EP0017186B1 - Reel for filamentary material particularly wire, capable of being disassambled, and method of winding a filamentary material of such a reel - Google Patents

Abstract

A dismantable reel for wire coils includes first and second circular flanges. An annular channel is formed at least in the first flange and a hub is supported within the channel for axial movement relative to the flange. A plurality of expandable and retractable core segments depend from the hub and are selectively engageable with the outer surface of a wire coil to retain the coil within the reel. An axial core tube is supported concentrically within the hub and is movable axially relative thereto. Spreadable link members are disposed between the core segments and the axial core tube. A hollow axle is carried rotatably by the hub within the axial core tube. Such axle is also movable axially relative to the hub. The lower end of the axle is threaded and is cooperable with threads provided on the second flange whereby the second flange is releasably connectable therewith.

Description

The invention relates to a collapsible spool for strand-like material, in particular wire, consisting of a core with a plurality of spreading segments engaging on the inside of the winding and a flange connected to the core and a flange detachable from the core and with means for resiliently pressing a flange to the wrap.

When wire is drawn, the finished product, depending on the type of further processing, is wound on disassemblable spools or on so-called solid spools. Solid coils offer the advantage of high wire drawing speed during further processing. However, since the solid spool remains connected to the wire winding from the drawing machine to processing, many spools are required, which leads to considerable cost burdens, particularly in terms of warehousing and the return of empties.

That is why dismantling coils are used. In these, the flange carrying the folding core consisting of several segments is generally connected to the opposite flange by screw bolts. Before the wire reel is removed from this spool, the wire reel is packed by packing tapes into an intrinsically stable reel without a supporting carrier and transported on pallets. At the place of further processing, such a wire winding is carried out with a flyer with usual take-off speeds of up to 6 m / sec. subtracted to the last turn.

For this purpose, a decoiler is used, for example, as described in DE-OS 2 644 084 and is used for strip material formed into a roll, the end faces of the roll being irregular. In order to prevent the band to be unwound or pinched under tension, this decoiler has, in addition to a flange connected to the tie rod on the machine side, a spring-mounted flange arranged on the reel shaft, and when the reel is joined, the winding between the two flanges is to be compressed and the force exerted thereby be absorbed resiliently.

This arrangement cannot be readily transferred to a wire winding, since it is known that it is rounded on both end faces and this rounding cannot be removed by upsetting. If the highest curvature of the end face of the winding on both sides is exceeded when the wire is drawn off, there would be a risk that the system would be lost on the two flanges and there would be a risk of the wire being pinched and torn off. The resilient contact of both flanges is not guaranteed if, as in the previously known device, the upsetting process is limited by the spreading movement of the segments.

There is a need for wire coils transported without a support, such as a spool, at the point of further processing without a flyer, i. H. with the greatest possible working speed, e.g. B. in the order of 40 m / sec. To pull off a spool, the cohesion of the winding being reliably maintained up to the last position and thus constricting and tearing of the material to be removed is excluded.

This object is the invention in such a way that it creates a dismantled wire spool of the type mentioned, which is also particularly suitable as a payout spool, and allows the processing of carrier-free wire windings without problems even at the highest take-off speeds.

According to the invention, in the case of a collapsible coil of the type described in the introduction, the arrangement is such that the other flange is also provided with means for resilient pressing onto the winding. Such a spool is equally suitable for winding up as for pulling off the strand-like material, but without the spool being required for transporting the roll formed from the strand-shaped material. Due to the cushioning of both flanges, a considerably larger spring travel is available, so that particularly bulging windings on the end face can be processed without any problems.

A coil according to the basic principles of the invention can be constructed so that the hub of the flange connected to the core is rotatably and axially displaceably mounted on a hollow axis, and that a core axis tube is arranged on the hollow axis relative to it and is displaceable and with a Stop is provided, which engages between counter-stops arranged at an axial distance from one another on the hub of the core-side flange, which limits the axial relative movement between these parts, and that certain radially outwardly expandable core segments are provided for contact with the inner wall of the winding, which are provided with the core axis tube connected via parallel spreader arms and guided in radial guides attached to the hub, and that the hollow hub has a stop intended for axial contact on the outside of the hub of the core-side flange and a thread for screw fastening to the hub of the detachable flange at its other end , wherein this hub has a stop for axial contact with the core axle tube, such that by screwing the hollow axle to the releasable flange... there is tension between the two hubs and thus a spreading of the expansion segments, and finally stops on the core axis tube for attacking a are arranged axially from the core-side flange engaging in the coil lifting tool.

The invention also addresses the Task to apply a winding of strand-like material, in particular wire, to the special spool according to the invention in such a way that a reliable contact of the resilient flanges on the end faces of the winding ensures and the prerequisites for a trouble-free and rapid removal of the strand-like material from the coil are guaranteed.

'In accordance with the invention, the coil is gripped on the core-side flange with the detachable flange removed and its core is lowered into the end of the winding until the core-side flange rests on it, then a lifting tool is inserted into the coil from above, which is attached to the core axle tube Attack attacks, then is raised and first spreads the core segments against the inner circumference of the winding and, when the coil is lifted further, lifts it off the support and centers it on the releasable flange and then screws the hollow axle to the hub of the releasable flange.

In such a method, it is not necessary to provide additional measures or devices for applying the roll to the decoiler. Rather, the coil without the detachable flange is suitable for picking up the winding, for example from a pallet, and finally placing it on the detachable flange and centering it opposite it.

• Figur 1 das Einfahren des Spulenkerns in den auf einer Palette ruhenden Wickel im Längsschnitt ;
• Figur 2 das Absetzen des vom Kern aufgenommenen Wickels auf den lösbaren Flansch ;
• Figur 3 das Verbinden der beiden Flansche miteinander durch die Hohlachse und
• Figur 4 einen Schnitt nach Linie IV-IV in Fig. 3.

A preferred embodiment of the invention is described below with reference to the drawing. Here show:

• Figure 1 shows the retraction of the coil core in the winding resting on a pallet in longitudinal section;
• FIG. 2 deposition of the roll picked up by the core on the detachable flange;
• 3 shows the connection of the two flanges to each other through the hollow axis and
• FIG. 4 shows a section along line IV-IV in FIG. 3.

In the figures, the wire coil is only partially shown, since it is constructed essentially symmetrically to the central axis 1.

The coil shown in the drawings consists of the flange 3 connected to the core 2, which is provided with a reinforcing outer ring 4 and has lifting eyes 5 on its outside. In the central recess 6 of the flange 3, the hub 7 is inserted in such a way that its collar 8 abuts the annular wall 9 of the recess 6 and the annular surface 10 of the hub 7 of the corresponding annular surface 11 of the recess 6. Both are connected to one another by screw bolts 12 which are each surrounded by a helical spring 13 supported on the annular surfaces 10 and 11. The inner neck 14 of the hub 7 projects into the coil interior and carries on its radially inner side the two stops 15 and 16 and at the inner end a support 17 with a bearing plate 18. The bolts 12 are in the annular surface 10 of the hub 7 and on the support 17 screwed. Two lock nuts 19 are screwed on between this and the flange-side ring surface 11. On the radially inner side of the inner neck 14 of the hub 7, a roller bearing 20 is mounted on the stop 15, on which the outwardly projecting annular stop 21 of a hollow axis 22 is supported.

This hollow axis 22 is mounted in the core so as to be longitudinally displaceable. On its outer wall lies a core axle tube 23, which engages with its outwardly directed annular stop 24 in the space between the stops 15 and 16 of the hub 7 and in this way is axially movable to a limited extent. It carries a plurality, for example eight, core segments 26 via spreading links 25 arranged in pairs. The two parts 27 of each spreading link 25 are connected by bolts 28 to the eyelets 29 fastened to the core axle tube 23. The segment-side joint 30 of the upper spreading link 25 in FIG. 1 is radially displaceably mounted in a guide 31 of the bearing plate 18. In addition, the bearing pin 32 follows the movements of the support 17 triggered by the compression springs 13. The lower spreading links 25 'are constructed analogously to the upper ones, but without having radial guidance of the joint 30 on the segment side.

The core axis tube 23 has radially outwardly directed stops 33, which are accessible through corresponding windows 39 in the hollow axis 22, so that a lifting tool 55 can retract from the inside (see FIG. 2). At the lower end, the core axle tube 23 carries a stop ring 34 with an inner cone 35. In a corresponding manner, the lower end of the hollow axle 22 is provided with an outwardly directed cone 36, to which an external thread 37 is axially connected.

The detachable flange 40 of the wire spool shown in the drawing is also provided with an outer reinforcing ring 4 and an inward recess 6, the annular surface 11 of which faces the corresponding annular surface 10 of the hub 44, which is analogous to that of the hub 7 by means of screw bolts 12 are interconnected, each of which carries a compression spring 13. The inner ring 43 of the hub 44 serves the stop ring 34 of the core axle tube 23 as a counter stop when the core 2 is placed on the detachable flange 40. It rests on the inside of a threaded ring 47 provided with an internal thread 45 and an inwardly facing cone 46.

• Das Coil bzw. der Drahtwickel 50 ruht auf der vereinfacht dargestellen Palette als Unterlage 51 auf. Die an den Kranösen 5 aufgehängte Einheit aus Kern 2 und Flansch 3 wird in den Innenraum des Wickels 50 eingefahren, wie dies in Fig. 1 dargestellt ist. Hierbei wird die Nabe 7 durch die Druckfedern 13 in die obere Stellung angehoben, so daß die segmentseitigen Gelenke 30 der Spreizlenker 25 gleichfalls angehoben werden und das Kernachsrohr 23 in die Stellung nach Fig. 1 abfällt. Dadurch halten die Spreizlenker 25 die Kernsegmente 26 in ihrer dargestellten Einfahrstellung, d. h. die Kernsegmente 26 nehmen insgesamt einen minimalen Kreis ein. Schließlich gelangt der kernseitige Flansch 3 auf der oberen Stirnfläche 52 des Drahtwickels 50 zur Auflage. Das nicht dargestellte Krangeschirr wird aus den Kranösen 5 gelöst.

The wire coil works as follows:

• The coil or wire winding 50 rests on the pallet shown in simplified form as a base 51. The unit consisting of core 2 and flange 3 suspended on the crane eyes 5 is moved into the interior of the winding 50, as shown in FIG. 1. Here, the hub 7 is raised to the upper position by the compression springs 13, so that the segment-side joints 30 of the expansion links 25 are also raised and the core axle tube 23 drops into the position according to FIG. 1. As a result, the spreading links 25 hold the core segments 26 in their retracted position, ie the core segments 26 take up a minimal circle overall. Finally, the core-side flange 3 comes to rest on the upper end face 52 of the wire winding 50. The crane harness, not shown, is released from the crane eyelets 5.

A hoist 55, the hook of which is shown in FIG. 2, moves into the inner bore 53 of the hollow shaft 22, engages through the window 39 of this hollow shaft 22 into the turned stop 33 of the core axle tube 23. When lifting the hoist 55, the core axle tube 23 is raised first. As a result, the spreading links 25 are spread apart and the core segments 26 are brought into firm engagement with the inner wall 54 of the wire winding 50. When the crane hooks are raised further, the wire winding 50 is now lifted off the pallet 51 (not shown). In this position, it is finally, as shown in FIG. 2, placed on the loose flange 40. The stop ring 34, guided by its inner cone 35, overlaps the threaded ring 47 of the hub 44, and it comes to rest on the counter stop 43 of the hub 44 of the detachable flange 40. As a result, the core axle tube 23, even if it is now released by the hoist 55, is kept in the raised position, which further spreads the spikers 25 and keeps the core segments 26 in engagement with the wire winding 50. After the lifting gear 55 has been moved out, the thread 37 of the hollow axle can now be screwed into the internal thread 45 of the hub 44 until, due to the springing of the two flanges 3 and 40, the wire winding 50 is firmly clamped between them. In this position, the wire coil 50 can easily handle, e.g. B. turned and also used centered in a drain device and the wire can be pulled off at the highest possible speed. When the unwinding process is complete, the core segments 26 lose their resistance on the wire winding 50, so that the tension is released. By unscrewing the hollow shaft 22 from the hub 44 of the loose flange 40 of the wire coil, the latter can be disassembled for new use.

Claims (3)

1. Dismantlable bobbin for cord-like material, especially wire, comprising a core (2) with several core segments (26) engaging on the inner wall (54) of the reel (50) and a flange (3), connected to the core (2), as well as a flange (40) which is detachable from the core (2) and with means for resiliently pressing a flange against the reel (50), characterised in that the other flange is also provided with means for resiliently pressing against the reel (50).

2. Bobbin according to Claim 1, characterised in that the hub (7) of the flange (3) connected to the core is mounted in a rotatable and axially slidable manner on a hollow shaft (22) and that a core shaft tube (23) is located on the hollow shaft (22) so as to be rotatable and axially slidable relative to said hollow shaft, and is provided with a stop (24) which engages between counterstops (15, 16) which are located at an axial distance from one another on the hub (7) of the core-mounted flange (3), the said counter-stops limiting the axial relative movement between said parts, and that core segments (26) which are radially splayable outward and are intended to rest against the inner wall of the reel (50) are provided, which segments are connected to the core shaft tube (23) via parallel splaying controllers (25) and are guided in guides (31) provided in the hub (7), and that the hollow shaft (22) possesses a stop (21) intended for axially resting against the outer face of the hub (7) of the core-mounted flange (3) and also possesses, at its other end, a thread (37) for attachment by screwing onto the hub (44) of the detachable flange (40), the said hub (44) having a stop (43) for axially resting against the core shaft tube (23), so that by screwing together the hollow shaft (22) and the detachable flange (40), a stress between the two hubs (7, 44) and hence a splaying of the core segments (26) is effected and that, finally, stops (33) for engagement of a lifting tool (55), which penetrates axially into the bobbin from the core-mounted flange (3), are located on the core shaft tube (23).

3. Process for applying a reel (50) of cord-like material, especially wire, onto a bobbin constructed according to Claim 1 and 2, characterised in that the bobbin, with the detachable flange (4) removed, is gripped by the core-mounted flange (3) and is lowered, by its core (2), into the reel (50) until the core-mounted flange (3) rests against the end face (52) of the reel (50), thereafter a lifting tool (55) is introduced into the bobbin from above, which tool engages against the stops (33) provided on the core shaft tube (23), the lifting tool is then raised, and to start with the core segments (26) are splayed against the inner wall (54) of the reel (50), whilst, as lifting is continued, the bobbin bearing the reel (50) is lifted off the support (51) and set down in a centered manner on the detachable flange (40), whereupon the hollow shaft (22) is screwed to the hub (44) of the detachable flange (40).

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