DE7634166U1 - Reel for compact winding of wire - Google Patents

Description

FHIEDRlCH KOCKS Düsseldorf

Friedrich Kocks Company,
Freiligrathstrasse 1
4000 Dusseldorf

Reel for compact winding of wire i

The invention relates to a reel for compact winding of |

Wire in the form of a coil with a groove-like catch device t

for automatically catching and holding the advancing wire f

initially, with the catch groove in the area of the angle between coil |

mandrel and a spool flange and the spool mandrel on |

its entire circumference in a circular ring. |

Reels of the aforementioned type are able to process a large amount of wire

in the smallest space, because the individual wire windings are 1"

lie close together everywhere and no unnecessary hollow spaces remain . I

In contrast to other reeling devices, such as rotary j

basket reels, the problem arises when reeling in coil form, F

the wire start at the relatively high feed speed;

and fasten it to the spool quickly enough so that the \

for a perfect V7ickling required low tension already I

can be exerted during the first windings and thus makes it more susceptible to rolling— |

fertilizing can be avoided and a perfect wrapping pattern is created. |.

In a known reeling device, the spool flange, which is arranged on the side opposite the spool drive,

eccentrically mounted to the coil mandrel, so that between the surface ■ of the coil mandrel and a larger diameter recess of the
eccentrically mounted coil flange a circular arc-shaped,

A wedge-shaped gap remains, which serves as a catch groove for the j

Wire beginning is provided. In order to insert the wire end into this groove—'·■

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PIIIEDRICH KOCKS - ² - Dusseldorf

For feeding, a curved funnel-shaped insertion device is provided which can be folded out of the storage area of the coil as soon as the beginning of the wire has clamped itself. The clamping is to take place in that the beginning of the wire, guided by the funnel-shaped insertion device, enters the wedge-shaped catch groove and clamps itself there, which requires that the &Kgr;&Tgr;&lgr;&khgr;&Lgr; »wFrtiierO-vwirulirtVö-ii· iIac nr»Wt-»e Tnnhe^r iet· as &Lgr;-&idiagr;&ogr; ITmf anosopsphw) n-

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speed of the coil at this point.

This known design has the major disadvantage that the insertion and clamping of the wire often does not work, which results in considerable operational disruptions because the entire upstream system has to be stopped. Such disruptions are caused, for example, by the relatively small funnel opening of the insertion device not grasping the beginning of the wire at all, or by the wire not clamping itself in the catch groove because the speed between the reel and the upstream system is not exactly right. A further source of error is the funnel-shaped insertion device, which has to give the wire a different direction as it shoots in, which suddenly brakes it, causing it to make uncontrollable evasive movements and tending to form loops. The main source of disruption, however, is probably the fact that the wire can only be clamped in the wedge-shaped catch groove if the wire is pressed into it in its axial direction. This requires a peripheral speed of the coil at the moment of winding that is lower than the forward speed of the wire, so that the wire is braked sharply at the moment of clamping, which again brings with it the danger of sideways deflection and loop formation. This is not changed by an immediate acceleration of the coil in order to achieve the desired synchronization or low tension. In any case, the known design requires very precise speed control, which is

FRIEDRICH KOCKS - 3 - Dusseldorf

In practice and in the harsh conditions of metallurgical operations, it is unlikely that this can be maintained with the required reliability. This is particularly true for high wire speeds of over 100 meters per second.

In another known design, the catch groove is circular and completely surrounds the coil mandrel. However, this catch groove has a depth that extends in the axial direction of the coil mandrel. It is not wedge-shaped, but its width corresponds to the diameter of the wire. This is to be held in place by the centrifugal force that occurs, which pushes the beginning of the wire radially outwards and thus against one side surface of the axially extending catch groove. With this design, too, the clamping process is unsafe, especially at low speeds, because of the correspondingly low centrifugal force. In addition, the beginning of the wire must be inserted at a strong angle to the coil axis so that it can even reach the depth of the axially extending catch groove, so that the wire must be strongly deflected and thereby slowed down. Another disadvantage is that, due to the constant width of the catch groove, only wire with a certain diameter can be wound. In addition, the coil in this known design has no flanges, so that it can only accommodate a small amount of wire in a few layers.

The object of the invention is to create a reel of the type mentioned at the outset which reliably grasps the beginning of the wire and is suitable for high and low speeds while avoiding the disadvantages mentioned above.

This object is achieved according to the invention in that the catch groove extends its depth in the radial direction towards the coil mandrel, such that its side surface closest to the coil flange is essentially on the same plane as the inner surface of the coil

FRIEDRICH KOCKS - 4 -

Dusseldorf

flange and that at least one side surface of the catch groove is formed by a clamping ring that can be moved axially to the coil mandrel and relative to it or has clamping ring segments, whereby the beginning of the wire can be pushed back and clamped against the opposite side surface of the catch groove.

This avoids all threading problems, because the wire fed tangentially to the spool mandrel has a tendency, due to its own weight, to fall into the radial groove in the spool mandrel when it is guided into the area of the angle between the spool mandrel and the relevant spool flange. The latter can be reliably achieved without additional effort using the guide devices that are required and customary for such reels. Another particularly significant advantage is that the wire fed tangentially can move through the groove and beyond the spool mandrel for as long as desired without changing direction, without being slowed down or even hitting anything. It is even possible not to wind up the incoming wire at all, but instead to chop it into short pieces behind the spool mandrel, which may be necessary if the incoming wire is unusable for some reason and winding it up is therefore not worthwhile. There is also the advantageous possibility of only holding the wire in the catch groove when the spool is rotating at the required speed. If it has not yet reached the speed, the beginning of the wire can shoot unhindered through the catch groove without the upstream system having to be stopped or slowed down. Once the spool has reached the required synchronous speed, the wire can be tightened and the actual winding process can begin. The beginning of the wire that has advanced beyond the spool mandrel up to this point is cut off behind the spool mandrel so that it can no longer cause interference. In normal cases, however, care will be taken to ensure that the reel is

FHIB)RICH KOCKS - 5 - Dusseldorf

already rotates at the required speed before the
Wire beginning or even that a slight pull on the wire
is carried out so that any loop formation is avoided and a
perfect winding is guaranteed. Of course, with perfect wire, one strives to keep the wire beginning that shoots out over the spool mandrel as short as possible. This
This requirement is also advantageously met if the _reel is already rotating at the required speed before the beginning of the wire arrives and the clamping elements in the catching groove are activated immediately after the beginning of the wire arrives. Further advantages are that the catching is not dependent on indeterminate friction or centrifugal force values, but on firmly gripping clamping elements; that the reel does not need to be stopped at the beginning of the reeling in order to thread the beginning of the wire; that the wire diameter can be adjusted within very wide limits.
is freely selectable; since all materials with the inventive
reel, in many layers on top of each other, because large flange diameters can be provided.
In addition, very high winding speeds can be achieved and the synchronization difficulties which occur with the known designs, especially at the moment of threading, do not exist. A change in the direction of the wire when it is introduced into the catch groove j is also avoided, so that the resulting |

I Malfunctions do not occur* $.

Even if it is intended and preferred to have the catch groove in the area
the angle between the spool mandrel and a spool flange,
so it is basically also possible to attach the catch groove to a
other location on the coil dome.

It is recommended to use the clamping ring or the clamping ring segments
pneumatically or electromagnetically. Such an actuation device is particularly fast and enables very short j|

FRIEDRICH KOCKS - 6 - Dusseldorf

initial sections that extend beyond the column dome. These do not represent a significant loss, but can either be melted down immediately or serve as desired test pieces.

It is advisable to arrange the safety gear in the usual way at the end of the spool mandrel facing away from the reel drive. This results in design advantages, in particular more space for the safety gear and its operating device.

It is particularly advantageous if the spool flange arranged near the catching device, preferably in the area of its base, has one or more knives arranged distributed around the circumference, to which at least one stationary counter knife is assigned. In such an embodiment, the initial section of the wire protruding beyond the spool mandrel is cut off so that it can no longer cause interference. If it is possible to arrange the knives radially inwards around the spool mandrel, the initial section of the wire on the spool can be kept very short.

In a further embodiment of the invention, the spool flange equipped with one or more knives can have an inner surface that is inclined outwards away from the spool mandrel. In this case, a pressure roller for the wire can be provided in the area of the outwardly inclined inner surface of the knife-equipped spool flange. This pressure roller can be designed in such a way that it can be swivelled out of the storage area of the spool. The aforementioned embodiment avoids protruding knives that protrude into the storage area and still enables reliable cutting of the overhanging wire beginning.

In an expedient embodiment of the invention, the coil flanges have radially extending slots distributed around their circumference for binding the coiled wire, and in

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Radially extending support levers are arranged in the slots of the spool flange with the inclined inner surface, which can be adjusted to a vertical position and to a position inclined to the spool mandrel in accordance with the flange inner surface. With this design, the beginning of the wire can be reliably fed to the knives when winding begins, and the support lever can be fed to the spool mandrel when the beginning of the wire is in an inclined position. Once the beginning of the wire has been cut off, the support levers are moved to their positions perpendicular to the spool mandrel so that both end faces of the wound wire package extend perpendicular to the winding axis*

It is also very advantageous if the blades of the spool flange can be used together with the stationary counter blade or blades as chopping shears. This saves any additional shearing device in the area of the reel according to the invention, which is a significant economic advantage. On the other hand, it is also possible to dispense with the blades on the spool flange and instead to provide a separate known cutting device on the side of the spool mandrel facing away from the wire run in the area of the groove.

The invention is illustrated in the drawing using several embodiments. Showing:

Figure 1 shows a reel according to the invention in a front view, partly in section;

Figure 2 shows the reel according to Figure 1 in plan view and partly in section;

Figure 3 is a section along the line III-III of Figure 2;

Figure 4 Safety gear and actuating elements of a second embodiment in cross section;

Figure 5 Safety gear and actuating elements of a third embodiment in cross section.

FRIEDRICH KOCKS - &dgr; - Dusseldorf

In Figure 1, 1 designates a foundation on which a motor 2 stands, which drives a gear 4 via a coupling 3, which is also arranged on the foundation 1. The gear 4 serves simultaneously as a stand and bearing for the reel's spool, generally designated 5. The spool 5 consists of two spool flanges δ tind 7 and a spool mandrel 8, onto which wire 9 is wound. The spool 5 is held on the side facing away from the drive 2, 3 and 4 by a bearing stand 10« dx on a separate guide sbaun 11 driven by a working cylinder in the direction of the axis of rotation of the spool mandrel 8«

The drive-side spool flange 6 is firmly connected to the spool mandrel 3. The latter has individual segments Sa on its circumference, which can be spread apart or moved together in the radial direction using wedge pieces 13. For this purpose, the wedge pieces 13 are displaced in the axial direction by a device not shown, which is, however, known.

The bearing stand Io has a bearing bolt 14# which, with its front bearing pin 14a, holds the spool mandrel 8 on the side facing away from the drive 2, 3 and 4. * A front toothing 8b transmits the torque of the drive 2, 3 and 4 to a spool mandrel flange 8c which is mounted on the bearing bolt 14. The spool mandrel flange 8c is connected by means of screws in a rotationally fixed manner to a cylinder bush 16 and a front cover 15 as well as to the spool flange 7 and is rotatably mounted on the bearing bolt 14. To remove the wire bundle 9, the bearing stand 10 is moved axially, and with it all the parts mounted on the bearing bolt up to and including the spool mandrel flange 8c, which then comes into external engagement with the toothing 8b of the spool mandrel 8. The wire bundle 9 can then be easily removed from the spool mandrel 8 which is then mounted in a floating manner.

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The bearing pin 14 is enclosed in a pressure-tight manner by an axially displaceable ring piston 17. This creates two annular pressure chambers 17 and 19 between the bearing pin 14 and the cylinder liner 16, which can be pressurized or relieved with pressure medium, for example compressed air, via lines 20 and 21.

With the help of compressed air, the piston 17 in Figure 1 can be moved to the left, whereby it also moves a clamping ring 22 to the left, which is connected to the piston 17 via screws 23. If the clamping ring 22 is in its right-hand end position, its circular clamping surface facing the coil mandrel 8 essentially forms a plane with the inner surface of the coil flange 7. Together with the edge area of the end face of the coil mandrel 8 and the outer surface of the cylinder sleeve 16, a catch groove 24 is formed, which extends radially to the coil mandrel 8 and encloses it in a circular ring. In Figure 1, there is a wire section 9 in the catch groove 24, which is held in place by the clamping ring 22, which in turn receives its contact pressure from the piston 17, which is under pressure in the chamber 18. The wire section 9 is thus firmly clamped in the groove 24.

In Figure 2 it can be seen that the wire 9 is guided by a guide device, which is essentially known and is usual for such reels and is designated 25, into the angle between the spool flange 7 and the spool mandrel 8 and thus reaches the catch groove 24. The leading wire start is pressed by a pressure roller 26 against the inner surface 27 of the spool flange 7, which is designed to be inclined to the spool mandrel 8. The wire 9 thus comes into the area of knives 28, which are arranged on the outer circumference of the flange 7. They work together with a stationary knife 29, so that the wire 9 is cut off. The pressure roller 26 can be

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HUEDRICH KOCKS - 10 - Dusseldorf

with the aid of a working cylinder 30, swing it back into the position shown in dash-dotted lines outside the storage area of the coil 5, where it remains after the leading wire beginning has been cut off until the end of the winding process.

In order to ensure that, despite the inclined inner surface 27 of the flange 7, a wire bundle is formed which has end faces extending perpendicularly to the coil axis on both sides, support levers 31 are provided which, after the beginning of the wire has been cut off, are pivoted into the operating position shown in dash-dotted lines. This is done with the help of the working cylinder 32, which can be seen in Figure 3. The cylinder 32 is attached to the coil flange 7 and rotates an adjusting ring 33 which adjusts the levers 31 via obliquely arranged elongated holes 34 and sliding pieces 35 guided therein.

In Figure 3, the total of four knives 28 can also be seen, as well as the stationary knife 29, whereby the cutting off of the leading wire beginning can be clearly seen. The function of the pressure roller 26 is also clear. In Figure 3, it can also be seen that the guide device 25 can guide the wire 9 in all seals. This is done by guide rollers 25a and a guide groove 25b. The latter only serves to guide the wire beginning j Ij at the start of winding and is then folded down into the rest position shown in dash-dotted lines as soon as the wire beginning is tightened. Finally, in Figure 3, the radial slots marked 36 can also be seen, which are arranged in the flange 7 and are used to bind the finished wire bundle before it is pushed off the spool mandrel 8.

The wire can be pushed off the spool mandrel 8 after the bearing stand IO is moved away from the spool mandrel 8 by actuating the working cylinder 12 accordingly, whereby the bearing bolt 14, the flange 7 and the safety device are also moved to the side.

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In Figures 4 and 5, comparable parts are designated with the same reference numbers as in Figures 1 to 3.

The embodiment according to Figure 4 differs essentially from the embodiment according to Figures 1 to 3 in that the clamping ring 22 delimits the catch groove 24 on the side facing the coil mandrel 8 and that the clamping ring 22 is actuated by a working cylinder 37 via a push rod 38 which is arranged inside the bearing bolt 14. The tensile force of the cylinder 37 is transferred to the clamping ring 22 via pressure elements 39 and an axial bearing 40. Compression springs 41 which are arranged distributed around the circumference are used to release the clamp.

In the embodiment according to Figure 5, the clamping ring 22 is pushed into the groove 24 with the help of levers 42, again via axial bearings 40 and via a threaded ring 43 which is screwed onto a threaded bushing 44 of the bearing stand 10. A working cylinder 45 can rotate the threaded ring 43, which is thereby displaced axially and carries out the clamping process.

In addition to the embodiments described above, numerous other constructions are conceivable that make use of the principle according to the invention.

Claims (10)

nUEßftlCS KOCKS - 12 - μgr; 450 Düsseldorf she/Hei. 18.1O.1976 &Bgr;?* &iacgr;&ogr;&EEgr;&EEgr;&rgr; sayings &igr; 1" Reel for compactly winding wire in the form of a coil with a groove-like catching device for automatically catching and holding the leading wire start, the catching groove being arranged in the area of the angle between the coil mandrel and a coil flange and sealing the coil mandrel in a circular ring shape over its entire circumference, characterized in that the catching groove (24) extends with its depth in a radial seal around the coil mandrel (8) in such a way that its side surface closest to the flush discharge (7) essentially forms a plane with the inner surface (27) of the coil flange (7) and that at least one side surface of the catching groove (24) is formed by a clamping ring (22) which is axially displaceable to the coil mandrel (8) and relative to it, or has clamping ring segments, with which the wire start can be pressed and clamped against the opposite side surface of the catching groove (24). 2. Reel according to claim 1, characterized in that the clamping ring (22) and the clamping ring segments are driven pneumatically or electromagnetically. 3. Reel according to claim 1 or 2, characterized in that the catching device (17 to 22) is arranged in a known manner on the end section of the spool mandrel (8) facing away from the reel drive (2,3,4). 4. Reel according to claim 1 or one of the following, characterized in that the spool flange (7) arranged in the vicinity of the catching device (17 to 22), preferably in the region of its edge, has one or more knives (28) distributed around the circumference, to which at least one stationary counter-knife (29) is assigned. - 13 - locxs-13- ! OOsstidorf e 5. Reel according to claim 4, characterized in that the spool flange (7) equipped with one or more knives (2S) has an inner surface (27) inclined outwards away from the spool mandrel (8)» 6. Reel according to claim 5, characterized in that a pressure roller (26) for the wire (9) is provided in the region of the outwardly inclined inner surface (27) of the knife-edge spool flange (7). 7* Reel according to claim 6, characterized in that the pressure roller (26) can be pivoted out of the storage area of the coil (S)» » Reel according to claim 5 or one of the following« characterized in that the spool flanges (6, 7) have radially extending slots (36) distributed over their circumference for binding the spooled wire (9) and that support levers (31) extending radially are arranged in the slots (36) of the spool flange (7) with the inclined inner surface (27)», which can be adjusted to a vertical position and to an inclined position corresponding to the planar inner surface (27) relative to the spool mandrel (8). 9* Reel according to claim 4 or one of the following, characterized in that the blades (28) of the reel flange (7) together with the stationary counter blade(s) (22) can be used as chopping shears. 10. Reel according to claim 1, 2 or 3, characterized in that a separate known cutting device is provided on the side of the spool mandrel (8) facing away from the wire feed in the region of the catch groove (24).