JPH0671605B2 - Material twist prevention device for width sizing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to prevention of material twist in a width sizing press.

[Prior Art] In recent years, compared with roll width rolling, a large width reduction can be obtained at one time, the internal porosity of a slab or the like has a large pressure-bonding effect, and no downstream rolling is performed because dogbones do not occur. Various researches have been carried out on reducing the width of a hot material by a width sizing press because it has excellent effects such as less fish tail formation during molding. FIG. 3 shows an example of the width sizing press, in which the press dies c and d provided on both sides in the width direction of the hot work material b supported and sent on the support roller a are reciprocally moved in the arrow direction. By hot pressing, the width of the hot material b is reduced.

[Problems to be Solved by the Invention] However, in the case where the hot material b simply supported on the supporting roller a is to be width-reduced by the press dies c and d as described above, the hot-material is reduced by the pressing force. There is a problem that b is escaping upward and twists up e, so that the material cannot be rolled down, and a width movement occurs between the material and the rolled portion. In an extreme case, the hot material b is pressed into the press die c. Therefore, there was a problem that the width reduction became completely impossible because of the deviation from d, and there was a danger at that time. Further, the phenomenon of the twist-up e often occurs especially when the rear end portion of the material is width-reduced, because the restriction by the weight of the material itself is eliminated. Further, when the material b is twisted from the beginning, there is a problem that the phenomenon of the twisting up e is more likely to occur.

The present invention was made by focusing on the above-mentioned conventional problems,
The purpose is to prevent the material from twisting up during width reduction by the width sizing press, improve the quality of the material, perform reliable width reduction, and improve safety.

[Means for Solving Problems] The present invention is intended to solve the above technical problems,
In front of the material traveling direction in the width sizing press,
Material twist of a width sizing press, characterized by comprising a support roll having a left-right leveling adjustment mechanism to support the entire width of one side of the material, and a holding roll for pressing and supporting the material against the support roll. The present invention relates to a prevention device.

[Operation] Therefore, in the present invention, the vertical position and the horizontal height of the support roll are adjusted by the left-right leveling adjustment mechanism so that the material is held at right angles to the press mold of the width sizing press and The material is prevented from being twisted at the time of pressing by being introduced at an intermediate position in the vertical direction and by firmly pressing the material against the supporting roll by the pressing roll.

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

FIGS. 1 and 2 show one example of the present invention. By pressing the press dies 2 and 3 back and forth in the direction of the arrow on both sides of the hot material 1 in the width direction, the width of the material 1 is reduced. A widthwise sizing press 4 is provided for supporting the lower surface of the material 1 on the front side (upstream side) in the traveling direction of the material 1 in the width sizing press 4. And a twist prevention device 7 having a pressing roll 6 for pressing the material 1 against the supporting roll 5.
Is provided.

The support roll 5 in the anti-twist device 7 is provided with screws 10 and 11 for raising and lowering both shaft ends thereof by rotation of wheels 8 and 9, and the wheels 8 and 9 are connected to a motor 12, a drive screw shaft 13 and a clutch 14. It is supported by a left and right leveling adjusting mechanism that is rotationally driven simultaneously or separately via.

Further, the pressing roll 6 is arranged right above the supporting roll 5, and is moved up and down by a pressing drive device 15 such as a hydraulic cylinder or a worm mechanism provided on the upper part to press the upper surface of the material 1. You can do it.

Further, a support roll 5 having a left-right leveling adjusting mechanism is also provided on the rear side of the width sizing press 4 as described above.

In the above, the height position of the support roll 5 is adjusted by the left-right leveling adjustment mechanism, and the clutch 14 is disengaged to set the height of the end of the support roll 5 on the screw 10 side with reference to the end of the support roll 5 on the screw 11 side. The height is adjusted right and left by changing the height so that the material 1 supported on the upper surface of the support roll 5 is guided at a right angle to the pressure lower surface of the press dies 2 and 3. When the material 1 is advanced in this state, the material 1 supported by the support roll 5 becomes at right angles to the press dies 2 and 3.

Subsequently, the pressing drive device 15 lowers the pressing roll 6 to press the material 1 against the supporting roll 5. In this state, width reduction is performed by the press dies 2 and 3 of the width sizing press 4. At this time, the material 1 is supported at right angles to the press dies 2 and 3, and is firmly held by the support roll 5 and the pressing roll 6, so that it is possible to prevent the material 1 from twisting up.

Further, the pressing of the material 1 by the pressing roll 6 is carried out only when the width reduction by the pressing dies 2, 3 is carried out, and the other is separated from the material 1 to assist the progress of the material 1. .

Incidentally, the present invention is not limited to the above embodiment, the left and right leveling adjusting mechanism of the support roll, the pressing drive device of the pressing roll, and the like can be variously changed, and within the scope not departing from the gist of the present invention. Of course, various changes can be made.

[Effects of the Invention] As described above, according to the material twist prevention device for the width sizing press of the present invention, a support roll provided with a left and right leveling adjustment mechanism on the front side of the width sizing press,
With a pressing roll equipped with a pressing drive device, the material is adjusted so that it is introduced while being held at a right angle to the width sizing press die, and it is firmly sandwiched, and width reduction is performed in this state. It is possible to obtain an excellent effect that the twist of the material can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a cut-away side view showing an embodiment of the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 shows a general action during width reduction by a width sizing press. FIG. 1 is a hot material, 2 and 3 are press dies, 4 is a width sizing press, 5 is a support roll, 6 is a press roll, 7 is a twist preventive device, 8 and 9 are wheels, 10 and 11 are screws, and 12 is A motor, 13 is a drive screw shaft, 14 is a clutch, and 15 is a pressing drive device.

Claims (1)

[Claims] 1. A support roll provided with a left and right leveling adjustment mechanism to support the entire width of one side surface of the material on the front side in the advancing direction of the material in a width sizing press, and the material is pressed against and supported by the support roll. A material twist prevention device for a width sizing press, which is provided with a press roll.