JPH0639403A - Device for connecting sheet bar - Google Patents

Abstract

PURPOSE:To prevent the bend of a sheet bar at the time of transportation and also to restrain the bend of the sheet bar as as possible at the time of joining. CONSTITUTION:This device is constituted of a hydraulic cylinder 30 with which an intermediate roller 8 is vertically driven, solenoid valve 31, tank 32, solenoid valve 33, tank 34, pilot check valve 35, relief valve 36, pressure gage 37 and pump 38. At the time of transporting the sheet bar 3, the working of the hydraulic cylinder 30 is controlled by controlling pressurized oil from the pump 38 with the solenoid valve 31, the intermediate roller 8 is set at a prescribed height and the intermediate roller 8 is used as a guide roller by controlling pressurized oil from the pump 38 with the solenoid valve 31, the intermediate roller 8 is set at a prescribed height and used as a guide roller. At the time of joining the sheet bars, the pressurized oil accompanying the lowering of the hydraulic cylinder 8 is released to the tank 34 through the solenoid valve 33 and relief valve 36 and the intermediate roller 8 is lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat bar connecting device suitable for preventing the bending of the sheet bar during conveyance and suppressing the bending of the sheet bar during joining as much as possible.

[0002]

2. Description of the Related Art Conventionally, in a hot line, it is possible to prevent a decrease in line speed due to passing of each sheet bar,
At the same time, in order to prevent the occurrence of a defective shape at the front end and the rear end of the sheet bar, a plurality of sheet bars before the finishing rolling process are connected in the longitudinal direction, and after the finishing rolling process is completed, the sheet is It is practiced to disconnect the bar from the connection. In this case, when joining a plurality of seat bars, as shown in FIGS.
Groove M1 is provided on the joining surface of No. 1 and the other seat bar B2
M2 is provided on the joint surface of the
The seat bars are joined to each other by engaging the sheet bars with each other. As the joining method and joining device for the sheet bar, for example, the technique described in JP-A-63-13907 is provided, and as the hot-rolled material connecting device, for example, JP-A-61-23503. The techniques described are provided.

[0003]

However, in the above-mentioned prior art, the sheet bar is supported and guided between the two mold lower blades that are installed at a predetermined interval in the sheet bar conveying direction. Since no guide roller (intermediate roller) is provided, the rear end portion of the preceding sheet bar and the leading end portion of the succeeding sheet bar are punched into a jigsaw type as described above when the sheet bar is conveyed. When joining the pulled-out sheet bars to each other, it was not possible to prevent the bending of the sheet bars. Therefore, there is a problem that the sheet bar is bent during transportation or joining.

The present invention solves the above problems, and an object of the present invention is to provide a seat bar connecting device which prevents the bending of the sheet bar during conveyance and suppresses the bending of the sheet bar during joining as much as possible. .

[0005]

In order to achieve the above object, the present invention provides a lower die lower blade on the downstream side and an upstream die lower blade disposed on the base frame at a predetermined interval in the sheet bar conveying direction. The lower edge of the die and the lower frame of the upper frame, which can be moved up and down in the space above the base frame, are arranged to cooperate with the lower die on the downstream side to form the rear end portion of the preceding seat bar into a predetermined shape. The upper die of the downstream side for processing into the upper die, the upper die of the upstream side for cooperating with the lower die of the upstream side to process the leading end portion of the subsequent sheet bar into a predetermined shape, and the downstream die. A sheet bar connecting device, comprising: an intermediate roller for supporting and guiding a sheet bar, the sheet bar connecting device being disposed between the die lower blade and the upstream die lower blade. When not joining, the intermediate roller is pushed up to a predetermined height position, During joining of the preceding sheet bar and the succeeding sheet bar obtained by processing the ends, characterized by comprising providing a lifting means for lowering the intermediate rollers from the predetermined height position.

[0006]

According to the present invention, since the height of the intermediate roller is controlled to be elevated by the elevating means depending on whether the sheet bars are not joined or joined, it is possible to reliably prevent the sheet bar from bending during conveyance. At the same time, it is possible to suppress unnecessary bending when joining the preceding sheet bar and the succeeding sheet bar as much as possible.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the outline of the seat bar connecting device of the present embodiment will be described with reference to FIG. 3. The seat bars 2, 3 are provided on the base frame 1 at predetermined intervals in the traveling direction, and the cutting edges face each other with the center of the base frame 1 interposed therebetween. Disposing the mold lower blades 4 and 5,
Of the mold lower blades 4 and 5, the height of the seat bar 2 and the mold lower blade 4 on the downstream side in the traveling direction is lower than the height of the seat bar 2 and 3 and the mold lower blade 5 on the upstream side in the traveling direction. And lower dies for both dies 4, 5
The height difference between the sheet bars is slightly larger than the maximum sheet thickness of the sheet bars 2 and 3 to be pressed. Further, a plurality of table rollers 6 arranged at the same height as the mold lower blade 4 are arranged at predetermined intervals on the downstream side of the mold lower blade 4 on the downstream side of the seat bars 2 and 3 in the traveling direction, Seat bar 2, 3 on the upstream side of the mold lower blade 5 on the upstream side in the traveling direction,
A plurality of table rollers 7 arranged at the same height as the mold lower blade 5 are arranged at a predetermined interval, and the sheet bars 2, 3 are provided between the mold lower blade 4 and the mold lower blade 5. Intermediate roller (guide roller) 8 having the same height as the lower die 5 on the upstream side in the traveling direction
Is provided.

Further, a short column 11 having a hole 10 extending along the axis and a long column 13 having a predetermined length and having a ram 12 at the lower end which can be slidably fitted in the hole 10 of the short column 11. The strut 14 formed to be expandable and contractible is used for the base frame 1
The upper frames 15 are arranged in the four corners of the base frame 1 so as to be capable of expanding and contracting in the vertical direction and are supported by the columns 14 so as to be able to move up and down.
Further, mold upper blades 16 and 17 corresponding to the respective mold lower blades 4 and 5 are provided on the lower surface of the upper frame 15, and the seat bar 2 and the mold lower blade 4 on the downstream side in the traveling direction and the mold. With the upper blade 16, the groove 18 at the rear end of the preceding seat bar 2 is punched out, and the seat bar 2 and the die lower blade 5 on the upstream side in the traveling direction are formed.
And the die upper blade 17 are formed so as to be capable of punching 19 at the leading end of the succeeding sheet bar 3.

The seat bars 2, 3 upper die 16 on the downstream side in the traveling direction are fixed to the lower surface of the upper frame 15, and the upper die 17 on the upstream side in the seat bars 2, 3 traveling direction are
The lower surface of the upper frame 15 is slidably fitted into a groove 20 extending in a direction perpendicular to the traveling direction of the seat bars 2 and 3. The groove 2 is formed on the outer side of the upper frame 15.
A hydraulic cylinder (not shown) in which the rod expands and contracts in a direction parallel to the extending direction of 0 is provided, the rod tip of the hydraulic cylinder is connected to the side surface of the die upper blade 17, and the rod of the hydraulic cylinder is extended in the extending direction. By operating, the mold upper blade 1
7 is formed so as to be able to move to the seat bar 2, 3 on the anti-hydraulic cylinder side, outside the plate passing area. Then, the base frame 1 and the table rollers 6 and 7 are arranged and fixed on the press bed 25, and the upper frame 15 is fixed to the lower surface of the cross head 26 of the press, whereby the seat bar connecting device 27 formed as described above. Is attached to the press machine.

Further, the construction of the hydraulic control system of the seat bar connecting apparatus of this embodiment is constructed as shown in FIGS. The hydraulic control system is composed of a hydraulic cylinder 30, a solenoid valve 31, a tank 32, a solenoid valve 33, a tank 34, a pilot check valve 35, a relief valve 36, a pressure gauge 37, and a pump 38 that drives the intermediate roller 8 to move up and down. Has been done. Before joining the rear end portion of the preceding sheet bar 2 and the leading end portion of the succeeding sheet bar 3, that is, when the succeeding sheet bar 3 is conveyed, as shown in FIG. 1, the pressure oil sent from the pump 38 is transferred to the solenoid valve 31. By controlling the operation of the hydraulic cylinder 30 via the, the intermediate roller 8 is set at a predetermined position, and the intermediate roller 8 is used as a guide roller of the sheet bar 3. On the other hand, at the time of joining the rear end portion of the preceding sheet bar 2 and the leading end portion of the succeeding sheet bar 3, as shown in FIG. 2, the hydraulic cylinder 8 is lowered when the intermediate roller 8 is pressed by the sheet bar 3. Solenoid valve 3 with the accompanying pressure oil
3. The intermediate roller 8 is lowered from the predetermined position by letting it escape to the tank 34 via the relief valve 36.

Next, the operation of the seat bar connecting device of the present embodiment constructed as described above will be explained.

When the sheet bar is being conveyed, as shown in FIG. 1, pressure oil is supplied from the pump 38 to the hydraulic cylinder 30 via the electromagnetic valve 31, and the operation of the hydraulic cylinder 30 is controlled to control the intermediate roller. Set the height of 8 in place. Then, the rear end of the preceding sheet bar 2 is stopped at a predetermined position on the die lower blade 4, and the front end of the succeeding sheet bar 3 is stopped at a predetermined position on the die lower blade 5.

At the time of joining the sheet bars, as shown in FIG. 2, the upper blade 16 of the die is lowered with respect to the lower blade 4 of the die to punch a groove at the rear end of the preceding sheet bar 2. On the other hand, by lowering the die upper blade 17 with respect to the die lower blade 5, the dovetail is formed at the tip of the succeeding sheet bar 3. After that, when the trailing end portion of the preceding sheet bar 2 and the leading end portion of the succeeding sheet bar 3 are overlapped by an unillustrated stacking device, the intermediate roller 8 is pressed due to the bending of the succeeding sheet bar 3 during the stacking. As a result, the hydraulic cylinder 30 descends, and the pressure oil of the hydraulic cylinder 30 is delivered to the relief valve 36 via the solenoid valve 33. When the pressure gauge 37 indicates a predetermined pressure, the pressure oil escapes from the relief valve 36 to the tank 34, so that the intermediate roller 8 descends. As a result, it is possible to prevent the sheet bar from being bent more than necessary during transportation or joining.

That is, according to the seat bar connecting apparatus of the present embodiment, the lifting and lowering of the intermediate roller 8 is appropriately adjusted by the hydraulic control, so that the bending of the seat bar at the time of conveyance can be prevented and the preceding and succeeding sheet bars can be prevented. It is possible to suppress unnecessary bending at the time of joining of the.

In the above embodiment, the preceding and succeeding sheet bars are stopped at predetermined positions, and then the two sheet bars are joined together. However, the present invention is not limited to this. Without stopping the bar and
It is also possible to join them while transporting.

[0016]

As described above, according to the present invention, the downstream mold lower blade and the upstream mold lower blade which are arranged on the base frame at a predetermined interval in the sheet bar conveying direction. And a lower end of the upper seat, which is arranged on the lower surface of the upper frame that can be moved up and down in the space above the base frame, and which cooperates with the downstream die lower blade to process the rear end of the preceding seat bar into a predetermined shape. Side mold upper blade, an upstream mold upper blade that cooperates with the upstream mold lower blade to process the leading end of the subsequent sheet bar into a predetermined shape, and the downstream mold lower blade. A sheet bar connecting device provided between the upstream die lower blade and an intermediate roller for supporting and guiding the sheet bar, wherein the preceding sheet bar and the following sheet bar are not joined. While pushing up the intermediate roller to a predetermined height position, the end part is processed into a predetermined shape. Since the elevating means for lowering the intermediate roller from the predetermined height position is provided at the time of joining the preceding sheet bar and the succeeding sheet bar, it is possible to surely prevent the bending of the sheet bar at the time of conveyance and to prevent the preceding sheet bar and the succeeding sheet bar from being bent. It is possible to obtain an effect such that unnecessary bending at the time of joining the seat bars can be suppressed as much as possible.

[Brief description of drawings]

FIG. 1 is a hydraulic control diagram of a seat bar connecting device according to an embodiment of the present invention.

FIG. 2 is a hydraulic control diagram of the seat bar connecting device according to the embodiment of the present invention.

FIG. 3 is a side view of the seat bar connecting device according to the embodiment of the present invention.

FIG. 4 is a perspective view of a seat bar before joining.

FIG. 5 is a perspective view of the seat bar after joining.

[Explanation of symbols]

 1 Base Frame 2 Leading Seat Bar 3 Subsequent Seat Bar 4, 5 Mold Lower Blade 8 Intermediate Roller 15 Upper Frame 16, 17 Mold Upper Blade 30 Hydraulic Cylinder (Elevating Means)

Claims (1)

[Claims] 1. A lower mold die on the downstream side, a lower mold die on the upstream side, which are arranged on the base frame at predetermined intervals in the sheet bar conveying direction, and can move up and down in a space above the base frame. Is arranged on the lower surface of the upper frame, and the upper die of the downstream die, which cooperates with the lower die of the downstream die to process the rear end portion of the preceding sheet bar into a predetermined shape, Between the upstream mold upper blade that cooperates with the mold lower blade to process the leading end of the subsequent sheet bar into a predetermined shape, and between the downstream mold lower blade and the upstream mold lower blade. Is a sheet bar connecting device that is provided with an intermediate roller that supports and guides the sheet bar, and pushes up the intermediate roller to a predetermined height position when the preceding and succeeding sheet bars are not joined. On the other hand, the leading and trailing sheet bars whose ends are processed into a predetermined shape A seat bar connecting device, characterized in that an elevating means for lowering the intermediate roller from the predetermined height position is provided at the time of joining.