JPH0235361Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an inter-stand edger.

[Prior Art] Conventionally, when an edger equipped with so-called flat hard rolls without grooves on the circumferential surface is installed between the stands of a finishing rolling mill to perform width reduction rolling of a thin strip, the rolling force is As a result, the strip may buckle, so a looper applies tension to the strip to prevent buckling.

[Problems to be solved by the invention] However, even in this conventional method, there was a problem in that it was not possible to set a large rolling reduction amount beyond a certain level.

In view of the above circumstances, the present invention eliminates the risk of buckling, enables width rolling with a large reduction amount, and allows the pressing direction of the strip to be adjusted by following changes in the angle of approach of the strip by the looper. The aim is to provide an inter-stand editor.

[Means for Solving the Problems] The inter-stand edger of the present invention is an inter-stand edger that performs width reduction rolling of a thin strip, and the strip advancing line is sandwiched from above and below in the gap between hard rolls. A plurality of pairs of presser rolls are arranged in the line direction, and a frame is arranged above and below each presser roll, the downstream end of which in the line direction is pivotally connected to a fixed member so as to be rotatable in the vertical direction. and for each frame,
The presser roll is supported so as to be movable in the line direction via a pressing device.

[Function] Therefore, by selecting a presser roll with a length corresponding to the width dimension of the strip, it is possible to press the upper and lower surfaces of the strip, and by setting the rotation and inclination of the frame in accordance with the advancing angle of the strip, The presser roll can always be pressed from the right angle against the inclined strip. .

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows an example of the present invention, in which a rolling mill stand 3 consisting of a work roll 1 and a backing roll 2,
An edger 6 for width reduction rolling of the strip 5 is provided between the strips 4 and 4, and a looper 8 for applying tension to the strip 5 via a looper roll 7 is provided upstream of the edger 6 in the strip advancing line.

The edger 6 rolls the strip 5 to its width by means of a pair of hard rolls 9, 9 placed on the left and right sides of the strip 5. Further, as shown in FIGS. 2 to 4, the hard rolls 9, 9 are connected to the inner housings 10, 10 and the outer housing 1.
1 and 11, and the reduction screw 1
The roll gap is adjusted in steps 2 and 12. At the top and bottom of the strip 5 in the roll gap,
A plurality of presser rolls 13a to 13d are provided for pressing the strip 5, and these presser rolls 13a to 13d have different lengths, and are arranged in descending order from the upstream side to the downstream side of the hard rolls 9, 9. The strips are arranged substantially horizontally and face each other vertically, and their respective axes are perpendicular to the strip advancement line.

Each presser roll 13a to 13d is supported by a slide plate 15 via a press cylinder 14, respectively.
The slide plate 15 is slidably engaged with an opening/closing frame 16 arranged in the direction of the strip advancement line. Upper and lower opening/closing frames 16,1
The downstream ends of the strips 6 in the line direction are pivotally connected to the housing 17 of the rolling mill stand 3 by pins 19 at appropriate positions above and below the strip advancement line, and the upper and lower parts of the opening/closing frames 16, 16 are provided with the main body side facing above. The rod ends of opening/closing cylinders 18, 18 attached to the upper and lower parts of the housing 17 are connected.
Therefore, the opening/closing frames 16, 16 can be opened/closed (moved up and down) using the pins 19, 19 as fulcrums by the expansion/contraction movement of the opening/closing cylinders 18, 18. Further, the main body sides of slide cylinders 20, 20 are fixed to the slow flow ends of the opening/closing frames 16, 16 in the line direction via arms 22, 22, and the rod ends are connected to the ends of the slide plates 15, 15. Therefore, the slide cylinders 20, 2
By the telescopic movement of 0, any one of the presser rolls 13a to 13d is guided to the roll gap position through the movement of the slide plates 15, 15.

Next, with the edger 6 configured as described above,
The case where width reduction rolling of the strip 5 is carried out will be explained.

First, the presser rolls 13b, 13b in the illustrated case are selected to have the optimum length according to the width dimension of the strip 5, and the presser rolls 13b, 13b are attached to the slide plates 15, 15 by the slide cylinders 20, 20.
It is also set so that it moves via the pressing cylinders 14, 14 and is guided into the roll gap between the hard rolls 9, 9. And strip 5
Before the plate is threaded, by operating the opening/closing cylinders 18, 18, the opening/closing frames 16, 16 are opened on the upstream side using the pins 19, 19 as fulcrums as shown by the two-dot chain line in FIGS. 1 and 2. , strip 5
Make sure that it is easy to pass through the board.

Once the strip 5 has passed through and the looper 8 has operated, the opening/closing cylinders 18, 18 are operated in accordance with the entry angle of the strip 5, and the opening/closing frames 16, 1
6 is closed so that the upper and lower rows of presser rolls 13a to 13d are parallel to each other, and a slight gap is maintained between them and the strip 5. Next, the upper and lower presser rolls 13 located in the roll gap
b, 13b are brought into pressure contact with the upper and lower surfaces of the strip 5 by operating the pressing cylinders 14, 14.

By doing this, the strip 5 to be width rolled is pressed at its upper and lower surfaces by the upper and lower presser rolls 13b, 13b. Therefore, the width of the strip 5 can be rolled without the risk of buckling. As a result, rolling can be performed with a larger reduction amount than before, and production efficiency can be increased.

Further, during the above-mentioned width rolling operation, if tension fluctuation occurs in the strip 5 and the position of the looper roll 7 is displaced in order to adjust it, and the approach angle of the strip 5 changes, the tension is changed in accordance with the amount of change. Operate the opening/closing cylinders 18, 18 to open/close the opening/closing frame 16,
16 and strip 5 to maintain parallelism. Thereby, the presser rolls 13b, 13b can always be pressed perpendicularly to the strip 5.

In the above embodiment, the line downstream end of the opening/closing frame 16 is connected to the housing 17 of the rolling stand 3.
However, as shown by the two-dot chain line in Figure 4,
An arm 21 is provided in the outer housing 11,
It goes without saying that the arm 21 may be pivotally connected to the arm 21 by a pin 19, and that various other changes may be made without departing from the gist of the present invention.

[Effects of the invention] As explained above, according to the inter-stand edger of the present invention, a plurality of presser rolls of different lengths are arranged so as to be movable within the gap between the hard rolls,
By selecting a strip that corresponds to the width dimension of the strip so that it can be pressed against the upper and lower surfaces of the strip, buckling during width rolling can be effectively prevented for strips of various sizes. It becomes possible to set a larger size, and production efficiency can also be increased. Further, since the position of the presser roll can be adjusted depending on the angle of approach of the strip, the presser roll can be reliably pressed against the strip.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the arrangement of the inter-stand edger of the present invention, Figure 2 is a side view of the main parts, and Figure 3 is a schematic diagram showing the arrangement of the inter-stand edger of the present invention.
The figure is a view taken along the - arrow in FIG. 2, and FIG. 4 is a view taken along the - arrow in FIG. 3 and 4 are rolling mills, 5 is a strip, 6 is an edger, 9 is a hard roll, 13a to 13d are presser rolls, 14 is a pressing cylinder, 15 is a slide plate, 1
6 is an opening/closing frame, 18 is an opening/closing cylinder, and 20 is a sliding cylinder.

Claims (1)

[Scope of utility model registration request] In an interstand edger that performs width reduction rolling of thin strip, a plurality of pairs of presser rolls are arranged in the line direction in the gap between hard rolls so as to sandwich the strip advancing line from above and below, and each presser roll is Further above and below the roll, there are arranged frames whose downstream ends in the line direction are pivotally connected to the fixing member so as to be rotatable in the vertical direction, and each of the frames is provided with a pressing device to hold the presser roll in the line direction. An inter-stand edger characterized by being movably supported.