EP0721905B1 - Method and device for preparing the opening of a reel - Google Patents
Method and device for preparing the opening of a reel Download PDFInfo
- Publication number
- EP0721905B1 EP0721905B1 EP94810716A EP94810716A EP0721905B1 EP 0721905 B1 EP0721905 B1 EP 0721905B1 EP 94810716 A EP94810716 A EP 94810716A EP 94810716 A EP94810716 A EP 94810716A EP 0721905 B1 EP0721905 B1 EP 0721905B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reel
- flat blade
- turn
- blade
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/105—Opening of web rolls; Removing damaged outer layers; Detecting the leading end of a closed web roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/46—Splicing
- B65H2301/4604—Opening web rolls, remove outer layers
- B65H2301/46044—Opening web rolls, remove outer layers by cutting or perforating in tranverse direction
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S83/00—Cutting
- Y10S83/929—Particular nature of work or product
- Y10S83/949—Continuous or wound supply
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/343—With means to deform work temporarily
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/525—Operation controlled by detector means responsive to work
- Y10T83/538—Positioning of tool controlled
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/748—With work immobilizer
- Y10T83/7487—Means to clamp work
- Y10T83/7493—Combined with, peculiarly related to, other element
- Y10T83/75—With or to tool guide
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/748—With work immobilizer
- Y10T83/7487—Means to clamp work
- Y10T83/7493—Combined with, peculiarly related to, other element
- Y10T83/7513—Tool or tool support on movable clamp jaw
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/748—With work immobilizer
- Y10T83/7487—Means to clamp work
- Y10T83/7573—Including clamping face of specific structure
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8737—With tool positioning means synchronized with cutting stroke
- Y10T83/8739—Anvil moves into and out of operative position
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8745—Tool and anvil relatively positionable
- Y10T83/8746—Straight line
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8748—Tool displaceable to inactive position [e.g., for work loading]
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8821—With simple rectilinear reciprocating motion only
- Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]
Definitions
- the present invention relates to a method and a device for preparation of the opening of a reel made of a strip of material flexible wound in superimposed turns and having an upper turn the free end of which is fixed to the turn which is directly below it, said coil being arranged on a support axis and comprising two sides parallel.
- the method and the device according to the invention apply particularly good at relatively narrow coils, i.e. delivering a strip having a maximum width of the order of a few centimeters.
- the upper coil turn is covered with a protective strip, made of a material which may be different of that constituting the coil; by upper turn of the coil is meant in the following description, this possible protective strip as well as the or the first turns of the coil.
- the closest prior art to be considered is disclosed by the request DE-A-32.15.355.
- the device described comprises a support bar on which are mounted a cutting blade and a coil separation blade, the separation of the turns as well as the cut being controlled simultaneously by the movement of the support bar.
- This device includes many disadvantages: the planned construction does not allow to adjust the distance between the support bar and the separating blade, on the other hand it is quite difficult to minimize the height of the flange on which the blade is fixed separation, causing an excessive number of turns to be cut; on the other hand, it suffices that the spring effect of the separation blade is reduced, for example after long use, so that the tightening effect between the support bar and the separation blade is no longer guaranteed, so it is possible to have one or more turns of the strip between the separation blade and the support bar that is not properly sectioned; the support bar directly resting on the upper turns, these are compressed which does not facilitate the introduction of the separation blade; the simultaneity of movements in advance of the support bar pressing on the last turn, separation and cutting blade causes the turns to move cut as well as damage to the coil placed directly under the separation blade and does not allow a clean cut of the turns to be cut; the device described does not allow several passages of the knife and, given the fixing of the cutting blade. on the support bar, exchanging a worn cutting blade is difficult
- An object of the invention is therefore to propose a compatible method with known reel opening methods, not meeting the disadvantages of the means of the prior art and making it possible to ensure that the turn directly below the last cut turn is absolutely intact, even if the upper turns of the coil are wrapped fairly tightly.
- Another object of the invention is to propose a device for preparation of the opening of a coil which can be adapted on a device opening of a known coil and keeping the coil located intact directly below the last cut turn, even if the turns upper parts of the spool are wound fairly tightly.
- Figure 1 shows a cutting preparation device 1 arranged above a coil 2 fixed to a support pin (not shown) and comprising a plurality of turns 20 including in particular an upper turn 21 of which the front end is glued to the turn which is directly below it in order to close the coil.
- Coil 2 can still be defined by its two surfaces lateral forming its two parallel sides 22.
- the device 1 firstly comprises a first actuator 10, for example a hydraulic or pneumatic cylinder whose external cylinder is fixed to a machine frame 3 by known means 30.
- the means 30 allow movement of device 1 in order to bring it above coil 2 to prepare its opening and then retract said device so that it does not interfere the subsequent operations to be carried out on the spool.
- the external body of the actuator 10 respectively the cylinder of the jack, is fixed and immobile with respect to to the coil 2.
- the actuator 10 comprises a movable rod 11, capable of move in one direction or the other, in a perpendicular direction 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 coil support axis.
- a baluster 12B maintains a blade support 13 at a vertical distance determined and fixed relative to the support 12.
- a flat blade 13A can slide inside the blade support 13, in a direction parallel to the axis support of the coil 2, passing from a retracted position as seen on the Figure 2 at an advanced position towards the coil 2, as seen in Figure 4.
- the movement of advance or withdrawal 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 of bars 15A and 15B is arranged on each side of the support 14 parallel to the sides of coil 2 and below said support.
- a first central axis 16 connects each of the crosspieces 15 by a position preferably central 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 a second axis 16A, passing through said support and allowing said bars to pivot simultaneously around said second axis.
- the upper extremities 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 thus that in 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 movable rod 17A, fixed by its end to the axis 16B and able to move said axis parallel to itself in the bore 14A, according to the direction defined above.
- each bars 15A and each of the bars 15B are connected by two fourth axes 16C, said axes not being pivotable relative to bars 15A or to bars 15B.
- the two 16C axes each support a friction lining 18 interconnecting and being arranged below the lower ends two opposite bars 15A, respectively 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 side facing coil 2, a coating with 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, ridges longitudinal 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.
- 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 swivel slightly against each other.
- a cutting device 4 comprising in particular a cutting blade 40 which is arranged in position Wait.
- the coil 2 is stationary on its support axis.
- the means 30, allowing to bring the preparation device 1 are actuated in order to position said device near the upper turn 21, the two friction linings 18 slightly above 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 turn 21.
- the distance from said surface greater than which the flat blade 13A is arranged depends essentially on the thickness of the strip of material constituting the upper turn 21.
- 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 that the actuator 17 maintains the axis 16B in a position remote from the axis 16A.
- the determination from this starting position of the device 1 relative to the coil 2 can be done manually or automatically by means of a position (not shown, but may 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.
- actuator 17 is actuated, which brings the axis 16B closer to the axis 16A causing the movements described above, either a descent of the contact surfaces of the friction linings 18 in contact with and resting on the coil 21, and a bringing together of the two say fittings accompanied by their pivoting movement.
- These movements of the two linings 18 were sufficient, as soon as these entered contact with upper coil 21, pinch it slightly and then 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, first of all a strong contact between the linings 18 and two surfaces distant from the coil 21, then by the bringing together and the pivoting of the two linings which, given the high coefficient of friction of their coating, do not slide 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, i.e. between the upper turn 21 and the turns of the lower layers 20.
- the flat blade 13A is held in this position and the device cutting blade 4, respectively the cutting blade 40, is brought between the bars of the cross 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 from 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 to the blade plate 13A against which it finally comes into abutment. So the flat blade 13A has protected the first of the turns of the lower layers 20 which cannot therefore not be started by the blade 40.
- the end of the blade plate 13A penetrating between two turns of the coil 2 is of rounded shape so 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 turn 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 was carried out only on the upper turn 21, in fact the arch 21A is formed of several of the upper turns of the coil, possibly with the protective strip mentioned above, 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 not at all necessary that the device 1 be placed above the coil 2 in a vertical position, in fact it could be oriented in any angle to the center of the spool, provided that the relative angles of the various movements described are preserved. Likewise the actuators described as being pneumatic or hydraulic cylinders could be made 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 could also be provided, for example a rod having two sections threaded in opposite directions, rotated by the actuator 17, each of the threaded sections passing through a threaded hole of axis 16A, respectively axis 16B.
- the axis central 16 has been described as being disposed in a central position of each of the bars 15A and 15B; in fact it could be shifted so that have a movement of the linings 18 multiplied or divided with respect to the movement bringing together the two axes 16A and 16B.
- the support 14 supporting the cross-pieces 15 and the friction linings 18 is independent of the support 12 supporting the blade 13A, so able to be moved away from the coil 2 after the blade 13A has been inserted in the coil in order to leave sufficient space for the device, if necessary cutting 4.
- FIG. 5 Another embodiment of an opening preparation device of a coil is shown in Figures 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 is here composed of a device blade holder 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 to make the figures clearer, but it is obvious that they are part of the same whole and are connected to a common plate comprising displacement means suitable for bringing said elements into an action position close to coil 2.
- the device blade holder 5 includes a flat blade 50, absolutely similar to the blade plate 13A described above, and being able to take a retracted position, as in figure 6, or an advanced position, as in figure 8, under the effect of an actuator 51.
- the blade holder 5 is mounted on another actuator 52 able to very precisely position the flat blade 50 relative to the upper turn 21 of the coil 2 as will be seen below. Since the coils to open may not all have the same diameter, it is necessary to detect the position of the upper turn 21.
- a device is provided 6 position detection of said upper turn, consisting of another actuator 60 fitted with a touch element 61, preferably a roller, which, positioned first clearly above the upper turn 21, as shown in Figure 5, then lowers the finger 61 to what it comes into contact with the upper turn 21, as seen in the Figure 7. This position is noted 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 coil upper 21.
- the distance from said upper surface at which the flat blade 50 is arranged essentially depends on the thickness of the strip of material constituting the coil 2. Taking into account that the turns of the coil 2 are not too tight, the blade 50 is gently inserted under the upper turn 21, preferably for the reason indicated above in look of the first embodiment, under at least two of the upper turns.
- This advance movement of the flat blade 50 can then be carried out the coil 2 is stationary or when it is animated by a slow rotational movement in the direction from roller 61 towards the blade flat 50.
- the direction of this rotational movement is opposite to that of the normal unwinding of the reel so that, during this movement of rotation, the flat blade 50 tends to be pushed up by the winding in spiral of the coil turns.
- 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 not exactly circular.
- the spool is stopped in case it has been rotated and, as for the first embodiment described, a cutting device 4 is approached in order to cut the turns arranged above the flat blade 50, by not cutting only these, the cutting movement being limited by the flat blade 50.
- the preparation device can be completed by a blowing device 7, essentially consisting of 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 turns superior, thus facilitating the penetration of the flat blade 50.
- the means of detection 6 can also be designed so as not to come into contact with the upper turn 21, for example be made up of detection means optics.
- a preparation device allows, in cooperation with a device cutting and gripping the upper turns of a coil, obtaining a strip of intact material for later use, said strip having not been damaged by the cutting device.
Landscapes
- Replacement Of Web Rolls (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
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. Le procédé et le dispositif selon l'invention s'appliquent particulièrement bien à des bobines relativement étroites, c'est-à-dire délivrant une bande ayant une largeur maximum de l'ordre de quelques centimètres.The present invention relates to a method and a device for preparation of the opening of a reel made of a strip of material flexible wound in superimposed turns and having an upper turn the free end of which is fixed to the turn which is directly below it, said coil being arranged on a support axis and comprising two sides parallel. The method and the device according to the invention apply particularly good at relatively narrow coils, i.e. delivering a strip having a maximum width of the order of a few centimeters.
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 different processes and devices in which it is necessary to open a coil consisting in particular of a strip of paper or other material intended to feed a machine of manufacture, in particular the patents EP-A-0.318.427, EP-A-0.331.634 and EP-A-0475886. These patents generally provide that a blade cutting, arranged perpendicular to the direction of unwinding of the strip paper is applied to the upper coil of the coil in order to cut it. The cutting blade being supported on the upper coil with a certain force and / or sinking into the coil from a certain distance, usually several turns of the strip are cut simultaneously, without this number of turns can be controlled. Through these systems, it often happens that the turn 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 a stop of the machine where a loss of productivity. In some cases, the upper coil turn is covered with a protective strip, made of a material which may be different of that constituting the coil; by upper turn of the coil is meant in the following description, this possible protective strip as well as the or the first turns of the coil.
L'art antérieur le plus proche à considérer est divulgué par la demande DE-A-32.15.355. Le dispositif décrit comprend une barre support sur laquelle sont montées une lame de coupe et une lame de séparation de spires, la séparation des spires de même que la coupe étant commandées simultanément par le mouvement de la barre support. Ce dispositif comprend de nombreux inconvénients: la construction prévue ne permet pas de régler la distance entre la barre support et la lame de séparation, d'autre part il est assez difficile de minimiser la hauteur du réhaut sur lequel est fixée la lame de séparation, ceci faisant qu'un nombre excessif de spires doit être coupé; d'autre part, II suffit que l'effet de ressort de la lame de séparation soit diminué, par exemple après une longue utilisation, pour que l'effet de serrage entre la barre support et la lame de séparation ne soit plus garanti, ainsi il est possible d'avoir une ou plusieurs spires de la bande entre la lame de séparation et la barre support qui ne soient pas correctement sectionnées; la barre support s'appuyant directement sur les spires supérieures, celles-ci sont comprimées ce qui ne facilite pas l'introduction de la lame de séparation; la simultanéité des mouvements d'avance de la barre support en appui sur la dernière spire, de la lame de séparation et de la coupe entraíne un déplacement des spires à couper ainsi qu'un endommagement de la spire disposée directement sous la lame de séparation et ne permet pas une coupe franche des spires à couper; le dispositif décrit ne permet pas plusieurs passages du couteau et, vu la fixation de la lame de coupe.sur la barre support, l'échange d'une lame de coupe usée est difficile. Ce dispositif ne comporte en outre aucun moyen permettant de relâcher la tension des spires supérieures de la bobine au cas où lesdites spires sont enroulées de manière serrée, ce qui rend impossible dans ce cas l'utilisation du dispositif décrit.The closest prior art to be considered is disclosed by the request DE-A-32.15.355. The device described comprises a support bar on which are mounted a cutting blade and a coil separation blade, the separation of the turns as well as the cut being controlled simultaneously by the movement of the support bar. This device includes many disadvantages: the planned construction does not allow to adjust the distance between the support bar and the separating blade, on the other hand it is quite difficult to minimize the height of the flange on which the blade is fixed separation, causing an excessive number of turns to be cut; on the other hand, it suffices that the spring effect of the separation blade is reduced, for example after long use, so that the tightening effect between the support bar and the separation blade is no longer guaranteed, so it is possible to have one or more turns of the strip between the separation blade and the support bar that is not properly sectioned; the support bar directly resting on the upper turns, these are compressed which does not facilitate the introduction of the separation blade; the simultaneity of movements in advance of the support bar pressing on the last turn, separation and cutting blade causes the turns to move cut as well as damage to the coil placed directly under the separation blade and does not allow a clean cut of the turns to be cut; the device described does not allow several passages of the knife and, given the fixing of the cutting blade. on the support bar, exchanging a worn cutting blade is difficult. This device also does not include any means allowing release the tension of the upper turns of the coil in case said turns are tightly wound, making it impossible in this case use of the device described.
Les documents DE-A-39.18.552 et US-A-4.821.971 décrivent des dispositifs d'ouverture de bobines de grande largeur; les problèmes qui se posent dans ce cas sont essentiellement différents de ceux que propose de résoudre l'invention; en particulier ces dispositifs ne peuvent prévoir l'introduction d'une lame de séparation de spires sur toute la largeur de la bobine.Documents DE-A-39.18.552 and US-A-4.821.971 describe large width reel openers; the problems that pose in this case are essentially different from those proposed by solve the invention; in particular these devices cannot provide the introduction of a spiral separation blade over the entire width of the coil.
Un but de l'invention est donc de proposer un procédé compatible avec les procédés d'ouverture de bobine connus, ne rencontrant pas les inconvénients des moyens de l'art antérieur et permettant d'assurer que la spire située directement au-dessous de la dernière spire coupée est absolument intacte, ceci même si les spires supérieures de la bobine sont enroulées de manière assez serrée.An object of the invention is therefore to propose a compatible method with known reel opening methods, not meeting the disadvantages of the means of the prior art and making it possible to ensure that the turn directly below the last cut turn is absolutely intact, even if the upper turns of the coil are wrapped fairly tightly.
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, ceci même si les spires supérieures de la bobine sont enroulées de manière assez serrée.Another object of the invention is to propose a device for preparation of the opening of a coil which can be adapted on a device opening of a known coil and keeping the coil located intact directly below the last cut turn, even if the turns upper parts of the spool are wound fairly tightly.
Ces buts sont atteints par un procédé répondant aux
caractéristiques des revendications 1 à 8 ainsi que par un dispositif possédant
les caractéristiques mentionnées aux revendications 9 à 17.These goals are achieved by a process that meets the
characteristics of
L'invention est décrite ci-dessous en regard du dessin annexé
comportant les figures où:
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
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
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 barres 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 revêtements 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
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
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.We also note in Figure 2 a
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 à
laquelle 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
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 has been reached,
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
not at all necessary that the
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 an opening preparation device of a coil is shown in Figures 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
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, allows, in cooperation with a device cutting and gripping the upper turns of a coil, obtaining a strip of intact material for later use, said strip having not been damaged by the cutting device.
Claims (17)
- Method for preparing the opening of a reel (2), made up of a strip of flexible material rolled in superimposed turns (20) and having an upper turn (21), the free end of which is fixed on the turn that is directly beneath it, the said reel being disposed on a support shaft and having two parallel flanks (22), the opening of the reel being prepared by acting upon its entire width, this method being characterised in that a flat blade (13A; 50) is inserted between two successive turns (20, 21) through the flank (22) of the reel, at least one turn (21) being disposed over the flat blade.
- Method according to claim 1, characterised in that two friction fittings (18) made up of two elongated elements, parallel and disposed parallel to the support shaft of the reel (2), are applied simultaneously with a certain pressure on two surface portions of the upper turn (21), the two friction fittings (18) being then brought slightly toward one another in such a way that each drives the portion of surface on which it is pressed in order to form an arch (21A) made up of a portion of at least the upper turn (21), the flat blade (13A) being then inserted under the said arch (21A).
- Method according to claim 2, characterised in that each of the two friction fittings (18) is, in addition, driven in a rotation movement about a shaft (16A, 16B), parallel to the shaft of the reel (2), each of the two said rotation movements being of opposite direction and tending to create the said arch (21A).
- Method according to claim 1, characterised in that means of blowing (7) an air jet are provided in order to lift at least the upper turn (21) during the insertion of the flat blade (50).
- Method according to one of the preceding claims, characterised in that the reel (2) is immobile during all the steps of the method.
- Method according to one of the claims 1 or 4, characterised in that the reel (2) is driven in a rotation movement at reduced speed during the insertion of the flat blade (50).
- Method according to claim 6, characterised in that a small wheel (61) is pressed on the upper turn (21) during the insertion of the flat blade (50).
- Method according to one of the preceding claims, characterised in that after insertion of the flat blade (13A; 50), the opening of the reel can be ordered by activating a cutting device (4) including a cutting blade (40) for a cutting operation, severing only the turn or turns (21) disposed over the flat blade (13A; 50), the said cutting blade (40) coming to abut against the said flat blade (13A; 50) after the said cutting operation.
- Method for preparing the opening of a reel (2) made up of a strip of flexible material rolled in superimposed turns (20) and having an upper turn (21) the free end of which is fixed on the turn that is directly beneath it, the said reel (2) being disposed on a support shaft and having two parallel flanks (22), the opening of the reel being prepared by acting upon its entire width, this device being characterised in that it comprises in particular a flat blade (13A; 50) mounted on a blade support (13, 5), the said blade support being mounted on displacement means (10, 52) able to position the flat blade (13A; 50) at a predetermined distance from the upper surface of the upper turn (21) and having other displacement means (13B; 51) able to make the flat blade (13A; 50) advance between two successive turns (21, 20) through the flank (22) of the reel.
- Device according to claim 9, characterised in that it further comprises two friction fittings (18) made up of two elongated elements, parallel and disposed parallel to the support shaft of the reel, able to be applied simultaneously with a certain pressure on two surface portions of the upper turn (21), the two friction fittings (18) being then able to be brought slightly toward one another in such a way that each drives the portion of surface on which it is pressed in order to form an arch (21A) made up of a portion of at least the upper turn (21), the flat blade (13A) then being able to be inserted under the said arch (21A).
- Device according to claim 10, characterised in that it further comprises two crosspieces (15) disposed opposite in two planes spaced apart and parallel to the flanks (22) of the reel (2), each of the said crosspieces (15) being made up of a pair of bars (15A, 15B), the bars (15A, 15B) of each of the said crosspieces (15) and the crosspieces between themselves being connected by a central pivoting shaft (16) parallel to the support shaft of the reel (2) and passing through a generally central position of each bar (15A, 15B), the lower ends of each of the two opposite bars of the two crosspieces (15) being connected by a friction fitting (18) parallel to one another and to the support shaft of the reel (2), the upper ends of each of the two opposite bars of the two crosspieces (15) being connected through an upper shaft (16A, 16B) parallel to one another and to the support shaft of the reel (2), at least one of the said upper axes (16B) being able to be driven by the displacement means (17, 17A) in order to bring together the said upper axes (16A, 16B) in a direction perpendicular to the axis of the reel (2) and to the diameter of the reel passing through the said central shaft (16), the coming together of the said upper axes (16A, 16B) causing, through a scissors effect of each of the crosspieces (15), a pressing of each of the friction fittings (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 fittings (18) in order to form an arch (21A) made up of a portion of at least the upper turn (21).
- Device according to one of the claims 10 or 11, characterised in that the friction fittings (18) are covered by a material having a strong coefficient of friction with respect to the material making up the upper turn (21).
- Device according to one of the claims 9 to 12, characterised in that it further comprises means of detection (6, 61) of the position of the upper turn (21) as well as control means (9) able to order the displacement of the flat blade (13A; 50) in position for penetrating between two turns (20, 21) of the reel, according to the detected position of the upper turn (21).
- Device according to claim 9, characterised in that it further comprises means of projection (7, 70) of a jet of air oriented in the direction of the upper surface of the flat blade (50) as well as of the flank (22) of the reel (2).
- Device according to one of the claims 9 to 14, characterised in that it further comprises means making it possible to keep the reel (2) immobile.
- Device according to one of the claims 9, 13 or 14, characterised in that it further comprises means making it possible to set the reel (2) in rotation about its support shaft at a low speed.
- Device according to one of the claims 9 to 16, characterised in that it is associated with a device for cutting and grasping the cut end of the upper turn (21) including in particular a cutting blade (40) being able to sever the turn or turns (21) disposed over the flat blade (13A; 50), the said cutting blade (40) coming to abut against the said flat blade (13A; 50) after the cutting operation.
Priority Applications (5)
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 |
DE69430064T DE69430064T2 (en) | 1994-12-12 | 1994-12-12 | Method and device for preparing the opening of a web wrap |
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 EP0721905A1 (en) | 1996-07-17 |
EP0721905B1 true 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) |
Families Citing this family (23)
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
DE102005005371A1 (en) * | 2005-02-05 | 2006-08-10 | Voith Paper Patent Gmbh | Method and device for unwinding a material web from a material web 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 |
ITBO20070673A1 (en) * | 2007-10-03 | 2009-04-04 | Corima Internat Machinery S R | MACHINE FOR THE RECEPTION OF THE PAPER SHEETS OF WINDING OF PRODUCTS, IN PARTICULAR OF BATTERIES OF COVERS |
US9637263B2 (en) * | 2010-10-20 | 2017-05-02 | Siemens Industry, Inc. | Film-wrapped bundle opener |
WO2017183552A1 (en) * | 2016-04-18 | 2017-10-26 | 株式会社瑞光 | Method and system for removing outermost layer of original fabric roll |
EP3446841A4 (en) * | 2016-04-18 | 2020-07-22 | Zuiko Corporation | Method and apparatus for cutting outermost layer of original 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 |
Family Cites Families (22)
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 |
DE3215355A1 (en) * | 1981-05-13 | 1982-12-02 | Hauni-Werke Körber & Co KG, 2050 Hamburg | Device for separating layers of paper |
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 |
EP0318427B1 (en) | 1987-11-12 | 1991-07-17 | Fabriques De Tabac Reunies S.A. | Method and splicing device for strips of paper for the continuous feeding of a machine, particularly for making cigarettes |
DE68901551D1 (en) | 1988-02-25 | 1992-06-25 | Tabac Fab Reunies Sa | METHOD AND APPARATUS FOR OPENING A PAPER TAPE REEL. |
US4821971A (en) * | 1988-03-17 | 1989-04-18 | Kabushiki Kaisha Kaneda Kikai Seisakusho | Device for peeling and cutting off surface portions of paper rolls |
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 |
DE3918552C2 (en) * | 1989-06-02 | 1996-07-11 | Kaneda Kikai Seisakusho Toyona | Machine for preparing paper rolls for the splicing process |
DE69105084T2 (en) | 1990-08-24 | 1995-05-18 | Tabac Fab Reunies Sa | Device and method for opening a roll of paper and for connecting from the end of one paper web to the end of another paper web. |
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 |
SE469593B (en) * | 1991-12-20 | 1993-08-02 | Johansson Arne | PROCEDURE AND DEVICE FOR DE-PACKING OF A MATERIAL ROLL |
DE4212095C1 (en) * | 1992-04-10 | 1993-08-19 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
CH686429A5 (en) * | 1992-10-16 | 1996-03-29 | Von Roll Ag | Method and apparatus for unpacking a roll of paper. |
-
1994
- 1994-12-12 DE DE69430064T patent/DE69430064T2/en not_active Expired - Fee Related
- 1994-12-12 EP EP94810716A patent/EP0721905B1/en not_active Expired - Lifetime
-
1995
- 1995-12-01 DE DE69522303T patent/DE69522303T2/en not_active Expired - Fee Related
- 1995-12-11 US US08/570,278 patent/US6227088B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69522303T2 (en) | 2002-06-27 |
DE69430064T2 (en) | 2002-10-10 |
US6227088B1 (en) | 2001-05-08 |
DE69430064D1 (en) | 2002-04-11 |
DE69522303D1 (en) | 2001-09-27 |
EP0721905A1 (en) | 1996-07-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0721905B1 (en) | Method and device for preparing the opening of a reel | |
CA1256830A (en) | Simultaneous distributing and cutting device for rolled band materials, and roll at least being in use | |
EP0285490B1 (en) | Method and apparatus for the application of a protective film to one face of a series of ophthalmic lenses | |
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 | |
EP0301989B1 (en) | Web unwinding machine with reel-carrying towers | |
CH681538A5 (en) | ||
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 | |
EP2112106B1 (en) | Method and device for cutting and gluing end-to-end for an unrolling machine | |
EP0543693B1 (en) | Method and device for cleaving a wooden block into quarters | |
EP0662437B1 (en) | Device for connecting tapes of flexible material | |
EP1075910A1 (en) | Machine for cutting paper logs | |
EP1008152B1 (en) | Wiring harness wrapping | |
EP2406678B1 (en) | Device for extracting an optical element in an optical cable, and related method | |
EP0699610B1 (en) | Device for cutting and gluelessly applying the web leading end for a new web roll onto the core of a winder | |
FR2493038A1 (en) | HOLDING AND DETAILING TOOL FOR APPLYING A FREQUENCY BAND, IN PARTICULAR AN ANTI-IMPLOSION BELT ON A CATHODIC TUBE | |
EP1808393A1 (en) | Device and method of preparation of a section of adhesive tape having a desired length starting from a reel | |
EP0716996B1 (en) | Method and device for preparing and opening of a reel | |
EP3119709A1 (en) | Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin | |
WO2002034623A1 (en) | Device for binding products, in particular stem products, using adhesive tape | |
FR2547554A1 (en) | DISPENSING DEVICE FOR PACKING MACHINE | |
EP2730527A1 (en) | Unwinding device provided with a web lifting system | |
EP0363295B1 (en) | Device for cutting and uniting a moving web on a mandrel in continuous-winding machines | |
EP1319623B1 (en) | Method and device for knotting a thread on a bobbin | |
EP0820930B1 (en) | Machine for strapping rolls of web material |
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 |