JP2698191B2 - Pouring equipment - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial application field) The present invention relates to a pouring apparatus for pouring a molten metal by tilting a ladle.

(Prior Art) As shown in FIG. 6, a ladle 1 is turned around a tilting support shaft 2 in a direction indicated by a two-dot chain line, and molten metal is poured from a tap hole 3 into a hanging weir 4. By supplying a fixed amount and pulling up the stopper 6 inserted into the nozzle 5 of the hanging weir 4,
It is common practice to pour a fixed amount of molten metal from the nozzle 5 into the mold 7.

The ladle 1 that has supplied the molten metal to the hanging weir 4 in a fixed amount is returned to the direction shown by the solid line as quickly as possible so that the ladle 1 can be quickly drained, and an accurate pouring amount can be obtained.

As an invention made to this effect, Japanese Patent Laid-Open Publication No.
There is one disclosed in Japanese Patent No. 8531. In the invention described in this publication, a hydraulic cylinder is provided in a link mechanism for rotating a tilting support shaft of the ladle, and the hydraulic cylinder is used to tilt the ladle back to an angle required for hot water draining.

In the invention described in this publication, hydraulic oil is discharged from the hydraulic cylinder to the tank by the weight of the ladle by opening a solenoid valve between the hydraulic cylinder and the tank, and the ladle is quickly returned. .

(Problems to be Solved by the Invention) As described above, the conventional quick-return mechanism does not actively drive the ladle, but only returns the ladle relatively quickly than at the time of pouring. Instead, it is necessary to forcibly remove the hot water at the outlet of the ladle in order to ensure a truly accurate quantitative pouring.

It is an object of the present invention to instantly forcibly raise the tapping port of a ladle at the time of hot water drainage so that truly accurate quantitative pouring can be performed.

[Constitution of the Invention] (Means for Solving the Problems) The present invention relates to a pouring device that tilts a ladle by a ladle driving mechanism and pours water from a taphole located in front of the ladle. A tilting spindle disposed on both sides of the hot-water outlet of the pan and serving as a fulcrum when the ladle is tilted, a boiler frame rotatably supporting the tilting spindle, and a tilting spindle as the tilting spindle A draining shaft that is rotatably supported at the rear by the draining shaft, and a draining actuator that forcibly rotates the draining frame at a position closer to the draining shaft than the tilting spindle with the draining shaft as a fulcrum. It is provided.

(Operation) In the present invention, at the time of pouring, the pouring frame is fixed by locking the pouring actuator, and the ladle is tilted by the ladle driving mechanism. At the moment when the metering operation is completed, the dipping actuator is operated to forcibly rotate the dipping frame around the dipping support shaft, and the tilting support shaft supported by this drip frame is instantly raised. Then, the tapping port of the ladle located between the tilting spindles on both sides is forcibly raised to the draining level, and the draining is completed instantaneously. In particular, the draining frame is rotatably supported by the draining spindle behind the tilting spindle,
The forging shaft is used as a fulcrum and the forging frame is forcibly rotated by the on-off actuator at a position closer to the on-off shaft than the tilting support shaft. The moving speed of the tilting support shaft as a fulcrum is higher, and the tap hole between the tilting support shafts is returned at a high speed in the direction of hot water draining.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to the embodiment shown in FIGS. 1 to 5.

As shown in FIGS. 1 and 2, a fixed frame
A pair of receiving plate parts 12 attached to 11 are provided with a hot water supporting shaft 14 by a shaft mounting part 13, and the hot water frame 15 is rotatably supported by the hot water supporting shaft 14 via a bearing 16, First
As shown in FIG. 3 and FIG. 3, between the fixed frame 11 and the draining frame 15, a pair of draining actuators ( A hydraulic cylinder 17 is provided via mounting plates 18 and 19.

As shown in FIG. 2 and FIG. 3, the boiler frame 15 is formed in a U-shape when viewed from the front and the front, and as shown in FIG.
On the upper side of 15a, a convex portion 15b to which the draining shaft 14 and the draining actuator 17 are attached is integrally formed, and further, an arm portion 15c protrudes forward.

As shown in FIGS. 1 to 3, a ladle support (frame structure) 21 is disposed inside the boiler frame 15, and the ladle support 21 is a pair of the ladle support 15. Arm
It is rotatably supported by a pair of tilt support shafts 23 mounted on the bearing 15c via bearings 22.

As shown in FIGS. 1 and 3, the ladle support 21 locks the engaging portion 25 of the ladle 24. The ladle 24 is formed in a fan shape when viewed from the side, and is a key end portion of the fan shape, and a second portion between the pair of tilt support shafts 23.
A tap hole 26 is provided as shown in FIGS.
A hot water port 27 is provided at the rear. The engaging portion 25 is detachably attached to the ladle support 21 via a positioning pin or the like not shown. When the ladle 24 is removed from the ladle support 21, the wire is hung on the hook 29 attached to the engaging portion 25 and the lid 28 and lifted by a crane or the like.

A ladle driving mechanism 31 for tilting the ladle 24 together with the ladle support 21 is provided. As shown in FIGS. 2 and 3, the ladle driving mechanism 31 has a fan-shaped side plate 33 integrally attached to the side surface of the ladle support 21 by the left tilt support shaft 23a and the mounting shaft 32. As shown in FIG. 1, a chain 35 connected to the lower end mounting hole 34 of the sector side plate 33 is drawn upward through the peripheral surface of the sector side plate 33, and is wound by a servomotor 36. drum
Wound around 37.

By rotating the servo motor 36 forward or backward, the chain 35 is wound or unwound, and the sector side plate 33 is rotated.
Is rotated about the tilting support shaft 23a, and the ladle support 21 and the ladle 24 integrated with the sector-shaped side plate 33 are rotated about the pair of tilting support shafts 23 as fulcrums.

Next, the operation of this embodiment will be described with reference to FIGS.

As shown in FIG. 4, when pouring from the ladle 24 into the hanging weir 4 in which the nozzle 5 is closed by the stopper 6, the pouring frame 17 is locked and the pouring frame 17 is locked. Fix 15 In this state, the chain 35 of the ladle driving mechanism 31 shown in FIG.
Ladle 24 is tilted counterclockwise around 23 as a fulcrum. The tilting speed is controlled to increase or decrease as shown in FIG.

Then, the level 41 immediately before the quantification of the hanging weir 4 shown in FIG.
When the molten metal has risen to this point, it is detected by the first sensor 42, the servo motor 36 of the ladle driving mechanism 31 is reversed, the chain 35 is unwound, and the ladle 24 is returned clockwise in FIG. Since this movement is not fast as indicated by A in FIG. 5, pouring from the ladle 24 is not immediately stopped.

Further, when the molten metal rises to the fixed level 43 of the hanging weir 4 shown in FIG. 4, the molten metal is detected by the second sensor 44, and the draining actuator 17 is operated at a high speed in the reducing direction. Thus, the draining frame 15 instantaneously rotates clockwise about the draining support shaft 14 in FIG. 1 to instantly raise the tilting support shaft 23 supported by the draining frame 15. . For this reason, the tap hole 26 of the ladle 24 located between the tilting spindles 23 on both sides rises to the draining level at high speed as shown by B in FIG. 5, and almost instantaneously at the same time as the quantitative detection. The draining is completed. At this time, as shown in FIG. 1, the contraction stroke and the speed of the draining actuator 17 are a fixed ratio ｛(the distance between the draining support shaft 14 and the tilting support shaft 23) / (the drainage support). The distance between the shaft 14 and the upper support pin 20 of the hot-water dropping actuator 17) is amplified by the rotation of the tilting support shaft 23 and the speed thereof.

In the case where the quick return by the hot-water dropping actuator 17 is not performed, that is, as shown by a two-dot chain line in FIG. Not stable.

Incidentally, even if the ladle 24 is sufficiently lowered and returned, the unwinding actuator 17 is returned to its original state (even if the ladle 24 is fully lowered and returned) even if the ladle 24 is sufficiently returned to return, even if the ladle 24 is sufficiently returned to return, even if the ladle 24 is sufficiently returned to return. (Pre-reduction state) and prepare for the next fixed quantity pouring.

[Effects of the Invention] According to the present invention, the tilting support shaft of the ladle is rotatably supported by the boiler frame, and the boiler frame is forcibly rotated by the boiler actuator around the boiler support shaft. Therefore, at the time of pouring, the pouring frame is rotated by the pouring actuator to instantly raise the tilting support shaft of the ladle and forcibly press the tap hole located between the tilting support shafts. The tapping from the tap can be shut off instantaneously, and a truly accurate fixed-rate pouring can be performed. In particular, the draining frame is rotatably supported behind the tilting spindle by the draining spindle, and the draining frame is supported at a position closer to the draining spindle than the tilting spindle with the draining spindle as a fulcrum. Since the forcible rotation is performed by the cutting actuator, the moving speed of the tilting spindle with the fulcrum as the fulcrum is greater than the operating speed of the hot-watering actuator. Can be returned at a high speed, and the draining can be completed in a very short time.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a pouring device of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, and FIG. FIG. 5 is a cross-sectional view, FIG. 5 is a view showing the relationship between the ladle tilting speed and time in the constant-rate pouring, and FIG. 6 is an explanatory view showing an outline of pouring. 11 ... Fixed frame, 14 ... Boiler support shaft, 15 ... Boiler frame, 17 ... Boiler actuator, 21 ... Ladle support, 23 ... Tilt support shaft, 24 ... Ladle, 26 ... Tout gate, 31 ...
... Ladle drive mechanism.

Claims (1)

(57) [Claims] 1. A pouring device in which a ladle is tilted by a ladle driving mechanism to pour water from a pouring port located in front of the ladle, wherein the ladle is disposed on both sides of the pouring port of the ladle. A tilting support shaft serving as a fulcrum when tilting, a boiler frame rotatably supporting the tilting support shaft, and a boiler support rotatably supporting the flashing frame behind the tilting support shaft A pouring device, comprising: a shaft; and a boiler actuator forcibly rotating the boiler frame at a position closer to the brace shaft than the tilting support shaft with the bake shaft as a fulcrum.