JPH0415412Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention automatically senses when the amount of molten metal has decreased and additional supply is required, and notifies the controller of the automatic molten metal supply device. The present invention relates to a metal casting device equipped with a device for.

(Prior Art) Conventionally, in a metal casting apparatus, an operator visually confirms a decrease in molten metal in a storage tank of the casting apparatus and replenishes the molten metal.

(Problem to be solved by invention) With conventional metal casting equipment,
Molten metal in a container must be transported and refilled, which is labor-intensive and dangerous. When a plurality of metal casting machines are used to cast different parts, the casting machines require different amounts of molten metal reduction, which requires more attention and effort.

In addition, slag of molten metal adheres to the metal rod that communicates to the controller that the amount of molten metal has decreased, and when the amount of molten metal decreases, the molten metal that adheres to the tip of the metal rod cools and hangs down in an icicle shape. , Even though the molten metal in the storage tank is decreasing, the tip of the metal rod and the remaining molten metal in the storage tank are connected, and information about the decrease in molten metal is not transmitted to the controller.

This invention provides a metal casting device that can reliably and automatically sense that the molten metal in the storage tank has decreased and needs to be replenished, and can notify the controller of the automatic molten metal supply means. With the goal.

(Means for solving the problem) A metal rod whose tip penetrates into the molten metal in the storage tank and whose other end is wired to the controller of the automatic molten metal supply means is supported via an insulator, and the molten metal in the storage tank is In the metal casting device, the metal is grounded and the molten metal automatic supply means is enabled to operate by notifying the controller that the molten metal in the storage tank has decreased and the tip of the metal rod has separated from the molten metal. A gas flame jet nozzle is provided to heat the metal rod and/or the vicinity of the contact between the metal rod and the molten metal in the storage tank.

(Function) The gas flame jet nozzle heats the metal rod and/or the vicinity of the contact between the metal rod and the molten metal, and prevents slag of molten metal from adhering to the tip of the metal rod or cooling of the molten metal adhering to the tip of the metal rod. It hangs down like an icicle,
To prevent the tip of a metal rod from connecting with the remaining molten metal in the storage tank and not informing a controller of an automatic molten metal supply means even though the molten metal in the storage tank is decreasing.

(Example) The embodiments shown in the drawings will be described below.

In the drawings, 1 is a casting apparatus body, 2 is a storage tank for molten metal, 3 is molten metal, and 3a is the upper surface of molten metal 3. Reference numeral 4 denotes a metal rod, which is supported by a support 5 attached to the main body 1 via an insulator or other insulator, and its tip usually extends into the molten metal 3.
When the molten metal 3 decreases to the extent that it requires replenishment, the molten metal 3 is moved away from the upper surface 3a. The other end of the metal rod 4 is connected to a controller (not shown) of an automatic molten metal feeder 11 through an electric wire 6.

7 is a gas flame injection nozzle, the tip of which is oriented so that the gas flame hits the metal rod 4 and/or the contact area between the metal rod 4 and the molten metal 3, and the other end is directed to the gas supply source. Connected.

8 is a ground wire that connects the storage tank 2 via the storage tank 2.
It is connected to the molten metal 3 inside. Reference numeral 9 denotes a feeding tool for feeding the molten metal 3 to a casting mold (not shown).

When using this device, one or more main devices are installed, and an electric wire 6 is wired between the controller of the automatic feeder 11 that runs on the rail 10 installed above the storage tank 2 and the metal rod 4. , a metal melting furnace 12 is installed below the end of the rail 10. 13 is the molten metal tank. This molten metal tank 13 is partitioned at the top by a partition plate 14 and communicated at the bottom so that floating metal slag can be separated and molten metal can be drawn from the side where no slag is floating.

By casting, the molten metal decreases and the upper surface 3a descends, but since the flame from the gas flame injection nozzle 7 heats the metal rod 4 and the molten metal it comes into contact with, the metal rod 4 is melted. Finally, the metal rod 4 is removed without the metal or its slag adhering to it and forming an icicle.
When the tip of the metal rod leaves the top surface 3a, the connection between the metal rod 4 and the ground wire 8 is cut off, so the automatic feeding device 1
1 controller is notified and the controller automatically feeds machine 11.
is moved onto the metal melting furnace 12 and stopped, the automatic feeder 11 scoops up the molten metal in a container, moves again and stops above the storage tank 2 of the casting device, and pours the molten metal from the container into the storage tank 2.

Although not shown in the drawings, it is possible to prevent icicles from forming at the tip of the metal rod 4 by attaching a vibrator that vibrates the metal rod 4 to the casting apparatus. In this case, the gas flame ejection means may be omitted.

(Effects) The metal casting device according to this invention prevents the adhesion of slag and icicles of molten metal to the metal rod,
This makes it possible to replenish the molten metal by automatically and reliably detecting the decrease in molten metal in the molten metal storage tank by notifying the controller of the automatic supply means without having to keep an eye on the decrease in molten metal in the molten metal storage tank due to casting. , no labor required, no work hazards. The above effect is particularly significant when several casting apparatuses are arranged to cast parts of different shapes. Moreover, it has a simple structure and can be manufactured at low cost.

[Brief explanation of the drawing]

What is shown in the drawings shows an embodiment of this invention; FIG. 1 is a schematic explanatory view, FIG. 2 is a perspective view of the main part,
FIG. 3 is a usage explanatory diagram. 1... Main body, 2... Storage tank, 3... Molten metal, 3
a...Top surface of molten metal, 4...Metal rod, 5...Support, 6...Electric wire, 7...Gas flame jetting nozzle, 8
...Earth wire, 9...Ordering tool, 10...Rail,
11...Automatic feeding machine, 12...Metal melting furnace, 13
...molten metal tank.

Claims (1)

[Scope of utility model registration request] A metal rod whose tip plunges into the molten metal in the storage tank and whose other end is wired to the controller of the automatic molten metal supply means is supported via an insulator, and the molten metal in the storage tank is grounded and the molten metal in the storage tank is In the metal casting device, the metal rod and/or the metal rod and/or A metal casting device characterized by being provided with a gas flame jet nozzle that heats the vicinity of contact with molten metal in a storage tank.