[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP0721905A1 - Method and device for preparing the opening of a reel - Google Patents

Method and device for preparing the opening of a reel Download PDF

Info

Publication number
EP0721905A1
EP0721905A1 EP94810716A EP94810716A EP0721905A1 EP 0721905 A1 EP0721905 A1 EP 0721905A1 EP 94810716 A EP94810716 A EP 94810716A EP 94810716 A EP94810716 A EP 94810716A EP 0721905 A1 EP0721905 A1 EP 0721905A1
Authority
EP
European Patent Office
Prior art keywords
coil
flat blade
turn
blade
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94810716A
Other languages
German (de)
French (fr)
Other versions
EP0721905B1 (en
Inventor
Jean Cestonaro
David Vuilleumier
Pascal Christen
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.)
Philip Morris Products SA
Original Assignee
Fabriques de Tabac Reunies SA
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 Fabriques de Tabac Reunies SA filed Critical Fabriques de Tabac Reunies SA
Priority to DE69430064T priority Critical patent/DE69430064T2/en
Priority to EP94810716A priority patent/EP0721905B1/en
Priority to DE69522303T priority patent/DE69522303T2/en
Priority to EP95810754A priority patent/EP0716996B1/en
Priority to US08/570,278 priority patent/US6227088B1/en
Publication of EP0721905A1 publication Critical patent/EP0721905A1/en
Application granted granted Critical
Publication of EP0721905B1 publication Critical patent/EP0721905B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00Changing the web roll
    • B65H19/10Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/105Opening of web rolls; Removing damaged outer layers; Detecting the leading end of a closed web roll
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/40Type of handling process
    • B65H2301/46Splicing
    • B65H2301/4604Opening web rolls, remove outer layers
    • B65H2301/46044Opening web rolls, remove outer layers by cutting or perforating in tranverse direction
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00Cutting
    • Y10S83/929Particular nature of work or product
    • Y10S83/949Continuous or wound supply
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/343With means to deform work temporarily
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/525Operation controlled by detector means responsive to work
    • Y10T83/538Positioning of tool controlled
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/748With work immobilizer
    • Y10T83/7487Means to clamp work
    • Y10T83/7493Combined with, peculiarly related to, other element
    • Y10T83/75With or to tool guide
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/748With work immobilizer
    • Y10T83/7487Means to clamp work
    • Y10T83/7493Combined with, peculiarly related to, other element
    • Y10T83/7513Tool or tool support on movable clamp jaw
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/748With work immobilizer
    • Y10T83/7487Means to clamp work
    • Y10T83/7573Including clamping face of specific structure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8737With tool positioning means synchronized with cutting stroke
    • Y10T83/8739Anvil moves into and out of operative position
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8745Tool and anvil relatively positionable
    • Y10T83/8746Straight line
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8748Tool displaceable to inactive position [e.g., for work loading]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8821With simple rectilinear reciprocating motion only
    • Y10T83/8822Edge-to-edge of sheet or web [e.g., traveling cutter]

Definitions

  • the present invention relates to a method and a device for preparing the opening of a coil consisting of a strip of flexible material wound in superimposed turns and comprising an upper turn whose free end is fixed on the turn which is directly below it, said coil being disposed on a support axis and comprising two parallel sides.
  • the upper coil of the coil is covered with a protective strip, made of a material which may be different from that constituting the coil; by upper turn of the coil is meant in the following description this possible protective strip as well as the first turn or turns of the coil.
  • An object of the invention is therefore to propose a method compatible with known coil opening methods and making it possible to ensure that the turn situated directly below the last cut turn is absolutely intact.
  • Another object of the invention is to propose a device for preparing the opening of a reel which can be adapted to a device for opening a known reel and keeping intact the turn situated directly below the last turn. cut.
  • Figure 1 shows a cutting preparation device 1 disposed above a coil 2 fixed to a support axis (not shown) and comprising a plurality of turns 20 including in particular an upper turn 21 whose front end is glued on the turn which is directly below it in order to close the coil.
  • the coil 2 can also be defined by its two lateral surfaces forming its two parallel sides 22.
  • the device 1 firstly comprises a first actuator 10, for example a hydraulic or pneumatic cylinder, the outer cylinder of which is fixed to a machine frame 3 by known means 30.
  • a first actuator 10 for example a hydraulic or pneumatic cylinder, the outer cylinder of which is fixed to a machine frame 3 by known means 30.
  • the means 30 allow the device 1 to move in order to bring it above the coil 2 to prepare its opening and then retract said device so that it does not interfere with the subsequent operations to be carried out. on the spool. It can be considered that during the operation of the preparation device 1 the external body of the actuator 10, respectively the cylinder of the jack, is fixed and immobile relative to the coil 2.
  • the actuator 10 comprises a movable rod 11, capable of move in one direction or the other, in a direction perpendicular to the support axis of the coil and directed towards said support axis.
  • the end of the movable rod 11 of the jack 10 is fixed to a first support 12 extending parallel to the support axis of the coil, preferably behind the coil 2, as can be seen particularly in FIG. 2.
  • Guide means 12A prevent rotation of the support 12 in order to keep the support 12 always aligned with the support axis of the coil.
  • a baluster 12B maintains a blade support 13 at a determined vertical distance fixed to the support 12.
  • a flat blade 13A can slide inside the blade support 13, in a direction parallel to the support axis of the coil 2, passing from a retracted position as seen in FIG. 2 to an advanced position in the direction of the coil 2, as seen in FIG. 4.
  • the advance movement or removal of the flat blade 13A is obtained by a second motion actuator 13B, pneumatic or hydraulic included in the blade support 13.
  • a double set of braces 15 each consisting of a pair bars 15A and 15B is arranged on each of the sides of the support 14 parallel to the sides of the coil 2 and below said support.
  • a first central axis 16 connects each of the crosspieces 15 by a preferably central position of each of the bars 15A and 15B, allowing said bars to pivot around said first central axis.
  • each of the bars 15A is fixed, each on an opposite face of the support 14, by means of a second axis 16A, passing through said support and allowing said bars to pivot simultaneously around said second axis.
  • the upper ends of the bars 15B are likewise connected by a third axis 16B, said axis being sliding in a direction perpendicular to the axis of the coil 2 as well as to the direction of movement of the first movable rod 11, in a borehole 14A through and extending in the direction of the second axis 16A, of the support 14.
  • the end of the support 14 distal from that fixed to the support 12 supports a third actuator 17, which can also be a pneumatic or hydraulic cylinder, comprising a second rod mobile 17A, fixed at its end to the axis 16B and able to move said axis parallel to itself in the bore 14A, in the direction defined above.
  • the lower ends of each of the bars 15A and of each of the bars 15B are connected by two fourth axes 16C, said axes not being pivotable relative to the bars 15A or to the bars 15B.
  • the two axes 16C each support a friction lining 18 connecting together and being arranged below the lower ends of the two opposite bars 15A, respectively of the two opposite bars 15B.
  • the friction linings 18 are therefore parallel to the support axis of the coil 2 and are each covered, on their face facing the coil 2, with a coating having a high coefficient of friction with respect to the material constituting the turns 20 of the coil, for example rubber.
  • a coating having a high coefficient of friction with respect to the material constituting the turns 20 of the coil for example rubber.
  • the contact surfaces of said coatings are rounded, longitudinal ridges can be provided on these surfaces.
  • the spacing between the two opposite cross-pieces 15, respectively the length of the friction linings 18, is at least equal to the width of the strip of material constituting the coil 2.
  • the movable rod 17A of the actuator 17 is in the retracted position, respectively the axis 16B is in a position remote from the axis 16A.
  • the actuator 17 By activating the actuator 17 so as to bring the axis 16B closer to the axis 16A, one obtains by a chisel effect of the braces 15 a bringing together of the lower ends of the bars 15A and 15B of each brace, respectively a bringing together of the two fittings of friction 18.
  • the two friction linings 18 lower slightly towards the coil 2.
  • each of the bars 15A pivots around the axis 16A
  • each bars 15B pivots in the opposite direction around the axis 16B
  • the ends of each of the bars respectively the contact surfaces of the linings 18 pivot slightly against one another.
  • a cutting device 4 in particular comprising a cutting blade 40 and which is arranged in the standby position.
  • the coil 2 is stationary on its support axis.
  • the means 30, for bringing the preparation device 1 are actuated to position said device near the upper turn 21, the two friction linings 18 slightly above of the coil 21, being parallel to the axis of the coil and not being in contact with the coil 21 while the blade 13A is positioned a few tenths of a mm below the upper surface of the upper coil 21.
  • the distance relative to said upper surface to which the flat blade 13A is disposed essentially depends on the thickness of the strip of material constituting the upper turn 21.
  • this starting position of the device 1 relative to the coil 2 can be done manually or automatically by means of a position detector device (not shown, but can be of the same type as that described more bottom next to the second embodiment of the device) coupled to a control unit 9, capable of determining that the device is positioned correctly above the turn 21 and that the flat blade 13A is positioned correctly with respect to said turn.
  • a position detector device not shown, but can be of the same type as that described more bottom next to the second embodiment of the device
  • the actuator 17 is actuated, which brings the axis 16B closer to the axis 16A causing the movements described above, ie a descent of the contact surfaces of the friction linings 18 in contact and pressing on the turn 21, and a bringing together of the two said linings accompanied by their pivoting movement.
  • These movements of the two linings 18 were sufficient, as soon as they came into contact with the upper coil 21, to pinch it slightly and then to lift it and create an arch 21A between the two linings 18, as seen in the figure 3.
  • This arch 21A on the coil 21 is therefore caused by the combination of the movements described, firstly a strong contact between the linings 18 and two distant surfaces of the coil 21, then by the bringing together and pivoting of the two linings which , given the high coefficient of friction of their coating, do not slip on the coil 21.
  • the actuator 17 is stopped, while the actuator 13B is activated in order to advance the flat blade 13A so that its end passes into the space included under the arch 21A, ie between the upper turn 21 and the turns of the lower layers 20.
  • the flat blade 13A is held in this position and the cutting device 4, respect ively the cutting blade 40, is brought between the bars of the spider 15, directly above the arch 21.
  • the means by which the blade 40 is actuated are not part of the preparation device according to the invention, but of one of the cutting devices described in one of the patents mentioned in the introduction.
  • the blade 40 can thus cut the arch 21A, respectively the upper turn 21 by sinking only as far as the flat blade 13A against which it finally comes into abutment.
  • the flat blade 13A has protected the first of the turns of the lower layers 20 which therefore cannot be started by the blade 40.
  • the end of the flat blade 13A penetrating between two turns of the coil 2 is of rounded shape so as not to hurt the turns.
  • the cutting blade 40 is removed, then the flat blade 13A by the actuator 13B, then the actuator 10 is again actuated in order to separate the linings 18 from the coil 21 and the means 30 move the device 1 away from the coil 2.
  • the means by which the upper end of the coil 21 is gripped in order to be brought to the manufacturing machine are also not described here since they are in the patents cited above.
  • the cutting is only carried out on the upper turn 21, in fact the arch 21A is formed by several of the upper turns of the coil, possibly with the protective strip mentioned previously, so that several turns are then cut.
  • the device for preparing the opening of a reel has been described above according to a preferred embodiment, it is obvious that variants of this embodiment can be provided; in particular it is not at all necessary that the device 1 be placed above the coil 2 in a vertical position, in fact it could be oriented at any angle relative to the center of the coil, provided that the relative angles of the various movements described are preserved.
  • the actuators described as being pneumatic or hydraulic cylinders could be made up of any element capable of producing the movements described.
  • Another embodiment of the means making it possible to bring the two axes 16A and 16B closer together could also be provided, for example a rod having two threaded sections in opposite directions, rotated by the actuator 17, each of the threaded sections passing through a threaded hole of the axis 16A, respectively of the axis 16B.
  • the central axis 16 has been described as being arranged in a central position of each of the bars 15A and 15B; in fact it could be shifted so as to have a movement of the linings 18 multiplied or divided with respect to the movement of approximation of the two axes 16A and 16B.
  • the support 14 supporting the crossbars 15 and the friction linings 18 is independent of the support 12 supporting the blade 13A, so that it can be moved away from the coil 2 after the blade 13A has been inserted in the spool in order to leave, if necessary, sufficient space for the cutting device 4.
  • FIGS. 5 to 8 Another embodiment of a device for preparing the opening of a reel is shown in FIGS. 5 to 8.
  • a coil 2 comprising a plurality of turns 20 and in particular an upper turn 21 is fixed on a support axis not shown.
  • the preparation device here consists of a blade holder device 5, a position detection device 6 and a control unit 9; it can be completed with a blowing device 7.
  • These different elements are shown separated from each other in order to make the figures clearer, but it is obvious that they are part of the same assembly and are connected to a common plate comprising displacement means capable of bringing said elements into an action position close to the spool 2.
  • the blade-holding device 5 comprises a flat blade 50, absolutely similar to the flat blade 13A described above, and being able, like it, to assume a retracted position , as in FIG. 6, or an advanced position, as in FIG.
  • a position detection device 6 of said upper turn consisting of a another actuator 60 equipped with a touch element 61, preferably a caster, which, positioned first clearly above the upper turn 21, as shown in FIG. 5, then lowers the touch finger 61 until 'it comes into contact with the upper turn 21, as seen in Figure 7.
  • This position is raised by the control unit 9 which can then activate the actuator 52 in order to place the flat blade 50 a few tenths of mm below the dimension corresponding to the upper surface of the upper turn 21.
  • the distance from said upper surface on which the flat blade 50 is disposed depends essentially on the thickness of the strip of material. u constituting the coil 2. Taking into account that the turns of the coil 2 are not too tight, the blade 50 is gently introduced under the upper turn 21, preferably for the reason indicated above with regard to the first embodiment, under at least two of the upper turns. This advance movement of the flat blade 50 can be carried out while the coil 2 is stationary or when the latter is driven by a slow rotational movement in the direction going from the caster 61 towards the flat blade 50.
  • the direction of this rotational movement is opposite to that of the normal unwinding of the reel so that, during this rotational movement, the flat blade 50 tends to be pushed upward by the spiral winding of the turns of the reel .
  • the roller 61 can continue to detect the position of the upper layer 21 in order to correct the position of the flat blade 50 in the case where the coil 2 is not exactly circular.
  • the spool is stopped in the event that it has been rotated and, as for the first embodiment described, a cutting device 4 is approached in order to cut the turns arranged at- above the flat blade 50, cutting only these, the cutting movement being limited by the flat blade 50. As shown in FIG.
  • the preparation device can be supplemented by a blowing device 7, essentially composed a blowing nozzle 70, which projects a jet of pressurized air directly above the flat blade 50, in the direction of the coil 2, in order to help lift the upper turns, thus facilitating the penetration of the flat blade 50.
  • the detection means 6 can also be designed so as not to come into contact with the upper turn 21, for example consist of optical detection means.
  • a preparation device makes it possible, in cooperation with a device for cutting and gripping the upper turns of a coil, to obtain a strip intact material for later use, said strip could not have been damaged by the cutting device.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

The procedure, e.g. for a reel of paper (23) used in cigarette manufacture, consists of introducing a flat blade (32) between the two outer layers of paper, which are stuck together, and cutting the outer layer (24) to free its end. The flat blade (32) forms part of a mechanism (3) for preparing an opening reels, and is designed to advance automatically into a position where it penetrates between the two outer layers. Once the blade has been inserted the outer layer is cut with a following blade (35) performing a reciprocating motion and acting as a screen to protect the underlying layers. The free end of the upper layer of paper is gripped as it is cut, so that it is ready to be connected to another paper layer.

Description

La présente invention concerne un procédé ainsi qu'un dispositif de préparation de l'ouverture d'une bobine constituée d'une bande d'un matériau souple enroulée en spires superposées et comportant une spire supérieure dont l'extrémité libre est fixée sur la spire qui lui est directement inférieure, ladite bobine étant disposée sur un axe support et comportant deux flancs parallèles.The present invention relates to a method and a device for preparing the opening of a coil consisting of a strip of flexible material wound in superimposed turns and comprising an upper turn whose free end is fixed on the turn which is directly below it, said coil being disposed on a support axis and comprising two parallel sides.

De nombreux brevets décrivent différents procédés et dispositifs dans lesquels il est nécessaire d'ouvrir une bobine constituée notamment d'une bande de papier ou d'un autre matériau et destinée à alimenter une machine de fabrication, en particulier les brevets EP-A-0.318.427, EP-A-0.331.634 et EP-A-0.475.886. Ces brevets prévoient de manière générale qu'une lame coupante, disposée perpendiculairement au sens de déroulement de la bande de papier est appliquée sur la spire supérieure de la bobine afin de la couper. La lame coupante étant appuyée sur la spire supérieure avec une certaine force et/ou s'enfonçant dans la bobine d'une certaine distance, généralement plusieurs spires de la bande sont coupées simultanément, sans que ce nombre de spires puisse être contrôlé. Par ces systèmes, il arrive fréquemment que la spire située directement au-dessous de la dernière spire coupée soit entamée par la lame, créant ainsi un point faible amenant à une rupture ultérieure de la bande en ce point. Une telle rupture nécessite un arrêt de la machine d'où une perte de productivité. Dans certains cas, la spire supérieure de la bobine est recouverte d'une bande de protection, faite d'un matériau pouvant être différent de celui constituant la bobine; par spire supérieure de la bobine, on entend dans la suite de la description cette éventuelle bande de protection ainsi que la ou les premières spires de la bobine.Numerous patents describe various processes and devices in which it is necessary to open a coil made up in particular of a strip of paper or of another material and intended to supply a manufacturing machine, in particular the patents EP-A-0.318 .427, EP-A-0.331.634 and EP-A-0.475.886. These patents generally provide that a cutting blade, arranged perpendicular to the direction of unwinding of the paper strip is applied to the upper turn of the spool in order to cut it. The cutting blade being pressed on the upper turn with a certain force and / or sinking into the coil from a certain distance, generally several turns of the strip are cut simultaneously, without this number of turns being able to be controlled. By these systems, it frequently happens that the turn situated directly below the last cut turn is started by the blade, thus creating a weak point leading to a subsequent rupture of the strip at this point. Such a break requires stopping the machine, resulting in a loss of productivity. In some cases, the upper coil of the coil is covered with a protective strip, made of a material which may be different from that constituting the coil; by upper turn of the coil is meant in the following description this possible protective strip as well as the first turn or turns of the coil.

Un but de l'invention est donc de proposer un procédé compatible avec les procédés d'ouverture de bobine connus et permettant d'assurer que la spire située directement au-dessous de la dernière spire coupée est absolument intacte.An object of the invention is therefore to propose a method compatible with known coil opening methods and making it possible to ensure that the turn situated directly below the last cut turn is absolutely intact.

Un autre but de l'invention est de proposer un dispositif de préparation de l'ouverture d'une bobine pouvant être adapté sur un dispositif d'ouverture d'une bobine connu et conservant intacte la spire située directement au-dessous de la dernière spire coupée.Another object of the invention is to propose a device for preparing the opening of a reel which can be adapted to a device for opening a known reel and keeping intact the turn situated directly below the last turn. cut.

Ces buts sont atteints par un procédé répondant aux caractéristiques des revendications 1 à 6 ainsi que par un dispositif possédant les caractéristiques mentionnées aux revendications 7 à 14.These objects are achieved by a method meeting the characteristics of claims 1 to 6 as well as by a device having the characteristics mentioned in claims 7 to 14.

L'invention est décrite ci-dessous en regard du dessin annexé comportant les figures où:

  • la figure 1 représente une vue de face d'une première forme d'exécution d'un dispositif selon l'invention en position d'attente,
  • la figure 2 représente une vue de côté du même dispositif selon la même position,
  • la figure 3 est une vue semblable à celle de la figure 1 avec le dispositif en fonctionnement,
  • la figure 4 est une vue semblable à celle de la figure 2 avec le dispositif en fonctionnement,
  • la figure 5 représente une vue de face d'une deuxième forme d'exécution d'un dispositif selon l'invention en position d'attente,
  • la figure 6 représente une vue de côté du même dispositif selon la même position,
  • la figure 7 est une vue semblable à celle de la figure 5 avec le dispositif en fonctionnement, et
  • la figure 8 est une vue semblable à celle de la figure 6 avec le dispositif en fonctionnement.
The invention is described below with reference to the appended drawing comprising the figures where:
  • FIG. 1 represents a front view of a first embodiment of a device according to the invention in the waiting position,
  • FIG. 2 represents a side view of the same device according to the same position,
  • FIG. 3 is a view similar to that of FIG. 1 with the device in operation,
  • FIG. 4 is a view similar to that of FIG. 2 with the device in operation,
  • FIG. 5 represents a front view of a second embodiment of a device according to the invention in the waiting position,
  • FIG. 6 represents a side view of the same device according to the same position,
  • FIG. 7 is a view similar to that of FIG. 5 with the device in operation, and
  • Figure 8 is a view similar to that of Figure 6 with the device in operation.

La figure 1 montre un dispositif de préparation de coupe 1 disposé au-dessus d'une bobine 2 fixée à un axe support (non représenté) et comportant une pluralité de spires 20 dont en particulier une spire supérieure 21 dont l'extrémité avant est collée sur la spire qui lui est directement inférieure afin de fermer la bobine. La bobine 2 peut encore être définie par ses deux surfaces latérales formant ses deux flancs parallèles 22.Figure 1 shows a cutting preparation device 1 disposed above a coil 2 fixed to a support axis (not shown) and comprising a plurality of turns 20 including in particular an upper turn 21 whose front end is glued on the turn which is directly below it in order to close the coil. The coil 2 can also be defined by its two lateral surfaces forming its two parallel sides 22.

Durant tout le processus décrit ci-dessous, la bobine 2 est immobile sur son axe support, sans qu'il soit nécessaire qu'elle soit bloquée sur ledit axe. Le dispositif 1 comprend tout d'abord un premier actuateur 10, par exemple un vérin hydraulique ou pneumatique dont le cylindre extérieur est fixé à un bâti de machine 3 par des moyens connus 30.During the whole process described below, the coil 2 is stationary on its support axis, without it being necessary for it to be blocked on said axis. The device 1 firstly comprises a first actuator 10, for example a hydraulic or pneumatic cylinder, the outer cylinder of which is fixed to a machine frame 3 by known means 30.

Selon les cas, il est possible que les moyens 30 permettent un déplacement du dispositif 1 afin de l'amener au-dessus de la bobine 2 pour préparer son ouverture et escamoter ensuite ledit dispositif afin qu'il ne gêne pas les opérations ultérieures à effectuer sur la bobine. On peut considérer que durant le fonctionnement du dispositif de préparation 1 le corps extérieur de l'actuateur 10, respectivement le cylindre du vérin, est fixe et immobile par rapport à la bobine 2. L'actuateur 10 comprend une tige mobile 11, susceptible de se déplacer dans un sens ou dans l'autre, selon une direction perpendiculaire à l'axe support de la bobine et dirigée vers ledit axe support. L'extrémité de la tige mobile 11 du vérin 10 est fixée à un premier support 12 s'étendant parallèlement à l'axe support de la bobine, de préférence en arrière de la bobine 2, comme on le voit particulièrement sur la figure 2. Des moyens de guidage 12A empêchent la rotation du support 12 afin de conserver le support 12 toujours aligné avec l'axe support de la bobine. Sur l'extrémité arrière du support 12, une colonnette 12B maintient un support de lame 13 à une distance verticale déterminée et fixe par rapport au support 12. Une lame plate 13A peut coulisser à l'intérieur du support de lame 13, selon une direction parallèle à l'axe support de la bobine 2, passant d'une position rétractée comme on le voit sur la figure 2 à une position avancée en direction de la bobine 2, comme on le voit à la figure 4. Le mouvement d'avance ou de retrait de la lame plate 13A est obtenu par un deuxième actuateur de mouvement 13B, pneumatique ou hydraulique inclus dans le support de lame 13. Un deuxième support 14, orienté de manière générale selon une direction perpendiculaire à l'axe support de la bobine 2 ainsi qu'à la direction de déplacement de la tige mobile 11, est fixé au-dessous du support 12. Un double jeu de croisillons 15 constitué chacun d'une paire de barres 15A et 15B est disposé sur chacun des côtés du support 14 parallèles aux flancs de la bobine 2 et au-dessous dudit support. Un premier axe central 16 relie chacun des croisillons 15 par une position de préférence centrale de chacune des barres 15A et 15B, permettant auxdites barres de pivoter autour dudit premier axe central. L'extrémité supérieure de chacune des barres 15A est fixée, chacune sur une face opposée du support 14, au moyen d'un deuxième axe 16A, traversant ledit support et permettant auxdites barres de pivoter simultanément autour dudit deuxième axe. Les extrémités supérieures des barre 15B sont reliées de même par un troisième axe 16B, ledit axe étant coulissant selon une direction perpendiculaire à l'axe de la bobine 2 ainsi qu'à la direction de déplacement de la première tige mobile 11, dans une forure 14A traversante et s'étendant en direction du deuxième axe 16A, du support 14. L'extrémité du support 14 distale de celle fixée au support 12 supporte un troisième actuateur 17, pouvant lui aussi être un vérin pneumatique ou hydraulique, comportant une deuxième tige mobile 17A, fixée par son extrémité à l'axe 16B et apte à déplacer parallèlement à lui-même ledit axe dans la forure 14A, selon la direction définie précédemment. Les extrémités inférieures de chacune des barres 15A et de chacune des barres 15B sont reliées par deux quatrième axes 16C, lesdits axes n'étant pas pivotants par rapport aux barres 15A ou aux barres 15B. Les deux axes 16C supportent chacun une garniture de frottement 18 reliant entre elles et étant disposées au dessous des extrémités inférieures des deux barres 15A opposées, respectivement des deux barres 15B opposées. Les garnitures de frottement 18 sont donc parallèles à l'axe support de la bobine 2 et sont recouvertes chacune, sur leur face dirigée vers la bobine 2, d'un revêtement ayant un fort coefficient de friction par rapport au matériau constituant les spires 20 de la bobine, par exemple du caoutchouc. De préférence les surfaces de contact desdits revêtement sont arrondies, des striures longitudinales pouvant être prévues sur ces surfaces. De préférence, l'espacement entre les deux croisillons 15 opposés, respectivement la longueur des garnitures de frottement 18, est au moins égal à la largeur de la bande de matériau constituant la bobine 2.Depending on the case, it is possible that the means 30 allow the device 1 to move in order to bring it above the coil 2 to prepare its opening and then retract said device so that it does not interfere with the subsequent operations to be carried out. on the spool. It can be considered that during the operation of the preparation device 1 the external body of the actuator 10, respectively the cylinder of the jack, is fixed and immobile relative to the coil 2. The actuator 10 comprises a movable rod 11, capable of move in one direction or the other, in a direction perpendicular to the support axis of the coil and directed towards said support axis. The end of the movable rod 11 of the jack 10 is fixed to a first support 12 extending parallel to the support axis of the coil, preferably behind the coil 2, as can be seen particularly in FIG. 2. Guide means 12A prevent rotation of the support 12 in order to keep the support 12 always aligned with the support axis of the coil. On the rear end of the support 12, a baluster 12B maintains a blade support 13 at a determined vertical distance fixed to the support 12. A flat blade 13A can slide inside the blade support 13, in a direction parallel to the support axis of the coil 2, passing from a retracted position as seen in FIG. 2 to an advanced position in the direction of the coil 2, as seen in FIG. 4. The advance movement or removal of the flat blade 13A is obtained by a second motion actuator 13B, pneumatic or hydraulic included in the blade support 13. A second support 14, oriented generally in a direction perpendicular to the support axis of the coil 2 as well as to the direction of movement of the movable rod 11, is fixed below the support 12. A double set of braces 15 each consisting of a pair bars 15A and 15B is arranged on each of the sides of the support 14 parallel to the sides of the coil 2 and below said support. A first central axis 16 connects each of the crosspieces 15 by a preferably central position of each of the bars 15A and 15B, allowing said bars to pivot around said first central axis. The upper end of each of the bars 15A is fixed, each on an opposite face of the support 14, by means of a second axis 16A, passing through said support and allowing said bars to pivot simultaneously around said second axis. The upper ends of the bars 15B are likewise connected by a third axis 16B, said axis being sliding in a direction perpendicular to the axis of the coil 2 as well as to the direction of movement of the first movable rod 11, in a borehole 14A through and extending in the direction of the second axis 16A, of the support 14. The end of the support 14 distal from that fixed to the support 12 supports a third actuator 17, which can also be a pneumatic or hydraulic cylinder, comprising a second rod mobile 17A, fixed at its end to the axis 16B and able to move said axis parallel to itself in the bore 14A, in the direction defined above. The lower ends of each of the bars 15A and of each of the bars 15B are connected by two fourth axes 16C, said axes not being pivotable relative to the bars 15A or to the bars 15B. The two axes 16C each support a friction lining 18 connecting together and being arranged below the lower ends of the two opposite bars 15A, respectively of the two opposite bars 15B. The friction linings 18 are therefore parallel to the support axis of the coil 2 and are each covered, on their face facing the coil 2, with a coating having a high coefficient of friction with respect to the material constituting the turns 20 of the coil, for example rubber. Preferably the contact surfaces of said coatings are rounded, longitudinal ridges can be provided on these surfaces. Preferably, the spacing between the two opposite cross-pieces 15, respectively the length of the friction linings 18, is at least equal to the width of the strip of material constituting the coil 2.

Dans la position représentée à la figure 1, la tige mobile 17A de l'actuateur 17 est en position rétractée, respectivement l'axe 16B est en position éloignée de l'axe 16A. En activant l'actuateur 17 de manière à rapprocher l'axe 16B de l'axe 16A, on obtient par un effet de ciseau des croisillons 15 un rapprochement des extrémités inférieures des barres 15A et 15B de chaque croisillon, respectivement un rapprochement des deux garnitures de frottement 18. Par le même effet de ciseau, les deux garnitures de frottement 18 s'abaissent légèrement en direction de la bobine 2. Durant le même mouvement, vu que chacune des barres 15A pivote autour de l'axe 16A, alors que chacune des barres 15B pivote en sens inverse autour de l'axe 16B, les extrémités de chacune des barres, respectivement les surfaces de contact des garnitures 18 pivotent légèrement l'une contre l'autre.In the position shown in Figure 1, the movable rod 17A of the actuator 17 is in the retracted position, respectively the axis 16B is in a position remote from the axis 16A. By activating the actuator 17 so as to bring the axis 16B closer to the axis 16A, one obtains by a chisel effect of the braces 15 a bringing together of the lower ends of the bars 15A and 15B of each brace, respectively a bringing together of the two fittings of friction 18. By the same scissor effect, the two friction linings 18 lower slightly towards the coil 2. During the same movement, since each of the bars 15A pivots around the axis 16A, while each bars 15B pivots in the opposite direction around the axis 16B, the ends of each of the bars, respectively the contact surfaces of the linings 18 pivot slightly against one another.

On remarque en outre sur la figure 2 un dispositif de coupe 4, comportant en particulier une lame de coupe 40 et qui est disposé en position d'attente.Note also in Figure 2 a cutting device 4, in particular comprising a cutting blade 40 and which is arranged in the standby position.

Il est possible maintenant de décrire les différentes étapes du procédé de préparation de la coupe de la spire supérieure 21 de la bobine 2. Comme mentionné précédemment, la bobine 2 est immobile sur son axe support. En se référant aux figures 1 et 2, on voit que les moyens 30, permettant d'amener le dispositif de préparation 1 sont actionnés afin de positionner ledit dispositif à proximité de la spire supérieure 21, les deux garnitures de frottement 18 légèrement au-dessus de la spire 21, étant parallèles à l'axe de la bobine et n'étant pas en contact avec la spire 21 alors que la lame 13A est positionnée quelques dixièmes de mm en dessous de la surface supérieure de la spire supérieure 21. La distance par rapport à ladite surface supérieure àlaquelle la lame plate 13A est disposée dépend essentiellement de l'épaisseur de la bande de matériau constituant la spire supérieure 21. Dans cette position, l'actuateur 10 maintient la tige mobile 11 en position rétractée, alors que l'actuateur 13B maintient la lame plate 13A en position rétractée et que l'actuateur 17 maintient l'axe 16B en position éloignée de l'axe 16A. La détermination de cette position de départ du dispositif 1 par rapport à la bobine 2 peut être faite manuellement ou automatiquement au moyen d'un dispositif détecteur de position (non représenté, mais pouvant être du même type que celui décrit plus bas en regard de la deuxième forme d'exécution du dispositif) couplé à une unité de commande 9, capable de déterminer que le dispositif est positionné correctement au-dessus de la spire 21 et que la lame plate 13A est positionnée correctement par rapport à ladite spire.It is now possible to describe the different stages of the process for preparing the cut of the upper turn 21 of the coil 2. As mentioned previously, the coil 2 is stationary on its support axis. Referring to Figures 1 and 2, we see that the means 30, for bringing the preparation device 1 are actuated to position said device near the upper turn 21, the two friction linings 18 slightly above of the coil 21, being parallel to the axis of the coil and not being in contact with the coil 21 while the blade 13A is positioned a few tenths of a mm below the upper surface of the upper coil 21. The distance relative to said upper surface to which the flat blade 13A is disposed essentially depends on the thickness of the strip of material constituting the upper turn 21. In this position, the actuator 10 maintains the movable rod 11 in the retracted position, while the actuator 13B maintains the flat blade 13A in the retracted position and the actuator 17 maintains the axis 16B in a position remote from the axis 16A. The determination of this starting position of the device 1 relative to the coil 2 can be done manually or automatically by means of a position detector device (not shown, but can be of the same type as that described more bottom next to the second embodiment of the device) coupled to a control unit 9, capable of determining that the device is positioned correctly above the turn 21 and that the flat blade 13A is positioned correctly with respect to said turn.

Dès cette position de départ atteinte, on actionne l'actuateur 17, qui rapproche l'axe 16B de l'axe 16A provoquant les mouvements décrits précédemment, soit une descente des surfaces de contact des garnitures de frottement 18 au contact et en appui sur la spire 21, et un rapprochement des deux dites garnitures accompagnées de leur mouvement de pivotement. Ces mouvements des deux garnitures 18 ont suffi, dès que celles-ci sont entrées en contact avec la spire supérieure 21, à la pincer légèrement puis à la soulever et créer une arche 21A entre les deux garnitures 18, comme on le voit à la figure 3. Cette arche 21A sur la spire 21 est donc provoquée par la combinaison des mouvements décrits, tout d'abord un fort contact entre les garnitures 18 et deux surfaces distantes de la spire 21, puis par le rapprochement et le pivotement des deux garnitures qui, vu le fort coefficient de friction de leur revêtement, ne glissent pas sur la spire 21. Lorsque l'arche 21A est créée, l'actuateur 17 est arrêté, alors que l'actuateur 13B est activé afin d'avancer la lame plate 13A de manière à ce que son extrémité passe dans l'espace compris sous l'arche 21A, soit entre la spire supérieure 21 et les spires des couches inférieures 20. A ce moment la lame plate 13A est maintenue dans cette position et le dispositif de coupe 4, respectivement la lame de coupe 40, est amené entre les barres du croisillon 15, directement au-dessus de l'arche 21. Les moyens par lesquels la lame 40 est actionnée ne font pas partie du dispositif de préparation selon l'invention, mais de l'un des dispositifs de coupe décrits dans l'un des brevets mentionnés en introduction. La lame 40 peut ainsi couper l'arche 21A, respectivement la spire supérieure 21 en ne s'enfonçant que jusqu'à la lame plate 13A contre laquelle elle vient finalement en butée. Ainsi, la lame plate 13A a protégé la première des spires des couches inférieures 20 qui ne peut donc pas être entamée par la lame 40. De préférence l'extrémité de la lame plate 13A pénétrant entre deux spires de la bobine 2 est de forme arrondie afin de ne pas blesser les spires. Dès que cette opération de coupe est faite, la lame de coupe 40 est retirée, puis la lame plate 13A par l'actuateur 13B, puis l'actuateur 10 est à nouveau actionné afin de séparer les garnitures 18 de la spire 21 et les moyens 30 éloignent le dispositif 1 de la bobine 2. Les moyens par lesquels l'extrémité supérieure de la spire 21 est saisie afin d'être amenée vers la machine de fabrication ne sont pas non plus décrits ici vu qu'ils le sont dans les brevets cités plus haut. Pour la clarté de l'exposé, il a été dit que la coupe ne s'effectuait que sur la spire supérieure 21, en fait l'arche 21A est formée de plusieurs des spires supérieures de la bobine, avec éventuellement la bande de protection mentionnée précédemment, faisant donc que plusieurs spires sont ensuite coupées. Ceci est plutôt un avantage dans la mesure où, si au moins deux spires sont coupées, on est sûr de ne pas retrouver dans la bande utilisable, l'endroit où l'extrémité de la spire supérieure a été collé sur la spire qui lui est directement inférieure. Les différents mouvements des actuateurs sont commandés par l'unité de commande 9.As soon as this starting position is reached, the actuator 17 is actuated, which brings the axis 16B closer to the axis 16A causing the movements described above, ie a descent of the contact surfaces of the friction linings 18 in contact and pressing on the turn 21, and a bringing together of the two said linings accompanied by their pivoting movement. These movements of the two linings 18 were sufficient, as soon as they came into contact with the upper coil 21, to pinch it slightly and then to lift it and create an arch 21A between the two linings 18, as seen in the figure 3. This arch 21A on the coil 21 is therefore caused by the combination of the movements described, firstly a strong contact between the linings 18 and two distant surfaces of the coil 21, then by the bringing together and pivoting of the two linings which , given the high coefficient of friction of their coating, do not slip on the coil 21. When the arch 21A is created, the actuator 17 is stopped, while the actuator 13B is activated in order to advance the flat blade 13A so that its end passes into the space included under the arch 21A, ie between the upper turn 21 and the turns of the lower layers 20. At this time the flat blade 13A is held in this position and the cutting device 4, respect ively the cutting blade 40, is brought between the bars of the spider 15, directly above the arch 21. The means by which the blade 40 is actuated are not part of the preparation device according to the invention, but of one of the cutting devices described in one of the patents mentioned in the introduction. The blade 40 can thus cut the arch 21A, respectively the upper turn 21 by sinking only as far as the flat blade 13A against which it finally comes into abutment. Thus, the flat blade 13A has protected the first of the turns of the lower layers 20 which therefore cannot be started by the blade 40. Preferably the end of the flat blade 13A penetrating between two turns of the coil 2 is of rounded shape so as not to hurt the turns. As soon as this cutting operation is done, the cutting blade 40 is removed, then the flat blade 13A by the actuator 13B, then the actuator 10 is again actuated in order to separate the linings 18 from the coil 21 and the means 30 move the device 1 away from the coil 2. The means by which the upper end of the coil 21 is gripped in order to be brought to the manufacturing machine are also not described here since they are in the patents cited above. For the sake of clarity, it has been said that the cutting is only carried out on the upper turn 21, in fact the arch 21A is formed by several of the upper turns of the coil, possibly with the protective strip mentioned previously, so that several turns are then cut. This is rather an advantage insofar as, if at least two turns are cut, one is sure not to find in the usable band, the place where the end of the upper turn was glued on the turn which is directly lower. The different movements of the actuators are controlled by the control unit 9.

Le dispositif de préparation d'ouverture d'une bobine a été décrit ci-dessus selon une forme d'exécution préférentielle, il est évident que des variantes de cette forme d'exécution peuvent être prévues; en particulier il n'est pas du tout nécessaire que le dispositif 1 soit placé au-dessus de la bobine 2 selon une position verticale, en fait il pourrait être orienté selon n'importe quel angle par rapport au centre de la bobine, à condition que les angles relatifs des divers mouvements décrits soient conservés. De même les actionneurs décrits comme étant des vérins pneumatiques ou hydrauliques pourraient être constitués de n'importe quel élément susceptible de produire les mouvements décrits. Une autre forme d'exécution des moyens permettant de rapprocher les deux axes 16A et 16B pourrait aussi être prévue, par exemple une tige possédant deux sections filetées selon des directions inverses, mise en rotation par l'actionneur 17, chacune des sections filetées passant par un trou taraudé de l'axe 16A, respectivement de l'axe 16B. On aurait ainsi un rapprochement simultané des deux axes plutôt qu'un déplacement d'un seul axe. De même l'axe central 16 a été décrit comme étant disposé selon une position centrale de chacune des barres 15A et 15B; en fait il pourrait être décalé de manière à avoir un mouvement des garnitures 18 multiplié ou divisé par rapport au mouvement de rapprochement des deux axes 16A et 16B. Il est aussi possible de prévoir que le support 14 supportant les croisillons 15 et les garnitures de frottement 18 soit indépendant du support 12 supportant la lame 13A, de manière à pouvoir être éloigné de la bobine 2 après que la lame 13A ait été enfoncée dans la bobine afin de laisser, si nécessaire, une place suffisante au dispositif de coupe 4.The device for preparing the opening of a reel has been described above according to a preferred embodiment, it is obvious that variants of this embodiment can be provided; in particular it is not at all necessary that the device 1 be placed above the coil 2 in a vertical position, in fact it could be oriented at any angle relative to the center of the coil, provided that the relative angles of the various movements described are preserved. Similarly, the actuators described as being pneumatic or hydraulic cylinders could be made up of any element capable of producing the movements described. Another embodiment of the means making it possible to bring the two axes 16A and 16B closer together could also be provided, for example a rod having two threaded sections in opposite directions, rotated by the actuator 17, each of the threaded sections passing through a threaded hole of the axis 16A, respectively of the axis 16B. We would thus have a simultaneous approach of the two axes rather than a displacement of a single axis. Similarly, the central axis 16 has been described as being arranged in a central position of each of the bars 15A and 15B; in fact it could be shifted so as to have a movement of the linings 18 multiplied or divided with respect to the movement of approximation of the two axes 16A and 16B. It is also possible to provide that the support 14 supporting the crossbars 15 and the friction linings 18 is independent of the support 12 supporting the blade 13A, so that it can be moved away from the coil 2 after the blade 13A has been inserted in the spool in order to leave, if necessary, sufficient space for the cutting device 4.

Un autre forme d'exécution d'un dispositif de préparation d'ouverture d'une bobine est représentée aux figures 5 à 8.Another embodiment of a device for preparing the opening of a reel is shown in FIGS. 5 to 8.

Comme précédemment, une bobine 2 comportant une pluralité de spires 20 et en particulier une spire supérieure 21 est fixée sur un axe support non représenté. Le dispositif de préparation est ici composé d'un dispositif porte lame 5, d'un dispositif de détection de position 6 et d'une unité de commande 9; il peut être complété d'un dispositif de soufflage 7. Ces différents éléments sont représentés séparés les uns des autres afin de rendre les figures plus claires, mais il est évident qu'ils font partie du même ensemble et sont reliés à une platine commune comportant des moyens de déplacement aptes à amener lesdits éléments en position d'action proche de la bobine 2. Le dispositif porte lame 5 comprend une lame plate 50, absolument semblable à la lame plate 13A décrite plus haut, et pouvant comme elle prendre une position rétractée, comme sur la figure 6, ou une position avancée, comme sur la figure 8, sous l'effet d'un actionneur 51. Le porte lame 5 est monté sur un autre actionneur 52 apte à positionner très précisément la lame plate 50 par rapport à la spire supérieure 21 de la bobine 2 comme on le verra plus bas. Vu que les bobines à ouvrir peuvent ne pas toutes avoir le même diamètre, il est nécessaire de détecter la position de la spire supérieure 21. Pour ceci, il est prévu un dispositif de détection de position 6 de ladite spire supérieure, constitué d'un autre actionneur 60 équipé d'un élément de touche 61, de préférence une roulette, qui, positionné premièrement nettement au-dessus de la spire supérieure 21, comme représenté à la figure 5, abaisse ensuite le doigt de touche 61 jusqu'à ce qu'il entre en contact avec la spire supérieure 21, comme on le voit à la figure 7. Cette position est relevée par l'unité de commande 9 qui peut alors activer l'actionneur 52 afin de placer la lame plate 50 quelques dixièmes de mm en dessous de la cote correspondant à la surface supérieure de la spire supérieure 21. La distance par rapport à ladite surface supérieure à laquelle la lame plate 50 est disposée dépend essentiellement de l'épaisseur de la bande de matériau constituant la bobine 2. Tenant compte du fait que les spires de la bobine 2 ne sont pas trop serrées, la lame 50 est doucement introduite sous la spire supérieure 21, de préférence pour la raison indiquée précédemment en regard de la première forme d'exécution, sous au moins deux des spires supérieures. Ce mouvement d'avance de la lame plate 50 peut être effectué alors que la bobine 2 est immobile ou alors lorsque celle-ci est animée d'un lent mouvement de rotation dans la direction allant de la roulette 61 vers la lame plate 50. De préférence la direction de ce mouvement de rotation est opposée à celle du déroulement normal de la bobine afin que, durant ce mouvement de rotation, la lame plate 50 tende à être repoussée vers le haut de par l'enroulement en spirale des spires de la bobine. Durant ce mouvement de rotation, la roulette 61 peut continuer de détecter la position de la couche supérieure 21 afin de corriger la position de la lame plate 50 dans le cas où la bobine 2 n'est pas exactement circulaire. Dès que la lame plate 50 est complètement enfoncée, la bobine est stoppée au cas où elle aurait été mise en rotation et, comme pour la première forme d'exécution décrite, un dispositif de coupe 4 est approché afin de couper les spires disposées au-dessus de la lame plate 50, en ne coupant que celles-ci, le mouvement de coupe étant limité par la lame plate 50. Comme représenté à la figure 6, le dispositif de préparation peut être complété par un dispositif de soufflage 7, composé essentiellement d'une buse de soufflage 70, qui projette un jet d'air sous pression directement au-dessus de la lame plate 50, en direction de la bobine 2, afin d'aider à soulever les spires supérieures, facilitant ainsi la pénétration de la lame plate 50. Les moyens de détection 6 peuvent aussi être conçus de manière à ne pas entrer en contact avec la spire supérieure 21, par exemple être constitués de moyens de détection optiques.As before, a coil 2 comprising a plurality of turns 20 and in particular an upper turn 21 is fixed on a support axis not shown. The preparation device here consists of a blade holder device 5, a position detection device 6 and a control unit 9; it can be completed with a blowing device 7. These different elements are shown separated from each other in order to make the figures clearer, but it is obvious that they are part of the same assembly and are connected to a common plate comprising displacement means capable of bringing said elements into an action position close to the spool 2. The blade-holding device 5 comprises a flat blade 50, absolutely similar to the flat blade 13A described above, and being able, like it, to assume a retracted position , as in FIG. 6, or an advanced position, as in FIG. 8, under the effect of an actuator 51. The blade holder 5 is mounted on another actuator 52 capable of very precisely positioning the flat blade 50 relative to at the upper turn 21 of the coil 2 as will be seen below. Since the coils to be opened may not all have the same diameter, it is necessary to detect the position of the upper turn 21. For this, a position detection device 6 of said upper turn is provided, consisting of a another actuator 60 equipped with a touch element 61, preferably a caster, which, positioned first clearly above the upper turn 21, as shown in FIG. 5, then lowers the touch finger 61 until 'it comes into contact with the upper turn 21, as seen in Figure 7. This position is raised by the control unit 9 which can then activate the actuator 52 in order to place the flat blade 50 a few tenths of mm below the dimension corresponding to the upper surface of the upper turn 21. The distance from said upper surface on which the flat blade 50 is disposed depends essentially on the thickness of the strip of material. u constituting the coil 2. Taking into account that the turns of the coil 2 are not too tight, the blade 50 is gently introduced under the upper turn 21, preferably for the reason indicated above with regard to the first embodiment, under at least two of the upper turns. This advance movement of the flat blade 50 can be carried out while the coil 2 is stationary or when the latter is driven by a slow rotational movement in the direction going from the caster 61 towards the flat blade 50. preferably the direction of this rotational movement is opposite to that of the normal unwinding of the reel so that, during this rotational movement, the flat blade 50 tends to be pushed upward by the spiral winding of the turns of the reel . During this rotational movement, the roller 61 can continue to detect the position of the upper layer 21 in order to correct the position of the flat blade 50 in the case where the coil 2 is not exactly circular. As soon as the flat blade 50 is fully depressed, the spool is stopped in the event that it has been rotated and, as for the first embodiment described, a cutting device 4 is approached in order to cut the turns arranged at- above the flat blade 50, cutting only these, the cutting movement being limited by the flat blade 50. As shown in FIG. 6, the preparation device can be supplemented by a blowing device 7, essentially composed a blowing nozzle 70, which projects a jet of pressurized air directly above the flat blade 50, in the direction of the coil 2, in order to help lift the upper turns, thus facilitating the penetration of the flat blade 50. The detection means 6 can also be designed so as not to come into contact with the upper turn 21, for example consist of optical detection means.

Un dispositif de préparation, selon l'une ou l'autre des formes d'exécution ou des variantes décrites plus haut, permet, en coopération avec un dispositif de coupe et de saisie des spires supérieures d'une bobine, d'obtenir une bande de matériau intacte pour un usage ultérieur, ladite bande n'ayant pu être endommagée par le dispositif de coupe.A preparation device, according to one or other of the embodiments or variants described above, makes it possible, in cooperation with a device for cutting and gripping the upper turns of a coil, to obtain a strip intact material for later use, said strip could not have been damaged by the cutting device.

Claims (14)

Procédé de préparation de l'ouverture d'une bobine (2) constituée d'une bande d'un matériau souple enroulée en spires superposées (20) et comportant une spire supérieure (21) dont l'extrémité libre est fixée sur la spire qui lui est directement inférieure, ladite bobine étant disposée sur un axe support et comportant deux flancs parallèles (22), caractérisé en ce qu'une lame plate (13A;50) est introduite entre deux spires successives (20,21) par le flanc (22) de la bobine, au moins une spire (21) étant disposée par dessus la lame plate.Method for preparing the opening of a coil (2) consisting of a strip of flexible material wound in superimposed turns (20) and comprising an upper turn (21) whose free end is fixed to the turn which it is directly lower, said coil being disposed on a support axis and comprising two parallel flanks (22), characterized in that a flat blade (13A; 50) is introduced between two successive turns (20,21) by the flank ( 22) of the coil, at least one turn (21) being arranged over the flat blade. Procédé selon la revendication 1, caractérisé en ce que deux garnitures de frottement (18) constituées de deux éléments allongés, parallèles et disposés parallèlement à l'axe support de la bobine (2) sont appliquées simultanément avec une certaine pression sur deux portions de surface de la spire supérieure (21), les deux garnitures de frottement (18) étant ensuite légèrement rapprochées l'une de l'autre, de manière à chacune entraîner la portion de surface sur laquelle elle est appuyée, afin de former une arche (21A) constituée d'une portion d'au moins la spire supérieure (21), la lame plate (13A) étant ensuite introduite sous ladite arche (21A).Method according to Claim 1, characterized in that two friction linings (18) consisting of two elongated elements, parallel and arranged parallel to the support axis of the coil (2) are applied simultaneously with a certain pressure on two surface portions of the upper turn (21), the two friction linings (18) then being slightly brought together, so as to each drive the surface portion on which it is supported, in order to form an arch (21A ) consisting of a portion of at least the upper turn (21), the flat blade (13A) then being introduced under said arch (21A). Procédé selon la revendication 2, caractérisé en ce que chacune des deux garnitures de frottement (18) est en outre animée d'un mouvement de rotation autour d'un axe (16A, 16B) parallèle à l'axe de la bobine (2), chacun des deux dits mouvements de rotation étant de sens opposé et tendant à la création de ladite arche (21A).Method according to claim 2, characterized in that each of the two friction linings (18) is also driven in a rotational movement about an axis (16A, 16B) parallel to the axis of the coil (2) , each of the two said rotational movements being in the opposite direction and tending to the creation of said arch (21A). Procédé selon la revendication 1, caractérisé en ce que des moyens de soufflage (7) d'un jet d'air sont prévus afin de soulever au moins la spire supérieure (21) lors de l'introduction de la lame plate (50).Method according to claim 1, characterized in that means for blowing (7) an air jet are provided in order to raise at least the upper turn (21) during the introduction of the flat blade (50). Procédé selon la revendication 4, caractérisé en ce que la bobine (2) est animée d'un mouvement de rotation à vitesse réduite lors de l'introduction de la lame plate (50).Method according to claim 4, characterized in that the coil (2) is rotated at reduced speed when the flat blade (50) is introduced. Procédé selon l'une des revendications précédentes, caractérisé en ce que après introduction de la lame plate (13A;50), l'ouverture de la bobine peut être commandée en actionnant un dispositif de coupe (4) comportant une lame de coupe (40) pour une opération de coupe, sectionnant uniquement la ou les spires (21) disposées par dessus la lame plate (13A;50), ladite lame de coupe (40) venant en butée contre ladite lame plate (13A;50) après ladite opération de coupe.Method according to one of the preceding claims, characterized in that after the introduction of the flat blade (13A; 50), the opening of the spool can be controlled by actuating a cutting device (4) comprising a cutting blade (40 ) for a cutting operation, cutting only the turn (s) (21) arranged over the flat blade (13A; 50), said cutting blade (40) abutting against said flat blade (13A; 50) after said operation cutting. Dispositif pour la préparation de l'ouverture d'une bobine (2) constituée d'une bande d'un matériau souple enroulée en spires superposées (20) et comportant une spire supérieure (21) dont l'extrémité libre est fixée sur la spire qui lui est directement inférieure, ladite bobine (2) étant disposée sur un axe support et comportant deux flancs parallèles (22), caractérisé en ce qu'il comprend en particulier une lame plate (13A;50) montée sur un support de lame (13,5), ledit support de lame étant monté sur des moyens de déplacements (10;52) aptes à positionner la lame plate (13A;50) à une distance déterminée de la surface supérieure de la spire supérieure (21) et comportant d'autres moyens de déplacement (13B;51) aptes à faire avancer la lame plate (13A;50) entre deux spires successives (21,20) par la flanc (22) de la bobine.Device for preparing the opening of a coil (2) consisting of a strip of flexible material wound in superimposed turns (20) and comprising an upper turn (21) whose free end is fixed to the turn which is directly below it, said coil (2) being arranged on a support axis and comprising two parallel sides (22), characterized in that it comprises in particular a flat blade (13A; 50) mounted on a blade support ( 13,5), said blade support being mounted on displacement means (10; 52) capable of positioning the flat blade (13A; 50) at a determined distance from the upper surface of the upper turn (21) and comprising d 'other displacement means (13B; 51) capable of advancing the flat blade (13A; 50) between two successive turns (21,20) by the side (22) of the coil. Dispositif selon la revendication 7, caractérisé en ce qu'il comprend en outre deux garnitures de frottement (18) constituées de deux éléments allongés, parallèles et disposés parallèlement à l'axe support de la bobine, aptes à être appliquées simultanément avec une certaine pression sur deux portions de surface de la spire supérieure (21), les deux garnitures de frottement (18) étant aptes ensuite à être légèrement rapprochées l'une de l'autre, de manière à chacune entraîner la portion de surface sur laquelle elle est appuyée, afin de former une arche (21A) constituée d'une portion d'au moins la spire supérieure (21), la lame plate (13A) pouvant ensuite être introduite sous ladite arche (21A).Device according to claim 7, characterized in that it further comprises two friction linings (18) consisting of two elongated elements, parallel and arranged parallel to the support axis of the coil, capable of being applied simultaneously with a certain pressure on two surface portions of the upper turn (21), the two friction linings (18) then being able to be slightly brought together, so as to each drive the surface portion on which it is supported , in order to form an arch (21A) consisting of a portion of at least the upper turn (21), the flat blade (13A) can then be introduced under said arch (21A). Dispositif selon la revendication 8, caractérisé en ce qu'il comprend en outre deux croisillons (15) opposés disposés selon deux plans espacés parallèles aux flancs (22) de la bobine (2), chacun desdits croisillons (15) étant constitué d'une paire de barres (15A, 15B), les barres (15A, 15B) de chacun desdits croisillons (15) et les croisillons entre eux étant reliés par un axe central (16) de pivotement parallèle à l'axe support de la bobine (2) et passant par une position généralement centrale de chaque barre (15A, 15B), les extrémités inférieures de chacune des deux barres opposés des deux croisillons étant reliées par une garniture de frottement (18) parallèles entre elles et avec l'axe support de la bobine (2), les extrémités supérieures de chacune des deux barres opposés des deux croisillons (15) étant reliées par un axe supérieur (16A, 16B) parallèles entre eux et avec l'axe support de la bobine (2), au moins un desdits axes supérieurs (16B) pouvant être mû par des moyens de déplacement (17 ,17A) afin de rapprocher lesdits axes supérieurs (16A, 16B) selon une direction perpendiculaire à l'axe de la bobine (2) et au diamètre de la bobine passant par ledit axe central (16), le rapprochement desdits axes supérieurs (16A, 16B) provoquant, par un effet de ciseau de chacun des croisillons (15), un appui de chacune des garnitures de frottement (18) sur une portion de surface de la spire supérieure (21), un rapprochement et un pivotement selon des sens opposés de chacune des deux garnitures de frottement (18) afin de former une arche (21A) constituée d'une portion d'au moins la spire supérieure (21).Device according to claim 8, characterized in that it further comprises two opposite braces (15) arranged in two spaced planes parallel to the sides (22) of the coil (2), each of said braces (15) consisting of a pair of bars (15A, 15B), the bars (15A, 15B) of each said crosspieces (15) and the crosspieces between them being connected by a central pivot axis (16) parallel to the support axis of the coil (2) and passing through a generally central position of each bar (15A, 15B), the the lower ends of each of the two opposite bars of the two braces being connected by a friction lining (18) parallel to each other and with the support axis of the coil (2), the upper ends of each of the two opposite bars of the two braces ( 15) being connected by an upper axis (16A, 16B) parallel to each other and with the support axis of the coil (2), at least one of said upper axes (16B) being able to be moved by displacement means (17, 17A ) in order to bring said upper axes (16A, 16B) closer in a direction perpendicular to the axis of the coil (2) and to the diameter of the coil passing through said central axis (16), the approximation of said upper axes (16A, 16B ) causing, by an effect of chisel of each of the braces (15), a support of each of the friction linings (18) on a surface portion of the upper turn (21), a bringing together and a pivoting in opposite directions of each of the two friction linings (18) in order to form an arch (21A) consisting of a portion of at least the upper turn (21). Dispositif selon l'une des revendications 8 ou 9, caractérisé en ce que les garnitures de frottement (18) sont recouvertes d'un matériau ayant un fort coefficient de frottement par rapport au matériau constituant la spire supérieure (21).Device according to one of claims 8 or 9, characterized in that the friction linings (18) are covered with a material having a high coefficient of friction relative to the material constituting the upper turn (21). Dispositif selon l'une des revendications 7 à 10, caractérisé en ce qu'il comprend en outre des moyens de détection (6,61) de la position de la spire supérieure (21) ainsi que des moyens de commande (9) aptes à commander le déplacement de la lame plate (13A;50) en position pour pénétrer entre deux spires (20,21) de la bobine (2), en fonction de la position détectée de la spire supérieure (21).Device according to one of claims 7 to 10, characterized in that it further comprises means for detecting (6,61) the position of the upper turn (21) as well as control means (9) suitable for controlling the movement of the flat blade (13A; 50) in position to penetrate between two turns (20,21) of the coil (2), depending on the detected position of the upper turn (21). Dispositif selon la revendication 7, caractérisé en ce qu'il comprend en outre des moyens de projection (7,70) d'un jet d'air orienté en direction de la surface supérieure de la lame plate (50) ainsi que du flanc (22) de la bobine (2).Device according to claim 7, characterized in that it further comprises means for projecting (7,70) an air jet directed towards the upper surface of the flat blade (50) as well as the sidewall ( 22) of the coil (2). Dispositif selon l'une des revendications 7 ou 12, caractérisé en ce qu'il comprend en outre des moyens permettant de mettre la bobine (2) en rotation autour de son axe support, selon une faible vitesse.Device according to one of claims 7 or 12, characterized in that it further comprises means allowing the coil (2) to rotate around its support axis, at a low speed. Dispositif selon l'une des revendications 7 à 13 caractérisé en ce qu'il est associé à un dispositif de coupe et de saisie de l'extrémité coupée de la spire supérieure (21) comportant en particulier une lame de coupe (40) pouvant venir sectionner la ou les spires (21) disposées par dessus la lame plate (13A;50), ladite lame de coupe (40) venant en butée contre ladite lame plate (13A;50) après l'opération de coupe.Device according to one of Claims 7 to 13, characterized in that it is associated with a device for cutting and gripping the cut end of the upper turn (21) comprising in particular a cutting blade (40) which can come sectioning the turn (s) (21) arranged over the flat blade (13A; 50), said cutting blade (40) abutting against said flat blade (13A; 50) after the cutting operation.
EP94810716A 1994-12-12 1994-12-12 Method and device for preparing the opening of a reel Expired - Lifetime EP0721905B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE69430064T DE69430064T2 (en) 1994-12-12 1994-12-12 Method and device for preparing the opening of a web wrap
EP94810716A EP0721905B1 (en) 1994-12-12 1994-12-12 Method and device for preparing the opening of a reel
DE69522303T DE69522303T2 (en) 1994-12-12 1995-12-01 Method and device for preparing and opening a web roll
EP95810754A EP0716996B1 (en) 1994-12-12 1995-12-01 Method and device for preparing and opening of a reel
US08/570,278 US6227088B1 (en) 1994-12-12 1995-12-11 Apparatus for opening paper bobbins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94810716A EP0721905B1 (en) 1994-12-12 1994-12-12 Method and device for preparing the opening of a reel

Publications (2)

Publication Number Publication Date
EP0721905A1 true EP0721905A1 (en) 1996-07-17
EP0721905B1 EP0721905B1 (en) 2002-03-06

Family

ID=8218351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810716A Expired - Lifetime EP0721905B1 (en) 1994-12-12 1994-12-12 Method and device for preparing the opening of a reel

Country Status (3)

Country Link
US (1) US6227088B1 (en)
EP (1) EP0721905B1 (en)
DE (2) DE69430064T2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343423A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Device which is especially reel-spool storage station has winding reel producing rotational movement for rolling off of material roll, and winding reel and cutting device are movable in relation to one another in traversing direction
DE10343452A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Cutter unit removing strip from winding of e.g. fibrous paper web, includes frame with suction unit and spaced blades removing layer from wounddrum
EP1688379A2 (en) * 2005-02-05 2006-08-09 Voith Paper Patent GmbH Method and device for unwinding a material web from a material roll
WO2009044258A2 (en) * 2007-10-03 2009-04-09 Corima International S.R.L. Machine for cutting products paper wrapping, in particula of stacks of covers

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10242736A1 (en) * 2002-09-13 2004-03-18 Voith Turbo Gmbh & Co. Kg Hydrodynamic speed reduction system for motor vehicles, has a sliding rotator and variable gap to the stator and emptying of residual fluid
EP1400471A1 (en) * 2002-09-17 2004-03-24 Hauni Maschinenbau AG Method for opening bobbins and device for performing the method
DE10343451A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Assembly removes sample section of paper from a roll for feed between clamping track with cutter assembly
DE10343419A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Drum deposition station used in the manufacture of paper, cardboard, tissue or other fibrous material comprises a coiling drum having a coil core for coiling a material strip, and a cutting unit which is adjusted on the coiling drum
DE10343420A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Device which is especially reel-spool storage station has winding reel producing rotational movement for rolling off of material roll, and winding reel and cutting device are movable in relation to one another in traversing direction
DE10343454A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Winding drum for papermaking web, with unit sampling outer winding, is arranged for relative movement between sampling unit and drum
DE10343446A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Sampler removing one or more strips from wound drum of fibrous web in papermaking plant, is fitted under base flap beneath drum and pivots up for strip sampling
DE10343449A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Device and method for removing a strip from a roll of a fibrous web on a winding drum
US7779724B2 (en) * 2004-04-19 2010-08-24 Shimano Inc. Electrical bicycle shift control device
DE102004043102A1 (en) * 2004-09-07 2006-03-09 Man Roland Druckmaschinen Ag System and method for unpacking a printing paper roll
EP1810925A1 (en) * 2006-01-24 2007-07-25 Metso Paper AG Method of unpacking of a paper roll and device for carrying out said method
US20070227672A1 (en) * 2006-03-31 2007-10-04 Komori Corporation Apparatus for preparing roll of paper
US20070227673A1 (en) * 2006-03-31 2007-10-04 Komori Corporation Apparatus for preparing roll of paper
JP2007290859A (en) * 2006-03-31 2007-11-08 Komori Corp Web paper cutting device
US9637263B2 (en) * 2010-10-20 2017-05-02 Siemens Industry, Inc. Film-wrapped bundle opener
JP7008622B2 (en) * 2016-04-18 2022-01-25 株式会社瑞光 Method and device for cutting the epidermis of raw roll
JP6797191B2 (en) * 2016-04-18 2020-12-09 株式会社瑞光 Method and system for removing the epidermis of the raw fabric roll
JP7147547B2 (en) * 2018-12-25 2022-10-05 株式会社リコー Recording medium cutting device, liquid ejection device
EP3988484B1 (en) * 2020-10-21 2024-04-24 Fameccanica.Data S.p.A. A method and apparatus for preparing edges of reels of web material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215355A1 (en) * 1981-05-13 1982-12-02 Hauni-Werke Körber & Co KG, 2050 Hamburg Device for separating layers of paper
US4821971A (en) * 1988-03-17 1989-04-18 Kabushiki Kaisha Kaneda Kikai Seisakusho Device for peeling and cutting off surface portions of paper rolls
DE3918552A1 (en) * 1989-06-02 1990-12-06 Kaneda Kikai Seisakusho Toyona Splicer machine for rolls of paper - incorporates support and cutter with guide, waste strip remover and forming machine
WO1993013004A1 (en) * 1991-12-20 1993-07-08 Johansson, Arne Method and apparatus for removal of a roll wrapper
DE4212095C1 (en) * 1992-04-10 1993-08-19 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
EP0592845A1 (en) * 1992-10-16 1994-04-20 Von Roll Ag Method and apparatus for unpacking a paper roll

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1914528A (en) * 1929-12-31 1933-06-20 Dunlop Tire & Rubber Corp Cutting fork
US2747666A (en) * 1952-03-19 1956-05-29 Columbus Coated Fabrics Corp Slitting machine having two laterally movable outer knives and a center knife maintained midway between the outer knives
US3121300A (en) * 1962-02-01 1964-02-18 Francesco V Rossi Carton handling device
JPS5268594A (en) * 1975-12-05 1977-06-07 Toyo Seikan Kaisha Ltd Method and device for cutting open rattannlike package
DE3004952C2 (en) * 1980-02-09 1982-02-18 Schloemann-Siemag AG, 4000 Düsseldorf Device for separating crop ends or sample strips from metal tape wound into bundles
JPS5918975Y2 (en) * 1980-03-14 1984-06-01 大和製缶株式会社 Paper bag cutting device for cylindrical packaging
IT1150853B (en) 1981-05-13 1986-12-17 Hauni Werke Koerber & Co Kg DEVICE FOR SEPARATING PAPER LAYERS
US4437223A (en) * 1982-03-05 1984-03-20 Mesta Machine Company Apparatus for debanding coiled strip
JPS58203033A (en) * 1982-05-24 1983-11-26 Bridgestone Corp Unvalcanized rubber sheet cutter
IT1178613B (en) * 1983-11-24 1987-09-09 Hauni Werke Koerber & Co Kg REEL CHANGE DEVICE
DE3863761D1 (en) 1987-11-12 1991-08-22 Tabac Fab Reunies Sa METHOD AND MACHINE FOR JOINING PAPER STRIPS FOR THE CONTINUOUS FEEDING OF A MACHINE, ESPECIALLY FOR THE PRODUCTION OF CIGARETTES.
DE68901551D1 (en) 1988-02-25 1992-06-25 Tabac Fab Reunies Sa METHOD AND APPARATUS FOR OPENING A PAPER TAPE REEL.
US4984750A (en) * 1988-07-01 1991-01-15 Tokyo Automatic Machinery Works Ltd. Method and apparatus for replacing web-like material in a web-like material supplying device
EP0475886B1 (en) 1990-08-24 1994-11-09 Fabriques De Tabac Reunies S.A. Method and means for opening a paper roll and for splicing the end of a paper ribbon to the end of a second paper ribbon
DE4035919C2 (en) * 1990-11-12 1998-01-22 Weda Roland Werner Gmbh Trimming device for loops, in particular belt loops
US5467676A (en) * 1991-08-13 1995-11-21 Lamb-Grays Harbor Co. Automatic roll wrapper removing apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215355A1 (en) * 1981-05-13 1982-12-02 Hauni-Werke Körber & Co KG, 2050 Hamburg Device for separating layers of paper
US4821971A (en) * 1988-03-17 1989-04-18 Kabushiki Kaisha Kaneda Kikai Seisakusho Device for peeling and cutting off surface portions of paper rolls
DE3918552A1 (en) * 1989-06-02 1990-12-06 Kaneda Kikai Seisakusho Toyona Splicer machine for rolls of paper - incorporates support and cutter with guide, waste strip remover and forming machine
WO1993013004A1 (en) * 1991-12-20 1993-07-08 Johansson, Arne Method and apparatus for removal of a roll wrapper
DE4212095C1 (en) * 1992-04-10 1993-08-19 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
EP0592845A1 (en) * 1992-10-16 1994-04-20 Von Roll Ag Method and apparatus for unpacking a paper roll

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10343423A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Device which is especially reel-spool storage station has winding reel producing rotational movement for rolling off of material roll, and winding reel and cutting device are movable in relation to one another in traversing direction
DE10343452A1 (en) * 2003-09-19 2005-04-14 Voith Paper Patent Gmbh Cutter unit removing strip from winding of e.g. fibrous paper web, includes frame with suction unit and spaced blades removing layer from wounddrum
EP1688379A2 (en) * 2005-02-05 2006-08-09 Voith Paper Patent GmbH Method and device for unwinding a material web from a material roll
EP1688379A3 (en) * 2005-02-05 2007-08-01 Voith Patent GmbH Method and device for unwinding a material web from a material roll
WO2009044258A2 (en) * 2007-10-03 2009-04-09 Corima International S.R.L. Machine for cutting products paper wrapping, in particula of stacks of covers
WO2009044258A3 (en) * 2007-10-03 2009-08-13 Corima Internat S R L Machine for cutting products paper wrapping, in particula of stacks of covers

Also Published As

Publication number Publication date
DE69430064T2 (en) 2002-10-10
DE69522303D1 (en) 2001-09-27
DE69522303T2 (en) 2002-06-27
US6227088B1 (en) 2001-05-08
EP0721905B1 (en) 2002-03-06
DE69430064D1 (en) 2002-04-11

Similar Documents

Publication Publication Date Title
EP0721905B1 (en) Method and device for preparing the opening of a reel
EP0475886B1 (en) Method and means for opening a paper roll and for splicing the end of a paper ribbon to the end of a second paper ribbon
FR2613275A1 (en) METHOD AND APPARATUS FOR GLOWING PROTECTIVE FILM ON ONE SIDE OF A SERIES OF OPHTHALMIC LENSES
CH681538A5 (en)
EP0301989A1 (en) Web unwinding machine with reel-carrying towers
EP0331634B1 (en) Procedure and device for opening a paper web bobbin
EP0795504B1 (en) Continuous unwinder for bobbins with at least one means for simultaneously unwinding of two bobbins in twin or co-axial arrangement
FR2545752A1 (en) CUTTING DEVICE FOR CONTINUOUSLY CONTINUOUS CARDBOARD TUBES
EP2112106B1 (en) Method and device for cutting and gluing end-to-end for an unrolling machine
EP2465799A1 (en) Winding device
EP0662437B1 (en) Device for connecting tapes of flexible material
EP1577219B1 (en) Handle applicator
EP1075910A1 (en) Machine for cutting paper logs
EP0699610B1 (en) Device for cutting and gluelessly applying the web leading end for a new web roll onto the core of a winder
EP0716996A2 (en) Method and device for preparing and opening of a reel
EP0994062A1 (en) Apparatus for holding the free end and unloading a coil of an elongated element
EP0600770A1 (en) Unwinding device for flexible tube
EP2730527A1 (en) Unwinding device provided with a web lifting system
EP1328440A1 (en) Device for binding products, in particular stem products, using adhesive tape
EP1319623B1 (en) Method and device for knotting a thread on a bobbin
EP3417113B1 (en) Machine and method for installing vertical drains in the ground
EP0619255B1 (en) Device for cutting and attaching the leading end of a web of a new roll onto a core of a winder
EP0820930B1 (en) Machine for strapping rolls of web material
FR2497781A1 (en) METHOD FOR CHANGING COILS AND CHUCKS OF WINDING MACHINES WITHOUT AXIS
FR2880329A1 (en) Connection of flattened tubular sheaths in a machine of sleeves installation, comprises setting the sheath on the other sheath in isolated position of scrolling plane, solidifying the sheath and applying adhesive to the sheaths of the plan

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: A1

Designated state(s): CH DE FR GB IT LI

RBV Designated contracting states (corrected)

Designated state(s): CH DE FR GB IT LI

17P Request for examination filed

Effective date: 19960927

17Q First examination report despatched

Effective date: 19980630

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PHILIP MORRIS PRODUCTS S.A.

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

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

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69430064

Country of ref document: DE

Date of ref document: 20020411

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020516

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

Effective date: 20021209

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

Ref country code: FR

Payment date: 20051110

Year of fee payment: 12

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

Ref country code: GB

Payment date: 20051114

Year of fee payment: 12

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

Ref country code: DE

Payment date: 20051117

Year of fee payment: 12

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

Ref country code: CH

Payment date: 20051118

Year of fee payment: 12

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: 20061231

Ref country code: CH

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

Effective date: 20061231

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

Ref country code: IT

Payment date: 20061231

Year of fee payment: 13

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: 20070703

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20061212

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20070831

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

Ref country code: GB

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

Effective date: 20061212

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: 20070102

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

Effective date: 20071212