JPS58177221A - Device for removing cutting bur of cast piece - Google Patents

Abstract

PURPOSE:To automatically remove cutting bur generated at the lower edge of the cut surface of a cast piece which is produced by a continuous casting machine and has a large width, with high efficiency on a table with the use of a two-side blade cutter, when two cast pieces having a predetermined size are manufactured from the large width cast piece. CONSTITUTION:A bur cutting machine A comprises two cutter vehicles 3, 3 which are reciprocatingable in the horizontal direction crossing the cut faces 1a, 1b of cast pieces 1A, 1B and which are parallelly arranged at a predetermined space, a two-side blade cutter 4 arranged to extend between these vehicles and elevatable beds 5, 5 for supporting thereon the vehicles 3, 3. Then, the cutter 4 is abutted against the lower surface of the cast piece 1A by operating cylinders on the vehicles 3, 3. Thereafter, cutting bur 2A on the cast piece 1A is filed and removed by the cutter 4 which is operated by simultaneously actuating cylinders on the bed 5 of each bur cutting machine A and by reciprocating the vehicles 3, 3. Thereby, the bur may be automatically removed with high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, a large slab cast by a continuous casting machine is cured in the length direction of the slab and cut into two to produce two slabs of a predetermined width. The present invention relates to a cutting burr removal device for removing cutting burrs generated on the lower edges of the cut surfaces of the two cut slabs.

For example, when continuously casting small-width slabs such as slabs for hot-rolled thin steel sheets, the continuous casting machine casts slabs with a width twice that of the prescribed dimensions, rather than casting them as narrow continuous slabs of a predetermined size using a continuous casting machine. After casting a large continuous slab having a width of 100 mm, cutting it into a predetermined length to make a wide slab, cutting this wide slab into two along its length, It is better to use a slab with a predetermined width and a smaller width in order to improve the casting efficiency of a continuous casting machine.

Therefore, recently, casting of narrow slabs using a continuous casting machine is
This has come to be carried out using the method described above.

-1- In producing slabs by the method described above, gas cutting is generally used to cut a large slab into two along its length. A cutting burr is formed on the lower edge of the cut surface along its entire length, with molten metal adhering and solidifying during fusing. FIG. 1 is a perspective view showing the slab after being cut as described above. A and 1B are two cut slabs, and 2A and 2B are cutting burrs formed on the lower edges of the cut surfaces of slabs IA and IB. This cutting beam 2A,
2B must be reliably removed because it has an adverse effect on the next step of processing the slabs IA and IB.

However, the above-mentioned cutting burr removal is conventionally carried out by a worker using a cutter to remove a cast piece that has been cooled to room temperature, which is extremely inefficient, and From the above-mentioned viewpoint, this invention involves cutting a large slab cast by a continuous casting machine into two pieces along the length of the slab. , when manufacturing two slabs of a predetermined width, cutting beams generated at the lower edges of the cut surfaces of the two cut slabs can be automatically removed with high efficiency; This device provides a burr removal device that supports two cast slabs each having a cutting burr on the lower edge of the cut surface, which has been cut along the length of the slab, and a roller table that transports the slab in the longitudinal direction. , at least one cutter carriage capable of freely reciprocating in a horizontal direction that intersects the cut surface of the cast slab; At least one beam cutting machine provided between the conveyance rollers of the roller table, the machine comprising a double-edged cutter and a frame that supports the cutter carriage in a vertically movable manner; Place each piece separately on the roller table.
It comprises a lid provided between the conveying rollers of the roller chiffle for raising and lowering it from the surface, and a slab presser that presses each of the two slabs when removing cutting burrs, and installed on the beam cutting machine. The invention is characterized in that cutting burrs from the slab are removed by the double-edged cutter of the cutter truck by reciprocating the cutter truck.

Next, the present invention will be explained using examples and drawings.

FIG. 2 is a partially cut-away front view showing an embodiment of the apparatus of the present invention, and FIG. 3 is a partially cut-away plan view of the burr cutting machine. A is a burr cutting machine, and the burr cutting machine A cuts the cut surfaces 1a of slabs IA and IB.

1b, two cutter carts 3゜3 installed in parallel at a predetermined interval and capable of freely reciprocating in the horizontal direction intersecting the cutter carts 3, and a double-edged cutter 4 installed between the cutter carts 3, 3.
and frames 5, 5 which support the cutter carts 3, 3 in a manner that allows them to be raised and lowered.

Cylinders 9, 9 for reciprocating the cutter carts 3, 3 in the horizontal direction are provided on the pedestal 5.5, and the cutter carts 3, 3 are connected to rods 9a, 9a of the cylinders 9, 9 with pins. 10.10 is connected. Therefore, cutter cart 3
, 3 can be reciprocated in the horizontal direction on the frames 5, 5 by means of their wheels 8 due to the synchronized operation of the cylinders 9°9.

The frames 5, 5 are each supported by frames 13.13 erected on the base 12 so as to be movable up and down. Frame 5,5
A jaw member 14 is provided on the lower surface of each of the jaw members 14, and a groove 14a of the jaw member 14 has a pin 15 of an arm 16 whose one end is fixed to a support shaft 17 provided on the base 12. The ends are slidably inserted. Further, one end of an arm 20 is fixed to the support shaft 17, and the other end of the arm 20 is a nib 21 at the tip of a rod 19a of a cylinder 19 whose base end is supported on the base 12 by a horizontal pin 18. connected. Therefore, the actuation of the cylinder 19 causes the rod 1 to
By moving the arms 16.9a forward and backward, the pedestal 5 moves the arms 16.
It is raised and lowered via the frame 20 using the frame 13° 13 as a guide.

A frame 22 for supporting a double-edged cutter is attached to the upper surface of the cutter carts 3, 3, extending between the cutter carts 3.3. The frame 22 has cutting edges 4a and 4b on both sides.
A plurality of double-edged cutters 4 having a shaft 11 inserted into the frame 22 pass through an elongated hole 4C extending vertically and provided approximately in the center of the double-edged cutters 4 in the longitudinal direction. It is being

A cylinder 23 for vertically moving the double-edged cutter 4 is provided on the upper surface of the frame 22 of the cutter carts 3, 3. The tip of the rod 23a of the cylinder 23 is inserted into a cylindrical hole 4d provided at the bottom of the double-edged cutter 4, and by moving the rod 23a up and down by the operation of the cylinder 23, the double-edged cutter 4 can be moved so that the shaft 11 is inserted through it. It can move up and down within the elongated hole 4C.

In addition, in order to facilitate shearing of the cutting edges 2A and 2B by the double-edged cutter 4, the mounting of the frame 22 for supporting the double-edged cutter between the cutter carts 3 and 3 described in -1- It is deflected in the horizontal direction by a required angle with respect to the length direction of IA and IB.

The chutes 26A are provided on both the left and right sides of the frame 22, indicated by imaginary lines in FIG.

26'B is a receiving surface for removal and collection provided below the chutes 25A and 25B.

FIG. 4 explains the operation of this invention device 1! i1 is a schematic plan view, where ■ is a 20th la table equipped with a slab cutting device (not shown) for cutting a slab into two along its length, and ■ is a cutting board of the present invention. This is the 20th-later table provided with a removal device.

As shown in FIG. 4, the burr cutting machine A having the above-described structure includes a plurality of conveying rollers 24, 24, which are arranged in parallel at a predetermined interval and which constitute the 20th la table TI in this embodiment.
・In between, five units are installed below near the cut surfaces of the two cut slabs IA and IB. In addition, the conveyance roller 24,
Between the rollers 24 and 24, the slab 1A and the slab IB are separately transported between the conveying rollers 24.
, a pair of glue phthalo A for raising and lowering from the upper surface of 24,
6A and lifters 6B, 6B are provided. Furthermore, in the vicinity of the longitudinal outer surface IC of the slab IA and the longitudinal outer surface 1d of the slab IB, there are cut holes of the slab IA and IB that can freely come into contact with the outer surfaces 1c and ld. Side guides 7A and 7B are provided which are horizontally movable slab pressers that can press the slab and resist shearing when the slabs 2A and 2B are removed by the double-edged cutter 4.

Next, the operation of the two apparatuses of the present invention will be explained.

The large slab conveyed from the direction of the arrow onto No. 10-La table ■ in Fig. 4 is placed on No. 10-La table I.
A gas cutting machine (not shown) cuts the slab into two along its length, and divides it into two slabs IA and IB of a predetermined width.

Next, the slabs 1A and IB are placed on the 20th la table ■
sent to.

The slabs IA 8- and 1B sent to the 20th table H are centered by advancing the side guides 7A and 7B. Next, after retracting the side guides 7A and 7B, one of the slabs 1B is slightly raised by the lifter 6B.

Next, the side guides 7B are advanced to come into contact with the outer surface 1d of the slab IB, and then the cylinders 19 of each burr cutter A are simultaneously operated to raise the frame 5, and then the cutter carriage 3. Each cylinder 23 of No. 3 is operated to bring the double-edged cutter 4 into contact with the lower surface of the slab IA. Thereafter, the cylinders 9, 9 provided on the stand 5 of each burr cutting machine A are operated simultaneously to move the cutter cart 3.3 forward, thereby cutting the slab I.
The cutting burr 2A of A is shaved off by the double-edged cutter 4, and cut off by the chute 25 on the receiving surface 26? Fall into A. At this time, the double-edged cutter 4 is located below the slab IB.

Next, the double-edged cutter 4 is lowered by the operation of each cylinder 23, the side guide 7B is retreated, and the slab IB is returned onto the conveying roller 24 by lowering the lifter 6B, and then the cutting burr 2A is removed. The cast slab 1A is slightly lifted up by a lifter 6A.

Next, the cylinder 23 of each burr cutting machine A is operated to bring the double-edged cutter 4 into contact with the lower surface of the slab IB, and the side guide 7A
is brought into contact with the outer surface 1C of the slab 1A. Thereafter, by simultaneously operating the cylinders 9°9 of each burr cutting machine A and reciprocating the cutter carts 3, 3, the cut burr 2B of the slab B is shaved off by the double-edged cutter 4, and the chute 2
5, it falls into the receiving image 26B.

In this way, the cutting edges 2A and 2B of slabs IA and IB are
is the conveyance roller 24. '24...The burrs are removed at regular intervals by five burr cutting machines A installed in parallel between them. Next, the yield guide 7A is retreated and the lifter 6A is lowered to return the slab IA onto the conveying straw 24, and then the conveying roller 24 moves the slab IA, 1B forward by a distance equal to or less than the length of the double-edged cutter 4. After that, repeat the above operation again. This operation is repeated once depending on the location of the beam cutting machine A, the number of units installed, or the lengths of the slabs IA and IB. Or by doing it several times, the slab IA
, IB remaining cutting burrs 2A, 2B are completely removed.

Next, another example of the operation of the device of the present invention will be explained with reference to the schematic plan view of FIG. In this example as well, a large slab is cut into two along its length on the 10th table 1'-H, and the two cut slabs are cut on the 20th table ■'. The removal of the cutting edges 2A and 2B of IA and IB is the same as in the embodiment shown in FIG.

In this example, the large slab is cut into two pieces along its length on the 10th rack table I' to form two slabs IA and IB, and then the slab IB is transferred to the transport roller. 24 or raised from the upper surface of the conveying roller 24 by a phthalo B,
Only the slab IA is sent onto the 20th-ra table ■'.

Next, the slab IA of the 20th table ■'-hi is pressed from the upper surface with a pressing device (not shown). By operating the plurality of beam cutting machines A as described above, the cutting burrs 2A of the slab IA are removed by an amount equivalent to the length of the double-edged cutter 4. Next, after releasing the hold on the slab IA, move the slab IA forward by a distance equal to or less than the length of the double-edged cutter 4, and then move the burr cutting machine A back again while pressing the slab 1A from its upper surface. The cutting burr 2A remaining on the slab IA is removed.

After the cutting burrs 2A of the slab IA are completely removed by performing the above-mentioned operation once or several times, the conveying roller 24 of the 20th-ratable ■' is driven to remove the cutting burr 2A of the slab IA.
Transport A to the next process.

Next, after lowering the 10th la table ■' glue phthalo B and returning the slab IB onto the conveying roller 24, the conveying roller 24 is driven to move the slab IB onto the 20th la table. ■'Send upward. Then, by operating the beam cutting machine A in the same manner as described above for the slab IB on the 20th table ■', the cutting beam 2B of the slab IB is removed.

=12- In the embodiment described above, five burr cutting machines A are provided between the conveying rollers 24 of the roller table.
The number of bases installed may be one or any number of bases. Furthermore, the number of cutter carts 3 provided in the burr cutting machine A is not limited to two as in this embodiment, but may be one or any number.

As explained above, according to the apparatus of the present invention, a large slab cast by a continuous casting machine is cut into two along its length to produce two slabs of a predetermined width. In case,
Cutting burrs generated on the lower edges of the cut surfaces of the two cut slabs can be automatically removed with high efficiency by reciprocating the double-edged cutter on one roller table, increasing the productivity of the slabs. Not only can this be greatly improved, but the equipment cost can be reduced to a small amount, resulting in excellent industrial effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a cut slab, FIG. 2 is a partially cut-away front view showing an embodiment of the apparatus of the present invention, and FIG.
The figure is a ←÷ plan view of a burr cutting machine with some parts omitted, FIG. 4 is a schematic plan view explaining an example of the operation of this invention device, and FIG. 5 is a schematic plan view explaining another example of operation of this invention device. It is a diagram. In the drawings, IA, IB = slab, 1 a, 1 b - cut surface, lc. 1d...outer surface, 2A, 2B...cutting burr, 3...
・Cutter cart, 4...double-edged cutter, 4a, 4b...
Blade tip, 4C... Long hole, 4d... Cylindrical hole, 5... Frame, 6A, 6B... Lifter, 7A, 7B... Side guide, 8... Wheel, 9... Cylinder, 9a... Rod, 10... Pin, 11... Shaft, 12... Base, 13... Frame, 14... Jaw member, 14a...
...Groove, 15, 18.21...Pin, 16.20...
Arm, 17... Support shaft, 19... Cylinder, 19a...
... Rod, 22 ... Frame, 23 ... Cylinder, 23a ... Rod, 24 ... Conveyance roller, 25
... shoe), 26A, 26B... receiving surface, A...
Burr cutting machine. 41 ■ Fig. 51

Claims (1)

[Scope of Claims] A roller table that supports two cast slabs each having a cutting burr on the lower edge of the cut surface and transports the cast slab in the longitudinal direction; At least one cutter carriage capable of freely reciprocating in a horizontal direction that intersects the cutting surface of the piece, and a cutter carriage provided with the cutter carriage, the longitudinal direction of the cutting edge being the horizontal direction that intersects with the reciprocating direction of the cutter carriage. at least one burr cutting machine provided between the conveyance rollers of the roller table, the machine comprising a double-edged cutter and a pedestal that supports the cutter carriage in a vertically movable manner; a lid provided between the conveyor rollers of the roller table for raising and lowering from the upper surface, and a lid for each of the two slabs;
It is characterized by comprising a slab presser that presses down the slab when removing the cut kerf, and the cutting burr of the slab is removed by a double-edged cutter of the cutter truck by reciprocating movement of a cutter truck provided on the burr cutting machine. Cutting burr removal device for slabs.