EP0875476B1 - Winder with two mandrels for winding a web - Google Patents
Winder with two mandrels for winding a web Download PDFInfo
- Publication number
- EP0875476B1 EP0875476B1 EP98400995A EP98400995A EP0875476B1 EP 0875476 B1 EP0875476 B1 EP 0875476B1 EP 98400995 A EP98400995 A EP 98400995A EP 98400995 A EP98400995 A EP 98400995A EP 0875476 B1 EP0875476 B1 EP 0875476B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mandrel
- axis
- bearing
- winding
- chassis
- 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
- 238000004804 winding Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 5
- 230000000284 resting effect Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims 2
- 230000001154 acute effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 6
- 210000000056 organ Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/02—Supporting web roll
- B65H18/021—Multiple web roll supports
- B65H18/0212—Turrets
-
- 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
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
- B65H19/2215—Turret-type with two roll supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/413—Supporting web roll
- B65H2301/4136—Mounting arrangements not otherwise provided for
- B65H2301/41362—Mounting arrangements not otherwise provided for one of the supports for the roller axis being movable as auxiliary bearing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/24—Specific machines for handling web(s) unwinding machines
- B65H2408/241—Turret
- B65H2408/2415—Turret specified by number of arms
- B65H2408/24153—Turret specified by number of arms with two arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/173—Metal
Definitions
- the subject of the invention is a carousel winder for the winding of a product in band on one or the other at least two winding mandrels.
- Tape production facilities metallic generally include several sections having different functions, such as hot rolling, pickling, cold rolling, and finishing.
- a winder comprising a mandrel consisting of a shaft rotated around its axis and to which can be fixed, in a removable manner, the end of the strip.
- the mandrel extends overhang from a frame carrying the drive means in rotation of the mandrel and is provided with a system allowing shrink it to allow removal of the spool.
- the strip is kept under tension to tighten the turns.
- the coil When the coil reaches the desired diameter, corresponding to a certain strip length, it is removed from the mandrel.
- the first mandrel is then released and can return, by rotation of the chassis, in the first position of start-up.
- the second mandrel, on which have the first turns is placed in the full winding position.
- the winder could include three mandrels placed successively, by rotation of the chassis, in a first start position, a second full winding position and a third position of unloading.
- each mandrel expands, normally, cantilevered, from the rotating chassis so as to allow the withdrawal of the wound coil by axial sliding towards the side opposite to the chassis.
- the coil being very heavy, it is preferable, during winding that the opposite end of the mandrel to the chassis rests on a removable counter bearing, for example US-A-2707596.
- the counter bearing is simply placed on an erasable support forming a chair resting on the ground or on part of the frame fixed.
- the support chair At the end of the winding, the support chair is away from the mandrel to allow removal of the spool.
- the object of the invention is to remedy these disadvantages thanks to a new provision allowing support the mandrel in all positions and even during the rotation of the rotating frame.
- a paper roll winding device comprising several winding rods mounted on a support star which can rotate in stages so as to pass each rod in multiple positions, respectively threading a support sleeve, gluing, fixing the end of a strip, winding and roller discharge.
- the free end of each rod can be supported by a articulated arm mounted on a second star support and of which the opening is controlled by an indexing system to allow the evacuation of the coil and the threading of the muff.
- Such a device intended for manufacturing in series of toilet paper rolls, wouldn't usable for reel reel of a strip metal which must be maintained, during all the winding, under a traction which can exceed a tonne.
- the invention does, however, resolve this problem and therefore relates, in general, to a winding installation in reels of a strip metallic, comprising a rotating chassis mounted rotatably around a central axis on a fixed frame, two mandrels expandable mounted on the rotating frame and on the other of the central axis, each around an axis eccentric parallel to the central axis and each extending in overhang on the same side of the rotating chassis, from a first end of installation on the chassis to a second opposite end, means for selective control of the rotation of each mandrel around its axis for winding the metal strip and means for controlling the rotation of the chassis rotating around its central axis, for the establishment selective of a first mandrel in a first position for fixing the end of a strip metallic and winding start with setting belt tension, then the passage of said first mandrel from the first position to a second position diametrically opposite, spool discharge wound, with simultaneous return of the second unloaded mandrel from said unloading position to the
- the installation includes a permanent support means for the free end of the mandrel during winding, likely to rotate with the chassis at an angle of 180 ° rotation between the first start position and the second position of complete winding of the reel and unloading by casing the increasing coil weight and tensile force applied by the strip, said permanent support means comprising at least one support rod extending along a direction parallel to the central axis, at least on one length greater than the width of a coil, between a end embedded in the rotating frame and a opposite end, at least one support arm having a first end hinged around an axis on the end opposite the support rod and a second end carrying a removable support member, control means rotation of said at least one support arm around its axis between two positions, respectively, a first engagement position of the removable support member
- the articulation axis of the support arm can be perpendicular to the central axis, the support arm coming then place yourself in a plane substantially parallel to this axis, in the unloading position.
- the axis of articulation can also be parallel to the central axis, the support arm then being offset angularly with respect to the mandrels so that the organ support is far enough away from said mandrels to not not hinder the discharge of a coil completely wound.
- the arm of support is articulated on a single rod forming a tree support centered on the central axis of rotation of the chassis turning.
- the central support shaft can advantageously be mounted rotatable about the axis on said rotating chassis with possibility of angular sliding, the winder comprising means for applying to the shaft of support, of a torque around the central axis adjusted to compensate for the weight of the current reel of winding and the torque resulting from the traction exerted on the tape, so that the resultant of the whole forces applied to the support arm by the mandrel during winding is exercised in a direction passing substantially through the central axis of the rotating chassis.
- the arm of support of the support member comprises two branches articulated respectively on two offset support rods symmetrically on either side of the plane passing through the mandrel axes, at a sufficient distance from it to allow the winding of a coil on each mandrel up to a maximum radius corresponding to the distance between the central axis and the axis of the mandrel.
- each support rod forms a beam extending cantilevered from the rotating frame and having a cross section of inertia sufficient to resist to the forces applied to the mandrel by the strip under traction.
- the removable support member comprises a counter bearing likely to engage, by displacement relative axial, on a pin at the end of the mandrel opposite to the rotating chassis.
- each mandrel is of the type comprising segments which can be moved radially under the action of a control rod sliding axially in a bore of the mandrel shaft.
- the mandrel support pin is advantageously provided at the end of the control rod and can engage removably, by axial displacement of said rod, in a housing corresponding to the arm of support after the installation of the latter in the axis of the mandrel.
- the removable support member consists of at least two jaws each placed at the end of a mounted arm pivoting on a support rod about an axis parallel to the central axis, between an open position for which the two jaws are far enough apart from the mandrel to allow removal of the coil, and a closed position for which the jaws are tightened on the end of the mandrel in the manner of pliers.
- the two-winder mandrels is equipped with two support members each consisting of a pair of jaws and mounted on two swivel arms each carrying two jaws belonging respectively to each of the two support members so that one or the other of the two mandrels is supported alternately by pivoting the two arms in one direction or in the other, the two jaws of a pair being in closed position on one of the chucks when both the jaws of the other pair are spread apart, in position open on either side of the other mandrel, so that allow unloading of the wound reel.
- Figure 1 is a schematic top view of a carousel winder equipped with a device according to the invention.
- Figure 2 is a schematic front view of the Figure 1 winder.
- Figure 3 shows, in top view, another arrangement of support arms.
- Figure 4 is a front view of an assembly method support arms.
- Figure 5 shows schematically, the forces applied to the mandrel in three successive positions of the rotating chassis.
- Figure 6 shows schematically, in front view, another embodiment of the invention.
- Figure 7 is an elevational view of another mode of achievement.
- Figure 8 is a front view of the mode of realization of figure 7.
- FIG. 9 is a detail view, in axial section, a system for engaging the removable support member on the end of the mandrel.
- Figure 10 and Figure 11 show, in view of face, two other embodiments of the invention.
- Figure 12 shows the operating steps of the embodiment of Figure 11.
- a carousel winder conventionally comprising a revolving frame 1 rotatably mounted around a central axis 10, the chassis consisting, for example, of a drum cylindrical rolling on separated rollers 11 mounted rotary on a foundation block 12 or a fixed frame, each around an axis parallel to the central axis.
- a way rotation control such as a pinion 13 driven in rotating and meshing with a toothed crown not shown, formed on the periphery of the drum 1 allows to rotate it around its axis 10.
- chassis 1 On chassis 1 are mounted two mandrels winding 21, 22 extending in overhang from the chassis 1 and on the same side thereof.
- Each chuck 21, 22 is mounted on a shaft 2a, 2b and can be driven in rotation about an axis 20, 20 'parallel to the axis 10 of the rotating chassis 1 by means, for example, of a motor autonomous 23, 23 'mounted in the chassis 1.
- the motor rotation 23 can be hydraulic or electric.
- Each mandrel is made, in a conventional manner, a tree 2 associated, as shown in FIG. 9, with a set of adjacent segments 26 mounted sliding radially on the shaft 2 and actuated by a rod 25 passing through an axial bore of the shaft 2 and carrying a rack which controls the expansion of the mandrel by segment spacing for hooking and winding of the band and then tightening the segments for allow the coil to be removed at the end of the winding.
- the rotating chassis allows place each of the two mandrels successively in a first winding start position A then in a second position B for complete winding and extraction of the coil.
- the two positions A and B are diametrically opposite, so that one of the mandrels 21 either in the start position A when the other mandrel 22 is in position B for extracting the coil.
- the shaft 2 of each mandrel is embedded in chassis 1 at its end turned towards it and thus extends cantilevered supporting the weight of the reel 3.
- the end 24 of the shaft 2 of the mandrel opposite the chassis 1 can, depending on the invention, to be removably supported on the solid mass of foundation 12 or on a fixed frame, via a rotary support member 4.
- the support member 4 comprises a counter bearing 40 mounted at the end of a support arm 41 which, at its other end, is mounted on the end of a central shaft 5 centered on the central axis 10 and of which the opposite end 51 is embedded in the chassis turning 1.
- the support arm 41 is articulated on the free end 52 of the central shaft 5 around an axis 42 perpendicular to the central axis 10 so as to allow 180 ° rotation of the support arm 41 with the counter bearing 4a
- the latter is, on the other hand, arranged so that its two lateral faces 43, 43 ′ can engage so removable on a pin at the end 24 of the shaft 2 of the mandrel.
- the rotation of the arm 41 can be controlled by any means, easy to design and supported by the central shaft 5, for example, an actuated rack 53 by a jack 54 and meshing on a pinion centered on the axis 42 and integral in rotation with the arm 41.
- the counter-bearing 40 can be equipped, on its two lateral faces 43, 43 ', of two contiguous bearings committing, in one way or the other, to one or the other of the journals with a clearance allowing the arm rotation 41.
- This operation can be carried out during the time necessary for the engagement of the head 31 of the band of the new coil on the mandrel 21.
- the mandrel 21 is supported, at its end 24 ', by the support member 4.
- the tensile force applied to the strip for allow the winding thereof does not result in bending of the mandrel 21 which is held at its two ends respectively by the rotating frame 1 and by the member support 4 and the corresponding reaction is transmitted to foundation mass by the arm 41, the central shaft 5 and the chassis 1.
- the central shaft 5 which is embedded, by its end 51, on chassis 1 may have rigidity necessary to absorb this reaction.
- the opposite end 52 of the central shaft 5 build directly on the foundation, by example by means of a counter bearing 55 which can engage from removably on the end 52 of the shaft 5, the counter bearing 55 being carried, for this purpose, by a support arm 56, for example as shown in Figure 2.
- the arm 56 carrying the counter bearing 55 and bearing on the foundation block 12 is rotatably mounted around an axis 57 spaced from the central axis 10 and from the axis 20 of the mandrel 21.
- the support arm 41 is mounted pivoting around the axis 42, on the end 52 of the central shaft 5 and the latter can be secured in rotation with the rotating frame 1 so as to rotate with this one when we pass the shaft 21 from the position start A to full winding position B.
- the organ support 4 remains engaged on the journal of the mandrel 21 and therefore allows it to withstand the tractive effort applied by the strip without risk of bending of the mandrel 21, the reaction being taken up by the central shaft 5.
- the tree central 5 is rotatably mounted around axis 10 on the rotating frame 1, so as to allow sliding angular and is associated with a torque motor 61, fixed on a extension 6 of the shaft 5 and making it possible to apply to this one a torque.
- the strip 32 is subjected to tensile stress T whose distance to the axis of rotation 20 gradually increases, as well as the weight P of the coil 30 which is added to the self-weight of the arm 41.
- the torque motor 61 exerts on the central shaft 5, a direction compensation pair reverse, which is permanently adjusted according to the length of wound tape and orientation of the stretched strand 32 so that the reaction applied to the support arm 41 which is the result of the tensile force T applied on the strip and the weight of the reel 30, passes substantially by the central axis 10.
- Figure 5a shows the start position for which the load P applied to the axis of the mandrel is relatively small, for example a ton. Traction applied can be of the order of 2.5 T. The resulting R, directed upwards, is compensated by an opposite force R ' having an R'x component taken up by the support arm and a component R'y taken up by the application of the torque. We sees that, in this position, the support arm OA is subjected to traction and the torque is applied in the direction trigonometric.
- the applied load P can be of the order of 20 T and the traction T of approximately 7 T, the scale of representation of the forces being modified.
- the resultant R is directed downwards and the charge P is mainly taken up by the support arm OA which is compressed.
- the couple is then directed in the direction negative, opposite to the tensile force.
- Figure 5c corresponds to the position of unloading after complete winding.
- the charge P can be 30 T, the pull being 15 T.
- the torque is applied again in the positive direction and compensates essentially the charge P.
- a brake 60 capable of blocking the rotation of the shaft 5.
- the winder can operate, either with application of a modulated compensation torque, i.e. with securing of the central shaft.
- the two mandrels 21, 22 are associated, respectively, with two support members 4a, 4b each mounted at the end of an arm support 41a, 41b articulated on the end of the shaft central 5 around an axis (40a, 40b) perpendicular to the central axis 10.
- the two support arms 41a, 41b can be articulated on a part 44 forming a core which is keyed on the end 52 of the central shaft 5 so as to rotate therewith.
- Each arm 41a, 41b can be associated with a jack rotary hydraulic 45a, 45b which controls the rotation of the arms around its axis.
- the counter bearing 40 placed at the end arm 41a, 41b is arranged so as to be able to engage in one direction on the end 24 of the mandrel, by rotation around its axis.
- the counter-bearing 55 for supporting the central shaft 5 is mounted at the end of a rod 5 'placed in the extension of the shaft 5 so as to allow the rotation of one or the other of the two arms 41a, 41b for the release of the corresponding support member 4a, 4b.
- the counter bearing 55 does not hinder the discharge of the coil and can be mounted on a fixed support resting on the foundation 12.
- Central shaft 5 must have a minimum section ensuring sufficient rigidity to withstand the reaction chucks. As a result, the maximum diameter of the coil that can be wound on each mandrel is limited at the distance between the axis 20 of the mandrel and the periphery of tree 5.
- each support arm 41 carrying a support member 4 consists of two branches 45, 45 ' articulated respectively on the two support rods 7, 7 ' around axes 46, 46 'which are aligned and perpendicular in plane P 'passing through the axes of the two mandrels.
- each rod 7, 7 ' must register in the space limited by the two centered circles on the axes 20, 20 'of the mandrels and having a radius equal to the distance between the axis 20 of the mandrel and the central axis 10.
- each rod 7, 7 ' has a section substantially triangular and is bounded by faces curved in the shape of circular sectors centered on the axes 20 and 20 '.
- each support arm 41 is articulated around an axis perpendicular to the central axis 10 and comes place themselves in a position parallel to this axis to allow unloading of the wound reel.
- the release of the support member 4 can also be carried out by pivoting around an axis parallel to the central axis 10, the support member 4 then remaining in a plane perpendicular to this axis.
- the winder is equipped with two support members 4a, 4b carried respectively by the ends of two arms 41a, 41b which are pivotally mounted on the end of a central shaft 5, around the axis 10 thereof.
- each arm 41a, 41b can be associated with a toothed sector 61 ′ on which a fixed gear 62 rotated by a non-mechanism shown which can advantageously be mounted in a fixed support member 56 'carrying a centering bearing of the end of the shaft 5 opposite the rotating frame 1, the fixed support member 56 'can be simply fixed on the frame or the foundation 12.
- each organ support 4 can be placed by simple rotation of the support around axis 10, in line with the axis of a mandrel, either in a separated position C 'for which the support arm 41 is, for example, perpendicular to the plane passing through the axes of the mandrels 21, 22.
- the latter advantageously comprises a counter bearing 40 carried by a piece 47 slidingly mounted axially on the end of the support arm 41 which carries a sliding control member 48, for example a cylinder or screw-nut system.
- a winding mandrel usually consists of a set of segments mounted to slide radially on a rotation shaft and whose expansion can be controlled or shrinking it by means of a sliding control rod axially.
- the support member 4 includes a counter bearing 40 which can be mounted on the end 27 of the expansion rod 25 and engages in a corresponding housing 47 'formed at the end of the support arm 41, when sliding axially the control rod 25 to determine the expansion of the mandrel. Conversely, at the end of the winding of a reel, the control rod is moved back to determine the shrinking of the mandrel and, at the same time, the counter bearing 40 is released from the housing 47 ′, which allows the pivoting of the arm 41 in the separated position C '.
- the counter-bearing which constitutes the removable support member may be formed by two half-bearings formed on two movable jaws likely to tighten, like a clamp on the end 24 from the mandrel shaft, or move away from it to allow unloading of the wound reel.
- each of the two arms can advantageously carry two jaws belonging, respectively, to each of the two support members.
- the support member 8 consists of two jaws 8a, 8b each placed at one end of an arm 81a, 81b which carries, at its other end, a jaw 8'a, 8'b of the other support member 8 '.
- the two arms 81a, 81b are articulated, in their central part, on a tree central 5, around a common pivot 82 centered on axis 10 of the rotating frame 1, the centers of the jaws being placed at the same distance from the central axis 10 as the axes of the two mandrels 21, 22.
- each arm 81 is offset laterally with respect to pivot 82 of such so that the planes P1, P2 passing through the central axis 10 and the centers of the jaws 8a, 8'a form an obtuse angle.
- Each of the two arms 81a, 81b, is provided with a sector toothed 61 'on which meshes a pinion 62 actuated by a mechanism mounted on the rotating frame 1 and capable of turn the arm 81 in one direction or the other.
- the two jaws 8a, 8b come to tighten, like a pliers, on the end 24 of the shaft of one of the mandrels 21 while the other two jaws 8'a, 8'b deviate from the other mandrel 22 of sufficient distance to allow removal of the wound coil.
- the arms 81 of support of the jaws remain in a plane perpendicular to the central axis 10.
- the central shaft 5 can therefore either extend in overhang from the rotating chassis 1, either rest on a fixed support by its opposite end to chassis 1.
- the arms 83a, 83b, for supporting the support members 8, 8 ' are articulated, respectively, on pivots 82a, 82b with axes parallel to the central axis 10 and formed on the ends two rods 7a, 7b, each forming a support beam, analogously to the embodiment of FIG. 6.
- Each support member 8, 8 ′ further consists of two half-bearings provided on two jaws 8c, 8d carried, respectively, by the two arms 83a, 83b.
- each of the two arms 83a, 83b extends between the two mandrels 21, 22 and has a sector shape angular pivotally mounted, at its apex, on a rod 7a, 7b and carrying two jaws apart, respectively 8c, 8'c and 8d 8'd, whose centers are placed on a centered circle on the axis of the corresponding pivot 82a, 82b and passing through the axes of the two mandrels 21, 22.
- Each of the two arms 83a, 83b is provided with a sector toothed 63a, 63b centered on the axis of the support rod corresponding 7a, 7b and on which a pinion 64a meshes, 64b centered on the axis of the other support rod 7b, 7a.
- the mandrel 21 is in the start position A.
- the two jaws 8c, 8d are tightened on the end of the shaft of the first mandrel 21 while the other two jaws 8'c, 8'd are moved apart of the second mandrel 22 which is in position B of unloading, so as to allow removal of the coil 3 fully wound.
- a reel E of known type is applied to the mandrel 21 to facilitate the attachment of the strip 32 and the start of the winding.
- Figure 12b shows an intermediate position of the rotating chassis.
- the first mandrel 21 on which takes place the winding of the strip 32 is supported by the two arms 83a, 83b, the other mandrel 22 being discharged.
- Figure 12c shows the end of the winding, the first mandrel 21 being in the position of unloading B. It may be advantageous to order separately the rotation of the two arms 83a, 83b.
- the support arm 83b has already been moved apart to place the jaw 8'c on the second mandrel 22 which is in start position A, while the mandrel 21 can still be supported by the arm 83a up to taking over the coil.
Landscapes
- Replacement Of Web Rolls (AREA)
- Winding Of Webs (AREA)
Abstract
Description
L'invention a pour objet une bobineuse à carrousel pour l'enroulement d'un produit en bande sur l'un ou l'autre d'au moins deux mandrins d'enroulement.The subject of the invention is a carousel winder for the winding of a product in band on one or the other at least two winding mandrels.
Les installations de production de bandes métalliques comprennent, généralement, plusieurs sections ayant des fonctions différentes, tel que laminage à chaud, décapage, laminage à froid, et finition.Tape production facilities metallic generally include several sections having different functions, such as hot rolling, pickling, cold rolling, and finishing.
Même si, dans certains cas, on peut regrouper certaines sections, il est généralement nécessaire d'enrouler la bande en bobine, à la sortie d'une section, pour la transporter sur la section suivante.Even if, in some cases, we can group some sections it is usually necessary wind the tape in a reel, at the end of a section, to transport it to the next section.
A cet effet, on utilise une bobineuse comprenant un mandrin constitué d'un arbre entraíné en rotation autour de son axe et sur lequel peut être fixé, de façon amovible, l'extrémité de la bande. Par rotation du mandrin autour de son axe, on enroule la bande sur le mandrin, en spires superposées, jusqu'à constitution d'une bobine.For this purpose, a winder is used comprising a mandrel consisting of a shaft rotated around its axis and to which can be fixed, in a removable manner, the end of the strip. By rotation of the mandrel around its axis, we wrap the strip on the mandrel, in turns superimposed, until a coil is formed.
Le plus souvent, le mandrin s'étend en porte-à-faux à partir d'un bâti portant les moyens d'entraínement en rotation du mandrin et est muni d'un système permettant de le rétreindre pour permettre le retrait de la bobine.Most often, the mandrel extends overhang from a frame carrying the drive means in rotation of the mandrel and is provided with a system allowing shrink it to allow removal of the spool.
Généralement, la bande est maintenue sous traction pour réaliser un resserrement des spires. Lorsque la bobine atteint le diamètre souhaité, correspondant à une certaine longueur de bande, elle est retirée du mandrin.Generally, the strip is kept under tension to tighten the turns. When the coil reaches the desired diameter, corresponding to a certain strip length, it is removed from the mandrel.
Après enlèvement de la bobine, on fait arriver sur le mandrin l'extrémité de la bande suivante et l'opération peut recommencer.After removing the coil, we arrive on the mandrel the end of the next strip and the operation can start again.
Le retrait de la bobine complètement enroulée et le début d'enroulement de la bobine suivante impose un temps mort dont on cherche à réduire la durée. En effet, il est préférable de ne pas arrêter le défilement de la bande dans l'installation de traitement précédant la bobineuse et l'on est donc amené à associer celle-ci à un système d'accumulation dont la capacité dépend du temps mort nécessaire pour le changement de bobine. Removing the fully wound reel and start of winding of the next reel imposes a time death whose duration one seeks to reduce. Indeed, it is better not to stop the tape running in the processing installation preceding the winder and is therefore led to associate it with a system of accumulation whose capacity depends on dead time required for coil change.
Pour réduire ce temps mort, on a donc proposé d'utiliser une installation dite "bobineuse à carrousel", comprenant un châssis tournant, monté rotatif autour d'un axe central sur un bâti fixe, et sur lequel sont fixés au moins deux mandrins qui s'étendent en porte-à-faux sur un même côté du châssis à partir d'une extrémité encastrée. Chaque mandrin peut être entraíné en rotation autour de son axe qui est parallèle à l'axe central.To reduce this dead time, we therefore proposed to use a so-called "carousel winder" installation, comprising a rotating chassis, rotatably mounted around a central axis on a fixed frame, and on which are fixed to minus two mandrels which extend overhanging one same side of the chassis from a recessed end. Each mandrel can be rotated around its axis which is parallel to the central axis.
Dans une bobineuse de ce type, décrite, par exemple, dans le document US-A-3985313, il est possible, en orientant le châssis tournant, de placer chacun des mandrins dans au moins deux positions successives. Dans une première position de démarrage de l'enroulement, l'extrémité de la bande est fixée sur le mandrin et l'on commande la rotation de celui-ci pour enrouler la bande sur un certain nombre de spires. Ensuite, par rotation du châssis tournant, on amène le premier mandrin en cours d'enroulement dans une seconde position permettant l'enroulement complet de la bande. En même temps, par la rotation du châssis tournant, le second mandrin vient se placer en attente dans la première position de démarrage.In a winder of this type, described, for example, in the document US-A-3985313, it is possible, by orienting the rotating chassis, to place each of the mandrels in at least two positions successive. In a first starting position of winding, the end of the strip is fixed on the mandrel and we control the rotation of it to wind the strip over a number of turns. Then, by rotating the rotating chassis, we bring the first mandrel being wound up in a second position allowing the complete winding of the strip. At the same time, by the rotation of the rotating chassis, the second mandrel comes stand by in the first starting position.
De la sorte, lorsque la longueur souhaitée de bande a été enroulée sur le premier mandrin, elle est coupée suivant une ligne de cisaillement perpendiculaire à la direction de défilement et les extrémités de la bande placées en amont de cette ligne de cisaillement qui constitue la tête de la bande suivante, peut être immédiatement fixée sur le second mandrin en position d'attente de façon à commencer l'enroulement de la bande suivante pendant le temps nécessaire au déchargement de la bobine complètement enroulée.So when the desired length of tape has been wound on the first mandrel, it is cut along a shear line perpendicular to the direction of travel and the ends of the strip placed upstream of this shear line which is the head of the next band, maybe immediately attached to the second mandrel in position waiting so as to start winding the tape next for the time required to unload the fully wound coil.
Le premier mandrin est alors libéré et peut revenir, par rotation du châssis, dans la première position de démarrage. En même temps, le second mandrin, sur lequel ont été enroulées les premières spires, est placé dans la position d'enroulement complet.The first mandrel is then released and can return, by rotation of the chassis, in the first position of start-up. At the same time, the second mandrel, on which have the first turns, is placed in the full winding position.
Une telle bobineuse dite "à carrousel" permet donc de réduire considérablement les temps morts. Such a so-called "carousel" winder therefore allows significantly reduce downtime.
Bien entendu, d'autres dispositions sont possibles et, par exemple, la bobineuse pourrait comprendre trois mandrins placés successivement, par rotation du châssis, dans une première position de démarrage, une seconde position d'enroulement complet et une troisième position de déchargement.Of course, other arrangements are possible and, for example, the winder could include three mandrels placed successively, by rotation of the chassis, in a first start position, a second full winding position and a third position of unloading.
Comme on l'a indiqué, chaque mandrin s'étend, normalement, en porte-à-faux, à partir du châssis tournant de façon à permettre le retrait de la bobine enroulée par coulissement axial vers le côté opposé au châssis. Cependant, la bobine étant très lourde, il est préférable, au cours de l'enroulement que l'extrémité du mandrin opposée au châssis repose sur un contre-palier amovible, par exemple US-A-2707596.As noted, each mandrel expands, normally, cantilevered, from the rotating chassis so as to allow the withdrawal of the wound coil by axial sliding towards the side opposite to the chassis. However, the coil being very heavy, it is preferable, during winding that the opposite end of the mandrel to the chassis rests on a removable counter bearing, for example US-A-2707596.
Dans les bobineuses à un seul mandrin, le contre-palier est simplement placé sur un support effaçable formant une chaise reposant sur le sol ou sur une partie du bâti fixe.In single-core winders, the counter bearing is simply placed on an erasable support forming a chair resting on the ground or on part of the frame fixed.
A la fin de l'enroulement, la chaise de support est écartée du mandrin pour permettre le retrait de la bobine.At the end of the winding, the support chair is away from the mandrel to allow removal of the spool.
Dans les bobineuses à carrousel, on peut également utiliser un contre-palier amovible monté sur une chaise de support qui est disposée dans la position d'enroulement complet, de façon à supporter le mandrin jusqu'à la fin de l'enroulement, c'est à dire lorsque la bobine est la plus lourde. En revanche, le mandrin se trouvant dans la position de démarrage est généralement laissé libre et son extrémité encastrée dans le châssis tournant est soumise à des efforts importants dûs au poids de la bobine qui augmente progressivement et, en outre, à l'effort de traction qui doit être modulé en fonction du diamètre et est particulièrement important au début de l'enroulement.In carousel winders, you can also use a removable counter-bearing mounted on a chair support which is arranged in the winding position complete, so as to support the mandrel until the end of winding, i.e. when the coil is the most heavy. On the other hand, the mandrel being in the position is generally left free and its end embedded in the rotating frame is subjected to forces important due to the weight of the coil which increases gradually and, in addition, to the tensile force which must be modulated according to the diameter and is particularly important at the start of winding.
Bien entendu, il serait possible d'associer une seconde chaise de support au mandrin en position de démarrage mais un tel dispositif serait assez encombrant et, de toutes façons, ne constituerait un appui pour le mandrin que pour l'enroulement des premières spires, le mandrin restant en porte-à-faux au cours de sa rotation de la position de démarrage à la position d'enroulement complet.Of course, it would be possible to associate a second mandrel support chair in position startup but such a device would be quite bulky and, in any case, would not constitute a support for the mandrel that for the winding of the first turns, the mandrel remaining cantilevered during its rotation from the start position to full winding position.
L'invention à pour objet de remédier à ces inconvénients grâce à une nouvelle disposition permettant d'assurer le support du mandrin dans toutes les positions et, même au cours de la rotation du châssis tournant.The object of the invention is to remedy these disadvantages thanks to a new provision allowing support the mandrel in all positions and even during the rotation of the rotating frame.
On connaít, par le document US-A-4266735, un dispositif d'enroulement de rouleaux de papier comportant plusieurs tiges d'enroulement montées sur un support en étoile qui peut tourner par étapes de façon à faire passer chaque tige dans plusieurs positions, respectivement d'enfilement d'un manchon de support, d'encollage, de fixation de l'extrémité d'une bande, d'enroulement et d'évacuation du rouleau. Pour éviter les vibrations, l'extrémité libre de chaque tige peut être supportée par un bras articulé monté sur un second support en étoile et dont l'ouverture est commandée par un système d'indexage pour permettre l'évacuation de la bobine et l'enfilement du manchon.We know, from document US-A-4266735, a paper roll winding device comprising several winding rods mounted on a support star which can rotate in stages so as to pass each rod in multiple positions, respectively threading a support sleeve, gluing, fixing the end of a strip, winding and roller discharge. To avoid vibrations, the free end of each rod can be supported by a articulated arm mounted on a second star support and of which the opening is controlled by an indexing system to allow the evacuation of the coil and the threading of the muff.
Un tel dispositif, prévu pour la fabrication en série de rouleaux de papier-toilette, ne serait pas utilisable pour l'enroulement en bobine d'une bande métallique qui doit être maintenue, pendant tout l'enroulement, sous une traction pouvant dépasser une tonne.Such a device, intended for manufacturing in series of toilet paper rolls, wouldn't usable for reel reel of a strip metal which must be maintained, during all the winding, under a traction which can exceed a tonne.
L'invention permet, en revanche, de résoudre ce problème et concerne donc, d'une façon générale, une installation d'enroulement en bobines d'une bande métallique, comprenant un châssis tournant monté rotatif autour d'un axe central sur un bâti fixe, deux mandrins expansibles montés rotatifs sur le châssis tournant de part et d'autre de l'axe central, chacun autour d'un axe excentré parallèle à l'axe central et s'étendant chacun en porte-à-faux sur un même côté du châssis tournant, à partir d'une première extrémité d'encastrement sur le châssis jusqu'à une seconde extrémité opposée, des moyens de commande sélective de la rotation de chacun des mandrins autour de son axe pour l'enroulement de la bande métallique et des moyens de commande de la rotation du châssis tournant autour de son axe central, pour la mise en place sélective d'un premier mandrin dans une première position de fixation de l'extrémité d'une bande métallique et de démarrage de l'enroulement avec mise en tension de la bande, puis le passage dudit premier mandrin de la première position à une deuxième position diamétralement opposée, de déchargement de la bobine enroulée, avec retour simultané du second mandrin déchargé de ladite position de déchargement à la première position de démarrage.The invention does, however, resolve this problem and therefore relates, in general, to a winding installation in reels of a strip metallic, comprising a rotating chassis mounted rotatably around a central axis on a fixed frame, two mandrels expandable mounted on the rotating frame and on the other of the central axis, each around an axis eccentric parallel to the central axis and each extending in overhang on the same side of the rotating chassis, from a first end of installation on the chassis to a second opposite end, means for selective control of the rotation of each mandrel around its axis for winding the metal strip and means for controlling the rotation of the chassis rotating around its central axis, for the establishment selective of a first mandrel in a first position for fixing the end of a strip metallic and winding start with setting belt tension, then the passage of said first mandrel from the first position to a second position diametrically opposite, spool discharge wound, with simultaneous return of the second unloaded mandrel from said unloading position to the first position starting.
Conformément à l'invention, le premier mandrin étant entraíné en rotation autour de son axe pour l'enroulement de la bande pendant la rotation du châssis tournant de la première position de démarrage jusqu'à la deuxième position de déchargement, avec maintien sur la bande d'un effort de traction, l'installation comprend un moyen de support permanent de l'extrémité libre du mandrin en cours d'enroulement, susceptible de tourner avec le châssis sur un angle de rotation de 180° entre la premiere position de démarrage et la deuxième position d'enroulement complet de la bobine et de déchargement en encaissant le poids croissant de la bobine et l'effort de traction appliqué par la bande, ledit moyen de support permanent comprenant au moins une tige d'appui s'étendant suivant une direction parallèle à l'axe central, au moins sur une longueur supérieure à la largeur d'une bobine, entre une extrémité encastrée dans le châssis tournant et une extrémité opposée, au moins un bras de support ayant une première extrémité articulée autour d'un axe sur l'extrémité opposée de la tige d'appui et une seconde extrémité portant un organe d'appui amovible, des moyens de commande de la rotation dudit au moins un bras de support autour de son axe entre deux positions, respectivement, une première position d'engagement de l'organe d'appui amovible sur la seconde extrémité libre de l'un des mandrins, et une seconde position de dégagement dans laquelle le bras de support est suffisamment écarté du mandrin pour permettre le déchargement d'une bobine enroulée ayant un diamètre maximal du même ordre que la distance entre l'axe du mandrin et l'axe central du châssis, des moyens de solidarisation en rotation du bras de support et de la tige d'appui avec le châssis tournant entre la première position de démarrage pour laquelle l'organe d'appui amovible s'engage sur l'extrémité libre du mandrin en début d'enroulement et la deuxième position de déchargement pour laquelle l'organe d'appui amovible est dégagé et le bras de support est écarté.According to the invention, the first mandrel being rotated around its axis to the winding of the strip during the rotation of the chassis turning from the first start position to the second unloading position, with hold on the band of a tensile force, the installation includes a permanent support means for the free end of the mandrel during winding, likely to rotate with the chassis at an angle of 180 ° rotation between the first start position and the second position of complete winding of the reel and unloading by casing the increasing coil weight and tensile force applied by the strip, said permanent support means comprising at least one support rod extending along a direction parallel to the central axis, at least on one length greater than the width of a coil, between a end embedded in the rotating frame and a opposite end, at least one support arm having a first end hinged around an axis on the end opposite the support rod and a second end carrying a removable support member, control means rotation of said at least one support arm around its axis between two positions, respectively, a first engagement position of the removable support member on the second free end of one of the mandrels, and a second release position in which the arm of support is sufficiently spaced from the mandrel to allow unloading a wound coil having a diameter maximum of the same order as the distance between the axis of the mandrel and central axis of the chassis, securing means in rotation of the support arm and the support rod with the chassis rotating between the first start position for which the removable support member engages on the free end of the mandrel at the start of winding and the second unloading position for which the unit removable support is released and the support arm is discarded.
L'axe d'articulation du bras de support peut être perpendiculaire à l'axe central, le bras de support venant alors se placer dans un plan sensiblement parallèle à cet axe, dans la position de déchargement.The articulation axis of the support arm can be perpendicular to the central axis, the support arm coming then place yourself in a plane substantially parallel to this axis, in the unloading position.
Mais l'axe d'articulation peut aussi être parallèle à l'axe central, le bras de support étant alors décalé angulairement par rapport aux mandrins de façon que l'organe d'appui soit suffisamment éloigné desdits mandrins pour ne pas gêner le déchargement d'une bobine complètement enroulée.But the axis of articulation can also be parallel to the central axis, the support arm then being offset angularly with respect to the mandrels so that the organ support is far enough away from said mandrels to not not hinder the discharge of a coil completely wound.
Dans un premier mode de réalisation, le bras de support est articulé sur une tige unique formant un arbre d'appui centré sur l'axe central de rotation du châssis tournant. Dans ce cas, l'arbre d'appui central peut avantageusement être monté rotatif autour de l'axe sur ledit châssis tournant avec possibilité de glissement angulaire, la bobineuse comprenant des moyens d'application sur l'arbre d'appui, d'un couple de rotation autour de l'axe central réglé de façon à compenser le poids de la bobine en cours d'enroulement et le couple résultant de la traction exercée sur la bande, de telle sorte que la résultante de l'ensemble des efforts appliqués sur le bras de support par le mandrin en cours d'enroulement s'exerce suivant une direction passant sensiblement par l'axe central du châssis tournant.In a first embodiment, the arm of support is articulated on a single rod forming a tree support centered on the central axis of rotation of the chassis turning. In this case, the central support shaft can advantageously be mounted rotatable about the axis on said rotating chassis with possibility of angular sliding, the winder comprising means for applying to the shaft of support, of a torque around the central axis adjusted to compensate for the weight of the current reel of winding and the torque resulting from the traction exerted on the tape, so that the resultant of the whole forces applied to the support arm by the mandrel during winding is exercised in a direction passing substantially through the central axis of the rotating chassis.
Dans un autre mode de réalisation, le bras de support de l'organe d'appui comprend deux branches articulées respectivement sur deux tiges d'appui décalées symétriquement de part et d'autre du plan passant par les axes des mandrins, à une distance suffisante de celui-ci pour permettre l'enroulement d'une bobine sur chaque mandrin jusqu'à un rayon maximal correspondant à la distance entre l'axe central et l'axe du mandrin.In another embodiment, the arm of support of the support member comprises two branches articulated respectively on two offset support rods symmetrically on either side of the plane passing through the mandrel axes, at a sufficient distance from it to allow the winding of a coil on each mandrel up to a maximum radius corresponding to the distance between the central axis and the axis of the mandrel.
Dans ce cas, chaque tige d'appui forme une poutre s'étendant en porte-à-faux à partir du châssis tournant et ayant une section droite d'inertie suffisante pour résister aux efforts appliqués sur le mandrin par la bande sous traction.In this case, each support rod forms a beam extending cantilevered from the rotating frame and having a cross section of inertia sufficient to resist to the forces applied to the mandrel by the strip under traction.
De préférence, l'organe d'appui amovible comprend un contre-palier susceptible de s'engager, par déplacement axial relatif, sur un tourillon ménagé à l'extrémité du mandrin opposée au châssis tournant.Preferably, the removable support member comprises a counter bearing likely to engage, by displacement relative axial, on a pin at the end of the mandrel opposite to the rotating chassis.
Généralement, chaque mandrin est du type comprenant des segments déplaçables radialement sous l'action d'une tige de commande coulissant axialement dans un alésage de l'arbre du mandrin.Generally, each mandrel is of the type comprising segments which can be moved radially under the action of a control rod sliding axially in a bore of the mandrel shaft.
Dans ce cas, le tourillon de support du mandrin est avantageusement ménagé à l'extrémité de la tige de commande et peut s'engager de façon amovible, par déplacement axial de ladite tige, dans un logement correspondant au bras de support après la mise en place de ce dernier dans l'axe du mandrin.In this case, the mandrel support pin is advantageously provided at the end of the control rod and can engage removably, by axial displacement of said rod, in a housing corresponding to the arm of support after the installation of the latter in the axis of the mandrel.
Dans un autre mode de réalisation avantageux, l'organe d'appui amovible est constitué d'au moins deux mâchoires placées chacune à l'extrémité d'un bras monté pivotant sur une tige d'appui autour d'un axe parallèle à l'axe central, entre une position ouverte pour laquelle les deux mâchoires sont suffisamment écartées du mandrin pour permettre l'enlèvement de la bobine, et une position fermée pour laquelle les mâchoires sont resserrées sur l'extrémité du mandrin à la manière d'une pince.In another advantageous embodiment, the removable support member consists of at least two jaws each placed at the end of a mounted arm pivoting on a support rod about an axis parallel to the central axis, between an open position for which the two jaws are far enough apart from the mandrel to allow removal of the coil, and a closed position for which the jaws are tightened on the end of the mandrel in the manner of pliers.
De préférence, la bobineuse à deux mandrins est équipée de deux organes d'appui constitués chacun d'une paire de mâchoires et montés sur deux bras pivotants portant chacun deux mâchoires appartenant respectivement à chacun des deux organes d'appui de façon que l'un ou l'autre des deux mandrins soit supporté alternativement par pivotement des deux bras dans un sens ou dans l'autre, les deux mâchoires d'une paire étant en position fermée sur l'un des mandrins quand les deux mâchoires de l'autre paire sont écartées, en position ouverte, de part et d'autre de l'autre mandrin, de façon à permettre le déchargement de la bobine enroulée.Preferably, the two-winder mandrels is equipped with two support members each consisting of a pair of jaws and mounted on two swivel arms each carrying two jaws belonging respectively to each of the two support members so that one or the other of the two mandrels is supported alternately by pivoting the two arms in one direction or in the other, the two jaws of a pair being in closed position on one of the chucks when both the jaws of the other pair are spread apart, in position open on either side of the other mandrel, so that allow unloading of the wound reel.
L'invention couvre également diverses dispositions avantageuses, qui font l'objet des sous-revendications et sera mieux comprise par la description suivantes de certains modes de réalisation donnés à titre d'exemple et représentés sur les dessins annexés.The invention also covers various arrangements advantageous, which are the subject of the subclaims and will be better understood from the following description of some embodiments given by way of example and represented in the accompanying drawings.
La Figure 1 est une vue schématique de dessus d'une bobineuse à carrousel équipée d'un dispositif selon l'invention.Figure 1 is a schematic top view of a carousel winder equipped with a device according to the invention.
La Figure 2 est une vue schématique de face de la bobineuse de la Figure 1.Figure 2 is a schematic front view of the Figure 1 winder.
La Figure 3 représente, en vue de dessus, une autre disposition des bras de support.Figure 3 shows, in top view, another arrangement of support arms.
La Figure 4 est une vue de face d'un mode de montage des bras de support.Figure 4 is a front view of an assembly method support arms.
La Figure 5 montre schématiquement, les forces appliquées sur les mandrin dans trois positions successives du châssis tournant.Figure 5 shows schematically, the forces applied to the mandrel in three successive positions of the rotating chassis.
La Figure 6 montre schématiquement, en vue de face, un autre mode de réalisation de l'invention.Figure 6 shows schematically, in front view, another embodiment of the invention.
La Figure 7 est une vue en élévation d'un autre mode de réalisation. Figure 7 is an elevational view of another mode of achievement.
La Figure 8 est une vue de face du mode de réalisation de la figure 7.Figure 8 is a front view of the mode of realization of figure 7.
La Figure 9 est une vue de détail, en coupe axiale, d'un système d'engagement de l'organe d'appui amovible sur l'extrémité du mandrin.FIG. 9 is a detail view, in axial section, a system for engaging the removable support member on the end of the mandrel.
La Figure 10 et la Figure 11 montrent, en vue de face, deux autres modes de réalisation de l'invention.Figure 10 and Figure 11 show, in view of face, two other embodiments of the invention.
La Figure 12 montre les étapes de fonctionnement du mode de réalisation de la Figure 11.Figure 12 shows the operating steps of the embodiment of Figure 11.
Sur les Figures 1 et 2, on a représenté
schématiquement, en vue de dessus et en vue de face, une
bobineuse à carrousel, comprenant, de façon classique, un
châssis tournant 1 monté rotatif autour d'un axe central 10,
le châssis étant constitué, par exemple, d'un tambour
cylindrique roulant sur des galets écartés 11 montés
rotatifs sur un massif de fondation 12 ou un bâti fixe,
chacun autour d'un axe parallèle à l'axe central. Un moyen
de commande de rotation tel qu'un pignon 13 entraíné en
rotation et engrènant avec une couronne dentée non
représentée, ménagée sur la périphérie du tambour 1 permet
de faire tourner celui-ci autour de son axe 10.In Figures 1 and 2, there is shown
schematically, in top view and in front view, a
carousel winder, conventionally comprising a
revolving
Sur le châssis 1 sont montés deux mandrins
d'enroulement 21, 22 s'étendant en porte-à-faux à partir du
châssis 1 et sur un même côté de celui-ci. Chaque mandrin
21, 22 est monté sur un arbre 2a, 2b et peut être entraíné en
rotation autour d'un axe 20, 20' parallèle à l'axe 10 du
châssis tournant 1 au moyen, par exemple, d'un moteur
autonome 23, 23' monté dans le châssis 1. Le moteur de
rotation 23 peut être hydraulique ou électrique.On
Chaque mandrin est constitué, de façon classique,
d'un arbre 2 associé, comme indiqué sur la figure 9, à un
ensemble de segments adjacents 26 montés coulissants
radialement sur l'arbre 2 et actionnés par une tige 25
passant dans un alésage axial de l'arbre 2 et portant une
crémaillère qui commande l'expansion du mandrin par
écartement des segments pour l'accrochage et l'enroulement
de la bande, puis le resserrement des segments pour
permettre le retrait de la bobine, à la fin de
l'enroulement.Each mandrel is made, in a conventional manner,
a
Toutes ces dispositions sont bien connues et ne nécessitent pas une explication détaillée.All these provisions are well known and do not not require a detailed explanation.
D'une façon générale, le châssis tournant permet de
placer chacun des deux mandrins successivement dans une
première position A de démarrage de l'enroulement puis dans
une seconde position B d'enroulement complet et d'extraction
de la bobine. les deux positions A et B sont
diamétralement opposées, de façon que, l'un des mandrins 21
soit dans la position A de démarrage lorsque l'autre mandrin
22 est dans la position B d'extraction de la bobine.Generally speaking, the rotating chassis allows
place each of the two mandrels successively in a
first winding start position A then in
a second position B for complete winding and extraction
of the coil. the two positions A and B are
diametrically opposite, so that one of the
Comme on l'a indiqué plus haut, dès la fin de
l'enroulement d'une bobine 3 sur le mandrin 22 après
cisaillement de la bande, il est possible, dans la position
A, de fixer sur le mandrin 21 l'extrémité 31 de la bande
placée en amont de la ligne de cisaillement et constituant
la tête de la bande suivante et de commander la rotation du
mandrin 21 au moyen du moteur 23 correspondant pour démarrer
l'enroulement de la bobine suivante 30 pendant le temps
nécessaire à l'extraction de la bobine 3 enroulée sur le
mandrin 22 en position B.As indicated above, at the end of
the winding of a
Pour le démarrage de l'enroulement, on utilise avantageusement un enrouleur E de type connu représenté schématiquement sur la Figure 12 et qui est placé, après le début de l'enroulement, dans une position écartée ne gênant pas la rotation du châssis tournant.For starting the winding, we use advantageously a reel E of known type shown schematically in Figure 12 and which is placed after the beginning of the winding, in an open position which does not interfere not the rotation of the rotating chassis.
Pour permettre l'extraction de la bobine, l'arbre 2
de chaque mandrin est encastré dans le châssis 1 à son
extrémité tournée vers celui-ci et s'étend ainsi en porte-à-faux
en supportant le poids de la bobine 3.To allow the extraction of the coil, the
Cependant, pendant l'enroulement, l'extrémité 24 de
l'arbre 2 du mandrin opposée au châssis 1 peut, selon
l'invention, s'appuyer de façon amovible sur le massif de
fondation 12 ou sur un bâti fixe, par l'intermédiaire d'un
organe d'appui rotatif 4.However, during winding, the
Dans un premier mode de réalisation de l'invention,
représenté sur la Figure 1, l'organe d'appui 4 comprend un
contre-palier 40 monté à l'extrémité d'un bras de support 41
qui, à son autre extrémité, est monté sur l'extrémité d'un
arbre central 5 centré sur l'axe central 10 et dont
l'extrémité opposée 51 est encastrée dans le châssis
tournant 1.In a first embodiment of the invention,
shown in Figure 1, the
De plus, le bras de support 41 est articulé sur
l'extrémité libre 52 de l'arbre central 5 autour d'un axe 42
perpendiculaire à l'axe central 10 de façon à permettre une
rotation de 180° du bras de support 41 avec le contre-palier
4a Ce dernier est, d'autre part, agencé de façon que ses
deux faces latérales 43, 43' puissent s'engager de manière
amovible sur un tourillon ménagé à l'extrémité 24 de l'arbre
2 du mandrin.In addition, the
De la sorte, à la fin de l'enroulement de la bobine
3 et après le cisaillage de la bande, il est possible de
commander immédiatement une rotation de 180° du bras de
support 41 autour de son axe 42 pour dégager le contre-palier
40 du mandrin 22 portant la bobine enroulée 3 et
l'engager, par sa face opposée 43', sur le tourillon
placé à l'extrémité 24' du mandrin 21 se trouvant dans la
position d'attente A.So, at the end of the reel winding
3 and after shearing the strip, it is possible to
immediately order a 180 ° rotation of the
La rotation du bras 41 peut être commandée par des
moyens quelconques, faciles à concevoir et portés par
l'arbre central 5, par exemple, une crémaillère 53 actionnée
par un vérin 54 et engrènant sur un pignon centré sur l'axe
42 et solidaire en rotation du bras 41. The rotation of the
De même, le contre-palier 40 peut être équipé, sur
ses deux faces latérales 43, 43', de deux roulements accolés
s'engageant, dans un sens ou dans l'autre, sur l'un ou
l'autre des tourillons avec un jeu permettant la
rotation du bras 41.Similarly, the counter-bearing 40 can be equipped, on
its two lateral faces 43, 43 ', of two contiguous bearings
committing, in one way or the other, to one or
the other of the journals with a clearance allowing the
Cette opération peut être réalisée pendant le temps
nécessaire à l'engagement de la tête 31 de la bande de la nouvelle
bobine sur le mandrin 21. De cette façon, dès le début de
l'enroulement, le mandrin 21 est supporté, à son extrémité
24', par l'organe d'appui 4.This operation can be carried out during the time
necessary for the engagement of the
L'effort de traction appliqué sur la bande pour
permettre l'enroulement de celle-ci n'entraíne donc pas de
flexion du mandrin 21 qui est maintenu à ses deux extrémités
respectivement par le châssis tournant 1 et par l'organe
d'appui 4 et la réaction correspondante est transmise au
massif de fondation par le bras 41, l'arbre central 5 et le
châssis 1.The tensile force applied to the strip for
allow the winding thereof does not result in
bending of the
L'arbre central 5 qui est encastré, par son
extrémité 51, sur le châssis 1 peut avoir la rigidité
nécessaire pour encaisser cette réaction. Cependant, il est
préférable que l'extrémité opposée 52 de l'arbre central 5
prenne appui directement sur le massif de fondation, par
exemple au moyen d'un contre-palier 55 qui peut s'engager de
façon amovible sur l'extrémité 52 de l'arbre 5, le contre-palier
55 étant porté, à cet effet, par un bras de support
56, par exemple de la façon représentée sur la Figure 2.The
Pour ne pas gêner la rotation du bras de support 41,
le bras 56 portant le contre-palier 55 et prenant appui sur
le massif de fondation 12, est monté rotatif autour d'un axe
57 écarté de l'axe central 10 et de l'axe 20 du mandrin 21.In order not to hinder the rotation of the
De la sorte, après enroulement complet de la bobine
3 sur le mandrin 22, on peut tout d'abord écarter le bras 56
et le contre-palier 55 par rotation autour de l'axe 57, puis
commander la rotation du bras de support 41 de façon que
l'organe d'appui 4 vienne s'engager sur l'extrémité 24' du
mandrin 21 en position d'attente A. Le contre-palier 55 peut
alors être ramené sur l'extrémité 52 de l'arbre central 5
par rotation du bras 56.In this way, after complete winding of the
Comme on l'a indiqué, le bras de support 41 est
monté pivotant autour de l'axe 42, sur l'extrémité 52 de
l'arbre central 5 et ce dernier peut être solidarisé en
rotation avec le châssis tournant 1 de façon à tourner avec
celui-ci lorsque l'on fait passer l'arbre 21 de la position
de démarrage A à la position d'enroulement complet B.As indicated, the
On voit que, pendant toute cette rotation, l'organe
d'appui 4 reste engagé sur le tourillon du mandrin 21 et
permet donc à celui-ci de supporter l'effort de traction
appliqué par la bande sans risque de flexion du mandrin 21,
la réaction étant reprise par l'arbre central 5.We see that, during this whole rotation, the
Cependant, dans une disposition plus perfectionnée
représentée schématiquement sur les Figures 1 et 2, l'arbre
central 5 est monté rotatif autour de l'axe 10 sur le
châssis tournant 1, de façon à permettre un glissement
angulaire et est associé à un moteur couple 61, calé sur un
prolongement 6 de l'arbre 5 et permettant d'appliquer sur
celui-ci un couple de rotation.However, in a more sophisticated arrangement
shown schematically in Figures 1 and 2, the tree
central 5 is rotatably mounted around
Comme on l'a indiqué schématiquement sur la Figure
2, pour assurer un enroulement correct de la bande 32 sur le
mandrin 21, en formant une bobine 30, la bande 32 est
soumise à effort de traction T dont la distance à l'axe de
rotation 20 augmente progressivement, ainsi que le poids P
de la bobine 30 qui s'ajoute au poids propre du bras 41.As shown schematically in Figure
2, to ensure correct winding of the
La résultante des efforts ainsi appliqués sur
l'extrémité du bras 41 exerce donc, sur celui-ci, un couple
de rotation variable.The result of the efforts thus applied to
the end of the
Selon l'invention, le moteur couple 61 exerce sur
l'arbre central 5, un couple de compensation de sens
inverse, qui est réglé en permanence en fonction de la
longueur de bande enroulée et de l'orientation du brin tendu
32 de façon que la réaction appliquée sur le bras de support
41 qui est la résultante de l'effort de traction T appliqué
sur la bande et du poids de la bobine 30, passe sensiblement
par l'axe central 10.According to the invention, the
Sur la Figure 5 on a représenté, à titre d'exemple, trois étapes de fonctionnement.In Figure 5 there is shown, by way of example, three stages of operation.
La Figure 5a montre la position de démarrage pour laquelle la charge P appliquée sur l'axe du mandrin est relativement faible, par exemple une tonne. La traction appliquée peut être de l'ordre de 2,5 T. La résultante R, dirigée vers le haut, est compensée par une force opposée R' ayant une composante R'x reprise par le bras de support et une composante R'y reprise par l'application du couple. On voit que, dans cette position, le bras de support OA est soumis à une traction et le couple est appliqué dans le sens trigonométrique.Figure 5a shows the start position for which the load P applied to the axis of the mandrel is relatively small, for example a ton. Traction applied can be of the order of 2.5 T. The resulting R, directed upwards, is compensated by an opposite force R ' having an R'x component taken up by the support arm and a component R'y taken up by the application of the torque. We sees that, in this position, the support arm OA is subjected to traction and the torque is applied in the direction trigonometric.
Après le démarrage de l'enroulement, on commande la rotation du châssis tournant. Dans la position intermédiaire représentée sur la figure 5b, la charge appliquée P peut être de l'ordre de 20 T et la traction T d'environ 7 T, l'échelle de représentation des efforts étant modifiée.After starting the winding, control the rotation of the rotating chassis. In the middle position shown in FIG. 5b, the applied load P can be of the order of 20 T and the traction T of approximately 7 T, the scale of representation of the forces being modified.
La résultante R est dirigée vers le bas et la charge P est reprise essentiellement par le bras de support OA qui est comprimé. Le couple est alors dirigé dans le sens négatif, opposé à l'effort de traction.The resultant R is directed downwards and the charge P is mainly taken up by the support arm OA which is compressed. The couple is then directed in the direction negative, opposite to the tensile force.
La Figure 5c correspond à la position de déchargement après enroulement complet. La charge P peut être de 30 T, la traction étant de 15 T. Le couple est de nouveau appliqué dans le sens positif et compense essentiellement la charge P.Figure 5c corresponds to the position of unloading after complete winding. The charge P can be 30 T, the pull being 15 T. The torque is applied again in the positive direction and compensates essentially the charge P.
Grâce à l'application d'un couple variable sur le
bras de support 41, le moment de flexion appliqué par la
bande est réduit au minimum, le bras de support n'étant
soumis, en pratique, qu'à des efforts de traction ou de
compression.By applying a variable torque to the
Il peut être nécessaire, cependant, de solidariser
en rotation l'arbre central 5 avec le châssis tournant 1.
C'est le cas, par exemple, lorsque la traction entre la
dernière cage de laminoir et la bobineuse n'est pas
appliquée ou peut être perturbée, en particulier après la
coupe d'une fin de bobine et lors de l'amorçage de la bobine
suivante.It may be necessary, however, to secure
in rotation the
C'est pourquoi, il est avantageux de monter sur le
châssis 1 un frein 60 susceptible de bloquer la rotation de
l'arbre 5. De la sorte, la bobineuse peut fonctionner, soit
avec application d'un couple de compensation modulé, soit
avec solidarisation de l'arbre central.This is why it is advantageous to get on the
chassis 1 a
Dans le mode de réalisation des Figures 3 et 4, les
deux mandrins 21, 22 sont associés, respectivement, à deux
organes d'appui 4a, 4b montés chacun à l'extrémité d'un bras
de support 41a, 41b articulé sur l'extrémité de l'arbre
central 5 autour d'un axe (40a,40b) perpendiculaire à l'axe central
10. Par exemple, comme le montrent les Figures 3 et 4, les
deux bras de support 41a, 41b peuvent être articulés sur une
pièce 44 formant un noyau qui est claveté sur l'extrémité 52
de l'arbre central 5 de façon à tourner avec celui-ci.
Chaque bras 41a, 41b peut être associé à un vérin
hydraulique rotatif 45a, 45b qui commande la rotation du
bras autour de son axe.In the embodiment of Figures 3 and 4, the
two
Dans ce cas, le contre-palier 40 placé à l'extrémité
du bras 41a, 41b est aménagé de façon à pouvoir s'engager
dans un seul sens sur l'extrémité 24 du mandrin, par
rotation autour de son axe.In this case, the counter bearing 40 placed at the
De préférence, comme l'indique la figure 3, le
contre-palier 55 de support de l'arbre central 5 est monté à
l'extrémité d'une tige 5' placée dans le prolongement de
l'arbre 5 de façon à permettre la rotation de l'un ou
l'autre des deux bras 41a, 41b pour le dégagement de
l'organe d'appui 4a, 4b correspondant. Dans ce cas, le
contre-palier 55 ne gêne pas le déchargement de la bobine et
peut être monté sur un support fixe prenant appui sur le
massif de fondation 12.Preferably, as shown in Figure 3, the
counter-bearing 55 for supporting the
L'arbre central 5 doit avoir une section minimale
assurant une rigidité suffisante pour supporter la réaction
des mandrins. Il en résulte que le diamètre maximal de la
bobine que l'on peut enrouler sur chaque mandrin est limité
à la distance entre l'axe 20 du mandrin et la périphérie de
l'arbre 5.
Pour augmenter ce diamètre maximal, on peut utiliser
la disposition représentée schématiquement sur la Figure 6
et dans laquelle la réaction est encaissée par deux tiges 7,
7' qui s'étendent en porte-à-faux à partir du châssis
tournant 1 et sont écartées symétriquement de part et
d'autre du plan P' passant par les axes des deux mandrins.To increase this maximum diameter, you can use
the arrangement shown schematically in Figure 6
and in which the reaction is collected by two
Dans ce cas, chaque bras de support 41 portant un
organe d'appui 4 est constitué de deux branches 45, 45'
articulées respectivement sur les deux tiges d'appui 7, 7'
autour d'axes 46, 46' qui sont alignés et perpendiculaires
au plan P' passant par les axes des deux mandrins.In this case, each
Les deux tiges 7, 7' forment chacune une poutre
encastrée dans le châssis 1 et s'étendant en porte-à-faux.
Elles doivent donc présenter, en section droite, une inertie
suffisante pour résister aux efforts appliqués sur le
mandrin par la bande 32 sous traction.The two
Pour permettre l'enroulement de chaque bobine
jusqu'à un diamètre maximal, chaque tige 7, 7' doit
s'inscrire dans l'espace limité par les deux cercles centrés
sur les axes 20, 20' des mandrins et ayant un rayon égal à
la distance entre l'axe 20 du mandrin et l'axe central 10.
De préférence, chaque tige 7, 7' présente une section
sensiblement triangulaire et est limitée par des faces
incurvées en forme de secteurs circulaires centrés sur les
axes 20 et 20'.To allow the winding of each coil
up to a maximum diameter, each
Par ailleurs, dans les modes de réalisation décrits
jusqu'à présent, chaque bras de support 41 est articulé
autour d'un axe perpendiculaire à l'axe central 10 et vient
se placer dans une position parallèle à cet axe pour
permettre le déchargement de la bobine enroulée.Furthermore, in the embodiments described
until now, each
Cependant, le dégagement de l'organe d'appui 4 peut
aussi s'effectuer par pivotement autour d'un axe parallèle à
l'axe central 10, l'organe d'appui 4 restant alors dans un
plan perpendiculaire à cet axe.However, the release of the
Par exemple, dans la disposition représentée sur la
figure 7, la bobineuse est équipée de deux organes d'appui
4a, 4b portés respectivement par les extrémités de deux bras
41a, 41b qui sont montés pivotants sur l'extrémité d'un
arbre central 5, autour de l'axe 10 de celui-ci.For example, in the arrangement shown on the
Figure 7, the winder is equipped with two
Comme le montre schématiquement la figure 8, qui est
une vue de face de la bobineuse, chaque bras 41a, 41b peut
être associé à un secteur denté 61' sur lequel engrène un
pignon fixe 62 entraíné en rotation par un mécanisme non
représenté qui peut avantageusement être monté dans un
organe de support fixe 56' portant un palier de centrage de
l'extrémité de l'arbre 5 opposée au châssis tournant 1,
l'organe de support fixe 56' pouvant être simplement fixé
sur le bâti ou le massif de fondation 12.As shown schematically in Figure 8, which is
a front view of the winder, each
Ainsi, comme le montre la figure 8, chaque organe
d'appui 4 peut être placé, par simple rotation du bras de
support autour de l'axe 10, soit dans l'alignement de l'axe
d'un mandrin, soit dans une position écartée C' pour
laquelle le bras de support 41 est, par exemple,
perpendiculaire au plan passant par les axes des mandrins
21, 22.So, as Figure 8 shows, each
Pour permettre l'engagement et le dégagement de
l'organe d'appui 4, ce dernier comprend avantageusement un
contre-palier 40 porté par une pièce 47 montée coulissante
axialement sur l'extrémité du bras de support 41 qui porte
un organe 48 de commande du coulissement, par exemple un
vérin ou un système à vis-écrou.To allow the engagement and release of
the
Toutefois, comme on l'a indiqué précédemment, un mandrin d'enroulement est généralement constitué d'un ensemble de segments montés coulissants radialement sur un arbre de rotation et dont on peut commander l'expansion ou le rétreint au moyen d'une tige de commande coulissable axialement. However, as noted earlier, a winding mandrel usually consists of a set of segments mounted to slide radially on a rotation shaft and whose expansion can be controlled or shrinking it by means of a sliding control rod axially.
C'est pourquoi, dans une autre disposition
avantageuse représentée sur la figure 9, l'organe d'appui 4
comprend un contre-palier 40 qui est peut être monté sur
l'extrémité 27 de la tige d'expansion 25 et vient s'engager
dans un logement correspondant 47' ménagé à l'extrémité du
bras de support 41, lorsque l'on fait coulisser axialement
la tige de commande 25 pour déterminer l'expansion du
mandrin. Inversement, à la fin de l'enroulement d'une
bobine, la tige de commande est reculée pour déterminer le
rétreint du mandrin et, en même temps, le contre-palier 40
est dégagé du logement 47', ce qui permet le pivotement du
bras 41 dans la position écartée C'.This is why, in another provision
advantageous shown in Figure 9, the
Bien entendu, l'invention ne se limite pas aux détails des modes de réalisation qui viennent d'être décrits, d'autres dispositions et des moyens équivalents pouvant être employés, sans s'écarter du cadre de protection défini par les revendications, pour assurer, selon l'invention, un support permanent des mandrins.Of course, the invention is not limited to details of the embodiments which have just been described, other provisions and equivalent means can be used, without departing from the protective framework defined by the claims, to ensure, according to the invention, a permanent support for the mandrels.
En particulier, le contre-palier qui constitue
l'organe d'appui amovible, peut être formé de deux demi-coussinets
ménagés sur deux mâchoires mobiles susceptibles
de se resserrer, à la manière d'une pince sur l'extrémité 24
de l'arbre du mandrin, ou bien de s'écarter de celui-ci pour
permettre le déchargement de la bobine enroulée.In particular, the counter-bearing which constitutes
the removable support member, may be formed by two half-bearings
formed on two movable jaws likely
to tighten, like a clamp on the
A cet effet, les deux mâchoires de chaque organe d'appui sont portées par deux bras pivotants et, dans le cas où l'on utilise deux organes d'appui, chacun des deux bras peut avantageusement porter deux mâchoires appartenant, respectivement, à chacun des deux organes d'appui.For this purpose, the two jaws of each organ support are carried by two pivoting arms and, in the case where two support members are used, each of the two arms can advantageously carry two jaws belonging, respectively, to each of the two support members.
Dans le mode de réalisation représenté sur la figure
10, par exemple, l'organe d'appui 8 est constitué de deux
mâchoires 8a, 8b placées chacune à une extrémité d'un bras
81a, 81b qui porte, à son autre extrémité, une mâchoire 8'a,
8'b de l'autre organe d'appui 8'. Les deux bras 81a, 81b,
sont articulés, dans leur partie centrale, sur un arbre
central 5, autour d'un pivot commun 82 centré sur l'axe 10
du châssis tournant 1, les centres des mâchoires étant
placés à la même distance de l'axe central 10 que les axes
des deux mandrins 21, 22.In the embodiment shown in the figure
10, for example, the
De plus, les mâchoires portées par chaque bras 81
sont décalées latéralement par rapport au pivot 82 de telle
sorte que les plans P1, P2 passant par l'axe central 10 et
les centres des mâchoires 8a, 8'a forment un angle obtus.In addition, the jaws carried by each arm 81
are offset laterally with respect to pivot 82 of such
so that the planes P1, P2 passing through the
Chacun des deux bras 81a, 81b, est muni d'un secteur
denté 61' sur lequel engrène un pignon 62 actionné par un
mécanisme monté sur le châssis tournant 1 et pouvant faire
tourner le bras 81 dans un sens ou dans l'autre.Each of the two
Ainsi, par rotation des deux bras 81a, 81b, les deux
mâchoires 8a, 8b, viennent se resserrer, à la manière d'une
pince, sur l'extrémité 24 de l'arbre de l'un des mandrins 21
tandis que les deux autres mâchoires 8'a, 8'b s'écartent de
l'autre mandrin 22 d'une distance suffisante pour permettre
l'enlèvement de la bobine enroulée.Thus, by rotation of the two
Comme dans le cas de la figure 7, les bras 81 de
support des mâchoires restent dans un plan perpendiculaire à
l'axe central 10. L'arbre central 5 peut donc, soit
s'étendre en porte-à-faux à partir du châssis tournant 1,
soit reposer sur un support fixe par son extrémité opposée
au châssis 1.As in the case of FIG. 7, the arms 81 of
support of the jaws remain in a plane perpendicular to
the
Dans le mode de réalisation de la figure 11, les
bras 83a, 83b, de support des organes d'appui 8, 8' sont
articulés, respectivement, sur des pivots 82a, 82b à axes
parallèles à l'axe central 10 et ménagés sur les extrémités
de deux tiges 7a, 7b, formant chacune une poutre d'appui,
d'une façon analogue au mode de réalisation de la figure 6.In the embodiment of FIG. 11, the
Chaque organe d'appui 8, 8' est encore constitué de
deux demi-coussinets ménagés sur deux mâchoires 8c, 8d
portées, respectivement, par les deux bras 83a, 83b. Dans ce
cas, cependant, chacun des deux bras 83a, 83b s'étend entre
les deux mandrins 21, 22 et présente une forme en secteur
angulaire monté pivotant, à son sommet, sur une tige 7a, 7b
et portant deux mâchoires écartées, respectivement 8c, 8'c
et 8d 8'd, dont les centres sont placés sur un cercle centré
sur l'axe du pivot correspondant 82a, 82b et passant par les
axes des deux mandrins 21, 22.Each
De la sorte, par rotation en sens contraire des deux
bras 83a, 83b, une première paire de mâchoires 8c, 8d vient
se resserrer sur l'extrémité 24 d'un premier mandrin 21,
alors que les deux autres mâchoires 8'c, 8'd sont
suffisamment écartées du second mandrin 22 pour permettre le
déchargement de la bobine.In this way, by rotation in opposite direction of the two
Par des rotations en sens inverse, la seconde paire
de mâchoires 8'c, 8'd vient se resserrer sur le second
mandrin 22 alors que les deux autres mâchoires 8c, 8d
s'écartent de part et d'autre du premier mandrin 21.By reverse rotations, the second pair
of jaws 8'c, 8'd tightens on the
Chacun des deux bras 83a, 83b est muni d'un secteur
denté 63a, 63b centré sur l'axe de la tige d'appui
correspondante 7a, 7b et sur lequel engrène un pignon 64a,
64b centré sur l'axe de l'autre tige d'appui 7b, 7a.Each of the two
Sur la figure 12, on a représenté, trois étapes de fonctionnement d'une bobineuse de ce type.In FIG. 12, three stages of operation of a winder of this type.
Sur la figure 12a, le mandrin 21 est dans la
position de démarrage A. Les deux mâchoires 8c, 8d sont
resserrées sur l'extrémité de l'arbre du premier mandrin 21
alors que les deux autres mâchoires 8'c, 8'd sont écartées
du second mandrin 22 qui se trouve dans la position B de
déchargement, de façon à permettre l'enlèvement de la bobine
3 complètement enroulée. Un enrouleur E de type connu est
appliqué sur le mandrin 21 pour faciliter l'accrochage de la
bande 32 et le démarrage de l'enroulement.In FIG. 12a, the
La figure 12b montre une position intermédiaire du
châssis tournant. Le premier mandrin 21 sur lequel
s'effectue l'enroulement de la bande 32 est supporté par les
deux bras 83a, 83b, l'autre mandrin 22 étant déchargé.Figure 12b shows an intermediate position of the
rotating chassis. The
La figure 12c montre la fin de l'enroulement, le
premier mandrin 21 se trouvant dans la position de
déchargement B. Il peut être avantageux de commander
séparément les rotation des deux bras 83a, 83b. Par exemple,
sur la figure 12c, le bras de support 83b a déjà été écarté
pour venir placer la mâchoire 8'c sur le second mandrin 22
qui se trouve en position de démarrage A, alors que le
mandrin 21 peut être encore supporté par le bras 83a jusqu'à
la prise en charge de la bobine.Figure 12c shows the end of the winding, the
On fait ensuite pivoter le bras 83a pour que le
mandrin 22 soit maintenu par les deux mâchoires resserrées
8'c, 8'd.We then rotate the arm 83a so that the
Le dispositif représenté sur la figure 10 fonctionne d'une façon analogue.The device shown in Figure 10 works analogously.
Les signes de référence insérés après les caractéristiques techniques mentionnées dans les revendications, ont pour seul but de faciliter la compréhension de ces dernières et n'en limitent aucunement la portée.The reference signs inserted after the technical characteristics mentioned in the claims are intended only to facilitate the understanding of them and in no way limit them the scope.
Claims (22)
- An installation for winding a metal web into a coil, comprising a revolving chassis (1) mounted to rotate around a central axis (10) on a fixed frame (12), two extendable mandrels (21, 22) mounted to rotate on the revolving chassis (1) on either side of the central axis (10), each around an eccentric axis (20, 20'), parallel to the central axis and extending each cantilever on the same side of the revolving chassis (1), from a first embedded end on the chassis (I) to a second opposite end (24), means (23, 23') for selective control of the rotation of each mandrel (21, 22) around its axis for winding the metal web, means (13) for controlling the rotation of the revolving chassis (1) around its central axis (10), for selective placement of a first mandrel (21) in a first position (A) in order to attach the end (31) of a metal web (32) and to start the winding process by stretching the web, then the passage of the first mandrel (21) from the first position (A) to a second position (B), diametrically opposite, for unloading the wound coil (3), with simultaneous return of the second unloaded mandrel (22) from said second unloading position (B) to said first starting position (A),
characterised in that, the first mandrel (21) being brought into rotation around its axis (20) for winding the web during the rotation of the revolving -chassis from the first starting position (A) to the second unloading position (B), while maintaining a traction load (T) on the web, the installation comprises a means (5, 7, 41) for supporting permanently the free end (24) of the mandrel (21) during the winding process, capable of rotating with the chassis (1) over a rotational angle of 180° between the first, starting position (A) and the second position (B) for complete winding of the coil (3) and unloading while absorbing the increasing weight of the coil (3) and the traction load (T) applied by the web, said permanent supporting means comprisingat least one bearing rod (5, 7) extending along a direction parallel to the central axis (10), at least over a length greater than the width of a coil (3), between an end (51) embedded in the revolving chassis (1) and an opposite end (52);at least a supporting arm (41, 81, 83) having a first end hinged around an axis (42) on the opposite end (52) of the bearing rod (5, 7) and a second end (47) carrying a removable bearing member (4, 8),means for controlling the rotation (53, 54; 61', 62') of at least one supporting arm (41, 81, 83) around its axis (42) between two positions, respectively, a first engagement position of the removable bearing member (4, 8) on the second free end (24) of one of the mandrels (21, 22) and a second disengagement position wherein the supporting arm (41, 81, 83) is sufficiently spaced apart from the mandrel (21, 22) to enable unloading of a wound coil (3) having a maximum diameter of the same order as the distance between the axis (20) of the mandrel (21, 22) and the central axis (10) of the chassis (1),means for rotational interconnection of the supporting arm (41, 81, 83) and of the bearing rod (5, 7) with the revolving chassis (1) between the first, starting position (A) for which the removable bearing member (4, 8) engages on the free end (24) of the mandrel (21) at the beginning of the winding process and the second, unloading position (B) for which the removable bearing member (4, 8) is disengaged and the supporting arm (41) is moved away. - A winding installation according to claim 1, characterised in that the supporting arm (41) is hinged on at least one bearing rod (5, 7) around an axis perpendicular to the central axis (10) in order to be able to pivot between the engagement position of the bearing member (4,) on the end (24) of the mandrel (21) and a position which is spaced apart far enough to enable the unloading process of a wound coil (3).
- A winding installation according to claim 1, characterised in that the supporting arm (41, 81, 83) is hinged on at least one bearing rod (5, 7) around an axis parallel to the central axis (10) in order to be able to pivot between the engagement position of the bearing member (4, 8) on the end (24) of the mandrel (21) and a spaced apart position (C'), for which the supporting arm (41, 81, 83) is offset at an angle relative to the mandrels (21, 22) in order to clear said mandrels (21, 22) far enough so as not to disturb the unloading process of a coil (3) when wound completely.
- A winding installation according to any one of claims 2 and 3, characterised in that the supporting arm (41) is hinged on a single rod forming a bearing shaft (5) centred on the central rotational axis (10) of the revolving chassis.
- A winding installation according to claim 4, characterised in that the central bearing shaft (5) is embedded into the revolving chassis and extends cantilever up to its opposite end (52) whereon the supporting shaft (41) is hinged, whereas the central shaft (5) forms sufficiently resistant a beam to transmit to the fixed frame (12), via the revolving chassis (1), at least a portion of the loads applied to the winding mandrel (21).
- A winding installation according to claim 4, characterised in that the central bearing shaft (5) rests on the fixed frame (12), at its end (52) opposite to the revolving chassis (1), via a supporting member (56).
- A winding installation according to any one of claims 4, 5, 6, characterised in that the central bearing shaft (5) of the supporting arm (41) is mounted to rotate around the axis (10) on said revolving chassis (1) with possible angular sliding and is associated with means (61) for applying to the central shaft (5) a rotational torque around the central axis (10) adjusted so as to compensate for the weight of the coil (3) during the winding process and the torque resulting from the traction exerted on the web (32), so that the resultant of all the loads applied to the supporting arm (41) by the mandrel (21) during the winding process is exerted along a direction running substantially through the central axis (10) of the revolving chassis (1).
- A winding installation according to claim 7, characterised in that the central bearing shaft (5) is associated to a torque-motor (61) in order to compensate for the loads applied to said central shaft (5) and may be interconnected removably with the revolving chassis (1) by a brake (60).
- A winding installation according to any one of claims 2 and 3, characterised in that the arm supporting the bearing member (4) comprises two branches (45, 45') resting respectively on two rods (7, 7') embedded into the revolving chassis (1) and extending cantilever from said chassis, whereas each rod (7, 7') forms a beam having, as a straight section, sufficient inertia to sustain the loads applied to the mandrel by the web (32) under traction, whereby said rods (7, 7') are offset symmetrically on either side of the plane (P') running through the axes of both mandrels (21, 22), at sufficient distance from said plane to enable a coil (3) to be wound on each mandrel (21, 22) up to a maximum radius corresponding to the distance between the central axis (10) and the axis (20) of the mandrel (21, 22).
- A winding installation according to claim 9, characterised in that each bearing rod (7, 7') is limited on the central axis (10) side of the revolving chassis (1) by two faces turned respectively towards both mandrels (21, 22) and each tangent to a circle centred on the axis (20) of the corresponding mandrel and whereof the radius is equal, at the most, to the distance between the axis (20) of the mandrel (21) and the central axis (10) in order to enable the corresponding coil (3) to be wound completely.
- A winding installation according to one of the previous claims, characterised in that the removable bearing member (4) comprises a counter-bearing (40) centred on the axis (20) of the mandrel interposed between a journal provided at the end (24) of the mandrel (21, 22) opposite to the revolving chassis (1) and the end of the supporting arm (41) in a bearing position.
- A winding installation according to claim 11, characterised in that the supporting arm (41) is hinged around an axis (42, 46, 46') perpendicular to the central axis (10) and in that the counter-bearing (40) is provided in order to engage on the end (24) of the shaft (2a, 2b) of each mandrel (21, 22) and to disengage from said end by rotation of said supporting arm (41) around its axis (42).
- A winding installation according to claim 12, characterised in that it comprises a single supporting arm (41) associated to the same counter-bearing (40) having two opposite faces (43, 43') capable of engaging removably on the ends, respectively, of either shaft (2a, 2b) of the mandrels (21, 22).
- A winding installation according to claim 13, characterised in that the central bearing shaft (5) rests removably on the fixed frame (12) at its end (52) opposite the revolving chassis (1) via a supporting member (56) movable between a position for supporting the end of the central bearing shaft (5) and a spaced apart position enabling to move the supporting arm (41) of the bearing member (4) from one mandrel to the other (21, 22).
- A winding installation according to claim 12, characterised in that it comprises two supporting arms (41a, 41b) hinged on the central bearing shaft (5) and associated each to a mandrel (21, 22), whereas each arm (41a, 41b) carries a bearing member (4a, 4b) capable to engage removably on the end of the shaft (2a, 2b) of the corresponding mandrel (21, 22) and capable to pivot between a closed position for supporting the shaft (2a, 2b) of the corresponding mandrel (21, 22) and an open position, substantially in the extension of the central bearing shaft (5).
- A winding installation according to claim 15, characterised in that the central bearing shaft (5) is extended beyond the hinges (40a, 40b) of the supporting arms (41a, 41b) by a section (5') bearing upon the fixed frame (12) via a revolving bearing member (55) resting on a fixed support, spaced apart sufficiently from the hinges (40a, 40b) to enable to place each supporting arm (41a, 41b) in open position and to remove the coil (3) from the corresponding mandrel (21, 22).
- A winding installation according to claim 11, characterised in that the counter-bearing (40) is carried by a piece (47) mounted slidingly, parallel to the central axis (10), on the end of the supporting arm (41), the latter being provided with means (48) for controlling the sliding movement of said piece (47) for engaging or disengaging the counter-bearing (40).
- A winding installation according to claim 11, characterised in that each mandrel (21, 22) comprises an expansion control rod (25) movable axially for expanding or retracting the mandrel and in that the axial displacement of the control rod (25) determines, in the expansion direction, the engagement of the end (27) of the rod (25) in a corresponding housing (47') of the supporting arm (41) and, in the retraction position, the disengagement of said end (27), the latter resting while being able to rotate inside said recess (47').
- A winding installation according to claim 3, characterised in that the removable bearing member (8) is made of at least two jaws each placed at the end of an arm mounted to pivot on a bearing rod (5, 7) around an axis parallel to the central axis (10), between an open position for which both jaws (8a, 8b; 8c, 8d) are spaced apart sufficiently from the mandrel to enable removal of a coil (3) when wound completely, and a closed position, for which the jaws (8a, 8b; 8c, 8d) are tight on the end (24) of the mandrel, like a claw.
- A winding installation according to claim 19, characterised in that it comprises two bearing members (8, 8') each made of a pair of jaws (8a, 8b) (8'a, 8'b); (8c, 8d), (8'c, 8'd) and of two pivoting arms (81a, 81b); (83a, 83b) each carrying two jaws (8a, 8'a) (8b, 8'b); (8c, 8'c) (8d, 8'd); belonging respectively to each of both bearing members (8, 8') so that either of both mandrels (21, 22) is supported altemately by pivoting both arms in one direction or the other, whereas both jaws (8a, 8b); (8c, 8d) of a pair are in closed position on one of the mandrels (21) when both jaws (8'a, 8'b); (8'c, 8'd) of the other pair (8') are spaced apart, in open position, on either side of the other mandrel (22).
- A winding installation according to claim 20, characterised in that both supporting arms (81a, 81b) are hinged in their central portion on a central bearing shaft (5) around a pivot (82) centred on the axis (10) of the chassis (1) and carry at two opposite ends, two jaws (8a, 8'a) (8b, 8'b) of two different pairs, which are centred respectively on axes placed at the intersection of a cylindrical surface centred on the axis (10) of the pivot and running through the axes of both mandrels (21, 22), with respectively two planes (P1, P2) running through the pivoting axis (10) and offset at an angle, in order to form two claws whereof the first one is open when the other is closed.
- A winding installation according to claim 20, characterised in that both supporting arms (83a. 83b) are each hinged around a pivot (82a, 82b) respectively on two bearing rods (7, 7') spaced symmetrically from the central axis (10) in a plane perpendicular to the plane running through the axes of both mandrels (21, 22), and extending towards one another while running between both mandrels (21, 22), and in that each supporting arm (83a, 83b) carries two spaced apart jaws (8c, 8'c) (8d, 8'd), belonging to two different bearing members, centred respectively on axes placed at the intersection of a cylindrical surface centred on the corresponding pivoting axis (82a, 82b) and running through the axes of both mandrels (21, 22), with respectively two planes running through the axis of the pivot (82a, 82b) and delineating between them an acute angle, whereas the angles of both arms (83a, 83b) are equal so that, by rotation of both arms (83a, 83b) towards one another, both jaws (8c, 8d) of a first bearing member (8) are tightened on a first mandrel (21) while the jaws (8'c, 8'd) of the second bearing member (8') are open on either side of the second mandrel (22), and reciprocally.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9705409 | 1997-04-30 | ||
FR9705409A FR2762831B1 (en) | 1997-04-30 | 1997-04-30 | TWO CHUCK COILER FOR TAPE WINDING |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0875476A1 EP0875476A1 (en) | 1998-11-04 |
EP0875476B1 true EP0875476B1 (en) | 2003-08-27 |
Family
ID=9506508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400995A Expired - Lifetime EP0875476B1 (en) | 1997-04-30 | 1998-04-23 | Winder with two mandrels for winding a web |
Country Status (12)
Country | Link |
---|---|
US (1) | US6065713A (en) |
EP (1) | EP0875476B1 (en) |
JP (1) | JPH10310294A (en) |
KR (1) | KR100533340B1 (en) |
CN (1) | CN1093076C (en) |
AT (1) | ATE248115T1 (en) |
CZ (1) | CZ289414B6 (en) |
DE (1) | DE69817437T2 (en) |
ES (1) | ES2205400T3 (en) |
FR (1) | FR2762831B1 (en) |
RU (1) | RU2208569C2 (en) |
SK (1) | SK54198A3 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
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DE19704555A1 (en) * | 1997-02-06 | 1998-08-13 | Windmoeller & Hoelscher | Device for winding web material |
EP0996511B1 (en) * | 1997-07-15 | 2001-10-17 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Coiling machine for hot rolled stock such as strip or sheet and relative coiling method |
KR100377293B1 (en) | 1997-11-27 | 2003-03-26 | 미츠비시 쥬고교 가부시키가이샤 | Strip plate winding-up device |
DE19758106C2 (en) * | 1997-12-17 | 2003-09-18 | Sms Demag Ag | Carousel reel with two reel mandrels |
KR100864440B1 (en) * | 2001-08-09 | 2008-10-20 | 주식회사 포스코 | Device for stopping and decelerating rotation of paper coil |
US20080054119A1 (en) * | 2006-08-17 | 2008-03-06 | Werner Mueller | Winding machine for winding a web of material divided into strips by longitudinal cuts |
EP2039634B1 (en) * | 2007-09-20 | 2012-08-29 | Atlas Converting Equipment Limited | Web winders and methods of operating web winders |
CN101723199B (en) * | 2009-11-30 | 2012-05-09 | 宝利时(深圳)胶粘制品有限公司 | Full-automatic cutting apparatus for adhesive tape |
ITMI20100296A1 (en) * | 2010-02-24 | 2011-08-25 | Rotomac S R L | PROCEDURE AND MACHINE FOR THE REALIZATION OF ROLLS OF MATERIALS OF USE IN THE SHEET, PARTICULARLY ALUMINUM FOR FOOD APPLICATIONS, WITH A CILINDRICA CAVA SOUL. |
CN102180369B (en) * | 2011-03-31 | 2013-01-23 | 厦门亚太创新机器有限公司 | Separated roll-up device for plastic bags |
CN102513404A (en) * | 2011-12-20 | 2012-06-27 | 青岛云路新能源科技有限公司 | Strip coiling equipment |
ITMI20131574A1 (en) * | 2013-09-25 | 2015-03-26 | Colines Spa | GRIPPING UNIT AND SUPPORT OF A WINDING MANDREL IN A PLASTIC FILM WINDING MACHINE |
DE102014216221A1 (en) * | 2014-05-26 | 2015-11-26 | Sms Group Gmbh | Apparatus and method for winding a strip material |
CN104340722A (en) * | 2014-11-06 | 2015-02-11 | 四川省资阳市雅之江塑业有限公司 | Rotating station winding machine |
CN106143983B (en) * | 2016-08-12 | 2018-03-23 | 杭州鼎巅科技有限公司 | A kind of compact holds the mechanical structure and application method of wrapping machine |
DE102017205355A1 (en) | 2016-09-02 | 2018-03-08 | Sms Group Gmbh | Support device for a coiler and coiler |
DE102017130895B4 (en) * | 2017-12-21 | 2023-06-29 | Lisa Dräxlmaier GmbH | Winding device and method for fully automated wrapping of a bundle of wires with an adhesive tape |
CN108313831A (en) * | 2018-03-09 | 2018-07-24 | 中天宽带技术有限公司 | A kind of foldable type reel |
CN108750793A (en) * | 2018-06-27 | 2018-11-06 | 长沙跃奇节能电气设备有限公司 | Take-up and lead drying system |
CN109095264A (en) * | 2018-08-15 | 2018-12-28 | 中山市铧禧电子科技有限公司 | The belt cutting device of adjusting cutting angle |
CN109483439B (en) * | 2018-12-17 | 2023-10-10 | 中国重型机械研究院股份公司 | Feeding self-locking type positioning and locking mechanism and using method thereof |
CN110076841A (en) * | 2019-04-26 | 2019-08-02 | 天津市四方圆包装制品有限公司 | Adhesive tape Pipe Cutting processing method and adhesive tape production paper tube cutting apparatus |
KR102147045B1 (en) * | 2020-02-24 | 2020-08-21 | 주식회사 삼영기계공업 | Winding and cutting device of plastic wrap |
CN113353681A (en) * | 2021-05-13 | 2021-09-07 | 浙江吉利控股集团有限公司 | Steel band winding device |
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US2707596A (en) * | 1954-03-19 | 1955-05-03 | Harry J Ehret | Heavy duty reel |
EP0857679A2 (en) * | 1997-02-06 | 1998-08-12 | WindmÀ¶ller & Hölscher | Device for winding a web of material |
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US2769600A (en) * | 1952-07-16 | 1956-11-06 | Paper Converting Machine Co | Web winding machine |
DE2437237C3 (en) * | 1974-08-02 | 1981-08-20 | Estel Hoesch Werke Ag, 4600 Dortmund | reel |
US4266735A (en) * | 1980-02-08 | 1981-05-12 | Magna-Graphics Corporation | Mandrel supports for automatic web rewinder |
GB8914482D0 (en) * | 1989-06-23 | 1989-08-09 | Bridges Geoffrey | Improvements in and relating to machines for forming rolls of plastics materials |
FR2727952A1 (en) * | 1994-12-09 | 1996-06-14 | Clecim Sa | Spool winding mechanism for metal laminates |
-
1997
- 1997-04-30 FR FR9705409A patent/FR2762831B1/en not_active Expired - Fee Related
-
1998
- 1998-04-23 DE DE69817437T patent/DE69817437T2/en not_active Expired - Lifetime
- 1998-04-23 CZ CZ19981249A patent/CZ289414B6/en not_active IP Right Cessation
- 1998-04-23 EP EP98400995A patent/EP0875476B1/en not_active Expired - Lifetime
- 1998-04-23 AT AT98400995T patent/ATE248115T1/en not_active IP Right Cessation
- 1998-04-23 ES ES98400995T patent/ES2205400T3/en not_active Expired - Lifetime
- 1998-04-27 US US09/066,982 patent/US6065713A/en not_active Expired - Lifetime
- 1998-04-27 SK SK541-98A patent/SK54198A3/en unknown
- 1998-04-29 RU RU98108889/12A patent/RU2208569C2/en not_active IP Right Cessation
- 1998-04-30 CN CN98107825A patent/CN1093076C/en not_active Expired - Fee Related
- 1998-04-30 JP JP10120637A patent/JPH10310294A/en not_active Withdrawn
- 1998-04-30 KR KR1019980015430A patent/KR100533340B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2707596A (en) * | 1954-03-19 | 1955-05-03 | Harry J Ehret | Heavy duty reel |
EP0857679A2 (en) * | 1997-02-06 | 1998-08-12 | WindmÀ¶ller & Hölscher | Device for winding a web of material |
Also Published As
Publication number | Publication date |
---|---|
CZ124998A3 (en) | 1999-05-12 |
ATE248115T1 (en) | 2003-09-15 |
FR2762831B1 (en) | 1999-07-16 |
US6065713A (en) | 2000-05-23 |
CN1203837A (en) | 1999-01-06 |
DE69817437T2 (en) | 2004-06-17 |
FR2762831A1 (en) | 1998-11-06 |
RU2208569C2 (en) | 2003-07-20 |
KR100533340B1 (en) | 2006-03-30 |
KR19980081844A (en) | 1998-11-25 |
DE69817437D1 (en) | 2003-10-02 |
CZ289414B6 (en) | 2002-01-16 |
CN1093076C (en) | 2002-10-23 |
EP0875476A1 (en) | 1998-11-04 |
SK54198A3 (en) | 1999-02-11 |
JPH10310294A (en) | 1998-11-24 |
ES2205400T3 (en) | 2004-05-01 |
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