EP0029971A1 - Method for winding wire on wire holders, and wire holder for taking up the wire - Google Patents

Abstract

The invention relates to a method for winding wires on wire carriers and a device for carrying out the method in such a way that wire containers with a conical arrangement of at least the inner wire layer (4) are formed, so that for further processing the wire (3) from inside the Container can be removed without influencing adjacent wire windings, with the wire carrier being at least partially removable, at least partially, or at least its core (2) being removable or the core (2) being displaceable to remove the wire (3) from the container a cavity (22) is formed between it and the container, through which the wire (3) can be pulled off and in which the core (2) and, if appropriate, a plate (24) arranged on the upper wire layers, which entrains the wire (3) should prevent from the upper turns of the wire (23) during the removal process, can also be part of the wire carrier and these parts also part with or without an additional sheathing r Provide packaging for the wire so that the wire in the container does not change its position when the container is transported from one location to another, in particular from the winding location to the processing location.

Description

The invention relates to a method for winding wires onto wire carriers, also called a coil for the sake of simplicity.

According to the prior art, the wires are wound on coils with a cylindrical core, and the resulting wire bundle accordingly has cylindrical wire layers.

Coils with a slightly conical core are also known. However, the wire is also wound in cylindrical layers on these coils. These coils are mainly used for winding lacquered wires, which during the subsequent winding operations are wound up from the outside inward at relatively high speeds from these coils overhead. The taper serves the purpose of preventing the wire layers from trickling down when the spool is stationary and offers the possibility of using a smaller spool diameter on the take-off side, which makes it easier to pull off the head.

In the case of very thick wires, which are, for example, in a diameter range of approximately 8 mm, it is also known if the coils are designed to be divisible, to remove the coil after the winding-up process and to unwind it from the inside out.

The winding of the wire in cylindrical layers has the disadvantage that the wire turns of one layer all have the same diameter. Since the coils loosen during unwinding, there is a risk that they fall down and slide over each other, which inevitably leads to wire confusion and wire breaks.

This is particularly so because in most cases the coils or wire bundles are arranged in such a way that the winding axis is vertical or almost vertical when unwinding.

When unwinding cylindrical wound wire bundles there is also the disadvantage that if the wire package has been unwound so far that only a few wire layers are left, they collapse due to insufficient cohesion, become confused and can therefore no longer be used up. This means that this wire residue can no longer be sent to further processing and is generated as scrap.

In addition, the continuous operation desired for economical further processing is not possible.

In addition to the difficulties already mentioned, there is the problem that, when unwinding from the inside to the outside due to the existing winding tensions, wire windings that are to be pulled off are pinched by the next wire layer. This also leads to wire breaks, particularly in the case of thin wires.

The object of the invention is to provide a method in which the wire is wound in such a way that it can be pulled off the coil or from a container without the risk of being confused up to the last wire winding.

This object is achieved by the winding process of the characterizing part of claim 1.

To pull off the wire, you will set up the coil so that the larger core diameter points upwards. Then you can remove the coil flange and the core and pull the wire out of this funnel-shaped opening.

Due to the conical shape of the individual wire layers, it is impossible for the wire windings that are being pulled off or loose wire windings to slide downwards because they are supported on the next wire layer. In addition, the opening diameter, which increases in the pull-off direction, makes it impossible to clamp individual wire windings. Compared to wire coils with coiled layers, this also applies if the wire windings are drawn from bottom to top, since the wire winding to be pulled off has a smaller diameter than the one above it.

Removing the core during further processing is not mandatory. It is also sufficient to move the core in the axial direction so that a gap is created between the core and the innermost wire layer, through which the wire is pulled out of the container.

In order to pull off the wire, the coil axis or the axis of the container need not be arranged vertically if thicker wires have been wound up. Due to the inherent tension, the windings remain in their place in this case even if the container is aligned with its axis, for example horizontally.

In principle, the choice of the taper of the wire layers or the coil core is arbitrary. However, they can be optimally designed depending on the thickness of the wire and the winding diameter.

Due to the taper of the wire layers, the running speed of the wire changes when winding each layer. For this reason, control measures are provided to keep the running speed of the wire constant.

Details in this regard can be found in the subclaims.

In order for the wire container to assume a cylindrical shape on the outside, which is favorable for transport and packaging reasons and with regard to the filling weight, but also in order to obtain stacked containers, the wire layers must be shortened when they have reached the outer winding diameter of the container so that only the unoccupied space inside the cylinder is filled with wire. For this purpose, measuring and control devices are provided which sense the reaching of the maximum winding diameter and reverse the running direction of the laying device at the appropriate moment.

The coil on which the wire is wound may have a conical core. However, it is also possible to use a commercially available divisible coil with a cylindrical core, over which a conical sleeve is pushed, which is then suitably fastened to the core or the flanges of the coil.

If the wire is wound up using a flyer, the core only has to endure the winding pressure. In this case the core came from cardboard or a solid cardboard box, as did the flanges. If the wire is wound up by rotating the spool itself, spools made of conventional materials will be used.

The wire container can be transported with or without a wire carrier. In both cases, it can be advantageous to protect the wire against corrosion or other influences by packaging made of paper, plastic, cardboard or the like. If the container is transported without a wire carrier, it is necessary to secure it against slipping of the individual wire layers or turns. This can be done either by tying the wire bundle by means of plastic, steel or the like, or by shrink-wrapping the wire package with a suitable plastic film. Another variant is to maintain or insert a conical core sleeve, which can advantageously be made of cardboard or the like. In these cases, shrink packaging or cardboard packaging is again suitable. Expediently, packaging and transport means are selected or designed in such a way that they represent, in whole or in part, the wire carrier for the winding and the necessary device for the unwinding.

For example, it is possible to fasten the conical core sleeve made of cardboard, plastic or the like on a Euro pallet together with the outer packaging, which can be made of cardboard, with a fixed or removable upper limiting disk. This unit is then inserted into a winding device, the wire being wound up using a rotating flyer. The outer packaging jacket is located underneath the wire package during the winding process and is then pulled up or folded up over the wire bundle and closed at the top. However, it is also possible to arrange only the winding tube with the upper limiting disk on the pallet and then to push the packaging jacket from above over the wire container, which Wrapping, shrinking or transporting wire containers without outer packaging.

Since the upper coil flange is removed to pull off the wire, the edge turns are exposed here. In order that these turns are not carried away when the wire is pulled out, in a further embodiment of the invention, an annular plate is placed on these turns, which, due to its own weight, prevents the upper turns from being pulled up, or a plate which is jammed with the lower support or other suitable means .

The plate itself can also be formed by the upper part of a packaging box, which, however, should then have a wear-resistant ring or the like, so that the wire does not cut into the edge of the box when it is pulled out.

Further details of the invention can be found in the subclaims and the following description of the drawing.

• Fig. 1 eine Darstellung des Wickelvorganges;
• Fig. 2 einen Schnitt durch eine vollgewickelte Spule;
• Fig. 3 ein Drahtgebinde ohne Spule;
• Fig. 4 eine schematische Darstellung des Abwickelvorganges;
• Fig. 5 die Draufsicht auf die Fig. 4;
• Fig. 6 ein verpacktes Drahtgebinde in Seitenansicht;
• Fig. 7 die Draufsicht auf die Fig. 6:
• Fig. 8 eine Darstellung des Abwickelvorganges bei Verwendung von zwei Drahtgebinden im kontinuierlichen Betrieb;
• Fig. 9 die Draufsicht auf die Fig. 8.

Show it:

• Figure 1 is an illustration of the winding process.
• 2 shows a section through a fully wound coil.
• 3 shows a wire container without a coil;
• Fig. 4 is a schematic representation of the unwinding process;
• Fig. 5 is a top view of Fig. 4;
• 6 shows a packaged wire container in a side view;
• 7 shows the top view of FIG. 6:
• 8 shows a representation of the unwinding process when two wire bundles are used in continuous operation;
• 9 is a top view of FIG. 8.

1, a wire 3 is wound up in layers on a coil 1 which has a conical core 2. The innermost layer 4 lies against the core between the coil flanges 10 and 11 and therefore also has a conical shape. The next layer 5 lies on the layer 4 and therefore again has a conical shape. The wire is wound between the flanges 10 and 11 of the coil 1 in this way until the line 6 has been reached, at which the wire has approximately reached the outer edge of the coil flange 11. From here, the wire is wound in shortened layers, but still conically, until the container, as indicated by line 7, has assumed a cylindrical shape on the outside.

Fig. 2 shows the coil 1 fully covered with wire.

It can be seen that the radius of the wire turns changes from turn to turn in each wire layer. This results in considerable fluctuations in the running speed of the wire with a constant running speed of the coil or the flyer. In order to compensate for these fluctuations, it is possible to provide known measuring and control devices, not shown, which either regulate the running speed or the Temporarily store wire in a magazine known per se.

When using a wire storage device, the coil or the flyer rotates at a speed that corresponds to the wire speed of the wire layer to be wound in the middle between the two limiting flanges of the wire carrier. When a wire layer is further wound in the direction of a decreasing winding diameter, less wire is taken up by the coil, while wire is delivered by the drawing machine or other upstream devices at a constant speed. During this phase, the wire that is not taken up by the coil is taken up by a magazine that has a variable capacity. If the middle point between the limiting flanges is exceeded when the next wire layer is wound towards the increasing winding diameter, more wire is taken up by the coil than is supplied by the upstream devices. This additional wire requirement is now compensated for by the fact that the wire accumulation in the magazine is reduced again. This process is repeated with every wire layer. The basically required speed reduction due to the increase in winding diameter due to each wound wire layer can be done in a conventional manner by a controllable drive.

Both measures will advantageously be provided according to the invention, because particularly strong changes in running speed occur in the conical winding, i.e. via a controllable drive for the wire carrier or the flyer, both the required speed reduction due to the constant winding diameter increase and the partial compensation when winding a wire layer due to the conical winding surface causes. To the speed differences between the largest and smallest winding diameter one To keep wire position within limits, the balancing effect of a so-called breathing memory described above is superimposed.

Fig. 3 shows a wire container, in which the
Coil with core has been removed. The wire container has been shrink-wrapped with the aid of a film 12, either all around or without the conical inner opening. In the latter case, a rapp sleeve 13 will be pushed into the interior of the container in order to give the inner wire layer a secure hold for transport purposes and to use the core sleeve as a wire guide funnel during unwinding. A core sleeve can also be used with shrink wrapping on all sides.

The end piece 15 of the wire has been placed from the last turn 16 around the outside of the wire container and then also introduced into the inside of the container, so that a wire supply 17 is also present here. The wire supply 17 can also be wrapped around the bundle in several windings. This wire end 17 is welded to the starting piece of a new container during further processing of the wire in order to ensure continuous further processing of the wire.

Fig. 4 shows the further processing of the wire in a schematic representation. The end piece 17 of the wire has been welded to the start piece 19 of another container at point 18. The starting piece 14 of the wire is pulled up out of the container. For this purpose, either the upper coil flange 11 together with the core 2 can be pulled out of the container. It must be detached from the lower coil flange 10. If the container was shrink-wrapped, it is sufficient to simply remove this packaging.

4 is the core 2 with the help of a fal tenbalges 20 connected to the lower coil flange 10 so that it can be moved slightly in the direction of arrow 21.

The displacement and attachment of the core sleeve for the purpose of displaying a wire guide gap can also be done in another suitable manner.

This displacement creates a space 22 between the core 2 and the innermost layer 4 of the wire, through which the wire 5 is drawn off.

The conical core sleeve can also be present at the further processing location and can be used before the unwinding process begins in such a way that the gap 22 shown in FIG. 4 is formed.

The sleeve used in this way serves as an Eilliruii stricliter for the wire and prevents entire wire windings from being pulled out of the bundle or that wire windings contract and form loops which lead to wire breaks.

The wire peels off in layers, i.e. the gap 22 becomes larger after each stripped layer and the wire supply correspondingly smaller. If the outer cylindrical edge of the wire container is reached, the height of the wire container will also decrease from layer to layer.

A plate 24 is placed on these windings so that the upper wire turns 23 are not carried away when pulling off. This can act through its own weight or a lighter plate can be connected in a modified version to the lower flange 10 with the aid of a clamping device. As can be seen from FIG. 5, the plate 24 is annular and can have a slot 25.

It is extremely advantageous not to interrupt the work process during further processing by replacing the used wire container with a new one when a wire container has been used up. Therefore, a continuous unwinding process is advantageously provided. For this purpose, two wire containers are set up at the unwinding station according to FIG. 8. Both wire containers are provided with a cover ring 50, 51, which each contain a passage slot 52, 53 for the wire. During the normal unwinding process, it is advantageous to close these through slots in such a way that a closed, smooth inner ring results, since otherwise there is a risk that the wire will be damaged at this point. At the time of transferring the wire from the used to the full wire bundle, both slots are opened and immediately closed again. 8, the left bundle of wires is currently being unwound. The end of this collar is led up inside the outer shell and connected to the beginning of the right wire bundle by welding or the like. As soon as the last wire turn of the left bundle is pulled out, the wire inevitably runs through the then opened slot in the left cover ring and through the guide slot 54 provided between the two cover rings into the interior of the right bundle of wires, and the wire is then further removed there. During the unwinding process for the right bundle, a new wire bundle is set up on the left side, the beginning of which is connected in the opposite way to the end 57 of the right bundle of wire that has already been brought out. If the right wire bundle is used up, transfer to the left side in the same way.

Another variant with regard to continuous operation is to use the last wire winding of the used wire bundle to cover the entire cover ring Close the full wire container and place it there for the further cover. In this case the cover ring has no slot. The start and end of the wire are connected in the manner illustrated with reference to FIG. 8 and as described there.

6 and 7 show an embodiment in which the container 30 is arranged on a euro pallet 31. The lower flange 32 of a coil is fixedly arranged on the euro pallet, for example glued or screwed, or the pallet itself forms the lower limit for the wire package. At the same time, the euro pallet 31 carries a hexagon-shaped sleeve 33 fastened to it, which serves as packaging for the wire container. The outer packaging sleeve can be designed such that it is unfolded during the winding-up process in the lower level of the pallet, as shown in FIG. 6 with the position 36 in broken lines. In order to reduce or prevent the packaging from protruding beyond the edge of the pallet in this state, this outer sleeve can advantageously be designed to be foldable. The packaging sleeve with the top cover 34 can also be pushed over the wire container from above and fastened to the bottom of the pallet after the winding process.

At the top, the container is covered with hinged lids 34, which carry a reinforced edge 35, over which the wire can be pulled off. The lid can also consist of one piece. The cover 34 and the reinforcing edge 35 replace the plate 24 according to FIG. 4 in this embodiment.

Instead of the reinforcement edge, a wear-resistant ring can also be pushed over the edge of the lid before further processing of the wire.

Claims (32)

1. Method for kicking wires on wire carriers, characterized by the use of a wire carrier (coil (1)) with a conical core (2), on which the wire (3) is wound in layers until it has reached the maximum winding diameter, and thereby that from here the wire is wound in shortened layers, so that there is an outer cylindrical shape for the container. 2. The method according to claim 1, characterized in that the wire, as known per se, is wound up with the aid of a flyer and / or a rotating spool and that the running speed of the wire is kept constant by changing the speed of the flyer and / or the spool. 3. The method according to claim 1, characterized in that the wire, as known per se, is wound up with the aid of a flyer and / or a rotating spool and that the supplied wire passes through a changeable, so-called breathing memory in order to keep its running speed constant Changes in the peripheral speed of the winding surface can be compensated for by changing the memory content. 4. The method according to claims 2 and 3, characterized in that the running speed of the wire is kept constant both by regulating the speed of the coil and / or the flyer and by storing the wire in a magazine. 5. The method according to claim 1, characterized by the use of a measuring and control device, which when the maximum winding diameter is reached, the running direction of the wire laying device can be reversed. 6. The method according to claim 5, characterized in that the measuring and control device optically scans the maximum kick diameter. 7. The method according to claim 5, characterized in that the measuring and control device responds to the speed of the coil and / or the flyer or to the tensile force of the wire during the winding process. 8. Coil for performing the method according to claim 1, characterized in that it is divisible and that the coil can be removed completely or partially together with the core from the wound wire container. 9. coil for performing the method according to claim 1; characterized in that the core is displaceable in the axial direction. 10. Coil according to claim 9, characterized in that between the core (2) and the abutting at the smaller diameter end of the core flange (10) by a certain amount compliant connecting means, preferably in the manner of a bellows (20) or the like between the flange (10 ) and core (2) are provided. 11. Coil for performing the method according to claim 1, in which the wire is wound with the aid of a flyer on the core, characterized in that the core and optionally the entire coil consists of cardboard, a solid cardboard, wood, plastic or the like. 12. Coil according to claim 11, characterized in that it is on a pallet, e.g. Euro pallet (31) is attached. 13. Coil for performing the method according to claim 1, characterized in that a conical sleeve is pushed over the cylindrical core of a commercially available divisible coil, which is connected to the core and / or the flange. 14. A wire container wound according to the method of claim 1, characterized in that the container is shrink-wrapped all around with the aid of a plastic film or the like. 15. A wire bundle wound according to the method of claim 1, characterized by a sheathing and optionally an additional conical cardboard sleeve (13) as the core. 16. A wire container wound according to the method of claim 1, characterized by a cardboard packaging. 17. Wire container according to claim 16, characterized in that the cardboard packaging is firmly arranged on a pallet, preferably Euro pallet. 18. A method for further processing a wire bundle wound according to claim 1, characterized in that the coil core together with the flange at the larger diameter end of the core is pulled out of the wire bundle and the wire is pulled out of the resulting cavity during further processing. 19. A method for further processing a wire bundle wound according to claim 1, characterized in that the flange lying against the larger diameter end of the core is removed, that the core is axially displaced so that a gap is formed between the core and the innermost wire layer of the bundle and that the wire is pulled out of the container through this gap. 20. The method according to claim 18 or 19, characterized in that an annular plate (24) or the like is placed on the exposed turns at the end of the container. 21. The method according to claim 20, characterized in that a weight-heavy plate (24) is used. 22. The method according to claim 20, characterized in that the plate (24) is clamped with the remaining coil flange. 23. The method according to claim 21, characterized by the use of a plate (24) with a radial or approximately radial slot (25) through which the wire end of the container is pulled during continuous operation. 24. The method according to claim 20, characterized by the use of a closable slot which, in the closed state, ensures an annular outlet for the removal of the wire. 25. The method according to claim 20, characterized in that the plate is moved in continuous operation from one container to the next. 26. The method according to claim 20, characterized in that the plate is formed by a part (34) of a packaging box. 27. The method according to claim 26, characterized in that the packaging carton has a wear-resistant ring (35) over which the wire runs when pulled off. 28. The method according to claim 27, characterized in that the wear-resistant ring is subsequently placed or pushed onto the edge of the carton. 29. The method according to claim 1, characterized in that the packaging means are used at least partially at the same time for winding and unwinding the wire. 30. The method according to claim 29, characterized by the use of a conical core sleeve made of cardboard, plastic or the like with a fixed or removable limiting disk and in that, if necessary, the core with the outer packaging means, such as a cardboard, is attached to a plate, in particular a Euro pallet . 31. The method according to claim 30, characterized in that the outer packaging means are pulled down during the winding-up process or folded down and after the winding-up process are withdrawn or folded up to then be closed at the top. 32. The method according to claim 29, characterized in that the packaging jacket is pushed over the container after the winding process.

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