JPH0610023A - Slag block automatic insertion device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a device capable of automatically inserting a slag block into a hot water outlet of a converter and reliably preventing slag outflow at the initial stage of tapping. [Structure] The slag block 9 can be attached to and detached from the arm 10, and the block 9 is inserted into the tap 2 of the converter 1 as the arm 10 advances in the direction of arrow α.
The guide frame 20 holding the arm 10 is held by a carriage 30 so as to be able to move up and down, and the carriage 30 is mounted on a mount 40 so as to be able to travel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic slag block inserting device, and more particularly to a device for automatically inserting a slag block into a taphole immediately before tapping from a converter.

[0002]

2. Description of the Related Art Generally, steel refined in a converter is sent to a secondary refining process such as RH degassing or a solidification process such as continuous casting, which is the next step. Therefore, as shown in FIG.
By tilting to a substantially horizontal state, it is transferred from the tap 2 to the ladle. By the way, in the converter 1, the slag 4 containing impurities remains above the refined steel 3, and FIG.
There is a problem that the slag 4 flows out into the ladle at the initial stage of tapping shown in Fig. 10 and at the final stage of tapping after the steel 3 flows out at the tilting position shown in Fig. 10C.

Conventionally, as a method for preventing the outflow of slag, a method of inserting a stopper into the tap hole from the inside of the converter (Japanese Examined Patent Publication No. 6)
1-60886), a method of injecting compressed gas from the outside of the converter to the tap hole (Japanese Patent Publication No. 55-47311).
Various measures have been incorporated. However, all of these measures are related to the final stage of tapping, and no effective measures have been seen to prevent slag outflow at the beginning of tapping. However, a heat-expandable and heat-softenable slag block containing ceramics as a main component is provided (refer to Japanese Patent Laid-Open No. 11262/1990), and when the converter 1 is tilted, this block is preliminarily provided to the tap hole 2. If it is inserted, it is possible to prevent the slag from flowing out at the beginning of tapping. This type of block expands when it is inserted into the tap 2 and closes the tap 2. When the converter 1 is tilted, it softens at the temperature of the steel 3 and separates from the tap 2. However, the insertion of the slag block has to rely on human labor, which is not only inefficient in work but also high in risk.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an apparatus capable of automatically inserting a slag block into a taphole of a converter and reliably preventing slag outflow at the initial stage of tapping. To provide. In order to achieve the above object, the slag block automatic insertion device according to the present invention is an arm member with which the slug block can be attached to and detached from the tip, and the arm member is moved forward and backward in the longitudinal direction, and the slag block is converted by the forward movement. A first driving means for inserting the arm member into the hot water outlet, and a second driving means for moving the arm member up and down.
And a third drive means for moving the arm member in a direction substantially orthogonal to the forward direction.

The slag block is chucked at the tip of the arm member and is inserted into the hot water outlet of the converter by advancing the arm member by the first driving means. There are variations in the position (height and lateral direction) of the hot water outlet, and with respect to this variation, the arm members are moved up and down or moved on the horizontal plane by the second drive means and the third drive means. Adjust to match the tap.

According to the above apparatus, the slag block can be automatically and reliably inserted into the hot water outlet of the converter, and the slag outflow at the initial stage of tapping can be prevented. Moreover, the workability is remarkably improved and the danger is eliminated as compared with the case where the worker inserts it by hand. In addition, in the slag block automatic insertion device according to the present invention, it is preferable to provide block supply means for supplying the slag blocks one by one to a predetermined position.
With this, the supply of the slag block, the chucking by the arm member, and the insertion into the tap hole can be completely automated.
In this case, the third driving means may be used to move the arm member between the block supply position and the block insertion position.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an automatic slag block inserting device according to the present invention will be described below with reference to the accompanying drawings. In FIG. 1 and FIG. 2, the slug block automatic insertion device includes an arm 10 for chucking the slug block 9.
A guide frame 20 that holds the arm 10 so that it can move forward (in the direction of arrow α) and backward, a carriage 30 that holds the guide frame 20 so that it can move up and down, and a carriage 30 that moves forward (arrow β).
Direction) and a pedestal 40 that is supported so as to be retractable, and a supply unit 50 that supplies the slag blocks 9 to the supply position FP one by one.

The insertion device is installed on the converter 1 through a heat insulating wall 5, and a door 6 is mounted on the heat insulating wall 5 at the same height as the tap 2 so as to be opened and closed by a cylinder (not shown). There is. In FIGS. 3 and 4, the arm 10 is in the shape of a square pipe, and a chuck 12 is attached to the tip of a rod 11 that is integrally provided coaxially with the arm 10.
An unillustrated air cylinder is installed at the rear end of the arm 10, and the chuck 12 is opened and closed by the air cylinder. In addition, the arm 10 is a guide frame 2
It is sandwiched by the guide roller 21 provided at 0 from the up and down direction, and guided forward and backward in the direction of arrow α. A pinion (not shown) driven by a motor 22 attached to the guide frame 20 meshes with a rack 13 fixed to the lower portion of the arm 10. Therefore, this motor 2
When the arm 10 moves forward and backward by rotating the slag block 9 forward or backward, the stroke ST (see FIG. 2) of the arm 10 is long enough to complete the insertion of the slag block 9 from the initial position into the tap 2 of the converter 1. It is said that.

The carriage 30 holds the guide frame 20 in a vertically movable manner via a screw jack mechanism 31 on a shaft portion 23a of a bracket 23 projecting from the guide frame 20. The motor 32 provided on the carriage 30 has a drive shaft 33.
It is connected to the screw jack mechanism 31 via. Therefore, by rotating the motor 32 forward or backward, the arm 10 moves up and down together with the guide frame 20.
This elevating / lowering moves the arm 10 from the insertion position IP to the block supply position FP of the supply unit 50 described below, in order to adjust the arm 10 to the height of the tap hole 2 of the converter 1. Is done for. A post 24 is provided on the guide frame 20 so as to be adjacent to the bracket 23. The post 24 is slidably inserted into a guide member 34 provided on the carriage 30 so that the guide frame 20 can be smoothly moved up and down.

The pedestal 40 is erected in a direction orthogonal to the arm 10, and a trolley 30 is mounted on a rail 41 laid on the pedestal 40.
Wheels 35 are mounted. A motor 36 provided on the carriage 30 is connected to a pair of wheels 35 located in the upper part of FIG. 4 via a drive vehicle 37, and the motor 36 allows the carriage 30 to travel in the arrow β direction or the opposite direction. is there. This traveling is performed to move the arm 10 from the insertion position IP to the block supply position FP as shown in FIG.

5, 6, and 7, the block supply unit 50 comprises a stock frame 51 capable of stocking a plurality of slag blocks 9, a vertical frame 54, a supply plate 55, and a motor 56. There is. Supply plate 55
Is guided by the guide roller 57 and moves along the vertical frame 54 from the block standby position WP to the block supply position F.
It can be raised and lowered to P. A chain (not shown) is stretched over sprockets 58a and 58b provided on the upper and lower portions of the vertical frame 54, and the sprockets 58a are connected to a motor 56.

On the other hand, the stock frame 51 is installed with a slight inclination toward the supply plate 55 waiting at the bottom,
The placed slag block 9 can roll by its own weight.
At the tip of the stock frame 51, the first cylinder 52a
Stopper 53a and second cylinder 52 driven by
A second stopper 53b driven by b is installed.
In FIG. 7, the stoppers 53a and 53b are normally raised, the first stopper 53a regulates the first block 9a, and the second stopper 53b regulates the second block 9b and subsequent blocks. . Then, when the first stopper 53a descends, the first block 9a moves to the supply plate 55.
Roll over. After that, when the first stopper 53a is raised and the second stopper 53b is lowered and raised, the block on the stock frame 51 is advanced by one pitch. The block transferred onto the supply plate 55 is lifted to the supply position FP by rotating the motor 56 in the forward direction, and is chucked at the tip of the arm 10 here.

Next, the operation of the insertion device will be described with reference to the time charts of FIGS. First, as a preliminary work, the required number of slag blocks 9 are placed on the stock frame 51 in one refining process. As a preliminary operation, the first slag block 9 is placed on the supply plate 55, raised to the supply position FP, and chucked at the tip of the arm 10. Further, the next slag block 9 is made to stand by at the supply position FP.

When the tapping operation from the converter 1 is started, the door 6 is first opened, and the motor 22 is driven to rotate in the normal direction at a high speed, whereby the arm 10 advances in the direction of arrow α. When the slug block 9 moves forward to 4/5 of its stroke ST, the motor 22 is switched to the low speed forward drive, and thereafter the arm 10 moves forward at a low speed. Next, the chuck 12 is opened and the arm 10 is retracted. This means that the slag block 9 has been inserted into the hot water outlet 2. The retreat here is performed at high speed immediately before the arm 10 returns to the initial position, and the door 6 is closed as the arm 10 retreats.

After that, by driving the motor 36 in the reverse direction, the carriage 30 moves backward from the insertion position IP to the supply position FP in the direction opposite to the arrow β. This backward movement is also driven at high speed until just before stopping. Next, the motor 22 is driven in the normal direction at a low speed, the arm 10 is slightly advanced, and the chuck 12 is brought into contact with the next slug block 9 waiting at the supply position FP.
Then, the chuck 12 is closed to chuck the slag block 9, the arm 10 is retracted at a low speed, and the motor 36 is driven in the normal direction to switch the carriage 30 to a high speed in the direction of the arrow β and to a low speed immediately before stopping to move forward. Let As a result, the arm 10 stands by at the insertion position IP with the slug block 9 held at the tip.

At the same time when the carriage 30 starts to move forward, the motor 56
Is reversely driven, the supply plate 55 is lowered to the standby position WP, and the first stopper 53a is lowered. As a result, the slag block 9 on the stock frame 51 is transferred onto the supply plate 55. Next, the motor 56 is driven in the normal direction to supply the supply plate 5
5 is raised to the supply position FP, and is made to stand by here. Further, the first stopper 53a is raised, and the second stopper 53b is lowered and raised, so that the stock frame 5
The slag block 9 on 1 is advanced one pitch.

The above operation is repeated for each tapping operation. The automatic slag block inserting device according to the present invention is not limited to the above-mentioned embodiment, but can be variously modified within the scope of the gist thereof. In particular, the configuration of the slag block supply unit 50 is arbitrary, and a swingable link mechanism may be used as a means for moving the supply plate 55 from the block standby position WP to the supply position FP for the arm 10. Also, the arm 10 and the guide frame 2
0, the configuration of the carriage 30 and the respective driving means or operation procedures can be arbitrarily changed according to the work environment.

[Brief description of drawings]

FIG. 1 is a plan view showing the outline of an automatic insertion device that is an embodiment of the present invention.

FIG. 2 is a front view showing the outline of the automatic insertion device.

FIG. 3 is a front view showing an arm, a guide frame, a carriage, and a gantry.

FIG. 4 is a plan view of FIG.

FIG. 5 is a plan view of a block supply unit.

6 is a front view of FIG.

7 is a right side view of FIG.

FIG. 8 is a time chart showing the operation procedure, showing the first half.

FIG. 9 is a time chart showing the operation procedure, showing the latter half.

FIG. 10 is an explanatory view of tapping work from a converter.

[Explanation of symbols]

 1 ... Converter 2 ... Hot water outlet 9 ... Slag block 10 ... Arm 12 ... Chuck 20 ... Guide frame 22 ... Arm drive motor 30 ... Truck 32 ... Guide frame lifting motor 36 ... Truck running motor 40 ... Frame 50 ... Slag block supply unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroaki Tsuzuri, Inoue Hiroaki, 1-9-1, Jokoji, Amagasaki, Hyogo Prefecture, Osaka Fuji Kogyo Co., Ltd. (72) Inventor, Shoji Imaoka 1-9-1, Jokoji, Amagasaki, Hyogo Osaka Fuji Industry Co., Ltd.

Claims (3)

[Claims] 1. A slag block automatic insertion device for automatically inserting a heat-expandable and heat-softenable slag block into a hot water outlet of a converter, wherein the slag block has a removable arm member at its tip. A first drive means for advancing and retracting the arm member in the longitudinal direction thereof and inserting the slag block into a taphole of the converter by the forward movement; a second drive means for elevating and lowering the arm member; A slug block automatic insertion device, comprising: a third drive means for driving the arm member in a direction substantially orthogonal to the forward movement direction thereof. 2. A block supply means for supplying the slag blocks one by one to a predetermined position, wherein the third drive means moves the arm member between a block supply position and a block insertion position. The slag block automatic insertion device according to claim 1, wherein 3. A guide frame for holding the arm member so as to be able to move forward and backward, a carriage for holding the guide frame so as to be able to move up and down, and a frame for supporting the carriage so that the carriage can travel. The slag block automatic insertion device according to claim 1.