JPS6327930Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a front and rear table attached to a so-called cold shear machine used for cutting steel bars, long steel, etc. to a fixed length.

As is known, steel bars, long steel bars, etc. produced by a rolling mill are cut into product double-sized pieces, cooled in a cooling bed, and then cut into predetermined product lengths and shipped as products.

By the way, this type of conventional fixed length cutting equipment, as schematically illustrated in FIG. It is equipped with a tilting roller table 3 and a sizing machine 4 installed directly above the tilting roller table 3 so as to be movable in the pass line direction. The lower blade 5 is installed so that the upper surface of the lower blade 5 forms the same horizontal plane.

Therefore, to explain the fixed length cutting process using the above fixed length cutting equipment, first, the sizing machine 4 is moved so that the front surface of the stopper 6 is located at the fixed sizing position according to the desired product length, and then fixed. Next, a plurality of materials W to be cut are arranged in parallel and fed through the roller table 2 for carrying in, and in a state where the tips of all the materials W are stopped in contact with the front surface of the stopper 6 of the sizing machine 4, shearing is performed. The upper blade 7 of the machine 1 is lowered to shear. At that time, tilting roller table 3
is lowered by the cylinder 8 about the fulcrum P at the rear end at the same time as the upper blade 7 is lowered to prevent the material W from bending due to shearing.

By the way, as mentioned above, the upper surfaces of both tables 2 and 3 and the upper surface of the lower blade 5 of the shearing machine 1 are located on the same horizontal plane, so when the material is fed, the lower blade 5 and the material surface come into contact and the material is There is a problem of scratches.

Therefore, the present inventors made only the tip roller R1 of the roller table 2 capable of being raised and lowered, and when carrying in the material, the tip roller R1 was slightly raised to supply the material. In cases where the material sag, the fixed length is large, or the material is thin, scratches still occur, and the problem remains unsolved. Furthermore, the tilting roller table 3 on the rear side is raised in the opposite direction to the cutting operation, and the roller R1
I thought of setting it at the same level as the tip roller R1' of the tilting roller and conducted an experiment. As shown in FIG. may interfere with the tilting roller R', or the gap H between the upper surface of the roller table and the lower surface of the stopper 6 may become large at the rear, and the stopper 6 may interfere with the tilting roller R', as shown by the two-dot chain line in the figure, especially when using thin-sized materials.
A problem arose in that it was not possible to determine the size because the object passed through the object.

In view of the above-mentioned circumstances, the present invention was developed with the aim of making it possible to reliably cut the material to a fixed length without creating scratches on the material to be cut and without having to adjust the level of the sizing machine stopper. , its features include a roller table for loading materials installed on the front side of the shearing machine, and a tilting roller table that can swing vertically with respect to the pass line installed on the rear side of the shearing machine. In the front and rear tables of the shearing machine, which are comprised of the following, only the rollers of the two tables in the vicinity of the shearing machine are independently movable up and down with respect to the pass line.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 3 shows an embodiment of the present invention.
The same reference numerals as those shown in the figures and FIG. 2 indicate the same parts.

2 is a roller table for carrying in material arranged on the front side of the shearing machine 1, and the roller R1 closest to the shearing machine 1
The roller R1 is provided independently, and the roller R1 is vertically movable by a cylinder 9.

Reference numeral 3 denotes a tilting roller table disposed on the rear side of the shearing machine 1, and the rear end of the table 3 has a bearing 10.
, and is configured to be swingable in the vertical direction about a fulcrum P. 8 is the swinging cylinder. The tip roller R1' of the table 3 closest to the shearing machine is pivotally supported on a swinging frame 11 that is pivotably supported on the tip of the table 3, and is movable up and down in the vertical direction by a cylinder 12. There is.

It goes without saying that the roller R1 may also have the same configuration as the roller R1'.

The operation of the front and rear table according to the present invention having the above configuration will be explained according to the fixed length cutting process. First, the sizing machine 4 is moved according to the desired product length, and the stopper 6 is at the fixed sizing position. Sizing machine 4 at the position
is fixed, and then the roller R of the roller table 2 is fixed.
1 and the roller R1' of the tilting roller table 3 are positioned by operating the cylinders 9 and 12 so that their upper surfaces are located above the upper surface of the lower blade 5 of the shearing machine 1.

In this state, when a plurality of materials W are carried in parallel, they enter the tilting table 3 via the roller table 2 and shearing machine 1 due to the driving force of the roller R, and collide with the stopper 6 of the sizing machine 4. Then, due to the driving force of the roller R', the ends of the plurality of parallel materials W are aligned with the front surface of the stopper 6, and when this is finished, the rollers R1 and R1' return to their original positions and the fixed size is achieved. Complete.

When this sizing is completed, the upper blade 7 of the shearing machine 1 descends to cut the material W to the sizing. At that time, the upper blade 7
In order to prevent bending due to lifting of the material due to pressing against the material W, the tilting table 3 is lowered by the cylinder 8 at the same time as the upper blade 7 is lowered, and immediately returns to the original position after cutting is completed. .

Therefore, since the upper surfaces of the rollers R1 and R1' are above the level of the upper surface of the lower blade 5 when the material is carried in, the material is supplied without any contact with the lower blade 5, so there are no scratches on the surface of the material. I never get it.

In addition, since the tilting table 3 is held horizontally even when the material is being carried in, the clearance between the stopper 6 of the sizing machine 4 and the surface of the roller R' can always be set to the minimum, so that the material does not pass through the bottom surface of the stopper. There is no need to put it away. Further, even if the sizing machine 4 is moved according to the sizing length, there is no need to adjust the level of the stopper 6.

As is clear from the above explanation, by using the front and rear tables according to the present invention, it is possible to reliably cut to a specified size without causing scratches on the material, and the effect of this will greatly contribute to the industrial world. It is something.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of a conventional front and rear table, Figure 2
The figure is an explanatory diagram of the fixed length cutting equipment implemented in the process of creating the present invention, and FIG. 3 is an explanatory diagram of the front and rear table according to the present invention. 1... Shearing machine, 2... Roller table, 3...
Tilting roller table, 4... Sizing machine, 5...
...Lower blade, 6...Stopper, 7...Upper blade, 8,
9,12...Cylinder.

Claims (1)

[Scope of utility model registration request] The front and rear surfaces of a shearing machine are comprised of a roller table for carrying in material provided on the front side of the shearing machine, and a tilting roller table that is provided on the rear side of the shearing machine and can swing in a direction perpendicular to the pass line. 1. A front and rear table for a shearing machine, characterized in that, in the table, only the rollers of the two tables closest to the shearing machine are configured to be able to move up and down independently with respect to a pass line.