JP2732163B2 - Pouring equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a molten metal in a mold for forming a cast iron product.
In particular, the present invention relates to a pouring device suitable for forming a large-sized cast iron product among many types.

[0002]

2. Description of the Related Art Generally, when a molten metal is poured into a mold to form a cast iron product, the molten metal in a melting furnace is poured into a ladle and then poured from the ladle into the mold.

[0003] In this case, a large ladle is used to make a large amount of molten metal so that a large ladle can be used with one ladle to handle a large number of types of large cast iron products. After pouring into the mold, the molten metal remaining in the ladle (remaining molten metal) is returned to the melting furnace. When performing a series of operations such as collecting, pouring, and returning, the worker must use a crane, forklift, etc. The ladle was moved each time.

[0004]

For this reason, several people are required for hot water supply, pouring and returning work. In addition, since it takes a long time to transport the ladle, the temperature of the molten metal decreases before pouring, so it is necessary to set the temperature of the molten metal to a high temperature in advance, and high production costs such as fading occur. Had become. Furthermore, since the ladle was transported by a crane, forklift, etc., it was difficult to maintain the ladle in a normal position, and there was a risk of high-temperature molten metal spilling from the ladle and causing burns. There was a problem. In addition, fumes (gas) generated from the molten metal in the ladle conveying process are diffused in all directions, making it difficult to collect dust.

The present invention has been made in view of the above circumstances, and has as its object to produce a wide variety of cast iron products quickly, safely and economically with a small number of personnel, and to reduce environmental pollution. It is another object of the present invention to provide a pouring device that can easily prevent the pouring.

[0006]

In order to achieve the above object, a pouring device according to the present invention is disposed between a melting furnace and a mold, and a ladle for containing the molten metal, and a ladle for raising and lowering the ladle. A lifting drive means for driving, a tilt drive means for tilting the ladle, and a rotary drive means for rotating the ladle in a horizontal plane are integrally formed, from the melting furnace to the ladle; The operation of raising and lowering the ladle when performing a series of operations such as collecting molten metal, pouring the molten metal from the ladle into the mold, and returning the remaining molten metal left in the ladle to the melting furnace, The head movement and the rotation operation are configured to be executed by the lifting drive unit, the tilt drive unit, and the rotation drive unit.

[0007]

[Action] The order of the ladle elevating operation, tilting operation, and rotating operation necessary for performing the above series of operations of hot water collection, pouring, and returning is determined by the height of the melting furnace and the mold and the initial stage of the ladle. It depends on the height position of the ladle and the initial position of the ladle spout, but basically it is performed as follows.

When taking molten metal from a melting furnace to a ladle,
The height of the ladle is made slightly lower than the height of the melting furnace by the raising and lowering drive means.

When pouring the molten metal from the ladle into the mold, the pouring port of the ladle is brought close to the pouring port of the mold by the tilting drive means.

Finally, when returning the remaining hot water in the ladle to the melting furnace, the attitude of the ladle is returned to a normal state by the tilt drive means, and the height position of the ladle is changed by the elevating drive means. Is slightly higher than the height position of the ladle, and the pouring port of the ladle is made to be directly above the melting furnace by the rotation driving means, and the pouring port of the ladle is brought close to the melting furnace by the tilting driving means. Can be

That is, the ladle raising / lowering operation, the tilting operation, and the rotating operation necessary for performing a series of operations of hot water supply, pouring, and returning are all performed by the tilting driving means, the raising / lowering driving means, and the rotating driving means. Is executed by

Therefore, a wide variety of cast iron products can be produced quickly, safely and economically with a small number of personnel, and environmental pollution can be easily prevented.

[0013]

Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the pouring apparatus 100 includes:
It is arranged between the melting furnace 200 and the mold 300.

The pouring apparatus 100 has a ladle 110, a ladle driving unit 120 and an operation panel 150, and feeds the molten metal into the melting furnace 2.
From the 00 to the ladle 110, the ladle 1
A series of operations such as pouring the molten metal from 10 into the mold 300 and returning the molten metal (remaining molten metal) remaining in the ladle 110 to the melting furnace 200 are performed by the ladle driving unit 120 by operating various switches on the operation panel 150. This is performed by raising, lowering, tilting, and rotating the pan 110. P1 is a hydraulic pump for lifting and lowering, and P2 is a hydraulic pump for tilting.

The melting furnace 200 is for melting a metal at a high temperature to produce a molten metal. The molten metal is tilted toward the ladle 110 by a tilting mechanism (not shown) to transfer the molten metal from the tap hole 200a to the ladle 110. It is configured as follows.

The mold 300 is mounted on a carriage 301 that runs on the rail L. When pouring the mold 300, the mold 300 can be easily moved to a position facing the ladle 110. ing.

FIGS. 2 and 3 are a front view and a plan view, respectively, of the pouring apparatus 100. The ladle 110 is shaped like an elongated box. Further, in order to make it difficult for the molten metal to leak from the pouring port 110a, the pouring port 110a is in a state of being warped upward, and the width opposite to the pouring port 110a is wide and deep. The pouring port 110a is provided with a stopper 110b, and the stopper 110b is
The pouring port 110a is opened and closed by being moved up and down by a lever 110c. Although not shown, the ladle 110 and the melting furnace 20 are not shown.
On the upper surface of each of the zeros, a dust collecting part for collecting fumes is provided.

The ladle 110 is configured to be raised, lowered, tilted, and rotated by a ladle driving unit 120 including a turning table 121, a lifting table 122, a main body frame 123, and the like. That is, the turning table 121 is made up of the ladle 110 and the
By supplying high-pressure oil from the tilting pump P2 (see FIG. 1) and moving the piston 125a in the tilting hydraulic cylinder 125 up and down, the ladle 110 is centered on the support 124. Rotate and tilt in a vertical plane. The turning gear 1 is located below the turning table 121.
26 are attached. In the elevating table 122,
A motor M is attached to a part of which is cut out, and the rotation of the motor M is transmitted to a turning gear 126 via a gear Ma, whereby the turning table 121 and the ladle 110 are turned in a horizontal plane. You. An elevating hydraulic cylinder 127 is attached to the center of the floor plate 123a of the main body frame 123, and a piston 127a in the elevating hydraulic cylinder 127 is connected to the elevating table 122, and the elevating hydraulic cylinder 127 is connected to the elevating hydraulic cylinder 127 by the elevating pump P1. When the high-pressure oil is supplied and the piston 127a moves up and down, the piston 127a moves up and down,
1, and the ladle 110 is raised and lowered.

Four columns 123b of the body frame 123
Is provided with a U-shaped guide rail 128,
Eight guide rollers 1 provided on the lifting table 122
29 is guided by the guide rail 128, and the elevating table 122 is vertically moved up and down. Further, a pinion 130 is provided on the lifting table 122, and 4
A rack 131 is provided on the supporting column 123b, and the operation of the pinion 130 and the rack 131 causes the lifting table 122, the swivel table 121, and the ladle 110.
Is raised and lowered while maintaining a horizontal state. The portion of the main body frame 123 below the floor plate 123a is arranged in a hole dug in the ground, so that the position of the lever 110c of the ladle 110 at the time of pouring is lowered. Opening and closing operations can be performed easily.

The operation panel 150 is provided with a support 1 for easy operation.
50a, it is installed at a height about the height of the shoulder of the operator. As shown in FIG. 4, the operation panel 150 includes a pump start switch SW1, a pump stop switch SW2, a power pilot lamp PL1, an emergency stop switch SW3, a hot water (water collecting) positioning switch SW4, a lifter operation changeover switch SW5, Lifter up / down selection switch SW6, tilt up switch SW7, tilt down switch SW8, turning direction selection switch SW9, lifter upper pilot lamp PL2, tilt lower pilot lamp P
L3, a hot water (hot water) position pilot lamp PL4 is arranged.

The pump activation switch SW1 is a push button type switch, and activates the lifting hydraulic pump P1 and the tilt hydraulic pump P2. A green pilot lamp is provided inside the push button of the pump start switch SW1, and is turned on when the pump start switch SW1 is turned on. The pump stop switch SW2 is a push button type switch, and the lifting hydraulic pump P
1, and the tilting hydraulic pump P2 is stopped. A red pilot lamp is provided inside the push button of the pump stop switch SW2.
Lights up when W2 is on. Power pilot lamp P
L1 is lit white while the power is on.
The emergency stop switch SW3 is a push button type switch, and is provided for turning off the power to ensure safety when an emergency occurs. A red pilot lamp is provided inside the emergency stop switch SW3, and is turned on when the emergency stop switch SW3 is turned on. Hot water (hot water) positioning switch SW4 is a ladle 1
This switch is used to position the ladle 10 at the tapping (dispensing) position. When the tapping switch (SW4) is turned on, the ladle 110 is located at any position.
Is positioned at a predetermined position opposite to. The lifter operation changeover switch SW5 is a switch that switches whether the lift table 122 is moved up and down by a lifter lift selection switch SW6 on the operation panel 150 or is moved up and down by a remotely located lift select switch (not shown). When the switch is set to the “hand” side, the operation panel 15
The lifter can be moved up and down by the lifter up / down selection switch SW6 above 0, and can be moved up / down by a remote lifter up / down selection switch when the switch is set to the “far” side.

The lifter lifting / lowering selection switch SW6 is a switch for lifting / lowering the lifting / lowering table 122 as described above. When the lever is tilted to the “up” side, high pressure is applied to the oil in the lifting / lowering hydraulic cylinder 127, and the piston 127a Is raised to raise the elevating table 122, and when the lever is tilted to the "down" side, the pressure on the oil in the elevating hydraulic cylinder 127 is reduced, and the piston 127a is pushed down to lower the elevating table 122.

The tilt-up switch SW7 and the tilt-down switch SW8 are push-button switches. When the tilt-up switch SW7 is turned on, the pressure on the oil in the hydraulic cylinder 125 for tilt is increased. Then, the piston 125a is pushed up and the pouring port 110a of the ladle 110 is
Is lowered and the tilt-down switch SW8 is turned on, the pressure on the oil in the lifting cylinder 125 is reduced,
The piston 125a is pushed down, and the pouring port 110a of the ladle 110 rises.

The turning direction selection switch SW9 is a switch for turning the turning table 121. When the lever is tilted to the right side, the motor M rotates forward and the turning table 121 turns clockwise, and the lever is turned. When tilted to the “left” side, the motor M rotates in the reverse direction, and the turning table 121 turns counterclockwise.

The lifter upper limit pilot lamp PL2, the tilt lower limit pilot lamp PL3, and the tapping position pilot lamp PL4 are all green pilot lamps. Lighted, the lower-limit pilot lamp PL3 is lit when the ladle 110 is tilted to the lower limit, and the tapping position pilot lamp PL4 is lit when the ladle 110 is positioned at a predetermined position.

Next, the pouring operation will be described with reference to FIG. 5 and FIG.

First, the power supply is turned on, the pump starting switch SW1 is turned on, and the elevating hydraulic pump P1 and the tilting hydraulic pump P2 are started, and then the hot water positioning switch SW4 is turned on. Then, as shown in FIG. 5A, ladle 110 is positioned at a predetermined position slightly below tap hole 200 a of melting furnace 200. In other words, the position at which hot water (hot water) is discharged from melting furnace 200 to ladle 110 can be fixedly determined, so hot water positioning switch SW
By simply turning on 4, the ladle 110 is positioned at the fixed position, thereby reducing the burden on the operator. Next, a tilt angle increasing switch (not shown) is turned on to tilt the melting furnace 200 toward the ladle 110, and the molten metal in the melting furnace 200 is discharged from the tap hole 200a to the ladle 1.
Hot water (sampling) at 10. In this case, a molten metal slightly larger than the weight of the cast iron formed by the mold 300 is taken.

When the hot water collection is completed in this way, the tilt angle reduction switch (not shown) is turned on to erect the melting furnace 200, and if the height of the gate 300a of the mold 300 is too high or too low. If so, operate the lifter elevating selector switch SW4 to set the pouring port 1 of the ladle 110.
The ladle 110 is raised and lowered so that 10a is slightly above the gate 300a of the mold 300. Then, the tilt-up switch SW7 until the tilt timer (not shown) times out.
Keep on. In this case, when the tilting timer expires and the head is tilted to the upper limit position, the pouring port 110a of the ladle 110 is vertical, and the molten metal flows out smoothly from the pouring port 110a. That is,
The tilt up switch S until the tilt timer times out
Just keep turning W7 on, the pouring port 110 of the ladle 110
a can be vertical, and the pouring port 110 of the ladle 110
It is not necessary to judge whether or not it is vertical by directly looking at a, and this also reduces the burden on the operator.

Next, the pouring port 110a of the ladle 110 is opened by operating the lever 110c to raise the stopper 110b, and the molten metal is poured from the pouring port 300a of the mold 300 (see FIG. 5B). Then, when the poured molten metal is filled in the mold 300, the pouring port 110a of the ladle 110 is closed by operating the lever 110c, and the tilt-down switch SW8 is turned on to return to the state of FIG.

Next, the lifter upper limit pilot lamp PL
The ladle 110 is raised by operating the lifter lifting / lowering selection switch SW6 until the light 2 is turned on, and the turning direction selection switch S
By manipulating W9 to rotate (turn) the ladle 110 by 180 degrees, the pouring port 110a of the ladle 110
00 (see FIG. 6A). Also in this case, since the lifter upper limit pilot lamp PL2 can recognize an appropriate height position at the time of turning, the burden on the operator is reduced.

Next, the tilt-up switch SW7 is turned on,
By operating the lever 110c, the remaining hot water left in the ladle 110 is returned to the melting furnace 200 (see FIG. 6B).

As described above, the raising / lowering operation, the tilting operation, and the
Just by operating the switch on the operation panel 150 for the turning operation, in other words, it can be controlled at a fixed position, so that the above series of operations can be performed by only one operator in a short time,
Manufacturing costs can be reduced. Further, since it is not necessary to transport the ladle 110 by a forklift or the like, safety is also ensured. Further, the ladle 110 is moved up and down within a predetermined range,
Since it is only tilted and rotated, it is not moved in a wide range, so that fumes generated from the molten metal are prevented from being spread in a wide range, and dust collection of the fumes is facilitated. Further, it is possible to easily cope with a change in the height of the gate 300a of the mold 300 due to various types.

The present invention is not limited to the above-described embodiment. For example, the stopper 110b of the pouring port 110a of the ladle 110 can be driven by a motor or the like. In this case, a sensor for detecting that the mold 300 has been filled with the molten metal is provided, and the motor is rotated in conjunction with a detection signal from the sensor, and the stopper 110 b
Is pressed down to stop pouring. The tilting hydraulic cylinder 125, the lifting hydraulic cylinder 127, and the motor M are controlled by a microcomputer or the like without instructing the raising, lowering, tilting, and rotating operations of the ladle 110 by various switches on the operation panel 150. Drive control may be performed to control the raising / lowering, tilting, and turning operations of the ladle 110. In this case, in order to cope with high-mix low-volume production, each operation of up / down, tilt, and rotation is started /
A sensor for detecting the stop position may be provided, and the microcomputer may start / stop each operation of ascending, descending, tilting, and rotating based on this sensor. However, in order to cope with high-mix low-volume production, It is better to input or select start / stop timing information for each of the raising / lowering, tilting and rotating operations according to the type of the mold (cast iron product), and to control the drive based on the stop timing information.

[0035]

As described above, according to the pouring apparatus of the present invention, a series of pouring operations necessary for forming a wide variety of cast iron products can be controlled at a fixed position. Products can be produced quickly, safely and economically with a small number of personnel, and productivity can be greatly improved. In addition, since all of the series of pouring operations are performed in the predetermined area, fumes can be easily prevented from spreading in all directions,
It is also useful in preventing environmental pollution.

[Brief description of the drawings]

FIG. 1 is a view showing an arrangement position of a pouring device according to one embodiment of the present invention.

FIG. 2 is a front view of a pouring device according to one embodiment of the present invention.

FIG. 3 is a plan view of a pouring device according to one embodiment of the present invention.

FIG. 4 is a view showing various switches on an operation panel of the pouring apparatus according to one embodiment of the present invention.

5A and 5B are views for explaining a pouring operation of the pouring device according to one embodiment of the present invention, wherein FIG. 5A shows a state of a ladle at the time of hot water collection, and FIG. It is a figure showing the state where it was made to tip.

6A and 6B are diagrams for explaining a pouring operation of the pouring device according to one embodiment of the present invention, wherein FIG. 6A is a state in which a ladle is turned when returning the remaining hot water, and FIG. FIG. 8 is a view showing a state in which the ladle is turned and then tilted when returning.

[Explanation of symbols]

 110 Ladle 200 Melting Furnace 300 Mold 120 Ladle Drive 121 Swivel Table 122 Elevating Table 125 Tilt Hydraulic Cylinder 126 Swivel Gear 127 Elevating Hydraulic Cylinder 150 Operation Panel P1 Elevating Hydraulic Pump P2 Tilting Hydraulic Pump M Motor SW4 Hot water positioning switch SW6 Lifter up / down selection switch SW7 Tilting up switch SW8 Tilting down switch SW9 Turning direction selection switch

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location F27D 3/14 F27D 3/14 Z

Claims (1)

(57) [Claims] 1. A pouring device disposed between a melting furnace and a mold, comprising: a ladle for accommodating a molten metal; elevating drive means for driving the ladle up and down; Tilting drive means for rotating the ladle in a horizontal plane and a rotary drive means for rotatably driving the ladle in a horizontal plane, taking molten metal from the melting furnace to the ladle, and melting the molten metal from the ladle to the mold. Pouring the ladle, returning the ladle remaining in the ladle to the melting furnace, performing a series of operations such as raising and lowering operation, tilting operation, rotating operation of the ladle, the raising and lowering drive means, the tilting A pouring device characterized by being configured to be executed by a head driving unit and the rotation driving unit.