JP3492194B2 - Metal melt water heater - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a melting and holding furnace for melting a metal,
The present invention relates to a hot water supply device for supplying a molten metal such as an aluminum alloy to a casting machine through a molten metal pipe by a molten metal supply device.

[0002]

2. Description of the Related Art Conventionally, there have been electromagnetic hot water supply devices, float hot water supply devices and the like as hot water supply devices for directly supplying molten metal from a melting and holding furnace to a casting machine. As shown in FIG. 5, these hot water supply devices 9 supply the molten metal 6 from the melting and holding furnace 5 to the casting machine 3, so that the molten metal pipe 4 made of metal, ceramics or the like is used.
Thus, the melting and holding furnace 5 and the casting machine 3 are connected.

One end of the molten metal pipe 4 is connected to the casting machine 3,
The other end is connected to the melt supply device 92. And
The molten metal supply device 92 is fixed to the melting and holding furnace 5. When the melt supply device 92 is composed of an electromagnetic pump, it is arranged on the outer periphery of the melt pipe 4 as indicated by reference numeral 921.

By the way, during casting, the casting machine 3 vibrates, and this vibration is transmitted to the molten metal pipe 4 and the molten metal supply device 92. On the other hand, since these are fixed to the melting and holding furnace 5 as described above, the vibration causes a load on the molten metal pipe 4 and the molten metal supply device 92. As a result, the molten metal pipe 4 and the molten metal supply device 92 are cracked and the connection portions 41, 42, 43 are displaced, and the molten metal 6 leaks.

In order to solve the above problem, Japanese Patent Laid-Open No. 8-2
Japanese Patent No. 81411 discloses the following hot water supply device for molten metal. That is, as shown in FIG. 6, in the water heater 8, the melting and holding furnace 85 and the casting machine 3 are connected by a connecting member 86 having a length adjusting mechanism.
The connecting member 86 includes a connecting rod 861 and a connecting rod receiver 862.

On the lower surface of the melting and holding furnace 85, a roller 88 that moves on a rail 87 is arranged.
As a result, the entire melting and holding furnace 85 can be moved horizontally by the roller 88. Therefore, thermal expansion of the molten metal pipe 4 and slight vibration of the casting machine 3 do not exert a load on the molten metal pipe 4. In FIG. 6, reference numeral 8
Reference numeral 2 is a molten metal supply device.

[0007]

However, the conventional hot water supply device 8 has the following problems. That is, since the hot water supply device 8 needs to move the entire melting and holding furnace 85, a large-scale movable device is required.

Further, the hot water supply device 8 is a measure against the thermal expansion load of the molten metal pipe 4, and almost no consideration is given to a measure against vibration. That is, specifically, even if the molten metal pipe 6 fixed between the melting and holding furnace 85 and the casting machine 3 is freely changed by the heat of the molten metal 6, This makes the structure less burdensome.

Therefore, the melting and holding furnace 85 moves in only one direction, which is the connecting direction to the casting machine 3. Therefore, the above structure can cope with the vibration of the casting machine 3 only in the connecting direction, and cannot absorb the vibration in the vertical direction and the lateral direction. Further, even if the vibration is in the connecting direction, the small vibrations of the casting machine 3 cannot be sufficiently absorbed by the above structure.

The present invention has been made in view of the above conventional problems, and eliminates the load of vibration of the casting machine on the molten metal pipe, the molten metal supply device, and the melting and holding furnace, and damages of these, displacement of the connecting portion, etc. Therefore, it is an object of the present invention to provide a molten metal supply apparatus that does not cause leakage of molten metal.

[0011]

According to a first aspect of the present invention, a casting machine for casting metal, a molten metal feeder for feeding molten metal to the casting machine, and a molten metal connected between the casting machine and the molten metal feeder. in the water heater and a pipe, the melt feed device, by being suspended from above, Ri swingably arranged to tear at the molten metal melting and holding furnace, the casting machine
The molten metal pipe and the molten metal supply device
Can freely vibrate together with the above casting machine.
A hot water supply device for molten metal is characterized in that it is configured so that it can be heated.

The most remarkable point in the present invention is that the molten metal supply device is swingably arranged in the molten metal in the melting and holding furnace. That is, the molten metal supply device and the molten metal pipe fixed to the molten metal supply device are in a free state with respect to the melting and holding furnace.

Next, the function and effect of the present invention will be described.
During metal casting, the vibration of the casting machine is transmitted to the molten metal pipe and the molten metal supply device. However, the molten metal supply apparatus according to the present invention is swingably arranged in the molten metal and is free from the melting and holding furnace.

That is, although the casting machine, the molten metal pipe, and the molten metal supply device are fixed to each other, the casting machine is fixed to the ground or the like, and the three parties are fixed to any other person. It has not been.

Therefore, even if the casting machine vibrates, the
Since the person integrally vibrates freely, no load is applied to the molten metal pipe and the molten metal supply device. Therefore, leakage of the molten metal does not occur due to damage to the molten metal pipe and the molten metal supply device, displacement of the connecting portion, or the like. Moreover, since the vibration of the casting machine is not transmitted to the melting and holding furnace,
This vibration does not cause problems such as cracks in the melting and holding furnace.

Therefore, according to the present invention, the load of vibration of the casting machine on the molten metal pipe, the molten metal supply device, and the melting and holding furnace is eliminated, and leakage of the molten metal occurs due to damage to these, displacement of the connecting portion, and the like. A molten metal hot water supply device is obtained.

Next, as in the invention of claim 2 , casting metal
Casting machine to make and molten metal supply to supply the molten metal to the casting machine
The feeder is connected between the casting machine and the molten metal feeder.
In hot water supply device and a molten metal pipes were, the molten metal subjected
The apparatus for supplying molten metal is characterized in that the feeder is arranged so as to be swingable in all directions within the molten metal in the melting and holding furnace.
There is a place . In this case, even if the casting machine vibrates, the molten metal pipe and the molten metal supply device, together with the casting machine, freely vibrate in all directions. Therefore, no load is applied to the molten metal pipe, the molten metal supply device, and the melting and holding furnace.

Next, as in the third aspect of the present invention, the molten metal supply apparatus is provided with a wheel and a suspending tool which are movably provided on a rail provided above the melting and holding furnace. It is preferably suspended through.

In this case, the molten metal supply apparatus can be easily supported while maintaining the free state of the melting and holding furnace. Further, since the height of the molten metal supply device can be easily adjusted by the suspending tool, the load of gravity on the molten metal pipe can be further suppressed.

Next, as in the invention of claim 4, the molten metal pipe is divided into a plurality of pieces, and each molten metal pipe, and the molten metal pipe and the molten metal supply device are mutually connected by a spherical flange having a spherical connecting surface. It is preferably connected. In this case, the molten metal pipes can be connected more reliably and the leakage of the molten metal can be prevented more reliably.

That is, since the above-mentioned molten metal pipe has a spherical connecting surface, the two molten metal pipes are not strictly arranged in a straight line, and even if they have a slight mounting angle, they are arranged in a straight line. As in the case of the contact, the connecting surfaces of both contact. Therefore, even if there is a slight angle deviation in the connection portion of each molten metal pipe, a gap is unlikely to occur and the occurrence of molten metal leakage is suppressed. Further, also in the connection portion between the molten metal pipe and the molten metal supply device, even if the molten metal pipe is not connected to the molten metal supply device at a strictly accurate angle, or if there is some deviation, the same is true. In addition, leakage of molten metal is suppressed.

Next, as in the invention of claim 5, between the tip of the molten metal pipe and the connection opening of the die casting machine sleeve of the casting machine, or between the molten metal pipes, or between the molten metal pipe and the above-mentioned molten metal. It is preferable that the molten metal supply device is connected to the molten metal supply device by a connecting jig that sandwiches the two via a packing.

In this case, the molten metal pipe and the casting machine, or each molten metal pipe, or the molten metal pipe and the molten metal supply device can be connected more reliably, and the molten metal can be connected from both connection portions. Leakage can be surely prevented. That is, since the vibration of the casting machine is absorbed by the packing, the displacement at each connecting portion is unlikely to occur.

Further, between the molten metal pipe and the casting machine, since the die casting machine sleeve and the tip of the molten metal pipe are fixed by a jig sandwiching from above and below, the connection strength is strong and vibration It does not easily slip. The molten metal includes aluminum alloy, magnesium alloy, zinc alloy, copper alloy and the like.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 FIG. 1 shows a hot water supply apparatus according to Embodiment 1 of the present invention.
This will be described with reference to FIG. As shown in FIG. 1, the hot water supply apparatus 1 of the present embodiment includes a casting machine 3 for casting metal, a molten metal supply apparatus 2 for supplying a molten metal 6 to the casting machine 3, the casting machine 3 and the molten metal supply apparatus 2. And a molten metal pipe 4 connected between the two. The molten metal supply device 2 is swingably arranged in the molten metal 6 in the melting and holding furnace 5.

Further, the molten metal supply apparatus 2 is provided with a rail 7 provided above the melting and holding furnace 5 via wheels 71 and a chain type suspending tool 72 movably provided on the rail 7. It has been suspended. The wheel 71 is provided so as to be movable left and right by a cylinder 79 via a rod 791. The suspending tool 72 is fixed to the ceiling plate 27 of the molten metal supply device 2. As a result, the molten metal supply device 2 can swing in the molten metal 6 in all directions. Also, two molten metal pipes 4 are used. Then, each molten metal pipe 4 is
It is connected by flanges 44 and 45 (see FIG. 3).

Further, the molten metal supply device 2 and the molten metal pipe 4 are also connected to each other at the connecting portion 41 by similar flanges 44 and 45 (see FIG. 3). Further, the molten metal pipe 4 and the casting machine 3 are
They are connected by a connecting jig 430 (see FIG. 4). The structures of the above-mentioned connecting portions will be described in the second and third embodiments.

As shown in FIG. 1 or 2, the molten metal supply device 2 includes a filter 25 for filtering solid matter in the molten metal 6 and a suction valve 220 for opening and closing the suction port 22.
And a discharge side valve 230 that opens and closes the discharge port 23. Also, the discharge pipe 235 connected to the discharge port 23.
Are connected to the flange 45 via the flange 44.

Next, the operation of the water heater 1 will be described with reference to FIG.
Will be explained. First, as shown in FIG. 2 (A), the inside of the molten metal supply device 2 is set to a negative pressure by a vacuum pump (not shown) attached to the molten metal supply device 2 via a suction / air supply pipe 21. Next, by opening the suction side valve 220 at the suction port 22 for the molten metal 6, the molten metal 6 passes through the filter 25 and is sucked into the molten metal supply device 2. When a predetermined amount of the molten metal 6 is supplied, the suction is finished and the suction port 22 is closed by the suction side valve 220.

Then, the discharge side valve 230 of the discharge port 23 for the molten metal 6 is opened, and an inert gas is fed into the molten metal supply device 2 from the suction / air supply pipe 21 to pressurize. As a result, the metal melt 6 in the melt supply device 2 is sent from the melt pipe 4 to the die casting machine sleeve 31 of the casting machine 3 by the pressure of the gas (FIG. 2 (B)).

Incidentally, the die casting machine sleeve 31
The supply amount of the molten metal 6 to the metal is adjusted by the change amount of the height of the molten metal. That is, the float 26 with a shaft is floated on the molten metal 6, and the height of the shaft is adjusted by detecting the phototube sensor. Next, the die casting machine sleeve 3
The molten metal 6 sent to the No. 1 is cut off by the advance of the plunger 311 (FIG. 2 (C)), and after vacuum deaeration, it is injected by advancing the plunger 311. Also,
It is also possible to inject without vacuum deaeration (FIG. 2D).

Next, the function and effect of this example will be described. In the molten metal supply apparatus of this example, the vibration of the casting machine 3 is transmitted to the molten metal pipe 4 and the molten metal supply apparatus 2 during casting of metal. However, the molten metal supply device 2 according to the present embodiment is swingable in the molten metal 6 in the melting and holding furnace 5, that is, in a free state with respect to the melting and holding furnace 5.

That is, the casting machine 3, the molten metal pipe 4,
Although the molten metal supply device 2 is fixed to each other, the three members are not fixed to any other person except that the casting machine 3 is fixed to the ground or the like.

Therefore, even if the casting machine 3 vibrates, the three members are united and vibrate freely, so that no load is applied to the molten metal pipe 4 and the molten metal supply device 2. Therefore, leakage of the molten metal 6 does not occur due to damage to the molten metal pipe 4 and the molten metal supply device 2, displacement of the connecting portions 41, 42, 43, and the like. Further, since the vibration of the casting machine 3 is not transmitted to the melting and holding furnace 5, the vibration does not cause a problem such as the generation of cracks in the melting and holding furnace 5.

Further, the molten metal supply apparatus 2 is suspended from a rail 7 provided above the melting and holding furnace 5 via wheels 71 and a suspending tool 72 movably provided on the rail 7. Has been.

Therefore, the molten metal supply device 2 can be easily supported while maintaining the free state of the melting and holding furnace 5. Further, since the height of the molten metal supply device 2 can be easily adjusted by the suspending tool 72, the load of gravity on the molten metal pipe 4 can be further suppressed.

Therefore, according to this embodiment, the load of vibration of the casting machine on the molten metal pipe, the molten metal supply device, and the melting and holding furnace is eliminated, and the molten metal does not leak due to breakage, displacement of the connecting portion, etc. A hot water supply device for molten metal is obtained.

Embodiment 2 As shown in FIG. 3, this embodiment shows a connection structure in the connection portions 41 and 42 of the molten metal pipe 4 in the water heater 1. That is, the flanges 44 and 45 of the connecting portions 41 and 42 are respectively the spherical connecting surfaces 441 and 451.
Is a spherical flange having. The spherical connection surface 441 is a convex spherical surface. On the other hand, the spherical connecting surface 451 is a concave spherical surface, and the packing 452 is attached thereto. The flanges 44 and 45 are sandwiched by two flange stopper plates 46, fixed by bolts 461, springs 463, washers 464 and nuts 462, and connected by a connecting jig for these. Others are the same as those in the first embodiment.

In this example, since the molten metal pipe 4 has the spherical connection surfaces 441 and 451, the two molten metal pipes 4 are not arranged exactly in a straight line and have a slight mounting angle. Also, as in the case where they are arranged in a straight line, the spherical connecting surfaces 441 and 451 of both are in contact with each other. Therefore, in the connecting portion 41 of each molten metal pipe 4, even if a slight angular deviation occurs in their mounting state, a gap is unlikely to be formed and the occurrence of leakage of the molten metal 6 is suppressed. Therefore, the molten metal pipe 4, the molten metal supply device 2, and the molten metal pipes 4 can be connected more reliably, and the leakage of the molten metal 6 can be prevented more reliably.

Also at the connecting portion 42, even if the molten metal pipe 4 is not connected to the molten metal supply device 2 at a strictly accurate angle, or if there is a slight deviation, the metal pipe is likewise. The occurrence of leakage of the molten metal 6 is suppressed. Others have the same effects as those of the first embodiment.

Embodiment 3 As shown in FIG. 4, this embodiment shows a connection structure in a connecting portion 43 between the molten metal pipe 4 and the casting machine 3 in the water heater 1. That is, the tip 4 of the molten metal pipe 4
9 and the connection opening 312 of the die casting machine sleeve 31 of the casting machine 3 are connected via an inorganic packing 33 by a connection jig 430 that sandwiches the two from above and below. Further, the molten metal pipes 4 are connected to each other by a connecting jig through an inorganic packing.

The connecting jig 430 has a pressing portion 432 for pressing the die casting machine sleeve 31 from above, and the pressing portion 432 is moved up and down by the rotation of the screw 433. By the pressing portion 432, the die casting machine sleeve 31 and the end portion 49 of the molten metal pipe 4 are
Fix with and sandwiched from above and below. Others are the same as those in the first embodiment.

In this case, the molten metal pipe 4 and the casting machine 3 can be connected more reliably, and the molten metal 6 can be reliably prevented from leaking from the connecting portion 43 of both. That is, the vibration of the casting machine 3 is controlled by the inorganic packing 3
Since it is absorbed by 3, the displacement at the connecting portion 43 is unlikely to occur. Further, since the die casting machine sleeve 31 and the tip end portion 49 of the molten metal pipe 4 are fixed by the connecting jig 430 which is sandwiched from above and below, the connection strength is strong and the displacement due to vibration is unlikely to occur. Other than that, the same effects as those of the first embodiment are obtained. In the above embodiment, the melting and holding furnace 5 has both a melting capacity and a holding capacity for metals, but may have only the holding capacity without the melting capacity.

[Brief description of drawings]

FIG. 1 is a front cross-sectional view of a hot water supply device according to a first embodiment.

FIG. 2 is an operation explanatory view of the molten metal supply device in the hot water supply device according to the first embodiment.

FIG. 3 is a sectional view of a connection portion of a molten metal pipe according to the second embodiment.

FIG. 4 is a cross-sectional view of a connection portion of the opening of the die casting machine sleeve with the molten metal pipe according to the third embodiment.

FIG. 5 is a front sectional view of a water heater according to a conventional example.

FIG. 6 is a front sectional view of a water heater according to another conventional example.

[Explanation of symbols]

1. ． ． Water heater, 2. ． ． Molten metal feeder, 3. ． ． Casting machine, 31. ． ． Die casting machine sleeve, 4. ． ． Molten metal pipe, 41, 42, 43. ． ． Connection, 430. ． ． Connection jig, 44, 45. ． ． Flange, 5. ． ． Melting and holding furnace, 6. ． ． Molten metal, 7. ． ． rail, 71. ． ． Wheel, 72. ． ． Hanging device,

Front Page Continuation (72) Inventor Sumi Yoshikawa 1-1, Showa-cho, Kariya City, Aichi Prefecture Denso Co., Ltd. (72) Inventor Shunji Mochizuki 7-7, Tsurumachi, Amagasaki-shi, Hyogo Tounetsu Co., Ltd. (56) References JP-A-11-197816 (JP, A) JP-A-8-215827 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 17/02, 17/30, 35/00

Claims (5)

(57) [Claims] 1. A casting machine for casting metal, and gold for the casting machine.
A melt supply device for supplying a metal melt, and the above-mentioned casting machine and melt supply device.
Hot water supply equipment having a molten metal pipe connected to a water supply device
At the table, The molten metal supply device isBy being hung from above
,It is arranged swingably in the molten metal in the melting and holding furnace.
Ah, When the casting machine vibrates, the molten pipe and the molten metal
The hot water supply device is free to vibrate together with the casting machine.
Is configured to Gold characterized by
Metal hot water supply device. 2.Casting machine for casting metal and gold for the casting machine
A melt supply device for supplying a metal melt, and the above-mentioned casting machine and melt supply device.
Hot water supply equipment having a molten metal pipe connected to a water supply device
At the table, The molten metal supply device is All in the molten metal in the melting and holding furnace
A metal melt characterized by being arranged so that it can swing in any direction.
Hot water supply device. 3. The molten metal supply apparatus according to claim 2, wherein the molten metal supply device is suspended from a rail provided above the melting and holding furnace via a wheel and a suspending tool movably provided on the rail. A hot water supply device for molten metal. 4. The molten metal pipe according to claim 2 or 3 , wherein each of the molten metal pipes, and the molten metal pipe and the molten metal supply device are connected to each other by a spherical flange having a spherical connecting surface. A hot water supply device for molten metal. 5. The method according to any one of claims 2 to 4 ,
Between the tip of the molten metal pipe and the connection opening of the die casting machine sleeve of the casting machine, or between the molten metal pipes, or between the molten metal pipe and the molten metal supply device,
A hot-water supply device for molten metal, characterized in that they are connected by a connecting jig that sandwiches them via a packing.