JPH11123534A - Automatic molten metal pouring machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily execute the molten metal receiving work into a ladle from a holding furnace set at the far position in a simple constitution and to efficiently execute the molten metal pouring work into a mold. SOLUTION: This automatic molten metal pouring machine is constituted so as to be automatically pour the molten metal in the ladle 1 into the mold by tilting the ladle 1. In such a case, a carrying mechanism for carrying the ladle 1, a tilting mechanism 3 set at the molten metal pouring position to the mold, a delivery means 4 for delivering onto the tilting mechanism 3 by descending the ladle 1 carried to the molten metal pouring position with the carrying mechanism and an introducing means composed of a part 11 to be engaged and an engaging part 12 for positioning by introducing the ladle 1 when delivering the ladle 1 onto the tilting mechanism 3 with the delivering means 4, are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic pouring machine for automatically pouring a molten metal into a mold.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Patent Application Laid-Open No. 5-329622, for example, a large number of molds are tilted on a lower frame movable along a mold line for sending out the molds at predetermined intervals. In a pouring apparatus provided with a ladle capable of pouring a pouring gate, a detecting means for detecting the feeding of the mold is provided in the mold line, and the lower frame is synchronized with the feeding of the mold by a signal from the detecting means. A moving mechanism for moving the ladle is provided on the lower frame, and the lower frame is provided with a middle frame for reciprocating the ladle from the pouring position to the hot water receiving position, and the middle frame can be moved up and down via a lifting mechanism. There is known a pouring apparatus in which an upper frame is provided and a tilting device driven by an electric motor for tilting the ladle is provided on the upper frame.

[0003]

The pouring device described in the above-mentioned publication reciprocates a ladle along a middle frame installed in a direction perpendicular to the direction of transport of the mold.
Since it is configured to be moved from the pouring position to the pouring position, if a plurality of pouring devices are arranged along the mold conveying line, pouring is performed by one pouring device. In the meantime, by moving the ladle of the other pouring device to the hot water receiving position and receiving the hot water in the ladle, the pouring operation can be performed continuously without loss time. However, since the end of each of the middle frames provided in the plurality of pouring devices is configured to receive hot water in the ladle, the receiving device for supplying the molten metal to the ladle is provided for each pouring device. When it is necessary to arrange a hot water section and the furnace for holding the molten metal is at a remote position,
A separate transport mechanism for transporting the molten metal must be provided in the hot water receiving section, and there is a problem that the structure is complicated.

Further, as disclosed in Japanese Patent Application Laid-Open No. 7-185780, a holding furnace for holding a molten metal, first driving means for inclining the holding furnace and discharging the molten metal from a pouring opening thereof, A ladle that receives molten metal from the mouth,
A hoist for suspending the ladle and transporting the ladle from the installation position of the holding furnace to a pouring position of a mold (form), a weight detection unit for detecting a weight of the ladle, and a program control unit;
The weight of the ladle is detected as an electric signal, and the detected output is monitored. When the detected output reaches a preset value, the first
There is known a tapping device that controls the driving means of the above to stop the tapping of molten metal from a spout.

[0005] This tapping device is provided with a hoist for suspending the ladle and transporting it from the pouring position to the pouring position. At the time when the amount of molten metal in the ladle has decreased to a predetermined value or less, the ladle has the advantage of being able to be conveyed to the installation part of the holding furnace by the hoist to perform the hot-water receiving operation, but the ladle has an advantage. Since the entire pouring section having a tilting mechanism (second drive means) for tilting and pouring the mold is transported by the hoist,
It is necessary to set the strength of the transport mechanism composed of the hoist so as to be able to withstand the weight of the entire tapping section, and there is a problem that the transport mechanism is inevitably increased in size.

Further, since the ladle is tilted in a state in which the ladle is suspended by the transport mechanism including the hoist, the ladle is poured into the casting mold. When the hot water is transferred to the position and the hot water is being received, the casting operation cannot be performed on the mold, and the casting line must be stopped.

In view of such circumstances, the present invention makes it possible to easily perform a hot work on a ladle from a holding furnace installed at a distant position with a simple configuration, and to perform a pouring work on a casting mold. An object of the present invention is to provide an automatic pouring machine that can be efficiently operated.

[0008]

The invention according to claim 1 is
An automatic pouring machine configured to automatically pour the molten metal in the ladle into the mold by tilting the ladle, wherein the ladle is positioned between a pouring position and a pouring position. And a delivery mechanism for lowering the ladle transported to the pouring position by the transport mechanism and transferring the ladle onto the tilting mechanism. And guiding means for guiding and positioning the ladle when transferring the ladle onto the tilting mechanism by the transfer means.

According to the above construction, after the ladle to which the molten metal has been replenished at the receiving hot water position is conveyed to the pouring position by the conveying mechanism, the transferring means lowers the ladle onto the tilting mechanism and transfers the ladle. The ladle is guided by the guiding means and positioned properly.

According to a second aspect of the present invention, in the automatic pouring machine according to the first aspect, an engaging portion having a tapered projection provided on one of the ladle and the tilting mechanism, The guiding means is constituted by an engaged portion provided on the other side of the tilting mechanism and having a concave portion corresponding to the projection of the engaging portion.

According to the above construction, when the delivery means lowers the ladle onto the tilting mechanism and delivers the ladle, the protrusion of the engaging portion is fitted into the recess of the engaged portion, and the ladle is guided. Thereby, the ladle is easily and accurately positioned.

According to a third aspect of the present invention, in the automatic pouring machine according to the first or second aspect, the guiding means is provided near a pouring port of the ladle, and the ladle is guided by the guiding means. Then, it is configured to be positioned in the pouring direction.

According to the above configuration, when the delivery means lowers the ladle onto the tilting mechanism and delivers the ladle, the protrusion of the engaging portion is fitted into the recess of the engaged portion, and the like. The ladle is guided in the hot water receiving direction, and the ladle is accurately positioned at a position where pouring can be properly performed with respect to the pouring portion of the mold.

According to a fourth aspect of the present invention, in the automatic pouring machine according to any one of the first to third aspects, the ladle transported to the pouring position by the transport mechanism is moved to the pouring position. And positioning means for positioning in the transport direction.

According to the above construction, after the ladle to which the molten metal has been replenished at the hot water receiving position is transported to the pouring position by the transport mechanism, before the ladle is lowered onto the tilting mechanism by the delivery means and delivered, After the ladle is positioned in the transport direction by the positioning means, the ladle is lowered onto the tilting mechanism and delivered.

According to a fifth aspect of the present invention, in the automatic pouring machine according to any one of the first to fourth aspects, a hanging part for hanging a ladle is provided in the delivery means, and the hanging part is provided on the hanging part. The hook to be engaged is provided on the ladle, and the hook is guided to the central portion of the hanging portion along the inclined surface formed on the hanging portion and inclined downwardly, so that the hook can be moved in the ladle conveying direction. The hook is locked so that it is positioned.

According to the above configuration, when the ladle is suspended by engaging the hook of the ladle with the hanging portion of the delivery means, the hook is guided to the center of the hanging portion along the inclined surface of the hanging portion. By doing so, the ladle is transported between the pouring position and the hot water receiving position by the transport mechanism in a state where the hook and the ladle are positioned and locked in the ladle transport direction. .

According to a sixth aspect of the present invention, in the automatic pouring machine according to any one of the first to fifth aspects, the moving means for moving the tilting mechanism in a direction orthogonal to the ladle conveying direction is provided. It is provided.

According to the above construction, the ladle is delivered to the tilting mechanism while the tilting mechanism is moved to the rear delivery position by the moving means, and the tilting mechanism is moved to the forward operating position by the moving means. In this state, the ladle is tilted by this tilting mechanism, whereby pouring into the mold is performed.

According to a seventh aspect of the present invention, in the automatic pouring machine according to any one of the first to sixth aspects, the ladle is tilted while the ladle is being transported by the transport mechanism. An operating means is provided.

According to the above construction, when the automatic pouring machine is stopped or the like, the ladle is transported to the molten metal discharge position by the transport mechanism, and then the ladle is tilted and displaced by the tilting operation means. The molten metal in the pot can be discharged to a discharge section.

According to an eighth aspect of the present invention, in the automatic pouring machine according to any one of the first to seventh aspects, an opening / closing lid for opening and closing a ladle receiving port, and opening and closing driving of the ladle. A drive unit is provided on the ladle, and a balancer corresponding to the weight of the open / close lid is provided on the drive unit.

According to the above construction, after the ladle is conveyed to the hot water receiving position, replenishment of the molten metal is performed with the open / close lid open, and in a state where the open / close lid is closed after the replenishment of the molten metal, The ladle is transported to the pouring position by the transport mechanism.

[0024]

1 and 2 show an embodiment of an automatic pouring machine according to the present invention. This automatic pouring machine includes a ladle 1 for pouring a molten metal into a mold conveyed by a mold conveying line described later, and a ladle between a pouring position for the mold and a receiving position for the ladle 1. 1, a tilting mechanism 3 for tilting the ladle 1 at the time of pouring, and a ladle 1 transported to the pouring position by the transporting mechanism 2 to be transferred to the tilting mechanism 3 Delivery means 4.

The ladle 1 is provided with a pair of hooks 6 which are engaged with a hanging portion 5 provided on the transfer means 4 and a locked piece which is locked by a locking means described later provided on the tilting mechanism 3. 7, tilting operation means 8 for tilting the ladle 1 by manual operation in a state where the ladle 1 is transported by the transport mechanism 2, and a pouring port 9 for molten metal. In the vicinity of the pouring port 9,
A pair of left and right engaged parts 11 having a concave portion 10 of an upper constriction corresponding to a projection of an engaging part 12 provided in the tilting mechanism 3 is provided. The recess 10 is provided with a pair of opposing tapered surfaces disposed in the direction of pouring of the molten metal drawn out from the pouring port 9 of the ladle 1. The protrusion of the portion 12 is guided by the tapered surface and fits into the recess 10.

The transport mechanism 2 has a traveling carriage 14 traveling along a traveling rail 13 installed on a ceiling or the like.
As shown in FIG. 3, a pouring position 18, in which a pair of tilting mechanisms 3 are installed in parallel along the transfer line 66 of the mold A,
From 19, the ladle 1 is configured to be transported to the hot water receiving positions 15, 16 in which the molten metal holding furnaces 17 are installed in parallel. The ladle 1 received at the hot water receiving positions 15 and 16 is conveyed to the pouring positions 18 and 19 and transferred to the tilting mechanism 3.

The transport mechanism 2 has the pouring position 1 described above.
Positioning means 20 for positioning the ladle 1 conveyed to 8, 19 in the conveying direction is provided. As shown in FIG. 4, the positioning means 20 includes a support frame 21 installed along the transport rail 13 and a support frame 2.
A pair of swing arms 22 swingably supported by 1
And a drive cylinder 23 that swings and displaces the swing arm 22.

The traveling cart 14 is positioned at the pouring position 1
When it was confirmed that the vehicle had stopped after reaching 8,19,
The swing arm 22 is driven from a standby position shown by a solid line to a holding position shown by a virtual line by a drive cylinder 23, and a positioning arm 24 protruding from the traveling carriage 14 is provided at a tip end of the swing arm 23. By being held by the holding rollers 25, the displacement of the traveling direction of the traveling vehicle 14, that is, the displacement of the ladle 1 in the transport direction is corrected, and the ladle 1 is accurately positioned at the hot water receiving positions 18, 19. It has become so.

The delivery means 4 includes a hanging portion 5 of the hook 6.
The ladle 1 hung by the hanging part 5 is moved from the upper transfer position shown in FIG. 1 to a lower placement position, and transferred to the tilting mechanism 3. It is configured to be. As shown in FIG. 2, a pair of inclined surfaces 26, 26 inclined in a downward constriction are disposed on the hanging portion 5 so as to face the installation direction of the transport rail 13, that is, the transport direction of the ladle 1. When the hook 6 is engaged with the hanging portion 5, the hook 6 is guided to the center of the hanging portion 5 along the inclined surfaces 26, 26, so that the hook 6 is moved in the transport direction of the ladle 1. 6 is locked in a positioned state.

As shown in FIG. 1, the tilting mechanism 3 is provided with a guide rail 27 installed in a direction perpendicular to the direction in which the ladle 1 is transported by the transport mechanism 2, and along the guide rail 27 in FIG. From the rear delivery position shown in the figure, the moving means including the traveling base 28 traveling to the front operating position, the receiving frame 29 installed on the moving means including the traveling base 28, and the front moving position. A transport carriage 67 for transporting the traveling base 28 and the ladle 1 along the transport direction of the ladle 1, and a ladle 1 placed on the receiving frame 29;
A load sensor 30 for detecting the total weight of the mold, and a guide portion 31 for guiding the molten metal drawn out from the pouring port 9 of the ladle 1 to the pouring section of the mold.

The receiving frame 29 has an engaging portion 12 having a tapered projection formed at the upper end, support rollers 32 and 33 for supporting the bottom and rear of the ladle 1, and a front end. And a rack gear 35 extending in an arc from the rear to the bottom with the support shaft 34 as a center, and the engaging portion 12 provided on the receiving frame 29 is provided.
And the engaged portion 11 provided on the ladle 1
Of the ladle 1 for the tilting mechanism 3
At the time of delivery, the ladle 1 is guided and positioned in the pouring direction by the guiding means.

That is, as shown in FIG.
In the state where the tilting mechanism 3 has been moved to the rearward transfer position by the moving means 8, the ladle 1 is lowered by the transfer means 4 to move the ladle 1 from the upper transport position to the lower mounting position shown in FIG. 5. 1 is moved into the concave portion 10 of the engaged portion 11 provided on the ladle 1,
2 is inserted into the ladle 1 so that the ladle 1 is positioned in the pouring direction, that is, in the traveling direction of the traveling base 28, and is placed on the supporting rollers 32, 33 of the receiving frame 29.
Is placed and supported.

The rack gear 35 of the receiving frame 29 is engaged with a driving gear 36 provided on the traveling base 28, and the driving gear 36 is rotated by a driving motor 37, whereby the receiving frame 29 is rotated. The ladle 1 placed thereon is oscillatingly displaced with the support shaft 34 as a fulcrum, and from the initial position where the pouring port 9 is horizontal as shown by the solid line in FIG. The pouring port 9 is configured to be displaced to a tapping position in which the pouring hole 9 is lowered as shown by.

The receiving frame 29 includes a lock lever 38 whose tip is detachably engaged with the upper surface of the locked piece 7 protruding from the lower front surface of the ladle 1, and a lock lever 38. A lock means 40 having a driving cylinder 39 for driving is provided. When the ladle 1 is placed on the receiving frame 29, a lock lever 38 is driven by the driving cylinder 39 to move the tip end of the lock lever 38 to the engaged position. The ladle 1 is configured to be pressed against the upper surface of the stopper 7 to support the ladle 1 in a state where the ladle 1 is prevented from rising. As shown in FIG. 6, a support roller 41 abuts on the side wall surface of the ladle 1 to regulate the lateral movement thereof.
Is provided.

Tilt operating means 8 provided on ladle 1
As shown in FIG. 7, a trunnion shaft 42 protruding from the side wall surface of the ladle 1, a worm wheel 43 fixed to the trunnion shaft 42, a worm gear 44 for driving the worm wheel 43, and a worm gear It has a bevel gear mechanism 45 for transmitting a driving force to 44 and an operation handle 46 for driving the bevel gear mechanism 45.
By rotating the operation handle 46, a driving force is transmitted to the trunnion shaft 42 via the bevel gear mechanism 45, the worm gear 44, and the worm wheel 43, and the trunnion shaft 42 is rotationally driven to rotate the ladle. 1 is tilted and displaced.

As shown in FIG. 8, the pouring guide 31 provided on the tilting mechanism 3 is swingably supported on a rotation shaft 47 provided on the transport mechanism 3 as a fulcrum. At the same time, it is configured to be driven by a driving means 50 having a driving cylinder 48 and a driving lever 49 to swing and displace. In other words, the guide portion 31 swings from the lower pouring position indicated by the solid line in the drawing to the upper retracted position indicated by the imaginary line in accordance with the driving force of the driving means 50, thereby conveying the mold A. At the same time, the guide portion 31 is retracted upward so as not to come into contact with the mold A, and the guide portion 31 is positioned at a position corresponding to the pouring portion of the mold A when the molten metal is poured.
Is designed to descend.

In the above automatic pouring machine, as shown in FIG.
Pouring amount detecting means 51 for detecting the amount of pouring for mold A
And a remaining amount detecting means 52 for detecting the remaining amount of the molten metal stored in the ladle 1, and controlling so as to pour the molten metal stored in the ladle 1 into the mold A, and A pouring control means 53 for controlling the ladle 1 whose amount has been reduced to be conveyed to the receiving positions 15 and 16 to replenish the molten metal; and, when it is confirmed that an abnormal situation has occurred during pouring, Ladle 1 above
And an abnormal-time control means 54 for controlling the return to the initial position.

The pouring amount detecting means 51 controls the pouring position 1 according to a control signal or the like output from a casting production line.
The required pouring amount of the molten metal to the mold A sequentially conveyed to 8 and 19 is detected, and this detection signal is output to the pouring control means 53. Also, the remaining amount calculating means 5
2 obtains the remaining amount of the molten metal stored in the ladle 1 by subtracting the weight of the ladle 1 stored in advance from the total weight of the ladle 1 detected by the load cell 30 to obtain the remaining amount. It is configured to output an amount detection signal to the pouring control means 53.

The pouring control means 53 determines whether or not it is possible to continue pouring with the ladle 1 currently pouring according to the output signals of the pouring amount detecting means 51 and the remaining amount calculating means 52 and the like. And if it is determined that it is possible, the pouring with the ladle 1 is continued, and if it is determined that it is not possible, the ladle 1 to be poured is changed and At the same time as the pouring by the ladle 1 is started, the control signal for conveying the ladle 1 with the remaining amount of the molten metal to the receiving positions 15 and 16 to perform the hot-water receiving operation is transmitted to the transport mechanism controller 55 and It is configured to output to the tilting mechanism control unit 56.

The abnormal time control means 54 includes an emergency stop switch 57 operated by an operator in an emergency such as when a failure occurs in the casting line, and a person entering the work area where the pouring operation is performed. A door switch 58 for detecting that the molten metal has overflown, an overflow sensor 59 for detecting that the molten metal has overflowed from the mold A during the pouring operation on the mold A, and detecting whether or not the molten metal in the ladle 1 is flowing out of the pouring port 9. It is determined whether pouring can be performed normally according to the output signals from the hot water sensor 60 including the photo sensor and the load sensor 30, and if NO is determined, the ladle 1 is moved to the initial position. Is output to the tilting mechanism control unit 56.

As shown in FIG.
A pair of ladles 1 are installed at pouring positions 18 and 19 provided along 6, and the ladle 1 is selectively operated to perform pouring, and between the pouring positions 18 and 19. The control operation performed by the pouring control means 53 in the automatic pouring machine configured to convey with one mold A interposed will be described with reference to the flowcharts shown in FIGS. I do. When the control operation is started, first, it is determined whether or not the ladle 1 currently being poured is the first machine disposed at the pouring position 18 on the upstream side in the transport direction of the mold A (step S1), and YES is determined. When the determination is made, the remaining amount W of the molten metal in the ladle 1 of the first machine detected by the remaining amount detecting means 52 is stored (step S2).

Next, at the time of input of the pouring start signal, at least one frame of the pouring position 18 disposed on the upstream side in the conveying direction of the mold A detected by the pouring amount detecting means 51 is located upstream. The required pouring amount for the mold A arranged in a range from the located mold A to the installation position (the first machine) of the ladle 1 currently being poured, that is, the mold A transported to the current pouring position 18; After reading the required pouring amount for the mold A for two frames composed of the mold A located on the upstream side (step S3), based on the remaining amount W of the molten metal stored in the ladle 1 of the first unit. It is determined whether or not the two frames can be poured (step S4).

If the result of the determination in step S4 is NO, and it is confirmed by the ladle 1 of the first machine that pouring of the mold A into the two frames is impossible, the downstream side in the transport direction of the mold A No. 2 installed at the pouring position 19 of
After outputting a control signal instructing to start pouring when the unmoulded mold A arrives (step S5), one frame that has reached the pouring position 18 based on the remaining amount W of the first unit. It is determined whether pouring of the mold A into the mold is possible (step S6). If YES is determined in the step S4, the process directly proceeds to the step S6 to determine whether or not the mold A can be poured.

If YES is determined in the above step S6 and it is confirmed that pouring of the mold A that has reached the pouring position 18 where the currently-poured first machine is installed is possible, It is determined whether or not the pouring operation for the mold A has been completed (step S7). If the determination is NO, the ladle 1 of the first machine is detected while detecting the amount of pouring according to the detection signal of the load cell 30. Is output to the tilting mechanism control section 56 to cause the tilting to perform the pouring of the mold A (step S8).

Next, it is determined whether or not a predetermined amount of molten metal corresponding to the amount of molten metal poured into the mold A has been poured from the ladle 1 of the first machine in accordance with the output signal of the load cell 30 (step S9). If NO is determined, the process returns to step S8, and the pouring of the mold A is continued. If YES is determined in step S9 and it is confirmed that the pouring of the mold A is completed, the control signal for inverting the ladle 1 of the first unit and stopping the pouring of the mold A is provided. Is output to the tilting mechanism control unit 56 (step S10), and it is determined whether or not the tapping from the ladle 1 has stopped according to the detection signal of the tapping sensor 60 (step S11).

If the determination in step S11 is NO, 1
When it is confirmed that the hot water from the ladle 1 of the machine has not stopped, the process returns to the step S10, and the reversing operation of the ladle 1 is continued. Also, YES in the above step S11
When it is determined that the hot water from the ladle 1 has stopped, the amount of the molten metal poured into the mold A is subtracted from the remaining amount W of the first machine stored in the step S2. Thereby, the value of the remaining amount W of the molten metal stored in the storage means is corrected (Step S12). Next, the above step S12
It is determined whether or not it is possible to pour the mold A of the next frame located on the upstream side of the pouring position 18 based on the remaining amount W of the molten metal corrected in step (step S13), and YES is determined. In this case, the process returns and the control operation is repeated.

If the determination in step S13 is NO, the control signal for transporting the ladle 1 of the first machine to the hot water receiving positions 15 and 16 and receiving the hot water in the ladle 1 is transmitted to the transport mechanism controller. The hot water reception control is executed by outputting to the tilt control mechanism 55 and the tilting mechanism control section 56 (step S14), and thereafter, the process returns.
If it is determined NO in step S6 and it is confirmed that pouring of the mold A that has reached the pouring position 18 where the ladle 1 currently being poured is installed is impossible,
The pouring from the ladle 1 to the mold A is prohibited, and the process proceeds to step S14 to perform the hot water receiving operation.

That is, the traveling base 28 of the tilting mechanism 3
Is moved from the front operation position to the rear delivery position, the hanging portion 5 of the delivery means 4 is lowered, and the hook 6 of the ladle 1 is engaged with the hanging portion 5. The ladle 1 is raised to the transport position by the
Thus, the ladle 1 is transported to the hot water receiving positions 15 and 16 and the molten metal is supplied from the holding furnace 17 into the ladle 1.

Next, after the ladle 1 is returned to the pouring position 18 by the transport mechanism 2, the ladle 1 is lowered to the tilting mechanism 3 by the transfer means 4, and the ladle 1 is guided by the guiding means. It is placed on the receiving frame 29 while positioning in the pouring direction. Then, the traveling base 28 of the tilting mechanism 3 is moved from the rear delivery position to the front operating position, and stands by. When the pouring start signal is input, the tilting mechanism 3 is operated to take a shot. By pouring the pan 1, the casting mold A is poured through the pouring port 9 and the guide portion 31.

When the determination in step S1 is NO, it is confirmed that the ladle 1 currently being poured is the second machine disposed at the pouring position 19 on the downstream side in the transport direction of the mold A. As shown in FIG.
After storing the remaining amount W of the molten metal in the ladle 1 of the second unit detected at step S15 (step S15), at the time of input of the pouring start signal, transport of the mold A detected by the pouring amount detecting means 51 Pouring position 18 arranged on the upstream side in the direction
From the mold A located at least one frame upstream of
The required pouring amount for the mold A arranged in the range to the installation position of the ladle 1 during the current pouring (unit 2), that is, the pouring position of the second unit from the mold A located upstream of the pouring position 18 The required pouring amount for the mold A for four frames up to the mold A conveyed to 19 is read (step S16).

Next, it is determined based on the remaining amount W of the molten metal accommodated in the ladle 1 of the second unit whether or not the four frames can be poured (step S17). If the determination in step S17 is NO, and it is confirmed by the ladle 1 of the second machine that pouring of the mold A for the four frames is not possible, the ladle 1 is determined based on the remaining amount W of the molten metal. Unit 19 pouring position 19
It is determined whether or not pouring of the mold A for three frames located on the upstream side is possible (step S18). If YES is determined, the pouring position 18 on the upstream side in the transport direction of the mold A is determined.
A control signal for instructing the first machine disposed in the first time to start pouring from the next time is output (step S19).

In addition, NO is determined in the above step S18, and the position 3 is located upstream of the pouring position 19 of the second unit.
If it is confirmed that pouring of the mold A into the frame is impossible, after outputting a control signal instructing the first machine to start pouring from this time (step S
20) Based on the remaining amount W of the second unit, it is determined whether or not it is possible to pour one frame of the mold A that has reached the pouring position 19 (step S21). Next, it is determined whether or not the pouring operation for the mold A is completed (step S2).
2) If the determination is NO, the load cell 30
A control signal for tilting the ladle 1 of the second machine to execute the pouring of the mold A is output to the tilting mechanism control unit 56 while controlling the pouring amount according to the detection signal (step S23).

Thereafter, it is determined whether or not a predetermined amount of molten metal corresponding to the amount of molten metal poured into mold A has been poured from ladle 1 of Unit 2 in accordance with the output signal of load cell 30 (step S24). If determined, the process returns to step S23, and the pouring of the mold A is continued. If YES is determined in the step S24 and it is confirmed that the pouring of the mold A is completed,
After outputting a control signal for inverting the ladle 1 of the second machine to stop pouring of the mold A to the tilting mechanism control unit 56 (step S25), the ladle according to the detection signal of the tapping sensor 60 is output. It is determined whether or not the tapping from 1 has stopped (step S26).

If the determination in step S26 is NO,
When it is confirmed that the hot water from the ladle 1 of the unit has not stopped, the process returns to the step S25 and the reversing operation of the ladle 1 is continued. YES at step S26
When it is determined that the hot water from the ladle 1 has stopped, the molten metal poured into the mold A is subtracted from the remaining amount W of the second machine stored in the step S15. Thereby, the value of the remaining amount W of the molten metal stored in the storage means is corrected (step S27). Next, the above step S12
It is determined whether or not it is possible to pour the mold A of the next frame located on the upstream side of the pouring position 18 based on the remaining amount W of the molten metal corrected in step (step S28), and YES is determined. In this case, the process returns and the control operation is repeated.

If the determination in step S28 is NO, and it is confirmed that pouring of the mold A of the next frame located on the upstream side of the pouring position 18 is impossible, the ladle of the second unit is used. The control signal is transmitted to the transport mechanism control unit 55 and the tilting mechanism control unit 56 to carry the hot water to the hot water receiving positions 15 and 16 and to receive the hot water into the ladle 1 (step S29). On the other hand, when it is determined as NO in the above step S21 and it is confirmed that pouring of the mold A that has reached the pouring position 19 where the ladle 1 currently being poured is installed is impossible, Pouring of molten metal from ladle 1 to mold A is prohibited, and the process returns to step S29 to execute hot water receiving control and then returns.

Next, the control operation executed by the abnormal time control means 54 will be described with reference to the flow charts shown in FIGS. When the control operation starts, it is determined whether or not the emergency stop switch 57 has been operated (step S31). If the determination is YES, an alarm for notifying that an abnormal situation has occurred is activated ( Step S32), the control signal for returning the ladle 1 currently being poured to the initial position is sent to the tilting mechanism controller 5
6 and the pouring operation by the ladle 1 is interrupted (step S33).

If NO is determined in the step S31, it is determined whether the door switch 58 is turned on (step S34). If YES is determined, the step S32 is determined. To execute the control when an abnormality occurs. Next, the overflow sensor 59
It is determined whether or not the molten metal overflows from the mold A at the time of pouring according to the output signal of step S35 (step S35).
If determined to be S, the process proceeds to step S32 to execute control when an abnormality occurs. When the automatic pouring machine is operated, the determination operations of steps S31, S34, and S35 are executed at predetermined time intervals, and when it is confirmed that an abnormality has occurred, the control at the time of occurrence of the abnormality is performed. Is configured.

Next, at the time of input of the pouring start signal, a control signal for starting the pouring of the mold A by tilting the ladle 1 by the tilting mechanism 3 is output to the tilting mechanism controller 56 (step S36). The timer is set (step S37). When the timer expires, the ladle 1 is set in accordance with the detection signal of the tapping sensor 60.
It is determined whether or not the molten metal flows out of the pouring port 9 (step S38).

If NO is determined in step S38, it is confirmed that the tapping of the ladle 9 has not started even though a predetermined time has elapsed since the start of the tilting of the ladle 1. In step S32, it is determined that a failure has occurred in the tapping sensor 60 or the tilting mechanism 3.
To activate an alarm for notifying that an abnormal situation has occurred, and to execute control at the time of occurrence of an abnormality for returning the ladle 1 currently being poured to the initial position.

It is determined YES in the above step S38,
If it is confirmed that the tapping has started, it is determined whether or not the remaining amount of the molten metal stored in the ladle 1 has changed according to the output signal of the load cell 30 (step S3).
9), NO is determined in this step S39, and although it is confirmed that the molten metal is flowing out of the pouring port 9 of the ladle 1 according to the detection signal of the molten metal sensor 60, the remaining molten metal remains. If the amount has not changed, it is determined that a failure has occurred in the tapping sensor 60 or the load cell 30, and the process proceeds to step S32 to execute control when an abnormality has occurred.

If the determination in step S39 is YES, the load cell 30 determines whether or not a predetermined amount of molten metal corresponding to the amount of molten metal to the mold A has been poured from the ladle 1 of the first machine. (Step S40), and if NO is determined, the process returns to step S36 to continue the pouring operation, and proceeds to step S40.
When it is determined to be YES in 40, the ladle 1 is turned over after outputting a control signal for inverting the ladle 1 and stopping pouring of the mold A to the tilting mechanism control unit 56 (step S41). It is determined whether the timer for confirming the return to the position has timed out (step S4).
2).

If NO is determined in the step S42, the ladle 1 is inverted to the hot water stop position in accordance with a detection signal output from an angle detecting means (not shown) for detecting the tilt angle of the ladle 4. (Step S4)
3). If NO is determined in step S43, the process returns to step S41, and the reversing operation of the ladle 1 is continued. Further, when it is determined that the ladle 1 has been inverted to the hot water stop position when YES is determined in step S43 or YES is determined in step S42, control for stopping the inversion operation of the ladle 1 is performed. After outputting the signal to the tilting mechanism control unit 56 (step S44),
A timer is set (step S45).

When it is confirmed that the timer has timed out, it is determined whether or not the tapping from the pouring port 9 has stopped according to the detection signal of the tapping sensor 60 (step S46). In this step S46, N
If it is determined as O and it is confirmed that the tapping from the pouring port 9 has not stopped despite the lapse of a predetermined time from the end of the reversing operation of the ladle 1, the tapping sensor It is determined that a failure has occurred in the tilting mechanism 60 or the tilting mechanism 3, and the process proceeds to step S32, where control is performed when an abnormality occurs.

The determination in step S46 is YES,
When it is confirmed that the tapping has stopped, it is determined whether or not the remaining amount of the molten metal stored in the ladle 1 has changed according to the output signal of the load cell 30 (step S4).
7) In spite of the determination of NO in step S47, it is confirmed that the flow of the molten metal has stopped from the pouring port 9 of the ladle 1 in accordance with the detection signal of the tapping sensor 60,
When it is confirmed that the remaining amount of the molten metal has changed, it is determined that a failure has occurred in the tapping sensor 60 or the load cell 30, and the process proceeds to step S32 to execute control at the time of occurrence of an abnormality. Also, in the above step S47, Y
If it is determined to be ES, it is determined that the pouring control has been executed normally, and the control operation ends.

The transport mechanism 2 for transporting the ladle 1 between the pouring positions 15 and 16 and the pouring positions 18 and 19 as described above, and the ladle set at the pouring positions 18 and 19 for the mold A A tilting mechanism 3; a transfer means 4 for lowering the ladle 1 transported to the pouring positions 18 and 19 by the transport mechanism 2 and transferring the ladle 1 onto the tilting mechanism 3;
When the ladle 1 is transferred to the tilting mechanism 3 by the above, the guiding means including the engaging portion 12 and the engaged portion 11 for guiding and positioning the ladle 1 is provided. Even when the pouring position 16 and the pouring positions 18 and 19 are separated from each other, a hot water receiving operation for supplying the molten metal to the ladle 1 can be easily performed with a simple configuration.

That is, the tilting mechanism 3 having a large weight
Is left at the pouring positions 18 and 19, and only the ladle 1 is moved from the pouring positions 18 and 19 by the transport mechanism 2 to the receiving position 1
Since it can be transported to 5 and 16 for hot water reception,
The structure can be simplified and the manufacturing cost can be kept low without increasing the size of the transport mechanism 2. Also,
Since the ladle 1 can be transferred from the transport mechanism 2 onto the tilting mechanism 3 while the ladle 1 is positioned by the guiding means, the ladle 1 is detached from the tilting mechanism 3 and transported as described above. Nevertheless, the tilting mechanism 3
The ladle 1 is placed in an appropriate state on the upper side, and the ladle 1 can be tilted and displaced by the tilting mechanism 3.

Further, after the ladle 1 is delivered from the transport mechanism 2 onto the tilting mechanism 3, another ladle 1 can be transported to the hot water receiving positions 15 and 16 by the transport mechanism 2, so that The plurality of ladles 1 can be sequentially conveyed by the conveying mechanism 2. Therefore, by arranging a plurality of ladles 1 at the pouring positions 18 and 19 and performing the pouring operation alternately, one of the ladles 1 is transported to the pouring position and the pouring operation is performed. While the casting is being performed, the pouring operation for the mold A can be performed by the other ladle 1 without stopping the casting line, so that the operation efficiency can be improved.

In the above-described embodiment, the engaging portion 12 provided on the tilting mechanism 3 and having the tapered projection is provided.
Since the guiding means is constituted by the engaged portion 11 having the concave portion 10 corresponding to the engaging portion 12 provided in the ladle, when the transfer means 4 lowers the ladle 1 onto the tilting mechanism 3 and transfers it. By inserting the projection of the engaging portion 12 into the concave portion 10 of the engaged portion 11 and guiding the ladle 1, the ladle 1 can be easily and accurately positioned.

Instead of the above embodiment, an engaging portion 12 having a tapered projection is provided on the pot 1 and an engaged portion having a concave portion 10 corresponding to the projection of the engaging portion 12 is provided. 11 may be provided in the tilting mechanism 3,
In the case of such a configuration, the concave portion 1 recessed downward
0 is formed in the tilting mechanism 3, and there is a possibility that the molten metal flowing from the ladle 1 may collect in the concave portion 10. Therefore, as shown in the above embodiment, the engaging portion 12 having the tapered projection is tilted. It is desirable to provide the mechanism 3 with a structure in which the engaged portion 11 having the concave portion 10 corresponding to the protrusion of the engaging portion 12 is provided in the ladle 1.

In the above embodiment, the guiding means is provided near the pouring port 9 of the ladle 1, and the guiding means guides the ladle 1 to position it in the pouring direction. By guiding the vicinity of the pouring port 9 of the ladle 1 in the pouring direction by the above guiding mechanism,
The distance between the pouring section of the mold 1 and the pouring port 9 is appropriately set, and the ladle 1 is accurately positioned at a position where the pouring section can be properly poured with respect to the pouring section of the mold A. it can.

Further, in the above embodiment, the transport mechanism 2
The positioning means 20 for positioning the ladle 1 conveyed to the pouring positions 18 and 19 in the conveying direction at the pouring positions 18 and 19 is provided.
After the ladle 1 having received the hot water in 6 is conveyed to the pouring positions 18 and 19 by the conveying mechanism 2, before the ladle 1 is lowered onto the tilting mechanism 3 by the transfer means 4 and transferred, the positioning is performed. The ladle 1 can be positioned by the means 20. Therefore, even when it is difficult to set the stop position of the ladle 1 accurately when the transport speed of the ladle 1 by the transport mechanism 2 is increased and the transport of the ladle 1 is stopped, the ladle 1 is placed on the tilt mechanism 3. When the ladle 1 is positioned in the conveying direction of the ladle 1, the ladle 1 can be placed on the tilting mechanism 3 in an appropriate state.

In the above embodiment, the transfer means 4 is provided with the hanging portion 5 for hanging the ladle 1, and the hook 6 engaged with the hanging portion 5 is provided on the ladle 1. 5 sloping surfaces 26, 26 formed on the lower surface and inclined
The hook 6 is guided along the center of the hanging portion 5 so as to be locked in a state where the hook 6 is positioned in the conveying direction of the ladle 1. When the hook 6 of the ladle 1 is engaged and the ladle 1 is suspended, the hook 6 and the ladle 1 are automatically positioned and locked in the conveying direction of the ladle 1, and The ladle 1 can be transported from the pouring positions 18 and 19 to the receiving positions 15 and 16 by the transport mechanism 2 to perform the hot water receiving operation.

In the above embodiment, the traveling base 2 for moving the tilting mechanism 3 in a direction perpendicular to the direction of transport of the ladle 1
8, the tilting mechanism 3 is moved to the rear delivery position by the moving means.
The ladle 1 is delivered to the tilting mechanism 3 and the ladle 1 is tilted by the tilting mechanism 3 in a state where the tilting mechanism 3 is moved to the forward operating position by the moving means, so that the die A Can be poured. Therefore, as described above, the plurality of tilt mechanisms 3
Even when the ladle 1 is installed in parallel, it is possible to transport the other ladle 1 by the transport mechanism 2 and perform the delivery operation without buffering the ladle 1 installed at the operating position. it can.

Further, in the above embodiment, the tilting means 8 for tilting the ladle 1 is provided while the ladle 1 is suspended by the transfer mechanism 2, so that the operation of the automatic pouring machine is stopped. For example, when the ladle 1 is transported to the molten metal discharge position by the transport mechanism 3, the ladle is tilted and displaced by the tilting operation means 8 so that the molten metal in the ladle 1 is discharged to a discharge section such as a drain tank. When the operation of the automatic pouring machine is stopped, the occurrence of a situation in which the molten metal is hardened in the ladle 1 can be prevented.

As shown in FIGS. 16 and 17,
An opening / closing lid 61 for opening / closing a hot water port of the ladle 1 is provided, and includes an opening / closing drive arm 62 arranged at the hot water receiving positions 15, 16 and a rotary cylinder (not shown) for operating the opening / closing drive arm 62. The opening and closing lid 61 may be configured to be opened and closed by a driving unit having a driving unit. That is, the drive shaft 63 installed at the upper end of the ladle 1
The opening / closing lid 61 is swingably supported by this. A balancer 64 slightly lighter than the weight of the opening / closing lid 61 is provided at both ends of the drive shaft 63, and a driven arm 65 is protruded from the balancer 64. When the driven arm 65 is pushed by the open / close drive arm 62, the drive shaft 63 is rotated and displaced, and the open / close lid 61 is rocked from the closed position shown in FIG. 16 to the open position shown in FIG. You may do so.

The opening / closing lid 61 for opening and closing the hot water port of the ladle 1 is provided as described above.
When the opening and closing drive is performed at 16, when the hot-water receiving operation for replenishing the molten metal into the ladle 1 from the holding furnace 17 is performed, the open-close lid 61 is opened to open the hot-water receiving operation. Can be easily performed, and the ladle 1 can be transported to the pouring positions 18 and 19 to perform the pouring operation in a state where the opening / closing lid 61 is closed after the hot water is received. Therefore, it is possible to effectively prevent the temperature of the molten metal from lowering during the transportation of the ladle 1 and the pouring operation. When a balancer 64 corresponding to the weight of the opening / closing lid 61 is provided on the drive shaft 63 so as to balance the weight of the balancer 64 and the weight of the opening / closing lid 61, the opening / closing lid 61 is moved with a light force. There is an advantage that it can be opened and closed.

In the above embodiment, the pouring amount detecting means 51 for detecting the pouring amount for the mold A and the remaining amount detecting means 52 for detecting the remaining amount of the molten metal contained in the ladle 1 are described.
And pouring control means 53 for controlling the ladle 1 disposed at the pouring positions 18 and 19 to perform pouring by selecting the ladle 1. The pouring amount detecting means 51 and the remaining amount detecting means 52 are provided. The pouring control means 53 determines whether or not pouring can be continued by the ladle 1 currently pouring in response to the detection signal of. Since the ladle 1 is changed to start pouring by the ladle 1 on standby, the ladle 1 disposed at the pouring position 19 located on the downstream side in the transport direction of the mold A is upstream from the ladle 1. When changing to the other ladle 1 arranged at the pouring position 18 located on the side, the mold A not yet poured is prevented from passing through the other ladle 1, and the ladle is prevented. 1 can be appropriately executed.

In the above embodiment, if it is confirmed that an abnormal situation has occurred during pouring, the abnormal time control means 54 controls the ladle 1 to return to the initial position.
An emergency stop switch 57 operated by an operator in an emergency such as when a failure occurs in the casting line,
A door switch 58 for detecting that a person has entered the work area where the pouring operation is performed; an overflow sensor 59 for detecting that the molten metal has overflowed from the mold A during the pouring operation for the mold A; Is determined according to the output signal of the hot water sensor 60 including a photo sensor or the like for detecting whether or not is flowing out of the pouring port 9 and the output signal of the load sensor 30. When it is determined, the control signal for returning the ladle 1 to the initial position is output from the abnormal time control means 54 to the tilting mechanism control unit 56. The pouring operation can be stopped immediately by returning to the initial position.

[0079]

As described above, according to the present invention, the transport mechanism for transporting the ladle between the pouring position and the pouring position, and the tilting mechanism for the ladle installed at the pouring position with respect to the mold. Delivery means for lowering the ladle transported to the pouring position by the transport mechanism and delivering the ladle onto the tilting mechanism,
When the ladle is transferred to the tilting mechanism by the transfer means, the guiding means for guiding and positioning the ladle is provided, so that the tilting mechanism having a large weight is left at the pouring position. Since only hot water can be transferred from the pouring position to the hot water receiving position by the transfer mechanism and the hot water can be received, the structure can be simplified and the manufacturing cost can be reduced without increasing the size of the transfer mechanism. it can. In addition, since the ladle can be transferred from the transport mechanism onto the tilting mechanism in a state where the ladle is positioned by the guiding means, the ladle can be detached from the tilting mechanism and transported as described above. Regardless, the ladle can be placed on the tilting mechanism in an appropriate state, and the ladle can be tilted and displaced by the tilting mechanism.

Further, after the ladle is transferred from the transport mechanism to the tilting mechanism, another ladle can be transported to the hot water receiving position by the transport mechanism. Can be sequentially conveyed. Therefore, by arranging a plurality of ladles at the pouring position and alternately performing the pouring operation, one of the ladles is transported to the receiving position and the receiving operation is performed. In addition, since the pouring operation for the mold can be performed by the other ladle without stopping the casting line, the operation efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an automatic pouring machine according to the present invention.

FIG. 2 is a side view of the automatic pouring machine.

FIG. 3 is a plan view showing a structure of an installation part of the automatic pouring machine.

FIG. 4 is a plan view showing a configuration of a positioning unit.

FIG. 5 is a front view showing a specific configuration of a ladle tilting mechanism.

FIG. 6 is a side view showing a specific configuration of a tilting mechanism of a ladle.

FIG. 7 is a cross-sectional view showing a specific configuration of the tilt operation mechanism.

FIG. 8 is an explanatory diagram showing a specific configuration of a guide portion for molten metal.

FIG. 9 is a block diagram illustrating a specific configuration of a control unit.

FIG. 10 is a flowchart showing a first step of a pouring control operation.

FIG. 11 is a flowchart showing a second step of the pouring control operation.

FIG. 12 is a flowchart showing a third step of the pouring control operation.

FIG. 13 is a flowchart showing a fourth step of the pouring control operation.

FIG. 14 is a flowchart showing a first step of the control operation by the abnormal time control means.

FIG. 15 is a flowchart showing a second step of the control operation by the abnormal time control means.

FIG. 16 is an explanatory diagram showing a closed state of an opening / closing lid.

FIG. 17 is an explanatory diagram showing an open state of an opening / closing lid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ladle 2 Transport mechanism 3 Tilting mechanism 4 Delivery means 5 Hanging part 6 Hook 8 Tilting operation means 10 Depression 11 Engaged part (induction means) 12 Engagement part (induction means) 20 Positioning means 26 Inclined surface 28 Moving base (Transportation means) 61 Opening / closing lid 64 Balancer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B22D 47/00 B22D 47/00

Claims (8)

[Claims] 1. An automatic pouring machine configured to automatically pour molten metal in a ladle into a mold by tilting the ladle, wherein a ladle position and a pouring position are defined. A transport mechanism for transporting the ladle in between, a tilting mechanism of the ladle installed at the pouring position for the mold, and lowering the ladle transported to the pouring position by the transport mechanism, on the tilting mechanism An automatic pouring machine comprising: a delivery means for delivering and a guiding means for guiding and positioning the ladle when the ladle is delivered to the tilting mechanism by the delivery means. 2. An engaging portion having a tapered projection provided on one of the ladle and the tilting mechanism, and a projection of the engaging portion provided on the other of the ladle and the tilting mechanism. 2. The automatic pouring machine according to claim 1, wherein said guiding means is constituted by an engaged portion having a concave portion. 3. The ladle is provided with a guide in the vicinity of a pouring port of the ladle, and the ladle is guided by the guide and positioned in the pouring direction. The automatic pouring machine according to claim 2. 4. A ladle conveyed to a pouring position by the conveying mechanism is provided with a positioning means for positioning the ladle in the conveying direction at the pouring position. Automatic pouring machine according to the above. 5. The delivery means is provided with a hanging portion for hanging a ladle, a hook engaged with the hanging portion is provided on the ladle, and the inclined surface formed on the hanging portion is inclined downwardly. The hook is guided in the direction of the center of the hanging part so as to be locked in a state where the hook is positioned in the ladle conveying direction.
The automatic pouring machine according to claim 4. 6. An automatic pouring machine according to claim 1, further comprising a moving means for moving said tilting mechanism in a direction perpendicular to a ladle conveying direction. 7. In the transfer state of the ladle by the transfer mechanism,
7. The automatic pouring machine according to claim 1, further comprising a tilting operation means for tilting the ladle. 8. An opening / closing lid for opening and closing a ladle receiving port of a ladle, and a driving unit for opening and closing the ladle, wherein a driving unit is provided on the ladle.
The automatic pouring machine according to any one of claims 1 to 7, wherein a balancer corresponding to the weight of the opening / closing lid is provided in the driving unit.