JPH0713846Y2 - Shaped steel straightening machine with variable roller width - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of a straightening machine for straightening the deformation of shaped steel,
More specifically, the present invention relates to a shaped steel straightening machine with a variable roller width that allows the roller width of the shaped steel straightening machine to be changed online and prevents an increase in equipment scale.

[Conventional technology]

The H-section steel rolled and formed by hot rolling will be described as an example. As shown in FIG. 4, there is a difference in thickness between the flange 1 and the web 2 of the H-section steel, and there is a temperature difference between the flange 1a and the flange 1b. Therefore, as shown in FIG. As shown in the figure, there is a difference in cooling rate between the flange 1 and the web 2, and bending (Fig. 6 (a)), warping (6 (b)), and rectangular deformation (6th) in a state of being cooled to room temperature.
Deformation such as (c)) occurs. It is necessary to rectify this state as it has no commercial value. As the straightener, generally, a roller straightener and a press straightener shown in FIGS. 3 (a) and 3 (b) are used. As shown in FIG. 3 (a), the roller straightening machine makes the inner surface of the flange of the H-section steel contact the side surface of the roller or makes a slight gap, and presses the web surface by the outer peripheral surface of the roller to form the H-section steel. The bending deformation is repeatedly applied in the longitudinal direction, and the deformation of the H-section steel is corrected while gradually reducing the bending deformation.

[Problems to be solved by the device]

In the conventional roller straightening machine, the inner width dimension of the H-section steel to be straightened
In order to match the width of the leveler roller with H _W according to H _W (FIG. 2), the gap between the first roller (fixed side roller) 6 and the second roller (moving side roller 7) should be changed. I had to change the width.

To change the width of the leveler roller, as shown in FIG. 2, the parent sleeve tightening nut 4 is removed and the parent sleeve 5 is removed, then the roller tightening nut 8 is removed, and the second roller 7 on the moving side is removed. After the removal, the widths of the screw structures 9 and 9a are adjusted to set the width of the leveler roller to a predetermined width.
After that, the second roller 7 is incorporated into the parent sleeve 5 and tightened with the roller tightening nut 8. When a large width change that exceeds the adjustment width of the screw structure 9, 9a is required, the screw structure 9,
Replace 9a. Further, after the parent sleeve 5 is assembled into the main shaft 3, the tightening work is completed with the parent sleeve tightening nut 4. The time required to change the roller width is 20 to 30 minutes each time. Although it depends on the size of the H-shaped steel to be produced and the rolling frequency, it is generally necessary about 50 times / month. Therefore, the time required to change the roller width is 1000
Approximately 1500 minutes / month, which hinders the operation, lowers productivity, and increases the amount of work for changing the roller width.

On the other hand, the H-shaped steel to be straightened is conventionally the inner width dimension of the flange.
A type with a constant H _{W and a} different flange thickness was generally used, but in recent years, a method for manufacturing H-section steel by rolling has been developed, and the outer width dimension H _{O of} the flange that was conventionally manufactured by welding assembly is constant. In this way, H-section steels having different inner width dimensions H _W have been manufactured by rolling. Such products are generally referred to as H-shaped steel with a constant outer rectangular shape, but this product has many types of flange thickness even with the same nominal dimensions, and the inner width dimension (= roller width dimension) H _W is Since it changes depending on the thickness of the flange, the frequency of changing the width of the roller is significantly increased compared to the conventional method. Therefore, there is a problem that the operation is obstructed and the productivity is further reduced, and the amount of work for changing the roller width is further increased.

Further, there is a drawback that a driving device is required for driving the first roller and the second roller separately, and a tuning device between the concentric rollers is required, resulting in high equipment cost.

The present invention has been proposed in order to solve the above-mentioned problems, and makes it possible to change the width of the leveler roller without lowering the productivity, and at the same time, to correct the shaped steel straightening of the roller width that prevents an increase in equipment cost. The challenge is to provide machines.

[Means for Solving the Problems]

INDUSTRIAL APPLICABILITY The present invention is applied to a shaped steel straightening machine having a leveler roller composed of first and second rollers which are concentric and have the same outer diameter and which are arranged in parallel.
The following technical measures were taken.

A main shaft that rotationally drives the first and second rollers, a sleeve that is externally fitted to the main shaft and covers the first and second rollers, a pin that fixes the sleeve to the main shaft, and a sleeve that is fixed to the sleeve with a tightening nut. A first roller, a piston rod slidably extending through the main shaft about the same axis as the main shaft, and one end fixed to the piston rod and externally fitted on one end side of the sleeve in the axial direction of the main shaft. A slide sleeve that can reciprocate, a second roller screwed to the slide sleeve, a coupling key that transmits the drive torque of the spindle to the sleeve, and a spindle shaft of the slide sleeve that transmits the drive torque of the sleeve to the slide sleeve. A key for guiding the directional movement and a drive device for reciprocating the piston rod were provided.

[Action]

Since the present invention is constructed as described above, according to the inside width dimension H _W H-shaped steel is corrected easily first roller and a second
It is possible to change the distance between the rollers (width of the leveler rollers) by online remote control. Therefore, even if the inner width dimension H _W of the H-shaped steel to be straightened changes frequently, the work of changing the roller width of the straightening machine will not hinder the operation and reduce the productivity. It is possible to relieve the work of changing the width of the roller by changing the combination of the rollers and assembling.

〔Example〕

An embodiment of the present invention will be described with reference to FIG. 1 (a) is a front sectional view, and FIG. 1 (b) is a sectional view taken along the line AA of FIG. 1 (a).

As shown in FIG. 3, the shaped steel roller straightening machine is composed of upper and lower straightening rollers, and FIG. 1 (a) shows an upper straightening machine. 10 is the first roller (fixed side roller) 6a, the second
Is a main shaft that rotationally drives the roller (moving side roller) 7a, and the main shaft 10 is attached to the straightening machine frames 14 and 15 via bearings 11, 12 and 13. Spindle 10 has a spindle
A first roller 6a and a second roller which are fitted onto
A sleeve 16 that covers 7a is provided, and the first and second rollers have a structure that is movable on the sleeve 16 in the axial direction. The sleeve 16 is fixed to the main shaft 10 by a pin 17 in order to prevent the sleeve 16 from moving in the axial direction.

A piston rod 19 is slidably mounted on the main shaft 10 through the bush 18 so as to be slidable on the same axis as the main shaft 10.
A slide sleeve 20, which is fitted onto one end of the sleeve 16 and is capable of reciprocating in the axial direction of the main shaft 10, is fixed by a nut 21 at one end thereof, and the other end of the slide sleeve 20 serves as a second roller 7a. The second roller 7a is connected by a screw 22 so that the second roller 7a can move on the sleeve 16. Also the first roller
6a is fixed to the sleeve 16 with a tightening nut 23.

Further, a coupling key 24 is provided for transmitting the drive torque of the main shaft 10 to the sleeve 16, and further transmits the drive torque of the sleeve 16 to the slide sleeve 20 and also causes the slide sleeve 20 and the second roller 7a to move in the main shaft axial direction. A key 25 is provided to act as a guide when moving. The number of these keys 24 and 25 required to be inserted to withstand the shear stress between the main shaft 10, the sleeve 16 and the slide sleeve 20 is determined, but the point is that the drive torque of the main shaft 10 is sufficient. It must be transmitted to the second roller 7a. The dotted line in FIG. 1 (b) shows an example in which a plurality of keys 24 and 25 are provided.

Further, the piston rod 19 for moving the second roller 7a according to the inner width dimension H _W of the H-shaped steel is mounted on the frame 15 with a bearing cover.
A slide bearing box 30 which is held on a frame 27 fixed via 26 and which has a spacer 28, a bearing 29 and a mounting nut 34 built therein for driving the piston rod 19.
And a cylinder that moves the slide bearing box 30 in the spindle axis direction
31 is attached to the slide bearing box 30 via a pin 32 and a fork 33.

The cylinder 31 may be either electric or hydraulic.

Next, an operation of changing the distance between the first roller 6a and the second roller 7a will be described.

In Fig. 1, straightening of H-section steel with inner width H _W
When the inner width dimension of the next H-shaped steel to be straightened is (H _W + ΔW), the slide bearing box 30 is moved by the cylinder 31 in the arrow direction by ΔW according to an instruction from the host computer. Therefore, the second roller 7a moves by ΔW via the piston rod 19 and the slide sleeve 20, and the predetermined distance (H _W + ΔW) can be set between the first and second rollers. The interval L in the figure does not change.

The movement amount ΔW of the slide bearing box 30 is detected and confirmed by a position detection device (not shown), and the movement amount as instructed by the computer is obtained.

According to the present invention, it is possible to change the inner width dimension of the H-section steel online by remote control, which has been shortened to a few seconds from 20 to 30 minutes per time conventionally.

[Effect of device]

 The present invention has the following excellent effects.

Conventionally, changing the rollers according to the inner width of H-section steel,
It is necessary to change the roller width by assembling, and there are many types of flange thickness even with the same nominal size in H-shaped steel with a constant outer rectangular shape. Reassembling the rollers according to the flange thickness, and changing the roller width by assembling. Had to be carried out frequently. The present invention enables these operations to be performed by online remote control. Therefore, the lost time due to these operations can be eliminated and the productivity can be improved.

Workers will be freed from the conventional work of changing rollers and changing the width of rollers due to assembly.

Since a drive device for separately driving the first roller and the second roller is not required, the equipment cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention. FIG. 1 (a) is a front sectional view, FIG. 1 (b) is a sectional view taken along the line AA of FIG. 1 (a), FIG. 2 is an explanatory view of a conventional example showing a front sectional view, FIG. 3 (a) is an explanatory view of a straightening action of a roller straightening machine, and FIG. 3 (b) is an explanatory view of a straightening action of a press straightening machine, FIG. 4 is a sectional view of the H-section steel, FIG. 5 is a cooling curve of the H-section steel, FIG. 6 (a) is bent, and FIG.
Drawing (c) is an explanatory view of a modification of section steel which shows perpendicular deformation. 6a …… first roller, 7a …… second roller 10 …… spindle 11,12,13 …… bearing 14,15 …… frame, 16 …… sleeve 17 …… pin, 18 …… bush 19 …… Piston rod, 20 …… Slide sleeve 21 …… Nut, 22 …… Screw 23 …… Tightening nut, 24 …… Key 25 …… Key, 26 …… Bearing cover 27 …… Frame, 28 …… Spacer 29 …… Bearing, 30 ... Bearing box 31 ... Cylinder, 32 ... Pin 33 ... Fork, 34 ... Nut H _W …… Inner width dimension H _O …… Outer width dimension H _O L, ΔW …… Length

Claims (1)

[Scope of utility model registration request] 1. A shaped steel straightening machine equipped with a leveler roller comprising first and second rollers, which are concentric and have the same outer diameter and are arranged in parallel, in a main shaft for rotationally driving the first and second rollers, and the main shaft. A sleeve that is externally fitted and that covers the first and second rollers, a pin that fixes the sleeve to the main shaft, the first roller that is fixed to the sleeve with a tightening nut, and the main shaft that is attached to the main shaft. And a piston rod slidably extending through the same axis, and a slide sleeve having one end fixed to the piston rod and externally fitted to one end of the sleeve so as to reciprocate in the axial direction of the main shaft. A second key screwed to the slide sleeve, a coupling key for transmitting the drive torque of the main shaft to the sleeve, and a drive key for transmitting the drive torque of the sleeve to the slide sleeve. A shaped steel straightening machine with a variable roller width, comprising a key for guiding the movement of the sleeve in the axial direction of the spindle, and a drive device for reciprocally driving the piston rod.