WO2006013604A1

WO2006013604A1 - Metallic wire coil winding installation on an improved winding mandrel

Info

Publication number: WO2006013604A1
Application number: PCT/IT2005/000440
Authority: WO
Inventors: Federico Castellani
Original assignee: S.I.M.A.C. S.P.A.
Priority date: 2004-08-06
Filing date: 2005-07-25
Publication date: 2006-02-09
Also published as: ES2366794T3; RU2350422C2; CN100506417C; UA89053C2; ATE512731T1; RU2007108307A; EP1799369B1; CN1984731A; ITUD20040167A1; PL1799369T3; EP1799369A1; BRPI0513940A

Abstract

Metallic wire/rod spooler (1) of the type with a mandrel with a vertical axis with a plurality of sectors (10) that move hinged to the base (11) in a discoidal base plate (14), in connection with upper petals (11) hinged on the upper part (110) of said mandrel that moves from a position orthogonal to the mandrel axis (110) to form the wire/rod coil, to a position substantially directed upwards to allow the extraction of the formed wire/rod coil, and comprising safety means against the movement of said sectors (10) during the formation of said coil, wherein three fixing means are provided for safety before the start of rotation and during the rotation of said mandrel (1-10):I - said petals in the hinging (110) have a tooth (111) that in lowering rotation of coil formation, externally fix the respective sector (10) on the upper part to couple it against the centrifugal force, forming the first upper safety joint (e); II - said sectors (10) are embedded downwardly within the base flange (14) to form the second safety joint against the centrifugal force (IN) and III - an internal T-shaped intermediate tooth (101) being provided as an extension of each sector (10) that is fixed within a female groove also Tshaped with clearance (1230) of a central connection body (123) of said mandrel.

Description

DESCRIPTION

METALLIC WIRE COIL WINDING INSTALLATION ON AN IMPROVED

WINDING MANDREL

Technical Field This invention relates to a metallic wire coil winding installation on an improved winding mandrel.

In particular with a safety system for a mandrel with more movable sectors that are retractable towards the coil extraction side, with a safety system to protect against the danger of opening or opening release of said sectors due to the centrifugal force, according to the preamble of the main claim.

This invention applies to all types of spooler for the winding of metallic wire or rods originating from an upstream in-line working installation, for example a hot rolling plant.

However, there is no reason to exclude the possibility that the upstream working installation may be of another type, for example cold rolling, drawing, surface treating of the wire, etc.

Background Art

Installations of this type are known in the present state of the art.

Likewise, the following are known in said installations: insertion means of the wire to be wound around the mandrel and safety means to protect against the danger of the release of component elements from the mandrel during its rotation.

Safety systems are also well known that prevent the component sectors forming the winding mandrel from being securely blocked in a working position and unblocked at the end of the process to allow the extraction of the finished coil.

Drawbacks of the Background Art

Safety systems are necessary to prevent the centrifugal force produced by the high rotation speed of the mandrel during the winding from causing the release of these sectors from their connection system with the danger of serious accidents. The well-known systems are unreliable and fail to guarantee complete safety.

The insertion systems for the wire around the mandrel are also necessary for the correct working of the installation, but existing systems are complicated, complex and cumbersome, but above all unreliable, therefore if a good grip of the wire is not achieved at the beginning then stoppages are produced that in addition to blocking the installation cause serious and very dangerous consequences.

Aim of this Invention

The problem and the aim of this invention is to simplify and improve the qualitative characteristics of the installation thus allowing an optimal performance.

Solution to the Problem and Inventive Concept

The problem is solved with the characteristics of main claim.

The characteristics of the sub-claims determine preferred solutions.

Advantages The advantages obtained with this solution are evident as it provides improved performance to the entire spooler installation.

Description of a Preferred Embodiment

The invention will be now better described with the aid of the enclosed Figures including illustrated preferred solutions, wherein: Fig. 1 , 2 represent a schematic side and plan view of the winding assembly in the preferred solution and Fig. 3, 4, 5 represent the respective three wire clutch stages.

Fig. 6, 7 represent a schematic side and plan view of one less preferred variant of the winding assembly and in Fig. 8, 9, 10 the respective three wire clutch stages are represented.

Fig. 11 , 13 represent a partial view of the winder mandrel, respectively in an elevated side and plan view with the petals lowered in the position for coupling the sectors of the mandrel with three safety connections, namely an upper connection by means of a tooth of the petal that couples externally, an intermediate slideable fixing connection and a lower embedded connection of the base of the mandrel sectors in the plate that constitutes the base flange of the reel, and Fig.12 is as seen in Fig.11 , but with the petals raised for the release position.

Detailed Description of the Figures

As disclosed in the previous Figures, the system includes a winder reel (1) actuated rotationally downwards by an electric motor with bevel gear transmission (AM). Said reel comprises a base flange (14) and a mandrel made up of four (but could be different) sectors (10) that are mobile and hinged on the lower part (111) and moved on the upper part from a cylindrical form to a truncated cone form, namely withdrawn towards the centre, by means of four petals (11) that rotate on the respective pins (110) by means of a toothed connection (AD) with an axial shaft (120) that is holed (122) for the passage of cooling liquid, and movable vertically and axially by means of lower fluid dynamic cylinders (121) in such a way that with gears they can rotate from a position orthogonal to the mandrel rotation axis (1-10) Fig.1 ,6,11 , to an upward position (Fig.12), the first said operating position being for coil formation and the second for coil extraction.

Furthermore, the mandrel (1-10) includes:

- the petals in the hinging (110) have a cam (112) that in rotation downwards push the sectors (10) outwards and at the same time the respective tooth of each petal (111) fixes the upper part of the corresponding sector (10) for safety, forming a first upper safety joint (IS) against the centrifugal force;

- said sectors (10) are embedded on the lower part in the base flange (14) near the hinging (111) to form a second safety joint against the lower centrifugal force (IN) and

- an internal intermediate T-shaped tooth (101) is provided as an extension of the sector (10) that is fixed in a female groove that is also T-shaped loosening from (1230) a massive central body (123) that borders the axially movable central shaft (120).

In this way the sectors (10) can move freely with the T-shaped tooth (101) on the interior of said female fixing groove (1230), but this forms a third intermediate safety joint (IM) against the danger that due to the very high centrifugal force said sectors may be released and projected outwards before the formation of the turns as will be explained later with the clutch device (2). As can be seen in the Figures the outward movement of the sectors (10) occurs by rotation around the base pins (111) and against the push of lower spring means (13), causing the movement by means of the cam (112). In the position of cylindrical coil formation the T-shaped intermediate tooth (101) is in abutment towards the internal walls of the female fixing seat (1230) as can be seen in section A-A Fig.13 of Fig.11 , while it is withdrawn towards the centre detaching slightly as can be seen in the hatching in Fig.12.

In this way a triple safety connection is provided against the centrifugal force for the large masses in rotation that are particularly dangerous before the formation of the coil.

With regard to the insertion of the wire, the sole presence of the wire insertion device that is not semicircular but tangential with circular arched continuation (2) is decisive. Said device includes an arm (21) and a forearm (23) with intermediate articulation (22), the arm being hinged at the base (20) of the structure and operated by a fluid dynamic jack (24) for the arm and a fluid dynamic jack (24') for the forearm (23), in three positions: I- a first position adherent to the cylinder mandrel (1-10) and to the base flange (14) for the entrance and conveying of the wire and the fixing of the wire in the clutch groove in the flange (14);

II- a second position immediately adjacent, namely slightly detached from the first and activated by means of a pressure sensor in the oil of said forearm jack (24') and a movement sensor of its shaft for the clutch strike;

III- a distant additional position outside the encumbrance of coil formation by means of said arm jack (24).

A counter safety jaw can be provided but is not necessary, (3) one that is similar to the first and controlled like the first (Fig.6-7) but in which this does not constitute a wire guide but rather only a semicircular flat surfaced cover above the groove (141) for protection from the danger of the release of the wire head completed with the first device. From the research carried out, this device would thus prove superfluous since fixing always occurs within the first coupling device (2).

The three coupling stages are illustrated for both cases in the Figures respectively from 3 to 5 for the preferred solution in Fig.1 and 2 and in Figures 8 to 10 for alternative Figures 6,7, with the counter-protection cover system. The functioning of the clutch occurs as follows: a) the wire (Fig.3) is engaged in the entry mouth (230) of the forearm of the clutch device whose shape is rectilinear and tangential to the mandrel (1-10); b) the central part, immediately after the entrance (230) in the arm (23) continues with an arched section conjugated with the external cylindrical surface of the mandrel (231), which pushes the wire in a cuneiform way in the ribbed groove in a herring bone or spiral form to convey the wire even further in traction in the groove (141), the pulling speed of the mandrel (V2) being greater than the advancing speed of the wire (V1); this second part includes a pressure plate (232) that pushes down on the wire in the groove (141). c) The third part (233) only serves for holding and is flat to prevent the wire head from escaping upwards. In said area the wire is clamped with the traction determined by the speed difference V1<V2. In this way it is understood that a counter-guide is not necessary, that would be provided as an aid in the case that greater protection for work safety is necessary.

The entire system is thus simplified providing maximum safety and performance. Always in the interests of safety, the entire device is housed in a sturdy structure with metallic plates completely surrounding the device to avoid any danger or accidents.

The working process is shown in the following by a closed circuit camera with monitoring in a control cabin and remote control for the operator. Advantageously, said clutch device (2) is substantially placed in the posterior quadrant of the wire clutch side of said mandrel seen from above. Advantageously, it can substantially be placed at 45° to said quadrant, in this way providing a greater cover width of the wire insertion (in the Figure it is at 90°). Axial orientation is extremely advantageous, namely downstream since in this case the a maximum extended coverage of the device is achieved, that is to say U-shaped with a cover - more than sufficiently - at 180°, wherein the device is U-shaped at the limit with only one shank that forms its rectilinear wire entry part (230) while the remaining two parts (231 ,233) form a maximum circular arch of 180°.

Claims

1.- Metallic wire/rod spooler (1) of the type with a vertical mandrel with a plurality of sectors (10) that move hinged at the base (11) in a discoidal base plate (14), in connection with of upper petals (11) hinged on the upper part (110) of said mandrel that moves from a position orthogonal to the mandrel axis

(1-10) to form a compact wire/rod coil, to a position substantially directed upwards to allow the extraction of the formed wire/rod skein, and including safety means against the movement of said sectors (10) during the formation of said coil, characterized in that three fixing means are provided for safety before the start of rotation and during the rotation of said mandrel (1-10):

I - said petals in the hinging (110) have a tooth (111) that in lowering rotation of coil formation, externally fix the respective sector (10) on the upper part to couple it against the centrifugal force, forming the first upper safety joint (e); Il - said sectors (10) are embedded on the lower part in the base flange

(14) to form the second safety joint against the centrifugal force (IN) and

III - an internal T-shaped intermediate tooth (101) is provided as an extension of each sector (10) that is fixed in a female groove that is also T-shaped with clearance (1230) of a central connection body

(123) of said mandrel.

2.- Metallic wire/rod spooler (1) according to the previous claim, characterized in that said petals in their hinging (110) have a cam (112) that in rotation downwards push the sectors (10) outwards and they interact against the action of a base spring (13) that also stretches to maintain said sectors (10) withdrawn.

3.- Metallic wire/rod spooler (1) according to any of the previous claims, characterized in that it further includes a wire insertion device that is not semicircular but tangential with circular arched continuation (2) with an arm (21) and forearm (23) that is articulated (22), operated by driving means (24, 24') in three positions:

I - a first position adhering to said cylinder mandrel (1-10) and to said base flange (14) for the entrance and conveying of the wire and the fixing of the wire into the clutch groove (141) in the flange (14);

II - a second position immediately adjacent, namely slightly detached from the first and actuated by sensor means of the future clutch of the wire head in said groove (141) that at the same time allows helical ribbings present on the sector side (10) in said groove (141) to pull said wire head further in said groove by the speed difference existing between the advancement of the wire V1 and the peripherical traction speed of the mandrel-reel V2, such that V1 <V2;

III - a distant additional position outside the encumbrance of coil formation when the advancing speed of the wire V1 and the peripherical rotation speed of the mandrel are identical, namely in the condition of substantial contemporary speed V1=V2 that determines the prevalence of the speed imposed by the traction of mandrel rotation.

4.- Metallic wire/rod spooler (1) according to any of the previous claims, characterized in that said wire clutch device (2) is substantially placed in the posterior quadrant of the wire clutch side of said mandrel seen from above.

5.- Metallic wire/rod spooler (1) according to any of the previous claims, characterized in that the axial orientation of the wire insertion device (2) is placed downstream and is substantially U-shaped, wherein the U-shape implies that its shank forms said rectilinear wire entry part (230) while the remaining two parts (231 ,233) proceed with the circular arched form conjugated with the winding mandrel.

6. - Metallic wire/rod spooler (1) according to any of the previous claims, characterized in that the entire winder device is housed in a protective metallic structure that is completely closed and armoured to prevent any piece of the device in the case of an accident, obstruction or detachment of parts from being projected into the surrounding exterior, display means being further provided with a closed circuit camera for the control and remote control by means of a monitor and remote control means for the operator.