JP2562783B2 - Automatic water heater for molten metal - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically supplying molten metal, and more particularly to a ladle holding mechanism for sequentially supplying a small volume of molten aluminum to a pouring port of a die casting machine.

[0002]

2. Description of the Related Art Usually, a ladle is used to automatically supply a small amount of molten aluminum (hereinafter referred to as "molten metal") to a pouring port of a die casting machine. The ladle moves back and forth between the furnace storing the molten metal and the pouring port of the die casting machine to supply the molten metal in the furnace to the die casting machine by a predetermined amount.
FIG. 6 is a sectional view of the ladle. The ladle is composed of a sleeve 101 having a circular cross section, which has an open portion at the top and a molten metal supply / discharge port at the bottom. Sleeve 1
A flange protruding outward in the radial direction is formed on the outer periphery of the upper part of 01, and the bottom part is formed in a tapered shape.
Further, the inner surface and the outer surface of the sleeve 101 are coated with a coating agent 102 to protect the sleeve 101 from corrosion by the molten metal.
Has been applied.

A lid 103 is pressure-bonded to the upper open end of the sleeve 101 by a mounting member 104. Mounting member 1
Reference numeral 04 is a tubular shape, and a holding portion that projects inward in the radial direction is formed in the lower portion, and a female screw is engraved on the inner peripheral surface of the upper portion. On the other hand, the lid 103 is disc-shaped, and a male screw corresponding to the female screw is engraved on the outer peripheral portion thereof. In order to crimp the lid 103 onto the upper open end of the sleeve 101, first, the sleeve 101 is inserted into the mounting member 104, and the lower surface of the flange portion of the sleeve 101 is brought into contact with the holding portion of the mounting member 104 to attach the sleeve 101. Hold.
Next, the attachment member 104 and the screw portions of the lid portion 103 are screwed together to maintain the close contact holding state between the lid portion 103 and the upper open end of the sleeve 101. The lid 103
A seal member (not shown) is sandwiched between the contact surface of the sleeve 101 and the sleeve 101 to prevent the inflow of air from this portion. Further, the through hole 103 is formed in the center of the lid 103.
a is formed, and the pipe 105 is provided in the through hole 103a.
One end of is inserted. At the other end of the pipe 105, an atmosphere communication blocker (not shown) is connected, and the ladle is raised and lowered.
A traveling device (both not shown) is connected.

[0004]

When the amount of hot water supply is changed, or when the ladle is eroded and cannot be used, it is necessary to replace the ladle.
The conventional structure has the following problems in exchanging the ladle. The ladle is a mounting member 104, a lid 103 and a tube 1.
Since it is connected to the elevating and lowering device via 05, the work of removing the ladle in this state must be performed in the vicinity of the furnace and the die casting machine. That is, since the freedom of movement of the ladle is limited without lifting and lowering the integrated body of the ladle and the lid and separating it from the traveling device, the work of exchanging the ladle must proceed in the vicinity of the furnace and the die casting machine in a high-heat environment. I won't. To remove the ladle, screw the mounting member 104
It must be relaxed, but this relaxation is not
Peg. Even if the loosening oil is injected into the threaded portion, the ladle itself becomes hot and evaporates immediately, and the relaxing oil does not play a sufficient role, resulting in a longer working time. As described above, replacement of the ladle requires a great deal of labor and work time. Furthermore, since excessive force is applied to the pipe when the ladle is replaced, there is a problem that the seam of the welded portion of the pipe is easily damaged.

The present invention has been made in view of the above problems, and an object of the present invention is to facilitate the exchange of the ladle and further prevent the joint portion of the pipe from being damaged during the operation of the exchange of the ladle.

[0006]

In order to achieve the above object, the present invention provides a ladle having a molten metal holding space formed therein, an opening portion formed at an upper end portion, and a molten metal supply / discharge port formed at a bottom portion. A lid part having a shape adapted to the open part of the ladle, an attachment means for closely holding the ladle and the lid part, a pipe inserted into a through hole formed in the lid part and communicating with the molten metal holding space, and a pipe In a molten metal automatic hot water supply device comprising an atmosphere communication blocking means for blocking communication between the molten metal holding space and the atmosphere and a moving means for moving the ladle, a ladle holder for supporting the ladle and one end move A pedestal connected to the means and the other end of which is detachably attached to the ladle holder,
It has a ladle that is provided between the atmosphere communication cutoff means and the pipe insertion part of the lid part and is closely held by the mounting means, and a joint for separating the lid part from the atmosphere communication cutoff means. Provided is an automatic hot water supply device for molten metal, which is connected to the means by a heat-resistant flexible hose.

[0007]

[Operation] The ladle holder is disengaged from the gantry, the ladle holder is separated from the gantry, and the ladle side is disengaged from the joint provided between the atmosphere communication blocking means and the pipe insertion portion of the lid to attach the means. Take out the ladle and the lid that are screwed together. Move the taken out ladle and lid unit to a position away from the furnace that stores the molten metal and the die casting machine that supplies the molten metal, remove the lid using a vise, and remove the ladle to create a new ladle. Exchange. The new ladle is installed in the reverse order and ready for use.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the molten metal automatic water heater according to the present invention will be described below with reference to the drawings. Since the ladle and the mounting member 4 used in this embodiment are the same as the conventional one shown in FIG. 6, the description thereof will be omitted.

As shown in FIG. 1, in this embodiment, a cylindrical body having a diameter substantially the same as the outer diameter of the flange portion of the sleeve 1 is formed in a predetermined shape, and the lower portion serves as the lid portion 3 and the upper portion. Is the ladle holder 6. The vertical cross section of the lid 3 is convex downward, and the small-diameter cylindrical portion at the center is the sleeve 1.
The large-diameter step portion comes into contact with the flange portion of the sleeve 1 while being in sliding contact with the inner surface of the sleeve 1. Further, a male screw is engraved on the outer peripheral portion of the lid portion 3, and this male screw is screwed with a female screw engraved on the inner peripheral surface of the mounting member 4, so that the lid portion 3 is sealed with a sealant. It is held in close contact with the open end of the sleeve 1 via.

The ladle holder 6 has two grooves 8 formed by cutting from the upper side surface of the cylindrical body at right angles to the central axis of the cylindrical body, and a positioning hole 9 penetrating each groove 8 in the longitudinal direction. are doing. Each groove 8 has an arcuate planar shape, and two grooves 8 are formed so that the chords of the respective grooves are parallel to each other.

A through hole 3a is formed at the center of the cylindrical body forming the ladle holder 6 and the lid portion 3, and the pipe joint 5 is formed on the upper surface of the ladle holder 6 so as to communicate with the through hole 3a.
a is fixed. The pipe 5 is attached to the pipe joint 5a.
One end of is inserted. A plug 10 is connected to the other end of the tube 5. The plug 10 is for connecting the pipe 5 and the heat-resistant flexible hose 11 (see FIG. 2) to each other, and the heat-resistant flexible hose 11 can be freely attached to and detached from the plug 10. As shown in FIG. 2, the heat-resistant flexible hose 11 is connected by a hose nipple to an atmosphere communication cutoff means 12 having open / close valves 12a and 12b. The atmosphere communication blocking means 12 is a lifting device 1 which will be described later.
3 is fixed to the slider 13b, and the slider 1
Moves up and down with 3b.

The lifting device 13 is a drive motor (not shown).
And a ball screw 13a standing upright in the vertical direction and a slider 13b screwed onto the ball screw 13a. The drive motor is connected to the ball screw. A frame mounting plate 13c is fixed to the slider 13b,
One end of the gantry 14 is fixed to the gantry mounting plate 13c, and the atmosphere communication blocking means 12 is fixed as described above. Also, the lifting device 13 is movably mounted on the traveling device 15.
It is attached.

As shown in FIG. 3, a planar U-shaped or U-shaped claw portion 14a that fits into the groove 8 of the ladle holder 6 is formed at the lower end of the pedestal 14. The claw portion 14a has two claws 14b and 14c, and positioning holes 14d and 14e are formed in each claw. To fit the ladle holder 6 into the pedestal 14, the groove 8 of the ladle holder 6 is inserted into the two claws 14b and 14c of the claw portion 14a, and the positioning holes 14d and 14e of the claw portion 14a and the ladle holder 6 are formed. Match the positioning holes 9
A positioning pin 14f (see FIG. 5) having a head is inserted therein. FIG. 4 is a view showing a state in which the gantry 14 and the ladle holder 6 are fitted together. In order to release the fitting between the gantry 14 and the ladle holder 6, the positioning pin 14f may be pulled out and the ladle holder 6 may be removed from the claw portion 14a.

In using the ladle, first, the lid portion 3 is attached to the open portion of the sleeve 1, and then the sleeve 1 and the lid portion 3 are attached.
Thus, a molten metal storage space is formed in the sleeve 1. next,
The groove 8 of the ladle holder 6 integrally formed with the lid 3 is fitted into the claw portion 14a at the tip of the cradle, and the positioning hole 9 of the ladle holder 6 and the positioning holes 14d and 14e of the claw portion 14a are aligned with each other. The ladle holder 6 and the gantry 14 are fitted by inserting the positioning pin 14f. Finally, plug 10
The flexible hose 11 is attached to and the preparation for using the ladle is completed.

Hot water is supplied to the die casting machine as follows. The ladle is immersed in the molten metal of the furnace to a predetermined depth, and the molten metal is stored in the ladle through the supply / discharge port. When a predetermined amount of molten metal is stored in the ladle, the atmosphere communication cutoff means 12 connected to the pipe 5 is closed to prevent the molten metal provided in the ladle from flowing back through the supply / discharge port, and then the lifting device 13 moves the ladle. While being kept horizontal, it is pulled up from the inside of the molten metal of the furnace and moved to a predetermined position of the die casting machine by the traveling device 15. After that, the atmosphere communication blocking means 12 is opened to inject the molten metal into the die casting machine from the supply / discharge port through the pouring port of the die casting machine.

If it becomes necessary to replace the ladle,
The heat-resistant flexible hose 11 is pulled out from the plug 10, and the ladle is detached from the atmosphere communication blocking means 12, the lifting device 13, and the traveling device 15. Next, the positioning pin 14f inserted in two places is pulled up, and the ladle holder 6
Is pulled out from the claw portion 14a of the gantry 14, and the gantry 14 and the ladle holder 6 are disengaged. The ladle is moved to a place where there is no influence of high heat from the furnace and the die casting machine, fixed on a vise and the like, the lid portion 3 is removed, and the ladle is replaced.

[0017]

As described above, in the apparatus for automatically supplying molten metal according to the present invention, when the ladle is replaced, the ladle is detached from the main unit, so that the high heat from the furnace and the die casting machine is used. The replacement work can be performed in a place that is not affected by the work efficiency. Further, when the ladle is removed, the pipe and the atmosphere communication blocking means are separated from each other, so that the joint of the pipe is not damaged.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a ladle and a ladle holding mechanism according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the entire molten metal automatic water heater according to the embodiment of the present invention.

FIG. 3 is a plan view showing a claw portion provided at the tip of the gantry.

FIG. 4 is a vertical cross-sectional view showing a fitted state of a claw portion and a ladle holder.

FIG. 5 is a vertical sectional view showing a positioning pin used for fitting a claw portion and a ladle holder.

FIG. 6 is a vertical sectional view showing a conventional ladle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 sleeve 2 coating material 3 lid 4 mounting member 5 tube 6 ladle holder 7 sealing material 8 groove 9 positioning hole 10 plug 11 heat-resistant flexible hose 12 atmosphere communication blocking means 13 lifting device 14 platform 15 traveling device

Claims (1)

(57) [Claims] 1. A ladle in which a molten metal holding space is formed inside, an open portion is formed in an upper end portion, and a molten metal supply / discharge port is formed in a bottom portion; a lid portion having a shape adapted to the open portion of the ladle; Means for holding the parts in close contact with each other, a pipe inserted into a through hole formed in the lid and communicating with the molten metal holding space, and an air communication cutoff for cutting the communication between the molten metal holding space and the atmosphere through the pipe And a moving means for moving the ladle, in a molten metal automatic water heater, a ladle holder for supporting the ladle, one end connected to the moving means, and the other end detachably attached to the ladle holder. A pedestal, a ladle that is provided between the atmosphere communication blocking means and the pipe insertion portion of the lid, and is closely held by the mounting means, and a joint that separates the lid from the atmosphere communication blocking means. And atmospheric communication disconnection means An automatic hot water supply system for molten metal, characterized in that a flexible heat-resistant hose is connected between