JPH038941Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention mainly relates to a melting furnace for melting return material etc. generated during casting.

Conventional melting furnaces for die-casting put die-casting ingots and return materials generated during casting into a pot and melt them, and the molten metal is scooped out with a scoop or the like and supplied to a die-casting machine, etc. Ta.

Therefore, since the ingots and returned material that have solidified in the pot are melted, it is not possible to melt the ingots and returned materials with high thermal efficiency. The drawback was that the temperature of the molten metal supplied to the machine varied.

In view of the above-mentioned drawbacks of the conventional technology, the present invention is capable of melting ingots, return materials, etc. with thermal efficiency, saving melting energy, and maintaining the temperature of the molten metal supplied to die-casting machines, etc. at an optimum temperature. It's about getting a melting furnace.

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

In the embodiment shown in Fig. 1, numeral 1 denotes a chimney-shaped melting furnace body that can house ingots, return material 2, etc. generated during casting, and this melting furnace body 1 is fixed to a device fixing part. . Reference numeral 3 denotes a molten metal guide provided at the lower part of the melting furnace main body 1 for guiding the molten metal 4 melted in the melting furnace main body 1 into a pot 6 of a melting furnace 5 that supplies the molten metal to a die-casting machine or the like. In this embodiment, 3 is constituted by an inclined plate that covers the lower surface of the melting furnace main body 1. 7
is a support plate provided at the lower part of the melting furnace main body 1 and having a large number of holes 8 formed in the inclined plate that supports the ingots, return material 2, etc. stored in the melting furnace main body 1; The support plate 7 is made of a material that does not dissolve even when heated to melt the ingot or the return material 2. A melting burner 9 is provided in a recess 10 at the bottom of the support plate 7 of the melting furnace main body 1 and heats and melts the ingots and return material 2 on the support plate 7, and the crater of the melting burner 9 is located in the support plate It is placed in a position where it will not be hit by the molten metal falling from 7.

In the melting furnace 11 having the above structure, solidified ingots and returned material 2 are introduced into the melting furnace body 1 through the upper opening 12 and supported on the support plate 7. In this state, when the melting burner 9 is ignited to cause combustion, the combustion flame rises through the inside of the melting furnace body 1. Therefore, the ingots and returned material 2 on the support plate 7 are heated and melted by the combustion flame. The melted metal falls on the inclined plate 3 through a number of holes 8 in the support plate 7, and flows into the pot 6 of the melting furnace 5.

Next, a different embodiment of the present invention shown in FIG. 2 will be explained. In the description of this embodiment, the same components as those in the embodiment of the present invention are given the same reference numerals and redundant explanations will be omitted.

The main difference between the embodiment shown in FIG. 2 and the embodiment of the present invention is that the melting furnace main body 1 is placed in a melting furnace 5 that supplies molten metal to a die-casting machine, etc., and the molten metal guide 3A is dropped from a support plate 7. The inlet 13 has the following advantages: the molten metal enters directly into the pot 6 as a space, and the inlet 13 is formed in the upper side wall of the melting furnace body 1 for injecting ingots and return material 2 into the melting furnace body 1. is equipped with an opening/closing door 14 that can be opened and closed. Further, the upper opening 5a of the melting furnace 5 is provided with an opening/closing lid 15 that prevents heat from flowing out from the molten metal. This opening/closing lid 15 has an automatic opening/closing mechanism 16 such as electric
It is configured to open and close automatically according to the movement of the diamond.

By configuring the melting furnace 11A in this manner, the ingots and returned materials can be melted with high thermal efficiency in the melting furnace 11A.

As is clear from the above explanation, the present invention has the following effects.

(1) Ingots and returned materials are stored in the chimney-shaped melting furnace body, melted by a melting burner from the bottom, and the molten metal is guided into the pot, making it possible to melt ingots and returned materials with thermal efficiency. can. Therefore, melting energy (electricity, gas, oil, etc.) can be saved.

(2) Since the ingot and return material are not melted in the pot, the temperature of the molten metal in the pot can be easily maintained at a constant temperature that is optimal for casting. Therefore, a cast product of stable quality can be obtained.

(3) Ingots and returned materials can be stored in the melting furnace main body and only the required amount can be melted by the combustion flame from the melting burner, so ingots and returned materials can be frequently put into the pot as in the conventional method. It is not necessary and can be done efficiently.

(4) Since the support plate is provided in an inclined state, molten metal flows to the lower part of the support plate and falls from this part to the lower part. Therefore, even if the combustion of the melting burner is stopped with ingots or return material stored in the melting furnace main body, the entire hole in the support plate is reliably prevented from being clogged with solidification of molten metal. be able to. Therefore, since the chimney-shaped melting furnace body is not blocked by the support plate portion during reuse, the melting burner can burn efficiently.

(5) Since the ingots and returned materials supported on the support plate are directly heated and melted with a melting burner, they can be melted efficiently, and the inside of the pot only needs to be heated to the extent that it is kept warm, so it does not need to be heated more than necessary. It can be used economically.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram illustrating an embodiment of the present invention;
FIG. 2 is a schematic explanatory diagram showing a different embodiment of the present invention. 1: Melting furnace main body, 2: Ingot and return material,
3, 3A: Molten metal guide, 4: Molten metal, 5: Melting furnace,
6: pot, 7: support plate, 8: hole, 9: melting burner, 10: recess, 11, 11A: melting furnace, 1
2: Upper opening, 13: Inlet, 14: Opening/closing door,
15: Opening/closing lid, 16: Automatic opening/closing mechanism.

Claims (1)

[Scope of utility model registration request] A chimney-shaped melting furnace body capable of storing ingots and returned materials inside, and a plurality of melting furnaces installed in an inclined manner at the lower part of the melting furnace body to support the ingots and returned materials stored in the melting furnace main body. a support plate with holes formed therein, a melting burner for directly heating and melting the ingots, return materials, etc. supported by the support plate provided at the lower part of the melting furnace main body; A melting furnace comprising a molten metal guide for guiding molten metal melted in the provided melting furnace main body to a pot or the like.