JPH069816U - Split shear for multi-roll rolling - Google Patents

Abstract

(57) [Summary] [Purpose] Even if the number of strands is 3 or more, the rolled material is guided to the exit guide without expanding the inviting dimension of the exit guide. [Structure] Blade holders 4 and 5 equipped with cutter blades 8 and 9 are fixed to the end portions of drive shafts 2 and 3 that are rotatably supported in parallel with each other in parallel with the shear body 1, and an inlet guide 6 and A split shear for multi-roll rolling provided with an outlet guide 7. The holders 4 and 5 are provided with guide members 10 and 11 on the side opposite to the blades 8 and 9 for standby for cutting, and guide members 12 and 13 on the rear side in the rotation direction of the blades 8 and 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a split shear that cuts a rolled material to be a product into a predetermined size in a multi-roll rolling facility such as a steel bar.

[0002]

[Prior art]

 In general, the material rolled by the mill line is made into a product by a finishing rolling mill and is carried into the cooling floor. This cooling floor is usually about 60 to 100 m long, and when rolling material is loaded into it, a split shear installed on the rear surface of the finishing rolling mill cuts it to a transportable length and takes it in sequentially. ing.

In the reinforcing bar rolling equipment, slit rolling is generally adopted in order to increase the production amount of fine rolling (diameter: 10 to 16 mm). In this slit rolling, since the material is divided into two in the longitudinal direction during rolling, two materials are rolled at the same time by the finish rolling mill, and two rolled materials are cut at the same time by the splitting shear. As a market trend, three-strand and four-strand rolling are being aimed at in order to increase the production of fine products.

Conventionally, as this type of divided shear, as illustrated in FIG. 6 and FIG. 7, a rolled material B is provided at the end of a drive shaft 20 which is rotatably supported in parallel to the shear body. It is known that a blade holder 22 having a cutter blade 21 for cutting a blade is fixed, and an inlet guide 23 and an outlet guide (also referred to as a receiving trough) 24 are arranged orthogonally to the drive shaft 20. .

The distance between the ends of the inlet guide 23 and the outlet guide 24 is set to about 400 mm at the center of the shear so that the cutter blade 21 does not interfere. As described above, since the shear center portion is not provided with the rolled material guiding means, the intake dimension W of the outlet guide 24 is increased as shown in FIG.

[0006]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional technique, in the case of two-strand rolling, the horizontal drawing dimension W can be increased as shown in FIG. 7, but in the case of three-strand rolling or more, the drawing dimension W can be increased as shown in FIG. Then, there arises a problem that the width of the cutter blade 21 must be increased and the strand interval must be increased. On the other hand, unless a sufficient inviting dimension is taken, there arises a problem that the tip of the rolled material that has passed through the center of the shear cannot be reliably guided to the outlet guide 24 due to lateral movement or the like. In any case, it was difficult to achieve with 3 or more strands.

The present invention has been made in view of the above situation, and an object of the present invention is to reliably perform rolling without expanding the inviting dimension of the outlet guide even when rolling 3 strands or more. It is to provide a split shear for multi-roll rolling that can guide the material.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention takes the following technical means. That is, according to the present invention, a blade holder equipped with a cutter blade for cutting a rolled material is fixed to the end of a drive shaft that is rotatably supported in parallel with each other in the shear body, and is orthogonal to the drive shaft. In the split shear for multi-roll rolling in which the inlet and outlet guides are arranged in a circular pattern, at least one of the upper and lower blade holders is equipped with a guide member for guiding the rolled material during standby for cutting. There is.

Further, according to the present invention, a blade holder provided with a cutter blade for cutting a rolled material is fixed to a drive shaft that is rotatably supported in parallel with each other in a shear body, and is orthogonal to the drive shaft. In a split shear for multi-roll rolling in which an inlet and an outlet guide are provided, a rolled material guide member is provided on the rear side in the rotational direction of at least one of the upper and lower blade holders.

[0010]

[Action]

 According to the present invention, since the guide member is located between the inlet guide and the outlet guide while the split shear is on standby, the lateral (horizontal) deviation of the rolled material is restrained and the rolled material is straightened. Can be induced. In addition, the guide member on the rear side in the rotation direction of the blade holder guides the leading end of the rolled material immediately after cutting and guides it straight to the exit guide.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the present invention, in which 1 is a divided shear main body, and the main body 1 has drive shafts 2 and 3 which are rotated in opposite directions by an internal drive mechanism (not shown). Blade holders 4 and 5 are fixed to the ends of the drive shafts 2 and 3 extending from the main body 1 so as to be parallel to each other in the vertical direction and horizontally. An inlet guide 6 and an outlet guide 7 are arranged so as to be directly intersected with 2,3.

Cutter blades 8 and 9 are attached to the blade holders 4 and 9 in a replaceable manner, and plate-shaped two-piece pair guide members 10 and 11 are fixed to the opposite sides of the blades 8 and 9. Two plate-shaped guide members 12, 13 are fixed to the rear side of the blades 8, 9 in the rotation direction, and the guide members 10, 11, 12, 13 of the upper and lower holders 4, 5 interfere with each other. In addition, the ends are made as close as possible so as to surely guide the rolled material B in a pair with the upper and lower sides and to advance it straight.

As shown in FIG. 3, the guide members 10 and 11 are obliquely attached so that the inlet side is wider than the outlet side so that the rolled material B can be surely guided to the outlet guide 7. is there. The other guide members 12 and 13 can also be attached diagonally as shown in FIG. Further, the inlet guide 6 and the outlet guide 7 do not need to have a particularly large introductory dimension, and can have the same dimensions as in the two-strand rolling.

According to the above-described embodiment, while waiting for the cutting of the rolled material B, as shown in FIGS. 1 to 4, the guide members 10 and 11 of the upper and lower blade holders 4 and 5 pass through the passage portion of the rolled material B. Since they are located on both sides, as shown in FIG. 4, not only the tip of the rolled material B but also the lateral deviation of the rolled material B is constrained to carry out the linear traveling conveyance, so that the rolled material B is surely guided to the exit guide 7. You can induce.

When the rolled material B is cut, as shown in FIG. 5, since the guide members 12 and 13 are located on both sides of the rolled material B 1, the leading end of the succeeding rolled material B immediately after cutting is It is restrained by the members 12 and 13 and goes straight, and is surely introduced into the outlet guide 7. Even in this case, sideways movement is restricted as shown in FIG. Although FIG. 5 is a drawing in which one of the guide members 10 and 11 is omitted, the guide member 10 and 11 are not actually provided, and the rolled material B is guided only at the time of cutting and immediately thereafter. By doing so, most purposes can be achieved.

The present invention is not limited to the above-described embodiment. For example, both guide members 10, 11, 12, 13 are provided only on the upper or lower blade holders 4, 5 and are made slightly larger. The same effect can be expected. Also, the shape and the like can be changed as appropriate.

[0017]

[Effect of device]

 According to the present invention, as described above, a blade holder provided with a cutter blade for cutting a rolled material is fixed to a drive shaft that is rotatably supported in parallel with each other in the shear body, and is orthogonal to the drive shaft. In a split shear for multi-roll rolling in which an inlet guide and an outlet guide are arranged, at least one of the upper and lower blade holders is provided with a guide member for guiding the rolled material during standby for cutting. Therefore, even if the inlet width of the outlet guide is small, the rolled material can be reliably guided to the outlet guide, and there is no need to widen the strand interval and blade width.

Further, according to the present invention, a blade holder provided with a cutter blade for cutting a rolled material is fixed to a drive shaft that is rotatably supported in parallel with each other in a shear body, and is orthogonal to the drive shaft. In a split shear for multi-roll rolling in which an inlet and an outlet guide are provided at the rear, a rolled material guide member is provided at the rear side in the rotational direction of at least one of the upper and lower blade holders. Therefore, it is possible to surely guide the tip of the rolled material immediately after cutting, and prevent troubles due to poor delivery to the exit guide.

[Brief description of drawings]

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

FIG. 2 is an enlarged front view of a main part of FIG.

FIG. 3 is a partially enlarged plan view showing a positional relationship between an outlet guide and a guide member.

FIG. 4 is a view taken along the line AA of FIG.

FIG. 5 is an operation explanatory view with a part omitted.

FIG. 6 is a schematic front view of a conventional example.

FIG. 7 is a plan view of a two-strand outlet guide.

FIG. 8 is a plan view of a three-strand outlet guide.

[Explanation of symbols]

 1 Shear body 2,3 Drive shaft 4,5 Blade holder 6 Inlet guide 7 Outlet guide 8,9 Cutter blade 10,11 Guide member 12,13 Guide member

Claims (2)

[Scope of utility model registration request] 1. A blade holder provided with a cutter blade for cutting a rolled material is fixed to a drive shaft that is rotatably supported in parallel with each other in a shear body, and an inlet and an outlet are orthogonal to the drive shaft. In a split shear for multi-roll rolling provided with a guide, at least one of the upper and lower blade holders is provided with a guide member for guiding a rolled material during standby for cutting, and the split shear for multi-roll rolling is characterized. . 2. A blade holder provided with a cutter blade for cutting a rolled material is fixed to a drive shaft that is rotatably supported in parallel with each other in a shear main body, and an inlet and an outlet are orthogonal to the drive shaft. In a split shear for multi-roll rolling provided with a guide, a rolling material guide member is provided on the rear side of at least one of the upper and lower blade holders in the rotational direction, and the split shear for multi-roll rolling is characterized. .