JPWO2007077800A1 - Container, molten metal supply system and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container, a molten metal supply system and a method in which molten metal is not scattered at the time of supplying molten metal. The container can store molten metal in a container structured to be transported from a first factory to a second factory via a public road, and can supply pressurized gas from the outside to the inside. An airtight container body having a flow path for introducing a molten metal from the inside to the outside by pressurization, which is provided from a gas introduction part for introduction and an inner bottom part toward a pipe attachment part on the upper surface part, and pipe attachment A pipe that communicates with the flow path at the part, extends upward from the pipe mounting part, bends in a substantially horizontal direction at a predetermined position, goes downward at a predetermined position, and has a discharge port at the front end facing downward. And a cap-shaped member that is disposed at the distal end, communicates with the outlet, and has a diameter that increases downward from the outlet. [Selection] Figure 1

Description

  The present invention relates to a molten metal supply system used for supplying molten aluminum, for example, a container used therefor, and a method using the same.

In a factory where aluminum is formed using a large number of die-casting machines, aluminum materials are often supplied not only from within the factory but also from outside the factory. In this case, the container containing the molten aluminum is transported from the material supply side factory to the molding side factory via a public road, and the molten material is supplied to each die-casting machine. It has been broken. Conventionally used containers have a structure like a teapot in which a supply channel is provided on the side wall of a container body in which molten metal is stored. By tilting the container, molten metal is supplied from the flow path to the holding furnace on the molding side (see Patent Document 1).
No. 4-4646

  The present inventors have developed a pressurized container from the viewpoint of safety and workability. This pressurized container can also be transported between factories via public roads. Various ideas have been made for this purpose.

  For example, in the case of a pressurized container, for example, a pipe for leading molten aluminum to a predetermined position is attached to the upper surface side of the container body. This piping communicates with the flow path from the inner bottom portion of the container body toward the upper surface portion. The pipe extends upward from the pipe mounting portion on the upper surface portion of the container body, bends in a horizontal direction at a predetermined position, and goes downward at a predetermined position. The outlet at the tip of the pipe faces downward.

  However, when molten aluminum is supplied to the holding furnace from the outlet at the tip of the piping, the problem is that the molten aluminum scatters from the surface of the molten aluminum stored in the holding furnace, contaminates the surroundings, and is extremely dangerous. There is.

  An object of the present invention is to provide a container, a molten metal supply system, and a method in which molten metal does not scatter when supplying molten metal.

  The container according to the present invention is a container that can be transported from a first factory to a second factory via a public road, can store molten metal, and introduces pressurized gas from the outside to the inside. A sealed container body having a flow path for leading molten metal from the inside to the outside by pressurization, and a pipe mounting portion A pipe that communicates with the flow path, extends upward from the pipe mounting portion, bends in a substantially horizontal direction at a predetermined position, downwards at the predetermined position, and a leading end outlet port faces downward, and a pipe tip And a cap-shaped member having an opening communicating with the outlet and having a diameter that increases downward from the outlet.

  According to such a configuration of the present invention, since the cap-shaped member is arranged at the tip of the pipe, when the molten metal is supplied to the holding furnace via the pipe, the molten metal is at the liquid level of the holding furnace. Even if splatters, the splattering is blocked by the shade-shaped member and the surroundings are not soiled. Moreover, since the very high temperature molten metal is prevented from being scattered, the safety of handling the molten metal is improved. Also, conventionally, the amount of molten metal remaining in the container is reduced, and when trying to derive the molten metal from the inside of the container to the end, the molten metal entrained with air is led out and the molten metal is scattered, and the surroundings are soiled. It was very dangerous. For this reason, in order to avoid this scattering, it was necessary to leave the molten metal in the container. On the other hand, in the present invention, since the splash of the molten metal is blocked by the cap-shaped member, all the molten metal can be supplied without considering the splash of the molten metal, and the supply efficiency of the molten metal is good. .

  Here, the degree of sealing in the sealed container main body is, as a matter of course, as long as the pressure can be maintained so as to push the molten metal up to the uppermost part of the pipe. For example, a siphon-type ladle is excluded.

  The shade-shaped member may be detachable from the pipe. Thereby, even if the cap-shaped member is dirty, it can be easily replaced.

  The shade-shaped member may be a metal of the same material as the molten metal. Thereby, for example, when the cap-shaped member is contaminated, the cap-shaped member can be put into the holding furnace as it is, and the cap-shaped member can be reused as the molten metal.

  The shade-shaped member may be a mesh shape. Thereby, the shade shape part can be reduced in weight.

  It is preferable that the substantially horizontal portion of the pipe tilts upward as the pipe moves away from the container body. Immediately after the supply of the molten metal is stopped, the molten metal remaining in the substantially horizontal portion of the pipe flows back to the main body side, and the molten metal directed to the outlet port at the tip of the pipe can be reduced.

  A molten metal supply system according to another aspect of the present invention is a container having a structure that can be transported from a first factory to a second factory via a public road, and can store molten metal. A gas introduction part for introducing pressurized gas from the inside to the inside and a gas inlet part that is provided from the inner bottom part toward the pipe mounting part on the upper surface part, and has a flow path for deriving molten metal from the inside to the outside by pressurization. A container body of the mold, communicated with the flow path in the pipe mounting portion, extends upward from the pipe mounting portion, bends in a substantially horizontal direction at a predetermined position, and downwards at a predetermined position, leading to a leading end outlet And a cap shape in which the opening is connected to the leading end of the pipe and is detachable from the pipe, the opening communicates with the outlet, and the diameter of the opening increases downward from the outlet. And the container are detachably held. A holding portion which comprises said gas introduction portion into pressurized gas the gas supply unit for introducing, and a container carrying vehicles and a control unit for controlling the removal of members of the umbrella-shaped.

  According to the present invention, the surroundings of the holding furnace are not contaminated, the safety of handling the molten metal is improved, and the molten metal supply efficiency is good. In addition, for example, a worker on a container transporting vehicle can operate removal of the shade-shaped member, so that workability is good and work safety is also good.

  According to still another aspect of the present invention, there is provided a container having a structure capable of being transported from a first factory to a second factory via a public road, capable of storing molten metal, and externally. A sealed type having a gas introduction part for introducing pressurized gas into the inside and a pipe attachment part from the inner bottom part to the pipe attachment part on the upper surface part, and a flow path for deriving molten metal from the inside to the outside by pressurization The container body and the pipe attachment portion communicate with the flow path, extend upward from the pipe attachment portion, bend in a substantially horizontal direction at a predetermined position, face downward at the predetermined position, and the outlet port of the tip is downward A pipe that faces the pipe, and is detachably disposed from the pipe at a tip portion of the pipe, the opening communicates with the outlet, and the diameter of the opening increases downward from the outlet, and the molten metal And a cap-shaped member made of the same metal as A method of sequentially supplying molten metal to a plurality of holding furnaces using a container provided therein, wherein a pressurized gas is introduced into the container body from the gas introduction part, and the inside of the container body is brought into a pressurized state, and the piping And a step of deriving the molten metal to the holding furnace through a step, and a step of dropping the cap-shaped member into the holding furnace.

  According to the present invention, the surroundings of the holding furnace are not contaminated, the safety of handling the molten metal is improved, and the molten metal supply efficiency is good. In addition, for example, when the shade-shaped member is contaminated, the shade-shaped member can be put into the holding furnace as it is, and the shade-shaped member can be reused as a molten metal.

  According to the present invention, the molten metal can be prevented from being scattered when the molten metal is supplied, so that the surroundings are not soiled and the safety of handling the molten metal is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a sectional view showing a configuration of a container according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.

  The container 1 includes a container body 2 having a lid 3 and a pipe 4.

  The container main body 2 includes a frame main body 6 made of metal having a bottom and an opening in the upper part and having a substantially cylindrical shape, an elastic heat insulating layer 7 laid on the inner wall of the frame main body 6, and a fireproof layer 8. And inside the refractory layer 8, a storage part 9 for storing molten aluminum as a molten metal is provided.

  A flange 10 is provided on the outer periphery of the opening of the frame body 6. A pair of channel members 11 are attached to the outer bottom portion of the frame body 6. A fork of a forklift for transporting the container 1 can be inserted into and removed from the channel member 11.

  On the inner peripheral wall of the refractory layer 8, a raised portion 12 protruding toward the storage portion 9 is provided integrally with the refractory layer 8 in the vertical direction. A flow path 13 is provided inside the raised portion 12 for circulating molten aluminum between the outside along the extending direction of the raised portion. This flow path 13 penetrates from a position close to the bottom of the reservoir 9 to the upper surface of the reservoir 9.

  For example, a ceramic pipe 14 is integrally fixed to the flow path 13. Thereby, the gas can be prevented from entering the flow path 13 when the reservoir 9 is pressurized.

  The lid 3 includes a large lid 15 and a hatch (small lid) 16. A flange 16 a is provided on the outer periphery of the large lid 15, and the lid 3 is fixed by tightening a bolt 17 between the flange 16 a and the flange 10 provided on the outer periphery of the opening of the frame main body 6. Is to be sealed.

  The large lid 15 is provided with an opening 18, and a hatch (small lid) 16 to which a handle 19 is attached is disposed in the opening 18. The hatch 16 is provided at a position slightly higher than the upper surface of the large lid 15. The hatch 16 is attached to the large lid 15 via a hinge 20 at one location on the outer periphery. Thereby, the hatch 16 can be opened and closed with respect to the opening 18 of the large lid 15. Further, bolts 21 with handles for fixing the hatch 16 to the large lid 15 are attached to four locations on the outer periphery of the hatch 16. The hatch 16 is fixed to the large lid 15 by closing the opening 18 of the large lid 15 with the hatch 16 and rotating the bolt 21 with a handle. Further, the bolts 21 with the handle can be rotated in reverse to release the fastening and the hatch 16 can be opened from the opening 18 of the large lid 15. And the maintenance of the inside of the container 1 and the insertion of the gas burner at the time of preheating are performed through the opening part 18 with the hatch 16 opened.

  Further, an internal pressure adjusting passage 19 is provided at the center of the hatch 21 or at a position slightly deviated from the center to reduce the pressure in the container 1 and pressurize it. The passage 19 is connected with a pressure-intensifying pipe 22. The pipe 22 extends upward from the passage 19, bends at a predetermined height, and extends horizontally therefrom. The surface of the portion of the pipe 22 inserted into the passage 19 is threaded, while the passage 19 is also threaded so that the pipe 22 is fixed to the passage 19 by screwing. It has become. Electrode rods 23 for detecting the liquid level are inserted at four positions with a predetermined interval between the hatches 21. The large lid 15 and the hatch 16 have a structure in which a lining (lamination of a heat insulating layer and a fireproof layer) is provided inside a metal frame.

  An opening 24 is provided at a position corresponding to the flow path 13 of the large lid 15. The outer periphery is raised, and a flange 25 as a pipe mounting portion is provided on the outer periphery of the raised tip. The flange 25 is fastened by a flange 26 and a bolt 27 provided on the pipe 4, and the pipe 4 is fixed to the container body 2.

  The pipe 4 includes a first portion 28 that extends upward from the upper surface of the container body 2, a second portion 29 that is continuous with the first portion 28 and has an inclination that increases upward as the distance from the container body 2 increases. A third portion 30 that is continuous with the second portion 29 and that extends downward, and a cap-shaped member 40 that is attached to the tip of the third portion 30 and that has an opening whose diameter increases downward. . The shade-shaped member 40 has a through-hole, and one end thereof is fitted into the tip of the third portion 30. In other words, the pipe 4 has a downward outlet 31 for leading the molten aluminum stored in the container body 2 to the outside, and the outlet 31 is gradually increased in size toward the bottom. The shape has a shape. The pipe 4 extends to the outer periphery of the container body 2.

  Note that molten aluminum may be introduced into the container body 2 from the outside through the pipe 4 from the outlet 31. In that case, the outlet 31 may be positioned below the molten aluminum surface of the external reservoir, for example, and the inside of the container body 2 may be depressurized.

  The cap-shaped member 40 is detachable from the pipe 4 and is made of aluminum which is the same material as the molten metal stored in the container body 2. The shade-shaped member 40 can be manually attached to and detached from the pipe 4. For example, a spiral groove is provided on the front end surface of the pipe 40, and a spiral groove is also provided on the inner surface of the cap-shaped member 40 so as to fit into this, and the cap-shaped member 40 is attached to and detached from the pipe 4 by a screw method. Can be possible.

  FIG. 3 is a front view showing a configuration of a molten metal supply system including the above-described container 1 according to an embodiment of the present invention.

  The molten metal supply system 100 includes a container 1 and a forklift 50 as a vehicle that holds the container 1.

  The forklift 50 includes a fork 51, a carriage 52 to which the fork 51 is attached, and an elevating mechanism 53 that raises and lowers the carriage 52.

  In the upper part of the driver's seat 54 of the forklift 50, power is generated by a reserve tank 55 as a pressurized gas storage tank for supplying a pressurized gas, for example, high-pressure air to the container 1, and a generator not shown. An air compressor 56 driven by electric power and a vacuum pump 57 driven by a generator are provided.

  The reserve tank 55 and the vacuum pump 57 are connected to the pipe 22 of the container 1 through an air hose 58. The air hose 58 and the pipe 22 are made detachable by, for example, a plug and a socket constituting a coupler being attached to the connecting portions at the respective ends. Switching between pressurization and depressurization of the container 1 can be performed by a local operation panel (not shown) and can be performed by a switching valve.

  When the molten aluminum stored in the container 1 is supplied to the die cast machine via the pipe 4, the pressurized gas stored in the reserve tank 55 is introduced into the container body 2 via the air hose 58 and the pipe 22. This is performed by pressurizing the inside of the container 1.

  Here, when the molten aluminum in the container 1 is supplied to the die cast machine, the molten aluminum is scattered on the surface of the molten aluminum stored in the die cast machine, and the surroundings are contaminated. It was dangerous. On the other hand, in this embodiment, since the shade-shaped member 40 is attached to the end of the pipe 4, the scattered aluminum is blocked by the shade-shaped member 40 and the surroundings are not soiled. Moreover, scattering of very high temperature molten aluminum is prevented, and the safety of handling molten aluminum is improved.

  Further, conventionally, when the amount of molten aluminum in the container 1 is reduced and the molten aluminum is led out from the container 1 to the end, the molten aluminum entrained with air is led out and the molten aluminum scatters and stains the surroundings. It was also very dangerous. For this reason, in order to avoid this scattering, it was necessary to leave molten aluminum in the container. On the other hand, in this embodiment, since the splash of molten aluminum is interrupted by the cap-shaped member 40 of the pipe 4, it is not necessary to consider the splash of molten aluminum, and all the molten aluminum in the container 1 can be used up. The material supply efficiency is good.

  In this embodiment, since the cap-shaped member 40 is detachable, when the cap-shaped member 40 becomes dirty, replacement is easy. In this embodiment, the cap-shaped member 40 is made of aluminum, which is the same material as the molten aluminum stored in the container 1, so that the cap-shaped member 40 is left in the holding furnace or in the molten aluminum external storage tank. The cap-shaped member 40 can be reused as the molten aluminum material.

  Further, the shade-shaped member 40 may have a mesh shape, and by making the mesh shape, the weight of the shade-shaped member 40 can be reduced.

  Next, as another embodiment, a structure for attaching a member different from the above-described embodiment to a pipe will be described with reference to FIGS. In addition, about the structure similar to the above-mentioned molten metal supply system shown in FIG. 3, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  FIG. 4 is a front view showing a configuration of a molten metal supply system according to another embodiment of the present invention. Fig.5 (a) is an expanded sectional view of the front-end | tip of piping before attaching a member. FIG. 5B is an enlarged cross-sectional view of the distal end of the pipe after the members are attached, and the illustration of the ring is omitted here. FIG. 6 is a plan view of the ring. FIG. 7 is an enlarged cross-sectional view of the tip of the pipe with the ring attached.

  As shown in FIG. 4, the molten metal supply system 200 includes a container 101 and a forklift 150 as a vehicle that holds the container 101.

  The pipe 104 includes a first part 129 that extends upward from the upper surface of the container body 2, a second part 129 that is continuous with the first part 128 and has an inclination that goes upward as the distance from the container body 2 increases. A third portion 130 that is continuous with the second portion 129 and is directed downward, and a shade-shaped member 40 that is attached to the tip of the third portion 130 and that has a larger shape toward the lower portion. To do. The cap-shaped member 40 has a through-hole, and one end thereof is fitted into the tip of the third portion 130. In other words, the pipe 104 has a downward outlet 131 for leading the molten aluminum stored in the container body 2 to the outside, and the diameter of the outlet 131 is gradually increased downward. It has a shape with a shade shape.

  As shown in FIG. 5A, for example, four rod-like flexible members 131 are provided in the third portion 130 of the pipe 104. One end of each flexible member 131 is fixed to the third part 130, and the other part is movable toward the pipe 130 with this fixed part as a fulcrum. In a state where the shade-shaped member 40 is not attached, the flexible member 131 has a shape that is obliquely separated from the pipe 104 except for the fixed portion. Then, as shown in FIG. 5B, in the state where the cap-shaped member 40 is attached, the flexible member 131 is bent so as to be in contact with the pipe 104, and the flexible member 131 shown in FIG. The shade-shaped member 40 is fixed to the pipe 104 by the force that the flexible member 131 tries to move away from the pipe 104 so as to return to the shape.

  The cap-shaped member 40 has a cylindrical portion and a cap-shaped portion whose opening area gradually increases downward. As shown in FIG. 4, in the molten metal supply system 200, a ring 71 is provided so as to surround the cylindrical portion of the shade-shaped member 40. The ring 71 has an inner diameter that is slightly larger than the outer diameter of the cylindrical portion of the cap-shaped member 40, and can be connected to and removed from the wire 70 described later, as shown in FIG. The cap-shaped member 40 is attached to the pipe 130 in a state where the ring 71 is passed through the cap-shaped member 40. Then, as shown in FIGS. 4 and 7, after attaching the cap-shaped member 40 to the pipe 130, the ring 71 is connected to the wire 70 provided in the forklift 150.

  As shown in FIG. 4, the wire 70 is directed through a guide member (not shown) provided on the flange 16 of the large lid 15, for example, in a direction substantially opposite to the extending direction of the pipe 104, for example. It extends to the outside of the outer periphery. A wire pulling / returning mechanism 59 for pulling / returning the wire 70 is provided on the support column in the direction substantially opposite to the extending direction of the pipe 104 of the carriage 52. The wire pulling / returning mechanism 59 has an air cylinder 60 driven by pressurized gas from the reserve tank 55, for example. A wire 70 is detachably connected to the tip of the drive shaft 61 of the air cylinder 60. And the wire 70 is pulled or returned by moving the drive shaft 61 up and down.

  As the wire 70 is stretched, the wire 70 and the ring 71 move downward as shown by a dotted line portion in FIG. As the ring 71 moves, the cap-shaped member 40 is pulled downward and removed from the pipe 104. Such a movement operation of the ring 71 can be performed by, for example, a switch arranged on a hand control panel (not shown).

  As described above, in this embodiment, as the means for removing the cap-shaped member 40, the forklift 150 is provided with the wire 70 and the wire pulling / returning mechanism 59 connected to the ring 71, so that the cap-shaped member 40 is removed. It can be operated on the forklift 150. Thereby, the shade-shaped member 40 can be thrown into the holding furnace of the die-casting machine or the molten aluminum external storage tank by remote control without touching the operator's hand, which is safe.

  FIG. 8 is a diagram showing the overall configuration of the metal supply system according to the present invention.

  As shown in the figure, the first factory 310 and the second factory 320 are provided, for example, in places separated by a public road 330.

  In the first factory 310, a plurality of die-cast machines 311 as use points are arranged. Each die-casting machine 311 uses molten aluminum as a raw material and molds a product having a desired shape by injection molding. Examples of the product include parts related to an automobile engine. Of course, the molten metal is not limited to an aluminum alloy but may be an alloy mainly composed of other metals such as magnesium and titanium. A holding furnace (hand holding furnace) 312 for temporarily storing molten aluminum before a shot is disposed near each die-casting machine 311. A plurality of shots of molten aluminum are stored in the holding furnace 312 so that molten aluminum is injected from the holding furnace 312 to the die-cast machine 311 via a ladle 313 or a pipe every shot. It has become. Each holding furnace 312 has a liquid level detection sensor (not shown) for detecting the liquid level of molten aluminum stored in the container and a temperature sensor (not shown) for detecting the temperature of molten aluminum. Has been placed. The detection results by these sensors are transmitted to the control panel of each die-casting machine 311 or the central control unit 316 of the first factory 310.

  The container 1 received in the receiving section of the first factory 310 is delivered to a predetermined die cast machine 311 by the forklift 50 according to the present invention, and molten aluminum is supplied from the container 1 to the holding furnace 312. Yes. The container 1 that has been supplied is returned to the receiving part by the forklift 50 again.

  The first factory 310 is provided with a first furnace 319 for melting aluminum and supplying it to the container 1. The container 1 supplied with molten aluminum by the first furnace 319 is also provided by the forklift 50. It is delivered to a predetermined die-cast machine 311.

  The first factory 310 is provided with a display unit 315 that displays when it is necessary to add molten aluminum in each die-cast machine 311. More specifically, for example, a unique number is assigned to each die-casting machine 311, and the number is displayed on the display unit 315, corresponding to the number of the die-casting machine 311 that requires addition of molten aluminum. The number on the display unit 315 to be lit is turned on. Based on the display on the display unit 315, the worker uses the forklift 50 to carry the container 1 to the die cast machine 311 corresponding to the number and supplies molten aluminum. The display on the display unit 315 is performed by the central control unit 316 controlling based on the detection result by the liquid level detection sensor.

  The second factory 320 is provided with a second furnace 321 for melting aluminum and supplying it to the container 1. A plurality of types of containers 1 having different capacities, pipe lengths, heights, widths, and the like are prepared. For example, there are a plurality of types having different capacities depending on the capacity of the holding furnace 312 of the die cast machine 311 in the first factory 310. The container 1 supplied with molten aluminum by the second furnace 321 is placed on a transporting truck 332 by a forklift. The truck 332 carries the container 1 through the public road 330 to the receiving part of the first factory 310. Further, the empty container 1 in the receiving part is returned to the second factory 320 by the truck 332.

  The second factory 320 is provided with a display unit 322 for displaying when it is necessary to add molten aluminum to each die-casting machine 311 in the first factory 310. The configuration of the display unit 322 is almost the same as that of the display unit 315 disposed in the first factory 310. The display on the display unit 322 is performed by, for example, being controlled by the central control unit 316 in the first factory 310 via the communication line 333. In the display unit 322 in the second factory 320, it has been determined that molten aluminum is supplied from the first furnace 319 in the first factory 310 among the die-cast machines 311 that require supply of molten aluminum. The die cast machine 311 is displayed separately from the other die cast machines 311. For example, the number corresponding to the die cast machine 311 determined as described above blinks. As a result, it is possible to prevent the molten aluminum from being accidentally supplied from the second factory 320 side to the die cast machine 311 that is determined to be supplied with the molten aluminum from the first furnace 319. In addition to the above, the display unit 322 also displays data transmitted from the central control unit 316.

  Next, the operation of the metal supply system configured as described above will be described.

  The central control unit 316 monitors the amount of molten aluminum in each holding furnace 312 via a liquid level detection sensor provided in each holding furnace 312. Here, when a need to supply molten aluminum occurs in a certain holding furnace 312, the central control unit 316 detects the “unique number” of the holding furnace 312 and a temperature sensor provided in the holding furnace 312. “Temperature data” of the holding furnace 312, “morphological data” regarding the form of the holding furnace 312, final “time data” in which molten aluminum disappears from the holding furnace 312, “traffic data” of the public road 330, its holding The “amount data” and “temperature data” of the molten aluminum required in the furnace 312 are transmitted to the second factory 320 side via the communication line 333. In the second factory 320, these data are displayed on the display unit 322. Based on these displayed data, the operator empirically reaches the holding furnace 312 immediately before the molten aluminum runs out of the holding furnace 312, and the second temperature is such that the molten aluminum at that time reaches a desired temperature. The shipping time of the container 1 from the factory 320 and the temperature at the time of shipping the molten aluminum are determined. Alternatively, these data are taken into, for example, a personal computer (not shown) and the container 1 arrives at the holding furnace 312 immediately before the molten aluminum runs out from the holding furnace 312 using predetermined software, and the molten aluminum at that time has a desired temperature. The shipping time of the container 1 from the second factory 320 and the temperature when the molten aluminum is shipped may be estimated and the time and temperature may be displayed. Alternatively, the temperature of the second furnace 321 may be automatically controlled based on the estimated temperature. The amount of molten aluminum to be accommodated in the container 1 may also be determined based on the “quantity data”.

  When the truck 332 on which the container 1 is loaded departs at the shipping time and arrives at the first factory 310 through the public road 330, the container 1 is received from the truck 332 into the receiving unit.

  Thereafter, the received container 1 is delivered to a predetermined die casting machine 311 by the forklift 50, and molten aluminum is supplied from the container 1 to the holding furnace 312.

  In the above embodiment, the forklift 50 is configured to supply molten aluminum to the holding furnace 312 while holding the container 1. As a result, the forklift 50 and the container 1 can be operated as a stand-alone type without receiving supply of air or the like in the factory. However, the present invention is not limited to such a form. For example, as shown in FIG. 9, a holding table 400 that holds the container 1 is disposed near the holding furnace 312, and the forklift 50 changes the holding table 400. The container 1 is once delivered and the molten aluminum is supplied from the container 1 to the holding furnace 312 in this state. When the container 1 held on the holding table 400 is supplied to the holding furnace 312, the forklift 50 may receive the container 1 from the holding table 400 and carry it to another holding furnace.

  In the system shown in FIG. 9, the holding furnace 312 is provided with an opening / closing lid 401. With the lid 401 opened, molten aluminum is supplied from the container 1 to the holding furnace 312. When not supplied, the lid 401 is closed. Thereby, the oxidation of the molten aluminum in the holding furnace 312 can be prevented.

  A monitoring operation unit 402 is provided near the holding furnace 312. In this monitoring operation unit 402, an operator 403 works. There is a floor at a slightly higher position so that the worker 403 can look inside from the upper part of the holding furnace 312 with the worker 403 standing on the monitoring operation unit 402. Therefore, the worker 403 goes up to the monitoring operation unit 402 through the stairs 404. A handy operation box 405 is disposed in the monitoring operation unit 402. In the hand operation box 405, the air supply to the container 1 can be turned on / off. Needless to say, a liquid level detection sensor may be provided in the holding furnace 312 so that the air supply to the container 1 is controlled on and off according to the upper limit U and lower limit L of the liquid level.

  A weighing scale 406 is disposed on the holding table 400. The weigh scale 406 measures the weight of the container 1 held on the holding table 400. Based on the result measured by the weigh scale 406, for example, the amount of molten aluminum supplied to the holding furnace 312 is controlled, for example, the fullness of the holding furnace 312 is detected and the air supply to the container 1 is stopped. Further, based on the result measured by the weighing scale 406, the empty state of the container 1 is detected. When the empty state is detected, for example, the operator 403 is notified of the empty state by turning on a lamp (not shown).

  Factory side air 407 is supplied to the container 1 held on the holding table 400. For example, the air 407 is supplied to the container 1 via the pressure gauges 408 and 409, the atmosphere release valve 410, the pressure control valve 411, the atmosphere release valve 412, and the foreign matter removal filter 413.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. The scope of the implementation is also within the scope of the present invention.

It is sectional drawing which shows the structure of the container which concerns on one Embodiment of this invention. It is a top view of the container shown in FIG. It is a top view which shows the structure of the molten metal supply system which concerns on one Embodiment of this invention. It is a top view which shows the structure of the molten metal supply system which concerns on other embodiment of this invention. It is the expanded sectional view of the front-end | tip of piping which concerns on other embodiment, and the expanded sectional view of the front-end | tip of piping of the state which attached the cap-shaped member. It is a top view of the ring which concerns on other embodiment. It is an expanded sectional view of the tip of piping in the state where a member was attached using a ring. It is a figure showing the whole metal supply system composition concerning the present invention. It is a figure which shows the structure of the molten metal supply system which concerns on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Container 2 Container main body 4,104 Piping 31,131 Outlet port 40 Shade-shaped member 50,150 Forklift 59 Wire drawing / returning mechanism 70 Wire 71 Ring 100,200 Molten metal supply system

Claims (11)

In a container structured to be transported from a first factory to a second factory via a public road,
Molten metal can be stored, and is provided from the outside to the gas inlet for introducing pressurized gas into the inside and from the inner bottom to the pipe mounting portion on the upper surface, and the molten metal is led from the inside to the outside by pressurization. A sealed container body having a flow path for,
The pipe attachment portion communicates with the flow path, extends upward from the pipe attachment portion, bends in a substantially horizontal direction at a predetermined position, faces downward at the predetermined position, and the outlet of the tip portion faces downward. Piping,
A cap-shaped member disposed at a distal end portion of the pipe, having an opening communicating with the outlet, and having a diameter of the opening that increases downward from the outlet. The container according to claim 1,
The said cap-shaped member is a container which can be attached or detached from the said piping. The container according to claim 1,
The cap-shaped member is a container made of the same metal as the molten metal. The container according to claim 1,
The cap-shaped member is a container having a mesh shape. The container according to claim 4,
The said cap-shaped member is a container which can be attached or detached from the said piping, and consists of a metal of the same material as the said molten metal. The container according to claim 1,
The said container main body is the container sealed so that the pressure more than the grade which pushes up the said molten metal to the uppermost part of piping may be maintained. Introducing gas for introducing a pressurized gas from the outside to the inside, which is a container that can be transported from a first factory to a second factory via a public road, can store molten metal A sealed container main body having a flow path for leading molten metal from the inside to the outside by pressurization, and the flow path at the pipe mounting section. A pipe that extends upward from the pipe mounting portion, bends in a substantially horizontal direction at a predetermined position, goes downward at a predetermined position, and has a leading end outlet port facing downward, and a front end portion of the pipe A cap-shaped member that is detachably disposed from the pipe, has an opening communicating with the outlet, and the diameter of the opening increases downward from the outlet;
A container carrying vehicle having a holding part for detachably holding the container, a gas supply part for introducing a pressurized gas into the gas introduction part, and a control part for controlling the removal of the cap-shaped member; A molten metal supply system comprising: The molten metal supply system according to claim 7,
The said cap-shaped member is a molten metal supply system which consists of a metal of the same material as the said molten metal. The molten metal supply system according to claim 7,
The shade-shaped member is a molten metal supply system having a mesh shape. The container according to claim 9,
The cap-shaped member is a container made of the same metal as the molten metal. Introducing gas for introducing a pressurized gas from the outside to the inside, which is a container that can be transported from a first factory to a second factory via a public road, can store molten metal A sealed container main body having a flow path for leading molten metal from the inside to the outside by pressurization, and the flow path at the pipe mounting section. A pipe that extends upward from the pipe mounting portion, bends in a substantially horizontal direction at a predetermined position, goes downward at a predetermined position, and has a leading end outlet port facing downward, and a front end portion of the pipe A cap-shaped member made of a metal of the same material as the molten metal, wherein the opening communicates with the outlet, the diameter of the opening increases downward from the outlet, Using a container equipped with A sequentially supplies way of the holding furnace,
Introducing a pressurized gas into the container body from the gas introduction part to bring the inside of the container body into a pressurized state, and leading the molten metal to the holding furnace through the pipe;
Dropping the cap-shaped member into the holding furnace.

Images