JPH0824947A - Coiling device - Google Patents

Abstract

PURPOSE:To enable the coiling and the recoiling in a high speed and to thin sheet and further, to enable the carry-out of a coil. CONSTITUTION:This coiling device is arranged with a mandrel 10 as a coiling core of the coil 8 and a wrapper device for guiding the initial coiling of the coil 8 to the mandrel 10. Further, a mandrel heating device 14 wrapping the outer surface of the mandrel 10 so as to be attachable/detachable with a hollow cylindrical heater 19, an end surface heating device 29 arranged so as to be faced to the end surfaces of the coil in the mandrel 10 and heating the end surfaces and a coil carry-out device 25 arranged at the lower side of the mandrel 10 and carrying out the coil 8 to the free end side of the mandrel 10 by pushing up the coil are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device provided on a rolling line of a hot rolling facility for winding and unwinding, and more particularly to a winding device for preventing local cooling of a coil having a thin plate thickness.

[0002]

2. Description of the Related Art Hot rolling equipment comprises a rough rolling mill and a finish rolling mill. Recently, a winding and rewinding machine was installed between the rough rolling mill and the finish rolling machine, and the rough rolled material was once wound up on the winding and rewinding machine, and then rewound from the tail end of the rolled material. A device for sending to the finishing rolling mill was developed, and it was possible to improve the temperature drop of the material to be rolled by winding it into a coil and to roll from the leading edge to the trailing edge of the material at a nearly constant rolling speed. .

With the development of a thin slab continuous casting machine,
Hot rolling equipment without a rough rolling mill has been put into practical use, and continuous casting with a thickness of about 50 mm to 70 mm instead of a continuous casting material having a conventional thickness of about 210 mm,
This thin slab can be directly charged into a heating furnace, soaked at a predetermined temperature, and then finish-rolled by a finish rolling mill.

[0004] By the way, recently, there has been studied a facility which is further improved to reduce the number of finish rolling mills and shorten the rolling line. FIG. 7 shows an example of such equipment. A first winding and rewinding machine 3 is provided on the upstream side of the rough rolling mill 2, a second winding and rewinding machine 4 is provided on the downstream side, and a finish rolling mill train 5 and a down coiler 6 are provided on the downstream side. . When the material 1 to be rolled of about 50 mm to 70 mm is supplied from the continuous casting machine, the rough rolling machine 2 performs forward rolling, the second winding and rewinding machine 4 winds, and then the reverse rolling performs the first winding. Rewinding machine 3
Roll it up. In this way, normal rotation and reverse rotation are repeated 10 mm
After the front and back, it is wound on the first winding and rewinding machine 3 and further rolled by the rough rolling machine 2 to about 6.5 mm, and then finish rolling is performed on the finishing rolling mill train 5 to about 1.2 mm and down. Wind on coiler 6.

FIG. 8 shows the structure of a conventionally used take-up and rewinding machine, which comprises a bending roll 7 for giving a curl to the material 1 to be rolled, and a cradle roll 9 for winding it around a coil 8. Rewinding is performed in the directions indicated by arrows A and B, and rewinding in the direction of arrow B is possible without an axis, but rewinding in the direction of arrow A is performed by inserting a shaft such as a mandrel. I do.

[0006]

The speed increases rapidly as the plate thickness for winding and unwinding becomes thinner. Further, if the plate thickness of the coil becomes thin, the cooling becomes large, and the temperature of the coil end face in contact with the outside air and the temperature inside the coil are lowered. In the case of the winding and rewinding machine shown in FIG. 8, when the plate thickness is thin, there is no axis, so that it is difficult to wind it in a coil shape, and the shape is also elliptical, which makes high-speed winding and rewinding impossible. Also,
Since the coil cooling is large because of the thin plate, the plate thickness up to about 20 mm is the limit that can be used, and the requirements for the winding and rewinding machine shown in FIG. 7 cannot be satisfied.

There is a Steckel mill as a rolling mill for rolling the coil while keeping it warm. USP 4,430,875, JP-A-59-191502 and JP-A-59-19150.
The technical contents are disclosed in No. 3. The Steckel mill is composed of a rolling mill, a furnace provided on the upstream side and the downstream side of the rolling mill, and a winding machine provided in the furnace. Forward rolling mill,
Rolling is carried out by reversing, winding by the winders on the downstream side and the upstream side, and rewinding. In the case of the winding machine of this Steckel mill, since the tip of the coil is hooked on the winding shaft and fixed, the tip of the coil is easily scratched, and high-speed winding and rewinding are not possible. Further, since heating is performed in the furnace, there is a problem that scale is generated and quality is deteriorated.

When the winding fails, the coil is removed from the winding device and discharged outside the rolling line.
Since this unloading takes time and the rolling line must be stopped during this time, an apparatus for quickly unloading the coil that has failed to be wound has been desired.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat retaining and winding device capable of winding and rewinding a thin plate at high speed and having the heat retaining performance of the coil. . It is another object of the present invention to provide a winding device that can quickly carry out a coil that has failed to be wound out of the rolling line.

[0010]

In order to achieve the above object, in the invention of claim 1, one end is a free end and the other end is pivotally supported, and a mandrel serving as a winding core of a coil is provided around the mandrel. Wrapper equipment for guiding and retracting the initial winding of the coil around the mandrel, a mandrel heating device that wraps the outer surface of the mandrel and heats the mandrel, and the end surface of the coil of the mandrel is provided to face the end surface. And an end face heating device that heats the coil, and a coil unloading device that is provided below the coil of the mandrel and that pushes up the coil and removes it to the free end side.

Further, in the invention of claim 2, the mandrel heating device is provided with a first carriage that is movable in the axial direction of the mandrel, and is installed on the first carriage on the same axis as the mandrel, and the mandrel outer surface and inner surface. And a hollow cylindrical heater that can be fitted with.

Further, in the invention of claim 3, the coil unloading device is provided with a second carriage movable in the axial direction of the mandrel and to the lower side of the mandrel, and is installed on the second carriage and expands and contracts in the vertical direction. It has an elevating device and a coil support stand detachably installed between the elevating device and the coil wound around the mandrel.

Further, in the invention of claim 4, the end face heating device comprises a first end face heater provided on the free end side of the mandrel and a second end face heater provided on the axially supported side. The first end face heater is installed on the second trolley, and the second end face heater is fixed to a mandrel support.

Further, in the invention of claim 5, the first end face heater is divided into right and left with a mandrel as a center, and is attached to the second carriage so as to be openable and closable to the left and right.

Further, in the invention of claim 6, the mandrel heating device or the end face heating device is heated by any one of resistance heating, induction heating, and radiant heating for heating by radiant heat of a radiant body heated by combustion.

[0016]

According to the invention of claim 1, since the wrapper equipment is provided around the mandrel to guide the initial winding of the coil, it is possible to wind even a thin material to be rolled, and by using the mandrel, high speed is achieved. Winding and rewinding are also possible. Before winding the coil around the mandrel, retract the wrapper equipment and wrap the outer surface of the mandrel with a mandrel heating device to preheat it to prevent the inner winding side of the coil from cooling when the coil winding starts. You can Further, since the end face heating device provided on the end face of the coil heats the coil end face during coil winding and rewinding, cooling of the coil end face during winding and rewinding is prevented. Also,
When the winding of the coil fails, the coil unloading device provided below the coil pushes the coil up and takes it out to the free end side of the mandrel, so that the coil can be quickly unloaded.

According to a second aspect of the invention, the mandrel heating device comprises a first carriage that moves in the axial direction of the mandrel and a hollow cylindrical heater installed on the first carriage and installed on the same axis as the mandrel. So, as you move the first trolley towards the mandrel, the mandrel goes into the heater. When the mandrel is covered with this heater,
Heat to the temperature of the coil wound by the heater. This prevents the coil wound around the mandrel from being cooled by the mandrel.

According to the third aspect of the present invention, when a coil that fails to be wound occurs, the second carriage is moved to the lower side of the coil, the coil support is placed on the lifting device, and the lifting device lifts it. By receiving the weight of the coil by the second carriage and moving the second carriage in that state, the coil that has failed to be wound can be easily carried out of the rolling line.

In the invention of claim 4, since the first end face heater is installed in the second carriage, it can be moved in the axial direction of the mandrel, and the second end face heater is fixed to the support base of the mandrel. There is. This makes it possible to move the first end face heater according to the width of the coil to be wound. Also,
When unloading the coil that has failed to be wound, the first end face heater moves together with the second trolley, which does not hinder the unloading of the coil.

In the invention of claim 5, since the first end face heater can be opened and closed to the left and right, even if the hollow cylindrical heater fits the mandrel in the invention of claim 2, even if it moves on the mandrel shaft core. , Mutual interference can be avoided.

According to the sixth aspect of the invention, the mandrel heating device employs any one of resistance heating by electricity, induction heating by electricity, and radiant heating of a radiator heated by combustion.
Further, the end face heating device also employs one of the three to perform heating.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a side view of the embodiment, and FIG.
1 is a sectional view taken along line XX of FIG. 1, (B) is a sectional view taken along line YY, and (C).
Shows a ZZ arrow view. The mandrel 10 is supported on one side by a mandrel drive device 11 and is rotatably supported on the supporting end side. The mandrel driving device 11 is installed on the mandrel support base 12, and
To rotate. A rail 15 is provided in the same direction as the axis of the mandrel 10 on the floor which is one step lower than the mandrel support 12.

The mandrel heating device 14 comprises a first carriage 16 running on a rail 15 and a hollow cylindrical heater 19 mounted on the first carriage 16 and installed so as to have the same axis as the mandrel 10. Composed. The first carriage 16 travels by being pulled by a wire or the like. The heater 19 is fixed by a horizontal support member 18 fixed horizontally to a support member 17 provided vertically on the first carriage 16. The heater 19 is a hollow cylinder, has an inner diameter larger than the outer diameter of the mandrel 10 by several tens of millimeters, and is constituted by an arc-shaped square heating panel 21 with its heating surface facing inward. A fuel gas supply pipe 20 is arranged in each heating panel 21 to supply the fuel gas. An exhaust pipe 22 is provided on the top of the heater 19 along the axial direction, and collects combustion exhaust gas from each heating panel 21 and discharges it to the outside. The fuel is not supplied to the heating panel 21 provided on the top of the cylinder, but is heated by the combustion exhaust gas from another heating panel 21.

The coil carry-out device 25 is composed of a second carriage 26 that travels on the rails 15, four lifting devices installed on the second carriage 26, such as a jack 27 and a coil support base 28 shown in FIG. It The coil support base 28 is installed only when the coil is carried out. The second carriage 26 moves on the rail 15 by being pulled by a wire or the like.

The end face heating device 29 comprises a first end face heater 30 arranged at the tip of the mandrel 10 and a second end face heater 31 arranged at the supporting end side. As shown in FIG. 2 (B), the first end face heater 30 is composed of a semi-circular plate 32 obtained by dividing a circular disc having an opening larger than the diameter of the mandrel 10 in the center. A semi-circular disc support member 33 is joined to the lower end of the semi-circular disc 32, and the pin hole 3 is attached to the lower end thereof.
4 are provided. The second carriage 26 is provided with a support base 40 for supporting the first end face heater 30. By fitting a pin 41 provided on the support base 40 into the pin hole 34, the first end face heater is provided. 30 is set in the second carriage 26. A lower end corner of the semi-circular disc support member 33 is a partial gear 35, which meshes with each other in a state where the pins 41 are fitted in both pin holes 34, and one semi-circular disc 32 is outwardly centered on the pin hole 34. When rotated, the other half-disc 32
Also rotates outward about the pin hole 34 by the same angle. When one is rotated inward, the other is also rotated inward at the same angle. An arm 36 is provided on one of the semi-circular disc support members 33, and the arm 36
A hydraulic or pneumatic fluid cylinder 37 is provided at the tip of the cylinder, and the other end of the cylinder 37 is rotatably attached to a support base 40. The semicircular plate 32 is rotated by the operation of the cylinder 37. A large number of heating panels 38 are attached to the semicircular plate 32 with their heating surfaces facing the second end surface heater 31 side, and a fuel gas supply pipe 39 is connected to each heating panel 38.

The second end face heater 31 has the mandrel 1 at the center.
A disk having an opening larger than the outer diameter of 0 is provided with an upper support member 42 having a pin hole 43 in the upper portion and a lower support member 45 having a pin hole 46 in the lower portion. The upper pin 44 fixed to a member (not shown) is fitted into the pin hole 43 of the upper support member 42, and the pin hole 46 of the lower support member 45 is fitted.
A lower pin 47 fixed to the mandrel support base 12 is fitted in to support the second end surface heater 31. A large number of heating panels 38 are provided on the second end surface heater 31 as first heating surfaces.
It is attached toward the end face heater 30 side. The heating panel 38 is provided with a fuel gas supply pipe 39 similarly to the first end surface heater 30.

As shown in FIG. 2 (C), three wrapper equipments 48 are provided in the center of the mandrel 10, and are rotated by a cylinder (not shown) around a rotation center 49, so that the coil 8 is first transferred to the mandrel 10. During the winding of several rolls, guide and then retract to the position shown. The wrapper equipment 48 includes a guide portion 50 having a rotation center 49 at one end and a circular arc substantially the same as the outer circumference of the mandrel 10 at the other end, and a wrapper roll 51 provided near the guide portion 50 and pressing a coil against the mandrel.

FIG. 3 shows a heating panel 21 used in the heater 19 of the mandrel, (A) is a sectional view, and (B) is an XX sectional view of (A). The heating panel 21 includes an arc-shaped combustion chamber 55 and a grid-shaped radiator 56 provided on the front surface thereof. The fuel gas supply pipe 20 is connected to the combustion chamber 55, the fuel gas is burned in the combustion chamber 55, and the radiator 56 is heated by the combustion gas to perform radiant heating. FIG.
Shows a heating panel 38 provided in the first end face heater 30 and the second end face heater 31. It is the same as the heating panel shown in FIG. 3 except that the combustion chamber 55 and the radiator 56 are flat.

Next, preheating of the mandrel 10 by the mandrel heating device 14 will be described. Figure 5 shows mandrel 1
It is a figure which shows the preheating state of 0. As shown in FIG. 2B, the first end face heater 30 is opened to the left and right, the first carriage 16 is moved, and the heater 19 is fitted to the mandrel 10 so as to cover the mandrel 10. Next, the fuel gas is supplied from the fuel gas supply pipe 20 to the combustion chamber 55 for combustion, and the radiator 56 is heated by the combustion gas, and the mandrel 10 is radiantly heated by the radiator 56. The heating temperature of the mandrel 10 is controlled by the supply amount of the fuel gas, and is set according to the temperature of the coil to be wound. Immediately before the start of winding the coil 8 onto the mandrel 10, the mandrel heating device 14 returns to the position shown in FIG.

Next, the heating of the coil end surface by the end surface heating device 29 will be described. The first end face heater 30 is closed to form an integral disc shape, and the second carriage 26 is moved according to the width of the coil 8 to be wound as shown in FIG. At the start of winding the coil 8, the wrapper equipment 48 guides for the first few turns and then retracts to the position shown in FIG. 2 (C). From this time, the supply of fuel gas is started and combustion is performed to heat the radiator 56 to heat the coil end surface. Heating is performed during winding and rewinding to prevent cooling of the coil end surface and make the coil temperature uniform between the end surface and the inside.

When coil winding fails, for example,
When an accident occurs in the rolling line and the rolling work is interrupted, the wound coil is removed from the rolling line, and then the rolling is restarted. In such a case, the coil is carried out. 6A and 6B are views for explaining a coil unloading state, FIG. 6A is a side view, and FIG. 6B is a view taken along line XX of FIG. Coil 8
The second trolley 26 is moved so that the jack 27 is located under, and the coil support base 28 is installed on the jack 27.
The upper surface of the coil support base 28 has a V-shape suitable for supporting the coil 8. By pushing up the coil support base 28 with the jack 27, the weight of the coil 8 is reduced.
After moving to No. 8 and transferring the entire weight, the coil 8 can be carried out by moving the second carriage 26 in the arrow direction.
In this case, when carrying out the mandrel 10 and the coil 8 integrally, the mandrel 10 and the mandrel drive device 11
It is possible to carry out as a unit by disconnecting a coupling part (not shown).

In the above embodiment, the mandrel heating device 14
The end face heating device 29 and the end face heating device 29 both use the method of heating by the radiant heat of the radiant body 56 heated by combustion.
Electric resistance heating and electric induction heating can also be used for heating.

[0033]

As is clear from the above description, since the present invention allows the coil to be wound around the mandrel, high-speed winding and rewinding are possible, and by providing the wrapper equipment, the initial coil to the mandrel is provided. The winding can be surely performed. Further, by providing the mandrel heating device, it is possible to prevent the coil from being cooled by the mandrel at the initial stage of winding the coil. Further, by providing the end face heating device, cooling of the coil end face at the time of winding and rewinding is prevented. With such a heat retaining device, it is possible to wind and unwind over a wide range of plate thicknesses from a thick plate to a thin plate. Further, by providing the coil carry-out device, the coil that has failed to be wound can be carried out quickly.

[Brief description of drawings]

FIG. 1 shows a side view of this embodiment.

2A is a sectional view taken along the line XX of FIG. 1, FIG. 2B is a sectional view taken along the line YY of FIG. 1, and FIG. 2C is a sectional view taken along the line ZZ of FIG.

3A and 3B show a heating panel used for a heater of a mandrel, where FIG. 3A is a sectional view and FIG. 3B is a sectional view taken along line XX of FIG.

4A and 4B show a heating panel of an end surface heating device, FIG. 4A being a sectional view, and FIG. 4B being a sectional view taken along line XX of FIG.

FIG. 5 is a diagram showing a mandrel preheating state by a mandrel heating device.

6A and 6B are diagrams illustrating the operation of the coil unloading device, FIG. 6A is a side view, and FIG. 6B is a view taken along line XX of FIG.

FIG. 7 is a diagram showing an example of rolling equipment that requires a winder capable of high-speed winding and rewinding and having heat retention.

FIG. 8 is a diagram showing a configuration of a winding and rewinding machine which is conventionally used.

[Explanation of symbols]

 8 coil 10 mandrel 11 mandrel drive device 12 mandrel support stand 14 mandrel heating device 15 rail 16 first truck 17 support material 18 horizontal support material 19 heater 20,39 fuel gas supply pipe 21,38 heating panel 22 exhaust pipe 25 coil unloading Device 26 Second trolley 27 Jack (elevating device) 28 Coil support 29 End face heating device 30 First end face heater 31 Second end face heater 32 Half disc 33 Half disc support 34 Pin hole 35 Partial gear 36 Arm 37 Cylinder 40 Support base 41 Pin 42 Upper support material 43,46 Pin hole 44 Upper pin 45 Lower support material 47 Lower pin 48 Wrapper equipment 49 Rotation center 50 Guide part 51 Wrapper roll 55 Combustion chamber 56 Radiator

Claims (6)

[Claims] 1. A mandrel, one end of which is a free end and the other end of which is rotatably supported, and which serves as a winding core of a coil, and a wrapper equipment provided around the mandrel and capable of guiding and retracting the initial winding of the coil on the mandrel. Wrapping the outer surface of the mandrel, a mandrel heating device for heating the mandrel, is provided to face the end surface of the coil of the mandrel, an end surface heating device for heating the end surface, and is provided below the coil of the mandrel, A coil unloading device that pushes up the coil and removes it to the free end side. 2. The mandrel heating device comprises a first carriage that is movable in the axial direction of the mandrel, and a hollow cylinder that is installed on the first carriage on the same axis as the mandrel and that can fit the outer surface and the inner surface of the mandrel. The winding device according to claim 1, further comprising a heater. 3. The coil unloading device comprises a second carriage that is movable in the axial direction of the mandrel and below the mandrel, a lifting device that is installed on the second carriage and that expands and contracts in the vertical direction, and the lifting device. The winding device according to claim 1 or 2, further comprising: a coil support base detachably installed between the coil and the coil wound around the mandrel. 4. The end face heating device comprises a first end face heater provided on the free end side of the mandrel and a second end face heater provided on the axially supported side, and the first end face heater is The winding device according to claim 3, wherein the winding device is installed on the second carriage, and the second end face heater is fixed to a support base of a mandrel. 5. The winding device according to claim 4, wherein the first end surface heater is divided into right and left parts around a mandrel, and the first end surface heater is attached to the second carriage so as to be openable and closable left and right. . 6. The mandrel heating device or the end face heating device is heated by any one of resistance heating, induction heating, and radiant heating for heating by radiant heat of a radiant body heated by combustion. , 2, 4, 5 winding device.