FI68593C - RULLANORDNING I PAPPERSMASKIN - Google Patents

Description

68593

Paper track reel Rullanordning i pappersmaskin

The invention relates to a paper web winding device comprising two adjacent winding sets, each of which has pairs of forks on which the spool rolls on which the paper rolls are formed are brought from their support devices, and which pairs of forks are connected to actuators, such as hydraulic cylinders. , in which the empty spool rolls are brought to the support of said fork piston and in the winding positions, and in which both winding stations of the device are provided with operating means for rotating the spool rolls on a central winding principle, and in which

It is known that the so-called pope reel in general e.g. for winding a paper web coming from a paper or printing machine, where the roll is rolled for 15 ns. to the spool roll, and the resulting roll is pressed into the drive roller against a pope cylinder which the lateral web partially travels and which is rotated at a circumferential speed corresponding to the speed of the web. Before the roll is completed, a new empty spool roll can be brought into contact with the drive roll so that it also has a corresponding circumferential speed. As soon as the paper roll has reached the desired diameter, it is moved away from the drive roller. In this case, its rotational speed begins to slow down, which causes a tension-free rally loop to form between the new roller shaft and the finished roller.

This loop is guided by compressed air fuses or other suitable means to wrap around the new spool roll, whereby it will of course tear off the 25 finished rolls.

As is already known, in the winding step, the shaft of the paper roll usually rests and rotates on two support rails. To this end, it has special bearing layers at its ends, which also control the passage of the roller when, when completed, it is transferred along said rails for further processing. In papermaking, this further processing is usually a longitudinal section in which the roll is cut and disassembled into smaller rolls. Many cranes can and are used to return and replace empty tubular rolls. It is also possible to install above said support rails lls rails, along which the spool rolls are returned and on which they are stored to await replacement. In this case, special replacement grooves are required to move the spool rolls from the rails to the winding position. Such a solution is disclosed, for example, in GB Patent 1,264,850 (B 65 H 19/30).

10 A disadvantage of the previously known reeling lathes based on the use of a pope cylinder has been that when the roll to be formed is rotated by means of a pope cylinder, the formation of the roll to be formed is not always completely controlled, but wrinkles form on the roll, especially on the bottom of the roll. The object of the present invention is to avoid this drawback as well, in part by the fact that the invention is based on the so-called winder-laukseen.

There have been quite a lot of wrecks in the known rollers, especially when driving small rollers, the surface part of which rolls relatively loosely and 20 this part often gets into the wreck.

The object of the present invention is to further develop the previously known paper web winding flat so that the above-mentioned drawbacks are avoided and to provide such a new winding device in which 25 ns. a pope cylinder, which has been a relatively expensive component because it has required a specially cast casing and special bearings.

It is a further object of the present invention to provide a winding device which does not necessarily require initial starting devices in which an empty spool roll is accelerated to the speed of a paper web.

It is an object of the invention to provide a winding device in which braking devices are not necessarily required at all, with which the completed roller is braked without rotation.

35

In order to achieve the above and later objects, the invention is mainly characterized in that said winding stations are arranged to cooperate so that when a roll to be made at one winding station is completed, an empty spool roll at the second winding station can be brought into contact with the outer roll.

5

Since the winding plate according to the invention is based on the so-called the principle of central rolling, the rolling event is better controlled than in the previously known pope-syllnterlrullalmls.

to Another important advantage of the invention is that, in connection with the change of the roll, thanks to the invention, virtually no scrap paper is generated, which is relatively much produced with the known pope-eyl cylinder rollers.

This advantage is achieved by the invention in that two adjacent winding stations can be adapted to co-operate alternately, so that after a wound made with a knife chisel known per se can be ruptured with known blowing devices, the track can be suddenly torn and immediately transferred from a full roll to a speed roller accelerated to a suitable speed, to which the winding of the paper web is continuously transferred.

20

A significant advantage of the invention is that in the winder according to the invention the roll size (roll diameter) is completely freely selectable.

In the roll roll according to the invention, the change of the roll is substantially substantially accelerated, because the time when the full roll is lowered onto the log is completely eliminated, because in the invention the empty spool roll is immediately ready for rolling.

Thanks to the invention, it is possible to omit the full roller braking devices from the device if necessary, since the spool roll can be braked non-rotatably by its drive devices using suitable deceleration so that wrinkles do not form on the bottom of the roller, as has often happened with known devices. In connection with the invention, said braking can be performed by means of an electric motor even as a useful braking to the electrical network.

35

The previously mentioned braking times for full rollers may have been only about 10-15 s. In the invention, if necessary, considerably longer braking times or braking devices of up to about 0.5 h can always be used, as friction of the devices is not always necessary, have time to brake the full rollers from rotating. This prevents wrinkles, especially on the bottom of the roller.

5

In the invention, adjacent cooperating winding stations may be either in the same horizontal plane, in the same vertical plane or in another suitable mutual position.

The invention will now be described in detail with reference to an embodiment of the invention shown in the figures of the accompanying drawing, to the details of which the invention is not intended to be limited.

Figure 1 shows a schematic side view of a winding device according to the invention.

Figure 2 shows a vertical section II-II in Figure 1.

The winding device shown in the figures comprises two winding stations A and B, of which the parts of the first A are indicated by reference numerals 10-19 and the parts of the second B by reference numerals 20-29, respectively. Rolling stations A and B are side by side in the same horizontal plane. The tampon rolls on which the paper rolls R1 and R2 from the track W are formed are denoted by reference numerals 10 and 20. The tampon rolls 10; 20 are introduced into the winding stations along a pair of rails 19; 29. Figure 1 shows rollers 10a and 20a of 25 waiting-for-once spool rollers on these rails 19; 29, which are in a waiting position behind the detents 47. When the detents 47 are turned by their actuators (not shown) below the upper side of the rails 19; 29, the rollers 10a, 20a roll to support the fork pairs 11 'and 21' in the waiting position.

30

The winding stations A; B have pairs of forks 11; 21 which are rotatably mounted about an axis K-K on the axes 37. The pairs of forks 11; 21 are arranged on said shafts 37 between vertical supports 38 fixed to a base 39. The base 39 is fixed to the floor level 40. At the lower end of the pairs of hooks 11; 21 there is a sector plate 13; 23 with a toothed ring 16; 26 on the outside. The forks of the fork pairs 11; 21 are connected to each other by synchronizing shafts 14; 24> with gears 36 at their ends, which act on the gear frames 16; 26 of the sector plates 13; 23. Treatment and use of the half-brackets 11, 21 are synchronized rotation with each other with respect to said synchronization axes 14, 24 · fork pairs 11, 21 are turned by the hydraulic cylinders 15, 25, whose piston rods 17, 27 are connected to the sector plates 13, 23.

5

The paper web W is introduced into the winding under the control of a guide roll 41 located below the winding stations A and B. The web W is controlled by air blowing devices 42 and 43. The tampon rolls are indicated by the references 10 'and 20' in the position in which the winding is started after the break. In this case, the forks are in positions 10 H "and 21", the piston rods of the hydraulic cylinders 15 '; 25 are then in positions 17' and 27 '. Above the tampon rolls 10 'and 20', three blow tubes 43 are arranged, by means of which the web W can be guided to wind on one of the two empty tampon rolls 10 '; 20'.

The structure of the tampon rollers 10; 20 is for the most part already known and will be seen in more detail in Fig. 2, according to which the ends of the tampon rollers 10 have shaft pins 31 with a drive gear 32 at the other end with an external gear ring 33. The prior art tampon rollers have no outer ring gear. 33. The ham-20 mask ring 33 of the gear 32 is driven by the gear ring of the drive gear 12. The gear 12 is on the drive shaft 18 of the electric motor 34 on the stand 35, the center of rotation K-K of which is on the same horizontal line as the center of rotation of the pivot shaft 37 of the pair of forks 11.

Mounted on the shaft pins 31 of the tampon roll 10 are bearing housings 30. Inside the bearing housings 30 are bearings 44 with which the shaft pins 31 of the tampon roller 10 are mounted on said bearing housings 30. In the middle of the bearing housings 30 there is a groove 45 for mounting and securing the bearing housings 30 to the forks 11. The forks have latch devices 46 (Fig. 1) with which the bearing housings 30 can be locked to the forks 11.

The winding device described above operates as follows. In the initial stage, the fork pairs 11 and 21 are turned to the position 11 * and 21 'to receive empty tampon rolls 10a; 20a from the storage rail pairs 19; 29. The detents 47 are lowered onto the rails 19; 29 below the top side and the spool rolls 10a; 20a are rolled into forks 11 *; 21 * and their latches 46 are locked. The forks 11 'and 21' are turned to the vertical position shown in broken lines in Fig. 1, 6 68593, at which point both bump rollers 10 and 20 have been accelerated by their electric motors 34 to a circumferential speed corresponding to the speed W of the track. When said acceleration has been completed, the rollers are turned to positions 10 'and 20', whereby they contact each other to form a transfer nip N, in which 5 a narrow edge band cut from the track W is to the pulper below (not shown). The edge strip is applied as is known per se to a full-width track W, and winding around the spool roll 20 'begins. The free spool roll 10 'can be left to load the roll forming on the roll 20' or moved to a position corresponding to the vertical position of the arms 11.

When the spool roll 20 is completed, the path W enters it in the position V? 2 and what situation corresponds to the roller R2 drawn in dotted lines, the spool roll 10 is moved to contact the paper roll R2 with its casing unless said contact is permanently maintained. The change of winding from the winding station 15 to the winding station A and from the spool roll 20 to the roll 10 is performed as follows. With knife devices (not shown) a wound is made in the path W and the path is cut and guided around the spool roll 10 by means of a blow tube 43. As the track W rolls around the spool roll 10, the full roll of paper R2 is turned by the forks 21 away from the spool roll 10 and the new roll formed on it 20. If necessary, the full roller R2 is braked by previously known braking devices. The latches 46 are opened and the non-rotating roller R2 is lifted from the support of the forks 21 by a bridge crane in the paper machine room. The forks 21 are then turned to position 21 'to receive a new empty spool roll 20a. As the time for the next spool roll change 25 approaches, the empty spool roll 20 is started and accelerated to the speed W of the track with the forks 21 in the vertical position shown in broken lines. The exchange is performed as described above. Rolling is continued alternately at adjacent rolling stations A and B.

Figure 1 shows winding stations A and B located side by side in the same horizontal plane. The winder according to the invention can also be implemented in such a way that the winding stations A and B are placed on top of each other, which in some cases may be advantageous from the point of view of the use of space in the paper machine room. Solutions between the above investment options 35 are also possible.

Once completed, the full roll of paper R1, R2 can be braked to rotation, preferably using the actuators 12,18,33,34 described above, since the roll can be held in support of the fork pairs 11,21 for a considerable time after completion and while a second roll is made next to the finished roll. rolls. Solutions are also possible in which the drive motor 34 acts as a generator and performs a service brake on the electrical network.

After the roller has been braked to non-rotation or its rotation has stopped due to frictional forces, the full roller R1, R2 10 is moved away from the winder, for example using a bridge crane in a paper machine room.

The following claims set forth within the scope of the inventive idea defined by the various details of the invention may vary and differ from those set forth above.

Claims (6)

8 68593 A paper web (W) winding device comprising two adjacent winding stations (A, B), each having pairs of forks (11, 21) on which the spool rolls (10, 20) on which the paper rolls (R1, R2) are formed, imported from their support devices (19, 29), and which fork pairs 5 (11, 21) are connected to actuators, such as hydraulic cylinders (15, 25), by which said fork pairs (11, 21) are pivotable to a position (11f »21f) in which the empty spool rollers ( 10a, 20a) are brought into the support of said forks (11, 21) as well as in the winding positions, and both winding stations (A, B) of the device are provided with drive devices (12,22; 18,28; 10 34,44) with tile rollers (10 , 20) is rotated according to the center winding principle, and in which device the paper web (W ^ .W ^) can be cut off and guided to another empty spool roll (20, 10) at the winding station (B, A), characterized in that said winding stations (A, B) is adapted to co-operate so that at the second winding station a (A, B) When the roll (R1, R2) to be made is completed, an empty spool roll (20, 10) at the second winding station (B, A) can be brought into contact with the outer circumference of the roll (R1, R2) being completed. Winding device according to claim 1, characterized in that the drive of the spool rolls (10, 20) comprises a drive shaft (18) driven by an electric motor (34) or the like, to which a drive gear (12) is driven, which drives the spool roll (10) on its shaft pin. (31) and that the center of rotation of said drive shaft (18) and the drive gear (12) is on the same line (KK) as the center of rotation of the pivot shaft (37) of said pairs of forks (11, 21). Rolling device according to claim 1 or 2, characterized in that said pairs of forks (11, 21) have toothed rings 30 (16, 26) with a center equal to the center of rotation (KK) of the pairs of forks (11, 21) and that said toothed rings (11) 16,26) there is hammaskehil-ether (36) with synchronous shaft (14 to 24) for the drive side and the management-side pairs of forks are synchronized with each other. 35 9 68593 Winding device according to one of Claims 1 to 3, characterized in that the winding stations (A, B) are arranged to cooperate at the beginning of the winding, so that the two empty spool rolls (10 ', 20') form a transfer nip (N) through which the track (W) the headband is passed over the second spool roll 5 (10 ', 20') to the pulper and that after the step (W) has been applied as defined above, the path (W) is rolled around the second spool roll (10,20) and the second spool roll (20,10) is moved to the side or kept in contact with the forming roller, e.g. by sealing it. Winding device according to one of Claims 1 to 4, characterized in that the pairs of forks (11, 21) are pivotally mounted (37) between vertical supports (38) on which the sector plates (13, 23) of the forks (11, 21) are arranged. provided with an external ring gear (16,26) in connection with which gears (36) at the end of the synchronizing shafts (14,24) operate. Winding device according to any one of claims 1 to 5, characterized in that the winding stations (A, B) are arranged such that said pairs of forks (11, 21) are in a substantially vertical position during the operating steps in which the support spool (10) is supported. 20) the roller (R1, R2) is fulfilled and in the operation lie, in which the path (W1, R2) is guided to pass from the full roller (R1, R2) to the associated empty spool roll (20,10) using knife devices and blowing devices (43) ), 25 which is in an adjacent winding position (A, B) and that said pairs of forks (11, 21) have two substantially non-inverted positions substantially symmetrically with respect to their vertical position, of which in the winding positions outwardly turned (11 ', 21') an empty spool roll ( 10a, 20a) are brought into the support of the fork pair and in opposite positions the tamped rollers (10 ', 20') turned to each other 30 form a transfer nip (N), through which the head of the track (W) the belt is guided at the stage of operation when the winding is started after the break. 35 10 68593