Device for Winding Web-Shaped Material
The invention relates to a device for winding web-shaped material on winding sleeves into
winding rolls and for unwinding winding rolls with a beam which floats in a frame and can be
rotated around a horizontal axis and at which at least two winding shafts (center sleeves), which
are provided with drives and can be rotated around horizontal axes, are mounted so as to float.
One special problem associated with winding and unwinding devices for winding rolls lies in the
fact that the winding sleeves, forming the cores of the winding rolls, are slid on center sleeves
and have to be pulled off from them, a process that is possible only if one end of the center
sleeves is free and freely accessible. To guarantee this free accessibility, it is well-known that
the center sleeves can be suspended from their beams so that there is free access. However, this
suspension of the center sleeves can lead to trouble during the winding and unwinding procedure,
if they are not adequately rigid and tend to oscillate due to then length. Such undesired
oscillations must cause grave concern, especially when the center sleeves are long and serve with
significant weight the purpose of winding the winding rolls, since then the heavy winding rolls,
located on the center sleeves, form a spring-mass system that tends to oscillate
Therefore, the object of the invention is to provide winding and unwinding devices of the type
designated in the introductory part, where the winding rolls, located on the center sleeves,
cannot oscillate or vibrate in an undesired manner.
The invention solves this problem by attaching to the beam the traverses, which support
bearings, which can be moved between their fixable position, bearing the free ends of the winding
shafts, and their position releasing them.
The device, according to the invention, provides bearings, which are connected rigidly to the
beam, bearing the center sleeves, ana which bear the free ends of the center slowes and thus
brace them, so that they cannot oscillate in an undesired manner. Owing to the bearings
mobility, they can be moved easily and quickly between their position, bearing the center sleeves,
and their position releasing the same, so that there is no adverse effect on the ease with which
the device can be manipulated.
Expediently the beam is connected to two traverses, which run parallel to the winding shafts and
at whose free ends pivotable bearing brackets, provided with the bearings, are mounted. During
the winding and unwinding operation these bearing brackets can be pivoted in their position
bearing the center sleeves and can be fixed in this position and can be swung down again in
order to release the center sleeves.
To lock the bearing brackets in their swung down position, they are provided expediently with
holding mechanisms. They can comprise customary gas pressure springs, whose cylinder or piston
rods are hinged to the bearing brackets or traverses. Since the bearing brackets are swung down
only when the winding device is standing still, the holding mechanisms or gas pressure
springs have only to guarantee that the bearing brackets are held in their swung down position
Another design of the invention provides that the beam is mounted by means of a hollow journal
in the frame and that a hollow shaft is mounted in the journal and in said hollow shaft is
mounted a shaft, whose ends, projecting beyond the beam, bear chain wheels or belt pulleys, over
which the continuous chains or belts, driving the winding shafts, run. In this manner the winding
shafts for winding and unwinding webs can be driven in a simple manner.
The other ends of the shafts and hollow shafts also bear expediently chain wheels or belt pulleys,
over which chains or belts run for the purpose of driving said wheels or pulleys
The shaft journal of the beam itself can bear a chain wheel to drive the same.
In principle this drive is activated only for the purpose of changing the winding rolls.
A preferred embodiment provides that to lock the bearing brackets in the position, bearing the
winding shaft, to a bolt, which can be slid axially on the traverse, eccentric rollers or disks are
provided. The bolts can be rotated around a specific angle so that they exert the requisite
pressure on the bearing brackets by means of the eccentric rollers or disks.
To rotate the bolts into their locking position and to lock said bolts in said locking position, said
bolts are provided expediently with an actuating lever and can be slid axially in a bushing
attached to a traverse, whereby a slide catch for fixing the bolt in the locking position is
provided.
One embodiment of the invention is explained in detail with reference to the drawings in the
following.
Figure 1 is schematic drawing of a cross sectional side view of the winding and unwinding
device.
Figure 2 is a view of the device in the direction of the arrows A in Figure 1; and
Figure 3 is an enlarged view of the locking bolt, indicated by a dashed circle in Figure 2.
The frame of the winding and unwinding device 1 consists of a base frame 2, which bears two
parallel side members 3. Brackets 4. 5 are connected in the customary manner in the form of
a yoke to the side members 3. a hollow pin 6 can be freely pivoted in said brackets and the left
end of said hollow pin is connected to a disk-shaped beam 7. Two winding shafts (center sleeves)
10, 11 float in bearings 8, 9 at the beam 7 and can be freely pivoted concentrically to the axis
of the pin 6. Synchronous belt pulleys 12, 13 are keyed to the winding shafts 10, 11, said pulleys
can be driven via synchronous belts by synchronous belt pulleys 14, 15, which are attached on
a hollow shaft 1G, which is mounted so as to rotate freely in the pin 6, and on a shaft. 17, which
can rotate freely in the hollow shaft 16, Synchronous belt pulleys 18, 19, over which run
continuous synchronous belts 20, 21, driven by drives (not illustrated), are keyed to the opposite
free ends of the hollow shaft 16 and shaft 17.
Between the brackets 4, 5 bearing the hollow pin 6, a chain wheel 22 is keyed to the pin 6; said
chain wheel can be driven over a continuous chain 23 by a gear motor 24, which is mounted on
a side member 3.
Parallel to the winding shafts 10, 11. freely cantilevered traverses 25, 26 are mounted on the
beam 7; and in particular in such manner that their common center plane 27 intersects at right
angles the center plane 28, in which the axes of the winding shafts 10, 11 lie. The traverses 25.
26 bear pins 29, 30, which are brought into alignment in the central plane 27 and on which the
overlapping bearing legs 31, 32 can be pivoted from bearing brackets 33, 34. The bearing
brackets 33, 34 are provided with hinged bearings 35, 36, which can be put on the free ends of
the winding shafts 10. 11 in the manner shown in Figure 1 and can be swung down from the
same. To hold the bearing brackets 33. 34 in their swung down positions, there are gas pressure
springs 38, whose cylinders are hinged to the traverses 25, 26 and whose piston rods are hinged
to the bearing brackets 33, 34.
Bushings 39, in which bolts 40 can be slid axially, are mounted on the traverses 25, 26. The inner
ends of the bolts bear eccentric rollers 41, which are braced against the bearing brackets 33.
34 in the locked position shown in Figure 2 and lock said brackets in their position bearing the
free ends of the winding shafts. The bolts 40 are provided with radial levers 42 and nobs for the
purpose of actuating the same Furthermore, the bolts 40 exhibit radial pins 43, which are guided
in bayonet-like guide grooves 44 of the bushing 39.
WE CLAIM
Device for winding web-shaped material on winding sleeves into winding rolls (45) and for
unwinding winding rolls (45)
with a beam (7). which floats in a frame and can be rotated around a horizontal axis and
at which at least two winding shafts (center sleeves) (10, 11), which are provided with
drives and can be rotated around horizontal axes, are mounted so as to float.
characterized by
attaching to the beam (7) the traverses (25, 26). which support bearings (35, 36), which
can be moved between their fixable position, bearing the free ends of the winding shafts
(10, 11), and their position releasing them
Device, as claimed in claim 1. characterized in that the beam (7) is connected to two
traverses (25. 26). which run parallel to the winding shafts (10, 11) and at whose free
ends pivolable bearing brackets (33. 34). provided with the bearings (35, 36). are
mounted.
3. Device as claimed in claim 1 or 2, characterized in that to lock the bearing brackets (33,
34) in their swung down position, they are provided with holding mechanisms.
4. Device, as claimed in claim 3, characterized in that the holding mechanisms comprise gas
pressure springs (38), whose cylinder or piston rods are hinged to the bearing brackets
(33, 34) or the traverses (25, 26).
5. Device, as claimed in any one of the claims 1 to 4. characterized in that the beam (7)
is mounted by means of a hollow journal (6) in the frame (2, 3) and that a hollow shaft
(16) is mounted in the journal (6) and in said hollow shaft is mounted a shaft (17), whose
ends, projecting beyond the beam (7), bear chain wheels or belt pulleys (14, 15), over
which the continuous chains or belts, driving the winding shafts (10, 11), run.
6 Device, as claimed in any one of the claims 1 to 5. characterized in that the other ends
of the shaft (17) and hollow shaft (16) also bear chain wheels (18, 19), over which chains
or belts (20) run for the purpose of driving the same.
7. Device, as claimed in any one of the claims 1 to 6, characterized in that the shaft journal
(6) of the beam (7) bears a chain wheel (22) to drive the same.
8. Device, as claimed in any one of the claims 1 to 7. characterized in that to lock the
bearing brackets (33, 34) in the positions, bearing the winding shafts, to bolts (40), which
can be slid axially on the traverses, eccentric rollers (41) or disks are provided.
Device, as claimed in claim 8. characterized in that the bolt (40) is provided with an
actuating lever (42) and is slid axially in a bushing (39) attached to a traverse (25, 26),
and that a slide catch (43, 44) for fixing the bolt (40) in its locking position is provided

A device for winding web-shaped material on winding sleeves into winding rolls and for unwinding
winding rolls with a beam, which floats in a frame and can be rotated around a horizontal axis
and at which at least two winding shafts, which are provided with drives and can be rotated
around vertical-axes, are mounted so as to float. To provide simple access to the winding shafts
when said winding shafts are mounted so as not to oscillate, traverses are attached to the beam
said traverses supporting bearings, which can be moved between their fixable position bearing
the free ends of the winding shafts and their position releasing them.