JP2002001430A - Cradle roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cradle roll which can be packed without causing any flaw on a winding coil of the steel plate with or without being bounded by using a hoop. SOLUTION: The periphery of a roll body 1 is topped by the two modes so as to be changed; the first mode is the condition that an annular uneven section 3 for a hoop insertion is formed between shells by the shells 2 divided in the axial direction and the second mode is the condition that the surface becomes a successive surface by approximating shells 2, 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cradle roll that can be packed without causing flaws in a coil wound around a steel sheet, regardless of whether or not it is bound by a hoop.

[0002]

2. Description of the Related Art Conventionally, when storing and transporting articles such as a coil wound with a steel sheet, a synthetic resin packaging film (hereinafter, referred to as a stretchable film) having a stretchable outer surface for the purpose of protecting it from surrounding water and dust. Packaging with a stretch wrapping film) is widely and generally practiced. In this case, the steel sheet wound coil is packed while being rotated on a cradle roll. And, as shown in FIG. 5, when the steel plate wound coil 20 has a plate thickness of 0.5 mm or more, the outer periphery is warped due to the rigidity of the plate. When the hoop 21 comes into contact with the cradle roll 22, the surface pressure increases and a phenomenon occurs in which the flaw is generated on the coiled steel plate 20. Therefore, the cradle roll 22 is formed with an annular concave portion 23 for inserting the hoop. Is common.

On the other hand, in the case of a coil wound with a sheet thickness of less than 0.4 mm, the tail end of the steel sheet is adhered with an adhesive tape or the like without using the above-mentioned binding hoop because there is no warpage of the outer periphery. They are united. For this reason, when this coil is rotated on a cradle roll having an annular concave portion for inserting a hoop, there is a problem in that the rigidity of the plate is low and drawing flaws are generated starting from the annular concave portion. Therefore, when packing a steel coil wound with a sheet thickness of less than 0.4 mm, it is necessary to replace the cradle roll with a special one without an annular recess, and it is necessary to prepare a special roll part while reducing work efficiency. There was a problem that the cost was high.

Therefore, for example, Japanese Patent Application Laid-Open No. Hei 10-236425
As disclosed in Japanese Patent Application Laid-Open Publication No. H11-209, a cradle roll has been proposed in which an annular concave portion for inserting a hoop can be formed by moving a segment up and down. However, in this case, since the segment is configured to move up and down by compressed air, it is difficult to maintain a perfect perfect circle for a heavy steel coil and it is not possible to ensure smooth rotation. There was a point.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and can be applied to either a steel coil wound with a hoop or a steel coil wound without using a hoop. The present invention has been completed for the purpose of providing a cradle roll that can be used even in any case and can be packed without generating a flaw in the coil wound with a steel sheet.

[0006]

In order to solve the above-mentioned problems, a cradle roll according to the present invention has an outer periphery of a roll body formed by an axially divided shell and having an annular shape for intervening a hoop therebetween. It is characterized in that it is covered so that it can be switched between a state in which a concave portion is formed and a state in which the surfaces are continuous by bringing the shells close to each other. Further, the switching to the two modes of the state in which the annular concave portion for hoop intervention is formed between the shells as described above and the state in which the shells are brought close to each other and the surface is a continuous surface is performed by operating the air cylinder. It is preferable that this is performed, and this is the invention according to claim 2.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows a plate thickness of 0.5 mm
This shows a case where the above-mentioned cylindrical steel sheet wound coil W is packed with a stretch wrapping film, and the outer circumference of the steel sheet wound coil W is bound by a single metal band hoop 10. . In the drawing, reference numeral 1 denotes a roll main body of a cradle roll. The roll main body 1 is covered with shells 2 and 2 whose outer periphery is divided into two in an axial direction.
The shells 2 and 2 are in a state in which an annular concave portion 3 for hoop intervention is formed between the shells (see FIG. 1).
The shell 2 can be moved in the axial direction so that the two can be switched to two modes in a state where the two are brought close to each other and the surface is a continuous surface (see FIG. 2), and any of the two modes described above can be selected. is there.

As means for moving the shells 2 and 2 in the axial direction, an opening / closing mechanism using air cylinders 4 arranged on both sides of the roll body 1 is employed in the drawing.
The operation is performed by the operation of the air cylinder 4. That is, an engagement claw 4a is attached to the rod end of each air cylinder 4, and this engagement claw 4a is
The shell 2 is configured to be movable in the axial direction of the roll body 1 by the operation of the air cylinder 4. Further, such an opening and closing mechanism is attached to each of the shells 2 and 2, and in the illustrated one, the shells 2 and 2 are slidably moved to both outsides around the hoop 10 of the steel sheet winding coil W. However, when the shell is of the split type, if one hoop is specified, only one of the shells 2 may be moved.

On the other hand, FIG. 2 shows a state in which the shells 2 and 2 are closed. In this case, the shells 2 and 2 are completely adhered to each other at the divided portions to form a smooth continuous surface. In this way, the state is kept in close contact with the steel sheet wound coil W without forming a gap.

In the above-mentioned construction, the outer periphery of the roll body 1 is divided in the axial direction and is covered with the shells 2 and 2 movable in the axial direction. The thickness of the plate is 0.5 mm because two modes can be selected: a state in which the annular concave portion 3 for intervention of the hoop is formed, and a state in which the shells 2 and 2 are brought close to each other to form a smooth continuous surface. When packing the steel coil W wound around the metal band hoop 10 in the above manner, as shown in FIG. Since the hoop 10 is positioned in the annular recess 3 for intervention and the hoop 10 is aligned with the annular recess 3, the steel plate winding coil W is rotated.
This can completely prevent the occurrence of the pressing flaw due to the contact with the metal.

On the other hand, without using a binding hoop, the tail end of the steel plate is stuck with an adhesive tape 11 or the like, and the plate thickness is 0.4 mm.
As shown in FIG. 2, when packing a steel coil wound with less than two steel plates, the shells 2 and 2 are brought close to each other by the air cylinder 4 so that the surfaces of the two shells 2 and 2 become smooth continuous surfaces. In this state, the steel sheet winding coil W is rotated, so that the steel sheet winding coil W does not generate drawing flaws starting from the hoop insertion recess as in the related art, and the quality is deteriorated. Disappears.

Thus, the cradle roll of the present invention
For the steel plate wound coil W bound by the hoop 10, the steel plate wound coil W bound without using the hoop 10
Can also be used for
It is possible to provide an inexpensive facility with a simple structure, a small installation space, and an inexpensive facility in which the operation of switching the usage mode is easily performed by the air cylinder 4. In the above description, the case where one hoop 10 is used is described. Therefore, the shell is divided into two, but the case where two or more hoops 10 are used for the steel sheet wound coil W is used. In this case, the shell 2 divided according to the number of hoops may be used.

[0013]

As is clear from the above description, the present invention can be used for any of a steel coil wound with a hoop and a steel coil wound without a hoop. In any case, the coil can be packed without causing any flaws in the coil wound with the steel sheet. Therefore, the present invention is extremely important in contributing to industrial development as a cradle roll that has eliminated the conventional problems.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing a case where a hoop is not used.

FIG. 3 is a perspective view showing an embodiment of the present invention.

FIG. 4 is a perspective view showing a case where a hoop is not used.

5A and 5B are a front view and a side view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roll body 2 Shell 3 Annular concave part 4 Air cylinder

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Seiji Yamamoto 52-5 Marune, Arao-cho, Tokai-shi, Aichi Prefecture Taihei Kogyo Co., Ltd. Tokai branch F-term (reference) 3E028 AB02 BB05 DA00 HA02 4E026 DB07 DB08

Claims (2)

[Claims] An outer periphery of a roll body is divided into shells in an axial direction to form annular recesses for intervention of a hoop, and the shells are brought close to each other to form a continuous surface. A cradle roll covered so that the state can be switched between two modes. 2. An air cylinder is operated to switch between a state in which an annular concave portion for intervention of a hoop is formed between the shells and a state in which the shells are brought close to each other to form a continuous surface. 2. The cradle roll according to claim 1, wherein the cradle roll is adapted to be closed.