JPH03118959A - Apparatus and method for automatic casting - Google Patents

Abstract

PURPOSE:To obviate troubles of energy and process required for treatment of returned material and to automatize a casting apparatus by individually shaking plural shaking tables mounted with a molten metal vessel and a mold in each and arranged on a rotary table at the prescribed position and pouring the molten metal while integrally tilting the molten metal vessel and the mold. CONSTITUTION:After supplying the molten metal into the molten metal vessel 4 on the rotary table 1 joined with the mold 5 and providing a heating device 3 from a molten metal supplying device, the molten metal is held and heated to the suitable temp. to pour, and plural shaking tables 6 laying the molten metal vessel 4 and the mold 5 and arranged on the rotary table in plural numbers, are individually shaked at the prescribed position, and the molten metal in the molten metal vessel 4 is poured into cavity in the mold. Rotating velocity of the rotary table 1 is matched with solidified velocity of the molten metal, and when the prescribed shaking table 6 on the rotary table 1 comes to solidified position of the molten metal, tilting of the shaking table 6 is returned back to the original posture and a part of the molten metal in a sprue in te mold 5 is returned back into the molten metal vessel 4. When the prescribed shaking table 6 comes to the taking-out position for a casting product, the casting product is taken out from the mold on the shaking table with a taking-out device for casting product.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a turntable type automatic casting device.

(Prior art) Needless to mention the literature, the most common casting method is
This is a casting method that uses the molten metal's own weight to pour into a mold without applying pressure to the molten metal.

In this case, a method is adopted in which the mold is left standing and the molten metal is poured from a molten metal transporter into the pouring hole of the mold.

(Problems to be Solved by the Invention) In the above-mentioned gravity casting method, it is necessary to leave the mold still and move the molten metal transporter, or to send the mold sequentially to a pourer placed at a fixed location and pour the molten metal. become.

These molds require a feeder section to apply pressure to the molten metal poured into the mold until it solidifies. The part must be cut and used as return material after demolding.

Furthermore, when dispensing molten metal into a mold, it is necessary to pour the molten metal slightly excessively in anticipation of solidification shrinkage.

There is a problem of wanting to eliminate the energy and complexity of processes that are consumed in processing the return material produced as a result of such casting.

In addition, relying on the conventional gravity casting method makes it difficult to automate casting, so there is a problem that needs to be improved.

(Means for Solving the Problems) The present invention was invented to solve the above problems, and the specific invention is to install a molten metal supply device around a rotating table, The system is equipped with a plurality of rocking tables on which are placed a bathtub equipped with a heating device that maintains and heats the stored molten metal at an appropriate temperature for pouring, and a mold connected to the bathtub. This automatic pouring device is characterized by having a structure in which a bathtub and a mold are integrally tilted at a predetermined position, and the molten metal in the bathtub is poured into a mold cavity.

The related invention is to pour molten metal from a molten metal supply device installed around the rotary table into a bathtub on a rotary table that is connected to a mold and equipped with a heating device that maintains and heats the molten metal stored at an appropriate temperature for pouring. After supplying the molten metal, the molten metal is kept at an appropriate pouring temperature and heated, and the bathtub and mold are placed on it, and a plurality of rocking tables installed on a rotary table are individually swung at predetermined positions to separate the bathtubs and the mold. The molten metal in the bathtub is poured into the mold cavity by tilting integrally, and the rotating speed of the rotary table is adjusted to match the solidification speed of the molten metal. When the rocking table reaches the position shown in FIG. This is an automatic casting method characterized by taking out a casting from a mold on a predetermined rocking table using a casting take-out device installed at a predetermined position.

In this structure, when each rocking table comes to a predetermined position, the bathtub and mold are tilted together and the molten metal in the bathtub is poured into the mold cavity. The structure may be such that when the rocking table reaches a predetermined position, it is pushed up and the rocking table is tilted.

The structure for restoring the tilt of the rocking table may be such that when the rocking table reaches a predetermined position, the knock bottle is pulled down to restore the tilt of the rocking table to its original state.

When the tilt of the rocking table is restored, a portion of the molten metal in the pouring hole of the mold returns to the bathtub.

Depending on the location, the knock bottle may be installed in the opposite direction of movement.

Furthermore, when the predetermined rocking table comes to the casting take-out position, the casting is taken out from the mold on the predetermined rocking table by a casting take-out device installed at a predetermined position around the rotary table. .

The automatic pouring device receives molten metal from the crucible furnace intermittently, stores the molten metal, and maintains the molten metal at an appropriate temperature.When a predetermined rocking table reaches the pouring position, it tilts and pours into the bathtub. Pour a predetermined amount of molten metal.

The installation location of the automatic pouring device is changed depending on the amount of poured metal into the mold, the slow cooling and solidification rate of the casting, etc.

(Operations and Examples) The automatic casting device of the present invention, as shown in FIG. Above is a bathtub [equipped with a heating device [31] that maintains and heats the stored molten metal at an appropriate pouring temperature.
4], the bathtub [4] and the mold attached to the bathtub [5]
A plurality of rocking tables [6] are provided on which the mold [5] is mounted, and the rocking tables [61] are individually tilted at predetermined positions to integrally tilt the bath [41 and the mold [5]. Since the structure is such that the molten metal is poured into the mold cavity [71, when one of the individual rocking tables [61] comes to a predetermined position, the molten metal supply device [
Molten metal is supplied from the bath 21 to the bathtub [41, and when the rotary table [11] rotates and comes to a predetermined position, the rocking table 161 tilts and the molten metal flows into the mold cavity [71].

Then, while the turntable [1] is further rotating, the molten metal solidifies in the mold [51] to form a casting.

At this time, when the tilt of the rocking table [61 is restored, the mold [51
A part of the molten metal in the spout [8] returns to the bathtub [4].

Furthermore, the rotary table [11 rotates, and the predetermined rocking table [6
When 1 comes to the casting take-out position, a casting take-out device [91 installed at a predetermined position around the turntable 11]
The casting is taken out from the mold [51] on the predetermined rocking table (61).

The r8 hot water supply device 121 pours molten metal from the crucible furnace [101].

(Effects of the Invention) The automatic casting device of the present invention includes a molten metal supply device installed around a rotary table, and a heating device on the rotary table that maintains and heats the stored molten metal at an appropriate temperature for pouring. A plurality of rocking tables are provided on which a bathtub and a mold joined to the bathtub are mounted, and each of the rocking tables is tilted integrally with the bathtub and mold at a predetermined position, and the hot water in the bathtub is turned into a mold. The automatic casting method of the present invention has a structure in which the molten metal is poured into the cavity, and the automatic casting method of the present invention is mounted on a rotary table that is connected to the mold and equipped with a heating device that maintains and heats the stored molten metal at an appropriate temperature for pouring. After supplying molten metal to the bathtub from the molten metal supply device installed around the rotating table, the molten metal is kept at an appropriate pouring temperature and heated. The rotating table is individually swung at a predetermined position, the bathtub and the mold are tilted together, and the molten metal in the bathtub is poured into the mold cavity, and the rotational speed of the rotating table is matched with the solidification rate of the molten metal. When the rotary table rotates and a predetermined rocking table reaches a predetermined position where the molten metal solidifies, the tilt of the rocking table is restored and a part of the molten metal in the pouring hole of the mold is returned to the bath, and the molten metal is returned to the specified position. This is a casting method in which when the oscillating table comes to the casting retrieval station, the casting is removed from the mold on the predetermined oscillating table using a casting retrieval device installed at a predetermined position around the rotating table. It has the advantage that the volume of the feeder section that does not become a product can be reduced, and that there is less material returned after demolding.

Another advantage is that the amount of molten metal poured into the mold can be kept constant when dispensing the molten metal into the mold. As a result, there is an advantage that the energy and process complexity required for processing the returned material can be eliminated.

Furthermore, the present invention has the great advantage of being able to achieve automation, and thus makes a significant contribution to the development of industry.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overhead conceptual diagram of an embodiment of the present invention, and FIG. 2 is a conceptual diagram illustrating a state in which a rocking table is sequentially tilted in an embodiment of the present invention. 106 turntable, 2. ,, Hot water supply device: 330. heating device, 4. ,, Yubune; 591. Mold, 6. ,, rocking table; 736. mold cavity, 8. ,, pouring spout; 901.
Casting removal device, io, crucible furnace.

Claims (1)

[Claims] (1) A molten metal supply device is installed around the rotary table, and on top of the rotary table is a bathtub equipped with a heating device that maintains and heats the stored molten metal at an appropriate temperature for pouring, and a bathtub connected to the bathtub. A plurality of rocking tables on which molds are placed are provided, and the rocking tables are individually tilted at predetermined positions to integrally tilt the bathtub and mold to pour the molten metal in the bathtubs into the mold cavity. An automatic pouring device featuring: (2) Molten metal was supplied from a molten metal supply device installed around the rotary table to a bathtub connected to the mold and on a rotary table equipped with a heating device to maintain and heat the molten metal stored at an appropriate temperature for pouring. After that, the molten metal is poured and heated and maintained at an appropriate temperature, and the bathtub and mold are placed on it, and multiple rocking tables installed on the rotary table are individually swung at predetermined positions to unite the bathtub and the mold. The molten metal in the bathtub is poured into the mold cavity by tilting it to
When the rotary table rotates and a predetermined rocking table reaches a predetermined position where the molten metal solidifies, the tilt of the rocking table is restored and a part of the molten metal in the pouring hole of the mold is returned to the bath, and the molten metal is returned to the specified position. Automatic casting characterized in that when the rocking table of the rotary table comes to the casting take-out position, a casting take-out device installed at a predetermined position around the rotary table takes out the casting from the mold on the predetermined rocking table. Law.