JP3366186B2 - Setting method of standby time after pouring in water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle
Reciprocating movement between
Is the molten metal pumped from the blast furnace ladle at the pouring point?
Hot water supply system for pouring water into die cast machines
From when the ladle reaches the pouring position until it starts pouring
In order to reduce the waiting time before pouring
Note from the end of pouring to the start of moving to the hot water position.
Standby time after pouring in hot water supply device that sets standby time after hot water
Related to the setting method. [0002] 2. Description of the Related Art Supplying molten metal to a die casting machine
In the hot water supply, the ladle of the water heater is at the right time
To supply the molten metal to the die casting machine
The wait time of the tool to the cycle time of the die-cast machine
What is set together is described in Japanese Patent Publication No. 2-9532.
It is more known. [0003] By the way, the above conventional art
Thing starts pouring after ladle reaches pouring position
Waiting time before pouring may increase,
During the standby before pouring, the temperature of the molten metal in the ladle drops and the casting quality decreases.
There was a problem that affected The present invention has been made in view of the above circumstances.
To minimize the temperature drop of the molten metal in the ladle
Supplying molten metal to the die cast machine at the right time
The purpose is to: [0005] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In the invention described in claim 1, the ladle is located at the hot water position.
Move back and forth between the pouring position and melt at the pumping position
At the pouring position, the molten metal pumped from the furnace is
In the hot water supply system for pouring into the die cast machine,
Before pouring from the time the metal reaches the pouring position to the start of pouring
Ladle finishes pouring at pouring position to reduce standby time
Waits after pouring before moving to the hot water position
Setting of standby time after pouring in hot water supply device to set time
Method, one cycle of die casting machine
ToTime as standard cycle time, and die casting
Ideally, the shortest cycle time required for one machine cycle is
Cycle time, and die-cast
When the thin is operating at the standard cycle time
Waiting time before pouringOptimal valueCan beWaiting time after pouringEquivalent to
DoStandby time after optimal pouringToSet and die cast machine
Average cycle time of past multiple shots and the ideal
Calculate the deviation from the cycle time, and use this deviation to determine the optimal pouring
The standby time after pouring is corrected by correcting the standby time after
It is characterized by setting. [0006] Embodiments of the present invention will be described below.
A description will be given based on an embodiment of the present invention shown in the attached drawings. FIGS. 1 to 4 show an embodiment of the present invention.
Fig. 1 shows the overall side view of the hot water supply device of the die casting machine.
FIG. 2 is a flowchart of a die casting machine control routine.
FIG. 3 is a flowchart of a water heater control routine.
FIG. 4 is a flowchart of a standby time setting routine after pouring.
It is. As shown in FIG. 1, gold such as aluminum
Melting furnace 1 filled with molten metal and cylinder blow of engine
Placed between the die casting machine 2 for casting
The hot water supply device 3 includes a machine frame 5 supported on a base 4.
You. The first link 7 and the second link 7
One end of the two links 8 is pivotally supported, and these first links 8
The third link 9 and the other end of the second link 8
One end of the fourth link 10 is pivotally supported by pins 11 and 12.
The other end of the fourth link 10 has a pin 1
It is pivoted at 3. At the other end of the third link 9 is a ladle 14
It is pivotably supported via a support shaft 15. The central portion of the machine frame 5 is in contact with the drive source 16 for movement.
A drive shaft 17 that reciprocates and rotates is provided.
Other end of the fifth link 18 having one end fixed to the drive shaft 17
Is pivotally supported by a pin 19 at an intermediate portion of the fourth link 10.
You. The swing drive source 20 provided on the upper part of the machine frame 5 is
Through the transmission means housed inside the lock 7 and the third link 9
Is connected to the support shaft 15 and the swing drive source 20 is
By driving, the ladle 14 fixed to the support shaft 15 is swung.
Can be moved. Ladle 14 and molten metal inside
The load on the moving drive source 16 by offsetting the weight of the
And a balancer at the end of the arm 21 integrated with the first link 7.
A weight 22 is provided. Hot water with Ladle 14
When not performed, the opening of the melting furnace 1 has a lid that can be freely opened and closed.
24 prevents the temperature of the molten metal from falling in the melting furnace 1
I do. Driving the moving drive source 16
The ladle 15 pumps up the molten metal from the melting furnace 1
Hot water position P₁And the injection sleeve 2 of the die casting machine 2
Pouring position P for supplying molten metal to 3_TwoIs indicated by a dashed line
It can move through the trajectory. The swing drive source 20 is
By driving and swinging the ladle 14, the hot water position
P₁At the ladle 14 from the melting furnace 1
Place P_TwoIn the injection sleeve 23 from the ladle 14
can do. FIG. 2 shows one cycle of the die casting machine 2.
In step S1, the die cast machine
The mold 2 is closed and the pouring position P is set in step S2._TwoWait for
Pouring from the ladle 14 into the injection sleeve 23,
In S3, the key of the die casting machine 2 is
The molten metal is injected into the cavity, and die casting is performed in step S4.
Open the mold and make the mold from the cavity in step S5.
Take out the goods. Then, air blow is performed in step S6.
After cleaning the cavity, the next shot is
Iron three to be cast into cylinder block in preparation for
Insert the probe into the cavity. In one cycle of the die casting machine 2
The required time is the standard cycle time C_ST(In the embodiment, 165
Seconds), but actually takes one cycle
The cycle time C is determined by the accumulation of time errors in each process.
Standard cycle time C_STDoes not always match. FIG. 3 shows the operation of the water heater 3 in one cycle.
Pouring position P in step S11_TwoLA to wait for
Fill the injection sleeve 23 from the dollar 14 and execute Step S1
Pouring position P at 2_TwoWaits after pouring ladle 14
And at step S13 the pouring position P_TwoFrom the hot water position P₁What
And the ladle 14 are retracted, and in step S14, the hot water position P
₁Is returned to the standby state before the hot water is drawn in step S1.
In step 5, the ladle 14 is made to draw hot water, and in step S16, hot water is drawn.
Position P₁Pouring position P_TwoAdvance the ladle 14 to
Pouring position P in step S17_TwoNote that Ladle 14 has reached
Wait for hot water. In step S17, the ladle 14
The standby before pouring means that the ladle 14 moves forward and the pouring position P_TwoTo
After reaching, the die cast machine 2 is ready for injection
Of the ladle 14 until pouring into the sleeve 23 becomes possible
The waiting time before pouring, which corresponds to the length of the waiting time W
₀Minimizes the temperature drop of the molten metal in the ladle 14
It is desirable to make it shorter. However, before pouring
Machine time W₀The ladle 14 is placed at the pouring position P to shorten_Two
If you delay the timing to reach the die casting machine
Die cast machine due to variation of cycle time C
Laddle 14 is in spite of preparation
Hot water position P_TwoWill not be reached.
As a result, the cycle time C of the die casting machine 2 increases.
Could be done. For this purpose, according to the present invention, the step
After pouring, the ladle 14 waits after pouring in step S12.
Standby time W_TwoIs set by a method described later. note
Waiting time after hot water W_TwoIs the pouring position P_TwoLa finished pouring in
Dollar 14 is hot water position P₁Until you start to retreat towards
The waiting time after the pouring corresponds to the waiting time W_TwoLengthen
Waiting time before pouring₀And the waiting time after pouring
W_TwoShortening the waiting time before pouring₀Becomes longer. Less than
Lower, wait time after pouring W_TwoThe setting method of the flowchart shown in FIG.
This will be described with reference to a chart. First, in step S21, the die cast machine
The cycle time C of Step 2 is measured. Step S21
The cycle time C measured in the above is the ideal cycle set in advance.
Less than the time (shortest cycle time, 145 seconds in the example)
If there is, the answer of both steps S22 and S23 is NO
The process then proceeds to step S24, where the preset
Standby time W after appropriate pouring_2OP(65 seconds in the example) after pouring
Standby time W_TwoSet as Standby time W after optimal pouring_2OPIs a diecast
Machine 2 has the standard cycle time C_STWorking on
Sometimes wait time before pouring W₀To the necessary and sufficient optimum value
Wait time after pouring_TwoIs equivalent to In step S23,
The measured cycle time C is equal to the ideal cycle set in advance.
If the time is less than the heating time, the process waits after pouring in step S24.
Time W_TwoIs the optimal waiting time after pouring W_2OPShorter than
Preparing the die-cast machine 2 side by regulating
Ladle 14 is pouring position P even though_TwoTo
It is possible to avoid a situation in which the vehicle does not arrive beforehand. Now, in step S22, the cycle time C is
Exceeds the preset upper limit (180 seconds in this embodiment)
The die cast machine 2 has some trouble.
Is determined to have occurred, and abnormal data longer than 180 seconds
In the cycle measured in step S25 to remove the
The interval C is set to the standard cycle time of 165 seconds. Ma
Cycle time C is 180 seconds in steps S22 and S23
If it is less than 145 seconds, the cycle time C
The cycle time C is set as it is. Subsequently, at step S27, the die cast
Latest N shots of Shin 2 (10 shots in this example)
G) Ideal cycle time C_IDIs calculated, then step S
At 28, the average cycle time C_AVFrom the ideal cycle
Interval C_ID(145 seconds) to calculate the deviation ΔC.
The deviation ΔC is set to the optimum standby time after pouring W_2OP(65 seconds)
Waiting time W after pouring_TwoSet as And
In step S29, step S24 or step
Standby time W after pouring set in step S28_TwoOutput
The pouring position P_TwoWaiting for Ladle 14 at
Waiting time after pouring that is between_TwoControl. As described above, the latest die-cast machine 2
Average cycle time C of past N shots_AVIs calculated.
Average cycle time C_AVAnd ideal cycle time C_IDAnd the ratio
By comparing, the cycle of the die casting machine 2
The deviation ΔC corresponding to the change tendency of the interval C can be detected.
Wear. For example, the cycle time C of the die casting machine 2
Is the ideal cycle time C_IDIf they tend to be longer,
Since the deviation ΔC increases according to the tendency,
The deviation ΔC is set to the optimum standby time after pouring W_2OPAfter pouring added to
Standby time W_TwoIs the original optimal pouring wait time W_2OPLonger than
It becomes. That is, the cycle time of the die casting machine 2
C is the ideal cycle time C_IDIf longer, Ladle 1
4 is the pouring position P_TwoFrom the hot water position P₁Start retreating to
The timing is late, and the amount of the ladle 14 is that much.
Place P₁Pouring position P through_TwoThe timing of reaching
You. As a result, the ladle 14 is positioned at the pouring position P_TwoWait at
Waiting time before pouring W₀Increase the number of ladle 14
It is possible to avoid a decrease in the temperature of the molten metal in the inside. The embodiments of the present invention have been described in detail above.
Ming will make various design changes without departing from the gist
It is possible. For example, the ideal cycle time C_ID, Standard rhino
Cycle time C_ST, Optimal wait time after pouring W_2OP, Average cycling
Time C_AVThe number of shots N for calculating is limited to the embodiment.
Not set, set according to the characteristics of die cast machine 2
can do. [0023] As described above, the invention described in claim 1
According to, it takes one cycle of the die casting machineTime
Is the standard cycle time, and the die-cast machine
Ideal cycle is the shortest cycle time required for one cycle
Set the time as each
Is running at the standard cycle time
Before waiting timeOptimal valueCan beWaiting time after pouringEquivalent to
Standby time after optimal pouringToSet up and die-cast machine
Average cycle time of the last several shots and the ideal cycle
And the deviation from the optimal pouring time is calculated based on the deviation.
Since the machine time is corrected, the cycle of the die casting machine
Even if the time fluctuates, the standby time after pouring
Correction can be made appropriately. With this, diecast
While avoiding increased machine cycle times
Ladle wait time before pouring at pouring position increases
Of the molten metal in the ladle during standby before pouring
The casting quality can be ensured with minimum deterioration
You.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a hot water supply device of a die cast machine. FIG. 2 is a flowchart of a control routine of a die cast machine. FIG. 3 is a flowchart of a control routine of a hot water supply device. Flowchart of time setting routine [Explanation of symbols] 1 melting furnace 2 die casting machine 14 ladle C _AV average cycle time C _ID ideal cycle time C _ST standard cycle time ΔC deviation P ₁ hot water position P ₂ pouring position W ₀ before pouring the waiting time W ₂ Note after the hot water waiting time W _2OP optimum pouring after the waiting time

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-92066 (JP, A) JP-A-2-70375 (JP, A) JP-A-6-315756 (JP, A) JP-A-5-305 245612 (JP, A) JP-A-9-122878 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B22D 46/00 B22D 17/30 B22D 17/32

Claims (1)

(57) [Claims 1] The ladle (14) is reciprocated between a hot water pouring position (P ₁ ) and a pouring position (P ₂ ), and at the hot water pouring position (P ₁ ). The molten metal pumped from the melting furnace (1)
In the pouring position the water heater for pouring from a ladle (14) to the die-casting machine (2) in (P _2), the ladle (14) from reaching the pouring position (P ₂₎ to the start of the pouring To shorten the waiting time before pouring (W ₀ )
In a hot water supply apparatus for setting a waiting time (W ₂ ) after pouring from when the ladle (14) finishes pouring at the pouring position (P ₂ ) to when it starts moving to the hot water pouring position (P ₁ ). This is a method of setting the standby time after pouring, and the time required for one cycle of the die casting machine (2) is
Standard cycle time (C _ST )
The minimum cycle time required for one cycle of machine (2)
Each is set as an ideal cycle time (C _ID ), and the die-cast machine (2) is set to the standard cycle time.
(C _ST ), the standby time before pouring (W
₀ ) is equivalent to the waiting time after pouring (W ₂ ) which can make the optimum value .
That the optimum pouring after the waiting time (W _2OP) Set the diecast machine (2) of the average cycle time of a plurality of past shots (C _AV) and the ideal cycle time (C _ID)
(ΔC) is calculated, and the standby time (W _2OP ) after the optimal pouring is calculated based on the deviation (ΔC).
And setting the standby time after pouring (W ₂ ) in the hot water supply apparatus by correcting the following.