakaway uncoiler
AU603759B3 (en) * 1990-06-19 1990-09-28 Nick Christodoulou Internal pipecutter

Patent Citations (2)

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AU603759B3 (en) * 1990-06-19 1990-09-28 Nick Christodoulou Internal pipecutter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209116A2 (de) * 2000-11-20 2002-05-29 Arinox S.r.l. Hülse zum Aufwickeln von, gewöhnlich aus metallischem Material, nachgewältzten Bändern
EP1209116A3 (de) * 2000-11-20 2003-03-26 Arinox S.r.l. Hülse zum Aufwickeln von, gewöhnlich aus metallischem Material, nachgewältzten Bändern
EP4368551A1 (de) * 2022-11-10 2024-05-15 SK Nexilis Co., Ltd. Metallfolienkern
CN118528519A (zh) * 2024-07-24 2024-08-23 淮南华宫工程胶管有限责任公司 一种钢丝缠绕液压胶管生产设备及工艺

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ITTO930708A1 (it) 1995-03-29
IT1260683B (it) 1996-04-22
FI944514A (fi) 1995-03-30
ITTO930708A0 (it) 1993-09-29
FI944514A0 (fi) 1994-09-29

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