JPS62158526A - Straightening machine for shape steel - Google Patents

Abstract

PURPOSE:To perform the straightening of a shape steel with good accuracy by driving by rotating with separate motor via a speed reducing mechanism respectively each roll line composed of the plural upper and lower rolls and right and left plural rolls which are arranged alternately at the necessary pitch. CONSTITUTION:The straightening machine provides with the horizontal straightening roll line composed of the right and left rolls 4, 5 provided at the alternate position at the prescribed pitch and the vertical straightening roll line 7 composed of the upper and lower rolls in the similar arrangement. Each roll line is driven by turning it by geared motors 40, 41 respectively via a speed reducing mechanism and plural right and left rolls 4, 5 and the upper and lower rolls are controlled so that the respective peripheral speed becomes the same. When a shape steel 2 is fed between rolls 4, 5 by the preceding stage pinching roll 3, and shape steel 2 is straightened with good precision corresponding to the stroke in the progressing direction between the rolls 4, 5 the pitch of which is reduced gradually. In this way the straightening machine having sufficient straightening effect for shape steel is obtd.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a straightening machine for straightening bent steel sections.

"Prior Art" In a conventional straightening machine, only one side of the upper and lower rolls and the left and right rolls are driven to rotate. In addition, in conventional straightening machines, by moving only one side of the upper and lower rolls and one side of the left and right rolls, the gaps between the upper and lower, left and right rolls can be adjusted. ! It had been. Furthermore, in conventional straightening machines, the diameters of the upper and lower rolls and the left and right rolls are the same from the entrance side to the exit side, and the shafts of the rolls are supported in a cantilevered manner.

In conventional straightening machines, the straightening effect is not sufficient due to slippage between the rolls and the shaped steel.
If the load for straightening is large, the shaped steel may deviate from the center line of the gap between the rolls and ride on the tail of the roll, or the cross-sectional shape of the shaped steel may change. When force is required, the correction effect is low.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problem, and its first purpose is to provide a straightening machine for section steel that has a sufficient straightening effect. The second objective is to provide a straightening machine in which the shaped steel does not ride on the rolls even when the load for straightening is large.

``Means for solving the problem -'' In order to achieve the first objective of the present invention, a plurality of upper and lower rolls are arranged alternately at a required pitch above and below the machine frame,
A plurality of left and right rolls which are arranged alternately at a required pitch on the left and right sides of the machine frame, an electric motor 1 that rotationally drives the plurality of upper and lower rolls through a reduction mechanism, and a plurality of rolls on the left and right. A straightening machine for a section steel is provided, which is characterized in that the speed reduction is reduced to four motions, each of which is rotationally driven through one mechanism.

According to the above-mentioned groove, driving force is transmitted to both the upper and lower rolls and the left and right rolls, and both of the upper and lower and left and right rolls are shaped. Since the straightening force is applied to the steel, the occurrence of slip between the roll and the shaped steel is prevented.

"Means for Solving the Problem Part 2" In order to achieve the second objective of the present invention, it is necessary to install a plurality of upper and lower rolls arranged alternately at a required pitch above and below the machine frame, and A gap adjustment mechanism is attached to both sides of a plurality of rolls, a plurality of left and right rolls are arranged alternately at the required pitch on the left and right sides of the machine frame, and a gap adjustment mechanism is attached to both of the plurality of rolls on the left and right. A gap! %I straightening groove mechanism comprises an electric motor that decelerates the plurality of upper and lower rolls through the grooves and rotates rIA1gJ, respectively, and an electric motor that rotates the plurality of left and right rolls through the deceleration mechanism. ``Action Part 2'' According to the above configuration, there is provided a straightening machine for shaped steel characterized by the following.
The gaps between the upper and lower, left and right rolls of the rolls are adjusted by having both the upper and lower, left and right rolls moving away from the same center line by the same Ifj H, so that the center line does not shift. .

"Embodiment" According to the first embodiment of the present invention, the pitch and diameter of the rolls are thicker on the entrance side (and larger on the exit side). A straightening machine for a shaped steel section is provided. According to this aspect, the pitch of the section steel that is straightened by passing between the upper and lower and left and right rolls gradually becomes smaller as the straightening progresses, and the amount of bending becomes smaller. Since the amount of correction is given, there is an advantage that the change in shape of the section steel is reduced.

According to a second embodiment of the present invention, there is provided a shape steel straightening machine in which the axes of the rolls are supported on both sides of the plurality of upper and lower rolls and/or the plurality of left and right rolls. According to this method, the axis of the roll does not undergo elastic deformation, and the roll does not come loose from the section steel, so there is an advantage that straightening efficiency is improved.

"Example" Next, an embodiment of the straightening machine of the present invention will be described with reference to the drawings.

As shown in FIG. 1, on the entrance side of the machine frame 1 of the straightening machine, two sets of left and right front pinch rolls 3 for pinching the shape wI2 are provided. In this embodiment, a horizontal straightening roll row consisting of five left rolls 4 and four right rolls 5 is arranged. vi Several left rolls 4 are the first, second,
The pitch between the third left roll 4 is relatively large and equal, and the pitch between the third left roll 4 and the fourth left roll 4 is relatively large and equal.
The pitch between the left eye rolls 4 is relatively small and equal. Also, double! &Nishiki's right rolls 5 are arranged so as to be alternately located between the left rolls 4, and between the 1st 8th, vJ 2nd, 3rd and 4th right rolls 5. The pitch is gradually becoming smaller. The diameters of the left roll 4 and right roll 5 are the same as those of the left and right rolls 4 on the entrance side.
5 has a large diameter, and the diameters of the left and right rolls 4.5 on the exit side are small, so that the diameters are slightly different.

An intermediate pinch roll 6 is provided at the rear end of the horizontal straightening roll row made up of a plurality of left and right rolls 4 and 5.

Further downstream of the intermediate pinch rolls 6 is a vertical straightening roll row arranged in the same manner as the horizontal roll row, consisting of three upper rolls and four lower rolls, which are not shown in FIG. A rear pinch roll 8 is provided on the exit side of the vertical straightening roll row 7.

The number of left rolls 4 can be adjusted in the amount of push into the shaped copper using a 31 adjustment handle 9, and the number of right rolls 5 can be adjusted in the amount of push into the shaped steel using an adjustment handle 10. .

The pushing amount of the left and right rolls 4.5 is adjusted so that it is large on the entrance side and becomes smaller toward the exit side.

Each roll of the vertical straightening roll row 7 is provided with an adjustment handle 11. A adjustment handle 9,1
A scale of 0.11 is engraved as a guide for determining the amount of push-in.

As shown in FIG.
The pushing amount can be adjusted as shown in "-". In FIG. 2, the positions of the adjustment handles 9 and 10 are shown rotated by 90". The shafts 14 and 15 of the left and right rolls 4.5 are supported at one end by needle bearings 16 and 17, and are rotated by 90". The other end of the drive side is supported by front roller bearings 18 and 19.As shown in FIG. 2, a coupling member 20 is fitted to the pongee 15 of the right roll 5, and the coupling One of the plurality of output shafts 31 of the reduction gear train 30 shown in FIG. 3 is fixedly fitted into the recess 21 of the member 20.

The plurality of output shafts 31 of the reduction gear train 30 are similarly coupled to the plurality of left and right rolls 4 and 5, respectively. The gear ratio of the reduction 1!1 vehicle train 30 is set according to the diameters of the left and right rolls 4, 5, so that the peripheral speeds of the plurality of left and right rolls 4.5 are the same. In addition, the reduction gear train 30
is operatively connected to the geared motor 40 shown in FIG. Each roll of the vertical straightening roll row 7 is connected to a guard motor 41 in the same manner.

(Operation) The operation of the above configuration will be explained using FIG. 4 TMS diagram and FIG. 6 together. As shown in FIG. 4, the left and right rolls 4.5 are provided with grooves 50 having a cross-sectional shape of filq2.
It is formed into a groove shape by symmetrically dividing steel sections such as ■-shape, angle, H-shape, and half-round. For the flat steel shape @2 shown in FIG.
0 is formed on the left and right rolls 4.5.

Therefore, when the shape W42 is fed between the left and right rolls 4 and 5 by the front pinch roll 3, the shape steel 2 moves forward as shown in FIG. Since the amount of
Also, FIG. 6(a).

As shown in (b), multiple left and right rolls 4. The pitch between -5 is gradually reduced, and the pushing amount P is also gradually reduced, so the stress S remaining in the shape fII42 is minute, and the bending is gradually reduced, so that the cross section of the shape w42 is The shape does not deform into a drum-shaped shape or the like, and the correction is performed with high precision.
In the initial bending stage using the plurality of left and right rolls 4°5, a large pushing amount P can be taken, so that a sufficient straightening effect can be achieved. Furthermore, since both the left roll 4 and the right roll 5 are driven and rotated by the rotational driving force of the eared motor 40, compared to the conventional case where either the left or right rolls 4, 5 are driven rolls, Since no slip occurs between the shaped steel 2 and the left and right rolls 4.5, the straightening effect is significantly increased.

When the width of the shaped steel 2 is changed, for example, in FIG. Since the center of the gap G between the rolls 4 and 5 is fixed, the center position of the section steel 2 does not shift, and the left and right rolls 4 and 5
Even if a large straightening load is applied to the shape @2, the center line of the shape a2 will not shift, and the shape steel 2 will be picked up by the left and right rolls 4, 5 and 51. There is no such thing.

As shown in FIG. 2, the left and right rolls 4.5 are supported on both sides by needle bearings 16.17 and front roller bearings 18.19. Since so-called relief, which is the elastic deformation to the left and right when pushed, does not occur, the load for straightening is completely transmitted to the section steel 2, and the straightening efficiency is improved.

A similar operation is performed for the vertical straightening roll row 7 as well.

"Effect" As described above, since the straightening machine of the present invention has the above configuration, it has a large straightening effect, and furthermore, when the load applied to the section steel for straightening is increased, the straightening machine of the present invention has a large straightening effect. It has excellent effects such as preventing it from riding on the top of the roll (it is well corrected).

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the straightening machine of the present invention, Fig. 2 is a cross-sectional view of the left and right rolls, Fig. 3 is a cross-sectional view showing the reduction tooth row slightly opened, and Fig. 4 is a cross-sectional view of the left and right rolls. Figure #15 is a graph showing the relationship between stroke and bending of 15g, Figure 6 (Q), (1+) is a graph showing the relationship between indentation amount and pitch, and schematic diagram 1...・Machine frame, 2...
・Shaped steel, 4...Left roll, 5...Right roll, 7...
・Vertical correction roll row, '), 10.1.1...Adjustment handle, 12.13...Connection bar tL14, 15...
fi, 16, 17...needle bearing, 18°1
9... Cylindrical roller bearing, 20... Coupling member, 3
0... Reduction gear train, 4.0.41... Geared motor.・飄；-( Agent Patent Attorney Isamu Goto ゛. ゛-1 Figure 4 Figure 6 (a) (b)

Claims (6)

[Claims] (1) A plurality of upper and lower rolls arranged alternately at the required pitch on the upper and lower sides of the machine frame, a plurality of left and right rolls arranged alternately at the required pitch on the left and right sides of the machine frame, and the above-mentioned upper and lower rolls. A straightening machine for shaped steel, comprising: an electric motor that rotationally drives each of the plurality of rolls via a deceleration mechanism; and an electric motor that rotationally drives each of the left and right rolls via a deceleration mechanism. (2) The pitch and diameter of the plurality of upper and lower rolls and/or the plurality of left and right rolls are larger on the entrance side and smaller on the exit side. shape steel straightening machine. (3) Straightening of the shaped steel according to claim 1 or 2, wherein the plurality of upper and lower rolls and/or the plurality of left and right rolls are supported with their shafts supported on both sides. Machine. (4) A plurality of upper and lower rolls arranged alternately at the required pitch on the upper and lower sides of the machine frame, a gap adjustment mechanism installed on both of the upper and lower rolls, and a gap adjustment mechanism installed on both the left and right sides of the machine frame. A plurality of left and right rolls arranged alternately with a pitch, a gap adjustment mechanism attached to both of the left and right rolls, and an electric motor that rotationally drives each of the upper and lower rolls via a speed reduction mechanism. A straightening machine for shaped steel, comprising: and an electric motor that rotates each of the left and right rolls via a speed reduction mechanism. (5) The pitch and diameter of the plurality of upper and lower rolls and/or the plurality of left and right rolls are larger on the entrance side and smaller on the exit side. shape steel straightening machine. (6) Straightening of the shaped steel according to claim 4 or 5, wherein the plurality of upper and lower rolls and/or the plurality of left and right rolls are supported with their shafts supported on both sides. Machine.