JPS5994562A - Centrifugal casting device - Google Patents

Abstract

PURPOSE:To adjust smoothly the inclination of a rotary metal flask, which is inserted with a charging trough upon traveling of a carriage on a downgrade path in the direction of the trough, with a driving device having a relatively small capacity by making one end of said metal flask movable upward and downward with the other end thereof as a fulcrum. CONSTITUTION:A bed 3 which is supported at right and left ends by the bracket 22 and cylinder device 23 of an inclination adjusting device 21 is positioned level, and a rotary metal flask 2 is carried thereon. A core is inserted in the metal flask. The device 23 is operated to incline the flask 2 in conformity with the inclination of a charging trough 10 and a charging carriage 8 on a rail 6 is run to insert the trough 10 into the flash 2. The flask 2 is then rotated at a high speed and the molten metal running in the trough 10 is supplied from the left to right side by the movement of the carriage 8, whereby a pipe 14 is centrifugally cast. The flask 2 is returned again to the horizontal position on nearing the end period of the charging so that the axial centers of the flask 2 and an extraction device 13 are made coincident in a horizontal direction, then the core and the pipe 14 are extracted successively.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a centrifugal casting apparatus for casting pipes, etc.
Ru.

When performing centrifugal casting using a rotating metal frame, it is necessary to improve the flow of the molten metal during pouring, and to prevent uneven thickness by moving the molten metal in the axial direction after pouring. It is customary to make the rotating metal frame slightly inclined in the axial direction 11. On the other hand, when removing the molded product from the rotating metal frame after casting, it is desirable to remove the molded product in a horizontal direction to prevent deformation of the molded product.

Therefore, conventionally, a pouring device having a downwardly inclined pouring trough is fixedly provided, and a rotary metal frame is provided on a cart that runs on a slope road matching the slope of the pouring trough, and a rotary metal frame is installed on the downhill side of the slope road. There are some cases in which the end portion is formed with a steep slope.

That is, the metal is poured into a rotary metal frame that is tilted on a slope road, one end of the cart after pouring the metal is placed on the upward slope to bring the rotary metal frame into a horizontal position, and the molded product is extracted in this state. It is. However, with such conventional systems, there is a risk that an impact force will be applied to the cart when it runs over, which may have a negative effect on the molded product.Also, since the same rotating metal frame plowing cart, which is very seriously affected, is run on a slope, There is a problem in that the traveling drive device is required to be large in size.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to smoothly adjust the inclination of a rotary metal frame, and to enable the inclination adjustment to be performed using a relatively small-capacity drive device.

In order to achieve this object, the present invention provides a pouring cart which has a pouring trough and is capable of traveling on a downward slope in the direction of the pouring trough, and a pouring cart which can travel on a downward slope in the direction of the pouring trough. A rotary metal frame to be inserted and a extraction device for horizontally extracting the molded product after centrifugal casting from the rotary metal frame are provided, and the other end is raised and lowered using one end of the rotary metal frame as a fulcrum,
The rotary metal frame is provided with an inclination adjustment device that tilts the rotary metal frame in accordance with the pouring trough during pouring, and horizontally adjusts the rotary metal frame in accordance with the extraction device when removing metal from the end of pouring.

Therefore, the inclination of the rotary metal frame can be adjusted simply by raising or lowering one end of the rotary metal frame, so smooth operation can be expected. Moreover, by running only a relatively lightweight pouring cart, it is possible to Since there is no need to run a heavy-duty dolly with a metal frame along a slope, the inclination can be adjusted using a smaller drive device than in the past.

Hereinafter, one embodiment of the present invention will be described based on one aspect.

In Figures 1 and 2, (1) is a bit with a slope, and at its deepest part is a bed (3) on which a rotating metal frame (2) 't□ is placed for full centrifugal casting of cast iron pipes. It is located. (4) is the insertion side of the rotating metal frame (2), while (5)
is on the receiving side.

Inside the bit (1), a traveling rail (6) is laid as a downward slope road that matches the slope of this bit (1), and the cylinder device (7) is driven to travel on the traveling rail (6). A pouring truck (8) is provided on which the molten metal is stored.A ladle (9) for storing molten metal and a ladle (9) that is placed on the rotating metal frame (2) side of the pouring truck (8) are provided. Push-in side for traveling (4
) is inserted into the rotating metal frame (2) and pours the molten metal from the ladle (9) into the rotating metal frame (2).
0 is attached. On the other hand (b) is bit (1)
It is a conveyor device installed inside the trough that receives the residue that falls from the pouring trough QO and sends this residue through a chute (6).
It is something that is discharged inward.

(to) is a extraction device that extracts the cast iron pipe 041 as a molded product from the socket side (5) of the rotary metal frame (2). This extraction device (to) runs by itself on a running rail (to) laid horizontally on the floor facing the socket side (5) and a claw αQ that chucks the inner surface of the socket of the α-gradient cast iron pipe. Rail (G)
It consists of a tube pulling truck αη that travels above and a pulling truck driving device (to).

On the side of the extraction device (6), there is a conveyor 01 that conveys the cast iron pipe (b) extracted from the rotating metal frame (2) by the extraction device (2) in a horizontal direction perpendicular to the axis. , a tube heat treatment furnace gradient is provided.

Details around the bed (3) will be explained. As shown in FIGS. 1 to 6, the bed (3) is supported on the bit (1) by an inclination adjustment device Q. This tilt adjustment device Q
ρ is a bracket (c) that supports the end of the bed (3) on the casting cart (8) side, and a cylinder assembly that supports the end of the bed (3) on the extraction device (2) side! It is composed of @ and. Therefore, the socket side (5) of the bed (3) swings up and down using the bracket (A) position as a fulcrum by the expansion and contraction of the cylinder device (2), thereby adjusting the inclination to the desired one.

On the bed (3), (c) is a pair of roller units provided in the axial direction of the rotary metal frame (2), as shown in Figs.
As shown in FIG.
) and are respectively built-in. @ is a drive device that drives the roller (2) to rotate the rotating metal frame (2),
a drive shaft that receives power from the motor (2) through the gears of a gear box (4);
A slide coupling 09 connects the drive shaft and the roller (2).

(2) is a bearing. Further, (to) is a pair of water cooling jackets for cooling the rotating metal frame (2).

(b) is a medium for forming the inner surface of the socket of cast iron pipe Q4.
(5) A core setter for inserting the child into the socket of the rotary metal frame (2). This core setter is configured to be able to run on a rail on the top surface of the bed (3), and the core mounting portion (to) can be rotated around the horizontal axis (2). Therefore, when extracting the cast iron pipe α- from the rotary metal frame (2) by operating the extraction device (2), the core setter is inserted from the socket side (5) as shown in the imaginary line in Fig. 5. It is possible to separate the parts and flip up the core mounting part so that it does not interfere with the extraction work.

A rotary metal frame conveying device (to) is provided intersecting the bed (3) in a horizontal direction perpendicular to the bed (3).
=ru. In other words, the trout has a bed (3) and a rotating metal frame (2).
a pair of elevating and lowering members extending to a position outside the bed (3) on both sides in the horizontal direction perpendicular to the rotating metal frame (2), and -
A frame body (B) is formed together with the cut beam material (G). As shown in FIG. 8, lift devices (6) for the frame (b) are provided at the four corners of the frame (b). In this way, the parts of the lifting member at both outer positions of the bed (3) are set up at the set-up positions ←9 and 9 of the rotary metal frame (2), respectively.

2) are a pair of transport blocks that are connected to each other by cables (b) and run on the elevating member (to), and are set up at the set-up position (■) and the bed (3) position, or between the bed (3) position and the set-up position. ). (
wealth) is a sheep. The upper surface of the conveyor block is shaped like a 7-shaped valley, which supports the rotary metal frame (2) on the bed (3) as the elevating member (to) rises, and also supports the rotating metal frame (2) on the bed (3) as the elevating member (to) rises. A rotating metal frame (2) is passed over the C bed (3) as it descends.

In this way, the transport block So1 supports the rotating metal frame (2), and by moving the rotating metal frame (to this transport block), the rotating metal frame (2) is moved.
2) is transported between the set-up position (C) and the bed (3) position. Here, in the transport block)
An appropriate roller may be placed at the part that contacts the rotating metal frame (2).

As mentioned above, the drive shaft (C) and the roller unit (C) are removably connected by the slide coupling (6), and the rotating metal frame (2) is attached to the conveyor block (6).
), the roller unit and water cooling jacket can be transported together.

Explain the casting work. Operate the cylinder device so that the bed (3) is in a horizontal state, and receive the rotary metal frame (2) carried into the set-up position @ transport the lifting member (
Pass it on the bed (3) by descending (to). Next, connect the drive shaft (to) and roller unit (c) using the slide coupling 0η, and use the core setter ■ to connect the socket 11! Insert the core into I(5).

(on the cylinder device), tilt the rotary metal frame (2) according to the inclination of the pouring trough (LO), and then tilt the pouring cart (
8) to insert the pouring trough (6) into the rotating metal frame (2). Operate the motor (to) and rotate the metal frame (2)
is rotated at high speed to flow the molten metal from the ladle (9) into the pouring trough, and by moving the pouring cart (8), the molten metal is supplied from the socket side (5) to the socket side (4). Then, tube 04 is centrifugally cast.

At this time, when the rotating metal frame (2) is in an inclined state, the pouring trough (10) can be smoothly inserted and removed, and the molten metal after pouring can be stretched well in the axial direction. When the end of pouring approaches, return the rotating metal frame (2) to the horizontal position again to prevent uneven thickness of the pipe O4). The axes of the metal frame (2) and the extraction device shaft are aligned in the horizontal direction.

When the pouring is finished and the tube (141) has been formed, remove the core setter (B), remove the core, and flip off the core mounting part (to) as shown in the imaginary line in Figure 5. Next, the pipe drawing cart (b) is brought close to the rotating metal frame (2), the inner surface of the socket of the pipe σ◆ is chucked by the claw αQ, and the pipe drawing cart trunk is moved to remove the rotating metal frame from the horizontal state. Take out the tube (b) from (2).At this time, remove the tube (14) based on centrifugal casting.
The pipe Q4 is removed while being rotated by the extracting device (2) without stopping the rotation of the tube Q4, thereby preventing its deformation.

After extraction, the pipe Q4 is transferred to the pipe heat treatment furnace f by the conveyor a.
After being sent to the factory and subjected to heat treatment, it is transported to the next factory.

After the pipe has been removed, the rotating metal frame (2) is supported by one of the transport blocks by the lifting of the elevating member (2), and is moved to the set-up position (2).
or (c), then taken out and readjusted for next use. By the way, this one transport block (
Before transporting the rotary metal frame (2) after the casting process by the rotary metal frame (2) after the casting process, the next rotary metal frame (2) is carried into the other transport block. ) to the bed (
It is designed so that the next rotating metal frame (2) can be set on the bed (3) at the same time as removing it from the rotating metal frame (3).

As described above, according to the present invention, the inclination and inclination of the rotary metal frame can be adjusted by simply raising and lowering one end of the rotary metal frame, so smooth operation can be expected, and the pouring process is relatively mild. Since it is not necessary to run only the truck and run a large, heavy, and sudden truck with a rotating metal frame along the slope road, the inclination can be adjusted using a drive device with a smaller capacity than in the past.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 8 is a side view of the elevating member, Fig. 4 is a plan view of the area around the bed, and Fig. 5 is its front view. The front view and FIG. 6 are cross-sectional views of the roller unit section. (2)...Rotating metal frame, (6)...Traveling rail, (downhill slope road), (8)...Pouring truck, QG...Pouring trough, (To)...Extraction Device, (2)...Inclination adjustment device. Agent Yoshihiro Morimoto

Claims (1)

[Claims] 1. A pouring truck having a pouring trough and capable of traveling on a downward slope in the direction of the pouring tosif; a rotating metal frame into which the pouring trough is inserted as the pouring truck runs;
A extraction device is provided to horizontally extract the molded product after centrifugal casting from the rotating metal frame, and the rotating metal frame is moved up and down using one end of the rotating metal frame as a fulcrum and the other end is raised and lowered to match the pouring trough during pouring. A centrifugal casting apparatus characterized in that it is provided with an inclination adjustment device that tilts the rotating metal frame and makes the rotating metal frame horizontal in accordance with the extracting device from the end of pouring to the time of extraction.