KR100782723B1 - An apparatus for automatically removing head crop of dummy bar in billet casting process - Google Patents

Abstract

The present invention can be automatically separated in a short time by rotating the head crop from the dummy bar to be separated from the dummy bar by its own weight, to prevent safety accidents of the operator, to improve the productivity of work by enabling quick separation work The present invention relates to a dummy bar head crop automatic separation device for manufacturing billets.

The present invention, one side of the dummy bar storage unit is rotatably mounted to a drum formed with a passage through which the dummy bar in the center, the upper side of the drum hanging vertically to the dummy bar storage object so that the end of the rod is connected to the wire rope It is equipped with a driving cylinder that can rotate the drum by being connected to the weight of one side of the drum through, the front head link of the dummy bar to form a groove open to one side at the front end to insert the connecting rod, the rear end to the rear dummy bar When the head crop and the head link is positioned on the passage side of the drum by forming a rotating portion in which the head link is rotatable, the drum is rotated by the operation of a driving cylinder to automatically separate the head crop from the head link. It provides a dummy bar head crop automatic separation device for billet manufacturing.

Billet, Continuous Casting, Cast Drawing, Dummy Bar, Head Crop

Description

Dummy bar head crop automatic separation device for billet manufacturing {AN APPARATUS FOR AUTOMATICALLY REMOVING HEAD CROP OF DUMMY BAR IN BILLET CASTING PROCESS}

1 is an explanatory diagram showing a general billet continuous casting operation;

Figure 2 is an external perspective view showing a dummy bar head crop automatic separation device for billet production according to the present invention;

3 is an exploded perspective view showing a dummy bar head crop automatic separation device for billet production according to the present invention;

Figure a), b), c) is a detailed configuration diagram of the dummy bar and the dummy bar head link provided in the automatic automatic separation device of the dummy bar head crop for billet production according to the present invention;

5 is an operational state diagram of a dummy bar head crop automatic separation device for manufacturing billets according to the present invention;

6 is an operational state diagram illustrating an operation of separating the head crop from the dummy bar by the dummy bar head crop automatic separation device for billet production according to the present invention;

7 is an explanatory view showing a state in which the head crop is separated from the dummy bar by a dummy bar head crop automatic separation device for billet production according to the present invention;

8 is an operational state diagram illustrating a dummy bar head crop removal method according to the prior art;

9 is an external perspective view showing a dummy bar head crop separator for manufacturing billets according to the related art.

       <Description of the symbols for the main parts of the drawings>

10 ..... Base 12 ..... Drum

12a .... Aisle 21 ..... Guide Turning

30 ..... Weight 35 ..... Loading

37 ..... wire rope 40 ..... driven cylinder

50 ..... Head Link 52 ..... Home

60 ..... Rotator 65 ..... Bearing

80 ..... limit switch 100 .... ladle

120 ... mold 140 ... dummy bars

185 .... roller table

The present invention relates to an apparatus for automatically separating the head crop (Head Crop) attached to the front end of the dummy bar for drawing the first cast in the early stage of the casting operation in the continuous casting of billet of small section More specifically, by rotating the head crop from the dummy bar to be separated from the dummy bar by its own weight, it can be separated automatically in a short time, to prevent safety accidents of the worker, and to quickly remove the work to improve work productivity The present invention relates to an improved dummy bar head cropping automatic device for manufacturing billets.

In general, at the beginning of the continuous casting operation, as shown in FIG. 1, molten steel of the ladle 100 is injected into the tundish 110, and molten steel of the tundish 110 is injected into the mold 120. Will produce. In the early stage of this operation, the dummy bar 140 is lifted to the lower side of the mold 120 to draw the cast from the mold, and the front end of the dummy bar 140 in the molten steel in the mold 120 while blocking the lower end of the mold. The connecting rods 142 mounted on the coupling bars 142 are coupled to each other, and in this state, the dummy bar 140 is drawn out to the lower side of the mold 120 by the pinch roll 145, and thus, the cast piece 130 from the mold 120. Continuously cast and withdrawn along the dummy bar 140.

In addition, the dummy bar 140 that pulls the cast slab 130 at the beginning of the casting operation in this way passes through the pinch roll 145 and passes through the cast slab 160, where approximately from the dummy bar 140. The cutter 160 cuts the cast point that has passed by 500 mm to form a so-called head crop 170.

In addition, the dummy bar 140 separated from the cast 130 in this way, as shown in FIG. 8, after removing the head crop 170 from the dummy bar 140, a separate dummy bar storage unit 180. It is raised on the) and moved from the withdrawal direction of the cast piece 130, the cast piece 130 is taken out in a subsequent process along the roller table 185 from which the dummy bar 140 is removed.

In this regard, a conventional dummy bar head crop separator is shown in FIG. 9. The device is provided with a latch 144 for mounting the connecting rod 142 fixed to the head crop 170 at the tip, so that the operator can always remove the head crop 170 from this dummy bar 140. The latch 144 was manually opened and closed, and the head crop 170 was lifted and moved to a separate place.

As such, in the process of removing and transporting heavy materials, the head crops 170 are heavy materials, so dropping them on the instep causes safety accidents of workers and lowers work efficiency, thereby greatly reducing work productivity. It was causing problems.

The present invention is to solve the conventional problems as described above, the object of the head-crop attached to the dummy bar at the beginning of the continuous casting operation automatically when the dummy bar arrives at a certain position without any help, the head crop from the dummy bar automatically The present invention provides a dummy bar head crop automatic separation device for billet manufacturing, which can be improved to prevent a worker's safety accident and to reduce work load, thereby greatly improving work productivity.

In order to achieve the above object, the present invention automatically piles a head crop (Head Crop) attached to the tip of the dummy bar for drawing the initial cast at the beginning of the casting operation in the continuous casting of billet of small cross section In the device for separating directly from the dummy bar, one side of the dummy bar storage unit is rotatably mounted to the drum formed a passage through which the dummy bar passes in the center, the upper side of the drum hanging vertically to the dummy bar storage object of the rod The tip is connected to the weight of one side of the drum through a wire rope to have a drive cylinder that can rotate the drum, the front head link of the dummy bar to form a groove open to one side at the tip to insert the connecting rod, At the rear end, a rotating part is formed such that the head link is rotatable with respect to the rear dummy bar. When the head crop and the head link is located on the furnace side, a dummy bar head crop automatic separating device for billet manufacturing is provided, which is configured to automatically separate the head crop from the head link by rotating the drum by the operation of a driving cylinder. By

Hereinafter, the present invention will be described in more detail with reference to the drawings.

Dummy bar head crop automatic separation device 1 for manufacturing billet according to the present invention, as shown in Figures 2 and 3, for drawing the first cast 130 in the initial stage of the casting operation for continuous casting of billet of small cross-section The head crop 170 attached to the tip of the dummy bar 140 is automatically separated from the dummy bar 140.

According to the present invention, a supporting plate 10 is formed at one side of the dummy bar storage table 180 which is lifted up and down by a plurality of hydraulic cylinders 5 to be taken out from the roller table 185, and the supporting plate 10 is provided. The drum 12 is rotatably mounted on the center to form a passage 12a through which the dummy bar 140 can pass, and the drums 12 are supported on the front and rear sides of the support bars 15a and 15b, respectively. Is installed, the drum 12 is disposed between the supports 15a and 15b, and a guide arc groove 19 is formed on the lower outer peripheral surface of the drum 12, and the guide arc groove 19 is formed in the guide arc groove 19. An arc-shaped guide protrusion 21 on the support plate 10 is slidably coupled to support the drum 12 so as to be rotatable.                     

In addition, arc-shaped guide holes 23a and 23b are formed inside the front and rear support stands 15a and 15b, and protruding from the side surfaces of the drum 12 in the guide holes 23a and 23b. Guide protrusions 25a and 25b are inserted and guided, respectively, so that rotation of the drum 12 is guided. A weight 30 is formed at one side of the drum 12 so that the drum 12 It is configured to pull one side downward.

 In addition, the upper side of the drum 12 is vertically suspended on the dummy bar storage (180) so that the tip of the rod 35 is one side weight 30 of the drum 12 through the wire rope 37 It is provided with a drive cylinder 40 capable of rotating the drum 12 by being connected to the drive cylinder 40, the rear end of the body is fixed to the upper frame (180a) of the dummy bar storage (180), The rod 35 extends downward and is fixed to the weight 30 portion of the drum 12 through the wire rope 37. Therefore, when the driving cylinder 40 pulls the rod 35, the drum 12 is rotated by lifting one side of the drum 12, that is, the weight 30. The drum 12 is returned to its original state by the weight of the weight 30 so that the passage 12a of the drum 12 is always kept horizontal.

On the other hand, the front head link 50 of the dummy bar 140, as shown in Figure 4, to form a groove 52 opened to one side to the front end for mounting the connecting rod 142, the groove ( 52 has a T-shaped cross section corresponding to the rear end projection 142a of the connecting rod 142, and is open toward one side from the center.

In addition, the rear end of the head link 50 is formed with a rotating part 60 to the head link 50 is rotatable with respect to the rear dummy bar 140, the rotating part 60 is the head link 50 A shaft 62 protrudes from the rear center of the back, and a bearing 65 is mounted on the shaft 62, and the bearing 65 has a T-shaped groove 67 formed at the front of the rear dummy bar 140. Is inserted into In addition, a protrusion 70 is formed at one side of the rear shaft 62 of the head link 50, and the protrusion 70 is guided to the front side arc-shaped guide groove 72 of the rear dummy bar 140. By doing so, when the front side head link 50 is rotated about the rear dummy bar 140, it is configured to be a rotational movement in the correct position.

The reference numeral 80 is a limit switch provided on one side of the dummy bar storage stand 180 to detect the dummy bar 140 when the dummy bar 140 is lowered and to operate the driving cylinder 40.

The dummy bar head crop automatic separation device 1 for manufacturing billets according to the present invention configured as described above is inserted into the mold 120 of the continuous casting facility by inserting the connecting rod 142 into the front groove 52 of the head link 50. Back up Then, when the coupling rod 142 and the head link 50 is positioned on the lower side of the mold 120 and the coupling with the molten steel in the mold 120 is completed, the dummy bar 140 is formed by the pinch roll 145. It is drawn and lowered, and at the same time, the cast piece 130 is solidified while being lowered from the mold 120.

In this manner, the dummy bar 140 passes through the pinch roll 145 and the slab cutter 160, and the head link 50 of the dummy bar 140 passes through the slab cutter 160 at about 500 mm. Cast slab 160 is operated to form a head crop 170 on the front side of the head link (50).

That is, such a head crop 170 is formed by cutting the slab 130, which may be coupled to the head link 50 through the connecting rod 142. The dummy bar 140 continues to move and enters the horizontal passage 12a disposed at the center of the drum 12 as shown in FIG. 5, and at the same time, the cast slab 130 in which the head crop 170 is cut. It is advanced by the pinch roll 145 and continues along the dummy bar 140. Then, as shown in FIG. 6, the head crop 170 coupled to the head link 50 of the dummy bar 140 and the connecting rod 142 is connected to the central passage 12a of the drum 12. In this case, the front end of the Dub contacts the limit switch 80, the limit switch 80 transmits an electrical signal to the controller (not shown), the controller operates the drive cylinder 40 to wire rope (37) is pulled and the drum 12 is rotated.

Accordingly, the drum 12 rotates to rotate the head link 50 and the head crop 170 located in the passage 12a, and the dummy bar 140 and the slab 130 at the rear side thereof are stopped. State is maintained. Therefore, when the drum 12 rotates approximately 90 degrees, the head link 50 rotates 90 degrees while being connected to the dummy bar 140 through the rotating part 60, but the head link 50 The head crop 170 coupled through the connecting rod 142 is rotated while the connecting rod 142 is slid and dropped from the T-shaped groove 52 so as to be separated from the head link 50 at the same time from the drum 12. It will fall to the bottom.

Accordingly, the head crop 170 and the connecting rod 142 are separated from the head link 50 to fall, and as a result, are also separated from the dummy bar 140. In this way, when the head crop 170 is removed from the dummy bar 140, the drive cylinder 40 is operated to pull out the rod 35, so that the drum 12 is the weight 30 By returning to the original state, the passage 12a is kept horizontal.

Next, the cylinder 5 for raising and lowering the dummy bar storage unit 180 is operated to simultaneously lift the dummy bar storage unit 180 and the dummy bar 140, and accordingly, the cast piece 130 is a roller. It is possible to enter the subsequent process along the table 185.

Then, when the production operation of the cast piece 130 is drawn out as described above, the worker lowers the dummy bar storage table 180 for the next operation, the new linking rod to the head link 50 of the dummy bar 140 142 is mounted, and the dummy bar 140 is newly moved upwardly to the lower side of the mold 120 through the central passage 12a of the drum 12.

According to the present invention as described above, the head bar 170 attached to the dummy bar 140 at the beginning of the continuous casting operation, when the dummy bar 140 arrives at a predetermined position without any help, the dummy bar ( 140 to remove the head crop (170). Therefore, it is possible to obtain a useful effect improved to prevent the safety accident of the worker, to reduce the workload to greatly improve the work productivity.

Claims (4)

In the continuous casting of the billet of the small section, the dummy bar 140 automatically receives a head crop 170 attached to the tip of the dummy bar 140 for drawing the first cast 130 at the beginning of the casting operation. In the device for separating from the), one side of the dummy bar storage (180) is rotatably mounted to a drum (12) having a passage (12a) formed in the center through which the dummy bar 140 passes, the drum The upper side of the (12) is suspended vertically on the dummy bar storage (180) so that the tip of the rod 35 is connected to the weight 30 on one side of the drum 12 through a wire rope 37 A driving cylinder 40 capable of rotating the drum 12 is provided, and the front end head link 50 of the dummy bar 140 is provided with a groove 52 opened at one side at the tip to sandwich the connecting rod 142. At the rear end, the rotating part 60 is configured to rotate the head link 50 with respect to the rear dummy bar 140. When the head crop 170 and the head link 50 is positioned on the passage 12a side of the drum 12, the drum 12 is rotated by the operation of the driving cylinder 40 to rotate the head link. Automatic dummy bar head cropping device for billet manufacturing, characterized in that configured to automatically fall off the head crop (170) from (50). An arc-shaped guide hole (23a) (23b) is formed inside the front and rear support (15a) (15b) disposed on both sides of the drum (12), and the guide hole (23a). The dummy bar head for billet manufacturing, characterized in that the guide protrusions 25a and 25b protruding from the side of the drum 12 are inserted into the 23b to guide the rotation of the drum 12. Crop automatic separation device. According to claim 1, The rotating part 60 is a shaft 62 protrudes in the center of the back of the head link 50, the shaft 62 is mounted with a bearing 65, the bearing 65 is Is inserted into the T-shaped groove (67) formed on the front of the rear dummy bar 140, the projection 70 is formed on one side of the rear shaft 62 of the head link 50, the projection 70 is By being guided to the front side arc-shaped guide groove 72 of the rear dummy bar 140, when the front head link 50 is rotated about the rear dummy bar 140, a rotational movement can be made in the correct position. Dummy bar head crop automatic separation device for billet manufacturing, characterized in that configured to. According to claim 1, wherein the lower outer peripheral surface of the drum 12 is formed with a guide arc-shaped groove 19, the arc-shaped guide projection 21 on the support plate 10 is coupled to the guide arc-shaped groove 19 to be slidable. The dummy bar head crop automatic separation device for billet production, characterized in that for supporting the drum 12 to be rotatable.

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