JPH1080724A - Coiling/uncoiling device for coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coiling/uncoiling device for a coil capable of efficiently and uniformly heating/temp. holding the coil. SOLUTION: The coiling device 2/uncoiling device 3 of a coil 1 is provided with a coiling device 2 to coil a hot rolled material after rough rolling, an uncoiling device 3, which is arranged at the downstream of the coiling device 2, has a peeler 16 to peel off coil end and uncoils the coil 1, a lifter 5, which is arranged above the coiling device 2/uncoiling device 3 and arranged on the rail 4 extending from the upstream of a hot rolling mill to downstream movable thereon and transfers the coil 1 from the coiling device 2 to the uncoiling device 3 and heat panels 6, which are arranged facing both end faces of the coil l transferred to the uncoiling device 3 and heat its end faces and inner diameter part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil winding / rewinding device in a hot rolling facility.

[0002]

2. Description of the Related Art In a hot rolling facility in which finish rolling is performed after rough rolling, as shown schematically in FIG.
It is rolled to a bar of 0 to 50 mm thickness and then further rolled in a finishing mill to a strip of several mm thickness. In this case, there is a problem that the time until the finish rolling is completed after the rough rolling is completed is long, and the rear end of the bar is lower in temperature than the front end, so that uniform finishing is difficult. Therefore, as schematically shown in FIG. 5B, a method has been disclosed in which a bar after rough rolling is wound into a coil shape and finish-rolled while unwinding the bar. According to this method, the temperature of the entire bar is prevented from lowering, and the finish rolling is performed from the rear end in the rough rolling, so that the temperature difference between the front and rear ends of the bar can be made substantially the same.

[0003] In a coil winding / rewinding device using this method, for example, a coil transfer mandrel is inserted into a hollow hole of a coreless coil wound by a winding device not using a mandrel, and this mandrel is attached. There is a type that swings and conveys to a rewinding device to rewind the coil.
However, even in such a winding / unwinding device, when focusing on the temperature distribution in the bar width direction, the coil end portion is easier to cool than the center portion of the coil width, and the inside of the inner winding of the coil is exposed to air. It was easy to get cold because it was exposed. Furthermore, since the winding is performed without a core that does not use a mandrel, the winding speed cannot be increased, and there is a problem that the entire body is cooled. Therefore, a method of heating both end surfaces of the coil with a heat panel having a burner or the like has been proposed.

[0004] In addition, for thin rolled material,
In order to increase the winding speed, there is a coil winding / rewinding device for winding a coil using a mandrel as shown in FIG. In this winding / unwinding device, the material to be rolled conveyed to the mandrel 19 is wound and fixed by a wrapper 20 having a wrapper roll 20r, and then the wrapper 20 is used for forming the coil 1 as shown by a broken line. When the coil 1 is retracted to a position where it does not interfere and the diameter of the coil 1 reaches a predetermined size, the coil end is peeled off from the coil surface by the peeler 21 and rewinding is performed as shown by a dashed line. Also in this case, when focusing on the temperature distribution in the bar width direction, the ends of the coil were easier to cool than the center part of the width of the coil, and the inside of the inner winding of the coil was easily cooled because heat was taken by the mandrel. Therefore, a method of heating both end surfaces of the coil with a heat panel having a burner or the like has been proposed.

[0005]

As described above, when the both end surfaces of the coil are heated by the heat panel, there are the following problems. (1) In a coil winding / rewinding device that does not use a mandrel and is wound without a core, the coil is transported to a rewinding device by a transfer mandrel and rewinding is performed. Yes, the effective area of the heat panel is greatly reduced, and sufficient heat shielding (heat shielding)
Can not.

(2) In a coil winding / rewinding device for winding using a mandrel, since the material to be rolled is wound around the mandrel by a wrapper roll, the effective area of the heat panel is reduced and sufficient heat is generated. Shield (heat shielding) cannot be performed. Also, even if a heat panel is provided inside the innermost winding of the coil, the heat is deprived by the mandrel,
There was still a problem that the temperature dropped.

(3) Further, as described above, even if the both end faces of the coil are heated by the heat panel, much of the heat escapes upward and the efficiency is poor, and it is necessary to provide some kind of heat retaining means. As shown in FIG. 6, since the peeler is provided on the upper part of the coil, it is not possible to provide a heat retaining means for covering the upper surface of the coil.

The present invention has been made to solve the above-mentioned problems. That is, an object of the present invention is to provide a coil winding / rewinding device capable of efficiently and uniformly maintaining and heating the coil.

[0009]

According to the present invention, after a hot-rolled material is roughly rolled, it is wound into a coil, and the coil (1) is unrolled. A winding / unwinding device, which is a winding device (2) for winding a hot-rolled material after rough rolling into a coil, and a peeler (downstream of the winding device) for peeling off a coil end. 16) a rewinding device (3) for rewinding the coil; a rail (4) provided above the winding device and the rewinding device and extending from upstream to downstream of the line; A lifter (5) movably provided to transfer the coil from the winding device to the rewinding device; and a lifter (5) provided opposite to both end surfaces of the coil transferred to the rewinding device. Heat panel for heating the inner diameter ( ) And, the winding-unwinding device of the coil, characterized in that it comprises a are provided.

The present invention described above focuses on the time difference between coil winding and rewinding, and takes into account that the temperature of the coil is small when the winding is completed in less than half of the unwinding time. And rewinding are completely separated, and the coil is to be kept heated only when the coil is unwound. Then, by transferring between the winding device and the rewinding device by the lifter (5), the coil transfer mandrel is not required, and the winding device (2) suitable for winding the material to be rolled is used for winding the coil. In the rewinding of the coil, a rewinding device (3) suitable for heating the coil can be used. Also, by providing the peeler (16) of the rewinding device on the rail (4) of the lifter, a space can be formed above the coil on the rewinding device. Further, a heat cover (7) for keeping the heat of the heat panel (6) for heating the coil so as not to escape may be attached by utilizing this space.

According to an embodiment of the present invention, the lifter includes a traversing mechanism that traverses the rail,
It is preferable to include a coil holding mechanism for inserting and holding a hook in a hollow portion of the shaft core when transferring the coil, and a coil lifting mechanism for lifting and lowering the held coil.

In the above-described embodiment of the present invention, the hook is inserted into the hollow portion of the shaft core of the wound coil, the coil is gripped, lifted, moved to the rewinding device, and lowered thereon. Thus, the lifter can smoothly transfer the coil.

The winding device (2) is a three-roll bending type winding device having a cradle roll, and the rewinding device (3) further has a cradle roll. By using such a three-roll bending type winding device, the hot-rolled material after the rough rolling can be reliably wound into a coil shape. In addition, by having the cradle roll, the roll can be reliably rotated during winding / unwinding.

Further, it is preferable that a heat panel is provided in the winding section. By providing such a heat panel, it is possible to perform heat retention during winding.

Further, according to the embodiment of the present invention, an intermediate heat station (11) provided with the heat panel (8) and the cradle roll (10) between the winding device and the unwinding device. It is preferable to provide a waiting time between the winding of the coil and the rewinding while heating the intermediate heating station.

The above-described embodiment of the present invention relates to an intermediate heat station provided for smoothly performing a series of operations from coil winding to rewinding. In this way, by providing the intermediate heat station, even if a waiting time occurs between the winding and the rewinding of the coil, the coil can be kept warm and the temperature of the coil can be prevented from lowering. . In addition, by sequentially moving the coil, a series of operations from coil winding to rewinding can be performed continuously, and efficient operation can be performed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. In addition, the same reference numerals are given to portions common to the related art, and duplicate description will be omitted.

FIG. 1 is a side view of a coil winding / rewinding device of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. Winding of the coil of the present invention shown in these figures
The rewinding device includes a winding device 2 that winds the hot-rolled material after the rough rolling into a coil shape, a rewinding device 3 that is provided downstream of the winding device 2 and rewinds the coil 1, and a winding device. And a rail 4 provided above the rewinding device 3 and extending from upstream to downstream of the hot rolling equipment line;
A lifter 5 movably provided on the upper side for transferring the coil 1 from the winding device 2 to the rewinding device 3;
And a heat panel 6 that is provided to face both end surfaces of the coil 1 transferred to the heater and heats the end surface and the inner diameter portion. In FIG. 1, the illustration of the front heat panel 6 is omitted.

The winding device 2 is a three-roll bending type winding device having a cradle roll 12. By using such a three-roll bending type winding device,
The hot-rolled material after the rough rolling can be reliably wound into a coil. In addition, by having the cradle roll 12, the roll can be reliably rotated during winding.

The winding device 2 is used exclusively for winding.
There is no rewind function. Although not shown,
After the winding of the coil 1 is completed, the mandrel 13 inserted into the core of the coil 1 is moved so that the lifter 5 can grip the coil 1 when transferring the coil 1 to the rewinding device 3. It can be slid and retracted in the axial direction.

The winding device 2 may be of a down coiler type or a coreless coiler type (for example, a winding and rewinding device).

Further, in FIG. 1, the winding section is not provided with a heat panel, but may be provided. By providing such a heat panel, it is possible to perform heat retention during winding. Further, a heat cover described later may be provided to enhance the heat retaining effect.

The rewinding device 3 does not require a mandrel or a wrapper on both end surfaces of the coil 1, that is, a device capable of rewinding without a so-called core. The cradle roll 15 has a cradle roll 15, the coil 1 is supported by the cradle roll 15, and an end of the coil 1 is peeled off by a peeler 16 to perform rewinding. By having such a cradle roll 15, the roll can be reliably rotated during rewinding.

The peeler 16 is rotatably connected to a peeler supporting member 16a fixed to the rail 4. The peeler 16 contacts the coil 1 only when the end of the coil 1 is peeled off at the beginning of rewinding. It has been evacuated to the position shown. A heat panel 6 that heats both end surfaces of the coil 1 is provided at a side portion of the rewinding device 3, that is, at a position facing the both end surfaces of the coil 1 transferred to the rewinding device 3. Although not shown, the heat panel 6 has a plurality of burners. As shown in FIG. 2, the heat panel 6 can be moved toward and away from both end faces of the coil 1 by an actuator 6a.

The embodiment shown in FIG. 1 is provided with a heat cover 7 for further improving the heat retaining effect. That is, the coil 1 transferred to the rewinding device 3 is placed above the rewinding device 3.
A heat cover 7 for covering the upper surface and keeping the temperature is fixed to the rail 4, and as shown in FIG. 2, the cross section is formed in a substantially U-shape so that the heat of the heat panel 6 is not released. It is designed to improve sex. However, the lifter 5 is provided at the center of the heat cover 7 by the rewinding device 3.
It has been cut out so that it can be reached directly above. Note that, similarly to the heat panel 6, the heat cover 7 may be provided with a burner for heating the coil 1.

Although not shown, the rail 4 is supported by a floor or a wall in a factory, and has at least a length from the winding device 2 to the rewinding device 3. As shown in FIG. 2, the rails 4 are paired, and a lifter 5 is mounted thereon. The lifter 5 includes a coil gripping mechanism and a coil elevating mechanism in addition to a traversing mechanism that traverses on the rail 4. The traversing mechanism of the lifter 5 includes a trolley 5t having four wheels 5w, and a moving actuator 5a whose tip is connected to the trolley 5t and whose main body is fixed to an end of the rail 4.
In addition, the coil gripping mechanism includes a motor 5m provided on the carriage 5t, a hook 5f provided to be able to protrude and retract from the shaft core of the coil 1, and a rotational movement of the motor 5m to expand and contract in the width direction of the coil 1. And a power transmission mechanism 5b for converting and transmitting. Further, the coil elevating mechanism is constituted by an elevating actuator 5c that elevates and lowers in the vertical direction integrally with the motor 5m, the hook 5f and the power transmission mechanism 5b. The lifting / lowering actuator 5c includes a truck 5t.
A plate-like motor support member 5 supporting the motor 5m is provided at the top of the motor support member.
n are connected. On this motor support member 5n, a motor 5m is supported so that a rotating end thereof is directed downward in the vertical direction, and the end extends through between the rails 4 and is composed of a bevel gear 5u or the like. Power transmission mechanism 5
b. As shown in FIG. 2, the hook 5 f has, for example, an L-shape, and its tip can be inserted into a hollow portion of the shaft core of the coil 1. In addition, instead of the moving actuator 5a constituting the traversing mechanism of the lifter 5, a driving device is mounted on a truck 5t,
You may make it run on the rail 4 by self-propelled.

Next, the operation of the coil winding / rewinding device of the present invention will be described with reference to FIGS. In FIG. 3, (A) shows the start of the transfer, (B) shows the completion of the transfer, and (C) shows the standby state. The position of the lifter 5 at the start of the transfer is a winding position, the position of the lifter 5 at the completion of the transfer is a rewind position, and the position of the lifter 5 at the standby is a standby position.

(1) At the time of winding the coil 1, the lifter 5 is waiting at the standby position as shown in FIG. At this time, the hook 5f is retracted to the retracted position shown by the broken line in FIG. (2) When the winding of the coil 1 is completed and the transfer of the coil 1 is started, first, the mandrel 13 (see FIG. 3C) is slid and retracted, and then as shown in FIG. Then, the lifter 5 is moved from the standby position to the winding position by the action of the movement actuator 5a. When the lifter 5 reaches the winding position, the motor 5m
To set the hook 5f to the gripping position shown by the solid line in FIG. Further, the lifting / lowering actuator 5c
When the coil 1 is lifted by the action of and transferred to the rewinding device 3, the coil 1 is prevented from contacting the cradle rolls 12 and 15.

(3) Thereafter, as shown in FIG.
The moving actuator 5a is contracted, and the lifter 5 is moved in parallel to the rewind position. At this time, heat panel 6
Is retracted to a retracted position shown by a solid line in FIG. 2 so as not to contact the lifter 5. When the coil 1 reaches the rewind position, the coil 1 is lowered onto the cradle roll 15, and the hook 5f is moved to the retracted position shown by the broken line in FIG.

(4) Thereafter, as shown in FIG.
The lifter 5 is moved to the standby position, and the heat panel 6 is moved closer to the heating position indicated by the broken line in FIG. (5) With this, the transfer of the coil 1 is completed, and the peeler 16
To start the rewinding of the coil 1. Hereinafter, when winding and rewinding of the coil 1 are continuously performed, the operations (1) to (5) may be repeatedly performed.

According to the coil winding / rewinding device of the present invention described above, the winding and rewinding of the coil 1 are completely separated, and the winding is completed in less than half of the rewinding time. 1 is capable of winding at high speed even with a thin material to be rolled, and by using the lifter 5 to transfer the coil 1, both end faces of the coil 1 can be rewinded. It eliminates the need for a device such as a coil transfer mandrel that obstructs heating of the coil 1, and also eliminates the need for a mandrel and wrapper that obstructs heating both end surfaces of the coil 1 by performing so-called unwinding without a core. Further, by providing the peeler 16 on the rail 4 of the lifter 5, a peeler that is obstructive for keeping the upper surface of the coil 1 warm is unnecessary, and a sufficient heat for keeping the coil 1 warm is provided. The panel 6 that can be provided, efficiently coil 1 can be coercive heating.

FIG. 4 shows the winding and winding of the coil of the present invention.
14 shows another embodiment of the rewinding device, in which an intermediate heat station is provided. The coil winding / rewinding device shown in this figure is provided with an intermediate heat station 11 provided with a heat panel 8 and a cradle roll 10 between the winding device 2 and the rewinding device 3 to wind the coil 1. The intermediate heat station 11 has a function of making the waiting time from the start to the rewinding wait while keeping the heating in the intermediate heat station 11. Although not shown, the heat cover 9 provided in the intermediate heat station 11 is divided at the center so that the lifter 5 can pass freely. According to this embodiment, when the winding of one coil 1 is completed while the winding of the other coil is completed as shown by a broken line, the operation is performed according to the above-mentioned operations (1) to (4). The coils are transferred to the intermediate heat station 11. When the rewinding of the coil 1 is completed, the heat panel 8 is retracted, the lifter 5 is moved to the intermediate heat station 11, and the coil is gripped and lifted.
Then, the coil is transferred to the rewind position according to the operation of (5) to start the rewind. The standby position of the lifter 5 is
It may be located between the winding position and the intermediate heat station 11 and between the intermediate heat station 11 and the rewind position, and a plurality of intermediate heat stations 11 may be provided.

According to this embodiment, even if a waiting time occurs between the winding and rewinding of the coil 1, the end surface and the surface of the coil 1 are heated by the intermediate heat station 11, so that the coil 1 is heated. 1 can be prevented, and furthermore, by sequentially moving the coils, a series of operations from coil winding to rewinding can be continuously performed, and efficient operation can be performed. it can.

It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0035]

According to the coil winding / rewinding device of the present invention described above, coil winding and rewinding are completely separated, and the coil is transferred between the winding device and the rewinding device by a lifter. By doing so, it is possible to concentrate on winding the coil at the time of winding that is completed in less than half the time of the rewinding time, and sufficient heat panel to keep and heat the coil at the time of rewinding that takes a long time compared to the winding time Can be provided, the coil can be efficiently and uniformly maintained and heated, and finally a uniform finishing process can be performed. Further, if an intermediate heat station is added, a series of operations from winding to rewinding of the coil can be continuously and efficiently performed while preventing the temperature of the coil from lowering.

[Brief description of the drawings]

FIG. 1 is a side view of a coil winding / rewinding device of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

3A and 3B are diagrams for explaining the operation of the coil winding / rewinding device of the present invention, wherein FIG. 3A shows the start of transfer, FIG. 3B shows the completion of transfer, and FIG. I have.

FIG. 4 shows another embodiment of the coil winding / rewinding device of the present invention, in which an intermediate heat station is provided.

FIG. 5 is a diagram schematically showing a hot rolling facility that performs finish rolling after rough rolling.

FIG. 6 is a diagram illustrating a conventional coil winding / rewinding device for winding using a mandrel.

[Explanation of symbols]

 Reference Signs List 1 coil 2 winding device 3 rewinding device 4 rail 5 lifter 5w wheel 5t trolley 5a moving actuator 5m motor 5n motor support member 5f hook 5b power transmission mechanism 5c lifting actuator 6 heat panel 6a actuator 7 heat cover 8 heat panel ( 9 Heat cover (for intermediate heat station) 10 Cradle roll (for intermediate heat station) 11 Intermediate heat station 12, 15 Cradle roll 16 Peeler 16a Peeler support member 19 Mandrel 20 Wrapper 20r Wrapper roll 21 Peeler

Continued on the front page (51) Int.Cl. ⁶ Identification number Reference number in the agency FI Technical display location C21D 9/56 101 C21D 9/56 101K 9/68 9/68

Claims (5)

[Claims] An apparatus for winding and rewinding a coil provided on a line for performing hot rolling and rough rolling, winding the coil into a coil, finishing rolling while unwinding the coil (1), A winding device (2) for winding the hot-rolled material after the rough rolling into a coil shape; and a peeler (16) provided downstream of the winding device for peeling off the coil end. A rewinding device (3) for returning, a rail (4) provided above the winding device and the rewinding device and extending from upstream to downstream of the line, and movably provided on the rail; A lifter (5) for transferring from the winding device to the rewinding device; and a heat panel (6) provided opposite to both end surfaces of the coil transferred to the rewinding device and heating the end surface and the inner diameter portion. And characterized by having The winding of that coil
Rewind device. 2. The lifter (5) includes a coil gripping mechanism that inserts and grips a hook into a hollow portion of a shaft core of the coil when transferring the coil, in addition to a traversing mechanism that traverses the rail. The coil winding / rewinding device according to claim 1, further comprising: a coil lifting / lowering mechanism for lifting / lowering the gripped coil. 3. The winding device (2) is a three-roll bending type winding device having a cradle roll,
The winding and rewinding device according to claim 1, wherein the rewinding device (3) further comprises a cradle roll. 4. The coil winding / rewinding device according to claim 3, wherein the winding unit includes a heat panel. 5. The heat panel (8) and a cradle roll (1) between the winding device and the rewinding device.
0) an intermediate heat station (11) with
The waiting time from coil winding to rewinding is maintained while heating at an intermediate heat station.
5. The coil winding / rewinding device according to any one of claims 1 to 4.