DE29923000U1 - Loose flange for a winding drum - Google Patents

Description

Company Johannes Lübbering AG, Haldenstr. 1, CH-6340 Baar "Loose flange for a winding drum"

The innovation concerns a flange for a winding drum, such as

for example a cable drum.

Such winding drums can be used not only for cable goods, but also for the most diverse winding goods, such as fabric strips, hoses or wire goods.

Winding drums of this type are known in particular in the form of cable drums for the electrical industry, so that the more specific term "cable drum" is used below instead of the more general term "winding drum", without implying the application of the winding drum to this application.

rich to limit.

Cable drums are known from practice that have a hollow winding core and two lateral flanges that prevent the cable on the winding core from slipping sideways.

The cable can be removed from such cable drums by storing the cable drum with its two flanges on rollers, so that the cable drum remains stationary but is still unrolled and in this way the cable can be easily removed from the drum.

can be deducted.

If the flanges are damaged on the circumference, unrolling is made considerably more difficult and comparatively complex and therefore costly measures must be taken

to allow the cable to continue to unwind without any problems. To do this, either the flange can be repaired or a disc can be glued onto the existing, damaged flange, or the cable drum must be clamped into a holder that has a continuous rod

as a holding and unwinding shaft, which extends through the ·.

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hollow winding core, so that the cable drum can be unrolled around this rod. Together with the device that has the rod, the entire cable drum is then comparatively difficult to handle and especially difficult to transport, which is particularly

use and when used in service vehicles.

Furthermore, it is known from practice to transport cables on flangeless winding cores, whereby these winding cores are clamped in a ladder-like device. The

"Rung" as the holding and unwinding shaft described above, which holds the winding core, while the two lateral "spars" prevent the cable from slipping sideways off the winding core, similar to the flanges of a cable drum, after the packaging of the cable, for example a shrink film, has been

has been removed once. The handling disadvantages of the cable holders equipped with such holding and unwinding shafts already described above also apply to these applications of the flangeless winding cores.

The innovation is based on the task of creating a device that enables the winding material to be unrolled from a winding drum without any problems and at low cost.

This task underlying the innovation is carried out by

a flange with the features of claim 1.

In other words, the innovation proposes to create a detachable flange that can be attached to a hollow winding core. This allows the flange to be used as a quick-to-use

The replacement of a damaged original flange can prevent the uncontrolled unwinding of the cable or other winding material from the winding drum.

This method of fastening makes it possible, in particular, to

damaged cable drums where the flange is at its

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circumference is damaged and unrolling is difficult, the new loose flange should be attached in addition to the existing, damaged flange, and should be reliably centered, so that the damaged, non-rollable cable drum can now be unrolled again without any problems. The flange is therefore advantageously designed for unrolling the cable drums, i.e. it has a round outer contour as a running surface, which can also be reinforced, for example, by appropriate material accumulation or by a hardened surface, or by a particularly low-wear surface material in the area of the running

surface ensures a long service life of the flanges, even if they are frequently unrolled.

It can be provided that the new detachable flange, which is referred to as a "replacement flange" or "repair flange"

has the same diameter as the original flange.

However, it can be advantageously provided that the flange according to the innovation has a larger diameter than a

Original flange of a cable drum. In this way, the number of different, new flange diameters can be reduced, which would otherwise have to be stored to adapt to the different diameters of various cable drums. A bowl-like contour of the

The use of a flange according to the innovation, which has a space for the original flange of a cable drum, offers the possibility of enabling a few stages of "repair flanges" with different diameters. The use of such bowl-shaped flanges then requires that both

The ends of the winding core are fitted with such detachable flanges in order to ensure the same flange diameter on both sides of the cable drum and thus an even and problem-free unwinding of the cable drum.

The bowl-shaped contour of the removable flange also has the advantage that the distance between the two running surfaces on which the cable drum runs can be the same as the running surface distance of the two original flanges on the cable drum. If the cable drum is so wide that it uses the maximum permissible width of an unwinding device, this bowl-shaped contour of the removable flanges ensures that the cable drum equipped with such "repair flanges" can still be unwound on the same unwinding device.

In addition, the flange designed according to the innovation and detachable from the winding core for the aforementioned applications of flangeless winding cores enables the retrofitting of such a container with flanges, so that a proper ca

cable drum is created, which can be stored on the aforementioned unwinding devices. The cables can be purchased inexpensively by the consumer only assembled on the winding core, so that a cost advantage is achieved for the consumer. The consumer can accordingly

Depending on its intended use, the user can either arrange this winding core in one of the ladder-like holders mentioned, or by arranging the additional flanges, he can create a cable drum that can run and be unrolled on the unwinding devices with the running surfaces of the flanges.

The holder for fastening the flange in the winding core can basically be designed, for example, in the form of a thread, which is designed as a self-tapping thread and in the, for example, plastic or cardboard

existing winding core can be screwed in.

However, particularly simple and quick handling can be achieved by means of a quick-release fastener that can be operated without tools, for example by the holding device

is designed as a spreading body. The spreading body can

For example, they can have several spreading jaws that can be spread by operating an eccentric, a rotary handle or the like on the outside of the flange and thus fit against the inner wall of the winding core. 5

If there are undercuts inside the winding core, the expansion jaws can reach into these and thus enable not only a force fit, but also a form fit between the flange and the winding core. If the winding core is made of a soft material, e.g. cardboard or a suitably

soft plastics, the spreading jaws can be designed as spreading mandrels and penetrate into the wall of the winding core and thus enable not only a frictional connection but also a positive connection.

As an alternative to such rigid expansion elements, an expansion element can be designed as an elastic expansion body. This can be the case, for example, in the form of a hollow hose which is pressurized pneumatically or hydraulically, expands and adheres to the inner wall.

A purely mechanical expansion of such an elastic expansion body can also be provided, for example in the form of tensionable leaf springs, or by pulling or pushing a pressure body into an annular, elastic expansion body, so

that the expansion body is thereby expanded in order to attach itself firmly to the inner wall of the winding core.

Advantageously, the flange can be designed in several parts. An inner part or insert part can be provided which is radially smaller than the winding core, so that this insert part can be inserted into a winding core. The insert part has the holder to enable a firm connection to the winding core. The actual flange body is then provided as an additional element.

. which extends radially beyond the winding core and

which forms a safety device for the cable against slipping off the winding core. This allows an inexpensive replacement of the flange body if, for example, it is damaged on its outer circumference along its running surface. The possibly more expensive plug-in part, with the holder and

A mechanism for operating it can always be reused. This insert part is arranged in a relatively protected manner, so that damage is to be expected much less frequently than with the actual flange body.

In addition, such a modular flange design makes it possible to create inexpensive, standardized flange bodies with only one or possibly a few different diameters that can be combined with different plug-in parts. This allows different input

Plug-in parts can be used to adapt to different winding cores, for example if the winding cores have different inner diameters or another different geometry that requires the interaction with special holders.

Alternatively, adapters can be provided on the flange to adapt to different winding cores, so that the flange and in particular its holder can always remain the same and only be adjusted as required by attaching a

suitable adapter, which is adapted to the inner diameter or geometry of the winding cores to be used.

Advantageously, the flanges, whether they are designed in one piece or in multiple pieces, can have central holes along the center or rotation axis of the flanges. In this way, when using two flanges, the storage of the cable drum thus formed is also possible in a holder with a horizontal holding and unwinding shaft, or when using only one flange, the storage of the container and the removal of the

Cables from rod- or skewer-like, inclined or almost vertical, freely ending brackets.

Examples of the innovation are explained in more detail below using the drawings.

Fig. 1 in schematic, perspective and disassembled

Fig. 2 shows a cross-section through part of a cable

drum together with the flange attached to it from

Fig.1,

Fig. 3 two embodiments with compared to Fig. 2

and 4 larger winding cores and with adapters to adapt the flange of Fig.1 to these winding cores.

In Fig. 1, 1 generally designates a flange with an approximately disk-shaped flange body 2 and a clamping device. The clamping device has a clamping lever 3 which is rotated about an axis 4 relative to a clamping rod 5.

can be pivoted. The clamping rod 5 extends through the flange body 2, a centering disk 6, a support plate 7 and a holder 8 in the form of an elastomer sleeve into a lock nut 9. The lock nut 9 is knurled on its outer circumference so that it can be screwed onto the clamping rod 5 without the need for tools.

can be screwed in order to change the preload acting on the bracket 8.

Since the arrangement of the axis 4 in the clamping lever 3 allows the clamping lever 3 to be pivoted eccentrically, by actuating

of the clamping lever 3, the lock nut 9 is moved towards the support plate 7 so that the elastomer sleeve which forms the holder 8 is compressed in such a way that its length decreases, but its diameter increases. 35

In Fig. 2, the flange 1 is shown as a spare part on a cable drum 10. The cable drum 10 has a winding core 11, which can be made, for example, as an inexpensive cardboard or plastic tube. A cable 12 is wound onto the winding core 11. A flange 20, also made of cardboard or an inexpensive plastic, for example, is connected to the winding core 11, which is attached to the winding core 11 at the factory and which was damaged in the embodiment shown, the damaged area not being visible in Fig. 2. The factory flange 20 can thus be

bent or torn, which makes it difficult to unwind the cable drum 10 and thus unwind the cable 12.

The clamping lever 5 is in its clamping position in Fig. 2, ie it is completely immersed in the flange body 2. The clamping rod 5 exerts tension on the lock nut 9, so that the holder 8 has been spread and, with its now enlarged diameter, has clamped itself against the inside of the winding core 11, so that a firm, force-locking connection between the flange 1 and

the winding core 11.

Through a recess 21, the flange 1 is given an overall approximately bowl-shaped shape, whereby the flange 20 provided at the factory on the winding core 11 is inserted into this recess 21 of the

flange 1. A running surface 22 of the flange 1 runs around the recess 21 so that it can run on a rolling device with the same track width as the cable drum 10 with its factory-fitted flanges 20 requires.

In the operating position shown in Fig. 2, the clamping lever 3 is completely immersed in the flange body 2, so that an accidental actuation of the clamping lever 3 and thus of the holder 8 is difficult. In addition, a safety device can be provided.

hen, which hold the clamping lever 3 in this operating position

so that an accidental detachment of the flange 1 from the cable drum 10 can be excluded and thus a "cable tangling" can be avoided.

While Fig. 2 shows the repair of a defective cable drum 10

with damaged standard flange 20, Fig. 3 and 4 show the use of the flange 1 to produce a cable drum from a cable bundle, which is only wound onto a winding core 11. At the same time, Fig. 3 shows an adapter 14, which is used to adapt the

flange 1 to a winding core 11 which has a larger diameter than the diameter of the winding core 11 from Fig. 2. Of course, the flange 1 can also be used on flangeless winding cores 11 with an inner diameter adapted to the flange, such as that from Fig. 1

used without an adapter. And of course an adapter can also be provided if a winding core 11 which is too large for the flange and is provided with standard flanges is to be repaired using the flange 10, similar to Fig. 2.

The adapter 14 of Fig. 3 has a receiving opening 15 into which the holder 8 of the flange 1 can be inserted. Several expanding mandrels 16 are arranged around the receiving opening 15, which can be moved radially

moved outwards, i.e. can be spread and then penetrate into the winding core 11. Thus, the adapter 14 not only achieves a force fit, but also a form fit between flange 1 and winding core 11. The adapter 14 can have an approximately ring-shaped housing, with several radially arranged

running bores through which the expanding mandrels 16 extend.

In Fig. 4, a second embodiment of an adapter 14 is shown: Around its receiving opening 15, several

re individual segments 17 are arranged, whereby for clarity

For safety reasons, additional guide means (not shown) can be provided, e.g. in the form of a cage-like housing or the like, which holds the segments 17 together in a captive manner. On their outer circumference, the segments have circumferential grooves in which elastomer rings 18 are arranged. These elastomer rings serve on the one hand to hold the segments 17 together and on the other hand to fix the winding core 11 when the segments 17 are spread apart by actuating the holder 8 and are pressed against the inner surface of the winding core 11 with the elastomer rings 18.

As an alternative to the elastomer rings 18 or in addition to these, the segments 17 can have a surface profile that enables the application of high clamping forces, or instead of the separate elastomer rings 18, the segments

17 have a friction-friendly coating on their radially outer surface, which enables the desired frictional connection to the winding core 11.

The adapters 14 of Fig. 3 and 4 represent particularly simple and

inexpensive embodiments of adapters that convert the spreading movement of the holder 8 into a corresponding clamping, with which the winding core 11 is fixed. However, the adapters can also be designed in a fundamentally different way: for example, if instead of the elastomer sleeve made of

formed holder 8, more complicated holders are provided, e.g. pivotally mounted hooks or the like, which are pivoted by actuating the tensioning lever 3 and press against the inner surface of the winding core 11 or dip into undercuts of the winding core 11.

In such brackets, the associated adapters can in turn have similar holding means as well as a transmission rod or other transmission mechanism which transmits the movement of the flange-side bracket to the adapt-

ner-side holding means, so that when the ...

By means of the clamping lever 3 on the flange 1, the flange-side holder is first moved, this movement is transferred to the adapter-side holding means, which then finally fix the flange 1 on the winding core 11.

Claims (9)

1. Flange ( 1 ) for a winding drum having a hollow winding core ( 11 ), such as a cable drum ( 10 ), wherein the flange ( 1 ) has a holder ( 8 ) which extends into the cavity of the winding core ( 11 ), and wherein the flange ( 1 ) is detachably attachable to the winding core ( 11 ). 2. Flange according to claim 1, characterized in that the flange ( 1 ) forms a running surface ( 22 ) on which the winding drum can be rolled, in particular in cooperation with a second flange ( 1 ) of the same diameter at the other end of the winding core ( 11 ). 3. Flange according to claim 2, characterized by a bowl-like cross-sectional contour which forms a recess ( 21 ) as a receiving space for an original flange ( 20 ) of the winding drum which is firmly connected to the winding core ( 11 ). 4. Flange according to one of the preceding claims, characterized in that the holder ( 8 ) has a spreading element. 5. Flange according to claim 4, characterized in that the spreading element is designed in the form of two or more spreading jaws. 6. Flange according to claim 4, characterized in that the expansion element is designed as an elastic expansion body which, when pressure is applied, rests against the winding core ( 11 ). 7. Flange according to one of the preceding claims, characterized by an adapter () which has holding means on its radially outer surface for fixing to a winding core ( 11 ), and which has connection means on its radially inner surface which cooperate with the holder ( 8 ) of the flange ( 1 ) in such a way that an actuation of the holder ( 8 ) is transmitted to the holding means of the adapter ( 14 ). 8. Flange according to claim 7, characterized in that the adapter ( 14 ) is detachably arranged on the flange ( 1 ). 9. Flange according to one of the preceding claims, characterized by a bore extending through the central or rotational axis of the flange ( 1 ) for receiving a holding and rolling shaft.