EP0988121B1 - Unwinding adjustment device for wire or materials containing several wires - Google Patents

Abstract

An unwinding device for wire or materials containing several wires, having a rotating support for a reel, a coil or the like and a folding roller allocated to a processing device. According to this invention, a dancer is positioned between the support and the folding roller. A constant direction for unwinding and winding is maintained in such as way that the unwound or wound material is directed along the same plane of curvature as the curvature of the reel devoid of torque.

Description

The invention relates to an unwinding device for wire or multi-wire material with a rotatable receptacle for a coil, a coil or the like and with one a bending roller associated with a processing device.

Unwinding devices according to the preamble of claim 1 are known, e.g. from EP 0 340 322 A1 serve a wound good, e.g. B. a wire from a coil, a coil or a reel to feed a processing device, wherein the Unwinding by a drive and a fixed and one for application a pretensioning force variable position deflection roller while maintaining the Direction of curvature occurs.

The object of the invention is to unwind from a coil, a coil or the like. to perform such that the respective good with constant properties can be fed to a processing device, d. H. one To create a judge.

This task is performed by an unwinding judge with the characteristics of Claim 1 solved.

Advantageous embodiments of the invention are set out in the subclaims remove.

The invention provides a uniform change in direction Maintaining the original coil or wire curvature multi-wire goods, a defined elastic change of direction or Redirection through the appropriate pulleys, a predictable and constant one-dimensional curvature of the wire or multi-wire Good after the elastic-plastic deflection / bending on the bending roller, an optional generation of a reverse train by the wire or Multi-wire shaped bending roll and / or wrapped by more than 180 ° through the use of a deadlock, a safe exclusion of twists, Helicities, twists, twists of the wire or multi-wire good, since torsional moments that cause this Create effects due to the ideally defined distances between the rollers are minimized, as well as a very simple and quick at the respective Diameter of the respective good and the corresponding material of the wire or multi-wire goods as well as existing and Flow-out conditions adjustable structure of the unwinding unit reached.

Fig. 1

einen Abspulrichter in Seitenansicht;

Fig. 2

den Abspulrichter gemäß Fig. 1 in Richtung des Pfeils a in Fig. 1 gesehen.

Fig. 3

einen Totrichter.

The invention is explained in more detail below using an exemplary embodiment with reference to drawings, the drawings only showing basic sketches, for which reason the distances shown should not be used to interpret the claims. It shows:

Fig. 1

a winder in side view;

Fig. 2

seen in the direction of arrow a in Fig. 1.

Fig. 3

a dead judge.

The unwinding judge has a stand 1, which in the exemplary embodiment a base plate 2, a cover plate 3 and columns arranged therebetween 4 exists. The columns 4 are in the embodiment as three in a row arranged pairs of columns 5, 6 and 7 executed. The columns 4 are on any known way connected to the plates 2, 3. It can out For reasons of stability, a different number of columns 4 may also be provided.

On the stand 1, a receptacle 8 is attached, which is arranged horizontally arranged coil 9, a coil or a reel is used. The recording 8 can on the pair of columns 5 or on one column 4 of the pairs of columns 5 and 6 or, if appropriate, also be fastened to a plurality of columns 4. The recording 8 is provided in the embodiment with a drive 10 through which the Coil 9 is rotatable. The receptacle 8 is preferably on the columns 4 height adjustable and lockable in any position. Between the columns 4 of the middle column pair 6 is in the area of the cover plate 3 at least one freely rotatable deflection roller 11 is mounted. In the embodiment are three deflection rollers 11 that can freely rotate on a common axis 12 arranged. A dancer 13 is up and down between the columns 4 of the column pair 6 arranged movably. It has a frame 14 with freely rotatable wheels 15, the wheels 15 rolling on the columns 4 of the column pair 6 can and are guided through them, with none or otherwise designed tours are possible. In frame 14 is - preferably centrally - one Axis 16 arranged on the adjacent and each freely rotatable at least one deflection roller 11 - in the exemplary embodiment three are shown-arranged are. The number of deflection rollers 11 in the area of the cover plate 3 is adapted in the dancer 13. The dancer 13 is designed so that it weights symmetrical along its vertical axis (not shown) can record.

A holder 17 can be moved and locked on the last pair of columns 7 arranged in which a rotatable bending roller 18 is mounted. in the Embodiment is also a processing device on the holder 17 19 arranged in the form of a straightener.

wobei d der Durchmesser, E der Elastizitätsmodul und R_p0,2 die technische Dehngrenze des draht- oder mehrdrahtförmigen Gutes ist. Zur Erzeugung einer konstanten Krümmung des draht- oder mehrdrahtförmigen Gutes in der Krümmungsebene beträgt der Durchmesser der Biegerolle 18

The distance A of the receptacle 8 for a coil 9 to the first deflection roller 11, and from the deflection roller 11 to each subsequent deflection roller 11 and from the last deflection roller 11 to the bending roller 18 and from the bending roller 18 to the processing device 19 corresponds to the condition A = or <π D , where D is the respective diameter of the coil 9 or the upstream deflection roller (s) 11 or the bending roller 18. The diameter of each deflection roller 11 is for the defined elastic deflection of the wire or multi-wire material

where d is the diameter, E is the modulus of elasticity and R _{p0.2 is} the technical yield strength of the wire or multi-wire material. In order to produce a constant curvature of the wire or multi-wire material in the plane of curvature, the diameter of the bending roller is 18

By matching the diameter of the roller (s) 11 to the diameter and the material properties of the wire or multi-wire material only an elastic deflection succeeds.

The bending roller 18 can be provided with a device, not shown, for application be provided with an additional torque. The torque can can be applied both as drive and braking torque. As A device for applying a drive and a braking force can be a - Preferably different and adjustable torques transmitting reversing motor be used. In the event that only braking torques A mechanical braking device can also be transmitted can be provided, preferably in each case dynamometer and controller for Monitoring and automatic compliance with a specified action force can be provided. Any known devices can be used for this purpose are used so that they are not described in detail here.

With the use of the bending roller 18 as a combined bending and braking roller Stretch bending straightening technology applicable. In addition to the in the straightener impressed bends superimposed a tensile stress, whereby the forward move through the necessary transportation of the goods and the Reverse pull is realized by the braking action of the bending roller 18.

Alternatively, a dead judge 20 can also be used to generate a reverse pull (Fig. 3) find application. This is immediately between the bending roller 18 arranged in front of the processing device 19 and contains three rotatable mounted rollers 21, 22, 23, two rollers 22, 23 the same Have diameters and are attached to a carrier element (24). The Carrier element 24 is circular and rotatable about its central axis 25, wherein the rollers 22, 23 are arranged symmetrically to one another and to the central axis 25 are. The carrier element 24 is about its central axis 25 by means of a any adjustment device 26 rotatable in both directions arranged. If the carrier element 24 is rotated about its central axis 25, changes on the two rollers 22, 23 applied to it Wrap angle and consequently the backward pull.

For rotationally symmetrical cross sections, which generally refer to the relevant apparatus has the production and use of Forward and backward trains result in the emergence of a asymmetrical stress distribution in the target is counteracted. By setting a balanced ratio of the shares of Bending and pulling on the overall deformation succeeds essentially Quality, especially the straightness or curvature of the wire or to improve multi-wire goods.

The device works so that the wound on the coil 9 good, z. B. a wire 27 unwound from the coil 9 by switching on the drive 10, passed over the first deflection roller 11 on the cover plate 3, deflected there and a deflection roller 11 is supplied in the frame 13. If applicable, takes place in appropriate guidance, the further looping of further deflection rollers 11 each in pairs on the cover plate 3 and in the dancer 13. Finally, the the last deflection roller 11 in the dancer 13 looping end of the wire 27th the introduction roller 18 and, via this, the processing device 19 fed.

The drive controlled by the dancer 13 ensures the feed in the downstream processing device 19 regardless of the coil weight with constant force. The weight of the dancer is not only building in the direction of the Deduction, but also in the direction of unwinding a constant Tensile stress on the material to be unwound. They affect the pull-off force Factors of straightening, constant bending over the bending roller 18, the Redirections and the - changeable - weight of the dancer. All these Factors cause the processing device 19 to receive a good that already has constant properties, which ultimately leads to the fact that with the Processing process a higher quality can be achieved. Through the Deflection by means of the deflection rollers 11 also becomes the feed to the bending roller 18 carried out uniformly, their coating - possibly also theirs Overall design - from a coefficient of friction increasing Material - e.g. B, a rubber or plastic - a turn around that Longitudinal axis of the goods hindered or prevented.

As mentioned above, any number of redirections, i.e. H. any number of deflection rollers can also be provided in pairs, where the number of the respective trigger lengths and the desired Memory function of the dancer is dependent.

The bending roller 18 can in addition to generating a constant Introductory curvature with which the respective good in a Processing device also runs in - with single or Multiple wrapping (s) through the goods - for straightening and / or Bending straightening serve, provided they have additional torque is transmitted.

The height-adjustable arrangement of the receptacle 8 and the holder 17th allows an adaptation to different inlet heights at any time downstream processing devices 19 or different sizes of coils 9, as well as an adjustment of the distance to the first deflection roller 11th

Claims (11)

1. Unwinding adjustment device for wire-shaped or multi wire-shaped material with a rotatable receiver (8) for a bobbin (9), a coil or similar and with a flexing roller (18) associated with a processing device (19), a dancer (13) with a plurality of guide rollers (11) being inserted between the receiver (8) and the flexing roller (18), and a constant unwinding and guiding direction is retained in such a way that the material is unwound and guided in the same bending plane of the winding bend, characterised in that the processing device (19) is an adjusting apparatus and that the spacing (A) of the receiver (8) for a bobbin (9) from the first guide roller (11), and from the guide roller (11) to each following guide roller (11) and from the last guide roller (11) to the flexing roller (18) and from the flexing roller (18) to the processing device (19) corresponds to the condition, such that A = or < π D wherein D is the respective diameter of the bobbin (9) or the guide roller(s) (11) connected upstream or the flexing roller (18), in such a way that the material is directed free of torque.
2. Unwinding adjustment device according to claim 1,
   characterised in that the diameter of each guide roller (11), for the defined resilient guidance of the wire-shaped or multi wire-shaped material is

   

   wherein d is the diameter, E is the modulus of elasticity and R_p0.2 is the technical elongation limit of the wire-shaped or multi wire-shaped material.
3. Unwinding adjustment device according to claim 1 or 2,
   characterised in that, to produce a constant bend in the wire-shaped or multi wire-shaped material in the bending plane of the diameter of the flexing roller (18)

   
4. Unwinding adjustment device according to any of claims 1 to 3, characterised in that an additional torque can be applied to the flexing roller (18).
5. Unwinding adjustment device according to claim 4,
   characterised in that the additional torque is a braking moment.
6. Unwinding adjustment device according to any one of claims 1 to 5, characterised in that a dead-centre adjustment device (20) is arranged between the flexing roller (18) and the processing device (19).
7. Unwinding adjustment device according to claim 6,
   characterised in that the dead-centre adjustment device (21) has two rollers (22, 23) of equal size and rotatably arranged symmetrically to one another on a rotatable supporting element (25).
8. Unwinding adjustment device according to any one of claims 1 to 7, characterised in that the dancer (13) is arranged so as to be moveable up and down in a guide.
9. Unwinding adjustment device according to any one of claims 1 to 8, characterised in that the flexing roller (18) is looped by the material by more than 180°.
10. Unwinding adjustment device according to any one of claims 1 to 9, characterised in that the flexing roller (18) and/or the receiver (8) are arranged to be height adjustable.
11. Unwinding adjustment device according to any one of claims 1 to 10, characterised in that the flexing roller (18) is coated with a material which increases the coefficient of friction.

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