JPH087356Y2 - Induction melting furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to an induction melting furnace for directly pouring molten metal into a mold.

(Prior Art) In a conventional casting line, a molten metal heated and melted in an induction melting furnace is received little by little in a paddle or a ladle, and the molten metal is intermittently poured into a mold which is intermittently fed from here by a transfer device.

Since the molten metal is once received by the paddle or ladle and then poured into the mold as described above, a decrease in the pouring temperature cannot be avoided.

For this reason, the temperature drop is expected in advance and the melting temperature is raised to cause melting.However, raising the temperature not only raises the energy cost, but too high a temperature may cause product failure due to oxidation or the like. It was

In addition, when pouring molten metal directly from the induction melting furnace into the mold, the molten metal is placed between the sprue and the mold, because the induction melting furnace and the mold being conveyed do not collide with each other because there is a gap between them. A long gutter to guide is needed.

However, since the temperature similarly drops when the molten metal passes through this long gutter, the gutter is heated by the burner. However, at this time, there is a problem that the burner combustion gas is caught in the molten metal and causes defective products.

It is also possible to make the sprue longer, but when the sprue is made longer, the tilting hinge is located at the tip side of the sprue, so the furnace body must be tilted high in order to completely discharge the molten metal. Therefore, there is a problem that the stand and the tilt cylinder become large.

(Problems to be solved by the invention) The present invention eliminates the above-mentioned drawbacks and makes it possible to bring the hot spout of the furnace body close to the mold so that direct hot water can be obtained, so that the melting temperature can be made almost equal to the pouring temperature and the energy cost can be reduced. , An induction melting furnace with improved quality of cast products.

[Structure of the Invention] (Means for Solving Problems) The present invention supports the furnace body on a stand so that the furnace body can be tilted, and a guide arm is provided on the upper part of the stand so as to project forward. The tilting hinge of the furnace body is movably attached, and a transverse cylinder is connected to the tilting hinge.

(Operation) The operation of the present invention will be described. The molten material is put into an induction melting furnace to be induction-heated, and when the molten metal is formed, it waits in this state.

When the mold is conveyed, the tilting cylinder and the traversing cylinder are driven simultaneously to extend the piston. When approaching, it is pouring directly into here.

(Embodiment) Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

1 to 3 show an embodiment of the present invention.
A furnace body 1 made of refractory material and formed in a crucible shape is supported by a stand 2. The furnace body 1 is rotatably supported by a tilting hinge 4 attached to the upper part of the stand 2 at the tip side of the furnace body 3, and both sides of the furnace body 1 are supported by tilting cylinders 5 and 5 as shown in FIG. It is connected to the base of 2 and tilts.

As shown in FIG. 3, the stand 2 is provided with two guide arms 6, 6 horizontally projecting forward as shown in FIG.

The tilting hinge 4 is slidably mounted on the guide arm 6, and the rear end of the tilting hinge 4 is connected to a traverse cylinder 7 mounted on the upper portion of the stand 2.

Reference numeral 8 denotes a mold arranged in front of the induction melting furnace, which is intermittently moved by the transfer device 9.

Next, the operation of the above apparatus will be described. As shown in FIG. 1, the molten material is charged into the furnace body 1 and induction heating is performed.

When the molten metal is produced, it stands by in this state, and when the mold 8 conveyed by the conveying device 9 stops in front of the induction melting furnace, the tilting cylinder 5 is driven to extend the piston and at the same time, the piston of the lateral moving cylinder 7 Is extended and the tilting hinge 4 is pushed out to move the guide arm 6 forward.

When the tilting cylinder 5 and the traversing cylinder 7 are driven simultaneously, the furnace body 1 tilts with the tilting hinge 4 as a fulcrum as shown in phantom in FIG. 1, and the gate 3 moves forward to approach the mold 8. From here, it is poured into the mold 8.

In this way, when pouring, the sprue 3 is guided by the guide arm 6 and moves forward to shorten the distance from the mold 9, so that the pouring can be performed directly without passing through the gutter, and the temperature does not drop. Can be cast at an appropriate pouring temperature.

[Effects of the Invention] As described above, according to the present invention, since the gate of the furnace body can be brought close to the mold and the hot water can be directly poured with the extremely simple structure, the melting temperature can be made almost equal to the pouring temperature and the energy cost can be reduced. At the same time, it is possible to obtain a furnace body in which the quality of the cast product is improved with less oxidation and gas entrainment.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a side view of an induction melting furnace, FIG. 2 is a front view of FIG.
FIG. 3 is a plan view of the induction melting furnace. DESCRIPTION OF SYMBOLS 1 ... Furnace body, 2 ... Stand 3 ... Gate, 4 ... Tilt hinge 5 ... Tilt cylinder, 6 ... Guide arm 7 ... Traverse cylinder, 8 ... Mold 9 ... Transfer device

Claims (1)

[Scope of utility model registration request] 1. A furnace body is tiltably supported on a stand, and a guide arm is provided on an upper part of the stand so as to project forward, and a tilting hinge of the furnace body is movably mounted on the guide arm. An induction melting furnace characterized in that a transverse cylinder is connected to the tilt hinge.