JPH1080723A - Coil end face heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat the range corresponding to the size of a coil diameter. SOLUTION: This device is provided with a heating device 5, which is arranged facing the coil end face of a coiling/uncoiling machine 1 coiling a rolled material 1a to a coil 2 and then uncoiling the coil 2 and has plural flat heating plates 6 arranged at the position corresponding to the coil diameter, a coil diameter detecting means 21 to detect the coil diameter and a control part 20 to conduct heating to the heating plates 6 at the position corresponding to the coil diameter detected based on the coil diameter detected by the coil diameter detecting means 21. The heating plates 6 are divided into groups corresponding to coil diameters, the control part 20 conducts heating based on a group unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil end face heating device for heating an end face of a coil wound with a rolled material during rolling.

[0002]

2. Description of the Related Art Conventional hot rolling equipment for rolling a thick plate (slab) to a thin plate (strip) in a single line requires a large number of rolling mills, so that the entire length of the rolling line becomes very long. In order to shorten such a rolling line, as shown in FIG. 5, the winding and rewinding machine 1 is disposed between the rough rolling mill 101 and the finishing rolling mill 102, and the slab is roughly rolled and wound into a coil. By rewinding and finish rolling,
The facility is being made more compact.

FIG. 6 shows an example of a winding and rewinding machine used in such a rolling facility. The winding and rewinding machine 1 includes a bending roll 1b for winding a rolled material 1a, and a cradle roll 1c for winding around a coil 2. A core is not required for winding, and rewinding is possible without a core, but a core may be used in some cases.

[0004] During winding or rewinding by the winding and rewinding machine 1, the coil end surface is easily cooled. Since the temperature distribution becomes non-uniform when the coil end face is cooled in this way, the coil end face is heated so as not to hinder the finish rolling. As a heating method, there are an electric heater method, an induction heating method, a gas burner method, and the like, and generally, a gas burner method is often used.

[0005]

The diameter of the coil becomes larger or smaller as the rolled material is wound and unwound by a winding and rewinding machine. For this reason, the surface area of the coil end face increases or decreases accordingly.However, conventionally, the surface area of the maximum diameter of the coil is heated, and when the coil diameter is small, the coil is heated to an unnecessary range and the energy is not increased. Had a loss.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a coil end surface heating device that heats a range corresponding to the coil diameter.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a coil is formed by winding a rolled material, and the coil is wound opposite to a coil end surface of a winding and rewinding machine that unwinds the coil. A heating device having a plurality of flat heating plates provided, a coil diameter detecting means for detecting the diameter of the coil, and a heating plate at a position corresponding to the coil diameter based on the coil diameter detected by the coil diameter detecting means. A control unit for performing a heating operation.

A plurality of heating plates are arranged at positions corresponding to the diameter of the coil. When a detected value of the coil diameter is obtained by the coil diameter detecting means, the control means causes the heating plate at a position corresponding to the coil diameter to perform a heating operation. Thus, it is possible to heat only the area where the coil exists, and it is possible to reduce the heating energy and perform effective heating.

According to the second aspect of the present invention, the heating plates are divided into groups corresponding to the diameters of the coils, and the control unit performs the heating operation of the heating plates in group units.

By dividing the heating plates into groups corresponding to the diameters of the coils, and by causing the control unit to perform the heating operation of the heating plates in units of the groups, the control can be performed easily and reliably.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a configuration of a coil end surface heating device according to an embodiment of the present invention. FIG. 2 is a front view of the coil end surface heating device shown in FIG.

In FIGS. 1 and 2, the winding and rewinding machine 1 comprises a bending roll 1b for winding a rolled material 1a and a cradle roll 1c for winding around a coil 2. An entry pinch roll 3 is provided on the entry side of the rolled material 1a, and an exit pinch roll 4 is provided on the exit side on which the rolled material 1a is unwound. A heating device 5 is provided opposite to both end surfaces of the coil 2, and a heating plate 6 in which a plurality of (six in FIG. 1) burners are arranged in a plane on the opposite surface is disposed at a position corresponding to the coil diameter. ing. Heating device support material 7
Are provided horizontally, and a plurality of wheels 8 are attached. The wheel 8 has a V-shaped groove, and a horizontal member 9 having two upper and lower rails fitted in the groove is provided. The heating device 5 moves along the horizontal member 9 in the axial direction of the coil 2. And
When the coil 2 is taken out or transferred, the coil 2 can be retracted.

A stabilizer 10 is provided on both end faces of the coil 2 in parallel with the heating device 5 on the entry side of the winding and rewinding machine 1, and guides the end face of the coil 2 so as to be wound on the same plane. The stabilizer 10 includes a guide plate 11 which is in contact with an end surface of the coil 2 and has the same end surface, a horizontally provided rod 12 for fixing the guide plate 11, and a rod receiver 13 which supports the rod 12 so as to be horizontally movable. The guide plate 11 can be moved in the axial direction of the coil 2 and can be retracted when the coil 2 is taken out or transferred.

FIG. 3 is a diagram showing the arrangement and grouping of the heating plates 6 of the heating device 5. The reason why the heating device 5 is divided into two branches is to insert a lifting bracket at the center of the coil 2 when the wound coil 2 is taken out or brought in from outside. C1 to C4 indicate the diameter of the coil 2,
When these diameters are reached, the burners of the heating plate 6 included in the diameters are ignited. The heating plate 6 indicated by number 1 is ignited until the coil diameter becomes C1, and the heating plate 6 indicated by number 2 is ignited when the coil diameter becomes C2.
Is ignited, and when it becomes C3, the heating plate 6 of No. 3 is ignited, and C4
Then, the heating plate 6 of No. 4 is ignited. Thereby, the heating plate 6 is divided into four groups of 1 to 4.

FIG. 4 shows a heating control system diagram. The coil diameter detecting means 21 is a device provided in the take-up and
Detect the diameter of The detection method is to count the number of rotations of the pinch roller from when the entry side pinch roller 3 shown in FIG. From the thickness of the rolled material 1a and the initial winding diameter unique to the winding and rewinding machine 1, the current winding diameter is obtained in real time by a computer. Note that another method, for example, a direct measurement method may be used without being limited to the present method.

Numbers 1 to 4 written on the heating plates 6 arranged on both sides of the coil 2 indicate the group numbers described in FIG. An electromagnetic valve 22 is provided in a pipe for sending a fuel gas or a premixed gas in which air is mixed with a fuel gas to the heating plate 6 of each group, and the control unit 20 determines that the coil diameter input from the coil diameter detecting means 21 is C1. When it comes to, the solenoid valve 22 of the group 1 is opened, when it comes to C2, the solenoid valve 22 of the group 2 is opened. Similarly, when it comes to C3, the solenoid valve 22 of the group 3 is opened. The valve 22 is opened. When rewinding the solenoid valve 22 in the reverse order
To close.

In the present embodiment, a burner is used as a heat source for the heating plate 6, but an electric heater or an induction heating device may be used. In this case, since the heating control for each group can be performed by the switch, it becomes easy.

[0018]

As is apparent from the above description, the present invention controls the heating range of the coil end face in accordance with the coil winding diameter, so that the coil end face can be heated without waste and the fuel gas or the like can be heated. The consumption of a heating source such as electricity can be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention.

FIG. 3 is a diagram showing the arrangement and grouping of heating plates.

FIG. 4 is a diagram showing a group control system of a heating plate.

FIG. 5 is a diagram showing a hot rolling facility using a winding and rewinding machine.

FIG. 6 is a diagram showing a configuration of a winding / unwinding machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Take-up unwinder 1a Rolled material 1b Bending roll 1c Cradle roll 2 Coil 3 Inlet pinch roller 4 Outlet pinch roller 5 Heating device 6 Heating plate 7 Heating device support material 8 Wheel 9 Horizontal material 10 Stabilizer 11 Guide plate 12 Rod DESCRIPTION OF SYMBOLS 13 Rod receiver 20 Control part 21 Coil diameter detection means 22 Solenoid valve

Claims (2)

[Claims] 1. A heating device having a plurality of flat heating plates provided to face a coil end surface of a winding and rewinding machine that winds a rolled material into a coil to unwind the coil, A coil comprising: a coil diameter detecting means for detecting a diameter; and a control unit for causing a heating plate at a position corresponding to the coil diameter to perform a heating operation based on the coil diameter detected by the coil diameter detecting means. Edge heating device. 2. The coil end surface heating device according to claim 1, wherein the heating plates are divided into groups corresponding to coil diameters, and the control unit performs a heating operation of the heating plates in group units.