DE69905410T2 - winder - Google Patents

Abstract

A reel-up in a paper machine in which the web is reeled onto reeling drums (4) provided with cores, said reel-up having an upper pair of parallel rails (21) extending from the downstream end of the reel-up to its upstream end to support a stock (15) of reeling drums provided with cores, and a handling station (54) for handling finished reels of paper (3), reeling drums (4) and cores (14), said handling station having a vertically movable lifting table (58) for receipt of a finished reel of paper, a device (60) for moving a reeling drum out from a reel of paper on the lifting table and for subsequently inserting the reeling drum into at least one core (14) on the lifting table, and a device for feeding cores (14) out onto the lifting table. According to the invention the handling station (54) is provided with a lifting device (84) comprising two lifting elements (85) arranged to be brought into engagement with a reeling drum provided with core(s) and situated on the lifting table, and to lift this and deliver it to the upper pair of rails. Actuators (90) are connected to the lifting elements to move them from the lifting table to the delivery point at the upper pair of rails. <IMAGE>

Description

The present invention relates to a reel-up in a paper machine for producing a paper web which is reeled up on reeling drums provided with cores to form rolls of paper, the reel-up having an upstream end and a downstream end and comprising:

- a lower pair of parallel rails extending from the upstream end to the downstream end for supporting a reeling drum, the opposite end portions of which are arranged to roll along the rails,

- an upper pair of parallel rails extending from the downstream end to the vicinity of the upstream end above and spaced from the lower pair of rails for supporting a supply of reeling drums provided with cores, the opposite end portions of the reeling drums being adapted to roll along the rails,

- a reeling station arranged immediately downstream of the upstream end in connection with the lower pair of rails for reeling the paper web onto the reeling drum,

- lowering devices which lower a reeling drum provided with a core(s) from the upper pair of rails (21) to the reeling station,

- a multi-function handling station located at the downstream end for handling finished rolls of paper, reel drums and cores, the handling station comprising:

- a vertically movable lifting table for picking up one finished roll of paper at a time,

- a device for moving a reel drum from a roll of paper located on the lifting table and for inserting the reel drum into a core or cores located on the lifting table and aligned with the drum moving device after the roll of paper has been removed from the lifting table, and

- a device for feeding cores out onto the lifting table,

- the multi-function handling station being provided with a lifting device having two lifting elements arranged to engage the end portions of a reel drum provided with a core(s) and located on the lifting table and to lift them and deliver them to the upper pair of rails, and actuators connected to the lifting elements to move them from the lifting table to the delivery point for the reel drum on the upper pair of rails.

Continuous reeling takes place at the reel-up on the paper machine and the roll of paper leaving the reel-up is usually called a machine reel. This may consist either of a single reel having a width corresponding to the total width of the machine or of several reels, the paper web being divided into one or more web sections which are individually reeled on cores on a reel-up drum provided with different cores. In order to achieve continuous production of paper reels, empty reel-up drums are continuously supplied from a supply of drums. This supply of drums is in close connection with the surface reel-up drum at the upstream end of the reel-up and is arranged at a height immediately above the reel-up production line in order to save space. The reel-up drums are supplied by the supply of drums with the help of lowering arms to the surface winding drum of the reel, where the process of winding the paper web into a finished paper roll begins again.

The stock of drums must be replenished when the reeling drums are used in the reel-up. In conventional reel-up machines, a manual system is still used to a large extent to return the reeling drum removed from the finished paper roll to the stock of reeling drums. This is achieved by pulling or pushing the reeling drum away from the paper roll with the aid of a drum moving device arranged at the downstream end of the reel-up. The reeling drum thus removed is then provided with one or more new cores and returns to the stock of drums. The cores have a comparatively very large diameter and a length, usually reaching several meters, and therefore cannot be moved manually to a large extent. They must therefore be transported to the reel-up with the aid of an overhead crane or other suitable transport device, such as a truck. The cored reel drum is lifted by an overhead crane to the reel stock located above the reel, with an operator first manually attaching the crane's gripping device to the selected reel drum and accompanying the reel drum along its travel path until it can be placed in the correct position in the reel stock. Alternatively, a second operator may be located above the reel stock to receive and disengage the raised reel drum. It should be readily understood that the manual handling of the reel drums described above is both time consuming and labor intensive and therefore costly. In addition, all manual work in the or close to the paper machine during operation, including the transport of heavy objects such as reel drums suspended from overhead cranes, always entails risks for the operator. Since the handling of the reel drums takes place inside the machine hall, the machine operators whose task it is to ensure the manual handling of the reel drums are exposed to various disadvantages in terms of risk of accidents, noise and other stressful situations, and furthermore, the manual hand-hooking of the reel drums is considered slow. It is therefore highly desirable to reduce the manual handling of the reel drums.

Document US-A-4 390 138 describes a reel which is essentially the same as the reel defined by the preamble of claim 1. The lifting device of the known reel has lifting elements and actuating members. However, the lifting elements are suspended from roller chains and are guided for vertical movement by guideways provided on the inner sides of the vertical frames. The lifting elements are thus arranged inside the reel for vertical movement between a lower position and an upper position by means of cylinders and the roller chains.

An object of the present invention is therefore to provide an improved reel which enables an extraordinary reduction in the manual handling of the reel drums.

The reel according to the present invention is characterized in that

- the lifting elements consist of lifting arms which are rotatably mounted on the reel on fixed bearing shafts which enable rotation from a lower retrieval position to an upper delivery position, and

- each of the pivotally mounted lifting arms has an outer lifting arm section, an inner lifting arm section and an inner bearing section, along which lifting arm sections the winding drum is intended to roll, the bearing section forming an actuating arm which is connected to one end of an actuating member, the other end of which is mounted on the upper rails or on a fastening element near the upper rails.

The invention provides a reel-up in which it is possible to move the reel-up drums in an automatic cycle, that is to say without manual assistance during the actual transport and without the assistance of external handling equipment and vehicles for transporting the reel-up drums in this cycle. The only manual assistance involves activating and deactivating the engagement between the cores and the reel-up drums. However, this has nothing to do with the actual movement of the reel-up drums during the cycle.

The invention is described in more detail below with reference to the drawings.

Fig. 1 shows schematically a perspective view of parts of a reel-up in a paper machine, viewed downstream from the operator's side, the reel-up having a handling station of which only the lifting device according to the present invention is shown.

Fig. 2 and 3 show schematically a side view and a perspective view of the reel according to Fig. 1, with the handling station shown and the reel in its original operating position.

Fig. 4 to 15 show schematic views of the reel according to Fig. 1 in different operating positions.

Figures 16 and 17 show schematically parts of the reel and its handling station at the downstream end.

Fig. 1 shows schematically in perspective view parts of a reel-up 1 in a paper machine in which paper is produced in a continuous web 2 which is wound up on a rotatable reel-up drum 4 in the reel-up 1 to form a roll of paper 3. The reel-up 1 has a frame 5 with first and second longitudinally extending parallel frame parts 6, 7 along which the paper rolls 3 roll on horizontal rails 8 which are rigidly mounted above each frame part 6 and 7 and form a lower pair of rails in the reel-up. The reel-up has a reeling station arranged immediately downstream of the upstream end of the reel-up. In the embodiment shown, the reeling station is constructed as follows. A surface winding drum 9 is rotatably mounted on the frame parts 6 and 7 at the upstream end of the reel-up 1. A drive device (not shown) gives the surface winding drum 9 a peripheral speed corresponding to the speed of the paper web 2. The frame rails 8 are arranged at a distance from each other which is slightly larger than the width of the paper web 2. The winding drum 4 is provided at each end with a brake drum 10 which has a coupling element 11 and a bearing housing 12 which is located inside the coupling element 11 and is provided with a peripheral groove 13. The winding drum 4 rolls along the frame parts 6 and 7, its peripheral grooves 13 cooperating with the frame rails 8. In the embodiment shown, each winding drum 4 is provided with two dimensionally stable, cylindrical cores 14. Alternatively, only one core can be used, as shown in Fig. 1. The winding drum 4 has extendable plates which, in an active, i.e. extended, state, lock the cores 14 to the winding drum 4 and which, in an inactive, i.e. non-extended state, release the core from the winding drum.

The reeling frame is provided with a horizontal frame-like upper frame part 16 supported by a plurality of columns 17 and having two parallel beams 18 extending in the machine direction. A support element 19 is arranged on the inside of each beam 18 and rigidly connected thereto by cross bars 20. The support elements 19 are spaced from the beam 18 and provided with rails 21 which are at a higher height than the beams 18. The rails 21 are arranged to carry cored reeling drums 4, which drums form a supply 15 for the continuous operation of the reel. Like the lower rails 8, the upper rails 21 are dimensioned to fit with a clearance into the circumferential grooves 13 of the reeling drums 4. The upper rails 21 and the lower rails 8 are arranged in pairs in a common vertical plane. The reel is provided with a feeding device 22 which feeds a reel drum 4 along the rails 21 when the reel drum has been raised and is arranged on the rails 21.

The feeding device 22 comprises a feeder 23 arranged close to each rail 21 for bringing into engagement with a reel drum when the reel drum is to be fed forward. The feeding device also comprises a pneumatic actuator 24 arranged on the outside of each support member 19 so as to move the feeder 23 back and forth along the rail 21. It should be understood that the two actuators 24 are synchronized with each other. In the illustrated In the embodiment, the actuator 24 consists of a cylinder 28 and a piston (not shown) movable therein, to which the feeder 23 is connected via a connector 25 (see Fig. 16) extending through a longitudinally extending, self-sealing groove (not shown) in the cylinder 28. The feeder 23 is rotatably arranged to be swung downwards to an inactive position under the influence of a reeling drum 4 when the feeder 23 returns to fetch this reeling drum. The feeder 23 is arranged to swing automatically up to its active position by means of springs. Counterweights may be used instead of the springs. An end stop 30 is arranged on each rail 21 to stop the forward feeding when the reeling drum 4 comes into contact with the end stop 30. Detection devices 31 (see Fig. 17) are also provided close to these end stops 30 and arranged on the inside of the support elements 19 in order to detect the presence and position of the foremost take-up drum 4.

At its upstream end, the reel is provided with a pair of lowering arms 32 (see Figs. 14 and 15) which are rotatably mounted on the columns 17 arranged there. With the aid of these lowering arms 32, a reeling drum 4 is transported downwards from the outlet 29 of the drum supply 15 to a primary system for receiving a reeling drum 4 arranged in connection with the surface winding drum 9. A pair of actuators 34 are arranged on the lowering arms 32 and extend between each lowering arm 32 and the frame part 6 or 7, respectively. Each lowering arm 32 has a roller surface 35 which extends along the upper edge of the arm 32 from its free outer end and is defined by an outer gripping hook 36 and an inner drum impact absorbing device 37 (see Fig. 1). A detection device 33 is also arranged on each drum impact absorbing device 37 in order to when the reel drum 4, gripped by the gripping hook 36 and raised by the lowering arm 32, has rolled along the roller surface 35 to the desired position before the lowering arm 32 returns to the primary system for receiving the reel drum 4. The receiving primary system (see Figs. 2 to 5) comprises two primary arms 38 arranged to receive the new reel drum 4 either directly from the lowering arms 32 or from a pair of lowering surfaces 39 arranged at each end of the surface winding drum 9 and at a level with its upper side when the paper roll 3 increasing around the downstream reel drum 4 approaches a certain predetermined size (see Fig. 6).

The reel 1 further comprises a secondary system having a pair of linearly movable secondary carriages 42 (see Figs. 6 and 7) which are displaceable by means of actuators 44 along a track or tracks 45 on each frame part 6 and 7. The primary arms 38 are arranged to bring the reel drum 4 into contact with the surface winding drum 9 over which the paper web 2 passes, to commence the winding of the paper web 2. As a number of turns of the paper web 2 have been wound onto the reel drum 4, the latter is conveyed by the primary arms 38 along the circumference of the surface winding drum 9 downwards to the frame parts 6 and 7, see Figs. 4 and 5, where the secondary system is arranged to take control of the reel drum 4 during continued winding. The actuating member 44 for the secondary carriage 42 (see Fig. 6) consists of a hydraulic or pneumatic cylinder, which is secured at one end to the secondary carriage 42 and at its other end to the frame 6, 7. The movements of the two secondary carriages 42 along the tracks 45 are thus synchronous with each other and with the increasing diameter of the paper roll 3, so that the secondary carriages 42 of the paper roll 3 along their horizontal movement during continued rolling up to a finished machine roll 3.

Both the primary system and the secondary system comprise gripping elements formed by a locking device 47 and a pressing device 48. The gripping elements support the reel drum 4 while at the same time allowing it to rotate freely within the gripping elements. The gripping elements of the secondary system are arranged to receive the reel drum 4 from the gripping elements of the primary system such that the end parts of the reel drum 4 with their bearing housings 12 rest directly on the rails 8. They may alternatively rest on separate rails. The pressing device 48 is arranged to act against the bearing housing 12 during reeling so that a desired and adjustable linear pressure is maintained in the gap between the surface winding drum 9 and the increasing paper roll 3. A central drive 100 for the reel drum 4 is also arranged in the secondary system (see Fig. 1), which means that the reel drum can be connected to a separate drive element via the opposite coupling device 11 of the reel drum 4. Since this drive element is mounted on one of the secondary carriages 42, it is linearly displaceable together with them in a direction parallel to the rails 8. A braking station 49 is also arranged at the downstream end of the reel 1 (see Figs. 8 and 9), at which braking station 49 the paper roll 3 arrives when the reeling has been completed and after the paper web 2 has been severed. At the braking station 49 the paper roll 3 is slowed down to a standstill by a braking device 50 mounted on each frame part 6, 7. The braking device 50 comprises braking arms 51 with associated actuators and brake pads. The cut end of the web is also stapled to the surface of the machine roll 3 at the braking station 49. The Braking station 49 also includes a discharge device 55 which causes the paper roll 3 to roll toward the downstream end. A stop 56 and an impact absorber 57 are provided at the downstream end of each frame part 6, 7 to restrict the horizontal movement of the paper roll 3 (see Figs. 16 and 17).

Upstream of the surface winding drum 9 there is a severing device (not shown) which slits the paper web 2 into two web sections 52, 53, see Fig. 5, which have substantially the same width as the length of the cores 14 screwed onto the winding drum 4, thus enabling each web section 52, 53 to be wound onto its own core 14.

The reel also comprises a multifunctional handling station 54 located at its downstream end for handling the finished rolls of paper 3, the reel drums 4 and the cores 14 therefor. The handling station 54 comprises a lifting table 58 (see Fig. 7) extending between the frame sections 6, 7. The lifting table 58 is vertically movable and pivotable with the aid of a plurality of vertical actuators 59 distributed along its long sides. The lifting table 58 is provided with suitable sleeve stops 110 on its upper side near the drive side.

The handling station 54 also comprises a device 60 for axially displacing a reeling drum 4 (see Fig. 11). This drum moving device 60 is located on the operator side of the reel, aligned with the lifting table 58, and comprises a longitudinally extending horizontal support element 62 arranged at right angles to the machine direction and formed by two parallel U-shaped rails 63, the upper surfaces 64 of which form sliding surfaces for the reeling drums 4.

Between them, the rails 63 define a space for accommodating a carriage 67 slidably mounted on the rails 63. The carriage 67 supports a gripping member 66 for releasably connecting to the opposite end portion of a reel drum 4. A motor 69 is mounted on the outer end portion of the support member 62 to drive a toothed belt 70 rigidly connected to the carriage 67 to move the carriage reciprocally on the support member 62.

The lifting table 58 has a concave or curved shape (see Fig. 13) so that the two machine rolls 61 formed after the winding drum 4 has been withdrawn are securely held. The lifting table 58 is also arranged, with the aid of the actuators 59, to tilt the machine rolls 61 in the downward direction either directly to a suitable transport device (not shown), such as a carriage or conveyor belt, or to a bench 71 (see Figs. 7 and 15), from which the machine rolls 61 are then transported further, either to a subsequent work station, which usually has some kind of converting or unwinding station, or to an intermediate storage facility with the aid of an overhead crane or truck, for example. The cores then return from this station to the winding machine.

The handling station 54 further comprises a core feeder 72 (see Fig. 9) which is provided with a horizontal, longitudinally extending channel 78 which is arranged at right angles to the machine direction and is located below the drum moving device 60. The channel 78 is open at its inner end which is located at an opening 111 in the frame part 6. A feeder 82 is slidably mounted in the channel 78. A motor 83 is mounted on the inner end portion of the channel 78 to drive a (non- shown) which is rigidly connected to the feeder 82 to move the feeder 82 back and forth in the channel 78. The start position of the feeder 82 is behind the core 14 and when actuated it presses against the rear end of the core 14 to feed it through the opening 111 in the frame part 6 and out to the lifting table 58. A side wall of the channel 78 is provided with an inlet opening 79 which is slightly longer than a core 14. The core feeder 78 is also provided with a magazine for cores 14 to be used. The magazine has a ramp 73 which is arranged opposite the inlet opening 79 of the channel 78 and is inclined towards this opening. The ramp 73 is provided with side plates 75 towards which the ends of the cores face and which serve as guides for the cores 14. A stop mechanism 76 (see Fig. 8) is arranged at the outlet end of the ramp 73 which in the closed position holds the cores 14 on the ramp 73 and in the open position allows the lowermost core 14 to roll down into the channel 18, thereafter returning to the closed position. The core feeder 72 comprises a control system (not shown) with associated detection devices at the inlet opening and outlet opening for the stored cores.

The handling station 54 further comprises a lifting device 84 for lifting a reel drum 4 provided with a core(s) from the lifting table 58 to the drum supply 15 at the top of the reel (see Figs. 8, 9, 16, 17). The lifting device 84 comprises two lifting elements 85 which, in the embodiment shown, form Z-shaped lifting arms, each of which is rotatably mounted on its own support element 19. Each lifting arm is designed in one piece and has an outer lifting arm section 86, an inner lifting arm section 87 and an inner bearing section 88. The two lifting arm sections 86 and 87 and the bearing section 88 together form the Z-shape.

The outer arm portion and the inner arm portion 86 and 87 are at an acute angle to each other and define a V-shaped pocket 89 between them for receiving an end portion of a reel drum 4. The inner lifting arm portion 87 and the bearing portion 88 form substantially a right angle to each other. An actuator 90 in the form of a drive cylinder is connected at one end to the inner bearing portion 88, spaced from its bearing shaft 112, and is connected at its other end to a fastener 113 mounted on the support member 19 (see Figs. 8 and 9). The lines of force of the drive cylinders 90 are arranged in their extensions at a distance from the bearing shafts 112 of the lifting arms 85 so that the required leverage is achieved when the lifting arms 85 are operated. The free end of the outer lifting arm portion 86 is provided with an upwardly directed stop 91, considering the lower starting position of the lifting arm, to hold a reeling drum 4 on the outer lifting arm portion 86 when the lifting is terminated. The lifting arms 85 are connected to each other by a parallel shaft 96, which ensures that the lifting arms 85 are rotated synchronously. The lifting arms 85 are in the machine direction and are parallel to each other. Their outer lifting arm portion and their inner lifting arm portion 86 and 87 form free edges along which the reeling drum 4 rolls during the start and completion of the lifting. An impact absorbing device 92 (see Fig. 17) is arranged at the transition between the outer lifting arm section and the inner lifting arm section 86 and 87 to prevent the lifting arms 85 from being damaged as a result of the impact energy of the reeling drums 4 against the lifting arms 85, the impact absorbing device 92 comprising a curved impact absorbing device 93 and a damping element 94 therefor in the form of a hydraulic cylinder. A plurality of detection devices 40, 41 (see Fig. 16) are arranged on or near each lifting arm 85 to detect some of the positions of the reeling drum 4 at the lifting arm 85 during its rolling movement thereon. In the embodiment shown, the detection means 40 are arranged to detect the position of the reel drum in the V-shaped pocket to obtain a signal for continued lifting of the reel drum 4 to the level of the rails 21 of the drum stock 15, that is, the presence of the two ends of the reel drum 4 is registered by the detection means 40. The detection means 41 are arranged at the end of the inner bearing section 87 to detect the completion of the lift and the subsequent delivery of the reel drum 4 to the rails 21 of the drum stock 15 so that the lifting arms 85 can return to their lower retrieval positions. An impact absorbing device 95 is also arranged at the end of the inner bearing section 87 to dampen the rolling away movement of the reel drum 4 from the lifting arms 85 to the rails 21 of the drum supply 15. Blocking elements 98 are arranged at suitable locations along the rails 21, the blocking elements 98 being arranged to be folded away under the influence of a reel drum 4 rolling on the rails and then to return to their blocking position where the reel drum 4 is prevented from rolling back. The blocking elements can be provided with springs or counterweights.

The handling station 54 also comprises a control and adjustment unit of any type (not shown) to which the detection devices 40, 41, 46 and the actuators 90 are connected for the purpose of actuating and deactivating the actuators 90 which actuate the lifting arms. The other detection devices 31, 33, 43 of the reel and the detection devices not shown can also be connected to this control and adjustment unit if desired.

When the reeling process is started at the reeler 1 (see Fig. 2), the primary arms 38 are in their upper pick-up position, with their gripping elements above the surface winding drum 9 and the gripping element open and ready to pick up a first reeling drum 4. The secondary carriages 42 are at their upstream positions close to the surface winding drum 9. A first reeling drum 4 is located on the upper rails 21 above the surface winding drum 9 and is ready to be gripped by the lowering arms 32, the latter still in their lowest position. Downstream at the reeler 1, the braking station 49 with its braking arm 51 is ready to pick up and slow down a finished machine roll 3. The severing device has been started, but is not in the production position.

Downstream and near the operator side of the reel 1, the first core 14 waits at its feed position in the core feed device 72 (see Fig. 3). The lifting table 58 is at its lowermost position and the furthest core stop 110 is adjusted in the direction of insertion of the core 14 to receive the first core 14 at a position of the lifting table 58 suitable for the actual slitting of the paper web. A reel drum 4, which is still without a core, is in the feed position in the drum moving device 60 on the side of the reel. The lifting arms 85 are at their lowermost position. The feeder 23 of the feed device 22 is in a standby position at the input end 99 of the drum supply 15 (see Fig. 16).

When starting, the lowering arms 32 move upwards to the drum supply 15 and the outermost reel drum 4 at the drum supply 15 is lifted over the end stop 30 of the drum supply 15 by the lifting arms 32 (see Fig. 1, 14, 15), after which the reel drum 4 is moved along the roller surfaces 35 of the lowering arms 32 to the impact absorbing devices 37. rolls. The detection devices 33 (see Fig. 1) indicate when the take-up drum has reached the correct position, whereupon the lowering arms 32 are rotated downwards to the lowering surfaces 39 (see Fig. 14) of the primary system a distance above the surface winding drum 9, where the gripping devices of the primary arms 38 take over the take-up drum 4. During the downward movement, the take-up drum 4 rolls again to the gripping hooks 36 of the lowering arms 32, but the latter have been lowered sufficiently far in the meantime to allow the take-up drum 4 to pass freely past the end stop 30 of the drum supply 15, and the next take-up drum 4 is now fed that far by the feeding device 22 (see Fig. 12).

The pricing device 48 and the locking device 47 of the primary arms 38 together embrace the reel drum 4 and position it at its starting position. The reel drum 4 is then accelerated to the same peripheral speed as that of the surface winding drum 9 in order to minimize friction when they are brought into contact with each other. When contact with the paper web 2 is made, wrapping takes place and the paper web 2 is transferred to the reel drum 4 in a suitable manner, for example the downwardly increasing paper roll 3 (see Fig. 6) can be slowed down so that a surplus of web 2 is created which is drawn into the nip and then severed. Alternatively, wrapping can be effected by glue or tape applied to the cores 14 of the reel drum 4. When the paper web 2 is divided into different web sections 52 and 53 (see Fig. 5), the severing device is started. While a number of windings of the paper web 2 are wound onto the reel drum 4, it is moved by the primary arms 38 along the circumference of the surface winding drum 9 downwards to the frame parts 6, 7 (see Fig. 4, 5), where the Gripping elements of the secondary system take control of the reeling drum 4 (see Fig. 6). The lowering arms 32 are thus free to allow the initially lowered reeling drum 4 to pass on to be rotated upwards towards the reel supply 15, being ready to fetch the next reeling drum 4 when a signal is given to do so.

As the paper roll 3 increases, first the primary arms 38 and then, after supplying the reel drum 4 to the secondary system, the secondary carriages 42 are gradually positioned outside of the surface winding drum 9. For the secondary system this means that the secondary carriages 42 move synchronously horizontally along the frame rails 8 (see Fig. 6).

When the paper roll 3 has reached its full size, it rolls forward to the braking station 49 where it is gripped by the braking arms 51 (see Fig. 8). The roll 3 is now slowed down to approximately 20% of the production speed and the central drive is disconnected. The drive is stopped completely and the paper roll 3 enters the handling station 54 through the output device 55 (see Fig. 10) and its arrival is detected by the detection devices 43 (see Fig. 16).

The lifting table 58 and the paper roll 3 are lifted a short distance from the rails 8 of the frame parts 6 and 7 so that the reel drum 4 is free from the frame 5 and the reel drum 4 can be removed (see Figs. 10 to 13) by gripping its brake drum 10 on the operator side 6 by the gripping elements 66 of the drum moving device 60. The plates of the reel drum 4 are released, disengaging the cores 14, after which the gripping element 66 pulls the reel drum 4 out to a rest position on the support element 62 (see Figs. 11 and 13). The Machine rolls 61, now released from the lifting table 58, are tipped out onto the bench 71 (see Fig. 15) by the inner and outer rows of actuators 59 of the lifting table 58 (see Fig. 1) which are actuated in opposite directions. For example, a truck or overhead crane then collects the paper rolls 61.

A core 14 is caused to roll from the ramp 73 to the channel 78 located downstream in the roll-out direction. The core 14 is then fed along the channel 78 with the aid of the feeder 82 in the axial direction to the lifting table 58 (see Fig. 5). The core stop 110 of the lifting table 58 and its concave shape guarantee that the cores 34 arrive at the correct position on the lifting table 58. When the same number of cores 14 as severed web sections 52, 53 in the paper web 2 have thus been introduced axially one after the other on the lifting table 58 (see Fig. 5) and the lifting table 58 has been raised by its actuators 59 to the height of the drum moving device 60, the gripping elements 66 of the latter again guide the reeling drum 4 through all the cores 14 on the lifting table 58 to a rest position, each end of the reeling drum 4 being on the frame rails 8 (see Fig. 7).

The machine operator causes the reel drum 4 to expand, thereby firmly locking the cores 14 in the correct position for the severed web sections 52 and 53, and the reel drum 4 with its cores is then ready to be automatically transported up to the rails 21 of the drum supply 15 by the lifting device 84 at the downstream end of the reel 1. The lifting arms 85 are thus in their lowest position, to which they are lowered each time a reel drum 4 with its cores has been lifted.

The actuators 90 of the lifting device 84 are operated for a short interval so as to achieve a first, initial, upward rotational movement. The reel drum 4 is gripped by each stop 91 on the lifting arms 85 and raised a short distance so as to cause the reel drum 4 to roll slowly toward the pockets 89 formed between the outer lifting arm portion and the inner lifting arm portion 86 and 87 (see Figures 8 and 9). When the reel drum 4 has been gripped, the lifting table 58 is lowered to its lowermost position by the lifting device 84. The impact energy of the drum 4 caused by rolling is absorbed by the impact absorbing devices 92 (see Fig. 17), and when both ends of the reeling drum 4 have thus arrived in the pockets 89, the detection devices 40 in the pockets indicate that the drum 4 is in the correct position for lifting.

The actuators 90 are actuated once more and the reel drum 4 is raised to the entrance 99 of the drum supply 15 where it rolls away from the inner lifting arm portions 87 of the lifting arms 85 downwards to the rails 21 (see Figs. 11 and 17). The rolling movement is slightly retarded by the impact absorbing means 95. The detecting means 41 indicate that the reel drum 4 has been transported to the supply 15 and the lifting arms 85 are then pivoted back to their lowermost positions. The reel drum 4 passes the blocking elements 98 arranged on each rail 21 which, after being folded aside during the passage of the drum, return to their upright blocking positions, thereby preventing the reel drum 4 from rolling back. Finally, the feed devices 23 move the reel drum 4 forward to the outlet 29 of the drum supply 15 either as far as the reel drums 4 already are, or up to the end stop 30 (see Fig. 17). In the first case, the detection devices 31 indicate that both ends of the winding drum 4 have reached the correct position.

The actuators mentioned above can be hydraulic, pneumatic, electrical or mechanical actuators.

Some or all of the parts of the handling station located on the operator side can be located on the drive side of the reel if desired.

The reeling station of the reel can of course be designed in various known ways. In an alternative embodiment (not shown) the reel has no primary system and instead has double secondary units which are linearly movable along the machine frame, the secondary units picking up the reeling drums directly from the lifting arms in alternation. Every second unit then supports the reeling drum during the entire production phase from the empty reeling drum to the finished paper roll. Alternatively the secondary system can consist of just a pair of rotating secondary arms.

Additional detection means to those described may be arranged at suitable locations on the reel-up to detect the beginning or end of various phases or movements during the reeling of the paper web and the handling of the reeling drums, cores and paper rolls.

Claims (9)

1. Reel in a paper machine for producing a paper web (2) which is rolled up on reel drums (4) provided with cores (14) to form rolls (3) of paper, wherein the reel has an upstream end and a downstream end and comprises: - a lower pair of parallel rails (8) extending from the upstream end to the downstream end for supporting a reeling drum (4), the opposite end portions of which are arranged to roll along the rails (8), - an upper pair of parallel rails (21) extending from the downstream end to the vicinity of the upstream end above and spaced from the lower pair of rails (8) for supporting a supply (15) of reeling drums provided with cores, the opposite end portions of the reeling drums being adapted to roll along the upper rails (21), - a reeling station arranged immediately downstream of the upstream end in connection with the lower pair of rails (8) for reeling the paper web onto the reeling drum, - lowering devices which lower a reeling drum provided with a core(s) from the upper pair of rails (21) to the reeling station, - a multi-function handling station (54) located at the downstream end for handling finished rolls of paper (3), reel drums (4) and cores (14), the handling station comprising: - a vertically movable lifting table (58) for picking up one finished roll of paper at a time, - a device (60) for moving a reel drum (4) from a roll of paper located on the lifting table (58) and for inserting the reel drum into a core or several cores (14) located on the lifting table and aligned with the drum moving device (60) after the roll of paper has been removed from the lifting table and - a device for feeding cores (14) onto the lifting table (58), - the multi-function handling station (54) being provided with a lifting device (84) having two lifting elements (85) arranged to engage the end portions of a reel drum (4) provided with a core(s) and located on the lifting table (58) and to lift them and deliver them to the upper pair of rails (21), and with actuators (90) connected to the lifting elements (85) to move them from the lifting table (58) to the reel drum delivery point on the upper pair of rails (21), characterized in that - the lifting elements (85) consist of lifting arms which are rotatably mounted on the reel on stationary bearing shafts which enable rotation from a lower retrieval position to an upper delivery position, and - each of the rotatably mounted lifting arms (85) has an outer lifting arm section (86), an inner lifting arm section (87) and an inner bearing section (88), along which lifting arm sections (86, 87) the winding drum (4) is intended to roll, the bearing section (88) forming an actuating arm which is connected to one end of an actuating member (90), the other end of which is mounted on the upper rails (21) or on a fastening element (113) near the upper rails. 2. Reel according to claim 1, characterized in that the lifting arm (85) is Z-shaped, whereby the The outer lifting arm section and the inner lifting arm section (86, 87) form an acute angle to each other to define a V-shaped pocket (89), and the bearing portion (88) is arranged substantially at a right angle to the inner lifting arm portion (87). 3. Reel according to claim 1 or 2, characterized in that the outer lifting arm portion (86) of the lifting arm (85) is designed with a stop (91) at its free outer end to ensure that the reel drum (4) does not roll away from the outer lifting arm portion (86) at the start of lifting. 4. Reel according to one of claims 1 to 3, characterized in that a first impact absorbing device (92) is arranged at a transition between the outer lifting arm section and the inner lifting arm section (86, 87), the impact absorbing device (92) having a shock absorbing device (93) and a damper device (94) arranged thereon. 5. Reel according to claim 4, characterized in that a second impact absorbing device (95) is arranged at the end portion of the inner lifting arm portion (87) which is arranged closest to the bearing portion (88) in order to damp the rolling away movement of the reel drum (4) from the lifting arm portion (87) out onto the rails (21). 6. Reel according to one of claims 1 to 5, characterized in that a parallel shaft (96) extends between the lifting arms (85), the parallel shaft (96) being arranged so that it ensures that the lifting arms (85) are operated synchronously with each other. 7. Reel according to one of claims 1 to 6, characterized in that the handling station (54) has a plurality of detection devices to indicate different positions of the reel drum (4) for controlling and adjusting the movement and stop positions of the lifting elements (85). 8. Reel according to claim 7, characterized in that the detection devices comprise: - first detection means (46) arranged to detect the presence of an empty reeling drum (4) provided with a core(s) in order to start the actuation of the actuators (90) to engage the lifting elements (85) with the end portions of the reeling drum, - second detecting means (40) arranged to detect a predetermined position of the reel drum on the lifting elements (85) to start the operation of the actuators (90) to lift and deliver the reel drum to the upper pair of rails (21), and - third detection means (41) for detecting the delivery of the raised reel drum (4) to start the actuation of the actuators (90) to return the lifting elements (85) to an inactive position adjacent to the lifting table (58). 9. Reel according to claim 7 or 8, characterized in that the handling station (54) has a control and adjustment unit to which the detection devices (40, 41, 46) and actuators (90) are connected in order to activate and deactivate the actuators (90).