JP4514974B2 - Immersion nozzle outer surface processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an immersion nozzle outer surface processing apparatus, and more particularly, to an immersion nozzle outer surface processing apparatus that simultaneously processes both outer surfaces of the immersion nozzle with a pair of cutters that move following a tracing jig.
[0002]
[Prior art]
In recent years, a thin plate aging rolling manufacturing process using medium-thick slab continuous casting has been put into practical use and its scale is expanding. The immersion nozzle 31 generally used in this manufacturing process as shown in FIG. 3 has a flat immersion nozzle lower portion 32 in relation to the thickness of the mold connected to the immersion nozzle 31, and the molten steel flow path. Accordingly, the flow path lower portion 33a has a flat shape so that the flow rate of the molten steel does not decrease accordingly.
[0003]
The manufacturing method of the immersion nozzle 31 having such a shape is that a molded body is made from a refractory material using a rubber mold and a core, a part of the molded body is cut out to provide a discharge port 34, and the molded body is fired. The immersion nozzle is manufactured.
[0004]
However, since the fired immersion nozzle is molded using a rubber mold, it is difficult to obtain an accurate dimension, and it is difficult to accurately measure the expansion rate of the refractory material. For this reason, in order to perform dimension adjustment with the mold provided continuously to the immersion nozzle, the parallel flat surface portion 35a of the outer surface of the immersion nozzle 31 and the outer surface 35 such as the inclined inclined portion 35b as shown in FIG. It is necessary to cut to a predetermined size.
[0005]
However, in the conventional cutting process of the outer surface of the immersion nozzle after baking, each outer surface is sequentially cut using a single-blade cutting machine, and the productivity is low.
[0006]
In addition, it is difficult to align the center in such processing for each surface, and it takes time to change the position by handling, and it is difficult to make the thickness of the flat portion 35a uniform with respect to the molten steel flow path 33. Further, it is necessary to process the discharge port 34 first, but since the reference surface is not fixed, the discharge port must be processed in a groping state, the processing time is long, and the workability is poor. Productivity was low.
[0007]
[Problems to be solved by the invention]
Therefore, there has been a demand for an immersion nozzle outer surface processing apparatus that can process the immersion nozzle with high productivity.
[0008]
The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide an immersion nozzle outer surface processing apparatus capable of processing an immersion nozzle with high productivity.
[0009]
[Means for Solving the Problems]
The invention of claim 1 has been made in order to achieve the above object, a nozzle movable carriage which moves along the carriage guide member and attached to the nozzle moving carriage, the work immersion nozzle is fitted, the molten steel flow A support member having a shape similar to a road, a jig attached to the nozzle moving carriage, having a contour having the same inclination as the inclined portion of the nozzle, and movable in a direction perpendicular to the moving direction of the nozzle moving carriage A pair of cutter moving members provided, a pair of cutters each attached to the cutter moving member and driven by an electric motor to process the outer surface of the immersion nozzle to be processed, and provided to the cutter moving member, a pair of driven members to follow the contour of the moving time of the copying jig nozzle moving carriage, always cutter moving member provided between the pair of cutter moving member Biasing means for biasing in a direction, and a position regulating means for regulating the inward movement of said pair of cutter moving member, with the movement of the nozzle carriage, said nozzle moving carriage of said pair of cutters moving to move perpendicular to the direction in which the directions simultaneously processed vital both outer surfaces of the workpiece immersion nozzle, with the movement of the copying jig, by moving the pair of cutter following the said contour, said pair The gist of the present invention is an immersion nozzle outer surface processing apparatus characterized in that it is processed into an inclined portion of the nozzle having the contour by a cutter .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an immersion nozzle outer surface processing apparatus according to the present invention will be described below with reference to the accompanying drawings.
[0011]
FIG. 1 is a side view of an embodiment of an immersion nozzle outer surface processing apparatus according to the present invention, and FIG. 2 is a plan view.
[0012]
As shown in FIGS. 1 and 2, an immersion nozzle outer surface processing apparatus 1 is provided with a base 2 and an immersion nozzle 31p (moving on the base 2) (unprocessed immersion nozzle 31 as shown in FIG. 3). The product is provided with a nozzle moving unit 3 that moves the cutter 4 in a direction orthogonal to the moving direction of the nozzle moving unit 3 provided on the base 2. Yes.
[0013]
The base 2 is formed in a rectangular parallelepiped shape by assembling angle members, and a carriage guide member, for example, a rail 11 is provided in the longitudinal direction of the base 2.
[0014]
The nozzle moving unit 3 is placed on the rail 11 through a stepped roller 12 so as to be movable back and forth. The nozzle moving carriage 13 moves along the rail 11, and is attached to the nozzle moving carriage 13 and processed. It has a support member 14 to which the immersion nozzle 31p is fitted and a jig 15 that is attached to the nozzle moving carriage 13. The support member 14 is for supporting the immersion nozzle 31p when cutting the outer surface 35p of the immersion nozzle 31p, that is, the flat portion 35pa and the inclined portion 35pb, and is inserted into the molten steel flow path 33p of the immersion nozzle 31p. The shape is similar to the molten steel flow path 33p.
[0015]
Further, the support member 14 is fixed to the base 2 and is detachably attached via the attachment member 16 so that it can be appropriately changed to a support member having an optimum shape according to the shape of the immersion nozzle to be processed. Yes.
[0016]
The profile jig 15 is attached to the tip of the nozzle moving carriage 13 in the traveling direction, and its outline 15a (outer shape) has the same inclination as the inclined part 35pb of the immersion nozzle 31p. According to the shape of the immersion nozzle to be processed, the profile jig 15 having a suitable contour 15a (outer shape) is selectively attached and used.
[0017]
Further, the cutter moving unit 5 is movable on the base 2 via a pair of cutter guide members 21 extending perpendicular to the moving direction of the nozzle moving carriage 13 and on the cutter guide members 21 via rollers 22. And a pair of cutter moving carriages 23 mounted on the cutter carriage 23, and each of which is attached to the cutter moving carriage 23 and driven by the electric motor 24 to process the outer surface 35p of the immersion nozzle 31p. Provided between the pair of cutters 4 and the cutter moving carriage 23, and provided between the pair of driven members 25 and the pair of cutter moving carriages 23 that follow the contour 15 a of the tracing jig 15 when the nozzle moving carriage 13 moves. The urging means 26 for constantly urging the cutter moving carriage 23 in the inward direction and the inward movement of the pair of cutter moving carriages 23 are regulated as shown in FIG. And a position regulating means 27 shown.
[0018]
The follower member 25 has a cylinder shape and is pivotally supported by the cutter moving carriage 23. When the nozzle moving carriage 4 moves, the follower member 25 follows the contour 15a of the follower jig 15, and a pair of the follower members 15 is moved by the movement of the follower jig 15. The cutter 4 is moved in a direction orthogonal to the moving direction of the nozzle moving carriage 13, and the outer surface 35p of the immersion nozzle 31p can be processed simultaneously.
[0019]
Further, the urging means 26 is, for example, a spring and is bridged between the two cutter moving carriages 23 and constantly urges the cutter moving carriage 23 inward. As shown in FIG. 2, the position restricting means 27 is composed of, for example, a movement restraining plate 27a and a fixing screw 27b, and by fixing the movement restraining plate 27a in accordance with the scale engraved on the cutter guide member 21. The distance g between the pair of cutters 4 and the distance g / 2 from the center line c in the longitudinal direction of the cutter 4 and the base 2 are kept at predetermined values, and the plane portion of the immersion nozzle 31 processed as shown in FIG. The width 36w of 35a can be kept at a predetermined value.
[0020]
Next, the manufacturing method of the immersion nozzle using the immersion nozzle outer surface processing apparatus concerning this invention is demonstrated.
[0021]
First, a method for forming a molded body of the immersion nozzle 31 having a shape as shown in FIG. 3 will be described. In the method of manufacturing a molded body, a rubber mold having an opening provided with a core is prepared, and a part of the rubber mold is filled with a refractory material from the opening. Further, the refractory material filled in the rubber mold is pressed through a rubber mold by an isostatic press, and the molded body of the immersion nozzle is formed by demolding.
[0022]
Further, a part of the molded body is excised to provide a discharge port, and the molded body is baked to produce an immersion nozzle.
[0023]
The immersion nozzle manufactured and fired as described above is attached to an immersion nozzle outer surface processing apparatus 1 as shown in FIGS.
[0024]
The immersion nozzle 31p is attached by externally fitting the fired immersion nozzle 31p to the support member 14 attached to the nozzle moving carriage 13 in advance via the attachment member 16. At this time, if necessary, it is firmly fixed by elastic packing or the like.
[0025]
Further, according to the width 36w of the flat portion 35a of the submerged nozzle 31 as shown in FIG. 3, the movement restraining plate 27a is aligned with the scale engraved on the cutter guide member 21, as shown in FIG. Secure with 27b. When the movement restraining plate 27a is fixed, each cutter moving carriage 23 is always biased inward, but the movement of the cutter moving carriage 23 is suppressed, and the distance g between the pair of cutters 4 and the cutters are reduced. 4 and the distance g / 2 from the center line in the longitudinal direction of the base 2 are kept at a predetermined value. Further, the electric motor 24 is energized to rotate the cutter 4.
[0026]
Thereafter, the attachment member 16 is manually pushed to advance the nozzle moving carriage 13 and come into contact with the cutter 4 from the tip 37p of the immersion nozzle 31p. After the contact, the nozzle moving carriage 13 is further advanced to start cutting the flat portion 35pa of the immersion nozzle 31p.
[0027]
Subsequently, the attachment member 16 is manually pushed, the nozzle moving carriage 13 is further advanced, the cutting is advanced, and the flat portion 35a is formed. As this cutting proceeds, the contour 15a of the jig 15 provided on the nozzle moving carriage 13 comes into contact with the driven member 25 provided on the cutter moving carriage 23. When the contour 15a comes into contact with the driven member 25, the driven member 25 follows the contour 15a, and the cutter moving carriage 23 is moved outwardly against the urging means 26 according to the following. By the movement of the nozzle moving carriage 13 and the movement of the cutter moving carriage 23, an inclined portion 35b of the immersion nozzle 31p having a shape following the contour 15a is formed.
[0028]
Thus, by using the immersion nozzle outer surface processing apparatus 1, the flat portion 35pa and the inclined portion 35pb of the immersion nozzle 31p can be performed by a single cutting step.
[0029]
Furthermore, the discharge port 34p is processed, but the width 36w between the flat portions 35a of the immersion nozzle 31 is accurately cut by the above cutting step, and the distance from the center line of the immersion nozzle 31 to both flat portions 35a is increased. Since they are equally cut, the discharge port 34 can be easily formed at the same position from the flat portion 35a with reference to both flat portions 35a.
[0030]
In the above-described embodiment, the nozzle moving carriage is moved by hand. However, when processing a larger amount, the nozzle movement is automatically performed by using a drive motor and a ball screw rotated by the drive motor. The carriage may be moved.
[0031]
【The invention's effect】
The immersion nozzle outer surface processing apparatus according to the present invention can provide an immersion nozzle outer surface processing apparatus that can process the immersion nozzle with high productivity.
[0032]
That is, a pair of cutters are moved in a direction perpendicular to the moving direction of the nozzle moving carriage by the movement of a jig mounted on the nozzle moving carriage on which the processing immersion nozzle is placed and moved. Since the outer surface can be processed at the same time, the outer surface can be performed by a single cutting process, and the productivity can be significantly improved as compared with the conventional method of cutting each outer surface sequentially using a single-blade cutting machine. it can. In addition, the width between the flat portions of the immersion nozzle is accurately cut, and the distance from the center line of the immersion nozzle to both flat portions is equally cut. Therefore, it can be easily formed at the same position, the processing time can be shortened, and the productivity can be improved.
[Brief description of the drawings]
FIG. 1 is a side view of an embodiment of an immersion nozzle outer surface processing apparatus according to the present invention.
FIG. 2 is a plan view of an embodiment of an immersion nozzle outer surface processing apparatus according to the present invention.
FIG. 3 is a perspective view of a commonly used immersion nozzle.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Submerged nozzle outer surface processing apparatus 2 Base 3 Nozzle moving part 4 Cutter 5 Cutter moving part 11 Rail 12 Stepped roller 13 Nozzle moving carriage 14 Support member 15 Tracing jig 15a Contour 16 Mounting member 21 Cutter guide member 22 Roller 23 Cutter movement Carriage 24 Electric motor 25 Drive member 26 Energizing means 27 Position restricting means 27a Movement restraining plate 27b Fixing screw 31p Immersion nozzle 35 Outer surface 35a Flat surface portion 35b Inclined portion 35w Width g Interval

Claims (1)

A nozzle moving carriage that moves along a carriage guide member;
A support member having a shape similar to the molten steel flow path, which is attached to the nozzle moving carriage and is fitted with a work immersion nozzle,
A jig that is attached to the nozzle moving carriage and has a contour having the same inclination as the inclined portion of the nozzle ;
A pair of cutter moving members movably provided in a direction orthogonal to the moving direction of the nozzle moving carriage;
A pair of cutters each attached to the cutter moving member and driven by an electric motor to process the outer surface of the workpiece immersion nozzle;
Each is provided on the cutter moving member, and a pair of driven members to follow the contour of the moving time of the copying jig of the nozzle movable carriage,
A biasing means provided between the pair of cutter moving members and constantly biasing the cutter moving member inward;
Position regulating means for regulating inward movement of the pair of cutter moving members;
With the movement of the nozzle carriage, with said pair of cutters at the same time working life and death of both the outer surface of the workpiece immersion nozzle moves in the direction perpendicular to the moving direction of the nozzle moving carriage, the movement of the copying jig, An immersion nozzle outer surface processing apparatus, wherein the pair of cutters are moved in accordance with the contour, and are processed into an inclined portion of the nozzle having the contour by the pair of cutters .

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