ES2345941T3 - WINDER FOR BARS AND / OR LAMINATED OR METALLIC WIRES WITH SAFE HITCH. - Google Patents

Abstract

Coiler (2) for metallic rolled or drawn wires and/or rods of material to be wound in a coil (T), of the type comprising a winding mandrel (25-253) that is reel shaped with an external flange (254) that can be opened for the extraction of the coil and a base counter-flange (251) carrying in an overhanging way said mandrel (253), associated to guide means of the material to be wound (1) and pressing guide means (232-233) for inserting and holding at least a part of the first turn of the material to be wound (Tl) in a recess adhering to the mandrel (253) and adjacent to said base flange (251), characterized in that said recess is defined between said mandrel (253) and a toothed rim (252) that projects from said base flange (251).

Description

Winder for bars and / or rolled wires or extracted metal with secure hitch.

Technical field

The objective of the present invention is a winder for rods and / or rolled or extracted metal wire with secure hitch, according to the features of the claim principal.

The winding installation and / or the chain of production of the material containing said winder is also part of this invention.

Definition

The wires and / or rods are understood both in the strictest sense as in the sense of rods, to know material with profiles and / or sections and / or a large diameter with a variable shape and contour that have to be wound in coils using a lathe or rotating mandrel with flanges, being then said coils removed and transferred to a machine binder.

Said wire and / or rods and / or profile and / or section can be produced in a continuous or non-continuous way to different speeds in both rolling mills and extraction, but preferably, although not exclusively in continuous heat rolling facilities.

The definition of material or material to be winding is understood in this description as any type of elongated material as mentioned above.

Technique level

In the present state of the art they are known different types of wire winders, particularly those originated from facilities of continuous production of both rods or rolled wire or extracted.

In particular, high speeds of work in the field of rolling and therefore the wire or rod are sectioned in certain lengths that correspond to a coil and are then diverted for winding to a unit of winding machine or another, so that when a winding machine reels the wire to form a coil, the other unloads the coil already completed

One of the main problems of high speeds is the introduction of the wire into the winder (also known as mandrel winder or winder), that should occur while the wire advances without stopping the advance of said wire.

There are currently different systems for introduction and extraction of the end of the material to be wound to wind said material around the winding mandrel with a light tension so that a compact coil is produced and well formed, thanks to a slight tension of the material during the winding.

The introduction and clamping of the wire occurs through a guide channel capable of forming at least the first round of the coil or a series of first turns.

US3592399 (Jul 13-1971), FR2057722, GB1277515, DE2027516 (MORGAN), describe a machine wire winder where the winder has an intake channel and form the first round (see description and also in particular figures 3, 4, 5, 6, 7) using a semi-guide with a 180º circle arc that allows the wire or rod to be been introduced follow the shape of the mandrel to become strong and quickly around said mandrel.

US3945585 of March 23, 1976 (DEMAG) provides a channel for hooking and formation of the first laps of the coil around the mandrel by a bell type element that advances and retracts (10, 6, 11) precisely forming an entrance and wire holding channel during winding of the first laps

US-4664329 (Pali-Essex - May 12, 1987) provides a guide to wire and clamping system for coil formation using a band that reels the coil and pulls it simultaneously making the winding mandrel rotate, of this way the wire is continually forced to wind itself Same in a compact way.

DE821666 (Siemens - July 8, 1049) describes different systems for guide and clamping channels wire / rod, for coil formation around the lathe of the mandrel / winder. In particular, see the description and Figures 1, 2, 3, 4, 5, 6, 7 showing different solutions for the guide and the hitch or tightening of the end of the wire 3.

EP1126934 and EP1126935 (Danieli) also describe wire guide systems for the beginning of the formation of the coil similar to Morgan.

Italian patent applications UD2004A000006, UD2004A000007 (Danieli) to some extent it refer to the same solutions as the two previous solutions, where said wire / bar fixing channel is provided equally that the use of pliers that operate dynamically to hold the end of the material for the formation of the first turns.

In both the DEMAG solutions and in the DANIELI solutions, a dynamic clamping system is provided with a wire pincer function that is then loosened (removed in the DEMAG system) to allow the coil to be removed from the winding mandrel at the end of the winding.

In a known solution Danieli, the system of fastening of the first turns of the wire is executed as in US3945585 (DEMAG) but with the movement of the entire base flange that moves along the mandrel expanding the width of the channel wire socket to allow the imbibition of certain turns, in order to be later removed covering only part of the first round when the return winding that forms the Second layer is done. The solution is structurally very complex and also expensive in terms of movement mechanisms required for a large mass such as the base flange.

In other solutions, provision is made for the simple wire tracking so that more turns themselves Determine the restraint.

A repeated feature in the solutions Existing is the guide of the jack for the sliding of the wire which occurs as mentioned by the shape of the guide arch semicircular that due to friction forces the head of the wire in advance to bend and wind around the mandrel (WO2005 / 084843).

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Disadvantages of existing solutions

The guide system with an arched fixed channel without rotating elements, has the disadvantage of producing friction considerable and since the wire to be wound is still hot since it originates from hot rolling, it is especially very flexible and therefore could get tangled up and cause winding, forcing the winding system to stop and as a consequence the entire production chain.

On the other hand, the use of this guide channel, which in Morgan it has a semicircular shape of 180º and in Danieli it covers the 360º full turn of the mandrel by means of the two semicircles opposites, creates significant problems in terms of accumulation of the temperature since this guide prevents heat removal and wear since the material must slide against these guides

The downside lies in the fact that it also fails to ensure secure attachment or attachment of the material to be wound can lead to wire disconnection introduced and therefore can lead to the muddle and the need to interrupt production with the consequences Seriously derived from this.

In fact, it should be noted that the mandrel of The winder should rotate at a slightly more peripheral speed high than that of the material advance so that the latter is placed in light tension to favor the correct winding and compact.

However, this frequently causes disengagement of the material just introduced and therefore the blockage of the production. US3527077A (... NARGANG) also refers to the winding rod on which "to help hold the end main inserted from rod R in slot 136, can be stretch marks provided on support 118 and the inner periphery of the radial end face of the wall 126, as described in Fig. 3A): "This solution suggests the use of a guiding element of "U-grooved" slip (242) as follows of a free-rotating bar clamping roller (210 - Fig. 3 particular: 3A-3A Fig. 3 in relation to Fig. 3A). US3472461A (..FREDRIKSSON) exposes a "Method and apparatus for affirm one end of the continuous feed material "in which in a "support slot 12" of a "winding head 10" the "guide end 13 of the material being wound" is held by the "roller (14) in the shape of the sector".

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Objective of this invention

The main objective of this invention is provide a much more efficient and adequate system to guide and automatically hook the material to be wound without systems dynamic clamp and limit damage to the wire to a minimum when inserted.

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Solution to the problem and summary of the invention

The problem is solved with the features of the main claim.

The secondary claims represent Preferred embodiments of the invention.

Advantages

In this way, using a pressure counterguide With rollers, friction is significantly reduced so makes rapid heat removal possible and it is possible to compress much more effectively the end of the wire to be introduced in the retention system of the first round or part of it, thus avoiding wear and damage to the wire itself.

In addition, thanks to the use of the toothed tire placed at the base of the winding mandrel flange, slightly distanced from the mandrel itself according to the diameter of the section of the material to be wound, acting in cooperation with the contraguía with opposite rollers in the form of jaw that pushes the material taken between the teeth, and the mandrel that holds said material as the precise action of a jaw, it is possible to obtain a perfect, safe and immediate attachment of the material without any danger of loosening and thus perfect training is guaranteed and fast coil without obstacles.

In fact, the grip jaw is substantially formed:

- by the lower toothed tire that rotates with the mandrel, with preferred contraposition of helical ribs in the side of the mandrel,

- by the semi-crown of upper rollers that they are static, that is, they do not rotate with respect to the mandrel, but rotate freely vacuum and therefore operate in the same way as upper jaw teeth but they are fixed and rotate and so both these force the material that advances to be forcedly inserted between the lower toothed rim and the outer surface of the mandrel

The concept of the hitch system with a clamp with clamping teeth and the first turn formation, It is therefore particularly effective precisely for use from:

- teeth and not teeth in a canal as in the previous solutions, but on one side (bottom) and

- vacuum pressure rollers on the other (side superior opposite);

- presence of helical ribs or opposite denture said teeth forming said tire around the surface of the mandrel.

The invention also provides the use of interchangeable teeth that allow the winder to be adapted easily to different types of wire or rods or sections and also different profiles, since otherwise also it would be necessary to change the winding machine, since it channel would not be suitable for adaptation to any form or profile of material to be wound.

Considering as an example, flat sections rolled or profiled sections or even homogeneous rods or fluted with varying diameters, etc., the great variety of material to be wound that originates, for example, from a rolling plant or different separate rolling lines It immediately becomes apparent.

It is therefore highly useful to have a winder capable of carrying out the winding in different ways of material, this being also associated with the intermediation of transfer means, generally to a binder machine of downward flow to bind the coil when it is completed

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Description of a preferred embodiment

The invention will now be better understood with the help of the attached Figures including an embodiment particularly preferred, but not limited.

The figures represent:

Fig. 1 a schematic elevation side view from the top of a winding unit comprising the winder with a winding mandrel according to the present invention. In this position the winding mandrel has the upper outer flange in sectors (254) in a lowered position, that is horizontal (as petals of an open flower) that is, in the winding position to form the material coil.

Fig. 2 represents a schematic view from above the winding unit in figure 1.

Fig. 3 represents the enlarged view (in section axial vertical passing through the axis of the winding mandrel) of system of attachment and fastening of the end of the material and formation of the following turns.

Fig. 4 represents the enlarged view as in the Fig. 3 from above the winding mandrel with its respective rim of teeth for holding the material according to the invention.

Fig. 5 represents the same view of figure 4 in association with Fig. 6 which represents in an enlarged view the shape and arrangement of the teeth and represents as the wire or rod or rod (material to be wound) is tightly adjusted between the teeth and the mandrel body, in this specific case the material to be wound (T1) takes the form of a ribbed bar, the material predominantly used in concrete structures reinforced in construction.

In this case, it is clear to see that the ribs of the bar (T1) are easily inserted between the teeth (252) blocking the bar in a completely safe way, without However, this is also the case without such ribs. Fig. 6 represents a schematic view of the grip ribs helical (2531) on the surface of the mandrel opposite the teeth (252), which decisively improve the grip and prevent the wire escape due to internal traction of the slits helical Figure 7 represents in a more enlarged view, the left part of figure 3 to show in greater detail the roller pressure system (234, 2341) that progressively pushes and holds the bar between said clamping teeth (252) and the mandrel (253). Similarly, Figure 8 represents the side increased right of figure 3 to, show not only the shape (2520) recessed arched tooth (252) towards the mandrel, but also its trapezoidal inclined outward shape (2521) to be narrowed and prevent its height from exceeding the diameter of the bar (T1) to avoid obstructing the formation of turns getting between one lap and another, that is between the first row and the third row of the turns of the coils.

In this way it is understood that the coil can easily be extracted axially when completed and the space minimum left by teeth teeth (252) do not influence substantially in its shape, dimension or weight.

Detailed description of the figures

From the Figures it is observed that the winding unit includes a winder (2) associated with the means of motorization (m; M1) for the rotation of its mandrel (25) and a half of semicircular pressure in the form of an open jaw (233) with pressure rollers (234, 2341) on one arm (232) that is hinged (230) and activated by a return lever (231) with a piston (23) articulated in the base (20) of the winder (2).

In this way you understand, as visible from the thin line, that the jaw with rollers (232, 233), open towards the outside, can be raised and lowered to compress on a flange of lower base (252) of the winding mandrel (253), which according to the invention presents the tooth rim for material retention (252) and so against these teeth.

The entry of the wire is favored by a funnel-shaped entrance on the entrance side (235) of the jaw (233) immediately presenting a first roller of pressure (234) which is more effective than other solutions of the entry.

The pressure jaw joint (232, ..., 32) is such that it is possible to transfer it from a position of coupling of its rollers (234, 2340, 2341) against the rim serrated (252), to a substantially distanced, external position to the material winding area, (to allow the approximation of another series of opposite rollers (not illustrated) suitable for keep winding the last turns when the wire does not it is kept in tension by the conduction means, once the coil is completed, and this allows a grip and removal of the coil without loosening the turns themselves).

The winding mandrel (253) rotates to a variable speed using the motor system (m; M1), placed down next to the jaw with rollers (233, 234). This way the winding system is released from any obstruction so approach allowing other orthogonal counter rollers opposite after coupling for maintenance of unwind in the final winding phases.

The rotation speed is calculated so that there is always the same peripheral speed corresponding to that of the linear advance of the wire, the assembly by an electronic control unit distanced from the safety system so as not to be influenced by the temperatures that They develop in the winding or winding region.

The mandrel consists of retractable sectors that in cooperation with the lower and inner movement (255, 256) it removed when the coil has been completed, being arranged conically to facilitate ascending coil extraction final and previously released wire head held.

Transverse slits (2510) are provided in the base flange (251) to allow the coil to be taken with opposite grip pliers for coil extraction by elevation, said flange being integrated into the mandrel structure same (2530) and therefore with a simplified structure without mechanisms of complex movement.

In detail the mandrel (2530) is formed, such and as mentioned (although not shown) by four sectors hinged at the base of the flange (251), which fit for the extraction and are also associated with a mechanism (not shown of rotation of the four corresponding upper sectors of the upper flange (254) than by the shaft (255), and the devices of movement below (257), of the unit (256) are raised as the petals of a flower and therefore allow extraction ascending coil (closed petals)).

In front of the winder (2) there is a car wire guide (1) comprising a horizontal guide (121) of the base (10) orthogonal to the middle line of route advance of the material (X-X) on which a cover is installed sliding (11) with a drilling column (111).

The sliding cover (11) therefore moves alternatively according to order (not shown) to move the column drilling machine (11, 111) along the axis (Y-Y) for keep it always in progress, namely in tangent to the diameter of winding of the mandrel coil (253), which obviously increases progressively with increasing coil diameter in winding.

The drilling column (11-111) moves vertically in an oscillating motion (therefore alternatively) a sliding door (110) that is thus augmented and down along the orthogonal axis (Z-Z) to form progressively turning the coil back and forth in winding.

For this purpose, the cover plate sliding that moves vertically (110), through the column hole punch (111) for left or right rotation by means of a known electric motor (for example, taking a controlled step) and by a suitable electronic control unit that controls all winding device movements, supports hinged the end of a support or oscillating pilot bar (1131) that carries the material to be wound such as wire or rod or rod from the laminator with a suitable cutting system (not shown).

Said guide is hinged (1130) to said plate (110) to allow reciprocal inclination for the formation of the turns in the winder (25).

The pilot bar support (11341) comprises the material guide channel (113) having an extension of wire guide entry (1130).

Immediately below this guide channel (1130-113) there is a wire guide extension oscillating (112) that oscillates in a spine (1120) to have the winding material always according to the angle of inclination, towards once up (with the guide wire extension in one movement down) and down once (with the guide extension of the wire in an upward motion) so that the inclination always correspond to the angle of winding inclination of the wire wound in a coil that is never orthogonal. The end of this oscillating wire-guide extension (112) can be interchangeably advantageously to adapt to the shape of the type of material to be wound.

The feed material thus leaves the wire guide extension (112) and is inserted into the entrance (235) of the jaw with guide rollers (233-234) where the material (T1) is progressively pressed by rollers (234, 2341) between the toothed rim (252) and the outer surface of the mandrel (253) holding the material (T1) in a forced manner.

In this way the material (T1) is blocked inside the toothed rim (252) and assists in tensioning the wire for a winding fitted around the mandrel (25).

It will be noted that the first roller advantageously Introduction is slightly hollowed out (234-2340) in such a way that to help the input of the material (T1), then the successive rollers are cylindrical (2341) to compress the material (T1) definitely between the toothed rim (252) and the external surface of the mandrel (253) until it hits the bottom of the base flange (251).

Of course, it would also be possible to provide at the end convex or ribbed rollers to improve the thrust of the wire or rod between the teeth in the final phase of exit (final jaw).

The arched hollowed internal shape of the Teeth (2520) helps to hook the material and hinders the leakage of the material favoring accommodation.

The external trapezoidal shape of the teeth (2520.252) allows improved accommodation of the following turns of the coil without preventing its stacked formation.

It should be noted that the pressure rollers in vacuum are mounted (233) on bearings (2331-2332) which in an overhanging shape carry the shaft (2342) of the rollers 234 that for this purpose have an extended inclined flange (2342) that fits with the inclined trapezoidal surface (2521) of the teeth (252).

This enhanced support helps penetration precisely controlled of the material by being wound. He projection roller towards the mandrel, on the other hand, allows its maximum approach to the mandrel with an improved wire guide.

Naturally, all teeth (252), as mentioned before, they are interchangeable with other suitable forms to adapt to the different shapes and dimensions of the material For being wound. The number of pressure rollers (234) can obviously vary more.

To improve retention it is also possible provide outstanding helical ribs for material grip, placed on the outer surface (2531) corresponding to the mandrel (253) opposite the teeth (252).

Once the coil is finished the mandrel will removed in its diameter taking a conical shape and consequently the fastened bar of the first winding turn is released and so both assists the upward extraction of the coil.

Advantageously, the internal surface of said Teeth (252) is grooved and / or serrated and / or granulated. In this way an improved grip as guaranteed on the opposite surface (2520) It is guaranteed.

The interchangeability of these teeth is guarantees by a fixing system passing through said flange base (251). In this way, teeth can be easily exchanged when they wear out or even to replace them with other different types of teeth to adapt them to different materials to be wound.

To avoid hazards and for safety reasons, The entire winder is housed in a box made of sheet metal and suitable camcorders control its operation from TV remote control space and is associated with medium computerized for total operation control.

Advantageously, the winder has a shaft vertical (2) and is housed in an armored box made of metal in closed sheet with a security access gate that cannot be open during operation and comprising an opening superior in order to be able to lower the withdrawal means of the coil from above to be able to perform the extraction from above, and sensors and control means and a camcorder is provided in said box for the control and supervision of the regular work progression through a controlled cabin remote.

More advantageously a rolling plant It has these winders, comprising at least two lines of winding down, with a continuous cutting and deflection system towards one or the other, with a vertical axis (2) parallel to identical winders between which an extractor is interposed vertical transfer with a column with a rotating arm for alternatively extract the completed coil from above of the winder while the other forms a coil, and so Rotary transfers it down directly to a machine coil binder.

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References cited in the description This list of references cited by the applicant has been collected exclusively for reader information and not It is part of the European patent document. It has been made with the greatest diligence; the EPO however does not assume responsibility for possible errors or omissions. Patent documents cited in the description

US 3592399 A, 1971 [0011]

FR 2057722 [0011]

GB 1277515 A [0011]

DE 2027516 [0011]

US 3945585 A, 1976 [0012] [0018]

US 4664329 A, 1987 [0013]

DE 821666 [0014]

EP 1126934 A [0015]

EP 1126935 A, Danieli [0015]

IT UD2004A000006 A [0016]

IT UD2004A000007 A, Danieli [0016]

WO 2005084843 A [0020]

US 3527077 A [0025]

US 3472461 A [0025]

Claims (18)

1. Winder (2) for rods and / or rolled or extracted metal wires which is the material to be wound in a coil (T), of the type comprising a winding mandrel (25-253) in the form of a lathe with a external flange (254) that can be opened for the extraction of the coil and a base counter flange (251) that leads in a manner that projects said mandrel (253), associated with means for guiding the material to be wound (1) and pressure guide means (232-233) for insertion and retention of at least a part of the first turn of the material to be wound (T1) in a recess that adheres to the mandrel (253) and adjacent to said flange of the base (251) characterized by the fact that said recess is defined between said mandrel (253 2531) and a tooth rim (252) projecting from said base flange (251) and by which said guide means of the pressure (232 233) presents a series of pressure rollers (234, 2341) that can be moved from d and a pressure position on said teeth (252) to compress the material to be wound (T1) between said teeth (252) and said mandrel (253), at a position substantially distanced from them. 2. Winder (2) according to the preceding claim, characterized in that said roller guide means (234-2341) are: (i) rotate on empty gear (ii) mounted on a circular support (233) with an arm (232) hinged on the shaft (230) placed down on the side opposite the wire guide system (1) and on which the hinge shaft (230) is substantially orthogonal to the line of forward and in orthogonal projection to the mandrel axis, so that that said circular guide means with pressure rollers (233, 234, 2341): - in the resting position they are lifted and withdrawals substantially distanced down from the material distribution line, and - in the active position, they advance by tilting in said tooth rim (252) with a radial axis with respect to the axis of the mandrel. 3. Winding machine (2) according to the preceding claim, characterized in that on the inner surface opposite said tooth rim (252), substantially on the mandrel side (253), ribs or gripping teeth are provided (2531 ). 4. Winding machine (2) according to the preceding claim, characterized in that said ribs or gripping teeth (2531) have a substantially helical course or in any case inclined to move progressively towards the lower flange with respect to the direction of rotation , to force the inserted material to be wound (T1), pushed by said rolls (234, 23341) to move by sliding, due to the traction of the mandrel, even more so in said recess within said tooth rim ( 252). 5. Winder (2) according to any one of the preceding claims, characterized in that at least the first roller of the inlet (34) of said jaw (233) has a recessed shape to resend (2340) the material to be inserted (T1) and is placed substantially adjacent to a wire introduction zone (235). 6. Winding machine (2) according to any of the preceding claims, characterized in that at least some of said pressure rollers (34) have a cylindrical shape (2341). 7. Winder (2) according to any of the preceding claims, characterized in that said teeth (252) are interchangeable. Winding machine (2) according to any of the preceding claims, characterized in that said teeth (252) have an inwardly directed recess (2520), that is to say on the mandrel side (253). 9. Winding machine (2) according to any of the preceding claims, characterized in that said teeth (252) have a bevelled back with truncated cone outward (2521), that is, on the side opposite the mandrel (253) . 10. Winder (2) according to any of the preceding claims, characterized in that said teeth (252) have a projection that does not exceed the diameter of the material to be wound (T1). 11. Winder (2) according to any of the preceding claims, characterized in that said teeth (252) are placed in said base flange (251) with an axis substantially corresponding to the position of the second row of turns of the winding coil (T T1), so that they are introduced between the first row of the turns and the third row of the turns of the coil. 12. Winding machine (2) according to any of the preceding claims, characterized in that the internal surface (2520) of said teeth (252) is grooved and / or serrated and / or granulated. 13. Winder (2) according to any of the preceding claims, characterized in that said rollers have a reduced flange (2342) suitable for the support during rolling against said external inclined backing surface (2521) of said teeth. 14. Winding machine (2) according to any of the preceding claims, characterized in that said pressure rollers (234, 2341) are mounted on a cantilever (2343) and in an operative position is projected inwards, that is, towards the axis of the mandrel (253). 15. Winding machine with vertical axis (2) according to any of the preceding claims, characterized in that it is housed in an armored box made of closed sheet metal with a safety access gate that cannot be opened during operation and comprising a top opening with the aim of being able to lower the retraction means of the reel for extraction from above, with control means and sensors and a camcorder associated to said box for the control and supervision of the regular execution of the I work through a remote control booth. 16. Rod coil forming plant or wire associated with the transfer of coils and joining means of coils comprising at least one winder according to any of the preceding claims 1 to 9. 17. Laminating plant comprising at least one winder (2) according to any of the claims precedents 18. Laminating plant according to claim above, which comprises at least two flow winding lines descending, with a continuous cutting system and deviation towards one or the other, parallel to winders with vertical axis (2) according to any of the preceding claims among which is interposed a vertical transfer extractor with a column with a rotating arm for removal alternately from above the coil completed from a winder while the other forms a coil and rotationally transfers it to down directly to a coil binding machine.