JPH09182954A - Casting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply absolutely required amt. of molten metal to a casting mold by pouring the molten metal in a measuring cup using a measuring means into the mold by means of a pouring mechanism. SOLUTION: A measuring cup 1 containing a molten metal measured for a prescribed quantity using a load cell 2 is held by manipulators M1 , M2 and moved to the upper part of the gate cup E of the mold A. Then, the manipulators M1 , M2 are inclined so that the molten metal in the measuring cup 1 may be poured into the sprue cup E. As a result, the molten metal in the cup 1 is moved into the gate cup E and then, by opening a stopper S, supplied into a cavity C and feeder heads C2 through a runner C1 . The measuring cup 1, finishing to transfer the molten metal in the sprue cup E, is returned to the original condition by the manipulators M1 , M2 and moved to the position of the load cell 2 again so as to start the similar measuring. Thus, the generation of defective casting products is reduced, eliminating waste of molten metal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting apparatus, and more particularly to a casting apparatus capable of pouring a predetermined amount of molten metal into a mold.

[0002]

2. Description of the Related Art Conventionally, in pouring molten metal into a mold in a casting apparatus of this type, the molten metal in a ladle is poured into a receiving port provided above the gate of the mold, or is provided above the gate. I try to pour the water into the sprue cup.

The amount of molten metal supplied into the receiving port or the sprue cup is determined so as to fill the internal space of the cavity, runner, riser or the like formed in the mold.

[0004]

However, when pouring molten metal in the above-mentioned conventional casting apparatus, it is necessary to have experience in order to fill the space such as the cavity formed in the mold with the molten metal without excess or deficiency. If the amount of molten metal to be poured does not reach the specified amount, it will result in a defective cast product.
If the amount of molten metal to be poured is larger than the predetermined amount, the disadvantage that the molten metal is wasted occurs.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to provide a casting apparatus capable of pouring molten metal into a mold without excess or deficiency.

[0006]

In order to achieve the above object, a casting apparatus according to the present invention is a casting apparatus for pouring a molten metal into a mold to obtain a casting product. The molten metal is received from a furnace such as a holding furnace. Measuring cup, measuring means for measuring the measuring cup to a predetermined amount of molten metal to be poured into the mold, and pouring the molten metal in the measuring cup measured by the measuring means into the mold It is characterized by having a hot water mechanism. Further, the measuring means is composed of a load cell. Further, the pouring mechanism is characterized by a robot. Then, the pouring of the molten metal into the mold is performed through a sprue cup.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram also showing an operating state of the casting apparatus according to the embodiment.

The mold A is composed of an upper mold a1 and a lower mold a2. The molds a1 and a2 are filled with molding sand a'and a'and the molding sands a'and a'have cavities. A core D forming C is provided.

The lower part of the lower mold a2 is placed on the surface plate B to hold the entire mold A, and the spout cup E is provided on the upper part of the upper mold a1.

The capacity of the sprue cup E is set to be slightly larger than the capacities of the cavity C, the runner C1 and the feeders C2, C2. Then, when the stopper S provided at the upper part of the runner C1 is opened, the molten metal in the spout cup E is poured into the cavity C and the feeders C2, C2 via the runner C1. Has been done.

In the figure, reference numeral 1 is a measuring cup, which is constructed by stretching a refractory material inside a steel container. The capacity of the measuring cup 1 is determined to be slightly larger than the capacity of the spout cup E. Although three measuring cups are illustrated here, this is for explaining the moving state of one measuring cup. That is, this measuring cup 1
A pair of robot manipulators (hereinafter referred to as manipulators) M1 and M2 are held and movable.

The load cell 2 is constructed so that the measuring cup 1 can be placed thereon, and the amount of molten metal in the measuring cup 1 can be measured by utilizing the change in electric resistance. The manipulators M1 and M2 are configured to separate from the measuring cup 1 during the measurement by the load cell 2 so that the measuring can be performed accurately.

The detection signal of the load cell 2 is the load cell 2
It is used to control the tilting of the holding furnace H that supplies the molten metal to the measuring cup 1 placed on the. That is,
The detection signal of the load cell 2 tilts the holding furnace H when the amount of molten metal in the measuring cup 1 approaches a predetermined amount that fills the cavity C of the mold A, the runner C1 and the feeders C2, C2 without excess or deficiency. It is configured so that the holding furnace H can be returned to the original horizontal position by operating the drive source that does not operate. Then, when the holding furnace H returns to the horizontal state and the supply of the molten metal to the measuring cup 1 is stopped, the measuring cup 1
It is determined that the amount of molten metal in the inside reaches the above-mentioned predetermined amount.

The measuring cup 1 in which a predetermined amount of molten metal is measured by using the load cell 2 is held by manipulators M1 and M2 and moved to above the gate cup E of the mold A. Next, the manipulators M1 and M2 are tilted so as to pour the molten metal in the measuring cup 1 into the spout cup E. As a result, the molten metal in the measuring cup 1 is moved into the spout cup E.

The molten metal in the sprue cup E is opened by opening the stopper S to pass through the runner C1 to the cavity C and the riser C.
2, supplied to C2.

After the molten metal has been transferred to the sprue cup E, the measuring cup 1 is returned to the original state (not tilted) by the manipulators M1 and M2, and then moved to the position of the load cell 2 again. The same measurement as is started.

As described above, the casting apparatus according to the present embodiment can accurately measure the amount of molten metal to be poured into the mold A using the load cell 2 without excess or deficiency, so that defective casting products are less likely to occur. Moreover, there is a feature that the molten metal is not wasted.

Further, since the manipulators M1 and M2 are used for moving the measuring cup, automation of the casting apparatus can be easily dealt with.

In the above example, the molten metal from the measuring cup 1 was poured into the mold A via the sprue cup E, but instead of the spout cup E, a receiving port may be provided to pour the molten metal. . However, when the sprue cup is provided as in the present embodiment, the molten metal can be easily supplied.

[0020]

The casting apparatus according to the present invention comprises a measuring cup for receiving molten metal from a furnace such as a holding furnace, and a measuring means for measuring the measuring cup to a predetermined amount to be poured into the mold. Since it comprises a pouring mechanism for pouring the molten metal in the measuring cup measured by the measuring means into the mold,
It is possible to inject the molten metal into the mold without excess or deficiency, and it is possible to prevent the defective product of the cast product from being generated and prevent the waste of the molten metal. When the load cell is used as the measuring means, the molten metal can be easily measured. Further, when the pouring mechanism is constituted by a robot, automation of the casting device can be easily dealt with. When the molten metal is poured into the mold through the sprue cup, the molten metal can be easily supplied.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a casting apparatus according to an embodiment of the present invention.

[Explanation of symbols]

1 measuring cup 2 load cell (measuring means) H holding furnace M1, M2 robot manipulator (manipulator (pouring mechanism)) A mold B surface plate a1 upper mold a2 lower mold E gate cup S stopper C cavity C1 runner C2 riser D Nakako

Claims (4)

[Claims] 1. A casting apparatus for pouring molten metal into a mold to obtain a casting product, a measuring cup for receiving the molten metal from a furnace such as a holding furnace, and a predetermined amount of molten metal to be poured into the mold into the measuring cup. A casting apparatus comprising: a measuring unit configured to measure as described above, and a pouring mechanism that pours the molten metal in the measuring cup measured by the measuring unit into the mold. 2. The casting apparatus according to claim 1, wherein the measuring means comprises a load cell. 3. The casting apparatus according to claim 1, wherein the pouring mechanism comprises a robot. 4. The casting apparatus according to claim 1, wherein the molten metal is poured into the mold through a sprue cup.