JPH07204830A - Method for distributing molten metal in casting equipment - Google Patents

Abstract

PURPOSE:To eliminate the wanting time for molten metal of-the next time after casting by making the timing of distribution c) of the molten metal from a molten metal distributing ladle to a stationary ladle suitably in the casting equipment. CONSTITUTION:In the casting equipment arranging the stationary ladle 12 for pouring the molten metal in each of plural casting machines, at the time of distributing the molten metal into plural stationary ladies 12 from a moving type molten metal distributing ladle 21, the wt. of each stationary ladle 12 containing the molten metal is measured with a load cell 16. It is obtd. how many times are remained as the casting quantity of the molten metal in the inner part of this stationary ladle 12. Then, the molten metal is supplied in priority from the stationary ladle 12 having smaller quantity of the molten metal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water distribution method in casting equipment.

[0002]

2. Description of the Related Art In a casting facility for small-diameter pipes, a plurality of casting machines are provided, the molten metal is put in a hot water ladle and distributed to the stationary ladle of each casting machine. The stationary ladle is supplied with the molten metal for a plurality of castings from the hot water ladle. That is, the stationary ladle normally contains molten metal for about 4 to 6 times of casting, although it depends on the type of each casting machine and the type of pipe to be cast. In each casting machine, the molten metal for each casting is supplied from the stationary ladle to the triangular ladle,
Molten metal is supplied from this triangular ladle to the casting machine every time.

[0003]

In such a conventional casting facility, hot water distribution from the hot water ladle to the stationary ladle of each casting machine is performed by an operator's operation. However, the melting time of the molten metal in the stationary ladle differs depending on the type of casting machine and the type of pipe to be cast.Therefore, the timing of hot water distribution to the stationary ladle of each casting machine depends on the operator. It depends on his experience and intuition. As a result, depending on the casting machine, waiting for hot water may occur, resulting in a problem of reduced efficiency.

Therefore, the present invention solves such a problem and makes the timing of hot water distribution from the hot water ladle to the stationary hot ladle appropriate so that no waiting for hot water occurs in the casting machine. The purpose is to

[0005]

To achieve this object, the present invention is directed to a casting facility in which a plurality of casting machines are provided with stationary ladles for pouring, respectively. When distributing hot water from the hot water ladle, weigh each stationary ladle containing the molten metal to find out how many castings of molten metal are left inside the stationary ladle. Hot water is preferentially distributed from a small number of stationary ladle.

[0006]

In this way, the tare weight is subtracted from the measured total weight of the stationary ladle, and the tare weight is divided by the casting amount for one time, so that the remaining number of castings in the stationary ladle is reduced. You can find out if it contains molten metal. For this reason, by giving a signal to that effect to the stationary ladle whose molten metal is low and notifying the operator, the stationary ladle with a small amount of molten metal is preferentially distributed.

[0007]

EXAMPLE FIG. 3 shows a plan view of a casting facility for small diameter pipes.
As shown in FIG. 3, a plurality of casting machines 11 are arranged in parallel, and a stationary ladle 12 is provided corresponding to each casting machine 11 as shown in FIGS. 1 and 3. This stationary ladle 12 is a tilting device that is swung around a rotating shaft 14 by a cylinder device 13.
It is placed on 15, and with this tilting device 15 as a whole,
It is placed on a load cell 16 for measuring its weight.

[0008] The stationary ladle 12 contains the molten metal for a plurality of castings. That is, specifically, although it depends on the type of the casting machine 11 and the type of pipe to be cast, the molten metal for the casting is usually contained about 4 to 6 times. Then, the molten metal for each casting is supplied to the triangular ladle 17 from the stationary ladle 12 tilted by the tilting device 15, and the tilting of the triangular ladle 17 causes the casting machine to pass through the chute 18 and the trough 19. The molten metal for one casting is poured into the mold of 11.

To each stationary ladle 12, the molten metal corresponding to the above-mentioned plural castings is supplied from the hot water distribution ladle 21. This hot water ladle
21 is movable toward each stationary ladle 12 while being hung by a crane or the like.

FIG. 2 shows a block diagram of the control system. A signal regarding weight is sent from the load cell 16 corresponding to each stationary ladle 12 to the control device 22. Then, this control device 22
Calculates how many more times the molten metal corresponding to the casting is contained in the stationary ladle 12. That is, (number of castings) =
{(Total weight)-(tare weight)} / (weight of one casting)
Is. Of these, the tare weight is known, and the weight of one casting is constant depending on the pipe type and the like.

When the casting frequency is sufficient, a signal is sent from the control device 22 to the tilting device 15 of the stationary ladle 12,
By tilting the stationary ladle 12, the molten metal is smoothly supplied to the casting machine 11.

When there is no margin in the number of castings, especially 2 more
When the casting can be performed only once, or once, the control device 22 sends a signal to the display unit 23 to inform the operator of the fact. Then the worker
By manually operating the control device 22 or the like, the hot water ladle driving / tilting device 24 is operated, and the hot water is preferentially distributed from the stationary ladle 12 having a small amount of molten metal. As a result, the occurrence of waiting for hot water in each casting machine 11 is prevented and efficient hot water distribution becomes possible.

When the amount of molten metal in the stationary ladle 12 is less than the amount of one casting, that is, when the amount of molten metal is 0 times, the tilting device 15 is interlocked. And
Unless the control device 22 confirms that hot water has been distributed to the stationary ladle 12 by the signal from the load cell 16, this interlock is not released and the stationary ladle 12 is prevented from tilting.

[0014]

As described above, according to the present invention, when distributing hot water from a movable hot water ladle to a plurality of stationary ladles, the weight of each stationary ladle containing molten metal is measured and Check how many more times the molten metal has been poured into the ladle, and distribute the molten metal preferentially from the stationary ladle with a small amount of molten metal, so that the remaining amount of molten metal in the stationary ladle is extremely high. It is possible to prevent the decrease of the amount, prevent the occurrence of waiting for hot water in each casting machine, and perform efficient hot water distribution.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a device configuration for carrying out a hot water distribution method according to an embodiment of the present invention.

2 is a block diagram of a control system for the device shown in FIG.

3 is an overall plan view of a casting facility equipped with the apparatus of FIG.

[Explanation of symbols]

 11 Casting machine 12 Stationary ladle 15 Tilt device 16 Load cell 21 Hot water ladle

Claims (1)

[Claims] 1. In a casting facility in which a plurality of casting machines are provided with stationary ladles for pouring, respectively, when hot water is distributed to the plurality of stationary ladles from a movable hot water ladle The feature is that the weight of the stationary ladle is measured to find out how many times the molten metal corresponding to the casting is contained in the stationary ladle, and the stationary ladle with a small amount of molten metal is preferentially distributed. Hot water distribution method in casting equipment.