JPH06106244A - Method and device for smoothing h-type deformed beam material - Google Patents

Abstract

PURPOSE: To provide a staightening method, with which particularly, a heavy and large wide flange shape deformed beam can be straightened with a continuous operation, and a device therefor. CONSTITUTION: In the straightening method of particularly, the heavy and large wide flange shape deformed beam, between tools shiftable in the vertical direction disposed at the upper part and the lower part in the straighting line, when the flange parts in the deformed beam are rolled, the continuous driving can be achieved. For the straightening rolling, the straightening roll set 1 is provided with the rolls 8, 9, 13-16 having different lengths 11, 17 of the roll barrel parts, and the roll reductions are applied to the flanges 3 of the deformed beam 2 with these rolls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for straightening a particularly heavy and large H-shaped profile beam between vertically movable tools arranged above and below the straightening line. Regarding

[0002]

Heavy profiles or beams are usually straightened by bending at curved points. For that purpose, first of all, it is a prerequisite to visually grasp the curve. The profile is then bent against the curve between the three dies in a suitable squeeze machine. This bending is performed until there is no curve, that is, until the profile has a straight shape. During operation of the straightening machine used for this purpose, the operator decides the use of the die and the stroke of the die based on his experience.

The above-mentioned working method requires a skilled operator when deciding a heavy profile, and the result of the habit elimination depends on the ability of the operator. Therefore, the time required to straighten the profile depends not only on the curved state of the profile but also on the experience of the operator. In addition, the straightening machine operated as described above is difficult to use for continuous production. This presupposes a sufficiently long time interval or interim storage between the individual profiles fed to the straightening machine. In that case, firstly, there is a drawback that the utilization rate of the straightening machine is low, and secondly that there is an additional need for a storage place.

Unlike the above-mentioned straightening press, other known roller type straightening machines which guarantee continuous operation are simple in operation for straightening. In the case of roller straightening, a change or increase in the height of the profile is unavoidable due to the process during plastic deformation. In the case of an H-shaped profile beam cross-section consisting of two flange faces and one web face, a web with a much smaller resistance moment than both flanges is necessary for the deformation of the entire cross-section. You must accept the force. As a result, the stressed portions of the web are more likely to plasticize than the flanges, increasing the height of the profile beam and causing the web to bulge in the roller area. Reaching the breaking stress of the material at extremely high stresses can result in significant erection errors between the web and the flange. Since the risk of breakage can be known by increasing the height of the profiled beam, a sampling inspection measurement must always be performed during operation. Especially in the case of heavy profile beams with a large flange-web-ratio, the operation of a roller-type straightening machine is undesired and therefore only discontinuous operation is possible, thus achieving the capability of a roller-type straightening machine. An improper squeeze press is used.

[0005]

SUMMARY OF THE INVENTION The problem underlying the present invention is to eliminate the above-mentioned drawbacks, and in particular a method and a device by which heavy and large H-shaped profiled beams can be straightened in continuous operation. Is to provide.

[0006]

This problem is solved by rolling a profiled beam flange. The straightening performed in this way-where the roll contacts only the profile beam flange or only part of the profile beam flange-removes the curve by reducing the flange thickness and stretching the flange. It is based on the consideration of doing.

Therefore, the straightening roll adjusted to the height of the profile beam supports the profile beam through the outer flange surface, and the straightening roll inserted into the chamber of the profile beam from the right side and the left side of the profile roll It is proposed that the flange face be rolled down. For example, if the profiled beam is bent across the web-upward or downwardly curving-the short flange is thinned and extended by the rolls that surround it. On the other hand, if the profiled beam is curved across the flange-curving to the left or to the right-and by lowering the associated chamber roll, the left or right upper and lower flanges are extended until the curve is removed. To be

When the measurement data indicating the curved state of the deformed beam material obtained by the measuring means is supplied to the evaluation unit, the flange range to be deformed, the rolling rate and the roll reduction are determined from the measurement data. Which is advantageous for fully continuous production.

In order to straighten a heavy H-shaped beam, the straightening roll set comprises rolls having different roll cylinder lengths which are pressed down on the flanges of the beam. A straightening roll set with at least three roll pairs capable of vertical reduction is recommended. One of the three roll pairs has a longer roll barrel length than the other roll pair, and the profile beam is supported by the upper and lower rolls via the outer flange surface, A pair of rolls having a short roll length are inserted into the chamber of the profiled beam from the right and left sides and applied to the inner flange surface of the profiled beam. In the case of a straightening roll set with three pairs of rolls, and thus six rolls, rolls with a large roll cylinder length located on the outside support the profiled beam from above and below and from both sides A pair of rolls having a short roll length, inserted in the chamber of material, is arranged between the upper and lower long rolls. The chamber rolls are separated from each other by the profile beam webs that do not contact it and only contact the inner flange face or part thereof.
Both rolls provided in one chamber of the profiled beam form a roll pair.

The roll pairs or the rolls can be arranged in different ways. In the case of a large-sized beam member, they are arranged side by side in a row, especially in the vertical direction. The upper roll and the lower roll are placed offset from each other when there is a need to place the straightening roll set or the flattening rolls in a tight fit due to the chamber size of the profile beam which is not too large, and the short rolls adjacent to it. The pair of rolls each having a roll cylinder length are arranged in a line in the vertical direction.

In the case of smaller chamber dimensions, the rolls of a roll pair having a short roll cylinder length are arranged overlapping one another in a vertical plane, in which case they are pushed away from the axis of symmetry or straightening of the profile beam. Has been.

The arrangement in which the chamber rolls overlap each other in a vertical plane is such that at least two lower or upper rolls and at least one upper or lower roll have a short roll length attached to them. It makes it possible to form a set of straightening rolls with a roll having a thickness.

If at least one curve sensor is provided in front of the set of curling rolls and the curve sensor is connected to the roll reduction device via the evaluation unit, the eccentricity is reduced by reducing the thickness of the flange each time. The rolls used for taking are already adjusted to the measured values before they enter the curve.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments schematically shown in the drawings.

The straightening roll set for the heavy H-shaped beam 2 supported on a stand (not shown) of the straightening unit, that is, the straightening unit, comprises three pairs of rolls 5 arranged one above the other. It consists of 6 and 7. The H-shaped profiled beam has a large volume chamber 4 between the flanges 3 of the profiled beam 2 according to FIGS. Roll body length 11 of the upper and lower rolls 8 and 9 of the roll pair 5
Is a chamber roll 1 of roll pairs 6 or 7 on the left or right side of the profiled beam web 12, provided in the chamber 4 of the profiled beam 2 on the right and left sides of the profiled beam web 12.
It is longer than the roll cylinder length of 3, 14 or 15, 16. The roll cylinder length 17 of the chamber rolls 13 to 16 is set so that the end of the chamber roll is slightly separated from the profile beam web 12 and does not contact the profile beam web.

6 rolls 8 which can be vertically lowered,
In order to straighten the curve (not shown) of the profiled beam 2 by means of a straightening roll set 1 with three roll pairs 5, 6, 7 having 9, 13, 16 long roll cylinder lengths 1
The rolls 8 and 9 of the roll pair 5 having 1 are adjusted to the height position of the profile beam 2. This roll supports the deformed beam 2 from the upper side and the lower side via the outer flange surface. Roll pairs 6,7 with chamber rolls 13,14 or 15,16 having a short roll length 17 are inserted into the chamber 4 of the profile beam on the left and right sides. This pair of rolls contacts only the inner flange surface of the profiled beam 2.

As shown in FIG. 5 simply by a black box, a curve sensor 18 is provided in front of the straightening roll set 1, and the curve sensor is electrically connected to an evaluation unit 21 connected to a roll reduction device 19. It is connected. Deformed beam 2 obtained from the curve sensor 18
The measurement data regarding the curve state of the
The evaluation unit detects the flange range to be deformed and the magnitude of the rolling rate and applies a corresponding adjustment signal to the roll reduction device 19. This roll reduction device reduces the corresponding chamber roll against the inner flange surface. This is necessary in order to reduce the thickness of the flange 3 of the deformed beam 2 which is shorter due to the curve together with the upper and lower rolls 8 and 9 and to extend until the curve is removed. is there. For example, in the case of a profiled beam 2 that curves downwards via a web 12, the shorter flange is rolled by the chamber roll 13 or 15 and the upper roll 8 of the roll pair 6 or 7. At that time, the chamber roll is pressed down to the inner flange surface.

3 and 4 show the arrangement of the straightening roll sets 101, 201 for the profiled beams 102, 202. This profiled beam is smaller in size than the profiled beam 2 of FIGS. 1 and 2, and the volume or size of the chambers 104, 204 formed between the flanges on the right and left sides of the web is correspondingly reduced. There is. In order to enable the straightening rolling even in the case of this deformed beam material, the straightening roll sets 101 or 201 are provided so as to be squeezed together in the height direction. In particular, the roll pairs are no longer arranged one above the other. In the case of the embodiment of FIG.
The upper roll 108 and the lower roll 109 are displaced from each other, and are adjacent to the chamber rolls 113,
114 or 115 and 116 are arranged in a line in the vertical direction. Both chamber rolls 115, 116 are located on the other side of the profiled beam web and are not visible in this view. The chamber rolls 113, 114 and the invisible chamber rolls 115, 116 further overlap in the vertical plane. That is, these chamber rolls are deviated upward or downward from the longitudinal symmetry axis of the deformed beam member 102 that overlaps with the straightening line 22. Deformed beam 102 or 2
Despite the low structural height between the 02 flanges,
Based on the horizontal and vertical shifts of the roll, the chamber 10 is provided with a straightening roll having a sufficiently large diameter.
4 or 204.

The modified embodiment of the straightening roll set 201 shown in FIG. 4 is different from the roll device of FIG. 3 only in that a roll group is arranged on the front side in the passage direction 24 of the deformed beam member 202. This roll group is
Another roll 25 having a long roll cylinder length 11 which is applied to the outer flange surface of 2 from below and a roll 25 which is inserted into both chambers 204 on the right and left sides of the profile beam web.
And a chamber roll 26 attached to the.

When the shaped beam member 202 passes through the roll group, the lower flange 27 and the upper flange 28 are alternately stretched and expanded. This draw stretching decreases from roll group to roll group. This allows
A desired residual stress can be obtained. The other roll groups 25/26 can be continued alternately at the upper flange 28 and the lower flange 27 to further reduce the residual stress.

An advantageous structure of the method and apparatus for straightening a deformed beam according to the present invention is as follows.

1. The straightening roll adjusted to the height of the profile beam supports the profile beam through the outer flange surface,
A straightening method characterized in that the straightening rolls inserted into the chamber of the profiled beam from the right side and the left side are pressed down to the inner flange surface.

2. The straightening method according to the above-mentioned item 1, characterized in that the measurement data indicating the curved state of the deformed beam material obtained by the measuring means is supplied to the evaluation unit.

3. One of the at least three vertically rollable pairs 5, 6, 7 has a longer roll cylinder length 11 than the other roll pair 6, 7;
The profile beam 2 is supported by the upper and lower rolls 8 and 9 via the outer flange surface, and the roll pairs 6 and 7 having the short roll body length 17 are arranged from the right side and the left side of the chamber 4 of the profile beam 2. The straightening device, which is inserted into the inner surface of the deformed beam member 2 and is applied to the inner flange surface of the deformed beam member 2.

4. The above-mentioned third feature that the roll pairs 5, 6 or 5, 7 are arranged vertically in a line.
Paradox removal device.

5. The upper rolls 108, 208 and the lower rolls 109, 209 are arranged offset from each other and arranged vertically in line with the rolls 113, 114 or 115, 116 of a roll pair adjacent thereto and having a short roll cylinder length 17. The straightening device according to the above-mentioned item 3 or item 4, which is characterized by being provided.

6. A pair of rolls 113, 114 or 115, 116; 21 having a short roll length 17
3. The straightening device of item 5 above, wherein 3,214 or 215,216 are arranged in a vertical plane so as to overlap each other.

7. At least two lower or upper rolls 209,26 and at least one upper or lower roll 208 have rolls 213,214 or 215,216,2 with a short roll cylinder length attached thereto.
5. The straightening device according to the above item 5 or 6, wherein the straightening roll set 201 is formed together with the straightening roll 5.

8. Curling roll set 1,101,201
At least one curve sensor 18 is provided in front of the above, the straightening device according to any one of the above items 3 to 7.

9. The curve sensor 18 is an evaluation unit 21.
The straightening device according to the above item 10, which is connected to the roll reduction device 19 via a.

[0031]

As described above, the method and apparatus of the present invention have the advantage that the heavy and large H-shaped deformed beam can be removed by continuous operation.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a straightening roll set used for a deformed beam member having large-sized chambers on the right side and the left side of a web.

2 is a side view of the straightening roll set of FIG. 1. FIG.

FIG. 3 is a side view of a first straightening roll apparatus having horizontally offset rolls for straightening out a beam having a small size chamber, the chamber rolls overlapping in a vertical plane. It is a figure.

FIG. 4 shows a second straightening roll device with horizontally offset rolls for straightening out beam with small size chambers, with chamber rolls overlapping in a vertical plane. It is a figure.

FIG. 5 is a diagram showing the straightening roll device of FIG. 2 provided with a front-facing curve sensor connected to the roll reduction device via an evaluation unit.

[Explanation of symbols]

1, 101, 201 Curling roll set 2 Deformed beam member 4 Chamber 5, 6, 7 Roll pair 8, 9, 13-16, 108, 109, 113-11
6,208,209,213-216,25,26
Roll 11,17 Roll body length 18 Curve sensor 19 Roll reduction device 21 Evaluation unit

Front page continuation (72) Inventor Holst Gertner Germany Day 4000 Düsseldorf Auchum Grossenfeld 4 (72) Inventor Friedrich Holmann Federal Republic of Germany Day 4048 Greifenbrüich Muenchler Strasse 9

Claims (2)

[Claims] In a method for straightening a particularly heavy H-shaped profile beam between vertically movable tools arranged above and below the straightening line, the flange of the profile beam is rolled. A method of curving an H-shaped deformed beam material, which is characterized in that 2. A set of straightening rolls (1, 101) in a device for straightening a particularly heavy H-shaped deformed beam between vertically movable tools arranged above and below the straightening line. , 201) with different roll cylinder lengths (11,
17) having rolls (8, 9, 13 to 16, 108,
109, 113-116, 208, 209, 213-2
16; 25, 26), wherein the roll is pressed against the flange (3) of the profiled beam (2, 102, 202) to straighten the H-shaped profiled beam.