JPH09225518A - Coil end face heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer a coil to final position while uncoiling a coil, heat the end face of coil at the final position where a coil positions during transferring/ finish rolling and to easily take out a defective coil. SOLUTION: In a device arranged with a coiling mechanism to coil a hot rolled stock in coiled shape/coreless and a transfer means 30, in which mandrels 31 are respectively inserted in the hollow hole of a coreless coil 2 from both end faces and the coil is transferred toward downstream side by oscillating the mandrel 31, the device has flat plate shaped heater panels 11, which has hollow hole for passing through of mandrel and face coil end face for heating, and heater moving devices 12, which face both end faces of the coil 2 and move the heater panel 11 in the coil width direction, the transfer means 30 are arranged with lateral moving parts 32 to insert the mandrels 31 to the hollow hole of coil 2 and oscillating parts 33 to oscillate the lateral moving parts 32 to transfer toward downstream side, heater moving devices 12 are mounted to the lateral moving part 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end face holding and heating device for a coil formed by winding a rolled material in a hot rolling facility.

[0002]

2. Description of the Related Art A conventional hot rolling line is, as schematically shown in FIG. 3A, rolled into a sheet bar having a thickness of 30 to 50 mm by a rough rolling mill, and then further rolled by a finish rolling mill.
It had been rolled into strips of ~ 16 mm thickness. In this case, the speed on the delivery side of the finishing rolling mill is limited due to mechanical restrictions, and as a result, the entry side rolling speed of the finishing rolling mill is further reduced to the approximate delivery side rolling speed x (delivery side sheet thickness ÷ entry side sheet thickness). Since the rolling time is limited to several minutes, and because it does not match the speed of the rough rolling mill exit side, the rolling material on the rough rolling mill exit side was waiting in sheet form, so the temperature drop of the sheet bar was severe, In particular, the trailing edge portion had a problem in quality because the rolling load increased due to the temperature drop.

As a method for solving this problem, as shown in FIG. 3B, there is disclosed a method in which a bar after rough rolling is wound into a coil, and finish rolling is performed while rewinding the bar from the rear end of the bar. By this method, cooling of the entire bar is prevented, and finish rolling is performed from the rear end in rough rolling, so that the temperature difference in the entire bar can be made substantially the same.

However, in the case of FIG. 3B, when the temperature distribution in the width direction of the bar is focused on, the coil end portion is more likely to cool than the center portion of the width, so that there is a problem in making the temperature distribution in the width direction uniform. It was Therefore, in order to solve this problem, a method of transferring the coil while keeping it warm with a heat shield panel A method of heating the end face of the coil (Japanese Patent Laid-Open No. 7-51726)
No.) etc. have been proposed.

Further, in the above item, in order to improve the productivity of the hot rolling equipment, as shown in FIG. 4 (A), a plurality of coils are sequentially conveyed downstream between the rough rolling mill and the finish rolling mill. However, a method of rewinding and finishing rolling at the final conveyance position has also been proposed.

[0006]

However, in the heat shield panel means, since the entire end surface of the coil is kept warm by the plate-shaped heat shield panel, a special transfer mechanism is required when the coil is transferred. was there. That is, as shown in FIG. 4B, this carrying mechanism is composed of a plurality of swing frames each having a pair of rollers, and the coil is rolled by the tilting of the swing frames to carry. Therefore, there are problems that the coil cannot be rewound to the final position while being rewound, and if the coil diameter is different, the coil cannot be transported smoothly and the outer surface of the coil is easily scratched.

On the other hand, conventionally, there has been adopted a carrying means for inserting a mandrel into the hollow hole of the coreless coil and swinging the mandrel to carry it to the downstream side. This mandrel-based transport means has the excellent features that it can transport the coil to the final position while rewinding it, and that it can be transported smoothly even if the coil diameter is different, and that the outer surface of the coil is not scratched. However, if this transport means is applied to the heat shield panel, the heat shield panel needs to be largely cut out, the effective area of the heat shield panel is significantly reduced, and sufficient heat shield (heat shield) can be achieved. There was a problem that disappeared.

On the other hand, in the means of Japanese Patent Laid-Open No. 7-51726, since the rewinding is performed at the winding position, it is impossible to handle a plurality of coils at the same time as shown in FIG. Even if this occurs, there is a problem in that it is difficult to take out the defective coil due to interference with burners located at both ends.

The present invention has been made in order to solve such a problem. That is, an object of the present invention is to convey a plurality of coils sequentially to the downstream side, and to rewind and finish-roll the coils at the final position, so that the coil can be conveyed to the final position while being rewound. It is an object of the present invention to provide a coil end face holding / heating device capable of heating the end face of a coil at the final position where the coil is located during rolling and easily taking out a defective coil.

[0010]

According to the present invention, a winding mechanism for winding a hot-rolled material into a coil without a core, and a mandrel inserted into the hollow hole of the coreless coil from both end surfaces of the coil, respectively. In a device provided with a transport means for swinging and transporting the mandrel to a downstream side, a flat plate-shaped heater panel having a hollow hole for mandrel penetration at the center to heat the coil facing the end face of the coil, and the heater panel Has a heater moving device that moves the coil in the coil width direction so as to face both end faces of the coil, and the conveying means includes a lateral moving part for inserting the mandrel into the hollow hole of the coil and a wobbling of the lateral moving part. The heater moving device is attached to the lateral moving unit.

According to the above-described structure of the present invention, the mandrel is inserted into the hollow hole of the coreless coil by the lateral moving portion, and then the heater panel is moved to both end faces of the coil by the heater moving device to heat the end face of the coil. Keep warm. Next, while the coil is being rewound while maintaining the heating and the heat retention, the mandrel is swung by the swinging unit and conveyed to the downstream side. In this way, the coil can be conveyed to the final position while being rewound, and heating and heat retention of the coil end surface can be continued at the final position where the coil is positioned during finish rolling. Further, since the heater panel moves to both sides in the width direction of the coil like the mandrel, when the defective coil is taken out, the heater panel can be retracted and swung by the swing mechanism to secure a maintenance space at both ends of the coil. A defective coil can be easily taken out by inserting a C hook or the like.

According to a preferred embodiment of the present invention, the lateral moving portion has a hollow cylindrical sleeve for movably supporting the mandrel in the coil width direction, and the heater moving device is attached to the sleeve. Therefore, the heater panel can be moved in parallel with the mandrel in the coil width direction and from both sides of the coil so that both end faces of the coil are heated, and the heater panel can be retracted after heating.

Further, the heater panel is provided with a flame heating burner, a radiant heating burner, or an electric heating burner so that the end surface of the coil can be efficiently heated.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, common parts are denoted by the same reference numerals. FIG. 1 is a diagram schematically showing a relationship between a winding mechanism for winding a rolled material, a conveying means for conveying a wound coil, and a conveying operation. 2A is a sectional view taken along the line XX of FIG. 1 and shows the structure of the coil end face heating device and the conveying means of the present invention. FIG. 2B is a sectional view taken along the line YY of FIG. The ZZ cross section of A) is shown.

In FIG. 1, a winding mechanism 20 includes three bending rolls 21 that give a curl to the tip of the rolled material 1, and a guide roll 2 that guides the rolled material 1 to be wound into a coil.
2. The rolled coil 1 is provided with a peeler arm 23 for reversing and peeling the rear end thereof, and the like, the rolled material 1 is wound around the coil 2 without a core, and the rolled material 1 is reversely wound and finished from the rear end. It can be rewound to the rolling mill side (right side in this figure). The transport means 30 is the coreless coil 2
A lateral movement part 32 for inserting the mandrel 31 into the hollow hole of
The lateral moving section 32 is composed of a swinging section 33 that swings and moves to the finish rolling mill side. The winding mechanism 20 shown by the solid line
The coil 2 wound up by is moved to the winding mechanism 20 indicated by a chain double-dashed line by the conveying means 30, and the rolled material 1 is unwound from the coil 2 and sent to the finishing rolling mill side. The heating of the coil end surface is continuously performed at the position of the winding mechanism 20 shown by the solid line, while oscillating and moving, and at the position of the winding mechanism 20 shown by the two-dot chain line.

In FIG. 2, the conveying means 30 comprises a mandrel 31 which is inserted into the hollow hole of the coreless coil 2 and a sleeve which fits into the mandrel 31.
1 is inserted into the coil 2 and includes a lateral moving part 32 having a driving part (not shown), and a oscillating part 33 that oscillates by attaching the lateral moving part 32 to the tip thereof.
Are symmetrically provided with the coil 2 sandwiched between them. The mandrel 31 is inserted into the hollow hole of the coil 2 from the left and right, and the coil 2 is swung as described in FIG. By this swing, the coreless coil 2 can be sequentially transported from the upstream side to the downstream side. Further, in this carrying means 30, the final position 1
In front of this (the position of the winding mechanism 20 shown by the solid line in FIG. 1), the rear end of the coil 2 is peeled off by the peeler arm 23 to start rewinding and the mandrel 31.
The coil 2 can be conveyed to the final position by swinging. Further, the carrying means 31 is characterized in that the carrying can be carried smoothly even if the coil diameter is different, and the outer surface of the coil is not scratched.

Coil end face heating device 10 according to the present invention
As shown in FIG. 2, is composed of a heater panel 11 and a heater moving device 12. The heater panel 11 has a disk shape matching the shape of the coil 2, and a hollow hole 11a through which the mandrel 31 can penetrate is provided at the center, and a plurality of burner panels 11b (16 sets in this figure) are provided in the hollow disk portion. Installed. Each burner panel 11b incorporates a plurality of flame burners (in this figure, three inside, five outside), burns fuel such as natural gas, and radiates heat of the flame and the panel so that the end surface of the coil 2 is desired. It is designed to be heated to a temperature (for example, about 1000 ° C.). In addition,
The present invention is not limited to such a configuration, and instead of a flame heating burner, a radiant heating burner that burns fuel on a flat plate-shaped porous heating surface and heats it with radiant heat, or an electric heating burner that uses resistance heating by electricity. You may apply.

The heater moving device 12 includes a heater panel 11
Has a support member 13 for supporting a coil. The support member 13 has a shape obtained by dividing a cylinder in half and its axial direction is arranged parallel to the axial direction of the mandrel 31, and the heater panel 11 faces the coil end surface at the coil 2 side end. And a semicircular end plate 14 is attached to the other end. The inner surface of the support member 13 is shown in FIG.
As shown in (B), passing through the axis of the cylinder,
The wheel support 15 extending in the axial direction of the mandrel 31 is attached on the cylinder radius of 90 °, 135 °, 135 °,
A wheel 16 that moves on the sleeve of the lateral movement portion 32 is rotatably attached to the cylindrical axis side of the wheel support member 15. A guide 17 is fixed to the sleeve of the lateral movement portion 32 so that the wheel 16 moves in the axial direction of the mandrel 31. A hydraulic cylinder 18 is attached to the side surface of the sleeve so that the moving direction of the rod 18a is parallel to the mandrel 31, and the tip of the rod 18a is attached to the end plate 14.

With such a structure, the hydraulic cylinder 18 is operated to make the heater panel 11 face the coil end surface so that the heater panel 11 approaches and retracts to the coil end surface. As a result, the heater panel 11 may be brought close to the coil end surface only when heating,
When a defective coil occurs, the defective coil can be easily discharged by retracting it from the coil end surface. Further, as shown in FIG. 1, heating of the coil end face is continuously performed without any trouble at the position of the winding mechanism 20 shown by the solid line, while swinging and moving, and at the position of the winding mechanism 20 shown by the chain double-dashed line. be able to.

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.

[0021]

As described above, the coil end face keeping heating device of the present invention is a device for sequentially conveying a plurality of coils to the downstream side, rewinding the coils at the final position and finishing rolling, while rewinding the coils. It has an excellent effect that the end face of the coil can be heated and the defective coil can be easily taken out at the final position where the coil is positioned during the transportation to the final position and during the finish rolling.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a relationship between a winding mechanism that winds a rolled material, a conveying unit that conveys a wound coil, and a conveying operation.

2A is a sectional view taken along line XX of FIG. 1 and shows the structure of a coil end surface heating device and a conveying means of the present invention, FIG. 2B is a sectional view taken along line YY of FIG. 2A, and FIG. The ZZ cross section of (A) is shown.

FIG. 3 is an explanatory diagram of a conventional hot rolling facility.

FIG. 4 is another explanatory view of the conventional hot rolling equipment.

[Explanation of symbols]

 1 Rolled material 2 Coil 10 Coil end face heating device 11 Heater panel 11a Hollow hole 11b Burner panel 12 Heater moving device 13 Support material 14 End plate 15 Wheel support material 16 Wheel 17 Guide 18 Hydraulic cylinder 18a Rod 19 Heater retractor 20 Winding Taking mechanism 21 Bending roll 22 Guide roll 23 Peeler arm 30 Conveying means 31 Mandrel 32 Lateral moving part 33 Swinging part

Claims (3)

[Claims] 1. A winding mechanism for winding a hot-rolled material into a coil shape without a core, and mandrels are inserted into the hollow holes of the coreless coil from both end surfaces of the coil, and the mandrel is swung to downstream side. A flat plate-shaped heater panel having a hollow hole for mandrel penetration at the center to heat the coil end face, and the heater panel facing both end faces of the coil. And a heater moving device for moving in the width direction, wherein the carrying means has a lateral moving part for inserting the mandrel into the hollow hole of the coil, and a rocking device for rocking the lateral moving part to carry it to the downstream side. And a heater moving device attached to the lateral moving part. 2. The lateral moving part has a hollow cylindrical sleeve that supports the mandrel so as to be movable in the coil width direction, and the heater moving device is attached to the sleeve. The coil end face keeping heating device according to claim 1. 3. The heater panel is a flame heating burner,
The coil end face keeping heating device according to claim 1, further comprising a radiant heating burner or an electric heating burner.