JPH0596317A - Method for retaining temperature of coil - Google Patents

Abstract

PURPOSE:To wholly heat-retain coils and to prevent local dropping of temperature by covering each of them with a heat-retaining cover as they are arranged in series and horizontally and rotating each coil round its axis. CONSTITUTION:Each of plural hot coils C wound by a coiler is mounted continuously on a carrier 2. As carriers 2 are approached to each other, or, as the rear faces C1, Cb in the axial direction of the coil C are apprached to each other, supporting rollers are rotated by an actuator of each carrier 2 at a prescribed speed to rotate each hot coil. Then, each carrier 2 is moved by a puller and pusher on the guide rail 3 in a heat-retaining cover 4 to carry each hot coil C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat retaining method for a plurality of coils formed by winding a strip, and more particularly to moving hot coils between equipments of a hot strip rolling line or between equipments of thin wall continuous casting equipment. The present invention relates to a coil heat retaining method suitable for use in an apparatus.

[0002]

2. Description of the Related Art Conventionally, for example, various structures have been proposed for preventing a temperature drop of each coil when moving a plurality of hot coils formed by winding a strip between respective facilities of a hot strip rolling line. Has been done.

In Japanese Patent Laid-Open No. 61-60829, the hot coils are supported in a state of being horizontally arranged in series so that the axial end faces of the hot coils closely face and oppose each other, and the outer peripheral surface is covered with a heat-retaining cover to convey A method of doing so is disclosed. According to this method, the adjacent heated hot coils heat-retain their axial end surfaces to each other, and the outer peripheral surface of each coil is heat-retained by the heat-retaining cover, so that the strip is simply wound in a heated state. It is possible to prevent the temperature of the hot coil, particularly in the vicinity of the end face and the outer peripheral face in the axial direction, from being locally reduced compared with the case where the hot coil is conveyed while being cooled.

[0004]

However, according to the above-mentioned method, when the adjacent coils have different coil diameters, the axial end faces of the large-diameter coils are partially exposed, and the temperature of this exposed portion is increased. There is a problem that not only the temperature lowers earlier than the other portions, but also the temperature of the contact portion of the coil with the supporting member lowers earlier because the temperature of the coil supporting member is relatively low. This also applies to, for example, thin wall continuous casting equipment.

The present invention has been made in view of the problems of the prior art as described above, and its main purpose is to maintain the heat of the coil as a whole and prevent the local temperature drop. To provide a heat retention method.

[0006]

According to the present invention, there is provided a heat retaining method for a plurality of coils formed by winding a strip, wherein the coils are adjacent to each other in the axial direction. Heat retention of the coil characterized in that the supports are arranged horizontally on the same plane so as to face each other in close proximity and are horizontally arranged in series and covered with a heat retention cover to rotate the coils around their axes. This is accomplished by providing a method.

[0007]

According to the above construction, even if the diameters of the adjacent coils are different from each other, by rotating the coils, their axial end faces periodically oppose each other and the outer peripheral faces of the coils are uniformly supported. Contact a member.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic structure of a moving device 1 for moving a plurality of hot coils C formed by winding a strip between respective facilities in a hot strip rolling line to which the present invention is applied. It is a side sectional view.

The moving device 1 is laid on a plurality of carriers 2 for carrying a hot coil C formed by winding a strip in a heated state by a coiler (not shown) and a moving path of the carriers 2, and guides the carriers 2. And a heat retaining cover 4 that covers each hot coil C, the carrier 2 and the guide rail 3 in the moving path of the carrier 2 over the entire moving path.

As shown in FIG. 2 together, the carrier 2 is
A base 5 movably supported by wheels 6 on a guide rail 3, a pair of support rollers 7 and 8 pivotally supported in a symmetrical position with respect to the base 5, and one support roller 7 are rotationally driven. And an actuator 9 for Here, the rotation axes of the support rollers 7 and 8 extend in the extending direction of the guide rail 3, that is, the moving direction of the carrier 2. The hot coil C is sandwiched between the support rollers 7 and 8 so that the axial direction thereof coincides with the directions of the rotation axes of the support rollers 7 and 8. Therefore, the hot coil C is rotatably supported by both supporting rollers 7 and 8 so that the lower surface thereof is located on substantially the same plane.

By sandwiching the hot coil C between the pair of left and right support rollers 7 and 8 as in the present embodiment, the hot coil C of any diameter can be adjusted in its supporting position regardless of the coil diameter. Can be supported without doing.

Next, the operating procedure of this embodiment will be described with reference to FIGS.

First, a plurality of hot coils C wound by the above-mentioned coiler are continuously mounted on the carrier 2, respectively. Then, the support roller 7 is rotated at a predetermined speed by the actuator 9 of each carrier 2 in a state where each carrier 2 is in close proximity, that is, in a state in which the axial end faces Ct and Cb of each hot coil C are in close proximity to each other. Each hot coil C is rotated by. Next, each carrier 2 is moved on the guide rail 3 in the heat insulating cover 4 by a puller and a pusher (not shown), and each hot coil C is transported. Here, as shown in FIG. 2, when the large-diameter hot coil Cl is adjacent to the small-diameter hot coil Cs,
Although the upper end surface of the hot coil Cl is exposed, since each hot coil C is rotating, a part of the end surface does not remain exposed, and local temperature decrease of the end surface can be prevented. it can. Further, since the portions contacting both the supporting rollers 7 and 8 are always moved, a part of the peripheral surface does not remain in contact, and it is possible to prevent a local temperature decrease on the peripheral surface.

Actually, by providing a heater or the like on both supporting rollers 7 and 8 or providing a heat insulating material on the surface of both supporting rollers 7 and 8, a further local temperature decrease on the peripheral surface of the hot coil C can be prevented. be able to.

[0016]

As is apparent from the above description, according to the coil heat retaining method of the present invention, the coils are substantially flush with each other so that the end faces in the axial direction of the coils adjacent to each other closely face each other. Even if the diameters of adjacent coils differ from each other, the end faces in the axial direction are covered by the heat-retaining cover in a state where the supports arranged above are arranged horizontally in series and each coil is rotated about its axis. Since the coils are periodically opposed to each other and the outer peripheral surface of the coil uniformly contacts the supporting member, the coil can be kept as a whole and a local temperature decrease can be prevented. From the above, the effect of the present invention is great.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a schematic configuration of a hot coil moving device in a hot strip rolling line to which the present invention is applied.

2 is a cross-sectional view taken along the line II-II of FIG.

[Explanation of symbols]

 1 Coil moving device 2 Carrier 3 Guide rail 4 Heat retaining cover 5 Base 6 Wheels 7 and 8 Support roller 9 Actuator C, Cs Hot coil Ct, Cb Axial end face

Claims (1)

[Claims] 1. A heat retaining method for a plurality of coils formed by winding a strip, wherein each coil is arranged on substantially the same plane so that axial end faces of adjacent coils face each other in close proximity to each other. A method for heat retention of a coil, wherein the support is horizontally arranged in series and covered with a heat retention cover, and each of the coils is rotated about its axis.