JP2002224818A - Device for supporting ladle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the necessity of a scraping work for casting block cooled and solidified near flowing passage of a pouring hole in a ladle after casting work and to contribute to a labor-saving and rationalization in such a kind of work. SOLUTION: The upper part of side walls 8 at the right and the left sides near the flowing passage of the pouring hole 2 in the ladle L is closed with a cover part 14. This ladle is a ceramic-made ladle integrally forming engaging projections 15 at the outsides of the side walls 8 at the right and the left sides near the flowing passage of the pouring hole 2. Ladle supporting metal took K are composed of side plates 17, 18 at the right and the left sides interposingly supporting by fitting to the engaging projections 15, a cover plate 19 connectedly fixing the upper end parts of these side plates 17, 18 and a connecting band 20 holding by abutting on the outside of the bottom part near the flowing passage of the pouring hole 2 and interposingly supporting by fixing both end parts to the lower end parts of the side plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle support device used for pumping a casting water and pouring a mold.

[0002]

2. Description of the Related Art Conventionally, a ladle L used for pumping casting water and pouring it into a casting mold is made of casting, and as shown in FIG. It has a bottomed main body container 1 whose upper side is opened upward and a pouring port 2 having a U-shaped channel formed at the rear end thereof, and a scoop whose entire surface is coated. It has a form.

[0003] As shown in FIG. 1, as shown in FIG. 1, a ladder support bracket K attached to the vicinity of the spout 2 flow path of the ladder L has inner and outer plates 3 and 4 each having a bent U-shape.
And a base block 5 fixed to the lower end of the outer plate 4
And a cylindrical bearing 6 welded and fixed to the rear end of the base block 5 at right angles thereto. Reference numeral 7 denotes a reinforcing plate, which is the front and rear ends of the outer plate 4 and the base block 5.
It is welded and fixed to the front and rear upper surfaces of the.

[0004] Therefore, of the above-mentioned ladle support bracket K,
The outer plates 3 and 4 are dropped into one of the side walls 8 near the flow path of the spout 2 of the ladle L and are supported by hanging.
The bolts 10 are inserted into the through holes formed at the front and rear positions of the spacer 9 and the inner and outer plates 3 and 4 and the through holes formed at the front and rear positions of the side wall 8. It is inserted and screwed and fixed. After that, the cylindrical bearing 6 of the ladle support bracket K
Is mounted on a rotating shaft of a support arm provided in a ladle transfer device (not shown) that reciprocates between the melting holding furnace H and the mold M as shown in FIG. 2, or an automatic robot as shown in the drawing. The ladle L is attached to the swing arm A by, for example, inserting and fixing the same to the rotation shaft 11 of the swing arm A of R.

Therefore, the melting holding furnace H and the mold M shown in FIG.
The procedure for controlling the automatic robot R (or the above-described ladle transfer device) that is reciprocated between and can be freely rotated will be described. First, a swing arm A equipped with a ladle L faces a melting and holding furnace H of a casting water W that has been discharged from a cupola and stored, and the swing arm A is swing-controlled as indicated by an imaginary line in FIG. I do. Then, the ladle L rotates upward from obliquely downward, whereby the casting water W is scooped up from the front side of the main container 1.

Next, the swing arm A is lifted to support the ladle L upward, and in this state, the automatic robot R is turned or moved as shown by the solid line in FIG. The swing arm A is controlled to be inverted in the opposite manner to the above, after the ladle L is made to face the injection port 12 of the mold M, for example, by being transported. Then, the casting water W of the main container 1 is poured into the injection port 12 of the mold M from the injection port 2 at the rear end of the ladle L.
By repeatedly performing the above control operation, the operation of pouring the metal into the mold M is efficiently performed.

[0007]

By the way, when the pouring operation according to the above procedure is completed and the ladle L is cooled, the ladle L is cooled to the inside of the one side wall 8 near the pouring opening 2 flow path of the ladle L shown in FIG. The cooled casting water sticks around the hanging inner plate 3 and solidifies. If this solidified lump is left as it is and is used again for pouring work, the pouring efficiency of the next and subsequent pouring operations will naturally deteriorate, so after the end of this type of casting work, the lump is peeled off with a hammer. It is customary.

On the other hand, recently, ceramics have tended to be favored as a material for a ladle because they are light and easy to handle and have excellent work efficiency. Therefore, instead of the conventional cast ladle, a ceramic ladle is used for pouring work, but the cooled casting water is still solidified around the inner plate near the spout channel. , Removal of lumps is essential.

At this time, if the operation of removing the lump by the hammer is erroneous, a portion of the ceramic ladle near the spout channel may be damaged or broken. In general, since the product cost of the ceramic ladle is higher than that of the cast ladle, it is required to improve the ladle without causing the above-described breakage.

[0010] This eliminates the need for an inner plate of a ladder support fitting that blocks the flow of hot water at the time of pouring inside the side wall near the flow path of the ladder spout, and at the same time, stably supports the laddle by the ladder support fitting. It needs to be possible.

Therefore, the present inventor has filed Japanese Patent Application No. 11-370.
No. 908, as a ladder of a novel embodiment shown in the drawings, in a ladder including a main body container and a spout, the ladder extends from an outer portion of left and right side walls near the spout channel to a rear outer peripheral wall of the main body container. In the case of the first invention, the projecting portion for attaching the ladder support bracket is provided at the position, and in the case of the first invention, "the outer peripheral portion of the rear portion of the main container from the outer portion of the left and right side walls near the spout channel. A bearing wall is formed so as to protrude substantially in parallel with the side wall at a portion extending to the wall, and a front end of the bearing wall is joined and integrated with an outer peripheral wall of the main body container, and a rear end of the bearing wall and the side wall are connected. The invention has invented a "ladder" in which the rear wall is joined and integrated, and the vicinity of the spout channel, the bearing wall, and the upper portion of the rear wall are flush with each other by the upper wall.

Further, in the case of the second invention, the overhanging portion for mounting the ladle support bracket is defined as a “corner continuous position between the outer portions of the left and right side walls near the spout channel and the rear outer peripheral wall of the main body container. A boss projection formed with a vertical through-hole is formed so as to protrude, and the upper surface, side surfaces, and bottom surface of the boss projection are formed in a U-shape,
The inventor of the present invention has invented "a ladle" in which the upper edge of the rear outer peripheral wall of the main body container is formed flush with the upper wall from the vicinity of the spout channel and from above the boss projection.

Based on this, the present inventor has set forth the above-mentioned first method.
With regard to the ladder of the invention and the second invention, after attempting to reduce the cost by mass production, forming a large number of them,
After firing, in the case of the ceramic ladle according to the first invention, cracks were formed around the through holes indicated by reference numeral 18 shown in FIGS. 3 to 6 in the drawings of Japanese Patent Application No. 11-370908. In the case of the ladle according to the second aspect of the invention, the drawing reference numeral 24 shown in FIGS.
It has been found that cracks around the vertical through holes cause adverse effects such that the product yield is impaired at a considerable rate.

Therefore, in the present invention, in order to solve the above-mentioned problem, a ladle support fitting having a cylindrical bearing 6 in a ladle L having a main body container 1 and a spout 2 as described in claim 1 In the ladle support device to which K is attached,
The upper portions of the left and right side walls 8 in the vicinity of the spout 2 flow path of the ladle L are closed by the lid portion 14, and the engaging projections 15 are integrally formed outside the left and right side walls 8 in the vicinity of the spout 2 flow path. A ceramic ladle, wherein the ladle support fitting K is
Left and right side plates 17 and 18 which are fitted into the engagement protrusions 15 and supported by being pinched;
A lid plate 19 for connecting and fixing the upper end of the connecting plate 8 and a connecting band 20 for holding and abutting the bottom near the spout 2 flow path and fixing both ends to the lower end of the side plate. Provided a ladle support device.

According to a second aspect of the present invention, there is provided a ladle supporting apparatus in which a ladle supporting bracket K having a cylindrical bearing 6 is attached to a ladle L having a main body container 1 and a spout 2. A ceramic ladle L in which the upper portions of the left and right side walls 8 near the two flow paths are closed by the lid portion 14 and the engaging projections 15 are integrally formed outside the left and right side walls 8 near the spout 2 flow path. Then, the left and right side plates 17 and 18 are fitted into the engaging projections 15, the upper ends of the side plates 17 and 18 are fixed by the cover plate 19, and the connecting band 20 is attached to the bottom near the spout 2 flow path. This is a ladle support device which is held in contact and both ends of which are fixed to lower ends of the side plates 17 and 18.

As a result, the yield of the ceramic ladle after firing is remarkably improved, and a strong and stable ladle support with the ladle support bracket is achieved.

More specifically, in the third aspect, the engaging projection 15
The engagement recesses 16 of the side plates 17 and 18 are fitted into the recesses. In the fourth aspect, an engagement groove 27 is formed in the engagement protrusion 15, an engagement groove 29 is formed inside the side plates 17, 18, and the key 2 is provided in both engagement grooves 27, 29.
8 is fitted. According to the fifth aspect, the engagement protrusion 15 is provided.
An engagement groove 31 formed inside the side plates 17 and 18 is fitted into the engagement groove 31.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the configuration of a ladle L and a ladle support K of the first embodiment will be described with reference to an exploded perspective view shown in FIG. Ladle L is an integrally molded product made of ceramics, and the lower side has an arc shape or a spherical shape,
A bottomed main body container 1 whose upper side is opened upward and a pouring spout 2 is formed in an upper portion of a rear position of the main body container 1. An outflow passage 13 for coping with the smooth tapping of the casting water W scooped into the main body container 1 is provided on the inner inner wall surface from the rear position of the main body container 1 to the spout 2.
However, the width is gradually narrowed, and the shape is gradually reduced upward to be shallow and smooth.

Reference numeral 14 denotes a spout 2 from above the outflow passage 13.
A lid portion that closes the entire upper portion of the main container 1, which reinforces the upper portions of the right and left side walls 8 near the spout 2 flow path, and that the hot water rises when the main body container 1 tilts, particularly when pouring. To prevent overflowing.

In order to secure a firm engagement with a ladle support metal fitting K, which will be described later, an engaging projection 15 in the form of a rectangular boss is formed integrally with the upper portion of the outer position of the left and right side walls 8 for firing. Provided. The ceramic ladle L shown in FIG. 3 illustrates a case where the front and rear surfaces and the bottom surface of the engagement protrusion 15 are cut after firing the ladle, thereby providing close contact with the side plates 17 and 18 described later. Dealing with the fit.

Next, the ladle support fitting K mounted near the spout 2 flow path includes a pair of left and right side plates 17,
8, a rectangular lid plate 19 for connecting and fixing the upper ends of the side plates 17 and 18, and an arc-shaped bottom near the spout 2 flow path, and connecting and fixing the lower ends of the side plates 17 and 18. The connecting band 20 is formed by bending the band main body in an upwardly arcuate shape so as to sandwich and support the band.
A prismatic base block 5 is fixedly welded to the other side plate 18 on the outer side of the lower end of the side plate 18, and the cylindrical bearing 6 is welded to the rear end of the base block 5 orthogonally to the base block 5. It is fixed. In the above case,
The base block 5 may be replaced with a base plate (not shown) having the same thickness as the side plate 18.

Reference numeral 22 denotes screw holes formed at both front and rear ends of the side plates 17 and 18, 23 denotes through holes formed at four corners of the cover plate 19, and 24 fixes the cover plate 19 to the side plates 17 and 18. Bolts, 25 are through-holes drilled at both left and right ends of the connecting band 20, and 26 are bolts for fixing the connecting band 20, and screw holes (not shown) formed at the lower ends of the side plates 17, 18 Screwed.

When attaching the above-mentioned ladle support fitting K to the vicinity of the flow path 2 of the spout 2 of the ladle L, the front and rear end faces of the engagement protrusion 15 of the ceramic ladle K after firing are set to be substantially vertical. Further, the bottom surface of the engaging projection 15 is cut substantially horizontally in the front-rear direction. Then, the engaging recesses 16 of the side plates 17 and 18 are fitted into the cut-out engaging projections 15 so as to face them.
By covering the upper end of 8 with a cover plate 19 and screwing it in with bolts 24, the upper half near the spout 2 is pinched and supported.

Next, the arc-shaped main body of the connecting band 20 is held in contact with the outside of the arc-shaped bottom near the spout 2 flow path, and the left and right ends thereof are bolted to the side plates 17 and 18.
By screwing and fixing to the lower end portion, almost the lower half near the flow path of the spout 2 is sandwiched and supported. Thereby, the ladle support bracket K is firmly and stably attached to the ladle L.
It should be noted that the pouring operation by the ladle L with the ladle support fitting K is similarly controlled by the procedure described at the beginning of the specification, so that the repetitive description of the operation procedure is omitted here. .

[0025]

Another embodiment Next, in the case of the second embodiment shown in the perspective view of FIG. 4, an oval-shaped engagement is formed on engagement projections 15 formed on the left and right side walls 8 in the vicinity of the spout 2 flow path. Groove 27 (also called keyway)
In addition, an oval key 28 fitted in the engaging groove 27 and an engaging groove 29 of the key 28 are formed on inner surfaces of the left and right side plates 17 and 18. Other configurations are almost the same as those of the first embodiment, and thus the same reference numerals are given and the description is omitted.

Thus, the engagement protrusion 15 of the fired ladle L
First, the engaging groove 27 is previously recessed by cutting, and the surface of the engaging protrusion 15 is also cut as necessary, and then the key 28 is fitted into the engaging groove 27, and the key 2 is inserted.
8, the engagement grooves 29 of the side plates 17, 18 are fitted, and the upper ends of the side plates 17, 18 are covered with a cover plate 19 and screwed and fixed with bolts 24. The arc-shaped main body of the connecting band 20 is held in contact with the outer side of the nearby arc-shaped bottom, and both right and left ends thereof are screwed and fixed to the lower ends of the side plates 17 and 18 by bolts 26.
A slit 30 is formed on the inner surface of the key 28,
The thermal expansion of the key 28 fitted in the engagement groove 27 is dealt with.

Next, in the case of the third embodiment shown in the perspective view of FIG. 5, the engaging projections 15 shown in the first and second embodiments are formed in the concave and convex engaging grooves 31. This is because the engaging groove 31 is integrally formed with the concave and convex portions during the ladle forming, the ladle L is fired, and then the concave and convex surface is cut, or the same as the first embodiment described above. 15 are integrally formed, and after the ladle L is fired, the engaging groove 31 is cut into an uneven shape and the surface side of the uneven surface is cut. On the other hand, on the inner wall surfaces of the side plates 17 and 18, engagement grooves 32 fitted into the engagement grooves 31 are provided.
Are formed.

Therefore, the concave / convex engaging grooves 32 of the side plates 17 and 18 are fitted into the concave / convex portions of the engaging grooves 31 formed in the ladle L, and thereafter the upper end thereof is covered with the lid in the same manner as described above. By connecting with the plate 14 and connecting the lower end with the connecting band 20, the ladle support fitting K is firmly and stably attached near the spout 2 flow path.

In the above case, the base plate 21
Alternatively, the cylinder bearing 6 is fixed to the rear end of the base block 5 in an orthogonal shape, but the rear end of the other side plate 18 is formed to partially project rearward, and the cylinder is attached to the extension plate (not shown). The bearing 6 can be directly fixed orthogonally.

In the above case, the cylindrical bearing 6 has a cantilever structure fixed to the other side plate 18 side.
When the main body container 1 is of a large capacity type, a double-sided structure in which the cylindrical bearing 6 is fixed to both the left and right side plates 17 and 18 may be employed.

In the above case, the case where the ladle support metal K is inserted and fixed to the rotating shaft 11 provided on the swing arm A of the automatic robot R has been described.
In the case of a small-capacity type, a metal shaft (not shown) can be directly fitted into the cylindrical bearing 6 of the above-mentioned ladle support bracket K, and the molten metal can be supplied to the casting mold manually.

[0032]

According to the present invention, there is provided a ladle supporting apparatus in which a ladle supporting bracket K having a cylindrical bearing 6 is attached to a ladle L having a main body container 1 and a spout 2 as described above. A ceramic ladle in which the upper portions of the left and right side walls 8 near the spout 2 flow path are closed by the lid portion 14 and the engagement projections 15 are integrally formed outside the left and right side walls 8 near the spout 2 flow path. Left and right side plates 17 and 18 for fitting and supporting the ladle support fitting K in the engagement projections 15, a lid plate 19 for connecting and fixing the upper ends of the side plates 17 and 18, Since it is a ladle support device constituted by a connecting band 20 which is held in contact with the bottom near the spout 2 flow path and has both ends fixed to the lower end of the side plate and clamped and supported, a conventional casting is used. And ceramics la As shown in the figure, foreign matter is exposed near the inside of the ladle spout channel, eliminating the need for stripping and removing casting ingots that cool and solidify near the ladle spout channel after casting. And contribute to labor saving and rationalization of this kind of work.

Further, a spout 2 for ceramic ladle L
An engaging projection 15 is formed in the vicinity of the flow path, the left and right side plates 17 and 18 are fitted into the engaging projection 15, and the upper end thereof is fixedly connected with the cover plate 19 and the lower end thereof is fixedly connected with the connecting band 20. It is also excellent for stable support of the ladle.

Further, in the case of the ceramic ladles described in the specification and drawings of Japanese Patent Application No. 11-370908 according to the prior invention of the present inventor, cracks are formed in the through-holes during firing and the yield is reduced. Although the present invention may be damaged, in the case of the present invention, cracks and the like do not occur, and various effects such as satisfaction of cost reduction by mass production are brought about.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional example.

FIG. 2 shows a use state 1 in a case where a ladle is attached to a swing arm of an automatic robot, and the swing arm is turned between a melting and holding furnace for casting metal and a mold.
It is a perspective view showing an example.

FIG. 3 is a perspective view showing a state in which a ladle according to the first embodiment and a support bracket thereof are separated.

FIG. 4 is a perspective view showing a state in which a ladle according to a second embodiment and a supporting bracket thereof are separated.

FIG. 5 is a perspective view showing a state in which a ladle according to a third embodiment and a supporting bracket thereof are separated.

[Explanation of symbols]

 L Ladle R Automatic Robot (or Ladle Transfer Device) A Swing Arm K Ladle Support H Melting Holder M Mold 1 Main Container 2 Spout 3 Inner Plate 4 Outer Plate 5 Base Block 6 Cylinder Bearing 7 Reinforcement Plate 8 Side Wall 9 Spacer 10 Bolt 11 Rotating shaft 12 Inlet 13 Outflow passage 14 Lid 15 Engagement projection 16 Engagement recess 17, 18 Side plate 19 Lid plate 20 Connection band 22 Screw hole 23, 25 Through hole 24, 26 Bolt 27, 29, 31 , 32 engagement groove 28 key 30 slit

Claims (5)

[Claims] 1. A ladle support device comprising a ladle L having a main body container 1 and a spout 2 and a ladle support fitting K having a cylindrical bearing 6 attached thereto. A ceramic ladle L in which the upper portions of the left and right side walls 8 are closed by the lid portion 14 and the engaging projections 15 are integrally formed outside the left and right side walls 8 near the spout 2 flow path. The left and right side plates 17, 1, which support the metal fitting K by being fitted into the engaging projection 15 and sandwiching the metal fitting K, are supported.
8 and a lid plate 19 for connecting and fixing the upper ends of the side plates 17 and 18 to abut on the outside of the bottom near the spout 2 flow path, and fix both ends to the lower end of the side plate. A ladle support device comprising: a connection band 20 for sandwiching and supporting. 2. A ladle support device comprising a ladle L having a main body container 1 and a spout 2 and a ladle support fitting K having a cylindrical bearing 6 attached thereto. A ceramic ladle L in which the upper portions of the left and right side walls 8 are closed by a lid portion 14 and engaging projections 15 are integrally formed outside the left and right side walls 8 near the spout 2 flow path. Left and right side plates 1 on protrusion 15
7 and 18 are fitted, the upper ends of the side plates 17 and 18 are fixed by the cover plate 19, and the connecting band 20 is held in contact with the outside of the bottom near the spout 2 flow path. A ladle support device fixed to lower ends of 17, 18. 3. A side plate 17, 1
The ladle supporting device according to claim 1 or 2, wherein the engaging recesses (16) of (8) are fitted. 4. An engagement groove 27 is formed in the engagement projection 15, an engagement groove 29 is also formed inside the side plates 17, 18, and a key 28 is fitted in both engagement grooves 27, 29. The ladle support device according to claim 1 or 2, wherein 5. An engaging groove formed in the engaging projection, and an engaging groove formed in the side plates and fitted into the engaging groove. Or the ladle support device according to claim 2.