JPH0153149B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic hot water supply control device for selectively pouring hot water from a melting furnace into a plurality of casting machines.

In conventional casting operations, particularly casting operations using a gravity casting machine, a sand mold is first set in a mold of the gravity casting machine, and then the mold is tilted at an angle that makes it easiest to pour hot water into the sand mold. Here, the worker pours hot water supplied from the melting furnace into the mold using a ladle, then tilts the mold further, and when the hot water in the mold hardens, the worker tilts the mold. Return it and take out the product. After this, a new sand mold is set in the mold again and the process moves on to casting the next product.

As described above, in conventional casting work, workers supply hot water while going back and forth between the melting furnace and the casting machine, which not only poses danger, but also requires approximately one worker per casting machine. There were shortcomings that the workers had to take care of.

Therefore, if there was a device that could automatically pour hot water from a melting furnace into multiple casting machines, the above drawbacks could be solved. Specifically, a conveyance path is provided between a melting furnace and a plurality of casting machines, a water heater is movably provided on this conveyance path, and the operation of this water heater is controlled by, for example, a relay sequence. Therefore, a method can be considered in which hot water from the melting furnace is sequentially poured into each casting machine.

However, this method of pouring hot water into multiple casting machines in a predetermined order poses a problem that cannot be applied, for example, when multiple casting machines are used to cast different products. Ru. This is because when different products are cast using multiple casting machines, the time from pouring the hot water until it hardens is different for each casting machine, so the pouring order cannot be uniformly prescribed in advance.

Additionally, in general, in this type of casting machine, once the sand mold is set inside the mold, after the mold is closed,
Although the sand mold is tilted at a predetermined angle, if the sand mold is not properly set inside the mold, the sand mold may be damaged by the closing operation of the mold. Another problem that can occur is when the inclination of the mold is not set at the correct angle. Therefore, for example, if you want to take into account the time it takes for the water heater to move from the melting furnace to the casting machine, and output the start signal when the sand mold is set inside the mold,
Molten metal may be poured into the mold before it is properly poured.

An object of the present invention is to be able to determine the pouring order according to the cycle of each casting machine, and to reliably perform an efficient pouring operation. An object of the present invention is to provide an automatic hot water supply control device.

Therefore, in the present invention, a conveyance path is provided between the melting furnace and the plurality of casting machines, and a hot water supply device that pours hot water supplied from the melting furnace to the plurality of casting machines is moved to this conveyance path. a first start signal generating means which is freely provided and further outputs a first start signal on condition that preparation for pouring has been completed to a predetermined stage in each of the casting machines; A second activation signal generation means that outputs a second activation signal on the condition that all the activation signals are completed, and a control means are provided, and the control means is configured to output a second activation signal from the first activation signal generation means. a storage unit for sequentially storing the first start signals stored in the storage unit, and controlling the water supply device to sequentially pour hot water from the melting furnace into the casting machine specified according to the storage order of the first start signal stored in the storage unit; , determining the presence or absence of a second start signal from the second start signal generating means at a predetermined position where the water heater moves from the melting furnace to the designated casting machine, and only when the second start signal is present. The above object is attempted to be achieved by having a configuration that includes means for continuing the pouring operation to a designated casting machine. That is, by controlling the water heater to sequentially pour hot water from the melting furnace into the casting machine designated according to the storage order of the first start signal stored in the storage section, preparation for pouring is performed. To pour molten metal in the order of completed casting machines, and to arbitrarily determine the pouring order according to the cycle of each casting machine.
At this time, the output timing of the first start signal is set at a predetermined stage when the preparation for pouring is in progress, such as when the sand mold is set in the mold in each casting machine, and all that remains is the operation of closing and tilting the mold. By determining the pouring order at an early stage and increasing efficiency, by setting the timing at which the melting process is completed, the pouring order is determined early, and the efficiency is increased. By determining the presence or absence of the second start signal and continuing the pouring operation to the specified casting machine only when the second start signal is present,
The pouring operation is performed reliably on the condition that all preparations for pouring have been completed, including that the mold, including the closed and tilted molds, is set in a pourable state.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire system of this embodiment. In this system, a base 3 is arranged in parallel between one electric melting furnace 1 and multiple gravity casting machines 2 ₁ to 2 _o . The melting furnace 1 is provided with a hot water temperature detector 9 that detects the hot water temperature in the furnace from above and provides the hot water temperature data to a controller 8 serving as a control means. As the hot water temperature detector 9, for example, an optical temperature detector is used. Each of the casting machines 2 ₁ to 2 _o is set at a predetermined inclination angle before and after pouring the metal, with a sand mold set inside the mold. On the other hand, in the vicinity of each casting machine 2 ₁ to 2 _o , there are operating units 4 ₁ to 4 _o.
are provided for each. Each of the operation parts ₄₁ to _4o has a first activation signal generating means that is operated on the condition that the pouring preparation has been completed to a predetermined stage, in this case that the sand mold has been set in the mold. The first start button K ₁₁ to _{K 1o} indicates that all pouring preparations have been completed and the mold is set to be ready for pouring, that is, after the mold is closed with the sand mold set inside it. A second activation signal generating means that is operated on the condition that it is tilted at a predetermined angle.
Activation buttons K ₂₁ to K _2o and release buttons C ₁ to _{C o} are provided, respectively. and the first start button
A first activation signal based on the operation of K ₁₁ to _{K 1o} , a second activation signal based on the operation of the second activation buttons K ₂₁ to K _2o , and a release signal based on the operation of the release buttons C ₁ to _{C o} . are respectively given to the controller 8. Further, a hot water supply device 6 is movably provided on the upper surface of the base 3 via a guide rail 5 serving as a conveyance path, and a hot water supply device 6 is movably provided on the upper surface of the base 3.
A home position detector 7 is provided for detecting that the water heater 6 has come to a home position P ₀ opposite to the home position P 0 and providing a home position signal to the controller 8 . Further, at this home position _P0 , when the water heater 6 is in a standby state, a ladle temperature sensor detects the temperature of the inner and outer surfaces of a ladle 29 provided in the water heater 6 and provides the temperature data to the controller 8. A container 10 is provided. The controller 8 includes:
The first activation button K ₁₁ in each of the operation units 4 ₁ to 4 _o
The first starting signals given by the operation of the melting furnace ₁ are sequentially stored, and the hot water supplied in the melting furnace 1 is sequentially stored in the casting machines 2 ₁ to 2 _o designated according to the order of storage. The operation of the hot water supply device 6 for pouring hot water is controlled based on a predetermined procedure.

FIG. 2 shows a specific structure of the water heater 6. As shown in FIG. In the water heater 6, carriers 11 are slidably mounted on guide rails 5 on both sides of the base 3. The carrier 11 has a rack 12 fixed to the guide rail 5 on one side at its lower part.
A pinion 13 that meshes with the pinion 13 and a travel motor 14 that moves the carrier 11 along the guide rail 5 by rotating the pinion 13 are provided, and the housing 16 is connected to the housing 16 via a support 15 on the upper part. is installed. The housing 16 rotatably supports a rotating shaft 18 rotated by a ladle tilting motor 17 at its upper portion, and a rotating shaft 20 rotated by a link actuating motor 19 at its middle portion. A link mechanism 21 is provided between the rotating shafts 18 and 20. The link mechanism 21 includes first and second arms 22, 2 each having one end rotatably supported by the rotating shaft 18.
3, a third arm 24 having one end rotatably connected to the other end of the first arm 22, and a third arm 24 having one end rotatably connected to the other end of the second arm 23 and the other end. is rotatably connected to one end of the third arm 24, and one end is fixed to the rotating shaft 20 and the other end is rotatable to one end of the fourth arm 25. When the fifth arm 26 is swung by the drive of the link operating motor 19, the other end of the third arm 24 is rotated as shown by the chain line in the figure. It is designed to be displaced through a trajectory.
Further, the third arm 24 is provided with a hot water level detection sensor 27 having, for example, a pair of electrodes arranged in parallel on one side thereof, and the rotating shaft 18 at one end thereof.
A ladle 29 is attached via a support shaft 28 which is connected to the rotary shaft 28 via an interlocking mechanism (not shown) and rotates in synchronization with the rotating shaft 18 . Here, when the melt level of the melting furnace 1 is detected by the melt level detection sensor 27, the drive of the link operation motor 19 is stopped, and then the ladle tilting motor 17 is driven, and the ladle 29 is tilted. It is becoming more and more common.

On the other hand, a rotary lever 30 is integrally fixed to the rotary shaft 18, and a hot water flow control device 31 is provided in the housing 16 to abut the rotary lever 30 and stop driving the ladle tilting motor 17. ing. The hot water flow control device 31 includes a switch 32 that stops the ladle tilting motor 17 when it comes into contact with the rotary lever 30, and a switch 32 that moves the switch 32 forward and backward relative to the rotary lever 30 to rotate the rotary lever 30. It is composed of a hot water amount control motor 33 that controls the angle, that is, the angle of inclination of the ladle 29. Here, when the ladle 29 is tilted at an angle set by the hot water amount control device 31, hot water is poured into the ladle 29 in an amount corresponding to the tilt angle. After this, Ladol 29,
After being raised from the melting surface of the melting furnace 1 in that position by the operation of the link mechanism 21, the hot water is drained and the position is controlled to a horizontal state, and each casting machine 2 ₁ -
At the _2o position, it is turned upward by 90 degrees about the support shaft 28.

FIG. 3 shows a specific circuit configuration of the controller 8. As shown in FIG. In the same figure, CPU (Central
The processing unit 41 is connected to I/O units 43, 44,
ROM (Read Only Memory) 45 and RAM
(Random Access Memories) 46 are connected to each. The I/O unit 43 receives various signals from the operating units 4 ₁ to 4 _o , a home position signal from the home position detector 7, hot water temperature data Q from the hot water temperature detector 9,
Ladle inner and outer surface temperature data θ ₁ , θ ₂ from the ladle temperature detector 10 and the hot water level detection sensor 27
A keyboard 47 is also connected. From the keyboard 47, distance data L ₁ -L _o from each casting machine 2 ₁ - 2 _o to the melting furnace 1 and each casting machine 2 ₁ -
At step 2 _o , the required hot water amount data G ₁ to _{G o} are input. Further, the I/O unit 44
In addition to the traveling motor 14, the link actuating motor 19, the ladle tilting motor 17, and the hot water amount control motor 33, a display 48 is connected to the . The display 48 is configured to sequentially display machine numbers corresponding to, for example, the first to third casting machines 2 ₁ to 2 _o that execute the pouring operation. Further, the ROM 45 stores in advance a sequence program for controlling the driving of the various motors based on input data such as the activation signal.

On the other hand, the RAM 46 includes a distance register 4.
9, hot water flow register 50, ladle temperature register 5
1. Hot water temperature register 52, speed command register 5
3. First and second activation signal registers 54A,
54B, a release signal register 54C, first and second counters 55 and 56, and a timer counter 57, respectively. The distance register 49
The distance data L ₁ to L _o inputted from the keyboard 47 are entered into the hot water quantity register 50 , and the hot water quantity data G ₁ to G _o inputted from the keyboard 47 are entered into the hot water quantity register 50 .
are preset respectively. The ladle temperature register 51 and hot water temperature register 52 contain ladle inner and outer surface temperature data θ ₁ , θ ₂ detected by the ladle temperature detector 10 every time the water heater 6 comes to the home position P ₀ . , hot water temperature detector 9
The hot water temperature data Q detected in is newly written. In addition, the speed command register 53 stores in advance a plurality of types of speed command data V _A to V _D that define the moving speed of the carrier 11 when the carrier 11 is moved to the specified casting machine 2 ₁ to 2 _o . remembered. Further, the first activation signal register 54A
The first activation signal given by the operation of the first activation button K ₁₁ to _{K 1o} of each operation unit 4 ₁ to 4 _o is sent to the second activation signal register _54B .
The second activation signal given by the operation of the second activation button _K21 ~ _K2o of ~ _4o is stored in the release signal register 54C of the release button _C1 ~C of each operating section ₄₁ ~ _4o . Each release signal given by the operation of _o is encoded and stored. Further, the first counter 55 is preset with a count number corresponding to the normal operating time T during which the ladle 29 pumps up hot water in the melting furnace 1, and the second counter 56 is preset with a count number corresponding to the normal operating time T during which the ladle 29 pumps hot water in the melting furnace 1. The sum of the count number and the count number corresponding to the additional immersion time ΔT of the ladle obtained by the calculation described later is set.

Next, the operation of this embodiment will be explained.

First, on the keyboard 47, each casting machine 2 ₁
After inputting the distance data L ₁ to _Lo from ~2 _o to the melting furnace 1 in order, the amount data G ₁ to _{Go of} the melt required for each casting machine 2 ₁ to 2 _o is input in order.
Then, the distance data L ₁ to _{L o} are stored in the distance register 49.
Then, the hot water amount data G ₁ to _{G o} are respectively stored in the hot water amount register 50 . On the other hand, in the standby state where the hot water supply device 6 is located at the home position P ₀ , the hot water temperature data Q of the melting furnace 1 detected by the hot water temperature detector 9 is stored in the hot water temperature register 52 and the ladle temperature detector 1
The inner and outer surface temperature data θ ₁ and θ ₂ of the empty ladle 29 detected at 0 are respectively written into the ladle temperature register 51. Here, pouring preparation work is performed in each of the casting machines 2 ₁ to 2 _o . This pouring preparation work begins by setting the sand mold inside the mold, and then pressing the first start button _K11.
~Press K _1o . After this, the mold is closed and tilted to the angle that makes it easiest to pour hot water into it. Here, the worker
Check whether these operations were performed normally, and if so, press the second start button K ₂₁ ~ K _2o
Press. On the other hand, after pressing the first start buttons K ₁₁ to _{K 1o} , if an accident occurs during the mold closing operation, tilting operation, or any other point, the release buttons C ₁ to _{C o} are pressed.

On the other hand, the CPU 41 determines whether or not the first startup buttons K ₁₁ to K _1o have been pressed at regular intervals, and whether or not the second startup button K ₂₁ is pressed.
The process of sequentially determining whether or not ~ _K2o has been pressed and whether the release buttons _C1 ~ _Co have been pressed is repeated, and if the first activation button _K1 ~ _Ko has been pressed, the process is repeated. The first activation signal is input to the first activation signal register 54A, and if the second activation buttons K ₂ to K _o have been pressed, the second activation signal is input to the first activation signal register 54A.
the activation signal to the second activation signal register 54B,
If the release buttons C ₁ to _{C o} have been pressed, their release signals are stored in the release signal register 54C, respectively.

Now, for example, the first activation button K ₁₁ is
Assuming that the first activation button _K13 is pressed first and the first activation button _K12 is pressed third, and those activation signals are stored in the first activation signal register 54A in order, the CPU 41 first presses the first activation button K13. Casting machines 2 1 to _{1 corresponding to the order stored in the starting signal register 54A of No. 1}
2 Display the machine number _o on the display 48. After that, the first data stored in the first starting signal register 54A is read out, and it is determined which casting machine 2 ₁ to 2 _o
Based on the determination result, the immersion time for which the ladle 29 is immersed in the hot water of the melting furnace 1 is calculated according to the flowchart of FIG. The link actuating motor 19, the ladle tilting motor 17, and the molten metal volume control motor 33 are controlled in a predetermined order to pour molten metal into the first casting machines ₂₁ to _2o .

Here, since the first data is from the casting machine 2 ₁ , the CPU 41 first obtains the distance data L ₁ and the amount data G ₁ corresponding to the casting machine 2 ₁ from the distance register 49 and the amount register 50, respectively. Read out and further ladle inner and outer surface temperature data θ ₁ , θ ₂
and hot water temperature data Q in ladle temperature register 5.
1. After reading out the hot water temperature register 52, the moving speed Vx of the carrier 11 is selected from the speed command register 53 based on these data L ₁ , G ₁ , θ ₁ , θ ₂ , and Q. Subsequently, based on the speed data Vx and the data L ₁ , G ₁ , θ ₁ , θ ₂ , Q, the water heater 6 arrives at the casting machine 2 ₁ and supplies the hot water in the ladle 29 to the casting machine 2 ₁ . After calculating the temperature drop ΔQ of the temperature of the hot water in the ladle 29 before pouring, calculate the additional immersion time ΔT of the ladle 29 corresponding to that ΔQ.
seek. By the way, the additional soaking time ΔT of the ladle
For this purpose, a table may be provided in which ΔQ and ΔT are made to correspond in advance. Here, the number of counters corresponding to ΔT is added to the value of the first counter 55, that is, the count number of the normal operating time T during which the ladle 29 pumps up hot water in the melting furnace 1, and the total value is added to the count number of the normal operation time T during which the ladle 29 pumps up hot water in the melting furnace 1, and the total value is calculated as the second counter 56. After setting, drive commands are given to various motors according to predetermined procedures.

First, while the hot water supply device 6 is waiting at the home position _P0 , that is, the position facing the melting furnace 1, a drive command is given to the link actuation motor 19, and the ladle 29 is melted through the operation of the link mechanism 21. It is lowered towards the furnace 1. While the ladle 29 is descending toward the melting furnace 1, the hot water level detection sensor 27
When the water reaches the hot water level, a detection signal from the hot water level detection sensor 27 is given to the CPU 41. Then,
After stopping the link operation motor 19, that is, stopping the lowering of the ladle 29, the CPU 41 reads out the hot water amount data _G1 of the casting machine ₂₁ from the hot water amount register 50, and controls the hot water amount control motor 33 based on the hot water amount data _G1 . At the same time, the ladle tilting motor 17 is driven to tilt the ladle 29 at a predetermined angle. On the other hand, after receiving the detection signal from the hot water level detection sensor 27, the CPU 41 counts up the timer counter 57 at regular intervals, and determines whether the value of the timer counter 57 reaches the value of the second counter 56 or not. Decide whether or not. Here, when the value of the timer counter 57 reaches the value of the second counter 56, that is, after the ladle 29 is immersed in hot water, T+
After the ΔT time has elapsed, the CPU 41 gives a drive command to the link actuation motor 19 to move the ladle 29 to the second position.
The carrier 11 is returned to the center position in the figure, that is, the upper position of the carrier 11. Therefore, the ladle 29 is determined based on the distance L ₁ from the melting furnace 1 to the pouring casting machine 2 ₁ , the amount of molten metal transferred G ₁ , the ladle inner and outer surface temperatures θ ₁ , θ ₂ , the hot water temperature Q, etc.
Since the immersion time is controlled, the amount of temperature drop until the ladle 29 reaches the casting machine 2 ₁ can be reduced. Incidentally, when the ladle 29 is raised from the melting furnace 1, after being raised from the melt level in an inclined position,
Attitude is controlled to horizontal state. As a result, the amount of hot water corresponding to the inclination angle of the ladle 29, that is, the amount of hot water required for the casting machine ₂₁ is supplied to the ladle 29.

Next, a drive command is given to the traveling motor 14,
The carrier 11 is moved from the home position P ₀ to the position P ₁ of the casting machine 2 ₁ at a speed based on the speed data Vx selected from the speed command register 53 and stopped. When the carrier 11 is stopped at position _P1 , the CPU 41 first registers the release signal register 5 as shown in the flowchart of FIG.
After determining whether there is a release signal from the casting machine ₂₁ in 4C, the second starting signal register 54B
It is determined whether or not there is a second start signal from the casting machine ₂₁ . Here, if there is no release signal and if there is a second activation signal, that is, if the mold is set to be ready for pouring after the sand mold has been set, normal processing is performed. That is, a drive command is given to the link actuating motor 19 to advance the ladle 29 toward the casting machine 2 ₁ through the actuation of the link mechanism 21 . Then, the ladle 29 is the casting machine 2.
₁ , a drive command is given to the ladle tilting motor 17 to move the ladle 29 counterclockwise in FIG.
Turn it over 90 degrees and pour the hot water in the ladle 29 into the casting machine 2.
₁ , the ladle 29 is returned to the horizontal state. After that, after returning the ladle 29 to the position above the carrier 11, a drive command is given to the travel motor 14 to move the carrier 11 to the home position.
Return to P ₀ to complete pouring into the casting machine 2 ₁ .

In addition, if there is no release signal or second start signal, that is, after the sand mold has been set, there is a problem with the closing or tilting operation of the mold, and the mold is not yet set to be ready for pouring. In this case, the timer counter 57 is counted up, and after determining whether or not the value of the timer counter 57 has reached a preset value, a loop is performed in which the presence or absence of the release signal and the second activation signal is determined. Repeat. Here, if the second activation signal is given before the value of the timer counter 57 reaches the set value,
That is, after the carrier 11 reaches the position _P1 and before a certain period of time has elapsed, the mold accident is repaired and the mold is set in a ready state for pouring, and then normal processing is performed.

However, if a certain period of time elapses without the release signal and the second activation signal, the return process is performed. In this case, with the carrier 11 stopped at position _P1 , a drive command is given to the travel motor 14 to move the carrier 11 to the home position.
After returning to the P ₀ position, the link actuation motor 19, ladle tilt motor 17, and hot water amount control motor 33 are driven to return the hot water in the ladle 29 to the melting furnace 1, and then the standby state is restored. let Therefore, if the casting machines 2 ₁ to 2 _o that perform pouring are not set to a pourable state, the hot water fed into the ladle 29 will be returned to the melting furnace 1 again.

Furthermore, after the sand mold has been set, if the release button _C1 is pressed immediately due to an accident during the closing or tilting operation of the mold, the carrier 11 will release _P1.
Since the release signal is recognized at the time of reaching the position, the return process is immediately performed.
Further, if the release button _C1 is pressed before the timer counter 57 counts up, the return process is performed when the release signal is recognized.
Therefore, if you want to cancel the pouring operation after pressing the first activation buttons K ₁₁ to K _1o , you can press the release buttons C ₁ to _{C o} .

Now, based on the above-described processing, the carrier 11 returns to the home position P ₀ , and the home position signal is sent from the home position detector 7 to the CPU 4.
1, the CPU 41 clears the release signal and the second start signal from the casting machine ₂₁ that has finished processing, and then clears the first start signal register 54.
The data of A is shifted in order, the first data, that is, the second input data is read out, and it is determined which casting machine 2 ₁ to 2 _o the pouring command data is from. In this case, since the data is from the casting machine 2 ₃ , the CPU 41 first calculates the immersion time of the ladle 29 based on the casting machine 2 ₃ , and then calculates the immersion time of the ladle 29 based on the casting machine 2 3.
Traveling motor 14, link actuation motor 19, ladle tilting motor 17, and hot water flow control motor 3
3 and pours hot water from the melting furnace 1 into the casting machine 2 ₃ based on a release signal and a second start signal from the casting machine 2 ₃ . In this way,
Molten metal is selectively poured into each of the casting machines 2 ₁ to 2 _o according to the data stored in the first starting signal register 54A.

On the other hand, in each of the casting machines ₂₁ to _2o , when the poured molten metal hardens and the product is completed, the worker takes out the product, sets a new sand mold in the mold again, and then returns to the first mold. Press the start buttons K ₁₁ to K _1o . Then,
The data corresponding to the pressed first activation buttons K ₁₁ to K _1o is stored in the first activation signal register 54A of the RAM 46.
are sequentially stored in the first activation signal register 5.
Molten metal is selectively poured into each of the casting machines 2 ₁ to 2 _o according to the order of data stored in the casting machine 4A.

Therefore, in this embodiment, each of the casting machines 2 ₁ to 2 _o pours molten metal in order from the one that is ready for pouring, so that, for example, each of the casting machines 2 ₁ to 2 _o casts a different product. Even in such a case, the pouring can be carried out efficiently, and the required amount of hot metal can be poured in each of the casting machines 2 ₁ to 2 _o . In addition, the distance from the melting furnace 1 to each casting machine 2 ₁ to 2 _o into which melt is poured, the amount of melt to be transferred, the temperature of the inner and outer surfaces of the ladle,
After the moving speed of the carrier 11 is selected based on the hot water temperature, the immersion time of the ladle 29 is determined including the moving speed _.
The drop in temperature of the hot water in the ladle 29 during transfer to ~2 _o can be reduced.

Also, when the hot water supply device 6 reaches the position of each casting machine 2 ₁ to 2 _o , it is determined whether there is a release signal and a second start signal, and as a result, if there is no release signal and there is a second start signal, Since the molten metal pouring operation is continued only when the casting machines 2 ₁ to 2 _o are set in a state where molten metal can be poured, the molten metal pouring operation can be performed only when the casting machines 2 1 to 2 o are set in a state where molten metal can be poured. On the other hand, if there is a release signal, for example, if an accident occurs during the closing or tilting operation of the mold and the pouring operation is canceled, or if there is no second start signal within a predetermined time, for example, if a mold accident occurs for a predetermined time. If the hot water in the ladle 29 cannot be repaired within the melting furnace 1, the hot water in the ladle 29 will be returned to the melting furnace 1, so that it will not be poured into the casting machines ₂₁ to _2o that are not set to be ready for pouring. can be prevented.

Furthermore, since the hot water supply device 6 automatically performs the pouring work from the melting furnace 1 to each of the casting machines 2 ₁ to 2 _o , work safety can be ensured and labor savings can be expected.

In addition, in the above embodiment, a plurality of casting machines 2 ₁ to
2 _o , but the present invention is directed to at least two or more casting machines. Also, the first
In addition to the first starting buttons K ₁₁ to K _1o described in the above embodiments, the starting signal generating means for the casting machine automatically detects when a sand mold is set in each casting machine and generates the first starting signal. It may also be something that outputs .
In this case, the step of outputting the first activation signal is not limited to the time when the sand mold is set, but may also be a state in which the sand mold is set, the mold is closed, and the only thing left to do is to tilt the mold. What is necessary is to set an appropriate stage in which the preparation for pouring the molten metal may be completed up to a predetermined stage and then the pouring operation can proceed.

Furthermore, as the second activation signal generating means, in addition to the second activation buttons K ₂₁ to _{K 2o} described in the above embodiment,
For example, detecting that the mold is tilted at a predetermined angle after being closed with a sand mold set inside;
A device that automatically outputs the second start signal, or a device that detects that the mold is closed in the case of a non-tilting mold and automatically outputs the second start signal may be used. After confirming that everything is complete and the mold is ready for pouring, the second activation signal is output.

Further, the control means is not limited to the circuit described in the above embodiment.

On the other hand, in determining the presence or absence of the second start signal, it is not limited to the positions of the casting machines 2 ₁ - 2 _o described in the above embodiment, but also from the melting furnace 1 to the casting machines 2 ₁ - 2 _o. It can be at any position. Furthermore, the release signal is determined not only at the position of each casting machine 2 ₁ - 2 _o but also at regular intervals while the water heater 6 moves from the melting furnace 1 to each casting machine 2 ₁ - 2 _o . You may also do so.

As described above, according to the present invention, it is possible to safely and efficiently pour hot water into multiple casting machines, thereby saving labor, and at the same time, the order of pouring hot water can be determined according to the cycle of each casting machine. Therefore, it can be applied, for example, even when each casting machine casts a different product, and the pouring operation can be performed only when the mold is set to be ready for pouring.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, and Fig. 1 is an explanatory diagram showing the entire system, Fig. 2 is a side view showing the water heater, Fig. 3 is a block diagram showing the controller, and Fig. 4 is an explanatory diagram showing the entire system. The flowchart for determining the immersion time of the ladle, FIG. 5, is a flowchart during the pouring operation. DESCRIPTION OF SYMBOLS 1... Melting furnace, 2 ₁ - 2 _o ... Casting machine, 5... Guide rail as a conveyance path, 6... Water heater, 8...
...Controller as control means, 41...
CPU, 54A...First activation signal register as storage unit, _K11 to _K1o ...First activation button as first activation signal generating means, _K21 to _K2o ...Second
a second activation button as activation signal generating means;

Claims (1)

[Claims] 1. A melting furnace, a plurality of casting machines, a conveyance path disposed between these plurality of casting machines and the melting furnace, and a conveyance path provided movably along the conveyance path for discharging hot water from the melting furnace. a water supply device that pumps up the molten metal and pours it into the plurality of casting machines; and a first activation signal that outputs a first activation signal on the condition that preparation for pouring the molten metal has been completed to a predetermined stage in each of the casting machines. generating means, a second starting signal generating means for outputting a second starting signal on the condition that all pouring preparations are completed in each of the casting machines, and a second starting signal generating means for outputting a second starting signal on the condition that all pouring preparations are completed in each of the casting machines; control means for controlling the operation of the water heater based on a start signal, the control means comprising: a storage section that sequentially stores the first start signal from the first start signal generation means; The water heater is controlled to sequentially pour hot water from the melting furnace into the casting machine designated according to the storage order of the first start signal stored in the melting furnace, and the water heater is determining the presence or absence of a second start signal from the second start signal generating means at a predetermined position to move to the specified casting machine, and pouring the metal into the designated casting machine only when the second start signal is present. An automatic hot water supply control device comprising: means for continuing.