JP7319672B2 - gas cutting equipment for steel plate - Google Patents

Description

The present invention relates to a steel plate gas cutting apparatus for gas cutting a steel plate to be cut.

As a steel plate gas cutting device, it is arranged above the steel plate to be cut along the width direction of the steel plate to be cut, and can run along the rail arranged in the longitudinal direction of the steel plate to be cut, that is, along the running direction. There is known one that includes a traveling frame and a gas torch that can move in the direction along the longitudinal direction of the traveling frame, that is, in the transverse direction (for example, Patent Document 1).
However, in such a steel plate gas cutting apparatus, the gap between the traveling frame and the rail inevitably increases with the passage of time. If the gap between the traveling frame and the rail becomes too large, the perpendicularity of the longitudinal direction of the traveling frame to the longitudinal direction of the steel plate to be cut decreases. As a result, when the steel plate to be cut is cut in the transverse direction, the perpendicularity of the cutting direction to the longitudinal direction of the steel plate to be cut is lowered, and the cutting accuracy of the steel plate to be cut in the transverse direction is lowered. Further, if the gap between the traveling frame and the rail becomes too large, the traveling stability of the traveling frame will also deteriorate, and the cutting accuracy in the traveling direction of the steel plate to be cut will also deteriorate.

JP-A-4-231175

As described above, if the gap between the traveling frame and the rail becomes too large in the steel plate gas cutting apparatus, the cutting precision of the steel plate to be cut is lowered. Therefore, in order to maintain the cutting accuracy of the steel plate to be cut, it is necessary to manage the gap between the traveling frame and the rail.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a steel plate gas cutting apparatus capable of controlling a gap between a traveling frame and a rail.

According to the present invention, the following 1 to 3 steel plate gas cutting is provided.
1.
A steel plate gas cutting apparatus for gas cutting a steel plate to be cut,
A traveling frame that is arranged above the steel plate to be cut so as to extend along the width direction of the steel plate to be cut and that can travel along rails arranged in a direction along the longitudinal direction of the steel plate to be cut (hereinafter referred to as "traveling direction"). and,
a gas torch that can move in a direction along the longitudinal direction of the traveling frame (hereinafter referred to as a "transverse direction"),
The traveling frame includes a traveling unit that travels along the rail,
The traveling unit includes a traveling unit main body, a side roller set arranged on one side of the traveling unit main body in the traveling direction and opposed to both side surfaces of the rail (hereinafter referred to as "one side roller set"), and the traveling unit. A side roller set (hereinafter referred to as "other side roller set") arranged on the other side of the unit body in the running direction and facing both side surfaces of the rail,
The one side roller set includes a side roller facing one side of the rail (hereinafter referred to as "first side roller") and a side roller facing the other side of the rail (hereinafter referred to as "second side roller"). ) and
The other side roller set includes a side roller facing one side of the rail (hereinafter referred to as "third side roller") and a side roller facing the other side of the rail (hereinafter referred to as "fourth side roller ) and
A first distance sensor and a second distance sensor are installed in the main body of the traveling body unit,
The installation pattern of the first distance sensor and the second distance sensor is any one of the following (1) to (4),
(1) Said first distance sensor: Installed near said first side roller Said second distance sensor: Installed near said second side roller (2) Said first distance sensor: Installed near said third side roller Installation said second distance sensor: installed near said fourth side roller (3) said first distance sensor: installed near said first side roller said second distance sensor: installed near said third side roller ( 4) The first distance sensor: installed near the second side roller The second distance sensor: installed near the fourth side roller The first distance sensor and the second distance sensor are installed on the side surface of the rail, respectively. Continuously measure the distance to
A gas cutting apparatus for a steel plate, comprising computing means for continuously obtaining a difference between distances continuously measured by the first distance sensor and the second distance sensor.
2.
2. The steel plate gas cutting apparatus according to 1 above, further comprising alarm means for issuing an alarm when the difference becomes equal to or greater than a predetermined value.
3.
3. The steel plate gas cutting apparatus according to 1 or 2 above, which is a cross cutter for gas cutting the steel plate to be cut in the transverse direction.

In the present invention, the difference between the distances continuously measured by the first distance sensor and the second distance sensor is continuously obtained. This difference serves as an index indicating the size of the gap between the traveling frame and the rail. That is, the larger the difference, the larger the gap between the traveling frame and the rail. Therefore, according to the present invention, the gap between the traveling frame and the rail can be managed by managing this difference.
By issuing an alarm when the difference becomes equal to or greater than a predetermined value, the cutting accuracy of the steel plate to be cut can be maintained.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic plan view of a gas cutting system including a cross cutter that is an embodiment of the present invention, in which (a) shows a state in which a steel plate to be cut is gas-cut in the running direction, and (b) the steel plate to be cut is gas-cut in the transverse direction. You are about to disconnect. 2 shows a traveling unit, where (a) is a schematic plan view and (b) is a cross-sectional view taken along line II of (a). FIG. 4 is a schematic plan view showing an inclination angle θ of the traveling unit;

FIG. 1 shows a gas cutting system A including a cross cutter 100 that is one embodiment of the present invention.
This gas cutting system A includes a cross cutter 100 for gas cutting the steel plate S to be cut in the transverse direction, and a frame planer 200 for gas cutting the steel plate S to be cut in the running direction.

The cross cutter 100 is arranged above the steel plate S to be cut so as to extend along the width direction of the steel plate S to be cut. A frame 10 is provided. Specifically, the gate-shaped frame 10 is arranged so as to straddle (construct) the steel plate S to be cut in the width direction, and can run along the rails 11a and 11b arranged in the running direction. The portal frame 10 also includes a traveling unit 12 that travels along the rails 11a, details of which will be described later. A drive mechanism (motor, etc.) for running the portal frame 10 is omitted from the drawing.

One gas torch 20 is attached to the portal frame 10 . Specifically, the gas torch 20 is attached so as to be movable in the direction along the longitudinal direction of the portal frame 10, that is, in the transverse direction. The transverse direction is also the direction along the width direction of the steel plate S to be cut.

Like the cross cutter 100, the frame planer 200 also has a portal frame 10A, and two gas torches 20A are attached to the portal frame 10A so as to be movable in the longitudinal direction of the portal frame 10A, that is, in the transverse direction. It is

In this gas cutting system A, the edge of the steel plate S to be cut is cut by the frame planer 200 as shown in FIG. 1(a). After the edges are cut, the steel plate S to be cut is cut at two points (S1, S2) in the horizontal direction as shown in FIG. 1(b) in order to obtain a product.

Next, the configuration of the traveling unit 12 will be described with reference to FIG.
The traveling unit 12 includes a traveling unit main body 12a, one side roller set 12b arranged on one side in the traveling direction of the traveling unit main body 12a and opposed to both side surfaces of the rail 11a, and a set of side rollers 12b on the other side in the traveling direction of the traveling unit main body 12a. and other side roller sets 12c arranged and opposed to both side surfaces of the rail 11a.
The one side roller set 12b is called a first side roller 12b-1 facing one side of the rail 11a and a second side roller 12b-2 facing the other side of the rail 11a. ) and The other side roller set 12c includes a third side roller 12c-3 facing one side of the rail 11a and a fourth side roller 12c-4 facing the other side of the rail 11a.
A first distance sensor 13 and a second distance sensor 14 are installed in the traveling unit main body 12a. The first distance sensor 13 and the second distance sensor 14 continuously measure the distance to the side surface of the rail 11a.

Thus, since the traveling unit 12 includes four side rollers, there are gaps a to d between each side roller and the side surface of the rail 11a. , for example, at an inclination angle θ as shown in FIG. This inclination angle θ indicates the deviation of the perpendicularity of the longitudinal direction of the traveling frame (transverse cutting direction) with respect to the longitudinal direction of the steel plate to be cut ( ^longitudinal direction of the rail 11a). −c)/L), or the tilt angle θ=tan ⁻¹ ((db)/L). Here, L is the distance between the one side roller set 12b and the other side roller set 12c.
That is, the inclination angle θ increases as the difference between the gap a and the gap c or the difference between the gap b and the gap d increases. The inclination angle θ increases as the difference between the gaps a and b or the difference between the gaps c and d increases.

In this embodiment, in order to measure the degree of the difference between the gap b and the gap d, the first distance sensor 13 is installed near the second side roller 12b-2, and the second distance sensor 14 is installed near the fourth side roller 12c. -4 (installation pattern (4) described above).
As described above, the first distance sensor 13 and the second distance sensor 14 continuously measure the distance to the side surface of the rail 11a. In this embodiment, the distance x continuously measured by the first distance sensor 13 is The distance y continuously measured by the second distance sensor 14 corresponding to the gap b corresponds to the gap d, and in this embodiment, the first distance sensor 13 and the second distance sensor 14 continuously measure A calculation means (not shown) for continuously calculating the distance difference is provided. In this embodiment, the difference calculated by the calculation means corresponds to the difference between the gap b and the gap d, and thus the distance between the traveling frame 10 and the rail 11a. accommodate gaps. That is, the larger the difference calculated by the calculating means, the larger the gap between the traveling frame 10 and the rail 11a. Therefore, according to this embodiment, the gap between the traveling frame 10 and the rail 11a can be managed by managing this difference.
In this embodiment, the inclination angle θ shown in FIG. 3 is represented by the above distance x and distance y as θ=tan ⁻¹ ((y−x)/L′). Here, L′ is the distance between the first distance sensor 13 and the second distance sensor 14 . ,

In this embodiment, there is further provided alarm means for issuing an alarm when the difference obtained by the calculation means exceeds a predetermined value. That is, in the present embodiment, the cutting accuracy of the steel plate to be cut can be maintained by issuing an alarm from the alarm means when the difference becomes equal to or greater than a predetermined value.

In this embodiment, the first distance sensor 13 is installed near the second side roller 12b-2 in order to measure the degree of difference between the gap b and the gap d, and the second distance sensor 14 is installed near the fourth side roller 12c-. 4 (installation pattern (4) described above), the first distance sensor 13 is installed near the first side roller 12b-1 in order to measure the extent of the difference between the gap a and the gap b, The second distance sensor 14 may be installed in the vicinity of the second side roller 12b-2 (installation pattern (1) described above), and the first distance sensor 13 may be installed to measure the degree of difference between the gap c and the gap d. may be installed in the vicinity of the third side roller 12c-3, and the second distance sensor 14 may be installed in the vicinity of the fourth side roller 12c-4 (installation pattern (2) described above), and the gap a and the gap c The first distance sensor 13 may be installed near the first side roller 12b-1, and the second distance sensor 14 may be installed near the third side roller 12c-3 in order to measure the degree of difference between Installation pattern (3) described above).
Regardless of the installation pattern, the difference between the distances continuously measured by the first distance sensor 13 and the second distance sensor 14 is continuously obtained by the calculation means, thereby determining the distance between the traveling frame 10 and the rail 11a. gap can be managed.

Although the traveling unit 12 is applied to the cross cutter in this embodiment, the traveling unit 12 can also be applied to the frame planer.

A Gas cutting system 100 Cross cutter 200 Frame planer 10, 10A Portal frame (running frame)
11a, 11b rail 12 traveling unit 12a traveling unit body 12b one side roller set 12b-1 first side roller 12b-2 second side roller 12c other side roller set 12c-3 third side roller 12c-4 fourth side Roller 13 First distance sensor 14 Second distance sensor 20, 20A Gas torch S Steel plate to be cut

Claims (3)

A steel plate gas cutting apparatus for gas cutting a steel plate to be cut,
A traveling frame that is arranged above the steel plate to be cut so as to extend along the width direction of the steel plate to be cut and that can travel along rails arranged in a direction along the longitudinal direction of the steel plate to be cut (hereinafter referred to as "traveling direction"). and,
a gas torch that can move in a direction along the longitudinal direction of the traveling frame (hereinafter referred to as a "transverse direction"),
The traveling frame includes a traveling unit that travels along the rail,
The traveling unit includes a traveling unit main body, a side roller set arranged on one side of the traveling unit main body in the traveling direction and opposed to both side surfaces of the rail (hereinafter referred to as "one side roller set"), and the traveling unit. A side roller set (hereinafter referred to as "other side roller set") arranged on the other side of the unit body in the running direction and facing both side surfaces of the rail,
The one side roller set includes a side roller facing one side of the rail (hereinafter referred to as "first side roller") and a side roller facing the other side of the rail (hereinafter referred to as "second side roller"). ) and
The other side roller set includes a side roller facing one side of the rail (hereinafter referred to as "third side roller") and a side roller facing the other side of the rail (hereinafter referred to as "fourth side roller ) and
A first distance sensor and a second distance sensor are installed in the main body of the traveling body unit,
The installation pattern of the first distance sensor and the second distance sensor is any one of the following (1) to (4),
(1) Said first distance sensor: Installed near said first side roller Said second distance sensor: Installed near said second side roller (2) Said first distance sensor: Installed near said third side roller Installation said second distance sensor: installed near said fourth side roller (3) said first distance sensor: installed near said first side roller said second distance sensor: installed near said third side roller ( 4) The first distance sensor: installed near the second side roller The second distance sensor: installed near the fourth side roller The first distance sensor and the second distance sensor are installed on the side surface of the rail, respectively. Continuously measure the distance to
A gas cutting apparatus for a steel plate, comprising computing means for continuously obtaining a difference between distances continuously measured by the first distance sensor and the second distance sensor. 2. The steel plate gas cutting apparatus according to claim 1, further comprising alarm means for issuing an alarm when said difference becomes equal to or greater than a predetermined value. 3. The steel plate gas cutting apparatus according to claim 1 or 2, which is a cross cutter for gas cutting the steel plate to be cut in the transverse direction.

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