WO2005099924A1

WO2005099924A1 - Universal winding machine for rolled or drawn wire

Info

Publication number: WO2005099924A1
Application number: PCT/IT2005/000188
Authority: WO
Inventors: Federico Castellani
Original assignee: SIMAC SpA
Current assignee: SIMAC SpA
Priority date: 2004-04-14
Filing date: 2005-04-06
Publication date: 2005-10-27
Anticipated expiration: 2006-10-14
Also published as: ITUD20040077A1

Abstract

Winding machine with wire-guide extension (7), hinged upstream and downstream of a slide (5) that vertically moves parallel and vertically to the reel axis (1) equipped with means (5) for the alternate assembly of the wire-guide extension (7), carried out in a modified way (71, 72) according to the type or wire/rod to be wound.

Description

DESCRIPTION UNIVERSAL WINDING MACHINE FOR ROLLED OR DRAWN WIRE

Technical Field

This invention refers to a universal winding machine for rolled or drawn wire according to the characteristics of the preamble of the main claim. Prior Art

Many winding machines for rolled or drawn wire are known. GB2058703 of 4/1981 is cited as an example of an automatic winder. More pertinent is DE0821666 of 11/1951 that describes a winding system for wire alternatively in two winding reels (11 ,12, Fig.8) that includes a device to form wire coils downstream of a wire working installation provided with a wire- guide (13/14) with wire-guide movement means (15-13) to guide the wire to the respective winder (11,12) with wire miving means (17) to move the ends of the wire-guide to the coil (13) on one side and on the other side over the respective reel (11-12) substantially parallel to the reel axis. Even more pertinent to the object of the present invention is US4664329 (May 12,1987 in the name Essex Group Fort Wayne Indiana US). This refers to a winding system of a segment of wire to form a wire coil that includes the stages of rotating a mandrel by means of the contact of the external surface of the mandrel with a belt in motion and directing the wire over the rotating mandrel between the belt and the external surface of the mandrel. The belt holds the wire against the mandrel (reel) and when the mandrel rotates the wire is wound in a coil on the external surface of the mandrel. The belt maintains contact with the external surface of the coil in order to rotate the mandrel until the full length of the segment of wire is wound. When the thickness of the coil increases, the belt is partially loosened from the external surface of the coil to adjust the belt tension. In the entire description and figures this patent also provides (Fig.1) a device to form a wire coil in the winding machine (26, 27) with a winding reel (508) situated downstream of a wire working installation provided with wire advancement rollers (13) and thereafter:

- a first wire-guide (24/25) with first wire-guide movement means (510/511) to guide the wire from said advancement rollers (13) to said winding machine

(26,27) and first moving means (504) to move the end of the guide element to the coil (510/511) on one side and on the other over said reel (544) substantially parallel to the reel axis (579-508-588-589, see Fig.5a and Fig.5i) and seconds moving means (567, 577-579,588-585-581-588-589-591 see also Fig.δi) in order to be able to move said end of said first wire-guide element (24) in clearance perpendicularly to the reel axis in order to follow the increase of the diameter of the coil during the winding (544-27), said first wire- guide being orientabie and guided alternatively on one winding machine (26) or on another (27) in such a way that while one machine has the complete coil and the machine is fully stopped for the extraction of the coil, the other is working, capable of winding a new coil (506) without interrupting the production cycle which in this way can take place continuously, by means of an orientabie guide sliding support on its end (567 Fig.δi) and

- a wire-guide extension (510 from 24 / 511 from 25) separated from the first (24.25), capable of guiding at least one section of said wire immediately before winding over said reel perpendicularly to the reel axis, by means of sliding support means parallel to the reel axis (571) with a guide channel (509) orthogonal to the reel axis (Fig.δh). US3592399, FR2057722, GB1277515, DE2027516 substantially refer to a winding machine as in the previous solutions with a reel flange that is openable, rotatable and flag-shaped to extract the coil and with a wire-guide (58b -P1) perpendicular to the reel axis. WO002δ9δ2 (EP1126935 - Danieli) that refer to the same previous solution (preamble - non-characterizing part of the main claim) have substantially the same structuring described above with the difference that said wire-guide (510-511, 503-500) extension has devices to always be held constantly perpendicular to the rotation axis of said reel. Drawbacks of the Background Art

The solution DE821666 only uses one wire-guide that is orientabie for reciprocal winding on the reel that, in particular, may include drawbacks with respect to the uniformity of wire-turn formation. The solution US4664329 presents a variable alignment angle of a wire in winding according to the inclination of the first wire-guide and its wire-guide extension perpendicular to the reel axis, which can lead to winding drawbacks such as the superimposing of the wire turn (on one side = end of the winding run) or clearance from the adjacent wire (on the other = start of the return), this in particular takes place depending on the width of the reel, on its diameter and on the length of the first wire-guide.

The solution WO0025952 (EP1126935) proposes the same solution as the previous one, with a position perpendicular to the reel axis of the wire-guide extension, placing it perpendicular and oriented in a fixed way to the reel axis. This solution can work to a limited degree with wires that have a small diameter with respect to the coil diameter or reel diameter, while for wires that have a larger diameter and particularly in the unfavourable ratio between wire diameter and reel/coil diameter, turn superimposition with malformation of the coil is noted. In fact, with the perpendicularity of the wire-guide, friction is also noted between the wound wire of the last turn and the wire in winding that precisely for its perpendicularity also tends to overlap the wound wire. For this reason, in unfavourable or particularly critical conditions, instead of sliding on the underlying winder layer, the wire is superimposed thus destroying the uniformity of the coil. Another important drawback is the fact that turns that are almost perpendicular to the reel axis lead to the formation of a coil that, when released from the movable external flange of the reel to raise the coil and bring it to a binding-machine, has lateral turns that can loosen and unwind from the coil thus impeding both its transportation as well as its subsequent binding. A further inconvenience of these solutions derives from the fact that the winding installations placed downstream of a rolling-mill plant must process products with a form different to that of the laminate with respect to both size and section. In these cases, if for example 6mm wire must be produced, the same performance cannot be achieved to produce a 25 mm rod. In fact, the characteristics of the two products to be wound involve completely different demands for accurate winding. Aim of this Invention

The aim of this invention is to avoid the aforementioned drawbacks allowing the formation of perfectly adjacent turns in the coil without the danger of superimposing or distancing one turn from another. An additional aim is also to be able to form a coil also correctly wound independently of the characteristics of the material and particularly of the type, section, dimension and form of the wire or bar to be wound. Solution to the Problem and Disclosure of the Invention The problem is solved with the characteristics of main claim. The sub-claims provide particularly advantageous solutions. Advantages

In this way, the important advantage is obtained of forming a wire coil with perfectly adjacent aligned turns that are not superimposed, independent of the wire characteristics. Description of a Preferred Embodiment

The invention will now be better described with the aid of the enclosed Figures showing a preferred embodiment, wherein:

Fig. 1 and Fig. 1a schematically represent a side view from above of the wire- guide structure in the winding machine, with the only main wire-guide mounted on the respective sliding support (only the end part of the main wire-guide is visible) where the respective support plate is visualized in its structure to receive, in an interchangeable way, one wire-guide extension or the other. Fig.2, 2A, schematically represent a side view from above of the solution in Figure 1.1 A applied with a wire-guide extension that is orientabie according to the turn angle, also interchangeable according to the type and section of the wire.

Fig.2B and 2C represent two different forms of sections of the wire-guide channel for two different interchangeable types of wire-guide extension. Fig.3,3A, schematically represent a side view from above of the solution in Figure 1.1 A applied with a wire-guide extension with an end with opposite rollers also interchangeable according to the type and section of the wire. Fig.3C represents a cross-section at the exit of the wire (F) between said wire- guide roller ends. Detailed Description of the Figures

The figures represents the winding zone of a wire or bar (F) originating from a rolling-mill plant or from a drawing plant (not shown in the known art) where there is a first main wire-guide generally indicated with (4) which is hinged downstream in an articulated way (51) to allow the reciprocal orientation of its end parallel to the axis of the reel (1) and orthogonally to the latter to follow the increase of the diameter of the coil that is being formed. This movement is provided by a double slide device (6) with movement parallel to the reel axis and also orthogonally to it (1), by means of a support plate (5) that provides, according to the present invention, connection means for the interchangeability (52,δ3) of a wire-guide extension (7, 71/72). In this way the winding machine is advantageously and quickly able to adapt the to the specific needs of the type of wire and of the type of coil one wishes to obtain. Advantageously, an intermediate extension joint (8) which is particularly advantageous is provided, not only to facilitate the continuity of the entry and guiding of the wire (F) but also to intervene in a detachable way, in case of the need for rapid maintenance or obstacles or in order to solve tangling problems. As claimed the wire-guide extension is of a different type and shape. Both extensions of the wire-guide (7) are hinged with a handle (70) on a corresponding pin (52) provided on said stirrup (5) and forming part of said connection means for interchangeability. A first wire-guide extension (71) is orientabie by means of an inversion jack (72) to incline the wire-guide extension (71) alternatively according to the inclination of the reciprocal winding turn (right/left). In this case, the wire-guide extension is conveniently made up with two half boxes (S1, S2) of which the external half box (S2) is detachable (B1.B2) for maintenance or locking in case of obstacles or tangling, etc. Moreover, provision is made for the same wire-guide extension (71) to be completely interchangeable with others having half boxes (S1.S2) with channels of a different shape and section and/or dimensions (A) to adapt rapidly to any type of wire as more clearly shown in Fig. (2B.2C), respectively the first for winding bars with a large diameter and the second for winding wire with a small diameter . Furthermore, it is to be noted that the section of the channel (A) is substantially rectangular and the narrow side is slightly greater than the diameter of the wire to guide it while the larger side is in the direction of the surface of the reel axis and is much larger than the diameter of the wire (F) to allow to the wire itself (F) to orientate itself freely and adapt itself to the formation of the turn. A second wire-guide extension (72) is alterable with the first, in which its end comprises a pair of recessed rollers of the guide pulley type (7241,7231), opposed and situated on the surface coplanar to the reel axis (1), both rollers also being interchangeable in the form of a recess, and in which one roller is on a extension stirrup that is fixed (724) but adjustable in the alignment position 7242) and one is on the clamped movable extension stirrup (723) hinged upstream (723) to work as a jaw grip elastically pushed by a spring (72δ) in an adjustable way (726) in the form of clamping and elastic yielding in the guiding of the wire (F). In this way it is possible to perform all the functions required by the different characteristics of the type of wire or bar or plate to be wound in a completely universal way thanks to said interchangeability.

Claims

1 Winding machine for a rolled or drawn metallic wire/bar (F) with a device to form a wire coil (R) in a winding machine with one or more winding reels (1) placed downstream of a wire working installation, provided with wire driving means and downstream of this:

- a first wire-guide (4) with first wire-guide moving means (6) to guide the wire from said advancement means (2-3) to the winding reel (1) of said winding machine with moving means (6-5) to move the ends (40) of said first wire- guide (4): i. in a parallel direction to the reel axis (1) in a reciprocal movement to form the adjacent winding turns on one side and ii. in an orthogonal direction to the axis of said reel (1) to follow the increase in diameter of the coil that is forming and,

- at least one wire-guide extension (7) separated from the first wire-guide (4), capable of guiding at least one section of said wire (F) immediately before the winding over the mandrel of said reel (1), characterized in that said wire-guide moving means (6) include a support plate (δ) orientably hinged (δ1) with support means for interchangeability (δ2,δ3), alternatively more than one of said wire-guide extensions (71, 72).

2. Winding machine according to claim 1 , characterized in that said support means for interchangeability (δ2,δ3) of the wire-guide (71 ,72) include at least one first hinging means (δ2) for said extension wire-guide (7) with hinging of said wire-guide extension (7) substantially upstream of it (70).

3. Winding machine according to claim 2, characterized in that said support means for interchangeability (δ2,δ3) of the wire-guide (71 ,72) include at least second hinging means (53) associated to the inclination means (72), connected at the end (73) of said wire-guide extension (71) to establish an independent inclination of said wire-guide extension (71) with respect to said first wire-guide (4) and said reel axis (1).

4. Winding machine according to any of the previous claims characterized in that said wire-guide extension (71) comprises a boxed channel with a rectangular section (A) made up of two half boxes (S1.S2) of which the external half box is extractable, openable and detachable (B1.B2) for external access to said wire-guide channel (A).

5. Winding machine according to any of the previous claims, characterized in that said wire-guide extension (7) comprises a rectangular wire-guide channel (A) with a base section orthogonal to the axis of the mandrel of the reel (1), substantially a little higher than the diameter of the wire and with a height parallel to the axis of the mandrel of the reel (1), substantially greater than the base to allow the free oscillation of the wire/bar parallel to the axis of the mandrel of said reel (1).

6. Winding machine according to any of the previous claims, characterized in that said wire-guide extension (7) comprises a wire-guide channel (A) with variable form and/or dimensions of a wire-guide extension with respect to another that is interchangeable.

7. Winding machine according to any of the previous claims, characterized in that said wire-guide extension (7) comprises, at its end (72), a pair of opposite rollers of which at least one is elastically yielding (725) and both are interchangeable (7241,7231).

8. Winding machine according to any of the previous claims, characterized in that said rollers are recessed and are of the rope-pulley type (7241,7231).

9. Winding machine according to claim 7, characterized in that said wire guide rollers (7241 ,7231) are interchangeable with others having different forms and dimensions for the recess.

10. Winding machine according to any of the previous claims, characterized in that it includes at least two categories of interchangeable wire-guide extensions (71,72) of which at least one (72) includes opposite wire-guide rollers (7241 ,7231), according to any of claims 6-8.

11. Winding machine according to any of the previous claims, characterized in that said first wire-guide (4) and/or said support means for interchangeability (δ) include at least one additional support means for an intermediate wire- guide element (8) between said first wire-guide (4) and said wire-guide extension (7).

12. Winding machine according to any of the previous claims 6-10, characterized in that said end wire-guides (7241 ,7231), include:

- a roller on a extension stirrup that is fixed (724) but adjustable in the alignment position 7242 and

- a roller on the clamped movable extension stirrup (723) that is hinged upstream (723) to work as a jaw grip elastically pushed by a spring (72δ) in an adjustable way (726) for the form of clamping and yielding.

13. Rolling-mill plant for the production of wire or bars in coils, equipped with a winding machine according to any of the previous claims.