JPH0638606Y2 - Deburring device for fusing slabs - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention is a deburring device for removing burrs adhering to the rear end of a melt-cut slab when the continuously cast slab is melt-cut to a predetermined length. Regarding the device.

"Prior art" Conventionally, as a deburring device for removing burrs adhering to the lower edge of the rear end of the melt-cut fused slab when the continuously cast slab is fused by a gas torch to a predetermined length,
As shown in FIG. 4, a housing 52 is provided in the middle of the transfer line 3 for transferring the blown slab 2 from the casting step, and the fixed side 53a of the air cylinder 53 is fixed to the housing 52. A cutting blade 55 that is substantially parallel to the end surface of the fusing slab 2 is disposed on the movable side 53b, and when removing the burr 22 attached to the fusing slab 2, the air cylinder 53 is extended and the cutting blade 55 is removed.
The fusing slab 2 is conveyed in the conveying direction as shown by the arrow 56 in the figure.
There was a device that tried to remove the burr 22 by pressing and rubbing it against the lower surface of the.

However, the burr 22 cannot be sufficiently removed by simply rubbing the burr 22 adhering to the fused slab 2 with the cutting blade 55 once. Furthermore, since the cutting blade 55 applies a force substantially rearward to the burr 22 attached along the lower edge of the rear end surface 57,
As shown by the chain double-dashed line in FIG. 4, the burr 22 rubbed by 55 rotates from the lower surface side of the fusing slab 2 to the rear end surface 57 side with the welding portion as the center of rotation, Cutting blade 55 is burr
There is a problem that the lower surface of 22 slips and remains without being removed from the melt-cut slab 2.

Further, as a deburring device for preventing the burr 22 from rotating to the rear end face 57 of the fusing slab 2 and the cutting blade 55 from sliding under the burr 22 and reliably removing the burr 22, there is disclosed in Japanese Patent Laid-Open No. 61-56813. As disclosed in Japanese Patent Publication No. JP-A-2003-242242, the blown slab during transportation is stopped and clamped, and an upper blade mechanism as a means for suppressing rotation of burrs is brought into contact with the end surface of the blown slab, The lower blade mechanism is driven along the lower surface of the blade to scrape it, and the upper blade mechanism and the lower blade mechanism cause burrs to adhere to the lower surface of the fused slab and to sandwich the burrs. There was a device for surely removing.

However, in this device, in order to bring the end surface of the fusing slab and the upper blade mechanism into contact with each other, the position of the fusing slab being conveyed on the conveying line is controlled to stop and after removing the burr. In addition, the transportation line must be moved or stopped for transportation, which greatly complicates the device,
Further, there is a problem that it takes time before the melt-cutting slab is conveyed to the rolling process.

In the fusing slag removing device for a steel piece described in Japanese Utility Model Publication No. 60-39147, a fixed tip is formed in a dogleg shape with the center of the front side on which the steel piece 2 is inserted as an apex on a vertically movable tool rest 4. Since the cutting tool 5 is provided, the tip of the tip cutting tool 5 first hits the burr that thinly adheres to the center of the steel piece 2, and the speed of the steel piece 2 is weakened by this hitting before the steel piece 2 Since the leading edged tool 5 hits the thick burr on both side edges in the width direction, most of the burr is likely to remain without being cut, and the leading edged tool 5
However, there is a drawback in that the burr cannot be cut well. Further, in the fusing slag removing device for steel slabs described in the above-mentioned official gazette, after the burrs on the lower surface of the steel slab 2 are cut by the tip blade 5, the tip blade 5 is guided to the V-shaped inclination. Since the scattered burrs are scattered to the outside of the steel slab 2, it is difficult to collect the scattered burrs, and the scattered burrs are liable to cause a bite failure of equipment around the deburring device.

"Problems to be Solved by the Invention" The present invention has been made to solve the above-mentioned problems. Burrs adhering to the rear end of the melt-cut slab without stopping the melt-cut slab during transportation. It is an object of the present invention to provide a deburring device capable of easily and surely removing the burrs and preventing the scattered burrs from biting into a device around the deburring device and causing an obstacle.

[Means for Solving the Problems] Therefore, as shown in FIGS. 1 and 2, in the present invention, in the normal state, the lower position without contact with the fusing slab 2 conveyed on the conveying line 3 is used. In the deburring device for a melt-cut slab, which is raised at the time of removing burrs and has a blade 8 in contact with the lower surface of the melt-cut slab 2, both side edges in the width direction along the lower edge of the rear end 21 of the melt-cut slab 2 A gas torch is provided to control the speed so as to generate a thin burr 22 in the thick center and prevents the burr 22 from being pushed into the lower surface of the melt-cutting slab 2 by the transport roll 4 when melted by the gas torch. In order to remove the burr 22 while the speed of the slab 2 is still high and the temperature is high, the blade 8 is arranged immediately after the fusing step, and the burr 22 attached to the rear end 21 of the fusing slab 2 is widened. Melt to start removing from both side edges. Broken slab 2
There is provided a deburring device for a melt-cut slab, characterized in that the blades 8 are arranged with an inclination inward from both side edges in the width direction when viewed from the advancing direction.

[Operation] According to the above configuration, since the blades 8 are arranged with an inclination inward from both side edges in the width direction when viewed from the traveling direction of the fusing slab 2, the speed of the fusing slab 2 is still high and the temperature is high. When the blade 8 first hits the thick burrs 22 on both side edges in the width direction while the burrs 22 are high and soft, the burrs 22 can be satisfactorily cut by the blade 8. In addition, burrs 22 on the lower surface of the melt-cut slab 2
After being cut by the blade 8, it is guided by the inclination of the blade 8 and gathers in the center of the fusing slab 2, so that the cutting burr 22 can be collected without scattering to the outside.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, the frame 1 supporting the blades 8 and 9 is arranged below the transfer line 3 for transferring the blown slab 2 in the transfer direction 23.
It is fixed in a pit (not shown) so as to be located between the transport rolls 4 provided on the above. The frame 1 has a horizontal beam portion 11, on which a cylindrical guide 12 for guiding the two guide rods 5 and a fixed side 61 of the air cylinder 6 are fixedly mounted. A box-shaped receiving portion 13 that supports the elevating base 7 locked to the movable side 62 of the cylinder 6 in the lowered position is provided. The air cylinder 6 that constitutes the lifting mechanism has a receiving portion 13
The fixed side 61 is supported by the bracket 14 provided at the bottom of the movable base 62, and the movable side 62 is rotatably locked to the lower surface of the elevating base 7. The elevating base 7 is locked by the air cylinder 6 and is supported by the guide rod 5 so as to constantly press the blades 8 and 9 against the lower surface of the melt-cutting slab 2 when removing burrs. It is guided by the guide rod 5 by the expansion and contraction drive and smoothly moved up and down. On the elevating base 7, a blade 8 and a blade 9 are fastened to a blade receiver 10 projecting from the upper surface of the elevating base 7 and detachably arranged. As shown in FIG. 2, the blade 8 has a substantially V-shaped planar shape having both blades toward the conveying direction 23 of the melt-cut slab 2 and has both side edges in the width direction when viewed from the conveying direction 23 of the melt-cut slab 2. The blade receiver 10 is arranged so as to incline from the inside. The second blade 9 has a substantially inverted V-shaped planar shape having an apex toward the conveyance direction 23 of the melt-cut slab 2.
The blades 8 and 9 have a width approximately twice that of the fusing piece 2, and as shown in FIG. 1, when the burr 22 is removed, the fusing piece 2 is pressed by the fusing piece 2. Is in a raised position in contact with the lower surface of the, and in a normal state, it is in a lowered position shown by a chain double-dashed line.

The deburring device for fusing slab is such that, when a continuous casting slab is melted by a gas torch (not shown), the burrs 22 welded to the lower surface of the fusing slab 2 are crushed by the transport rolls 4 and are crushed. In order to prevent the roll 4 from being pushed in and to prevent the roll 4 from being damaged, the roll 4 is provided immediately after the fusing step so as to be removed in the earliest possible step after the fusing. The transport line 3 is provided with a pair of photoelectric tubes 25 for confirming the position of the blown slab 2 propelled by the rolls 4 and a control means (not shown) for controlling the vertical movement of the air cylinder 6. The control means controls the air cylinder 6 based on the obtained signal, and the blades 8 and 9 arrive at the ascending position after the front end face of the melt-cutting slab 2 has passed above the second blade 9, and the cutting is performed. The rear end 21 of the slab 2 is controlled so as to be moved to the lowered position after completely passing the blade 9.

In addition, in order to remove burrs adhering along the lower edge of the front end of the fusing slab 2, a second transfer line (not shown) is arranged in parallel with the transfer line 3, and the transfer line 3 is in the transfer direction. Are driven so as to be different from each other, and a deburring device for fusing slabs is provided as in the transfer line 3.

"Operation" Next, the operation of the above embodiment will be described. The continuously cast slab cast by the continuous casting machine is conveyed to a fusing step through a straightening roll or the like and is fused to a desired length by a gas torch. Since the widthwise edges of the continuously cast slab are cold and the temperature is high in the center, the gas torch transition speed is slow at both widthwise edges and fast at the center.
Is thicker on both side edges in the width direction and thinner at the center as shown in FIG. When the fusing slab 2 is conveyed along the conveying line 3 in the conveying direction 23 and crosses the photoelectric tube 25, the control means considers the conveying speed of the fusing slab 2 based on the signal obtained from the photoelectric tube 25, The air cylinder 6 is driven so that the front and rear blades 8 and 9 are located at the elevated position after the front end of the melt-cut slab 2 has passed the rear blade 9. By the extension drive of the air cylinder 6, the front and rear blades 8 and 9 located in the lowered position are moved to the raised position, and are pressed against the lower surface of the moving melted cast slab 2. Then, by utilizing the fact that the fusing slab 2 is propelled by the rolls 4, the front blade 8 firstly moves from the thick burrs 22 attached to both side edges of the fusing slab 2 in the width direction to the thin burr attached to the central portion. Scratch to 22 in a state close to point contact, and remove in a direction inclined in the width direction. At this time, the burr 22 is different from the lower surface of the fusing slab 2 in the rear end 21.
Since it is only welded on the lower edge of the blade and is welded continuously in the width direction, the front blade 8 is formed into a substantially V shape and the burr 22 is removed while being compressed toward the inside. By doing so, the burr 22 is prevented from rotating around the welded portion. Then, the fusing slab 2 is propelled, and the burrs 22 left without being removed by the blade 8 in front are
Next, the direction which is rubbed by the blade 9 at the rear part and is inclined in the width direction in a state close to point contact from the burr 22 attached to the center in the width direction of the fusing slab 2 to the burrs 22 attached to both side edges in the width direction. Will be removed. Then, the fusing slab 2 from which the burr 22 has been removed is continuously conveyed through the first conveying line 3, and the front and rear blades 8 and 9 are returned to the lowered position by contracting the air cylinder 6, Next, the fusing slab to be conveyed is waited.

On the other hand, the fused slab 2 from which the burrs 22 adhering along the lower edge of the rear end 21 has been removed is carried into the second carrying line, and is carried in the opposite direction to that of the front end. The end located at is the rear end, and the burr at the rear end is surely removed by the deburring device provided in the transfer line, and the burr is continuously transferred to the rolling process.

"Other Embodiments" The present invention is not limited to the details of the above-mentioned embodiments, and two air cylinders 6 may be used to lift and lower the front and rear blades 8 and 9, respectively. Good. Note that the burr 22 that cannot be removed by the front blade 8 often rides on the upper surface of the blade 8 and then slides on the upper surface of the rear blade 9, so that the rear blade 9 can be removed.
Is not always necessary.

"Effects" As described above, in the deburring device for fusing slab of the present invention, since the blades 8 are arranged with an inward inclination from both lateral edges of the fusing slab, the rear part of the fusing slab 2 is arranged. The burr 22 attached to the bottom surface of the end can be easily and surely removed without bothering to stop the fusing slab 2, and the burr does not scatter and does not bite into the equipment around the deburring device. is there.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, FIG. 2 is a schematic plan view showing an embodiment of the present invention, FIG. 3 is a schematic side view showing a conventional deburring device, and FIG. It is a schematic diagram of an end surface of a fused slab showing a welding state of burrs in the fused slab. 2 ... Fused slab, 3 ... Conveying line, 4 ... Conveying roll, 8,
… Blades, 21… Rear end, 22… Burrs.

Claims (1)

[Scope of utility model registration request] 1. A burr of a fusing slab, which is in a lower position without contact with a fusing slab conveyed on a transfer line in a normal state, and is raised when removing burrs and which is in contact with a lower surface of the fusing slab. In the take-off device, a gas torch is provided with a speed control to generate burrs that are thick at the center and thin at both edges in the width direction along the lower edge at the rear end of the fused slab,
A fusing step for preventing burrs from being pushed into the lower surface of the fusing slab by a conveying roll when fusing with the gas torch, and for removing the burr while the speed of the fusing slab is still high and the temperature is high and soft. Immediately after arranging the cutting tool, the burrs adhering to the rear end of the fusion-cut slab are inclined inwardly from the width-direction both-side edges when viewed from the width-wise both-side edges in order to start removing from the width-direction both-side edges. A deburring device for fusing slabs, characterized by disposing a blade.