JPS6350073Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a casting device used to cast rings, pendants, and other accessories made of precious metals, as well as dentures and other items made of precious metals. It is related to.

BACKGROUND TECHNOLOGY Casting equipment conventionally used to cast products such as those described above includes a melting furnace equipped with a high-frequency heating device that holds and heats a "crucible";
It had a casting chamber in which the mold was loaded and set up for casting.

Problems to be Solved by the Invention In such casting equipment, the mold is poured with molten metal from the "crucible" of the melting furnace and then transferred from the casting chamber to another environment. After the heat is radiated using one of the methods, the cast product is taken out.

The work during this period has conventionally been basically done manually and is very dangerous.

Although the mold temperature usually varies slightly depending on the metal being cast,
It is prepared by firing it to around 100°C (so that the metal to be cast will not solidify midway and cannot be filled without reaching the details). The mold is then loaded into the casting chamber and maintained at a constant temperature for the subsequent pouring operation, while at the same time the mold into which the metal is poured remains at a high temperature due to the additional thermal energy of the molten metal. As a result, the surface temperature of the mold does not drop easily and remains at a high temperature, so handling it is a highly dangerous task.

The casting device of this invention solves this problem,
The present invention proposes a new casting device that can ensure the safety of workers and prevent industrial accidents by preventing people from touching the hot mold after casting.

Means for Solving the Problems As shown in FIG. 1, the casting apparatus of this invention has a melting furnace 1 and a casting chamber 2 into which a mold 4 is loaded, and is connected to the casting chamber 2 for cooling. Room 3
will be established. Moreover, the mold holder 5 holding the mold 4 in the casting chamber 2 can be moved from the casting chamber 2 to the cooling chamber 3 automatically and without any manual effort. In this way, after pouring the molten metal from the melting furnace 1 into the mold 4 held in the casting chamber 2, the mold 4 is immediately moved from the casting chamber 2 to the cooling chamber 3, and the mold 4 is continuously and automatically The casting 6 can be removed after it has cooled down and is completely free of danger.

Embodiment Hereinafter, the apparatus used in the present invention will be explained according to the examples shown in FIGS. 1 and 2.

In Figures 1 and 2, 1 is the melting furnace, and the "crucible" 1
Spiral high frequency heating device 1 that holds and heats 1
It has 2 built-in. This "crucible" 11 has a discharge port 13 formed in the center of the bottom, and a rod-shaped opening/closing stopper 14.
The discharge port 13 is closed. Other examples of the opening/closing stopper include a shutter that opens and closes in the horizontal direction, and can be used as appropriate. The high frequency heating device 12 is usually installed separately from the casting device, and is configured to control heating temperature and heating time.

A casting chamber 2 is installed at the lower part of the melting furnace 1, and holds a mold 4 by a shutter-shaped mold holder 5 supported at the bottom so as to be openable and closable in the horizontal direction. The mold holder 5 has an L-shaped cross section that engages the bottom of the mold 4. It is held movably up and down by at least a pair of cylinders 15 hanging from the upper end of the casting chamber 2, and is held movable horizontally by cylinders or the like. Of course, the mold holder 5 is not limited to the structure described above, but may also be a gripping type manipulator or the like.

In this invention, a cooling chamber 3 is provided connected to the casting chamber 2. This cooling chamber 3 has a water supply port 21 for supplying cooling water and a drain port 22. This drain port 22 allows sludge generated by investment material eluted from the cast mold to flow out and be discharged together with hot water heated by exchanging heat with the high temperature mold 4 generated in the cooling chamber 3.

In the figure, the cooling chamber 3 is arranged in the order of melting furnace 1, casting chamber 2, and cooling chamber 3 in the upper and lower order, and the mold 4 is automatically moved from the casting chamber 2 to the cooling chamber 3 by opening the mold holder 5. Moving.

Therefore, during casting, the preheated mold 4 held on the table-shaped mold holder 5 is held in the casting chamber 2 and transferred to the "crucible" 11 in the melting furnace 1.
The mold 4 is injected with molten metal and then moved from the casting chamber 2 to the cooling chamber 3 by operating the mold holder 5, and is cooled within the cooling chamber 3.

As a means for lowering the mold holder 5 from the casting chamber 2 to the cooling chamber 3, a table-shaped mold holder 5 is used.
This also includes providing a through hole through which the mold 4 can pass, and making this through hole openable and closable by a shutter.
This shutter works in conjunction with an opening/closing plug 14 that closes the discharge port 13 of the mold 4, and the opening/closing plug 14 opens the discharge port 13 at intervals of time such that the molten metal is sufficiently distributed within the mold 4. Just open it. In this way, the mold 4 is automatically moved to the cooling chamber 3 as soon as the shutter is opened, and the mold 4 is cooled safely and efficiently without any manual effort.

In the above example, the cooling chamber 3 is provided at the bottom of the casting chamber 2, but it is of course possible to place it on the side.In that case, rotate the mold holder until it connects to the water tank installed in the cooling chamber. Alternatively, horizontal movement by reciprocation is possible. Then, the mold 4 may be thrown into the water tank by tilting the table-like mold holder, or by opening the grip of the manipulator-type mold holder.

The cooling chamber 4 is rotatable by an arm 16, and the mold 4
After the mold 4 is put in, it is sufficient to move it horizontally and take out the mold 4. Of course, an opening/closing window 23 may be formed in the side wall, and the mold 4 may be taken out by opening the opening/closing window 23 after cooling.

Effects of the invention Since the casting device of this invention is constructed as described above, by eliminating the opportunity for workers to directly touch the cast high-temperature mold, which has traditionally been extremely dangerous,
This eliminates the mental and physical pain of workers, and at the same time allows them to continue their designated work safely and efficiently.

Compared to conventional equipment, it requires less manpower and the time interval for one cycle is shorter, resulting in a very high mass production effect.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of the casting apparatus of this invention, and FIG. 2 is a perspective view showing the main parts thereof. 1... Melting furnace, 2... Casting room, 3... Cooling room,
4... Mold, 5... Mold holder.

Claims (1)

[Scope of utility model registration request] In a casting apparatus having a melting furnace 1 and a casting chamber 2 in which a mold 4 is loaded, a cooling chamber 3 is provided connected to the casting chamber 2, and a mold holder 5 holding the mold 4 in the casting chamber 2 is provided. After injecting molten metal into the mold 4 held in the casting chamber 2 from the melting furnace 1 so as to be movable from the casting chamber 2 to the cooling chamber 3, the mold 4 is subsequently transferred into the cooling chamber 3 connected to the casting chamber 2. A casting device characterized by being able to move automatically and safely.