JPS591502B2 - thermal slab cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermal slab cutting device that has a simple structure and reliable operation.

It is common practice to divide the heated slab conveyed through the roller table conveyance path into desired lengths using an oxygen blowpipe, but in this case it is not easy to determine the cutting line precisely and quickly. do not have.

In particular, it is difficult to detect the starting end of a transported thermal slab, and when the temperature of the thermal slab is close to 1000° C., it is almost impossible to detect the starting end using a phototube. Although it is possible to detect it using a laser beam, it is not practical as it would cause significant damage to the detection equipment. The present invention aims to provide a thermal slab cutting device with a simple structure and reliable operation.
The present invention provides a gate-shaped body of a thermal slab cutting device that can move on rails on both sides across a roller table conveyance path, and a rotating body that protrudes from one leg of the portal body toward the roller table conveyance path. an end face detection mechanism that captures the heat slab end face using a detection roll at the tip of the support arm and issues a detection signal;
A gate that elastically presses a measuring roll at the end of a rotating shaft hanging from the other leg of the portal body against the conveyance path rail using air pressure, and generates a signal to notify the amount of rolling as the portal body moves. A mold machine movement amount notification mechanism receives and uses the start end detection signal of the heat slab end face detection roll as a starting point, receives and calculates a signal that announces the rolling amount of the following measuring roll, and calculates it in advance. This thermal slab cutting device is characterized by comprising a calculation mechanism that calculates the cutting position by comparing it with the stored thermal slab cutting length and instructs the operation of the oxygen blowpipe.

The first feature of the present invention is that the starting end of the slab is detected using mechanical structure rather than using light beams.

That is, in the present invention, a detection roll provided at the tip of a support arm that is pivotably mounted on a leg of a gate-type body of a thermal slab cutting device and is rotatable on a horizontal plane is brought into abutting contact with the front end surface of a thermal slab. Since the location of the thermal slab is detected, no matter how high the temperature of the thermal slab is, it can be detected without any problem.After the detection signal is sent, the slag can be detected by rotating on a horizontal plane and retreating to the side. There is absolutely no protection against the transportation of Second aspect of the present invention
The feature is that the measuring roll at the end of the rotating shaft hanging from the leg of the gantry is elastically pressed against the side of the transport rail by air pressure, and rolls as the gantry moves forward. The present invention is equipped with a mechanism that notifies the calculation device of the amount of rolling that has been achieved.

Originally, the distance between the measuring roll and the conveyance path rail constantly increased and decreased as the gate-type aircraft progressed, but in the present invention, the two are elastically crimped and joined using air pressure. Because of this, it rolls without slipping at all,
It was experimentally confirmed that the number of rolling rolls of the measuring roll strictly indicates the amount of movement of the gate-shaped aircraft. The second feature of the present invention is that the operating position of the oxygen blowpipe for oxygen cutting of the hot slab is determined without any human intervention, and the starting edge detection signal of the hot slab is inputted, and this is used as the starting point, and the rotation speed of the subsequent measuring roll is determined. By calculating the fraction on the self-assembled disc and comparing it with the pre-memorized cutting length of the hot slab, the operating position of the oxygen blowpipe is automatically determined, eliminating the occurrence of human error. .

Therefore, by carrying out the present invention, it is possible to completely eliminate the occurrence of human error caused by the high temperature of the hot slab, and there is also an effect that the operator can be largely relieved of high-temperature work. The present invention will be explained in detail based on examples.

FIG. 1 is an explanatory view of the entire present invention, in which a is a gate-shaped machine body of a thermal slab cutting device, a-1 is a beam part of a, a-2 is a drive side leg of a, and a-3 is a The driven leg of a, b is the thermal slab end face detection mechanism protruding from the driven leg a-3 of the portal body a to the inner conveyance path, and c is the shaft end hanging down from the driving leg a-2. d is a measuring roll mechanism that rolls to notify the amount of movement of the machine body a, and d is a rail on which the gate-shaped machine body a runs, which is located on both sides of the roller table conveyance path that conveys the heat slab.

Figure 2 is an explanatory diagram of the thermal slab end face detection mechanism, where A is a plan view, B is a rear view of the main part, C is an explanatory diagram of the behavior of the detection roll when detecting the front end face of the thermal slab, and D is an explanatory diagram FIG. 6 is an explanatory diagram of the behavior of the detection roll when detecting the rear end surface of the thermal slab.

FIG. 3 is an explanatory diagram of the operation chamber and the measuring roll mechanism, in which A is an explanatory view of the whole, B is an enlarged view of the vicinity of the measuring roll, and C is an enlarged view of the scale disk.

In Fig. 2, 1 is an arrow indicating the forward direction of the portal body a;
Reference numeral 2 indicates an arrow indicating the backward direction of the machine a, and reference numeral 3 indicates a limit switch that sends a message indicating that the detection roll has captured the end of the slab to the computing device.

Reference numeral 5 denotes a sending roller which connects the limit switch 3 by pressure, and is usually elastically pressed into a recess 6-1 on the periphery of the detecting device support disk 6 by a coil spring 4.

A detection roll arm 7 is fixed to the disk 6 and supports a thermal slab end face detection roll 10 at its protruding tip and end.

11 and 12 are stoppers of the arm 7.

Reference numeral 13 denotes a guide plate for rollers 8 and 9 fixedly planted on the disc 6, which is moved forward by the operation of the air cylinder 14 to return the disc 6 to its original position.

15 is the central axis of the disc 6, 16 is the rotating bus of the disc 6, 17,
Reference numerals 18 are fulcrums at both ends of the rotation spring 16.

19 is a starting end of the thermal slab, and 20 is a rear end of the thermal slab.

A stopper 21 on the disc 6 elastically presses the arm 7 with a spring 25 to support the arm 7 in the horizontal direction. 22
In this measurement, the limit switch 3 sends a signal indicating that the detection roll 10 captures the end of the heated slab, and the calculation device inputs this signal and instructs the measuring roll to start measurement, and the measuring roll starts rolling for measurement. It's a starting point.

23 is another stopper on the disc 6, 24 is the sending roller 5
is the direction of travel arrow.

In FIG. 3, reference numeral 31 denotes an operation room partitioned off by a wall 32 and a front glass 33 on the fuselage floor of the drive side leg a-2 of the gate-shaped fuselage a, and has an operation panel 34 containing a built-in computing device. The main equipment includes a group of electromagnetic valves 35 for remotely controlling a large number of air cylinders.

As a thermal slab measuring device, the measuring ring roll 40 rolls in pressure contact with the rail d, and the shaft 39 of the measuring ring roll 40 is pulled toward the rail d by a command from the operation panel 34, and the measuring ring roll 40 is elastically pressed. Air cylinder 41 and measuring roll 40
A counter 42 that transmits the number of rolling times to the calculation device 34 and display 43, a handle 38 that positions the angle of the shaft 39 to zero, a bearing 37 that supports the shaft 39 so that the hanging angle can be varied, a diameter of 318.471 tm (circumference) 1m)
It is equipped with precise scales in the clockwise and counterclockwise directions along the circumference, and the scales at the corresponding positions on the length of 1 m or more of the hot slab cutting can be used to determine the blowpipe operating position based on the rolling of the measuring roll 40. A scale disk 36 that allows the operator to confirm the determination of the arithmetic device with the naked eye, a display 43 that receives and displays the signal from the counter 42, an 0N and 0FF switch 44 that commands the forward and stop of the portal body a, It is equipped with a reset switch 45 that commands the retreat of the gate-shaped aircraft a. Next, the operation of this embodiment will be explained.

As shown in Figure 2.

As soon as the heated slab is delivered and stopped on the roller table, cutting begins. First, the operation room 3 in Figure 3
1 closes the ON switch 44 that commands the forward movement of the portal body a.

The portal body a moves forward in the direction of arrow 1 (Fig. 2), and as shown by the solid line in Fig. 2C, the arm 7 protrudes vertically from the driven leg part a-3 toward the roller table. The detection roll 10 supported at the tip abuts against the starting end 19 of the hot slab. As the portal body a advances further, the support disk 6 moves forward while the detection roll 10 collides with the starting end 17 of the thermal slab, so the detection roll 10 moves around the central axis 15 of the support disk 6. This results in a circular motion on the arc curve 26. When this circular momentum reaches the distance l from the starting end surface 19, the support disk 6
The sending roller 5, which was press-fitted by the spring 4 into a recess 6-1 on the opposite circumference on the axis of the arm 7, is moved from the recess 6-1 to the circumference of the support disk 6 by the elasticity of the spring 4. arrow 2 against
4, and presses the limit switch 3 to close the signal circuit and send a signal to the drive side leg a-2 of the portal body a to notify that the detection roll 10 has captured the starting end 19 of the thermal slab. A message is sent to the arithmetic device 34 of a certain operation room 31. In this way, the starting end 19 of the thermal slab is located on the line 22 behind the signal line of the limit switch 3 by a distance l in the traveling direction of the portal body a, so the computing device 34 stores this in advance. , the blowpipe cutting line is set l behind the cutting line calculated by the rolling of the measuring roll 40. When the circular body a moves further forward, the support disk 6 and the center shaft 15 move straight together with the body a, so that the detection roll 1
0 moves circularly on the circular motion curve 26, but essentially slides on the starting end surface 19 of the hot slab in the direction of the core axis 15,
When the support disk 6 exceeds the critical angle of the rotation spring 16 shown in FIG. 2B, it will elastically rotate and separate from the thermal slab surface, and the arm 7 will abut against the stopper 12 and stop. .

The cutting line is calculated by the rolling of the measuring roll 40, and after the completion of cutting the blowpipe, the portal body a moves forward further and calculates the next blowpipe cutting line.
4 to move the roller guide plate 13 forward and press the roller 8 at the position 8-1, the support disk 6 will move toward the center axis 15.
When the support disk 6 rotates around , and exceeds the critical angle of the rotation spring 16, the support disk 6 instantaneously rotates due to the operation of the rotation spring 16, and the phase shown by the solid line in FIG. 2A is restored.

Figure 2D shows a case where the rear end 20 of the thermal slab is captured, the length of the thermal slab is measured from the rear, and the blowpipe is cut. Since this is exactly the same as when cutting from , a detailed explanation will be omitted.

Next, the operation of the measuring roll mechanism will be explained based on FIG.

When a signal indicating that the detection roll 10 has captured the starting end 19 of the thermal slab is input from the limit switch 3 to the calculation device 34, the calculation device 34 elastically pulls the shaft 39 toward the air cylinder 41 using air pressure, and removes the medium ring. A command is given to elastically press the roll 40 against the side surface of the rail d.

The measure ring roll 40 that is in pressure contact with the rail d rolls as the portal body a moves forward, and the counter 42 is rotated with each rotation.
The number of rolling times is transmitted to the arithmetic unit 34 and the display 43. When the sum of the number of rotations of the counter 42 and the fraction of 1 m or less of the scale disc 36 reaches the pre-stored numerical value of the thermal slab cutting length, the arithmetic unit 34 releases the shaft 39 to the air cylinder 41, and releases the shaft 39 to the air cylinder 41. Forward switch 44 of a
is commanded to be set to 0FF, and both the forward movement of the portal body a and the rolling of the measuring roll 40 are stopped. Furthermore, the arithmetic unit 34 calculates the position of the starting end 19 of the thermal slab input from the limit switch 3, the length of l, the numerical value input from the counter 42 of the measuring roll 40, and the fractional numerical value on the scale disc 36. is calculated and compared with the stored thermal slab cutting length to calculate the blowpipe cutting line and command the blowpipe to operate.

The operator only visually confirms the numbers on the dial plate 36 and does not directly participate in determining the blowpipe cutting line. In this example, since the oxygen blowpipe cutting of the hot slab is carried out as described above, there is no fear of human error caused by high-temperature work, the high-temperature work of the workers is significantly reduced, and the high-temperature work is extremely easily and reliably performed. ,
Moreover, work can be done quickly.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the entire present invention, in which a is a gate-shaped body of a thermal slab cutting device, a-1 is a beam portion of a, a-2 is a drive side leg of a, and a-3 is a b is the thermal slab end surface detection mechanism protruding from the driven leg a-3 of the portal body a to the inner conveyance path, and C is the shaft end hanging down from the driving leg a-2. Measuring roll mechanism that rolls and announces the amount of movement of machine a; d is a roller table that transports the thermal slab; rails on both sides of the conveyance path for the gate-shaped machine a; Fig. 2 shows the end face detection of the thermal slab; It is an explanatory diagram of the mechanism, A is a plan view,
B is a rear view of the main part, C is an explanatory diagram of the behavior of the detection roll when detecting the front end surface of the thermal slab, D is an explanatory diagram of the behavior of the detection roll when detecting the rear end surface of the thermal slab, and Figure 3 is an illustration of the behavior of the detection roll when detecting the rear end surface of the thermal slab. It is an explanatory diagram of an operation room and a measuring roll mechanism, and A
B is an enlarged view of the area around the measuring roll, and C is an enlarged view of the scale disc. 1... Aircraft forward direction arrow, 2... Aircraft backward direction arrow, 3... Outgoing limit switch,
4... Sending roller pressing spring, 5... Sending roller, 6... Detecting device support disk, 7...
...Detection roll arm, 8...Roller on arm 7, 9...Roller opposite to roller 8, 10...
...Detection roll, 11...Forward stopper 1, 12...Reverse stopper 1, 13...
Roller guide plate, 14...Return air cylinder,
15... Central axis of support disk 6, 16...
Turning spring, 17, 18...Fully point of turning spring 16, 19...Starting end of thermal slab, 20...
Heat slab retreat part, 21...Advance stopper 1, 2
3... Backward stopper 1, 22... Count start line, 24... Outgoing roller advance arrow, 25... Spring that pulls arm 7 together, 26...・
...Detection roll circular motion curve, 31...Operation room, 32...Wall, 33...Window glass,
34...Operation panel, 35...Solenoid valve group, 36...Scale disc, 37...Shaft bearing, 38...Positioning Handle, 39・
...Shaft, 40 ... Measuring roll, 41 ... Shaft pull air cylinder 42 ... Counter, 43 ... Display device, 44...0N,0FF switch, 45.
...Reset switch.

Claims (1)

[Claims] 1 A gate-shaped body of a thermal slab cutting device that can be moved on rails on both sides across a roller table conveyance path, and a rotatable support that protrudes from one leg of the portal body toward the roller table conveyance path. An end face detection mechanism that captures the end face of the thermal slab using a detection roll at the tip of the arm and issues a detection signal, and a measuring roll at the end of the rotating shaft hanging from the other leg of the portal body is elastically attached to the conveyance path rail using air pressure. a gate-shaped machine movement amount notification mechanism that presses the gate-shaped machine body and issues a signal to notify the amount of rolling accompanying the movement of the gate-shaped machine body, and receives a starting edge detection signal of the thermal slab end face detection roll and uses this as a starting point;
Equipped with a calculation mechanism that receives and calculates a signal announcing the rolling amount of the following measuring roll, calculates the cutting position by comparing it with a pre-stored cutting length of the hot slab, and instructs the operation of the oxygen blowpipe. A thermal slab cutting device characterized by: