JPH03226346A - Device for pouring molten metal - Google Patents

Abstract

PURPOSE:To miniaturize a molten metal pouring device by setting a triangle ladle, which can supply the molten metal into base end part of a pouring trough as possible to insert top part toward a rotary metal flask, at side part of the base end part of pouring trough. CONSTITUTION:In the molten metal pouring device for pouring the molten metal into the rotary metal flask 1 in centrifugal casting apparatus, the pouring trough 8, which can insert the tip part into inner part of the rotary metal flask 1, and the triangle ladle 17, which can supply the molten metal into the base end part of this pouring trough 8, are provided. Then, this triangle ladle 17 is set at the side part of base end part in the pouring trough 8. By this method, even in the case of setting the triangle ladle 17 to lower position, this is not interferred with the rotary driving device 13 set by connecting with the base end part of pouring trough 8. Therefore, large scale structure for setting the triangle ladle 17 at high position is made to be unnecessary and the whole molten metal pouring device can be made to small.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pouring device, and more particularly to a pouring device used for pouring metal into a rotating metal frame in a centrifugal casting machine.

Conventional technology Conventionally, in centrifugal casting equipment for manufacturing cast iron pipes, etc., the pouring device that pours molten metal into the rotating metal frame has a pouring gutter whose tip can be inserted into the rotating metal frame with a square shape. It is generally configured to supply molten metal from a pot through a chute. With this configuration, the tilt angle of the conformal ladle is proportional to the amount of hot water dispensed, so a fixed amount of molten metal can be poured by simply controlling the conformal ladle by tilting it at a constant speed. ,
By pouring the metal in a constant quantity in this manner, the wall thickness and structure of the cast iron pipe become uniform, resulting in a high-quality product.

Such a conventional pouring system! To explain the configuration more specifically, the pouring gutter is configured to be rotatable around its longitudinal axis, and a rotation driving means is connected to the base end of the pouring gutter. A square ladle is disposed above the rotary drive device, and a chute for flowing the molten metal at the base end of the pouring gutter is disposed below the spout of the square ladle. There is.

Problems to be Solved by the Invention However, in such a conventional configuration, the square ladle is provided above the rotational drive device of the pouring gutter, so it is difficult to place the heavy square ladle in a high position! This poses a problem in that the entire pouring device becomes larger. In addition, because the height of the spout of the square ladle increases, the outflow speed of the molten metal increases, and when the pouring device starts moving backwards at the start of pouring, combined with inertia, a large amount of molten metal is poured at once. be done. For this reason, not only does the end plate of the rotary metal frame have to be made larger, but there is also the risk of forming a melting hole. In addition, especially in the case of the dry coating casting method in which mold coating material is sprinkled on the front side of the pouring surface 1 on the inner surface of the metal frame during pouring, if a large amount of molten metal is supplied at the same time, the coating material may be rolled into the molten metal or coated. There is a problem in that the molten metal flows into areas where the mold material is not spread, which tends to cause casting defects. Furthermore, since the spout is high, the chute becomes large, and when the pouring gutter is turned over for M pig iron processing, the chute cannot be rotated, and the chute and pouring gutter are separated. There is also the problem that the structure must be divided into parts, making the structure complicated.

Therefore, the present invention solves these problems, does not increase the overall size, does not cause the flow rate of the molten metal to become excessive, and therefore does not cause the coating material to be caught in the dry coating casting method. A pouring system that can integrate the pouring gutter and the pouring gutter! The purpose is to provide

Means for Solving the Problems In order to achieve the above objects, the present invention provides a pouring gutter whose tip can be inserted into the interior of a rotating metal frame, and a conformal pouring gutter capable of supplying molten metal to the base end of the pouring gutter. The square ladle is arranged on the side of the base end of the pouring gutter.

Effect: According to this configuration, even if the conformal ladle is installed at a low position, it will not interfere with the rotational drive device connected to the base end of the pouring gutter. There is no need for a large-scale structure to place the molten metal in a high position, so the overall structure can be made smaller, and the height of the spout of the square ladle can be lowered, which prevents the outflow rate of the molten metal from being excessive. This eliminates the risk of a large amount of molten metal flowing out at once at the start of pouring, creating a molten metal boundary, or of mold coating material getting caught up in the dry coating casting method, resulting in defects. Furthermore, since the height of the spout of the square ladle is low, the chute can be downsized, and the chute can be rotated integrally with the pouring gutter, resulting in a simple configuration.

Embodiment In FIGS. 1 and 2, reference numeral 1 denotes a rotating metal frame, which is supported by a support roller 2 so as to be freely rotatable around an axis.

At a position facing the end face of the rotary metal frame 1, there is provided a pouring cart 3 that is movable along a pair of guide rails 4 parallel to the axis of the rotary metal frame I. A rack 5 is provided between 4 and 4, and a drive gear 7 rotated by a drive motor 6 installed on the pouring cart 3 meshes with this rack 5, and the driving motor 6 moves the pouring cart 3. It is configured as follows.

A pouring gutter 8 is attached to one side of the pouring truck 3 so as to be rotatable about its axis.

The pouring gutter 8 is configured to extend toward the rotary metal frame 1 so that it can be inserted into the rotary metal frame 1. The pouring truck 3 is provided with a pair of rollers 10 near the base end of the pouring gutter 8, and these rollers 10 rotatably support the support ring 9. 11 is a support member;
These rollers 10 are supported at predetermined positions. The base end of the pouring gutter 8 is connected via a connecting member 12 to a rotation drive device 13 that rotates the pouring gutter 8 around its axis.

This rotary drive device 13 is supported by a bracket 15 installed on a pedestal 14 provided on the side of the pouring base 3 so that its position in the vertical and horizontal directions can be adjusted. At the upper part of the base end of the pouring gutter 8, the molten metal supplied from above is placed in the pouring gutter 8.
A chute 16 for smoothly guiding the molten metal into the pouring gutter 8 is provided integrally with the pouring gutter 8.

Reference numeral 17 denotes a regular n-shaped pot, which is placed on the side of the base end of the pouring gutter 8. This square ladle 17 is supported by a pair of support stands 19 installed on the pouring cart 3.
The spout 18 is located at the upper part of the chute 16, and is configured to be tiltable around the spout 18 about a horizontal axis substantially parallel to the axis of the pouring gutter 8. 2
0 is a motor for tilting the regular ladle 17, and a drive gear 21 attached to its output shaft tilts the regular ladle 17.
It meshes with a fan-shaped gear 22 attached to the side of the. By rotating the drive motor 20 at a constant speed, the conformal ladle 17 is tilted at a constant angular velocity, and the conformal ladle 17 is tilted at a constant angular velocity.
l! The molten metal in J17 is configured to be able to supply a fixed amount to the pouring gutter 8. 23 is a stopper that regulates the stopping position of the square ladle 17.

Next, the operation of pouring metal into the rotary metal frame 1 will be explained. The molten metal is stored in the square ladle 17 in advance. First, the pouring cart 3 is advanced to insert the pouring gutter 8 into the rotary metal frame 1, and its tip is positioned at the measured end of the rotary metal frame 1. Next, the coating material is sprayed onto the inner surface of the rotating metal frame 1 from the tip of the pouring gutter 8, and then the pouring truck 3 starts to retreat, and the drive motor 20 is operated to gradually move the square ladle 17. Tilt upward. And from the spout 18 of the square ladle 17 to the chute 16? The molten metal is supplied to a pouring gutter 8 through this chute 16, and is poured into the rotary metal frame 1 from the tip of the pouring gutter 8.

At this time, since the height of the spout 18 of the square ladle f117 is low, the flow rate of the molten metal from the pouring gutter 8 does not become excessive, and the conformal ladle is placed on the side of the pouring gutter. This prevents the occurrence of a situation where a large amount of molten metal flows out at once due to inertia when the molten metal pouring truck 3 starts to move backward and start pouring molten metal, resulting in a molten metal boundary. Furthermore, even if the dry coating casting method is carried out as described above, there is no fear that the sprayed mold coating material will be involved or that the molten metal will flow into areas where the mold coating material is not applied, resulting in defects.

As described above, by moving the pouring cart 3 backward without tilting the regular ladle 17 at a constant angular velocity, the rotary metal frame 1
The molten metal is uniformly poured over the entire inner surface.

When a predetermined amount of molten metal is poured in this way, the square ladle 17 is tilted back until it stops at the stopper 23 and stops at the initial position, and the pouring gutter 8 is pulled out from the rotating metal frame 1. pouring is completed.

Thereafter, the rotary drive device 13 moves the pouring gutter 8 to the chute 1.
6, and the remaining pig iron in the pouring trough 8 is dropped and removed. At this time, the height of the spout 18 is low and the chute 1
6 is small, so even if the chute 16 is configured integrally with the pouring gutter 8, it is possible to rotate the pouring gutter 8 and the chute 16 together without causing any unreasonableness in terms of space or mechanism. As described above, according to the present invention, since the square ladle is provided on the side of the base end of the pouring gutter, it is possible to install the square ladle at a low position. This eliminates the need for a large-scale structure to place the square ladle in a high position, making the overall configuration smaller.Also, since the height of the spout of the square ladle is low, the outflow speed of the molten metal becomes excessive. In addition, there is no risk of a large amount of molten metal flowing out at once when pouring starts, and there is no risk of forming a mold boundary in the dry coating casting method. Pour the chute because the height of the spout of the ladle is low, J! It can be rotated integrally with the gutter and has a compact and simple configuration.

[Brief explanation of drawings]

FIG. 1 is a plan view of a pouring device according to an embodiment of the present invention, and FIG. 2 is a view taken along the line ■-■ in FIG. 1... Rotating metal frame, 3... Pouring cart, 8... Pouring gutter, 16... Sheet, 17... Square ladle, 18...
spout.

Claims (1)

[Claims] 1. Equipped with a pouring gutter whose tip can be inserted into the rotating metal frame and a conformal ladle capable of supplying molten metal to the base end of the pouring gutter, and the conformal ladle is connected to the pouring gutter. A pouring device characterized in that it is disposed to the side of the base end of the pouring device.