WO2004108316A1

WO2004108316A1 - Improved coil transfer winding plant for rolled-stock

Info

Publication number: WO2004108316A1
Application number: PCT/IT2004/000322
Authority: WO
Inventors: Federico Castellani
Original assignee: S.I.M.A.C. S.P.A.
Priority date: 2003-06-09
Filing date: 2004-06-01
Publication date: 2004-12-16
Also published as: RU2353454C2; PL1635967T3; ITUD20030126A1; EP1635967B1; ES2370489T3; EP1635967A1; BRPI0411403B1; ATE520480T1; RU2005138299A; CN100434201C; CN1805804A; BRPI0411403A

Abstract

Winding plant for rolled-stock, with coil transfer (B) with column (5) with flag-type rotary arm (52) of the portal type (510-5101), provision being made for said flag-type rotary arm to be equipped with means for its lifting and lowering (520, 5200-5201) and at the end of the arm (521) includes engagement means for clamping by opposite clamps or jaws substantially crossed (522) capable of opening in order to grip one of said coils (B), to extract said coil from a winding reel (AV) of said winding-machines and place it after rotation outside in a respective further-working zone (B1-6).

Description

Description IMPROVED COIL TRANSFER WINDING PLANT FOR ROLLED-STOCK

This invention relates to a winding plant according to the pre-characterizing part of the main claim. Technical Field

This plant is particularly intended, if not exclusively, to be placed downstream of a wire or band or strip the rolling-mill plant, in which instead of fly-cutting the rolled-stock, the latter is wound in coils

Background Art In the prior art different systems are known for coil-winding the rolled-stock and also wire, for example originating from others plants, in a continuous way, citing as an example:

US-A-3,796,389 that discloses an apparatus for strip winding placed in a feeding line with a split-system for two winding-machines alternating between each other during winding.

A similar plant is disclosed in DE-A-4035193 where substantially a flying cutting shear and splitting-system to split is provided, without stopping the advancement of the wire on either of the two winding-machines so that while winding is carried out in one machine, it is possible to proceed to the extraction of the coil in the other. Another similar plant is explained in EPl 126933 in which- a handling device is associated to each winding-machine to withdraw axially the coil from the stopped winding-machine and transfer said coil to evacuating transfer means, while the other is winding.

Drawbacks of the Prior Art The known solutions have operating speed limits and moreover are structurally complex and expensive.

The winding process can involve stops due to tangling and the handling arrangements and coil storage are impractical and rather slow. The machines are bulky.

Both systems therefore present one or more of the aforementioned drawbacks and limitations.

In particular, the solution EPl 126933 is very complex and inefficient particularly with the limited speed of the reel opening and closing action that takes place with the system in the form of a flag-opening cap, with all the resultant drawbacks. The complexity of the latter solution derives furthermore from the pick-up and movement system of the formed coil by means of ground guide-rails, trolleys and the like. All these forms make the system very complex, cumbersome and difficult to access and maintain. In conclusion it is unreliable. The operating speed is further limited by the complex structure of systems for wire entry guide and for coil control after formation for pick-up.

Aim of the Present Invention

The aim of the present invention is to avoid the aforementioned drawbacks, improve the performance of the plant and improve the quality and/or reduce the treated material cost.

Summary of the Invention

The winding plant according to the present invention is concretized according to the characteristics of main claim. The characteristics of the sub-claims refer in particular to the advantageous solutions.

Advantages

The advantages obtained resolve the pre-established aim and in particular allow a high multi-functional performance to be achieved and moreover allow a qualitatively good product to be obtained at a reduced production cost. All this is obviously favoured by the vertical axis coil extraction system.

Brief Description of the Drawings

The characteristics of the invention and other related features will be better understood with the aid of the attached Figures enclosed as a non-limitative example, in which:

- Fig.1 represents a schematic side view of the winding plant applied to the end portion of a rolling-mill line during the winding phase or winding in a first winding-machine of two coordinated adjacent winding-machines supplied by a shunter with associated flying cutting shear,

- Fig. 1 A represents the phase of depositing the coil in the binding station.

- Fig.2 represents an overview of the plant in Fig.l in which it is possible to see the two adjacent winding-machines associated to a flag-transfer, namely with a column with a rotating overhanging arm to extract the coils from either of the winding-machines and discharge said coils in a posterior binding, transfer and stock stationFig.2A.

- Fig.3A and 3B represent, in an elevated side view, the mullion-transfer as in previous Figures, respectively without coil, lowered and with coil raised for the transfer by means of rotation.

- Fig.3C represents a plan view of a coil pick-up device with four jaws, placed at the end, under the portal arm of the mullion-transfer device.

- Fig.4, 4A represent respectively an elevated side and plan view of a winding-machine, from the feeding side of the wire to be wound (AB), with the pair of wire-guide jaws lowered around the wire winding reel to allow the automatic threading of the wire split by the upstream splitting flying shear (40-2,3), while the pair of rolls that maintain the coil compact at the end of winding are rotated upwards at a distance from the winding reel(4B-422),

- Fig.5 represents a view of the phase immediately following the wire threading and the start of winding (F), the opposite wire-guide jaws (4C-431 ) immediately being raised with a short disengagement movement from the previous wire-guide position, this movement is very fast since it is not integrated into the total disengagement mechanism that takes place in a following phase.

- Fig.6 and 6A represent a view of the same device as in the previous Figures but in which the opposite wire-guide jaws are completely shifted by means of rotation on a different articulation, sending-away from the winding reel (AV), while the two pairs of opposite rolls (422) have been rotated in approach against the wire coil that is formed in rotation (B)

- Fig. 7 Fig. 7 represents an enlarged view of the constructive details of the wire- winding reel for the formation of the coil (winding reel) in partial axial section to show the respective moving mechanism and cooling device. Said winder or winding-reel being in the winding position.

- Fig.7A, represents a view of the winding reel (AV) in the previous Figure, in which in partial axial section, the moving mechanism is still visible and the latter has been transformed from a closed reel to a conic reel (410) and the flanging of the reel (41 1 ) is rotated upwards, namely towards the axis and towards the exterior to allow the axial extraction of said coil (B).

Fig.7B, represents a plan view of the nippers or reel-mandrel sectors, of which there are four, that form the winding reel in a movable way, namely the winding reel mandrel, with a hatched view of the respective inner holes, these channels being for the circulation of cooling water and thus the dispersion of heat that the hot-rolled wire introduces into winding the coil, together with the external undulated special shape of said nippers, to reduce as much as possible contact with the wire and allow improved heat dispersion by means of aerating. - Fig.8 represents a front view of a nipper (410) of the reel, with a view of the respective internal to-and-fro serpentine channelling (4102) for cooling. Detailed Description of the Plant in Connection with the Figures

As disclosed in the previous Figures, the winding plant (see Fig.1 -1 A, 2-2A) includes a split system or splitting of the known type with a flying shear, schematized with (1 ) that deviates the wire on two lines, alternatively on one or the other (2) towards either of the two respectively adjacent winding-machines (4), with the aid of suitable wire- guide means of the known type (3) for coil-winding (B). While a coil forms in a winding-machine, in the adjacent winding-machine that is stopped, the pick-up of the completed coil is carried out with a transfer (5, ...,521 ). Coil Transfer (5. Fig.1. 1 A. 2. 2A. 3A. 3B. 3D

The coil transfer (5, ..., 521 ) Fig.1 A is of the portal type, namely with a column (51 ), with a flag-type arm (52) that is rotary (510), whose end (521 ) carries an openable clamping device with a pair of clamps or crossed opposite jaws (522) for the pick-up and axial extraction of the coil (B) from the winding-machine (AV) of the respective winding device (4, 4A), to transfer said coil (Fig. ) from the stopped winding-machine to a posterior binding or strapping station by means of two known art opposite binding machines or tie-machines (6) Fig.2A, the transfer of the coil to respective storage of tied coils (B1 ) then being provided.

The mullion-transfer is thus of the portal type and its rotating arm (52) can be raised and lowered by means of a dynamic-fluid piston (520) for the pick-up and deposition action, while rotation is guaranteed by a respective motor/ratiomotor (510) at the base of the column on a respective thrust block (5101 ). The lifting and lowering of the arm (52) is guaranteed by a box guide (520) with pairs of opposite guide rolls (5201 ) operating in a sliding way on the column with double-T section.

The pick-up of the coils is facilitated by the clamping device with four clamps that self- centre on the coil (B), opening and closing by means of respective fluid operated cylinders for opening and closing (5220).

In this way it is understood that the transfer movement is very fast and has open-air excursion, it does not encumber or impede the surrounding zones thus further allowing the greater compactness of the plant. Furthermore, this type of movement is manifestly very simple and very reliable with maintenance reduced to a minimum. Winding Groups (4.4A. 4B. 4C. Fiα.4. 4A. 5. 6. 6A)

The two winding groups are identical and adjacent with a wire-winding reel (F) with an openable reel (AV) with a vertical axis.

Each group includes, in addition to the central winding reel (AV-41 ), two opposite coil- compacting apparatuses (4B) in pairs of rolls (422) and two auto-introducing wire- guide jaws to automatically guide the wire at the beginning of winding (4C). In the centre is the reel (41 ) with openable winding reel (AV). Opposite Coil-Compactinα Apparatus (4B~> They include two respective articulated devices (42), placed on both sides of the winding reel (AV) with respect to the wire advancement line that fits sideways into the reel (AB).

The rolls are mounted on an articulated arm (421 ) hinged to the base structure (420) and operated in rotation from a distanced position (Fig.4) to a position against the coil (B) Fig.6. The movement occurs by means of the fluid-operated base-cylinder (4212) on the reacting arm (4210).

Said rolls (422, see Fig.βA) are mounted in pairs on a parallelogram (4222) with pairs of opposite arms mounted on the rolls' support (4220) and elastically moved under pressure by respective dynamic-fluid cylinder means (4221 ). In this way the movement is simple and reliable and the guaranteed, invariable orientation of the rolls for the adequate control of the end turns of the coil (B) in the winding reel (4V-41 ) avoids slackness prior to pick-up. Wire-Guide Group (4C The wire-guide group includes two semicircular opposite wire-entry guide jaws (431 ) hinged sideways, horizontally (430) and controlled by a fast-moving dynamic-fluid cylinder (431 1 ) at the end of the jaw movement arm (4310) hinged sideways at the base of the machine (4301 ) and rotated in, sending-away and approach by means of a reacting arm (43101 ) operated by a fluid-operated base-cylinder (43102). In this way it is understood that while with the opposite base-jacks (43102) the sending-away and approach of the wire-entry guide jaws (431 ) is carried out, their final movement, that is precise and fast to engage and disengage the wire, occurs with independent, short, precise and rapid control (431 1 ) that would otherwise prove impossible with this type of performance by the approaching and spacing-apart mover device with wide excursion (43102).

The above therefore allows very high speed and good performance to be achieved, without the danger of tangling or the need to reduce the advancing speed of the wire or the need to use speed adapting loops. The short engagement and disengagement movement is clearly visible in Fig.5

Winding Central Group - Winding Reel (4A. Fig.7. 7A. 7B. 8)

It comprises the central winding reel (41 ) with the closable and openable reel (AV),

Reel opening and closing action (AV):

The opening and closing of the reel (AV), necessary for extracting the coil (B) once it has been completed, takes place by means of four roatry petal flange sectors (41 1 ) with a reacting arm (41 1 1 ) moved by a sleeve (413) that moves axially by means of a dynamic-fluid cylinder (4131-4132) operated by a dynamic-fluid circuit (4133) with transmission to the reel base (41330) on a non-rotating coaxial axis with respect to the rotating reel (AV). The advantage of this solution is very important for the compactness and simplicity of the rotation guaranteed by the shaft end connection (4131 ) with respect to the sleeve (413).

Reel Mandrel External Shape Variation (AV)

The reel mandrel (AV) is composed of four sectors namely four nippers (410) hinged to the base (4121 ) of a rest-coil lower reel flange (412).

On the upper part, the movable sectors of the reel-mandrel (410) are articulated

(41 12) to said axially movable sleeve (413).

In this way, when the movable sleeve (413) is raised the upper flanging petals (41 1 ) are open, namely orthogonal to the reel axis and allow the formation of the coil (B) during winding, and the reel-mandrel sectors (410) are parallel and form a cylinder

(Fig.7).

When the coil is finished, in order to allow easy extraction, the movable internal sleeve

(41 3) is withdrawn downwards operating simultaneously: - the upper flanging petals of the reel that close upwards like a flower, .

- the core sectors that re-enter on the upper part (410, Fig.7A) determining a conical shape with the upper base size being smaller than the lower base.

In this way the extraction of the coil (B), by means of the jaws of the clamping device (522), is allowed and facilitated.

Cooling System

The semicircular reel mandrel sectors or nippers (410) are internally holed with channels (4102). The channels convey on a connecting duct (41020) with an interior duct double coaxial channel (41021 ,41022). In this way the cooling of the reel is guaranteed.

Furthermore, the external shape of said core nippers or sectors is undulated by means of alternate longitudinal counterbores (4101 ).

In this way contact of the reel mandrel surface (AV) with the coil (B) is reduced and a circulation of air through these longitudinal counterbores is facilitated. The reel (AV) rotates coaxially to the central axis by means of known art motorization with connection to a bevel-type drive (40, 401 -402).

Winding Cycle

The start of coil-winding occurs by means of said movable semicircular opposite jaw device (431 ) in association with the wire-introduction system (AB) for the first adherent turns to the side or base reel flange (AV) of the winding-machine.

This device receives the wire (F) from the dispenser (2-3) while it is closely fitted to the reel mandrel (AV) and after the priming of the first turns, the coil forming area must quickly be left free. To do this in the most efficient way, the fast movement of rapid displacement (short rotation 4310, Fig.5) is used. Subsequently, with other slower and wider rotation movements (4310-43102) the wire-guide jaws sending-away is carried out, leaving free the space to the approach of said control rolls' last coil turns (422).

In this way when the coil stops, the last turns are held closed until the intervention of the clamping device (522) of the transfer (5), whose four jaws are rotated to 45° to clamp the coil (B) between said rolls (422).

Subsequently the rolls (422) move away and the coil (B) still remains closed by the clamping device. At the same time the reel (AV) is also opened thus tightening and closing the upper flanging petals that are oriented upwards.

In this way the lock-out coil is also internally loosened and can easily be removed upwards with the lifting of the arm (52) of the mullion-transfer (5) and rotated rearward for deposition in the binding-machine with two opposite binding groups (6). At this point the cycle is repeated returning the priming wire-guide jaws to the position adjacent to the reel mandrel (AV) in order to receive a new wire (F) to be wound (Fig.4).

Claims

Claims 1. Winding plant for rolled-stock, of the type involving downstream of a rolling-mill plant:

- rolled flying cutting means (1 ) and two-way splitting (2); - coil-winding wire-entry guide means (3);

- at least two winding-machines (4) for the formation of coils (B) in which each winding-machine includes a reel (AV) involving an openable exterior flange to allow the extraction of the coil (B) once it has been completed, the above is associated to movable wire-entry guide means (43) for the start of winding for coil formation (B); - coil transfers means (5) capable of withdrawing said coil (B) from said reel (AV) to transfer said coil elsewhere; characterized in that: said coil transfers means (B) are made with a column (5) with a flag-type arm (52) of the rotary portal type (510-5101 ), provision being made for said flag-type rotary arm to be equipped with means for its lifting and lowering (520,5200-5201 ) and at the end of the arm (521 ) including engaging means for clamping by opposite clamps or jaws substantially crossed(522) capable of opening in order to grip one of said coils (B), extracting said coil from a winding reel (AV) of said winding-machines and placing it after rotation outside in a respective further working zone (B1 -6).

2. Winding plant for rolled-stock according to the previous claim characterized in that:

- said exterior flange of said reel (AV) is made up of flange sectors (41 1 ), hinged to said reel by means of leverism (41 1 1 ) in order to be rotated like flower petals:

- from an open-flower position, namely substantially radially orthogonal to the rotation axis of said reel (AV) to form substantially a closed reel for the winding of the rolled- stock to form said coil (B),

- to a closed-flower position, namely rotated outwards within a diameter lower than the interior diameter of said coil (B), to allow extraction.

3. Winding plant for rolled-stock, according to claim 2, characterized in that said movement of said flange sectors (41 1 ) occurs by means of an internal movement device (41 3) by internal linkage articulation (41 1 1 ) to said reel (AV) with axial channelling on central axis to the said reel (4133).

4. Winding plant for rolled-stock, according to the previous claim, characterised in that said internal movement of said flange sectors (41 1 ) is articulated rotationally (41 1 1- 413) to a shaft (4131 ) of a non-rotating axial dynamic-fluid cylinder (4132).

5. Winding plant for rolled-stock, according to any of the claims 2-4, characterized in that: - the madrel of said reel (AV) includes longitudinal sectors (410) hinged on one side to the base reel flange (4121 -41 2) and on the other, movable in approaching and sending-apart from the reel axis, from an external cylindrical form to an external conical form with the smaller lower base being smaller than the interior diameter of said coil, for the extraction of said coil (B), said articulated movement (41 12) having the same internal moving means (41 1 -413) as said flange sectors (41 1 ), so that:

- when the form of the madrel of said reel (AV-410) is cylindrical, said external flange sectors are in an open-flower shape in the form of a reel for coil-winding;

- when the form of the madrel of said reel (AV-410) is conical, said external flange sectors are in a closed-flower shape namely directed outwards with a diameter lower than the interior diameter of said coil (B) for its extraction.

6. Winding plant for rolled-stock, according to the previous claim, characterized in that:

- said longitudinal sectors (410) include channels (4102) for the circulation of cooling fluid.

7. Winding plant for rolled-stock, according to the previous claim, characterized in that: - said circulation of cooling fluid takes place by means of coaxial transmission

(41021 ,1022) on a non-rotating central axis with respect to the reel (AV).

8. Winding plant for rolled-stock, according to any of the three previous claims, characterised in that: - said longitudinal sectors (410) have an undulated external surface with longitudinal counterbores (4101 ).

9. Winding plant for rolled-stock, according to any of the previous claims, characterized in that: said movable wire-entry guide means (43) are mounted on two interdependent movements:

- a first for rotational arm excursion (4301 ,4310,4310143102) in approach to or complete sending-away from said reel (AV);

- a second for limited and fast excursion towards and away from the position of the wire-guide for the formation of the first coil turns adjacent to said reel (4311 ) by means of pivoting at the end of the arm of said first movement (43 0).

10. Winding plant for rolled-stock, according to any of the previous claims, characterized in that: it comprises two series of opposite movable rolls (422), by means of rotary arms (421-420) and a dynamic-fluid movement system (4212) for bringing said opposite movable rolls (422) from an upward rotated position in sending-away, to a position against the formed coil (B) in said reel (AV), said rolls (422) being mounted on an opposite parallelogram articulation (4222) on a roller-carrier (4220) with elasticaliy pressing means (4221 ) against said coil (B) when said wire-guide means (4C) are withdrawn to move out of said reel (AV).