JPH01317603A - Buckling preventive device for edging press - Google Patents

Abstract

PURPOSE:To obtain high buckling preventive power by disposing respectively plural press rolls to the front and rear surfaces of a material between dies. CONSTITUTION:The part of the material 1 near the centroid position where the edging force acts between the dies 13 and 13 is pressed by >=2 pieces of the press rolls 20, 21, 22, 23 by elongating and contracting a cylinder 28 to move a slide member 15 in the line direction in case of edging said material. The front and rear surfaces of the material 1 near the centroid position where the edging force acts are pressed by the press rolls 20-23 if the edging of the material 1 is executed in such a manner, by which the buckling of the material 1 is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a buckling prevention device for a width reduction press for slabs or the like in a rolling line.

[Prior Art] Conventional buckling prevention means for width reduction presses are disclosed in, for example, Japanese Patent Application Laid-Open No. 82-101335, as shown in Fig. 12 and Fig. 1.
As shown in Figure 3, molds 2 and 3 are designed to reduce the width of the material 1, such as a slab, by pressing both sides of the material 1.
are arranged opposite to each other so as to sandwich the line of the material 1, and one presser roll 4.5 is placed each on the upper and lower surfaces of the material 1 between the molds 2.3 for the width reduction press, and the presser rolls 4. .5 materials! By pressing down the material from above and below and performing width reduction, buckling of the material I during width reduction is prevented.

[Problems to be Solved by the Invention] However, in the conventional buckling prevention means of the width reduction press described above, only one presser roll 4, 5 is provided on each of the upper and lower surfaces of the material l, so buckling of the material is prevented. There is a limit to the amount of width reduction that can be prevented, and the buckling prevention ability is not very large.

In view of the above-mentioned circumstances, the present invention aims to provide a buckling prevention device for a width reduction brace with high buckling prevention ability, which can prevent material buckling even when the amount of width reduction is significantly increased. This is the purpose.

[Means for Solving the Problem] The first invention provides a width reduction press in which width reduction molds are arranged on both sides of a material line so that they can approach and separate. It is characterized in that a plurality of presser rolls are provided.

In the second invention, with respect to one presser roll among the plurality of presser rolls, the other presser roll is positioned upstream of the line with respect to the material feeding direction and is arranged so as to be rotatable toward the upper and lower surfaces of the material. It is characterized by the fact that

The third aspect of the invention is to position one of the plurality of presser rolls on the upstream and downstream sides of the line with respect to the material feeding direction, and rotate the other presser rolls toward the upper and lower surfaces of the material. It is characterized by being movably arranged.

The fourth invention is a width reduction press in which width reduction dies are arranged on both sides of a material line so that they can approach and separate, and a dies that press the material on at least one of the upper and lower surfaces of the material between the dies. It is characterized by having the following.

[Function] Therefore, in the first and second inventions, the normal width reduction of the material is performed while pressing the upper and lower surfaces of the material in the vicinity of the center of gravity of the width reduction blade with a plurality of presser rolls, and in the third invention, the same method is applied. to perform reverse width reduction of the material, and in the fourth invention,
Width reduction of the material is carried out while at least one of the upper and lower surfaces of the material within the area where the width reduction blade acts is pressed by a mold.

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

FIGS. 1 and 2 are explanatory diagrams of an embodiment of the first invention.

A housing 6 is provided through which the material l passes through the central part,
It is driven via a worm gear 7 which is rotated by a drive device (not shown) on both sides of the housing 6, a worm wheel 8 which meshes with the worm gear 7, and a threaded shaft 9 which is screwed into the axial center of the worm wheel 8. A position adjustment block IO is provided to which force is transmitted and the block moves toward and away from the material 1, and a reduction cylinder U whose rod is directed toward the material 1 is attached to the block IO, and the rod is slid onto the tip of the rod of the reduction cylinder 11. Attach the mold 13 via 12,
After adjusting the interval between the blocks 10.10 according to the width dimension of the material Ill, the reduction cylinder It is expanded and contracted to move the molds 13.13 closer to each other and away from each other, so that the width reduction of the material 1 can be performed.

Guides 14 extending in the line direction are provided at positions vertically apart from the material 1 of the housing 6, and the guides 14
Attach a slide member 15 movable in the line direction to the side of the material L, and place the rod on the material side of the slide member 15. Install multiple sets (4 sets in the figure) of cylinders 1B, 17°18.19 toward the
．． 17. Axle box 24.25 holding presser rolls 20.21, 22°23 of equal length at the rod tip of 18.19
．． 28. 27 is fixed, and a cylinder 28 extending in the line direction is attached to the housing 8. do.

Next, the operation will be explained. When width-reducing the material 1, the cylinder 28 is expanded and contracted to move the slide member 15 in the line direction, and two or more presser rolls 20. 2+, 22.2
3 so that it can be held down.

Also, when material 1 is reduced in width, the thickness of material 1 increases in the area where width reduction has been performed, so the relationship between the amount of width reduction and the amount of increase in wall thickness is determined in advance by calculation or actual measurement. Extend and contract cylinders 16, 17, 18゜19 and presser roll 2
0, 21, 22.23 are height positions at which the surface of the material 1 can be pressed, taking into consideration the amount of increase in wall thickness at the position in the line direction.

In this way, when the width of the material 1 is reduced, the upper and lower surfaces of the material 1 in the vicinity of the center of gravity of the width reduction blade are moved by a plurality of presser rolls 2.
Since it can be held down by 0.2+ and 22.23,
For example, even when the reduction amount is approximately twice that of the conventional method, buckling of the material 1 can be prevented, and the buckling prevention ability is significantly improved.

FIG. 3 is an explanatory diagram of another embodiment of the first invention;
In the configuration substantially similar to that shown in the figure, presser rolls 2 with different lengths
9.30.31.32 are arranged so that the length decreases as it goes downstream.

Even in this case, since the upper and lower surfaces of the material near the center of gravity of the width reduction blade can be pressed by the plurality of presser rolls 29, 30, 31, 32, the ability to prevent buckling can be greatly improved. , presser rolls 29, 30 .
31, 32, so by selecting the optimal presser roll 29° 30, 31, 32 according to the width of the material 1, buckling can be achieved in the best condition for any material 1 with a different width. Prevention can be carried out.

FIG. 4 is an explanatory diagram of an embodiment of the first and second inventions,
Material l of the housing B of the width reduction press, which is approximately the same as in Fig. 1.
Guides 33 extending in the line direction and movable up and down are provided at positions further apart vertically, and the surface of the guides 33 opposite to the material 1 is provided with a cylinder 35 fixed to a horizontal member 34 fixed to the housing 6. A slide member 37 that is supported to be raised and lowered and is movable in the line direction by a cylinder 36 is attached to the surface of the guide 33 on the material 1 side, and a support bracket 38 is fixed to the surface of the slide member 37 on the material 1 side. A presser roll 40 is rotatably provided on a pin 39 fixed to a support bracket 38, and one or more (two in the figure) presser rolls 4 are installed toward the upstream side in the direction of movement of the material.
A rotating member 43 to which a shaft 42 that rotatably holds the rotating member 1 is fixed.
A plate member 44 is fixed to the upstream end of the rotating member 43 on the upstream side of the material 1. The plate member 44 is inclined and extends toward the side closer to the material 1 as it goes upstream of the material 1. Moreover, the plate member 44
A roll 47 that can be moved on the surface of the material 1 side of the slide member 37 is brought into contact with the inclined surface of the cylinder 45 via the axle box 4B, and the rotary member 43 is moved toward and away from the material 1. It is configured to be rotatable so that it can be rotated.

In the figure, 48 is a guide member whose end is fixed to the slide member 37 and passes through the rotating member 43, and 49 is provided to surround the rotating member 43 and urges the presser roll 41 in the direction away from the material l. It is a spring for

When rolling down the width of the material 1, adjust the height of the presser rolls 40 and 41 using the cylinder 35 according to the thickness of the material 1, expand and contract the cylinder 36 to move the slide member 37 in the line direction, and roll the metal. The area near the center of gravity of the width reduction blade between the molds 13.13 can be pressed down by two or more presser rolls 40.41, and the relationship between the amount of width reduction and the amount of increase in wall thickness has been calculated and measured in advance. Find the cylinder 45
is extended and the roll 47 is rolled along the slide member 37, and the rotation member 43 is moved to the spring 49 via the plate member 44.
By overcoming the resistance of the presser rolls 40 and 41, the surface of the material I is rotated, taking into consideration the amount of increase in wall thickness at that position in the line direction, and the surface of the material I is set at a height that can be pressed, and in this way, the width of the material I is When rolling down, the upper and lower surfaces of the material 1 near the center of gravity of the width rolling blade can be pressed by the plurality of presser rolls 40, 41, making it possible to prevent buckling of the material 1.

5 to 7 are explanatory diagrams of an embodiment of the first and third inventions, in which a presser foot is provided on the upstream side and downstream side of the presser roll 40 provided on the support bracket 38 having the same structure as that in FIG. roll 4
Rotating member 43 having the same configuration as in FIG. 4 except that 1 is changed to one.
etc. are arranged symmetrically with respect to the presser roll 40, so that buckling of the material 1 can be prevented even during reverse width reduction. In FIGS. 6 and 7, 50 is a mold for reverse width reduction.

When using the reverse width reduction mold 50 to move the material 1 from upstream to downstream (FIG. 6) or from downstream to upstream (FIG. 7), the same operation as in FIG. 4 is performed. Buckling of the material 1 can be prevented by pressing the upper and lower surfaces of the material 1 near the center of gravity of the width reduction blade with a plurality of press rolls 40,41.

FIG. 8 to FIG. 1O are explanatory diagrams of an embodiment of the fourth invention.

Material 1 of the housing 6 of a width reduction press substantially similar to that shown in FIG.
Brackets 51.51 are provided at the upper and lower positions of the entry side portion, respectively, and the upstream ends of undulation members 52.53 extending in the line direction are rotatably pivoted around pins 54 to the brackets 51.51. Connect the rod side of the cylinder 55 extending downward on the road, the head side of which is connected to an external frame (not shown) at a position downstream from the pin 54 pivot point on the opposite side of the material 1 of the member 52.53. so that the undulating members 52 and 53 can be undulated by expanding and contracting the cylinder 55,
A mold 57 is attached to the material l side surface of the upper undulating member 52 so as to be movable in the line direction along a guide groove 56 provided in the undulating member 52, and a mold 57 is attached to the support member 58 attached to the downstream end of the undulating member 52. Connecting a cylinder 59 extending in the line direction, connecting the mold 57 to the rod of the cylinder 59,
The mold 57 can be moved in the line direction by expanding and contracting the cylinder 59.

The mold 57 has a rectangular planar shape, and the contact area with the material 1 has a comb-like cross section in the width direction to reduce the contact area in order to prevent deformation due to heat from the material 1. Further, a horizontal portion 60 is formed on the upstream side, and an inclined portion 81 that slopes upward as it goes downstream is formed on the downstream side.

Normally, the mold 57 is installed upside down on the surface of the lower undulating member 53 facing the material 1, but in FIG. 9, the slide member 62 is attached along the guide groove 56 as in FIG. The slide member 82 is provided to be movable in the line direction, and a plurality of presser rolls 6B, 87, 68 are attached to the surface of one example of material of the slide member 82 via a plurality of cylinders 63, 64, 65. The slide member 82 is connected movably in the line direction by a cylinder 59 attached to the support member 58 in the same manner as the upper mold 57.

When width-reducing the material, the cylinder 59 is expanded and contracted to move the mold 57 and the slide member 62 in the line direction, and the upper surface of the material within the area where the width-reduction blade acts is removed by the mold 57.
The material can be pressed by the inclined portion 61 of the material, and two or more presser rolls 6B and [i7.8g can be used to press the area near the center of gravity of the width reduction blade on the lower surface of the material.

Further, the amount of increase in wall thickness when the width of the material 1 is reduced is determined in advance, and the cylinder 55 is expanded and contracted to tilt the undulating members 52, 53, respectively, and the mold 57 and presser rolls 66, 67, 6 are tilted.
8 is a height position at which the surface of the material 1 can be pressed in consideration of the increase in the thickness of the material 1 at that position in the line direction.

When the width reduction of the material 1 is performed in this way, the lower surface of the material 1 is pressed down near the center of gravity of the width reduction blade by the plurality of presser rolls 6B and fi7.68, and the width reduction blade acts on the upper surface of the material 1. As shown in FIG. 1, a plurality of presser rolls 20, 21, 22, 23, etc. can be used to hold down a wide area within the range of the width reduction blade, near the center of gravity of action of the width reduction blade. Even higher buckling prevention ability can be obtained than when pressing down.

Moreover, when the mold 57 is used, a plurality of presser rolls 20
．． Compared to the case of using 21, 22, 23, etc., maintenance is much easier as there is no need to perform surface management such as wear on the presser roll 20, 21, 22, 23, and there is no need to manage the bearing part. become.

FIG. 11 is an explanatory diagram of another embodiment of the fourth invention, in which a mold 69 having a trapezoidal planar shape whose width decreases as it goes downstream is provided in substantially the same configuration as FIG. 8. It is something that

Even in this case, compared to the case where multiple presser rolls are used, a higher buckling prevention ability can be obtained, and maintenance is much easier. The material 1 can be pressed by selecting the width dimension of the mold B9.

It should be noted that the present invention is not limited to the above-mentioned embodiments,
The holding mold 57°B9 for preventing buckling may be provided only on the bottom surface of the material 1 or on both the top and bottom surfaces, and various changes may be made without departing from the gist of the invention. Of course you can get it.

[Effects of the Invention] As described above, according to the buckling prevention device of the width reduction blade of the present invention, the upper and lower surfaces of the material near the center of gravity of the width reduction blade are held down by a plurality of presser rolls, or the width reduction blade acts. Since at least one of the upper and lower surfaces of the material within the area of the material is pressed down by a mold, a high ability to prevent buckling can be obtained, and when a mold is used, maintenance can be further facilitated. It can produce excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of one embodiment of the first invention, and FIG. 2 is an explanatory diagram of an embodiment of the first invention.
3 is an explanatory diagram of another embodiment of the first invention, FIG. 4 is an explanatory diagram of one embodiment of the first and second inventions, and FIG. 1. Explanatory diagram of an embodiment of the third invention, No. 6
7 and 7 are explanatory diagrams of the embodiment shown in FIG. 5 during reverse pressure reduction, FIG. 8 is an explanatory diagram of an embodiment of the fourth invention, and FIG. 9 is a view taken along the IX-IX arrow in FIG. 8. , FIG. 1θ is an explanatory diagram of the cross section of the mold, FIG. U is an explanatory diagram of another embodiment of the fourth invention, FIG. 12 is an explanatory diagram of the conventional example, and FIG. −■ It is a view from the arrow. In the figure, l is the material, 13.50 is the mold, 20.21.22
,23°29.30.31.32.40,41.88.
87.68 indicates a presser roll, and 57°69 indicates a mold.

Claims (1)

[Scope of Claims] 1) A width reduction press in which width reduction molds are arranged on both sides of the material line so that they can approach and separate, and a plurality of presser rolls are arranged on the upper and lower surfaces of the material between the dies, respectively. A buckling prevention device for a width reduction press. 2) For one presser roll among multiple presser rolls,
2. The buckling prevention device for a width reduction press according to claim 1, wherein the other presser roll is located upstream of the line with respect to the material feeding direction and is rotatably arranged toward the upper and lower surfaces of the material. 3) For one presser roll among multiple presser rolls,
The width reduction press according to claim 1, characterized in that the other presser rolls are located on the upstream side and the downstream side of the line with respect to the material feeding direction, and are arranged so as to be rotatable toward the upper and lower surfaces of the material. Anti-buckling device. 4) For a width reduction press in which width reduction dies are arranged on both sides of the material line so that they can approach and separate, a die for pressing the material is provided on at least one of the upper and lower surfaces of the material between the dies. A buckling prevention device for width reduction presses featuring: