EP0595229B1 - Device for winding a continuous fed material web on a number of winding cores - Google Patents

Abstract

Shortly before the removal of a finished roll (55) from the main winding point (6), a drive mechanism (16) is coupled to a winding core (8) disposed in a stand-by position (57). Said drive mechanism (16) drives the winding core (8) before the latter is placed on the material web running over the winding drum (2). The winding core (8) continues to be driven until the winding core (8) with material web already wound thereon has been transferred to supporting arms (3) at the main winding point (6). By virtue of the continuous driving of the winding core (8) during a roll change, high-quality rolls (55) can be wound with an extremely wide variety of material webs. <IMAGE>

Description

The present invention relates to a device for Winding up a continuously fed material web to a number of winding cores according to the preamble of Claim 1.

A device of this type is known from DE-A-32 12 960 known, in the two lateral, pivoted Holding arms for holding a winding core and for Transfer of the same from an auxiliary winding station to one Main winding station are available. To drive the yourself empty winding core in a waiting position there is a drive unit which is a pair of Swivel arms, each with a rotatably mounted has driven friction wheel. The winding core lies on the pair of friction wheels and is by the latter in the Waiting position held and also in sync with the Speed of the material web driven. The Place the winding core on a contact roller (Winding drum) takes place by swiveling the Pair of swivel arms. After putting on the The winding core on the contact roller becomes the winding core no longer from the friction wheel pair, but from the contact roller driven.

The present invention is based on the object to create a device of the type mentioned at the outset, which allows material webs with the most varied Material properties for high quality rolls wind up.

According to the invention, this object is achieved with a device solved according to claim 1.

By driving the empty winding cores both in front of the Place on the one running over the winding drum Material web as well as during the subsequent one Winding the material web and overfilling the Winding core from the auxiliary winding point to Main winding point by means of a trackable Drive unit can be rolls or reels from of excellent quality, namely from Material webs with the most varied Material properties. It is also important that cutting through the web of material in their Direction of movement seen behind the auxiliary winding station he follows. With this measure, the material losses reduced and higher winding speeds enables.

Fig. 1

in Seitenansicht eine Aufwickelvorrichtung der erfindungsgemässen Art,

Fig. 2

in Seitenansicht einen Teil der Vorrichtung gemäss Figur 1,

Fig. 3

einen Schnitt entlang der Linie A-A in Figur 1,

Fig. 4

einen Schnitt entlang der Linie B-B in Figur 3

Fig. 5

einen Schnitt entlang der Linie C-C in Figur 4, und

Fig. 6-12

in einer der Figur 1 entsprechenden Seitenansicht die Aufwickelvorrichtung in verschiedenen Zeitpunkten des Aufwickelvorganges.

An exemplary embodiment of the subject matter of the invention is explained in more detail below with reference to the drawing. It shows purely schematically:

Fig. 1

a side view of a winding device of the type according to the invention,

Fig. 2

a side view of part of the device according to Figure 1,

Fig. 3

2 shows a section along the line AA in FIG. 1,

Fig. 4

a section along the line BB in Figure 3

Fig. 5

a section along the line CC in Figure 4, and

Fig. 6-12

in a side view corresponding to Figure 1, the winding device at different times of the winding process.

The structure of a preferred embodiment of an inventive Rewinder described.

In a machine frame 1, which is only partially in Figure 1 is shown, a winding drum 2 is rotatably mounted. This winding drum is on, not shown known way in the direction of arrow D around its axis 2a driven. In this direction of rotation D of the winding drum 2, the latter is a pair of support arms 3 downstream, of which only one support arm is visible. Each support arm 3 is about an axis 3a in the direction of Arrow A pivotally mounted in frame 1. On the support arms 3 engages a swivel drive 4 only indicated in FIG. 1 on, a fluid-operated piston-cylinder unit, not shown has, such as from the US-A-4,191,341 and CH-A-666,014 (or the corresponding US-A-4,552,317) is known per se. Everyone Bearing arm 3 has a bearing 5 at its free end Recording of the winding shaft from winding cores. In the in Figure 1 shown position of the support arms 3 put this with a free end 6 a main winding.

A feeder 7 is located above the winding drum 2 for empty winding cores 8. This feed 7 has holder 9 on, rotating around two in the direction of arrow B. drivable chains 10 are attached, of which in Figure 1 only one chain is visible. The winding cores 8 lie with the ends of its winding shaft 11 on these holders 9 on. On the winding shaft 11 is a sleeve 12 (or several sleeves) pushed on.

Rotating arms 13 are on the frame 1 on both sides of the winding drum 2 arranged, of which only one rotary arm in Figure 1 is visible. These pivot arms are about the axis of rotation 2a Winding drum 2 rotatably mounted. The rotary arms 13 are by means of a drive, not shown, still closed descriptive pivoted about the axis of rotation 2a.

As far as the winding device shown corresponds to Principle known winding devices, such as those e.g. are known from US-A-4,191,341.

In Figure 2 is the construction of the rotary arms 13, which for Serve each take up a winding core 8, more clearly shown. Each pivot arm 13 has at its free end a receiving opening 14 to receive the Winding shaft 11 of a winding core 8 is used. In these Receiving opening 14 protrudes against spring force retractable hold-down device 15 which serves to the winding shaft 11 in its position in the receiving opening 14 to keep and thus prevent the Winding shaft 11 during its rotation in the receiving opening 14 can move.

To drive the winding cores 8 is generally 16 designated drive mechanism available, its more precise Structure is shown in Figures 3-5. This Drive mechanism 16 has a swivel arm 17 which by means of a projecting hollow shaft 17a via a bearing 18 is rotatably mounted in a holding plate 19 (Figure 3). This holding plate 19 is on fasteners 20 on Base frame 1 attached. The arrangement is like this hit that the pivot axis 17 'of the pivot arm 17th aligned with the axis of rotation 2a of the winding drum 2. At the end one part of the two-armed swivel arm 17 engages Drive 21 on, as a pneumatic piston-cylinder unit is trained. The cylinder 22 of this drive 21 is on its end 22a pivotally attached to the base frame 1. The Piston rod 23 of the drive 21 is at its end 23a articulated to the swivel arm 17. At the end of other part of the pivot arm 17 is pivotable Coupling arm 24 arranged. To store this Coupling arm 24 is a bearing part 25 on the swivel arm 17 provided (Figure 3) in which a shaft 26 is rotatable is arranged. The coupling arm 24 is rotatable on this Shaft 26 mounted. The coupling arm 24 has one Extension part 27 on which the piston rod 28 one pneumatic piston-cylinder unit 29 attacks. With this piston-cylinder unit 29 is another pneumatic piston-cylinder unit 30 connected. Towards that are the cylinders of these two piston-cylinder units 29, 30 firmly connected with their bottoms. The Piston rod 31 of the second piston-cylinder unit 30 engages adjacent to the end 23a of the piston rod 23 of the Drive 21 at one end of the swivel arm 17, like that is apparent from Figures 1 and 3.

As can be seen from Figures 3 and 5, is on the coupling arm 24 on its opposite the extension part 27 End of a bearing part 32 is arranged. Inside this Bearing part 32 is rotatably mounted on a shaft 33 a gear 34 is keyed. This gear 34 is used to engage another gear 35 that sits on the end 11a of the winding shafts 11. In the Figures 3-5 is the coupling arm 24 in its shown engaged position in which the gears 34th and 35 are engaged with each other.

For driving the shaft 33 and thus the gear 34 a pulley 36 is arranged on this shaft 33, which via a belt 37 with a second belt wheel 38 is connected to one end of the shaft 26 on this is attached. At the opposite end of the shaft 26 is another pulley 39 attached, which has a belt 40 is connected to a pulley 41 which on a Shaft 42 sits, which inside the hollow shaft 17a of the Swivel arm 17 is rotatably mounted. On this wave 42 a second pulley 43 is arranged, which over a Belt 44 is connected to a pulley 45 which on the Shaft 46a of a drive motor 46 is seated. This engine 46 is attached to the frame 1, like that of Figures 1 and 3 emerges.

At its end having the bearing part 32 the Coupling arm 24 a holding part 47 in which a clamping bolt 48 slidably mounted in the direction of arrow C (Fig. 4) is. This clamping bolt 48 is one on the piston rod 49 pneumatic piston-cylinder unit 50 which arranged is attached to this holding part 47. With himself in his Coupling position located coupling arm 24 is used extended bolt 48 to the outer ring of a ball or To clamp roller bearing 51, which on the end 11a the winding shaft 11 is applied (see in particular the Figures 4 and 5). In the holding part 47 is a cylindrical Counter surface 52 (FIG. 4) formed, the clamping bolt 48th opposite and on which the outer ring of the ball or Roller bearing 51 comes to rest, as shown in FIGS. 4 and 5 emerges. When the clamping bolt 48 is extended thus the outer ring of this ball or roller bearing 51 between this clamping bolt 48 and the one mentioned Counter surface 52 clamped.

Another sits on the end 11a of the winding shaft 11 Ball or roller bearing 53 (Fig. 5), which in the Receiving opening 14 of a rotary arm 13 comes to rest.

The mode of operation of FIGS Winding device explained in more detail, the in these Figures used reference numerals to those of Figure 1 correspond.

Figure 6 shows the drive device in its Home position, which they usually, i.e. during the Formation of a role at the main winding position 6. 6 is continuous in the direction E. fed and running over the winding drum 2 Material web (e.g. a plastic film) with 54 and that in the main winding position 6 forming role with 55 designated. The winding of the material web 54 in itself Direction of the arrow F rotating roller 55 is on known manner with or without driving the in the Bear 5 of the support arms 3 mounted winding shaft. In the following description is now assumed that the winding shaft mounted in the support arms 3 by means of a Drive, not shown, is driven like that from the previously mentioned US-A-4,191,341 is known.

In this basic position of the drive device 16 is the Piston rod 23 of the drive 21 fully extended. Of the Swivel arm 17 is in its rear end position. The piston rods 28 and 31 of the piston-cylinder units 29, 30, on the other hand, are fully retracted, which means that the coupling arm 24 in its rear end position is held. The drive motor 46 is stopped. The Rotating arms 13 are also in their basic position (6 o'clock position). In Figure 6 (and also in the following Figures 7-12) is still connected to the rotating arms 13 Separating device 56 for the material web shown, which too is of a known type.

In Figure 7 is a point in time shortly before completion the roller 55 shown. The feed 7 is briefly in Movement has been set and has the winding core 8 from the in Figure 6 shown position in the waiting position 57th lowered. In this waiting position 57 the Winding core 8 running over the winding roller 2 Material web 54 not yet. The winding shaft 11 is with the Receiving opening 14 of the rotating arms 13 aligned in the In the meantime from their basic position towards the Arrow G into the takeover position shown in FIG. 7 have been shot. The parts of the drive mechanism 16 take the one described with reference to FIG. 6 Home position. As FIG. 7 further shows, it is now running the material web 54 via the separating device 56.

Now, as shown in Figure 8, the Drive mechanism 16 with the waiting position 57th located winding core 8 coupled. For this, the piston-cylinder unit 30 activated and the piston rod 31 extended. The clutch arm 24 turns in clockwise pivoted the operative position in which the gear 34 with the Gear 35 to be engaged on the winding shaft 11 comes and the counter surface 52 of the holding part 47 on the outer ring of the ball or roller bearing 51 on the Winding shaft 11 comes to rest. Then the piston-cylinder unit 50 activated and the clamping bolt 48 extended as shown in Figures 3-5. The Winding shaft 11 of the waiting position 57 The winding core 8 is now fixed to the drive mechanism coupled. The drive motor 46 is turned on and the Winding shaft 11 and thus the winding core 8 is in Counterclockwise driven, with one Peripheral speed, the speed of movement corresponds to the material web 54. Thus the winding core 8 brought to sync speed before hitting the Winding roller 2 is placed.

After coupling the coupling arm 24 to the winding shaft 11, the piston-cylinder units 21, 29 and 30 switched off, i.e. the piston rods 23, 28 and 31 can the movements of the swivel arm 17 and Join the clutch arm 24 practically without resistance.

Now the driven winding core 8 from the Waiting position 57 lowered and in contact with the over brought the winding drum 2 running material web 54. This lowering of the driven winding core takes place on the one hand under the effect of gravity and on the other hand, by means of the set in motion again Feeder 7 (Fig. 9). Immediately before hanging up the The winding core 8 on the material web 54 becomes the latter severed by means of the separating device 56. This in Direction of movement of the material web 54 seen behind the End 54 ′ of the material web 54 lying separating device 56 is still wound on the roll 55 during the subsequent part of a designated 58 in Figure 9 Auxiliary winding station on the still driven Winding core 8 is wound.

Then the support arms 3 with the finished Roll 55 in the direction of arrow A from the Main winding point 6 pivoted away, like that in Figure 10 is shown. The finished roll 55 is now the Support arms 3 removed and carried away. Then be the support arms 3 again in the winding position swiveled back.

In the meantime, an auxiliary winding station 58 becomes a new role 59 formed.

Now the rotary arms 13 from the takeover position in Twisted in the direction of arrow G (clockwise), the Winding core 8 or the new winding 59 from the Auxiliary winding unit 58 is brought to the main winding unit 6 (Fig. 11). During this swiveling movement the Winding core 8 continues to be driven. Since as mentioned the Piston-cylinder unit 21 is depressurized, the Swivel arm 17 join the swivel movement. Of the Coupling arm 24 is also free, the growing one The diameter of the new roller 59 increases accordingly swivel. Do the rotary arms 13 have the same as in FIG handover shown reached, then the Transfer of the winding core 8 or the new roll 59 of the rotating arms 13 to the support arms 3. After Transfer of the winding core 8 to the support arms 3 is the Support arms 3 assigned drive for the winding shaft 11 in Gear set and the drive mechanism 16 disengaged (Fig. 12). The latter is done by withdrawing the Clamping bolt 48 in the retracted position and Swiveling up the coupling arm 24 by means of the activated Cylinder-piston unit 30.

The rotary arms 13 are again in their basic position (Fig. 6) rotated. Likewise, by activating the Piston-cylinder unit 21 of the swivel arm 17 in the Home position swiveled back.

At the main winding point 6, the next roll 59 now as already mentioned wrapped. Just before the role 59 has reached its given size becomes as above the next role change is explained with reference to FIGS. 7-12 initiated and carried out.

Because the empty winding core when changing reels 8 before placing on the over the winding drum 2 running material web 54 is driven and during the it is driven throughout the entire phase of the roll change possible, even with materials that only work with Let difficulties wind up, rolls very high Maintain quality.

In the following some variants of the shown are briefly Described embodiment.

Preferably, for the piston-cylinder units 21, 29 and 30 pneumatic units used, as opposed to Solutions with other print media has the advantage that the Transfer of the winding cores 8 to the rotating arms 13 and the latter to the support arms 3 regardless of the train in the Material web 54 can take place.

Instead of the two piston-cylinder units connected together 29, 30 can also be a single piston-cylinder unit be used, but what a more complex control is required because of the piston not only has to be held in the end positions, but also in intermediate positions.

Coupling the coupling arm 24 to the winding shaft 11 in the radial direction has the advantage of being better Adaptation to the diameter of the winding core 8 forming role 59 is possible and that no axial forces occur. But it is also conceivable that Drive mechanism 16 in the axial direction to the To couple winding shaft 11, both on the front side the winding shaft 11 as well as on the drive mechanism 16 Appropriate coupling parts are to be provided.

The construction of the described with reference to Figures 3-5 Drive mechanism 16 allows this as a separate Training unit that can also be retrofitted existing rewinder can be added. Through the described power transmission from the drive motor 46 on the gear 34 by means of a belt drive Drive motor 46 arranged stationary on the base frame 1 become.

The winding device described can also be used Winding of material webs, i.e. Plastic sheeting, be used on which no pressure is exerted should. With such material webs, the winding takes place at the main winding point 6 on the roll 55 as such known so that between the roller 55 and the Winding drum 2 there is always a gap (so-called. Slit winding). In such a case, the driven Winding core 8 from the waiting position 57 only lowered to the extent that between the winding core 8 and the winding drum 2 running material web 54 there is a gap. During the Movement of the winding core 8 from the auxiliary winding station 58 to the main winding point 6, i.e. during the rotation of the Rotating arms 13 from the takeover position into the Handover, a gap is then maintained. The material web 54 is thus also during the Never change the roll against the winding drum 2.

Claims (13)

1. Device for winding a continuously fed material web onto a number of winding cores, having a winding drum (2) which is mounted so that it can rotate about a fixed axis (2a) and over which the material web (54) is led; having a bearing arrangement (13) for accommodating a winding core (8) and transferring the same from an auxiliary winding point (58) to a main winding point (6), which is downstream as viewed in the direction of motion (E) of the material web (54) and at which the material web (54) is wound onto the winding core (8) to form a reel (55) of given size; having means (7, 16) for feeding an empty winding core (8) in each case from a waiting position (57) to the auxiliary winding point (58), at which the empty winding core (8) is brought into contact with the material web (54) running over the winding drum (2), and for rotationally driving an empty winding core (8) in each case, these means (7, 16) comprising a coupling arrangement (24) which can be engaged and disengaged and is arranged at one end of a pivot arm (17) which can be pivoted about a fixed axis (17') by means of a first drive arrangement (21), preferably a piston/cylinder unit, the arrangement also having a coupling element (34) which can be driven from a stationary drive motor (46), can be coupled to an empty winding core (8) that is located in the waiting position (57) and can be released from this again; and having a severing device (56) for severing the material web (54) when there is an empty winding core (8) at the auxiliary winding point (58), characterized in that the severing device (56) is arranged between the auxiliary winding point (58) and the main winding point (6), in that the pivot arm (17) can be pivoted out of the region of the auxiliary winding point (58), towards the main winding point (6), and back, in that the coupling arrangement (24) is pivotably mounted on the pivot arm (17) and can be pivoted by a second drive arrangement (29, 30), preferably at least one piston/cylinder unit, which is arranged on the pivot arm (17), and in that the coupling element (34) has a drive connection to the winding core (8) during the movement of the latter from the auxiliary winding point (58) to the main winding point (6).
2. Device according to Claim 1, characterized in that the pivot arm (17) is fastened to the frame (1) of the winding device in such a way that the axis of rotation (17') of the pivot arm (17) aligns with the axis of rotation (2a) of the winding drum (2)
3. Device according to Claim 1 or 2, characterized in that the coupling element (34) of the coupling arrangement (24) can be brought releasably into engagement with a further coupling element (35) on the winding core (8).
4. Device according to Claim 3, characterized in that the coupling arrangement (24) can be pivoted from a rest position into a driving position, in which its coupling element (34) is engaged with the further coupling element (35) on the winding core (8).
5. Device according to Claim 3 or 4, characterized in that the two coupling elements (34, 35) are gearwheels.
6. Device according to one of Claims 3 - 5, characterized in that the coupling arrangement (24) has a clamping arrangement (47, 52, 48), by means of which, when the coupling elements (34, 35) are engaged, the outer ring of a ball-bearing or roller bearing (51) that is seated on the shaft (11) of the winding core (8) can be firmly clamped.
7. Device according to one of Claims 1 - 6, characterized in that the bearing arrangement has two rotary arms (13) to accommodate empty winding cores (8), these arms being arranged on both sides of the winding drum (2) and being able to pivot about the axis of rotation (2a) of the winding drum (2).
8. Device according to one of Claims 1 - 7, characterized in that the bearing arrangement (13) can be moved between a take-over position and a transfer position, in which the winding core (8) is transferred to a second bearing arrangement (3), which is downstream of the winding drum (2) as viewed in the direction of motion (E) of the material web (54), and in each case releasably supports a winding core (8), the coupling element (34) of the coupling arrangement (24) being uncoupled from the winding core (8) after the winding core (8) has been transferred from the first bearing arrangement (13) to the second bearing arrangement (3).
9. Device according to Claim 8, characterized in that the second bearing arrangement has two pivotably mounted carrying arms (3) which are used to accommodate the winding cores (8).
10. Device according to one of Claims 1 - 9, characterized by a feed device (7) for feeding an empty winding core (8) in each case from a waiting position to the auxiliary winding point (58).
11. Device according to one of Claims 1 - 10, characterized in that, at the auxiliary winding point, the empty winding core (8) is placed onto the material web (54) that is resting on the winding drum (2).
12. Device according to one of Claims 1 - 10, characterized in that the empty winding core (8) is kept at a distance from the material web (54) that is resting on the winding drum (2), both at the auxiliary winding point (58) and while the core is moving from the auxiliary winding point (58) to the main winding point (6).
13. Device according to one of Claims 1 - 12, characterized in that the drive unit (16) comprising the pivot arm (17), the drive arrangement (21) assigned to the latter and the coupling arrangement (24) is constructed as a modular unit.

Images