JPH05309473A - Continuous casting apparatus for shell mold - Google Patents

Abstract

PURPOSE:To efficiently and continuously execute casting work without manual aid. CONSTITUTION:In a filling line of a shell mold and a backup material, by filling the backup material into surrounding of the shell mold housed in a casting flask through a hopper device 3a, the shell mold is fixed. This shell mold is sent out to at least any two of casting lines 44, 45, 46 through the first carrying devices 42, 50 in order. The casting flask completing the pouring of molten metal into the shell mold in a casting line, is carried to a casting flask turning- over device 60 with the second and third carrying devices 52, 54 through a cooling line 48. The casting flask is turned over with the casting flask turning- over device and the cooled shell mold is discharged from the casting flask into a shake-out device 70 together with the backup material. A product from the shaken-out shell mold with the shake-out device is taken out and carried out with a product carry-out device 74. The backup material is returned back to the hopper device through a backup material circulating conveyor device 80 and stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shell mold continuous casting apparatus for pouring molten metal into a shell mold housed and fixed in a casting box for casting.

[0002]

2. Description of the Related Art A conventional shell mold casting method will be described with reference to FIG. 1. First, an operator puts a scoop or the like on the casting box 10 in an amount corresponding to the size of the shell mold 12. After using the bottom of the casting box, the shell mold 12 is aligned and loaded into the casting box 10, then the backup space 14 is filled in the space around the shell mold 12,
The shell mold 12 is fixed. Then, the casting box 10 on which the shell mold 12 has been mounted is moved to the casting line and waits for the steel output from the melting furnace. After pouring the molten metal into the shell mold 12 and waiting for the product to cool, the product is scraped out of the casting box 10. Then, the operator scoops the casting sand mixed with the backup material 14 from the casting box 10 with a scoop, puts the sand in a container and discards it, and a series of casting operations is completed.

[0003]

As described above, the conventional series of casting operations are carried out manually by the operator, and in addition to requiring manpower, various steel types can be efficiently cast. There were the following problems. That is, when casting various steel types, a predetermined shell mold 12 may be attached to the casting box 10 according to a predetermined order, and the shell mold 12 may be sequentially transferred to the casting line to wait for pouring. However, in reality, the order of tapping is often out of order due to the circumstances of the melting furnace or some trouble, but in such a case, it is necessary to reconstruct the casting box 10 on the pouring line. Upper and lower casting boxes 10 transferred to the casting line
If the casting of No. 1 is not finished, there arises a problem that the casting box 10 that has been cast on the casting line cannot be transferred to the dismantling line.

Further, since the backup material 14 and the casting sand taken out from the casting box 10 are collected in a mixed state, it is difficult to reuse them.
The present invention has been made to solve the above-mentioned various problems, and it is possible to easily deal with a plurality of melting furnaces even if the planned order of tapping is out of order, and it is necessary to put manpower. It is an object of the present invention to provide a shell mold continuous casting device that can efficiently perform casting without any problems, and that automatically separates the sand and the backup material after the casting to reuse them.

[0005]

In order to achieve the above-mentioned object, the shell casting mold continuous casting apparatus of the present invention is provided with a large number of casting boxes for accommodating the shell casting molds and the surroundings of the shell casting molds housed in the casting box. A hopper device for filling the shell with a backup material and fixing the shell mold, and a first transfer device for sequentially sending the casting box to any one of at least two casting lines,
A second transfer device that sends out a casting box that has finished pouring the shell mold in the casting line to the cooling line, and a casting box reversing device that reverses the casting box and discharges the cooled shell mold together with the backup material from the casting box. A third transfer device for transferring the casting box from the cooling line to the casting box reversing device, and a vibration disassembly device for disassembling the shell mold discharged from the casting box and sieving the disassembled shell mold and the backup material. , A product unloading device for taking out and unloading the product from the shell mold disassembled by the vibration dismantling device, a backup material circulating conveyor device for storing the backup material sieved by the vibration dismantling device back to the hopper device, and the casting A fourth transfer device for returning an empty casting box from the box reversing device to the filling line of the shell mold and the backup material. And wherein the door.

Preferably, the backup material is 10
It is preferable to use alumina that has been fired into a pellet shape, a spherical shape, or the like of about 20 mm.

[0007]

In the shell mold continuous casting apparatus of the present invention, the casting box performs these steps from the step of housing and fixing the shell mold in the casting box to the step of pouring, cooling, dismantling, and product removal. It is configured to be automatically transferred and circulated by a transfer device. Further, at least two casting lines are provided, and the casting boxes are sequentially transferred to this line by the first transfer device, while the casting boxes which have finished pouring the shell mold are cooled by the second transfer device. Sent to. Therefore, by arranging a casting box corresponding to the type of steel to be cast on each casting line, it is possible to easily deal with the case where the order of tapping steel in the melting furnace is out of order. The number of casting lines may be increased according to the number of melting furnaces. Further, after casting, the shell mold taken out of the casting box is mostly decomposed into fine sand by firing, and is screened with a backup material by a vibration dismantling device. The screened back-up material is returned to the hopper device by the circulating conveyor device and circulated for use.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. First, the schematic structure of the shell mold continuous casting apparatus of the present invention will be described with reference to FIGS. 2 to 5. A large number of casting boxes 2 used by circulating this continuous casting apparatus.
0, a hopper device 30 for filling the casting box 20 with a backup material, a first transfer device (feeding conveyor 42, carrier device 5) for sending the casting box 20 to the casting lines 44 to 46.
0), a second transfer device (carrier device 5) that sends the casting box 20 that has finished casting in the casting line to the cooling line 48.
2), the casting box 20 is inverted, and the shell mold 12 is cooled.
The casting box reversing device 60 for discharging the casting box 20 together with the backup material 24 from the casting box 20, the third transfer device (carrier device 54) for transferring the casting box 20 to the casting box reversing device 60 from the cooling line 48, and disassembling the shell mold 12. A vibration dismantling device 70 that sifts the dismantled shell mold and the backup material together, a product unloading device 74 that takes out the product from the dismantled shell mold 12 and carries it out, and a backup material that is sifted by the vibration dismantling device 70 is returned to the hopper device 30. Backup material circulating conveyor device 8 to be stored there
0, a casting sand recovery device 90, and a fourth transfer device (carrier device 54, conveyor 41) for returning the empty casting box 20 to the shell mold and backup material filling line from the casting box reversing device 60.

In the continuous casting apparatus of this embodiment, the shell mold and the backup material filling line, the casting line, and the cooling line are arranged in parallel, and the above-mentioned lines and the first to fourth transfer devices and The casting box reversing device 60 is added so that the line is formed into a loop. Further, in this embodiment, the first pouring line 44, the second pouring line 45, and the third pouring line 46 from the filling line side,
Three lines of the same length are arranged in parallel, and each casting line can be used corresponding to the type of steel to be cast. For example, the casting line 44 is used for casting stainless steel products, the casting line 45 is used for casting heat-resistant steel products, and the casting line 46 is used for casting ordinary steel products. do it. However, it goes without saying that it is not necessary to specifically limit which product type of product is to be cast in which casting line, but the casting box 20 may be used to cast products of the same steel type into one casting line. It is better to line up.

Further, in the continuous casting apparatus of this embodiment, the filling line, the casting box reversing device 60, the vibration dismantling device 70, and the product unloading device 74 are arranged on the same line, and the cooling line 4 is used.
8 and the first casting line 44 are arranged on the same line. A standby line 42 is provided on the extension line of the filling line.
Is provided. Next, each of the above-mentioned components of the device of the present invention will be described more specifically according to the casting operation procedure.

In the shell mold continuous casting apparatus of the present invention, for example, 50 casting boxes 20 are circulated, and the shape of each casting box 20 is basically different from the conventional casting box 10 shown in FIG. However, as will be described later, in the device of the present invention, in order to vibrate with a shaker or to invert with a casting box reversing device,
A flange (not shown) for engaging a shaker or a dismantling device is attached. Further, each casting box 20 is provided with wheels, and can move along rails laid on the floor surface (set to the ground level GL).
For convenience of explanation, reference numerals (# 1 to # 50) for identifying each casting box 20 are attached to the side wall of the casting box 20.

A pitch feed conveyor 41 and a control board 41a are provided in the shell mold and the backup material filling line.
Are provided, which form part of the construction of the fourth transfer device 41. The conveyor 41 is an endless chain having dogs attached at predetermined intervals, and is driven by a motor (not shown). The dog is locked to a locking piece attached to the bottom surface of the casting box 20, and the empty casting box 20 returned from the casting box reversing device 60 via the carrier car 55 is moved in the direction of the arrow in the drawing as described later. It is sequentially transferred to a pre-bag filling position, a shell mold loading position, a main back filling position, and a vibrating position at a predetermined speed. The transfer speed of the conveyor 41 can be appropriately set by the control panel 41a.

The hopper device 30 comprises a pre-back hopper 3.
1, a main back hopper 32, a vibrator 33, and the like. The pre-back hopper 31 and the main back hopper 32 are arranged above the filling line, and both the hoppers 31 and 32 store the backup material 24,
As will be described later, a required amount of backup material 24 is cut out and filled in the casting box 20.

The backup material (see FIG. 6) 24 is made of alumina, which is the same component as the sand used for molding the shell mold 12, and is fired into pellets or spheres having a size of about 10 to 20 mm. It is preferably used.
The pre-back hopper 31 is horizontally arranged so as to contact the lower end of the hopper main body 31a and the hopper main body 31a, and a conveyor 31b for cutting out a required amount of backup material, and a backup material (pre-back) 24 cut out by the conveyor 31b. Swing hopper 31 to be thrown into a casting box (# 19)
c, a backup material control panel 31d, etc. Data on the size and shape of the shell mold 12 accommodated in the casting box 20 is installed in the control board 31d, and the filling amount of the backup material 24 to be put into the casting box 20 is preset according to the shell mold information. Is remembered. Therefore, when the worker puts the data of the shell mold 12 to be stored in the sent casting box (# 19) into the operation panel 31d, the conveyor 31b is moved at the time when the casting box (# 19) moves to the pre-filling position. Is operated for a predetermined time, and a required amount of backup material 24 is cut out from the hopper body 31a and put into the casting box (# 19). At this time, since the swing hopper 31c is driven by the motor and the lower end thereof swings in the moving direction of the conveyor 41, the backup material 24 is flatly filled to the bottom of the casting box (# 19) to the required depth. (See FIG. 6). The arrow B shown in FIG. 3 and the like indicates the flow direction of the backup material 24.

The casting box thus filled with the pre-back 24 is moved to the shell mold loading position by the conveyor 41. At the shell mold loading position, the operator loads the shell mold 12 into the casting box (# 18). In this case, the robot may automatically load the shell mold. Since the casting box (# 18) is pre-filled with the pre-bag 24 to a required depth, the sprue of the shell mold 12 to be charged is located at a preferable height. At this shell mold loading position, the operator must move the casting box (# 18)
While the shell mold 12 is charged into, the tag for designating the casting line is set according to the loaded shell mold 12, that is, according to the type of steel to be cast. Various methods can be considered as a method for setting the tag. For example, a bar is inserted at a position corresponding to the pouring line to be transferred on the upper part of the front wall of the casting box 20, and the bar is detected by a sensor. Thus, the transfer destination line can be detected.

Next, the casting box is moved to the main back filling position, and the backup material (main back) 24 is filled by the main back hopper 32 around the loaded shell mold 12. Like the pre-back hopper 31, the main back hopper 32 is horizontally arranged so as to contact the lower end of the hopper body 32a and the hopper body 32a, and is cut out by the conveyor 32b and the conveyor 32b for cutting out a required amount of backup material. It comprises a swing hopper 32c into which a backup material (pre-back) 24 is charged, a backup material control panel 32d, a level sensor 32e, and the like. The control panel 32d is also filled with data on the size and shape of the shell mold 12 housed in the casting box 20,
The filling amount of the backup material 24 to be charged into the casting box 20 is stored in advance in accordance with the shell mold information. Therefore,
Shell mold 1 in which an operator is housed in a casting box (# 17)
When the operation panel 32d is operated according to 2, the casting box (# 17)
When the conveyor moves to the main back filling position, the conveyor 32
b operates for a predetermined time, and the required amount of backup material 24
Is cut out from the hopper body 32a and put into a casting box (# 17). At this time, since the swing hopper 32c is driven by the motor and the lower end thereof swings in the moving direction of the conveyor 41, the required amount of the backup material 24 is uniformly filled around the shell mold 12, and the casting box (# 17 ) Will be filled with the backup material.

When the main back 24 is filled, the casting box is moved to the vibration position. Exciter 33 arranged at the exciting position
Is composed of a shaker main body 33a and a shaker control panel 33b. This vibrator 33 is a casting box (# 1
6) is lifted upward from the conveyor 41, and in a floating state, the casting box (# 16) is subjected to vertical, front-rear, and left-right vibrations. Therefore, the noise is low and the vibration time is short,
The backup material 24 spreads to every corner of the shell mold 12, and the shell mold 12 is securely fixed to the casting box (# 16). The strength of vibration, amplitude, vibration time, etc. applied to the casting box (# 16) can be set in advance by the control panel 33b.

In this way, the casting box (# 15) filled with the shell mold 12 and the backup material 24 is delivered from the conveyor 41 to the supply conveyor 42. Supply conveyor 42
Constitutes a first transfer device together with the carrier device 50 described later. The supply conveyor 42 is a standby line for sending the casting boxes (# 14 to # 8) loaded with the shell mold 12 to the respective casting lines 44 to 46. The supply conveyor 42 also has a dog attached to a predetermined position of the endless chain, and the casting boxes fed into the conveyor 42 are arranged in order from the leading position and made to stand by at that position. The casting boxes (# 14 to # 8) waiting on this waiting line are
As described above, when the shell mold 12 is loaded, the casting line to be automatically carried in is already waited.

The carrier device 50 is a carrier car 51 that mounts the casting box 20 and transfers the casting box 20 to a required casting line position, and the delivery of the casting line according to the destination of the casting box 20 in which the carrier car 51 is mounted. It is composed of a drive device 50a for moving it to a position, a control panel 50b for controlling the operation of a conveyor 51a of the carrier car 51, which will be described later, and the like.

A pusher device 51a for picking up the casting box 20 fed from the supply conveyor 42 to the carrier car 51 and feeding the casting box 20 to the casting line at the delivery position of the casting line, and this pusher device 5
A motor (not shown) for driving 1a, and a casting box 20
A tag detection device (not shown) for detecting the tag set in the. The carrier car 51 extends from the delivery position of the supply conveyor 42 to the delivery position to the third casting line 46 along a rail laid at a position where the height of the casting box 20 can be transferred at the same level without fluctuation. It is possible to move between. The upper surface of the carrier car 51 substantially matches the ground level so that the casting box 20 delivered from the supply conveyor 42 can be transferred without steps.

The driving device 50a includes the destination information of the casting box 20 detected by the above-mentioned tag detecting device and the control panel 5 described later.
The carrier car 51 is moved to the intended delivery position by the availability information of the casting line from 2b, and the pusher device 51 is moved.
The casting box 20 in which a is operated and mounted is a casting line,
For example, it is delivered to the line 44. Pouring line 44-46
Are configured in the same manner as the above-mentioned supply conveyor 42, and are cast from the carrier car 51 (# 1 to #
7, # 37- # 43, # 44- # 50)
It is picked up by a (45a, 46a), arranged in order from the beginning and made to stand by.

In the pouring lines 44 to 46, after the molten metal is discharged from a melting furnace (not shown), the molten metal is sequentially poured into the waiting casting boxes (eg, # 1 to # 7). This pouring work is
The pouring method may be direct pouring from a ladle or pouring from a trolley-type or mechanical pouring machine as is conventionally done, and the pouring method is not particularly limited. After the pouring, the casting box 20 is automatically delivered to the cooling line 48 by the carrier device 52 which is the second transfer device. The carrier device 52, like the carrier device 50 of the first transfer device, includes a carrier car 53, a drive device 52a, and a control panel 52b.
Etc. The carrier car 53 is provided with a pusher device 53a similar to the carrier car 51 described above, and a casting box (# 3
The delivery of 6) is performed in the same manner as the carrier car 51, as shown in FIGS. 6 and 7.

Thus, the three casting lines 44-4
Since 6 is provided, even if the casting operation is not completed for all the casting boxes 20 on the casting line, it can be sent out from the casting box 20 of the line after the casting to the cooling line 48, and the casting line is not always required. It is not necessary to perform the casting in the order in which the casting box 20 is fed into, and it is sufficient to perform the casting in the order of tapping steel in the melting furnace.

The cooling line 48 is a line for cooling the shell mold 12 that has been cast. This cooling line 4
8 also comprises a conveyor 48a having a dog attached to a predetermined position of the endless chain, the casting boxes (# 24 to # 35) fed to the conveyor 48a are sequentially aligned from the leading position, and the shell mold is waited at that position. Allow 12 to cool.
The cooled casting box (# 23) is transferred to the casting box reversing device 60 via the carrier device 54 as the third transfer device. Carrier device 54, carrier car 55 that carries casting box 20 and transfers it to the delivery position of casting box reversing device 60, drive device 54a that moves this carrier car 55 to the delivery position described above, drive device 54a and carrier The car 55 includes a control panel 54b for controlling the operation of pusher devices 55a and 55b described later. The carrier car 55 is provided with two sets of pusher devices, that is, a pusher device 55a on the cooling line side and a pusher device 55b on the conveyor 41 side, and is configured so that two casting boxes 20 can be mounted in parallel. There is.

On the other hand, the casting box reversing device 60 lifts the conveyor 61 for picking up the casting box from the carrier device 54 and the vibrating dismantling device 70, which will be described later, and inverts the casting box there for contents. It is composed of a lifter 62 which is discharged by. The lifter 62 is a conveyor 61.
The hanging device 62a that holds and hangs the casting box 20 that has been drawn in by the guide rail 62 that guides the hanging device 62a to above the vibration disassembling device 70 and reverses the casting box.
b, a drive motor 62c for raising and lowering the suspension device 62a along the guide rail 62b.

When the carrier car 55 transfers the cast box (# 23) to the cast box reversing device 60, the pusher device 55a on the cooling line side of the carrier car 55 pulls the cast box (# 23) from the cooling line 48, The pusher device 55b on the conveyor 41 side is left empty. The control board 54b has a drive box 54a after the cast box (# 23) is mounted on the carrier car 55.
Is operated to move the carrier car 55 to the delivery position of the casting box inverting device 60. At this time, the carrier car 55
Stands by stopping the empty pusher device 55b at a position aligned in a line on the extension line of the conveyor 61 and the conveyor 41 of the casting box inverting device 60. Next, the control board 54b actuates the conveyor 62c of the casting box reversing device 60, pulls out the casting box (# 22) that has returned to the empty state, and the carrier car 5
5 to the pusher device 55b.

The pusher device 55b of the carrier car 55
Takes the casting box (# 22) and delivers it to the conveyor 41. When the delivery of the empty casting box is completed in this way,
The carrier car 55 moves forward from the stop position and moves to the casting box (# 2
The pusher device 55a on which 3) is mounted moves to a position where they are lined up in a line on the extension line of the conveyor 61 and the conveyor 41 of the casting box reversing device 60, and then stops. Then, the control panel 54b
Activates the pusher device 55a and the conveyor 61, pushes the mounted casting box (# 23) to the conveyor 61 side, and delivers it. The conveyor 61 feeds the cast box (# 22) that has been taken into the suspension device 62a, and causes it to grip the cast box (# 22). Then, the drive motor 62c
When the suspension device 62a is activated, the suspension device 62a is suspended along the guide rail 62b. When the suspension device 62a is suspended to the uppermost portion, the casting box (# 22) is gently tilted, and the shell mold 12 which is the contents (filling material) of the suspension device 62a. The backup material 24 is dropped on the vibration dismantling device 70. Then, when the drive motor 62c is reversed, the suspension device 62c descends along the guide rail 62c, and the casting box (# 22) is returned to the original position.

The carrier car 55 having delivered the casting box (# 23) returns to the delivery position of the cooling line 48 with the next casting box taken over. Two pusher devices 55 on the carrier car 55
Since a and 55b are provided, the carrier car 55 picks up the next casting box while the casting box reversing device 60 lifts the casting box and discharges the contents of the casting box.
You can return to the delivery position.

The vibration dismantling device 70 separates and disassembles the dismantled product or a large-sized shell mold piece (casting slag) from the casting sand and the backup material 24, and the casting sand and the backup material 24 are separated.
The first sieving device 71 for dropping only the second sieving device 71, the second sieving device 73 for sieving the casting sand and the backup material 24, and the first sieving device 71 are integrally attached.
Second, the sand and the back-up material 24 that have been screened by
Guide duct 72 guiding the sieving device 73, and a vibrator 7 for vibrating the first and second sieving devices 71, 73.
1a and the like.

The shell mold 12 dropped from the casting box reversing device 60 to the vibration dismantling device 70 is dismantled by the dropped shock, and at the same time, vibration of the vibrator 71a causes the product and casting sand generated by firing of the shell mold 12 to be removed. Shell mold pieces,
It is decomposed into cold gold, a sprue embedded in the shell mold 12, a backup material 24, and the like. As described above, the backup material 24 has a size of about 10 to 20 mm,
Since the casting sand is smaller than the backup material 24 and is decomposed into pieces, the casting sand and the backup material 24 are sieved by the first sieving apparatus 71, and the second sieving apparatus 73 is passed through the guide duct 72. Be led to. Cast sand and backup material 2 guided to the second sieving device 73
No. 4 is further sifted due to the difference in particle size, and the casting sand (the flow of the casting sand is shown by an arrow C in the figure) drops onto a conveyor 91 of a casting sand recovery device 90 described later, and a backup material (a backup material in the figure). (The flow of 24 is indicated by arrow B) 24 falls on the conveyor 81a of the backup material circulating conveyor device 80 described later. On the other hand, the large lump product, the middle sized shell mold piece, and the like separated by the first sieving device 71 are sent to the product unloading device 74.

The product unloading device 74 is a sieving device (so-called "Sana") for sieving the product from a shell mold piece of a medium mass and foreign matters, for example, cold gold and a sprue embedded in the shell mold. Device 74a, a miscellaneous material container 74b for accommodating a medium-sized miscellaneous material that has been screened by the device 74a, a conveying roller 74c for discharging the miscellaneous material container 74b, and a product screened by the sieving device 74a. It is composed of a product container 74d and the like.

The large-sized products and medium-sized shell mold pieces sent to the product unloading device 74 are sieved by the sieving device 74a, and the foreign matters are separated and dropped into the foreign matter container 74b. The arrow D shown in the figure indicates the flow of foreign matters, and the arrow A indicates the flow of products. The shell mold pieces collected in the miscellaneous material container 74b are crushed and reused as casting sand, and cold gold and the sprue are also sent to the shell mold molding step and used again. On the other hand, the large product is collected in the product container 74d and carried out.

The casting sand recovery apparatus 90 is the conveyor 9 described above.
1, start-up bucket conveyor 92, sand conveyor 9
3, 94, hopper device 95, and conveyors 91-
It is composed of a sand recovery operation panel 96 and the like for controlling the operation of 94 on and off. The casting sand falling from the sieving device 73 of the vibration dismantling device 70 is received by the conveyor 91,
It is pulled up to the input port of the start-up bucket conveyor 92,
From there, it is charged into the bottom of the conveyor 92. Conveyor 9
The casting sand charged in No. 2 is scooped up in a bucket (not shown) of the bucket conveyor 92, transferred to the tower top conveyor 93, and further collected by the conveyor 94 in the hopper device 95. The casting sand collected in the hopper device 95 is transported to a molding device (not shown) for reuse.

The backup material circulating conveyor device 80 is
1st-4th conveyor 8 which conveys the backup material 24
1a to 81d, a shooter 81e, a rising bucket conveyor 81f, and the like. The operation control of the conveyor device 80 is carried out by the control board 32d of the hopper device 30, and the conveyor device 80 is operated by turning on an operation switch provided in the control board 32d. Vibration dismantling device 7
The backup material 24 sieved by the No. 0 sieving device 73 is pulled up to the inlet of the shooter 81e through the first to third conveyors 81a to 81c in the order shown by the arrow B, and from here, the start-up bucket conveyor 81.
It is dropped on the bottom of the tower of f. And the bucket conveyor 81
It is moved to the fourth conveyor 81d by a bucket (not shown) of f. The fourth conveyor 81d is bridged between the preback hopper 31 and the main back hopper 32,
It is selectively operable towards both hoppers 31,32. The control board 32d monitors the amount of backup material stored in the hopper by means of a level sensor 32e attached to the main back hopper 32.
If the storage amount of the backup material 24 of No. 2 does not reach the predetermined amount, the fourth conveyor 81d is moved to the main back hopper 3
The backup material 24 transferred to the conveyor 81d is charged into the main back hopper 32 and stored therein. Then, when the backup material 24 reaches a predetermined amount by the sensor 32e, the conveyor 81d is reversed and the backup material 24 is moved to the pre-back hopper 31.
Then, it is filled in the hopper and stored. That is, the filling of the backup material 24 is performed by giving priority to the main back hopper 32.

Thus, the casting box 20 and the backup material 2
Since 4 is constructed in a line that can be recycled and the transportation of these is automatically controlled, it is possible to carry out the casting operation continuously without human labor. In addition, since the backup material 24 obtained by firing alumina is constantly circulated and used, it is hardly consumed, and it is not necessary to manually collect the backup material just by supplementing the consumed backup material.

In the casting apparatus of the above embodiment, 50
Although the casting box 20 of the stand was circulated, the lengths of the casting lines 44 to 46, the supply line 42, the cooling line 48, etc., and the number of the casting boxes 20 may be appropriately changed according to the scale of casting operation, steel type, and the like. Good. Further, in the above-mentioned embodiment, the casting box 20 was made to stand by in the supply line 42, but the operation of filling the casting box with the shell mold and the backup material without keeping the stock of the casting box 20 in the supply line 42. If you want to change the pouring sequence urgently when you finish the operation, you can urgently perform the necessary filling work into the casting box and immediately move this casting box to the required casting line. Can be sent. Furthermore, as a modification, on the extension of the supply line 42,
Another evacuation line may be provided. By providing this evacuation line, for example, when it is urgent to change the casting order, the evacuation box waiting on the supply line 42 is evacuated to the evacuation line via the carrier car 51, and the urgent preparation box is prepared. Can be preferentially added to the required casting line.

[0037]

As is apparent from the above description, according to the configuration of the shell mold continuous casting apparatus of the present invention, a casting box is filled with a shell mold and a backup material, a filling line, a casting line, and a cooling line. , And the casting box reversing device automatically circulates a series of pouring processes, so that the pouring work can be continuously performed extremely efficiently without human labor, and the pouring work is completed. The casting box is separated by the vibration dismantling device into products, casting chips, sand, backup material, etc., and the backup material is automatically circulated and used by the backup material circulating conveyor device, so there is no waste of backup material. Also in this respect, the pouring work can be performed efficiently. Further, since at least two pouring lines are provided, it is possible to quickly respond to the tapping conditions even when the tapping plan of the melting furnace is out of order.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a casting box showing a state in which the casting box loaded in the casting box is filled with a backup material and fixed.

FIG. 2 is a block diagram showing a layout of a shell mold continuous casting apparatus of the present invention.

FIG. 3 is a perspective view showing details of a shell mold and a backup material filling line and a cooling line in the layout shown in FIG. 2;

FIG. 4 is a perspective view showing details of a standby line and a pouring line in the layout shown in FIG.

FIG. 5 is a view of the casting box reversing device 6 in the layout shown in FIG.
0 is a perspective view showing details of a vibration dismantling device 70, a product unloading device 74, and the like.

FIG. 6 is a conceptual diagram showing a state of a filling operation in a shell mold and a backup material filling line shown in FIG.

FIG. 7: The casting box is transferred from the carrier car 51 shown in FIG. 4 to the casting line, and further the carrier car 53 is fed from the casting line.
It is a conceptual diagram which shows a mode that it is transferred to.

8 is a conceptual diagram showing how the cooling line shown in FIG. 3 is delivered to a casting box reversing device via a carrier car 55. FIG.

[Explanation of symbols]

 12 Shell Mold 20 Casting Box 24 Backup Material 30 Hopper Device 33 Shaking Machine 41 Conveyor (4th Transfer Device) 42 Supply Conveyor (1st Transfer Device) 44 Casting Line 45 Casting Line 46 Casting Line 50 Carrier Device (First transfer device) 52 Carrier device (second transfer device) 54 Carrier device (third transfer device) 60 Cast box reversing device 70 Vibration dismantling device 74 Product unloading device 80 Backup material circulation conveyor device 90 Cast sand recovery apparatus

Claims (1)

[Claims] 1. A plurality of casting boxes for accommodating the shell molds, a hopper device for fixing the shell molds by filling a backup material around the shell molds accommodated in the casting box, and at least two of the casting boxes. The first transfer device for sequentially sending to one of the two casting lines, the second transfer device for sending out the casting box that has finished pouring the shell mold in the casting line to the cooling line, and the casting box was inverted and cooled. A casting box reversing device for discharging the shell mold together with the backup material from the casting box, a third transfer device for transferring the casting box from the cooling line to the casting box reversing device, and disassembling the shell mold discharged from the casting box A vibration dismantling device for sieving the disassembled shell mold and a backup material, a product unloading device for taking out a product from the shell mold disassembled by the vibration dismantling device, and carrying out the vibration dismantling. A backup material circulation conveyor device for returning the backup material screened by the device to the hopper device for storage, and a fourth transfer for returning an empty casting box from the casting box reversing device to the shell mold and backup material filling line. An apparatus for continuously casting shell molds, comprising: