JPH10286623A - Device for changing width of roller in wide-frange shape steel roller straitener and changing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely confirm the clutch-on only by attaching a simple means, by driving or stopping a motor for shaking to the normal or the reverse and the natural position with a three-positional type solenoid valve fitted to the shaking shaft of a shaking clamper and detecting the shaking angle with a sensor. SOLUTION: The clamper 1 is moved obliquely by working the shaking motor 6. The three-positional type solenoid valve 9 is positioned to the normal rotation side so as to flow oil to the shaking motor 6. The clamper 1 is pushed downward to the rear end part of a clutch lever 2 and a spring 3 becomes under compressing state and the upward force works at the tip part of the clamper, and an engage part 4 is taken out from the clutch 5 and becomes off-condition and a movable roller 13 can be shifted. A driving shaft 8 is rotated with another motor and the position of the movable roller 13 is changed to a prescribed position on a sleeve 16 of the driving shaft 8. The solenoid valve 9 is changed over to the neutral position and a working torque from the shaking motor 6 to the clamp 1 is stopped. The shaking angle is detected with the sensor 7 and in the case the shaking angle exceeds a threshold value, the clutch becomes on-condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for changing a roller width of an H-section steel roller straightening machine.

[0002]

2. Description of the Related Art In order to correct the shape of a rolled H-section steel, the H-section steel (hereinafter simply referred to as a section steel) 12 is passed through a group of rollers 11 arranged in a staggered manner in the longitudinal direction and repeatedly bent. It is done by giving. Normally, the number of rollers 11 used is 7 to 9 as shown in FIG.
Also, in order to eliminate the difference in shape in the width direction of the shaped steel 12, a so-called double-sided roller straightening machine (see FIG. 4) supporting both ends of a roller shaft (hereinafter referred to as a drive shaft 8) is generally used. Became.

In order to perform roll chance-free (roller width can be freely changed without replacing the roller) with such a double-sided roller straightening machine (hereinafter, straightening machine), the straightening machine needs to be provided. It is necessary to incorporate a roller width changing device. For example, a straightening machine having a roller width changing device as shown in FIG. 5 has been proposed. The roller width changing device of this straightening machine includes a fixed roller 14 attached to a sleeve externally fitted to the drive shaft 8, a movable roller 13 moving on the sleeve 16 in the roller width direction, and the movable roller 13 16 and a clutch means for positioning and fixing. The clutch means is provided with the sleeve 16
And a clutch lever 2 (also referred to as a rod pin) which is attached to the movable roller 13 and has a meshing portion 4 (inner blade) which meshes with the gear clutch 5. I have. Further, the clutch lever 2
Is provided with a swinging clamper 1 (hereinafter, simply referred to as a clamper) for releasing the meshing state with the spring 3 for urging the meshing portion 4 in the meshing direction.

The roller width changing device operates as follows. First, the clamper 1 attached to a bearing housing (not shown) at the end of the drive shaft 8 where the drive means is not provided.
Then, the rear end side of the clutch lever 2 is pressed downward, and the engaging portion 4 (inner blade) constituting the front end of the lever 2 is lifted up.
The clutch of the means for connecting the movable roller 13 to the sleeve 16 (formed of the gear clutch and the meshing portion) is disengaged, and the movable roller 13 is movable along the drive shaft 8. Then, in the screw portion 15 fixed to the movable roller 13, the driving shaft 8 is provided by a separately provided driving means (not shown).
Is rotated to move the movable roller 13, and the distance (width) between the fixed roller 14 and the movable roller 13 is set to a target value. After the movable roller 13 is fixed at that position, the pressing of the rear end side of the clutch lever 2 by the clamper 1 is released, and the force of the spring 3 built in the lower surface near the rear end of the clutch lever 2 releases the clutch. -Return the lever 2 to the original position, engage the tip engagement portion 4 with the gear clutch 5, and connect the clutch. As a result, the sleeve 16 of the drive shaft 8 and the rollers 13 and 14 can be integrally rotated.
The operation of the straightening machine is restarted.

However, such a straightening machine has a problem that it is structurally difficult to check the "disengaged" or "engaged" state of the clutch. That is, (1) Even if the position detecting sensor 7 is incorporated inside the roller width changing device, the drive shaft 8 and the roller width changing device rotate together, so that wiring for the sensor 7 becomes difficult. (2) When the non-contact type sensor 7 is arranged outside the roller width changing device, as shown in FIG. 5, during the change of the roller width, the sensor 7 is retracted from the straightening machine, and after the roller width is set, the sensor 7 is retreated. It is necessary to move the clutch lever 2 to a checkable distance above the clutch lever 2. For this reason, it is necessary to provide a special elevating means for the sensor 7, and the straightening machine has a complicated structure.

[0006]

SUMMARY OF THE INVENTION In view of such circumstances, the present invention makes it possible to easily and surely check the "engagement" of the clutch simply by adding simple means without greatly modifying the device currently in use. It is an object of the present invention to provide an apparatus and a method for changing a roller width of an H-shaped steel roller straightening machine.

[0007]

According to the present invention, there is provided a stationary roller mounted on a sleeve externally fitted to a drive shaft, a movable roller moving on the sleeve in a roller width direction, and a movable roller. Clutch means for positioning and fixing a roller to the sleeve; a clutch means attached to the sleeve; and a clutch lever attached to the movable roller side and having a meshing portion meshed with the gear clutch. The clutch lever includes a swinging clamper that disengages from a spring that urges a meshing portion in a meshing direction. A three-position solenoid valve for driving or stopping a swing motor attached to one end of a swing shaft in a forward / reverse and neutral direction, and a sensor for detecting a swing angle are provided at the other end of the swing shaft. It is a roller width changing device of the H-shaped steel roller straightener characterized by.

Further, the present invention sets a threshold value for the swing angle, and determines that the clutch is engaged when the swing angle detected after the solenoid valve is set to the neutral position exceeds the threshold value. This is a method of changing the roller width of the H-shaped steel roller straightening machine, characterized by making a judgment. According to the present invention, the so-called "engagement" or "disengagement" of the clutch formed by the tip meshing portion of the clutch lever attached to the movable roller side and the gear clutch attached to the sleeve side is performed by the swing shaft of the clamper. Can be easily confirmed by the information from the swing angle detecting sensor attached to one end of the sensor. As a result, erroneous operation of the straightening machine is reduced, and stable operation is ensured.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show H according to the present invention.
4 shows a roller width changing device of a shape roller straightening machine. The rotation of the drive shaft 8 was stopped because the size of the section steel 12 being straightened was changed and the roller width had to be changed. In this state, the clutch is still engaged, and the movable roller 13 cannot move. Then, the swing motor 6 of the clamper 1 was operated to tilt the clamper 1. FIG.
(B) shows that the three-position type solenoid valve 9 is operating so that oil flows to the swing motor 6. That is, the solenoid valve 9 is located on the normal rotation side (← in the figure is the direction in which oil flows). Thereby, the clamper 1
Pushes the rear end of the clutch lever 2 downward, the spring 3 attached to the lower surface of the clamp lever 2 is in a compressed state, and an upward force acts on the distal end.
Get out of clutch 5. The so-called clutch is in the “disengaged” state, and the movable roller 13 can be moved.

Next, the drive shaft 8 is rotated by a separately provided hydraulic motor, and the screw portion 1 fixed to the movable roller 13 is rotated.
5 to change the position of the movable roller 13 to a predetermined position on the sleeve 16 attached to the drive shaft 8. When the position change is completed, the three-position solenoid valve 9 that supplies oil to the swing motor 6 is switched to the neutral position, and the operating torque from the swing motor 6 to the clamper 1 is cut off. As a result, the spring 3 that has been in a compressed state expands, and the rear end of the clamper 1 rises via the clutch lever 2. This state is shown in FIGS. 2A and 2B, in which the meshing portion 4 at the tip of the clutch lever 2 is conversely lowered and falls between the blades of the gear clutch 5. The swing angle of the clamper 1 at this time is detected by the sensor 7 and compared with a predetermined threshold value. Note that this threshold value is determined in a state where the meshing portion 4 at the tip of the clutch lever 2 is completely fitted into the gear clutch 5. Therefore, when the swing angle exceeds the threshold value, it is completely engaged (the clutch is "engaged"). Then, since the sleeve 16 attached to the drive shaft 8 has been restored so as to rotate together with the movable roller 13, the drive shaft 8 is rotated to start shape correction of the shaped steel 12 after the size change. Note that the threshold value may be set appropriately, but is generally 3 to 5 degrees.

[0011]

As described above, according to the present invention, the swing angle of the clamper can be detected and the so-called "engaged" state of the clutch can be confirmed by a simple modification of the straightening machine currently used. It became so. As a result, the work of changing the roller width has become quicker, and there has been no erroneous operation of the straightening machine.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams illustrating a roller width changing device according to the present invention during changing a roller width, wherein FIG. 1A is a longitudinal section showing the entire lower roller portion of a straightening machine, and FIG. FIG.

FIGS. 2A and 2B are views for explaining a state after the roller width is changed by the roller width changing device according to the present invention. FIG. 2A is a longitudinal section showing the entire lower side of the straightening machine, and FIG. It is a top view showing a state.

FIG. 3 is a schematic diagram showing an arrangement of rollers in a roller straightening machine.

FIG. 4 is a side view showing a two-sided roller straightening machine.

FIG. 5 is a longitudinal sectional view illustrating a roller width changing device of a lower roller portion of the straightening machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oscillating clamper (clamper) 2 Clutch lever 3 Spring built into clutch lever 4 Mesh at the tip of clutch lever (inner blade) 5 Gear clutch 6 Oscillating motor 7 Sensor 8 Drive shaft (roller shaft) 9 3 Position type solenoid valve 11 Roller 12 H-section steel (shape steel) 13 Movable roller 14 Fixed roller 15 Screw part (used for moving the position of the movable roller) 16 Sleeve

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toyohisa Tokuhisa 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi (No address) Inside Mizushima Works, Kawasaki Steel Corporation (72) Inventor Sumihiko Ito 1-chome, Mizushima-Kawasaki-dori, Kurashiki None) Inside Kawasaki Steel Corporation Mizushima Works (72) Inventor Toru Takeuchi 1-chome, Kawasaki-dori, Mizushima Kurashiki-shi (No address) Inside Mizushima Works, Kawasaki Steel Corporation

Claims (2)

[Claims] A fixed roller attached to a sleeve externally fitted to a drive shaft, a movable roller moving on the sleeve in a roller width direction, and clutch means for positioning and fixing the movable roller to the sleeve. The clutch means
A gear clutch attached to the sleeve, and a clutch lever attached to the movable roller side and having a meshing portion that meshes with the gear clutch, the clutch lever includes:
In a roller width changing device for an H-shaped steel roller straightening machine, comprising a swinging clamper for disengaging a spring for urging a meshing portion in a meshing direction, a swinging clamper attached to one end of a swinging shaft of the swinging clamper. A three-position solenoid valve for driving or stopping a motor in a forward / reverse direction and a neutral position, and a sensor for detecting a swing angle at the other end of the swing shaft. Roller width changing device. 2. A method according to claim 1, wherein a threshold value is set for the swing angle, and when the swing angle detected after setting the solenoid valve to the neutral position exceeds the threshold value, it is determined that the clutch is engaged. A method for changing a roller width of an H-shaped steel roller straightening machine.