JPH0153150B2 - - 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 the 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,
Since molten metal may be poured into the mold before it is in a state where molten metal can be poured properly, there are cases where it is desired to cancel the molten pouring operation.

An object of the present invention is to provide an automatic hot water supply control device that can determine the pouring order according to the cycle of each casting machine and can cancel the pouring operation in each casting machine.

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 start signal generating means that is freely provided and outputs a start signal on condition that pouring preparation is completed in each of the casting machines, and a cancel signal generating means that outputs a cancel signal that cancels the pouring operation in each of the casting machines. and a control means, and the control means is connected to a storage section that sequentially stores the starting signals from the starting signal generating means, and a casting machine designated according to the storage order of the starting signals stored in the storage section. Controlling the water supply device to sequentially pour hot water from the melting furnace, and checking the presence or absence of a release signal from the release signal generating means at a predetermined position where the water supply device moves from the melting furnace to a designated casting machine. The above-mentioned object is achieved by including a means for determining the casting machine and continuing the pouring operation to the designated casting machine only when there is no cancellation signal. In other words, by controlling the hot water supply device to sequentially pour hot water from the melting furnace into the specified casting machine according to the storage order of the start signal stored in the storage unit, the casting machine that is ready for pouring The release signal generating means allows the melting machine to be poured in the order of casting machines, and the pouring order can be determined arbitrarily according to the cycle of each casting machine, and the release signal generating means By determining the presence or absence of a release signal from the casting machine and continuing the pouring operation to the specified casting machine only when there is no release signal, the pouring operation can be canceled by outputting a release signal at each casting machine. It has been made possible.

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 a plurality of 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, operating units 4 ₁ to 4 _o are provided near each of the casting machines 2 ₁ to 2 _o , respectively. Each of the operation parts ₄₁ to _4o has first start buttons _{K11 to} K as a start signal generating means that are operated on the condition that pouring preparation is completed, that is, the sand mold is set in the mold. _1o , the second activation, which is operated on the condition that the mold is set to a pourable state, that is, the sand mold is set inside the mold, the mold is closed, and then tilted at a predetermined angle. Buttons K ₂₁ to K _2o and release buttons C ₁ to _Co as release signal generating means are provided, respectively. A first activation signal based on the operation of the first activation buttons K ₁₁ to K _1o , and a first activation signal based on the operation of the second activation button K _{21 .}
A second activation signal based on the operation of K _2o and a release signal based on the operation of the release buttons C ₁ to _{C o} are respectively provided 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 as a conveyance path, and the water heater 6 is provided at a home position P ₀ facing the melting furnace 1. A home position detector 7 is provided which detects the arrival of the water heater 6 and provides a home position signal to the controller 8. Also, this home position P ₀
At the position, a ladle temperature detector 10 is provided which detects the inner and outer surface temperatures of a ladle 29 provided in the water heater 6 when the water heater 6 is in a standby state, and provides the temperature data to the controller 8. The controller 8 sequentially stores first activation signals given by operating the first activation buttons K ₁₁ to K _1o in each of the operation units 4 ₁ to 4 _o , and specifies them according to the storage order. The operation of the hot water supply device 6 is controlled based on a predetermined procedure in order to sequentially pour the hot water supplied in the melting furnace 1 into the casting machines 2 ₁ to 2 _o .

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 like this.

On the other hand, a rotary lever 30 is integrally fixed to the rotary shaft 18, and a water flow control device 31 is provided on the housing 16 to abut the rotary lever 30 and stop driving the ladle tilting motor 17. It is provided. The hot water flow control device 31 includes a switch 32 that stops the ladle tilting motor 17 when the rotary lever 30 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 control the rotary lever 30. It is composed of a hot water amount control motor 33 that controls the rotation angle, that is, the inclination angle 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, CPC (Central
The processing unit 41 is connected to I/O units 43 and 4 via an address bus and a data bus 42.
4. ROM (Read Only Memory) 45 and
A RAM (Random Access Memory) 46 is 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 a hot water level detection signal from the hot water level detection sensor 27 are respectively input, and a keyboard 47 is connected. From the keyboard 47, distance data L _{1 to} L _o from each casting machine 2 ₁ to 2 _o to the melting furnace 1 and data G ₁ of the amount of hot water required in each casting machine 2 ₁ to 2 _o are provided.
~G _o is input. Further, a display 48 is connected to the I/O unit 44 in addition to the traveling motor 14, the link operating motor 19, the ladle tilting motor 17, and the hot water amount control motor 33. The display 48 indicates, for example, the first to third casting machines 2 ₁ to 3 that perform the pouring operation.
2 The machine numbers are displayed in order according to _o . 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 51 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 written into the ladle temperature register 51, respectively. 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, then pressing the first start button.
Press K ₁₁ ~ 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 operator checks whether these operations have been performed normally, and if they are normal, presses the second start button K ₂₁ ~
Press K _2o . 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 the ladle inner and outer surface temperature data Θ ₁ ,
After reading Θ ₂ and hot water temperature data Q from the ladle temperature register 51 and hot water temperature register 52, the moving speed Vx of the carrier 11 is given a speed command based on these data L ₁ , G ₁ , Θ ₁ , Θ ₂ , and Q. register 5
Choose from 3. Next, based on the speed data Vx and the data L ₁ , G ₁ , Θ ₁ , Θ ₂ , Q,
After calculating the amount of temperature drop ΔQ of the temperature drop of the hot water in the ladle 29 from when the hot water supply device 6 arrives at the casting machine 2 ₁ to pouring the hot water in the ladle 29 into the casting machine 2 ₁ , the temperature drop amount ΔQ is calculated. The additional immersion time ΔT of the ladle 29 is determined. Incidentally, when calculating the additional immersion time ΔT of the ladle, a table may be provided in advance in which ΔQ and ΔT are correlated. Here, the count number 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 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 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 2 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 of 9 is controlled, the amount of temperature drop until the ladle 29 reaches the casting machine 2 ₁ can be reduced. In addition, when the ladle 29 is raised from the melting furnace 1, it is raised above the melt surface in an inclined position, and then its position is controlled to be in a horizontal position. As a result, the amount of molten metal corresponding to the inclination angle of the ladle 29, that is, the casting machine 2
The amount of hot water required for ₁ 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 V(x) selected from the speed command register 53 and stopped. With the carrier 11 stopped at position _P1 , the CPU 41 first determines whether or not there is a release signal from the casting machine ₂₁ in the release signal register 54C, as shown in the flowchart of FIG. , second activation signal register 5
It is determined whether or not there is a second starting signal from the casting machine ₂₁ in the casting machine 4B. Here, there is no release signal,
If there is a second activation signal, that is, if the mold is set to a pourable state after the pouring preparation is completed, 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 .

Also, if there is no release signal or second start signal, that is, if the mold is not set to a ready state for pouring because there is a problem with the closing or tilting operation of the mold after the pouring preparation is completed. , a loop is created in which 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, the presence or absence of the release signal and the second activation signal is determined. Repeat. Here, if the second start signal is given before the value of the timer counter 57 reaches the set value, that is, before a certain period of time has elapsed after the carrier 11 reaches the _P1 position, a mold accident will occur. Once repaired and ready for pouring, normal processing will occur.

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 tilting 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, if the release button _C1 is immediately pushed out due to an accident during the closing or tilting operation of the mold after preparation for pouring is completed, when the carrier 11 reaches the position _P1 . Since the release signal is recognized in the determination, the return process is immediately performed. Furthermore, 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, each casting machine 2 ₁ to which melting metal is poured from the melting furnace 1
After the moving speed of the carrier 11 is selected based on the distance to the melting furnace ₁ , the amount of melt to be transferred, the temperature of the inner and outer surfaces of the ladle, and the hot water temperature, the immersion time of the ladle 29 is determined including the moving speed. It is possible to reduce the temperature drop of the hot water in the ladle 29 during transfer from the hot water to each of the casting machines 2 ₁ to 2 _o .

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 mold closing or tilting operation 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 is returned to the melting furnace 1, which prevents the melt from being 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. Further, as the starting signal generating means, the first
In addition to the starting buttons _K11 to _K1o , for example, when a sand mold is set in each casting machine, it may be automatically detected and a first starting signal may be output. Also,
Instead of the second starting buttons K ₂₁ to _{K 1o} described in the above embodiment, for example, it is possible to automatically detect that the mold is tilted at a predetermined angle after being closed with a sand mold set inside. one that outputs a second activation signal to the
Furthermore, in the case of a mold that does not tilt, closing of the mold may be detected and the second activation signal may be automatically output. Furthermore, 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 canceled in each casting machine.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which 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 the 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 activation signal generation means, _C1 to _Co ...cancellation button as release signal generation 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 hot water supply device that pumps up the molten metal and pours it into the plurality of casting machines; a start signal generating means that outputs a start signal on condition that preparation for pouring is completed in each of the casting machines; a release signal generating means for outputting a release signal for canceling the hot water operation; and a control means for controlling the operation of the hot water supply apparatus based on the release signal from each of the release signal generating means and the start signal from each of the start signal generating means. The control means includes a memory section for sequentially storing the start signals from the start signal generating means, and a control means for transmitting the start signals from the melting furnace to the designated casting machine according to the storage order of the start signals stored in the storage section. The water heater is controlled to sequentially pour hot water, and at a predetermined position where the water heater moves from the melting furnace to the designated casting machine, the presence or absence of a release signal from the release signal generating means is determined. An automatic hot water supply control device comprising means for continuing the pouring operation to a specified casting machine only when there is no release signal.